CN100451457C - High-frequency household electric heater and water heater - Google Patents
High-frequency household electric heater and water heater Download PDFInfo
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- CN100451457C CN100451457C CNB2006101072233A CN200610107223A CN100451457C CN 100451457 C CN100451457 C CN 100451457C CN B2006101072233 A CNB2006101072233 A CN B2006101072233A CN 200610107223 A CN200610107223 A CN 200610107223A CN 100451457 C CN100451457 C CN 100451457C
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Abstract
This invention relates to a household electronic warming oven and water heater by using bow wave produced by the high-rate electricity to get induction heating. The high-rate household electronic warming oven and water heater have wall type or land type shell inside which there is heating unit of the magnet water tank which has water intake, hot water outfall or back water gap. There is the water-control switch on the water intake passage and cycling water pump at the water intake of the warming oven. The top of the water tank induces safe switch. The inside of the warming oven shell sets high rate electricity producing and temperature controlling circuits. The high rate electricity producing device includes the producing and controlling circuit of the PWM adjusting signal and the output end of the electricity source connects to the bow wave loop circuit which wraps around the outside of the water tank. The high rate electronic warming oven and water heater has no open flame, no pollution, high heat efficiency, saving electricity. The heating unit does not touch the water and no creepage which guarantees the safety and reliability.
Description
One, technical field:
The present invention relates to a kind of household electric heater and water heater, particularly relate to a kind of high frequency electric that utilizes and produce high-frequency household electric heater and water heater that eddy current carries out eddy-current heating.
Two, background technology:
The most of area of China is in high latitude zone, the Northern Hemisphere, and winter, natural temperature was lower, and people adopt the way of heating to resist severe winter more.Traditional in the past heating method is central heating; owing to be subjected to the each place condition restriction; promoting the use of of central heating is very limited; the thermal loss problem that pipeline transmission causes is difficult to solve always; along with the exploitation of the limited available resources of society, All Around The World has been absorbed in energy crisis at present, causes combustion gas, coal equal energy source price to skyrocket; the consumption of resident expenditure is more and more higher, has reduced national quality of life and level relatively.
Electric power progressively is subjected to human attention as a kind of regenerative resource, except industrial application, more towards traffic, civil area development.The household electrical appliance that are used for Home Heating and water supply are replacing Sheng and are reaching gas furnace for the moment, because the combustion gas imperfect combustion can produce pernicious gas, the people are poisoned; Cause combustion gas to reveal in case gas heater or kitchen range break down, also can produce explosion danger; And the advantage of electrical heaters tool just is being this.Previously used storage-type electric water heater, comprise various open types, closed, adopt electrical bar directly to insert and make heating element heater in the water, adopt electric hot tray or ceramic body conduction heating, the electrical bar time has been grown and must amass dirt and its heat transfer efficiency is reduced, in case and electric hot tray or ceramic body overtemperature hardening crack, just might cause the danger of electric leakage, reduced the reliability of electric heater; It also has a very big shortcoming is that the thermal efficiency is low, the waste electric energy.Just Given this,, utilize electromagnetism to produce the electric heating appliance of eddy current now owing to do not burn, the flames of anger, thermal efficiency height does not produce the welcome that pernicious gas is subjected to the consumer.The thermal efficiency that experiment showed, the current vortex heating not only is directly proportional with the intensity of alternating current, but also is directly proportional with the frequency of alternating current, and from the intermediate frequency to the high frequency, the thermal efficiency obviously improves.And adopt the thermatron of traditional high frequency electric generation circuit at present, be used in micro-wave oven, the pot-type boiler of also finding to use high frequency electric to utilize the eddy current heating and the record of heating stove more.
Three, summary of the invention:
Technical problem to be solved by this invention: at the prior art deficiency, propose a kind of high-frequency household electric heater, water heater, do not burn, the flames of anger, do not produce pollution, thermal efficiency height, energy saving; Heating element heater does not contact with the water source, does not worry electric leakage, and is safe in utilization, reliable, can be used for substituting traditional domestic, electric water heater, electric heating stove.
The technical solution adopted in the present invention:
A kind of high-frequency household electric heater; contain wall-hanging or the console mode housing; in enclosure interior ferromagnetic metallic material water tank heater is installed; described water tank heater is provided with the water inlet that connects water pipe; hot water outlet and water return outlet; water-control switch is installed on the inlet pipeline; described water-control switch is series at power frequency supply power supply input; be connected and installed with water circulating pump at hot water outlet; safety valve is drawn in upper end at the water tank heater; the heating stove housing is stretched out in the safety valve outlet; the high frequency electric generating means is installed in the heating stove housing; the high frequency electric generating means contains the power circuit of power circuit and eddy current coil; the PWM pulse-width signal produces and control protection electric circuit; cooling fan and drive circuit thereof; power circuit provides power circuit and control circuit and cooling fan working power; eddy current coil is isolated the outer wall periphery that is wrapped in the water tank heater by insulator, and the trigger control end of power circuit connects the pulse-width signal output of generation of PWM pulse-width signal and control protection electric circuit by drive circuit.
Described high-frequency household electric heater, in the water tank heater, temperature sensor is installed, the signal output part of temperature sensor connects temperature control equipment, described temperature control equipment is installed in the heating stove surface of shell, its control signal output be connected in series heating stove power frequency supply or eddy current coil working power.
Described high-frequency household electric heater; the PWM pulse width signal produces and control protection electric circuit contains TL494 and peripheral circuit thereof; power circuit high-voltage rectifying, filtered output connect the end of eddy current coil L, and the other end of eddy current coil L is through power tube BG1 and coupling transformer B
3Primary coil ground connection; eddy current coil L two ends shunt capacitance C; the modulation signal output 9 of TL494; the signal input part of drive circuit TA8136 in the 10 pin access power circuit in parallel; the output of TA8136 connects the control utmost point of power tube BG1; eddy current coil L connects the input in the same way of the end connection amplifier IC4 of power supply; its other end connects the reverse input end of amplifier IC4; in the same way described; be connected to the protection diode between the reverse input end; the output of amplifier IC4 connects the pulse-width signal output of TL494; amplifier IC5 and peripheral circuit thereof constitute the pulse-width control signal input circuit of TL494; power tube holding circuit and cooling fan drive circuit, dc source is through resistance R
4And R
1Ground connection, R
4And R
1Contact through thermistor R, resistance R
2, R
3Ground connection, thermistor R is installed near power component fin position, R
2, R
3Contact insert the reverse input end of amplifier IC5, this contact is simultaneously through capacitor C
4Ground connection, the input in the same way of amplifier IC5 connects 14,15 pin of TL494, and the input in the same way of IC5 is simultaneously through resistance R
7, adjustable resistance R
X, resistance R
8Ground connection, adjustable resistance R
XCentre tap connect pulse-width signal input 1 pin of TL494,2,3 pin of TL494 connect feedback input signal, the output of amplifier IC5 is through resistance R
5, R
6Connect dc source, R
5, R
6Contact insert 16 pin of TL494 with the secondary feedback voltage rectification output end of coupling transformer B3,5 pin of TL494,6 pin connect oscillation resistance RT, oscillating capacitance CT respectively, 8,11,12 pin connect the 18V power supply, 7, the 13 pin ground connection of TL494.
PWM pulse width signal in the high frequency electric generating means produces and control protection electric circuit contains TL494 and peripheral circuit thereof; its temperature control, display circuit adopt Single-chip Controlling; single-chip microprocessor MCU adopts AT89C2051; power circuit adopts two groups of eddy current coils and two triggering control power tubes that difference is corresponding with it; power circuit high-voltage rectifying, filtered output connect the end of eddy current coil L4, L5 respectively; through triggering control power tube BG1, BG2 ground connection, wherein BG2 connects coupling transformer B to the other end of L4, L5 respectively
2Primary coil, coupling transformer B
2The inferior utmost point TL494 feedback protection voltage signal is provided, eddy current coil L4, the L5 two ends are shunt capacitance respectively, two power tubes adopt two groups of TA8136 to promote respectively, wherein 1 pin of TA8136 connects the control utmost point of power tube, eddy current coil L4, the two ends of the L5 phase-locked guard amplifier of two-way that is connected in parallel respectively, the output of phase-locked guard amplifier is connected with the two-way pulse width signal output of TL494 respectively, the two-way pulse width signal output of TL494 connects 7 pin that promote circuit TA8136 simultaneously respectively, temperature control, 8 of display circuit MCU, 9 pin connect the temperature setting signal input, 6 of MCU, 7 pin connect respectively, lower limit temperature setting signal output control transistor BG5, the base stage of BG6, BG5, the colelctor electrode of BG6 connects the output of phase-locked guard amplifier respectively; Be installed in temperature sensor output signal in the water tank heater inserts MCU by amplifying circuit 2 pin, the serial communication interface of MCU connects temperature by expanded circuit 74164 and shows and control circuit, and described temperature shows that charactron and temperature regulation switch are installed in the heating stove surface of shell; Amplifier LM339-3 and peripheral circuit thereof constitute pulse-width control signal input circuit and the power tube holding circuit of TL494, and dc source is through resistance R
4And R
2Ground connection, R
4And R
2Contact through resistance R
3, thermistor RT, resistance R
10Ground connection, thermistor RT is installed near power component fin position, RT, R
10Contact insert the reverse input end of amplifier LM339-3, this contact is simultaneously through capacitor C
12Ground connection, the input in the same way of amplifier LM339-3 connects the cooling fan drive circuit, inserts 14,15 pin of TL494 simultaneously, this in the same way input through resistance R
8, adjustable resistance R
W1, resistance R
11Ground connection, adjustable resistance R
WCentre tap connect pulse-width signal input 1 pin of TL494,2,3 pin of TL494 connect feedback input signal, the output of amplifier LM339-3 is through resistance R
5, R
7Connect dc source, R
5, R
7Contact and the secondary feedback voltage rectification output end of coupling transformer B2 16 pin that insert TL494,5 pin of TL494,6 pin connect oscillation resistance RT, oscillating capacitance CT respectively, 8,11,12 pin connect the 18V power supply, the 7 pin ground connection of TL494, and 13 pin connect+the 5V reference voltage.
A kind of high frequency domestic, electric water heater; contain housing; in enclosure interior the water tank heater that ferromagnetic metallic material is made is installed; described water tank heater is provided with water inlet and the hot water outlet that connects water pipe; temperature sensor also is installed in the water tank heater; the high frequency electric generating means is installed in the heating stove housing; described high frequency electric generating means contains power circuit; and the power circuit that contains eddy current coil; the PWM pulse width signal produces and control protection electric circuit; cooling fan and drive circuit; power circuit provides power circuit and control circuit and cooling fan working power; the power circuit eddy current coil is isolated the outer wall periphery that is wrapped in the water tank heater by insulator; the driving power pipe control end of power circuit is by the pulse width signal output of drive circuit connection PWM pulse width signal generation and control protection electric circuit, and the temperature sensor signal output is connected with corresponding temperature control equipment or circuit.
Described high frequency domestic, electric water heater is equipped with water-control switch on the water tank inlet pipeline, the normally-closed contact of described water-control switch is series at power frequency supply power supply input.
Described high frequency domestic, electric water heater, it is characterized in that: described temperature control equipment adopts the digital display temperature controller, the digital display temperature controller is installed in the heating stove surface of shell, its control signal output be connected in series heating stove power frequency supply or eddy current coil working power.
The PWM pulse width signal produces and control protection electric circuit contains TL494 and peripheral circuit thereof, and power circuit high-voltage rectifying, filtered output connect the end of heater element eddy current coil L, and the other end of eddy current coil L is through power tube BG1 and coupling transformer B
3Primary coil ground connection; eddy current coil L two ends shunt capacitance C; the modulation signal output 9 of TL494; the signal input part of drive circuit TA8136 in the 10 pin access power circuit in parallel; the output of TA8136 connects the control utmost point of power tube BG1; eddy current coil L connects the input in the same way of the end connection amplifier IC4 of power supply; its other end connects the reverse input end of amplifier IC4; the output of amplifier IC4 connects the pulse-width signal output of TL494; amplifier IC5 and peripheral circuit thereof constitute the pulse-width control signal input circuit of TL494; power tube holding circuit and cooling fan drive circuit, dc source is through resistance R
4And R
1Ground connection, R
4And R
1Contact through thermistor R, resistance R
2, R
3Ground connection, thermistor R is installed near power component fin position, R
2, R
3Contact insert the reverse input end of amplifier IC5, this contact is simultaneously through capacitor C
4Ground connection, the input in the same way of amplifier IC5 connects 14,15 pin of TL494, and the input in the same way of IC5 is simultaneously through resistance R
7, adjustable resistance R
X, resistance R
8Ground connection, adjustable resistance R
XCentre tap connect pulse-width signal input 1 pin of TL494,2,3 pin of TL494 connect feedback input signal, the output of amplifier IC5 is through resistance R
5, R
6Connect dc source, R
5, R
6Contact insert 16 pin of TL494 with the secondary feedback voltage rectification output end of coupling transformer B3,5 pin of TL494,6 pin connect oscillation resistance RT, oscillating capacitance CT respectively, 8,11,12 pin connect the 18V power supply, 7, the 13 pin ground connection of TL494.
Described high frequency domestic, electric water heater; PWM pulse width signal in the high frequency electric generating means produces and control protection electric circuit contains TL494 and peripheral circuit thereof; temperature control, display circuit adopt single chip machine controlling circuit; MCU adopts AT89C2051; power circuit adopts two groups of eddy current coils and two triggering control power tubes that difference is corresponding with it; power circuit high-voltage rectifying, filtered output connect the end of eddy current coil L4, L5 respectively; through triggering control power tube BG1, BG2 ground connection, wherein BG2 connects coupling transformer B to the other end of L4, L5 respectively
2Primary coil, coupling transformer B
2The inferior utmost point TL494 feedback protection voltage signal is provided, eddy current coil L4, the L5 two ends are shunt capacitance respectively, two power tubes adopt two groups of TA8136 to promote respectively, wherein 1 pin of TA8136 connects the control utmost point of power tube, eddy current coil L4, the two ends of the L5 phase-locked guard amplifier of two-way that is connected in parallel respectively, the output of phase-locked guard amplifier is connected with the two-way pulse width signal output of TL494 respectively, the two-way pulse width signal output of TL494 connects 7 pin that promote circuit TA8136 simultaneously respectively, temperature control, 8 of display circuit MCU, 9 pin connect the temperature setting signal input, 6 of MCU, 7 pin connect respectively, lower limit temperature setting signal output control transistor BG5, the base stage of BG6, BG5, the colelctor electrode of BG6 connects the output of phase-locked guard amplifier respectively; Be installed in temperature sensor output signal in the water tank heater inserts MCU by amplifying circuit 2 pin, the serial communication interface of MCU connects temperature by expanded circuit 74164 and shows and control circuit, and described temperature shows that charactron and temperature regulation switch are installed in the heating stove surface of shell; Amplifier LM339-3 and peripheral circuit thereof constitute pulse-width control signal input circuit and the power tube holding circuit of TL494, and dc source is through resistance R
4And R
2Ground connection, R
4And R
2Contact through resistance R
3, thermistor RT, resistance R
10Ground connection, thermistor RT is installed near power component fin position, RT, R
10Contact insert the reverse input end of amplifier LM339-3, this contact is simultaneously through capacitor C
12Ground connection, the input in the same way of amplifier LM339-3 connects the cooling fan drive circuit, inserts 14,15 pin of TL494 simultaneously, this in the same way input through resistance R
8, adjustable resistance R
W1, resistance R
11Ground connection, adjustable resistance R
WCentre tap connect pulse-width signal input 1 pin of TL494,2,3 pin of TL494 connect feedback input signal, the output of amplifier LM339-3 is through resistance R
5, R
7Connect dc source, R
5, R
7Contact and the secondary feedback voltage rectification output end of coupling transformer B2 16 pin that insert TL494,5 pin of TL494,6 pin connect oscillation resistance RT, oscillating capacitance CT respectively, 8,11,12 pin connect the 18V power supply, the 7 pin ground connection of TL494, and 13 pin connect+the 5V reference voltage.
Useful good effect of the present invention:
1, high-frequency household electric heater of the present invention, water heater, the power component power supply adopts high frequency pulsewidth generation circuit to provide, inner bag adopts ferromagnetic material stainless steel heater, utilize the tubular eddy current coil to produce the high-frequency vortex heating, the flames of anger, thermal efficiency height is compared traditional electric heater and heating stove, can saves energy 40%--50%, reduce the consumption expenditure of lives such as heating and bathing greatly with hot water; Do not burn during use, do not produce pernicious gas, help environmental protection, have long-term social benefit, have a extensive future.
2, high-frequency household electric heater of the present invention, water heater, heating does not contact with the water source, leaky can not take place, and is safe in utilization, reliable; Need not shift to an earlier date preheating during use, heating rapidly; Be provided with the lack of water power-off protection apparatus, water temperature is regulated and is set and control automatically, and heating stove also is provided with the automatic bleeder of overvoltage, and is easy to use, safety.Be a kind of desirable household electric heater, water heater.
Four, description of drawings:
Fig. 1: family expenses high-frequency electrical heating stove structural representation
Fig. 2: family expenses heatronic water heater structure schematic diagram
Fig. 3: high frequency electric generating means schematic block circuit diagram
Fig. 4: one of high-frequency current generator circuit theory diagrams
Fig. 5: two of high-frequency current generator circuit theory diagrams
Five, the specific embodiment:
Embodiment one: referring to Fig. 1, the present embodiment high-frequency household electric heater, contain housing 1, according to installing and using requirement, housing 1 can be designed to wall-hanging or console mode, in housing 1 inside the water tank heater 4 that ferromagnetic metal material is made is installed, be provided with the water inlet 8 that is connected water pipe with 4 connections of water tank heater, hot water outlet 12 and water return outlet 10, for safety, on the inlet pipeline that connects water inlet 8, water-control switch 9 is installed, water-control switch 9 is series at heating stove power frequency supply power supply input, by setting the operating pressure of water-control switch 9, auto power off when making water tank lacks water.In addition, be connected and installed with water circulating pump 11 at the heating stove hot water outlet, draw safety valve 3 in the upper end of water tank heater 4, safety valve 3 ports of export stretch out the heating stove housing by tube connector 2.The high frequency electric generating means is installed in the high-frequency household electric heater housing 1; described high frequency electric generating means contains power circuit; and the power circuit that contains eddy current coil; the PWM pulse width signal produces and control protection electric circuit; cooling fan and drive circuit thereof; provide power circuit and control circuit and cooling fan working power by power circuit; 15 are depicted as power circuit board among the figure; 14 is control circuit board; communication is connected power circuit with control circuit; draw lead from power circuit board 15 and connect eddy current coil 6; eddy current coil 6 is isolated the outer wall periphery that is wrapped in water tank heater 4 by insulator 5, and the trigger control end of power circuit connects the pulse-width signal output of generation of PWM pulse width signal and control protection electric circuit by drive circuit.Temperature sensor 18 is installed in water tank heater 4, the signal output part of temperature sensor 18 connects temperature control equipment, realize that temperature shows or upper and lower limit control, described temperature control equipment is installed in the heating stove surface of shell, and the heating stove surface of shell also is furnished with power switch, power supply indication, power adjusting potentiometer etc.7 is the support mount pad of water tank heater 1 among the figure, 13 is division board between high frequency electric generating means part and the water tank heater 1 among the figure, 16 is cooling fan among the figure, can adopt fan or axial flow blower etc. to be fixed between heating stove inner shell and the division board, corresponding air flow inlet 19 and the air stream outlet 17 of being provided with on the heating stove housing forms the radiating airflow passage.
Referring to Fig. 4; be present embodiment electric heating stove high frequency electric generating means circuit theory diagrams; 41 is power circuit among the figure; 44 are generation of PWM pulse width signal and control protection electric circuit; 42 is eddy current coil and the triggering control power tube and the phase-locked guard amplifier of power circuit; 43 is drive circuit, 42,43 mutual group success rate circuit.The PWM pulse width signal produces and control protection electric circuit contains TL494 and peripheral circuit thereof, connects eddy current coil L after power circuit high-voltage rectifying, the filtering, and the other end of eddy current coil L is through power tube BG1 and coupling transformer B
3Primary coil ground connection, eddy current coil L two ends shunt capacitance C, modulation signal output 9, the 10 pin parallel connections of TL494 are through resistance R
18, R
19The signal input part of drive circuit TA8136 in the access power circuit, the output of TA8136 connects the control utmost point of power tube BG1, and eddy current coil L connects an end of power supply through resistance R
15Connect the input in the same way of amplifier IC4, its other end is through resistance R
16, R
17The reverse input end that connects amplifier IC4, IC4 in the same way, be connected to protection diode D between the reverse input end
11, the output of amplifier IC4 is through resistance R
18Connect the pulse-width signal output of TL494,3 pin of drive circuit TA8136 are through resistance R
22Connect the control utmost point of BG1,2, be connected to resistance R between 3 pin
23, its 4 pin ground connection, 5,6 pin connect power supply, and 7 pin are simultaneously through resistance R
20Ground connection, amplifier IC5 and peripheral circuit thereof constitute pulse-width control signal input circuit, power tube holding circuit and the cooling fan drive circuit of TL494, and dc source is through resistance R
4And R
1Ground connection, R
4And R
1Contact through thermistor R, resistance R
2, R
3Ground connection, thermistor R is installed near the power component position, R
2, R
3Contact insert the reverse input end of amplifier IC5, this contact is simultaneously through capacitor C
4Ground connection, the input in the same way of amplifier IC5 connects 14,15 pin of TL494, and the input in the same way of IC5 is through resistance R
7, adjustable resistance R
X, resistance R
8Ground connection, adjustable resistance R
XCentre tap connect pulse-width signal input 1 pin of TL494,2,3 pin of TL494 connect feedback input signal, the output of amplifier IC5 is through resistance R
5, R
6Connect dc source, R
5, R
6Contact and the secondary feedback voltage rectification output end of coupling transformer B3 16 pin that insert TL494,5 pin of TL494,6 pin connect oscillation resistance RT, oscillating capacitance CT respectively, 8,11,12 pin connect the 18V power supply, 7, the 13 pin ground connection of TL494.
Embodiment two: referring to Fig. 1, the present embodiment high-frequency household electric heater, identical with embodiment one on space structure, perhaps the water tank structure adopts lateral arrangement, be that heating stove can be vertical or horizontal type structure, its difference with embodiment one is that high frequency electric generation circuit is different, and temperature control, display circuit adopt single chip machine controlling circuit.Fig. 3 is a present embodiment heating stove high frequency electric generation circuit block diagram, and Fig. 5 is its circuit theory diagrams.The PWM pulse width signal produces and control protection electric circuit still adopts TL494 and peripheral circuit thereof, and MCU adopts AT89C2051, and power circuit contains power compensating circuit, and power component adopts two groups of eddy current coils and two triggering control power tubes that difference is corresponding with it.
Power circuit high-voltage rectifying, filtered output connect the end of eddy current coil L4, L5 respectively, and through triggering control power tube BG1, BG2 ground connection, wherein BG2 connects coupling transformer B to the other end of L4, L5 respectively
2Primary coil, coupling transformer B
2The inferior utmost point TL494 feedback protection voltage signal is provided; eddy current coil L4; the L5 two ends are shunt capacitance respectively; two power tubes adopt two groups of TA8136 to promote respectively; wherein 1 pin of TA8136 connects the control utmost point of power tube; eddy current coil L4; the two ends of the L5 phase-locked guard amplifier of two-way that is connected in parallel respectively; the output of phase-locked guard amplifier is connected with the two-way pulse width signal output of TL494 respectively; the two-way pulse width signal output of TL494 connects 7 pin that promote circuit TA8136 simultaneously respectively; temperature control; 8 of display circuit MCU; 9 pin connect the temperature setting signal input; 6 of MCU; 7 pin connect respectively; lower limit temperature setting signal output control transistor BG5; the base stage of BG6; BG5; the colelctor electrode of BG6 connects the output of phase-locked guard amplifier respectively; amplifier LM339-3 and peripheral circuit thereof constitute pulse-width control signal input circuit and the power tube holding circuit of TL494, and dc source is through resistance R
4And R
2Ground connection, R
4And R
2Contact through resistance R
3, thermistor RT, resistance R
10Ground connection, thermistor RT is installed near power component fin position, RT, R
10Contact insert the reverse input end of amplifier LM339-3, this contact is simultaneously through capacitor C
12Ground connection, the input in the same way of amplifier LM339-3 connects the cooling fan drive circuit, inserts 14,15 pin of TL494 simultaneously, this in the same way input through resistance R
8, adjustable resistance R
W1, resistance R
11Ground connection, adjustable resistance R
WCentre tap connect pulse-width signal input 1 pin of TL494,2,3 pin of TL494 connect feedback input signal, the output of amplifier LM339-3 is through resistance R
5, R
7Connect dc source, R
5, R
7Contact and the secondary feedback voltage rectification output end of coupling transformer B2 16 pin that insert TL494,5 pin of TL494,6 pin connect oscillation resistance RT, oscillating capacitance CT respectively, 8,11,12 pin connect the 18V power supply, 7, the 13 pin ground connection of TL494; Be installed in temperature sensor output signal in the water tank heater inserts MCU by amplifying circuit 2 pin, the serial communication interface of MCU connects temperature by expanded circuit 74164 and shows and control circuit, and described temperature shows that charactron and temperature regulation switch are installed in the heating stove surface of shell.
Embodiment three: referring to Fig. 1, present embodiment is basic identical with embodiment one, and difference is: heating stove itself is not established temperature detection and corresponding demonstration, control device, only controls heating stove heat outputting coolant-temperature gage by power adjusting.
Embodiment four: referring to Fig. 2; Fig. 4; present embodiment high frequency domestic, electric water heater; contain housing 22; in housing 22 inside the water tank heater 24 that ferromagnetic metallic material is made is installed; described water tank heater 24 is provided with water inlet 28 and the hot water outlet 30 that connects water pipe; temperature sensor 23 also is installed in water tank heater 24; in heating stove housing 22, be installed with the high frequency electric generating means by division board 32; described high frequency electric generating means contains power circuit; and the power circuit that contains eddy current coil 26; the PWM pulse width signal produces and control protection electric circuit; cooling fan 34 and drive circuit thereof, power circuit provide power circuit and control circuit and cooling fan working power.Wherein cooling fan can adopt fan or axial flow blower etc. to be fixed between water heater inner shell and the division board 32, and corresponding air flow inlet 36 and the air stream outlet 35 of being provided with on the water heater housing forms the radiating airflow passage.27 is the support mount pad of water tank heater 24 among the figure.31 communications are connected power circuit board 33 with control circuit board; power circuit board 33 extracting power supply cords connect eddy current coil 26; eddy current coil 26 is isolated the outer wall periphery that is wrapped in water tank heater 22 by insulator 25; the driving power pipe control end of power circuit connects the pulse width signal output of generation of PWM pulse width signal and control protection electric circuit by drive circuit; the temperature sensor signal output is connected with corresponding temperature control equipment; described temperature control equipment adopts the digital display temperature controller; the digital display temperature controller is installed in the water heater surface of shell, its control signal output be connected in series water heater power frequency supply or eddy current coil working power.Its high frequency electric generation device circuit theory diagrams are referring to Fig. 4, and its annexation is described in detail in embodiment one, does not repeat them here.
Embodiment five: referring to Fig. 2, and present embodiment high frequency domestic, electric water heater, basic identical with embodiment four on space structure, water inlet 28 and hot water outlet 30 can enter or draw from the water tank different lateral; Water tank structure or employing lateral arrangement.Its difference with embodiment four is that high frequency electric generation circuit is different, and temperature control, display circuit adopt single chip machine controlling circuit.Its high frequency electric generation device schematic block circuit diagram is referring to Fig. 3, and circuit theory diagrams are referring to Fig. 5, and its annexation is described in detail in embodiment two, does not repeat them here.
Embodiment six: referring to Fig. 2, Fig. 4, present embodiment high frequency domestic, electric water heater, its product structure and high frequency electric generation circuit are substantially with embodiment four, difference is: on water tank water inlet 28 pipelines water-control switch 29 is installed, the normally-closed contact of described water-control switch is series at power frequency supply power supply input, realize the anhydrous or water yield cut off the power supply more after a little while or forbid the energising, with plan safety.
Embodiment seven: referring to Fig. 2, Fig. 3, Fig. 5, present embodiment high frequency domestic, electric water heater, its product structure and high frequency electric generation circuit are substantially with embodiment five, difference is: on water tank water inlet 28 pipelines water-control switch 29 is installed, the normally-closed contact of described water-control switch is series at power frequency supply power supply input, realize the anhydrous or water yield cut off the power supply more after a little while or forbid the energising, with plan safety.
Claims (9)
1; a kind of high-frequency household electric heater; contain wall-hanging or the console mode housing; in enclosure interior the water tank heater that ferromagnetic metallic material is made is installed; described water tank heater is provided with the water inlet that connects water pipe; hot water outlet and water return outlet; water-control switch is installed on the inlet pipeline; described water-control switch is series at power frequency supply power supply input; be connected and installed with water circulating pump at hot water outlet; safety valve is drawn in upper end at the water tank heater; the heating stove housing is stretched out in the safety valve outlet; it is characterized in that: the high frequency electric generating means is installed in the heating stove housing; described high frequency electric generating means contains the power circuit of power circuit and eddy current coil; the PWM pulse-width signal produces and control protection electric circuit; cooling fan and drive circuit thereof; power circuit provides power circuit; control circuit and cooling fan working power; eddy current coil is isolated the outer wall periphery that is wrapped in the water tank heater by insulator, and the trigger control end of power circuit connects the pulse-width signal output of generation of PWM pulse-width signal and control protection electric circuit by drive circuit.
2, high-frequency household electric heater according to claim 1, it is characterized in that: in the water tank heater, temperature sensor is installed, the signal output part of temperature sensor connects temperature control equipment, described temperature control equipment is installed in the heating stove surface of shell, its control relay output be connected in series heating stove power frequency supply or eddy current coil working power.
3, high-frequency household electric heater according to claim 1 and 2; it is characterized in that: the PWM pulse width signal produces and control protection electric circuit contains TL494 and peripheral circuit thereof; power circuit high-voltage rectifying, filtered output connect the end of heater element eddy current coil L, and the other end of eddy current coil L is through power tube BG1 and coupling transformer B
3Primary coil ground connection; eddy current coil L two ends shunt capacitance C; the modulation signal output 9 of TL494; the signal input part of drive circuit TA8136 in the 10 pin access power circuit in parallel; the output of TA8136 connects the control utmost point of power tube BG1; eddy current coil L inserts at two ends input in the same way and the reverse input end of phase-locked guard amplifier IC4 respectively; the output of amplifier IC4 connects the pulse-width signal output of TL494, and amplifier IC5 and peripheral circuit thereof constitute the pulse-width control signal input circuit of TL494; power tube holding circuit and cooling fan drive circuit.
4; high-frequency household electric heater according to claim 1; it is characterized in that: described high frequency electric generating means; the PWM pulse width signal produces and control protection electric circuit contains TL494 and peripheral circuit thereof; temperature control; display circuit adopts single chip machine controlling circuit; MCU adopts AT89C2051; power circuit adopts two groups of eddy current coils and two triggering control power tubes that difference is corresponding with it; the power circuit high-voltage rectifying; filtered output connects eddy current coil L4 respectively; the end of L5; L4; the other end of L5 is respectively through triggering control power tube BG1; BG2 ground connection, wherein BG2 connects coupling transformer B
2Primary coil, coupling transformer B
2Secondary coil TL494 feedback protection voltage signal is provided; eddy current coil L4; the L5 two ends are shunt capacitance respectively; two power tube BG1; BG2 adopts two groups of TA8136 to promote respectively; wherein 7 pin of each TA8136 connect the two-way pulse width signal output of TL494 respectively; 1 pin of TA8136 connects the control utmost point of power tube; eddy current coil L4; the two ends of the L5 phase-locked guard amplifier of two-way that is connected in parallel respectively; the output of phase-locked guard amplifier connects the two-way pulse width signal output of TL494 respectively; temperature control; in the display circuit 8 of MCU AT89C2051; 9 pin connect the temperature setting signal input; 6 of MCU; 7 pin connect respectively; lower limit temperature setting signal output control transistor BG5; the base stage of BG6; BG5; the colelctor electrode of BG6 connects the output of phase-locked guard amplifier respectively; be installed in temperature sensor output signal in the water tank heater inserts MCU by amplifying circuit 2 pin; the serial communication interface of MCU connects temperature by expanded circuit 74164 and shows and control circuit; described temperature shows that charactron and temperature regulation switch are installed in the heating stove surface of shell, and amplifier LM339-3 and peripheral circuit thereof constitute pulse-width control signal input circuit and the power tube holding circuit of TL494.
5; a kind of high frequency domestic, electric water heater; contain housing; in enclosure interior the water tank heater that ferromagnetic metallic material is made is installed; described water tank heater is provided with water inlet and the hot water outlet that connects water pipe; temperature sensor also is installed in the water tank heater; it is characterized in that: the high frequency electric generating means is installed in the heating stove housing; described high frequency electric generating means contains the power circuit of power circuit and eddy current coil; the PWM pulse-width signal produces and control protection electric circuit; cooling fan and drive circuit thereof; power circuit provides power circuit and control circuit and cooling fan working power; eddy current coil is isolated the outer wall periphery that is wrapped in the water tank heater by insulator; the driving power pipe control end of power circuit is by the pulse width signal output of drive circuit connection PWM pulse width signal generation and control protection electric circuit, and the temperature sensor signal output is connected with corresponding temperature control equipment or circuit.
6, high frequency domestic, electric water heater according to claim 5 is characterized in that: on the water tank inlet pipeline water-control switch is installed, the normally-closed contact of described water-control switch is series at power frequency supply power supply input.
7, according to claim 5 or 6 described high frequency domestic, electric water heater, it is characterized in that: described temperature control equipment adopts the digital display temperature controller, the digital display temperature controller is installed in the water heater surface of shell, its control signal output be connected in series water heater power frequency supply or eddy current coil working power.
8, according to claim 5 or 6 described high frequency domestic, electric water heater; it is characterized in that: the PWM pulse width signal produces and control protection electric circuit contains TL494 and peripheral circuit thereof; power circuit high-voltage rectifying, filtered output connect the end of eddy current coil L, and the other end of eddy current coil L is through power tube BG1 and coupling transformer B
3Primary coil ground connection; eddy current coil L two ends shunt capacitance C; the modulation signal output 9 of TL494; the signal input part of drive circuit TA8136 in the 10 pin access power circuit in parallel; the output of TA8136 connects the control utmost point of power tube BG1; eddy current coil L two ends connect respectively lock-in amplifier IC4 in the same way with the direction input; it in the same way; be connected to the protection diode between the reverse input end; the output of lock-in amplifier IC4 connects the pulse-width signal output of TL494, and amplifier IC5 and peripheral circuit thereof constitute the pulse-width control signal input circuit of TL494; power tube holding circuit and cooling fan drive circuit.
9; according to claim 5 or 6 described high frequency domestic, electric water heater; it is characterized in that: described high frequency electric generating means; the PWM pulse width signal produces and control protection electric circuit contains TL494 and peripheral circuit thereof; temperature control; display circuit adopts single chip machine controlling circuit; MCU adopts AT89C2051; power circuit adopts two groups of eddy current coils and two triggering control power tubes that difference is corresponding with it; the power circuit high-voltage rectifying; filtered output connects eddy current coil L4 respectively; the end of L5; L4; the other end of L5 is respectively through triggering control power tube BG1; BG2 ground connection, wherein BG2 connects coupling transformer B
2Primary coil, coupling transformer B
2The inferior utmost point TL494 feedback protection voltage signal is provided; eddy current coil L4; the L5 two ends are shunt capacitance respectively; two power tube BG1; BG2 adopts two groups of TA8136 to promote respectively; wherein 7 pin of TA8136 connect the two-way pulse width signal output of TL494 respectively; 1 pin of TA8136 connects the control utmost point of power tube; eddy current coil L4; the two ends of the L5 phase-locked guard amplifier of two-way that is connected in parallel respectively; the output of phase-locked guard amplifier connects the two-way pulse width signal output of TL494 respectively; temperature control; in the display circuit 8 of MCUAT89C2051; 9 pin connect the temperature setting signal input; 6 of MCU; 7 pin connect respectively; lower limit temperature setting signal output control transistor BG5; the base stage of BG6; BG5; the colelctor electrode of BG6 connects the output of phase-locked guard amplifier respectively; be installed in temperature sensor output signal in the water tank heater inserts MCU by amplifying circuit 2 pin; the serial communication interface of MCU connects temperature by expanded circuit 74164 and shows and control circuit; described temperature shows that charactron and temperature regulation switch are installed in the heating stove surface of shell, and amplifier LM339-3 and peripheral circuit thereof constitute pulse-width control signal input circuit and the power tube holding circuit of TL494.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2006101072233A CN100451457C (en) | 2006-09-28 | 2006-09-28 | High-frequency household electric heater and water heater |
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2006101072233A CN100451457C (en) | 2006-09-28 | 2006-09-28 | High-frequency household electric heater and water heater |
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| Publication Number | Publication Date |
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| CN101029749A CN101029749A (en) | 2007-09-05 |
| CN100451457C true CN100451457C (en) | 2009-01-14 |
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| CNB2006101072233A Active CN100451457C (en) | 2006-09-28 | 2006-09-28 | High-frequency household electric heater and water heater |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103047750B (en) * | 2013-01-23 | 2015-07-01 | 厦门大学 | Instant high-frequency vortexing type electric water heater |
| CN105274819A (en) * | 2015-11-30 | 2016-01-27 | 成都聚汇才科技有限公司 | Dryer temperature control system based on single-phase rectification and voltage stabilization circuit |
| CN106903979B (en) * | 2017-03-13 | 2023-02-03 | 成都信息工程大学 | Plane transfer printing device |
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| WO1992012389A1 (en) * | 1990-12-27 | 1992-07-23 | Thevenon Andre | Device for producing hot water for domestic use or heating |
| WO2004044499A1 (en) * | 2002-11-13 | 2004-05-27 | Cadif Srl | Water heater with an external electric winding |
| CN2647006Y (en) * | 2003-08-20 | 2004-10-06 | 沈明水 | High-frequency electromagnetic heating apparatus |
| CN2656877Y (en) * | 2003-11-15 | 2004-11-17 | 蒋明清 | Electromagnetic inductive instant heating electric water heater |
| CN2888339Y (en) * | 2006-09-28 | 2007-04-11 | 董道法 | High-frequency household electric heating stove, water heater |
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|---|---|---|---|---|
| WO1992012389A1 (en) * | 1990-12-27 | 1992-07-23 | Thevenon Andre | Device for producing hot water for domestic use or heating |
| WO2004044499A1 (en) * | 2002-11-13 | 2004-05-27 | Cadif Srl | Water heater with an external electric winding |
| CN2647006Y (en) * | 2003-08-20 | 2004-10-06 | 沈明水 | High-frequency electromagnetic heating apparatus |
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| CN2888339Y (en) * | 2006-09-28 | 2007-04-11 | 董道法 | High-frequency household electric heating stove, water heater |
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