CN109000376A - water heater control system and method - Google Patents
water heater control system and method Download PDFInfo
- Publication number
- CN109000376A CN109000376A CN201810766241.5A CN201810766241A CN109000376A CN 109000376 A CN109000376 A CN 109000376A CN 201810766241 A CN201810766241 A CN 201810766241A CN 109000376 A CN109000376 A CN 109000376A
- Authority
- CN
- China
- Prior art keywords
- face
- water tank
- protective cover
- water
- water heater
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
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Classifications
-
- 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 discloses a kind of water heater control systems, including water heater body, the water heater body includes water tank and the control device that is arranged among the water tank front end face, the water tank front end face upper left quarter is provided with heating lamp and insulation indicator lamp, water tank right end top is equipped with water level sensor and temperature sensor, the water tank bottom is equipped with pedestal, hot water outlet and cooling water inlet are symmetrically installed at left and right sides of the base bottom, solenoid valve is mounted on the hot water outlet and the cooling water inlet, the control device includes the substrate being fixedly connected with the water tank, manipulation plate is provided on the substrate front end face, control button and display screen are provided on the manipulation front edge of board face, the two sides up and down of the substrate front end face are symmetrically arranged with the sliding slot that left and right extends, the manipulation front edge of board position is provided with The protective cover that can be horizontally slipped；Present apparatus operational safety is stablized, easy to operate, will not influence the aesthetics of water heater, water heater is easy to use.
Description
Technical field
The invention belongs to technical field of water heaters, and in particular to a kind of water heater control system and method.
Background technique
Water heater just refers to makes cold water temperature increase the one kind for becoming hot water within a certain period of time by various physical principles
Device；Electric heater, gas heater, solar water heater, magnetic energy water heater, air energy thermal water can be divided into according to principle difference
Device, water heater in central heating etc., the control device of existing water heater expose outside the water heater more, the display screen table on control device
Face, which easily collects, to be stayed dust or because external force reason occurs scratching phenomenon, seriously affects the beauty of water heater, and influence water heater
Normal use.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of water heater control system and methods, are able to solve above-mentioned existing
There is the problems in technology.
In order to solve the above-mentioned technical problems, the present invention provides the following technical solutions:
A kind of water heater control system of the invention, including water heater body, the water heater body include water tank and setting
Control device among the water tank front end face, the water tank front end face upper left quarter are provided with heating lamp and heat preservation instruction
Lamp, water tank right end top are equipped with water level sensor and temperature sensor, and the water tank bottom is equipped with pedestal, the base
Seat is symmetrically installed with hot water outlet and cooling water inlet at left and right sides of bottom, is respectively mounted on the hot water outlet and the cooling water inlet
There is solenoid valve, the control device includes the substrate being fixedly connected with the water tank, is provided with manipulation on the substrate front end face
Plate, control button and display screen are provided on the manipulation front edge of board face, and the two sides up and down of the substrate front end face are symmetrical arranged
The sliding slot for having left and right to extend, the manipulation front edge of board position is provided with the protective cover that can be horizontally slipped, is arranged in the protective cover
There is observation window, the protective cover front end face, which is located on the right side of the observation window, is provided with catching groove, the left and right of the protective cover rear end face
Two sides are symmetrically arranged with slot, and the left and right sides of protective cover rear end face is also symmetrically arranged with demisting pad, and the demisting pad passes through soft
Property connector be detachably connected with the slot, the right side of the protective cover rear end face in be symmetrically arranged with up and down be inserted into it is corresponding
The sliding block being slidably connected in the sliding slot with the sliding slot is communicated with driving between two sliding slot left ends in the substrate
Slot, left and right, which is extended, in the sliding slot the driving threaded rod that connection is threadedly engaged through the sliding block and with the sliding block,
The driving threaded rod left end extends in the driver slot to the left and is rotatably cooperatively connected with driver slot left end wall, institute
It states and is fixedly installed with pinion in driver slot on two driving threaded rods, insertion is set among the wall of the driver slot left end
It is equipped with driving motor, the driving motor right end has been connected by power drive shaft, main tooth is symmetrically set in the drive shaft
Wheel is connected with chain between each master gear and the corresponding pinion, the substrate right end is in symmetrical above and below
It is provided with the covering component to cover the sliding slot.
The heating lamp is located on the left of the insulation indicator lamp as a preferred technical solution, the level sensor
Device is located above the temperature sensor, and the control button is located on the right side of the display screen.
The master gear is identical as the pinion diameter as a preferred technical solution, the master gear in left side with
Pinion on the upper driving threaded rod is oppositely arranged, the master gear on right side and the driving threaded rod under
On pinion be oppositely arranged, the drive shaft right end is rotatably cooperatively connected with the driver slot right end wall, the driving spiral shell
Rasp bar right end is rotatably cooperatively connected with the sliding slot right end wall.
The covering component includes cylinder and is arranged in the cylinder and is open towards a left side as a preferred technical solution,
Inside groove, be collapsibly provided with roller blind in the inside groove, the roller blind has a tensile elasticity, the roller blind left end with
The protective cover right side is fixedly connected, and the roller blind right end is fixedly connected with the inside groove right end wall, the roller blind meeting
With the horizontally slipping for protective cover, left and right is stretched.
The width of the roller blind is greater than the width of the sliding slot as a preferred technical solution,.
The water level sensor and the temperature sensor are respectively protruding into the water tank as a preferred technical solution,
It is detected, the water level sensor and the temperature sensor are electrically connected with control node microprocessor, the control
Node microprocessor is electrically connected by the solenoid valve with the water tank, and the control node microprocessor transmits mould by data
Block, data conversion module and display module are electrically connected with the display screen, and the data transmission module is by comparing circuit and institute
Heating lamp and insulation indicator lamp electrical connection are stated, the water tank front end face upper right quarter is equipped with pressure gauge.
A kind of application method of water heater control system, in use, water level sensor and temperature by being installed on water tank
Sensor gives the real-time Data Transmission detected in water tank to control node microprocessor, control node microprocessor controls solenoid valves
Starting and closing open and close to control hot water outlet and cooling water inlet, and then the water temperature in regulating tank, control simultaneously
Node microprocessor is by data transmission module and data conversion module will collect waterlevel data and temperature data transmits respectively
To display module and comparison circuit, data are shown on display screen by display module, and comparison circuit adds according to setting Numerical Control
Thermal light and insulation indicator lamp starting, the protective cover of display screen front end setting sliding, horizontally slipping for protective cover pass through control
Driving motor work, driving motor task driven drive shaft turns, drive shaft turns drive master gear rotation, and master gear rotation is driven
Dynamic to be rotated by chain drive pinion, pinion rotation drives driving threaded rod rotation, driving threaded rod rotate driving sliding
It horizontally slips, sliding horizontally slips that protective cover is driven to horizontally slip, and so as to protect to display screen, passes through protection
The demisting pad installed on cover back-end face can remove the fog and dust of display screen surface.
The beneficial effects of the present invention are:
1. the water level sensor and temperature sensor by installing on water tank are by the real-time Data Transmission detected in water tank to control
Node microprocessor, the starting of control node microprocessor controls solenoid valves and closes to control hot water outlet and cooling water inlet is beaten
It is open and close, and then the water temperature in regulating tank, while control node microprocessor passes through data transmission module and data conversion
Module will collect waterlevel data and temperature data is transferred to display module and comparison circuit respectively, and display module shows data
Onto display screen, comparison circuit starts according to setting Numerical Control heating lamp and insulation indicator lamp, to realize the present invention
The work of device.
2. protective cover horizontally slips by controlling driving motor work by the protective cover in the setting sliding of display screen front end
Make, driving motor task driven drive shaft turns, drive shaft turns drive master gear rotation, and master gear rotate driving passes through chain
Pinion rotation is driven, pinion rotation drives driving threaded rod rotation, and driving threaded rod rotate driving sliding horizontally slips, sliding
It is dynamic to horizontally slip that protective cover is driven to horizontally slip, so as to be protected to display screen, protection cap surface setting observation
Window can be visually seen the content of display screen display through observation window, while not influencing display screen phenomenon effect, significantly
The display screen of protection itself；And the automatic sliding of protective cover is realized, avoid manual hand manipulation.
3. the fog and dust of display screen surface can be removed by the demisting pad installed on protective cover rear end face, anti-
During protecting cover horizontally slips, demisting pad and display screen friction so that defogging effect is good, and are led between demisting pad and protective cover
Soft connector connection is crossed, disassembly, replacement are convenient, can prevent dust from entering in sliding slot by roller blind, so that the present apparatus is run
Safety and stability, it is easy to operate, the aesthetics of water heater will not be influenced, water heater is easy to use.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is overall structure diagram of the invention；
Fig. 2 is the structural schematic diagram of protective cover rear end face in the present invention；
Fig. 3 is the structural schematic diagram in the present invention after the dismounting of protective cover rear end face demisting pad；
Fig. 4 is the structural schematic diagram of substrate upper hopper chute and driver slot institute out position in the present invention；
Fig. 5 is demisting mat structure schematic diagram of the invention；
Fig. 6 is system structure diagram of the invention.
Specific embodiment
The preferred embodiment of the present invention is described in detail with reference to the accompanying drawing, so that advantages and features of the invention energy
It is easier to be readily appreciated by one skilled in the art, so as to make a clearer definition of the protection scope of the present invention.
As shown in figures 1 to 6, a kind of water heater control system of the invention, including water heater body 1, the water heater body
1 includes water tank 2 and the control device 3 being arranged among 2 front end face of water tank, 2 front end face upper left quarter of the water tank setting
There are heating lamp 4 and insulation indicator lamp 5, the 2 right end top of water tank is equipped with water level sensor 7 and temperature sensor 8, institute
It states 2 bottom of water tank and pedestal 16 is installed, be symmetrically installed with hot water outlet 17 and cooling water inlet at left and right sides of 16 bottom of pedestal
18, solenoid valve 19 is mounted on the hot water outlet 17 and the cooling water inlet 18, and the control device 3 includes and the water
The substrate 9 that case 2 is fixedly connected is provided with manipulation plate 10 on 9 front end face of substrate, is provided on 10 front end face of manipulation plate
Control button 11 and display screen 12, the two sides up and down of 9 front end face of substrate are symmetrically arranged with the sliding slot 14 that left and right extends, described
Manipulation 10 front position of plate is provided with the protective cover 13 that can be horizontally slipped, and observation window 20 is provided in the protective cover 13, described
13 front end face of protective cover, which is located on the right side of the observation window 20, is provided with catching groove 15, and the left and right sides of 13 rear end face of protective cover is right
Title is provided with slot 22, and the left and right sides of 13 rear end face of protective cover is also symmetrically arranged with demisting pad 21, and the demisting pad 21 passes through
Soft connector 23 is detachably connected with the slot 22, and the right side of 13 rear end face of protective cover is symmetrically arranged with insertion in upper and lower
The sliding block 40 being slidably connected into the corresponding sliding slot 14 with the sliding slot 14, in two sliding slots 14 in the substrate 9
Be communicated with driver slot 45 between left end, in the sliding slot 14 left and right be extended have through the sliding block 40 and with the sliding block 40
Be threadedly engaged the driving threaded rod 44 of connection, 44 left end of driving threaded rod extend in the driver slot 45 to the left and with institute
45 left end wall of driver slot is stated rotatably to be cooperatively connected, it is fixed on two driving threaded rods 44 in the driver slot 45 to pacify
Equipped with pinion 49, insertion is provided with driving motor 46 among the 45 left end wall of driver slot, and 46 right end of driving motor is dynamic
Power is connected with drive shaft 50, is symmetrically set with master gear 47 in the drive shaft 50, each master gear 47 with it is corresponding
The pinion 49 between be connected with chain 48,9 right end of substrate is described to cover in being symmetrically arranged with up and down
The covering component of sliding slot 14.
Wherein, the heating lamp 4 is located at 5 left side of insulation indicator lamp, and the water level sensor 7 is located at the temperature
8 top of sensor is spent, the control button 11 is located at 12 right side of display screen.
Wherein, the master gear 47 is identical as 49 diameter of pinion, the master gear 47 in left side in upper institute
The pinion 49 stated on driving threaded rod 44 is oppositely arranged, the master gear 47 on right side and the driving threaded rod 44 under
On pinion 49 be oppositely arranged, 50 right end of drive shaft is rotatably cooperatively connected with the 45 right end wall of driver slot, described
Driving 44 right end of threaded rod is rotatably cooperatively connected with the 14 right end wall of sliding slot.
Wherein, the covering component includes cylinder 41 and is arranged in the cylinder 41 and is open towards left inside groove 42,
Roller blind 43 is collapsibly provided in the inside groove 42, the roller blind 43 has tensile elasticity, 43 left end of roller blind
It is fixedly connected with 13 right side of protective cover, 43 right end of roller blind is fixedly connected with the 42 right end wall of inside groove, described
Roller blind 43 can be with the horizontally slipping for protective cover 13 and left and right stretches.
Wherein, the width of the roller blind 43 is greater than the width of the sliding slot 14.
Wherein, the water level sensor 7 and the temperature sensor 8 are respectively protruding into the water tank 2 and are detected, institute
It states water level sensor 7 and the temperature sensor 8 is electrically connected with control node microprocessor 24, the micro- place of control node
Reason device 24 is electrically connected by the solenoid valve 19 with the water tank 2, and the control node microprocessor 24 transmits mould by data
Block 25, data conversion module 26 and display module 28 are electrically connected with the display screen 12, and the data transmission module 25 passes through ratio
It is electrically connected compared with circuit 27 with the heating lamp 4 and the insulation indicator lamp 5, the 2 front end face upper right quarter of water tank is equipped with
Pressure gauge 6.
A kind of application method of water heater control system, in use, water level sensor 7 and temperature by being installed on water tank 2
Sensor 8 is spent by the real-time Data Transmission detected in water tank 2 to control node microprocessor 24, and control node microprocessor 24 is controlled
The starting of solenoid valve 19 and closing processed open and close to control hot water outlet 17 and cooling water inlet 18, and then in regulating tank 2
Water temperature, while control node microprocessor 24 will collect water level number by data transmission module 25 and data conversion module 26
According to display module 28 and comparison circuit 27 is transferred to respectively with temperature data, data are shown to display screen 12 by display module 28
On, comparison circuit 27 starts according to setting Numerical Control heating lamp 4 and insulation indicator lamp 5, and the setting of 12 front end of display screen is slided
Dynamic protective cover 13, horizontally slipping for protective cover 13 are worked by control driving motor 46, the driving of 46 task driven of driving motor
Axis 50 rotates, and the rotation of drive shaft 50 drives master gear 47 to rotate, and 47 rotate driving of master gear drives pinion 49 by chain 48
Rotation, the rotation of pinion 49 drive driving threaded rod 44 to rotate, and driving 44 rotate driving of threaded rod sliding 40 horizontally slips, and slide
40 horizontally slip that protective cover 13 is driven to horizontally slip, so as to protect to display screen 12, after protective cover 13
The demisting pad 21 installed on end face can remove the fog and dust on 12 surface of display screen.
The beneficial effects of the present invention are:
1. the water level sensor and temperature sensor by installing on water tank are by the real-time Data Transmission detected in water tank to control
Node microprocessor, the starting of control node microprocessor controls solenoid valves and closes to control hot water outlet and cooling water inlet is beaten
It is open and close, and then the water temperature in regulating tank, while control node microprocessor passes through data transmission module and data conversion
Module will collect waterlevel data and temperature data is transferred to display module and comparison circuit respectively, and display module shows data
Onto display screen, comparison circuit starts according to setting Numerical Control heating lamp and insulation indicator lamp, to realize the present invention
The work of device.
2. protective cover horizontally slips by controlling driving motor work by the protective cover in the setting sliding of display screen front end
Make, driving motor task driven drive shaft turns, drive shaft turns drive master gear rotation, and master gear rotate driving passes through chain
Pinion rotation is driven, pinion rotation drives driving threaded rod rotation, and driving threaded rod rotate driving sliding horizontally slips, sliding
It is dynamic to horizontally slip that protective cover is driven to horizontally slip, so as to be protected to display screen, protection cap surface setting observation
Window can be visually seen the content of display screen display through observation window, while not influencing display screen phenomenon effect, significantly
The display screen of protection itself；And the automatic sliding of protective cover is realized, avoid manual hand manipulation.
3. the fog and dust of display screen surface can be removed by the demisting pad installed on protective cover rear end face, anti-
During protecting cover horizontally slips, demisting pad and display screen friction so that defogging effect is good, and are led between demisting pad and protective cover
Soft connector connection is crossed, disassembly, replacement are convenient, can prevent dust from entering in sliding slot by roller blind, so that the present apparatus is run
Safety and stability, it is easy to operate, the aesthetics of water heater will not be influenced, water heater is easy to use.
The basic principles, main features and advantages of the present invention have been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, various changes and improvements may be made to the invention without departing from the spirit and scope of the present invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent defines.
Claims (7)
1. a kind of water heater control system, including water heater body, which is characterized in that the water heater body include water tank and
Control device among the water tank front end face is set, and the water tank front end face upper left quarter is provided with heating lamp and heat preservation
Indicator light, water tank right end top are equipped with water level sensor and temperature sensor, and the water tank bottom is equipped with pedestal, institute
It states and is symmetrically installed with hot water outlet and cooling water inlet at left and right sides of base bottom, on the hot water outlet and the cooling water inlet
Solenoid valve is installed, the control device includes the substrate being fixedly connected with the water tank, is provided on the substrate front end face
Plate is manipulated, is provided with control button and display screen on the manipulation front edge of board face, the two sides up and down of the substrate front end face are symmetrical
It is provided with the sliding slot that left and right extends, the manipulation front edge of board position is provided with the protective cover that can be horizontally slipped, in the protective cover
It is provided with observation window, the protective cover front end face, which is located on the right side of the observation window, is provided with catching groove, the protective cover rear end face
The left and right sides is symmetrically arranged with slot, and the left and right sides of protective cover rear end face is also symmetrically arranged with demisting pad, and the demisting pad is logical
It crosses soft connector to be detachably connected with the slot, the right side of the protective cover rear end face is inserted into pair in being symmetrically arranged with up and down
The sliding block being slidably connected in the sliding slot answered with the sliding slot is communicated in the substrate between two sliding slot left ends
Driver slot, left and right, which is extended, in the sliding slot the driving screw thread that connection is threadedly engaged through the sliding block and with the sliding block
Bar, the driving threaded rod left end extend in the driver slot to the left and rotatably cooperate company with driver slot left end wall
It connects, is fixedly installed with pinion in the driver slot on two driving threaded rods, among the wall of the driver slot left end
Insertion is provided with driving motor, and the driving motor right end has been connected by power drive shaft, has been symmetrical set in the drive shaft
There is master gear, chain is connected between each master gear and the corresponding pinion, the substrate right end is presented
Under be symmetrically arranged with covering component to cover the sliding slot.
2. a kind of water heater control system according to claim 1, which is characterized in that the heating lamp is located at described
On the left of insulation indicator lamp, the water level sensor is located above the temperature sensor, and the control button is located at the display
Screen right side.
3. a kind of water heater control system according to claim 1, which is characterized in that the master gear and the pinion
Diameter is identical, and the master gear in left side is oppositely arranged with the pinion on the upper driving threaded rod, right side it is described
Master gear is oppositely arranged with the pinion on the driving threaded rod under, the drive shaft right end and the driver slot right end
Wall is rotatably cooperatively connected, and the driving threaded rod right end is rotatably cooperatively connected with the sliding slot right end wall.
4. a kind of water heater control system according to claim 1, which is characterized in that the covering component include cylinder with
And be arranged in the cylinder and opening is towards left inside groove, roller blind, the roller blind are collapsibly provided in the inside groove
With tensile elasticity, the roller blind left end is fixedly connected with the protective cover right side, the roller blind right end with it is described interior
Slot right end wall is fixedly connected, and the roller blind can be with the horizontally slipping for protective cover and left and right stretches.
5. a kind of water heater control system according to claim 4, which is characterized in that the width of the roller blind is greater than institute
State the width of sliding slot.
6. a kind of water heater control system according to claim 1, which is characterized in that the water level sensor and the temperature
Degree sensor, which is respectively protruding into the water tank, to be detected, and the water level sensor and the temperature sensor are electrically connected
There is control node microprocessor, the control node microprocessor is electrically connected by the solenoid valve with the water tank, the control
Node microprocessor processed is electrically connected by data transmission module, data conversion module and display module with the display screen, described
Data transmission module is electrically connected by comparing circuit with the heating lamp and the insulation indicator lamp, the water tank front end face
Upper right quarter is equipped with pressure gauge.
7. a kind of application method of water heater control system described in -6 according to claim 1, which is characterized in that in use, logical
It crosses the water level sensor installed on water tank and temperature sensor and gives control node micro- place the real-time Data Transmission detected in water tank
It manages device, the starting of control node microprocessor controls solenoid valves and closes to control hot water outlet and cooling water inlet beats on and off
It closes, and then the water temperature in regulating tank, while control node microprocessor passes through data transmission module and data conversion module will
It collects waterlevel data and temperature data is transferred to display module and comparison circuit respectively, data are shown to display by display module
On screen, comparison circuit starts according to setting Numerical Control heating lamp and insulation indicator lamp, the setting sliding of display screen front end
Protective cover, protective cover horizontally slip through control driving motor work, driving motor task driven drive shaft turns, drive shaft
Rotation drives master gear rotation, and master gear rotate driving is rotated by chain drive pinion, and pinion rotation drives driving spiral shell
Rasp bar rotation, driving threaded rod rotate driving sliding horizontally slip, and sliding horizontally slips that protective cover is driven to horizontally slip, from
And display screen can be protected, by the demisting pad installed on protective cover rear end face, the mist of display screen surface can be removed
Gas and dust.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810766241.5A CN109000376A (en) | 2018-07-12 | 2018-07-12 | water heater control system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810766241.5A CN109000376A (en) | 2018-07-12 | 2018-07-12 | water heater control system and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109000376A true CN109000376A (en) | 2018-12-14 |
Family
ID=64599237
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810766241.5A Withdrawn CN109000376A (en) | 2018-07-12 | 2018-07-12 | water heater control system and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109000376A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111981678A (en) * | 2019-05-24 | 2020-11-24 | 青岛佰腾科技有限公司 | Water heater with water level adjustment function |
-
2018
- 2018-07-12 CN CN201810766241.5A patent/CN109000376A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111981678A (en) * | 2019-05-24 | 2020-11-24 | 青岛佰腾科技有限公司 | Water heater with water level adjustment function |
| CN111981678B (en) * | 2019-05-24 | 2021-07-23 | 青岛佰腾科技有限公司 | Water heater with water level adjustment function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20181214 |
|
| WW01 | Invention patent application withdrawn after publication |