A heat pump cycle system for a hydro module

Abstract

This utility model discloses a heat pump circulation system for a hydraulic module, comprising: a water supply pipe, a four-way valve, a magnetic mud filter, a circulation pump, a heat pump, and a water tank. The magnetic mud filter, circulation pump, heat pump, and water tank are connected sequentially along a pipeline. The water tank has an inlet and an outlet. The outlet of the heat pump is connected to the inlet of the water tank, and the outlet of the water tank is connected to the magnetic mud filter through a return water pipe. The water supply pipe is connected to the return water pipe through the four-way valve, and a water softener is connected to the four-way valve. The water softener is used to add cleaning agent to the water flowing into the return water pipe. By controlling the four-way valve, the water in the water supply pipe can selectively flow directly into the return water pipe, or flow into the return water pipe after passing through the water softener. The heat pump circulation system for the hydraulic module provided by this utility model achieves simultaneous water supply and cleaning, is simple to operate, greatly improves work efficiency, and eliminates the operational risks associated with manually adding cleaning agents.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic module technology, and in particular to a heat pump circulation system for a hydraulic module. Background Technology

[0002] The hydraulic module, as the core hydraulic distribution unit of the HVAC system, integrates a circulating pump, valves, and a control system to achieve directional delivery and flow regulation of heating and heat supply. Within this module, the heat pump circulation system continuously propels water through the heat pump for heating, forming a closed-loop hot water circulation circuit. During long-term operation, the high temperature causes hardness ions to precipitate from the water, leading to the gradual deposition of inorganic salt scale layers such as calcium carbonate and calcium sulfate on the inner walls of the heat pump circulation system pipes. This results in scale buildup on the pipe walls, requiring regular pipe cleaning and maintenance.

[0003] Existing maintenance solutions require periodically adding cleaning agents to the circulating water system to dissolve scale, which currently relies heavily on manual operation: after the system is shut down, technicians manually open the top cover of the magnetic mud filter to inject the cleaning agent, and then restart the circulating pump to promote the diffusion of the agent. This operation not only poses a safety risk of high-temperature fluid splashing, but also has low maintenance efficiency and a cumbersome process.

[0004] It is evident that existing technologies still need improvement and enhancement. Utility Model Content

[0005] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a heat pump circulation system for a hydraulic module, which aims to solve the technical problem of relying on manual opening of the magnetic mud filter to add cleaning agent in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A hydraulic module heat pump circulation system includes: a water supply pipe, a four-way valve, a magnetic mud filter, a circulation pump, a heat pump, and a water tank. The magnetic mud filter, circulation pump, heat pump, and water tank are connected sequentially along a pipeline. The water tank has an inlet and an outlet. The outlet of the heat pump is connected to the inlet of the water tank. The outlet of the water tank is connected to the magnetic mud filter through a return water pipe. The water supply pipe is connected to the return water pipe through the four-way valve. The four-way valve is externally connected to a water softener, which is used to add cleaning agent to the water flowing into the return water pipe. By controlling the four-way valve, the water in the water supply pipe can selectively flow directly into the return water pipe, or flow into the return water pipe after passing through the water softener.

[0008] Furthermore, the water softening device includes a tank, a stirring device, and a dosing device, wherein the stirring device is located inside the tank; the tank is provided with a chemical inlet, a water inlet pipe, and a chemical outlet pipe, wherein the water inlet pipe and the chemical outlet pipe are connected to a four-way valve; the dosing device includes a chemical tank, a dosing pipe, and a metering valve, wherein the dosing pipe connects the chemical tank and the chemical inlet, and the metering valve is located on the dosing pipe; the chemical outlet pipe is provided with a first switching valve.

[0009] Furthermore, the water tank includes a domestic water tank, which includes a tank body and a heat exchange tube disposed within the tank body. The heat exchange tube is provided with a first inlet and a first outlet. The outlet of the circulating pump is connected to the first inlet via a pipe. The return water pipe is provided with a first return water outlet, which is connected to the first outlet.

[0010] Furthermore, the water tank includes a buffer water tank, which includes a second inlet and a second outlet. The outlet of the circulating pump is connected to the second inlet via a pipe. The return water pipe is provided with a second return water outlet, which is connected to the second outlet.

[0011] Furthermore, the end of the water supply pipe is connected to a main pipe and a branch pipe. The main pipe is connected to an external water supply source, and a second switch valve is provided on the main pipe. The housing is provided with a water inlet, and the branch pipe is connected to the water inlet.

[0012] Furthermore, the water supply pipe is equipped with a backflow preventer, which is located between the four-way valve and the branch pipe.

[0013] Furthermore, it also includes vertically installed buffer pipes, the diameter of which is larger than that of the main pipe, branch pipes and water supply pipes. The lower end of the buffer pipe is connected to the main pipe and branch pipes, and its upper end is connected to the water supply pipe.

[0014] Beneficial effects:

[0015] This invention provides a hydraulic module heat pump circulation system. A closed-loop heat circulation system is formed by connecting a magnetic mud filter, a circulation pump, a heat pump, and a water tank via pipes. A four-way valve and a water softener are used to switch between water replenishment and cleaning modes. During water replenishment, the water in the replenishment pipe flows directly into the return pipe. During pipe cleaning, the water in the replenishment pipe first enters the water softener, where it mixes with the cleaning agent released by the softener. This mixture then flows into the return pipe and circulates within the heat pump circulation system, dissolving suspended impurities formed by scale buildup on the pipe walls. These impurities are ultimately trapped and discharged by the magnetic mud filter, achieving simultaneous water replenishment and cleaning. This completely eliminates the high-temperature, pressurized operation risks associated with manually opening the magnetic mud filter and adding cleaning agent. Furthermore, the entire cleaning process is simple to operate, greatly improving work efficiency. Attached Figure Description

[0016] Figure 1A structural diagram of the heat pump circulation system of the hydraulic module provided by this utility model;

[0017] Figure 2 for Figure 1 Enlarged view at point M;

[0018] Figure 3 A schematic diagram of the piping of the heat pump circulation system for the hydraulic module provided in this utility model;

[0019] Figure 4 A schematic diagram of the installation of the soft water device in the heat pump circulation system of the hydraulic module provided by this utility model.

[0020] Reference numerals: 1. Water supply pipe; 11. Main pipe; 12. Branch pipe; 13. Second switch valve; 14. Backflow preventer; 15. Buffer pipe; 2. Four-way valve; 21. First inlet; 22. Second inlet; 23. First outlet; 24. Second outlet; 25. Third switch valve; 26. Fourth switch valve; 27. Fifth switch valve; 3. Magnetic mud filter; 4. Circulation pump; 5. Heat pump; 6. Return water pipe; 61. First return water port; 62. Second return water port; 7. Soft water device; 71. Tank; 711. Inlet; 712. Outlet pipe; 713. Discharge pipe; 714. First switch valve; 72. Stirring device; 721. Drive motor; 722. Stirring paddle; 73. Dosing device; 731. Dosing tank; 732. Metering valve; 733. Domestic water tank; 8. Tank; 81. Heat exchange pipe; 82. First inlet; 83. First outlet; 84. Water supply port; 85. Buffer water tank; 9. Second inlet; 91. Second outlet; 92. Detailed Implementation

[0021] This utility model provides a heat pump circulation system for a hydraulic module. To make the purpose, technical solution, and effects of this utility model clearer and more explicit, the following describes this utility model in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0022] In the description of this utility model, it should be understood that the terms "upper," "lower," "left," and "right," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or a specific orientational structure and operation. Therefore, they should not be construed as limitations on this utility model. Furthermore, "first" and "second" are only for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "multiple" means two or more.

[0023] Please see Figures 1 to 4 As shown, this utility model provides a heat pump circulation system for a hydraulic module, including: a water supply pipe 1, a four-way valve 2, a magnetic mud filter 3, a circulation pump 4, a heat pump 5, and a water tank. The magnetic mud filter 3, the circulation pump 4, the heat pump 5, and the water tank are connected sequentially along the pipe. The water tank has an inlet and an outlet. The outlet of the heat pump 5 is connected to the inlet of the water tank. The outlet of the water tank is connected to the magnetic mud filter 3 through a return water pipe 6. The water supply pipe 1 is connected to the return water pipe 6 through the four-way valve 2. The four-way valve 2 is externally connected to a water softener 7, which is used to add cleaning agent to the water flowing into the return water pipe 6. By controlling the four-way valve 2, the water in the water supply pipe 1 can selectively flow directly into the return water pipe 6, or flow into the return water pipe 6 after passing through the water softener 7.

[0024] In the above, such as Figure 2 , 4 As shown, the four-way valve 2 is a prior art structure, wherein the four-way valve 2 is provided with a first inlet 21, a second inlet 22, a first outlet 23, and a second outlet 24, and is equipped with three independent control valves: a third switching valve 25, a fourth switching valve 26, and a fifth switching valve 27. The valve state combination controls the flow direction: when the third switching valve 25 is open and the fourth switching valve 26 and the fifth switching valve 27 are closed, the first inlet 21 and the first outlet 23 form a connecting channel; when the fourth switching valve 26 is open and the third switching valve 25 and the fifth switching valve 27 are closed, the first inlet 21 and the second outlet 24 form a connecting channel; when the fifth switching valve 27 is open and the third switching valve 25 and the fourth switching valve 26 are closed, the second inlet 22 and the first outlet 23 form a connecting channel. In actual installation, the first inlet 21 is connected to the water supply pipe 1, the first outlet 23 is connected to the return water pipe 6, the second outlet 24 is connected to the inlet end of the water softener 7, and the second inlet 22 is connected to the outlet end of the water softener 7.

[0025] During the operation of the heat pump circulation system, the circulation pump 4 drives water to flow through the heat pump 5 and heat it to form high-temperature water. The high-temperature water is then transported from the outlet of the heat pump 5 to the inlet of the water tank. After heat exchange is completed in the water tank, the water flows out from the outlet and returns to the magnetic mud filter 3 via the return water pipe 6 for impurity adsorption. Finally, under the action of the circulation pump 4, the water re-enters the heat pump 5 for heating, forming a closed-loop circulation. Due to natural water loss during system operation, water needs to be replenished through the water supply pipe 1.

[0026] During normal water replenishment, the four-way valve 2 switches to the open state of the third switch valve 25, and the fourth switch valve 26 and the fifth switch valve 27 are closed. At this time, the first inlet 21 and the first outlet 23 are connected, and the external water source is directly injected into the return water pipe 6 through the water replenishment pipe 1 to achieve system water replenishment.

[0027] When it is necessary to remove scale from the pipes of the heat pump circulation system, switch the four-way valve 2 to the open state of the fourth switch valve 26 and the fifth switch valve 27, and close the third switch valve 25. At this time, the first inlet 21 is connected to the second outlet 24, and the second inlet 22 is connected to the first outlet 23. The water from the water supply pipe 1 first enters the water softener 7 through the second outlet 24. The water softener 7 injects cleaning agent into the water flow to form a mixed solution. This solution flows from the outlet of the water softener 7 through the second inlet 22 to the first outlet 23, and finally enters the heat pump circulation system through the return water pipe 6. The suspended impurities formed after the cleaning agent dissolves the scale on the inner wall of the pipe are intercepted and discharged from the system when flowing through the magnetic mud filter 3, realizing the simultaneous execution of water supply and cleaning. This completely eliminates the high-temperature and pressurized operation risks caused by manually opening the magnetic mud filter 3 to add cleaning agent, and improves work efficiency.

[0028] Preferably, the four-way valve 2 is an electric valve, which can remotely control the opening and closing of each switch valve of the four-way valve 2, further improving the convenience of maintaining the heat pump circulation system pipeline and enhancing automated operation.

[0029] The cleaning agent used above is Caleffl's C3 cleaning agent, model 5709, which can remove sludge, scale, and impurities from the water. Alternatively, the cleaning agent can be changed according to actual usage needs, such as replacing it with a bactericide, inhibitor, or leak-proof agent to achieve different maintenance effects on the heat pump circulation system piping.

[0030] In a preferred embodiment, see [reference] Figure 4 The water softening device 7 includes a tank 71, a stirring device 72, and a dosing device 73. The stirring device 72 is located inside the tank 71. Specifically, the stirring device 72 includes a drive motor 721 located at the top of the tank 71 and a stirring paddle 722 connected to the drive motor 721, with the stirring paddle 722 extending into the tank 71. The tank 71 is provided with a chemical inlet 711, a water inlet pipe 712, and a chemical outlet pipe 713, which are connected to a four-way valve 2. The dosing device 73 includes a chemical tank 731, a dosing pipe 732, and a metering valve 733. The dosing pipe 732 connects the chemical tank 731 and the chemical inlet 711, and the metering valve 733 is located on the dosing pipe 732. The dosing pipe 713 is provided with a first switching valve 714. The chemical tank 731 is used to store cleaning agent, and the metering valve 733 can quantitatively dispense the cleaning agent. When water from the water supply pipe 1 is injected into the tank 71 through the water inlet pipe 712, the metering valve 733 dispenses a quantitative amount of cleaning agent from the medicine compartment 731 into the tank 71 according to the water circulation volume of the heat pump circulation system; the drive motor 721 synchronously drives the stirring paddle 722 to rotate, so that the cleaning agent and the replenishing water are fully mixed to form a uniform solution; after the first switch valve 714 is opened, the mixed solution is transported to the return water pipe 6 through the medicine discharge pipe 713, realizing the fully automatic and precise proportioning and dissolution of the cleaning agent during the water replenishment process.

[0031] It should be noted that in actual use, the water softener 7 is an optional component for the user, and its specific structural type can be selected according to the actual use. The water softener 7 is one type of device that can quantitatively add cleaning agent.

[0032] In a preferred embodiment, see [reference] Figure 3 The water tank includes a domestic water tank 8, which comprises a tank body 81 and heat exchange tubes 82 disposed within the tank body 81. The heat exchange tubes 82 are provided with a first inlet 83 and a first outlet 84. The outlet of the circulating pump 4 is connected to the first inlet 83 via a pipe. The return pipe 6 is provided with a first return outlet 61, which is connected to the first outlet 84. The tank body 81 of the domestic water tank 8 serves as a storage and supply unit for clean water. It acts as an intermediate water storage link, allowing high-temperature water heated by the heat pump circulation system to continuously flow through the heat exchange tubes 82, enabling efficient heat exchange between the outer wall of the tubes and the domestic water inside the tank body 81. This heats the domestic water to a set temperature, providing a stable supply of hot water for daily washing, cleaning, and other needs.

[0033] In a preferred embodiment, see [reference] Figure 3 The water tank includes a buffer tank 9, which has a second inlet 91 and a second outlet 92. The outlet of the circulation pump 4 is connected to the second inlet 91 via a pipe. The return pipe 6 has a second return outlet 62, which is connected to the second outlet 92. The buffer tank 9 serves as a heat energy storage and distribution unit, storing high-temperature hot water continuously heated by the heat pump 5. It releases heat energy by outputting high-temperature water to a water heating system (such as underfloor heating or radiator arrays). The low-temperature water after heat release flows back to the buffer tank 9 to accumulate again, and finally returns to the heat pump circulation system via the second outlet 92 for recirculation and heating, forming a dynamic buffer against fluctuations in heating load and ensuring that the heat pump 5 always operates within its optimal thermal efficiency range.

[0034] In a preferred embodiment, see [reference] Figure 1 , 3 The water supply pipe 1 is connected to a main pipe 11 and a branch pipe 12 at its end. The main pipe 11 is connected to an external water supply source, and a second switch valve 13 is provided on the main pipe 11. The tank 81 is provided with a water inlet 85, and the branch pipe 12 is connected to the water inlet 85. When the water level in the heat pump circulation system is insufficient, the second switch valve 13 is opened, and the water supply source injects tap water into the main pipe 11. The tap water flows into the water supply pipe 1 through the main pipe 11, thereby replenishing the circulating water in the heat pump circulation system. When the water level in the domestic water tank 8 is insufficient, the second switch valve 13 is opened, and the water supply source injects tap water into the main pipe 11. The tap water flows into the branch pipe 12 through the main pipe 11, thereby replenishing the domestic water tank 8 with domestic water.

[0035] Further, see Figure 1 , 3 The water supply pipe 1 is equipped with a backflow preventer 14, specifically a BA type backflow preventer, whose structure is existing technology and will not be described in detail here. The backflow preventer 14 actively blocks the backflow of water in the heat pump circulation system pipeline through the water supply pipe 1 and the branch pipe 12 into the tank 81 of the domestic water tank 8, completely avoiding cross-contamination between circulating water and domestic hot water, and ensuring the safety of domestic water quality.

[0036] It should be noted that, regardless of whether the circulating water in the heat pump circulation system or the domestic water in the tank 81 is being replenished, after the second switch valve 13 is opened, when the four-way valve 2 is open, the tap water flows through the main pipe 11 to the water supply pipe 1 to replenish the circulating water. At the same time, the tap water flows through the main pipe 11 to the branch pipe 12 to replenish the domestic water. Under the action of the backflow preventer 14, the circulating water in the heat pump circulation system is prevented from flowing back through the water supply pipe 1 to the branch pipe 12. When the four-way valve 2 is closed, the tap water only flows through the main pipe 11 to the branch pipe 12 to replenish the domestic water separately.

[0037] In a preferred embodiment, see [reference] Figure 1 , 3 It also includes a vertically installed buffer pipe 15, the diameter of which is larger than that of the main pipe 11, the branch pipe 12, and the water supply pipe 1. The lower end of the buffer pipe 15 is connected to the main pipe 11 and the branch pipe 12, and its upper end is connected to the water supply pipe 1. When the water supply program is started, the external water source is injected into the main pipe 11 at high speed. The buffer pipe 15, with the gravity buffer cavity formed by its vertical pipe section and the volume effect generated by the enlarged pipe diameter, actively absorbs the instantaneous flow fluctuations, reducing the water flow velocity entering the water supply pipe 1 by 62%-75%, thereby effectively eliminating the hydraulic shock caused to the heat pump cycle system during the water supply process and avoiding structural damage to the components in the heat pump cycle system.

[0038] In summary, this utility model constructs a closed-loop thermal circulation system by connecting the magnetic mud filter 3, the circulating pump 4, the heat pump 5, the domestic water tank 8, and the buffer water tank 9 in series. The system utilizes a four-way valve 2 and a water softener 7 to switch between water replenishment and cleaning modes. When the system needs water replenishment, tap water flows into the replenishment pipe 1 via the main pipe 11, controlling the four-way valve 2 to allow the tap water to flow directly into the return pipe 6 via the replenishment pipe 1, thus replenishing the circulating water. Simultaneously, tap water flows into the branch pipe 12 via the main pipe 11, replenishing the domestic water tank 81 with domestic water. The backflow preventer 14 prevents circulating water from flowing back into the branch pipe 12. When pipe cleaning is required, tap water flows into the water supply pipe 1 through the main pipe 11. The four-way valve 2 controls the tap water to first enter the tank 71 of the water softener 7. The dosing device 73 adds cleaning agent quantitatively through the metering valve 733. The stirring device 72 mixes the cleaning agent and the added water into a uniform mixture. This mixture flows into the heat pump circulation system through the return pipe 6. The cleaning agent dissolves the suspended impurities formed after dissolving the scale on the inner wall of the pipe, which are finally intercepted and discharged by the magnetic mud filter 3. This achieves simultaneous water replenishment and cleaning, completely eliminating the high-temperature and pressurized operation risks caused by manually opening the magnetic mud filter 3 to add cleaning agent, and improving work efficiency.

[0039] It is understood that those skilled in the art can make equivalent substitutions or changes based on the technical solution and inventive concept of this utility model, and all such substitutions or changes should fall within the protection scope of the appended claims of this utility model.

Claims

1. A heat pump circulation system for a hydraulic module, characterized in that, include: The water supply pipe (1), four-way valve (2), magnetic mud filter (3), circulation pump (4), heat pump (5) and water tank are connected in sequence along the pipeline; the water tank is provided with an inlet and an outlet, the outlet of the heat pump (5) is connected to the inlet of the water tank, the outlet of the water tank is connected to the magnetic mud filter (3) through the return water pipe (6), the water supply pipe (1) is connected to the return water pipe (6) through the four-way valve (2), the four-way valve (2) is connected to a water softener (7), the water softener (7) is used to add cleaning agent to the water flowing into the return water pipe (6); wherein, by controlling the four-way valve (2), the water in the water supply pipe (1) can selectively flow directly into the return water pipe (6), or flow into the return water pipe (6) after passing through the water softener (7).

2. The heat pump circulation system of the hydraulic module according to claim 1, characterized in that, The water softening device (7) includes a tank (71), a stirring device (72), and a dosing device (73). The stirring device (72) is located inside the tank (71). The tank (71) is provided with a medicine inlet (711), a water inlet pipe (712), and a medicine outlet pipe (713). The water inlet pipe (712) and the medicine outlet pipe (713) are connected to a four-way valve (2). The dosing device (73) includes a medicine tank (731), a dosing pipe (732), and a metering valve (733). The dosing pipe (732) connects the medicine tank (731) and the medicine inlet (711), and the metering valve (733) is located on the dosing pipe (732). The medicine outlet pipe (713) is provided with a first switching valve (714).

3. The heat pump circulation system of the hydraulic module according to claim 1, characterized in that, The water tank includes a domestic water tank (8), which includes a tank body (81) and a heat exchange tube (82) disposed in the tank body (81). The heat exchange tube (82) is provided with a first inlet (83) and a first outlet (84). The outlet of the circulating pump (4) is connected to the first inlet (83) through a pipe. The return water pipe (6) is provided with a first return water port (61), which is connected to the first outlet (84).

4. The heat pump circulation system of the hydraulic module according to claim 1, characterized in that, The water tank includes a buffer water tank (9), which includes a second inlet (91) and a second outlet (92). The outlet of the circulating pump (4) is connected to the second inlet (91) through a pipe. The return water pipe (6) is provided with a second return water port (62), which is connected to the second outlet (92).

5. The heat pump circulation system of the hydraulic module according to claim 3, characterized in that, The end of the water supply pipe (1) is connected to a main pipe (11) and a branch pipe (12). The main pipe (11) is connected to an external water supply source. The main pipe (11) is equipped with a second switch valve (13). The box (81) is equipped with a water inlet (85). The branch pipe (12) is connected to the water inlet (85).

6. The heat pump circulation system of the hydraulic module according to claim 5, characterized in that, The water supply pipe (1) is equipped with a backflow preventer (14), which is located between the four-way valve (2) and the branch pipe (12).

7. The heat pump circulation system of the hydraulic module according to claim 6, characterized in that, It also includes a vertically installed buffer pipe (15), the diameter of which is larger than that of the main pipe (11), the branch pipe (12) and the water supply pipe (1). The lower end of the buffer pipe (15) is connected to the main pipe (11) and the branch pipe (12), and its upper end is connected to the water supply pipe (1).

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