Exhaust valve plate with plating layer and inclined plate type piston compressor

Abstract

The utility model discloses an exhaust valve plate with a plating layer and an inclined plate type piston compressor. The exhaust valve plate is suitable for the inclined plate type piston compressor and comprises an exhaust valve plate body, and the outer surface of the exhaust valve plate body is plated with a plating layer used for reducing the risk that the exhaust valve plate body is broken due to collision. The exhaust valve plate body made of the metal material is protected through the plating layer, so that the fracture risk of the exhaust valve plate body in the collision process of the exhaust valve plate and parts such as a valve plate is reduced, and the service life of the compressor is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of automotive air conditioning compressor technology, and in particular to an exhaust valve plate with a coating and a slant-plate piston compressor. Background Technology

[0002] The exhaust valve plate is a key component in a swashplate piston compressor. Its main function is to control the gas discharge process and ensure that the compressor operates efficiently and stably.

[0003] In existing swashplate piston compressors, there are a front cover, a rear cover, and a cylinder block, with a valve plate connected to the cylinder block. The valve plate is usually made of high-strength metal and has structures such as a main shaft hole, an intake port, an exhaust port, a valve plate mounting groove, and corresponding channels; the exhaust valve plate is connected to the side of the valve plate.

[0004] During the reciprocating motion of the compressor, as the high and low pressure airflow inside the compressor changes, the exhaust valve plate repeatedly opens and closes, opening the exhaust port and closing the exhaust port.

[0005] When a metal exhaust valve plate covers and closes the exhaust port, it will continuously collide with adjacent valve plates. Since most existing exhaust valve plates are also made of metal, this repeated metal-to-metal contact can easily lead to breakage. A broken or malfunctioning exhaust valve plate can cause the compressor to overheat and fail, thus reducing its lifespan. Utility Model Content

[0006] The purpose of this invention is to provide an exhaust valve plate with a coating and a slant-plate piston compressor, solving the technical problem that exhaust valve plates in the prior art are prone to breakage. This invention has a simple structure and lower cost.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] An exhaust valve plate with a coating, suitable for a swashplate piston compressor, includes an exhaust valve plate body, the outer surface of which is coated to reduce the risk of breakage due to impact.

[0009] Furthermore, the coating thickness is the same on both the front and rear sides of the exhaust valve plate body, the coating thickness is uniform, and the coating surface is flat and smooth.

[0010] Furthermore, the coating material is hydrogenated nitrile rubber.

[0011] Furthermore, the coating completely covers the surface of the exhaust valve plate body.

[0012] A swashplate piston compressor includes a coated exhaust valve plate connected to the side of a valve plate.

[0013] Compared with the prior art, this utility model provides an exhaust valve plate with a coating and a slant-plate piston compressor, which has the following beneficial effects:

[0014] The original repeated striking operation between the exhaust valve plate body and the valve plate has been upgraded to repeated striking operation between the plating and the valve plate. This reduces the risk of the exhaust valve plate body breaking due to repeated striking, and thus reduces the risk of compressor failure due to high temperature caused by exhaust valve plate body breakage.

[0015] Meanwhile, the coating is made of hydrogenated nitrile rubber, which upgrades the original metal-to-metal contact process to a rubber-coated metal-to-rubber contact process. This contact process reduces noise generated by the contact, thereby reducing the compressor's own noise. Using the exhaust valve plate in this utility model increases the compressor's lifespan and improves user satisfaction. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the inclined plate piston compressor in this utility model.

[0017] Figure 2 This is an enlarged view of point D in this utility model.

[0018] Figure 3 This is a schematic diagram of the connection structure between the front exhaust valve plate, the front valve plate, and the front cylinder head gasket from the A-direction view of this utility model.

[0019] Figure 4 This is a schematic diagram of the connection structure between the front exhaust valve plate, the front valve plate, and the front cylinder head gasket from the B-direction view of this utility model.

[0020] Figure 5 This is a side view of the exhaust valve plate in this utility model.

[0021] Figure 6 This is a cross-sectional view of the gas valve plate in this utility model along the CC direction.

[0022] In the picture:

[0023] 1-Cylinder block, 2-Front cover, 3-Rear cover, 4-Front exhaust valve plate, 5-Front valve plate, 6-Front cylinder head gasket, 7-Front intake valve plate, 8-Rear exhaust valve plate, 9-Rear valve plate, 10-Rear cylinder head gasket;

[0024] 12-Piston chamber, 13-Medium pressure chamber, 14-High pressure chamber, 15-Main shaft, 16-Sloping plate, 17-Exhaust valve plate body, 18-Coating, 19-Exhaust valve plate angle, 20-Limiting hole, 123-Bolt hole. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] like Figures 1-6 As shown, this utility model provides an exhaust valve plate with a coating and a slant-plate piston compressor. Among them, Figure 5 and Figure 6 This is a schematic diagram of an exhaust valve plate with a coating.

[0027] like Figure 6 As shown, in this embodiment, the exhaust valve plate includes an exhaust valve plate body 17 made of stainless steel. Both sides of the exhaust valve plate body 17 are coated with a hydrogenated nitrile rubber coating 18, and the coating 18 deposited on the outer surface of the exhaust valve plate body 17 does not peel off. Figure 6 As shown, the overall thickness of the exhaust valve plate is T, the thickness of the single-sided plating of the exhaust valve plate body 17 is H, and the thickness of the exhaust valve plate body 17 is X, where T = X + 2H. Because a non-metallic plating layer 18 is added to the surface of the exhaust valve plate body 17, when the exhaust valve plate contacts the valve plate, it is the hydrogenated nitrile rubber plating layer 18 that contacts the valve plate, preventing direct collision between the exhaust valve plate body 17 and the valve plate, thus reducing the risk of breakage due to impact. Simultaneously, because the plating layer 18 is made of hydrogenated nitrile rubber, it possesses excellent oil resistance, high-temperature resistance, and mechanical strength, which can provide a certain degree of buffering and noise reduction, and improve the high-temperature resistance of the exhaust valve plate.

[0028] In this embodiment, the coating thickness on both sides of the exhaust valve plate body 17 is the same, which is H. Figure 6 As shown, the coating thickness is uniform and the coating surface is flat and smooth, which can better seal the edge of the exhaust hole after it is attached to the valve plate.

[0029] Preferably, the hydrogenated nitrile rubber coating 18 can be used to completely cover the outer surface of the exhaust valve body 17.

[0030] We improved the original metal exhaust valve plate body by adding a plating layer to the outer surface of the exhaust valve plate body, forming a coating similar to... Figure 5 and Figure 6The structure features a coated exhaust valve plate, which protects the metal exhaust valve plate body through the coating, thereby reducing the risk of exhaust valve plate body breakage during collision with the valve plate and thus improving the service life of the compressor.

[0031] Figure 5 The illustration shows a preferred embodiment of an exhaust valve plate. We can also add a hydrogenated nitrile rubber coating to the outer surface of exhaust valve plates with other shapes, and then use the coated exhaust valve plate in a swashplate piston compressor. In this embodiment, structurally, the exhaust valve plate is a sheet-like body with a central hole, and four exhaust valve plate corners 19 and two limiting holes 20 connected to its outer ring. A positioning pin is provided on the valve plate, and the positioning pin is inserted into the limiting holes 20. When the exhaust valve plate is attached to the valve plate, the exhaust valve plate corners 19 cover the exhaust holes on the valve plate.

[0032] Figures 1-4 This is a schematic diagram of an embodiment of a swashplate piston compressor including the aforementioned exhaust valve plate. The swashplate piston compressor includes two coated exhaust valve plates: a front exhaust valve plate 4 and a rear exhaust valve plate 8. The two exhaust valve plates (front exhaust valve plate 4 and rear exhaust valve plate 8) have identical structures, each including a metal exhaust valve plate body and a coating covering the outer surface of the metal exhaust valve plate body, such as... Figure 5 and Figure 6 The diagram shown is a schematic of the exhaust valve plate used in the aforementioned swashplate piston compressor.

[0033] like Figure 1 As shown, in this swashplate piston compressor, the cylinder 1 is connected and fixed to the front cover 2 and the rear cover 3 at the front and rear, respectively. Specifically, the front cover 2, the cylinder 1, and the rear cover 3 together form a hollow internal cavity for installing the working components of the swashplate piston compressor.

[0034] Specifically, such as Figure 1 As shown, the swashplate piston compressor includes a piston, a main shaft 15, a front cover 2, a front cylinder head gasket 6, a front exhaust valve plate 4, a front valve plate 5, a front intake valve plate 7, a cylinder block 1, a rear intake valve plate, a rear valve plate 9, a rear exhaust valve plate 8, a rear cylinder head gasket 10, and a rear cover 3, etc.

[0035] The main shaft 15 has a mounting portion for the inclined plate 16, which is fixedly connected to the main shaft 15 and can rotate synchronously. When an external power source (such as a car engine) drives the main shaft 15 to rotate through a transmission device (such as a pulley, coupling, etc.), the main shaft 15 will drive the inclined plate 16 fixed to it to rotate together. The rotational motion of the inclined plate 16 is converted into the axial reciprocating motion of the piston in the cylinder through a mechanism such as a slider, thereby realizing the processes of compression, exhaust, expansion, and intake of refrigerant gas.

[0036] likeFigure 1 As shown, a valve plate is connected between the front cover 2 and the cylinder block 1, and between the rear cover 3 and the cylinder block 1, namely the front valve plate 5 and the rear valve plate 9. The front exhaust valve plate 4 and the front intake valve plate 7 are connected to the front and rear sides of the front valve plate 5 (e.g., Figure 2 As shown), the rear intake valve plate and the rear exhaust valve plate 8 are connected to the front and rear sides of the rear valve plate 9.

[0037] In this swashplate piston compressor, during compressor operation, the front exhaust valve plate 4 will collide with the front valve plate 5, and the rear exhaust valve plate 8 will collide with the rear valve plate 9. However, since both the front exhaust valve plate 4 and the rear exhaust valve plate 8 are exhaust valve plates coated with hydrogenated nitrile rubber, the risk of the front exhaust valve plate 4 and the rear exhaust valve plate 8 breaking due to repeated collisions is reduced, and the collision noise between metals can also be greatly reduced.

Claims

1. An exhaust valve plate with a coating, characterized in that: This exhaust valve plate is suitable for swashplate piston compressors and includes an exhaust valve plate body. The outer surface of the exhaust valve plate body is coated with a coating to reduce the risk of breakage due to impact.

2. The exhaust valve plate with a coating according to claim 1, characterized in that: The coating thickness is the same on both the front and rear sides of the exhaust valve plate body, the coating thickness is uniform, and the coating surface is flat and smooth.

3. The exhaust valve plate with a coating according to claim 2, characterized in that: The coating material is hydrogenated nitrile rubber.

4. The exhaust valve plate with a coating according to claim 3, characterized in that: The coating completely covers the surface of the exhaust valve plate body.

5. A slant-plate piston compressor, characterized in that: It includes an exhaust valve plate with a coating as described in any one of claims 1-4, the exhaust valve plate being connected to the side of a valve plate.

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