CN1888556A - Convection system of microwave oven - Google Patents
Convection system of microwave oven Download PDFInfo
- Publication number
- CN1888556A CN1888556A CNA200510013927XA CN200510013927A CN1888556A CN 1888556 A CN1888556 A CN 1888556A CN A200510013927X A CNA200510013927X A CN A200510013927XA CN 200510013927 A CN200510013927 A CN 200510013927A CN 1888556 A CN1888556 A CN 1888556A
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- culinary art
- convection
- air
- cavity
- convection current
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/64—Heating using microwaves
- H05B6/647—Aspects related to microwave heating combined with other heating techniques
- H05B6/6473—Aspects related to microwave heating combined with other heating techniques combined with convection heating
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- Electromagnetism (AREA)
- Electric Ovens (AREA)
Abstract
A convection system of a microwave oven comprises a central location on the side of the cooking cavity mounted a convection box, a suction part capable of making the air in the cooking cavity flow into the convection box and an exhaust part located at each angle on the side wall of the cooking cavity capable of making the heated hot air in the convection box flow back to the cooking cavity. Because of using the above structure, the invention can uniformly feed the hot air to each corner of the cooking cavity, so it can uniformly heat food and improve the cooking quality.
Description
Technical field
The present invention relates to a kind of micro-wave oven, particularly relate to being formed with the convection current case on each angle of a kind of left side wall of cooking cavity or right side wall and communicate, thereby can export the exhaust portion that heats the back air, hot-air can be offered equably the contracurrent system of the micro-wave oven of whole culinary art inside cavity thus.
Background technology
Usually, micro-wave oven is that a kind of microwave irradiation that utilizes magnetron to produce is being placed on its inner food, thus the electrical installation that food is cooked.Cook as single thermal source owing to initial micro-wave oven only adopts microwave, thereby it can't satisfy user's various culinary art requirements, therefore also be provided with another kind of heating source in the micro-wave oven of releasing on the market recently.This heating source comprises that the hot-air that heater is produced utilizes the mode of convection current to pass to the convection heater of culinary art inside cavity with heat food; Come the grill heater of cooking food with the radiation that utilizes heater to send.Micro-wave oven among the present invention is the micro-wave oven that is provided with convection heater.Fig. 1 is the prior art microwave oven stereogram of door opened state.As shown in Figure 1, the micro-wave oven 1 of this prior art is rectangular shape, and it comprises the shell 10 that constitutes external structure.The inside of shell 10 is provided with and is used for cooking food, and the open culinary art cavity 20 of front end.The enough fire doors 22 that rotates to a side of the front end utilizable energy of culinary art cavity 20 come selectivity to open and close, and its side then is provided with not shown electric control chamber.The inside of electric control chamber is equipped with the required various electric components of micro-wave oven running, and its place ahead then is equipped with the operation that can control micro-wave oven and the control panel of being made up of a plurality of buttons and display screen 24.The bottom surface of culinary art cavity 20 is provided with can place the rotating disk 26 for the treatment of cooking food.Rotate under the rotary tray motor that rotating disk 26 can unshownedly in the drawings be arranged on its underpart drives, thereby hot-air and microwave are offered food equably.In addition, the right side wall outside of culinary art cavity 20 is provided with convection current case 30.The space that convection current case 30 carries out convection current for the force air that can make culinary art cavity 20 inside, its inside is provided with convection fan 32 and convection heater 34, thereby can utilize advection heat to come the inside of heating cooking cavity 20.
Fig. 2 is the micro-wave oven convection current case internal structure stereogram of prior art.Fig. 3 is the microwave oven cooking cavity wall partial structurtes stereogram of prior art.As Fig. 2～shown in Figure 3, in order to form the space that can place convection fan 32 and convection heater 34, described convection current case 30 is for integral body is recessed to form, and its size is identical with the right side wall size of cooking cavity 20.Convection fan 32 can suck the air of culinary art cavity 20 inside and then discharge along centrifugal direction, and it roughly is positioned at the centre of convection current case 30.The periphery of convection fan 32 is provided with convection heater 34.Convection heater 34 has twined 1～2 circle along the exterior periphery of convection fan 32, and at this moment, sucking the air of then discharging along centrifugal direction by convection fan 32 is through the air after convection heater 34 heating that are arranged on convection fan 32 peripheries.In addition, in order to carry hot-air and on convection current case 30, to be provided with air guiding device 40 to the center position of culinary art cavity 20.Described air guiding device 40 comprises the 1st air guiding device the 42, the 2nd air guiding device 44 and the 3rd air guiding device of being made by the sheet material with certain-length 46.Wherein, the 1st air guiding device 42 is arranged on the center, upper end of convection current case 30 inside, and its installation direction slightly left.Be formed with the 2nd air guiding device 44 from the position of right side to the, upper end 1 air guiding device 42 of convection current case 30 inside.The 3rd air guiding device 46 then is arranged on the centre, left side of convection current case 30 inside, and along continuous straight runs extends and forms.In addition, can cover on culinary art cavity 20 right side walls of convection current case 30 front openings and convection fan 32 corresponding positions, promptly on the right side wall centre of culinary art cavity 20, be formed with the suction unit of forming by a plurality of holes 60, with culinary art cavity 20 right side walls of air guiding device 40 opposite positions on then be provided with exhaust portion 50.Described exhaust portion 50 comprises: from the right side wall upper right quarter of culinary art cavity 20 to the centre, upper end that the 1st air guiding device 42 is set, and 1st exhaust portion 52 that constitute transversely arranged by a plurality of holes; From the right side wall upper left quarter of culinary art cavity 20 to the 2nd exhaust portion 54 in the centre, left side that the 3rd air guiding device 46 is set; With from the right side wall lower left quarter of culinary art cavity 20 to the 3rd exhaust portion 56 at lower central position.The prior art micro-wave oven course of work with said structure is as follows: when connecting power supply, the magnetron of micro-wave oven 1 inside will produce microwave, and convection fan 32 and convection heater 34 are with the forced convertion hot-air, with the food of heating cooking cavity 20 inside simultaneously.During convection fan 32 runnings, the air of culinary art cavity 20 inside will enter into the centre of convection fan 32 by suction unit 60, flow to the exterior periphery of convection fan 32 then, after discharge after convection heater 34 heating.A part of hot-air of discharging will pass through the 1st exhaust portion 52 under the guiding of the 1st air guiding device 42 and the 2nd air guiding device 44 arranges to culinary art cavity 20, and below flowing on the left of the rear portion from the top, anterior right side of cooking cavity 20.Another part hot-air will be arranged to culinary art cavity 20 by the 2nd exhaust portion 54 under the guiding of the 3rd air guiding device 46, and flow to below, left side, front portion from the top, right side, rear portion of culinary art cavity 20.And remaining hot-air will be arranged to culinary art cavity 20 by the 3rd exhaust portion 56, and flows to front upper from the lower rear of culinary art cavity 20.Above-mentioned mobile hot-air will concentrate on the centre of culinary art cavity 20 and food will be heated.But, there is following shortcoming in prior art micro-wave oven with said structure: the micro-wave oven 1 of this prior art is that the hot-air that air guiding device 40 is sent is concentrated on the centre of culinary art cavity 20 with cooking food, but hot-air can't reach the outermost position of food when the volume of food is big, thereby this position the bad problems such as local heat that maybe can only carry out the centre of effect will occur cooking than the centre of food, will reduce cooking quality so undoubtedly.In addition, frame is set and carries out also can't heating when multilayer is cooked the food that is placed near culinary art cavity 20 edges when the inside of culinary art cavity 20.
Summary of the invention
In order to address the above problem, the object of the present invention is to provide to be formed with the convection current case on each angle of a kind of left side wall of cooking cavity or right side wall and communicate, thereby can export the exhaust portion that heats the back air, hot-air can be offered equably the contracurrent system of the micro-wave oven of whole culinary art inside cavity thus.
In order to achieve the above object, the contracurrent system of micro-wave oven provided by the invention is arranged on by the culinary art cavity with the inner space that is used for heat food; Be arranged on the outside of culinary art cavity left side wall or right side wall, can form the convection current case in forced convertion space; Be arranged on the inside of convection current case, and can make the hot-air of cooking inside cavity force the convection fan that carries out convection current; On the exterior periphery that is arranged on convection fan, in the micro-wave oven that the convection heater that the air of sending the culinary art inside cavity back to can be heated is formed, the contracurrent system of described micro-wave oven comprises: be positioned at the sidewall centre of the culinary art cavity that the convection current case is installed, and can make the suction unit of the air inflow convection current case inside of culinary art inside cavity; On each angle that is positioned at the cooking cavity body sidewall, and can make in the convection current case hot-air after the heating flow back to the exhaust portion of cooking cavity body inside.
Described convection current case is to form with the corresponding big dolly dimple of cooking cavity body sidewall.
Described convection current case is connected with exhaust portion.
The contracurrent system of micro-wave oven provided by the invention is to utilize the suction unit that is arranged on the cooking cavity body sidewall that the convection current case is installed to suck the air of culinary art inside cavity, and discharge forward by the exhaust portion that is positioned on each angle of cooking cavity body sidewall, therefore hot-air can be delivered to equably in each corner of culinary art cavity, thereby can in the culinary art cavity, be used frame and carry out the multilayer culinary art.Since once can cook more food, therefore user-friendly.In addition,, thereby also can not produce the phenomenon of hot-spot for the bigger food of volume because the hot-air sent can circulate equably in the inside of culinary art cavity, thus heat food and improve cooking quality equably.In addition, the inside of convection current case need not to be provided with the guiding thermal air current to air guiding device, not only can reduce the quantity and the assembling procedure of part like this, and can reduce production costs.
Description of drawings
Be elaborated below in conjunction with the contracurrent system of the drawings and specific embodiments to micro-wave oven provided by the invention.
Fig. 1 is the prior art microwave oven stereogram of door opened state.
Fig. 2 is the micro-wave oven convection current case internal structure stereogram of prior art.
Fig. 3 is the microwave oven cooking cavity wall partial structurtes stereogram of prior art.
Fig. 4 is for adopting the micro-wave oven forward structure schematic diagram of micro-wave oven contracurrent system provided by the invention.
Fig. 5 is for adopting the micro-wave oven convection current case internal structure stereogram of micro-wave oven contracurrent system provided by the invention.
Fig. 6 is for adopting the microwave oven cooking cavity wall partial structurtes stereogram of micro-wave oven contracurrent system provided by the invention.
Fig. 7 is hot air circulate view in the microwave oven cooking cavity that adopts micro-wave oven contracurrent system provided by the invention.
Critical piece label in the accompanying drawing:
100: culinary art cavity 120: front panel 140: rotating disk
160: rotary tray motor 200: convection current case 220: convection fan
240: convection heater 300: suction unit 400: exhaust portion
The specific embodiment
Fig. 4 is for adopting the micro-wave oven forward structure schematic diagram of micro-wave oven contracurrent system provided by the invention.As shown in Figure 4, the culinary art cavity 100 that is used for cooking food in the micro-wave oven provided by the invention is the open cuboid structure of front end, and its front end is provided with the front panel 120 that constitutes micro-wave oven front end face portion of external structure.The bottom surface of culinary art cavity 100 is provided with round turntable 140.Can place the food that need cook on the rotating disk 140, it can rotate under the rotary tray motor 160 that is arranged at the bottom drives, thereby hot-air and microwave are offered food equably.The right side wall outside of culinary art cavity 100 is provided with convection current case 200.The space that convection current case 200 carries out convection current for the force air that can make culinary art cavity 100 inside, it is close on the right side wall of culinary art cavity 100, and its inside is provided with convection fan 220 and convection heater 240.
Fig. 5 is for adopting the micro-wave oven convection current case internal structure stereogram of micro-wave oven contracurrent system provided by the invention.As shown in Figure 5, for the inside from culinary art cavity 100 successfully suck air and will heat after air successfully be discharged to the inside of cooking cavity 100, described convection current case 200 sizes are corresponding with the whole sidewall size of culinary art cavity 100, and its most of structure forms to side depression.In addition, on the right side wall that convection current case 200 is close to culinary art cavity 100, its external margin can adopt flange arrangement, and adopts screw or welding manner to be arranged on the right side wall of culinary art cavity 100.The dented space centre of convection current case 200 is provided with convection fan 220.Can suck air from center position during convection fan 220 rotations and then discharge, therefore should use centrifugal fan to centrifugal direction.The exterior periphery of convection fan 220 is provided with convection heater 240.Convection heater 240 is used to heat the air of being discharged to centrifugal direction by convection fan 220, and in order more effectively to heat, its exterior periphery along convection fan 220 has been twined 1～2 circle.
Fig. 6 is for adopting the microwave oven cooking cavity wall partial structurtes stereogram of micro-wave oven contracurrent system provided by the invention.As shown in Figure 6, be used to cook suction unit 300 and the exhaust portion 400 that cavity 100 inner airs are come in and gone out being provided with to be formed with on culinary art cavity 100 right side walls of convection current case 200.Described suction unit 300 is by the air of culinary art cavity 100 inside is flow through, thereby a plurality of holes that gather culinary art cavity 100 right side wall outsides constitute, its position is corresponding with the centre of convection fan 220, therefore, when convection fan 220 rotations, the air of culinary art cavity 100 inside will be drawn into the centre of convection current case 200 through suction unit 300.The air that described exhaust portion 400 is heated by the convection heater 240 that can make through convection current case 200 inside flows back to cooking cavity body 100 inside under the effect of convection fan 220 a plurality of holes constitute, and it is arranged on each angle of culinary art cavity 100 right side walls.That is, exhaust portion 400 is arranged on each angle of top, left side, top, right side, below, left side and below, right side of culinary art cavity 100 right side walls that convection current case 200 is installed, but the quantity in hole is different on each position.Because exhaust portion 400 is connected with convection current case 200, thereby the hot-air of discharging under the effect of convection fan 220 can all enter into the inside of culinary art cavity 100 by exhaust portion 400.
Below the micro-wave oven contracurrent system provided by the invention with said structure is described.Fig. 7 is hot air circulate view in the microwave oven cooking cavity that adopts micro-wave oven contracurrent system provided by the invention.As shown in Figure 7, when the food that will need to cook is put into the inside of culinary art cavity 100 and connected power supply, magnetron will produce microwave, thereby begin to cook.Meanwhile, convection fan 220 and convection heater 240 also will be connected power supply, and convection fan 220 begins to be rotated, the then evolution of heat of convection heater 240.To produce suction in the centre of convection current case 200 during convection fan 220 rotations, so that the air of culinary art cavity 100 inside flows to the direction of convection current case 200.Flow air at first flows into the inside of convection current case 200 by the suction unit 300 on culinary art cavity 100 right side walls, the centrifugal direction to convection fan 220 is discharged under the effect of convection fan 220 then.Owing to be wound with convection heater 240 on the exterior periphery of convection fan 220, so air will be heated during through convection heater 240, be expelled back into the inside of culinary art cavity 100 then by exhaust portion 400.Because exhaust portion 400 is arranged on each angle of culinary art cavity 100 right side walls, therefore the air of discharging by exhaust portion 400 will flow to the left side wall of culinary art cavity 100 forward.Promptly, the air of culinary art cavity 100 upper and lowers is to move to the left from the right side, the air in culinary art cavity 100 centres then is to move to the right from the left side, the air in centre will be drawn into the inside of convection current case 200 and will be heated by suction unit 300 then, get back to the upper and lower of culinary art cavity 100 at last by exhaust portion 400, circulate with this.Utilize the hot-air and the microwave of above-mentioned circulation just the food of culinary art cavity 100 inside can be heated equably.
Claims (3)
1, a kind of contracurrent system of micro-wave oven is arranged on by the culinary art cavity (100) with the inner space that is used for heat food; Be arranged on the outside of culinary art cavity (100) left side wall or right side wall, the convection current case (200) that can form the forced convertion space is arranged on the inside of convection current case (200), and can make the inner hot-air of culinary art cavity (100) force the convection fan (220) that carries out convection current; On the exterior periphery that is arranged on convection fan (220), in the micro-wave oven that the convection heater (240) that the air of sending culinary art cavity (100) inside back to can be heated is formed, it is characterized in that: the contracurrent system of described micro-wave oven comprises: be positioned at the sidewall centre of the culinary art cavity (100) that convection current case (200) is installed, and can make the inner air of culinary art cavity (100) flow into the inner suction unit (300) of convection current case (200); On each angle that is positioned at culinary art cavity (100) sidewall, and can make the hot-air after in convection current case (200), heating flow back to the inner exhaust portion (400) of cooking cavity body (100).
2, the contracurrent system of micro-wave oven according to claim 1 is characterized in that: described convection current case (200) is to form with the culinary art corresponding big dolly dimple of cavity (100) sidewall.
3, the contracurrent system of micro-wave oven according to claim 1 is characterized in that: described convection current case (200) is connected with exhaust portion (400).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200510013927XA CN1888556A (en) | 2005-06-27 | 2005-06-27 | Convection system of microwave oven |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200510013927XA CN1888556A (en) | 2005-06-27 | 2005-06-27 | Convection system of microwave oven |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1888556A true CN1888556A (en) | 2007-01-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA200510013927XA Pending CN1888556A (en) | 2005-06-27 | 2005-06-27 | Convection system of microwave oven |
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| Country | Link |
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| CN (1) | CN1888556A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102192540A (en) * | 2010-03-09 | 2011-09-21 | 乐金电子(天津)电器有限公司 | Hot air convection structure of microwave oven |
-
2005
- 2005-06-27 CN CNA200510013927XA patent/CN1888556A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102192540A (en) * | 2010-03-09 | 2011-09-21 | 乐金电子(天津)电器有限公司 | Hot air convection structure of microwave oven |
| CN102192540B (en) * | 2010-03-09 | 2015-04-29 | 乐金电子(天津)电器有限公司 | Hot air convection structure of microwave oven |
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