Compressor cylinder cover structure capable of preventing high-pressure leakage

Abstract

The utility model discloses a compressor cylinder cover structure capable of preventing high-pressure leakage, and relates to the technical field of refrigeration refrigerator compressors. An annular sealing face is arranged on the surface of the side, close to the valve plate, of the air cylinder cover body, an air suction cavity and an exhaust cavity are formed in the surface of the side, close to the valve plate, of the air cylinder cover body, the annular sealing face is located on the periphery of a whole formed by the air suction cavity and the exhaust cavity, and the surface of the side, close to the air cylinder cover body, of the air suction cavity is arranged to be an auxiliary sealing face. The annular sealing face is flush with the auxiliary sealing face, and the air suction cavity is provided with an air inlet outer pipe extending out of the air cylinder cover body. The sliding sleeve sleeves the outer part of the air inlet outer pipe in a threaded manner; the upper surface of the silencer upper cover is provided with an air inlet inner pipe, the air inlet inner pipe is located in an air inlet outer pipe, the outer circumferential wall face of the air inlet inner pipe is attached to the inner circumferential wall face of the air inlet outer pipe, and the bottom of the sliding sleeve is connected with the upper surface of the silencer upper cover in a clamped mode. And the connection strength and stability between the cylinder cover body and the silencer upper cover are enhanced.

Description

Technical Field

[0001] This utility model relates to the field of refrigeration refrigerator compressor technology, specifically to a compressor cylinder head structure that prevents high-pressure leakage. Background Technology

[0002] The refrigeration compressor is one of the core components of a refrigeration system. Its main function is to compress low-pressure gaseous refrigerant into high-pressure gas, propelling the refrigerant through the system to transfer heat and lower the temperature. It plays a vital role in refrigeration equipment such as air conditioners, refrigerators, cold storage facilities, and cold chain transportation.

[0003] In the prior art, a compressor cylinder head structure with high-pressure leakage prevention, disclosed in publication number CN215256699U, includes a cylinder head body. The cylinder head body has an annular sealing surface, an intake chamber, and an exhaust chamber. The intake and exhaust chambers are located inside the annular sealing surface, and a partition plate is provided between them. A second sealing surface is located at the end of the partition plate closest to the cylinder. The annular sealing surface and the second sealing surface are on the same plane. An air inlet is provided on the side wall of the cylinder head body. A muffler exhaust pipe is provided on the muffler cover, and the muffler exhaust pipe is fixed and connected to the intake pipe. This simplifies the installation of the intake muffler, solves the high-pressure leakage problem of the original structure, and further improves the performance and reliability of the compressor.

[0004] However, in the existing technology, the intake pipe and the muffler exhaust pipe are fixed and connected to each other. The fixing and connection points need to bear the weight of the cylinder head body and the muffler cover, and even the cylinder and the muffler, resulting in low connection strength at the fixing and connection points of the intake pipe and the muffler exhaust pipe. Utility Model Content

[0005] To address the aforementioned technical problems, this application solves the problem in the prior art where the intake pipe and the muffler exhaust pipe are fixed and connected to each other, and the fixing and connection points need to bear the weight of the cylinder head body and the muffler cover, and even the cylinder and the muffler, resulting in low connection strength at the fixing and connection points between the intake pipe and the muffler exhaust pipe.

[0006] To achieve the above objectives, the technical solution adopted in this application is as follows: a compressor cylinder head structure for preventing high-pressure leakage, characterized in that: it includes a valve plate, a cylinder head body, a sliding sleeve, and a muffler cover; the valve plate is connected to the cylinder head body; an annular sealing surface is provided on the surface of the cylinder head body near the valve plate; an intake chamber and an exhaust chamber are also provided on the surface of the cylinder head body near the valve plate; the annular sealing surface is located around the perimeter of the integral formed by the intake chamber and the exhaust chamber; the surface of the intake chamber near the cylinder head body is provided as an auxiliary sealing surface, and the annular sealing surface is flush with the auxiliary sealing surface; the intake chamber has an intake pipe extending to the outside of the cylinder head body.

[0007] The sliding sleeve is threaded onto the outside of the air intake pipe;

[0008] The upper surface of the muffler cover is provided with an inner air intake pipe, which is located inside the outer air intake pipe. The outer peripheral wall of the inner air intake pipe is in contact with the inner peripheral wall of the outer air intake pipe. The bottom of the sliding sleeve is connected to the upper surface of the muffler cover by a snap-fit ​​connection.

[0009] To better realize this utility model, an annular groove is further provided on the outer peripheral wall surface of the bottom of the air intake inner pipe, and a sealing ring is sleeved inside the annular groove.

[0010] To better realize this utility model, a stop plate is further provided at the top edge of the sliding sleeve, and a first spring is sleeved on the tube body of the air intake pipe located between the cylinder head body and the stop plate.

[0011] To better realize this utility model, the bottom of the sliding sleeve is provided with a plurality of annular locking blocks, and the plurality of annular locking blocks are arranged in an equally spaced, annular array with the center of rotation of the sliding sleeve as the center.

[0012] To better realize this utility model, the upper surface of the muffler cover is provided with a plurality of annular snap-fit ​​grooves, and the plurality of annular snap-fit ​​grooves are arranged in an equally spaced, annular array with the center of the air intake pipe as the rotation center.

[0013] The plurality of annular snap-fit ​​blocks are respectively inserted into the plurality of annular snap-fit ​​slots. Each of the top openings at one end of the plurality of annular snap-fit ​​slots is provided with a baffle to restrict the movement of the annular snap-fit ​​block along the length direction of the air intake pipe. Each of the other ends of the plurality of annular snap-fit ​​slots is provided with a locking component to restrict the movement of the annular snap-fit ​​block along the annular direction of the annular snap-fit ​​slot.

[0014] To better realize this utility model, the locking assembly further includes a relief groove, a top cover plate, a relief slider, a transition portion, a guide head, and a second spring. The relief groove is provided on the inner wall surface of the other end of the plurality of annular snap-fit ​​grooves, and the top opening of the relief groove is provided with a top cover plate. The relief groove and the top cover plate cooperate to form a sliding area. The relief slider is slidably disposed in the sliding area. A transition portion is provided on the upper surface of the end of the relief slider away from the sliding area. A guide head is provided on the top of the transition portion, and the side wall surface of the guide head near the air intake pipe is a semi-circular arc surface. A second spring is provided between the inner wall surface of the relief groove away from the air intake pipe and the relief slider.

[0015] To better realize this utility model, the guide head is further made of ultra-high molecular weight polyethylene.

[0016] The technical solution provided by this utility model has the following advantages compared with the prior art:

[0017] 1. This utility model, through the coordinated design of the valve plate, cylinder head body, sliding sleeve and muffler cover, on the one hand, ensures the sealing between the exhaust chamber and the intake outer pipe; on the other hand, while ensuring the sealing between the intake outer pipe and the intake inner pipe, it strengthens the connection strength between the cylinder head body and the muffler cover, as well as the stability between the cylinder head body and the muffler cover.

[0018] 2. The present invention features an annular groove on the outer peripheral wall of the bottom of the inner intake pipe, and a sealing ring is fitted inside the annular groove to ensure the sealing between the outer intake pipe and the inner intake pipe.

[0019] 3. The present invention features a stop plate at the top edge of the sliding sleeve, and a first spring is fitted on the intake pipe located between the cylinder head body and the stop plate to further lock the stop plate and prevent the intake pipe from loosening and falling off.

[0020] 4. This utility model features multiple annular snap-fit ​​blocks at the bottom of the sliding sleeve, arranged in a ring array with equal intervals around the center of the sliding sleeve, and multiple annular snap-fit ​​grooves correspondingly opened on the upper surface of the muffler cover, arranged in a ring array with equal intervals around the center of the intake inner pipe. This design makes the connection between the cylinder head body and the muffler cover more convenient, faster, and more stable.

[0021] 5. This utility model, through the design of the locking component including a relief groove, an upper cover plate, a relief slider, a transition part, a guide head, and a second spring, restricts the movement of the annular locking block along the annular direction of the annular locking groove, and has a simple and practical structure.

[0022] 6. The present invention avoids hard contact between the annular snap-fit ​​block and the guide head by designing the guide head to be made of ultra-high molecular weight polyethylene, thereby improving the service life of the annular snap-fit ​​block and the guide head. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0025] Figure 2 for Figure 1 Exploded view;

[0026] Figure 3 This is a schematic diagram of the valve plate in this utility model;

[0027] Figure 4 This is a schematic diagram of the structure of the cylinder head body in this utility model;

[0028] Figure 5 This is a schematic diagram of the sliding sleeve in this utility model;

[0029] Figure 6 This is a schematic diagram of the structure of the muffler cover in this utility model;

[0030] Figure 7 for Figure 6 Top view;

[0031] Figure 8 for Figure 7 Sectional view at point AA.

[0032] In the diagram: 100-valve plate; 200-cylinder head body; 201-annular sealing surface; 202-intake chamber; 203-exhaust chamber; 204-intake outer pipe; 205-first spring; 206-auxiliary sealing surface; 300-sliding sleeve; 301-butt plate; 302-annular snap-fit ​​block; 400-muffler top cover; 401-intake inner pipe; 402-sealing ring; 403-annular snap-fit ​​groove; 404-locking assembly; 4041-relief groove; 4042-top cover plate; 4043-relief slider; 4044-transition part; 4045-guide head; 4046-second spring. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0034] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0035] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0036] In the description of this application, it should be noted that the use of terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" to indicate orientation or positional relationships is based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationships commonly used when the product is in use. These terms are used solely for the convenience of describing this application and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the use of terms such as "first" and "second" in the description of this application is only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0037] Furthermore, the use of terms such as "horizontal" and "vertical" in the description of this application does not imply that the component is required to be absolutely horizontal or suspended, but rather that it may be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but rather that it may be slightly tilted.

[0038] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0039] Example 1

[0040] like Figures 1 to 7 As shown, a compressor cylinder head structure for preventing high-pressure leakage includes a valve plate 100, a cylinder head body 200, a sliding sleeve 300, and a muffler cover 400. The valve plate 100 is connected to the cylinder head body 200. An annular sealing surface 201 is provided on the surface of the cylinder head body 200 near the valve plate 100. An intake chamber 202 and an exhaust chamber 203 are also provided on the surface of the cylinder head body 200 near the valve plate 100. The annular sealing surface 201 is located around the perimeter of the integral formed by the intake chamber 202 and the exhaust chamber 203. An auxiliary sealing surface 206 is provided on the surface of the intake chamber 202 near the cylinder head body 200, and the annular sealing surface 201 is flush with the auxiliary sealing surface 206. The intake chamber 202 has an intake outer pipe 204 extending to the outside of the cylinder head body 200.

[0041] The sliding sleeve 300 is threaded onto the outside of the air intake outer pipe 204;

[0042] The upper surface of the muffler cover 400 is provided with an inner air intake pipe 401, which is located inside the outer air intake pipe 204. The outer peripheral wall of the inner air intake pipe 401 is in contact with the inner peripheral wall of the outer air intake pipe 204. The bottom of the sliding sleeve 300 is connected to the upper surface of the muffler cover 400 by a snap-fit ​​connection.

[0043] Through the coordinated design of the valve plate 100, cylinder head body 200, sliding sleeve 300 and muffler cover 400, on the one hand, the sealing between the exhaust chamber 203 and the intake outer pipe 204 is ensured; on the other hand, while ensuring the sealing between the intake outer pipe 204 and the intake inner pipe 401, the connection strength between the cylinder head body 200 and the muffler cover 400, as well as the stability between the cylinder head body 200 and the muffler cover 400, are strengthened.

[0044] like Figure 2 and Figure 6 As shown, in this embodiment, an annular groove is provided on the outer peripheral wall surface of the bottom of the air intake inner pipe 401, and a sealing ring 402 is sleeved inside the annular groove.

[0045] The design of an annular groove on the outer peripheral wall of the bottom of the inner intake pipe 401, with a sealing ring 402 fitted inside the annular groove, ensures the sealing between the outer intake pipe 204 and the inner intake pipe 401.

[0046] like Figure 2 , Figure 4 and Figure 5 As shown, in this embodiment, a stop plate 301 is provided at the top edge of the sliding sleeve 300, and a first spring 205 is sleeved on the tube body of the intake pipe 204 located between the cylinder head body 200 and the stop plate 301.

[0047] The design of a stop plate 301 provided at the top edge of the sliding sleeve 300, and a first spring 205 sleeved on the air intake pipe 204 located between the cylinder head body 200 and the stop plate 301, further locks the stop plate 301 and prevents the air intake pipe 204 from loosening and falling off the stop plate 301.

[0048] like Figure 1 , Figure 2 and Figure 5 As shown, in this embodiment, the bottom of the sliding sleeve 300 is provided with a plurality of annular snap-fit ​​blocks 302, and the plurality of annular snap-fit ​​blocks 302 are arranged in an equally spaced, annular array with the center of rotation of the sliding sleeve 300 as the center of rotation.

[0049] like Figure 1 , Figure 2 , Figure 5 , Figure 6 and Figure 7 As shown, in this embodiment, the upper surface of the muffler cover 400 is provided with a plurality of annular snap-fit ​​grooves 403, and the plurality of annular snap-fit ​​grooves 403 are arranged in an equally spaced, annular array with the center of the air intake pipe 401 as the rotation center.

[0050] Multiple annular snap-fit ​​blocks 302 are respectively inserted into multiple annular snap-fit ​​slots 403. Each annular snap-fit ​​slot 403 has a baffle at the top opening of one end of each annular snap-fit ​​block 302 to restrict the movement of the annular snap-fit ​​block 302 along the length direction of the air intake inner pipe 401. Each annular snap-fit ​​slot 403 has a locking component 404 at the other end of each annular snap-fit ​​slot 403 to restrict the movement of the annular snap-fit ​​block 302 along the annular direction of the annular snap-fit ​​slot 403.

[0051] The sliding sleeve 300 has multiple annular snap-fit ​​blocks 302 at its bottom, and these blocks are arranged in a ring array with equal intervals around the center of the sliding sleeve 300. The muffler cover 400 has multiple annular snap-fit ​​grooves 403 on its upper surface, also arranged in a ring array with equal intervals around the center of the intake pipe 401. This design makes the connection between the cylinder head body 200 and the muffler cover 400 more convenient, faster, and more stable.

[0052] like Figures 1 to 8 As shown, in this embodiment, the locking assembly 404 includes a relief groove 4041, an upper cover plate 4042, a relief slider 4043, a transition portion 4044, a guide head 4045, and a second spring 4046. The relief groove 4041 is provided on the inner wall surface of the other end of each of the plurality of annular snap-fit ​​grooves 403, and the upper cover plate 4042 is provided at the top opening of the relief groove 4041. The relief groove 4041 and the upper cover plate 4042 cooperate to form a sliding area. The retraction slider 4043 is slidably disposed in the sliding area. A transition portion 4044 is provided on the upper surface of the end of the retraction slider 4043 away from the sliding area. A guide head 4045 is provided on the top of the transition portion 4044. The side wall of the guide head 4045 near the inner air intake pipe 401 is a semi-circular arc surface. A second spring 4046 is provided between the inner wall of the retraction groove 4041 away from the inner air intake pipe 401 and the retraction slider 4043.

[0053] The locking assembly 404, which includes a relief groove 4041, an upper cover plate 4042, a relief slider 4043, a transition part 4044, a guide head 4045, and a second spring 4046, restricts the movement of the annular snap-fit ​​block 302 along the annular snap-fit ​​groove 403. The locking assembly 404 is simple in structure and practical.

[0054] like Figures 1 to 8 As shown, in this embodiment, the guide head 4045 is made of ultra-high molecular weight polyethylene.

[0055] By designing the guide head 4045 to be made of ultra-high molecular weight polyethylene, hard contact between the annular snap-fit ​​block 302 and the guide head 4045 is avoided, thereby improving the service life of the annular snap-fit ​​block 302 and the guide head 4045.

[0056] In addition, the guide head 4045 can also be configured as a hollow structure, filled with inert gas. This further avoids hard contact between the annular retaining block 302 and the guide head 4045, thereby improving the service life of both the annular retaining block 302 and the guide head 4045.

[0057] Working principle:

[0058] During installation, first, fit the first spring 205 onto the outer intake pipe 204, then screw the sliding sleeve 300 onto the outer intake pipe 204 (internal and external thread connection). Next, insert the inner intake pipe 401 of the muffler cover 400 into the outer intake pipe 204, lift the first spring 205, and screw the sliding sleeve 300 so that the annular locking block 302 can be smoothly inserted into the annular locking groove 403. (During this process, the annular locking block 302 contacts the guide head 4045 of the locking assembly 404, generating a downward thrust. Since the guide head 4045 is a semi-circular arc surface, the guide head 4045 obtains a yielding force away from the inner intake pipe 401 until the annular locking block 302 can be smoothly inserted into the annular locking groove 403.) (Inside the groove 403), then screw the sliding sleeve 300 so that one end of the annular snap block 302 of the sliding sleeve 300 abuts against the end of the annular snap groove 403 below the baffle (during this process, the annular snap block 302 does not apply a downward force to the guide head 4045, and the guide head 4045 is reset under the action of the second spring 4046, so that the guide head 4045 extends out of the retraction space and restricts the circumferential rotation of the annular snap block 302). Then, make the first spring 205 abut against the abutment plate 301 to form a locking state (of course, a nut can also be set between the first spring 205 and the abutment plate 301, or further apply thread glue between the air intake outer pipe 204 and the abutment plate 301).

[0059] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A compressor cylinder head structure for preventing high-pressure leakage, characterized in that: The cylinder head assembly includes a valve plate (100), a cylinder head body (200), a sliding sleeve (300), and a muffler cover (400). The valve plate (100) is connected to the cylinder head body (200). An annular sealing surface (201) is provided on the surface of the cylinder head body (200) near the valve plate (100). An intake chamber (202) and an exhaust chamber (203) are also provided on the surface of the cylinder head body (200) near the valve plate (100). The annular sealing surface (201) is located around the entire structure formed by the intake chamber (202) and the exhaust chamber (203). The surface of the intake chamber (202) near the cylinder head body (200) is configured as an auxiliary sealing surface (206), and the annular sealing surface (201) is flush with the auxiliary sealing surface (206). The intake chamber (202) has an intake manifold (204) extending to the outside of the cylinder head body (200). The sliding sleeve (300) is threaded onto the outside of the air intake outer pipe (204); The upper surface of the muffler cover (400) is provided with an inner air intake pipe (401), which is located inside the outer air intake pipe (204). The outer peripheral wall of the inner air intake pipe (401) is in contact with the inner peripheral wall of the outer air intake pipe (204). The bottom of the sliding sleeve (300) is connected to the upper surface of the muffler cover (400) by a snap-fit ​​connection.

2. The compressor cylinder head structure for preventing high-pressure leakage according to claim 1, characterized in that: An annular groove is provided on the outer peripheral wall of the bottom of the air intake inner pipe (401), and a sealing ring (402) is fitted inside the annular groove.

3. The compressor cylinder head structure for preventing high-pressure leakage according to claim 2, characterized in that: A stop plate (301) is provided at the top edge of the sliding sleeve (300), and a first spring (205) is sleeved on the tube body of the intake pipe (204) located between the cylinder head body (200) and the stop plate (301).

4. The compressor cylinder head structure for preventing high-pressure leakage according to claim 3, characterized in that: The bottom of the sliding sleeve (300) is provided with a plurality of annular snap-fit ​​blocks (302), and the plurality of annular snap-fit ​​blocks (302) are arranged in an equally spaced, annular array with the center of rotation of the sliding sleeve (300) as the center of rotation.

5. A compressor cylinder head structure for preventing high-pressure leakage according to claim 4, characterized in that: The upper surface of the muffler cover (400) is provided with a plurality of annular snap-fit ​​grooves (403), and the plurality of annular snap-fit ​​grooves (403) are arranged in an equally spaced, annular array with the center of the air intake pipe (401) as the rotation center. Multiple annular snap-fit ​​blocks (302) are respectively inserted into multiple annular snap-fit ​​grooves (403). Each annular snap-fit ​​groove (403) has a baffle at the top opening of one side end to restrict the movement of the annular snap-fit ​​block (302) along the length direction of the air intake pipe (401). Each annular snap-fit ​​groove (403) has a locking component (404) at the other side end to restrict the movement of the annular snap-fit ​​block (302) along the annular direction of the annular snap-fit ​​groove (403).

6. A compressor cylinder head structure for preventing high-pressure leakage according to claim 5, characterized in that: The locking assembly (404) includes a relief groove (4041), a top cover plate (4042), a relief slider (4043), a transition portion (4044), a guide head (4045), and a second spring (4046). The relief groove (4041) is provided on the inner wall surface of the other end of each of the plurality of annular snap-fit ​​grooves (403), and the top opening of the relief groove (4041) is provided with a top cover plate (4042). The relief groove (4041) and the top cover plate (4042) cooperate to form a sliding area. The slider (4043) is slidably disposed in the sliding area. A transition portion (4044) is provided on the upper surface of the end of the retracting slider (4043) away from the sliding area. A guide head (4045) is provided on the top of the transition portion (4044). The side wall of the guide head (4045) near the air intake pipe (401) is a semi-circular arc surface. A second spring (4046) is provided between the inner wall of the retracting groove (4041) away from the air intake pipe (401) and the retracting slider (4043).

7. A compressor cylinder head structure for preventing high-pressure leakage according to claim 6, characterized in that: The guide head (4045) is made of ultra-high molecular weight polyethylene.

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