KR20080021330A - Compressor is immanence for separation partition wall the inside of cylinder block - Google Patents

Abstract

A fixed swash plate type compressor is provided to prevent oil from being discharged together with high pressure refrigerant due to friction between a piston and a cylinder block, by mounting a partition between the cylinder block and a crank shaft. A fixed swash plate type compressor for compressing refrigerant, comprises a partition(20), a discharge-preventing plate, and a check valve. The partition is mounted between a crank chamber for swash plate movement with a piston(50) and a cylinder block(10), for separating therebetween. The partition comprises front and rear partitions(20a,20b), having a plurality of low-pressure suction passages(40) and high-pressure suction passages(60). The discharge-preventing plate having a communication hole in the center, is respectively provided on each low-pressure suction passage of the cylinder block for preventing oil discharge. The check valve is connected to the discharge-preventing plate with a predetermined elasticity to be opened and closed.

Description

Compressor is immanence for separation partition wall the inside of cylinder block}

1 is a cross-sectional view of a compressor having a separating partition wall according to the present invention;

Figure 2 is a perspective view of the discharge preventing plate is formed in the cylinder block according to the present invention,

3 is a perspective view of the check valve is fastened to the discharge preventing plate according to the present invention;

Figure 4 is an enlarged view of the check valve fastened to the discharge preventing plate according to the present invention.

<Explanation of symbols for the main parts of the drawings>

10 cylinder block 20 separation partition

30: discharge preventing plate 40: low pressure suction passage

50: piston 60: high pressure discharge passage

The present invention relates to a compressor in which a separating partition wall is embedded in a cylinder block. Specifically, in a fixed swash plate type compressor that compresses a refrigerant, a piston is embedded between a crank space in which a swash plate moves and a front and rear cylinder blocks. A separating partition wall separating the crank space and the cylinder block; A discharge preventing plate formed in the low pressure suction passage of the cylinder block to control discharge of oil; The present invention relates to a compressor having a separating partition wall embedded in a cylinder block, characterized in that it comprises a check valve which is fastened to the discharge preventing plate and is opened and closed.

In general, the air conditioner system is applied for the purpose of lowering the indoor temperature of the components of the car in summer, and they lower the temperature by heat-exchanging the ambient cold air by using the latent heat of evaporation of the refrigerant.

The air conditioning system is composed of a compressor, a condenser, a receiver dryer, an expansion valve, and an evaporator. Among them, a refrigerant compressor necessary for compressing the evaporated refrigerant is largely divided according to the driving method of the piston. It is used.

In the swash plate type compressor, a shaft having a pulley accommodating a magnet clutch as a means for receiving power of an engine in a transverse direction from an inner center of a cylindrical cylinder is installed at the tip.

Here, the swash plate is fixed to the middle of the shaft inclined at a predetermined angle with respect to the shaft center of the shaft, the outer circumferential edge of the swash plate to compress the refrigerant while reciprocating by the rotating swash plate.

In addition, the piston to which the swash plate is coupled to form a shoe pocket to be embedded in the hemispherical shoe to facilitate the rotation of the swash plate.

In addition, both sides of the piston is configured such that the piston ring is embedded between the cylinder inner wall and the piston to prevent leakage of oil or pressure.

However, there is a problem in that the swash plate, the rotating shaft, and the like constituting the operation part are normally opened in the suction space, so that the oil is mixed with the refrigerant during operation and discharged, and the oil passes through the evaporator core and the like, which greatly reduces the heat transfer efficiency. .

In addition, when the refrigerant to be sucked is too short of the lubricating oil, the swash plate is stuck, causing a failure.

The present invention has been made to solve the above problems, by embedding a separation partition between the crank space and the cylinder block so that the oil stays only in the crank space, the discharge prevention plate is formed in the cylinder block, check the discharge prevention plate The cylinder block is closed when the high pressure refrigerant is discharged, and the cylinder block is closed so that the oil stored in the crank space is not discharged back into the high pressure discharge passage and the low pressure suction passage when the low pressure refrigerant is sucked in and the high pressure refrigerant is discharged. It is an object of the present invention to provide a compressor having a separation partition therein.

The present invention has the following features to achieve the above object.

A fixed swash plate type compressor for compressing a refrigerant, comprising: a separating partition wall inherent between a crank space in which a piston is embedded to make a swash plate movement and a front and rear cylinder blocks to separate a crank space and a cylinder block; A discharge preventing plate formed in the low pressure suction passage of the cylinder block to prevent discharge of oil; The check valve is configured to include a check valve that is fastened with a predetermined elasticity to the discharge preventing plate.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a cross-sectional view of a compressor having a separating partition wall according to the present invention, FIG. 2 is a perspective view of a discharge preventing plate formed in a cylinder block according to the present invention, and FIG. 3 is a check valve fastened to the discharge preventing plate according to the present invention. 4 is an enlarged perspective view of a check valve fastened to a discharge preventing plate according to the present invention.

Referring to the present invention with reference to the drawings, in the compressor for compressing the refrigerant used in the air conditioner, the oil that serves as lubrication when the piston 50 for compressing the refrigerant flowing into the compressor reciprocating in the crank space Separation partition wall 20 to stay only in the crank space is embedded between the cylinder block 10 and the crank space, the low pressure suction passage when the high pressure refrigerant is discharged in the low pressure suction passage 40 of the cylinder block 10 The discharge preventing plate 30 for controlling the discharge to the 40 is formed, the communication hole 35 is formed in the discharge preventing plate 30, the check valve 30 is fastened thereon Lose.

The above is explained in more detail as follows.

Separation partition 20 is embedded between the crank space and the cylinder block inside the compressor so that the oil is present only in the crank space, to prevent the high-pressure refrigerant is discharged to the low pressure suction passage 40 of the cylinder block 10 A discharge preventing plate 30 is formed, and a communication hole 35 is formed in the discharge preventing plate 30 to discharge the high pressure refrigerant, which is fastened to the discharge preventing plate 30 by a fastening bolt 32. When the high pressure refrigerant is discharged to the check valve 30 having a predetermined elasticity, the discharge is controlled to the low pressure suction passage 40.

The discharge preventing plate 30 has a communication hole 35 is formed in the center portion, each formed in a plurality of low pressure suction passage 40, the check valve 30 is fastened to the discharge preventing plate 30 (bolt bolt ( 32, the check valve groove 33 is formed in the discharge preventing plate 30 is inserted into the check valve 30 in the shape of the check valve (30).

The check valve groove 33 prevents the check valve 30 from rotating when the check valve 30 is opened or closed.

In addition, the check valve 30 is formed in the same shape of one side and the other side of the circular or oval on the plane, one side opening and closing the communication hole 35 is larger than the other side, one side and the other side in the plane polygon It has the shape of, and consists of the same shape or each different shape.

In addition, the separation partition wall 20 is divided into a front separation partition wall 20a and a rear separation partition wall 20b, a plurality of low pressure suction passage 40 and a high pressure discharge passage 60 is formed, the center A plurality of piston holes are formed in the hole.

The above is described in more detail with reference to the drawings as follows.

When the piston 50 reciprocates in the inside of the compressor, the contact surface with the cylinder block 10 is worn. To prevent this, the oil 50 acts as a lubrication role. The high pressure refrigerant may be mixed with the refrigerant when the high pressure refrigerant is discharged, and the separation partition wall 20 is embedded between the cylinder block 10 and the crank space in order to prevent this.

This eliminates the phenomenon of oil being discharged to the outside.

In addition, a discharge preventing plate 30 is formed in the low pressure suction passage 40 of the cylinder block 10 to prevent discharge of the high-pressure refrigerant, and the communication hole 35 is formed at the central portion of the discharge preventing plate 30. This is formed so that the high pressure refrigerant is extracted.

In this case, the check valve 30 is coupled to the discharge preventing plate 30 by the fastening bolt 32 to open when the high pressure refrigerant is discharged, and close in response to the pressure drop.

This has the effect of adjusting the piston 50 is worn by friction with the cylinder block 10 so that the leaked refrigerant does not leak to the outside.

As described above, the present invention includes a separation partition between the crank space and the cylinder block so that the oil stays only in the crank space, a discharge preventing plate is formed in the cylinder block, and a check valve is fastened to the discharge preventing plate. When the low pressure refrigerant is sucked in, it is opened, and the oil stored in the crank space is closed so that the refrigerant oil is not discharged back into the high pressure discharge passage and the low pressure suction passage when the high pressure refrigerant is discharged and the high pressure refrigerant is discharged.

Claims (8)

In the fixed swash plate type compressor for compressing a refrigerant, A separation partition wall 20 in which a piston 50 is embedded to separate the crank space and the cylinder block 10 between the crank space in which the swash plate moves and the front and rear cylinder blocks; A discharge preventing plate 30 formed in the low pressure suction passage 40 of the cylinder block 10 to prevent discharge of oil; Compressor having a separation partition is embedded in the cylinder block, characterized in that it comprises a check valve 30 is fastened to the discharge preventing plate 30 has a predetermined elasticity is opened and closed. The method of claim 1, The discharge preventing plate 30 is a compressor having a separating partition wall in the cylinder block, characterized in that the communication hole 35 is formed in the center portion. The method of claim 1, The discharge preventing plate 30 is formed in the plurality of low pressure suction passage (40), characterized in that the separation partition wall is embedded in the cylinder block, characterized in that each. The method of claim 1, The check valve 30 is a compressor having a separation partition in the cylinder block, it characterized in that the fastening bolt 32 is fastened to the discharge preventing plate (30). The method of claim 1, The discharge preventing plate 30 has a check valve groove 33 into which the check valve 30 is inserted in the shape of the check valve 30 is formed. . The method of claim 1, The check valve 30 is formed in the same shape of one side and the other side of the circular or oval in the plane, one side for opening and closing the communication hole 35 is larger in size than the other side for separation in the cylinder block Compressor with bulkhead. The method of claim 1, The check valve 30 has a polygonal shape on one side and the other side on the plane, the compressor having a separation partition in the cylinder block, characterized in that formed in the same shape or different shapes. The method of claim 1, The separation partition wall 20 is divided into front and rear separation partition walls (20a, 20b), a plurality of low pressure suction passage 40 and the high pressure discharge passage (60) for separation in the cylinder block, characterized in that formed Compressor with bulkhead.

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