Double-source heat pump unit with three-temperature function

Abstract

The utility model discloses a double-source heat pump unit with a three-temperature function. The double-source heat pump unit comprises an air conditioner side compressor. The heat recovery heat exchanger is communicated with the air outlet end of the air conditioner side compressor; the domestic hot water temperature adjusting system comprises a domestic hot water side heat exchanger; the air conditioner air disc temperature adjusting system comprises an air conditioner air disc side heat exchanger; the air conditioner floor heating temperature adjusting system comprises an air conditioner floor heating side heat exchanger; and a water source condensation system. By arranging the domestic hot water temperature adjusting system, the air conditioner wind disc temperature adjusting system and the air conditioner floor heating temperature adjusting system, output of three temperatures can be achieved, temperature adjustment of domestic hot water, a fan coil and floor heating is met, multi-temperature output is achieved, different use requirements are met, and cost is greatly saved; through an air conditioner wind disc temperature adjusting system and a water source condensation system, double-source adjusting control over the temperature by an air source and a water source is achieved.

Description

Technical Field

[0001] This utility model belongs to the field of air conditioning system technology, and in particular relates to a dual-source heat pump unit with three-temperature functions. Background Technology

[0002] Currently, most air source heat pump units on the market use a single-circuit, single-temperature water output method. When domestic hot water, underfloor heating, and air temperature control are required, different heat pumps are needed for water supply, significantly increasing costs and requiring a large installation space. While heat pumps capable of dual-temperature water output have emerged, such as the variable frequency air source heat pump system disclosed in application number 202023283860.0, which can provide both low-temperature chilled water and high-temperature cooling water (one high temperature and one low temperature), this system cannot meet the requirements of environments where heating is the primary function. Utility Model Content

[0003] The purpose of this utility model is to provide a dual-source heat pump unit with three-temperature function that can solve the above-mentioned problems.

[0004] According to one aspect of this utility model, a dual-source heat pump unit with three-temperature functions 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 domestic hot water temperature regulation system is connected to the air conditioning side compressor through a heat recovery heat exchanger. The domestic hot water temperature regulation system includes a domestic hot water side heat exchanger, which is equipped with a domestic hot water inlet and a heat recovery heat exchanger, which is equipped with a domestic hot water outlet.

[0008] 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 an air conditioning fan coil side heat exchanger, which is equipped with an air conditioning fan coil side water outlet and an air conditioning fan coil side water return.

[0009] 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 an air conditioning floor heating side heat exchanger, which includes an air conditioning floor heating side outlet and an air conditioning floor heating side return outlet.

[0010] The water source condensing system is connected to the air conditioning compressor via a heat recovery heat exchanger. The water source condensing system includes a water source condenser, which is equipped with a water source condenser inlet and a water source condenser outlet.

[0011] In some implementations, the water source condensation system is as follows: the 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, and the E port of the air conditioning side four-way valve is sequentially connected to the air conditioning side finned heat exchanger, the water source condenser, the second check valve, the air conditioning fan coil side heat exchanger, the C port of the air conditioning side four-way valve, and the air conditioning side compressor suction end.

[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 cooling expansion valve, a first one-way valve, a liquid injection enthalpy-increasing expansion valve, and an air conditioning heating expansion valve. The air conditioning fan coil side cooling 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 open 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 embodiments, a dual-source heat pump unit with three-temperature functions is characterized by further including a heat exchange fan, which corresponds to the air conditioner-side finned heat exchanger.

[0017] In some implementations, the domestic hot water temperature regulation system is configured such that the outlet of the air conditioning compressor is connected to a heat recovery heat exchanger, and the second outlet of the heat recovery heat exchanger is connected to a domestic hot water heat exchanger.

[0018] In some embodiments, the domestic hot water temperature regulation system further includes a temperature supplementation module, which includes a domestic hot water side compressor, a domestic hot water side four-way valve, a domestic hot water side finned heat exchanger, and a domestic hot water side expansion valve. The domestic hot water side compressor is connected to the domestic hot water side four-way valve, and the C port of the domestic hot water side four-way valve is sequentially connected to the domestic hot water side heat exchanger, the domestic hot water side expansion valve, the domestic hot water side finned heat exchanger, the E port of the domestic hot water side four-way valve, and the suction end of the domestic hot water side compressor.

[0019] In some embodiments, the dual-source heat pump unit with three-temperature function also includes a gas-liquid separator on the domestic hot water side and a gas-liquid separator on the air conditioning side. The air conditioning side 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, and the domestic hot water side gas-liquid separator is provided between the four-way valve on the domestic hot water side and the suction end of the domestic hot water side compressor.

[0020] The beneficial effects of this utility model of a dual-source heat pump unit with three-temperature functions are:

[0021] 1. By incorporating a domestic hot water temperature control system, an air conditioning fan coil temperature control system, and an air conditioning underfloor heating temperature control system, three temperature outputs can be achieved to meet the temperature regulation needs of domestic hot water, fan coil units, and underfloor heating, thus realizing multiple temperature outputs to meet different usage requirements and greatly saving costs;

[0022] 2. 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.

[0023] 3. Through the various structures of the air conditioning 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.

[0024] 4. The domestic hot water temperature regulation system heats the domestic hot water by exchanging heat through a heat recovery heat exchanger during use.

[0025] 5. By incorporating a temperature supplement module, the domestic hot water can be further heated through the domestic hot water side compressor, domestic hot water side finned heat exchanger, and domestic hot water side heat exchanger. When the heating temperature of the domestic hot water by the heat recovery heat exchanger cannot meet the temperature requirements, the temperature supplement module can further heat the domestic hot water to meet the corresponding operating temperature requirements.

[0026] 6. With the water source condensation system, heat dissipation can be achieved by water source. When the outside temperature is higher than the system set temperature, the system switches to water source condensation system; otherwise, the air source works, realizing dual-source operation to meet the working requirements under different temperature conditions.

[0027] 7. The entire unit can simultaneously achieve three 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

[0028] Figure 1 This is a schematic diagram of the principle of a dual-source heat pump unit with three-temperature function according to this utility model. Detailed Implementation

[0029] The present invention will now be described in further detail with reference to the accompanying drawings.

[0030] Reference Figure 1 A dual-source heat pump unit with three temperature functions includes:

[0031] Air conditioning compressor 1;

[0032] The heat recovery heat exchanger 2 is connected to the outlet end of the air conditioning compressor 1;

[0033] The domestic hot water temperature regulation system 3 is connected to the air conditioning side compressor 1 through the heat recovery heat exchanger 2. The domestic hot water temperature regulation system 3 includes a domestic hot water side heat exchanger 31, a domestic hot water inlet 32 ​​on the domestic hot water side heat exchanger 31, and a domestic hot water outlet 33 on the heat recovery heat exchanger 2.

[0034] 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 an air conditioning fan coil side heat exchanger 41, which is provided with an air conditioning fan coil side water outlet 42 and an air conditioning fan coil side water return outlet 43.

[0035] 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 an air conditioning floor heating side heat exchanger 51, which includes an air conditioning floor heating side water outlet 52 and an air conditioning floor heating side water return 53.

[0036] The water source condensing system 9 is connected to the air conditioning side compressor 1 through the heat recovery heat exchanger 2. The water source condensing system 9 includes a water source condenser 91, which is provided with a water source condenser inlet 92 and a water source condenser outlet 93.

[0037] The water source condensation system is as follows: the outlet of the air conditioner 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 conditioner four-way valve 6, and the E port of the air conditioner four-way valve 6 is connected in sequence to the air conditioner finned heat exchanger 8, the water source condenser 91, the second one-way valve 48, the air conditioner fan coil heat exchanger 41, the C port of the air conditioner four-way valve 6, and the suction end of the air conditioner compressor 1.

[0038] The water source condensing system in this utility model is used in cooling mode. That is, when the outside temperature is higher than the temperature set by the air conditioner, the system switches to the operation of the water source condensing system 9. Specifically, the water source condenser inlet 92 is opened, and the refrigerant of the air conditioner side compressor 1 undergoes preliminary heat exchange through the heat recovery heat exchanger 2, and then flows to the water source condenser 91 through the E port of the air conditioner side four-way valve 6. The condensate is used to achieve cooling, and the cooled low-temperature gas is dissipated to the outside environment through the air conditioner side finned heat exchanger 8 to achieve cooling.

[0039] When the outside temperature is lower than the temperature set by the air conditioner, the water source condensation system 9 is turned off, and the system switches to the air conditioner fan coil temperature regulation system 4 to regulate the temperature through the air source.

[0040] 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. This dual-source heat pump unit with three temperature functions exchanges heat with the refrigerant output from the air conditioning compressor 1 through the heat recovery heat exchanger 2 to heat domestic hot water. The heated water is then output through the domestic hot water outlet 33. The air conditioning fan coil temperature control system 4 exchanges heat through the air conditioning fan coil side heat exchanger 41, allowing cooled or heated water to be output through the air conditioning fan coil side outlet 42, thus achieving cooling or heating of the air conditioning fan coil unit and 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, obtaining cooled or heated water which is output through the air conditioning underfloor heating side outlet 52, conveniently providing cooled or heated water for underfloor heating, meeting the cooling or heating effects of underfloor heating and satisfying temperature control requirements in different seasons.

[0041] 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.

[0042] 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, and an air conditioning heating expansion valve 47. 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.

[0043] When in use, the air conditioning fan coil temperature control system 4 can cool or heat the fan coil unit, that is, it can output low-temperature water or heated water through the water outlet 42 on the side of the air conditioning fan coil unit, as detailed below:

[0044] 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 undergoes preliminary heat exchange in the heat recovery heat exchanger 2, and then flows through port C of the air conditioning four-way valve 6 to the air conditioning fan coil side heat exchanger 41. At this time, the low-temperature water flowing into the air conditioning fan coil side heat exchanger 41 through the air conditioning fan coil side return water port 43 undergoes heat exchange at the air conditioning fan coil side heat exchanger 41, causing the temperature to rise. This raises the temperature of the water flowing out of the air conditioning fan coil side outlet 42, thus heating the air conditioning fan coil unit. After the refrigerant flows out of the air conditioning fan coil side heat exchanger 41, it 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 side finned heat exchanger 8 for heat exchange. At this time, the second one-way valve 48 is not open. After heat exchange at the finned heat exchanger 8 on the air conditioning side, the refrigerant flows in through port E of the four-way valve 6 on the air conditioning side and finally flows back to the compressor 1 on the air conditioning side. This cycle is repeated to complete the heating of the fan coil unit.

[0045] 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 side compressor 1 undergoes preliminary heat exchange in the heat recovery heat exchanger 2, and then is transported through port E of the air conditioning side four-way valve 6 to the air conditioning side finned heat exchanger 8 for heat exchange. Subsequently, it is transported through the second one-way valve 48 to the air conditioning fan coil side cooling expansion valve 44, and then to the air conditioning fan coil side heat exchanger 41 for heat exchange. This allows the high-temperature water flowing in to be cooled after heat exchange, resulting in cooled water flowing out, thus cooling the air conditioning fan coil unit. After heat exchange in the air conditioning fan coil side heat exchanger 41, the refrigerant flows in through port C of the air conditioning side four-way valve 6 and finally returns to the air conditioning side compressor 1, achieving cooling of the fan coil unit.

[0046] 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.

[0047] 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.

[0048] 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.

[0049] In use, this utility model can cool or heat the underfloor heating system. Specifically, low-temperature water or heated water can be output through the water outlet 52 on the underfloor heating side of the air conditioner. The specific cooling or heating process is as follows:

[0050] 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 undergoes preliminary heat exchange in the heat recovery heat exchanger 2, and then flows through the C port of the air conditioning four-way valve 6 and the fourth one-way valve 55 to the air conditioning and floor heating heat exchanger 51. At this time, the low-temperature water flowing in through the air conditioning and floor heating return port 53 undergoes heat exchange in the air conditioning and floor heating heat exchanger 51, causing the water temperature to rise, which in turn raises the water temperature flowing out through the air conditioning and floor heating outlet 52, thus facilitating the heating effect of the floor heating system. After the refrigerant flows out of the air conditioning and floor heating heat exchanger 51, it passes through the fifth one-way valve 56, 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. After heat exchange at the finned heat exchanger 8 on the air conditioner side, the refrigerant flows in through port E of the four-way valve 6 on the air conditioner side and finally flows back to the compressor 1 on the air conditioner side. This cycle is repeated to complete the heating of the floor heating system.

[0051] 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.

[0052] The dual-source heat pump unit with three-temperature function of this utility model also includes a heat exchange fan 60, which corresponds to the air conditioner-side finned heat exchanger 8. Therefore, in use, the heat exchange fan 60 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.

[0053] The domestic hot water temperature regulation system 3 is as follows: the outlet of the air conditioning side compressor 1 is connected to the heat recovery heat exchanger 2, and the second outlet of the heat recovery heat exchanger 2 is connected to the domestic hot water side heat exchanger 31.

[0054] The domestic hot water temperature regulation system 3 also includes a temperature supplement module 34, which includes a domestic hot water side compressor 35, a domestic hot water side four-way valve 36, a domestic hot water side finned heat exchanger 37, and a domestic hot water side expansion valve 38. The domestic hot water side compressor 35 is connected to the domestic hot water side four-way valve 36. The C port of the domestic hot water side four-way valve 36 is sequentially connected to the domestic hot water side heat exchanger 31, the domestic hot water side expansion valve 38, the domestic hot water side finned heat exchanger 37, the E port of the domestic hot water side four-way valve 36, and the suction end of the domestic hot water side compressor 35.

[0055] The heating process of the domestic hot water temperature regulation system 3 is as follows: the water with a lower temperature enters the domestic hot water side heat exchanger 31 through the domestic hot water inlet 32, and is then transported to the heat recovery heat exchanger 2; when the air conditioning side compressor 1 is working, the refrigerant undergoes heat exchange through the heat recovery heat exchanger 2 to heat the water flowing through it, and heated domestic hot water can be obtained, which is then output through the domestic hot water outlet 33 on the heat recovery heat exchanger 2.

[0056] When the heat exchange at heat recovery heat exchanger 2 is insufficient to heat the domestic hot water to the required temperature, the domestic hot water side compressor 35 is activated. The refrigerant output from the domestic hot water side compressor 35 is transported to the domestic hot water side heat exchanger 31 via port C of the domestic hot water side four-way valve 36. Heat exchange occurs in the domestic hot water side heat exchanger 31, causing the low-temperature water input from the domestic hot water side to heat up. The heated water is then transported back to heat recovery heat exchanger 2 and output again, thus heating the domestic hot water. After passing through the domestic hot water side heat exchanger 31, the refrigerant is transported to the domestic hot water side finned heat exchanger 37 via the domestic hot water side expansion valve 38, then flows back via port E of the domestic hot water side four-way valve 36, and finally returns to the domestic hot water side compressor 35 via the domestic hot water side four-way valve 36, thus heating the domestic hot water.

[0057] This utility model's dual-source heat pump unit with three-temperature functions also includes a domestic hot water side gas-liquid separator 10 and an air conditioning side gas-liquid separator 20. The air conditioning side gas-liquid separator 20 is located between the air conditioning side four-way valve 6 and the suction end of the air conditioning side compressor 1, and the domestic hot water side gas-liquid separator 10 is located between the domestic hot water side four-way valve 36 and the suction end of the domestic hot water side compressor 35. Therefore, by providing the domestic hot water side gas-liquid separator 10 and the air conditioning side gas-liquid separator 20, gas-liquid separation can be performed on the refrigerant that ultimately flows back to the domestic hot water side compressor 35 and the air conditioning side compressor 1, ensuring the normal operation of each compressor.

[0058] A dual-source heat pump unit with three-temperature functions 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.

[0059] 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. A dual-source heat pump unit with three-temperature 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 domestic hot water temperature regulation system (3) is connected to the air conditioning side compressor (1) through the heat recovery heat exchanger (2). The domestic hot water temperature regulation system (3) includes a domestic hot water side heat exchanger (31), a domestic hot water inlet (32) is provided on the domestic hot water side heat exchanger (31), and a domestic hot water outlet (33) is provided on the heat recovery heat exchanger (2). 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 an air conditioning fan coil side heat exchanger (41). The air conditioning fan coil side heat exchanger (41) is provided with an air conditioning fan coil side water outlet (42) and an air conditioning fan coil side water return outlet (43). 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 an air conditioning floor heating side heat exchanger (51), which includes an air conditioning floor heating side outlet (52) and an air conditioning floor heating side return outlet (53). The water source condensing system (9) is connected to the air conditioning side compressor (1) through the heat recovery heat exchanger (2). The water source condensing system (9) includes a water source condenser (91), which is provided with a water source condenser inlet (92) and a water source condenser outlet (93).

2. A dual-source heat pump unit with three-temperature function according to claim 1, characterized in that, The water source condensation system is as follows: the outlet of the air conditioner 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 conditioner four-way valve (6), and the E port of the air conditioner four-way valve (6) is connected in sequence to the air conditioner finned heat exchanger (8), the water source condenser (91), the second check valve (48), the air conditioner fan coil heat exchanger (41), the C port of the air conditioner four-way valve (6), and the air intake of the air conditioner compressor (1).

3. A dual-source heat pump unit with three-temperature function according to claim 2, 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).

4. A dual-source heat pump unit with three-temperature function according to claim 3, 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), and an air conditioning heating expansion valve (47). 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).

5. A dual-source heat pump unit with three-temperature function according to claim 4, 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).

6. A dual-source heat pump unit with three-temperature function according to claim 5, 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).

7. A dual-source heat pump unit with three-temperature function according to any one of claims 2 to 6, characterized in that, It also includes a heat exchange fan (60), which corresponds to the air conditioning side finned heat exchanger (8).

8. A dual-source heat pump unit with three-temperature function according to claim 7, characterized in that, The domestic hot water temperature regulation system (3) is as follows: the outlet of the air conditioner side compressor (1) is connected to the heat recovery heat exchanger (2), and the second outlet of the heat recovery heat exchanger (2) is connected to the domestic hot water side heat exchanger (31).

9. A dual-source heat pump unit with three-temperature function according to claim 8, characterized in that, The domestic hot water temperature regulation system (3) also includes a temperature supplement module (34), which includes a domestic hot water side compressor (35), a domestic hot water side four-way valve (36), a domestic hot water side finned heat exchanger (37), and a domestic hot water side expansion valve (38). The domestic hot water side compressor (35) is connected to the domestic hot water side four-way valve (36). The C port of the domestic hot water side four-way valve (36) is sequentially connected to the domestic hot water side heat exchanger (31), the domestic hot water side expansion valve (38), the domestic hot water side finned heat exchanger (37), the E port of the domestic hot water side four-way valve (36), and the suction end of the domestic hot water side compressor (35).

10. A dual-source heat pump unit with three-temperature function according to claim 9, characterized in that, It also includes a domestic hot water side gas-liquid separator (10) and an air conditioning side gas-liquid separator (20). The air conditioning side four-way valve (6) is provided with an air conditioning side gas-liquid separator (20) between the air conditioning side four-way valve (6) and the air conditioning side compressor (1). The domestic hot water side four-way valve (36) is provided with a domestic hot water side gas-liquid separator (10) between the air conditioning side compressor (35).

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