CN1888568A - Safety device for microwave oven - Google Patents
Safety device for microwave oven Download PDFInfo
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- CN1888568A CN1888568A CN 200510013939 CN200510013939A CN1888568A CN 1888568 A CN1888568 A CN 1888568A CN 200510013939 CN200510013939 CN 200510013939 CN 200510013939 A CN200510013939 A CN 200510013939A CN 1888568 A CN1888568 A CN 1888568A
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- load
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- wave oven
- mechanical device
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Abstract
A safety device of a microwave oven comprises a load of the microwave oven, a first switch for switching on-off the load power supply of the microwave oven, a load of a mechanical device, a second switch for switching on-off load power supply of the mechanical device, a feedback loop of the current the mechanical load uses and a microcomputer for controlling the first and second switches according to the data detected by the feedback loop. When the temperature control element in the present invention can't cut off the power supply for supplying the load of the mechanical device immediately, the microcomputer can cut off the power supply for supplying the load of the mechanical device via the signal detected by the above feedback loop to prevent the device from being damaged.
Description
Technical field
What the present invention relates to is micro-wave oven, particularly be the safety device of micro-wave oven.
Background technology
Micro-wave oven is the cookware that utilizes the heat of microwave or heater that food is heated.Present micro-wave oven not only has the function of the heat heat food of utilizing microwave or heater, also has multiple functions such as the function of baking bread and the function of making coffee.
Having the micro-wave oven of multiple function as mentioned above, is to utilize microcomputer to control when utilizing microwave or heater, but toast bread or be the control method of utilizing machinery when making coffee.
The micro-wave oven that has multiple function as mentioned above can not be checked the security of mechanical device, therefore brings the bad problems such as damage of product.
Summary of the invention
The objective of the invention is to overcome the deficiency of above-mentioned technology, provide a kind of the object of the invention to provide a kind of safety device.In this phenomenon of perception during of the micro-wave oven with multiple function in mechanical device generation anomaly, can be the safety device of the micro-wave oven of dump.
The technical scheme that solves the problems of the technologies described above is:
A kind of safety device of micro-wave oven comprises: the load of the micro-wave oven of culinary art control; Open and close first switch of the load power of micro-wave oven; The load of the mechanical device of mechanical system running; Open and close the second switch of mechanical load power supply; Detect the backfeed loop that mechanical load uses electric current; According to Data Control first switch of backfeed loop detection and the microcomputer of second switch.
The invention has the beneficial effects as follows: the safety device of micro-wave oven of the present invention as mentioned above, load during both can not use simultaneously at mechanical device load and micro-wave oven, when a function is being moved, cut off the startup of another function timely.
Even among the present invention temperature control unit can not the power supply of sever supply mechanical device load the time, microcomputer is by the detected signal of above-mentioned backfeed loop, the power supply of sever supply mechanical device load, the destruction of anti-locking apparatus, and raising user's security.
Description of drawings
Fig. 1 is the structure chart of the safety device of micro-wave oven of the present invention.
" explanation of drawing critical piece symbol "
20: the load 25,35,45,60 of micro-wave oven: switch
30: microcomputer 50: backfeed loop
The specific embodiment
In order to reach above-mentioned purpose, the safety device of micro-wave oven of the present invention comprises: the load 20 of the micro-wave oven of culinary art control; Open and close first switch of the load power of micro-wave oven; The load 45 of the mechanical device of mechanical system running; Open and close the second switch of mechanical load power supply; Detect the backfeed loop 50 that mechanical load uses electric current; According to Data Control first switch of backfeed loop detection and the microcomputer 30 of second switch.
Describe the safety device of micro-wave oven of the present invention in detail below in conjunction with accompanying drawing.
Fig. 1 is the structure chart of the safety device of micro-wave oven of the present invention.
As shown in the figure, the safety device of micro-wave oven of the present invention the voltage of external ac power source input 10, is incorporated into the two ends of micro-wave oven load 20, and micro-wave oven load 20 is driven.With relay switch 25, microcomputer 30 comes control relay switch 25 between ac power input end 10 and micro-wave oven load 20.The load 20 of micro-wave oven is the various devices of control culinary art, as magnetron, and heater, fan etc.
And the voltage of external ac power source input 10 is incorporated into mechanical device load 45 by switch 35.Mechanical device load 45 generally is to have the function of baking bread or the function of making coffee, toast bread heater or coffee machine etc. in the micro-wave oven.Switch 35 is the switches that open and close mechanical device load 45.
Include the temperature control unit 40 that bimetallic material or self-operated thermostatic controller constitute between above-mentioned ac power input end 10 and the mechanical device load 45.Temperature control unit 40 is overheated in order to prevent, when temperature is higher than design temperature above the time, the power supply of mechanical device load 45 will be cut off.
Between above-mentioned mechanical device load 45 and ac power input end 10, connect mechanical switch 60 by backfeed loop 50.The user is by mechanical switch 60 control mechanical device loads 45.
The state of above-mentioned backfeed loop 50 detection mechanism load 45 is sent to detected signal on the microcomputer 30.Microcomputer 30 opens and closes the switch 35 of mechanical device load 45 by detected signal controlling.
Above-mentioned backfeed loop 50 detects revolution electric current or running voltage from backfeed loop 50, the curtage signal that detects is sent on the microcomputer 30 again.Backfeed loop 50 is to utilize common backfeed loop.Microcomputer 30 is the curtage signal sets that mechanical device load 45 runs well the reference range signal, and relatively comes gauge tap 35 with detected signal with the reference range signal of setting.Backfeed loop 50 converts the DC signal to by parts such as transformers and is sent to microcomputer 30 from the mechanical device 45 detected AC signals of loading.
Describe the operation process of safety apparatus for micro-wave oven of the present invention below in detail.
For the micro-wave oven function of cooking is to finish by the control of microcomputer 30.That is, the user is in order to cook, and microcomputer 30 is powered to micro-wave oven load 20 according to the difference of function when pressing knob, at this moment the states that switch 25 is controlled to out.
When selected program was over, microcomputer 30 was closed switch 25, the power supply of sever supply micro-wave oven load 20.
The user opens mechanical switch 60 in order to start mechanical device load 45, and at this moment power supply supplies on the mechanical device load 45.Can carry out the function of baking bread or the function of making coffee in the time of 45 runnings of mechanical device load.
As mentioned above 45 runnings of mechanical device load the time, the current signal or the voltage signal of backfeed loop 50 detection mechanism load 45, and detected signal is input on the microcomputer 30.
When the signal that detects is in the scope that benchmark is set, keep the operation process of mechanical device load 45 from backfeed loop 50.
When the temperature of mechanical device load 45 rose to uniform temperature, the temperature control unit 40 that metal material or self-operated thermostatic controller constitute was closed, and the power supply of sever supply mechanical device load 45.
But mechanical device load 45 under superheat state in, temperature control unit 40 is timely during the power supply of sever supply mechanical device load 45, microcomputer 30 passes through backfeed loop 50 detected signals, the power supply of sever supply mechanical device load 45.
Like this, come gauge tap 35, can improve the security performance of mechanical device by microcomputer 30.
According to regional difference, some place can not be used the function and the cooking function of mechanical device simultaneously.That is, use the limitation reason of electric current, in the time of can only using a function among mechanical device load 45 and the micro-wave oven load 20, microcomputer 30 is according to the operating condition of backfeed loop 50 detection mechanism load 45.And the program that can select according to the user, detect the operating condition of micro-wave oven load.
Safety apparatus for micro-wave oven of the present invention is in the micro-wave oven with microwave food function and toast bread or the function of making coffee, can monitor the function of mechanical device and micro-wave oven in microcomputer.For above-mentioned purpose, in mechanical device of the present invention, connect backfeed loop, the value that detects in backfeed loop is input on the microcomputer.According to detected value, the power supply of microcomputer control mechanical device.
The above, it only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, though the present invention discloses as above with preferred embodiment, yet be not in order to limit the present invention, any those skilled in the art, in not breaking away from the technical solution of the present invention scope, when the technology contents that can utilize above-mentioned announcement is made a little change or is modified to the equivalent embodiment of equivalent variations, in every case be the content that does not break away from technical solution of the present invention, according to technical spirit of the present invention to any simple modification that above embodiment did, equivalent variations and modification all still belong in the scope of technical solution of the present invention.
Claims (1)
1. the safety device of a micro-wave oven is characterized in that, comprising: the load (20) of the micro-wave oven of culinary art control; Open and close first switch of the load power of micro-wave oven; The load (45) of the mechanical device of mechanical system running; Open and close the second switch of mechanical load power supply; Detect the backfeed loop (50) that mechanical load uses electric current; According to Data Control first switch of backfeed loop detection and the microcomputer (30) of second switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2005100139392A CN1888568B (en) | 2005-06-27 | 2005-06-27 | Safety device for microwave oven |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2005100139392A CN1888568B (en) | 2005-06-27 | 2005-06-27 | Safety device for microwave oven |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1888568A true CN1888568A (en) | 2007-01-03 |
| CN1888568B CN1888568B (en) | 2011-03-02 |
Family
ID=37577856
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2005100139392A Expired - Fee Related CN1888568B (en) | 2005-06-27 | 2005-06-27 | Safety device for microwave oven |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1888568B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008128396A1 (en) * | 2007-04-20 | 2008-10-30 | Mei De Jituan Ltd | A microwave oven with the bread making function |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1231706C (en) * | 2001-12-25 | 2005-12-14 | 乐金电子(天津)电器有限公司 | Overcurrent protection circuit for microwave oven |
| KR20040043021A (en) * | 2002-11-15 | 2004-05-22 | 삼성전자주식회사 | Microwave oven having a toaster |
-
2005
- 2005-06-27 CN CN2005100139392A patent/CN1888568B/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008128396A1 (en) * | 2007-04-20 | 2008-10-30 | Mei De Jituan Ltd | A microwave oven with the bread making function |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1888568B (en) | 2011-03-02 |
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| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110302 Termination date: 20140627 |
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| EXPY | Termination of patent right or utility model |