CN105485927A - Remote adjusting device of hot water temperature of gas water heater - Google Patents
Remote adjusting device of hot water temperature of gas water heater Download PDFInfo
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- CN105485927A CN105485927A CN201610000437.4A CN201610000437A CN105485927A CN 105485927 A CN105485927 A CN 105485927A CN 201610000437 A CN201610000437 A CN 201610000437A CN 105485927 A CN105485927 A CN 105485927A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/20—Arrangement or mounting of control or safety devices
- F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
- F24H9/2035—Arrangement or mounting of control or safety devices for water heaters using fluid fuel
Abstract
The invention discloses a remote adjusting device of hot water temperature of a gas water heater; and the remote adjusting device consists of a first flow measuring unit, a second flow measuring unit, an adder circuit unit, a scale value calculating unit, a flow threshold switch unit and a proportional valve driving unit. The gas water heater includes a first hot water outlet and a second hot water outlet; the hot water temperature is changed by using a method of remotely controlling two ways of hot water flows through a water valve; when the hot water flow of the first hot water outlet is relatively increased, the combustion power of the gas water heater is increased, and the hot water temperature rises; and when the hot water flow of the first hot water outlet is relatively decreased, the combustion power of the gas water heater is reduced, and the hot water temperature is lowered. The device needs no wire or wireless remote controller, can realize remote adjustment of hot water temperature of the gas water heater, and is stable and reliable in control result.
Description
Technical field
The present invention relates to a kind of gas heater, especially a kind of gas heater hot water temperature long range regulation apparatus.
Background technology
If the setting of gas heater temperature is improper, can bring very big inconvenience to people, particularly when shower, the gas and hot water actuator temperature not with wireless remote control or remote line traffic control cannot regulate, and adds cold water easily cause again gas heater to stop working with mixed water valve.Adopt wireless remote control regulating gas water heater temperature, by the restriction of installation site, a lot of occasion remote controller signal cannot be sent to gas heater.When adopting remote line traffic control mode, special waterproof wire remote control devices cost is high, needs to sunken cord in advance, works for a long time under the wet environments such as bathroom, and the wire remote control devices fault rate of electronic type is high.
Summary of the invention
The hot water temperature that the object of the invention is for far distance controlled gas heater provides a solution, namely can the device of regulating gas water heater temperature at a distance.
To achieve these goals, the invention provides a kind of gas heater hot water temperature long range regulation apparatus, be made up of first flow measuring unit, second phasor measurement unit, adder circuit unit, ratio value computing unit, flow threshold switch element and proportioning valve driver element.
Described gas heater has cold water inlet and the first hot water outlet, the second hot water outlet; Before described first hot water outlet, first flow sensor is installed, for detecting outlet hot water's flow of the first hot water outlet; Before described second hot water outlet, second quantity sensor is installed, for detecting outlet hot water's flow of the second hot water outlet.
Outlet hot water's flow of the first hot water outlet that first flow sensor detects by described first flow measuring unit converts first flow voltage to and exports; Outlet hot water's flow of the second hot water outlet that second quantity sensor detects by described second phasor measurement unit converts the second flow rate voltage to and exports.
Described adder circuit unit asks for first flow voltage and the second flow rate voltage sum, exports total flow voltage.
Described ratio value computing unit calculates according to the ratio calculation between first flow voltage and total flow voltage and export ratio value control voltage.
Described flow threshold switch element by flow threshold initialization circuit, compare drive circuit, relay burnt gas switch forms; Described flow threshold initialization circuit output flow threshold voltage; The function of described flow threshold switch element is: when total flow voltage is greater than flow threshold voltage, and entrance cold water total flow is greater than flow threshold, and relay burnt gas switch closes; When total flow voltage is less than flow threshold voltage, entrance cold water total flow is less than flow threshold, and relay burnt gas switch disconnects.
Described proportioning valve driver element is made up of gas proportion regulating valve and proportioning valve drive circuit; The function of described proportioning valve drive circuit is: when ratio value control voltage increases, and the aperture that proportioning valve drive circuit controls gas proportion regulating valve increases; When ratio value control voltage reduces, the aperture that proportioning valve drive circuit controls gas proportion regulating valve reduces.
Be proportional relationship between described first flow voltage and outlet hot water's flow of the first hot water outlet; Be proportional relationship between described second flow rate voltage and outlet hot water's flow of the second hot water outlet.
Ratio value between described second flow rate voltage and outlet hot water's flow of the second hot water outlet equals the ratio value between outlet hot water's flow of first flow voltage and the first hot water outlet.
Described flow threshold is determined by flow threshold voltage; Be proportional relationship between described flow threshold voltage and flow threshold; Ratio value between described flow threshold voltage and flow threshold equals the ratio value between outlet hot water's flow of first flow voltage and the first hot water outlet.
Described ratio value computing unit calculates according to the ratio calculation between first flow voltage and total flow voltage and export ratio value control voltage, is proportional relationship between described ratio value control voltage and described ratio.
Outlet hot water's flow of described first hot water outlet, the second hot water outlet regulates change by mixing water valve; 2 water inlets of described mixed water valve are connected to the first hot water outlet, second hot water outlet of gas heater respectively by water pipe.Or described first hot water outlet, the second hot water outlet outlet hot water's flow respectively by the first control valve, second control valve regulate change; The water inlet of described first control valve is connected to the first hot water outlet of gas heater through water pipe, the water inlet of the second control valve is connected to the second hot water outlet of gas heater through water pipe; It is a water side that the delivery port of described first control valve, the second control valve is communicated with.
The control system of described gas heater is made up of described device, controller, ignition discharge pin, flame inductive needle, ventilating fan, magnetic valve; Gas proportion regulating valve in described device to be arranged in fuel gas pipeline after magnetic valve.Or the control system of described gas heater is made up of temperature controller, ignition discharge pin, flame inductive needle, ventilating fan, magnetic valve, gas proportion regulating valve, first flow sensor, second quantity sensor; Control circuit in described device is included in temperature controller; Control circuit in described device includes the related circuit in first flow measuring unit, second phasor measurement unit, adder circuit unit, ratio value computing unit, flow threshold switch element and proportioning valve driver element.
Described magnetic valve preferably uses the safety shutoff valve in gas proportion valve assembly; Described gas proportion regulating valve uses the gas proportion regulating valve in gas proportion valve assembly.
The invention has the beneficial effects as follows, without the need to wired or Digiplex, adopt the method change gas flow being controlled two-way hot water flow by water valve, thus change outlet hot water's temperature of water heater, realize the remote adjustment of gas heater hot water temperature, control result reliable and stable.
Accompanying drawing explanation
Fig. 1 is gas heater hot water temperature long range regulation apparatus theory diagram.
Fig. 2 is that embodiment 1 structured flowchart installed by flow sensor.
Fig. 3 is that embodiment 2 structured flowchart installed by flow sensor.
Fig. 4 is the embodiment of first flow measuring unit 100.
Fig. 5 is the embodiment of adder circuit unit 300.
Fig. 6 is the embodiment of ratio value computing unit 400.
Fig. 7 is the embodiment of flow threshold switch element 500.
Fig. 8 is the embodiment of proportioning valve drive circuit in proportioning valve driver element 600.
Fig. 9 is gas heater classical control system block diagram.
Figure 10 is the gas water heater control system block diagram of band temperature remote adjustment function.
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing, the present invention is described in further detail, but embodiments of the present invention are not limited thereto.
Gas heater hot water temperature long range regulation apparatus theory diagram as shown in Figure 1, is made up of first flow measuring unit 100, second phasor measurement unit 200, adder circuit unit 300, ratio value computing unit 400, flow threshold switch element 500 and proportioning valve driver element 600.
Described gas heater has 1 cold water inlet and 2 hot water outlets, is separately installed with flow sensor at 2 hot water outlets, detects outlet hot water's flow of 2 hot water outlets respectively.First flow measuring unit 100 is provided with first flow voltage U 1 output, second phasor measurement unit 200 is provided with the second flow voltage U 2 output, first flow measuring unit 100, second phasor measurement unit 200 measure outlet hot water's flow Q1, Q2 of 2 hot water outlets respectively, and export with first flow voltage U 1, second flow voltage U 2 respectively.U1, U2 are sent to adder circuit unit 300, ask for the total flow voltage U 0 corresponding with entrance cold water total flow Q0; Entrance cold water total flow Q0 equals outlet hot water's flow Q1, Q2 sum of 2 hot water outlets.Total flow voltage U 0 is sent to flow threshold switch element 500 and compares with the flow threshold voltage of setting, and when entrance cold water total flow Q0 is greater than the flow threshold of setting, control relay burnt gas switch closes; When entrance cold water total flow Q0 is less than the flow threshold of setting, control relay burnt gas switch disconnects.
First flow voltage U 1, total flow voltage U 0 are sent to ratio value computing unit 400, and ratio value computing unit 400 calculates the ratio between first flow voltage U 1 and total flow voltage U 0, obtain ratio value control voltage UK by this ratio; Ratio value control voltage UK is sent to proportioning valve driver element 600, is controlled the aperture of gas proportion regulating valve by UK size; When UK is minimum of a value, the aperture of gas proportion regulating valve is minimum; When UK is maximum, the aperture of gas proportion regulating valve is maximum.
Flow sensor installs embodiment 1 structured flowchart as shown in Figure 2, described device water circuit system is by the heat exchanger 901 in described gas heater, first flow sensor 902, second quantity sensor 903, first hot water outlet 904, second hot water outlet 905, cold water inlet 906, cold water pipe 921, main hot-water line 922, first hot-water line 923, second hot-water line 924, and mixed water valve 931, first connecting water pipe 925, second connecting water pipe 926 outside gas heater, heat of mixing water pipe 927, Water outlet spray head 932 form.
Described gas heater has 1 cold water inlet and 2 hot water outlets, and cold water pipe 921 is connected between cold water inlet 906 and heat exchanger 901; One end of first hot-water line 923 is connected to the first hot water outlet 904, and one end is communicated to main hot-water line 922 water side in addition; One end of second hot-water line 924 is connected to the second hot water outlet 905, and one end is communicated to main hot-water line 922 water side in addition; The water intake end of main hot-water line 922 is connected to heat exchanger 901.
Before described first flow sensor 902 is arranged on the first hot water outlet 904, for detecting outlet hot water's flow Q1 of the first hot water outlet 904; Before described second quantity sensor 903 is arranged on the second hot water outlet 905, for detecting outlet hot water's flow Q2 of the second hot water outlet 905.Specifically, first flow sensor 902 is arranged on the first hot-water line 923, and second quantity sensor 903 is arranged on the second hot-water line 924.
2 water inlets of mixed water valve 931 are connected to the first hot water outlet 904, second hot water outlet 905 of gas heater respectively by the first connecting water pipe 925, second connecting water pipe 926; The delivery port of mixed water valve 931 is connected to Water outlet spray head 932 by heat of mixing water pipe 927.When mixed water valve 931 is cold water, hot water mixes water valve, the first connecting water pipe 925 is connected to the water inlet of hot water of mixed water valve 931, and the second connecting water pipe 926 is connected to the cold water inlet of mixed water valve 931.Outlet hot water's flow Q1, Q2 of first hot water outlet 904, second hot water outlet 905 are changed by regulating mixed water valve 931.
Flow sensor installs embodiment 2 structured flowchart as shown in Figure 3, is with the difference of embodiment 1, uses the first control valve 933, second control valve 934 to replace mixed water valve 931; The water inlet of the first control valve 933 is connected to the first hot water outlet 904, second control valve 934 of gas heater water inlet through the first connecting water pipe 925 is connected to the second hot water outlet 905 of gas heater through the second connecting water pipe 926.It is that a water side is connected with heat of mixing water pipe 927 that the delivery port of the first control valve 933, second control valve 934 is communicated with.Outlet hot water's flow Q1, Q2 of first hot water outlet 904, second hot water outlet 905 change respectively by adjustment first control valve 933, second control valve 934.
The embodiment of first flow measuring unit 100 as shown in Figure 4.The Hall water flow sensor of low cost selected by first flow sensor 902, and sensor exports as the pulse frequency proportional with flow.First flow measuring unit 100 is made up of first flow sensor 902 and frequency-voltage conversion circuit.In embodiment illustrated in fig. 4, frequency-voltage conversion circuit is made up of single-chip integration frequency/voltage converter 101 and its peripheral cell resistance 102, resistance 104, resistance 106, electric capacity 103, electric capacity 105, the model of single-chip integration frequency/voltage converter 101 is LM2917, and first flow voltage U 1 exports from LM2917.Frequency-voltage conversion circuit can also adopt other can realize the circuit of frequency/voltage translation function.
Second phasor measurement unit 200 is made up of second quantity sensor 903 and frequency-voltage conversion circuit, second quantity sensor 903 selects the Hall water flow sensor of low cost, the Principles and methods of its frequency-voltage conversion circuit is identical with the frequency-voltage conversion circuit in first flow measuring unit 100, and output is the second flow voltage U 2.
First flow measuring unit 100, second phasor measurement unit 200 can also adopt other measurement scheme, and such as, adopt the flow transmitter of integration to measure Q1, Q2 respectively, the flow transmitter of integration directly exports U1, U2.
First flow measuring unit 100 detects Q1, and exporting is proportional relationship between U1, U1 and Q1
；
Second phasor measurement unit 200 detects Q2, and exporting is proportional relationship between U2, U2 and Q2
；
KQ above in 2 expression formulas is flow measurement coefficient.First flow measuring unit 100 is identical with the flow measurement coefficient of second phasor measurement unit 200.
Adder circuit unit 300 inputs first flow voltage U 1, second flow voltage U 2, and exporting total flow voltage U 0, U0 is U1, U2 sum.Adder circuit unit 300 can adopt any voltage adder circuit, and one of them embodiment as shown in Figure 5.Adder circuit unit 300 shown in Fig. 5 is the in-phase adder be made up of amplifier 301, resistance 302, resistance 303, resistance 304, resistance 305.Because first flow measuring unit 100 is identical with the flow measurement coefficient of second phasor measurement unit 200, the ratio between total flow voltage U 0 and the outlet hot water total flow Q0 of 2 hot water outlets is also identical, is namely all flow measurement coefficient.The outlet hot water total flow Q0 of 2 hot water outlets is entrance cold water total flow Q0.
Ratio value computing unit 400 is input as first flow voltage U 1, total flow voltage U 0, export as ratio value control voltage UK, embodiment as shown in Figure 6, is made up of parallel A/D converter 401, parallel D/A converter 402,555 time base apparatus part 411, resistance 412, resistance 413, electric capacity 414.
The model of parallel A/D converter 401 is 8 parallel-by-bit A/D converter ADC0841.555 time base apparatus parts 411, resistance 412, resistance 413, electric capacity 414 form oscillator, the recurrent pulse that oscillator exports is connected to the startup conversion inputs WR of parallel A/D converter 401, the A/D conversion of each pulse enable, makes parallel A/D converter 401 be operated in Automatic continuous translative mode.
Analog voltage input negative terminal VIN-, output enable end RD, sheet choosing end CS, digitally DGND, the in analog AGND of ADC0841 are connected to publicly, and the power end VCC of ADC0841 is connected to positive supply+VDD.During the output enable end RD input low level of ADC0841, its data output end DB7 ~ DB0 maintains and exports effectively.When after ADC0841 each time EOC, automatically result is exported from data output end DB7 ~ DB0.
U1 is connected to the analog voltage input VIN+ of ADC0841, and U0 is connected to the reference voltage input terminal VREF of ADC0841.If 8 position digital signals that ADC0841 output DB7 ~ DB0 exports are X, its maximum is 255.Then have
；
Namely the ratio between two input voltages U1, U0 is
。
The model of parallel D/A converter 402 is 8 parallel-by-bit D/A converter AD5330.The parallel data input of AD5330 is DB7 ~ DB0, and reference voltage input is VREF, and changing voltage output is VOUT.
Buffer switch control end BUF, the export ratio control end GAIN of AD5330, input register control end WR, DAC register control end LDAC, sheet choosing end CS, hold GND to be connected to publicly, clear terminal CLR, low power consumption control end PD, the power end VDD of AD5330 are connected to positive supply+VDD.When the input register control end WR of AD5330 and DAC register control end LDAC input low level, be in direct D/A transition status, when not considering transfer lag, changing voltage output VOUT reflects the data transformation result of parallel data input DB7 ~ DB0 in real time.
The parallel data input DB7 ~ DB0 of AD5330 is connected to the parallel data output DB7 ~ DB0 of ADC0841, and the data of input are X, and its maximum is 255.If the voltage inputing to AD5330 reference voltage input VREF is UM, the voltage that changing voltage output VOUT exports is UK, then have
；
Consider the input/output relation of AD0841, ratio value computing unit 400 is according to formula
，
According to the ratio between first flow voltage U 1 and total flow voltage U 0, calculate ratio value control voltage UK.UM is the maximum of ratio value control voltage UK, and in embodiment illustrated in fig. 6, UM is connected to positive supply+VDD.UM also can adopt other magnitudes of voltage to carry out the maximum of control ratio value control voltage UK.
It is embodiment illustrated in fig. 6 that to be applicable to comparative example value computational speed less demanding, and the occasion that input voltage change is milder.Due to U1, U0 reflection in the present invention is water heater flow, and change is mild, therefore is suitable for.Ratio value computing unit 400 can also adopt other analog dividers, analog multiplier circuit, such as, uses analog divider, the analog multiplier circuit of the integrated analog multipliers such as AD734, AD534/divider composition.
Flow threshold switch element 500 inputs total flow voltage U 0, exports the switching signal relevant to flow threshold QY.The embodiment of flow threshold switch element 500 as shown in Figure 7, be made up of comparator 501, resistance 502, resistance 503, resistance 504, triode 505, fly-wheel diode 506, relay coil 507, relay burnt gas switch 508, the switching signal relevant to flow threshold QY is the closed of relay burnt gas switch 508 and disconnection.
The bleeder circuit of resistance 502, resistance 503 composition is flow threshold QY initialization circuit, for setting flow threshold voltage U Y; Change the intrinsic standoff ratio of resistance 502, resistance 503, the flow threshold QY of setting can be changed.The relation of flow threshold voltage U Y and flow threshold QY is
。
Comparator 501, resistance 504, triode 505, fly-wheel diode 506, relay coil 507 form the comparison drive circuit of relay burnt gas switch 508.
When entrance cold water total flow Q0 is greater than flow threshold QY, total flow voltage U 0 is greater than flow threshold voltage U Y, and comparator 501 exports high level, triode 505 conducting, and relay coil 507 obtains electric, and relay burnt gas switch 508 closes; When entrance cold water total flow Q0 is less than flow threshold QY, relay burnt gas switch 508 disconnects.
Proportioning valve driver element 600 is made up of gas proportion regulating valve and proportioning valve drive circuit, and the embodiment of proportioning valve drive circuit as shown in Figure 8, is made up of power amplifier 601, resistance 602, resistance 603, fly-wheel diode 604.Fly-wheel diode 604 is connected in parallel on ratio coil 630.Its operation principle is: the flow that can be changed combustion gas by the aperture changing gas proportion regulating valve, thus the combustion power changing gas heater, change hot water temperature.Specifically have: when ratio value control voltage UK increases, proportioning valve drive circuit output voltage UB increases, and on ratio coil 630, electric current increases, and the aperture of gas proportion regulating valve increases, and the combustion power of gas heater increases, and hot water temperature rises; When ratio value control voltage UK reduces, proportioning valve drive circuit output voltage UB reduces, and on ratio coil 630, electric current reduces, and the aperture of gas proportion regulating valve reduces, and the combustion power of gas heater reduces, and hot water temperature declines.
Resistance 602, resistance 603 are for the scope of resize ratio valve-driving circuit output voltage UB, when ratio value control voltage UK equals its maximum controlling voltage UM, ratio coil 630 flows through maximum controlling current, i.e. rated current, make the aperture of gas proportion regulating valve reach maximum.
Proportioning valve drive circuit can use the drive circuit of other types, such as, triode power driving circuit, voltage/PWM conversion and PWM drive circuit, etc.The function of proportioning valve drive circuit is: when ratio value control voltage UK increases, and on control ratio coil 630, electric current increases; When ratio value control voltage UK reduces, on control ratio coil 630, electric current reduces; When ratio value control voltage UK is maximum UM, on control ratio coil 630, electric current is rated current.
The classical control system block diagram of gas heater as shown in Figure 9, is made up of controller 10, water-control switch 11, ignition discharge pin 12, flame inductive needle 13, ventilating fan 14, magnetic valve 15.Its operation principle is: after opening water outlet of water heater tap, and water-control switch 11 closes, and controller 10 controls ventilating fan 14 and obtains electric work, controls igniting spray point 12 discharge igniting simultaneously; Slightly postpone Controlling solenoid valve 15 adhesive in a moment, turn on the gas-fire; Dimension igniting tens seconds held by ignition discharge pin 12, ensures the reliability of igniting; After electric discharge terminates, flame inductive needle 13 is for determining whether to light a fire successfully, and controller 10 is sensed by flame inductive needle 13 lights a fire successfully, then control to maintain magnetic valve 15 adhesive, turn on the gas-fire; Sense that igniting is unsuccessful, then Controlling solenoid valve 15 is upspring, and turns off coal gas, and water heater stops heating.
For ensureing the use safety of gas heater, gas heater can also include blast switch 16 as shown in Figure 9 and temperature detect switch (TDS) 17.In water heater use procedure, if blast switch 16 detects that exhaust fan does not start, or temperature detect switch (TDS) 17 detects that fire makes too greatly leaving water temperature too high, or when water-control switch 11 detects that current are too little, capital makes magnetic valve 15 upspring, and turns off coal gas, avoids causing security incident.
When gas heater uses device of the present invention, its control system is formed by the controller 10 of described device and system shown in Figure 9, ignition discharge pin 12, flame inductive needle 13, ventilating fan 14, magnetic valve 15, or selectively can also be included blast switch 16, temperature detect switch (TDS) 17.Water-control switch 11 in the classical control system of gas heater shown in Fig. 9 is substituted by the relay burnt gas switch 508 in device of the present invention, and the gas proportion regulating valve in device of the present invention to be arranged in fuel gas pipeline after magnetic valve 15.Owing to having generally included gas proportion regulating valve and safety shutoff valve in the gas proportion valve assembly of routine, therefore, magnetic valve 15 in the classical control system of gas heater shown in Fig. 9 preferably uses the safety shutoff valve in gas proportion valve assembly, and gas proportion regulating valve uses the gas proportion regulating valve in gas proportion valve assembly.
When gas heater uses device of the present invention, described controller 10 can use current various popular gas water heater ignition controller, such as, DKG2 controller, DKG3 controller, DHS-B7A controller, DHS-B7B controller, HD7PQA1-CP controller, and other gas water heater ignition controllers various.
When gas heater uses device of the present invention, the control circuit in device of the present invention and described controller 10 can be merged, form new temperature controller.Be the gas water heater control system block diagram of band temperature remote adjustment function as shown in Figure 10, be made up of temperature controller 20, ignition discharge pin 12, flame inductive needle 13, ventilating fan 14, magnetic valve 15, gas proportion regulating valve 21, first flow sensor 902, second quantity sensor 903, or selectively can also include blast switch 16, temperature detect switch (TDS) 17.Temperature controller 20 is made up of the functional circuit in described controller 10 and the control circuit in device of the present invention, and the control circuit in device of the present invention includes the related circuit in first flow measuring unit 100, second phasor measurement unit 200, adder circuit unit 300, ratio value computing unit 400, flow threshold switch element 500 and proportioning valve driver element 600.Similarly, the magnetic valve 15 in Figure 10 preferably uses the safety shutoff valve in gas proportion valve assembly, and gas proportion regulating valve 21 uses the gas proportion regulating valve in gas proportion valve assembly.
The foregoing is only embodiments of the invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within right of the present invention.
Claims (10)
1. a gas heater hot water temperature long range regulation apparatus, is characterized in that:
Be made up of first flow measuring unit, second phasor measurement unit, adder circuit unit, ratio value computing unit, flow threshold switch element and proportioning valve driver element;
Described gas heater has cold water inlet and the first hot water outlet, the second hot water outlet; Before described first hot water outlet, first flow sensor is installed, for detecting outlet hot water's flow of the first hot water outlet; Before described second hot water outlet, second quantity sensor is installed, for detecting outlet hot water's flow of the second hot water outlet;
Outlet hot water's flow of the first hot water outlet that first flow sensor detects by described first flow measuring unit converts first flow voltage to and exports; Outlet hot water's flow of the second hot water outlet that second quantity sensor detects by described second phasor measurement unit converts the second flow rate voltage to and exports;
Described adder circuit unit asks for first flow voltage and the second flow rate voltage sum, exports total flow voltage;
Described ratio value computing unit calculates according to the ratio calculation between first flow voltage and total flow voltage and export ratio value control voltage;
Described flow threshold switch element by flow threshold initialization circuit, compare drive circuit, relay burnt gas switch forms; Described flow threshold initialization circuit output flow threshold voltage; The function of described flow threshold switch element is: when total flow voltage is greater than flow threshold voltage, and entrance cold water total flow is greater than flow threshold, and relay burnt gas switch closes; When total flow voltage is less than flow threshold voltage, entrance cold water total flow is less than flow threshold, and relay burnt gas switch disconnects;
Described proportioning valve driver element is made up of gas proportion regulating valve and proportioning valve drive circuit; The function of described proportioning valve drive circuit is: when ratio value control voltage increases, and the aperture that proportioning valve drive circuit controls gas proportion regulating valve increases; When ratio value control voltage reduces, the aperture that proportioning valve drive circuit controls gas proportion regulating valve reduces.
2. gas heater hot water temperature long range regulation apparatus as claimed in claim 1, is characterized in that: be proportional relationship between described first flow voltage and outlet hot water's flow of the first hot water outlet; Be proportional relationship between described second flow rate voltage and outlet hot water's flow of the second hot water outlet.
3. gas heater hot water temperature long range regulation apparatus as claimed in claim 2, is characterized in that: the ratio value between described second flow rate voltage and outlet hot water's flow of the second hot water outlet equals the ratio value between outlet hot water's flow of first flow voltage and the first hot water outlet.
4. gas heater hot water temperature long range regulation apparatus as claimed in claim 2, is characterized in that: described flow threshold is determined by flow threshold voltage; Be proportional relationship between described flow threshold voltage and flow threshold; Ratio value between described flow threshold voltage and flow threshold equals the ratio value between outlet hot water's flow of first flow voltage and the first hot water outlet.
5. gas heater hot water temperature long range regulation apparatus as claimed in claim 1, it is characterized in that: described ratio value computing unit calculates according to the ratio calculation between first flow voltage and total flow voltage and export ratio value control voltage, is proportional relationship between described ratio value control voltage and described ratio.
6. gas heater hot water temperature long range regulation apparatus as claimed in claim 1, is characterized in that: outlet hot water's flow of described first hot water outlet, the second hot water outlet regulates change by mixing water valve; 2 water inlets of described mixed water valve are connected to the first hot water outlet, second hot water outlet of gas heater respectively by water pipe.
7. gas heater hot water temperature long range regulation apparatus as claimed in claim 1, is characterized in that: outlet hot water's flow of described first hot water outlet, the second hot water outlet is regulated by the first control valve, the second control valve respectively and changes; The water inlet of described first control valve is connected to the first hot water outlet of gas heater through water pipe, the water inlet of the second control valve is connected to the second hot water outlet of gas heater through water pipe; It is a water side that the delivery port of described first control valve, the second control valve is communicated with.
8. gas heater hot water temperature long range regulation apparatus as claimed in claim 1, is characterized in that: the control system of described gas heater is made up of described device, controller, ignition discharge pin, flame inductive needle, ventilating fan, magnetic valve; Gas proportion regulating valve in described device to be arranged in fuel gas pipeline after magnetic valve.
9. gas heater hot water temperature long range regulation apparatus as claimed in claim 1, is characterized in that: the control system of described gas heater is made up of temperature controller, ignition discharge pin, flame inductive needle, ventilating fan, magnetic valve, gas proportion regulating valve, first flow sensor, second quantity sensor; Control circuit in described device is included in temperature controller; Control circuit in described device includes the related circuit in first flow measuring unit, second phasor measurement unit, adder circuit unit, ratio value computing unit, flow threshold switch element and proportioning valve driver element.
10. gas heater hot water temperature long range regulation apparatus as claimed in claim 8 or claim 9, is characterized in that: described magnetic valve preferably uses the safety shutoff valve in gas proportion valve assembly; Described gas proportion regulating valve uses the gas proportion regulating valve in gas proportion valve assembly.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610000437.4A CN105485927B (en) | 2016-01-04 | 2016-01-04 | Hot water temperature remote regulating device for gas water heater |
| CN201911030956.5A CN110726256B (en) | 2016-01-04 | 2016-01-04 | Control method for gas proportional regulating valve of gas water heater |
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| CN201610000437.4A CN105485927B (en) | 2016-01-04 | 2016-01-04 | Hot water temperature remote regulating device for gas water heater |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107917534A (en) * | 2016-10-10 | 2018-04-17 | 青岛经济技术开发区海尔热水器有限公司 | A kind of current amount control method and gas heater |
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Also Published As
| Publication number | Publication date |
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| CN110726256B (en) | 2021-02-26 |
| CN110726256A (en) | 2020-01-24 |
| CN105485927B (en) | 2019-12-06 |
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