A purification filtration device, a liquid receiver, and a heat pump system

Abstract

A purification and filtration device, a liquid receiver, and a heat pump system are disclosed. The purification and filtration device includes a housing with openings at both ends, a filter screen, an annular magnet, and a shut-off valve. The filter screen is disposed within the annular magnet to form a purification and filtration assembly. The annular magnet is fixed to the inner wall of the housing. The shut-off valve is located at both ends of the housing. Refrigerant enters from one end of the housing, passes through the purification and filtration assembly, and flows out from the other end of the housing. The filter screen blocks impurities, and the annular magnet attracts metal shavings, preventing them from entering the compressor, reducing compressor wear, and extending its service life.

Description

Technical Field

[0001] This invention relates to heat pump systems. Background Technology

[0002] Currently, with existing technology, the continuous friction and grinding caused by long-term high-speed operation of the compressor will generate iron powder. Copper shavings, metal oxide scale, dust particles, and other solid impurities are easily left behind during copper pipe welding, piping assembly, and unit manufacturing. These impurities circulate within the system along with the refrigerant and refrigeration oil, continuously wearing down the compressor vanes and valve plates, causing jamming of the four-way valve core, and clogging of the electronic expansion valve's throttling orifice. This results in rapid damage to core precision components and a gradual decline in the unit's heat exchange efficiency year by year. Existing heat pump piping filters are all welded fixed structures, which have two major fatal flaws: The operation and maintenance process is complicated and the downtime losses are large. If the filter needs to be cleaned or replaced, the entire unit must be shut down, all the refrigerant in the system must be recovered, and the pipeline must be cut before the filter can be removed. After the new installation, secondary welding, vacuuming, leak detection, pressure holding and refilling of refrigerant are required. The whole operation requires professional equipment and certified personnel. Commercial uninterrupted operation units cannot withstand long-term downtime maintenance. Impurities cannot be graded and intercepted, leading to prolonged operation with defects. Due to high maintenance costs, on-site maintenance rarely involves proactive filter replacement, resulting in permanent impurity retention and circulation. A single filter can only intercept large particles, while fine iron powder easily penetrates the filter, causing continuous wear and tear on components. Without a multi-stage purification architecture, impurities repeatedly corrode system components under both cooling and heating conditions, significantly reducing unit reliability and design life. Summary of the Invention

[0003] The purpose of this invention is to provide a purification and filtration device that adsorbs impurities and metal shavings in the refrigerant flow pipeline, thereby extending its service life.

[0004] This invention is implemented as follows: a purification and filtration device, characterized in that it includes a housing with openings at both ends, a filter screen, an annular magnet, and a shut-off valve. The filter screen is set inside the annular magnet to form a purification and filtration assembly. The annular magnet is fixed to the inner wall of the housing. The shut-off valve is set at both ends of the housing. The refrigerant enters from one end of the housing, passes through the purification and filtration assembly, and flows out from the other end of the housing.

[0005] The purification and filtration device is characterized in that the purification and filtration component has one part.

[0006] The purification and filtration device is characterized in that: the purification and filtration components are provided in two or more units connected in series; Alternatively, the purification and filtration assembly may include a ring magnet and two filter screens disposed within the ring magnet.

[0007] The purification and filtration device is characterized in that it also includes a maintenance valve, which is located on the housing and communicates with the inner cavity of the housing.

[0008] A liquid reservoir is characterized in that it includes a reservoir body with a lower opening, a purification magnet, and a shut-off valve. The purification magnet is disposed on the inner wall of the reservoir body, and the shut-off valve is disposed on the interface of the lower opening of the reservoir body.

[0009] The liquid storage device described above is characterized in that the purification magnet is a cylindrical shape with openings at the top and bottom. Alternatively, the purification magnet may be cylindrical with an open top and a liquid guiding hole on the bottom plate.

[0010] A heat pump system, characterized in that it includes a compressor, a four-way valve, an indoor heat exchanger, an outdoor heat exchanger, a gas-liquid separator, an electronic expansion valve, a purification and filtration device as described above, and a liquid receiver as described above. The purification and filtration device is installed on the refrigerant pipeline.

[0011] The heat pump system described above is characterized in that the purification and filtration device is installed on the pipeline between the indoor heat exchanger and the electronic expansion valve, and between the outdoor heat exchanger and the electronic expansion valve. Alternatively, two parallel purification and filtration devices may be installed on the pipeline between the indoor heat exchanger and the electronic expansion valve, and between the outdoor heat exchanger and the electronic expansion valve, with one purification and filtration device used for heating and the other for cooling.

[0012] The heat pump system described above is characterized in that the purification and filtration device is installed on the pipeline between the indoor heat exchanger and the electronic expansion valve, and between the outdoor heat exchanger and the electronic expansion valve.

[0013] The heat pump system described above is characterized in that the purification filter and the liquid receiver are detachable.

[0014] This invention discloses a purification and filtration device. Due to its structure, the filter screen can block impurities, and the annular magnet can attract metal shavings, preventing them from entering the compressor, reducing compressor wear, and extending its service life. Attached Figure Description

[0015] Figure 1 This is the front view of the present invention.

[0016] Figure 2 This is a cross-sectional view of the second embodiment of the present invention.

[0017] Figure 3 This is a flowchart of the heating state according to the third embodiment of the present invention.

[0018] Figure 4This is a flowchart of the cooling state according to the third embodiment of the present invention.

[0019] Figure 5 This is a partial view of a further improvement in the third embodiment of the present invention.

[0020] Figure 6 This is a physical diagram of the maintenance valve of the present invention. Detailed Implementation

[0021] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0022] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0023] like Figure 1 As shown, a purification and filtration device 1 includes a housing 2 with openings at both ends, a filter screen 3, an annular magnet 4, and a shut-off valve 5. The filter screen 3 is set inside the annular magnet 4 to form a purification and filtration assembly. The annular magnet 4 is fixed to the inner wall of the housing 2. The shut-off valve 5 is set at both ends of the housing 2. The refrigerant enters from one end of the housing 2, passes through the purification and filtration assembly, and flows out from the other end of the housing 2.

[0024] The purification and filtration assembly has one unit.

[0025] As a further improvement of the present invention: the purification and filtration assembly is provided with two or more units connected in series.

[0026] Alternatively, the purification and filtration assembly may include a ring magnet and two filter screens disposed within the ring magnet; there is a gap between the two filter screens; It also includes a maintenance valve 6, which is located on the housing 2 and communicates with the inner cavity of the housing 2. For example... Figure 6 As shown, the inspection valve 6 is manufactured by Zhongshan Gangli Refrigeration Parts Co., Ltd.

[0027] Example 2 like Figure 2As shown, a liquid reservoir 7 includes a liquid reservoir body 71 with a lower opening, a purification magnet 72, a shut-off valve 5, and a maintenance valve 6. The purification magnet 72 is disposed on the inner wall of the liquid reservoir body 71, and the shut-off valve 5 is disposed on the interface of the lower opening of the liquid reservoir body 71; the maintenance valve 6 is connected to the interface.

[0028] As a further improvement of the present invention: the purifying magnet 72 is a cylindrical shape with openings at the top and bottom.

[0029] Alternatively, the purification magnet 72 is a cylindrical shape with an open top, and the bottom plate is provided with a liquid guiding hole, which corresponds to the interface.

[0030] Example 3 like Figure 3 As shown, a heat pump system includes a compressor 8, a four-way valve 9, an indoor heat exchanger 101, an outdoor heat exchanger 102, a gas-liquid separator 11, an electronic expansion valve 12, a purification filter device 1 as described above, and a liquid receiver 7 as described above. The purification and filtration device 1 is installed on the refrigerant pipeline.

[0031] The purification and filtration device 1 is located on the pipeline between the compressor 8 and the four-way valve 9.

[0032] The purification and filtration device 1 is installed on the pipeline between the indoor heat exchanger 101 and the electronic expansion valve 12, and between the outdoor heat exchanger 102 and the electronic expansion valve 12. Heating process, such as Figure 3 As shown, the refrigeration process, such as Figure 4 As shown.

[0033] The present invention can also be implemented as follows: two parallel purification and filtration devices 1 are respectively provided on the pipeline between the indoor heat exchanger 101 and the electronic expansion valve 12, and the outdoor heat exchanger 102 and the electronic expansion valve 12. One purification and filtration device 1 is used for heating and the other purification and filtration device 1 is used for cooling. With the above configuration, it is also possible to achieve the following: one purification and filtration device 1 is used for cooling or heating, and another purification and filtration device 1 is on standby; when one purification and filtration device 1 needs maintenance, one purification and filtration device 1 is shut down, and the other purification and filtration device 1 is activated; maintenance can be achieved without stopping the machine.

[0034] The purification and filtration device 1 is detachable. The liquid reservoir 7 is detachable.

[0035] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A purification and filtration device, characterized in that: It includes a housing with openings at both ends, a filter screen, an annular magnet, and a shut-off valve. The filter screen is set inside the annular magnet to form a purification and filtration assembly. The annular magnet is fixed to the inner wall of the housing. The shut-off valve is set at both ends of the housing. The refrigerant enters from one end of the housing, passes through the purification and filtration assembly, and flows out from the other end of the housing.

2. The purification and filtration device according to claim 1, characterized in that: The purification and filtration assembly has one unit.

3. The purification and filtration device according to claim 1, characterized in that: The purification and filtration assembly consists of two or more components connected in series. Alternatively, the purification and filtration assembly may include a ring magnet and at least two filter screens disposed within the ring magnet.

4. The purification and filtration device according to claim 1, characterized in that: It also includes a maintenance valve, which is located on the housing and communicates with the inner cavity of the housing.

5. A liquid reservoir, characterized in that: It includes a liquid reservoir body with a lower opening, a purification magnet, a shut-off valve, and a maintenance valve. The purification magnet is located on the inner wall of the liquid reservoir body, the shut-off valve is located on the interface of the lower opening of the liquid reservoir body, and the maintenance valve is connected to the interface.

6. A liquid reservoir according to claim 5, characterized in that: The purification magnet is a cylindrical shape with openings at the top and bottom. Alternatively, the purification magnet may be cylindrical with an open top and a liquid guiding hole on the bottom plate.

7. A heat pump system, characterized in that: It includes a compressor, a four-way valve, an indoor heat exchanger, an outdoor heat exchanger, a gas-liquid separator, an electronic expansion valve, a purification and filtration device as described in any one of claims 1-4, and a liquid receiver as described in any one of claims 5-6. The purification and filtration device is located on the refrigerant pipeline.

8. A heat pump system according to claim 7, characterized in that: The purification and filtration device is located on the pipeline between the compressor and the four-way valve.

9. A heat pump system according to claim 7, characterized in that: The purification and filtration device is installed on the pipeline between the indoor heat exchanger and the electronic expansion valve, and between the outdoor heat exchanger and the electronic expansion valve. Alternatively, two parallel purification and filtration devices may be installed on the pipeline between the indoor heat exchanger and the electronic expansion valve, and between the outdoor heat exchanger and the electronic expansion valve, with one purification and filtration device used for heating and the other for cooling.

10. A heat pump system according to claim 7, 8 or 9, characterized in that: The purification and filtration device and the liquid storage tank are detachable.

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