Multi-stage rotary-type fluid machine and refrigeration...

Details Multi-stage rotary-type fluid machine and refrigeration... Multi-stage rotary-type fluid machine and refrigeration...

2007-08-06

2011-11-15

Jiang, Chen Wen (Department: 3784)

Refrigeration

Refrigeration producer

Compressor-condenser-evaporator circuit

C418S058000, C418S060000

Reexamination Certificate

active

08056361

ABSTRACT:
A multi-stage rotary-type fluid machine may be configured as what is called a two-stage rotary expander, in which a refrigerant expands in an expansion chamber having a first discharge side space (115b) of a first cylinder (105), a second suction side space (116a) of a second cylinder (106), and a communication hole (104a) for allowing communication between the two spaces (115b,116a). The first cylinder (105) and the second cylinder (106) are partitioned by an intermediate plate (104). The communication hole (104a) is formed so as to penetrate through the intermediate plate (104). The opening shape and location of the communication hole (104a) are set so that direct blow-through of the refrigerant from a suction port (105b) to a discharge port (106b) cannot occur at any rotation angle of a shaft (103).

REFERENCES:
patent: 5322424 (1994-06-01), Fujio
patent: 2007/0053782 (2007-03-01), Okamoto et al.
patent: 1 739 369 (2007-01-01), None
patent: 2005-106046 (2005-04-01), None
patent: 2005-265278 (2005-09-01), None
patent: 2006-118438 (2006-05-01), None

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