Compressor and refrigeration apparatus

Abstract

The utility model relates to refrigeration equipment technical field provides a kind of compressor and refrigeration equipment, cylinder cover is formed on its peripheral edge step structure, step structure is formed with step surface along horizontal direction;Silencer includes accommodating cavity and the opening being communicated with accommodating cavity, the edge of opening extends to form crimping surface in horizontal direction, cylinder cover is inserted in accommodating cavity and is fixed with silencer;Crimping surface is crimped on step surface, sealing element is clamped between the two, sealing element realizes the sealing around the axis of cylinder cover.Silencer is used to reduce the airflow noise and mechanical vibration noise generated in the operation process of compressor, silencer is sleeved on the outside of cylinder cover, when cylinder cover is assembled with silencer along the axial direction, cylinder cover is only partially inserted in accommodating cavity, sealing element is clamped between the step surface of cylinder cover and the crimping surface of silencer, so the sealing between the circumferential edge of silencer and cylinder cover is completed, improve the sealing performance between the two, can reduce the oil output rate of compressor.

Description

Technical Field

[0001] This utility model relates to the field of refrigeration equipment technology, and in particular to a compressor and refrigeration equipment. Background Technology

[0002] The rotary compressor silencer and cylinder head employ a radial sealing method, achieved through an interference fit between the outer edge of the cylinder head and the inner wall of the silencer. In addition to this interference fit, three rectangular notches are designed at the lower edge of the silencer to accommodate deformation during assembly. During compressor operation, the gaps created by the deformation of these three notches negatively impact the silencer's sealing performance, leading to leakage at the notch locations.

[0003] Therefore, there is an urgent need for a compressor and refrigeration equipment to solve the above-mentioned technical problems. Utility Model Content

[0004] The purpose of this invention is to provide a compressor and refrigeration equipment that can improve the sealing performance between the muffler and the cylinder head.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] Compressor, including:

[0007] The cylinder head has a stepped structure formed on its peripheral edge, and the stepped structure has a stepped surface in the horizontal direction.

[0008] The muffler includes a receiving cavity and an opening communicating with the receiving cavity. The edge of the opening extends in the horizontal direction to form a pressing surface. The cylinder head is inserted into the receiving cavity and fixed to the muffler.

[0009] The sealing element is pressed against the stepped surface, and the sealing element is sandwiched between the two, thereby achieving a seal around the axis of the cylinder head.

[0010] As a preferred technical solution of the above-mentioned compressor, the stepped structure includes a first end face, a second end face and a third end face. The first end face, the second end face and the third end face are parallel and distributed sequentially along the axial direction of the cylinder head. The second end face is the stepped surface and is formed on the outer peripheral side of the first end face.

[0011] As a preferred technical solution of the above-mentioned compressor, in the axial direction of the cylinder head, the dimension of the cylinder head is H, the depth of the accommodating cavity of the muffler is H1, the distance between the second end face and the third end face is H2, and the dimension of the seal is H3, satisfying that H1+H2+H3<H.

[0012] As a preferred technical solution for the above-mentioned compressor, the above-mentioned sealing element is an O-ring or a circular gasket.

[0013] As a preferred technical solution for the compressor, the stepped surface is a plane, and the width of the stepped surface, the width of the seal, and the width of the pressing surface are all equal.

[0014] As a preferred technical solution for the compressor, the stepped surface is provided with a groove, the sealing element is disposed in the groove, and the pressing surface can press the sealing element against the bottom of the groove.

[0015] As a preferred technical solution of the above-mentioned compressor, the cylinder head further includes a journal, and the muffler includes a bottom wall and a first peripheral side wall. The first peripheral side wall is connected end to end to form a cylindrical structure. The first peripheral side wall and the bottom wall are fixed to form the accommodating cavity. In the axial direction of the cylinder head, the journal abuts against the bottom wall of the muffler.

[0016] As a preferred technical solution for the above-mentioned compressor, the bottom wall of the muffler is provided with a boss protruding into the accommodating cavity, and the end of the journal of the cylinder head abuts against the boss along the axial direction of the cylinder head.

[0017] As a preferred technical solution of the above-mentioned compressor, a second circumferential sidewall is formed between the second end face and the first end face, and the outer surface of the second circumferential sidewall is in clearance fit with the inner wall of the muffler.

[0018] A refrigeration device is also provided, including the compressor described above.

[0019] The beneficial effects of this utility model are:

[0020] This utility model provides a compressor and refrigeration equipment. The compressor includes a cylinder head, a muffler, and a seal. The cylinder head has a stepped structure on its peripheral edge, with the stepped structure having a stepped surface along the horizontal direction. The muffler includes a receiving cavity and an opening communicating with the receiving cavity. The edge of the opening extends horizontally to form a pressing surface. The cylinder head is inserted into the receiving cavity and fixed to the muffler. The pressing surface is pressed against the stepped surface, and the seal is sandwiched between the two, achieving a seal around the axis of the cylinder head.

[0021] For example, a muffler is a device used to reduce airflow noise and mechanical vibration noise generated during the operation of a compressor. The muffler is sleeved on the outside of the cylinder head. When the cylinder head is assembled with the muffler along the axial direction, the cylinder head is only partially inserted into the receiving cavity. A sealing element is sandwiched between the stepped surface of the cylinder head and the pressing surface of the muffler, thus completing the circumferential edge sealing between the muffler and the cylinder head, improving the sealing performance between the two, and reducing the oil output rate of the compressor. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of this utility model and these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the cylinder head structure provided in an embodiment of the present utility model;

[0024] Figure 2 This is a schematic diagram of the structure of the silencer provided in this embodiment of the utility model;

[0025] Figure 3 This is a schematic diagram of the structure of the silencer provided in this embodiment of the utility model;

[0026] Figure 4 This is a schematic diagram of the structure of a compressor provided in one embodiment of the present invention. Figure 1 ;

[0027] Figure 5 This is a schematic diagram of the structure of a compressor provided in one embodiment of the present invention. Figure 2 ;

[0028] Figure 6 This is a schematic diagram of the compressor provided in another embodiment of the present invention.

[0029] In the picture:

[0030] 1. Cylinder head; 11. Stepped structure; 111. First end face; 112. Second end face; 113. Third end face; 114. Groove; 115. Second circumferential sidewall; 12. Journal;

[0031] 2. Silencer; 2a. Bottom wall; 2b. First circumferential side wall; 21. Receiving cavity; 22. Pressing surface; 23. Boss;

[0032] 3. Sealing components. Detailed Implementation

[0033] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0034] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0035] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0036] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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 utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0037] like Figures 1 to 6 As shown, this utility model provides a compressor, including a cylinder head 1, a muffler 2, and a seal 3. The cylinder head 1 has a stepped structure 11 formed on its peripheral edge, and the stepped structure 11 has a stepped surface in the horizontal direction. The muffler 2 includes a receiving cavity 21 and an opening communicating with the receiving cavity 21. The edge of the opening extends horizontally to form a pressing surface 22. The cylinder head 1 is inserted into the receiving cavity 21 and fixed to the muffler 2. The pressing surface 22 is pressed against the stepped surface, and the seal 3 is sandwiched between the two, achieving a seal around the axis of the cylinder head 1.

[0038] For example, the muffler 2 is a device used to reduce airflow noise and mechanical vibration noise generated during the operation of the compressor. The muffler 2 is sleeved on the outside of the cylinder head 1. When the cylinder head 1 is assembled with the muffler 2 along the axial direction, the cylinder head 1 is only partially inserted into the receiving cavity 21. A sealing element 3 is sandwiched between the stepped surface of the cylinder head 1 and the pressing surface 22 of the muffler 2, thus completing the circumferential edge sealing between the muffler 2 and the cylinder head 1, improving the sealing performance between the two, and reducing the oil output rate of the compressor.

[0039] For example, the opening edge of the muffler 2 is folded outward and extends horizontally to form a pressing surface 22.

[0040] Optionally, the stepped structure 11 includes a first end face 111, a second end face 112 and a third end face 113. The first end face 111, the second end face 112 and the third end face 113 are parallel and distributed sequentially along the axial direction of the cylinder head 1. The second end face 112 is formed on the outer peripheral side of the first end face 111.

[0041] Optionally, along the axial direction of the cylinder head 1, the dimension of the cylinder head 1 is H, the depth of the receiving cavity 21 of the muffler 2 is H1, the distance between the second end face 112 and the third end face 113 is H2, and the dimension of the seal 3 is H3, satisfying that H1 + H2 + H3 < H. This ensures a good sealing effect between the muffler 2, the seal 3, and the cylinder head 1, and also ensures that no leakage occurs between the muffler 2 and the journal 12 of the cylinder head 1.

[0042] Furthermore, the muffler 2 also includes a fourth end face, which abuts against the first end face 111 in the axial direction of the cylinder head 1 when the pressing surface 22 and the second end face 112 are in contact with each other.

[0043] Optionally, seal 3 is made of rubber.

[0044] With this configuration, the seal 3 can undergo elastic deformation. When the cylinder head 1 and the muffler 2 are assembled along the axial direction of the cylinder head 1, the seal 3 is squeezed by the second end face 112 and the pressing surface 22, and can undergo elastic deformation, thereby filling the gap between the second end face 112 and the pressing surface 22 to form a seal.

[0045] Optionally, seal 3 can be an O-ring or a ring gasket.

[0046] Optionally, the step surface is a plane, and the width of the step surface, the width of the seal 3, and the width of the pressing surface 22 are all equal.

[0047] For example, both the second end face 112 and the pressing surface 22 are planes. When the muffler 2 is assembled with the cylinder head 1, the second end face 112 and the pressing surface 22 are parallel. The projection of the second end face 112, the pressing surface 22 and the seal 3 on the axial direction of the cylinder head 1 are all annular and all centered on the axis of the cylinder head 1. The inner diameter of the second end face 112 is r1 and the outer diameter is R1. The inner diameter of the pressing surface 22 is r2 and the outer diameter is R2. The inner diameter of the seal 3 is r3 and the outer diameter is R3, satisfying that r1 = r2 = r3; R1 = R2 = R3.

[0048] Optionally, the stepped surface is provided with a groove 114, the sealing element 3 is disposed in the groove 114, and the pressing surface 22 can press the sealing element 3 against the bottom of the groove 114.

[0049] For example, the second end face 112 is provided with a groove 114. The depth direction of the groove 114 is parallel to the axial direction of the cylinder head 1. The cross-section of the groove 114 is U-shaped and includes a first wall, a second wall and a third wall. The first wall and the third wall are arranged parallel to each other and are radial to the cylinder head 1. The third wall is located outside the first wall. The second wall connects the first wall and the third wall. The second wall serves as the bottom of the groove 114. The first wall and the third wall are the two side walls of the groove 114.

[0050] like Figure 4 and Figure 5 As shown, in one embodiment, the seal 3 is completely disposed within the groove 114, that is, the thickness of the seal 3 is less than the depth of the groove 114. When the muffler 2 is assembled with the cylinder head 1, the pressing surface 22 of the muffler 2 can be at least partially inserted into the groove 114 along the axial direction, so that the seal 3 abuts against the bottom of the groove 114.

[0051] like Figure 6 As shown, in another embodiment, the seal 3 is only partially located in the groove 114, and the other part extends out of the groove 114. That is, the thickness of the seal 3 is greater than the depth of the groove 114. When the muffler 2 is assembled with the cylinder head 1, the seal 3 is sandwiched between the pressing surface 22 and the second end face 112. The pressing surface 22 compresses the seal 3, so that the seal 3 abuts against the bottom of the groove 114.

[0052] Optionally, the cylinder head 1 also includes a journal 12, and the muffler 2 includes a bottom wall 2a and a first peripheral side wall 2b. The first peripheral side wall 2b is connected end to end to form a cylindrical structure. The first peripheral side wall 2b and the bottom wall 2a are fixed to form a receiving cavity 21. In the axial direction of the cylinder head 1, the journal 12 abuts against the bottom wall 2a of the muffler 2. In this way, a seal is achieved between the journal 12 and the bottom of the muffler 2 through the abutment.

[0053] Optionally, the bottom wall 2a of the muffler 2 is provided with a boss 23 protruding into the accommodating cavity 21, and the end of the journal 12 of the cylinder head 1 abuts against the boss 23 along the axial direction of the cylinder head 1.

[0054] For example, the boss 23 is arranged in a ring around the axis of the cylinder head 1, and the end of the journal 12 of the cylinder head 1 abuts against the boss 23, which can reduce the contact area between the journal 12 and the bottom wall 2a of the muffler 2, and reduce the process requirements for the journal 12 and / or the muffler 2.

[0055] Preferably, the radial cross section of the boss 23 is semi-circular, that is, the surface of the boss 23 is arc-shaped.

[0056] Optionally, a second circumferential sidewall 115 is formed between the second end face 112 and the first end face 111, and the outer surface of the second circumferential sidewall 115 is clearance-fitted with the inner wall of the muffler 2.

[0057] For example, when the muffler 2 is assembled with the cylinder head 1, the cylinder head 1 is inserted into the muffler 2 along the axial direction, and the clearance fit between the second circumferential side wall 115 and the first circumferential side wall 2b makes it easier for the cylinder head 1 to be assembled with the muffler 2.

[0058] A refrigeration device is also provided, including the compressor described above.

[0059] Furthermore, the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the protection scope of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention, the scope of which is determined by the scope of the appended claims.

Claims

1. A compressor, characterized in that, include: Cylinder head (1), wherein a stepped structure (11) is formed on its peripheral edge, and the stepped structure (11) has a stepped surface in the horizontal direction; The muffler (2) includes a receiving cavity (21) and an opening communicating with the receiving cavity (21). The edge of the opening extends in the horizontal direction to form a pressing surface (22). The cylinder head (1) is inserted into the receiving cavity (21) and fixed to the muffler (2). The sealing element (3) is pressed against the stepped surface by the pressing surface (22), and the sealing element (3) is sandwiched between the two, and the sealing element (3) achieves a seal around the axis of the cylinder head (1).

2. The compressor according to claim 1, characterized in that, The stepped structure (11) includes a first end face (111), a second end face (112), and a third end face (113). The first end face (111), the second end face (112), and the third end face (113) are parallel and distributed sequentially along the axial direction of the cylinder head (1). The second end face (112) is the stepped surface and is formed on the outer periphery of the first end face (111).

3. The compressor according to claim 2, characterized in that, Along the axial direction of the cylinder head (1), the cylinder head (1) has a dimension of H, the muffler (2) has a depth of cavity (21) of cavity (21) of cavity (21) of cavity (2) of cavity (21) of cavity (2) of cavity (21) of cavity (2) of cavity (2) of cavity (2) of cavity (2) of cavity (2) of cavity (2) of cavity (2) of cavity (3) of cavity (3) of cavity (3) of cavity (3) of cavity (2 ...2) of cavity (3) of cavity (2) of cavity (2) of cavity (2) of cavity (2) of cavity (2) of cavity (2) of cavity (2) of cavity (2) of 4. The compressor according to claim 1, characterized in that, The sealing element (3) is an O-ring or a circular gasket.

5. The compressor according to claim 1, characterized in that, The step surface is a plane, and the width of the step surface, the width of the seal (3), and the width of the pressing surface (22) are all equal.

6. The compressor according to claim 1, characterized in that, The stepped surface has a groove (114), the sealing element (3) is disposed in the groove (114), and the pressing surface (22) can press the sealing element (3) against the bottom of the groove (114).

7. The compressor according to claim 1, characterized in that, The cylinder head (1) also includes a journal (12), and the muffler (2) includes a bottom wall (2a) and a first peripheral side wall (2b). The first peripheral side wall (2b) is connected end to end to form a cylindrical structure. The first peripheral side wall (2b) and the bottom wall (2a) are fixed to form the accommodating cavity (21). In the axial direction of the cylinder head (1), the journal (12) abuts against the bottom wall (2a) of the muffler (2).

8. The compressor according to claim 7, characterized in that, The bottom wall (2a) of the muffler (2) is provided with a boss (23) protruding into the accommodating cavity (21), and the end of the journal (12) of the cylinder head (1) abuts against the boss (23) along the axial direction of the cylinder head (1).

9. The compressor according to claim 2, characterized in that, A second circumferential sidewall (115) is formed between the second end face (112) and the first end face (111), and the outer surface of the second circumferential sidewall (115) is in clearance fit with the inner wall of the muffler (2).

10. A refrigeration device, characterized in that, Includes the compressor described in any one of claims 1-9.

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