CN114963544B - Water heater, control method thereof and computer readable storage medium - Google Patents
Water heater, control method thereof and computer readable storage medium Download PDFInfo
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- CN114963544B CN114963544B CN202110191119.1A CN202110191119A CN114963544B CN 114963544 B CN114963544 B CN 114963544B CN 202110191119 A CN202110191119 A CN 202110191119A CN 114963544 B CN114963544 B CN 114963544B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 702
- 238000000034 method Methods 0.000 title claims abstract description 71
- 230000001276 controlling effect Effects 0.000 claims description 33
- 230000001105 regulatory effect Effects 0.000 claims description 27
- 230000006698 induction Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 8
- 230000008569 process Effects 0.000 description 22
- 238000010438 heat treatment Methods 0.000 description 13
- 238000009835 boiling Methods 0.000 description 5
- 238000001816 cooling Methods 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- -1 at the moment Substances 0.000 description 1
- 238000003287 bathing Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000006071 cream Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 239000008236 heating water Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910001285 shape-memory alloy Inorganic materials 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 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
- F24H9/2035—Arrangement or mounting of control or safety devices for water heaters using fluid fuel
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- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)
Abstract
The invention discloses a control method of a water heater, wherein a water quantity adjusting part is arranged on a water inlet pipe of the water heater, and a water quantity adjusting device is arranged on the water quantity adjusting part; the control method comprises the following steps: when an opening instruction of a water switch is received, acquiring a time interval between a current time point and a closing time point of the water switch which is closed at the previous time; when the time interval is smaller than or equal to a first preset time interval, controlling an ignition needle of the water heater to discharge and opening a gas valve of the water heater; when the sensing needle senses a flame signal, the opening degree of the water quantity adjusting device is increased so as to increase the water inflow quantity of the water inlet pipe. The invention also discloses a water heater and a computer readable storage medium. The water heater can reduce water temperature fluctuation when boiled water is boiled for the second time in a short time, and improves the use effect of the water heater.
Description
Technical Field
The present invention relates to the field of water heating technology, and in particular, to a water heater, a control method thereof, and a computer readable storage medium.
Background
Along with the improvement of living standard, people demand more and more water, and the gas water heater gradually becomes one of the indispensable electrical appliances in people's life owing to the advantages of fast heating and the like.
The gas water heater needs to reach a certain condition to ignite, so the water switch operation and the ignition operation of the conventional gas water heater are separated, and the conventional starting process is as follows: after the water switch is turned on, the water flow signal is detected, the wind pressure signal is detected, when the wind pressure signal is stable, the ignition needle is controlled to discharge, then the gas valve is turned on, and the ignition is completed. It can be seen that there is a time difference between when the user switch is turned on and when the ignition is completed, then there will be cold water as the water coming out when the water switch is turned on, and hot water only after the ignition is completed.
Especially in the use gas heater in-process, when turning on again in the short time after closing water (the secondary boiled water in the short time), because there is the time difference in the process from water switch opening to the completion of igniting, can get into partial cold water in the outlet pipe before the completion of igniting, this will lead to the play water temperature to have obvious fluctuation, influences result of use.
Based on the above problems, a method is adopted in which a constant temperature bin is additionally arranged at the water inlet end of a water outlet pipe, and hot water in the constant temperature bin is used for buffering cold water entering in a time difference from the opening of a water switch to the completion of ignition. Although the constant temperature bin is additionally arranged to buffer part of cold water, the buffering effect is not good, and the water temperature fluctuation is still relatively large when the water consumption is large.
Disclosure of Invention
The invention mainly aims to provide a water heater, a control method thereof and a computer readable storage medium, and aims to solve the problem that in the use process of a gas water heater, when water is turned on again in a short time after the gas water heater is turned off, the fluctuation of the water outlet temperature is obvious, so that the use effect of hot water is poor.
In order to achieve the above purpose, the present invention provides a control method of a water heater, wherein a water inlet pipe of the water heater is provided with a water quantity adjusting part, and the water quantity adjusting part is provided with a water quantity adjusting device; the control method of the water heater comprises the following steps:
when an opening instruction of a water switch is received, acquiring a time interval between a current time point and a closing time point of the water switch which is closed at the previous time;
when the time interval is smaller than or equal to a first preset time interval, controlling an ignition needle of the water heater to discharge and opening a gas valve of the water heater;
when the sensing needle senses a flame signal, the opening degree of the water quantity adjusting device is increased so as to increase the water inflow quantity of the water inlet pipe, wherein the water inflow quantity of the water inlet pipe is larger than zero before the sensing needle senses the flame signal.
Optionally, the water cooling adjusting part includes a first flow channel and a second flow channel, the first flow channel or the second flow channel is provided with the water quantity adjusting device, after the step of increasing the opening of the water quantity adjusting device to increase the water inflow of the water inlet pipe, the water cooling adjusting part further includes:
when receiving the closing instruction of the water consumption switch, closing the valve of the water quantity regulating device;
Closing the gas valve.
Optionally, when the water quantity adjusting device is a normally open valve, the step of closing the valve of the water quantity adjusting device further includes:
and opening a valve of the water quantity regulating device when an opening instruction of the water switch is not received after a first preset time interval.
Optionally, when the time interval is less than or equal to a first preset time interval, the step of controlling the ignition needle of the water heater to discharge and opening the gas valve of the water heater includes:
when the time interval is smaller than or equal to a first preset time interval, acquiring the rotating speed of a fan of the water heater;
When the rotating speed of the fan is greater than or equal to the preset rotating speed, the ignition needle of the water heater is controlled to discharge and the gas valve of the water heater is controlled to be opened.
Optionally, after the step of controlling the ignition needle of the water heater to discharge and opening the gas valve of the water heater, the method further comprises:
And when the sensing needle cannot detect the flame signal, the gas valve is closed.
In order to achieve the above object, the present invention further provides a control method of a water heater, the control method of the water heater comprising the steps of:
When an opening instruction of a water switch is received, acquiring a time interval between a current time point and a closing time point when the water switch is closed at the previous time;
When the time interval is smaller than or equal to a first preset time interval, acquiring the fan rotating speed of the water heater;
When the rotating speed of the fan is greater than or equal to the preset rotating speed, the ignition needle of the water heater is controlled to discharge and the gas valve of the water heater is controlled to be opened.
Optionally, the step of controlling the ignition needle discharge of the water heater and opening the gas valve of the water heater comprises:
Controlling the ignition needle of the water heater to discharge, and detecting the variation of the current wind pressure of the water heater and the wind pressure before a second preset time interval;
And when the variation is smaller than or equal to a preset threshold value, opening a gas valve of the water heater.
Optionally, the control method of the water heater further comprises:
when the time interval is smaller than or equal to a first preset time interval, detecting the water inflow of a water inlet pipe of the water heater;
executing the step of acquiring the fan rotating speed of the water heater when the water inflow is larger than or equal to the preset water inflow;
When the water inflow is smaller than the preset water inflow, detecting the variation of the current wind pressure of the water heater and the wind pressure before a second preset time interval, and when the variation is smaller than or equal to a preset threshold value, controlling an ignition needle of the water heater to discharge and opening a gas valve of the water heater.
The invention also provides a water heater, which comprises a memory, a processor and a hot water control program stored in the memory and capable of running on the processor, wherein a water quantity adjusting part is arranged on a water inlet pipe of the water heater, the water quantity adjusting part comprises a first flow passage and a second flow passage, a water quantity adjusting device is arranged on the first flow passage or the second flow passage, the water quantity adjusting device is connected with the processor, and each step of the control method of the water heater is realized when the hot water control program is executed by the processor.
Furthermore, the present invention provides a computer-readable storage medium storing a hot water control program which, when executed by a processor, implements the steps of the control method of a water heater as described above.
The water heater, the control method thereof and the computer readable storage medium provided by the invention are characterized in that the water inflow amount of the water inlet pipe is controlled by arranging the water inflow amount regulating part on the water inflow pipe and arranging the water inflow amount regulating device on the water inflow amount regulating part, when an opening instruction of the water use switch is received, whether the boiled water is the secondary boiled water in a short time is determined by judging the time interval between the current time point and the closing time of the previous closing of the water use switch, if yes, the water inflow amount of the water inflow pipe is reduced before the ignition is completed based on the control of the water inflow amount regulating part, and the opening degree of the water inflow amount regulating device is increased after a flame signal is sensed. Therefore, before the ignition is completed, the water inflow based on the water inflow is small, and the quantity of cold water entering the heating part is small, so that the water temperature heated in the previous time can be prevented from being reduced, the water temperature fluctuation is reduced, and the use effect of the water heater is improved.
Drawings
FIG. 1 is a schematic diagram of a hardware architecture of a water heater according to an embodiment of the present invention;
FIG. 2 is a schematic view of the internal structure of the water heater according to the present invention;
FIG. 3 is a schematic cross-sectional view of a shut-off valve in the water heater of the present invention in an energized state;
FIG. 4 is a schematic cross-sectional view of a shut-off valve in the water heater of the present invention in an off state;
FIG. 5 is a schematic flow chart of a first embodiment of a control method of the water heater of the present invention;
FIG. 6 is a schematic diagram of a refinement flow of step S20 in a second embodiment of a control method of a water heater according to the present invention;
FIG. 7 is a flow chart of a third embodiment of a control method of a water heater according to the present invention.
The achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
The main solutions of the embodiments of the present invention are: the water inlet pipe of the water heater is provided with a water quantity adjusting part, the water quantity adjusting part is provided with a water quantity adjusting device, and when receiving an opening instruction of the water switch, the time interval between the current time point and the closing time point of the previous closing of the water switch is obtained; when the time interval is smaller than or equal to a first preset time interval, controlling an ignition needle of the water heater to discharge and opening a gas valve of the water heater; when the sensing needle senses the flame signal, the opening degree of the water quantity adjusting device is increased so as to increase the water inflow quantity of the water inlet pipe, wherein the water inflow quantity of the water inlet pipe is larger than zero before the sensing needle senses the flame signal.
As an implementation manner, a hardware environment architecture related to the control method of the water heater may be as shown in fig. 1.
The water heater related to the embodiment of the invention is a gas water heater.
Further, the water heater includes: a processor 101, such as a CPU, a memory 102, and a communication bus 103. Wherein the communication bus 103 is used to enable connected communication among the components.
The memory 102 may be a high-speed RAM memory or a stable memory (non-volatilememory), such as a disk memory.
It can be understood that the water inlet pipe of the water heater in the embodiment of the invention is provided with a water quantity adjusting part, the water quantity adjusting part comprises a first flow passage and a second flow passage, and at least one flow passage of the first flow passage and the second flow passage is provided with a water quantity adjusting device. In this embodiment, the water inflow is controlled by adjusting the sizes of the first flow channel and the second flow channel.
Further, the execution program of the control method of the water heater in the present embodiment may be stored as a separate program in a storage medium; and the processor 101 of the water heater may be configured to call the hot water control program stored in the memory 102 and perform the following operations:
when an opening instruction of a water switch is received, acquiring a time interval between a current time point and a closing time point of the water switch which is closed at the previous time;
when the time interval is smaller than or equal to a first preset time interval, controlling an ignition needle of the water heater to discharge and opening a gas valve of the water heater;
when the sensing needle senses a flame signal, the opening degree of the water quantity adjusting device is increased so as to increase the water inflow quantity of the water inlet pipe, wherein the water inflow quantity of the water inlet pipe is larger than zero before the sensing needle senses the flame signal.
In one embodiment, the processor 101 may be configured to call a hot water control program stored in the memory 102 and perform the following operations:
when receiving the closing instruction of the water consumption switch, closing the valve of the water quantity regulating device;
Closing the gas valve.
In one embodiment, the processor 101 may be configured to call a hot water control program stored in the memory 102 and perform the following operations:
and opening a valve of the water quantity regulating device when an opening instruction of the water switch is not received after a first preset time interval.
In one embodiment, the processor 101 may be configured to call a hot water control program stored in the memory 102 and perform the following operations:
when the time interval is smaller than or equal to a first preset time interval, acquiring the rotating speed of a fan of the water heater;
When the rotating speed of the fan is greater than or equal to the preset rotating speed, the ignition needle of the water heater is controlled to discharge and the gas valve of the water heater is controlled to be opened.
In one embodiment, the processor 101 may be configured to call a hot water control program stored in the memory 102 and perform the following operations:
And when the sensing needle cannot detect the flame signal, the gas valve is closed.
In one embodiment, the processor 101 may be configured to call a hot water control program stored in the memory 102 and perform the following operations:
When an opening instruction of a water switch is received, acquiring a time interval between a current time point and a closing time point when the water switch is closed at the previous time;
When the time interval is smaller than or equal to a first preset time interval, acquiring the fan rotating speed of the water heater;
When the rotating speed of the fan is greater than or equal to the preset rotating speed, the ignition needle of the water heater is controlled to discharge and the gas valve of the water heater is controlled to be opened.
In one embodiment, the processor 101 may be configured to call a hot water control program stored in the memory 102 and perform the following operations:
When an opening instruction of a water switch is received, acquiring a time interval between a current time point and a closing time point when the water switch is closed at the previous time;
When the time interval is smaller than or equal to a first preset time interval, acquiring the fan rotating speed of the water heater;
When the rotating speed of the fan is greater than or equal to the preset rotating speed, the ignition needle of the water heater is controlled to discharge and the gas valve of the water heater is controlled to be opened.
In one embodiment, the processor 101 may be configured to call a hot water control program stored in the memory 102 and perform the following operations:
Controlling the ignition needle of the water heater to discharge, and detecting the variation of the current wind pressure of the water heater and the wind pressure before a second preset time interval;
And when the variation is smaller than or equal to a preset threshold value, opening a gas valve of the water heater.
In one embodiment, the processor 101 may be configured to call a hot water control program stored in the memory 102 and perform the following operations:
when the time interval is smaller than or equal to a first preset time interval, detecting the water inflow of a water inlet pipe of the water heater;
executing the step of acquiring the fan rotating speed of the water heater when the water inflow is larger than or equal to the preset water inflow;
When the water inflow is smaller than the preset water inflow, detecting the variation of the current wind pressure of the water heater and the wind pressure before a second preset time interval, and when the variation is smaller than or equal to a preset threshold value, controlling an ignition needle of the water heater to discharge and opening a gas valve of the water heater.
Based on the hardware framework of the water heater, the embodiment of the control method of the water heater is provided.
In the first embodiment of the control method of the water heater provided by the invention, the water heater is a gas water heater, and particularly the purpose of heating water is achieved by heating cold water through gas. Referring to fig. 2 to 4, the water heater includes a heating portion 11, a water inlet pipe 12 and a water outlet pipe 13, wherein the heating portion 11 is communicated with the water inlet pipe 12 and the water outlet pipe 13, cold water flows from the water inlet pipe 12 to the heating portion 11, and flows out of the water outlet pipe 13 after being heated in the heating portion 11, so as to be used by a user to heat water for the user.
The water inlet pipe 12 is provided with a water quantity adjusting part 14, the water quantity adjusting part 14 comprises a first flow passage 143 and a second flow passage 144, and at least one of the first flow passage 143 and the second flow passage 144 is provided with a water quantity adjusting device. The water inlet pipe 12 adjusts the water inlet amount through the water amount adjusting part 14 so as to adjust the water inlet amount according to the use requirement.
It will be appreciated that the pipe diameters of the first flow channel 143 and the second flow channel 144 may be the same or different, specifically, in order to achieve steady flow under different water pressures, the pipe diameter of the first flow channel 143 may be set smaller to play a certain role in flow restriction, for example, the pipe diameter of the first pipe is smaller than that of the second flow channel 144, and the water volume adjusting device is disposed on the second flow channel 144, when the water volume demand of the user is smaller, the water volume adjusting device may be controlled to close the second flow channel 144, so that the second flow channel 144 is not conducted, cold water enters only through the first flow channel 143 with a small pipe diameter, the water volume is reduced, and based on the first flow channel 143 connected with the flow restriction, the water flow volume is smaller. When the water demand of the user is large, the water quantity adjusting device opens the second flow passage 144, and cold water enters through the first flow passage 143 and the second flow passage 144, so that the water flow rate is large.
Because the time difference exists between the opening of the water switch and the completion of ignition, when the water switch is just opened, the water entering from the water inlet pipe and the water discharged from the water outlet pipeline are cold water, hot water can not be discharged until the ignition is completed, and a user can wait for the discharge of hot water to start using water. However, in the process of bathing of the user, the situation that the water switch is turned off and then turned on (such as the process that the water switch is turned off and the bath cream is put on) is unavoidable. In the process of using the water heater, the water switch is turned off and then turned on again to form secondary boiled water in a short time, and the water in the water outlet pipeline is hot water because the time of the secondary boiled water being shorter than the time of the previous water switch off, but after the secondary boiled water is ignited, the water entering the water inlet pipe is still cold water, and the cold water neutralizes the water in the heating part or the water outlet pipeline, so that the temperature of the water outlet has obvious fluctuation (time-heating and time-cooling) and the using effect is influenced.
Based on the fact that the water inflow of the water heater can be adjusted, the embodiment combines the control of the water inflow of the water inlet pipe during secondary boiled water, so that the amount of cold water entering the water inlet pipe is reduced, fluctuation of water outlet temperature can be greatly reduced, and the heating effect of the water heater is improved.
Specifically, referring to fig. 5, the control process of the water heater includes the following steps:
step S10, receiving an opening instruction of a water switch, and acquiring a time interval between a current time point and a closing time point of the water switch which is closed at the previous time.
And step S20, when the time interval is smaller than or equal to a first preset time interval, controlling the ignition needle of the water heater to discharge and opening the gas valve of the water heater.
And step S30, when the sensing needle senses a flame signal, increasing the opening degree of the water quantity adjusting device so as to increase the water inflow quantity of the water inlet pipe.
Before the induction needle senses the flame signal, the water inflow amount of the water inlet pipe is larger than zero. In this way, it is ensured that a water flow signal can be detected before the water heater fires.
The water switch is a switch for boiling water or closing water on the water heater, and when the user opens the water switch, the user receives an opening instruction of the water switch. Acquiring a current time point and a closing time point when the water switch is closed at the previous time, determining a time interval between the current time point and the closing time point when the water switch is closed at the previous time, judging whether the time interval is smaller than or equal to a first preset time interval, if so, judging that the boiled water is boiled water for the second time (boiled water again in a short time after the water switch is closed). At this time, under the effect of the water quantity adjusting device, the water inflow quantity of the water inlet pipe is small, cold water can be reduced, and further the influence of excessive cold water quantity entering during secondary boiled water on water temperature fluctuation is prevented. Therefore, if the boiled water is determined to be secondary boiled water, the ignition needle of the water heater is controlled to discharge and the gas valve of the water heater is opened, so that the water heater is ignited and heated. And the opening of the water quantity regulating device is increased until the completion of ignition is detected, so that the water inflow quantity of the water inlet pipe is recovered, and at the moment, the water entering the water inlet pipe is heated and then discharged due to the completion of ignition, so that the water temperature cannot be influenced after the water quantity of the water inlet pipe is increased.
It is understood that the valve of the water quantity adjusting device is in a throttled state or in a closed state before boiling water. According to the embodiment, the water quantity adjusting device can be arranged on one of the first flow channel and the second flow channel, so that when the water quantity adjusting device is in a closed state, the water inlet pipe can be used for water inflow based on the flow channel without the water quantity adjusting device, a water flow signal can be detected before the water heater ignites, and the ignition requirement is met. The embodiment can also set up the water yield adjusting device on the first runner with the second runner, the water yield adjusting device is the choke valve, before the boiled water, the water yield adjusting device is in the throttle state, the inlet tube can be based on the throttle effect of water yield adjusting device, reduces the inflow of inlet tube, makes simultaneously the inflow of inlet tube is greater than zero for the rivers sensor can detect the rivers signal, satisfies the ignition requirement.
Or when the water quantity regulating devices are arranged on the first flow channel and the second flow channel, the water quantity regulating device positioned on the first flow channel is a throttle valve; the water quantity adjusting device on the second flow passage is the stop valve. Before the water switch is opened, the stop valve is in a closed state, the throttle valve is in a throttle state, the water inflow of the water inlet pipe is small, if the water inflow is secondary water when the water inflow is secondary water, the ignition needle of the water heater is controlled to discharge and the gas valve is opened, and after a flame signal is detected, the stop valve is opened to increase the water inflow of the water inlet pipe. The throttle valve on the first flow passage is one of a capillary tube, a flow limiting ring and a memory alloy. The ignition device has the function of stabilizing the flow during ignition, and avoids the influence of too small or too large water pressure on ignition.
When the time interval is larger than the first preset time interval, the fact that the time that the boiled water is turned off before the water switch is longer is indicated that the boiled water is not secondary boiled water, at the moment, water in the water outlet pipe may be cold water, and the problem of water temperature cannot be solved by reducing the water inflow of the cold water, so that the opening degree of the water inflow regulating device is increased, and meanwhile, the ignition needle of the water heater is controlled to discharge and the gas valve of the water heater is controlled to be opened, so that the water heater is ignited according to the maximum water inflow, and the problem that the ignition is influenced due to the fact that the water pressure is too small is avoided.
It should be noted that, the first preset time interval is 1min to 5min, and in a preferred embodiment, the first preset time interval is 3min. When boiled water is boiled again within 1-5 min, the water temperature fluctuation of the water heater can be smaller by controlling the water inflow and ignition of the water heater in the mode.
When the water quantity regulating device is a stop valve, the water quantity regulating device can be arranged on the first flow channel or the second flow channel only so as to ensure that at least one flow channel can have a water flow signal. Based on the above, the valve of the water quantity adjusting device is in a closed state before boiling water, and the implementation mode is as follows:
after the step of sensing the flame signal by the sensing needle and increasing the opening degree of the water quantity adjusting device so as to increase the water inflow quantity of the water inlet pipe, the method further comprises the following steps of:
Step S40, when receiving a closing instruction of the water switch, closing a valve of the water quantity adjusting device;
And S50, closing the gas valve.
That is, when the water is used for closing each time, the valve of the water quantity adjusting device is closed, so that at least one flow channel is in a closed state, and one flow channel is in an open state (in the preferred embodiment, the water quantity adjusting device is correspondingly arranged in the flow channel with a large pipe diameter), and if the boiled water is the secondary boiled water next time, the water inlet pipe can only enter water through one flow channel, so that the water inflow quantity of the water inlet pipe is reduced. If the boiled water is not secondary boiled water next time, then the valve of the water quantity regulating device is opened again, and the water inflow quantity of the water inlet pipe is increased again.
In this embodiment, when the water switch is turned off, the valve of the water quantity adjusting device is turned off, so that the water inlet channel of the water inlet pipe is reduced, and the water inlet channel of the water inlet pipe is reduced in advance, so that when the boiled water is started for the next time, the water inlet quantity of the water inlet pipe can be reduced in time, and the water temperature stability of the boiled water for the second time is improved.
It should be noted that the types of the water amount adjusting devices are different, and the corresponding ways of controlling the closing of the valves of the water amount adjusting devices are different.
In an optional embodiment, the stop valve is a normally closed stop valve, and the normally closed stop valve is based on a physical structure of the stop valve when the stop valve is in a closed state, that is, the stop valve closes the first flow channel or the second flow channel when the stop valve is in a power-off state. When the normally closed stop valve is electrified, the valve of the stop valve is opened based on electromagnetic action and is in an opened state, namely when the stop valve is electrified, the stop valve opens the first flow passage or the second flow passage. Therefore, when the closing instruction of the water consumption switch is received, the step of closing the valve of the water quantity regulating device is to control the water quantity regulating device to be powered off when the closing instruction of the water consumption switch is received. When the sensing needle senses a flame signal, the opening degree of the water quantity adjusting device is increased, so that the water inflow quantity of the water inlet pipe is increased, and when the sensing needle senses the flame signal, the water quantity adjusting device is controlled to be electrified.
The embodiment adopts the normally closed stop valve, and when the water switch is closed, the power is cut off, so that the stop valve can close the first flow passage or the second flow passage, and the electricity can be saved.
In still another alternative embodiment, the stop valve is a normally open stop valve, and the normally open stop valve is based on a physical structure of the stop valve when the stop valve is in an open state, that is, the stop valve opens the first flow channel or the second flow channel when the stop valve is in a power-off state. And when the normally open stop valve is electrified, the valve of the stop valve is opened based on electromagnetic action and is in a closed state, namely when the stop valve is electrified, the stop valve closes the first flow passage or the second flow passage. Therefore, when the closing instruction of the water switch is received, the step of closing the valve of the water quantity adjusting device is to control the water quantity adjusting device to be electrified so as to enable the water quantity adjusting device to close the first flow channel or the second flow channel when the closing instruction of the water switch is received. The step of increasing the opening of the water quantity adjusting device when the sensing needle senses a flame signal so as to increase the water inflow quantity of the water inlet pipe is to control the water quantity adjusting device to be powered off when the sensing needle senses the flame signal so as to open the first flow channel or the second flow channel.
In this embodiment, a normally open stop valve is adopted, when the water switch is turned off, the water quantity adjusting device is controlled to be electrified, so that the stop valve can close the first flow passage or the second flow passage, thereby reducing the water inlet flow passage of the water inlet pipe, however, the normally open stop valve needs to be electrified all the time to consume electric energy.
Based on this, this embodiment proposes a further embodiment, for example, when the water quantity adjusting device is a normally open valve, the step of closing the valve of the water quantity adjusting device further includes:
and after a first preset time interval, opening a valve of the water quantity regulating device when an opening instruction of the water switch is not received.
The first preset time interval is the same as the first preset time interval in the secondary boiled water, and the first preset time interval is also 1-5 min.
In this embodiment, the water quantity adjusting device is a normally open stop valve, and when the water switch is turned off, the water quantity adjusting device is controlled to be electrified, so that the valve of the water quantity adjusting device is turned off, and after the water quantity adjusting device is turned off for a first preset time interval, the water quantity adjusting device is controlled to be powered off, so that the valve of the water cooling adjusting device is turned on. Therefore, the water quantity adjusting device can be prevented from being in a power-on state all the time, and electric energy is consumed. In addition, based on the fact that an opening instruction of the water switch is not received in a first preset time interval, the fact that the boiled water is not boiled for the second time in a short time next time is indicated, the water inlet pipe is not required to be throttled at the moment, and therefore the water quantity adjusting device is controlled to be powered off.
In the embodiment of the invention, the water flow of the runner is regulated by arranging the water quantity regulating part on the water inlet pipe and arranging the water quantity regulating device on the water quantity regulating part, so that the control of the water inflow of the water inlet pipe is realized, when an opening instruction of the water switch is received, whether the boiled water is the secondary boiled water in a short time or not is determined through the time interval between the current time point and the closing time of the previous closing of the water switch, if yes, the water inflow of the water inlet pipe is reduced before the ignition is completed based on the control of the water quantity regulating part, and the opening of the water quantity regulating device is increased after a flame signal is sensed. Therefore, before the ignition is completed, the water inflow based on the water inflow is small, and the quantity of cold water entering the heating part is small, so that the water temperature heated in the previous time can be prevented from being reduced, the water temperature fluctuation is reduced, and the use effect of the water heater is improved.
Specifically, in this embodiment, by setting the first flow channel and the second flow channel, the water quantity adjusting device is set on at least one flow channel of the first flow channel and the second flow channel, and the switching control between the big water and the small water of the water inlet pipe is realized by combining the first flow channel and the second flow channel.
It can be appreciated that the water heater in this embodiment can control the ignition needle to discharge and open the gas valve for ignition based on the detected water flow signal when the wind pressure is stable. The ignition time can also be shortened based on the following second embodiment, and the inflow of cold water is further reduced based on the shortening of the ignition time, so that the fluctuation of the water temperature in the water heater is smaller and the hot water is more stable by combining the above embodiments.
Referring to fig. 6, the present invention provides a second embodiment of a control method of a water heater, where the step of controlling an ignition needle of the water heater to discharge and opening a gas valve of the water heater when the time interval is less than or equal to a first preset time interval includes:
step S21, when the time interval is smaller than or equal to a first preset time interval, acquiring the rotating speed of a fan of the water heater;
and S22, when the rotating speed of the fan is greater than or equal to a preset rotating speed, controlling an ignition needle of the water heater to discharge and opening a gas valve of the water heater.
In this embodiment, the water heater is provided with a sensor for detecting the rotation speed of the fan of the water heater, such as a hall sensor, and the rotation speed change in the running process of the fan can be detected based on the sensor. Based on when preset time interval is less than or equal to first preset time interval, then judge this boiled water and be the secondary boiled water in the short time, through obtaining the rotational speed of fan of water heater at this moment, and based on when the fan rotational speed is greater than or equal to preset rotational speed, promptly control the ignition needle of water heater discharges and opens the gas valve of water heater, for the technical scheme that the ignition needle discharges is controlled again when the exemplary technique needs wind pressure stabilization, this embodiment controls the ignition needle discharge in advance, has shortened the ignition time that whole ignition process used, so, can reduce the inflow of inlet tube in the ignition process, further reduce the influence of cold water to outlet pipe or the temperature of heating part in the ignition process.
The preset rotating speed is a critical rotating speed which can enable ignition to be successful and is calculated according to experiments, and when the rotating speed of the fan reaches the rotating speed, the ignition needle discharges to enable ignition to be successful. When the fan reaches the preset rotating speed, the air pressure at the position of the ignition needle is still not stable, so that the ignition needle is controlled to discharge in advance, and the ignition time used in the ignition process is shortened.
Further, in order to avoid gas leakage and influence indoor safety, after the step of controlling the ignition needle of the water heater to discharge and opening the gas valve of the water heater, the method further comprises:
And when the sensing needle cannot detect the flame signal, the gas valve is closed.
In the ignition process of the water heater, the ignition cannot be performed after the gas valve is opened possibly based on the influences of water pressure, wind pressure, gas and the like, at the moment, if the gas valve is kept in an opened state all the time, gas flows into a room, the life safety of a user can be influenced when the concentration of the gas in the room is too high, therefore, when a sensing needle senses no flame signal in a certain time interval, the current ignition is unsuccessful, and the gas valve is closed at the moment, so that gas leakage is avoided.
Referring to fig. 7, the present invention further provides a third embodiment of a control method of a water heater, where the control method controls the ignition time of the water heater to avoid the influence of the inflow of cold water on the water temperature in the pipe during the secondary boiled water. Specifically, the control method of the water heater comprises the following steps:
step S110, when an opening instruction of a water switch is received, acquiring a time interval between a current time point and a closing time point when the water switch is closed at the previous time;
step S120, when the time interval is smaller than or equal to a first preset time interval, acquiring the fan rotating speed of the water heater;
And step S130, when the rotating speed of the fan is greater than or equal to a preset rotating speed, controlling an ignition needle of the water heater to discharge and opening a gas valve of the water heater.
The water switch is a switch for boiling water or closing water on the water heater, and when the user opens the water switch, the user receives an opening instruction of the water switch. Acquiring a current time point and a closing time point when the water switch is closed at the previous time, determining a time interval between the current time point and the closing time point when the water switch is closed at the previous time, judging whether the time interval is smaller than or equal to a first preset time interval, if so, judging that the boiled water is boiled water for the second time (boiled water again in a short time after the water switch is closed).
In order to reduce fluctuation of hot water temperature in the water heater, when the boiled water is secondary boiled water, the fan rotating speed of the water heater is obtained, and based on the fact that the fan rotating speed is larger than or equal to the preset rotating speed, the ignition needle of the water heater is controlled to discharge and the gas valve of the water heater is opened.
Further, in the discharging process of the ignition needle, the fan rotates to enable the wind pressure of the position of the ignition needle to gradually tend to be stable, at the moment, the gas valve is opened and is easy to ignite, if the wind pressure is unstable, the air flow is easy to blow to the gas valve, abnormal ignition is easy to occur, and safety accidents are caused. Therefore, in this embodiment, the step of controlling the discharge of the ignition needle of the water heater and opening the gas valve of the water heater includes:
Controlling the ignition needle of the water heater to discharge, and detecting the variation of the current wind pressure of the water heater and the wind pressure before a second preset time interval;
And when the variation is smaller than or equal to a preset threshold value, opening a gas valve of the water heater.
In the process of controlling the discharge of the ignition needle of the water heater, detecting the difference value of the current air pressure in the hot period and the air pressure between the current air pressure and the second preset time interval, wherein the difference value is the variable quantity, and when the variable quantity is smaller, namely the variable quantity is smaller than a preset threshold value, judging that the air pressure at the position of the ignition needle is stable, and when the gas valve is opened, the air flow does not flow backwards, and the ignition is safe.
It can be understood that in this embodiment, when the wind pressure is not stable, the ignition needle is controlled to discharge, and in the process of discharging the ignition needle, the wind pressure also tends to be stable continuously, and in normal conditions, when the discharge is finished, the wind pressure also reaches to be stable, and the gas valve is opened at this time, so that the safe ignition can be ensured, the ignition needle is controlled to discharge in advance, and the ignition time of the whole ignition process can be shortened, thereby reducing the cold water quantity and the water temperature fluctuation.
In a further embodiment, based on the third embodiment, the control method of the water heater further includes:
when the time interval is smaller than or equal to a first preset time interval, detecting the water inflow of a water inlet pipe of the water heater;
executing the step of acquiring the fan rotating speed of the water heater when the water inflow is larger than or equal to the preset water inflow;
When the water inflow is smaller than the preset water inflow, detecting the variation of the current wind pressure of the water heater and the wind pressure before a second preset time interval, and when the variation is smaller than or equal to a preset threshold value, controlling an ignition needle of the water heater to discharge and opening a gas valve of the water heater.
In this embodiment, after determining that the boiled water is secondary boiled water based on the time interval, the water inflow of the water inlet pipe of the water heater is detected, where the water inflow may be different based on different water pressures, or different based on different adjustments of the water inflow of the water inlet pipe by the water inflow adjusting part on the water inlet pipe. Therefore, in the process of secondary boiling water, in order to reduce the temperature fluctuation of hot water in the water heater and ensure the ignition safety, the embodiment determines which mode to use for ignition through the water inflow amount of the water inlet pipe.
It should be noted that, in the present embodiment, the water heater has at least two ignition modes, as in the first ignition mode, as in the third embodiment, by obtaining the fan rotation speed of the water heater, when the fan rotation speed is greater than or equal to the preset rotation speed, the ignition needle of the water heater is controlled to discharge and the gas valve of the water heater is opened, so as to shorten the ignition time. The second ignition mode is as follows: detecting the variation of the current wind pressure of the water heater and the wind pressure before a second preset time interval, and controlling the ignition needle of the water heater to discharge and opening the gas valve of the water heater when the variation is smaller than or equal to a preset threshold value, namely controlling the ignition needle to discharge and opening the gas valve of the water heater after the wind pressure of the position of the ignition needle is stable.
When the water inflow is larger than or equal to the preset water inflow, the water inflow speed is high, at the moment, in order to avoid the fact that the influence of cold water coming from the water inlet pipe on hot water in the water heater is large when the water inflow is secondary boiled water in a short time, hot water fluctuation is large, and at the moment, a first ignition mode is adopted to shorten ignition time and reduce cold water inflow. And when the water inflow is smaller than the preset water inflow, the water inflow speed is low, and the second ignition mode is adopted to meet the requirement of safe ignition.
According to the embodiment, the proper ignition mode is selected for ignition by judging the water inflow, so that the fluctuation of the water temperature of the secondary boiled water in a short time is small, and the use environment of the water heater is safe.
In order to achieve the above object, the present invention also provides a water heater including a memory, a processor, and a hot water control program stored in the memory and executable on the processor, which when executed by the processor, implements the respective embodiments of the control method of the water heater as described above.
Furthermore, the present invention provides a computer-readable storage medium storing a hot water control program which, when executed by a processor, implements the respective embodiments of the control method of a water heater as described above.
The foregoing embodiment numbers of the present invention are merely for the purpose of description, and do not represent the advantages or disadvantages of the embodiments.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The foregoing description is only of the preferred embodiments of the present invention, and is not intended to limit the scope of the invention, but rather is intended to cover any equivalents of the structures or equivalent processes disclosed herein or in the alternative, which may be employed directly or indirectly in other related arts.
Claims (9)
1. The control method of the water heater is characterized in that a water inlet pipe of the water heater is provided with a water quantity adjusting part, the water quantity adjusting part is provided with a water quantity adjusting device, the water quantity adjusting part comprises a first flow passage and a second flow passage, and at least one flow passage of the first flow passage and the second flow passage is provided with the water quantity adjusting device; the control method of the water heater comprises the following steps:
when an opening instruction of a water switch is received, acquiring a time interval between a current time point and a closing time point of the water switch which is closed at the previous time;
when the time interval is smaller than or equal to a first preset time interval, controlling an ignition needle of the water heater to discharge and opening a gas valve of the water heater;
When the sensing needle senses a flame signal, the opening degree of the water quantity adjusting device is increased so as to increase the water inflow quantity of the water inlet pipe;
before the induction needle senses the flame signal, the water inflow of the water inlet pipe is larger than zero, and before boiled water, the water inflow of the water inlet pipe is reduced by the water inflow adjusting device.
2. The method of controlling a water heater according to claim 1, wherein after the step of increasing the opening degree of the water amount adjusting means to increase the water inflow amount of the water inlet pipe, comprising:
when receiving the closing instruction of the water consumption switch, closing the valve of the water quantity regulating device;
Closing the gas valve.
3. The method of controlling a water heater according to claim 2, wherein when the water amount adjusting means is a normally open valve, the step of closing the valve of the water amount adjusting means includes, after:
and opening a valve of the water quantity regulating device when an opening instruction of the water switch is not received after a first preset time interval.
4. The method of controlling a water heater according to claim 1, wherein after the step of controlling the ignition needle of the water heater to discharge and opening the gas valve of the water heater, comprising:
And when the sensing needle cannot detect the flame signal, the gas valve is closed.
5. The control method of the water heater is characterized in that a water inlet pipe of the water heater is provided with a water quantity adjusting part, the water quantity adjusting part is provided with a water quantity adjusting device, the water quantity adjusting part comprises a first flow passage and a second flow passage, and at least one flow passage of the first flow passage and the second flow passage is provided with the water quantity adjusting device; the control method of the water heater comprises the following steps:
When an opening instruction of a water switch is received, acquiring a time interval between a current time point and a closing time point when the water switch is closed at the previous time;
When the time interval is smaller than or equal to a first preset time interval, acquiring the fan rotating speed of the water heater;
when the rotating speed of the fan is greater than or equal to a preset rotating speed, controlling an ignition needle of the water heater to discharge and opening a gas valve of the water heater;
When the sensing needle senses a flame signal, the opening degree of the water quantity adjusting device is increased so as to increase the water inflow quantity of the water inlet pipe;
before the induction needle senses the flame signal, the water inflow of the water inlet pipe is larger than zero, and before boiled water, the water inflow of the water inlet pipe is reduced by the water inflow adjusting device.
6. The method of controlling a water heater according to claim 5, wherein the step of controlling the ignition needle of the water heater to discharge and opening the gas valve of the water heater comprises:
Controlling the ignition needle of the water heater to discharge, and detecting the variation of the current wind pressure of the water heater and the wind pressure before a second preset time interval;
And when the variation is smaller than or equal to a preset threshold value, opening a gas valve of the water heater.
7. The control method of a water heater as claimed in claim 5, wherein the control method of a water heater further comprises:
when the time interval is smaller than or equal to a first preset time interval, detecting the water inflow of a water inlet pipe of the water heater;
executing the step of acquiring the fan rotating speed of the water heater when the water inflow is larger than or equal to the preset water inflow;
When the water inflow is smaller than the preset water inflow, detecting the variation of the current wind pressure of the water heater and the wind pressure before a second preset time interval, and when the variation is smaller than or equal to a preset threshold value, controlling an ignition needle of the water heater to discharge and opening a gas valve of the water heater.
8. The water heater is characterized by comprising a memory, a processor and a hot water control program which is stored in the memory and can run on the processor, wherein a water quantity adjusting part is arranged on a water inlet pipe of the water heater, the water quantity adjusting part comprises a first flow passage and a second flow passage, the water quantity adjusting device is arranged on at least one flow passage of the first flow passage and the second flow passage, the water quantity adjusting device is connected with the processor, and the hot water control program realizes the steps of the control method of the water heater when being executed by the processor.
9. A computer-readable storage medium storing a hot water control program which, when executed by a processor, implements the steps of the control method of the water heater of claim 1.
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