Method and apparatus for controlling glow discharge, disinfectant preparation apparatus, and dishwasher

Abstract

The application relates to a glow discharge control method and device, a disinfectant preparation device, a dishwasher and a computer readable storage medium. The method comprises: in response to a disinfectant preparation instruction, increasing the operating power of a glow discharge device; acquiring real-time temperature parameters of each temperature detection point; in the case that it is determined that there is an arc discharge state of a discharge electrode according to the temperature parameters of each temperature detection point, reducing the operating power of the glow discharge device; and in the case that it is determined that each discharge electrode is in a normal discharge state according to the temperature parameters, increasing the operating power of each discharge electrode to a target operating power. The method can be used for real-time monitoring of whether each discharge electrode is in an arc, and the energy supply of the arc electrode is reduced when the arc occurs, so that the arc is eliminated in time, the safety of the glow discharge device is improved, and the service life of the discharge electrode is prolonged. The influence of the arc on the glow discharge device is reduced, and the use reliability of the glow discharge device is improved.

Description

Technical Field

[0001] This application relates to the field of electrical equipment technology, and in particular to a glow discharge control method, apparatus, disinfectant preparation equipment, dishwasher, and computer-readable storage medium. Background Technology

[0002] As people's living standards continue to improve, dishwashers and similar appliances have become commonplace in daily life. To improve the cleaning effect of tableware, dishwashers typically employ plasma sterilization technology. This technology utilizes a glow discharge device to generate plasma. The interaction between the active substances in the plasma and water molecules significantly alters the chemical and physical properties of the water, producing a disinfectant solution. This disinfectant solution can destroy the cell membranes and DNA of microorganisms, exhibiting excellent bactericidal and disinfecting effects, thus effectively sterilizing and disinfecting tableware.

[0003] Existing glow discharge devices typically use a high-voltage, high-frequency (generally tens of kilovolts and several kilohertz) alternating power supply applied to the discharge electrodes. They utilize the characteristic that the change in air polarity lags behind the electrode's polarity, causing the air to break down and discharge, resulting in a high-frequency, uniform, and short discharge arc. However, when the conductivity of the air changes, the breakdown of the air can easily lead to a continuous, long, and thick arc, i.e., a streaking discharge state. Sustained streaking can cause problems such as overheating of the device, aging of the insulating materials, and even breakdown, resulting in low reliability of the glow discharge device. Summary of the Invention

[0004] Therefore, it is necessary to provide a glow discharge control method, apparatus, disinfectant preparation equipment, dishwasher, computer-readable storage medium, and computer program product that can improve the reliability of glow discharge devices in addressing the aforementioned technical problems.

[0005] In a first aspect, this application provides a glow discharge control method applied to a disinfectant preparation device. The disinfectant preparation device includes a water storage device, a glow discharge device disposed in the water storage device, and multiple temperature detection points. The discharge area of ​​the glow discharge device includes multiple sequentially arranged discharge electrodes, and the temperature detection range formed by the multiple temperature detection points corresponds to the discharge area. The method includes:

[0006] In response to the disinfectant preparation command, the operating power of the glow discharge device is increased.

[0007] Obtain the real-time temperature parameters of each of the temperature detection points;

[0008] If, based on the temperature parameters of each temperature detection point, it is determined that the discharge electrode is in a state of arc discharge, the operating power of the glow discharge device is reduced.

[0009] When it is determined that all the discharge electrodes are in a normal discharge state based on the temperature parameters, the operating power of the glow discharge device is increased to the target operating power.

[0010] In one embodiment, the method further includes:

[0011] The temperature parameters of each temperature detection point are sorted.

[0012] If the difference between two adjacent temperature parameters is greater than or equal to a first preset arcing temperature threshold, the discharge electrode is determined to be in an arcing discharge state.

[0013] If the difference between any two adjacent temperature parameters is less than the first preset arcing temperature threshold, the discharge electrode is determined to be in a normal discharge state.

[0014] In one embodiment, the method further includes:

[0015] If the difference between the maximum and minimum temperature parameter values ​​among the temperature parameters is greater than or equal to the second preset arcing temperature threshold, the discharge electrode is determined to be in an arcing discharge state.

[0016] If the difference between the maximum temperature parameter value and the minimum temperature parameter value is less than the second preset arcing temperature threshold, then each of the discharge electrodes is determined to be in a normal discharge state.

[0017] In one embodiment, each temperature detection point is configured in a one-to-one correspondence with each discharge electrode; the step of controlling the reduction of the operating power of the glow discharge device when it is determined, based on the temperature parameters of each temperature detection point, that a discharge electrode is in an arcing discharge state includes:

[0018] If, based on the temperature parameters of each of the temperature detection points, it is determined that the discharge electrode is in a state of arcing discharge, then, based on the temperature parameters of each of the temperature detection points, the discharge electrode in which arcing occurs is determined.

[0019] The operating power of the discharge electrode that causes arcing is reduced.

[0020] In one embodiment, controlling the increase of the operating power of the glow discharge device in response to the disinfectant preparation command includes:

[0021] In response to the disinfectant preparation command, the operation of each discharge electrode is controlled to increase from a preset initial power.

[0022] The step of controlling the reduction of the operating power of the glow discharge device when it is determined, based on the temperature parameters of each of the temperature detection points, that the discharge electrode is in a state of arc discharge includes:

[0023] If, based on the temperature parameters of each temperature detection point, it is determined that the discharge electrode is in an arcing discharge state, the operating power of each discharge electrode is controlled to be reduced to the initial power.

[0024] In one embodiment, increasing the operating power of the glow discharge device includes:

[0025] The operating power of the glow discharge device is increased based on a preset power step size.

[0026] Secondly, this application also provides a glow discharge control device for use in a disinfectant preparation equipment. The disinfectant preparation equipment includes a water storage device, a glow discharge device disposed in the water storage device, and multiple temperature detection points. The discharge area of ​​the glow discharge device includes multiple sequentially arranged discharge electrodes, and the temperature detection range formed by the multiple temperature detection points corresponds to the discharge area. The device includes:

[0027] The startup module is used to increase the operating power of the glow discharge device in response to the disinfectant preparation command;

[0028] The parameter acquisition module is used to acquire the real-time temperature parameters of each of the temperature detection points.

[0029] An arcing adjustment module is used to control the operating power of the glow discharge device to decrease when the discharge electrode is determined to be in an arcing discharge state based on the temperature parameters of each of the temperature detection points.

[0030] The power control module is used to control the operating power of the glow discharge device to increase to the target operating power when it is determined that each of the discharge electrodes is in a normal discharge state based on the temperature parameters.

[0031] Thirdly, this application also provides a disinfectant preparation device, comprising: a control system, a water storage device, a glow discharge device disposed in the water storage device, multiple temperature detection points disposed in the water storage device, and temperature sensors disposed at the temperature detection points; the glow discharge device includes a gas channel, an air inlet, multiple discharge electrodes, and multiple discharge chambers, the discharge chambers being disposed within the water storage device, and the discharge electrodes being disposed within the discharge chambers; the discharge chambers are connected to the water storage device and the gas channel, the air inlet being disposed within the gas channel and used to drive gas circulation within the gas channel; the temperature detection range of the temperature sensors at the multiple temperature detection points corresponds to the discharge area, and the area formed by the multiple discharge electrodes arranged sequentially is the discharge area; the air inlet, each of the discharge electrodes, and each of the temperature sensors are all electrically connected to the control system, and the control system is used to execute the method described above.

[0032] Fourthly, this application also provides a dishwasher, including a disinfection chamber and a disinfectant preparation device as described above, wherein the water storage device of the disinfectant preparation device is connected to the disinfection chamber, and the disinfection chamber is used to accommodate the utensils to be disinfected.

[0033] Fifthly, this application also provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, performs the following steps:

[0034] In response to the disinfectant preparation command, the operating power of the glow discharge device is increased.

[0035] Obtain the real-time temperature parameters of each of the temperature detection points;

[0036] If, based on the temperature parameters of each temperature detection point, it is determined that the discharge electrode is in a state of arc discharge, the operating power of the glow discharge device is reduced.

[0037] When it is determined that all the discharge electrodes are in a normal discharge state based on the temperature parameters, the operating power of the glow discharge device is increased to the target operating power.

[0038] Sixthly, this application also provides a computer program product, including a computer program that, when executed by a processor, performs the following steps:

[0039] In response to the disinfectant preparation command, the operating power of the glow discharge device is increased.

[0040] Obtain the real-time temperature parameters of each of the temperature detection points;

[0041] If, based on the temperature parameters of each temperature detection point, it is determined that the discharge electrode is in a state of arc discharge, the operating power of the glow discharge device is reduced.

[0042] When it is determined that all the discharge electrodes are in a normal discharge state based on the temperature parameters, the operating power of the glow discharge device is increased to the target operating power.

[0043] The aforementioned glow discharge control method, apparatus, disinfectant preparation equipment, dishwasher, computer-readable storage medium, and computer program product, in response to a disinfectant preparation command, control the increase of the operating power of the glow discharge device; acquire real-time temperature parameters at each temperature detection point; if, based on the temperature parameters at each temperature detection point, an electrode exhibiting arcing discharge is identified, control the decrease of the operating power of the glow discharge device; if, based on the temperature parameters, all discharge electrodes are determined to be in a normal discharge state, control the increase of the operating power of each discharge electrode to the target operating power. By enabling real-time monitoring of whether arcing occurs at each discharge electrode and reducing the energy supply to the arcing electrode when arcing occurs, arcing is eliminated promptly, improving the safety of the glow discharge device and extending the service life of the discharge electrodes. Therefore, the power of the glow discharge device can gradually increase to the target operating power under normal discharge conditions, reducing the impact of arcing on the glow discharge device and improving its reliability. Attached Figure Description

[0044] To more clearly illustrate the technical solutions in the embodiments of this application or related technologies, the drawings used in the description of the embodiments of this application or related technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0045] Figure 1 This is a schematic diagram of the disinfectant preparation equipment in one embodiment;

[0046] Figure 2 This is a flowchart illustrating a glow discharge control method in one embodiment;

[0047] Figure 3 This is a partial flowchart of a glow discharge control method in one embodiment;

[0048] Figure 4 This is a schematic diagram of a process in one embodiment where, based on the temperature parameters at each temperature detection point, a discharge electrode in an arcing state is determined, and the operating power of the glow discharge device is reduced.

[0049] Figure 5This is a flowchart illustrating the glow discharge control method in another embodiment;

[0050] Figure 6 This is a structural block diagram of a glow discharge control device in one embodiment. Detailed Implementation

[0051] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0052] This application provides a disinfectant preparation device, such as... Figure 1 As shown, the disinfectant preparation equipment includes a water storage device and a glow discharge device disposed within the water storage device. The glow discharge device's discharge area includes multiple discharge chambers and multiple discharge electrodes arranged sequentially. The discharge chambers are located within the water storage device, and the discharge electrodes are disposed within the discharge chambers. The glow discharge device also includes a gas channel and an air inlet. The discharge chambers connect the water storage device and the gas channel, and the air inlet is disposed within the gas channel and used to drive gas circulation within the gas channel.

[0053] The discharge chambers are positioned perpendicular to the bottom of the water storage device (such as a water tank) and concentrated in the middle of the device. The discharge chambers can be made of glass and have tubular installation spaces, which are the areas for glow discharge. Fine holes are provided at the bottom or other locations (such as the sidewalls) of these tubular installation spaces, and each tubular installation space is suitable for housing at least one discharge electrode. The discharge electrodes are capable of glow discharge, and the ionized plasma-active substances enter the water in the storage device through the fine holes. The plasma-active substances interact with water molecules, turning ordinary water into a disinfectant. The specific number and arrangement of the discharge chambers can be determined according to actual conditions; the discharge chambers can be arranged in a row (e.g.,...). Figure 1 As shown in the figure, they can also be arranged in two or more rows, with a discharge electrode in each tubular mounting space.

[0054] As an example, a gas channel is located at the top of the water storage device, and each discharge chamber is connected to the interior of the water storage device and the gas channel. Specifically, the top of the discharge chamber is connected to the gas channel, and the bottom is connected to the liquid inside the water storage device. An air inlet is located within the gas channel and drives gas circulation within the gas channel. The gas circulation direction within the gas channel is shown by the arrow. The air inlet can blow air from top to bottom into the tubular discharge chamber where the electrode is located, keeping the tubular discharge chamber dry. At the same time, it can blow the plasma active material ionized by the electrode into the water in the water storage device through fine holes to achieve disinfectant preparation. Exemplarily, the air inlet can be a device such as an air pump.

[0055] In some embodiments, the disinfectant preparation equipment further includes a water inlet pipe and a water inlet component. The water inlet pipe is connected to a water storage device and serves as a water delivery channel. It is also connected to an external water source (such as a tap water pipe, water tank, or other water source).

[0056] The water inlet is installed inside the water inlet pipe and is used to drive water flow through the water inlet pipe into the water storage device. Specifically, the water storage device can be a water tank, and the water inlet can be a power device such as a water pump. In practical applications, when the water inlet is started (the water pump starts working), a certain pressure is generated, which causes water from an external water source to flow into the water storage device along the water inlet pipe, providing the basic water volume for subsequent disinfectant preparation.

[0057] The water storage device has an inlet on its top or side, which is connected to an inlet pipe, and a drain outlet on its bottom or side for discharging the prepared disinfectant solution. As an example, the disinfectant solution preparation equipment is used in a dishwasher, which includes a disinfection chamber for accommodating the utensils to be disinfected. The drain outlet of the water storage device is connected to the disinfection chamber through a drain pipe. When disinfection is required, a drain pump is activated to quickly discharge the disinfectant solution into the disinfection chamber.

[0058] In some embodiments, the disinfectant preparation device further includes multiple temperature detection points disposed in the water storage device. The temperature detection range formed by the multiple temperature detection points corresponds to the discharge area, and the temperature parameters of the multiple temperature detection points can reflect the temperature change of the discharge electrode in the discharge area.

[0059] In some embodiments, the number of temperature detection points is n (n is a positive integer), and the number of discharge electrodes is 2n+1. The n temperature detection points are arranged sequentially, with each temperature detection point corresponding to a discharge electrode located at an even-numbered position. Exemplarily, the projection of each temperature detection point onto the discharge region overlaps with each discharge cavity located at an even-numbered position, or lies on the straight line containing the discharge cavity. In some embodiments, the number of temperature detection points is n, and the number of discharge electrodes is 2n-1. The n temperature detection points are arranged sequentially, with each temperature detection point corresponding to a discharge electrode located at an odd-numbered position. Exemplarily, the projection of each temperature detection point onto the discharge region overlaps with each discharge cavity located at an odd-numbered position, or lies on the straight line containing the discharge cavity. Still using... Figure 1 For example, with 7 discharge electrodes and 3 temperature detection points, the projection of each temperature detection point onto the discharge region lies on the straight line where each discharge cavity is located in an even-numbered position. With 4 temperature detection points, the projection of each temperature detection point onto the discharge region can overlap with the discharge cavities located in odd-numbered positions.

[0060] In some embodiments, the number of discharge electrodes is 2n, and the number of temperature detection points can be n, with n temperature detection points corresponding to discharge electrodes located at even-numbered / odd-numbered positions.

[0061] The temperature parameter detection method at each temperature detection point can be flexibly set. In some embodiments, a temperature sensor can be set at each temperature detection point to detect the temperature parameter at each point. In other embodiments, a matrix or array of temperature sensors can be used to cover multiple detection points and achieve synchronous acquisition of regional temperature distribution.

[0062] The disinfectant preparation equipment also includes a control system. The water inlet, air inlet, each discharge electrode, and temperature sensor are all electrically connected to the control system. The control system is used to execute the glow discharge control method. When the disinfectant preparation equipment is used in a dishwasher, the control system can use a separate controller or the dishwasher's existing controller; the specific design can be tailored to the actual situation.

[0063] The aforementioned disinfectant preparation equipment can monitor in real time whether arcing occurs at each discharge electrode of the glow discharge device during the disinfectant preparation process. If arcing occurs, the energy supply to the arcing electrode is reduced to eliminate it promptly. This allows the power of the glow discharge device to gradually increase to the target operating power under normal discharge conditions, reducing the impact of arcing on the glow discharge device and improving its reliability and disinfectant preparation efficiency.

[0064] The glow discharge control method provided in this application can be applied to disinfectant preparation equipment. In one exemplary embodiment, the method is described using the control system of the disinfectant preparation equipment as an example. Figure 2 As shown, the glow discharge control method includes steps 202 to 206. Wherein:

[0065] Step 202: In response to the disinfectant preparation command, the operating power of the glow discharge device is increased.

[0066] The disinfectant preparation instructions can be issued by the user or generated by the control system. As an example, the disinfectant preparation equipment includes a human-machine interface (such as a touchscreen) connected to the control system. Users manually input preparation instructions through the interface based on their disinfectant preparation needs. The control system can also connect to terminal devices (such as mobile phones, wearable devices, etc.), allowing users to input preparation instructions via these devices. As another example, the control system automatically generates preparation instructions based on the status of associated equipment (such as the completion of the main washing cycle of a dishwasher) or the current time when a timed disinfection task is scheduled to execute.

[0067] It is understandable that before responding to the disinfectant preparation command, each discharge electrode in the glow discharge device is in a stopped state, i.e., the operating power is 0 or a low standby power. The control system responds to the disinfectant preparation command by increasing the operating power of the glow discharge device; specifically, it can control the power of each discharge electrode to increase synchronously. As an example, the operating power of the glow discharge device increases from a preset initial power. The initial power is the power that ensures that each discharge electrode will not be in an arcing state; its specific value can be set according to specific circumstances.

[0068] Step 204: Obtain the real-time temperature parameters of each temperature detection point.

[0069] The temperature detection range formed by multiple temperature detection points corresponds to the discharge area, and the temperature parameters of these multiple detection points can reflect the temperature changes of the discharge electrodes within the discharge area. Figure 1 Taking the illustrated embodiment as an example, when the temperature of each discharge electrode changes, the temperature parameters of the three temperature detection points will also change. Therefore, the temperature parameters can reflect the temperature change of the discharge electrode.

[0070] It should be noted that during the operation of the discharge electrode, changes in air humidity, impurity content, or electrode surface condition can alter the conductivity of the air. This leads to uneven local electric field distribution, potentially causing the air breakdown path to transform from a uniform, short arc to a continuous, long arc (i.e., arcing). The equivalent resistance of a long, long arc is significantly lower than that of a normal glow discharge's uniform, short arc. Most of its energy is absorbed and converted into Joule heat, resulting in a sharp drop in energy efficiency and reduced disinfectant preparation efficiency. Furthermore, the excessively high temperature of the long, long arc can cause localized overheating within a short period. The temperature of the area corresponding to the arcing electrode (i.e., the arcing electrode) rises rapidly, and this high temperature is quickly conducted through the liquid, causing a rapid increase in the temperature parameters at the corresponding temperature detection point.

[0071] Step 206: Based on the temperature parameters of each temperature detection point, if it is determined that there is a discharge electrode in the arc discharge state, the operating power of the glow discharge device is reduced.

[0072] During the process of increasing the operating power of each discharge electrode, the control system also monitors for arcing by checking the real-time temperature parameters at each temperature detection point. In some embodiments, the control system first determines the maximum and minimum temperature parameter values, then calculates the difference between them. If the difference is greater than or equal to a second preset arcing temperature threshold, the discharge electrode is identified as being in an arcing discharge state; if the difference is less than the second preset arcing temperature threshold, all discharge electrodes are identified as being in a normal discharge state. This is because the temperature distribution of each electrode is uniform (with a small temperature difference) under normal discharge conditions, while arcing can cause significant local overheating. Therefore, the temperature distribution uniformity can be quantified by the range of the temperature detection point parameters (the difference between the maximum and minimum values), accurately determining whether arcing has occurred.

[0073] When arcing occurs, the control system flexibly reduces the operating power of the glow discharge device. In some embodiments, the control system synchronously reduces the operating power of each discharge electrode in the glow discharge device to its initial value, with the overall power of the glow discharge device being the initial power. This ensures the arcing disappears by rapidly reducing the energy supply to the long, thick arc. In other embodiments, the control system employs a step-by-step control strategy to synchronously reduce the operating power of each discharge electrode in the glow discharge device. Specifically, the operating power of each discharge electrode in the glow discharge device is reduced synchronously, with each reduction incrementing by a preset step size. After each step of power reduction, the system controls the electrode to operate stably at the current power for a preset duration (e.g., 5 seconds), while simultaneously collecting temperature parameters at each temperature detection point in real time to determine whether the arcing has been eliminated. If the arcing has not disappeared, the system continues to reduce the power by the preset step size and repeats the above judgment process; until the arcing is confirmed to have disappeared, the control system then controls the temperature of each discharge electrode to rise at the current operating power.

[0074] Step 208: After determining that all discharge electrodes are in normal discharge state based on the temperature parameters, control the operating power of the glow discharge device to increase to the target operating power.

[0075] The target operating power is the operating power that the glow discharge device can achieve under normal discharge conditions, when each discharge electrode operates at the expected target discharge power. The target discharge power of each discharge electrode can be set in combination with factors such as electrode parameters and disinfectant preparation efficiency requirements.

[0076] The control system gradually increases the operating power of each discharge electrode in the glow discharge device from its current value at a preset linear or stepwise rate until it reaches the preset target discharge power. At this point, the operating power of the glow discharge device is the target operating power. During this power increase process, the control system continuously monitors the temperature parameters to detect the occurrence of arcing. If no arcing occurs during the power increase, the power increase is completed and the glow discharge device is controlled to maintain stable operation at the target power. If arcing is detected again during the power increase, step 206 is repeated to ensure a balance between the safe operation of the glow discharge device and the efficiency of disinfectant preparation.

[0077] The aforementioned glow discharge control method, in response to a disinfectant preparation command, increases the operating power of the glow discharge device; acquires real-time temperature parameters at each temperature detection point; and, based on the temperature parameters at each detection point, determines that an electrode is in a state of arcing discharge, controls the operating power of the glow discharge device to decrease; and, based on the temperature parameters, determines that all discharge electrodes are in a normal discharge state, controls the operating power of each discharge electrode to increase to the target operating power. By enabling real-time monitoring of whether arcing occurs at each discharge electrode and reducing the energy supply to the arcing electrode when arcing occurs, and promptly eliminating arcing, the safety of the glow discharge device can be improved, and the service life of the discharge electrodes can be extended. Therefore, the power of the glow discharge device can gradually increase to the target operating power under normal discharge conditions, reducing the impact of arcing on the glow discharge device and improving its reliability.

[0078] In some embodiments, such as Figure 3 As shown, after obtaining the real-time temperature parameters of each temperature detection point, the glow discharge control also includes the following steps 302-306.

[0079] Step 302: Sort the temperature parameters of each temperature detection point.

[0080] The sorting method for each temperature parameter is not limited. For example, the temperature parameters collected at the same time can be sorted from high to low or from low to high.

[0081] Step 304: If the difference between two adjacent temperature parameters is greater than or equal to the first preset arcing temperature threshold, a discharge electrode in arcing discharge state is determined.

[0082] Step 306: If the difference between any two adjacent temperature parameters is less than the first preset arcing temperature threshold, then each discharge electrode is determined to be in a normal discharge state.

[0083] The first preset arcing temperature threshold can be set according to actual conditions, and this embodiment does not limit it. By combining the sorting algorithm and the difference threshold to determine arcing, the detection accuracy can be improved.

[0084] When ambient temperature fluctuations (such as summer or winter operating conditions) or changes in water hardness affect electrolysis efficiency, electrode temperature may change, causing variations in the maximum and minimum temperature values. However, the difference between adjacent temperature detection points will still be less than the preset arcing temperature threshold. When arcing occurs, a momentary high temperature occurs, causing the temperature value of one or two temperature detection points close to the arcing location to rise instantaneously. However, the temperature of detection points farther from the arcing electrode will change with a delay. Therefore, at the current detection moment, at least two temperature parameters must be adjacent with a temperature difference greater than or equal to the first preset arcing temperature threshold. This reduces the risk of false positives or false negatives, improving detection sensitivity and accuracy.

[0085] Specifically, the temperature difference between two adjacent temperature parameters can be calculated separately, and each temperature difference can be compared with a first preset arcing temperature threshold. If there is a temperature difference greater than or equal to the first preset arcing temperature threshold, an arcing electrode in arcing discharge state is determined to exist; if each temperature difference is less than the first preset arcing temperature threshold, it is determined that there is no arcing electrode, and each discharge electrode is in normal discharge state.

[0086] In some embodiments, the temperature parameters can be calculated sequentially from high to low, and the difference between adjacent temperature parameters can be determined to determine whether the temperature difference is greater than or equal to a first preset arcing temperature threshold. For example, there are 7 temperature detection points, and the temperature parameters of each detection point are represented as T7, T6, T5, T4, T3, T2, and T1 after being sorted from high to low. First, the first temperature difference between T7 and T6 is calculated and compared with the first preset arcing temperature threshold. If the first temperature difference is greater than or equal to the first preset arcing temperature threshold, an arcing electrode is determined to exist. If the first temperature difference is less than the first preset arcing temperature threshold, the second temperature difference between T6 and T5 is calculated to determine whether it is greater than or equal to the first preset arcing temperature threshold. If the second temperature difference is greater than or equal to the first preset arcing temperature threshold, an arcing electrode is determined to exist. If the second temperature difference is less than the first preset arcing temperature threshold, then the third temperature difference between T5 and T4 is calculated and compared with the first preset arcing temperature threshold. This process continues until a temperature difference is greater than or equal to the first preset arcing temperature threshold, at which point an arcing electrode is determined to exist. Alternatively, if the difference between any two adjacent temperature parameters in each sorted sequence is less than the first preset arcing temperature threshold, then an arcing electrode is determined to not exist.

[0087] In an optional embodiment, such as Figure 1As shown, during the process of controlling the power increase of the glow discharge device, the control system acquires the temperature parameters of three temperature detection points at a fixed detection time (e.g., 0.5S). The temperature values ​​of the three temperature detection points are sorted from low to high, assuming that they are T1, T2, and T3 respectively. The control system can determine whether the discharge state is normal discharge or arc discharge based on the following relationship table (Table 1), where △T represents the first preset arc temperature threshold.

[0088] Specifically, firstly, the first temperature difference between T3 and T2 is calculated and compared with a first preset arcing temperature threshold ΔT. If the first temperature difference is greater than or equal to the first preset arcing temperature threshold ΔT, then an arcing electrode is confirmed to exist. If the first temperature difference is less than the first preset arcing temperature threshold ΔT, then a second temperature difference between T3 and T2 is calculated. If the second temperature difference is greater than or equal to the first preset arcing temperature threshold ΔT, then an arcing electrode is confirmed to exist. If the second temperature difference is also less than the first preset arcing temperature threshold, then no arcing electrode is confirmed to exist, and all discharge electrodes are in a normal discharge state.

[0089] Table 1

[0090]

[0091] When arcing occurs, the temperature at each detection point gradually changes during heat conduction. The temperature at detection points closer to the arcing location will rise preferentially, while the temperature at other detection points farther from the arcing location will change the slowest. Therefore, by first determining whether the temperature difference between the highest temperature parameter and its adjacent temperature parameters exceeds a first preset arcing temperature threshold, arcing can be quickly identified, thereby rapidly reducing the power of the glow discharge device.

[0092] Considering the heat generated by arcing during the detection period, conduction within the liquid may cause the temperature parameters at multiple temperature detection points to approach each other. However, the concentrated heat release at the arcing location disrupts the uniformity of temperature distribution within the water storage device, creating a temperature gradient. Even if heat conduction causes some detection points to converge in temperature, significant local temperature differences will still exist. Therefore, if the difference between two consecutively adjacent temperature parameters is greater than or equal to the first preset arcing temperature threshold, it can be determined that a discharge electrode in an arcing discharge state exists.

[0093] In some embodiments, after determining the presence of arcing in step 304, the control system can further acquire the real-time temperature parameters of each temperature detection point and repeat steps 302 and 304. If the continuous judgment results all indicate the presence of an arcing electrode, then a discharge electrode in an arcing discharge state is determined to exist, thereby reducing the possibility of misjudgment due to accidental factors in a single judgment and improving the accuracy of arcing judgment.

[0094] In some embodiments, the number of temperature detection points is equal to the number of discharge electrodes, and each temperature detection point is set up in a one-to-one correspondence with each discharge electrode to collect the temperature of each discharge electrode separately. For example... Figure 4 As shown, step 206 includes steps 402 and 404.

[0095] Step 402: If the discharge electrode in arcing discharge state is determined based on the temperature parameters of each temperature detection point, the discharge electrode in which arcing occurs is determined based on the temperature parameters of each temperature detection point.

[0096] In this embodiment, the method for determining the discharge electrode in arc discharge state based on the temperature parameters of each temperature detection point is not limited. It can be determined by using steps 302 and 304, or by determining the discharge electrode in arc discharge state when the difference between the maximum and minimum temperature parameter values ​​is greater than or equal to the second preset arc discharge temperature threshold.

[0097] When an arcing discharge electrode is identified, the control system further determines the arcing electrode based on the temperature parameters at each temperature detection point. As an example, the electrode corresponding to the highest temperature parameter value among all temperature parameters is identified as the arcing electrode. It should be noted that there is usually only one arcing electrode; by identifying the electrode corresponding to the highest temperature parameter value, the arcing electrode can be quickly located. As another example, the electrode corresponding to the temperature parameter with a value exceeding a certain threshold can be identified as the arcing electrode. By reducing the energy supply to the excessively hot discharge electrode, it helps to quickly restore temperature uniformity within the water storage device and improves the disinfectant preparation effect.

[0098] Step 404: Control the operating power of the discharge electrode that is arcing to be reduced.

[0099] In this embodiment, controlling the reduction of the operating power of the glow discharge device specifically includes: reducing the operating power of the discharge electrode where arcing occurs, while keeping the operating power of the discharge arc in other normal discharge states unchanged. There is no single way to reduce the operating power of the discharge electrode where arcing occurs; it can be done by directly reducing the operating power of the discharge electrode where arcing occurs to its initial power, or by using a gradual control strategy to gradually reduce the operating power of the arcing electrode.

[0100] In the above embodiments, by locating the discharge electrode where arcing occurs and reducing the power of that electrode instead of reducing the load on all electrodes in the system, the local arcing state can be quickly suppressed, and the impact of the overall power reduction on the preparation of disinfectant can be improved, significantly enhancing the reliability of the glow discharge device.

[0101] Furthermore, after determining that the arcing of the discharge electrode has disappeared, the control system will also control the power of the discharge electrode to increase to the same level as the power of other discharge electrodes, and then control the power of each discharge electrode to increase synchronously until the operating power of the glow discharge device increases to the target operating power.

[0102] In some embodiments, the step of controlling the increase of the operating power of the glow discharge device includes the following steps:

[0103] The operating power of the glow discharge device is controlled by increasing a preset power step size.

[0104] In this embodiment, the operating power of the glow discharge device is gradually increased at a step rate, with each step being a preset power step size. Specifically, the control system adjusts the duty cycle of the PWM (Pulse Width Modulation) signal of the power control module by increasing it by a fixed step size (e.g., 3%, 5%) to increase the operating power of each discharge electrode of the glow discharge device, with each increase being by a preset power step size (e.g., 3%, 5%). After each step power increase, the control electrode operates stably at the current power for a period of time (e.g., 10 seconds), while simultaneously collecting temperature parameters at each temperature detection point in real time to determine whether arcing has occurred. If no arcing occurs, the power continues to increase by the preset step size, and the above judgment process is repeated until the operating power of the glow discharge device reaches the target operating power. It can be understood that if arcing is detected during the power increase process, the control system can control the operating power of the glow discharge device to decrease, and the power increase process will resume after the arcing disappears.

[0105] In this embodiment, the operating power of the glow discharge device is controlled by increasing the preset power step size, which can match the power change process with the thermal inertia of the electrode and the gas ionization response time, improve the arcing phenomenon caused by power sudden change, and enhance the operational reliability and safety of the glow discharge device.

[0106] In some embodiments, after the glow discharge device reaches the target operating power, the control system further controls the glow discharge device to operate at that power for a preset stabilization period (e.g., 1 minute). Within this preset stabilization period, if the temperature parameters at each temperature detection point determine that all discharge electrodes are in a normal discharge state, the glow discharge device is considered to have reached a stable discharge state. The control system also adjusts the PID (proportional P, integral I, derivative D) parameters based on the power change values ​​of each discharge electrode and the target operating power, and outputs a control signal (PWM duty cycle) to the power control module to stabilize its output power within the error range of the target operating power, so that the material produced by the discharge achieves the desired effect.

[0107] To better understand the above embodiments, the following detailed explanation is provided with reference to an optional embodiment. In one embodiment, as... Figure 5 As shown, the glow discharge control method includes:

[0108] The control system starts and continuously operates the air intake component (i.e., the air pump) to ensure that no water enters the discharge chamber during the disinfectant preparation process. It then starts the water intake component (i.e., the water pump) to begin filling the water storage device through the water inlet pipe. After water filling is complete, the water pump is shut off. Next, the system starts the glow discharge device and outputs an initial PWM signal, causing the power control module to output initial power, controlling the glow discharge device to operate at the initial power, and each discharge electrode to perform air discharge at the initial discharge power.

[0109] Determine whether the operating power of the glow discharge device has reached the target operating power. If not, enter the power increase control process, increase the PWM duty cycle of the power control module by a fixed step (e.g., 3%, 5%), and control the operating power of the glow discharge device to increase by a fixed step. At this time, the operating power of each discharge electrode increases synchronously with the phase step. Run under this control duty cycle for a period of time (10S).

[0110] During this process, the control system also acquires real-time temperature parameters from each temperature detection point and sorts these parameters. Figure 1 Taking the illustrated embodiment as an example, the temperature values ​​of the three temperature detection points are sorted from low to high, assuming that they are T1, T2, and T3 respectively. The control system can determine whether the discharge state is normal discharge or arcing discharge based on Table 1.

[0111] If an arcing electrode is detected, the operating power of the glow discharge device is reduced to the initial power, and each discharge electrode operates at the initial discharge power.

[0112] If no arcing electrode is detected, the power increase control process continues until the glow discharge device reaches the target operating power. The control system also controls the glow discharge device to operate at this power for a preset stabilization time (e.g., 1 minute). Within the preset stabilization time, if the temperature parameters at each temperature detection point determine that all discharge electrodes are in a normal discharge state, the glow discharge device is considered to have reached a stable discharge state. The control system adjusts the PID (proportional P, integral I, derivative D) parameters based on the power change values ​​of each discharge electrode and the target operating power, and outputs a control signal (PWM duty cycle) to the power control module to stabilize its output power within the error range of the target operating power, so that the substance produced by the discharge achieves the required effect. The disinfectant preparation is considered complete when the stable discharge time reaches the preset total discharge time, and the glow discharge device is stopped.

[0113] The above-mentioned glow discharge control method enables the monitoring of glow discharge status. When the arcing discharge status is determined based on the temperature distribution, the input power of the discharge electrode is adjusted to eliminate arcing in a timely manner, thereby ensuring the safety of the discharge device and extending the service life of the discharge electrode.

[0114] It should be understood that although the steps in the flowcharts of the embodiments described above are shown sequentially according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some steps in the flowcharts of the embodiments described above may include multiple steps or multiple stages. These steps or stages are not necessarily completed at the same time, but can be executed at different times. The execution order of these steps or stages is not necessarily sequential, but can be performed alternately or in turn with other steps or at least some of the steps or stages of other steps.

[0115] Based on the same inventive concept, this application also provides a glow discharge control device for implementing the glow discharge control method described above. The solution provided by this device is similar to the solution described in the above method; therefore, the specific limitations in one or more glow discharge control device embodiments provided below can be found in the limitations of the glow discharge control method described above, and will not be repeated here.

[0116] In one exemplary embodiment, such as Figure 6 As shown, a glow discharge control device is provided for a disinfectant preparation apparatus. The disinfectant preparation apparatus includes a water storage device, a glow discharge device disposed in the water storage device, and multiple temperature detection points. The discharge area of ​​the glow discharge device includes multiple sequentially arranged discharge electrodes, and the temperature detection range formed by the multiple temperature detection points corresponds to the discharge area. The device includes: a start-up module 602, a parameter acquisition module 604, an arc adjustment module 606, and a power increase control module 608, wherein:

[0117] The startup module 602 is used to increase the operating power of the glow discharge device in response to the disinfectant preparation command.

[0118] The parameter acquisition module 604 is used to acquire the real-time temperature parameters of each temperature detection point.

[0119] The arcing adjustment module 606 is used to control the reduction of the operating power of the glow discharge device when the discharge electrode is determined to be in an arcing discharge state based on the temperature parameters of each temperature detection point.

[0120] The power control module 608 is used to control the operating power of the glow discharge device to increase to the target operating power when all discharge electrodes are determined to be in a normal discharge state based on various temperature parameters.

[0121] In some embodiments, the arc adjustment module 606 is also used to sort the temperature parameters of each temperature detection point;

[0122] If the difference between two adjacent temperature parameters is greater than or equal to the first preset arcing temperature threshold, a discharge electrode in arcing discharge state is determined.

[0123] If the difference between any two adjacent temperature parameters is less than the first preset arcing temperature threshold, the discharge electrode is determined to be in a normal discharge state.

[0124] In some embodiments, the arcing adjustment module 606 is further configured to determine a discharge electrode in arcing discharge state when the difference between the maximum and minimum temperature parameter values ​​among the various temperature parameters is greater than or equal to a second preset arcing temperature threshold.

[0125] If the difference between the maximum and minimum temperature parameter values ​​is less than the second preset arcing temperature threshold, each discharge electrode is determined to be in a normal discharge state.

[0126] In some embodiments, the arcing adjustment module 606 is further configured to, when determining a discharge electrode in an arcing discharge state based on the temperature parameters of each temperature detection point, determine the discharge electrode in which arcing occurs based on the temperature parameters of each temperature detection point; and control the operating power of the discharge electrode in which arcing occurs to be reduced.

[0127] In some embodiments, the startup module 602 is further configured to, in response to a disinfectant preparation command, control the operation of each discharge electrode to increase from a preset initial power.

[0128] The arcing adjustment module 606 is also used to control the operating power of each discharge electrode to be reduced to the initial power when the discharge electrode is determined to be in an arcing discharge state based on the temperature parameters of each temperature detection point.

[0129] In some embodiments, the power control module 608 is further configured to control the increase of the operating power of the glow discharge device based on a preset power step size.

[0130] Each module in the aforementioned glow discharge control device can be implemented entirely or partially through software, hardware, or a combination thereof. These modules can be embedded in the processor of a computer device in hardware form or independent of it, or stored in the memory of a computer device in software form, so that the processor can call and execute the operations corresponding to each module.

[0131] In one embodiment, a dishwasher is provided, including a disinfection chamber and a disinfectant preparation device. The disinfectant preparation device can be configured as described in the above embodiments, and will not be repeated here. The water storage device of the disinfectant preparation device is connected to the disinfection chamber, which is used to accommodate the utensils to be disinfected.

[0132] In some embodiments, after the dishwasher's sanitizing wash function is activated, the dishwasher begins to execute a regular washing program, while the sanitizing solution preparation device also begins to execute a sanitizing solution preparation program to prepare the required sanitizing solution. After the regular washing program (fixed time, e.g., 1 hour) is completed, the dishwasher enters the sanitizing wash step, using the sanitizing solution prepared in the sanitizing solution preparation device to complete the sanitizing of the tableware, until the sanitizing wash program ends.

[0133] In one embodiment, a computer-readable storage medium is provided having a computer program stored thereon, the computer program performing the following steps when executed by a processor:

[0134] In response to the disinfectant preparation command, the operating power of the glow discharge device is increased.

[0135] Obtain the real-time temperature parameters of each of the temperature detection points;

[0136] If, based on the temperature parameters of each temperature detection point, it is determined that the discharge electrode is in a state of arc discharge, the operating power of the glow discharge device is reduced.

[0137] When it is determined that all the discharge electrodes are in a normal discharge state based on the temperature parameters, the operating power of the glow discharge device is increased to the target operating power.

[0138] In one embodiment, when the computer program is executed by a processor, it also performs the following steps:

[0139] The temperature parameters of each temperature detection point are sorted.

[0140] If the difference between two adjacent temperature parameters is greater than or equal to a first preset arcing temperature threshold, the discharge electrode is determined to be in an arcing discharge state.

[0141] If the difference between any two adjacent temperature parameters is less than the first preset arcing temperature threshold, the discharge electrode is determined to be in a normal discharge state.

[0142] In one embodiment, when the computer program is executed by a processor, it also performs the following steps:

[0143] If the difference between the maximum and minimum temperature parameter values ​​among the temperature parameters is greater than or equal to the second preset arcing temperature threshold, the discharge electrode is determined to be in an arcing discharge state.

[0144] If the difference between the maximum temperature parameter value and the minimum temperature parameter value is less than the second preset arcing temperature threshold, then each of the discharge electrodes is determined to be in a normal discharge state.

[0145] In one embodiment, when the computer program is executed by a processor, it also performs the following steps:

[0146] If, based on the temperature parameters of each temperature detection point, it is determined that a discharge electrode is in a state of arcing discharge, the discharge electrode in which arcing occurs is determined based on the temperature parameters of each temperature detection point; and the operating power of the discharge electrode in which arcing occurs is controlled to be reduced.

[0147] In one embodiment, when the computer program is executed by the processor, it further performs the following steps: controlling the operating power of the glow discharge device to increase based on a preset power step size.

[0148] In one embodiment, a computer program product is provided, including a computer program that, when executed by a processor, implements the steps in the above method embodiments.

[0149] Those skilled in the art will understand that all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer-readable storage medium, and when executed, it can include the processes of the embodiments of the above methods. Any references to memory, databases, or other media used in the embodiments provided in this application can include at least one of non-volatile memory and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM). The databases involved in the embodiments provided in this application may include at least one type of relational database and non-relational database. Non-relational databases may include, but are not limited to, blockchain-based distributed databases. The processors involved in the embodiments provided in this application may be general-purpose processors, central processing units, graphics processing units, digital signal processors, programmable logic devices, quantum computing-based data processing logic devices, artificial intelligence (AI) processors, etc., and are not limited to these.

[0150] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this application.

[0151] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this application should be determined by the appended claims.

Claims

1. A glow discharge control method, characterized in that, The method is applied to a disinfectant preparation device, which includes a water storage device, a glow discharge device disposed in the water storage device, and multiple temperature detection points. The discharge area of ​​the glow discharge device includes multiple sequentially arranged discharge electrodes, and the temperature detection range formed by the multiple temperature detection points corresponds to the discharge area. In response to the disinfectant preparation command, the operating power of the glow discharge device is increased. Obtain the real-time temperature parameters of each of the temperature detection points; If, based on the temperature parameters of each temperature detection point, it is determined that the discharge electrode is in a state of arc discharge, the operating power of the glow discharge device is reduced. When it is determined that all the discharge electrodes are in a normal discharge state based on the temperature parameters, the operating power of the glow discharge device is increased to the target operating power.

2. The method according to claim 1, characterized in that, The method further includes: The temperature parameters of each temperature detection point are sorted. If the difference between two adjacent temperature parameters is greater than or equal to a first preset arcing temperature threshold, the discharge electrode is determined to be in an arcing discharge state. If the difference between any two adjacent temperature parameters is less than the first preset arcing temperature threshold, the discharge electrode is determined to be in a normal discharge state.

3. The method according to claim 1, characterized in that, The method further includes: If the difference between the maximum and minimum temperature parameter values ​​among the temperature parameters is greater than or equal to the second preset arcing temperature threshold, the discharge electrode is determined to be in an arcing discharge state. If the difference between the maximum temperature parameter value and the minimum temperature parameter value is less than the second preset arcing temperature threshold, then each of the discharge electrodes is determined to be in a normal discharge state.

4. The method according to claim 1, characterized in that, Each of the temperature detection points is set in a one-to-one correspondence with each of the discharge electrodes; the step of controlling the reduction of the operating power of the glow discharge device when it is determined, based on the temperature parameters of each of the temperature detection points, that a discharge electrode is in an arc discharge state includes: If, based on the temperature parameters of each of the temperature detection points, it is determined that the discharge electrode is in a state of arcing discharge, then, based on the temperature parameters of each of the temperature detection points, the discharge electrode in which arcing occurs is determined. The operating power of the discharge electrode that causes arcing is reduced.

5. The method according to claim 1, characterized in that, The step of increasing the operating power of the glow discharge device in response to the disinfectant preparation command includes: In response to the disinfectant preparation command, the operation of each discharge electrode is controlled to increase from a preset initial power. The step of controlling the reduction of the operating power of the glow discharge device when it is determined, based on the temperature parameters of each of the temperature detection points, that the discharge electrode is in a state of arc discharge includes: If, based on the temperature parameters of each temperature detection point, it is determined that the discharge electrode is in an arcing discharge state, the operating power of each discharge electrode is controlled to be reduced to the initial power.

6. The method according to claim 1, characterized in that, The control of increasing the operating power of the glow discharge device includes: The operating power of the glow discharge device is increased based on a preset power step size.

7. A glow discharge control device, characterized in that, An apparatus for preparing disinfectant solutions is provided, comprising a water storage device, a glow discharge device disposed within the water storage device, and multiple temperature detection points. The discharge area of ​​the glow discharge device includes multiple sequentially arranged discharge electrodes, and the temperature detection range formed by the multiple temperature detection points corresponds to the discharge area. The apparatus includes: The startup module is used to increase the operating power of the glow discharge device in response to the disinfectant preparation command; The parameter acquisition module is used to acquire the real-time temperature parameters of each of the temperature detection points. An arcing adjustment module is used to control the operating power of the glow discharge device to decrease when the discharge electrode is determined to be in an arcing discharge state based on the temperature parameters of each of the temperature detection points. The power control module is used to control the operating power of the glow discharge device to increase to the target operating power when it is determined that each of the discharge electrodes is in a normal discharge state based on the temperature parameters.

8. A disinfectant preparation device, characterized in that, include: The system comprises a control system, a water storage device, a glow discharge device disposed in the water storage device, multiple temperature detection points disposed in the water storage device, and temperature sensors disposed at the temperature detection points; the glow discharge device includes a gas channel, an air inlet, multiple discharge electrodes, and multiple discharge chambers, wherein the discharge chambers are disposed within the water storage device, and the discharge electrodes are disposed within the discharge chambers; The discharge chamber is connected to the water storage device and the gas channel. The air inlet is disposed in the gas channel and is used to drive the gas circulation in the gas channel. The temperature detection range of the temperature sensors at multiple temperature detection points corresponds to the discharge area. The area formed by the sequential arrangement of the multiple discharge electrodes is the discharge area. The air inlet, each of the discharge electrodes, and each of the temperature sensors are all electrically connected to the control system. The control system is used to execute the method as described in any one of claims 1-6.

9. A dishwasher, characterized in that, It includes a disinfection chamber and a disinfectant preparation device as described in claim 8, wherein the water storage device of the disinfectant preparation device is connected to the disinfection chamber, and the disinfection chamber is used to accommodate the utensils to be disinfected.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by a processor, it implements the steps of the method according to any one of claims 1 to 6.

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