Refrigerant expansion assembly with pressure relief

Details Refrigerant expansion assembly with pressure relief Refrigerant expansion assembly with pressure relief

2011-03-29

2011-03-29

Norman, Marc E (Department: 3744)

Refrigeration

Automatic control

Refrigeration producer

C062S511000, C236S09200D

Reexamination Certificate

active

07913503

ABSTRACT:
A refrigerant expansion assembly, and method of operation, for use in a vehicle air conditioning system is disclosed. The assembly has a main body including an orifice inlet port, an orifice outlet port, an orifice channel extending between the orifice inlet and outlet ports and including a fixed orifice, an upstream bypass channel extending from the orifice channel between the orifice inlet port and the fixed orifice and including a valve seat, and a downstream bypass channel extending from the orifice channel between the fixed orifice and the orifice outlet port. A bypass valve flange extends from the main body, forming a bypass chamber connected to the upstream bypass channel and the downstream bypass channel, with the ball valve seat adjacent to the bypass chamber. A check ball mounts in the bypass chamber adjacent to the valve seat, and a spring biases the check ball into the valve seat.

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