Fresh air heat exchanger

Abstract

The utility model relates to the field of fresh air heat exchange technology, specifically disclose a kind of fresh air heat exchanger, including rack and the heat exchange core in the inside of rack, rack is equipped with outdoor fresh air inlet and with outdoor fresh air inlet communication indoor air supply outlet, indoor return air outlet and with indoor return air outlet communication outdoor exhaust outlet respectively, still be equipped with the fresh air heat pump device for adjusting indoor air supply temperature and humidity in rack, fresh air heat pump device includes compressor, four-way valve connected with compressor, fresh air heat pump device still includes condenser and evaporator installed in the bottom of rack, condenser and evaporator are connected with four-way valve respectively, and there is the electronic expansion valve of interconnection between condenser and evaporator, by being equipped with fresh air heat exchange device in rack, when needing to carry out air exchange and send air to indoor, fresh air heat exchange device can control to send outdoor indoor fresh air cooling or heating, to improve the experience feeling of use.

Description

Technical Field

[0001] This utility model relates to the field of fresh air heat exchange technology, and in particular to a fresh air heat pump machine. Background Technology

[0002] A fresh air heat exchanger is a high-tech product that filters, purifies, and heats outdoor air before sending it indoors, while simultaneously filtering, purifying, and heat-exchanging polluted indoor air before expelling it outdoors. It is highly efficient, energy-saving, and environmentally friendly. However, current fresh air heat exchangers generally only have basic fresh air heat exchange functions and cannot regulate the temperature and humidity of the indoor air, resulting in a poor user experience when the temperature exceeds the human comfort range or the climate is relatively dry.

[0003] The technical problem to be solved by this application is: to design a fresh air heat exchanger that can adjust the temperature and humidity of indoor air supply. Utility Model Content

[0004] In order to overcome the shortcomings of the existing technology, the purpose of this utility model is to provide a fresh air heat exchanger that can regulate the temperature and humidity of indoor air supply.

[0005] The technical solution adopted by this utility model is as follows: a fresh air heat exchanger includes a frame and a heat exchange core located inside the frame. The frame is provided with an outdoor fresh air inlet and an indoor air supply outlet, an indoor return air outlet and an outdoor exhaust air outlet connected to the outdoor fresh air inlet. The frame is also provided with a fresh air heat pump device for adjusting the indoor air supply temperature and humidity. The fresh air heat pump device includes a compressor and a four-way valve connected to the compressor. The fresh air heat pump device also includes a condenser and an evaporator installed at the bottom of the frame. The condenser and evaporator are respectively connected to the four-way valve. An electronic expansion valve is provided between the condenser and the evaporator for interconnection.

[0006] In some implementations, the heat exchange core is located between the outdoor fresh air inlet and the indoor supply air outlet, and between the indoor return air outlet and the outdoor exhaust air outlet.

[0007] In some embodiments, the rack is also equipped with a supply fan and an exhaust fan, with the supply fan located between the outdoor fresh air inlet and the indoor supply air outlet, and the exhaust fan located between the indoor return air outlet and the outdoor exhaust air outlet.

[0008] In some implementations, both the supply fan and the exhaust fan are volute centrifugal fans.

[0009] In some implementations, the evaporator is located between the supply fan and the heat exchange core, and the condenser is located between the exhaust fan and the heat exchange core.

[0010] In some implementations, the bottom of the frame is also provided with a water collection tray and a drain outlet.

[0011] In some embodiments, the rack is also provided with a bypass ventilation duct that communicates with the outdoor fresh air inlet. The bypass ventilation duct is provided with a damper actuator, which is provided with a partition that is driven to it. The partition can be used to close or open the bypass ventilation duct.

[0012] In some implementations, a fresh air filter is also installed inside the rack corresponding to the outdoor fresh air inlet, and a return air filter is also installed inside the rack corresponding to the indoor return air outlet. This utility model has the following technical effects: By installing a fresh air heat pump device in the frame, when it is necessary to ventilate and cool the room, the compressor can draw in the refrigerant and compress it into high-temperature and high-pressure vapor before discharging it to the evaporator. The return air in the room can carry away the heat released by the refrigerant through the evaporator and be discharged to the outside. After the high-temperature and high-pressure vapor has its heat carried away, it condenses into a high-pressure liquid. The high-pressure liquid is sprayed into the condenser after being throttled by the electronic expansion valve and begins to evaporate under the corresponding low pressure. During evaporation, it can absorb the heat of the fresh air passing through the condenser and remove the moisture in the fresh air at the same time, thereby reducing the temperature and humidity of the fresh air supplied to the room and improving the user experience. When indoor ventilation and heating are required, the compressor draws in refrigerant and compresses it into high-temperature, high-pressure vapor before discharging it to the condenser. When outdoor fresh air passes through the condenser, it absorbs the heat released by the refrigerant, thus heating the fresh air before it is sent into the room, thereby achieving the effect of heating the indoor fresh air. When indoor return air is drawn back, the high-pressure vapor in the condenser condenses into high-pressure liquid after the heat is carried away. At this time, the high-pressure liquid is sprayed into the evaporator after being throttled by the electronic expansion valve, and evaporates under the corresponding low pressure, absorbing the heat of the return air passing through the evaporator, thus cooling the return air before it is discharged outdoors. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the indoor fresh air flow of the fresh air heat exchanger of this utility model; Figure 2 This is a schematic diagram of the indoor return air flow of the fresh air heat exchanger of this utility model; Figure 3 This is a schematic diagram of the bypass ventilation duct of the fresh air heat exchanger of this utility model; Figure 4 This is a side view of the fresh air heat exchanger of this utility model; Figure 5 This is a top view of the structure of the fresh air heat exchanger of this utility model.

[0014] The labels and names in the diagram correspond as follows: 1. Rack; 2. Heat exchange core; 10. Outdoor fresh air inlet; 11. Indoor air supply outlet; 12. Indoor return air outlet; 13. Outdoor exhaust outlet; 3. Fresh air heat pump unit; 30. Compressor; 31. Condenser; 32. Evaporator; 14. Supply fan; 15. Exhaust fan; 16. Drain tray; 17. Drain outlet; 4. Bypass ventilation duct; 41. Air valve actuator; 42. Partition; 18. Fresh air filter; 19. Return air filter. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figure 1-5 This utility model provides a technical solution: a fresh air heat exchanger, including a frame 1 and a heat exchange core 2 located inside the frame 1. The frame 1 is respectively provided with an outdoor fresh air inlet 10 and an indoor air supply outlet 11, an indoor return air outlet 12, and an outdoor exhaust outlet 13 connected to the outdoor fresh air inlet 10 through a pipe or a cavity enclosed by a plate. A fresh air filter 18 is also provided inside the frame 1 corresponding to the outdoor fresh air inlet 10, and a return air filter 19 is also provided inside the frame 1 corresponding to the indoor return air outlet 12. A fresh air heat pump device 3 for adjusting the indoor supply air temperature and humidity is also provided inside the frame 1. A supply fan 14 and an exhaust fan 15 are also respectively provided inside the frame 1. The fan 14 is located between the outdoor fresh air inlet 10 and the indoor air supply outlet 11, and the exhaust fan 15 is located between the indoor return air outlet 12 and the outdoor exhaust outlet 13. Both the air supply fan 14 and the exhaust fan 15 are volute centrifugal fans. When indoor air supply is required, the air supply fan 14 is started, and outdoor fresh air is drawn into the outdoor fresh air inlet 10. The outdoor fresh air is filtered by the fresh air filter 18, and then enters the room through the heat exchange core 2 and the fresh air heat pump device 3, thereby achieving the purpose of supplying air to the room. When indoor air exhaust is required, the exhaust fan 15 is started, and indoor air is drawn into the indoor return air outlet 12. After being filtered by the return air filter 19, it is discharged outdoors through the heat exchange core 2 and the fresh air heat pump device 3.

[0017] The fresh air heat pump unit 3 includes a compressor 30 and a four-way valve connected to the compressor 30. The compressor 30 connects to two holes of the four-way valve. The fresh air heat pump unit 3 also includes a condenser 31 and an evaporator 32 installed at the bottom of the frame 1. The evaporator 32 is located between the supply fan 14 and the heat exchange core 2, and the condenser 31 is located between the exhaust fan 15 and the heat exchange core 2. The condenser 31 and the evaporator 32 are respectively connected to the other two holes of the four-way valve. An electronic expansion valve is provided between the condenser 31 and the evaporator 32 for interconnection. By installing the fresh air heat pump unit 3 in the frame 1, when it is necessary to... When the room is being ventilated and cooled, the compressor 30 can draw in the refrigerant and compress it into high-temperature and high-pressure vapor before discharging it to the evaporator 32. The return air from the room passes through the evaporator 32 and carries away the heat released by the refrigerant, which is then discharged to the outside. After the high-temperature and high-pressure vapor has its heat carried away, it condenses into a high-pressure liquid. The high-pressure liquid is then injected into the condenser 31 after being throttled by the electronic expansion valve, and begins to evaporate under the corresponding low pressure. During evaporation, it can absorb the heat from the fresh air passing through the condenser 31 and remove the moisture from the fresh air at the same time, thereby reducing the temperature and humidity of the fresh air supplied to the room and improving the user experience. When indoor ventilation and heating are required, compressor 30 draws in refrigerant and compresses it into high-temperature, high-pressure vapor before discharging it to condenser 31. When outdoor fresh air passes through condenser 31, it absorbs the heat released by the refrigerant, thus heating the fresh air before it is sent into the room, thereby achieving the effect of heating the indoor fresh air. When indoor return air is in the process, the high-pressure vapor in condenser 31 condenses into high-pressure liquid after the heat is carried away. At this time, the high-pressure liquid is sprayed into evaporator 32 after being throttled by electronic expansion valve, and evaporates under corresponding low pressure, absorbing the heat of the return air passing through evaporator 32, thus cooling the return air before it is discharged outdoors.

[0018] The heat exchange core 2 is located between the outdoor fresh air inlet 10 and the indoor air supply outlet 11, and between the indoor return air outlet 12 and the outdoor exhaust air outlet 13.

[0019] To prevent liquids generated during operation from dripping directly onto the ground, a water collection tray 16 and a drain outlet 17 are provided at the bottom of the frame 1.

[0020] The rack 1 is also equipped with a bypass ventilation duct 4 that is connected to the outdoor fresh air inlet 10. The other end of the bypass ventilation duct 4 is also connected to the indoor air outlet 11. The bypass ventilation duct 4 is equipped with a damper actuator 41. The damper actuator 41 is equipped with a partition 42 that is connected to it. The partition 42 can be used to close or open the bypass ventilation duct 4. When the outdoor temperature is within the range of human comfort temperature, the damper actuator 41 can be controlled to open the partition 42, which is equivalent to opening the bypass ventilation duct 4. This allows the outdoor fresh air to flow directly from the bypass ventilation duct 4 to the indoor air outlet 11 and be sent into the room without having to go through the heat exchange core 2 and the fresh air heat pump device 3 for heating or cooling.

[0021] The working principle of this utility model is as follows: By installing a fresh air heat pump device 3 in the frame 1, when it is necessary to ventilate and cool the room, the compressor 30 can draw in the refrigerant and compress it into high-temperature and high-pressure vapor and then discharge it to the evaporator 32. The return air in the room can carry away the heat released by the refrigerant through the evaporator 32 and discharge it to the outside. After the high-temperature and high-pressure vapor carries away the heat, it condenses into a high-pressure liquid. The high-pressure liquid is sprayed into the condenser 31 after being throttled by the electronic expansion valve, and begins to evaporate under the corresponding low pressure. During evaporation, it can absorb the heat of the fresh air passing through the condenser 31 and remove the moisture in the fresh air at the same time, thereby reducing the temperature and humidity of the fresh air supplied to the room and improving the user experience. When indoor ventilation and heating are required, compressor 30 draws in refrigerant and compresses it into high-temperature, high-pressure vapor before discharging it to condenser 31. When outdoor fresh air passes through condenser 31, it absorbs the heat released by the refrigerant, thus heating the fresh air before it is sent into the room, thereby achieving the effect of heating the indoor fresh air. When indoor return air is in the process, the high-pressure vapor in condenser 31 condenses into high-pressure liquid after the heat is carried away. At this time, the high-pressure liquid is sprayed into evaporator 32 after being throttled by electronic expansion valve, and evaporates under corresponding low pressure, absorbing the heat of the return air passing through evaporator 32, thus cooling the return air before it is discharged outdoors.

[0022] Finally, it should be noted that the above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A fresh air heat exchanger, comprising a frame and a heat exchange core located inside the frame, wherein the frame is respectively provided with an outdoor fresh air inlet and an indoor air supply outlet, an indoor return air outlet, and an outdoor exhaust air outlet connected to the outdoor fresh air inlet, characterized in that, The rack is also equipped with a fresh air heat pump device for regulating the indoor air supply temperature and humidity. The fresh air heat pump device includes a compressor and a four-way valve connected to the compressor. The fresh air heat pump device also includes a condenser and an evaporator installed at the bottom of the rack. The condenser and evaporator are respectively connected to the four-way valve. An electronic expansion valve is connected between the condenser and the evaporator.

2. The fresh air heat exchanger according to claim 1, characterized in that, The heat exchange core is located between the outdoor fresh air inlet and the indoor air supply outlet, and between the indoor return air outlet and the outdoor exhaust air outlet.

3. The fresh air heat exchanger according to claim 1, characterized in that, The frame is also equipped with a supply fan and an exhaust fan. The supply fan is located between the outdoor fresh air inlet and the indoor supply air outlet, and the exhaust fan is located between the indoor return air outlet and the outdoor exhaust air outlet.

4. The fresh air heat exchanger according to claim 3, characterized in that, Both the supply fan and the exhaust fan are volute centrifugal fans.

5. The fresh air heat exchanger according to claim 3, characterized in that, The evaporator is located between the supply fan and the heat exchange core, and the condenser is located between the exhaust fan and the heat exchange core.

6. The fresh air heat exchanger according to claim 1, characterized in that, The bottom of the frame is also equipped with a water receiving tray and a drain outlet.

7. The fresh air heat exchanger according to claim 1, characterized in that, The rack is also equipped with a bypass ventilation duct that connects to the outdoor fresh air inlet. The bypass ventilation duct is equipped with a damper actuator, and the damper actuator is equipped with a partition that is driven to it. The partition can be used to close or open the bypass ventilation duct.

8. The fresh air heat exchanger according to claim 1, characterized in that, The rack is also equipped with a fresh air filter corresponding to the outdoor fresh air inlet, and the rack is also equipped with a return air filter corresponding to the indoor return air outlet.

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