초록 ▼

A refrigeration system is disclosed which incorporates apparatus for preventing overheating of the compressor by selectively feeding liquid refrigerant from the outlet of the condenser to the compressor. In one embodiment the refrigerant fluid from the compressor is injected into the suction manifol

A refrigeration system is disclosed which incorporates apparatus for preventing overheating of the compressor by selectively feeding liquid refrigerant from the outlet of the condenser to the compressor. In one embodiment the refrigerant fluid from the compressor is injected into the suction manifold of the compressor. In another embodiment this fluid is injected directly into the compression chamber or chambers. Control means are provided which include a temperature sensor located within the compressor discharge chamber and valve means responsive thereto to control the flow of liquid refrigerant to the suction manifold or compression chamber.

대표청구항 ▼

In a refrigeration system including a compressor having a suction manifold and a discharge chamber, a condenser, and an evaporator connected to said compressor in a serial closed loop system, improved means for preventing overheating of said compressor comprising sensor means within said discharge c

In a refrigeration system including a compressor having a suction manifold and a discharge chamber, a condenser, and an evaporator connected to said compressor in a serial closed loop system, improved means for preventing overheating of said compressor comprising sensor means within said discharge chamber of said compressor and in the flowpath of said compressed gas for sensing the temperature of compressed gas therein, a fluid line connected between the outlet of said condenser and said compressor suction manifold and control means operative to selectively control fluid flow from said condenser outlet to said suction manifold in response to said sensed temperature of said compressed gas, wherein said compressor includes a plurality of compression chambers, each of said compression chambers receiving suction gas from said suction manifold and discharging said compressed gas into said discharge chamber via respective discharge ports said sensor means being located within said discharge chamber closest to the discharge port through which said compressed gas having the highest temperature enters said discharge chamber.