CN204853922U - Electric water heater - Google Patents
Electric water heater Download PDFInfo
- Publication number
- CN204853922U CN204853922U CN201520412666.8U CN201520412666U CN204853922U CN 204853922 U CN204853922 U CN 204853922U CN 201520412666 U CN201520412666 U CN 201520412666U CN 204853922 U CN204853922 U CN 204853922U
- Authority
- CN
- China
- Prior art keywords
- circuit
- relay
- output
- transforming circuit
- energy
- 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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Abstract
The utility model provides an electric water heater, which comprises an outer shell, the heating inner bag, energy -conserving circuit and power cord, heating inner bag and energy -conserving circuit arrangement are in the shell, heating inner bag and energy -conserving circuit connection, the power cord passes shell and energy -conserving circuit connection, energy -conserving circuit includes the relay, first vary voltage circuit, second vary voltage circuit and thermistor, the output common port and the one end of commercial power of relay are connected, the normal close output of relay is connected with an input of first vary voltage circuit and the one end of heating inner bag, the output of normally opening of relay is connected with an input of second vary voltage circuit. The utility model discloses can be when thermistor detect high temperature, the circuit of inner bag is heated in the disconnection to keep the state of outage, up to the disconnection of circuit and commercial power and is connected once more and just can continues to switch on, avoid the energy dissipation that heating continuously caused.
Description
Technical field
The utility model relates to field of water heaters, particularly relates to a kind of electric heater.
Background technology
Existing water heater, after reaching design temperature, can stop heating, after temperature reduces, starts again heating, so wastes electricity very much.Some user after water temperature reaches uniform temperature, can close water heater, pretty troublesome so again, and is easy to forget, causes the waste of electricity.
Summary of the invention
The technical problems to be solved in the utility model, is to provide a kind of electric heater, solves the problem of water heater waste electricity.
The utility model is achieved in that a kind of electric heater, comprise shell, heating inner liner, energy-saving circuit and power line, heating inner liner and energy-saving circuit are arranged in the enclosure, heating inner liner is connected with energy-saving circuit, power line is connected with energy-saving circuit through shell, energy-saving circuit comprises relay, first transforming circuit, second transforming circuit and thermistor, the output common port of relay is connected with one end of civil power, the normally closed output of relay is connected with one end of an input of the first transforming circuit and heating inner liner, the output of often opening of relay is connected with an input of the second transforming circuit, another input of first transforming circuit is connected with another input of the second transforming circuit, the other end of heating inner liner is connected with the other end of civil power, the output cathode of the first transforming circuit and the power positive end of comparable chip, one end of first resistance is connected with one end of the second resistance, the output cathode of the second transforming circuit is connected with an input of the negative pole of diode and relay, the positive pole of diode is connected with the output of comparable chip, the other end of the first resistance is connected with the in-phase input end of one end of thermistor and comparable chip, the other end of the second resistance is connected with one end of the inverting input of comparable chip and the 3rd resistance, the output negative pole of the first transforming circuit, the output negative pole of the second transforming circuit, the power supply negative terminal of comparable chip, the other end of thermistor, the other end of the 3rd resistance and another input end grounding of relay, the resistance of thermistor rises with temperature and raises, first transforming circuit is identical with the output voltage of the second transforming circuit, thermistor is arranged on heating inner liner inwall.
The utility model tool has the following advantages: can when thermistor detects high temperature, disconnect the circuit of heating inner liner, and keep the state of power-off, just can continue to be energized until circuit and civil power disconnect and be again connected, avoid the energy dissipation that the heating continued causes.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is circuit diagram of the present utility model.
Detailed description of the invention
By describing technology contents of the present utility model, structural feature in detail, realized object and effect, accompanying drawing is coordinated to be explained in detail below in conjunction with embodiment.
Refer to Fig. 1 and Fig. 2, the utility model provides a kind of electric heater, comprise shell 1, heating inner liner 2, energy-saving circuit 3 and power line 4, heating inner liner and energy-saving circuit are arranged in the enclosure, heating inner liner is connected with energy-saving circuit, power line is connected with energy-saving circuit through shell, energy-saving circuit comprises relay LS1, first transforming circuit (transforming circuit 1 in Fig. 2), second transforming circuit (transforming circuit 2 in Fig. 2) and thermistor RD1, the output common port of relay is connected with one end of civil power, the normally closed output of relay is connected with one end of an input of the first transforming circuit and heating inner liner, the output of often opening of relay is connected with an input of the second transforming circuit, another input of first transforming circuit is connected with another input of the second transforming circuit, the other end of heating inner liner L1 is connected with the other end of civil power, the output cathode of the first transforming circuit and the power positive end of comparable chip U1, one end of first resistance R1 is connected with one end of the second resistance R2, the output cathode of the second transforming circuit is connected with an input of the negative pole of diode D1 and relay, the positive pole of diode is connected with the output of comparable chip, the other end of the first resistance is connected with the in-phase input end of one end of thermistor and comparable chip, the other end of the second resistance is connected with one end of the inverting input of comparable chip and the 3rd resistance R3, the output negative pole of the first transforming circuit, the output negative pole of the second transforming circuit, the power supply negative terminal of comparable chip, the other end of thermistor, the other end of the 3rd resistance and another input end grounding of relay, the resistance of thermistor rises with temperature and raises, first transforming circuit is identical with the output voltage of the second transforming circuit, thermistor is arranged on heating inner liner inwall.
Wherein, relay is five pin relays, and under input no power state, the output common port of relay is connected with output normal-closed end, and under the state of input energising, the output common port of relay can be connected with output Chang Kaiduan.According to the voltage of different input, common model has varied, as the JQC-3F etc. of the SRD-12VDC-SL-C of 12V, 5V.Transforming circuit for realizing the transformation of voltage, thus produces DC voltage.If namely common charger for mobile phone is the AC-DC transforming circuit that 5V exports.Heating inner liner realizes the heating to object.
In use, civil power exports above 220V alternating current to circuit the utility model.Now the output common port of relay is interconnected with output Chang Kaiduan, and transforming circuit 1 is electrically connected with city, and transforming circuit exports DC voltage after connecting civil power.Heating inner liner is electrically connected with city, and namely heating inner liner normally works.If the temperature that thermistor detects is lower, then the resistance of thermistor is lower, and the voltage on thermistor is lower, and lower than the voltage above the 3rd resistance, comparable chip does not export, and relay keeps this state, the state of heating inner liner maintenance work.When thermistor detects high temperature, the resistance of thermistor is excessive, makes the voltage on thermistor be greater than the voltage of the 3rd resistance, comparable chip output output voltage, voltage leads to the input of relay through diode, makes relay input obtain electric and start adhesive.After adhesive, the output common port of relay with often open output and be connected, make transforming circuit 1 disconnect the connection with civil power, and transforming circuit 2 connects upper civil power, now the output voltage of transforming circuit is directly connected to the input of relay.The energising of guard relay, makes relay to remain on always and exports the state that is connected with Chang Kai output of common port, thus be disconnected the connection of civil power and heating inner liner, heating inner liner is no longer heated.Transforming circuit 1 loses voltage simultaneously, and temperature detection below lost efficacy, even if temperature declines, also can not affect the work of relay, namely relay still can keep the state that civil power and heating inner liner disconnect.And when needs heat again, only need the 220V power supply disconnecting civil power, then once heat on the power supply connecting civil power can carry out.Reach once temperature is too high will the effect of Self-disconnecting, avoid the energy dissipation that the heating continued causes.This Self-disconnecting can recover by reconnecting upper mains supply again, easy to use.
It should be noted that, the output of transforming circuit has electric capacity to carry out filtering substantially, and the electric capacity of transforming circuit 1 can maintain the off-state of relay when relay disconnects, until the circuit of transforming circuit 2 obtains electric and exports.
The foregoing is only embodiment of the present utility model; not thereby scope of patent protection of the present utility model is limited; every utilize the utility model description and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present utility model.
Claims (1)
1. an electric heater, it is characterized in that: comprise shell, heating inner liner, energy-saving circuit and power line, heating inner liner and energy-saving circuit are arranged in the enclosure, heating inner liner is connected with energy-saving circuit, power line is connected with energy-saving circuit through shell, energy-saving circuit comprises relay, first transforming circuit, second transforming circuit and thermistor, the output common port of relay is connected with one end of civil power, the normally closed output of relay is connected with one end of an input of the first transforming circuit and heating inner liner, the output of often opening of relay is connected with an input of the second transforming circuit, another input of first transforming circuit is connected with another input of the second transforming circuit, the other end of heating inner liner is connected with the other end of civil power, the output cathode of the first transforming circuit and the power positive end of comparable chip, one end of first resistance is connected with one end of the second resistance, the output cathode of the second transforming circuit is connected with an input of the negative pole of diode and relay, the positive pole of diode is connected with the output of comparable chip, the other end of the first resistance is connected with the in-phase input end of one end of thermistor and comparable chip, the other end of the second resistance is connected with one end of the inverting input of comparable chip and the 3rd resistance, the output negative pole of the first transforming circuit, the output negative pole of the second transforming circuit, the power supply negative terminal of comparable chip, the other end of thermistor, the other end of the 3rd resistance and another input end grounding of relay, the resistance of thermistor rises with temperature and raises, first transforming circuit is identical with the output voltage of the second transforming circuit, thermistor is arranged on heating inner liner inwall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520412666.8U CN204853922U (en) | 2015-06-15 | 2015-06-15 | Electric water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520412666.8U CN204853922U (en) | 2015-06-15 | 2015-06-15 | Electric water heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204853922U true CN204853922U (en) | 2015-12-09 |
Family
ID=54744463
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520412666.8U Expired - Fee Related CN204853922U (en) | 2015-06-15 | 2015-06-15 | Electric water heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204853922U (en) |
-
2015
- 2015-06-15 CN CN201520412666.8U patent/CN204853922U/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: 20151209 Termination date: 20160615 |