Roast cigarette igniter: the principle of silicon nitride igniter
Flue-cured tobacco igniter : the principle of silicon nitride igniter
In fact, the principle of silicon nitride igniter is very similar to the principle of flint in a lighter. Attached to the plug is the knob for the gas range. When we press the knob, the plug hits the raised part of the ignition hammer. When we turn the knob to the left, the plunger of the silicon nitride igniter will move to the left together and hit the raised part of the ignition hammer. As the rotation angle increases, the ignition hammer is separated from the insert, and the piezo element is struck rapidly by the spring.
Flue-cured tobacco igniter : The principle of silicon nitride igniter
Many friends do not know what a piezoelectric element is. Piezoelectric elements are a special kind of ceramic dielectric. Whether the two ends are compressed or stretched at the same time, it will affect its development. Some of the same charges will be generated between the two ends, and various charges will be generated in the middle, which can carry a large amount of charges in an instant. If the ignition hammer hits instantly, a high voltage of 5000V to 10000V will be generated, and the high voltage will be transmitted to the ignition needle through the wire. A silicon nitride igniter discharges in ionized air to ignite the gas.
The ignition temperature of the silicon nitride point nitride firearm is one of the advanced new ignition devices, which is heated and ignited by the heating element. Some products use silicon nitride plus foam composite silicon nitride or buried in hot wire with sintered heating elements, ceramic blocks are used to mount high purity alumina ceramics with very high density and mechanical strength. Products supported by the power supply have a greater influence on the current ignition temperature within a few seconds. Electromagnetic fields such as work and humidity have an impact on the environment, but there is no electromagnetic interference to the external environment. Fire safe and reliable, long service life. It can ignite a variety of flammable gases, liquids, solids and other materials. Household gas stoves are widely used in microwave ovens, ovens, water heaters, dryers, incubators, heaters, gas air conditioners and other equipment.
Flue-cured tobacco igniter : characteristics of silicon nitride igniter
Silicon nitride igniter is an important high-temperature structural ceramic with small thermal expansion coefficient, high hardness, high elastic modulus, good thermal performance, chemical stability and marginality, etc. features. In addition, it also has the advantages of anti-oxidation and corrosion resistance, and has broad application prospects. Pure silicon nitride does not absorb microwave energy at room temperature, is almost microwave transparent, and relies on its own dielectric loss for heating.
A special ceramic heater for silicon nitride was studied, and a new type of silicon nitride ceramic heater was prepared by improving the formula, process selection and sintering process.
1. The silicon nitride igniter has the advantages of small size, light weight and high power density.
2. By improving the molding and sintering process, silicon nitride ceramic heaters with complex shapes such as cylinders that can achieve arbitrary temperature distribution can be prepared. Compared with traditional ceramic heaters, it has higher thermal efficiency and thermal shock resistance, which greatly prolongs the service life of the product.
3. Good heat dissipation performance. The heating efficiency is above 98%, and the high temperature can reach 800-1000 within a few seconds. It can directly heat water, gas, kerosene, metal and other media without noise and pollution.
4. The silicon nitride igniter has high reliability.