Cylinder cover gasket and automobile air conditioner compressor with same

Abstract

The utility model discloses a cylinder cover gasket and an automobile air conditioner compressor with the cylinder cover gasket. The cylinder cover gasket comprises a cylinder cover gasket body, a plurality of limiting plates are evenly distributed on the cylinder cover gasket body, and the distribution angle of each limiting plate is consistent with the distribution angle of each exhaust valve plate angle on the adjacent exhaust valve plate. And an included angle for controlling the opening and closing angle of an exhaust valve plate angle is formed between each limiting plate and the cylinder cover gasket body and is smaller than or equal to 5.5 degrees. The automobile air conditioner compressor comprises a front cover, a front cylinder cover gasket, a front exhaust valve plate, a front valve plate, a front air suction valve plate, a front cylinder gasket, a front cylinder body, a rear cylinder body, a rear cylinder gasket, a rear air suction valve plate, a rear valve plate, a rear exhaust valve plate, a rear cylinder cover gasket and a rear cover. The problems that the compressor does not refrigerate due to breakage of the exhaust valve plate of the small two-way compressor and the noise is too large due to the fact that the opening angle of the exhaust valve plate is too large are solved, the noise caused by the too large opening angle of the exhaust valve plate and the situation that the compressor does not refrigerate after breakage can be reduced, and the service life of the exhaust valve plate is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of automobile air conditioner compressor, especially a cylinder cover pad and automobile air conditioner compressor with the cylinder cover pad. BACKGROUND

[0002] At present, along with our country economic society's development and people living standard's improvement, the possession amount of car is bigger and bigger in the whole nation, and people's comfort requirement for car is higher and higher. Compressor is the core component of automobile air conditioning system, and determines the main component of air conditioning system refrigeration effect, therefore, compressor usually needs to have higher reliability.

[0003] The existing small bidirectional compressor will use a separate exhaust valve piece. In the reciprocating motion of the compressor, the exhaust valve piece will be forced to open and close, and the opening and closing angle determines the service life of the exhaust valve piece. Therefore, a cylinder cover pad that limits and appropriately controls the opening and closing angle of the exhaust valve piece is developed. UTILITY MODEL CONTENTS

[0004] The utility model discloses a cylinder cover pad and automobile air conditioner compressor with the cylinder cover pad, mainly solve the technical problem that the compressor does not refrigerate caused by the fracture of the exhaust valve piece of small bidirectional compressor, and the excessive noise caused by the opening and closing angle of the exhaust valve piece, which can reduce the noise caused by the excessive opening and closing angle of the exhaust valve piece and the situation that the compressor does not refrigerate after fracture, and prolong the service life of the exhaust valve piece.

[0005] The technical scheme of the utility model is:

[0006] A cylinder cover pad, characterized in that: it comprises a cylinder cover pad body, a plurality of limiting plates are uniformly distributed on the cylinder cover pad body, and the angle of distribution of each limiting plate is consistent with the angle of distribution of each exhaust valve piece angle on the adjacent exhaust valve piece; each limiting plate and the cylinder cover pad body have a included angle that controls the opening and closing angle of the exhaust valve piece angle, and the included angle is less than or equal to 5.5°.

[0007] The cylinder cover pad, characterized in that: the height of the limiting plate on the cylinder cover pad body is 2.2-2.35mm.

[0008] The cylinder cover pad, characterized in that: the connecting part of each limiting plate and the cylinder cover pad body has an excessive R angle of R75.

[0009] The utility model discloses an automobile air conditioner compressor, it is characterized by: it includes front cover, front cylinder cover pad, front exhaust valve piece, front valve plate, front suction valve piece, front cylinder pad, front cylinder body, rear cylinder body, rear cylinder pad, rear suction valve piece, rear valve plate, rear exhaust valve piece, rear cylinder cover pad, rear cover, and there is the front cylinder cover pad, the front exhaust valve piece, the front valve plate, the front suction valve piece, the front cylinder pad of being positioned together through the cylinder pin between the front cover and the front cylinder body, and there is the rear cylinder cover pad, the rear exhaust valve piece, the rear valve plate, the rear suction valve piece, the rear cylinder pad of being positioned together through the cylinder pin between the rear cover and the rear cylinder body.

[0010] The front cylinder cover pad and the rear cylinder cover pad adopt the structure of the cylinder cover pad as described above; the front exhaust valve piece and the rear exhaust valve piece adjacent to the front cylinder cover pad and the rear cylinder cover pad are provided with exhaust valve piece angles; and the front valve plate and the rear valve plate adjacent to the other side of the front exhaust valve piece and the rear exhaust valve piece are provided with air holes in a number and position corresponding to the exhaust valve piece angles and coverable by the exhaust valve piece angles.

[0011] The automobile air conditioner compressor is characterized in that the number of the exhaust valve piece angles of the front exhaust valve piece and the rear exhaust valve piece, the number of the limiting plates on the front cylinder cover pad and the rear cylinder cover pad, and the number of the air holes on the front valve plate and the rear valve plate are consistent with the number of the cylinder holes of the cylinder body composed of the front cylinder body and the rear cylinder body and keep corresponding positions.

[0012] The utility model has the following characteristics:

[0013] The cylinder cover pad of the utility model has a front cylinder cover pad and a rear cylinder cover pad, the limiting plates of the cylinder cover pad are uniformly distributed, the angles of the exhaust valve piece angles are uniformly distributed, and the limiting plates are used to limit the opening and closing angles of the exhaust valve piece (that is, the included angle between each limiting plate and the cylinder cover pad body controls the opening and closing angle of the exhaust valve piece angle). By controlling the thickness of the cylinder cover pad (that is, the height of the limiting plate on the cylinder cover pad body), the over R angle between the plane and the limiting plate, and the angle of the limiting plate (that is, the connecting part of each limiting plate and the cylinder cover pad body has an over R angle), the opening and closing angle of the exhaust valve piece angle is controlled, the noise in the process of frequent opening and closing of the exhaust valve piece in the operation of the compressor can be reduced, and the reliability thereof can be improved. The situation that the compressor does not refrigerate after the fracture caused by the excessive opening and closing angle of the exhaust valve piece can be reduced, and the service life of the exhaust valve piece is prolonged. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is the assembly schematic drawing of a preferred embodiment of the cylinder pad of the utility model automobile air conditioner compressor.

[0015] Figure 2 It is the assembly schematic drawing in a preferred embodiment of the valve plate, the cylinder pad and the exhaust valve piece of the utility model automobile air conditioner compressor.

[0016] Figure 3It is the assembling diagram in one preferable embodiment of valve plate and exhaust valve sheet of the utility model automobile air conditioner compressor.

[0017] Figure 4 It is the structure schematic diagram of cylinder gasket limiting plate of prior art automobile air conditioner compressor DETAILED DESCRIPTION

[0018] The specific embodiment of the utility model will be explained below in combination with the drawings.

[0019] Please refer to Figures 1-3 The utility model discloses a cylinder cover of automobile air conditioner compressor. As shown in the figure: it includes front cover 1, front cylinder cover gasket 3, front exhaust valve sheet 4, front valve plate 5, front suction valve sheet 6, front cylinder gasket 7, front cylinder body 8, rear cylinder body 9, rear cylinder gasket 11, rear suction valve sheet 26, rear valve plate 12, rear exhaust valve sheet 24, rear cylinder cover gasket 13, rear cover 14. There is front cylinder cover gasket 3, front exhaust valve sheet 4, front valve plate 5, front suction valve sheet 6, front cylinder gasket 7 that are positioned together through cylindrical pin 2 between front cover 1 and front cylinder body 8, and there is cylinder body sealing gasket 10 in the middle of front cylinder body 8 and rear cylinder body 9, and the three are fixed through cylindrical pin 2. There is rear cylinder gasket 11, rear suction valve sheet 26, rear valve plate 12, rear exhaust valve sheet 24, rear cylinder cover gasket 13 that are positioned together through cylindrical pin 2 between rear cover 14 and rear cylinder body 9. That is to say, cylindrical pin 2 is fixed to rear cover 14 through front cover 1 and penetrates all parts.

[0020] The utility model discloses a cylinder cover, namely the aforementioned front cylinder cover gasket 3 and rear cylinder cover gasket 13, and the structure of the two is the same, and the structure of rear cylinder cover gasket 13 will be introduced further below.

[0021] As Figures 2-4 Shown, the rear cylinder cover gasket 13 includes cylinder cover gasket body, and the cylinder cover gasket body is evenly distributed by a plurality of limiting plates 16, and the angle of distribution of each limiting plate 16 is consistent with the angle of distribution of each exhaust valve sheet angle 15 on the adjacent rear exhaust valve sheet 24. Each limiting plate 16 and the cylinder cover gasket body have the included angle of the opening angle of the exhaust valve sheet angle 15, and the included angle is less than or equal to 5.5 °.

[0022] Furthermore, the height of limiting plate 16 on the cylinder cover gasket body is 2.2-2.35mm, as Figure 4 .

[0023] In addition, the connecting place of each limiting plate and the cylinder cover gasket body has excessive R angle R75, as Figure 4 .

[0024] Both the front cylinder head gasket 3 and the rear cylinder head gasket 13 adopt the structure of the cylinder head gasket described above; the front exhaust valve plate 4 and the rear exhaust valve plate 25 adjacent to the front cylinder head gasket 3 and the rear cylinder head gasket 13 have exhaust valve plate angles 15; the front valve plate 5 and the rear valve plate 12 adjacent to the other side of the front exhaust valve plate and the rear exhaust valve plate have a number and position corresponding to the exhaust valve plate angles 15 and can be covered by the exhaust valve plate angles 15.

[0025] In this invention, the number of exhaust valve plate angles of the front exhaust valve plate and the rear exhaust valve plate, the number of upper limit plates of the front cylinder head gasket and the rear cylinder head gasket, and the number of air holes on the front valve plate and the rear valve plate are all consistent with the number of cylinder holes of the cylinder body composed of the front cylinder body and the rear cylinder body, and maintain a corresponding position.

[0026] In the use of this utility model, such as Figure 1 When the compressor is working in reciprocating motion, the exhaust valve plate angle 15 will open under pressure when the cylinder bore cavity is compressed. When it opens to a certain angle, it will be limited by the cylinder head gasket limit plate 16 by one stroke, such as: the opening angle is 5.5°.

[0027] Of course, the structure and parameters of the cylinder head gasket upper limit plate 16 in this utility model are also carefully considered.

[0028] The following table is as follows Figure 4 The compressor noise results under the same experimental conditions were obtained for three dimensions: a limiting plate height of 2.2-2.35 mm, a transition radius (R) between the plane and the limiting plate of 75°, and an angle of 5.5° between the limiting plate and the cylinder head gasket body to control the opening and closing angle of the exhaust valve plate.

[0029]

[0030] The above results show that, under the same experimental conditions, the cylinder head gasket of this invention produces less noise compared to the comparative technology, given the same cylinder head gasket size.

[0031] After reducing the height of the cylinder head gasket limit plate, the opening and closing angle of the exhaust valve plate becomes smaller, the fatigue strength is reduced, thereby enhancing the reliability of the exhaust valve, reducing the failure rate of the compressor due to exhaust valve plate breakage, and extending the service life of the exhaust valve plate.

[0032] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. All equivalent changes and modifications made within the scope of the claims of this utility model should be considered within the technical scope of this utility model.

Claims

1. A cylinder head gasket characterized by: It includes the cylinder cover pad body, the cylinder cover pad body is uniformly distributed by several limit boards, the angle of each limit board distribution is consistent with the angle of each exhaust valve piece angle distribution on the adjacent exhaust valve piece; Each limit board and the cylinder cover pad body have a included angle of the opening angle of the exhaust valve piece angle control, the included angle is less than or equal to 5.5 °.

2. The cylinder head gasket of claim 1, wherein: The height of the limit board on the cylinder cover pad body is 2.2-2.35mm.

3. The head gasket of claim 1, wherein: The connection between each limit board and the cylinder cover pad body has an excessive R angle of R75.

4. An automotive air conditioning compressor characterized by: It includes the front cover, the front cylinder cover pad, the front exhaust valve piece, the front valve plate, the front intake valve piece, the front cylinder pad, the front cylinder body, the rear cylinder body, the rear cylinder pad, the rear intake valve piece, the rear valve plate, the rear exhaust valve piece, the rear cylinder cover pad, the rear cover; The front cover and the front cylinder body have the front cylinder cover pad, the front exhaust valve piece, the front valve plate, the front intake valve piece, the front cylinder pad positioned together through the cylindrical pin; The front cylinder body and the rear cylinder body contain the cylinder body sealing pad, and the three are fixed through the cylindrical pin; The rear cover and the rear cylinder body have the rear cylinder cover pad, the rear exhaust valve piece, the rear valve plate, the rear intake valve piece, the rear cylinder pad positioned together through the cylindrical pin; The front cylinder cover pad and the rear cylinder cover pad adopt the structure of the cylinder cover pad as claimed in claim 1 or 2 or 3; The front exhaust valve piece and the rear exhaust valve piece adjacent to the front cylinder cover pad and the rear cylinder cover pad have exhaust valve piece angle; The front valve plate and the rear valve plate adjacent to the other side of the front exhaust valve piece and the rear exhaust valve piece have a number and position corresponding to the exhaust valve piece angle and can be covered by the exhaust valve piece angle.

5. The automotive air conditioning compressor of claim 4, wherein: The number of the exhaust valve piece angle of the front exhaust valve piece and the rear exhaust valve piece, the number of the limit board on the front cylinder cover pad and the rear cylinder cover pad, and the number of the air hole on the front valve plate and the rear valve plate are consistent with the number of the cylinder hole of the cylinder body composed of the front cylinder body and the rear cylinder body, and the positions are corresponding.

Images