CN106969495A - Intelligent constant-temperature water-saving water heater and control method - Google Patents
Intelligent constant-temperature water-saving water heater and control method Download PDFInfo
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- CN106969495A CN106969495A CN201710129218.0A CN201710129218A CN106969495A CN 106969495 A CN106969495 A CN 106969495A CN 201710129218 A CN201710129218 A CN 201710129218A CN 106969495 A CN106969495 A CN 106969495A
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- water
- temperature
- temperature sensor
- electric heater
- pipeline
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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
- F24H1/185—Water-storage heaters 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
- F24H9/12—Arrangements for connecting heaters to circulation pipes
- F24H9/13—Arrangements for connecting heaters to circulation pipes for water heaters
- F24H9/133—Storage heaters
-
- 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 provides intelligent constant-temperature water-saving water heater and control method, the water return pipeline of the electric heater is connected between the hot water effluent's pipeline of electric heater main body and water inlet；Second temperature sensor is used for the water temperature for detecting output liquid in hot water outlet；Three-temperature sensor is used for the temperature for detecting liquid in water return pipeline, and the water temperature control water circulating pump that control module is used to be detected according to second temperature sensor and three-temperature sensor starts；After water circulating pump starts, the hot water that water circulating pump is used to discharge in hot water outlet is inputted in electric heater main body storage tank by water return pipeline.Electric heater increase water circulating pump, water return pipeline, control module and corresponding temperature sensor, the water of water heater hot-water water side when beginning to use is introduced into electric heater main body heat cycles to use, leaving water temperature meets default target temperature in the shower head pipeline of control module control simultaneously, water resource is saved, and being capable of the suitable warm water of output temperature.
Description
Technical field
The invention belongs to electric heater field, and in particular to intelligent constant-temperature water-saving water heater and control method.
Background technology
Electric heater refers to the water heater heated using electricity as the energy.Due to electric heater when mounted, electric hot water
The resettlement place of device at actual use with having a certain distance, that is to say, that the distance of tap and hot water outlet is longer.Use
Preceding first to burn water to a certain degree, then manual unlocking depotition cock, the cold water that pipeline front end was trapped in originally is excluded, due to
The pipeline connected between the pipeline and gondola water faucet of electric heater is longer, and the cold water that may result in delay in the pipeline is more, this part
Cold water is required for discharge, causes water resource waste.When hot water reaches delivery port, then hot water and cold water are carefully adjusted manually
Between flow, so as to reach corresponding temperature, could normally use, so, adjust flow when not only can also discharge
Portion of water causes water resource waste, but also understands the problem of causing water temperature over-high because of regulation is improper or be too low.Meanwhile,
It so can also waste user's substantial amounts of stand-by period.In addition, common electric heater is due to being difficult to estimated water temperature and water, it will usually
Water temperature is burnt could be by the suitable water temperature of manual adjustment, so as to cause the hot water of heating to be used far above actual use temperature
It is endless, waste the shortcoming of electric energy.
The content of the invention
For defect of the prior art, the present invention provides intelligent constant-temperature water-saving water heater and control method, and water outlet is just
Can be used suitable temperature hot water, save water resource, save electric flux, and can as needed automatic output temperature with setting temperature
Spend identical warm water.
Intelligent constant-temperature water-saving water heater, including electric heater main body and the control that is arranged in electric heater main body
Module, second temperature sensor, three-temperature sensor, water circulating pump and water return pipeline；Electric heater main body include storage tank,
Heating module and the first temperature sensor；Heating module is used to heat the liquid in storage tank, the first temperature sensor
Temperature for detecting liquid in storage tank；Control module be used for according to the first temperature sensor detect water temperature and it is default most
High-temperature resistant control heating module starts or closed；Water return pipeline is connected to the hot water effluent's pipeline and water inlet of electric heater main body
Between；Second temperature sensor is used for the water temperature for detecting output liquid in hot water outlet；Three-temperature sensor is used to detect
The temperature of liquid in water return pipeline, control module is used for the water temperature detected according to second temperature sensor and three-temperature sensor
Water circulating pump is controlled to start；After water circulating pump starts, water circulating pump is used for the hot water that will be discharged in hot water outlet by returning
In waterpipe input electric heater main body storage tank.
Preferably, in addition to the check valve that is arranged on water return pipeline, the liquid flow direction and water return pipeline of check valve
Backwater direction it is consistent.
Preferably, in addition to the magnetic valve that is arranged on the inlet channel of electric heater main body.
Preferably, in addition to the proportion magnetic valve that is arranged in the hot water effluent's pipeline of electric heater main body, ratio electromagnetism
Two water inlet pipes of valve connect hot water effluent's pipeline and inlet channel respectively.
Preferably, in addition to the triple valve that is arranged on water return pipeline, water inlet and the electric heater main body of triple valve
Hot water effluent's pipeline is connected, and two delivery ports of triple valve are connected with water return pipeline and gondola water faucet water outlet pipeline respectively.
Preferably, the triple valve is Electrocontrolled tee valve.
The control method of intelligent constant-temperature water-saving water heater, comprises the following steps：
S1：Sets target water temperature TtargetWith estimated use time Ttime, start above-mentioned intelligent constant-temperature water saving electric hot water
Device；The target water temperature is set according to voice command or human body temperature；
S2：The water temperature that control module is detected according to the first temperature sensor is set with the water temperature that second temperature sensor is detected
Highest heatproof T1And most power saving water temperature value T2；When the water temperature that the first temperature sensor is detected is more than most power saving water temperature T2When, start permanent
Warm shaping modes：Control module controls the aperture of proportion magnetic valve according to the water temperature of detection, the magnetic valve closed on inlet channel,
Start triple valve so that the water inlet of triple valve is connected with being connected the delivery port of water return pipeline, starts water circulating pump so that circulation
Water pump inputs the hot water discharged in hot water outlet in electric heater main body by water return pipeline；
S3：Control module receives the water temperature of three-temperature sensor detection, when the water temperature that three-temperature sensor is detected reaches
To target water temperature TtargetWhen, water circulating pump is closed, starts triple valve so that the water inlet of triple valve and gondola water faucet water outlet pipeline
Delivery port is connected, and opens the magnetic valve on inlet channel.
Preferably, the estimated use time TtimeScope is according to environment temperature, and target water temperature and prediction water consumption are true
It is fixed.
As shown from the above technical solution, the present invention is provided intelligent constant-temperature water-saving water heater and control method, increase are followed
Ring water pump, water return pipeline, control module and corresponding temperature sensor, by the water of water heater hot-water water side when beginning to use
Introduce electric heater main body heat cycles to use, while leaving water temperature meets default target in control module control shower head pipeline
Temperature, saves water resource, and being capable of the suitable warm water of output temperature.
Brief description of the drawings
, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical scheme of the prior art
The accompanying drawing used required in embodiment or description of the prior art is briefly described.In all of the figs, similar element
Or part is general by similar reference mark.In accompanying drawing, each element or part might not be drawn according to actual ratio.
Fig. 1 is the structural representation of existing electric heater.
Fig. 2 is structural representation of the existing electric heater added with external constant temperature device.
The structural representation for the intelligent constant-temperature water-saving water heater that Fig. 3 provides for the present invention.
Embodiment
The structure of existing electric heater is as shown in figure 1, including electric heater main body 1, electric heater main body 1 includes hot water
Outlet conduit 2, cold water outlet conduit 3, water inlet, inlet channel 4 and shower head pipeline 5；The hot water of electric heater main body 1 passes through heat
Water outlet conduit 2 is exported, the connection water inlet of inlet channel 4 and tap, and when tap is opened, cold water is defeated by inlet channel
Enter to electric heater main body, mixed warm water is exported by shower head pipeline from gondola water faucet.The electric heater is in use, open hand
The dynamic manual water mixing valve of regulation so that the warm water exported from gondola water faucet meets suitable water temperature, normally uses, thus makes for user
Into the problem of occurring water resource waste during lower water temperature.
Therefore, the electric heater added with external constant temperature device is also proposed, as shown in Fig. 2 the water outlet of adjustment electric heater
Tubular construction, and increase external control module 6 on electric heater, shorten the length of cold water pipes, reduce stagnant in cold water pipes
The liquid stayed, realizes the function of lower water temperature, but the infrastructure cost is low, it is desired nonetheless to discharge a part of cold water.
The embodiment of technical solution of the present invention is described in detail below in conjunction with accompanying drawing.Following examples are only used for
Clearly illustrate technical scheme, therefore be only used as example, and the protection model of the present invention can not be limited with this
Enclose.It should be noted that unless otherwise indicated, technical term or scientific terminology used in this application are should be belonging to the present invention
The ordinary meaning that art personnel are understood.
Embodiment：
Intelligent constant-temperature water-saving water heater, as shown in figure 3, including electric heater main body 1 and being arranged on electric heater master
Control module 6, second temperature sensor 7, three-temperature sensor 8, water circulating pump 9 and water return pipeline on body；Electric heater
Main body 1 includes storage tank, heating module and the first temperature sensor 10；Heating module is used to add the liquid in storage tank
Heat, the first temperature sensor 10 is used for the temperature for detecting liquid in storage tank；Control module 6 is used for according to the first temperature sensor
The water temperature and default highest heatproof control heating module of 10 detections start or closed；Water return pipeline is connected to electric heater main body
Hot water effluent's pipeline 2 and water inlet between；Second temperature sensor is used for the water temperature for detecting output liquid in hot water outlet；
Three-temperature sensor is used to detecting the temperature of liquid in water return pipeline, and control module is used for according to second temperature sensor and the
The water temperature control water circulating pump of three-temperature sensor detection starts；After water circulating pump starts, water circulating pump is used to hot water
The hot water discharged in the mouth of a river is inputted in electric heater main body storage tank by water return pipeline.
When it is implemented, water circulating pump can be met only with small-sized model.Water return pipeline is used for temperature is inappropriate
Water is back in electric heater main body and heated, and is exported again from gondola water faucet until water temperature is suitable.When the temperature sensor of control module first
When the water temperature detected is more than highest heatproof, control heating module is closed, and prevents from damaging electric heater.The device increases recirculated water
Pump, water return pipeline, control module and corresponding temperature sensor, the water of water heater hot-water water side when beginning to use is introduced
Electric heater main body heat cycles are used, while leaving water temperature meets default target temperature in control module control shower head pipeline
Degree, without artificial interference, realizes the function of constant temperature, saves water resource, save electric flux, and can export temperature automatically as needed
Degree and design temperature identical warm water.
Also include the check valve 11 being arranged on water return pipeline, the liquid flow direction of check valve 11 and returning for water return pipeline
Water direction is consistent.Check valve plays a part of anti-backflow, and the backwater direction of water return pipeline is identical with the direction of drawing water of water circulating pump.
Also include the magnetic valve 12 being arranged on the inlet channel of electric heater main body.Pass through magnetic valve controlled feed pipeline
Whether the break-make of interior current, running water is added by solenoid valve control.
Also include the proportion magnetic valve 13 being arranged in the hot water effluent's pipeline of electric heater main body, proportion magnetic valve 13
Two water inlet pipes connect hot water effluent's pipeline and inlet channel 4 respectively., its water side can be connected to water return pipeline or water mixing valve
In, proportion magnetic valve is used for the ratio for controlling hot water and cold water mix in mixing water, and hot water flows into ratio from hot water effluent's pipeline
Magnetic valve, cold water flows into proportion magnetic valve from inlet channel, and mixed warm water flows into water return pipeline from water side and mixed.
Also include the triple valve 14 being arranged on water return pipeline, the water inlet of triple valve 14 and the hot water of electric heater main body
Outlet conduit is connected, and two delivery ports of triple valve 14 are connected with water return pipeline and gondola water faucet water outlet pipeline respectively.The triple valve
14 be Electrocontrolled tee valve.Triple valve is changed the direction of a stream of water by changing the position of valve body, can be by changing three-way valve body
Position make it that current, can also be by changing triple valve valve from the delivery port of the water inlet of triple valve flow direction connection water return pipeline
The position of body causes current to flow to the delivery port of connecting sprinkler outlet conduit from the water inlet of triple valve.
Also include the second temperature sensor being arranged on water return pipeline, second temperature sensor is used to detect water return pipeline
The water temperature of interior liquid.Second temperature sensor is used to detect mixed water temperature in water return pipeline.
The control method of intelligent constant-temperature water-saving water heater, comprises the following steps：
S1：Sets target water temperature TtargetWith estimated use time Ttime, start above-mentioned intelligent constant-temperature water saving electric hot water
Device；The target water temperature is set according to user's request.The estimated use time TtimeScope is 20-40 minutes, preferably 30 points
Clock.Sets target water temperature can be voice command, sense the intelligent sets target water temperature of human body temperature according to infrared temperature, touch manually
Screen is touched in the way of key assignments and correlation.
S2：The water temperature that control module is detected according to the first temperature sensor is set with the water temperature that second temperature sensor is detected
Highest heatproof T1And most power saving water temperature value T2；When the water temperature that the first temperature sensor is detected is more than most power saving water temperature T2When, illustrate electricity
Fluid temperature in the water storage box of water heater main body has reached requirement, now starts thermostatic control pattern：Control module is according to inspection
The water temperature of survey controls the aperture of proportion magnetic valve, the magnetic valve closed on inlet channel, start triple valve so that triple valve enters
The mouth of a river and it is connected the delivery port of water return pipeline and connects, starts water circulating pump so that water circulating pump will be discharged in hot water outlet
Hot water is inputted in electric heater main body by water return pipeline, realizes the mixing of liquid in electric heater main body；When it is implemented, control
Molding root tuber, if the water temperature over-high of detection, reduces heat in magnetic valve according to the aperture of the water temperature Set scale magnetic valve of detection
Chilled water flow flow in water water flow, increase magnetic valve；Conversely, hot water's flow in increase magnetic valve, reduces magnetic valve
Middle chilled water flow flow；
S3：Control module receives the water temperature of three-temperature sensor detection, when the water temperature that three-temperature sensor is detected reaches
To target water temperature TtargetWhen, illustrate that the water temperature in current water return pipeline meets the requirement of client.Water circulating pump is closed, starts three
Port valve so that the water inlet of triple valve is connected with the delivery port of gondola water faucet water outlet pipeline, opens the magnetic valve on inlet channel so that
Mixed warm water is discharged from gondola water faucet, is normally used for user.
The estimated use time TtimeScope is that according to environment temperature, it is pre- that target water temperature and prediction algorithm are calculated
Survey water consumption and estimated that the intelligent water temperature of adjustment according to demand meets water demand, and being optimal uses electric power automatically
Purpose.
The water of water heater hot-water water side when beginning to use is introduced electric heater main body heat cycles and used by this method, together
When control module control shower head pipeline in leaving water temperature meet default target temperature, save water resource, and being capable of output temperature
Suitable warm water.
Finally it should be noted that：Various embodiments above is merely illustrative of the technical solution of the present invention, rather than its limitations；To the greatest extent
The present invention is described in detail with reference to foregoing embodiments for pipe, it will be understood by those within the art that：Its according to
The technical scheme described in foregoing embodiments can so be modified, or which part or all technical characteristic are entered
Row equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from various embodiments of the present invention technology
The scope of scheme, it all should cover among the claim of the present invention and the scope of specification.
Claims (8)
1. intelligent constant-temperature water-saving water heater, it is characterised in that including electric heater main body and be arranged on electric heater main body
On control module, second temperature sensor, three-temperature sensor, water circulating pump and water return pipeline；Electric heater main body bag
Include storage tank, heating module and the first temperature sensor；Heating module is used to heat the liquid in storage tank, the first temperature
Degree sensor is used for the temperature for detecting liquid in storage tank；Control module be used for according to the first temperature sensor detect water temperature and
Default highest heatproof control heating module starts or closed；Water return pipeline is connected to the hot water effluent's pipeline of electric heater main body
Between water inlet；Second temperature sensor is used for the water temperature for detecting output liquid in hot water outlet；Three-temperature sensor
Temperature for detecting liquid in water return pipeline, control module is used to be examined according to second temperature sensor and three-temperature sensor
The water temperature control water circulating pump of survey starts；After water circulating pump starts, water circulating pump is used for the heat that will be discharged in hot water outlet
Water is inputted in electric heater main body storage tank by water return pipeline.
2. intelligent constant-temperature water-saving water heater according to claim 1, it is characterised in that also including being arranged on water return pipeline
On check valve, the liquid flow direction of check valve is consistent with the backwater direction of water return pipeline.
3. intelligent constant-temperature water-saving water heater according to claim 1, it is characterised in that also including being arranged on electric heater
Magnetic valve on the inlet channel of main body.
4. intelligent constant-temperature water-saving water heater according to claim 3, it is characterised in that also including being arranged on electric heater
Proportion magnetic valve in the hot water effluent's pipeline of main body, two water inlet pipes of proportion magnetic valve connect respectively hot water effluent's pipeline and
Inlet channel.
5. intelligent constant-temperature water-saving water heater according to claim 4, it is characterised in that also including being arranged on water return pipeline
On triple valve, the water inlet of triple valve is connected with the hot water effluent's pipeline of electric heater main body, two delivery ports of triple valve
It is connected respectively with water return pipeline and gondola water faucet water outlet pipeline.
6. intelligent constant-temperature water-saving water heater according to claim 5, it is characterised in that the triple valve is automatically controlled threeway
Valve.
7. the control method of intelligent constant-temperature water-saving water heater, it is characterised in that comprise the following steps：
S1：Sets target water temperature TtargetWith estimated use time Ttime, start the intelligent constant-temperature water saving electric heating described in claim 5
Hydrophone；The target water temperature is set according to voice command or human body temperature；
S2：The water temperature that control module is detected according to the first temperature sensor sets highest with the water temperature that second temperature sensor is detected
Heatproof T1And most power saving water temperature value T2；When the water temperature that the first temperature sensor is detected is more than most power saving water temperature T2When, start constant temperature and adjust
Section pattern：Control module controls the aperture of proportion magnetic valve according to the water temperature of detection, the magnetic valve closed on inlet channel, starts
Triple valve so that the water inlet of triple valve is connected with being connected the delivery port of water return pipeline, starts water circulating pump so that water circulating pump
The hot water discharged in hot water outlet is inputted in electric heater main body by water return pipeline；
S3：Control module receives the water temperature of three-temperature sensor detection, when the water temperature that three-temperature sensor is detected reaches mesh
Mark water temperature TtargetWhen, water circulating pump is closed, starts triple valve so that the water inlet of triple valve and the water outlet of gondola water faucet water outlet pipeline
Mouth connection, opens the magnetic valve on inlet channel.
8. the control method of intelligent constant-temperature water-saving water heater according to claim 7, it is characterised in that described to be expected to make
Use time TtimeScope is determined according to environment temperature, target water temperature and prediction water consumption.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201710129218.0A CN106969495A (en) | 2017-03-06 | 2017-03-06 | Intelligent constant-temperature water-saving water heater and control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201710129218.0A CN106969495A (en) | 2017-03-06 | 2017-03-06 | Intelligent constant-temperature water-saving water heater and control method |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107728685A (en) * | 2017-11-17 | 2018-02-23 | 北京凌顶科技有限公司 | A kind of intelligent constant-temperature water controling method |
| CN107843140A (en) * | 2017-11-10 | 2018-03-27 | 河南瑞美真发股份有限公司 | A kind of hair products rinsing heat exchanger |
| CN107906733A (en) * | 2017-12-01 | 2018-04-13 | 信宜市家加美不锈钢制品有限公司 | Save water and energy combustion gas shower system and its control method |
| CN108954844A (en) * | 2018-07-13 | 2018-12-07 | 苏州韵之秋智能科技有限公司 | A kind of water heater with water-saving return flow line |
| CN110345638A (en) * | 2019-07-08 | 2019-10-18 | 珠海格力电器股份有限公司 | The water-saving method and storage type water heater of storage type water heater |
| US10448762B2 (en) | 2017-09-15 | 2019-10-22 | Kohler Co. | Mirror |
| CN110726253A (en) * | 2019-10-09 | 2020-01-24 | 珠海格力电器股份有限公司 | Intelligent bathing system and method |
| CN110848969A (en) * | 2019-11-12 | 2020-02-28 | 华帝股份有限公司 | Electric water heater with hot water circulation function and control method thereof |
| US10663938B2 (en) | 2017-09-15 | 2020-05-26 | Kohler Co. | Power operation of intelligent devices |
| US10887125B2 (en) | 2017-09-15 | 2021-01-05 | Kohler Co. | Bathroom speaker |
| US11099540B2 (en) | 2017-09-15 | 2021-08-24 | Kohler Co. | User identity in household appliances |
| CN114809203A (en) * | 2022-05-12 | 2022-07-29 | 上海工程技术大学 | Energy-saving constant-temperature intelligent water supply system and water supply method for wash platform |
| CN114962731A (en) * | 2022-02-09 | 2022-08-30 | 安徽庐飞特智能科技有限公司 | Water-saving temperature-control water mixing valve device and using method thereof |
| US11921794B2 (en) | 2017-09-15 | 2024-03-05 | Kohler Co. | Feedback for water consuming appliance |
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Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US10887125B2 (en) | 2017-09-15 | 2021-01-05 | Kohler Co. | Bathroom speaker |
| US11921794B2 (en) | 2017-09-15 | 2024-03-05 | Kohler Co. | Feedback for water consuming appliance |
| US11314214B2 (en) | 2017-09-15 | 2022-04-26 | Kohler Co. | Geographic analysis of water conditions |
| US11314215B2 (en) | 2017-09-15 | 2022-04-26 | Kohler Co. | Apparatus controlling bathroom appliance lighting based on user identity |
| US11099540B2 (en) | 2017-09-15 | 2021-08-24 | Kohler Co. | User identity in household appliances |
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| CN107843140A (en) * | 2017-11-10 | 2018-03-27 | 河南瑞美真发股份有限公司 | A kind of hair products rinsing heat exchanger |
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| CN107728685A (en) * | 2017-11-17 | 2018-02-23 | 北京凌顶科技有限公司 | A kind of intelligent constant-temperature water controling method |
| CN107906733A (en) * | 2017-12-01 | 2018-04-13 | 信宜市家加美不锈钢制品有限公司 | Save water and energy combustion gas shower system and its control method |
| CN108954844A (en) * | 2018-07-13 | 2018-12-07 | 苏州韵之秋智能科技有限公司 | A kind of water heater with water-saving return flow line |
| CN110345638A (en) * | 2019-07-08 | 2019-10-18 | 珠海格力电器股份有限公司 | The water-saving method and storage type water heater of storage type water heater |
| CN110345638B (en) * | 2019-07-08 | 2020-08-11 | 珠海格力电器股份有限公司 | Water saving method of water storage type water heater and water storage type water heater |
| CN110726253A (en) * | 2019-10-09 | 2020-01-24 | 珠海格力电器股份有限公司 | Intelligent bathing system and method |
| CN110848969A (en) * | 2019-11-12 | 2020-02-28 | 华帝股份有限公司 | Electric water heater with hot water circulation function and control method thereof |
| CN114962731A (en) * | 2022-02-09 | 2022-08-30 | 安徽庐飞特智能科技有限公司 | Water-saving temperature-control water mixing valve device and using method thereof |
| CN114809203A (en) * | 2022-05-12 | 2022-07-29 | 上海工程技术大学 | Energy-saving constant-temperature intelligent water supply system and water supply method for wash platform |
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