HERMETIC COMPRESSOR AND VAPOR COMPRESSION REFRIGERATION CYCLE DEVICE WITH SAID HERMETIC COMPRESSOR

Title:

HERMETIC COMPRESSOR AND VAPOR COMPRESSION REFRIGERATION CYCLE DEVICE WITH SAID HERMETIC COMPRESSOR

Document Type and Number:

WIPO Patent Application WO/2015/140949

Kind Code:

A1

Abstract:

A hermetic compressor is provided with: a hermetic container for storing a lubricating oil at the bottom thereof; an electric motor having a stator and a rotor; a drive shaft mounted to the rotor; a compression mechanism for compressing a refrigerant by means of the rotation of the drive shaft; a rotary pressure-increasing mechanism provided above the rotor and increasing the pressure of a refrigerant; a circular cylindrical side wall surrounding the rotary pressure-increasing mechanism and partitioning a space above the electric motor into an outer space and an inner space; and a discharge pipe for allowing a refrigerant to flow out of the inner space into a circuit outside the hermetic container. A refrigerant gas discharged from the compression mechanism into the hermetic container moves from a space below the electric motor, through a rotor gas hole in the rotor, to the upper end of the rotor and flows into the rotary pressure-increasing mechanism to be thereby increased in pressure. The refrigerant gas then flows to the inner space to thereby increase pressure within the inner space and is discharged to the outside from the discharge pipe while preventing a refrigerant gas from flowing from the outer space into the inner space.

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Inventors:

YOKOYAMA TETSUHIDE (JP)
NISHIKI TERUHIKO (JP)
MOROE SHOGO (JP)
KATO TARO (JP)
SHINGU KEISUKE (JP)
SEKIYA SHIN (JP)
KODA TOSHIHIDE (JP)

Application Number:

PCT/JP2014/057464

Publication Date:

September 24, 2015

Filing Date:

March 19, 2014

Export Citation:

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Assignee:

MITSUBISHI ELECTRIC CORP (JP)

International Classes:

F04C29/02; F04B39/04

Domestic Patent References:

WO2013157281A1

2013-10-24

Foreign References:

JPS5224805Y2	1977-06-06
JPS5768583A	1982-04-26
JP2010265849A	2010-11-25
JP3925392B2	2007-06-06
JPH0561487U	1993-08-13
JP2009264175A	2009-11-12

Attorney, Agent or Firm:

KISA PATENT & TRADEMARK FIRM (JP)
Patent business corporation きさ patent trademark office (JP)

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