CN202408472U - Control circuit of electric kettle - Google Patents
Control circuit of electric kettle Download PDFInfo
- Publication number
- CN202408472U CN202408472U CN2011205044898U CN201120504489U CN202408472U CN 202408472 U CN202408472 U CN 202408472U CN 2011205044898 U CN2011205044898 U CN 2011205044898U CN 201120504489 U CN201120504489 U CN 201120504489U CN 202408472 U CN202408472 U CN 202408472U
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- circuit
- water
- control chip
- water level
- control circuit
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Abstract
The utility model discloses a control circuit of an electric kettle, which comprises a master control chip, a power source circuit, a temperature measurement circuit, a displaying circuit and a water level control circuit, wherein output ends of the power source circuit, the temperature measurement circuit, the water level control circuit and the displaying circuit are respectively connected with corresponding ports of the master control chip. The level of water in the kettle can be controlled in real time through the water level control circuit. When the water reaches to the designated water level, a water level probe outputs low level to an input/output (I/O) port of the master control chip, and then the master control chip controls a water level switch to switch off a water inlet device, so that the phenomenon that water overflows out of the kettle because a user forgets to stop water supply can be effectively avoided, and using safety of the kettle can be ensured.
Description
Technical field
The utility model relates to a kind of control circuit of electric kettle.
Background technology
Electric kettle is applied on the tea ceremony widely, and existing electric kettle can be provided with some safeguard measures, and like temperature detection, excessive low water level protection or the like, temperature detection is used to control the water-in-kettle temperature, and excessive low water level protection then prevents dry combustion method.And some electric kettle also can be provided with water supply installation now, just just can directly water filling in kettle, but, the situation that the water spill-over goes out occurs through regular meeting because water level control is set through button, and very inconvenient, and might cause the danger of leaking electricity.
Summary of the invention
The purpose of the utility model provides a kind of control circuit of electric kettle, has added water level control, the situation that the water spill-over goes out when preventing to add water.
The utility model is to realize above-mentioned purpose like this:
A kind of control circuit of electric kettle; Comprise main control chip, power circuit, temperature measurement circuit, display circuit and water-level control circuit, the output of power circuit, temperature measurement circuit, water-level control circuit and display circuit links to each other respectively at the main control chip corresponding ports.
Wherein, said water-level control circuit comprises water level probe, the I/O port that water level probe links to each other with power output end and is connected to main control chip simultaneously through pull-up resistor R26, and water level switch links to each other with another I/O port of main control chip.
Wherein, said temperature measurement circuit comprises temperature sensor, and the output serial connection current-limiting resistance of temperature sensor links to each other with the I/O port of main control chip.
Wherein, said display circuit comprises that charactron shows and indicator lamp shows, charactron shows and the indicator lamp demonstration links to each other with the I/O port of main control chip.
The beneficial effect of the utility model is: can control the water level in the kettle in real time through water-level control circuit; Specify water level in case arrive; I/O port by water level probe output low level to main control chip; Turn-off water feed apparatus by main control chip control water level switch again, can prevent effectively that like this user from forgetting the situation that supplies water and cause the water-in-kettle spill-over to go out of closing, and also can ensure the safety that kettle uses simultaneously.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the utility model is further specified:
Fig. 1 is the circuit theory diagrams of the utility model;
Fig. 2 is the wiring diagram of the utility model.
The specific embodiment
With reference to Fig. 1, Fig. 2; A kind of control circuit of electric kettle; Comprise main control chip, power circuit, temperature measurement circuit, display circuit and water-level control circuit, the output of power circuit, temperature measurement circuit, water-level control circuit and display circuit links to each other respectively at the main control chip corresponding ports.Can control the water level in the kettle in real time through water-level control circuit; Specify water level in case arrive; I/O port by water level probe output low level to main control chip; Turn-off water feed apparatus by main control chip control water level switch again, can prevent effectively that like this user from forgetting the situation that supplies water and cause the water-in-kettle spill-over to go out of closing, and also can ensure the safety that kettle uses simultaneously.
Wherein, said water-level control circuit comprises water level probe, the I/O port that water level probe links to each other with power output end and is connected to main control chip simultaneously through pull-up resistor R26, and water level switch links to each other with another I/O port of main control chip.
Wherein, said temperature measurement circuit comprises temperature sensor, and the output serial connection current-limiting resistance of temperature sensor links to each other with the I/O port of main control chip.
Wherein, said display circuit comprises that charactron shows and indicator lamp shows, charactron shows and the indicator lamp demonstration links to each other with the I/O port of main control chip.
Claims (4)
1. the control circuit of an electric kettle; It is characterized in that: comprise main control chip, power circuit, temperature measurement circuit, display circuit and water-level control circuit, the output of power circuit, temperature measurement circuit, water-level control circuit and display circuit links to each other respectively at the main control chip corresponding ports.
2. the control circuit of a kind of electric kettle according to claim 1; It is characterized in that: said water-level control circuit comprises water level probe and water level switch; The I/O port that water level probe links to each other with power output end and is connected to main control chip simultaneously through pull-up resistor R26, water level switch links to each other with another I/O port of main control chip.
3. the control circuit of a kind of electric kettle according to claim 1, it is characterized in that: said temperature measurement circuit comprises temperature sensor, the output serial connection current-limiting resistance of temperature sensor links to each other with the I/O port of main control chip.
4. the control circuit of a kind of electric kettle according to claim 1 is characterized in that: said display circuit comprises that charactron shows and indicator lamp shows, charactron shows and indicator lamp shows and links to each other with the I/O port of main control chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205044898U CN202408472U (en) | 2011-12-07 | 2011-12-07 | Control circuit of electric kettle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205044898U CN202408472U (en) | 2011-12-07 | 2011-12-07 | Control circuit of electric kettle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202408472U true CN202408472U (en) | 2012-09-05 |
Family
ID=46733267
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205044898U Ceased CN202408472U (en) | 2011-12-07 | 2011-12-07 | Control circuit of electric kettle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202408472U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102525267A (en) * | 2011-12-07 | 2012-07-04 | 张永超 | Control circuit of electric kettle |
| CN103968914A (en) * | 2013-01-26 | 2014-08-06 | 陈宗仁 | Water level detecting mounting method of wireless electric kettle |
-
2011
- 2011-12-07 CN CN2011205044898U patent/CN202408472U/en not_active Ceased
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102525267A (en) * | 2011-12-07 | 2012-07-04 | 张永超 | Control circuit of electric kettle |
| CN103968914A (en) * | 2013-01-26 | 2014-08-06 | 陈宗仁 | Water level detecting mounting method of wireless electric kettle |
| CN103968914B (en) * | 2013-01-26 | 2018-02-23 | 陈宗仁 | A kind of water level detecting installation method of cordless electrothermal kettle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| IW01 | Full invalidation of patent right |
Decision date of declaring invalidation: 20160420 Decision number of declaring invalidation: 28725 Granted publication date: 20120905 |