A heat pump unit with energy recovery

Abstract

This invention discloses a heat pump unit with energy recovery, belonging to the field of heat pump technology. It includes a casing, inside which are arranged a heat circulation mechanism, a fan, a condenser, and a waste heat recovery tank. A circulation conveying mechanism and a drive mechanism are arranged on one side of the waste heat recovery tank. The circulation conveying mechanism includes a compressor and a piston plate. The drive mechanism includes a drive motor, a drive shaft, a guide rail, and a rotating shaft. This invention significantly improves energy utilization efficiency by integrating the heat circulation mechanism, the waste heat recovery tank, and the circulation conveying mechanism. During operation, the compressor compresses the low-temperature, low-pressure gaseous refrigerant into a high-temperature, high-pressure gas. The condenser transfers heat to the water in the condenser. Simultaneously, the waste heat recovery tank further recovers residual heat from the refrigerant, achieving cascaded energy utilization. The fan enhances air circulation and improves heat exchange efficiency, while the temperature sensor and controller dynamically adjust system operating parameters to ensure stable hot water temperature.

Description

Technical Field

[0001] This invention relates to the field of heat pump technology, and in particular to a heat pump unit with energy recovery. Background Technology

[0002] Traditional heat pump units have significant limitations in energy recovery. The heat released by the condenser is usually directly discharged into the environment, resulting in a large waste of low-grade heat energy. Although some improved heat pumps enhance energy efficiency by adding waste heat recovery devices, existing technologies often lack intelligent control mechanisms and cannot dynamically adjust the intensity of waste heat recovery according to actual needs. For example, when the hot water temperature at the user end is insufficient, the system can only compensate by increasing the compressor power, which not only increases energy consumption but may also affect waste heat recovery efficiency due to mismatched water flow rates. In addition, mechanical waste heat recovery devices (such as fixed-speed water pumps) are difficult to adapt to varying operating conditions, leading to insufficient energy recovery or system overload. Therefore, we propose a heat pump unit with energy recovery to solve this problem. Summary of the Invention

[0003] The purpose of this invention is to provide a heat pump unit with energy recovery to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A heat pump unit with energy recovery includes: a casing, wherein a heat circulation mechanism, a fan, a condenser and a waste heat recovery box are arranged inside the casing, and a circulation conveying mechanism and a drive mechanism are arranged on one side of the waste heat recovery box;

[0006] The circulating conveying mechanism includes a compression box and a piston plate. The piston plate is slidably connected inside the compression box, and a connecting rod is fixedly connected to the bottom of the piston plate.

[0007] The drive mechanism includes a drive motor, a drive shaft, a guide rail, and a rotating shaft. The guide rail is fixedly connected to the bottom end of the connecting rod. A transmission mechanism is provided on the outside of the drive shaft. The transmission mechanism includes a rotating frame, a cylinder, and a connecting cylinder. The rotating frame is fixedly sleeved on the outside of the drive shaft. The connecting cylinder is rotatably sleeved on the outside of the cylinder. Vertical plates are fixedly connected to the top and bottom of the connecting cylinder. A pressure sensor is fixedly connected to one side of the vertical plate. The other end of the pressure sensor is fixedly connected to the side wall of the housing.

[0008] Preferably, a crossbar is fixedly connected to the side wall of the housing, the vertical plate is slidably sleeved on the outside of the crossbar, and a slide rail is fixedly connected to the outside of the cylinder. A sliding seat is slidably sleeved on the outside of the slide rail. Multiple inclined rails are fixedly connected to one side of the rotating frame, and the sliding seat is slidably sleeved on the outside of the corresponding inclined rail.

[0009] Preferably, the heat circulation mechanism includes a compressor, a condenser, a waste heat recovery pipe, a liquid storage tank, an expansion valve, and an evaporator. The compressor outlet and inlet are respectively connected to one end of the condenser and one end of the evaporator. The other end of the evaporator is connected to the expansion valve. The other end of the expansion valve is connected to one side of the liquid storage tank. The other side of the liquid storage tank is connected to the bottom end of the waste heat recovery pipe. The top end of the waste heat recovery pipe is connected to the other end of the condenser.

[0010] Preferably, the fan includes a fan casing, fan blades, and a motor. Through holes are provided on both the front and rear sides of the housing. The fan casing is fixedly installed in the through holes, and the motor is fixedly installed in the fan casing. The output end of the motor is fixedly connected to the fan blades. A partition is fixedly installed inside the housing.

[0011] Preferably, the condenser box is fixedly installed inside the casing, and the condenser is fixedly installed inside the condenser box. A cold water pipe and a hot water pipe are connected to one side of the condenser box. A first temperature sensor is installed inside the hot water pipe. A first water pump is fixedly installed on one side of the casing, and the other end of the cold water pipe is connected to the outlet of the first water pump.

[0012] Preferably, the waste heat recovery box is fixedly installed inside the housing, the waste heat recovery pipe is fixedly installed inside the waste heat recovery box, and one side of the waste heat recovery box is connected to a recovery inlet pipe and a recovery outlet pipe. A second water pump is fixedly installed on the front side of the housing, the other end of the recovery inlet pipe is connected to the outlet of the second water pump, and a second temperature sensor is installed inside the recovery outlet pipe.

[0013] Preferably, the bottom end of the connecting rod is fixedly connected to the guide rail. One side of the compression box is connected to a first outlet pipe and a second outlet pipe. A first one-way valve is installed in the first outlet pipe, and a second one-way valve is installed in the second outlet pipe. The other ends of the first outlet pipe and the second outlet pipe are connected to the same water outlet pipe. The other side of the compression box is connected to a first inlet pipe and a second inlet pipe. The first inlet pipe and the second inlet pipe are connected to the same water inlet pipe. The top end of the water inlet pipe is connected to the recovery outlet pipe. A third one-way valve is installed in the first inlet pipe, and a fourth one-way valve is installed in the second inlet pipe.

[0014] Preferably, the drive shaft and the rotating shaft are respectively fixedly connected to a first connecting arm and a second connecting arm at their close ends, and the other ends of the first connecting arm and the second connecting arm are fixedly connected to the same connecting post. A connecting plate is rotatably sleeved on the outer side of the connecting post, and a sliding plate is fixedly connected to the top of the connecting plate. The sliding plate is slidably sleeved on the outer side of the guide rail. The other end of the drive shaft is fixedly connected to the output shaft of the drive motor. The drive motor is fixedly installed on the outer side of the housing, and the other end of the rotating shaft is rotatably connected to the outer side of the waste heat recovery box.

[0015] Preferably, dustproof nets are fixedly installed on both the front and rear sides of the housing, and a controller is fixedly installed on the top inner wall of the housing.

[0016] The beneficial effects of this invention are as follows:

[0017] 1. In this invention, a heat pump unit with energy recovery is described. By starting a first water pump, a second water pump, a compressor, and a fan, the first water pump introduces cold water into the condenser through a cold water pipe. The compressor draws in low-temperature, low-pressure gaseous refrigerant and compresses it into high-temperature, high-pressure gas using electrical energy, thus completing energy input and heating. The high-temperature refrigerant in the condenser releases sensible heat to the water in the condenser to heat it, while the refrigerant condenses into a high-pressure liquid. The liquid refrigerant is then introduced into a waste heat recovery pipe. The second water pump introduces cold water into the waste heat recovery tank to further recover the waste heat of the refrigerant. The liquid tank stores the liquid refrigerant, balancing system flow fluctuations. The expansion valve reduces pressure, turning the liquid refrigerant into a partially liquid and partially gaseous state. The evaporator absorbs heat from the air, and the refrigerant completely evaporates into a low-temperature, low-pressure gas, which re-enters the compressor to complete the cycle. After the fan starts, the motor drives the fan blades to rotate, increasing the airflow speed and thus increasing the heat exchange speed.

[0018] 2. In the present invention, the heat pump unit with energy recovery is described above. The heated water in the condenser is discharged through the hot water rod. The first temperature sensor monitors the water temperature in the hot water pipe. When the required temperature is not reached, the controller controls the power of the compressor and motor to increase, and controls the power of the first water pump to decrease, thereby increasing the heating speed of the water in the condenser and reducing the water flow rate to ensure that the hot water temperature in the hot water pipe reaches the required temperature.

[0019] 3. In this invention, a heat pump unit with energy recovery monitors the water temperature in the recovery outlet pipe using a second temperature sensor. When the temperature rises, the controller increases the output speed of the drive motor, thereby increasing the rotation speed of the drive shaft. The drive motor drives the connecting column to move in a circular motion via the first connecting arm. The connecting column, in cooperation with the connecting plate, sliding seat, and slide rail, drives the piston plate to move up and down reciprocally. This causes the first, second, third, and fourth one-way valves to all be in the direction of left to right, allowing the water in the recovery outlet pipe to enter the inlet pipe, then through the first and second inlet pipes into the compression tank, then through the first and second outlet pipes into the outlet pipe, and finally into the waste heat recovery tank. The water is then heated again through the waste heat recovery pipe, improving the heating effect.

[0020] 4. In this invention, a heat pump unit with energy recovery is described. The drive shaft drives the rotating frame to rotate, and the inclined rail drives the slide plate and guide rail to perform circular motion. Under the action of centrifugal force, the slide plate tends to move outward and applies leftward pressure to the guide rail, cylinder, connecting cylinder and vertical plate. The pressure is monitored by a pressure sensor. When the speed of the drive shaft increases, the pressure sensed by the pressure sensor increases. The controller controls the power of the second water pump to increase according to the pressure increase sensed by the pressure sensor, thereby increasing the water inlet speed and the water flow speed in the waste heat recovery tank, thereby improving the waste heat recovery effect of the refrigerant.

[0021] 5. The heat pump unit with energy recovery described in this invention significantly improves energy utilization efficiency by integrating a heat circulation mechanism, a waste heat recovery tank, and a circulation conveying mechanism. During operation, the compressor compresses the low-temperature, low-pressure gaseous refrigerant into a high-temperature, high-pressure gas. The condenser transfers heat to the water in the condenser tank, while the waste heat recovery tank further recovers residual heat from the refrigerant, achieving cascaded energy utilization. The fan enhances air circulation and improves heat exchange efficiency, while the temperature sensor and controller dynamically adjust system operating parameters to ensure stable hot water temperature. Furthermore, the drive mechanism and circulation conveying mechanism work together to automatically adjust the water flow speed and compression frequency according to water temperature changes, optimizing the waste heat recovery effect. This design not only improves the overall energy efficiency of the heat pump unit but also reduces energy waste. It is suitable for various scenarios such as residential heating and industrial processes, and has advantages such as energy saving, environmental protection, stable operation, and high degree of automation. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall three-dimensional structure of a heat pump unit with energy recovery proposed in this invention;

[0023] Figure 2 This is a partial cross-sectional view of a heat pump unit with energy recovery proposed in this invention.

[0024] Figure 3 This is a schematic cross-sectional view of the overall structure of a heat pump unit with energy recovery proposed in this invention;

[0025] Figure 4 for Figure 3 A magnified view of part A in the middle;

[0026] Figure 5 for Figure 3 A magnified view of part B in the middle section;

[0027] Figure 6 This is a schematic diagram of the internal three-dimensional structure of a heat pump unit with energy recovery proposed in this invention;

[0028] Figure 7 This is a three-dimensional structural diagram of the thermal cycling mechanism proposed in this invention;

[0029] Figure 8 This is a three-dimensional structural schematic diagram of the transmission mechanism proposed in this invention;

[0030] Figure 9 This is a three-dimensional structural diagram of the driving mechanism proposed in this invention;

[0031] Figure 10 This is a three-dimensional structural diagram of the circulating conveying mechanism proposed in this invention.

[0032] In the diagram: 1. Housing; 101. Dustproof net; 102. Partition plate; 2. Heat circulation mechanism; 201. Compressor; 202. Condenser; 203. Waste heat recovery pipe; 204. Liquid storage tank; 205. Expansion valve; 206. Evaporator; 3. Condenser box; 301. Cold water pipe; 302. First water pump; 303. Hot water pipe; 304. First temperature sensor; 4. Waste heat recovery box; 401. Recovery inlet pipe; 402. Second water pump; 403. Recovery outlet pipe; 404. Second temperature sensor; 5. Air duct; 501. Motor; 502. Fan blade; 6. Conveying mechanism; 601. Compression box; 602. First outlet pipe; 603. First one-way valve; 604. Second outlet pipe; 605. 606. Two check valves; 607. Outlet pipe; 608. Piston plate; 609. First inlet pipe; 610. Third check valve; 611. Second inlet pipe; 612. Fourth check valve; 613. Inlet pipe; 614. Connecting rod; 7. Drive mechanism; 701. Drive motor; 702. Drive shaft; 703. First connecting arm; 704. Connecting column; 705. Second connecting arm; 706. Rotating shaft; 707. Connecting plate; 708. Sliding seat; 709. Guide rail; 8. Transmission mechanism; 801. Rotating frame; 802. Inclined rail; 803. Slide plate; 804. Slide rail; 805. Cylinder; 806. Connecting cylinder; 807. Vertical plate; 808. Horizontal bar; 809. Pressure sensor; 9. Controller. Detailed Implementation

[0033] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0034] Reference Figures 1-10 A heat pump unit with energy recovery includes: a housing 1, inside which a heat circulation mechanism 2, a fan, a condenser box 3 and a waste heat recovery box 4 are arranged, and on one side of the waste heat recovery box 4 a circulation conveying mechanism 6 and a drive mechanism 7 are arranged.

[0035] The circulating conveying mechanism 6 includes a compression box 601 and a piston plate 607. The piston plate 607 is slidably connected inside the compression box 601, and a connecting rod 613 is fixedly connected to the bottom of the piston plate 607.

[0036] The drive mechanism 7 includes a drive motor 701, a drive shaft 702, a guide rail 709, and a rotating shaft 706. The guide rail 709 is fixedly connected to the bottom end of the connecting rod 613. A transmission mechanism 8 is provided on the outside of the drive shaft 702. The transmission mechanism 8 includes a rotating frame 801, a cylinder 805, and a connecting cylinder 806. The rotating frame 801 is fixedly sleeved on the outside of the drive shaft 702. The connecting cylinder 806 is rotatably sleeved on the outside of the cylinder 805. Vertical plates 807 are fixedly connected to the top and bottom of the connecting cylinder 806. A pressure sensor 809 is fixedly connected to one side of the vertical plate 807. The other end of the pressure sensor 809 is fixedly connected to the side wall of the housing 1.

[0037] In this embodiment, a crossbar 808 is fixedly connected to the side wall of the housing 1, a vertical plate 807 is slidably sleeved on the outside of the crossbar 808, and a slide rail 804 is fixedly connected to the outside of the cylinder 805. A sliding seat 708 is slidably sleeved on the outside of the slide rail 804. A plurality of inclined rails 802 are fixedly connected to one side of the rotating frame 801, and the sliding seat 708 is slidably sleeved on the outside of the corresponding inclined rail 802.

[0038] In this embodiment, the heat circulation mechanism 2 includes a compressor 201, a condenser 202, a waste heat recovery pipe 203, a liquid storage tank 204, an expansion valve 205, and an evaporator 206. The outlet and inlet of the compressor 201 are respectively connected to one end of the condenser 202 and one end of the evaporator 206. The other end of the evaporator 206 is connected to the expansion valve 205. The other end of the expansion valve 205 is connected to one side of the liquid storage tank 204. The other side of the liquid storage tank 204 is connected to the bottom end of the waste heat recovery pipe 203. The top end of the waste heat recovery pipe 203 is connected to the other end of the condenser 202.

[0039] In this embodiment, the fan includes a duct 5, a fan blade 502, and a motor 501. The front and rear sides of the housing 1 are provided with through holes. The duct 5 is fixedly installed in the through holes, and the motor 501 is fixedly installed in the duct 5. The output end of the motor 501 is fixedly connected to the fan blade 502. A partition 102 is fixedly installed inside the housing 1.

[0040] In this embodiment, the condenser box 3 is fixedly installed inside the casing 1, and the condenser 202 is fixedly installed inside the condenser box 3. A cold water pipe 301 and a hot water pipe 303 are connected to one side of the condenser box 3. A first temperature sensor 304 is installed inside the hot water pipe 303. A first water pump 302 is fixedly installed on one side of the casing 1. The other end of the cold water pipe 301 is connected to the outlet of the first water pump 302.

[0041] In this embodiment, the waste heat recovery box 4 is fixedly installed inside the casing 1, the waste heat recovery pipe 203 is fixedly installed inside the waste heat recovery box 4, and one side of the waste heat recovery box 4 is connected to the recovery inlet pipe 401 and the recovery outlet pipe 403. The second water pump 402 is fixedly installed on the front side of the casing 1, the other end of the recovery inlet pipe 401 is connected to the outlet of the second water pump 402, and a second temperature sensor 404 is provided inside the recovery outlet pipe 403.

[0042] In this embodiment, the bottom end of the connecting rod 613 is fixedly connected to the guide rail 709. One side of the compression box 601 is connected to the first outlet pipe 602 and the second outlet pipe 604. The first outlet pipe 602 is provided with a first one-way valve 603, and the second outlet pipe 604 is provided with a second one-way valve 605. The other ends of the first outlet pipe 602 and the second outlet pipe 604 are connected to the same water outlet pipe 606. The other side of the compression box 601 is connected to the first inlet pipe 608 and the second inlet pipe 610. The first inlet pipe 608 and the second inlet pipe 610 are connected to the same water inlet pipe 612. The top end of the water inlet pipe 612 is connected to the recovery outlet pipe 403. The first inlet pipe 608 is provided with a third one-way valve 609, and the second inlet pipe 610 is provided with a fourth one-way valve 611.

[0043] In this embodiment, the first connecting arm 703 and the second connecting arm 705 are fixedly connected to one end of the drive shaft 702 and the rotating shaft 706 respectively. The other ends of the first connecting arm 703 and the second connecting arm 705 are fixedly connected to the same connecting post 704. A connecting plate 707 is rotatably sleeved on the outside of the connecting post 704. A sliding plate 803 is fixedly connected to the top of the connecting plate 707. The sliding plate 803 is slidably sleeved on the outside of the guide rail 709. The other end of the drive shaft 702 is fixedly connected to the output shaft of the drive motor 701. The drive motor 701 is fixedly installed on the outside of the housing 1. The other end of the rotating shaft 706 is rotatably connected to the outside of the waste heat recovery box 4.

[0044] In this embodiment, dustproof nets 101 are fixedly installed on both the front and rear sides of the housing 1, and a controller 9 is fixedly installed on the top inner wall of the housing 1.

[0045] In this embodiment, during use, the first water pump 302, the second water pump 402, the compressor 201, and the fan are started. The first water pump 302 introduces cold water into the condenser 3 through the cold water pipe 301. The compressor 201 draws in low-temperature, low-pressure gaseous refrigerant and compresses it into high-temperature, high-pressure gas using electrical energy, completing energy input and heating. The high-temperature refrigerant in the condenser 202 releases sensible heat to heat the water in the condenser 3, while simultaneously condensing the refrigerant into a high-pressure liquid. The liquid refrigerant is then introduced into the waste heat recovery pipe. Inside 203, the second water pump 402 introduces cold water into the waste heat recovery tank 4 to further recover the waste heat of the refrigerant. The liquid storage tank 204 stores liquid refrigerant to balance the system flow fluctuations. The expansion valve 205 reduces the pressure and turns the liquid refrigerant into a partially liquid and partially gaseous state. The evaporator 206 absorbs heat from the air, and the refrigerant is completely evaporated into a low-temperature, low-pressure gas, which then re-enters the compressor 201 to complete the cycle. After the fan starts, the motor 501 drives the fan blades 502 to rotate, increasing the air circulation speed and thus increasing the heat exchange speed.

[0046] The heated water in the condenser 3 is discharged through the hot water rod. The first temperature sensor 304 monitors the water temperature in the hot water pipe 303. When the required temperature is not reached, the controller 9 controls the compressor 201 and motor 501 to increase their power and controls the first water pump 302 to decrease their power, thereby increasing the heating speed of the water in the condenser 3 and reducing the water flow rate to ensure that the hot water temperature in the hot water pipe 303 reaches the required temperature.

[0047] The second temperature sensor 404 monitors the water temperature in the recovery outlet pipe 403. When a temperature increase is detected, the controller 9 controls the output speed of the drive motor 701 to increase, thereby increasing the rotational speed of the drive shaft 702. The drive motor 701 drives the connecting column 704 to perform circular motion through the first connecting arm 703. The connecting column 704, in cooperation with the connecting plate 707, the sliding seat 708, and the slide rail 804, drives the piston plate 607 to move up and down reciprocally. This causes the first one-way valve 603, the second one-way valve 605, the third one-way valve 609, and the fourth one-way valve 611 to all move from left to right, allowing the water in the recovery outlet pipe 403 to enter the inlet pipe 612, and then through the first inlet pipe 608 and the second inlet pipe 610 into the compression tank 601, and through the first outlet pipe 602 and the second outlet pipe 605. 4. The water is introduced into the outlet pipe 606 and then into the waste heat recovery box 4. It is then heated again through the waste heat recovery pipe 203 to improve the heating effect. The drive shaft 702 drives the rotating frame 801 to rotate, and the inclined rail 802 drives the slide plate 803 and guide rail 709 to perform circular motion. Under the action of centrifugal force, the slide plate 803 tends to move outward and applies leftward pressure to the guide rail 709, cylinder 805, connecting cylinder 806 and vertical plate 807. The pressure is monitored by the pressure sensor 809. When the speed of the drive shaft 702 increases, the pressure sensor 809 senses an increase in pressure. The controller 9 controls the power of the second water pump 402 to increase the water inlet speed and the water flow speed in the waste heat recovery box 4, thereby improving the waste heat recovery effect of the refrigerant.

[0048] The present invention provides a detailed description of a heat pump unit with energy recovery. Specific embodiments have been used to illustrate the principles and implementation methods of the invention. These embodiments are merely illustrative and are intended to help understand the method and core concepts of the invention. It should be noted that those skilled in the art can make various improvements and modifications to the invention without departing from its principles, and these improvements and modifications also fall within the scope of protection of the claims.

Claims

1. A heat pump unit with energy recovery, characterized in that, include: The housing (1) is equipped with a heat circulation mechanism (2), a fan, a condenser box (3) and a waste heat recovery box (4) inside the housing (1). A circulation conveying mechanism (6) and a drive mechanism (7) are provided on one side of the waste heat recovery box (4). The circulating conveying mechanism (6) includes a compression box (601) and a piston plate (607). The piston plate (607) is slidably connected inside the compression box (601), and a connecting rod (613) is fixedly connected to the bottom of the piston plate (607). The drive mechanism (7) includes a drive motor (701), a drive shaft (702), a guide rail (709), and a rotating shaft (706). The guide rail (709) is fixedly connected to the bottom end of the connecting rod (613). A transmission mechanism (8) is provided on the outside of the drive shaft (702). The transmission mechanism (8) includes a rotating frame (801), a cylinder (805), and a connecting cylinder (806). The rotating frame (801) is fixedly sleeved on the outside of the drive shaft (702). The connecting cylinder (806) is rotatably sleeved on the outside of the cylinder (805). A vertical plate (807) is fixedly connected to the top and bottom of the connecting cylinder (806). A pressure sensor (809) is fixedly connected to one side of the vertical plate (807). The other end of the pressure sensor (809) is fixedly connected to the side wall of the housing (1). The waste heat recovery box (4) is fixedly installed inside the casing (1), and one side of the waste heat recovery box (4) is connected to a recovery inlet pipe (401) and a recovery outlet pipe (403). A second water pump (402) is fixedly installed on the front side of the casing (1). The other end of the recovery inlet pipe (401) is connected to the outlet of the second water pump (402), and a second temperature sensor (404) is installed inside the recovery outlet pipe (403). The bottom end of the connecting rod (613) is fixedly connected to the guide rail (709). One side of the compression box (601) is connected to a first outlet pipe (602) and a second outlet pipe (604). A first one-way valve is installed inside the first outlet pipe (602). The valve (603) is provided with a second one-way valve (605) in the second outlet pipe (604). The other ends of the first outlet pipe (602) and the second outlet pipe (604) are connected to the same water outlet pipe (606). The other side of the compression box (601) is connected to the first inlet pipe (608) and the second inlet pipe (610). The first inlet pipe (608) and the second inlet pipe (610) are connected to the same water inlet pipe (612). The top end of the water inlet pipe (612) is connected to the recovery outlet pipe (403). The first inlet pipe (608) is provided with a third one-way valve (609). The second inlet pipe (610) is provided with a fourth one-way valve (611).

2. The heat pump unit with energy recovery according to claim 1, characterized in that, A crossbar (808) is fixedly connected to the side wall of the housing (1). The vertical plate (807) is slidably sleeved on the outside of the crossbar (808). A slide rail (804) is fixedly connected to the outside of the cylinder (805). A sliding seat (708) is slidably sleeved on the outside of the slide rail (804). A plurality of inclined rails (802) are fixedly connected to one side of the rotating frame (801). The sliding seat (708) is slidably sleeved on the outside of the corresponding inclined rail (802).

3. The heat pump unit with energy recovery according to claim 1, characterized in that, The heat circulation mechanism (2) includes a compressor (201), a condenser (202), a waste heat recovery pipe (203), a liquid storage tank (204), an expansion valve (205), and an evaporator (206). The outlet and inlet of the compressor (201) are respectively connected to one end of the condenser (202) and one end of the evaporator (206). The other end of the evaporator (206) is connected to the expansion valve (205). The other end of the expansion valve (205) is connected to one side of the liquid storage tank (204). The other side of the liquid storage tank (204) is connected to the bottom end of the waste heat recovery pipe (203). The top end of the waste heat recovery pipe (203) is connected to the other end of the condenser (202). The waste heat recovery pipe (203) is fixedly installed inside the waste heat recovery box (4).

4. The heat pump unit with energy recovery according to claim 1, characterized in that, The fan includes a duct (5), a fan blade (502), and a motor (501). The front and rear sides of the housing (1) are provided with through holes. The duct (5) is fixedly installed in the through holes, and the motor (501) is fixedly installed in the duct (5). The output end of the motor (501) is fixedly connected to the fan blade (502). A partition (102) is fixedly installed inside the housing (1).

5. The heat pump unit with energy recovery according to claim 3, characterized in that, The condenser box (3) is fixedly installed inside the casing (1), and the condenser (202) is fixedly installed inside the condenser box (3). A cold water pipe (301) and a hot water pipe (303) are connected to one side of the condenser box (3). A first temperature sensor (304) is installed inside the hot water pipe (303). A first water pump (302) is fixedly installed on one side of the casing (1). The other end of the cold water pipe (301) is connected to the outlet of the first water pump (302).

6. The heat pump unit with energy recovery according to claim 1, characterized in that, The drive shaft (702) and the rotating shaft (706) are respectively fixedly connected to a first connecting arm (703) and a second connecting arm (705) at their respective close ends. The other ends of the first connecting arm (703) and the second connecting arm (705) are fixedly connected to the same connecting post (704). A connecting plate (707) is rotatably sleeved on the outside of the connecting post (704). A sliding plate (803) is fixedly connected to the top of the connecting plate (707). The sliding plate (803) is slidably sleeved on the outside of the guide rail (709). The other end of the drive shaft (702) is fixedly connected to the output shaft of the drive motor (701).

7. The heat pump unit with energy recovery according to claim 1, characterized in that, A controller (9) is fixedly installed on the top inner wall of the housing (1).

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