KR19990005435A - High Efficiency Discharge Valve Assembly in Hermetic Compressor - Google Patents

Abstract

The present invention is installed on the discharge valve 153 is opened and closed for the discharge of the high-pressure gas and the backing spring 154 and the discharge valve 153 to elastically limit the opening and closing area of the discharge valve 153 and In a hermetic compressor having a high-efficiency discharge valve assembly (15) consisting of a valve plate (151) consisting of a stopper (155) that restricts the backing spring (154) to remain in place, protruding banding above the backing spring (154). And a stopper 155 having a cushioning portion 154a formed therein and a stopper 155 having a seating portion 155a having the same shape as the buffering portion 154a on the lower surface so that the buffering portion 154a can be seated and supported. When colliding with this stopper, the impact contact area can be minimized, and a buffer space can be secured, thereby reducing noise during collision of the discharge valve, and also reducing the impact caused by the collision of the discharge valve to extend the life of the discharge valve. .

Description

High Efficiency Discharge Valve Assembly in Hermetic Compressor

The present invention relates to a high-efficiency discharge valve assembly of a hermetic compressor, and in particular, when the discharge valve and the backing spring collide with the stopper when the refrigerant is discharged through the discharge port of the valve plate, it minimizes the collision contact area and at the same time secures a buffer space. The present invention relates to a high efficiency discharge valve assembly of a hermetic compressor to mitigate the impact of the discharge valve to reduce the noise caused by the vibration sound and to extend the life of the discharge 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.

2 is a cross-sectional view showing the internal structure of a general hermetic reciprocating compressor, in which a reciprocating compressor (hereinafter referred to as a compressor) 10 is hermetically housed inside the upper and lower cases 14 and 12, and Supported by the frame 24 at the bottom or side of the upper and lower cases 14 and 12 at a predetermined distance from the upper and lower cases 14 and 12 by compression springs or leaf springs, which are suitable dustproof and soundproofing means. It is done.

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 by the reciprocating motion of the cylinder block 131 is configured to suck the low temperature and low pressure refrigerant gas and discharge the high temperature and high pressure refrigerant gas. 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 and a suction muffler (not shown) fixedly sealed to the upper or lower casing 14 and 12 during the backward movement of the piston 14. The inlet and discharge valve assembly 15 is introduced into the intake valve of the suction and discharge valve assembly 15 through the external evaporator, and the high temperature and high pressure refrigerant gas discharged from the compressor during the forward movement of the piston 14 is the suction and discharge valve assembly 15. From the discharge valve of the discharge pipe 231 and through the discharge pipe connecting pipe 23 is fixed to the upper to lower casing (14, 12) is sent to the external evaporator.

Figure 3 is an exploded perspective view for explaining the high-efficiency discharge valve assembly of a conventional hermetic compressor for sucking and discharging the refrigerant in accordance with the reciprocating motion of the piston as described above, Figure 4 is a cross-sectional view showing a coupled state, the discharge valve assembly is a valve plate 151, the suction muffler 159, and the valve cover 158.

The valve plate 151 consists of a packing 157, a discharge valve 153, a backing spring 154, a stopper 155, and a support plate 156, and the valve plate 151 discharges into the cylinder. A port 152 is formed, and the discharge valve 153 is installed on the upper portion of the discharge port 152 so as to be opened and closed to discharge the high pressure gas.

In addition, the backing spring 154 is installed to open and close the discharge valve 153 for the discharge of the high-pressure gas, the backing spring 154 is installed on the upper portion of the discharge valve 153 to elastically open and close the opening and closing area. In addition, the stopper 155 restricts the discharge valve 153 and the backing spring 154 to be held in place, and the support plate 156 is installed on the top of the stopper 155 to stabilize the stopper 155. Supported.

On the other hand, the outlet portion 159a of the suction muffler 159 is seated on the upper surface of the suction port of the valve plate 151, and then the valve cover 158 is installed and fixed to the upper part, thereby assembling the assembly of the discharge valve assembly 15. You are done.

Therefore, when the discharge valve 153 is opened in the high efficiency discharge valve assembly 15 including the valve plate 151, the discharge valve 153, the backing spring 154, and the stopper 154, the backing spring 154 is first. And the discharge valve 153 is displaced upward while the discharge valve 153 is in contact with the backing spring 154 to cause a secondary collision with the stopper 155 limiting the opening degree of the discharge valve 153. The efficiency of the valve assembly 15 can be improved.

However, prior to employing the high efficiency discharge valve assembly, opening of the discharge valve only by a single collision between the discharge valve and the stopper first collides with the backing spring 154, and then the discharge valve 153 comes into contact with the backing spring 154. It is pointed out as a problem that a secondary collision with the stopper 155 is caused to be displaced upward while improving efficiency by employing the high-efficiency discharge valve assembly 15, accompanied by an increase in the number of vibrations and a decrease in the lifetime of the discharge valve. It is becoming.

The present invention is to solve the above problems, to minimize the impact contact area when the discharge valve and the backing spring collides with the stopper to form a buffer in the backing spring to secure a buffer space, and also to seat the buffer on the stopper It is an object of the present invention to provide a highly efficient discharge valve assembly of a hermetic compressor that can support the same shape of the mounting portion to prolong the life of the discharge valve through noise reduction and shock relief according to the discharge valve vibration sound.

The present invention is a discharge valve that is opened and closed for the discharge of the high pressure gas and the backing spring is installed on top of the discharge valve and the stopper to limit the discharge valve and the backing spring to be maintained in place to elastically limit the opening and closing area A highly efficient hermetic reciprocating compressor having a configured valve plate, comprising: a buffer formed by protruding and bending to an upper portion of the backing spring, and a stopper having a seat formed in the same shape as that of the buffer so as to be able to be seated and supported by the buffer; It is done.

1 is a cross-sectional view showing a high efficiency discharge valve assembly of a hermetic compressor according to the present invention;

2 is a cross-sectional view showing the internal structure of a general hermetic reciprocating compressor;

3 is an exploded perspective view illustrating a high efficiency discharge valve assembly of a conventional hermetic compressor;

Figure 4 is a cross-sectional view showing a coupling state of the high efficiency discharge valve assembly of a conventional hermetic compressor,

Explanation of symbols for main parts of the drawings

15: discharge valve assembly 151: valve plate

152: discharge port 153: discharge valve

154: backing spring 154a: buffer

155: stopper 155a: seating portion

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

1 is a cross-sectional view illustrating a high efficiency discharge valve assembly of a hermetic compressor according to the present invention, wherein the high efficiency discharge valve assembly 15 includes a valve plate 151 having a discharge port 152, a discharge valve 153, and a backing spring 154. ) And the stopper 155.

The high efficiency discharge valve assembly 15 configured as described above is formed in the valve plate 151 so that the discharge valve 153 is opened and closed for the discharge of the high pressure gas on the upper portion of the discharge port 152 leading into the cylinder 13. It is installed.

In addition, the backing spring 154 protruded upwardly and the buffering portion 154a is formed is installed in the upper part of the discharge valve 153 when the discharge valve 153 opens and closes for discharge of the high pressure gas to elastically open and close the opening / closing area. And a stopper 155 having a seating portion 155a having the same shape as the buffering portion 154a on the lower surface of the backing spring 154 so as to seat the buffering portion 154a. 155 limits the discharge valve 153 and the backing spring 154 to remain in place.

Therefore, when the piston 14 moves forward in the cylinder 13, the pressure in the cylinder 13 is greater than the pressure in the discharge chamber of the valve cover 158 so that the discharge valve 153 is fixed at one end. It is to be the first collision with the buffer portion 154a of the backing spring 154, the bending space is rotated upward against the elastic force of its own formed a buffer space.

In addition, the backing spring 154 and the buffer portion 154a are seated on the lower surface of the stopper 155 to minimize the collision contact area when the discharge valve 153 and the backing spring 154 collides with the stopper 155 secondly. By reducing the vibration sound of the discharge valve 153, and also to mitigate the impact caused by the collision, it is possible to extend the life of the discharge valve 153.

As described above, the present invention minimizes the collision contact area when the discharge valve and the backing spring collide with the stopper, and also secures a buffer space, thereby reducing noise when the discharge valve collides, and also reducing the impact due to the collision of the discharge valve. The life of the discharge valve can be extended.

Claims (1)

The discharge valve 153 is opened and closed to discharge the high pressure gas and the backing spring 154 and the discharge valve 153 and the backing spring that is installed on the upper portion of the discharge valve 153 to elastically limit the opening and closing region ( In a hermetic compressor having a high-efficiency discharge valve assembly (15) consisting of a valve plate (151) consisting of a stopper (155) that restricts 154 to remain in place, a buffer formed by projecting and bending over the top of the backing spring (154). High efficiency of the hermetic compressor comprising a stopper 155 having a seating portion 155a having the same shape as the buffering portion 154a on the lower surface such that the portion 154a and the buffering portion 154a can be seated and supported. Discharge valve.