The reason why the electric oven can play the effect of baking food is because of the role of the heating tube, which looks inconspicuous and not only has a small size. And before not heating, you can not see the difference between it and other ordinary tubes, but experienced friends can know whether the electric oven can play an excellent effect and role, and the existence of the heating tube is inseparable, the electric oven heating tube on the market can be classified according to the material or size of a variety of categories, interested friends can refer to the following for the choice of electric oven, in the replacement can also use them to understand.
First, which kind of electric oven heating tube is good
Electric oven heating tube material is more common in the market are quartz tube, metal tube, it is recommended to consider metal heating tube when purchasing. The price of quartz tubes is relatively low, but it is easy to break after heating, and it is always used by low-end price products. The metal heating tube is relatively durable, but it is mostly a U-shaped design, so the uniformity of food heating is relatively poor.
Second, how to replace the electric oven heating tube
The metal tubular electric heating element places the spiral electric alloy wire into the metal tube (carbon steel tube, copper tube, aluminum tube, stainless steel tube and titanium steel tube), fills the powder machine with high temperature resistance, insulation and thermal conductivity magnesium oxide powder, and then "shrinks" on the tube shrinking machine (the aluminum tube is compressed in the hydraulic press). This type of electric heating element or electric heater composed of it is currently the most widely used. Typical application examples are electric water heaters, electric ovens, etc.
Third, the electric oven heating tube material
1. Quartz baking tube
Also known as halogen heating tube: tungsten filament is put in the quartz shell, and the filament luminescence spectrum is made in the range of 2400-3500K through the filament design and shell.
Advantages: fast heating up, good thermal stability.
Disadvantages: fragile, not easy to reprocess, temperature control is not accurate enough.
Generally, old-fashioned small ovens are basically used in this kind of baking tube.
2. Metal heating baking tube
Metal heating tube is composed of metal tube, spiral resistance wire and crystalline magnesium oxide powder with good thermal conductivity and good insulation.
At present, the mainstream built-in oven brands generally use metal heating baking tubes, and the best metal heating baking tubes use metal pipes is 304 edible grade stainless steel, which is also used by some brands including Depp built-in ovens.
The choice of material is the main reason for the difference in the quality of heating tubes, including the material of metal tube, the material of resistance wire and the material of insulating filler. In addition to the choice of material, the filling density and uniformity of the insulating filler also determine the quality of the baking tube.
