Hydrokinetic heat pump with filter-type water reservoir

Abstract

This utility model discloses a filter-type water storage device for a fluid kinetic energy heat pump, belonging to the technical field of fluid kinetic energy heat pumps. It mainly includes a cold water tank, with a filter screen fixedly connected to the inner wall of the tank at one end, inclined downwards. A drain pipe is located at the downward-inclined end of the filter screen, communicating with the cold water tank. The upper surface of the downward-inclined end of the filter screen corresponds to the drain pipe. A cold water return pipe is located above the filter screen, and a sewage pipe is located at the lower part of the cold water tank. Both the sewage pipe and the cold water return pipe are connected to the cold water tank. This utility model, through the cooperation of the cold water return pipe and the inclined filter screen, achieves the circulating filtration of impurities in the circulating water during long-term operation. Furthermore, through the cooperation of the inclined filter screen and the tangential drain pipe, large particles of impurities are automatically slid down and efficiently discharged using gravity and centrifugal force.

Description

Technical Field

[0001] This utility model belongs to the field of fluid kinetic energy heat pump technology, and more specifically, it relates to a filter-type water storage device for fluid kinetic energy heat pumps. Background Technology

[0002] In a fluid kinetic energy heat pump system, the water storage device is an indispensable and important component, and its performance directly affects the operating efficiency and stability of the entire heat pump system. The fluid in the heat pump system is mainly circulating water. During the heating process of the circulating water in the heat pump system, calcium and magnesium ions in the water will undergo chemical reactions due to the increase in temperature, forming insoluble substances such as calcium carbonate and magnesium carbonate. In addition, as the circulating water enters the water supply pipe for circulation, some impurities will also be introduced during the return process. If these impurities are not cleaned in time, they will affect the heat exchange efficiency of the heat pump system.

[0003] Patent CN216481689U discloses a water filtration device for a ground source heat pump system, including an inlet tank and a filter box. An inlet pipe is located on the left side and near the top of the inlet tank, and a guide pipe is located at the bottom right side of the inlet tank. The output end of the guide pipe connects to the upper middle part of the left side of the filter box. A sealing cover is fitted onto the top of the filter box. A frame-shaped support plate is located inside the filter box near the bottom, with a filter groove supported on top of the frame-shaped support plate. An outlet pipe is located at the bottom of the filter box. By setting up the inlet tank to buffer the input water, and with the action of the motor, rotating shaft, connecting rod, and scraper, scale formation inside the inlet tank can be prevented. The filter groove inside the filter box filters the input water, preventing deposits from forming in the heat exchange pipes and ensuring the heat exchange rate of the pipes.

[0004] The above-mentioned device also has the following problems: 1. It is not suitable for fluid kinetic energy heat pumps. Fluid kinetic energy heat pumps have a complex and compact structure. A separate filter box is required, which takes up a lot of space and is costly, making it difficult to promote. 2. The above structure is only for single-pass water filtration and cannot solve the problem of impurity filtration and discharge during long-term operation of circulating water. 3. It cannot reasonably combine the hot water storage tank, water supply pipeline and water replenishment system, resulting in poor maintenance convenience. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a filter-type water storage device for a fluid kinetic energy heat pump. It realizes the circulation and filtration of impurities in the circulating water during long-term operation by cooperating with the cold water return pipe and the inclined filter screen. It also realizes the automatic sliding and efficient discharge of large particles of impurities by cooperating with the inclined filter screen and the tangential drain pipe, using gravity and centrifugal force.

[0006] The fluid kinetic energy heat pump filter-type water storage device includes a cold water tank. A filter screen with one end inclined downwards is fixedly connected to the inner wall of the cold water tank. A drain pipe is provided at the downward-inclined end of the filter screen, which is connected to the cold water tank. The upper end face of the downward-inclined end of the filter screen corresponds to the drain pipe. A cold water return pipe is provided at the upper part of the filter screen, and a sewage pipe is provided at the lower part of the cold water tank. Both the sewage pipe and the cold water return pipe are connected to the cold water tank.

[0007] Preferably, the drain pipe is arranged along the tangent direction of the side wall of the cold water tank, and the drain pipe and the filter screen are arranged opposite each other at the downward inclined end.

[0008] Preferably, a hot water tank is fixedly connected to the upper part of the cold water tank, and the hot water tank and the cold water tank are connected by a connecting pipe, which is equipped with a valve.

[0009] Preferably, the bottom of the cold water tank is connected to a connecting pipe, the connecting pipe is connected to the connecting pipe, a water supply pipe is connected to the connecting pipe, and a water supply control valve is provided on the water supply pipe.

[0010] Preferably, the connecting pipe is located on the side opposite to the drain pipe, and the connecting pipe is located at the bottom of the filter screen.

[0011] Preferably, an installation box is fixedly connected to the upper part of the hot water tank, and a main hot water supply pipe is fixedly connected inside the installation box. One side of the main hot water supply pipe is connected to a hot water supply main pipe, and the other side of the main hot water supply pipe is connected to at least one hot water supply branch pipe.

[0012] Preferably, the hot water tank is connected to a hot water outlet pipe and a hot water inlet pipe. The hot water outlet pipe is connected to a hot water supply branch pipe through a heat exchange component. An internal circulation pipe is connected to the connecting pipe, and the internal circulation pipe is connected to the hot water inlet pipe through a heating device.

[0013] Preferably, valve two is provided on the internal circulation pipeline.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. This utility model has a dual sewage discharge structure, which greatly improves the circulating water quality in the heat pump system. The inclined filter screen and the tangential sewage pipe work together to form the first sewage discharge structure, which uses gravity and centrifugal force to realize the automatic sliding and efficient discharge of impurities. The sewage pipe at the bottom of the cold water tank forms the second sewage discharge structure. The sewage pipe regularly discharges the bottom deposited impurities, forming a complementary sewage discharge system with the filter screen. Compared with traditional devices, it can reduce the amount of impurities remaining by more than 60%, effectively avoid filter screen clogging, and ensure long-term stable operation.

[0016] 2. By combining the cold water return pipe with the filter screen, the system achieves the filtration and timely discharge of impurities in the circulating water during long-term operation. The sewage discharge process relies on gravity and water vortex, eliminating the need for complex drive equipment. This simplifies the structure, reduces equipment failure rate, and decreases maintenance workload and costs. Furthermore, it is compatible with existing heat exchange components and heating devices in heat pump systems, and can be adapted to various methods such as electric heating, electromagnetic heating, and air source heat exchange. This facilitates technological upgrades and modifications, and has broad application prospects.

[0017] 3. The hot water tank and cold water tank adopt an upper and lower tank design, installed at one end of the heat pump system frame, occupying little space and not affecting the installation of other heat exchange components, effectively saving equipment installation space and facilitating system integration and maintenance; moreover, the cold water tank and hot water tank are connected by a connecting pipe and valve, and combined with the water replenishment pipeline, the water volume of the two tanks can be controlled as needed to achieve precise water replenishment. After sewage discharge, water can be quickly replenished to maintain the system water balance and improve water resource utilization. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the left side structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the right side structure of this utility model;

[0020] Figure 3 A schematic diagram showing the connection between the hot water supply branch pipe and the hot water supply main pipe;

[0021] Figure 4 This is a schematic diagram of the internal structure of the cold water tank;

[0022] Figure 5 This is a schematic diagram of the filter screen structure;

[0023] Figure 6 This is a reference diagram showing the usage state of this utility model.

[0024] In the diagram: 1. Hot water tank; 2. Installation box; 3. Hot water supply branch pipe; 301. Main pipe; 4. Hot water supply main pipe; 5. Cold water tank; 501. Filter screen; 6. Hot water outlet pipe; 7. Sewage pipe; 8. Cold water return pipe; 9. Sewage pipe; 10. Water supply pipe; 11. Connecting pipe; 12. Internal circulation pipeline; 13. Valve 1; 14. Valve 2; 15. Connecting pipe; 16. Hot water inlet pipe. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings:

[0026] The directional terms used in the detailed description paragraphs are only for the convenience of those skilled in the art to understand the technical solutions described in this application based on the visual orientation shown in the accompanying drawings. Unless otherwise expressly specified and limited, the terms "setting," "installation," "connection," etc., should be interpreted broadly, and those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0027] like Figures 1 to 5 As shown, a filter-type water storage device for a fluid kinetic energy heat pump includes a cold water tank 5. The cold water tank 5 is used to store return water after heat exchange or newly added clean water. A filter screen 501 with one end inclined downwards is fixedly connected to the inner wall of the cold water tank 5. Figure 4 and Figure 5 As shown, the filter screen 501 can adopt an arc-shaped transition slope or a straight slope structure; its slope angle can be reasonably adjusted according to the diameter of the cold water tank 5. The slope design of the filter screen 501 not only facilitates the intercepted impurities to slide down to one end (towards the drain pipe) under the action of gravity, making it easier for subsequent impurity collection and cleaning; it also creates a laminar flow effect when water flows through, reducing the adhesion rate of impurities on the surface of the filter screen 501, preventing impurities from clogging the filter screen 501 over time, and improving filtration efficiency. The downward sloped end of the filter screen 501 is equipped with a drain pipe 7, which is connected to the cold water tank 5, and the upper end face of the downward sloped end of the filter screen 501 corresponds to the drain pipe 7. Through the drain pipe 7, the sliding impurities can be cleaned out periodically without the need for other driving equipment, the structure is simple, and the cleaning efficiency is improved.

[0028] The upper part of the filter screen 501 is equipped with a cold water return pipe 8, which is used to recover the return water after heat exchange. During the return process, some impurities are introduced, so the return water can pass through the filter screen 501 before entering the cold water tank 5, preventing impurities from flowing into the heat pump system. The lower part of the cold water tank 5 is equipped with a sewage pipe 9, which is used to discharge sewage and sediment deposited at the bottom of the cold water tank 5. Both the sewage pipe 9 and the cold water return pipe 8 are connected to the cold water tank 5. The sewage pipe 9 and the drain pipe 7 form a complementary sewage discharge structure. The sewage pipe 9 is responsible for periodically discharging the sediment at the bottom of the cold water tank, while the drain pipe 7 focuses on timely removal of impurities intercepted on the filter screen 501. The combination of the two ensures that the water quality in the cold water tank 5 always maintains a high standard.

[0029] In this embodiment, the drain pipe 7 is preferably arranged along the tangential direction of the side wall of the cold water tank 5, and the drain pipe 7 is arranged opposite to the downward inclined end of the filter screen 501. When the drain valve is opened, the water flow forms a vortex at the drain pipe 7, which causes impurities to be thrown towards the pipe wall under the action of centrifugal force, accelerating the discharge and enhancing the discharge effect. This allows the impurities intercepted by the filter screen 501 to be discharged from the cold water tank 5 more effectively.

[0030] A hot water tank 1 is fixedly connected to the upper part of the cold water tank 5. The hot water tank 1 and the cold water tank 5 are connected by a connecting pipe 11, which is equipped with a valve 13. Valve 13 is an electric regulating valve. When valve 13 is closed, the water flow between the two tanks is cut off, facilitating the separate operation and management of the cold water tank 5 and the hot water tank 1. When valve 13 is opened, water from the hot water tank 1 can flow into the cold water tank 5, enabling water flow between the two tanks and replenishing the cold water tank 5 with water. A connecting pipe 15 is connected to the bottom of the cold water tank 5, and the connecting pipe 15 is connected to the connecting pipe 11. A water supply pipe 10 is connected to the connecting pipe 15, and a water supply control valve is installed on the water supply pipe 10. When the sewage is drained and the water volume in the system is insufficient, the water supply control valve is opened, and water is replenished into the cold water tank 5 through the water supply pipe 10. At this time, by controlling the opening and closing of valve 13, water can be selectively replenished into the hot water tank 1. The connecting pipe 15 is located on the side opposite to the drain pipe 7 and at the bottom of the filter screen 501. Since the water replenishment is clean water, it does not need to be filtered through the filter screen 501 before entering the system circulation. This avoids water flow interference with impurities on the upper part of the filter screen 501 during water replenishment, which would cause some impurities to be washed down and affect the water quality.

[0031] A mounting box 2 is fixedly connected to the upper part of the hot water tank 1. A main pipe 301 is fixedly connected inside the mounting box 2. A hot water supply main pipe 4 is connected to one side of the main pipe 301. When in use, the hot water supply main pipe 4 is connected to the heating system. At least one hot water supply branch pipe 3 is connected to the other side of the main pipe 301. The hot water supply branch pipe 3 is used to collect the hot water after heat exchange in the heat pump system.

[0032] The hot water tank 1 is connected to a hot water outlet pipe 6 and a hot water inlet pipe 16. The hot water outlet pipe 6 is connected to the hot water supply branch pipe 3 through the heat exchange components of the heat pump system. An internal circulation pipe 12 is connected to the connecting pipe 15. A valve 14 is installed on the internal circulation pipe 12. The internal circulation pipe 12 is connected to the hot water inlet pipe 16 through a heating device. The heat exchange components and heating device are existing technologies and can be electric heating devices, electromagnetic heating devices, or existing air source heat exchange devices.

[0033] like Figure 6As shown, this utility model is used in conjunction with a heat pump system. Installed at one end of the heat pump system frame, it occupies little space and does not affect the installation of other heat exchange components. During operation, the cold water tank 5 is connected to the return water pipe of the heat exchange system via the cold water return pipe 8. When cold water enters the cold water tank 5 from the cold water return pipe 8, the water flow speed is controlled within a suitable range. Impurities carried in the water are intercepted on the surface of the filter screen 501 due to gravity and water flow inertia, while clean cold water continues to flow downwards through the pores of the filter screen 501 under the drive of pressure difference, entering the lower part of the cold water tank 5. As impurities accumulate, they slide along the inclined filter screen 501 towards the drain pipe 7 under gravity, creating favorable conditions for drainage. During drainage, the drain pipe valve is opened, and the water flow in the cold water tank 5 forms a high-speed rotating flow. Impurities are thrown against the wall of the drain pipe 7 under centrifugal force and are quickly discharged with the water flow. Compared to traditional direct discharge, tangential discharge more efficiently removes impurities trapped by filter 501, effectively reducing impurities remaining in the cold water tank 5, ensuring the filtration effect of filter 501, and maintaining the cleanliness of the water in the cold water tank 5. Fine impurities will settle at the bottom of the cold water tank 5 due to gravity. Wastewater pipe 9 is used to periodically discharge these settled wastewater and impurities, further ensuring the water quality in the cold water tank. After the sediment is discharged, water is replenished promptly through water supply pipe 10 to maintain the water balance within the heat pump system. When the heat pump system is working, the filtered water in the cold water tank 5 enters the internal circulation pipe 12 through the connecting pipe 15. After being heated by the heating device of the heat pump system, it enters the hot water tank 1 through the hot water inlet pipe 16 for storage. When heating is needed, the hot water in the hot water tank 1 flows out from the hot water outlet pipe 6. After heat exchange by the heat exchange components, it is further heated. The heated hot water enters the hot water supply branch pipe 3, and then enters the collection pipe 301 through multiple hot water supply branch pipes 3. Finally, it is transported to the heating system through the hot water supply main pipe 4, realizing the circulation supply of hot water. After heat exchange in the heating system, the hot water becomes cold water and then returns to the cold water tank 1 for filtration through the cold water return pipe 8. This cycle is repeated to achieve the long-term operation of the circulating water, filtering and timely discharge of impurities.

[0034] Finally, although this specification describes embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A filter-type water storage device for a fluid kinetic energy heat pump, characterized in that: Includes a cold water tank (5), and a filter screen (501) with one end inclined downward is fixedly connected to the inner wall of the cold water tank (5). The downward inclined end of the filter screen (501) is provided with a drain pipe (7), which is connected to the cold water tank (5). The upper end of the downward inclined end of the filter screen (501) corresponds to the drain pipe (7). The upper part of the filter screen (501) is provided with a cold water return pipe (8), and the lower part of the cold water tank (5) is provided with a sewage pipe (9). Both the sewage pipe (9) and the cold water return pipe (8) are connected to the cold water tank (5).

2. The filter-type water storage device for a fluid kinetic energy heat pump according to claim 1, characterized in that: The drain pipe (7) is arranged along the tangent direction of the side wall of the cold water tank (5), and the drain pipe (7) and the filter screen (501) are arranged opposite each other at the downward inclined end.

3. The filter-type water storage device for a fluid kinetic energy heat pump according to claim 1 or 2, characterized in that: A hot water tank (1) is fixedly connected to the upper part of the cold water tank (5). The hot water tank (1) and the cold water tank (5) are connected by a connecting pipe (11). A valve (13) is provided on the connecting pipe (11).

4. The filter-type water storage device for a fluid kinetic energy heat pump according to claim 3, characterized in that: The bottom of the cold water tank (5) is connected to a connecting pipe (15), which is connected to the connecting pipe (11). A water supply pipe (10) is connected to the connecting pipe (15), and a water supply control valve is provided on the water supply pipe (10).

5. The filter-type water storage device for a fluid kinetic energy heat pump according to claim 4, characterized in that: The connecting pipe (15) is located on the side opposite to the drain pipe (7), and the connecting pipe (15) is located at the bottom of the filter screen (501).

6. The filter-type water storage device for a fluid kinetic energy heat pump according to claim 4, characterized in that: The hot water tank (1) is fixedly connected to an installation box (2), and a main pipe (301) is fixedly connected inside the installation box (2). A hot water supply main pipe (4) is connected to one side of the main pipe (301), and at least one hot water supply branch pipe (3) is connected to the other side of the main pipe (301).

7. The filter-type water storage device for a fluid kinetic energy heat pump according to claim 6, characterized in that: The hot water tank (1) is connected to a hot water outlet pipe (6) and a hot water inlet pipe (16). The hot water outlet pipe (6) is connected to the hot water supply branch pipe (3) through a heat exchange component. An internal circulation pipe (12) is connected to the connecting pipe (15). The internal circulation pipe (12) is connected to the hot water inlet pipe (16) through a heating device.

8. The filter-type water storage device for a fluid kinetic energy heat pump according to claim 7, characterized in that: Valve 2 (14) is provided on the internal circulation pipeline (12).

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