DISPLACEMENT TYPE EXPANDER

Title:

DISPLACEMENT TYPE EXPANDER

Document Type and Number:

WIPO Patent Application WO/2006/035935

Kind Code:

A1

Abstract:

An expanding mechanism (60) and a contracting mechanism (50) are received in a casing (31). The rear head (62) of the expanding mechanism (60) is provided with a pressure buffer chamber (71). The pressure buffer chamber (71) is partitioned by a piston (77) into an inflow/outflow chamber (72) communicating with an inflow port (34), and a backpressure chamber (73) communicating with the interior of the casing (31). The piston (77) is displaced in response to variations in suction pressure to change the volume of the inflow/outflow chamber (72). Thereby, the inflow/outflow chamber (72) directly effects the supply and suction of a refrigerant with respect to the inflow port (34) which is a source of pressure variations so as to effectively suppress variations in suction pressure.

Inventors:

KUMAKURA EIJI (JP)
OKAMOTO MASAKAZU (JP)
OKAMOTO TETSUYA (JP)
SAKITANI KATSUMI (JP)

Application Number:

PCT/JP2005/018141

Publication Date:

April 06, 2006

Filing Date:

September 30, 2005

Export Citation:

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Assignee:

DAIKIN IND LTD (JP)
KUMAKURA EIJI (JP)
OKAMOTO MASAKAZU (JP)
OKAMOTO TETSUYA (JP)
SAKITANI KATSUMI (JP)

International Classes:

F01C1/356; F01C13/04; F01C21/18

Foreign References:

JP2004190938A	2004-07-08
JPH06307401A	1994-11-01
JPH1054215A	1998-02-24

Other References: