CN211601074U - Water heating device - Google Patents
Water heating device Download PDFInfo
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- CN211601074U CN211601074U CN201921868297.8U CN201921868297U CN211601074U CN 211601074 U CN211601074 U CN 211601074U CN 201921868297 U CN201921868297 U CN 201921868297U CN 211601074 U CN211601074 U CN 211601074U
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- combustion
- measuring unit
- gas
- water heating
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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
Abstract
The utility model discloses a water heating equipment, water heating equipment includes: a body part having a combustion part that generates heat by combusting a mixed gas of a combustion-supporting gas and a combustible gas; a measurement unit for measuring combustion-supporting gas, the measurement unit being disposed within the body portion and having a resistance element that changes with a change in temperature; and a control unit in communication with the measurement unit. According to the utility model discloses hot water equipment has advantages such as combustion effect is good, heating efficiency height.
Description
Cross Reference to Related Applications
The application claims priority of application date of 2019, 9 and 30, application number of 201910943633.9 and patent application name of "hot water equipment", and priority of application date of 2019, 9 and 30, application number of 201921674133.1 and patent application name of "hot water equipment".
Technical Field
The utility model relates to an electrical apparatus makes technical field, particularly, relates to a hot water equipment.
Background
In related art, a water heating device such as a gas water heater calculates the required combustible gas consumption according to the required water outlet temperature in the working process, controls the current of a fan according to the combustible gas consumption, and controls the rotating speed of the fan through the current of the fan, so that the air inlet amount of combustion-supporting gas is controlled, and the ratio of the combustion-supporting gas to the combustible gas is adjusted conveniently. However, the fan current is easily affected by the external environment to generate fluctuation, the accuracy of the mode of controlling the intake of the combustion-supporting gas through the fan current is low, and the intake of the combustion-supporting gas is difficult to control accurately, so that the air and the fuel gas are difficult to have accurate proportion, the combustion effect of combusting the mixed gas of the combustion-supporting gas and the combustible gas is influenced, and the working performance of the water heating equipment is influenced.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a hot water equipment, this hot water equipment have advantages such as combustion effect is good, heating efficiency height.
To achieve the above object, according to an embodiment of the present invention, a water heating apparatus is provided, which includes: a body part having a combustion part that generates heat by combusting a mixed gas of a combustion-supporting gas and a combustible gas; a measurement unit for measuring combustion-supporting gas, the measurement unit being disposed within the body portion and having a resistance element that changes with a change in temperature; and a control unit in communication with the measurement unit.
According to the utility model discloses hot water equipment has advantages such as combustion effect is good, heating efficiency height.
In addition, the water heating apparatus according to the above embodiment of the present invention may further have the following additional technical features:
according to some embodiments of the invention, the water heating apparatus further comprises: and the air supply component is arranged on the body part and used for conveying combustion-supporting gas, and the control unit is connected with the air supply component and used for controlling the air supply quantity of the air supply component.
According to some embodiments of the invention, the measuring unit is arranged in the air supply part.
According to some embodiments of the invention, the measuring unit is located below the air supply inlet of the air supply part or the combustion part inlet of the combustion part.
According to some embodiments of the invention, a combustion supporting gas flow path is formed in the body portion, and at least a part of the measuring unit is provided on the combustion supporting gas flow path.
According to some embodiments of the invention, the measuring unit is a thermistor.
According to some embodiments of the present invention, the control unit controls the amount of air input of the combustible gas based on a change in the magnitude of the resistance value of the measuring unit in unit time under constant current.
According to some embodiments of the invention, the measuring unit comprises: the device comprises an actual measuring unit and a comparison measuring unit matched with the actual measuring unit, wherein the actual measuring unit and the comparison measuring unit are communicated with a control unit, and the control unit controls the air inflow of the combustible gas based on the resistance value change of the actual measuring unit compared with the comparison measuring unit in unit time.
According to other embodiments of the present invention, the control unit controls the amount of intake of the combustible gas based on how fast the resistance value of the measuring unit changes during the period from the first constant current to the second constant current.
According to some embodiments of the utility model, the hot water equipment still includes the gas proportional valve that is used for controlling the combustible gas air input, the gas proportional valve configuration is in this internal, the gas proportional valve with the control unit electricity is connected.
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
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a partial structural schematic view of a water heating apparatus according to an embodiment of the present invention.
Fig. 2 is a partial structural schematic view of a water heating apparatus according to another embodiment of the present invention.
Fig. 3 is a partial structural schematic view of a water heating apparatus according to another embodiment of the present invention.
Fig. 4 is a partial structural schematic view of a water heating apparatus according to another embodiment of the present invention.
Fig. 5 is a partial structural schematic view of a water heating apparatus according to another embodiment of the present invention.
Fig. 6 is a partial structural schematic view of a measuring unit of a water heating apparatus according to another embodiment of the present invention.
Fig. 7 is a graph of the relationship between the gas quantity and the air quantity of the water heater according to the embodiment of the invention.
Fig. 8 is a graph of the relationship between the air volume and the rotation speed of the water heating device according to the embodiment of the present invention.
Reference numerals: the hot water apparatus 1, the main body 100, the combustion section 110, the combustion section inlet 111, the measurement unit 200, the actual measurement unit 210, the comparison measurement unit 220, the air blowing member 300, and the air blowing inlet 310.
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 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 exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.
A water heating apparatus 1 according to an embodiment of the present invention is described below with reference to the accompanying drawings.
As shown in fig. 1 to 8, a water heating apparatus 1 according to an embodiment of the present invention includes a body part 100, a measuring unit 200, and a control unit.
The main body 100 has a combustion portion 110, and the combustion portion 110 generates heat by burning a mixed gas of a combustion-supporting gas and a combustible gas. The measurement unit 200 is used to measure the combustion-supporting gas, the measurement unit 200 is disposed in the body part 100, and the measurement unit 200 has a resistance element that changes with a change in temperature. The control unit communicates with the measurement unit 200.
The operation of the water heating apparatus 1 according to the embodiment of the present invention will be described with reference to the accompanying drawings.
When hot water needs to be prepared, the hot water equipment 1 calculates the theoretical air inflow of combustible gas and the theoretical air inflow of combustion-supporting gas through the control unit, the resistance element is cooled when the combustion-supporting gas flows through the measuring unit 200, so that the resistance value of the resistance element changes, the control unit calculates the actual air inflow of the combustion-supporting gas according to the detection value of the measuring unit 200, compares the actual air inflow of the combustion-supporting gas with the theoretical air inflow of the combustion-supporting gas, and adjusts the actual air inflow of the combustion-supporting gas, so that the combustible gas and the combustion-supporting gas achieve a proper ratio.
According to the embodiment of the present invention, the water heating apparatus 1 is provided with the measuring unit 200 and the control unit, so that the measuring unit 200 has the resistance element which changes with the temperature change. Therefore, the actual air inflow of the combustion-supporting gas flowing through the resistance element can be calculated by utilizing the resistance value change of the resistance element, so that the proportional relation between the consumption of the combustible gas and the consumption of the combustion-supporting gas can be accurately obtained.
Compared with the mode of controlling the air inlet amount of the combustion-supporting gas by utilizing the fan current in the related technology, because the fan current is easy to fluctuate, the reliability of the mode of judging the air inlet amount of the combustion-supporting gas by the current value is poor, the hot water device 1 can make the combustion-supporting gas and the combustible gas reach a proper ratio by utilizing the measuring unit 200 to calculate the air inlet amount of the combustion-supporting gas, so that the mixed gas of the combustible gas and the combustion-supporting gas is fully combusted and stably combusted, the hot water device 1 is convenient to be in a good combustion working condition, the heating effect of the hot water device 1 is ensured, the stability and the reliability of hot water outlet prepared by the hot water device 1 are improved.
Meanwhile, the emission of harmful gases in the tail gas of the water heating equipment 1 can be reduced, the environmental protection performance of the water heating equipment 1 is improved, the functionality and the applicability of the water heating equipment 1 are improved, and the overall comprehensive performance of the water heating equipment 1 is improved.
Therefore, according to the utility model discloses hot water equipment 1 has advantages such as combustion effect is good, heating efficiency height.
A water heating apparatus 1 according to an embodiment of the present invention is described below with reference to the accompanying drawings.
In some embodiments of the present invention, as shown in fig. 1 to 8, a water heating apparatus 1 according to an embodiment of the present invention includes a body part 100, a measurement unit 200, and a control unit.
Specifically, as shown in fig. 1, the water heating apparatus 1 further includes an air supply member 300, the air supply member 300 is mounted to the body portion 100, the air supply member 300 is used for supplying combustion-supporting gas, and the control unit is connected to the air supply member 300 and is used for controlling an air supply amount of the air supply member 300. Therefore, the control unit can control the working state of the air supply component 300 according to the detection value of the measurement unit 200, so as to control the air inlet amount of the combustion-supporting gas, further facilitate the hot water device 1 to obtain the accurate ratio of the combustion-supporting gas to the combustible gas, facilitate the hot water device 1 to prepare hot water and improve the working performance of the hot water device 1.
More specifically, as shown in fig. 1, the measurement unit 200 is provided to the air blowing part 300. Therefore, the measuring unit 200 can measure the air quantity of the combustion-supporting gas conveniently, and the measuring accuracy of the measuring unit 200 on the combustion-supporting gas flowing through the air supply part 300 can be improved conveniently.
Further, as shown in fig. 1 to 5, the measurement unit 200 is located at the blowing air inlet 310 of the blowing member 300 or below the combustion part 110 or at the combustion part inlet 111 of the combustion part 110 (the up-down direction is shown by an arrow a in fig. 1 to 5). Therefore, the measuring unit 200 is convenient to contact with the combustion-supporting gas, the measuring unit 200 is further convenient to measure the intake of the combustion-supporting gas, and the accuracy and reliability of the measurement of the intake of the combustion-supporting gas by the measuring unit 200 are improved.
Of course, the measuring unit 200 may be located at the air outlet of the air supply part 300.
In particular, the water heating device 1 further comprises a smoke evacuation means, to which the measuring unit 200 is arranged.
Alternatively, a combustion-supporting gas flow path is formed in the body part 100, and at least a portion of the measuring unit 200 is provided on the combustion-supporting gas flow path. This facilitates the measurement of the combustion-supporting gas on the combustion-supporting gas flow path by the measurement unit 200, and further facilitates the calculation of the actual intake rate of the combustion-supporting gas using the detection value of the measurement unit 200.
Further, the measuring unit 200 is provided in plurality and at intervals, and at least a part of each measuring unit 200 is provided on the combustion-supporting gas flow path. Therefore, the combustion-supporting gas can be measured by using the plurality of measuring units 200, and the measuring accuracy and stability of the measuring units 200 are improved.
According to an embodiment of the present invention, the measuring unit 200 is disposed at a position close to the combustion part 110 on the combustion-supporting gas flow path. Further, the measuring unit 200 is disposed at an air inlet of the combustion part 110.
It should be understood here that the "inlet port of the combustion section 110" refers to an inlet port of a mixed gas of a combustible gas and a combustion-supporting gas.
Specifically, the measurement unit 200 is a thermistor. Because the thermistor has a simple structure and strong anti-interference capability, the measurement sensitivity and accuracy of the measurement unit 200 to the combustion-supporting gas are improved conveniently, and the measurement reliability and accuracy of the measurement unit 200 to the combustion-supporting gas are further improved conveniently.
Alternatively, the control unit controls the amount of intake of the combustible gas based on the change in the magnitude of the resistance value per unit time of the measurement unit 200 at a constant current. Therefore, the heat dissipation capacity of the measuring unit 200 can be calculated by using the change of the resistance value of the measuring unit 200 under the constant current, so that the actual intake volume of the combustion-supporting gas is calculated, and the detection accuracy of the hot water device 1 on the intake volume of the combustion-supporting gas is improved.
According to the utility model discloses an embodiment, as shown in fig. 6, measuring unit 200 includes actual measuring unit 210 and the comparison measuring unit 220 who matches with actual measuring unit 210, actual measuring unit 210 with compare measuring unit 220 all with the control unit carries out the communication, the control unit compares the resistance value change of comparing measuring unit 220 and controls combustible gas's intake air volume based on actual measuring unit 210 in the unit interval. Therefore, the heat dissipation capacity of the actual measuring unit 210 can be calculated through the difference value of the resistance values between the actual measuring unit 210 and the comparison measuring unit 220 under the constant current, so that the intake volume of the combustion-supporting gas is calculated, and the measurement accuracy of the ratio of the combustible gas to the combustion-supporting gas is further improved.
According to the utility model discloses a further embodiment, as shown in fig. 6, measuring unit 200 includes actual measurement unit 210 and the comparison measuring unit 220 who matches with actual measurement unit 210, actual measurement unit 210 with compare measuring unit 220 all with the control unit carries out the communication, the control unit compares the resistance value change of comparing measuring unit 220 and controls combustion-supporting gas's intake based on actual measurement unit 210 in the unit interval. Therefore, the heat dissipation capacity of the actual measurement unit 210 can be calculated through the difference value of the resistance values between the actual measurement unit 210 and the comparison measurement unit 220 under the constant current, so that the intake rate of the combustion-supporting gas can be calculated, and the hot water device 1 can further control the intake rate of the combustion-supporting gas.
Specifically, the actual measurement unit 210 and the comparison measurement unit 220 may be two identical thermistors, input currents of the two thermistors are equal, the actual measurement unit 210 is disposed on a flow path of the combustion-supporting gas, the comparison measurement unit 220 is disposed in a windless environment, and the control unit controls a rotation speed of the fan unit 300 based on a change in a resistance value of the actual measurement unit 210 compared to the comparison measurement unit 220 per unit time, thereby controlling an intake amount of the combustion-supporting gas.
According to another embodiment of the present invention, the control unit controls the amount of intake of the combustible gas based on how fast the resistance value of the measuring unit 200 changes during the period from the first constant current to the second constant current. This facilitates simplifying the structure of the measuring unit 200, reducing the overall size of the measuring unit 200, and reducing the production cost of the measuring unit 200.
According to another embodiment of the present invention, the control unit controls the amount of intake of the combustion-supporting gas based on how fast the resistance value of the measuring unit 200 changes during the period from the first constant current to the second constant current. This facilitates the simplification of the structure of the measuring unit 200, and the reduction of the cost of the measuring unit 200, thereby reducing the production cost of the hot water apparatus 1.
Specifically, the measuring unit 200 may be a thermistor, the measuring unit 200 is disposed on the combustion-supporting gas flow path, and the control unit controls the rotation speed of the blower part 300 based on how fast the resistance value of the measuring unit 200 changes during the period from the first constant current to the second constant current, thereby controlling the intake amount of the combustion-supporting gas.
Specifically, the water heating apparatus 1 further includes a gas proportional valve for controlling an intake amount of the combustible gas, the gas proportional valve being disposed in the body portion 100, the gas proportional valve being electrically connected to the control unit. Therefore, the gas proportional valve can be used for controlling the air input of the combustible gas, the air input of the combustible gas and the air input of the combustion-supporting gas can be further conveniently and accurately controlled, the combustion-supporting gas and the combustible gas can be accurately matched, the mixed gas of the combustible gas and the combustion-supporting gas can be fully combusted, and the combustion efficiency of the combustible gas is improved.
According to a specific embodiment of the present invention, the air supply part 300 includes a fan, the fan is located below the combustion part 110, and the measurement unit 200 is located at an air inlet of the fan.
According to another specific embodiment of the present invention, the air supply part 300 includes a fan located above the combustion part 110, and the measuring unit 200 is located at an air inlet of the combustion part 110 or below the combustion part 110. Specifically, a first intake area for combustion-supporting gas is formed at the intake of the combustion part 110, a second intake area for combustion-supporting gas is formed below the combustion part 110, and the measuring unit 200 may be located in the first intake area or the second intake area.
According to another specific embodiment of the present invention, the measuring unit 200 is located at the air intake of the combustion part 110 or below the combustion part 110. Specifically, an air intake area is formed below the combustion part 110, and the measurement unit 200 is located in the air intake area.
According to some embodiments of the present invention, the hot water apparatus 1 includes the combustion portion 110, the measuring unit 200, the air supply component 300, the control unit and the gas proportional valve, the measuring unit 200, the air supply component 300 and the gas proportional valve respectively with the control unit communication, the internal combustion-supporting gas flow path that is formed in the body portion 100, at least a part of the measuring unit 200 is established on the combustion-supporting gas flow path, the measuring unit 200 includes the actual measuring unit 210 and the comparison measuring unit 220. In the production stage of the hot water apparatus 1, the corresponding relationship between the resistance value change of the measuring unit 200 and the theoretical intake rate of the combustion-supporting gas can be obtained through experiments, and the corresponding relationship is written into the control unit. When the water heating device 1 works, the control unit can be used for controlling the working state of the gas proportional valve so as to control the air inflow of the combustible gas, and the control unit is used for controlling the rotating speed of the air supply component 300 so as to control the air intake of the combustion-supporting gas. Meanwhile, constant current can be respectively led into the actual measurement unit 210 and the comparison measurement unit 220, the actual measurement unit 210 and the comparison measurement unit 220 can generate certain heat under certain current, so that the actual measurement unit 210 and the comparison measurement unit 220 have certain resistance values, the actual measurement unit 210 and the comparison measurement unit 220 have different resistance values due to the fact that combustion-supporting gas can carry out heat dissipation and cooling on the actual measurement unit 210 when flowing through the measurement unit 200, the control unit can calculate the actual intake air quantity of the current combustion-supporting gas according to the difference value of the resistance values of the actual measurement unit 210 and the comparison measurement unit 220, and then the intake air quantity of the combustible gas is adjusted by comparing the actual intake air quantity with the theoretical intake air quantity, so that the combustible gas and the combustion-supporting gas achieve a proper proportional relation.
According to other specific embodiments of the present invention, the hot water apparatus 1 includes the combustion portion 110, the measuring unit 200, the air supply component 300, the control unit and the gas proportional valve, the measuring unit 200, the air supply component 300 and the gas proportional valve respectively with the control unit communication, the internal combustion-supporting gas flow path that is formed in the body portion 100, at least a part of the measuring unit 200 is established on the combustion-supporting gas flow path, the measuring unit 200 includes the actual measuring unit 210 and the comparison measuring unit 220. In the production stage of the hot water apparatus 1, the corresponding relationship between the resistance value change of the measuring unit 200 and the theoretical intake rate of the combustion-supporting gas can be obtained through experiments, and the corresponding relationship is written into the control unit. When the water heating device 1 works, the control unit can be used for controlling the working state of the gas proportional valve so as to control the air inflow of the combustible gas, and the control unit is used for controlling the rotating speed of the air supply component 300 so as to control the air intake of the combustion-supporting gas. Meanwhile, constant current can be respectively introduced into the actual measurement unit 210 and the comparison measurement unit 220, the actual measurement unit 210 and the comparison measurement unit 220 can generate certain heat under certain current, so that the actual measurement unit 210 and the comparison measurement unit 220 have certain resistance values, the actual measurement unit 210 and the comparison measurement unit 220 have different resistance values due to the fact that combustion-supporting gas can carry out heat dissipation and cooling on the actual measurement unit 210 when flowing through the measurement unit 200, the control unit can calculate the actual intake of the current combustion-supporting gas according to the difference value between the resistance value of the actual measurement unit 210 and the resistance value of the comparison measurement unit 220, and when the actual intake is not equal to the theoretical intake, the rotating speed of the air supply component 300 is adjusted so that the actual intake is equal to the theoretical intake. For example, when the actual intake air amount is smaller than the theoretical intake air amount, it is determined that the smoke exhausting member or the heat exchanger is clogged or the external wind pressure resistance is increased, and the number of revolutions of the air supplying member 300 can be increased to maintain the stability of the intake air amount of the combustion-supporting gas.
In some embodiments of the invention, the resistance element of the strong drum type gas water heater is arranged at the air suction opening of the fan, the air outlet of the fan and the smoke exhaust part. The resistance element of the strong pumping type gas water heater is arranged near the primary air suction inlet and the lower part of the burner.
In some embodiments, a measuring unit consisting of a thermoelectric element is installed on the gas water heater, the air speed information is acquired to control the air inlet quantity of the combustible gas, and the thermoelectric element with the increased temperature is cooled after encountering air.
In other embodiments, a measuring unit consisting of a thermal resistance element is installed on the gas water heater, and the air inlet quantity of the combustible gas is controlled by acquiring air speed information.
In some embodiments, the actual thermal resistance element installed at the position where the wind speed is measured is electrified to heat itself, and the resistance value is measured. The current is also applied to the comparison thermal resistance element installed at the windless part, and the resistance value is measured. When wind blows, the heat is dissipated, and the resistance value of the two thermal resistance elements is different according to the difference of the heat dissipation degree. By using the principle, the air speed of the air supply part of the gas water heater is detected to obtain the air volume, so that the gas volume is controlled.
In other embodiments, only one thermal resistance element is used, the thermal resistance element is arranged at the position for measuring the wind speed in the gas water heater, the current value A is switched on, the resistance value is measured, and the action is continued. The resistance value was measured after the current value was decreased to B. The wind speed is then measured by measuring the time from a to B.
Specifically, when the device is used for controlling the air intake quantity of the combustible gas, on the gas water heater, the corresponding relation between the air speed and the gas quantity is written into a microprocessor of the control unit in advance and memorized, and then the corresponding gas quantity is provided according to the air speed obtained in the combustion process.
Specifically, when the air inlet quantity of the combustion-supporting gas is controlled, the corresponding relation between the preset number of revolutions of the fan and the air speed is written into the microprocessor of the control unit and memorized, and once the air quantity is reduced by a certain quantity in the actual combustion process of the water heater, the number of revolutions of the fan is increased to maintain the air quantity.
In addition, when the air volume is reduced under the condition of the same revolution, the large fault is judged to be generated, and the safe action is started to stop the combustion.
In other embodiments of the present invention, the combustion state is controlled based on temperature. The air supply temperature is detected, and the air volume is increased when the temperature is high. When the supply air temperature increases, the density of the air decreases, and combustion deteriorates when the air volume is constant. The wind speed is detected by using a thermal resistance element, and the temperature of the air is also detected, and the rotational speed of the fan required for increasing the temperature of the air is increased according to the previously memorized relationship of the wind speed and the number of revolutions.
When the ignition rotation number is reduced when the temperature is low and the water heater is ignited in a low temperature state, the balance between the air and the gas in the combustion chamber changes as compared with the normal room temperature state. This change causes problems such as misfire and combustion vibration. The temperature of air is detected at the same time as the wind speed is detected by using the thermal resistance element, and the number of rotations of the fan is adjusted when the temperature of air is low according to the previously memorized relationship of wind speed-number of rotations.
Specifically, the water heating apparatus 1 may be a gas water heater or a gas wall-hanging stove.
The operation of the water heating apparatus 1 according to the embodiment of the present invention will be described in detail with reference to the accompanying drawings.
When hot water needs to be prepared, the control unit calculates the theoretical air inflow of combustible gas and the theoretical air intake of combustion-supporting gas through the hot water outlet temperature, controls the air inflow of the combustible gas by controlling the working state of the gas proportional valve, and controls the air intake of the combustion-supporting gas by controlling the rotating speed of the air supply component 300. Meanwhile, constant current is respectively introduced into the actual measurement unit 210 and the comparison measurement unit 220, when the combustion-supporting gas flows through the measurement unit 200, the actual measurement unit 210 is cooled, the difference value of the resistance values of the actual measurement unit 210 and the comparison measurement unit 220 is measured, the control unit calculates the actual air intake amount of the combustion-supporting gas according to the difference value, then the actual air intake amount of the combustion-supporting gas is compared with the theoretical air intake amount, and the air intake amount of the combustion-supporting gas is adjusted by adjusting the rotating speed of the air supply component 300, so that the proper ratio of the combustible gas to the combustion-supporting gas is achieved.
Other constructions and operations of the water heating apparatus 1 according to the embodiment of the present invention are known to those skilled in the art and will not be described in detail herein.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, 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 two or more unless otherwise specified. In the description of the present invention, the first feature "on" or "under" the second feature may include the first and second features being in direct contact, and may also include the first and second features being in contact with each other not directly but through another feature therebetween.
In the description of the invention, the first feature being "on", "above" and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like 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 present invention. In this specification, the schematic representations of the terms used above do not necessarily 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.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. A water heating apparatus, comprising:
a body part having a combustion part that generates heat by combusting a mixed gas of a combustion-supporting gas and a combustible gas;
a measurement unit for measuring combustion-supporting gas, the measurement unit being disposed within the body portion and having a resistance element that changes with a change in temperature; and
a control unit in communication with the measurement unit.
2. The water heating apparatus according to claim 1, further comprising: and the air supply component is arranged on the body part and used for conveying combustion-supporting gas, and the control unit is connected with the air supply component and used for controlling the air supply quantity of the air supply component.
3. The water heating apparatus according to claim 2, wherein the measuring unit is provided to the air blowing part.
4. The water heating apparatus according to claim 3, wherein the measuring unit is located at a supply air inlet of the air supply member or below a combustion portion or at a combustion portion air inlet of the combustion portion.
5. The water heating apparatus according to claim 1, wherein a combustion supporting gas flow path is formed in the body portion, and at least a portion of the measuring unit is provided on the combustion supporting gas flow path.
6. The water heating apparatus according to claim 1, wherein the measuring unit is a thermistor.
7. The water heating apparatus according to claim 1, wherein the control unit controls an intake amount of the combustible gas based on a change in magnitude of a resistance value per unit time of the measuring unit under a constant current.
8. The water heating apparatus according to claim 7, wherein the measuring unit comprises: the device comprises an actual measuring unit and a comparison measuring unit matched with the actual measuring unit, wherein the actual measuring unit and the comparison measuring unit are communicated with a control unit, and the control unit controls the air inflow of the combustible gas based on the resistance value change of the actual measuring unit compared with the comparison measuring unit in unit time.
9. The water heating apparatus according to claim 1, wherein the control unit controls an intake amount of the combustible gas based on how fast a resistance value of the measurement unit changes during a period from a first constant current to a second constant current.
10. The water heating apparatus according to claim 1, further comprising a gas proportional valve for controlling an intake amount of a combustible gas, the gas proportional valve being disposed in the body portion, the gas proportional valve being electrically connected to the control unit.
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| CN2019109436339 | 2019-09-30 | ||
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| CN201921868297.8U Active CN211601074U (en) | 2019-09-30 | 2019-10-31 | Water heating device |
| CN201911063071.5A Pending CN112577199A (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 |
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| 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 |
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| 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 |
| JP5568961B2 (en) * | 2009-11-20 | 2014-08-13 | 富士通株式会社 | Wind direction / 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 |
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| CN112577200A (en) | 2021-03-30 |
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