CN115614999A - Intelligent wide-heat-value gas equipment and control method thereof - Google Patents
Intelligent wide-heat-value gas equipment and control method thereof Download PDFInfo
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- CN115614999A CN115614999A CN202110795846.9A CN202110795846A CN115614999A CN 115614999 A CN115614999 A CN 115614999A CN 202110795846 A CN202110795846 A CN 202110795846A CN 115614999 A CN115614999 A CN 115614999A
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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
- F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
- F24H1/0027—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters using fluid fuel
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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
- F24H9/0005—Details for water heaters
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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
- 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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- Combustion & Propulsion (AREA)
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- General Engineering & Computer Science (AREA)
- Regulation And Control Of Combustion (AREA)
Abstract
An intelligent wide heating value gas-fired appliance comprising: a combustion device, an igniter, a gas valve, a blower, a detecting device and a control device, wherein the control method comprises: the control device is operated in a detection mode, and controls the igniter to ignite and controls the gas valve and the blower to provide a fixed gas flow and a fixed air quantity to the combustion device; after the flame is ignited, the control device judges the combustion state detected by the detection device, and if the combustion state accords with the first state, the control device controls the gas valve and the air blower according to first control data corresponding to first natural gas; if the second state is met, the control device controls the gas valve and the blower according to second control data corresponding to second natural gas. Therefore, the natural gas with different heat values is suitable.
Description
Technical Field
The invention relates to a gas appliance; in particular to an intelligent wide-heat-value gas device and a control method thereof.
Background
The gas equipment is connected with a gas supply pipe, and used natural gas is delivered to a user end by a gas company through a delivery pipeline. Natural gas will vary in its calorific value depending on the place of exploitation. In order to avoid the influence of different calorific values on the combustion efficiency and safety of gas equipment at a user end, a gas company usually supplies only natural gas with the same calorific value to the user end on the same transmission pipeline.
When the calorific value of the natural gas purchased by the gas company varies, for example, the natural gas originally having a low calorific value is purchased, and the natural gas having a high calorific value is purchased, if the natural gas having a high calorific value is directly injected into the transportation pipeline, the gas of the gas equipment of the user may be incompletely combusted, and there is a risk of excessive carbon monoxide. On the contrary, if the natural gas with high calorific value is injected into the conveying pipeline directly, the situation that the combustion efficiency of the gas equipment of the user is not good will be caused.
Disclosure of Invention
In view of this, the present invention provides an intelligent wide-calorific-value gas facility and a control method thereof, which are applicable to gas of natural gas with different calorific values.
In order to achieve the above object, the present invention provides an intelligent wide-heating-value gas appliance, which is used to connect a gas supply pipe, wherein the gas supply pipe is used to input gas, the gas is one of a first natural gas and a second natural gas, and the heating values of the first natural gas and the second natural gas are different; the intelligent wide-heating-value gas equipment comprises: the device comprises a combustion device, an igniter, a gas valve, a blower, a detection device and a control device, wherein the combustion device is used for combusting gas to generate flame; the igniter is arranged beside the combustion device and is used for igniting the gas output by the combustion device; the gas valve is communicated with the gas supply pipe and the combustion device, and is controlled to change the flow of gas supplied to the combustion device; the blower is controlled to vary the amount of air supplied to the combustion device; the detecting device is used for detecting the combustion state of the flame of the combustion device; the control device is electrically connected with the gas valve, the blower and the detection device, and is operated in a detection mode, in the detection mode, the control device controls the igniter to ignite and controls the gas valve and the blower to provide a fixed gas flow and a fixed air quantity to the combustion device; after the flame is ignited, the control device judges that the combustion state detected by the detection device accords with a first state or a second state, if the combustion state accords with the first state, the control device is operated in a first operation mode, and the control device controls the gas valve and the air blower according to first control data corresponding to the first natural gas, so that the combustion device is suitable for combusting the gas of the first natural gas; if the second state is met, the control device operates in a second operation mode, and the control device controls the gas valve and the blower according to second control data corresponding to the second natural gas, so that the combustion device is suitable for combusting gas of the second natural gas.
The invention provides a control method of intelligent wide-heat-value gas equipment, which is executed by a control device and comprises the following steps:
the control device is operated in a detection mode, and controls the igniter to ignite and controls the gas valve and the blower to provide a fixed gas flow and a fixed air amount to the combustion device;
after the flame is ignited, the control device judges that the combustion state detected by the detection device conforms to a first state or a second state, wherein:
if the first state is met, the control device operates in a first operation mode, and the control device controls the gas valve and the blower according to first control data corresponding to the first natural gas, so that the combustion device is suitable for combusting gas of the first natural gas;
if the second state is met, the control device operates in a second operation mode, and the control device controls the gas valve and the blower according to second control data corresponding to the second natural gas, so that the combustion device is suitable for combusting gas of the second natural gas.
The present invention has the effect that the control device can determine that the gas supplied and transmitted by the gas supply pipe is the first natural gas or the second natural gas according to the flame state, and set the gas to be the corresponding first operation mode or the second operation mode so as to be suitable for the gas for burning the first natural gas or the second natural gas with different heat values.
Drawings
Fig. 1 is a schematic view of an intelligent wide heating value gas plant in accordance with a first preferred embodiment of the present invention.
Fig. 2 is a flowchart of a control method of the intelligent wide heating value gas facility according to the first preferred embodiment of the present invention.
Fig. 3 is a schematic view of an intelligent wide heating value gas plant in accordance with a second preferred embodiment of the present invention.
Fig. 4 is a schematic view of an intelligent wide heating value gas facility according to a third preferred embodiment of the present invention.
Fig. 5 is a schematic view of an intelligent wide heating value gas plant in accordance with a fourth preferred embodiment of the present invention.
Fig. 6 is a schematic view of an intelligent wide heating value gas plant in accordance with a fifth preferred embodiment of the present invention.
Fig. 7 is a schematic view of an intelligent wide heating value gas plant in accordance with a sixth preferred embodiment of the present invention.
Fig. 8 is a schematic view of an intelligent wide heating value gas plant in accordance with a seventh preferred embodiment of the present invention.
Detailed Description
In order to more clearly illustrate the present invention, preferred embodiments are described in detail below with reference to the accompanying drawings. Referring to fig. 1, an intelligent wide-heating-value gas appliance 1 according to a first preferred embodiment of the present invention is connected to a gas supply pipe P for inputting gas, which is natural gas and is supplied by a gas company. In the embodiment, the heat value of the first natural gas is smaller than that of the second natural gas, and the heat value of the first natural gas is 8900Kcal/M 3 For example, the heating value of the second natural gas is 9700Kcal/M 3 For example, but not limited thereto. The intelligent wide-calorific-value gas equipment 1 comprises a combustion device 10, an igniter 12, a gas valve 14, a blower 16, a detection device 18 and a control device 20.
The combustion apparatus 10 is used for burning gas to generate flame. The igniter 12 is disposed beside the combustion device 10 for igniting the gas output by the combustion device 10. The igniter 12 is disposed adjacent to the combustion device 10. The igniter 12 is used to generate a spark to ignite the gas to form a flame.
The gas valve 14 communicates the gas supply pipe P with the combustion apparatus 10, and is controlled to vary the flow rate of gas supplied to the combustion apparatus 10. In this embodiment, a gas regulating valve 142 is disposed inside the gas valve 14, and the gas regulating valve 142 is used for regulating the flow of gas flowing to the combustion device. A channel solenoid valve 144 is disposed inside the gas valve 14 for opening or blocking the gas flowing to the combustion device 10.
The blower 16 is used for providing air for supporting combustion of the combustion device 10, and the blower 16 can be controlled to change the rotating speed so as to change the air quantity supplied to the combustion device 10. In this embodiment, the outlet of the blower 16 is connected to a mixer 22, and the mixer 22 is disposed between the gas valve 14 and the combustion device 10. The gas output from the gas valve 14 is mixed with air by the mixer 22 and then output to the combustion apparatus 10.
The detecting device 18 is used for detecting the combustion state of the flame of the combustion apparatus 10, and the detecting device can directly or indirectly detect the combustion state of the flame. The direct detection of the combustion state of the flame may, for example, be in direct contact with the flame or may be spaced apart from the flame by a distance that does not contact the flame. The indirect detection of the combustion state of the flame may be, for example, by detecting the products of the gas combustion or by detecting the characteristics of the substance heated by the flame, so as to obtain the combustion state of the flame. In this embodiment, the detecting device 18 includes a thermocouple 182, and the thermocouple 182 is configured to contact a flame and detect the flame generated by the combustion device 10 and output a corresponding detecting voltage, where the detecting voltage corresponds to a combustion state of the flame of the combustion device 10.
The control device 20 is electrically connected to the gas valve 14, the blower 16 and the detection device 18, and the control device 20 is used for controlling the operations of the gas valve 14 and the blower 16 to change the gas flow and the air quantity supplied to the combustion device 10 and receiving the combustion state detected by the detection device 18. The control device 20 has a memory 202, the memory 202 stores a first control data and a second control data, the first control data corresponds to the first natural gas, and the first control data has a corresponding air quantity proportioning relationship at different gas flow rates, so as to control the gas flow rate supplied by the gas valve and the rotation speed of the blower 16, and obtain a preferred proportioning relationship between the gas and the air quantity of the first natural gas. The second control data corresponds to the second natural gas, and the second control data has a corresponding air quantity proportioning relationship at different gas flow rates, so as to control the gas flow rate supplied and conveyed by the gas valve 14 and the rotating speed of the blower 16, and obtain a preferred proportioning relationship between the gas and the air quantity of the second natural gas. The memory 202 also stores an initial control data for controlling the gas valve 14 to supply a fixed gas flow and controlling the blower 16 to operate at a fixed speed to supply a fixed air amount. In the present embodiment, the initial control data corresponds to the ratio relationship between the gas flow rate and the air amount of the first natural gas, but not limited thereto, since the initial control data corresponds to the first natural gas, if the gas input from the gas supply pipe P is the first natural gas, the combustion apparatus 10 has a preferable combustion efficiency, and the combustion state of the flame at this time can be defined as a first state in advance; if the gas input from the gas supply pipe P is the second natural gas, the combustion efficiency of the combustion apparatus 10 is poor, and the combustion state of the flame at this time can be predefined as a second state. In this embodiment, when the combustion state of the flame is a first state, the combustion efficiency is better, and the detection voltage output by the thermocouple 182 is greater than a predetermined voltage, otherwise, if the detection voltage output by the thermocouple 182 is less than the predetermined voltage, the combustion state of the flame is a second state.
In one embodiment, the initial control data corresponds to a gas flow rate and air amount ratio relationship of the second natural gas. If the gas input from the gas supply pipe P is the first natural gas, the combustion efficiency of the combustion apparatus 10 is poor, and the combustion state of the flame at this time can be predefined as a first state; if the gas input from the gas supply pipe P is the second natural gas, the combustion apparatus 10 has better combustion efficiency, and the combustion state of the flame at this time can be predefined as a second state.
The control device 20 can be operated in a detection mode, a first operation mode, or a second operation mode, wherein the detection mode is used to determine whether the input gas is the first natural gas or the second natural gas. The first operation mode is used to control the gas valve 14 and the blower 16 in accordance with the first control data corresponding to the first natural gas. The second operation mode is to control the gas valve 14 and the blower 16 in accordance with the second control data corresponding to the second natural gas.
In this embodiment, the control device 20 is further connected to an operation interface 24 in a wired or wireless manner, and the operation interface 24 is used for a user to operate to output a detection signal or a start signal to the control device, where the detection signal enables the control device 20 to execute the detection mode, and the start signal enables the control device 20 to operate in the first operation mode or the second operation mode determined in the detection mode. The operation interface 24 may include at least one switch for outputting a detection signal and an activation signal, for example, pressing the switch for several seconds to form the detection signal and pressing the switch for a short time to form the activation signal. In practice, the two switches may include a detection switch and a start switch, the detection switch may be operated by a user to output a detection signal to the control device 20, and the start switch may be operated by the user to output a start signal to the control device 20. In one embodiment, the source of the detection signal may also be provided by an external electronic device through a network.
The control device 20 is configured to execute the control method shown in fig. 2, and the control method comprises the following steps:
in the off state, the control device 20 operates in the detection mode when receiving a detection signal, and in the detection mode, the control device 20 controls the igniter 12 to ignite and controls the gas valve 14 and the blower 16 to provide a fixed gas flow rate and a fixed air amount to the combustion device 10. In this embodiment, the user operates the operation interface 24 to output the detection signal to the control device 20, and in the detection mode, the control device 20 starts the igniter 12 to ignite and controls the gas valve 14 and the blower 16 according to the initial control data to provide a fixed gas flow rate and a fixed air amount to the combustion device 10, so that the gas can be stably combusted to generate a fixed combustion state, and the combustion state is not changed due to the change of the gas flow rate or the air amount.
After the flame is ignited, the detecting device 18 detects the combustion state of the flame of the combustion device 10. The control device 20 determines that the combustion state detected by the detection device 18 matches the first state or the second state. In this embodiment, the control device 20 determines whether the detection voltage output by the thermocouple 182 is greater than the predetermined voltage, and determines whether the first state or the second state is satisfied:
if the detected voltage is greater than the predetermined voltage, it is determined that the combustion state of the flame is in accordance with the first state, which represents that the gas supplied and conveyed by the gas supply pipe P is the first natural gas, at this time, the control device 20 switches to operate in the first operation mode, and in the first operation mode, the control device 20 controls the gas valve 14 and the blower 16 according to the first control data corresponding to the first natural gas, so that the combustion device 10 is adapted to combust the gas of the first natural gas. In other words, in the first operation mode, the air amount and the gas flow rate of the first natural gas have a preferable ratio relationship, so that the combustion apparatus 10 has a better combustion efficiency. And the control device 20 sets the first operating mode to a predetermined operating mode, and the control device 20 subsequently operates in the first operating mode. In other words, after the control device 20 controls the gas valve 14 to block gas and controls the blower 16 to stop operation, and after the control device 20 receives a start signal, the control device 20 operates in a predetermined operation mode (i.e., the first operation mode) to control the igniter 12 to ignite, and the control device 20 controls the gas valve 14 and the blower 16 according to the first control data.
If the detected voltage is less than the predetermined voltage, it is determined that the combustion state of the flame is in the second state, which represents that the gas supplied and transmitted by the gas supply pipe P is the second natural gas, at this time, the control device 20 switches to operate in the second operation mode, and in the second operation mode, the control device 20 controls the gas valve 14 and the blower 16 according to the second control data corresponding to the second natural gas, so that the combustion device 10 is suitable for combusting the gas of the second natural gas. In other words, in the second operation mode, the air amount and the gas flow rate of the second natural gas have a preferable proportioning relationship, so that the combustion apparatus 10 has better combustion efficiency. And the control device 20 sets the second operation mode to the preset operation mode, and the control device 20 is operated in the second operation mode thereafter. In other words, after the control device 20 controls the gas valve 14 to block gas and controls the blower 16 to stop operation, and after the control device 20 receives a start signal, the control device 20 operates in a predetermined operation mode (i.e., the second operation mode) to control the igniter 12 to ignite, and the control device 20 controls the gas valve 14 and the blower 16 according to the second control data.
In one embodiment, in the detection mode, when the control device 20 determines that the combustion state detected by the detection device 18 does not conform to the first state and the second state, the control device 20 controls the gas valve 14 to block gas and controls the blower 16 to stop operating. For example, a first state is represented by a detection voltage of the thermocouple 182 being above a predetermined voltage; the detection voltage is lower than the preset voltage and higher than another preset voltage to represent a second state; when the detected voltage is less than the other predetermined voltage, the state is a third state (not conforming to the first state and the second state), the third state represents that the combustion is not good, and the control device 20 controls the gas valve 14 to block the gas and controls the blower 16 to stop running, so as to avoid danger.
By the above control method, the control device 20 can determine that the gas supplied and transmitted by the gas supply pipe P is the first natural gas or the second natural gas according to the flame state detected by the detection mode, and set the preset operation mode to the corresponding first operation mode or the second operation mode, and after the following intelligent wide-heating-value gas appliance 1 is turned off and restarted, the control device 20 controls the gas valve 14 and the blower 16 according to the preset operation mode, so as to be suitable for the gas burning the first natural gas or the second natural gas.
Then, the user operates the operation interface 24 to output the detection signal to the control device 20, so that the control device 20 can operate in the detection mode again to set the preset operation mode to be the appropriate first operation mode or the appropriate second operation mode.
In order to avoid that the natural gas supplied by the gas supply pipe P is changed during the use of the intelligent wide-heating-value gas appliance 1, in this embodiment, after the control device 20 operates in the first operation mode or the second operation mode, it will operate in the detection mode again to determine that the gas supplied by the gas supply pipe P is the first natural gas or the second natural gas.
After the control device 20 operates in the first operation mode, the control device 20 operates in the detection mode again at predetermined time intervals, for example, 20 to 30 minutes. In the detecting mode, the control device 20 controls the gas valve 14 and the blower 16 to provide a fixed gas flow and a fixed air amount to the combustion device 10, and the control device 20 determines that the combustion state detected by the detecting device 18 matches the first state or the second state, if the first state is matched, which represents that the gas is still the first natural gas, the control device 20 operates in the first operating mode; if the second state is met, which represents that the gas has been changed to the second natural gas, the control device 20 switches to operate in the second operation mode, and sets the second operation mode to a preset operation mode.
Wherein, after the control device 20 operates in the second operation mode, the control device 20 operates in the detection mode again every the predetermined time, the control device 20 controls the gas valve 14 and the blower 16 to provide a fixed gas flow and a fixed air amount to the combustion device 10, and the control device 20 determines that the combustion state detected by the detection device 18 conforms to the first state or the second state, if the combustion state conforms to the second state, which represents that the gas is still the second natural gas, the control device 20 operates in the second operation mode; if the first state is satisfied, which represents that the gas is changed into the first natural gas, the control device 20 switches to operate in the first operation mode, and sets the first operation mode as a preset operation mode.
Fig. 3 shows an intelligent wide heating value gas combustion facility 2 according to a second preferred embodiment of the present invention, which has substantially the same structure as the first embodiment, except that the combustion apparatus 26 is located in a combustion chamber 28 and includes a pilot burner 262 and a main burner.
The gas valve 30 communicates the pilot burner 262 with the main burner 264, and has a pilot solenoid valve 302, a main solenoid valve 304 and a gas regulating valve 306 inside thereof, wherein the pilot solenoid valve 302 and the main solenoid valve 304 are respectively used for opening or blocking the gas flowing to the pilot burner 262 and the main burner 264. The gas regulating valve 306 is used to regulate the flow of gas flowing to the main fire burner 264.
An air outlet of the blower 32 is connected to the combustion chamber 28 to provide combustion air to the combustion chamber 28.
The detecting device 34 includes a flame sensing electrode 342, the flame sensing electrode 342 is used for detecting the impedance of the flame generated by the combustion device 26, in this embodiment, the flame sensing electrode 342 is disposed in the combustion chamber 28 and beside the pilot burner 262. The flame sensing electrode 342 is electrically connected to a control device. Since the flame has the conductive property, the higher the combustion efficiency, the more the flame contacts the flame sensing electrode 342, and the lower the impedance detected by the flame sensing electrode 342. Thus, the impedance of the flame detected by the flame sensing electrode 342 corresponds to the combustion state of the flame of the combustion device 26.
Accordingly, the control device 36 is also applicable to the control method of the first embodiment, except that when the igniter 12 is controlled to ignite, the control device 36 controls the pilot fire electromagnetic valve 302 to open to ignite the pilot fire, and after the flame sensing electrode 342 detects the flame of the pilot fire, the control device 36 controls the pilot fire electromagnetic valve 304 to open and controls the gas regulating valve 306 to regulate the flow of the gas flowing to the pilot fire burner 264. The gas flow supplied to the pilot fire burner 262 is constant, and the pilot fire solenoid valve 302 is controlled to be kept open. Since the amount of air from the blower 32 is supplied to the pilot burner 262 and the main burner 264, the combustion state of the flame of the combustion device 26 can be obtained by detecting the flame generated by the pilot burner 262. In one embodiment, a flame sensing electrode may be disposed near the main fire burner 264 to detect the combustion state of the flame generated by the main fire burner 264.
In the detection mode of the control device 36, the control device 36 determines the combustion state to be the first state or the second state according to the impedance of the flame detected by the flame sensing electrode 342. When the detected flame impedance is less than a predetermined impedance, the control device 36 determines that the first state is satisfied, and the gas is the first natural gas; the control device 36 determines that the second state is satisfied when the detected impedance of the flame is greater than the predetermined impedance, which represents that the gas is the second natural gas.
Thus, the control device 36 can also be switched to operate in the first or second operating mode depending on the flame condition detected in the detection mode,
fig. 4 shows an intelligent wide-heating-value gas appliance 3 according to a third preferred embodiment of the present invention, which has a structure substantially the same as that of the second embodiment, except that the detecting device 34 includes a flame height sensing module 38, and the flame height sensing module 38 is used for detecting the height of the flame generated by the combustion device 26, and the detected height of the flame corresponds to the combustion state of the flame of the combustion device 26. The flame sensing electrode 342 is used for detecting whether the flame of the main fire exists or not.
In this embodiment, the flame height sensing module 38 includes two flame sensing electrodes 382 electrically connected to the control device 36. The two flame sensing electrodes 382 are located above the main fire burner 264 and are respectively disposed at different heights to detect the height of the flame generated by the main fire burner 264.
The height of the flame when the flame contacts the flame sensing electrode 382 located higher is defined as a predetermined height.
In the detection mode of the control device 36, when the height of the flame detected by the flame height sensing module 38 is greater than the predetermined height, the control device 36 determines that the first state is met, which represents that the gas is the first natural gas; when the height of the flame detected by the flame height sensing module 38 is less than the predetermined height, that is, the flame contacts only the flame sensing electrode 382 with a lower position, it is determined that the second state is satisfied, which represents that the gas is the second natural gas.
Thus, the control device 36 can also be switched to operate in the first or second operating mode depending on the flame condition detected in the detection mode.
Fig. 5 shows an intelligent wide-heating-value gas appliance 4 according to a fourth preferred embodiment of the present invention, which has a structure substantially the same as that of the second embodiment, except that the detecting device 34 includes an infrared detector 40, and the infrared detector 40 detects the intensity of the infrared rays generated by the combustion device 26, the intensity of the detected infrared rays corresponding to the combustion state of the flame of the combustion device 26. The flame sensing electrode 342 is used for detecting whether the flame of the main fire exists or not.
The control device 36 determines that the first state is satisfied when the intensity of the detected infrared ray is greater than a predetermined intensity, and the gas is the first natural gas; the control device 36 determines that the second state is satisfied when the intensity of the detected infrared ray is less than the predetermined intensity, and the gas is the second natural gas.
Thus, the control device 36 can also be switched to operate in the first or second operating mode depending on the flame condition detected in the detection mode,
fig. 6 shows an intelligent wide-heating-value gas appliance 5 according to a fifth preferred embodiment of the present invention, which is an example of a water heater, and has a structure substantially identical to that of the second embodiment, except that the water heater includes a water pipe 42, the water pipe 42 includes a water inlet pipe section 422, a heating pipe section 424 and a water outlet pipe section 426 which are communicated with each other, and the heating pipe section 424 is located above the combustion device 26. The flame generated by the combustion device 26 heats the heating section 424. The detecting device 34 includes an inlet water temperature detector 44, an outlet water temperature detector 46 and a water flow rate detector 48 electrically connected to the control device. The water inlet temperature detector 44 and the water flow rate detector 48 are disposed on the water inlet pipe segment 422, and the water outlet temperature detector 46 is disposed on the water outlet pipe segment 426. The water inlet temperature detector 44, the water outlet temperature detector 46 and the water flow rate detector 48 respectively detect the water inlet temperature, the water outlet temperature and the water flow rate.
An exhaust passage 50 is provided above the water pipe 42, the exhaust passage 50 is communicated with the combustion device 26, and gas generated by the combustion device 26 combusting gas is exhausted to the outside through the exhaust passage 50.
In this embodiment, the control device 36 operates in the detection mode when the operation interface 24 outputs the detection signal and the water flow rate detector 48 detects water flow. In the detection mode of the control device 36, the control device 36 determines the combustion state as the first state or the second state according to the impedance of the flame detected by the flame sensing electrode 342. When the detected impedance of the flame is smaller than a predetermined impedance, the control device 36 determines that the first state is satisfied, which means that the gas is the first natural gas; when the detected impedance of the flame is greater than the predetermined impedance, the control device 36 determines that the second state is satisfied, which represents that the gas is the second natural gas.
Thus, the control device 36 can also be switched to operate in the first or second operating mode depending on the flame condition detected in the detection mode.
In the first or second operation mode, the control device 36 controls the gas valve 30 and the blower 32 according to the inlet water temperature, the outlet water temperature, the water flow rate, a set temperature, and the first or second control data.
Fig. 7 shows an intelligent wide-heating-value gas appliance 6 according to a sixth preferred embodiment of the present invention, which has the same structure as the fifth embodiment, except that the flame sensing electrode 342 is used to detect the presence or absence of a flame of a pilot fire. The outlet temperature detector 46 of the detecting device 34 detects an outlet temperature of the outlet pipe 426, wherein the outlet temperature corresponds to a combustion state of the flame of the combustion device 26. In the detection mode, since the gas flow rate and the air amount are fixed, when the outlet water temperature is higher than a predetermined temperature, the control device 36 represents that the combustion efficiency is good, and determines that the outlet water temperature meets the first state, which represents that the gas is the first natural gas; when the outlet water temperature is lower than the preset temperature, the control device 36 represents that the combustion efficiency is poor, and determines that the outlet water temperature is in accordance with the second state, and represents that the gas is the second natural gas.
Except that the combustion state of the flame is judged according to the temperature of the outlet water. In one embodiment, in the detection mode, the control device 36 calculates the combustion efficiency according to the inlet water temperature, the outlet water temperature, and the water flow, and if the combustion efficiency is greater than a predetermined efficiency, it is determined to be in the first state, and if the combustion efficiency is less than the predetermined efficiency, it is determined to be in the second state.
Fig. 8 shows an intelligent wide heating value gas combustion facility 7 according to a seventh preferred embodiment of the present invention, which has a structure substantially the same as that of the fifth embodiment, except that the flame sensing electrode 342 is used to detect the presence or absence of a flame of a pilot fire. The detecting device 34 includes a gas detector 52, in the embodiment, the gas detected by the gas detector 52 is carbon monoxide, but not limited thereto, and carbon dioxide can also be detected. The gas detector 52 is located in the exhaust passage 50 and detects the concentration of the gas passing therethrough, the detected concentration of the gas corresponding to the combustion state of the flame of the combustion device 26.
In the detection mode, when the concentration of the detected gas is less than a predetermined concentration, the control device 36 indicates that the combustion efficiency is good, and determines that the first state is satisfied, and indicates that the gas is the first natural gas. When the concentration of the detected gas is greater than the predetermined concentration, the control device 36 represents that the combustion efficiency is poor, and determines that the second state is satisfied, and represents that the gas is the second natural gas.
As described above, the intelligent wide-calorific-value gas facility of the present invention can determine, according to the flame condition, that the gas supplied and conveyed by the gas supply pipe P is the first natural gas or the second natural gas, and set the gas to the corresponding first operation mode or the second operation mode, so as to be suitable for the gas for burning the first natural gas or the second natural gas with different calorific values.
The above description is only a preferred embodiment of the present invention, and all equivalent changes and modifications to the present invention as described and claimed should be included in the scope of the present invention.
Description of the reference numerals
[ invention ]
1: intelligent wide-heat-value gas equipment
10: combustion apparatus
12: igniter
14: gas valve
142: gas regulating valve
144: channel electromagnetic valve
16: blower fan
18: detecting device
182: thermocouple
20: control device
202: memory device
22: mixing device
24: operation interface
2: intelligent wide-heat-value gas equipment
26: combustion apparatus
262: mother fire burner
264: main fire burner
28: combustion chamber
30: gas valve
302: master fire electromagnetic valve
304: main fire electromagnetic valve
306: gas regulating valve
32: blower fan
34: detecting device
342: flame induction electrode
36: control device
3: intelligent wide-heat-value gas equipment
38: flame height sensing module
382: flame induction electrode
4: intelligent wide-heat-value gas equipment
40: infrared detector
42: water delivery pipe
422: water inlet pipe section
424: heating pipe section
426: water outlet pipe section
44: water inlet temperature detector
46: water outlet temperature detector
48: water flow detector
50: exhaust passage
6: intelligent wide-heat-value gas equipment
7: intelligent wide-heat-value gas equipment
52: gas detector
P: gas supply pipe
Claims (20)
1. An intelligent wide-heat-value gas device is used for being connected with a gas supply pipe, wherein the gas supply pipe is used for inputting gas, the gas is one of a first natural gas and a second natural gas, and the heat values of the first natural gas and the second natural gas are different; the intelligent wide heating value gas equipment contains:
a combustion device for burning gas to generate flame;
the igniter is arranged beside the combustion device and used for igniting the gas output by the combustion device;
a gas valve communicating the gas supply pipe with the combustion device, the gas valve being controlled to vary the flow of gas supplied to the combustion device;
a blower controlled to vary an amount of air supplied to the combustion apparatus;
a detecting device for detecting the combustion state of the flame of the combustion device;
a control device electrically connected to the gas valve, the blower and the detecting device, the control device operating in a detection mode in which the control device controls the igniter to ignite and controls the gas valve and the blower to provide a fixed gas flow and a fixed air amount to the combustion device; after the flame is ignited, the control device judges that the combustion state detected by the detection device conforms to a first state or a second state, if the combustion state conforms to the first state, the control device operates in a first operation mode, and the control device controls the gas valve and the air blower according to first control data corresponding to the first natural gas, so that the combustion device is suitable for combusting the gas of the first natural gas; if the second state is met, the control device operates in a second operation mode, and the control device controls the gas valve and the blower according to second control data corresponding to the second natural gas, so that the combustion device is suitable for combusting gas of the second natural gas.
2. The intelligent wide heating value gas appliance according to claim 1, wherein the control device controls the gas valve to block gas and controls the blower to stop operating when the control device determines that the combustion state detected by the detection device does not match the first state and the second state.
3. The intelligent wide heating value gas appliance according to claim 1, wherein after the control device operates in the first operation mode, the control device controls the gas valve and the blower at predetermined time intervals to provide a fixed gas flow rate and a fixed air amount to the combustion device, and the control device determines whether the combustion state detected by the detection device conforms to the first state or the second state, and if the combustion state conforms to the first state, the control device operates in the first operation mode; if the second state is met, the control device is switched to operate in the second operation mode.
4. The intelligent wide heating value gas appliance according to claim 1, wherein after the control device operates in the second operation mode, the control device controls the gas valve and the blower at predetermined time intervals to provide a fixed gas flow rate and a fixed air amount to the combustion device, and the control device determines that the combustion state detected by the detection device corresponds to the first state or the second state, and if the combustion state corresponds to the second state, the control device operates in the second operation mode; if the first state is met, the control device is switched to operate in the first operation mode.
5. The intelligent wide heating value gas appliance according to claim 1, wherein the control device further sets the first operation mode to a preset operation mode when determining that the combustion state detected by the detection device matches the first state; after the control device controls the gas valve to block gas and controls the blower to stop running, and after the control device receives a starting signal, the control device operates in the preset operation mode to control the igniter to ignite, and the control device controls the gas valve and the blower according to the first control data.
6. The intelligent wide heating value gas appliance according to claim 1, wherein the control device further sets the second operation mode to a preset operation mode when determining that the combustion state detected by the detection device matches the second state; after the control device controls the gas valve to block gas and controls the blower to stop running, and after the control device receives a starting signal, the control device operates in the preset operation mode to control the igniter to ignite, and the control device controls the gas valve and the blower according to the second control data.
7. The intelligent wide heating value gas appliance of claim 1, wherein the control device operates in the detection mode upon receiving a detection signal.
8. The intelligent wide heating value gas appliance of claim 1, wherein an exhaust passage is included, communicating with the combustion device; wherein the detecting device comprises a gas detector which is positioned in the exhaust passage and detects the concentration of the gas passing through, and the detected concentration of the gas corresponds to the combustion state of the flame of the combustion device; the control device determines that the first state is satisfied when the detected concentration of the gas is less than a predetermined concentration, and determines that the second state is satisfied when the detected concentration of the gas is greater than the predetermined concentration.
9. The intelligent wide heating value gas appliance of claim 8, wherein the gas detected by the gas detector is carbon monoxide.
10. The intelligent wide heating value gas appliance of claim 1, wherein the detecting device comprises a flame sensing electrode for detecting an impedance of the flame generated by the combustion device, the detected impedance of the flame corresponding to a combustion state of the flame of the combustion device; the control device judges that the detected flame impedance is in accordance with the first state when the detected flame impedance is smaller than a preset impedance, and judges that the detected flame impedance is in accordance with the second state when the detected flame impedance is larger than the preset impedance.
11. The intelligent wide heating value gas appliance of claim 1, wherein the detecting device comprises a thermocouple for detecting the flame generated by the combustion device and outputting a corresponding detecting voltage corresponding to the combustion state of the flame of the combustion device; the control device judges that the first state is met when the detection voltage is greater than a preset voltage, and judges that the second state is met when the detection voltage is less than the preset voltage.
12. The intelligent wide heating value gas appliance of claim 1, wherein the detecting device comprises a flame height sensing module for detecting a height of the flame generated by the combustion device, the detected height of the flame corresponding to a combustion state of the flame of the combustion device; the control device judges that the flame height detected by the flame height sensing module is in accordance with the first state when the flame height is larger than a preset height, and judges that the flame height detected by the flame height sensing module is smaller than the preset height, the control device judges that the flame height is in accordance with the second state.
13. The intelligent wide-calorific-value gas device according to claim 1, comprising a water pipe, wherein the water pipe comprises a water inlet pipe section, a heating pipe section and a water outlet pipe section which are communicated with each other; the flame generated by the combustion device heats the heating pipe section; the detection device comprises a water outlet temperature detector for detecting the water outlet temperature of the water outlet pipe section, wherein the water outlet temperature corresponds to the combustion state of the flame of the combustion device; the control device judges that the water outlet temperature is higher than a preset temperature and accords with the first state, and the control device judges that the water outlet temperature is lower than the preset temperature and accords with the second state.
14. The intelligent wide-heating-value gas equipment as claimed in claim 1, wherein the intelligent wide-heating-value gas equipment comprises a water conveying pipe, and the water conveying pipe comprises a water inlet pipe section, a heating pipe section and a water outlet pipe section which are communicated with each other; the flame generated by the combustion device heats the heating pipe section; the detection device comprises an inlet water temperature detector, an outlet water temperature detector and a water flow detector, wherein the inlet water temperature detector, the outlet water temperature detector and the water flow detector respectively detect an inlet water temperature, an outlet water temperature and a water flow; the control device calculates combustion efficiency according to the inlet water temperature, the outlet water temperature and the water flow, the combustion efficiency is greater than a preset efficiency and is judged to be in accordance with the first state, the combustion efficiency is less than the preset efficiency and is judged to be in accordance with the second state.
15. The intelligent wide heating value gas appliance of claim 1, wherein the detecting means includes an infrared detector that detects intensity of infrared rays generated from the combustion means, the intensity of the detected infrared rays corresponding to a combustion state of a flame of the combustion means; the control device judges that the intensity of the detected infrared ray is in accordance with the first state when the intensity of the detected infrared ray is greater than a preset intensity, and judges that the intensity of the detected infrared ray is in accordance with the second state when the intensity of the detected infrared ray is less than the preset intensity.
16. A control method of an intelligent wide-heat-value gas device is provided, wherein the intelligent wide-heat-value gas device is used for being connected with a gas supply pipe, the gas supply pipe is used for inputting gas, the gas is one of a first natural gas and a second natural gas, and the heat values of the first natural gas and the second natural gas are different; the intelligent wide-heat-value gas equipment comprises a combustion device, an igniter, a gas valve, a blower, a detection device and a control device, wherein the combustion device is used for combusting gas to generate flame; the igniter is arranged beside the combustion device and used for igniting the gas output by the combustion device; the gas valve is communicated with the gas supply pipe and the combustion device, and is controlled to change the flow of gas supplied to the combustion device; the blower is controlled to change the amount of air supplied to the combustion device; the detecting device is used for detecting the combustion state of the flame of the combustion device; the control device is electrically connected with the gas valve, the blower and the detection device; the control method is executed by the control device and comprises the following steps:
the control device is operated in a detection mode, the control device controls the igniter to ignite and controls the gas valve and the blower to provide a fixed gas flow and a fixed air quantity to the combustion device;
after the flame is ignited, the control device judges that the combustion state detected by the detection device conforms to a first state or a second state, wherein:
if the first state is met, the control device operates in a first operation mode, and the control device controls the gas valve and the blower according to first control data corresponding to the first natural gas, so that the combustion device is suitable for combusting gas of the first natural gas;
if the second state is met, the control device operates in a second operation mode, and the control device controls the gas valve and the blower according to second control data corresponding to the second natural gas, so that the combustion device is suitable for combusting gas of the second natural gas.
17. The method as claimed in claim 16, wherein after the control means operates in the first operation mode, the control means controls the gas valve and the blower at predetermined time intervals to provide a fixed gas flow rate and a fixed air amount to the combustion means, and the control means determines whether the combustion state detected by the detection means conforms to the first state or the second state, and if the combustion state conforms to the first state, the control means operates in the first operation mode; if the second state is met, the control device is switched to operate in the second operation mode.
18. The method as claimed in claim 16, wherein after the control means operates in the second operation mode, the control means controls the gas valve and the blower at predetermined time intervals to provide a fixed gas flow rate and a fixed air amount to the combustion means, and the control means determines that the combustion state detected by the detection means conforms to the first state or the second state, and if the combustion state conforms to the second state, the control means operates in the second operation mode; if the first state is met, the control device is switched to operate in the first operation mode.
19. The control method of an intelligent wide heating value gas appliance according to claim 16, wherein the control device further sets the first operation mode to a preset operation mode when determining that the combustion state detected by the detection device matches the first state;
after the control device controls the gas valve to block gas and controls the blower to stop running, and after the control device receives a starting signal, the control device operates in the preset operation mode to control the igniter to ignite, and the control device controls the gas valve and the blower according to the first control data.
20. The control method of an intelligent wide heating value gas appliance according to claim 16, wherein the control device further sets the second operation mode to a preset operation mode when determining that the combustion state detected by the detection device matches the second state;
after the control device controls the gas valve to block gas and controls the air blower to stop running, and after the control device receives a starting signal, the control device operates in the preset operation mode to control the igniter to ignite, and the control device controls the gas valve and the air blower according to the second control data.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110795846.9A CN115614999A (en) | 2021-07-14 | 2021-07-14 | Intelligent wide-heat-value gas equipment and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110795846.9A CN115614999A (en) | 2021-07-14 | 2021-07-14 | Intelligent wide-heat-value gas equipment and control method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115614999A true CN115614999A (en) | 2023-01-17 |
Family
ID=84854747
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110795846.9A Pending CN115614999A (en) | 2021-07-14 | 2021-07-14 | Intelligent wide-heat-value gas equipment and control method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115614999A (en) |
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2021
- 2021-07-14 CN CN202110795846.9A patent/CN115614999A/en active Pending
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