CN204987124U - Microwave oven - Google Patents
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- CN204987124U CN204987124U CN201520639222.8U CN201520639222U CN204987124U CN 204987124 U CN204987124 U CN 204987124U CN 201520639222 U CN201520639222 U CN 201520639222U CN 204987124 U CN204987124 U CN 204987124U
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Abstract
The utility model discloses a microwave oven, microwave oven includes: the furnace body, inject the cavity in the furnace body, the microwave emission device, the microwave emission device is installed on the furnace body with to transmitting microwave in the cavity, inhale the ripples body, it establishes to inhale the ripples body in the cavity, temperature -detecting device, temperature -detecting device is used for detecting inhale the temperature of the ripples body, a controller, the controller with temperature -detecting device links to each other with the basis temperature -detecting device's detected value control the microwave emission device is closed. The utility model discloses a microwave oven can prevent accurate and sensitively that microwave oven is unloaded, microwave oven's simple structure, low in production cost.
Description
Technical field
The utility model belongs to field of kitchen electric appliance, in particular to a kind of micro-wave oven.
Background technology
Micro-wave oven No Load Start, easily causes microwave leakage, sparking, even the safety problem such as breaking out of fire.Pre-preventing idle load in the market, general operating weight inductor technology, namely after micro-wave oven starts microwave, by whether having load weight in weight sensor inspection body of heater, if do not have weight, then stops microwave running.But weight sensor is with high costs, complex structure, to production technology and management expectancy high, there is room for improvement.
Utility model content
The utility model is intended to solve one of technical problem in correlation technique at least to a certain extent.For this reason, the purpose of this utility model is to propose a kind of micro-wave oven that can detect zero load easily.
According to micro-wave oven of the present utility model, comprising: body of heater, in described body of heater, limit cavity; Microwave launcher, described microwave launcher is arranged on described body of heater with to launched microwave in described cavity; Wave-absorber, described wave-absorber is located in described cavity; Temperature-detecting device, described temperature-detecting device is for detecting the temperature of described wave-absorber; Controller, described controller is connected with described temperature-detecting device and cuts out to control described microwave launcher according to the detected value of described temperature-detecting device.
According to micro-wave oven of the present utility model, can accurately and delicately prevent micro-wave oven unloaded, the structure of micro-wave oven is simple, and production cost is low.
In addition, above-mentioned according to the utility model lateral stability lever system can also have following additional technical characteristic:
Alternatively, as △ T1 >=△ T, described controller controls described microwave launcher and cuts out, wherein △ T1=T2-T1, the initial temperature value of the described wave-absorber that described temperature-detecting device detects when T1 is the unlatching of described micro-wave oven, T2 is the temperature value of the described wave-absorber that after the first scheduled time t1 opened by described micro-wave oven, described temperature-detecting device detects, △ T0 is the first preset temperature value.
Alternatively, when described micro-wave oven load and △ T2 >=△ T0 ' time, described controller controls described microwave launcher and cuts out, wherein △ T2=T3-T2 ', the initial temperature value of the described wave-absorber that T2 ' detects for described temperature-detecting device when described micro-wave oven is opened, T3 is the temperature value of the described wave-absorber that after the second scheduled time t2 opened by described micro-wave oven, described temperature-detecting device detects, △ T0 ' is the second preset temperature value.
Alternatively, as △ T1 < △ T0 and △ T2 >=△ T0 ' time, described controller controls described microwave launcher and cuts out, wherein △ T1=T2-T1, the initial temperature value of the described wave-absorber that described temperature-detecting device detects when T1 is the unlatching of described micro-wave oven, T2 is the temperature value of the described wave-absorber that after the first scheduled time t1 opened by described micro-wave oven, described temperature-detecting device detects, △ T0 is the first preset temperature value, △ T2=T3-T2, T3 is the temperature value of the described wave-absorber that after the second scheduled time t2 opened by described micro-wave oven, described temperature-detecting device detects, △ T0 ' is the second preset temperature value, t2 > t1.
Alternatively, the contiguous described wave-absorber of described temperature-detecting device is arranged.
Alternatively, to be arranged on described cavity outer and stretch at least partially in described cavity for described temperature-detecting device.
Alternatively, described microwave launcher is located at outside described cavity.
Alternatively, described wave-absorber is located on the diapire of described cavity rotationally, and described temperature sensor is positioned at the below of described wave-absorber.
Alternatively, described microwave launcher is arranged on the sidewall of described cavity.
Alternatively, described temperature-detecting device is temperature sensor, and described microwave launcher is magnetron.
Accompanying drawing explanation
Fig. 1 is the structural representation (being mounted with culinary art thing) of the micro-wave oven according to the utility model embodiment;
Fig. 2 is the structural representation (zero load) of the micro-wave oven according to the utility model embodiment;
Fig. 3 is the explosive view of the micro-wave oven according to the utility model embodiment;
Fig. 4 is the temperature of wave-absorber according to the utility model embodiment and the open-interval graph of a relation of micro-wave oven;
Fig. 5 is the preventing idle load flow chart of the micro-wave oven according to embodiment of the present utility model;
Fig. 6 is the anti-dry flow chart of the micro-wave oven according to embodiment of the present utility model;
Fig. 7 is preventing idle load according to the micro-wave oven of embodiment of the present utility model and anti-dry flow chart.
Reference numeral:
Micro-wave oven 100,
Body of heater 110, microwave launcher 130, waveguide 140, wave-absorber 150, temperature-detecting device 170, controller 190,
Culinary art thing 200,
Cavity I.
Detailed description of the invention
Be described below in detail embodiment of the present utility model, the example of described embodiment is shown in the drawings.Be exemplary below by the embodiment be described with reference to the drawings, be intended to for explaining the utility model, and can not be interpreted as restriction of the present utility model.
Below with reference to the accompanying drawings and describe the utility model in detail in conjunction with the embodiments.
As shown in figs 1 to 6, micro-wave oven 100 comprises body of heater 110, microwave launcher 130, wave-absorber 150, temperature-detecting device 170 and controller 190.
Wherein, limit cavity I in body of heater 110, cavity I is for holding culinary art thing 200.Microwave launcher 130 is arranged on to launched microwave in cavity I on body of heater 110, and culinary art thing 200 absorbs microwave to be heated.Wave-absorber 150 is located in cavity I, and the microwave that wave-absorber 150 can absorb microwave launcher 130 transmitting makes the temperature of self improve, and transfers heat to culinary art thing 200 by heat transfer or heat radiation.
Temperature-detecting device 170 is for detecting the temperature of wave-absorber 150, controller 190 is connected with temperature-detecting device 170 and cuts out to control microwave launcher 130 according to the detected value of temperature-detecting device 170, in other words, the temperature signal of the wave-absorber 150 detected is passed to controller 190 by temperature-detecting device 170, according to this temperature value, controller 190 judges whether that needing to close microwave launcher 130 stops heating.
Be understandable that, wave-absorber 150 more easily absorbs the microwave that microwave launcher 130 launches and heats up, and the amount positive correlation of microwave that the ascensional range of the temperature of wave-absorber 150 and wave-absorber 150 absorb.As illustrated by the arrows in fig. 1, when filling culinary art thing 200 in the cavity I of micro-wave oven 100, a part for the microwave that microwave launcher 130 is launched is cooked thing 200 and is absorbed, and another part is absorbed by wave-absorber 150, and now the temperature of wave-absorber 150 rises slower; As denoted by the arrows in fig. 2, when micro-wave oven 100 is unloaded, the microwave that microwave launcher 130 is launched is absorbed by wave-absorber 150 substantially entirely, and now the temperature of wave-absorber 150 rises very fast; Thus, can judge that whether micro-wave oven 100 is unloaded by detecting the temperature ascensional range of wave-absorber 150 in setting-up time.
The microwave more easily absorbing microwave launcher 130 transmitting due to wave-absorber 150 heats up, the variations in temperature of wave-absorber 150 is very sensitive, according to the micro-wave oven 100 of the utility model embodiment, judge that whether micro-wave oven 100 is unloaded by the temperature value detecting wave-absorber 150, judged result is accurate and sensitive, and the structure of micro-wave oven 100 is simple, production cost is low.
In optional embodiments more of the present utility model, as depicted in figs. 1 and 2, microwave launcher 130 can be located at outside cavity I.Thus, microwave launcher 130 can be prevented to be infected with culinary art thing 200 in cavity I.
Particularly, as depicted in figs. 1 and 2, microwave launcher 130 can be arranged on the sidewall of cavity I, is beneficial to Microwave emission and enters cavity I.
Further, as shown in Figure 3, the transmitting terminal of microwave launcher 130 can be provided with waveguide 140, and microwave can be guided thus to enter cavity I, the microwave preventing microwave launcher 130 from launching is leaked by body of heater 110, and security and the efficiency of heating surface of micro-wave oven 100 are all optimized.
Alternatively, microwave launcher 130 can be magnetron.
In optional embodiments more of the present utility model, as shown in Figure 1-Figure 3, wave-absorber 150 is located on the diapire of cavity I rotationally, culinary art thing 200 is suitable for being placed on wave-absorber 150, wave-absorber 150 can by heat conduction to culinary art thing 200 after absorbing microwave intensification, and wave-absorber 150 can make when rotating each several part of wave-absorber 150 and culinary art thing 200 absorb microwave equably, the temperature of each several part of wave-absorber 150 and culinary art thing 200 is more balanced.
As shown in Figure 1-Figure 3, temperature sensor can be positioned at the below of wave-absorber 150, and further, temperature-detecting device 170 can be close to the temperature that wave-absorber 150 arranges accurately to detect wave-absorber 150.
Particularly, temperature-detecting device 170 can be arranged on outside cavity I, and temperature-detecting device 170 stretch in cavity I at least partially, this part stretching into cavity I of temperature-detecting device 170 can be close to wave-absorber 150 and be arranged.
Alternatively, temperature-detecting device 170 can be temperature sensor.
As depicted in figs. 1 and 2, when micro-wave oven 100 is unloaded, only have the microwave that wave-absorber 150 absorbs separately in cavity I, that is, as shown in Figure 4, when micro-wave oven 100 is unloaded, the temperature of wave-absorber 150 rises very fast.
According to the preventing idle load principle of the micro-wave oven 100 of the utility model embodiment as shown in Figure 4, curve S 1 is that micro-wave oven 100 holds the temperature ascensional range △ T of wave-absorber 150 and the relation of micro-wave oven 100 opening time t when cooking thing 200, the temperature ascensional range △ T of wave-absorber 150 and the relation of micro-wave oven 100 opening time t when curve S 0 is micro-wave oven 100 zero load, during micro-wave oven 100 opening time t1, when micro-wave oven is unloaded, the temperature ascensional range of wave-absorber 150 is △ T0, when micro-wave oven 100 holds culinary art thing 200, the temperature ascensional range of wave-absorber 150 is △ T1.
The preventing idle load workflow of the micro-wave oven 100 according to the utility model embodiment is described below in detail:
As shown in Figure 5, as △ T1 >=△ T0, controller 190 controls microwave launcher 130 and cuts out, wherein △ T1=T2-T1, T1 is the initial temperature value of micro-wave oven 100 wave-absorber 150 that temperature-detecting device 170 detects when opening, T2 is the temperature value of the wave-absorber 150 that after the first scheduled time t1 opened by micro-wave oven 100, temperature-detecting device 170 detects, △ T0 is the first preset temperature value.
In other words, when micro-wave oven 100 is opened, the initial temperature value that temperature sensor detects wave-absorber 150 is T1, and this temperature information is passed to controller 190; After the first scheduled time t1 opened by micro-wave oven 100, the temperature value of the wave-absorber 150 that temperature-detecting device 170 detects is T2, and this temperature information is passed to controller 190; The difference △ T1 of T2 and T1 is the intensification value of wave-absorber 150 in time t1, this difference and the first preset temperature value △ T0 compare by controller 190, if △ T1 >=△ is T0, then controller 190 judges that micro-wave oven 100 is unloaded, close microwave launcher 130, micro-wave oven 100 is out of service.
Micro-wave oven 100 dry combustion method can also be prevented according to the micro-wave oven 100 of the utility model embodiment.
As shown in Figure 6, when the load of described micro-wave oven 100 and △ T2 >=△ T0 ' time, described controller 190 controls described microwave launcher 130 and cuts out, wherein △ T2=T3-T2 ', the initial temperature value of the described wave-absorber 150 that T2 ' detects for temperature-detecting device 170 described when described micro-wave oven 100 is opened, T3 is the temperature value of the described wave-absorber 150 that after the second scheduled time t2 opened by described micro-wave oven 100, described temperature-detecting device 170 detects, △ T0 ' is the second preset temperature value.
Be understandable that, when micro-wave oven 100 dry combustion method (the such as moisture of cooking in thing 200 is dried), the specific heat capacity of culinary art thing 200 diminishes, most of microwave that microwave launcher 130 is launched all is absorbed by wave-absorber 150, and culinary art thing 200 can only absorb a small amount of heat from wave-absorber 150, now the rate of rise in temperature of wave-absorber 150 is very fast, can judge micro-wave oven 100 whether dry combustion method by detecting the temperature ascensional range of wave-absorber 150 in setting-up time.
In other words, when micro-wave oven 100 load, i.e., when being contained with culinary art thing 200 in the cavity I of micro-wave oven 100, the initial temperature value that temperature sensor detects wave-absorber 150 is T2 ', and this temperature information is passed to controller 190; After the second scheduled time t2 opened by micro-wave oven 100, the temperature value of the wave-absorber 150 that temperature-detecting device 170 detects is T3, and this temperature information is passed to controller 190; The difference △ T2 of T3 and T2 ' is the intensification value of wave-absorber 150 in time t2, this difference and the second preset temperature value △ T0 ' compare by controller 190, if △ T2 >=△ is T0 ', then controller 190 judges micro-wave oven 100 dry combustion method, close microwave launcher 130, micro-wave oven 100 is out of service.
Anti-dry according to the micro-wave oven 100 of the utility model embodiment can combine with preventing idle load.
As △ T1 < △ T0 and △ T2 >=△ T0 ' time, described controller controls described microwave launcher and cuts out, wherein △ T1=T2-T1, the initial temperature value of the described wave-absorber that described temperature-detecting device detects when T1 is the unlatching of described micro-wave oven, T2 is the temperature value of the described wave-absorber that after the first scheduled time t1 opened by described micro-wave oven, described temperature-detecting device detects, △ T0 is the first preset temperature value, △ T2=T3-T2, T3 is the temperature value of the described wave-absorber that after the second scheduled time t2 opened by described micro-wave oven, described temperature-detecting device detects, △ T0 ' is the second preset temperature value, t2 > t1.
As shown in Figure 7, first according to the preventing idle load workflow of micro-wave oven 100, if △ T1 < △ is T0, then controller 190 judges to fill culinary art thing 200 in micro-wave oven 100, then according to the anti-dry workflow of micro-wave oven 100, judge micro-wave oven 100 whether dry combustion method, now temperature sensor detects the initial temperature value of wave-absorber 150 is T2, i.e. △ T2=T3-T2, then judge the relation of △ T2 and △ T0 '.
Particularly, when micro-wave oven 100 is opened, the initial temperature value that temperature sensor detects wave-absorber 150 is T1, and this temperature information is passed to controller 190, after the first scheduled time t1 opened by micro-wave oven 100, the temperature value of the wave-absorber 150 that temperature-detecting device 170 detects is T2, and this temperature information is passed to controller 190, the difference △ T1 of T2 and T1 is the intensification value of wave-absorber 150 in time t1, this difference and the first preset temperature value △ T0 compare by controller 190, if △ T1 >=△ is T0, then controller 190 judges that micro-wave oven 100 is unloaded, if △ T1 < △ is T0, then controller 190 judges to fill culinary art thing 200 in micro-wave oven 100, when △ T1 < △ T0, micro-wave oven 100 works on, after the second scheduled time t2 opened by micro-wave oven 100, the temperature value of the wave-absorber 150 that temperature-detecting device 170 detects is T3, and this temperature information is passed to controller 190, the difference △ T2 of T3 and T2 is the intensification value of wave-absorber 150 in time t2-t1, this difference and the second preset temperature value △ T0 ' compare by controller 190, if △ T2 >=△ is T0 ', then controller 190 judges the empty dry combustion method of micro-wave oven 100, close microwave launcher 130, micro-wave oven 100 is out of service.
Wherein, for the different menu of the micro-wave oven of different model or the micro-wave oven of same model, can by the concrete numerical value of test setting t1, t2, △ T0 and △ T0 '.
According to the micro-wave oven 100 of the utility model embodiment, judge the whether unloaded and dry combustion method of micro-wave oven 100 by detecting the temperature value of wave-absorber 150, judged result is accurate and sensitive, and the structure of micro-wave oven 100 is simple, and production cost is low.
In description of the present utility model, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " top ", " end " " interior ", orientation or the position relationship of the instruction such as " outward " are based on orientation shown in the drawings or position relationship, only the utility model and simplified characterization for convenience of description, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as restriction of the present utility model.
In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance or imply the quantity indicating indicated technical characteristic.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise at least one this feature.In description of the present utility model, the implication of " multiple " is at least two, such as two, three etc., unless otherwise expressly limited specifically.
In the utility model, unless otherwise clearly defined and limited, the term such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or integral; Can be mechanical connection, also can be electrical connection or each other can communication; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals or the interaction relationship of two elements, unless otherwise clear and definite restriction.For the ordinary skill in the art, the concrete meaning of above-mentioned term in the utility model can be understood as the case may be.
In the utility model, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score can be that the first and second features directly contact, or the first and second features are by intermediary mediate contact.And, fisrt feature second feature " on ", " top " and " above " but fisrt feature directly over second feature or oblique upper, or only represent that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " below " and " below " can be fisrt feature immediately below second feature or tiltedly below, or only represent that fisrt feature level height is less than second feature.
In the description of this description, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present utility model or example.In this manual, to the schematic representation of above-mentioned term not must for be identical embodiment or example.And the specific features of description, structure, material or feature can combine in one or more embodiment in office or example in an appropriate manner.In addition, when not conflicting, the feature of the different embodiment described in this description or example and different embodiment or example can carry out combining and combining by those skilled in the art.
Although illustrate and described embodiment of the present utility model above, be understandable that, above-described embodiment is exemplary, can not be interpreted as restriction of the present utility model, those of ordinary skill in the art can change above-described embodiment, revises, replace and modification in scope of the present utility model.
Claims (10)
1. a micro-wave oven, is characterized in that, comprising:
Body of heater, limits cavity in described body of heater;
Microwave launcher, described microwave launcher is arranged on described body of heater with to launched microwave in described cavity;
Wave-absorber, described wave-absorber is located in described cavity;
Temperature-detecting device, described temperature-detecting device is for detecting the temperature of described wave-absorber;
Controller, described controller is connected with described temperature-detecting device and cuts out to control described microwave launcher according to the detected value of described temperature-detecting device.
2. micro-wave oven according to claim 1, it is characterized in that, as △ T1 >=△ T0, described controller controls described microwave launcher and cuts out, wherein △ T1=T2-T1, the initial temperature value of the described wave-absorber that described temperature-detecting device detects when T1 is the unlatching of described micro-wave oven, T2 is the temperature value of the described wave-absorber that after the first scheduled time t1 opened by described micro-wave oven, described temperature-detecting device detects, △ T0 is the first preset temperature value.
3. micro-wave oven according to claim 1, it is characterized in that, when described micro-wave oven load and △ T2 >=△ T0 ' time, described controller controls described microwave launcher and cuts out, wherein △ T2=T3-T2 ', the initial temperature value of the described wave-absorber that T2 ' detects for described temperature-detecting device when described micro-wave oven is opened, T3 is the temperature value of the described wave-absorber that after the second scheduled time t2 opened by described micro-wave oven, described temperature-detecting device detects, △ T0 ' is the second preset temperature value.
4. micro-wave oven according to claim 1, is characterized in that, as △ T1 < △ T0 and △ T2 >=△ T0 ' time, described controller control described microwave launcher close,
Wherein △ T1=T2-T1, the initial temperature value of the described wave-absorber that described temperature-detecting device detects when T1 is the unlatching of described micro-wave oven, T2 is the temperature value of the described wave-absorber that after the first scheduled time t1 opened by described micro-wave oven, described temperature-detecting device detects, △ T0 is the first preset temperature value
△ T2=T3-T2, T3 are the temperature value of the described wave-absorber that after the second scheduled time t2 opened by described micro-wave oven, described temperature-detecting device detects, △ T0 ' is the second preset temperature value, t2 > t1.
5. the micro-wave oven according to any one of claim 1-4, is characterized in that, the contiguous described wave-absorber of described temperature-detecting device is arranged.
6. micro-wave oven according to claim 5, is characterized in that, it is outer and stretch at least partially in described cavity that described temperature-detecting device is arranged on described cavity.
7. the micro-wave oven according to any one of claim 1-4, is characterized in that, described microwave launcher is located at outside described cavity.
8. the micro-wave oven according to any one of claim 1-4, is characterized in that, described wave-absorber is located on the diapire of described cavity rotationally, and described temperature-detecting device is positioned at the below of described wave-absorber.
9. micro-wave oven according to claim 3, is characterized in that, described microwave launcher is arranged on the sidewall of described cavity.
10. the micro-wave oven according to any one of claim 1-4, is characterized in that, described temperature-detecting device is temperature sensor, and described microwave launcher is magnetron.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520639222.8U CN204987124U (en) | 2015-08-21 | 2015-08-21 | Microwave oven |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520639222.8U CN204987124U (en) | 2015-08-21 | 2015-08-21 | Microwave oven |
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| CN204987124U true CN204987124U (en) | 2016-01-20 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105114994A (en) * | 2015-08-21 | 2015-12-02 | 广东美的厨房电器制造有限公司 | Microwave oven |
| CN108709204A (en) * | 2018-06-12 | 2018-10-26 | 上海纯米电子科技有限公司 | A kind of empty pot detection method of electromagnetic oven |
| CN109028179A (en) * | 2018-05-23 | 2018-12-18 | 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 |
-
2015
- 2015-08-21 CN CN201520639222.8U patent/CN204987124U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105114994A (en) * | 2015-08-21 | 2015-12-02 | 广东美的厨房电器制造有限公司 | Microwave oven |
| 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 |
| CN109028179A (en) * | 2018-05-23 | 2018-12-18 | 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 |
| 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 |
| CN108709204A (en) * | 2018-06-12 | 2018-10-26 | 上海纯米电子科技有限公司 | A kind of empty pot detection method of electromagnetic oven |
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