Air source heat pump unit with double cold and double temperature heat recovery function
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI QIZHAO REFRIGERATION TECHNOLOGY CO LTD
- Filing Date
- 2025-07-10
- Publication Date
- 2026-06-26
Smart Images
Figure CN224415289U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of air conditioning system technology, and in particular relates to an air source heat pump unit with dual cooling and dual temperature heat recovery function. Background Technology
[0002] Currently, most air source heat pump units on the market use a single-circuit, single-temperature water outlet method. When it is necessary to supply underfloor heating, air temperature regulation, or other corresponding needs in daily life, different heat pumps are required, which greatly increases the cost and requires a large heat pump installation space. For example, application number 31821623456.3 discloses an air source heat pump unit. Through the various structures of the heat pump unit, it can only achieve cooling or heating of air, with relatively simple functions and a relatively simple cooling source. Utility Model Content
[0003] The purpose of this utility model is to provide an air source heat pump unit with dual cooling and dual temperature heat recovery function that can solve the above-mentioned problems.
[0004] According to one aspect of the present invention, an air source heat pump unit with dual cooling and dual temperature heat recovery function is provided, comprising:
[0005] Air conditioning compressor;
[0006] The heat recovery heat exchanger is connected to the outlet end of the compressor on the air conditioning side;
[0007] The air conditioning fan coil temperature regulation system is connected to the air conditioning side compressor through a heat recovery heat exchanger. The air conditioning fan coil temperature regulation system includes the air conditioning fan coil side heat exchanger.
[0008] The air conditioning floor heating temperature regulation system is connected to the air conditioning side compressor through a heat recovery heat exchanger. The air conditioning floor heating temperature regulation system includes the air conditioning floor heating side heat exchanger.
[0009] The water-cooled temperature regulation system is connected to the air conditioning side compressor through a heat recovery heat exchanger. The water-cooled temperature regulation system includes a water-cooled heat exchanger, which is equipped with a water-cooled side inlet and a water-cooled side outlet.
[0010] In some embodiments, the water cooling temperature regulation system further includes a cooling tower and a water pump. The cooling tower is connected to the water cooling side inlet via the water pump. The water cooling temperature regulation system is as follows: the air outlet of the air conditioning side compressor is connected to the heat recovery heat exchanger; the first outlet of the heat recovery heat exchanger is connected to the E port of the air conditioning side four-way valve; the C port of the air conditioning side four-way valve is connected to the water cooling heat exchanger via the air conditioning fan coil side heat exchanger; the water cooling heat exchanger is connected to the air conditioning fan coil side heat exchanger and the air conditioning underfloor heating side heat exchanger via an economizer; and then connected to the air intake of the air conditioning side compressor via the C port of the air conditioning side four-way valve.
[0011] In some implementations, the water cooling temperature control system also includes a water filter, through which the water pump is connected to the cooling tower.
[0012] In some implementations, the air conditioning fan coil temperature regulation system is as follows: the air outlet of the air conditioning side compressor is connected to the heat recovery heat exchanger, the first outlet of the heat recovery heat exchanger is connected to the air conditioning side four-way valve, and the C port of the air conditioning side four-way valve is sequentially connected to the air conditioning fan coil side heat exchanger, the economizer, the air conditioning side finned heat exchanger, the E port of the air conditioning side four-way valve, and the air intake end of the air conditioning side compressor.
[0013] In some embodiments, the air conditioning fan coil temperature regulation system further includes an air conditioning fan coil side refrigeration expansion valve, a first one-way valve, a liquid injection enthalpy-increasing expansion valve, an air conditioning heating expansion valve, and a second one-way valve. The air conditioning fan coil side refrigeration expansion valve is connected in parallel with the first one-way valve and is located between the air conditioning fan coil side heat exchanger and the economizer. The first one-way valve is connected from the air conditioning fan coil side heat exchanger to the economizer side. The liquid injection enthalpy-increasing expansion valve is connected to the first outlet of the economizer. The air conditioning heating expansion valve is connected in parallel with the second one-way valve and is located between the air conditioning side finned heat exchanger and the liquid injection enthalpy-increasing expansion valve.
[0014] In some implementations, the air conditioning floor heating temperature regulation system is as follows: the air outlet of the air conditioning side compressor is connected to the heat recovery heat exchanger, the first outlet of the heat recovery heat exchanger is connected to the air conditioning side four-way valve, and the C port of the air conditioning side four-way valve is sequentially connected to the air conditioning floor heating side heat exchanger, the economizer, the air conditioning side finned heat exchanger, the E port of the air conditioning side four-way valve, and the air intake end of the air conditioning side compressor.
[0015] In some embodiments, the air conditioning floor heating temperature regulation system further includes a third one-way valve, a fourth one-way valve, a fifth one-way valve, and an air conditioning floor heating side expansion valve. The third one-way valve and the fourth one-way valve are connected in parallel and in opposite directions. The third one-way valve and the fourth one-way valve are located between the air conditioning side four-way valve and the air conditioning floor heating side heat exchanger. The fifth one-way valve is connected in parallel with the air conditioning floor heating side expansion valve and is located between the air conditioning floor heating side heat exchanger and the economizer. The fifth one-way valve is open from the air conditioning floor heating side heat exchanger to the economizer side.
[0016] In some implementations, an air source heat pump unit with dual cooling and dual temperature heat recovery function also includes a heat exchange fan, which corresponds to the air conditioner side fin heat exchanger.
[0017] In some implementations, the air source heat pump unit with dual cooling and dual temperature heat recovery function also includes a gas-liquid separator, and a gas-liquid separator is provided between the four-way valve on the air conditioning side and the suction end of the air conditioning side compressor.
[0018] In some embodiments, an air source heat pump unit with dual cooling and dual temperature heat recovery function also includes multiple filters, each connected to a corresponding expansion valve.
[0019] The beneficial effects of this utility model are:
[0020] 1. By equipping the air conditioning fan coil temperature regulation system and the air conditioning underfloor heating temperature regulation system, dual temperature output can be achieved, which can meet the temperature regulation of both fan coil units and underfloor heating, thus satisfying different usage requirements and greatly saving costs.
[0021] 2. By installing a heat recovery heat exchanger, heat exchange can be carried out, and it is convenient to connect to domestic hot water. Heat can be used rationally and energy-saving effect can be improved.
[0022] 3. With the water cooling temperature regulation system, cooling water can enter through the water cooling side inlet and exchange heat in the water cooling heat exchanger. This can regulate the temperature of fan coil units and underfloor heating. Based on the air source temperature regulation of the air conditioning compressor, the water source temperature can be regulated to achieve a dual cooling effect.
[0023] 4. Through the various structures of the air conditioning fan coil temperature regulation system, heating in winter and cooling in summer can be achieved, which can meet the cooling and heating requirements of the fan coil unit and realize the cooling or heating requirements of the air, and the temperature is adjustable.
[0024] 5. Through the various structures of the air conditioning and floor heating temperature regulation system, different water temperatures for cooling or heating can be output, which facilitates the cooling or heating of the floor heating system and meets the cooling and heating requirements.
[0025] 6. The entire unit can simultaneously achieve two temperature outputs, which meet different output temperature requirements, without the need for multiple heat pump units, greatly saving costs and reducing the space occupied by the entire unit. Attached Figure Description
[0026] Figure 1 This is a schematic diagram of the principle of an air source heat pump unit with dual cooling and dual heating heat recovery function according to this utility model. Detailed Implementation
[0027] The present invention will now be described in further detail with reference to the accompanying drawings.
[0028] Reference Figure 1 An air source heat pump unit with dual cooling and dual temperature heat recovery functions includes:
[0029] Air conditioning compressor 1;
[0030] The heat recovery heat exchanger 2 is connected to the outlet of the air conditioning compressor 1. The heat recovery heat exchanger 2 is equipped with a heat recovery inlet 21 and a heat recovery outlet 22. Therefore, low-temperature water can enter through the heat recovery inlet 21 and be heated by excess heat at the heat recovery heat exchanger 2. The heated water is then output through the heat recovery outlet 22, which can provide domestic hot water or other hot water as needed, thus making full use of heat.
[0031] The air conditioning fan coil temperature regulation system 4 is connected to the air conditioning side compressor 1 through the heat recovery heat exchanger 2. The air conditioning fan coil temperature regulation system 4 includes the air conditioning fan coil side heat exchanger 41.
[0032] The air conditioning floor heating temperature regulation system 5 is connected to the air conditioning side compressor 1 through the heat recovery heat exchanger 2. The air conditioning floor heating temperature regulation system 5 includes the air conditioning floor heating side heat exchanger 51.
[0033] The water-cooled temperature regulation system 3 is connected to the air conditioning side compressor 1 through the heat recovery heat exchanger 2. The water-cooled temperature regulation system 3 includes a water-cooled heat exchanger 31, which is provided with a water-cooled side inlet 32 and a water-cooled side outlet 33.
[0034] In this invention, the power of the air conditioning compressor 1 can be increased or decreased according to the specific application environment to meet the heating and cooling requirements of different scenarios. The air conditioning fan coil temperature control system 4 exchanges heat through the air conditioning fan coil side heat exchanger 41 to achieve cooling or heating of the air conditioning fan coil unit, meeting temperature control requirements. The air conditioning underfloor heating temperature control system 5 exchanges heat through the air conditioning underfloor heating side heat exchanger 51, conveniently providing cooled or heated water to the underfloor heating system to meet the cooling or heating effects of the underfloor heating system and the temperature control requirements of different seasons. The water cooling side inlet 32 of the water cooling temperature control system 3 can be connected to external cooling water, exchanging heat through the water cooling heat exchanger 31 to facilitate cooling of the air conditioning fan coil unit and underfloor heating system, achieving the purpose of temperature control.
[0035] The water cooling temperature regulation system 3 also includes a cooling tower 34 and a water pump 35. The cooling tower 34 is connected to the water cooling side inlet 32 through the water pump 35. The water cooling temperature regulation system 3 is as follows: the air outlet of the air conditioning side compressor 1 is connected to the heat recovery heat exchanger 2. The first outlet of the heat recovery heat exchanger 2 is connected to the E port of the air conditioning side four-way valve 6. The C port of the air conditioning side four-way valve 6 is connected to the water cooling heat exchanger 31 through the air conditioning fan coil side heat exchanger 41. The water cooling heat exchanger 31 is connected to the air conditioning fan coil side heat exchanger 41 and the air conditioning underfloor heating side heat exchanger 51 through the economizer, and then connected to the air intake of the air conditioning side compressor 1 through the C port of the air conditioning side four-way valve 6.
[0036] In actual use, the cooling tower 34 can be filled with cooling water, which can provide low-temperature liquid for heat exchange in the water-cooled heat exchanger 31 to achieve the effect of water source cooling.
[0037] The water cooling temperature control system 3 also includes a water filter 36, and the water pump 35 is connected to the cooling tower 34 through the water filter 36. By providing the water filter 36, the water that needs to be input into the water cooling heat exchanger 31 can be filtered to prevent impurities from flowing in and to ensure the service life of the water cooling heat exchanger 31.
[0038] When in use, the water-cooled temperature control system 3 can cool the fan coil units and underfloor heating, as detailed below:
[0039] When used in environments with high outside temperatures, the refrigerant from the air conditioning compressor 1 is delivered to the air conditioning finned heat exchanger 8 via port E of the air conditioning four-way valve 6 for heat exchange. After heat exchange with the cooling water in the water-cooled heat exchanger 31, it passes through the second one-way valve 48 and then enters the air conditioning fan coil heat exchanger 41 and the air conditioning underfloor heating heat exchanger 51 for further heat exchange, thus achieving a cooling effect on the air conditioning fan coil units and underfloor heating. Finally, after heat exchange, the refrigerant flows back to the air conditioning compressor 1 via port C of the air conditioning four-way valve 6.
[0040] The air conditioning fan coil temperature regulation system 4 is as follows: the air outlet of the air conditioning side compressor 1 is connected to the heat recovery heat exchanger 2, the first outlet of the heat recovery heat exchanger 2 is connected to the air conditioning side four-way valve 6, and the C port of the air conditioning side four-way valve 6 is connected in sequence to the air conditioning fan coil side heat exchanger 41, the economizer 7, the air conditioning side finned heat exchanger 8, the E port of the air conditioning side four-way valve 6, and the air intake of the air conditioning side compressor 1.
[0041] The air conditioning fan coil temperature control system 4 also includes an air conditioning fan coil side cooling expansion valve 44, a first one-way valve 45, a liquid injection enthalpy-increasing expansion valve 46, an air conditioning heating expansion valve 47, and a second one-way valve 48. The air conditioning fan coil side cooling expansion valve 44 and the first one-way valve 45 are connected in parallel and are located between the air conditioning fan coil side heat exchanger 41 and the economizer 7. The first one-way valve 45 is connected from the air conditioning fan coil side heat exchanger 41 to the economizer 7. The liquid injection enthalpy-increasing expansion valve 46 is connected to the first outlet of the economizer 7. The air conditioning heating expansion valve 47 and the second one-way valve 48 are connected in parallel and are located between the air conditioning side finned heat exchanger 8 and the liquid injection enthalpy-increasing expansion valve 46.
[0042] When in use, the air conditioning fan coil temperature control system 4 can cool or heat the fan coil unit, as detailed below:
[0043] When the air conditioning fan coil temperature control system 4 needs to output heated water, i.e., when used in low-temperature environments such as winter, the refrigerant from the air conditioning compressor 1 flows through port C of the air conditioning four-way valve 6 to the air conditioning fan coil heat exchanger 41. At this time, the low-temperature water flowing into the air conditioning fan coil heat exchanger 41 undergoes heat exchange, causing its temperature to rise and thus heating the air conditioning fan coil unit. After flowing out of the air conditioning fan coil heat exchanger 41, the refrigerant passes through the first one-way valve 45 and is then transported to the air conditioning heating expansion valve 47, and then to the air conditioning finned heat exchanger 8 for heat exchange. At this time, the second one-way valve 48 is not open. The refrigerant after heat exchange at the air conditioning finned heat exchanger 8 flows back in through port E of the air conditioning four-way valve 6 and finally flows back to the air conditioning compressor 1. This cycle continues, completing the heating of the fan coil unit.
[0044] Conversely, when the air conditioning fan coil temperature control system 4 needs to output cooled water, i.e., when used in high-temperature environments such as summer, the refrigerant from the air conditioning compressor 1 is delivered through port E of the air conditioning four-way valve 6 to the air conditioning finned heat exchanger 8 for heat exchange. Then, it is delivered through the second one-way valve 48 to the air conditioning fan coil side cooling expansion valve 44, and finally to the air conditioning fan coil side heat exchanger 41 for heat exchange. This allows the high-temperature water to be cooled after heat exchange, resulting in cooled water flowing out and thus cooling the air conditioning fan coil unit. The refrigerant after heat exchange in the air conditioning fan coil side heat exchanger 41 flows back through port C of the air conditioning four-way valve 6 and finally returns to the air conditioning compressor 1, achieving cooling of the fan coil unit.
[0045] In actual use, when heating at low temperatures, the liquid injection enthalpy expansion valve 46 opens, and the air conditioner-side compressor 1 is directly connected to the economizer 7, accelerating heat exchange.
[0046] The air conditioning and floor heating temperature regulation system 5 is as follows: the air outlet of the air conditioning compressor 1 is connected to the heat recovery heat exchanger 2, the first outlet of the heat recovery heat exchanger 2 is connected to the air conditioning four-way valve 6, and the C port of the air conditioning four-way valve 6 is connected in sequence to the air conditioning floor heating heat exchanger 51, the economizer 7, the air conditioning finned heat exchanger 8, the E port of the air conditioning four-way valve 6, and the air intake of the air conditioning compressor 1.
[0047] The air conditioning and floor heating temperature regulation system 5 also includes a third one-way valve 54, a fourth one-way valve 55, a fifth one-way valve 56, and an air conditioning and floor heating side expansion valve 57. The third one-way valve 54 and the fourth one-way valve 55 are connected in parallel and in opposite directions. The third one-way valve 54 and the fourth one-way valve 55 are located between the air conditioning side four-way valve 6 and the air conditioning and floor heating side heat exchanger 51. The fifth one-way valve 56 is connected in parallel with the air conditioning and floor heating side expansion valve 57 and is located between the air conditioning and floor heating side heat exchanger 51 and the economizer 7. The fifth one-way valve 56 is open from the air conditioning and floor heating side heat exchanger 51 to the economizer 7.
[0048] When in use, this utility model can cool or heat underfloor heating. The specific cooling or heating process is as follows:
[0049] When the air conditioning and floor heating temperature control system 5 needs to output heated water, i.e., when used in low-temperature environments such as winter, the refrigerant from the air conditioning compressor 1 flows through port C of the air conditioning four-way valve 6 and then through the fourth one-way valve 55 to the air conditioning floor heating heat exchanger 51. At this time, the low-temperature water undergoes heat exchange at the air conditioning floor heating heat exchanger 51, causing the water temperature to rise, which is beneficial for achieving the heating effect of the floor heating. After the refrigerant flows out of the air conditioning floor heating heat exchanger 51, it passes through the fifth one-way valve 56 and then through the economizer 7; subsequently, it enters the air conditioning finned heat exchanger 8 through the air conditioning heating expansion valve 47 for heat exchange. At this time, the second one-way valve 48 is not open. The refrigerant after heat exchange at the air conditioning finned heat exchanger 8 flows in through port E of the air conditioning four-way valve 6 and finally flows back to the air conditioning compressor 1, thus completing the floor heating cycle.
[0050] Conversely, when the air conditioning and floor heating temperature control system 5 needs to output cooled water, i.e., when used in high-temperature environments such as summer, the refrigerant from the air conditioning compressor 1 undergoes preliminary heat exchange in the heat recovery heat exchanger 2, and then is transported through port E of the air conditioning four-way valve 6 to the air conditioning finned heat exchanger 8 for heat exchange. Subsequently, it is transported through the second one-way valve 48 to the air conditioning and floor heating side cooling expansion valve 57, and then to the air conditioning and floor heating side heat exchanger 51 for heat exchange. This allows the high-temperature water flowing in to be cooled after heat exchange, resulting in cooled water flowing out, thus achieving cooling of the floor heating system. After heat exchange in the air conditioning and floor heating side heat exchanger 51, the refrigerant flows in through port C of the air conditioning four-way valve 6 and finally returns to the air conditioning compressor 1, achieving cooling of the fan coil unit.
[0051] The air source heat pump unit with dual cooling and dual temperature heat recovery function of this utility model also includes a heat exchange fan 9, which corresponds to the air conditioner side finned heat exchanger 8. Therefore, in use, the heat exchange fan 9 can act on the air conditioner side finned heat exchanger 8 to accelerate the heat exchange efficiency at the air conditioner side finned heat exchanger 8.
[0052] The air source heat pump unit with dual cooling and dual temperature heat recovery function of this utility model also includes a gas-liquid separator 10. The gas-liquid separator 10 is provided between the air conditioner-side four-way valve 6 and the air conditioner-side compressor 1 suction end. Thus, by providing the gas-liquid separator 10, the refrigerant that finally flows back to the air conditioner-side compressor 1 can be separated into gas and liquid, ensuring the normal operation of each compressor.
[0053] An air source heat pump unit with dual cooling and dual heating heat recovery function also includes multiple filters 30, each connected to a corresponding expansion valve. This filters impurities, preventing them from entering the expansion valves and protecting them, thus ensuring their normal service life.
[0054] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several modifications and improvements can be made without departing from the inventive concept of the present utility model, and these all fall within the protection scope of the present utility model.
Claims
1. An air-source heat pump unit with dual cooling and dual heating heat recovery functions, characterized in that, include: Air conditioning side compressor (1); The heat recovery heat exchanger (2) is connected to the outlet end of the air conditioning side compressor (1); The air conditioning fan coil temperature regulation system (4) is connected to the air conditioning side compressor (1) through the heat recovery heat exchanger (2), and the air conditioning fan coil temperature regulation system (4) includes an air conditioning fan coil side heat exchanger (41); The air conditioning floor heating temperature regulation system (5) is connected to the air conditioning side compressor (1) through the heat recovery heat exchanger (2), and the air conditioning floor heating temperature regulation system (5) includes an air conditioning floor heating side heat exchanger (51); The water cooling temperature regulation system (3) is connected to the air conditioning side compressor (1) through the heat recovery heat exchanger (2). The water cooling temperature regulation system (3) includes a water cooling heat exchanger (31), which is provided with a water cooling side inlet (32) and a water cooling side outlet (33).
2. An air source heat pump unit with dual cooling and dual heating heat recovery function according to claim 1, characterized in that, The water cooling temperature regulation system (3) also includes a cooling tower (34) and a water pump (35). The cooling tower (34) is connected to the water cooling side inlet (32) through the water pump (35). The water cooling temperature regulation system (3) is as follows: the air outlet of the air conditioning side compressor (1) is connected to the heat recovery heat exchanger (2). The first outlet of the heat recovery heat exchanger (2) is connected to the E port of the air conditioning side four-way valve (6). The C port of the air conditioning side four-way valve (6) is connected to the water cooling heat exchanger (31) through the air conditioning fan coil side heat exchanger (41). The water cooling heat exchanger (31) is connected to the air conditioning fan coil side heat exchanger (41) and the air conditioning floor heating side heat exchanger (51) through the economizer (), and then connected to the air intake of the air conditioning side compressor (1) through the C port of the air conditioning side four-way valve (6).
3. An air source heat pump unit with dual cooling and dual heating heat recovery function according to claim 2, characterized in that, The water cooling temperature regulation system (3) also includes a water filter (36), and the water pump (35) is connected to the cooling tower (34) through the water filter (36).
4. An air source heat pump unit with dual cooling and dual heating heat recovery function according to any one of claims 1 to 3, characterized in that, The air conditioning fan coil temperature regulation system (4) is as follows: the air outlet of the air conditioning side compressor (1) is connected to the heat recovery heat exchanger (2), the first outlet of the heat recovery heat exchanger (2) is connected to the air conditioning side four-way valve (6), and the C port of the air conditioning side four-way valve (6) is connected in sequence to the air conditioning fan coil side heat exchanger (41), the economizer (7), the air conditioning side finned heat exchanger (8), the E port of the air conditioning side four-way valve (6), and the air intake end of the air conditioning side compressor (1).
5. An air source heat pump unit with dual cooling and dual heating heat recovery function according to claim 4, characterized in that, The air conditioning fan coil temperature regulation system (4) also includes an air conditioning fan coil side refrigeration expansion valve (44), a first one-way valve (45), a liquid injection enthalpy-increasing expansion valve (46), an air conditioning heating expansion valve (47), and a second one-way valve (48). The air conditioning fan coil side refrigeration expansion valve (44) is connected in parallel with the first one-way valve (45) and is located between the air conditioning fan coil side heat exchanger (41) and the economizer (7). The first one-way valve (45) is connected from the air conditioning fan coil side heat exchanger (41) to the economizer (7). The liquid injection enthalpy-increasing expansion valve (46) is connected to the first outlet of the economizer (7). The air conditioning heating expansion valve (47) is connected in parallel with the second one-way valve (48) and is located between the air conditioning side finned heat exchanger (8) and the liquid injection enthalpy-increasing expansion valve (46).
6. An air source heat pump unit with dual cooling and dual heating heat recovery function according to claim 5, characterized in that, The air conditioning floor heating temperature regulation system (5) is as follows: the air outlet of the air conditioning side compressor (1) is connected to the heat recovery heat exchanger (2), the first outlet of the heat recovery heat exchanger (2) is connected to the air conditioning side four-way valve (6), and the C port of the air conditioning side four-way valve (6) is connected in sequence to the air conditioning floor heating side heat exchanger (51), the economizer (7), the air conditioning side finned heat exchanger (8), the E port of the air conditioning side four-way valve (6), and the air intake of the air conditioning side compressor (1).
7. An air source heat pump unit with dual cooling and dual heating heat recovery function according to claim 6, characterized in that, The air conditioning floor heating temperature regulation system (5) also includes a third one-way valve (54), a fourth one-way valve (55), a fifth one-way valve (56), and an air conditioning floor heating side expansion valve (57). The third one-way valve (54) and the fourth one-way valve (55) are connected in parallel and their directions are opposite. The third one-way valve (54) and the fourth one-way valve (55) are located between the air conditioning side four-way valve (6) and the air conditioning floor heating side heat exchanger (51). The fifth one-way valve (56) is connected in parallel with the air conditioning floor heating side expansion valve (57) and is located between the air conditioning floor heating side heat exchanger (51) and the economizer (7). The fifth one-way valve (56) is connected from the air conditioning floor heating side heat exchanger (51) to the economizer (7).
8. An air source heat pump unit with dual cooling and dual heating heat recovery function according to claim 7, characterized in that, It also includes a heat exchange fan (9), which corresponds to the air conditioning side finned heat exchanger (8).
9. An air source heat pump unit with dual cooling and dual heating heat recovery function according to claim 8, characterized in that, It also includes a gas-liquid separator (10), which is provided between the air-conditioning side four-way valve (6) and the air-conditioning side compressor (1).
10. An air source heat pump unit with dual cooling and dual heating heat recovery function according to claim 9, characterized in that, It also includes filters (30), and there are multiple filters (30), each of which is connected to a corresponding expansion valve.