CN1417543A - Temperature controller for electric liquid heater - Google Patents
Temperature controller for electric liquid heater Download PDFInfo
- Publication number
- CN1417543A CN1417543A CN 02150153 CN02150153A CN1417543A CN 1417543 A CN1417543 A CN 1417543A CN 02150153 CN02150153 CN 02150153 CN 02150153 A CN02150153 A CN 02150153A CN 1417543 A CN1417543 A CN 1417543A
- Authority
- CN
- China
- Prior art keywords
- contact
- thermostat
- liquid heater
- gag lever
- lever post
- 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.)
- Granted
Links
- 239000007788 liquid Substances 0.000 title claims abstract description 18
- 238000005485 electric heating Methods 0.000 claims abstract description 33
- 230000003068 static effect Effects 0.000 claims abstract description 18
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 241001062472 Stokellia anisodon Species 0.000 abstract 1
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000009841 combustion method Methods 0.000 description 4
- 230000004927 fusion Effects 0.000 description 4
- 238000001746 injection moulding Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 108090000565 Capsid Proteins Proteins 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000004079 fireproofing Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002991 molded plastic Substances 0.000 description 1
- 230000017105 transposition Effects 0.000 description 1
Images
Landscapes
- Thermally Actuated Switches (AREA)
- Fuses (AREA)
Abstract
The temperature controller for electric liquid heater includes a casing and a disposable protecting mechainsm, and the disposable protecting mechanism includes position-limiting rod contacted directly or indirectly with the electric heating element, and triggering chip pair connected serially in the power circuit of the electric heating element and including one moving chip and one static chip. The elastic moving chip is normally separated from the static chip and the position-limiting rod has internal end pushes the moving chip, and when the outside end of the position-limiting rod is heated to smelt, it will force the moving chip to contact with the static chip. A skirt film lug may be added to the outside end of the position-limiting rod to speed the release of the moving chip.
Description
Technical field
The present invention relates to a kind of safety device of electrical liquid heater, particularly a kind of thermostat that is used for electrical liquid heater.
Background technology
Electrical liquid heater generally is used for electric heating vessels such as electric kettle, electric coffee kettle, electric cup, usually, for preventing that the phenomenon of aneroid dry combustion method from appearring in electric heater, be provided with the safety device that can when the aneroid dry combustion method, cut off the power supply automatically therein, it also is thermostat, it, and disconnects by the active and static contact that the link gear that is connected with bimetal leaf will be connected on the electric heating loop as temperature-sensing element with bimetal leaf etc., thereby makes the electric heating element outage.Because active and static contact uses the back or might break down under certain situation and can't be disconnected long-term, therefore is necessary to be provided with a backup protection mechanism, disconnects with the power circuit of other mode with electric heating element.For this reason, British patent GB2181598 discloses a kind of thermostat with backup protection mechanism, it includes a temperature-sensitive actuating mechanism, itself and electric heating element heat conduction contact mutually, and with as the contact of control switch to linking, when electric heating element is overheated, this temperature-sensitive actuating mechanism with contact to separately, thereby make the electric heating element outage; It also includes a backup protection mechanism; comprise a spring that compresses in advance; the one end by an operating parts and described switch contact to or another group switch contact to linking to each other; when thermostat normally uses; the other end that one meltable masthead is lived this spring makes it maintain impaction state; the other end of this meltable bar then stretch out outside the thermostat and when mounted with electric heating element heat conduction contact mutually; when overheated and described temperature-sensitive actuating mechanism is malfunctioning when electric heating element; described meltable bar outer end fusion and relatively the thermostat housing outwards slide; therefore described spring is released; order about described operating parts with coupled switch contact to disconnecting, thereby make the electric heating element outage.This design makes thermostat safer reliable, yet also there is defective in it, and wherein requisite preloading spring and coupled operating parts not only make structure more complicated, have also increased assembly difficulty.
Summary of the invention
Technical problem to be solved by this invention is that the thermostat that a kind of structure is more simple, assembling is more convenient is provided at above-mentioned prior art present situation.
Another technical problem to be solved by this invention provides a kind of thermostat more rapidly that disconnects when chance is overheated.
The present invention solves the problems of the technologies described above the technical scheme that is adopted: the thermostat that is used for electrical liquid heater comprises housing and is arranged on wherein disposable protection mechanism; described disposable protection mechanism includes a gag lever post; its outer end when mounted with electric heating element heat conduction contact mutually directly or indirectly; it is characterized in that also comprising one, to be connected on the contact of electric heating element power circuit right; movable contact spring wherein is a flexible member; and under nature, has trend away from the static contact relative with it; and the inner of described gag lever post promptly offsets with this movable contact spring, forces it to contact with static contact.
Can be wholely set a skirt shape thin-walled projection in the outer end of the molten bar of limit quickly because of inclination discharges movable contact spring when making gag lever post meet heat fusing, the outer end portion of meltable bar has been held wherein in its outer end; Described gag lever post and this skirt shape thin-walled projection be integrated through injection molding simply; Described skirt shape thin-walled projection and gag lever post can be individual components, also can be that described skirt shape thin-walled projection is with the housing integrated through injection molding or otherwise be connected as a single entity; Described skirt shape thin-walled projection also can be provided with hole at the peripheral position of contiguous gag lever post outer end, to reduce binding between the two, accelerates the inclination of gag lever post; Described skirt shape thin-walled projection makes meltable bar that enough angles of inclination be arranged to be round table-like for good that a diameter diminishes from inside to outside gradually so that effective space to be provided.
Described gag lever post the inner can offset with its end face and movable contact spring forward, but can discharge movable contact spring because of inclination quickly when making the transposition bar meet heat fusing in its outer end, described gag lever post the inner preferably offsets with its side and movable contact spring side direction, perhaps, the inner face that gag lever post and movable contact spring forward are offseted is designed to an inclined-plane.
Described thermostat also can be provided with conventional reusable temperature-sensitive actuating mechanism, the heat conduction contact mutually of it and electric heating element, and with as the contact of control switch to linking, when electric heating element is overheated, this temperature-sensitive actuating mechanism with contact to separately, thereby make the electric heating element outage.At this moment, i.e. in support the protection mechanism of described disposable protection mechanism.Contact in the described temperature-sensitive actuating mechanism also can be that another is right to contact to being exactly that contact in the described disposable protection mechanism is right.
Compared with prior art, the present invention dexterously with movable contact spring self as pre-deformation device, thereby preloading spring needed in the art and operating parts thereof have been save, therefore structure is more simple, assemble more convenient, and by in the outer end of gag lever post one skirt shape thin-walled projection, then make gag lever post in its outer end and skirt shape thin-walled projection when meeting heat fusing run-off the straight but not relatively housing outwards slide, thereby decontrol movable contact spring quickly, make the reaction of thermostat more sensitive.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention one.
Fig. 2 is the A-A cutaway view of Fig. 1 under the normal condition.
A-A cutaway view when Fig. 3 meets heat fusing for the gag lever post outer end.
Fig. 4 is the structural representation of the embodiment of the invention two.
Fig. 5 is the B-B cutaway view of Fig. 4.
Fig. 6 is the structural representation of the embodiment of the invention three.
Fig. 7 is the C-C cutaway view of Fig. 6 under the normal condition.
Fig. 8 is the meltable bar C-C cutaway view when meeting heat fusing.
Fig. 9 is the back casing front view of embodiment three.
Figure 10 is the D-D cutaway view of Fig. 9.
Embodiment
Embodiment describes in further detail the present invention below in conjunction with accompanying drawing.
As shown in Figure 1, the thermostat that is used for electrical liquid heater comprise housing and be arranged on wherein the temperature-sensitive actuating mechanism and the disposable protection mechanism of reserve;
Housing comprises procapsid 1 and the back casing 2 by fire proofing system that interfixes with screw, is connected with heater 5 by screw during installation;
The temperature-sensitive actuating mechanism comprises N utmost point static contact 9, N utmost point movable contact spring 10, bimetal leaf 3 and push rod thereof (figure is Sino-Japan to be drawn), the N that N utmost point still 9 is riveted on pin 8 extremely goes up, bimetal leaf 3 is fixed on the cap, its outer face contacts with electric heating element 5, when electric heating element is overheated, bimetal leaf 3 distortion are backed down N utmost point movable contact spring 10 by push rod, and N utmost point movable contact spring 10 is separated with N utmost point static contact 9;
The disposable protection mechanism of reserve comprises L utmost point static contact 7, L utmost point movable contact spring 6 and gag lever post 4, the L that L utmost point still 7 is riveted on pin 8 extremely goes up, L utmost point movable contact spring 6 is a flexible member, and has the trend away from the static contact relative with it under nature, referring to Fig. 3; Gag lever post is slidingly fitted in the back casing 2 corresponding holes, and stretch out outside the housing its outer end, and offset with electric heating element 5 when mounted, and its inner promptly offsets with these L utmost point movable contact spring 6 forwards, forces it to contact with L utmost point static contact 7.
When dry combustion method takes place electric heating element 5, and the temperature-sensitive actuating mechanism is when malfunctioning, electric heating element 5 will be seriously overheated, the outer end of gag lever post 4 is with fusion at this moment, because the elastic reaction of L utmost point movable contact spring, gag lever post 4 is pushed outwards, thereby removes the restriction to L utmost point movable contact spring 6, L utmost point movable contact spring is separated with L utmost point static contact 7 under elastic force effect own, thereby the power circuit of electric heating element 5 is disconnected.
As Fig. 4, shown in Figure 5, be embodiments of the invention two, different with embodiment one is that the inner of gag lever post 4 offsets with its side and L utmost point movable contact spring 6 side direction, forces it to contact with L utmost point static contact 7, referring to Fig. 4; Simultaneously, the outer end one of gag lever post 4 is injected with a skirt shape thin-walled projection 41, the outer end portion of gag lever post 4 is held wherein, when mounted, the outer end of gag lever post 4 and skirt shape thin-walled projection 41 tops and electric heating element 5 offset, be round table-like that a diameter diminishes from inside to outside gradually, referring to Fig. 5, and in the present embodiment, the periphery of this skirt shape thin-walled projection 41 and back casing 2 be integrated through injection molding also, also be that back casing 2, skirt shape thin-walled projection 41 and gag lever post 4 are an integral molded plastic spare, and adopt the material of easy fusion;
When dry combustion method takes place electric heating element 5, and the temperature-sensitive actuating mechanism is when malfunctioning, electric heating element 5 will be seriously overheated, the outer end of gag lever post 4 and skirt shape thin-walled projection 41 outer ends are with fusion at this moment, because the elastic reaction of L utmost point movable contact spring 6, gag lever post 4 is pushed to a side and tilts, thereby removes the restriction to L utmost point movable contact spring 6, L utmost point movable contact spring 6 is separated with L utmost point static contact 7 under elastic force effect own, thereby the power circuit of electric heating element 5 is disconnected.
As Fig. 6～shown in Figure 10, be embodiments of the invention three, be that gag lever post 4 is inner to offset with L utmost point movable contact spring 6 forwards with the difference of embodiment two, the end face of gag lever post 4 the inners is an inclined-plane, referring to Fig. 7, like this, in case heat fusing is met in the outer end of gag lever post 4, its the inner is under the elastic reaction of L utmost point movable contact spring 6, will be to lopsidedness, thus L utmost point movable contact spring 6 is separated rapidly with L utmost point static contact 7, referring to Fig. 8;
For gag lever post 4 can be tilted quickly, be provided with hole 41a at the peripheral position of contiguous gag lever post 4 outer ends of skirt shape thin-walled projection 41, with minimizing binding between the two, referring to Fig. 9, Figure 10 when meeting heat fusing in its outer end.
Claims (10)
1, a kind of thermostat that is used for electrical liquid heater; comprise housing and be arranged on wherein disposable protection mechanism; described disposable protection mechanism includes a gag lever post; its outer end when mounted with electric heating element heat conduction contact mutually directly or indirectly; it is characterized in that also comprising one, to be connected on the contact of electric heating element power circuit right; movable contact spring wherein is a flexible member; and under nature, has trend away from the static contact relative with it; and the inner of described gag lever post promptly offsets with this movable contact spring, forces it to contact with static contact.
2, the thermostat that is used for electrical liquid heater according to claim 1 is characterized in that being wholely set a skirt shape thin-walled projection in the outer end of gag lever post, and the outer end portion of gag lever post is held wherein.
3, the thermostat that is used for electrical liquid heater according to claim 2 is characterized in that described skirt shape thin-walled projection is connected as a single entity with housing.
4, the thermostat that is used for electrical liquid heater according to claim 2 is characterized in that described skirt shape thin-walled projection is provided with hole at the peripheral position of contiguous gag lever post outer end.
5, the thermostat that is used for electrical liquid heater according to claim 2 is characterized in that described skirt shape thin-walled projection is round table-like that a diameter diminishes from inside to outside gradually.
6,, it is characterized in that described gag lever post the inner offsets with its side and movable contact spring side direction according to the described thermostat that is used for electrical liquid heater of arbitrary claim in the claim 1 to 5.
7,, it is characterized in that described gag lever post the inner offsets with the movable contact spring forward, and its end face is the inclined-plane according to the described thermostat that is used for electrical liquid heater of arbitrary claim in the claim 1 to 5.
8, according to the described thermostat that is used for electrical liquid heater of arbitrary claim in the claim 1 to 5, it is characterized in that also including conventional reusable temperature-sensitive actuating mechanism, it and electric heating element heat conduction contact mutually, and with as the contact of control switch to linking, when electric heating element is overheated, this temperature-sensitive actuating mechanism with contact to separately, thereby make the electric heating element outage.
9, the thermostat that is used for electrical liquid heater according to claim 8 is characterized in that contact in the described temperature-sensitive actuating mechanism is to being exactly that contact in the described disposable protection mechanism is right.
10, the thermostat that is used for electrical liquid heater according to claim 8, it is characterized in that in the described temperature-sensitive actuating mechanism contact to for contact in the described disposable protection mechanism to beyond, another contact that is connected in the electric heating element power circuit is right.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02150153 CN1211618C (en) | 2002-01-29 | 2002-11-08 | Temperature controller for electric liquid heater |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN02110702.5 | 2002-01-29 | ||
| CN 02110702 CN1374490A (en) | 2002-01-29 | 2002-01-29 | Temperature controller for electrical liquid heater |
| CN 02150153 CN1211618C (en) | 2002-01-29 | 2002-11-08 | Temperature controller for electric liquid heater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1417543A true CN1417543A (en) | 2003-05-14 |
| CN1211618C CN1211618C (en) | 2005-07-20 |
Family
ID=25741115
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02150153 Expired - Fee Related CN1211618C (en) | 2002-01-29 | 2002-11-08 | Temperature controller for electric liquid heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1211618C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110853979A (en) * | 2019-12-02 | 2020-02-28 | 温州千寻电气科技有限公司 | Thermal cut-off device with fusing function |
-
2002
- 2002-11-08 CN CN 02150153 patent/CN1211618C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110853979A (en) * | 2019-12-02 | 2020-02-28 | 温州千寻电气科技有限公司 | Thermal cut-off device with fusing function |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1211618C (en) | 2005-07-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH06507266A (en) | Throw-in heater | |
| EP0994666B1 (en) | Thick Film Electric Heaters | |
| GB2181598A (en) | Thermally-sensitive controls | |
| GB2339088A (en) | Cordless kettle connector with bimetallic overtemperature controls | |
| CN1417543A (en) | Temperature controller for electric liquid heater | |
| JPH09147709A (en) | Switch device | |
| EP0950340A1 (en) | Liquid heating apparatus | |
| CN2562703Y (en) | Temperature controller for liquid electric heater | |
| TW202006768A (en) | Switch with thermal breaker and power socket comprising such switch | |
| CN1374490A (en) | Temperature controller for electrical liquid heater | |
| US6057751A (en) | Overheat and overload sensing device | |
| TW202006775A (en) | Method for interrupting power supply to overheating power switch or utilization equipment | |
| WO2001064084A1 (en) | Control for a liquid heating vessels | |
| EP1072048B1 (en) | Improvements relating to thermal controls for electric heating elements | |
| CN201112279Y (en) | Fusing protecting device and liquid heater | |
| CN2525666Y (en) | Temperature controller of liquid electric heater | |
| EP2020012B1 (en) | Thermal control | |
| EP1642309B1 (en) | Improvements relating to thermal control units | |
| CN214175930U (en) | Temperature controller with thermal protection function | |
| GB2204450A (en) | Hydraulic power assisted vehicle steering system | |
| EP1249851B1 (en) | Improvements relating to the control of electric heating elements | |
| US5941374A (en) | Self-adjusting lid switch with dampening element | |
| EP0831506A2 (en) | Thermostat | |
| CN216288186U (en) | Dry-burning protection structure for temperature controller and temperature controller | |
| US20070210892A1 (en) | Surface mount thermostat |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050720 Termination date: 20121108 |