CN112556195B - Water heater control method and water heater - Google Patents
Water heater control method and water heater Download PDFInfo
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- CN112556195B CN112556195B CN202011431225.4A CN202011431225A CN112556195B CN 112556195 B CN112556195 B CN 112556195B CN 202011431225 A CN202011431225 A CN 202011431225A CN 112556195 B CN112556195 B CN 112556195B
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- water heater
- temperature
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- heating
- threshold value
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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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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N1/00—Regulating fuel supply
- F23N1/005—Regulating fuel supply using electrical or electromechanical means
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)
Abstract
The invention provides a control method of a water heater, wherein the water heater is provided with a plurality of N temperature difference thresholds, and each temperature difference threshold is provided with a corresponding heating current I 1 And heating current I of each temperature difference threshold 1 The control method of the water heater comprises a heating process which is increased along with the increase of the temperature difference threshold value, and the heating process comprises the following steps: acquiring water heater water inlet temperature T 1 Water outlet temperature T of water heater 2 (ii) a Determining water inlet T of water heater 1 Water outlet T of water heater 2 Temperature difference Δ T therebetween 1 (ii) a Determining the sum of 1 A closest threshold temperature difference value less than or greater than Δ T 1 Controlling the water heater to heat the water according to the heating current I corresponding to the temperature difference threshold value 1 Heating is carried out. The invention collects the temperature T of the water inlet of the water heater 1 Water outlet temperature T of water heater 2 The temperature difference is monitored in real time, so that gradient heating is realized, and overhigh water temperature is avoided while quick heating is achieved.
Description
Technical Field
The present disclosure relates to water heaters, and particularly to a water heater and a control method thereof.
Background
The water heater is used as a heating device, can heat domestic water, and is convenient for a user to take a bath and wash clothes. The existing water heaters can be divided into electric water heaters, gas water heaters, solar water heaters, magnetic water heaters, air energy water heaters, heating water heaters and the like according to different principles. The gas water heater adopts gas combustion heating, has the advantage that the heating is fast, small, but the gas heating is wayward, easily leads to the temperature too high, and when using too much, loses the temperature fast, unstablely.
Disclosure of Invention
The invention provides a water heater control method and a water heater, and aims to realize rapid heating of the water heater.
The invention provides a control method of a water heater, wherein the water heater is provided with N temperature difference thresholds, and each temperature difference threshold is provided with a corresponding heating current I 1 And heating current I of each temperature difference threshold 1 And the control method of the water heater comprises a heating process which is increased along with the decrease of the temperature difference threshold value, wherein the heating process comprises the following steps:
acquiring water heater water inlet temperature T 1 Water outlet temperature T of water heater 2 ；
Determining water inlet T of water heater 1 Water outlet T of water heater 2 In betweenTemperature difference Δ T 1 ；
Determining the sum Δ T 1 A closest threshold temperature difference value less than or greater than Δ T 1 Controlling the water heater to heat the water according to the heating current I corresponding to the temperature difference threshold value 1 Heating is carried out.
Further, the water heater is provided with a plurality of N target temperature difference threshold values, and each target temperature difference threshold value is provided with a corresponding regulating current I 2 And the regulating current I of each target temperature difference threshold value 1 Decreasing with increasing target temperature differential threshold, the heating process further comprising:
collecting a preset target temperature T in a heating process 3 ；
Determining water outlet T of water heater 2 And a preset target temperature T 3 Temperature difference Δ T therebetween 2 ；
Determining the sum of 2 A closest target temperature difference threshold value, and the target temperature difference threshold value is less than or greater than delta T 2 Obtaining the adjusting current I corresponding to the target temperature difference threshold value 2 Controlling the water heater according to the current I = I 1 -I 2 Or I = I 1 +I 2 Heating is carried out.
Furthermore, the heating processes are provided with a plurality of N, and the preset target temperature T in each heating process 3 Different.
Furthermore, the water heater is provided with N temperature setting thresholds, and each temperature setting threshold is provided with a corresponding intelligent target temperature T 4 The water heater control method further comprises an intelligent heating process, wherein the intelligent heating process comprises the following steps:
acquiring water heater water inlet temperature T 1 ；
Determining the sum of 1 A closest temperature set threshold value less than or greater than T 1 Controlling the water heater to set the intelligent target temperature T corresponding to the threshold value 4 Set to a preset target temperature T 3 Heating is carried out according to a heating process.
Still further, the water heater control method further includes a combustion monitoring process:
collecting flame combustion signals in the water heater;
if the flame combustion signal is not acquired, stopping gas supply;
and if the flame combustion signal is acquired, heating according to a heating process or an intelligent heating process.
Further, if the flame burning signal is collected, heating according to a heating process or an intelligent heating process further comprises:
collecting a temperature signal, and stopping gas supply if the temperature signal is not collected;
and if the temperature signal is acquired, heating according to a heating process or an intelligent heating process.
Still further, the water heater control method further comprises an ignition process, which is as follows:
carrying out pulse discharge;
and opening a proportional valve for supplying fuel gas to ensure that the fuel gas is ignited under the action of electricity.
Still further, the water heater control method further comprises a starting process, wherein the starting process is as follows:
and starting a water flow control valve, monitoring water pressure, and starting an ignition process if the water pressure reaches a target pressure.
Still further, the start-up process further comprises: and if the water pressure does not reach the target pressure, starting the supercharging equipment to increase the water pressure.
The invention also discloses a water heater applying the water heater control method, which comprises a controller, a human-computer interaction device, a water heater water inlet temperature sensor, a water heater water outlet temperature sensor, a gas proportional valve, a lighting device, a water pump, a water flow control valve and a water pressure detection sensor, wherein the controller is respectively electrically connected with the human-computer interaction device, the water heater water inlet temperature sensor, the water heater water outlet temperature sensor, the gas proportional valve, the lighting device, the water pump, the water flow control valve and the water pressure detection sensor.
Compared with the prior art, the invention collects the temperature T of the water inlet of the water heater 1 Water outlet temperature T of water heater 2 The temperature difference is monitored in real time, so that gradient heating is realized, and overhigh water temperature is avoided while quick heating is achieved.
Detailed Description
In order to make the technical solutions of the present invention better understood by those skilled in the art, the technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments.
The water heater comprises a controller, a human-computer interaction device, a water heater water inlet temperature sensor, a water heater water outlet temperature sensor, a gas proportional valve, a lighting device, a water pump, a water flow control valve and a water pressure detection sensor, wherein the controller is respectively electrically connected with the human-computer interaction device, the water heater water inlet temperature sensor, the water heater water outlet temperature sensor, the gas proportional valve, the lighting device, the water pump, the water flow control valve and the water pressure detection sensor.
The controller of the water heater is provided with N temperature difference threshold values, and each temperature difference threshold value is provided with corresponding heating current I 1 And heating current I of each temperature difference threshold 1 Increasing as the temperature difference threshold decreases.
Wherein the gas proportional valve is used for controlling gas flow and heating current I 1 Controlling the opening of gas proportional valve, heating current I 1 The larger the opening degree of the gas proportional valve is, the larger the gas flow is, the more violent the gas combustion is, and the faster the heating is.
The water heater control method provided by the embodiment of the invention comprises a heating process, wherein the heating process comprises the following steps:
s11 collecting water heater water inlet temperature T 1 Water outlet temperature T of water heater 2 ；
Wherein, the water inlet temperature sensor of the water heater detects the water inlet temperature T of the water heater in real time 1 Real-time detection of water heater water outlet temperature T by water heater water outlet temperature sensor 2 ；
S12 determining water inlet T of water heater 1 Water outlet T of water heater 2 Temperature difference Δ T therebetween 1 ；
Wherein the controller obtains the temperature difference Delta T in real time 1 ；
S13 determination and Δ T 1 A closest threshold temperature difference value less than or greater than Δ T 1 Controlling the water heater to heat current I according to the temperature difference threshold value 1 Heating is carried out;
wherein the temperature difference threshold is greater than Δ T 1 . Taking the embodiment of the invention as an example, the temperature difference threshold is set to be 3, namely 10 ℃, 20 ℃ and 30 ℃, and when the temperature difference threshold is 10 ℃, I 1 =2x; when the temperature difference threshold is 20 ℃, I 1 =1.5x; when the temperature difference threshold is 30 ℃, I 1 ＝x。
During the heating process, if Δ T 1 =5 ℃, then according to I 1 The method is characterized in that the gas proportional valve is powered by 2x, so that the gas proportional valve has a large opening degree, and the heating efficiency is improved; at Δ T 1 When =10 ℃, according to I 1 The power supply is carried out on the gas proportional valve by the value of =1.5x, so that the gas proportional valve has a middle opening degree and is stably heated; at Δ T 1 When =20 ℃, then according to I 1 = x power supply to the gas proportional valve, so that the gas proportional valve has a small opening degree and is heated slowly.
The embodiment of the invention collects the temperature T of the water inlet of the water heater 1 Water outlet temperature T of water heater 2 The temperature difference is monitored in real time, so that gradient heating is realized, and overhigh water temperature is avoided while quick heating is achieved.
Optionally, the water heater is provided with a plurality of N target temperature difference thresholds, each target temperature difference threshold is provided with a corresponding regulating current I 2 And the regulating current I of each target temperature difference threshold 1 Decreasing with increasing target temperature differential threshold, the heating process further comprising:
s21, acquiring preset target temperature T in the heating process 3 ；
Wherein the target temperature T is preset 3 Is a temperature preset in the controller;
s22, determining water outlet T of water heater 2 And a preset target temperature T 3 Temperature difference Δ T therebetween 2 ；
Wherein the controller isTime-obtained temperature difference Δ T 2 ；
S23 determination and Delta T 2 A closest target temperature difference threshold value, and the target temperature difference threshold value is less than or greater than delta T 2 Obtaining the adjusting current I corresponding to the target temperature difference threshold value 2 Controlling the water heater according to the current I = I 1 -I 2 Or I = I 1 +I 2 Heating is carried out.
Wherein the target temperature difference threshold is less than Δ T 2 Obtaining the adjusting current I corresponding to the target temperature difference threshold value 2 Controlling the water heater according to the current I = I 1 -I 2 Heating is carried out. Taking the embodiment of the invention as an example, 5 target temperature difference thresholds are set, namely, when the temperature difference thresholds are respectively 2 ℃, 4 ℃, 6 ℃, 8 ℃ and 10 ℃, and the temperature difference threshold is 2 ℃, I 2 =2y; when the temperature difference threshold is 4 ℃, I 2 =1.8y; when the temperature difference threshold is 6 ℃, I 2 =1.6y; when the temperature difference threshold is 8 ℃, I 2 =1.3y; when the temperature difference threshold is 10 ℃, I 2 ＝y。
During heating, at Δ T 1 At 20 ℃ according to I 1 And (= x) supplying power to the gas proportional valve to enable the gas proportional valve to have a small opening degree and stably heat. Along with the water outlet temperature T of the water heater 2 Gradually approaching the preset target temperature T 3 The controller reduces the current quantity of the gas proportional valve, reduces the opening degree of the gas proportional valve, and avoids overhigh water temperature caused by overhigh heating.
The embodiment of the invention compares the water outlet T of the water heater 2 And a preset target temperature T 3 Temperature difference Δ T therebetween 2 Real-time monitoring water outlet T of water heater 2 At T 2 、T 3 When the temperature of the water heater is close to the temperature of the water heater, the heating efficiency of the water heater is reduced, and therefore the situation that the temperature of hot water is too high is avoided.
In particular, the heating process is provided with a plurality of N, and the preset target temperature T in each heating process 3 Different.
Wherein, the man-machine interaction device is an operation panel, is provided with three heating modes of a child, an adult and an old, respectively corresponds to different heating processes, and presets a target temperature T under the child heating mode 3 At 38 ℃ toPreset target temperature T in annual heating mode 3 The temperature is 41 ℃, and the target temperature T is preset under the heating mode of the old people 3 The temperature was 43 ℃.
According to the embodiment of the invention, three heating modes of children, adults and the old are set, so that the proper preset target temperature T can be selected through the man-machine interaction device according to the requirements of users 3 Thereby meeting the requirements of different users.
Particularly, the water heater is provided with a plurality of N temperature setting threshold values, and each temperature setting threshold value is provided with a corresponding intelligent target temperature T 4 And the intelligent target temperature T of each temperature setting threshold value 4 The water heater control method further comprises an intelligent heating process, wherein the intelligent heating process comprises the following steps:
s31 acquisition water heater water inlet temperature T 1 ；
S32 determining and T 1 A closest temperature setting threshold value, and the temperature setting threshold value is less than or greater than T 1 Controlling the water heater to set the intelligent target temperature T corresponding to the threshold value 4 Set to a preset target temperature T 3 Heating is carried out according to the heating process.
Wherein, determining the sum of 1 A closest temperature setting threshold, and the temperature setting threshold is greater than T 1 。
In the embodiment of the invention, the first temperature setting threshold is 20 ℃, and T is applied 4 At 42 deg.C, a second temperature setting threshold of 40 deg.C, for application T 4 The temperature was 40 ℃. At T 1 A preset target temperature T below 20 DEG C 3 It was 42 ℃.
The embodiment of the invention can pass T through the intelligent heating process 1 Determining the ambient temperature, thereby intelligently setting the target temperature T 4 When the external temperature is too low, the target temperature T can be set by setting higher intelligence 4 The heating efficiency is improved, and hot water can be obtained more quickly.
In particular, the water heater control method further comprises a combustion monitoring process:
s41, collecting flame combustion signals in the water heater;
wherein the ignition device is provided with a flame signal detector;
s42, if the flame combustion signal is not acquired, stopping gas supply;
wherein, the controller controls the gas proportional valve to close and stops the gas supply;
and S43, if the flame combustion signal is acquired, heating according to a heating process or an intelligent heating process.
The embodiment of the invention can effectively detect the combustion working condition of the water heater by adopting the combustion monitoring process, avoid gas leakage caused by unsuccessful ignition of the gas and improve the use safety.
In particular, if the flame burning signal is collected, the heating according to the heating process or the intelligent heating process further includes:
s44, collecting a temperature signal, and stopping gas supply if the temperature signal is not collected;
if the water inlet temperature sensor and the water outlet temperature sensor of the water heater have no signal transmission, the temperature cannot be controlled, and the water is overheated to scald a user;
and S45, if the temperature signal is acquired, heating according to a heating process or an intelligent heating process.
The embodiment of the invention can effectively detect the working conditions of the water inlet temperature sensor and the water outlet temperature sensor of the water heater by adopting the temperature signal process, avoids the temperature runaway caused by the failure of the water inlet temperature sensor and the water outlet temperature sensor of the water heater and improves the use safety.
In particular, the water heater control method further comprises an ignition process, wherein the ignition process comprises the following steps:
s51, carrying out pulse discharge;
s52, a proportional valve for supplying fuel gas is opened, so that the fuel gas is ignited under the action of electricity.
Wherein, the ignition device carries out pulse discharge to ignite the gas.
In particular, the water heater control method further comprises a starting process, wherein the starting process comprises the following steps:
and S61, starting a water flow control valve, monitoring water pressure, and starting an ignition process if the water pressure reaches a target pressure.
According to the embodiment of the invention, the starting process is adopted, the water pressure is effectively monitored, and the problems of idle combustion and the like caused by too low water pressure are avoided.
In particular, the start-up procedure further comprises: and S62, if the water pressure does not reach the target pressure, starting a pressurizing device, and increasing the water pressure.
And if the water pressure does not reach the target pressure, the controller starts the water pump to improve the water pressure.
According to the embodiment of the invention, water pressure is increased, water flow is improved, and a user is ensured to have sufficient hot water for use.
Finally, it should be noted that the above-mentioned embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention is described in detail with reference to the above-mentioned embodiments, it should be understood by those skilled in the art that the modifications and equivalents of the specific embodiments of the present invention can be made by those skilled in the art after reading the present specification, but these modifications and variations do not depart from the scope of the claims of the present application.
Claims (7)
1. The control method of the water heater is characterized in that the water heater is provided with a plurality of N temperature difference threshold values, each temperature difference threshold value is provided with corresponding heating current I1, and the heating current I1 of each temperature difference threshold value is increased along with the reduction of the temperature difference threshold value, the control method of the water heater comprises a heating process, and the heating process comprises the following steps:
collecting the water inlet temperature T1 and the water outlet temperature T2 of the water heater;
determining the temperature difference delta T1 between a water inlet T1 of the water heater and a water outlet T2 of the water heater;
determining a temperature difference threshold value closest to the delta T1, wherein the temperature difference threshold value is smaller than or larger than the delta T1, and controlling the water heater to heat according to the heating current I1 corresponding to the temperature difference threshold value;
the water heater is equipped with a plurality of target difference in temperature threshold of N, and each target difference in temperature threshold is equipped with corresponding regulation current I2, and the regulation current I2 of each target difference in temperature threshold reduces along with the increase of target difference in temperature threshold, the heating process still includes:
collecting a preset target temperature T3 in the heating process;
determining a temperature difference delta T2 between a water outlet T2 of the water heater and a preset target temperature T3;
determining a target temperature difference threshold value which is closest to the delta T2, wherein the target temperature difference threshold value is smaller than or larger than the delta T2, obtaining an adjusting current I2 corresponding to the target temperature difference threshold value, and controlling the water heater to heat according to the current I = I1-I2 or I = I1+ I2;
the water heater is provided with a plurality of N temperature setting threshold values, each temperature setting threshold value is provided with a corresponding intelligent target temperature T4, the intelligent target temperature T4 of each temperature setting threshold value is increased along with the increase of the temperature setting threshold value, the water heater control method further comprises an intelligent heating process, and the intelligent heating process comprises the following steps:
collecting the temperature T1 of a water inlet of a water heater;
determining a temperature setting threshold value which is closest to the T1, wherein the temperature setting threshold value is smaller than or larger than the T1, controlling the water heater to set an intelligent target temperature T4 corresponding to the temperature setting threshold value as a preset target temperature T3, and heating according to a heating process;
the water heater control method further comprises a combustion monitoring process:
collecting flame combustion signals in the water heater;
if the flame combustion signal is not acquired, stopping gas supply;
and if the flame combustion signal is acquired, heating according to a heating process or an intelligent heating process.
2. The control method of the water heater according to claim 1, wherein the heating process is provided in a plurality of N, and the preset target temperature T3 in each heating process is different.
3. The control method of the water heater according to claim 1, wherein if the flame burning signal is collected, heating according to a heating process or an intelligent heating process further comprises:
collecting a temperature signal, and stopping gas supply if the temperature signal is not collected;
and if the temperature signal is acquired, heating according to a heating process or an intelligent heating process.
4. The water heater control method according to claim 1, further comprising an ignition process, the ignition process being as follows:
carrying out pulse discharge;
and opening a proportional valve for supplying fuel gas to ensure that the fuel gas is ignited under the action of electricity.
5. The water heater control method according to claim 4, further comprising a start-up procedure, the start-up procedure being as follows:
and (4) starting a water flow control valve, monitoring water pressure, and starting an ignition process if the water pressure reaches a target pressure.
6. The water heater control method of claim 5, wherein the start-up process further comprises: if the water pressure does not reach the target pressure, the supercharging equipment is started, and the water pressure is increased.
7. A water heater applying the control method of the water heater according to any one of claims 1 to 6, wherein the water heater comprises a controller, a human-computer interaction device, a water heater water inlet temperature sensor, a water heater water outlet temperature sensor, a gas proportional valve, a lighting device, a water pump, a water flow control valve and a water pressure detection sensor, and the controller is electrically connected with the human-computer interaction device, the water heater water inlet temperature sensor, the water heater water outlet temperature sensor, the gas proportional valve, the lighting device, the water pump, the water flow control valve and the water pressure detection sensor respectively.
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| CN202011431225.4A CN112556195B (en) | 2020-12-09 | 2020-12-09 | Water heater control method and water heater |
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| CN202011431225.4A CN112556195B (en) | 2020-12-09 | 2020-12-09 | Water heater control method and water heater |
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| CN112556195B true CN112556195B (en) | 2023-04-07 |
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| CN114014483A (en) * | 2021-11-22 | 2022-02-08 | 杭州老板电器股份有限公司 | Water outlet device and water outlet control method thereof |
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| US6539173B2 (en) * | 2001-05-02 | 2003-03-25 | Dynamo Aviation, Inc. | Sensor controlled water heater and method of use |
| CN101303161B (en) * | 2008-06-12 | 2010-07-21 | 中山华帝燃具股份有限公司 | Intelligent gas water heater control method |
| CN102235755B (en) * | 2010-04-23 | 2013-06-26 | 关隆股份有限公司 | Water temperature control method and device for water heater |
| CN102121755B (en) * | 2011-03-01 | 2016-03-09 | 无锡和晶信息技术有限公司 | A kind of method for heating and controlling of constant temp gas water heater |
| CN110260526A (en) * | 2019-07-03 | 2019-09-20 | 珠海格力电器股份有限公司 | A kind of water heater control method, control system, water heater |
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