CN107687705B - Water heater and control method thereof - Google Patents
Water heater and control method thereof Download PDFInfo
- Publication number
- CN107687705B CN107687705B CN201610634707.7A CN201610634707A CN107687705B CN 107687705 B CN107687705 B CN 107687705B CN 201610634707 A CN201610634707 A CN 201610634707A CN 107687705 B CN107687705 B CN 107687705B
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- Prior art keywords
- water
- air bag
- water tank
- temperature
- controller
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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
- 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
- F24H1/202—Water-storage heaters with immersed heating elements, e.g. electric elements or furnace tubes using electric energy supply with resistances
-
- 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
- F24H9/2021—Storage heaters
Abstract
The invention relates to the related technical field of water heaters, and particularly discloses a water heater and a control method thereof, wherein the water heater comprises a water tank arranged in a shell, a water inlet pipe and a water outlet pipe, one end of which extends into the water tank, and a heater arranged in the water tank and connected to a controller, wherein an air bag and a temperature sensor connected to the controller are arranged in the water tank, the open end of the air bag extends out of the water tank and is connected with a driving device for expanding the air bag, and the driving device is connected to the controller. According to the invention, the actual capacity of the water tank is adjusted by arranging the air booster pump and the air bag, the water inflow of the water inlet pipe is reduced under the condition that the water outflow of the water outlet pipe is not changed, so that the falling speed of the water temperature in the water tank is slowed down, the time of hot water supplied by the water heater and meeting the bathing temperature requirement of a user is prolonged, and the water outflow rate of the hot water is improved, so that the requirements of the user on the water consumption and the water temperature are realized.
Description
Technical Field
The invention relates to the technical field of water heaters, in particular to a water heater and a control method thereof.
Background
Most of existing water heaters are water storage pressure-bearing water tanks, cold water continuously flows in along with outflow of hot water during use, but the temperature of water in the water tank can be reduced after the inflow cold water is mixed with residual hot water in the water tank, and at the moment, the water is repeatedly heated by heating devices such as electric heating devices, gas heating devices or heat pumps. However, since the heat generated by the electric heater, the gas or the heat pump in a unit time is constant, in order to maintain the pressure in the water tank 2 to be stable, the water inlet speed is equal to the water outlet speed, and the water temperature in the water tank can continuously decrease along with the continuous outflow of the hot water and the continuous inflow of the cold water, so that the water temperature can rapidly decrease to the bathing temperature of the user, and at this time, if the water is continuously used, the water temperature cannot meet the user requirement, namely, the hot water amount is insufficient.
Disclosure of Invention
The invention aims to provide a water heater and a control method thereof, which aim to solve the problem that the use of a user is influenced because the hot water quantity is insufficient along with the use of hot water in the conventional water heater.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a water heater, locates the water tank in the casing, one end stretches into inlet tube and outlet pipe in the water tank to and locate in the water tank and connect in the heater of controller, be equipped with the gasbag in the water tank and connect in the temperature sensor of controller, the open end of gasbag stretches out the water tank and is connected with the drive arrangement who makes its inflation, drive arrangement connects in the controller.
Further, the air bag is made of ethylene propylene diene monomer or silica gel material.
Furthermore, the air bag is arranged between the water inlet pipe and the water outlet pipe.
Furthermore, the air bag is arranged on one side of the water inlet pipe, which is far away from the water outlet pipe.
Further, the driving device is an air booster pump.
The invention also provides a water heater control method, which comprises the following steps:
the temperature sensor detects the water temperature in the water tank and sends a detection signal to the controller;
the controller receives the detection signal and controls the working state of the air bag according to the water temperature change condition in the water tank.
Further, the controller receives the detection signal and controls the working state of the air bag according to the water temperature change condition in the water tank, and the control method comprises the following steps:
if the temperature value of the water temperature in the water tank in unit time is lower than the preset value, the air booster pump does not work and the air bag maintains the initial state;
if the temperature value of the water temperature in the water tank in unit time is larger than or equal to the preset value, the controller controls the air booster pump to drive the air bag to work so that the pressure in the air bag reaches the maximum value, and the pressure in the air bag is kept unchanged by the air booster pump.
Further, if the temperature value of the water temperature in the water tank in the unit time is greater than or equal to the preset value, the controller controls the air booster pump to drive the air bag to work so as to enable the pressure in the air bag to reach the maximum, and the method further comprises the following steps of:
if the water yield of the water outlet pipe is not changed, the controller controls the air booster pump to work to enable the air bag to maintain the current state;
if the water yield of the water outlet pipe is zero or reduced and the water temperature in the water tank begins to rise, the controller controls the air booster pump to stop working, and the air bag recovers to the initial state.
Further, the maximum value of the pressure in the airbag is 0.6 MPa.
The invention has the beneficial effects that: the actual capacity of the water tank is adjusted by arranging the air booster pump and the air bag, the water inflow of the water inlet pipe is reduced under the condition that the water outflow of the water outlet pipe is not changed, and then the falling speed of the water temperature in the water tank is reduced, so that the time of hot water supplied by the water heater and meeting the bathing temperature requirement of a user is prolonged, the hot water outflow rate is improved, and the requirements of the user on the water consumption and the water temperature are met.
Drawings
Fig. 1 is a schematic structural diagram of a water heater according to embodiment 1 of the present invention;
fig. 2 is a flowchart of a water heater control method according to embodiment 2 of the present invention.
In the figure:
1. a housing; 2. a water tank; 3. an air booster pump; 4. an air bag; 5. a water inlet pipe; 6. a water outlet pipe; 7. a heater.
Detailed Description
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.
Example 1
As shown in fig. 1, the present embodiment provides a water heater, which includes a housing 1, a water tank 2, a heater 7, a driving device, an airbag 4, a temperature sensor, and a controller, wherein the heater 7, the driving device, and the temperature sensor (not shown) are electrically connected to the controller (not shown). Wherein the content of the first and second substances,
in this embodiment, the water tank 2 is arranged in the casing 1, the bottom of the water tank 2 is provided with a water inlet and a water outlet, the water inlet and the water outlet are respectively arranged at two sides of the bottom of the water tank 2, the water inlet is provided with one end which extends into the water tank 2 and the other end which is connected with the water inlet pipe 5 of the water supply system, and the water outlet is provided with one end which extends into the water tank 2 and the other end which is connected with the water outlet pipe 6 of the. In a household water heater, hot water supplied to a water supply system is generally used for showering, washing, and the like, and therefore, a water supply system is generally provided with a faucet for controlling water discharge of the water heater, and the water discharge amount of the water outlet pipe 6 is controlled by the opening degree of the faucet.
The water inlet pipe 5 and the water outlet pipe 6 can extend from the same side of the water tank 2 or from two sides of the water tank 2. In this embodiment, the one end of outlet pipe 6 is followed the bottom of water tank 2 stretches into and extends to the headspace of water tank 2, the one end of inlet tube 5 is followed the bottom of water tank 2 stretches into and its length that stretches into in the water tank 2 is less than the length that outlet pipe 6 stretches into in the water tank 2, is convenient for slow down and causes the rivers of water tank 2 to fluctuate by a wide margin and influence hydrothermal water yield from the cold water that inlet tube 5 got into in the water tank 2, has played the effect of practicing thrift the electric energy. The water outlet rate of the hot water refers to the volume of the hot water discharged when the electric water heater is heated to the rated maximum temperature and then discharges the hot water in the electric water heater until the temperature of the inner container is 20 ℃ lower than the maximum rated temperature, and the ratio of the volume of the hot water discharged to the rated volume of the electric water heater is the water outlet rate of the electric water heater. In this embodiment, the positions of the water outlet pipe 6 and the water inlet pipe 5 and the corresponding lengths extending into the water tank 2 can also adopt other structures, and the normal operation of the water heater is not affected.
In this embodiment, one end of the heater 7 is fixedly disposed on the inner wall of the end of the water tank 2 close to the water outlet pipe 6, and the other end is disposed at the end close to the end of the water outlet pipe 6 extending into the water tank 2. In use, the heater 7 will heat the water near the end of the outlet pipe 6 extending into the water tank 2, and then the water far from the end is gradually heated by heat transfer, so as to make the temperature of the hot water flowing out of the outlet pipe 6 meet the user's requirement.
In this embodiment, be equipped with gasbag 4 in the water tank 2 and connect in the temperature sensor of controller, through the temperature sensor real-time detection water tank 2's temperature to with detected signal transmission to reacing the current temperature in the water tank 2 to the controller. The open end of the bladder 4 extends out of the water tank 2 and is connected to a drive means for inflating it, the drive means being connected to a controller. Specifically, in the present embodiment, the driving device is an air booster pump 3, and the air booster pump 3 is a micro air booster pump, that is, the pressure provided by the air booster pump 3 has a pressure range, and the volume of the air bag 4 is smaller than the volume of the water tank 2 in the pressure range.
In this embodiment, since the air bag 4 is disposed in the water tank 2, the air bag 4 needs to have heat resistance, and in this embodiment, the air bag 4 is made of epdm or silica gel having strong overheating resistance and water vapor resistance.
As a preferable technical solution, in this embodiment, the air bag 4 is disposed between the water inlet pipe 5 and the water outlet pipe 6 or on a side of the water inlet pipe 5 away from the water outlet pipe 6. Although the air bag 4 is made of epdm or silicone rubber having overheating resistance and steam resistance, in order to prolong the service life of the air bag 4, it is preferable in this embodiment that the air bag 4 is disposed on the side of the water inlet pipe 5 away from the water outlet pipe 6.
Example 2
The embodiment provides a control method of a water heater in embodiment 1, as shown in fig. 2, including the following steps:
s110, the temperature sensor detects the water temperature in the water tank and sends a detection signal to the controller.
Specifically, when a user opens a faucet for controlling water outlet of the water heater, hot water in the water tank 2 flows out through the water outlet pipe 6, meanwhile, cold water enters the water tank 2 through the water inlet pipe 5, the heater 7 starts to work, and the temperature sensor detects the water temperature in the water tank 2 and sends a detection signal to the controller.
And S120, the controller receives the detection signal and controls the working state of the air bag according to the water temperature change condition in the water tank.
Wherein the controller receives the detection signal and controls the working state of the air bag 4 according to the change of the water temperature in the water tank 2, including the following two conditions.
In the first situation, if the temperature of the water in the water tank 2 decreases by a value less than a predetermined value per unit time, the air booster pump 3 does not operate and the air bladder 4 maintains the initial state.
In the second situation, if the temperature of the water in the water tank 2 is lower than the preset value, the controller controls the air booster pump 3 to drive the air bag 4 to work, so that the pressure in the air bag 4 is maximized, and the air booster pump 3 maintains the pressure in the air bag 4.
Specifically, with the continuous outflow of hot water and the continuous inflow of cold water, the temperature of the water in the water tank 2 drops, when the drop temperature value of the temperature of the water in the water tank 2 is greater than a preset value, the controller controls the air booster pump 3 to drive the air bag 4 to work, namely, the air booster pump 3 inflates the air bag 4 to gradually increase the pressure in the air bag 4, then the air bag 4 begins to expand to increase the volume occupied by the air bag 4, the volume used for containing water in the water tank 2 is reduced, the water outlet quantity of the hot water is controlled by the opening degree of a water tap of the water supply system, under the condition that the opening degree of the water tap is unchanged, the entering quantity of the cold water is reduced, the drop temperature value of the water temperature in unit time is reduced, the time for supplying the hot water meeting the temperature requirement of a user by the water heater is prolonged, and. When the pressure in the air bag 4 reaches the maximum, the pressure in the air bag 4 is maintained by the air booster pump 3. Wherein the air booster pump 3 can output different air pressures through compressed air, and the size of the output air pressure can be adjusted.
On the premise that the water yield of the water outlet pipe 6 is not changed, the controller controls the air booster pump 3 to work to enable the air bag 4 to maintain the current state, and the temperature of the water in the water tank 2 will continue to drop along with the continuous outflow of hot water and the continuous inflow of cold water.
When the water yield of the water outlet pipe 6 is zero or the water yield is reduced and the water temperature in the water tank 2 begins to rise, the controller controls the air booster pump 3 to stop working, the air in the air bag 4 is gradually discharged under the action of the water pressure in the water tank 2, the volume of the air bag 4 is gradually reduced, and meanwhile, water is continuously injected into the water tank 2 through the water inlet pipe 5 until the air bag 4 returns to the initial state.
In this embodiment, the maximum value of the pressure in the airbag 4 is 0.6 MPa. That is, the volume of the air bag 4 is increased by the air booster pump 3, and the air booster pump 3 can only make the pressure in the air bag 4 reach 0.6MPa at maximum, and thereafter the air booster pump 3 can maintain the pressure in the air bag 4 at the current value, and the volume of the air bag 4 does not change any more.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (7)
1. A water heater comprises a water tank (2) arranged in a shell (1), a water inlet pipe (5) and a water outlet pipe (6) with one ends extending into the water tank (2), and a heater (7) arranged in the water tank (2) and connected to a controller, and is characterized in that an air bag (4) and a temperature sensor connected to the controller are arranged in the water tank (2), the open end of the air bag (4) extends out of the water tank (2) and is connected with a driving device for expanding the air bag, and the driving device is connected to the controller; the driving device is an air booster pump (3), the temperature sensor is used for measuring the water temperature in the water tank (2), and the controller can control the working state of the air bag (4) according to the change condition of the water temperature in the water tank (2).
2. The water heater according to claim 1, characterized in that the bladder (4) is made of ethylene propylene diene monomer or silicone material.
3. A water heater according to claim 1, wherein the air bag (4) is arranged between the inlet pipe (5) and the outlet pipe (6).
4. A water heater according to claim 1, wherein the air bag (4) is provided on the side of the inlet pipe (5) remote from the outlet pipe (6).
5. A control method of a water heater is characterized by comprising the following steps:
the temperature sensor detects the water temperature in the water tank and sends a detection signal to the controller;
the controller receives the detection signal and controls the working state of the air bag according to the change condition of the water temperature in the water tank;
the controller receives the detection signal and controls the working state of the air bag according to the water temperature change condition in the water tank, and the working state comprises the following steps:
if the temperature value of the water temperature in the water tank in unit time is lower than the preset value, the air booster pump does not work and the air bag maintains the initial state;
if the temperature value of the water temperature in the water tank in unit time is larger than or equal to the preset value, the controller controls the air booster pump to drive the air bag to work so that the pressure in the air bag reaches the maximum value, and the pressure in the air bag is kept unchanged by the air booster pump.
6. The control method of the water heater according to claim 5, wherein if the temperature value of the water temperature in the water tank per unit time is greater than or equal to a preset value, the controller controls the air booster pump to drive the air bag to work so that the pressure in the air bag reaches a maximum value, and after the air booster pump maintains the pressure in the air bag constant, the method further comprises:
if the water yield of the water outlet pipe is not changed, the controller controls the air booster pump to work to enable the air bag to maintain the current state;
if the water yield of the water outlet pipe is zero or reduced and the water temperature in the water tank begins to rise, the controller controls the air booster pump to stop working, and the air bag recovers to the initial state.
7. The water heater control method according to claim 6, wherein a maximum value of the pressure inside the air bag is 0.6 MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610634707.7A CN107687705B (en) | 2016-08-04 | 2016-08-04 | Water heater and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610634707.7A CN107687705B (en) | 2016-08-04 | 2016-08-04 | Water heater and control method thereof |
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| CN107687705A CN107687705A (en) | 2018-02-13 |
| CN107687705B true CN107687705B (en) | 2020-05-26 |
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| CN201610634707.7A Active CN107687705B (en) | 2016-08-04 | 2016-08-04 | Water heater and control method thereof |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109431348A (en) * | 2018-11-30 | 2019-03-08 | 厦门市锦坤工贸有限公司 | Outdoor shower device |
| CN112268372A (en) * | 2020-10-23 | 2021-01-26 | 珠海格力电器股份有限公司 | Pressurization control method of water heater and water heater |
| CN112629040B (en) * | 2021-01-12 | 2022-01-21 | 宁波方太厨具有限公司 | Constant temperature water storage tank and contain its water heater |
| CN112902438A (en) * | 2021-03-11 | 2021-06-04 | 付广群 | Air pressure-supplementing water mixing device and electric water heater |
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| CN202195617U (en) * | 2011-08-23 | 2012-04-18 | 山东轻工业学院 | Water-saving device of solar water heater |
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|---|---|---|---|---|
| CN2390143Y (en) * | 1998-08-22 | 2000-08-02 | 深圳市火王燃器具公司 | Ultra-low pressure safety enclosed electric water heater |
| AT410131B (en) * | 1999-06-18 | 2003-02-25 | Vaillant Gmbh | HEIZWASSERBEREITER |
| DE20211569U1 (en) * | 2002-07-15 | 2002-09-12 | Kastorff Manfred | Closed heat cycle |
| CN2577188Y (en) * | 2002-10-13 | 2003-10-01 | 冯金平 | Navel-storage type electric water-heater |
| CN201242304Y (en) * | 2008-06-24 | 2009-05-20 | 欧阳宝武 | Medium-addition-free type gasbag respirator for low-voltage heat exchange system |
| KR20120089171A (en) * | 2011-02-01 | 2012-08-09 | 최진민 | Boiler having nitrogen tank an heat exchanger in one body type |
| CN203413826U (en) * | 2013-06-28 | 2014-01-29 | 杨斐然 | Hot water storage tank with buoyancy bin-divided volume-variation mixing-prevention thermal-insulation device |
| ES1098105Y (en) * | 2013-12-18 | 2014-04-15 | Sanchez Antonio Joaquin Asencio | PRESSURE FLUID ACCUMULATION DEPOSIT |
| KR101805244B1 (en) * | 2014-07-07 | 2018-01-10 | 최영환 | Heating mats boiler blocking atmosphere |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202195617U (en) * | 2011-08-23 | 2012-04-18 | 山东轻工业学院 | Water-saving device of solar water heater |
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Effective date of registration: 20201109 Address after: 266431, Shandong, Qingdao province Jiaonan hidden Town Street office Cloud Road No. 67 Patentee after: QINGDAO HAIER NEW ENERGY ELECTRIC APPLIANCE Co.,Ltd. Patentee after: Haier Zhijia Co.,Ltd. Address before: 266431, Shandong, Qingdao province Jiaonan hidden Town Street office Cloud Road No. 67 Patentee before: QINGDAO HAIER NEW ENERGY ELECTRIC APPLIANCE Co.,Ltd. |
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