A mains water source heat pump system

Abstract

The application provides a tap water source heat pump system and belongs to the technical field of tap water source heat pump, and solves the problem of water quality after tap water heat exchange and temperature rise in the prior art. The tap water source heat pump system comprises a tap water source system and a heat pump unit system, the heat pump unit system comprises a first heat exchanger and a second heat exchanger, the first heat exchanger is provided with gaseous refrigerant heat exchange pipes and water source heat exchange pipes, the second heat exchanger is provided with liquid refrigerant heat exchange pipes and cold medium heat exchange pipes, the tap water source system comprises a clean water pool, the outlet of the clean water pool is connected with a pressurizing pump through a pipeline, the pressurizing pump is connected with the inlet of the water source heat exchange pipes through a pipeline, and the outlet of the water source heat exchange pipes is connected with a chlorination device which is communicated with the inlet of the clean water pool through a pipeline. The chlorination device arranged in the tap water source system can perform chlorination treatment on tap water, dynamically maintain an effective bacteriostatic level, block the breeding environment of bacteria, algae and other microorganisms, and ensure that the water quality of tap water after heat exchange and temperature rise is good.

Description

Technical Field

[0001] This invention belongs to the field of tap water source heat pump technology, specifically to a tap water source heat pump system. Background Technology

[0002] Water source heat pump technology is a high-efficiency energy utilization system based on thermodynamic cycles. Its core principle is to use a small amount of electricity to drive a refrigerant phase change cycle, upgrading the low-grade heat energy (such as solar and geothermal energy) stored in shallow surface water bodies (such as groundwater, rivers, and lakes) to higher-grade heat energy. In summer, the system uses the water body as a cold source, transferring heat from the building's interior to the water source to complete the cooling cycle; in winter, it operates in reverse, extracting heat from the water source and delivering it to the building's interior for heating. This technology can efficiently utilize the natural energy in water bodies to meet the heating and cooling needs of buildings, exhibiting significant energy efficiency advantages.

[0003] Existing technology, such as patent publication number CN206817821U, discloses a water source heat pump system using tap water as a heat source and cold source. It includes upstream and downstream buffer storage tanks, a first heat exchanger, a compressor, a second heat exchanger, an expansion valve, a water pump, and several valves. Branch lines connect the upstream and downstream tap water pipes to the upstream and downstream buffer storage tanks, respectively. A branch line of the first heat exchanger connects the upstream and downstream tap water pipes. The first heat exchanger is connected to a bypass water pipe, and a connecting pipe connects the bypass water pipe and the branch line of the first heat exchanger. The water pump is connected to the connecting pipe, enabling the water in the downstream buffer storage tank to circulate and exchange heat within the first heat exchanger. Valves are connected to each branch line / pipe and the bypass water pipe to control the flow of water. The compressor and expansion valve are connected to the refrigerant outlet and inlet pipes of the second heat exchanger, respectively, allowing the refrigerant to circulate between the second and first heat exchangers. This solves the problem of existing heat pump systems failing to operate normally during peak water usage periods.

[0004] The aforementioned patent states that after the tap water is heated through heat exchange, the free chlorine (hypochlorous acid HClO and hypochlorite ions ClO⁻) will decrease, and bacteria, algae and other microorganisms will proliferate in large quantities, affecting the water quality of the tap water. Summary of the Invention

[0005] To address the aforementioned problems, the present invention aims to provide a tap water source heat pump system. By installing a chlorination device in the tap water source system, the tap water can be chlorinated to dynamically maintain an effective antibacterial level, block the growth environment of bacteria, algae and other microorganisms, and ensure good water quality after heat exchange and temperature increase.

[0006] The technical solution adopted in this invention is as follows: A tap water source heat pump system includes a tap water source system and a heat pump unit system. The heat pump unit system includes a first heat exchanger and a second heat exchanger. The first heat exchanger is equipped with a gaseous refrigerant heat exchange tube and a water source heat exchange tube. The second heat exchanger is equipped with a liquid refrigerant heat exchange tube and a cooling medium heat exchange tube. An expansion valve is installed on the pipe between the outlet of the gaseous refrigerant heat exchange tube and the inlet of the liquid refrigerant heat exchange tube. A [missing information - likely a valve or device] is installed on the pipe between the inlet of the gaseous refrigerant heat exchange tube and the outlet of the liquid refrigerant heat exchange tube. The steam compressor is included in the tap water system, which includes a clear water tank. The outlet of the clear water tank is connected to a booster pump via a pipe. The booster pump is connected to the inlet of a water source heat exchange pipe via a pipe. The outlet of the water source heat exchange pipe is connected to a chlorination device that communicates with the inlet of the clear water tank via a pipe. A filter is installed on the pipe between the outlet of the water source heat exchange pipe and the chlorination device. A first temperature sensor is installed on the pipe connected to the inlet of the water source heat exchange pipe, and a second temperature sensor is installed on the pipe connected to the outlet of the water source heat exchange pipe.

[0007] Preferably, the chlorination device includes a housing with a channel inside, both ends of which are connected to water pipes. A conical cavity is located above the channel within the housing, and a groove communicating with the channel is opened at the bottom of the conical cavity. A first telescopic rod is movably installed in the groove, and two spaced piston heads are fixedly installed on the first telescopic rod. The distance between the two piston heads is less than the depth of the groove. A sodium hypochlorite storage tank is located above the conical cavity within the housing, and a discharge pipe is installed at the bottom of the sodium hypochlorite storage tank, with a solenoid valve installed in the discharge pipe.

[0008] Preferably, a free chlorine sensor is provided in the channel.

[0009] Preferably, an annular support plate is fixedly connected to the outer wall of the sodium hypochlorite storage tank, and a weighing sensor that contacts the annular support plate is provided on the shell.

[0010] Preferably, the side wall of the housing has an operating cavity, the operating cavity is provided with a sleeve communicating with the through groove, a sealing plug is movably sealed in the sleeve, the sealing plug is connected to a second telescopic rod fixed in the operating cavity, and a drain pipe is connected to the lower surface of the sleeve.

[0011] Preferably, the sleeve is inclined downwards.

[0012] Preferably, the flow direction of the gaseous refrigerant heat exchanger tube is opposite to that of the water source heat exchanger tube, and the flow direction of the liquid refrigerant heat exchanger tube is opposite to that of the cold medium heat exchanger tube.

[0013] Preferably, the outlet and inlet of the clear water tank are respectively located at both ends of the clear water tank.

[0014] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: Installing a chlorination device in the tap water system can treat the tap water with chlorine, dynamically maintain an effective level of antibacterial activity, block the growth environment of bacteria, algae and other microorganisms, and ensure good water quality after heat exchange and temperature increase. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a flowchart provided for an embodiment of the present invention; Figure 2 This is a schematic diagram of the chlorination device provided in an embodiment of the present invention; Figure 3 for Figure 2 Enlarged structural diagram at point A in the middle.

[0017] Figure reference numerals: 1-Water supply system; 101-Clear water tank; 102-Boosting pump; 103-First temperature sensor; 104-Second temperature sensor; 105-Filter; 106-Chlorination device; 1061-Housing; 1062-Channel; 1063-Conical cavity; 1064-Operating chamber; 1065-Discharge pipe; 1066-Annular support plate; 1067-Sodium hypochlorite storage tank; 1068-Weighing sensor; 1069-Free chlorine sensor; 10610 10611-First telescopic rod; 10612-Through groove; 10613-Sealing plug; 10614-Drain pipe; 10615-Sleeve; 10616-Second telescopic rod; 2-Heat pump unit system; 201-First heat exchanger; 202-Gaseous refrigerant heat exchange tube; 203-Expansion valve; 204-Second heat exchanger; 205-Water source heat exchange tube; 206-Steam compressor; 207-Liquid refrigerant heat exchange tube; 208-Cold medium heat exchange tube; 3-Tap water pipe. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0019] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0020] In the description of this invention, it should be noted that if terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use, they are only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0021] The following is combined with Figures 1-3 The present invention will be described in detail below.

[0022] Example A tap water source heat pump system includes a tap water source system 1 and a heat pump unit system 2. The heat pump unit system 2 includes a first heat exchanger 201 and a second heat exchanger 204. The first heat exchanger 201 is equipped with a gaseous refrigerant heat exchange pipe 202 and a water source heat exchange pipe 205. The second heat exchanger 204 is equipped with a liquid refrigerant heat exchange pipe 207 and a refrigerant heat exchange pipe 208. A pipe is installed between the outlet of the gaseous refrigerant heat exchange pipe 202 and the inlet of the liquid refrigerant heat exchange pipe 207. An expansion valve 203 is provided. A steam compressor 206 is installed on the pipeline between the inlet of the gaseous refrigerant heat exchange pipe 202 and the outlet of the liquid refrigerant heat exchange pipe 207. The tap water source system 1 includes a clear water tank 101. The outlet of the clear water tank 101 is connected to a booster pump 102 through a pipeline. The booster pump 102 is connected to the inlet of the water source heat exchange pipe 205 through a pipeline. The outlet of the water source heat exchange pipe 205 is connected to a chlorination device 106 that is connected to the inlet of the clear water tank 101 through a pipeline.

[0023] The clear water tank 101 is located in the booster pump station of the tap water supply network. It is a water tank in the booster pump station. The booster pump 102 draws tap water from the clear water tank 101 and sends it to the water source heat exchange pipe 205. After absorbing heat from the refrigerant in the first heat exchanger 201, the water flows back to the clear water tank 101 by relying on residual pressure. The clear water tank 101 is completely sealed to the pipeline to prevent external pollutants from entering. During the tap water return process, the chlorination device 106 can chlorinate the tap water to dynamically maintain an effective antibacterial level, block the growth environment of bacteria, algae and other microorganisms, and ensure good water quality after heat exchange and temperature rise.

[0024] In summer, the temperature of tap water leaving the treatment plant is typically between 12℃ and 18℃. Because the water supply network is buried underground, it is less affected by surface air temperature, allowing the water temperature to remain low and stable. This stable low-temperature characteristic increases the heat exchange temperature difference between the tap water and the refrigerant, providing higher cooling output compared to traditional water sources, thus significantly reducing energy consumption. Clear water tank 101, as a thermal buffer unit, also has peak shaving and valley filling regulation functions. By dynamically balancing fluctuations in the municipal water supply network, it ensures a continuous supply of cooling capacity and water flow from the water source, guaranteeing stable operation of the tap water source heat pump.

[0025] In cooling mode, the heat pump unit system 2 operates with the first heat exchanger 201 as a condenser. High-temperature, high-pressure gaseous refrigerant flows into the gaseous refrigerant heat exchange tube 202 of the first heat exchanger 201, exchanging heat with tap water from the clear water tank 101 in the water source heat exchange tube 205, releasing heat and condensing into a high-pressure liquid. The tap water absorbs heat and flows back to the clear water tank 101 through pipes. During this process, the temperature of the outflowing refrigerant is higher than the temperature of the inflowing tap water. Subsequently, the high-pressure liquid refrigerant flows into the expansion valve 203 for adiabatic throttling, forming a low-temperature, low-pressure liquid before entering the second heat exchanger 204. The second heat exchanger 204 operates as an evaporator, with low-temperature, low-pressure liquid refrigerant flowing into its liquid refrigerant heat exchange tube 207, exchanging heat with the cold medium in the cold medium heat exchange tube 208. Because the refrigerant temperature is always lower than the cold medium temperature, the refrigerant absorbs heat from the cold medium, lowering its temperature and fulfilling the cooling requirement at the user end. The low-temperature, low-pressure gaseous refrigerant, after evaporation, is compressed into a high-temperature, high-pressure gaseous refrigerant by the steam compressor 206, and then flows back into the first heat exchanger 201 to complete the thermodynamic cycle. In winter, the first heat exchanger 201 operates as an evaporator, and the second heat exchanger 204 operates as a condenser, using high-temperature tap water to provide heat and transfer heat to the cold medium heat exchange tube 208 to meet the heating needs of the heat-consuming end.

[0026] In this embodiment, by precisely controlling the booster pump 102, the flow rate of the water source heat exchange tube 205 can be dynamically adjusted as needed to adapt to different cooling load requirements and achieve precise matching between cooling capacity and cooling load.

[0027] The pipes of the tap water source system 1 and the flow-through components of the booster pump 102 are all made of stainless steel. While maintaining the efficient heat transfer performance of the heat exchanger, it can also resist the corrosion of chloride ions (Cl⁻), dissolved oxygen and trace minerals in tap water, and avoid the precipitation of impurities due to pipe corrosion, which would pollute the water source.

[0028] The chlorination device 106 includes a housing 1061, a channel 1062 in the housing 1061, and water pipes 3 connected to both ends of the channel 1062. A conical cavity 1063 is provided in the housing 1061 above the channel 1062. A through groove 10612 communicating with the channel 1062 is opened at the bottom of the conical cavity 1063. A first telescopic rod 10610 is movably arranged in the through groove 10612. Two spaced piston heads 10611 are fixedly arranged on the first telescopic rod 10610. The distance between the two piston heads 10611 is less than the depth of the through groove 10612. A sodium hypochlorite storage tank 1067 is provided in the housing 1061 above the conical cavity 1063. A discharge pipe 1065 is provided at the bottom of the sodium hypochlorite storage tank 1067. A solenoid valve is provided in the discharge pipe 1065. The distance between the two piston heads 10611 is less than the depth of the through groove 10612, ensuring that the upper piston head 10611 enters the through groove 10612 before the lower piston head 10611 moves out of the through groove 10612.

[0029] The first telescopic rod 10610 and the solenoid valve are connected to a controller (the controller is prior art and is not shown in the figure). The first telescopic rod 10610 can be a hydraulic telescopic rod or a lifting rod driven by a screw. When chlorination is required, the controller opens the solenoid valve, allowing sodium hypochlorite solution to fall from the sodium hypochlorite storage tank 1067 into the conical cavity 1063 and collect in the through groove 10612. At this time, the lower piston head 10611 blocks the through groove 10612. Then, the first telescopic rod 10610 extends. Before the lower piston head 10611 moves out of the through groove 10612, the upper piston head 10611 enters the through groove 10612 to block it. After the lower piston head 10611 moves out of the through groove 10612, the sodium hypochlorite solution mixes with tap water to generate hypochlorous acid, thereby replenishing free chlorine and ensuring the disinfection effect of tap water. Because the upper piston head 10611 blocks the through groove 10612, tap water will not enter the conical cavity 1063, ensuring the normal addition of sodium hypochlorite solution and realizing online chlorination operation on the tap water pipe.

[0030] A free chlorine sensor 1069 is installed in channel 1062. The free chlorine sensor 1069 is connected to the controller and can detect the concentration of free chlorine in tap water. When the free chlorine concentration drops to a set value, the free chlorine sensor 1069 sends a signal back to the controller. The controller then controls the solenoid valve to open and add sodium hypochlorite solution. After the sodium hypochlorite solution is added, the controller closes the solenoid valve and controls the extension and retraction of the first telescopic rod 10610. The detection time of the free chlorine sensor 1069 needs to be timed; that is, after adding sodium hypochlorite, the tap water needs to circulate for a certain period of time before detection is performed to determine whether the free chlorine concentration meets the requirements.

[0031] An annular support plate 1066 is fixedly connected to the outer wall of the sodium hypochlorite storage tank 1067. A weighing sensor 1068 is installed on the shell 1061, which contacts the annular support plate 1066. The weighing sensor 1068 is connected to a controller and can monitor the weight of the sodium hypochlorite storage tank 1067 in real time. When sodium hypochlorite solution is added, after the weight drops to a certain value, the weighing sensor 1068 sends a feedback signal to the controller, which automatically controls the solenoid valve to close, thereby realizing the quantitative addition of sodium hypochlorite solution.

[0032] The side wall of the housing 1061 is provided with an operating cavity 1064. The operating cavity 1064 is provided with a sleeve 10615 that communicates with the through groove 10612. A sealing plug 10613 is movably sealed in the sleeve 10615. The sealing plug 10613 is connected to a second telescopic rod 10616 fixed in the operating cavity 1064. A drain pipe 10614 is connected to the lower surface of the sleeve 10615. When the second telescopic rod 10616 pushes the sealing plug 10613 to one end near the through groove 10612, the sealing plug 10613 seals the sleeve 10615, preventing the sodium hypochlorite solution from flowing out of the sleeve 10615 when it is added. When the two piston heads 10611 return to their original positions, the lower piston head 10611 will bring some tap water into the through groove 10612, thus affecting the amount of sodium hypochlorite solution added later. At this time, the second telescopic rod 10616 can be controlled to retract, moving the sealing plug 10613 to the left side of the upper opening of the drain pipe 10614. The tap water in the through groove 10612 is discharged from the housing 1061 through the sleeve 10615 and the drain pipe 10614, so as to ensure that the through groove 10612 has enough space to accommodate the sodium hypochlorite solution. After the tap water is discharged, the sealing plug 10613 is pushed back to its initial position.

[0033] The second telescopic rod 10616 can be a hydraulic telescopic rod or a telescopic rod driven by a screw lifting mechanism. The second telescopic rod 10616 is connected to the controller, which can be set with a timer to control the extension of the second telescopic rod 10616. For example, when the first telescopic rod 10610 retracts to its position, the controller automatically controls the second telescopic rod 10616 to retract. After draining for a certain period of time, the controller automatically controls the extension of the second telescopic rod 10616 to push the sealing plug 10613 back to its initial position.

[0034] The sleeve 10615 is tilted downwards, which makes it easier to drain the tap water from the through groove 10612.

[0035] The number of times sodium hypochlorite solution can be added can be set according to the amount of tap water. When the free chlorine content is detected to be low, sodium hypochlorite solution can be added repeatedly to bring the free chlorine content up to standard.

[0036] A filter 105 is installed on the pipeline between the outlet of the water source heat exchange pipe 205 and the chlorination device 106. The filter 105 is mainly used to remove suspended particulate matter, mechanical impurities with a particle size ≥20μm, and some colloidal substances from the tap water source. These impurities generally originate from rust residue generated by corrosion of the inner wall of old external water supply pipes, as well as from short-flow or stagnant zones formed by sudden expansion or contraction of the inlet and outlet areas of the water source heat exchange pipe 205, which significantly reduces the local flow velocity and obstructs the diffusion of residual chlorine, thus promoting the growth of microorganisms. The filter 105 preferentially intercepts impurities in the pipeline to prevent blockage of subsequent pipelines and to prevent affecting the operation of the chlorination device 106. The filter 105 and the chlorination device 106 form a synergistic mechanism of "filtration first, chlorination later," which maintains the cleanliness of the water and inhibits the growth of microorganisms. This layout can also utilize the low-temperature environment at the end to improve the chlorination efficiency, ultimately ensuring that the tap water returning to the clear water tank is always in a safe and hygienic state, and guaranteeing the long-term stable operation of the system.

[0037] A first temperature sensor 103 is installed on the pipe connected to the inlet of the water source heat exchanger 205, and a second temperature sensor 104 is installed on the pipe connected to the outlet of the water source heat exchanger 205. The first temperature sensor 103 and the second temperature sensor 104 are used to monitor the temperature of the tap water entering and exiting the water source heat exchanger 205 in real time. By collecting the temperature difference data, the heat exchange efficiency of the heat exchanger can be dynamically evaluated, and the operating parameters of the booster pump 102 can be adjusted when the temperature difference deviates from the design value, so that the temperature difference returns to a reasonable range, thereby ensuring the efficient and stable operation of the system. Preferably, the first temperature sensor 103 is located near the inlet of the water source heat exchanger 205, and the second temperature sensor 104 is located near the outlet of the water source heat exchanger 205, thereby measuring temperature changes more accurately.

[0038] The flow direction of the gaseous refrigerant heat exchanger tube 202 is opposite to that of the water source heat exchanger tube 205, and the flow direction of the liquid refrigerant heat exchanger tube 207 is opposite to that of the cold medium heat exchanger tube 208, so that heat can be exchanged better.

[0039] The outlet and inlet of the clear water tank 101 are respectively located at both ends of the clear water tank 101. The outlet and inlet of the clear water tank 101 are located below the liquid surface of the clear water tank 101. This layout effectively avoids direct short-circuiting between the return water and the supply water by extending the water flow path. It ensures that the tap water with increased temperature after heat exchange can be fully mixed with the low temperature water from the water supply network after returning to the clear water tank 101, thereby reducing the water temperature and eliminating the impact of water temperature fluctuations on the heat pump heat exchange efficiency.

[0040] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A tap water source heat pump system, comprising a tap water source system (1) and a heat pump unit system (2), characterized in that, The heat pump unit system (2) includes a first heat exchanger (201) and a second heat exchanger (204). The first heat exchanger (201) is equipped with a gaseous refrigerant heat exchange tube (202) and a water source heat exchange tube (205). The second heat exchanger (204) is equipped with a liquid refrigerant heat exchange tube (207) and a cold medium heat exchange tube (208). An expansion valve (203) is installed on the pipe between the outlet of the gaseous refrigerant heat exchange tube (202) and the inlet of the liquid refrigerant heat exchange tube (207). A steam compressor (206) is installed on the pipe between the outlets. The tap water system (1) includes a clear water tank (101). The outlet of the clear water tank (101) is connected to a booster pump (102) via a pipe. The booster pump (102) is connected to the inlet of a water source heat exchange pipe (205) via a pipe. The outlet of the water source heat exchange pipe (205) is connected to a chlorination device (106) connected to the inlet of the clear water tank (101) via a pipe. A filter (105) is installed on the pipe between the outlet of the water source heat exchange pipe (205) and the chlorination device (106). A first temperature sensor (103) is installed on the inlet pipe of the water source heat exchange pipe (205), and a second temperature sensor (104) is installed on the outlet pipe of the water source heat exchange pipe (205). The chlorination device (106) includes a shell (1061), a channel (1062) is provided in the shell (1061), and tap water pipes (3) are connected to both ends of the channel (1062). A conical cavity (1063) is provided in the shell (1061) above the channel (1062), and the bottom of the conical cavity (1063) is provided to communicate with the channel (1062). The passage (10612) is movably arranged in the passage (10612), and two spaced piston heads (10611) are fixedly arranged on the first telescopic rod (10610). The distance between the two piston heads (10611) is less than the depth of the passage (10612). A sodium hypochlorite storage tank (1067) is arranged in the shell (1061) above the conical cavity (1063). A discharge pipe (1065) is arranged at the bottom of the sodium hypochlorite storage tank (1067), and a solenoid valve is arranged in the discharge pipe (1065).

2. The tap water source heat pump system according to claim 1, characterized in that, A free chlorine sensor (1069) is provided in the channel (1062).

3. A tap water source heat pump system according to claim 1, characterized in that, An annular support plate (1066) is fixedly connected to the outer wall of the sodium hypochlorite storage tank (1067), and a weighing sensor (1068) is provided on the shell (1061) in contact with the annular support plate (1066).

4. A tap water source heat pump system according to claim 1, characterized in that, The side wall of the housing (1061) is provided with an operating cavity (1064). The operating cavity (1064) is provided with a sleeve (10615) that communicates with the through groove (10612). A sealing plug (10613) is movably sealed in the sleeve (10615). The sealing plug (10613) is connected to a second telescopic rod (10616) fixed in the operating cavity (1064). A drain pipe (10614) is connected to the lower surface of the sleeve (10615).

5. A tap water source heat pump system according to claim 4, characterized in that, The sleeve (10615) is inclined downward.

6. A tap water source heat pump system according to claim 1, characterized in that, The flow direction of the gaseous refrigerant heat exchange tube (202) is opposite to that of the water source heat exchange tube (205), and the flow direction of the liquid refrigerant heat exchange tube (207) is opposite to that of the cold medium heat exchange tube (208).

7. A tap water source heat pump system according to claim 1, characterized in that, The outlet and inlet of the clear water pool (101) are respectively located at both ends of the clear water pool (101).

Images