7 Heating Methods For Electronic Fumigation Technology
December 25, 2023
There are three ways of heat transfer: heat conduction, heat radiation and heat convection. According to the principle of heat transfer, the heating method can be divided into: contact heating and non-contact heating, such as resistance heating, electromagnetic induction heating, microwave heating, far-infrared radiation heating, chemical reaction heating, phase-change heat pipe convection heating, laser heating, radio-wave heating and so on.
1, resistance heating
The Joule effect of the use of electric current will be converted into thermal energy to heat the object. Usually divided into direct resistance heating and indirect resistance heating.
Direct resistance heating: because the heat generated in the heated object itself, belongs to the internal heating, thermal efficiency is very high, such as electronic cigarettes cotton coreThere are three ways of heat transfer: heat conduction, heat radiation and heat convection. According to the principle of heat transfer, the heating method can be divided into: contact heating and non-contact heating, such as resistance heating, electromagnetic induction heating, microwave heating, far-infrared radiation heating, chemical reaction heating, phase-change heat pipe convection heating, laser heating, radio-wave heating and so on.
1, resistance heating
The Joule effect of the use of electric current will be converted into thermal energy to heat the object. Usually divided into direct resistance heating and indirect resistance heating.
Direct resistance heating: because the heat generated in the heated object itself, belongs to the internal heating, thermal efficiency is very high, such as electronic cigarettes cotton core heating wire, cylindrical heating wire and thick film ceramic heating resistor, HNB heating pads and so on.
Indirect resistance heating: need to be made of specialised materials heating element, heat generated by the heating element, through radiation, convection and conduction, etc. to the heated object, such as HNB through the wire heating rod.
2、Electromagnetic induction heating
Direct current through the converter, the formation of AC power supply, the current through the winding in the heating cavity around the eddy current heating element (or buried in the cavity wall), the formation of electromagnetic field in the heating cavity, the electromagnetic field acts on the magnetic induction feeling heater (buried in the HNB bomb) and the formation of eddy currents, and through the loss of eddy currents and hysteresis loss and generate heat.
3、Microwave heating
Microwave has three main characteristics: penetration, reflection and absorption, and polar molecules in the medium material can be heated by microwave. Microwave heating will cause polar molecules spin movement, and then microwave energy into the thermal energy of the material to be heated, resulting in a rapid increase in the temperature of the material, resulting in a series of physical and chemical processes such as thermalisation.
4, laser heating
Laser heating atomisation aspect, the electrical energy into light energy emitted to the collector cone end, so that the gathering point at the smoke liquid atomisation, the production of aerosols, and can be adjusted to adjust the temperature of the heater, to achieve the atomisation rate.
5、Far infrared heating
Radiation belongs to the non-contact heat transfer mode, which is the phenomenon of emitting radiant energy outward due to the thermal movement of microscopic particles inside the object. Carbon fibre is energized to radiate energy outward in the form of thermal radiation, and the radiation rate is high. By controlling the temperature of the carbon fibre heater, the wavelength of radiation is close to the absorption wavelength of the tobacco oil solvent, so as to achieve maximum atomisation. Radiation heating can also be used in the field of HNB.
6、Phase change heat pipe heating
The production method of phase change heat pipe is generally used to vacuum filling or liquid injection and then vacuum method, the use of which occurs at a specific temperature (phase change temperature) under the changes in the physical phase caused by the process of heat absorption and exothermic (liquid - gas - liquid). The use of this principle can be transported heat, the source of heat generation and the final release of the end of the separation, to increase the new tobacco appliances more innovative design possibilities.
7、Chemical reaction heating
Charcoal combustion (for HNB): traditional charcoal heat source fuel low-temperature cigarettes is a mainly convective heat transfer method. This has been improved by transferring the charcoal fuel through a heat transfer structure to the atomisation zone.
The physicochemical reaction is to contact two isolated substances to form a chemical reaction exothermic, using the released heat to atomise the atomisation chamber.
heating wire, cylindrical heating wire and thick film ceramic heating resistor, HNB heating pads and so on.
Indirect resistance heating: need to be made of specialised materials heating element, heat generated by the heating element, through radiation, convection and conduction, etc. to the heated object, such as HNB through the wire heating rod.
2、Electromagnetic induction heating
Direct current through the converter, the formation of AC power supply, the current through the winding in the heating cavity around the eddy current heating element (or buried in the cavity wall), the formation of electromagnetic field in the heating cavity, the electromagnetic field acts on the magnetic induction feeling heater (buried in the HNB bomb) and the formation of eddy currents, and through the loss of eddy currents and hysteresis loss and generate heat.
3、Microwave heating
Microwave has three main characteristics: penetration, reflection and absorption, and polar molecules in the medium material can be heated by microwave. Microwave heating will cause polar molecules spin movement, and then microwave energy into the thermal energy of the material to be heated, resulting in a rapid increase in the temperature of the material, resulting in a series of physical and chemical processes such as thermalisation.
4, laser heating
Laser heating atomisation aspect, the electrical energy into light energy emitted to the collector cone end, so that the gathering point at the smoke liquid atomisation, the production of aerosols, and can be adjusted to adjust the temperature of the heater, to achieve the atomisation rate.
5、Far infrared heating
Radiation belongs to the non-contact heat transfer mode, which is the phenomenon of emitting radiant energy outward due to the thermal movement of microscopic particles inside the object. Carbon fibre is energized to radiate energy outward in the form of thermal radiation, and the radiation rate is high. By controlling the temperature of the carbon fibre heater, the wavelength of radiation is close to the absorption wavelength of the tobacco oil solvent, so as to achieve maximum atomisation. Radiation heating can also be used in the field of HNB.
6、Phase change heat pipe heating
The production method of phase change heat pipe is generally used to vacuum filling or liquid injection and then vacuum method, the use of which occurs at a specific temperature (phase change temperature) under the changes in the physical phase caused by the process of heat absorption and exothermic (liquid - gas - liquid). The use of this principle can be transported heat, the source of heat generation and the final release of the end of the separation, to increase the new tobacco appliances more innovative design possibilities.
7、Chemical reaction heating
Charcoal combustion (for HNB): traditional charcoal heat source fuel low-temperature cigarettes is a mainly convective heat transfer method. This has been improved by transferring the charcoal fuel through a heat transfer structure to the atomisation zone.
The physicochemical reaction is to contact two isolated substances to form a chemical reaction exothermic, using the released heat to atomise the atomisation chamber.
Shenzhen Niimoo Innovative Technology Co., Ltd