CN113124571A - Control method of water heater system and water heater system - Google Patents
Control method of water heater system and water heater system Download PDFInfo
- Publication number
- CN113124571A CN113124571A CN201911426187.0A CN201911426187A CN113124571A CN 113124571 A CN113124571 A CN 113124571A CN 201911426187 A CN201911426187 A CN 201911426187A CN 113124571 A CN113124571 A CN 113124571A
- Authority
- CN
- China
- Prior art keywords
- water
- water heater
- pipe
- gas
- preheating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Domestic Hot-Water Supply Systems And Details Of Heating Systems (AREA)
Abstract
The invention discloses a control method of a water heater system and the water heater system, wherein the water heater system comprises a gas water heater, the gas water heater comprises an igniter, a burner, a water inlet pipe and a water outlet pipe, the water heater system also comprises an electric control valve for controlling the on-off of a pipe where the water heater system is arranged, the electric control valve is arranged on the water inlet pipe and/or the water outlet pipe, and the control method of the water heater system comprises the following steps: acquiring a secondary water outlet signal and controlling the electric control valve to be closed; controlling an igniter of the gas water heater to ignite a burner of the gas water heater; and determining the ignition of the combustor and controlling the opening of the electric control valve. The control method of the water heater system and the water heater system enable the relighting temperature fluctuation of the gas water heater to be small, and greatly improve the use experience of users.
Description
Technical Field
The invention relates to the technical field of water heaters, in particular to a control method of a water heater system and the water heater system.
Background
Water heaters in the market, such as gas water heaters and the like, need to be turned off during hot water use of users, and perform other activities, such as applying shower gel. Because the gas heater carries out the standby phase after closing water, the combustor is flame-out, when the short time is once more boiled hot water, need light the gas heater once more, and because the preceding heat rising characteristic of cleaning and ignition burning of gas heater needs certain time to can make in the partly cold water that does not pass through the heating flows into the water heater, cause the user to cut off water temperature when opening again can produce great fluctuation, influence user and use experience.
The above is only for the purpose of assisting understanding of the technical solutions of the present invention, and does not represent an admission that the above is the prior art.
Disclosure of Invention
The invention mainly aims to provide a control method of a water heater system, and aims to solve the technical problem of large temperature fluctuation when a water heater is restarted.
In order to achieve the above object, the present invention provides a control method for a water heater system, where the water heater system includes a gas water heater, and the gas water heater includes an igniter, a burner, a water inlet pipe, and a water outlet pipe, and the control method is characterized in that the water heater system further includes an electric control valve for controlling on/off of a pipe where the water heater system is located, and the electric control valve is disposed on the water inlet pipe and/or the water outlet pipe, and the control method for the water heater system includes the following steps:
acquiring a secondary water outlet signal and controlling the electric control valve to be closed;
controlling an igniter of the gas water heater to ignite a burner of the gas water heater;
and determining that the burner is ignited, and controlling the electric control valve to be opened.
In one embodiment, the specific steps of acquiring the water re-outflow signal are as follows:
and confirming that the previous water outlet of the gas water heater is closed, and acquiring a water outlet signal again within a first preset time.
In one embodiment, the first predetermined time is less than or equal to 3 minutes.
In an embodiment, the step of acquiring the secondary water outlet signal and controlling the electronic control valve to close includes:
and acquiring a water outlet signal again, and controlling the electric control valve to close after a second preset time.
In one embodiment, the gas water heater further includes a fan and an air inlet valve assembly, and the specific steps of controlling an igniter of the gas water heater to ignite a burner of the gas water heater are as follows:
and controlling the fan to clean the combustor in front, controlling the igniter to ignite, opening the air inlet valve assembly, and igniting the combustor.
In an embodiment, the water heater system further includes a tap water pipe, a hot water pipe, and a water returning device, a first interface of the water returning device is connected to the tap water pipe, a second interface of the water returning device is connected to the hot water pipe, and the first interface is in one-way conduction with the second interface on the water returning device, when the preheating function of the gas water heater is turned on, the gas water heater controls water preheated by the gas water heater to circulate in a preheating circulation loop formed by the hot water pipe, the water returning device, the tap water pipe, and the water heater so as to perform circulating preheating, the water re-outlet signal is obtained, and the preheating function of the water heater system is turned on before the electric control valve is turned off, and the control method of the water heater system further includes the following steps:
acquiring a preheating function signal of a gas water heater for the first time, and detecting the return water temperature of the water inlet end of the water inlet pipe of the gas water heater;
confirming that the return water temperature of the water inlet end reaches a first preset temperature, controlling the gas water heater to stop preheating, and acquiring the first preheating time of the gas water heater;
confirming the circulating preheating time of the water heater according to the first preheating time;
and acquiring the signal that the water heater starts the preheating function again, and controlling the water heater to perform circulating preheating according to the circulating preheating time of the gas water heater.
In one embodiment, said confirming a cycle warm-up time of said water heater further comprises:
and correcting the circulating preheating time of the water heater according to the preset circulating compensation time.
In one embodiment, the cycle warm-up time of the water heater is calculated according to the following formula:
T＝T1/2+T0
wherein T is the cycle preheating time of the water heater, T1 is the first preheating time, and T0 is the preset cycle compensation time.
The control method of the water heater system of the invention is that the electromagnetic valve is arranged on the water inlet pipe and/or the water outlet pipe of the gas water heater, when the water outlet of the water heater system is closed for the first time and water is discharged again, the electromagnetic valve is controlled to be closed, and after the igniter of the gas water heater ignites the burner of the gas water heater, the electric control valve is controlled to be opened. Therefore, cold water can be prevented from entering the hot water pipe before the gas water heater is ignited again, the reignition temperature of the gas water heater is small in fluctuation, and the use experience of a user is greatly improved.
The invention also provides a water heater system, which comprises a gas water heater and a controller;
the gas water heater comprises a water inlet pipe and a water outlet pipe, and an electric control valve is arranged on the water inlet pipe and/or the water outlet pipe;
the controller acquires a water outlet signal again and controls the electric control valve to be closed; controlling an igniter of the gas water heater to ignite a burner of the gas water heater; and determining that the burner is ignited, and controlling the electric control valve to be opened.
In one embodiment, the electrically controlled valve is a water electromagnetic valve, a water proportional valve or an electrically operated valve.
In one embodiment, the water heater system further comprises a tap water pipe, a hot water pipe, a water return device, a temperature detector and a water pump;
the first interface of the water return device is connected to the tap water pipe, the second interface of the water return device is connected to the hot water pipe, the first interface is in one-way conduction with the second interface on the water return device, when the preheating function of the gas water heater is started, the controller controls the water preheated by the water heater to circulate in a preheating circulation loop formed by the hot water pipe, the water return device, the tap water pipe and the water heater so as to perform circulating preheating, and the water pump is arranged in the preheating circulation loop;
confirming that the preheating function of the water heater is started for the first time, and detecting the return water temperature of the gas water heater by the temperature detector;
the controller is also used for confirming that the return water temperature of the water inlet end reaches a first preset temperature, controlling the gas water heater to stop preheating and acquiring the first preheating time of the gas water heater; confirming the circulating preheating time of the water heater according to the first preheating time; and acquiring the signal that the water heater starts the preheating function again, and controlling the water heater to perform circulating preheating according to the circulating preheating time of the gas water heater.
In an embodiment, the water return device is an H-valve, a first inlet of the H-valve is the first interface, and a second inlet of the H-valve is the second interface.
In one embodiment, the water return device comprises a water return pipe and a one-way valve arranged on the water return pipe, one end of the water return pipe is connected with the hot water pipe, and the other end of the water return pipe is connected with the tap water pipe.
In one embodiment, one end of the water return pipe is connected with one end of the hot water pipe, which is far away from the gas water heater, and the other end of the water return pipe is connected with one end of the tap water pipe, which is far away from the gas water heater; or the like, or, alternatively,
one end of the water return pipe is connected with one end, far away from the gas water heater, of the hot water pipe, and the other end of the water return pipe is connected with one end, close to the gas water heater, of the tap water pipe.
The electromagnetic valve is arranged on the water inlet pipe and/or the water outlet pipe of the gas water heater, when the water outlet of the water heater system is closed for the first time and water is discharged again, the electromagnetic valve is controlled to be closed, and after an igniter of the gas water heater ignites a burner of the gas water heater, the electronic control valve is controlled to be opened. Therefore, cold water can be prevented from entering the hot water pipe before the gas water heater is ignited again, the reignition temperature of the gas water heater is small in fluctuation, and the use experience of a user is greatly 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 flow chart of one embodiment of a method of controlling a water heater system according to the present invention;
FIG. 2 is a flow chart of another embodiment of a method of controlling a water heater system according to the present invention;
FIG. 3 is a flow chart of yet another embodiment of a method of controlling a water heater system of the present invention;
FIG. 4 is a schematic structural view of an embodiment of a gas water heater of the water heater system of the present invention;
FIG. 5 is a schematic structural view of another embodiment of a gas water heater of the water heater system of the present invention;
FIG. 6 is a schematic block diagram of an embodiment of the water heater system of the present invention;
FIG. 7 is a schematic structural diagram of another embodiment of a water heater system according to the present invention;
fig. 8 is a schematic structural diagram of a water heater system according to another embodiment of the present invention.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) | Reference numerals | Name (R) |
| 100 | |
400 | |
600 | |
| 110 | Water inlet pipe | 410 | |
700 | |
| 120 | |
420 | One- |
800 | |
| 200 | |
430 | |
900 | |
| 300 | |
500 | Water pump |
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
It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is 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, the meaning of "and/or" appearing throughout is to include three juxtapositions, exemplified by "A and/or B" including either scheme A, or scheme B, or a scheme in which both A and B are satisfied.
The invention provides a control method of a water heater system.
It should be noted that, as shown in fig. 4 to 8, the water heater system includes the gas water heater 100, the gas water heater 100 includes an igniter, a burner, a water inlet pipe 110 and a water outlet pipe 120, wherein the water heater system further includes an electric control valve 700 for controlling on/off of a pipe where the water heater system is located, and the electric control valve 700 is disposed on the water inlet pipe 110 and/or the water outlet pipe 120. The inlet pipe 110 of the gas water heater 100 is communicated with the tap water pipe 200, and the outlet pipe 120 of the gas water heater 100 is communicated with the hot water pipe 300.
As shown in fig. 1, the control method of the water heater system according to the embodiment of the present invention includes the following steps:
and step S1, acquiring a water outlet signal again, and controlling the electronic control valve 700 to close.
The water re-outlet signal here means that the hot water of the previous water heater system has reached the water outlet end of the user, that is, the user has used superheated water, or the water heater system has been subjected to a preheating cycle; therefore, when the water mixing valve at the water outlet end of the user is opened again, a water outlet signal is sent again. The re-water-outlet signal may be directly sent to the controller 600 by a sensor at the water mixing valve at the water outlet end of the user, or may be a water inlet signal of the water inlet detector 900 of the gas water heater 100, or a water flow sensor sending a re-water-outlet signal. When the controller 600 acquires the water re-outlet signal, the electronic control valve 700 is controlled to be closed, and at this time, water inflow in the gas water heater 100 is stopped.
In step S2, the igniter of the gas water heater 100 is controlled to ignite the burner of the gas water heater 100.
When the electric control valve 700 is closed, the igniter of the gas water heater 100 is controlled to ignite the burner of the gas water heater 100, that is, the burner is ignited. Thus, when the user needs to discharge water again, the water path is cut off first, and the ignition of the gas water heater 100 is waited. During the period between the acquisition of the re-water-outlet signal and before ignition, cold water continuously flows in, so that the cold water reaches the water outlet pipe 120 or the hot water pipe 300 of the gas water heater 100 before the ignition of the gas water heater 100, and thus the water temperature fluctuation is large when the user uses the water heater again, and the user experience is poor. And by closing the water way before the gas water heater 100 is ignited, cold water can be effectively prevented from flowing into the water outlet pipe 120 or the hot water pipe 300 of the gas water heater 100, so that the water temperature fluctuation is small when the user boils water again, and the use experience of the user is improved.
In step S3, the ignition of the burner is determined, and the electronic control valve 700 is controlled to open.
Wherein confirmation of burner ignition may be sensed by a temperature sensor or other sensing device. When the controller 600 receives the signal of the burner ignition, the electronic control valve 700 is controlled to be opened. It is understood that the electric control valve 700 may be controlled to be opened after a preset time after the burner is ignited, or the electric control valve 700 may be opened at the same time as the burner is ignited. In order to save gas, the electrically controlled valve 700 may be opened at the same time as the burner is ignited.
According to the control method of the water heater system, the electromagnetic valve is arranged on the water inlet pipe 110 and/or the water outlet pipe 120 of the gas water heater 100, when the water heater system is closed in the previous water outlet and is discharged again, the electromagnetic valve is controlled to be closed, and after the igniter of the gas water heater 100 ignites the burner of the gas water heater 100, the electronic control valve 700 is controlled to be opened. Therefore, cold water can be prevented from entering the hot water pipe 300 before the gas water heater 100 is ignited again, the reignition temperature fluctuation of the gas water heater 100 is small, and the use experience of a user is greatly improved.
In one embodiment, referring to fig. 2, the specific steps of acquiring the water re-outflow signal are as follows:
and step S11, confirming that the last water outlet of the gas water heater 100 is closed, and acquiring a water outlet signal again within a first preset time.
Further, the first predetermined time is less than or equal to 3 minutes.
The closing signal sent by the water mixing valve at the user end or the preheating completion signal can be used to confirm that the previous water outlet of the gas water heater 100 is closed. Since the temperature of the water heated first in the hot water pipe 300 is decreased when the previous water discharge of the gas water heater 100 is turned off, and the temperature of the water in the hot water pipe 300 is decreased to a low degree within the first preset time, the user can still use the hot water in the hot water pipe 300, and the water heated after the gas water heater 100 is ignited can be mixed in the hot water pipe 300 to reach the temperature required by the user. And after the first preset time, the temperature of the water temperature drop is too low to be used again by the user. At this time, the pipeline of the gas water heater 100 needs to be preheated, so that the water outlet end of the user can realize zero cold water outlet. The first preset time is specifically less than or equal to 3 minutes, and can be selected and calculated according to the use requirements of the user. For example, the first predetermined time may be 1 minute, 2 minutes, 2.5 minutes, 3 minutes, etc. Therefore, after confirming that the water outlet of the gas water heater 100 is turned off for the previous time, within the first preset time, the re-water-outlet signal is obtained, and then the electric control valve 700 is controlled to be closed, so that the electric control valve 700 is turned on again after the gas water heater 100 is ignited. Therefore, the electric control valve 700 can be controlled to be closed at a proper time, the function of small start-stop temperature fluctuation is effectively utilized, and the small fluctuation of the water outlet temperature is realized. The function is prevented from being started under the condition that the function with small start-stop temperature fluctuation cannot be realized.
In an embodiment, the step of obtaining the water re-discharging signal and controlling the electronic control valve 700 to close includes:
and step S12, acquiring a water re-outlet signal, and controlling the electronic control valve 700 to close after a second preset time.
It should be noted that the re-water signal may be sent by a detector, since the water flow may fluctuate slightly in the pipeline, so as to ensure that an accurate re-water signal is obtained, rather than an error signal caused by the fluctuation of the water flow. After the second preset time of the water outlet signal is acquired, the electronic control valve 700 is controlled to close, and an error signal is prevented from being sent out. The second preset time may be set according to a standard in the industry, and in general, the second preset time may be set to 0.5 second.
In practical application, as shown in fig. 2, the gas water heater 100 further includes a blower and an air inlet valve assembly, and the specific steps of controlling an igniter of the gas water heater 100 to ignite a burner of the gas water heater 100 are as follows:
and step S21, controlling the fan to clean the burner, controlling the igniter to ignite, opening the air inlet valve assembly and igniting the burner.
After the user closes the water, the water heater enters a post-cleaning stage and finally enters a standby stage, the fan stops when the water heater is in standby, the burner is flamed out, and the air inlet valve assembly is closed. After the water outlet signal is obtained again, the controller 600 controls the electric control valve 700 to close, the water path is cut off, meanwhile, the fan is started to clean the burner, then the igniter is controlled to ignite, and the valve body of the air inlet valve assembly is opened, so that the burner is ignited.
In an embodiment, as shown in fig. 4 to 8, the water heater system further includes a water supply pipe 200, a hot water pipe 300, and a water returning device 400, a first interface of the water returning device 400 is connected to the water supply pipe 200, a second interface of the water returning device 400 is connected to the hot water pipe 300, and on the water returning device 400, the first interface is in one-way communication with the second interface. When the preheating function of the gas water heater 100 is turned on, the heating device may be turned on to heat the incoming tap water, and the built-in water pump 500 may be turned on to allow the heated water to flow into the hot water pipe 300. Since the mixing valve is not opened, the water flowing into the hot water pipe 300 may flow into the tap water pipe 200 through the water returning device 400. Therefore, the water preheated by the water heater can be controlled to circulate in a preheating circulation loop consisting of the hot water pipe 300, the water return device 400, the tap water pipe 200 and the water heater so as to carry out circulating preheating.
As shown in fig. 3, in S1, before the re-water-out signal is obtained and the electronic control valve 700 is controlled to be closed, the water heater system starts the preheating function, and the control method of the water heater system further includes the following steps:
and S001, acquiring a preheating function signal of the gas water heater 100 for the first time, and detecting the return water temperature of the water inlet end of the water inlet pipe 110 of the gas water heater 100.
By detecting the return water temperature at the water inlet end of the gas water heater 100, it can be determined when the heated water reaches the water inlet end of the water heater. Specifically, the return water temperature may be detected by the inlet water temperature detector 800 provided at the inlet pipe 110 of the gas water heater 100.
Step S002, confirming that the return water temperature of the water inlet end reaches a first preset temperature, controlling the gas water heater 100 to stop preheating, and obtaining the first preheating time of the gas water heater 100;
when the return water temperature of the water inlet end of the water inlet pipe 110 of the gas water heater 100 reaches a first preset temperature, it can be determined that the heated water reaches the water inlet end of the water heater, and then the gas water heater 100 can be controlled to stop preheating, and the time from the first opening of the water heater to the stop preheating of the water heater, i.e. the first preheating time of the water heater, is obtained.
Step S003, confirming the circulating preheating time of the water heater according to the first preheating time;
wherein, the circulation preheating time can just obtain hot water from the gondola water faucet when the user opens the muddy water valve of water end. That is, when the gas water heater 100 starts the preheating function again, if the preheating time of the gas water heater 100 is shorter than the cycle preheating time, the water at the shower head is still cold water when the user opens the water mixing valve at the water using end; if the gas water heater 100 is preheated for a time period longer than the cycle preheating time, excess water enters the tap water line 200. It should be understood that the first preheating time may substantially include the time that the heated water flows through the hot water pipe 300 and the tap water pipe 200, and thus, the time that the heated water flows through the hot water pipe 300 may be obtained according to the lengths of the hot water pipe 300 and the tap water pipe 200.
Because the temperature of the water heated firstly is reduced in the pipeline, the circulating preheating time of the water heater can be corrected according to the preset circulating compensation time when the circulating preheating time of the water heater is calculated, and the comfort of water use can be further improved. The sum of the time that the heated water flows through the hot water pipe 300 and the preset circulation compensation time can be used as the circulation preheating time of the water heater.
In one embodiment of the present invention, the hot water line 300 and the tap water line 200 are substantially the same length, so that the time taken for the heated water to flow through the hot water line 300 is approximately half of the first preheating time. That is, in one embodiment of the present invention, the cycle warm-up time of a water heater can be calculated according to the following formula:
T＝T1/2+T0
wherein T is the cycle preheating time of the water heater, T1 is the first preheating time, and T0 is the preset cycle compensation time.
In one embodiment of the present invention, the predetermined cyclic compensation time T0 may be 0-60 seconds.
In other embodiments of the present invention, the temperature of the water using end may be detected when the preheating function is first turned on, and the temperature of the water using end is sent to the water heater, so that the water heater is controlled to stop preheating when the temperature of the water using end reaches a preset temperature, and the first preheating time of the water heater can be directly used as the time that the heated water passes through the hot water pipe 300.
And step S004, acquiring a signal for starting the preheating function of the water heater again, and controlling the water heater to perform circulating preheating according to the circulating preheating time of the gas water heater 100.
In this embodiment, when the preheating function of the water heater is turned on again, the heating device and the water pump 500 may be turned on at the same time, and the heating device and the water pump 500 may be turned off after the circulation preheating time, so that the hot water just reaches the water using end.
According to the control method of the water heater system, when the preheating function of the water heater is started for the first time, the first preheating time of the water heater is obtained according to the return water temperature of the water inlet end of the gas water heater 100, the circulating preheating time of the water heater is calculated according to the first preheating time, and when the preheating function of the gas water heater 100 is started again, the water heater is controlled to perform circulating preheating according to the circulating preheating time of the gas water heater 100. From this, can acquire suitable preheating time automatically to can convenient and fast ground preheat the control according to the preheating time who acquires to the water heater, thereby can reduce the heating of unnecessary pipeline, compare in zero cold water pipeline and the heat preservation circulating line that full pipe circulation preheats, can reduce the time of preheating the waiting, and saved the gas, improved user experience greatly. In addition, the half-pipe water preheating function does not heat the tap water pipe 200 or only heats a small part of cold water of the cold water pipe when heating, so that the user can not be influenced to use the cold water after using the zero cold water, and products such as a water purifier, an intelligent closestool and the like which are afraid of hot water are protected.
When the user finishes using the half-pipe water preheating function, the water inlet pipe 110 of the gas water heater 100 can enter cold water when the water heater needs to be started due to the half-pipe water preheating function. Therefore, by matching with the function of small start-stop temperature fluctuation, namely after the preheating function of the user is started, the user needs to use boiled water in a short time. At the moment, a secondary water outlet signal is obtained, and the electric control valve 700 is controlled to be closed; controlling an igniter of the gas water heater 100 to ignite a burner of the gas water heater 100; the ignition of the burner is determined and the electronically controlled valve 700 is controlled to open. So, can guarantee to open the temperature fluctuation minimum again, realize that zero cold water opens promptly and heats promptly, the temperature fluctuation is little when the user closes water and opens again for user's shower is experienced and is promoted greatly. And the zero-cold water product is more energy-saving, and the best zero-cold water effect is achieved by using the least preheating time and the optimal preheating gas consumption. In addition, only through setting up automatically controlled valve 700, alright realize that the short time opens and stops that the temperature fluctuation is little, experience good effect, compare in the buffer tank through the water pitcher model, greatly reduced overall cost, and make that system is small, installation and occupation space are little.
Referring to fig. 4 to 8, the present invention further provides a water heater system, which includes a gas water heater 100 and a controller 600;
the gas water heater 100 comprises a water inlet pipe 110 and a water outlet pipe 120, and an electric control valve 700 is arranged on the water inlet pipe 110 and/or the water outlet pipe 120;
the controller 600 acquires a water re-outlet signal and controls the electric control valve 700 to close; controlling an igniter of the gas water heater 100 to ignite a burner of the gas water heater 100; the ignition of the burner is determined and the electronically controlled valve 700 is controlled to open.
In this embodiment, the electronically controlled valve 700 is electrically connected to the controller 600. The electric control valve 700 may be specifically a water solenoid valve, a water proportional valve, an electric valve, a water switching valve, etc., and only needs to be able to control the on/off of the pipe where the electric control valve is located through the controller 600. By arranging the electric control valves 700 on both the water inlet pipe 110 and the water outlet pipe 120, in actual use, the waterway can be cut off only by controlling one of the electric control valves 700 to be closed. By arranging the two electric control valves 700, when one electric control valve 700 fails, the other electric control valve 700 works, so that the operation stability of the water heater system is ensured. Generally, only one electrically controlled valve 700 may be provided on the inlet pipe 110 or the outlet pipe 120 of the gas water heater 100. Preferably, the electric control valve 700 is disposed on the water outlet pipe 120 of the gas water heater 100, so that the electric control valve 700 has the best water stopping effect by utilizing the characteristics of the electric control valve 700 and the pipeline inertia characteristics, and air does not exist in the heat exchanger to affect the use of the gas water heater 100. The re-water-outlet signal may be directly sent to the controller 600 by a sensor at the water mixing valve at the water outlet end of the user, or may be a water inlet signal of the water inlet detector 900 of the gas water heater 100, or a water flow sensor sending a re-water-outlet signal. The water inlet detector 900 may be a water pressure sensor or a water flow sensor.
After the user closes the water, the water heater enters a post-cleaning stage and finally enters a standby stage, the fan stops when the water heater is in standby, the burner is flamed out, and the air inlet valve assembly is closed. After the water outlet signal is obtained again, the controller 600 controls the electric control valve 700 to close, the water path is cut off, meanwhile, the fan is started to clean the burner, then the igniter is controlled to ignite, and the valve body of the air inlet valve assembly is opened, so that the burner is ignited.
According to the water heater system, the electromagnetic valve is arranged on the water inlet pipe 110 and/or the water outlet pipe 120 of the gas water heater 100, when the water heater system is turned off for the first time and is turned off for the second time, the electromagnetic valve is controlled to be turned off, and after the igniter of the gas water heater 100 ignites the burner of the gas water heater 100, the electronic control valve 700 is controlled to be turned on. Therefore, cold water can be prevented from entering the hot water pipe 300 before the gas water heater 100 is ignited again, the reignition temperature fluctuation of the gas water heater 100 is small, and the use experience of a user is greatly improved.
In a preferred embodiment, as shown in fig. 6 to 8, the water heater system further includes a water pipe 200, a hot water pipe 300, a water returning device 400, a temperature detector 800 and a water pump 500;
the first interface of the water returning device 400 is connected to the tap water pipe 200, the second interface of the water returning device 400 is connected to the hot water pipe 300, the first interface is in one-way conduction with the second interface on the water returning device 400, when the preheating function of the gas water heater 100 is started, the controller 600 controls the water preheated by the water heater to circulate in a preheating circulation loop formed by the hot water pipe 300, the water returning device 400, the tap water pipe 200 and the water heater so as to perform circulating preheating, and the water pump 500 is arranged in the preheating circulation loop;
confirming that the preheating function of the water heater is started for the first time, and detecting the return water temperature of the gas water heater 100 by the temperature detector 800;
the controller 600 is further configured to determine that a return water temperature at the water inlet end reaches a first preset temperature, control the gas water heater 100 to stop preheating, and obtain a first preheating time of the gas water heater 100; confirming the cyclic preheating time of the water heater 100 according to the first preheating time; and acquiring a signal for starting the preheating function of the water heater 100 again, and controlling the water heater to perform circulating preheating according to the circulating preheating time of the gas water heater 100.
When the preheating function of the gas water heater 100 is turned on, the preheated water is driven by the water pump 500 to circulate in the preheating circulation loop, thereby realizing the preheating function. The water pump 500 may be specifically disposed on the water inlet pipe 110 of the gas water heater 100. By detecting the return water temperature at the water inlet end of the gas water heater 100, it can be determined when the heated water reaches the water inlet end of the water heater. The return water temperature is detected by a temperature detector 800 provided at the water inlet pipe 110 of the gas water heater 100. When the return water temperature of the water inlet end of the water inlet pipe 110 of the gas water heater 100 reaches a first preset temperature, it can be determined that the heated water reaches the water inlet end of the water heater, and then the gas water heater 100 can be controlled to stop preheating, and the time from the first opening of the water heater to the stop preheating of the water heater, i.e. the first preheating time of the water heater, is obtained.
Wherein, the circulation preheating time can just obtain hot water from the gondola water faucet when the user opens the muddy water valve of water end. That is, when the gas water heater 100 starts the preheating function again, if the preheating time of the gas water heater 100 is shorter than the cycle preheating time, the water at the shower head is still cold water when the user opens the water mixing valve at the water using end; if the gas water heater 100 is preheated for a time period longer than the cycle preheating time, excess water enters the tap water line 200. It should be understood that the first preheating time may substantially include the time that the heated water flows through the hot water pipe 300 and the tap water pipe 200, and thus, the time that the heated water flows through the hot water pipe 300 may be obtained according to the lengths of the hot water pipe 300 and the tap water pipe 200.
Because the temperature of the water heated firstly is reduced in the pipeline, the circulating preheating time of the water heater can be corrected according to the preset circulating compensation time when the circulating preheating time of the water heater is calculated, and the comfort of water use can be further improved. The sum of the time that the heated water flows through the hot water pipe 300 and the preset circulation compensation time can be used as the circulation preheating time of the water heater.
In one embodiment of the present invention, the hot water line 300 and the tap water line 200 are substantially the same length, so that the time taken for the heated water to flow through the hot water line 300 is approximately half of the first preheating time. That is, in one embodiment of the present invention, the cycle warm-up time of a water heater can be calculated according to the following formula:
T＝T1/2+T0
wherein T is the cycle preheating time of the water heater, T1 is the first preheating time, and T0 is the preset cycle compensation time.
In one embodiment of the present invention, the predetermined cyclic compensation time T0 may be 0-60 seconds.
In other embodiments of the present invention, the temperature of the water using end may be detected when the preheating function is first turned on, and the temperature of the water using end is sent to the water heater, so that the water heater is controlled to stop preheating when the temperature of the water using end reaches a preset temperature, and the first preheating time of the water heater can be directly used as the time that the heated water passes through the hot water pipe 300.
When the preheating function of the water heater is started again, the heating device and the water pump 500 can be started at the same time, and the heating device and the water pump 500 are closed after the circulating preheating time, so that the hot water just reaches the water using end.
According to the water heater system provided by the embodiment of the invention, the water return device 400 is arranged, so that the zero cold water can be heated immediately after being opened, when the preheating function of the water heater is started for the first time, the first preheating time of the water heater is obtained according to the water return temperature of the water inlet end of the gas water heater 100, the circulating preheating time of the water heater is calculated according to the first preheating time, and when the preheating function of the gas water heater 100 is started again, the water heater is controlled to be circularly preheated according to the circulating preheating time of the gas water heater 100. From this, can acquire suitable preheating time automatically to can convenient and fast ground preheat the control according to the preheating time who acquires to the water heater, thereby can reduce the heating of unnecessary pipeline, compare in zero cold water pipeline and the heat preservation circulating line that full pipe circulation preheats, can reduce the time of preheating the waiting, and saved the gas, improved user experience greatly. In addition, the half-pipe water preheating function does not heat the tap water pipe 200 or only heats a small part of cold water of the cold water pipe when heating, so that the user can not be influenced to use the cold water after using the zero cold water, and products such as a water purifier, an intelligent closestool and the like which are afraid of hot water are protected.
When the user finishes using the half-pipe water preheating function, the water inlet pipe 110 of the gas water heater 100 can enter cold water when the water heater needs to be started due to the half-pipe water preheating function. Therefore, by matching with the function of small start-stop temperature fluctuation, namely after the preheating function of the user is started, the user needs to use boiled water in a short time. At the moment, a secondary water outlet signal is obtained, and the electric control valve 700 is controlled to be closed; controlling an igniter of the gas water heater 100 to ignite a burner of the gas water heater 100; the ignition of the burner is determined and the electronically controlled valve 700 is controlled to open. So, can guarantee to open the temperature fluctuation minimum again, realize that zero cold water opens promptly and heats promptly, the temperature fluctuation is little when the user closes water and opens again for user's shower is experienced and is promoted greatly. And the zero-cold water product is more energy-saving, and the best zero-cold water effect is achieved by using the least preheating time and the optimal preheating gas consumption. In addition, only through setting up automatically controlled valve 700, alright realize that the short time opens and stops that the temperature fluctuation is little, experience good effect, compare in the buffer tank through the water pitcher model, greatly reduced overall cost, and make that system is small, installation and occupation space are little.
In an embodiment, referring to fig. 8, the water returning device 400 is an H-valve 410, a first inlet of the H-valve 410 is a first interface, and a second inlet of the H-valve 410 is a second interface.
In the present embodiment, the H-valve 410 is electrically connected to the controller 600. The H-valve 410 may be connected to the hot water pipe 300 and the end of the water pipe 200 away from the gas water heater 100. By arranging the H-valve 410, the first inlet of the H-valve 410 is a first interface and is connected with the hot water pipe 300, and the second inlet is a second interface and is connected with the tap water pipe 200. The controller 600 can control the H-valve 410 to conduct from the first inlet to the second inlet in one way, and can also control the H-valve 410 to stop water from flowing to the user side. So, when needs use half tub of preheating function, only need to make first entry to second entry unidirectional flux, alright realize half tub of water preheating. The function of preheating the half-pipe water can be realized only by arranging the H valve 410, and the water preheating device is simple in structure, convenient to realize and easy to control.
In another embodiment, as shown in fig. 6 and 7, the water returning device 400 includes a water returning pipe 430 and a check valve 420 provided on the water returning pipe 430, one end of the water returning pipe 430 is connected to the hot water pipe 300, and the other end of the water returning pipe 430 is connected to the tap water pipe 200.
In the present embodiment, the hot water pipe 300 is connected to the tap water pipe 200 through the water return pipe 430, and the check valve 420 is connected to the water return pipe 430 in series, so that the check valve 420 is communicated from the hot water pipe 300 to the tap water pipe 200 in one direction. The water return mode of the water return pipe 430 and the one-way valve 420 is simple in structure, low in cost and easy to achieve. It can be understood that, when the water heater system is in the preheating function, the water mixing valve at the user end can be controlled to be closed to prevent the water flow from flowing out, so that the air flow of the hot water pipe 300 flows into the tap water pipe 200 to circulate, thereby realizing the preheating.
In one embodiment, referring to fig. 6, one end of the water return pipe 430 is connected to one end of the hot water pipe 300 away from the gas water heater 100, and the other end of the water return pipe 430 is connected to one end of the tap water pipe 200 away from the gas water heater 100. So, can shorten wet return 430's length greatly, make full use of water pipe 200 simplifies the pipeline structure for the structure of whole water heater system is simpler. At this time, in order to increase the service life of the water pipe 200, the same high temperature resistant material as that of the hot water pipe 300 may be used as the water pipe 200.
In another embodiment, referring to fig. 7, one end of the water return pipe 430 is connected to one end of the hot water pipe 300 away from the gas water heater 100, and the other end of the water return pipe 430 is connected to one end of the tap water pipe 200 close to the gas water heater 100. It is understood that since the tap water pipe 200 is generally supplied with only cold water, the hot water pipe 300 is supplied with hot water, and thus the tap water pipe 200 and the hot water pipe 300 are made of different materials. The hot water pipe 300 is made of a high temperature resistant material, and the water pipe 200 is made of a common material, for example, if hot water passes through the water pipe 200 made of the common material for a long time, the aging and damage of the water pipe 200 are easily accelerated. Therefore, by additionally providing the water return pipe 430 to be connected to one end of the tap water pipe 200 close to the gas water heater 100, the tap water pipe 200 is prevented from being used in a large area in a preheating cycle, so that the service life of the tap water pipe 200 is prolonged, and the operation stability of the system is improved. To further improve the system stability, the return pipe 430 may use the same high temperature resistant material as the hot water pipe 300.
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 (14)
1. The control method of the water heater system comprises a gas water heater, wherein the gas water heater comprises an igniter, a burner, a water inlet pipe and a water outlet pipe, and is characterized by further comprising an electric control valve for controlling the on-off of a pipe where the gas water heater is located, the electric control valve is arranged on the water inlet pipe and/or the water outlet pipe, and the control method of the water heater system comprises the following steps:
acquiring a secondary water outlet signal and controlling the electric control valve to be closed;
controlling an igniter of the gas water heater to ignite a burner of the gas water heater;
and determining that the burner is ignited, and controlling the electric control valve to be opened.
2. The control method of the water heater system according to claim 1, wherein the step of acquiring the water re-outflow signal comprises the steps of:
and confirming that the previous water outlet of the gas water heater is closed, and acquiring a water outlet signal again within a first preset time.
3. The control method of a water heater system as set forth in claim 2, wherein the first preset time is less than or equal to 3 minutes.
4. The control method of the water heater system according to claim 1, wherein the step of obtaining the water re-outlet signal and controlling the electric control valve to close comprises the following steps:
and acquiring a water outlet signal again, and controlling the electric control valve to close after a second preset time.
5. The control method of the water heater system according to claim 1, wherein the gas water heater further comprises a fan and an air intake valve assembly, and the specific steps of controlling an igniter of the gas water heater to ignite a burner of the gas water heater are as follows:
and controlling the fan to clean the combustor in front, controlling the igniter to ignite, opening the air inlet valve assembly, and igniting the combustor.
6. The control method of a water heater system as recited in any one of claims 1 to 5, the water heater system also comprises a tap water pipe, a hot water pipe and a water return device, wherein a first interface of the water return device is connected to the tap water pipe, a second interface of the water return device is connected to the hot water pipe, and on the water return device, the first interface is in one-way conduction with the second interface, when the preheating function of the gas water heater is started, controlling the water preheated by the gas water heater to circulate in a preheating circulation loop consisting of the hot water pipe, the water return device, the tap water pipe and the water heater, the control method of the water heater system further comprises the following steps:
acquiring a preheating function signal of a gas water heater for the first time, and detecting the return water temperature of the water inlet end of the water inlet pipe of the gas water heater;
confirming that the return water temperature of the water inlet end reaches a first preset temperature, controlling the gas water heater to stop preheating, and acquiring the first preheating time of the gas water heater;
confirming the circulating preheating time of the water heater according to the first preheating time;
and obtaining the preheating function signal of the gas water heater, and controlling the water heater to perform circulating preheating according to the circulating preheating time of the gas water heater.
7. The method of controlling a water heater system as recited in claim 6, wherein said ascertaining a cycle warm-up time of said gas water heater further comprises:
and correcting the circulating preheating time of the water heater according to the preset circulating compensation time.
8. The control method of a water heater system as claimed in claim 7, wherein the cyclic warm-up time of the gas water heater is calculated according to the following formula:
T＝T1/2+T0
wherein T is the cycle preheating time of the gas water heater, T1 is the first preheating time, and T0 is the preset cycle compensation time.
9. A water heater system, comprising:
the gas water heater comprises a water inlet pipe and a water outlet pipe, wherein an electric control valve is arranged on the water inlet pipe and/or the water outlet pipe;
the controller acquires a water re-outlet signal and controls the electric control valve to be closed; controlling an igniter of the gas water heater to ignite a burner of the gas water heater; and determining that the burner is ignited, and controlling the electric control valve to be opened.
10. The water heater system of claim 9, wherein the electrically controlled valve is a water solenoid valve, a water proportional valve, or an electrically operated valve.
11. The water heater system as recited in claim 9 further comprising a tap water pipe, a hot water pipe, a water return device, a temperature detector, and a water pump;
the first interface of the water return device is connected to the tap water pipe, the second interface of the water return device is connected to the hot water pipe, the first interface is in one-way conduction with the second interface on the water return device, when the preheating function of the gas water heater is started, the controller controls the water preheated by the water heater to circulate in a preheating circulation loop formed by the hot water pipe, the water return device, the tap water pipe and the water heater so as to perform circulating preheating, and the water pump is arranged in the preheating circulation loop;
confirming that the preheating function of the water heater is started for the first time, and detecting the return water temperature of the gas water heater by the temperature detector;
the controller is also used for confirming that the return water temperature of the water inlet end reaches a first preset temperature, controlling the gas water heater to stop preheating and acquiring the first preheating time of the gas water heater; confirming the circulating preheating time of the water heater according to the first preheating time; and acquiring the signal that the water heater starts the preheating function again, and controlling the water heater to perform circulating preheating according to the circulating preheating time of the gas water heater.
12. The water heater system of claim 11, wherein the water return device is an H-valve, the first inlet of the H-valve being the first port, the second inlet of the H-valve being the second port.
13. The water heater system as recited in claim 11 wherein said water return means comprises a water return pipe and a one-way valve disposed on said water return pipe, one end of said water return pipe being connected to said hot water pipe and the other end of said water return pipe being connected to said tap water pipe.
14. The water heater system as recited in claim 11 wherein one end of said water return pipe is connected to an end of said hot water pipe remote from said gas water heater and another end of said water return pipe is connected to an end of said tap water pipe remote from said gas water heater; or the like, or, alternatively,
one end of the water return pipe is connected with one end, far away from the gas water heater, of the hot water pipe, and the other end of the water return pipe is connected with one end, close to the gas water heater, of the tap water pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911426187.0A CN113124571A (en) | 2019-12-31 | 2019-12-31 | Control method of water heater system and water heater system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911426187.0A CN113124571A (en) | 2019-12-31 | 2019-12-31 | Control method of water heater system and water heater system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113124571A true CN113124571A (en) | 2021-07-16 |
Family
ID=76771174
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911426187.0A Pending CN113124571A (en) | 2019-12-31 | 2019-12-31 | Control method of water heater system and water heater system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113124571A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113701355A (en) * | 2021-08-24 | 2021-11-26 | 广东万和新电气股份有限公司 | Gas water heating system and control method thereof |
-
2019
- 2019-12-31 CN CN201911426187.0A patent/CN113124571A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113701355A (en) * | 2021-08-24 | 2021-11-26 | 广东万和新电气股份有限公司 | Gas water heating system and control method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN211695444U (en) | Water heater system | |
| EP3270075B1 (en) | Gas-fired water heater with external pump for regulating temperature of outlet water | |
| US8662022B2 (en) | Water heater | |
| US8437626B2 (en) | Mixed energy heater with constant temperature control | |
| US8733297B2 (en) | Water heater | |
| EP3333493A1 (en) | Water circulation module and hot water system using the same | |
| CA2774567C (en) | Control algorithm for water heater | |
| JP4333651B2 (en) | Water heater | |
| KR100968701B1 (en) | Method for controlling hot-water temperature of a boiler according to direct water temperature in the boiler with fast hot-water function | |
| CN113124571A (en) | Control method of water heater system and water heater system | |
| CN208751007U (en) | Central hot water gas heater and its application system | |
| CN111457597B (en) | Water supply device, water supply system, control method of water supply system and water heater | |
| CN111426055A (en) | Water heater and control method thereof | |
| JP4002371B2 (en) | Bath device with water heater | |
| CN210624958U (en) | Water inlet adjusting device of water heater | |
| JPH0530167Y2 (en) | ||
| CN208635317U (en) | Zero cold water water heater | |
| CN208635316U (en) | Zero cold water water heater | |
| JP3172015B2 (en) | Automatic bath apparatus and hot water heating method in the apparatus | |
| JPH0422169Y2 (en) | ||
| JPH03282157A (en) | Hot water mild heating control device in bath apparatus | |
| JPH0413689Y2 (en) | ||
| JP3242048B2 (en) | Water heater | |
| CN113790529A (en) | Zero cold water pressurization method for gas water heater | |
| JPH0225070Y2 (en) |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |