CN114251840A - Control method of water heater and water heater - Google Patents
Control method of water heater and water heater Download PDFInfo
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- CN114251840A CN114251840A CN202111393755.9A CN202111393755A CN114251840A CN 114251840 A CN114251840 A CN 114251840A CN 202111393755 A CN202111393755 A CN 202111393755A CN 114251840 A CN114251840 A CN 114251840A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 271
- 238000000034 method Methods 0.000 title claims abstract description 25
- 230000002159 abnormal effect Effects 0.000 claims abstract description 21
- 238000002485 combustion reaction Methods 0.000 claims abstract description 13
- 238000001514 detection method Methods 0.000 claims description 16
- 239000000523 sample Substances 0.000 claims description 12
- 238000010438 heat treatment Methods 0.000 claims description 5
- 230000006698 induction Effects 0.000 claims description 3
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- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 239000003546 flue gas Substances 0.000 description 2
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- 230000033228 biological regulation Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
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- 239000002737 fuel gas Substances 0.000 description 1
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- 239000000463 material Substances 0.000 description 1
- 238000012163 sequencing technique 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
- 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
- F24H1/12—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 in which the water is kept separate from the heating medium
- F24H1/124—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 in which the water is kept separate from 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
- F24H9/20—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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Abstract
The invention discloses a control method of a water heater and the water heater, the control method comprises the following steps: acquiring and judging whether the water inflow M of the water heater is greater than the program starting flow, if so, turning to the next step, and if not, continuing to execute the step; acquiring a temperature parameter; calculating the load Q currently output by the water heater according to the acquired inflow water flow M and the acquired temperature parameter; comparing the reference value with the calculated load Q, and determining the fire row number required by ignition of the water heater and/or whether to send out a water inflow abnormal signal based on the comparison result; and controlling the water heater to perform ignition combustion according to the determined fire row number. According to the load Q currently output by the water heater, the invention can realize the automatic selection of the corresponding row number of the ignition fire, ensure the ignition stability and the quick constant temperature characteristic of the whole machine, and can realize the timely reminding of a user when the water inflow is abnormal.
Description
Technical Field
The invention relates to the technical field of water heaters, in particular to a control method of a water heater.
Background
The rapid heating constant temperature can promote the water heater effectively and use experience. The water heater of sectional type burning can effectual expansion water heater's temperature regulation scope, but because of adopting the problem that single fire row quantity was igniteed, when the row number switches over at different fires, on the one hand extension constant temperature time, on the other hand often leads to the gas combustion insufficient because of the bad phenomenon of passing a fire can appear, not only increases the gas consumption of system, influences complete machine constant temperature performance, still can make the CO content surge in the flue gas, can cause the incident emergence of flue gas poisoning under the not smooth condition of discharging fume.
Disclosure of Invention
The invention aims to solve one of the problems in the prior art at least to a certain extent, and therefore the invention provides a control method of a water heater, so that the corresponding row number of ignition fire can be automatically selected according to the current output load Q of the water heater, the ignition stability and the quick constant temperature characteristic of the whole machine are ensured, and a user can be reminded in time when the water inflow is abnormal.
According to the control method of the water heater, the control method is realized through the following technical scheme:
a control method of a water heater, the control method comprising the steps of:
s1, after the water heater is powered on, acquiring and judging whether the water inlet flow M of the water heater is larger than the program starting flow, if so, turning to the next step, otherwise, continuing to execute the step;
s2, acquiring temperature parameters, wherein the temperature parameters comprise water inlet temperature and water outlet temperature or set temperature;
s3, calculating the current output load Q of the water heater according to the acquired inflow water flow M and the acquired temperature parameter;
s4, comparing the reference value with the calculated load Q, and determining the fire row number required by the ignition of the water heater and/or whether to send out a water inflow abnormal signal based on the comparison result;
and S5, controlling the water heater to carry out ignition combustion according to the determined fire row number.
In some embodiments, the load Q is calculated by the following equation: q is 0.78M Δ T,
wherein, the delta T is the difference value between the water outlet temperature and the water inlet temperature, or the delta T is the difference value between the set temperature and the water inlet temperature.
In some embodiments, the fire row number includes two rows of fires, four rows of fires, and seven rows of fires, and the reference value includes a first interval;
the determining the fire bank number of the water heater based on the comparison result comprises: if the load Q is smaller than the minimum value of the first interval, controlling the water heater to ignite and burn according to two sparks, and sending a signal that the water inflow is too small; if the load Q is in the first interval range, controlling the water heater to ignite and burn according to two sparks; and if the load Q is larger than the maximum value of the first interval, controlling the water heater to ignite and burn according to four rows of fire or seven rows of fire.
In some embodiments, the reference value further comprises a second interval, a maximum value of the second interval being greater than a maximum value of the first interval, and a minimum value of the second interval being within the first interval;
the determining the fire bank number of the water heater based on the comparison further comprises: if the load Q is in the intersection range of the first interval and the second interval, controlling the water heater to ignite and burn according to two sparks; and if the load Q is in the second interval range and is larger than the maximum value of the first interval, controlling the water heater to ignite and burn according to four rows of fire or seven rows of fire.
In some embodiments, the reference value further comprises a third interval, a maximum value of the third interval being greater than a maximum value of the second interval, and a minimum value of the third interval being within the second interval;
the determining the fire bank number of the water heater based on the comparison further comprises: if the load Q is in the intersection range of the second interval and the third interval, controlling the water heater to ignite and burn according to four sparks; if the load Q is in the range of the third interval and is larger than the maximum value of the second interval, controlling the water heater to ignite and burn according to seven rows of fire; and if the load Q is larger than the maximum value in the third interval, controlling the water heater to ignite and burn according to seven rows of fire, and sending a signal that the water inflow is too large.
In some embodiments, the reference value further comprises an upper value; the determining the fire bank number of the water heater based on the comparison further comprises: if the load Q is larger than the upper limit value, the water heater is controlled to ignite and burn according to seven rows of fire, and a signal that the water inflow is too large is sent out.
In some embodiments, the control method further comprises the steps of: and S6, judging whether the ignition of the water heater is successful, if so, adjusting the heating load of the water heater through a PI D algorithm, and if not, sending an abnormal ignition alarm signal.
According to the control method of the water heater, the control method is realized through the following technical scheme:
a water heater to which the control method as described above is applied, the water heater comprising: a burner having a plurality of fire rows; the ignition induction device is arranged on the combustor and is used for igniting and inducing a flame signal; the combustor is selectively communicated with a gas source through the gas control valve; an inner water pipe; the water flow detection device is arranged on the water inlet section of the inner water pipe and is used for detecting the water inlet flow M; the temperature detection device is arranged on the inner water pipe and is at least used for detecting the water inlet temperature of the inner water pipe; a control panel having a temperature setting key; and the control device is electrically connected with the ignition sensing device, the gas control valve, the water flow detection device, the temperature detection device and the control panel respectively, and is used for calculating the load Q currently output by the water heater according to the inflow M, the inflow temperature and the outlet temperature or set temperature of the water heater and determining the fire row number required by ignition of the water heater and/or whether to send out an inflow abnormal signal according to the comparison result of the load Q and a reference value.
In some embodiments, the temperature detection device comprises an inlet water temperature probe and an outlet water temperature probe, the inlet water temperature probe is arranged on the inlet water section of the inner water pipe and is electrically connected with the control device for detecting the inlet water temperature; the water outlet temperature probe is arranged on the water outlet section of the inner water pipe and is electrically connected with the control device for detecting the temperature of water.
In some embodiments, the control panel further has a water inflow display area for prompting the L when the water inflow is too small and prompting the H when the water inflow is too large.
Compared with the prior art, the invention at least comprises the following beneficial effects:
1. according to the invention, the load Q currently output by the water heater is calculated according to the inflow and temperature parameters, and the fire row number required by ignition of the water heater and/or whether an inflow abnormal signal is sent out is determined according to the comparison result of the load Q and a reference value, so that the corresponding ignition fire row number is automatically selected according to the load Q currently output by the water heater, and the ignition stability and the rapid constant temperature characteristic of the whole machine are ensured;
2. whether the water inflow is abnormal or not can be determined according to the comparison result of the load Q and the reference value, and a user is timely reminded when the water inflow is abnormal, so that the user can timely adjust the water inflow of the water heater, and the use experience of the user is improved.
Drawings
FIG. 1 is a flow chart of a control method in an embodiment of the invention;
FIG. 2 is a schematic structural diagram of a water heater in an embodiment of the invention;
FIG. 3 is a schematic diagram of the ignition sensing device and the two banks of burners in an embodiment of the present invention;
FIG. 4 is a schematic diagram of an ignition sensing assembly and four burner banks in accordance with an embodiment of the present invention;
FIG. 5 is a schematic view of an ignition sensing device and a seven burner bank of an embodiment of the present invention in operation;
FIG. 6 is a diagram of the number of fire rows versus load in an embodiment of the present invention.
Detailed Description
The present invention is illustrated by the following examples, but the present invention is not limited to these examples. Modifications to the embodiments of the invention or equivalent substitutions of parts of technical features without departing from the spirit of the invention are intended to be covered by the scope of the claims of the invention.
Referring to fig. 2 to 3, the present embodiment provides a water heater including a burner 1, an ignition sensing device 2, a gas control valve 3, an inner water pipe 4, a water flow detection device 5, a temperature detection device (not shown in the drawings), a control panel 7, and a control device 8, wherein the burner 1 has a plurality of fire rows 11 to ensure that the burner 1 can perform staged combustion. Ignition induction system 2 sets up on combustor 1 for ignite to combustor 1, still be used for the response flame signal, so that according to flame signal, whether accurate discernment combustor 1 ignites successfully or whether has already been out of fire. The burner 1 is selectively communicated with a gas source through a gas control valve 3. The water inlet section of the inner water pipe 4 is communicated with tap water, and the water outlet section is connected with a universal water point through an outer hot water pipe. The water flow detection device 5 is arranged on the water inlet section of the inner water pipe 4 and used for detecting the water inlet flow M of the inner water pipe 4. The temperature detection device is arranged on the inner water pipe and is at least used for detecting the water inlet temperature of the inner water pipe 4. The control panel 7 has a temperature setting key 71 so that the user can set a set temperature of the water heater, which may be an outlet water temperature or a target heating temperature, through the temperature setting key 71.
The control device 8 is electrically connected with the ignition sensing device 2, the gas control valve 3, the water flow detection device 5, the temperature detection device and the control panel 7 respectively, the control device 8 is used for calculating the load Q output by the water heater at present according to the inflow M and the temperature parameter, and is also used for determining the fire row number required by ignition of the water heater and/or whether to send an inflow abnormal signal according to the comparison result of the load Q and a reference value. In this embodiment, the temperature parameters include an inlet water temperature and a set temperature or an outlet water temperature of the water heater, and the control device 8 is further configured to control the water heater to ignite and burn when the inlet water flow M is greater than the program start-up flow, and control the water heater to shut down when the inlet water flow M is less than or equal to the program start-up flow.
It can be seen that, in the water heater of the embodiment, the load Q currently output by the water heater is calculated according to the inflow and the temperature parameters, and the fire row number required by ignition of the water heater and/or whether the inflow abnormal signal is sent out are/is determined according to the comparison result of the load Q and the reference value, so that the corresponding ignition fire row number is automatically selected according to the load Q currently output by the water heater, the ignition stability and the rapid constant temperature characteristic of the whole machine are ensured, and insufficient gas combustion caused by the occurrence of poor fire transfer is avoided. In addition, whether the water inflow is abnormal or not can be determined according to the comparison result of the load Q and the reference value, and a user is timely reminded when the water inflow is abnormal, so that the user can timely adjust the water inflow of the water heater, and the use experience of the user is improved.
In the present embodiment, the number of rows or the number of fire rows 11 is seven. With the central fire row 11 being the first. Then the fire rows are sequentially sequenced from the middle to the left, the third fire row 11 close to the left is the second fire row, the second fire row 11 close to the left is the third fire row, and the fire row 11 closest to the left is the fourth fire row. And finally, sequencing the materials from the middle to the right side in sequence. Specifically, when the first and second fire rows 11 are ignited to burn, a first stage of the burner 1 is formed, in this case, a small fire, referring to fig. 3; when the first to the fourth fire rows 11 are ignited and combusted, a second section of the sectional combustion is formed, namely middle fire, and the reference figure 4 is referred to; when all the fire rows 11 are ignited to burn, a third stage of the staged combustion, in this case a big fire, is formed, referring to fig. 5. Thereby, the combustor 1 is provided with a three-stage combustion function, facilitating adjustment of the ignition load and/or the combustion load as required.
Referring to FIG. 6, optionally, the load of the first section of the combustor 1 ranges from 3 to 10kW, the load of the second section ranges from 8 to 20kW, and the load of the third section ranges from 15 to 30 kW. The first section load range is partially overlapped with the second section load range, and the second section load range is partially overlapped with the third section load range, so that the fire transmission reliability is ensured.
Referring to fig. 2, in the present embodiment, the temperature detecting device includes an inlet temperature probe 61 and an outlet temperature probe 62, the inlet temperature probe 61 is disposed on the inlet section of the inner water pipe 4 and electrically connected to the control device 8 for detecting the inlet temperature of the inner water pipe 4. The water outlet temperature probe 62 is disposed on the water outlet section of the inner water pipe 4 and electrically connected to the control device 4 for detecting the water outlet temperature of the inner water pipe 4.
In this embodiment, the control panel 7 further has a water inflow display area 72, and the water inflow display area 72 is used for prompting L when the water inflow is too small and also used for prompting H when the water inflow is too large, so that a user can know whether the water inflow of the water heater is abnormal or not through the water inflow display area 72. In addition, the control panel 7 is also integrated with a switch key and a temperature display area of the water heater.
Referring to fig. 1, the present embodiment further provides a control method of a water heater, including the following steps:
s1, after the water heater is powered on, acquiring and judging whether the water inlet flow M of the water heater is larger than the program starting flow, if so, turning to the next step, otherwise, continuing to execute the step;
specifically, the program boot flow is a fixed value set by the program. After the water heater is powered on, the control device 8 acquires the water inflow rate M of the inner water pipe through the water flow detection device 5, and judges whether the acquired water inflow rate M is greater than the program starting flow rate. If the water inflow rate M is larger than the program starting flow rate, the requirement that the user uses hot water at a water using point is indicated, and the water heater needs to be ignited and combusted. If the water inflow rate M is less than or equal to the program starting flow rate, the water consumption point is indicated to have no hot water demand, and the water heater is maintained in a standby state.
S2, acquiring temperature parameters, wherein the temperature parameters comprise water inlet temperature and water outlet temperature or set temperature;
s3, calculating the current output load Q of the water heater according to the acquired inflow water flow M and the acquired temperature parameter;
specifically, the load Q is calculated by the following formula: q is 0.78M Δ T. Wherein, the delta T is the difference value between the water outlet temperature and the water inlet temperature, or the delta T is the difference value between the set temperature and the water inlet temperature.
S4, comparing the reference value with the calculated load Q, and determining the fire row number required by the ignition of the water heater and/or whether to send out a water inflow abnormal signal based on the comparison result;
and S5, controlling the water heater to carry out ignition combustion according to the determined fire row number.
Therefore, when the inflow M is larger than the program starting flow, the load Q currently output by the water heater is calculated according to the inflow and the temperature parameters, and the fire row number required by ignition of the water heater and/or whether an abnormal inflow signal is sent out are/is determined according to the comparison result of the load Q and the reference value, so that the corresponding ignition fire row number is automatically selected according to the load Q currently output by the water heater, the ignition stability and the rapid constant temperature characteristic of the whole machine are ensured, and the insufficient combustion of gas caused by the poor flame transfer phenomenon is avoided. In addition, whether the water inflow is abnormal or not can be determined according to the comparison result of the load Q and the reference value, and a user is timely reminded when the water inflow is abnormal, so that the user can timely adjust the water inflow of the water heater, and the use experience of the user is improved.
Optionally, the fire row number includes two rows of fires, four rows of fires, and seven rows of fires. The reference value includes a first interval, which is a first stage load range of the combustor 1 in the present embodiment, i.e., the first interval is [3kW,10kW ]. The determining the fire bank number of the water heater based on the comparison result comprises:
and if the load Q is in the first interval range, namely the load Q belongs to [3kW,10kW ], controlling the water heater to ignite and burn in two sparks.
And if the load Q is larger than the maximum value of the first interval, namely the load Q is larger than 10kW, controlling the water heater to ignite and burn according to four rows of fire or seven rows of fire.
And if the load Q is smaller than the minimum value of the first interval, namely the load Q is smaller than 3kW, controlling the water heater to ignite and burn according to two rows of fire, and sending a signal that the water inflow is too small. From this, through the relation of the load Q that obtains according to the calculation and the minimum between the first interval, not only can the corresponding fire row number of arranging (two rows of fires promptly) of automatic selection to guarantee the ignition reliability and the stability of water heater, do benefit to and promote the quick constant temperature effect of water heater, can also realize the suggestion of inflow undersize, so that the user in time adjusts the inflow, guarantee the constant temperature performance of water heater better.
Optionally, the reference value of the present embodiment further includes a second interval, the maximum value of the second interval is greater than the maximum value of the first interval, and the minimum value of the second interval is within the range of the first interval, in the present embodiment, the second interval is a second stage load range of the combustor 1, that is, the second interval is [8kW,20kW ]. The determining the fire bank number of the water heater based on the comparison further comprises:
and if the load Q is in the intersection range of the first interval and the second interval, namely the load Q belongs to the intersection [8kW,10kW ], controlling the water heater to ignite and burn according to two sparks. Therefore, when the load Q is in the range of the overlapping area of different intervals, the number of fire rows required by ignition and combustion of the water heater is determined by taking the number of small fire rows as the preferred principle, so that the reduction of energy consumption is facilitated, and the waste of fuel gas is reduced.
And if the load Q is in the second interval range and is larger than the maximum value of the first interval, namely the load Q belongs to (10kW,20 kW), controlling the water heater to ignite and burn according to four rows of fire or seven rows of fire.
Optionally, the reference value of the present embodiment further includes a third interval, a maximum value of the third interval is greater than a maximum value of the second interval, and a minimum value of the third interval is within the second interval, in the present embodiment, the third interval is a third-stage load range of the combustor 1, that is, the third interval is [15kW,30kW ]. The determining the fire bank number of the water heater based on the comparison further comprises:
and if the load Q is in the intersection range of the second interval and the third interval, namely the load Q belongs to the intersection [15kW,20kW ], controlling the water heater to ignite and burn according to four rows of fire, and thus determining the row number of fire rows required by ignition and burning of the water heater by taking the row number of small fire rows as a preferred principle, which is beneficial to reducing energy consumption and reducing gas waste.
And if the load Q is in the third interval range and is larger than the maximum value of the second interval, namely the load Q belongs to (20kW,30 kW), controlling the water heater to ignite and burn according to seven rows of fire.
And if the load Q is larger than the maximum value of the third interval, namely the load Q is larger than 30kW, controlling the water heater to ignite and burn according to seven rows of fire, and sending a signal that the water inflow is too large. Therefore, according to the relationship between the load Q obtained by calculation and the maximum value of the third interval, the corresponding fire row number (namely seven rows of fire) can be automatically selected to ensure the ignition reliability and stability of the water heater, and the control panel 7 can prompt the user that the water inflow is too large, so that the user can adjust the water inflow in time, and the constant temperature performance of the water heater is better ensured.
In other embodiments, the third interval may be omitted or the second interval and the third interval may be omitted at the same time, at this time, in order to ensure that the water heater can monitor the problem of the excessive water inflow, the reference value may be designed to further include an upper limit value, where the upper limit value may be 30kW, or may also be 20kW, or may be any value from 20kW to 30 kW. When the control device 8 judges that the load Q is larger than the upper limit value, the water heater is controlled to ignite and burn according to seven fire discharges, and a signal that the water inflow is too large is sent.
Referring to fig. 1, in this embodiment, the control method may further include the steps of: and S6, judging whether the water heater is ignited successfully, if so, adjusting the heating load of the water heater through a PI D algorithm, and if not, sending an abnormal ignition alarm signal to remind a user in time, and simultaneously closing the gas control valve to avoid gas leakage.
What has been described above are merely some embodiments of the present invention. It will be apparent to those skilled in the art that various changes and modifications can be made without departing from the inventive concept thereof, and these changes and modifications can be made without departing from the spirit and scope of the invention.
Claims (10)
1. A control method of a water heater, characterized by comprising the steps of:
s1, after the water heater is powered on, acquiring and judging whether the water inlet flow M of the water heater is larger than the program starting flow, if so, turning to the next step, otherwise, continuing to execute the step;
s2, acquiring temperature parameters, wherein the temperature parameters comprise water inlet temperature and water outlet temperature or set temperature;
s3, calculating the current output load Q of the water heater according to the acquired inflow water flow M and the acquired temperature parameter;
s4, comparing the reference value with the calculated load Q, and determining the fire row number required by the ignition of the water heater and/or whether to send out a water inflow abnormal signal based on the comparison result;
and S5, controlling the water heater to carry out ignition combustion according to the determined fire row number.
2. The control method of a water heater according to claim 1, wherein the load Q is calculated by the following formula:
Q＝0.78M△T，
wherein, the delta T is the difference value between the water outlet temperature and the water inlet temperature, or the delta T is the difference value between the set temperature and the water inlet temperature.
3. The control method of a water heater according to claim 1, wherein the fire row number includes two rows of fires, four rows of fires, and seven rows of fires, and the reference value includes a first interval;
the determining the fire bank number of the water heater based on the comparison result comprises:
if the load Q is smaller than the minimum value of the first interval, controlling the water heater to ignite and burn according to two sparks, and sending a signal that the water inflow is too small;
if the load Q is in the first interval range, controlling the water heater to ignite and burn according to two sparks;
and if the load Q is larger than the maximum value of the first interval, controlling the water heater to ignite and burn according to four rows of fire or seven rows of fire.
4. The control method of a water heater according to claim 3, wherein the reference value further includes a second interval, a maximum value of the second interval is greater than a maximum value of the first interval, and a minimum value of the second interval is within the range of the first interval;
the determining the fire bank number of the water heater based on the comparison further comprises:
if the load Q is in the intersection range of the first interval and the second interval, controlling the water heater to ignite and burn according to two sparks;
and if the load Q is in the second interval range and is larger than the maximum value of the first interval, controlling the water heater to ignite and burn according to four rows of fire or seven rows of fire.
5. The control method of a water heater according to claim 4, wherein the reference value further includes a third interval, a maximum value of the third interval is greater than a maximum value of the second interval, and a minimum value of the third interval is within the second interval;
the determining the fire bank number of the water heater based on the comparison further comprises:
if the load Q is in the intersection range of the second interval and the third interval, controlling the water heater to ignite and burn according to four sparks;
if the load Q is in the range of the third interval and is larger than the maximum value of the second interval, controlling the water heater to ignite and burn according to seven rows of fire;
and if the load Q is larger than the maximum value in the third interval, controlling the water heater to ignite and burn according to seven rows of fire, and sending a signal that the water inflow is too large.
6. The control method of a water heater according to claim 3 or 4, wherein the reference value further includes an upper limit value; the determining the fire bank number of the water heater based on the comparison further comprises:
if the load Q is larger than the upper limit value, the water heater is controlled to ignite and burn according to seven rows of fire, and a signal that the water inflow is too large is sent out.
7. The control method of a water heater according to any one of claims 1 to 5, further comprising the steps of:
and S6, judging whether the water heater is ignited successfully, if so, adjusting the heating load of the water heater through a PID algorithm, and if not, sending an ignition abnormity alarm signal.
8. A water heater to which the control method according to any one of claims 1 to 7 is applied, the water heater comprising:
a burner having a plurality of fire rows;
the ignition induction device is arranged on the combustor and is used for igniting and inducing a flame signal;
the combustor is selectively communicated with a gas source through the gas control valve;
an inner water pipe;
the water flow detection device is arranged on the water inlet section of the inner water pipe and is used for detecting the water inlet flow M;
the temperature detection device is arranged on the inner water pipe and is at least used for detecting the water inlet temperature of the inner water pipe;
a control panel having a temperature setting key;
and the control device is electrically connected with the ignition sensing device, the gas control valve, the water flow detection device, the temperature detection device and the control panel respectively, and is used for calculating the load Q currently output by the water heater according to the inflow M, the inflow temperature and the outlet temperature or set temperature of the water heater and determining the fire row number required by ignition of the water heater and/or whether to send out an inflow abnormal signal according to the comparison result of the load Q and a reference value.
9. The water heater of claim 8, wherein the temperature detecting device comprises an inlet water temperature probe and an outlet water temperature probe, the inlet water temperature probe is arranged on the inlet section of the inner water pipe and electrically connected with the control device for detecting the inlet water temperature; the water outlet temperature probe is arranged on the water outlet section of the inner water pipe and is electrically connected with the control device for detecting the temperature of water.
10. The water heater as claimed in claim 8, wherein the control panel further has a water inflow display area for indicating L when the water inflow is too small and H when the water inflow is too large.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202111393755.9A CN114251840A (en) | 2021-11-23 | 2021-11-23 | Control method of water heater and water heater |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115371266A (en) * | 2022-08-25 | 2022-11-22 | 珠海格力电器股份有限公司 | Wall-mounted furnace and control method and device thereof |
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| JP2002174420A (en) * | 2000-12-06 | 2002-06-21 | Osaka Gas Co Ltd | Combustion apparatus |
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| CN115371266A (en) * | 2022-08-25 | 2022-11-22 | 珠海格力电器股份有限公司 | Wall-mounted furnace and control method and device thereof |
| CN115371266B (en) * | 2022-08-25 | 2024-05-24 | 珠海格力电器股份有限公司 | Wall-mounted furnace, control method and device of wall-mounted furnace |
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