CN114963544A - 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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- CN114963544A CN114963544A CN202110191119.1A CN202110191119A CN114963544A CN 114963544 A CN114963544 A CN 114963544A CN 202110191119 A CN202110191119 A CN 202110191119A CN 114963544 A CN114963544 A CN 114963544A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 649
- 238000000034 method Methods 0.000 title claims abstract description 76
- 230000006698 induction Effects 0.000 claims abstract description 12
- 230000000694 effects Effects 0.000 abstract description 6
- 230000001276 controlling effect Effects 0.000 description 21
- 230000008569 process Effects 0.000 description 20
- 238000009835 boiling Methods 0.000 description 18
- 238000010438 heat treatment Methods 0.000 description 15
- 230000033228 biological regulation Effects 0.000 description 7
- 230000008859 change Effects 0.000 description 6
- 230000009471 action Effects 0.000 description 4
- 230000005611 electricity Effects 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 239000000872 buffer Substances 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000003287 bathing Methods 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 239000003034 coal gas Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000010304 firing 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
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001105 regulatory effect 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
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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
Abstract
The invention discloses 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 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 previous closing of the water switch; 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 induction needle induces the flame signal, the opening degree of the water quantity adjusting device is increased so as to increase the water inflow 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 water is boiled for the second time in a short time, and improves the using effect of the water heater.
Description
Technical Field
The invention relates to the technical field of water heating, 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 for water, and gas heater is one of the essential electrical apparatus in people's life owing to possess advantages such as heating soon.
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 comprises the following steps: after the water switch is turned on, a water flow signal is detected firstly, then a wind pressure signal is detected, after the wind pressure signal is stable, the ignition needle is controlled to discharge, then the gas valve is turned on, and then ignition is finished. Therefore, the time difference exists between the time when the user switch is turned on and the time when the ignition is finished, so that the water discharged when the water switch is turned on is cold water, and hot water exists after the ignition is finished.
Especially, in the process of using the gas water heater, when the water is turned on within a short time after the water is turned off (secondary boiled water within a short time), because the time difference exists between the turning-on of the water switch and the completion of ignition, part of cold water can enter the water outlet pipe before the ignition is completed, the water outlet temperature is obviously fluctuated, and the use effect is influenced.
Based on the above problems, a commonly adopted method is to additionally arrange a constant temperature chamber at the water inlet end of the water outlet pipe, and hot water in the constant temperature chamber buffers cold water entering at the time difference between the time when the water switch is turned on and the time when the ignition is finished. Although the constant temperature bin is additionally arranged to buffer partial cold water, the buffering effect is not good, and the water temperature fluctuation is still 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 when the water heater is turned on again within a short time after being turned off in the use process of a gas water heater, the fluctuation of the outlet water temperature is obvious, so that the use effect of hot water is poor.
In order to achieve the purpose, the 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 a water quantity adjusting device is arranged on the water quantity adjusting part; 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 previous closing of the water switch;
when the time interval is less 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 flame signal is sensed by the sensing needle, the opening degree of the water quantity adjusting device is increased to increase the water inflow of the water inlet pipe, wherein the water inflow of the water inlet pipe is greater than zero before the flame signal is sensed by the sensing needle.
Optionally, the water-cooling adjustment portion includes a first runner and a second runner, the first runner or the second runner is provided with the water amount adjustment device, the opening degree of the water amount adjustment device is increased to increase the water inflow of the water inlet pipe, and after the step, the water-cooling adjustment portion further includes:
when a closing instruction of the water consumption switch is received, closing a valve of the water quantity adjusting device;
and closing the gas valve.
Optionally, when the water amount adjusting device is a normally open valve, after the step of closing the valve of the water amount adjusting device, the method further comprises:
and when the opening instruction of the water consumption switch is not received after the first preset time interval, opening the valve of the water quantity adjusting device.
Optionally, the step of controlling the ignition needle of the water heater to discharge and open the gas valve of the water heater when the time interval is less than or equal to a first preset time interval comprises:
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 when the rotating speed of the fan is greater than or equal to the preset rotating speed, controlling an ignition needle of the water heater to discharge and opening a gas valve of the water heater.
Optionally, after the steps 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 flame signal cannot be detected by the sensing needle, closing the gas valve.
In order to achieve the above object, the present invention further provides a control method of a water heater, including the steps of:
when an opening instruction of a water using switch is received, acquiring a time interval between a current time point and a closing time point when the water using switch is closed last time;
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 when the rotating speed of the fan is greater than or equal to the preset rotating speed, controlling an ignition needle of the water heater to discharge and opening a gas valve of the water heater.
Optionally, the step of controlling the ignition needle of the water heater to discharge and the step of opening the gas valve of the water heater comprises:
controlling an ignition needle of the water heater to discharge, and detecting the variation of the current air pressure of the water heater and the air pressure before a second preset time interval;
and when the variable quantity 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;
when the water inflow is greater than or equal to a preset water amount, executing the step of acquiring the rotating speed of the fan of the water heater;
when the inflow is less than the preset water amount, the current wind pressure of the water heater and the wind pressure before the second preset time interval are detected, and when the variable quantity is less than or equal to a preset threshold value, the ignition needle of the water heater is controlled to discharge and the gas valve of the water heater is opened.
The invention also provides a water heater, which comprises 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, 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 the hot water control program is executed by the processor to realize the steps of the control method of the water heater.
Furthermore, the present invention also 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 the water heater as described above.
The invention provides a water heater, a control method thereof and a computer readable storage medium, wherein a water quantity adjusting part is arranged on a water inlet pipe, and a water quantity adjusting device is arranged on the water quantity adjusting part to adjust the water flow of the water inlet pipe so as to realize the control of the water inlet quantity of the water inlet pipe. So, before the completion of lighting a fire, the inflow based on the inflow is little, and the cold water that gets into heating portion then is few, can avoid reducing the temperature of previous heating this moment, and it is undulant to reduce the temperature, improves the result of use of water heater.
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 of the present invention;
FIG. 3 is a schematic cross-sectional view of a shut-off valve in a water heater according to the present invention in the energized state;
FIG. 4 is a schematic cross-sectional view of a shut-off valve in a water heater according to the present invention in a de-energized state;
FIG. 5 is a schematic flow chart of a first embodiment of a control method for a water heater according to the present invention;
FIG. 6 is a detailed flowchart of step S20 in the second embodiment of the control method of the water heater according to the present invention;
FIG. 7 is a flow chart of a third embodiment of the control method of the water heater of the present invention.
The implementation, functional features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The main solution of the embodiment of the invention is as follows: a water quantity adjusting part is arranged on a water inlet pipe of the water heater, a water quantity adjusting device is arranged on the water quantity adjusting part, and when an opening instruction of a water switch is received, 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 induction needle senses the flame signal, the opening degree of the water quantity adjusting device is increased to increase the water inflow of the water inlet pipe, wherein the water inflow of the water inlet pipe is larger than zero before the induction needle senses the flame signal.
As one implementation mode, the control method of the water heater relates to a hardware environment architecture which can be shown in FIG. 1.
The water heater related to the embodiment scheme of the invention is a gas water heater.
Further, the water heater includes: a processor 101, e.g. a CPU, a memory 102, a communication bus 103. Wherein a communication bus 103 is used for enabling the connection communication between these components.
The memory 102 may be a high-speed RAM memory or a non-volatile memory (e.g., a disk memory).
It can be understood that, in the water heater of the embodiment of the present invention, the water inlet pipe is provided with the water quantity adjusting portion, the water quantity adjusting portion includes a first flow passage and a second flow passage, and at least one of the first flow passage and the second flow passage is provided with the water quantity adjusting device. The embodiment realizes the control of the water inflow by adjusting the sizes of the first flow passage and the second flow passage.
Further, the execution program of the control method of the water heater in the present embodiment may be stored in a storage medium as an independent program; 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 previous closing of the water switch;
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 flame signal is sensed by the sensing needle, the opening degree of the water quantity adjusting device is increased to increase the water inflow of the water inlet pipe, wherein the water inflow of the water inlet pipe is greater than zero before the flame signal is sensed by the sensing needle.
In one embodiment, processor 101 may be configured to invoke a hot water control program stored in memory 102 and perform the following operations:
when a closing instruction of the water consumption switch is received, closing a valve of the water quantity adjusting device;
and closing the gas valve.
In one embodiment, processor 101 may be configured to invoke a hot water control program stored in memory 102 and perform the following operations:
and when the opening instruction of the water consumption switch is not received after the first preset time interval, opening the valve of the water quantity adjusting device.
In one embodiment, processor 101 may be configured to invoke a hot water control program stored in 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;
and when the rotating speed of the fan is greater than or equal to the preset rotating speed, controlling an ignition needle of the water heater to discharge and opening a gas valve of the water heater.
In one embodiment, processor 101 may be configured to invoke a hot water control program stored in memory 102 and perform the following operations:
and when the flame signal cannot be detected by the sensing needle, closing the gas valve.
In one embodiment, processor 101 may be configured to invoke a hot water control program stored in memory 102 and perform the following operations:
when an opening instruction of a water using switch is received, acquiring a time interval between a current time point and a closing time point when the water using switch is closed last time;
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 when the rotating speed of the fan is greater than or equal to the preset rotating speed, controlling an ignition needle of the water heater to discharge and opening a gas valve of the water heater.
In one embodiment, processor 101 may be configured to invoke a hot water control program stored in memory 102 and perform the following operations:
when an opening instruction of a water using switch is received, acquiring a time interval between a current time point and a closing time point when the water using switch is closed last time;
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 when the rotating speed of the fan is greater than or equal to the preset rotating speed, controlling an ignition needle of the water heater to discharge and opening a gas valve of the water heater.
In one embodiment, processor 101 may be configured to invoke a hot water control program stored in memory 102 and perform the following operations:
controlling an ignition needle of the water heater to discharge, and detecting the variation of the current air pressure of the water heater and the air pressure before a second preset time interval;
and when the variable quantity is smaller than or equal to a preset threshold value, opening a gas valve of the water heater.
In one embodiment, processor 101 may be configured to invoke a hot water control program stored in 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;
when the water inflow is greater than or equal to a preset water amount, executing the step of acquiring the rotating speed of the fan of the water heater;
when the inflow is less than the preset water amount, the current wind pressure of the water heater and the wind pressure before the second preset time interval are detected, and when the variable quantity is less than or equal to a preset threshold value, the ignition needle of the water heater is controlled to discharge and the gas valve of the water heater is opened.
Based on the hardware architecture 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, 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 the cold water is heated in the heating portion 11 and then flows out from the water outlet pipe 13 for a user to use, so as to heat water for the user.
The water inlet pipe 12 is provided with a water amount adjusting part 14, the water amount adjusting part 14 includes a first flow channel 143 and a second flow channel 144, and at least one of the first flow channel 143 and the second flow channel 144 is provided with a water amount adjusting device. The water inlet pipe 12 adjusts the amount of inlet water through the water amount adjusting part 14, so as to adjust the amount of inlet water according to the use requirement.
It can be understood that, in this embodiment, the pipe diameters of the first flow passage 143 and the second flow passage 144 may be the same or different, and specifically, in order to achieve stable flow under different water pressures, the pipe diameter of the first flow passage 143 may be set to be smaller to play a certain role in limiting the flow, for example, the pipe diameter of the first pipe is smaller than the pipe diameter of the second flow passage 144, and the water amount adjusting device is disposed on the second flow passage 144, and when the user has a smaller demand for water amount, the water amount adjusting device may be controlled to close the second flow passage 144, so that the second flow passage 144 is not conducted, and cold water enters only through the first flow passage 143 with a smaller pipe diameter, so as to reduce the water amount, and the water flow is smaller based on the fact that the first flow passage 143 is connected with a throttle. When the water demand of the user is large, the water quantity adjusting device opens the second flow passage 144, cold water enters through the first flow passage 143 and the second flow passage 144, and the water flow is large.
Because the time difference exists between the process of turning on the water switch and the process of finishing ignition, when the water switch is just turned on, water entering the water inlet pipe and water discharged from the water outlet pipeline are both cold water, hot water cannot be discharged until ignition is finished, and a user can wait for the hot water to be discharged before starting water use. However, in the process of bathing, the user inevitably turns on the water switch after turning off the water switch (such as turning off the water switch and applying shower gel). In the process of using the water heater, the water switch is closed and then the water is turned on within a short time to form secondary boiled water, the time of closing the water is short before the secondary boiled water is started, the water in the water outlet pipeline is hot water, however, after the secondary boiled water is boiled and before the ignition is finished, the cold water entering the water inlet pipe still is cold water, the cold water can neutralize the water on the heating part or the water outlet pipeline, the water outlet temperature has obvious fluctuation (is hot and cold), and the use effect is influenced.
Based on the fact that the water inflow of the water heater in the embodiment of the invention can be adjusted, the embodiment combines the control of the water inflow of the water inlet pipe during secondary water boiling to reduce the amount of cold water entering the water inlet pipe, so that the fluctuation of the 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:
and step S10, receiving an opening instruction of the water switch, and acquiring the time interval between the current time point and the closing time point of the previous closing of the water switch.
And step S20, 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.
And step S30, when the induction needle induces the flame signal, the opening degree of the water quantity adjusting device is increased so as to increase the water inflow of the water inlet pipe.
Wherein, before the flame signal is sensed by the sensing needle, the water inflow of the water inlet pipe is greater than zero. In this manner, it is ensured that a water flow signal can be detected before the water heater is fired.
The water using switch is a switch used for boiling water or turning off water on the water heater, and when the water using switch is turned on by a user, an opening instruction of the water using switch is received. The method comprises the steps of obtaining a current time point and a closing time point when a water switch is closed for the previous time, determining a time interval between the current time point and the closing time point when the water switch is closed for the previous time, judging whether the time interval is smaller than or equal to a first preset time interval, and if so, judging that the boiled water is boiled for the second time (the boiled water is boiled again within a short time after the water switch is closed). At the moment, under the action of the water quantity adjusting device, the water inlet quantity of the water inlet pipe is small, the entering of cold water can be reduced, and further the phenomenon that the water temperature fluctuation is influenced due to the fact that the entering cold water quantity is too large during secondary water boiling is prevented. Therefore, if the boiled water is determined to be the 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 to heat. Until detecting the ignition and accomplishing the back, increase water regulation apparatus's aperture again to resume the inflow of inlet tube, at this moment, because the ignition is accomplished, the water that the inlet tube got into is discharged again after all being heated, therefore can not influence the temperature after the water yield increase of inlet tube.
It will be appreciated that the valve of the water volume regulating device is in a throttled state or in a closed state before boiling water. In this embodiment, the water quantity adjusting device may be disposed 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 may feed water based on the flow channel where the water quantity adjusting device is not disposed, and the water heater may detect a water flow signal before ignition, so as to meet the ignition requirement. This embodiment can also be in first runner with all set up on the second runner water regulation apparatus, water regulation apparatus is the choke valve, before the boiling water, water regulation apparatus is in throttle state, the inlet tube can be based on water regulation apparatus's throttle effect 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 requirement of igniteing.
Or when the water quantity adjusting devices are arranged on the first flow channel and the second flow channel, the water quantity adjusting devices on the first flow channel are throttle valves; the water amount adjusting device positioned on the second flow passage is the stop valve. Before the water using switch is opened, the stop valve is in a closed state, the throttle valve is in a throttling state, the water inflow of the water inlet pipe is small, if the water is boiled for the second time, the ignition needle of the water heater is controlled to discharge electricity 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 throttle ring and a memory alloy. The ignition device has the function of stabilizing the flow during ignition, and avoids the influence on ignition caused by too small or too large water pressure.
When the time interval is greater than the first preset time interval, it is described that the time for the current boiled water to be closed for the previous time by the water switch is longer, that is, the current boiled water is not the secondary boiled water, and at this time, the water in the water outlet pipe may already be cold water, and the problem of the water temperature cannot be solved by reducing the cold water inflow, so that the opening degree of the water amount adjusting device is increased, and at the same time, 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 according to the maximum inflow, and the ignition is prevented from being influenced by the over-low water pressure.
It should be noted that the size of the first preset time interval is 1min to 5min, and in a preferred embodiment, the size of the first preset time interval is 3 min. Namely when the water is boiled again within 1-5 min, the water inflow of the water heater is controlled and the ignition is controlled in the above way, so that the fluctuation of the water temperature of the water heater is small.
When the water quantity adjusting device is a stop valve, the water quantity adjusting 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 this, the realization that the valve of the water quantity adjusting device is in a closed state before boiling water is as follows:
the flame signal is induced at the response needle, the increase water regulation apparatus's aperture to the increase after the step of the inflow of inlet tube, still include:
step S40, when receiving the closing instruction of the water switch, closing the valve of the water quantity adjusting device;
and step S50, closing the gas valve.
That is, when the water is used, the valve of the water quantity adjusting device is closed each time, so that at least one flow channel is in a closed state, and one flow channel is in an open state (in a preferred embodiment, the flow channel with a large pipe diameter is correspondingly provided with the water quantity adjusting device), if the boiled water is the second boiled water, the water inlet pipe can only feed water through one flow channel, and the water inlet quantity of the water inlet pipe is reduced. And if the next boiled water is not the secondary boiled water, opening the valve of the water quantity adjusting device and increasing the water inflow of the water inlet pipe.
In this embodiment, closing during the water switch, then close water regulation apparatus's valve for the inhalant canal of inlet tube diminishes, diminishes the inhalant canal of inlet tube in advance, makes next time boiling water be when the secondary begins, can in time reduce the inflow of inlet tube, improves the temperature stability of secondary boiling water.
It should be noted that the water volume adjusting device is different in type and the way of controlling the valve of the water volume adjusting device to close is different.
In an optional embodiment, the stop valve is a normally closed stop valve, and when the normally closed stop valve is powered off, the valve of the stop valve is in a closed state based on the physical structure action of the stop valve, that is, when the power is off, the stop valve closes the first flow passage or the second flow passage. When the normally closed stop valve is electrified, the valve of the stop valve is opened based on the electromagnetic action, and the stop valve is in an open 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 adjusting device is to control the water quantity adjusting device to be powered off when the closing instruction of the water consumption switch is received. When the induction needle senses a flame signal, the opening degree of the water quantity adjusting device is increased, and the step of increasing the water inflow of the water inlet pipe is to control the water quantity adjusting device to be electrified when the induction needle senses the flame signal.
This embodiment adopts normally closed stop valve, cuts off the power supply when the water switch is closed, can make the stop valve close first runner or the second runner can save the power consumption again.
In another optional embodiment, the stop valve is a normally open stop valve, and when the normally open stop valve is in a power failure, based on the physical structure of the stop valve, the valve of the stop valve is in an open state, that is, when the power failure occurs, the stop valve opens the first flow passage or the second flow passage. 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 that the water quantity adjusting device closes the first flow passage or the second flow passage when the closing instruction of the water switch is received. When the induction needle senses a flame signal, the opening degree of the water quantity adjusting device is increased to increase the water inflow of the water inlet pipe, and the water quantity adjusting device is controlled to be powered off to open the first flow channel or the second flow channel when the induction needle senses the flame signal.
In this embodiment, adopt normally open stop valve, when closing with the water switch, control water yield adjusting device is gone up the electricity, can make the stop valve is closed first runner or the second runner to reduce the water inlet runner of inlet tube, however normally open stop valve need be power-on control all the time, consumes the electric energy.
In this respect, this embodiment provides a further embodiment, wherein, if the water amount adjusting device is a normally open valve, after the step of closing the valve of the water amount adjusting device, the method further comprises:
and after the first preset time interval, when the opening instruction of the water use switch is not received, opening the valve of the water quantity adjusting device.
Wherein the first preset time interval is the same as the first preset time interval in the secondary water boiling judgment, and the first preset time interval is 1-5 min.
That is, in this embodiment, the water amount adjusting device is a normally open stop valve, and when the water switch is closed, the water amount adjusting device is controlled to be powered on, so that the valve of the water amount adjusting device is closed, and after the water amount adjusting device is closed for a first preset time interval, the water amount adjusting device is controlled to be powered off, so that the valve of the water cooling adjusting device is opened. Therefore, the water quantity adjusting device can be prevented from being in a power-on state all the time and consuming electric energy. In addition, based on that the opening instruction of the water using switch is not received within the first preset time interval, the water is not boiled for the second time within a short time when the water is boiled again next time, and the water inlet pipe does not need to be throttled, so the water quantity adjusting device is controlled to be powered off.
In the embodiment of the invention, a water quantity adjusting part is arranged on a water inlet pipe, a water quantity adjusting device is arranged on the water quantity adjusting part to adjust the water flow of a flow passage so as to realize the control of the water inflow of the water inlet pipe, when an opening instruction of a water using switch is received, whether the boiled water is secondary boiled water in a short time or not is determined according to the time interval between the current time point and the closing time of the previous closing of the water using switch, if yes, the water inflow of the water inlet pipe is reduced until the ignition is finished based on the control of the water quantity adjusting part, and the opening degree of the water quantity adjusting device is increased after a flame signal is sensed. So, before the completion of lighting a fire, the inflow based on the inflow is little, and the cold water that gets into heating portion then is few, can avoid reducing the temperature of previous heating this moment, and it is undulant to reduce the temperature, improves the result of use of water heater.
Specifically, in this embodiment, by providing the first flow channel and the second flow channel, the water amount adjusting device is disposed on at least one of the first flow channel and the second flow channel, and the switching control between the large water and the small water is performed on the water inlet pipe by combining the first flow channel and the second flow channel.
It can be understood that the water heater in the embodiment can control the ignition needle to discharge and open the gas valve to ignite based on the detection of the water flow signal and the stabilization of the wind pressure. The ignition time can also be shortened based on the following second embodiment, and the water 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 in combination with the above embodiments.
Referring to fig. 6, a second embodiment of the control method of a water heater according to the present invention is based on the first embodiment, and the step of controlling the ignition needle of the water heater to discharge and open the gas valve of the water heater when the time interval is smaller 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 step S22, when the rotating speed of the fan is greater than or equal to the preset rotating speed, controlling the ignition needle of the water heater to discharge and opening the gas valve of the water heater.
In this embodiment, be equipped with the sensor that is used for detecting the fan rotational speed of water heater on the water heater, like hall sensor, can detect rotational speed and rotational speed change etc. in the fan operation based on the sensor. Based on preset time interval is less than or equal to during first preset time interval, then judge this boiling water is the secondary boiling water in the short time, this moment through the rotational speed of the fan that acquires the water heater, and based on fan rotational speed is greater than or equal to during the preset rotational speed, control promptly the ignition needle of water heater discharges and opens the gas valve of water heater, for the technical scheme that the ignition needle discharges when exemplary technique needs the wind pressure steady, this embodiment controls the ignition needle in advance and discharges, has shortened the used ignition time of whole ignition process, so, can reduce the inflow of ignition in-process inlet tube, further reduce the influence of the temperature of cold water in the ignition process to outlet pipe or heating portion.
It should be noted that the preset rotation speed is a critical rotation speed which is measured and calculated according to an experiment and can enable ignition to be successful, and when the rotation speed of the fan reaches the critical rotation speed, the ignition needle discharges electricity to enable ignition to be successful. Wherein, the fan reaches when presetting the rotational speed, the wind pressure of ignition needle position department still does not reach stably, consequently, this embodiment control ignition needle discharges in advance to reduce the used ignition time of process of igniteing.
Further, in order to avoid gas leakage and influence on indoor safety, after the steps of controlling the ignition needle of the water heater to discharge and opening the gas valve of the water heater, the method further comprises the following steps:
and when the induction needle cannot detect the flame signal, closing the gas valve.
The water heater is at the ignition in-process, probably based on influences such as water pressure, wind pressure, coal gas, can not ignite after opening the gas valve, and at this moment, if keep the gas valve to be in the open mode always, then the gas then can flow indoor, can influence user's life safety when the gas concentration in the indoor is too high, consequently in certain time interval induction needle response when not reaching flame signal, then explain this ignition is unsuccessful, closes this moment the gas valve avoids the gas to leak.
Referring to fig. 7, the present invention further provides a third embodiment of a control method of a water heater, and in this embodiment, the ignition time of the water heater is controlled to avoid the influence of the water inflow of cold water on the water temperature in the pipe during the second boiling. Specifically, the control method of the water heater comprises the following steps:
step S110, when receiving an opening instruction of the water switch, acquiring a time interval between a current time point and a closing time point of the water switch when being closed last time;
step S120, 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 S130, controlling an ignition needle of the water heater to discharge and opening a gas valve of the water heater when the rotating speed of the fan is greater than or equal to a preset rotating speed.
The water use switch is a switch used for boiling water or turning off water on the water heater, and when a user turns on the water use switch, an opening instruction of the water use switch is received. The method comprises the steps of obtaining a current time point and a closing time point when a water switch is closed for the previous time, determining a time interval between the current time point and the closing time point when the water switch is closed for the previous time, judging whether the time interval is smaller than or equal to a first preset time interval, and if so, judging that the boiled water is boiled for the second time (the boiled water is boiled again within a short time after the water switch is closed).
This embodiment is in order to reduce the fluctuation of hot water temperature in the water heater, when this boiling water is the secondary boiling water, through acquireing the fan rotational speed of water heater, and based on fan rotational speed is greater than or equal to during the predetermined rotational speed, control promptly the ignition needle of water heater discharges and opens the gas valve of water heater, for the technical scheme that the ignition needle discharges when exemplary technique needs the wind pressure steady, the present embodiment controls the ignition needle in advance and discharges, has shortened the used ignition time of whole ignition process, so, can reduce the inflow of ignition in-process inlet tube, and then reduce the influence of the temperature of cold water in to outlet pipe or heating portion among the ignition process.
Further, in the ignition needle discharge process, the wind pressure that the fan rotated and made the ignition needle position tends to stably gradually, and the gas valve was opened this moment, ignites easily, and if the wind pressure was unstable, then blow the air current to the gas valve easily, produced abnormal fire easily, arouse the incident. Therefore, in this embodiment, the step of controlling the ignition needle of the water heater to discharge and open the gas valve of the water heater includes:
controlling an ignition needle of the water heater to discharge, and detecting the variation of the current air pressure of the water heater and the air pressure before a second preset time interval;
and when the variable quantity is smaller than or equal to a preset threshold value, opening a gas valve of the water heater.
Also being in control the ignition needle of water heater discharges the in-process, detects the difference of the current wind pressure in hot period and the wind pressure between the second preset time interval, the difference is promptly the change amount when the change amount is less, also promptly when the change amount is less than preset threshold value, then the wind pressure of judgement ignition needle position department is stable, opens this moment during the gas valve, the air current can not flow backwards, and it is safe to ignite.
It can be understood that, in this embodiment, begin control ignition needle discharge when the wind pressure is unstable promptly, the ignition needle discharge in-process, the wind pressure also can constantly tend to stably, under the normal condition, when discharging, the wind pressure also reaches stably, opens the gas valve this moment, can guarantee safe ignition, controls the ignition needle in advance and discharges, can shorten the ignition time of whole ignition process again to reduce the cold water yield, reduce the 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;
when the water inflow is greater than or equal to a preset water amount, executing the step of acquiring the rotating speed of the fan of the water heater;
when the inflow is less than the preset water amount, the current wind pressure of the water heater and the wind pressure before the second preset time interval are detected, and when the variable quantity is less than or equal to a preset threshold value, the ignition needle of the water heater is controlled to discharge and the gas valve of the water heater is opened.
In this embodiment, after determining that the boiled water is the 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 a difference in water pressure, or may be different based on a difference in adjustment of the water inflow of the water inlet pipe by the water amount adjustment portion on the water inlet pipe. Therefore, in the process of secondary water boiling, in order to reduce the temperature fluctuation of hot water in the water heater and ensure the ignition safety, the embodiment determines which type of ignition is adopted according to the water inflow of the water inlet pipe.
It should be noted that the water heater of this embodiment has at least two ignition modes, for example, as described in the third embodiment, the first ignition mode obtains the rotation speed of the fan of the water heater, and when the rotation speed of the fan is greater than or equal to the preset rotation speed, the ignition needle of the water heater is controlled to discharge electricity and the gas valve of the water heater is opened, so as to shorten the ignition time. As in the second firing pattern: detect the present wind pressure of water heater and the change amount of the wind pressure before the second preset time interval, and when the change amount is less than or equal to and predetermines the threshold value, control the ignition needle of water heater discharges and opens the gas valve of water heater, also promptly after the wind pressure of ignition needle position is stable, again control the ignition needle discharges and opens the gas valve of water heater.
When the water inflow is larger than or equal to the preset water amount, the water inflow speed is high, at the moment, in order to avoid secondary boiling in a short time, the influence of cold water entering from the water inlet pipe on hot water in the water heater is large, and hot water fluctuation is large, at the moment, a first ignition mode is adopted, so that the ignition time is shortened, and the cold water inflow is reduced. And when the water inflow is less than the preset water amount, the water inflow speed is low, and at the moment, in order to meet the requirement of safe ignition, a second ignition mode is adopted, and based on the low water inflow speed and the small water inflow, the hot water temperature fluctuation can be prevented from being small, and safe ignition can be realized.
This embodiment is ignited through judging the inflow size and selecting suitable ignition mode, can make the temperature fluctuation of secondary boiling water little in the short time, can make water heater service environment safety again.
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, the hot water control program implementing the various embodiments of the control method of the water heater as described above when executed by the processor.
Furthermore, the present invention also provides a computer-readable storage medium storing a hot water control program which, when executed by a processor, implements the various embodiments of the control method of the water heater as described above.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits 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 an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. The control method of the water heater is characterized in that 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 of the water heater comprises the following steps:
when an opening instruction of a water using switch is received, acquiring a time interval between a current time point and a closing time point of the previous closing of the water using switch;
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 induction needle senses a flame signal, the opening degree of the water quantity adjusting device is increased to increase the water inflow of the water inlet pipe, wherein the water inflow of the water inlet pipe is larger than zero before the induction needle senses the flame signal.
2. The method as claimed in claim 1, wherein the water quantity adjusting part comprises a first flow path and a second flow path, the water quantity adjusting device is disposed on the first flow path or the second flow path, and after the step of increasing the opening degree of the water quantity adjusting device to increase the water inlet quantity of the water inlet pipe, the method further comprises:
when a closing instruction of the water consumption switch is received, a valve of the water quantity adjusting device is closed;
and closing the gas valve.
3. The method for controlling a water heater according to claim 2, wherein when the water amount adjusting device is a normally open valve, the method further comprises, after the step of closing the valve of the water amount adjusting device:
and when the opening instruction of the water consumption switch is not received after the first preset time interval, opening the valve of the water quantity adjusting device.
4. The control method of the water heater as claimed in claim 1, wherein the step of controlling the ignition needle of the water heater to discharge and open the gas valve of the water heater when the time interval is less than or equal to a first preset time interval comprises:
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 when the rotating speed of the fan is greater than or equal to the preset rotating speed, controlling an ignition needle of the water heater to discharge and opening a gas valve of the water heater.
5. The method for controlling a water heater as claimed in claim 1 or 4, wherein the step of controlling the discharge of the ignition needle of the water heater and the opening of the gas valve of the water heater is followed by further comprising:
and when the flame signal cannot be detected by the sensing needle, closing the gas valve.
6. A control method of a water heater is characterized by comprising the following steps:
when an opening instruction of a water using switch is received, acquiring a time interval between a current time point and a closing time point when the water using switch is closed last time;
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 when the rotating speed of the fan is greater than or equal to the preset rotating speed, controlling an ignition needle of the water heater to discharge and opening a gas valve of the water heater.
7. The method of controlling a water heater as claimed in claim 6, wherein the step of controlling the discharge of the ignition needle of the water heater and the opening of the gas valve of the water heater comprises:
controlling an ignition needle of the water heater to discharge, and detecting the variation of the current air pressure of the water heater and the air pressure before a second preset time interval;
and when the variable quantity is smaller than or equal to a preset threshold value, opening a gas valve of the water heater.
8. The control method of a water heater as claimed in claim 6, further comprising:
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;
when the water inflow is greater than or equal to a preset water amount, executing the step of acquiring the rotating speed of the fan of the water heater;
when the inflow is less than the preset water amount, the current wind pressure of the water heater and the wind pressure before the second preset time interval are detected, and when the variable quantity is less than or equal to a preset threshold value, the ignition needle of the water heater is controlled to discharge and the gas valve of the water heater is opened.
9. A water heater, characterized in that the water heater comprises a memory, a processor and a hot water control program stored in the memory and capable of running on the processor, 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 the hot water control program is executed by the processor to realize the steps of the control method of the water heater according to any one of claims 1 to 8.
10. A computer-readable storage medium, characterized in that the computer-readable storage medium stores a hot water control program, which when executed by a processor, implements the steps of the control method of the water heater according to any one of claims 1 to 8.
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| CN114963544B (en) | 2024-04-30 |
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