Microwave oven with convection: the pros and cons, the principle of operation, types of

The principle of operation and types of microwaves with convection

Microwave convention - a furnace in which the heat transfer is further transferred to the air stream injected internal fan and the heating element (TEN). This feature extends the capabilities of home appliances - the dishes are heated evenly, but convection drying product, ie, the liquid evaporates faster.

Crust on baked goods and casseroles are soft, well-baked.

Suffice it to fold into a special container products, to include a suitable program and set the cooking time. Heating power, the sequence and combination modes varies even in the cooking process.

Consumers are two types of furnaces:

• Embedded. The model integrates the inside of a kitchen cabinet. This saves space.
• Autonomous (detached). The model is set on the kitchen table and takes a lot of space.

The more features in the microwave, the more expensive the unit. The expensive models of the food is prepared under the conditions of a double boiler, automatic cooking mode storing dishes.

Available in models that combine 6 ways to prepare:

• convection and grill;
• microwave with grill;
• microwave with steam;
• microwave;
• grill.

Control

3 control type microwave oven:
Sensory - film contact pad, the active use of the panel is short-lived, quickly breaks down. Functional models with touch panels richer than other types of microwave ovens.

button - mechanical micro-switches are durable, each button has its own program: the weight of the food choices and cooking time, defrost. oven memory preserves recipe 2-3.

Mechanical - the simple, but reliable method of control - the model with minimal features. In order to run the device, you need to turn the 2 knobs. 1 knob to set the cooking time, and the second - specifies the power.

functions

Microwave oven with convection replaces the oven, if you only have the stove without oven, then this model will become your "magic wand."

2 the basic function of the microwave:

• grill
• microwave

The device is equipped with heating elements of two types: quartz and metal Tenom. A tube heater, inside is twisted into a spiral wire with a high resistance (nichrome) - the heating element. Standard Heaters installed at the top, with convection furnaces installed upstream of the fan. In some models is mobile - this applies to metal, quartz heating spirals are always static.

It is fixed on the working chamber. This grill is easy to use, as it takes up a minimum of space, warming up for 2-3 minutes.

The pros and cons of a convection microwave oven

Advantages:

• The ability to use and combine different modes.
• Quick cooking.
• Save time.
• Saving the maximum amount of nutrients.
• Versatility.
• Automatic control.

Disadvantages:

• The need to purchase special dishes.
• A small amount of cooked food.
• High consumption of electrical energy.

Myths about microwave

Microwaves alter the molecular structure of the products.
Microwave - it's not radiation or ion emitters, so they do not harm the human body. The main function - to heat the dish due to molecular friction.

Food cooked in the microwave, contains many carcinogens.
Carcinogenic substance formed when connecting the heat and oil. This occurs when cooking in a frying pan or in the oven. Cooking in a microwave oven is similar to cooking in a double boiler, so no harm, they will not bring the human body.

Located next to the microwave dangerous.
Microwave oven is equipped with a metal shield frame, even the glass in the door is equipped with a louvre that prevents the spread of microwaves to the outside of the working chamber.

Exploitation

Cook food intended for this dish. It shall be made of heat-resistant glass or plastic.
For even cooking food should be cooked in small portions.

During cooking using the grill, use a special stand. It is a grating on the short legs. Lattice provides access hot air flow around food. Due to this air mass will equally affect the products.

For browned, use a combined mode, which involves alternating convection and grill. This option will allow the preparation to prepare a meal for 15-20 minutes.

Before cooking cakes, preheat the working chamber - only grill prohibited empty warm working chamber of the microwave oven the microwaves.

It can not be put into the microwave: dishes crystal, dishes with gold, dishes with a low heat resistance, simple kitchen utensils made of steel and aluminum.

It is impossible to heat in the microwave vegetable oils and fats, foods like eggs and sealed dishes - inside pressure is created, which will lead to an explosion.

During heating, the food should be open, the air flow or - in a special dish for microwave ovens that openings are provided.

It is forbidden to use metal clamps to fix the plastic bags.

malfunctions

The basic units of microwave ovens require attention:

• Door with a seal;
• Magnetron
• Fan;
• High-voltage capacitors;
• The power supply cord;
• Rectifier;
• High-voltage fuses;
• Transformer

Secondary elements:

• Pallet of the engine;
• Backlight;
• Lamps Grill;
• Blower motor

High voltage fuse blown. With the furnace, remove the protective cover on the back unscrew the screws (screw arrangement depends on the model). The high voltage fuse is a glass cartridge within which the spring and the thin fusible wire. The integrity of the fuse is determined visually. For this disassemble grommet (fuse is enclosed in a plastic housing). If this fails, then disconnect from the circuit sleeve is connected in series with the lamp and battery. If the fuse is OK, the lamp lights up.

Failure of the high-voltage capacitor. Disconnect member of circuit capacitor connect in series with the lamp and turn nakalyvaniya circuit outlet. If the condenser is working properly, the lamp lights at half of its capacity. If the bulb does not light or lights are too bright, the capacitor must be replaced.

Checking and replacing the diode. Diode disconnect the circuit, attach a light bulb. During operation, it flashes. Bright light diode indicates failure. Replacing diode, watch that he stood in the scheme as well as the previous one.

Microwave not included. The reason for failure - fuse (blown mains fuse or thermal cut - is under the insulation for the transformer located on the control board). Replacing the thermal fuse in the home could be hard, but can be bypassed bridge between the two legs tranformatora primary winding (winding on 3 legs) - usually one leg is not connected to scheme. Before replacing the mains fuse check for availability, and then replace, as described above.

Microwave oven with convection - is a household appliance that allows you to quickly and prepare delicious, delicious without effort.