JPH06108973A - Compressor - Google Patents

Abstract

PURPOSE:To make the whole compressor compact by providing a cover for covering reinforcing material, and forming a muffler space in the cover to provide a muffler having an inflow hole communicated with a discharge space or a discharge hole. CONSTITUTION:A compressor 10 is provided with housings 1a, 1b for forming a compression chamber inside, a reinforcing rib 5 for reinforcing the axial side face of the compression chamber, a discharge hole for communicating the compression chamber with a discharge space 13 where a compressed medium is discharged, and a muffler 1 disposed near the discharge hole so as to reduce the discharge pressure pulsation of the discharged medium. A cover for specially covering reinforcing material is provided, and a muffler space 2 is formed in the cover to provide the muffler 1 having an inflow hole 4 communicated with the discharge space 13 or the discharge hole. The reinforcing material therefore serves as the muffler 1, so that the muffler 1 does not protrude onto the radial side face of a shaft in the housing of the compressor 10. The whole compressor 10 is thereby made compact.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a compressor, and more particularly to a muffler for reducing discharge pressure pulsation of a medium compressed by the compressor.

[0002]

2. Description of the Related Art Conventionally, a compressor of this type has been used as a conventional compressor.
The one disclosed in the publication 0-152077 is known.
In this, the housing forming the axial side surface of the compressor is a reinforcing material that also serves as a discharge space, and the muffler projects to the radial side surface of the shaft of the compressor housing.

[0003]

In the above-described conventional compressor, the muffler projects to the radial side surface of the shaft of the housing of the compressor, so that the entire compressor is large.

Therefore, it is a technical subject in the present invention to make the entire compressor compact.

[0005]

[Constitution of the invention]

[0006]

The technical means taken in order to solve the above-mentioned technical problems are a housing for forming a compression chamber therein, and a drive shaft which is arranged in the housing in cooperation with a drive source. A reinforcing rib radially provided around the drive shaft on the axial side surface of the housing to reinforce the axial side surface of the compression chamber, and a discharge hole communicating the compression chamber and the discharge space for discharging the compressed medium. In a compressor equipped with a muffler that is arranged near the discharge hole and reduces the discharge pressure pulsation of the discharged medium, a cover that covers the reinforcing material is provided to form a muffler space in the cover to communicate with the discharge space or the discharge hole. The muffler was provided with an inflow hole.

[0007]

The above technical means operates as follows. By providing a cover for covering the reinforcing material for reinforcing the axial side surface of the compression chamber, the muffler space is formed in the cover, and the muffler having the inflow hole communicating with the discharge space or the discharge hole is provided, thereby providing the reinforcing material. Also serves as a muffler, the muffler does not discharge to the radial side surface of the shaft of the compressor housing, and the entire compressor becomes compact.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a compressor according to the present invention will be described below with reference to the drawings.

FIG. 1 is a view in which the muffler of this embodiment is attached to a revolution rotor type compressor. A compressor 10 is provided on the left side of the muffler 1. The muffler 1 is composed of a first housing 1a on the front side and a second housing 1b on the rear side, and forms an internal space 2 of the muffler. In the first housing 1a, a support hole 3 for supporting an eccentric shaft 11 which is a drive shaft of the compressor 10 (FIG. 1) via a bearing 12, and a discharge space 13 for discharging the medium compressed by the compressor 10. An inflow hole 4 communicating with the muffler space 2 and a reinforcing rib 5 are provided. A partition wall 6 is provided on the second housing 1b and is in contact with the reinforcing rib 5. The partition wall 6 is provided with a communication hole 7 through which the medium can communicate.

FIG. 2 is a sectional view taken along the line AA of FIG. The partition wall 6 provided in the second housing 1b partitions the muffler space 2 into A chamber, B chamber, C chamber, D chamber, E chamber, and F chamber.

Except for the partition wall 6a which divides the A chamber and the F chamber,
A communication hole 7 is formed in each of the other partition walls 6. The partition wall 6a does not have the communication hole 7 in order to direct the flow of the medium in the direction of the arrow in the figure. Further, the F chamber is formed with an outflow hole 8 through which the medium passing through the muffler space 2 flows out into a pipe (not shown).

The medium compressed by the compressor 10 flows into the internal space from the inflow hole 3. Since the partition wall 6a does not have the communication hole 7, the medium is A chamber, B chamber, C chamber, D chamber, E chamber,
Flow in the order of room F. Then, the discharge pressure pulsation is reduced in each chamber by the same action as that of the silencer of the automobile, and the discharge pressure pulsation flows out from the F chamber to the pipe.

In this embodiment, by providing the muffler space around the drive shaft of the compressor, the muffler space can be lengthened, and even a small muffler has the same discharge pressure pulsation of the medium as the muffler is enlarged. A reduction effect can be expected.

[0014]

The effects of the present invention will be described below. A housing that forms a compression chamber inside, a drive shaft that is arranged in the housing in conjunction with a drive source, and a radial direction centered on the drive shaft on the axial side surface of the housing to reinforce the axial side surface of the compression chamber. In a compressor including a reinforcing rib, a discharge hole that communicates the compression chamber with a discharge space for discharging the compressed medium, and a muffler that is disposed near the discharge hole and reduces the discharge pressure pulsation of the discharged medium. A compressor provided with a cover for covering the reinforcing member, forming a muffler space in the cover, and having the muffler having an inflow hole communicating with the discharge space or the discharge hole, the shaft of a compression chamber By providing a cover that covers the reinforcing material that reinforces the side surface in the direction and forming the muffler space in the cover, and having the muffler having the inflow hole communicating with the discharge space or the discharge hole, the reinforcing material also serves as the muffler. Will be, muffler never discharged radially side of the axis of the housing of the compressor, the whole compressor can be made compact.

[Brief description of drawings]

FIG. 1 is a view showing a muffler according to the present invention attached to a revolving rotor compressor.

FIG. 2 shows an arrow view taken along the line AA of FIG.

[Explanation of symbols]

 1 ... Muffler 2 ... Muffler space 3 ... Support hole 4 ... Inflow hole 5 ... Reinforcing rib 6 ... Partition 7 ... Communication hole 10 ... Compressor 13 ... Discharge space

Claims (1)

[Claims] 1. A housing having a compression chamber formed therein,
A drive shaft arranged in the housing in conjunction with a drive source; a reinforcing rib radially provided on the axial side surface of the housing about the drive shaft to reinforce the axial side surface of the compression chamber; A compressor provided with a discharge hole that communicates a compression chamber with a discharge space for discharging a compressed medium, and a muffler that is disposed near the discharge hole and reduces a discharge pressure pulsation of the discharged medium, A compressor provided with a cover for covering the muffler, the muffler space being formed in the cover, and the muffler having an inflow hole communicating with the discharge space or the discharge hole.