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TEMPERATURE CONTROL (THERMOSTAT) REFRIGERATOR

Understanding The Thermostat Refrigerator, Freezer, Thermostat Function Temperature Control, Showcase, The Workings Of The Thermostat, Determine The Cut In Out Thermostat, Cut On Off, Temperature Detection, Mechanical Thermostat, Thermostat Is, How It Works,

The thermostat control is a component that is used to control the electrical equipment is also called: the temperature control, Cooling control, Cool control, Refrigerator control, control unit, Control of therm.

The thermostat is used to:
1. Set the limits of the temperature in the refrigerator;

2. Stop and run the compressor again automatically;
3. Set the length of the compressor stops.




The temperature regulator is planned so that within 24 hours, the compressor works only for 10-14 hours or 50%. In normal usage the compressor works for 10 – 15 minutes and stops for 10 – 20 minutes. The compressor will work longed, at the time the load the fridge door of the time often is opened or the air space is very hot. 

If load decreases, the fridge compressor working. On the fridge models frost-free or who wear defrosts automatically, the compressor will work longer than the regular model refrigerator. Melt the ice at the time being, the burden of the fridge evaporator becomes large.

At the end of the capillary pipe temperature regulator typically consists of a bulb (power element) or the tip of the capillary pipe diameter so that they become great. Capillary pipe length between 12 – 48 inches (30 – 120 cm). The other end of the pipes connected with a membrane (diaphragm) or bellows which can shrink or expand in liquid and gas in bulb pressure decreases or increases.

When the temperature in the refrigerator becomes very low, then the liquid and gas pipe inside the capillary and bulb will shrink and the pressure is decreased. Pressure on the membrane or bellows are also down. Below is shrunk so that electrical contact to do regardless (cut-off). The compressor will stop because it did not receive electricity again. When the temperature inside the refrigerator rises, liquid and gas will inflate and pressure increases, so the membrane or bellows may encourage electrical contact to reconnect (cut-on) and compressors may work again.

Image captions:
1. Button 2. The contact 3. Spring 4. The moving contact 5. Below 6. Capillary pipe 7. Bulb

Temperature regulator's work is influenced by temperature change bulb. The gas expands in proportion to the temperature. These temperature change may cause the liquids and gases inside the pipe and bulb expand or shrinks, so it can cause flying fluid. If there is a change in temperature, the pressure will be increased or decreased in accordance with the temperature change that affect them. Change the pressure inside the bellows' movement turned into a straight rod can hit, so it can open or close the electrical contact, making the compressor stops or work. On top of the bellows are given a spring against the pressure of the bellows. The spring pressure can be adjusted with a button on it.

General bulb attached at the evaporator and pinned with clamps. Bulb is placed on a would part that are not attached to the cooling material, on the would last part of the evaporator before the accumulator. Capillary pipes from the temperature regulator not to touch other parts of the evaporator cooler temperature, can affect the working temperature regulator. Capillary pipe installations, give a dent downs nearing the bellows or membrane to prevent water condensation dripping from the capillary pipes enter into the control temperature, the temperature regulator can be damaging.

On the fridge wearing fan motored inside, the bulb is not directly related to the cold evaporator plate, but placed on the flow of cold air in the storage of food. If the bulb must be directly related to a cold plate of evaporator capillary pipe, which got a cold flow of aired from the evaporator must be wrapped with a good insulating material so as not to be affected by the temperature of the cold air flows.

Determination of the cut-on and cut-off.

If a thermostat has 6 k differential and setting the temperature the thermostat is 3oC, then, it can be determined.



From the above calculation, then the compressor will live at a temperature of 6oC (cut-on) until the temperature reach 0oC (cut-off). At a temperature of 0oC compressor will stop working. Because the compressor is stopped, then the temperature until it rises until it reaches the temperature of 6oC and compressor will work again. The cycle would be repeated constantly.


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