CN103791527A - External radiation-free electromagnetic oven - Google Patents
External radiation-free electromagnetic oven Download PDFInfo
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- CN103791527A CN103791527A CN201210431509.2A CN201210431509A CN103791527A CN 103791527 A CN103791527 A CN 103791527A CN 201210431509 A CN201210431509 A CN 201210431509A CN 103791527 A CN103791527 A CN 103791527A
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Abstract
The invention discloses an external radiation-free electromagnetic oven. The external radiation-free electromagnetic oven is composed of a shell pedestal, a shell top cover, a shielding panel, a cooking pot body, a shell radiation absorbing layer, an electromagnetic transition work circuit and a power supply ground wire. The shell pedestal, the shell top cover and the shielding panel form a complete shell, the radiation absorbing layer is arranged in a corresponding position of the shell, and functional devices of the electromagnetic oven are installed in the shell; and the power supply ground wire is connected with the shell radiation absorbing layer and the shielding panel, the cooking pot body fully contacts with the shielding panel, the shielding panel and the shell radiation absorbing layer form a complete shield cover body, and when an electronic circuit at the inner side of the shell shield cover body, shielding absorption of the shield cover body is realized, and the ground wire in power lines is connected with the ground to carry out discharge elimination in order to eliminate the hazards of discharged electromagnetic radiation during the working of the electromagnetic oven. The external radiation-free electromagnetic oven can be used in fields of household electromagnetic ovens, chafing dish electromagnetic ovens, tea electromagnetic ovens, cabinet electromagnetic ovens and electromagnetic cookers, and industrial and commercial electromagnetic induction heating fields.
Description
Technical field
The present invention relates to shielding and reduce or eliminate the field of electrical equipment electromagnetic radiation, especially a kind of electromagnetic radiation can shield absorption and eliminate by the earth connection in power supply without external radiation electromagnetic oven.
Background technology
In recent years, electromagnetic oven becomes household electrical appliances rising star because its thermal efficiency is high and has entered huge numbers of families.Its operation principle is: AC power is converted to direct current through rectifier, make direct current become the high-frequency alternating current of 20-30KHZ through RF power converter again, again high-frequency alternating current is added on the electromagnetic induction coil of flat cored screw shape, produce thus high-frequency alternating magnetic field, its magnetic line of force penetrates the heat-resisting support panel of stove shell top setting and acts on the metal pan being placed on this support panel, in metal pan bottom, because electromagnetic induction produces powerful eddy current, the internal resistance that eddy current overcomes the bottom of a pan produces thermal source.Electromagnetic oven work that is to say as long as just must have the substantial radiation source that the high frequency of 20-30KHZ and the low frequency of 220V are superimposed.The electromagnetic radiation meeting of electromagnetic oven is known from experience and is caused adverse effect the people of close contact electromagnetic oven, and research staff has proposed many technical schemes to solve electromagnetic radiation for this reason.For example, in the Chinese utility model patent description of the CN2682767Y of on March 2nd, 2005 bulletin, disclose " a kind of electromagnetic oven ", its technical scheme comprises body of heater and platen, and platen is fixed on body of heater, body of heater surface is coated with metal coating, and the metal in metal coating is nickel alloy.The body of heater surface of the electromagnetic oven of this structure is coated with metal coating can only carry out part magnetic screen to electromagnetic oven.
In the Chinese utility model patent description of the CN2777921Y of on May 3rd, 2006 bulletin, a kind of " radiation protection electromagentic furnace " disclosed, comprise upper shell, lower house and panel, feature is that the part beyond the relative stove interior loop of panel is provided with metal radiation protective layer, and this metal radiation protective layer is located at outer surface or the inner surface of panel; The inner surface of upper shell, lower house or outer surface are provided with metal radiation protective layer, this metal radiation protective layer disclosed technical scheme in description is: upper shell, lower house can directly adopt ferromagnetic material or composite material to make, also can set up at plastic material housing the cover body of a composite material outward, the heating position of the relative electromagnetic oven of cover body is provided with cooker posting port, and air entry and the exhaust outlet of lower house are provided with wire netting.In above-mentioned disclosed file, technical scheme adopts metal radiation protective layer electromagnetic radiation shielding by electromagnetic induction coil corresponding to the part beyond panel heating position, but the device of eliminating radiation is not set, and between this electromagnetic radiation shielding device panel and housing, have leakage field gap between panel and pan, exist can not be effectively by ELECTROMAGNETIC RADIATION SHIELDING the deficiency eliminated.
In on April 19th, 2006 disclosed Chinese invention patent application prospectus disclosed " a kind of skid resistant, antimagnetic leakage structure of electromagnetic oven ", in the disclosed technical scheme of this application be: include electromagnetic oven main body, cooking pan is seated on the support flat board of electromagnetic oven, the dull and stereotyped outer rim of support is embedded with ring-type skid resistant, antimagnetic leakage the first quoit, electromagnetic induction wire coil outer surrounding in electromagnetic oven is also provided with the second quoit of ring-type antimagnetic leakage, and the second quoit is also connected to a ground wire drawing outward.In above-mentioned disclosed technical scheme, electromagnetic induction coil can only be adopted to quoit radiation-screening corresponding to the part beyond support flat board, and the ground wire connecting on quoit carries out magnetic radiation and releases, ring-type skid resistant, antimagnetic leakage first quoit of the dull and stereotyped outer rim setting-in of support, can further absorb the magnetic line of force, prevent that magnetic dispersion from occurring.But, electromagnetic induction coil is the position that the magnetic line of force is the most intensive, electromagnetic radiation is the strongest corresponding to the pot body heated end portion on support flat board, magnetic line of force major part herein can be absorbed by pot body, and a fraction of magnetic line of force is because of between the second quoit and support flat board, have leakage field gap between pot body and support flat board and the first quoit, cause electromagnetic radiation to let out from leakage field gap, so external electromagnetic radiation still exists.
In addition on June 1st, 2007, in the patent applications such as patent of invention " irradiation eliminating apparatus of the non-radiation electromagnetic oven " patent No. of applying in person and authorize is 200710109398.2, although radiation provides a kind of shielding and cancellation element technology of complete closure to electromagnetic oven, also there is the problem of pot body and screening can loose contact.
Summary of the invention
Can not desirable shielding eliminate the deficiency of electromagnetic radiation in order to overcome existing electromagentic furnace technology, the invention provides a kind of screening arrangement that has a complete closure, have radiation eliminate loop, can eliminate low-cost high-efficiency electromagnetic oven radiation without external radiation electromagnetic oven.Not only method is simple to utilize this technology, with low cost and also eliminate radiation effect good.
The present invention's adopted technical scheme of dealing with problems is: a kind of without external radiation electromagnetic oven, by complying with the exterior outer casing base that is assigned in one, outer casing upper cover, shielding panel, cooking pan, shell radiation absorption layer, electromagnetic conversion operating circuit and power ground composition, by outer casing base, outer casing upper cover, a complete housing of shielding panel composition, outer casing base, outer casing upper cover is made of metal material or other insulating materials, shielding panel is made of black crystal panel or other similar materials, cooking pan is made of iron or the good material of other magnetic properties, shell radiation absorption layer is directly to adopt metal shell or at the insulation crust base by plastics etc., the outer casing inner wall of outer casing upper cover composition or outer wall are processed into the radiation absorption layer of approximate shell body with conductive material, again with the complete shielding cover body of one of shielding panel composition, the function element of electromagnetic oven product is loaded on radiation absorption layer inner side, electromagnetic conversion operating circuit is the circuit of selecting existing electromagnetic oven product, power ground adopts and carries out ground wire connection with the single-phase three-jaw attaching plug of ground wire.Ground wire in power line is connected with shell radiation absorption layer and shielding panel, cooking pan fully touches shielding panel, and form a complete shielding cover body by shielding panel and shell radiation absorption layer, when producing electromagnetic radiation, the electronic circuit of shielding cover body inner side just can shield absorption with shielding cover body, ground wire by power line connects the earth eliminations of releasing again, the external hazards of electromagnetic radiation of generation while eliminating electromagnetic oven work completely.
Described shielding panel adopts the front at panel, the appropriate location spraying conductive shield material at reverse side and edge, material therefor is metal plating, metal spraying material, conductive film layer, electrically-conducting paint, conductive paste, conductive fabric, conductive paper, one in conductive plastics conductive material, panel front and reverse side position in corresponding touchpad position when spraying or not, panel reverse side position at corresponding coil panel does not spray, the shielding material spraying in the panel front position of corresponding coil panel can not affect the work of the magnetic line of force, do not indicating that the place that do not spray can whole or locally sprayed screen layer, described part comprises pattern or lines, if when shielding panel uses the radiation absorption layer of other conductive materials outside metallic plate, to or increase metallic plate in the appropriate location of upper cover and base at the upper plastic cover of corresponding electromagnetic wire coil or base simultaneously, increase the effect of armoured magnetic field radiation.
The material that described cooking pan is good with iron or other magnetic properties and outer surface resistance is little is made, and energy contacts with the face that shielding panel carries out small resistor.
Described shell radiation absorption layer can directly adopt metal shell to shield the electromagnetic radiation that in absorption shell, function element sends; If will be processed at outer casing base, outer casing upper cover inner walls or outer wall the radiation absorption layer of approximate housing body when the insulation crust of employing plastic or other material with conductive material, the function element of electromagnetic oven product is loaded on radiation absorption layer inner side, radiation absorption layer material therefor is the one in metallic plate, metal spraying material, conductive film layer, electrically-conducting paint, conductive paste, conductive fabric, conductive paper, conductive plastics conductive material, and described electromagnetic conversion operating circuit is the one adopting in the general various electromagnetic conversion operating circuits of existing electromagentic furnace technology.
Described power ground adopts and carries out ground wire connection with the single-phase three-jaw attaching plug of ground wire.
The invention has the beneficial effects as follows: simple in structure, with low cost, eliminate good, the highly versatile of radiation effect.
accompanying drawing explanation:
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is a kind of principle schematic of the present invention.
Fig. 2 is a kind of example structure schematic diagram of the present invention.
Mark in figure: 1. outer casing base, 2. outer casing upper cover, 3. shielding panel, 4. cooking pan, 5. shell radiation absorption layer, 6. electromagnetic conversion operating circuit, 7. power ground.
The specific embodiment
Below in conjunction with the principle schematic in accompanying drawing and structural representation, the present invention is further described:
Fig. 1 is a kind of principle schematic without external radiation electromagnetic oven, mainly comprises: outer casing base (1), outer casing upper cover (2), shielding panel (3), cooking pan (4), shell radiation absorption layer (5), electromagnetic conversion operating circuit (6), power ground (7).In the accompanying drawings, power ground (7) is connected with radiation absorption layer (6) shielding panel (3), cooking pan (4) fully touches shielding panel (3), and form a complete shielding cover body by shielding panel (3) and shell radiation absorption layer (5), when producing electromagnetic radiation, the electronic circuit of shielding in cover body just can shield absorption with shielding cover body, then by the elimination of releasing of the ground wire in power line (7) connection the earth.
Fig. 2 is the structural representation of the irradiation eliminating apparatus of a kind of non-radiation electromagnetic oven of designing according to the operation principle of Fig. 1, by outer casing base (1), outer casing upper cover (2), a complete housing of shielding panel (3) composition, wherein outer casing base (1), outer casing upper cover (2) is made of the insulating materials such as metal material or plastics, pottery for shielding panel (3), black brilliant plate or other similar materials are made, the material making that cooking pan (4) is good with iron or other magnetic properties and outer surface resistance is little, its overall outer surface metal requires light, the smaller the better with shielding panel (3) contact resistance, shell radiation absorption layer (5) is directly to adopt metal shell or at the insulation crust base by plastics etc., the outer casing inner wall of outer casing upper cover composition or outer wall are processed into the radiation absorption layer of approximate shell body with conductive material, again with the complete shielding cover body of one of shielding panel (3) composition, the function element of electromagnetic oven product is loaded on shell radiation absorption layer (5) inner side, electromagnetic conversion operating circuit (6) is the circuit of selecting existing electromagnetic oven product, power ground (7) adopts and carries out ground wire connection with the single-phase three-jaw attaching plug of ground wire.Ground wire (7) in power line is connected with shell radiation absorption layer (5) and shielding panel (3), cooking pan (4) fully touches shielding panel (3), and form a complete shielding cover body by shielding panel (3) and shell radiation absorption layer (5), when producing electromagnetic radiation, the electronic circuit of shielding cover body inner side just can shield absorption with shielding cover body, connect the earth eliminations of releasing by the ground wire in power line (7) again, the external hazards of electromagnetic radiation of generation while eliminating electromagnetic oven work completely.
Shielding panel (3) adopts the front at panel, the appropriate location spraying conductive shield material at reverse side and edge, material therefor is metal plating, metal spraying material, conductive film layer, electrically-conducting paint, conductive paste, conductive fabric, conductive paper, one in conductive plastics conductive material, panel front and reverse side position in corresponding touchpad position when spraying or not, panel reverse side position at corresponding coil panel does not spray, the shielding material spraying in the panel front position of corresponding coil panel can not affect the work of the magnetic line of force, do not indicating that the place that do not spray can whole or locally sprayed screen layer, described part comprises pattern or lines, if when shielding panel (3) uses the radiation absorption layer of other conductive materials outside metallic plate, to or increase metallic plate in the appropriate location of upper cover and base at the upper plastic cover of corresponding electromagnetic wire coil or base simultaneously, increase the effect of armoured magnetic field radiation.
The material that cooking pan (4) is good with iron or other magnetic properties and outer surface resistance is little is made, and energy contacts with the face that shielding panel (3) carries out small resistor.
Shell radiation absorption layer (5) directly adopts metal shell to shield the electromagnetic radiation that in absorption shell, function element sends; If will be processed at outer casing base, upper cover inner walls or outer wall the radiation absorption layer of approximate housing body when the insulation crust of employing plastic or other material with conductive material, the function element of electromagnetic oven product is loaded on radiation absorption layer inner side, radiation absorption layer material therefor is the one in metallic plate, metal spraying material, conductive film layer, electrically-conducting paint, conductive paste, conductive fabric, conductive paper, conductive plastics conductive material, and electromagnetic conversion operating circuit (6) is the one adopting in the general various electromagnetic conversion operating circuits of existing electromagentic furnace technology.
Power ground (7) adopts and carries out ground wire connection with the single-phase three-jaw attaching plug of ground wire.
The present invention can be used on all fields by electromagnetic induction heating such as Household induction cooker, hot pot induction cooker, tea electromagnetic oven, cabinet electromagnetic oven, electromagnetism rice cooker and industry, business.
Claims (6)
1. without external radiation electromagnetic oven, formed by outer casing base, outer casing upper cover, shielding panel, cooking pan, shell radiation absorption layer, electromagnetic conversion operating circuit and power ground, it is characterized in that: shell radiation absorption layer connects shielding panel and is connected with the ground wire in power line, cooking pan fully touches shielding panel and forms a complete shielding cover body by shielding panel and shell radiation absorption layer.
According to described in claim 1 without external radiation electromagnetic oven, it is characterized in that: described shell radiation absorption layer directly adopts metal shell to shield to absorb the electromagnetic radiation that function element sends in shell; If will be processed into radiation absorption layer with conductive material in the inner walls of outer casing base and upper cover or outer wall when the insulation crust of employing plastic or other material, the function element of electromagnetic oven product is loaded on radiation absorption layer inner side, and radiation absorption layer material therefor is the one in metallic plate, metal spraying material, conductive film layer, electrically-conducting paint, conductive paste, conductive fabric, conductive paper, conductive plastics conductive material.
3. according to claim 1 without external radiation electromagnetic oven, it is characterized in that: described shielding panel adopts the front at panel, the appropriate location spraying conductive shield material at reverse side and edge, material therefor is metal plating, metal spraying material, conductive film layer, electrically-conducting paint, conductive paste, conductive fabric, conductive paper, one in conductive plastics conductive material, panel front and reverse side position in corresponding touchpad position when spraying or not, panel reverse side position at corresponding coil panel does not spray, the shielding material spraying in the panel front position of corresponding coil panel can not affect the work of the magnetic line of force, do not indicating that the place that do not spray can whole or locally sprayed screen layer, described part comprises pattern or lines, if when shielding panel uses the radiation absorption layer of other conductive materials outside metallic plate, to or increase metallic plate in the appropriate location of upper cover and base at the upper plastic cover of corresponding electromagnetic wire coil or base simultaneously, increase the effect of armoured magnetic field radiation.
According to described in claim 1 without external radiation electromagnetic oven, it is characterized in that: the material that cooking pan iron or other magnetic properties are good and outer surface resistance is little is made, and energy and shielding panel carry out the Surface Contact of small resistor.
According to described in claim 1 without external radiation electromagnetic oven, it is characterized in that: described electromagnetic conversion operating circuit is the one adopting in the general various electromagnetic conversion operating circuits of electromagentic furnace technology.
According to described in claim 1 without external radiation electromagnetic oven, it is characterized in that: power ground adopt carry out ground wire connection with the single-phase three-jaw attaching plug of ground wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210431509.2A CN103791527A (en) | 2012-11-02 | 2012-11-02 | External radiation-free electromagnetic oven |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210431509.2A CN103791527A (en) | 2012-11-02 | 2012-11-02 | External radiation-free electromagnetic oven |
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| Publication Number | Publication Date |
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| CN103791527A true CN103791527A (en) | 2014-05-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210431509.2A Pending CN103791527A (en) | 2012-11-02 | 2012-11-02 | External radiation-free electromagnetic oven |
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| CN (1) | CN103791527A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106923643A (en) * | 2015-12-31 | 2017-07-07 | 佛山市顺德区美的电热电器制造有限公司 | Cooking apparatus and interior pot |
| CN106923644A (en) * | 2015-12-31 | 2017-07-07 | 佛山市顺德区美的电热电器制造有限公司 | Cooking apparatus |
| CN106923645A (en) * | 2015-12-31 | 2017-07-07 | 佛山市顺德区美的电热电器制造有限公司 | Cooking apparatus |
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| DE29710329U1 (en) * | 1997-06-13 | 1998-10-15 | AEG Hausgeräte GmbH, 90429 Nürnberg | Electric cooker |
| CN2828598Y (en) * | 2006-03-31 | 2006-10-18 | 北京任我赢数码科技有限公司 | Structure of preventing electromagnetic radiation of electromagnetic stove |
| CN201014585Y (en) * | 2007-03-27 | 2008-01-30 | 滕翔升 | Anti-radiation electromagnetic furnace |
| CN201636930U (en) * | 2010-04-14 | 2010-11-17 | 和萌 | Self-checking radiation-proof safe induction cooker adopting three-phase power socket |
| CN202253815U (en) * | 2011-10-10 | 2012-05-30 | 牛永立 | Non-radiative induction cooker |
| CN202284815U (en) * | 2011-07-16 | 2012-06-27 | 荣成市宇达电子环保科技有限公司 | Radiation eliminating device for radiation-free induction cooker |
-
2012
- 2012-11-02 CN CN201210431509.2A patent/CN103791527A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE29710329U1 (en) * | 1997-06-13 | 1998-10-15 | AEG Hausgeräte GmbH, 90429 Nürnberg | Electric cooker |
| CN2828598Y (en) * | 2006-03-31 | 2006-10-18 | 北京任我赢数码科技有限公司 | Structure of preventing electromagnetic radiation of electromagnetic stove |
| CN201014585Y (en) * | 2007-03-27 | 2008-01-30 | 滕翔升 | Anti-radiation electromagnetic furnace |
| CN201636930U (en) * | 2010-04-14 | 2010-11-17 | 和萌 | Self-checking radiation-proof safe induction cooker adopting three-phase power socket |
| CN202284815U (en) * | 2011-07-16 | 2012-06-27 | 荣成市宇达电子环保科技有限公司 | Radiation eliminating device for radiation-free induction cooker |
| CN202253815U (en) * | 2011-10-10 | 2012-05-30 | 牛永立 | Non-radiative induction cooker |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106923643A (en) * | 2015-12-31 | 2017-07-07 | 佛山市顺德区美的电热电器制造有限公司 | Cooking apparatus and interior pot |
| CN106923644A (en) * | 2015-12-31 | 2017-07-07 | 佛山市顺德区美的电热电器制造有限公司 | Cooking apparatus |
| CN106923645A (en) * | 2015-12-31 | 2017-07-07 | 佛山市顺德区美的电热电器制造有限公司 | Cooking apparatus |
| CN106923645B (en) * | 2015-12-31 | 2018-09-11 | 佛山市顺德区美的电热电器制造有限公司 | Cooking apparatus |
| CN106923644B (en) * | 2015-12-31 | 2018-11-23 | 佛山市顺德区美的电热电器制造有限公司 | Cooking apparatus |
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Application publication date: 20140514 |