Loading patent…
AssigneeHitachi, Ltd.
InventorsAkira Murayama, Hiroaki Kuno, Naoshi Uchikawa, Takahiro Tamura, Takao Mizuno, Sumihisa Kotani
Estimating the term…
Disclosed is a scroll-type fluid machine which has an orbiting scroll member and a stationary scroll member each having an end plate and a spiral wrap protruding upright therefrom. The scroll members are assembled together such that their wraps mesh with each other to form therebetween closed chambers of volumes which are progressively decreased as the chambers are moved toward the centers of the scroll members as a result of an orbital movement of the orbiting scroll member with respect to the stationary scroll member. The machine is suitable for use as a refrigerant compressor in a refrigeration system. A fluid check valve is disposed in the refrigerant gas suction passage connected to the suction side of the machine, so as to prevent any reversing of the orbiting scroll member. A passage is formed to provide a communication between a suction chamber defined by the scroll members and another closed chamber. A relief valve is disposed in this communication passage so as to relief any abnormal high pressure from the suction chamber.
A scroll-type fluid machine comprising an orbiting scroll member and a stationary scroll member each having an end plate and a spiral wrap protruding upright from the end plate, said scroll members being assembled together such that the spiral wraps mesh with each other to define therebetween closed chambers, volumes of which progressively decrease as the closed chambers are moved toward a center of the scroll members as a result of an orbiting movement of said orbiting scroll member relative to said stationary scroll member thereby continuously drawing and discharging refrigerant gas, a fluid check valve means disposed in a refrigerant suction passage for preventing reversing of said orbiting scroll members;
Dependencies are inferred from the claim text.