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4 Reasons to Use Diverters for Ceiling Vents

Ceiling vent splitter for better airflow

HVAC systems often provide inconsistent temperatures throughout a home or office. Installing a vent splitter will help you maximize the output of your space's HVAC system. Plus, vent splitters give you more control over which areas receive more climate-controlled air. The Vairtech Vent Diverter is designed to provide a healthy and comfortable airflow system and also helps to check the air quality.

Ceiling vent splitters maintain consistent temperatures

Your health depends largely on the temperature of your surroundings. Temperature changes in a home or office can cause health problems for individuals, resulting in decreased productivity or quality of life. Consistent temperatures are necessary for better health and better performance. Vent splitters are an excellent solution for providing consistent temperatures. At Vairtech, our vent splitters help reduce energy bills by keeping your home or office temperature consistent and comfortable.

Ceiling Vent Splitters Can Improve Air Quality

Quality air is the key to a quality life. A bad heat pump, pollutants from your ductwork, and a bad air conditioning system combine to cause poor air circulation in your space. However, vent splitters can improve air quality through better airflow and improve the quality of life for everyone in your home or office space. With improved airflow throughout the office, stable temperatures, and improved air quality, your employees and clients who linger in your commercial space or office are sure to be happier. Vairtech is proud to offer our Vent Diverters designed to improve the quality of life for everyone in your space.

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What Do Ceiling Air Diffusers Do?

The ceiling air diffuser directs airflow

Every HVAC system is designed to essentially push air in and out of a building. By directing conditioned (heated or cooled) air through a series of ducts and vents, these systems make buildings safer and more comfortable. While modern HVAC systems are designed to move air efficiently, no system is perfect. Even the best HVAC system can suffer from cold and hot spots, uneven air distribution, and poor filtration as furniture and people affect how air moves throughout a room. Ceiling air diffusers can alleviate many of these problems in a number of ways. Some diffusers are designed to push air into the center of the room, others help eliminate drafts, and others provide additional filtration.

Ceiling Air Diffusers Improve Air Quality

One of the most important functions of a ceiling diffuser is its ability to improve the air quality in a building. Modern HVAC systems are designed to periodically circulate air throughout a building to prevent the air from becoming stagnant, but many factors can reduce the efficacy of an HVAC system. Ceiling diffusers can help overcome some of these problems by the better distributing cleaner, filtered air throughout the room than vents without diffusers. The diffusers we sell at Comfort First Products come with filters to further remove viruses, allergens, bacteria, dust, and dirt from the air.

For some businesses, including laboratories, hospitals, and other healthcare facilities, air quality is important not only to the people working in the building but also to the overall success of the business.

Ceiling Air Diffusers Can Reduce Energy Costs

HVAC systems are the most energy efficient when the air flowing throughout the system is unobstructed. Ceiling diffusers help airflow in and out of the HVAC system to improve air quality and system efficiency. Improper air distribution in certain rooms in your building can make the system work harder, increasing your energy consumption.

Ceiling Air Diffusers Make Your Building More Comfortable

While it's important to think about the efficiency of your HVAC system and how well-maintained ductwork, heating, and air conditioning systems can reduce energy costs, it's equally important to think about the way a building's air quality is affecting the people who work in the building. Research shows that the more comfortable you are, the more productive you are, while the impact of allergens and viruses on your bottom line can be disastrous. With Ceiling Diffusers from Comfort First Products, you can eliminate hot and cold spots while removing allergens and other potentially dangerous microbes from the air your employees breathe, helping to provide a more even temperature throughout your building.

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What are the types of Linear diffusers?

Linear Diffuser, a type of HVAC diffuser, also known as linear slot diffuser, linear rod diffuser, or linear air diffuser, is made of high-quality extruded aluminum with powder-coated or anodized surface treatment. These crevice air diffusers are designed and manufactured in different elegant and attractive shapes and various sizes. XU XING Linear Air Diffusers are an excellent cost-competitive solution for efficient, stable, and consistent supply and return air in HVAC ventilation systems for residential and commercial buildings and houses.

As a leading linear trough diffuser manufacturer, XU XING has different options. XU XING Linear Diffuser provides aluminum extrusion material options of 0.8mm, 1mm, and 1.2mm thickness to meet the economical and high-end needs of different customers. Additionally, our linear slot air diffusers allow for horizontal, inclined, and vertical airflow. The blade angle can be changed to meet specific orientation requirements.

In this way, our linear diffusers can be used as linear ceiling diffusers (or ceiling slot diffusers) as well as linear floor diffusers. The most popular items are 3 Slot Linear Diffusers, 2 Slot Linear Diffusers, and Single Slot Linear Diffusers. Unusual items such as a 4-slot diffuser are also available. Customized linear diffusers can be made in different lengths or continuous lines according to actual requirements.

XU XING linear diffusers can be made in different colors according to RAL color standards, the most commonly used are RAL9010 and RAL9016. Our outdoor powder finish makes our linear diffusers more durable and stable than common powder coating products. This is especially important in harsh environmental conditions, such as near the sea, or random sunlight or lighting reflections on the product, etc. XU XING offers various accessories for linear diffusers, such as booster boxes, which are specially designed to connect flexible pipes to our trough diffusers to suit different types of air conditioning cooling, or heating systems. Together with all plumbing fittings, XUXING linear diffusers can be used as adjustable linear air dividers for both supplies and return functions. If you have any problem or query about Linear Diffuser, please feel free to send us an inquiry.

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How to Choose the Right Access Panel Supplier

As the world evolves, so do privacy concerns. Science has been developed to a different level and security and privacy are highly protected with advanced technology. Access panel doors have become popular in offices, businesses, and homes to provide greater security.

But there are many things to check before installing the correct access panel. Choosing the right access panel can be daunting due to the high investment and variety of uses. XU XING is the best access panel supplier in China and will provide you with the best experience. We believe installing access panels at your location not only ensures safety but also increases productivity and well-being as they allow for privacy.

How to choose the right access panel:

This lets you do half the work. The right access panel supplier will have multiple departments to handle each of your concerns. They can make recommendations and give good explanations according to your requirements. This will be a good place to start researching your options by looking at the different options available for soundproofing, insulation, non-insulated access panels, and more. The best access panel supplier in China

XU XING will be your best destination to enter the field of advanced security under our guidance. Our materials are customized according to customers' requirements.

Acknowledge the risks.

To acknowledge the risks, it's important to analyze what you want to protect and what you don't. It is important to understand how to unlock and secure protected attributes when the system is stuck. FOSHAN XUXING VENTILATION CO., LTD has the best team, the best manufacturer of access panels and air distribution products, along with a well-trained team to provide proper guidance to ensure safety and handle necessary situations.

Analyze the vision

Installing access panels at your location is a high investment. So it should be understood that the analysis vision adapts to the needs of at least 10 years in the future and can be upgraded.

Clear demand plan

Having a clear understanding of your needs will help you choose the best access panel for your location. Make a list of what you want to keep and what you want to replace. This will give you the correct design for the access panel. A good access panel supplier like us will provide you with different designs for different purposes.

Choose the right material

The correct material for the access panel depends on the wall or floor material and the purpose. Aluminum access panels are most recommended for protection against any corrosion and weathering, and materials such as fire protection or acoustic transmission grade materials are supported to suit your needs.

Determine the location

Deciding where to install the access panel is also important. The actual framing of the access panel can only be determined by knowing the space and dimensions required for the access panel. Ready to protect your space with the advanced technology with many options? Trust us to ensure your safety, XUXING is the best access panel supplier in China.

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Classification of air supply outlets of square diffusers

The diffuser air outlet generally refers to the air outlet of air conditioners and the like, which is similar in meaning to the water separator. It is designed to divert the flow component and direction. It is generally used in large public places so that the air can be evenly distributed. There are many types of air outlets.

Square diffuser air outlet one single double-layer louver

The double-layer louver air outlet is generally used as an air supply outlet, and it can also be used directly with the fan coil unit. It is widely used at the end of the centralized air conditioning system. It can also be used with the multi-leaf regulating valve to adjust the air volume. The single-layer louver air outlet can adjust the up and downwind direction, the return air outlet can be used together with the air outlet filter, the angle of the segments can be adjusted, and there is ABS plastic fixing brackets between the blades. The fixed filter screen can be taken out from the slideway during cleaning, and then pushed in from the slideway after cleaning to continue to use.

Square diffuser air outlet - self-hanging louver type

The self-vertical louver air outlet has positive pressure for the automatic exhaust of air-conditioned rooms. Normally, the louvers of the tuyere droop naturally due to their own weight, which isolates the exchange of indoor and outdoor air. When the indoor air pressure is greater than the outdoor air pressure, the airflow will blow the louvers open and exhaust air outwards. Otherwise, when the indoor air pressure is lower than the outdoor air pressure, the airflow cannot be reversed. Into the room, the airport has a one-way check function.

square diffuser air outlet one square

The diffuser is a commonly used air outlet in the air conditioning system. It has the characteristics of uniform flow and a simple and beautiful appearance. It can be made into a square or a rectangle according to the application requirements and can meet the decoration requirements of any ceiling. The inner core part of the diffuser can be detached from the outer frame, which is convenient for installation and cleaning, and the air outlet regulating valve can be equipped at the back to control and adjust the air volume. Suitable for broadcasting studios, hospitals, theaters, classrooms, concert halls, libraries, entertainment halls, theater lounges, general offices, shops, hotels, restaurants, and gymnasiums, etc. In order to avoid noise interference and discomfort in various environments, in addition to confirming the wind speed at the neck according to the performance table, it is also necessary to consider the installation height and installation occasion.

The air outlet of the square diffuser - spherical

The spherical adjustable air outlet is a nozzle-type air supply outlet. The high-speed airflow sends air in the specified direction through the nozzle of the valve body. The airflow injection direction can be conveniently adjusted in the conical space with a vertex angle of 35°. The airflow can also be adjusted. It is adjusted by the opening and closing degrees of the valve. It is suitable for occasions of high-speed air supply or partial cooling on high ceilings, such as airport waiting halls, indoor stadiums, hotel kitchens, and other occasions.

Square diffuser air supply port-swirl airport

The swirling tuyere sends out the swirling jet, which has the characteristics of a large induction ratio and fast wind speed attenuation. It can be used in the air conditioning system to supply air with large air volume and large temperature difference to reduce the number of tuyeres. It can be installed on the ceiling dynamic phase to have a long opening. It can be used in a low space of fewer than 3 meters on the belly-wrapping board or the ceiling, and it can also supply air in a large area with two heights, and the height can even reach more than 10 meters.

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Which is better, a humidifier or a diffuser?

When designing an air handling unit, it is important to consider the humidity parameter. For comfort, a relative humidity level of 45% – 55% should be maintained. During summer or winter, the humidity level of the air drops, causing discomfort to the indoor occupants. This is where we discover the importance of humidifiers in AC systems. Use a humidifier or dehumidifier to increase or decrease the humidity in the air.

There are various types of humidifiers available such as

A spray-style humidifier, which has a header and nozzles that spray water at 15 psi.

A steam grill humidifier with holes in the pipes for steam distribution. The water is regulated to avoid the emission of odors into the room.

A steam pot humidifier has a pot and a heating plate to heat the water in the pot. This increases the humidity level in the room.

In HVAC systems, different types of air distribution devices are used, such as grills, ventilators, and diffusers. There are many types of diffusers such as

ceiling diffuser

These diffuser types are round, square, and rectangular. They consist of inner cones made of blades arranged in different directions. Square diffusers are more commonly used to supply air. They are typically mounted in the center of conditioned spaces, providing a shorter range for conditioned spaces with low headroom. Air is discharged in all directions through concentric air ducts. The deflected vanes change the air distribution pattern.

slot diffuser

Slot diffusers are mounted on side walls or ceilings. Linear slot diffusers are used for supply and return air. They are suitable for large open spaces.

nozzle diffuser

They are suitable for supplying heating and cooling air over large areas. These can all be adjusted to allow airflow to flow in any direction. They have the advantage of long-distance air supply, low noise, and come in a variety of sizes and colors. They can be installed anywhere such as stadiums, airports, shopping malls, or indoor markets. Contact Tecnalco for a professional nozzle diffuser installation anywhere in the UAE.

So what do you prefer? Humidifier or Diffuser?

A humidifier increases the humidity in a room or building. They are used in medical facilities such as ventilators to keep patients comfortable. Humidifiers are large and hooked up to the HVAC system. It is useful in dry or hot climates when humidity levels drop.

Diffusers act as return air vents, allowing conditioned air to enter the space with even distribution and minimal noise. The HVAC diffuser reduces airflow velocity from the outside and directs to ensure effective mixing with maximum efficiency and less noise. So instead of a humidifier, a diffuser can add air conditioning benefits to a space. FOSHAN XUXING VENTILATION CO., LTD has been recognized as the best HVAC service company, we have been manufacturing and supplying air distribution products for over ten years. We are a renowned supplier of high-quality air supply and duct fittings in the market, supplying consumer durable parts, heat exchangers and parts, OEM parts, and air conditioning units. Our range of Diffusers is extensive and is of the same standard quality as many others in air distribution systems. If you are looking for professional nozzle diffuser installation, please contact our service to get an effective solution at the best price.

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Ceiling Air Diffusers: Everything You Need to Know

Air conditioning diffusers ensure that conditioned air is evenly distributed throughout the room. They need to keep the temperature of the room. There are different types of diffusers on the market. If your home has an HVAC system, you can increase its efficiency by using a diffuser. The air diffuser can be installed on the ceiling, wall, or floor. A well-performing HVAC system can save you a lot of money. Ceiling diffusers are the most commonly used air diffusers. Ceiling air diffusers not only help regulate the even distribution of air, but they also reduce the noise of your HVAC system. Air ceiling diffusers are available in various sizes. The most common are round, square, and rectangular. Choosing the perfect design can enhance the look of your room. Select the appropriate  diffuser according to the architectural style of the site. FOSHAN XUXING VENTILATION CO., LTD, a manufacturer of air distribution products, provides a one-stop solution for your diffuser requirements. We are undoubtedly the number one ceiling air diffuser manufacturer in China.

Air diffusers balance the cooling of the room and the heating of the HVAC system. Using a diffuser with dampers and other accessories helps the overall HVAC system work properly. Made of high durable quality, the diffuser not only provides even distribution but also ventilation. Boasting the best HVAC air distribution products in the UAE, ceiling air diffuser's diffusers are easy to install and help maintain a healthy environment.

Difference Between Diffuser and Grille/Register

The grille and vents are completely different from the diffuser. They have different functions. Grilles/registers are placed to keep unwanted matter such as dust, dirt, and other particles from entering the HVAC system, while diffusers are designed to distribute air evenly in different directions in an area. Air quality can be maintained with an air diffuser.

Ensures even HVAC airflow

By regulating the airflow, you can create a comfortable environment where you stay. Not only does this keep the HVAC system working effectively and efficiently, but it also reduces your utility bills.

To ensure an even distribution of air through the HVAC system, several steps need to be taken:

Monitor and understand the temperature in different rooms - By identifying which rooms are too cold and too hot, you can easily adjust the air distribution.

Install the HVAC diffuser - if it is installed, check that it is working properly. Also, check if it is blocked by anything.

Adjust Diffuser - Adjust the pattern of the diffuser as needed to ensure good air distribution.

Use of essential oils

Essential oils work well with HVAC systems. Essential oils can maintain a more comfortable atmosphere if used with an air diffuser. Air diffusers spread the properties of essential oils throughout a room, reducing mold growth and improving the smell of the area. For high-quality ceiling air diffusers, please hurry up to contact XUXING VENTILATION CO., LTD, a ceiling air diffuser manufacturer in China.

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Differences and characteristics of single-layer louver and double-layer louver

To put it simply, the single-layer louver can only adjust the wind direction up and down, while the double-layer louver can adjust the wind direction up, down, left, and right.

What are the characteristics of single-layer louver tuyere?

2. It can be used as an air supply port and return airport

3. Can be made of aluminum or iron

4. When used as an air supply port, it is used in conjunction with a regulating valve

5. When used as the return air outlet, it can be made into an openable structure and used in conjunction with the filter screen

What are the characteristics of the double-layer louver tuyere?

The double-layer louver tuyere is mainly used in the air-conditioning system as an air supply outlet. An aluminum air volume control valve (a miter valve) can be configured behind the tuyere. The double-layer louver tuyere has two layers of mutually perpendicular pieces to adjust the angle of the horizontal and vertical blades. Adjust the airflow diffusion surface to change the range. The outer frame width of the tuyere has two types: the wide frame and narrow frame, which can be used in ventilation systems with special requirements

2. It can be used as an air supply port.

3. You can choose aluminum or iron to make.

4. Can be used in conjunction with regulating valves.

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How to choose ventilation equipment manufacturers?

One: It depends on the strength of the company

Look at what production equipment the company uses, how many years of experience, what is the operation process, how is the product quality, how is the production efficiency, and how is the product safe.

Two: Need to see accessories and materials

It depends on which company the company has established a supplier cooperation system with, what materials it uses, what performance it has, and how its service life is.

Three: need to look at the cost performance

Under the use of high-quality raw materials and high-precision production technology, we have always maintained a stable price system, reduced costs in terms of manpower, and conquered customers in terms of quality.

Four: need to look at after-sale protection

See how the after-sales service is, and how to solve problems.

    FOSHAN XUXING VENTILATION CO., LTD was established in 2001. We have been a leading manufacturer in air conditioning and HVAC accessories area. XU XING has over 20000 square meters of factory workshops and more than 300 employees. Our company is located in the hometown of aluminum in China—— Nanhai, Foshan City, Guangdong Province, and has convenient transportation and convenient raw materials.

With advantageous technology and strict quality control, we are devoted to developing various new models to meet the market demands with great quality. Our main products are air diffusers, air grilles, air vents, disc air valves, flexible ducts, access panels, and so on. Now, Our products are well sold to more than 25 countries with praise for the great structures, various styles, nice appearance, and high quality.

The company is committed to shopping malls, hotels, basements, garages, fire ventilation pipes and accessories, auxiliary materials, design, production, sales, installation, etc.

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Why is aluminum alloy rainproof louver so popular

Aluminum alloy self-hanging louver tuyere

 This vent is used for the automatic exhaust of air-conditioned rooms with positive pressure. Normally, the louvers of the tuyere droop naturally due to their own weight, which isolates the exchange of indoor and outdoor air. When the indoor air pressure is greater than the outdoor air pressure, the air pressure will blow the louvers open to exhaust the air. Otherwise, when the indoor air pressure is lower than the outdoor air pressure, the airflow cannot be reversed. Into the room, the airport has a one-way non-return effect.

Aluminum alloy louver air outlet

The louver tuyere can be equipped with a regulating valve or a filter according to user requirements. Scope of application: The louver air outlet is often used at the end of the air conditioning system, and can also be used in conjunction with the fan coil unit.

Aluminum alloy rainproof louver air outlet

The blades are fixed and inclined at 45°. The blades have waterproof and splash-proof functions, and are generally installed on the outer wall as a fresh air outlet, and can be used with a filter.

The surface of the aluminum alloy rainproof louver tuyere can be painted or sprayed according to the user's requirements. The color is selected by the user, and the size can be formulated according to the user's design requirements.

Why is the aluminum alloy rainproof louver easy to overhaul

(1) An inspection port should be set next to the main unit of the central air conditioner to facilitate maintenance and troubleshooting of pipelines;

(2) The closed ceilings used in public places such as hotels and shopping malls should be equipped with inspection ports at a certain distance to facilitate the maintenance of the interior of the ceiling;

(3) It can also be used in lamp openings, ventilation openings, fire pipes, etc.

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What is an air diffuser

An air diffuser is a device designed to provide uniform airflow throughout a room. It increases the efficiency of air conditioning units by distributing and distributing cooling air. When airflow remains uniform, airflow and hot spots in the room are eliminated, providing greater comfort for occupants while improving energy efficiency.

An air diffuser is a device designed to provide uniform airflow throughout a room. It increases the efficiency of air conditioning units by distributing and distributing cooling air. When airflow remains uniform, airflow and hot spots in the room are eliminated, providing greater comfort for occupants while improving energy efficiency. Air diffuser. The concept of an air diffuser is relatively simple. Air flows naturally through the ducts. The diffuser captures the air and as it passes through the air conditioning system, divides the forced air into smaller airflows, which are then directed into an even airflow throughout the room. These airflows are often not felt when the air circulates, especially when the room temperature is cooler, which can quickly cool down where the room temperature is cooler. This is an energy-saving device that can be used with air diffusers that can be mounted on the air conditioner at home. This type of diffuser is usually inexpensive and easy to install. The unit is usually white but can be painted in any color to match the decor of the room. This type is often similar to a register or fume hood. Floor diffusers are the most common type of air diffuser in the home. Other types may cover baseboards or ceiling registers that cover vents in the walls that are slightly larger than other dwelling types, and it is preferred when air conditioning vents are located on the lower edge of the wall. Air diffusers help air conditioning units work more efficiently. They don't need a running power source. By distributing airflow evenly over an area, they help maintain comfortable working and living conditions. This is a wise investment for anyone looking to increase the efficiency of their air conditioning units to provide even air temperatures in commercial and residential environments.

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Why is the temperature of the Qatar World Cup stadium so cold?

Qatar is a country of deserts. The desert is characterized by the fact that it is very hot when the sun shines, and it is very cold without the sun. The World Cup used to be held in August. Why did Qatar put it in November to avoid the unbearable heat of the desert in August? But even though it's winter now, it's still very hot in Doha under the sun. The outdoor temperature is around 30°C, the sun is hot, and ordinary people will sweat when wearing a short-sleeved T-shirt. In the evening, it is relatively better and the temperature has dropped, but there will be some "greenhouse effect" when tens of thousands of people gather in the stadium.

In order to solve this problem, Qatar began to study outdoor air conditioning systems several years ago. After researching and researching, the best way is to force refrigeration. Fortunately, Qatar has money, then find a way to make air conditioners with more power and function, and let these air conditioners blow cold air from different positions and angles. Bring the temperature down abruptly.

The world's first "air-conditioned stadium" officially unveiled in the World Cup is the Gulf Stadium. A reporter specially visited the air conditioning system of the stadium.

It turned out that on the side of the outermost corridor in the stadium, there is a pipeline for conveying air-conditioning, and there is an air-conditioning air outlet jet diffuser not far away. Standing under the tuyere jet diffuser, you can clearly feel the strong cold wind; standing in the field, at the highest point of the ceiling, there is also a dense circle of small holes, blowing cold wind from top to bottom.

This type of jet air diffuser is specifically designed for applications requiring high airflow capacity and long-distance supply systems. Airflow can be easily adjusted from jet to diffuse mode, and the direction of airflow can be adjusted by moving the inner core

Hundreds of jet air diffusers are also "hidden" under the seats of the auditorium. They are like the small nozzles of the shower head. They will blow out a small but dense cold air from the height of the audience's ankles, allowing the air to circulate gently. When you get up, it feels cool and not icy. Below the stands, at intervals, there will be groups of four large nozzles. The wind is very strong, bringing air conditioning to the players and referees in the stadium. During the game, it can create a 2-meter-high, "completely isolated" cooling bubble. The data shows that there are at least 3,000 jet air diffusers such as large and small air outlets in a stadium, and the temperature adjustment effect is very obvious. Many people who went to watch the ball deliberately put on long-sleeved jackets.

Dr. Jani, a professor of mechanical engineering at Qatar University, said they began designing and installing an innovative cooling system for the World Cup stadium several years ago. The design of the cooling technology was inspired by research into automotive air conditioning - "The cooling of these stadiums is like the cooling of motor vehicles, and we use the same tools and principles in the cooling technology, but on a huge scale." Jani said. The technology combines thermal insulation with "targeted cooling" - meaning that cooling is applied to the areas where people actually appear, making the stadium a barrier, containing a "cold bubble".

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How Vortex Air Diffusers Change the Direction of Airflow Through Vents

Vortex air diffuser A versatile diffuser specially designed for applications requiring changing area conditions, by providing a helical airflow of the supply air that reflects optimal conditions (e.g. cooling, isothermal heating requirements).

The projection of the supply air is developed and controlled by adjusting the angle of the helical core inside the outer conical housing.

The relationship between the mounting height and the helical core protrusion is critical to the development of ensuring proper air conditioning in the occupied area.

Projection can be done mechanically or electrically

Vortex air diffusers are capable of handling large volumes of air and are ideal for industrial applications as well as commercial properties requiring high ceiling heights such as atriums, airport terminals, theatres, and shopping centers. The outer conical spinner is made of aluminum with an adjustable helical core, made of galvanized mild steel, and mounted inside the assembly.

The structure of the swirl diffuser adopts the principle of hydrodynamics for the blade design, in this way, the blade pushes the airflow through the swirl at a certain initial speed to achieve a larger throwing distance, larger jet coverage space, and more efficient airflow. convection

Flow is affected

The swirl vent can be used in constant or variable air volume air conditioning systems with excellent performance characteristics when the airflow is reduced from 100% to 25%. The noise level is very low. The blades can change their quadrant angles to suit different conditions blowing horizontal, inclined, and vertical rotational flow.

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What are the precautions for the installation of grille louvers?

The grille louver air outlet is an air outlet with a relatively common shape, and the air supply interval is far away, which is very suitable for a high ceiling, and its shape is novel and beautiful. It is generally used for active exhaust in air-conditioned rooms with positive pressure, and it can also be used for new return air outlets and exhaust air outlets. Its principle is to rely on the natural drooping of the louvers of the tuyere to block the air exchange between the inside and outside of the room. When the indoor air pressure is greater than that of the outdoor, the airflow will blow the louvers to exhaust outwards, and the outdoor air cannot flow into the room.

The grille louver tuyere is an indispensable accessory in the ventilation system and air conditioning system, and it is also a very important part. Therefore, there are many precautions when installing this grille louver in the ventilation system or common central air conditioners. It is also necessary to do a good job in the inspection work before installation.

The installation of the grille louver tuyere should be in accordance with the interior decoration. The size of the tuyere is not fixed. Generally, the width must be determined, and the length can be changed according to the actual situation. It should be installed before painting so that the wall will not be stained, and the gap between the louvers and the wall can be filled when painting, so as to achieve an integrated appearance. The grille louver tuyere is easy to accumulate dirt, which affects the temperature and appearance of the wind. It should be cleaned regularly and kept clean.

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Ventilation + rainproof｜Selection and design of building

Shutters are widely used in HVAC systems and building façade systems and are also part of their foundation, but in practical applications, they are often overlooked or do not have enough time for design and proper consideration, and most projects are simply quoted. In view of this situation, the correct method of selecting the louver and the problems existing in the application of the louver are summarized.

According to the structure, fixed form, shape, material, and characteristics of the louver, the louver is divided into the following types of louvers according to its performance: ordinary ventilation louver, rainproof louver, rainproof louver ventilation louver, sound-absorbing ventilation louver, sand-proof louver. Ventilation louvers, etc. Among them, ordinary general ventilation louvers and rainproof ventilation louvers are the most widely used, and the selection method between the two is universal.

According to the problems encountered in actual work, we mainly discuss with you the basic selection of louvers, the detailed design of louvers, and some common misunderstandings about louvers.

Basic selection of shutters

In developed countries such as Europe and the United States, blinds are usually provided by professional suppliers, and each blind has detailed information for customers to choose from and use. In order to facilitate the reader's understanding, two basic concepts are introduced here.

1: Pressure drop refers to the pressure difference on both sides when the airflow passes through the louver;

2: The ventilation area (free zone area) refers to the minimum area where the airflow can pass through the louvers. For ordinary rectangular shutters, it is usually described as the sum of the minimum distance between all adjacent two shutters in the middle plus the minimum distance from the top shutter to the top frame of the shutter plus the sum of the minimum distance from the bottom shutter to the top frame of the shutter. The bottom frame is multiplied by the distance between the two frames. Product of minimum distances.

The following is a brief introduction to the steps of how to choose the shutter that suits your needs from the various shutter series

1. Determine airflow, airflow direction, and maximum pressure drop. These data usually have corresponding data provided by the bidding documents or mechanical and electrical engineering;

2. On the airflow resistance graph, draw a horizontal line at the desired static pressure drop coordinate until it intersects the intake or exhaust curve. At the intersection, draw a straight line down to the free zone velocity axis. Obtain the free zone flow rate corresponding to the pressure drop.

3. Check the water seepage map to ensure that the free zone velocity determined in the previous step is less than the starting point of the seepage velocity.

4. Calculate the ventilation area required for the louvers by dividing the airflow by the free zone flow determined in the steps above.

5. Go to the ventilation area table and select the louver with a ventilation area equal to or greater than the value calculated in step 4. There may be two or more louver sizes for the same ventilation area. Determine the width and height of the blinds according to your needs. According to the requirements of louver performance, the method of choosing a louver is also different. This article selects three classic cases for your reference, see the attachment for details. It should be noted that this selection method does not consider the influence of factors such as anti-bird nets. Therefore, it is recommended to multiply the actually used louver area by a factor of 1.2~1.4 on this basis to ensure that the ventilation needs are met.

Detail design of shutters

1. The cross-sectional shape of the louver determines its performance. The overall shape of the river rainproof ventilation louver is designed to be streamlined to reduce wind resistance. There are sinks at both ends. The purpose is to collect the water entering the louver and discharge it from the two borders, so as to avoid the "waterfall" phenomenon of the louver and reduce the seepage water source. The louver frame has internal grooves and multiple grill-like "wings" to ensure airflow between the louver layers.

2 Bird net/insect net behind the blinds. Common insect nets/bird nets are made of stainless steel and aluminum, and the nets are in the form of woven nets and stretched nets. According to the requirements of AMCA Standard 500, the louver test is carried out without installing the bird/insect net, so the ventilation performance of the louver provided by the manufacturer does not consider the bird/insect net.

Common misunderstandings of louvers

1. The ventilation area percentage (opening ratio) of the louver and the ventilation coefficient of the louver

The ventilation area percentage of the louver is a physical index reflecting the density of the louver, and the ventilation coefficient is an index reflecting the ventilation performance of the louver. For the same type of louver, the louver with a larger percentage of ventilation area also has a higher ventilation coefficient. However, the percentage of ventilation area of different louvers cannot reflect the level of ventilation. Taking Jianghe rainproof ventilation louver as an example, its size is 1220mmX1220mm, its ventilation area percentage is about 50% and its ventilation coefficient is 0.33. In practical applications, the ventilation area percentage of the louver combined with the pressure drop is a common method to determine the louver. However, we must first be able to screen the requirements of the bidding documents for louvers and select suitable louvers according to the requirements.

2. Static rainproof performance

The data shown in the static rain performance table is based on AMCA standard testing. The experiment is to install a 1220mm×1220mm shutter on a wall and simulate a certain amount of rain falling down on the wall. It is tested that the rainwater can penetrate into the room under the wind speed. This is only under experimental conditions and does not consider the actual rainfall under natural conditions, the installation position of louvers, and the influence of factors such as wall wind pressure. The AMCA test is similar to a mild spring rain that does not affect a person's sleep. Unfortunately, many rainstorms were more violent than the test conditions. This means that even if the correct louver is selected according to the static rainproof performance, it will still penetrate into the rainwater.

3. Dynamic rainproof performance

Dynamic rainproof performance is an important indicator to measure the rainproof performance of louvers. Generally, the rain resistance rate or rainproof grade of the louver is required under a rainfall of 75mm/h and a wind speed of 13m/s. However, it cannot be said in general how much rain-blocking efficiency of the louver or the level of rain protection under this condition. Another important factor is the air intake (air output) of the louver or the wind speed passing through the core area. If we install a louver on a small and closed hole, and install another same louver on a hole with "passing" wind, under the same test conditions, the amount of water seepage of the louver is different. The dynamic rainproof performance levels corresponding to different wind speeds are also different.

Under normal circumstances, the wind speed in the core area is required to be 3.0m/s or 3.5m/s, and the requirements for the rain-blocking efficiency of the rain-proof louvers or the achieved rain-proof grade are put forward.

4. About the choice of rainproof grade

How to choose the rainproof shutters suitable for the project should comprehensively consider the needs, application, and cost of the project. In our reapplication, some consultants asked for 100% rainproof efficiency. In fact, this is very unreasonable and unnecessary, because rainproof ventilation louvers need to ensure two important indicators, one is ventilation and the other is rainproof performance, and The trade-off between the two requires a comprehensive balance.

In general, it is recommended that for applications with very high requirements for static rainwater protection (such as areas where electrical switches are located), louvers of performance class 4 (1 to 0.99 efficiency) are optional. This choice may sacrifice some ventilation performance. For high water seepage protection, a small amount of water seepage can be ignored, or occasional cleaning work is not a problem (such as the area where a water pump with a drip-proof motor or a fan is located), then it is recommended to use class 3 (0.989 to 0.985 efficiency) ) of the shutters. For most projects, the first concern is the ventilation performance and then the rainproof performance of the louver. performance) is relatively good, and it is also the most widely selected in practical engineering applications. Therefore, it is the key to choosing the louver correctly and reasonably according to the needs.

[airgrille]

How to choose the air outlet for central air conditioning installation

Today, we will talk about how to choose the air outlet after the internal and external units of the central air conditioner are installed.

First of all, when purchasing, you need to determine a few points, that is, the air supply form of the central air conditioner:

Plastic return air grille

How to judge the air supply in your home? It should be selected according to the house type and scheme. I won't say more here.

The shape of the air outlet is shown in the following figure:

There are also shapes and colors available:

The lengthened air outlet is divided into framed and frameless, and the finished product is generally divided into white and black.

Of course, you can also change the color by painting.

Plastic Double Deflection Air grille

It should be noted that if there is no frame, it should be determined when the carpenter comes in.

Personally, I think the effect of side outside back + frameless + black paint is better than others. Some say borderless is for minimalist style. In fact, this is not the case. Today, no matter what the style is, it is exquisite and delicate.

The air outlet is made of aluminum alloy, ABS, and wood.

Recommended ABS material, no deformation, no condensation; second, aluminum alloy, cost-effective. Wood is not recommended unless the effect is desired.

In fact, in addition to these, there are also electric air outlets and linear air outlets. The former looks average, while the latter is really expensive. An additional price can upgrade a home's bathroom hardware.

[airgrille]

What HVAC accessories can be installed on the central air conditioner?

The HVAC accessories that will be used for the installation of central air conditioners mainly include ceiling air outlets, ceiling grilles, refrigerant pipes, insulation cotton, branch pipes, power line communication line pipes, PVC condenser pipes, booms, air outlets, etc.

1. Ceiling air diffuser: Small parts are often ignored by many consumers, but this part has a great impact on the interior decoration effect. There are two kinds of materials for common air diffusers: ABS air diffusers and aluminum alloy air diffusers. Both air diffusers have advantages and disadvantages. Made of ABS engineering material, it is not easy to fall. However, the material has a certain coefficient of thermal expansion and contraction, so it may squeak during use, and the air diffuser may also appear slightly arched in winter when the temperature is low. After a long time of use, the air outlet will turn yellow and not easy to clean. The advantage is that it is not easy to deform and change color. However, due to the very fast heat transfer rate of aluminum alloys, it is easy to condense when used in summer. Water droplets appear in severe cases.

2. Insulation cotton: cover the surface of the refrigerant pipeline to prevent the loss of cold and heat in the refrigerant pipeline and the generation of condensed water during refrigeration operation.

High-quality B1 grade plates and pipes are printed in white fonts, and manufacturers generally use English logos. Fonts are not easy to erase.

The font will stay the same after stretching with good quality.

Good quality B1 rubber and plastic products are rich in non-combustible, flame-retardant, and smoke-reducing materials. The smoke produced when burning is very low in concentration does not melt, and no fireball falls. It has the characteristics of natural extinction.

Insulation thickness requirements:

One. The thickness of the insulating layer at the outer diameter of the copper tube d≤Φ12.7mm is greater than 15mm.

b. The thickness of the insulating layer at the outer diameter of the copper tube d≥Φ15.9mm is δ=20mm or more.

C. The thickness of the insulating layer at the outer diameter of the copper tube d≥Φ41.3mm is δ=25mm or more.

3. Branch pipe: Whether the refrigerant is used when the pipe is divided, the installation level will seriously affect the operation effect and reliability of the system.

The wall thickness of the shunt pipe is good, and the welding quality is good. Pipes will not burst due to high pressure.

Installation requirements: It must be installed horizontally, and there must be a straight-line distance of 0.5m before and after the branch pipe; only by strictly following this requirement can the refrigerant between the indoor and outdoor units be distributed in the most reasonable way, and the use effect of each indoor unit can be guaranteed. Reliability of the outdoor unit.

4. Power line and communication line pipe: When laying a power line or communication line, in order to ensure that the line is not damaged during the installation process, the communication signal is not disturbed by strong electricity, and it is reliable and durable. Over time, the thread must be threaded separately.

The power cable and the signal cable cannot be threaded on the same pipe, they must be threaded separately, with an interval of more than 300mm;

When the cable comes out of the junction box and is connected to the power terminal of the air conditioner, it needs to be protected with a plastic corrugated pipe, and the connection between the plastic corrugated pipe and the junction box needs to be wrapped with black tape.

5. PVC condensate drain pipe: connect the drain port of each indoor unit, and discharge the condensate water generated during the refrigeration operation of the indoor unit in time; the condensate water drain pipe must be covered with thermal insulation cotton with a thickness of not less than 10mm to prevent condensation on the surface of the pipe water.

The diameter of the pipe should be regular, the thickness should be uniform, and the color should not be yellow.

The hanger spacing of the condensate pipes must be reasonable and inclined 1/100 to the drain pipes.

6. Composite air duct material: used to make air ducts for air outlets and return air in the machine. It has the characteristics of small wind resistance and good thermal insulation effect, which can effectively ensure the operation effect of the air conditioner.

Check the material density against the material density table provided by the manufacturer to confirm the quality.

Tap the composite material to confirm the quality, the sound is pleasant;

When the air duct is connected with the internal unit, the canvas should be used for soft connection to reduce vibration and noise; the air duct hanger is arranged reasonably to ensure that the air duct is hoisted firmly; the size of the air duct and the air outlet should be reasonable to ensure the air outlet effect of the air conditioner.

7. Boom and clamp assembly: used to fix refrigerant pipes and drainage pipes. Booms are used with clips. The hanger spacing is determined according to the pipe material and pipe diameter to ensure that the pipe is stable and does not sink.

Installation requirements: Install booms at the elbows and branch pipes of the pipeline for reinforcement; select the appropriate spacing for boom reinforcement according to the pipe diameter. At the same time, a PVC pipe is added to the clamp for protection to prevent damage to the insulating cotton and dripping.

Outdoor unit shock pad: placed at the bottom of the foot of the outdoor unit to effectively reduce the vibration and noise of the outdoor unit. Improve air conditioning comfort.

8. The thickness of the damping pad should not be less than 50px and should be uniform, and not easy to deform and crack.

The compressive strength of the damping pad should be able to bear the weight of the outdoor unit, and it is not easy to deform and crack after padding with the outdoor unit.

Installation requirements: The anti-vibration pad is fixed with the foot of the outdoor unit, and the installation foundation must be level. After installation, swing the outdoor unit vigorously to confirm whether it is firm and reliable.

9. Copper pipe welding requirements: During the welding process of the refrigerant pipe, nitrogen must be continuously filled into the pipe, and the pressure should be controlled at about 0.2~0.3kgf/cm2 to ensure that the refrigerant has no oxide scale. pipeline.

Welding requirements: When the refrigerant pipe is welded, nitrogen must be continuously filled and the airflow should be properly controlled.

The place where the nitrogen-filled hose is inserted into the copper pipe mouth must be well-wrapped to prevent air leakage.

The nitrogen filling path must be reasonable, there must be only one outlet, and the nitrogen must flow through the welded joint of the pipe.

When connecting two refrigerant pipes with the same diameter, expansion pipes must be used to ensure the welding quality.