COMPRESSOR - MITSUBISHI HEAVY IND THERMAL SYSTEMS LTD

Title:

COMPRESSOR

Document Type and Number:

WIPO Patent Application WO/2018/037906

Kind Code:

A1

Abstract:

Provided is a compressor in which an appropriate pulsation frequency component of a fluid can be sufficiently reduced by a muffler while the performance of the compressor is ensured. A compressor 1 is provided with a compression mechanism 4 that compresses a refrigerant, and a muffler 10 that reduces pulsation of the refrigerant compressed by the compression mechanism 4. The muffler 10 is provided with: a muffler body 11 that takes refrigerant into the interior thereof from the compression mechanism; and a cover 12 that forms a cavity 120 with an outer periphery 11S of the muffler body 11, the cover 12 discharging the refrigerant taken in from the interior of the muffler body 11. A plurality of openings 11H passing through in the plate thickness direction are formed in the muffler body 11, separately from a discharge port 11P through which refrigerant passes into the cavity 120 from the interior of the muffler body 11. Due to the relationship between the speed of sound C, the cross-sectional area S of each of the openings 11H, the plate thickness L, and the volume V of the cavity 120, Helmholtz resonance arises in air masses 15 located inside the openings 11H leading into the cavity 120, whereby sound is absorbed.

Inventors:

TAKAHASHI SHINICHI (JP)
ESAKI IKUO (JP)

Application Number:

PCT/JP2017/028710

Publication Date:

March 01, 2018

Filing Date:

August 08, 2017

Export Citation:

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Assignee:

MITSUBISHI HEAVY IND THERMAL SYSTEMS LTD (JP)

International Classes:

F04B39/00; F04C29/06; F04C23/00

Domestic Patent References:

WO2013168194A1

2013-11-14

Foreign References:

JPH04159490A	1992-06-02
JPH11210660A	1999-08-03
JP2005195013A	2005-07-21
JPH08151918A	1996-06-11

Other References: