CN100522025C - Temperature control device of electric cooker - Google Patents
Temperature control device of electric cooker Download PDFInfo
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- CN100522025C CN100522025C CNB2007100237360A CN200710023736A CN100522025C CN 100522025 C CN100522025 C CN 100522025C CN B2007100237360 A CNB2007100237360 A CN B2007100237360A CN 200710023736 A CN200710023736 A CN 200710023736A CN 100522025 C CN100522025 C CN 100522025C
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- electric cooker
- attemperating unit
- magnetic switch
- connecting rod
- electric
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Abstract
The present invention discloses a temperature control device for electric rice cooker. It includes the following several portions: power supply, magnetically-controlled switch positioned in the cooker interior, heat-insulating device parallelly-connected with said magnetically-controlled switch by means of change-over switch and electroheating plate. It is characterized by that on the external shell of said electric rice cooker a controller connected with said electroheating plate and said magnetically-controlled switch is set. Said invention also provides its working principle and concrete operation method.
Description
Technical field
The claimed technical scheme of the present invention relates to a kind of electric cooker attemperating unit.
Background technology
Magnetic control elastic sheet switch in the existing traditional electrical pot for cooking rice in the attemperating unit all is to lean on the elastic force of shell fragment to contact energising with the closed type warmer, elastic force is along with the increased frequency of using, at high temperature can weaken gradually, switch contact resistance is along with having made and can increase gradually in adverse circumstances such as humidity, oil smoke, the big electric current that switch passes through, the arcing phenomenon is arranged, the easier increase of contact resistance like this during disconnection.Contact resistance is big, big electric current by the time will generate heat, the elastic force of shell fragment will be along with reducing, elastic force reduces, loose contact, contact resistance more increases again, and the switch heating more increases again like this, and heating increases, switch elastic force reduces more, added original just work at high temperature,, following phenomenon of the failure arranged during damage so magnetic switch, warmer are operated in the middle of the high temperature vicious circle:
1, the magnetic control elastic sheet switch is easy to lose with the high temperature down spring so that switch can't be connected and lost efficacy under external force.2, switch contact resistance increases to 10 Europe to tens Europe, because of big electric current by burning out, burning.3, run into the electric leakage of water or other reason on the magnetic control elastic sheet switch, the isolated insulation sheet burns till carbonization, and electric current is straight-through can to continue to enlarge fault later, burns electric hot tray, line, working of plastics etc.4, the easy sintering of warmer also can continue to enlarge fault until burning the fusing of electric hot tray or superhigh temperature protector.5, electric cooker superhigh temperature fuse, be the disposable fusing of fire safety protective effect (line during fusing in the pot has all burnt) after, people to take time and the expense repair and replacement after could use.Because the elastic sheet switch in the traditional electric cooker (particularly 900-2500W large power, electrically pot for cooking rice), the heat-preserving constant-temperature device is operated in high temperature vicious circle state, service life is short, in humidity, oil smoke, pot, have in the adverse circumstances such as thin rice gruel, the grain of rice, foreign material, cockroach and damage easily, shorten the service life of electric cooker, brought the trouble and the loss of unnecessary maintenance to people.
Summary of the invention
Technical problem to be solved by this invention be at, the defective of prior art and deficiency provide a kind of electric cooker attemperating unit of safe, reliable, long service life.
For solving the problems of the technologies described above, technical scheme of the present invention is a kind of electric cooker attemperating unit, comprise, power supply, be positioned at the magnetic switch of pot, by change-over switch and magnetic switch and the warmer that connects, electric hot tray, it is characterized in that: be positioned at described electric cooker shell and be provided with and the electric hot tray controller that is connected with magnetic switch.
A kind of electric cooker attemperating unit, described controller comprises power circuit, transformer, integrated circuit, relay, power supply is connected with the elementary of transformer by power circuit, a secondary end ground connection of transformer, the other end by diode respectively with an end of relay coil be connected with integrated circuit pin 6 by resistance R 6, the other end of relay coil is connected with integrated circuit pin 2; Integrated circuit pin 3 is connected with integrated circuit pin 4 by magnetic switch.
A kind of electric cooker attemperating unit, described power supply one end links to each other with an end of relay contact, and the other end of contact links to each other with an end of electric hot tray by fuse, and the other end of electric hot tray is connected with zero-power line;
A kind of electric cooker attemperating unit, described magnetic switch limits warm element, connecting rod, one group of dynamic and static contact to be formed by magnet steel, described connecting rod one end limits warm element to be connected with magnet steel, its other end links to each other with the insulation fulcrum, the movable contact that displacement by connecting rod is connected with stationary contact is located at the middle part of connecting rod, be connected with connecting rod 4 by insulation board, stationary contact is fixed on the pot seat by the insulation board correspondence.
A kind of electric cooker attemperating unit, described connecting rod are positioned at fulcrum bearing and are provided with the gap, and stationary links and connecting rod fixing hole are provided with the gap on the fulcrum.
The superhigh temperature temperature limiter that a kind of electric cooker attemperating unit, the two ends of described magnetic switch are provided with and connect.
A kind of electric cooker attemperating unit, described superhigh temperature temperature limiter is an open type.
A kind of electric cooker attemperating unit, described controller are located at the plug place of electric cooker power line.
A kind of electric cooker attemperating unit, the model of described IC are TLP632.
A kind of electric cooker attemperating unit, owing to adopt said structure, compared with prior art: have the following advantages:
1, the magnetic control contact vertically contacts with gravity by magnet steel thrust, almost is permanent clutch reliably, and simple, and the contact does not need debugging during production.
2, magnetic switch is operated in the little current status in the 2mA left and right sides, can not burn out.
If 3, the magnetic switch electric leakage does not enlarge fault, but protects electric cooker heat-generating disc no power automatically.
4, magnetic switch is not subjected to temperatures involved service life.
5, the magnetic switch contact resistance increases from zero to 6000 ohm and changes the normal use that does not influence electric cooker.This characteristics are arranged: magnetic switch has in humidity, oil smoke, dust, pot can operate as normal in the adverse circumstances such as thin rice gruel, the grain of rice, foreign material, cockroach.
6, warmer is to adopt open type, does not influence electric cooker after the inefficacy and normally cooks.
7, the warmer contact resistance increases to 6K Ω with the interior electric cooker insulation operate as normal that do not influence.
8, warmer is operated in the little current status of 2mA, so former warmer can be done forr a short time (reducing cost).
9, the warmer electric leakage does not enlarge fault yet, and makes the heat-generating disc no power, thereby protects electric cooker automatically.
10, install the superhigh temperature temperature limiter additional between temperature when the magnet steel tripping and the protector fusing-off temperature; make heater not be operated in the superhigh temperature state and aged deterioration in advance; and burn heat-generating disc or protector in the time of protecting artificial card to burn because of carelessness; avoid artificial damage; thereby prolong the service life of heater; the ultra-high temperature temperature limiter also is to be operated in little current status, and contact resistance increases to 6000 Ω and acts on the interior limit temperature that also can play.One safeguard protection added in installing additional to electric cooker of ultra-high temperature temperature limiter, if temperature limiter was just in case lost efficacy, electric cooker in the same old way can operate as normal.
11, controller is partly avoided a pot interior high temperature, and the abominable environment for use of isolation that is packaged together, and is operated in the little current status of 15-60mA, and work is not generated heat, and electronic component work is more reliable, and is durable, with low cost.
After adopting split type attemperating unit, original defective of traditional electric cooker and deficiency have been solved.The damage probability of electric cooker is descended greatly.Magnetic switch, temperature controller, temperature limiter in the electric cooker do not damage owing to energy operate as normal in abominable environment for use, thereby have prolonged the service life of electric cooker greatly, artificially also are not easy to damage.Controller has been avoided high temperature outside pot, can do small and exquisitely, and electronic component partly surpasses the production life standard, just in case damage, people can be as changing plug, and socket is so simple, fast changes.Save the time and the expense of repairing.So people no longer include trouble and direct, the indirect loss of keeping in repair repeatedly in the electric cooker use.Without any reason, abandoning can be normally handy, outward appearance, the not bad electric cooker of lacquer water.So just can save the plastics resource that a large amount of non-ferrous metals and Petroleum refining go out, be the economic development of country, energy-saving and cost-reducing, the protection environment all has positive effect.
Description of drawings
The present invention is further detailed explanation below in conjunction with the drawings and specific embodiments;
Fig. 1 is a kind of electric cooker attemperating unit of the present invention electrical block diagram;
Fig. 2 is a magnetic switch structural representation shown in Figure 1;
In Fig. 1, figure, 1, magnetic switch; 2, controller; 3, switching power circuit; 4, connecting rod; 5, fulcrum.
The specific embodiment
As shown in Figure 1 and Figure 2, a kind of electric cooker attemperating unit, comprise, power supply, the magnetic switch 1 that is positioned at pot, one group of contact K-2 and magnetic switch 1 and the warmer ST2 that connects, electric hot tray EH by cooking, be incubated change-over switch K1, be positioned at described electric cooker shell and be provided with the controller 2 that is connected with magnetic switch 1 with electric hot tray EH.Described controller 2 also can be located at the plug place of electric cooker power line.Described controller 2 comprises power circuit 3, transformer T, IC, relay K, power supply is connected with the elementary of transformer T by power circuit 3, the secondary end ground connection of transformer T, the other end by diode D3 respectively with an end of relay K coil be connected with IC pin 6 by resistance R 6, the other end of relay K coil is connected with IC pin 2; IC pin 3 is connected with IC pin 4 by magnetic switch 1.Power firestreak one end links to each other with an end of relay K contact, and the other end of contact links to each other with the end of electric hot tray FH by fuse RD, and the other end of electric hot tray FH is connected with zero-power line; Power circuit 3 provides safety, reliably working low-voltage for relay, IC.The relay K switching, controlled by IC, the level signal of pin 2 outputs of IC is controlled by the magnetic switch 1 in the pot, warmer ST2, superhigh temperature temperature limiter ST1.Part part in the pot, the connection of pot outer controller part is formed by connecting with two power lines and two thin wires respectively.
When electric cooker is cooked by lower link 4, magnet steel limits warm element XW adhesive switch contact to separate, the energising of electric cooker heat-generating disc, the temperature that heating is set when meal is ripe, magnet steel is limit warm element XW tripping promotion, vertical gravity, connects magnetic switch 1, and the power supply that partly disconnects electric hot tray EH by the pot outer controller stops heating, whole electric cooker is not charged, and security is better like this.When meal need be incubated, pull out logical insulation change-over switch K (this switch failure does not influence normally and cooks), press lower link 4 and get final product.When the temperature of certain reason electric cooker surpasses the needed high temperature of cooking, superhigh temperature temperature limiter ST1 just moves, and disconnects electric hot tray EH power supply, and the protection electric cooker is inoperative when cooking, and does not also influence electric cooker and does not normally use if lose efficacy.This electric cooker attemperating unit can be retrofitted on the traditional electrical pot for cooking rice simply and easily.
In conjunction with the accompanying drawings the present invention has been carried out exemplary description above; obviously specific implementation of the present invention is not subjected to the restriction of aforesaid way; as long as the various improvement of having adopted method design of the present invention and technical scheme to carry out; or directly apply to other occasion without improvement, all within protection scope of the present invention.
Claims (7)
1, a kind of attemperating unit of electric cooker, comprise power supply, be positioned at the magnetic switch (1) of pot, by change-over switch (K1) and magnetic switch (1) and the warmer (ST2) that connects, electric hot tray (EH), it is characterized in that: be positioned at described electric cooker shell and be provided with the controller (2) that is connected with magnetic switch (1) with electric hot tray (EH), described controller (2) comprises switching power circuit (3), transformer (T), integrated circuit (IC), relay (K), power supply is by elementary being connected of power circuit (3) with transformer (T), a secondary end ground connection of transformer (T), the other end by diode (D3) respectively with an end of relay (K) coil be connected with integrated circuit (IC) pin 6 by resistance (R6), the other end of relay (K) coil is connected with integrated circuit (IC) pin 2; Integrated circuit (IC) pin 3 is connected with integrated circuit (IC) pin 4 by magnetic switch (1), and the model of described integrated circuit (IC) is TLP632.
2, the attemperating unit of a kind of electric cooker according to claim 1, it is characterized in that: described power supply one end links to each other with an end of relay (K) contact, the other end of contact links to each other with an end of electric hot tray (EH) by fuse (RD), and the other end of electric hot tray (EH) is connected with zero-power line.
3, the attemperating unit of a kind of electric cooker according to claim 1, it is characterized in that: described magnetic switch (1) limits warm element (XW), connecting rod (4), one group of dynamic and static contact to be formed by magnet steel, described connecting rod (4) one ends limit warm element (XW) to be connected with magnet steel, its other end links to each other with fulcrum (5), the movable contact that displacement by connecting rod (4) is connected with stationary contact is located at the middle part of connecting rod (4), be connected with connecting rod (4) by insulation board, stationary contact is fixed on the pot seat by the insulation board correspondence.
4, the attemperating unit of a kind of electric cooker according to claim 3 is characterized in that: the bearing that described connecting rod (4) is positioned at fulcrum (5) is provided with the gap.
5, the attemperating unit of a kind of electric cooker according to claim 1 is characterized in that: the two ends of described magnetic switch (1) are provided with superhigh temperature temperature limiter (ST1) in parallel.
6, the attemperating unit of a kind of electric cooker according to claim 5 is characterized in that: described superhigh temperature temperature limiter (ST1) is an open type.
7, the attemperating unit of a kind of electric cooker according to claim 1 is characterized in that: described controller (2) is located at the plug place of electric cooker power line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100237360A CN100522025C (en) | 2007-07-07 | 2007-07-07 | Temperature control device of electric cooker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100237360A CN100522025C (en) | 2007-07-07 | 2007-07-07 | Temperature control device of electric cooker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101091623A CN101091623A (en) | 2007-12-26 |
| CN100522025C true CN100522025C (en) | 2009-08-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007100237360A Expired - Fee Related CN100522025C (en) | 2007-07-07 | 2007-07-07 | Temperature control device of electric cooker |
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| Country | Link |
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| CN (1) | CN100522025C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103417109B (en) * | 2012-05-22 | 2015-10-28 | 广东华博企业管理咨询有限公司 | Energy-efficient electric kettle |
| CN107149387A (en) * | 2017-06-06 | 2017-09-12 | 卢世奎 | One kind is without button electric cooker |
| CN107946832A (en) * | 2017-12-20 | 2018-04-20 | 佛山市高明欧电子制造有限公司 | A kind of coupler with magnetic plug with magnetic temperature controller |
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2007
- 2007-07-07 CN CNB2007100237360A patent/CN100522025C/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN101091623A (en) | 2007-12-26 |
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