CN1279384A

CN1279384A - Electric water heater

Info

Publication number: CN1279384A
Application number: CN 99110021
Authority: CN
Inventors: 沈天虎; 方子毅; 包勇
Original assignee: 沈天虎
Priority date: 1999-07-02
Filing date: 1999-07-02
Publication date: 2001-01-10

Abstract

An electric water heater able to automatically regulate hot water temp is composed of hot water temp sensor on hot water outlet, water inlet, cold water outlet, hot water outlet, automatic distribution system of cold and hot water, CPU with single-chip processor, diffecent circuits, and digital display.

Description

Electric heater

The utility model belongs to the water heater that heat-generating device is arranged, and the water heater of electric heating generating means is particularly arranged, and is the electroheating type shower specifically.

Electric heater in the prior art can be divided into instant electric water heater and heat-storage electric heater by Heating Characteristics.It is little that the instant electric water heater has a volume, and heating can provide the advantage of hot water continuously, but its electric power is big rapidly, generally needs to be difficult to be accepted by average family more than 8 kilowatts.Heat-storage electric heater electric power is less, generally get final product at 1.5～2.5 kilowatts, but its volume is big, and the heating-up time is long, can not in time provide hot water after the hot water of storing uses up, and gives to use to produce trouble.And these two kinds of water heaters all need manual adjustment leaving water temperature and flow washing the time spent, and it is convenient inadequately to use.

The purpose of this utility model is to overcoming above-mentioned defective, provide a kind of in a long time can hot water without interruption, volume is less, electrical power is relatively low, can regulate the electric heater easy to use of the leaving water temperature that sets automatically.

The technical solution of the utility model electric heater is to be provided with into water heat generating components in set storage heat pot in its shell, the water inlet pipe that is provided with water supply connector leads to storage heat pot with the hot water hot-water outlet pipe who is provided with shower valve, shell is provided with temperature and sets button, temperature increases button and temperature reduces button, storage heat pot is provided with storage heat pot temperature sensor, its special character is, described hot water outlet pipe is provided with hot water temperature's sensor, be connected with the cold water outlet pipe between described water inlet pipe and the hot water outlet pipe, cold water outlet pipe and hot water outlet pipe are provided with the hot and cold water automatic distribution system, be provided with central controller in the shell, central controller is provided with a single-chip microcomputer, each end of single-chip microcomputer input is connected with on-off circuit, the signal detector circuit, reset, oscillating circuit and power supply and sensor signal are selected amplifying circuit, and each end of single-chip microcomputer output is connected with digital display circuit, water inlet heat generating components control circuit, hot and cold water automatic distribution system control circuit and signal lamp control circuit.

Described hot and cold water automatic distribution system is to be located at hot water electric flow valve on the hot water outlet pipe and the cold water electric flow valve on the cold water outlet pipe, also can be the automatic distributing valve of being located at cold water outlet pipe and hot water outlet pipe junction; Correspondingly, described hot and cold water automatic distribution system control circuit is cold water electric flow valve controling circuit and hot water electric flow valve controling circuit, also can be the control circuit of described automatic distributing valve.

This electric heater can be provided with the inflow temperature sensor on described water inlet pipe, can also be connected with speech features control circuit and fast loud alarm control circuit at the output of described single-chip microcomputer.

For making this electric heater that boiling water can be provided, can on described shell, be provided with the boiling water button again, described outlet pipe is provided with the secondary heat generating components and is connected with the boiling water outlet pipe and which is provided with boiling water temperature sensor and boiling water magnetic valve, and described single-chip microcomputer output is connected with secondary heat generating components control circuit and boiling water solenoid valve control circuit.

For making this electric heater that hot blast can be provided, can on described shell, be provided with cold/hot blast switching button again, pendulum wind on/off button and blower fan on/off button, be provided with fan blade and blade motor in the described shell, and be provided with the low temperature heat generating components and its corresponding position of high-temperature heating part is provided with cryogenic temperature switch and high-temperature temperature switch, the shell lower edge is provided with blade-rotating and is provided with the blade-rotating motor and the blade-rotating angular transducer in shell, and described single-chip microcomputer output is connected with secondary heat generating components control circuit, hot blast heat generating components control circuit, blade motor control circuit and blade-rotating draught fan control circuit.

For making this electric heater that boiling water can be provided and hot blast can being provided, can on described shell, be provided with cold/hot blast switching button, pendulum wind on/off button, blower fan on/off button and boiling water button again, described outlet pipe is provided with the secondary heat generating components and is connected with the boiling water outlet pipe and which is provided with boiling water temperature sensor and boiling water magnetic valve, and described single-chip microcomputer output is connected with secondary heat generating components control circuit and boiling water solenoid valve control circuit; Be provided with fan blade and blade motor in the shell, and be provided with the low temperature heat generating components and its corresponding position of high-temperature heating part is provided with cryogenic temperature switch and high-temperature temperature switch, the shell lower edge is provided with blade-rotating and is provided with the blade-rotating motor and the blade-rotating angular transducer in shell, and described single-chip microcomputer output is connected with secondary heat generating components control circuit, hot blast heat generating components control circuit, blade motor control circuit and blade-rotating draught fan control circuit.

The utility model electric heater is set button owing to be provided with temperature, temperature increases button and temperature reduces button, and be provided with the inflow temperature sensor, hot water temperature's sensor and storage heat pot temperature sensor, also be provided with the central controller of tool single-chip microcomputer, be connected with on-off circuit on the single-chip microcomputer corresponding to described button, the signal that also is connected with signal detection circuit and described sensor is selected amplifying circuit and water inlet heat generating components control circuit, cold water electric flow valve controling circuit and hot water electric flow valve controling circuit, so this electric heater only needs to set in advance hot water effluent's temperature, the water inlet that central controller just can record according to sensor, the temperature signal of water outlet and storage heat pot, automatically regulate the opening degree of cold water electric flow valve and hot water electric flow valve, make leaving water temperature reach setting value, and can control automatically the water inlet heat generating components keying, guarantee under the situation of hot water without interruption, to reduce as much as possible electrical power.Be provided with the utility model electric heater of boiling water button, boiling water outlet pipe, boiling water temperature sensor, secondary heat generating components and control circuit thereof, boiling water solenoid valve control circuit, boiling water can also be provided.Be provided with the utility model electric heater of cold/hot blast switching button, pendulum wind on/off button and blower fan on/off button and fan blade, blade motor, high and low temperature heat generating components and relevant controlling circuit, hot blast can also be provided.A kind of the utility model electric heater of setting up described boiling water and hot body except that hot water is provided, can also provide boiling water and hot blast.

Describe embodiment of the present utility model in detail below in conjunction with accompanying drawing.

Fig. 1 is the utility model example 1 electric heater structural principle schematic diagram;

Fig. 2 is the utility model example 1 electric heater front schematic view;

Fig. 3 is an electric heater left view shown in Figure 1;

Fig. 4 is the A-A cutaway view of this electric heater corresponding diagram 2;

Fig. 5 is the B-B cutaway view of this electric heater corresponding diagram 2;

Fig. 6 is the utility model example 1 electric heater circuit block diagram;

Fig. 7-1,7-2,7-3-1,7-3-2,7-4-1,7-4-2,7-5,7-6,7-7,7-8,7-9,7-10 are the utility model example 1 electric heater electrical block diagrams, wherein:

Fig. 7-the 1st, single-chip microcomputer and interface circuit thereof comprise resetting and oscillating circuit, digital display circuit, news sound alarm control circuit, speech features control circuit part and signal lamp control circuit;

Fig. 7-the 2nd, zero cross signal, electric leakage signal detecting circuit and power supply;

Fig. 7-3-1 is the water level signal detecting circuit;

Fig. 7-3-2 is the water-flow signal detecting circuit;

Fig. 7-4-1 is under-voltage signal detection circuit;

Fig. 7-4-2 is the overvoltage signal detection circuit;

Fig. 7-the 5th advances water heat generating components, secondary heat generating components, hot blast heat generating components control circuit;

Fig. 7-the 6th, the boiling water solenoid valve control circuit;

Fig. 7-the 7th, sensor signal is selected amplifying circuit;

Fig. 7-the 8th, the blade-rotating draught fan control circuit;

Fig. 7-the 9th, the blade motor control circuit;

Fig. 7-the 10th, the speech features control circuit;

Fig. 8 is the utility model example 2 electric heater circuit block diagrams;

Fig. 9 is the utility model example 3 electric heater circuit block diagrams;

Figure 10 is the utility model example 4 electric heater circuit block diagrams.

Mark and symbolic representation among the figure: 1 cooling water inlet, 2 water supply connectors, 3 inflow temperature sensors, 4 water flow switches, 5 water inlet heat generating components, 6 water level switches, 7 storage heat pot temperature sensors, 8 storage heat pots, 9 hot water electric flow valves, 10 secondary heat generating components, 11 cold water check-valves, 12 cold water electric flow valves, 13 hot water temperature's sensors, 14 shower valves, 15 hot water outlets, 16 safety valves, 17 safety valve liberation ports, 18 boiling water temperature sensors, 19 boiling water magnetic valves, the outlet of 20 boiling water, 21 blade motors, 22 fan blades, 23 low temperature heat generating components, 24 high-temperature heating parts, 25 central controllers, 26 electric leakage indicator lamps, 27 lack of water indicator lamps, 28 under-voltage indicator lamps, 29 hot blast indicator lamps, 30 cool breeze indicator lamps, 31 hot water indicator lamps, 32 boiling water buttons, 33 temperature are set button, 34 temperature increase button, and 35 temperature reduce button, 36 colds/hot blast switching button, 37 pendulum wind on/off button, 38 blower fan on/off button, 39 control transformers, 40 speech synthesizers, 41 loudspeakers, 42 cryogenic temperature switches, 43 high-temperature temperature switches, 44 blade-rotatings, 45 blade-rotating angular transducers, 46 blade-rotating motors, 47 electrical shock protection switches, 48 shells, 49 heat-insulation layers, 50 blower fan seats, 51 secondary heat generating components overheat protectors, 52 air-inlet windows, 53 indication and controls panel with push-button, 54 earth leakage protective device switch doors, 55 power access ends, 56 motor piezoelectric transformers, 57 nixie displaies, 58 cold water electric flow valve motors, 59 hot water electric flow valve motors, 60 cold water outlet pipes, 61 water inlet pipes, 62 hot water outlet pipes, the 25-1 on-off circuit, the 25-2 signal detection circuit, 25-3 resets, oscillating circuit and power supply, the 25-4 sensor signal is selected amplifying circuit, the 25-5 single-chip microcomputer, the digital display circuit of 25-6,25-7 water inlet heat generating components control circuit, 25-8 secondary heat generating components control circuit, 25-9 hot blast heat generating components control circuit, 25-10 blade motor control circuit, 25-11 blade-rotating draught fan control circuit, 25-12 cold water electric flow valve controling circuit, 25-13 hot water electric flow valve controling circuit, 25-14 boiling water solenoid valve control circuit, the 25-15 news are rung the alarm control circuit, 25-16 speech features control circuit, 25-17 signal lamp control circuit; BFAN pendulum wind on/off button, BW DIAN YUAN power supply, the DR heat generating components of intaking, the GE photoelectrical coupler, GFAN blower fan on/off button, GLXH zero cross signal detecting circuit, GYXH overvoltage signal detection circuit, KSHAN boiling water button, KSHD hot water indicator lamp, the LDD indicator lamp that leaks electricity, LDXH electric leakage signal detecting circuit, LFD cool breeze indicator lamp, LRFAN cold/hot blast switching button, the ME motor, QSHD lack of water indicator lamp, the under-voltage indicator lamp of QYD, the under-voltage signal detection circuit of QYXH, RFD hot blast indicator lamp, RW hot water temperature sensor, SHLXH water-flow signal detecting circuit, SHWXH water level signal detecting circuit, the ST controllable silicon, the VCC power supply, the WD+ temperature increases button, the WD-temperature reduces button, the WDTJ temperature is set button, YY sound circuit, ZW inflow temperature sensor.

1 routine electric heater of embodiment referring to Fig. 1-Fig. 7, has the function and the corresponding construction of hot-water supply, boiling water, hot blast.Offer air-inlet window 52 on the shell 48 of electric heater; and being provided with boiling water instruction button 32, boiling water outlet 20, cooling water inlet 1, safety valve liberation port 17, hot water outlet 15, blade-rotating 44 and indication, control panel with push-button 53, the electric heater side is provided with earth leakage protective device switch door 54 and power access end 55.Be provided with storage heat pot 8 its peripheries in the shell 48 and be provided with heat-insulation layer 49.Being provided with into water heat generating components 5, water level switch 6 and storage heat pot temperature sensor 7 in storage heat pot 8 is electrically connected with set central controller 25 in the shell respectively.In the shell 48 and be provided with fan blade 22, blade motor 21, low temperature heat generating components 23, high-temperature heating part 24, blade-rotating motor 46 and blade-rotating angular transducer 45; also be provided with electrical shock protection switch 47, control transformer 39, motor piezoelectric transformer 55; also be provided with cold water check-valves 11, cold water electric flow valve 12, hot water temperature's sensor 13 in the shell 48, boiling water temperature sensor 18, boiling water magnetic valve 19, water supply connector 2, inflow temperature sensor 3, secondary heat generating components 10, secondary heat generating components overheat protector 51, safety valve 16 and hot water electric flow valve 9.Also be provided with boiling water button 32, temperature setting button 33, temperature increase button 34, temperature minimizing button 35, cold/hot blast switching button 36, pendulum wind on/off button 37 and blower fan on/off button 38 on the shell 48, and be provided with electric leakage indicator lamp 26, lack of water indicator lamp 27, under-voltage indicator lamp 28, hot blast indicator lamp 29, cool breeze indicator lamp 30 and hot water indicator lamp 31, also be provided with loudspeaker 41.

The circuit block diagram of this routine electric heater central controller 25 as shown in Figure 6, its circuit structure schematic diagram is as shown in Figure 7.The following describes the circuit structure and the principle of central controller 25.

1, single-chip microcomputer (25-5) and interface circuit thereof:

The center control section of central controller 25 is single-chip microcomputer U102.Its input port MCLR that resets directly inserts high level VCC.Concussion input/output terminal OSC1, OSC2 receive respectively behind the two ends of crystal oscillator JT101 more respectively by ground connection behind two capacitor C101, the C102.So just set up the basic environment of single-chip microcomputer U102 work.

1-1. the A mouth interface (Fig. 7-1) of single-chip microcomputer U102:

The AN0 of single-chip microcomputer U102, AN1 are configured to temperature simulation amount input and linear hall element analog quantity input, are connected respectively to output terminals A D1 and the AD2 of two sensor amplifier FDQ1 and FDQ2.RA2 and RA4 are arranged to address input end A and the B that data output is connected respectively to two 4 path analoging switch circuit U 101.The output X of two 4 tunnels analogy on-off circuit U101 and Y are connected respectively to input RT and the HR of TEMP amplifier FDQ1 and linear hall element sensor amplifier FDQ2.Wherein 4 input X0, X1, X2 and X3 of X group switch are connected respectively to 4 temperature sensors: running water temperature sensor ZW, storage heat pot temperature sensor BW, leaving water temperature sensor RW and boiling water temperature sensor KW.Y0, Y1 and the Y2 of Y group switch are connected respectively to 3 linear hall element sensors: wind page position sensor HL1, hot water electric flow valve position sensors HL2 and cold water electric flow valve position sensors HL3.The low level of the output RA2 of single-chip microcomputer U102 for two 4 path analoging switch circuit U, 101 addresses is set, RA4 is high-order, just can come above-mentioned two 101 4 temperature sensors of 4 path analoging switch circuit U of while gating and one of them of three linear hall element sensors by them.Select to import be exaggerated after temperature simulation amount AD1 or linear hall element analog quantity AD2, can select respectively to obtain from temperature simulation amount input AN0 or linear hall element analog quantity input AN1.

1-2. the B mouth interface (Fig. 7-1) of single-chip microcomputer U102:

The RB0 of single-chip microcomputer U102, RB1, RB4, RB5, RB6 and RB7 all are arranged to input, are connected respectively to the output of overvoltage signal detection circuit GYXH, under-voltage signal detection circuit QYXH, zero cross signal detecting circuit GLXH, electric leakage signal detecting circuit LDXH, water level signal detecting circuit SHWXH and water-flow signal detecting circuit SHLXH.Because each signal detection circuit all is made of comparator circuit, the output of each comparator all is connected to a pull-up resistor (consulting LDXH output, QLXH output, the SHWXH output of Fig. 7-3-1, the SHLXH output of Fig. 7-3-2, the QYXH output of Fig. 7-4-1 and the GYXH output of Fig. 7-4-2 of Fig. 7-2), so at above-mentioned signal is not true time, all inputs all present high level.When any signal was detected, corresponding input just became low level.Promptly so-called ' 0 ' effectively, and U102 just can respond this detecting signal and make corresponding processing.

1-3. the C mouth interface (Fig. 7-1) of single-chip microcomputer U102:

The RC0-RC6 of single-chip microcomputer U102 is arranged to input, is connected respectively to pull-up resistor R101-R107 and 7 buttons, the other end ground connection of all buttons.When any button was pressed, corresponding input just became low level.Also be ' 0 ' effectively.U102 just can respond this button signal and make corresponding processing.

1-4. the D mouth interface (Fig. 7-1) of single-chip microcomputer U102:

The RD mouth of single-chip microcomputer U102 is arranged to data output, and the RE mouth also all is arranged to data output.The operation of single-chip microcomputer U102 by the RE mouth to the distribution of the address of simulating 8 passage multicircuit switch U115 reach to latch U103-U108 any selection and to the data gating on the RD mouth data/address bus, thereby reach the partly realization of function of each output: the renewal of the show value of two display XS1, XS2; The allotment of the operating power of 6 heat generating components GF1-GF6; The adjusting of the open and close of blower fan FJ and 3 grades of wind speed; To the control of 3 circuit for controlling motor DJKZH, can regulate the flow size of cold water electric flow valve 12, hot water electric flow valve 9 and to the swing control of blade-rotating 44; To the tone of chimes of doom, the control at interval; Control respectively to 3 voice; Split water solenoid valve 19 work control and to and the control of water indicator lamp, electric leakage indicator lamp, lack of water indicator lamp, under-voltage indicator lamp, hot blast indicator lamp and 6 signal lamps of cool indication storm lantern.

Resistance R 108, R109 and capacitor C 103 connect into electrify restoration circuit.When powering on, automatically give reset signal of U103-U108, they can be automatically reset when powering on (zero clearing), make the circuit can be not out of control because of powering on.

2, each functional circuit of central controller:

2-1. on-off circuit 25-1 (Fig. 6, Fig. 7-1)

This on-off circuit is seven press button circuit, and its annexation has narration in the 1-3 bar of " single-chip microcomputer and interface circuit thereof ".

Temperature setting button WDTJ, temperature increase button WD+, temperature reduces RC mouth (RC0-RC6) input of an end of button WD-, cold/hot blast switching button LRFAl, pendulum wind on/off button BFAN, buttons such as blower fan on/off button GFAN, boiling water button KSHAN from single-chip microcomputer U102, and the other end ground connection of whole buttons.When not having button to press, input is drawn by pull-up resistor (R101-R108) and is high level, when arbitrary button pressed, and the level ground connection step-down ' effectively ' of corresponding input pin.

2-2. six signal detector circuit 25-2

2-2-1. zero cross signal detecting circuit (Fig. 7-2 GLXH)

The inverting input 6 of comparator U201:B is connected to by on resistance R 210, the dividing point of R211 to power supply VCC.Output 1 connects pull-up resistor R212 to power supply VCC, output zero cross signal GLXH.

Utilize the reverse blocking effect of diode D201, when bridge heap ZL201 anode output voltage is lower than the stored voltage of capacitor C 203, automatically shut down.Make that bridge heap anode output voltage is from the 0 unidirectional 100 hertz pulsating waveform to peak value.Voltage-stabiliser tube W201, resistance R 201 are connected the two ends of this unidirectional pulsating wave, are connected to the in-phase input end 7 of comparator U201:B from the negative terminal of voltage-stabiliser tube W201; And the inverting input 6 of comparator U201:B is connected by on resistance R 210, the dividing point of R211 to power supply VCC.

Making comparisons of in-phase end, just can detect its center time and the synchronous negative pulse sequence signal GLXH of civil power zero-crossing timing at output 1 from the unidirectional 100 hertz pulsating waveform of 0 to voltage-stabiliser tube W201 voltage stabilizing value and 0 the voltage of being slightly larger than at inverting input.

2-2-2. overvoltage signal detection circuit (Fig. 7-4-2 GYXH)

Resistance R 219, voltage-stabiliser tube W203 differential concatenation are input to the in-phase input end 9 of comparator U201:C at the constant voltage of series connection place on power supply VCC; The inverting input 8 of comparator U201:C is connected on the dividing point of voltage DY that resistance R 217 and R218 do not pass through voltage stabilizing; The output 14 of comparator U201:C connects pull-up resistor R220 to power supply VCC, output overvoltage signal GYXH.

Just often, the voltage stabilizing value that can not be higher than voltage-stabiliser tube W203 at rated value with interior voltage DY by R217, the later value of R218 dividing potential drop, just the voltage of the inverting input 8 of comparator U201:C can not be higher than the value of in-phase input end 9, and the output 14 of comparator U201:C is just moved high level to by pull-up resistor R220.In case voltage DY overrate, the voltage of the inverting input 8 of comparator U201:C just is higher than the value of in-phase input end 9, and its output 14 just becomes low level.

2-2-3. under-voltage signal detection circuit (Fig. 7-4-1 QYXH)

Resistance R 213, voltage-stabiliser tube W202 differential concatenation are input to the inverting input 10 of comparator U201:D at the constant voltage of series connection place on power supply VCC; The in-phase input end 11 of comparator U201:D is connected on resistance R 214 and the dividing point of R215 to voltage DY; The output 13 of comparator U201:D connects pull-up resistor R216 to VCC, exports under-voltage signal QYXH.

Just often, can not be lower than the voltage stabilizing value of voltage-stabiliser tube W202 by R214, the later value of R215 dividing potential drop with interior voltage DY at rated value, just the voltage of the in-phase input end 11 of comparator U201:D can not be lower than the value of inverting input 10, and the output 13 of comparator U201:D is just moved high level to by pull-up resistor R216.In case voltage DY is lower than rated value, the voltage of the in-phase input end 11 of comparator U201:D just is lower than the value of inverting input 10, and its output 13 just becomes low level.

2-2-4. electric leakage signal detecting circuit (Fig. 7-2 LDXH)

The

input

1,2 of earth leakage protective device LDBHQ is connected to civil power ACHI and ACLO, and

output

3,4 provides whole forceful electric power voltage ACHIBH, the ACLOBH except that control power transformer B201, and is connected to divider resistance R202, R203.Insert the ac input end of bridge heap ZL202 at the two ends of resistance R 203.The dc output end of bridge heap ZL202 is connected with the input light emitting diode forward of optical coupler by current-limiting resistance R204.The output 4 of optical coupler GE201 is connected to the in-phase input end 5 that is connected to comparator U201:A after capacitor C 206 and resistance 207 ground connection.Optical coupler output 3 is connected to power supply VCC by pull-up resistor R205.Resistance R 206, R208 are connected to the inverting input 4 of comparator U201:A after to power supply VCC dividing potential drop.The output 2 of U201:A is connected to power supply VCC by pull-up resistor R209, output electric leakage signal LDXH.

Because the control power supply directly inserts from civil power, has no progeny so earth leakage protective device LDBHQ closes, control system can also be worked.Just often, the

output

3,4 of optical coupler GE201 is because its

input

1,2 has pulsating current to pass through, give capacitor C 206 chargings so can connect resistance R 205 off and on, make voltage on the capacitor C 206 can not be lower than partial pressure value by resistance R 206, R208, be the inverting input 6 that the voltage of the in-phase input end 5 of comparator U201:A is higher than comparator U201:A, the output 2 of comparator U201:A is a high level always.Have no progeny when earth leakage protective device LDBHQ closes, capacitor C 206 has been because the charge circuit from resistance R 205 has not only been turn-offed in the disconnection of

optical coupler output

3,4, and by the discharge loop that resistance R 207 constitutes its voltage reduced rapidly.When in a single day the voltage of capacitor C 206 be lower than partial pressure value by resistance R 206, R208, comparator U201:A is upset immediately just, and its output becomes low level, output earth leakage protective signal LDXH.

2-2-5. water level signal detecting circuit (Fig. 7-3-1 SHWXH)

Sensing principle: magnet cartridge is on floating block, along with the height of water level is unsteady.Switching Hall components HL301 detects the position of magnet to determine whether water level puts in place.

The output of Hall element HL301 is connected to pull-up resistor R301 to power supply VCC, receive the in-phase input end 5 of comparator U119:A again, and its inverting input 4 is connected to divider resistance R302, the R303 dividing point to power supply VCC.The output 2 of comparator U119:A is connected to pull-up resistor R304 to power supply VCC, output water level signal SHWXH.

If water level does not arrive, it is far away that magnet leaves Hall element HL301, and Hall element HL301 is output as high level; When water level puts in place, magnet near the time, Hall element HL301 output becomes low level.Because follow-up circuit is same phase comparator circuit, the polarity of output signal is identical with the output signal of Hall element HL301.

2-2-6. water-flow signal detecting circuit (Fig. 7-3-2 SHLXH)

Sensing principle: porose magnet cartridge is similar to a porose bottle cap on buoyant pipe.Make its proportion be slightly larger than water, be contained in water inlet, allow the water inlet current all from the hole of magnet, pass through.When not having current, its heavy people bottom, it is far away that magnet leaves Hall element HL302; When current, it is shifted onto the top by current, and magnet is just near Hall element HL302, to define no current.

The circuit part principle is identical with the water level signal detecting circuit.

2-3. reset, oscillating circuit and power supply 25-3

2-3-1. reset, oscillating circuit (Fig. 7-1)

Existing narration in " 1, single-chip microcomputer (25-5) and interface circuit " thereof.The input port MCLR that resets of this central controller directly inserts high level VCC.Concussion input/output terminal OSC1, OSC2 receive respectively behind the two ends of crystal oscillator JT101 more respectively by ground connection behind two capacitor C101, the C102.Resistance R 108, R109 and capacitor C 103 connect into electrify restoration circuit.When powering on, automatically give reset signal of U103-U108, they can be automatically reset when powering on (zero clearing), make the circuit can be not out of control because of powering on.

2-3-2. power supply (Fig. 7-2 DIAN YUAN)

The control power supply connects ACHI, ACLO (civil power) by elementary 1,2 ends of transformer B201, and one group of secondary 5,6 output AC power source AC24HI, AC24LO are as the motor 58 of cold water electric flow valve 12, the motor 59 of hot water electric flow valve 9, the AC power of blade-rotating motor 46.Another is organized secondary 3,4 and is connected to the ac input end that rectifier bridge is piled ZL201.After the rectification, one the tunnel through isolating diode D201 output to three terminal regulator PV202 power input 1, capacitor C 203+end of end and capacitor C 204, another road is connected to the applied signal voltage DY end of the overvoltage signal detection circuit GYXH shown in the under-voltage signal detection circuit QYXH shown in Fig. 7-4-1 and Fig. 7-4-2, is connected to the negative terminal of Zener diode W201, the in-phase input end 7 of comparator U201:B through current-limiting resistance R201 again.The output 3 of three terminal regulator PV202 is connected to the input 1 of the anode of capacitor C 205 and three terminal regulator PV201 and supply voltage+12 is provided.The output 3 of three terminal regulator PV201 be connected to capacitor C 201 anode, capacitor C 202 an end and supply voltage VCC is provided.The whole ground connection of negative terminal of the other end of the negative terminal of 2 ends of two three terminal regulators, the anode of Zener diode W201, capacitor C 201, C203, C205, capacitor C 202, C204, rectifier bridge heap ZL201.

2-4. sensor signal is selected amplifying circuit 25-4 (Fig. 7-7 FDQ1-FDQ2)

This routine electric heater has seven sensors: inflow temperature sensor, storage heat pot temperature sensor, leaving water temperature sensor, boiling water temperature sensor, blade-rotating angular transducer, hot water electric flow valve position sensors and water inlet electric flow valve position sensors.

Be connected to power supply+12 after resistance R 701 and the Zener diode W701 differential concatenation, the negative pole of voltage-stabiliser tube connects capacitor C 701, C702, resistance R 703, the end of R707, the other end of resistance R 703 is connected to resistance R 702, the end of R705 and 1 end of potentiometer PR701, the other end of resistance R 702 connects resistance R 704, the end of R706 and 3 ends of potentiometer, the other end of resistance R 706 are connected 2 ends of potentiometer PR701 with the continuous back of the other end of resistance R 705,1 end of potentiometer PR702,2 ends, one end of resistance R 708, one end of capacitor C 703, one end of electric capacity 705 and the inverting input 8 of amplifier U119:C.After the other end of resistance R 708 connected 3 ends of potentiometer PR702, the resistance R 709 of going here and there was connected to the other end of C705, an end of resistance R 710, the output 14 and the analog quantity amplification output terminals A DR/ADH of amplifier.One end of the other end of R710 and capacitor C 704 is connected to power supply+12.Behind the other end of the in-phase input end 9 connection C703 of amplifier U119:C, the other end of R707, be connected to the transducing signal input HR/RT that selects distribution by two 4 path analoging switch circuit U 101.The other end ground connection of the anode of voltage-stabiliser tube W701, capacitor C 701, C702, C704 and R704.Constitute analog sensed amplifying circuit FDQ1-FDQ2.(corresponding each class sensor all has an amplifying circuit with spline structure, only is the parameter difference of part components and parts.)

Resistance R 701, capacitor C 701, Zener diode W701 form the voltage-stabilized power supply of sensor.Select one to select to be communicated with one of them and form the sensing bridge circuit by resistance R 702-R707 and potentiometer PR701, sensor HR group or RT group by two 4.Potentiometer PR701 is used for adjusting the sensing bridge circuit balance at zero point.Feedback resistance R709 and potentiometer PR702 form the negative feedback loop of amplifier U119:C, are used for the multiplication factor of resonance-amplifier.Capacitor C 702, C704 disturb and prevent concussion in order to eliminate.When the value of sensor HR or RT changed, amplifying circuit amplified by the multiple of setting up, and the value of output terminals A D1 or AD2 is exactly the analog value of sensing environment.

2-6. digital display circuit 26-6 (Fig. 7-1 XS1, XS2)

The connection of circuit narration in " the D mouth interface of 1-4. single-chip microcomputer U102 ".

In order to reduce to disturb, adopt static the demonstration.Two display XS1, XS2 adopt yang constipation structure altogether.Each is obtained after latch U103 and U104 are by Darlington integrated circuit U109 and the anti-phase amplification of U110 and shows that sign indicating number shows.Change the content that show value only need change corresponding latch U103, U104.Resistance R 122-128, R129-R135 are respectively the current-limiting resistances of each section input of XS1, XS2, make the brightness of display XS1, XS2 suitable.

2-7. water inlet heat generating components control circuit 25-7 (Fig. 7-5 GF1-GF6)

Be three same circuit, the circuit of the heating of the different capacity during separately to running water water inlet, intensification, insulation.

Optocoupler bidirectional triode thyristor GE501 input 1 is connected to power supply+12,2 ends and is connected to signal input part (any signal source of DR1-DR6) by current-limiting resistance R501; 4 ends are connected to the control end 1 of power bi-directional controllable silicon ST501; 3 ends are connected to divider resistance R502, the R503 dividing point to power supply ACHIBH and ACLOBH.2 ends of power bi-directional controllable silicon ST501 are connected to power supply ACHIBH, and the other end is connected to 1 end of heat generating components DR1-DR6.2 ends of heat generating components DR1-DR6 are connected to power supply ACLOBH.

Optocoupler bidirectional triode thyristor GE501 isolates forceful electric power, makes it avoid the impact of high pressure by resistance R 502, R503 to the forceful electric power dividing potential drop at its output.When giving its low level of input (RD1-RD6), 3,4 conductings of optical coupler GEQ501 output, the partial pressure value of R502, R503 is injected into the control end 1 of power control bidirectional triode thyristor ST501, make power bi-directional controllable silicon ST501 conducting, connect heat generating components (DR1-DR6) and get electric work.When this control signal became high level, optocoupler bidirectional triode

thyristor GE501 output

3,4 disconnected, and power control bidirectional triode thyristor ST501 is turn-offed thereupon, and heat generating components (DR1-DR6) outage quits work.(corresponding each heat generating components all has a circuit with spline structure, only is the parameter difference of part components and parts.)

2-8. secondary heat generating components control circuit 25-8 (Fig. 7-5)

It constitutes with " 2-7. water inlet heat generating components control circuit 25-7 ".

2-9. hot blast heat generating components control circuit 25-9 (Fig. 7-5)

2-10. blade motor control circuit 25-10 (Fig. 7-9 FJ)

The control object is condenser type monophase machine FJ1, is used for regulating the wind-force size.The input 1 of 4 optocoupler bidirectional triode thyristor GE901-GE904 all is connected to power supply+12, and the input 2 of optocoupler bidirectional triode thyristor GE901 is connected to control signal input QD by current-limiting resistance R901; The input 2 of optocoupler bidirectional triode thyristor GE902 is connected to control signal input FS1 by current-limiting resistance R902; The input 2 of optocoupler bidirectional triode thyristor GE903 is connected to control signal input FS2 by current-limiting resistance R903; But the input 2 of the two-way silicon GE904 of optocoupler is connected to control signal input FS3 by current-limiting resistance R904;

3 ends of the output of optocoupler bidirectional triode thyristor GE901-GE904 connect together to link together with 2 ends of power bi-directional controllable silicon ST901-ST904 again and link to each other with power supply ACHIBH end.The output 3 of power bi-directional controllable silicon ST901 links to each other with 4 ends of the startup winding of blower motor FJ1 by starting capacitor C 901; The output of power bi-directional controllable silicon ST902 links to each other with 3 ends of the work winding of blower motor FJ1; The output 3 of power bi-directional controllable silicon ST903 links to each other with 2 ends of the work winding of blower motor FJ1; The output 3 of power bi-directional controllable silicon ST904 links to each other with 1 end of the work winding of blower motor FJ1; Power supply ACLOBH end is connected to 5 ends (is to start the common point that winding connects together with the work winding in blower motor inside).

When 4 input signals (QD, FS1, FS2, FS3) when all being high level, because of all controllable silicons all are turned off, the motor outage stops; When input signal (U211-C7) made an end 4 that starts winding connect with power supply ACHIBH by splitting phase capacitor C 901 for low level, change input signal FS1, the arbitrary place of FS2, FS3 were low level, just can change one of third gear rotating speed of this motor.

2-11. blade-rotating draught fan control circuit 25-11 (Fig. 7-8 DJKZH)

The control object is the single-phase reversible electric machine ME1 of condenser type, is used for controlling the reversible rotation of the motor and the blade-rotating motor 46 of hot water electric flow valve 9, cold water electric flow valve 12.Input 1 end of 4 optocoupler bidirectional triode thyristor GE801-GE804 all is connected to power supply+12, and 2 ends of optocoupler bidirectional triode thyristor GE801, GE804 are connected to control signal input MD+ by current-limiting resistance R801 after linking to each other; 2 ends of optocoupler bidirectional triode thyristor GE802, GE803 are connected to control signal input MD-by current-limiting resistance R802 after linking to each other.

After linking to each other, the output 3 of optocoupler bidirectional triode thyristor GE801, GE803 is connected to an end AC24HI of AC power; 4 ends respectively with an

end

1,2 separately that is connected to two windings of motor ME1 after 3 ends of optocoupler bidirectional triode thyristor GE802, GE804 link to each other.Went here and there after 4 ends of optocoupler bidirectional triode thyristor GE802, GE804 link to each other and started the AC24HI end that capacitor C 801 also is connected to AC power.3 ends of motor M E1 are connected to the AC24LO end (it is the other end of two windings, and they link together at motor internal) of AC power.

When control signal MD+ be low level, when MD-is high level, optocoupler bidirectional triode thyristor GE801, GE804 conducting.The terminals 1 of a winding of motor are received power supply AC24HI as the work winding and the terminals 2 of another winding are used as and start winding and receive power supply AC24HI by splitting phase capacitor C 801.If this moment, motor ME1 was for just changeing, so, as MD+, when the MD-signal level is opposite, the connection of the work winding of motor and startup winding is exchanged, and motor then reverses.When the signal of MD+, MD-all was high level, 4 optocoupler bidirectional triode thyristor GE801-GE804 bridge circuits all were turned off, and motor ME1 dead electricity stops.

2-12. cold water electric flow valve controling circuit 25-12 (Fig. 7-8)

It constitutes with " 2-11. blade-rotating draught fan control circuit 25-11 ".

2-13. hot water electric flow valve controling circuit 25-13 (Fig. 7-8)

It constitutes with " 2-11. blade-rotating draught fan control circuit 25-11 ".

2-14. boiling water solenoid valve control circuit 25-14

It constitutes with " 2-7. intake heat generating components control circuit 25-7 (Fig. 7-5 GF1-GF6) ".

2-15. news are rung alarm control circuit 25-15 (Fig. 7-1)

The C3R of Darlington integrated circuit U113 is connected to power supply VCC by pull-up resistor R110, is connected to the input of loudspeaker again by coupling capacitor C 104; At ordinary times, make the C3 output high level of Darlington integrated circuit U113, loudspeaker is sounding not.When the low-and high-frequency alternation of C3 in audiorange of control U113, this signal makes loudspeaker Y101 obtain tone currents and sounding by current-limiting resistance R111 and R112 by coupling capacitor C 104.

2-16. speech features control circuit 25-16 (Fig. 7-1, Fig. 7-10 YY)

There is circuit YY1, YY2, the YY3 of 3 different voice the inside of sound circuit YY.The power input VCC of each circuit is connected to power supply VCC, and the speech output end Y of each circuit is connected respectively to the base stage of triode V1001, V1002, V1003.C4, the C5 that the power ground end Y1 of each circuit, Y2, Y3 are connected respectively to Darlington integrated circuit U113, C6 end.The colelctor electrode of each triode all is connected to power supply VCC, and the emitter stage of each triode was all gone here and there current-limiting resistance R1001, R1002, R1003 and coupling capacitance C1001, C1002, C1003 respectively and linked together at output voice signal OUT.

Loudspeaker Y101 also is connected on the audio output OUT of sound circuit YY.Three output C4-C6 of Darlington integrated circuit U113 are connected respectively to the power ground end Y1-Y3 of three different phonological components of speech IC YY inside.The arbitrary position of C4, C5, C6 of control Darlington integrated circuit U113 is a low level, and corresponding voice just send to loudspeaker Y101 by coupling capacitor C 105.

2-17. signal lamp control circuit 25-17 (Fig. 7-1)

Boiling water signal lamp KSHD, electric leakage signal lamp LDD, lack of water signal lamp QSHD, under-voltage signal lamp QYD, hot blast signal lamp RFD, cool breeze signal lamp LFD are served as by light emitting diode.Their positive pole all is connected on the power positive end VCC, and negative terminal is connected on each output of Darlington integrated circuit U114 by current-limiting resistance R116-R121.Control principle is identical with display circuit.

This routine electric heater has the function and the corresponding construction of hot-water supply, boiling water, hot blast.

Below an explanation is done in the work and the use of this electric heater:

1, installation and debugging

This water heater is set button 33, temperature increase button 34, temperature minimizing button 35, shower valve 14, boiling water button 32, blower fan on/off button 38, pendulum wind on/off button 37 and cold/hot blast switching button 36 for the manual control except temperature, and other observing and controlling are all finished by central controller automatically with adjusting.

During new clothes, connect water pipe, energising, after central controller 25 self checks were normal, water heater showed the leaving water temperature value that sets (this value can be the value between the inflow temperature to 45 ℃), it is normal to show that loudspeaker 41 sends a long sound.

Before 8 water inlets of storage heat pot, open hot water electric flow valve 9 automatically, during water inlet, air is discharged through hot water electric flow valve 9 and shower valve 14, and simultaneously, water inlet heat generating components 5 is opened; If shower valve 14 is closed, just open boiling water magnetic valve 19 automatically, air is discharged from boiling water magnetic valve 19.When 8 water inlets of storage heat pot put in place, if shower valve 14 is opened, loudspeaker sounding prompting user closed shower valve, and after this valve cut out, storage heat pot entered the heating and heat preservation state.If this valve does not cut out yet after 10 seconds of setting, illustrate that the user is using hot water, water heater enters the hot-water supply duty.

The inflow temperature that records according to inflow temperature sensor 3 and the leaving water temperature of setting, the automatic preset cold water of water heater electric flow valve 12 and hot water electric flow valve 9 make leaving water temperature and flow trend towards setting value.

Automatically detect the state of water flow switch 4 during 8 water inlets of storage heat pot,, automatically shut down storage heat pot electric heating element 5 immediately, in order to avoid empty the burning if cut off the water supply.

2, storage heat pot heating and heat preservation state

When storage heat pot enters the heating and heat preservation state, store heat pot temperature sensor 7 and measure the interior water temperature of pot, if water temperature does not arrive setting value (for example 70～85 ℃), then continue heating, arrived setting value, then turn-off water inlet heat generating components 5, this moment, hot water indicator lamp 31 was bright, and boiling water button 32 is effective.

3, hot-water supply duty

When water heater enters the hot-water supply duty, hot water temperature's sensor 13 constantly tests out coolant-temperature gage with automatic adjusting cold water electric flow valve 12 and hot water electric flow valve 9, makes leaving water temperature remain setting value.Simultaneously, storage heat pot temperature sensor 7 is measured water temperature in pot, and this water temperature reaches setting value (for example 70～85 ℃) and just closes into water heat generating components 5, otherwise opens this heat generating components.When hot water electric flow valve 9 reaches big and leaving water temperature is also too low, then according to water temperature in storage heat pot of measuring, when if this water temperature descends near the leaving water temperature of setting, hot water indicator lamp 32 extinguishes, when dropping to the leaving water temperature that equals to set again, just open secondary heat generating components 10 automatically and heat up, intake this moment heat generating components 5 the adds power that power deducts secondary heat generating components 10 automatically, loudspeaker sounding and voice suggestion: " hot water flow will reduce " to quicken water outlet.If leaving water temperature is lower than setting value, just turn down automatically until turn-offing cold water electric flow valve 12, if leaving water temperature still is low, then turn down the hot water electric flow valve automatically, to guarantee leaving water temperature.

4, button signal input

Temperature setting button 33 is pressed in the setting duration of back (temperature shows flicker at this moment), and temperature increases button 34 and temperature minimizing button 35 is pressed effectively.Whenever increase button by a temperature, design temperature increases by 1 degree, till 45 degree; Whenever reduce button by a temperature, design temperature reduces by 1 degree, till equaling inflow temperature.

During the blower fan stall, pressing blower fan on/off button 38 rotates blower fan, high and low temperature

heat generating components

23,24 is by preceding one action state running, if be in not heated cold wind state, just be transformed into the hot blast state of heating by cold/hot blast switching button 36, when using hot water or boiling water, this heating power is less, otherwise heating power is bigger.Blade-rotating 44 is also by preceding one action state running.Click blower fan on/off button 38 again, the blower fan stall, the high and low temperature heat generating components turn-offs, and blade-rotating returns back to closure state.

When hot water indicator lamp 31 is lighted and do not used hot water, press boiling water button 32 and just can provide boiling water.This moment, the secondary heat generating components 10 was opened running, and when the temperature of decontroling boiling water button or storage heat pot 8 reduced pyrogenicity water indicator lamp and extinguishes, boiling water magnetic valve 11 and secondary heat generating components 10 were turn-offed in the lump, forward storage heat pot 8 heating and heat preservation states to.

2 routine electric heaters of embodiment have the function and the corresponding construction of hot-water supply, its circuit block diagram as shown in Figure 8, default boiling water, hot blast part but its machinery and circuit part constitute the formation of reference example 1 do not repeat them here.

3 routine electric heaters of embodiment have the function and the corresponding construction of hot-water supply, boiling water, its circuit block diagram as shown in Figure 9, the default hot blast part but its machinery and circuit part constitute the formation of reference example 1 does not repeat them here.

4 routine electric heaters of embodiment have the function and the corresponding construction of hot-water supply, hot blast, its circuit block diagram as shown in Figure 9, the default boiling water part but its machinery and circuit part constitute the formation of reference example 1 does not repeat them here.

5 routine electric heaters of embodiment, adopt a cold water electric flow valve 12 and a hot water electric flow valve 9 in automatic distributing valve replacement example 1～example 4, this automatic distributing valve is installed on cold water outlet pipe 60 and hot water outlet pipe 62 junctions, also can be installed on cold water outlet pipe 60 and water inlet pipe 61 junctions, correspondingly be connected with cold water electric flow valve controling circuit 25-12 and the hot water electric flow valve controling circuit 25-13 that automatic distributing valve control circuit replaces example 1～example 4 at single-chip microcomputer 25-5 output.Other structures can be with any example of example 1～example 4 identical.

Claims

1, electric heater, be provided with into water heat generating components (5) in set storage heat pot (8) in the shell (48), the hot water hot-water outlet pipe (62) who is provided with the water inlet pipe (61) of water supply connector (2) and is provided with shower valve (14) leads to storage heat pot (8), shell is provided with temperature and sets button (33), temperature increases button (34) and temperature reduces button (35), storage heat pot (8) is provided with storage heat pot temperature sensor (7), it is characterized in that, described hot water outlet pipe is provided with hot water temperature's sensor (13), be connected with cold water outlet pipe (60) between described water inlet pipe and the hot water outlet pipe, cold water outlet pipe (60) is provided with the hot and cold water automatic distribution system with the hot water outlet pipe, be provided with central controller (25) in the shell (48), central controller (25) is provided with a single-chip microcomputer (25-5), each end of single-chip microcomputer (25-5) input is connected with on-off circuit (25-1), signal detector circuit (25-2), reset, oscillating circuit and power supply (25-3) and sensor signal are selected amplifying circuit (25-4), and each end of single-chip microcomputer output is connected with digital display circuit (25-6), water inlet heat generating components control circuit (25-7), hot and cold water automatic distribution system control circuit and signal lamp control circuit (25-17).

2, electric heater as claimed in claim 1, it is characterized in that described hot and cold water automatic distribution system is to be located at hot water electric flow valve (9) on the hot water outlet pipe (62) and the cold water electric flow valve (12) on the cold water outlet pipe (60), or be located at the automatic distributing valve of cold water outlet pipe (60) and hot water outlet pipe (62) or water inlet pipe (61) junction; Correspondingly, described hot and cold water automatic distribution system control circuit is a cold water electric flow valve controling circuit (25-12)) and hot water electric flow valve controling circuit (25-13), or the control circuit of described automatic distributing valve.

3, electric heater as claimed in claim 2 is characterized in that described water inlet pipe is provided with inflow temperature sensor (3), and the output of described single-chip microcomputer also is connected with speech features control circuit (25-16) and fast loud alarm control circuit (25-15).

4, as claim 1,2 or 3 described electric heaters, it is characterized in that also being provided with on the shell (48) boiling water button (32), described hot water outlet pipe is provided with secondary heat generating components (10) and cold water check-valves (11) and is connected with the boiling water outlet pipe and which is provided with boiling water temperature sensor (18) and boiling water magnetic valve (19), and described single-chip microcomputer (25-5) output is connected with secondary heat generating components control circuit (25-8) and boiling water solenoid valve control circuit (25-14).

5, as claim 1,2 or 3 described electric heaters, it is characterized in that also being provided with on the shell (48) cold/hot blast switching button (36), pendulum wind on/off button (37) and blower fan on/off button (38), be provided with fan blade (22) and blade motor (21) in the shell (48), and be provided with low temperature heat generating components (23) and its corresponding position of high-temperature heating part (24) is provided with cryogenic temperature switch (42) and high-temperature temperature switch (43), the shell lower edge is provided with blade-rotating (44) and is provided with blade-rotating motor (46) and blade-rotating angular transducer (45) in shell, and described single-chip microcomputer (25-5) output is connected with secondary heat generating components control circuit (25-8), hot blast heat generating components control circuit (25-9), blade motor control circuit (25-10) and blade-rotating draught fan control circuit (25-11).

6, as claim 1,2 or 3 described electric heaters, it is characterized in that also being provided with on the shell (48) cold/hot blast switching button (36), pendulum wind on/off button (37), blower fan on/off button (38) and boiling water button (32), described outlet pipe is provided with secondary heat generating components (10) and is connected with the boiling water outlet pipe and which is provided with boiling water temperature sensor (18) and boiling water magnetic valve (19), and described single-chip microcomputer (25-5) output is connected with secondary heat generating components control circuit (25-8) and boiling water solenoid valve control circuit (25-14); Be provided with fan blade (22) and blade motor (21) in the shell (48), and be provided with low temperature heat generating components (23) and its corresponding position of high-temperature heating part (24) is provided with cryogenic temperature switch (42) and high-temperature temperature switch (43), the shell lower edge is provided with blade-rotating (44) and is provided with blade-rotating motor (46) and blade-rotating angular transducer (45) in shell, and described single-chip microcomputer (25-5) output is connected with secondary heat generating components control circuit (25-8), hot blast heat generating components control circuit (25-9), blade motor control circuit (25-10) and blade-rotating draught fan control circuit (25-11).

7, as claim 1,2 or 3 described electric heaters, it is characterized in that:

Described on-off circuit (25-1) is to set the three press button circuit that button (33), temperature increase button (34) and temperature reduce button (35) corresponding to temperature, be respectively equipped with pull-up resistor R101-R103 with respect to these buttons in the on-off circuit and constitute " 0 " effective three button circuits, be connected the input RC mouth of single-chip microcomputer (25-5);

Described signal detection circuit (25-2) is that six signal detection circuits comprise overvoltage signal detection circuit GYXH, under-voltage signal detection circuit QYXH, electric leakage signal detecting circuit LDXH, zero cross signal detecting circuit GLXH, water level signal detecting circuit SHWXH, water-flow signal detecting circuit SHLXH, is connected single-chip microcomputer input RB mouth;

Describedly reset, oscillating circuit and power supply (25-3) be made of resistance R 108, R109, capacitor C 103, the crystal oscillator JT101 of series connection and capacitor C 101 that two ends connected thereof and C102 and mu balanced circuit cells D IAN YUAN;

Described sensor signal selects amplifying circuit (25-4) to select 1 simulation on-off circuit U101 and 3 temperature sensors and 2 linear hall elements to constitute by two 4, these 3 temperature sensors are inflow temperature sensor ZW, storage heat pot temperature sensor BW and hot water temperature's sensor RW, and 2 linear hall elements are hot water electric flow valve position sensors HL2T and water inlet electric flow valve position sensors HL3;

Described single-chip microcomputer (25-5) is single-chip microcomputer U102, after having set up above-mentioned input circuit, by comprising that simulation 8 passage multicircuit switch U115, latch U103-U108, Darlington integrated circuit U109-U114 constitute the selection and the control of whole outputs;

Described digital display circuit (25-6) be used to show the water outlet design temperature by 2 positive charactron XS1, XS2 and 14 two digits displays that current-limiting resistance R122-R128, R129-R135 constitute altogether;

Described water inlet heat generating components control circuit (25-7) is three same circuit, respectively by photoelectrical coupler GE control power controlled silicon ST to heat generating components DR intake promptly that the open and close of heat generating components (5) reach the running water water inlet, heat up, the circuit of the heating of different capacity during insulation;

Described cold water electric flow valve controling circuit (25-12) is the bridge circuit that is made of 4 photoelectricity coupling two-way controllable silicon GE801-GE804;

Its structure of described hot water electric flow valve controling circuit (25-13) is with cold water electric flow valve controling circuit (25-12);

Described news are rung alarm control circuit (25-15) and are made of 1 pull-up resistor R110 and coupling capacitor C 104;

Described speech features control circuit (25-16) is to be connected to the circuit of input voltage and output audio together by sound circuit YY1, YY2, power supply+end of YY3, audio output corresponding to 3 different phonetic contents;

Described signal lamp control circuit (25-17) is to connect hot water indicator lamp KSHD, electric leakage indicator lamp LDD, lack of water indicator lamp QSHD, under-voltage indicator lamp QYD, hot blast indicator lamp RFD and the cool breeze indicator lamp LFD that 6 light emitting diodes constitute respectively by current-limiting resistance R116-R121, light emitting diode+holding links together is connected to power supply VCC.

8, electric heater as claimed in claim 4 is characterized in that:

Described on-off circuit (25-1) is four press button circuit of setting button (33), temperature increase button (34), temperature minimizing button (35) and boiling water button (32) corresponding to temperature, is respectively equipped with pull-up resistor R101-R104 with respect to these buttons in the on-off circuit and constitutes " 0 " effective four buttons

Circuit is connected the input RC mouth of single-chip microcomputer (25);

Describedly reset, oscillating circuit and power supply (25-3) be made of resistance R 108, R109, capacitor C 103, the crystal oscillator JT101 of series connection and capacitor C 101 that two ends connected thereof and C102 and mu balanced circuit cells D IAN YUAN.

Described sensor signal selects amplifying circuit (25-4) to select 1 simulation on-off circuit U101 and 4 temperature sensors and 2 linear hall elements to constitute by two 4, these 4 temperature sensors are inflow temperature sensor ZW, storage heat pot temperature sensor BW, hot water temperature's sensor RW and boiling water temperature sensor KW, and 2 linear hall elements are hot water electric flow valve position sensors HL2T and water inlet electric flow valve position sensors HL3;

Described secondary heat generating components control circuit (25-8) structure is same as into water heat generating components control circuit (25-7);

Its structure of described hot water electric flow valve controling circuit (25-13) is same as cold water electric flow valve controling circuit (25-12);

Its structure of described boiling water solenoid valve control circuit (25-14) be same as into water heat generating components control circuit (25-7) just load be that magnetic valve is replaced heat generating components;

Described signal lamp control circuit (25-17) is to connect hot water indicator lamp KSHD, electric leakage indicator lamp LDD, lack of water indicator lamp QSHD, the under-voltage indicator lamp QYD that 4 light emitting diodes constitute respectively by current-limiting resistance R116-R119, light emitting diode+holding links together is connected to power supply VCC.

9, electric heater as claimed in claim 5 is characterized in that:

Described on-off circuit (25-1) is six press button circuit of setting button (33), temperature increase button (34), temperature minimizing button (35), cold/hot blast switching button (36), pendulum wind on/off button (37) and blower fan on/off button (38) corresponding to temperature, be respectively equipped with pull-up resistor R101-R107 with respect to these buttons in the on-off circuit and constitute " 0 " effective six button circuits, be connected the input RC mouth of single-chip microcomputer (25);

Described sensor signal selects amplifying circuit (25-4) to select 1 simulation on-off circuit U101 and 3 temperature sensors and 3 linear hall elements to constitute by two 4, these 3 temperature sensors are inflow temperature sensor ZW, storage heat pot temperature sensor BW and hot water temperature's sensor RW, and 3 linear hall elements are blade-rotating angular transducer HL1, hot water electric flow valve position sensors HL2T and water inlet electric flow valve position sensors HL3;

Described hot blast heat generating components control circuit (25-9) structure is same as into water heat generating components control circuit (25-7);

Described blade motor control circuit (25-10) is the circuit of being made up of 4 photoelectricity coupling two-way controllable silicon GE901-GE904 control power controlled silicon ST901-ST904 separately that is used for the stepping opening and closing of blade motor (21);

Described blade-rotating draught fan control circuit (25-11) is to the single-phase reversible electric machine ME1 of condenser type workpiece winding and starts the Close All of winding and switch the bridge circuit that is made of 4 photoelectricity coupling two-way controllable silicon GE801-GE804 that reaches the stopping of motor, rotating operation mutually;

Its structure of described cold water electric flow valve controling circuit (25-12) is same as blade-rotating draught fan control circuit (25-11);

Its structure of described hot water electric flow valve controling circuit (25-13) is same as blade-rotating draught fan control circuit (25-11);

Described signal lamp control circuit (25-17) is to connect electric leakage indicator lamp LDD, lack of water indicator lamp QSHD, under-voltage indicator lamp QYD, hot blast indicator lamp RFD and the cool breeze indicator lamp LFD that 5 light emitting diodes constitute respectively by current-limiting resistance R116-R120, light emitting diode+holding links together is connected to power supply VCC.

10, electric heater as claimed in claim 6 is characterized in that:

Described on-off circuit (25-1) is seven press button circuit of setting button (33), temperature increase button (34), temperature minimizing button (35), cold/hot blast switching button (36), pendulum wind on/off button (37), blower fan on/off button (38) and boiling water button (32) corresponding to temperature, be respectively equipped with pull-up resistor R101-R107 with respect to these buttons in the on-off circuit and constitute " 0 " effective seven button circuits, be connected the input RC mouth of single-chip microcomputer (25);

Described sensor signal selects amplifying circuit (25-4) to select 1 simulation on-off circuit U101 and 4 temperature sensors and 3 linear hall elements to constitute by two 4, these 4 temperature sensors are inflow temperature sensor ZW, storage heat pot temperature sensor BW, hot water temperature's sensor RW and boiling water temperature sensor KW, and 3 linear hall elements are blade-rotating angular transducer HL1, hot water electric flow valve position sensors HL2T and water inlet electric flow valve position sensors HL3;

Described secondary heat generating components control circuit (25-8) structure is with water inlet heat generating components control circuit (25-7);

Its structure of described boiling water solenoid valve control circuit (25-14) same water inlet heat generating components control circuit (25-7) just load is that magnetic valve is replaced heat generating components;