초록 ▼

An expansion device for refrigeration systems replaces capillary tubes and automatic expansion valves. A housing is provided having an inlet tube for connection to the liquid line from the condenser and an outlet tube for connection to the evaporator. The outlet tube has a valve like seat in its inn

An expansion device for refrigeration systems replaces capillary tubes and automatic expansion valves. A housing is provided having an inlet tube for connection to the liquid line from the condenser and an outlet tube for connection to the evaporator. The outlet tube has a valve like seat in its inner end and orifice grooves formed in the seat. A steel ball is movably disposed in the housing such that liquid refrigerant during compressor operation forces the ball into the seat thereby forming an expansion orifice between the ball and the seat.

대표청구항 ▼

In a refrigeration system having a compressor, a condenser, an evaporator, and a liquid line for receiving liquid refrigerant from said condenser, an expansion device for connecting said liquid line to said evaporator comprising: a housing having an inlet connected to said liquid line and an outlet

In a refrigeration system having a compressor, a condenser, an evaporator, and a liquid line for receiving liquid refrigerant from said condenser, an expansion device for connecting said liquid line to said evaporator comprising: a housing having an inlet connected to said liquid line and an outlet connected to said evaporator, said outlet having a valve type seat formed therein and at least one orifice groove formed across said seat; and an orifice forming element movably disposed within said housing for seating in said seat under pressure of liquid refrigerant when said compressor is operating thereby forming an expansion orifice in concert with said orifice groove, and for unseating from said seat when said compressor is not operating thereby equalizing pressure in said refrigeration system.