CN2874975Y - Magnetic shield anti-dry burning sensor for micro computer type rice cooker - Google Patents
Magnetic shield anti-dry burning sensor for micro computer type rice cooker Download PDFInfo
- Publication number
- CN2874975Y CN2874975Y CN 200620054350 CN200620054350U CN2874975Y CN 2874975 Y CN2874975 Y CN 2874975Y CN 200620054350 CN200620054350 CN 200620054350 CN 200620054350 U CN200620054350 U CN 200620054350U CN 2874975 Y CN2874975 Y CN 2874975Y
- Authority
- CN
- China
- Prior art keywords
- reed switch
- magnetic
- magnetic reed
- groove
- permanent magnet
- Prior art date
- 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
Links
- 235000007164 Oryza sativa Nutrition 0.000 title claims abstract description 9
- 235000009566 rice Nutrition 0.000 title claims abstract description 9
- 240000007594 Oryza sativa Species 0.000 title claims abstract 3
- 235000014676 Phragmites communis Nutrition 0.000 claims abstract description 31
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 18
- 229910052742 iron Inorganic materials 0.000 claims abstract description 9
- 230000004907 flux Effects 0.000 claims abstract description 6
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 22
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 description 8
- 241000209094 Oryza Species 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 238000009841 combustion method Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
Images
Landscapes
- Cookers (AREA)
Abstract
The utility model provides a magnetic shielding dry-fire protection sensor for microcomputer-type electric rice cooker, which comprises a shell, a seat disposed on the upper part of the shell, a thermal resistor disposed on the upper end of the seat, wherein in the middle of the seat is provided a concave groove with lower part opening, in the seats on both sides of the groove are respectively provided a permanent magnet and a magnetic reed switch, and the magnetic reed switch is disposed on the magnetic line of force of the permanent magnet; on the shell that is corresponding to the upper part opening of the groove is mounted shielding iron sheet that is capable of moving along the groove to change magnetic flux of the magnetic reed switch; and the magnetic reed switch and thermal resistor are connected in parallel. The utility model has the advantages of safe operation and long service life.
Description
Technical field
The utility model relates to a kind of transducer, refers in particular to a kind of magnetic shield anti-dry burning sensor for micro computer type rice cooker that microcomputer type electric cooker uses.
Background technology
The employed heat sensor of existing microcomputer electric cooker, be to transmit pot end variations in temperature to master board by thermistor, and by being installed in the unusual overtemperature prote of disposable fuse-link conduct on the transducer, the shortcoming of its existence is: when (1) leaves heating board when interior pot, can not cut off the electricity supply automatically, if other power cut-off device established takes place when unusual, heating board can continue to heat up dry combustion method danger takes place; (2) after the overtemperature prote action was taking place fuse-link, transducer was just scrapped and can not be used again.
Summary of the invention
The purpose of this utility model aims to provide long a kind of magnetic shield anti-dry burning sensor for micro computer type rice cooker of a kind of safe in utilization, life-span.
The purpose of this utility model is achieved in that a kind of magnetic shield anti-dry burning sensor for micro computer type rice cooker, comprise shell, be arranged on the pedestal of shell upper, be arranged on the thermistor of pedestal upper end, wherein: described pedestal middle part is provided with the groove of lower openings, be respectively equipped with permanent magnet, magnetic reed switch in the pedestal on groove both sides, magnetic reed switch is positioned on the magnetic line of force of permanent magnet; With the corresponding shell of groove lower openings on be fixed with and can move the shielding iron plate that changes magnetic reed switch magnetic flux along groove; Magnetic reed switch and thermistor are connected in parallel.
Permanent magnet described in the above-mentioned magnetic shield anti-dry burning sensor for micro computer type rice cooker and magnetic reed switch are arranged on the bottom of pedestal; Can intercept the heat that heating board transmits like this, prevent the magnetic force high temperature decay of permanent magnet, reach the long-lived effect of safety.
After the utility model adopts said structure,, utilize the shielding iron plate to adjust the magnetic flux size, realize the conducting or the disconnection of power supply, reach anti-dry and purpose safe in utilization by in pedestal, permanent magnet being set and magnetic reed switch matches; Make electric cooker not fragile, longer service life.
Description of drawings
Below in conjunction with the embodiment in the accompanying drawing the utility model is described in further detail, but does not constitute any restriction of the present utility model.
Fig. 1 is the structural representation of a kind of specific embodiment of the utility model;
Fig. 2 is the operation principle schematic diagram of magnetic reed switch closure state of the present utility model;
Fig. 3 is the operation principle schematic diagram of magnetic reed switch off-state of the present utility model;
Fig. 4 is the utility model user mode schematic diagram.
Among the figure: 1-shell, 2-pedestal, 21-groove, 3-thermistor, 4-permanent magnet, 5-magnetic reed switch, 6-shielding iron plate, 7-copper sheet, 8-return spring, 9-lead.
Embodiment
Consult shown in Figure 1, magnetic shield anti-dry burning sensor for micro computer type rice cooker of the present utility model, comprise shell 1, be arranged on the pedestal 2 on shell 1 top, be arranged on the thermistor 3 of pedestal 1 upper end, be provided with the groove 21 of lower openings at pedestal 2 middle parts, be respectively equipped with permanent magnet 4, magnetic reed switch 5 in the pedestal 2 of groove 21 the right and lefts, permanent magnet 4 and magnetic reed switch 5 correspondences are arranged on the bottom position of pedestal 2, and magnetic reed switch 5 is positioned on the magnetic line of force of permanent magnet 4; With the corresponding shell 1 of groove 21 lower openings on be fixed with and can move the shielding iron plate 6 that changes magnetic reed switch 5 magnetic flux along groove 21; Magnetic reed switch 5 is connected in parallel by copper sheet 7 and thermistor 3.
Operation principle of the present utility model is consulted Fig. 2, shown in Figure 3, be to utilize shielding iron plate 6 permanent magnet 4 and magnetic reed switch 5 upper and lower moving, change magnetic flux, realize the conducting and the disconnection of magnetic reed switch 5, arrive the purpose that changes thermistor 3 output signals by magnetic reed switch 5.
The utility model is when concrete the use, consult Fig. 1, shown in Figure 4, when inner pan of electric cooker is put into pot, interior pot compression retracteding position spring 8, it is mobile that pedestal 2 is depressed, and the shielding iron plate 6 that is fixed on the shell 1 stretches between permanent magnet 4 and the magnetic reed switch 5, with the magnetic field shielding of permanent magnet 4, magnetic reed switch 5 disconnects, and thermistor 3 provides in good time resistance signal by connecting lead 9 to master control borad.When interior pot takes out from pot, pedestal 2 moves up under the elastic force effect of return spring 8, thereby shielding iron plate 6 is broken away between permanent magnet 4 and the magnetic reed switch 5, magnetic reed switch 5 is closed under the action of a magnetic field of permanent magnet 4, the signal of thermistor is by magnetic reed switch 5 short circuits, master control borad obtains the zero resistance signal from connection lead 9 and cuts off the heating board power supply rapidly, reaches the purpose of anti-dry.
Claims (2)
1. magnetic shield anti-dry burning sensor for micro computer type rice cooker, comprise shell (1), be arranged on the pedestal (2) on shell (1) top, be arranged on the thermistor (3) of pedestal (1) upper end, it is characterized in that: described pedestal (2) middle part is provided with the groove (21) of lower openings, be respectively equipped with permanent magnet (4), magnetic reed switch (5) in the pedestal (2) on groove (21) both sides, magnetic reed switch (5) is positioned on the magnetic line of force of permanent magnet (4); With the corresponding shell of groove (21) lower openings (1) on be fixed with the shielding iron plate (6) that can move change magnetic reed switch (5) magnetic flux along groove (21); Magnetic reed switch (5) is connected in parallel with thermistor (3).
2. transducer according to claim 1 is characterized in that: described permanent magnet (4) and magnetic reed switch (5) are arranged on the bottom of pedestal (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620054350 CN2874975Y (en) | 2006-01-24 | 2006-01-24 | Magnetic shield anti-dry burning sensor for micro computer type rice cooker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620054350 CN2874975Y (en) | 2006-01-24 | 2006-01-24 | Magnetic shield anti-dry burning sensor for micro computer type rice cooker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2874975Y true CN2874975Y (en) | 2007-02-28 |
Family
ID=37781562
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620054350 Expired - Lifetime CN2874975Y (en) | 2006-01-24 | 2006-01-24 | Magnetic shield anti-dry burning sensor for micro computer type rice cooker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2874975Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103690056A (en) * | 2013-12-20 | 2014-04-02 | 阮保清 | Anti-dry heating device of electric rice cooker |
| CN104523155A (en) * | 2015-02-03 | 2015-04-22 | 佛山市川东磁电股份有限公司 | Action piece dry burning protection sensor |
| CN109238482A (en) * | 2018-09-28 | 2019-01-18 | 佛山市川东磁电股份有限公司 | A kind of detection of high current sky pot and dry-burning preventing sensor |
-
2006
- 2006-01-24 CN CN 200620054350 patent/CN2874975Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103690056A (en) * | 2013-12-20 | 2014-04-02 | 阮保清 | Anti-dry heating device of electric rice cooker |
| CN104523155A (en) * | 2015-02-03 | 2015-04-22 | 佛山市川东磁电股份有限公司 | Action piece dry burning protection sensor |
| CN104523155B (en) * | 2015-02-03 | 2017-03-15 | 佛山市川东磁电股份有限公司 | A kind of action movie dry-burning preventing sensor |
| CN109238482A (en) * | 2018-09-28 | 2019-01-18 | 佛山市川东磁电股份有限公司 | A kind of detection of high current sky pot and dry-burning preventing sensor |
| CN109238482B (en) * | 2018-09-28 | 2020-06-02 | 佛山市川东磁电股份有限公司 | Large-current empty pot detection and dry burning prevention sensor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: FUSHAN CITY CHUANDONG TEMPERATURE-SENSITIVE MAGNET Free format text: FORMER OWNER: YAN YAO Effective date: 20090814 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20090814 Address after: Guangdong province Foshan city Gaoming Cangjiang Industrial Park and Road No. 372, zip code: 528513 Patentee after: Foshan Chuandong Thermal Magnetic Co., Ltd. Address before: Room 301, Guangdong science and Technology Department building, 171 Xin Xin Road, Guangdong, Guangzhou Province, China: 510040 Patentee before: Yan Tao |
|
| CX01 | Expiry of patent term |
Granted publication date: 20070228 |
|
| EXPY | Termination of patent right or utility model |