CN101645385A - Water cooling structure of microwave oven magnetron - Google Patents
Water cooling structure of microwave oven magnetron Download PDFInfo
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- CN101645385A CN101645385A CN200810054097A CN200810054097A CN101645385A CN 101645385 A CN101645385 A CN 101645385A CN 200810054097 A CN200810054097 A CN 200810054097A CN 200810054097 A CN200810054097 A CN 200810054097A CN 101645385 A CN101645385 A CN 101645385A
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Abstract
The invention relates to a water cooling structure of a microwave oven magnetron, which comprises a circulating water pipe, a water pump and fins, wherein the water pump is connected with the circulating water pipe; part of the water pipe is wound on the outer side of a positive electrode; and part of the outer side of the water pipe is sleeved with the fins. The water pipe is a copper pipe with large thermal coefficients. The fins sleeved on the outer side of the water pipe are made of aluminum alloy, are arranged on the water pipe alternately, and are vertical to the penetrating water pipe.Under the action of the water pump, the water in the water pipe flows circularly, wherein the cold water entering the water pipe on the outer side of the positive electrode absorbs the heat of the positive electrode and is heated into hot water, the hot water flows to the water pipe of which the outer side is sleeved with the fin to radiate into cold water again, the cold water absorbs the heat ofthe positive electrode and is heated again, and is cooled by the fin radiation again, and the water circulates to radiate and cool the magnetron in turn. The fan blows air to the fins to intensify the convection radiating and improve the radiating and cooling effect of the magnetron.
Description
Technical field
The present invention relates to the magnetron of microwave oven, particularly relate to the heat radiation cooling structure of microwave oven magnetic.
Background technology
Microwave oven is the household electrical appliance cooker that utilizes high-frequency microwave that food is heated, and the frictional heat that produces by food molecule high vibration under the radiation effects of high-frequency microwave heats and cooking food.During the cooking in microwave oven operation, microwave penetration food, can inside and outside heating simultaneously, it is fast and use plurality of advantages easily to have an efficient height, speed.Therefore, microwave oven progressively becomes widely used domestic electric appliance.The outward appearance of microwave oven is rectangular shape, and there is fire door in the housing front of cuboid, fire door one side setting operation key.Form furnace chamber in the housing, the top and side of furnace chamber is provided with the internal structure of microwave oven, mainly contains magnetron, waveguide, control circuit device etc.
Magnetron is the heart of microwave oven, is a kind of vacuum device, is used to produce the continuous microwave of heat food.The magnetron main composition partly is tube core and magnet, and tube core comprises negative electrode, anode and antenna.After being positioned at negative electrode that magnetron central authorities have filament and being heated, promptly anode is launched a large amount of electronics.Anode surrounds negative electrode, is positioned at the peripheral of magnetron and is exposed cathodic last ring round resonant cavity of anode.The electronics of cathode emission is subjected to the effect of the high-intensity magnetic field of magnet formation again in the anode motion process, electronics is done the wheel cycloid motion under the acting in conjunction of electric field force and magnetic field force, and vibrates and the generation microwave in the negative electrode resonant cavity.Microwave is exported through antenna, enters furnace chamber through waveguide again.
The power supply connecting device of magnetron includes high-tension transformer, high-voltage capacitor, high voltage silicon stack etc., and anode of magnetron voltage is the pulsating direct current crest voltage of 3～4kV, and magnetron is in work and the high heat of generation under the high pressure conditions.And the conversion efficiency of magnetron is about 70%, i.e. 70% of magnetron power consumption is converted to the microwave radiation energy, and all the other power consumptions of 30% are converted to heat and spread in magnetron.Yet magnetron sustains damage in excessive temperature environmental condition work meeting, therefore; overheat protector is installed on the magnetron; so that when the temperature rise of magnetron surpasses the limit of regulation, the overheat protector action is also cut off operating circuit, prevents that magnetron from damaging because of overheated.
And the more important thing is that magnetron must be provided with cooling device, and in work, cool off, to ensure its operate as normal, adopt fan to carry out air blast cooling usually, be the magnetron cooling.
Fig. 1 is the structural representation of the microwave oven magnetic of prior art.As shown in the figure, the housing of magnetron is two square bodies up and down, in the upper body 1 tube core is set, and comprises negative electrode, anode and antenna 7, tube core is set in the lower case 2 also is connected with external power source by attaching plug 3 with the jockey of external power source.The copper sheathing 4 arranged outside fin 6 of anode, fin 6 is tabular aluminium flake, along anode shaft to alternate configuration.Expose to the outside by the side of upper body 1 uncovered 5 around the fin 6 of anode.The side of upper body 1 uncovered 5 is used to the circulation of air of dispelling the heat, from the side to the magnetron blowing, air passes fin 6 backs from relative uncovered the blowing out in another side from uncovered blowing in side by fan, moving air is strengthened heat loss through convection, makes magnetron heat radiation cooling.
But,, mainly utilize the fin heat radiation cooling of anode outside axial arrangement for the microwave oven magnetic of above-mentioned prior art, although the air that fan blows flows through from the fin gap, but aluminium heat sink is too concentrated, and distribute heat is limited, and the heat radiation cooling effectiveness is low.
Summary of the invention
Microwave oven magnetic at above-mentioned prior art exists aluminium heat sink too concentrated, the problem that distribute heat is limited, the present invention releases new magnetron radiator structure, its purpose is, at anode of magnetron arranged outside cold water pipe, to reduce temperature of anode, increase distribute heat by the cold water circulation.
Water cooling structure of microwave oven magnetron involved in the present invention comprises circulating water pipe, water pump and fin, and water pump connects circulating water pipe, and the part of water pipe is around the anode outside, and the part outside of water pipe is with fin.Water pipe is the big copper pipe of conductive coefficient.Under the effect of water pump, boiler water circulation in the water pipe flows, the cold water that enters water pipe anode Outboard Sections absorbs the anode heat intensification becomes hot water, be with water pipe heat radiation the becoming cold water of fin outside flowing to again, and then the absorption anode heat heats up, by the fin radiating and cooling, circulation is magnetron heat radiation cooling successively again.Fan is dried to fin, strengthens heat loss through convection, promotes magnetron heat radiation cooling effect.
Description of drawings
Fig. 1 is the structural representation of the microwave oven magnetic of prior art.
Fig. 2 is a water cooling structure of microwave oven magnetron schematic diagram of the present invention.
Fig. 3 is a water cooling structure of microwave oven magnetron generalized section of the present invention.
Main mark explanation among the figure:
1, upper body 2, lower case
3, attaching plug 4, anode copper sheathing
5, uncovered 6, the fin in upper body side
7, antenna 8, water pipe
9, water pump 10, fin
Embodiment
Now in conjunction with the accompanying drawings to being described further for the present invention.Fig. 2 is a water cooling structure of microwave oven magnetron schematic diagram of the present invention.Fig. 3 is a water cooling structure of microwave oven magnetron generalized section of the present invention.
As shown in Figures 2 and 3, water cooling structure of microwave oven magnetron involved in the present invention comprises circulating water pipe 8, water pump 9 and fin 10, and water pump 9 connects circulating water pipe 8, a part water pipe on the copper sheathing 4 of anode external, the arranged outside fin 10 of a part of water pipe.Water pipe 8 is the big copper pipe of conductive coefficient, and fin 10 is an aluminium alloy.Fin 10 alternate being configured on the water pipe 8, and vertical with the water pipe that passes.
Under the effect of water pump 9, the boiler water circulation in the water pipe 8 flows, and the heat intensification that the cold water in the anode Outboard Sections water pipe absorbs anode 4 becomes hot water, becomes cold water by fin 10 radiating and cooling under fan forced convection again, thereby reaches magnetron heat radiation cooling.
Claims (5)
1, a kind of water cooling structure of microwave oven magnetron, related magnetron comprises negative electrode, anode and antenna, there is copper sheathing in the anode outside, it is characterized in that, water-cooling structure comprises circulating water pipe, water pump and fin, water pump connects circulating water pipe, and the part of water pipe is around the anode outside, and the part outside is with fin.
2, water cooling structure of microwave oven magnetron according to claim 1 is characterized in that, described water pipe is the big copper pipe of conductive coefficient.
3, water cooling structure of microwave oven magnetron according to claim 1 is characterized in that, fin that the described water pipe outside is with is an aluminium alloy.
4, water cooling structure of microwave oven magnetron according to claim 1 is characterized in that, alternate being configured on the water pipe of fin that the described water pipe outside is with, and vertical with the water pipe that passes.
5, a kind of described water-cooling structure of claim 1 that utilizes carries out the microwave oven magnetic water-cooling method, it is characterized in that, under the effect of water pump, boiler water circulation in the water pipe is flowed, the cold water that enters anode Outboard Sections water pipe absorbs the anode heat intensification becomes hot water, flows to water pipe heat radiation the becoming cold water that the outside is with the fin part again, and then absorbs the anode heat intensification, by the fin radiating and cooling, circulation is magnetron heat radiation cooling successively again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810054097A CN101645385A (en) | 2008-08-08 | 2008-08-08 | Water cooling structure of microwave oven magnetron |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810054097A CN101645385A (en) | 2008-08-08 | 2008-08-08 | Water cooling structure of microwave oven magnetron |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101645385A true CN101645385A (en) | 2010-02-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810054097A Pending CN101645385A (en) | 2008-08-08 | 2008-08-08 | Water cooling structure of microwave oven magnetron |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102721088A (en) * | 2012-04-19 | 2012-10-10 | 美的集团有限公司 | Magnetron for microwave oven |
| CN103137397A (en) * | 2013-02-06 | 2013-06-05 | 江苏海明医疗器械有限公司 | Electromagnet for magnetron |
| CN104964317A (en) * | 2015-06-05 | 2015-10-07 | 惠而浦（中国）股份有限公司 | Water-cooling silent frequency-variable microwave oven |
| CN105810534A (en) * | 2016-04-09 | 2016-07-27 | 安徽众尚微波科技有限公司 | Water-cooling heat dissipation device for magnetron of microwave drying device |
| CN105841420A (en) * | 2016-04-09 | 2016-08-10 | 安徽众尚微波科技有限公司 | Water cooling heat dissipation device of microwave drying equipment |
| CN107660011A (en) * | 2017-10-30 | 2018-02-02 | 广东美的厨房电器制造有限公司 | Cooling component and microwave heating equipment for microwave heating equipment |
| CN111261476A (en) * | 2018-11-30 | 2020-06-09 | 曾东荣 | Heat sink for microwave magnetron |
| CN113802150A (en) * | 2021-03-01 | 2021-12-17 | 包头瑞鑫稀土金属材料股份有限公司 | Water-cooled anode current conducting plate device of large-scale rare earth molten salt electrolytic cell |
-
2008
- 2008-08-08 CN CN200810054097A patent/CN101645385A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102721088A (en) * | 2012-04-19 | 2012-10-10 | 美的集团有限公司 | Magnetron for microwave oven |
| CN103137397A (en) * | 2013-02-06 | 2013-06-05 | 江苏海明医疗器械有限公司 | Electromagnet for magnetron |
| CN104964317A (en) * | 2015-06-05 | 2015-10-07 | 惠而浦（中国）股份有限公司 | Water-cooling silent frequency-variable microwave oven |
| CN105810534A (en) * | 2016-04-09 | 2016-07-27 | 安徽众尚微波科技有限公司 | Water-cooling heat dissipation device for magnetron of microwave drying device |
| CN105841420A (en) * | 2016-04-09 | 2016-08-10 | 安徽众尚微波科技有限公司 | Water cooling heat dissipation device of microwave drying equipment |
| CN107660011A (en) * | 2017-10-30 | 2018-02-02 | 广东美的厨房电器制造有限公司 | Cooling component and microwave heating equipment for microwave heating equipment |
| CN111261476A (en) * | 2018-11-30 | 2020-06-09 | 曾东荣 | Heat sink for microwave magnetron |
| CN113802150A (en) * | 2021-03-01 | 2021-12-17 | 包头瑞鑫稀土金属材料股份有限公司 | Water-cooled anode current conducting plate device of large-scale rare earth molten salt electrolytic cell |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20100210 |