Movincool Office Pro 10 Service Manual download pdf (Page 19)

REFRIGERANT SYSTEM

HIGH TEMP. / HIGH PRESS.

LIQUID REFRIGERANT

LOW TEMP. / LOW PRESS.

GAS AND LIQUID MIXTURE

FROM EVAPORATOR

TO COMPRESSOR

Capillary Tube

Accumulator

3. Capillary Tube

The capillary tubes are long thin tubes utilizing

line flow resistance to serve as an expansion

valve. The length and the inner diameter of the

capillary tubes are determined by the capacity of

the refrigeration system, specified operating

conditions, and the amount of refrigerant.

The capillary tubes cause the high pressure, high

temperature liquid refrigerant sent from the

condenser to expand rapidly as the refrigerant is

sprayed out through the fixed orifice in the

capillary tubes. As a result, the temperature and

state of the refrigerant become low and mist-like

respecitively, causing it to evaporate easily.

4. Evaporator

The evaporator, like the condenser, is a heat

exchanger utilizing plate fins. Heat is removed

from the air being pulled across the evaporator

by the centrifugal fan and the resulting cool air is

expelled through the cool air vent.

5. Accumulator

The accumulator is mounted on the suction gas

piping between the evaporator and the compres-

sor. The accumulator separates the liquid refriger-

ant from the gas refrigerant letting only the gas

refrigerant enter the compressor. In the accumu-

lator, suction gas is led into a vessel having a

cylindrical body, and the gas speed is decreased

inside the vessel. This separates the refrigerant

contained in the gas by the force of gravity

causing it to accumulate at the bottom of the

vessel. This protects the compressor from

possible damage caused by the intake of liquid

refrigerant.

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Movincool Office Pro 10 Service Manual Page 19

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