CN1704662A - Microwave oven and control method thereof - Google Patents
Microwave oven and control method thereof Download PDFInfo
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- CN1704662A CN1704662A CN 200410019419 CN200410019419A CN1704662A CN 1704662 A CN1704662 A CN 1704662A CN 200410019419 CN200410019419 CN 200410019419 CN 200410019419 A CN200410019419 A CN 200410019419A CN 1704662 A CN1704662 A CN 1704662A
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Abstract
This invention discloses a microwave oven and its controlling method. The microwave oven comprises body, chamber, convection heater, and the auxiliary heating part set in the chamber corresponding to the convection heater, used for transporting high-heat air to the cooking chamber. The controlling method comprises the following steps: a) choosing convection heating mode, connecting the heater and fan motor to the power, then the high-heat air will enter the cooking chamber; b) when the temperature in the cooking chamber reach to the setting temperature, circuit breaking to the convection heater, meanwhile, connecting the heater to the power; c) when the resistance welding time reach to the setting time, circuit breaking the heater, meanwhile, connecting the convection heater to the power again; d) in the designed cooking time, repeating the step b and step c. Said method can heat food individually from the left and right, and can prevent the convection heater overheat.
Description
Technical field
The present invention relates to a kind of micro-wave oven and control method thereof.
Background technology
In general, ventilating hood-type microwave oven is installed in the top of gas range, except the various functions with micro-wave oven, also has air-cleaning function, and hot gas that gas range is produced and smog and peculiar smell discharging are to outdoor.
Fig. 1 is the positive view of existing ventilating hood-type microwave oven; Fig. 2 is along the cutaway view of I-I line among Fig. 1; Fig. 3 is along the cutaway view of II-II line among Fig. 1.
As Fig. 1, Fig. 2 and shown in Figure 3, existing ventilating hood-type microwave oven comprises: form cavity 20, the centrifugal fan 31 that is used for exhaust, the exhaust motor 30 that is used for driving centrifugal fan 31 that the body 10 of outward appearance, the inside that is formed on body 10 constitute cooking room, magnetron 41 and the high-tension transformer 42 that is used for producing microwave.
Be formed with two the 1st air entries 11 that are used for ventilating on the bottom surface of described body 10; The top of a side of described body 10 is formed with the 2nd air entry 12, and the upper space that is used in body 10 sucks air; The rear portion of the end face of described body 10 (or the top at the back side of body 10) is formed with exhaust outlet 13, and the air that flows through centrifugal fan 31 discharges by exhaust outlet 13.
Described exhaust motor 30 is arranged on the back angle of going up of body 10 inner spaces, is used for driving centrifugal fan 31, makes by suction inlet on the body 10 11 and suction inlet 12 leaked-in airs, flow through centrifugal fan 31 after, discharge by exhaust outlet 13.
Described magnetron 41 and high-tension transformer 42 are installed in electric control chamber inside respectively.
Recently, in order to improve the cooking performance of ventilating hood-type microwave oven, be provided with convection heater 51 in the side (contiguous electric control chamber one side) of cavity 20.
The position that is provided with at described convection heater 51 is formed with through hole 21; For the hot gas that convection heater 51 is produced is transported in the cooking room, in casing 50, be provided with convection fan 52 and fan electromotor 53; The effect of casing 50 is protection convection fan 52 and fan electromotor 53.
When above-mentioned micro-wave oven utilized microwave to cook, the hot gas that utilizes convection heater 51 to produce heated the surface of food, thereby the internal and external parts of food is evenly heated, and allowed the user obtain satisfied cooking effect.The course of work to above-mentioned existing ventilating hood-type microwave oven is illustrated below:
At first, food is put into cavity 20 inside, promptly put into cooking room, connect the power switch of micro-wave oven then, magnetron 41 begins to produce microwave, and makes on the food of microwave irradiation in cooking room.
Meanwhile, convection heater 51 begins heating, and the high temperature hot gas of generation flows in the cooking room.
Be placed on the food in the cooking room, under microwave action, heated on the one hand, on the other hand the high temperature hot gas heating that is produced by convection heater 51 by molecular friction heat.
In said process, the thermostat (not shown) continues the temperature in the test chamber 20, and the duty of control exhaust motor 30.
For example, under the effect of convection heater 51, when the temperature in the cavity 20 too rose, described thermostat was started working exhaust motor 30, drove centrifugal fan 31 rotations, sucked body 10 air outside, and the temperature in the cavity 20 is descended to some extent.
Specifically, when exhaust motor 30 work, drive centrifugal fan 31 rotations, make extraneous air pass through the 2nd air entry 12 at the rear portion of the 1st air entry 11 on body 10 bottom surfaces and body 10 end faces, flow into body 10 inside, the centrifugal fan 31 of flowing through discharges by exhaust outlet 13 then.
By the air in the 2nd air entry 12 inflow bodies 10 internal upper part spaces, flow through when being provided with the casing 50 of convection heater 51, play thermolysis.
But, there is following shortcoming in above-mentioned existing ventilating hood-type microwave oven: because convection heater 51 is arranged on a side of cooking room, in cooking room, carry high temperature hot gas, so when the lateral dimension of cooking chamber for microwave oven was big, high temperature hot gas only acted on the food position near convection heater 51.
Certainly, can improve the power of convection heater 51, make the high temperature hot gas of its generation be enough to act on the food position away from convection heater 51.But at this moment the position near convection heater 51 might be occurred by burned phenomenon by superheated on the food.
In addition, consider that convection heater 51 is set in the electric control chamber, if the fever time of convection heater 51 is long, the then hot gas damage that just might be produced by convection heater 51 of other electric components in the electric control chamber, the fan electromotor 53 that particularly is used for driving convection fan 52 might be damaged by high temperature hot gas.
Therefore, when above-mentioned existing ventilating hood-type microwave oven is worked, when the temperature in temperature in the cooking room or the casing 50 rises to design temperature, must disconnect the power supply of convection heater 51 within a certain period of time, reclose power supply then, disconnect so repeatedly, making operation, cause the cooking time to be extended.
Summary of the invention
Technical problem to be solved by this invention is, overcomes the shortcoming of above-mentioned existing ventilating hood-type microwave oven, the also micro-wave oven of heat food equably when providing a kind of lateral dimension when cooking room big.
Another object of the present invention provides a kind of control method of microwave oven, so that improve the cooking efficiency to food.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is: micro-wave oven of the present invention comprises: body, cavity and convection heater; Described body forms the outward appearance of micro-wave oven, forms cooking room in the side space of its inside, and opposite side forms electric control chamber in the inner space; Described cavity is arranged in the side space of body interior, forms cooking room; Described cavity is formed with the through hole that is communicated with cooking room on the side adjacent with electric control chamber; The position that described cavity forms through hole is provided with convection heater, carries high temperature hot gas by the through hole on the cavity to cooking room; On described cavity with convection heater position in opposite directions, position is set, be provided with auxiliary heating portion, auxiliary heating portion can carry high temperature hot gas in cooking room.
Described auxiliary heating portion is arranged on the end face of cavity, carries high temperature hot gas to cooking room.
Described auxiliary heating portion comprises an above heater and reflecting plate; The space of heater is partly encircled and protected to described reflecting plate, and the inner surface of reflecting plate is made by material that can reflection ray, on the food of the heat reflection that heater can be produced in the cooking room.
Described heater is the barbecue heater.
Control method of microwave oven of the present invention comprises:
The 1st stage: when the cooking method of selection was the convection heater mode, convection heater and fan electromotor were connected power supply, and convection heater begins heating, and the high temperature hot gas of generation enters cooking room, and carries out convection current in cooking room;
The 2nd stage: under the effect of the high temperature hot gas that convection heater produces, when the temperature in the cooking room rises to design temperature, the convection heater outage, heater is connected power supply simultaneously;
The 3rd stage: after reaching setting-up time the conduction time of heater, the heater outage, convection heater recloses power supply simultaneously;
The 4th stage: in the cooking time of setting, repeat above-mentioned the 2nd stage and the 3rd stage successively.
The invention has the beneficial effects as follows:
The 1st: a side of cooking chamber for microwave oven of the present invention is provided with convection heater, and opposite side is provided with the barbecue heater.Therefore can heat food respectively from the left and right sides of cooking room, thereby can heat equably whole food.
The 2nd: method for controlling microwave oven of the present invention is to make the alternately heating successively of convection heater and barbecue heater, thereby both can carry out work under the nominal current conditions satisfying, and can prevent the phenomenon of the undue heating of convection heater again.
Description of drawings
Fig. 1 is the positive view of existing ventilating hood-type microwave oven;
Fig. 2 is along the cutaway view of I-I line among Fig. 1;
Fig. 3 is along the cutaway view of II-II line among Fig. 1;
Fig. 4 is the positive view of the concrete embodiment of micro-wave oven of the present invention;
Fig. 5 is along the cutaway view of III-III line among Fig. 4;
Fig. 6 is the flow chart of method for controlling microwave oven of the present invention.
Among the figure:
100: body 200: cavity
510: convection heater 600: auxiliary heating portion
610: heater 620: reflecting plate
The specific embodiment
Below in conjunction with the drawings and specific embodiments the present invention is described in further detail:
Fig. 4 is the positive view of the concrete embodiment of micro-wave oven of the present invention; Fig. 5 is along the cutaway view of III-III line among Fig. 4.As shown in Figure 4 and Figure 5, micro-wave oven of the present invention comprises: body 100, cavity 200, convection heater 510, convection fan 520, fan electromotor 530 and auxiliary heating portion 600.
Described body 100 forms the outward appearance of micro-wave oven, forms cooking room in the side space of its inside, and opposite side forms electric control chamber in the inner space; The upper back of described body 100 is provided with centrifugal fan 310 and the exhaust motor 300 that is used for sucking and discharging air.
Described cavity 200 is arranged in the side space of body 100 inside, forms cooking room.
Described cavity 200 is formed with the through hole 210 that is communicated with cooking room on the side adjacent with electric control chamber.
The position that described cavity 200 forms through hole 210 is provided with convection heater 510.
Described convection heater 510 energising back heatings, and the through hole 210 that passes through on the cavity 200 is carried high temperature hot gas to cooking room.
The effect of described auxiliary heating portion 600 is to utilize the indoor food of high temperature hot gas cooking with convection heater 510.
On cavity 200 with convection heater 510 position in opposite directions, position is set, be provided with auxiliary heating portion 600, auxiliary heating portion 600 can carry high temperature hot gas in cooking room.
Described auxiliary heating portion 600 is arranged on the end face of cavity 200, and to carry high temperature hot gas to be advisable to cooking room, this is because there is remaining space in the top of cavity 200, and can heat the top of whole food so easily.
Described auxiliary heating portion 600 comprises an above heater 610 and reflecting plate 620; The space of heater 610 is encircled and protected to described reflecting plate 620 parts, and the inner surface of reflecting plate 610 is made by material that can reflection ray, on the food of the heat reflection that heater 610 can be produced in the cooking room.
Corresponding to the position of auxiliary heating portion 600, be formed with several manholes 220 on the end face of cavity 200, the effect of these manholes 220 is both can prevent microwave irradiation to heater 610, and the hot gas that heater 610 is produced enters in the cooking room.
Described heater 610 is a grill heater.
In the space that is provided with convection heater 510, be provided with temperature sensor 700, the effect of temperature sensor 700 is the temperature that detect above-mentioned space.
Described temperature sensor 700 can be made of electro-hot regulator, also can be made of thermostat or relay; Electro-hot regulator is actually a resistor that changes according to the variation of temperature resistance value.
In addition, micro-wave oven of the present invention also comprises a microprocessor (not shown), and microprocessor is used for controlling the duty of convection heater 510, heater 610 and other electric components; Described microprocessor and temperature sensor 700 are connected by circuit, the temperature in convection heater space of living in be can confirm according to the signal that temperature sensor 700 provides, and exhaust motor 300 and fan electromotor 530 duties controlled selectively according to said temperature.
Described microprocessor also can be used as the common microprocessor of control ventilating hood-type microwave oven duty and uses.
In order to make convection heater 510 heat radiations,, also be provided with convection fan 520 and fan electromotor 530 at the position that is provided with of convection heater 510.
Described convection fan 520 also can be blown into the hot gas that convection heater 510 produces in the cooking room, makes hot gas in the inner generation of cooking room convection current.
Below with reference to flow chart shown in Figure 6, control method of microwave oven of the present invention is illustrated:
At first, promptly put into food in cavity 200 inside in cooking room, connect microwave oven supply power, microprocessor just makes magnetron 41 produce microwave, and meanwhile, convection heater 510 is switched on power supply, begins to produce high temperature hot gas (S110).
At this moment, the heater 610 of auxiliary heating portion 600 is in the state of deenergization.
Be placed on the food heated while under the molecular friction effect in the cooking room, also the high temperature hot gas heating that is produced by convection heater 510.
Certainly, also can only utilize the high temperature hot gas of convection heater 510 that food is heated.
Food is being carried out in the process of cooking, microprocessor is grasped variations in temperature situation (S120) by the temperature at temperature sensor 700 affirmation convection heaters 510 positions of living in.
Described microprocessor compares (S130) with the temperature of above-mentioned affirmation with the design temperature of importing in advance.
Described design temperature is meant, can not cause the temperature of convection heater 510 excessive heating, or the temperature when driving convection fan 520 work when excessive heating takes place, or can not damage the temperature of electric component.
When temperature that microprocessor is confirmed reaches design temperature, then disconnect the power supply of convection heater 510, and connect the power supply (S140) of heater 610 simultaneously.
Why not driving convection heater 510 and heater 610 simultaneously, is that then the current value of micro-wave oven might exceed the electric current permissible value because if convection heater 510 and heater 610 are generated heat simultaneously.
Therefore, described convection heater 510 and heater 610 do not carry out work simultaneously, but alternately carry out work.
After described heater 610 began heating, the hot gas of generation flowed in the cooking room by the through hole 220 on cavity 200 end faces; Simultaneously, the inner surface of reflecting plate 620 arrives cooking room inside with the heat reflection that heater 610 produces.
At this moment, be placed on the position of not heated by convection heater 510 on the food in the cooking room, by the hot gas heating that heater 610 produces, therefore, each position of food can be heated equably.
In addition, described heater 610 can not keep connecting the state of power supply always.
In setting-up time, make heater 610 connect power supply, disconnect the power supply of heater 610 then, reclose the power supply of convection heater 510.
When heater 610 begins to connect power supply, or during from convection heater 510 deenergizations, begin to carry out timing (S150).
Above-mentioned setting-up time can be the time that is fully dispelled the heat in convection heater 510 spaces of living in, or the time that can too do not generated heat of heater 610.
Certainly, the time of disconnection heater 610 power supplys also can be that benchmark is set with the temperature of heater 610.
Above-mentioned process of alternately powering to convection heater 510 and heater 610 can be sustained, and till the cooking time of setting finishes, when the cooking time of setting finishes, cuts off the power supply (S160) of convection heater 510 and heater 610 simultaneously.
Claims (5)
1. a micro-wave oven comprises: body, cavity and convection heater; Described body forms the outward appearance of micro-wave oven, forms cooking room in the side space of its inside, and opposite side forms electric control chamber in the inner space; Described cavity is arranged in the side space of body interior, forms cooking room; Described cavity is formed with the through hole that is communicated with cooking room on the side adjacent with electric control chamber; The position that described cavity forms through hole is provided with convection heater, carries high temperature hot gas by the through hole on the cavity to cooking room; It is characterized in that: described cavity (200) go up with convection heater (510) position in opposite directions, position is set, be provided with auxiliary heating portion (600), assist heating portion (600) can in cooking room, carry high temperature hot gas.
2. micro-wave oven according to claim 1 is characterized in that: described auxiliary heating portion (600) is arranged on the end face of cavity (200), carries high temperature hot gas to cooking room.
3. micro-wave oven according to claim 1 is characterized in that: described auxiliary heating portion (600) comprises an above heater (610) and reflecting plate (620); The space of heater (610) is encircled and protected to described reflecting plate (620) part, and the inner surface of reflecting plate (610) is made by material that can reflection ray, on the food of the heat reflection that heater (610) can be produced in the cooking room.
4. micro-wave oven according to claim 3 is characterized in that: described heater (610) is the barbecue heater.
5. control method of microwave oven according to claim 1 is characterized in that: comprising:
The 1st stage: when the cooking method of selection was the convection heater mode, convection heater (510) and fan electromotor (530) were connected power supply, and convection heater (510) begins heating, and the high temperature hot gas of generation enters cooking room, and carries out convection current in cooking room;
The 2nd stage: under the effect of the high temperature hot gas that convection heater (510) produces, when the temperature in the cooking room rises to design temperature, convection heater (510) outage, heater (610) is connected power supply simultaneously;
The 3rd stage: after reaching setting-up time the conduction time of heater (610), heater (610) outage, convection heater (510) recloses power supply simultaneously;
The 4th stage: in the cooking time of setting, repeat above-mentioned the 2nd stage and the 3rd stage successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100194198A CN100541007C (en) | 2004-05-27 | 2004-05-27 | Method for controlling microwave oven |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100194198A CN100541007C (en) | 2004-05-27 | 2004-05-27 | Method for controlling microwave oven |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1704662A true CN1704662A (en) | 2005-12-07 |
| CN100541007C CN100541007C (en) | 2009-09-16 |
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ID=35576779
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100194198A Expired - Fee Related CN100541007C (en) | 2004-05-27 | 2004-05-27 | Method for controlling microwave oven |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100541007C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102771523A (en) * | 2008-01-28 | 2012-11-14 | 杜克制造公司 | Convection oven |
-
2004
- 2004-05-27 CN CNB2004100194198A patent/CN100541007C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102771523A (en) * | 2008-01-28 | 2012-11-14 | 杜克制造公司 | Convection oven |
| CN102771523B (en) * | 2008-01-28 | 2015-04-22 | 杜克制造公司 | Convection oven |
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| Publication number | Publication date |
|---|---|
| CN100541007C (en) | 2009-09-16 |
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Granted publication date: 20090916 Termination date: 20140527 |