KR200141494Y1 - Valve of a compressor - Google Patents

Abstract

The present invention relates to a valve device of a compressor for compressing and discharging the sucked refrigerant gas in the compressor for compressing and discharging the refrigerant gas sucked into the cylinder by the reciprocating operation of the piston, is coupled to one side of the cylinder (8) A valve plate 20 having a suction port 22 and a discharge port 24 for suctioning and discharging refrigerant gas, a valve plate 32 for opening and closing the suction port 22 and a discharge hole communicating with the discharge port 24 ( A valve member 30 having a 34, a suction chamber 52 coupled to one side of the valve plate 20 via a gasket 40, and a suction pipe 56 connected thereto, and a discharge chamber through which refrigerant gas is discharged ( 54) formed cylinder heads 50 to block the heat transferred from the discharge chamber to the suction chamber to prevent re-expansion of the suction refrigerant gas due to overheating of the suction chamber and increase the suction amount of the refrigerant gas being sucked. Improve compression efficiency In addition to simplifying the structure it is easy to assemble and to reduce the manufacturing cost.

Description

Valve device of compressor

1 is an overall longitudinal cross-sectional view of a typical hermetic compressor.

2 is a partial cross-sectional view showing a valve device applied to a conventional compressor.

Figure 3 is an exploded perspective view showing a valve device of the compressor according to the present invention.

Figure 4 is a cross-sectional view showing a valve device of the compressor according to the present invention.

Figure 5 is a cross-sectional view showing the operating state of the subject innovation.

* Explanation of symbols for main parts of the drawings

8: cylinder 20: valve plate

22: suction port 24: discharge

30: valve member 32: suction valve

32a: recess 34: discharge hole

40: gasket 50: cylinder head

52: suction chamber 54: discharge chamber

56 suction pipe 56a bend

60: heat shield member

The present invention relates to a compressor that is applied to an air conditioner, a refrigerator, and the like to repeatedly suck a low pressure and a low temperature refrigerant, compress it to a high pressure, a high temperature, and send the same to a condenser. The present invention relates to a valve device of a compressor that is capable of increasing the amount of suction gas and improving efficiency.

In general, the hermetic compressor is provided with an electric motor 4 including a rotor 2 and a stator 3 on the upper side of the case 1, as shown in FIG. The rotating shaft (5) having a crank shaft (5a) on the lower side is installed freely rotating, the crank shaft (5a) is coupled to the connecting rod (6) for converting the rotational movement into a linear movement, the connection The piston 7 is coupled to the front end of the connecting rod 6 and is configured to reciprocate in the cylinder 8.

In addition, one side of the electric motor (4) is provided with a silencer (10) for attenuating the noise generated when the suction refrigerant introduced into the case (1) through the suction pipe (9) to the cylinder (8) side, On one side of the cylinder (8), through the gasket (1la), (11b) and the valve plate 12, the refrigerant flowing through the muffler (10) is sucked into the cylinder (8) to discharge the high pressure The cylinder head 13 is coupled, the rotary shaft 5 is rotatably supported by the support bearing 14, the oil (15) stored in the lower side of the case 1 below the muffler (10) Is connected to a capillary 16.

Therefore, when the rotor 2 and the rotating shaft 5 are rotated by a magnetic field formed by applying power to the electric motor 4, the connecting rod coupled to the crank shaft 5a of the rotating shaft 5 ( 6) converts the rotational movement into a linear movement. Accordingly, the piston 7 coupled to the distal end of the connecting rod 6 repeatedly performs a linear reciprocating movement in the cylinder 8 through the silencer 10. The sucked refrigerant is compressed and discharged.

However, in such a compressor, it is well known that the valve device for sucking and discharging refrigerant gas has a great influence on the compression performance and the compression efficiency of the compressor.

In the valve device applied to the conventional compressor, as shown in FIG. 2, a suction chamber 13a is formed on the upper side of the cylinder head 13 to which the suction pipe 9 is connected, and a discharge chamber 13b is disposed on the lower side thereof. The inlet 12a and the outlet 12b communicating with the suction chamber 13a and the discharge chamber 13b are respectively formed on one side of the cylinder head 13 via a gasket 11a. The valve plate 12 is coupled, and the valve plate 12 is fixed to the suction valve 17 and the discharge valve 18 which are opened and closed according to the suction and pressure of the refrigerant gas, respectively, and the valve plate 12 Is fixedly coupled to the cylinder 8 via a gasket 11b on one side.

Therefore, when the piston 7 is driven backward by the rotational operation of the rotary shaft 5, the suction valve 17 is opened, so that the refrigerant gas is sucked into the cylinder 8 through the suction port 12a, and conversely, the piston ( When 7) advances, the discharge valve 18 is opened, and the compressed refrigerant gas is discharged to the discharge chamber 13b through the discharge port 12b.

However, in the conventional technology configured as described above, since the refrigerant gas sucked into the cylinder is temporarily stored in the suction chamber and sucked into the cylinder by the suction force of the piston, the suction amount of the refrigerant gas is not sufficient, and the heat of the discharge chamber heated to a high temperature is sucked in. As the refrigerant is re-expanded at the beginning of the suction as it is transferred to the chamber, the suction amount of the refrigerant gas is reduced, and thus, the suction amount of the refrigerant is reduced, and the compression efficiency is significantly reduced. There was this.

The present invention is devised to solve the above-described problems of the prior art, the object of the present invention is to increase the amount of refrigerant gas input and at the same time block the transfer of heat from the discharge chamber to the suction chamber to increase the compression efficiency. It is to provide a valve device of the compressor.

Another object of the present invention is to provide a valve device of a compressor that can significantly reduce the manufacturing cost by simplifying the structure.

The valve device of the compressor according to the present invention devised to achieve the above object is a compressor for compressing and discharging the refrigerant gas sucked into the cylinder by the reciprocating operation of the piston, is coupled to one side of the cylinder and sucks the refrigerant gas And a valve member having a suction port for discharging and a discharge port formed therein, a valve member having a valve plate for opening and closing the suction port, and a discharge hole communicating with the discharge port, and a suction pipe connected to one side of the valve plate via a gasket and connected to a suction pipe. The cylinder head is formed by forming a chamber and a discharge chamber through which the refrigerant gas is discharged, thereby preventing heat from being transferred from the discharge chamber to the suction chamber to prevent re-expansion of the suction refrigerant gas due to overheating of the suction chamber. Increasing suction volume not only improves the compression efficiency, but also simplifies the structure and simplifies fabrication. And that can reduce the cast to its features.

Hereinafter, a preferred embodiment of the present invention will be described in more detail with reference to FIGS. 3 to 5.

In the drawing, reference numeral 20 denotes a valve plate coupled to one side of the cylinder 8 via a valve member 30, and the valve head 20 includes a cylinder head 50 via a gasket 40. It is fastened.

In the valve plate 20, an inlet port 22 through which refrigerant gas is sucked is formed at an upper side thereof, and a guide chamber 24a is formed at a periphery thereof to discharge refrigerant gas compressed in the cylinder 7 below. The discharge port 24 is formed.

In addition, the valve member 30 is opened and closed elastically by the pressure according to the reciprocating operation of the piston 7 to intake the refrigerant gas 32 into the inside of the cylinder 8 through the suction port 22. Is formed, a discharge hole 34 is formed on one side of the intake valve 32 in communication with the discharge port 24 to discharge the compressed refrigerant gas, the lower side of the suction valve 32 A pair of recesses 32a are formed to apply an elastic force to prevent the suction valve 32 from being excessively opened when the gas is sucked.

On the other hand, a cylinder head 50 coupled to one side of the valve plate 20 via a gasket 40 is formed with a suction chamber 52 communicating with the suction valve 32 and the suction port 22 thereon. In the lower side, a discharge chamber 54 communicating with the discharge hole 34 and the discharge port 24 is formed.

In addition, a suction pipe 56 for sucking refrigerant gas is connected to the suction chamber 52, and a bent portion 56a is provided at the tip of the suction pipe 56 to face the suction port 22 and the suction valve 32. And a tip of a capillary tube 58 for supplying oil is connected to the suction pipe 56, and heat in the discharge chamber 54 is connected to an upper inner surface of the discharge chamber 54. The heat shield member 60 is attached to block the transmission to the.

The heat shield member 60 is preferably attached to the inner surface of the discharge chamber 54 corresponding to the suction chamber 52, the material may be formed of a metal material having a heat insulating function or a plastic material having excellent heat resistance and heat insulating properties. Can be.

In the drawing, reference numeral 62 denotes a fastening bolt for coupling and fixing the valve member 30, the valve plate 20, the gasket 40, and the cylinder head 50 to one side of the cylinder 8 on one side of the cylinder 8. Indicates.

Next will be described the operation and effect of the valve device of the compressor according to the present invention configured as described above.

First, when the suction force acts on the cylinder 8 according to the reverse operation of the piston 7, the suction valve which is in contact with the side surface of the valve plate 20 and closes the suction port 22 as shown in FIG. The upper side of the 32 is separated from the suction port 22, the suction of the refrigerant gas is made.

Therefore, when the refrigerant gas flowing into the suction pipe 56 is discharged through the bent portion 56a, the refrigerant gas discharged to the bent portion 56a is formed through the inside of the suction port 22 and the suction valve 32. Inhalation is made into the cylinder (8), wherein the refrigerant gas sucked into the cylinder (8) increases the suction amount as the bent portion (56a) of the suction pipe (56) is located toward the suction port (22), thereby increasing the compression efficiency. It will be able to increase.

In addition, the inlet valve 32 opened and closed by the suction force of the piston 7 is provided with a recess 32a to prevent the inlet valve 32 from being excessively separated from the inlet 22 during inhalation. At the same time it will be to open and close quickly.

On the other hand, when the piston 7 retracted in the cylinder 8 performs the forward operation, as shown in FIG. 5, the suction valve 32 closes the inlet port 22 and the refrigerant in the cylinder 8 at the same time. To compress the gas.

Accordingly, the refrigerant gas compressed in the cylinder 8 is discharged into the guide chamber 24a formed in the valve plate 20 through the discharge hole 34 and then discharged into the discharge chamber 54 through the discharge port 24. Compressed high-temperature refrigerant gas is to circulate.

In this case, the blocking member 60 is attached to the upper inner surface of the discharge chamber 54 to block the heat in the discharge chamber 54 heated by the high temperature refrigerant gas from being transferred to the suction chamber 52. By preventing the re-expansion of the refrigerant gas sucked into the suction chamber 52 to increase the suction amount of the refrigerant gas, it is possible to significantly improve the compression efficiency.

In addition, as the tip of the capillary tube 58 is positioned at the tip of the suction tube 56, the oil is more smoothly supplied.

According to the valve device of the compressor according to the present invention as described above, by blocking the heat transferred from the discharge chamber to the suction chamber to prevent re-expansion of the suction refrigerant gas due to overheating of the suction chamber and at the same time the suction amount of the refrigerant gas sucked in In addition to improving the compression efficiency by simplifying the structure has a number of excellent advantages such as easy to assemble and reduce the manufacturing cost by simplifying the structure.

Claims (3)

A cylinder head having a suction chamber and a discharge chamber separated from each other, and a suction pipe extending to the suction chamber, a valve plate having a suction port configured to introduce refrigerant into the suction chamber, and a suction valve intermittently limited to the valve plate. A valve apparatus of a compressor including a suction valve, the compressor comprising: a shielding member installed at a portion separating the suction chamber and the discharge chamber, and configured to block heat from the idler discharge chamber from being transferred to the suction chamber. Valve device. The valve apparatus of claim 1, further comprising a recess formed to reduce the elastic bending force of the suction valve. The valve apparatus of claim 1, wherein a cross section of the suction pipe is formed in a triangular shape and a bent portion is formed to be bent toward the inlet suction port.