CN209763339U - A fresh air air conditioning unit with defrosting function - Google Patents

Abstract

The utility model discloses a fresh air air conditioner unit with a defrosting function, which comprises a case, in which a compressor, an evaporative condenser and an evaporator connected by four interfaces of a four-way valve, an evaporative condenser and an evaporator are arranged. The spraying device a and the spraying device b are respectively provided, and the evaporative condenser and the evaporator are respectively connected with an exhaust fan and a blower, and the corresponding positions of the two sides of the chassis and the exhaust fan and the blower are respectively provided with an exhaust port and an air supply port, The side wall of the chassis is provided with a fresh air outlet a and a fresh air outlet b respectively near the middle, and a baffle is set in the middle of the chassis to completely separate the fresh air outlet a and the fresh air outlet b, and an exhaust valve is arranged between the fresh air outlet a and the fresh air outlet b , There is a return air vent on the top of the chassis. The utility model can effectively solve the high-temperature protection shut-down problem of the evaporative condenser; at the same time, it can effectively remove the frost layer on the surface of the evaporative condenser, and satisfies the use requirements of users in different temperature environments.

Description

A fresh air air conditioning unit with defrosting function

technical field

The utility model belongs to the technical field of air-conditioning equipment, and relates to a fresh-air air-conditioning unit with a defrosting function.

Background technique

Now the air conditioner is an indispensable part of the home. The air conditioner is an air conditioner, which can regulate the temperature, humidity, airflow speed, and cleanliness of the air in the space. However, people mostly use it to adjust the temperature, and with the improvement of living standards, people are not only pursuing traditional refrigeration and air conditioning, but also using dual heating and cooling air conditioners, and even turning on air conditioners in transitional seasons. When the air conditioner is heating, the outdoor heat is transmitted to the room, and the surface temperature of the evaporator is lower than the outdoor ambient temperature, which will cause frosting. The defrosting effect of frost is better than that of hot refrigerant vapor, and the time is short, easy to operate and easy to manage. Air conditioners are also facing a huge challenge. Under the global warming effect, high temperature protection of air conditioner condensers is becoming more and more frequent in summer hot weather, which prevents people from using air conditioners in the hottest weather. It is imminent to solve the problem of high temperature protection of condensers.

Utility model content

The purpose of this utility model is to provide a fresh air air conditioning unit with defrosting function, which solves the problem of high temperature protection of the condenser.

The technical solution adopted by the utility model is that a fresh air air conditioner unit with defrosting function includes a chassis, and a compressor, an evaporative condenser and an evaporator connected by four interfaces of a four-way valve are arranged in the chassis, and the compressor The outlet is connected to the evaporative condenser through the four-way valve, the compressor inlet is connected to the evaporator through the four-way valve, the evaporative condenser and the evaporator are connected through the pipeline through the expansion valve, and the evaporative condenser and the evaporator are respectively equipped with spray Device a and spraying device b, and the evaporative condenser and evaporator are respectively connected with an exhaust fan and a blower, and the corresponding positions on both sides of the chassis and the exhaust fan and the blower are respectively provided with an exhaust port and an air supply port, and the side wall of the chassis is close to it The fresh air outlet a and the fresh air outlet b are respectively arranged in the upper part. The fresh air outlet a is close to the evaporative condenser, and the fresh air outlet b is close to the evaporator. There is a baffle in the middle of the chassis to completely separate the fresh air outlet a and the fresh air outlet b. The evaporator and evaporator are respectively located on both sides of the baffle, and an exhaust valve is installed between the fresh air outlet a and the fresh air outlet b, and the top of the chassis is provided with a return air outlet, and the return air outlet is located above the fresh air outlet b.

The utility model is also characterized in that,

Both fresh air outlet a and fresh air outlet b are equipped with air valves

The spraying device a includes a circulating water tank a arranged under the evaporative condenser. The circulating water tank a is respectively provided with a water pump a and a thermal resistance. The water pump a is connected to a plurality of high-pressure nozzles a through pipelines. side of the condenser.

The upper surface of the circulating water tank a is provided with a water baffle a, the top of the water baffle a is attached to the top wall of the cabinet, and the water baffle a separates the exhaust fan from the high-pressure nozzle a.

The spraying device b includes a circulating water tank b arranged below the evaporator. A water pump b is arranged in the circulating water tank b. The water pump b is connected to a plurality of high-pressure nozzles b through pipelines, and the plurality of high-pressure nozzles b are located on one side of the evaporator.

The upper surface of the circulating water tank b is provided with a water baffle b, the top of the water baffle b is attached to the top wall of the cabinet, and the water baffle b separates the air blower from the high-pressure nozzle b.

An expansion valve is arranged on the connecting pipeline between the evaporative condenser and the evaporator.

The beneficial effects of the utility model are:

1) The utility model is a fresh air air-conditioning unit with defrosting function, which can be used all year round and more humanized to meet people's needs for the indoor environment. It can provide heating in winter and cooling in summer, bringing warmth in winter and cooling in summer. To bring coolness, the sprinkler device of the evaporator section can also be turned on in excessive seasons to send cool fresh air into the room to make up for the lack of general air conditioners;

2) The utility model is a fresh air air conditioning unit with defrosting function. The condenser section uses evaporation and condensation, and the indoor exhaust air is used to cool the condenser, so as to reduce the high temperature protection of the condenser in high temperature weather. The high-pressure spray device in the evaporative condenser section can also be used for frosting in the heating cycle, multi-functional utilization, and improve the utilization rate of each component of the unit.

3) The evaporator section uses a high-pressure spray device, which can meet people's needs in transitional seasons, and can provide cool fresh air without turning on the refrigeration cycle, which is of great significance to air conditioning comfort and energy saving.

Description of drawings

Fig. 1 is a structural schematic diagram of a fresh air air conditioning unit with a defrosting function of the present invention.

In the figure, 1. Chassis, 2. Water baffle a, 3. Nozzle a, 4. Evaporative condenser, 5. Fresh air outlet a, 6. Exhaust valve, 7. Return air outlet, 8. Evaporator, 9. Nozzle b, 10. Water baffle b, 11. Air blower, 12. Air outlet, 13. Water pump b, 14. Circulating water tank b, 15. Expansion valve, 16. Fresh air outlet b, 17. Compressor, 18. Four-way Valve, 19. thermal resistance, 20. water pump a, 21. circulating water tank a, 22. exhaust fan, 23. air outlet.

Detailed ways

The utility model will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

The utility model is a fresh air air conditioner unit with a defrosting function, as shown in Figure 1, including a cabinet 1, which is provided with a compressor 17, an evaporative condenser 4 and an evaporation 8, the outlet of the compressor 17 communicates with the evaporative condenser 4 through the four-way valve 18, the inlet of the compressor 17 communicates with the evaporator 8 through the four-way valve 18, the evaporative condenser 4 and the evaporator 8 are connected through pipelines, and the evaporative An expansion valve 15 is arranged on the connecting pipeline of the condenser 4 and the evaporator 8, and the evaporative condenser 4 and the evaporator 8 are respectively provided with a spraying device a and a spraying device b, and the evaporative condenser 4 and the evaporator 8 are respectively An exhaust fan 22 and a blower fan 11 are connected, and the two sides of the cabinet 1 are respectively provided with an exhaust outlet 23 and an air supply outlet 12 at corresponding positions of the exhaust fan 22 and the blower fan 11. The air outlet b16, the fresh air outlet a5 and the fresh air outlet b16 are all equipped with air valves, the fresh air outlet a5 is close to the evaporative condenser 4, the fresh air outlet b16 is close to the evaporator 8, and the middle part of the chassis 1 is provided with a baffle to completely close the fresh air outlet a5 and the fresh air outlet b16. Separated, the evaporative condenser 4 and the evaporator 8 are respectively located on both sides of the baffle, and an exhaust valve 6 is arranged between the fresh air outlet a5 and the fresh air outlet b16, and the top of the chassis is provided with a return air outlet 7, which is located at the fresh air outlet above b16.

The spraying device a includes a circulating water tank a21 arranged under the evaporative condenser 4. The circulating water tank a21 is respectively provided with a water pump a20 and a thermal resistance 19. The water pump a20 is connected to a plurality of high-pressure nozzles a3 through pipelines, and the plurality of high-pressure nozzles a3 are located at Evaporative condenser 4 side. A water baffle a2 is arranged on the upper surface of the circulating water tank a21, and the top of the water baffle a2 is attached to the top wall of the cabinet 1, and the water baffle a2 separates the exhaust fan 22 from the high-pressure nozzle a3.

The spraying device b includes a circulating water tank b14 arranged below the evaporator 8, and a water pump b13 is arranged in the circulating water tank b14, and the water pump b13 is connected to a plurality of high-pressure nozzles b9 through pipelines, and the plurality of high-pressure nozzles b9 are located on the side of the evaporator 8. The upper surface of the circulating water tank b14 is provided with a water baffle b10, the top of the water baffle b10 is attached to the top wall of the cabinet 1, and the water baffle b10 separates the air blower 11 from the high-pressure nozzle b9.

The functions of the four-way valve 18 and the expansion valve 15 in a fresh air air-conditioning unit with a defrosting function of the utility model are specifically as follows:

The four-way valve 18 is a very important component, which is a control valve used to change the flow direction of Freon. When cooling, the four-way valve 18 passes the high-temperature and high-pressure gas from the compressor 17 into the evaporative condenser 4 through the movement of the valve plate. The high-temperature and high-pressure gas passes through the evaporator 8 (as a condensing device).

The expansion valve 15 is to realize throttling from the condensing pressure of the evaporating condenser 4 to the evaporating pressure of the evaporator 8, and at the same time controls the flow rate of the refrigerant.

The working principle of a fresh air air conditioning unit with defrosting function of the utility model is as follows:

Summer work process:

The indoor return air passes through the return air outlet 7, and a part of the indoor return air enters the side of the evaporative condenser 4 by adjusting the exhaust valve 6, and the other part of the indoor return air is mixed with the fresh air entering the fresh air outlet b16, and after mixing, it is evaporated and sucked by the evaporator 8 The cooling air is obtained by removing the heat from the hot air, and the cooling air is sent into the room through the blower 11; the indoor return air entering the side of the evaporative condenser 4 is mixed with the fresh air entering the fresh air outlet a5, and the mixed air is mixed with the water sprayed by the high-pressure nozzle a3 contact, an isenthalpic cooling process occurs, making the outer surface temperature of the evaporative condenser 4 lower, which not only takes away the heat of the evaporative condenser 4 but also prevents the evaporative condenser 4 from shutting down due to high temperature protection in high temperature weather.

Winter working process:

During the heating cycle in winter, the evaporator 8 is used as a condensing device to dissipate heat through the four-way valve to heat the air. The evaporative condenser 4 is used as an evaporating device to absorb the heat of the air and maintain the refrigerant cycle. The fresh air outlet b16 is closed in winter, and the indoor return air is heated through the evaporator 8 (as a condensing device) through the return air outlet 7, and the heated air is sent into the room through the blower 11; at this time, the exhaust valve 6 is closed state, the fresh air outlet a5 provides the air volume required by the evaporative condenser 4, and the outdoor fresh air is absorbed by the evaporative condenser 4 (as an evaporating device) to maintain the circulation of the refrigerant. In the fresh air air conditioner unit of the present utility model, frosting will occur on the evaporative condenser 4 (as an evaporating device) in winter, and the circulating water in the circulating water tank a21 is heated by the electric thermal resistance 19, sprayed from the nozzle a3 by the water pump a20, and passed through The spraying device a sprays hot water and can melt the frost layer on the evaporative condenser 4 (as an evaporating device), so as to achieve the purpose of defrosting.

Transition season work process:

The transitional season treatment process is that the refrigerant does not circulate, and the fresh air air conditioning unit of the utility model is used as a fresh air unit with a spraying device for cooling. The fresh air volume needed in the room is all provided by the fresh air outlet b16, and the fresh air contacts the water sprayed by the nozzle b9, and an isenthalpic cooling process occurs to meet the indoor air supply requirements; at this time, the exhaust valve 6 is fully opened, the fresh air outlet a5 is closed, and the indoor The return air is all discharged outside through the air return port 7 through the exhaust valve 6, and the transitional season does not use refrigerant and can meet people's requirements for temperature and fresh air, which is energy-saving and comfortable.

Through the above method, the utility model has a fresh air air conditioner unit with defrosting function, which has a simple structure and is easy to use; it can effectively solve the problem of high-temperature protection shutdown of the evaporative condenser 4; at the same time, it can effectively remove the frost layer on the surface of the evaporative condenser 4, It meets the requirements of users in different temperature environments.

Claims (7)

1. A fresh air air-conditioning unit with defrosting function, characterized in that it comprises a casing (1), and the casing (1) is provided with a compressor (17) connected by four interfaces of a four-way valve (18), An evaporative condenser (4) and an evaporator (8), the outlet of the compressor (17) communicates with the evaporative condenser (4) through a four-way valve (18), and the inlet of the compressor (17) passes through a four-way Valve (18) is communicated with evaporator (8), and described evaporative condenser (4) and evaporator (8) are connected through pipeline through expansion valve, and described evaporative condenser (4) and evaporator (8) A spraying device a and a spraying device b are respectively provided, and the evaporative condenser (4) and the evaporator (8) are respectively connected with an exhaust fan (22) and a blower (11), and the two cabinets (1) The corresponding positions of the side and the exhaust fan (22) and the blower (11) are respectively provided with an air exhaust port (23) and an air supply port (12), and the side wall of the cabinet (1) is respectively provided with a fresh air port a (5 ) and fresh air outlet b (16), the new air outlet a (5) is close to the evaporative condenser (4), the new air outlet b (16) is close to the evaporator (8), and the middle part of the chassis (1) is provided with The baffle completely separates the new air outlet a (5) and the new air outlet b (16), the evaporative condenser (4) and the evaporator (8) are respectively located on both sides of the baffle, and the new air outlet a (5 ) and the fresh air outlet b (16) is provided with an exhaust valve (6), and the top of the chassis is provided with a return air outlet (7), and the return air outlet (7) is located above the fresh air outlet b (16). 2. A fresh air air conditioning unit with a defrosting function according to claim 1, characterized in that, both the fresh air outlet a (5) and the fresh air outlet b (16) are provided with air valves. 3. A fresh air air-conditioning unit with defrosting function according to claim 1, characterized in that, said spraying device a comprises a circulating water tank a (21) arranged below the evaporative condenser (4), so A water pump a (20) and a thermal resistance (19) are respectively arranged in the circulating water tank a (21), and the water pump a (20) is connected with a plurality of high-pressure nozzles a (3) through pipelines, and a plurality of the high-pressure nozzles a (3) Located on one side of the evaporative condenser (4). 4. A fresh air air-conditioning unit with defrosting function according to claim 3, characterized in that, the upper surface of the circulating water tank a (21) is provided with a water retaining plate a (2), and the water retaining plate a (2) The top is attached to the top wall of the cabinet (1), and the water baffle a (2) separates the exhaust fan (22) from the high-pressure nozzle a (3). 5. A fresh air air conditioner unit with defrosting function according to claim 1, characterized in that, the spray device b comprises a circulating water tank b (14) arranged below the evaporator (8), and the circulating water tank b (14) A water pump b (13) is arranged in the water tank b (14), and the water pump b (13) is connected with a plurality of high-pressure nozzles b (9) through pipelines, and a plurality of the high-pressure nozzles b (9) are located in the evaporator (8) side. 6. A fresh air air conditioner unit with defrosting function according to claim 5, characterized in that, the upper surface of the circulating water tank b (14) is provided with a water retaining plate b (10), and the water retaining plate b (10) The top is attached to the top wall of the cabinet (1), and the water baffle b (10) separates the air blower (11) from the high-pressure nozzle b (9). 7. A fresh air air-conditioning unit with defrosting function according to claim 1, characterized in that an expansion valve (15) is arranged on the connecting pipeline between the evaporative condenser (4) and the evaporator (8) .