Question 2: What is far infrared heating? What are the advantages? Far infrared ray is a kind of invisible light, which is different from ordinary infrared ray (near infrared ray) and has only thermal effect on human body. It efficiently converts the surrounding thermal energy into far infrared radiation through specific infrared materials; Far infrared rays with a specific wavelength range can be absorbed by water molecules and organic molecules in organisms, thus transferring energy to the body and inducing a series of physiological effects beneficial to human health. Using this mechanism, far infrared rays can be widely used in medical care, which is called "far infrared therapy".
Question 3: What is the heating of infrared drying? In recent years, infrared drying and heating methods have been accepted by people with amazing development speed, and have been actually applied to all levels. Infrared drying method mainly has the following advantages:
1. It is penetrating and can be heated both inside and outside.
2. No heat transfer medium is needed, and the thermal efficiency is good.
3. It can be heated locally to save energy.
4. Provide a comfortable working environment.
5. The construction cost and space of the furnace body are saved, and the assembly, installation and maintenance are simple and easy.
6. Clean heating process.
7. The temperature control is easy, the temperature rises quickly, and it is safer.
8. Small thermal inertia, no need for preheating, saving manpower.
Because infrared heating has the above advantages, high efficiency and high uniformity heating can be obtained, thus obtaining high quality products.
Question 4: What is the principle of infrared heating? Whether infrared heating is effective or not mainly depends on the absorption degree of the heated object. The higher the absorption rate, the better the infrared radiation effect. The absorption rate depends on the type of heated material, surface state, wavelength of infrared radiation source, etc. The ratio of radiation energy reflected by a substance to incident energy is called reflectivity. Different materials and different surface conditions have different reflectivity. The ratio of radiant energy transmitted by a substance to incident energy is called transmittance, which varies with the nature and thickness of the substance. The effective penetration range of different materials is also different. In general, the transmittance of opaque materials is regarded as zero. Generally, metal crystals are very dense, and the electromagnetic radiation passing through the surface can be rapidly attenuated in a short distance, so the penetration depth of thermal radiation to metals is in the order of microns. However, the molecular structure of nonmetallic materials is not very dense, and different nonmetallic materials have their own characteristic vibration frequencies at room temperature. Therefore, the incident electromagnetic wave is rarely reflected when it reaches the interface, and it is easy to enter the surface through the interface. Some of them excite vibrations into heat, while others are refracted, scattered and reflected. Because the actual object is not a pure substance with a single structure, some radiation waves that are not absorbed by the surface layer will be absorbed by the vibration of other substances to varying degrees during the deepening process. Only when it passes through the whole thickness can the unabsorbed part of radiant energy be transmitted. Therefore, the penetration depth of nonmetal is higher than that of metal.
Question 5: What are the advantages of far infrared heating? First, my traditional Chinese medicine holds a negative attitude towards the harm of electric blankets to people. He said that as long as the human body has enough water and the temperature of the electric blanket is moderate, the harm can be ignored.
The heating principle of far infrared rays is different from that of ordinary wires. Carbon fiber material replaces the traditional metal heating wire. After high temperature carbonization and surface treatment, it has the properties of oxidation resistance, light weight, low temperature coefficient of resistance and stable electrical properties. Translating into Mandarin is light, a little power-saving and safe. But its health care function, like those things in Yu Pei, should be negligible.
Finally, let's talk about the feelings after personal application. Ordinary electric blankets are bumpy because of metal pipes. People who require very high softness and smoothness of the bed may not be used to it. Far infrared has no electron tube. My body has no feeling of fever.
Question 6: Is there any harm to the far infrared heater?
Solar rays can be roughly divided into visible light and invisible light. Visible light will refract purple, blue, cyan, green, yellow, orange and red light (spectrum) after passing through the prism. Light other than red light, whose wavelength in the spectrum is 0.75 ~ 1000 micron, is called infrared light, also known as infrared light. Infrared ray belongs to the category of electromagnetic wave, which is a kind of electromagnetic wave with strong thermal effect. Infrared has a wide wavelength range. People divide infrared rays with different wavelength ranges into three regions: near infrared, middle infrared and far infrared, and electromagnetic waves with corresponding wavelengths are called near infrared, middle infrared and far infrared. Infrared ray is a kind of light wave whose wavelength is shorter than radio wave and longer than visible light. Infrared rays are invisible to the naked eye, and everything emits infrared rays. The infrared radiation of hot objects is stronger than that of cold objects.
There are countless far-infrared radiation sources in nature: cosmic stars and the sun; The oceans, mountains, rocks, soil, forests, cities, villages and various articles produced by human beings on the earth will emit infrared rays in different degrees in all environments above absolute zero (-273. 15℃). Modern physics calls it thermal rays. According to the law of conservation of energy, energy in the universe can neither occur nor disappear, only the way of energy can be changed. Thermal energy is a kind of cosmic energy, which can be converted by radiation, conduction and convection. In the process of radiation, some heat energy forms infrared rays. Infrared radiation speed is the same as visible light, and it can go straight like light; If a reflector is used, its conduction direction can be changed.
Far-infrared electric heater has no loss because all electric energy is converted into heat energy, and the radiation mode only heats people and objects without consuming air, so it overcomes the internal air pollution caused by convection heating and has no noise. Excellent physical therapy and health care function, harmless to human body.
Question 7: What is far infrared? Is far infrared electric heating harmful to human body? Infrared ray was discovered by the famous scientist Herschel in a scientific experiment. He found that there is a magical light beyond the visible light of the sun, which is invisible to human eyes, but its physical characteristics are very similar to that of visible light, with obvious thermal radiation. Because it lies outside visible light, it is called infrared. The wavelength range of infrared ray is between 0.75 ~1000 mm. Far infrared ray with 6~ 15 micron plays a particularly important role in human health and is called "lifeline" by scientists. The heating principle of Wenjia Meiju invisible electric heater is far infrared radiation. Low humidity infrared radiation dissipates heat, emits 8~ 12up far infrared life rays, promotes blood circulation, regulates blood pressure, improves joint pain, regulates autonomic nerves, reduces fat and strengthens liver function. But also directly converts electric energy into heat energy, and the electrothermal conversion rate is close to 100%. ......
Question 8: What can infrared rays do to heat things? The light with the longest infrared wavelength is also electromagnetic wave. The energy of this electromagnetic wave is not only much larger than that of ordinary radio waves, but also very personal. As soon as the microwave touches the metal, it will reflect, and the metal can't absorb it or conduct it at all. Infrared rays can pass through insulating materials such as glass, ceramics and plastics, but will not consume energy; For foods containing moisture, infrared rays cannot penetrate, but their energy will be absorbed. Infrared radiation can make molecules in food vibrate, thus generating heat.
Question 9: What are the applications of infrared heating? 20-minute infrared heating has gradually eliminated the traditional heating methods (oil heating and wind heating). In order to pursue environmental protection, energy saving and high efficiency, more and more industrial enterprises have upgraded and improved their equipment. Infrared heating is suitable for industries: plastic molding (blister, blow molding, etc. ), coating, curing and drying (baking, baking), food production, paper leather, pharmaceutical and tobacco industries.
According to the absorption ability of the heated object to different electromagnetic waves, choose the appropriate heating method!
Question 10: What is the biggest difference between electromagnetic heating and far infrared heating? It is felt that infrared heating should be a branch of electromagnetic heating.