CN2664039Y - Self-locking electronic thermostat - Google Patents
Self-locking electronic thermostat Download PDFInfo
- Publication number
- CN2664039Y CN2664039Y CN 200320119157 CN200320119157U CN2664039Y CN 2664039 Y CN2664039 Y CN 2664039Y CN 200320119157 CN200320119157 CN 200320119157 CN 200320119157 U CN200320119157 U CN 200320119157U CN 2664039 Y CN2664039 Y CN 2664039Y
- Authority
- CN
- China
- Prior art keywords
- circuit
- self
- temperature control
- resistance
- control device
- 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 - Fee Related
Links
- 239000003990 capacitor Substances 0.000 claims description 7
- 238000001914 filtration Methods 0.000 claims description 3
- 230000000087 stabilizing effect Effects 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 abstract description 3
- 230000000052 comparative effect Effects 0.000 abstract 1
- 230000002349 favourable effect Effects 0.000 abstract 1
- 238000005485 electric heating Methods 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 239000007788 liquid Substances 0.000 description 3
- 239000002184 metal Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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Abstract
The utility model relates to an electric temperature control device, in particular to a self-locking electronic thermostat. The utility model is characterized in that the self-locking electronic thermostat comprises a self-locking circuit, a step-down voltage circuit, a rectifying circuit, a voltage-stabilized wave circuit, a comparative control circuit, a relay driven circuit and a load. The favorable effect of the utility model is that the self-locking electronic thermostat is a thermostat to be applied to a rapid electronic heating pot, is manually opened and automatically cut off, which is low in price, small in volume and high in precision of temperature control, has a long service span and high safety performance and is simple to operate.
Description
Technical field
The utility model relates to a kind of electronic temperature controller, especially relates to a kind of fast electric heating kettle self-locking electronic temperature control device.
Background technology
At present, what the fast electric heating kettle was adopted is mechanical type " bimetallic strip Kick type " temperature control equipment mostly, and its sheet metal exposes, when water boil, boiling water is excessive, easily cause short circuit, and sheet metal is caused corrosion, cause performance to reduce, sometimes, because temperature control precision is not high, the water in the whole electric kettle is boiled dry, and causes damaging electric kettle.And the electronic temperature control device of import, price is very high, and market is difficult to accept.Therefore, their general shortcoming are: the cost height, and serviceable life is short, and poor safety performance is installed trouble, and reliability is low.The Chinese patent net does not have to use the electronic temperature control device at the fast electric heating kettle by retrieval.As: Chinese patent 93201425.9 relates to a kind of electronic temperature control device, it is by working power, the signal comparator circuit, delay circuit and the executive circuit that comprise sensing circuit and standard signal given circuit constitute, the sensing element that is characterized in this temperature controller is to be made of two metallic conductors that are arranged in liquid, and when freezing by liquid and liquid between the two the variation of physical characteristics form dynamic resistance, be a kind of temperature controller that is applied on the refrigeration compressor; And for example Chinese patent 95223022.4 relates to a kind of electronic temperature control device, and suitable especially electric heating shower, electric water boiler are used for temperature controlling and adjusting in ℃ water of normal temperature～100, and warning function is arranged.Form by power circuit, display circuit, warning circuit, regulating circuit.Learn after retrieval: do not have a kind of self-locking electronic temperature control device that is applied on the electric kettle at present.
Summary of the invention
In order to overcome existing fast electric heating kettle temperature control equipment cost height, serviceable life is short, poor safety performance, trouble is installed, the shortcoming that reliability is low, the utility model provides a kind of self-locking electronic temperature control device, this self-locking electronic temperature control device is a kind of artificial unlatching, the temperature controller of automatic cutout, it is low that it has price, and volume is little, the temperature control precision height, long service life, security performance height, advantage simple to operate.
The technical scheme that its technical matters that solves the utility model adopts is: self-locking electronic temperature control device comprises latching circuit, reduction voltage circuit, rectification circuit, filter circuit of pressure-stabilizing, comparison control circuit, relay drive circuit and load, latching circuit is by meeting bond switching K and relay switch J
KBe formed in parallel, when the power turn-on switch, the 220V power supply is through latching circuit J
KArrive load R with K
W-capacitor C-resistance R, rectification circuit comprise by four diode D
1, D
2, D
3, D
4Form rectifier bridge, give rectifier bridge D
1～D
4Step-down is provided, and rectifier bridge is exported full-wave direct current then, by C
1, R
1, D
5, C
2Form voltage stabilizing and filtering circuit, R
2, R
3, R
4, R
5, R
6, C
3, thermistor T
X O, integrated voltage comparator IC forms a more stable circuit, again by R
7, R
9, C
4, R
8, triode Q forms relay drive circuit and breaking circuit, D
6Suppress the discharge of relay J back-pressure, R
WBe the load heat-generating pipe, another termination load of power supply 220V R
WOne end and D
1～D
4One end is formed commutation supply voltage.
The beneficial effects of the utility model are that this self-locking electronic temperature control device is a kind of temperature controller that is applied to the fast electric heating kettle, is a kind of artificial unlatching, the temperature controller of automatic cutout, it is low that it has price, and volume is little, the temperature control precision height, long service life, security performance height, advantage simple to operate.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is an operating circuit principle schematic of the present utility model.
Among the figure: R is a resistance, the D diode, and Q triode, K are switch, worker C is an integrated voltage comparator, R
WBe the load heat-generating pipe, J
KBe relay switch, T
X OBe thermistor, J is a relay.
Embodiment
Referring to Fig. 1, Fig. 2, when meeting bond switching K under user's flicking, make D
1～D
4Rectifier bridge gets, behind filtering voltage regulation, give integrated voltage comparator IC, when 3 pin current potentials were higher than 2 pin more at the beginning, 1 pin was exported high level, the Q transistor base is high level and saturation conduction, relay gets electric closure, when user's hand is taken away, because the self-locking of relay relay, postpone continuous electricity and circuit enters operate as normal, along with heating tube R
WSimultaneously electric the heating, current potential drops to when being lower than 2 pin, integrated voltage comparator IC1 pin output low level, when Q transistor base current potential was lower than 0.6V, triode ended, relay electric-loss, the whole circuit automatic cutout, formation is autotomyed, thereby the artificial temperature controller of opening has been realized the fast electric heating kettle and manually opened, the purpose of outage automatically.
Claims (7)
1, a kind of self-locking electronic temperature control device is characterized in that: self-locking electronic temperature control device is by latching circuit, reduction voltage circuit, rectification circuit, and filter circuit of pressure-stabilizing, comparison control circuit, relay drive circuit and load are formed.
2, self-locking electronic temperature control device according to claim 1 is characterized in that: latching circuit is provided with and meets bond switching K and relay switch J
K
3, self-locking electronic temperature control device according to claim 1, it is characterized in that: reduction voltage circuit is provided with capacitor C, resistance R, and capacitor C and resistance R are in parallel.
4, self-locking electronic temperature control device according to claim 1, it is characterized in that: voltage stabilizing and filtering circuit are provided with capacitor C
1, resistance R
1, diode D
5, capacitor C
2
5, self-locking electronic temperature control device according to claim 1, it is characterized in that: rectification circuit is by four diode D
1, D
2, D
3, D
4Form.
6, self-locking electronic temperature control device according to claim 1, it is characterized in that: more stable circuit is by resistance R
2, resistance R
3, resistance R
4, resistance R
5, resistance R
6, capacitor C
3, thermistor T
X O, integrated voltage comparator IC forms.
7, self-locking electronic temperature control device according to claim 1, it is characterized in that: relay drive circuit and breaking circuit are by resistance R
7, resistance R
9, capacitor C
4, resistance R
8, triode Q forms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320119157 CN2664039Y (en) | 2003-12-15 | 2003-12-15 | Self-locking electronic thermostat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320119157 CN2664039Y (en) | 2003-12-15 | 2003-12-15 | Self-locking electronic thermostat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2664039Y true CN2664039Y (en) | 2004-12-15 |
Family
ID=34347615
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200320119157 Expired - Fee Related CN2664039Y (en) | 2003-12-15 | 2003-12-15 | Self-locking electronic thermostat |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2664039Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101828871A (en) * | 2010-05-20 | 2010-09-15 | 刘昭利 | Electricity-saving health-care water dispenser control device |
| CN110971220A (en) * | 2019-12-12 | 2020-04-07 | 天地伟业技术有限公司 | Hard logic delay trigger |
-
2003
- 2003-12-15 CN CN 200320119157 patent/CN2664039Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101828871A (en) * | 2010-05-20 | 2010-09-15 | 刘昭利 | Electricity-saving health-care water dispenser control device |
| CN110971220A (en) * | 2019-12-12 | 2020-04-07 | 天地伟业技术有限公司 | Hard logic delay trigger |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20041215 Termination date: 20100115 |