Patent ID: 6112998
Filing Date: 2000-09-05
Classification: F25B

Abstract:
A thermostatic expansion valve included in a refrigeration cycle for expansion of a refrigerant which is contained in said refrigeration cycle, said thermostatic expansion valve including a refrigerant passage for guiding said refrigerant, a valve mechanism placed in said refrigerant passage for adjusting a flow of said refrigerant in said refrigerant passage, and operation control means for controlling an operation of said valve mechanism in response to temperature of said refrigerant, said refrigerant passage having specific pressure when said refrigeration cycle is operated, said thermostatic expansion valve further comprising:a particular chamber substantially separated from said refrigerant passage;an additional passage connected between said particular chamber and said refrigerant passage for introducing said specific pressure into said particular chamber to make said particular chamber have particular pressure relating to said specific pressure; anda pressure transmission member coupled to said particular chamber and said valve mechanism for transmitting said particular pressure to said valve mechanism to reduce influence of said specific pressure to the operation of said valve mechanism.