CN100455904C - Top surface plate structure for microwave oven chamber - Google Patents
Top surface plate structure for microwave oven chamber Download PDFInfo
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- CN100455904C CN100455904C CNB2004100719590A CN200410071959A CN100455904C CN 100455904 C CN100455904 C CN 100455904C CN B2004100719590 A CNB2004100719590 A CN B2004100719590A CN 200410071959 A CN200410071959 A CN 200410071959A CN 100455904 C CN100455904 C CN 100455904C
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- furnace chamber
- electromagnetic wave
- waveguide
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- groove
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Abstract
The present invention discloses an upper panel structure for oven chambers of microwave ovens, which comprises a stirring fan and a waveguide pipe, wherein the stirring fan is arranged on the inner wall surface of an oven chamber of a microwave oven; the waveguide pipe is used for electromagnetic waves generated by a permatron, a screw bolt groove is formed in one side of the waveguide pipe; an electromagnetic wave centralization preventing groove concave towards the inner side of the oven chamber is formed in the oven chamber. The present invention has the advantages that the electromagnetic wave centralization preventing groove is formed under the lower side of the screw bolt groove of the prior art for causing flow paths to return to original states, flow paths don't narrow, electromagnetic waves can swimmingly flow, thereby, the present invention can prevent the centralization of electromagnetic waves; because electromagnetic waves don't concentrate, the present invention can prevent the inner wall surface of the oven chamber from being smoked by concentrated electromagnetic waves, electromagnetic waves radiated in the oven chamber are uniformly dispersed and can uniformly heat inner cooking objects; because cooking objects are uniformly heated, the quality of microwave ovens is enhanced for causing users to be satisfied.
Description
Technical field
What the present invention relates to is micro-wave oven, particularly be the top surface plate structure of micro-wave oven furnace chamber.
Background technology
Micro-wave oven is to utilize electric energy to produce ultrashort wave by magnetron, and ultrashort wave is radiated at a kind of device of cooking on the heating objects such as food.
Micro-wave oven can be divided into home-use micro-wave oven that is equipped with small-sized magnetron and the commerce micro-wave oven that is equipped with large-scale or a plurality of magnetrons.
Micro-wave oven can also be distinguished according to the mode of heat food, and home-use micro-wave oven generally adopts the glass rotating disk mode of rotation food; The commercial agitator disk mode that mainly adopts dispersion microwave with micro-wave oven.
Commercial be mainly used in the high food supply retail shop of utilization rate and the fast food restaurant of cooking food at short notice, so generally need the output of relative higher-wattage compared with home-use micro-wave oven with micro-wave oven.
Specify the above-mentioned commercial micro-wave oven of using hereinafter to be referred as microwave oven structure below in conjunction with accompanying drawing.Fig. 1 is the commercial microwave oven stereogram of using of prior art; Fig. 2 is a sectional view on the prior art micro-wave oven furnace chamber; Fig. 3 is the view of blackening state above the prior art micro-wave oven furnace chamber.
Below Fig. 1 microwave oven structure is explained as follows.
Micro-wave oven comprises by shell 11, furnace chamber 20, electric control chamber 30 and constituting.In addition, micro-wave oven also comprises the door 40 that is located at furnace chamber 20 fronts.
Shell forms the micro-wave oven outward appearance, also plays the effect of the inner furnace chamber 20 of protection simultaneously.Therefore, shell is general makes of the steel plate with certain intensity.
Shell is that the center is provided with furnace chamber 20, it be below the top panel 11 of the top and two sides that cover furnace chamber 20 simultaneously, protection base plate 13, form furnace chamber 20 fronts front panel 1, protect the rear board 17 at furnace chamber 20 back sides to constitute.
Promptly be provided with waveguide 21 above the outside above furnace chamber 20, the microwave that magnetron is generated is mapped to furnace chamber 20 inside.In addition, the side at waveguide 21 is provided with the synchronous motor M that drives agitator disk.
Not only on the outside of furnace chamber 20, be provided with above-mentioned waveguide 21, and also be provided with waveguide 21 below the outside.The upper and lower surface of furnace chamber 20 all is provided with waveguide 21, and microwave is mapped to furnace chamber 20 inside simultaneously from upper and lower.
Electric control chamber 30 is the spaces that are positioned at the enclosure right side, and its inside is provided with a plurality of electronic units of promising driving furnace chamber 20 work.
Electric control chamber 30 inside are provided with a plurality of electronic units such as transformer 31, magnetron 33, centrifugal fan 35, capacitor 37.Between the transformer 31 of electric control chamber 30 inside and centrifugal fan 35, demarcation strip 39 is arranged.Transformer 31, centrifugal fan 35, capacitor 37 and demarcation strip 39 be fixed on sub-panel S above, the distance of the appointment of being separated by between sub-panel S and the base plate 13.
In above-mentioned a plurality of electronic units, the microwave that is produced by transformer 31 and magnetron 33 is mapped to furnace chamber 20 inside.In the process that produces microwave, electronic unit can generate heat.Therefore, when cooking food, the temperature of electric control chamber 30 rises.
For the electric control chamber 30 that cools off heating, utilize centrifugal fan 35 to suck extraneous air to electric control chamber 30 coolings.
2 upper structure that specify furnace chamber 20 with reference to the accompanying drawings.
On the right side of furnace chamber 20 magnetron 33 is arranged, at promising its inner electromagnetic antenna 33a that generates that is transmitted in of the upside protrusion formation of magnetron 33.The outer setting that antenna 33a protrudes is being guided the electromagnetic wave of antenna 33a transmission in the waveguide 21 of 20 li of furnace chambers into.Be provided with synchronous motor M above the left side of waveguide 21, synchronous motor M combines with 50 on stirring fan.Synchronous motor M is fixed on above the waveguide 21 (not shown) by motor fixing frame.On motor fixing frame, be formed with installing hole.
Innerly in the left side of waveguide 21 form the promising bolt slot 21a that prevents that the fixing bolt end of synchronous motor M from exposing to waveguide 21 inside.The reason that bolt slot 21a is set is: for prevent electromagnetic wave by the space between bolt and the installing hole to external leakage.
Below stirring fan 50, has upper channel.
But above-mentioned prior art has following shortcoming.
By waveguide 21 transmission, but the height in waveguide 21 left sides is low than the right side from the electromagnetic wave of the antenna 33a of magnetron 33 output.Owing to be formed with bolt slot 21a in the inside, left side of waveguide 21, left channel narrowed down.In this state, concentrate in the left side of waveguide 21, more particularly, around bolt slot 21a, concentrate when antenna 33a output electromagnetic wave.
Electromagnetic wave is transferred to furnace chamber 20 inside with such collected state.If continue this electromagnetic wave collected state, as shown in Figure 3, the top of above-mentioned furnace chamber 20 can blackening.
Summary of the invention
Its purpose of the present invention is to overcome the deficiency of above-mentioned technology, provides a kind of electromagnetic wave that prevents to arrive the top surface plate structure of the micro-wave oven furnace chamber of furnace chamber inside with the state transfer of concentrating.
The technical scheme that solves the problems of the technologies described above: a kind of top surface plate structure of micro-wave oven furnace chamber, the stirring that is included in the micro-wave oven furnace chamber internal face is fanned; The transmission magnetron generates electromagnetic waveguide; At the bolt slot that waveguide one side forms, in furnace chamber, also be formed with the concentrated groove that prevents of the electromagnetic wave that is recessed to form to the furnace chamber inboard.
Described waveguide is positioned at the both sides up and down of furnace chamber outside, possesses the fan of stirring separately in both sides up and down at the furnace chamber internal face.
Described electromagnetic wave is concentrated and is prevented groove and the corresponding formation of bolt slot.
Described electromagnetic wave is concentrated and is prevented that groove from being that the center forms in its both sides to stir fan.
Described electromagnetic wave is concentrated and is prevented that groove from forming certain in furnace chamber upper inside walls face or downside internal face at least.
The invention has the beneficial effects as follows: the advantage of the furnace cavity structure of micro-wave oven of the present invention is:
1) form electromagnetic wave at the downside of prior art bolt slot and concentrate and prevent groove, make stream return to original state, so stream can not narrow down, and electromagnetic wave successfully flows.Thus, can prevent that electromagnetic wave is concentrated.
2) since electromagnetic wave do not concentrate, so the internal face that can prevent furnace chamber by the electromagnetic wave sooting of concentrating, and the electromagnetic wave that is mapped to furnace chamber inside evenly disperses, and can evenly heat inner gratin.
3) owing to even cooking thing, the micro-wave oven quality improves, and makes the user satisfied.
Description of drawings
Fig. 1 is the commercial microwave oven stereogram of using of prior art;
Fig. 2 is a sectional view on the prior art micro-wave oven furnace chamber;
Fig. 3 is the view of blackening state above the prior art micro-wave oven furnace chamber;
Fig. 4 is a sectional view on the micro-wave oven furnace chamber of the present invention;
Fig. 5 is the external view of micro-wave oven furnace chamber upside of the present invention.
The explanation * * * of * * accompanying drawing major part symbol
33: magnetron 33a: antenna
100: furnace chamber 110: waveguide
110a: bolt slot 130: stir fan
200: electromagnetic wave is concentrated and is prevented groove
The specific embodiment
Below in conjunction with accompanying drawing embodiments of the invention are elaborated.
Fig. 4 is a sectional view on the micro-wave oven furnace chamber of the present invention; Fig. 5 is the external view of micro-wave oven furnace chamber upside of the present invention.
Micro-wave oven of the present invention comprises that the furnace chamber by the electric control chamber of shell and a plurality of electronic units and placement gratin constitutes.
As shown in Figure 4, the right side of furnace chamber 100 is equipped with magnetron 33.Magnetron 33 generates electromagnetic wave from transformer (not shown) input high voltage, and is equipped with antenna 33a above it.Therefore, transmit to waveguide by antenna 33a at the magnetron 33 inner electromagnetic waves that generate.
The antenna 33a upside of magnetron 33 is covered by waveguide 110.Waveguide 110 is guiding electromagnetic a kind of passages from antenna 33a transmission, and its left end extends to the middle part of furnace chamber 100.The upside outside of furnace chamber 100 is close to and is fixed on to such waveguide 110.
The top, left side of waveguide 110 is provided with synchronous motor M.Synchronous motor M with stir the fan axle is connected and drives below stirring fan and rotate.
Synchronous motor M is fixed on above the waveguide 110 (not shown) by motor fixed rack.Installing hole is arranged on the motor fixed rack.
In order to prevent that fixedly protrude to waveguide 110 inside the bolt end of synchronous motor M, so be formed with bolt slot 110a in the inside, left side of waveguide 110.It is in order to prevent from the clearance leakage electromagnetic wave between bolt and the installing hole that bolt slot 110a is set.
Below waveguide 110, be equipped with and stir fan 130, in more detail, stir fan 130 in the upper inside walls face outfit of furnace chamber 100.Stir fan 130 for the electromagnetic wave that improves by waveguide 110 guiding is equipped with to furnace chamber 100 degrees of scatter, driven by synchronous motor M and rotate.
The upside outside of furnace chamber 100 is formed with the concentrated groove 200 that prevents of electromagnetic wave.
Electromagnetic wave is concentrated and is prevented that groove 200 is recessed to form in the upside outside of furnace chamber 100 downwards, and corresponding with the bolt slot 110a of waveguide 110.That is, electromagnetic wave is concentrated and is prevented that groove 200 is preferably corresponding, big or small corresponding with the bolt slot 110a formation upper-lower position of waveguide 110.
Prevent that groove 200 is recessed to form in the upside outside of furnace chamber 100 downwards because electromagnetic wave is concentrated, then the leftward space to waveguide 110 enlarges, and remedies bolt slot 110a and protrudes the defective that stream is narrowed down downwards.That is, the internal height H on waveguide 110 right sides follows bolt slot 110a lower end and electromagnetic wave to concentrate and prevents that the distance h between groove 200 bottom surfaces is the same.Therefore, keep identical size from waveguide 110 right sides to the stream in left side.
As mentioned above, waveguide 110 internal flow paths narrow down because of bolt slot 110a protrudes downwards, but owing to be recessed to form the concentrated groove 200 that prevents of electromagnetic wave, waveguide 110 internal flow paths recover original size.Therefore, the electromagnetic wave that is guided by waveguide 110 is transferred to 100 li of furnace chambers by the waveguide 110 of identical internal flow path.
Electromagnetic wave is concentrated and is prevented groove 200 as shown in Figure 5, and it is best being respectively formed at and stirring the fan axle left and right sides.Its reason is: because use the two ends of bolting synchronous motor M, so the 2 bolt slot 110a of place are arranged.Certainly, if the 3 bolt slot 110a of place are arranged, electromagnetic wave is concentrated to prevent that the quantity of groove 200 also should be corresponding therewith.
As mentioned above, not only the upside of furnace chamber 100 outside is provided with waveguide 110, and the downside outside also is provided with waveguide 110.Therefore, electromagnetic wave is concentrated and to be prevented that groove 200 should be recessed to form upward from the downside outside of furnace chamber 100, and is certainly will be also corresponding with quantity, the size of the bolt slot 110a of waveguide 110.
Electromagnetic wave is concentrated to prevent that the process of groove 200 is explained as follows to being provided with outside the upside of furnace chamber 100 below.
When several iron plates engaged and form furnace chamber 100, several iron plates were utilized die-cut being made as of stamping machine of installation mold.At the setting position of upside monolithic mold, have and to produce integral body and be formed with the design that electromagnetic wave is concentrated the upside iron plate prevent groove 200.When also can being bonded with each other or being welded by several iron plates, above-mentioned furnace chamber 100 forms.
In addition, when warpage rectangle iron plate formed furnace chamber 100, warpage behind the general die-cut iron plate thing perhaps carried out die-cut and warpage simultaneously.Which kind of no matter adopts form the method for furnace chamber, form electromagnetic wave when being preferably in die-cut iron plate and concentrate and prevent groove 200.As long as design has electromagnetic wave to concentrate to prevent groove 200 shapes, just can form the concentrated groove 200 that prevents of electromagnetic wave simultaneously on iron plate on the mould of die-cut iron plate.
Electromagnetic wave is concentrated and prevent that groove 200 from also can form in punching press on the upside iron plate of die-cut intact state or iron plate thing.
Concentrate the formation that prevents groove 200 according to electromagnetic wave, it is as follows to eliminate the concentrated phenomenon of electromagnetic wave.
The electromagnetic wave that generates at magnetron 33 is transferred to waveguide 110 inside by antenna 33a.The electromagnetic wave of transmission is guided to the left by waveguide 110.At this moment, form because bolt slot 110a protrudes, the left side stream of waveguide 110 narrows down, so electromagnetic wave is concentrated.But if form the concentrated groove 200 that prevents of electromagnetic wave below bolt slot 110a, the stream that dwindles because of formation bolt slot 110a returns to original state, and the electromagnetism wave energy of waveguide 110 inside flows smoothly, can prevent that thus electromagnetic wave is concentrated.
As mentioned above, basic fundamental thought of the present invention is to utilize the concentrated groove that prevents of electromagnetic wave to eliminate the phenomenon of concentrating to the inner electromagnetic wave that occurs of waveguide because of bolt slot.So the those skilled in the art in present technique field can carry out various deformation in basic thought scope of the present invention.
Claims (4)
1. the top surface plate structure of a micro-wave oven furnace chamber is included in the stirring fan of micro-wave oven furnace chamber internal face; The transmission magnetron generates electromagnetic waveguide; At the bolt slot that waveguide one side forms, it is characterized in that also being formed with the concentrated groove (200) that prevents of the electromagnetic wave that is recessed to form to furnace chamber (100) inboard in furnace chamber (100) lining, described electromagnetic wave is concentrated and is prevented groove (200) and the corresponding formation of bolt slot (110a).
2. the top surface plate structure of micro-wave oven furnace chamber according to claim 1 is characterized in that described waveguide (110) is positioned at the both sides up and down of furnace chamber (100) outside, possesses the fan of stirring (130) separately in both sides up and down at furnace chamber (100) internal face.
3. according to the top surface plate structure of each described micro-wave oven furnace chamber in the claim 1 to 2, it is characterized in that the concentrated groove (200) that prevents of described electromagnetic wave is that the center forms in its both sides to stir fan (130).
4. according to the top surface plate structure of each described micro-wave oven furnace chamber in the claim 1 to 2, it is characterized in that described electromagnetic wave concentrate prevent groove (200) at least in furnace chamber (100) upper inside walls face or downside internal face with the corresponding formation of bolt slot (110a).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100719590A CN100455904C (en) | 2004-09-20 | 2004-09-20 | Top surface plate structure for microwave oven chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100719590A CN100455904C (en) | 2004-09-20 | 2004-09-20 | Top surface plate structure for microwave oven chamber |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1752583A CN1752583A (en) | 2006-03-29 |
| CN100455904C true CN100455904C (en) | 2009-01-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100719590A Expired - Fee Related CN100455904C (en) | 2004-09-20 | 2004-09-20 | Top surface plate structure for microwave oven chamber |
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| Country | Link |
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| CN (1) | CN100455904C (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4303817A (en) * | 1978-07-12 | 1981-12-01 | Bosch-Siemens Hausgerate Gmbh | Microwave oven |
| JPH06213461A (en) * | 1993-01-20 | 1994-08-02 | Matsushita Electric Ind Co Ltd | High frequency heating device |
| JPH07220866A (en) * | 1994-01-31 | 1995-08-18 | Toshiba Corp | Microwave oven |
| JPH08148274A (en) * | 1994-11-17 | 1996-06-07 | Toshiba Corp | High frequency heating apparatus |
| CN2345868Y (en) * | 1998-06-05 | 1999-10-27 | 王普敬 | Multifunction microwave oven |
| CN1455171A (en) * | 2002-04-29 | 2003-11-12 | 乐金电子(天津)电器有限公司 | Stirring fan mounting structure for microwave oven |
| CN1465897A (en) * | 2002-07-04 | 2004-01-07 | 乐金电子(天津)电器有限公司 | Support device for stirring fan of microwave oven |
-
2004
- 2004-09-20 CN CNB2004100719590A patent/CN100455904C/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4303817A (en) * | 1978-07-12 | 1981-12-01 | Bosch-Siemens Hausgerate Gmbh | Microwave oven |
| JPH06213461A (en) * | 1993-01-20 | 1994-08-02 | Matsushita Electric Ind Co Ltd | High frequency heating device |
| JPH07220866A (en) * | 1994-01-31 | 1995-08-18 | Toshiba Corp | Microwave oven |
| JPH08148274A (en) * | 1994-11-17 | 1996-06-07 | Toshiba Corp | High frequency heating apparatus |
| CN2345868Y (en) * | 1998-06-05 | 1999-10-27 | 王普敬 | Multifunction microwave oven |
| CN1455171A (en) * | 2002-04-29 | 2003-11-12 | 乐金电子(天津)电器有限公司 | Stirring fan mounting structure for microwave oven |
| CN1465897A (en) * | 2002-07-04 | 2004-01-07 | 乐金电子(天津)电器有限公司 | Support device for stirring fan of microwave oven |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1752583A (en) | 2006-03-29 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090128 Termination date: 20091020 |