CN202734994U - Temperature sensor and induction cooker - Google Patents
Temperature sensor and induction cooker Download PDFInfo
- Publication number
- CN202734994U CN202734994U CN 201220333362 CN201220333362U CN202734994U CN 202734994 U CN202734994 U CN 202734994U CN 201220333362 CN201220333362 CN 201220333362 CN 201220333362 U CN201220333362 U CN 201220333362U CN 202734994 U CN202734994 U CN 202734994U
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- CN
- China
- Prior art keywords
- housing
- temperature sensor
- thermistor
- electromagnetic oven
- power model
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model discloses a temperature sensor and an induction cooker having the same. The temperature sensor comprises a housing and a thermistor packaged in the housing, wherein two electrodes of the thermistor extend outside the housing; the housing is provided with a first surface capable of applying to the external surface of a power module of the induction cooker; and the first surface makes surface contact with the external surface of the power module of the induction cooker. The temperature sensor of the utility model utilizes the surface of the housing and the external surface of the power module to form surface contact, thereby making the housing of the sensor tightly apply to the power module. The temperature of the power module can be rapidly conducted to the thermistor via the housing, thereby accelerating the responding speed during the temperature measuring process.
Description
Technical field
The utility model relates to the electromagnetic oven field, relates in particular to a kind of temperature sensor and electromagnetic oven.
Background technology
Electromagnetic oven is a kind of energy-efficient kitchen tools, it has broken traditional naked light cooking method, adopt the principle of heating of magnetic field induction electric current, by electronic circuit board ingredient generation alternating magnetic field, when being placed on the electromagnetic oven road surface with chalybeate pan bottom, pan namely cuts the alternation magnetic line of force and partly produces the electric current (being eddy current) of alternation in the pan bottom metal, thereby make the bottom of a pan heating, reach culinary purpose.
Too high and damage electromagnetic oven for fear of the heating-up temperature of pan, the commercial electromagnetic oven power module mainly adopts temperature sensor 1 as shown in Figure 1 to carry out thermometric at present, and all there is following shortcoming in its structure:
1. because the package casing of this sensor 1 is set to circularly, so can not be close to module when it is installed, and this sensor mainly conducts heat by the heat radiator that install the bottom, so test reaction is blunt.
2. the volume of this sensor 1 is large, and self-radiating is very fast when experiencing heat, thus large with the actual temperature error, affect the temperature survey degree of accuracy of sensor.
3. this sensor 1 adopts the PPS plastic casing to add the aluminium holder structure, so its insulating property are relatively poor, when especially installing in the forceful electric power zone, must reserve enough creepage distances.
Summary of the invention
Fundamental purpose of the present utility model provides a kind of temperature sensor, is intended to accelerate thermometric response speed.
The utility model provides a kind of temperature sensor, comprise housing and be encapsulated in the interior thermistor of housing, two electrodes of described thermistor extend outside the described housing, described housing has the first surface that can fit with the outside surface of the power model of electromagnetic oven, contacts for face between the power model outside surface of described first surface and electromagnetic oven.
Preferably, described housing also has the second surface that be arranged in parallel with described first surface, this second surface sets to the concave and forms an accepting groove adaptive with described thermistor, the body of described thermistor is housed in the described accepting groove fully, and two electrodes of thermistor extend outside the described thermistor housing; The gap of described thermistor and accepting groove also is provided with the epoxy resin layer of the described thermistor of encapsulation.
Preferably, described housing has the 3rd surface that connects first surface and second surface, and described the 3rd surface is provided with the mounting hole that runs through described housing.
Preferably, described mounting hole is U-shaped hole.
Preferably, described housing is rectangular parallelepiped, and long more than or equal to 8mm, is wider than or equals 5mm, and is high more than or equal to 4mm.
Preferably, the described wire that also comprises two electrodes of terminal and splicing ear and described thermistor.
Preferably, the material of described housing is brass.
The utility model also provides a kind of electromagnetic oven, comprise power model and the temperature sensor of fitting with described power model, described temperature sensor comprises housing and is encapsulated in the interior thermistor of housing, two electrodes of described thermistor extend outside the described housing, described housing has the first surface that can fit with the outside surface of the power model of electromagnetic oven, contacts for face between the power model outside surface of described first surface and electromagnetic oven.
Preferably, also comprise interior environment-development heat coil, outer shroud heat coil and be arranged on heat insulating belt between described interior environment-development heat coil and the outer shroud heat coil, described temperature sensor also is set on this heat insulating belt.
Preferably, heat conductive silica gel also is set between described temperature sensor and the power model.
The utility model is that face contacts by the surface with housing with the outside surface of power model, thereby so that the housing of this sensor can fit tightly with power model, the temperature of power model can conduct to rapidly thermistor by housing, the response speed when having accelerated temperature survey.
Description of drawings
Fig. 1 is the structural representation of temperature sensor of the temperature that be used for to measure the electromagnetic oven power module of prior art;
Fig. 2 is the mounting structure synoptic diagram of the power model of the utility model temperature sensor and electromagnetic oven;
Fig. 3 is the local enlarged diagram of A section among Fig. 2;
Fig. 4 is the structural representation of the utility model temperature sensor preferred embodiment;
Fig. 5 is the structural representation of another embodiment of the utility model temperature sensor;
Fig. 6 is the structural representation of the heater coil of the utility model electromagnetic oven.
The realization of the utility model purpose, functional characteristics and advantage are described further with reference to accompanying drawing in connection with embodiment.
Embodiment
Further specify the technical solution of the utility model below in conjunction with Figure of description and specific embodiment.Should be appreciated that specific embodiment described herein only in order to explaining the utility model, and be not used in restriction the utility model.
With reference to Fig. 2 to Fig. 4, Fig. 2 is the mounting structure synoptic diagram of the power model of the utility model temperature sensor and electromagnetic oven; Fig. 3 is the local enlarged diagram of A section among Fig. 2; Fig. 4 is the structural representation of the utility model temperature sensor preferred embodiment.This temperature sensor 100 is mainly used in the temperature detection in the electromagnetic oven, it comprises housing 10 and is encapsulated in thermistor 20 in the housing 10, two electrodes 21 of described thermistor 20 extend outside the described housing 10, described housing 10 have one with the first surface 101 of the binding face 201 adaptive applyings of the power model 200 of electromagnetic oven.
Particularly, this temperature sensor 100 is fitted with arriving power model 200, is used for measuring the temperature of electromagnetic oven power model 200.Therefore the first surface 101 of this housing 10 contacts with the outside surface formation face of the power model 200 of described electromagnetic oven, for example, the outside surface of the power model 200 of electromagnetic oven is the plane, then this first surface 101 also is the plane, can be so that housing 10 fits tightly with power model 200, the surface temperature of power model 200 can conduct to rapidly thermistor 20 by housing 10, the response speed when having accelerated temperature survey.Be understandable that in order to strengthen the heat-conducting effect of housing 10, the material of its housing 10 can be selected the better brass of heat-conducting effect, certainly, also can select the material of other good heat conduction effect.In addition, in order to accelerate response speed, can also be when temperature sensor 100 to be fitted with power model 200, between adds heat-conducting silicone grease 60.
Further, described housing 10 also has the second surface 102 that be arranged in parallel with described first surface 101, this second surface 102 sets to the concave and forms an accepting groove 11 adaptive with described thermistor 20, the body 22 of described thermistor 20 is housed in the described accepting groove 11 fully, and two electrodes 21 of thermistor 20 extend to outside the described housing 10; Thermistor 20 also arranges the epoxy resin layer 30 that encapsulates described thermistor 20 with the gap of accepting groove 11.
Because first surface 101 and the second surface 102 of housing 10 be arranged in parallel, and the body 22 of thermistor 20 is housed in the accepting groove 11 fully, therefore this thermistor 20 is oppositely arranged with first surface 101, the temperature of the described power model 200 of its energy Measurement accuracy, and thermometric response speed is accelerated.In addition, because this thermistor 20 is to encapsulate by epoxy resin, so that the insulation resistance between the shell of this temperature sensor 100 and lead-in wire reaches direct current 500V, more than the 100M Ω, dielectric voltage withstand exchanges 1500V, leakage current is less than 1mA, especially can install flexibly in the forceful electric power zone and is not afraid of puncture.
Further, above-mentioned housing 10 has the 3rd surface 103 that connects first surface 101 and second surface 102, and described the 3rd surface 103 is provided with the mounting hole 12 that runs through housing 10, and this mounting hole 12 can pass and be installed in the fixed orifice (not shown) on the heat sink 300 of electromagnetic oven for screw.The 3rd surface 103 also can be adaptive with the surface of heat sink 300, and for example the binding face of heat sink 300 is the plane, and then the 3rd surface 103 also is the plane, therefore so that temperature sensor 100 is more firm with fixing of heat sink 300.
Further, above-mentioned mounting hole 12 is U-shaped hole.By the mounting hole 12 of this U-shaped hole setting, so that this housing 10 can move in the scope of mounting hole 12 in the fixed position on the heat sink 300.Because fixed orifice and the distance between described power model 200 binding faces of heat sink 300 are certain, so when screw moves and be fixed in the fixed orifice of heat sink 300 by the direction of arrow shown in Figure 3, can change the applying degree between housing 10 and the power model 200.
Further, above-mentioned housing 10 is rectangular parallelepiped, and long more than or equal to 8mm, is wider than or equals 5mm, and is high more than or equal to 4mm.Because the specification limits of existing thermistor 20, the long L1(of its housing 10 is the length of first surface 101) minimum can be 8mm, wide L2(is the wide of the 3rd surface 103) minimum can be 5mm, and high L3(is the wide of first surface 101) minimum can be 4mm.Because the height of the copper base (being heating part) of power model 200 bottoms is about 4mm, so the housing 10 that this high L3 is 4mm can be close on the heating part of power model 200, not only improve thermometric precision, also accelerated thermometric response speed.Be understandable that, because the size of this housing 10 directly determines by the size of thermistor 20, so along with the change in size of thermistor 20, the size of this housing 10 is also with respective change.Because housing 10 volumes of this temperature sensor 100 are little, so the heat radiation of itself is also little, has further improved its thermometric precision.
Further, in conjunction with reference to Fig. 5, Fig. 5 is the structural representation of another embodiment of the utility model temperature sensor.On the basis of said temperature sensor embodiment, this temperature sensor 100 also comprises the wire 50 of two electrodes 21 of terminal 40 and splicing ear 40 and described thermistor 20.This wire 50 is preferably the wire of Teflon pipe, this thermistor 20 temperature sensors and the signal that produces is delivered to terminal 40 by two electrodes 21, wire 50, be delivered to again the control chip of electromagnetic oven by terminal 40, so that control chip is processed accordingly according to detected temperature.
The utility model also provides a kind of electromagnetic oven, and it comprises power model 200 and the temperature sensor 100 of fitting with described power model 200, and the concrete structure of described temperature sensor 100 can be with reference to noted earlier and with reference to Fig. 2 to Fig. 5.
Further, with reference to Fig. 6, Fig. 6 is the structural representation of the heater coil of the utility model electromagnetic oven.Above-mentioned electromagnetic oven also comprises interior environment-development heat coil 70, outer shroud heat coil 80 and is arranged on heat insulating belt 90 between described interior environment-development heat coil 70 and the outer shroud heat coil 80, also is provided with described temperature sensor 100 on this heat insulating belt 90.Because the structural design of this temperature sensor 100, thus so that the volume of this temperature sensor 100 can be very little, therefore so that the width of this isolation strip 90 can reduce more than the 10mm than the width of the isolation strip of prior art.Be understandable that, in order to accelerate the heat-conducting effect of isolation strip 90 and temperature sensor 80, can between isolation strip 90 and temperature sensor 80, heat conductive silica gel be set.
The above only is preferred embodiment of the present utility model; be not so limit its claim; every equivalent structure or equivalent flow process conversion that utilizes the utility model instructions and accompanying drawing content to do; directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present utility model.
Claims (10)
1. temperature sensor, it is characterized in that, comprise housing and be encapsulated in the interior thermistor of housing, two electrodes of described thermistor extend outside the described housing, described housing has the first surface that can fit with the power model outside surface of electromagnetic oven, contacts for face between the power model outside surface of described first surface and electromagnetic oven.
2. temperature sensor according to claim 1, it is characterized in that, described housing also has the second surface that be arranged in parallel with described first surface, this second surface sets to the concave and forms an accepting groove adaptive with described thermistor, the body of described thermistor is housed in the described accepting groove fully, and two electrodes of thermistor extend outside the described thermistor housing; The gap of described thermistor and accepting groove also is provided with the epoxy resin layer of the described thermistor of encapsulation.
3. temperature sensor according to claim 2 is characterized in that, described housing has the 3rd surface that connects first surface and second surface, and the 3rd surface is provided with the mounting hole that runs through described housing.
4. temperature sensor according to claim 3 is characterized in that, described mounting hole is U-shaped hole.
5. temperature sensor according to claim 1 is characterized in that, described housing is rectangular parallelepiped, and long more than or equal to 8mm, is wider than or equals 5mm, and is high more than or equal to 4mm.
6. temperature sensor according to claim 1 is characterized in that, the described wire that also comprises two electrodes of terminal and splicing ear and described thermistor.
7. each described temperature sensor is characterized in that according to claim 1-6, and the material of described housing is brass.
8. an electromagnetic oven is characterized in that, comprises that power model reaches such as each described temperature sensor of claim 1-7.
9. electromagnetic oven according to claim 8 is characterized in that, also comprises interior environment-development heat coil, outer shroud heat coil and is arranged on heat insulating belt between described interior environment-development heat coil and the outer shroud heat coil, and described temperature sensor also is set on this heat insulating belt.
10. electromagnetic oven according to claim 8 is characterized in that, heat conductive silica gel also is set between described temperature sensor and the power model.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220333362 CN202734994U (en) | 2012-07-10 | 2012-07-10 | Temperature sensor and induction cooker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220333362 CN202734994U (en) | 2012-07-10 | 2012-07-10 | Temperature sensor and induction cooker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202734994U true CN202734994U (en) | 2013-02-13 |
Family
ID=47660681
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220333362 Expired - Lifetime CN202734994U (en) | 2012-07-10 | 2012-07-10 | Temperature sensor and induction cooker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202734994U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102778305A (en) * | 2012-07-10 | 2012-11-14 | 美的集团有限公司 | temperature sensor and induction cooker |
-
2012
- 2012-07-10 CN CN 201220333362 patent/CN202734994U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102778305A (en) * | 2012-07-10 | 2012-11-14 | 美的集团有限公司 | temperature sensor and induction cooker |
| CN102778305B (en) * | 2012-07-10 | 2015-04-29 | 美的集团股份有限公司 | Temperature sensor and electromagnetic oven |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130213 |