A cylinder head assembly, compressor and refrigeration apparatus

Abstract

The application discloses a cylinder head assembly, a compressor and a refrigeration device, which comprises a cylinder cover part, including a cylinder cover and an exhaust silencer, which are integrally made of plastic, the cylinder cover is provided with a pressing surface, the cylinder cover is provided with an exhaust cavity at the pressing surface, the exhaust cavity is communicated with the inner cavity of the exhaust silencer to form an exhaust passage, and the exhaust cavity is provided with an exhaust valve piece lift limiter; the exhaust valve piece is provided with a valve tongue; wherein the exhaust cavity is a profiled cavity corresponding to the valve tongue, when exhausting, the valve tongue of the exhaust valve piece enters the exhaust cavity, and a safety gap is left between the valve tongue and the cavity wall of the exhaust cavity. The application can press the cylinder cover and the valve part on the cylinder seat with smaller pre-tightening force, and will not cause the plastic cylinder cover to be damaged and failed due to the excessive pre-tightening force, the stress on the cylinder cover is small, and the safety of the cylinder cover structure is high.

Description

Technical Field

[0001] This invention relates to the field of refrigeration compressors, and in particular to a cylinder head assembly, a compressor, and a refrigeration device. Background Technology

[0002] Household refrigerator compressors typically consist of a compressor body and a housing. The compressor body comprises a motor and a pump. Household refrigerator compressors are primarily reciprocating piston compressors. One characteristic of reciprocating compressors is their high compression ratio and intermittent discharge, resulting in very high refrigerant temperatures after compression in the cylinder. The high-temperature, high-pressure refrigerant gas flows periodically from the valve plate exhaust port, enters the cylinder head exhaust chamber, and then enters the exhaust muffler. Throughout this process, intense heat conduction occurs, transferring heat into the space inside the compressor housing. Through heat conduction and convection, harmful heat is absorbed by the refrigerant gas within the housing cavity, creating a strong superheating effect. This leads to an increase in the compressor's suction temperature, resulting in harmful suction superheat, severely impacting the compressor's suction efficiency and reducing its cooling capacity and coefficient of performance (COP). To mitigate the superheating effect on the exhaust side, plastic cylinder heads and plastic exhaust mufflers are typically used to reduce harmful heat transfer. Because plastic cylinder heads are weaker than traditional aluminum cylinder heads, they require elastic clamps for fastening, hence the plastic cylinder head components are usually round. Because plastic cylinder heads have low strength, the clamping force of the elastic clamp cannot be too large to prevent the structure from being damaged by excessive stress.

[0003] To save costs, existing compressors integrate the exhaust valve lift limiter into the cylinder head, making it a single piece. However, the exhaust valve lift limiter, which is integrally molded into the plastic cylinder head, is less strong than traditional metal limiters. Therefore, it is prone to plastic deformation under long-term impact from the exhaust valve, causing the exhaust valve lift to gradually increase, leading to excessive stress on the exhaust valve and eventual failure.

[0004] Furthermore, the exhaust process of a reciprocating compressor is periodic, resulting in strong exhaust pulsations that periodically propagate within the cylinder head, exhaust muffler, and internal exhaust pipe. Existing plastic exhaust mufflers, in an attempt to mitigate these pulsations, typically incorporate a throttling structure with a very small flow cross-sectional area. While reducing airflow pulsations, this design also generates significant flow resistance, leading to difficulty in compressor startup and a substantial reduction in compressor performance.

[0005] In summary, the problems existing in the relevant technologies urgently need to be solved. Summary of the Invention

[0006] The purpose of this invention is to at least solve one of the technical problems existing in the prior art, and to provide a cylinder head assembly, a compressor and a refrigeration device.

[0007] The technical solution adopted by this invention to solve its technical problem is: In a first aspect, a cylinder head assembly includes: A cylinder head component, including a cylinder head and an exhaust muffler, wherein the cylinder head and the exhaust muffler are made of one piece of plastic, the cylinder head has a pressing surface, the cylinder head has an exhaust chamber on the pressing surface, the exhaust chamber communicates with the inner cavity of the exhaust muffler to form an exhaust passage, and an exhaust valve lift limiter is provided in the exhaust chamber; The exhaust valve plate is equipped with a valve tongue; The exhaust chamber is a contoured cavity corresponding to the valve tongue. When exhausting, the valve tongue of the exhaust valve plate enters the exhaust chamber, and a safety gap is left between the valve tongue and the cavity wall of the exhaust chamber.

[0008] In conjunction with the first aspect, in some implementations of the first aspect, the safety gap is 0.1 to 3 mm.

[0009] In combination with the first aspect and the above-mentioned implementation methods, in some implementation methods of the first aspect, the exhaust valve lift limiter includes a lift limit post, the lift limit post is made of metal, the cylinder head is provided with a limit post mounting groove at the bottom of the exhaust chamber, and the lift limit post is fixedly assembled in the limit post mounting groove.

[0010] In combination with the first aspect and the above-described implementations, in some implementations of the first aspect, the exhaust valve lift limiter is integrally formed with the cylinder head, and the exhaust valve lift limiter has an arc-shaped inclined surface that can conform to the opened valve tongue.

[0011] In combination with the first aspect and the above-mentioned implementations, in some implementations of the first aspect, the exhaust muffler includes an upper exhaust muffler shell and a lower exhaust muffler shell. The upper exhaust muffler shell is integrally manufactured with the cylinder head. The lower exhaust muffler shell is connected to the bottom of the upper exhaust muffler shell and together define the inner cavity of the exhaust muffler. The upper end of the lower exhaust muffler shell is provided with a welding platform, and the inner edge of the welding platform is provided with a positioning flange. The lower exhaust muffler shell is assembled to the upper exhaust muffler shell through the positioning flange and welded to the upper exhaust muffler shell through the welding platform to form an integral whole.

[0012] In combination with the first aspect and the above-mentioned implementation methods, in some implementation methods of the first aspect, the exhaust muffler is provided with an internal exhaust pipe mounting hole, the internal exhaust pipe mounting hole and the inlet of the exhaust muffler are respectively located on both sides of the exhaust muffler, and at least one of the upper shell and the lower shell of the exhaust muffler is provided with a spoiler extending inward from the shell wall.

[0013] In combination with the first aspect and the above-described implementations, in some implementations of the first aspect, the extension direction of the spoiler is inclined to the shell wall of the exhaust muffler, and the inclination direction is opposite to the airflow direction inside the exhaust muffler.

[0014] In combination with the first aspect and the above-mentioned implementation methods, in some implementation methods of the first aspect, the cylinder head component further includes an intake muffler. The intake muffler, the cylinder head, and the exhaust muffler are integrally made of plastic. The cylinder head has an intake chamber on the pressing surface. The intake chamber communicates with the inner cavity of the intake muffler to form an intake channel.

[0015] In a second aspect, a compressor includes the cylinder head assembly described in any implementation of the first aspect.

[0016] Thirdly, a refrigeration device comprising a compressor as described in any implementation of the second aspect. One of the above technical solutions has at least one of the following advantages or beneficial effects: In the technical solution of the present invention, the shape of the cylinder head exhaust chamber is similar to the valve tongue of the exhaust valve plate, with a safety gap left at the edge to avoid abnormal collision of the exhaust valve plate. Therefore, the projected area of ​​the exhaust chamber on the pressing surface can be minimized, the pressure of the exhaust pressure applied to the projected area is also minimized, and the clamping force required by the elastic clamp on the cylinder head is also smaller. Therefore, the cylinder head and valve components can be pressed onto the cylinder seat with a smaller preload, without causing the plastic cylinder head to be damaged and fail due to excessive preload. The cylinder head is subjected to less force and the cylinder head structure has high safety. Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is an exploded view of an embodiment of the present invention; Figure 2 This is a schematic diagram of the valve tongue and exhaust chamber cooperation structure in one embodiment of the present invention; Figure 3 This is a schematic diagram of a cylinder head component structure according to an embodiment of the present invention; Figure 4 yes Figure 2 The diagram shows the decomposed state structure of the embodiment shown. Figure 5 This is a schematic diagram of a cylinder head component structure according to another embodiment of the present invention; Figure 6 This is a front view of a cylinder block structure according to an embodiment of the present invention; Figure 7 This is an isometric view of a cylinder block structure according to an embodiment of the present invention; Figure 8 This is a schematic diagram of the structure of a valve component according to an embodiment of the present invention; Figure 9 This is a schematic diagram of the structure of the air valve component and the guardrail in one embodiment of the present invention; Figure 10 This is a schematic diagram of a cylinder head gasket structure according to an embodiment of the present invention; Figure 11 This is a schematic diagram of an exhaust muffler structure according to an embodiment of the present invention; Figure 12 yes Figure 11 The diagram shows the internal airflow of the exhaust muffler in the embodiment shown. Figure 13 This is a schematic diagram of the internal airflow of an exhaust muffler according to another embodiment of the present invention. Detailed Implementation

[0018] This section will describe in detail specific embodiments of the present invention. Preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present invention, but they should not be construed as limiting the scope of protection of the present invention.

[0019] In this invention, when directions (up, down, left, right, front, and back) are described, it is only for the purpose of describing the technical solution of this invention, and does not indicate or imply that the technical features referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this invention.

[0020] In this invention, "several" means one or more, "multiple" means two or more, "greater than," "less than," "exceeding," etc., are understood to exclude the stated number; "above," "below," "within," etc., are understood to include the stated number. In the description of this invention, the terms "first" and "second" are used only to distinguish technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0021] In this invention, unless otherwise explicitly defined, the terms "setting," "installing," and "connecting" should be interpreted broadly. For example, they can refer to a direct connection or an indirect connection through an intermediate medium; a fixed connection, a detachable connection, or an integrally formed connection; a mechanical connection, an electrical connection, or a connection capable of mutual communication; or the internal connection of two components or the interaction between two components. Those skilled in the art can reasonably determine the specific meaning of the above terms in this invention based on the specific content of the technical solution.

[0022] See Figure 1 , Figure 6 , Figure 7 An embodiment of the present invention provides a cylinder head assembly, including a cylinder block 100, a valve component, a cylinder head component 200, and an elastic clip 300. The cylinder block 100 has a cylinder bore 101, and the cylinder bore 101 has a circular end face 102. The outer edge of the end face 102 has a guardrail 103 extending a certain length along the axial direction of the cylinder bore 101. The cylinder block 100 forms a cavity for assembling the valve component on the inner side of the guardrail 103. The guardrail 103 has a positioning groove 104, and the guardrail 103 forms a notch at the positioning groove 104. The positioning groove 104 has an asymmetrical structure, for example, it is inclined to one side in the circumferential direction. The cylinder block 100 has a plurality of elastic clip mounting platforms 105 on the outer side of the guardrail 103, which have screw holes.

[0023] See Figure 8 , Figure 9 The valve component includes an exhaust valve plate 401, a valve plate 402, and an intake valve plate 403. The exhaust valve plate 401, valve plate 402, and intake valve plate 403 have a circular outline and are assembled in the recessed cavity inside the guardrail 103. The outer edge of the exhaust valve plate 401, valve plate 402, and intake valve plate 403 is provided with a positioning boss 404 that is assembled in the positioning groove 104. The positioning boss 404 is an asymmetrical structure that cooperates with the positioning groove 104. For example, the positioning boss 404 is inclined to one side circumferentially from the outer edge of the exhaust valve plate 401, valve plate 402, and intake valve plate 403.

[0024] See Figure 1 The cylinder head assembly 200 includes a cylinder head 201, which has a clamping surface 202 for pressing the valve assembly against the end face 102 of the cylinder block 100. A resilient clip 300 is connected to a resilient clip mounting platform 105 by screws and presses the cylinder head assembly 200 from the back. The resilient clip mounting platforms 105 are asymmetrically distributed to prevent the resilient clips 300 from being installed backwards.

[0025] The exhaust valve plate 401, valve plate 402, and intake valve plate 403 have a strict assembly relationship to ensure that the valve tongue of the intake valve plate 403 can correctly cover the intake hole of the valve plate 402, and also to ensure that the valve tongue of the exhaust valve plate 401 can correctly cover the exhaust hole of the valve plate 402. Therefore, it is necessary to ensure that the assembly is correct and cannot be reversed. This invention provides a positioning groove 104 on the guardrail 103 of the cylinder block 100, which is an offset asymmetrical structure, for assembling the exhaust valve plate 401, valve plate 402, and intake valve plate 403, serving a circumferential positioning function and also preventing reverse installation. Specifically, this invention provides an offset asymmetrical positioning boss 404 on the outer edge of the exhaust valve plate 401, valve plate 402, and intake valve plate 403, which assembles with the positioning groove 104 on the guardrail 103 of the cylinder block 100, thus preventing reverse installation. This invention solves the problem of accurate positioning of cylinder head components by using only one set of offset asymmetric positioning grooves 104 and positioning bosses 404. The invention has a simple structure, ensures accurate positioning of cylinder head components such as the cylinder head 201, and provides strong error-proof capability.

[0026] In some embodiments, see Figures 1-4 The cylinder head component 200 also includes an exhaust muffler 203 and an intake muffler 204. The cylinder head 201, exhaust muffler 203, and intake muffler 204 are made of one piece of plastic. The cylinder head 201 has an exhaust chamber 205 on the pressing surface 202, which communicates with the inner cavity of the exhaust muffler 203 to form an exhaust channel. The cylinder head 201 also has an intake chamber 206 on the pressing surface 202, which communicates with the inner cavity of the intake muffler 204 to form an intake channel. In this embodiment, a plastic cylinder head 201, a plastic exhaust muffler 203, and a plastic intake muffler 204 are typically used to reduce harmful heat transfer.

[0027] Among them, see Figure 1 The elastic clip 300 has multiple mounting arms 301 connected to the elastic clip mounting platform 105. The exhaust muffler 203 is led out from between two mounting arms 301 of the elastic clip 300, and the intake muffler 204 is led out from between the other two mounting arms 301 of the elastic clip 300. The cylinder head component 200 cooperates with the mounting arms 301 of the elastic clip 300 to play a role in limiting and preventing misalignment.

[0028] In some embodiments, see Figure 1 , Figure 2 , Figure 3A cylinder head gasket 500 is provided between the cylinder head 201 and the valve assembly. The cylinder head gasket 500 is oriented to match the intake chamber 206 and exhaust chamber 205 of the cylinder head 201 and cannot be installed in reverse. Therefore, the cylinder head 201 is provided with a first positioning post 207 and a second positioning post 208. The first positioning post 207 and the second positioning post 208 are distributed in an arc shape along the outer edge of the pressing surface 202 of the cylinder head 201. The arc lengths of the first positioning post 207 and the second positioning post 208 are different. The edge of the cylinder head gasket 500 is provided with a positioning protrusion 501. The positioning protrusion 501 is provided with a first positioning hole 502 and a second positioning hole 503 with different arc lengths. The first positioning post 207 is fitted into the first positioning hole 502, and the second positioning post 208 is fitted into the second positioning hole 503. Because the two locating holes have different arc lengths, when assembling in reverse, the two locating holes cannot be inserted into the two locating pins at the same time. Therefore, it can play a good role in preventing mistakes and ensure the correct installation direction of the cylinder head gasket 500, thus solving the problem of the positioning accuracy of the cylinder head gasket 500.

[0029] Further, see Figure 3 The cylinder head component 200 forms multiple radial positioning surfaces 209 along the circumference of the pressing surface 202 through the first positioning post 207, the second positioning post 208, the exhaust muffler 203, and the intake muffler 204. The multiple radial positioning surfaces 209 are assembled on the outer circumferential surface of the guardrail 103 to improve assembly stability. In some embodiments, see Figure 3 , Figure 6 , Figure 7 The cylinder head 100 is provided with cylinder head stator feet 106, which extend away from the cylinder bore. Cylinder head stator feet 106 are used to mount the compressor stator. Positioning holes 107 are provided on cylinder head stator feet 106, and the exhaust muffler 203 is provided with positioning pins 210 that mate with the positioning holes 107. Because the positioning pins 210 are far from the center of the cylinder head 201, the angular deviation caused by the same linear dimensional deviation will be smaller. The positioning pins 210, mate with the positioning holes 107 on the cylinder head stator feet 106 of the cylinder head 100, provide circumferential positioning, preventing the cylinder head 201 from rotating on the cylinder head 100 guardrail 103 and ensuring the accurate assembly and positioning of the cylinder head 201 and the cylinder head components.

[0030] In some embodiments, see Figures 2-5The cylinder head 201 has an exhaust valve lift limiter in the exhaust chamber 205. The exhaust valve 401 has a valve tongue 405. The exhaust chamber 205 is a contoured cavity corresponding to the valve tongue 405. When exhausting, the valve tongue 405 of the exhaust valve 401 enters the exhaust chamber 205. A safety gap 406 is left between the valve tongue 405 and the cavity wall of the exhaust chamber 205. In this embodiment, the shape of the exhaust chamber 205 of the cylinder head 201 is similar to the valve tongue 405 of the exhaust valve plate 401, with a safety gap 406 left at the edge to avoid abnormal collision of the exhaust valve plate 401. Therefore, the projected area of ​​the exhaust chamber 205 on the pressing surface 202 can be minimized, and the pressure applied to the projected area by the exhaust pressure is also minimized. The clamping force required by the elastic clip 300 on the cylinder head 201 is also smaller. Therefore, the cylinder head 201 and the valve components can be pressed onto the cylinder seat 100 with a smaller preload, without causing the plastic cylinder head 201 to be damaged and fail due to excessive preload. The cylinder head 201 is subjected to less force, and the structure of the cylinder head 201 has high safety.

[0031] In some embodiments, the safety clearance 406 is 0.1 to 3 mm to ensure that the projected area of ​​the exhaust chamber 205 on the pressing surface 202 is minimized when the valve tongue 405 is normally open, thereby improving the structural safety of the cylinder head 201.

[0032] In some embodiments, see Figure 3 , Figure 4 The exhaust valve lift limiter includes a lift limit post 211, which is made of metal, such as aluminum. Compared to plastic, this improves reliability and prevents plastic lift limiters from plastically deforming or collapsing under long-term impact from the exhaust valve tongue 405, ensuring stable lift of the exhaust valve 401. The cylinder head 201 has a limit post mounting groove 212 at the bottom of the exhaust chamber 205. The lift limit post 211 is fixedly mounted in the limit post mounting groove 212, for example, through interference fit or threaded connection.

[0033] In other embodiments, see Figure 5 The exhaust valve lift limiter is integrally formed with the cylinder head 201. The exhaust valve lift limiter has an arc-shaped inclined surface 213 that can fit against the opened valve tongue 405. When the valve tongue 405 of the exhaust valve 401 is opened, it bends and deforms to fit snugly against the arc-shaped inclined surface 213. Because the exhaust valve lift limiter adopts a contour-following design, the overall structure has high rigidity. Therefore, the plastic material with the arc-shaped inclined surface 213 can also resist deformation well, ensuring the lift stability of the exhaust valve 401.

[0034] The present invention solves the reliability problem of plastic lift limiters by using the above-mentioned metal lift limiter and integrated arc-shaped lift limiter, thus ensuring the reliability of exhaust valve plate 401.

[0035] In some embodiments, see Figure 4 , Figure 11 The exhaust muffler 203 includes an upper exhaust muffler shell 203a and a lower exhaust muffler shell 203b. The upper exhaust muffler shell 203a is integrally manufactured with the cylinder head 201. The lower exhaust muffler shell 203b is connected to the bottom of the upper exhaust muffler shell 203a and together they define the inner cavity of the exhaust muffler 203. The upper end of the lower exhaust muffler shell 203b is provided with a welding platform 214. The inner edge of the welding platform 214 is provided with a positioning flange 215. The lower exhaust muffler shell 203b is assembled to the upper exhaust muffler shell 203a through the positioning flange 215 and welded to the upper exhaust muffler shell 203a through the welding platform 214 to form a whole.

[0036] Similarly, the intake muffler 204 includes an upper intake muffler housing 204a and a lower intake muffler housing 204b. The upper intake muffler housing 204a is integrally formed with the cylinder head 201, and the lower intake muffler housing 204b is connected to the bottom of the upper intake muffler housing 204a, and together they define the inner cavity of the intake muffler 204.

[0037] Further, see Figure 11 The exhaust muffler 203 is provided with an internal exhaust pipe mounting hole 216 for connecting an internal exhaust pipe. The internal exhaust pipe mounting hole 216 and the inlet of the exhaust muffler 203 are located on opposite sides of the exhaust muffler 203, allowing the exhaust airflow to flow from one side to the other. At least one of the upper shell 203a and the lower shell 203b of the exhaust muffler is provided with a spoiler 217 extending inward from the shell wall. See also Figure 12 When the exhaust airflow passes through the spoiler 217, it generates a strong vortex, which reduces the transmission of exhaust pulsation to the inner exhaust pipe, thereby reducing compressor vibration and noise.

[0038] Further, see Figure 13 The spoiler 217 is not perpendicular to the surrounding area. The extension direction of the spoiler 217 is inclined to the shell wall of the exhaust muffler 203, and the inclination direction is opposite to the airflow direction inside the exhaust muffler 203. Therefore, the vortex generated when the exhaust passes through can stay between the two spoilers 217 for a longer time, further reducing the transmission speed of exhaust pulsation and greatly improving the vibration noise of the compressor.

[0039] Embodiments of the present invention also provide a compressor, including the cylinder head assembly of any of the above embodiments.

[0040] Embodiments of the present invention also provide a refrigeration device, including the compressor in any of the above embodiments.

[0041] In the description of this specification, references to terms such as "example," "embodiment," or "some embodiments" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0042] Of course, the present invention is not limited to the above-described embodiments. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the present invention, and these equivalent modifications or substitutions are all included within the scope defined by the claims of this application.

Claims

1. A cylinder head assembly, characterized in that, include: A cylinder head component, including a cylinder head and an exhaust muffler, wherein the cylinder head and the exhaust muffler are made of one piece of plastic, the cylinder head has a pressing surface, the cylinder head has an exhaust chamber on the pressing surface, the exhaust chamber communicates with the inner cavity of the exhaust muffler to form an exhaust passage, and an exhaust valve lift limiter is provided in the exhaust chamber; The exhaust valve plate is equipped with a valve tongue; The exhaust chamber is a contoured cavity corresponding to the valve tongue. When exhausting, the valve tongue of the exhaust valve plate enters the exhaust chamber, and a safety gap is left between the valve tongue and the cavity wall of the exhaust chamber.

2. The cylinder head assembly according to claim 1, characterized in that, The safety clearance is 0.1 to 3 mm.

3. The cylinder head assembly according to claim 1, characterized in that, The exhaust valve lift limiter includes a lift limit post made of metal. The cylinder head has a limit post mounting groove at the bottom of the exhaust chamber, and the lift limit post is fixedly assembled in the limit post mounting groove.

4. The cylinder head assembly according to claim 1, characterized in that, The exhaust valve lift limiter is integrally formed with the cylinder head, and the exhaust valve lift limiter has an arc-shaped inclined surface that can fit against the opened valve tongue.

5. The cylinder head assembly according to claim 1, characterized in that, The exhaust muffler includes an upper exhaust muffler shell and a lower exhaust muffler shell. The upper exhaust muffler shell is integrally formed with the cylinder head. The lower exhaust muffler shell is connected to the bottom of the upper exhaust muffler shell and together they define the inner cavity of the exhaust muffler. The upper end of the lower exhaust muffler shell is provided with a welding platform, and the inner edge of the welding platform is provided with a positioning flange. The lower exhaust muffler shell is assembled to the upper exhaust muffler shell through the positioning flange and welded to the upper exhaust muffler shell through the welding platform to form a whole.

6. The cylinder head assembly according to claim 5, characterized in that, The exhaust muffler is provided with an internal exhaust pipe mounting hole, which is located on both sides of the exhaust muffler, and at least one of the upper shell and the lower shell of the exhaust muffler is provided with a spoiler extending inward from the shell wall.

7. The cylinder head assembly according to claim 6, characterized in that, The extension direction of the spoiler is inclined to the shell wall of the exhaust muffler, and the inclination direction is opposite to the airflow direction inside the exhaust muffler.

8. The cylinder head assembly according to claim 1, characterized in that, The cylinder head component also includes an intake muffler, which is integrally made of plastic with the cylinder head and the exhaust muffler. The cylinder head has an intake chamber on the pressing surface, and the intake chamber communicates with the inner cavity of the intake muffler to form an intake channel.

9. A compressor, characterized in that, Includes the cylinder head assembly according to any one of claims 1 to 8.

10. A refrigeration device, characterized in that, Includes the compressor described in claim 9.

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