JP3003823B2 - Rotary compressor - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary compressor (hereinafter referred to as "compressor") used for refrigerators and the like.

[0002]

2. Description of the Related Art In recent years, compressors have been improved in quality and cost, and various improvements have been made. Hereinafter, a conventional compressor will be described.

A conventional compressor is disclosed, for example, in Japanese Patent Laid-Open No. 3-258.
No. 991 is described.

A description will be given with reference to FIGS. Reference numeral 1 denotes a substantially cylindrical hermetic container which is long in the lateral direction and accommodates a motor M including a stator 2 and a rotor 3 and a compression element C driven by the motor M. Reference numeral 4 denotes oil, which accumulates below the closed container 1. Reference numeral 5 denotes a cylinder, 6 denotes a main side housing, and 7 denotes a sub side housing, which are in close contact with both sides of the cylinder 5 to form a compression chamber 8. Reference numeral 9 denotes a shaft connected to the rotor 3 and having an eccentric portion 10. Reference numeral 11 denotes a roller fitted to the eccentric portion 10 and inscribed in the compression chamber 8.

Reference numeral 12 denotes a vane, which presses the roller 11 with a spring 13 to partition the compression chamber 8 into high and low pressures. Reference numeral 14 denotes a discharge valve provided in the sub side housing. Reference numeral 15 denotes a discharge cover having a discharge hole 16 and a curved oil pipe 17 in the center. The discharge cover 15 is lightly press-fitted into the convex portion 7a of the sub-side housing 7 and bolted to the sub-side housing 7. Is fixed. One end of the oil pipe 17 penetrates the oil 4, and a coil spring 19 fixed to the shaft 9 is provided inside.

In the above-described configuration, the rotation of the rotor 3 is transmitted to the shaft 9, and the coil spring 19 fixed to the shaft 9 is rotated by the oil pipe 17 while maintaining its curved shape. Are sequentially supplied to the shaft 9 by the leads of the coil spring 19. The refrigerant compressed in the compression chamber 8 is discharged from the discharge valve 14 provided in the sub side housing 7 into the discharge cover 15 and discharged into the closed container 1 through the discharge hole 16.

[0007]

However, in the above configuration, the auxiliary side housing 7 and the discharge cover 1 are not provided.
The discharge cover 15 is distorted depending on the processing shape variation and fixing method of 5, and a large gap is formed between the sub-side housing 7 and the discharge cover 15, and the refrigerant blows out into the oil 4. Therefore, air bubbles of the refrigerant are generated in the oil 4 and the oil pipe 1
There is a problem that the amount of oil supplied to the shaft 9 by the lead of the coil spring 19 passing through the inside of the coil 7 decreases, thereby causing a decrease in reliability.

The present invention has been made in view of the above problems, and provides a more reliable compressor that suppresses a decrease in oil supply to a shaft.

[0009]

To solve the above-mentioned problems, a rotary compressor according to the present invention comprises a compression element, a motor for driving the compression element, a cylinder constituting the compression element, and a cylinder. A side housing that seals both end surfaces of the side housing to form a compression chamber; and a discharge cover disposed on a side of the side housing opposite to the cylinder surface, wherein the discharge cover is bolted via a reinforcing plate to the side housing. It is fixed to.

The discharge cover is fixed to the side housing with bolts via a reinforcing plate, and the reinforcing plate is fitted to an outer peripheral portion of the side housing.

[0011]

According to the present invention, the distortion of the discharge cover is corrected by the above-described structure, the discharge of the refrigerant from the gap between the discharge cover and the side housing is reduced, the discharge direction is corrected, and the oil supply from the oil pipe is improved. It is to be.

[0012]

An embodiment of the present invention will be described below with reference to the drawings. The same parts as those in the related art will be described using the same reference numerals, and the same parts in the configuration and operation will be omitted.

1 to 6, 5 is a cylinder, 6 is a main side housing, 7 is a sub side housing, 15 is a discharge cover, 20 is a reinforcing plate, 21 is a reinforcing plate with a guide and has a guide 22. The discharge cover 15 is provided with the reinforcing plate 20.
Alternatively, it is fixed to the sub-side housing 7 by bolts via a reinforcing plate 21 with a guide. The reinforcing plate with guide 21 is fitted to the outer peripheral portion of the sub side housing 7.

In the above configuration, the discharge cover 1
5 is fixed to the sub-side housing 7 by bolts via the reinforcing plate 20 or the reinforcing plate 21 with a guide, and is corrected at the same time. The gap between the sub-side housing 7 and the discharge cover is reduced. The blowing of the refrigerant from the gap is reduced. In addition, the guide 2 of the reinforcing plate 21 with a guide
2 corrects the direction of the refrigerant to be blown to the direction of the main side housing 6.

[0015]

As described above, according to the present invention, an oil and a compression element and a motor for driving the compression element are provided in a closed container, and a cylinder constituting the compression element is provided.
Sealing both end surfaces of the cylinder, a side housing forming a compression chamber, and a discharge cover disposed on a side of the side housing opposite to the cylinder surface, the discharge cover includes:
It is fixed to the side housing by a bolt via a reinforcing plate. The discharge cover is fixed to the side housing with bolts via a reinforcing plate, and the reinforcing plate is fitted to an outer peripheral portion of the side housing. Hereinafter, the effects corresponding to the claims are raised.

1) Since the discharge cover is fixed to the side housing by bolts via the reinforcing plate, the distortion of the discharge cover is corrected, and the gap between the side housing and the discharge cover is reduced. The amount of refrigerant to blow out decreases. As a result, bubbles of the refrigerant in the oil are reduced, and the oil supply from the oil supply pipe is performed well, so that a more reliable compressor can be realized.

2) Since the discharge cover is fixed to the side housing via the reinforcing plate and the reinforcing plate is fitted to the outer peripheral portion of the side housing, bubbles in the oil are reduced, and further, the oil supply pipe is connected to the oil supply pipe. Corrects the direction of refrigerant ejection in the opposite direction. As a result, bubbles in the oil around the oil supply pipe are further reduced, and the oil supply from the oil supply pipe is performed more favorably, so that a more reliable compressor can be realized.

[Brief description of the drawings]

FIG. 1 is a sectional view of a main part of a rotary compressor according to an embodiment of the present invention.

FIG. 2 is a front view of a main part of FIG. 1;

FIG. 3 is a side view of FIG. 2;

FIG. 4 is a sectional view of a main part of a rotary compressor according to an embodiment of the present invention.

FIG. 5 is a front view of a main part of FIG. 4;

FIG. 6 is a side view of FIG. 5;

FIG. 7 is a side sectional view of a conventional rotary compressor.

FIG. 8 is a front view of a conventional rotary compressor.

9 is a cross-sectional view of a main part taken along line AA of FIG. 8;

[Explanation of symbols]

 5 Cylinder 6 Main side housing 7 Secondary side housing 15 Discharge cover 18 Bolt 20 Reinforcement plate 21 Guided reinforcement plate 22 Guide

──────────────────────────────────────────────────続 き Continuation of front page (56) References JP-A-2-173386 (JP, A) JP-A-56-2482 (JP, A) JP-A-3-259899 (JP, A) 188884 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) F04C 23/00-29/10 331 F04C 18/356

Claims (2)

(57) [Claims] An oil and a compression element, a motor for driving the compression element, a cylinder constituting the compression element, a side housing sealing both end faces of the cylinder and forming a compression chamber in a closed container; And a discharge cover disposed on the side of the side housing opposite to the cylinder, wherein the discharge cover is fixed to the side housing by bolts via a reinforcing plate. 2. An oil and compression element in a closed container, a motor for driving the compression element, a cylinder constituting the compression element, a side housing sealing both end faces of the cylinder to form a compression chamber, A discharge cover disposed on a side opposite to the cylinder surface of the side housing, wherein the discharge cover is fixed to the side housing by bolts via a reinforcing plate, and the reinforcing plate is provided on an outer peripheral portion of the side housing. A rotary compressor characterized by being fitted to a rotary compressor.