Refrigerating and Air Conditioning Condensing Units – Household
A later adaptation of the Sunbeam Electric’s, advanced, integrated, open system refrigeration technology, demonstrated in #037, this machine illustrates the market that the technology was able to command over half a decade or more later. Originally engineered for SO2 refrigerant, with an advanced evaporator design in formed and rolled stainless steel, this unit was further up-dated by Howard Oliver, probably in the latter 1940’s, converting it to less toxic methyl chloride refrigerant – the Sunbeam Electric Mfd. Co., Evansville Ind., 1945.
A-P automatic expansion valve made in Cooksville Ontario, Model AP207C, a high-tech, miniature valve of the period made for a new generation of chlorinated hydrocarbon refrigerants
Technical Significance:
Stands as a significant marker in the evolution of cabinet refrigeration systems working towards highly integrated specialised systems, which would increasingly be the norm in the latter part of the century. The so called “hermetic” system with electric motor and compressor sealed in a single shell were already being marketed by Kelvinator and Frigidaire
