A valve for controlling water quantity of a heat pump unit

Abstract

The utility model relates to heat pump unit technical field provides a valve that heat pump unit controls water quantity, when fan -coil is normal use, switching valve core can control first flow passage and second flow passage intercommunication, such water medium can flow into fan -coil like this, when fan -coil is not used, switching valve core can control first flow passage and bypass, make water medium not flow into fan -coil. Because the flow control assembly is provided in bypass flow passage, therefore, when water medium flows into bypass flow passage, can pass through the handle of rotation operation, make movable valve relative fixed valve rotate, change the overlapping degree between second through -hole and first through -hole to change the flow of water medium through first through -hole and second through -hole. This is convenient for reducing the water quantity in bypass flow passage, is favorable to increasing the water pressure and water quantity in other fan -coil, thereby guaranteeing the water flow of normal use's fan -coil and keeping stable, improve the stability of heat pump.

Description

Technical Field

[0001] This utility model belongs to the technical field of heat pump units, and in particular relates to a valve for controlling the water volume of a heat pump unit. Background Technology

[0002] A heat pump is a highly efficient and energy-saving device that makes full use of low-grade heat energy. It is a mechanical device that forces heat to flow from a low-temperature object to a high-temperature object in a reverse circulation manner. It can effectively utilize low-grade heat energy that is difficult to apply to achieve the purpose of energy saving, such as ground source heat pumps.

[0003] In the heating process, heat pumps typically use a piping system to connect multiple fan coil units, allowing hot water or cooling water to be circulated into each fan coil unit for heat exchange, thereby achieving the function of heating or blowing cool air. To prevent hot water or cooling water from still flowing into a single fan coil unit when it is not in use, a bypass valve is usually installed at the fan coil unit. When the fan coil unit is not in use, the bypass valve can be closed, allowing hot water or cooling water to bypass its passage.

[0004] However, the bypass valve of a traditional heat pump unit cannot regulate the water flow in the bypass, resulting in the water flow in the bypass being the normal flow, which more or less affects the water flow in the fan coil unit during normal operation. Utility Model Content

[0005] Based on the above background, the purpose of this utility model is to provide a valve for controlling the water volume of a heat pump unit, which can adjust the water volume in the bypass of unused fan coil units, so as to ensure that the water flow rate of the normally used fan coil units remains stable and improve the stability of the heat pump.

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

[0007] A valve for controlling water flow in a heat pump unit includes: a valve body comprising a first flow channel, a second flow channel, a switching chamber, a bypass flow channel, a third flow channel, and a fourth flow channel, wherein the first flow channel, the second flow channel, and the bypass flow channel are alternately connected to the switching chamber, and the third flow channel and the fourth flow channel are both connected to the bypass flow channel; the second flow channel and the third flow channel are respectively used to connect to the inlet and outlet ends of a fan coil unit; a switching valve core disposed in the switching chamber for controlling the first flow channel to selectively connect with the second flow channel and the bypass flow channel; and a flow control component disposed in the bypass flow channel for adjusting the water flow in the bypass flow channel; wherein the flow control component includes an operating handle, a fixed valve, and a movable valve, the fixed valve being fixed in the bypass flow channel and having a first through hole thereon, the movable valve being rotatably fitted onto the fixed valve and having a second through hole thereon, the operating handle being located outside the valve body and connected to the movable valve, and the operating handle being able to adjust the overlap between the first through hole and the second through hole when rotated.

[0008] Furthermore, there are multiple first through holes and multiple second through holes, and they are arranged one-to-one, with all the first through holes distributed at intervals along the circumference of the fixed valve.

[0009] Furthermore, the valve body is provided with a movable hole communicating with the bypass flow channel, and the operating handle is provided with a first arc-shaped limiting plate. The operating handle is connected to the movable valve through the movable hole, and the first arc-shaped limiting plate is located in the bypass flow channel and is sealed to the outer periphery of the movable hole.

[0010] Furthermore, a sealing ring is provided around the outer periphery of the movable hole, and the sealing ring abuts against the first arc-shaped limiting plate.

[0011] Furthermore, the operating handle is also provided with a second arc-shaped limiting plate, which is spaced apart from the first arc-shaped limiting plate and located outside the movable hole. The second arc-shaped limiting plate abuts against the outer wall of the bypass channel.

[0012] Furthermore, the valve body also includes a first positioning ring and a second positioning ring, which are spaced apart on the inner wall of the bypass channel. The fixed valve and the movable valve are both located between the first positioning ring and the second positioning ring.

[0013] Furthermore, it also includes a one-way valve, which is located in the third flow channel and is used to control water to flow unidirectionally from the third flow channel into the fourth flow channel.

[0014] Furthermore, the one-way valve includes a fixed seat and a one-way valve. The fixed seat is disposed in the third flow channel and has a through hole thereon. One end of the one-way valve is movably disposed on the side of the fixed seat facing the fourth flow channel. The one-way valve is used to cover or open the through hole.

[0015] Furthermore, the switching valve core is provided with a first switching channel and a second switching channel that are interconnected and form an angle. When the first switching channel is connected to the first flow channel, the second switching channel is connected to the second flow channel. When the first switching channel is connected to the bypass flow channel, the second switching channel is connected to the first flow channel.

[0016] Furthermore, it also includes a motor, the output end of which passes through the valve body and is connected to the switching valve core.

[0017] This utility model has the following beneficial effects:

[0018] (1) When the fan coil unit is in normal use, the switching valve core can control the connection between the first flow channel and the second flow channel, allowing water to flow into the fan coil unit. When the fan coil unit is not in use, the switching valve core can control the first flow channel to bypass, preventing water from flowing into the fan coil unit. Since a flow control component is installed in the bypass flow channel, when water flows into the bypass flow channel, the operating handle can be rotated to make the movable valve rotate relative to the fixed valve, changing the overlap between the second and first through holes, thereby changing the flow rate of water through the first and second through holes. This helps to reduce the amount of water in the bypass flow channel, which is beneficial to increasing the water pressure and flow rate in other fan coil units, thus ensuring that the water flow rate in the normally used fan coil units remains stable and improving the stability of the heat pump.

[0019] (2) An movable hole is provided on the valve body to facilitate the rotation of the operating handle, thereby changing the degree of overlap between the first through hole and the second through hole and changing the water volume; at the same time, a first arc-shaped limiting plate is sealed on the inner side of the movable hole. In this way, when the operating handle is effectively rotated, the first arc-shaped limiting plate closes the movable hole, preventing the water medium in the bypass channel from leaking from the movable hole and improving the sealing performance of the valve.

[0020] (3) A first arc-shaped limiting plate and a second arc-shaped limiting plate are provided at intervals on the operating handle to ensure that the operating handle is stably rotated and installed on the valve body; at the same time, double-layer sealing can be achieved to further improve the sealing performance in the bypass flow channel.

[0021] (4) When the switching valve core controls the connection between the first and second flow channels, the water medium flows from the first and second flow channels into the fan coil unit; then it flows out from the fan coil unit through the third flow channel and is discharged from the fourth flow channel through the check valve. When the switching valve core controls the connection between the first flow channel and the bypass flow channel, the water medium flows from the first flow channel into the bypass flow channel. Because a check valve is installed in the third flow channel, the water medium will not flow into the third flow channel, but will flow into the fourth flow channel and be discharged from there. In this way, the stable operation of the valve is ensured. Attached Figure Description

[0022] Figure 1 This is a diagram showing the assembly of the heat pump unit, valves, and fan coil units as described in one embodiment.

[0023] Figure 2 This is a perspective view of the structure of the valve described in one embodiment.

[0024] Figure 3 This is another perspective view of the valve structure described in one embodiment.

[0025] Figure 4 for Figure 3 A cross-sectional view of the structure along the AA direction.

[0026] Figure 5 This is a schematic diagram of the internal structure of the bypass valve as described in one embodiment.

[0027] Figure 6 This is a schematic diagram of the internal structure of the valve body described in one embodiment.

[0028] Figure 7 This is a schematic diagram of the structure of a fixed valve as described in one embodiment.

[0029] Figure 8 This is a schematic diagram of the structure of the movable valve described in one embodiment.

[0030] Explanation of icon numbers:

[0031] 10. Valve body; 11. First flow channel; 12. Second flow channel; 13. Switching chamber; 14. Bypass flow channel; 15. Third flow channel; 16. Fourth flow channel; 17. Movable hole; 18. Sealing ring; 20. Switching valve core; 21. First switching channel; 22. Second switching channel; 23. Motor; 30. Flow control assembly; 31. Fixed valve; 311. First through hole; 32. Movable valve; 321. Second through hole; 33. Operating handle; 34. First arc-shaped limiting plate; 35. Second arc-shaped limiting plate; 40. Check valve; 41. Fixed seat; 42. Perforation; 43. Check valve; 50. Fan coil unit; 60. Heat pump unit; 70. First positioning ring; 71. Second positioning ring. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0034] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0035] In one embodiment, please refer to Figures 1 to 8 This application provides a valve for controlling water volume in a heat pump unit, comprising: a valve body 10, including a first flow channel 11, a second flow channel 12, a switching chamber 13, a bypass flow channel 14, a third flow channel 15, and a fourth flow channel 16; the first flow channel 11, the second flow channel 12, and the bypass flow channel 14 are spaced apart and connected to the switching chamber 13; the third flow channel 15 and the fourth flow channel 16 are both connected to the bypass flow channel 14; the second flow channel 12 and the third flow channel 15 are respectively used to connect to the inlet and outlet ends of a fan coil unit 50; and a switching valve core 20, disposed in the switching chamber 13, for controlling the selective connection between the first flow channel 11 and the second flow channel 12, the bypass flow channel 14, the bypass flow channel 15, and the bypass flow channel 16. The bypass channel 14 is connected; the flow control component 30 is located in the bypass channel 14 and is used to regulate the water volume in the bypass channel 14; wherein, the flow control component 30 includes an operating handle 33, a fixed valve 31 and a movable valve 32, the fixed valve 31 is fixed in the bypass channel 14 and has a first through hole 311 thereon, the movable valve 32 rotates and fits against the fixed valve 31, the movable valve 32 has a second through hole 321, the operating handle 33 is located outside the valve body 10 and connected to the movable valve 32, and when the operating handle 33 rotates, it can adjust the degree of overlap between the first through hole 311 and the second through hole 321.

[0036] The valve controlling the water flow in the aforementioned heat pump unit allows water to flow into the fan coil unit 50 when the fan coil unit 50 is in normal use. When the fan coil unit 50 is not in use, the valve core 20 controls the first flow channel 11 to connect with the second flow channel 12, preventing water from flowing into the fan coil unit 50. Since the bypass flow channel 14 is equipped with a flow control component 30, when water flows into the bypass flow channel 14, the operating handle 33 can be rotated to rotate the movable valve 32 relative to the fixed valve 31, changing the overlap between the second through-hole 321 and the first through-hole 311, thereby altering the flow rate of water through the first through-hole 311 and the second through-hole 321. This reduces the water volume in the bypass flow channel 14, which helps increase the water pressure and flow rate in other fan coil units 50, ensuring a stable water flow rate in the normally used fan coil units 50 and improving the stability of the heat pump.

[0037] It should be explained that both the movable valve 32 and the fixed valve 31 can be circular plate structures. The first through hole 311 is located on the plate surface of the fixed valve 31, and the second through hole 321 is located on the plate surface of the movable valve 32. When the first through hole 311 and the second through hole 321 are completely aligned, the overlap between them is at its maximum, and the water flow through the flow control component 30 is at its maximum. When the operating handle 33 is rotated, and the first through hole 311 and the second through hole 321 are misaligned, the overlap between them decreases. If the first through hole 311 and the second through hole 321 are completely misaligned, the overlap between them is at its minimum, and the water flow cannot pass through the flow control component 30.

[0038] The rotating connection between the movable valve 32 and the fixed valve 31 can be achieved by setting a rotating shaft at the center of the fixed valve 31 and setting a shaft hole at the center of the movable valve 32, with the rotating shaft rotatably fixed in the shaft hole.

[0039] In addition, the fourth flow channel 16 can be connected to the piping system, so that when the bypass connection is made, the water medium can flow back to the piping system and then back to the heat pump unit 60.

[0040] Further, please refer to Figure 7 and Figure 8 There are multiple first through holes 311 and multiple second through holes 321, and they are arranged in a one-to-one manner. All the first through holes 311 are distributed at intervals along the circumference of the fixed valve 31. It can be seen that by the one-to-one cooperation between multiple first through holes 311 and multiple second through holes 321, the water flow distribution of the flow control component 30 is more uniform, and the water flow in the bypass channel 14 is more stable and uniform.

[0041] The number of first through holes 311 and second through holes 321 can be two, three, four or more. In one specific embodiment, the number of first through holes 311 and second through holes 321 is three, and they are evenly distributed along the circumferential direction.

[0042] Further, please refer to Figures 6 to 8 The valve body 10 is provided with a movable hole 17 communicating with the bypass channel 14. The operating handle 33 is provided with a first arc-shaped limiting plate 34. The operating handle 33 is connected to the movable valve 32 through the movable hole 17. The first arc-shaped limiting plate 34 is located inside the bypass channel 14 and is sealed to the outer periphery of the movable hole 17. It can be seen that the movable hole 17 on the valve body 10 facilitates the rotation of the operating handle 33, thereby changing the degree of overlap between the first through hole 311 and the second through hole 321, and changing the water flow. At the same time, the first arc-shaped limiting plate 34 is sealed to the inside of the movable hole 17. Thus, when the operating handle 33 is effectively rotated, the first arc-shaped limiting plate 34 closes the movable hole 17, preventing water medium in the bypass channel 14 from leaking out of the movable hole 17, thereby improving the sealing performance of the valve.

[0043] It should be explained that the shape of the movable hole 17 can be designed in various ways, as long as it allows the operating handle 33 to rotate around the circumference of the valve body 10. For example, the shape of the movable hole 17 can be an arc-shaped square hole, etc.

[0044] In one embodiment, please refer to Figures 6 to 8 A sealing ring 18 is provided around the outer periphery of the movable hole 17, and the sealing ring 18 abuts against the first arc-shaped limiting plate 34. In this way, the sealing ring 18 ensures that the first arc-shaped limiting plate 34 fits tightly against the inner side of the movable hole 17, which helps to improve the sealing performance of the valve.

[0045] The sealing ring 18 may be, but is not limited to, a rubber sealing ring 18.

[0046] In one embodiment, please refer to Figures 6 to 8 The operating handle 33 is also provided with a second arc-shaped limiting plate 35, which is spaced apart from the first arc-shaped limiting plate 34 and located outside the movable hole 17. The second arc-shaped limiting plate 35 abuts against the outer wall of the bypass channel 14. It can be seen that the first arc-shaped limiting plate 34 and the second arc-shaped limiting plate 35 are provided on the operating handle 33 at intervals to ensure that the operating handle 33 is stably rotated and installed on the valve body 10; at the same time, it can also achieve double-layer sealing and further improve the sealing performance in the bypass channel 14.

[0047] It should be explained that the connection method between the first arc-shaped limiting plate 34 and the second arc-shaped limiting plate 35 on the operating handle 33 can be, but is not limited to, bolt connection, adhesive bonding, snap-fit ​​connection, etc. Of course, the first arc-shaped limiting plate 34 and the second arc-shaped limiting plate 35 can also be an integral structure with the operating handle 33.

[0048] Further, please refer to Figures 6 to 8 The valve body 10 also includes a first positioning ring 70 and a second positioning ring 71, which are spaced apart on the inner wall of the bypass channel 14. The fixed valve 31 and the movable valve 32 are both located between the first positioning ring 70 and the second positioning ring 71. Thus, the first positioning ring 70 and the second positioning ring 71 ensure that the fixed valve 31 and the movable valve 32 are stably installed in the bypass channel 14, facilitating stable water flow control by the flow control assembly 30.

[0049] The first positioning ring 70 and the second positioning ring 71 can be installed on the inner wall of the bypass channel 14 by means of threaded connection, snap-fit, welding or integral molding.

[0050] In one embodiment, please refer to Figures 4 to 6 It also includes a one-way valve 40, which is located in the third flow channel 15 and is used to control the unidirectional flow of water from the third flow channel 15 to the fourth flow channel 16. It can be seen that when the switching valve core 20 controls the connection between the first flow channel 11 and the second flow channel 12, the water medium flows from the first flow channel 11 and the second flow channel 12 into the fan coil unit 50; then it flows out from the fan coil unit 50 from the third flow channel 15 and is discharged from the fourth flow channel 16 through the one-way valve 40. When the switching valve core 20 controls the connection between the first flow channel 11 and the bypass flow channel 14, the water medium flows from the first flow channel 11 into the bypass flow channel 14. Because the one-way valve 40 is installed in the third flow channel 15, the water medium will not flow into the third flow channel 15, but will flow into the fourth flow channel 16 and be discharged therefrom. This ensures stable valve operation.

[0051] Further, please refer to Figures 4 to 6 The one-way valve 40 includes a fixed base 41 and a one-way valve 43. The fixed base 41 is located within the third flow channel 15 and has a through hole 42. One end of the one-way valve 43 is movably located on the side of the fixed base 41 facing the fourth flow channel 16. The one-way valve 43 is used to cover or open the through hole 42. It can be seen that when the first flow channel 11 is connected to the second flow channel 12, water can flow into the fan coil unit 50; then, it flows out from the third flow channel 15. At this time, the water flows through the through hole 42 and pushes open the one-way valve 43, opening the through hole 42, allowing the water to flow into the fourth flow channel 16. When the first flow channel 11 is connected to the bypass flow channel 14, the water does not flow into the fan coil unit 50 but flows into the bypass flow channel 14, pushing the one-way valve 43 to fit more closely to the fixed base 41 and closing the through hole 42. At this time, the water only flows into the fourth flow channel 16.

[0052] It should be noted that the one-way valve 43 can be, but is not limited to, a plastic sheet, a rubber sheet, etc. One end of the one-way valve 43 can be fixed to the mounting base 41 by means of snap-fit, adhesive, bolt connection, etc.

[0053] In one embodiment, please refer to Figure 4 and Figure 5 The switching valve core 20 is provided with a first switching channel 21 and a second switching channel 22 that are interconnected and form an angle. When the first switching channel 21 is connected to the first flow channel 11, the second switching channel 22 is connected to the second flow channel 12. When the first switching channel 21 is connected to the bypass flow channel 14, the second switching channel 22 is connected to the first flow channel 11.

[0054] Further, please refer to Figures 2 to 4 It also includes a motor 23, the output end of which passes through the valve body 10 and is connected to the switching valve core 20. In this way, automatic switching between flow channels is achieved.

[0055] Of course, the above description is not intended to limit the present utility model, and the present utility model is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present utility model should also fall within the protection scope of the present utility model.

Claims

1. A valve for controlling water volume in a heat pump unit, characterized in that, include: The valve body (10) includes a first flow channel (11), a second flow channel (12), a switching chamber (13), a bypass flow channel (14), a third flow channel (15), and a fourth flow channel (16). The first flow channel (11), the second flow channel (12), and the bypass flow channel (14) are connected to the switching chamber (13) at intervals. The third flow channel (15) and the fourth flow channel (16) are both connected to the bypass flow channel (14). The second flow channel (12) and the third flow channel (15) are respectively used to connect to the inlet end and the outlet end of the fan coil unit (50). A switching valve core (20) is disposed in the switching chamber (13) and is used to control the first flow channel (11) to selectively communicate with the second flow channel (12) and the bypass flow channel (14); A flow control component (30) is provided in the bypass channel (14) for regulating the amount of water in the bypass channel (14); The flow control component (30) includes an operating handle (33), a fixed valve (31), and a movable valve (32). The fixed valve (31) is fixed in the bypass channel (14) and has a first through hole (311). The movable valve (32) rotates and fits against the fixed valve (31). The movable valve (32) has a second through hole (321). The operating handle (33) is located outside the valve body (10) and connected to the movable valve (32). When the operating handle (33) rotates, it can adjust the degree of overlap between the first through hole (311) and the second through hole (321).

2. The valve for controlling water volume in a heat pump unit according to claim 1, characterized in that, There are multiple first through holes (311) and second through holes (321), and they are arranged one-to-one. All the first through holes (311) are distributed at intervals along the circumference of the fixed valve (31).

3. The valve for controlling water volume in a heat pump unit according to claim 1, characterized in that, The valve body (10) is provided with a movable hole (17) communicating with the bypass channel (14), and the operating handle (33) is provided with a first arc-shaped limiting plate (34). The operating handle (33) is connected to the movable valve (32) through the movable hole (17). The first arc-shaped limiting plate (34) is located in the bypass channel (14) and is sealed to the outer periphery of the movable hole (17).

4. The valve for controlling water volume in a heat pump unit according to claim 3, characterized in that, The outer periphery of the movable hole (17) is provided with a sealing ring (18), which abuts against the first arc-shaped limiting plate (34).

5. A valve for controlling water volume in a heat pump unit according to claim 3, characterized in that, The operating handle (33) is also provided with a second arc-shaped limiting plate (35), which is spaced apart from the first arc-shaped limiting plate (34) and located outside the movable hole (17). The second arc-shaped limiting plate (35) abuts against the outer wall of the bypass channel (14).

6. A valve for controlling water volume in a heat pump unit according to claim 1, characterized in that, The valve body (10) further includes a first positioning ring (70) and a second positioning ring (71), the first positioning ring (70) and the second positioning ring (71) being spaced apart on the inner wall of the bypass channel (14), and the fixed valve (31) and the movable valve (32) being located between the first positioning ring (70) and the second positioning ring (71).

7. A valve for controlling water volume in a heat pump unit according to any one of claims 1-6, characterized in that, It also includes a one-way valve (40), which is located in the third flow channel (15) and is used to control water to flow unidirectionally from the third flow channel (15) into the fourth flow channel (16).

8. A valve for controlling water volume in a heat pump unit according to claim 7, characterized in that, The one-way valve (40) includes a fixed seat (41) and a one-way valve (40) gate. The fixed seat (41) is located in the third flow channel (15) and has a through hole (42). One end of the one-way valve (40) gate is movably located on the side of the fixed seat (41) facing the fourth flow channel (16). The one-way valve (40) gate is used to cover or open the through hole (42).

9. A valve for controlling water volume in a heat pump unit according to any one of claims 1-6, characterized in that, The switching valve core (20) is provided with a first switching channel (21) and a second switching channel (22) that are interconnected and form an angle. When the first switching channel (21) is connected to the first flow channel (11), the second switching channel (22) is connected to the second flow channel (12). When the first switching channel (21) is connected to the bypass flow channel (14), the second switching channel (22) is connected to the first flow channel (11).

10. A valve for controlling water volume in a heat pump unit according to claim 9, characterized in that, It also includes a motor (23), the output end of which passes through the valve body (10) and is connected to the switching valve core (20).

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