Rotary compressor

Patent metadata

Field	Value
Publication number	US-12031539-B2
Application number	US-202017792899-A
Country	US
Kind code	B2
Filing date	Sep 30, 2020
Priority date	Jan 30, 2020
Publication date	Jul 9, 2024
Grant date	Jul 9, 2024

Abstract

A rotary compressor includes a compressor housing that is provided with a refrigerant discharge portion and a refrigerant suction portion, and an accumulator that is fixed to the outer peripheral surface of the compressor housing and connected to the suction portion. The accumulator has a cylindrical body portion, which is formed of a resin material, an upper portion, which is formed of a metal material and closes an upper end of the body portion, and a lower portion, which is formed of a metal material and closes a lower end of the body portion, the upper portion is joined to the upper end of the body portion, and the lower portion is joined to the lower end of the body portion.

First claim

The invention claimed is:

1. A rotary compressor comprising:
a compressor housing that is provided with a refrigerant discharge portion and a refrigerant suction portion;
a compression unit that is arranged inside the compressor housing and configured to compress a refrigerant, which is sucked from the suction portion, and discharge the refrigerant from the discharge portion;
a motor that is arranged inside the compressor housing and configured to drive the compression unit; and
an accumulator that is fixed to an outer peripheral surface of the compressor housing and connected to the suction portion, wherein
an accumulator container of the accumulator has a cylindrical body portion, which is formed of a resin material as a single member, an upper portion, which is formed of a metal material and closes an upper end of the cylindrical body portion, and a lower portion, which is formed of a metal material and closes a lower end of the cylindrical body portion, a lower end of the upper portion is joined to the upper end of the cylindrical body portion, and an upper end of the lower portion is joined to the lower end of the cylindrical body portion.

2. The rotary compressor according to claim 1 , wherein, in the cylindrical body portion, an outer peripheral surface of the lower end of the upper portion is joined to an inner peripheral surface of the upper end of the cylindrical body portion, and an outer peripheral surface of the upper end of the lower portion is joined to an inner peripheral surface of the lower end of the cylindrical body portion.

3. The rotary compressor according to claim 1 , wherein the cylindrical body portion has a cylindrical upper body portion, which is formed of a resin material and having an upper end to which the lower end the upper portion is joined, and a cylindrical lower body portion which is formed of a resin material, and having a lower end to which the upper end of the lower portion is joined, and a lower end of the cylindrical upper body portion and an upper end of the cylindrical lower body portion are joined.

4. The rotary compressor according to claim 3 , wherein, in the accumulator container, the upper portion and the cylindrical upper body portion are integrally molded, and the lower portion and the cylindrical lower body portion are integrally molded.

5. The rotary compressor according to claim 1 , wherein the cylindrical body portion has a cylindrical upper body portion, which is formed of a resin material and having an upper end to which the lower end of the upper portion is joined, a cylindrical lower body portion, which is formed of a resin material and having a lower end to which the upper end of the lower portion is joined, and an intermediate portion, which is formed of a metal material and is joined to an inner peripheral surface of a lower end of the cylindrical upper body portion and is jointed to an inner peripheral surface of an upper end of the cylindrical lower body portion.

6. The rotary compressor according to claim 5 , wherein the accumulator has a pipe that is arranged inside the accumulator container, the intermediate portion has a supporting portion, which supports the pipe, and a flange portion, which is formed on an outer periphery of the supporting portion, and the flange portion is joined to the inner peripheral surface of the cylindrical upper body portion and the inner peripheral surface of the cylindrical lower body portion.

7. The rotary compressor according to claim 5 , wherein, in the accumulator container, the intermediate portion is integrally molded with either the cylindrical upper body portion or the cylindrical lower body portion.

8. The rotary compressor according to claim 1 , wherein the resin material is a thermoplastic resin material and has a functional group, which is reactive with the metal material.

Assignees

• Fujitsu General Ltd

Inventors

• Akimoto Ryo
• Tanaka Junya

Classifications

• F04C18/3564

  the surfaces of the inner and outer member, forming the working space, being surfaces of revolution · CPC title

• F04C2240/804

  Accumulators for refrigerant circuits · CPC title

• F04C23/001

  of similar working principle · CPC title

• F04C29/12

  Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet · CPC title

• F04C29/06

  Silencing (gas-flow silencers or exhaust apparatus for machines or engines in general F01N) · CPC title