JPH10103277A - Rotary compressor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To increase strength of a shell, reduce noise, and correctly position elements in assembling them. SOLUTION: In a rotary compressor in hich motor elements and rotary compressor elements are contained in a cylindrical container 100, a shell 101 to compose a drum part of the cylindrical container 100 is formed by bending a steel plate 200 into a cylindrical form, bending one end part 200a of the steel plate 200 inward, and get butted the other end part 200b of the steel plate 200 against an outer end 201 of the bent one end part 200a to be welded with it.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary compressor used for a refrigerator, an air conditioner and the like, and more particularly to a shell structure.

[0002]

2. Description of the Related Art In general, there is known a rotary compressor in which a motor element and a rotary compressor element are housed in a cylindrical hermetic container. In this type, the cylindrical container is composed of a shell constituting the body, a bottom constituting the bottom, and a base, and a cap constituting the upper part, and each member is joined by, for example, butt welding or the like. ing.

Conventionally, in the structure of a shell constituting a body portion, as shown in FIG. 4, a steel plate 100 is bent into a cylindrical shape, and one end 100a of the steel plate 100 and the other end 100b are joined. Or welding, as shown in FIG.
A method is known in which the other end 100b is superimposed on the inner periphery of one end 100a and the outer end of the one end 100a is welded.

[0004]

However, when welding is performed as in the above-described conventional example, there are problems such as insufficient strength of the shell and accompanying increase in noise due to vibration and the like. is there. In addition, there is a problem that, at the stage of housing the electric motor element and the rotary compressor element in the container, the respective elements cannot be accurately positioned.

Accordingly, an object of the present invention is to solve the above-mentioned problems of the prior art, and to increase the strength of the shell, reduce noise, and achieve accurate positioning when assembling each element. To provide machines.

[0006]

According to a first aspect of the present invention, there is provided a rotary compressor in which a motor element and a rotary compressor element are housed inside a cylindrical container, wherein a body of the cylindrical container is formed. The shell is formed by bending a steel plate into a cylindrical shape, bending one end of the steel plate inward of the shell, and welding the other end of the steel plate to the outer end of the bent one end. It is characterized by being formed by doing.

According to a second aspect of the present invention, in a rotary compressor in which a motor element and a rotary compressor element are housed inside a cylindrical container, a shell constituting a body of the cylindrical container is made of a steel plate. Bending in a cylindrical shape, bending one end of this steel plate substantially inwardly into the shell, and welding the other end of the steel plate to the outer end of the bent one end by abutting the other end. It is characterized by being formed.

[0008] The invention according to claim 3 is the invention according to claim 1 or 2.
Wherein the motor element and the rotary compressor element are aligned within the cylindrical container by engaging the inner end of one of the inwardly bent ends of the shell. It is assumed that. According to these inventions, the shell is bent by bending one end of the steel plate inward and welding the other end of the steel plate to the outer end of the bent one end by abutting the other end. Since the shell is formed, the strength of the shell increases, and with this strength increase, the vibration of the compressor decreases, so that the noise caused by this vibration decreases,
Furthermore, by utilizing the inner end of the shell for alignment, accurate alignment between the motor element and the rotary compressor element is possible.

[0009]

FIG. 1 is a block diagram showing an embodiment of the present invention.
This will be described with reference to FIGS. In FIG. 1, reference numeral 100 denotes a cylindrical closed container. This cylindrical container 100
Is composed of a shell 101 forming a body, a bottom 102 and a base 103 forming a bottom, and a cap 104 forming an upper part.

A motor element 6 having a drive shaft 3, a rotor 4 and a stator 5, an eccentric portion 7 integrally connected to the drive shaft 3, and a cylinder chamber 8 are provided inside the cylindrical closed container 100.
And a roller 10 eccentrically rotating along the inner wall of the cylinder chamber 8 is fitted to the eccentric portion 7 of the rotary compressor element 9. The cylinder chamber 8 communicates with a refrigerant gas suction pipe 12 connected to the accumulator 11, and the cap 104 is provided with a refrigerant gas discharge pipe 13.

According to this, the rotation of the eccentric part 7 accompanying the driving of the electric motor element 6 causes the refrigerant to flow into the accumulator 11.
The refrigerant gas is sucked into the cylinder chamber 8, is compressed and discharged in the cylinder chamber 8, and the discharged refrigerant gas is discharged to the outside from the refrigerant gas discharge pipe 13 after passing through the inside of the electric motor element 6. . In the above configuration, the shell 101 constituting the body of the cylindrical container 100 is shown in FIGS.
As shown in FIG. 3, the steel plate 200 is bent into a cylindrical shape, and one end 200a of the steel plate 200 is bent inward of the shell 101, and the steel plate 200 is bent to the outer end 201 of the bent one end 200a. Is formed by abutting the other end portion 200b of the first portion and welding the butted portion.

As shown in FIG. 2, an inner end 203 of one of the bent ends 200a extends substantially at a right angle toward the center of the shell 101. As shown in FIG. It is not formed in the entire longitudinal direction of the shell 101,
A gap S for fitting the bottom 102 or the cap 104 is formed above and below in the longitudinal direction. As shown in FIGS. 1 and 3, a bottom 102 and a base 103 are welded by butt to the bottom of the shell 101 to form a bottomed container. The rotary compressor element 9 and the electric motor element 6 are stored in this bottomed container in order.

In this case, as shown in FIGS. 1 and 2, longitudinally extending grooves 9a, 6a are formed in the respective elements 9, 6, and the inner ends of the shell 101 are formed in the grooves 9a, 6a. 203 is fitted and housed. According to this, each element 9, 6 is accurately positioned in the circumferential direction of the above-described bottomed container. With reference to FIG.
5 is opened, and the refrigerant gas suction pipe 12 is
Are connected, for example, the communication path 15 of the rotary compressor element 9 communicating with the refrigerant gas suction pipe 12 and the cylinder chamber 8.
(FIG. 1) means that when the element 9 is assembled, it must be correctly aligned. In such a case, the inner end 203 of the shell 101 and the grooves 9a, 6
Positioning in cooperation with a is effective.

After the components 9 and 6 are stored, a cap 104 is fitted on the upper portion of the shell 101, and these members 101 and 104 are welded. According to this embodiment, one end 200a of the steel plate 200 is connected to the shell 101.
The other end 200b of the steel plate 200 is abutted against the outer end 201 of the bent one end 200a, and the abutted portion is welded to form the shell 10.
Since (1) is formed, (1) the strength of the shell 101 is increased, and (2) the vibration of the compressor is reduced with the increased strength of the shell 101, so that the noise caused by this vibration is reduced, and ( 3) In the step of housing the electric motor element 6 and the rotary compressor element 9 in the cylindrical container 100, various effects such as accurate positioning of each element 6, 9 can be obtained. .

[0015]

According to the first aspect of the present invention, the shell constituting the body of the cylindrical container is obtained by bending a steel plate into a cylindrical shape and placing one end of the steel plate inside the shell. It is formed by bending and welding the other end of the steel plate to the outer end of the bent one end, and the other end of the steel plate is welded. Since the vibration of the machine is reduced, the noise caused by this vibration is reduced.

According to the second aspect of the present invention, since one end of the steel plate is bent substantially at right angles to the inside of the shell, the strength of the shell increases, and the strength of the compressor increases with the increase in strength. Since the vibration is reduced, the noise caused by the vibration is reduced. According to the third aspect of the present invention, the electric motor element and the rotary compressor element are engaged with the inner end of one of the inwardly bent ends of the shell, and are positioned in the cylindrical container. Therefore, the positioning can be easily and accurately performed.

[Brief description of the drawings]

FIG. 1 is a vertical sectional front view showing an embodiment of the present invention.

FIG. 2 is a cross-sectional view of the shell of FIG.

FIG. 3 is a perspective view of a shell.

FIG. 4 is a cross-sectional view of a shell showing a conventional example.

FIG. 5 is a cross-sectional view of a shell showing a conventional example.

[Explanation of symbols]

 Reference Signs List 4 rotor 5 stator 6 motor element 9 rotary compressor element 12 refrigerant gas suction pipe 13 refrigerant gas discharge pipe 100 cylindrical container 101 shell 102 bottom 103 base 104 cap 200 steel plate 200a one end 200b the other end 201 outside End 203 inner end

Claims (3)

[Claims] 1. A rotary compressor in which a motor element and a rotary compressor element are housed inside a cylindrical container, wherein a shell constituting a body of the cylindrical container is formed by bending a steel plate into a cylindrical shape. It is formed by bending one end of the steel plate inward of the shell, and welding the other end of the steel plate to the outer end of the bent one end by abutting the other end. Rotary compressor. 2. A rotary compressor in which a motor element and a rotary compressor element are housed inside a cylindrical container, wherein a shell constituting a body of the cylindrical container is formed by bending a steel plate into a cylindrical shape. It is formed by bending one end of a steel plate at an approximately right angle inward of the shell, and welding the other end of the steel plate to the outer end of the bent one end by abutting the other end. A rotary compressor. 3. The motor element and the rotary compressor element are engaged with the inner end of one of the inwardly bent ends of the shell and are aligned within the cylindrical container. The rotary compressor according to claim 1 or 2, wherein: