Method, device and water heater for electronic anode protection

Abstract

The application relates to an electronic anode protection method, device and water heater. The method comprises the following steps: switching the working mode of a driving device of an anode rod into an input detection mode, detecting and acquiring the initial voltage of a metal inner container by the anode rod in the input detection mode; acquiring an output voltage according to the initial voltage; switching the working mode of the driving device into an output voltage mode, and controlling the driving device to output the output voltage to the anode rod. The application can be switched between the input detection mode and the output voltage mode, and can automatically realize the detection function of water quality conductivity, so that the production cost can be reduced and the accuracy can be improved.

Description

Technical Field

[0001] This application relates to the field of smart home appliance technology, and in particular to an electronic anode protection method, device and water heater. Background Technology

[0002] Currently, some water heaters with storage tanks, such as electric water heaters and heat pump water heaters, are already using electronic anodes to protect the inner tank. The principle is to release electrons through the anode rod and transfer them to the surface of the metal inner tank through the water, so that there are excess electrons on the metal inner tank, thus preventing the metal inner tank from corroding and oxidizing due to the loss of electrons.

[0003] Electronic anode, also known as forced current cathodic protection, involves connecting the negative terminal of an intelligent regulating power supply to the inner tank of a water tank and the positive terminal to an auxiliary anode in the aqueous solution. The intelligent regulating power supply measures the potential of the inner tank based on a reference electrode in the aqueous solution. By comparing the potential of the inner tank with that of the reference electrode, the current is adjusted. As the current increases, more electrons move to the inner tank, causing its electron potential to become negative, thus achieving cathodic polarization and bringing it to the cathodic protection potential range for protection.

[0004] To achieve better protection, current electronic anode systems must include water conductivity detection. By detecting the water conductivity parameter, the output voltage and current can be adjusted, resulting in better corrosion protection.

[0005] In the existing technology, the detection system installed on the inner tank is relatively complex. For example, it requires the setting of a reference electrode and an auxiliary reference electrode voltage detection circuit, which is costly. At the same time, the scale formed between the reference electrode and the electron anode will affect the accuracy of the detection. Summary of the Invention

[0006] One of the technical problems solved by this invention is to provide an electronic anode protection method that can switch between two working modes: input detection and output voltage, and automatically realize the function of detecting water conductivity, thereby reducing production costs and improving accuracy.

[0007] The second technical problem solved by this invention is to provide an electronic anode protection device that can switch between two working modes: input detection and output voltage, and automatically realize the function of detecting water conductivity, thereby reducing production costs and improving accuracy.

[0008] The third technical problem solved by this invention is to provide a water heater that can switch between two working modes: input detection and output voltage, and automatically realize the function of detecting water conductivity, thereby reducing production costs and improving accuracy.

[0009] The first technical problem mentioned above is solved by the following technical solution:

[0010] An electronic anode protection method, the method comprising:

[0011] The operating mode of the anode rod driving device is switched to the input detection mode, and the initial voltage of the metal liner is detected and obtained using the anode rod in the input detection mode.

[0012] The output voltage is obtained based on the initial voltage;

[0013] The operating mode of the drive device is switched to output voltage mode, and the drive device is controlled to output the output voltage to the anode rod.

[0014] The electronic anode protection method of this invention first switches the operating mode of the anode rod drive device to input detection mode. In input detection mode, the anode rod is used to detect and obtain the initial voltage of the metal inner tank. That is, by reusing the anode rod, the initial voltage of the metal inner tank can be detected without setting a reference electrode, reducing production costs and avoiding the influence of scale on detection accuracy, thus improving detection accuracy. Then, the output voltage is obtained based on the initial voltage. Next, the operating mode of the drive device is switched to output voltage mode, and the drive device is controlled to output the output voltage to the anode rod. By obtaining the corresponding output voltage based on the initial voltage, the anti-corrosion protection effect is improved. The operating mode of the anode rod drive device in this invention can switch between output voltage mode and input detection mode, thereby achieving the purpose of detecting changes in system water quality and realizing intelligent adjustment.

[0015] The second technical problem mentioned above is solved by the following technical solution:

[0016] An electronic anode protection device, the device comprising: a switching detection module, an acquisition module, and a switching control module; wherein,

[0017] The switching detection module is used to switch the working mode of the anode rod driving device to the input detection mode, and in the input detection mode, use the anode rod to detect and obtain the initial voltage of the metal liner.

[0018] The acquisition module is used to acquire the output voltage based on the initial voltage;

[0019] The switching control module is used to switch the operating mode of the drive device to the output voltage mode and control the drive device to output the output voltage to the anode rod.

[0020] The electronic anode protection device of this invention features a switching detection module that switches the operating mode of the anode rod drive device to input detection mode. In input detection mode, the anode rod is used to detect and acquire the initial voltage of the metal inner tank. This reuse of the anode rod eliminates the need for a reference electrode, reducing production costs and preventing scale buildup from affecting detection accuracy, thus improving accuracy. The acquisition module obtains the output voltage based on the initial voltage. The switching control module switches the drive device's operating mode to output voltage mode and controls the drive device to output this voltage to the anode rod. By obtaining the corresponding output voltage based on the initial voltage, the corrosion protection effect is improved. The anode rod drive device in this invention can switch between output voltage mode and input detection mode, thereby achieving the purpose of detecting changes in system water quality and realizing intelligent adjustment.

[0021] The third technical problem mentioned above is solved by the following technical solution:

[0022] A water heater, comprising:

[0023] One or more processors;

[0024] Memory, used to store one or more programs.

[0025] When the one or more programs are executed by the one or more processors, the one or more processors implement the electronic anode protection method as described above.

[0026] The water heater described in this application implements the electronic anode protection method as described above. First, the operating mode of the anode rod drive device is switched to input detection mode. In input detection mode, the anode rod is used to detect and obtain the initial voltage of the metal inner tank. That is, by reusing the anode rod to detect the initial voltage of the metal inner tank, a reference electrode is not required, reducing production costs and avoiding the influence of scale on detection accuracy, thus improving detection accuracy. Then, the output voltage is obtained based on the initial voltage. Next, the operating mode of the drive device is switched to output voltage mode, and the drive device is controlled to output the output voltage to the anode rod. By obtaining the corresponding output voltage based on the initial voltage, the anti-corrosion protection effect is improved. The operating mode of the anode rod drive device in this invention can switch between output voltage mode and input detection mode, thereby achieving the purpose of detecting changes in system water quality and realizing intelligent adjustment. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a schematic flowchart of an electronic anode protection method provided in one embodiment of this application;

[0029] Figure 2 This is a flowchart illustrating an electronic anode protection method provided in another embodiment of this application;

[0030] Figure 3 This is a flowchart illustrating the electronic anode protection method provided in another embodiment of this application;

[0031] Figure 4 This is a schematic diagram of the structure of an electronic anode system provided in another embodiment of this application;

[0032] Figure 5 This is a schematic diagram of the structure of the electronic anode protection device provided in the embodiments of this application;

[0033] Figure 6 This is a schematic diagram of the structure of a water heater provided in an embodiment of this application. Detailed Implementation

[0034] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0035] Example 1

[0036] Figure 1 This is a first flowchart illustrating the electronic anode protection method provided in this application embodiment. This method can be executed by an electronic anode protection device or a water heater. Figure 1 As shown, the electronic anode protection method may include the following steps:

[0037] S101. Switch the working mode of the anode rod drive device to the input detection mode, and use the anode rod to detect and obtain the initial voltage of the metal inner liner in the input detection mode.

[0038] The input detection mode in this embodiment is a working mode that uses an anode rod to detect and obtain the initial voltage of the metal inner tank. In the input detection mode, the anode rod stops outputting voltage to the metal inner tank of the water storage container. The initial voltage in this embodiment refers to the voltage formed on the metal inner tank when heating the water inside the metal inner tank without the anode rod being in operation.

[0039] The electronic anode system in this embodiment may include at least: a driving device, an anode rod, and a water storage container; wherein, the driving device may include: a controller and a driving circuit; for example, the controller may be a microcontroller. The water storage container includes at least a metal inner liner. In this step, the controller can switch the operating mode of the anode rod's driving device to an input detection mode, and in the input detection mode, use the anode rod to detect and obtain the initial voltage of the metal inner liner.

[0040] Preferably, the driving device can switch the operating mode of the anode rod driving device to the input detection mode within a first predetermined duration of the current cycle, and use the anode rod to detect and obtain the initial voltage of the metal liner in the input detection mode. The current cycle in this embodiment may include two durations: a first predetermined duration and a second predetermined duration; wherein the first predetermined duration corresponds to the initialization phase; and the second predetermined duration corresponds to the normal operation phase; therefore, the first predetermined duration is much shorter than the second predetermined duration. For example, the first predetermined duration can be 2 minutes; and the second predetermined duration can be 60 minutes.

[0041] The anode rod driving device in this embodiment can switch between two operating modes: output voltage mode and input detection mode. The output voltage mode is the operating mode in which the anode rod outputs voltage to the metal inner liner through the water in the storage container; the input detection mode is the operating mode in which the anode rod stops outputting voltage to the metal inner liner. During the initialization phase, the anode rod driving device operates in input detection mode; during the normal operation phase, the anode rod driving device operates in output voltage mode. That is, for a first predetermined duration, the anode rod driving device operates in input detection mode; for a second predetermined duration, the anode rod driving device operates in output voltage mode.

[0042] In this step, the driving device can control the driving device of the anode rod to work in the input detection mode, and use the anode rod to detect and obtain the initial voltage of the metal liner in the input detection mode. Specifically, the following method can be used: detect the instantaneous voltage formed on the metal liner at a preset first time interval within a first predetermined time period; then calculate the average voltage of the metal liner within the first predetermined time period based on the instantaneous voltage formed on the metal liner, and use the average voltage of the metal liner within the first predetermined time period as the initial voltage of the metal liner.

[0043] S102. Obtain the output voltage based on the initial voltage.

[0044] In this embodiment, the output voltage refers to the voltage output by the driving device to the anode rod. In this step, the driving device can control the anode rod driving device to operate in output voltage mode. In output voltage mode, the output voltage corresponding to the voltage of the metal inner liner is obtained. Specifically, the following method can be used: look up the output voltage corresponding to the initial voltage of the metal inner liner in a pre-saved table of correspondence between initial voltage and output voltage; and use the found output voltage as the output voltage corresponding to the initial voltage of the metal inner liner.

[0045] S103. Switch the operating mode of the drive device to the output voltage mode, and control the drive device to output the output voltage to the anode rod.

[0046] In this step, the drive device can switch its operating mode to output voltage mode and control the drive device to output the output voltage to the anode rod.

[0047] Preferably, after the preset cycle ends, the operation of switching the working mode of the anode rod drive device to the input detection mode is repeated, and the initial voltage of the metal inner liner is detected and obtained using the anode rod in the input detection mode. By repeating the above operation, the output voltage can be continuously detected and adjusted to improve the corrosion protection effect.

[0048] The electronic anode protection method proposed in this application first switches the operating mode of the anode rod drive device to input detection mode. In input detection mode, the anode rod is used to detect and obtain the initial voltage of the metal inner tank. That is, by reusing the anode rod, the initial voltage of the metal inner tank can be detected without setting a reference electrode, reducing production costs and avoiding the influence of scale on detection accuracy, thus improving detection accuracy. Then, the output voltage is obtained based on the initial voltage. Next, the operating mode of the drive device is switched to output voltage mode, and the drive device is controlled to output the output voltage to the anode rod. By obtaining the corresponding output voltage based on the initial voltage, the anti-corrosion protection effect is improved. The operating mode of the anode rod drive device in this invention can switch between output voltage mode and input detection mode, thereby achieving the purpose of detecting changes in system water quality and realizing intelligent adjustment.

[0049] Example 2

[0050] Figure 2 This is a schematic diagram of the second process of the electronic anode protection method provided in this application embodiment. Further optimizations and extensions based on the above technical solution are possible, and it can be combined with the various optional implementation methods described above. For example... Figure 2 As shown, the electronic anode protection method may include the following steps:

[0051] S201. Switch the working mode of the anode rod driving device to the input detection mode, and detect the instantaneous voltage formed on the metal liner within a first predetermined time period according to a pre-set first time interval.

[0052] In this step, the driving device can detect the instantaneous voltage formed on the metal liner of the water storage container within a first predetermined time period according to a pre-set first time interval; the first time interval in this embodiment can be 10 seconds.

[0053] S202. Calculate the average voltage of the metal inner liner within a first predetermined time period based on the instantaneous voltage formed on the metal inner liner, and use the average voltage of the metal inner liner within the first predetermined time period as the initial voltage of the metal inner liner.

[0054] In this step, the driving device can calculate the average voltage of the metal inner liner within a first predetermined time period based on the detected instantaneous voltage formed on the metal inner liner. For example, assuming the first predetermined time period is 2 minutes and the first time interval is 10 seconds, the microcontroller can detect 12 instantaneous voltages within the first predetermined time period, and then calculate the average of these 12 instantaneous voltages as the initial voltage of the metal inner liner.

[0055] Specifically, the microcontroller outputs a digital value of pulse width modulation (PWM) voltage, which is then converted into a DC voltage output through an integrating circuit. The duty cycle of the output PWM square wave is related to the voltage of the output DC circuit; therefore, adjusting the duty cycle of the PWM square wave can regulate the output DC voltage value.

[0056] S203. Find the output voltage corresponding to the initial voltage of the metal liner in the pre-saved table of correspondence between initial voltage and output voltage.

[0057] In this step, the drive device can obtain the output voltage corresponding to the initial voltage of the metal inner liner by looking up a table. Specifically, it searches for the output voltage corresponding to the initial voltage of the metal inner liner in a pre-saved table of initial and output voltage correspondences; the found output voltage is then used as the output voltage corresponding to the initial voltage of the metal inner liner. For example, if the initial voltage of the metal inner liner is 0.1V, the corresponding output voltage is 2.5V; if the initial voltage of the metal inner liner is 0.2V, the corresponding output voltage is 2.4V; if the initial voltage of the metal inner liner is 0.3V, the corresponding output voltage is 2.3V; if the initial voltage of the metal inner liner is 0.4V, the corresponding output voltage is 2.3V; and if the initial voltage of the metal inner liner is 0.5V, the corresponding output voltage is 2.2V.

[0058] S204. Use the found output voltage as the output voltage corresponding to the initial voltage of the metal inner liner.

[0059] S205. Switch the operating mode of the drive device to the output voltage mode, and control the drive device to output the output voltage to the anode rod.

[0060] The electronic anode protection method proposed in this application first switches the operating mode of the anode rod drive device to input detection mode. In input detection mode, the anode rod is used to detect and obtain the initial voltage of the metal inner tank. That is, by reusing the anode rod, the initial voltage of the metal inner tank can be detected without setting a reference electrode, reducing production costs and avoiding the influence of scale on detection accuracy, thus improving detection accuracy. Then, the output voltage is obtained based on the initial voltage. Next, the operating mode of the drive device is switched to output voltage mode, and the drive device is controlled to output the output voltage to the anode rod. By obtaining the corresponding output voltage based on the initial voltage, the anti-corrosion protection effect is improved. The operating mode of the anode rod drive device in this invention can switch between output voltage mode and input detection mode, thereby achieving the purpose of detecting changes in system water quality and realizing intelligent adjustment.

[0061] Example 3

[0062] Figure 3 This is a schematic diagram of the third process of the electronic anode protection method provided in this application embodiment. Further optimizations and extensions based on the above technical solution are possible, and it can be combined with the various optional implementation methods described above. For example... Figure 3 As shown, the electronic anode protection method may include the following steps:

[0063] S301. Switch the working mode of the anode rod drive device to the input detection mode, and detect the instantaneous voltage formed on the metal liner within a first predetermined time period according to a pre-set first time interval.

[0064] S302. Calculate the average voltage of the metal inner liner within a first predetermined time period based on the instantaneous voltage formed on the metal inner liner, and use the average voltage of the metal inner liner within the first predetermined time period as the initial voltage of the metal inner liner.

[0065] S303. Determine whether the initial voltage of the metal inner liner is less than or equal to the preset voltage; if yes, execute S304; otherwise, execute S305.

[0066] S304. Switch the operating mode of the anode rod drive device to the protection mode.

[0067] The protection mode in this embodiment refers to a working mode that stops detecting and acquiring the initial voltage of the metal inner tank, and simultaneously stops outputting voltage to the anode rod. The purpose of the drive device entering the protection program is to temporarily stop outputting voltage to the anode rod, and then resume outputting voltage to the anode rod after a period of time, thereby improving the lifespan of the anode rod and saving energy. Whether the initial voltage is less than or equal to the preset voltage can determine whether there is no water in the inner tank or whether the water level has not reached the preset level.

[0068] In a specific embodiment of this application, before the driving device looks up the output voltage corresponding to the initial voltage of the metal inner liner in the pre-saved table of correspondence between initial voltage and output voltage, it can first determine whether the initial voltage of the metal inner liner is less than or equal to a preset voltage. If the initial voltage of the metal inner liner is greater than the preset voltage, the driving device can perform the operation of looking up the output voltage corresponding to the initial voltage of the metal inner liner in the pre-saved table of correspondence between initial voltage and output voltage. If the initial voltage of the metal inner liner is less than or equal to the preset voltage, the driving device can turn off the output and enter the protection program, that is, enter the protection mode.

[0069] Preferably, after the drive device enters the protection mode, it can determine in real time whether the waiting time is equal to the preset first waiting time. If the waiting time is less than the preset first waiting time, the drive device can continue to wait until the waiting time equals the preset first waiting time. At this time, the operation of switching the working mode of the anode rod drive device to the input detection mode is re-executed, that is, the electronic anode protection method described in this application is re-executed. The preset first waiting time in the embodiments of this application can be 1 minute.

[0070] S305. Find the output voltage corresponding to the initial voltage of the metal liner in the pre-saved table of correspondence between initial voltage and output voltage.

[0071] The correspondence table between the initial voltage and the output voltage in the embodiments of this application can be stored in the RAM, ROM or EEPROM of the microcontroller.

[0072] S306. Use the found output voltage as the output voltage corresponding to the initial voltage of the metal inner liner.

[0073] S307. Switch the working mode of the drive device of the metal inner liner to the output voltage mode, and control the drive device to output the output voltage to the anode rod.

[0074] The electronic anode protection method proposed in this application first switches the operating mode of the anode rod drive device to input detection mode. In input detection mode, the anode rod is used to detect and obtain the initial voltage of the metal inner tank. That is, by reusing the anode rod, the initial voltage of the metal inner tank can be detected without setting a reference electrode, reducing production costs and avoiding the influence of scale on detection accuracy, thus improving detection accuracy. Then, the output voltage is obtained based on the initial voltage. Next, the operating mode of the drive device is switched to output voltage mode, and the drive device is controlled to output the output voltage to the anode rod. By obtaining the corresponding output voltage based on the initial voltage, the anti-corrosion protection effect is improved. The operating mode of the anode rod drive device in this invention can switch between output voltage mode and input detection mode, thereby achieving the purpose of detecting changes in system water quality and realizing intelligent adjustment.

[0075] Example 4

[0076] Further optimizations and expansions of the above technical solution are possible, and it can be combined with the various optional embodiments described above. Specifically, after switching the operating mode of the drive device to the output voltage mode and controlling the drive device to output the output voltage to the anode rod, the following steps are also included:

[0077] S308. Obtain the instantaneous current of the circuit loop formed by the anode rod and the metal inner liner according to the preset second time interval.

[0078] In this step, the driving device can also acquire the instantaneous current of the circuit loop formed by the anode rod and the metal inner liner according to a preset second time interval. In this embodiment, the second time interval can be 1 second, that is, the driving device can acquire the instantaneous current of the circuit loop formed by the anode rod and the metal inner liner every 1 second.

[0079] S309. Determine whether the instantaneous current of the circuit loop formed by the anode rod and the metal inner liner is less than or equal to the preset current; if yes, execute S310; otherwise, execute S311.

[0080] In this step, the drive device can determine whether the instantaneous current of the circuit loop formed by the anode rod and the metal inner liner is less than or equal to the preset current; if the instantaneous current of the circuit loop formed by the anode rod and the metal inner liner is less than or equal to the preset current, then S310 is executed; if the instantaneous current formed on the metal inner liner is greater than the preset current, then S311 is executed.

[0081] S310. Switch the operating mode of the anode rod drive device to protection mode.

[0082] In this step, the drive device can determine whether the instantaneous current of the circuit formed by the anode rod and the metal inner liner is less than or equal to a preset current. If the instantaneous current of the circuit formed by the anode rod and the metal inner liner is greater than the preset current, the drive device can obtain the change value of the instantaneous current of the circuit formed by the anode rod and the metal inner liner within a preset time. Then, it adjusts the output voltage according to the change value of the instantaneous current of the circuit formed by the anode rod and the metal inner liner within the preset time. If the instantaneous current of the circuit formed by the anode rod and the metal inner liner is less than or equal to the preset current, the drive device can shut down the output and enter the protection program.

[0083] Preferably, after entering the protection program, the drive device can determine in real time whether the waiting time is equal to the preset first waiting time. If the waiting time is less than the preset first waiting time, the drive device can continue to wait until the waiting time equals the preset first waiting time. At this time, the operation of switching the working mode of the anode rod drive device to the input detection mode is re-executed, that is, the electronic anode protection method described in this application is re-executed. The preset first waiting time in the embodiments of this application can be 1 minute.

[0084] S311. Obtain the change value of the instantaneous current of the circuit loop formed by the anode rod and the metal inner liner within a preset time.

[0085] S312. Adjust the output voltage based on the instantaneous current change of the circuit loop formed by the anode rod and the metal inner liner within a preset time.

[0086] In this step, the driving device can adjust the output voltage based on the change in instantaneous current of the circuit formed by the anode rod and the metal inner liner within a preset time. Specifically, if the change in instantaneous current of the circuit formed by the anode rod and the metal inner liner within the preset time is within a first predetermined range, the driving device can reduce the output voltage by one level; if the change in instantaneous current of the circuit formed by the anode rod and the metal inner liner within the preset time is within a second predetermined range, the driving device can keep the output voltage unchanged; if the change in instantaneous current of the circuit formed by the anode rod and the metal inner liner within the preset time is within a third predetermined range, the driving device can increase the output voltage by one level. In this embodiment, the preset time can be 3 seconds; the first predetermined range can be: the change in current is less than or equal to 3 current units; the second predetermined range can be: the change in current is greater than 3 current units and less than 5 current units; the third predetermined range can be: the change in current is greater than or equal to 5 current units; the current unit can be mA. This embodiment can adjust the output voltage in real time according to the current, further improving the anti-corrosion effect.

[0087] Preferably, in a specific embodiment of this application, after the output voltage is reduced by one level; or after the output voltage is kept constant; or after the output voltage is increased by one level, the drive device can shut down the output and enter the protection program.

[0088] Preferably, after entering the protection program, the drive device can determine in real time whether the waiting time is equal to the preset second waiting time. If the waiting time is less than the preset second waiting time, the drive device can continue to wait until the waiting time equals the preset second waiting time. At this point, the operation of switching the working mode of the anode rod drive device to the input detection mode is re-executed, that is, the electronic anode protection method described in this application is re-executed. In this embodiment, the preset second waiting time can be 60 minutes. After the preset second waiting time, the next cycle is taken as the current cycle, and the above operation is repeated. This allows for continuous detection and adjustment of the output voltage, improving the corrosion protection effect.

[0089] In a specific embodiment of this application, the electronic anode protection system may further include: an amplifier circuit and an output circuit; wherein, the anode rod can be connected to a microcontroller through the amplifier circuit; the microcontroller can also be connected to the anode rod through the output circuit; the anode rod outputs voltage to the microcontroller's AD sampling port through the amplifier circuit; the microcontroller outputs voltage to the anode rod through the output circuit.

[0090] Figure 4 This is a schematic diagram of the structure of an electronic anode system provided in another embodiment of this application. Figure 4 As shown, the electronic anode system may include: a driving device, an anode rod, and a water storage container; wherein, the driving device may include: a voltage output unit, a current detection unit, and a microcontroller; the microcontroller sends a voltage signal to the voltage output unit; the current detection unit sends a current signal to the microcontroller. The water storage container may include: a metal inner liner and an outer shell.

[0091] The electronic anode protection method proposed in this application first switches the operating mode of the anode rod drive device to input detection mode. In input detection mode, the anode rod is used to detect and obtain the initial voltage of the metal inner tank. That is, by reusing the anode rod, the initial voltage of the metal inner tank can be detected without setting a reference electrode, reducing production costs and avoiding the influence of scale on detection accuracy, thus improving detection accuracy. Then, the output voltage is obtained based on the initial voltage. Next, the operating mode of the drive device is switched to output voltage mode, and the drive device is controlled to output the output voltage to the anode rod. By obtaining the corresponding output voltage based on the initial voltage, the anti-corrosion protection effect is improved. The operating mode of the anode rod drive device in this invention can switch between output voltage mode and input detection mode, thereby achieving the purpose of detecting changes in system water quality and realizing intelligent adjustment.

[0092] Example 5

[0093] Figure 5 This is a schematic diagram of the structure of an electronic anode protection device provided in an embodiment of this application. Figure 5 As shown, the electronic anode protection device includes: a switching detection module 501, an acquisition module 502, and a switching control module 503; wherein,

[0094] The switching detection module 501 is used to switch the working mode of the anode rod driving device to the input detection mode, and in the input detection mode, use the anode rod to detect and obtain the initial voltage of the metal liner.

[0095] The acquisition module 502 is used to acquire the output voltage based on the initial voltage;

[0096] The switching control module 503 is used to switch the working mode of the drive device to the output voltage mode and control the drive device to output the output voltage to the anode rod.

[0097] The above-described electronic anode protection device can perform the method provided in any embodiment of this application, and has the corresponding functional modules and beneficial effects for performing the method. Technical details not described in detail in this embodiment can be found in the electronic anode protection method provided in any embodiment of this application.

[0098] Example 6

[0099] Figure 6 This is a schematic diagram of the structure of a water heater provided in an embodiment of this application. Figure 6 A block diagram of an exemplary water heater suitable for implementing embodiments of this application is shown. Figure 6 The water heater 12 shown is merely an example and should not impose any limitations on the functionality and scope of use of the embodiments of this application.

[0100] like Figure 6 As shown, the water heater 12 is represented in the form of a general-purpose computing device. The components of the water heater 12 may include, but are not limited to: one or more processors or processing units 16, system memory 28, and bus 18 connecting different system components (including system memory 28 and processing unit 16).

[0101] Bus 18 represents one or more of several bus architectures, including a memory bus or memory controller, a peripheral bus, a graphics acceleration port, a processor, or a local bus using any of the various bus architectures. For example, these architectures include, but are not limited to, the Industry Standard Architecture (ISA) bus, the Micro Channel Architecture (MAC) bus, the Enhanced ISA bus, the Video Electronics Standards Association (VESA) local bus, and the Peripheral Component Interconnect (PCI) bus.

[0102] The water heater 12 typically includes a variety of computer-readable media. These media can be any available media that can be accessed by the water heater 12, including volatile and non-volatile media, and removable and non-removable media.

[0103] System memory 28 may include computer system readable media in the form of volatile memory, such as random access memory (RAM) 30 and / or cache memory 32. Water heater 12 may further include other removable / non-removable, volatile / non-volatile computer system storage media. By way of example only, storage system 34 may be used to read and write non-removable, non-volatile magnetic media (…). Figure 6 Not shown; usually referred to as a "hard drive"). Although Figure 6 Not shown, a disk drive for reading and writing to a removable non-volatile disk (e.g., a "floppy disk") and an optical disk drive for reading and writing to a removable non-volatile optical disk (e.g., a CD-ROM, DVD-ROM, or other optical media) may be provided. In these cases, each drive may be connected to bus 18 via one or more data media interfaces. Memory 28 may include at least one program product having a set (e.g., at least one) of program modules configured to perform the functions of the embodiments of this application.

[0104] A program / utility 40 having a set (at least one) of program modules 42 may be stored, for example, in memory 28. Such program modules 42 include, but are not limited to, an operating system, one or more application programs, other program modules, and program data. Each or some combination of these examples may include an implementation of a network environment. Program modules 42 typically perform the functions and / or methods described in the embodiments of this application.

[0105] The water heater 12 can also communicate with one or more external devices 14 (e.g., keyboard, pointing device, display 24, etc.), and with one or more devices that enable a user to interact with the water heater 12, and / or with any device that enables the water heater 12 to communicate with one or more other computing devices (e.g., network card, modem, etc.). This communication can be performed via input / output (I / O) interface 22. Furthermore, the water heater 12 can also communicate with one or more networks (e.g., local area network (LAN), wide area network (WAN), and / or public networks, such as the Internet) via network adapter 20. As shown, network adapter 20 communicates with other modules of the water heater 12 via bus 18. It should be understood that, although... Figure 6 As not shown, other hardware and / or software modules can be used in conjunction with the water heater 12, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data backup storage systems.

[0106] The processing unit 16 executes various functional applications and data processing by running programs stored in the system memory 28, such as implementing the electronic anode protection method provided in the embodiments of this application.

[0107] In the specific implementation of the above embodiments, the technical features can be combined in any non-contradictory way. For the sake of brevity, not all possible combinations of the above technical features are described. However, as long as the combination of these technical features is not contradictory, it should be considered to be within the scope of this specification.

[0108] The specific embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of this patent should be determined by the appended claims.

Claims

1. A method for electronic anode protection, characterized in that: The method includes: The operating mode of the anode rod driving device is switched to the input detection mode, and the initial voltage of the metal liner is detected and obtained using the anode rod in the input detection mode. The output voltage is obtained based on the initial voltage; Switch the operating mode of the drive device to the output voltage mode, and control the drive device to output the output voltage to the anode rod; The instantaneous current of the circuit loop formed by the anode rod and the metal inner liner is acquired according to a preset second time interval; the change value of the instantaneous current of the circuit loop formed by the anode rod and the metal inner liner within a preset time period is acquired; and the output voltage is adjusted according to the change value of the instantaneous current of the circuit loop formed by the anode rod and the metal inner liner within a preset time period.

2. The method according to claim 1, characterized in that: In the input detection mode, the initial voltage of the metal liner is detected and obtained using the anode rod, including: The instantaneous voltage formed on the metal liner is detected at a predetermined first time interval within a first predetermined duration. The average voltage of the metal liner during the first predetermined time period is calculated based on the instantaneous voltage formed on the metal liner, and the average voltage of the metal liner during the first predetermined time period is taken as the initial voltage of the metal liner.

3. The method according to claim 1, characterized in that: After detecting and acquiring the initial voltage of the metal liner using the anode rod in the input detection mode, and before switching the operating mode of the drive device to the output voltage mode, the following steps are also included: Determine whether the initial voltage of the metal liner is less than or equal to a preset voltage; If the initial voltage of the metal liner is less than or equal to the preset voltage, the operating mode of the anode rod drive device is switched to protection mode.

4. The method according to claim 1, characterized in that: After acquiring the instantaneous current of the circuit loop formed by the anode rod and the metal liner according to a preset second time interval, the method further includes: Determine whether the instantaneous current of the circuit loop formed by the anode rod and the metal inner liner is less than or equal to a preset current; If the instantaneous current of the circuit loop formed by the anode rod and the metal inner liner is less than or equal to the preset current, the operating mode of the anode rod drive device is switched to protection mode.

5. The method according to claim 1, characterized in that: Adjusting the output voltage based on the change in instantaneous current formed on the metal liner within a preset time period includes: If the change in instantaneous current of the circuit loop formed by the anode rod and the metal liner within the preset time is within the first predetermined range, then the output voltage will be reduced by one level. If the change in instantaneous current of the circuit loop formed by the anode rod and the metal liner within the preset time period is within the second predetermined range, then the output voltage will remain unchanged. If the change in instantaneous current of the circuit loop formed by the anode rod and the metal liner is within a third predetermined range within the preset time, the output voltage will be increased by one level.

6. The method according to claim 1, characterized in that: Obtaining the output voltage corresponding to the initial voltage of the metal liner includes: Find the output voltage corresponding to the initial voltage of the metal liner in the pre-saved table of the correspondence between initial voltage and output voltage; The found output voltage is used as the output voltage corresponding to the initial voltage of the metal liner.

7. The method according to claim 1, characterized in that: The method further includes: After the preset cycle ends, the operation of switching the working mode of the anode rod drive device to the input detection mode is re-executed, and the initial voltage of the metal liner is detected and obtained using the anode rod in the input detection mode.

8. An electronic anode protection device, characterized in that: The device includes: a switching detection module, an acquisition module, and a switching control module; wherein... The switching detection module is used to switch the working mode of the anode rod driving device to the input detection mode, and in the input detection mode, use the anode rod to detect and obtain the initial voltage of the metal liner. The acquisition module is used to acquire the output voltage based on the initial voltage; The switching control module is used to switch the operating mode of the drive device to the output voltage mode and control the drive device to output the output voltage to the anode rod; to acquire the instantaneous current of the circuit loop formed by the anode rod and the metal inner liner according to a preset second time interval; to acquire the change value of the instantaneous current of the circuit loop formed by the anode rod and the metal inner liner within a preset time; and to adjust the output voltage according to the change value of the instantaneous current of the circuit loop formed by the anode rod and the metal inner liner within the preset time.

9. A water heater, characterized in that: include: One or more processors; Memory, used to store one or more programs. When the one or more programs are executed by the one or more processors, the one or more processors implement the electronic anode protection method as described in any one of claims 1 to 7.

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