CN103683190A - Dry burning prevention protection circuit of liquid electric-heating appliance as well as liquid evaporation pan and electric iron - Google Patents
Dry burning prevention protection circuit of liquid electric-heating appliance as well as liquid evaporation pan and electric iron Download PDFInfo
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- CN103683190A CN103683190A CN201210319345.4A CN201210319345A CN103683190A CN 103683190 A CN103683190 A CN 103683190A CN 201210319345 A CN201210319345 A CN 201210319345A CN 103683190 A CN103683190 A CN 103683190A
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Abstract
The invention relates to a dry burning prevention protection circuit of a liquid electric-heating appliance. The dry burning prevention protection circuit is characterized by comprising a PTC thermal protector used for sensing dry burning temperature, wherein the contact point of the PTC thermal protector is connected with the heating control circuit of a heating element. According to the dry burning prevention protection circuit, the PTC thermal protector is adopted as a dry burning prevention temperature controller. After the temperature controller acts, the PTC heating element can be heated, and the double metal sheets of the temperature controller are always in an action state. Even if the dry burning temperature drops, the PTC thermal protector cannot reset. Only a whole power supply circuit is cut off, the PTC thermal protector can reset. Therefore, the dry burning prevention protection circuit cannot be repeatedly switched on and off, and the problem that the temperature controller used as a dry burning prevention device constantly resets in the prior art is solved.
Description
Technical field
The present invention relates to a kind of anti-dry protective circuit for liquid electric heater tool, relate to the vaporizing liquid pot and the electric iron that use this anti-dry protective circuit simultaneously.
Background technology
Anti-dry protective circuit of the prior art generally adopts thermostat to control, and traditional thermostat is when arriving dry combustion method temperature, and circuit is cut off in its action.But after temperature declines, during lower than dry combustion method temperature, thermostat can move again connection circuit.Therefore, the protection of the anti-dry of this thermostat, understands always ceaselessly break-make.Not only cause the waste of resource, and shortened the useful life of thermostat.For example, China Patent No. is 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 arranged on pot relief valve at body top, pressure switch and thermostat, by thermostat, be used for preventing the dry combustion method of pot body, after in pot, water runs out, the temperature of heater can constantly rise, reach the set point of thermostat, thermostat just can cut off the power supply of heater, prevents the dry combustion method of heater to pot body.There is repeatedly the drawback of break-make in technique scheme.
Summary of the invention
Technical problem to be solved by this invention 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 providing.
Another technical problem to be solved by this invention is to provide a kind of vaporizing pot that this anti-dry protective circuit is installed.
A technical problem more to be solved by this invention is to provide a kind of electric iron with this anti-dry protective circuit.
According to the anti-dry protective circuit of a kind of liquid electric heater tool provided by the invention, comprise a PTC thermal protector for perception dry combustion method temperature, described PTC thermal protector is connected with the heating control circuit of heater.
According to the anti-dry protective circuit of a kind of liquid electric heater tool provided by the invention, also there is following attached technical characterictic:
Also be provided with a power supply branch road, described power supply branch road is connected with the PTC heater element in 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 the PTC heater element in described PTC thermal protector.
According to a kind of vaporizing liquid pot provided by the invention; comprise a pot body body, be arranged on pot heater, the heating control circuit being connected with described heater and an anti-dry protective circuit for body body bottom; described anti-dry protective circuit comprises a PTC thermal protector for perception dry combustion method temperature, and described PTC thermal protector is connected with the heating control circuit of heater.
According to a kind of vaporizing liquid pot provided by the invention, also there is following attached technical characterictic:
Also be provided with a biography temperature plate, one end of described biography temperature plate is connected with described heater or is connected with the position of pot body body near described heater, and remainder is away from described pot body body, and described PTC thermal protector is arranged on described biography temperature plate.
In the part away from pot body body of described biography temperature plate, be formed with installing hole and supported hole, described supported hole is provided 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 being cascaded.
According to a kind of electric iron provided by the invention; comprise flatiron and vaporizing pot; described vaporizing pot comprises a pot body body, is arranged on pot heater of body body bottom and the heating control circuit being connected with described heater; on described heater, be provided with PTC thermal protector, described PTC thermal protector is connected with described heating control circuit.
According to electric iron provided by the invention, also have: on described flatiron, be provided with flatiron heating circuit, described flatiron heating circuit is connected with described PTC thermal protector.
Anti-dry protective circuit tool according to a kind of liquid electric heater tool provided by the invention has the following advantages: it is to be provided with a PTC heater element in parallel with contact in ordinary hot protection that the present invention adopts PTC thermal protector, when PTC thermal protector is during in closure state, PTC is in by short circuit state and no-voltage; When heat protection action, after contact disconnects, PTC is upper because there being voltage heating, and this heat makes protector remain open state.Even if dry combustion method temperature declines, it can not reset yet.Only, after cutting off power supply circuits, just can reset.Therefore, anti-dry protective circuit of the present invention can not repeat break-make, has eliminated thermostat in prior art and as anti-dry device, has not stopped the problem resetting.
According to a kind of vaporizing liquid pan provided by the invention, have the following advantages: vaporizing pot of the present invention adopts PTC thermal protector as anti-dry heating temperature controller; 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, extended the useful life of vaporizing pot.
According to a kind of electric iron tool provided by the invention, have the following advantages: because employing has PTC thermal protector as the vaporizing pot of anti-dry heating temperature controller, the longer service life of electric iron.
Accompanying drawing explanation
Fig. 1 is the circuit theory diagrams of an embodiment of the present invention.
Fig. 2 is the circuit theory diagrams of the another kind of embodiment of the present invention.
Fig. 3 is structure chart of the present invention.
Fig. 4 is cutaway view of the present invention.
Embodiment
Referring to Fig. 1, Fig. 3 and Fig. 4; according to the anti-dry protective circuit of a kind of liquid electric heater tool provided by the invention; comprise a PTC thermal protector 1 for 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 present invention is serially connected in the contact of PTC thermal protector 1 11 in the heating control circuit 2 of heater 21; when temperature arrives after dry combustion method temperature; the action of PTC thermal protector; now PTC heater element 12 conductings in PTC thermal protector heating, thus the contact 11 that maintains PTC thermal protector can not reset in operate condition all the time.This PTC thermal protector can be purchased from the market.The present invention, owing to being provided with this PTC thermal protector as anti-dry heating temperature controller, makes not break-make heating repeatedly of heater.Extended the useful life of related device.Anti-dry protective circuit of the present invention not only can be in electric iron, can also be for other liquid electric heater tools such as steam cleaner or insulating pot or coffee machine or deep fryer or electric cookers.Meanwhile, due to more than the PTC resistance value in PTC thermal protector reaches 10K Europe, make load on electrical heated appliance in off-state, after only having dump, PTC cooling, thermal protector contact just can automatically reset; Again switch on power, load just can be resumed operation, so this anti-dry protective circuit is very safe.
Referring to Fig. 1; according to the anti-dry protective circuit of a kind of liquid electric heater tool provided by the invention; 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 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, according to the anti-dry protective circuit of a kind of liquid electric heater tool provided by the invention, be also provided with a lack of water indicator light 4, 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 is also switched on, thereby shows exsiccosis.
Referring to Fig. 1, Fig. 3 and Fig. 4, according to the anti-dry protective circuit of a kind of liquid electric heater tool provided by the invention, described PTC thermal protector 1 is near the dry combustion method of heater 2 district that is rapidly heated.When work in this region under the non-dry-fire condition of system, temperature is lower, and while working under system dry-fire condition, temperature can sharply raise.In liquid electric heater tool, be also provided with the thermostat of other effects, for example, detect the thermostat 22 of heating-up temperature, the operating temperature of this thermostat 22 is generally lower than the operating temperature of PTC thermal protector.Therefore, in the situation that there is dry combustion method, even if thermostat 22, prior to 1 action of PTC thermal protector, still due to 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 to the heater dry combustion method district that is rapidly heated, can meets action needs.
Referring to Fig. 2, in another embodiment providing in the present invention, described power supply branch road 3 is to consist of current-limiting resistance R1 and capacitor C 1, and other structure is identical with above-described embodiment.
Referring to Fig. 1, Fig. 3 and Fig. 4; according to a kind of vaporizing liquid pot provided by the invention; the heating control circuit 2 that comprises a pot body body 5, is arranged on the heater 21 on pot body body 5 and is connected with described heater 21; on described heater 2, be provided with PTC thermal protector 1, 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 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 forms is same as the previously described embodiments, and the present embodiment repeats no more.
Referring to Fig. 3 and Fig. 4; embodiment at a kind of vaporizing liquid pot provided by the invention; also be provided with a biography temperature plate 6; one end 61 of described biography temperature plate 6 is connected with described heater 21 or is connected with the position of pot body body 1 near described heater 21; remainder 62 is away from described pot body body 5, and described PTC thermal protector 1 is arranged on described biography temperature plate 6.Described biography temperature plate 6 can transmit the dry combustion method temperature of heater 2 faster, makes described PTC thermal protector prior to other thermostat action.Thereby meet the needs that PTC thermal protector is rapidly heated.
Referring to Fig. 3 and Fig. 4, in the above-described embodiment providing in the present invention, in the part 62 away from pot body body 5 of described biography temperature plate 6, be formed with installing hole 63, described installing hole 63 is provided 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.
According to a kind of electric iron provided by the invention, comprise flatiron and vaporizing pot, vaporizing pot provides steam for flatiron.Described vaporizing pot is the vaporizing pot described in above-described embodiment.
Referring to Fig. 1, on described flatiron, be provided with flatiron heating circuit, described flatiron heating circuit 7 is connected with described PTC thermal protector 1.Described flatiron heating circuit 7 can be also the power supply of PTC heater element, and therefore, 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. an anti-dry protective circuit for liquid electric heater tool, is characterized in that: comprise a PTC thermal protector for 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: be also provided with a power supply branch road, described power supply branch road is connected with the PTC heater element in 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, 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: be also provided with a lack of water indicator light, described lack of water indicator light is connected with the PTC heater element in described PTC thermal protector.
6. a vaporizing liquid pot; comprise a pot body body, be arranged on the heater on pot body body, the heating control circuit being connected with described heater and anti-dry protective circuit, it is characterized in that: described anti-dry protective circuit is the anti-dry protective circuit described in the claims 1 to 5 arbitrary claim.
7. a kind of vaporizing liquid pot as claimed in claim 6; it is characterized in that: be also provided with a biography temperature plate; one end of described biography temperature plate is connected with described heater or is connected with the position of pot body body near described heater; remainder is away from described pot body body, and described PTC thermal protector is arranged on described biography temperature plate.
8. a kind of vaporizing liquid pot as claimed in claim 6, is characterized in that: in the part away from pot body body of described biography temperature plate, be formed with installing hole, described installing hole is provided 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, is characterized in that: described heating control circuit comprises heat-generating pipe, boiler temperature controller and the thermal fuse-link being cascaded.
10. an electric iron, comprises flatiron and vaporizing pot, it is characterized in that: described vaporizing pot is the vaporizing pot described in the claims 6.
11. a kind of electric iron as claimed in claim 10; it is characterized in that: be also provided with a biography temperature plate; one end of described biography temperature plate is connected with described heater or is connected with the position of pot body body near described heater; remainder is away from described pot body body, and described PTC thermal protector is arranged on described biography temperature plate.
12. a kind of electric iron as claimed in claim 10, is characterized in that: on described flatiron, be provided with flatiron heating circuit, described flatiron heating circuit is connected with described PTC thermal protector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210319345.4A CN103683190B (en) | 2012-08-31 | 2012-08-31 | The anti-dry protection circuit and liquid vaporizing pot and electric iron of a kind of liquid electric heater tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210319345.4A CN103683190B (en) | 2012-08-31 | 2012-08-31 | The anti-dry protection circuit and liquid vaporizing pot and electric iron of a kind of liquid electric heater tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103683190A true CN103683190A (en) | 2014-03-26 |
| CN103683190B CN103683190B (en) | 2018-08-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210319345.4A Expired - Fee Related CN103683190B (en) | 2012-08-31 | 2012-08-31 | The anti-dry protection circuit and liquid vaporizing pot and electric iron of a kind of liquid electric heater tool |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB681356A (en) * | 1949-03-23 | 1952-10-22 | Frank George Jefferies | Improvements in or relating to electrically operated steam generating apparatus and the like |
| CN2714599Y (en) * | 2004-08-16 | 2005-08-03 | 徐建群 | Split industrial electric iron with steam detection mechanism |
| CN101014219A (en) * | 2007-02-05 | 2007-08-08 | 常熟市新力电子器件厂 | Electric heating tube with automatic temperature control and preventing dry burning |
| CN201039466Y (en) * | 2007-04-13 | 2008-03-19 | 美的集团有限公司 | Heating and heat-preserving circuit with PTC element |
| CN201137006Y (en) * | 2007-12-26 | 2008-10-22 | 张平 | Industrial electronic flat-iron vaporization pot |
| CN201331051Y (en) * | 2008-12-03 | 2009-10-21 | 浙江华光电器集团有限公司 | Improved structure for mounting temperature controller of vaporizing pot |
| CN202737441U (en) * | 2012-08-31 | 2013-02-13 | 宁波新乐生活电器有限公司 | Dry burning prevention protective circuit of liquid electric heater, liquid vaporizing pot and electric iron |
-
2012
- 2012-08-31 CN CN201210319345.4A patent/CN103683190B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB681356A (en) * | 1949-03-23 | 1952-10-22 | Frank George Jefferies | Improvements in or relating to electrically operated steam generating apparatus and the like |
| CN2714599Y (en) * | 2004-08-16 | 2005-08-03 | 徐建群 | Split industrial electric iron with steam detection mechanism |
| CN101014219A (en) * | 2007-02-05 | 2007-08-08 | 常熟市新力电子器件厂 | Electric heating tube with automatic temperature control and preventing dry burning |
| CN201039466Y (en) * | 2007-04-13 | 2008-03-19 | 美的集团有限公司 | Heating and heat-preserving circuit with PTC element |
| CN201137006Y (en) * | 2007-12-26 | 2008-10-22 | 张平 | Industrial electronic flat-iron vaporization pot |
| CN201331051Y (en) * | 2008-12-03 | 2009-10-21 | 浙江华光电器集团有限公司 | Improved structure for mounting temperature controller of vaporizing pot |
| CN202737441U (en) * | 2012-08-31 | 2013-02-13 | 宁波新乐生活电器有限公司 | Dry burning prevention protective circuit of liquid electric heater, liquid vaporizing pot and electric iron |
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| CN103683190B (en) | 2018-08-03 |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20170720 Address after: 315000 Zhejiang Province, Ningbo city Haishu District Liyuan Road No. 755 room 437 Applicant after: Ningbo Xinle Holding Group Co.,Ltd. Address before: 315012 Zhejiang Province, Ningbo city Haishu District River Road No. 128 Applicant before: NINGBO XINLE SMALL DOMESTIC APPLIANCE Co.,Ltd. |
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Granted publication date: 20180803 |
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