CN205174842U - Water heater - Google Patents
Water heater Download PDFInfo
- Publication number
- CN205174842U CN205174842U CN201520812709.1U CN201520812709U CN205174842U CN 205174842 U CN205174842 U CN 205174842U CN 201520812709 U CN201520812709 U CN 201520812709U CN 205174842 U CN205174842 U CN 205174842U
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- CN
- China
- Prior art keywords
- circuit
- voltage
- couples
- water heater
- detection circuit
- 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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Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
Landscapes
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
The utility model discloses a water heater is provided with two -way off -limit alarm protector on this water heater's the power cord, be equipped with the alarming protection circuit who has the two -way off -limit alarm of line voltage in it. Alarming protection circuit is including supplying with circuit, input voltage circuit, over - voltage detection circuit, undervoltage detection circuit, protection actuating circuit and failure alarm circuit. The utility model discloses water heater carries out audible alarm when the line voltage is higher than or be less than the setting, automatic cutout electric appliance power source protects and is not damaged with electrical apparatus simultaneously.
Description
Technical field
The utility model relates to a kind of technical field of water heaters, and 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 service 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.
Utility model content
For the deficiency that prior art exists, the purpose of this utility model is to provide a kind of water heater, when line voltage is higher or lower than setting, carries out audible alarm, automatically cuts off appliances power source simultaneously, and protection electrical appliance is not damaged.
For achieving the above object, the utility model provides following technical scheme:
The utility model 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;
Protection act circuit, couples over-voltage detection circuit and undervoltage detection circuit, receives overvoltage signal and under-voltage signal respectively and controls conducting or the shutoff of water heater, output switching signal simultaneously;
Failure alarm circuit, couples protection act circuit, receiving key signal, exports audible ringing signal.
The utility model is set to further: input voltage circuit comprises the commutation diode, dropping resistor, filter capacitor and the slide rheostat that couple successively, one end of described commutation diode couples 220V external power, and described slide rheostat foil gauge couples over-voltage detection circuit and undervoltage detection circuit.
The utility model 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 colelctor electrode couples supply circuit.
The utility model 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 utility model is set to further: failure alarm circuit comprises on-off circuit and tonepulse oscillating circuit; one end of described on-off circuit couples protection act circuit; the other end couples tonepulse oscillating circuit, so the other end ground connection of tonepulse oscillating circuit corresponding switch circuit.
Compared with prior art, there is following advantage in the utility model water heater:
1, at civil power high pressure or lower than setting time, automatically cut off appliances power source, protection electrical appliance is not damaged.
2, audible alarm can be carried out.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of the alarm and protection circuit of the utility model water heater.
Detailed description of the invention
Be described further referring to figs. 1 through to the utility model water heater embodiment.
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, 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 hex inverter IC1C.
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 colelctor electrode couples relay J, and the other end of relay J couples supply circuit.
Failure alarm circuit mainly comprises on-off circuit and tonepulse oscillating circuit.On-off circuit is primarily of IC1D and VD5 composition, and it couples protection act circuit and exports, and receives the switching signal that protection act circuit exports.Tonepulse oscillating circuit comprises IC1E, IC1F and piezoelectric ceramic piece YD forms, and the switching signal of its receiving key circuit is so that control YD sends fault alarm sound.
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 DC 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, and VT ends, and J is failure to actuate, water heater normal power supply, and now B point is high level, IC1D output low level, VD5 conducting, and C point is low level, and 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, and disconnect appliances power source, now B point becomes electronegative potential, IC1D exports high level, VD5 ends, and backward resistance is very large, is equivalent to open circuit, the starting of oscillation of tonepulse oscillating circuit, YD sends chimes of doom.
This water heater when line voltage is higher or lower than setting, can carry out audible alarm, automatically cuts off appliances power source simultaneously, and protection electrical appliance is not damaged, practical.
The above makes preferred embodiment of the present utility model, and under not departing from the prerequisite of the utility model principle for the person of ordinary skill of the art, can also make some modification and improvement, these also should be considered as protection domain of the present utility model.
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;
Protection act circuit, couples over-voltage detection circuit and undervoltage detection circuit, receives overvoltage signal and under-voltage signal respectively and controls conducting or the shutoff of water heater, output switching signal simultaneously;
Failure alarm circuit, couples protection act circuit, receiving key signal, exports audible ringing signal.
2. water heater according to claim 1, it is characterized in that: described input voltage circuit comprises the commutation diode, dropping resistor, filter capacitor and the slide rheostat that couple successively, one end of described commutation diode couples 220V external power, and described slide rheostat foil gauge 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 colelctor 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; it is characterized in that: described failure alarm circuit comprises on-off circuit and tonepulse oscillating circuit; one end of described on-off circuit couples protection act circuit; the other end couples tonepulse oscillating circuit, so the other end ground connection of tonepulse oscillating circuit corresponding switch circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520812709.1U CN205174842U (en) | 2015-10-19 | 2015-10-19 | Water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520812709.1U CN205174842U (en) | 2015-10-19 | 2015-10-19 | Water heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205174842U true CN205174842U (en) | 2016-04-20 |
Family
ID=55738829
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520812709.1U Expired - Fee Related CN205174842U (en) | 2015-10-19 | 2015-10-19 | Water heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205174842U (en) |
-
2015
- 2015-10-19 CN CN201520812709.1U patent/CN205174842U/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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160420 Termination date: 20161019 |