Compressor and refrigeration equipment

Abstract

The invention relates to the technical field of refrigeration equipment, and provides a compressor and refrigeration equipment. A step structure is formed on the peripheral edge of a cylinder cover, and a step surface is formed on the step structure in the horizontal direction; the silencer comprises a containing cavity and an opening communicated with the containing cavity, the edge of the opening extends in the horizontal direction to form a pressing connection face, and the cylinder cover is inserted into the containing cavity and fixed to the silencer. The pressing connection face is pressed on the step face, the sealing piece is clamped between the pressing connection face and the step face, and sealing around the axis of the cylinder cover is achieved through the sealing piece. The silencer is a device used for reducing airflow noise and mechanical vibration noise generated in the operation process of the compressor, the silencer is arranged on the outer side of the cylinder cover in a sleeving mode, when the cylinder cover and the silencer are assembled in the axial direction, only part of the cylinder cover is inserted into the containing cavity, and a sealing piece is clamped between the step face of the cylinder cover and the compression joint face of the silencer. In this way, sealing of the circumferential edge between the silencer and the cylinder cover is completed, the sealing performance between the silencer and the cylinder cover is improved, and the oil extraction rate of the compressor can be reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of refrigeration equipment, and in particular to a compressor and refrigeration equipment. Background Art

[0002] The rotor-type compressor muffler and cylinder head utilize a radial seal, achieved through an interference fit between the outer edge of the cylinder head and the inner wall of the muffler. Three rectangular notches are designed on the lower edge of the muffler to accommodate deformation during assembly. During compressor operation, the gaps created by the deformation of these three notches can negatively impact the muffler's seal, leading to leakage at these notches.

[0003] Therefore, there is an urgent need for a compressor and a refrigeration device to solve the above technical problems. Summary of the Invention

[0004] The object of the present invention is to provide a compressor and a refrigeration device, which can improve the sealing performance between the muffler and the cylinder head.

[0005] To achieve this object, the present invention adopts the following technical solutions:

[0006] Compressor, including:

[0007] A cylinder head, wherein the cylinder head has a step structure formed on its peripheral edge, and the step structure has a step surface formed in the horizontal direction;

[0008] A muffler, the muffler comprising a receiving chamber and an opening communicating with the receiving chamber, the edge of the opening extending in the horizontal direction to form a press-fit surface, the cylinder head being inserted into the receiving chamber and fixed to the muffler;

[0009] The sealing member, wherein the pressing surface is pressed against the step surface, and the sealing member is sandwiched between the two, and the sealing member realizes sealing around the axis of the cylinder head.

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

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

[0012] As a preferred technical solution of the above-mentioned compressor, the above-mentioned sealing member is an O-ring or an annular gasket.

[0013] As a preferred technical solution of the compressor, the step surface is a plane, and the width of the step surface, the width of the sealing member, and the width of the crimping surface are all equal.

[0014] As a preferred technical solution of the compressor, the step surface is provided with a groove, the sealing member is arranged in the groove, and the pressing surface can make the sealing member abut against the bottom of the groove.

[0015] As a preferred technical solution for the above-mentioned compressor, the above-mentioned cylinder head also includes a shaft neck portion, the above-mentioned muffler includes a bottom wall and a first circumferential side wall, the above-mentioned first circumferential side wall is connected end to end to form a cylindrical structure, the above-mentioned first circumferential side wall is fixed to the above-mentioned bottom wall to form the above-mentioned accommodating cavity, and in the axial direction of the above-mentioned cylinder head, the above-mentioned shaft neck portion abuts against the above-mentioned bottom wall of the above-mentioned muffler.

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

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

[0018] A refrigeration device is also provided, comprising the above-mentioned compressor.

[0019] Beneficial effects of the present invention:

[0020] The present invention provides a compressor and refrigeration equipment. The compressor includes a cylinder head, a muffler, and a seal. The cylinder head has a stepped structure formed on its peripheral edge, with the stepped structure forming 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 press-fit surface. The cylinder head is inserted into the receiving cavity and fixed to the muffler. The press-fit surface is pressed against the stepped surface, and the seal is sandwiched between the two, thereby achieving a seal around the axis of the cylinder head.

[0021] For example, the muffler is a device used to reduce the airflow noise and mechanical vibration noise generated during the operation of the 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 accommodating cavity. A seal is clamped between the step surface of the cylinder head and the crimping surface of the muffler. In this way, the circumferential edge sealing between the muffler and the cylinder head is completed, the sealing performance between the two is improved, and the oil output rate of the compressor can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in describing the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without any creative work.

[0023] Figure 1 is a schematic structural diagram of a cylinder head provided by an embodiment of the present invention;

[0024] Figure 2 1 is a schematic structural diagram of a muffler provided in an embodiment of the present invention;

[0025] Figure 3 1 is a schematic structural diagram of a muffler provided in an embodiment of the present invention;

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

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

[0028] Figure 6 It is a structural schematic diagram of a compressor provided by another embodiment of the present invention.

[0029] In the picture:

[0030] 1. Cylinder head; 11. Step structure; 111. First end surface; 112. Second end surface; 113. Third end surface; 114. Groove; 115. Second peripheral side wall; 12. Shaft neck;

[0031] 2. Muffler; 2a. Bottom wall; 2b. First peripheral side wall; 21. Accommodation cavity; 22. Pressing surface; 23. Boss;

[0032] 3. Seals. DETAILED DESCRIPTION

[0033] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It will be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all structures.

[0034] In the description of the present invention, unless otherwise expressly specified or limited, the terms "connected," "connected," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention in specific circumstances.

[0035] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0036] In the description of this embodiment, the terms "upper," "lower," "right," and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely for ease of description and simplified operation. They do not indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meanings.

[0037] like Figures 1 to 6 As shown, the present invention provides a compressor comprising 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, with the stepped structure 11 forming a stepped surface along 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 crimping surface 22. The cylinder head 1 is inserted into the receiving cavity 21 and fixed to the muffler 2. The crimping surface 22 is crimped onto the stepped surface, with the seal 3 sandwiched between the two, thereby achieving a seal around the axis of the cylinder head 1.

[0038] For example, the muffler 2 is a device for reducing the 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 accommodating cavity 21. A seal 3 is clamped between the step surface of the cylinder head 1 and the crimping surface 22 of the muffler 2. In this way, the sealing of the circumferential edge between the muffler 2 and the cylinder head 1 is completed, the sealing performance between the two is improved, and the oil output rate of the compressor can be reduced.

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

[0040] Optionally, the step structure 11 includes a first end face 111, a second end face 112 and a third end face 113, which are parallel to each other and distributed in sequence in the axial direction of the cylinder head 1, and the second end face 112 is formed on the outer peripheral side of the first end face 111.

[0041] Optionally, in the axial direction of the cylinder head 1, the dimension of the cylinder head 1 is H, the depth of the accommodating 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 H3 of the seal 3 satisfies the following relationship: H1 + H2 + H3 < H. In this way, the sealing effect between the muffler 2, the seal 3, and the cylinder head 1 can be ensured, and leakage between the muffler 2 and the journal portion 12 of the cylinder head 1 can be prevented.

[0042] Furthermore, the muffler 2 further includes a fourth end surface. When the crimping surface 22 abuts the second end surface 112 in the axial direction of the cylinder head 1 , the fourth end surface abuts the first end surface 111 in the axial direction of the cylinder head 1 .

[0043] Optionally, the sealing member 3 is a rubber member.

[0044] With such an arrangement, 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 crimping surface 22, and can undergo elastic deformation, thereby filling the gap between the second end face 112 and the crimping surface 22 to form a seal.

[0045] Optionally, the sealing member 3 is an O-ring or a circular gasket.

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

[0047] Exemplarily, the second end face 112 and the crimping surface 22 are both planes. When the muffler 2 is assembled with the cylinder head 1, the second end face 112 is parallel to the crimping surface 22. In the axial projection of the cylinder head 1, the projections of the second end face 112, the crimping surface 22 and the seal 3 are all circular rings with the axis of the cylinder head 1 as the center. The inner diameter of the second end face 112 is r1 and the outer diameter is R1. The inner diameter of the crimping 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 the following: r1=r2=r3; R1=R2=R3.

[0048] Optionally, a groove 114 is formed on the step surface, the sealing member 3 is disposed in the groove 114 , and the crimping surface 22 can press the sealing member 3 against the bottom of the groove 114 .

[0049] Exemplarily, a groove 114 is formed on the second end face 112, and 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, including a first wall, a second wall and a third wall, wherein the first wall is arranged parallel to the third wall, and in the radial direction of the cylinder head 1, the third wall is located on the outside of 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, and 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, there is an embodiment in which the seal 3 is completely disposed in the groove 114, that is, the thickness of the seal 3 is less than the depth of the groove 114. When the muffler 2 and the cylinder head 1 are assembled, the crimping 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 the bottom of the groove 114.

[0051] like Figure 6 As shown, there is another embodiment in which 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 and the cylinder head 1 are assembled, the seal 3 is clamped between the crimping surface 22 and the second end face 112. The crimping surface 22 squeezes the seal 3 so that the seal 3 abuts the bottom of the groove 114.

[0052] Optionally, the cylinder head 1 further 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 an accommodating cavity 21. In the axial direction of the cylinder head 1, the journal 12 abuts the bottom wall 2a of the muffler 2. In this way, the abutment achieves a seal between the journal 12 and the bottom of the muffler 2.

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

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

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

[0056] Optionally, a second peripheral side wall 115 is formed between the second end surface 112 and the first end surface 111 , and an outer surface of the second peripheral side wall 115 is gap-fitted with an 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 between the second circumferential side wall 115 and the first circumferential side wall 2 b is matched, making it easier to assemble the cylinder head 1 with the muffler 2 .

[0058] A refrigeration device is also provided, comprising the above-mentioned compressor.

[0059] Furthermore, the above are only preferred embodiments of the present invention and the technical principles employed. Those skilled in the art will appreciate that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments, and substitutions are possible for those skilled in the art without departing from the 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 scope of the present invention. The scope of the present invention is determined by the scope of the appended claims.

Claims

1. A compressor, characterized in that include: A cylinder head (1), wherein the cylinder head (1) forms a step structure (11) at its peripheral edge, and the step structure (11) forms a step surface along the horizontal direction; A muffler (2), the muffler (2) comprising a receiving chamber (21) and an opening communicating with the receiving chamber (21), the edge of the opening extending in the horizontal direction to form a crimping surface (22), the cylinder head (1) being inserted into the receiving chamber (21) and fixed to the muffler (2); The sealing member (3) is pressed against the step surface by the pressing surface (22), and the sealing member (3) is sandwiched between the two. The sealing member (3) realizes sealing around the axis of the cylinder head (1).

2. The compressor according to claim 1, characterized in that The step 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 in sequence in the axial direction of the cylinder head (1); the second end face (112) is the step face, which is formed on the outer peripheral side of the first end face (111).

3. The compressor according to claim 2, characterized in that In the axial direction of the cylinder head (1), the size of the cylinder head (1) is H, the depth of the accommodating 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 size H3 of the sealing member (3) satisfies H1+H2+H3<H.

4. The compressor according to claim 1, characterized in that The sealing member (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 sealing member (3), and the width of the crimping surface (22) are all equal.

6. The compressor according to claim 1, characterized in that The step surface is provided with a groove (114), the sealing member (3) is arranged in the groove (114), and the crimping surface (22) can press the sealing member (3) against the bottom of the groove (114).

7. The compressor according to claim 1, characterized in that The cylinder head (1) further comprises a neck portion (12), the muffler (2) comprises a bottom wall (2a) and a first circumferential side wall (2b), the first circumferential side wall (2b) being connected end to end to form a cylindrical structure, the first circumferential side wall (2b) being fixed to the bottom wall (2a) to form the accommodating cavity (21), and in the axial direction of the cylinder head (1), the neck portion (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 neck portion (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 peripheral side wall (115) is formed between the second end surface (112) and the first end surface (111), and the outer surface of the second peripheral side wall (115) is gap-fitted with the inner wall of the muffler (2).

10. Refrigeration equipment, characterized in that The compressor comprises the compressor according to any one of claims 1 to 9.

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