KR101313068B1 - valve unit for compressor - Google Patents

Abstract

The present invention relates to a valve unit for a compressor, the valve plate 200, 300, 400 is installed between the housing 10, 10 'and the cylinder block 700 of the compressor 1, the valve plate Refrigerant suction holes 210, 310, 410 and refrigerant discharge holes 220, 320, 420 in which the refrigerant flows (200, 300, 400) cylinder bore 710 of the cylinder block 700 In the valve unit 100 for a compressor formed to be positioned on the valve plate, the valve plate 200 between the refrigerant suction holes 210, 310, 410 and the refrigerant discharge holes 220, 320, 420 ( The through holes 230, 330, 430 are drilled in the 300 and 400, and one end of the through holes 230, 330, 430 is fixed to the through holes 230, 330, 430, and both ends thereof are the valve plate 200. Valve leads 500 and 600 provided to open and close the refrigerant suction holes 210, 310, 410 and the refrigerant discharge holes 220, 320, 420 on both sides of the 300, 400, respectively. Characterized in that the configuration, including the conventional suction and discharge lead valve 62, 63, etc. Becomes unnecessary, the configuration of the valve unit 100 is simplified, and simplifies the production process and assembly process, it is possible to reduce costs.

Compressor, Cylinder Block, Cylinder Bore, Valve Unit, Valve Plate, Valve Lead

Description

Valve unit for compressor

The present invention relates to a valve unit for a compressor, and more particularly, by installing a valve lead for opening and closing a refrigerant suction hole and a refrigerant discharge hole in a valve plate, simplifying the configuration of the valve unit, simplifying the production process, and reducing the cost. A valve unit for a compressor can be provided.

In general, a compressor for an air conditioner of a vehicle is a device for driving a power of an engine to suck a refrigerant discharged from an evaporator and convert the discharged refrigerant into a refrigerant having a high temperature and high pressure which is easily liquified.

Such a general swash plate type compressor for a vehicle air conditioner will be described with reference to Fig.

As shown in FIG. 1, the swash plate compressor 1 is coupled to the front housing 10 in which the front cylinder block 30 is built, and the rear cylinder block 30 'is coupled to the front housing 10. It consists of a rear housing 10 '.

Inside the front and rear housings 10 and 10 ', each of the suction chambers 11 and the discharge chambers corresponding to the refrigerant suction holes 61a and the refrigerant discharge holes 61b of the valve plate 61, which will be described later, 12) is formed.

In addition, the front and rear cylinder blocks 30 and 30 ′ have a plurality of cylinder bores 31 formed therein, and the cylinder bores 31 corresponding to each other of the front and rear cylinder blocks 30 and 30 ′. In addition, the pistons 50 are inserted to reciprocate linearly, and the pistons 50 are coupled to each other through the shoe 41 on the outer circumference of the swash plate 40 that is inclinedly coupled to the driving shaft 20.

Accordingly, the pistons 50 linearly reciprocate inside the cylinder bores 31 of the front and rear cylinder blocks 30 and 30 ', interlocking with the swash plate 40 rotating together with the driving shaft 20.

A valve unit 60 is formed between the front and rear housing 10 ', 10' and the front and rear cylinder blocks 30, 30 '.

As shown in FIGS. 2 and 3, the valve unit 60 includes a refrigerant suction hole 61a, a cylinder bore 31, and a discharge chamber 12 that communicate the suction chamber 11 and the cylinder bore 31. ) Valve plates 61 each having a refrigerant discharge hole 61b communicating therewith and valves 61 provided at both sides of the valve plate 61 to open and close the refrigerant suction hole 61a and the refrigerant discharge hole 61b, respectively. It consists of the suction lead valve 62 and the discharge lead valve 63 which have leads 62a and 63a.

The valve unit 60 is configured between the front and rear housings 10 and 10 'and the front and rear cylinder blocks 30 and 30', respectively, and the valve unit 60 and the front and rear sides. A suction side gasket 64 is installed between the cylinder blocks 30 and 30 ', and a discharge side gasket 65 is installed between the valve unit 60 and the front and rear housings 10 and 10'. do.

The front and rear cylinder blocks 30 and 30 'are arranged such that the refrigerant supplied to the swash plate chamber 34 formed between the front and rear cylinder blocks 30 and 30' A plurality of suction passages 32 are formed in the front and rear cylinder blocks 30 and 30 'and a part of the discharge chambers 12 of the front and rear housings 10 and 10' Are interconnected by a connecting passage (33) formed therein.

Therefore, the suction and compression of the refrigerant can be performed simultaneously in the cylinder bores 31 of the front and rear cylinder blocks 30 and 30 'according to the reciprocating movement of the piston 50.

On the other hand, the upper portion of the outer circumferential surface of the rear housing 10 'is supplied with the refrigerant transferred from the evaporator during the suction stroke of the piston 50 into the compressor 1 through the refrigerant suction opening 71, and the compression stroke of the piston 50 The muffler 70 for discharging the refrigerant compressed in the compressor 1 to the condenser side through the refrigerant discharge port 72 is installed.

The refrigerant circulation process of the compressor 1 thus constructed will be described.

The refrigerant supplied from the evaporator is supplied to the swash plate chamber 34 between the front and rear cylinder blocks 30 and 30 ′ through the refrigerant suction port 71 of the muffler 70, and is supplied to the swash plate chamber 34. The refrigerant flows into the suction chamber 11 of the front and rear housings 10 and 10 'along the suction passage 32 formed in the front and rear cylinder blocks 30 and 30'.

The valve lead 62a of the suction reed valve 62 is opened during the suction stroke of the piston 50. At this time, the refrigerant in the suction chamber 11 flows through the refrigerant suction hole 61a of the valve plate 61 And sucked into the cylinder bore 31.

In addition, during the compression stroke of the piston 50, the refrigerant inside the cylinder bore 31 is compressed. At this time, the valve lead 63a of the discharge lead valve 63 is opened, and the refrigerant is discharged from the refrigerant of the valve plate 61. 61b) is discharged through the refrigerant discharge port 72 of the muffler 70 through the discharge chamber 12 of the front and rear housings 10 and 10 'and supplied to the condenser.

On the other hand, the refrigerant compressed in the cylinder bore 31 of the front cylinder block 30 is discharged to the discharge chamber 12 of the front housing 10, the connection formed in the front and rear cylinder blocks 30, 30 ' It flows along the passage 33 into the discharge chamber 12 of the rear housing 10 'and is discharged through the refrigerant discharge port 72 together with the refrigerant therein.

However, in the conventional valve unit 60, since the suction lead valve 62 and the discharge lead valve 63 are respectively formed on both sides of the valve plate 61, there are a lot of constituents in the valve unit 60. In addition to the consumption of the material, the volume is unnecessarily large, there is a problem that the production process and assembly process is complicated.

In addition, the conventional valve unit 60 is provided with suction and discharge lead valves 62 and 63 on both sides of the valve plate 61, and is provided on the outer surfaces of the suction and discharge lead valves 62 and 63, respectively. The gaskets 64 and 65 are further installed and provided on both sides of the valve plate 61, so that a high probability of generating a gap between the components is high, and thus refrigerant may leak. There was a likely problem.

Accordingly, the present invention has been made to solve the problems of the prior art as described above, by installing a valve lead for opening and closing the refrigerant suction hole and the refrigerant discharge hole directly to the valve plate, it is unnecessary to configure the suction and discharge lead valve, etc. Since the configuration of the valve unit is simplified, the volume is slim, the production process and assembly process is simplified, and the purpose is to provide a valve unit for the compressor that can reduce the cost.

In the above-described object, a valve plate is provided between a housing of a compressor and a cylinder block, and the valve plate has a refrigerant suction hole and a refrigerant discharge hole in which a refrigerant flows are located on a cylinder bore of the cylinder block. A through hole is drilled in the valve plate between the refrigerant suction hole and the refrigerant discharge hole, and one end thereof is penetrated and fixed to the through hole, and both ends thereof open and close the refrigerant suction hole and the refrigerant discharge hole on both sides of the valve plate. It is achieved by a valve unit for a compressor comprising a valve lead.

In addition, the valve plate is formed to correspond to the cylinder bore, respectively provided in each cylinder bore, the valve plate is formed with one or more protrusions protruding outward, the cylinder bore is fixed fixedly inserted into the projection of the valve plate A groove is formed to prevent rotation of the valve plate installed in the cylinder bore.

In addition, one side of the valve lead fitted into the through hole of the valve plate is bent to correspond to the depth of the through hole, the upper and lower inner peripheral portion of the through hole in contact with the valve lead is formed to be inclined.

In addition, insertion grooves into which valve leads are inserted are formed on both sides of the valve plate, respectively, insertion grooves on both sides are formed to communicate with each other, and the suction grooves and the refrigerant discharge holes are respectively formed in the insertion grooves.

According to the valve unit for a compressor of the present invention, by installing the valve lead directly to the valve plate to open and close the refrigerant suction hole and the refrigerant discharge hole of the valve plate, the conventional suction lead valve and discharge lead valve are unnecessary. The structure is simplified, the volume is slim, the production process and the assembly process are simplified, and the cost is reduced.

Furthermore, when the valve plate is formed in a size corresponding to the cylinder bore and installed in the cylinder bore, the conventional suction side gasket can be removed, thereby further simplifying the configuration of the valve unit, and thereby Simplification and cost savings can be maximized.

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

First, before describing the present invention, the same reference numerals are given to the same parts as in the prior art, and redundant explanations are omitted.

4 to 8 are views showing the valve unit according to each embodiment of the present invention.

The valve unit 100 according to the first embodiment of the present invention, as shown in Figures 4a to 4c, the housing 10 (10 ') and the cylinder block 700 of the compressor 1 (hereinafter, the present invention) Is a valve plate 200 provided between the front and rear cylinder block 30, 30 '(denoted collectively as the front and rear cylinder block 700 collectively), which is divided as in the prior art. .

As shown in FIG. 4A, a plurality of refrigerant suction holes 210 and a plurality of refrigerant discharge holes 220 are formed in the valve plate 200, and one side of the refrigerant suction hole 210 and one side thereof. The valve plate 200 between the refrigerant discharge hole 220 of the slot through hole 230 is formed in the through hole 230, the valve lead 500, 600 to be described later is shown in Figures 4b and 4c It is installed as

Here, in the accompanying drawings of the present invention, only the valve lead 600 having the bent portion 610 to be described below is shown as a preferred embodiment of the valve lead, but since the straight-formed valve lubrication 500 may be provided, In describing the valve lead, reference numerals "500" and "600" will be described together.

Meanwhile, the valve leads 500 and 600 installed as described above may be installed between a pair of adjacent refrigerant suction holes 210 and refrigerant discharge holes 220 positioned on one cylinder bore 710 of the cylinder block. have.

The valve lead 500 has a straight bar shape as shown in FIG. 8A, one end of which is fixed to the through hole 230 of the valve plate 200, and both ends thereof, that is, the suction plate 500a. And the discharge plate 500b are formed to elastically open and close the refrigerant suction hole 210 and the refrigerant discharge hole 220 on both sides of the valve plate 200, respectively.

In addition, the valve lead 600 has a thickness corresponding to the depth of one side, that is, the central portion of the valve lead 600 passing through the through hole 230 of the valve plate 200, as shown in FIG. 8B. It may be formed by the bent portion 610 is bent to.

As described above, the central portion of the valve leads 500 and 600 fitted to the through hole 230 of the valve plate 200 is fixed to the valve plate 200 by means such as riveting or welding to cool the refrigerant. An elastic force is applied to both ends of the valve leads 500 and 600 provided on the suction hole 210 and the refrigerant discharge hole 220, that is, the suction plate 500a and 600a and the discharge plate 500b and 600b. .

In addition, the upper and lower inner peripheral portion of the through-hole 230 in contact with the valve lead 500, 600 is preferably formed to be inclined through chamfering, grinding, etc. as shown in Figures 4c and 5a to be described later.

Accordingly, the through holes 230 and the valve leads 500 and 600 having the inner circumferential portion inclined as described above have the refrigerant in the valve leads 500 and 600 and the through holes 230 due to an increase in the contact area. Leakage is prevented as much as possible, the effect can be further maximized between the valve lead 600 having the bent portion 610 and the through hole 230.

Meanwhile, the valve leads 500 and 600 for opening and closing the refrigerant suction hole 210 and the refrigerant discharge hole 220 as described above are not configured on the suction lead valve 62 and the discharge lead valve 63 as in the related art. By being directly configured in the valve plate 200, the configuration of the valve unit 100 is simplified to simplify the production process and the assembly process and reduce the cost.

The refrigerant circulation process of the compressor 1 having the valve unit 100 of the present invention configured as described above will be described.

The refrigerant supplied from the evaporator is supplied to the swash plate chamber 34 between the front and rear cylinder blocks 700 through the refrigerant suction opening 71 of the muffler 70, and the refrigerant supplied to the swash plate chamber 34 is transferred to the front plate. In addition, along the suction passage 32 formed in the rear cylinder block 700, the fluid flows into the suction chamber 11 of the front and rear housings 10 and 10 '.

Subsequently, during the suction stroke of the piston 50, the suction chambers 500a and 600a of the valve leads 500 and 600 which are fitted into the through holes 230 of the valve plate 200 are opened. The refrigerant of is sucked into the cylinder bore 710 through the refrigerant suction hole 210 of the valve plate 200.

In the compression stroke of the piston 50, the refrigerant inside the cylinder bore 710 is compressed. In this case, the discharge plates 500b and 600b of the valve leads 500 and 600 installed in the valve plate 200 are compressed. As the refrigerant is opened, the refrigerant passes through the discharge chamber 12 of the front and rear housings 10 and 10 ′ through the refrigerant discharge hole 220 of the valve plate 200 and opens the refrigerant discharge port 72 of the muffler 70. It is discharged through and fed to the condenser.

On the other hand, the refrigerant compressed in the cylinder bore 710 of the front cylinder block 700 is discharged to the discharge chamber 12 of the front housing 10, the connecting passage 33 formed in the front and rear cylinder block 700 Along the flow to the discharge chamber 12 of the rear housing (10 ') is discharged through the refrigerant discharge port 72 with the refrigerant therein.

5A to 5C show a valve unit according to a second embodiment of the present invention. Prior to describing the present embodiment, the same reference numerals are given to the same parts as the above-described embodiment. , Duplicate descriptions are omitted.

The valve unit 100 according to the second embodiment of the present invention is a valve installed between the cylinder block 700 and the housing 10 (10 ') of the compressor 1, as shown in Figure 5a to 5c The plate 300 is formed as a size and shape corresponding to the cylinder bore 710 of the cylinder block 700, one valve plate 300 is installed in one cylinder bore 710, respectively.

As shown in FIG. 5A, one refrigerant suction hole 310 and one refrigerant discharge hole 320 through which the refrigerant flows are formed in the valve plate 300 formed as described above, and the refrigerant suction hole is formed. Between the 310 and the refrigerant discharge hole 320, the through-hole 330 of a slot shape through which the valve leads 500 and 600 are installed is formed.

As described above, one or more protrusions 340 protruding outward are formed on an outer circumferential surface of the valve plate 300 installed in the cylinder bore 710 of the cylinder block 700, and at an end of the cylinder bore 710. As shown in FIG. 7, a fixing groove 720 is formed to which the protrusion 340 of the valve plate 300 is inserted and fixed.

Therefore, the valve plate 300 is installed at the end of the cylinder bore 710 by the protrusion 340 and the fixing groove 720 in a non-rotable state.

On the other hand, the valve lead 500, 600 that is inserted into the through-hole 330 of the valve plate 300 formed as described above is the same as the configuration and operation of the above-described embodiment will not be repeated description thereof.

6A to 6C show a valve unit according to a third embodiment of the present invention. Prior to describing the present embodiment, the same parts as in the first and second embodiments will be described. A code | symbol is attached | subjected and the overlapping description is abbreviate | omitted.

6A to 6C, the valve unit 400 may be disposed between the housing 10, 10 ′ and the cylinder block 700 of the compressor 1. It is formed in a size and shape corresponding to the cylinder bore 710, respectively installed in each cylinder bore 710, the valve lead 500, 600 is inserted into both sides of the valve plate 400 so as not to protrude outward. Insertion grooves 450 are formed, respectively.

The insertion groove 450 is formed in a shape corresponding to the valve lead 500, 600, and the refrigerant suction hole 410 and the refrigerant discharge hole 420 are formed at both ends of the insertion groove 450, respectively, Insert grooves 450 on both sides are formed to communicate with each other through the through-hole 430, as shown in the original enlarged view in Figure 6a.

Accordingly, the valve leads 500 and 600 are inserted through the communicating through-holes 430, and the suction plates 500a and 600a and the discharge plates 500b and 600b at both ends of the valve leads 500 and 600, respectively. Are respectively provided on the refrigerant suction holes 410 and the refrigerant discharge holes 420 of both insertion grooves 450.

On the other hand, the through hole 430 of the valve plate 400 is a hole for communicating with both sides of the insertion groove 450 in a straight line, the valve lead in the present embodiment described above in the center of the through hole 430 More preferably, the valve lead 500 having a straight shape without the bent portion 610 is provided.

In addition, since the configuration of the valve leads 500 and 600 of the present embodiment and the coupling structure between the valve plate 400 and the cylinder bore 710 are the same as those of the above-described embodiment, the structure and operation thereof are omitted. do.

Therefore, in the valve unit 100 according to the second and third embodiments of the present invention described above, as shown in FIG. 7, each of the valve plates 300 and 400 formed to correspond to the cylinder bore 710 is angled. By directly installing and sealing the protrusions 340 and 440 and the fixing groove 720 in the cylinder bore 710, the conventional suction side gasket 64 provided on the cylinder block 700 side can be removed.

As such, the conventional suction side gasket 64 can be further eliminated, thereby simplifying the configuration of the valve unit 100, thereby simplifying the production process and the assembly process and reducing the cost of materials. Can be reduced.

On the other hand, in the valve unit 100 according to the present invention as described above, although the conventional suction side gasket 64 can be eliminated, the discharge side gasket 65 is necessary for watertight maintenance.

1 is a cross-sectional view showing a general compressor.

2 is an enlarged cross-sectional view of a conventional valve unit.

3 is an exploded perspective view showing a conventional valve unit.

4A is a view showing the valve plate of the valve unit according to the first embodiment of the present invention.

4B is a coupling diagram of the valve unit according to the first embodiment of the present invention.

4C is a cross-sectional view taken along the line B-B in FIG. 4B.

Figure 5a is a view showing a valve plate of the valve unit according to the second embodiment of the present invention.

5B is a coupling diagram of the valve unit according to the second embodiment of the present invention.

5C is a cross-sectional view of the valve unit according to the second embodiment of the present invention.

6A is a view showing a valve plate of the valve unit according to the third embodiment of the present invention.

6B is a coupling diagram of the valve unit according to the third embodiment of the present invention.

6C is a cross-sectional view of the valve unit according to the third embodiment of the present invention.

7 is a coupling diagram showing a coupling state of the valve unit and the cylinder block according to the second and third embodiments of the present invention.

8 is a view showing a valve lead according to the present invention, Figure 8a is a view showing a valve lead according to a first embodiment, Figure 8b is a view showing a valve lead according to a second embodiment.

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

1: compressor 10, 10 ': housing

20: drive shaft 30, 30 ': cylinder block

31: cylinder bore 40: swash plate

50: piston 60: valve unit

61 valve plate 61a refrigerant suction hole

61b: refrigerant discharge hole 62: suction lead valve

63: discharge lead valve 62a, 63a: valve lead

100: valve unit 200,300,400: valve plate

210,310,410: Refrigerant suction hole 220,320,420: Refrigerant discharge hole

230,330,430: Through hole 340,440: Projection

450: Insertion groove 500,600: valve lead

610: bend portion 700: cylinder block

710: cylinder bore 720: fixing groove

Claims (6)

Valve plates 200, 300, 400 are installed between the housings 10, 10 ′ and the cylinder block 700 of the compressor 1, and the valve plates 200, 300, 400 are refrigerant. The valve unit for the compressor is formed such that the refrigerant suction holes 210, 310, 410 and refrigerant discharge holes 220, 320, 420 are flowed on the cylinder bore 710 of the cylinder block 700 ( 100), Through holes 230, 330, 430 in the valve plates 200, 300, 400 between the refrigerant suction holes 210, 310, 410 and the refrigerant discharge holes 220, 320, 420. ) Is perforated, One end of the through holes 230, 330, 430 is fixed to the through holes 230, and both ends thereof are refrigerant suction holes 210, 310, and 410 of both sides of the valve plates 200, 300, 400. And a valve lead (500) (600) provided to open and close the refrigerant discharge hole (220) (320) (420). The method of claim 1, The valve plate 300, 400 is formed to correspond to the cylinder bore (710) valve unit for the compressor, characterized in that each provided in each cylinder bore (710). 3. The method according to claim 1 or 2, One side of the valve lead 600 fitted into the through holes 230, 330, 430 of the valve plates 200, 300, 400 corresponds to the depth of the through holes 230, 330, 430. Compressor valve unit, characterized in that formed. 3. The method according to claim 1 or 2, The valve unit for the compressor, characterized in that the upper and lower inner peripheral portion of the through hole 230, 330, 430 in contact with the valve lead 500 is formed to be inclined. 3. The method according to claim 1 or 2, Both sides of the valve plate 400 are formed with insertion grooves 450 into which valve leads 500 and 600 are inserted, respectively, and the insertion grooves 450 of both sides are formed to communicate with each other, and the insertion grooves 450 are provided. ) The compressor valve unit, characterized in that the refrigerant suction hole 410 and the refrigerant discharge hole 420 are formed respectively. The method of claim 2, One or more protrusions 340 and 440 protruding outward are formed in the valve plates 300 and 400, and protrusions 340 and 440 of the valve plates 300 and 400 in the cylinder bore 710. Compressor valve unit, characterized in that the fixing groove 720 is inserted is fixed to prevent the rotation of the valve plate 300, 400 installed in the cylinder bore (710).

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