CN111981679A - Electric water heater and control method thereof - Google Patents
Electric water heater and control method thereof Download PDFInfo
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- CN111981679A CN111981679A CN202010818412.1A CN202010818412A CN111981679A CN 111981679 A CN111981679 A CN 111981679A CN 202010818412 A CN202010818412 A CN 202010818412A CN 111981679 A CN111981679 A CN 111981679A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 64
- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000006243 chemical reaction Methods 0.000 claims description 25
- 239000003990 capacitor Substances 0.000 claims description 13
- 238000001914 filtration Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 230000007935 neutral effect Effects 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
- F24H1/18—Water-storage heaters
- F24H1/20—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
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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
- F24H9/0005—Details for water heaters
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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
- F24H9/18—Arrangement or mounting of grates or heating means
- F24H9/1809—Arrangement or mounting of grates or heating means for water heaters
- F24H9/1818—Arrangement or mounting of electric heating means
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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
Abstract
The invention discloses an electric water heater and a control method thereof, wherein the electric water heater comprises a shell, an inner container, a heater, a temperature acquisition unit and a controller, wherein the inner container is positioned in the shell and used for storing water, the heater is positioned in the inner container, the end part of the heater extends out of the inner container and is connected with the controller arranged in the shell, and the temperature acquisition unit is arranged on a corresponding plug of the electric water heater and is connected with the controller. The temperature acquisition unit acquires real-time temperature on a plug corresponding to the electric water heater, transmits the real-time temperature to the controller, and stops working when the real-time temperature is greater than a temperature threshold value; otherwise, the heater continues to work. According to the invention, the temperature threshold is set, and the heater is immediately cut off when the real-time temperature is greater than the temperature threshold, so that the heater stops working, thereby not only protecting internal parts of the electric water heater from being burnt, but also preventing the safety problem caused by overhigh temperature of the plug.
Description
Technical Field
The invention belongs to the technical field of electric water heaters, and particularly relates to an electric water heater and a control method thereof.
Background
High-power electric appliances are generally used in family life, the electric appliances basically adopt common tripolar plugs or leakage protection plugs, the electric water heater products belong to the high-power electric water heater, and the existing electric water heater adopts the electricity-proof wall technology and then adopts the common triangular plugs more widely.
However, because of some uncertain factors, such as poor socket, use of socket not matched with the plug, aging of the socket, etc., the contact resistance between the plug and the socket is increased, long-time heating can cause fire, and serious potential safety hazards exist.
Disclosure of Invention
In order to solve the problems, the invention provides an electric water heater, when the temperature of a corresponding plug of the electric water heater is higher, the heater is cut off, and the potential safety hazard caused by long-time heating of the plug is reduced to a certain extent.
Another object of the present invention is to provide a control method for an electric water heater.
The technical scheme adopted by the invention is as follows:
an electric water heater comprises a shell, an inner container, a heater, a temperature acquisition unit and a controller, wherein the inner container is positioned in the shell and used for storing water, the heater is positioned in the inner container, the end part of the heater extends out of the inner container and is connected with the controller arranged in the shell, and the temperature acquisition unit is arranged on a corresponding plug of the electric water heater and is connected with the controller.
Preferably, the electric water heater further comprises a temperature processing unit, wherein the temperature processing unit is positioned between the temperature acquisition unit and the controller;
the temperature acquisition unit acquires real-time temperature on a plug corresponding to the electric water heater, the real-time temperature is transmitted to the temperature processing unit, the temperature processing unit performs analog-to-digital conversion on the real-time temperature and then transmits the real-time temperature to the controller, the controller receives the real-time temperature, compares the rest preset temperatures, and controls the working state of the heater according to the comparison result.
Preferably, the electric water heater further comprises a display screen, and the display screen is connected with the controller and is used for displaying the real-time temperature on the corresponding plug of the electric water heater.
Preferably, the temperature acquisition unit comprises a first thermistor RT1, one end of the first thermistor RT1 is connected with a power supply, the other end of the first thermistor RT1 is connected with the ground through a first resistor R1, and the joint of the first thermistor RT1 and the first resistor R1 is connected with the ground through a first capacitor C1.
Preferably, the temperature processing unit comprises a sensor terminal U, a second pin of the sensor terminal U is connected with a power supply, a first pin of the sensor terminal U is connected with the ground through a signal zero-adjusting potentiometer W1, a fifth resistor R5 and a sixth resistor R6 in sequence, the sixth resistor R6 is connected with a third capacitor C3 in parallel for filtering, a voltage dividing point of the fifth resistor R5 and a voltage dividing point of the sixth resistor R6 is connected with a third pin of the first operational amplifier CF1, a second pin of the first operational amplifier CF1 is connected with a sixth pin of the second operational amplifier CF2 through an eighth resistor R8 and a second zero-adjusting potentiometer W2, a second pin of the first operational amplifier CF1 is connected with a seventh pin of the second operational amplifier CF2 through an eighth resistor R8, a second zero-adjusting potentiometer W2, a seventh resistor R7, a fifth pin of the second operational amplifier CF2 is connected with the ground, and an eleventh pin of the first operational amplifier CF1 is connected with a eleventh pin of the second operational amplifier CF 11, The twelfth resistor R12 is grounded, and the fourth pin is connected with the power supply.
Preferably, the temperature processing unit further comprises a third operational amplifier D, a third pin of the third operational amplifier D is connected with an eleventh resistor R11 and a twelfth resistor R12, a second pin of the third operational amplifier D is connected with a seventh pin of the second operational amplifier CF2 through a tenth resistor R10, the first pin, the fifth pin and the seventh pin of the third operational amplifier D are floating, an eighth pin of the third operational amplifier D is connected with a power supply, and a sixth pin of the third operational amplifier D is connected with the seventh pin of the second operational amplifier CF2 through a thirteenth resistor R13 and a tenth resistor R10.
Preferably, the temperature processing unit further includes an AD conversion circuit, the AD conversion circuit includes an AD conversion chip U1, the AD conversion chip U1 is connected to the sixth pin of the third operational amplifier D through a fourteenth resistor R14, the AD conversion circuit further includes a fourth capacitor C4 and a clamping diode D1 which are arranged in parallel, the fourth capacitor C4 and the clamping diode D1 are connected in parallel and then grounded, and the other circuit is connected to the fourteenth resistor R14 and the AD conversion chip U1 respectively.
Preferably, the first operational amplifier CF1 and the second operational amplifier CF2 are each of the type: LM258-2, the model of the third operational amplifier D is OP 07-2.
A control method of an electric water heater is used for controlling the electric water heater and is implemented according to the following steps:
s1, the temperature acquisition unit acquires the real-time temperature on the plug corresponding to the electric water heater and transmits the real-time temperature to the controller;
and S2, controlling the working state of the heater by the controller according to the relation between the real-time temperature and the preset temperature threshold value.
Preferably, the controller in S2 controls the operating state of the heater according to the relationship between the real-time temperature and a preset temperature threshold, specifically:
when the real-time temperature is greater than the temperature threshold value, stopping the heater; otherwise, the heater continues to work.
Compared with the prior art, when the temperature acquisition unit is used, the temperature acquisition unit acquires the real-time temperature on the plug corresponding to the electric water heater and transmits the real-time temperature to the controller, and the controller controls the working state of the heater according to the relation between the real-time temperature and the preset temperature threshold, specifically comprising the following steps: when the real-time temperature is greater than the temperature threshold value, stopping the heater; otherwise, the heater continues to work. According to the invention, the temperature threshold is set, and the heater is immediately cut off when the real-time temperature is greater than the temperature threshold, so that the heater stops working, thereby not only protecting internal parts of the electric water heater from being burnt, but also preventing the safety problem caused by overhigh temperature of the plug.
Drawings
Fig. 1 is a schematic structural diagram of an electric water heater provided in embodiment 1 of the present invention;
fig. 2 is a schematic block diagram of an electric water heater according to embodiment 1 of the present invention;
fig. 3 is a circuit diagram of a temperature acquisition unit in an electric water heater according to embodiment 1 of the present invention;
fig. 4 is a circuit diagram of a temperature processing unit in an electric water heater according to embodiment 1 of the present invention;
fig. 5 is a flowchart of a control method of an electric water heater according to embodiment 2 of the present invention.
The temperature control device comprises a shell 1, an inner container 2, a heater 3, a temperature acquisition unit 4, a controller 5, a temperature processing unit 6, a display screen 7, a plug 8, a zero wire pin 81, a live wire pin 82 and a ground wire pin 83.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the description of the present invention, it is to be understood that the terms "vertical", "lateral", "longitudinal", "front", "rear", "left", "right", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description of the present invention, and do not mean that the device or member to which the present invention is directed must have a specific orientation or position, and thus, cannot be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1
The embodiment 1 of the invention provides an electric water heater, as shown in fig. 1, which comprises a shell 1, an inner container 2, a heater 3, a temperature acquisition unit 4 and a controller 5, wherein the inner container 2 is positioned in the shell 1 and used for storing water, the heater 3 is positioned in the inner container 2, the end part of the heater extends out of the inner container 2 and is connected with the controller 5 arranged in the shell 1, and the temperature acquisition unit 4 is arranged on a corresponding plug of the electric water heater and is connected with the controller 5;
specifically, the plug 8 comprises a neutral pin 81, a live pin 82 and a ground pin 83, and the temperature acquisition unit 4 is adjacent to the neutral pin 81 or the live pin 82;
thus, with the above structure, the water in the inner container 2 is heated by the heater 3, and in the heating process: the temperature acquisition unit 4 acquires real-time temperature on the plug 8 corresponding to the electric water heater and transmits the real-time temperature to the controller 5, and the controller 5 controls the working state of the heater 3 according to the relation between the real-time temperature and a preset temperature threshold, specifically: when the real-time temperature is greater than the temperature threshold, the heater 3 stops working; otherwise the heater 3 continues to operate.
As shown in fig. 2, the electric water heater further comprises a temperature processing unit 6, wherein the temperature processing unit 6 is located between the temperature acquisition unit 4 and the controller 5;
the temperature acquisition unit 4 acquires real-time temperature on a plug corresponding to the electric water heater, the real-time temperature is transmitted to the temperature processing unit 6, the temperature processing unit 6 performs analog-to-digital conversion on the real-time temperature and then transmits the real-time temperature to the controller 5, the controller 5 receives the real-time temperature, compares the real-time temperature with preset temperature, and controls the working state of the heater 3 according to a comparison result.
The electric water heater further comprises a display screen 7, wherein the display screen 7 is connected with the controller 5 and is used for displaying the real-time temperature on the corresponding plug of the electric water heater.
As shown in fig. 3, the temperature collecting unit 4 comprises a first thermistor RT1, one end of the first thermistor RT1 is connected with a power supply, the other end of the first thermistor RT1 is connected with the ground through a first resistor R1, and the connection between the first thermistor RT1 and the first resistor R1 is connected with the ground through a first capacitor C1;
thus, when the temperature of the plug 8 changes, the resistance value of the first thermistor RT1 changes along with the change of the temperature, the first resistor R1 is a series resistor which provides a fixed resistance value, and the actual resistance value of the first thermistor RT1 in the temperature state is judged by comparing the ratio of the fixed resistance value of the first resistor R1 and the changed resistance value of the first thermistor RT 1;
when the resistance value of the first thermistor RT1 changes, the voltage division value of the first thermistor RT1 and the first resistor R1 also changes, the voltage division value is detected at the voltage detection end, and the actual resistance value of the first thermistor RT1 at the moment can be obtained, so that the plug temperature value detected by the first thermistor RT1 at the moment is obtained, and the whole temperature acquisition process is completed.
As shown in fig. 4, the temperature processing unit 6 includes a sensor terminal U, a second pin of the sensor terminal U is connected to a power supply, a first pin of the sensor terminal U is connected to a ground through a signal zero potentiometer W1, a fifth resistor R5 and a sixth resistor R6 in sequence, the sixth resistor R6 is connected in parallel with a third capacitor C3 for filtering, a voltage dividing point of the fifth resistor R5 and a sixth resistor R6 is connected to a third pin of a first operational amplifier CF1, a second pin of the first operational amplifier CF1 is connected to a sixth pin of a second operational amplifier CF2 through an eighth resistor R8 and a second zero potentiometer W2, a second pin of the first operational amplifier CF1 is connected to a seventh pin of a second operational amplifier CF2 through an eighth resistor R8, a second zero potentiometer W2 and a seventh resistor R7, a fifth pin of the second operational amplifier CF2 is connected to the ground, a first pin of the first operational amplifier CF1 is grounded through an eleventh resistor R11 and a twelfth resistor R12, and a fourth pin is connected with a power supply;
the components form a voltage division circuit and an amplifying circuit, and the voltage division circuit is used for converting the analog quantity acquired by the temperature acquisition unit 4 into a voltage signal; and the amplifying circuit is used for amplifying the voltage signal.
The temperature processing unit 6 further comprises a third operational amplifier D, a third pin of the third operational amplifier D is connected with an eleventh resistor R11 and a twelfth resistor R12, a second pin of the third operational amplifier D is connected with a seventh pin of a second operational amplifier CF2 through a tenth resistor R10, the first pin, the fifth pin and the seventh pin of the third operational amplifier D are floating, an eighth pin of the third operational amplifier D is connected with a power supply, and a sixth pin of the third operational amplifier D is connected with the seventh pin of the second operational amplifier CF2 through a thirteenth resistor R13 and a tenth resistor R10.
The temperature processing unit 6 further comprises an AD conversion circuit, the AD conversion circuit comprises an AD conversion chip U1, the AD conversion chip U1 is connected with a sixth pin of the third operational amplifier D through a fourteenth resistor R14, the AD conversion circuit further comprises a fourth capacitor C4 and a clamping diode D1 which are arranged in parallel, the fourth capacitor C4 and the clamping diode D1 are connected in parallel and then grounded all the way, and the other way is connected with the fourteenth resistor R14 and the AD conversion chip U1 respectively.
The first operational amplifier CF1 and the second operational amplifier CF2 are both of the type: LM258-2, the model of the third operational amplifier D is OP 07-2.
Specifically, the temperature acquisition unit 4 comprises a temperature sensor, the temperature sensor is connected with a sensor terminal U, the temperature sensor returns the temperature through a 5V power supply and a standard two-wire system 4-20mA, the current is limited (voltage division and current limitation) through a fifth resistor R5, the voltage is divided by a sixth resistor R6 to generate 0-2V voltage, the voltage is amplified to 0-2.5V through an amplifying circuit, overvoltage protection is carried out through a third operational amplifier D and a clamping diode D1, and the voltage is filtered by a fourteenth resistor R14 and a fourth capacitor C4 and then sent to an AD conversion chip U1 to acquire and complete 4-20mA data acquisition.
In addition, for the convenience of observation, in the specific embodiment, the display screen 7 is a large-screen liquid crystal display screen.
The working process is as follows:
the heater 3 heats the water in the inner container 2, and in the heating process: the temperature acquisition unit 4 acquires real-time temperature analog quantity on a plug 8 corresponding to the electric water heater, the real-time temperature analog quantity is transmitted to the temperature processing unit 6, a voltage division circuit in the temperature processing unit 6 converts the real-time temperature analog quantity into a voltage signal and then amplifies the voltage signal through an amplifying circuit, analog-to-digital conversion is carried out through an AD conversion circuit, the analog-to-digital conversion result is transmitted to the controller 5, the controller 5 receives the result and compares the result with preset temperature, and the heater 3 is immediately cut off when the real-time temperature is higher than a temperature threshold value, so that the heater stops working.
Example 2
An embodiment 2 of the present invention provides a control method of an electric water heater, as shown in fig. 5, for controlling the electric water heater described in embodiment 1, which is implemented specifically according to the following steps:
s1, the temperature acquisition unit 4 acquires the real-time temperature on the plug corresponding to the electric water heater and transmits the real-time temperature to the controller 5;
s2, the controller 5 controls the operating state of the heater 3 according to the relationship between the real-time temperature and the preset temperature threshold, specifically:
when the real-time temperature is greater than the temperature threshold, the heater 3 stops working; otherwise the heater 3 continues to operate.
This embodiment gathers the real-time temperature on the plug that electric water heater corresponds through the temperature acquisition unit to transmit real-time temperature to the controller, the operating condition of heater is controlled according to the relation between real-time temperature and the predetermined temperature threshold value to the controller, specifically is: when the real-time temperature is greater than the temperature threshold value, stopping the heater; otherwise, the heater continues to work. The invention prevents the safety problem caused by overhigh temperature of the plug by setting the temperature threshold and immediately cutting off the heater to stop working when the real-time temperature is higher than the temperature threshold.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. The electric water heater is characterized by comprising a shell (1), a liner (2), a heater (3), a temperature acquisition unit (4) and a controller (5), wherein the liner (2) is positioned in the shell (1) and used for storing water, the heater (3) is positioned in the liner (2) and the end part of the heater extends out of the liner (2) to be connected with the controller (5) arranged in the shell (1), and the temperature acquisition unit (4) is arranged on a plug corresponding to the electric water heater and connected with the controller (5).
2. An electric water heater according to claim 1, characterized in that it further comprises a temperature processing unit (6), said temperature processing unit (6) being located between the temperature acquisition unit (4) and the controller (5);
the temperature acquisition unit (4) acquires real-time temperature on a plug corresponding to the electric water heater, the real-time temperature is transmitted to the temperature processing unit (6), the temperature processing unit (6) performs analog-to-digital conversion on the real-time temperature and then transmits the real-time temperature to the controller (5), the controller (5) receives the real-time temperature, compares the rest preset temperatures, and controls the working state of the heater (3) according to the comparison result.
3. The electric water heater according to claim 2, further comprising a display screen (7), wherein the display screen (7) is connected to the controller (5) for displaying the real-time temperature on the corresponding plug of the electric water heater.
4. An electric water heater according to any one of claims 1-3, characterized in that the temperature collecting unit (4) comprises a first thermistor RT1, one end of the first thermistor RT1 is connected with the power supply, the other end is connected with the ground through a first resistor R1, and the joint of the first thermistor RT1 and the first resistor R1 is connected with the ground through a first capacitor C1.
5. The electric water heater according to claim 4, wherein the temperature processing unit (6) comprises a sensor terminal U, a second pin of the sensor terminal U is connected with a power supply, a first pin of the sensor terminal U is connected with the ground through a signal zero-adjusting potentiometer W1, a fifth resistor R5 and a sixth resistor R6 in sequence, the sixth resistor R6 is connected with a third capacitor C3 in parallel for filtering, a voltage dividing point of the fifth resistor R5 and the sixth resistor R6 is connected with a third pin of a first operational amplifier CF1, a second pin of the first operational amplifier CF1 is connected with a sixth pin of a second operational amplifier CF2 through an eighth resistor R8 and a second zero-adjusting potentiometer W2, a second pin of a first operational amplifier CF1 is connected with a seventh pin of a second operational amplifier CF2 through an eighth resistor R8, a second zero-adjusting potentiometer W2 and a seventh resistor R7, the fifth pin of the second operational amplifier CF2 is grounded, the first pin of the first operational amplifier CF1 is grounded through an eleventh resistor R11 and a twelfth resistor R12, and the fourth pin is connected with a power supply.
6. The electric water heater according to claim 5, wherein the temperature processing unit (6) further comprises a third operational amplifier D, a third pin of the third operational amplifier D is connected with an eleventh resistor R11 and a twelfth resistor R12, a second pin of the third operational amplifier D is connected with a seventh pin of a second operational amplifier CF2 through a tenth resistor R10, a first pin, a fifth pin and a seventh pin of the third operational amplifier D are floating, an eighth pin of the third operational amplifier D is connected with a power supply, and a sixth pin of the third operational amplifier D is connected with the seventh pin of the second operational amplifier CF2 through a thirteenth resistor R13 and a tenth resistor R10.
7. The electric water heater according to claim 6, wherein the temperature processing unit (6) further comprises an AD conversion circuit, the AD conversion circuit comprises an AD conversion chip U1, the AD conversion chip U1 is connected with the sixth pin of the third operational amplifier D through a fourteenth resistor R14, the AD conversion circuit further comprises a fourth capacitor C4 and a clamping diode D1 which are arranged in parallel, the fourth capacitor C4 and the clamping diode D1 are connected in parallel, one path is grounded, and the other path is respectively connected with the fourteenth resistor R14 and the AD conversion chip U1.
8. The electric water heater of claim 7, wherein the first operational amplifier CF1 and the second operational amplifier CF2 are each of the type: LM258-2, the model of the third operational amplifier D is OP 07-2.
9. A control method of an electric water heater, characterized in that it is used for controlling the electric water heater according to any one of claims 1-8, and is implemented according to the following steps:
s1, the temperature acquisition unit (4) acquires real-time temperature on a plug corresponding to the electric water heater and transmits the real-time temperature to the controller (5);
and S2, the controller (5) controls the working state of the heater (3) according to the relation between the real-time temperature and the preset temperature threshold value.
10. The control method of an electric water heater according to claim 9, wherein the controller (5) in S2 controls the operating state of the heater (3) according to the relationship between the real-time temperature and the preset temperature threshold, specifically:
when the real-time temperature is greater than the temperature threshold value, the heater (3) stops working; otherwise, the heater (3) continues to work.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010818412.1A CN111981679A (en) | 2020-08-14 | 2020-08-14 | Electric water heater and control method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010818412.1A CN111981679A (en) | 2020-08-14 | 2020-08-14 | Electric water heater and control method thereof |
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| CN111981679A true CN111981679A (en) | 2020-11-24 |
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| CN203550180U (en) * | 2013-11-06 | 2014-04-16 | 上海电机学院 | Water-storage-type electric water heater with automatic water heating function |
| US20150083708A1 (en) * | 2012-06-13 | 2015-03-26 | Edan Instruments, Inc. | Self-calibration temperature control device and method |
| CN204535063U (en) * | 2015-03-24 | 2015-08-05 | 芜湖美的厨卫电器制造有限公司 | Electric heater |
| CN107270548A (en) * | 2017-08-08 | 2017-10-20 | 广东万家乐燃气具有限公司 | Overtemperature prote control system and electric heater |
| CN207133671U (en) * | 2017-09-18 | 2018-03-23 | 江西远大科技有限公司 | A kind of temperature is precisely controlled device |
| CN208736435U (en) * | 2018-08-14 | 2019-04-12 | 苏州亿耀智能科技有限公司 | Signal acquisition circuit |
| CN212842195U (en) * | 2020-08-14 | 2021-03-30 | 华帝股份有限公司 | Electric water heater |
-
2020
- 2020-08-14 CN CN202010818412.1A patent/CN111981679A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150083708A1 (en) * | 2012-06-13 | 2015-03-26 | Edan Instruments, Inc. | Self-calibration temperature control device and method |
| CN203550180U (en) * | 2013-11-06 | 2014-04-16 | 上海电机学院 | Water-storage-type electric water heater with automatic water heating function |
| CN204535063U (en) * | 2015-03-24 | 2015-08-05 | 芜湖美的厨卫电器制造有限公司 | Electric heater |
| CN107270548A (en) * | 2017-08-08 | 2017-10-20 | 广东万家乐燃气具有限公司 | Overtemperature prote control system and electric heater |
| CN207133671U (en) * | 2017-09-18 | 2018-03-23 | 江西远大科技有限公司 | A kind of temperature is precisely controlled device |
| CN208736435U (en) * | 2018-08-14 | 2019-04-12 | 苏州亿耀智能科技有限公司 | Signal acquisition circuit |
| CN212842195U (en) * | 2020-08-14 | 2021-03-30 | 华帝股份有限公司 | Electric water heater |
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