KR20070043119A - Compressor - Google Patents

Abstract

The present invention relates to a compressor, and more particularly, to a compressor that reduces noise by disposing a gasket between the valve plate and the suction lead valve so as to contact the gasket side when the suction lead valve strikes.

Accordingly, the present invention is a front and rear housing 20, 30: installed between the front and rear housing 20, 30, the cylinder block 10 having a plurality of cylinder bores 11: the cylinder bore ( A plurality of pistons 40 installed in the reciprocating motion in conjunction with the rotational motion of the swash plate 70 rotates together with the drive shaft 50: the suction chamber 31 of the front and rear housings 20, 30 And a suction lead valve 130 installed between the housing having the discharge chamber 32 and the cylinder block 10 and opening and closing the refrigerant suction hole 110b and the refrigerant discharge hole 110a on both sides of the valve plate 110. In the compressor comprising a valve unit 100 having a discharge lead valve (120) and the discharge lead valve 120, between the valve plate 110 and the suction lead valve 130 at the time of hitting the suction lead valve 130 valve plate ( 131 is characterized in that the noise reduction means 140 of the separate member is installed so as to reduce the noise.

Compressor, Front and Rear Housing, Cylinder Block, Valve Plate, Suction Lead Valve, Gasket

Description

Compressor

1 is a cross-sectional view showing a conventional compressor,

2 is an exploded perspective view showing a valve unit and a gasket in FIG.

3 is an exploded perspective view showing a valve unit and a gasket in the compressor according to the present invention;

Figure 4 is a partial cross-sectional view showing a state in which the valve unit and the gasket is installed between the cylinder block and the rear housing in the compressor according to the present invention.

<Description of Signs of Major Parts of Drawings>

1: compressor 10: cylinder block

11: cylinder bore 20: front housing

21: crankcase 30: rear housing

31: suction chamber 32: discharge chamber

40: piston 41: bridge

45: shoe

50: drive shaft 55: compression coil spring

60: rotor 61: hinge arm

62: slot 65: sleeve

66: hub pin 70: swash plate

71: hub 72: swashplate

73: connecting hinge arm 74: hinge pin

90: control valve

100: valve unit 110: valve plate

110a: refrigerant discharge hole 110b: refrigerant suction hole

111: setting pin 120: discharge lead valve

121,131: valve plate 122,132: setting hole

130: suction lead valve 140: noise reduction means

141, 150: gasket 142: through hole

The present invention relates to a compressor, and more particularly, to a compressor that reduces noise by disposing a gasket between the valve plate and the suction lead valve so as to contact the gasket side when the suction lead valve strikes.

Compressor constituting the air conditioner for automobile is a device that selectively receives the power from the power source by the intermittent action of the electronic clutch, sucks the refrigerant gas from the evaporator, compresses it by the linear reciprocating motion of the piston, and discharges it toward the condenser. . These compressors are divided into various types according to the compression method and structure, and among these compressors, a variable capacity compressor that can change the compression volume is also widely used.

Hereinafter, a conventional general variable displacement swash plate compressor will be described with reference to FIGS. 1 and 2.

The variable displacement swash plate compressor (1) has a cylinder block (10) having a plurality of cylinder bores (11) formed in an axial direction along a concentric circle therein, and mounted on the front side of the cylinder block (10) and cranks therein. The front housing 20 forming the seal 21, the rear housing 30 mounted on the rear side of the cylinder block 10 and having a suction chamber 31 and a discharge chamber 32 therein, and the cylinder A plurality of pistons 40 are reciprocally inserted into the respective cylinder bores 11 of the block 10 and the bridge 41 is formed at the rear end thereof, and one end thereof rotatably penetrates the front housing 20 and the rear end thereof. The part is inserted into the center of the cylinder block 10, the drive shaft 50 is rotatably installed, and the rotor coupled to the drive shaft 50 in the crank chamber 21 to rotate together with the drive shaft 50 ( 60 and the sleeve 65 is slidably coupled around the drive shaft 50. The long position is rotatably coupled to the insertion space of the piston 40 bridge 41 via the shoe 45, and is also rotatably connected to the hinge arm 61 of the rotor 60 so that the rotor 60 is provided. And a swash plate 70 which is installed to be tiltable with respect to the drive shaft 50 and rotates together with the cylinder block 10 and the rear housing 30 to rotate with the cylinder bore. And a valve unit 80 for sucking the refrigerant into the cylinder and discharging the compressed refrigerant from the cylinder bore 11 to the discharge chamber 32 during the compression stroke.

In addition, the inclination angle of the swash plate 70 with respect to the drive shaft 50 is adjusted according to the pressure change in the crank chamber 21 by the control valve 90 installed in the rear housing 30.

In addition, the compression coil spring 55 interposed on the driving shaft 50 between the rotor 60 and the swash plate 70 has a sleeve 65 in which the swash plate 70 is rotatably coupled to the rotor 60. By resiliently supporting the swash plate 70 serves to return to the initial position.

In addition, the valve unit 80 is provided with a valve plate 81 having a refrigerant suction hole 81 b and a refrigerant discharge hole 81 a and both sides thereof, respectively, and a suction lead valve for opening and closing the refrigerant suction hole 81 b ( 82) and a discharge lead valve 83 for opening and closing the refrigerant discharge hole 81a.

In addition, gaskets 85 and 86 are installed at both sides of the valve unit 80 to be sealed with the cylinder block 10 and the rear housing 30.

In addition, a slot 62 is formed in the hinge arm 61 of the rotor 60, and the hinge arm is formed in the hub 71 of the swash plate 70 facing the hinge arm 61 of the rotor 60. A connecting hinge arm 73 having a hinge pin 74 is formed to protrude to both sides of the 61 and to be fluidly coupled to the slot 62 of the hinge arm 61.

On the other hand, the swash plate (70) is coupled to the hub (71) rotatably coupled to the hub pin (66) to the sleeve (65) slidably coupled to the drive shaft (50), coupled to the outer peripheral surface of the hub (71) It consists of a swash plate (72).

As described above, in the variable displacement swash plate compressor 1, a plurality of pistons 40 arranged along a concentric circle of the cylinder block 10 are sequentially reciprocated before and after by the rotation of the swash plate 70. You exercise.

In this case, when the piston 40 is in the suction stroke, the suction lead valve 82 of the valve unit 80 is opened by the pressure drop in the cylinder bore 11 to open the cylinder bore 11 and the suction chamber 31. ) Is communicated with the refrigerant flows into the cylinder bore (11) from the suction chamber (31).

In the compression stroke of the piston 40, the refrigerant is compressed by an increase in the pressure inside the cylinder bore 11, and the discharge lead valve 83 of the valve unit 80 opens to open the cylinder bore 11. Since the discharge chamber 32 is in communication, the compressed refrigerant is discharged from the cylinder bore 11 to the discharge chamber 32.

In addition, since the inclination angle of the swash plate 70 is adjusted in response to the pressure difference between the pressure in the crank chamber 21 and the suction pressure in the cylinder bore 11, the discharge capacity of the compressor 1 is variable.

However, the suction lead valve 82 hits the valve plate 81 in the process of closing to seal the refrigerant suction hole 81b of the valve plate 81. Thus, the suction lead valve 82 of the metal material is formed. While hitting the valve plate 81 made of metal directly, there was a problem of generating noise.

An object of the present invention for solving the above-mentioned problems is to provide a compressor that reduces noise by placing a gasket between the valve plate and the suction lead valve so as to contact the gasket side when the suction lead valve is hit.

The present invention for achieving the above object is a front and rear housing: installed between the front and rear housings, the cylinder block having a plurality of cylinder bores: installed in the cylinder bore in the rotational motion of the swash plate to rotate with the drive shaft A plurality of pistons reciprocating in conjunction with each other: a suction lead valve installed between the housing having the suction chamber and the discharge chamber of the front and rear housings and the cylinder block and opening and closing the refrigerant suction hole and the refrigerant discharge hole on both sides of the valve plate. And a valve unit having a discharge lead valve, wherein a noise reducing means of a separate member is provided between the valve plate and the suction lead valve to reduce noise while contacting the valve plate when the suction lead valve is hit. It is characterized by.

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

Figure 3 is an exploded perspective view showing a valve unit and a gasket in the compressor according to the present invention, Figure 4 is a partial cross-sectional view showing a state in which the valve unit and the gasket is installed between the cylinder block and the rear housing in the compressor according to the present invention.

First, the variable displacement swash plate compressor (1) according to the present invention will be described with reference to the conventional drawings, the cylinder block 10 is provided with a plurality of cylinder bores (11) formed in the axial direction on the concentric circle, the cylinder A front housing 20 is formed at the front side of the block 10 to form a crank chamber 21 therein, and a suction chamber 31 and a discharge chamber 32 are formed at the rear side of the cylinder block 10. The rear housing 30 is mounted.

Each cylinder bore 11 of the cylinder block 10 is provided with a plurality of pistons (40) having a bridge 41 formed at the rear end to be reciprocally inserted.

Then, one end is rotatably penetrating the front housing 20, the rear end is inserted into the center of the cylinder block 10 is provided with a drive shaft 50 is rotatably supported.

In addition, a rotor 60 coupled to the drive shaft 50 in the crank chamber 21 and rotating together with the drive shaft 50 is installed.

In addition, the crank chamber 21 is rotatably installed in the sleeve 65 slidably coupled to the drive shaft 50 in the crank chamber 21, and an edge thereof is formed in the insertion space of the piston 40 bridge 41. A swash plate 70 rotatably coupled via a 45 and slidably connected to the hinge arm 61 of the rotor 60 to adjust the inclination angle with respect to the drive shaft 50 while rotating together with the rotor 60. Is fitted.

Here, the swash plate (70) is coupled to the hub (71) rotatably coupled to the hub pin (66) to the sleeve (65) slidably coupled to the drive shaft (50), coupled to the outer peripheral surface of the hub (71) It consists of a swash plate (72).

In addition, a slot 62 is formed in the hinge arm 61 of the rotor 60, and the hinge arm is formed in the hub 71 of the swash plate 70 facing the hinge arm 61 of the rotor 60. A connecting hinge arm 73 having a hinge pin 74 is formed to protrude to both sides of the 61 and to be fluidly coupled to the slot 62 of the hinge arm 61.

Accordingly, when the inclination angle of the swash plate 70 is displaced, the hinge pin 74 slides along the slot 62 to support the inclined motion of the swash plate 70.

On the other hand, the rear housing 30 is provided with a control valve 90 to operatively communicate the discharge chamber 32 and the crank chamber 21 by the refrigerant suction pressure and the crank chamber 21 in the cylinder bore (11). By varying the differential pressure with the gas pressure in the) acts to adjust the inclination angle of the swash plate (70).

In addition, a compression coil spring 55 for returning the swash plate 70 to an initial position is installed on the drive shaft 50 between the rotor 60 and the swash plate 70.

Then, it is installed between the cylinder block 10 and the rear housing 30 to suck the refrigerant into the cylinder bore 11 from the suction chamber 31 during the suction stroke of the piston 40, the cylinder bore 11 during the compression stroke A valve unit 100 for discharging the compressed refrigerant from the discharge chamber 32 to the discharge chamber 32 is provided.

The valve unit 100 includes a valve plate 110, a suction lead valve 130 and a discharge lead valve 120 installed on both side surfaces of the valve plate 110.

Here, the suction lead valve 130 is installed on the surface facing the cylinder bore 11 in the valve plate 110, the discharge lead valve 120 is installed on the surface facing the rear housing (30).

A plurality of refrigerant discharge holes 110a are formed in the valve plate 110 at a predetermined radial distance from a center to communicate with the discharge chamber 32 of the rear housing 30, and the suction of the rear housing 30 is performed. The same number of refrigerant suction holes 110b are formed at a radial distance greater than the position of the refrigerant discharge hole 110a so as to communicate with the seal 31.

Here, five coolant suction holes 110b and five coolant discharge holes 110a are formed in the drawing, but the coolant suction holes 110b and the coolant discharge holes 110a may be increased or decreased corresponding to the number of cylinder bores 11 of the cylinder block 10.

In addition, setting pins 111 protrude from both sides of the valve plate 110 to set a position when the suction lead valve 130 and the discharge lead valve 120 are coupled to each other.

In addition, the suction plate valve 130 and the discharge lead valve 120 has a predetermined elasticity, the valve plate 131 to open and close the refrigerant suction hole (110b) and the refrigerant discharge hole (110a) by bending and extending. 121 is formed.

The suction lead valve 130 and the discharge lead valve 120 are respectively provided with setting holes 132 and 122 so that the position can be set while being coupled to the setting pin 111 of the valve plate 110.

In addition, between the valve plate 110 and the suction lead valve 130, noise reduction means 140 of a separate member so as to reduce the noise while contacting the valve plate 131 when the suction lead valve 130 is hit. This is installed.

The noise reduction means 140 is formed by arranging a gasket 141 for sealing between the valve plate 110 and the cylinder block 10.

That is, conventionally, a gasket 85 (conventional) provided to seal between the valve plate 81 (conventional) and the cylinder block 10 is disposed between the suction lead valve 82 (conventional) and the cylinder block 10. While the cylinder block 10 from the gasket (85: conventional)-suction lead valve (82: conventional)-valve plate (81: conventional) was assembled in the structure, in the present invention, the gasket 141 is a valve plate 110 ) And the suction lead valve 130 to be assembled from the cylinder block 10 in order from the suction lead valve 130-gasket 141-valve plate (110).

Here, the gasket 141 is made of a metal plate, but both sides are coated with a rubber material for sealing. Of course, the coating material can be made of not only rubber but also various materials.

In addition, since the gasket 85 is conventionally disposed between the suction lead valve 82 and the cylinder block 10, the through-hole 85a of the cylinder bore 11 is conventional. : It should be formed in the conventional, but in the present invention, because the gasket 141 is disposed between the valve plate 110 and the suction lead valve 130, each refrigerant suction hole (110b) formed in the valve plate 110 ) And the through hole 142 of the same position and the same size as the refrigerant discharge hole 110a are formed in the gasket 141.

Therefore, the valve plate 131 comes into contact with the rubber gasket 141 coated with the rubber material during the opening and closing operation of the suction lead valve 130, thereby reducing the noise generated when the blow.

In addition, even if the gasket 141 is disposed between the valve plate 110 and the suction lead valve 130, the outer diameter of the gasket 141 is larger than that of the suction lead valve 130. Both sides of the edge are sealed while contacting the valve plate 110 and the cylinder block 10.

Meanwhile, a gasket 150 may be installed between the valve unit 100 and the rear housing 30 for sealing.

As described above, the compressor 1 according to the present invention, by placing a gasket 141 coated with a rubber material between the valve plate 110 and the suction lead valve 130, the suction lead valve 130 The valve plate 131 is in contact with the coating surface side of the gasket 141 coated with the rubber material during the opening and closing operation of the () is to reduce the noise.

As described above, in the present invention, the gasket 141 is disposed between the valve plate 110 and the suction lead valve 130 to reduce the noise when the suction lead valve 130 is hit by a variable capacitance type. Although only the case of application to the swash plate compressor 1 has been described, the present invention is not limited thereto, and it can be applied to various types of compressors such as a fixed capacity swash plate compressor and an electric compressor in the same manner, and the same effect can be obtained.

According to the present invention described above, noise is reduced by placing a gasket between the valve plate and the suction lead valve so as to contact the gasket side when the suction lead valve is hit.

Claims (2)

Front and rear housings 20 and 30: The cylinder block 10 installed between the front and rear housings 20 and 30 and having a plurality of cylinder bores 11: A plurality of pistons (40) installed in the cylinder bore 11 and reciprocating in conjunction with the rotational movement of the swash plate 70 to rotate with the drive shaft (50): Among the front and rear housings 20 and 30, a housing having a suction chamber 31 and a discharge chamber 32 and the cylinder block 10 are installed between the cylinder block 10 and the refrigerant suction holes 2 at both sides of the valve plate 110. In the compressor comprising a valve unit (100) having a suction lead valve 130 and a discharge lead valve 120 for opening and closing the 110b) and the refrigerant discharge hole (110a), Between the valve plate 110 and the suction lead valve 130, a noise reduction means 140 of a separate member is installed so as to reduce the noise while contacting the valve plate 131 when the suction lead valve 130 is hit. Compressor, characterized in that. The method of claim 1, The noise reduction means 140 is a compressor, characterized in that arranged by placing a gasket (141) for sealing between the valve plate 110 and the cylinder block (10).

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