CN111912122A - Control method of electric water heater and electric water heater - Google Patents
Control method of electric water heater and electric water heater Download PDFInfo
- Publication number
- CN111912122A CN111912122A CN202010803713.7A CN202010803713A CN111912122A CN 111912122 A CN111912122 A CN 111912122A CN 202010803713 A CN202010803713 A CN 202010803713A CN 111912122 A CN111912122 A CN 111912122A
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- water heater
- electric water
- inner container
- electric
- temperature
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 242
- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000010438 heat treatment Methods 0.000 claims abstract description 107
- 238000005485 electric heating Methods 0.000 claims description 25
- 238000001514 detection method Methods 0.000 claims description 3
- 238000003287 bathing Methods 0.000 description 16
- 239000002699 waste material Substances 0.000 description 8
- 238000007792 addition Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/20—Arrangement or mounting of control or safety devices
- F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
- F24H9/2014—Arrangement or mounting of control or safety devices for water heaters using electrical energy supply
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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
- F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
- F24H1/18—Water-storage heaters
- F24H1/20—Water-storage heaters with immersed heating elements, e.g. electric elements or furnace tubes
- F24H1/201—Water-storage heaters with immersed heating elements, e.g. electric elements or furnace tubes using electric energy supply
-
- 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
- F24H9/18—Arrangement or mounting of grates or heating means
- F24H9/1809—Arrangement or mounting of grates or heating means for water heaters
- F24H9/1818—Arrangement or mounting of electric heating means
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- 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)
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
The invention discloses a control method of an electric water heater and the electric water heater, the control method comprises the following steps: s1: selecting a heating mode, wherein the heating mode comprises a half-bladder heating mode and a full-bladder heating mode; s2: detecting whether a water inlet pipeline of the electric water heater is in a water passing state, if so, starting a heating device in the middle of an inner container of the electric water heater, and entering a step S3; if not, controlling the starting/closing of the heating devices at the middle part and the bottom part of the inner container of the electric water heater according to the selected heating mode, the inner container temperature T of the electric water heater, the preset temperature T1 and the preset temperature threshold value, and circulating the steps S1 to S2; s3: and when the temperature T of the inner container of the electric water heater is greater than or equal to the preset temperature value T1 or the water inlet pipeline is in a water cut-off state, stopping the heating device in the middle of the inner container of the electric water heater and returning to the step S2.
Description
Technical Field
The invention relates to the technical field of electric water heaters, in particular to a control method of an electric water heater and the electric water heater.
Background
The electric water heater in the market at present mainly uses a water storage type electric water heater, namely, an inner container with a large volume is arranged in the electric water heater and used for storing hot water. When the electric water heater is used, the required water temperature is set firstly, then the electric heating tube is started to heat, and when the water temperature reaches the preset water temperature, the temperature control device of the electric water heater controls the power supply of the electric heating tube to be cut off, so that the heating is stopped. According to the hot water layering principle, the electric heating pipe needs to be arranged at the bottom of the inner container for heating, after heating is completed, the whole inner container of the electric water heater is hot water, if the number of people for bathing is small or the bathing water is less, waste of excessive hot water can be caused, and the energy waste condition is caused.
In addition, according to the heating principle of the electric water heater, when the water temperature is heated to the preset water temperature, the water heater enters a heat preservation state, and when the water temperature is reduced to a certain temperature, the temperature control device of the electric water heater is restarted for heating, and the operation is repeated according to the cycle. Because the temperature control device of the electric water heater is mostly arranged in the middle of the liner, and because the hot water is layered (the upper water temperature is higher and the lower water temperature is lower), when the continuous water use condition is met, especially the cold water inlet temperature is lower, after the temperature is reduced by a certain value sensed by the temperature control device, the heating time is seriously lagged, and a great deal of cold water enters the bottom of the liner, so that the continuous output hot water quantity of the electric water heater is less, and the bath comfort degree is seriously influenced. In addition, considering that the electric heating tube is positioned at the bottom of the inner container to heat the water in the inner container, the temperature rise in unit time is small due to large water amount, and the condition that a large hot water increment is needed in the continuous bathing process cannot be met.
Disclosure of Invention
The invention aims to solve at least one of the problems in the prior related art to a certain extent, and therefore, the invention provides a control method of an electric water heater and the electric water heater, which can solve the problem of waste of residual heat water after bathing caused by a small number of people in bathing or less bathing water and the problem of insufficient hot water during continuous bathing water.
A control method of an electric water heater comprises the following steps:
s1: selecting a heating mode, wherein the heating mode comprises a half-bladder heating mode and a full-bladder heating mode;
s2: detecting whether a water inlet pipeline of the electric water heater is in a water passing state, if so, starting a heating device in the middle of an inner container of the electric water heater, and entering a step S3; if not, controlling the starting/closing of the heating devices at the middle part and the bottom part of the inner container of the electric water heater according to the selected heating mode, the inner container temperature T of the electric water heater, the preset temperature T1 and the preset temperature threshold value, and circulating the steps S1 to S2;
s3: and when the temperature T of the inner container of the electric water heater is greater than or equal to the preset temperature value T1 or the water inlet pipeline is in a water cut-off state, stopping the heating device in the middle of the inner container of the electric water heater and returning to the step S2.
Further, the preset temperature thresholds include a first temperature threshold Δ Ts1 and a second temperature threshold Δ Ts2, the first temperature threshold Δ Ts1 being greater than the second temperature threshold Δ Ts 2.
Further, in the half-liner heating mode, if the water inlet pipeline of the electric water heater is detected to be in a water-cut-off state, the liner temperature T of the electric water heater is detected;
when the temperature T of the inner container of the electric water heater is less than or equal to a preset temperature value T1-a second temperature threshold value delta Ts2, starting a middle heating device of the inner container of the electric water heater;
when the temperature T of the inner container of the electric water heater is greater than or equal to the preset temperature value T1, the middle heating device of the inner container of the electric water heater is stopped.
Further, in the heating mode of the whole liner, if the water inlet pipeline of the electric water heater is detected to be in a water cut-off state, the temperature T of the liner of the electric water heater is detected;
when the temperature T of the inner container of the electric water heater is less than a preset temperature value T1-a first temperature threshold value delta Ts1, starting a middle heating device of the inner container of the electric water heater;
when the temperature T of the inner container of the electric water heater is equal to a preset temperature value T1-a first temperature threshold value delta Ts1, stopping a middle heating device of the inner container of the electric water heater, and starting a bottom heating device of the inner container of the electric water heater;
when the temperature T of the inner container of the electric water heater is greater than or equal to a preset temperature value T1, stopping a bottom heating device of the inner container of the electric water heater;
when the temperature T of the liner of the electric water heater is less than or equal to the preset temperature value T1-the second temperature threshold delta Ts2, the bottom heating device of the liner of the electric water heater is started again.
Furthermore, the water on-off state of the water inlet pipeline of the electric water heater is determined according to the detection of the water flow sensor.
Further, the temperature T of the inner container of the electric water heater is the middle temperature of the inner container of the electric water heater.
Furthermore, the power of the heating device in the middle of the inner container of the electric water heater is greater than or equal to the power of the heating device at the bottom of the inner container of the electric water heater.
An electric water heater comprising: the casing with set up inner bag in the casing still includes:
the first electric heating tube is arranged at the bottom of the inner container;
the second electric heating tube is arranged in the middle of the inner container;
the temperature sensor is arranged in the middle of the inner container;
a water flow sensor disposed on the water inlet line of the housing;
a half-bladder/whole-bladder heating mode change-over switch;
and the electric control component is arranged in the shell, is respectively and electrically connected with the first electric heating pipe, the second electric heating pipe, the temperature sensor, the water flow sensor and the half-liner/whole-liner heating mode change-over switch, and is controlled by adopting the control method of the electric water heater.
Compared with the prior art, the invention at least comprises the following beneficial effects:
according to the invention, a user can freely switch between the half-liner heating mode and the whole-liner heating mode according to requirements, the water quantity is reduced by half because the half-liner heating mode only heats water in the upper half part of the liner, and the heating waiting time can be reduced by half under the condition of unchanged rated power; meanwhile, the total amount of hot water is reduced by half, the water heater is suitable for the water demand of one person for bathing or the bathing time is short, so that the energy waste caused by waste of the waste hot water can be avoided, whether a bathing signal appears is judged by detecting the water flow of a water inlet pipeline of the electric water heater, if the bathing signal appears, the middle heating device of the inner container of the electric water heater is started immediately, the problem of delay of the heating starting time can be solved, the heating speed can be increased (only half of the inner container of water is heated, and the temperature rise speed of heating in unit time is doubled), and the total amount of hot water is greatly increased when the water is continuously used.
Drawings
Fig. 1 is a flow chart of a control method of an electric water heater according to the present invention.
Fig. 2 is a schematic structural diagram of an electric water heater according to the present invention.
Detailed Description
In order to make the technical solutions of the present invention better understood, 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 obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, shall fall within the scope of the claims of the present invention.
As shown in fig. 1-2, a control method of an electric water heater, the electric water heater comprising: casing 1 and setting are in the inner bag 2 in casing 1 still includes: the heating device comprises a bottom heating device arranged at the bottom of the inner container 2, a middle heating device and a temperature sensor 5 arranged in the middle of the inner container 2, a water flow sensor 6 arranged on a water inlet pipeline of the shell 1, a half-container/whole-container heating mode change-over switch and an electric control component 7 arranged in the shell 1, wherein the bottom heating device can be a first electric heating pipe 3, the middle heating device can be a second electric heating pipe 4, and the electric control component 7 is electrically connected with the bottom heating device, the middle heating device, the temperature sensor 5, the water flow sensor 6 and the half-container/whole-container heating mode change-over switch respectively.
The control method of the electric water heater comprises the following steps:
s1: selecting a heating mode, wherein the heating mode comprises a half-bladder heating mode and a full-bladder heating mode;
s2: detecting whether a water inlet pipeline of the electric water heater is in a water passing state, if so, starting a heating device in the middle of an inner container of the electric water heater, and entering a step S3; if not, controlling the starting/closing of the heating devices at the middle part and the bottom part of the inner container of the electric water heater according to the selected heating mode, the inner container temperature T of the electric water heater, the preset temperature T1 and the preset temperature threshold value, and circulating the steps S1 to S2;
s3: and when the temperature T of the inner container of the electric water heater is greater than or equal to the preset temperature value T1 or the water inlet pipeline is in a water cut-off state, stopping the heating device in the middle of the inner container of the electric water heater and returning to the step S2.
The preset temperature threshold comprises a first temperature threshold delta Ts1 and a second temperature threshold delta Ts2, the first temperature threshold delta Ts1 is greater than the second temperature threshold delta Ts2, the first temperature threshold delta Ts1 and the second temperature threshold delta Ts2 are preset values of a system, and the preferable range of the first temperature threshold delta Ts1 is as follows: 10 ℃ to 20 ℃, more preferably 10 ℃; the second temperature threshold Δ Ts2 preferably ranges from: 5 ℃ to 8 ℃; the preset temperature value T1 preferably ranges from: 30 ℃ to 80 ℃.
In the half-liner heating mode, if the water inlet pipeline of the electric water heater is detected to be in a water-cut-off state, the temperature T of the liner of the electric water heater is detected;
when the temperature T of the inner container of the electric water heater is less than or equal to a preset temperature value T1-a second temperature threshold value delta Ts2, starting a middle heating device of the inner container of the electric water heater;
when the temperature T of the inner container of the electric water heater is greater than or equal to the preset temperature value T1, the middle heating device of the inner container of the electric water heater is stopped.
In the heating mode of the whole liner, if the water inlet pipeline of the electric water heater is detected to be in a water-cut-off state, the temperature T of the liner of the electric water heater is detected;
when the temperature T of the inner container of the electric water heater is less than a preset temperature value T1-a first temperature threshold value delta Ts1, starting a middle heating device of the inner container of the electric water heater;
when the temperature T of the inner container of the electric water heater is equal to a preset temperature value T1-a first temperature threshold value delta Ts1, stopping a middle heating device of the inner container of the electric water heater, and starting a bottom heating device of the inner container of the electric water heater;
when the temperature T of the inner container of the electric water heater is greater than or equal to a preset temperature value T1, stopping a bottom heating device of the inner container of the electric water heater;
when the temperature T of the liner of the electric water heater is less than or equal to the preset temperature value T1-the second temperature threshold delta Ts2, the bottom heating device of the liner of the electric water heater is started again.
When the water heater is used, a heating mode is selected by a user through a half-liner/whole-liner heating mode change-over switch, the water quantity is reduced by half due to the fact that the half-liner heating mode only heats water in the upper half part of the liner, and the heating waiting time can be reduced by half under the condition that the rated power is not changed; meanwhile, the total amount of hot water is reduced by half, so that the water supply device is suitable for water demand of one person for bathing or short bathing time, and energy waste caused by waste of waste heat water can be avoided. Then the water flow sensor 6 detects the water on-off state of the water inlet pipeline of the electric water heater, so as to judge whether a bathing signal appears, the principle is that when the water flow signal appears in the water inlet pipeline of the electric water heater, the bathing signal appears, at the moment, the second electric heating tube 4 is started for heating immediately, the problem of delay of the heating starting time can be solved, the heating speed can be increased, only half-bladder water is heated, the temperature rising speed of heating in unit time is doubled, and therefore the total amount of hot water is greatly increased when water is continuously used.
The water on-off state of the water inlet pipeline of the electric water heater is determined according to the detection of the water flow sensor 6, and when the water flow sensor 6 detects a water flow signal, the water inlet pipeline is judged to be in a water passing state; when the water flow sensor 6 detects a water-free flow signal, the water inlet pipeline is judged to be in a water cut-off state.
The inner container temperature T of the electric water heater is the middle temperature of the inner container of the electric water heater, and because the hot water in the inner container 2 can be layered, the upper part of the water is hotter, and the lower part of the water is colder, the middle temperature of the inner container 2 is more average, and the accuracy is higher.
The power of the heating device in the middle of the inner container of the electric water heater is larger than or equal to that of the heating device at the bottom of the inner container of the electric water heater, and the heating device in the middle is used for heating when bathing, so that the heating power of the heating device in the middle is larger than or equal to that of the heating device at the bottom of the inner container of the electric water heater.
An electric water heater comprising: casing 1 and setting are in the inner bag 2 in casing 1 still includes:
the first electric heating tube 3 is arranged at the bottom of the inner container 2;
the second electric heating tube 4 is arranged in the middle of the inner container 2;
the temperature sensor 5 is arranged in the middle of the inner container 2;
a water flow sensor 6 disposed on a water inlet line of the housing 1;
the half-liner/whole-liner heating mode change-over switch can be arranged on the shell 1 or a remote controller;
and the electric control component 7 is arranged in the shell 1, the electric control component 7 is respectively and electrically connected with the first electric heating pipe 3, the second electric heating pipe 4, the temperature sensor 5, the water flow sensor 6 and the half-liner/whole-liner heating mode change-over switch, and the electric control component 7 is controlled by adopting the control method of the electric water heater.
The electric connection ends of the first electric heating tube 3 and the second electric heating tube 4 can be integrally arranged in the middle of the liner 2, the first electric heating tube 3 is of a submergence type and is bent downwards from the middle of the liner 2 to extend to the bottom of the liner 2, and the second electric heating tube 4 is large in power, so that the first electric heating tube 3 is spirally surrounded, the electric connection space is saved, and the length of the second electric heating tube 4 can be longer in a spiral mode.
The above-mentioned embodiments are intended to illustrate the technical solutions and advantages of the present invention, and it should be understood that the above-mentioned embodiments are only the most preferred embodiments of the present invention, and are not intended to limit the present invention, and any modifications, additions, equivalents, etc. made within the scope of the principles of the present invention should be included in the scope of the present invention.
Claims (8)
1. A control method of an electric water heater is characterized by comprising the following steps:
s1: selecting a heating mode, wherein the heating mode comprises a half-bladder heating mode and a full-bladder heating mode;
s2: detecting whether a water inlet pipeline of the electric water heater is in a water passing state, if so, starting a heating device in the middle of an inner container of the electric water heater, and entering a step S3; if not, controlling the starting/closing of the heating devices at the middle part and the bottom part of the inner container of the electric water heater according to the selected heating mode, the inner container temperature T of the electric water heater, the preset temperature T1 and the preset temperature threshold value, and circulating the steps S1 to S2;
s3: and when the temperature T of the inner container of the electric water heater is greater than or equal to the preset temperature value T1 or the water inlet pipeline is in a water cut-off state, stopping the heating device in the middle of the inner container of the electric water heater and returning to the step S2.
2. The control method of an electric water heater according to claim 1, characterized in that the preset temperature thresholds include a first temperature threshold Δ Ts1 and a second temperature threshold Δ Ts2, the first temperature threshold Δ Ts1 being greater than the second temperature threshold Δ Ts 2.
3. The control method of the electric water heater according to claim 2, characterized in that in the half-bladder heating mode, if the water inlet pipeline of the electric water heater is detected to be in a water-cut-off state, the temperature T of the bladder of the electric water heater is detected;
when the temperature T of the inner container of the electric water heater is less than or equal to a preset temperature value T1-a second temperature threshold value delta Ts2, starting a middle heating device of the inner container of the electric water heater;
when the temperature T of the inner container of the electric water heater is greater than or equal to the preset temperature value T1, the middle heating device of the inner container of the electric water heater is stopped.
4. The control method of the electric water heater according to claim 2, characterized in that in the heating mode of the liner, if the water inlet pipeline of the electric water heater is detected to be in a water-cut state, the temperature T of the liner of the electric water heater is detected;
when the temperature T of the inner container of the electric water heater is less than a preset temperature value T1-a first temperature threshold value delta Ts1, starting a middle heating device of the inner container of the electric water heater;
when the temperature T of the inner container of the electric water heater is equal to a preset temperature value T1-a first temperature threshold value delta Ts1, stopping a middle heating device of the inner container of the electric water heater, and starting a bottom heating device of the inner container of the electric water heater;
when the temperature T of the inner container of the electric water heater is greater than or equal to a preset temperature value T1, stopping a bottom heating device of the inner container of the electric water heater;
when the temperature T of the liner of the electric water heater is less than or equal to the preset temperature value T1-the second temperature threshold delta Ts2, the bottom heating device of the liner of the electric water heater is started again.
5. The control method of the electric water heater according to any one of claims 1 to 4, wherein the water on/off state of the water inlet pipeline of the electric water heater is determined according to the detection of a water flow sensor.
6. The control method of the electric water heater according to any one of claims 1 to 4, wherein the temperature T of the liner of the electric water heater is the middle temperature of the liner of the electric water heater.
7. The control method of the electric water heater according to any one of claims 1 to 4, wherein the power of the heating device in the middle of the inner container of the electric water heater is greater than or equal to the power of the heating device at the bottom of the inner container of the electric water heater.
8. An electric water heater comprising: casing (1) and setting are in inner bag (2) in casing (1), its characterized in that still includes:
the first electric heating tube (3) is arranged at the bottom of the inner container (2);
the second electric heating tube (4) is arranged in the middle of the inner container (2);
the temperature sensor (5) is arranged in the middle of the inner container (2);
a water flow sensor (6) disposed on a water inlet line of the housing (1);
a half-bladder/whole-bladder heating mode change-over switch;
an electric control component (7) disposed in the housing (1), wherein the electric control component (7) is electrically connected to the first electric heating tube (3), the second electric heating tube (4), the temperature sensor (5), the water flow sensor (6) and the half-bladder/whole-bladder heating mode change-over switch, respectively, and the electric control component (7) is controlled by the control method of the electric water heater according to any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010803713.7A CN111912122A (en) | 2020-08-11 | 2020-08-11 | Control method of electric water heater and electric water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010803713.7A CN111912122A (en) | 2020-08-11 | 2020-08-11 | Control method of electric water heater and electric water heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111912122A true CN111912122A (en) | 2020-11-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010803713.7A Pending CN111912122A (en) | 2020-08-11 | 2020-08-11 | Control method of electric water heater and electric water heater |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112984821A (en) * | 2021-03-04 | 2021-06-18 | 艾欧史密斯(中国)热水器有限公司 | Control method of heating device |
| TWI767557B (en) * | 2021-02-08 | 2022-06-11 | 阿斯嘉能源科技有限公司 | Intelligent electric heating device |
-
2020
- 2020-08-11 CN CN202010803713.7A patent/CN111912122A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI767557B (en) * | 2021-02-08 | 2022-06-11 | 阿斯嘉能源科技有限公司 | Intelligent electric heating device |
| CN112984821A (en) * | 2021-03-04 | 2021-06-18 | 艾欧史密斯(中国)热水器有限公司 | Control method of heating device |
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