Small Piston Single-Stage Refrigeration Compressor Model and Basic Parameters
Small piston single-stage refrigeration compressor is a refrigeration compressor with relatively low power output, which is suitable for small cold storage, emulsification and refrigeration display cabinets, water chillers and other equipment. According to GB 1087-89, this type of machine has the following characteristics:
1. Compressor structure: Small piston single-stage refrigeration compressor is generally composed of cylinder, cylinder head, crankcase, crankshaft, connecting rod, valve plate, valve guide, piston ring and piston and other components.
2. Cylinder type and number: Small piston single-stage refrigeration compressor is mainly divided into 1.75 in and 2.25 in cylinder type and 2 or 4 cylinders. Depending on the specific type, the number of cylinders also varies.
3. Cylinder temperature: In ordinary working conditions, the temperature of the cylinder of small piston single-stage refrigeration compressor should not be higher than 115 degrees Celsius. For conditions of low superheat and high condensing temperature, the heat dissipation requirements for the cylinder should be correspondingly higher.
4. Inlet and outlet valves: The inlet and outlet valves of small piston single-stage refrigeration compressor are generally equipped with disc type valves and taper plug valves.
5. Ratio of working volume to total volume: Under the conditions of allowable working temperature, the ratio of working volume to total volume of small piston single-stage refrigeration compressor should not be lower than 70%.
6. Ambient temperature: The working temperature of the small piston single-stage refrigeration compressor should not exceed 35 degrees Celsius. The cooling water temperature should not exceed 50 degrees Celsius.
7. Power supply: Small piston single-phase refrigeration compressor is mainly powered by 3-phase AC power, and the power supply voltage should not exceed the rated voltage by 10%.
8. Lubrication: Under ordinary working conditions, the lubricating oil of small piston single-stage refrigeration compressor should be SAE10W oil. In conditions of low temperature and high speed, the viscosity of lubricating oil should be appropriately increased.
9. Motor power: The power of small piston single-stage refrigeration compressor should not exceed the rated power of the machine.
Besides, to ensure the safe operation of small piston single-stage refrigeration compressor and extend its service life, it is necessary to regularly maintain and check the machine, clean and replace the lubricating oil in time, ensure a certain space around the machine to ensure air circulation and heat dissipation, and strengthen the management and use of electricity to reduce resistance Loss and extend service life.
In summary, small piston single-stage refrigeration compressor is suitable for small cold storage, emulsification and refrigeration display cabinets, water chillers and other equipment, however, before using it, attention should be paid to the requirements for its cylinder temperature, inlet and outlet valves, power supply, lubrication and motor power, in addition, maintenance and checking of the machine should be properly carried out to ensure its safe and effective operation.
