CN2406193Y - Water-feed turning-on and power cut-off device for electric water heater - Google Patents
Water-feed turning-on and power cut-off device for electric water heater Download PDFInfo
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- CN2406193Y CN2406193Y CN 99236725 CN99236725U CN2406193Y CN 2406193 Y CN2406193 Y CN 2406193Y CN 99236725 CN99236725 CN 99236725 CN 99236725 U CN99236725 U CN 99236725U CN 2406193 Y CN2406193 Y CN 2406193Y
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Abstract
The utility model relates to a water communicating and power-off device for an electric water heater, which comprises a direct-current power supply circuit providing direct-current working volt for following circuits. The utility model is characterized in that water communicating and power-off device for the electric water heater also comprises a flow guiding device which can be arranged on a water inlet pipe and a water outlet pipe of a water heater, a water-flow inducing circuit which can induce water flow in the flow guiding device, a power switch circuit and a signal detecting and amplifying circuit driving a switch circuit after receiving a signal of the water-flow inducing circuit. The utility model is used, a power supply of the electric water heater is instantly disconnected only by drainage. The water communicating and power-off device for the electric water heater has the advantages of high safety and reliability, high sensitivity of water flow detecting and compact structure.
Description
The utility model relates to a kind of electric heater water flowing breaker device.
Existing electric heater when water flowing is used, all can not cut off the power supply automatically.Have only when electric leakage occurring, earth leakage circuit-breaker disconnects power supply, at this moment, lost efficacy as leakage switch, and will be very dangerous.
The purpose of this utility model provides a kind of when using electric heater, as long as an electric heater water flowing breaker device that discharges water and can immediately the electric heater power supply be disconnected.
In order to achieve the above object, the utility model is achieved in that it is included as the DC power supply circuit that following circuit provides direct-current working volts; It is characterized in that: it comprises that also one can be located at the guiding device of electric heater water inlet pipe and water outlet pipe; One can respond to water flowing water flow sensor circuit in the guiding device; One power switch circuit, signal detection and amplifying circuit that a signal that can receive the current sensor circuit goes the driving power on-off circuit to open after it amplifies.Guiding device comprises body, is located at the current divider that is positioned at water inlet in the body, is located at the cyclone that is positioned at the current divider back in the body and is located at the rotatable band magnetic device that body is positioned at the cyclone back.The current sensor circuit is Hall element P, and Hall element P is close to the tube wall of guiding device.Signal detection and amplifying circuit comprise amplifier IC1a-IC1d, diode D6, D7, resistance R 4-R15 and capacitor C 1, C2; Resistance R 4 with connect with resistance R 5 again after diode D6 connects, whole series circuit meets DC voltage Vcc; The anode of diode D6 is connected with the output of Hall element P, the negative electrode of diode D6 connects the positive input of amplifier IC1a, the positive input of resistance R 5 one termination amplifier IC1a, other end ground connection, the reverse input end of amplifier IC1a is connected with the output of himself, and amplifier IC1a output connects the reverse input end of amplifier IC1b by resistance R 6; Resistance R 7 with meet DC voltage Vcc after resistance R 8 is connected, and its series connection point connects the positive input of amplifier IC1b, the output of amplifier IC1b connects the positive input of amplifier IC1c by resistance R 9, capacitor C 1; The positive input of resistance R 10 1 termination amplifier IC1c, other end ground connection; Resistance R 11 with meet DC voltage Vcc after resistance R 12 is connected, its series connection point connects the reverse input end of amplifier IC1c; The output of amplifier IC1c connects the positive input of amplifier IC1d by diode D7; Resistance R 13 and capacitor C 2 positive inputs of termination amplifier IC1d afterwards in parallel, other end ground connection; Resistance R 15 with meet DC voltage Vcc after resistance R 14 is connected, its series connection point connects the reverse input end of amplifier IC1d, the output of amplifier IC1d connects the input of above-mentioned power switch circuit.Power switch circuit comprises triode BG1, BG2, resistance R 2, R3, diode D5 and relay J 1, J2; Triode BG1, BG2 form composite amplifier, and the base stage of triode BD1 connects the output of amplifier IC1d, the colelctor electrode of resistance R 2 one termination triode BG1, the anode of another termination DC voltage Vdd; The emitter stage of resistance R 3 one termination triode BG2, other end ground connection; After relay J 1, J2 and the diode D5 parallel connection, the anode of a termination DC voltage Vdd, the colelctor electrode of another termination triode BG2, the normally opened contact of relay utmost point J1, J2 connects city's alternating current after the series connection mutually.The band magnetic device is made up of rotating shaft and the band magnetic blade more than 2 that is located in the rotating shaft.
The utility model compared with prior art has following advantage:
1, use the utility model, as long as one discharge water, can be immediately with the heating power supply outage of electric heater, safety, reliable;
2, detect the highly sensitive of current;
3, compact conformation.
Fig. 1 is a circuit block diagram of the present utility model;
Fig. 2 is circuit theory diagrams of the present utility model;
Fig. 3 is the structural representation of guiding device of the present utility model.
Below in conjunction with drawings and Examples the utility model is done further detailed description:
As shown in Figure 1, be included as following circuit the DC power supply circuit of direct-current working volts (4) is provided; As shown in Figure 2, it comprises that also one can be located at the guiding device (5) of water heater water inlet pipe and water outlet pipe; One can respond to water flowing water flow sensor circuit (1) in the guiding device (5); One power switch circuit (3), one receives signal detection and the amplifying circuit (2) that removes driving power on-off circuit (3) behind the signal of current sensor circuit.
As shown in Figure 2, guiding device (5) comprises body (52), be located at the current divider (53) that is positioned at water inlet in the body (52), be located at the cyclone (54) that is positioned at current divider (53) back in the body (52) and be located at the rotatable band magnetic device (51) that body (52) is positioned at cyclone (54) back, in the middle of this enforcement, band magnetic device (51) is by rotating shaft (512) and be located in the rotating shaft (512) 4 band magnetic blades (511) and form; After this magnetic blade (511) can be made blade by plastics, attached in the above one deck magnetic material also can whole be made by magnetic material.
As shown in Figure 3, current sensor circuit (1) is Hall element P, and Hall element P is close to the tube wall of guiding device.Signal detection and amplifying circuit (2) comprise amplifier IC1a-IC1d, diode D6, D7, resistance R 4, R15 and capacitor C 1, C2.Power switch circuit (3) comprises triode BG1, BG2, resistance R 2, R3, diode D5 and relay J 1, J2.During work, be when having water to flow in the guiding device (5), magnetic sheet (511) rotation, Hall element P responds to a field signal and changes into pulse signal output, this pulse high level inputs to the positive input (i.e. 3 pin) of amplifier IC1a by diode D6, during pulses low, diode D6 ends, and low level inputs to the positive input (3 pin) of amplifier IC1a by resistance R 5; Amplifier IC1a is a voltage follower, the output situation that can truly reflect Hall element P, and pass to the reverse input end (6 pin) of amplifier IC1b by resistance R 6, compare with resistance R 7, R8 voltage after partial again, the effect of amplifier IC1b is that the shaping pulse of Hall element P output is differentiated to have only the pulse of certain amplitude to be only effective impulse.Resistance R 9, C1, R10 network are coupled to the effective impulse of the output of IC1b the positive input of IC1c, another effect of this network, be exactly no matter Hall element P output be to continue low level or high level is a non-pulse signal, all can't be coupled to the positive input of IC1c.Be coupled to the pulse signal of positive input of IC1c and resistance R 11, R12 intrinsic standoff ratio after, output is given resistance R 13, capacitor C 2 integrating circuit through diode D7, thereby the positive input at amplifier IC1d obtains a high level, its output also is a high level, this high level inputs to the base stage of triode BG1, triode BG1 conducting, and triode BG2 ends, relay J 1, J2 discharge, and the electric heater power supply is disconnected.Otherwise, do not flow as in guiding device (5), there being water, the non-inductive signal of Hall element P, the output of amplifier IC1d no signal, triode BG1 ends, triode BG2 conducting, relay J 1, J2 adhesive, electric heater is connected power supply.
Claims (6)
1, a kind of electric heater water flowing breaker device is included as the DC power supply circuit that following circuit provides direct-current working volts; It is characterized in that: it comprises that also one can be located at the guiding device (5) of electric heater water inlet pipe and water outlet pipe; One can respond to water flowing water flow sensor circuit (1) in the guiding device (5); One power switch circuit (3), signal detection and amplifying circuit (2) that a signal that can receive current sensor circuit (1) goes driving power on-off circuit (3) to open after it amplifies.
2, electric heater water flowing breaker device according to claim 1, it is characterized in that: guiding device (5) comprises body (52), be located at the current divider (53) that is positioned at water inlet in the body (52), be located at the cyclone (54) that is positioned at current divider (53) back in the body (52) and be located at the rotatable band magnetic device (51) that body (52) is positioned at cyclone (54) back.
3, electric heater water flowing breaker device according to claim 1 and 2, it is characterized in that: current sensor circuit (1) is Hall element P, and Hall element P is close to body (52) outer wall of guiding device (5).
4, electric heater water flowing breaker device according to claim 1 and 2, it is characterized in that: signal detection and amplifying circuit (2) comprise amplifier IC1a-IC1d, diode D6, D7, resistance R 4-R15 and capacitor C 1, C2; Resistance R 4 with connect with resistance R 5 again after diode D6 connects, whole series circuit meets DC voltage Vcc; The anode of diode D6 is connected with the output of Hall element P, the negative electrode of diode D6 connects the positive input of amplifier IC1a, the positive input of resistance R 5 one termination amplifier IC1a, other end ground connection, the reverse input end of amplifier IC1a is connected with the output of himself, and amplifier IC1a output connects the reverse input end of amplifier IC1b by resistance R 6; Resistance R 7 with meet DC voltage Vcc after resistance R 8 is connected, and its series connection point connects the positive input of amplifier IC1b, the output of amplifier IC1b connects the positive input of amplifier IC1c by resistance R 9, capacitor C 1; The positive input of resistance R 10 1 termination amplifier IC1c, other end ground connection; Resistance R 11 with meet DC voltage Vcc after resistance R 12 is connected, its series connection point connects the reverse input end of amplifier IC1c; The output of amplifier IC1c connects the positive input of amplifier IC1d by diode D7; Resistance R 13 and capacitor C 2 positive inputs of termination amplifier IC1d afterwards in parallel, other end ground connection; Resistance R 15 with meet DC voltage Vcc after resistance R 14 is connected, its series connection point connects the reverse input end of amplifier IC1d, the output of amplifier IC1d connects the input of above-mentioned power switch circuit (3).
5, electric heater water flowing breaker device according to claim 1 and 2, it is characterized in that: power switch circuit (3) comprises triode BG1, BG2, resistance R 2, R3, diode D5 and relay J 1, J2; Triode BG1, BG2 form composite amplifier, and the base stage of triode BD1 connects the output of amplifier IC1d, the colelctor electrode of resistance R 2 one termination triode BG1, the anode of another termination DC voltage Vdd; The emitter stage of resistance R 3 one termination triode BG2, other end ground connection; After relay J 1, J2 and the diode D5 parallel connection, the anode of a termination DC voltage Vdd, the colelctor electrode of another termination triode BG2, the normally opened contact of relay utmost point J1, J2 connects city's alternating current after the series connection mutually.
6, electric heater water flowing breaker device according to claim 1 and 2 is characterized in that: band magnetic device (51) is made up of rotating shaft (512) and the band magnetic blade (511) more than 2 that is located in the rotating shaft (512).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99236725 CN2406193Y (en) | 1999-07-20 | 1999-07-20 | Water-feed turning-on and power cut-off device for electric water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99236725 CN2406193Y (en) | 1999-07-20 | 1999-07-20 | Water-feed turning-on and power cut-off device for electric water heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2406193Y true CN2406193Y (en) | 2000-11-15 |
Family
ID=34024502
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99236725 Expired - Fee Related CN2406193Y (en) | 1999-07-20 | 1999-07-20 | Water-feed turning-on and power cut-off device for electric water heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2406193Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102944070A (en) * | 2012-12-12 | 2013-02-27 | 王娇 | Automatic power-off protection device for water heater |
| CN106322774A (en) * | 2016-10-18 | 2017-01-11 | 余姚市嘉荣电子电器有限公司 | Water outlet outage transmission end, water outlet outage receiving end and water outlet outage system |
| CN107157317A (en) * | 2016-03-07 | 2017-09-15 | 广东美的生活电器制造有限公司 | A kind of liquid heating, electric hot water bottle and its anti-dry control method |
-
1999
- 1999-07-20 CN CN 99236725 patent/CN2406193Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102944070A (en) * | 2012-12-12 | 2013-02-27 | 王娇 | Automatic power-off protection device for water heater |
| CN107157317A (en) * | 2016-03-07 | 2017-09-15 | 广东美的生活电器制造有限公司 | A kind of liquid heating, electric hot water bottle and its anti-dry control method |
| CN106322774A (en) * | 2016-10-18 | 2017-01-11 | 余姚市嘉荣电子电器有限公司 | Water outlet outage transmission end, water outlet outage receiving end and water outlet outage system |
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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 |