CN1924450A - Control method for preheating protection of microwave oven with temperature checking device - Google Patents
Control method for preheating protection of microwave oven with temperature checking device Download PDFInfo
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- CN1924450A CN1924450A CN 200510014936 CN200510014936A CN1924450A CN 1924450 A CN1924450 A CN 1924450A CN 200510014936 CN200510014936 CN 200510014936 CN 200510014936 A CN200510014936 A CN 200510014936A CN 1924450 A CN1924450 A CN 1924450A
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- wave oven
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Abstract
This invention relates to one microwave overheat protection and control method with temperature test device, which comprises the following steps: pre-heating microwave; reading cook chamber temperature; judging cook chamber temperature; controlling according to judge results, wherein, the said cook temperature judging step as: firstly judging whether the chamber temperature is larger than set one, if not microwave normally runs; if yes then judging cook temperature is over set temperature. If yes, then stopping microwave running; if not then let microwave normally run.
Description
Technical field
The present invention relates to a kind of micro-wave oven.Particularly relate to a kind of temperature that can in time detect in the body of heater, judge that accurately micro-wave oven is whether in the control method of the preheating protection of microwave oven with temperature-detecting device that normally carries out preheating operation.
Background technology
Generally, micro-wave oven is that (per second is about 2,450MHz) is heating source, the intermolecular frictional heat that is taken place by the molecules align that confuses food and arrange the utensil of food with high frequency waves.
Fig. 1 is the decomposing schematic representation of the general structure of hot air convection type ripple stove, and Fig. 2 is the planar structure schematic diagram of the internal structure of Fig. 1.
As shown in Figure 1, existing hot air convection type ripple stove comprises: by front panel 11 and rear board 13 and the cooking cavity assembly 10 that constitutes; Cooking cavity 12 in the 10 inner sides formation of cooking cavity assembly; Be formed on cooking cavity assembly 10 inner opposite sides, be provided with the electric control chamber 14 of various electric components; Be arranged on the shell 20 in the outside of cooking cavity assembly 10.
The a plurality of intercommunicating pore 13a of formation that are communicated with cooking cavity 12 inner spaces to the central part greatly of plate 13 in the back, in the back the back of plate 13 be provided with and rear board 13 between have the convection cell 40 in any space.
In the space that convection cell 40 is had, be provided with heater 41, and the convection fan 42 that makes the hot gas convection current in cooking cavity 12 that takes place from heater 41 is installed, and being equipped with in the back of convection cell 40 in order to drive convection fan 42, and the motor 43 that is connected with the axle of convection fan 42.
Be installed with the convection cell cover 50 of parcel convection cell 40 and motor 43 in the back on the plate 13, convection cell 40 and motor 43 are protected from the outside.
The back of convection cell cover 50 is formed with a plurality of air suction inlet 50a that can flow into air from the outside.
Comprise the magnetron 14a that generates microwave by installation on the electric control chamber 14, supply with high-tension high-tension transformer 14b to magnetron 14a, and the fan electromotor 14d of the blowing fan 14c of the various electric components of cooling electric control chamber 14 inside and driving blowing fan 14c.
But; existing hot air convection type ripple stove does not have the preheating protection measure; just in body of heater, there are not to be provided with the device or the parts that the information of cooking cavity temperature in time can be fed back to control circuit; when micro-wave oven carries out preheating; because causing, some improper factors fail in the normal time, to reach preheat temperature; control circuit is not also known, still controls micro-wave oven and proceeds preheating operation, thereby will cause the damage and the security incident of micro-wave oven.
Summary of the invention
Technical problem to be solved by this invention is, a kind of temperature that can in time detect in the body of heater is provided, and judges that accurately micro-wave oven is whether in the control method of the preheating protection of microwave oven with temperature-detecting device that normally carries out preheating operation.
The technical solution adopted in the present invention is: a kind of control method with preheating protection of microwave oven of temperature-detecting device includes as the next stage and finishes: the stage of micro-wave oven being carried out preheating; Read the stage of cooking cavity temperature; To cooking the stage that cavity temperature is judged; The stage of micro-wave oven being controlled according to judged result.
The described stage that cooking cavity temperature is judged is to judge in two steps, whether at first judges cooking cavity temperature less than the temperature of having set, if be not less than the temperature of having set, micro-wave oven normally moves; If less than the temperature of having set, judge again whether cooking cavity temperature is continuous in the temperature of setting in setting-up time.
The described stage of micro-wave oven being controlled according to judged result is if judged result is continuous in the temperature of setting in 2 minutes, then to stop the operation of micro-wave oven; If judged result is not continuous in the temperature of setting in setting-up time, then allow micro-wave oven normally move.
Control method with preheating protection of microwave oven of temperature-detecting device of the present invention; can in time detect the temperature in the body of heater; compare judgement by temperature with temperature in the cooking cavity and setting; and according to the result who relatively judges; in time the preheating operation of micro-wave oven is controlled; make micro-wave oven carry out normal preheating operation; effectively control and avoided when micro-wave oven carries out preheating; because of failing of causing of improper factor reached under the situation of preheat temperature in the normal time; micro-wave oven still continues operation, caused to the destruction of micro-wave oven with to the threat of personal safety.
Description of drawings
Fig. 1 is the decomposing schematic representation of the general structure of hot air convection type ripple stove;
Fig. 2 is the vertical view of the internal structure of Fig. 1;
Fig. 3 is the flow chart of cooling protection control method of the present invention.
Wherein:
10: cooking cavity assembly 11: front panel
12: cooking cavity 13: rear board
13a: intercommunicating pore 14: electric control chamber
14a: magnetron 14b: high-tension transformer
14c: blowing fan 14d: fan electromotor
20: shell 30: door
40: convection cell 41: heater
42: convection fan 43: motor
50: convection cell cover 50a: air suction inlet
The specific embodiment
Below, in conjunction with the accompanying drawings and specific embodiment, describe the control method with preheating protection of microwave oven of temperature-detecting device of the present invention in detail.
Control method with preheating protection of microwave oven of temperature-detecting device of the present invention; be that upside in the cooking cavity of as shown in Figure 1 and Figure 2 micro-wave oven is provided with temperature-detecting device or temperature detection part; as temperature sensor etc.; and it is connected with control circuit; control circuit can be learnt temperature in the cooking cavity by temperature sensor; and the temperature of learning judged, take concrete measure according to judged result to micro-wave oven control.
As shown in Figure 3, have the control method of the preheating protection of microwave oven of temperature-detecting device, include following steps and finish: S1. carries out preheating operation to micro-wave oven; S2. read cooking cavity temperature, promptly obtain temperature in the cooking cavity from being arranged on temperature-detecting device in the cooking cavity; S3. judge that cooking cavity temperature whether less than the temperature of having set, if cooking cavity temperature is not less than the temperature of having set, then enters S6, if cooking cavity temperature then enters S4 less than the temperature of having set; S4. judge whether cooking cavity temperature is continuous in the temperature of setting in setting-up time, if cooking cavity temperature is continuous in the temperature of setting in setting-up time, illustrate that micro-wave oven has been to reach failing in the normal time of occurring causing because of improper factor that micro-wave oven still continues operation under the situation of preheat temperature, at this moment enter S5, if cooking cavity temperature is not continuously less than the temperature of setting in setting-up time, illustrate that micro-wave oven is to be under the situation of normal warming up, then enters S6; S5. control circuit control micro-wave oven stops preheating operation, and demonstrates the low excessively information of micro-wave oven preheat temperature; S6. control circuit continuation control micro-wave oven normally moves.
Whether the time that embodiments of the invention set is to see in 2 minutes continuously less than the temperature of setting.
Control method with preheating protection of microwave oven of temperature-detecting device of the present invention; in control program, increased the preheating protection program; in the cooking cavity upper inside temperature sensor is set; micro-wave oven is being carried out in the process of preheating; utilize the temperature sensor principle very responsive, micro-wave oven is protected variations in temperature.Program as shown in Figure 3, in the micro-wave oven warm, if the temperature of temperature sensor feedback is continuously less than the temperature of setting in 2 minutes, show that then the body of heater preheat temperature is low excessively, preheating goes wrong, need stop the operation of micro-wave oven, in order to avoid occur that micro-wave oven still continues operation under the situation of preheat temperature because of failing of causing of improper factor reaches in the normal time, thus will cause the damage and the security incident of micro-wave oven.
For example design temperature is decided to be more than 100 ℃, when moving 2 minutes continuously at preheating method, control circuit learns that from temperature sensor cooking cavity temperature continuously less than 100 ℃, will demonstrate the low excessively information of preheat temperature by display unit, and stop the operation of micro-wave oven.
Claims (3)
1. the control method with preheating protection of microwave oven of temperature-detecting device is characterized in that, includes as the next stage to finish: the stage of micro-wave oven being carried out preheating; Read the stage of cooking cavity temperature; To cooking the stage that cavity temperature is judged; The stage of micro-wave oven being controlled according to judged result.
2. the control method with preheating protection of microwave oven of temperature-detecting device according to claim 1, it is characterized in that, the described stage that cooking cavity temperature is judged is to judge in two steps, judge that at first whether cooking cavity temperature is less than the temperature of having set, if be not less than the temperature of having set, micro-wave oven normally moves; If less than the temperature of having set, judge again whether cooking cavity temperature is continuous in the temperature of setting in setting-up time.
3. the control method with preheating protection of microwave oven of temperature-detecting device according to claim 1, it is characterized in that, the described stage of micro-wave oven being controlled according to judged result is, if judged result is continuous in the temperature of setting in setting-up time, then stop the operation of micro-wave oven; If judged result is not continuous in the temperature of setting in setting-up time, then allow micro-wave oven normally move.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510014936 CN1924450A (en) | 2005-08-31 | 2005-08-31 | Control method for preheating protection of microwave oven with temperature checking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510014936 CN1924450A (en) | 2005-08-31 | 2005-08-31 | Control method for preheating protection of microwave oven with temperature checking device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1924450A true CN1924450A (en) | 2007-03-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510014936 Pending CN1924450A (en) | 2005-08-31 | 2005-08-31 | Control method for preheating protection of microwave oven with temperature checking device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1924450A (en) |
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2005
- 2005-08-31 CN CN 200510014936 patent/CN1924450A/en active Pending
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| WD01 | Invention patent application deemed withdrawn after publication |