Multiple cylinder rotary compressor and refrigeration cycle apparatus

Patent metadata

Field	Value
Publication number	US-2016018136-A1
Application number	US-201514866409-A
Country	US
Kind code	A1
Filing date	Sep 25, 2015
Priority date	Mar 26, 2013
Publication date	Jan 21, 2016
Grant date	—

Abstract

The multiple cylinder rotary compressor includes: a compressor body including a hermetic case, the hermetic case housing inside a rotating shaft, an electric motor section, and a compression mechanism body; the compression mechanism body including: at least three compression mechanism sections arranged so as to stack with each other in an axial direction of the rotating shaft, partition plates each of which disposed between the corresponding adjacent compression mechanism sections, and a primary bearing and a secondary bearing supporting the rotating shaft on both end sides of the compression mechanism body along the axial direction of the rotating shaft; and the compression mechanism sections each of which including: a cylinder forming inside a cylinder chamber, an eccentric section provided to the rotating shaft, disposed in the cylinder chamber, a roller fitted to the eccentric section, rotating eccentrically within the cylinder chamber, and a blade dividing the inside of the cylinder chamber into two. At least one partition plate of the partition plates constitutes a partition plate bearing supporting the rotating shaft.

First claim

What is claimed is:

1 . A multiple cylinder rotary compressor comprising:
a compressor body including a hermetic case, the hermetic case housing inside
a rotating shaft rotatable around a shaft center,
an electric motor section connected to one end side of the rotating shaft, and
a compression mechanism body connected to the other end side of the rotating shaft;
the compression mechanism body including
at least three compression mechanism sections arranged so as to stack with each other in an axial direction of the rotating shaft,
partition plates each of which disposed between the corresponding adjacent compression mechanism sections, and
a primary bearing and a secondary bearing supporting the rotating shaft on both end sides of the compression mechanism body along the axial direction of the rotating shaft; and
the compression mechanism sections each of which including
a cylinder forming inside a cylinder chamber,
an eccentric section provided to the rotating shaft, disposed in the cylinder chamber,
a roller fitted to the eccentric section, rotating eccentrically within the cylinder chamber with the rotation of the rotating shaft, and
a blade dividing the inside of the cylinder chamber into two, wherein
at least one partition plate of the partition plates constitutes a partition plate bearing supporting the rotating shaft.

2 . The multiple cylinder rotary compressor according to claim 1 , wherein at least one of the eccentric section is formed by a separate component from the rotating shaft and attached to the rotating shaft.

3 . The multiple cylinder rotary compressor according to claim 1 , wherein a suction passage, where a working fluid supplied to two of the compression mechanism sections positioned on both sides of the partition plate constituting the partition plate bearing flows, is formed in the partition plate constituting the partition plate bearing.

4 . The multiple cylinder rotary compressor according to claim 2 , wherein
the eccentric section formed by a separate component is provided on the opposite side of the electric motor section across the partition plate constituting the partition plate bearing, and external dimension of the portion positioned on the opposite side of the electric motor section across the partition plate constituting the partition plate bearing in the rotating shaft is formed smaller than the sliding diameter dimension of the partition plate bearing.

5 . The multiple cylinder rotary compressor according to claim 1 , wherein each of the cylinders is fixed to a corresponding one of the primary bearing, the secondary bearing, and the partition plate constituting the partition plate bearing positioned in close proximity to the cylinder on a one-to-one basis by a cylinder center and a bearing center being matched.

6 . A refrigeration cycle apparatus comprising:
a multiple cylinder rotary compressor according to claim 1 ; a condenser connected to the multiple cylinder rotary compressor; an expansion device connected to the condenser; and an evaporator connected between the expansion device and the multiple cylinder rotary compressor.

Assignees

• Toshiba Carrier Corp

Inventors

• Hirayama Takuya
• Kawabe Isao

Classifications

• F04C29/0085

  Prime movers · CPC title

• F25B9/00 Primary

  Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point · CPC title

• F04C18/356 Primary

  with vanes reciprocating with respect to the outer member · CPC title

• F25B49/02

  for compression type machines, plants or systems · CPC title

• F04C29/12

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