CN102997295A - Convective microwave oven - Google Patents
Convective microwave oven Download PDFInfo
- Publication number
- CN102997295A CN102997295A CN2011102693612A CN201110269361A CN102997295A CN 102997295 A CN102997295 A CN 102997295A CN 2011102693612 A CN2011102693612 A CN 2011102693612A CN 201110269361 A CN201110269361 A CN 201110269361A CN 102997295 A CN102997295 A CN 102997295A
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- convection
- microwave oven
- rubber base
- rotation shaft
- teabowl
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Abstract
The invention discloses a convective microwave oven. The convective microwave oven adopts a turbine fan as a convective fan, a rotation shaft supporting structure is arranged between the rotation shaft of the turbine fan and a left side plate, the rotation shaft supporting structure comprises a copper shaft sleeved on the end portion of the rotation shaft, a rubber seat capable of containing the copper shaft, and a cover tureen which is separably fixedly connected to the outside of the left side plate and clamps the rubber seat. The fan rotation shaft supporting mechanism utilizes the smooth contact of the metal rotation shaft and the copper shaft to realize the relative smooth rotation of the two shafts without lubrication oil, so the influences on the shafts are small and the normal rotation of the shafts is guaranteed at a high temperature; the rubber seat is utilized to support and limit the copper shaft, so the shake of the rotation shaft is effectively absorbed, and the noise is reduced; and the deformable characteristic of the rubber is utilized to properly reduce the assembling precision in order to improve the assembling efficiency.
Description
Technical field
The present invention relates to a kind of convection-microwave oven, relate in particular to a kind of rotation shaft supporting structure of turbofan of convection-microwave oven.
Background technology
Generally say and, micro-wave oven is with plugged, utilizes the microwave action that produces and the machine of cooking food easily.Particularly recently except magnetron, also be provided with the heating sources such as heating element, multiple cooking method occurred, such as convection-microwave oven, this micro-wave oven has the function that the radiant heat that produced by electric heater and fan and advection heat cook food, and the major function that is cooked food by microwave energy.Utilize this convection-microwave oven to hot plate the core of their inside by foods such as the microwave energy picture flesh of fish evenly and thoroughly, and make their surface slightly be baked heat to produce delicious food and to show better outward appearance by hot-air.
Chinese patent 96107887.1 discloses a kind of convection-microwave oven, is installed in the back of hotting plate the chamber so that hot plate under the mode air by the electric heater heating in convection current and can be discharged into and hot plate in the chamber comprising the hot-air releasing device of drive motor and fan.This hot-air releasing device is set to be partial on sidewall formed air stream hand-hole and hots plate steam in the chamber with elimination, hots plate under the mode hot-air in convection current thus and discharges and cause gas curtain shroud air ostium to the air stream hand-hole.
Chinese patent 200410072921.5 discloses a kind of convection-microwave oven, is made of micro-wave oven body, cavity, electronic components chamber, convection section, convection cell cover cap, bonnet, and described micro-wave oven body includes shell, rear board and front panel; Described cavity is positioned at the intrinsic side of micro-wave oven, and is formed with cooking room; Described electronic components chamber is arranged on the intrinsic opposite side of micro-wave oven, and the front side in described space is provided with the various electronic units such as high-tension transformer, magnetron, and the rear side in described space is provided with Air Blast fan and fan electromotor; Described convection section is fixedly installed on the rear board of micro-wave oven rear side, and being used for provides heat of high temperature to cooking room; Described convection cell cover cap is arranged on the rear side of convection section, for the protection of the member in the convection section; Described bonnet is arranged on the rear side of electronic components chamber.
Disclosed such as above-mentioned two patents, the hot air convection system of existing convection-microwave oven all uses centrifugal fan as the hot blast drive source, and the centrifugal fan wind speed is low, air quantity is little, cause cooking speed slow, energy efficiency is low, simultaneously because of the approval of its large reducing noise user to product.
Have now turbofan is incorporated in the convection cell of convection-microwave oven of micro-wave oven, but, when the turbofan support cooperates with the rotating shaft of turbofan, generally adopt at internal stent installing ring ball and lubricating oil, when rotating shaft was rotated, ball rotated thereupon, during normal temperature, ball turns round smooth and easy owing to the effect of lubricating oil; But the convection cell internal temperature is very high, and the temperature of rotating shaft place is also handed over high, and lubricating oil can't bear high temperature, and when ball can't run well, the problems such as stall, fusing can appear in turbofan, have a strong impact on product quality.
Summary of the invention
The technical problem to be solved in the present invention provides a kind ofly can be moved smooth and easy and have the adaptive turbofan supporting construction of higher temperature.
For solving the problems of the technologies described above, the technical solution adopted in the present invention is:
A kind of convection-microwave oven, the convection cell that it comprises cooking cavity and is arranged on cooking cavity rear board rear portion, wherein, described convection cell adopts turbofan as convection fan, be provided with rotation shaft supporting structure between described turbofan rotating shaft and left plate, it comprises the copper axle that is set in roller end, the copper axle can be contained the rubber base in it and be fixedly connected on separably the left plate outside and with rubber base clamping teabowl with a cover therebetween, wherein, described copper axle central hub place offers the pilot hole that can allow rotating shaft to insert, and described rubber base center is provided with the assembly cavity that the copper axle can be held in it along its axial direction.
Preferably, described left support plate protrudes laterally and is formed with bulge loop, described bulge loop limits to into a container cavity that rubber base can be held in it, described container cavity 33 is columnar structured or the truncated cone-shaped structure, utilize the spacing of container cavity and cover plate, can guarantee the steadiness of rubber base location and preparatory.
Preferably, the pilot hole diameter of described copper axle reaches 0.1-0.5mm than rotating shaft diameter, and pilot hole inner surface and the rotating shaft of copper axle are smooth surface, and the smooth contact between two can effectively guarantee rotating effect.
Preferably, described teabowl with a cover is bowl structure and offers a plurality of circles or oval louvre at described teabowl with a cover sidewall, and what louvre can the inner accumulated heat of Effective Raise distributes.
Preferably, described rubber base is made by high-temperature resistant rubber, but it comprises the cylindrical head that the afterbody that can embed matchingly described container cavity inside and self-forming are stretched out in teabowl with a cover bottom center place's locating hole.Utilize clamping position and locating hole location, improve support effect and stability.
Fan shaft supporting construction of the present invention, utilize metal rotating shaft and the smooth contact of copper axle realize its both rotate relative to smooth, because do not need lubricating oil, thus little on its operating condition impact under the high temperature, can guarantee the normal rotation of its high temperature, utilize rubber base support limit copper axle, can effectively absorb the vibrations of rotating shaft, reduce noise, but and utilize the deformation behavior of rubber, can suitably reduce the precision of assembling, improve efficiency of assembling.Offer louvre at the teabowl with a cover sidewall, do not affecting under the prerequisite of himself intensity, the Effective Raise radiating effect prevents that the heat of spin friction is in inner excessive buildup.
Description of drawings
Fig. 1 is convection-microwave oven convection cell structural representation of the present invention;
Fig. 2 is convection cell internal structure front schematic view of the present invention;
Fig. 3 is rotation shaft supporting structure decomposition texture schematic diagram of the present invention;
Fig. 4 is rotating shaft of the present invention and copper axle and rubber base assembly relation schematic diagram.
The specific embodiment
In order to make those skilled in the art person understand better the present invention program, the present invention is described in further detail below in conjunction with drawings and embodiments.
Convection-microwave oven of the present invention comprises the micro-wave oven body; Be formed on the cooking cavity of micro-wave oven body interior; Be provided with the electronic components chamber of various electronic components.When being installed on the front panel, the leading flank that consists of the micro-wave oven body is used for opening and closing the cavity door of cooking cavity.
Be formed with a plurality of intercommunicating pores that are connected with cooking cavity on the rear board in described microwave oven cooking chamber, the back of rear board is provided with convection cell.As shown in Figure 1, convection cell of the present invention is by the rear board (not shown), the front portion is fixedly connected with the rearwardly projecting spiral case 2 in rear portion and left plate 3 with rear board and right plate 4 limitations form, in described convection cell, laterally rotatably be fixedly installed turbofan 5 near its top along it, described turbofan left end is fixedly connected with left plate is rotatable, right-hand member can be in transmission connection with the motor 1 that is fixedly installed on the right plate outside, under described turbofan, be provided with progressively forward extension and convection cell is divided into up and down two-part arc deflector 6 by rear position, the limit, the left and right sides that is described deflector is fixedly connected with left side plate, its lower side contacts with rear board and upper side edge progressively extends under the turbofan by rear side along arching trajectory, that is deflector is divided into convection cell in the air draft chamber of the turbofan air-inlet cavity that is positioned at the top and the turbofan that is positioned at the below, preferably, make an uproar for the wind speed and the reduction wind that improve turbofan, the upper side edge of described deflector and the distance of turbofan are preferably about 10mm.
Be fixedly installed convection heater 8 in described air draft chamber, preferably, it is two rod-type electric heaters, its two ends be separately fixed on the left side plate and by binding post and power connection to realize its function.Certainly, adopt a rod-type electric heater, U-shaped electric heater or other different in nature electric heaters can realize the present invention's purpose, in the different demand for heat of different volume models, can be equipped with the electric heater of different capacity and shape, do not repeat them here.
Preferably, for reducing the heat exchange of convection cell and micro-wave oven outside, described spiral case is double-decker, its outer spiral case consists of the rear portion outward appearance of micro-wave oven, the internal layer spiral case consists of the runner of convection cell, two-layer spiral case arranges separately, the internal layer spiral case preferably adopts the good ceramic material of heat-insulating property, and the metal of the larger intensity of outer spiral case employing or other materials are to improve the micro-wave oven bulk strength, the heat-insulating material of internal layer spiral case and two-layer interval arrange, can effectively reduce heat by the heat exchange of spiral case, improve the whole efficiency of heating surface and avoid simultaneously that the micro-wave oven rear part temperature is too high to cause the destruction that furniture is caused.
Shown in Fig. 2-4, the supporting construction of turbofan left end of the present invention rotating shaft 51 comprises left support plate 3, copper axle 11, rubber base 12 and teabowl with a cover 13, wherein, correspondence position offers the through hole 31 that the rotating shaft 51 that can allow turbofan is passed through on the described left support plate 3, centered by described through hole, protrude laterally and be formed with bulge loop 32, described bulge loop 32 consists of the container cavity 33 that rubber base 12 ends can be held in it, preferably, described container cavity 33 is columnar structured or the truncated cone-shaped structure.
Wherein, the place, axle center offers the cylindrical structural that connects pilot hole centered by the described copper axle 11, and described pilot hole diameter is a bit larger tham the rotating shaft diameter of fan, preferably, described pilot hole diameter reaches 0.1-0.5mm than rotating shaft diameter so that rotating shaft can mate insertion relative rotation can occur.Described rotating shaft matches with the pilot hole of copper axle, and smooth contact between the two can by guaranteeing the smooth and easy running of motion, not need lubricating oil, even high temperature the stall problem can not occur yet.
Described rubber base is made by high-temperature resistant rubber, and it can the degree of anti-300-600 high temperature, at high temperature can not melt, the problem such as damage, and this material existing application in existing no longer is described in detail at this.Described rubber base 12 comprises the cylindrical head 122 of stretching out in the cylindrical or truncated cone-shaped afterbody 121 that can embed matchingly described container cavity inside and teabowl with a cover 13 locating holes 131 that can certainly the following describes, wherein, described rubber base center is provided with the assembly cavity that copper axle 11 can be held in it along its axial direction, the degree of depth of described assembly cavity can make fully insertion that the copper axle just mates in it.
Described teabowl with a cover 13 offers locating hole 131 for bowl structure and at its bottom center place, its bowl body both sides are formed with fixedly ear by screw it is fixedly connected on the left plate outside accordingly, when teabowl with a cover 13 is fixedly connected with left plate, the bottom of rubber base is spacing by left support plate and teabowl with a cover clamping, guarantee its axial location, prevent its occurrence positions, stretch out in the head 122 self-align holes 131 of rubber base simultaneously, it is realized the spacing of upper-lower position, prevent that it from upper and lower displacement occuring.For improving the radiating effect of described teabowl with a cover, offer a plurality of circles or oval louvre at described teabowl with a cover sidewall, with the auxiliary internal temperature that reduces.
In concrete assembling, at first roller end is stretched out in through hole and insert matchingly in the copper axle, then rubber seat cover is located on the copper axle and with rubber base and embeds in the container cavity 33, at last teabowl with a cover is fixedly connected on the left support plate and with rubber base and is clamped between the two, and the head of rubber base is stretched out.
Micro-wave oven hot air convection system of the present invention uses faster turbofan replacement of wind speed centrifugal fan as the hot blast drive source and according to turbofan structural design cavity type air channel structure, take deflector as boundary, the cooled hot blast of food enters the air-inlet cavity of convection cell and passes through the turbofan effect and enters the air draft chamber on top in furnace chamber, the through hole that hot blast after the heater heating passes on the rear board reenters furnace chamber, thereby finishes a cyclic process.In the prefiring of 200 degree, turbofan will have 6 minutes and 10 seconds to foreshorten to 4 minutes the time, and the time saving reaches 30%, and energy consumption has also reduced by 30% simultaneously, and in the heat energy experiment, the heat time heating time of turbofan, same can the saving reached 30%.Because the turbofan wind speed is fast, air quantity is large, can play and improve cooking speed, simultaneously, the cavity type runner is actual, makes air-supply more even, air supplying distance is farther, can guarantee effectively that the temperature in the whole cooking cavity evenly distributes, and improves the effect of energy efficiency, simultaneously, by optimizing spiral case and deflector, can effectively reduce noise, improve user's impression, and spiral case adopts heat insulation structural, few loss of assurance heat, raising safety in utilization.
Fan shaft supporting construction of the present invention, utilize metal rotating shaft and the smooth contact of copper axle realize its both rotate relative to smooth, because do not need lubricating oil, thus little on its operating condition impact under the high temperature, can guarantee the normal rotation of its high temperature, utilize rubber base support limit copper axle, can effectively absorb the vibrations of rotating shaft, reduce noise, but and utilize the deformation behavior of rubber, can suitably reduce the precision of assembling, improve efficiency of assembling.Offer louvre at the teabowl with a cover sidewall, do not affecting under the prerequisite of himself intensity, the Effective Raise radiating effect prevents that the heat of spin friction is in inner excessive buildup.
Claims (8)
1. convection-microwave oven, the convection cell that it comprises cooking cavity and is arranged on cooking cavity rear board rear portion, wherein, described convection cell adopts turbofan as convection fan, it is characterized in that: be provided with rotation shaft supporting structure between described turbofan rotating shaft and left plate, it comprises the copper axle that is set in roller end, the copper axle can be contained the rubber base in it and be fixedly connected on separably the left plate outside and with rubber base clamping teabowl with a cover therebetween, wherein, described copper axle central hub place offers the pilot hole that can allow rotating shaft to insert, and described rubber base center is provided with the assembly cavity that the copper axle can be held in it along its axial direction.
2. convection-microwave oven as claimed in claim 1, it is characterized in that: described left support plate protrudes laterally and is formed with bulge loop, and described bulge loop limits to into a container cavity (33) that rubber base can be held in it.
3. convection-microwave oven as claimed in claim 2 is characterized in that: described container cavity (33) is columnar structured or truncated cone-shaped structure.
4. convection-microwave oven as claimed in claim 1, it is characterized in that: the pilot hole diameter of described copper axle reaches 0.1-0.5mm than rotating shaft diameter.
5. convection-microwave oven as claimed in claim 1, it is characterized in that: described teabowl with a cover is bowl structure.
6. such as claim 1 or 5 described convection-microwave oven, it is characterized in that: offer a plurality of circles or oval louvre on the described teabowl with a cover sidewall.
7. convection-microwave oven as claimed in claim 1, it is characterized in that: described rubber base is made by high-temperature resistant rubber.
8. such as claim 2,3,5 or 7 described convection-microwave oven, it is characterized in that: described teabowl with a cover bottom center place is provided with locating hole, described rubber base comprise the afterbody that can embed matchingly described container cavity inside and can self-align hole in the cylindrical head of stretching out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110269361.2A CN102997295B (en) | 2011-09-13 | 2011-09-13 | Convection-microwave oven |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110269361.2A CN102997295B (en) | 2011-09-13 | 2011-09-13 | Convection-microwave oven |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102997295A true CN102997295A (en) | 2013-03-27 |
| CN102997295B CN102997295B (en) | 2016-07-06 |
Family
ID=47926201
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110269361.2A Expired - Fee Related CN102997295B (en) | 2011-09-13 | 2011-09-13 | Convection-microwave oven |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102997295B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5089679A (en) * | 1988-09-09 | 1992-02-18 | Microwave Ovens Limited | Microwave oven with stand-by mode |
| CN1517592A (en) * | 2003-01-09 | 2004-08-04 | ���ǵ�����ʽ���� | Wall microwave oven |
| CN1815087A (en) * | 2005-02-05 | 2006-08-09 | Lg电子株式会社 | Over-the-range (OTR) microwave oven |
| CN101210694A (en) * | 2006-12-28 | 2008-07-02 | 乐金电子(天津)电器有限公司 | Turbine fan positioning structure for ventilation hood type microwave furnace |
| CN101344269A (en) * | 2007-07-09 | 2009-01-14 | 三星电子株式会社 | Convection heating unit and heating cooker having the same |
| KR20110070470A (en) * | 2009-12-18 | 2011-06-24 | 엘지전자 주식회사 | Microwave oven having hood |
-
2011
- 2011-09-13 CN CN201110269361.2A patent/CN102997295B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5089679A (en) * | 1988-09-09 | 1992-02-18 | Microwave Ovens Limited | Microwave oven with stand-by mode |
| CN1517592A (en) * | 2003-01-09 | 2004-08-04 | ���ǵ�����ʽ���� | Wall microwave oven |
| CN1815087A (en) * | 2005-02-05 | 2006-08-09 | Lg电子株式会社 | Over-the-range (OTR) microwave oven |
| CN101210694A (en) * | 2006-12-28 | 2008-07-02 | 乐金电子(天津)电器有限公司 | Turbine fan positioning structure for ventilation hood type microwave furnace |
| CN101344269A (en) * | 2007-07-09 | 2009-01-14 | 三星电子株式会社 | Convection heating unit and heating cooker having the same |
| KR20110070470A (en) * | 2009-12-18 | 2011-06-24 | 엘지전자 주식회사 | Microwave oven having hood |
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| Publication number | Publication date |
|---|---|
| CN102997295B (en) | 2016-07-06 |
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| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
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Granted publication date: 20160706 Termination date: 20210913 |