CN203885258U - Mechanical-type electric heating pan and heating power control circuit therefor - Google Patents

Mechanical-type electric heating pan and heating power control circuit therefor Download PDF

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Publication number
CN203885258U
CN203885258U CN201420176826.9U CN201420176826U CN203885258U CN 203885258 U CN203885258 U CN 203885258U CN 201420176826 U CN201420176826 U CN 201420176826U CN 203885258 U CN203885258 U CN 203885258U
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China
Prior art keywords
circuit
selecting
temperature controller
diode
culinary
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CN201420176826.9U
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Chinese (zh)
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朱泽春
杨冬林
余星光
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Joyoung Co Ltd
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Joyoung Co Ltd
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Abstract

The utility model discloses a mechanical-type electric heating pan and a heating power control circuit therefor, relates to the technical field of electrical appliances of a kitchen, and solves a problem that the temperature control is not accurate when the electric heating pan carries out the operation of heat preservation. The circuit comprises an AC power supply, a power adjusting circuit and a selection switch S1, wherein the AC power supply, the power adjusting circuit and the selection switch S1 are in series connection. The selection switch S1 comprises a first selection end. The power adjusting circuit comprises a heat preservation circuit. The first selection end is connected with the heat preservation circuit. The heat preservation circuit comprises a main temperature controller K1 and a heating device H1, which are in series connection. The heat preservation circuit also comprises a heat preservation controller K2 which is connected in series between the selection switch S1 and the main temperature controller K1. The disconnecting temperature of the heat preservation controller K2 is from 80 DEG C to 90 DEG C, and the connecting temperature of the heat preservation controller K2 is from 55 DEG C to 65 DEG C. The electric heating pan employs the above heating power control circuit, can achieve the precise control of heat-preservation temperature, reduces the waste of energy sources, is simple in circuit, is low in cost, and is liable to produce and repair.

Description

A kind of mechanical type electric food warmer and heating power control circuit thereof
Technical field
The utility model relates to kitchen appliance technical field, relates in particular to mechanical type electric food warmer and heating power control circuit thereof in kitchen appliance.
Background technology
Electric food warmer in the market mainly adopts electronic type and two kinds of control modes of mechanical type, wherein mechanical type electric food warmer adopts third gear selector switch to regulate heating power more, third gear selector switch comprises total power shelves, half-power shelves and insulation shelves, in the time selecting switching over to insulation shelves, selector switch is communicated with thermal circuit, thermal circuit generally includes the diode of series connection, main temperature controller and heater, when keeping warm mode, electric food warmer is always in half-power heated condition, because temperature control in insulating process is inaccurate, as longer in temperature retention time, the problem that there will be food to become dry, cause the waste of the energy.
Utility model content
Technical problem to be solved in the utility model is to overcome the deficiencies in the prior art and provides a kind of mechanical type electric food warmer, this electric food warmer can realize holding temperature precisely to control, and reduces energy waste, and its circuit is simple, and cost is low, is easy to produce and maintenance.
For achieving the above object, embodiment of the present utility model adopts following technical scheme:
A kind of heating power control circuit, comprise the AC power supplies of series connection, power conditioning circuitry and selector switch S1, described selector switch S1 comprises the first selecting side, described power conditioning circuitry comprises thermal circuit, described the first selecting side is connected with thermal circuit, described thermal circuit comprises main temperature controller K1 and the heater H1 of series connection, described thermal circuit also includes insulation temperature controller K2, described insulation temperature controller K2 is connected between selector switch S1 and main temperature controller K1, the break-off signal of described insulation temperature controller K2 is 80-90 degree, the closed temperature of described insulation temperature controller K2 is 55-65 degree.
Further, between described the first selecting side and AC power supplies, be connected with the first indicating circuit, described the first indicating circuit comprises the first resistance R 1 and the first indicator lamp N1 of series connection, and described the first indicating circuit and thermal circuit are connected in parallel.
Further, described power conditioning circuitry also comprises the first culinary art circuit, described the first culinary art circuit comprises main temperature controller K1 and the heater H1 of series connection, described selector switch S1 comprises the second selecting side, described the second selecting side is connected with the first culinary art circuit, and described selector switch S1 is switched to the first selecting side and the second selecting side and is electrically connected.
Further, described power conditioning circuitry also comprises the second culinary art circuit, described the second culinary art circuit comprises diode D1 and the heater H1 of series connection, described selector switch S1 comprises the 3rd selecting side, described the 3rd selecting side is connected with the diode D1 of the second culinary art circuit, and described selector switch S1 is switched to the first selecting side, the second selecting side and the 3rd selecting side and is electrically connected.
In the utility model embodiment, described thermal circuit also comprises the diode D2 being connected between insulation temperature controller K2 and main temperature controller K1.
In the utility model embodiment, described the first indicating circuit also comprises diode D3, and described diode D3 is contrary with described diode D2 polarity.
In the utility model embodiment, described power conditioning circuitry also comprises the second indicating circuit, described the second indicating circuit comprises diode D4, the second resistance R 2 and the second indicator lamp N2 of series connection, described diode D2 is contrary with described diode D4 polarity, described the second indicating circuit and described the first indicating circuit are connected in parallel, and the input of described the second indicating circuit is between described diode D2 and described main temperature controller K1.
In the utility model embodiment, described power conditioning circuitry also comprises the first culinary art circuit, described the first culinary art circuit comprises main temperature controller K1 and the heater H1 of series connection, described selector switch S1 comprises the second selecting side, described the second selecting side is connected with the first culinary art circuit, and described selector switch S1 is switched to the second selecting side and is electrically connected.
In the utility model embodiment, described power conditioning circuitry also comprises the second culinary art circuit, described the second culinary art circuit comprises diode D1 and the heater H1 of series connection, described selector switch S1 comprises the 3rd selecting side, described the 3rd selecting side is connected with the diode D1 of the second culinary art circuit, and described selector switch S1 is switched to the second selecting side and the 3rd selecting side and is electrically connected.
A kind of mechanical type electric food warmer, comprises control device and pot courage, and described control device comprises the heating power control circuit of the above feature.
The beneficial effects of the utility model:
In the utility model, be incubated temperature controller K2 owing to being provided with between selector switch S1 and main temperature controller K1, and the break-off signal of insulation temperature controller K2 is lower than the break-off signal of main temperature controller K1, the break-off signal of described insulation temperature controller K2 is 80-90 degree, and the closed temperature of described insulation temperature controller K2 is 55-65 degree.In the starting stage of insulating process, when holding temperature is during lower than the closed temperature of insulation temperature controller K2, described heater H1 heating with full power stops heating after holding temperature reaches the temperature when making to be incubated temperature controller K2 and disconnecting; In the time that holding temperature drops to the temperature that makes to be incubated temperature controller K2 closure, described insulation temperature controller K2 is again closed, and heater H1 continues heating.So circulation repeatedly, can realize the accurate control of holding temperature, reduces energy waste, and its circuit is simple, and cost is low, is easy to produce and maintenance.
Brief description of the drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the circuit diagram of the utility model embodiment mono-;
Fig. 2 is the circuit diagram of the utility model embodiment bis-;
Fig. 3 is the circuit diagram of the utility model embodiment tri-.
Detailed description of the invention
With reference to Fig. 1, 2, 3, a kind of heating power control circuit described in the utility model, comprise the AC power supplies of series connection, power conditioning circuitry and selector switch S1, described selector switch S1 comprises the first selecting side, described power conditioning circuitry comprises thermal circuit, in the time that selector switch S1 is switched to insulation shelves by user, described selector switch S1 is electrically connected with described the first selecting side, be that selector switch S1 is electrically connected with thermal circuit, described thermal circuit comprises main temperature controller K1 and the heater H1 of series connection, controlled in order to realize holding temperature, described thermal circuit also includes insulation temperature controller K2, described insulation temperature controller K2 is connected between selector switch S1 and main temperature controller K1, described main temperature controller K1 and insulation temperature controller K2 are closed type, and the break-off signal of insulation temperature controller K2 is lower than the break-off signal of main temperature controller K1, the break-off signal of described insulation temperature controller K2 is made as 80-90 degree by the utility model, the closed temperature of described insulation temperature controller K2 is made as 55-65 degree.In the time that holding temperature is spent lower than 55-65, described insulation temperature controller K2 closure, described heater H1 heating with full power is to holding temperature higher than 80-90 degree, and now, described insulation temperature controller K2 disconnects, and described heater H1 stops heating; When holding temperature drops to 55-65 degree, described insulation temperature controller K2 is again closed, and heater H1 continues heating.So circulation repeatedly, can realize the accurate control of holding temperature, reduces energy waste.
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtaining under creative work prerequisite, all belong to the scope of the utility model protection.
Implement one:
As shown in Figure 1, between described the first selecting side and AC power supplies, be connected with the first indicating circuit in the present embodiment, described the first indicating circuit comprises the first resistance R 1 and the first indicator lamp N1 that are connected in series, in the time that user is incubated operation, described selector switch S1 is electrically connected with the first selecting side, described the first selecting side is connected with thermal circuit and the first indicating circuit, and described the first indicating circuit and thermal circuit are connected in parallel, the duty of the first indicator lamp N1 instruction thermal circuit.
Further, described power conditioning circuitry also comprises the first culinary art circuit, described the first culinary art circuit comprises the main temperature controller K1 and the heater H1 that are connected in series, and described selector switch S1 comprises the second selecting side, and described the second selecting side is connected with the first culinary art circuit.In the time that user need to carry out cooking operation, described selector switch S1 is switched to total power shelves, be that described selector switch S1 is switched to and the first selecting side and the electricity connection of the second selecting side, now, described heater H1 heating with full power, when cooking temp is during higher than the break-off signal of main temperature controller K1, described main temperature controller K1 disconnects, and described heater H1 stops heating; In the time that cooking temp drops to the closed temperature of main temperature controller K1, described main temperature controller K1 closure, described heater H1 continues heating.When the culinary art of electric food warmer total power shelves, described the first selecting side is connected with the first indicating circuit, and described the first indicator lamp N1 indicates the duty of total power shelves all the time.
Further, described power conditioning circuitry also comprises the second culinary art circuit, and described the second culinary art circuit comprises diode D1 and heater H1, and described selector switch S1 comprises the 3rd selecting side, and described the 3rd selecting side is connected with the diode D1 of the second culinary art circuit.In the time that described selector switch S1 is switched to half-power shelves by user, described selector switch S1 is electrically connected with the first selecting side, the second selecting side and the 3rd selecting side, in the starting stage, described main temperature controller K1 is by diode D1 short circuit, described heater H1 heating with full power, when cooking temp is during higher than the break-off signal of main temperature controller K1, described main temperature controller K1 disconnects, now, described heater H1 realizes half-power heating under the effect of diode D2; In the time that cooking temp drops to the closed temperature of main temperature controller K1, described main temperature controller K1 closure, described heater H1 continues heating with full power.
The above electric food warmer is in the time of insulation shelves, total power shelves and the culinary art of half-power shelves, the first indicator lamp N1 in described the first indicating circuit is lit all the time, the present embodiment only need arrange road first indicating circuit, just can realize three kinds of duty instructions of electric food warmer, circuit structure is simple, cost is low, is easy to produce and maintenance.
Embodiment bis-:
As shown in Figure 2, the present embodiment is different from embodiment mono-to be: thermal circuit also comprises the diode D2 being connected between insulation temperature controller K2 and main temperature controller K1, described thermal circuit forms the low-power thermal circuit of half merit intermittent-heating under the effect of diode D2, has greatly saved the energy.
Embodiment tri-:
As shown in Figure 3, the difference of the present embodiment embodiment bis-is, embodiment bis-is connected with the first indicating circuit between described the first selecting side and AC power supplies, user is selecting insulation shelves, when total power shelves and half-power shelves, all the time be all that the duty that completes electric food warmer by the first indicating circuit is indicated, and in the present embodiment, be provided with two-way working indicating, detailed description of the invention is: described the first indicating circuit also comprises diode D3, described diode D3 is contrary with described diode D2 polarity, that is to say, using the sys node of thermal circuit and the first indicating circuit as input, input be connected with the negative electrode of diode D2 and diode D3 respectively or input respectively with the anodic bonding of diode D2 and diode D3.In the time that user is incubated operation, described selector switch S1 is switched to the first selecting side, described the first selecting side is electrically connected with thermal circuit and the first indicating circuit, now, described thermal circuit half-power heating, the duty of described the first indicating circuit low-power instruction thermal circuit, described the first indicator lamp N1 is lit.
Further, described power conditioning circuitry also comprises the second indicating circuit, described the second indicating circuit comprises the diode D4 of series connection, the second resistance R 2 and the second indicator lamp N2, described the second indicating circuit and described the first indicating circuit are connected in parallel, the input of described the second indicating circuit is between described diode D2 and described main temperature controller K1, in this enforcement, described diode D2 and described diode D4 are made as to polarity contrary, that is to say, the input of described the second indicating circuit is connected with the negative electrode of diode D2 and the negative electrode of diode D4 respectively with the input of the anode of diode D2 and the anodic bonding of diode D4 or the second indicating circuit respectively.The setting of diode D4 can solve only has an indicating circuit indicating operating status all the time in the electric food warmer course of work.
Further, described power conditioning circuitry also comprises the first culinary art circuit, described the first culinary art circuit comprises main temperature controller K1 and the heater H1 of series connection, described selector switch S1 comprises the second selecting side, in the time that user carries out the culinary art of total power shelves, described selector switch S1 is switched to the second selecting side and is electrically connected, described second selecting side electrical connection the first culinary art circuit, now, described the first culinary art circuit and the second indicating circuit are connected in parallel, described heater H1 carries out total power under the control of main temperature controller K1 and zero energy adds hot-swap, the duty of described the second indicating circuit instruction total power culinary art, described the second indicator lamp N2 is lit.
Further, described power conditioning circuitry also comprises the second culinary art circuit, described the second culinary art circuit comprises the diode D1 and the heater H1 that are connected in series, described selector switch S1 comprises the 3rd selecting side, described the 3rd selecting side is connected with the diode D1 of the second culinary art circuit, in the time that selector switch S1 is switched to the culinary art of half-power shelves by user, described selector switch S1 is electrically connected with the second selecting side and the 3rd selecting side, the control principle of its heater H1 is identical with the first two embodiment, difference is in the time that the present embodiment electric food warmer half-power shelves are cooked, by the second indicating circuit indicating operating status, described the second indicator lamp N2 is lit.
Technical scheme described in each embodiment is applied to mechanical type electric food warmer above, mechanical type electric food warmer comprises control device and pot courage, on described control device, comprise the heating power control circuit of the above feature, wherein, the total power shelves of electric food warmer can be made as to gruel boiling function, half-power shelves are made as Baoshang function; Or according to actual conditions, electric food warmer function is set.
The above; it is only detailed description of the invention of the present utility model; but protection domain of the present utility model is not limited to this; any be familiar with those skilled in the art the utility model disclose technical scope in; the variation that can expect easily or replacement, within all should being encompassed in protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion with the protection domain of claim.

Claims (10)

1. a heating power control circuit, comprise the AC power supplies of series connection, power conditioning circuitry and selector switch S1, described selector switch S1 comprises the first selecting side, described power conditioning circuitry comprises thermal circuit, described the first selecting side is connected with thermal circuit, described thermal circuit comprises main temperature controller K1 and the heater H1 of series connection, it is characterized in that, described thermal circuit also includes insulation temperature controller K2, described insulation temperature controller K2 is connected between selector switch S1 and main temperature controller K1, the break-off signal of described insulation temperature controller K2 is 80-90 degree, the closed temperature of described insulation temperature controller K2 is 55-65 degree.
2. heating power control circuit according to claim 1, it is characterized in that, between described the first selecting side and AC power supplies, be connected with the first indicating circuit, described the first indicating circuit comprises the first resistance R 1 and the first indicator lamp N1 of series connection, and described the first indicating circuit and thermal circuit are connected in parallel.
3. heating power control circuit according to claim 2, it is characterized in that, described power conditioning circuitry also comprises the first culinary art circuit, described the first culinary art circuit comprises main temperature controller K1 and the heater H1 of series connection, described selector switch S1 comprises the second selecting side, described the second selecting side is connected with the first culinary art circuit, and described selector switch S1 is switched to the first selecting side and the second selecting side and is electrically connected.
4. heating power control circuit according to claim 3, it is characterized in that, described power conditioning circuitry also comprises the second culinary art circuit, described the second culinary art circuit comprises diode D1 and the heater H1 of series connection, described selector switch S1 comprises the 3rd selecting side, described the 3rd selecting side is connected with the diode D1 of the second culinary art circuit, and described selector switch S1 is switched to the first selecting side, the second selecting side and the 3rd selecting side and is electrically connected.
5. heating power control circuit according to claim 2, is characterized in that, described thermal circuit also comprises the diode D2 being connected between insulation temperature controller K2 and main temperature controller K1.
6. heating power control circuit according to claim 5, is characterized in that, described the first indicating circuit also comprises diode D3, and described diode D3 is contrary with described diode D2 polarity.
7. heating power control circuit according to claim 6, it is characterized in that, described power conditioning circuitry also comprises the second indicating circuit, described the second indicating circuit comprises diode D4, the second resistance R 2 and the second indicator lamp N2 of series connection, described diode D2 is contrary with described diode D4 polarity, described the second indicating circuit and described the first indicating circuit are connected in parallel, and the input of described the second indicating circuit is between described diode D2 and described main temperature controller K1.
8. heating power control circuit according to claim 7, it is characterized in that, described power conditioning circuitry also comprises the first culinary art circuit, described the first culinary art circuit comprises main temperature controller K1 and the heater H1 of series connection, described selector switch S1 comprises the second selecting side, described the second selecting side is connected with the first culinary art circuit, and described selector switch S1 is switched to the second selecting side and is electrically connected.
9. heating power control circuit according to claim 8, it is characterized in that, described power conditioning circuitry also comprises the second culinary art circuit, described the second culinary art circuit comprises diode D1 and the heater H1 of series connection, described selector switch S1 comprises the 3rd selecting side, described the 3rd selecting side is connected with the diode D1 of the second culinary art circuit, and described selector switch S1 is switched to the second selecting side and the 3rd selecting side and is electrically connected.
10. a mechanical type electric food warmer, comprises control device and pot courage, it is characterized in that, described control device comprises the heating power control circuit described in the claims 1 to 9 any one.
CN201420176826.9U 2014-04-11 2014-04-11 Mechanical-type electric heating pan and heating power control circuit therefor Active CN203885258U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420176826.9U CN203885258U (en) 2014-04-11 2014-04-11 Mechanical-type electric heating pan and heating power control circuit therefor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420176826.9U CN203885258U (en) 2014-04-11 2014-04-11 Mechanical-type electric heating pan and heating power control circuit therefor

Publications (1)

Publication Number Publication Date
CN203885258U true CN203885258U (en) 2014-10-22

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Application Number Title Priority Date Filing Date
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Country Link
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CP02 Change in the address of a patent holder

Address after: Huaiyin District of Ji'nan City, Shandong Province, 250117 US 999 miles

Patentee after: Joyoung Company Limited

Address before: Xinsha Road, Huaiyin District of Ji'nan city of Shandong Province, No. 12 250118

Patentee before: Joyoung Company Limited

CP02 Change in the address of a patent holder