What are the types of refrigerator compressors？

Household refrigerators are volumetric, which can be divided into reciprocating and rotating. Reciprocating compressors use a piston, crank, connecting rod mechanism or piston, crank, slide tube mechanism, and rotary type uses a rotating shaft crankshaft mechanism. According to the application range, it can be divided into low back pressure type, middle back pressure type, and high back pressure type. Low back pressure type (evaporation temperature -35--15℃), generally used in household refrigerators, food freezers, etc. Medium back pressure type (evaporation temperature -20-0℃), generally used in cold drink cabinets, milk coolers, etc. High back pressure type (evaporation temperature -5-15℃), generally used in room air conditioners, dehumidifiers, heat pumps, etc.