CN103075810B - Power control device and water heater - Google Patents
Power control device and water heater Download PDFInfo
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- CN103075810B CN103075810B CN201310019861.XA CN201310019861A CN103075810B CN 103075810 B CN103075810 B CN 103075810B CN 201310019861 A CN201310019861 A CN 201310019861A CN 103075810 B CN103075810 B CN 103075810B
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Abstract
The invention discloses a power control device and a water heater; the power control device comprises a utility power input end, a controller and a switching circuit, wherein the utility power input end is connected with the input end of a power circuit through the switching circuit; the switching circuit is connected with the power circuit to work after being pushed by the pressure of water flow; the output end of the power circuit is connected with the power supply end of the controller, and is connected with the switching circuit; the output end of the switching circuit is connected with the input end of the controller; the output end of the controller is connected with the control end of the switching circuit, and is connected with a working load through an output driving circuit; and the controller controls the work of the working load according to the state of a switching signal which is output by the switching circuit, and controls whether the power circuit continues to work or not. According to the power control device and the water heater, the power circuit does not work when the water heater is in a standby state, so that no electricity is consumed when the water heater is in the standby state. The power control device also has the advantages of simple and reasonable circuit structure, easiness in realization, safety and reliability, and is applicable to water heaters of a plurality of types.
Description
Technical field
The present invention relates to technical field of water heaters, particularly relate to a kind of power control and water heater.
Background technology
Usual various electric equipment products have certain power consumption in the standby state, along with various countries save energy and reduce the cost require further raising, the stand-by power consumption of often kind of household appliances all must lower than some performance numbers.Gas heater is generally C electric appliances, and the power consumed under its holding state is according to the rules less than 0.5W.
In prior art, under the condition of water flowing, energising, ventilation, the pressure of water flow of water heater promotes current microswitch and closes, and switching signal passes to controller, and controller opens motor exhaust is vented, pulse igniter starts electric discharge simultaneously, combustion gas Controlling solenoid valve is opened, and combustible gas stream enters firing chamber, and combustible gas stream is lighted after running into the electric spark of pulse igniter release, start heat cycles water tank, hot water flows out very soon after cold water is discharged; When closing current, the distress resolves of current, current microswitch disconnects, and controller cuts out the operating loads such as combustion gas Controlling solenoid valve, pulse igniter and motor exhaust, and water heater enters holding state.Under normal circumstances, unless disconnected the input power switch of water heater after using water heater, otherwise just have certain power consumption, instant heating hydrophone also consumes electric energy in the standby state always, this wastes electric energy to a certain extent, also increases financial burden to user.
Summary of the invention
Fundamental purpose of the present invention proposes a kind of power control and water heater, and being intended to realize water heater does not have power consumption in the standby state.
In order to achieve the above object, the present invention proposes a kind of power control, and this power control is connected with power circuit, and is connected with operating load by output driving circuit, comprises mains electricity input end and controller, also comprises on-off circuit; Wherein:
Described mains electricity input end is connected with the input end of described power circuit by described on-off circuit, described on-off circuit connects described power circuit after promoting by water flow pressure, make described power circuit work, the output terminal of described power circuit is connected with the feeder ear of described controller, and be connected with described on-off circuit, the output terminal of described on-off circuit is connected with the input end of described controller, the output terminal of described controller is connected with the control end of described on-off circuit, and be connected with described operating load by described output driving circuit, the state of the switching signal that described controller exports according to described on-off circuit, control described operating load whether to work, and control described power circuit and whether work on.
Preferably, the input end of described controller comprises multiple input pin, and the detection input pin of wherein said controller is connected with the output terminal of described on-off circuit; The output terminal of described controller comprises multiple output pin, and the control output pin of wherein said controller is connected with the control end of described on-off circuit; The feeder ear of described controller comprises power pins and grounding pin, and described power pins is connected with the first voltage output end of described power circuit, the equal ground connection of earth terminal of described grounding pin and described power circuit.
Preferably, described on-off circuit comprises current microswitch, relay, driver and testing circuit; Wherein:
One end of described current microswitch is connected with described mains electricity input end, and is connected with the input end of described testing circuit, and the other end of described current microswitch is connected with described power circuit, and is connected with described testing circuit through the switch of described relay; The control output pin of described controller is connected through described driver one end with the coil of described relay, and the other end of the coil of described relay is connected to the second voltage output end of described power circuit; The output terminal of described testing circuit, as the output terminal of described on-off circuit, is connected with the detection input pin of described controller.
Preferably, described on-off circuit also comprises pull-up resistor, and one end of described pull-up resistor is connected to the first voltage output end of described power circuit, and the other end is connected to the output terminal of described testing circuit.
Preferably, described testing circuit comprises voltage regulation unit, current-limiting resistance and photo-coupler; Wherein:
One end of described voltage regulation unit is as the input end of described testing circuit, be connected with one end of described current microswitch, and be connected through the negative electrode of described current-limiting resistance with described photo-coupler, the other end of described voltage regulation unit is connected with the anode of described photo-coupler, and is connected with the other end of described current microswitch through the switch of described relay; The collector of described photo-coupler, as the output terminal of described testing circuit, is connected with the detection input pin of described controller, and is connected with the first voltage output end of described power circuit through described pull-up resistor, the grounded emitter of described photo-coupler.
Preferably, described voltage regulation unit comprises diode group and first diode in parallel with described diode group, and described diode group comprises at least two series connection and the identical diode of conducting direction, and described first diode is contrary with the conducting direction of described diode group.
Preferably, described diode group comprises the second diode and the 3rd diode, described second diode and the 3rd Diode series, the series arm of described second diode and the 3rd diode and described first diodes in parallel; The negative electrode of described second diode is connected with one end of described current microswitch, the anode of described 3rd diode is connected with the other end of described current microswitch through the switch of described relay, the anode of described first diode is connected through the negative electrode of described current-limiting resistance with described photo-coupler, and the negative electrode of described first diode is connected with the anode of described photo-coupler.
Preferably, described on-off circuit comprises current microswitch, relay and driver, and described current microswitch comprises first via switch and the second way switch; Wherein:
Described power circuit is connected with described mains electricity input end through described first via switch, and one end of described second way switch is connected with the detection input pin of described controller, the other end ground connection of described second way switch; The control output pin of described controller is connected through described driver one end with the coil of described relay, the other end of the coil of described relay is connected to the second voltage output end of described power circuit, the switch of described relay and described first via switch in parallel.
Preferably, described on-off circuit also comprises pull-up resistor, and one end of described pull-up resistor is connected to the first voltage output end of described power circuit, and the other end is connected to the second way switch of described current microswitch
The present invention also proposes a kind of water heater, and this water heater comprises power control, and this power control is connected with power circuit, and is connected with operating load by output driving circuit, comprises mains electricity input end and controller, also comprises on-off circuit; Wherein:
Described mains electricity input end is connected with the input end of described power circuit by described on-off circuit, described on-off circuit connects described power circuit after promoting by water flow pressure, make described power circuit work, the output terminal of described power circuit is connected with the feeder ear of described controller, and be connected with described on-off circuit, the output terminal of described on-off circuit is connected with the input end of described controller, the output terminal of described controller is connected with the control end of described on-off circuit, and be connected with described operating load by described output driving circuit, the state of the switching signal that described controller exports according to described on-off circuit, control described operating load whether to work, and control described power circuit and whether work on.
The power control that the present invention proposes, when there being current to inject, control power circuit work by on-off circuit, on-off circuit, to controller output switching signal, normally works to control operating load; When not having current to inject, controller detects that the state of switching signal closes operating load after changing, and roof-cut resistence circuit, with circuit of cutting off the electricity supply, make water heater in the standby state power circuit do not work, realizing water heater does not have power consumption in the standby state.Meanwhile, the present invention also has circuit structure advantages of simple, is easy to realize, and safe and reliable advantage, is applicable to polytype water heater.
Accompanying drawing explanation
Fig. 1 is the theory diagram of power control preferred embodiment of the present invention;
Fig. 2 is the electrical block diagram of power control one embodiment of the present invention;
Fig. 3 is the electrical block diagram of another embodiment of power control of the present invention.
The realization of the object of the invention, functional characteristics and advantage will in conjunction with the embodiments, are described further with reference to accompanying drawing.
Embodiment
Technical scheme of the present invention is further illustrated below in conjunction with Figure of description and specific embodiment.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
The present invention proposes a kind of power control.
With reference to the theory diagram that Fig. 1, Fig. 1 are power control 10 of the present invention preferred embodiment.
In the embodiment of the present invention, power control 10 is connected with power circuit 20, and is connected with operating load 40 by output driving circuit 30, and power control 10 comprises mains electricity input end 11, controller 12 and on-off circuit 13.
Wherein, mains electricity input end 11 is connected with the input end of power circuit 20 by on-off circuit 13, on-off circuit 13 is by the circuit 20 that switches on power after water flow pressure promotion, power circuit 20 is worked, the output terminal of power circuit 20 is connected with the feeder ear of controller 12, and be connected with on-off circuit 13, the output terminal of on-off circuit 13 is connected with the input end of controller 12, the output terminal of controller 12 is connected with the control end of on-off circuit 13, and be connected with operating load 40 by output driving circuit 30, the state of the switching signal that controller 12 exports according to on-off circuit 13, control operating load 40 whether to work, and whether control power circuit 20 works on.
Relative to prior art, the power control that the embodiment of the present invention proposes, when there being current to inject, controlling power circuit 20 work by on-off circuit 13, on-off circuit 13, to controller 12 output switching signal, normally works to control operating load 40; When not having current to inject, controller 12 detects that the state of switching signal closes operating load 40 after changing, and roof-cut resistence circuit 13, with circuit 20 of cutting off the electricity supply, make water heater in the standby state power circuit 20 do not work, realizing water heater does not have power consumption in the standby state.
Composition graphs 1 and Fig. 2, wherein Fig. 2 is the electrical block diagram of power control 10 1 embodiment of the present invention.
In the present embodiment, controller 12 is an integrated chip, and the input end of controller 12 comprises multiple input pin, and the detection input pin IN of its middle controller 12 is connected with the output terminal of on-off circuit 13; The output terminal of controller 12 comprises multiple output pin, and the control output pin OUT of its middle controller 12 is connected with the control end of on-off circuit 13; The feeder ear of controller 12 comprises power pins VDD and grounding pin GND, power pins VDD is connected with the first voltage output end VCC1 of power circuit 20, the equal ground connection of earth terminal of grounding pin GND and power circuit 20, for controller 12 provides operating voltage after power circuit 20 connection.Operating load 40 is connected with the output pin of controller 12 in the present embodiment, according to the quantity of the operating load 40 of required control, suitably can increase and decrease the number of pins of integrated chip, namely can need to select the controller 12 with suitable number of pins according to design.
In the present embodiment, on-off circuit 13 comprises current microswitch S1, relay R Y1, driver U1 and testing circuit 130.
Wherein, one end of current microswitch S1 is connected with mains electricity input end 11, and one end of current microswitch S1 is connected with the input end of testing circuit 130, the other end of current microswitch S1 is connected with power circuit 20, and the other end of current microswitch S1 is connected with testing circuit 130 through the switch of relay R Y1; One end of the coil of relay R Y1 is connected with the control output pin OUT of controller 12, and the other end of the coil of relay R Y1 is connected to the second voltage output end VCC2 of power circuit 20; The output terminal of testing circuit 130, as the output terminal of on-off circuit 13, is connected with the detection input pin IN of controller 12.
Particularly, on-off circuit 13 also comprises pull-up resistor R1, and one end of pull-up resistor R1 is connected to the first voltage output end VCC1 of power circuit 20, and the pull-up resistor R1 other end is connected to the output terminal of testing circuit 130.In the present embodiment, pull-up resistor R1 is external external devices, for when testing circuit 130 no-output, the voltage that the first voltage output end VCC1 output of testing circuit 130 being pulled upward to power circuit 20 exports, makes controller 12 high level be detected by pull-up resistor R1.In addition, it should be noted that, if controller 12 is built-in with pull-up resistor R1, then do not need external pull-up resistor R1 herein.
Further, testing circuit 130 comprises voltage regulation unit 131, current-limiting resistance R2 and photo-coupler U2; Wherein:
One end of voltage regulation unit 131 is as the input end of testing circuit 130, be connected with one end of current microswitch S1, and one end of voltage regulation unit 131 is connected with the negative electrode of photo-coupler U2 through current-limiting resistance R2, the other end of voltage regulation unit 131 is connected with the anode of photo-coupler U2, and the other end of voltage regulation unit 131 is connected with the other end of current microswitch S1 through the switch of relay R Y1; The collector of photo-coupler U2 is as the output terminal of testing circuit 130, be connected with the detection input pin IN of controller 12, and the collector of photo-coupler U2 is connected with the first voltage output end VCC1 of power circuit 20 through pull-up resistor R1, the grounded emitter of photo-coupler U2.
In the present embodiment, current-limiting resistance R2 is connected between one end of voltage regulation unit 131 and the negative electrode of photo-coupler U2, the voltage at voltage regulation unit 131 two ends is made to be added in the anode of luminotron in photo-coupler U2, prevent when electric current is excessive, in current direction photo-coupler U2 luminotron negative electrode and burn out photo-coupler U2.When pull-up resistor R1 is used for the power valve cut-off in photo-coupler U2, the output of photo-coupler U2 is pulled upward to the voltage that power circuit 20 first voltage output end VCC1 exports, by the output clamper of photo-coupler U2 at high level, make photo-coupler U2 export the switching signal of high level to controller 12, controller 12 detects high level.
Particularly, voltage regulation unit 131 comprises diode group 1310 and the first diode D1 in parallel with diode group 1310, diode group 1310 comprises at least two series connection and the identical diode of conducting direction, and the first diode D1 is contrary with the conducting direction of diode group 1310.
Particularly, diode group 1310 comprises the second diode D2 and the 3rd diode D3, and the second diode D2 and the 3rd diode D3 connects, and the series arm of the second diode D2 and the 3rd diode D3 is in parallel with the first diode D1; The negative electrode of the second diode D2 is connected with one end of current microswitch S1, the anode of the 3rd diode D3 is connected with the other end of current microswitch S1 through the switch of relay R Y1, the anode of the first diode D1 is connected with the negative electrode of photo-coupler U2 through current-limiting resistance R2, and the negative electrode of the first diode D1 is connected with the anode of photo-coupler U2.
In the present embodiment, diode group 1310 can be at least two series connection and the identical diode of conducting direction, the present embodiment preferably diode group 1310 comprises the second diode D2 and the 3rd diode D3 two diodes, and the voltage of the series arm two ends generation of the second diode D2 and the 3rd diode D3 is for driving the luminotron conducting in photo-coupler U2.First diode D1, second diode D2 and the 3rd diode D3 forms series-parallel circuit, rectification is carried out to the civil power of input, namely the civil power inputted from mains electricity input end 11 is alternating current, at the positive half period of alternating current, first diode D1 conducting, first diode D1 carries out rectification to alternating current, and produce burning voltage at the two ends of the first diode D1, at the negative half-cycle of alternating current, second diode D2 and the equal conducting of the 3rd diode D3, second diode D2 and the 3rd diode D3 carries out rectification to alternating current, and produce burning voltage at the two ends of the second diode D2 and the 3rd diode D3 series arm, the voltage produced at the two ends of the second diode D2 and the 3rd diode D3 series arm reaches the conduction voltage drop of luminotron in photo-coupler U2, make luminotron conducting in photo-coupler U2.The voltage produced due to the two ends of the second diode D2 and the 3rd diode D3 series arm just makes the conducting of the luminotron in photo-coupler U2, and therefore only at the negative half-cycle of alternating current, photo-coupler U2 just works, the switching signal of output low level; And at the negative half-cycle of alternating current, photo-coupler U2 does not work, owing to there being the effect of pull-up resistor R1, by photo-coupler U2 clamper at high level, the switching signal that controller 12 is detected is the pulse of low and high level alternately change.
What deserves to be explained is, voltage regulation unit 131 in the present embodiment is not limited to said structure, according to design needs, the stabilivolt that the voltage regulation unit 131 in the present embodiment can also select the connection in series-parallel loop formed with above-mentioned diode group 1310 and the first diode D1 to have equivalent function replaces; The anode of this stabilivolt is connected with one end of current microswitch S1, and be connected with the negative electrode of photo-coupler U2 through current-limiting resistance R2, the negative electrode of stabilivolt is connected with the anode of photo-coupler U2, and is connected with the other end of current microswitch S1 through the switch of relay R Y1.
In the present embodiment, the principle of work of the circuit structure of the power control 10 shown in Fig. 2 specifically describes as follows:
When opening outlet valve, when having current to inject, current microswitch S1 is closed under the pressure effect of current, power circuit 20 is connected, power circuit 20 is to controller 12 output voltage, for controller 12 provides operating voltage, controller 12 electric after enter duty, pilot relay RY1 adhesive, the testing circuit 130 of the first diode D1, the second diode D2 and the 3rd diode D3, current-limiting resistance R2 and photo-coupler U2 composition forms loop with relay R Y1, and the loop formed is in parallel with current microswitch S1.Because current microswitch S1 is in closure state, the civil power inputted from mains electricity input end 11 preferentially to switch on power circuit 20 through current microswitch S1, and the first diode D1, the voltage at the series-parallel circuit two ends that the second diode D2 and the 3rd diode D3 forms is zero, namely the luminotron not conducting in photo-coupler U2, thus photo-coupler U2 internal tube does not have electric current to flow through, because photo-coupler U2 to receive the first voltage output end VCC1 of power circuit 20 through pull-up resistor R1, therefore the voltage that the first voltage output end VCC1 that the output of photo-coupler U2 is pulled upward to power circuit 20 by pull-up resistor R1 exports, by the output clamper of photo-coupler U2 at high level, photo-coupler U2 is made to export the detection input pin IN of switching signal to controller 12 of high level, controller 12 detects that the state of the switching signal detecting input pin IN is high level, these interval scale current are normal, controller 12 drives operating load 40 to connect by output driving circuit 30, control operating load 40 to work, operating load 40 comprises gas electromagnetic valve, motor exhaust and pulse igniter even load, namely motor exhaust connected by controller 12, pulse igniter and gas electromagnetic valve, water heater is made to enter normal operating conditions.
When closedown outlet valve, when not having current to inject, the distress resolves of current, current microswitch S1 is in off-state, now the first diode D1, the series-parallel circuit that second diode D2 and the 3rd diode D3 form and relay R Y1 and power circuit 20 form loop, first diode D1, the voltage driven photo-coupler U2 at the series-parallel circuit two ends that the second diode D2 and the 3rd diode D3 forms works, photo-coupler U2 exports the detection input pin IN of switching signal to controller 12 that low and high level replaces change, represent that now current are closed, when controller 12 detects that the state of the switching signal detecting input pin IN is the pulse of low and high level alternately change, cut off the duty of output driving circuit 40, namely gas electromagnetic valve is closed, motor exhaust is closed again after waiting for a period of time, last closed relay RY1, thus circuit 20 of cutting off the electricity supply, water heater enters the holding state not having power consumption, reach the object that water heater does not have power consumption in the standby state, realize zero stand-by power consumption of water heater.
Composition graphs 1 and Fig. 3, wherein Fig. 3 is the electrical block diagram of another embodiment of power control 10 of the present invention.
In the present embodiment, controller 12 is an integrated chip, and the input end of controller 12 comprises multiple input pin, and the detection input pin IN of its middle controller 12 is connected with the output terminal of on-off circuit 13; The output terminal of controller 12 comprises multiple output pin, and the control output pin OUT of its middle controller 12 is connected with the control end of on-off circuit 13; The feeder ear of controller 12 comprises power pins VDD and grounding pin GND, power pins VDD is connected with the first voltage output end VCC1 of power circuit 20, the equal ground connection of earth terminal of grounding pin GND and power circuit 20, for controller 12 provides operating voltage after power circuit 20 connection.Operating load 40 is connected with the output pin of controller 12 in the present embodiment, according to the quantity of the operating load 40 of required control, suitably can increase and decrease the number of pins of integrated chip
In the present embodiment, on-off circuit 13 comprises current microswitch S1, relay R Y1 and driver U1, and current microswitch S1 comprises first via K switch 1 and the second way switch K2.
Wherein, power circuit 20 is connected with mains electricity input end 11 through first via K switch 1, and one end of the second way switch K2 is connected with the detection input pin IN of controller 12, the other end ground connection of the second way switch K2; The control output pin of controller 12 is connected with one end of the coil of relay R Y1 through driver U1, the other end of the coil of relay R Y1 is connected to the second voltage output end VCC2 of power circuit 20, controller 12 obtains electric rear pilot relay RY1 adhesive, and the switch of relay R Y1 is in parallel with first via K switch 1.
Particularly, on-off circuit 13 also comprises pull-up resistor R1, and one end of pull-up resistor 13 is connected to the first voltage output end VCC1 of power circuit 20, and the other end of pull-up resistor 13 is connected to the second way switch K2 of current microswitch S1.
In the present embodiment, pull-up resistor R1 is used for when the second way switch K2 is in off-state, the voltage that the first voltage output end VCC1 output of the second way switch K2 being pulled upward to power circuit 20 exports, by the output clamper of the second way switch K2 at high level, make the second way switch K2 export the switching signal of high level to controller 12, controller 12 detects high level.
In the present embodiment, the principle of work of the circuit structure of the power control 10 shown in Fig. 3 specifically describes as follows:
When opening outlet valve, when having current to inject, the first via K switch 1 of current microswitch S1 and the second way switch K2 all closed under the pressure effect of current, power circuit 20 is connected, power circuit 20 is to controller 12 output voltage, for controller 12 provides operating voltage, controller 12 electric after enter holding state, with the detection input pin IN of Time Controller 12 through the second way switch K2 ground connection, namely the switching signal of the second way switch K2 output low level of current microswitch S1 is to controller 12, now illustrate that current are normal, controller 12 enters normal operating conditions after low level switching signal being detected, controller 12 pilot relay RY1 adhesive, controller 12 drives operating load output driving circuit 40 to connect by output driving circuit, control operating load 40 to work, operating load 40 comprises gas electromagnetic valve, motor exhaust and pulse igniter even load, namely motor exhaust connected by controller 12, pulse igniter and gas electromagnetic valve, water heater is made to enter normal operating conditions.
When closedown outlet valve, when not having current to inject, the distress resolves of current, the first via K switch 1 of current microswitch S1 and the second way switch K2 disconnect simultaneously, because relay R Y1 is still in attracting state, relay R Y1 connects with power circuit 20 and forms loop, power circuit 20 exports constant, because the second way switch K2 of current microswitch S1 disconnects, and the second way switch K2 receives the first voltage output end VCC1 of power circuit 20 through pull-up resistor R1, therefore the voltage that the first voltage output end VCC1 that the output of the second way switch K2 is pulled upward to power circuit 20 by pull-up resistor R1 exports, by the output clamper of the second way switch K2 at high level, the second way switch K2 is made to export the detection input pin IN of switching signal to controller 12 of high level, controller 12 detects the switching signal of high level, represent that now current are closed, when controller 12 detects that the state of the switching signal detecting input pin IN is low level, cut off the duty of operating load 40, namely gas electromagnetic valve is closed, motor exhaust is closed again after waiting for a period of time, last closed relay RY1, thus circuit 20 of cutting off the electricity supply, water heater enters the holding state not having power consumption, reach the object that water heater does not have power consumption in the standby state, realize zero stand-by power consumption of water heater.
In addition, the circuit structure advantages of simple of above-mentioned two embodiments provided by the invention, be easy to realize, be applied to water heater safety reliable, the technical scheme of the above embodiment of the present invention is applied to gas heater, technical scheme according to above-described embodiment slightly makes corresponding modify, also goes for the water heater of other types.
The present invention also proposes a kind of water heater, and this water heater comprises power control, and consistent all with above-described embodiment of the beneficial effect that the circuit structure of this power control, principle of work and this power control bring, repeats no more herein.
The foregoing is only the preferred embodiments of the present invention; not thereby the scope of the claims of the present invention is limited; every utilize instructions of the present invention 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 invention.
Claims (10)
1. a power control, is connected with power circuit, and is connected with operating load by output driving circuit, comprises mains electricity input end and controller, it is characterized in that, also comprise on-off circuit; Wherein:
Described mains electricity input end is connected with the input end of described power circuit by described on-off circuit, described on-off circuit connects described power circuit after promoting by water flow pressure, make described power circuit work, the output terminal of described power circuit is connected with the feeder ear of described controller, and be connected with described on-off circuit, the output terminal of described on-off circuit is connected with the input end of described controller, the output terminal of described controller is connected with the control end of described on-off circuit, and be connected with described operating load by described output driving circuit, the state of the switching signal that described controller exports according to described on-off circuit, control described operating load whether to work, and control described power circuit and whether work on.
2. power control as claimed in claim 1, it is characterized in that, the input end of described controller comprises multiple input pin, and the detection input pin of wherein said controller is connected with the output terminal of described on-off circuit; The output terminal of described controller comprises multiple output pin, and the control output pin of wherein said controller is connected with the control end of described on-off circuit; The feeder ear of described controller comprises power pins and grounding pin, and described power pins is connected with the first voltage output end of described power circuit, the equal ground connection of earth terminal of described grounding pin and described power circuit.
3. power control as claimed in claim 1, it is characterized in that, described on-off circuit comprises current microswitch, relay, driver and testing circuit; Wherein:
One end of described current microswitch is connected with described mains electricity input end, and is connected with the input end of described testing circuit, and the other end of described current microswitch is connected with described power circuit, and is connected with described testing circuit through the switch of described relay; The control output pin of described controller is connected through described driver one end with the coil of described relay, and the other end of the coil of described relay is connected to the second voltage output end of described power circuit; The output terminal of described testing circuit, as the output terminal of described on-off circuit, is connected with the detection input pin of described controller.
4. power control as claimed in claim 3, it is characterized in that, described on-off circuit also comprises pull-up resistor, and one end of described pull-up resistor is connected to the first voltage output end of described power circuit, and the other end is connected to the output terminal of described testing circuit.
5. power control as claimed in claim 4, it is characterized in that, described testing circuit comprises voltage regulation unit, current-limiting resistance and photo-coupler; Wherein:
One end of described voltage regulation unit is as the input end of described testing circuit, be connected with one end of described current microswitch, and be connected through the negative electrode of described current-limiting resistance with described photo-coupler, the other end of described voltage regulation unit is connected with the anode of described photo-coupler, and is connected with the other end of described current microswitch through the switch of described relay; The collector of described photo-coupler, as the output terminal of described testing circuit, is connected with the detection input pin of described controller, and is connected with the first voltage output end of described power circuit through described pull-up resistor, the grounded emitter of described photo-coupler.
6. power control as claimed in claim 5, it is characterized in that, described voltage regulation unit comprises diode group and first diode in parallel with described diode group, described diode group comprises at least two series connection and the identical diode of conducting direction, and described first diode is contrary with the conducting direction of described diode group.
7. power control as claimed in claim 6, it is characterized in that, described diode group comprises the second diode and the 3rd diode, described second diode and the 3rd Diode series, the series arm of described second diode and the 3rd diode and described first diodes in parallel; The negative electrode of described second diode is connected with one end of described current microswitch, the anode of described 3rd diode is connected with the other end of described current microswitch through the switch of described relay, the anode of described first diode is connected through the negative electrode of described current-limiting resistance with described photo-coupler, and the negative electrode of described first diode is connected with the anode of described photo-coupler.
8. power control as claimed in claim 1, it is characterized in that, described on-off circuit comprises current microswitch, relay and driver, and described current microswitch comprises first via switch and the second way switch; Wherein:
Described power circuit is connected with described mains electricity input end through described first via switch, and one end of described second way switch is connected with the detection input pin of described controller, the other end ground connection of described second way switch; The control output pin of described controller is connected through described driver one end with the coil of described relay, the other end of the coil of described relay is connected to the second voltage output end of described power circuit, the switch of described relay and described first via switch in parallel.
9. power control as claimed in claim 8, it is characterized in that, described on-off circuit also comprises pull-up resistor, and one end of described pull-up resistor is connected to the first voltage output end of described power circuit, and the other end is connected to the second way switch of described current microswitch.
10. a water heater, is characterized in that, comprises the power control according to any one of claim 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310019861.XA CN103075810B (en) | 2013-01-18 | 2013-01-18 | Power control device and water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310019861.XA CN103075810B (en) | 2013-01-18 | 2013-01-18 | Power control device and water heater |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107796125A (en) * | 2016-08-29 | 2018-03-13 | 中国市政工程华北设计研究总院有限公司 | Domestic gas instantaneous water heater fume emission safety device |
| CN106125808A (en) * | 2016-08-31 | 2016-11-16 | 成都策创科技有限公司 | A kind of feedback circuit of Control load condition |
| WO2019061172A1 (en) * | 2017-09-28 | 2019-04-04 | 深圳和而泰数据资源与云技术有限公司 | Load detection circuit and electronic device |
| CN108919728B (en) * | 2018-08-23 | 2023-09-26 | 深圳和而泰智能控制股份有限公司 | Control circuit |
| CN111023525B (en) * | 2019-12-18 | 2021-08-13 | 宁波奥克斯电气股份有限公司 | Control circuit and method and air conditioner |
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| US6426887B2 (en) * | 2000-07-05 | 2002-07-30 | Sharp Kabushiki Kaisha | Power control device, remote control receiving device and optical communication device with zero power consumption during standby |
| CN101936599A (en) * | 2009-06-29 | 2011-01-05 | 松下电工株式会社 | Heater and hair care device including the same |
| CN202133884U (en) * | 2011-06-15 | 2012-02-01 | 深圳龙多电子科技有限公司 | Standby zero power consumption circuit |
| CN202443282U (en) * | 2012-03-20 | 2012-09-19 | 彭海明 | Zero-power-consumption standby circuit |
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| CN202583744U (en) * | 2012-05-15 | 2012-12-05 | 珠海格力电器股份有限公司 | Quasi-zero power consumption standby control circuit device |
| CN202631998U (en) * | 2012-04-20 | 2012-12-26 | 无锡小天鹅股份有限公司 | On-off control circuit based on non-isolated power supply |
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| US6426887B2 (en) * | 2000-07-05 | 2002-07-30 | Sharp Kabushiki Kaisha | Power control device, remote control receiving device and optical communication device with zero power consumption during standby |
| CN101936599A (en) * | 2009-06-29 | 2011-01-05 | 松下电工株式会社 | Heater and hair care device including the same |
| CN202133884U (en) * | 2011-06-15 | 2012-02-01 | 深圳龙多电子科技有限公司 | Standby zero power consumption circuit |
| CN202443282U (en) * | 2012-03-20 | 2012-09-19 | 彭海明 | Zero-power-consumption standby circuit |
| CN202631998U (en) * | 2012-04-20 | 2012-12-26 | 无锡小天鹅股份有限公司 | On-off control circuit based on non-isolated power supply |
| CN202522887U (en) * | 2012-04-27 | 2012-11-07 | 佛山市顺德区瑞德电子实业有限公司 | Circuit device for realizing zero power consumption of shutdown/standby of appliance control panel |
| CN202583744U (en) * | 2012-05-15 | 2012-12-05 | 珠海格力电器股份有限公司 | Quasi-zero power consumption standby control circuit device |
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| CN103075810A (en) | 2013-05-01 |
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