Views: 37 Author: Site Editor Publish Time: 2023-11-16 Origin: Site
As the power of microwave oven increases, the heating temperature is even higher. Customers have higher requirements for the heating speed and high temperature resistance of the heating tube. Traditional heaters represented by metal alloy wires are widely used in the oven industry. Although the production co
st of this material is controllable and easy to obtain, it has a long reaction time and slow temperature rise.
The high thermal conductivity graphite sheet produced by Dasen can effectively solve this problem. Based on the excellent thermal conductivity and fast electrical response of graphite, oven manufacturers are gradually applying graphite to heat pipes.
The graphite heating tube breaks through two major technological bottlenecks, and there is no need to worry about the slow heating of the oven heating tube.
Compared with traditional quartz baking tubes, graphite baking tubes are lighter, have less thermal inertia, and heat faster. The preheating time is only 0.2 seconds, and their reaction speed is comprehensively increased by 115 times. The meticulously improved baking tube structure achieves "strong penetration" of heat conduction, increasing the penetration rate by 36%. While considering heating uniformity, the temperature of the heating body can reach 1300 ℃, bringing stronger thermal radiation and shortwave penetration efficiency, so that the food can be heated up quickly. Through technical processing, the power of graphite baking tubes is distributed at both ends of the heating body, improving the power density per unit length. Compared with ordinary heating tubes, graphite sheets, known as "black gold", have strong thermal conductivity. When applied to an oven, its heating speed is 115 times that of a regular quartz tube oven. It does not require preheating and can be directly baked.
From the following data, we can see the temperature of the graphite heating tube can rise to 557.9 °C within 3-10S .
Test data (ambient temperature 24.6, humidity 60%)
No. | Voltage (V) | Current (A) | Resistance value (Ω) | Power (W) | Temperature (℃) | Remark |
1 | 0 | 0 | 3.00 | 0.0 | 24.6 | Cold resistance |
1 | 44.1 | 2.34 | 18.85 | 100.0 | 207.7 | |
2 | 65.8 | 3.05 | 21.57 | 200.0 | 276.1 | Reaching the set temperature within 3-10S |
3 | 84.1 | 3.58 | 23.49 | 300.0 | 317.8 | |
4 | 100.2 | 3.99 | 25.11 | 400.0 | 351.6 | |
5 | 115.3 | 4.35 | 26.51 | 500.0 | 389.9 | |
6 | 129.7 | 4.67 | 27.77 | 600.0 | 417.9 | |
7 | 142.7 | 4.95 | 28.83 | 700.0 | 439.9 | |
8 | 154.6 | 5.19 | 29.79 | 800.0 | 471.0 | |
9 | 165.6 | 5.41 | 30.61 | 900.0 | 497.9 | |
10 | 178.1 | 5.65 | 31.52 | 1000.0 | 510.8 | |
11 | 189.9 | 5.87 | 32.35 | 1100.0 | 528.3 | |
12 | 200.6 | 6.07 | 33.05 | 1200.0 | 557.9 |
It can be seen that graphite has excellent thermal conductivity and fast response to electricity.
Characteristics of graphite heating tubes:
(1) Stable electrical performance
After being electrified, the graphite heating tube will radiate infrared energy that can heat the material.
(2) High thermal efficiency, saving more than 30% energy compared to ordinary metal heat exchangers, and extremely fast heating speed. Graphite has the characteristics of fast heating up, small thermal hysteresis, uniform heating, long thermal radiation transfer distance, and fast heat exchange rate.
(3) Far infrared and practicality are integrated: The energy emission method of graphite heating tubes is mainly based on far infrared radiation, with the far infrared radiation efficiency reaching over 80%, which is currently beyond the reach of other far infrared heating tubes.
(4) Long service life
Graphite heating tube, its life between 8000 - 10000 hours, in the frequent startup, shutdown and long-term continuous work, the heating body without oxidation and breakdown phenomenon, heating light color uniformity, tube wall inside and outside clean.
(5) Product characteristics
Unlike metal heating elements, graphite has its own characteristics and completely avoids the generation of electromagnetic fields. Widely used and highly applicable.
Please feel free to contact us if you need heat dissipation materials or heat dissipation solutions.
