Title:
ROTARY COMPRESSOR
Document Type and Number:
WIPO Patent Application WO/2014/064919
Kind Code:
A1
Abstract:
A compression element (3) equipped with a shaft (6) for driving a piston (9), and a vane (10) for contacting the outer-peripheral section of the piston (9), and dividing a compression chamber (16) into a high-pressure chamber (16a) and a low-pressure chamber (16b), wherein the inner-peripheral surface of the bearings (14, 15) of the shaft (6) is provided with a substantially spiral-shaped oil groove (23) for discharging air bubbles from a coolant into a sealed container (1), and having one end thereof opening to the bearing-base section (24) which is on the compression-chamber (16) side thereof, and the other end thereof opening to the bearing-end section (25) which is on the sealed-container (1) interior-space side thereof. As a result, the provided rotary compressor ensures reliability when using a coolant containing R32, and is capable of preventing seizure or friction caused by gas accumulation in the bearing-sliding area, by forcibly discharging, into the sealed container (1), air bubbles produced in the sliding space between the shaft (6) and the bearings (14, 15) by the oil in the gap between the shaft (6) and the inner-peripheral sections of the bearings (14, 15), by using the viscous pump activity generated in the substantially spiral-shaped oil groove (23).
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Inventors:
OYAGI SHINGO
YOSHIDA HIROFUMI
NAKAI HIROAKI
SHIOTANI YU
OHNO RYUICHI
KARINO TSUYOSHI
YOSHIDA HIROFUMI
NAKAI HIROAKI
SHIOTANI YU
OHNO RYUICHI
KARINO TSUYOSHI
Application Number:
PCT/JP2013/006229
Publication Date:
May 01, 2014
Filing Date:
October 22, 2013
Export Citation:
Assignee:
PANASONIC CORP (JP)
International Classes:
F04B39/02; F04C18/356; F04C29/00; F04C29/02
Foreign References:
| JPH10115296A | 1998-05-06 | |||
| JP2009167830A | 2009-07-30 | |||
| JP2007315261A | 2007-12-06 | |||
| JPS63248994A | 1988-10-17 | |||
| JP2009108747A | 2009-05-21 | |||
| JP2001295762A | 2001-10-26 |
Other References:
See also references of EP 2913528A4
Attorney, Agent or Firm:
ABE, Shinichi et al. (JP)
Shin-ichi Abe (JP)
Shin-ichi Abe (JP)
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