Combination liquid trapping suction accumulator and evaporator pressure regulator device including a cartridge type expansion valve

A liquid trapping suction accumulator adapted for insertion in a vapor-compression refrigeration system between the evaporator and compressor comprising:

• A. an accumulator chamber defined by a casing vertically extending and having a top and a bottom;
• B. inlet and outlet ports opening into the top of said chamber and respectively adapted for operative connection to said evaporator and said compressor;
• C. an evaporator pressure regulator chamber interposed between said inlet and outlet ports in communication with said accumulator chamber, said chamber including:
• i. a pressure responsive evaporator pressure regulator device, vertically positioned in said evaporator pressure chamber proximate said outlet port so as to gauge admission of vapor from said accumulator chamber into said evaporator pressure regulator chamber and through said outlet;
• D. an eductor tube vertically extending independently from the bottom of said accumulator chamber into said evaporator pressure regulator chamber;
• E. a cartridge type expansion valve assembly mounted within the bottom of said accumulator chamber said assembly having an entrance port connected to the condenser in said system with said cartridge type expansion valve mounted within and proximate the bottom of said accumulator casing and including an equalizing port for direct communication between said accumulator bottom and said expansion valve;
• a wire mesh strainer located in said entrance port and a desiccant bag supported within said accumulator chamber adjacent said expansion valve.