CN105466036A - Fire size remote regulating device with sensitivity cold temperature compensation of gas water heater - Google Patents
Fire size remote regulating device with sensitivity cold temperature compensation of gas water heater Download PDFInfo
- Publication number
- CN105466036A CN105466036A CN201610000440.6A CN201610000440A CN105466036A CN 105466036 A CN105466036 A CN 105466036A CN 201610000440 A CN201610000440 A CN 201610000440A CN 105466036 A CN105466036 A CN 105466036A
- Authority
- CN
- China
- Prior art keywords
- flow
- hot water
- voltage
- cold water
- outlet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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 fire size remote regulating device with sensitivity cold temperature compensation of a gas water heater. The fire size remote regulating device consists of a first flow measuring unit, a second flow measuring unit, an adder circuit unit, a cold water temperature measuring unit, a proportional value calculating unit, a flow threshold value switching unit and a proportional valve drive unit. The gas water heater comprises a first hot water outlet and a second hot water outlet, and the hot water temperature is changed by adopting a method of controlling two-way hot water flow through a water valve; when the hot water flow of the first hot water outlet is relatively increased, burning fire of the gas water heater is increased, and the hot water temperature is increased; when the hot water flow of the first hot water outlet is relatively reduced, the burning power of the gas water heater is reduced, and the hot water temperature is reduced; and regulating sensitivity is subjected to compensation control by virtue of the inlet cold water temperature of the water heater. According to the device, a wired or wireless remote controller is not required, remote regulation on the hot water temperature of the gas water heater can be realized, and the control results are stable and reliable.
Description
Technical field
The present invention relates to a kind of gas heater, especially a kind of firepower size long range regulation apparatus of gas heater band sensitivity cold water temperature compensation.
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 firepower size at a distance.
To achieve these goals, the invention provides a kind of firepower size long range regulation apparatus of gas heater band sensitivity cold water temperature compensation, be made up of first flow measuring unit, second phasor measurement unit, adder circuit unit, cold water temperature measuring 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; After described cold water temperature sensor is arranged on cold water inlet, for detecting the entrance cold water temperature of cold water inlet.
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; After described cold water temperature measuring unit measures entrance cold water temperature, be converted to sensitivity control voltage and export.
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 between first flow voltage and total flow voltage, and sensitivity control voltage calculates and export ratio value control voltage.
Described flow threshold switch element by flow threshold initialization circuit, compare drive circuit, relay burnt gas switch forms; Flow threshold initialization circuit output flow threshold voltage, flow threshold is determined by 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; Be proportional relationship between described flow threshold voltage and flow threshold.
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; 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.
The function of described cold water temperature measuring unit is: when entrance cold water temperature is minimum, and sensitivity control voltage equals maximum; When entrance cold water temperature is peak, sensitivity control voltage equals minimum of a value; When entrance cold water temperature changes between its minimum and peak, sensitivity control voltage reduces along with the rising of entrance cold water temperature.
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, and the combusting firepower of gas heater increases; When ratio value control voltage reduces, the aperture that proportioning valve drive circuit controls gas proportion regulating valve reduces, and the combusting firepower of gas heater reduces.
Described ratio value computing unit calculates according to the ratio between first flow voltage and total flow voltage, and sensitivity control voltage calculates and export ratio value control voltage; Be proportional relationship between described ratio value control voltage and described ratio; Be proportional relationship between described ratio value control voltage and described sensitivity control voltage.
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, cold water temperature 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, cold water temperature measuring 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, regulate sensitivity to compensate control by water heater entrance cold water temperature, result is reliable and stable.
Accompanying drawing explanation
Fig. 1 is the firepower size long range regulation apparatus theory diagram of gas heater band sensitivity cold water temperature compensation.
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 cold water temperature measuring unit 700.
Fig. 7 is the embodiment of ratio value computing unit 400.
Fig. 8 is the embodiment of flow threshold switch element 500.
Fig. 9 is the embodiment of proportioning valve drive circuit in proportioning valve driver element 600.
Figure 10 is gas heater classical control system block diagram.
Figure 11 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.
The firepower size long range regulation apparatus theory diagram of gas heater band sensitivity cold water temperature compensation as shown in Figure 1, is made up of first flow measuring unit 100, second phasor measurement unit 200, adder circuit unit 300, cold water temperature measuring unit 700, 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.
Cold water temperature measuring unit 700 is provided with sensitivity control voltage U3 output, after cold water temperature measuring unit 700 measures entrance cold water temperature T, is converted to sensitivity control voltage U3 and exports.
First flow voltage U 1, total flow voltage U 0, sensitivity control voltage U3 are sent to ratio value computing unit 400, ratio value computing unit 400 calculates the ratio between first flow voltage U 1 and total flow voltage U 0, then calculates ratio value control voltage UK according to this ratio and sensitivity control voltage U3; 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, cold water temperature sensor 907, 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 the mixed water valve 931 outside gas heater, first connecting water pipe 925, second connecting water pipe 926, heat of mixing water pipe 927, Water outlet spray head 932 forms.
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; After described cold water temperature sensor 907 is arranged on cold water inlet 906, for detecting the entrance cold water temperature T of cold water inlet 906.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, and cold water temperature sensor 907 is arranged on cold water pipe 921.
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, the pin one 0 of LM2917 is first flow voltage output end, exports first flow voltage U 1.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 is provided with total flow voltage output end, two input is connected to first flow voltage output end, the second flow voltage output end respectively, input first flow voltage U 1, second flow voltage U 2, 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.
Cold water temperature measuring unit 700 is provided with sensitivity control voltage output, after measuring entrance cold water temperature T, is converted to sensitivity control voltage U3 and exports.If the minimum of entrance cold water temperature is TL, peak is TH, and entrance cold water temperature T is in interval [TL, TH] change.The function of cold water temperature measuring unit 700 is: when entrance cold water temperature T equals minimum TL, sensitivity control voltage U3 equals maximum U3max; When entrance cold water temperature T equals peak TH, sensitivity control voltage U3 equals minimum of a value U3min; Entrance cold water temperature T is when interval [TL, TH] changes, and sensitivity control voltage U3 reduces along with the increase of entrance cold water temperature T.
As shown in Figure 6, be made up of cold water temperature sensor 907, amplifier 701, resistance 702, resistance 703, resistance 704, cold water temperature sensor 907 selects NTC thermistor to the embodiment of cold water temperature measuring unit 700.Amplifier 701, resistance 702, resistance 703, resistance 704 form temperature/voltage change-over circuit.
If in embodiment illustrated in fig. 6, the resistance of cold water temperature sensor 907 is RT, and the resistance of resistance 702, resistance 703, resistance 704 is respectively R2, R3, R4, then have
；
Wherein
For fixed value.
In embodiment illustrated in fig. 6, when entrance cold water temperature T declines, RT increases, and sensitivity control voltage U3 increases; When entrance cold water temperature T rises, RT reduces, and sensitivity control voltage U3 reduces.
Ratio value computing unit 400 is provided with the first molecule voltage input end, the second molecule voltage input end, denominator voltage input end and ratio value control voltage output.Described first molecule voltage input end is connected to first flow voltage output end, input first flow voltage U 1; Described denominator voltage input end is connected to total flow voltage output end, input total flow voltage U 0; Described second molecule voltage input end is connected to sensitivity control voltage output, input sensitivity control voltage U3.Ratio value computing unit 400 exports as ratio value control voltage UK, and embodiment as shown in Figure 7, 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.The voltage inputing to AD5330 reference voltage input VREF is sensitivity control voltage U3, and 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, and sensitivity control voltage U3 calculates ratio value control voltage UK.U3 is the maximum of ratio value control voltage UK, the sensitivity of its size adjustment ratio value control voltage UK.When entrance cold water temperature T declines, sensitivity control voltage U3 increases, and regulate the sensitivity of ratio value control voltage UK to increase, the maximum of ratio value control voltage UK increases; When entrance cold water temperature T rises, sensitivity control voltage U3 reduces, and regulate the sensitivity of ratio value control voltage UK to decline, the maximum of ratio value control voltage UK reduces.When entrance cold water temperature T changes to minimum TL from peak TH, sensitivity control voltage U3 changes to maximum U3max from minimum of a value U3min.Cold water temperature only plays compensating action in adjustment process, and the minimum of a value U3min of therefore sensitivity control voltage U3 is chosen as 0.4 ~ 1 times of maximum U3max.When U3min equals U3max, described device does not have sensitivity cold water temperature compensation function.
The minimum of a value U3min of sensitivity control voltage U3 and maximum U3max realizes by adjusting component parameters in cold water temperature measuring unit 700.
Cold water temperature measuring unit 700 can also use embodiment illustrated in fig. 6 outside circuit.Such as, cold water temperature sensor 907 can adopt PTC thermistor, now, by the location swap of middle cold water temperature sensor 907 embodiment illustrated in fig. 6 with resistance 702.More flexible during in order to adjust minimum of a value U3min and the maximum U3max of sensitivity control voltage U3, can a resistance in parallel on cold water temperature sensor 907 in the embodiment shown in fig. 6.In addition, when using NTC thermistor, PTC thermistor as cold water temperature sensor 907, resistance bridge can also be adopted to carry out measuring tempeature and to change cold water temperature sensor 907 resistance change caused.
It is embodiment illustrated in fig. 7 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, the analog divider using the integrated analog multipliers such as AD734, AD534/divider to form, analog multiplier circuit calculate UK according to U0, U1, U3.
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 8, 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.
In embodiment illustrated in fig. 8, the bleeder circuit of resistance 502, resistance 503 composition is flow threshold QY initialization circuit, is provided with flow threshold voltage output end, exports the flow threshold voltage U Y of setting; 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 input of proportioning valve drive circuit is connected to ratio value control voltage output, and the aperture of gas proportion regulating valve is driven by proportioning valve drive circuit.
The embodiment of proportioning valve drive circuit as shown in Figure 9, 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 combusting firepower 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 combusting firepower 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 combusting firepower 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, 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, on control ratio coil 630, electric current is rated current.
The classical control system block diagram of gas heater as shown in Figure 10, 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 10 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 10, 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 Figure 10 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 Figure 10 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 11, 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, cold water temperature sensor 907, 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, cold water temperature measuring unit 700, ratio value computing unit 400, flow threshold switch element 500 and proportioning valve driver element 600.Similarly, the magnetic valve 15 in Figure 11 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 firepower size long range regulation apparatus for gas heater band sensitivity cold water temperature compensation, is characterized in that:
Be made up of first flow measuring unit, second phasor measurement unit, adder circuit unit, cold water temperature measuring 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; After described cold water inlet, cold water temperature sensor is installed, for detecting the entrance cold water temperature of cold water inlet;
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; After described cold water temperature measuring unit measures entrance cold water temperature, be converted to sensitivity control voltage and export;
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 between first flow voltage and total flow voltage, and sensitivity control voltage calculates and export ratio value control voltage;
Described flow threshold switch element by flow threshold initialization circuit, compare drive circuit, relay burnt gas switch forms; Flow threshold initialization circuit output flow threshold voltage, flow threshold is determined by 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, and the combusting firepower of gas heater increases; When ratio value control voltage reduces, the aperture that proportioning valve drive circuit controls gas proportion regulating valve reduces, and the combusting firepower of gas heater reduces.
2. the firepower size long range regulation apparatus of gas heater band sensitivity cold water temperature compensation 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; Be proportional relationship between described flow threshold voltage and flow threshold.
3. the firepower size long range regulation apparatus of gas heater band sensitivity cold water temperature compensation 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; 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.
4. the firepower size long range regulation apparatus of gas heater band sensitivity cold water temperature compensation as claimed in claim 1, it is characterized in that: the function of described cold water temperature measuring unit is: when entrance cold water temperature is minimum, and sensitivity control voltage equals maximum; When entrance cold water temperature is peak, sensitivity control voltage equals minimum of a value; When entrance cold water temperature changes between its minimum and peak, sensitivity control voltage reduces along with the rising of entrance cold water temperature.
5. the firepower size long range regulation apparatus of gas heater band sensitivity cold water temperature compensation as claimed in claim 4, it is characterized in that: described ratio value computing unit calculates according to the ratio between first flow voltage and total flow voltage, and sensitivity control voltage calculates and export ratio value control voltage; Be proportional relationship between described ratio value control voltage and described ratio; Be proportional relationship between described ratio value control voltage and described sensitivity control voltage.
6. the firepower size long range regulation apparatus of gas heater band sensitivity cold water temperature compensation 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. the firepower size long range regulation apparatus of gas heater band sensitivity cold water temperature compensation 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. the firepower size long range regulation apparatus of gas heater band sensitivity cold water temperature compensation 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. the firepower size long range regulation apparatus of gas heater band sensitivity cold water temperature compensation 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, cold water temperature 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, cold water temperature measuring unit, adder circuit unit, ratio value computing unit, flow threshold switch element and proportioning valve driver element.
10. the firepower size long range regulation apparatus of gas heater band sensitivity cold water temperature compensation 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.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911030962.0A CN110726257B (en) | 2016-01-04 | 2016-01-04 | Method for controlling on-off and flow of gas for gas water heater |
| CN201610000440.6A CN105466036B (en) | 2016-01-04 | 2016-01-04 | Firepower size remote adjusting device with sensitivity cold water temperature compensation function for gas water heater |
| CN201911031816.XA CN110726258B (en) | 2016-01-04 | 2016-01-04 | Control method of gas proportional regulating valve with cold water temperature compensation for gas water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610000440.6A CN105466036B (en) | 2016-01-04 | 2016-01-04 | Firepower size remote adjusting device with sensitivity cold water temperature compensation function for gas water heater |
Related Child Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911030962.0A Division CN110726257B (en) | 2016-01-04 | 2016-01-04 | Method for controlling on-off and flow of gas for gas water heater |
| CN201911031816.XA Division CN110726258B (en) | 2016-01-04 | 2016-01-04 | Control method of gas proportional regulating valve with cold water temperature compensation for gas water heater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105466036A true CN105466036A (en) | 2016-04-06 |
| CN105466036B CN105466036B (en) | 2019-12-06 |
Family
ID=55604011
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911031816.XA Active CN110726258B (en) | 2016-01-04 | 2016-01-04 | Control method of gas proportional regulating valve with cold water temperature compensation for gas water heater |
| CN201911030962.0A Active CN110726257B (en) | 2016-01-04 | 2016-01-04 | Method for controlling on-off and flow of gas for gas water heater |
| CN201610000440.6A Active CN105466036B (en) | 2016-01-04 | 2016-01-04 | Firepower size remote adjusting device with sensitivity cold water temperature compensation function for gas water heater |
Family Applications Before (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911031816.XA Active CN110726258B (en) | 2016-01-04 | 2016-01-04 | Control method of gas proportional regulating valve with cold water temperature compensation for gas water heater |
| CN201911030962.0A Active CN110726257B (en) | 2016-01-04 | 2016-01-04 | Method for controlling on-off and flow of gas for gas water heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (3) | CN110726258B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110207394A (en) * | 2018-11-26 | 2019-09-06 | 华帝股份有限公司 | Temperature control pipeline for gas water heater, gas water heater and control method |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111405698B (en) * | 2020-03-20 | 2022-02-11 | 云南中烟工业有限责任公司 | Electromagnetic heating circuit based on double closed-loop ratio control and control method and application thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1207477A (en) * | 1998-06-17 | 1999-02-10 | 张竞生 | Water-controlled water heater and water-controlled constant-temp. water heater |
| CN1548804A (en) * | 2003-05-15 | 2004-11-24 | 株式会社庆东Boiler | Air ratio control water heater |
| JP2007003058A (en) * | 2005-06-22 | 2007-01-11 | Matsushita Electric Ind Co Ltd | Hot water supply device |
| CN102022832A (en) * | 2009-09-11 | 2011-04-20 | 海尔集团公司 | Water temperature control device and water temperature control method for gas water heater |
| CN102466327A (en) * | 2010-11-05 | 2012-05-23 | 西安扩力机电科技有限公司 | Safety monitoring system for household gas water heater |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6219611A (en) * | 1985-07-18 | 1987-01-28 | Matsushita Electric Ind Co Ltd | Control system for gas water heater |
| JP3219364B2 (en) * | 1995-09-28 | 2001-10-15 | リンナイ株式会社 | Solar water heater connection unit for water heater |
| CN2295965Y (en) * | 1997-05-26 | 1998-10-28 | 海南爱普电子实业有限公司 | Gas water heater with fuzzy control |
| CN103574911B (en) * | 2013-10-30 | 2015-11-18 | 东华大学 | A kind of water temperature and flow automatic regulating system with time delay memory characteristic |
| CN104848552B (en) * | 2015-05-20 | 2018-07-27 | 芜湖美的厨卫电器制造有限公司 | Temperature control method of water, device and heat exchange station |
| CN204880765U (en) * | 2015-08-18 | 2015-12-16 | 上海添能实业有限公司 | Constant temperature hot water unit |
-
2016
- 2016-01-04 CN CN201911031816.XA patent/CN110726258B/en active Active
- 2016-01-04 CN CN201911030962.0A patent/CN110726257B/en active Active
- 2016-01-04 CN CN201610000440.6A patent/CN105466036B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1207477A (en) * | 1998-06-17 | 1999-02-10 | 张竞生 | Water-controlled water heater and water-controlled constant-temp. water heater |
| CN1548804A (en) * | 2003-05-15 | 2004-11-24 | 株式会社庆东Boiler | Air ratio control water heater |
| JP2007003058A (en) * | 2005-06-22 | 2007-01-11 | Matsushita Electric Ind Co Ltd | Hot water supply device |
| CN102022832A (en) * | 2009-09-11 | 2011-04-20 | 海尔集团公司 | Water temperature control device and water temperature control method for gas water heater |
| CN102466327A (en) * | 2010-11-05 | 2012-05-23 | 西安扩力机电科技有限公司 | Safety monitoring system for household gas water heater |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110207394A (en) * | 2018-11-26 | 2019-09-06 | 华帝股份有限公司 | Temperature control pipeline for gas water heater, gas water heater and control method |
| CN110207394B (en) * | 2018-11-26 | 2023-11-21 | 华帝股份有限公司 | Temperature control pipeline for gas water heater, gas water heater and control method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110726257B (en) | 2021-02-26 |
| CN110726258A (en) | 2020-01-24 |
| CN110726257A (en) | 2020-01-24 |
| CN105466036B (en) | 2019-12-06 |
| CN110726258B (en) | 2021-02-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102778019A (en) | Instantaneous gas water heater with accurate temperature control | |
| CN105466036A (en) | Fire size remote regulating device with sensitivity cold temperature compensation of gas water heater | |
| CN105485927A (en) | Remote adjusting device of hot water temperature of gas water heater | |
| CN205351791U (en) | Gas heater takes combustion power remotely adjusting device of sensitivity cold water heat capacity compensation | |
| CN205351790U (en) | Gas heater takes hot water temperature remotely adjusting device of sensitivity cold water heat capacity compensation | |
| CN205561283U (en) | Gas heater firepower size remotely adjusting device | |
| CN205481806U (en) | Gas heater takes sensitivity cold water temperature compensating's firepower size remotely adjusting device | |
| CN105546831A (en) | Sensitivity cold water temperature compensation burning power remote adjustment device for gas water heater | |
| CN205351789U (en) | Gas heater takes sensitivity cold water temperature compensating's combustion power remotely adjusting device | |
| CN110749110B (en) | Circuit for controlling on-off and flow of gas for gas water heater | |
| CN205316688U (en) | Gas heater hot water temperature remotely adjusting device | |
| CN105650883A (en) | Firepower remote regulating device of gas water heater | |
| US4695052A (en) | Hot water heating system using a heat consumption meter | |
| CN105605787A (en) | Combustion power remote adjustment device having sensitivity cold water thermal capacity compensation function and used for gas water heater | |
| CN112032997B (en) | Gas water heater and control method thereof | |
| CN207741332U (en) | Flue Gas Water Heater | |
| CN211854485U (en) | Solar energy and gas combined constant temperature water heater | |
| GB2156963A (en) | Gase-fired water heaters | |
| JPS61202011A (en) | Combustion apparatus of forced feed and discharge type | |
| CN208442340U (en) | A kind of valve body structure and gas furnace | |
| CN114636248A (en) | Gas water heater with scald-proof function and control method thereof | |
| JPH0335955Y2 (en) | ||
| CN105526714A (en) | Gas water heater with remotely-regulated combustion power | |
| JPS59185938A (en) | Water heater | |
| CN105509330A (en) | Method for regulating combustion power of gas water heater |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20201013 Address after: No.76 Minfeng South Road, Nanfeng Town, Zhangjiagang City, Suzhou City, Jiangsu Province Patentee after: ZHANGJIAGANG DONGDA INDUSTRIAL TECHNOLOGY Research Institute Address before: 237000 Democratic constituency of Shiji street, Anfeng Town, Shouxian County, Huainan City, Anhui Province Patentee before: Wang Jingjing Effective date of registration: 20201013 Address after: 237000 Democratic constituency of Shiji street, Anfeng Town, Shouxian County, Huainan City, Anhui Province Patentee after: Wang Jingjing Address before: 412007 School of industry, research and production, Hunan University of Technology, 88 West Taishan Road, Zhuzhou, Hunan Patentee before: HUNAN University OF TECHNOLOGY |