CN206609082U - Fresh air cooperated with return air air-supply anti-haze air-conditioning system - Google Patents

Abstract

The utility model relates to an anti-haze air-conditioning system in which fresh air and return air cooperate to supply air, comprising an air-conditioning device and an automatic control device. The automatic control device includes exhaust ducts, fresh air ducts and return air ducts. The exhaust ducts and fresh air ducts are connected to the room. After entering the room, the fresh air ducts are connected to the air-conditioning indoor unit. A fresh air valve is provided on the fresh air duct at the front section of the air conditioner indoor unit inside the room, an exhaust valve is provided on the exhaust duct outside the room, and a return air valve is provided on the return air duct. The utility model can be used in severe outdoor air conditions such as smog and sandstorms, and can temporarily isolate indoor air and outdoor dirty air to prevent outdoor dirty air from entering the room through the air conditioning system, thereby ensuring the cleanliness of the indoor air.

Description

Anti-smog air-conditioning system with coordinated supply of fresh air and return air

technical field

The utility model belongs to the field of air-conditioning equipment, in particular to a system for bad weather such as smog and sandstorms, and in particular relates to an anti-haze air-conditioning system and a working method thereof in which fresh air and return air cooperate to supply air.

Background technique

In recent years, with the development of my country's economy, the rapid growth of urban population and the acceleration of urbanization, air pollution problems such as smog have become the focus of widespread attention. According to reports, in November 2015, from 3:00 a.m. on the 8th to 1:00 a.m. on the 9th, the air quality in Shenyang, Liaoning Province was “off the charts” for 22 consecutive hours, with a peak value exceeding 1,000 micrograms per cubic meter. In view of air pollution problems such as smog, there is an urgent need to propose anti-smog air conditioning system renovation projects.

Most of the traditional centralized air-conditioning systems are indoor units that inhale the air through the return air outlet arranged on the ceiling, mix it with the fresh air introduced from the outside, and deliver the air to each room through the air outlet after heat and humidity treatment. Today, the vast majority of existing public buildings and some industrial buildings are equipped with centralized air conditioning systems. This system is a hybrid air conditioning system. It mainly has primary return air and secondary return air. It needs to introduce part of the outdoor fresh air to mix with the indoor return air. It is sent indoors through a heat and humidity processor to achieve the purpose of saving energy and ensuring cleanliness. However, in the case of bad outdoor air such as smog and sandstorms, the operation of the system not only cannot ensure indoor cleanliness and comfort, but will introduce a large amount of pollutants, resulting in a decline in indoor air quality.

Contents of the invention

purpose of invention

In view of the above situation, the utility model proposes an anti-smog air-conditioning system in which fresh air and return air cooperate to supply air. By setting up electric valves and linkage control to partially transform the machine room, the centralized air-conditioning system can be used in severe weather such as fog and haze. In some cases, it can be converted into a temporary closed system to realize the temporary isolation of indoor and outdoor dirty air. When the outdoor pollution index decreases, it will be converted to a hybrid air conditioning system through the linkage control of the fresh air valve, exhaust valve, return air valve and air conditioning fan.

Technical solutions

An anti-smog air-conditioning system with cooperative air supply of fresh air and return air, including an air-conditioning device and an automatic control device, characterized in that the air-conditioning device includes: a fresh air valve, a return air valve, an exhaust valve, a louver wheel washing purifier and an electrostatic filter The automatic control device includes exhaust ducts, fresh air ducts and return air ducts. The exhaust ducts and fresh air ducts are connected to the room. After entering the room, the fresh air ducts are connected to the air-conditioning indoor unit. A fresh air valve is installed on the fresh air duct in the front section of the air conditioner indoor unit inside the room, an exhaust valve is installed on the exhaust duct outside the room, and a return air valve is installed on the return air duct; There is a PM2.5 concentration sensor and a carbon dioxide concentration sensor at the end of the air supply duct.

The air duct of the fresh air pipeline between the fresh air valve and the indoor unit of the air conditioner is provided with a louver wheel water washing purifier.

The louver wheel water washing purifier includes an air duct and a purification water tank installed under the air duct. The water tank is filled with water. Fan blades are arranged between the air duct and the water tank. The fan blades are made of activated carbon. The water tank can be Disassemble.

An electrostatic filter is also arranged at the end of the air supply duct.

The working method of the anti-haze air-conditioning system in which the fresh air and the return air cooperate to supply air, close the fresh air valve on the fresh air duct and the exhaust valve on the exhaust duct, adjust the return air valve on the return air duct to increase the return air volume, Ensure that the total air supply volume remains unchanged, forming a temporary closed system for internal circulation of indoor air.

Advantages and effects

The anti-smog air-conditioning system and working method of the new air and return air cooperative air supply of the utility model have the following advantages:

(1) The utility model is applied to the bad outdoor air conditions such as smog and sandstorms, and corresponding improvements are made to the existing air-conditioning system, which can temporarily isolate indoor air and outdoor dirty air, and prevent outdoor dirty air from passing through the air-conditioning system Into the room, so as to ensure the cleanliness of the indoor air.

(2) When the outdoor air environment is bad, the existing air-conditioning system cannot guarantee the cleanliness of the air supply, and the bad air is highly corrosive, which will affect the life and working efficiency of the air-conditioning equipment. The utility model isolates the outdoor dirty air, well protects the air-conditioning equipment, and indirectly improves the working efficiency and operation effect of the air-conditioning equipment.

(3) The utility model ensures indoor cleanliness and comfort, prevents a large number of pollutants from entering the room, and protects the health of indoor personnel, thereby improving people's indoor comfort and work efficiency.

Description of drawings

Figure 1 is a schematic diagram of the overall structure of the utility model.

Fig. 2 is a schematic structural diagram of a water washing purifier with hundreds of discs.

Fig. 3 is a schematic diagram of an air conditioner fan linkage device.

Explanation of reference signs:

1-exhaust air duct, 2-exhaust air valve, 3-fresh air duct, 4-fresh air valve, 5-return air duct, 6-return air valve, 7-air supply duct, 8-louver wheel washing purifier, 9 -Electrostatic filter, 10-Air conditioner indoor unit, 11-Room, 12-Duct, 13-Blade, 14-Sink, 15-Water, 16-Carbon dioxide concentration sensor, 17-PM2.5 concentration sensor, 18-Water valve .

detailed description

Most buildings today are equipped with centralized air-conditioning systems. This system operates under harsh outdoor air conditions such as smog and sandstorms. Not only can it not ensure indoor cleanliness and comfort, but it will introduce a large amount of pollutants, resulting in a decline in indoor air quality. In view of this situation, the utility model plans to partially transform the machine room by setting electric valves and linkage control, and convert the system into a temporary closed system in bad weather such as fog and haze, so as to realize the temporary isolation of indoor and outdoor dirty air . When the outdoor pollution index decreases, it will be converted to a hybrid air conditioning system through the linkage control of the fresh air valve, exhaust valve, return air valve and air conditioning fan.

The anti-smog air-conditioning system designed by the utility model is to partially transform the air-conditioning system by setting electric valves and linkage control, and converts the centralized air-conditioning system into a temporary closed system in severe weather such as fog and haze, so as to realize indoor and outdoor pollution. Temporary isolation of air. When the outdoor pollution index decreases, it will be converted to a hybrid air conditioning system through the linkage control of the fresh air valve, exhaust valve, return air valve and air conditioning fan.

The service items of the utility model are mainly aimed at existing public buildings and some industrial buildings, most of which are installed with centralized air-conditioning systems, which require targeted design and transformation. The utility model mainly provides the local small-scale engineering transformation technology for the existing architectural design institutes, architectural installation companies and air-conditioning manufacturers, and has broad development prospects.

The utility model relates to an anti-haze air-conditioning system in which fresh air and return air cooperate to supply air. As shown in Figure 1, it includes an air-conditioning device and an automatic control device. The air-conditioning device includes: a fresh air valve 4, a return air valve 6, an exhaust valve 2, The louver wheel washing purifier 8 and the electrostatic filter 9; the automatic control device is the linkage control device of the air conditioner fan. The automatic control device includes the exhaust duct 1, the fresh air duct 3 and the return air duct 5, and the exhaust duct 1 and the fresh air duct 3 are connected to the room 11. After the fresh air duct 3 enters the room 11, it is connected to the air conditioner indoor unit 10, the air conditioner indoor unit 10 is connected to the air supply duct 7, and the return air duct 5 is connected to the air conditioner indoor unit 10; There is a fresh air valve 4, an exhaust valve 2 is provided on the exhaust duct 1 outside the room 11, and a return valve 6 is provided on the return duct 5. This setting can ensure the normal operation of the system, and the system sets up electric valves on the basis of the original system and performs linkage control to partially renovate the machine room to achieve the purpose of preventing haze and purifying the outdoor air.

As shown in FIG. 3 , a PM2.5 concentration sensor 17 is provided at the outdoor part of the fresh air duct 3 , and a carbon dioxide concentration sensor 16 is provided at the end of the air supply duct 7 . The purpose of setting the PM2.5 concentration sensor 17 is to detect the concentration of outdoor PM2.5. When the outdoor PM2.5 concentration sensor detects that the outdoor PM2.5 concentration exceeds 0.075mg/m³, that is, when the outdoor air quality is not up to standard, the sensor will This signal is transmitted to the fresh air valve, exhaust valve and return air valve. By controlling the opening and closing of the fresh air valve, exhaust valve and return air valve, the system is temporarily closed. The purpose of setting the carbon dioxide concentration sensor 16 is to detect the indoor carbon dioxide concentration, and the sensor transmits this signal to each valve, water washing purifier and electrostatic filter, by controlling the start and stop of the valve and the opening and closing of the purification device, thereby adjusting The operating state of the system.

On the air duct of the fresh air pipeline between the fresh air valve 4 and the air-conditioning indoor unit 10, a louver wheel water washing purifier 8 can also be added according to user requirements. The louver wheel washing purifier 8 can purify the dirty air introduced from the outside to ensure that the fresh air has sufficient cleanliness.

As shown in Figure 2, the louver wheel water washing purifier 8 includes an air duct 12 and a purified water tank 14 installed below the air duct 12, the water tank 14 is filled with water, and a fan is arranged in the middle of the air duct 12 and the water tank 14 Blade 13, fan blade 13 is the blade of activated carbon material, and water tank 14 is detachable. The working principle of this setting is that when the outdoor air is introduced into the room and passes through the louver wheel to wash the purifier 8, it can pass through the blades made of activated carbon to achieve the purpose of purifying the air, and the blades will rotate under the power of introducing fresh air. When the blades adsorbed with pollutants rotate into the water tank below, the blades will be washed and cleaned by the water in the water tank, and this cycle has achieved the purpose of purifying the fresh air. The sink is detachable mainly to change the water regularly to ensure the cleanliness of the water.

An electrostatic filter 9 may also be provided at the end of the air supply duct 7 according to user requirements. The effect of setting the electrostatic filter 9 is that when the outdoor air pollution is serious and the louver wheel washing purifier 8 cannot solve the problem well, the electrostatic filter 9 is a secondary filter device, and then the air conditioner indoor unit has been treated The air is filtered twice to better achieve the purpose of purifying the outdoor air, and then the filtered air is sent into the room through the air supply duct 7.

The working method of the anti-haze air-conditioning system of the above-mentioned fresh air and return air cooperative air supply is to close the fresh air valve 4 on the fresh air duct 3 and the exhaust valve 2 on the exhaust duct 1, and adjust the return air valve 6 on the return air duct 5. Increase the return air volume to ensure that the total air supply volume remains unchanged, forming a temporary closed system for indoor air internal circulation. This setting is mainly to ensure sufficient air supply through the coordinated operation of fresh air valve 4, exhaust air valve 2 and return air valve 6, and to create a temporary closed system, which can isolate the air conditioning system from outdoor dirty air and circulate indoor air. To achieve the purpose of air supply, to ensure the cleanliness of the air supply.

The working principle of the utility model is as follows:

Add valves to the fresh air duct, exhaust duct and return air duct respectively, close the valves of the fresh air duct and exhaust duct, adjust the valve of the return air duct to increase the return air volume, ensure that the total air supply volume remains unchanged, and form a temporary closure of the internal circulation of indoor air formula system. At the same time, louvers or electrostatic filters can be added according to customer needs to improve indoor air quality.

Example 1

Add valves to the fresh air duct, exhaust duct and return air duct respectively, close the valves of the fresh air duct and exhaust duct, adjust the valve of the return air duct to increase the return air volume, ensure that the total air supply volume remains unchanged, and form a temporary closure of the internal circulation of indoor air formula system. In the case of bad outdoor air such as smog and sandstorms, the utility model partially transforms the air-conditioning system by setting electric valves and linkage control, and converts the hybrid air-conditioning system into a temporary closed system to realize temporary indoor and outdoor dirty air. isolation. When the outdoor pollution index decreases, it will be converted to a hybrid air conditioning system through the linkage control of the fresh air valve, exhaust valve, return air valve and air conditioning fan.

The utility model involves two situations: through the control of the linkage control device of the air conditioner fan, when the outdoor air encounters bad weather such as smog and sandstorms, the fresh air valve and the exhaust valve are closed, which makes the outdoor gas with a large amount of pollutants not It will flow into the room, ensuring the cleanliness of the indoor air and the comfort of the personnel, and at the same time reducing the damage to the terminal device of the air conditioner. When the air pollution index decreases, the fresh air valve and exhaust valve are opened, the return air valve is closed to reduce the indoor return air volume, and increase the fresh air volume, so as to ensure that the total indoor air supply volume remains unchanged.

Example 2

The air conditioner fan linkage device prepared by the utility model has the following operating conditions: when the outdoor PM2.5 concentration sensor detects that the outdoor PM2.5 concentration exceeds 0.075mg/m3, that is, when the outdoor air quality is not up to standard, the fresh air valve, exhaust Damper, open the return air valve, the system temporarily closed operation. After running for a period of time, when the indoor carbon dioxide concentration sensor detects that the indoor carbon dioxide concentration is greater than 0.1%, it will force open the fresh air valve, the exhaust valve, and close the return air valve. Calculate the minimum fresh air ratio, the opening of the exhaust valve is calculated based on the indoor air pressure reaching 5-10Pa, then open the fan and the water valve 18 of the surface cooler, and then open the water wheel purifier and electrostatic filter, so as to ensure the quality of fresh air. After the system has been running for a period of time, when the indoor carbon dioxide concentration drops below 0.1%, close the water wheel purifier and electrostatic filter, then close the fresh air valve and exhaust valve, open the return air valve to the maximum, and the system will switch to temporary closed system, thus circulating to ensure indoor air quality and occupant comfort.

Claims (4)

1. The anti-haze air-conditioning system of air-supply 1. a kind of fresh air cooperates with return air, including air-conditioning device and self-con-tained unit, it is characterised in that： Air-conditioning device includes：New air-valve（4）, air returning valve（6）, exhaust valve（2）, louvre blade wheel water-washing cleaning cartridge（8）And electrostatic filter （9）；Self-con-tained unit includes exhaust duct（1）, fresh air pipeline（3）And return air duct（5）, exhaust duct（1）And fresh air pipeline（3） Connect room（11）, fresh air pipeline（3）Into room（11）After connect indoor apparatus of air conditioner（10）, indoor apparatus of air conditioner（10）Connection Air supply duct（7）, return air duct（5）Connect indoor apparatus of air conditioner（10）；In room（11）Internal indoor apparatus of air conditioner（10）Leading portion Fresh air pipeline（3）It is provided with new air-valve（4）, in room（11）Outside exhaust duct（1）It is provided with exhaust valve（2）, in return air Pipeline（5）It is provided with air returning valve（6）；In fresh air pipeline（3）Outdoor section be provided with PM2.5 concentration sensors（17）, in air-supply Pipeline（7）End be provided with gas concentration lwevel sensor（16）.
2. The anti-haze air-conditioning system of air-supply 2. fresh air according to claim 1 cooperates with return air, it is characterised in that：In new air-valve （4）With indoor apparatus of air conditioner（10）Between fresh air pipeline airduct be provided with louvre blade wheel water-washing cleaning cartridge（8）.
3. The anti-haze air-conditioning system of air-supply 3. fresh air according to claim 2 cooperates with return air, it is characterised in that：The blinds Piece wheel water-washing cleaning cartridge（8）Including airduct（12）With installed in airduct（12）The purification water tank of lower section（14）, tank（14）Middle dress Full water, in airduct（12）And tank（14）Intermediate arrangement have fan blade（13）, fan blade（13）For activated carbon material Blade, tank（14）Detachably.
4. The anti-haze air-conditioning system of air-supply 4. fresh air according to claim 1 cooperates with return air, it is characterised in that：Air supply duct （7）End be additionally provided with electrostatic filter（9）.