Please explain how the incubator works in physics, in detail?

Electromagnets are required.

A box-shaped appliance used to raise or cultivate organisms or a part of a living organism (cells, etc.) at a certain temperature. In the past, some thermostats were used to incubate eggs by heating them with hot water (water temperature type), but most of them were electrically heated, equipped with an electric heater and a temperature regulator, and were a kind of box or cabinet with thermal insulation on the outer wall.

The principle of the incubator is actually relatively simple, and there are three key control parts, 1Temperature probes.

2.It's a refrigeration compressor.

3.Hot air blowers, some are heated with infrared rays, or directly with resistance wires.

The measuring end of the temperature probe stretches out in the air inside the incubator, can not contact with the object or the box, real-time monitoring of the temperature in the box, on the control panel, you can set the constant temperature range of the incubator, that is, set the upper and lower limits of the allowable temperature, when the probe detects that the temperature is lower than the lower limit, turn on the hot air blower heating. Temperatures are starting to rise. When the probe detects that the temperature is higher than the upper limit, the refrigeration compressor is turned on to cool and the temperature drops.

And so on and so forth.

For example, under normal circumstances, the temperature should start heating when it reaches the lower limit, and the heating is slightly later, because after the heating starts, the temperature may drop for a period of time, and the deviation can be set to heat or cool in advance.

The general principle is to connect a thermostat with the heating element in series in the box.

The so-called constant temperature is that the temperature fluctuates within a certain temperature difference, and the smaller the temperature difference, the more refined the constant temperature. There is a temperature sensor probe in the incubator, which senses the temperature in the chamber and becomes an electrical signal transmitted to the thermostat (adjustable temperature and temperature difference), the thermostat controls the relay on and off, and the relay controls the heating tube. Achieve temperature control.

The electric thermostat consists of a refrigeration system, a heating system, a control system, an air circulation system, and a sensor system.

Principle: 1. The most fundamental essence of the compressor in the incubator is refrigeration, when the probe detects that the temperature in the incubator is higher than the upper limit, turn on the refrigeration compressor to refrigerate, and the temperature drops. Under normal circumstances, the temperature of the incubator should start heating when it reaches the lower limit, and the heating is slightly later at this time, because after the heating starts, the temperature may drop for a period of time, and the deviation degree can be set to make the incubator heat or cool in advance.

2. The refrigerant evaporation inside the incubator produces a cooling effect, and the cooling effect is emitted through the evaporator to achieve the refrigeration effect in the incubator.

3. The middle and high-end incubators use turbofan forced air conditioning to disrupt the circulation system, and the air conditioning in the box is evenly spread through the action of the fan, so that any corner of the incubator can reach a constant temperature. Li Yu.

4. The door body of the incubator is equipped with a temperature control and trembling panel, which can adjust the constant temperature according to the items in the box.

Answer: When the temperature is lower than 35, the control circuit is disconnected, the electromagnet loses its magnetism, the armature B moves to the right under the action of the spring, the contact switch C is closed, the working circuit is turned on, and the electric heater is heated by work; When the temperature reaches 35, the control circuit is turned on, the electromagnet is magnetic, the armature B is attracted to the left, the contact switch is disconnected, the working circuit is open, and the electric heater stops working

Outer box material: all of them are processed and formed by high-quality (t=steel plate CNC machine tools, and the surface of the shell is sprayed with plastic, which is more smooth and beautiful.

Inner box material: imported high-grade stainless steel (SUS304) plate.

Insulation material: high-density glass fiber wool.

The circuit system side adopts a door opening to facilitate maintenance and overhaul.

Sealing: Double-layer high-tension sealing strips are used between the door and the box to ensure the sealing of the test area.

Doorknob: Adopt non-reaction doorknob, which is easier to operate.

Casters: The bottom of the machine adopts high-quality fixable PU movable wheels.