Heat pump heating unit capable of waste heat recovery

Abstract

The utility model discloses a kind of heat pump heating unit that can carry out waste heat recovery, belong to waste heat recovery field, including base and install on the upper surface of base compressor, condenser, evaporator, waste heat collector, heat supply heat exchanger and waste heat heat exchanger;The heat pump heating unit that can carry out waste heat recovery is through independent heat pump circulation loop, waste heat circulation loop, main machine heating circuit and user heating circuit, constructs whole-process heat utilization system, waste heat collector cooperates with waste heat heat exchanger, reintroduces the originally discarded waste heat into system, provides preheating energy for evaporator, reduces compressor doing work consumption, compared with traditional heat pump unit energy-saving rate significantly improves, main machine heating circuit and user heating circuit separate design, both guarantee condenser core heat exchange efficiency, can also be stabilized to external end by heating water tank Energy supply, while heating water tank is directly connected to external heating end, shorten heat transmission path, reduce heat loss along the way.

Description

Technical Field

[0001] This utility model belongs to the field of waste heat recovery technology, specifically relating to a heat pump heating unit capable of waste heat recovery. Background Technology

[0002] With increasing energy shortages and stringent environmental protection requirements, heat pump technology has been widely used in the heating field due to its advantages such as high efficiency, energy saving, and environmental friendliness. Traditional heat pump heating units mainly rely on ambient air, groundwater, or soil as heat sources. In low-temperature environments, the temperature of the ambient heat source decreases, leading to a significant drop in the heat pump's COP (coefficient of performance) and even insufficient heating capacity. At the same time, industrial production processes generate a large amount of low-grade waste heat (such as industrial wastewater at 30-80℃ and process exhaust gas at 40-120℃), as well as waste heat resources such as building exhaust. This waste heat is usually directly discharged, which not only wastes energy but may also cause thermal pollution to the environment.

[0003] While some existing waste heat recovery devices can recover some waste heat, they have shortcomings. Waste heat recovery is independent of the heat pump heating system, requiring additional heat exchange equipment and transmission pipelines. The system integration is low, making it inconvenient to effectively recover waste heat. Utility Model Content

[0004] The purpose of this utility model is to provide a heat pump heating unit capable of waste heat recovery, in order to solve the problem mentioned in the background art that although some existing waste heat recovery devices can recover some waste heat, they have shortcomings. Waste heat recovery and heat pump heating systems are independent of each other, requiring additional heat exchange equipment and transmission pipelines. The system integration is low, which makes it inconvenient to recover waste heat effectively.

[0005] To achieve the above objectives, this utility model provides the following technical solution: including a base and a compressor, condenser, evaporator, waste heat collector, heating heat exchanger and waste heat exchanger mounted on the upper surface of the base;

[0006] The compressor has its outlet connected to the inlet of the condenser, the outlet of the condenser connected to the inlet of the evaporator via a throttling element, and the outlet of the evaporator connected to the inlet of the compressor via a first annular pipe, forming a heat pump circulation loop.

[0007] The waste heat collector is located in front of the compressor. The waste heat exchanger is located to the left of the waste heat collector. A waste heat circulation pump is installed on the right side of the waste heat collector. The outlet of the waste heat collector is connected to the hot side inlet of the waste heat exchanger via the waste heat circulation pump. The hot side outlet of the waste heat exchanger is connected to the inlet of the waste heat collector via a second annular pipe to form a waste heat circulation loop. The cold side outlet of the waste heat exchanger is connected to the inlet of the evaporator via a connecting pipe. The cold side inlet of the waste heat exchanger is connected to the outlet of the throttling element via a return pipe.

[0008] The heat exchanger is located behind the condenser. The hot side inlet of the heat exchanger is connected to the outlet of the condenser through a connecting pipe. The hot side outlet of the heat exchanger is connected to the inlet of the condenser, forming a main unit heating circuit.

[0009] A heating circulation pump is installed on the right side of the hot water tank. The outlet of the hot water tank is connected to the cold side inlet of the heating heat exchanger via a connecting pipe connected to the heating circulation pump. The cold side outlet of the heating heat exchanger is connected to the external pipe connected to the inlet of the hot water tank via a ring-shaped connecting pipe. The outlet of the hot water tank is also connected to an external heating terminal, forming a user heating circuit.

[0010] By adopting the above scheme, a complete heat utilization system is constructed through independent heat pump circulation loop, waste heat circulation loop, main unit heating loop and user heating loop. The waste heat collector and waste heat exchanger work together to reintroduce the originally discarded waste heat into the system to provide preheating energy for the evaporator, reduce the power consumption of the compressor, and significantly improve the energy efficiency compared with traditional heat pump units. The separate design of the main unit heating loop and user heating loop ensures the core heat exchange efficiency of the condenser and can stably supply energy to the external terminal through the hot water tank. At the same time, the hot water tank is directly connected to the external heating terminal, shortening the heat transmission path, reducing heat loss along the way, and improving the heating stability at the user end.

[0011] It should be noted that, in the above scheme, all electronic devices are electrically connected to an external power supply.

[0012] In a preferred embodiment, the throttling element includes a throttling valve, which is connected to the outlet pipe of the condenser and the inlet pipe of the evaporator. One end of the return pipe is connected to the throttling valve.

[0013] By adopting the above scheme, the throttling element is clearly defined as the throttling valve. The throttling valve can precisely regulate the flow rate and pressure of the refrigerant at the condenser outlet, ensuring that the refrigerant entering the evaporator is in the optimal evaporation state, thereby improving the cooling or heating efficiency of the heat pump cycle. At the same time, the return pipe is directly connected to the throttling valve, allowing the refrigerant on the cold side of the waste heat exchanger to quickly return to the main cycle, reducing refrigerant retention and loss.

[0014] In a preferred embodiment, a waste heat circulation pump is equipped with a waste heat flow regulating valve on the pipe connected to the hot side inlet of the waste heat heat exchanger, a refrigerant temperature sensor is installed on the output pipe of the evaporator, and a solenoid valve is installed on the output pipe of the evaporator.

[0015] By adopting the above scheme, by setting up a waste heat flow regulating valve, the flow rate of the waste heat medium entering the waste heat heat exchanger can be adjusted in real time according to the system requirements, so as to avoid fluctuations in heat exchange efficiency caused by excessive or insufficient waste heat. For example, when the ambient temperature changes, the flow rate can be adjusted to ensure that the evaporator always receives stable preheating, thereby improving the stability of heat pump operation.

[0016] In a preferred embodiment, a waste heat temperature sensor is installed on the upper surface of the waste heat collector, and the probe of the waste heat temperature sensor extends through into the waste heat collector. An electric auxiliary heater is installed inside the hot water tank.

[0017] By adopting the above solution, a waste heat temperature sensor is installed, which is directly inserted into the waste heat collector to obtain the real temperature of the waste heat medium in real time. This provides accurate data support for subsequent waste heat flow adjustment and heat exchange matching, avoiding waste heat waste or underutilization due to temperature monitoring deviations. The electric auxiliary heater can quickly replenish heat under special conditions such as low temperatures in winter or interruption of waste heat supply, ensuring that the temperature of the hot water tank remains stable within the set range. This solves the problem of "low temperature failure" of traditional heat pumps and meets the user's all-weather heating needs.

[0018] In a preferred embodiment, a filter one is installed on the outlet pipe of the waste heat collector, and a filter two is installed on the outlet pipe of the hot water supply tank.

[0019] By adopting the above scheme, filter one and filter two are set up. Filter one can intercept impurities such as pipe corrosion and dust in the medium at the outlet of the waste heat collector, preventing them from entering the waste heat exchanger and blocking the heat exchange channel, thus ensuring stable waste heat exchange efficiency. Filter two can filter scale and impurities at the outlet of the hot water tank, avoiding blockage of the heating heat exchanger or user terminal pipes and reducing equipment failure.

[0020] In a preferred embodiment, a controller is mounted on the upper surface of the base. The controller includes a temperature acquisition unit and a valve control unit. The temperature acquisition unit is electrically connected to a waste heat temperature sensor and a refrigerant temperature sensor, respectively, for acquiring the temperature at each monitoring point. The valve control unit is electrically connected to a frequency converter module that controls the waste heat flow regulating valve, the heating circulation pump, and the compressor, respectively.

[0021] By adopting the above solution, a controller is set up. The controller integrates waste heat and refrigerant temperature data through the temperature acquisition unit, and then the valve control unit links and adjusts the flow valve, circulation pump, and compressor frequency conversion module to achieve a closed loop of "data monitoring-automatic adjustment-precise temperature control". No manual intervention is required, which reduces operating costs.

[0022] In a preferred embodiment, the waste heat collector is made of corrosion-resistant material and has a spiral guide plate inside. The spiral guide plate can extend the residence time of the waste heat medium in the waste heat collector and improve the waste heat collection efficiency. The waste heat exchanger is a plate heat exchanger and its heat exchange plates are made of stainless steel.

[0023] Using the above solution, the waste heat collector is made of corrosion-resistant materials such as stainless steel, which can adapt to various corrosive media scenarios such as industrial waste heat and domestic waste heat, thus expanding the applicability of the equipment. The internal spiral guide plate extends the residence time of the waste heat medium, ensuring that the waste heat is fully released. Compared with the traditional straight-cylinder collector, the waste heat recovery rate is increased by more than %.

[0024] In a preferred embodiment, the electric auxiliary heater is electrically connected to the controller. When the heating temperature sensor detects that the hot water temperature is lower than the set value and the waste heat recovery module cannot meet the heating demand, the controller starts the electric auxiliary heater to supplement the heating heat and ensure the stability of the heating supply.

[0025] Using the above solution, the electric auxiliary heater is linked with the controller, and the water temperature is monitored in real time through the heating temperature sensor. When the waste heat recovery cannot meet the demand, it will start automatically, avoiding heating interruptions caused by delays in manual judgment and ensuring stable temperature at the user end.

[0026] Compared with the prior art, the beneficial effects of this utility model are:

[0027] This heat pump heating unit capable of waste heat recovery constructs a complete heat utilization system through independent heat pump circulation loops, waste heat circulation loops, main unit heating loops, and user heating loops. The waste heat collector and waste heat exchanger work together to reintroduce the originally discarded waste heat into the system, providing preheating energy for the evaporator and reducing compressor power consumption. Compared with traditional heat pump units, the energy saving rate is significantly improved. The separate design of the main unit heating loop and the user heating loop ensures the core heat exchange efficiency of the condenser and can stably supply energy to the external terminal through the hot water tank. At the same time, the hot water tank is directly connected to the external heating terminal, shortening the heat transmission path, reducing heat loss along the way, and improving the heating stability at the user end.

[0028] This heat pump heating unit capable of waste heat recovery uses a throttling valve to precisely regulate the flow and pressure of the refrigerant at the condenser outlet, ensuring that the refrigerant entering the evaporator is in the optimal evaporation state, thereby improving the cooling or heating efficiency of the heat pump cycle. At the same time, the return pipe is directly connected to the throttling valve, allowing the refrigerant on the cold side of the waste heat exchanger to quickly return to the main cycle, reducing refrigerant retention and loss. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the structure of this utility model;

[0030] Figure 2 This is a side view of the base structure of this utility model;

[0031] Figure 3 This is a rear cross-sectional view of the hot water tank of this utility model.

[0032] In the diagram: 1. Base; 2. Compressor; 3. Condenser; 4. Evaporator; 5. Waste heat exchanger; 6. Waste heat collector; 7. Hot water tank; 8. Heating heat exchanger; 9. Waste heat circulation pump; 10. First annular pipe; 11. Second annular pipe; 12. Controller; 13. Output pipe; 14. Filter 1; 15. Waste heat temperature sensor; 16. Refrigerant temperature sensor; 17. Electric auxiliary heater; 18. Connecting pipe 1; 19. Connecting pipe 2; 20. Connecting pipe 3; 21. Throttling valve; 22. Filter 2; 23. Heating circulation pump; 24. Heating temperature sensor; 25. External pipe; 26. Waste heat flow control valve; 27. Connecting pipe 4; 28. Return pipe. Detailed Implementation

[0033] Please see Figure 1-3 This utility model provides a heat pump heating unit capable of waste heat recovery, including a base 1 and a compressor 2, a condenser 3, an evaporator 4, a waste heat collector 6, a heating heat exchanger 8 and a waste heat exchanger 5 installed on the upper surface of the base 1.

[0034] Compressor 2, the outlet of compressor 2 is connected to the inlet of condenser 3, the outlet of condenser 3 is connected to the inlet of evaporator 4 through a throttling element, and the outlet of evaporator 4 is connected to the inlet of compressor 2 through the first annular pipe 10, forming a heat pump circulation loop.

[0035] Waste heat collector 6 is located in front of compressor 2. Waste heat exchanger 5 is located to the left of waste heat collector 6. Waste heat circulation pump 9 is installed on the right side of waste heat collector 6. The outlet of waste heat collector 6 is connected to the hot side inlet of waste heat exchanger 5 through waste heat circulation pump 9. The hot side outlet of waste heat exchanger 5 is connected to the inlet of waste heat collector 6 through second annular pipe 11 to form a waste heat circulation loop. The cold side outlet of waste heat exchanger 5 is connected to the inlet of evaporator 4 through connecting pipe 27. The cold side inlet of waste heat exchanger 5 is connected to the outlet of throttling element through return pipe 28.

[0036] Among them, the heat exchanger 8 is located behind the condenser 3. The hot side inlet of the heat exchanger 8 is connected to the outlet of the condenser 3 through the connecting pipe 20, and the hot side outlet of the heat exchanger 8 is connected to the inlet of the condenser 3 to form the main unit heating circuit.

[0037] A heating circulation pump 23 is installed on the right side of the hot water tank 7. The outlet of the hot water tank 7 is connected to the cold side inlet of the heat exchanger 8 via a connecting pipe 18 connected to the heating circulation pump 23. The cold side outlet of the heat exchanger 8 is connected to the external pipe 25 connected to the inlet of the hot water tank 7 via a ring-shaped connecting pipe 19. The outlet of the hot water tank 7 is also connected to an external heating terminal, forming a user heating loop. Through independent heat pump circulation loops, waste heat circulation loops, main unit heating loops, and user heating loops, a complete heating system is constructed. The process heat utilization system, with waste heat collector 6 and waste heat exchanger 5 working together, reintroduces the originally discarded waste heat into the system to provide preheating energy for evaporator 4, reducing the power consumption of compressor 2. Compared with traditional heat pump units, the energy saving rate is significantly improved. The main unit heating circuit and user heating circuit are designed separately, which not only ensures the core heat exchange efficiency of condenser 3, but also stably supplies energy to the external terminal through hot water tank 7. At the same time, hot water tank 7 is directly connected to the external heating terminal, shortening the heat transmission path, reducing heat loss along the way, and improving the heating stability at the user end.

[0038] The throttling element includes a throttling valve 21, which is connected to the outlet pipe of the condenser 3 and the inlet pipe of the evaporator 4. One end of the return pipe 28 is connected to the throttling valve 21. By setting the throttling valve 21, the throttling element is clearly defined as the throttling valve 21. It can precisely regulate the flow rate and pressure of the refrigerant at the outlet of the condenser 3 to ensure that the refrigerant entering the evaporator 4 is in the best evaporation state, thereby improving the cooling or heating efficiency of the heat pump cycle. At the same time, the return pipe 28 is directly connected to the throttling valve 21, so that the refrigerant on the cold side of the waste heat exchanger 5 can quickly return to the main cycle, reducing refrigerant retention loss.

[0039] A waste heat flow regulating valve 26 is installed on the pipe connecting the waste heat circulation pump 9 to the hot side inlet of the waste heat heat exchanger 5. A refrigerant temperature sensor 16 is installed on the output pipe 13 of the evaporator 4, and a solenoid valve is installed on the output pipe 13 of the evaporator 4. By setting the waste heat flow regulating valve 26, the flow rate of the waste heat medium entering the waste heat heat exchanger 5 can be adjusted in real time according to the system requirements, so as to avoid fluctuations in heat exchange efficiency caused by excessive or insufficient waste heat. For example, when the ambient temperature changes, the flow rate can be adjusted to ensure that the evaporator 4 always receives stable preheating, thereby improving the stability of heat pump operation.

[0040] A waste heat temperature sensor 15 is installed on the upper surface of the waste heat collector 6. The probe of the waste heat temperature sensor 15 extends through into the waste heat collector 6. An electric auxiliary heater 17 is installed in the hot water tank 7. By setting the waste heat temperature sensor 15, which directly penetrates into the waste heat collector 6, the real temperature of the waste heat medium can be obtained in real time. This provides accurate data support for subsequent waste heat flow adjustment and heat exchange matching, avoiding waste heat waste or underutilization due to temperature monitoring deviation. The electric auxiliary heater 17 can quickly replenish heat under special conditions such as low temperature in winter or interruption of waste heat supply, ensuring that the temperature of the hot water tank 7 is stable within the set range. This solves the problem of "low temperature failure" of traditional heat pumps and meets the user's all-weather heating needs.

[0041] A filter 14 is installed on the outlet pipe of the waste heat collector 6, and a filter 22 is installed on the outlet pipe of the hot water tank 7. By setting up filters 14 and 22, filter 14 can intercept impurities such as pipe corrosion and dust in the outlet medium of the waste heat collector 6, preventing them from entering the waste heat exchanger 5 and blocking the heat exchange channel, thus ensuring stable waste heat exchange efficiency. Filter 22 can filter scale and impurities at the outlet of the hot water tank 7, avoiding blockage of the heating heat exchanger 8 or the user terminal pipe, and reducing equipment failure.

[0042] A controller 12 is installed on the upper surface of the base 1. The controller 12 includes a temperature acquisition unit and a valve control unit. The temperature acquisition unit is electrically connected to the waste heat temperature sensor 15 and the refrigerant temperature sensor 16 respectively to collect the temperature at each monitoring point. The valve control unit is electrically connected to the frequency converter module that controls the waste heat flow regulating valve 26, the heating circulation pump 23 and the compressor 2 respectively. By setting up the controller 12, the controller 12 integrates the waste heat and refrigerant temperature data through the temperature acquisition unit, and then the valve control unit links and regulates the flow valve, the circulation pump and the frequency converter module of the compressor 2 to realize a closed loop of "data monitoring-automatic adjustment-precise temperature control" without manual intervention, thus reducing operating costs.

[0043] The waste heat collector 6 is made of corrosion-resistant material and has a spiral guide plate inside. The spiral guide plate can extend the residence time of the waste heat medium in the waste heat collector 6 and improve the waste heat collection efficiency. The waste heat heat exchanger 5 is a plate heat exchanger, and its heat exchange plates are made of stainless steel. The waste heat collector 6 uses corrosion-resistant materials such as stainless steel, which can adapt to various corrosive media scenarios such as industrial waste heat and domestic waste heat, thus expanding the application range of the equipment. The internal spiral guide plate extends the residence time of the waste heat medium and ensures that the waste heat is fully released. Compared with the traditional straight cylinder collector, the waste heat recovery rate is increased by more than %.

[0044] The electric auxiliary heater 17 is electrically connected to the controller 12. When the heating temperature sensor 24 detects that the hot water temperature is lower than the set value and the waste heat recovery module cannot meet the heating demand, the controller 12 starts the electric auxiliary heater 17 to supplement the heating heat and ensure the heating stability. The electric auxiliary heater 17 is linked with the controller 12 and monitors the water temperature in real time through the heating temperature sensor 24. It automatically starts when the waste heat recovery cannot meet the demand, avoiding heating interruption caused by delays in manual judgment and ensuring stable temperature at the user end.

[0045] During operation, the waste heat collector 6 collects external waste heat media (such as industrial wastewater and waste gas waste heat carriers). An internal spiral guide plate extends the media residence time, ensuring sufficient waste heat collection. After the waste heat circulation pump 9 starts, the waste heat media is filtered through filter 14 (to remove impurities) and then transported to the hot side of the waste heat exchanger 5. The waste heat media releases heat on the hot side of the waste heat exchanger 5, reducing the ambient heat that needs to be absorbed in the evaporator 4, indirectly reducing the workload of the compressor 2 and achieving energy saving. After heat exchange, the waste heat media flows back to the waste heat collector 6 through the second annular pipe 11, forming a waste heat circulation loop. The waste heat temperature sensor 15 monitors the temperature of the media inside the waste heat collector 6 in real time, and the refrigerant temperature sensor 16 monitors the refrigerant temperature at the outlet of the evaporator 4. After the data is transmitted to the controller 12, the controller 12 controls the flow rate of the waste heat entering the waste heat exchanger 5 by adjusting the waste heat flow regulating valve 26. The flow rate of the heat medium is increased when the waste heat temperature is high to make full use of the waste heat, and decreased when the waste heat temperature is low to avoid affecting the stability of the heat pump cycle. Part of the medium-temperature heat exchange medium (which has absorbed the heat released by the refrigerant) at the outlet of condenser 3 enters the hot side of the heating heat exchanger 8 through connecting pipe 3 20, and exchanges heat with the circulating water of the user's heating circuit again to further increase the water temperature. After heat exchange, the medium flows back to the inlet of condenser 3 through the pipeline to form the main unit heating circuit, realizing the secondary utilization of heat and temperature increase. The water in the hot water tank 7 is filtered by filter 22 and then transported by the heating circulation pump 23 to the cold side of the heating heat exchanger 8 through connecting pipe 18. After absorbing the heat transferred from the hot side, the temperature rises. The heated hot water flows back to the hot water tank 7 through connecting pipe 2 19, and then directly transported by the hot water tank 7 to the external heating terminal (such as radiators and underfloor heating) to meet the user's heating needs.

Claims

1. A heat pump heating unit capable of waste heat recovery, characterized in that: Includes a base (1) and a compressor (2), condenser (3), evaporator (4), waste heat collector (6), heating heat exchanger (8) and waste heat exchanger (5) mounted on the upper surface of the base (1); The compressor (2) has its outlet connected to the inlet of the condenser (3), the outlet of the condenser (3) is connected to the inlet of the evaporator (4) via a throttling element, and the outlet of the evaporator (4) is connected to the inlet of the compressor (2) via a first annular pipe (11), forming a heat pump circulation loop. Waste heat collector (6) is located in front of compressor (2). Waste heat exchanger (5) is located to the left of waste heat collector (6). Waste heat circulation pump (9) is installed on the right side of waste heat collector (6). The outlet of waste heat collector (6) is connected to the hot side inlet of waste heat exchanger (5) via waste heat circulation pump (9). The hot side outlet of waste heat exchanger (5) is connected to the inlet of waste heat collector (6) via second annular pipe (10) to form waste heat circulation loop. The cold side outlet of waste heat exchanger (5) is connected to the inlet of evaporator (4) via connecting pipe four (27). The cold side inlet of waste heat exchanger (5) is connected to the outlet of throttling element via return pipe (28). The heat exchanger (8) is located behind the condenser (3). The hot side inlet of the heat exchanger (8) is connected to the outlet of the condenser (3) through the connecting pipe three (20). The hot side outlet of the heat exchanger (8) is connected to the inlet of the condenser (3) to form a main unit heating circuit. A heating circulation pump (23) is installed on the right side of the hot water tank (7). The outlet of the hot water tank (7) is connected to the cold side inlet of the heating heat exchanger (8) via a connecting pipe (18) connected to the heating circulation pump (23). The cold side outlet of the heating heat exchanger (8) is connected to the external pipe (25) connected to the inlet of the hot water tank (7) via a ring-shaped connecting pipe (19). The outlet of the hot water tank (7) is also connected to an external heating terminal to form a user heating circuit.

2. The heat pump heating unit capable of waste heat recovery according to claim 1, characterized in that: The throttling element includes a throttling valve (21), which is connected to the outlet pipe of the condenser (3) and the inlet pipe of the evaporator (4). One end of the return pipe (28) is connected to the throttling valve (21).

3. The heat pump heating unit capable of waste heat recovery according to claim 1, characterized in that: The waste heat circulation pump (9) is connected to the hot side inlet of the waste heat heat exchanger (5) by a waste heat flow regulating valve (26), a refrigerant temperature sensor (16) is installed on the output pipe (13) of the evaporator (4), and a solenoid valve is installed on the output pipe (13) of the evaporator (4).

4. The heat pump heating unit capable of waste heat recovery according to claim 1, characterized in that: The waste heat collector (6) is equipped with a waste heat temperature sensor (15) on its upper surface. The probe of the waste heat temperature sensor (15) extends through into the waste heat collector (6). An electric auxiliary heater (17) is installed in the hot water tank (7).

5. The heat pump heating unit capable of waste heat recovery according to claim 1, characterized in that: A filter (14) is installed on the outlet pipe of the waste heat collector (6), and a filter (22) is installed on the outlet pipe of the hot water tank (7).

6. The heat pump heating unit capable of waste heat recovery according to claim 3, characterized in that: A controller (12) is installed on the upper surface of the base (1). The controller (12) includes a temperature acquisition unit and a valve control unit. The temperature acquisition unit is electrically connected to the waste heat temperature sensor (15) and the refrigerant temperature sensor (16) respectively, and is used to collect the temperature of each monitoring point. The valve control unit is electrically connected to the frequency converter module that controls the waste heat flow regulating valve (26), the heating circulation pump (23) and the compressor (2).

7. The heat pump heating unit capable of waste heat recovery according to claim 1, characterized in that: The waste heat collector (6) is made of corrosion-resistant material and has a spiral guide plate inside. The spiral guide plate can extend the residence time of the waste heat medium in the waste heat collector (6) and improve the waste heat collection efficiency. The waste heat exchanger (5) is a plate heat exchanger and its heat exchange plates are made of stainless steel.

8. The heat pump heating unit capable of waste heat recovery according to claim 4, characterized in that: The electric auxiliary heater (17) is electrically connected to the controller (12). When the heating temperature sensor (24) detects that the heating water temperature is lower than the set value and the waste heat recovery module cannot meet the heating demand, the controller (12) starts the electric auxiliary heater (17) to supplement the heating heat and ensure the heating stability.

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