CN202737441U - Dry burning prevention protective circuit of liquid electric heater, liquid vaporizing pot and electric iron - Google Patents
Dry burning prevention protective circuit of liquid electric heater, liquid vaporizing pot and electric iron Download PDFInfo
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- CN202737441U CN202737441U CN 201220443367 CN201220443367U CN202737441U CN 202737441 U CN202737441 U CN 202737441U CN 201220443367 CN201220443367 CN 201220443367 CN 201220443367 U CN201220443367 U CN 201220443367U CN 202737441 U CN202737441 U CN 202737441U
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- heater
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- thermal protector
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- protective circuit
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Abstract
The utility model relates to a dry burning prevention protective circuit of a liquid electric heater, a liquid vaporizing pot and an electric iron. The dry burning prevention protective circuit of the liquid electric heater comprises a PTC heat protector for sensing the dry burning temperature, wherein contacts of the PTC heat protector are connected with a heating control circuit of a heat generating body. According to the utility model, the PTC heat protector is used as a dry burning prevention temperature controller; when the temperature controller is used, the built-in PTC heat generating body generates heat, so that a bimetallic sheet of the temperature controller is always in a motion state; even if the dry burning temperature decreases, the PTC heat protector is not reset; and only if the whole power supply circuit is cut off, the PTC heat protector is reset. Thus, the dry burning prevention circuit of the utility model is not switched on/off repeatedly, thereby eliminating the problem that in the prior art, the temperature controller as a dry burning prevention device is reset constantly.
Description
Technical field
The utility model relates to a kind of anti-dry protective circuit for the liquid electric heater tool, relates to simultaneously the vaporizing liquid pot and the electric iron that use this anti-dry protective circuit.
Background technology
Anti-dry protective circuit of the prior art generally adopts thermostat to control, and traditional thermostat is when arriving the dry combustion method temperature, and circuit is cut off in its action.But behind drop in temperature, when being lower than the dry combustion method temperature, thermostat can move again the connection circuit.Therefore, ceaselessly break-make is understood always in the protection of the anti-dry of this thermostat.Not only cause the waste of resource, and shortened the useful life of thermostat.For example, China Patent No. is the CN200520102709.9 utility model patent, open day is on October 18th, 2006, a kind of industrial electric iron gasification pot is disclosed, comprise a pot body, bottom of pot body heater, be installed in pot relief valve at body top, pressure switch and thermostat, be used for preventing the dry combustion method of pot body by thermostat, after water runs out in the pot, the temperature of heater can constantly rise, reach the set point of thermostat, thermostat just can cut off the power supply of heater, prevents that heater is to the dry combustion method of pot body.There is repeatedly the drawback of break-make in technique scheme.
The utility model content
Technical problem to be solved in the utility model is to overcome the deficiency of above-mentioned prior art, a kind of not anti-dry protective circuit of break-make and liquid electric heater tool simple in structure repeatedly that provides.
Another technical problem to be solved in the utility model is to provide a kind of vaporizing pot that this anti-dry protective circuit is installed.
An again technical problem to be solved in the utility model is to provide a kind of electric iron with this anti-dry protective circuit.
The anti-dry protective circuit of a kind of liquid electric heater tool that provides according to the utility model comprises that one is used for the PTC thermal protector of perception dry combustion method temperature, and described PTC thermal protector is connected with the heating control circuit of heater.
The anti-dry protective circuit of a kind of liquid electric heater tool that provides according to the utility model also has following attached technical characterictic:
Also be provided with a power supply branch road, described power supply branch road is connected with PTC heater element in the described PTC thermal protector.
Described PTC thermal protector is near the dry combustion method of the heater district that is rapidly heated.
Described power supply branch road is in parallel with the heating control circuit of heater, and it comprises current-limiting resistance R1 or current-limiting circuit R1 and capacitor C 1.
Also be provided with a lack of water indicator light, described lack of water indicator light is connected with PTC heater element in the described PTC thermal protector.
A kind of vaporizing liquid pot that provides according to the utility model; comprise a pot body body, be installed in pot heater, the heating control circuit that is connected with described heater and the anti-dry protective circuit of body body bottom; described anti-dry protective circuit comprises that one is used for the PTC thermal protector of perception dry combustion method temperature, and described PTC thermal protector is connected with the heating control circuit of heater.
A kind of vaporizing liquid pot that provides according to the utility model also has following attached technical characterictic:
Also be provided with one and pass warm plate, an end of described biography temperature plate is connected with described heater or is connected with position near pot body body of described heater, and remainder is away from described pot of body body, and described PTC thermal protector is installed on the described biography temperature plate.
Be formed with installing hole and supported hole on the part away from pot body body of described biography temperature plate, described supported hole is equipped with strutting piece, and the bottom support of described strutting piece is on described pot body body.
Described heating control circuit comprises heat-generating pipe, boiler temperature controller and the thermal fuse-link that is cascaded.
A kind of electric iron that provides according to the utility model; comprise flatiron and vaporizing pot; described vaporizing pot comprises a pot body body, is installed in pot heater of body body bottom and the heating control circuit that is connected with described heater; be provided with the PTC thermal protector on the described heater, described PTC thermal protector is connected with described heating control circuit.
Electric iron according to the utility model provides also has: be provided with the flatiron heating circuit on the described flatiron, described flatiron heating circuit is connected with described PTC thermal protector.
The anti-dry protective circuit of a kind of liquid electric heater tool that provides according to the utility model has following advantage: it is to be provided with a PTC heater element in parallel with the contact in the ordinary hot protection that the utility model adopts the PTC thermal protector, when the PTC thermal protector was in closure state, PTC was in by the short circuit state and no-voltage; When heat protection action, after the contact disconnected, PTC was upper because the voltage heating is arranged, and this heat is so that protector remains open state.Even the dry combustion method drop in temperature, it can not reset yet.Only after cutting off power supply circuits, just can reset.Therefore, anti-dry protective circuit of the present utility model can not repeat break-make, has eliminated thermostat in the prior art and has not stopped the problem that resets as the anti-dry device.
A kind of vaporizing liquid pan that provides according to the utility model has the following advantages: vaporizing pot of the present utility model adopts the PTC thermal protector as anti-dry heating temperature controller; the PTC thermal protector is after action; in the situation that power supply circuits do not cut off; can not reset; thereby prevent that vaporizing pot from heating repeatedly, prolonged the useful life of vaporizing pot.
A kind of electric iron that provides according to the utility model has following advantage: have the PTC thermal protector as the vaporizing pot of anti-dry heating temperature controller, the longer service life of electric iron owing to adopting.
Description of drawings
Fig. 1 is the circuit theory diagrams of a kind of embodiment of the utility model.
Fig. 2 is the circuit theory diagrams of the another kind of embodiment of the utility model.
Fig. 3 is structure chart of the present utility model.
Fig. 4 is cutaway view of the present utility model.
Embodiment
Referring to Fig. 1, Fig. 3 and Fig. 4; the anti-dry protective circuit of a kind of liquid electric heater tool that provides according to the utility model; comprise that one is used for the PTC thermal protector 1 of perception dry combustion method temperature, the contact 11 of described PTC thermal protector 1 is connected with the heating control circuit 2 of heater 21.The utility model is serially connected in the contact 11 of PTC thermal protector 1 in the heating control circuit 2 of heater 21; after temperature arrives the dry combustion method temperature; the action of PTC thermal protector; 12 conductings of PTC heater element and heating in this moment PTC thermal protector, thus the contact 11 of keeping the PTC thermal protector is in operate condition all the time and can reset.This PTC thermal protector can be purchased from the market.The utility model is owing to being provided with this PTC thermal protector as anti-dry heating temperature controller, so that not repeatedly break-make heating of heater.Prolonged the useful life of related device.Anti-dry protective circuit of the present utility model not only can be used for electric iron, can also be used for steam cleaner or insulating pot or coffee machine or other liquid electric heater tools such as deep fryer or electric cooker.Simultaneously, because the PTC resistance value in the PTC thermal protector reaches more than the 10K Europe, so that the load on the electrical heated appliance is in off-state, only have after the dump, the PTC cooling, the thermal protector contact just can automatically reset; Plugged again, load just can be resumed operation, so this anti-dry protective circuit is very safe.
Referring to Fig. 1; the anti-dry protective circuit of a kind of liquid electric heater tool that provides according to the utility model; also be provided with a power supply branch road 3; described power supply branch road 3 is connected with the PTC heater element 12 of described PTC thermal protector 1; described power supply branch road 3 provides power supply for the PTC heater element 12 in the PTC thermal protector; make its continuous heating, and can not reset.Described power supply branch road 3 is in parallel with the heating control circuit 2 of heater 21, and it comprises current-limiting resistance R1, and described current-limiting circuit R1 is connected with the PTC heater element 12 of described PTC thermal protector.
Referring to Fig. 1, the anti-dry protective circuit of a kind of liquid electric heater tool that provides according to the utility model also is provided with a lack of water indicator light 4, and described lack of water indicator light 4 is connected with the power supply branch road 3 of described PTC thermal protector 1.After the action of PTC thermal protector, lack of water indicator light 4 also is switched on, thereby shows exsiccosis.
Referring to Fig. 1, Fig. 3 and Fig. 4, the anti-dry protective circuit of a kind of liquid electric heater tool that provides according to the utility model, described PTC thermal protector 1 is near the dry combustion method of heater 2 district that is rapidly heated.Temperature is lower when work under the non-dry-fire condition of system in this zone, and temperature can sharply raise when working under system's dry-fire condition.Also be provided with the thermostat of other effects in the liquid electric heater tool, for example detect the thermostat 22 of heating-up temperature, the operating temperature of this thermostat 22 generally is lower than the operating temperature of PTC thermal protector.Therefore, in the situation that dry combustion method occurs, even thermostat 22 is prior to 1 action of PTC thermal protector, still because the accumulated temperature effect in the district that is rapidly heated makes 1 action of PTC thermal protector.PTC thermal protector 1 is arranged on the heater dry combustion method district that is rapidly heated, can satisfies the action needs.
Referring to Fig. 2, in another embodiment that the utility model provides, described power supply branch road 3 is to be made of current-limiting resistance R1 and capacitor C 1, and other structure and above-described embodiment are identical.
Referring to Fig. 1, Fig. 3 and Fig. 4; a kind of vaporizing liquid pot that provides according to the utility model; the heating control circuit 2 that comprises a pot body body 5, is installed in the heater 21 on pot body body 5 and is connected with described heater 21; be provided with PTC thermal protector 1 on the described heater 2, the contact 11 of described PTC thermal protector 1 is connected with described heating control circuit 2.Described heating control circuit can be different according to different heating appliances.The present embodiment is a kind of vaporizing pot, and its heating control circuit is comprised of boiler temperature controller 22, heater 21, fuse 23, and described PTC thermal protector 1 is serially connected in the heating control circuit, thereby controls the break-make of described heating control circuit 2.The anti-dry protective circuit that PTC thermal protector in the present embodiment consists of is same as the previously described embodiments, and the present embodiment repeats no more.
Referring to Fig. 3 and Fig. 4; the embodiment of a kind of vaporizing liquid pot that provides at the utility model; also be provided with one and pass warm plate 6; one end 61 of described biography temperature plate 6 is connected with described heater 21 or is connected with position near the pot body body 1 of described heater 21; remainder 62 is away from described pot body body 5, and described PTC thermal protector 1 is installed on the described biography temperature plate 6.Described biography temperature plate 6 can transmit the dry combustion method temperature of heater 2 faster, so that described PTC thermal protector is prior to other thermostat action.Thereby satisfy the needs that the PTC thermal protector is rapidly heated.
Referring to Fig. 3 and Fig. 4, in above-described embodiment that the utility model provides, be formed with installing hole 63 on the part 62 away from pot body body 5 of described biography temperature plate 6, described installing hole 63 is equipped with strutting piece 64, and the bottom support of described strutting piece 64 is on described pot body body 5.Described PTC thermal protector is connected with described strutting piece 64, and described strutting piece 64 plays the effect of support, makes the part 62 away from pot body body 5 of described biography temperature plate 6 be difficult for deforming.
A kind of electric iron according to the utility model provides comprises flatiron and vaporizing pot, and vaporizing pot provides steam for flatiron.Described vaporizing pot is the described vaporizing pot of above-described embodiment.
Referring to Fig. 1, be provided with the flatiron heating circuit on the described flatiron, described flatiron heating circuit 7 is connected with described PTC thermal protector 1.Described flatiron heating circuit 7 also can be the power supply of PTC heater element, and therefore, the PTC heater element can arrange separately current supply circuit, also can use the power supply of flatiron heating circuit, also can adopt the mode of both combinations to power.
Claims (12)
1. the anti-dry protective circuit of a liquid electric heater tool is characterized in that: comprise that one is used for the PTC thermal protector of perception dry combustion method temperature, described PTC thermal protector is connected with the heating control circuit of heater.
2. the anti-dry protective circuit of a kind of liquid electric heater tool as claimed in claim 1 is characterized in that: also be provided with a power supply branch road, described power supply branch road is connected with PTC heater element in the described PTC thermal protector.
3. the anti-dry protective circuit of a kind of liquid electric heater tool as claimed in claim 1 is characterized in that: described PTC thermal protector is near the dry combustion method of the heater district that is rapidly heated.
4. the anti-dry protective circuit of a kind of liquid electric heater tool as claimed in claim 2, it is characterized in that: described power supply branch road is in parallel with the heating control circuit of heater, and it comprises current-limiting resistance R1 or current-limiting circuit R1 and capacitor C 1.
5. the anti-dry protective circuit of a kind of liquid electric heater tool as claimed in claim 2 is characterized in that: also be provided with a lack of water indicator light, described lack of water indicator light is connected with PTC heater element in the described PTC thermal protector.
6. vaporizing liquid pot; comprise a pot body body, be installed in the heater on pot body body, the heating control circuit that is connected with described heater and anti-dry protective circuit, it is characterized in that: described anti-dry protective circuit is the described anti-dry protective circuit of the claims 1 to 5 arbitrary claim.
7. a kind of vaporizing liquid pot as claimed in claim 6; it is characterized in that: also be provided with one and pass warm plate; one end of described biography temperature plate is connected with described heater or is connected with position near the pot body body of described heater; remainder is away from described pot body body, and described PTC thermal protector is installed on the described biography temperature plate.
8. a kind of vaporizing liquid pot as claimed in claim 6, it is characterized in that: be formed with installing hole on the part away from pot body body of described biography temperature plate, described installing hole is equipped with strutting piece, and the bottom support of described strutting piece is on described pot body body.
9. a kind of vaporizing liquid pot as claimed in claim 6, it is characterized in that: described heating control circuit comprises heat-generating pipe, boiler temperature controller and the thermal fuse-link that is cascaded.
10. an electric iron comprises flatiron and vaporizing pot, it is characterized in that: described vaporizing pot is the claims 6 described vaporizing pots.
11. a kind of electric iron as claimed in claim 10; it is characterized in that: also be provided with one and pass warm plate; one end of described biography temperature plate is connected with described heater or is connected with position near the pot body body of described heater; remainder is away from described pot body body, and described PTC thermal protector is installed on the described biography temperature plate.
12. a kind of electric iron as claimed in claim 10 is characterized in that: be provided with the flatiron heating circuit on the described flatiron, described flatiron heating circuit is connected with described PTC thermal protector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220443367 CN202737441U (en) | 2012-08-31 | 2012-08-31 | Dry burning prevention protective circuit of liquid electric heater, liquid vaporizing pot and electric iron |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220443367 CN202737441U (en) | 2012-08-31 | 2012-08-31 | Dry burning prevention protective circuit of liquid electric heater, liquid vaporizing pot and electric iron |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202737441U true CN202737441U (en) | 2013-02-13 |
Family
ID=47663103
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220443367 Expired - Fee Related CN202737441U (en) | 2012-08-31 | 2012-08-31 | Dry burning prevention protective circuit of liquid electric heater, liquid vaporizing pot and electric iron |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202737441U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103683190A (en) * | 2012-08-31 | 2014-03-26 | 宁波新乐生活电器有限公司 | Dry burning prevention protection circuit of liquid electric-heating appliance as well as liquid evaporation pan and electric iron |
-
2012
- 2012-08-31 CN CN 201220443367 patent/CN202737441U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103683190A (en) * | 2012-08-31 | 2014-03-26 | 宁波新乐生活电器有限公司 | Dry burning prevention protection circuit of liquid electric-heating appliance as well as liquid evaporation pan and electric iron |
| CN103683190B (en) * | 2012-08-31 | 2018-08-03 | 宁波新乐控股集团有限公司 | The anti-dry protection circuit and liquid vaporizing pot and electric iron of a kind of liquid electric heater tool |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130213 Termination date: 20180831 |