F - Mech Eng,Light,Heat,Weapons – 25 – B
Patent
F - Mech Eng,Light,Heat,Weapons
25
B
62/144
F25B 41/06 (2006.01) F25B 41/04 (2006.01) G05D 7/01 (2006.01)
Patent
CA 2032448
ABSTRACT OF THE DISCLOSURE A flow limiting means in a closed refrigeration system is disclosed and is for maintaining an essentially constant downstream pressure including a housing having an inlet and an outlet and a flow path connecting said inlet and said outlet of said housing. An elongated member is axially located in said flow path and serially having a fixed cross section portion and a variable cross section portion in an axial downstream direction with said variable cross section increasing in going from said inlet to said outlet for at least a portion of the length of said elongated member. Annular means is provided in said housing and having an aperture receiving said fixed and variable cross section portions of said elongated member and coacting therewith to define a flow path. Biasing means act on said annular means to bias said annular means towards said inlet of said housing whereby fluid entering said inlet passes through said flow path defined by said aperture and said elongated member creates a differential pressure across said annular means tending to move said annular means in a downstream direction towards said outlet of said housing to restrict said flow path defined by said annular means and said variable cross section portion of said elongated member in opposition to said biasing means so that an essentially constant pressure is maintained downstream of said annular means when said annular means is coacting with said variable cross section portion.
Backus Robert J.
Chopko Robert A.
Drucker Alan S.
Ripka Chester D.
Backus Robert J.
Carrier Corporation
Chopko Robert A.
Drucker Alan S.
Gowling Lafleur Henderson Llp
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