CN203122149U - Double protective device of heating plate - Google Patents
Double protective device of heating plate Download PDFInfo
- Publication number
- CN203122149U CN203122149U CN 201220734388 CN201220734388U CN203122149U CN 203122149 U CN203122149 U CN 203122149U CN 201220734388 CN201220734388 CN 201220734388 CN 201220734388 U CN201220734388 U CN 201220734388U CN 203122149 U CN203122149 U CN 203122149U
- Authority
- CN
- China
- Prior art keywords
- heat
- generating disc
- temperature controller
- protective device
- heating plate
- 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
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Abstract
The utility model provides a double protective device of a heating plate. The double protective device comprises a microswitch, an insulating board, the heating plate, a fuse wire and an external power source circuit which comprises a primary circuit, a first branch circuit and a second branch circuit. The microswitch is connected on the first branch circuit in series, the second branch switch is connected with the insulating board in series, and the primary circuit is connected with the heating plate and the fuse wire in series. The primary circuit is connected with a temperature controller in series. By means of the structure, the heating plate can be double protected through the cooperation of the fuse wire and the temperature controller. In addition, a user can directly observe the state of the heating plate through a corresponding indicator light. When the double protective device of the heating plate is applied to an electric cooker and other electric heating cookers, when the electric cooker is in a stewing state, the user can always see the stewing state displayed by the indicator light due to the fact that the indicator light, the temperature controller, the heating plate and the insulating board are arranged in the circuit, and the displaying of the indicator is not affected through regulation and control of the temperature controller.
Description
Technical field
The utility model relates to a kind of protective device of heat-generating disc, particularly a kind of double protective device of heat-generating disc.
Background technology
Electric current in the electric cooker commonly used occurs unstable through regular meeting, will cause heat-generating disc to produce too high temperature when electric current becomes big suddenly, damages heat-generating disc easily; Or after heat-generating disc arrives uniform temperature, if do not stop the continuation of its temperature to be risen, namely may burn out heat-generating disc: protect heat-generating disc so protective device need be set.
The protection of heat-generating disc generally realizes by fuse.When the heat-generating disc temperature was too high, fuse will disconnect, thereby made entire circuit not have electric current to flow through, and had stoped the rising of heat-generating disc temperature, thus the protection heat-generating disc., because the sensitivity of fuse is not high, when electric current changes when little, even overheat condition has appearred in heat-generating disc, fuse may not disconnect yet; Perhaps, when fuse disconnected, fracture fully can not disconnect entire circuit, and heat-generating disc just can not stop heating like this, thereby does not also have the effect of protection.As seen, only protect heat-generating disc can not play fully the effect of protection by fuse, become particularly important so the protective device of heat-generating disc improved.
The utility model content
The utility model purpose is in order to overcome the deficiencies in the prior art; a kind of double protective device of heat-generating disc is provided, by the mating reaction of temperature controller and fuse, makes heat-generating disc obtain the protection of two-fold; avoid heat-generating disc to damage, avoid influencing the performance of whole electric cooker.
In order to reach above-mentioned effect, the utility model by the following technical solutions:
A kind of double protective device of heat-generating disc, comprise microswitch, warming plate, heat-generating disc, fuse, an and external power supply circuit, described circuit comprises main line and first branch road, second branch road, serial connection one microswitch on described first branch road, serial connection one warming plate on described second branch road, serial connection one heat-generating disc and a fuse on the described main line; Also be connected in series a temperature controller on the described main line.
As preferably, described temperature controller is connected in series successively with heat-generating disc and is in the same section main line; Also comprise first indicator lamp and the first pressure limiting resistance, described first indicator lamp and first pressure limiting resistance serial connection and in parallel with temperature controller and heat-generating disc.
As preferably, also comprise second indicator lamp and the second pressure limiting resistance, described second indicator lamp and second pressure limiting resistance serial connection and in parallel with warming plate.
As preferably, described temperature controller is equiped with thermal sensitive piece.
Compared with prior art, the utlity model has following beneficial effect:
By said structure, the cooperation of fuse and temperature controller can make heat-generating disc obtain the two-fold protection; Arranging of indicator lamp can allow the user observe the residing state of heat-generating disc more intuitively; When being applied in the electric heating cooking devices such as electric cooker when the utility model, the setting in circuit of indicator lamp, temperature controller, heat-generating disc and warming plate, allow the user when electric cooker etc. is in the state of " boiling ", what see the indicator lamp demonstration all is " boiling " state always, and can not influence the demonstration of indicator lamp because of the regulation and control of temperature controller.
Description of drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structural representation that the utility model is applied to electric cooker;
Fig. 3 is circuit diagram of the present utility model.
Fig. 4 is that the closed magnet steel with disconnection of microswitch operates schematic diagram (having omitted sheet metal on the lever).
Among the figure:
1-pot body; 2-collet; 3-microswitch; 4-temperature controller; 5-thermal sensitive piece; 6-heat-generating disc; 7-warming plate; 8-fuse; 9-portable lamp circuit board; 101-magnet; 102-lever; 1021-sheet metal; 103-press section; 104-magnet; 105-spring.
Now the utility model is described in further detail with specific embodiment by reference to the accompanying drawings.
The specific embodiment
As shown in Figure 2, the utility model is applied in the electric cooker.The double protective device of heat-generating disc described in the utility model is installed between the middle level and collet 2 of electric cooker pot body 1 inner chamber, and the bottom of described electric cooker pot body 1 is uncovered, and is uncovered by 2 sealings of installing collet.As shown in Figure 1, the double protective device of heat-generating disc comprises the circuit of external power supply and is connected in microswitch 3, temperature controller 4, warming plate 7 and fuse 8 in the circuit.
As shown in Figure 3, described circuit comprises main line and first branch road, second branch road.Described main line is connected with extraneous power supply, serial connection one fuse 8 on it, and in same section main line, be connected in series a heat-generating disc 6 and a temperature controller 4 successively, described temperature controller 4 is equiped with thermal sensitive piece 5; Serial connection one microswitch 3 on described first branch road, serial connection one warming plate 7 on described second branch road.In order to allow the user can identify the different conditions of electric cooker, also be provided with the resistance of two indicator lamps and two corresponding configurations at portable lamp circuit board 9.First indicator lamp is the status indicator lamp of cooking, and second indicator lamp is the keeping warm mode indicator lamp.First indicator lamp and first pressure limiting resistance serial connection and in parallel with temperature controller and heat-generating disc, second indicator lamp and second pressure limiting resistance serial connection and in parallel with warming plate.
Ruuning situation of the present utility model is as follows:
Electric cooker is connected with the mains: do not have under the closed situation at microswitch, heat-generating disc is the low-power heating under the restriction of warming plate, and electric cooker enters keeping warm mode; At this moment, the status indicator lamp of cooking does not light, and the keeping warm mode indicator lamp lights, and the expression electric cooker is in keeping warm mode.If closed microswitch, heat-generating disc then is not subjected to the restriction of warming plate, and normally generates heat with self power, and the status indicator lamp of cooking this moment lights, and the keeping warm mode indicator lamp extinguishes, and electric cooker enters the state of cooking; Meanwhile, temperature controller is in service, surpasses rated temperature if the thermal sensitive piece at temperature controller place detects the heat-generating disc temperature, and temperature controller just can automatic disconnection, and heat-generating disc stops heating and begins to cool down, thus the protection heat-generating disc; When the heat-generating disc temperature drops to rated temperature when following, temperature controller reconnects automatically, and heat-generating disc continues normally to generate heat with self power; The disconnection of above-mentioned temperature controller, connection procedure circulate according to actual conditions and carry out, and in this process, the status indicator lamp of cooking can not extinguish, and the status indicator lamp of cooking after meal boils just extinguishes.If temperature controller damages, it can not automatic disconnection when the heat-generating disc temperature surpasses rated temperature, and then fuse disconnects, thus the entire circuit outage, heat-generating disc stops heating, and whole electric cooker decommissions, and heat-generating disc is played the effect of protection.Temperature controller plays the effect that two-fold is protected with cooperating of fuse to heat-generating disc.
As Fig. 2 and shown in Figure 4, the closure of microswitch is that the cooperation by lever 102 and press section 103 realizes.It is external that press section 103 is arranged on electric cooker pot, presses press section 103 and drive lever 102 motions, and the sheet metal 1021 contact microswitch start buttons of correspondence make the microswitch closure on the lever 102, thus connection circuit.And the disconnection of microswitch realizes by magnet steel: after meal boils, the inner container of electric cooker temperature reaches certain high temperature, magnet 101 losss of excitation in the magnet steel, magnet 101 separates with magnet 104, and by the reset response of spring 105, lever 102 trippings reset, sheet metal leaves the start button of microswitch, described start button resets, and namely microswitch disconnects, and electric cooker returns to keeping warm mode; At this moment, the status indicator lamp of cooking extinguishes, and the keeping warm mode indicator lamp lights.
The utility model is not limited to above-mentioned embodiment, if various changes of the present utility model or modification are not broken away from spirit and scope of the present utility model, if these are changed and modification belongs within claim of the present utility model and the equivalent technologies scope, then the utility model also is intended to comprise these changes and change.
Claims (4)
1. the double protective device of a heat-generating disc, comprise microswitch, warming plate, heat-generating disc, fuse, an and external power supply circuit, described circuit comprises main line and first branch road, second branch road, serial connection one microswitch on described first branch road, serial connection one warming plate on described second branch road, serial connection one heat-generating disc and a fuse on the described main line; It is characterized in that, also be connected in series a temperature controller on the described main line.
2. the double protective device of heat-generating disc according to claim 1 is characterized in that, described temperature controller is connected in series successively with heat-generating disc and is in the same section main line; Also comprise first indicator lamp and the first pressure limiting resistance, described first indicator lamp and first pressure limiting resistance serial connection and in parallel with temperature controller and heat-generating disc.
3. the double protective device of heat-generating disc according to claim 1 and 2 is characterized in that, also comprises second indicator lamp and the second pressure limiting resistance, described second indicator lamp and second pressure limiting resistance serial connection and in parallel with warming plate.
4. the double protective device of heat-generating disc according to claim 1 is characterized in that, described temperature controller is equiped with thermal sensitive piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220734388 CN203122149U (en) | 2012-12-27 | 2012-12-27 | Double protective device of heating plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220734388 CN203122149U (en) | 2012-12-27 | 2012-12-27 | Double protective device of heating plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203122149U true CN203122149U (en) | 2013-08-14 |
Family
ID=48930194
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220734388 Expired - Lifetime CN203122149U (en) | 2012-12-27 | 2012-12-27 | Double protective device of heating plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203122149U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108107940A (en) * | 2018-01-31 | 2018-06-01 | 北京国能电池科技股份有限公司 | Temperature regulates and controls integrated control system and battery pack |
-
2012
- 2012-12-27 CN CN 201220734388 patent/CN203122149U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108107940A (en) * | 2018-01-31 | 2018-06-01 | 北京国能电池科技股份有限公司 | Temperature regulates and controls integrated control system and battery pack |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130814 |