CN203407927U - Electric rice cooker circuit - Google Patents
Electric rice cooker circuit Download PDFInfo
- Publication number
- CN203407927U CN203407927U CN201320420524.7U CN201320420524U CN203407927U CN 203407927 U CN203407927 U CN 203407927U CN 201320420524 U CN201320420524 U CN 201320420524U CN 203407927 U CN203407927 U CN 203407927U
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- microswitch
- circuit
- cooker
- electric
- rice cooker
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Abstract
The utility model discloses an electric rice cooker circuit which comprises two parallel metal sheets and a PTC (Positive Temperature Coefficient) element, a heating disc, an insulating sheet, and a first microswitch (10), wherein the heating disc is connected in series with the two parallel metal sheets and the PTC element; the insulating sheet is connected in series with the heating disc; the first microswitch (10) is connected in series with the insulating sheet; the first microswitch (10) is closed due to pressure of an inner pot. The electric ricer cooker circuit can automatically begin working after the inner pot containing water and rice is placed in a cooker body and a cooker cover is closed, thus omitting the step of switching on a power supply switch, and avoiding the defect that as people forgets to switch on the power supply switch, the electric rice cooker does not work to waste the time of a user.
Description
Technical field
The utility model relates to a kind of circuit, particularly a kind of electric rice cooker circuit.
Background technology
The workflow of existing electric cooker is generally such, and user puts into the interior pot that fills water and rice the pot body of electric cooker, covers pot cover, turns on the power switch, and sets electric cooker heating mode or heat time, and electric cooker is started working.When the internal circuit of electric cooker judges that above-mentioned heating mode finishes or the heat time arrives, power switch disconnects, electric cooker power cut-off.
But a shortcoming of above-mentioned existing electric cooker is, need user that interior pot is put into after the pot body of electric cooker, also to press or stir power switch, thereby make electric cooker start working.If forgetting, user turns on the power switch, electric cooker can not started working, even if the interior pot that fills like this water and rice is put into the pot body of electric cooker, originally being intended that of user wants electric cooker to start working, electric cooker can not started working yet, so just run counter to user's original intention, wasted the time.
Utility model content
The technical problem of automatically not starting working according to user's original idea for above-mentioned electric cooker, the utility model provides a kind of electric rice cooker circuit, comprise: bimetal leaf and PTC element in parallel, and the heat-generating disc of connecting with bimetal leaf and the PTC element of described parallel connection; The insulation sheet of connecting with described heat-generating disc; First microswitch of connecting with described insulation sheet; Described the first microswitch is subject to the pressure of interior pot of electric cooker and closure.
Further, described electric rice cooker circuit also comprises: the 3rd microswitch, described the 3rd microswitch closure when the cover of electric cooker closes; The second microswitch, described the second microswitch is connected with described the 3rd microswitch, and described the second microswitch disconnects when the temperature of described interior pot reaches uniform temperature; Described insulation sheet is in parallel with described the 3rd microswitch with described second microswitch of connecting.
Further, described electric rice cooker circuit also comprises: be connected on the thermal cut-off in circuit.
Further, described electric rice cooker circuit also comprises: be connected in parallel on the indicator lamp at described insulation sheet two ends, and be connected in parallel on the indicator lamp at heat-generating disc and bimetal leaf two ends.
The electric cooker with circuit of the present utility model is put into pot body and closes after pot cover at the interior pot that fills water and rice, can automatically start working, remove the step turning on the power switch in addition from, avoided turning on the power switch because forgetting the shortcoming that the electric cooker causing does not have work to waste user's time.
Accompanying drawing explanation
Fig. 1 is the front section view that comprises the electric cooker of circuit of the present utility model;
Fig. 2 is the bottom sectional view of the electric cooker in Fig. 1;
Fig. 3 is the schematic diagram of electric rice cooker circuit of the present utility model.
The specific embodiment
Fig. 1 has shown the front section view of the electric cooker that comprises circuit of the present utility model, and Fig. 2 has shown the bottom sectional view of electric cooker.Cover 1, bowl-shape shell 2, in the bowl-shape middle level 3 of shell 2 inner sides, sealed the support 13 of the annular opening between shell 2 and middle level 3, formed a closed pot body, for placing the interior pot that fills a certain amount of water or rice.
One end of arch bar 5 is connected on the lower end of connecting rod 4 and is positioned at spring upper end, when connecting rod 4 moves downward, by the described spring of arch bar 5 compressing.The other end of arch bar 5 is connected to one end of the rod 9 of the center that is positioned at described bottom cavity, and arch bar 5 can the locking and unlocking rod 9, and rod 9 can be also arch bar.Rod 9 is connected to the magnet steel 8 that is positioned at bottom of pot body.In magnet steel 8, be provided with soft or hard permanent magnet, when magnet steel 8 is subject to inner pot pressure, thereby soft or hard permanent magnet is near inhaling mutually.
When cover 1, open and put into when pot, magnet steel 8 pressurizeds are closed, and magnet steel 8 presses pressure arch bar 7, and drivening rod self-locking device 11 is ready, locks rod 9 simultaneously.When cover 1 closes, cover presses connecting rod 4 and moves downward, and drives arch bar 5, has removed the locking to the rod 9 on magnet steel 8.Connecting rod 4 is by 11 lockings of connecting rod self-locking device simultaneously.
On magnet steel 8, be connected with steel disc (also can omit steel disc) and be connected with the first microswitch 10, the first microswitch 10 is electric cooker battery main switch.When magnet steel is not stressed, the first microswitch 10 disconnects, and when magnet steel is under pressure, compressing steel disc makes the first microswitch 10 pressurizeds and closure.That is to say, the lifting of magnet steel and depressing disconnects the first microswitch 10 or is closed.
Furtherly, while putting into the pot of having contained water and rice in pot body, magnet steel 8 is stressed and locks, simultaneously the first microswitch 10 closures.When interior pot is removed, magnet steel 8 is removed release because of the pressure bearing, and the first microswitch 10 disconnects simultaneously.
In the lower end of rod 9, be provided with the second microswitch 12, the lifting of rod 9 and press down and the second microswitch 12 is correspondingly disconnected and closed.When cover 1, open and take out interior when pot, pressure arch bar 7 is pressurized no longer, make connecting rod self-locking device 11 release connecting rods 4, the connecting rod 4 compressed springs in bottom are upspring, thereby connecting rod 4 upwards lifting drives arch bar 5, thereby the arch bar 5 lifting other ends are pushed down rod 9 downwards, make the afterbody of rod 9 tightly suppress magnet steel 8, the second fine motions and open 12 closures.While putting into pot in pot body, interior pot is pushed down magnet steel 8, and the soft or hard in magnet steel 8 is forever owed magnet and inhaled mutually, holds rod 9 afterbodys, and rod 9 is locked, the second microswitch 12 closures.
Therefore,, when cover 1 is opened and while putting into pot, the second microswitch 12 is closed.That is to say, the second microswitch 12 is in normally off.In addition, when cover 1 closes while pressing down connecting rod 4, connecting rod 4 presses arch bar 5 downwards, one end lifting that arch bar 5 is connected with rod 9, but rod 9 is failure to actuate by the suction of the soft or hard magnet in magnet steel 8, and therefore the second microswitch 12 is closure state.When electric cooker work one end is after the time, for example, when kettle temperature reaches uniform temperature (103 ± 2 ℃), the permanent magnet in magnet steel 8 is separated, drives rod 9 to takeoff, and the second microswitch 12 disconnects.Electric cooker heats while cooking work again, again takes out after interior pot enters standby shape and puts the interior pot of cover that closes again, and starts to heat and cook for the second time.
Arch bar 5 belows are provided with the 3rd microswitch 6, and arch bar 5 is driven and depresses or during lifting by connecting rod 4, make the 3rd microswitch 6 closed or disconnect.That is to say, when cover 1 is opened, the 3rd microswitch 6 disconnects, when cover 1 closes, and the 3rd microswitch 6 closures, the closure of the 3rd microswitch 6 circuit (being described below) that makes to cook is started working.
Electric cooker can also arrange buzzer, when interior pot temperature acquires a certain degree, sends buzzing, thereby reminds user's meal cooked.
Describe the frame for movement of electric cooker of the present utility model above, below with reference to Fig. 3, described the circuit structure of electric cooker.Fig. 3 is the circuit theory diagrams of electric cooker of the present utility model.
Circuit adopts mains-supplied, usings PTC element as voltage drop element, usings bimetal leaf as converter, and wherein PTC element and bimetal leaf are in parallel, forms terminal A and terminal B, after connect with the heat-generating disc as thermal source again, the other end formation terminal C of heat-generating disc.Between terminal A and the circuit of terminal C, indicator lamp W2 also in parallel, is used to indicate the mode of operation of cooking, and wherein indicator lamp W2 is in series with resistance R 2.
The step-down heater circuit of also having connected before the terminal C of this total head heater circuit, this step-down heater circuit is formed by insulation sheet in parallel and indicator lamp W1, and wherein indicator lamp W1 is also in series with resistance R 1, and indicator lamp W1 is used to indicate heat insulation work pattern.
The circuit of this electric cooker also comprises: the first microswitch 10, and it is for controlling the conducting of whole circuit; The second microswitch 12 and the 3rd microswitch 6, in parallel with warming plate after these two switch series connection.The circuit of described electric cooker also comprises the thermal cut-off 14 being connected in circuit, and while there is excess temperature in circuit, thermal cut-off 14 fuses to protect whole circuit immediately.
In pot body, put into after the pot of having contained water and rice, magnet steel 8 presses the first microswitch 10 closures.The first microswitch 10 closures, thermal circuit is closed, can start working, and heat-insulating lamp W1 is bright.Now, electric current forms series connection step-down thermal circuit by the first microswitch 10 through insulation sheet, heat-generating disc, bimetal leaf, thermal cut-off.Now W1 indicator lamp is connected in parallel on insulation sheet and works.W2 indicator lamp is not worked by heat-generating disc short circuit, and PTC element is not worked by bimetal leaf short circuit.
After cover 1 closes, press the arch bar 5 under connecting rod 4, pressuring spring compression simultaneously, arch bar 5 presses down, and its other end drives rod 9 liftings, but rod 9 is failure to actuate by the suction of the soft or hard magnet in magnet steel 8, and therefore the second microswitch 12 is closure state.On the other hand, arch bar 5 presses the 3rd microswitch 6 closures, and the closing of circuit of cooking, starts working, and the lamp w2 that cooks is bright.Electric current forms loop works (now PTC element is not worked by bimetal means short circuit) through the 3rd microswitch 6, heat-generating disc and bimetal means.In pot, after water boiling, bimetal leaf is disconnected by temperature, heat-generating disc and the tandem working of PTC element, and general power declines, and prevents violent boiling.When the timing of interior pot water evaporates to, when interior pot temperature reaches 103 ± 2 ℃, magnet steel 8 internal permanent magnets are separated, drive rod 9 to press the second microswitch 12 deenergizations, and now the bright heat insulation work that carries out of heat-insulating lamp W1, has cooked.
Above-described embodiment is typical embodiment of the present utility model; but the utility model is not restricted to the described embodiments; other any do not deviate from change, the modification done under Spirit Essence of the present utility model and principle, substitutes, combination, simplify; all should be equivalent substitute mode, within being included in protection domain of the present utility model.
Claims (4)
1. an electric rice cooker circuit, is characterized in that, comprising:
Bimetal leaf and PTC element in parallel, and the heat-generating disc of connecting with bimetal leaf and the PTC element of described parallel connection;
The insulation sheet of connecting with described heat-generating disc;
First microswitch (10) of connecting with described insulation sheet;
Described the first microswitch (10) is subject to the pressure of interior pot of electric cooker and closure.
2. electric rice cooker circuit according to claim 1, is characterized in that, also comprises:
The 3rd microswitch (6), described the 3rd microswitch (6) closure when the cover of electric cooker closes;
The second microswitch (12), described the second microswitch (12) is connected with described the 3rd microswitch (6), and described the second microswitch (12) disconnects when the temperature of described interior pot reaches uniform temperature;
Described insulation sheet is in parallel with described the 3rd microswitch (6) with described second microswitch (12) of connecting.
3. electric rice cooker circuit according to claim 1, is characterized in that, also comprises: be connected on the thermal cut-off in circuit.
4. electric rice cooker circuit according to claim 1, is characterized in that, also comprises: be connected in parallel on the indicator lamp (W1) at described insulation sheet two ends, and be connected in parallel on the indicator lamp (W2) at heat-generating disc and bimetal leaf two ends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320420524.7U CN203407927U (en) | 2013-07-15 | 2013-07-15 | Electric rice cooker circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320420524.7U CN203407927U (en) | 2013-07-15 | 2013-07-15 | Electric rice cooker circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203407927U true CN203407927U (en) | 2014-01-29 |
Family
ID=49970859
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320420524.7U Expired - Fee Related CN203407927U (en) | 2013-07-15 | 2013-07-15 | Electric rice cooker circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203407927U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104433787A (en) * | 2014-12-09 | 2015-03-25 | 常熟市久昇电器有限公司 | Temperature control type electric heating kettle |
-
2013
- 2013-07-15 CN CN201320420524.7U patent/CN203407927U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104433787A (en) * | 2014-12-09 | 2015-03-25 | 常熟市久昇电器有限公司 | Temperature control type electric heating kettle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140129 Termination date: 20200715 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |