CN1289860C - Cooling fan control method and device for microwave oven - Google Patents
Cooling fan control method and device for microwave oven Download PDFInfo
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- CN1289860C CN1289860C CN 02117772 CN02117772A CN1289860C CN 1289860 C CN1289860 C CN 1289860C CN 02117772 CN02117772 CN 02117772 CN 02117772 A CN02117772 A CN 02117772A CN 1289860 C CN1289860 C CN 1289860C
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- temperature
- cooling fan
- heater
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Abstract
The present invention relates to a method and an apparatus for controlling a cooling fan of a microwave oven, and particularly relates to a method and an apparatus for controlling a cooling fan of a microwave oven, which can utilize a thermal resistor to determine the cooling stopping time according to the temperature in a cooking chamber. In order to prevent the temperature of a reflection board from rising due to the residual heat of a heater after the cooking work is finished by the heater, the cooling action of the cooling fan is controlled so that the cooling fan only can be cooled when the temperature in the cooking chamber exceeds a specified value. Thereby, the temperature in the cooking chamber is detected by the thermal resistor used for detecting the temperature of the microwave oven for cooking food. Therefore, the method and the apparatus have the advantages that the power consumption increase caused by unnecessarily driving the cooling fan is avoided, and the optimal cooling effect is obtained.
Description
Technical field
The present invention relates to a kind of cooling fan control method and device (Device and controlmethod for cooling fan for microwave oven) of micro-wave oven, or rather, relate to a kind of cooling fan control method and device that utilizes thermistor to decide the micro-wave oven of cooling termination time according to the temperature in the cooking room.
Background technology
Magnetron can produce microwave as the heating source of micro-wave oven.If above-mentioned microwave is loaded on the food, then the molecule in the food will rotate or vibration with identical speed along with its vibration frequency.When this vibration or rotation take place, thereby the frictional heat of intermolecular generation can make the temperature of the food heat food that rises rapidly.
Except above-mentioned magnetron as the thermal source, in micro-wave oven, increased heater recently again as thermal source.The general halogen heaters that electric energy are converted into luminous energy that adopt of this heater more.
This multifunction microwave oven that has increased heater utilizes the function that magnetron produces except having, and also has some additional functions (roasting, baking, steam).Therefore micro-wave oven can be divided into by the convection micro-wave oven of hot air circulation effect according to mode of heating cooking food; The baking-type micro-wave oven that the photothermal effect of the heater by being installed in upper and lower faces is heated; The barbecue type microwave oven of heater only being installed in the above and being cooked by its photothermy etc.
Fig. 1 has shown the microwave oven structure that is provided with heater.
One side of the body 3 of common multifunction microwave oven is provided with the magnetron (not shown), is provided with heater 5 above the cooking room 1.Fig. 1 shows is provided with the structure of heater 5 above being exactly.On above-mentioned heater 5, reflecting plate 9 has been installed also, so that the heat that above-mentioned heater 5 is produced only transmits to the inside of cooking room 1.
In addition, behind the end of cooking that uses heater 5 to carry out, the temperature of heater reflecting plate 9 can sharply rise under the effect of the waste heat of heater, is provided with cooling air fan 7 in order to address this problem.
Behind the end of cooking that uses heater to carry out, for the temperature that solves expelling plate 9 because of the problem that the waste heat of heater rises, have the control that the micro-wave oven of structure as mentioned above will make above-mentioned cooling air fan 7 operation certain hours.
If cooling fan 7 begins action, air will flow by the direction shown in the arrow among Fig. 1 so, the problem that the temperature that so just can prevent aforesaid reflecting plate 9 rises because of the waste heat of heater.
But prior art to the control of cooling air fan is: cooking room 1 temperature inside when not considering to use heater to cook unconditionally makes cooling fan 7 operation certain hours after end of cooking.Even therefore very short when carrying out the cooking time, during problem that the temperature that reflecting plate do not take place during the cooking rises because of the waste heat of heater, micro-wave oven still unnecessarily drives cooling fan, thereby produces the problem that product can not be utilized effectively.
Summary of the invention
The object of the present invention is to provide a kind of after using gastronomical process that heater carried out to finish, according to the cooling fan control method and the device of the micro-wave oven of cooking room temperature inside decision cooling termination time.
In being provided with the micro-wave oven of heater, the cooling fan control method of micro-wave oven of the present invention to achieve these goals comprises: after using the end of cooking that heater carried out, and the temperature detection stage that the temperature in the cooking room is detected; When the temperature that detects at the said temperature detection-phase surpassed the 1st setting, for the temperature that the prevents reflecting plate waste heat because of heater rises, the cooling fan that drives cooling fan drove the stage; If the temperature that detects at the said temperature detection-phase has reached the 2nd setting, then stop the cooling fan stop phase of the action of cooling fan.
In being provided with the micro-wave oven of heater, the cooling fan control device of micro-wave oven of the present invention to achieve these goals comprises: be used to detect the temperature detection device that uses cooking room temperature inside behind the end of cooking that heater carried out; For the temperature that prevents reflecting plate behind the end of cooking that uses heater to carry out because of the waste heat of heater driven cooling fan that rises; When the temperature that detects at the said temperature detection-phase surpasses the 1st setting, for the temperature that the prevents reflecting plate waste heat because of heater rises, drive above-mentioned cooling fan, if the temperature that detects at the said temperature detection-phase has reached the 2nd setting, then stop the control device of the action of cooling fan.
The cooling fan control method of aforesaid micro-wave oven of the present invention and device can drive cooling fan with cooling reflecting plate and heater after the end of cooking that uses heater to carry out.And the thermistor that the present invention utilizes micro-wave oven to possess detects the cooking room temperature inside, and decides the cooling termination time by this temperature.Therefore have and to avoid rising, make cooling effect to reach the advantage of the best because of unnecessarily driving the power consumption that cooling fan causes.
Description of drawings
Fig. 1 is the profile of common microwave stove;
Fig. 2 is the control structure figure of cooling fan in micro-wave oven according to the present invention;
Fig. 3 is the control action flow chart of cooling fan in micro-wave oven according to the present invention.The critical piece figure elements:
1: cooking room 3: body
5: heater 7: cooling fan
9: reflecting plate 10: temperature-detecting device
15: signal input apparatus 20: control device
25: heater driving device 30: cooling fan drive device
The specific embodiment
Followingly micro-wave oven according to the present invention is described in detail with reference to accompanying drawing.
Fig. 2 is in micro-wave oven according to the present invention, is used for controlling the control structure figure of cooling fan.Structure for micro-wave oven among the present invention is illustrated with reference to Fig. 1.
One side of the body 3 of multifunction microwave oven is provided with the magnetron (not shown), is provided with heater 5 above the cooking room 1.What Fig. 1 showed is exactly the structure of top having heaters 5.And on above-mentioned heater 5, reflecting plate 9 has been installed.
Because the temperature of the end of cooking post-heater reflecting plate 9 that use heater 5 is carried out can rise because of the waste heat of heater, therefore be provided with cooling fan 7 in order to address this problem.Air is pressed the direction of arrow shown in Fig. 1 and is flowed along with the action of above-mentioned cooling fan 7.
In addition, though Fig. 1 does not show, in micro-wave oven, also be provided with the thermistor that is used to detect the cooking room internal temperature.Above-mentioned thermistor is the element of detected temperatures.Just shown thermistor in the temperature-detecting device 10 shown in Figure 2.In the present invention, said temperature checkout gear 10 is to be used for behind the end of cooking that uses heater to carry out, and detection cooking room temperature inside is used.The temperature that said temperature checkout gear 10 detects is used as the basis signal of the action of control cooling fan 7.
Mark 15 is signal input apparatus.Above-mentioned signal input apparatus 15 is arranged on the outside of micro-wave oven body 3, and the user can select cooking method by it.And above-mentioned chosen cooking method can pass to control device 20.
The temperature that said temperature checkout gear 10 detects and in above-mentioned signal input apparatus 15 chosen cooking method be imported into control device 20.The cooking method that above-mentioned control device 20 among the present invention is selected according to the user and correspondingly carry out the action that drives with driven thermal source.Can also be behind the end of cooking that uses heater to carry out, the temperature that detects with above-mentioned temperature-detecting device 10 is the cooling termination time of the above-mentioned cooling fan 7 of basis decision.
In addition, above-mentioned control device 20 can also be by controlling heater driving device 25, thereby make heater 5 actions, by cooling fan drive device 30 is controlled, thereby makes above-mentioned cooling fan 7 actions.
Illustrated with regard to the course of action that constitutes aforesaid micro-wave oven of the present invention below.
At first, the user puts into cooking room 1 with food, shuts after the door of cooking room, selects the cooking method of wanting on signal input apparatus 15.Above-mentioned selecteed cooking method is imported into control device 20, and the 20 pairs of selected cookings of user of control device are discerned.From internal memory, read the action control coding of selecteed mode then, and according to this coding control cooking action.
At this moment, when selected cooking method is to use heater 5 to cook, control device 20 will control heater drive unit 25 to drive heater 5.If need to drive cooling fan, drive cooling fan 7 thereby then control cooling fan drive device 30.These actions are that the action with the selected cooking is encoded to the basis and realizes.
By above-mentioned action, after the cooking of using heater 5 to be carried out is finished, the temperature that control device 20 detects according to thermistor judge whether needs to reflecting plate 9 coolings carry out.
Fig. 3 is the action flow chart that is used for controlling the cooling termination time of cooling fan among the present invention.
At first, if use the cooking that heater carried out to finish, thereby control device 20 stops to drive heater with regard to the power supply of control heater drive unit 25 cut-out heaters 5 so.And read the present temperature in cooking room 1 inside from temperature-detecting device 10.
If judge cooking room 1 temperature inside that reads in setting (about 425 degree) above (step 100), then control device 20 is made needs to drive cooling fan 7 to cool off the judgement of reflecting plate 9.
Next control device 20 control cooling fan drive devices 30 make cooling fan 7 actions (step 110), and at this moment press the direction of arrow shown in Figure 1 with the action of cooling fan 7 mobile for air.
If this action continued to carry out in the time of defined, so above-mentioned cooking room 1 temperature inside will descend.Control device 20 continues to monitor by 10 pairs of cooking room 1 temperature inside of said temperature checkout gear.If cooking room 1 temperature inside has reached setting (about 250 degree), then stop the action (step 120, step 130) of cooling fan 7.
Therefore, the cooling fan control method of micro-wave oven of the present invention is: after using the end of cooking that heater carried out, for the temperature that the prevents reflecting plate waste heat because of heater rises, the cooling action of control cooling fan is just cooled off when making its temperature in cooking room surpass setting.At this moment cooking room temperature inside is that the thermistor of the temperature when being used to detect micro-wave oven and cooking detects.
Therefore, basic fundamental theory of the present invention is: after using the end of cooking that heater carried out, the cooking room temperature inside that detects with thermistor is the basis decision cooling termination time, thereby heater and reflecting plate are cooled off.
Claims (2)
1, a kind of cooling fan control method that is provided with the micro-wave oven of heater comprises:
After using the end of cooking that heater carried out, the temperature detection stage that the temperature in the cooking room is detected;
When the temperature that detects at the said temperature detection-phase surpassed the 1st setting, for the temperature that the prevents reflecting plate waste heat because of heater rises, the cooling fan that drives cooling fan drove the stage;
If the temperature that detects at the said temperature detection-phase has reached the 2nd setting, then stop the cooling fan stop phase of the action of cooling fan.
2, a kind of cooling fan control device that is provided with the micro-wave oven of heater comprises:
Be used to detect the temperature detection device that uses cooking room temperature inside behind the end of cooking that heater carried out;
For the temperature that prevents reflecting plate behind the end of cooking that uses heater to carry out because of the waste heat of heater driven cooling fan that rises;
When the temperature that detects at the said temperature detection-phase surpasses the 1st setting, for the temperature that the prevents reflecting plate waste heat because of heater rises, drive above-mentioned cooling fan, if the temperature that detects at the said temperature detection-phase has reached the 2nd setting, then stop the control device of the action of cooling fan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02117772 CN1289860C (en) | 2002-05-17 | 2002-05-17 | Cooling fan control method and device for microwave oven |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02117772 CN1289860C (en) | 2002-05-17 | 2002-05-17 | Cooling fan control method and device for microwave oven |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1458450A CN1458450A (en) | 2003-11-26 |
| CN1289860C true CN1289860C (en) | 2006-12-13 |
Family
ID=29426663
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02117772 Expired - Fee Related CN1289860C (en) | 2002-05-17 | 2002-05-17 | Cooling fan control method and device for microwave oven |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1289860C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011013801A1 (en) * | 2009-07-30 | 2011-02-03 | シャープ株式会社 | Cooking device |
| CN103654453B (en) * | 2013-11-21 | 2019-04-12 | 东莞市海新金属科技有限公司 | Oven safety control protection system and oven with same |
| CN112273989B (en) * | 2020-09-30 | 2022-02-08 | 宁波方太厨具有限公司 | Working method of steam box and steam box applying method |
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2002
- 2002-05-17 CN CN 02117772 patent/CN1289860C/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN1458450A (en) | 2003-11-26 |
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