A linear compressor is a gas compressor where the piston moves along a linear track to compress to minimize energy loss during conversion. This technology has been successfully used in space cryocooler where oil can not be tolerated. Kun Liang recently reviewed the linear compressor technologies for refrigeration.
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History
A number of patents for linear compressors powered by free-piston engines were issued in the 20th century, including:
- To Brown, Boveri & Cie, GB191215963, published 1913-10-08
- To Hugo Junkers, CA245708, published 1924-12-30
- To Raúl Pateras Pescara, US1615133, published 1927-01-18
The first market introduction of a linear compressor to compress refrigerant in a refrigerator was in 2001.
Linear Compressor Lg Refrigerator Video
Valved linear compressor
The single piston linear compressor uses dynamic counterbalancing, where an auxiliary movable mass is flexibly attached to a movable piston assembly and to the stationary compressor casing using auxiliary mechanical springs with zero vibration export at minimum electrical power and current consumed by the motor. It is used in cryogenics.
Linear compressors are used in LG and Kenmore refrigerators. Compressors of this type have less noise, and are more energy efficient than conventional refrigerator compressors.
Source of the article : Wikipedia
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