Replaceable filter for refrigerating unit

Abstract

The filter comprises a filter element, the filter element comprises an upper end cover, a filter element body and a lower sealing cover, the upper end cover is fixedly connected with the upper end of the filter element body, and the lower sealing cover is fixedly connected with the lower end of the filter element body; a clamping ring protruding towards the outside of the filter element body is arranged in the center of the top of the upper end cover, a groove sunken towards the inside of the filter element body is formed in the center of the bottom of the lower sealing cover, and the groove is fixedly connected with a spring; a limiting ring is arranged in the center of the interior of the cylinder cover, and the limiting ring is connected with the clamping ring; the cylinder body is used for containing the filter element connected with the cylinder cover; and the hoop is used for fixedly connecting the contact parts of the cylinder cover and the cylinder body. The filter element can be mounted and dismounted simply, conveniently and quickly, and the internal space of a unit during mounting of the filter is saved.

Description

Technical Field

[0001] The present application relates to the technical field of liquid filtration and purification, and in particular to a replaceable filter for a refrigeration unit. Background Art

[0002] In the filter used in the refrigeration unit, the filter needs to be disassembled for replacement or cleaning. The existing filter has a pull rod in the middle of the filter element, which is connected to the cylinder cover by threads to fix the filter element and the cylinder cover, and then the cylinder body and the cylinder cover are connected by a clamp to form a seal. The pull rod type filter requires a large space. When installing the filter, the space below the filter must be reserved for the length of the pull rod and the length of the cylinder body before the cylinder body can be removed. The pull rod must be removed first before the filter element can be removed, and the operation steps are cumbersome. Utility Model Content

[0003] In view of this, the main purpose of the present application is to provide a replaceable filter for a refrigeration unit, which can simplify and quickly install and remove the filter element and save internal space when installing the filter in the unit.

[0004] The present application provides a replaceable filter for a refrigeration unit, comprising:

[0005] A filter element, comprising an upper end cover, a filter element body and a lower cover, wherein the upper end cover is fixedly connected to the upper end of the filter element body, the lower cover is fixedly connected to the lower end of the filter element body, and a snap ring protruding toward the outside of the filter element body is provided at the center of the top of the upper end cover, and a groove recessed toward the inside of the filter element body is provided at the center of the bottom of the lower cover, and a spring is fixedly connected to the groove;

[0006] A cylinder head, wherein a limiting ring is provided at the inner center thereof, and the limiting ring is connected to the clamping ring;

[0007] a cylinder body, which contains the filter element connected to the cylinder head;

[0008] A clamp is used to fix the contact parts of the cylinder head and the cylinder body.

[0009] From above, a spring is welded on the lower cover at the bottom of the filter element body. The spring is in contact with the cylinder body and has a certain amount of compression, which saves space at the bottom of the cylinder body. When the filter element is installed, the cylinder body and the cylinder cover are connected and sealed by a clamp. The spring will give the filter element an upward force. In order to prevent the filter element from shifting during installation, a limit ring is welded inside the cylinder cover of the filter. The clamping ring on the upper end cover of the upper part of the filter element body can be quickly positioned by being clamped on the limit ring, simplifying the installation and disassembly steps.

[0010] Optionally, a sealing rubber pad is provided at a position of the upper end cover except for the clamping ring, and when the filter element is connected to the cylinder cover through the elastic force of the spring, the sealing rubber pad is in sealing contact with the limiting ring.

[0011] As described above, the sealing rubber pad can prevent the liquid from flowing out, thereby preventing the unfiltered fluid from mixing with the filtered fluid.

[0012] Optionally, the clamping ring is configured to be open and communicate with the interior of the filter element body.

[0013] From the above, the clamp ring is set to be open, so that when the unfiltered fluid flows into the interior of the filter, it is filtered through the layers of the filter element body, purifies the liquid, and then enters the interior of the filter element body, and then easily flows out of the filter.

[0014] Optionally, the limiting ring includes a first limiting ring and a second limiting ring, the first limiting ring is arranged inside the second limiting ring, and the two are concentrically arranged at the center of the cylinder head.

[0015] From the above, the clamping ring is clamped inside the first limiting ring. The first limiting ring is set as a small diameter cylinder, and the second limiting ring is set as a large diameter cylinder. The first limiting ring and the second limiting ring are both in contact with the sealing rubber pad to prevent the liquid from flowing out and ensure the airtightness of the filter element and the cylinder cover.

[0016] Optionally, the filter element body comprises a filter element skeleton, a filter layer and a filter screen, wherein the filter element skeleton supports the filter layer and the filter screen in sequence.

[0017] From the above, the innermost layer of the filter element body is the filter element skeleton, which can not only protect the filter layer and filter screen from damage caused by external bumps, but also prevent the filter layer and filter screen from bending and deformation caused by pressure shock during work; directly covering the filter element skeleton is the filter layer, which ensures that the filter element can play the required filtering role and achieve its specified cleanliness; the filter layer is covered with a layer of filter screen to maintain the technological shape of the filter layer, so that the filter layer is evenly and fully in contact with the working medium, thereby improving the filtering effect.

[0018] Optionally,

[0019] A fluid channel inlet is provided on the inner side wall of the top of the cylinder head, and the fluid enters the interior of the filter through the fluid channel inlet, and then enters the interior of the filter element body through the filter screen, the filter layer and the filter element frame on the filter element body in sequence;

[0020] A first fluid channel outlet is provided on the inner side wall of the cylinder head top at a position opposite to the fluid channel inlet;

[0021] A second fluid channel outlet is provided on the second limiting ring at the same horizontal position as the first fluid channel outlet, and the fluid filtered by the filter element body flows out through the second fluid channel outlet and the first fluid channel outlet in sequence.

[0022] From the above, the cylinder head is provided with a second limiting ring and a first limiting ring in sequence, wherein the second limiting ring is a stainless steel cylinder, the first limiting ring is a stainless steel cylinder with a circle full of small holes, the second limiting ring is arranged concentrically with the first limiting ring, and the diameter of the second limiting ring is larger than the diameter of the first limiting ring; the second limiting ring has a second fluid channel outlet at the upper part, which is convenient for the filtered fluid to flow out of the filter element body, and the first limiting ring is surrounded by small holes, which provides convenience for the filtered fluid to flow out of the filter. The first fluid channel outlet and the fluid channel inlet are arranged on opposite sides of the top of the cylinder head, and such a fluid inlet and outlet arrangement not only ensures that the fluid can be filtered, but also provides convenience for the fluid filtration arrangement.

[0023] Optionally, a mounting bracket is provided on the top of the outer side of the cylinder head.

[0024] From the above, the setting of the mounting frame enables the filter to be smoothly installed in other refrigeration units, and the installation is simple and convenient.

[0025] Optionally, the filter layer is provided with materials and number of layers according to the filter grade.

[0026] From the above, different filter materials are selected according to different materials and precision requirements to ensure that the filter element can play the required filtering role and achieve the specified cleanliness.

[0027] Optionally, small holes are provided around the side wall of the cylinder of the first limiting ring.

[0028] From the above, since the side wall of the cylinder of the first limiting ring is surrounded by small holes and is connected to the open clamping ring of the upper end cover, the filtered fluid can flow out of the interior of the filter element through the small holes, and the side walls of the cylinder of the second limiting ring are made of stainless steel without any small holes, the second limiting ring is in close contact with the sealing rubber pad, which can prevent the unfiltered fluid from mixing with the filtered fluid and ensure that the fluid can flow out of the interior of the filter element smoothly without overflowing.

[0029] In summary, the filter for the replaceable refrigeration unit provided in the present application has a spring welded at the bottom of the filter element. When installing and removing the filter element, it is no longer necessary to reserve enough space at the bottom of the filter; in order to prevent the filter element from shifting during installation, a limit ring is welded inside the cylinder cover of the filter, and the clamping ring of the upper end cover of the filter element can be quickly positioned by clamping on the limit ring; put the filter element into the cylinder body, just align it with the limit ring on the cylinder cover, and the cylinder body and the cylinder cover can be fitted, and then the clamping operation can be performed to complete all steps, and the installation is easy. The filter has been subjected to performance tests and vibration tests, and the performance meets the requirements. It is easy to install and the overall volume of the refrigeration unit is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The various technical features of the present application and the relationship between them are further explained below with reference to the accompanying drawings. The accompanying drawings are exemplary, and some technical features are not shown in actual proportion. In addition, some drawings may omit technical features that are commonly used in the technical field to which the present application belongs and are not essential for understanding and implementing the present application, or additional technical features that are not essential for understanding and implementing the present application may be shown. In other words, the combination of the various technical features shown in the accompanying drawings is not used to limit the present application. In addition, throughout the present application, the same figure numbers refer to the same content. The specific description of the drawings is as follows:

[0031] Figure 1 is a cross-sectional view of a replaceable filter for a refrigeration unit in the present application;

[0032] Figure 2 It is a schematic diagram of the filter element structure of a replaceable filter for a refrigeration unit in the present application.

[0033] Description of Reference Numerals

[0034] 1-cylinder head, 101-first limiting ring, 102-second limiting ring, 103-mounting frame, 2-hoop, 3-filter element, 301-upper end cover, 3011-clamp, 302-filter element body, 303-lower cover, 3031-spring, 4-cylinder body.

[0035] The above drawings have shown clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0036] The preferred embodiments of the present application are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present application can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present application.

[0037] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "include..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0038] In the filter used in the refrigeration unit, the filter needs to be disassembled for replacement or cleaning. The existing filter has a pull rod in the middle of the filter element, which is connected to the cylinder cover by threads to fix the filter element and the cylinder cover, and then the cylinder body and the cylinder cover are connected by a clamp to form a seal. The pull rod type filter requires a large space. When installing the filter, the space below the filter must be reserved for the length of the pull rod and the length of the cylinder body before the cylinder body can be removed. The pull rod must be removed first before the filter element can be removed, and the operation steps are cumbersome.

[0039] In the existing solution, if you want to replace or clean the filter element, you need to first loosen the clamp, remove the cylinder body, and then remove the pull rod to achieve the purpose. The operation steps are somewhat cumbersome.

[0040] The technical solution of the present application and how the technical solution of the present application solves the above-mentioned technical problems are described in detail below with specific embodiments. The specific embodiments described below can be combined with each other to form new embodiments. The same or similar ideas or processes described in one embodiment may not be repeated in other embodiments. The embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0041] Figure 1 The cross-sectional structure of a replaceable filter for a refrigeration unit in the present application is shown. A replaceable filter for a refrigeration unit includes:

[0042] The filter element 3 comprises an upper end cover 301, a filter element body 302 and a lower cover 303, wherein the upper end cover 301 is fixedly connected to the upper end of the filter element body 302, and the lower cover 303 is fixedly connected to the lower end of the filter element body 302, and a snap ring 3011 protruding toward the outside of the filter element body 302 is provided at the top center of the upper end cover 301, and a groove recessed toward the inside of the filter element body 302 is provided at the bottom center of the lower cover 303, and a spring 3031 is fixedly connected to the groove;

[0043] The cylinder head 1 has a limiting ring at its inner center, and the limiting ring is connected to the clamping ring 3011;

[0044] A cylinder body 4 containing the filter element 3 connected to the cylinder head 1;

[0045] The clamp 2 is used to fix the contact parts of the cylinder head 1 and the cylinder body 4.

[0046] Specifically, a spring 3031 is welded on the lower cover 303 at the bottom of the filter element body 302. The spring 3031 is in contact with the cylinder body 4 and has a certain amount of compression, which saves space at the bottom of the cylinder body 4. When the filter element 3 is installed, the cylinder body 4 and the cylinder cover 1 are connected and sealed by the clamp 2. The spring 3031 will give the filter element 3 an upward force. In order to prevent the filter element 3 from shifting during installation, a limiting ring is welded inside the cylinder cover 1 of the filter. The retaining ring 3011 on the upper end cover 301 on the upper part of the filter element body 302 can be quickly positioned by being clamped on the limiting ring, and the installation and disassembly steps are simplified.

[0047] Optionally, the limiting ring includes a first limiting ring 101 and a second limiting ring 102 , the first limiting ring 101 is arranged inside the second limiting ring 102 , and the two are concentrically arranged at the center of the cylinder head 1 .

[0048] Specifically, the clamping ring 3011 is clamped inside the first limiting ring 101. The first limiting ring 101 is set as a small diameter cylinder, and the second limiting ring 102 is set as a large diameter cylinder. The first limiting ring 101 and the second limiting ring 102 are both in contact with the sealing rubber pad to prevent the liquid from flowing out, thereby ensuring the airtightness of the filter element 3 and the cylinder head 1.

[0049] Optionally, a mounting frame 103 is provided on the top of the outer side of the cylinder head 1 .

[0050] Specifically, the installation of the mounting frame 103 enables the filter to be smoothly installed in other refrigeration units, and the installation is simple and convenient.

[0051] Optionally, the filter layer is provided with materials and number of layers according to the filter grade.

[0052] Specifically, different filter materials are selected according to different materials and precision requirements to ensure that the filter element 3 can play the required filtering role and achieve its specified cleanliness.

[0053] Optionally, small holes are provided around the side wall of the cylinder of the first limiting ring 101 .

[0054] Specifically, since the first limiting ring 101 is provided with small holes around the side wall of the cylinder and is connected to the open retaining ring 3011 of the upper end cover 301, the filtered fluid can flow out of the interior of the filter element 3 through the small holes, and the side walls of the cylinder of the second limiting ring 102 are made of stainless steel and are not provided with any small holes, the second limiting ring 102 is in close contact with the sealing rubber gasket, which can prevent the unfiltered fluid from mixing with the filtered fluid and ensure that the fluid can flow out of the interior of the filter element 3 smoothly without overflowing.

[0055] Optionally, a fluid channel inlet is provided on the inner side wall of the top of the cylinder head 1, and the fluid enters the interior of the filter through the fluid channel inlet, and sequentially passes through the filter screen, the filter layer and the filter frame on the filter element body 302 to enter the interior of the filter element body 302;

[0056] A first fluid channel outlet is provided on the inner side wall of the top of the cylinder head 1 at a position opposite to the position of the fluid channel inlet;

[0057] A second fluid channel outlet is provided at the same horizontal position of the second limiting ring 102 as the first fluid channel outlet, and the fluid filtered by the filter element body 302 flows out through the second fluid channel outlet and the first fluid channel outlet in sequence.

[0058] Specifically, the cylinder head 1 is provided with a second limiting ring 102 and a first limiting ring 101 in sequence, wherein the second limiting ring 102 is a stainless steel cylinder, and the first limiting ring 101 is a stainless steel cylinder with a circle full of small holes. The second limiting ring 102 is arranged concentrically with the first limiting ring 101, and the diameter of the second limiting ring 102 is larger than the diameter of the first limiting ring 101; the second fluid channel outlet is provided on the upper part of the second limiting ring 102 to facilitate the filtered fluid to flow out of the filter element body, and the first limiting ring 101 is surrounded by small holes to facilitate the filtered fluid to flow out of the filter. The first fluid channel outlet and the fluid channel inlet are arranged on the opposite side of the top of the cylinder head 1. Such a fluid inlet and outlet arrangement not only ensures that the fluid can be filtered, but also provides convenience for the fluid filtration arrangement.

[0059] Optionally, a sealing rubber pad is provided at a position of the upper end cover 301 other than the retaining ring 3011 , and when the filter element 3 is connected to the cylinder cover 1 through the elastic force of the spring 3031 , the sealing rubber pad is in sealing contact with the limiting ring.

[0060] Specifically, the sealing rubber pad can prevent the liquid from flowing out, thereby preventing the unfiltered fluid from mixing with the filtered fluid.

[0061] Optionally, the clamping ring 3011 is configured to be open and communicate with the interior of the filter element body 302 .

[0062] Specifically, the retaining ring 3011 is set to be open so that when the unfiltered fluid flows into the interior of the filter, it passes through the layer-by-layer filtering effect of the filter element body 302, purifies the liquid, and then enters the interior of the filter element body 302, and then easily flows out of the filter.

[0063] Optionally, the filter element body 302 includes a filter element skeleton, a filter layer and a filter screen, wherein the filter element skeleton supports the filter layer and the filter screen in sequence.

[0064] Specifically, the innermost layer of the filter element body 302 is the filter element skeleton, which can not only protect the filter layer and the filter screen from damage due to external bumps, but also prevent the filter layer and the filter screen from bending and deforming due to pressure shock during work; directly covering the filter element skeleton is the filter layer, which ensures that the filter element 3 can play the required filtering role and achieve its specified cleanliness; the filter layer is covered with a layer of filter screen to maintain the process shape of the filter layer, so that the filter layer is evenly and fully in contact with the working medium, thereby improving the filtering effect.

[0065] Figure 2 is a schematic diagram of the filter element structure, such as Figure 2 As shown, the filter element 3 is composed of an upper end cover 301, a filter element body 302 and a lower cover 303. The upper end cover 301 and the lower cover 303 are respectively installed at the upper end and the lower end of the filter element body 302. An open snap ring 3011 is provided at the center of the upper end cover 301, and the snap ring 3011 is connected to the inside of the filter element body 302; a groove concave to the inside is provided at the center of the lower cover 303, and a spring 3031 is fixedly connected in the groove. Due to the retractability of the spring 3031, the space at the bottom of the cylinder body 4 and the filter element 3 can be compressed, saving the space inside the cylinder body 4. The first layer inside the filter element body 302 is the filter element skeleton, which is made of stainless steel and is covered with small holes around it to facilitate the flow of fluid; the second layer inside the filter element body 302, that is, the layer covering the filter element skeleton is the filter layer, which filters smaller impurities in the fluid; the third layer of the filter element body 302, that is, the outermost layer is the filter screen, which can support the filter material so that the filter material will not deform or be damaged under the pressure difference, maintain the process shape of the filter material, and make the filter material evenly and fully contact the working medium, so as to improve the filtering effect.

[0066] In a specific embodiment of the present application, the filter is composed of a cylinder head 1, a clamp 2, a filter element 3 and a cylinder body 4. In the cross-sectional view of the filter, a mounting frame is provided on the top of the cylinder head 1, and the mounting frame 103 is composed of two flat plates in a right-angle structure, one of which is fixedly connected to the top outer side of the cylinder head 1, and the other is fixedly connected to the refrigeration unit; a pipe is passed through the upper part of the cylinder head 1, and the pipe is a fluid pipe. The fluid flows into the filter from the fluid pipe on one side of the cylinder head 1 and flows out of the filter from the fluid pipe on the other side of the cylinder head 1, completing the filtering operation. Two cylinders of different diameters are arranged in sequence at the central position inside the cylinder head 1. The cylinder at the most central position is covered with many small holes, which is the first limiting ring 101, which can not only clamp the clamping ring 3011 arranged on the upper end cover 301 of the filter element 3, but also serve as an outlet for the fluid to flow out of the interior of the filter element 3; the outer cylinder is the second limiting ring 102, and the cylinder of the second limiting ring 102 is a stainless steel sealing structure. After contacting with the sealing rubber gasket on the upper end cover 301 of the filter element 3, the second limiting ring 102 and the upper end of the filter element 3 form a closed structure, and the fluid passes through the clamping ring 3011, flows into between the first limiting ring 101 and the second limiting ring 102, and then flows out through the second fluid channel outlet at the upper part of the second limiting ring 102.

[0067] In the cross-sectional view of the filter, a spring 3031 is installed at the bottom of the filter element 3, and the spring 3031 may have a diameter of 30 mm and a wire diameter of 2 mm to match the size of the filter element 3. After the filter element 3 is inserted into the cylinder body 4, the spring 3031 at the bottom of the filter element 3 provides an upward supporting force for the filter element 3, and the clamping ring 3011 on the upper end cover 301 of the filter element 3 is clamped in the first limiting ring 101 inside the cylinder head 1, which can not only prevent the filter element 3 from deviating due to shaking during installation, but also provide positioning for the installation of the filter element 3. The clamp 2 connects the contact parts of the cylinder cover 1 and the cylinder body 4 together, ensuring the airtightness of the filter; in addition, when the filter is disassembled, the clamp 2 is unscrewed, the filter element 3 and the cylinder cover 1 will bounce upward under the action of the bottom spring 3031, and the retaining ring 3011 on the upper end of the filter element 3 and the first limiting ring 101 inside the cylinder cover 1 are pulled apart to complete the disassembly of the filter element 3. The operation steps are simple and quick, and can save space for the installation and disassembly of the filter.

[0068] In summary, the filter for the replaceable refrigeration unit provided in the present application has a spring welded at the bottom of the filter element. When installing and removing the filter element, it is no longer necessary to reserve enough space at the bottom of the filter; in order to prevent the filter element from shifting during installation, a limit ring is welded inside the cylinder cover of the filter, and the clamping ring of the upper end cover of the filter element can be quickly positioned by clamping on the limit ring; put the filter element into the cylinder body, just align it with the limit ring on the cylinder cover, and the cylinder body and the cylinder cover can be fitted, and then the clamping operation can be performed to complete all steps, and the installation is easy. The filter has been subjected to performance tests and vibration tests, and the performance meets the requirements. It is easy to install and the overall volume of the refrigeration unit is reduced.

[0069] Unless otherwise defined, all technical and scientific terms used in this application are the same as those generally understood by those skilled in the art to which this application belongs. If there is any inconsistency, the meaning described in the full text of this application or the meaning derived from the content recorded in the full text of this application shall prevail. In addition, the terms used in this description are only for the purpose of describing the embodiments of the present application and are not intended to limit the present application.

[0070] Note that the above are only preferred embodiments of the present application and the technical principles used. Those skilled in the art will understand that the present application 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 protection scope of the present application. Therefore, although the present application is described in more detail through the above embodiments, the present application is not limited to the above embodiments, and may also include more other equivalent embodiments without departing from the technical concept of the present application, all of which belong to the protection scope of the present application.

[0071] The above description is only an embodiment of the present application and does not limit the patent scope of the present application. Any equivalent structural transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A replaceable filter for a refrigeration unit, characterized in that: include: A filter element, comprising an upper end cover, a filter element body and a lower cover, wherein the upper end cover is fixedly connected to the upper end of the filter element body, the lower cover is fixedly connected to the lower end of the filter element body, and a snap ring protruding toward the outside of the filter element body is provided at the center of the top of the upper end cover, and a groove recessed toward the inside of the filter element body is provided at the center of the bottom of the lower cover, and a spring is fixedly connected to the groove; A cylinder head, wherein a limiting ring is provided at the inner center thereof, and the limiting ring is connected to the clamping ring; a cylinder body, which contains the filter element connected to the cylinder head; A clamp is used to fix the contact parts of the cylinder head and the cylinder body.

2. The replaceable filter for a refrigeration unit according to claim 1, characterized in that: A sealing rubber pad is provided at a position of the upper end cover except for the clamping ring. When the filter element is connected to the cylinder cover through the elastic force of the spring, the sealing rubber pad is in sealing contact with the limiting ring.

3. The replaceable filter for a refrigeration unit according to claim 2, characterized in that: The clamping ring is configured to be open and communicated with the interior of the filter element body.

4. The replaceable filter for a refrigeration unit according to claim 1, characterized in that: The limiting ring includes a first limiting ring and a second limiting ring, the first limiting ring is arranged inside the second limiting ring, and the two are concentrically arranged at the center of the cylinder cover.

5. The replaceable filter for a refrigeration unit according to claim 1, characterized in that: The filter element body comprises a filter element frame, a filter layer and a filter screen, wherein the filter element frame supports the filter layer and the filter screen in sequence.

6. The replaceable filter for a refrigeration unit according to claim 4, characterized in that: A fluid channel inlet is provided on the inner side wall of the top of the cylinder head, and the fluid enters the interior of the filter through the fluid channel inlet, and then enters the interior of the filter element body through the filter screen, the filter layer and the filter element frame on the filter element body in sequence; A first fluid channel outlet is provided on the inner side wall of the cylinder head top at a position opposite to the fluid channel inlet; A second fluid channel outlet is provided on the second limiting ring at the same horizontal position as the first fluid channel outlet, and the fluid filtered by the filter element body flows out through the second fluid channel outlet and the first fluid channel outlet in sequence.

7. The replaceable filter for a refrigeration unit according to claim 1, characterized in that: A mounting frame is arranged on the top of the outer side of the cylinder cover.

8. The replaceable filter for a refrigeration unit according to claim 5, characterized in that: The filter layer is provided with materials and number of layers according to the filter grade.

9. The replaceable filter for a refrigeration unit according to claim 4, characterized in that: Small holes are arranged around the side wall of the cylinder of the first limiting ring.

Images