CN105186441A - Water heater - Google Patents
Water heater Download PDFInfo
- Publication number
- CN105186441A CN105186441A CN201510680092.7A CN201510680092A CN105186441A CN 105186441 A CN105186441 A CN 105186441A CN 201510680092 A CN201510680092 A CN 201510680092A CN 105186441 A CN105186441 A CN 105186441A
- Authority
- CN
- China
- Prior art keywords
- circuit
- voltage
- alarm
- detection circuit
- couples
- 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.)
- Pending
Links
Landscapes
- Emergency Protection Circuit Devices (AREA)
Abstract
The invention discloses a water heater; a power line of the water heater is provided with a bidirectional off-limit alarm protector having an alarm protection circuit; the alarm protection circuit can realize commercial power voltage bidirectional off-limit alarming, and comprises a supply circuit, an input voltage circuit, an overvoltage detection circuit, an undervoltage detection circuit, a light alarm circuit, a protection motion circuit and a fault alarm circuit. When the commercial power voltage is higher or lower than a set value, the water heater can carry out acousto-optic alarming, and breaker power supply can be automatically cut off, thus preventing electric appliances from being damaged.
Description
Technical field
The present invention relates to a kind of technical field of water heaters, more particularly, it relates to the water heater of a kind of mains voltage two-way off-limit alarm protection.
Background technology
Water heater just refers to by the various principles of chemistry, makes cold water temperature raise a kind of device becoming hot water within a certain period of time.Electric heater, gas heater, solar water heater, magnetic energy water heater, air-source water heater can be divided into, water heater in central heating etc. according to principle difference.But no matter which kind of water heater all needs could normally to be worked by mains supply.Therefore, whether civil power stablizes normal power supply, all can affect work and the useful life of water heater to a certain extent.
Civil power or because of various factors impact, make its voltage higher or lower than setting, and too high or too low magnitude of voltage all can damage water heater.
Summary of the invention
For the deficiency that prior art exists, the object of the present invention is to provide a kind of water heater, when line voltage is higher or lower than setting, carry out sound and light alarm, automatically cut off appliances power source simultaneously, protection electrical appliance is not damaged.
For achieving the above object, the invention provides following technical scheme:
The present invention is set to further: a kind of water heater, comprises power line, and described power line is provided with bi-directional off-limit alarm protector, is provided with alarm and protection circuit in described bi-directional off-limit alarm protector, and described alarm and protection circuit comprises
Supply circuit, provides stable direct current 12V voltage;
Input voltage circuit, provides the input signal detecting line voltage change;
Over-voltage detection circuit, couples input voltage circuit, receives and detects input signal, output overvoltage signal;
Undervoltage detection circuit, couples input voltage circuit, receives and detects input signal, exports under-voltage signal;
Optical alarm circuit, comprise the over voltage alarm circuit coupling over-voltage detection circuit and the undervoltage warning circuit coupling undervoltage detection circuit, described over voltage alarm circuit comprises red led, described undervoltage warning circuit comprises green indicating lamp, described over voltage alarm circuit receives overvoltage signal and controls red led work, and described undervoltage warning circuit receives under-voltage signal and produces green indicating lamp work;
Protection act circuit, couples over-voltage detection circuit and undervoltage detection circuit, and reception overvoltage signal and under-voltage signal are with having controlled the shutoff of water heater and having exported fault-signal respectively;
Failure alarm circuit, couples protection act circuit, receives fault-signal and produces corresponding sound failure alarm signal.
The present invention is set to further: input voltage circuit comprises the rectifier diode, dropping resistor, filter capacitor and the slide rheostat that are sequentially connected in series, one end of described rectifier diode couples 220V external power, and the foil gauge of described slide rheostat couples over-voltage detection circuit and undervoltage detection circuit.
The present invention is set to further: protection act circuit comprises and is connected in series triode and relay, and the base stage of triode couples the connected node of over-voltage detection circuit and undervoltage detection circuit, grounded emitter, and collector electrode couples supply circuit.
The present invention is set to further: over-voltage detection circuit and undervoltage detection circuit all adopt hex inverter, and the model of hex inverter is CD74HC04.
The present invention is set to further: failure alarm circuit comprises switching circuit and the tonepulse oscillating circuit of series connection, and one end of described switching circuit couples protection act circuit.
Compared with prior art, there is following advantage in water heater of the present invention:
1, at civil power high pressure or lower than setting time, automatically cut off appliances power source, protection electrical appliance is not damaged simultaneously.
2, sound can be carried out, optical information is reported to the police;
3, can identification warning reason, redness is overvoltage protection, and green is under-voltage protection.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of the alarm and protection circuit of water heater of the present invention.
Embodiment
With reference to Fig. 1, water heater embodiment of the present invention is described further.
As shown in Figure 1; a kind of water heater; comprise power line; power line is provided with bi-directional off-limit alarm protector; be provided with alarm and protection circuit in bi-directional off-limit alarm protector, alarm and protection circuit comprises supply circuit, input voltage circuit, over-voltage detection circuit, undervoltage detection circuit, optical alarm circuit, protection act circuit, failure alarm circuit.
The composition of alarm and protection circuit
Supply circuit, mainly comprises C3, VDW, VD6, VD7, C2, and it couples the line voltage of 220V.Line voltage one route C3 step-down, VDW voltage stabilizing, VD6, VD7, C2 rectifying and wave-filtering exports 12V galvanic current pressure supply circuit.
Input voltage circuit, mainly comprises VD1, R1, C1, RP1, RP2, and it couples the line voltage of 220V.Line voltage one route VD1 rectification, R1 step-down, C1 filtering, RP1, RP2 all produce the input signal of about 10.5V voltage detecting line voltage change.
IC1A, IC1B composition that over-voltage detection circuit is connected in series primarily of two;
Undervoltage detection circuit forms primarily of IC1C.
Optical alarm circuit comprises the over voltage alarm circuit of red led and the undervoltage warning circuit of green indicating lamp, and one end of red led LED1 couples the connected node of IC1A, IC1B, and the other end couples protection act circuit by R2; One end of green indicating lamp LED2 couples the output of IC1C, and the other end is by R3 ground connection.
Protection act circuit, comprises the triode VT and relay J that are connected in series.The base stage of VT couples the connected node of over-voltage detection circuit and undervoltage detection circuit, grounded emitter, and collector electrode couples relay J, and the other end of relay J couples supply circuit.
Failure alarm circuit; the switching circuit be made up of IC1D, VD5 comprising series connection and the tonepulse oscillating circuit be made up of IC1E, IC1F, piezoelectric ceramic piece YD; its input couples protection act circuit, and responding to switch signal is failure alarm signal and control YD sounds.
Integrated chip IC can select CD74HC04 hex inverter, and diode VD1 ~ VD7 selects IN4007, and electric capacity C1 ~ C4 all selects alminium electrolytic condenser, withstand voltage 400V, voltage-stabiliser tube selects 12V voltage stabilizing, and relay J selects general 6V direct current relay, and resistance selects common 1/8 or 1/4W carbon film resistor.
Circuit working principle
When civil power is normal, IC1A exports high level, IC1B, IC1C output low level, LED1, LED2 all end not luminous, VT ends, and J is failure to actuate, water heater normal power supply, now B point is high level, IC1D output low level, VD5 conducting, C point is low level, tonepulse oscillating circuit failure of oscillation, YD is sounding not.When mains supply over-voltage or under-voltage time, IC1B, IC1C wherein have one export high level, make A point become high potential, VT saturation conduction, J is energized adhesive, disconnects appliances power source, now B point becomes electronegative potential, and IC1D exports high level, and VD5 ends, backward resistance is very large, be equivalent to open circuit, the starting of oscillation of tonepulse oscillating circuit, YD sends chimes of doom, (during overvoltage, LED1 glows in corresponding lumination of light emitting diode instruction simultaneously; Time under-voltage, LED2 green light).
This water heater when line voltage is higher or lower than setting, can carry out sound and light alarm, automatically cuts off appliances power source simultaneously, and protection electrical appliance is not damaged, practical.
The above makes the preferred embodiment of the present invention, and under not departing from the prerequisite of the principle of the invention for the person of ordinary skill of the art, can also make some modification and improvement, these also should be considered as protection scope of the present invention.
Claims (5)
1. a water heater, comprises power line, it is characterized in that: described power line is provided with bi-directional off-limit alarm protector, is provided with alarm and protection circuit in described bi-directional off-limit alarm protector, and described alarm and protection circuit comprises
Supply circuit, provides stable direct current 12V voltage;
Input voltage circuit, provides the input signal detecting line voltage change;
Over-voltage detection circuit, couples input voltage circuit, receives and detects input signal, output overvoltage signal;
Undervoltage detection circuit, couples input voltage circuit, receives and detects input signal, exports under-voltage signal;
Optical alarm circuit, comprise the over voltage alarm circuit coupling over-voltage detection circuit and the undervoltage warning circuit coupling undervoltage detection circuit, described over voltage alarm circuit comprises red led, described undervoltage warning circuit comprises green indicating lamp, described over voltage alarm circuit receives overvoltage signal and controls red led work, and described undervoltage warning circuit receives under-voltage signal and produces green indicating lamp work;
Protection act circuit, couples over-voltage detection circuit and undervoltage detection circuit, and reception overvoltage signal and under-voltage signal are with having controlled the shutoff of water heater and having exported fault-signal respectively;
Failure alarm circuit, couples protection act circuit, receives fault-signal and produces corresponding sound failure alarm signal.
2. water heater according to claim 1, it is characterized in that: described input voltage circuit comprises the rectifier diode, dropping resistor, filter capacitor and the slide rheostat that are sequentially connected in series, one end of described rectifier diode couples 220V external power, and the foil gauge of described slide rheostat couples over-voltage detection circuit and undervoltage detection circuit.
3. water heater according to claim 1; it is characterized in that: described protection act circuit comprises and is connected in series triode and relay; the base stage of triode couples the connected node of over-voltage detection circuit and undervoltage detection circuit, grounded emitter, and collector electrode couples supply circuit.
4. water heater according to claim 1, is characterized in that: described over-voltage detection circuit and undervoltage detection circuit all adopt hex inverter, and the model of hex inverter is CD74HC04.
5. water heater according to claim 1, is characterized in that: described failure alarm circuit comprises switching circuit and the tonepulse oscillating circuit of series connection, and one end of described switching circuit couples protection act circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510680092.7A CN105186441A (en) | 2015-10-19 | 2015-10-19 | Water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510680092.7A CN105186441A (en) | 2015-10-19 | 2015-10-19 | Water heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105186441A true CN105186441A (en) | 2015-12-23 |
Family
ID=54908363
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510680092.7A Pending CN105186441A (en) | 2015-10-19 | 2015-10-19 | Water heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105186441A (en) |
-
2015
- 2015-10-19 CN CN201510680092.7A patent/CN105186441A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102841321A (en) | Alarm control circuit and alarm tool for lamp aging test | |
| CN103812233B (en) | Micro-electric current inductive power supply type temperature measurement and alarm device and thermometric alarm method | |
| CN205793538U (en) | A kind of LEDbulb lamp circuit of Linear temperature control protection | |
| CN202906436U (en) | Overvoltage automatic power off protector | |
| CN205174844U (en) | Water heater | |
| CN102610969A (en) | Low-power-consumption intelligent control electricity-saving socket for air conditioner | |
| CN201749373U (en) | Water level controller without ionizing electrolysis water | |
| CN105186441A (en) | Water heater | |
| CN205174843U (en) | Water heater | |
| CN205174842U (en) | Water heater | |
| CN205162818U (en) | Solar water dispenser | |
| CN205174841U (en) | Water heater | |
| CN105140879A (en) | Solar energy drinking machine | |
| CN205174840U (en) | Water heater | |
| CN204089163U (en) | A kind of electric hot water bottle control circuit | |
| CN105352191A (en) | Water heater | |
| CN205181112U (en) | Solar water dispenser | |
| CN105299909A (en) | Water heater | |
| CN205178475U (en) | Solar water dispenser | |
| CN202997524U (en) | Intelligent universal type three phase protector | |
| CN105135701A (en) | Water heater | |
| CN102613889A (en) | Automatic power-off device for electric kettle | |
| CN205178474U (en) | Solar water dispenser | |
| CN105299908A (en) | Water heater | |
| CN105212752A (en) | A kind of solar drinking-water machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20151223 |
|
| WD01 | Invention patent application deemed withdrawn after publication |