A new cylinder base, cylinder head assembly and compressor

Abstract

The utility model belongs to cylinder technical field, concretely relates to a novel cylinder seat, cylinder head subassembly and compressor. The cylinder seat is equipped with first hole structure, the first hole structure includes cylinder hole, exhaust hole and positioning hole multiple holes, the end face of cylinder seat is first processing surface, the first processing surface includes the first reserved area that surrounds all holes of first hole structure, at least one portion of other parts except first reserved area on first processing surface is removed first thickness material and forms first removal area, makes first reserved area relative to first removal area bulge. The utility model provides a new cylinder seat structure to solve its poor heat dissipation and mechanical stress transmission problem simultaneously, thereby promotes the overall performance and reliability of compressor.

Description

Technical Field

[0001] This utility model belongs to the field of cylinder technology, specifically relating to a novel cylinder seat, cylinder head assembly, and compressor. Background Technology

[0002] Small reciprocating piston refrigeration compressors are the core components of household refrigerators, freezers and other refrigeration equipment. Their cylinder base, as a key basic component, bears important functions such as forming the compression chamber, installing valve components and connecting the exhaust passage.

[0003] Traditional cylinder block structures feature a single, solid, square block at the front end. This block has a flat end face, on which valve plate gaskets, intake valve plates, valve plates, cylinder head gaskets, and cylinder heads are sequentially mounted. These components are secured using cylinder head bolts at the four corners. A cylinder bore is machined in the center of the cylinder block to mate with the piston and form a compression volume. An exhaust port is also located on the end face, connecting to a built-in exhaust muffler chamber, and ultimately leading to an external condenser via an exhaust pipe.

[0004] However, the existing structure described above has the following two main drawbacks: Firstly, poor heat dissipation easily leads to high-temperature carbon buildup. Because the components of the cylinder head assembly are all square structures that fit the cylinder end face and are tightly stacked, the high-temperature, high-pressure gas in the chamber formed between the cylinder head and the valve plate can only dissipate heat in one direction to the outside of the cylinder head. The left side of the valve plate is tightly fitted to the solid cylinder end face, and there are heat-insulating materials such as gaskets sandwiched in between, making it difficult for heat to be effectively conducted to the cooler cylinder seat body through the valve plate. This difficulty in heat dissipation in this area causes the valve plate and valve plate to remain at high temperatures for extended periods, easily leading to carbonization and coking of the adhering lubricating oil. This not only affects the valve's sealing and opening / closing flexibility, causing compressor performance degradation, but also poses a risk of decreased reliability.

[0005] Secondly, the cylinder bore structure is susceptible to deformation due to installation stress. The front end of the cylinder block is a solid, rigid structure with a lack of stress release pathways. When tightening the cylinder head bolts, assembly stress is directly transmitted to the cylinder bore's peripheral wall. Because the clearance between the cylinder bore and piston is extremely small (only 5-8 micrometers), stress-induced deformation further reduces this clearance, disrupting oil film formation and increasing friction between the piston and cylinder bore. This not only leads to increased compressor input power and reduced energy efficiency but also exacerbates wear, affecting the overall machine's service life.

[0006] Therefore, a new type of cylinder block is urgently needed to solve the above problems. Utility Model Content

[0007] This utility model addresses the technical problems existing in the prior art by providing a novel cylinder seat. By providing a new cylinder seat structure, it simultaneously solves the problems of poor heat dissipation and mechanical stress transmission, thereby improving the overall performance and reliability of the compressor.

[0008] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A novel cylinder seat is provided with a first hole structure, the first hole structure including a cylinder hole, an exhaust hole and a positioning hole and a plurality of holes; the end face of the cylinder seat is a first machined surface; the first machined surface includes a first retention area surrounding all the holes of the first hole structure, and at least a portion of the other parts of the first machined surface excluding the first retention area is removed by removing a first thickness of material to form a first removal area, such that the first retention area is raised relative to the first removal area.

[0009] Based on the above technical solution, the present invention can be further improved as follows.

[0010] Furthermore, the upper and lower sides of the first processing surface, excluding the first reserved area, are completely removed.

[0011] Furthermore, the left and right sides of the first processing surface, excluding the first reserved area, have a material of the first thickness removed.

[0012] Furthermore, a portion of the upper surface of the first reserved area around the cylinder bore is a corrugated curved surface.

[0013] Furthermore, the corrugated surface is a periodic undulating structure continuously distributed along the circumference.

[0014] Furthermore, there are multiple positioning holes, which are circumferentially symmetrically distributed on the cylinder end face.

[0015] Furthermore, the first thickness is less than the thickness of the cylinder seat.

[0016] This utility model provides a cylinder head assembly, including the cylinder seat as described above.

[0017] This utility model provides a compressor, including the cylinder head assembly as described above.

[0018] The beneficial effects of this utility model are: 1. In this embodiment, in order to reduce the temperature of high-temperature and high-pressure gas, while ensuring that all parts of the sealing parts around the cylinder bore and exhaust port are in close contact and sealed, the end face of the cylinder seat is reasonably removed except for the sealing part, thereby opening the left side of the valve plate. In this way, the high-temperature and high-pressure gas in the cylinder head cavity transfers heat through the left side of the valve plate, and the heat is carried away by the flow of refrigeration oil, thereby reducing the temperature of the valve plate and intake valve plate, improving carbon deposits on the valve plate and intake valve plate, and improving the performance of the compressor.

[0019] 2. In this embodiment, the presence of a portion removed from the cylinder end face at a certain distance from the cylinder bore prevents stress from being transmitted to the cylinder bore when the screw is tightened, thus preventing cylinder bore deformation. This reduces friction and wear between the piston and the cylinder bore, lowers input power, and increases COP value. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the cylinder seat structure described in this embodiment; Figure 2 This is a schematic diagram of the cylinder head assembly described in this embodiment; Figure 3 This is a schematic diagram of the valve plate gasket described in this embodiment; Figure 4 This is a schematic diagram of the intake valve plate described in this embodiment; Figure 5 This is a schematic diagram of the valve plate described in this embodiment; Figure 6 This is a schematic diagram of the cylinder head gasket described in this embodiment; Figure 7 This is a schematic diagram of the cylinder head structure described in this embodiment; Figure 8 This is a schematic diagram of the structure of the cylinder seat as described in the prior art; Figure 9 This is a schematic diagram of the structure of the valve plate gasket described in the prior art; Figure 10 This is a schematic diagram of the structure of the intake valve plate described in the prior art; Figure 11 This is a schematic diagram of the structure of a cylinder head assembly as described in the prior art.

[0021] The attached diagram lists the components represented by each number as follows: 1. Cylinder seat; 11. Cylinder bore; 12. Exhaust port; 13. Positioning hole; 14. First retention area; 15. First removal area; 16. Corrugated surface. 2. Valve plate gasket; 21. Second hole structure. 3. Intake valve plate; 31. Third hole structure; 4. Valve plate, 5. Cylinder head gasket, 6. Cylinder head. Detailed Implementation

[0022] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0023] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0024] In the description of this application, the term "for example" is used to mean "used as an example, illustration, or description." Any embodiment described as "for example" in this application is not necessarily to be construed as being more preferred or advantageous than other embodiments. The following description is provided to enable any person skilled in the art to implement and use the present invention. Details are set forth in the following description for purposes of explanation. It should be understood that those skilled in the art will recognize that the present invention can be implemented without using these specific details. In other instances, well-known structures and processes will not be described in detail to avoid obscuring the description of the present invention with unnecessary detail. Therefore, the present invention is not intended to be limited to the embodiments shown, but is consistent with the broadest scope of the principles and features disclosed in this application.

[0025] Example A new type of cylinder block, such as Figure 1 As shown, the cylinder seat 1 is provided with a first hole structure, which includes a cylinder hole 11, an exhaust hole 12, and a positioning hole 13, among other holes; the end face of the cylinder seat 1 is a first machining surface; the first machining surface includes a first retention area 14 surrounding all the holes of the first hole structure, and at least a portion of the other parts of the first machining surface, excluding the first retention area 14, is stripped of a first thickness of material to form a first removal area 15, such that the first retention area 14 protrudes relative to the first removal area 15.

[0026] Specifically, the upper and lower sides of the first processing surface, excluding the first reserved area 14, are completely removed.

[0027] Specifically, the left and right sides of the first processing surface, excluding the first retained area 14, have a material of the first thickness removed.

[0028] Wherein, the first thickness is less than the thickness of the cylinder seat 1.

[0029] The number of positioning holes 13 is multiple, and the multiple positioning holes 13 are circumferentially symmetrically distributed on the cylinder end face.

[0030] In this embodiment, the cylinder seat 1 is machined to retain an annular platform around the cylinder bore 11, exhaust port 12, and positioning hole 13. The annular platforms of all the holes are connected to each other to form a first retention area 14. The upper and lower parts of this end face, except for the first retention area 14, are completely milled away, and the left and right sides are milled away to a certain depth to form a first removal area 15. This depth is less than the thickness of the cylinder seat 1. It should be noted that the annular platform around the cylinder bore 11 and exhaust port 12 is a necessary part for their sealing, and the annular platform around the positioning hole 13 is a necessary part for its positioning.

[0031] It should be noted that, in order to reduce the temperature of the high-temperature and high-pressure gas, in this embodiment, while ensuring that all parts of the sealing parts around the cylinder bore 11 and the exhaust port 12 are in close contact and sealed, the end face of the cylinder seat 1 is reasonably removed except for the sealing part, thereby opening the left side of the valve plate 4. In this way, the high-temperature and high-pressure gas in the inner cavity of the cylinder head 6 transfers heat through the left side of the valve plate 4, and the heat is carried away by the flow of refrigeration oil, thereby reducing the temperature of the valve plate gasket 2, improving carbon deposits on the valve plate gasket 2, and improving the performance of the compressor.

[0032] On the other hand, due to the presence of the removed portion at a certain distance from the cylinder bore 11 on the cylinder end face, stress will not be transmitted to the cylinder bore 11 when the screw is tightened, and the cylinder bore 11 will not be deformed, thereby reducing friction and wear between the piston and the cylinder bore 11, reducing input power, and increasing COP value.

[0033] In a preferred embodiment, a portion of the upper surface of the first reserved area 14 surrounding the cylinder bore 11 is a corrugated surface 16.

[0034] The corrugated surface 16 is a periodic undulating structure continuously distributed along the circumference.

[0035] In this embodiment, the upper part of the cylinder bore 11 is designed as a corrugated curved surface 16, which increases the heat dissipation area and thus better reduces the temperature of the cylinder head.

[0036] This embodiment provides a cylinder head assembly, including the cylinder seat 1 described above.

[0037] A cylinder head assembly, such as Figure 2-7 As shown, it includes a cylinder seat 1, a valve plate gasket 2, an intake valve plate 3, a valve plate 4, a cylinder head gasket 5, and a cylinder head 6 that are tightly fitted together in sequence along the axial direction. The cylinder seat 1 is provided with a first hole structure, which includes a cylinder hole 11, an exhaust hole 12 and a positioning hole 13; the valve plate gasket 2 and the intake valve plate 3 are each provided with a second hole structure 21 and a third hole structure 31 that correspond one-to-one with the base hole, exhaust hole 12 and positioning hole 13 of the cylinder seat 1.

[0038] like Figure 3 As shown, the end face of the valve plate gasket 2 facing the cylinder seat 1 is a second machined surface; the second machined surface includes a second retention area surrounding each hole of its second hole structure 21, and the other parts of the second machined surface except for the second retention area are completely removed to form a second removal area; like Figure 4 As shown, the end face of the intake valve plate 3 facing the cylinder seat 1 is the third machining surface; the third machining surface includes a third retention area surrounding each hole of its third hole structure 31, and the other parts of the third machining surface except for the third retention area are completely removed to form a third removal area; The second reserved area and the third reserved area are both continuous, integral area structures.

[0039] In this embodiment, the second retention area on the valve plate gasket 2 is a continuous integral structure, which is formed by connecting all the annular frames surrounding each hole to each other; all material on the second processing surface except for the second retention area is completely removed; the third retention area on the suction valve plate 3 is a continuous integral structure, which is formed by connecting all the annular frames surrounding each hole to each other; all material on the third processing surface except for the third retention area is completely removed.

[0040] It should be noted that, among all the holes of the valve plate gasket 2 and the intake valve plate 3, the annular border around the hole corresponding to the cylinder hole 11 and the exhaust hole 12 is a necessary part for its sealing, and the annular border around the hole corresponding to the positioning hole 13 is a necessary part for its positioning.

[0041] This embodiment provides a compressor, including the cylinder head assembly described above.

[0042] While embodiments or examples of this disclosure have been described with reference to the accompanying drawings, it should be understood that the methods, systems, and devices described above are merely exemplary embodiments or examples, and the scope of this utility model is not limited by these embodiments or examples, but only by the granted claims and their equivalents. Various elements in the embodiments or examples may be omitted or replaced by their equivalents. Furthermore, the steps may be performed in a different order than that described in this disclosure. Further, various elements in the embodiments or examples may be combined in various ways. Importantly, as technology evolves, many elements described herein can be replaced by equivalents that appear after this disclosure.

Claims

1. A new cylinder block characterized in that, The cylinder seat has a first hole structure, which includes a cylinder hole, an exhaust hole, and a positioning hole. The end face of the cylinder seat is a first machining surface. The first machining surface includes a first retention area surrounding all the holes of the first hole structure. At least a portion of the other parts of the first machining surface, excluding the first retention area, is stripped of a first thickness of material to form a first removal area, such that the first retention area protrudes relative to the first removal area.

2. The novel cylinder liner according to claim 1, characterized by The upper and lower sides of the first processing surface, excluding the first reserved area, are completely removed.

3. The novel cylinder liner as claimed in claim 1, wherein The first thickness of material is removed from the left and right sides of the first processing surface, excluding the first reserved area.

4. The novel cylinder seat according to claim 1, characterized in that, A portion of the upper surface of the first reserved area around the cylinder bore is a corrugated curved surface.

5. The novel cylinder seat according to claim 4, characterized in that, The corrugated surface is a periodic undulating structure continuously distributed along the circumference.

6. The novel cylinder seat according to claim 1, characterized in that, The number of positioning holes is multiple, and the multiple positioning holes are circumferentially symmetrically distributed on the cylinder end face.

7. The novel cylinder seat according to claim 1, characterized in that, The first thickness is less than the thickness of the cylinder seat.

8. A cylinder head assembly, characterized in that, Includes the cylinder block as described in any one of claims 1-7.

9. A compressor, characterized in that, Includes the cylinder head assembly as described in claim 8.

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