CN114992876A - Gas water heater and control method thereof - Google Patents
Gas water heater and control method thereof Download PDFInfo
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- CN114992876A CN114992876A CN202111331481.0A CN202111331481A CN114992876A CN 114992876 A CN114992876 A CN 114992876A CN 202111331481 A CN202111331481 A CN 202111331481A CN 114992876 A CN114992876 A CN 114992876A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 111
- 238000000034 method Methods 0.000 title claims abstract description 28
- 238000002485 combustion reaction Methods 0.000 claims abstract description 111
- 238000001514 detection method Methods 0.000 claims description 13
- 238000012546 transfer Methods 0.000 claims description 7
- 238000011161 development Methods 0.000 abstract description 5
- 238000005520 cutting process Methods 0.000 description 12
- 230000011218 segmentation Effects 0.000 description 8
- 230000018109 developmental process Effects 0.000 description 4
- 229910002056 binary alloy Inorganic materials 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
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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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- 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
- F24H1/10—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium
- F24H1/107—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium 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
- F24H9/18—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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Abstract
The invention discloses a gas water heater and a control method thereof, wherein the gas water heater comprises a plurality of fire grate segments, a fire grate segment which is currently burnt and a target fire grate segment are obtained, and the target fire grate segment is a fire grate segment corresponding to actually required heat; and judging whether the fire grate segment which is currently combusted can be directly switched to a target fire grate segment or not, if not, acquiring an intermediate fire grate segment, switching from the fire grate segment which is currently combusted to the intermediate fire grate segment, and then switching from the intermediate fire grate segment to the target fire grate segment. According to the method, the middle fire grate segment is selected by means of configuring the parameter table and the like, and when the current burning fire grate segment cannot be directly switched to the target fire grate segment, the correspondingly obtained middle fire grate segment is used for switching, so that the flexibility of segmented switching of the gas water heater can be increased, the universality of a program is met, the program space is reduced, the cost is reduced, and the development efficiency is improved; and simultaneously, the special sectional combustion requirement configured by a user household is met.
Description
Technical Field
The invention belongs to the technical field of gas water heaters, and particularly relates to a gas water heater and a control method thereof.
Background
The gas heater is through the mode of burning the gas to water heating, is equipped with a plurality of fire rows segmentation in gas heater usually, adjusts the burning mode of fire row segmentation according to user's user demand for gas heater has different heating effect, satisfies the user demand that the user is different.
The general sectional type gas water heater is divided into a plurality of sectional modes such as three sections, four sections, five sections and the like, when the heat demand changes, different sectional burning is needed to be used, and the problem of fire transfer control is involved. In the fire transfer process of the gas water heater, the fire transfer can be carried out only between two adjacent fire grate segments. In the existing gas water heater, the valve cutting program of the gas water heater cannot be flexible due to the fixed program of the sectional valve cutting mode; meanwhile, the existing sectional valve cutting mode cannot be compatible with various valve cutting modes, and cannot meet the special sectional combustion requirement of a user home.
In view of the above, the present invention is particularly proposed.
Disclosure of Invention
The technical problem to be solved by the invention is to overcome the defects of the prior art, and provide a gas water heater and a control method thereof, which can increase the flexibility of the sectional switching of the gas water heater, meet the universality of a program, reduce the space of the program, reduce the cost and improve the development efficiency; in addition, the gas water heater and the control method thereof provided by the invention can achieve the purposes of timely adjusting the switching mode of the fire grate segments according to different combustion programs of the gas water heater and improving the combustion efficiency.
In order to solve the technical problems, the invention adopts the technical scheme that:
a control method of a gas water heater comprises a plurality of fire grate segments, wherein a currently burning fire grate segment and a target fire grate segment are obtained, and the target fire grate segment is a fire grate segment corresponding to actually required heat;
judging whether the fire grate segment of the current combustion can be directly switched to the target fire grate segment or not, if not, acquiring an intermediate fire grate segment, switching from the fire grate segment of the current combustion to the intermediate fire grate segment, and then switching from the intermediate fire grate segment to the target fire grate segment.
Preferably, the judging whether the currently burning fire grate segment can be directly switched to the target fire grate segment with the actually required heat comprises inquiring all fire grate segments which can be directly switched from the currently burning fire grate segment from a prestored fire grate segment switching mode, and judging whether the currently burning fire grate segment can be directly switched to the target fire grate segment according to an inquiry result; preferably, a configuration parameter table is prestored, a plurality of fire grate segments are prestored in the parameter configuration table, and a configuration relation whether each fire grate segment can be directly switched is prestored.
Preferably, the acquiring the middle fire grate segment includes acquiring a fire grate segment which can be directly switched from the current combustion fire grate segment from a pre-stored fire grate segment switching mode, judging whether the acquired fire grate segment can be directly switched to the target fire grate segment, and if so, setting the acquired fire grate segment as the middle fire grate segment.
Preferably, if a plurality of fire grate segments which can be directly switched from the current combustion fire grate segment exist are obtained, the obtained plurality of fire grate segments can be directly switched to the target fire grate segment, whether the obtained plurality of fire grate segments have faults or not is detected, and the fire grate segment without faults is set as an intermediate fire grate segment.
Or if a plurality of fire grate segments which can be directly switched from the current combustion fire grate segment exist are obtained, the obtained fire grate segments can be directly switched to the target fire grate segment, and when the actual heat demand is judged to be increased, the fire grate segment which provides more heat is preferentially used as the middle fire grate segment; and when the actual heat demand is reduced, preferentially using the fire grate segment with less heat supply as the middle fire grate segment.
Preferably, after the fire grate segment which is currently combusted is switched to the middle fire grate segment, the middle fire grate segment is switched to the target fire grate segment after the middle fire grate segment is stably combusted.
Preferably, the step of obtaining the fire grate segment and the target fire grate segment of the current combustion includes obtaining water flow, set water temperature and inlet water temperature of the gas water heater, calculating actual demand heat according to the water flow, the set water temperature and the inlet water temperature, and obtaining the corresponding target fire grate segment according to the actual demand heat.
Another object of the present invention is to provide a gas water heater using the control method as described above, including:
the fire grate comprises a plurality of fire grate segments, wherein a fire transfer sheet is arranged between every two adjacent fire grate segments and used for transferring fire between every two adjacent fire grate segments;
the segment valve is used for controlling the connection and disconnection between the fire grate segment and the gas pipeline;
and the main control board is used for controlling the opening or closing of the sectional valve and is connected with the sectional valve.
Preferably, the fire grate segment switching device comprises a storage device, wherein the storage device is used for storing fire grate segment switching modes and is integrally arranged on the main control panel; or the memory is arranged independently and connected with the main control board.
Preferably, be equipped with flame detection device for detect the fire and arrange the stability of burning on the segmentation, flame detection device is connected with the main control board.
Preferably, a water temperature detection device is arranged and used for detecting the water inlet temperature and is connected with the main control panel.
After adopting the technical scheme, compared with the prior art, the invention has the following beneficial effects:
1. according to the method, the middle fire grate segment is selected according to the optimal principle in a mode of a variable preset parameter configuration table and the like when the currently burning fire grate segment cannot be directly switched to the target fire grate segment, and the switching is performed through the middle fire grate segment, so that the flexibility of the segmented switching of the gas water heater can be increased, the universality of a program is met, the program space is reduced, the cost is reduced, and the development efficiency is improved; and simultaneously, the special sectional combustion requirement configured by a user household is met.
2. According to the invention, after the fire grate is switched to the middle fire grate segment, the middle fire grate segment is stably combusted and then switched to the target fire grate segment, so that the success rate of fire grate segment switching is improved, and the switching failure caused by unstable combustion of the fire grate segment is avoided.
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention, are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without limiting the invention to the right. It is obvious that the drawings in the following description are only some embodiments, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:
FIG. 1 is a flow chart of a control method of a gas water heater according to the present invention;
it should be noted that the drawings and the description are not intended to limit the scope of the inventive concept in any way, but to illustrate it by a person skilled in the art with reference to specific embodiments.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and the following embodiments are used for illustrating the present invention and are not intended to limit the scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1, an embodiment of the present invention introduces a control method for a gas water heater, where the gas water heater includes a plurality of fire grate segments, a fire grate segment currently burning and a target fire grate segment are obtained, and the target fire grate segment is a fire grate segment corresponding to an actual heat demand;
and judging whether the fire grate segment which is currently combusted can be directly switched to a target fire grate segment or not, if not, acquiring an intermediate fire grate segment, switching from the fire grate segment which is currently combusted to the intermediate fire grate segment, and then switching from the intermediate fire grate segment to the target fire grate segment.
Be equipped with a plurality of fire row segmentation in gas heater, can select different fire row segmentation burning according to the user demand that the user is different. For example, in summer, the ambient temperature is high, and the user expects that the water temperature is slightly low when using the gas water heater, and the fire grate with a small quantity can be used for combustion at this moment, so that the outlet water temperature of the gas water heater is controlled within the low-temperature range expected by the user. In winter, the environment temperature is low, a user wants the water temperature to be slightly high when using the gas water heater, and at the moment, a large number of fire grates can be used for burning, so that the water outlet temperature of the gas water heater is increased. And according to different use requirements of users, different fire rows are used for combustion.
According to the invention, through the parameter configuration table and according to the optimization principle, the middle fire grate segment is selected, and when the currently burning fire grate segment cannot be directly switched to the target fire grate segment, the middle fire grate segment is switched, so that the flexibility of the segmented switching of the gas water heater can be increased, the universality of a program is met, the program space is reduced, the cost is reduced, and the development efficiency is improved; and simultaneously, the special sectional combustion requirement configured by a user household is met.
In the embodiment of the invention, the judging whether the currently burning fire grate segment can be directly switched to the target fire grate segment comprises inquiring all fire grate segments which can be directly switched from the currently burning fire grate segment from the prestored fire grate segment switching modes, and judging whether the currently burning fire grate segment can be directly switched to the target fire grate segment according to the inquiring result.
The method comprises the steps of pre-storing fire grate segment switching modes in a gas water heater, correspondingly storing fire grate segments which can be directly switched for each fire grate segment, and judging whether the fire grate segments which are burnt at present can be directly switched to target fire grate segments or not according to the pre-stored fire grate segment switching modes after the target fire grate segments are obtained.
In the embodiment of the invention, the acquiring of the intermediate fire grate segment comprises acquiring a fire grate segment which can be directly switched from a current combustion fire grate segment from a pre-stored fire grate segment switching mode, judging whether the acquired fire grate segment can be directly switched to a target fire grate segment, and if so, setting the acquired fire grate segment as the intermediate fire grate segment.
The switching mode of fire grate segmentation is prestored in the gas water heater, for example, for a five-segment gas water heater with three segmentation valves, the switching mode comprises A-segment combustion, B-segment combustion, C-segment combustion, D-segment combustion and E-segment combustion. In the A-section combustion, opening a first section valve, and closing a second section valve and a third section valve; in the B-section combustion, opening a second section valve, and closing a first section valve and a third section valve; in the C-section combustion, opening the first section valve and the second section valve, and closing the third section valve; in the D-section combustion, opening the first section valve and the third section valve, and closing the second section valve; in the E-stage combustion, the first, second and third segment valves are all open. The switching mode includes, can switch each other between A section burning and the B section burning, can switch each other between A section burning and the C section burning, can switch each other between A section burning and the D section burning, can switch each other between C section burning and the E section burning, can switch each other between D section burning and the E section burning.
If the current gas water heater is in the A-section combustion, the E-section combustion to be used by the gas water heater is obtained after calculation according to the use requirements of users, and the fact that the A-section combustion cannot be directly switched to the E-section combustion can be known from the switching mode. However, the combustion from the section A can be switched to the combustion from the section C, and the combustion from the section C can be switched to the combustion from the section E, so that the combustion from the section A is switched to the combustion from the section C, and then the combustion from the section C is switched to the combustion from the section E, and the use requirements of users are met.
In the embodiment of the invention, if a plurality of fire grate segments which can be directly switched from the current combustion fire grate segment exist are obtained, and the obtained plurality of fire grate segments can be directly switched to the target fire grate segment, whether faults exist in the obtained plurality of fire grate segments or not is detected, and the fire grate segments without faults are set as middle fire grate segments; for example, currently, the gas water heater is in the stage a combustion, and the calculation is performed according to the use requirement of the user to obtain that the gas water heater needs to use the stage E combustion. From the switching mode, the combustion from the section A can be switched to the combustion in the section C, and can also be switched to the combustion in the section D, and the combustion in the section C and the combustion in the section D can be switched to the combustion in the section E. Whether the fire row subsection of C section burning and the fire row subsection of D section burning have the trouble this moment is detected, if the fire row subsection of C section burning has the trouble and the fire row subsection of D section burning is normal, then select D section burning, switch over to D section burning from A section burning earlier, then switch over to E section burning from D section burning.
According to the invention, when a plurality of middle fire grate segments are arranged, whether faults exist in the middle fire grate segments is detected, the faults are eliminated, the switching failure caused by the faults of the fire grate segments is avoided, and the working stability of the gas water heater is improved.
Or, in the embodiment of the present invention, if a plurality of fire grate segments that can be directly switched from the current combustion fire grate segment are obtained, and the obtained plurality of fire grate segments can be directly switched to the target fire grate segment, when it is determined that the current actual required heat is increased compared with the actual required heat in the previous time period, the fire grate segment that provides more heat is preferentially used as the intermediate fire grate segment; when the current actual heat demand is reduced compared with the actual heat demand in the previous time period, preferentially using the fire grate segment with less heat supply as an intermediate fire grate segment; for example, currently, a gas water heater is in a-stage combustion, and the calculation is performed according to the use requirement of a user to obtain that the gas water heater needs to use E-stage combustion. From the switching mode, the combustion from the section A can be switched to the combustion in the section C, and also can be switched to the combustion in the section D, and the combustion in the section C and the combustion in the section D can be switched to the combustion in the section E. At the moment, comparing the current actual demand heat with the actual demand heat in the previous set time period, when the current actual demand heat is greater than the actual demand heat in the previous set time period, selecting C section combustion with higher combustion heat, firstly switching from A section combustion to C section combustion, and then switching from C section combustion to E section combustion; and when the current actual demand heat is smaller than the actual demand heat in the previous set time period, selecting D-section combustion with lower combustion heat, firstly switching from the A-section combustion to the D-section combustion, and then switching from the D-section combustion to the E-section combustion.
In the embodiment of the invention, after the subsection of the currently burning fire grate is switched to the subsection of the middle fire grate, the subsection of the middle fire grate is switched to the subsection of the target fire grate after the subsection of the middle fire grate is stably burnt.
For example, the current gas water heater is in the A-stage combustion, and the E-stage combustion to be used by the gas water heater is obtained after calculation is carried out according to the use requirement of a user. Because the combustion in the section A can not be directly switched to the combustion in the section E, the combustion in the section A needs to be firstly switched to the combustion in the section C, and then the combustion in the section C is switched to the combustion in the section E. After the combustion is switched from the combustion in the section A to the combustion in the section C, the combustion in the section C needs to be waited for to be stable, and then the combustion in the section C is switched to the combustion in the section E.
According to the invention, after the fire grate is switched to the middle fire grate segment, the middle fire grate segment is stably combusted and then switched to the target fire grate segment, so that the success rate of fire grate segment switching is improved, and the switching failure caused by unstable combustion of the fire grate segment is avoided.
In the embodiment of the invention, the acquiring of the fire grate segment and the target fire grate segment which are currently combusted comprises acquiring water flow, set water temperature and inlet water temperature, calculating actual heat demand according to the water flow, the set water temperature and the inlet water temperature, and acquiring a corresponding fire grate segment according to the actual heat demand to be used as the target fire grate segment.
When detecting that the set water temperature is higher than the inlet water temperature but the actual heat demand is not large, the gas water heater only needs to use smaller firepower to heat water, and when detecting that the actual heat demand is large, the gas water heater needs to use larger firepower to heat water. The fire grate segment that burns when the gas heater uses less fire is different from the fire grate segment that burns when the gas heater uses more fire.
According to the invention, the target fire grate segment is calculated according to the set water temperature and the inlet water temperature, so that the fire grate segment corresponding to the user requirement can be accurately used for combustion, and the use requirement of the user is met.
The embodiment of the invention discloses a gas water heater adopting the control method, which comprises a plurality of fire grate segments, wherein a fire transfer sheet is arranged between two adjacent fire grate segments and used for transferring fire between the two adjacent fire grate segments, and when one fire grate segment is combusted, flame can be transferred to the adjacent fire grate segments through the fire transfer sheet to ignite the adjacent fire grate segments. The gas water heater is also internally provided with a sectional valve for controlling the on-off between the fire grate segment and the gas pipeline, when the sectional valve is opened, the gas pipeline is communicated with the corresponding fire grate segment to convey gas to the corresponding fire grate segment for combustion, and the main control panel of the gas water heater is used for controlling the opening or closing of the sectional valve. The gas water heater is also internally provided with a memory, the memory stores a fire grate segment switching mode, and the memory can be integrally arranged on the main control board; or, the storage device can be independently arranged and connected with the main control board. The gas heater still includes: water flow detection device, flame detection device and temperature detection device etc. flame detection device is used for detecting whether the fire row segmentation is stably burnt, and temperature detection device is used for detecting the temperature of intaking, and temperature detection device is connected with the main control board, and flame detection device is connected with the main control board to the realization is to the communication transmission of different signals.
The gas water heater is also provided with a gas main valve, the gas main valve is connected with the segment valve, a gas proportional valve is arranged between the gas main valve and the segment valve, and the gas main valve is connected with gas supply equipment through a gas pipeline. The gas supply equipment can provide gas, the gas enters the gas water heater through the gas main valve, and the gas cannot enter the gas water heater after the gas main valve is closed. The gas proportional valve can adjust the opening degree, control the transmission rate of gas, and then control the firepower.
Be equipped with a plurality of fire row subsections in gas heater, can select different fire row subsection burning according to the user demand that the user is different. For example, in summer, the ambient temperature is high, and the user expects that the water temperature is slightly low when using the gas water heater, and the fire grate with a small quantity can be used for combustion at this moment, so that the outlet water temperature of the gas water heater is controlled within the low-temperature range expected by the user. In winter, the environment temperature is low, a user wants the water temperature to be slightly high when using the gas water heater, and at the moment, a large number of fire grates can be used for burning, so that the water outlet temperature of the gas water heater is increased. And according to different use requirements of users, different fire rows are used for combustion.
In the working process of the gas water heater, the water inlet temperature is detected through the water temperature detection device, the target fire grate segment is calculated according to the water flow, the water inlet temperature and the water temperature set by a user, and the target fire grate segment is a fire grate segment corresponding to the actual heat demand. And then judging whether the fire grate segment currently burning can be directly switched to a target fire grate segment according to a fire grate segment switching mode stored in the memory, if not, acquiring an intermediate fire grate segment, firstly switching from the fire grate segment currently burning to the intermediate fire grate segment, and then switching from the intermediate fire grate segment to the target fire grate segment. The opening of the section valve is controlled through the main control board, so that the on-off between the fire grate section and the gas pipeline is controlled, when the section valve is opened, the gas pipeline is communicated with the corresponding fire grate section, and the gas is conveyed to the corresponding fire grate section for combustion.
According to the invention, by selecting the middle fire grate segment, when the currently burning fire grate segment cannot be directly switched to the target fire grate segment, the middle fire grate segment is switched, so that the flexibility of the segmented switching of the gas water heater can be increased, the universality of a program is met, the program space is reduced, the cost is reduced, and the development efficiency is improved; and simultaneously, the special sectional combustion requirement configured by a user household is met.
In actual use, a valve-cutting type parameter table can be created in advance, the valve-cutting type is represented by a parameter, and the parameter is called from the table when switching is needed. For example, the five-section gas water heater with three section valves comprises A-section combustion, B-section combustion, C-section combustion, D-section combustion and E-section combustion. In the A-section combustion, a first section valve is opened, and a second section valve and a third section valve are closed; in the B-section combustion, opening a second section valve, and closing a first section valve and a third section valve; in the C-section combustion, opening a first section valve and a second section valve, and closing a third section valve; in the D-section combustion, opening the first section valve and the third section valve, and closing the second section valve; in the E-stage combustion, the first, second and third segment valves are all open. The switching mode includes, can switch each other between A section burning and the B section burning, can switch each other between A section burning and the C section burning, can switch each other between A section burning and the D section burning, can switch each other between C section burning and the E section burning, can switch each other between D section burning and the E section burning.
Since all three segment valves have an open or closed state, corresponding to 1's and 0's in the binary system, each segment combustion can be represented by a binary number, with 0's in the binary system representing segment valve closing, and 1's in the binary system representing segment valve opening. For a water heater with three segment valves, a 4-bit binary number can be used for representation, and since there are only three segment valves, the highest bit of the binary number is set to 0, and the states of the three segment valves are represented in turn by the remaining three bits. Binary number 0001b represents the combustion in section a, and the corresponding hexadecimal number is 0x 01; the B-stage combustion is represented by a binary number 0010B, which corresponds to a hexadecimal number of 0x 02; binary number 0011b represents the C-stage combustion, corresponding to a hexadecimal number of 0x 03; representing D-section combustion by using a binary number 0101b, wherein the corresponding hexadecimal number is 0x 05; the E-stage combustion is represented by the binary number 0x111b, corresponding to a hexadecimal number 0x 07. The cut valve type parameter table is as follows:
v. switch valve type time switch threshold
{ MOVE _ TYPE _ AB,15,150},/. A- > B MOVE _ TYPE _ AB is 0x12 ×
{ MOVE _ TYPE _ BA,10,110},/. Bb- > A MOVE _ TYPE _ BA of 0x21 >
{ MOVE _ TYPE _ AC,15,150},/. A- > C MOVE _ TYPE _ AC is 0x13 ×
{ MOVE _ TYPE _ CA,10,110},/. C- > A MOVE _ TYPE _ CB of 0x31 ×
{ MOVE _ TYPE _ AD,15,150},/. A- > D MOVE _ TYPE _ AD of 0x15 >
{ MOVE _ TYPE _ DA,10,110},/D- > A MOVE _ TYPE _ DA of 0x51 }
{ MOVE _ TYPE _ CE,15,150},/. C- > E MOVE _ TYPE _ CE is 0x37 ×
{ MOVE _ TYPE _ EC,10,110},/. E- > C MOVE _ TYPE _ EC of 0x73 ×
{ MOVE _ TYPE _ DE,15,150},/. dD- > E MOVE _ TYPE _ DE is 0x57 ×
{ MOVE _ TYPE _ ED,10,110},/. E- > D MOVE _ TYPE _ ED is 0x75 ×
For different types of gas water heaters, different cut valve type parameter tables can be defined. According to the parameter table of the valve cutting type defined by the sectional valve, which valve cutting modes are available when the valve is cut, and which configured valve cutting type is used when the valve is cut. For different fire grate segments and different valve cutting types, a program can be selected according to a valve cutting type parameter table, so that a set of programs is realized, different parameters support the control of the valve cutting of different segments, and the effect of dynamic configuration in the valve cutting process is realized.
In the description provided herein, numerous specific details are set forth. However, it is understood that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.
All of the features disclosed in this specification (including any accompanying claims, abstract and drawings), and all of the processes or elements of any method or apparatus so disclosed, may be combined in any combination, except combinations where at least some of such features and/or processes or elements are mutually exclusive. Each feature disclosed in this specification (including any accompanying claims, abstract and drawings) may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise.
Moreover, those skilled in the art will appreciate that although some embodiments described herein include some features included in other embodiments, not others, combinations of features of different embodiments are meant to be within the scope of the invention and form different embodiments.
The above embodiments are only preferred embodiments of the present invention, and not intended to limit the present invention in any way, and although the present invention has been disclosed by the preferred embodiments, it is not intended to limit the present invention, and those skilled in the art can make various changes and modifications to the equivalent embodiments by using the technical contents disclosed above without departing from the technical scope of the present invention, and the embodiments in the above embodiments can be further combined or replaced, but any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention still fall within the technical scope of the present invention.
Claims (10)
1. A control method of a gas water heater, which comprises a plurality of fire grate segments, is characterized in that,
acquiring a fire grate segment which is currently combusted and a target fire grate segment, wherein the target fire grate segment is a fire grate segment corresponding to actually required heat;
judging whether the fire grate segment of the current combustion can be directly switched to the target fire grate segment or not, if not, acquiring an intermediate fire grate segment, switching from the fire grate segment of the current combustion to the intermediate fire grate segment, and then switching from the intermediate fire grate segment to the target fire grate segment.
2. The control method of the gas water heater according to claim 1, wherein the judging whether the currently burning fire grate segment can be directly switched to the target fire grate segment requiring heat actually comprises inquiring all fire grate segments which can be directly switched from the currently burning fire grate segment from a prestored fire grate segment switching mode, and judging whether the currently burning fire grate segment can be directly switched to the target fire grate segment according to the inquiring result;
preferably, a configuration parameter table is prestored, a plurality of fire grate segments are prestored in the parameter configuration table, and a configuration relation whether each fire grate segment can be directly switched is prestored.
3. The control method of the gas water heater according to claim 1 or 2, wherein the acquiring the intermediate fire grate segment includes acquiring a fire grate segment that can be directly switched from a current combustion fire grate segment from a prestored fire grate segment switching manner, judging whether the acquired fire grate segment can be directly switched to a target fire grate segment, and if so, setting the acquired fire grate segment as the intermediate fire grate segment.
4. The control method of the gas water heater according to claim 3, wherein if a plurality of fire grate segments which can be directly switched from a current combustion fire grate segment are obtained and the obtained fire grate segments can be directly switched to a target fire grate segment, whether the obtained fire grate segments have faults or not is detected, and the fire grate segments without faults are set as middle fire grate segments;
or when the actually required heat is judged to be increased, the fire grate segment which provides more heat is preferentially used and set as the middle fire grate segment; and when the actual heat demand is reduced, preferentially using the fire grate segment which provides less heat as the middle fire grate segment.
5. The control method of the gas water heater according to any one of claims 1 to 4, wherein after the section of the fire grate which is currently burning is switched to the section of the intermediate fire grate, the section of the intermediate fire grate is switched to the section of the target fire grate after the combustion of the section of the intermediate fire grate is stabilized.
6. The method as claimed in any one of claims 1 to 5, wherein the step of obtaining the currently burning fire grate segment and the target fire grate segment comprises the steps of obtaining water flow, set water temperature and inlet water temperature of the gas water heater, calculating actual required heat according to the water flow, the set water temperature and the inlet water temperature, and obtaining the corresponding target fire grate segment according to the actual required heat.
7. A gas water heater using the control method as set forth in any one of claims 1 to 6, comprising:
the fire grate comprises a plurality of fire grate segments, wherein a fire transfer sheet is arranged between every two adjacent fire grate segments and used for transferring fire between every two adjacent fire grate segments;
the segment valve is used for controlling the connection and disconnection between the fire grate segment and the gas pipeline;
and the main control board is used for controlling the opening or closing of the sectional valve and is connected with the sectional valve.
8. The gas water heater of claim 7, including a storage device in which fire grate segment switching means are stored;
the storage device is integrated on the main control board;
or the memory is arranged independently and connected with the main control board.
9. The gas water heater of claim 7, wherein a flame detection device is provided for detecting the stability of combustion on the fire grate segment, the flame detection device being connected to the main control panel.
10. The gas water heater as claimed in claim 8, wherein a water temperature detecting means is provided for detecting the temperature of the inlet water, the water temperature detecting means being connected to the main control panel.
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| CN202111331481.0A CN114992876A (en) | 2021-11-11 | 2021-11-11 | Gas water heater and control method thereof |
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