CN111121284A - Automatic heating dry-burning-resistant water heater - Google Patents
Automatic heating dry-burning-resistant water heater Download PDFInfo
- Publication number
- CN111121284A CN111121284A CN202010080088.8A CN202010080088A CN111121284A CN 111121284 A CN111121284 A CN 111121284A CN 202010080088 A CN202010080088 A CN 202010080088A CN 111121284 A CN111121284 A CN 111121284A
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- Prior art keywords
- water
- rotating shaft
- cavity
- heating
- current protection
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- 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.)
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
- F24H1/18—Water-storage heaters
- F24H1/20—Water-storage heaters with immersed heating elements, e.g. electric elements or furnace tubes
- F24H1/201—Water-storage heaters with immersed heating elements, e.g. electric elements or furnace tubes using electric energy supply
- F24H1/202—Water-storage heaters with immersed heating elements, e.g. electric elements or furnace tubes using electric energy supply with resistances
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/20—Arrangement or mounting of control or safety devices
- F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
- F24H9/2014—Arrangement or mounting of control or safety devices for water heaters using electrical energy supply
- F24H9/2021—Storage heaters
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
The invention discloses an automatic heating dry-burning-preventing water heater, which comprises a water tank, wherein a circuit protection device, an automatic water adding device and a heating device are arranged in the water tank; the circuit protection device comprises a water level sensor fixedly arranged in the left side wall of the water storage cavity, the water level sensor is connected with a motor circuit, the motor is fixedly arranged in a water tank on the left side of the water storage cavity, a containing cavity is arranged in the water tank on the lower side of the motor, and a first rotating shaft is arranged on the lower side of the motor.
Description
Technical Field
The invention relates to the technical field of electric related protection devices, in particular to an automatic heating dry-burning-preventing water heater.
Background
The water heater is popular with the users due to the characteristics of quick water heating, convenient temperature adjustment, no harmful gas generation by electric heating and the like. However, when electric water is used, the water-free dry burning and current short circuit are easy to occur, which causes fire and explosion. Therefore, the hot water product needs to be provided with a dry burning prevention and power-off leakage protection device. The present invention sets forth a device that solves the above problems.
Disclosure of Invention
The invention aims to provide an automatic heating dry-heating-preventing water heater, which is used for overcoming the defects in the prior art.
The embodiment designs an electric water heater capable of automatically adding water and preventing dry burning, which comprises a water tank, wherein a water storage cavity is arranged in the water tank, and an automatic water adding device, a circuit protection device and a heating device are arranged in the water tank;
the circuit protection device comprises a water level sensor fixedly arranged in the left side wall of the water storage cavity, the water level sensor is connected with a motor circuit, the motor is fixedly arranged in the water tank at the left side of the water storage cavity, an accommodating cavity is arranged in the water tank on the lower side of the motor, a first rotating shaft is arranged on the lower side of the motor, the first rotating shaft extends downwards into the accommodating cavity, the tail end of the lower side of the first rotating shaft is fixedly provided with a first bevel gear, the first bevel gear is engaged with a second bevel gear, the rear side of the second bevel gear is connected with a second rotating shaft, the second rotating shaft is rotatably arranged on the rear side wall of the cavity and is also provided with a driving wheel, the driving wheel is connected with the driven wheel through a belt, the driven wheel is arranged on a third rotating shaft which is rotatably arranged on the rear side wall of the cavity, the belt is provided with a first current protection switch and a second current protection switch which automatically cut off a power supply to prevent dry burning when water is low;
heating device includes the temperature sensor of fixed mounting in water storage chamber left side wall, temperature sensor and block terminal circuit connection, block terminal fixed mounting in the left water tank in water storage chamber, the water storage intracavity is connected with the electrothermal tube, temperature sensor with be equipped with fixed mounting between the block terminal in the temperature control switch of accessible temperature control electrothermal tube heating state on the water storage chamber left side wall.
On the basis of the technical scheme, first current protection switch includes the first fixed block of fixed mounting on the belt right side, fixed mounting has the current sensor who surveys the electric current on the first fixed block, current sensor and power supply circuit connection, be equipped with the electro-magnet on the power, there is the hinge connection in the electro-magnet top armature on the first current protection switch, armature hinge connection is in the pole, the first stock of pole hinge connection below, first stock hinge connection is in first fixed block left side, first stock left side lower extreme fixed mounting has the metal contact.
On the basis of the technical scheme, the second current protection switch comprises a second fixed block fixedly mounted on the left side of the belt, a second long rod fixedly connected with the right side of the second fixed block is arranged, a conductive contact vertically opposite to the metal contact is arranged above the right end of the second long rod, when the water level drops to a certain degree, the water level sensor sends a signal, the motor is started to drive a first rotating shaft to rotate, the first rotating shaft drives a first bevel gear at the tail of the lower end to rotate, the first bevel gear drives a second rotating shaft to rotate, the second rotating shaft drives a driving wheel to rotate, and meanwhile, the first current protection switch and the second current protection switch arranged on the belt are separated along with the rotation of the belt, so that a circuit is disconnected, the power supply is automatically disconnected when water is low, and dry burning is prevented;
on the basis of the technical scheme, the temperature control switch comprises a motor arranged on the left side wall of a water storage cavity, a rotating cavity is arranged on the left side of the motor, the left side of the motor is connected with a fourth rotating shaft extending into the rotating cavity, a first gear is arranged on the fourth rotating shaft, the first gear is meshed with a rack, the rack is slidably mounted in the rotating cavity, an insulating contact is arranged at the tail end of one side, away from the first gear, of the rack, a metal sheet is arranged on the insulating contact and is in circuit connection with an electric conductor, the electric conductor enables the metal sheets on the upper side and the lower side to be communicated with a power supply, the electric conductor is fixedly mounted in the rotating cavity, one side, away from the first gear, of the metal sheet can be in contact with an electric contact, and the electric contact is;
on the basis of the technical scheme, the first current protection switch 105 and the second current protection switch 106 are connected with the electrical contact 32 and the metal sheet 38 in series, so that when the first current protection switch 105 and the second current protection switch 106 are disconnected, the electric heating pipe 7 can be controlled to be powered off to stop heating water
On the basis of the technical scheme, the automatic water adding device comprises a cavity arranged inside the upper side of the water tank, the lower side wall of the cavity is rotatably connected with a fifth rotating shaft, the upper side of the fifth rotating shaft is connected with a third bevel gear, the third bevel gear is meshed with a fourth bevel gear, the rear side of the fourth bevel gear is connected with a sixth rotating shaft, the sixth rotating shaft is rotatably installed on the rear side wall of the cavity, the sixth rotating shaft is further connected with a second gear, the first gear is meshed with a long rack, the long rack is slidably installed in a switch cavity, the upper side of the long rack is connected with a switch valve arranged in the switch cavity, the switch cavity is arranged in the water tank, the switch cavity is connected with a water inlet pipe, and the water inlet pipe extends into the water storage cavity from the outer side of the water tank.
On the basis of the technical scheme, a pressure release valve is arranged on the upper side of the water storage cavity, the pressure release valve can discharge water vapor in the heating process to prevent explosion caused by expansion and contraction of heat and cold of air, a water outlet is additionally arranged in the water storage cavity and is connected with a water outlet pipe, and a water faucet is mounted on the water outlet pipe to control water to flow out.
The invention has the beneficial effects that: according to the invention, the water level sensor is used for controlling the motor to start and provide power to control the on-off of the valve and the first current protection switch and the second current protection switch, so that the situation that no water is dried during the operation of the water heater is ensured, meanwhile, the current sensor is arranged on the first current protection switch, when the current is overlarge, the first current protection switch and the second current protection switch are disconnected through the electromagnet on the switch, the short circuit of a circuit is avoided, the temperature control switch is arranged in the distribution box, the motor is controlled to start through the water temperature sensor to realize the control of the working situation of the heating pipe, and the constant temperature in the water storage cavity is effectively ensured.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic view of the overall structure of an automatic water-adding dry-heating preventing water heater of the present invention;
FIG. 2 is a cross-sectional view A-A of FIG. 1;
FIG. 3 is a cross-sectional view B-B of FIG. 1;
fig. 4 is an enlarged schematic diagram of the first current protection switch in fig. 1;
fig. 5 is an enlarged structural schematic diagram of the second current protection switch in fig. 1;
FIG. 6 is an enlarged schematic view of the temperature control switch of FIG. 1;
fig. 7 is a cross-sectional view of C-C in fig. 6.
Detailed Description
The invention will now be described in detail with reference to fig. 1-7, for convenience of description, the following orientations will now be defined: the up, down, left, right, and front-back directions described below correspond to the up, down, left, right, and front-back directions in the projection relationship of fig. 1 itself.
Referring to fig. 1-7, an automatic heating dry-heating prevention water heater according to an embodiment of the present invention includes a water tank 1, a water storage cavity 2 is disposed in the water tank 1, and an automatic water adding device 101, a circuit protection device 102 and a heating device 103 are disposed in the water tank 1;
the circuit protection device 102 comprises a water level sensor 11 fixedly installed in the left side wall of the water storage cavity 2, the water level sensor 11 is in circuit connection with a motor 10, the motor 10 is fixedly installed in the left side water tank 1 of the water storage cavity 2, a containing cavity 43 is arranged in the water tank 1 of the water tank 1 at the lower side of the motor 10, a first rotating shaft 12 is arranged at the lower side of the motor 10, the first rotating shaft 12 extends downwards into the containing cavity 43, a first bevel gear 17 is fixedly arranged at the tail end of the lower side of the first rotating shaft, the first bevel gear 17 is meshed with a second bevel gear 18, a second rotating shaft 47 is connected to the rear side of the second bevel gear 18, the second rotating shaft 47 is rotatably installed on the rear side wall of the cavity 43, a driving wheel 19 is further arranged on the second rotating shaft 47, the driving wheel 19 is connected with a driven wheel 20 through a belt 21, the driven wheel 20 is, a first current protection switch 105 and a second current protection switch 106 which automatically cut off the power supply to prevent dry burning when water is low are arranged on the belt 21;
In addition, in one embodiment, the first current protection switch 105 includes a first fixed block 28 fixedly installed on the right side of the belt 21, a current sensor 22 for detecting current is fixedly installed on the first fixed block 28, the current sensor 22 is electrically connected to the power supply 23, an electromagnet 24 is installed on the power supply 22, an armature 25 hinged to the first current protection switch 105 is installed above the electromagnet 24, the armature 25 is hinged to a rod 26, the rod 26 is hinged to a first long rod 27 below, the first long rod 27 is hinged to the left side of the first fixed block 28, and a metal contact 29 is fixedly installed at the left lower end of the first long rod 27.
In addition, in one embodiment, the second current protection switch 106 includes a second fixed block 50 fixedly installed on the left side of the belt 21, a second long rod 51 fixedly connected to the right side of the second fixed block 50 is provided, a conductive contact 52 vertically opposite to the metal contact 29 is provided above the right end of the second long rod 51, when the water level drops to a certain extent, the water level sensor 11 sends a signal, the motor 10 is started to drive the first rotating shaft 12 to rotate, the first rotating shaft 12 drives the first bevel gear 17 at the end of the lower end to rotate, the first bevel gear 17 drives the second rotating shaft 47 to rotate, the second rotating shaft 47 drives the driving wheel 19 to rotate, and simultaneously the first current protection switch 105 and the second current protection switch 106 provided on the belt 21 are separated along with the rotation of the belt, so as to break the circuit, and ensure that the power supply is automatically cut off when the water level is low, dry burning is prevented; when the current is too large, the current sensor 22 on the first current protection switch 105 sends out a signal, the electromagnet 24 conducts electricity, the electromagnet 24 attracts the armature 25 arranged above, and when the current is too large, the first current protection switch 105 and the second current protection switch 106 are disconnected;
in addition, in one embodiment, the temperature control switch 104 includes a motor 48 disposed on the left side wall of the water storage cavity 2, a rotation cavity 42 is disposed on the left side of the motor 48, a fourth rotation shaft 44 extending into the rotation cavity 42 is connected to the left side of the motor 48, a first gear 31 is disposed on the fourth rotation shaft 44, the first gear 31 is engaged with a rack 30, the rack 30 is slidably mounted in the rotation cavity 42, an insulating contact 39 is disposed at a terminal of one side of the rack 30 away from the first gear 31, a metal sheet 38 is disposed on the insulating contact 39, the metal sheet 38 is electrically connected with an electrical conductor 40, the electrical conductor 40 enables power supply communication between the metal sheets 38 on the upper and lower sides, the electrical conductor 40 is fixedly mounted in the rotation cavity 42, and an electrical contact 32 is disposed on one side of the metal sheet 38 away from the first gear 31, the electrical contact 32 is electrically connected with the electrical heating tube 7, when the temperature sensor 33 detects that the temperature of the water is lower than a set value, the motor 48 is started to drive the fourth rotating shaft 44 to rotate, the fourth rotating shaft 44 drives the first gear 31 to rotate, the first gear 31 drives the rack 30 to move downwards, so that the metal sheet 38 on the rack 30 contacts with the electrical contact 32 to complete a circuit, and the electrical heating tube 7 starts to heat the water.
In addition, in one embodiment, the first current protection switch 105 and the second current protection switch 106 are connected in series with the electrical contact 32 and the metal sheet 38, so that when the first current protection switch 105 and the second current protection switch 106 are opened, the electrical heating tube 7 can be controlled to be powered off to stop heating the water.
In addition, in one embodiment, the automatic water adding device 101 comprises a cavity 41 arranged inside the upper side of the water tank 1, a fifth rotating shaft 37 is rotatably connected to the lower side wall of the cavity 41, a third bevel gear 13 is connected to the upper side of the fifth rotating shaft 37, the third bevel gear 13 is engaged with a fourth bevel gear 14, the rear side of the fourth bevel gear 14 is connected with a sixth rotating shaft 46, the sixth rotating shaft 46 is rotatably mounted on the rear side wall of the cavity 41, the second gear 16 is further connected to the sixth rotating shaft 46, the first gear 16 is engaged with the long rack 15, the long rack 15 is slidably mounted in the switch cavity 35, the upper side of the long rack 15 is connected with a switch valve 9 arranged in the switch cavity 35, the switch cavity 35 is arranged in the water tank 1, the switch chamber 35 is connected with a water inlet pipe 8, and the water inlet pipe 8 extends into the water storage chamber 2 from the outer side of the water tank 1.
In addition, in an embodiment, a pressure release valve 34 is disposed on an upper side of the water storage cavity 2, the pressure release valve 34 can discharge water vapor in a heating process to prevent explosion caused by expansion and contraction of air, a water outlet 5 is further disposed on the water storage cavity 2, the water outlet 5 is connected to a water outlet pipe 4, and a faucet 3 is mounted on the water outlet pipe 4 to control water to flow out.
In the initial state, the valve 9 is closed, the first current protection switch 105 is in contact with the second current protection switch 106, and the circuit is closed;
when the water level sensor 11 detects that the water level in the water storage cavity 2 is lower than a set value, the motor 10 starts the control valve 9 to be opened, so that water enters the water storage cavity 2 through the water inlet pipe 8;
when the motor 10 controls the valve 9 to be opened, the motor 10 can drive the first rotating shaft 12 to rotate, the first rotating shaft 12 drives the first bevel gear 17 at the tail of the lower end to rotate, the first bevel gear 17 drives the second rotating shaft 47 to rotate, the second rotating shaft 47 drives the driving wheel 19 to rotate, and meanwhile, the first current protection switch 105 and the second current protection switch 106 arranged on the belt 21 are separated along with the rotation of the belt, so that the circuit is disconnected and the water heating is stopped;
when the water level sensor 11 detects that the water level in the water storage cavity 2 reaches a set value, the motor 10 rotates reversely, the valve 9 is closed, the first current protection switch 105 and the second current protection switch 106 are contacted again, and the circuit connection starts to heat water;
when the water temperature drops and the temperature sensor 33 detects that the water temperature is lower than a set value, the motor 48 is started to drive the fourth rotating shaft 44 to rotate, the fourth rotating shaft 44 drives the first gear 31 to rotate, the first gear 31 drives the rack 30 to move downwards, so that the metal sheet 38 on the rack 30 contacts with the electrical contact 32 to complete a circuit to start heating the water;
when the water temperature is heated to a certain degree, the temperature sensor 33 starts the motor 48 to drive the fourth rotating shaft 44 to rotate reversely, the fourth rotating shaft 44 drives the first gear 31, the first gear 31 drives the rack 30 to move upwards, and the metal sheet 38 on the rack 30 and the electrical contact 32 are separated to close the circuit;
when the current is too large, the current sensor 22 on the first current protection switch 105 sends a signal, the electromagnet 24 conducts electricity, the electromagnet 24 attracts the armature 25 arranged above, and when the current is too large, the first current protection switch 105 and the second current protection switch 106 are disconnected to stop heating the water.
The invention has the beneficial effects that: according to the invention, the water level sensor is used for controlling the motor to start and provide power to control the on-off of the valve and the first current protection switch and the second current protection switch, so that the situation that no water is dried during the operation of the water heater is ensured, meanwhile, the current sensor is arranged on the first current protection switch, when the current is overlarge, the first current protection switch and the second current protection switch are disconnected through the electromagnet on the switch, the short circuit of a circuit is avoided, the temperature control switch is arranged in the distribution box, the motor is controlled to start through the water temperature sensor to realize the control of the working situation of the heating pipe, and the constant temperature in the water storage cavity is effectively ensured.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (7)
1. The utility model provides an automatic heating prevents dry combustion method water heater, includes the water tank, its characterized in that: a circuit protection device, an automatic water adding device and a heating device are arranged in the water tank;
the circuit protection device comprises a water level sensor fixedly arranged in the left side wall of the water storage cavity, the water level sensor is connected with a motor circuit, the motor is fixedly arranged in the water tank at the left side of the water storage cavity, an accommodating cavity is arranged in the water tank on the lower side of the motor, a first rotating shaft is arranged on the lower side of the motor, the first rotating shaft extends downwards into the accommodating cavity, the tail end of the lower side of the first rotating shaft is fixedly provided with a first bevel gear, the first bevel gear is engaged with a second bevel gear, the rear side of the second bevel gear is connected with a second rotating shaft, the second rotating shaft is rotatably arranged on the rear side wall of the cavity and is also provided with a driving wheel, the driving wheel is connected with the driven wheel through a belt, the driven wheel is arranged on a third rotating shaft which is rotatably arranged on the rear side wall of the cavity, the belt is provided with a first current protection switch and a second current protection switch which automatically cut off a power supply to prevent dry burning when water is low;
heating device includes the temperature sensor of fixed mounting in water storage chamber left side wall, temperature sensor and block terminal circuit connection, block terminal fixed mounting in the left water tank in water storage chamber, the water storage intracavity is connected with the electrothermal tube, temperature sensor with be equipped with fixed mounting between the block terminal in the temperature control switch of accessible temperature control electrothermal tube heating state on the water storage chamber left side wall.
2. The automatic heating dry-heating preventing water heater according to claim 1, characterized in that: first current protection switch includes the first fixed block of fixed mounting on belt right side, fixed mounting has the current sensor who surveys electric current on the first fixed block, current sensor and power circuit connection, be equipped with the electro-magnet on the power, there is the hinge to connect in the electro-magnet top armature on the first current protection switch, the armature hinge connects in the pole, the first stock of pole hinge connection below, first stock hinge connection is on the left of the first fixed block, first stock left side lower extreme fixed mounting has the metal contact.
3. The automatic heating dry-heating preventing water heater according to claim 1, characterized in that: the second current protection switch comprises a second fixed block fixedly mounted on the left side of the belt, a second long rod fixedly connected with the right side of the second fixed block is arranged, a conductive contact vertically opposite to the metal contact is arranged above the right end of the second long rod, when the water level drops to a certain degree, the water level sensor sends a signal, the motor is started to drive the first rotating shaft to rotate, the first rotating shaft drives the first bevel gear at the tail of the lower end to rotate, the first bevel gear drives the second rotating shaft to rotate, the second rotating shaft drives the driving wheel to rotate, and meanwhile, the first current protection switch and the second current protection switch arranged on the belt are separated along with the rotation of the belt, so that a circuit is disconnected, the power supply is automatically disconnected when water is in shortage, and dry burning is prevented.
4. The automatic heating dry-heating preventing water heater according to claim 1, characterized in that: temperature control switch is including setting up the motor on water storage chamber left side wall, the motor left side is equipped with rotates the chamber, the motor left side is connected with and stretches into rotate the fourth axis of rotation of intracavity, be equipped with first gear in the fourth axis of rotation, first gear and rack toothing, rack slidable mounting in rotate the intracavity, the rack is kept away from one side end of first gear is equipped with insulating contact, be equipped with the sheetmetal on the insulating contact, sheetmetal and electric conductor circuit connection, both sides about the electric conductor makes can feed through the power between the sheetmetal, electric conductor fixed mounting rotates the intracavity, the sheetmetal is kept away from one side of first gear can contact be equipped with the electrical contact, the electrical contact is connected with the electrothermal tube electricity.
5. The automatic heating dry-heating preventing water heater according to claim 1, characterized in that: the first current protection switch 105 and the second current protection switch 106 are connected with the electrical contact 32 and the metal sheet 38 in series, so that when the first current protection switch 105 and the second current protection switch 106 are disconnected, the electric heating pipe 7 can be controlled to be powered off to stop heating the water.
6. The automatic heating dry-heating preventing water heater according to claim 1, characterized in that: the automatic water adding device comprises a cavity arranged inside the upper side of the water tank, a fifth rotating shaft is rotatably connected to the lower side wall of the cavity, a third bevel gear is connected to the upper side of the fifth rotating shaft, the third bevel gear is meshed with a fourth bevel gear, a sixth rotating shaft is connected to the rear side of the fourth bevel gear, the sixth rotating shaft is rotatably installed on the rear side wall of the cavity, a second gear is further connected to the sixth rotating shaft, a long rack is meshed with the first gear, the long rack is slidably installed in a switch cavity, the upper side of the long rack is connected with a switch valve arranged in the switch cavity, the switch cavity is arranged in the water tank, a water inlet pipe is connected to the switch cavity, and the water inlet pipe extends into the water storage cavity from the outer side of the water tank.
7. The automatic heating dry-heating preventing water heater according to claim 1, characterized in that: the water storage cavity is provided with a water outlet, the water outlet is connected with a water outlet pipe, and the water outlet pipe is provided with a faucet for controlling water to flow out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010080088.8A CN111121284A (en) | 2020-02-04 | 2020-02-04 | Automatic heating dry-burning-resistant water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010080088.8A CN111121284A (en) | 2020-02-04 | 2020-02-04 | Automatic heating dry-burning-resistant water heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111121284A true CN111121284A (en) | 2020-05-08 |
Family
ID=70491904
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010080088.8A Withdrawn CN111121284A (en) | 2020-02-04 | 2020-02-04 | Automatic heating dry-burning-resistant water heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111121284A (en) |
-
2020
- 2020-02-04 CN CN202010080088.8A patent/CN111121284A/en not_active Withdrawn
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Application publication date: 20200508 |