Heat pump structure with easy maintenance

Abstract

The utility model relates to heat pump technical field especially relates to a kind of heat pump structure convenient to maintain, including heat pump unit and water tank, compressor, liquid storage tank, four-way valve, plate heat exchanger and water tank are sequentially communicated to form refrigerant closed loop, the left side of casing is equipped with detachable access panel, liquid storage tank is set in the below of four-way valve, plate heat exchanger is set in the back side of liquid storage tank, by four-way valve is set in compressor close to the side of access panel, reduce the pipeline height of compressor, improve space utilization, by plate heat exchanger, four-way valve and micro-bubble exhaust valve and other vulnerable parts are centrally arranged in close to the side of access panel, improve the rationality of component arrangement, and then after the access panel is disassembled, it is convenient to overhaul and maintain plate heat exchanger, four-way valve and micro-bubble exhaust valve and other vulnerable parts, improve sound insulation effect by setting sound shield, micro-bubble exhaust valve is set on the outlet pipe of plate heat exchanger, can effectively prevent refrigerant leakage risk, improve heat pump system performance and security degree.

Description

Technical Field

[0001] This utility model relates to the field of heat pump technology, and in particular to a heat pump structure that is easy to maintain. Background Technology

[0002] A heat pump system is a device that absorbs heat from a low-temperature heat source and releases heat to a high-temperature heat source; it is a highly efficient and energy-saving heating device. A heat pump system includes an evaporator, compressor, heat exchanger (condenser), and water tank. The heat exchanger is connected to the evaporator and compressor via an external circulation pipeline, and also to the water tank via an internal circulation pipeline. When the heat pump system is working, the evaporator absorbs heat from the air, causing the heat transfer medium to evaporate into a gas. The gaseous heat transfer medium is compressed by the compressor, increasing its pressure and temperature. The high-temperature, high-pressure heat transfer medium exchanges heat with a low-temperature water medium in the heat exchanger. The heat transfer medium in the heat exchanger condenses into a liquid and is then transported back to the evaporator. The water in the heat exchanger is heated and then transported to the water tank.

[0003] The current heat pump casing has an unreasonable internal component layout. Vulnerable parts such as plate heat exchangers and four-way valves are concentrated on the side away from the access door, which is inconvenient for later maintenance and repair. Moreover, the compressor and other components inside the casing are prone to loud noise and have poor sound insulation. The four-way valve is usually located above the compressor, which puts the compressor piping at a high height, increases the space occupied by the overall layout, and reduces space utilization. In addition, in the existing heat pump system, dissolved refrigerant microbubbles, air, and impurities often appear in the water pipes at the outlet of the heat exchanger, which cannot effectively prevent the risk of refrigerant leakage. On the one hand, refrigerant microbubbles, air, and impurities circulate with the water flow in the water system, affecting the performance of the heat pump system. On the other hand, refrigerant microbubbles can enter the user's indoor environment with the water flow, posing a safety hazard to the user. Utility Model Content

[0004] In order to overcome the shortcomings of the existing technology, the purpose of this utility model is to provide a heat pump structure that is easy to maintain, with reasonable internal component arrangement, convenient inspection and maintenance, improved sound insulation, improved space utilization, and effective prevention of refrigerant leakage risk, thereby improving the performance and safety of the heat pump system.

[0005] The technical solution adopted in this utility model is as follows: A heat pump structure that is easy to maintain includes a heat pump unit and a water tank. The heat pump unit includes a casing and a compressor, a liquid receiver, a plate heat exchanger, and a four-way valve installed inside the casing. The compressor, liquid receiver, four-way valve, plate heat exchanger, and water tank are sequentially connected to form a refrigerant closed loop. A removable maintenance plate is provided on the left side of the casing. The four-way valve is located on the side of the compressor near the maintenance plate. The liquid receiver is located below the four-way valve. The plate heat exchanger is located behind the liquid receiver.

[0006] Preferably, the heat pump unit also includes a microbubble venting valve for collecting and discharging refrigerant gas in the water. The plate heat exchanger is connected to an inlet pipe and an outlet pipe, both of which are connected to a water tank. The microbubble venting valve is located on the outlet pipe and is positioned above the plate heat exchanger.

[0007] Preferably, the heat pump unit also includes a soundproof enclosure, which is installed inside the housing. The compressor, liquid receiver, four-way valve, microbubble exhaust valve and plate heat exchanger are all installed inside the soundproof enclosure, and a removable soundproof panel is provided on the left side of the soundproof enclosure.

[0008] Preferably, a screw is provided through the sound insulation panel, with a knob connected to one end of the screw near the inspection panel, and the other end of the screw is connected to the sound insulation cover by a thread. The side of the knob away from the inspection panel abuts against the sound insulation panel.

[0009] Preferably, the bottom of the inspection plate is provided with a fixing piece, and the side of the plate near the housing is provided with an L-shaped buckle. The side of the housing near the inspection plate is provided with a slot for locking. The L-shaped buckle is movably engaged with the slot for locking. The fixing piece is fixedly connected to the housing by a first screw.

[0010] Preferably, the heat pump unit also includes a shock absorption assembly, which includes a support plate and a first shock-absorbing rubber pad disposed at the bottom of the support plate. The first shock-absorbing rubber pad is fixed inside the housing, and the compressor, liquid storage tank and plate heat exchanger are all fixed on the support plate.

[0011] Preferably, a second shock-absorbing rubber pad is connected to the bottom of the compressor, and the second shock-absorbing rubber pad is fixed to the support plate.

[0012] Preferably, the first shock-absorbing rubber pad is detachably connected to the support plate by a second screw, and the second shock-absorbing rubber pad is detachably connected to the compressor by a third screw.

[0013] The beneficial effects of this utility model are as follows: This easy-to-maintain heat pump structure improves the rationality of component layout by centrally arranging vulnerable components such as plate heat exchangers, four-way valves, and microbubble vent valves on the side closest to the access panel. This facilitates the inspection and maintenance of vulnerable components such as plate heat exchangers, four-way valves, and microbubble vent valves after the access panel is removed. The sound insulation effect is improved by setting up a soundproof cover. The four-way valve is placed on the side of the compressor close to the access panel, reducing the height of the compressor piping and improving space utilization. The microbubble vent valve on the outlet pipe of the plate heat exchanger can effectively prevent the risk of refrigerant leakage, thereby improving the performance and safety of the heat pump system. Attached Figure Description

[0014] Figure 1 This is a three-dimensional schematic diagram of a heat pump structure.

[0015] Figure 2This is a schematic diagram showing the disassembly state of the inspection panel and the sound insulation panel.

[0016] Figure 3 for Figure 2 Enlarged diagram of point A in the middle.

[0017] Figure 4 This is an exploded view of the heat pump structure.

[0018] Figure 5 for Figure 4 Enlarged diagram of point B in the middle.

[0019] In the diagram: 1. Housing; 2. Compressor; 3. Liquid receiver; 4. Plate heat exchanger; 5. Four-way valve; 6. Inspection plate; 7. Microbubble exhaust valve; 8. Inlet pipe; 9. Outlet pipe; 10. Soundproof cover; 11. Soundproof panel; 12. Screw; 13. Knob; 14. Fixing plate; 15. L-shaped buckle; 16. Locking slot; 17. First screw; 18. Support plate; 19. First shock-absorbing rubber pad; 20. Second shock-absorbing rubber pad; 21. Second screw; 22. Third screw. Detailed Implementation

[0020] 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.

[0021] Please see Figures 1-5 This utility model provides a technical solution: a heat pump structure that is easy to maintain, including a heat pump unit and a water tank. The heat pump unit includes a casing 1 and a compressor 2, a liquid storage tank 3, a plate heat exchanger 4 and a four-way valve 5 installed in the casing 1. The compressor 2, the liquid storage tank 3, the four-way valve 5, the plate heat exchanger 4 and the water tank are connected in sequence to form a refrigerant closed loop. A detachable inspection plate 6 is provided on the left side of the casing 1. The four-way valve 5 is located on the side of the compressor 2 near the inspection plate 6. The liquid storage tank 3 is located below the four-way valve 5. The plate heat exchanger 4 is located on the rear side of the liquid storage tank 3. The water tank (not shown in the figure) is on the outside of the casing 1. By concentrating vulnerable components such as plate heat exchanger 4, four-way valve 5, and microbubble vent valve 7 on the side close to the maintenance plate 6, the rationality of component layout is improved. This facilitates the inspection and maintenance of vulnerable components such as plate heat exchanger 4, four-way valve 5, and microbubble vent valve 7 after disassembling the maintenance plate 6. The sound insulation effect is improved by setting a soundproof cover 10. The four-way valve 5 is placed on the side of compressor 2 close to the maintenance plate 6, reducing the height of the compressor's piping and improving space utilization. The microbubble vent valve 7 is installed on the outlet pipe 9 of plate heat exchanger 4, which can effectively prevent the risk of refrigerant leakage and improve the performance and safety of the heat pump system.

[0022] To facilitate the collection and discharge of refrigerant gas in the water and improve the performance and safety of the heat pump system, in this embodiment, preferably, the heat pump unit further includes a microbubble venting valve 7 for collecting and discharging refrigerant gas in the water. An inlet pipe 8 and an outlet pipe 9 are connected to the plate heat exchanger 4, both of which are connected to a water tank. The microbubble venting valve 7 is installed on the outlet pipe 9, positioned above the plate heat exchanger 4. The purpose of installing the microbubble venting valve 7 on the outlet pipe 9 is to collect and discharge refrigerant gas in the water when refrigerant microbubbles accumulate in the outlet pipe 9, effectively preventing the risk of refrigerant leakage and improving the performance and safety of the heat pump system.

[0023] To improve sound insulation, in this embodiment, preferably, the heat pump unit also includes a soundproof cover 10. The soundproof cover 10 is installed inside the housing 1. The compressor 2, liquid storage tank 3, four-way valve 5, microbubble exhaust valve 7, and plate heat exchanger 4 are all installed inside the soundproof cover 10. A detachable soundproof panel 11 is provided on the left side of the soundproof cover 10. The purpose is to surround the compressor 2, liquid storage tank 3, four-way valve 5, microbubble exhaust valve 7, and plate heat exchanger 4 with the soundproof cover 10 to improve the sound insulation effect. After removing the soundproof panel 11, the vulnerable parts such as the four-way valve 5, microbubble exhaust valve 7, and plate heat exchanger 4 can be directly exposed, which facilitates inspection and maintenance.

[0024] To facilitate the disassembly and installation of the sound insulation panel 11, in this embodiment, preferably, a screw 12 is provided through the sound insulation panel 11. A knob 13 is connected to one end of the screw 12 near the inspection plate 6, and the other end is threadedly connected to the sound insulation cover 10. The side of the knob 13 away from the inspection plate 6 abuts against the sound insulation panel 11. The purpose is to rotate the knob 13 to make the screw 12 threadedly connected or separated from the sound insulation cover 10, thereby realizing the quick disassembly and installation of the sound insulation panel 11, which facilitates the inspection and maintenance of internal components.

[0025] To facilitate the disassembly and installation of the inspection plate 6, in this embodiment, preferably, the bottom of the inspection plate 6 is provided with a fixing piece 14, and the side of the inspection plate 6 near the housing 1 is provided with an L-shaped buckle 15. The side of the housing 1 near the inspection plate 6 is provided with a slot 16. The L-shaped buckle 15 is movably engaged with the slot 16. The fixing piece 14 is fixedly connected to the housing 1 by a first screw 17. The purpose is that the slot 16 is set to be narrow at the top and wide at the bottom. After inserting the L-shaped buckle 15 into the slot 16, it is lifted upward to achieve the engagement of the L-shaped buckle 15 with the slot 16. At the same time, the L-shaped buckle 15 is fastened to the housing 1 to achieve the initial fixation of the inspection plate 6. Then, the fixing piece 14 is fixed to the housing 1 by the first screw 17 to achieve the firm installation of the inspection plate 6. When disassembling, first unscrew the first screw 17, and then move the inspection plate 6 downward to make the L-shaped buckle 15 disengage from the slot 16, and then the inspection plate 6 can be removed.

[0026] To improve the vibration damping effect, in this embodiment, preferably, the heat pump unit further includes a vibration damping component. The vibration damping component includes a support plate 18 and a first vibration damping rubber pad 19 disposed at the bottom of the support plate 18. The first vibration damping rubber pad 19 is fixed inside the housing 1. The compressor 2, the liquid storage tank 3, and the plate heat exchanger 4 are all fixed on the support plate 18. The purpose is to buffer and dampen the compressor 2, the liquid storage tank 3, and the plate heat exchanger 4 installed on the support plate 18 through the first vibration damping rubber pad 19, thereby improving the vibration damping effect.

[0027] To further improve the shock absorption effect, in this embodiment, preferably, a second shock-absorbing rubber pad 20 is connected to the bottom of the compressor 2. The second shock-absorbing rubber pad 20 is fixed on the support plate 18. The purpose is to further buffer and absorb the shock of the compressor 2 through the second shock-absorbing rubber pad 20, thereby improving the shock absorption effect.

[0028] To facilitate the disassembly of the support plate 18 and the compressor 2, in this embodiment, preferably, the first shock-absorbing rubber pad 19 is detachably connected to the support plate 18 by the second screw 21, and the second shock-absorbing rubber pad 20 is detachably connected to the compressor 2 by the third screw 22. The purpose is to separate the support plate 18 and the first shock-absorbing rubber pad 19 by removing the second screw 21, and to remove the compressor 2 for replacement by removing the third screw 22.

[0029] The working principle and usage process of this utility model are as follows: By disassembling the first screw 17, the inspection plate 6 is moved downwards, causing the L-shaped buckle 15 to disengage from the slot 16. The inspection plate 6 is then removed. Then, the knob 13 is rotated to separate the screw 12 from the soundproof cover 10. The soundproof plate 11 is then removed, directly exposing vulnerable parts such as the four-way valve 5, the microbubble venting valve 7, and the plate heat exchanger 4, facilitating inspection and maintenance. When refrigerant microbubbles accumulate in the outlet pipe 9, the refrigerant gas in the water is collected and discharged through the microbubble venting valve 7, effectively preventing the risk of refrigerant leakage and improving the performance and safety of the heat pump system.

[0030] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A heat pump structure that is easy to maintain, comprising a heat pump unit and a water tank, characterized in that: The heat pump unit includes a casing (1) and a compressor (2), a liquid storage tank (3), a plate heat exchanger (4), and a four-way valve (5) disposed within the casing (1). The compressor (2), the liquid storage tank (3), the four-way valve (5), the plate heat exchanger (4), and the water tank are sequentially connected to form a refrigerant closed loop. A detachable inspection plate (6) is provided on the left side of the casing (1). The four-way valve (5) is located on the side of the compressor (2) near the inspection plate (6). The liquid storage tank (3) is located below the four-way valve (5). The plate heat exchanger (4) is located behind the liquid storage tank (3).

2. The easy-to-maintain heat pump structure according to claim 1, characterized in that: The heat pump unit also includes a microbubble venting valve (7) for collecting and discharging refrigerant gas in the water. The plate heat exchanger (4) is connected to an inlet pipe (8) and an outlet pipe (9). Both the inlet pipe (8) and the outlet pipe (9) are connected to a water tank. The microbubble venting valve (7) is located on the outlet pipe (9) and is positioned above the plate heat exchanger (4).

3. The easy-to-maintain heat pump structure according to claim 2, characterized in that: The heat pump unit also includes a soundproof cover (10), which is located inside the casing (1). The compressor (2), liquid storage tank (3), four-way valve (5), microbubble exhaust valve (7) and plate heat exchanger (4) are all located inside the soundproof cover (10). A detachable soundproof panel (11) is provided on the left side of the soundproof cover (10).

4. The easy-to-maintain heat pump structure according to claim 3, characterized in that: A screw (12) is provided through the sound insulation plate (11). A knob (13) is connected to one end of the screw (12) near the inspection plate (6), and the other end is connected to the sound insulation cover (10) by a thread. The side of the knob (13) away from the inspection plate (6) abuts against the sound insulation plate (11).

5. The easy-to-maintain heat pump structure according to claim 1, characterized in that: The bottom of the inspection plate (6) is provided with a fixing piece (14), and an L-shaped buckle (15) is provided on the side of the plate near the housing (1). The side of the housing (1) near the inspection plate (6) is provided with a slot (16). The L-shaped buckle (15) is movably engaged with the slot (16). The fixing piece (14) is fixedly connected to the housing (1) by a first screw (17).

6. The easy-to-maintain heat pump structure according to claim 1, characterized in that: The heat pump unit also includes a shock-absorbing component, which includes a support plate (18) and a first shock-absorbing rubber pad (19) disposed at the bottom of the support plate (18). The first shock-absorbing rubber pad (19) is fixed inside the housing (1). The compressor (2), the liquid storage tank (3) and the plate heat exchanger (4) are all fixed on the support plate (18).

7. The easy-to-maintain heat pump structure according to claim 6, characterized in that: The compressor (2) is connected to a second shock-absorbing rubber pad (20) at its bottom, and the second shock-absorbing rubber pad (20) is fixed on the support plate (18).

8. The easy-to-maintain heat pump structure according to claim 7, characterized in that: The first shock-absorbing rubber pad (19) is detachably connected to the support plate (18) by the second screw (21), and the second shock-absorbing rubber pad (20) is detachably connected to the compressor (2) by the third screw (22).

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