CN201879506U - Control circuit for state selection of electric food warmer and electric food warmer with state selection - Google Patents
Control circuit for state selection of electric food warmer and electric food warmer with state selection Download PDFInfo
- Publication number
- CN201879506U CN201879506U CN2010206175308U CN201020617530U CN201879506U CN 201879506 U CN201879506 U CN 201879506U CN 2010206175308 U CN2010206175308 U CN 2010206175308U CN 201020617530 U CN201020617530 U CN 201020617530U CN 201879506 U CN201879506 U CN 201879506U
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- Prior art keywords
- switch
- food warmer
- control circuit
- electric food
- insulation
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- Expired - Lifetime
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- 238000010438 heat treatment Methods 0.000 claims abstract description 47
- 238000009413 insulation Methods 0.000 claims abstract description 47
- 238000009434 installation Methods 0.000 claims description 21
- 238000004321 preservation Methods 0.000 abstract 3
- 238000009835 boiling Methods 0.000 abstract 1
- 238000005485 electric heating Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 5
- 239000002699 waste material Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 235000019628 coolness Nutrition 0.000 description 2
- 238000010411 cooking Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
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Abstract
The utility model provides a control circuit for the state selection of an electric food warmer. An electric heating device HT, an overtemperature switch K2 and a timer T1 are connected in series, a series circuit of a toggle switch K1 and a heat insulation switch K3 is parallel connection with the timer T1, the heat insulation switch K3 and the overtemperature switch K2 are both in a normally-closed type, and in addition, the switch-off temperature of the heat insulation switch K3 is lower than the switch-off temperature of the overtemperature switch K2. The utility model also provides the electric food warmer with the state selection. Compared with the prior art, the utility model has the advantages that the toggle switch K1 is arranged in the control circuit, and the series circuit of the toggle switch K1 and the heat insulation switch K3 is parallel connection with the timer T1, so before food boiling, users can set the action of the electric food warmer for continuously preserving the heat or directly cutting off the power for shutdown after the timed heating completion, the electric food warmer can automatically carry out heat preservation or shutdown after the timed heating completion, the condition that the heat preservation is carried out in a forced way when the heat preservation operation not needed by the users is avoided, and energy resources are saved.
Description
Technical field
The utility model relates to the kitchen appliance field, particularly a kind of electric food warmer that is used for the control circuit of electric food warmer state selection and has the state selection.
Background technology
Electric food warmer in the market mainly adopts microcomputerized control and two kinds of control modes of mechanical type, wherein mechanical type adopts time switch to control heat time heating time more, if need realize also that after heating the function that is incubated then need cooperate the insulation switch in the circuit to realize, as shown in Figure 1.But in technique scheme, electric food warmer is finished timer K1 after predetermined heat time heating time, and timer K1 begins to enter holding stage, and when food temperature in the electric food warmer was higher than a certain limit value that is incubated K switch 2, insulation K switch 2 disconnected, and heating is ended; When insulation K switch 2 was recovered normally off, circuit turn-on began heating, reached limit value again until insulation K switch 2 and disconnected, and went round and began again and turn-offed the electric food warmer power supply until the user.Before user's power cutoff, electric food warmer is in holding stage always, promptly heat-stop to heat-heat-process that stops to heat in, still heat under the situation that does not need to be incubated for the food that does not need to be incubated or user, can not select the state after regularly heating is finished, can not control the state of electric food warmer automatically after regularly heating is finished, and need the user manually to adjust, it is not convenient to use.And, originally finishing after the regularly heating directly deenergization, also can forget because of user's inadvertent, waste energy.
Summary of the invention
Technical problem to be solved in the utility model is to overcome above-mentioned the deficiencies in the prior art and a kind of control circuit that the electric food warmer state is selected that is used for is provided.
In order to solve above-mentioned technical problem, the technical scheme that the utility model adopted is: a kind of control circuit that is used for the selection of electric food warmer state, comprise the electric calorifie installation HT that food in the electric food warmer is heated, insulation K switch 3, overtemperature K switch 2 and control food are stewed and are boiled the timer T1 of time, described control circuit also comprises the toggle switch K1 that the electric food warmer state is selected, described electric calorifie installation HT, overtemperature K switch 2 and timer T1 are connected in series, series circuit and timer T1 after described toggle switch K1 and 3 series connection of insulation K switch are connected in parallel, described insulation K switch 3 and overtemperature K switch 2 are closed type, and the break-off signal of insulation K switch 3 is lower than the break-off signal of overtemperature K switch 2.
Described control circuit also comprises the diode D3 that regulates keeping warm mode power, and the series circuit of described diode D3, insulation K switch 3 and toggle switch K1 is in parallel with timer T1.
Described control circuit also comprises the diode D2 that regulates heated condition power, and described diode D2 is in parallel with overtemperature K switch 2.
Described control circuit also comprises the heating indicating circuit that is in series by the burner on light L1 and the first current-limiting resistance R1, and by being incubated the insulation indicating circuit that the indicator lamp L2 and the second current-limiting resistance R2 are in series; Described insulation indicating circuit is in parallel with diode D3, described heating indicating circuit connect with diode D1 back and electric calorifie installation HT parallel connection, and described diode D1 and diode D3 are in the relative oppositely installation of circuit Semi-polarity.
The temperature of the interior food of corresponding pot courage was 60 ~ 65 ℃ when described insulation K switch 3 was moved, and the temperature of the interior food of correspondence pot courage was 95 ~ 100 ℃ when described overtemperature K switch 2 was moved.
The purpose of this utility model also is to provide a kind of and adopts above-mentioned control circuit to have the electric food warmer that state is selected, and comprises control device and pot courage, and described control device is provided with the above-mentioned control circuit that the electric food warmer state is selected that is used for.
Compare with prior art, useful technique effect of the present utility model is: by be provided with the toggle switch K1 that can select the electric food warmer state in control circuit, series circuit and timer T1 after toggle switch K1 and 3 series connection of insulation K switch are connected in parallel, making the user that the action that electric food warmer finishes after the regularly heating just can be set before cooking food is to need to continue to be incubated or can directly to cut off the power supply shutdown, electric food warmer can be incubated or shut down automatically after regularly heating is finished, the situation that has been forced to be incubated when having avoided the user not need to be incubated has been saved the energy.
In addition, the utility model makes electric food warmer adopt heating with full power in the starting stage by diode D3 that regulates keeping warm mode power and the diode D2 that regulates heated condition power are set, and programming rate is fast, reduces period of reservation of number; Food temperature reaches after a certain limit value in the pot courage, adopts the half-power heating, has reduced heating power, can effectively prevent Spill stopping pan, has also reduced the waste of the energy simultaneously; The insulation heating period after regularly heating is finished also only adopts half-power to continue the insulation heating, has further reduced the waste of the energy.Especially the temperature upper punch of electric food warmer of having avoided adopting pottery pot courage is excessive and food is become dry, and whole insulating process has also been saved the energy.
Description of drawings
Fig. 1 is the control circuit figure of prior art.
Fig. 2 is the control circuit figure that the electric food warmer state is selected that is used for of the utility model first embodiment.
Fig. 3 is the control circuit figure that the electric food warmer state is selected that is used for of the utility model second embodiment.
Fig. 4 is the control circuit figure that the electric food warmer state is selected that is used for of the utility model the 3rd embodiment.
The specific embodiment
Further specify the technical solution of the utility model below in conjunction with drawings and Examples.
Embodiment 1
Please refer to shown in Figure 2ly, be the control circuit that the electric food warmer state is selected that is used for of the utility model first embodiment.This control circuit is connected between power firestreak end ACL and the zero line side CAN, fuse FUSE, control food are stewed and to be boiled timer T1, electric calorifie installation HT and the overtemperature K switch 2 of time and be connected in series series circuit and timer T1 parallel connection after toggle switch K1 and 3 series connection of insulation K switch.Insulation K switch 3 and overtemperature K switch 2 are closed type, and the break-off signal of insulation K switch 3 is lower than the break-off signal of overtemperature K switch 2, the temperature of the interior food of corresponding pot courage was 60 ~ 65 ℃ when insulation K switch 3 was in the present embodiment moved, and the temperature of the interior food of correspondence pot courage is 95 ~ 100 ℃ during 2 actions of overtemperature K switch.
Shutdown after heating is finished: when toggle switch K1 disconnects, electric food warmer is controlled food by timer T1 heat time heating time, does not finish timer T1 during predetermined heat time heating time, if temperature surpasses overtemperature K switch 2 operating temperatures in the pot courage, then overtemperature K switch 2 disconnects, and electric calorifie installation HT heating stops; Electric calorifie installation HT recovers heating when 2 coolings of overtemperature K switch recover closure state; When finishing timer T1 predetermined heat during the time, timer T1 disconnects, and electric calorifie installation HT heats termination, and circuit cuts off the power supply automatically, and electric food warmer quits work.
Back insulation is finished in heating: when toggle switch K1 is closed, during heating operation principle with the aforementioned operation principle of finishing before the timer T1 scheduled time, after finishing the timer T1 scheduled time, timer T1 disconnection.When temperature was reduced to a certain limit value in the pot courage, overtemperature K switch 2 and insulation K switch 3 were all recovered closure state, and electric calorifie installation HT begins heating again, and when temperature in the pot courage surpassed insulation K switch 3 operating temperatures, insulation K switch 3 disconnected, and electric calorifie installation HT stops heating; Heating began again when 3 coolings of insulation K switch recovered closed, and promptly electric food warmer is in keeping warm mode always, shuts down up to the user.
Embodiment 2
Please refer to shown in Figure 3, be with the first embodiment difference: also comprise diode D3 that regulates keeping warm mode power and the diode D2 that regulates heated condition power in the control circuit, the series circuit of described diode D3, insulation K switch 3 and toggle switch K1 is in parallel with timer T1, and described diode D2 is in parallel with overtemperature K switch 2.
In heating process, if temperature surpasses overtemperature K switch 2 operating temperatures in the pot courage, then electric food warmer still keeps heated condition, but because the unidirectional conducting effect of diode D2, electric calorifie installation HT can only continue heating with the form of half-power.And in the heating process of holding stage, because the unidirectional conducting effect of diode D3, electric calorifie installation HT equally also can only be incubated heating with the form of half-power.The control circuit of the utility model embodiment makes electric food warmer adopt heating with full power in the starting stage by diode D3 that regulates keeping warm mode power and the diode D2 that regulates heated condition power are set, and programming rate is fast, reduces period of reservation of number; Food temperature reaches after a certain limit value in the pot courage, adopts the half-power heating, has reduced heating power, can effectively prevent Spill stopping pan, has also reduced the waste of the energy simultaneously; The insulation heating period after regularly heating is finished also only adopts half-power to continue the insulation heating, has further reduced the waste of the energy.Especially the temperature upper punch of electric food warmer of having avoided adopting pottery pot courage is excessive and food is become dry, and whole insulating process has also been saved the energy.
Embodiment 3
As shown in Figure 4, be that control circuit also comprises the heating indicating circuit that the burner on light L1 and the first current-limiting resistance R1 are in series with the second embodiment difference, and by being incubated the insulation indicating circuit that the indicator lamp L2 and the second current-limiting resistance R2 are in series; Described insulation indicating circuit is in parallel with diode D3, described heating indicating circuit connect with diode D1 back and electric calorifie installation HT parallel connection, and described diode D1 and diode D3 are in the relative oppositely installation of circuit Semi-polarity.Diode D1 and diode D3 are in order to ensure being in insulation when electric food warmer during the heating period, being incubated indicator lamp L2 when promptly the electric food warmer timer disconnects when lighting relative oppositely installation of circuit Semi-polarity, and burner on light L1 goes out.
The insulation indicating circuit can be connected in parallel on the series circuit two ends of D3 and insulation K switch 3, perhaps be connected in parallel on the series circuit two ends of D3 and insulation K switch 3 and toggle switch K1, because insulation K switch 3, toggle switch K1 are equivalent to the lead short circuit in the circuit when closed, therefore above-mentioned connected mode all is equivalent to the insulation indicating circuit and is directly parallel in diode D3 two ends.
Identical, heating indicating circuit and the series circuit after diode D1 connects can with electric calorifie installation HT parallel connection, the series circuit after perhaps heating indicating circuit and diode D1 connecting also can be connected in parallel with electric calorifie installation HT and overtemperature K switch 2 series circuits.
The technical scheme of above-mentioned control circuit is used for electric food warmer, makes electric food warmer have the function that state is selected.Electric food warmer with state selection of the present utility model comprises a control device and a pot courage, and control device is provided with the above-mentioned control circuit that the electric food warmer state is selected that is used for.
Will be appreciated that, above embodiment is used for illustrating the utility model, and be not to be used as qualification of the present utility model, as long as in connotation scope of the present utility model, all will drop in claims scope of the present utility model variation, the modification of the above embodiment.
Claims (6)
1. one kind is used for the control circuit that the electric food warmer state is selected, comprise the electric calorifie installation HT that food in the electric food warmer is heated, insulation K switch 3, overtemperature K switch 2 and control food are stewed and are boiled the timer T1 of time, it is characterized in that: described control circuit also comprises the toggle switch K1 that the electric food warmer state is selected, described electric calorifie installation HT, overtemperature K switch 2 and timer T1 are connected in series, series circuit and timer T1 after described toggle switch K1 and 3 series connection of insulation K switch are connected in parallel, described insulation K switch 3 and overtemperature K switch 2 are closed type, and the break-off signal of insulation K switch 3 is lower than the break-off signal of overtemperature K switch 2.
2. a kind of control circuit that the electric food warmer state is selected that is used for according to claim 1, it is characterized in that: described control circuit also comprises the diode D3 that regulates keeping warm mode power, and the series circuit of described diode D3, insulation K switch 3 and toggle switch K1 is in parallel with timer T1.
3. a kind of control circuit that the electric food warmer state is selected that is used for according to claim 1, it is characterized in that: described control circuit also comprises the diode D2 that regulates heated condition power, and described diode D2 is in parallel with overtemperature K switch 2.
4. a kind of control circuit that the electric food warmer state is selected that is used for according to claim 2, it is characterized in that: described control circuit also comprises the heating indicating circuit that is in series by the burner on light L1 and the first current-limiting resistance R1, and by being incubated the insulation indicating circuit that the indicator lamp L2 and the second current-limiting resistance R2 are in series; Described insulation indicating circuit is in parallel with diode D3, described heating indicating circuit connect with diode D1 back and electric calorifie installation HT parallel connection, and described diode D1 and diode D3 are in the relative oppositely installation of circuit Semi-polarity.
5. a kind of control circuit that the electric food warmer state is selected that is used for according to claim 1, it is characterized in that: the temperature of the interior food of corresponding pot courage was 60 ~ 65 ℃ when described insulation K switch 3 was moved, and the temperature of the interior food of correspondence pot courage was 95 ~ 100 ℃ when described overtemperature K switch 2 was moved.
6. one kind has the electric food warmer that state is selected, and comprises control device and pot courage, it is characterized in that: described control device comprises aforesaid right requirement 1 to 5 each described control circuit that is used for the selection of electric food warmer state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206175308U CN201879506U (en) | 2010-11-22 | 2010-11-22 | Control circuit for state selection of electric food warmer and electric food warmer with state selection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206175308U CN201879506U (en) | 2010-11-22 | 2010-11-22 | Control circuit for state selection of electric food warmer and electric food warmer with state selection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201879506U true CN201879506U (en) | 2011-06-29 |
Family
ID=44177024
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206175308U Expired - Lifetime CN201879506U (en) | 2010-11-22 | 2010-11-22 | Control circuit for state selection of electric food warmer and electric food warmer with state selection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201879506U (en) |
-
2010
- 2010-11-22 CN CN2010206175308U patent/CN201879506U/en not_active Expired - Lifetime
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110629 |
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| CX01 | Expiry of patent term |