CN203747376U - Safe water-heating kettle - Google Patents
Safe water-heating kettle Download PDFInfo
- Publication number
- CN203747376U CN203747376U CN201420138164.6U CN201420138164U CN203747376U CN 203747376 U CN203747376 U CN 203747376U CN 201420138164 U CN201420138164 U CN 201420138164U CN 203747376 U CN203747376 U CN 203747376U
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- CN
- China
- Prior art keywords
- pressure sensor
- base
- resistance
- kettle body
- relay
- 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
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Abstract
The utility model provides a safe water-heating kettle which comprises a kettle body and a base. The base is provided with a plug and a kettle body joint. The safe water-heating kettle is characterized in that the safe water-heating kettle further comprises a pressure detection circuit, wherein the pressure detection circuit comprises a pressure sensor, a voltage converter, a triode, a relay, a first resistor and a second resistor; the pressure sensor is arranged on the upper surface of the base; the pressure sensor can sense the case that the kettle body is put on the base; the resistance at the two sides of the pressure sensor increases with the increasing pressure of the pressure sensor; and one end of the pressure sensor is connected with the negative electrode output terminal of the voltage converter and the emitting electrode of the triode. The safe water-heating kettle is simple in structure, easy to realize and produce; meanwhile, the safety of the water-heating kettle can be guaranteed; and the case of heating without water is prevented.
Description
Technical field
The utility model relates to life man electro-technical field, relates in particular to a kind of safe hot-water bottle.
Background technology
Existing hot-water bottle does not have the function of anti-dry, in the time of the boiled Self-disconnecting component wear of kettle, is easy to water to dryout and cause fire.What in prior art, also have carries out pressure detecting, the problem losing efficacy but mechanical switch has fatigue with machinery.
Summary of the invention
The technical problems to be solved in the utility model, is to provide a kind of safe hot-water bottle, solves the problem of existing hot-water bottle anti-dry.
The utility model is achieved in that
A kind of safe hot-water bottle, comprise kettle body and base, described base has plug and kettle body joint, also comprise pressure detection circuit, described pressure detection circuit comprises pressure sensor, electric pressure converter, triode, relay, the first resistance and the second resistance, described pressure sensor is placed in base upper surface, described in the time that kettle body is placed on base, pressure sensor can detect, described pressure sensor is along with the resistance at the increase pressure sensor two ends of pressure also increases, one end of described pressure sensor is connected with the emitter of the cathode output end of electric pressure converter and triode, the other end of described pressure sensor is connected with one end of the first resistance and one end of the second resistance, the other end of described the first resistance is connected with a control end of the cathode output end of electric pressure converter and relay, the other end of described the second resistance is connected with the base stage of triode, the collector electrode of described triode is connected with another control end of relay, two inputs of described electric pressure converter are connected with the plug of base, one output of described relay is connected with a line in plug, another output of described relay is connected with one end of kettle body joint, the other end of described kettle body joint is connected with another line in plug.
The utility model has the advantage of: circuit structure is simple, components and parts are few, and cost is low, and circuit is all at base simultaneously, change base.
Brief description of the drawings
The utility model is further described with reference to the accompanying drawings in conjunction with the embodiments.
Fig. 1 is the structural representation of pressure detection circuit of the present utility model.
Embodiment
Refer to shown in Fig. 1, a kind of safe hot-water bottle, comprises kettle body and base, and base has plug and kettle body joint, and usually, kettle body joint is give prominence to cylindrical, and base is circular.Hot-water bottle also comprises pressure detection circuit, pressure detection circuit comprises pressure sensor U1, electric pressure converter, triode Q1, relay, the first resistance R 1 and the second resistance R 2, pressure sensor U1 is placed in base upper surface, described in the time that kettle body is placed on base, pressure sensor U1 can detect, pressure sensor U1 is along with the resistance at the increase pressure sensor U1 two ends of pressure also increases, one end of pressure sensor U1 is connected with the emitter of the cathode output end of electric pressure converter and triode Q1, the other end of pressure sensor U1 is connected with one end of the first resistance R 1 and one end of the second resistance R 2, one control end of first other end of resistance R 1 and the cathode output end of electric pressure converter and relay is connected, the other end of the second resistance R 2 is connected with the base stage of triode Q1, the collector electrode of described triode Q1 is connected with another control end of relay, two inputs of electric pressure converter are connected with the plug of base, one output of relay is connected with a line in plug, another output of relay is connected with one end of kettle body joint, the other end of kettle body joint is connected with another line in plug.
The utility model in use, in the time that kettle body is heavier, the suffered pressure of pressure sensor U1 is larger, correspondingly, the resistance of pressure sensor U1 is also large, and the voltage at pressure sensor U1 two ends is higher, make triode in conducting state, thereby the input of relay forms the adhesive of path relay, and in kettle body joint, two wires are all charged, can power and kettle body can be heated kettle body.In the time that water burns up soon, kettle body weight is lighter, the pressure of pressure sensor U1 is little, resistance is also little, and both end voltage reduces, and makes triode cut-off, the input of relay opens circuit and makes no longer adhesive of relay, kettle body joint wire and plug disconnect, and kettle body power-off has ensured the safety of kettle body.
When practical application, electric pressure converter uses common switch power converter, can transfer alternating current to direct current, that galvanic output is common is 5V, and what use because the plug of kettle is general is three-pin plug simultaneously, according to the pin of standard triangle plug towards human body, middle pin is when upper, now the pin on the left side is live wire, and preferred, an output of relay is connected with the live wire pin on the above-mentioned left side.
The above execution mode, it is preferred embodiments of the present utility model, be not to limit the utility model practical range, the equivalence of doing according to structure, feature and principle described in the utility model claim therefore all changes or modifies, and all should comprise in the utility model patent claim.
Claims (1)
1. the hot-water bottle of a safety, comprise kettle body and base, described base has plug and kettle body joint, it is characterized in that: also comprise pressure detection circuit, described pressure detection circuit comprises pressure sensor, electric pressure converter, triode, relay, the first resistance and the second resistance, described pressure sensor is placed in base upper surface, described in the time that kettle body is placed on base, pressure sensor can detect, described pressure sensor is along with the resistance at the increase pressure sensor two ends of pressure also increases, one end of described pressure sensor is connected with the emitter of the cathode output end of electric pressure converter and triode, the other end of described pressure sensor is connected with one end of the first resistance and one end of the second resistance, the other end of described the first resistance is connected with a control end of the cathode output end of electric pressure converter and relay, the other end of described the second resistance is connected with the base stage of triode, the collector electrode of described triode is connected with another control end of relay, two inputs of described electric pressure converter are connected with the plug of base, one output of described relay is connected with a line in plug, another output of described relay is connected with one end of kettle body joint, the other end of described kettle body joint is connected with another line in plug.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420138164.6U CN203747376U (en) | 2014-03-26 | 2014-03-26 | Safe water-heating kettle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420138164.6U CN203747376U (en) | 2014-03-26 | 2014-03-26 | Safe water-heating kettle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203747376U true CN203747376U (en) | 2014-07-30 |
Family
ID=51347135
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420138164.6U Expired - Fee Related CN203747376U (en) | 2014-03-26 | 2014-03-26 | Safe water-heating kettle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203747376U (en) |
-
2014
- 2014-03-26 CN CN201420138164.6U patent/CN203747376U/en not_active Expired - Fee Related
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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 |
Granted publication date: 20140730 Termination date: 20150326 |
|
| EXPY | Termination of patent right or utility model |