CN106871457B - Water heater and control method thereof - Google Patents
Water heater and control method thereof Download PDFInfo
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- CN106871457B CN106871457B CN201710139494.5A CN201710139494A CN106871457B CN 106871457 B CN106871457 B CN 106871457B CN 201710139494 A CN201710139494 A CN 201710139494A CN 106871457 B CN106871457 B CN 106871457B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/20—Arrangement or mounting of control or safety devices
- F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
- F24H9/2035—Arrangement or mounting of control or safety devices for water heaters using fluid fuel
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Abstract
The invention discloses a water heater and a control method thereof, wherein the control method of the water heater comprises the following steps: recording the triggering times of opening and closing a shower head water valve of the water heater within a preset time length; comparing the triggering times with preset times; when the triggering times are more than or equal to the preset times, the water temperature in the hot water pipe of the water heater is heated to the preset water temperature before the water valve of the shower head is opened next time. According to the technical scheme, the zero-cold-water mode is triggered by the water end, so that a user can trigger the zero-cold-water mode very conveniently.
Description
Technical Field
The invention relates to the technical field of water heaters, in particular to a water heater and a control method thereof.
Background
Along with the improvement of living standard of people, people have higher and higher requirements on water heaters. When the gas water heater is just used, cold water can be discharged for a period of time, so that the use of a user is not facilitated. In order to meet the demand of people, before a user uses water, the water in a hot water pipe of a water heater is heated, so that the user can use the hot water immediately. However, when the water in the hot water pipe is heated, the phenomenon that no one is used after the water is heated is avoided while the situation that a user can use the hot water according to needs is ensured.
Disclosure of Invention
The invention mainly aims to provide a water heater, which aims to ensure that a user can use hot water at any time and improve the utilization rate of the hot water.
In order to achieve the purpose, the control method of the water heater provided by the invention comprises the following steps:
recording the triggering times of opening and closing a shower head water valve of the water heater within a preset time length;
comparing the triggering times with preset times;
when the triggering times are more than or equal to the preset times, the water temperature in the hot water pipe of the water heater is heated to the preset water temperature before the water valve of the shower head is opened next time.
Preferably, the step of heating the water temperature in the hot water pipe of the water heater to a preset water temperature before the next sprinkler water valve opening comprises:
detecting the temperature of cold water in a cold water pipe;
calculating target heating power of a heating device of the water heater according to the cold water temperature and a preset water temperature;
closing a water inlet valve of the water heater to enable a cold water pipe, a hot water pipe, a heating pipe and a driving pipe of the water heater to form a closed circulation pipeline;
and starting a water pump arranged on the driving pipe, sending cold water in the cold water pipe to the heating pipe after passing through the driving pipe, heating water in the heating pipe by the heating device with target heating power, and enabling hot water heated to a preset water temperature to flow into the hot water pipe.
Preferably, before the detecting the temperature of the cold water in the cold water pipe, the method further comprises the following steps:
acquiring the capacity of a hot water pipe and the preset power of a water pump;
calculating the filling time required by filling the hot water pipe with hot water according to the capacity of the hot water pipe and the preset power of the water pump;
and calculating the time for sending the water use prompt according to the filling time and the starting time of the water pump.
Preferably, after the step of turning on the water pump disposed on the driving pipe, sending the cold water in the cold water pipe to the heating pipe after passing through the driving pipe, heating the water in the heating pipe by the heating device with the target heating power, and flowing the hot water heated to the preset water temperature into the hot water pipe, the method further comprises:
acquiring the terminal water temperature of a hot water inlet of a sprinkler of a water heater;
and when the terminal water temperature is greater than or equal to the preset water temperature, the water pump and the heating assembly are turned off.
Preferably, when the triggering times are greater than or equal to the preset times, the step of heating the water temperature in the hot water pipe of the water heater to the preset water temperature before the shower water valve is opened next time comprises the following steps:
when the triggering times are more than or equal to the preset times, acquiring the total water consumption within the preset time;
when the total water consumption is less than or equal to the preset water consumption, the water temperature in the hot water pipe of the water heater is heated to the preset water temperature before the water valve of the shower head is opened next time.
The invention further proposes a water heater comprising:
the recording module is used for recording the triggering times of opening and closing a shower head water valve of the water heater within a preset time length;
the comparison module is used for comparing the triggering times with preset times;
and the heating module is used for heating the water temperature in the hot water pipe of the water heater to the preset water temperature before the next sprinkler water valve is opened when the triggering times are more than or equal to the preset times.
Preferably, the heating module comprises:
the detection unit is used for detecting the temperature of cold water in the cold water pipe;
the first calculating unit is used for calculating the target heating power of a heating device of the water heater according to the cold water temperature and the preset water temperature;
the closing unit is used for closing a water inlet valve of the water heater so that a cold water pipe, a hot water pipe, a heating pipe and a driving pipe of the water heater form a closed circulation pipeline;
and the heating unit is used for starting a water pump arranged on the driving pipe, sending cold water in the cold water pipe to the heating pipe after passing through the driving pipe, heating water in the heating pipe by the heating device with target heating power, and enabling hot water heated to a preset water temperature to flow into the hot water pipe.
Preferably, the heating module further comprises:
the first acquisition unit is used for acquiring the capacity of the hot water pipe and the preset power of the water pump;
the second calculating unit is used for calculating the filling time required by the hot water to fill the hot water pipe according to the capacity of the hot water pipe and the preset power of the water pump;
and the third calculating unit is used for calculating the time for sending the water using prompt according to the filling time and the starting time of the water pump.
Preferably, the heating module further comprises:
the second acquisition unit is used for acquiring the terminal water temperature of a hot water inlet of the water heater sprinkler;
and the stopping unit is used for turning off the water pump and the heating assembly when the terminal water temperature is greater than or equal to the preset water temperature.
Preferably, the heating module comprises:
the third acquisition unit is used for acquiring the total water consumption within the preset time when the triggering times are more than or equal to the preset times;
and the heating subunit is used for heating the water temperature in the hot water pipe of the water heater to the preset water temperature before the water valve of the shower head is opened next time when the total water consumption is less than or equal to the preset water consumption.
According to the technical scheme, the triggering times of opening and closing a shower head water valve of a water heater within a preset time length are recorded; then comparing the triggering times with preset times; then, when the triggering times are more than or equal to the preset times, heating the water temperature in the hot water pipe of the water heater to the preset water temperature before the water valve of the shower head is opened next time so that a user can directly use the hot water; the zero-cold-water mode is triggered by the using end, so that the condition that when a user is in a bathroom and is inconvenient to go out to trigger the zero-cold-water mode is suitable, the zero-cold-water mode can be triggered directly by the using end (a shower head end), and the user can trigger the zero-cold-water mode very conveniently; meanwhile, the mode of triggering zero-cold water through the operation of the use end belongs to single effectiveness, so that the water in the hot water pipe is prevented from being heated for a long time while the water demand of a user is met conveniently and quickly, the waste of hot water is avoided, and the utilization rate of the hot water is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a water heater according to an embodiment of the present invention;
FIG. 2 is a schematic flow chart illustrating a control method of a water heater according to an embodiment of the present invention;
FIG. 3 is a schematic flow chart illustrating another embodiment of a method for controlling a water heater according to the present invention;
FIG. 4 is a schematic block diagram of a water heater according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a module of a water heater according to another embodiment of the present invention.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 100 | |
200 | |
| 210 | |
300 | |
| 310 | One- |
400 | |
| 410 | |
500 | |
| 600 | |
700 | |
| 710 | |
720 | |
| 730 | Shower head water valve |
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
Referring to fig. 1 to 3, in an embodiment of the present invention,
a control method of a water heater, comprising the steps of:
s10, recording the triggering times of opening and closing a shower head water valve of the water heater within a preset time length;
the water heater is internally provided with a counting module for recording the opening and closing of the shower water valve, when a user opens and closes the shower water valve 730, the counting module records once, and if the water heater is opened and closed for three times within a preset duration, the counting module records three times, and the triggering frequency is three. The preset duration can be set according to the requirement of the user, and 5 seconds is taken as an example.
S20, comparing the triggering times with preset times; subtracting the preset times from the triggering times, and when the difference value is greater than or equal to zero, indicating that the triggering times are greater than or equal to the preset times; when the difference is less than zero, the triggering times are less than the preset times.
And S30, when the triggering times are larger than or equal to the preset times, heating the water temperature in the hot water pipe of the water heater to the preset water temperature before the shower water valve is opened next time. The predetermined number of times is 2 times as an example.
The shower water valve 730 is the user end of the water heater pipe system, i.e., the user end of the water heater pipe system. The zero cold water mode is triggered by the operation of the using end (hot water can be directly used in the using process of the gas water heater, and hot water is not needed after cold water in a hot water pipe is drained). In this embodiment, the number of times that the shower water valve 730 is opened and closed within a preset time is taken as an example to illustrate, when the number of times of triggering is greater than or equal to 2, the water temperature in the hot water pipe of the water heater is heated to the preset water temperature before the shower water valve 730 is opened next time. That is, when the user rapidly opens and closes the shower water valve 730 and the number of times within 5 seconds is greater than or equal to 2, it indicates that the user needs to start the zero-cooling water mode, and at this time, the cooling water in the hot water pipe should be heated to the preset water temperature. The zero cold water mode is triggered by operation of the use end, and is limited to be triggered again when the zero cold water mode is effective and used next time. So set up for the water heater does not heat unnecessary hot water, with the work efficiency who improves the water heater.
Before the user uses water, the water in the hot water pipe 600 needs to be heated to a preset water temperature, so that the user can use the hot water at any time when the user needs to use the hot water. There are many ways to heat the water in the hot water pipe 600, and an electric auxiliary heating device can be added in the hot water pipe 600 or in the water circulation loop to directly heat the water in the hot water pipe 600; or a preheating circulation water path inside the water heater may be established first, and water in the hot water pipe 600 is heated to a preset water temperature by heating water flowing in the preheating circulation water path.
In the embodiment, the triggering times of opening and closing the shower head water valve of the water heater within a preset time length are recorded; then comparing the triggering times with preset times; then, when the triggering times are more than or equal to the preset times, heating the water temperature in the hot water pipe of the water heater to the preset water temperature before the water valve of the shower head is opened next time so that a user can directly use the hot water; the zero-cold-water mode is triggered by the using end, so that the condition that when a user is in a bathroom and is inconvenient to go out to trigger the zero-cold-water mode is suitable, the zero-cold-water mode can be triggered directly by the using end (a shower head end), and the user can trigger the zero-cold-water mode very conveniently; meanwhile, the mode of triggering zero-cold water through the operation of the use end belongs to single effectiveness, so that the water in the hot water pipe 600 is prevented from being heated for a long time while the water demand of a user is met conveniently and quickly, the waste of hot water is avoided, and the utilization rate of the hot water is improved.
For a clearer description of the control method of the water heater, the following description is given of the pipelines of the water heater:
the pipeline of the water heater comprises a cold water pipe 100, a hot water pipe 600, a heating pipe 500 and a shunt pipe 300 which are connected in sequence, wherein one end of the shunt pipe 300, which is far away from the heating pipe 500, is communicated with the cold water pipe 100. The water heater pipeline further comprises a driving pipe 400 connected with the shunt pipe 300 in parallel, namely one end of the driving pipe 400 and one end of the air flow pipe are both communicated with the heating pipe 500, and the other end of the driving pipe 400 and the other end of the air flow pipe are both communicated with the cold water pipe 100. The inlet pipe of the water heater is communicated with the cold water pipe 100 and the shunt pipe 300, namely, cold water in the inlet pipe can simultaneously enter the shunt pipe 300 and the cold water pipe 100. An inlet valve 210, such as an electromagnetic control valve, is disposed on the inlet pipe. A check valve is provided at the bypass pipe 300 to prevent water in the hot water pipe 600 from flowing backward into the cold water pipe 100. The driving pipe 400 is provided with a water pump 410 and a check valve, the water pump 410 is used for driving cold water in the cold water pipe 100 to the heating pipe 500 for heating, and the check valve is used for preventing water from flowing from the heating pipe 500 to the cold water pipe 100. The heating element of the water heater is arranged corresponding to the heating pipe 500, and the heating pipe 500, the heating element and the water pump 410 are all arranged in the shell of the water heater. The shower head 700 is disposed at a junction of the hot water pipe 600 and the cold water pipe 100, and a check valve is disposed between a cold water inlet and a hot water inlet of the shower head 700 to prevent water in the cold water pipe 100 from entering the hot water pipe 600.
Under normal operation, a part of cold water in the water inlet pipe 200 of the water heater directly enters the cold water pipe 100, the cold water flows to the cold water inlet 720 of the shower head 700, a part of cold water enters the heating pipe 500 through the shunt pipe 300 for heating, and the heated hot water flows to the hot water inlet 710 of the shower head 700 through the hot water pipe 600.
In the preheating working period, before the user uses water, the water inlet valve 210 on the water inlet pipe is closed, so that the cold water pipe 100, the hot water pipe 600, the heating pipe 500 and the driving pipe 400 form a closed circulation water path. The heating device of the water heater is turned on, the water pump 410 is turned on, the cold water in the cold water pipe 100 flows to the heating pipe 500 under the action of the water pump 410, the heating device heats the cold water passing through the heating pipe 500, the heated hot water flows into the hot water pipe 600, and the cold water in the hot water pipe 600 flows into the cold water pipe 100 under the action of the water pump 410. When the hot water pipe 600 is filled with hot water, the water pump 410 and the heating device are turned off, and at this time (before the user uses water), the hot water inlet 710 of the shower head 700 is filled with hot water, and the cold water inlet 720 is still filled with cold water.
For more rapid heating of the water in the hot water pipe 600, the step of heating the water temperature in the hot water pipe of the water heater to a preset water temperature before the next time the shower water valve 730 is opened includes:
s31, detecting the temperature of cold water in the cold water pipe 100;
the temperature of the cold water in the cold water pipe 100 is detected in many ways, and the detection by a temperature sensor is taken as an example.
S32, calculating the target heating power of the heating device of the water heater according to the cold water temperature and the preset water temperature;
in order to heat cold water to hot water having a preset water temperature, the cold water needs to be heated, and the heating power is in positive correlation with the temperature difference between the preset water temperature and the cold water temperature, that is, the larger the temperature difference is, the larger the target heating power needs to be set. Of course, the specific heat capacity of water also needs to be considered in the calculation and setting process. The gears of the water heater heating device can be divided into a high gear, a medium gear and a low gear, each gear corresponds to different temperature difference working conditions, and the larger the temperature difference is, the higher the corresponding gear is.
S33, closing the water inlet valve 210 of the water heater, so that the cold water pipe 100, the hot water pipe 600, the heating pipe 500 and the driving pipe 400 of the water heater form a closed circulation pipeline;
the control valves of the water inlet valve 210 and the shunt pipe 300 of the water heater are closed, so that the cold water pipe 100, the hot water pipe 600, the heating pipe 500 and the driving pipe 400 form a closed circulation pipeline, and necessary conditions are provided for water circulation heating.
S34, the water pump 410 disposed on the driving pipe 400 is turned on, the cold water in the cold water pipe 100 is sent to the heating pipe 500 through the driving pipe 400, the heating device heats the water in the heating pipe 500 with the target heating power, and the hot water heated to the preset water temperature flows into the hot water pipe 600.
In this embodiment, through detecting cold water temperature to set up heating device's heating power according to cold water temperature, target temperature, in order to guarantee that the user can use required hot water, thereby satisfy user's demand.
In order to make the user use the hot water more timely, the method further comprises the following steps before the step of detecting the temperature of the cold water in the cold water pipe 100:
s35, acquiring the capacity of the hot water pipe 600 and the preset power of the water pump 410; there are various ways to obtain the volume of the hot water pipe 600, and before the hot water pipe 600 is assembled, the volume of the hot water pipe 600 is detected, or it can be calculated according to the length and diameter of the pipe, or obtained from the storage device of the water heater. The power of the water pump 410 may be set by a user or may be a default setting.
S36, calculating a filling time required for hot water to fill the hot water pipe 600 according to the capacity of the hot water pipe 600 and the preset power of the water pump 410; the time period for filling the hot water pipe 600 is a ratio of the capacity of the hot water pipe 600 to the power of the water pump 410, i.e., the time period for filling the hot water pipe 600 is inversely proportional to the capacity and directly proportional to the power of the water pump 410.
And S37, calculating the time for sending the water use prompt according to the filling time length and the opening time of the water pump 410.
Taking the water pump 410 as an example of being turned on for 19:55 and the filling time as an example of being 2 minutes, the time for turning off the water pump 410 and the heating device is 19:57, that is, the time for giving a prompt to the user is also 19: 57. There are many ways to send the prompt to the user, such as by light, vibration, sound, and combinations thereof, and of course, in some embodiments, the user may also be prompted by sending a short message to a designated terminal.
For example, to further save energy and avoid heating redundant hot water, after the step of turning on the water pump 410 disposed on the driving pipe 400, sending the cold water in the cold water pipe 100 to the heating pipe 500 through the driving pipe 400, the heating device heating the water in the heating pipe 500 with the target heating power, and the hot water heated to the preset water temperature flowing into the hot water pipe 600, the method further includes:
acquiring the terminal water temperature of a hot water inlet 710 of a water heater sprinkler 700;
in this embodiment, a temperature sensor is disposed at a hot water inlet 710 of the shower head 700 to detect a temperature of hot water entering the shower head 700.
And turning off the water pump 410 and the heating assembly when the terminal water temperature is greater than or equal to a preset water temperature.
When the temperature of the water at the hot water inlet 710 is greater than or equal to the preset temperature, it is indicated that the whole hot water pipe 600 is filled with hot water (since the shower head 700 is disposed at the junction of the cold water pipe 100 and the hot water pipe 600, the hot water inlet 710 of the shower head 700 is the extreme end of the hot water pipe 600, and when the extreme water temperature meets the requirement of the preset temperature, the temperature of the water in the whole hot water pipe 600 should meet the preset temperature). At this time, the water pump 410 and the heating device may be turned off, of course. So set up to make heating device and water pump 410's operating time more accurate, avoid heating device and water pump 410 to work overlength's time to make the energy obtain more reasonable utilization.
For more accurate triggering of the zero-cold-water mode, when the triggering times are greater than or equal to the preset times, the step of heating the water temperature in the hot water pipe of the water heater to the preset water temperature before the next sprinkler water valve is opened comprises the following steps:
when the triggering times are more than or equal to the preset times, acquiring the total water consumption within the preset time;
when the triggering times are more than or equal to the preset times, the zero cold water mode is not directly started, but the water consumption for starting and closing the shower water valve for multiple times is judged. Of course, it is understood that when the number of triggers is less than the preset number, the zero cold water mode is not triggered, ignoring the operations herein. In the waterway system of the water heater, a flow sensor is arranged, and the position of the flow sensor is arranged at a water using end as an example. The flow sensor detects the water flow rate of the shower water valve 730 during the current opening and closing process, and sums the water flow rates measured each time, i.e., the total water consumption.
When the total water consumption is less than or equal to the preset water consumption, the water temperature in the hot water pipe of the water heater is heated to the preset water temperature before the water valve of the shower head is opened next time.
When the total water consumption is larger than the preset water consumption, the operation is neglected, and the zero cold water mode is not triggered. When the total water consumption is less than or equal to the preset water consumption, the zero-cold-water mode is triggered, and the water temperature in the hot water pipe of the water heater is heated to the preset water temperature before the shower water valve 730 is opened next time. Namely, the cold water in the hot water pipe in the water heater is heated under the condition that the water heater is not used. The condition for triggering the zero-cold-water mode is defined by the water using times and the total water using amount at the same time, so that the zero-cold-water mode is triggered more accurately, and false triggering is prevented.
With reference to fig. 1, 4 and 5, the invention further proposes a water heater comprising:
the recording module 10 is used for recording the triggering times of opening and closing a shower head water valve of the water heater within a preset time length;
the water heater is internally provided with a counting module for recording the opening and closing of the shower water valve, when a user opens and closes the shower water valve 730, the counting module records once, and if the water heater is opened and closed for three times within a preset duration, the counting module records three times, and the triggering frequency is three. The preset duration can be set according to the requirement of the user, and 5 seconds is taken as an example.
A comparison module 20, configured to compare the trigger times with preset times; subtracting the preset times from the triggering times, and when the difference value is greater than or equal to zero, indicating that the triggering times are greater than or equal to the preset times; when the difference is less than zero, the triggering times are less than the preset times.
And the heating module 30 is used for heating the water temperature in the hot water pipe of the water heater to a preset water temperature before the water valve of the shower head is opened next time when the triggering times are greater than or equal to the preset times. The predetermined number of times is 2 times as an example.
The shower water valve 730 is the user end of the water heater pipe system, i.e., the user end of the water heater pipe system. The zero cold water mode is triggered by the operation of the using end (hot water can be directly used in the using process of the gas water heater, and hot water is not needed after cold water in a hot water pipe is drained). In this embodiment, the number of times that the shower water valve 730 is opened and closed within a preset time is taken as an example to illustrate, when the number of times of triggering is greater than or equal to 2, the water temperature in the hot water pipe of the water heater is heated to the preset water temperature before the shower water valve 730 is opened next time. That is, when the user rapidly opens and closes the shower water valve 730 and the number of times within 5 seconds is greater than or equal to 2, it indicates that the user needs to start the zero-cooling water mode, and at this time, the cooling water in the hot water pipe should be heated to the preset water temperature. The zero cold water mode is triggered by operation of the use end, and is limited to be triggered again when the zero cold water mode is effective and used next time. So set up for the water heater does not heat unnecessary hot water, with the work efficiency who improves the water heater.
Before the user uses water, the water in the hot water pipe 600 needs to be heated to a preset water temperature, so that the user can use the hot water at any time when the user needs to use the hot water. There are many ways to heat the water in the hot water pipe 600, and an electric auxiliary heating device can be added in the hot water pipe 600 or in the water circulation loop to directly heat the water in the hot water pipe 600; or a preheating circulation water path inside the water heater may be established first, and water in the hot water pipe 600 is heated to a preset water temperature by heating water flowing in the preheating circulation water path.
In the embodiment, the triggering times of opening and closing the shower head water valve of the water heater within a preset time length are recorded; then comparing the triggering times with preset times; then, when the triggering times are more than or equal to the preset times, heating the water temperature in the hot water pipe of the water heater to the preset water temperature before the water valve of the shower head is opened next time so that a user can directly use the hot water; the zero-cold-water mode is triggered by the using end, so that the condition that when a user is in a bathroom and is inconvenient to go out to trigger the zero-cold-water mode is suitable, the zero-cold-water mode can be triggered directly by the using end (a shower head end), and the user can trigger the zero-cold-water mode very conveniently; meanwhile, the mode of triggering zero-cold water through the operation of the use end belongs to single effectiveness, so that the water in the hot water pipe 600 is prevented from being heated for a long time while the water demand of a user is met conveniently and quickly, the waste of hot water is avoided, and the utilization rate of the hot water is improved.
For a clearer description of the control method of the water heater, the following description is given of the pipelines of the water heater:
the pipeline of the water heater comprises a cold water pipe 100, a hot water pipe 600, a heating pipe 500 and a shunt pipe 300 which are connected in sequence, wherein one end of the shunt pipe 300, which is far away from the heating pipe 500, is communicated with the cold water pipe 100. The water heater pipeline further comprises a driving pipe 400 connected with the shunt pipe 300 in parallel, namely one end of the driving pipe 400 and one end of the air flow pipe are both communicated with the heating pipe 500, and the other end of the driving pipe 400 and the other end of the air flow pipe are both communicated with the cold water pipe 100. The inlet pipe of the water heater is communicated with the cold water pipe 100 and the shunt pipe 300, namely, cold water in the inlet pipe can simultaneously enter the shunt pipe 300 and the cold water pipe 100. An inlet valve 210, such as an electromagnetic control valve, is disposed on the inlet pipe. A check valve is provided at the bypass pipe 300 to prevent water in the hot water pipe 600 from flowing backward into the cold water pipe 100. The driving pipe 400 is provided with a water pump 410 and a check valve, the water pump 410 is used for driving cold water in the cold water pipe 100 to the heating pipe 500 for heating, and the check valve is used for preventing water from flowing from the heating pipe 500 to the cold water pipe 100. The heating element of the water heater is arranged corresponding to the heating pipe 500, and the heating pipe 500, the heating element and the water pump 410 are all arranged in the shell of the water heater. The shower head 700 is disposed at a junction of the hot water pipe 600 and the cold water pipe 100, and a check valve is disposed between a cold water inlet and a hot water inlet of the shower head 700 to prevent water in the cold water pipe 100 from entering the hot water pipe 600.
Under normal operation, a part of cold water in the water inlet pipe 200 of the water heater directly enters the cold water pipe 100, the cold water flows to the cold water inlet 720 of the shower head 700, a part of cold water enters the heating pipe 500 through the shunt pipe 300 for heating, and the heated hot water flows to the hot water inlet 710 of the shower head 700 through the hot water pipe 600.
In the preheating working period, before the user uses water, the water inlet valve 210 on the water inlet pipe is closed, so that the cold water pipe 100, the hot water pipe 600, the heating pipe 500 and the driving pipe 400 form a closed circulation water path. The heating device of the water heater is turned on, the water pump 410 is turned on, the cold water in the cold water pipe 100 flows to the heating pipe 500 under the action of the water pump 410, the heating device heats the cold water passing through the heating pipe 500, the heated hot water flows into the hot water pipe 600, and the cold water in the hot water pipe 600 flows into the cold water pipe 100 under the action of the water pump 410. When the hot water pipe 600 is filled with hot water, the water pump 410 and the heating device are turned off, and at this time (before the user uses water), the hot water inlet 710 of the shower head 700 is filled with hot water, and the cold water inlet 720 is still filled with cold water.
In order to heat the water in the hot water pipe 600 more rapidly, the heating module 20 includes:
a detection unit 31 for detecting a temperature of cold water in the cold water pipe 100;
the temperature of the cold water in the cold water pipe 100 is detected in many ways, and the detection by a temperature sensor is taken as an example.
A first calculating unit 32 for calculating a target heating power of a heating device of the water heater according to the cold water temperature and a preset water temperature;
in order to heat cold water to hot water having a preset water temperature, the cold water needs to be heated, and the heating power is in positive correlation with the temperature difference between the preset water temperature and the cold water temperature, that is, the larger the temperature difference is, the larger the target heating power needs to be set. Of course, the specific heat capacity of water also needs to be considered in the calculation and setting process. The gears of the water heater heating device can be divided into a high gear, a medium gear and a low gear, each gear corresponds to different temperature difference working conditions, and the larger the temperature difference is, the higher the corresponding gear is.
A closing unit 33 for closing the water inlet valve 210 of the water heater so that the cold water pipe 100, the hot water pipe 600, the heating pipe 500 and the driving pipe 400 of the water heater constitute a closed circulation line;
the control valves of the water inlet valve 210 and the shunt pipe 300 of the water heater are closed, so that the cold water pipe 100, the hot water pipe 600, the heating pipe 500 and the driving pipe 400 form a closed circulation pipeline, and necessary conditions are provided for water circulation heating.
And a heating unit 34 for turning on a water pump 410 disposed on the driving pipe 400, sending cold water in the cold water pipe 100 to the heating pipe 500 through the driving pipe 400, heating water in the heating pipe 500 by the heating device with a target heating power, and flowing hot water heated to a preset water temperature into the hot water pipe 600.
In this embodiment, through detecting cold water temperature to set up heating device's heating power according to cold water temperature, target temperature, in order to guarantee that the user can use required hot water, thereby satisfy user's demand.
In order to make the user use the hot water more timely, the heating module 20 further includes:
a first obtaining unit 35 for obtaining the capacity of the hot water pipe 600 and the preset power of the water pump 410; there are various ways to obtain the volume of the hot water pipe 600, and before the hot water pipe 600 is assembled, the volume of the hot water pipe 600 is detected, or it can be calculated according to the length and diameter of the pipe, or obtained from the storage device of the water heater. The power of the water pump 410 may be set by a user or may be a default setting.
A second calculating unit 36 for calculating a filling time required for hot water to fill the hot water pipe 600 according to the capacity of the hot water pipe 600 and a preset power of the water pump 410; the time period for filling the hot water pipe 600 is a ratio of the capacity of the hot water pipe 600 to the power of the water pump 410, i.e., the time period for filling the hot water pipe 600 is inversely proportional to the capacity and directly proportional to the power of the water pump 410.
And the third calculating unit 37 is used for calculating the time for sending the water use prompt according to the filling time length and the starting time of the water pump 410.
Taking the water pump 410 as an example of being turned on for 19:55 and the filling time as an example of being 2 minutes, the time for turning off the water pump 410 and the heating device is 19:57, that is, the time for giving a prompt to the user is also 19: 57. There are many ways to send the prompt to the user, such as by light, vibration, sound, and combinations thereof, and of course, in some embodiments, the user may also be prompted by sending a short message to a designated terminal.
For example, to further save energy and avoid heating redundant hot water, the heating module further includes:
a second acquiring unit for acquiring a terminal water temperature of a hot water inlet 710 of the water heater shower 700;
in this embodiment, a temperature sensor is disposed at a hot water inlet 710 of the shower head 700 to detect a temperature of hot water entering the shower head 700.
And a stopping unit for turning off the water pump 410 and the heating assembly when the terminal water temperature is greater than or equal to a preset water temperature.
When the temperature of the water at the hot water inlet 710 is greater than or equal to the preset temperature, it is indicated that the whole hot water pipe 600 is filled with hot water (since the shower head 700 is disposed at the junction of the cold water pipe 100 and the hot water pipe 600, the hot water inlet 710 of the shower head 700 is the extreme end of the hot water pipe 600, and when the extreme water temperature meets the requirement of the preset temperature, the temperature of the water in the whole hot water pipe 600 should meet the preset temperature). At this time, the water pump 410 and the heating device may be turned off, of course. So set up to make heating device and water pump 410's operating time more accurate, avoid heating device and water pump 410 to work overlength's time to make the energy obtain more reasonable utilization.
For more accurate triggering of the zero cold water mode, the heating module 30 comprises:
the third acquisition unit is used for acquiring the total water consumption within the preset time when the triggering times are more than or equal to the preset times;
when the triggering times are more than or equal to the preset times, the zero cold water mode is not directly started, but the water consumption for starting and closing the shower water valve for multiple times is judged. Of course, it is understood that when the number of triggers is less than the preset number, the zero cold water mode is not triggered, ignoring the operations herein. In the waterway system of the water heater, a flow sensor is arranged, and the position of the flow sensor is arranged at a water using end as an example. The flow sensor detects the water flow rate of the shower water valve 730 during the current opening and closing process, and sums the water flow rates measured each time, i.e., the total water consumption.
And the heating subunit is used for heating the water temperature in the hot water pipe of the water heater to the preset water temperature before the water valve of the shower head is opened next time when the total water consumption is less than or equal to the preset water consumption.
When the total water consumption is larger than the preset water consumption, the operation is neglected, and the zero cold water mode is not triggered. When the total water consumption is less than or equal to the preset water consumption, the zero-cold-water mode is triggered, and the water temperature in the hot water pipe of the water heater is heated to the preset water temperature before the shower water valve 730 is opened next time. Namely, the cold water in the hot water pipe in the water heater is heated under the condition that the water heater is not used. The condition for triggering the zero-cold-water mode is defined by the water using times and the total water using amount at the same time, so that the zero-cold-water mode is triggered more accurately, and false triggering is prevented.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (6)
1. A control method of a water heater is characterized by comprising the following steps:
recording the triggering times of opening and closing a shower head water valve of the water heater within a preset time length;
comparing the triggering times with preset times;
when the triggering times are more than or equal to the preset times, heating the water temperature in the hot water pipe of the water heater to the preset water temperature before the water valve of the shower head is opened next time;
the step of heating the temperature of water in the water heater hot-water line to predetermineeing the temperature before the gondola water faucet water valve is opened next time includes:
detecting the temperature of cold water in a cold water pipe;
calculating target heating power of a heating device of the water heater according to the cold water temperature and a preset water temperature;
closing a water inlet valve of the water heater to enable a cold water pipe, a hot water pipe, a heating pipe and a driving pipe of the water heater to form a closed circulation pipeline;
starting a water pump arranged on the driving pipe, sending cold water in the cold water pipe to the heating pipe after passing through the driving pipe, heating water in the heating pipe by the heating device with target heating power, and enabling hot water heated to a preset water temperature to flow into the hot water pipe;
the method also comprises the following steps before the step of detecting the temperature of the cold water in the cold water pipe:
acquiring the capacity of a hot water pipe and the preset power of a water pump;
calculating the filling time required by filling the hot water pipe with hot water according to the capacity of the hot water pipe and the preset power of the water pump;
calculating the time for sending out the water using prompt according to the filling time and the starting time of the water pump;
the pipeline of water heater is including cold water pipe, hot-water line, heating pipe and the shunt tubes that connects gradually, and the shunt tubes is kept away from the one end and the cold water pipe intercommunication of heating pipe, and the water heater pipeline still includes the driving tube that sets up with the shunt tubes parallelly connected.
2. The method for controlling a water heater according to claim 1, wherein after the step of turning on a water pump provided on the driving pipe to supply cold water in the cold water pipe to the heating pipe through the driving pipe, the heating device heats water in the heating pipe with a target heating power, and hot water heated to a preset water temperature flows into the hot water pipe, the method further comprises:
acquiring the terminal water temperature of a hot water inlet of a sprinkler of a water heater;
and when the terminal water temperature is greater than or equal to the preset water temperature, the water pump and the heating assembly are turned off.
3. The method as claimed in claim 1 or 2, wherein the step of heating the water temperature in the hot water pipe of the water heater to a preset water temperature before the next sprinkler water valve opening when the number of triggering times is greater than or equal to the preset number comprises:
when the triggering times are more than or equal to the preset times, acquiring the total water consumption within the preset time;
when the total water consumption is less than or equal to the preset water consumption, the water temperature in the hot water pipe of the water heater is heated to the preset water temperature before the water valve of the shower head is opened next time.
4. A water heater, comprising:
the recording module is used for recording the triggering times of opening and closing a shower head water valve of the water heater within a preset time length;
the comparison module is used for comparing the triggering times with preset times;
the heating module is used for heating the water temperature in the hot water pipe of the water heater to a preset water temperature before the water valve of the shower head is opened next time when the triggering times are larger than or equal to the preset times;
the heating module includes:
the detection unit is used for detecting the temperature of cold water in the cold water pipe;
the first calculating unit is used for calculating the target heating power of a heating device of the water heater according to the cold water temperature and the preset water temperature;
the closing unit is used for closing a water inlet valve of the water heater so that a cold water pipe, a hot water pipe, a heating pipe and a driving pipe of the water heater form a closed circulation pipeline;
the heating unit is used for starting a water pump arranged on the driving pipe, sending cold water in the cold water pipe to the heating pipe after passing through the driving pipe, heating water in the heating pipe by the heating device with target heating power, and enabling hot water heated to a preset water temperature to flow into the hot water pipe;
the first acquisition unit is used for acquiring the capacity of the hot water pipe and the preset power of the water pump;
the second calculating unit is used for calculating the filling time required by the hot water to fill the hot water pipe according to the capacity of the hot water pipe and the preset power of the water pump;
the third calculating unit is used for calculating the time for sending the water using prompt according to the filling time and the starting time of the water pump;
the pipeline of water heater is including cold water pipe, hot-water line, heating pipe and the shunt tubes that connects gradually, and the shunt tubes is kept away from the one end and the cold water pipe intercommunication of heating pipe, and the water heater pipeline still includes the driving tube that sets up with the shunt tubes parallelly connected.
5. The water heater as recited in claim 4, wherein said heating module further comprises:
the second acquisition unit is used for acquiring the terminal water temperature of a hot water inlet of the water heater sprinkler;
and the stopping unit is used for turning off the water pump and the heating assembly when the terminal water temperature is greater than or equal to the preset water temperature.
6. The water heater as claimed in claim 4 or 5, wherein the heating module comprises:
the third acquisition unit is used for acquiring the total water consumption within the preset time when the triggering times are more than or equal to the preset times;
and the heating subunit is used for heating the water temperature in the hot water pipe of the water heater to the preset water temperature before the water valve of the shower head is opened next time when the total water consumption is less than or equal to the preset water consumption.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107314551B (en) * | 2017-07-31 | 2023-04-07 | 重庆大学 | Water heater control method and system for realizing remote adjustment through water flow detection |
| CN109386970B (en) * | 2017-08-08 | 2022-01-18 | 青岛经济技术开发区海尔热水器有限公司 | Control method of gas water heater |
| CN108469119A (en) * | 2018-02-24 | 2018-08-31 | 艾欧史密斯(中国)热水器有限公司 | The control method and its control device of hot water apparatus |
| CN112361614B (en) * | 2020-11-20 | 2021-12-03 | 珠海格力电器股份有限公司 | Control method and device for outlet water temperature of water heater, water heater and storage medium |
| CN113531912A (en) * | 2021-06-15 | 2021-10-22 | 宁波方太厨具有限公司 | Temperature control method, system and equipment of water heater and storage medium |
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Effective date of registration: 20221222 Address after: 241000 west side of 3 / F, No.5 office building, new energy and new materials gathering area, Fuzhou Road, Jiangbei District, Wuhu City, Anhui Province Patentee after: Wuhu Midea intelligent kitchen electricity Manufacturing Co.,Ltd. Address before: 241009 Wan Chun East Road, East District, Wuhu economic and Technological Development Zone, Anhui Patentee before: WUHU MIDEA KITCHEN AND BATH APPLIANCES MFG. Co.,Ltd. |