초록 ▼

A pressure regulating valve for use in the oil separation and delivery system of a refrigeration system, including a valve body having an oil inlet chamber for connection with a separated liquid source on the high pressure side of refrigeration system compressor means, an oil outlet adapted for low

A pressure regulating valve for use in the oil separation and delivery system of a refrigeration system, including a valve body having an oil inlet chamber for connection with a separated liquid source on the high pressure side of refrigeration system compressor means, an oil outlet adapted for low pressure connection with oil level controls for the compressor means, internal valve means for controlling oil flow between the high side and low side chambers, and movable pressure means responsive to oil outlet pressure and compressor suction pressure acting in opposition for regulating said internal valve means.

대표청구항 ▼

In an oil separation system for a refrigeration system having compressor means with a high pressure discharge side and a low pressure suction side, and which system includes oil reservoir means forming a high pressure source of liquid oil, and oil delivery means having oil level control means compri

In an oil separation system for a refrigeration system having compressor means with a high pressure discharge side and a low pressure suction side, and which system includes oil reservoir means forming a high pressure source of liquid oil, and oil delivery means having oil level control means comprising an oil float valve sensing the oil level in said compressor means and adapted to feed oil upon demand to maintain a predetermined oil level for said compressor means; the improvement comprising pressure differential valve means adapted to be disposed in an oil return line between said oil reservoir means and said oil float valve, said pressure differential valve including pressure regulating means constructed and arranged to produce a substantial drop in oil pressure thereacross from the high side oil pressures prevailing in said reservoir means to a preselected low side pressure differential relative to the suction pressure of said compressor means.