Motor base and compressor

Abstract

The embodiment of the utility model relates to the technical field of gas compression, in particular to a motor base and a compressor, and the motor base comprises a base body, a pressure release valve and a filter part. The seat body comprises a front surface and a back surface which are oppositely arranged, the front surface is provided with a back pressure cavity, one side of the back pressure cavity is provided with a mounting hole, the mounting hole extends from the front surface to the back surface, and fluid can flow between the mounting hole and the back pressure cavity; the pressure release valve is arranged in the mounting hole; the filter part is arranged in the mounting hole and arranged on the side, facing the front face, of the pressure release valve, the filter part is used for filtering fluid flowing from the back pressure cavity to the pressure release valve, blockage of impurities to the pressure release valve is reduced, the pressure release valve is not prone to being too high in pressure of the back pressure cavity due to blockage, and the pressure release valve is not prone to being blocked. Therefore, normal operation of the compressor is ensured.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of gas compression technology. Background Art

[0002] A scroll compressor is a mechanical device that compresses gas using the principle of scroll motion. A backpressure chamber is located between the rotating disk and the motor base of a scroll compressor to provide back pressure to the rotating disk. This chamber is connected to a pressure relief valve to adjust the pressure within the chamber. However, the pressure relief valve has a small aperture, and impurities in the backpressure chamber can easily clog the valve, preventing the pressure from being released, which can cause compressor failure. Utility Model Content

[0003] In view of the above problems, embodiments of the present application provide a motor base and a compressor, which overcome the above problems or at least partially solve the above problems.

[0004] According to one aspect of an embodiment of the present application, a motor base is provided, including a base body, the base body including a front and a back side arranged opposite to each other, the front side being provided with a back pressure chamber, a mounting hole being provided on one side of the back pressure chamber, the mounting hole extending from the front side toward the back side, and fluid can flow between the mounting hole and the back pressure chamber; a pressure relief valve is arranged in the mounting hole; a filter element is arranged in the mounting hole, and the filter element is arranged on the side of the pressure relief valve facing the front side, and the filter element is used to filter the fluid flowing from the back pressure chamber to the pressure relief valve.

[0005] In an optional manner, the filter element includes a filter screen and a rim, the rim is arranged around the filter screen, and the rim is connected to the hole wall of the mounting hole.

[0006] In an optional embodiment, the filter screen includes a bottom and a side, the bottom is connected to one end of the side facing the pressure relief valve, the edging is connected to one end of the side facing away from the pressure relief valve, and there is a gap between the side and the wall of the mounting hole.

[0007] In an optional manner, the effective passage area of the filter screen is at least 5 times the cross-sectional area of the working hole of the pressure relief valve.

[0008] In an optional manner, the filter screen and the edging are respectively made of metal.

[0009] In an optional manner, the seat body is provided with a pressure relief channel, one end of the pressure relief channel is communicated with the back pressure chamber, and the other end of the pressure relief channel is communicated with the mounting hole.

[0010] In an optional embodiment, the seat body is further provided with a buffer cavity, one end of the buffer cavity passes through the front side and is connected to the pressure relief channel, and the other end of the buffer cavity extends toward the back side to be connected to the mounting hole; wherein the cross-sectional area of the buffer cavity is larger than the cross-sectional area of the mounting hole.

[0011] In an optional embodiment, the seat body is further provided with a discharge hole, one end of the discharge hole passes through the back side, and the other end of the discharge hole extends toward the front side to be connected with the mounting hole; wherein, the aperture of the mounting hole is larger than the aperture of the discharge hole, and the mounting hole is provided with a stepped surface at one end toward the discharge hole, and the pressure relief valve abuts against the stepped surface.

[0012] In an optional manner, the motor base further includes a sealing ring, which is sleeved outside the pressure relief valve and abuts against the wall of the mounting hole.

[0013] According to another aspect of the embodiments of the present application, a compressor is provided, comprising the above-mentioned motor base.

[0014] The beneficial effects of the embodiments of the present application include: the seat body is provided with a connected back pressure chamber and a mounting hole, the pressure relief valve and the filter element are respectively arranged in the mounting hole, the filter element is used to filter the fluid flowing from the back pressure chamber to the pressure relief valve, reducing the blockage of the working hole of the pressure relief valve by impurities, and the pressure relief valve is not easily blocked, resulting in excessive pressure in the back pressure chamber, thereby ensuring the normal operation of the compressor. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] One or more embodiments are exemplarily illustrated by pictures in the corresponding drawings. These exemplifications do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings are represented as similar elements. Unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0016] Figure 1 It is a schematic diagram of one direction of the motor base provided by an embodiment of the present application;

[0017] Figure 2 The embodiment of this application provides Figure 1 Cross-sectional view of the middle SS;

[0018] Figure 3 This embodiment of the present application provides Figure 2 A is an enlarged schematic diagram;

[0019] Figure 4 is a schematic diagram of the motor base provided in another direction according to an embodiment of the present application;

[0020] Figure 5 It is a cross-sectional view of the compressor provided in an embodiment of the present application. DETAILED DESCRIPTION

[0021] In order to facilitate understanding of the present application, the present application is described in more detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that when an element is described as "fixed to" another element, it can be directly on the other element, or there can be one or more centered elements therebetween. When an element is described as "connected to" another element, it can be directly connected to the other element, or there can be one or more centered elements therebetween. The terms "vertical", "horizontal", "left", "right", "inside", "outside" and similar expressions used in this specification are for illustrative purposes only.

[0022] Unless otherwise defined, all technical and scientific terms used in this specification have the same meanings as those commonly understood by those skilled in the art to which this application belongs. The terms used in this specification are for the purpose of describing specific embodiments only and are not intended to limit this application. The term "and / or" as used in this specification includes any and all combinations of one or more of the relevant listed items.

[0023] The present application embodiment provides a motor base 30, see Figure 1 、 Figure 2 and Figure 3 The motor base 30 includes a base body 301, a pressure relief valve 302 and a filter element 303. The base body 301 includes a front and a back side that are arranged opposite to each other. The base body 301 is provided with a back pressure chamber 3011 and a mounting hole 3012. The mounting hole 3012 is provided on one side of the back pressure chamber 3011. The back pressure chamber 3011 is provided on the front side. The mounting hole 3012 extends from the front side toward the back side. Fluid can flow between the mounting hole 3012 and the back pressure chamber 3011. The pressure relief valve 302 and the filter element 303 are respectively provided in the mounting hole 3012, and the filter element 303 is provided on the side of the pressure relief valve 302 facing the front side. The filter element 303 is used to filter the fluid flowing from the back pressure chamber 3011 to the pressure relief valve 302.

[0024] By setting a filter element 303 at the inlet end 3021 of the pressure relief valve 302, the filter element 303 is used to filter the fluid flowing from the back pressure chamber 3011 to the pressure relief valve 302, thereby reducing the blockage of the working hole 3023 of the pressure relief valve 302 by impurities. The pressure relief valve 302 is not easily blocked, which may cause the pressure in the back pressure chamber 3011 to be too high, thereby extending the service life of the compressor.

[0025] The filter element 303 includes a filter screen 3031 and a rim 3032. The rim 3032 surrounds the filter screen 3031 and abuts against the wall of the mounting hole 3012. The filter screen 3031 is used to prevent impurities from entering the working hole 3023 of the pressure relief valve 302.

[0026] In some embodiments, the filter 3031 includes a bottom portion 303a and a side portion 303b. The bottom portion 303a is connected to the end of the side portion 303b facing the pressure relief valve 302, and the edging 3032 is connected to the end of the side portion 303b facing away from the pressure relief valve 302. A gap is provided between the side portion 303b and the wall of the mounting hole 3012 to facilitate fluid flow through the filter 3031. The provision of the bottom portion 303a and the side portion 303b increases the contact area between the fluid and the filter 3031, thereby enhancing the filtering effect of the filter 3031 on the fluid.

[0027] The cross-sectional area of the working hole 3023 of the pressure relief valve 302 is the cross-sectional area of the working hole 3023 along its radial direction. The filter screen 3031 is provided with multiple filter holes (not shown). The effective flow area of the filter screen 3031 is the sum of the effective flow areas of the multiple filter holes. The effective flow area of the filter holes is the area through which fluid passes through the filter holes. The effective flow area of the filter screen 3031 is at least five times the cross-sectional area of the working hole 3023 of the pressure relief valve 302, thereby more effectively preventing impurities from entering the working hole 3023 of the pressure relief valve 302.

[0028] In some embodiments, the filter pores in the filter element 303 have a 100-mesh diameter, meaning there are 100 pores per inch (2.54 cm). This configuration effectively prevents impurities from entering the working hole 3023 of the pressure relief valve 302. In some embodiments, the filter 3031 and the edging 3032 are each made of metal to ensure the strength of the filter 3031 and extend its service life.

[0029] In some embodiments, the seat body 301 is provided with a pressure relief channel 3013, one end of the pressure relief channel 3013 is connected to the back pressure chamber 3011, and the other end of the pressure relief channel 3013 is connected to the mounting hole 3012, and the filter element 303 is arranged between the pressure relief valve 302 and the pressure relief channel 3013.

[0030] In some embodiments, the base body 301 further includes a buffer chamber 3014, which is in communication with an end of the mounting hole 3012 away from the pressure relief valve 302. The filter element 303 is disposed between the pressure relief valve 302 and the buffer chamber 3014. By providing the buffer chamber 3014, impurities in the high-pressure gas in the back-pressure chamber 3011 are filtered by the filter element 303 and can then enter the buffer chamber 3014. As a result, the filter element 303 is less likely to become clogged, thereby increasing the service life of the filter element 303.

[0031] In some embodiments, the cross-sectional area of the buffer chamber 3014 is larger than the cross-sectional area of the mounting hole 3012, so that impurities in the high-pressure gas in the back pressure chamber 3011 can be filtered by the filter element 303 and stored in the buffer chamber 3014, so that the filter element 303 is less likely to be blocked, which can further increase the service life of the filter element 303.

[0032] The cross-sectional area of the buffer cavity 3014 is the area of the buffer cavity 3014 for fluid to pass through, and the cross-sectional area of the mounting hole 3012 is the cross-sectional area of the mounting hole 3012 along its radial direction.

[0033] In some embodiments, the base 301 is further provided with a discharge hole 3016. One end of the discharge hole 3016 extends through the back surface of the base 301, and the other end of the discharge hole 3016 extends toward the front surface to communicate with the mounting hole 3012. The mounting hole 3012 has a larger diameter than the discharge hole 3016. A stepped surface 3015 extends from the base 301 toward the mounting hole 3012, abutting the gas relief end 3022 of the pressure relief valve 302. When the pressure relief valve 302 is installed in the mounting hole 3012, the gas within the back pressure chamber 3011 exerts a certain impact force on the pressure relief valve 302. By providing the stepped surface 3015 to abut the gas relief end 3022 of the pressure relief valve 302, the pressure relief valve 302 is less likely to be pushed out of the mounting hole 3012 by the impact force of the gas, thereby reducing the risk of failure of the pressure relief valve 302.

[0034] In some embodiments, the motor base 30 further includes a sealing ring 304, which is sleeved over the pressure relief valve 302 and abuts against the wall of the mounting hole 3012. The provision of the sealing ring 304 provides a sealed connection between the pressure relief valve 302 and the mounting hole 3012, thereby preventing oil from leaking between the outer wall of the pressure relief valve 302 and the wall of the mounting hole 3012, thereby preventing pressure relief in the back pressure chamber 3011.

[0035] See also Figure 4The seat body 301 includes a main body 301a and an end portion 301b. The end portion 301b is disposed around the main body 301a. The back pressure chamber 3011 is located in the main body 301a, and the mounting hole 3012 is located in the end portion 301b. The pressure relief channel 3013 is formed on a surface 301f of the end portion 301b, which faces away from the pressure relief valve 302. This arrangement facilitates the molding and processing of the pressure relief channel 3013.

[0036] In the embodiment of the present application, the pressure relief valve 302 and the filter element 303 are both arranged in the mounting hole 3012, and the filter element 303 is arranged at the inlet end 3021 of the pressure relief valve 302. The filter element 303 is used to filter the fluid flowing from the back pressure chamber 3011 to the pressure relief valve 302, thereby reducing the blockage of the working hole 3023 of the pressure relief valve 302 by impurities. The pressure relief valve 302 is not easily blocked, resulting in excessive pressure in the back pressure chamber 3011, thereby extending the service life of the motor base 30.

[0037] The present application also provides an embodiment of a compressor 100, such as Figure 5 As shown, the compressor 100 includes a rotor plate 10, a stator plate 20, the motor base 30, and a power mechanism 60. One end of the rotor plate 10 is engaged with the stator plate 20, and the motor base 30 is disposed at the other end of the rotor plate 10. The power mechanism 60 is disposed within the motor base 30 and is connected to the end of the rotor plate 10 facing away from the stator plate 20. The power mechanism 60 can drive the rotor plate 10 to move relative to the stator plate 20.

[0038] The specific structure and function of the motor base 30 can be found in the above-described embodiments and will not be detailed here. The specific structure and function of the other components of the compressor 100 can be found in the prior art and will not be detailed here. By incorporating the motor base 30 of the present embodiment into the compressor 100, the blockage of the pressure relief valve 302 in the motor base 30 by impurities can be reduced, thereby extending the service life of the compressor 100.

[0039] It should be noted that the preferred embodiments of the present application are given in the specification and drawings of this application. However, the present application can be implemented in many different forms and is not limited to the embodiments described in this specification. These embodiments are not intended to be additional limitations on the content of this application. The purpose of providing these embodiments is to make the understanding of the disclosure of this application more thorough and comprehensive. In addition, the above-mentioned technical features can be combined with each other to form various embodiments not listed above, which are all considered to be within the scope of the description of this application; further, it is obvious to those skilled in the art that improvements or changes can be made based on the above description, and all such improvements and changes should fall within the scope of protection of the claims attached to this application.

Claims

1. A motor base, characterized in that: include: A seat body, the seat body comprising a front and a back side arranged opposite to each other, the front side being provided with a back pressure cavity, a mounting hole being provided on one side of the back pressure cavity, the mounting hole extending from the front side toward the back side, and fluid being able to flow between the mounting hole and the back pressure cavity; a pressure relief valve, disposed in the mounting hole; A filter element is arranged in the mounting hole and is arranged on the side of the pressure relief valve facing the front side. The filter element is used to filter the fluid flowing from the back pressure chamber to the pressure relief valve.

2. The motor base according to claim 1, characterized in that: The filter element includes a filter screen and a rim, wherein the rim is arranged around the filter screen and is connected to the hole wall of the mounting hole.

3. The motor base according to claim 2, characterized in that: The filter screen includes a bottom and a side, the bottom is connected to one end of the side facing the pressure relief valve, the edging is connected to one end of the side facing away from the pressure relief valve, and there is a gap between the side and the hole wall of the mounting hole.

4. The motor base according to claim 3, characterized in that: The effective passage area of the filter screen is at least 5 times the cross-sectional area of the working hole of the pressure relief valve.

5. The motor base according to claim 2, characterized in that: The filter screen and the edging are respectively made of metal.

6. The motor base according to claim 1, characterized in that: The seat body is provided with a pressure relief channel, one end of the pressure relief channel is communicated with the back pressure chamber, and the other end of the pressure relief channel is communicated with the mounting hole.

7. The motor base according to claim 6, characterized in that: The seat body is further provided with a buffer cavity, one end of which passes through the front surface and communicates with the pressure relief channel, and the other end of which extends toward the back surface and communicates with the mounting hole; Wherein, the cross-sectional area of the buffer cavity is larger than the cross-sectional area of the mounting hole.

8. The motor base according to any one of claims 1 to 7, characterized in that: The base body is further provided with a discharge hole, one end of which passes through the back surface, and the other end of which extends toward the front surface to communicate with the mounting hole; The diameter of the mounting hole is larger than that of the discharge hole, and a stepped surface is provided at one end of the mounting hole facing the discharge hole, and the pressure relief valve abuts against the stepped surface.

9. The motor base according to any one of claims 1 to 7, characterized in that: It also includes a sealing ring, which is sleeved outside the pressure relief valve and abuts against the hole wall of the installation hole.

10. A compressor, characterized in that: Comprising the motor base according to any one of claims 1-9.

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