CN103542437B - A kind of preventing idle load micro-wave oven and detection method thereof - Google Patents
A kind of preventing idle load micro-wave oven and detection method thereof Download PDFInfo
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- CN103542437B CN103542437B CN201310528107.9A CN201310528107A CN103542437B CN 103542437 B CN103542437 B CN 103542437B CN 201310528107 A CN201310528107 A CN 201310528107A CN 103542437 B CN103542437 B CN 103542437B
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Abstract
The present invention relates to a kind of preventing idle load micro-wave oven and detection method thereof.Preventing idle load micro-wave oven comprises furnace chamber and is installed in a temperature-sensing device for furnace chamber inner top, and temperature-sensing device comprises metal probe and is located at the thermistor in metal probe.Metal probe is installed in furnace chamber inner top by fixed head, and metal probe and fixed head closely cooperate, and fixed head is fixedly connected with furnace chamber inner top by screw.Thermistor one end is installed in metal probe, and the other end is connected with control system.Metal probe is high temperature resistant material.High temperature resistant material is stainless steel alloy or kovar alloy.The detection method process that the present invention adopts is rigorous, achieves the accurate judgement to micro-wave oven operation process.Structure of the present invention is simple, the variations in temperature of unloaded furnace chamber inside can be detected at short notice, cut off the electricity supply in time, avoid the damage to microwave oven spare parts.
Description
Technical field
The present invention relates to micro-wave oven technical field, be specifically related to a kind of preventing idle load micro-wave oven and detection method thereof.
Background technology
Along with growth in the living standard, micro-wave oven is more and more applied in daily life.People, when use micro-wave oven, can forget that putting into food just starts unloaded micro-wave oven running often.Micro-wave oven works in the unloaded state and can cause the damage of parts, shortens micro-wave oven service life.Existing anti-micro-wave oven no load device arranges temperature controller at microwave oven cavity top, but current temperature controller reaction speed is slow, in time sensing temperature anomaly, damages as the parts such as magnetron, choke coil.
Summary of the invention
The object of the present invention is to provide a kind of anti-micro-wave oven no load device and detection method thereof, there is the micro-wave oven of this preventing idle load device, the Light Condition of micro-wave oven can be detected at short notice fast, and cut off the electricity supply in time, prevent microwave oven spare parts from damaging.
For achieving the above object, present invention employs following technical scheme: a kind of preventing idle load micro-wave oven, comprise furnace chamber and the temperature-sensing device being installed in furnace chamber inner top, described temperature-sensing device comprises metal probe and is installed in the thermistor in metal probe.
Described metal probe is installed in furnace chamber inner top by fixed head; Described fixed head is provided with fixing hole, and described metal probe is closely cooperated by fixing hole and fixed head; Described fixed head is fixedly connected with furnace chamber inner top by screw.
Described thermistor one end is installed in metal probe, and the other end is connected with master control borad.
Described metal probe is high temperature resistant material.
Described high temperature resistant material is stainless steel alloy.
Described high temperature resistant material is kovar alloy.
The present invention also comprises above-mentioned preventing idle load micro-wave oven detection method used, and this detection method comprises the following steps:
(1) the rate of temperature change critical value V that when arranging T1 effective detection time, micro-wave oven Light Condition, temperature-sensing device collects
twith cavity temperature critical value T2 in effective detection time;
(2) in effective detection time T1, the rate temperature change V of the temperature-sensing device collected is judged;
(3) if the rate of temperature change V of the temperature-sensing device collected is less than rate of temperature change critical value V
t, then can determine that micro-wave oven normally works, and after effective detection time, T1 terminated, master control borad actuation temperature sensing apparatus quits work;
If the rate of temperature change V of the temperature-sensing device collected is greater than rate of temperature change critical value V
t, then actuation temperature sensing apparatus continues collecting temperature, and the temperature value T3 collected by temperature-sensing device within effective detection time and cavity temperature critical value T2 compares;
(4) if the temperature value T3 that temperature-sensing device collects within effective detection time is more than or equal to cavity temperature critical value T2, then judge that micro-wave oven is Light Condition;
If the temperature value T3 that temperature-sensing device collects within effective detection time is less than cavity temperature critical value T2, then judge that micro-wave oven is Light Condition.
Described effective detection time, T1 was 30 seconds.
The rate of temperature change critical value V that during described micro-wave oven Light Condition, temperature-sensing device collects
tbe 3 DEG C/s.
In described effective detection time, cavity temperature critical value T2 is 120 DEG C.
Advantage of the present invention:
(1) first the temperature-sensing device that the present invention adopts adopts metal probe to carry out induction and the conduction of temperature, then the temperature information that thermistor reception metal probe transmits is utilized, by resistance value, information is uploaded to microwave oven control system in time, the data that then microwave oven control system detects according to thermistor carry out Light Condition judgement.Because what metal probe adopted is high temperature resistant, the extraordinary stainless steel alloy of heat conductivility or kovar alloy material, so the heat conducting time is very short, temperature information can be sent to thermistor in time.Because sensitivity of thermistor is higher, operating temperature range is wide, good stability, in time, exactly temperature information can be fed back to control system.
(2) the detection method process of the present invention's employing is rigorous, achieves the accurate judgement to micro-wave oven operation process.By considering the temperature variations in the furnace chamber under the various duty of micro-wave oven comprehensively, cavity temperature critical value in the rate of temperature change critical value that when arranging suitable effective detection time, micro-wave oven Light Condition, temperature-sensing device collects and effectively detection time, to the judgement that working station of microwave oven carries out promptly and accurately.
Structure of the present invention and detection method simply, can detect the variations in temperature of unloaded furnace chamber inside at short notice, cut off the electricity supply in time, avoid the damage to microwave oven spare parts.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the structural representation of temperature-sensing device of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention will be further described:
Embodiment 1
A kind of preventing idle load micro-wave oven as shown in Figure 1 and Figure 2, comprises furnace chamber 2 and the temperature-sensing device 1 being installed in furnace chamber 2 inner top, the thermistor 3 that temperature-sensing device 1 comprises metal probe 5 and is located in metal probe 5.Because the heat conductivity of metal probe is good, the variations in temperature in micro-wave oven furnace chamber can be sent to thermistor in time.Because sensitivity of thermistor is higher, operating temperature range is wide, good stability, in time, exactly temperature information can be fed back to microwave oven control system.By arranging corresponding Standard resistance range in microwave oven control system, can start in 30 seconds whether zero load judges to it to micro-wave oven.The resistance that thermistor feeds back if detect not in normal scope, then judges that micro-wave oven is unloaded, cuts off the electricity supply in time.Because temperature information feedback in time, so avoid the damage of the parts such as microwave oven magnetic, choke coil.
Further, metal probe 5 is installed in furnace chamber 2 inner top by fixed head 4, and metal probe 5 and fixed head 4 closely cooperate, and fixed head 4 is fixedly connected with furnace chamber 2 inner top by screw.Fixed head 4 is provided with installing hole and fixing hole.Metal probe 4 is closely cooperated by fixing hole and fixed head 4, and fixed head 4 is fixed to micro-wave oven furnace chamber 2 inner top by screw through installing hole.
Further, thermistor 3 one end is installed in metal probe 5, and the other end is connected with control system.Be filled with the reasonable material of heat conductivility between thermistor 3 and metal probe 5, can in time the temperature information that metal probe 5 collects be conducted rapidly to thermistor 3.
Further, metal probe 5 is high temperature resistant material.Preferably, high temperature resistant material is stainless steel alloy.Because what metal probe adopted is high temperature resistant, the extraordinary stainless steel alloy of heat conductivility, so the heat conducting time is very short, temperature information can be sent to thermistor in time.
The present invention also comprises the detection method that a kind of above-mentioned preventing idle load micro-wave oven adopts, and this detection method comprises the following steps:
(1) the rate of temperature change critical value V that when arranging T1 effective detection time, micro-wave oven Light Condition, temperature-sensing device collects
twith cavity temperature critical value T2 in effective detection time.Preferably, effective detection time, T1 was 30 seconds, the rate of temperature change critical value V that during micro-wave oven Light Condition, temperature-sensing device collects
tbe 3 DEG C/s.In effective detection time, cavity temperature critical value T2 is 120 DEG C.
Under the normal service condition of micro-wave oven, microwave from furnace chamber bottom emission and main heating position bottom food, in cavity and within the scope of the rate temperature change of top area generally within 2 DEG C/s.If in the non-loaded situation of micro-wave oven, microwave cannot be absorbed, can improve in the frequency of cavity internal reflection, thus it is too fast to make cavity inner temperature increase.The maloperation problem in people's use procedure can be solved by furnace chamber top installation temperature-sensing device.By T1 effective detection time is set to 30 seconds, both can, to the whether unloaded judgement carried out accurately and timely of micro-wave oven, can avoid again causing damage to microwave oven spare parts in testing process.By the rate of temperature change critical value V that temperature-sensing device during micro-wave oven Light Condition is collected
tbe set to 3 DEG C/s, the erroneous judgement to micro-wave oven operating condition can be avoided.By arranging cavity temperature critical value T2 in effective detection time, being consider that food placement location does not just cause the various situations such as unloaded erroneous judgement, avoiding the erroneous judgement to micro-wave oven operating condition, affecting the normal work of micro-wave oven.
(2) in effective detection time T1, the rate temperature change V of the temperature-sensing device collected is judged.
(3) if the rate of temperature change V of the temperature-sensing device collected is less than rate of temperature change critical value V
t, then can determine that micro-wave oven normally works, and after effective detection time, T1 terminated, master control borad actuation temperature sensing apparatus quits work.
After micro-wave oven to exceed T1 effective detection time the duration of runs, the variations in temperature in micro-wave oven furnace chamber is frequent, accurately furnace chamber temperature cannot be detected by temperature-sensing device.So after determining that micro-wave oven normally works and effectively detection time, T1 terminated, master control borad actuation temperature sensing apparatus quits work, and being to protect temperature-sensing device, extending its service life.
If the rate of temperature change V of the temperature-sensing device collected is greater than rate of temperature change critical value V
t, then actuation temperature sensing apparatus continues collecting temperature, and the temperature value T3 collected by temperature-sensing device within effective detection time and cavity temperature critical value T2 compares.
(4) if the temperature value T3 that temperature-sensing device collects within effective detection time is more than or equal to cavity temperature critical value T2, then judge that micro-wave oven is Light Condition.
Only having when the temperature value T3 that temperature-sensing device in effective detection time collects is more than or equal to cavity temperature critical value T2, just conclude that micro-wave oven is Light Condition, is to put the not just zero load erroneous judgement caused because of food.When food is put not positive time, the rate of temperature change V of the temperature-sensing device collected also likely is greater than rate of temperature change critical value V
t.This time then proceeds acquisition testing by temperature-sensing device to the temperature in furnace chamber, if in effective detection time T1, temperature does not reach cavity temperature critical value T2, illustrate that heat is by food absorption, do not arrive furnace chamber top, now would not judge that micro-wave oven is unloaded.
If the temperature value T3 that temperature-sensing device collects within effective detection time is less than cavity temperature critical value T2, then judge that micro-wave oven is Light Condition.
Embodiment 2
The high temperature resistant material that metal probe adopts is kovar alloy, and other are with embodiment 1.Because what metal probe adopted is high temperature resistant, the extraordinary stainless steel alloy of heat conductivility, so the heat conducting time is very short, temperature information can be sent to thermistor in time.
In sum, first the temperature-sensing device that the present invention adopts adopts metal probe to carry out induction and the conduction of temperature, then the temperature information that thermistor reception metal probe transmits is utilized, by resistance value, information is uploaded to microwave oven control system in time, the data that then microwave oven control system detects according to thermistor carry out Light Condition judgement.Because what metal probe adopted is high temperature resistant, the extraordinary stainless steel alloy of heat conductivility or kovar alloy material, so the heat conducting time is very short, temperature information can be sent to thermistor in time.Because sensitivity of thermistor is higher, operating temperature range is wide, good stability, in time, exactly temperature information can be fed back to control system.Structure of the present invention is simple, detection method is accurately rigorous, the variations in temperature of unloaded furnace chamber inside can be detected at short notice, cut off the electricity supply in time, avoid the damage to microwave oven spare parts.
Above-described embodiment is only be described the preferred embodiment of the present invention; not scope of the present invention is limited; under not departing from the present invention and designing the prerequisite of spirit; the various distortion that those of ordinary skill in the art make technical scheme of the present invention and improvement, all should fall in protection domain that claims of the present invention determines.
Claims (4)
1. a detection method for preventing idle load micro-wave oven, is characterized in that: preventing idle load micro-wave oven comprises furnace chamber, is arranged on temperature-sensing device and the master control borad of furnace chamber inner top; The detection method of described preventing idle load micro-wave oven comprises the following steps:
(1) the rate of temperature change critical value V that when arranging T1 effective detection time, micro-wave oven Light Condition, temperature-sensing device collects
twith cavity temperature critical value T2 in effective detection time;
(2) in effective detection time T1, the rate temperature change V of the temperature-sensing device collected is judged;
(3) if the rate of temperature change V of the temperature-sensing device collected is less than rate of temperature change critical value V
t, then can determine that micro-wave oven normally works, and after effective detection time, T1 terminated, master control borad actuation temperature sensing apparatus quits work;
If the rate of temperature change V of the temperature-sensing device collected is greater than rate of temperature change critical value V
t, then actuation temperature sensing apparatus continues collecting temperature, and the temperature value T3 collected by temperature-sensing device within effective detection time and cavity temperature critical value T2 compares;
(4) if the temperature value T3 that temperature-sensing device collects within effective detection time is more than or equal to cavity temperature critical value T2, then judge that micro-wave oven is Light Condition;
If the temperature value T3 that temperature-sensing device collects within effective detection time is less than cavity temperature critical value T2, then judge that micro-wave oven is non-Light Condition.
2. the detection method of a kind of preventing idle load micro-wave oven according to claim 1, is characterized in that: described effective detection time, T1 was 30 seconds.
3. the detection method of a kind of preventing idle load micro-wave oven according to claim 1, is characterized in that: the rate of temperature change critical value V that during described micro-wave oven Light Condition, temperature-sensing device collects
tbe 3 DEG C/s.
4. the detection method of a kind of preventing idle load micro-wave oven according to claim 1, is characterized in that: in described effective detection time, cavity temperature critical value T2 is 120 DEG C.
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105114994B (en) * | 2015-08-21 | 2017-10-27 | 广东美的厨房电器制造有限公司 | Micro-wave oven |
| CN109028179B (en) * | 2018-05-23 | 2019-11-22 | 广东格兰仕集团有限公司 | A kind of temperature sensing device and its adjusting method preventing micro-wave oven zero load |
| CN108709204B (en) * | 2018-06-12 | 2020-12-01 | 上海纯米电子科技有限公司 | Empty pot detection method for induction cooker |
| CN111059584A (en) * | 2019-12-31 | 2020-04-24 | 广东威特真空电子制造有限公司 | No-load detection method, microwave cooking apparatus, and computer-readable storage medium |
| CN112731988A (en) * | 2021-01-21 | 2021-04-30 | 广东盈科电子有限公司 | Temperature control method and control device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR200434177Y1 (en) * | 2006-09-29 | 2006-12-18 | 주식회사 제임스텍 | A temperature sensing device for microwave range |
| CN201993181U (en) * | 2011-03-24 | 2011-09-28 | 兴化市新兴电子有限公司 | Temperature sensor for microwave oven |
| CN102288321A (en) * | 2011-07-22 | 2011-12-21 | 肇庆爱晟电子科技有限公司 | Glass sintered and packaged metal probe quick response temperature sensor and manufacturing method thereof |
| CN102818301A (en) * | 2012-08-24 | 2012-12-12 | 美的集团有限公司 | Control method and device of microwave oven and microwave oven |
| CN203628738U (en) * | 2013-10-31 | 2014-06-04 | 合肥荣事达三洋电器股份有限公司 | Anti-no-load microwave furnace |
-
2013
- 2013-10-31 CN CN201310528107.9A patent/CN103542437B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR200434177Y1 (en) * | 2006-09-29 | 2006-12-18 | 주식회사 제임스텍 | A temperature sensing device for microwave range |
| CN201993181U (en) * | 2011-03-24 | 2011-09-28 | 兴化市新兴电子有限公司 | Temperature sensor for microwave oven |
| CN102288321A (en) * | 2011-07-22 | 2011-12-21 | 肇庆爱晟电子科技有限公司 | Glass sintered and packaged metal probe quick response temperature sensor and manufacturing method thereof |
| CN102818301A (en) * | 2012-08-24 | 2012-12-12 | 美的集团有限公司 | Control method and device of microwave oven and microwave oven |
| CN203628738U (en) * | 2013-10-31 | 2014-06-04 | 合肥荣事达三洋电器股份有限公司 | Anti-no-load microwave furnace |
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