CN2416653Y - Protector of electric heater for aquarium - Google Patents
Protector of electric heater for aquarium Download PDFInfo
- Publication number
- CN2416653Y CN2416653Y CN 00205949 CN00205949U CN2416653Y CN 2416653 Y CN2416653 Y CN 2416653Y CN 00205949 CN00205949 CN 00205949 CN 00205949 U CN00205949 U CN 00205949U CN 2416653 Y CN2416653 Y CN 2416653Y
- Authority
- CN
- China
- Prior art keywords
- microprocessor
- electric heater
- aforementioned
- circuit
- voltage stabilizing
- 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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- Farming Of Fish And Shellfish (AREA)
Abstract
The utility model relates to a protector of an electric heater for an aquarium, which is formed by mainly combining a rectifying circuit, a voltage stabilizing circuit, a microprocessor, an impedance detecting element, a system microprocessor, a temperature detecting element, a heating wire drive circuit and an electric heater. Another microprocessor which is connected with the impedance detecting element is arranged between the voltage stabilizing circuit of the controlling circuit and the system microprocessor. The utility model uses the different impedance value of the impedance detecting element in water and in air for automatically control the electric heater without action power supply when the aquarium has no water.
Description
The safety device of the relevant a kind of aquarium electric heater of the utility model, be meant especially a kind of utilize the impedance detection element in water with airborne different resistance values, be used for controlling automatically aquarium electric heater attonity power supply when anhydrous, to guarantee safe device.
The aquarium that in the past was used for indoor appreciation, for keeping the ideal life environment of raising fish, when the winter temperature of being everlasting is low, be provided with electric heater in the water in aquarium, when water temperature is lower than set point, automatically conducting electric heater power is heated the water in the aquarium and is cut off the electricity supply automatically to setting range again, really tropical fish is had the effect that prevents cold freeze injury.But the safety device of traditional electric heater is to use the critical temperature fuse, such as the Taiwan patent gazette announce No. 361075 announcement.But this fuse can only use once and promptly need renew, and is very inconvenient; Another kind is to use temperature switch as safety device, and the possibility of misoperation is also arranged.Aforementioned two kinds of safety devices change in the water process at aquarium, and regular meeting does not close main power source because of carelessness and causes electric heater to damage yet, and the anxiety of safety is arranged.
Main purpose of the present utility model is the defective that solves aforementioned conventional electric heater safety device, and provide a kind of safety device of aquarium electric heater, its be utilize the impedance detection element in water with air in different resistance values, can start electric heater in water heats, in air, cut off electric heater power, to guarantee safety.
The utility model is achieved in that it is by rectification circuit, voltage stabilizing circuit, microprocessor, impedance detection element, systematic microprocessor, detector unit, heating wire drive circuit and electric heater institute be combined into, wherein AC power produces a direct current voltage via rectification circuit step-down and rectification, the input voltage stabilizing circuit gives filtering and voltage stabilizing, is used for feed system microprocessor and temperature monitoring element and uses; Be preset with the water temperature range of set value in the aforementioned system microprocessor, when the temperature monitoring element compares water temperature and the set point in the aforementioned system microprocessor that is predicted, when being below or above aforementioned set point, to export a control signal, via the unlatching of heating wire drive circuit control electric heater or close; It is characterized in that: be connected with a microprocessor between aforementioned voltage stabilizing circuit and the systematic microprocessor in addition, this microprocessor is connected with an impedance detection element; Be preset with water middle impedance value setting range in the aforementioned microprocessor, the resistance value that arrives when the impedance detection element testing is in setting range the time, aforementioned microprocessor action; If resistance value is outside setting range, then aforementioned microprocessor attonity power supply.
The utility model is a kind of safety device of aquarium electric heater, mainly include rectification circuit, voltage stabilizing circuit, microprocessor, impedance detection element, systematic microprocessor, detector unit, heating wire drive circuit and electric heater institute be combined into, between voltage stabilizing circuit and the systematic microprocessor, be provided with another microprocessor and connect the impedance detection element in its control circuit.Utilize impedance detection element different with air middle impedance value in water, control in the aquarium electric heater attonity power supply when anhydrous automatically.
Other purposes of the present utility model, structure and function, figure and embodiment elaborate with reference to bowing:
Fig. 1 is a circuit block diagram of the present utility model.
Fig. 2 is the circuit diagram of embodiment of the present utility model.
See also Fig. 1, shown in Figure 2, the utility model mainly is by rectification circuit 1, voltage stabilizing circuit 2, microprocessor 3, impedance detection element 4, systematic microprocessor 5, detector unit 6, heating wire drive circuit 7 and 8 be combined intos of electric heater.Wherein, AC power produces the voltage of microprocessor 3 and 4 uses of impedance detection element for its use via rectification circuit 1 step-down and rectification, and microprocessor 3 is preset with the setting range of water middle impedance value, when impedance detection element 4 detected the output of water middle impedance value signal, microprocessor 3 began action; If when detecting the output of airborne resistance value signal, microprocessor 3 attonitys, with reach anhydrous in the time purpose of safety.
Be preset with the water temperature range of set value in the systematic microprocessor 5, be below or above and set when planting the signal input when detector unit 6 predicts water temperature, systematic microprocessor 5 will be exported a control signal, via the unlatching of heating wire drive circuit 7 control electric heaters or close, to reach the purpose of control water temperature.
Claims (1)
1, a kind of safety device of aquarium electric heater, it is by rectification circuit, voltage stabilizing circuit, microprocessor, impedance detection element, systematic microprocessor, detector unit, heating wire drive circuit and electric heater institute be combined into, wherein AC power produces a direct current voltage via rectification circuit step-down and rectification, the input voltage stabilizing circuit gives filtering and voltage stabilizing, is used for feed system microprocessor and temperature monitoring element and uses; Be preset with the water temperature range of set value in the aforementioned system microprocessor, when the temperature monitoring element compares water temperature and the set point in the aforementioned system microprocessor that is predicted, when being below or above aforementioned set point, to export a control signal, via the unlatching of heating wire drive circuit control electric heater or close; It is characterized in that: be connected with a microprocessor between aforementioned voltage stabilizing circuit and the systematic microprocessor in addition, this microprocessor is connected with an impedance detection element; Be preset with water middle impedance value setting range in the aforementioned microprocessor, the resistance value that arrives when the impedance detection element testing is in setting range the time, aforementioned microprocessor action; If resistance value is outside setting range, then aforementioned microprocessor attonity power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00205949 CN2416653Y (en) | 2000-02-28 | 2000-02-28 | Protector of electric heater for aquarium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00205949 CN2416653Y (en) | 2000-02-28 | 2000-02-28 | Protector of electric heater for aquarium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2416653Y true CN2416653Y (en) | 2001-01-24 |
Family
ID=33574025
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00205949 Expired - Fee Related CN2416653Y (en) | 2000-02-28 | 2000-02-28 | Protector of electric heater for aquarium |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2416653Y (en) |
-
2000
- 2000-02-28 CN CN 00205949 patent/CN2416653Y/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 | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |