CN113606777A - Intelligent instant heating type water purification boiler without water tank - Google Patents
Intelligent instant heating type water purification boiler without water tank Download PDFInfo
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- CN113606777A CN113606777A CN202110899689.6A CN202110899689A CN113606777A CN 113606777 A CN113606777 A CN 113606777A CN 202110899689 A CN202110899689 A CN 202110899689A CN 113606777 A CN113606777 A CN 113606777A
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- water
- control system
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- purified water
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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
- F24H1/10—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium
- F24H1/101—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium using electric energy supply
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- 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
- F24H9/0005—Details for water heaters
- F24H9/0042—Cleaning arrangements
-
- 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
-
- 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
- F24H9/2028—Continuous-flow heaters
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/008—Control or steering systems not provided for elsewhere in subclass C02F
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Thermal Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Water Treatment By Sorption (AREA)
Abstract
The invention discloses an intelligent water tank-free instant heating type purified water boiler which comprises a purified water manufacturing system for manufacturing purified water, an instant heating type heating system for heating purified water, a boiled water and warm water output control system for outputting boiled water or warm water, a normal-temperature water output control system for outputting warm water and an intelligent control system. In the implementation process of the invention, the water purification capacity is increased, the water purification storage tank is removed, the control system adopts an intelligent control mode and is controlled by the singlechip, the produced purified water is not stored, the amount of the produced purified water is required to be prepared, the purified water is prepared immediately when the purified water is taken, the phenomenon that the prepared purified water is stored for a long time is avoided, and the water purification system is healthy and energy-saving.
Description
Technical Field
The invention belongs to the technical field of drinking water equipment for work places, and particularly relates to an intelligent water tank-free instant heating type water purifying boiler.
Background
The existing water boiler needs a purified water storage tank to store prepared purified water firstly. If the number of users of the water boiler is small or the water boiler is used intermittently, the produced purified water needs to be stored for a long time, and the purified water stored for a long time is not good for the health of people after being drunk.
Disclosure of Invention
Aiming at the situation, in order to overcome the defects of the prior art, the invention provides an intelligent instant heating type water purifying boiler without a water tank, which effectively solves the problems in the background art.
In order to achieve the purpose, the invention provides the following technical scheme: an intelligent instant heating type water purifying boiler without a water tank is disclosed: comprises a purified water manufacturing system for manufacturing purified water, an instant heating type heating system for heating purified water, a boiled water and warm water output control system for outputting boiled water or warm water, a normal temperature water output control system for outputting warm water and an intelligent control system,
raw water flows into the instant electric heating system or the normal temperature water input and control system through the purified water manufacturing system,
the water in the instant heating type electric heating system flows into the boiled water and warm water input and control system,
the intelligent control system is respectively and electrically connected with the purified water manufacturing system, the instant heating type electric heating system, the boiled water and warm water input and control system and the normal temperature water input and control system.
Preferably, the purified water production system comprises two identical pipelines, the pipelines comprise a primary filtering device, a water pressurizing device, a reverse osmosis filtering device and a rear activated carbon filtering device which are sequentially connected, a wastewater ratio regulating and controlling device is further connected to the sub-permeation filtering device, wastewater is discharged by the wastewater ratio regulating and controlling device, one pipeline is connected with the normal-temperature water output and control system, and the other pipeline is connected with the instant electric heating system.
Preferably, the intelligent control system comprises a control panel, a temperature sensor, an electric heater liquid level switch, a liquid crystal display screen or an LED display, an electric heating pipe and a relay,
the electric heating pipe is connected with a switch power supply through a relay,
the number of the temperature sensors is two, the temperature sensors are respectively a first temperature sensor and a second temperature sensor which are respectively connected with the control panel,
the liquid level switch of the electric heater is connected with the control panel,
and the liquid crystal display screen or the LED display is connected with the control panel.
Preferably, the intelligent control system also comprises a main equipment breaker, an electric heating pipe circuit device, a control circuit breaker, a fuse and a transformer,
the equipment main breaker is connected with the relay through an electric heating pipe breaker,
the electric heating pipe breaker is connected with the control circuit breaker, and the equipment main breaker is connected with the control circuit breaker,
the equipment main circuit breaker is connected with the control power supply and is connected with the control panel through a transformer,
the control circuit breaker is connected with the switch power supply through a fuse, and the control circuit breaker is connected with the control panel through the fuse and the transformer.
Preferably, the intelligent control system further comprises a motor, the switch power supply is connected with the control panel through the motor, and the motor pumps purified water into the normal-temperature water input control system and the instant heating type electric heating system.
Preferably, the intelligent control system further comprises a water quality detection device, and the control panel is connected with the water quality monitoring device.
Preferably, the normal-temperature water input and control system and the boiled water and warm water input and control system both comprise a first output control device, and the instant electric heating system comprises an instant electric heating device.
Compared with the prior art, the invention has the beneficial effects that:
1) the water purification manufacturing system increases the water purification capacity, removes a water purification storage tank, adopts an intelligent control mode, is controlled by the singlechip, produces no water, needs a certain amount of water, and can be used for preparing water instantly without the phenomenon that the produced water is stored for a long time, thereby being healthy and energy-saving;
2) the instant quick heating is realized, no power is consumed when no water is pumped, the energy is saved by more than 60 percent, and the defect that nitrite is generated due to 'rolling water' in box type heating is radically solved;
3) the equipment is controlled in an intelligent control mode, so that the operation is convenient and labor-saving, and the operation is reliable.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic diagram of the operation of the apparatus of the present invention;
FIG. 2 is a schematic diagram of the waterway system of the present invention;
FIG. 3 is a schematic diagram of the intelligent control system of the present invention;
FIG. 4 is a diagram of steps in use of the present invention.
In the figure: 101. a purified water production system; 102. an instantaneous electric heating system; 103. an intelligent control system; 104. a normal temperature water input and control system; 105. a boiled water and warm water input and control system; 201. a primary filtration device; 202. a water pressurizing device; 203. a reverse osmosis filtration device; 204. a wastewater ratio regulating device; 205. a post-positioned active carbon filtering device; 206. an instantaneous electric heating device; 207. a water output control device; 301. a device main breaker; 302. a control circuit breaker; 303. liquid crystal display screens or LED displays; 304. an electric heater level switch; 305. connecting a line; 306. a first temperature sensor; 307. a second temperature sensor; 308. a control panel; 309. a boiled water and warm water input control device; 310. a normal temperature water input and control device; 311. a water quality detection device; 312. an electric motor; 313. a switching power supply; 314. insurance; 315. an electric heating tube; 316. a relay; 317. an electric-heating-tube breaker 6.
Detailed Description
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 derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention is shown in fig. 1-4, and discloses an intelligent water tank-free instant heating type purified water boiler, which comprises a purified water manufacturing system for manufacturing purified water, an instant heating type heating system for heating purified water, a boiled water and warm water output control system for outputting boiled water or warm water, a normal temperature water output control system for outputting warm water and an intelligent control system, wherein raw water flows into the instant heating type electric heating system or the normal temperature water output control system through the purified water manufacturing system, water in the instant heating type electric heating system flows into the boiled water and warm water output control system, and the intelligent control system is respectively and electrically connected with the purified water manufacturing system, the instant heating type electric heating system, the boiled water and warm water output control system and the normal temperature water output control system. Raw water is purified by the water purification manufacturing system to become purified water which can be directly drunk. If the boiled water or the warm water with the temperature higher than that of the normal-temperature water is needed, the water is heated to the needed temperature through the instant electric heating system and then is output through the boiled water and warm water output control system; if the water is not required to be heated, the water is directly drunk and is output through the normal-temperature water input and control system. The water boiler has no heating water tank and no pure water storage tank.
As shown in fig. 2, the purified water production system comprises two identical pipelines, the pipelines comprise a primary filtering device, a water pressurizing device, a reverse osmosis filtering device and a rear activated carbon filtering device which are sequentially connected, a wastewater ratio regulating device is connected to the sub-permeation filtering device, wastewater is discharged by the wastewater ratio regulating device, one pipeline is connected with the normal-temperature water output and control system, and the other pipeline is connected with the instant electric heating system. The raw water is firstly filtered by a primary filtering device, and the water after primary filtering is divided into two paths. And each of the two paths is pressurized by a pressurizing device and is subjected to reverse osmosis by a reverse osmosis device. The wastewater ratio of reverse osmosis, namely the ratio of the wastewater volume to the pure water volume, is well adjusted by a wastewater ratio adjusting device. The waste water is recycled, and the purified water is filtered by a post-positioned active carbon filtering device. The path for preparing the boiled water or the warm water with the temperature higher than that of the normal-temperature water is heated to the required temperature by the instant electric heating device and then is output by the water output control device; the path which does not need to be heated is directly output by the water output control device.
As shown in fig. 3, the intelligent control system comprises a control panel, temperature sensors, an electric heater liquid level switch, a liquid crystal display or an LED display, an electric heating pipe and a relay, the electric heating pipe is connected with a switching power supply through the relay, the number of the temperature sensors is two, namely a first temperature sensor and a second temperature sensor, which are respectively connected with the control panel, the electric heater liquid level switch is connected with the control panel, the liquid crystal display or the LED display is connected with the control panel, the intelligent control system further comprises an equipment main breaker, an electric heating pipe circuit breaker, a control circuit breaker, a fuse and a transformer, the equipment main breaker is connected with the relay through the electric heating pipe breaker, the electric heating pipe breaker is connected with the control circuit breaker, and the equipment main breaker is connected with the control circuit breaker, the equipment main circuit breaker is connected with the control power supply, the equipment main circuit breaker is connected with the control panel through the transformer, the control circuit breaker is connected with the switch power supply through the fuse, and the control circuit breaker is connected with the control panel through the fuse and the transformer. The equipment adopts a three-phase five-wire system with a ground wire, three live wires and a zero wire respectively because of higher power. Three live wires and one zero line pass through the leakage circuit breaker, and the three live wires connected with the electric heating pipe are additionally connected with the circuit breaker. The circuit and the control circuit of the electric heating pipe are connected with different circuit breakers, so that problems can be found conveniently during debugging and maintenance of the equipment. All information of all parts of the equipment is input into a control panel, the whole equipment is controlled by a control panel system, the intelligent control system further comprises a motor, a switching power supply is connected with the control panel through the motor, the motor pumps purified water into a normal-temperature water input and control system and an instant electric heating system, the intelligent control system further comprises a water quality detection device, the control panel is connected with a water quality monitoring device, the normal-temperature water input and control system and the boiled water and warm water input and control system both comprise a first output control device, and the instant electric heating system comprises an instant electric heating device.
The boiling water button is pressed to take the boiled water or the warm water with the temperature higher than the normal temperature water, and the normal temperature water button is pressed to take the normal temperature water. The intermediate water purification process is the same, and the process of preparing the boiled water has one more instant electric heater than the process of preparing the normal temperature water.
When this scheme was implemented, can subdivide the water intaking temperature to satisfy various users' demand, for example: the first one is provided with water capable of taking normal temperature, the second one is provided with hot water (80-90 ℃) capable of taking tea, the third one is provided with hot water (40-50 ℃) capable of directly brewing milk powder, and the fourth one is provided with boiled water (100 ℃) capable of directly taking.
Fig. 4 shows steps in the implementation of the invention.
When receiving boiled water/hot water:
start of
Firstly, pressing a boiling button;
secondly, the system records the number of times of pressing the key;
thirdly, when the pressure of a low-pressure sensor at the water inlet is greater than the minimum required value, a water inlet electromagnetic valve is opened;
fourthly, starting a booster pump (a motor) to start to prepare purified water;
fifthly, opening an electric ball valve at an input port of the instant electric heater, and inputting the prepared purified water into the electric heater;
sixthly, switching off a low water level switch of a liquid level switch in the electric heater, entering the seventh step, otherwise, returning to the fifth step,
seventhly, electrifying the electric heating pipe to heat water;
eighthly, whether the temperature sensor in the electric heater detects that the water temperature reaches a set value or not, if so, the ninth step is executed, if not, the seventh step is returned,
ninth step, the boiled water delivery and control electric ball valve is opened to deliver boiled water or warm water to the user,
the tenth step, pressing a boiling water button,
the tenth step, whether the number of key pressing is even, if so, the twelfth step is carried out, if so, the system records the number of key pressing and returns to the ninth step,
the twelfth step, the pump is added to stop, the purified water is stopped, the electric heater is powered off, the heating is stopped, the electric ball valve is controlled by the boiled water delivery to be closed,
and step thirteen, closing the water inlet electromagnetic valve and finishing.
When normal temperature water is received:
start of
Firstly, pressing a normal temperature water button;
secondly, the system records the number of times of pressing the key;
thirdly, when the pressure of a low-pressure sensor at the water inlet is greater than the minimum required value, a water inlet electromagnetic valve is opened;
fourthly, starting a booster pump (a motor) to start to prepare purified water;
fifthly, opening the normal-temperature water output control electric ball valve and outputting the prepared purified water to a user;
sixthly, pressing a normal temperature water button,
seventh step, whether the number of key pressing is even, if so, the eighth step is carried out, if so, the system records the number of key pressing and returns to the fifth step,
eighth step, stopping the pump, stopping the purified water production, cutting off the power of the electric heater, stopping heating, closing the purified water output control electric ball valve,
and step nine, closing the water inlet electromagnetic valve and finishing.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides an intelligent no water tank instant heating type purifies boiler which characterized in that: comprises a purified water manufacturing system for manufacturing purified water, an instant heating type heating system for heating purified water, a boiled water and warm water output control system for outputting boiled water or warm water, a normal temperature water output control system for outputting warm water and an intelligent control system,
raw water flows into the instant electric heating system or the normal temperature water input and control system through the purified water manufacturing system,
the water in the instant heating type electric heating system flows into the boiled water and warm water input and control system,
the intelligent control system is respectively and electrically connected with the purified water manufacturing system, the instant heating type electric heating system, the boiled water and warm water input and control system and the normal temperature water input and control system.
2. The intelligent tankless, instant heating, purified water boiler of claim 1, further comprising: the water purification manufacturing system comprises two identical pipelines, the pipelines comprise a primary filtering device, a water pressurizing device, a reverse osmosis filtering device and a rear activated carbon filtering device which are sequentially connected, a wastewater ratio regulating and controlling device is further connected to the sub-permeation filtering device, wastewater is discharged by the wastewater ratio regulating and controlling device, one pipeline is connected with the normal-temperature water output and control system, and the other pipeline is connected with the instant electric heating system.
3. The intelligent tankless, instant heating, purified water boiler of claim 1, further comprising: the intelligent control system comprises a control panel, a temperature sensor, an electric heater liquid level switch, a liquid crystal display screen or an LED display, an electric heating pipe and a relay,
the electric heating pipe is connected with a switch power supply through a relay,
the number of the temperature sensors is two, the temperature sensors are respectively a first temperature sensor and a second temperature sensor which are respectively connected with the control panel,
the liquid level switch of the electric heater is connected with the control panel,
and the liquid crystal display screen or the LED display is connected with the control panel.
4. The intelligent tankless, instant heating, purified water boiler of claim 3, further comprising: the intelligent control system also comprises a main equipment breaker, an electric heating pipe circuit device, a control circuit breaker, a fuse and a transformer,
the equipment main breaker is connected with the relay through an electric heating pipe breaker,
the electric heating pipe breaker is connected with the control circuit breaker, and the equipment main breaker is connected with the control circuit breaker,
the equipment main circuit breaker is connected with the control power supply and is connected with the control panel through a transformer,
the control circuit breaker is connected with the switch power supply through a fuse, and the control circuit breaker is connected with the control panel through the fuse and the transformer.
5. The intelligent tankless, instant heating, purified water boiler of claim 3, further comprising: the intelligent control system further comprises a motor, the switch power supply is connected with the control panel through the motor, and the motor pumps purified water into the normal-temperature water output control system and the instant heating type electric heating system.
6. The intelligent tankless, instant heating, purified water boiler of claim 3, further comprising: the intelligent control system also comprises a water quality detection device, and the control panel is connected with the water quality monitoring device.
7. The intelligent sewage tank instant heating type purified water boiler of claim 1, characterized in that: the normal-temperature water input and control system and the boiled water and warm water input and control system respectively comprise a first output control device, and the instant electric heating system comprises an instant electric heating device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110899689.6A CN113606777A (en) | 2021-08-06 | 2021-08-06 | Intelligent instant heating type water purification boiler without water tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110899689.6A CN113606777A (en) | 2021-08-06 | 2021-08-06 | Intelligent instant heating type water purification boiler without water tank |
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| Publication Number | Publication Date |
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| CN113606777A true CN113606777A (en) | 2021-11-05 |
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| CN202110899689.6A Pending CN113606777A (en) | 2021-08-06 | 2021-08-06 | Intelligent instant heating type water purification boiler without water tank |
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| CN107270548A (en) * | 2017-08-08 | 2017-10-20 | 广东万家乐燃气具有限公司 | Overtemperature prote control system and electric heater |
| CN112325484A (en) * | 2020-11-16 | 2021-02-05 | 广东万和电气有限公司 | Water-feeding power-off protection device of electric water heater and electric water heater with same |
| CN113028653A (en) * | 2021-04-16 | 2021-06-25 | 佛山市汉尔普电气科技有限公司 | Small power large flow instant electric water boiler |
-
2021
- 2021-08-06 CN CN202110899689.6A patent/CN113606777A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6065939A (en) * | 1998-08-14 | 2000-05-23 | Lin; Yung-Fa | Drinking water supply for automobile purpose |
| CN201469006U (en) * | 2009-08-25 | 2010-05-19 | 李秀田 | Micro controller of drinking trough |
| JP2012002377A (en) * | 2010-06-14 | 2012-01-05 | Fuji Electric Retail Systems Co Ltd | Hot water supply device |
| KR101160795B1 (en) * | 2012-03-05 | 2012-06-27 | 유종호 | Water heater with automatic controller |
| CN203399989U (en) * | 2013-03-06 | 2014-01-22 | 宣朝辉 | Intelligent direct cold and hot water dispenser |
| CN103253786A (en) * | 2013-06-13 | 2013-08-21 | 李秀田 | Instant-heating boiling water purification system without water tank |
| CN103940095A (en) * | 2014-03-16 | 2014-07-23 | 泰州市兴东煤矿机械制造有限公司 | Water leakage alarm for electric heating water tank |
| CN206120029U (en) * | 2016-07-18 | 2017-04-26 | 广东顺德新泽泉节能设备有限公司 | Energy -conserving safe drinking water machine of constant -pressure type |
| CN106495347A (en) * | 2016-11-17 | 2017-03-15 | 伊美特(上海)环保科技股份有限公司 | A kind of heating integral type table top Drinking fountain |
| CN107270548A (en) * | 2017-08-08 | 2017-10-20 | 广东万家乐燃气具有限公司 | Overtemperature prote control system and electric heater |
| CN112325484A (en) * | 2020-11-16 | 2021-02-05 | 广东万和电气有限公司 | Water-feeding power-off protection device of electric water heater and electric water heater with same |
| CN113028653A (en) * | 2021-04-16 | 2021-06-25 | 佛山市汉尔普电气科技有限公司 | Small power large flow instant electric water boiler |
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Application publication date: 20211105 |
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