CN210128519U - Water heater control circuit and water heater - Google Patents
Water heater control circuit and water heater Download PDFInfo
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- CN210128519U CN210128519U CN201920991689.7U CN201920991689U CN210128519U CN 210128519 U CN210128519 U CN 210128519U CN 201920991689 U CN201920991689 U CN 201920991689U CN 210128519 U CN210128519 U CN 210128519U
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Abstract
The utility model discloses a water heater control circuit and water heater, wherein, the water heater control circuit includes alternating current power end, direct current power end, control circuit, induction circuit and heating device, and induction circuit includes microwave induction circuit and luminance induction circuit, the utility model discloses water heater control circuit when detecting human body and moving, indicates that the user is in the active state promptly, can automatic control the heating device work of water heater, makes things convenient for the user to use; under the condition of detecting night (light brightness is dark), the heating device can be controlled to automatically stop working, the purpose of saving energy is achieved, and the reliability of the intelligent degree of the water heater is improved.
Description
Technical Field
The utility model relates to a water heater technical field, in particular to water heater control circuit and water heater.
Background
The common water heater is mainly turned on and turned off through manual operation, is convenient and intelligent not enough, generally can not cut off the power supply under the condition that the water heater does not use in addition, and has the problems of redundant energy consumption and influence on the service life of the water heater.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a water heater control circuit aims at improving the reliability of water heater.
In order to achieve the above object, the utility model provides a water heater control circuit includes: the device comprises an alternating current power supply end, a direct current power supply end, a control circuit, an induction circuit and a heating device;
the alternating current power supply end is connected with the power supply end of the heating device, the power supply end of the direct current power supply end is respectively connected with the control circuit and the induction circuit, the signal end of the control circuit is connected with the signal end of the induction circuit, and the control end of the control circuit is connected with the controlled end of the heating device;
the induction circuit comprises a microwave induction circuit and a brightness induction circuit;
the microwave induction circuit is used for detecting a human body movement signal within a preset range and outputting a microwave induction signal to the control circuit when the human body movement signal is detected;
the brightness sensing circuit is used for detecting the light brightness of the environment and outputting a brightness sensing signal to the control circuit;
the control circuit is used for controlling the heating device to work when receiving the human body movement signal of the microwave induction circuit, and controlling the heating device to stop working when the brightness induction signal is smaller than the preset brightness signal.
Preferably, the water heater control circuit further comprises a power conversion circuit, and the power conversion circuit is connected between the alternating current power input end and the direct current power end;
and the power supply conversion circuit is used for converting the alternating current power supply input by the alternating current power supply input end into a direct current power supply and outputting the direct current power supply to the direct current power supply end.
Preferably, the water heater control circuit further comprises a display device, and a signal end of the display device is connected with the control circuit;
the control circuit is further used for controlling the display device to work when the microwave induction circuit detects a human body movement signal, and controlling the display device to stop working when the brightness induction signal is smaller than a preset brightness signal.
Preferably, the water heater control circuit further comprises a voltage detection circuit, a detection end of the voltage detection circuit is connected with the alternating current power supply end, and a signal end of the voltage detection circuit is connected with a signal end of the control circuit;
the voltage detection circuit is used for detecting the voltage of the alternating current power supply end and correspondingly outputting a voltage detection signal to the control circuit.
Preferably, the microwave sensing circuit includes an antenna, a first resistor, a second resistor, a third resistor, a first capacitor, a second capacitor, a third capacitor, a first NPN triode, and a sensing chip;
the first end of the first resistor, the first end of the first capacitor, the power end of the sense chip and the direct current power end of the collector of the first NPN triode are interconnected, the second end of the first resistor, the first end of the second capacitor and the second end of the second resistor are interconnected, the second end of the second resistor, the signal end of the antenna, the base of the first NPN triode and the first end of the third resistor are interconnected, the emitter of the first NPN triode, the first end of the third capacitor and the signal end of the sense chip are interconnected, and the second end of the first capacitor, the second end of the second capacitor, the second end of the third resistor and the ground end of the sense chip are all grounded.
Preferably, the brightness sensing circuit comprises a light dependent resistor, a first end of the light dependent resistor is grounded, and a second end of the light dependent resistor is connected with the signal end of the control circuit.
Preferably, the sensing circuit further comprises a signal amplifying circuit, a signal input end of the signal amplifying circuit is connected with a signal end of the microwave sensing circuit, a signal output end of the amplifying circuit is connected with a signal end of the control circuit, and the signal amplifying circuit is used for performing signal amplification on the microwave sensing signal.
Preferably, the signal amplification circuit comprises a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, a second NPN triode and a PNP triode;
the base electrode of the second NPN triode, the first end of the fourth resistor and the signal end of the microwave sensing circuit are interconnected, the emitter electrode of the second NPN triode and the second end of the fourth resistor are both grounded, the collector electrode of the second NPN triode is connected with the first end of the fifth resistor, the second end of the fifth resistor, the first end of the sixth resistor and the base electrode of the PNP triode are interconnected, the second end of the sixth resistor, the emitter electrode of the PNP triode and the direct current power source end are interconnected, the collector electrode of the PNP triode is connected with the first end of the seventh resistor, the connection node of the PNP triode is the signal output end of the signal amplification circuit, and the second end of the seventh resistor is grounded.
Preferably, the sensing circuit further includes an indication circuit, a signal end of the indication circuit is connected to a signal output end of the signal amplification circuit, the indication circuit includes a light emitting diode, an anode of the light emitting diode is connected to the second end of the seventh resistor, and a cathode of the light emitting diode is grounded.
The utility model discloses still provide a water heater, this water heater includes as above water heater control circuit.
The utility model discloses water heater control circuit is through setting up induction circuit, induction circuit includes microwave induction circuit and luminance induction circuit, microwave induction circuit is used for detecting the human removal signal of predetermineeing the within range, and output microwave induction signal to control circuit when detecting human removal signal, luminance induction circuit is used for the light luminance of testing environment, and output luminance induction signal to control circuit, when control circuit is used for receiving microwave induction circuit's human removal signal, control heating device work, and when luminance induction signal is less than predetermineeing luminance signal, control heating device stop work.
When the water heater control circuit detects the movement of a human body, the water heater control circuit indicates that a user is in an active state, and can automatically control the heating device of the water heater to work, thereby being convenient for the user to use; under the condition of detecting night (light brightness is dark), the heating device can be controlled to automatically stop working, the purpose of saving energy is achieved, and the reliability of the intelligent degree of the water heater is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic block diagram of a control circuit of a water heater according to an embodiment of the present invention;
FIG. 2 is a schematic block diagram of another embodiment of the control circuit of the water heater of the present invention;
FIG. 3 is a schematic block diagram of a control circuit for a water heater according to another embodiment of the present invention;
fig. 4 is a schematic circuit structure diagram of an embodiment of a microwave detection circuit in the control circuit of the water heater of the present invention;
fig. 5 is a schematic circuit structure diagram of an embodiment of a signal amplification circuit in the control circuit of the water heater of the present invention;
fig. 6 is a schematic diagram of a circuit structure of an embodiment of a signal amplifying circuit and an indicating circuit in a water heater control circuit of the present invention.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) | |
| 10 | Control ofCircuit arrangement | Q2 | Second NPN |
|
| 20 | Induction circuit | | PNP triode | |
| 30 | Heating device | R1 | A |
|
| 21 | Microwave induction circuit | R2 | |
|
| 22 | Brightness sensing circuit | R3 | |
|
| 40 | Power supply conversion circuit | R4 | |
|
| 50 | Display device | R5 | |
|
| 60 | Voltage detection circuit | R6 | |
|
| 23 | Signal amplifying circuit | R7 | Seventh resistor | |
| VDD | DC power supply terminal | C1 | First capacitor | |
| ACC | AC power supply terminal | C2 | Second capacitor | |
| U1 | Induction chip | C3 | Third capacitor | |
| Q1 | A first NPN triode | D1 | Light emitting diode |
The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that the description relating to "first", "second", etc. in the present invention is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout is: the method comprises three parallel schemes, wherein the scheme is taken as an A/B (A/B) as an example, the scheme comprises a scheme A, a scheme B or a scheme A and a scheme B which are simultaneously met, in addition, the technical schemes between the various embodiments can be combined with each other, but the technical schemes must be realized by a person with ordinary skill in the art as a basis, and when the technical schemes are mutually contradictory or can not be realized, the combination of the technical schemes is not considered to exist, and the protection scope of the invention is not within the protection scope of the invention.
The utility model provides a water heater control circuit.
As shown in fig. 1, fig. 1 is a schematic block diagram of an embodiment of a water heater control circuit of the present invention, in this embodiment, the water heater control circuit includes: an alternating current power supply ACC, a direct current power supply VDD, a control circuit 10, an induction circuit 20 and a heating device 30;
the alternating current power supply end ACC is connected with a power supply end of the heating device 30, a power supply end of the direct current power supply end VDD is respectively connected with the control circuit 10 and the induction circuit 20, a signal end of the control circuit 10 is connected with a signal end of the induction circuit 20, and a control end of the control circuit 10 is connected with a controlled end of the heating device 30;
a sensing circuit 20 including a microwave sensing circuit 21 and a brightness sensing circuit 22;
the microwave induction circuit 21 is used for detecting a human body movement signal within a preset range and outputting the microwave induction signal to the control circuit 10 when the human body movement signal is detected;
the brightness sensing circuit 22 is used for detecting the light brightness of the environment and outputting a brightness sensing signal to the control circuit 10;
and a control circuit 10 for controlling the heating device 30 to operate when receiving the human body movement signal from the microwave induction circuit 21, and controlling the heating device 30 to stop operating when the brightness induction signal is less than the preset brightness signal.
In this embodiment, the ac power source ACC is used to input an ac power source and provide a working power source for the heating apparatus 30, a phase voltage of the ac power source is generally 220V, the heating apparatus 30 includes a power control circuit and a heating device, a power input end of the power control circuit is connected to the ac power source ACC and outputs an adjustable voltage to the heating device, the heating device is used to perform heating operation according to a voltage value output by the power control circuit, and the heating apparatus 30 may be a heating rod, a heating tube, a heating electrode, or the like.
The dc power supply terminal VDD is used for inputting a dc power and providing a working power for the control circuit 10 and the sensing circuit 20, the dc power supply terminal VDD may be connected to the power module, or connected to the mains input terminal through the power conversion circuit 40, for example, directly connected to a battery, and provided with a dc power by the battery, and the specific connection mode of the dc power supply terminal VDD may be set according to the requirement, and is not limited herein.
The control circuit 10 is configured to coordinate operations of the modules of the water heater, for example, to correspondingly control the heating device 30 to heat according to a user instruction so as to reach a preset water temperature, and the control circuit 10 may be composed of an MCU and peripheral devices.
The utility model discloses water heater control circuit is through setting up induction circuit 20, induction circuit 20 includes microwave induction circuit 21 and luminance induction circuit 22, microwave induction circuit 21 is used for detecting the human removal signal of predetermineeing the within range, and output microwave induction signal to control circuit 10 when detecting human removal signal, luminance induction circuit 22 is used for the light luminance of testing environment, and output luminance induction signal to control circuit 10, when control circuit 10 is used for receiving the human removal signal of microwave induction circuit 21, control heating device 30 works, and when luminance induction signal is less than predetermineeing luminance signal, control heating device 30 stop work.
When the water heater control circuit detects the movement of a human body, namely, the user is in an active state, the heating device 30 of the water heater can be automatically controlled to work, and the use of the water heater is convenient for the user; under the condition that night (light brightness is dark) is detected, the heating device 30 is controlled to automatically stop working, the purpose of energy conservation is achieved, and the reliability of the intelligent degree of the water heater is improved.
As shown in fig. 2, in order to improve the endurance of the control circuit 10 and the sensing circuit 20 and reduce the number of times of battery replacement, the control circuit of the water heater further includes a power conversion circuit 40, and the power conversion circuit 40 is connected between the input end of the alternating current power supply and the direct current power supply end VDD; the power conversion circuit 40 is configured to convert an ac power input from an ac power input terminal into a dc power and output the dc power to a dc power source terminal VDD, and the power conversion circuit 40 may include a rectifier filter circuit, a voltage conversion circuit, and a voltage regulator circuit, such as a rectifier bridge, a filter capacitor, a voltage divider resistor, and a voltage regulator, and the specific internal structure of the power conversion circuit 40 may be selected according to actual conditions.
As shown in fig. 2, the water heater control circuit further includes a display device 50, and a signal terminal of the display device 50 is connected to the control circuit 10;
the control circuit 10 is further configured to control the display device 50 to operate when the microwave sensing circuit 21 detects the human body movement signal, and control the display device 50 to stop operating when the brightness sensing signal is less than the preset brightness signal.
The display device 50 comprises a display screen and an operable interface, when the microwave sensing circuit 21 detects a human body movement signal, the control circuit 10 controls the heating device 30 and the display device 50 to work simultaneously, so that the operation and use of a user are facilitated, the working state of the water heater can be controlled, such as temperature adjustment, heating time and the like, the display device 50 is synchronous with the working state of the heating device 30, and when the heating device 30 stops working, the display device 50 also keeps a power-off state, so that the energy consumption is further reduced.
Referring to fig. 2, in order to ensure the safety of the heating device 30, the control circuit of the water heater further includes a voltage detection circuit 60, a detection terminal of the voltage detection circuit 60 is connected to the ac power source ACC, and a signal terminal of the voltage detection circuit 60 is connected to a signal terminal of the control circuit 10; the voltage detection circuit 60 is configured to detect a voltage of the ac power source terminal ACC, output a voltage detection signal to the control circuit 10, and when detecting that the voltage of the ac power source is overvoltage or undervoltage, the control circuit 10 controls the heating device 30 to keep a stop state, so as to prevent the water heater from working in an abnormal state under a bad voltage state, such as burning of the heating device 30.
As shown in fig. 4, in an embodiment, the microwave sensing circuit 21 includes an antenna Y1, a first resistor R1, a second resistor R2, a third resistor R3, a first capacitor C1, a second capacitor C2, a third capacitor C3, a first NPN transistor Q1, and a sensing chip U1;
a first end of the first resistor R1, a first end of the first capacitor C1, a power supply end of the collector sense chip U1 of the first NPN transistor Q1 and a dc power supply end VDD are interconnected, a second end of the first resistor R1, a first end of the second capacitor C2 and a second end of the second resistor R2 are interconnected, a second end of the second resistor R2, a signal end of the antenna Y1, a base of the first NPN transistor Q1 and a first end of the third resistor R3 are interconnected, an emitter of the first NPN transistor Q1, a first end of the third capacitor C3 and a signal end of the sense chip U1 are interconnected, and a second end of the first capacitor C1, a second end of the second capacitor C2, a second end of the third capacitor C3, a second end of the third resistor R3 and a ground end of the sense chip U1 are all grounded.
When a person enters a microwave induction range, the first NPN triode Q1 is conducted after the antenna receives a microwave signal and transmits a high level to the induction chip U1, the induction chip U1 processes and identifies the high level, a control signal is output to control the heating device 30 to work, when no person moves in the microwave induction range, no signal is input to the antenna, the first NPN triode Q1 is kept off, the induction chip U1 does not work, and meanwhile, the heating device 30 is kept in a standby state.
In an embodiment, the brightness sensing circuit 22 includes a photo resistor, a first end of the photo resistor is grounded, a second end of the photo resistor is connected to the signal end of the control circuit 10, when the brightness control is required, the photo resistor detects the brightness of the light and transmits the brightness sensing signal to the control circuit 10, and the control circuit 10 outputs a corresponding control signal after combining the brightness sensing signal to control the operation of the heating device 30.
As shown in fig. 3 and 5, the sensing circuit 20 further includes a signal amplifying circuit, a signal input end of the signal amplifying circuit is connected to the signal end of the microwave sensing circuit 21, a signal output end of the amplifying circuit is connected to the signal end of the control circuit 10, the signal amplifying circuit is configured to amplify the microwave sensing signal, and the signal amplifying circuit includes a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, a second NPN triode Q2, and a PNP triode Q3;
the base of the second NPN triode Q2, the first end of the fourth resistor R4 and the signal end of the microwave sensing circuit 21 are interconnected, the emitter of the second NPN triode Q2 and the second end of the fourth resistor R4 are both grounded, the collector of the second NPN triode Q2 is connected to the first end of the fifth resistor R5, the second end of the fifth resistor R5, the first end of the sixth resistor R6 and the base of the PNP triode Q3 are interconnected, the second end of the sixth resistor R6, the emitter of the PNP triode Q3 and the dc power source VDD are interconnected, the collector of the PNP triode Q3 is connected to the first end of the seventh resistor R7, the connection node thereof is the signal output end of the signal amplifying circuit, and the second end of the seventh resistor R7 is grounded.
In this embodiment, in order to avoid that the microwave sensing signal output by the microwave sensing circuit 21 is too small, which makes the control circuit 10 difficult to recognize, a signal amplifying circuit is further disposed between the microwave sensing circuit 21 and the control circuit 10, and the control circuit 10 can be ensured to receive a reliable microwave sensing signal through two-stage signal amplification of the second NPN triode Q2 and the PNP triode Q3.
Meanwhile, as shown in fig. 6, the sensing circuit 20 further includes an indication circuit 24, a signal terminal of the indication circuit 24 is connected to a signal output terminal of the signal amplifying circuit, the indication circuit 24 includes a light emitting diode D1, an anode of the light emitting diode D1 is connected to a second terminal of the seventh resistor R7, a cathode of the light emitting diode D1 is grounded, and the light emitting diode D1 lights up to emit light when the microwave sensing circuit 21 is in operation, so as to inform a user of an operating state of the thermal sensing circuit.
The utility model discloses still provide a water heater, this water heater includes water heater control circuit, and this water heater control circuit's concrete structure refers to above-mentioned embodiment, because this water heater has adopted the whole technical scheme of above-mentioned all embodiments, consequently has all beneficial effects that the technical scheme of above-mentioned embodiment brought at least, and the repeated description is no longer given here.
The above only be the preferred embodiment of the utility model discloses a not consequently restriction the utility model discloses a patent range, all are in the utility model discloses a conceive, utilize the equivalent structure transform of what the content was done in the description and the attached drawing, or direct/indirect application all is included in other relevant technical field the utility model discloses a patent protection within range.
Claims (10)
1. A water heater control circuit, comprising: the device comprises an alternating current power supply end, a direct current power supply end, a control circuit, an induction circuit and a heating device;
the alternating current power supply end is connected with the power supply end of the heating device, the power supply end of the direct current power supply end is respectively connected with the control circuit and the induction circuit, the signal end of the control circuit is connected with the signal end of the induction circuit, and the control end of the control circuit is connected with the controlled end of the heating device;
the induction circuit comprises a microwave induction circuit and a brightness induction circuit;
the microwave induction circuit is used for detecting a human body movement signal within a preset range and outputting a microwave induction signal to the control circuit when the human body movement signal is detected;
the brightness sensing circuit is used for detecting the light brightness of the environment and outputting a brightness sensing signal to the control circuit;
the control circuit is used for controlling the heating device to work when receiving the human body movement signal of the microwave induction circuit, and controlling the heating device to stop working when the brightness induction signal is smaller than the preset brightness signal.
2. The water heater control circuit as recited in claim 1 further comprising a power conversion circuit connected between the ac power input and the dc power supply terminal;
and the power supply conversion circuit is used for converting the alternating current power supply input by the alternating current power supply input end into a direct current power supply and outputting the direct current power supply to the direct current power supply end.
3. The water heater control circuit as recited in claim 1 further comprising a display device, a signal terminal of the display device being connected to the control circuit;
the control circuit is further used for controlling the display device to work when the microwave induction circuit detects a human body movement signal, and controlling the display device to stop working when the brightness induction signal is smaller than a preset brightness signal.
4. The water heater control circuit according to claim 1, further comprising a voltage detection circuit, wherein a detection terminal of the voltage detection circuit is connected to the ac power supply terminal, and a signal terminal of the voltage detection circuit is connected to a signal terminal of the control circuit;
the voltage detection circuit is used for detecting the voltage of the alternating current power supply end and correspondingly outputting a voltage detection signal to the control circuit.
5. The water heater control circuit of claim 1, wherein the microwave sensing circuit comprises an antenna, a first resistor, a second resistor, a third resistor, a first capacitor, a second capacitor, a third capacitor, a first NPN transistor, and a sense chip;
the first end of the first resistor, the first end of the first capacitor, the collector of the first NPN transistor, the power supply end of the sense chip, and the dc power supply end are interconnected, the second end of the first resistor, the first end of the second capacitor, and the second end of the second resistor are interconnected, the second end of the second resistor, the signal end of the antenna, the base of the first NPN transistor, and the first end of the third resistor are interconnected, the emitter of the first NPN transistor, the first end of the third capacitor, and the signal end of the sense chip are interconnected, and the second end of the first capacitor, the second end of the second capacitor, the second end of the third resistor, and the ground end of the sense chip are all grounded.
6. The water heater control circuit as recited in claim 5 wherein said brightness sensing circuit comprises a light dependent resistor, a first terminal of said light dependent resistor being connected to ground, a second terminal of said light dependent resistor being connected to a signal terminal of said control circuit.
7. The water heater control circuit as recited in claim 5 wherein said sensing circuit further comprises a signal amplification circuit, a signal input terminal of said signal amplification circuit is connected to a signal terminal of said microwave sensing circuit, a signal output terminal of said amplification circuit is connected to a signal terminal of said control circuit, and said signal amplification circuit is configured to amplify said microwave sensing signal.
8. The water heater control circuit of claim 7, wherein the signal amplification circuit comprises a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, a second NPN transistor, and a PNP transistor;
the base electrode of the second NPN triode, the first end of the fourth resistor and the signal end of the microwave sensing circuit are interconnected, the emitter electrode of the second NPN triode and the second end of the fourth resistor are both grounded, the collector electrode of the second NPN triode is connected with the first end of the fifth resistor, the second end of the fifth resistor, the first end of the sixth resistor and the base electrode of the PNP triode are interconnected, the second end of the sixth resistor, the emitter electrode of the PNP triode and the direct current power source end are interconnected, the collector electrode of the PNP triode is connected with the first end of the seventh resistor, the connection node of the PNP triode is the signal output end of the signal amplification circuit, and the second end of the seventh resistor is grounded.
9. The water heater control circuit as recited in claim 8 wherein said sensing circuit further comprises an indicator circuit, a signal terminal of said indicator circuit being connected to a signal output terminal of said signal amplification circuit, said indicator circuit comprising a light emitting diode, an anode of said light emitting diode being connected to a second terminal of said seventh resistor, a cathode of said light emitting diode being connected to ground.
10. A water heater comprising a water heater control circuit as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920991689.7U CN210128519U (en) | 2019-06-26 | 2019-06-26 | Water heater control circuit and water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920991689.7U CN210128519U (en) | 2019-06-26 | 2019-06-26 | Water heater control circuit and water heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210128519U true CN210128519U (en) | 2020-03-06 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920991689.7U Active CN210128519U (en) | 2019-06-26 | 2019-06-26 | Water heater control circuit and water heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210128519U (en) |
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2019
- 2019-06-26 CN CN201920991689.7U patent/CN210128519U/en active Active
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| GR01 | Patent grant | ||
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| TR01 | Transfer of patent right |
Effective date of registration: 20230404 Address after: 241000 west side of 3 / F, No.5 office building, new energy and new materials gathering area, Fuzhou Road, Jiangbei District, Wuhu City, Anhui Province Patentee after: Wuhu Midea intelligent kitchen electricity Manufacturing Co.,Ltd. Address before: 241009 Wan Chun East Road, East District, Wuhu economic and Technological Development Zone, Anhui Patentee before: WUHU MIDEA KITCHEN AND BATH APPLIANCES MFG. Co.,Ltd. |
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| TR01 | Transfer of patent right |