SU516880A1 - Device for automatic control of the performance of the refrigeration unit - Google Patents

Description

(54) DEVICE FOR AUTOMATIC REGULATION OF REFRIGERATION PRODUCTIVITY

g, macaw lithium bromide from generator 7 are fed successively to condenser 9 and evaporator 2. A strong solution through line 10 through the heat exchanger, ennik by gravity enters the absorber 3. The replenisher is supplied by pump 11. Air and The non-condensable gases from the air compartment of the bodies 12 are removed by a vacuum pump 13.

The chilled process water line 1 has a temperature sensor 14 with contacts 15 and 16 connected to the reversing starting device 17 of the actuator 18. The latter is connected to the regulator 19 installed on line 8.

The sensor 20 of the start of crystallization of the solution is connected to the coil of the electromagnetic relay 21, which has a normally closed contact 22 and is normally open 23, Starting device 17 has coils 24 and 25 and contacts 26 and 27, during wiring of which the opening of the actuator occurs 18. The mechanism 18 consists of an electric motor 28 and limit switches 29 and 30.

The device for automatic control of the performance of the refrigeration unit operates as follows.

During normal operation of the refrigeration unit, the contact of the 2O sensor is open, the electromagnetic relay 21 is de-energized, and through the normally-closed contact 22, the temperature sensor 14 controls the p: botoi trigger 17, actuator 18 and regulating) prruT; i S, through contacts 15 and 16, change the flow of coolant to the generator,

In the case of approaching the beginning of the crystalline.: -; uu) i solution at its concentration,

meii critical, closes the contact of the sensor 20 and turns on the coil of the electromagnetic relay 21. This closes the contact of the relay 22 and opens the contact of the relay 23. Through the contact of the relay 23 it receives power supply 25 of the starting device 17, and the electric motor 28 of the actuator 18 turns on body 19, reducing the flow of coolant to the generator. The regulator 19 is closed until it opens, the contact of the crystallization start sensor 20.

In the extreme open and closed positions of the auxiliary mechanism 18, the shutdown of the motor 28 is closed with the limit switches 29 and 30.

Ф о р .5 у л and

acquisitions

A device for automatically controlling the performance of a refrigeration unit, predominantly bromine lithium, containing a temperature sensor for the start of solid solution crystallization, a control coil of an electromagnetic relay, a normally closed contact of a chlorine, turn on the power grid in series with a temperature sensor of the cooled process water and coils that change the direction of movement of the reversing mechanism, articulated with reguliruid1m valve supply of coolant to the generator installation, exc chayuschees in that, for the purpose iovysheni economy mode start kristal.lizaiii solution, the electromagnetic relay is provided with a further normally open contact included in the coil circuit in series with a reversing mechanism vozde1 stvuyushen reguschruyushego closing valve. , /

75 W

nineteen

jl. t ° C

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Crete

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