CN112577200A - Wind speed measuring assembly, gas combustion equipment and control method of gas combustion equipment - Google Patents
Wind speed measuring assembly, gas combustion equipment and control method of gas combustion equipment Download PDFInfo
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- CN112577200A CN112577200A CN201911063106.5A CN201911063106A CN112577200A CN 112577200 A CN112577200 A CN 112577200A CN 201911063106 A CN201911063106 A CN 201911063106A CN 112577200 A CN112577200 A CN 112577200A
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- 238000002485 combustion reaction Methods 0.000 title claims abstract description 76
- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000005259 measurement Methods 0.000 claims abstract description 76
- 230000008859 change Effects 0.000 claims abstract description 56
- 230000002349 favourable effect Effects 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 98
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 11
- 238000005496 tempering Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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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
- F24H9/18—Arrangement or mounting of grates or heating means
- F24H9/1809—Arrangement or mounting of grates or heating means for water heaters
- F24H9/1832—Arrangement or mounting of combustion heating means, e.g. grates or burners
- F24H9/1836—Arrangement or mounting of combustion heating means, e.g. grates or burners using fluid fuel
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/02—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N3/00—Regulating air supply or draught
- F23N3/002—Regulating air supply or draught using electronic means
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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
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P5/00—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft
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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Aviation & Aerospace Engineering (AREA)
- General Physics & Mathematics (AREA)
- Regulation And Control Of Combustion (AREA)
Abstract
The invention discloses a wind speed measuring assembly, gas combustion equipment and a control method of the gas combustion equipment. The wind speed measurement assembly comprises: the air supply assembly is used for conveying combustion-supporting gas; a measuring unit having a resistance element that changes with a change in temperature; a control unit that determines a resistance value of the measurement unit based on a voltage value of the measurement unit under a constant current. Through setting up the measuring unit, can in time, stably, accurately measure combustion-supporting gas's wind speed, improve gas combustion equipment's anti-wind performance to, when the air output changes, can make combustion-supporting gas match with the gas betterly, thereby be favorable to improving gas combustion equipment's burning operating mode, reduce the emission of harmful gas in the gas combustion equipment tail gas.
Description
Cross Reference to Related Applications
The application claims priority of application date of 2019, 9 and 30, application number of 201921674133.1 and patent application name of "hot water equipment", and priority of application date of 2019, 9 and 30, application number of 201910943633.9 and patent application name of "hot water equipment".
Technical Field
The invention relates to the field of gas water heaters, in particular to a wind speed measuring assembly, gas combustion equipment and a control method of the gas combustion equipment.
Background
When the gas combustion equipment (taking a gas water heater as an example) operates, the gas flow can be driven to move, when the external resistance changes, the moving states of the gas flow are different, and the gas flow and the air quantity are correspondingly regulated by monitoring the gas flow state, so that the use comfort, the safety and the wind resistance of the gas water heater can be improved, a good combustion working condition can be ensured, and the emission of harmful gas in tail gas of the gas water heater is reduced.
At present, the gas water heater generally detects the change of the wind speed of a fan through installing a wind pressure sensor or through the current value of a motor, but still has the installation position of the wind pressure sensor and great influence on a measured value due to angle deviation, and the problem that the wind speed precision is not enough is judged through the current value, so that the gas water heater cannot adjust the air supply quantity in real time, further the gas combustion is insufficient, the emission of harmful gas in tail gas is increased, and when the external wind pressure is too large, the problem of potential safety hazards such as tempering can be caused.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the above-mentioned problems in the prior art. Therefore, the invention provides the wind speed measuring assembly which is beneficial to accurately measuring the wind speed change, so that the wind resistance of the gas combustion equipment is improved.
The invention also provides gas combustion equipment.
The invention also provides a control method of the gas combustion equipment.
An anemometry assembly according to an embodiment of the present invention includes: the air supply assembly is used for conveying combustion-supporting gas; a measuring unit having a resistance element that changes with a change in temperature; a control unit that determines a resistance value of the measurement unit based on a voltage value of the measurement unit under a constant current.
According to the wind speed measuring assembly, the wind speed of the combustion-supporting gas can be timely, stably and accurately measured by arranging the measuring unit, so that the wind supply assembly can adjust the magnitude of the air supply quantity in real time, the wind resistance of the gas combustion equipment can be improved when the wind speed measuring assembly is applied to the gas combustion equipment, and the combustion-supporting gas can be better matched with the gas when the air supply quantity is changed, so that the combustion working condition of the gas combustion equipment can be improved, and the emission of harmful gas in tail gas of the gas combustion equipment is reduced.
According to some embodiments of the invention, the control unit is connected to the air supply assembly and is configured to control an air supply amount of the air supply assembly.
Optionally, the measurement unit is a thermistor.
According to some embodiments of the present invention, the measuring unit includes at least an actual measuring unit, and the control unit determines a change in wind speed of the air supply assembly based on a change in voltage value of the actual measuring unit per unit time in a windy state as compared to a no-wind state.
According to some embodiments of the invention, the measuring unit comprises at least an actual measuring unit, and the control unit determines the wind speed change of the air supply assembly based on the speed of the voltage value change of the actual measuring unit in unit time.
According to some embodiments of the invention, the measurement unit comprises: the device comprises an actual measuring unit and a comparison measuring unit, wherein the comparison measuring unit is matched with the actual measuring unit for use, and the comparison measuring unit is arranged at a windless position.
Further, the control unit determines the wind speed change of the air supply assembly based on the voltage value change of the actual measurement unit compared with the comparison measurement unit in unit time.
According to a second aspect of the invention, the gas combustion device comprises the wind speed measuring assembly.
The gas combustion apparatus includes: the air supply assembly is used for conveying combustion-supporting gas; the measuring unit is used for measuring the wind speed and at least comprises an actual measuring unit which is arranged at an air inlet or an air outlet of the air supply assembly;
a control method of a gas combustion apparatus according to an embodiment of a third aspect of the present invention includes:
step S1, determining the wind speed change of the air supply assembly based on the voltage value change of the measuring unit in unit time;
step S2, when the measuring unit detects that the wind speed of the air inlet or the air outlet is reduced, the air supply quantity of the air supply assembly is increased until the wind speed is restored to the target wind speed value; and when the measuring unit detects that the wind speed of the air inlet or the air outlet is increased, reducing the air supply quantity of the air supply assembly until the wind speed is restored to the target wind speed value.
According to some embodiments of the invention, the gas combustion device comprises: a control unit that determines a resistance value of the measurement unit based on a voltage value of the measurement unit under a constant current.
According to some embodiments of the present invention, the control unit determines a change in the wind speed of the air supply assembly based on a change in a voltage value of the actual measurement unit per unit time in a windy state as compared to a no-wind state.
According to some embodiments of the invention, the control unit determines the wind speed change of the air supply assembly based on the speed of the change of the voltage value of the actual measurement unit in unit time.
According to some embodiments of the invention, the measurement unit further comprises: and the control unit determines the wind speed change of the air supply assembly based on the voltage value change of the actual measurement unit compared with the comparison measurement unit in unit time.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
FIG. 1 is a schematic view of a gas combustion device with an actual measurement unit at the air inlet and a comparative measurement unit;
FIG. 2 is a schematic view of a gas combustion device with an actual measurement unit at an air outlet and a comparison measurement unit;
FIG. 3 is a schematic view of the inlet or outlet being airless;
FIG. 4 is a schematic view of the air inlet or outlet with wind;
fig. 5 is a flowchart of a control method of the gas combustion apparatus.
Reference numerals:
the device comprises an air supply assembly 1, an actual measurement unit 2, a control unit 3, a comparison measurement unit 4 and a gas combustion device 10.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically connected, electrically connected or can communicate with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The wind speed measuring assembly according to an embodiment of the present invention is described in detail below with reference to fig. 1 to 4. For convenience of description, the structure of the wind speed measuring assembly and the advantageous effects obtained by using the wind speed measuring assembly will be described by taking the wind speed measuring assembly as an example applied to the gas combustion apparatus 10.
Referring to fig. 1 to 4, a wind speed measuring assembly according to an embodiment of the present invention includes: air supply assembly 1, measuring unit and control unit 3.
The air supply assembly 1 is used for conveying combustion-supporting gas, and ensures that mixed gas of the combustion-supporting gas and fuel gas can be combusted in the combustor, so that water in the heat exchanger is heated. The air supply assembly 1 can be a fan, and the air supply quantity of air entering the gas combustion device 10 can be controlled by changing the power of the fan.
The measuring unit can be used to measure the wind speed, the measuring unit having a resistance element that varies with temperature, the control unit 3 determining the resistance value of the measuring unit based on the voltage value of the measuring unit at constant current.
According to ohm's law, when the current value is constant, the voltage value at the two ends of the resistance element is in direct proportion to the resistance value, the control unit 3 outputs a constant current to the measuring unit, and the measuring unit feeds back a voltage signal to the control unit 3. When the temperature of the measuring unit changes, the voltage value fed back by the measuring unit also changes, and the change of the resistance value of the measuring unit can be known according to the change of the voltage value.
The measuring unit can be arranged at the air inlet or the air outlet of the air supply assembly 1, when the air at the air inlet or the air outlet blows over the measuring unit, the air can dissipate heat, the temperature of the measuring unit can change, the voltage signal fed back to the control unit 3 also changes along with the change of the temperature, and the voltage change degrees caused by different wind speeds are different.
The measuring unit is communicated with the control unit 3, the measuring unit can feed the wind speed measuring result back to the control unit 3, and the air supply assembly 1 takes corresponding measures according to the wind speed measuring result. Specifically, when the wind speed changes, the resistance value of the resistance element changes, and the change in the resistance value is fed back to the control unit 3, so that the control unit 3 can adjust the air supply assembly 1 to change the air supply amount of the air supply assembly 1.
Alternatively, the resistance element may have a larger resistance value at a higher temperature, and the resistance element may have a smaller resistance value at a higher temperature.
Specifically, under the same power of the fan, when the flue of the gas combustion device 10 is blocked or the external wind pressure is too large, the wind speed at the wind inlet is reduced, so that the wind output is reduced, further, the gas is not fully combusted, a large amount of harmful gas is generated after combustion, and dangerous situations such as tempering and the like can occur, the wind speed reduction of the air inlet or the air outlet can be detected by the measuring unit and fed back to the control unit 3, the power of the fan is improved by the gas combustion equipment 10 in real time, the wind speed of the air inlet or the air outlet is increased until the wind speed is restored to a target wind speed value, so that the air supply component 1 can adjust the air supply quantity in real time according to the wind speed measuring result, further, the combustion condition of the gas combustion equipment 10 is improved, incomplete combustion of gas is reduced, the emission of harmful gas in tail gas of the gas combustion equipment 10 is reduced, and the wind resistance of the gas combustion equipment 10 is improved.
In addition, when the measuring unit detects that the wind speed of the air inlet or the air outlet is increased, the wind speed increasing signal can be fed back to the control unit 3, the power of the fan is reduced by the gas combustion equipment 10 in real time, and the wind speed of the air inlet or the air outlet is reduced until the wind speed is restored to the target wind speed value, so that the energy waste of the fan is avoided.
According to the wind speed measuring component, the wind speed of the combustion-supporting gas can be timely, stably and accurately measured by arranging the measuring unit, so that the air supply component 1 can adjust the air supply quantity in real time, the wind resistance of the gas combustion equipment 10 is improved, and the combustion-supporting gas can be better matched with the gas when the air supply quantity is changed, so that the combustion working condition of the gas combustion equipment 10 is improved, and the emission of harmful gas in tail gas of the gas combustion equipment 10 is reduced.
Further, the control unit 3 links to each other with air supply subassembly 1, and the control unit 3 is used for controlling the air supply volume of air supply subassembly 1, and the power of the steerable fan of control unit 3 to the air supply volume of control air supply subassembly 1 promotes the wind resistance of gas combustion equipment 10, and then improves the burning operating mode of gas combustion equipment 10, improves combustion efficiency.
Optionally, the measurement unit is a thermistor. The thermistor may be a positive temperature coefficient thermistor or a negative temperature coefficient thermistor. For convenience of description, in the embodiments of the present invention, the measurement unit is a ptc thermistor as an example. It should be noted that any sensor whose resistance value changes with temperature may be regarded as a "thermistor" according to the present invention.
The thermistor is simple and convenient to mount, the mounting directivity of the thermistor is not greatly limited, and no obvious measurement error is generated on the measurement result of the thermistor when the thermistor is parallel to or perpendicular to the wind direction. The thermistor has high sensitivity and high detection precision, and can judge the change of the wind speed in time and feed the change back to the control unit 3. And the thermistor has good stability and long service life. In addition, the thermistor has small volume and small occupied space, and can be flexibly installed.
Referring to fig. 3 to 4, the measuring unit includes at least an actual measuring unit 2, and the control unit 3 determines a change in the wind speed of the air supply assembly 1 based on a change in the voltage value of the wind state actual measuring unit 2 per unit time as compared to the no-wind state actual measuring unit 2.
When wind at the air inlet or the air outlet blows through the thermistor, the wind exchanges heat with the actual measuring unit 2, the temperature of the actual measuring unit 2 changes, and further the voltage of the actual measuring unit 2 changes, in other words, the control unit 3 can determine the change of the wind speed by measuring the voltage value change of the wind state and the no-wind state of the actual measuring unit 2.
For example, the voltage value of the actual measurement unit 2 in the windless state is U1, the voltage value of the actual measurement unit 2 after the wind blows in the unit time in the first wind speed state is U2, the voltage value of the actual measurement unit 2 after the wind blows in the unit time in the second wind speed state is U3, and if U1-U2 is less than U1-U3, that is, U2 > U3, it is indicated that the resistance value is greatly reduced in the second wind speed state, and the wind speed in the second wind speed state is greater than the wind speed in the first wind speed state.
In some alternative embodiments, the measuring unit comprises at least an actual measuring unit 2, and the control unit 3 determines the wind speed change of the air supply assembly 1 based on the speed of the voltage value change of the actual measuring unit 2 in unit time. For example, the initial voltage value of the actual measurement unit 2 is U4, the voltage value variation of the actual measurement unit 2 is Δ U5 after the wind blows in the unit time in the first wind speed state, the voltage value variation of the actual measurement unit 2 is Δ U6 after the wind blows in the unit time in the second wind speed state, and if Δ U6 > Δu5, it is described that the resistance value is greatly decreased in the second wind speed state, and the wind speed in the second wind speed state is higher than the wind speed in the first wind speed state.
Specifically, the higher the wind speed, the faster the heat exchange, the faster the thermistor temperature change speed, and the faster the voltage change of the actual measurement unit 2 per unit time; the lower the wind speed, the slower the heat exchange, the slower the thermistor temperature change speed, and the slower the voltage change of the actual measuring unit 2 per unit time, in other words, the control unit 3 can determine the amount of change of the wind speed by measuring the speed of the change of the voltage of the actual measuring unit 2.
Referring to fig. 1-2, in further embodiments of the present invention, a measurement unit includes: actual measuring unit 2 and comparison measuring unit 4, comparison measuring unit 4 and control unit 3 carry out the communication, and compare measuring unit 4 and use with actual measuring unit 2 cooperation, compare measuring unit 4 and set up in the no wind department.
The comparison measuring unit 4 may be a thermistor of the same type as the actual measuring unit 2, and the comparison measuring unit 4 is placed in a windless area where air flows little and the air flow is stable. Because the comparison measuring unit 4 is not influenced by air inlet or air outlet, the temperature is stable, the resistance value is stable, and the voltage signal fed back to the control unit 3 is stable. The wind speed is judged by comparing the voltage signal difference of the actual measuring unit 2 and the voltage signal difference of the measuring unit 4.
Further, the control unit 3 determines the wind speed change of the blowing assembly 1 based on the voltage value change of the actual measuring unit 2 compared to the measuring unit 4 per unit time.
Specifically, the voltage difference of the actual measurement unit 2 compared with the measurement unit 4 is larger, which indicates that the wind speed at the air inlet or the air outlet is larger, and the voltage difference of the actual measurement unit 2 compared with the measurement unit 4 is smaller, which indicates that the wind speed at the air inlet or the air outlet is smaller.
For example, the voltage value of the comparison measurement unit 4 is U7, the voltage value of the actual measurement unit 2 is U8 after the wind blows in unit time in the first wind speed state, the voltage value of the actual measurement unit 2 is U9 after the wind blows in unit time in the second wind speed state, if U7-U8 is less than U7-U9, that is, U8 is greater than U9, it is indicated that the resistance value is greatly reduced in the second wind speed state, and the wind speed in the second wind speed state is greater than the wind speed in the first wind speed state.
According to the gas combustion device 10 of the second aspect of the present invention, including the wind speed measuring assembly, the wind resistance of the gas combustion device 10 can be improved by providing the wind speed measuring assembly.
In some embodiments, the gas combustion device 10 is a gas water heater or a wall-hanging stove.
In some embodiments, not shown, a component can be heated by current, and heat of the component is transferred to the thermistor through the heat-conducting medium, so that the temperature of the thermistor is always higher than the temperature of air outside the gas water heater or the wall-mounted boiler, and therefore the flowing air is used for carrying away heat to measure the temperature.
Referring to fig. 1 to 4, the gas combustion apparatus 10 may include: air supply assembly 1, measuring unit, control unit 3.
The air supply assembly 1 is used for conveying combustion-supporting gas, the measuring unit is used for measuring the air speed, the measuring unit at least comprises an actual measuring unit 2, and the actual measuring unit 2 is arranged at an air inlet or an air outlet of the air supply assembly 1. Specifically, the actual measurement unit 2 is placed at a non-turbulent position such as an air inlet or an air outlet, or an air suction inlet, etc. of the air supply assembly 1, and is contacted with the flowing gas to measure the wind speed. And the actual measurement unit 2 is arranged near the air inlet or the air outlet, namely near the air supply assembly 1, which is beneficial to improving the detection precision of the actual measurement unit 2 to the wind speed.
The actual measurement unit 2 communicates with the control unit 3, the actual measurement unit 2 can feed the wind speed measurement result back to the control unit 3, and the air supply assembly 1 takes corresponding measures according to the wind speed measurement result.
Specifically, under the same power of the fan, when the flue of the gas combustion device 10 is blocked or the external wind pressure is too large, the wind speed at the wind inlet is reduced, so that the wind output is reduced, further, the gas is not fully combusted, a large amount of harmful gas is generated after combustion, and dangerous situations such as tempering and the like can occur, the actual measurement unit 2 can detect that the wind speed of the air inlet or the air outlet is reduced and feed back to the control unit 3, the gas combustion equipment 10 can improve the power of the fan in real time and increase the wind speed of the air inlet or the air outlet until the wind speed is restored to a target wind speed value, so that the air supply component 1 can adjust the air supply quantity in real time according to the wind speed measurement result, further, the combustion condition of the gas combustion equipment 10 is improved, incomplete combustion of gas is reduced, the emission of harmful gas in tail gas of the gas combustion equipment 10 is reduced, and the wind resistance of the gas combustion equipment 10 is improved.
In addition, when the actual measurement unit 2 detects that the wind speed of the air inlet or the air outlet is increased, the wind speed increase signal can be fed back to the control unit 3, the gas combustion equipment 10 reduces the power of the fan in real time, and reduces the wind speed of the air inlet or the air outlet until the wind speed returns to the target wind speed value, so that the energy waste of the fan is avoided.
Referring to fig. 5, a control method of the gas combustion apparatus 10 according to the embodiment of the third aspect of the present invention includes:
step S1, determining the wind speed change of the air supply assembly 1 based on the voltage value change of the measuring unit in unit time;
step S2, when the measuring unit detects that the wind speed of the air inlet or the air outlet is reduced, the air supply quantity of the air supply assembly 1 is increased until the wind speed is restored to the target wind speed value; when the measuring unit detects that the wind speed of the air inlet or the air outlet is increased, the air supply quantity of the air supply assembly 1 is reduced until the wind speed is restored to the target wind speed value.
According to the control method of the gas combustion equipment 10, the wind speed of the combustion-supporting gas can be timely, stably and accurately measured, the wind resistance of the gas combustion equipment 10 is improved, and the combustion-supporting gas can be better matched with the gas when the air supply quantity is changed, so that the combustion working condition of the gas combustion equipment 10 is favorably improved, and the emission of harmful gas in tail gas of the gas combustion equipment 10 is reduced.
The gas combustion device 10 further comprises: a control unit 3, the control unit 3 determining a resistance value of the measurement unit based on a voltage value of the measurement unit under a constant current.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example" or "some examples" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples described in this specification can be combined and combined by those skilled in the art.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (13)
1. An anemometry assembly, comprising:
the air supply assembly is used for conveying combustion-supporting gas;
a measuring unit having a resistance element that changes with a change in temperature;
a control unit that determines a resistance value of the measurement unit based on a voltage value of the measurement unit under a constant current.
2. The wind speed measurement assembly of claim 1, wherein the control unit is connected to the air supply assembly and is configured to control an amount of air supplied by the air supply assembly.
3. The wind speed measurement assembly according to claim 1, wherein the measurement unit is a thermistor.
4. The wind speed measurement assembly of claim 1, wherein the measurement unit includes at least an actual measurement unit, and the control unit determines a change in wind speed of the air supply assembly based on a change in voltage value of the actual measurement unit per unit time in a windy state as compared to a no-wind state.
5. The wind speed measurement assembly of claim 1, wherein the measurement unit comprises at least an actual measurement unit, and the control unit determines the wind speed change of the air supply assembly based on the speed of the voltage value change of the actual measurement unit per unit time.
6. The wind speed measurement assembly according to claim 1, wherein the measurement unit comprises: the device comprises an actual measuring unit and a comparison measuring unit, wherein the comparison measuring unit is matched with the actual measuring unit for use, and the comparison measuring unit is arranged at a windless position.
7. The wind speed measurement assembly of claim 6, wherein the control unit determines the wind speed variation of the air supply assembly based on a voltage value variation of the actual measurement unit compared to the comparison measurement unit per unit time.
8. A gas combustion device, characterized in that it comprises an anemometry assembly according to any of claims 1-7.
9. A control method of a gas combustion apparatus, characterized in that the gas combustion apparatus comprises:
the air supply assembly is used for conveying combustion-supporting gas;
the measuring unit is used for measuring the wind speed and at least comprises an actual measuring unit which is arranged at an air inlet or an air outlet of the air supply assembly;
the control method comprises the following steps:
step S1, determining the wind speed change of the air supply assembly based on the voltage value change of the measuring unit in unit time;
step S2, when the measuring unit detects that the wind speed of the air inlet or the air outlet is reduced, the air supply quantity of the air supply assembly is increased until the wind speed is restored to the target wind speed value; and when the measuring unit detects that the wind speed of the air inlet or the air outlet is increased, reducing the air supply quantity of the air supply assembly until the wind speed is restored to the target wind speed value.
10. The control method of a gas combustion apparatus as set forth in claim 9, wherein the gas combustion apparatus comprises: a control unit that determines a resistance value of the measurement unit based on a voltage value of the measurement unit under a constant current.
11. The control method of a gas combustion facility according to claim 10, wherein the control unit determines a change in the wind speed of the air supply assembly based on a change in a voltage value of the actual measurement unit per unit time in a windy state as compared to a windless state.
12. The control method of a gas combustion facility according to claim 10, wherein the control unit determines the change in the wind speed of the air supply assembly based on how fast the change in the actual measured unit voltage value per unit time is.
13. The control method of a gas combustion apparatus as set forth in claim 10, wherein the measuring unit further includes: and the control unit determines the wind speed change of the air supply assembly based on the voltage value change of the actual measurement unit compared with the comparison measurement unit in unit time.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921674133 | 2019-09-30 | ||
| CN201910943633 | 2019-09-30 | ||
| CN2019216741331 | 2019-09-30 | ||
| CN2019109436339 | 2019-09-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112577200A true CN112577200A (en) | 2021-03-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921868389.6U Active CN211695357U (en) | 2019-09-30 | 2019-10-31 | Gas combustion equipment |
| CN201921868297.8U Active CN211601074U (en) | 2019-09-30 | 2019-10-31 | Water heating device |
| CN201911063106.5A Pending CN112577200A (en) | 2019-09-30 | 2019-10-31 | Wind speed measuring assembly, gas combustion equipment and control method of gas combustion equipment |
| CN201911063071.5A Pending CN112577199A (en) | 2019-09-30 | 2019-10-31 | Water heating device |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921868389.6U Active CN211695357U (en) | 2019-09-30 | 2019-10-31 | Gas combustion equipment |
| CN201921868297.8U Active CN211601074U (en) | 2019-09-30 | 2019-10-31 | Water heating device |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05157759A (en) * | 1991-12-06 | 1993-06-25 | Zexel Corp | Detecting method for wind velocity by use of thermistor |
| JP2000137037A (en) * | 1998-08-24 | 2000-05-16 | Kurabe Ind Co Ltd | Thermister air-speed detector |
| JP2011107057A (en) * | 2009-11-20 | 2011-06-02 | Fujitsu Ltd | Wind direction/wind velocity sensor |
| CN103217549A (en) * | 2013-03-29 | 2013-07-24 | 北京遥测技术研究所 | Thermistor type air velocity transducer with temperature compensation |
| CN107741507A (en) * | 2017-12-12 | 2018-02-27 | 湖南普信工程技术有限公司 | A kind of NTC airspeedometers |
-
2019
- 2019-10-31 CN CN201921868389.6U patent/CN211695357U/en active Active
- 2019-10-31 CN CN201921868297.8U patent/CN211601074U/en active Active
- 2019-10-31 CN CN201911063106.5A patent/CN112577200A/en active Pending
- 2019-10-31 CN CN201911063071.5A patent/CN112577199A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05157759A (en) * | 1991-12-06 | 1993-06-25 | Zexel Corp | Detecting method for wind velocity by use of thermistor |
| JP2000137037A (en) * | 1998-08-24 | 2000-05-16 | Kurabe Ind Co Ltd | Thermister air-speed detector |
| JP2011107057A (en) * | 2009-11-20 | 2011-06-02 | Fujitsu Ltd | Wind direction/wind velocity sensor |
| CN103217549A (en) * | 2013-03-29 | 2013-07-24 | 北京遥测技术研究所 | Thermistor type air velocity transducer with temperature compensation |
| CN107741507A (en) * | 2017-12-12 | 2018-02-27 | 湖南普信工程技术有限公司 | A kind of NTC airspeedometers |
Also Published As
| Publication number | Publication date |
|---|---|
| CN211695357U (en) | 2020-10-16 |
| CN211601074U (en) | 2020-09-29 |
| CN112577199A (en) | 2021-03-30 |
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