JPH01106982A - Valve device for enclosed compressor - Google Patents

Abstract

PURPOSE:To reduce noises caused by abnormal vibrations of a check valve, by providing a guide bent to the valve holder side along refrigerant flow passing through a discharge port in a portion of an end of the check valve. CONSTITUTION:On a first end plate 13 are disposed a discharge port 4 and a valve device 16 opposed to the discharge port and constituted of a check valve 15 and a valve holder 7. In a portion of an end of the check valve 15 is constituted a guide 15a bent along refrigerant flow. A crank-shaft 9 driven by a motor section 2 rotates a roller 11 in a compressor section 3 to compress refrigerant gas in a cylinder 12a. The refrigerant gas flowing in the vicinity of end of the check valve 15 flows along the guide 15a, so that the generation of a swirl can be strained to reduce noises due to abnormal vibrations of check valve 15.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a valve device for reducing noise generated in a closed container of a hermetic compressor.

BACKGROUND OF THE INVENTION In recent years, it has become a problem to provide a second valve device for a hermetic compressor in a good manner and at a low cost to suppress noise.

A conventional valve device will be described below with reference to FIGS. 4 to 5 of the drawings.

A closed container 1 includes an electric motor section 2 and a compressor section 3 driven by the electric motor section 2, and the compressor section 3 has a discharge hole 4 for discharging internally compressed refrigerant and a valve device 5. is provided. The valve device 5 includes a flat check valve 6 that freely opens and closes the discharge hole 4, and a valve holder 7 for regulating the opening height of the check valve 6.

Regarding the operation of the hermetic compressor configured as above,
This will be explained below.

The refrigerant compressed inside the compressor section 3 driven by the electric motor section 2 pushes up the check valve 6 from the discharge hole 4 and is discharged into the closed container 1 (for example, according to Japanese Patent Laid-Open No. 58-211076).
Publication No.).

Problems to be Solved by the Invention However, in the valve device 5 as described above, when the refrigerant pushes up the check valve 6 and passes through the discharge hole 3 vane 4 from inside the compressor section 3 and is discharged into the closed container 1. , check valve 6
A thin layer of refrigerant is generated near the end 6a.

This thickness has a negative effect on the opening and closing movement of the check valve 6,
This will hinder the smooth movement of the reverse valve 6. Therefore, there was a problem in that the check valve 6 caused abnormal vibrations, and the vibrations generated large noises.

SUMMARY OF THE INVENTION In view of the above problems, it is an object of the present invention to provide a valve device for a hermetic compressor that can inexpensively reduce noise generated during opening and closing movements of a check valve.

Means for Solving the Problems In order to solve the above problems, the valve device for a hermetic compressor of the present invention bends a part of the end of the check valve along the flow of refrigerant and provides a guide part. It is something that

Effect: With the above-described configuration, the present invention suppresses the occurrence of flow along the guide portion of the check valve when the refrigerant discharged from the discharge hole during compressor operation flows near the pushed-up end of the check valve. Therefore, noise caused by abnormal vibration of the check valve can be reduced.

EXAMPLE Hereinafter, a valve device for a hermetic compressor which is an example of the present invention will be described.

1 to 3 each show an embodiment of the present invention,
Components having the same functions as those in FIGS. 4 to 5 are given the same reference numerals.

Reference numeral 8 indicates a stake that is press-fitted into the inner wall of the closed container 1. This stake and the rotor 10 that is press-fitted into the crankshaft 9 constitute the electric motor section 2. The compressor section 3 has a roller 11 driven by the crankshaft 9. , a sill frame 1 having a cylindrical sill 12a that accommodates this roller 11.
2, and a first end plate 13 and a second end plate 14 that hold both end surfaces of this shilling frame 12, seal the roller 11 and shilling j2a, and also serve as bearings, and are held in the airtight container 1 by the shilling frame 12. There is. The first end plate 13 is provided with a discharge hole 4 and a valve device 16 formed of a check valve 15 and a valve retainer 7 opposite thereto.
A part of the end of the refrigerant 5 is formed into a guide portion 15a bent along the flow of the refrigerant 5.

The operation of the hermetic compressor configured as above will be described below.

The crankshaft 9 driven by the electric motor section 2 rotates the roller 11 within the compressor section 3, and the refrigerant gas is compressed within the sill 12a. The compressed refrigerant gas pushes up the check valve 15 of the valve device 16 through the discharge hole 4 provided in the first end plate 13 and is discharged along the guide portion 15a. At this time, since the refrigerant gas flowing near the end of the check valve 15 flows along the guide portion 15a, generation of thinning is suppressed, and noise caused by abnormal vibration of the check valve 15 can be reduced.

Effects of the Invention As described above, the present invention fixes an electric motor section and a compressor section driven by the electric motor section in a closed container, and has an end plate constituting the compressor section that is compressed in the compressor section. A discharge hole for discharging the refrigerant into the sealed container, a check valve that freely opens and closes the discharge hole, and a valve pusher 6 for regulating the opening height of the check valve are arranged. Furthermore, a part of the end of the check valve is provided with a guide part that is bent toward the valve presser side along the flow of refrigerant that has passed through the discharge hole, thereby efficiently reducing the noise generated by the valve device. It can often be obtained cheaply.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal cross-sectional view of a hermetic compressor showing an embodiment of the present invention, FIG. 2 is a cross-sectional view of a valve device showing an embodiment of the present invention,
Fig. 3 is a perspective view of a reverse valve which is a part of a valve device showing an embodiment of the present invention, Fig. 4 is a longitudinal sectional view of a conventional hermetic compressor, and Fig. 5 is a diagram showing a conventional valve device FIG. 3 is a cross-sectional view showing the flow state of refrigerant gas. 1... Airtight container, 2... Electric motor section, 3
...Compressor section, 4...Discharge hole, 7...
...Valve holder, 13...First end plate, 14...
...24th plate, 15...Check valve, 15a.
...Guidance section, 16. River... Valve device. Name of agent: Benshi Toshi Nakao (1 person) ■Kabe

Claims (1)

[Claims] An electric motor section and a compressor section driven by the electric motor section are fixed in an airtight container, and an end plate constituting the compressor section is configured to discharge refrigerant compressed in the compressor section into the airtight container. A discharge hole, a check valve that freely opens and closes the discharge hole, and a valve holder that regulates the opening height of the check valve are provided, and a part of the end of the check valve has a discharge hole. A valve device for a hermetic compressor that has a guide part bent toward the valve holder side along the flow of refrigerant that has passed through the hole.