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2. Types
A. Reciprocal Movement Type: It compresses by shifting the motor rotation to the reciprocal movement of the piston with the shaft and
the cylinder.
※It is used for home refrigerators.
B. Rotary Type: It inhales and compresses the refrigerants in the air gap between the rotator and the cylinder attached in an eccentric
way to the rotary axis.
C. Centrifugal Type
■ Drier
1. Roles: It absorbs moisture and removes foreign substance from the refrigerant during the circulation of the refrigeration cycle.
2. Structure: A small amount of moisture can cause the small entrance of the capillary tube to get frozen, which makes it impossible for
the refrigerant to circulate. So silica gel or molecular sieve (drying agent) is sealed to absorb the moisture inside it, and a fine net is
installed to remove foreign substance at its both ends.
Refrigerant
Molecular Sieve Metal Filter
※ Effect of Moisture
① Moisture deposition – Clogged by ice
② Responding with coolant
③ Life time shortening of oil
④ Acceleration of oxidation
⑤ Copper coating effect
⑥ Gas decomposition through interaction of composite insulators
※ Foreign Substances’ Effect
① Condensed temperature increases
② Vortex temperature increases
③ Efficiency of refrigeration decreases
④ Its life time shortens due to frictions between oil and foreign
substances inside the compressor.
BRANDSOURCE-SM(EN) 2007.1.23 10:31 AM 페이지19
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