CN104614575A - Audible and visual warning device for reminding electrified ground wire of electric water heater - Google Patents
Audible and visual warning device for reminding electrified ground wire of electric water heater Download PDFInfo
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- CN104614575A CN104614575A CN201510031499.7A CN201510031499A CN104614575A CN 104614575 A CN104614575 A CN 104614575A CN 201510031499 A CN201510031499 A CN 201510031499A CN 104614575 A CN104614575 A CN 104614575A
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Abstract
The invention discloses an audible and visual warning device for reminding an electrified ground wire of an electric water heater. The device comprises a voltage decrease circuit module, a rectifier circuit module, a time base circuit module and an audible and visual circuit module which are integrated; the audible and visual circuit module comprises a buzzer, an LED and a neon bulb lamp; the buzzer and the LED are integrally connected in series with the time base circuit module, the rectifier circuit module and the voltage decrease circuit module; the neon bulb lamp is connected to the voltage input end of the voltage decrease circuit module. Compared with the prior art, the audible and a visual warning device has the characteristics of being simple in structure and small in size; when the entering current is less than 3mA, the neon bulb lamp is on; when the entering current is more than 3mA, the audible and visual warning device buzzes and flashes to perform comprehensive warning; meanwhile, the audible and visual warning device can bear civil mains voltage in domestic; when in use, the whole audible and visual warning device is directly mounted on the water heater, so that the use is convenient.
Description
Technical field
The present invention relates to electric heater technical field, particularly relating to a kind of for pointing out the acousto-optic alarm for mineral of electric heater ground wire electrification.
Background technology
The safety problem of household appliances is the matter of utmost importance that consumer uses consideration always, and electric heater is as a kind of special electric equipment products, and safety just seems even more important.Electric heater once electric leakage, or causes accessible metal position as inner bag, outer casing electrification because of ground wire electrification, directly can jeopardize the life security of people.
A part of product that existing industry is suitable is " anti-electricity wall " or " electricity-isolation wall " formula electric heater, water inlet pipe and water outlet pipe increases configuration insulation bushing pipe (this part is called Inlet and outlet water insulation tube), Inlet and outlet water insulation tube is by increasing water outlet path, increase resistance, even if inner container of electric water heater or ground wire electrification, also can use water power to force down in safe voltage (36V), can say the program solve electric heater ground wire and inner bag charged time bathing safety problem.But electric heater ground wire or inner bag is charged there is potential safety hazard after all, therefore while guarantee user bathing safety, also should warn user's utensil abnormal charged.
Electrical leakage can cause ground wire electrification, and therefore whether ground wire is charged judges whether electrical equipment leaks electricity in monitoring; But cause ground wire electrification to also have a kind of situation, i.e. so-called " converse electrical leakage ": when other electrical leakage causes ground wire electrification, electric current enters electric heater by common ground is reverse, causes electric heater ground wire electrification.The situation of above-mentioned converse electrical leakage, not only can cause inner container of electric water heater charged, also may jeopardize the safe handling of other electrical equipment of whole family.Therefore, the electric heater warning device tool designing a kind of structure simple, easy for installation is of great significance.
Summary of the invention
The object of the present invention is to provide and a kind ofly warn that thorough, structure is simple, compact, the acousto-optic alarm for mineral that can be set directly on electric heater fuselage.
For reaching above object, the present invention adopts following technical scheme.
A kind of for pointing out the acousto-optic alarm for mineral of electric heater ground wire electrification, it is characterized in that, comprise: the reduction voltage circuit module integrated, rectification circuit module, time base circuit module and acousto-optic circuit module, described acousto-optic circuit module includes hummer, light emitting diode and neon bulb lamp, described hummer and light emitting diode and time base circuit module, rectification circuit module, reduction voltage circuit module are serially connected, and described neon bulb lamp is connected to the voltage input end of reduction voltage circuit module.
Further illustrating as such scheme, described reduction voltage circuit module adopts capacitance decompression, and described electric capacity is high withstand voltage polarity free capacitor, and described capacitance scope is 0.05 μ F ~ 3.3 μ F.
Further illustrating as such scheme, electric capacity is parallel with bleeder resistance, is in series with current-limiting resistance.
Further illustrating as such scheme, described rectification module is rectifier bridge or the integrated circuit rectifier bridge of diode composition, and input AC is become output direct current by rectification module, for time base circuit module provides DC voltage.
Further illustrating as such scheme, has voltage stabilizing diode and filter capacitor at the low pressure output-parallel of rectification module.
Further illustrating as such scheme, described time base circuit for core devices with 555 type timers, controls with RC charge-discharge circuit the low and high level that 555 type timers export certain frequency, carries out song and flash of light to drive hummer and light emitting diode.
Further illustrating as such scheme, the power port of 555 type timers and reseting port connect the output terminal of rectification module;
The electric discharge port of 555 type timers connects the output terminal of rectification module by resistance;
The counting port of 555 type timers is unsettled;
The threshold values port of 555 type timers and triggering port are all connected to one end of charge and discharge electric capacity, the other end ground connection of charge and discharge electric capacity;
Charge and discharge resistance is connected between the threshold value port of 555 type timers and electric discharge port.
Further illustrating as such scheme, described hummer and light emitting diode series connection.
Further illustrating as such scheme, described neon bulb lamp is connected to the voltage input end of reduction voltage circuit module by the current-limiting resistance of series connection.
During application, acousto-optic alarm for mineral is arranged on electric heater, the inner bag of the reduction voltage circuit model calling electric heater of acousto-optic alarm for mineral obtains driving voltage, the acousto-optic circuit module of acousto-optic alarm for mineral is by body of wall ground connection, and acousto-optic circuit module is also connected on the water inlet pipe of electric heater and/or the tube wall of rising pipe by lead-in wire.
Compared with prior art, provided by the invention for pointing out the acousto-optic alarm for mineral of electric heater ground wire electrification to have following beneficial effect:
One, by integrated reduction voltage circuit module, rectification circuit module, time base circuit module and acousto-optic circuit module, structure is simple, compact.Meanwhile, because this acousto-optic alarm for mineral can bear the civilian line voltage of China, during use, directly whole acousto-optic alarm for mineral is arranged on water heater, easy to use.
Two, because acousto-optic circuit module includes hummer, light emitting diode and neon bulb lamp; As below inflow current 3mA, neon bulb lamp is luminous; As more than inflow current 3mA, acousto-optic alarm for mineral sends song and flash of light, and it is thorough to warn.By acousto-optic warning, make user process electrical leakage problems in time rapidly, avoid error shock occurs; And no matter whether user opens electric heater, the acousto-optic alarm for mineral of the inside all can carry out acousto-optic warning, and user can find electric heater leak current fault, reminds in time and avoids using, on-call maintenance.
Three, during application, by the lead-in wire by acousto-optic alarm for mineral connecting wall, branch is connected on the water inlet pipe of electric heater and/or the tube wall of rising pipe, effectively increases the magnitude of current by acousto-optic alarm for mineral, improves acousto-optic intensity further, good warning effect.
Accompanying drawing explanation
Figure 1 shows that acousto-optic alarm for mineral theory diagram provided by the invention;
Figure 2 shows that acousto-optic alarm for mineral power conversion part circuit diagram provided by the invention;
Figure 3 shows that acousto-optic alarm for mineral controlled by sound and light partial circuit figure provided by the invention;
Acousto-optic alarm for mineral application schematic diagram provided by the invention shown in Fig. 4.
Description of reference numerals:
1, shell, 2, inner bag, 3, water inlet pipe, 4, rising pipe, 5, insulation tube, 6, acousto-optic alarm for mineral.
Embodiment
Understand essence of the present invention better for convenience of those of ordinary skill in the art, below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail.
As shown in Figure 1, a kind of for pointing out the acousto-optic alarm for mineral of electric heater ground wire electrification, comprising: reduction voltage circuit module, rectification circuit module, time base circuit module and acousto-optic circuit module; Described acousto-optic circuit module includes hummer, light emitting diode and neon bulb lamp, described hummer and light emitting diode and time base circuit module, rectification circuit module, reduction voltage circuit module are serially connected, and described neon bulb lamp is connected to the voltage input end of reduction voltage circuit module.
As shown in Figure 2, reduction voltage circuit module and rectification circuit module composition power conversion part.Described reduction voltage circuit module adopts high withstand voltage polarity free capacitor C1 step-down, and preferred electric capacity C1 is polypropylene capactive.Electric capacity C1 plays current limliting and the effect of dynamic assignment electric capacity both end voltage, and be 555 type timers, hummer, diode provide suitable low-voltage.At 220Vac, under the power-frequency voltage of 50Hz, the capacity of the every 1 μ F of full-wave rectification pattern is about by 60mA electric current, and the capacity of the every 1 μ F of half wave rectification mode is about by 30mA electric current, capacity voltage dropping circuit should be not less than 3mA by electric current, but also should by not being greater than the electric current of 150mA.Consider the calculating of other components and parts impedances of association, C1 range of capacity is advisable with 0.05 μ F ~ 3.3 μ F.Carry out improving ground, an electric capacity C1 two ends bleeder resistance R1 in parallel, injures the impact of electric capacity instantaneously to reduce current switching; Electric capacity C1 connects a resistance R2, metering function.
Described rectification module is the rectifier bridge of diode D1, D2, D3, D4 composition, input AC is become output direct current, for time base circuit module provides DC voltage.After rectification, low pressure output-parallel voltage stabilizing diode Z carries out voltage stabilizing, and an electrochemical capacitor C3 in parallel carries out filtering, output LOW voltage direct supply VCC after step-down rectifier.
As shown in Figure 3, time base circuit module and acousto-optic circuit module composition controlled by sound and light part.Described time base circuit for core devices with 555 type timers, controls with RC charge-discharge circuit the low and high level that 555 type timers export certain frequency, carries out song and flash of light to drive hummer and light emitting diode.Its effect is that output port exports low and high level with certain frequency, carries out song and flash of light to drive hummer and light emitting diode with certain frequency.Particular circuit configurations is: the power port of 555 type timers and reseting port access high level, counting port is unsettled, threshold values port and triggering port are all connected to charge and discharge electric capacity C2 one end, this one end is connected to the electric discharge port of 555 type timers after being connected in series a resistance R4, the power supply after rectification is also connected on the electric discharge port of 555 type timers after exporting string resistance R3.When threshold values port with when triggering port voltage higher than (2/3) VCC, 555 type timer output end mouths are high level, electric discharge port is low level, electric capacity C2 starts electric discharge, and when being discharged to threshold values end and trigger end voltage lower than (1/3) VCC, output port upset is low level, the port that now discharges is high level, power supply VCC starts to charge to electric capacity C2, until discharge when charging to (2/3) VCC, so circulates again.The output terminal output square wave control hummer of 555 type timers and light emitting diode are with certain frequency sounding and flash of light.
In described acousto-optic circuit module, core component is hummer BUZ1, light emitting diode D1, light emitting diode D2 and neon bulb lamp LP1, LP2.Hummer BUZ1 and light emitting diode D1, D2 series connection, be connected on the output port of 555 type timers, driven by square wave.Especially, for make up acousto-optic alarm for mineral be less than 3mA by electric current time, the shortcoming of the light of hummer sound and light emitting diode sharply exhaustion, neon bulb lamp LP1, LP2 is adopted to connect respectively current-limiting resistance R5, a R6, be attempted by the voltage input end of acousto-optic alarm for mineral, as long as to ensure ground wire electrification, no matter user can be warned under what circumstances.
As shown in Figure 4, during embody rule, acousto-optic alarm for mineral 6 is arranged on electric heater, and the inner bag 2 of the reduction voltage circuit model calling electric heater of acousto-optic alarm for mineral 6 obtains driving voltage, and the acousto-optic circuit module of acousto-optic alarm for mineral 6 is by body of wall ground connection.Electric heater mainly comprises part containing shell 1, inner bag 2, water inlet pipe 3, rising pipe 4 and insulation tube 5.Insulation tube 5 in above-mentioned electric heater structure, " anti-electricity wall " or " electricity-isolation wall " namely in industry product, when its structure can ensure electric heater ground wire electrification, the voltage of water outlet place is lower than safe voltage, can guarantee the safety of bather.Electric heater leak off to inner bag charged time (setting common ground not and the earth connect), or when other electrical leakage causes common ground charged, electric current can will be flow through acousto-optic alarm for mineral and entered body of wall by the reverse inner container of electric water heater leakage current that enters of common ground, form current return, now no matter whether user opens electric heater, and the acousto-optic alarm for mineral of the inside all can carry out acousto-optic warning, and user can find electric heater leak current fault, timely prompting is avoided using, on-call maintenance process.
Especially, for increasing the magnitude of current by acousto-optic alarm for mineral 6, improve acousto-optic intensity further, the lead-in wire of acousto-optic alarm for mineral 6 connecting wall, branch is connected on the water inlet pipe 3 of electric heater and/or the tube wall of rising pipe 4 again, if the pipeline of water inlet pipe and rising pipe mouth of pipe outside is metallic network of pipelines, then acousto-optic warning effect is better.
Above embodiment has been described in detail essence of the present invention, but can not limit protection scope of the present invention with this.Apparently, under the enlightenment of essence of the present invention, the art those of ordinary skill also can carry out many improvement and modification, it should be noted that these improve and modify and all drops within claims of the present invention.
Claims (10)
1. one kind for pointing out the acousto-optic alarm for mineral of electric heater ground wire electrification, it is characterized in that, comprise: the reduction voltage circuit module integrated, rectification circuit module, time base circuit module and acousto-optic circuit module, described acousto-optic circuit module includes hummer, light emitting diode and neon bulb lamp, described hummer and light emitting diode and time base circuit module, rectification circuit module, reduction voltage circuit module are serially connected, and described neon bulb lamp is connected to the voltage input end of reduction voltage circuit module.
2. acousto-optic alarm for mineral according to claim 1, is characterized in that, described reduction voltage circuit module adopts capacitance decompression, and described electric capacity is high withstand voltage polarity free capacitor, and described capacitance scope is 0.05 μ F ~ 3.3 μ F.
3. acousto-optic alarm for mineral according to claim 2, is characterized in that, electric capacity is parallel with bleeder resistance, is in series with current-limiting resistance.
4. acousto-optic alarm for mineral according to claim 1, is characterized in that, described rectification module is rectifier bridge or the integrated circuit rectifier bridge of diode composition, and input AC is become output direct current by rectification module, for time base circuit module provides DC voltage.
5. acousto-optic alarm for mineral according to claim 4, is characterized in that, has voltage stabilizing diode and filter capacitor at the low pressure output-parallel of rectification module.
6. acousto-optic alarm for mineral according to claim 1, it is characterized in that, described time base circuit for core devices with 555 type timers, controls with RC charge-discharge circuit the low and high level that 555 type timers export certain frequency, carries out song and flash of light to drive hummer and light emitting diode.
7. acousto-optic alarm for mineral according to claim 6, is characterized in that, the power port of 555 type timers and reseting port connect the output terminal of rectification module;
The electric discharge port of 555 type timers connects the output terminal of rectification module by resistance;
The counting port of 555 type timers is unsettled;
The threshold values port of 555 type timers and triggering port are all connected to one end of charge and discharge electric capacity, the other end ground connection of charge and discharge electric capacity;
Charge and discharge resistance is connected between the threshold value port of 555 type timers and electric discharge port.
8. acousto-optic alarm for mineral according to claim 1, is characterized in that, described hummer and light emitting diode series connection.
9. acousto-optic alarm for mineral according to claim 1, is characterized in that, described neon bulb lamp is connected to the voltage input end of reduction voltage circuit module by the current-limiting resistance of series connection.
10. acousto-optic alarm for mineral according to claim 1, it is characterized in that, during application, acousto-optic alarm for mineral is arranged on electric heater, the inner bag of the reduction voltage circuit model calling electric heater of acousto-optic alarm for mineral obtains driving voltage, the acousto-optic circuit module of acousto-optic alarm for mineral is by body of wall ground connection, and acousto-optic circuit module is also connected on the water inlet pipe of electric heater and/or the tube wall of rising pipe by lead-in wire.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510031499.7A CN104614575B (en) | 2015-01-21 | 2015-01-21 | A kind of acousto-optic alarm for mineral for prompting electric heater ground wire electrification |
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| CN201510031499.7A CN104614575B (en) | 2015-01-21 | 2015-01-21 | A kind of acousto-optic alarm for mineral for prompting electric heater ground wire electrification |
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| CN104614575B CN104614575B (en) | 2018-08-03 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109828179A (en) * | 2019-04-02 | 2019-05-31 | 佛山市顺德区信辉达电子有限公司 | The ground wire leak current fault indicating circuit of three pole leakage protecting plugs |
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| CN202562057U (en) * | 2012-05-17 | 2012-11-28 | 成都前锋电子有限责任公司 | Gas water heater provided with external CO monitoring and alarming device |
| CN204513744U (en) * | 2015-01-21 | 2015-07-29 | 广东万家乐燃气具有限公司 | A kind of ground wire electrification acousto-optic warning electric heater |
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2015
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| US4572113A (en) * | 1985-02-01 | 1986-02-25 | Baughman George W | Water leak control circuit |
| CN2155529Y (en) * | 1993-01-13 | 1994-02-09 | 项本智 | Leakage cut-out for electric water heater |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109828179A (en) * | 2019-04-02 | 2019-05-31 | 佛山市顺德区信辉达电子有限公司 | The ground wire leak current fault indicating circuit of three pole leakage protecting plugs |
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| CN104614575B (en) | 2018-08-03 |
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