Equalizers

There is always some pressure drop through the evaporator. AIT EQ, you should use if the pressure difference between the inlet and outlet of the evaporator is more than 4 psi (28 kPa). On the surge pipe provides the same pressure in the suction line of the sensing bulb place. This pressure will allow accurate superheat adjustments. Pressure drop in the evaporator, as a rule, increases the effects of overheating and starve the evaporator.

Thermostatic expansion valve can open periodically (opening and closing frequently) during the Off cycle. This can be caused by temperature variations (changes)that occur during the Cabinet of opening and closing. To prevent this high pressure can be used on a valve, causing it to be closed during the off cycle. Solenoid valve can be used to control the pressure.

Special solenoid valve connected to equalizer tube figure 5-42, Attention valve Fig. 5-39.

The circuit for the solenoid valve is opened when the motor-compressor of the circuit is opened. At the opening of the chain, electromagnetic nucleus falls. She closes the equalizer tube suction line. High-pressure refrigerant enters the top of the electromagnetic valve. It passes upward through an equalizer tube. It makes thermostatic diaphragm, closing the valve.

Thermostatic expansion valve, Fig. 5-43, uses unusual settings. Equalizer tube connects the valve connection K.

Fig. 5-44 large capacity with a thermostatic expansion valve. She has a flange connection lines refrigerant bolts, and folding. Instead of a needle and seat, she has a flat disk surface of the valve and seat. Equalizer tube connection is displayed in the right upper part of the body.

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