Filtering device, compressor system and air conditioning equipment

Abstract

According to the filtering device, the compressor system and the air conditioning equipment, the filtering barrel is installed on the exhaust port of the compressor, the filtering piece is arranged in the filtering barrel, and the refrigerant with refrigerant oil discharged from the exhaust port is filtered through the filtering piece; and the filtered refrigerant directly flows into the refrigerant using device for heat exchange. According to the embodiment, the filtered refrigerant and the refrigerant using device are used for heat exchange, and the heat exchange efficiency of the refrigerant and the refrigerant using device can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of refrigerant oil filtration for air conditioning equipment, and particularly relates to a filtration device, a compressor system and an air conditioning equipment. Background Art

[0002] Refrigerant oil is usually used in a compressor to lubricate the pump body assembly in the compressor. However, during the operation of the compressor, when the refrigerant flows out of the exhaust pipe, it is easy to carry refrigerant oil. The refrigerant carrying refrigerant oil will affect the heat exchange process with the outside world, and in severe cases, it will also affect the service life of the compressor. However, the prior art does not provide an effective solution to solve the problem of refrigerant oil carried in the refrigerant. Summary of the Utility Model

[0003] The utility model provides a filtration device, a compressor system and an air conditioning equipment, aiming at solving the problem that the refrigerant discharged during the operation of the existing compressor carries refrigerant oil.

[0004] An embodiment of the utility model provides a filtration device applied to a compressor. The compressor includes a compressor main body, and an exhaust port is arranged on the compressor main body. The filtration device includes a filtration cylinder body, one end of the filtration cylinder body is communicated with the exhaust port, the other end is connected with a refrigerant using device, and a filter element is arranged in the filtration cylinder body for filtering the refrigerant carrying refrigerant oil discharged from the exhaust port.

[0005] Specifically, the compressor further includes a liquid separator, and the liquid separator is communicated with the compressor main body; the filtration device further includes an oil storage assembly, one end of the oil storage assembly is communicated with the filtration cylinder body, the other end of the oil storage assembly is communicated with the liquid separator, and the oil storage assembly is used for collecting the filtered refrigerant oil and transmitting it back to the liquid separator.

[0006] Specifically, an oil collecting port is arranged on the filtration cylinder body, the filtration device further includes a first connecting pipe, one end of the first connecting pipe is connected with one end of the oil storage assembly, the other end is connected with the oil collecting port, and the height of the oil storage assembly is lower than the height of the oil collecting port.

[0007] Specifically, the filter element is inclined and arranged in the filtration cylinder body, and the lower end of the filter element is connected with the oil collecting port.

[0008] Specifically, a plurality of filter elements are arranged; the plurality of filter elements are arranged in a staggered or parallel inclined manner along the discharging direction of the refrigerant, and the lower end of the lowermost filter element is connected with the oil collecting port.

[0009] Specifically, the inclination angle of the filter element is greater than or equal to 30°.

[0010] Specifically, the oil storage assembly is arranged at the top of the liquid distributor, and the filtering device further includes a communication assembly arranged between the oil storage assembly and the liquid distributor. The communication assembly is used to close or open the channel between the oil storage assembly and the liquid distributor.

[0011] Specifically, the communication assembly is a communication valve, a capillary tube, an expansion valve or a pressure reducing valve.

[0012] Specifically, the filtering device further includes a second connecting pipe and a third connecting pipe. One end of the second connecting pipe is connected to the exhaust port, the other end of the second connecting pipe is connected to one end of the filtering cylinder body, one end of the third connecting pipe is connected to the other end of the filtering cylinder body, the other end of the third connecting pipe is connected to the refrigerant using device, and the diameter of the filtering cylinder body is larger than the diameters of the second connecting pipe and the third connecting pipe.

[0013] An embodiment of the present invention further provides a compressor system, including a compressor and the filtering device as described above arranged on the compressor.

[0014] An embodiment of the present invention further provides an air conditioning device, including the compressor system as described above.

[0015] An embodiment of the present invention provides a filtering device, a compressor system and an air conditioning device. The filtering device filters the refrigerant with entrained refrigerating oil discharged from the exhaust port by installing a filtering cylinder body on the exhaust port of the compressor and arranging a filtering element in the filtering cylinder body, and the filtered refrigerant directly flows into the refrigerant using device for heat exchange. By using the filtered refrigerant for heat exchange with the refrigerant using device in this embodiment, the heat exchange efficiency between the refrigerant and the refrigerant using device can be improved. Description of the Drawings

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0017] Figure 1 It is a schematic structural diagram of the compressor provided by the embodiment of the present invention before installing the filtering device;

[0018] Figure 2 It is a schematic structural diagram of a filtering device provided by the present invention;

[0019] Figure 3 It is a schematic structural diagram of a compressor system provided by the first embodiment of the present invention;

[0020] Figure 4 Schematic structural diagram of a compressor system provided in the second embodiment of the present utility model;

[0021] Figure 5 Schematic structural diagram of a compressor system provided in the third embodiment of the present utility model;

[0022] Figure 6 Schematic structural diagram of a compressor system provided in the fourth embodiment of the present utility model;

[0023] Figure 7 Schematic structural diagram of a compressor system provided in the fifth embodiment of the present utility model.

[0024] Explanation of the markings in the figure:

[0025] 1. Compressor; 11. Compressor main body; 111. Exhaust port; 12. Distributor;

[0026] 2. Filter device; 21. Filter cylinder; 211. Filter element; 212. Oil collection port; 22. Oil storage assembly; 23. First connecting pipe; 24. Connecting assembly; 25. Second connecting pipe; 26. Third connecting pipe;

[0027] 3. Refrigerant using device. Detailed implementation manners

[0028] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0029] It should be understood that when used in this specification and the appended claims, the terms "comprising" and "including" indicate the presence of the described features, wholes, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components, and / or their combinations.

[0030] It should also be understood that the terms used in this specification of the present utility model are only for the purpose of describing specific embodiments and are not intended to limit the present utility model. As used in this specification of the present utility model and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an", and "the" are intended to include the plural forms.

[0031] It should also be further understood that the term "and / or" used in the specification and appended claims of the present utility model refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0032] Please refer to Figures 1-3 , an embodiment of the present utility model provides a filtering device 2, which is applied to a compressor 1. The compressor 1 includes a compressor main body 11, and an exhaust port 111 is provided on the compressor main body 11. The filtering device 2 includes a filtering cylinder body 21. One end of the filtering cylinder body 21 is communicated with the exhaust port 111, and the other end is connected to a refrigerant using device 3. A filtering element 211 is arranged in the filtering cylinder body 21 for filtering the refrigerant with entrained refrigerating oil discharged from the exhaust port 111.

[0033] In this embodiment, the compressor 1 is used to compress the refrigerant to a high-pressure and high-temperature state, and then discharge the compressed refrigerant through the exhaust port 111. The discharged refrigerant enters the refrigerant using device 3 for heat exchange. During the compression process, the refrigerating oil used for lubrication inside the compressor main body 11 is easily discharged from the exhaust port 111 along with the refrigerant, so that the discharged refrigerant is entrained with refrigerating oil. If the refrigerant with entrained refrigerating oil is not processed, the refrigerating oil will also enter the refrigerant using device 3, affecting the heat exchange efficiency of the refrigerant. Moreover, the more refrigerating oil is discharged with the refrigerant, the easier it is to cause insufficient lubrication inside the compressor main body 11, resulting in wear of the compressor 1 and making the entire compressor unable to work properly. Therefore, it is preferably to provide a filtering device 2 outside the exhaust port 111 of the compressor main body 11 for filtering the refrigerant. If the refrigerant is entrained with refrigerating oil, the refrigerating oil is filtered, and the filtered refrigerant then enters the refrigerant using device 3, so as to ensure that the heat exchange efficiency between the refrigerant and the refrigerant using device 3 is not affected. Specifically, the filtering device 2 includes a filtering cylinder body 21. One end of the filtering cylinder body 21 is communicated with the exhaust port 111, and the other end is communicated with the refrigerant using device 3. A filtering element 211 is arranged in the filtering cylinder body 21. After the refrigerant is discharged from the exhaust port 111, it first passes through the filtering element 211 of the filtering cylinder body 21 for filtering. The refrigerating oil is filtered and adheres to the filtering element 211. After the refrigerant passes through the filtering element 211, it continues to be discharged in the direction of the refrigerant using device 3 until it enters the refrigerant using device 3. Among them, the refrigerant using device 3 can be a condenser or an evaporator, etc. By using the filtered refrigerant for heat exchange with the refrigerant using device in this embodiment, the filtered refrigerant can improve the heat exchange efficiency between the refrigerant and the refrigerant using device, thereby enhancing the overall operating efficiency and performance of the compressor.

[0034] In specific implementation, after the refrigerant is compressed by the compressor 1, the refrigerant is compressed into a high-temperature and high-pressure gas. To prevent the filter cylinder body 21 and the filter element 211 from being damaged due to the compressed refrigerant or other factors, it is preferably to select materials with corrosion resistance and high pressure resistance as the materials of the filter cylinder body 21 and the filter element 211 to ensure the normal operation of the filtering device 2. During the filtering process, an oil quantity sensor can also be arranged in the filter cylinder body 21 to detect the content of the refrigerating oil attached to the filter element 211. When the detected refrigerating oil content reaches a predetermined value, the filter element 211 is cleaned or replaced. After cleaning or replacement, the filter element 211 can continue to filter the refrigerant discharged from the exhaust port 111. Or, by arranging a quality sensor in the filter cylinder body 21, specifically arranged at the rear end in the filtering direction of the filter element 211, to detect whether the filtered refrigerant still carries refrigerating oil or other impurities. If it is detected that the filtered refrigerant still carries refrigerating oil or other impurities and the carrying amount is greater than the predetermined value, it indicates that the filtering effect of the filter element 211 is not good. At this time, the filter element 211 needs to be cleaned or replaced. After cleaning or replacement, the filter element 211 can continue to filter the refrigerant discharged from the exhaust port 111. Among them, the filter element 211 is a filter net, and the aperture of the filter net can be set to 0.15 mm, etc.

[0035] This filtering device is applicable to refrigeration equipment with a compressor, such as an air conditioner. For different refrigeration equipment, when using the filtering device, filter elements 211 with different apertures and materials can be designed according to specific situations to meet the requirements of various refrigerant flow rates and oil pollution levels.

[0036] Specifically, the compressor 1 further includes a liquid separator 12. The liquid separator 12 is communicated with the compressor main body 11. Usually, the bottom of the liquid separator 12 is communicated with the bottom of the compressor main body 11. The filtering device 2 further includes an oil storage assembly 22. One end of the oil storage assembly 22 is communicated with the filter cylinder body 21, and the other end of the oil storage assembly 22 is communicated with the liquid separator 12. The oil storage assembly 22 is used for collecting the filtered refrigerating oil and transmitting it back to the liquid separator 12.

[0037] In this embodiment, the filtered refrigerant oil adheres to the filter element 211. When the amount of refrigerant oil adhering to the filter element 211 reaches a certain value, it will fall back to the exhaust port 111 under the action of gravity. When the refrigerant discharges from the exhaust port 111, it carries more refrigerant oil. At this time, after the refrigerant passes through the filter element 211, the filtering effect is reduced. Therefore, by providing an oil storage assembly 22, and one end of the oil storage assembly 22 is communicated with the filter cylinder 21, the refrigerant oil filtered by the filter cylinder 21 flows into the oil storage assembly 22 for storage, reducing the refrigerant oil adhering to the filter element 211, ensuring the filtering effect of the filter element 211, and eliminating the need for frequent cleaning or replacement of the filter element 211. In order to enable the refrigerant oil stored in the oil storage assembly 22 to be recycled, the other end of the oil storage assembly 22 is communicated with one end of the liquid distributor 12, and the other end of the liquid distributor 12 is communicated with the compressor body 11. The refrigerant oil stored in the oil storage assembly 22 flows into the liquid distributor 12. When the compressor 1 operates, the refrigerant oil is sucked from the liquid distributor 12 into the compressor body 11 through suction. In this embodiment, the oil storage assembly 22 can prevent the filtered refrigerant oil from directly dripping back into the compressor body 11, reducing potential system contamination and damage. The refrigerant oil processed by the liquid distributor 12 then flows back into the compressor body 11, which can fully lubricate the internal components of the compressor body 11 and improve the working efficiency of the compressor 1.

[0038] Specifically, an oil collecting port 212 is provided on the filter cylinder 21. The filtering device 2 further includes a first connecting pipe 23. One end of the first connecting pipe 23 is connected to one end of the oil storage assembly 22, and the other end is connected to the oil collecting port 212. The height of the oil storage assembly 22 is lower than the height of the oil collecting port 212.

[0039] In this embodiment, in order to enable the filtered refrigerant oil to flow into the oil storage assembly 22 better, an oil collecting port 212 is provided on the filtering cylinder body 21, and the oil collecting port 212 and the oil storage assembly 22 are connected through a first connecting pipe 23. Moreover, the height of the oil storage assembly 22 is lower than that of the oil collecting port 212. After the filtering element 211 filters the refrigerant, the refrigerant oil adheres to the filtering element 211. The refrigerant oil has fluidity and flows along the filtering element 211 towards the oil collecting port 212 and flows into the oil storage assembly 22 through the first connecting pipe 23. In this embodiment, by setting the height of the oil storage assembly 22 lower than that of the oil collecting port 212, the refrigerant oil can flow more smoothly, and the refrigerant oil can be collected into the oil storage assembly 22 without additionally increasing an air pump, reducing the installation complexity of the filtering device 2. The refrigerant discharged from the exhaust port 111 is usually gaseous and has sufficient pressure, so it will rush through the filtering element 211 from the exhaust port 111, and the impact force is relatively large. After passing through the filtering element 211, it will directly be discharged from the other end of the filtering cylinder body 21 to the refrigerant using device 3, instead of entering the oil storage assembly 22 from the oil collecting port 212. In addition, in order to ensure that the refrigerant does not enter the oil storage assembly 22 from the oil collecting port 212, the diameter of the oil collecting port 212 can also be set smaller. For example, the diameter of the oil collecting port 212 is set smaller than the pipe diameter of the first connecting pipe 23. Specifically, the diameter of the oil collecting port 212 can be set to 0.2 to 0.8 times the pipe diameter of the first connecting pipe 23.

[0040] Specifically, the filtering element 211 is obliquely arranged in the filtering cylinder body 21, and the lower end of the filtering element 211 is connected to the oil collecting port 212.

[0041] In this embodiment, in order to improve the filtering efficiency, the filtering element 211 is obliquely arranged in the filtering cylinder body 21, and the lower end of the filtering element 211 is connected to the oil collecting port 212, enabling the refrigerant oil to flow quickly into the first connecting pipe 23 when passing through the filtering element 211, improving the collection efficiency of the refrigerant oil and reducing the residence time of the refrigerant oil on the filtering element 211, preventing excessive accumulation of the refrigerant oil on the filtering element 211 from causing blockage of the filtering element 211 and enabling the refrigerant to not filter the refrigerant oil well. In this embodiment, by obliquely arranging the filtering element 211, the risk of blockage of the refrigerant oil is reduced, thereby prolonging the service life of the filtering element 211 and reducing the maintenance frequency.

[0042] Specifically, a plurality of filtering elements 211 are provided; the plurality of filtering elements 211 are arranged obliquely and staggered or obliquely and parallel along the discharge direction of the refrigerant, and the lower end of the lowermost filtering element 211 is connected to the oil collecting port 212.

[0043] In this embodiment, in order to enable the refrigerant with refrigerant oil to be fully filtered, it is preferably to provide a plurality of filtering elements 211, and the plurality of filtering elements 211 are arranged obliquely along the discharge direction of the refrigerant. The oblique arrangement mode can be staggered obliquely. Figure 3As shown, the lowermost filter element 211 slopes upward in the left-to-right direction (with the side of the oil collecting port 212 being the left), the filter element 211 connected to the lowermost filter element 211 slopes upward in the right-to-left direction, and the next connected filter element 211 slopes upward again in the left-to-right direction, that is, the inclination directions between adjacent filter elements 211 are opposite. Adjacent filter elements 211 can be connected end to end or not; the inclination method can also be parallel inclination. Combining Figure 4 As shown, the lowermost filter element 211 slopes upward in the left-to-right direction (with the side of the oil collecting port 212 being the left), and the remaining filter elements 211 slope upward in the left-to-right direction following the inclination direction of the lowermost filter element 211, that is, the inclination directions between adjacent filter elements 211 are the same and there is a certain distance between them. In specific implementation, such as Figure 5 As shown, the lowermost filter element 211 can also be sloped upward in the left-to-right direction (with the side of the oil collecting port 212 being the left), and the remaining filter elements 211 slope upward in the right-to-left direction, that is, the inclination direction of the lowermost filter element 211 is opposite to that of the remaining filter elements 211.

[0044] Regardless of which inclination method is set, it is necessary to ensure that the lower end of the lowermost filter element 211 is connected to the oil collecting port 212. After the refrigerant enters the filter cylinder body 21, the refrigerating oil is filtered by multiple filter elements 211. Due to the inclined arrangement of the multiple filter elements 211, the refrigerating oil flows along the mesh surface of the filter element 211 towards the lower end. After passing through the lowermost filter element 211, there is still a small amount of refrigerating oil attached to the refrigerant, and it enters the following several filter elements 211. At this time, the following several filter elements 211 continue to filter the remaining small amount of refrigerating oil, thereby separating the refrigerating oil from the refrigerant. The filtered refrigerant is discharged into the refrigerant using device 3. The refrigerating oil attached to the multiple filter elements 211 flows along the inclined direction under the action of gravity, thereby entering the first connecting pipe 23 and then being stored in the oil storage assembly 22.

[0045] The refrigerant in this embodiment is filtered through multiple layers of multiple filter elements 211, improving the filtering effect. Moreover, the multiple filter elements 211 share the filtering task, reducing the risk of blockage for each filter element 211, contributing to maintaining the stable operation of the filtering device 2, and reducing the maintenance and replacement frequency of the filter elements 211.

[0046] In specific implementation, such as Figure 6As shown, the remaining filter elements 211 except the lowermost filter element 211 can be horizontally arranged. The lowermost filter element 211 is still inclined and the lower end is connected to the oil collecting port 212. The remaining filter elements 211 are used to filter the refrigerant still carrying a small amount of refrigerating oil again. The remaining filter elements 211 do not need to be inclined during filtration. If the content of refrigerating oil attached to them is relatively large, under the action of gravity, it will drip onto the lowermost filter element 211. At this time, the refrigerating oil can also be recovered into the oil storage assembly 22 through the lowermost filter element 211.

[0047] Specifically, the inclination angle of the filter element 211 is greater than or equal to 30°.

[0048] In this embodiment, a larger inclination angle can accelerate the flow of refrigerating oil, reduce the residence time of refrigerating oil on the filter element 211, and enable the refrigerating oil to quickly flow into the oil collecting port 212, thereby improving the recovery efficiency of refrigerating oil. Therefore, the inclination angle of the filter element 211 is preferably set to be greater than or equal to 30°, where the inclination angle is judged based on the horizontal plane.

[0049] Specifically, the oil storage assembly 22 is arranged on the top of the liquid distributor 12. The filtering device 2 further includes a communication assembly 24 arranged between the oil storage assembly 22 and the liquid distributor 12. The communication assembly 24 is used to close or open the channel between the oil storage assembly 22 and the liquid distributor 12.

[0050] In this embodiment, the oil storage assembly 22 is arranged on the top of the liquid distributor 12. When the communication assembly 24 is opened, the stored refrigerating oil can be more quickly guided into the liquid distributor 12 by the action of gravity, and it can also prevent the liquid in the liquid distributor 12 from flowing back into the oil storage assembly 22. By controlling the communication state between the oil storage assembly 22 and the liquid distributor 12 through the communication assembly 24, the refrigerating oil can flow into the liquid distributor 12 at any time. During specific implementation, to prevent the communication assembly 24 from not being able to be opened or closed in time, resulting in too much or too little oil storage in the oil storage assembly 22, an oil level detector can be arranged on the oil storage assembly 22 to detect the content of refrigerating oil in the oil storage assembly 22. If the content of refrigerating oil is greater than the upper oil level limit value, the communication assembly 24 is controlled to open until the refrigerating oil in the oil storage assembly 22 flows into the liquid distributor 12. When the content of refrigerating oil in the oil storage assembly 22 is less than the lower oil level limit value, the communication assembly 24 is controlled to close and wait for the oil storage assembly 22 to continue collecting refrigerating oil, thereby realizing the automatic opening and closing of the communication assembly 24.

[0051] In addition, a timing device can also be arranged on the oil storage assembly 22. The timing device is communicatively connected to the communication assembly 24. The opening or closing time point is preset on the timing device, and the opening or closing duration is set. When the opening or closing time point is reached, the communication assembly 24 automatically opens or closes until it is closed or opened again after a period of time.

[0052] Specifically, the connecting component 24 is a connecting valve, a capillary tube, an expansion valve or a pressure reducing valve.

[0053] In this embodiment, in order to enable the refrigerating oil to be smoothly sucked by the compressor main body 11 after entering the liquid separator 12, the refrigerating oil can be cooled and depressurized. Preferably, the connecting component 24 is set as a capillary tube, an expansion valve or a pressure reducing valve. Among them, the capillary tube increases the flow rate of the refrigerating oil through a small channel, reducing the pressure. During the pressure reduction process, the temperature of the refrigerating oil will decrease; the expansion valve reduces the pressure by adjusting the flow rate of the refrigerating oil. There is a throttling device in the expansion valve, and the throttling device causes the refrigerating oil to depressurize when flowing through, and the temperature also decreases accordingly. The pressure reducing valve directly increases the flow rate by adjusting the size of the valve, thereby reducing the pressure of the refrigerating oil. During the pressure reduction process, the refrigerating oil absorbs the heat of the surrounding environment due to the pressure reduction, thereby achieving a cooling effect. In specific implementation, it is also possible not to cool and depressurize the refrigerating oil. At this time, the connecting component 24 can be directly set as a connecting valve.

[0054] Specifically, the filtering device 2 further includes a second connecting pipe 25 and a third connecting pipe 26. One end of the second connecting pipe 25 is connected to the exhaust port 111, the other end of the second connecting pipe 25 is connected to one end of the filtering cylinder body 21, one end of the third connecting pipe 26 is connected to the other end of the filtering cylinder body 21, and the other end of the third connecting pipe 26 is connected to the refrigerant using device 3. The diameter of the filtering cylinder body 21 is larger than the diameters of the second connecting pipe 25 and the third connecting pipe 26.

[0055] In this embodiment, a second connecting pipe 25 is provided between the exhaust port 111 and the filtering cylinder body 21. The refrigerant is discharged from the exhaust port 111, then enters the second connecting pipe 25, and then enters the filtering cylinder body 21, so that all the refrigerant discharged from the exhaust port 111 can enter the filtering cylinder body 21. And a third connecting pipe 26 is also provided between the filtering cylinder body 21 and the refrigerant using device 3, so that the filtered refrigerant can all enter the refrigerant using device 3 for heat exchange, improving the utilization rate of the refrigerant. In order to make the filtering effect of the filter element 211 better, it is preferred to set the diameter of the filtering cylinder body 21 (referring to the diameter of the cross-section of the filtering cylinder body 21) to be larger, and the diameters of the second connecting pipe 25 and the third connecting pipe 26 (referring to the diameters of the cross-sections of the connecting pipes) to be smaller, thereby controlling the content of the refrigerant flowing into or out of the filtering cylinder body 21. At the same time, the larger diameter can accommodate a larger filter element 211, thereby increasing the filtering area of the filter element 211, enabling the refrigerant entering the filtering cylinder body 21 to be fully filtered, and thus improving the filtering effect. In the foregoing embodiment, the shape of the filtering cylinder body 21 is cylindrical. Refer to Figures 3-6 In specific implementation, the shape of the filtering cylinder body 21 can also be set as a square shape. Refer to Figure 7As shown, it can also be other shapes, as long as the diameter of the filter cylinder body 21 is greater than the diameters of the second connecting pipe 25 and the third connecting pipe 26.

[0056] As Figure 3 As shown, an embodiment of the present invention also provides a compressor system, including a compressor 1 and the filtering device 2 as described above provided on the compressor.

[0057] In this embodiment, the filter element 211 in the filtering device 2 separates the refrigeration oil from the refrigerant, and then the separated refrigeration oil is returned to the compressor 1 through the oil storage assembly 22, reducing the loss of refrigeration oil and enabling good lubrication of the internal components of the compressor main body 11.

[0058] An embodiment of the present invention also provides an air conditioning device, including the compressor system as described above.

[0059] As described above, the above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of various equivalent modifications or substitutions, and these modifications or substitutions should all be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A filter device, applied to a compressor, the compressor comprising a compressor body, the compressor body being provided with an exhaust port, characterized in that: The filter device comprises a filter cylinder, one end of which is connected to the exhaust port, and the other end is connected to the refrigerant using device. A filter element is arranged in the filter cylinder for filtering the refrigerant with refrigeration oil discharged from the exhaust port.

2. The filtering device according to claim 1, characterized in that: The compressor also includes a liquid separator, which is connected to the compressor body; the filtering device also includes an oil storage assembly, one end of which is connected to the filter cylinder, and the other end of which is connected to the liquid separator. The oil storage assembly is used to collect the filtered refrigerant oil and transmit it back to the liquid separator.

3. The filtering device according to claim 2, characterized in that: The filter cylinder is provided with an oil collecting port, and the filter device also includes a first connecting pipe, one end of which is connected to one end of the oil storage assembly, and the other end is connected to the oil collecting port, and the height of the oil storage assembly is lower than the height of the oil collecting port.

4. The filtering device according to claim 3, characterized in that: The filter element is obliquely arranged in the filter cylinder, and a lower end of the filter element is connected to the oil collection port.

5. The filtering device according to claim 4, characterized in that: There are multiple filter elements; the multiple filter elements are staggered and tilted or parallel and tilted along the discharge direction of the refrigerant, and the lower end of the bottom filter element is connected to the oil collection port.

6. The filtering device according to claim 4, characterized in that: The inclination angle of the filter element is greater than or equal to 30°.

7. The filtering device according to claim 2, characterized in that: The oil storage assembly is arranged on the top of the liquid separator, and the filtering device also includes a connecting assembly arranged between the oil storage assembly and the liquid separator, and the connecting assembly is used to close or open the channel between the oil storage assembly and the liquid separator.

8. The filtering device according to claim 7, characterized in that: The connecting component is a connecting valve, a capillary tube, an expansion valve or a pressure reducing valve.

9. The filtering device according to claim 1, characterized in that: The filtering device also includes a second connecting pipe and a third connecting pipe, one end of the second connecting pipe is connected to the exhaust port, the other end of the second connecting pipe is connected to one end of the filter cylinder, one end of the third connecting pipe is connected to the other end of the filter cylinder, and the other end of the third connecting pipe is connected to the refrigerant using device, and the diameter of the filter cylinder is larger than the diameters of the second connecting pipe and the third connecting pipe.

10. A compressor system, characterized in that: The invention comprises a compressor and a filtering device as claimed in any one of claims 1 to 9 arranged on the compressor.

11. An air conditioning device, characterized in that: Comprising the compressor system of claim 10.

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