Heat pump device

Abstract

The utility model relates to the technical field of heat pumps, and discloses a heat pump device which is characterized in that when refrigerant leakage occurs in the heat pump device, after a maintainer maintains a refrigerant circulating pipeline, a standby refrigerant filling valve is opened, and refrigerant in a standby refrigerant storage tank is injected into the refrigerant circulating pipeline; and the standby refrigerant filling valve is closed when the refrigerant is injected completely. Maintenance personnel do not need to take and purchase the refrigerant, refrigerant filling is convenient, and refrigerant filling efficiency is high.

Description

Technical Field

[0001] The utility model relates to the technical field of heat pumps, in particular to a heat pump device. Background Art

[0002] At present, heat pumps are increasingly widely used. Refrigerant leakage may occur during the actual use of heat pumps. In this case, maintenance personnel will find the leak point after the refrigerant has leaked, and then refill the refrigerant. Maintenance personnel need to carry refrigerant and connect the refrigerant container to the heat pump device to fill the refrigerant, and then remove the refrigerant container. The refrigerant filling is cumbersome and inefficient.

[0003] Therefore, a heat pump device is urgently needed to solve the above technical problems. Utility Model Content

[0004] One of the technical problems solved by the utility model is to provide a heat pump device which can improve the convenience and efficiency of refrigerant filling.

[0005] The first technical problem mentioned above is solved by the following technical solution:

[0006] A heat pump device, comprising:

[0007] Refrigerant circulation pipeline;

[0008] A refrigerant filling valve, wherein the refrigerant filling valve is arranged on the refrigerant circulation pipeline;

[0009] The standby refrigerant storage component includes a standby refrigerant storage tank and a standby refrigerant filling valve. The standby refrigerant storage tank and the standby refrigerant filling valve are connected via a refrigerant filling pipeline. The standby refrigerant storage tank can be connected to the refrigerant circulation pipeline via the refrigerant filling pipeline, the standby refrigerant filling valve, and the refrigerant filling valve, so that the standby refrigerant storage tank releases refrigerant into the refrigerant circulation pipeline.

[0010] Compared with the background technology, the heat pump device provided by the utility model has the following beneficial effects: when the heat pump device has a refrigerant leak, the maintenance personnel confirm that there is less refrigerant in the heat pump device and repair the refrigerant circulation pipeline, then open the spare refrigerant filling valve and the refrigerant filling valve, and inject the refrigerant in the spare refrigerant storage tank into the refrigerant circulation pipeline; and close the spare refrigerant filling valve and the refrigerant filling valve when the refrigerant injection is completed. There is no need for maintenance personnel to purchase refrigerant from outside, the refrigerant filling is more convenient, and the refrigerant filling efficiency is high.

[0011] In addition, the refrigerant filling valve is a structure of the existing heat pump device. It only needs to add a spare refrigerant storage component and connect the spare refrigerant filling valve in the spare refrigerant storage component with the refrigerant filling valve in the existing heat pump device. The modification to the existing heat pump device is small and the modification cost is low. The spare refrigerant storage tank is connected to the spare refrigerant filling valve through a refrigerant filling pipeline, which is convenient for determining the positions of the spare refrigerant filling valve and the spare refrigerant storage tank according to the actual available installation space.

[0012] In some embodiments, the heat pump device further includes a middle partition, the backup refrigerant storage tank is connected to a storage tank mounting member, and the storage tank mounting member is detachably connected to the middle partition.

[0013] In some embodiments, the tank mounting member is fixed to the spare refrigerant tank by welding.

[0014] In some embodiments, the standby refrigerant charging valve is connected to a valve mounting member, and the valve mounting member is detachably connected to the middle partition.

[0015] In some embodiments, the valve mounting member is fixed to the backup refrigerant charging valve by a fastener.

[0016] In some embodiments, the heat pump device further includes a chassis, the middle partition is fixed in the chassis, and the backup refrigerant storage assembly is located inside the chassis.

[0017] In some embodiments, the heat pump device further includes a compressor and a gas-liquid separator, the compressor and the gas-liquid separator are connected via a return air pipe, and the refrigerant filling valve is connected to the return air pipe.

[0018] In some embodiments, the refrigerant filling valve is a needle valve, and the needle valve is fixedly installed on the return air pipe;

[0019] In some embodiments, the refrigerant filling valve is a stop valve, and the stop valve is connected to the return air pipe through a pipeline.

[0020] In some embodiments, the refrigerant filling valve is provided with a first mounting joint, the standby refrigerant filling valve is provided with a second mounting joint, and the standby pipeline is detachably connected between the first mounting joint and the second mounting joint. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without paying any creative work.

[0022] Figure 1 It is a structural schematic diagram of a heat pump device provided by an embodiment of the utility model;

[0023] Figure 2 It is a structural schematic diagram of a spare refrigerant storage assembly provided by an embodiment of the utility model;

[0024] Figure 3 yes Figure 1 A local enlarged schematic diagram of point A in the middle.

[0025] In the figure:

[0026] 1. Spare refrigerant storage assembly; 11. Spare refrigerant storage tank; 12. Spare refrigerant filling valve; 121. Mounting seat; 13. Refrigerant filling pipeline; 14. Storage tank mounting piece; 141. First mounting plate; 142. Second mounting plate; 15. Valve mounting piece;

[0027] 2. Middle partition; 3. Chassis; 4. Air return pipe; 5. Needle valve; 6. Gas-liquid separator. DETAILED DESCRIPTION

[0028] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0029] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0031] In the description of this embodiment, the terms "upper", "lower", "right", etc., are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0032] like Figures 1 to 3 As shown, an embodiment of the utility model provides a heat pump device, which includes a refrigerant circulation pipeline, a refrigerant filling valve and a standby refrigerant storage component 1. The refrigerant filling valve is arranged on the refrigerant circulation pipeline. The standby refrigerant storage component 1 includes a standby refrigerant storage tank 11 and a standby refrigerant filling valve 12. The standby refrigerant storage tank 11 is connected to the standby refrigerant filling valve 12 through a refrigerant filling pipeline 13. The standby refrigerant storage tank 11 can be connected to the refrigerant circulation pipeline through the refrigerant filling pipeline 13, the standby refrigerant filling valve 12 and the refrigerant filling valve, so that the standby refrigerant storage tank 11 releases refrigerant into the refrigerant circulation pipeline.

[0033] Before leaving the factory, a specified amount of refrigerant is filled into the spare refrigerant storage tank 11. When a refrigerant leak occurs in the heat pump device, the maintenance personnel confirm that there is less refrigerant in the heat pump device and repair the refrigerant circulation pipeline, then open the spare refrigerant filling valve 12 and the refrigerant filling valve, and inject the refrigerant in the spare refrigerant storage tank 11 into the refrigerant circulation pipeline; and close the spare refrigerant filling valve 12 and the refrigerant filling valve when the refrigerant injection is completed. There is no need for maintenance personnel to purchase refrigerant from outside, and the refrigerant filling is more convenient and efficient.

[0034] In addition, the refrigerant filling valve is a structure of the existing heat pump device. It is only necessary to add a spare refrigerant storage component 1 and connect the spare refrigerant filling valve 12 in the spare refrigerant storage component 1 and the refrigerant filling valve in the existing heat pump device. The changes to the existing heat pump device are small and the cost of the changes is low.

[0035] The standby refrigerant storage tank 11 is connected to the standby refrigerant filling valve 12 via a refrigerant filling pipeline 13, so that the positions of the standby refrigerant filling valve 12 and the standby refrigerant storage tank 11 can be determined according to the actual available installation space.

[0036] Exemplarily, the refrigerant filling pipeline 13 is a hose, which can prevent the refrigerant filling pipeline 13 from interfering with other structures of the heat pump device.

[0037] In some embodiments, the heat pump device also includes a vacuum unit and a vacuum switch valve, wherein the outlet of the vacuum unit is connected to the outside atmosphere, and the inlet of the vacuum unit is connected to the refrigerant circulation pipeline; the vacuum switch valve is connected to the connecting pipeline between the inlet of the vacuum unit and the refrigerant circulation pipeline.

[0038] When a refrigerant leak occurs in a heat pump device, maintenance personnel generally look for the leak point for maintenance after the refrigerant in the refrigerant circulation pipeline has completely leaked. After the maintenance is completed, a large amount of air is contained in the refrigerant circulation pipeline. Before filling the refrigerant into the refrigerant circulation pipeline, the refrigerant circulation pipeline is first evacuated through a vacuum unit. After the vacuum is completed, the vacuum switch valve is controlled to disconnect the inlet of the vacuum unit and the connecting pipeline of the refrigerant circulation pipeline, and then the standby refrigerant charging valve 12 is controlled to connect the standby refrigerant storage tank 11 and the refrigerant circulation pipeline. Since the vacuum makes the pressure in the refrigerant circulation pipeline less than the pressure in the standby refrigerant storage tank 11, the refrigerant in the standby refrigerant storage tank 11 will be automatically injected into the refrigerant circulation pipeline. Exemplarily, the vacuum unit is a vacuum pump, and the vacuum switch valve is a normally closed switch valve.

[0039] It should be noted that the vacuum switch valve can be a solenoid switch valve or a manual switch valve.

[0040] In some embodiments, the heat pump device further includes a vacuum degree detection unit for detecting the vacuum degree in the refrigerant circulation pipeline. When the vacuum unit is used to evacuate the refrigerant circulation pipeline, the vacuum degree in the refrigerant circulation pipeline is monitored in real time by the vacuum degree detection unit until the vacuum degree in the refrigerant circulation pipeline meets the requirements, and then the standby refrigerant filling valve 12 is controlled to connect the standby refrigerant storage tank 11 and the refrigerant circulation pipeline to avoid a large amount of air in the refrigerant circulation pipeline that affects the injection amount of the refrigerant and thus affects the heat exchange efficiency of the heat pump device.

[0041] In some embodiments, Figure 2 As shown, the standby refrigerant filling valve 12 is a stop valve. In other embodiments, the standby refrigerant filling valve 12 can also be a needle valve. It should be noted that the standby refrigerant filling valve 12 is a manual valve, which is convenient for maintenance personnel to open and close the standby refrigerant filling valve 12 according to the refrigerant filling demand.

[0042] In some embodiments, the refrigerant filling valve is provided with a first mounting joint, the standby refrigerant filling valve 12 is provided with a second mounting joint, and the standby pipe is detachably connected between the first mounting joint and the second mounting joint. When the standby refrigerant storage assembly 1 needs to be used to replenish the refrigerant, the first mounting joint and the second mounting joint are connected through the standby pipe. After the refrigerant filling is completed, the standby pipe is removed to avoid the situation where the user opens the standby refrigerant filling valve 12 and the refrigerant filling valve to fill the refrigerant by himself, thereby improving the safety of the refrigerant filling.

[0043] It is understandable that, in actual applications, the backup pipeline may be a hose, and when it is necessary to inject the backup refrigerant, the maintenance personnel use the hose they carry to perform the operation.

[0044] In some embodiments, a fixed pipe may also be connected between the first mounting joint and the second mounting joint. When the backup refrigerant is needed, the fixed pipe is opened to inject the refrigerant into the refrigerant circulation pipeline, thereby avoiding the situation where the maintenance personnel forget to bring the backup pipe and are unable to inject the refrigerant.

[0045] In some embodiments, Figures 1 to 3 As shown, the heat pump device further includes a middle partition 2, and the standby refrigerant storage tank 11 is connected to a storage tank mounting member 14, and the storage tank mounting member 14 is detachably connected to the middle partition 2. In this way, the storage tank mounting member 14 is easy to be removed from the middle partition 2, and it is possible to choose whether to install the standby refrigerant storage tank 11 according to actual conditions, or replace the standby refrigerant storage tank 11 with a new one after the standby refrigerant storage tank 11 is used up.

[0046] Exemplarily, the storage tank mounting member 14 is connected to the middle partition plate 2 by fasteners, and assembly and disassembly is relatively convenient and quick.

[0047] Preferably, the tank mounting member 14 is welded and fixed to the standby refrigerant tank 11. In this way, when the surface of the standby refrigerant tank 11 is an arc surface, such as a cylindrical shape, it is convenient for processing operations in terms of technology. Exemplarily, the tank mounting member 14 is a sheet metal member, and the tank mounting member 14 includes a first mounting plate 141, and the opposite sides of the first mounting plate 141 are bent toward the same side of the first mounting plate 141 to form two second mounting plates 142, and the two second mounting plates 142 and the first mounting plate 141 form a U-shaped tank mounting member 14, and the two second mounting plates 142 are welded and fixed to the standby refrigerant tank 11, and the first mounting plate 141 is fixed to the middle partition 2 by fasteners.

[0048] In some embodiments, Figures 1 to 3 As shown, the standby refrigerant filling valve 12 is connected to a valve mounting member 15, and the valve mounting member 15 is detachably connected to the middle partition plate 2. The standby refrigerant filling valve 12 can be easily disassembled and replaced.

[0049] Exemplarily, the valve mounting member 15 is fixed to the standby refrigerant filling valve 12 by fasteners, and assembly and disassembly are relatively convenient and quick. Specifically, the valve mounting member 15 is an L-shaped plate, one end of which is fixed to the middle partition plate 2 by a second fastener, and a mounting seat 121 is fixed to the valve body of the standby refrigerant filling valve 12, and the mounting seat 121 and the other end of the L-shaped plate are connected by fasteners. Exemplarily, the valve mounting member 15 is an L-shaped plate formed by bending a sheet metal part.

[0050] In some embodiments, Figures 1 to 3As shown, the heat pump device also includes a chassis 3, a middle partition 2 is fixed in the chassis 3, and a spare refrigerant storage assembly 1 is located inside the chassis 3. The spare refrigerant storage assembly 1 is arranged inside the chassis 3, so that the spare refrigerant storage assembly 1 can be waterproofed and dustproofed, and at the same time, the aesthetics of the entire chassis will not be affected. It is understandable that the middle partition 2 can also divide the inner cavity of the chassis 3 into two spaces, and the spare refrigerant storage assembly 1 is arranged in the same space. In some embodiments, the heat pump device also includes an evaporator, a compressor, a condenser and an expansion valve connected in sequence through a refrigerant circulation pipeline, and the heat pump device also includes a gas-liquid separator 6, the gas-liquid separator 6 and the compressor are connected through a return air pipe 4, and the refrigerant filling valve is connected to the return air pipe 4.

[0051] The pressure in the return air pipe 4 is relatively low, and such a configuration is conducive to injecting the refrigerant in the standby refrigerant storage tank 11 into the refrigerant circulation pipeline. The gas-liquid separator 6 is mainly used to prevent the liquid refrigerant from directly entering the compressor and damaging the compressor.

[0052] In some embodiments, Figure 1 As shown, the refrigerant filling valve is a needle valve 5. Since the needle valve 5 has a low weight and a small volume, the requirement for installation space is small. Therefore, it is more convenient to directly fix the needle valve 5 on the return air pipe 4.

[0053] In some other embodiments, the refrigerant filling valve can also be set as a stop valve, which is connected to the return air pipe 4 through a pipeline, so as to facilitate the reasonable selection of the installation position of the stop valve in the chassis 3.

[0054] In addition, the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention is described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A heat pump device, characterized in that: include: Refrigerant circulation pipeline; A refrigerant filling valve, the refrigerant filling valve being arranged on the refrigerant circulation pipeline; The standby refrigerant storage component (1) comprises a standby refrigerant storage tank (11) and a standby refrigerant filling valve (12); the standby refrigerant storage tank (11) and the standby refrigerant filling valve (12) are connected via a refrigerant filling pipeline (13); the standby refrigerant storage tank (11) can be connected to the refrigerant circulation pipeline via the refrigerant filling pipeline (13), the standby refrigerant filling valve (12), and the refrigerant filling valve, so that the standby refrigerant storage tank (11) releases refrigerant into the refrigerant circulation pipeline.

2. The heat pump device according to claim 1, characterized in that: The heat pump device also includes a middle partition (2), the standby refrigerant storage tank (11) is connected to a storage tank mounting member (14), and the storage tank mounting member (14) is detachably connected to the middle partition (2).

3. The heat pump device according to claim 2, characterized in that: The storage tank mounting member (14) is fixed to the standby refrigerant storage tank (11) by welding.

4. The heat pump device according to claim 2, characterized in that: The standby refrigerant charging valve (12) is connected to a valve mounting member (15), and the valve mounting member (15) is detachably connected to the middle partition plate (2).

5. The heat pump device according to claim 4, characterized in that: The valve mounting member (15) is fixed to the standby refrigerant charging valve (12) via a fastener.

6. The heat pump device according to any one of claims 2 to 5, characterized in that: The heat pump device further comprises a chassis (3), the middle partition (2) is fixed inside the chassis (3), and the standby refrigerant storage assembly (1) is located inside the chassis (3).

7. The heat pump device according to any one of claims 1 to 5, characterized in that: The heat pump device also includes a compressor and a gas-liquid separator (6), wherein the compressor and the gas-liquid separator (6) are connected via a return air pipe (4), and the refrigerant filling valve is connected to the return air pipe (4).

8. The heat pump device according to claim 7, characterized in that: The refrigerant filling valve is a needle valve (5), and the needle valve (5) is fixedly installed on the return air pipe (4).

9. The heat pump device according to claim 7, characterized in that: The refrigerant filling valve is a stop valve, and the stop valve is connected to the return air pipe (4) through a pipeline.

10. The heat pump device according to any one of claims 1 to 5, characterized in that: The refrigerant filling valve is provided with a first mounting joint, the standby refrigerant filling valve (12) is provided with a second mounting joint, and the standby pipeline is detachably connected between the first mounting joint and the second mounting joint.

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