CN1832638A

CN1832638A - Heating device for providing heat source by microwave heating body

Info

Publication number: CN1832638A
Application number: CN 200510041750
Authority: CN
Inventors: 董俊英
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-03-07
Filing date: 2005-03-07
Publication date: 2006-09-13

Abstract

This invention provides a microwave heater by utilizing the microwave absorption function of the microwave radiation to convert the absorbed microwave energy to heat energy as the heat source of the heater, so that the heat generated by the microwave heater can heat other mediums such as water, oil and air.

Description

A kind of heater that thermal source is provided by microwave heater

Technical field

Present technique relates to uses microwave (300MHz--300GHz) irradiation microwave absorbing material, finishes the process that microwave energy is converted into heat energy, is made into the field of various heaters as thermal source with this.

Background technology

The thermal source of heat medium roughly has following several at present: coal, resistance wire, infrared ray, combustion gas, fuel oil, microwave, electromagnetic induction etc.Heating principle is divided into two kinds, and first kind is to heat the top layer earlier, gos deep into internal layer, resistance wire, combustion gas, electromagnetic induction etc. again and belongs to this kind mode, and second kind is to heat internal layer earlier, is carrying out the transition to the top layer gradually.Microwave heating belongs to the second way.First kind of mode efficiency of heating surface is lower, and coal-fired, fuel Heating mode also exists contaminated environment to produce the problem of pernicious gas in combustion process, and especially pollution that caused by coal burning is even more serious.China large-and-medium size cities have banned use of coal fired boiler now.The electromagnetic induction heating mode belongs to clean energy resource, now be widely used in electromagnetic oven, but because the electromagnetic oven heating rate is lower, be difficult to satisfy Chinese popular life custom, the function of frying in shallow oil, fry, exploding is difficult to realize, microwave heating has efficiency of heating surface height, heating rate height, advantages such as environmentally safe, but because microwave heating is a direct heater, microwave oven is one " hot meal stove " in Chinese family, can not realize the function of steaming, boil, fry, frying in shallow oil to replace traditional combustion gas, fuel kitchen range fully.

Summary of the invention

Purpose of the present invention is exactly to propose a kind ofly to make full use of the fast characteristics of heat efficiency height, programming rate that heating objects with microwaves has, but the microwave current heater can not be realized the indirect deficiency to heated medium.Utilize microwave irradiation to have the absorption microwave function, the microwave energy that absorbs is converted into the microwave heater of heat energy, as the thermal source of heater.The heat that microwave heater is sent directly heats other medium, Ru Shui, oil, air.

With reference to Fig. 1: Fig. 1 is the principle assumption diagram of microwave heater as heater.Heater is by microwave source---and magnetron 4, microwave heater 1, heat-insulation and heat-preservation material 2, microwave guide plate 5, microwave shield 3 constitute.Magnetron 4 is microwave sources.Magnetron 4 can produce the microwave of 300MHz-300GHz by different designs, microwave through guide plate 5 parallel be radiated microwave heater 1 surface, and go deep into heater 1 inside, microwave enters the frequency different to some extent differences of the degree of depth of heater 1 inside because of microwave, when microwave frequency is 2450MHz, enter the degree of depth＜10 centimetre of heater 1.Microwave radiation when inner, causes microwave heater 1 temperature rising because the loss of 1 pair of electric energy of heater or magnetic energy is converted into heat energy to heater 1, finished the process that microwave energy is converted into heat energy.Because microwave is radiated at the inside of heater 1 with high (frequency is 2450MHz) speed, to cause that heater 1 temperature rises rapidly, (the four-needle-like zinc oxide heating rate be the 300-500 degree/minute, the one-dimension zinc oxide heating rate be the 400-900 degree/minute, the temperature of heater at short notice temperature just can to rise to heater temperature required.The temperature raying of heater 1 is to the control of the inner microwave intensity of heater, and this is guaranteed with regard to the randomness that makes heater 1 variations in temperature.Be radiated the inside of heater 1 uniformly for the microwave energy that magnetron 4 is produced, at magnetron 4 microwave emission ports the guide plate 5 that can change the microwave propagation direction is installed, microwave is after guide plate 5 reflections, microwave basically uniformly irradiation to heater 1 inside, thereby guaranteed heater 1 each point temperature basically identical.Space mounting at heater 1 and guide plate 5 has heat-insulation and heat-preservation material 2, and insulation material 2 can prevent the heat that heater 1 is produced, to guide plate or magnetron or the conduction of microwave shield 3 directions.Micro-wave screening 3 can prevent the spatial transmission of microwave beyond microwave shield.

Microwave heater 1 can select four-needle-like zinc oxide, one dimension pillar shaped ZnO, ferrite, carborundum, carbon fiber etc. to have the material that microwave energy is converted into heat energy.Heat-insulation and heat-preservation material 2 can select quartz, mica, asbestos, insulating moulding coating, pottery etc. can see through microwave, can play the material of insulation again.Microwave guide plate 5, microwave shield 3 can select to have metal or other composite material of shield microwaves or microwave reflection, as steel, copper, lead and corresponding alloy thereof or other conductive polymer composite, conductive fabric etc.

The figure number explanation:

1 microwave heater, 2 insulatings, 3 microwave shielding layers, 4 magnetrons

5 guide plates, 6 delivery ports, 7 boilers, 8 water inlets

9 steam vents, 10 frying pans, 11 baking trays

Description of drawings:

Fig. 1 is the principle assumption diagram of microwave heater as heater.

Fig. 2 is the microwave water-heater fundamental diagram.

Fig. 3 is a microwave electric heater fundamental diagram.

Fig. 4 is the microwave wok fundamental diagram.

Fig. 5 is microwave baking oven or drying box fundamental diagram.

Specific implementation method

Embodiment 1.

With reference to Fig. 2.Fig. 2 is the microwave water-heater fundamental diagram.Place a water tank 7 on the top of microwave heater 1, the bottom of the direct heating water tank of heat that produces by microwave heater 1.Thereby realize adding the purpose of hot water.Heating water tank can use metal material to make.

Embodiment 2.

With reference to Fig. 3.Fig. 3 is a microwave warmer fundamental diagram.The microwave warmer is made up of microwave heater 1, insulating 2, microwave shield 3, magnetron 4, guide plate 5.After heater 1 was subjected to microwave irradiation, the temperature of heater 1 rose rapidly, and the heat that heater 1 produces conducts to the space by shield 3.

Embodiment 3.

With reference to Fig. 4.Fig. 4 is that microwave is fried, boiled, steam stove tool fundamental diagram, is made up of microwave heater 1, insulating 2, microwave shield 3, magnetron 4, guide plate 5, frying pan 10.After heater 1 was subjected to microwave irradiation, the temperature of heater 1 rose rapidly, and the heat that heater 1 produces can conduct fast to frying, steam, boil stove and accessory, and the stove and accessory temperature is risen rapidly.By adjusting the microwave intensity that magnetron 4 is radiated heater 1 inside, just can realize controlling indirectly the stove and accessory variation of temperature.

Embodiment 4.

With reference to Fig. 5.Fig. 5 is microwave drying, barbecue box fundamental diagram, mainly is made up of microwave heater 1, insulating 2, microwave shield 3, magnetron 4, guide plate 5, and baking tray 11 is formed.It is parallel placement that 1, two heater of two microwave heaters 1 is arranged in the microwave drying oven, and the space between two heaters 1 is to place the position that needs dried material.If desired, can also add two heaters 1 again, to accelerate the speed that dry interior temperature rises in the side of two heaters 1.

Claims

1. will be the inside of the microwave irradiation of 300MHz-300GHz to microwave heater by the frequency range of magnetron 4 emissions, microwave heater 1 be finished the process that microwave energy is converted to heat energy.The heat that microwave heater 1 is produced is as the thermal source of other media of heating.

2. according to the 1st described heating means of claims, it is characterized in that: microwave heater 1 in the face of a side of magnetron 4, has one deck to have heat insulation, insulation and has the material 2 through microwave function again.This material can be quartz, asbestos, mica, pottery, glass fibre, also can be refractory material such as refractory brick.

3. according to the 1st described heating means of claims, it is characterized in that: at magnetron 4 microwave emission ports microwave guide plate 5 is installed, guide plate 5 has the high molecular polymer of conducting resinl to make by metal or corresponding alloy or brushing.

4. according to the 1st described heating means of claims, it is characterized in that: make a micro-wave screening face by the space that magnetron 4 and heater 1 constitute with metal or corresponding alloy, microwave is cut off in above-mentioned space and extraneous space.

5. according to the 1st described heating means of claims, it is characterized in that: the material that constitutes microwave heater 1 is meant one or both or the two or more combinations wherein of four-needle-like zinc oxide, one dimension pillar shaped ZnO, ferrite, carbon fiber, carborundum.

6. according to the 1st described heating means of claims, it is characterized in that: the material profile that constitutes microwave heater 1 can be Powdered, granular, hemispherical, column or sheet.

7. according to the 1st described heating means of claims, it is characterized in that: microwave heater 1 can the 5th, the 6th described material of exercise of power claim or sharp processing become pottery, also can press forming, can also be filled in the housing of moulding in addition.