CN202334963U - Electric heater with water temperature pre-setting and overheating protection functions - Google Patents
Electric heater with water temperature pre-setting and overheating protection functions Download PDFInfo
- Publication number
- CN202334963U CN202334963U CN2011204643971U CN201120464397U CN202334963U CN 202334963 U CN202334963 U CN 202334963U CN 2011204643971 U CN2011204643971 U CN 2011204643971U CN 201120464397 U CN201120464397 U CN 201120464397U CN 202334963 U CN202334963 U CN 202334963U
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- electric heater
- temperature
- water temperature
- switch
- setting
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Abstract
The utility model discloses an electric heater with water temperature pre-setting and overheating protection functions, comprising an electric heater, wherein the electric heater is provided with a temperature sensor and a switch; and the temperature sensor and the switch are connected to a single chip machine U which is connected to a temperature pre-setting device. The electric heater with water temperature pre-setting and overheating protection functions disclosed by the utility model improves the existing electric heater 'heating fast' and increases a module capable of pre-setting the water temperature and realizing overheat protection, so that heating temperature of water can be controlled and the electrical heater can trip automatically when the prospective temperature is achieved; the electrical heater is guaranteed to be safe and convenient in the use process; and the potential safety hazard is reduced.
Description
Technical field
The utility model relates to a kind of electric heater, particularly a kind of electric heater of and overheat protective function preset with water temperature.
Background technology
Electric heater, i.e. immersion heater.It is heater commonly used in the daily life.But immersion heater belongs to high-power electric appliance, and under unattended situation, the inside fire situation of using immersion heater to heat up water to cause is a lot.There are major safety risks in use just because of immersion heater, so dormitory generally as the forbidding article of classifying.The safe handling of immersion heater also is the comparison significant problem of current existence always.
Summary of the invention
For solving the problems of the technologies described above; The utility model provides a kind of electric heater of and overheat protective function preset with water temperature, promptly on conventional electric heating device " immersion heater " basis, with its improvement; Increase and to preset water temperature, overtemperature protection module; Can control the heating water temperature, make it reach automatic trip behind the desired temperature, can guarantee its safe ready in use again, reduce potential safety hazard.
The above-mentioned purpose of the utility model is to realize through such technical scheme: a kind of electric heater of and overheat protective function preset with water temperature; Comprise electric heater; Electric heater is provided with temperature sensor; Electric heater is equipped with switch, and said temperature sensor, switch connect single-chip microcomputer U, and single-chip microcomputer U connects the temperature preinstall apparatus.
Said switch connects alternating current 220V power supply and DC power supply, the closed and disconnected of switch control 220V power supply, DC power supply.
Said temperature preinstall apparatus converts the device of binary number into for decimal system binary-coded decimal, and through converting eight bit into, the temperature preinstall apparatus is provided with charactron with two decimal system binary-coded decimals.
Said temperature sensor adopts AD590.
Said single-chip microcomputer U adopts the MCS-51 single-chip microcomputer.
The electric heater of the utility model a kind of and overheat protective function preset with water temperature, the temperature preinstall apparatus converts the device of binary number into for decimal system binary-coded decimal, by various gate circuits, draws materials easily on the available markets, and is simple in structure.Switch simultaneously control single chip computer+closure and the disconnection of the alternating current 220V power supply of 5V power supply and electric heater.The utility model electric heater, ability predetermined water temperature and automatic trip cause problems such as potential safety hazard and short circuit after can effectively preventing to dryout, and guarantee the safe in utilization of electric heater.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the utility model is described further:
Fig. 1 is the structural representation of the utility model electric heater.
Embodiment
As shown in Figure 1, a kind of electric heater of and overheat protective function preset with water temperature comprises electric heater 1; Electric heater 1 is provided with temperature sensor 2; Electric heater 1 is equipped with switch 3, and said temperature sensor 2, switch 3 connect single-chip microcomputer U, and single-chip microcomputer U connects temperature preinstall apparatus 4.Switch 3 connects alternating current 220V power supply and DC power supply, the closed and disconnected of switch 3 control 220V power supplys, DC power supply.
Switch 3 is used for switching on and off of control single chip computer U and electric heater 1 simultaneously, and when the P0.0 port was low level, to not influence of switch 3, and the P0.0 port was when being high level, and high level is understood trigger switch 3 and become shutoff by conducting.
Single-chip microcomputer U adopts the MCS-51 single-chip microcomputer.
The course of work:
Switch 3 simultaneously control single chip computer U+closure and the disconnection of the alternating current 220V power supply of 5V power supply and electric heater 1.After switch 3 closures, device gets into operating state.At this moment, can want the water temperature that reaches through temperature preinstall apparatus 4 setting.The setting data data are through also preserving among the port P2.0 parallel port input single-chip microcomputer U.
The heating part of electric heater 1 and temperature sensor 2 immerse in the water simultaneously, play the effect of heating and thermometric respectively.In the process of heating; Temperature sensor 2 is input to the water temperature data that record among the single-chip microcomputer U through the P3.0 serial ports at regular intervals; Single-chip microcomputer U receives that whenever a secondary data compares with preset temperature, and when actual measurement water temperature during more than or equal to preset water temperature, then the P0.0 end is changed to high level (default value of P0.0 end is a low level); P0.0 end is connected with switch 3, and the high level that switch 3 receives P0.0 then breaks off when triggering.Therefore, single-chip microcomputer U and electric heater 1 cut off the power supply simultaneously.
Claims (5)
1. the electric heater of and overheat protective function preset with water temperature; Comprise electric heater (1); It is characterized in that: electric heater (1) is provided with temperature sensor (2); Electric heater (1) is equipped with switch (3), and said temperature sensor (2), switch (3) connect single-chip microcomputer U, and single-chip microcomputer U connects temperature preinstall apparatus (4).
2. according to the electric heater of said a kind of and overheat protective function preset with water temperature of claim 1, it is characterized in that: said switch (3) connects alternating current 220V power supply and DC power supply, the closed and disconnected of switch (3) control 220V power supply, DC power supply.
3. according to the electric heater of said a kind of and overheat protective function preset of claim 1 with water temperature; It is characterized in that: said temperature preinstall apparatus (4) converts the device of binary number into for decimal system binary-coded decimal; Through converting eight bit into, temperature preinstall apparatus (4) is provided with charactron with two decimal system binary-coded decimals.
4. according to the electric heater of said a kind of and overheat protective function preset with water temperature of claim 1, it is characterized in that: said temperature sensor (2) adopts AD590.
5. according to the electric heater of said a kind of and overheat protective function preset with water temperature of claim 1, it is characterized in that: said single-chip microcomputer U adopts the MCS-51 single-chip microcomputer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204643971U CN202334963U (en) | 2011-11-22 | 2011-11-22 | Electric heater with water temperature pre-setting and overheating protection functions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204643971U CN202334963U (en) | 2011-11-22 | 2011-11-22 | Electric heater with water temperature pre-setting and overheating protection functions |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202334963U true CN202334963U (en) | 2012-07-11 |
Family
ID=46446925
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204643971U Expired - Fee Related CN202334963U (en) | 2011-11-22 | 2011-11-22 | Electric heater with water temperature pre-setting and overheating protection functions |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202334963U (en) |
-
2011
- 2011-11-22 CN CN2011204643971U patent/CN202334963U/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 | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120711 Termination date: 20121122 |