KR200317647Y1 - Sucking and discharge valve assembly of a airtight compressor - Google Patents

Abstract

The present invention relates to a suction and discharge valve assembly of a hermetic compressor, wherein a plurality of iron plates are brazed sequentially on the lower side of the valve cover, and a valve plate having suction and discharge ports formed on the lower side of the iron plate is coupled to open and close the discharge port. In a suction and discharge valve assembly for a hermetic compressor in which a discharge valve and a backing spring for elastically defining an opening and closing area of the discharge valve and a valve stopper for improving the response characteristics of the discharge valve are sequentially stacked on each other and installed on the valve plate. , The discharge valve, the backing spring and the valve stopper overlap each other so that one end is cocked and installed on the valve plate by one rivet, and the discharge valve, the backing spring and the valve stopper are installed on the valve plate so that rotation of the valve plate is suppressed. Each end of the discharge valve, backing spring and valve stopper It characterized in that the rotation inhibiting projection to be fixed. Therefore, the present invention reduces the number of caulking operations of the discharge valve, the backing spring, and the valve stopper and reduces the use of rivets while fixing the discharge valve so as not to cause rotation to accurately open and close the discharge port of the valve plate. Simplify and reduce manufacturing costs.

Description

SUCKING AND DISCHARGE VALVE ASSEMBLY OF A AIRTIGHT COMPRESSOR}

The present invention relates to an intake and discharge valve assembly of a hermetic compressor, and more particularly, to a coking operation of a discharge valve, a backing spring, and a valve stopper while fixing the discharge valve without causing rotation to accurately open and close the discharge port of the valve plate. A suction and discharge valve assembly of a hermetic compressor which reduces the number of times and reduces the use of rivets.

In general, a compressor converts mechanical energy into compressed energy of a compressive fluid. The compressor absorbs refrigerant gas in a low pressure evaporator and increases the pressure to a condensation pressure. Rotary compressors. There is a turbo compressor type.

The compressor is used in a refrigerator or an air conditioner, and when used in a refrigerator, the inside of the refrigerator is used as a low heat source, and the saturated steam of a low boiling point refrigerant having the outside as a high heat source is compressed to a high pressure and flowed to a condenser.

In the condenser, latent heat of evaporation is released from the high-temperature and high-pressure refrigerant to a high heat source outside the refrigerator, causing a phase change to a liquid refrigerant gas. The liquid refrigerant gas is throttled to low temperature and low pressure through an expansion valve. It enters the evaporator.

On the other hand, the refrigerant gas of low temperature and low pressure in the evaporator mostly absorbs latent heat from the low heat source inside the refrigerator as a liquid phase, changes phase into a saturated vapor refrigerant gas, and then flows back into the compressor to form a refrigeration cycle. A suction and discharge valve assembly is provided that opens and closes to discharge the high pressure gas.

1 is a side view showing a suction and discharge valve assembly of a conventional hermetic compressor, Figure 2 is a side sectional view showing a suction and discharge valve assembly of a conventional hermetic compressor, Figure 3 is a suction and discharge of the conventional hermetic compressor. An exploded perspective view showing the main part of the valve assembly.

As shown, the suction and discharge valve assembly 10 of the conventional hermetic compressor has a plurality of iron plates 12 and 13 are sequentially brazed and welded to the lower side of the iron plate 13 under the valve cover 11. The valve plate 14 having the discharge ports 14a and 14b are coupled to each other, and the backing spring elastically restricts the opening / closing area of the discharge valve 15 and the discharge valve 16 to open and close the discharge port 14a. 16 and the valve stopper 17 which improves the response characteristic of the discharge valve 15 are sequentially overlapped with each other and are installed by caulking on the valve plate 14.

The suction and discharge valve assembly 10 is provided with a discharge muffler 20 that reduces noise generated by pulsation of pressure when the refrigerant gas of high temperature and high pressure is discharged on the discharge side of the outside.

The suction and discharge valve assemblies 10 of the conventional hermetic compressor have a discharge valve 15, a backing spring 16, and a valve stopper 17 each of which is overlapped with one another on the valve plate 14 in a pair. Is cocked by the rivet (R) of the coupling, the valve stopper 17 is coupled to the other end is cocked on the valve plate (14).

Thus, one end of each of the discharge valve 15, the backing spring 16, and the valve stopper 17 is fixed on the valve plate 14 by a pair of rivets R to prevent them from causing rotation. to be. That is, the discharge valve 15 is to open and close the discharge port 14b of the valve plate 14 correctly.

However, only one end of each of the discharge valve 15, the backing spring 16, and the valve stopper 17 is fixed to the valve plate 14 by a pair of rivets R, thereby increasing the number of caulking operations. In addition, the amount of use of the rivet (R) is increased and the assembly process is complicated, thereby providing a cause for raising the manufacturing cost.

Accordingly, the discharge valve 15, the backing spring 16, and the valve stopper 17 each have their own ends while suppressing rotation so that the discharge valve 15 opens and closes the discharge port 14b of the valve plate 14 accurately. There was a need to reduce the number of caulking operations.

The present invention is to solve the above-mentioned conventional problems, an object of the present invention is to caulk the discharge valve, the backing spring, and the valve stopper while fixing the discharge valve does not cause rotation to open and close the discharge port of the valve plate accurately In order to simplify the assembly process by reducing the number of times and to reduce the use of rivets, and to provide a suction and discharge valve assembly of the hermetic compressor to reduce the manufacturing cost.

The present invention for realizing the above object is a plurality of iron plate is sequentially brazed and welded to the lower side of the valve cover, the lower side of the iron plate is coupled to the valve plate is formed, the discharge valve for opening and closing the discharge port and An intake and discharge valve assembly for a hermetic compressor, in which a backing spring for elastically restricting the opening and closing area of the discharge valve and a valve stopper for improving the response characteristics of the discharge valve are sequentially stacked on each other and installed on the valve plate. The backing spring and the valve stopper overlap each other so that one end is cocked and installed on the valve plate by one rivet, and the discharge valve, the backing spring and the valve stopper are discharge valves on the valve plate so that rotation of the valve plate is suppressed. Rotation inhibiting protrusions that secure each end of the backing spring Characterized in that the ratio.

1 is a side view showing a suction and discharge valve assembly of a conventional hermetic compressor,

Figure 2 is a side cross-sectional view showing a suction and discharge valve assembly of a conventional hermetic compressor,

Figure 3 is an exploded perspective view showing the main part of the suction and discharge valve assembly of a conventional hermetic compressor,

Figure 4 is an exploded perspective view showing the main portion of the suction and discharge valve assembly of the hermetic compressor according to the first embodiment of the present invention,

Figure 5 is an exploded perspective view showing the main portion of the suction and discharge valve assembly of the hermetic compressor according to the second embodiment of the present invention.

<Description of Symbols for Main Parts of Drawings>

110, 210: valve plate 113: rotation inhibiting projection

120, 220: discharge valve 130, 230: backing spring

140, 240: valve stopper 241: rotation inhibiting projection

Hereinafter, with reference to the accompanying drawings, the most preferred embodiment of the present invention will be described in more detail so that those skilled in the art can easily practice.

Figure 4 is an exploded perspective view showing the main portion of the suction and discharge valve assembly of the hermetic compressor according to the first embodiment of the present invention, Figure 5 is a suction and discharge valve assembly of the hermetic compressor according to the second embodiment of the present invention An exploded perspective view showing the main parts.

As shown, the suction and discharge valve assembly of the hermetic compressor according to the present invention is a plurality of iron plate 12, 13 (shown in Figure 1) under the valve cover 11 (shown in Figure 1) is sequentially brazed, The valve plates 110 and 210 having the suction and discharge ports 111, 112, 211 and 212 are coupled to the lower side of the iron plate 13 (shown in FIG. 1), and the discharge valves 120 and 220 and the discharge valves 120 and 220 which open and close the discharge ports 111, 112, 211 and 212. Backing springs (130, 230) and the valve stoppers (140, 240) for improving the response characteristics of the discharge valves (120, 220) to elastically limit the opening and closing area of the valve plate (110,210) are sequentially installed on the valve plate (110,210), the discharge valve ( 120,220, one end of each of the backing spring (130,230) and the valve stopper (140,240) is installed on the valve plate (110,210) by the one rivet (R) and the valve plate (110,210) by the rotation inhibiting projections (113,241) On) The rotation of the output valve (120 220), the backing spring (130 230) and a valve stopper (140 240) is inhibited.

The rotation inhibiting protrusions 113 and 241 fix one end of each of the discharge valves 120 and 220, the backing springs 130 and 230, and the valve stoppers 140 and 240 on the valve plates 110 and 210 together with one rivet R.

As shown in FIG. 4, in the first embodiment of the present invention, the rotation inhibiting protrusion 113 protrudes upward on the valve plate 110.

One rivet (R) is cocked by penetrating through the valve plate 110, the through-holes (111, 121, 131, 141) formed in one end of each of the discharge valve 120, the backing spring 130 and the valve stopper 140, the rotation is inhibited The protrusion 113 is coupled through the through holes 121, 131, and 141 formed at one end of each of the discharge valve 120, the backing spring 130, and the valve stopper 140.

Accordingly, the discharge valve 120, the backing spring 130, and the valve stopper 140 on the valve plate 110 are stably rotated by the rotation inhibiting protrusion 113 with only one rivet R. It is fixed.

At this time, the valve stopper 140 is cocked by the rivet R inserted into the through hole 142 formed at the other end and the through hole 115 formed at the valve plate 110 so that both ends are positioned on the valve plate 110. It is fixed.

As shown in FIG. 5, in the second embodiment of the present invention, the rotation inhibiting protrusion 241 protrudes downward from one end of the valve stopper 240.

One rivet (R) is cocked by penetrating through the valve plate 210, the through-holes (211, 221, 231, 241, 241) formed in one end of each of the discharge valve 220, the backing spring 230 and the valve stopper 240, the rotation is inhibited The protrusion 241 passes through the through holes 221 and 231 formed at one end of each of the discharge valve 220 and the backing spring 230 and is inserted into the through hole 213 formed on the valve plate 210.

Accordingly, the discharge valve 220, the backing spring 230, and the valve stopper 240 fixed on the valve plate 210 by only one rivet R by the rotation inhibiting protrusion 241 are prevented from rotating. It is fixed stably.

At this time, the valve stopper 240 is cocked by the rivet R inserted into the through hole 242 formed at the other end and the other through hole 215 formed in the valve plate 210 so that both ends are positioned on the valve plate 210. Is fixed to.

According to a preferred embodiment of the present invention as described above, while reducing the number of times of caulking operation of the discharge valve, the backing spring, and the valve stopper while fixing the discharge valve so as not to rotate to accurately open and close the discharge port of the valve plate By reducing the amount of use, the assembly process is simplified and the manufacturing cost is reduced.

As described above, the suction and discharge valve assembly of the hermetic compressor according to the present invention is designed to caulk the discharge valve, the backing spring, and the valve stopper while the discharge valve is fixed so as not to rotate to accurately open and close the discharge port of the valve plate. By reducing the number of times and the use of rivets, the assembly process is simplified and the manufacturing cost is reduced.

What has been described above is just one embodiment for implementing the intake and discharge valve assembly of the hermetic compressor according to the present invention, the present invention is not limited to the above embodiment, it is claimed in the utility model registration claims below As will be apparent to those skilled in the art to which the present invention pertains without departing from the gist of the present invention, there is a technical spirit of the present invention to the extent that various modifications can be made.

Claims (3)

A plurality of steel plates are sequentially brazed and welded to the lower side of the valve cover, and a valve plate having suction and discharge ports formed thereon is coupled to the lower side of the steel plate, and a discharge valve for opening and closing the discharge port and an opening / closing area of the discharge valve are elastic. In the intake and discharge valve assembly for a hermetic compressor, wherein a backing spring defined by the valve and a valve stopper for improving the response characteristics of the discharge valve are sequentially stacked on the valve plate, The discharge valve, the backing spring and the valve stopper overlap each other so that one end of each is cocked and installed on the valve plate by one rivet, and the discharge valve, the backing spring and the valve stopper are disposed on the valve plate. A suction and discharge valve assembly of a hermetic compressor, characterized in that a rotation inhibiting projection is provided on the valve plate to fix one end of each of the discharge valve, the backing spring and the valve stopper. According to claim 1, wherein the rotation inhibiting projection, The inlet and discharge valve assembly of the hermetic compressor, characterized in that it is formed projecting upward on the valve plate and is coupled through the one end of each of the discharge valve, the backing spring and the valve stopper. According to claim 1, wherein the rotation inhibiting projection, The inlet and outlet valve assembly of the hermetic compressor, characterized in that the one end of the valve stopper protruding downwardly is inserted through the one end of each of the backing spring and the discharge valve is inserted into the valve plate.