CN114811958B - Control method, device and equipment of wall-mounted furnace and computer readable storage medium - Google Patents
Control method, device and equipment of wall-mounted furnace and computer readable storage medium Download PDFInfo
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- CN114811958B CN114811958B CN202210152893.6A CN202210152893A CN114811958B CN 114811958 B CN114811958 B CN 114811958B CN 202210152893 A CN202210152893 A CN 202210152893A CN 114811958 B CN114811958 B CN 114811958B
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- 238000000034 method Methods 0.000 title claims abstract description 38
- 239000007789 gas Substances 0.000 claims abstract description 33
- 239000002737 fuel gas Substances 0.000 claims abstract description 8
- 238000004590 computer program Methods 0.000 claims description 5
- 239000000779 smoke Substances 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 4
- 230000001105 regulatory effect Effects 0.000 abstract description 2
- 230000006870 function Effects 0.000 description 9
- 238000013507 mapping Methods 0.000 description 8
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 6
- 230000008859 change Effects 0.000 description 6
- 230000003287 optical effect Effects 0.000 description 6
- 238000012545 processing Methods 0.000 description 6
- 229910002091 carbon monoxide Inorganic materials 0.000 description 5
- 230000001276 controlling effect Effects 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000012886 linear function Methods 0.000 description 4
- 238000010191 image analysis Methods 0.000 description 2
- 239000013307 optical fiber Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000000644 propagated effect Effects 0.000 description 2
- 238000003491 array Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008707 rearrangement Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/20—Arrangement or mounting of control or safety devices
- F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J11/00—Devices for conducting smoke or fumes, e.g. flues
Abstract
The invention belongs to the technical field of water heaters, and discloses a control method, a device, equipment and a computer readable storage medium of a wall-mounted boiler, wherein the method comprises the following steps: after ignition, when it is determined that the wall-mounted furnace is blocked, the following adjustment steps are executed: determining a target current value of a gas proportional valve according to the current actual wind pressure of a fan, wherein any proportional valve current of the gas proportional valve corresponds to a protection wind pressure and an operation wind pressure, and the protection wind pressure corresponding to the target current value is lower than the current actual wind pressure; and regulating the proportional valve current of the fuel gas proportional valve to the target current value. When the wall-mounted furnace is blocked, the target current value of the gas proportional valve is determined according to the actual wind pressure of the fan, so that the adjusted protection wind pressure is smaller than the actual wind pressure when the wall-mounted furnace is blocked, the wall-mounted furnace is prevented from being forcibly shut down, different working conditions can be adapted, and the wind resistance of the wall-mounted furnace is improved.
Description
Technical Field
The invention relates to the technical field of water heaters, in particular to a control method, a device and equipment of a wall-mounted boiler and a computer readable storage medium.
Background
Only be equipped with a wind pressure on-value and a wind pressure off-value in the current hanging stove, there is fixed difference between wind pressure on-value and the wind pressure off-value, the wind speed of the fan in the hanging stove is invariable simultaneously, consequently the amount of wind of hanging stove can't change along with the complete machine operating mode change, if the hanging stove takes place to block up, in case the proportional valve electric current of gas flow valve reduces, when actual wind pressure is less than the wind pressure off-value, just lead to hanging stove to shut down by force, make hanging stove's wind resistance weaker.
Disclosure of Invention
The invention aims to provide a control method, a device and equipment of a wall-mounted furnace and a computer readable storage medium, so as to solve the problems of weak wind resistance and easiness in shutdown of the existing wall-mounted furnace.
To achieve the purpose, the invention adopts the following technical scheme:
in a first aspect, a control method for a wall-mounted boiler, after ignition, executes the following adjustment steps when it is determined that a wall-mounted boiler is clogged:
determining a target current value of a gas proportional valve according to the current actual wind pressure of a fan, wherein any proportional valve current of the gas proportional valve corresponds to a protection wind pressure and an operation wind pressure, and the protection wind pressure corresponding to the target current value is lower than the current actual wind pressure;
and regulating the proportional valve current of the fuel gas proportional valve to the target current value.
In an embodiment, after ignition, detecting the current actual wind pressure of the fan in real time, and judging that the wall-mounted furnace is blocked when the current actual wind pressure is smaller than the protection wind pressure corresponding to the current proportional valve current and the fan operates under the maximum voltage.
In an embodiment, after ignition, detecting the current actual wind pressure of the fan in real time and obtaining the current running wind pressure corresponding to the current proportional valve current, and when the current actual wind pressure is inconsistent with the current running wind pressure, adjusting the working voltage of the fan so that the adjusted actual wind pressure is identical with the running wind pressure.
In an embodiment, when the proportional valve current is within a preset current range, the relationship between the proportional valve current and the protection wind pressure is:
Y＝m · X+a；
the relation between the proportional valve current and the running wind pressure is as follows:
Z＝n · X+b；
wherein X represents proportional valve current, Y represents protection wind pressure, Z represents operation wind pressure, and a, b, m and n represent coefficients.
In an embodiment, m=n, a+.b among the coefficients.
In an embodiment, the igniting comprises the steps of:
responding to the starting operation made by a user, and adjusting the working voltage of the fan to the maximum working voltage;
and if the difference value between the actual wind pressure and the maximum protection wind pressure of the fan at the maximum working voltage is larger than a preset difference value, igniting.
In an embodiment, after the proportional valve current of the fuel gas proportional valve is adjusted to the target current value, judging whether the flue gas meets the preset requirement, if so, keeping the wall-mounted furnace to operate in the current state, and if not, reporting a fault and stopping.
In a second aspect, a control device for a wall-mounted boiler includes:
the target current value determining module is used for determining a target current value of the gas proportional valve according to the current actual wind pressure of the fan, any proportional valve current of the gas proportional valve corresponds to a protection wind pressure and an operation wind pressure, and the protection wind pressure corresponding to the target current value is lower than the current actual wind pressure; and a proportional valve current adjustment module for adjusting the proportional valve current to the target current value.
In a third aspect, an apparatus, comprises:
one or more processors;
a storage means for storing one or more programs;
and when the one or more programs are executed by the one or more processors, the one or more processors realize the control method of the wall hanging stove.
In a fourth aspect, a computer readable storage medium has stored thereon a computer program which, when executed by a processor, implements a method of controlling a wall-hanging stove as described above.
The invention has the beneficial effects that:
according to the control method for the wall-mounted furnace, when the wall-mounted furnace is blocked, the target current value of the gas proportional valve is determined according to the actual wind pressure of the fan, so that the adjusted protection wind pressure is smaller than the actual wind pressure when the wall-mounted furnace is blocked, the wall-mounted furnace is prevented from being forcibly shut down, different working conditions can be adapted, and the wind resistance of the wall-mounted furnace is improved.
When the control device of the wall-mounted furnace is blocked, the target current value of the gas proportional valve is determined according to the actual wind pressure of the fan, so that the adjusted protection wind pressure is smaller than the actual wind pressure when the wall-mounted furnace is blocked, the wall-mounted furnace is prevented from being forcibly shut down, different working conditions can be adapted, and the wind resistance of the wall-mounted furnace is improved.
For equipment, when the equipment is blocked, the target current value of the gas proportional valve is determined according to the actual wind pressure of the fan, so that the adjusted protection wind pressure is smaller than the actual wind pressure when the equipment is blocked, the wall-mounted furnace is prevented from being forcibly shut down, different working conditions can be adapted, and the wind resistance of the wall-mounted furnace is improved.
For the computer readable storage medium, when the blockage occurs, the target current value of the gas proportional valve is determined according to the actual wind pressure of the fan, so that the adjusted protection wind pressure is smaller than the actual wind pressure when the blockage occurs, thereby avoiding forced shutdown of the wall-mounted furnace, being suitable for different working conditions and improving the wind resistance of the wall-mounted furnace.
Drawings
Fig. 1 is a schematic structural diagram of a wall-mounted boiler system according to an embodiment of the present application;
fig. 2 is a flowchart of a control method of a wall-mounted boiler according to an embodiment of the present application;
fig. 3 is a flowchart of a control method of a wall-mounted boiler according to a second embodiment of the present application;
fig. 4 is a schematic structural diagram of a control device of a wall-mounted boiler according to a third embodiment of the present disclosure;
fig. 5 is a schematic diagram of the result of the apparatus provided in embodiment four of the present application.
The figures are labeled as follows:
1-a fan; 2-a venturi; 3-a wind pressure sensor; 4-a fuel gas proportional valve;
101-a judging module; 102-a target current value determination module; 103-a proportional valve current adjustment module; 104-a holding module;
12-equipment; 14-an external device; a 16-processing unit; 18-system memory; a 20-network adapter; a 22-I/O interface; 24-display; 28-bus; 30-random access memory; 32-cache memory; 34-a storage system; 40-program/utility; 42-program modules.
Detailed Description
The invention is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present invention are shown in the drawings.
In the description of the present invention, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
In the present invention, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "right", etc. orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the invention. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.
Embodiment one:
the embodiment provides a control method of a wall-mounted furnace, which is used for controlling a wall-mounted furnace system, as shown in fig. 1, and the wall-mounted furnace system comprises a fan 1, a venturi tube 2, a wind pressure sensor 3 and a fuel gas proportional valve 4.
The fan 1 produces the air current after the circular telegram, thereby through giving the different operating voltage of fan 1 and controlling the size of air current, venturi 2 links to each other with fan 1, and the air current is through venturi 2, and wind pressure sensor 3 is used for acquireing the wind pressure in the venturi 2, and the actual wind pressure of fan 1 is established to the wind pressure, can understand, gives the different operating voltage of fan 1, will survey different wind pressures. Under normal working conditions, the gas proportional valve 4 is associated with the fan 1, and the actual wind pressure of the fan 1 is determined by proportional valve current of the gas proportional valve 4.
The actual wind pressure at any moment is obtained through the wind pressure sensor 3, when the proportional valve current I in the gas proportional valve 4 is in a preset current range, any proportional valve current I corresponds to a protection wind pressure Vp and an operation wind pressure Vr respectively, and the protection wind pressure Vp corresponding to any proportional valve current I is smaller than the operation wind pressure Vr corresponding to the proportional valve current I.
Fig. 2 is a flowchart of a control method provided in this embodiment, as shown in fig. 2, where the control method includes step S100, determining whether a wall hanging stove is blocked.
In this embodiment, step S100 includes: firstly, judging whether the current actual wind pressure is consistent with the current running wind pressure, if the current actual wind pressure is inconsistent with the current running wind pressure, adjusting the working voltage of the fan 1 to the maximum working voltage, and if the actual wind pressure is smaller than the protection wind pressure Vp corresponding to the current proportional valve current, judging that the wall-mounted furnace is blocked.
It will be appreciated that under normal conditions the actual voltage of the blower 1 is rated, for example 185V, and that at rated voltage the actual wind pressure of the blower 1 is consistent with the operating wind pressure corresponding to the proportional valve current I, and that when the two are inconsistent, a blockage may occur. Then, the working voltage of the fan 1 is adjusted to the maximum working voltage, and it can be understood that the maximum working voltage is greater than the rated voltage, for example, the maximum working voltage is set to 200V, after the fan 1 is adjusted to 200V, the rotating speed of the fan 1 is increased, and if the system is normal, the measured actual wind pressure is increased at the same time and is necessarily greater than the current running wind pressure Vr. Therefore, if the actual wind pressure is smaller than the current protection wind pressure Vp, it indicates that the wall-mounted furnace is blocked, and the degree that the maximum wind volume cannot be solved by adjusting the fan 1 is reached.
In other embodiments, the determination of the occurrence of the blockage in the wall-mounted boiler may also be directly based on a sensor, for example, a plurality of image sensors are disposed in the exhaust duct, the image sensors are used to obtain images in the exhaust duct, and whether the blockage exists is determined based on image analysis. The present embodiment is not limited thereto. A mass sensor may also be provided and attached at a specific location to indicate a blockage when its weight exceeds a predetermined range.
If, of course, no clogging has occurred after ignition, step S400 is performed to maintain the current state.
Step S100 is followed by step S200 of determining a target current value of the gas proportional valve 4 according to the actual wind pressure of the fan 1 when the blockage occurs. The protection wind pressure corresponding to the target current value is not more than the actual wind pressure when the blockage occurs.
It should be noted that, any proportion valve current of the gas proportion valve 4 is correspondingly provided with a protection wind pressure Vp and a running wind pressure Vr greater than the protection wind pressure Vp, and because there is a one-to-one correspondence between the proportion valve current and the wind pressure values (the running wind pressure Vr and the protection wind pressure Vp), the protection wind pressure Vp identical to the actual wind pressure value is determined according to the actual wind pressure first, and then the corresponding proportion valve current is determined according to the protection wind pressure Vp, and the proportion valve current is the target current value.
It should be noted that, when the system (for example, the exhaust pipeline) is not blocked, the running wind pressure Vr and the actual wind pressure are kept consistent, that is, the running wind pressure Vr corresponding to the actual wind pressure and the current proportional valve current is obtained in real time, and the actual wind pressure and the running wind pressure Vr are always kept consistent through real-time adjustment of the working voltage of the fan 1, for example, if the actual wind pressure is smaller than the running voltage.
Further, there is a mapping relationship between the proportional valve current and the operating wind pressure Vr and the protection wind pressure Vp, and the mapping relationship is not limited to a functional relationship or a mapping table. In this embodiment, there is a continuous functional relationship between the proportional valve current and the operating wind pressure Vr, and there is also a continuous functional relationship between the proportional valve current and the operating wind pressure Vr, and there is a continuous mapping relationship between the proportional valve current and the operating wind pressure Vr, and between the proportional valve current and the protecting wind pressure Vp, so as to achieve more accurate determination of the target current value.
Preferably, the following functional relationship exists between the proportional valve current and the protection wind pressure Vp:
Y＝m · x+a; wherein Y represents a proportional valve current value (in mA), X represents a value of a protection wind pressure Vp (in Pa), and m and a represent coefficients, respectively. It is understood that the functional relationship is a linear function.
In this embodiment, the following functional relationship exists between the proportional valve current and the operating wind pressure Vr:
Z＝n · x+b; where X represents a proportional valve current value (in mA), Z represents a value of the operating wind pressure Vr (in Pa), and n and b represent coefficients, respectively. It is understood that the functional relationship is also a linear function.
The two functional relations are set as a primary function, namely the proportional valve current can be determined through the protection wind pressure Vp or the operation wind pressure Vr, the corresponding proportional valve current value can be obtained rapidly in the process, the operation amount is reduced, and the control efficiency is improved.
In this embodiment, m=n, a+.b, so that the two functions have the same slope, the two functions are parallel to each other. It can be understood that when the proportional valve current changes in units, the change rates of the operating wind pressure Vr and the protecting wind pressure Vp are the same, and the change rates of the protecting wind pressure Vp and the actual wind pressure are the same as the operating wind pressure Vr and the actual wind pressure are kept consistent when the system is not blocked.
In this embodiment, the value of X ranges from 45mA to 145mA, the operating wind pressure Vr ranges from 60Pa to 100Pa, the protecting wind pressure Vp ranges from 40Pa to 80Pa, m=n=0.4, a=22, and b=42.
After step S200, step S300 is continued to adjust the proportional valve current to the target current value.
It should be noted that in step S300, the process of adjusting the proportional valve current may be gradually adjusted, that is, the proportional valve current is uniformly adjusted according to a specific rate, and finally the current is reduced to the target current value. Of course, the target current value may be adjusted instantaneously, i.e., the proportional valve current is quickly reduced to the target current value. The present embodiment is not limited thereto.
Step S300 is followed by step S400, where the current state is maintained. And the control on the wall hanging stove when being blocked is completed.
According to the control method provided by the embodiment, when the blockage occurs, the target current value of the gas proportional valve 4 is determined according to the actual wind pressure of the fan 1, so that the adjusted protection wind pressure is smaller than the actual wind pressure when the blockage occurs, the wall-mounted furnace is prevented from being forcibly shut down, different working conditions can be adapted, and the wind resistance of the wall-mounted furnace is improved.
Embodiment two:
the embodiment provides a control method for a wall-mounted boiler, which is used for controlling a wall-mounted boiler system, as shown in fig. 1, wherein the wall-mounted boiler system comprises a fan 1, a venturi tube 2, a wind pressure sensor 3, a fuel gas proportional valve 4 and a terminal (not shown in the figure). In this embodiment, the terminal is provided as a hot water switch.
After a user starts a hot water switch, the wall-mounted boiler system starts to work, meanwhile, the fan 1 is electrified to generate air flow, the air flow is controlled by different working voltages of the fan 1, the venturi tube 2 is connected with the fan 1, the air flow passes through the venturi tube 2, the air pressure sensor 3 is used for acquiring the air pressure in the venturi tube 2, the air pressure is set to be the actual air pressure of the fan 1, and the air pressure can be understood as the air pressure which is different from the air pressure which is measured by different working voltages of the fan 1. Under normal working conditions, the gas proportional valve 4 is associated with the fan 1, and the actual wind pressure of the fan 1 is determined by proportional valve current of the gas proportional valve 4.
The actual wind pressure at any moment is obtained through the wind pressure sensor 3, when the proportional valve current I in the gas proportional valve 4 is in a preset current range, any proportional valve current I corresponds to a protection wind pressure Vp and an operation wind pressure Vr respectively, and the protection wind pressure Vp corresponding to any proportional valve current I is smaller than the operation wind pressure Vr corresponding to the proportional valve current I.
Fig. 3 is a flowchart of a control method provided in the present embodiment, and as shown in fig. 3, the control method includes:
s101, responding to a starting operation made by a user, and adjusting the working voltage of the fan 1 to the maximum working voltage.
The purpose of the step S101 is to make the fan 1 enter a pre-cleaning state when starting, and after the step S101, step S201 is performed to determine whether the difference between the actual wind pressure and the maximum protection wind pressure after response is greater than a preset difference; if the difference is greater than the preset difference, step S301 is performed to perform ignition.
It should be noted that, the range of the preset difference value may be set to any value between 15Pa and 30Pa, and in this embodiment, the preset difference value is set to 20Pa, that is, if the measured actual wind pressure is greater than the maximum protection wind pressure of 20Pa, ignition is started.
If the difference between the actual wind pressure and the maximum protection wind pressure is smaller than or equal to the preset difference, step S302 is performed, and the machine is stopped after fault reporting.
It should be noted that the failure reporting in step S302 is not limited to lighting an alarm lamp, such as a red lamp, but is not limited to lighting a normally red lamp or flashing a red lamp, and the failure reporting may sound an alarm. The present embodiment is not limited thereto.
Further, a preset interval may be provided between the failure reporting and the shutdown, for example, 15s or 20s may be different, and the embodiment is not limited thereto.
In step S301, when the ignition stage is entered, the ignition is performed according to the set ignition wind pressure, and the wind pressure protection is not performed in the ignition stage, that is, when the ignition wind pressure is lower than the minimum protection wind pressure, the step S302 is not performed.
And after ignition is finished, flame reaction is carried out, if the wall-mounted furnace system normally operates, the running wind pressure Vr is consistent with the actual wind pressure, namely, the wind pressure value in the venturi tube 2 is consistent with the running wind pressure Vr all the time through real-time adjustment of the working voltage of the fan 1.
Step S301 is followed by step S401, in which it is determined whether or not a wall hanging stove is clogged.
In this embodiment, step S401 includes: firstly, judging whether the current actual wind pressure is consistent with the current running wind pressure, if the current actual wind pressure is inconsistent with the current running wind pressure, adjusting the working voltage of the fan 1 to the maximum working voltage, and if the actual wind pressure is smaller than the protection wind pressure Vp corresponding to the current proportional valve current, judging that the wall-mounted furnace is blocked.
It will be appreciated that under normal conditions the actual voltage of the blower 1 is rated, for example 185V, and that at rated voltage the actual wind pressure of the blower 1 is consistent with the operating wind pressure corresponding to the proportional valve current I, and that when the two are inconsistent, a blockage may occur. Then, the working voltage of the fan 1 is adjusted to the maximum working voltage, and it can be understood that the maximum working voltage is greater than the rated voltage, for example, the maximum working voltage is set to 200V, after the fan 1 is adjusted to 200V, the rotating speed of the fan 1 is increased, and if the system is normal, the measured actual wind pressure is increased at the same time and is necessarily greater than the current running wind pressure Vr. Therefore, if the actual wind pressure is smaller than the current protection wind pressure Vp, it indicates that the wall-mounted furnace is blocked, and the degree that the maximum wind volume cannot be solved by adjusting the fan 1 is reached.
Further, in this embodiment, it may be determined that the wall-mounted boiler is blocked directly by a sensor, for example, a plurality of image sensors are disposed in the exhaust duct, and the image sensors are used to obtain images in the exhaust duct, and determine whether there is a blockage according to image analysis. The present embodiment is not limited thereto. A mass sensor may also be provided and attached at a specific location to indicate a blockage when its weight exceeds a predetermined range.
If, of course, no clogging has occurred after ignition, the process goes to step S801 to maintain the current state.
If the wall-hanging furnace is blocked, step S501 is performed to determine the target current value of the gas proportional valve 4 according to the actual wind pressure of the fan 1 when the wall-hanging furnace is blocked. The protection wind pressure corresponding to the target current value is not more than the actual wind pressure when the blockage occurs.
Specifically, any proportional valve current of the gas proportional valve 4 is correspondingly provided with a protection wind pressure Vp and a running wind pressure Vr greater than the protection wind pressure Vp, and because of the one-to-one correspondence between the proportional valve current and the wind pressure values (the running wind pressure Vr and the protection wind pressure Vp), the protection wind pressure Vp identical to the actual wind pressure value is determined according to the actual wind pressure, and then the corresponding proportional valve current is determined according to the protection wind pressure Vp, and the proportional valve current is the target current value.
It should be noted that, since the mapping relationship exists between the proportional valve current and the operating wind pressure Vr and the protection wind pressure Vp, the mapping relationship is not limited to the functional relationship or the mapping table. In this embodiment, there is a continuous functional relationship between the proportional valve current and the operating wind pressure Vr, and there is also a continuous functional relationship between the proportional valve current and the operating wind pressure Vr, and there is a continuous mapping relationship between the proportional valve current and the operating wind pressure Vr, and between the proportional valve current and the protecting wind pressure Vp, so as to achieve more accurate determination of the target current value.
Preferably, the following functional relationship exists between the proportional valve current and the protection wind pressure Vp:
Y＝m · x+a; wherein Y represents a proportional valve current value (in mA), X represents a value of a protection wind pressure Vp (in Pa), and m and a represent coefficients, respectively. It is understood that the functional relationship is a linear function.
In this embodiment, the following functional relationship exists between the proportional valve current and the operating wind pressure Vr:
Z＝n · x+b; where X represents a proportional valve current value (in mA), Z represents a value of the operating wind pressure Vr (in Pa), and n and b represent coefficients, respectively. It is understood that the functional relationship is also a linear function.
The two functional relations are set as a primary function, namely the proportional valve current can be determined through the protection wind pressure Vp or the operation wind pressure Vr, the corresponding proportional valve current value can be obtained rapidly in the process, the operation amount is reduced, and the control efficiency is improved.
In this embodiment, m=n, a+.b, so that the two functions have the same slope, the two functions are parallel to each other. It can be understood that when the proportional valve current changes in units, the change rates of the operating wind pressure Vr and the protecting wind pressure Vp are the same, and the change rates of the protecting wind pressure Vp and the actual wind pressure are the same as the operating wind pressure Vr and the actual wind pressure are kept consistent when the system is not blocked.
In this embodiment, the value of X ranges from 45mA to 145mA, the operating wind pressure Vr ranges from 60Pa to 100Pa, the protecting wind pressure Vp ranges from 40Pa to 80Pa, m=n=0.4, a=22, and b=42.
Step S601 is performed after step S501 to adjust the proportional valve current to the target current value.
In step S401, the process of adjusting the proportional valve current may be gradually adjusted, that is, the proportional valve current is uniformly adjusted according to a specific rate, and finally the current is reduced to the target current value. Of course, the target current value may be adjusted instantaneously, i.e., the proportional valve current is quickly reduced to the target current value. The present embodiment is not limited thereto.
Step S601 is followed by step S701, and whether the smoke meets the preset requirement is judged.
In this embodiment, the preset requirements in step S701 are as follows: the carbon monoxide (CO) concentration was less than 0.2%. It can be understood that the smoke exhaust pipe is also provided with a carbon monoxide concentration sensor, and if the concentration of carbon monoxide is detected to be lower than 0.2%, the smoke meets the requirements, and the current state is maintained in step S801.
It should be noted that, if it is detected that the carbon monoxide concentration does not meet the preset requirement, step S302 is performed.
According to the control method provided by the embodiment, when the blockage occurs, the target current value of the gas proportional valve 4 is determined according to the actual wind pressure of the fan 1, so that the adjusted protection wind pressure is smaller than the actual wind pressure when the blockage occurs, the wall-mounted furnace is prevented from being forcibly shut down, different working conditions can be adapted, and the wind resistance of the wall-mounted furnace is improved.
Embodiment III:
the embodiment provides a control device of a wall-mounted furnace, which is used for controlling a wall-mounted furnace system.
As shown in fig. 1, the wall-mounted boiler system comprises a fan 1, a venturi tube 2, a wind pressure sensor 3 and a fuel gas proportional valve 4.
The fan 1 produces the air current after the circular telegram, thereby through giving the different operating voltage of fan 1 control air current's size, venturi 2 links to each other with fan 1, and the air current is through venturi 2, and wind pressure sensor 3 is used for acquireing the wind pressure in the venturi 2, and the actual wind pressure of hanging stove system is established to the wind pressure, can understand, will survey different wind pressures for giving the different operating voltage of fan 1.
As shown in fig. 4, the control device of the wall-mounted boiler includes a judging module 101, a target current value determining module 102, a proportional valve current adjusting module 103, and a holding module 104.
Specifically, the judging module 101 is configured to judge whether the wall hanging stove is blocked.
The target current value determining module 102 is configured to determine a target current value of the gas proportional valve 4 according to an actual wind pressure of the fan 1 when the blockage occurs.
The proportional valve current adjusting module 103 is used for adjusting the proportional valve current to a target current value.
A holding module 104, configured to hold the current state.
The control device of the wall-mounted boiler specifically executes the method embodiment flow as described in the first embodiment and the second embodiment, and details of the foregoing embodiment are specifically please refer to the details of the foregoing embodiment, which is not repeated. According to the control device provided by the embodiment, when the blockage occurs, the target current value of the gas proportional valve is determined according to the actual wind pressure of the fan, so that the adjusted protection wind pressure is smaller than the actual wind pressure when the blockage occurs, the wall-mounted furnace is prevented from being forcibly shut down, different working conditions can be adapted, and the wind resistance of the wall-mounted furnace is improved.
Embodiment four:
the present embodiment provides an apparatus, and fig. 5 shows a block diagram of an apparatus 12 suitable for use in implementing the present embodiment. It should be noted that the device 12 shown in fig. 5 is only an example, and should not be construed as limiting the function and scope of use of the embodiment of the present invention.
As shown in fig. 5, device 12 is in the form of a general purpose computing device. Components of device 12 may include, but are not limited to: one or more processors or processing units 16, a system memory 28, a bus 18 that connects the various system components, including the system memory 28 and the processing units 16.
Bus 18 represents one or more of several types of bus structures, including a memory bus or memory controller, a peripheral bus, an accelerated graphics port, a processor, and a local bus using any of a variety of bus architectures. By way of example, and not limitation, such architectures include Industry Standard Architecture (ISA) bus, micro channel architecture (MAC) bus, enhanced ISA bus, video Electronics Standards Association (VESA) local bus, and Peripheral Component Interconnect (PCI) bus.
Device 12 typically includes a variety of computer system readable media. Such media can be any available media that is accessible by device 12 and includes both volatile and nonvolatile media, removable and non-removable media.
The system memory 28 may include computer system readable media in the form of volatile memory, such as Random Access Memory (RAM) 30 and/or cache memory 32. Device 12 may further include other removable/non-removable, volatile/nonvolatile computer system storage media. By way of example only, storage system 34 may be used to read from or write to non-removable, nonvolatile magnetic media (not shown in FIG. 5, commonly referred to as a "hard disk drive"). Although not shown in fig. 5, a magnetic disk drive for reading from and writing to a removable non-volatile magnetic disk (e.g., a "floppy disk"), and an optical disk drive for reading from or writing to a removable non-volatile optical disk (e.g., a CD-ROM, DVD-ROM, or other optical media) may be provided. In such cases, each drive may be coupled to bus 18 through one or more data medium interfaces. Memory 28 may include at least one program product having a set (e.g., at least one) of program modules configured to carry out the functions of embodiments of the invention.
A program/utility 40 having a set (at least one) of program modules 42 may be stored in, for example, memory 28, such program modules 42 including, but not limited to, an operating system, one or more application programs, other program modules, and program data, each or some combination of which may include an implementation of a network environment. Program modules 42 generally perform the functions and/or methods of the embodiments described herein.
Device 12 may also communicate with one or more external devices 14 (e.g., keyboard, pointing device, display 24, etc.), one or more devices that enable a user to interact with device 12, and/or any devices (e.g., network card, modem, etc.) that enable device 12 to communicate with one or more other computing devices. Such communication may occur through an input/output (I/O) interface 22. In addition, in the device 12 of the present embodiment, the display 24 is not present as a separate body, but is embedded in the mirror surface, and the display surface of the display 24 and the mirror surface are visually integrated when the display surface of the display 24 is not displayed. Also, device 12 may communicate with one or more networks such as a Local Area Network (LAN), a Wide Area Network (WAN) and/or a public network, such as the Internet, via network adapter 20. As shown, network adapter 20 communicates with other modules of device 12 over bus 18. It should be appreciated that although not shown, other hardware and/or software modules may be used in connection with device 12, including, but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, data backup storage systems, and the like.
The processing unit 16 executes various functional applications and data processing by running programs stored in the system memory 28, for example, implementing a control method provided in the first or second embodiment of the present invention.
For the equipment provided by the embodiment, when the blockage occurs, the target current value of the gas proportional valve is determined according to the actual wind pressure of the fan, so that the adjusted protection wind pressure is smaller than the actual wind pressure when the blockage occurs, thereby avoiding forced shutdown of the wall-mounted furnace, being suitable for different working conditions and improving the wind resistance of the wall-mounted furnace.
Fifth embodiment:
the present embodiment provides a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements a control method as provided in the first or second embodiment of all the invention of the present application.
For the computer readable storage medium provided by the embodiment, when the blockage occurs, the target current value of the gas proportional valve is determined according to the actual wind pressure of the fan, so that the adjusted protection wind pressure is smaller than the actual wind pressure when the blockage occurs, thereby avoiding the forced shutdown of the wall-mounted furnace, being suitable for different working conditions and improving the wind resistance of the wall-mounted furnace.
Any combination of one or more computer readable media may be employed. The computer readable medium may be a computer readable signal medium or a computer readable storage medium. The computer readable storage medium can be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or a combination of any of the foregoing. More specific examples (a non-exhaustive list) of the computer-readable storage medium would include the following: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In this document, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.
The computer readable signal medium may include a propagated data signal with computer readable program code embodied therein, either in baseband or as part of a carrier wave. Such a propagated data signal may take any of a variety of forms, including, but not limited to, electro-magnetic, optical, or any suitable combination of the foregoing. A computer readable signal medium may also be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device.
Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.
Computer program code for carrying out operations of the present invention may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, smalltalk, C ++ and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any kind of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or may be connected to an external computer (for example, through the Internet using an Internet service provider).
It is to be understood that the above examples of the present invention are provided for clarity of illustration only and are not limiting of the embodiments of the present invention. Various obvious changes, rearrangements and substitutions can be made by those skilled in the art without departing from the scope of the invention. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the invention are desired to be protected by the following claims.
Claims (9)
1. The control method of the wall-mounted furnace is characterized in that after ignition, when the wall-mounted furnace is judged to be blocked, the following adjustment steps are executed:
determining a target current value of a gas proportional valve according to the current actual wind pressure of a fan, wherein any proportional valve current of the gas proportional valve corresponds to a protection wind pressure and an operation wind pressure, and the protection wind pressure corresponding to the target current value is lower than the current actual wind pressure;
adjusting the proportional valve current of the fuel gas proportional valve to the target current value;
the ignition includes the steps of:
responding to the starting operation made by a user, and adjusting the working voltage of the fan to the maximum working voltage;
and if the difference value between the actual wind pressure and the maximum protection wind pressure of the fan at the maximum working voltage is larger than a preset difference value, igniting.
2. The control method of a wall-mounted boiler according to claim 1, wherein after ignition, current actual wind pressure of a fan is detected in real time, and when the current actual wind pressure is smaller than protection wind pressure corresponding to current proportional valve current and the fan operates under maximum voltage, the wall-mounted boiler is judged to be blocked.
3. The control method of a wall-mounted boiler according to claim 2, wherein after ignition, current actual wind pressure of a fan is detected in real time and current operation wind pressure corresponding to current proportional valve current is obtained, and when the current actual wind pressure is inconsistent with the current operation wind pressure, the working voltage of the fan is adjusted so that the adjusted actual wind pressure is identical with the operation wind pressure.
4. The control method of a wall-mounted boiler according to claim 2, wherein the proportional valve current is within a preset current range, and the relationship between the proportional valve current and the protection wind pressure is:
Y＝m · X+a；
the relation between the proportional valve current and the running wind pressure is as follows:
Z＝n · X+b；
wherein X represents proportional valve current, Y represents protection wind pressure, Z represents operation wind pressure, and a, b, m and n represent coefficients.
5. The method of controlling a wall-mounted boiler according to claim 4, wherein m=n, a+.b among the coefficients.
6. The method for controlling a wall-mounted boiler according to claim 1, wherein after the proportional valve current of the gas proportional valve is adjusted to the target current value, whether the smoke meets a preset requirement is judged, if yes, the wall-mounted boiler is kept to operate in a current state, and if not, a fault is reported and the wall-mounted boiler is stopped.
7. A control apparatus for a wall-hanging stove, for executing the control method for a wall-hanging stove as claimed in any one of claims 1 to 6, comprising:
the target current value determining module is used for determining a target current value of the gas proportional valve according to the current actual wind pressure of the fan, any proportional valve current of the gas proportional valve corresponds to a protection wind pressure and an operation wind pressure, and the protection wind pressure corresponding to the target current value is lower than the current actual wind pressure; and
and the proportional valve current adjusting module is used for adjusting the proportional valve current to the target current value.
8. An apparatus, comprising:
one or more processors;
a storage means for storing one or more programs;
when the one or more programs are executed by the one or more processors, the one or more processors implement the method for controlling a wall-mounted boiler according to any one of claims 1 to 6.
9. A computer-readable storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, implements the control method of the wall-hanging stove as claimed in any one of claims 1 to 6.
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| CN114811958A (en) | 2022-07-29 |
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