KR19990001896A - Suction and discharge valve assembly for compressor - Google Patents

Abstract

The present invention is fixed to the cylinder block 18 so as to seal the upper portion of the cylinder 20, the suction ports 61, 71, 81, 91 and the discharge port 63 (for suction and discharge of the refrigerant gas) ( The packing 60, the separation discharge valve plate 70, the plate 80, and the suction valve plate 90 having 73, 83, 93 are sequentially provided to the assembling means 66 in the plurality of assembling holes 65. And the discharge port 83 of the plate 80 such that the discharge valve 72 of the separate discharge valve plate 70 and the suction valve 92 of the suction valve plate 90 are opposed to each other according to the internal pressure of the cylinder 20. And a suction width 94 formed between the suction valve plate 90 and the suction valve 92 in the compressor 10 having the suction and discharge valve assembly 58 for opening and closing the suction port 81. ) Is formed as narrow as possible, and when the compressor 10 is operated, a groove portion 94a is formed in the slit width 94 where the maximum bending force is applied by opening and closing the suction valve 92 so that the barreling mediaAddressing a given hit the sleeve teupok working surface to both ends of the end to completely remove the micro-cracks generated after black king processing it is possible to improve the reliability of the compressor valve.

Description

Suction and discharge valve assembly for compressor

The present invention relates to a suction and discharge valve assembly for a compressor, and in particular, in order to increase the efficiency of the compressor, the slitting width between the valve plate and the valve is narrowly formed when the valve plate is pressed, and the slitting width can be easily separated from the processing surface. The present invention relates to a compressor inlet and discharge valve assembly for forming grooves at both ends of the tread so that the width thereof is narrow, thereby preventing cracking caused when the machining surface is separated, thereby improving the reliability of the compressor valve.

In general, a compressor converts mechanical energy into compressed energy of a compressive fluid. The compressor sucks refrigerant gas from a low pressure evaporator and raises the pressure to a condensing pressure. Rotary compressors. There is a turbo compressor type.

3 is a plan view showing the internal structure of a conventional hermetic reciprocating compressor, and FIG. 4 is a cross-sectional view taken along line 2-2 of FIG. 3, wherein the reciprocating compressor (hereinafter referred to as the compressor) 10 is provided with the upper and lower cases 14 The upper and lower cases 14 and 12 are enclosed in the inside of the upper and lower cases, and the upper and lower cases 14 and 12 are spaced apart from the upper and lower cases 14 and 12 by compression springs or leaf springs, which are appropriate dust and soundproofing means. Is supported by the frame 24 at the bottom or side.

In addition, the compressor is composed of a cylinder block 131 fixed to the upper portion of the frame 24 in a horizontal shape and a piston 14 inserted into the cylinder 13 therein so as to reciprocate, and the piston 14 The suction and discharge valve assembly 15 provided at the left end of the cylinder block 131 is formed by the reciprocating motion of the cylinder block 131 to inhale the refrigerant gas of low temperature and low pressure, and discharge the refrigerant gas of high temperature and high pressure. And the discharge valve assembly 15 is to be opened and closed passively by the pressure difference acting on both sides.

The reciprocating compressor configured as described above includes a suction pipe 22 and a suction muffler 16 fixedly sealed to the upper and lower casings 14 and 12 during the backward movement of the piston 14. The high temperature and high pressure refrigerant gas discharged from the compressor during the forward movement of the piston 14 is introduced into the suction valve of the suction and discharge valve assembly 15 from an external evaporator through the suction and discharge valve assembly 15. The discharge pipe 231 is discharged to the external evaporator through the discharge pipe connecting pipe 23 fixedly sealed to the discharge pipe 231 and the upper to lower casings 14 and 12.

In addition, the refrigerant charging pipe 221 is hermetically fixed to the lower case 12, and is initially sealed after filling the refrigerant gas therein.

On the other hand, the electric motor is composed of a stator 18 is fixed to the lower portion of the frame 24 and a rotor 19 to rotate with a gap between the stator 18, the rotor 19 is a rotating shaft It is fixed to 20 and is rotatably supported on frame 24 to rotate together.

The rotating shaft 20 of the electric motor is formed to protrude the eccentric shaft 21 to the top of the frame 24 at the end to connect the piston 14 to the eccentric shaft 21 by the connecting rod and the number of eccentric shaft 21 Piston 14 is to reciprocate as much as the amount of eccentric rotation.

FIG. 2 is an exploded perspective view illustrating a suction and discharge valve assembly for discharging a refrigerant compressed at a high temperature and a high pressure in a cylinder after inhaling a refrigerant having a low temperature and a low pressure as described above. 50. Second Edition 52. The third plate 54 is configured to form a suction chamber 56 and a discharge chamber 55 having a predetermined shape, and the first to third plates 50, 52, and 54 are brazed. It is done.

In addition, the packing 60 to one side of the suction and discharge valve assembly (15). Separated discharge valve plate (70). Plate 80. The suction valve plate 90 and the like are sequentially assembled.

In the suction and discharge valve assembly 15 configured as described above, when the piston 14 moves backward, the low-temperature and low-pressure refrigerant introduced into the suction pipe 22 is sucked through the suction muffler 16. ). Plate 80. Separated discharge valve plate (70). It is sucked into the suction chamber 56 of the suction and discharge valve assembly 15 through the suction ports 91, 81, 71, 61 of the packing 60, to prevent the noise caused by the resonance sound. In this case, the discharge valve 72 of the separate discharge valve plate 70 blocks the discharge port 83 of the plate 80 to prevent the backflow of the refrigerant gas.

On the other hand, the refrigerant sucked into the suction chamber 56 by the backward movement of the piston 14 is again the cylinder 20 through the suction ports 61, 71, 81, 91 of the suction and discharge valve 26. In this process, the refrigerant gas is opened in a state in which the suction valve 92 is pulled into the cylinder 13 by the slit width 94 formed in the suction valve plate 90 in accordance with the pressure in the cylinder 20. Is inhaled.

When the piston 13 moves forward for discharging, the suction valve 92 of the suction valve plate 90 pulled into the cylinder 14 blocks the suction port 81 of the plate 80. Then, the discharge port 83 of the plate 80, which is blocked by the discharge valve 72 of the separate discharge valve plate 70, is opened so that the refrigerant compressed in the cylinder 14 discharges the discharge ports 93 and 83 ( 73) is discharged to the discharge chamber 55 through 63, and then discharged to the discharge pipe 231 through the discharge muffler (17).

However, the suction and discharge valve assembly is to improve the compression efficiency by reducing the volume of the valve plate and the valve by forming a narrow width between the valve plate and the valve when the valve plate press processing for high efficiency of the compressor. However, when the slitting width is formed to a certain width as if it wraps outside the valve, the slitting width is narrow when the barreling media hits the pressed slitting width processing surface. Therefore, it is pointed out that the cracking phenomenon occurs at the end of the slit width forming portion of the suction valve plate as the machining surface is separated.

The present invention is to solve the above problems, in order to improve the efficiency of the compressor, the slitting width between the valve plate and the valve is formed narrow when the valve plate is pressed, and both ends of the slit width to facilitate the separation of the processing surface of the slit width It is an object of the present invention to provide a compressor inlet and discharge valve assembly in which a groove portion is formed in the narrow portion to prevent cracking occurring at both ends of the slit width when the processing surface is separated to improve the reliability of the compressor valve.

The present invention is fixed to the cylinder block to seal the upper part of the cylinder is packed with a suction port and a discharge port for the suction and discharge of the refrigerant gas and the discharge valve plate and the plate and the suction valve plate in order to assemble in a plurality of assembly holes In the compressor having a suction and discharge valve assembly is assembled so that the discharge valve of the separate discharge valve plate and the suction valve of the suction valve plate to open and close the discharge port and the suction port of the plate opposite to each other in accordance with the internal pressure of the cylinder, The slitting width formed between the suction valve plate and the suction valve is formed to be as narrow as possible, and a groove is formed in the slitting width portion at which the maximum bending force is applied by opening and closing the suction valve during compressor operation.

1 is an exploded perspective view illustrating a suction and discharge valve assembly according to the present invention;

2 is an exploded perspective view for explaining a conventional suction and discharge valve assembly,

3 is a cross-sectional view taken along line 2-2 of FIG. 4;

Figure 4 is a plan view showing the internal structure of a conventional hermetic reciprocating compressor.

* Explanation of symbols on the main parts of the drawings *

10: compressor 131: cylinder block

13: cylinder 60: packing

61.71.81.91: Suction port 70.100: Separated discharge valve plate

80: plate 90: suction valve plate

92: suction valve 94: slit width

94a: groove

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

1 is an exploded perspective view for explaining a suction and discharge valve assembly for a compressor according to the present invention, the suction and discharge valve assembly 15 is cut into a predetermined size of the first plate (50). Second Edition 52. The third plate 54 is configured to form a suction chamber 56 and a discharge chamber 55 having a predetermined shape, and the first to third plates 50, 52 and 54 are brazed and coupled. It is done.

In addition, packing (60) to one side of the suction and discharge valve (26). Separated discharge valve plate (70). Plate 80. The suction valve plate 90 and the like are sequentially assembled to constitute the suction and discharge valve assembly 15, and a slitting width 94 is narrowly formed between the suction valve plate 90 and the suction valve 92. A slit width 94 having a groove portion 94a formed outside the lower ends of the valve 92 is configured to open and close the suction port 81 of the plate 80 during assembly.

Therefore, when the grooves 94a are formed at both ends of the slit width 94 as described above, the volume of the grooves 94a increases, but the overall slit width 94 outside the intake valve 92 is as narrow as possible. It is possible to reduce the volume by forming a reduced width by sufficiently reducing the distance between the suction valve plate 90 and the suction valve 92.

Further, when the slitting width 94 is pushed out of the slitting width 94 by the grooves 94a formed at both ends of the slitting width 94, the slitting width 94 is pressed against the slitting width 94 pressed surface. By hitting both ends of the 94, the process surface is separated as in the prior art to prevent the cracking phenomenon generated in the end portion of the slitting width 94 formed portion of the suction valve plate 90.

As described above, the present invention forms a narrow width between the valve plate and the valve when the valve plate is press-processed to increase the efficiency of the compressor, and both ends are provided with grooves at both ends of the slit width so that the processing surface of the slits can be easily separated. By forming the slitting width processing surface on which the barreling media is pressed to both ends, the microcracks generated after the blacking process can be completely removed to improve the reliability of the valve for the compressor.

Claims (1)

It is fixed to the cylinder block 131 to seal the upper part of the cylinder 13, and suction ports 61, 71, 81, 91 and discharge ports 63, 73 (for suction and discharge of refrigerant gas) 83 and 93, the packing 60, the separate discharge valve plate 70, the plate 80 and the suction valve plate 90 are sequentially assembled by the assembly means 66 in a plurality of assembly holes (65) According to the internal pressure of the cylinder 13, the discharge port 83 and the suction port 80 of the plate 80 are disposed so that the discharge valve 72 of the separate discharge valve plate 70 and the suction valve 92 of the suction valve plate 90 are opposite to each other. A compressor (10) having a suction and discharge valve assembly (15) adapted to open and close a port (81), Slit width 94 formed between the suction valve plate 90 and the suction valve 92 as narrow as possible, the maximum bending force acts by opening and closing the suction valve 92 during the operation of the compressor 10 A suction and discharge valve assembly for a compressor, characterized in that a groove (94a) is formed in a portion of the width (94).