Air conditioner heat recovery system with humidifying function

Abstract

The utility model discloses an air conditioner heat recovery system with a humidifying function, which is provided with a compressor which is connected with a heat recoverer through a pipeline, a condenser is connected at one interface of the heat recoverer, a primary filter is arranged below the condenser, the rear side of the primary filter is connected with an expansion valve, and the rear side of the expansion valve is connected with a secondary filter. An evaporator is arranged on the rear side of the secondary filter, and the rear side of the evaporator is connected with a compressor through a gas-liquid separator; the rear side of the heat recoverer is connected with a water inlet pipe and a water return pipe, the water return pipe is connected with a wet film humidifier, the wet film humidifier is fixed in a water tank, and a water pump is arranged in the water tank and connected with the water inlet pipe to achieve water supply circulation. The heat recoverer is additionally arranged, heat exchange is conducted between water entering the humidifier and the temperature of a refrigerant on the exhaust side, and therefore the purpose of increasing the water inlet temperature of the humidifier can be achieved. And the temperature of the refrigerant entering the condenser in the system is changed in the process, so that the condensing temperature of the refrigerant is reduced, the heat exchange effect is improved, and the unit energy consumption is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of air-conditioning systems, and particularly relates to an air-conditioning heat recovery system with a humidifying function. Background Art

[0002] When the existing conventional air-conditioning system unit is in operation, the humidifying system is directly connected to the on-site tap water. Usually, the water temperature of such a humidifying system is relatively low, resulting in the need to make the wet film of the humidifier very large and also require a large amount of water to flow through to meet the humidifying effect; at the same time, in the refrigerant circulation system, the refrigerant condensation temperature is a key factor directly affecting the energy consumption of the unit. The above-mentioned high water consumption and high power consumption are all a kind of resource waste to some extent.

[0003] In the prior art, heat is generated when the air-conditioning system is in operation. For this part of heat, the current air-conditioning system usually discharges this part of heat, resulting in resource waste; as a person skilled in the art, how to apply this part of the temperature to the humidifier, while reducing the refrigerant temperature on the high-pressure side of the exhaust of the fluorine system and reducing the refrigerant condensation temperature is a technical problem that needs to be solved urgently by those skilled in the air-conditioning field. Summary of the Utility Model

[0004] To overcome the deficiencies of the prior art, the utility model provides an air-conditioning heat recovery system with a humidifying function. The purpose of this utility model is to add a heat recovery heat exchange device on the exhaust side (i.e., the high-temperature and high-pressure side) of the refrigerant circulation system of the unit. By exchanging the temperature of the water entering the humidifier with the refrigerant on the exhaust side, the purpose of increasing the water inlet temperature of the humidifier can be achieved. The above process can also effectively change the temperature at which the refrigerant enters the condenser in the system, thereby reducing the refrigerant condensation temperature, improving the heat exchange effect, and reducing the energy consumption of the unit.

[0005] An air-conditioning heat recovery system with a humidifying function has the following specific structure: it includes a compressor, a fin heat exchanger, a wet film humidifier, a throttling device, a heat recovery device, and a water pump;

[0006] The fin heat exchanger includes an evaporator and a condenser;

[0007] The compressor is connected to the heat recovery device through a pipeline. The heat recovery device is provided with four interfaces. One interface of the heat recovery device is connected to the condenser. A primary filter is arranged below the condenser. The rear side of the primary filter is connected to an expansion valve. The rear side of the expansion valve is connected to a secondary filter. The rear side of the secondary filter is the evaporator. The rear side of the evaporator is connected to the compressor through a gas-liquid separator; the above system constitutes a refrigerant circulation system;

[0008] The rear side of the described heat recovery device is connected to a water inlet pipe and a water return pipe. The water return pipe is connected to a wet film humidifier. The wet film humidifier is fixed in a water tank, and a water pump is arranged in the water tank and connected to the water inlet pipe to achieve water supply circulation.

[0009] A water replenishing port is arranged on the described water tank to replenish water to the entire water tank through the water replenishing port.

[0010] Pressure sensors are arranged on both the inlet side and the outlet side of the described compressor, and needle valves are arranged in cooperation with the pressure sensors.

[0011] Needle valves are arranged at both the front and rear connection ends of the gas-liquid separator.

[0012] The beneficial effects of the present utility model are as follows: In the present utility model, a compressor is connected to a heat recovery device through a pipeline. The heat recovery device is provided with four interfaces. One interface of the heat recovery device is connected to a condenser, a primary filter is arranged below the condenser, the rear side of the primary filter is connected to an expansion valve, the rear side of the expansion valve is connected to a secondary filter, the rear side of the secondary filter is an evaporator, and the rear side of the evaporator is connected to the compressor through a gas-liquid separator; the rear side of the heat recovery device is connected to a water inlet pipe and a water return pipe, the water return pipe is connected to a wet film humidifier, the wet film humidifier is fixed in a water tank, and a water pump is arranged in the water tank and connected to the water inlet pipe to achieve water supply circulation. When the above system operates, by adding a heat recovery device on the exhaust side (i.e., the high-temperature and high-pressure side) of the refrigerant circulation system of the unit, and exchanging heat between the water entering the humidifier and the temperature of the refrigerant on the exhaust side, the purpose of increasing the water inlet temperature of the humidifier can be achieved. This process can also effectively change the temperature of the refrigerant entering the condenser in the system, thereby reducing the condensation temperature of the refrigerant, improving the heat exchange effect, and reducing the energy consumption of the unit. Description of the Drawings

[0013] Figure 1 is a schematic structural diagram of the system of the present utility model;

[0014] Figure 2 is a schematic internal structure diagram of the heat recovery device;

[0015] In the drawings, 1. Heat recovery device, 11. Refrigerant inlet, 12. Refrigerant outlet, 13. Water inlet, 14. Water outlet, 15. Horizontal fins, 16. Vertical fins, 2. Wet film humidifier, 21. Water tank, 22. Water pump, 23. Water replenishing port, 3. Condenser, 31. Condenser needle valve, 32. Primary filter, 4. Electronic expansion valve, 41. Secondary filter, 5. Evaporator, 51. Evaporator joint, 52. Condenser needle valve, 6. Gas-liquid separator, 61. Front needle valve, 62. Rear needle valve, 7. Compressor, 71. Front pressure sensor, 72. Rear pressure sensor, 73. Compressor needle valve. Detailed Embodiments

[0016] As shown in the figure, on the basis of the original air-conditioning system, the present utility model adds a heat recovery device on the exhaust side (i.e., the high-temperature and high-pressure side) of the refrigerant circulation system of the unit, and exchanges heat between the water entering the wet film humidifier and the temperature of the refrigerant on the exhaust side, so as to achieve the purpose of increasing the temperature of the water entering the humidifier. This process can also effectively change the temperature of the refrigerant entering the condenser in the system, thereby reducing the condensation temperature of the refrigerant, improving the heat exchange effect and reducing the energy consumption of the unit.

[0017] Embodiment 1:

[0018] An air-conditioning heat recovery system with a humidifying function has the following specific structure: it includes a compressor 7, a fin heat exchanger, a wet film humidifier 2, a throttling device, a heat recovery device 1, and a water pump 22; the fin heat exchanger includes an evaporator 5 and a condenser 3.

[0019] The compressor 7 is connected to the heat recovery device 1 through a pipeline, and a post-pressure sensor 72 and a compressor needle valve 73 are arranged on the pipeline connecting the compressor 7 and the heat recovery device 1. The heat recovery device 1 is provided with four interfaces, as Figure 2 shown, the heat recovery device 1 includes four interfaces, namely a refrigerant inlet 11, a refrigerant outlet 12, a water inlet 13, and a water outlet 14; the refrigerant inlet 11 is connected to the compressor 7, the refrigerant outlet 12 is connected to the condenser 3, and the water inlet 13 and the water outlet 14 are respectively connected to the wet film humidifier 2 inside the water tank 21. A water pump 22 is also arranged in the water tank 21 to circulate cold water through the water pump 22 so that it flows in the heat recovery device 1 for heat exchange.

[0020] Below the condenser 3 is a primary filter 32. The rear side of the primary filter 32 is connected to an expansion valve 4. The rear side of the expansion valve 4 is connected to a secondary filter 41. The rear side of the secondary filter 41 is the evaporator 5. The rear side of the evaporator 5 is connected to the compressor 7 through a gas-liquid separator 6; a primary filter 32, an expansion valve 4, and a secondary filter 41 are arranged on the pipeline connecting the heat recovery device 1 and the evaporator joint 51; the front and rear sides of the gas-liquid separator 6 are respectively connected to a pre-needle valve 61 and a post-needle valve 62; a pre-pressure sensor 71 is arranged on the front side of the compressor 7, and a post-pressure sensor 72 and a compressor needle valve 73 are arranged on the rear side of the compressor 7. The above system constitutes a refrigerant circulation system. The present utility model realizes the monitoring of the pressure during the normal operation of the compressor 7 through the pre-pressure sensor 71 and the post-pressure sensor 72 together. The multiple needle valves disclosed above constitute the throttling device of the system.

[0021] The rear side of the heat recovery device 1 is connected to a water inlet pipe and a water return pipe through a water inlet 13 and a water outlet 14, and the water return pipe is connected to a wet film humidifier 2. The wet film humidifier 2 is fixed in a water tank 21, and a water pump 22 is arranged in the water tank 21 and connected to the water inlet pipe to realize water supply circulation.

[0022] A water replenishing port 23 is arranged on the water tank, and the whole water tank 21 is replenished with water through the water replenishing port 23 to ensure that a water supply circulation is formed for the wet film humidifier 2 in the water tank 21.

[0023] To further improve the heat exchange efficiency, the internal structure of the heat recovery device 1 of the present utility model is also improved, such as Figure 2 As shown, the inside of the heat recovery device 1 includes a plurality of vertical fins 16 and a plurality of horizontal fins 15. A plurality of horizontal chambers are formed by the plurality of horizontal fins 15 to connect the water inlet 13 and the water outlet 14; a plurality of vertical chambers are formed by the plurality of vertical fins 16 to connect the refrigerant inlet and the refrigerant outlet. Through the above mechanism, the heat exchange efficiency can be improved by means of the plurality of internal fins.

[0024] When the above system operates, the water entering the wet film humidifier 2 first flows through the heat recovery device 1, exchanges heat with the refrigerant on the exhaust side (i.e., the high-temperature and high-pressure side) of the refrigerant circulation system in the heat recovery device 1, raises the water inlet temperature of the wet film humidifier 2 while reducing the temperature of the refrigerant. The refrigerant then enters the outdoor condenser 3 for condensation heat exchange, so that the condensation temperature of the refrigerant can be reduced. After such a cycle, the operation power consumption of the compressor is reduced, and the humidifying effect of the wet film humidifier 2 is improved.

Claims

1. An air-conditioning heat recovery system with a humidifying function, characterized in that: It consists of a compressor, a fin heat exchanger, a wet film humidifier, a throttling device, a heat recovery unit, and a water pump; The fin heat exchanger includes an evaporator and a condenser; The compressor is connected to the heat recovery unit through a pipeline. The heat recovery unit is provided with four interfaces. One interface of the heat recovery unit is connected to the condenser. A primary filter is arranged below the condenser. The rear side of the primary filter is connected to an expansion valve. The rear side of the expansion valve is connected to a secondary filter. The rear side of the secondary filter is the evaporator. The rear side of the evaporator is connected to the compressor through a gas-liquid separator; The above system constitutes a refrigerant circulation system; The rear side of the heat recovery unit is connected to a water inlet pipe and a water return pipe. The water return pipe is connected to the wet film humidifier. The wet film humidifier is fixed in a water tank. A water pump is arranged in the water tank and connected to the water inlet pipe to realize water supply circulation.

2. The air-conditioning heat recovery system with a humidifying function according to claim 1, wherein: A water replenishment port is arranged on the water tank.

3. The air-conditioning heat recovery system with a humidifying function as described in claim 1, characterized in that: Pressure sensors are arranged on both the inlet side and the outlet side of the compressor. Needle valves are arranged in cooperation with the pressure sensors.

4. The air-conditioning heat recovery system with a humidifying function according to claim 1, characterized in that: Needle valves are arranged at both the front and rear connection ends of the gas-liquid separator.

5. The air-conditioning heat recovery system with a humidifying function according to claim 1, characterized in that: The interior of the heat recovery unit includes a number of vertical fins and a number of horizontal fins. A number of horizontal chambers are formed by the number of horizontal fins to connect the water inlet and the water outlet; a number of vertical chambers are formed by the number of vertical fins to connect the refrigerant inlet and the refrigerant outlet.

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