CN201297776Y - Overvoltage protection circuit of quasi-resonance electromagnet water heater - Google Patents
Overvoltage protection circuit of quasi-resonance electromagnet water heater Download PDFInfo
- Publication number
- CN201297776Y CN201297776Y CNU2008202209929U CN200820220992U CN201297776Y CN 201297776 Y CN201297776 Y CN 201297776Y CN U2008202209929 U CNU2008202209929 U CN U2008202209929U CN 200820220992 U CN200820220992 U CN 200820220992U CN 201297776 Y CN201297776 Y CN 201297776Y
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- water heater
- overvoltage protection
- divider resistance
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- electrically connected
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Abstract
The utility model provides an overvoltage protection circuit of quasi-resonance electromagnet water heater, where the circuit comprises a first divider resistance, one end of which is connected electrically to an anode of a clamping diode and one end of a divider resistance respectively, the cathode of the clamping diode is connected to a DC low-voltage power supply, the other end of the divider resistance is grounded, two ends of the divider resistance are connected to a capacitor in parallel, the anode of the clamping diode is connected to one end of a resistor electrically, the other end of the resistor is connected to a filter capacitor electrically, the other end of the filter capacitor is grounded, the other end of the resistor is an output end of an overvoltage protection signal; the circuit judges whether a water heater works abnormally through sampling the output voltage of the power supply, and outputs an abnormal signal to a smart controller that closes the water heater, in order to protect the water heater for safety of a user, which has simple circuit structure and principle, strong practicability, and works stably with security and reliability.
Description
Technical field
The utility model relates to a kind of water heater holding circuit, specifically, relates to a kind of overvoltage protection circuit for quasi-resonance electromagnetic water heater.
Background technology
Quasi-resonance electromagnet water heater is a kind of water heater that utilizes electromagnetic induction heating for principle, and during work, the logical high frequency electric of acting solenoid producing powerful high frequency magnetic field, and then makes the METAL HEATING PROCESS body produce powerful eddy current and heating acting under the choked flow effect; For guaranteeing the steady operation and the security performance of water heater, make water heater require just very high to the protection of self.
In order to overcome the above problems, people are seeking a kind of desirable technical solution always.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, thereby a kind of overvoltage protection circuit for quasi-resonance electromagnetic water heater of practical, safe and reliable, working stability is provided.
The purpose of this utility model is to realize by following technical scheme:
A kind of overvoltage protection circuit for quasi-resonance electromagnetic water heater; this circuit comprises first divider resistance; described first divider resistance, one end is electrically connected anodal and divider resistance one end of clamp diode respectively; described clamp diode negative pole connects Dc low voltage power supply; described divider resistance other end ground connection; described divider resistance two ends are parallel with an electric capacity; anodal resistance one end that is electrically connected of described clamp diode; the described resistance other end is electrically connected filter capacitor one end; described filter capacitor other end ground connection, the described resistance other end is the overvoltage protection signal output part.
Based on above-mentioned, the described first divider resistance other end is electrically connected full bridge rectifier one output, and described full bridge rectifier two inputs are overvoltage protection signals collecting ends.
Based on above-mentioned, the described first divider resistance other end divides two-way to be electrically connected the negative pole of a diode respectively; The positive pole of two described diodes is electrically connected full bridge rectifier two inputs respectively, and described full bridge rectifier two inputs are overvoltage protection signals collecting ends.
The utility model has substantive distinguishing features and progressive with respect to prior art, specifically, diode D3 negative pole connects+5V, being used for limiting test signal voltage overflows, after resistance R 1, R2, R3 dividing potential drop, when voltage during, diode D3 forward conduction, and then realize the test signal voltage clamper more than or equal to+5V; This circuit is intended to by the output voltage of water heater power supply circuit is sampled; and then judge whether water heater working is unusual; and abnormal signal exported to intelligence controlling device; close water heater by intelligence controlling device; reaching protection water heater and user's purpose of safety, its circuit structure, principle are simple, practical; safe and reliable, working stability.
Description of drawings
Fig. 1 is the circuit theory schematic diagram of the utility model embodiment 1;
Fig. 1 is the circuit theory schematic diagram of the utility model embodiment 2.
The specific embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail:
Embodiment 1
As shown in Figure 1, a kind of overvoltage protection circuit for quasi-resonance electromagnetic water heater, this circuit comprises the first divider resistance R1, the described first divider resistance R1, one end is electrically connected anodal and divider resistance R2 one end of clamp diode D3 respectively, described clamp diode D3 negative pole meets Dc low voltage power supply+5V, described divider resistance R2 other end ground connection, described divider resistance R2 two ends are parallel with a capacitor C 13, anodal resistance R 3 one ends that are electrically connected of described clamp diode D3, described resistance R 3 other ends are electrically connected filter capacitor C14 one end, described filter capacitor C14 other end ground connection, described resistance R 3 other ends are overvoltage protection signal output part SC;
The described first divider resistance R1 other end is an overvoltage protection signals collecting end;
Perhaps, in the present embodiment, based on above-mentioned, the described first divider resistance R1 other end is electrically connected full bridge rectifier DT one output, described full bridge rectifier DT two input electric-connection thermal hydrophone power circuit output end AB, described full bridge rectifier DT two inputs are overvoltage protection signals collecting ends;
Perhaps, in the present embodiment, described full bridge rectifier DT also can be the part of water heater power supply circuit.
As shown in Figure 2,1 difference of present embodiment and embodiment is: the described first divider resistance R1 other end divides two-way to be electrically connected the negative pole of diode D1, D2 respectively; The positive pole of described diode D1, D2 is an overvoltage protection signals collecting end, is used to connect two inputs of the full bridge rectifier of water heater power supply circuit;
Perhaps, in the present embodiment, the positive pole of two described diode D1, D2 is electrically connected full bridge rectifier DT two inputs respectively, described full bridge rectifier DT two input electric-connection thermal hydrophone power circuit output end AB, described full bridge rectifier DT two inputs are overvoltage protection signals collecting ends; Wherein two diodes of diode D1, D2 and full bridge rectifier DT are formed another full bridge rectifier, output city electrical feature DC voltage;
Perhaps, in the present embodiment, described full bridge rectifier DT also can be the part of water heater power supply circuit.
Alternating current input becoming d. c. voltage signal when rectification circuit is worked complete machine; diode D3 negative pole connects+5V; being used for limiting test signal voltage overflows; after capacitor C 13, C14 and resistance R 1, R2, R3 filtering, dividing potential drop current limliting; when voltage during more than or equal to+5V; diode D3 forward conduction to the test signal voltage clamper, and passes through overvoltage protection signal output part SC to intelligence controlling device input overvoltage protection signal.
Should be noted that at last: the voltage signal from resistance R 3 is gathered all has protective effect to under-voltage, overvoltage; This circuit can be used in any electromagnetic heater or the equipment; Above embodiment only is not intended to limit in order to the technical scheme of explanation this patent; Although with reference to preferred embodiment this patent is had been described in detail, those of ordinary skill in the field are to be understood that: still can make amendment or the part technical characterictic is equal to replacement the specific embodiment of the present utility model; And not breaking away from the spirit of technical solutions of the utility model, it all should be encompassed in the middle of the technical scheme scope that the utility model asks for protection.
Claims (4)
1, a kind of overvoltage protection circuit for quasi-resonance electromagnetic water heater; it is characterized in that: this circuit comprises first divider resistance; described first divider resistance, one end is electrically connected anodal and divider resistance one end of clamp diode respectively; described clamp diode negative pole connects Dc low voltage power supply; described divider resistance other end ground connection; described divider resistance two ends are parallel with an electric capacity; anodal resistance one end that is electrically connected of described clamp diode; the described resistance other end is electrically connected filter capacitor one end; described filter capacitor other end ground connection, the described resistance other end is the overvoltage protection signal output part.
2, overvoltage protection circuit for quasi-resonance electromagnetic water heater according to claim 1 is characterized in that: the described first divider resistance other end is electrically connected full bridge rectifier one output, and described full bridge rectifier two inputs are overvoltage protection signals collecting ends.
3, overvoltage protection circuit for quasi-resonance electromagnetic water heater according to claim 1 is characterized in that: the described first divider resistance other end divides two-way to be electrically connected the negative pole of a diode respectively.
4, overvoltage protection circuit for quasi-resonance electromagnetic water heater according to claim 3; it is characterized in that: the positive pole of two described diodes is electrically connected full bridge rectifier two inputs respectively, and described full bridge rectifier two inputs are overvoltage protection signals collecting ends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202209929U CN201297776Y (en) | 2008-11-14 | 2008-11-14 | Overvoltage protection circuit of quasi-resonance electromagnet water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202209929U CN201297776Y (en) | 2008-11-14 | 2008-11-14 | Overvoltage protection circuit of quasi-resonance electromagnet water heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201297776Y true CN201297776Y (en) | 2009-08-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202209929U Expired - Fee Related CN201297776Y (en) | 2008-11-14 | 2008-11-14 | Overvoltage protection circuit of quasi-resonance electromagnet water heater |
Country Status (1)
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| CN (1) | CN201297776Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103796402A (en) * | 2013-11-07 | 2014-05-14 | 福建睿能科技股份有限公司 | Over-voltage and under-voltage protection circuit, electronic ballast and over-voltage and under-voltage detection method thereof |
| CN109085417A (en) * | 2018-08-16 | 2018-12-25 | 珠海英搏尔电气股份有限公司 | The current detection circuit and electric machine controller of direct measuring type Hall sensor |
-
2008
- 2008-11-14 CN CNU2008202209929U patent/CN201297776Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103796402A (en) * | 2013-11-07 | 2014-05-14 | 福建睿能科技股份有限公司 | Over-voltage and under-voltage protection circuit, electronic ballast and over-voltage and under-voltage detection method thereof |
| CN103796402B (en) * | 2013-11-07 | 2016-02-03 | 福建睿能科技股份有限公司 | Over-and under-voltage protective circuit, electric ballast and over-and under-voltage detection method thereof |
| CN109085417A (en) * | 2018-08-16 | 2018-12-25 | 珠海英搏尔电气股份有限公司 | The current detection circuit and electric machine controller of direct measuring type Hall sensor |
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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: 20090826 Termination date: 20131114 |