Silencer assembly structure and compressor

Abstract

This utility model belongs to the field of compressor technology, and discloses a muffler assembly structure and a compressor. The muffler assembly structure includes a cylinder head, a muffler, and a seal. The outer wall of the cylinder head has external threads, and the inner wall of the muffler has corresponding internal threads. The muffler cover is placed on the cylinder head, and the cylinder head and the muffler together form a muffler cavity. The muffler is threadedly connected to the cylinder head through the cooperation of the external and internal threads. The seal is placed between the cylinder head and the muffler to seal the gap between them. The compressor includes the above-mentioned muffler assembly structure and also includes a cylinder body, with the cylinder head placed on the cylinder body. The muffler assembly structure provided by this utility model is simple in structure, easy to assemble, reduces the extrusion deformation of the cylinder head end face, and effectively increases the volume of the muffler cavity, thereby improving the noise reduction effect of the compressor.

Description

Technical Field

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

[0002] In existing technologies, the assembly structure of the muffler and cylinder head in compressors generally adopts an interference fit, achieving a seal by fitting the cylinder head end face against the inner end of the muffler, and securing it with bolts. However, in the existing structure, the interference fit and end face sealing can easily lead to excessive compression of the cylinder head end face by the muffler, resulting in excessive deformation of the cylinder head end face. In addition, the end face fitting structure between the muffler and cylinder head also encroaches on the space of the muffler cavity, affecting the noise reduction effect of the compressor. Utility Model Content

[0003] The purpose of this utility model is to provide a muffler assembly structure that is simple in structure, easy to assemble, reduces the squeezing deformation of the cylinder head end face, and effectively increases the volume of the muffler cavity to improve the noise reduction effect.

[0004] To achieve this objective, the present invention adopts the following technical solution:

[0005] A muffler assembly structure, comprising:

[0006] Cylinder head, wherein the outer side wall of the cylinder head is provided with external threads;

[0007] The muffler has an internal thread on its inner circumferential wall. The muffler is mounted on the cylinder head, and the cylinder head and the muffler together form a muffler cavity. The muffler is threadedly connected to the cylinder head through the engagement of the external thread and the internal thread.

[0008] A sealing element is disposed between the cylinder head and the muffler, and the sealing element is used to seal the gap between the cylinder head and the muffler.

[0009] Preferably, the sealing element is configured as a sealing strip, the sealing strip is spirally arranged, and a threaded groove is formed between two adjacent external threads along the axial direction of the cylinder head, and the sealing strip is embedded in the threaded groove.

[0010] Preferably, the seal is configured as at least one sealing ring, which is stacked along the axial direction of the cylinder head.

[0011] Preferably, the cylinder head is provided with a corresponding groove, and the sealing ring is embedded in the groove.

[0012] Preferably, the cylinder head has a protruding shaft on one side facing the muffler, the protruding shaft abuts against the muffler, and the cylinder head, the protruding shaft and the muffler together form a muffler cavity. The protruding shaft has a first through hole, and the muffler has a corresponding second through hole. The first through hole is connected to the second through hole.

[0013] Preferably, the muffler has an annular abutment protrusion on one side facing the convex shaft, and the abutment protrusion abuts against the convex shaft.

[0014] Preferably, a transition reinforcement portion is provided between the convex shaft and the muffler for a smooth transition. The first end of the transition reinforcement portion is tangent to the outer peripheral wall of the convex shaft, and the second end of the transition reinforcement portion is tangent to the end face of the muffler.

[0015] Preferably, the edge of the convex shaft facing the side end face of the muffler is chamfered.

[0016] Preferably, the seal is made of rubber.

[0017] This utility model also provides a compressor, which includes the above-mentioned muffler assembly structure. The structure is simple and easy to assemble. It can reduce the extrusion deformation of the cylinder head end face and effectively increase the volume of the muffler cavity, thereby improving the noise reduction effect.

[0018] A compressor includes a muffler assembly structure as described in any of the preceding claims, and further includes a cylinder block, the cylinder head being disposed on the cylinder block.

[0019] Beneficial effects:

[0020] The muffler assembly structure provided by this utility model features an external thread on the outer wall of the cylinder head and a corresponding internal thread on the inner circumferential wall of the muffler. During installation, the muffler connects to the cylinder head via the engagement of the external and internal threads. Since the threaded connection itself provides a certain degree of sealing, the threaded connection between the cylinder head and the muffler provides a reliable and effective seal in the circumferential direction. The use of a sealing element further ensures the sealing performance of the muffler cavity based on the threaded engagement. This structure provides a reliable and secure overall connection, avoiding excessive pressure on the cylinder head end face and preventing excessive deformation. Furthermore, the threaded connection eliminates the space occupied by the traditional end-face fitting structure in the muffler cavity, effectively increasing the volume of the muffler cavity and improving noise reduction.

[0021] The compressor provided by this utility model includes the above-mentioned muffler assembly structure, which is convenient and reliable to assemble, effectively ensures the sealing of the muffler cavity, avoids excessive deformation of the cylinder head end face, effectively increases the volume of the muffler cavity, and improves the noise reduction effect. Attached Figure Description

[0022] Figure 1 This is an exploded view of the muffler assembly structure provided by this utility model.

[0023] Figure 2 This is an exploded view of the muffler assembly structure provided by this utility model from another perspective.

[0024] In the picture:

[0025] 1. Cylinder head; 11. External thread; 12. Threaded groove; 13. Cam shaft; 131. First through hole; 132. Chamfer; 14. Transition reinforcement;

[0026] 2. Muffler; 21. Second through hole; 22. Abutting protrusion;

[0027] 3. Sealing components. Detailed Implementation

[0028] 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.

[0029] 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.

[0030] 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.

[0031] 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.

[0032] This embodiment provides an assembly structure for a muffler 2. (Refer to...) Figures 1 to 2 As shown, the muffler 2 assembly structure includes a cylinder head 1, a muffler 2, and a seal 3. The outer wall of the cylinder head 1 has an external thread 11. The inner wall of the muffler 2 has a corresponding internal thread. The muffler 2 is mounted on the cylinder head 1, and the cylinder head 1 and muffler 2 together form a muffler cavity. The muffler 2 is threadedly connected to the cylinder head 1 through the engagement of the external thread 11 and the internal thread. The seal 3 is located between the cylinder head 1 and the muffler 2, and is used to seal the gap between them.

[0033] In this embodiment, the outer wall of the cylinder head 1 is provided with an external thread 11, and the inner circumferential wall of the muffler 2 is provided with a corresponding internal thread. When the muffler 2 is installed with the cylinder head 1, the muffler 2 is threadedly connected to the cylinder head 1 through the engagement of the external thread 11 and the internal thread. Since the threaded connection structure itself has a certain degree of sealing, the threaded connection between the cylinder head 1 and the muffler 2 can provide a reliable and effective sealing effect in the circumferential direction. Based on the threaded engagement, the use of the sealing element 3 can further ensure the sealing performance of the muffler cavity. The overall structure is reliably and firmly connected, and avoids excessive compression on the end face of the cylinder head 1, thus avoiding excessive deformation. In addition, the threaded connection method also eliminates the space occupied by the traditional end face fitting structure in the muffler cavity, effectively increasing the volume of the muffler cavity and improving the noise reduction effect.

[0034] In this embodiment, the sealing element 3 is configured as a sealing strip, which is spirally arranged. A threaded groove 12 is formed between two adjacent external threads 11 on the cylinder head 1 along its axial direction, and the sealing strip is embedded in the threaded groove 12. Specifically, by configuring the sealing element 3 as a spirally arranged sealing strip, and embedding the sealing strip in the threaded groove 12 formed between two adjacent external threads 11 on the cylinder head 1, the gap between the exposed threads and the internal threads during subsequent threaded connections can be further sealed, effectively ensuring the sealing effect. This also avoids the need to open a separate groove structure on the cylinder head 1 or the muffler 2 for installing the sealing strip, reducing costs and making it highly practical.

[0035] In some alternative embodiments, the seal 3 is configured as at least one sealing ring, which is stacked along the axial direction of the cylinder head 1. By configuring the seal 3 as a sealing ring and installing it between the cylinder head 1 and the muffler 2, it also serves to seal the gap between the cylinder head 1 and the muffler 2, ensuring a reliable and effective seal between them.

[0036] Alternatively, the cylinder head 1 may be provided with a corresponding groove into which the sealing ring is fitted. The groove is used to install the sealing ring, ensuring reliable and stable installation of the sealing ring.

[0037] In this embodiment, the material of the seal 3 is rubber. Rubber is a commonly used sealing material. Rubber seals have excellent sealing performance and can effectively prevent the leakage of substances such as liquids, gases, and dust. Rubber seals have high wear resistance and can withstand high-speed rotation and friction for a long time without easily wearing out. Rubber seals can work normally in high-temperature environments without deforming or melting, ensuring the normal operation of the equipment. Rubber seals can withstand the corrosion of chemicals such as acids, alkalis, and salts and can be used for a long time without damage.

[0038] In this embodiment, a convex shaft 13 protrudes from the side of the cylinder head 1 facing the muffler 2. The convex shaft 13 abuts against the muffler 2. The cylinder head 1, the convex shaft 13, and the muffler 2 together form a muffler cavity. The convex shaft 13 has a first through hole 131, and the muffler 2 has a corresponding second through hole 21. The first through hole 131 communicates with the second through hole 21. Specifically, the first through hole 131 and the second through hole 21 together form a flow channel for refrigerant flow. The convex shaft 13 is provided to form the flow channel, and its contact with the muffler 2 also supports the muffler 2, improving its overall strength. Furthermore, the contact between the convex shaft 13 and the muffler 2 enables rapid installation and positioning of the cylinder head 1 and the muffler 2, ensuring quick assembly.

[0039] In this embodiment, the muffler 2 has an annular abutment protrusion 22 protruding on the side facing the convex shaft 13, and the abutment protrusion 22 abuts against the convex shaft 13. Specifically, the abutment between the abutment protrusion 22 and the convex shaft 13 serves two purposes: firstly, it positions the convex shaft 13 and the muffler 2; secondly, it effectively seals the gap between the first through hole 131 and the second through hole 21, preventing leakage from the muffler cavity.

[0040] For example, a sealing structure, such as a sealing ring or a sealing gasket, may also be provided between the first through hole 131 and the second through hole 21.

[0041] In this embodiment, a transition reinforcement portion 14 is provided for a smooth transition between the cam shaft 13 and the muffler 2. The first end of the transition reinforcement portion 14 is tangent to the outer peripheral wall of the cam shaft 13, and the second end of the transition reinforcement portion 14 is tangent to the end face of the muffler 2. By providing the transition reinforcement portion 14, the connection strength between the cam shaft 13 and the muffler 2 can be further enhanced. Furthermore, the fact that the first end of the transition reinforcement portion 14 is tangent to the outer peripheral wall of the cam shaft 13 and the second end is tangent to the end face of the muffler 2 enables a smooth transition between the cam shaft 13 and the muffler 2, avoiding stress concentration.

[0042] In this embodiment, the edge of the side face of the convex shaft 13 facing the muffler 2 is provided with a chamfer 132. The chamfer 132 reduces the area of ​​the end of the convex shaft 13 to a certain extent, so that the end of the convex shaft 13 more closely abuts against the abutting protrusion 22, and also achieves effective positioning between the end of the convex shaft 13 and the abutting protrusion 22.

[0043] This embodiment also provides a compressor. The compressor includes the above-described muffler 2 assembly structure and a cylinder block, with a cylinder head 1 disposed on the cylinder block. By providing the above-described muffler 2 assembly structure on the compressor, it can achieve all the beneficial effects of the muffler 2 assembly structure. Assembly is convenient and reliable, effectively ensuring the sealing of the muffler cavity, avoiding excessive deformation of the cylinder head 1 end face, effectively increasing the volume of the muffler cavity, and improving the noise reduction effect.

[0044] The compressor in this embodiment can specifically be a hybrid rotary compressor.

[0045] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A muffler assembly structure, characterized in that, include: Cylinder head (1), the outer side wall of the cylinder head (1) is provided with external threads (11); The muffler (2) has an internal thread on its inner circumferential wall. The muffler (2) is placed on the cylinder head (1). The cylinder head (1) and the muffler (2) together form a muffler cavity. The muffler (2) is threadedly connected to the cylinder head (1) through the cooperation of the external thread (11) and the internal thread. A sealing element (3) is provided between the cylinder head (1) and the muffler (2), and the sealing element (3) is used to seal the gap between the cylinder head (1) and the muffler (2).

2. The muffler assembly structure according to claim 1, characterized in that, The sealing element (3) is configured as a sealing strip, which is spirally arranged. The cylinder head (1) has a thread groove (12) between two adjacent external threads (11) along its own axial direction, and the sealing strip is embedded in the thread groove (12).

3. The muffler assembly structure according to claim 1, characterized in that, The seal (3) is configured as at least one sealing ring, and the at least one sealing ring is stacked along the axial direction of the cylinder head (1).

4. The muffler assembly structure according to claim 3, characterized in that, The cylinder head (1) is provided with a corresponding groove, and the sealing ring is embedded in the groove.

5. The muffler assembly structure according to claim 1, characterized in that, The cylinder head (1) has a protruding shaft (13) on one side facing the muffler (2). The protruding shaft (13) abuts against the muffler (2). The cylinder head (1), the protruding shaft (13) and the muffler (2) together form a muffler cavity. The protruding shaft (13) has a first through hole (131), and the muffler (2) has a corresponding second through hole (21). The first through hole (131) is connected to the second through hole (21).

6. The muffler assembly structure according to claim 5, characterized in that, The muffler (2) has an annular abutment protrusion (22) protruding on one side facing the convex shaft (13), and the abutment protrusion (22) abuts against the convex shaft (13).

7. The muffler assembly structure according to claim 5, characterized in that, A transition reinforcement section (14) is provided between the convex shaft (13) and the muffler (2) for a smooth transition. The first end of the transition reinforcement section (14) is tangent to the outer peripheral wall of the convex shaft (13), and the second end of the transition reinforcement section (14) is tangent to the end face of the muffler (2).

8. The muffler assembly structure according to claim 5, characterized in that, The edge of the convex shaft (13) facing the muffler (2) is chamfered (132).

9. The muffler assembly structure according to claim 1, characterized in that, The material of the seal (3) is rubber.

10. A compressor, characterized in that, The muffler assembly structure includes any one of claims 1-9, and also includes a cylinder body, wherein the cylinder head (1) is disposed on the cylinder body.

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