Water purifier system

Abstract

The invention provides a water purifier system. The system comprises a water purifier, a temperature detection device, an ultrasonic cleaning device and a controller, the water purifier comprises a filter element, the temperature detection device is used for detecting the temperature of the filter element, the ultrasonic cleaning device is used for cleaning the filter element, and the controller is used for obtaining, the current temperature and the initial temperature of the filter element are obtained through a temperature detection equipment sensor, and whether the current temperature is smaller than a safe temperature threshold value or not is determined; a calculation step: calculating a difference value between the current temperature and the initial temperature at least under the condition that the current temperature is smaller than a safe temperature threshold value to obtain a temperature difference value; and a determination step: determining whether the temperature difference value is greater than or equal to a preset temperature difference, and when the temperature difference value of the filter element is greater than or equal to the preset temperature difference, determining that the filter element is clean and controlling the ultrasonic cleaning equipment to stop working. The system solves the problem that whether the ultrasonic cleaning filter element achieves the expected cleaning effect or not cannot be accurately judged in the prior art.

Description

Technical Field

[0001] The present application relates to the field of water purifier filter cleaning, and more specifically, to a water purifier system. Background Art

[0002] Filter cleaning is one of the core functions of a water purifier and is also the key to ensuring that all parameters of water quality are good. Conventional filter cleaning uses water to flush (wash) the filter to clean the dirt and impurities on the surface of the filter. However, this method will cause a certain amount of water waste, and the cleaning effect is limited when the water pressure is insufficient.

[0003] The new solution is to use ultrasound to clean the filter element. This method is more effective than flushing the filter element alone, but there are also the following problems in actual product application: First, it is necessary to monitor the reliability of the ultrasonic control device during operation, because ultrasound will generate energy when it acts on the filter element. If there is no water in the filter element, the temperature of the filter element will rise, and excessive temperature will affect the performance of the filter element. Second, there is a lack of effective detection methods for the effect of ultrasonic cleaning of the filter element. The conventional method of relying solely on flushing time has defects: if the ultrasonic device fails (including device damage or line short circuit, etc., resulting in failure to work properly), the entire machine cannot effectively identify it. Although the processor sends a signal to start the ultrasonic device, the actual device does not work as expected and does not achieve the effect of cleaning the filter element.

[0004] Therefore, there is an urgent need for a system that can accurately determine whether the ultrasonic cleaning filter element has achieved the expected cleaning effect. Summary of the invention

[0005] The main purpose of the present application is to provide a water purifier system to at least solve the problem in the prior art that it is impossible to accurately judge whether the ultrasonic cleaning filter element has achieved the expected cleaning effect.

[0006] In order to achieve the above-mentioned purpose, according to one aspect of the present application, a water purifier system is provided, including a water purifier, a temperature detection device, an ultrasonic cleaning device and a controller, the water purifier including a filter element, the temperature detection device is used to detect the temperature of the filter element, the ultrasonic cleaning device is used to clean the filter element, and the controller is used to: an acquisition step, controlling the operation of the ultrasonic cleaning device, and acquiring the current temperature and initial temperature of the filter element through the temperature detection device, and determining whether the current temperature is less than a safety temperature threshold; a calculation step, at least when the current temperature is less than the safety temperature threshold, calculating the difference between the current temperature and the initial temperature to obtain a temperature difference; a determination step, determining whether the temperature difference is greater than or equal to a preset temperature difference, and when the temperature difference of the filter element is greater than or equal to the preset temperature difference, determining that the filter element is clean and controlling the ultrasonic cleaning device to end the operation.

[0007] In order to achieve the above-mentioned purpose, according to one aspect of the present application, a water purifier system is provided, including a water purifier, a temperature detection device, an ultrasonic cleaning device and a controller, the water purifier including a filter element, the temperature detection device is used to detect the temperature of the filter element, the ultrasonic cleaning device is used to clean the filter element, and the controller is used to: an acquisition step, controlling the operation of the ultrasonic cleaning device, and acquiring the current temperature and initial temperature of the filter element through the temperature detection device, and determining whether the current temperature is less than a safety temperature threshold; a calculation step, at least when the current temperature is less than the safety temperature threshold, calculating the difference between the current temperature and the initial temperature to obtain a temperature difference; a determination step, determining whether the temperature difference is greater than or equal to a preset temperature difference, and when the temperature difference of the filter element is greater than or equal to the preset temperature difference, determining that the filter element is clean and controlling the ultrasonic cleaning device to end the operation.

[0008] Optionally, at least when the current temperature is less than the safety temperature threshold, the difference between the current temperature and the initial temperature is calculated to obtain the temperature difference, including: when the current temperature is less than the safety temperature threshold, determining whether the working time of the ultrasonic cleaning equipment is less than a preset time; when the working time is less than the preset time, calculating the difference between the current temperature and the initial temperature to obtain the temperature difference.

[0009] Optionally, the controller is also used to: when the current temperature is greater than or equal to the safety temperature threshold, determine that the ultrasonic cleaning equipment is operating abnormally, control the ultrasonic cleaning equipment to end operation, and control the water purifier to issue a reminder.

[0010] Optionally, controlling the water purifier to issue the reminder includes at least one of the following: controlling the indicator light of the water purifier to flash; controlling the buzzer of the water purifier to alarm; controlling the APP connected to the water purifier to issue a pop-up reminder.

[0011] Optionally, the controller is further used to: control the ultrasonic cleaning equipment to end its operation when the operating time is not less than the preset time.

[0012] Optionally, controlling the ultrasonic cleaning device to operate includes: controlling the ultrasonic cleaning device to operate at least when the second operating time of the water purifier reaches a second preset time.

[0013] Optionally, the ultrasonic cleaning equipment is installed inside or outside the filter element.

[0014] Optionally, the ultrasonic cleaning device is installed on the outer surface of the filter element.

[0015] Optionally, the temperature detection device is installed on a water flow path of the filter element and is communicatively connected with the controller, and the water flow path is a flow path of water in the water purifier.

[0016] Optionally, there are multiple temperature detection devices, which are distributed at intervals on the water flow path of the filter element. The current temperature of the filter element is obtained through the temperature detection devices, including: obtaining the temperatures detected by multiple temperature detection devices to obtain the temperatures of multiple positions of the filter element; according to (a1x1+a2x2+…+anxn) / n, obtaining the current temperature of the filter element, wherein n is the number of the temperature detection devices, x1 is the temperature obtained by the temperature detection device closest to the filter element, a1 is the weight corresponding to the temperature obtained by a predetermined temperature detection device, x2 to xn are the temperatures obtained by the temperature detection devices other than the temperature detection device closest to the filter element, a2 to an are the weights corresponding to the temperatures obtained by the temperature detection devices other than the predetermined temperature detection devices, x2 to xn correspond one-to-one to a2 to an, a1 is greater than any weight value from a2 to an, and the predetermined temperature detection device is the temperature detection device with the shortest distance from the filter element.

[0017] Applying the technical solution of the present application, a water purifier system includes a water purifier, a temperature detection device, an ultrasonic cleaning device and a controller, wherein the water purifier includes a filter element, the temperature detection device is used to detect the temperature of the filter element, and the ultrasonic cleaning device is used to clean the filter element. First, the ultrasonic cleaning device is controlled to work, and the current temperature and initial temperature of the filter element are obtained through the temperature detection device, and it is determined whether the current temperature is less than a safety temperature threshold; secondly, at least when the current temperature is less than the safety temperature threshold, the difference between the current temperature and the initial temperature is calculated to obtain a temperature difference; finally, it is determined whether the temperature difference is greater than or equal to a preset temperature difference. When the temperature difference of the filter element is greater than or equal to the preset temperature difference, it is determined that the filter element is clean and the ultrasonic cleaning device is controlled to end the work. Compared with the prior art, in the present application, when the filter element temperature is lower than the safety preset temperature threshold, that is, when the ultrasonic wave is working normally, if the temperature change difference is greater than or equal to the preset temperature change threshold, it indicates that the heat generated during the ultrasonic cleaning of the filter element makes the temperature difference of the filter element reach the preset temperature difference, indicating that the ultrasonic filter element cleaning effect is significant, that is, the ultrasonic cleaning of the filter element has achieved the expected cleaning effect; if the temperature difference is lower than the preset temperature difference, it indicates that the heat generated during the ultrasonic cleaning of the filter element makes the temperature difference of the filter element fail to reach the preset temperature difference, that is, the ultrasonic cleaning of the filter element has failed to achieve the expected cleaning effect, thereby judging whether the ultrasonic cleaning of the filter element has achieved the expected cleaning effect based on the relationship between the temperature difference of the filter element and the preset temperature difference, thereby accurately judging whether the ultrasonic cleaning equipment has achieved the expected cleaning effect when cleaning the filter element. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings constituting part of the present application are used to provide a further understanding of the present application. The exemplary embodiments and descriptions of the present application are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0019] Figure 1 A schematic diagram of a process of a water purifier system provided according to an embodiment of the present application is shown;

[0020] Figure 2 A structural block diagram of a water purifier system provided according to an embodiment of the present application is shown;

[0021] Figure 3 A flow chart showing functions implemented by a controller in a water purifier system provided according to an embodiment of the present application is shown.

[0022] The above drawings include the following reference numerals:

[0023] 1. Water purifier system; 2. Water purifier; 3. Temperature detection equipment; 4. Filter element; 5. Controller; 6. Ultrasonic cleaning equipment. DETAILED DESCRIPTION

[0024] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0025] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0026] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0027] As introduced in the background technology, the prior art cannot accurately determine whether the ultrasonic cleaning filter element has achieved the expected cleaning effect. To solve the above problem, an embodiment of the present application provides a water purifier system.

[0028] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0029] Figure 1 is a flow chart of a water purifier system according to an embodiment of the present application. Figure 1 As shown, the system is used to perform the following steps:

[0030] Step S201, control the ultrasonic cleaning equipment to work, obtain the current temperature and initial temperature of the filter element through the temperature detection equipment, and determine whether the current temperature is less than the safety temperature threshold.

[0031] Specifically, the temperature of the filter element is detected by a temperature detection device. If the current temperature of the filter element is less than a safety temperature threshold, it indicates that the working state of the ultrasonic cleaning device is normal.

[0032] Specifically, during ultrasonic cleaning, part of the sound energy will be converted into heat energy, causing the temperature of the cleaning medium (usually water) and the filter element to rise. Therefore, it is necessary to set a safe temperature threshold Q, which is obtained based on experimental tests during the research and development process. The safe temperature threshold Q is a value that can meet the water inlet requirements without causing thermal damage to the filter element. This value has been set before the whole machine leaves the factory.

[0033] Specifically, the normal water temperature of the water purifier is 5-38°C, so the predetermined range of the safety temperature threshold is between 38°C and 50°C.

[0034] Step S202, at least when the current temperature is less than the safety temperature threshold, calculate the difference between the current temperature and the initial temperature to obtain a temperature difference.

[0035] Specifically, at least when the ultrasonic cleaning device operates normally, the temperature difference of the filter element is calculated.

[0036] Specifically, during the ultrasonic cleaning process, part of the ultrasonic energy is converted into heat energy, causing the temperature of the cleaning medium (usually water) and the filter element to rise. The setting of the safe temperature threshold is to avoid damage to the filter element due to overheating while ensuring the cleaning effect. Therefore, real-time monitoring of the filter element temperature and comparing it with the safe temperature threshold is a prerequisite for ensuring the safety of the cleaning process.

[0037] Step S203, determining whether the temperature difference is greater than or equal to a preset temperature difference. If the temperature difference of the filter element is greater than or equal to the preset temperature difference, determining that the filter element is clean and controlling the ultrasonic cleaning device to end the operation.

[0038] Specifically, when the temperature difference of the filter element is greater than or equal to the preset temperature difference, it indicates that the ultrasonic cleaning equipment has achieved the expected cleaning effect on the filter element, and the ultrasonic cleaning equipment is controlled to end its work.

[0039] Specifically, the water temperature of the filter element fluctuates slightly during operation of the ultrasonic cleaning equipment, and the preset temperature difference range is within 0.5°C-10°C.

[0040] Specifically, when the temperature difference reaches the preset temperature difference (system parameters set by theory and the ultrasonic cleaning degree of the filter element, which have been set when the whole machine leaves the factory), it means that the expected cleaning effect has been achieved.

[0041] Specifically, Figure 2 As shown, this figure is a structural block diagram of the water purifier system.

[0042] In the above embodiment, the water purifier system 1 includes a water purifier 2, a temperature detection device 3, an ultrasonic cleaning device 6 and a controller 5. The water purifier 1 includes a filter element 4. The temperature detection device 3 is used to detect the temperature of the filter element 4. The ultrasonic cleaning device 6 is used to clean the filter element 4. First, the ultrasonic cleaning device 6 is controlled to work, and the current temperature and initial temperature of the filter element 4 are obtained through the temperature detection device 3, and it is determined whether the current temperature is less than the safety temperature threshold; secondly, at least when the current temperature is less than the safety temperature threshold, the difference between the current temperature and the initial temperature is calculated to obtain the temperature difference; finally, it is determined whether the temperature difference is greater than or equal to the preset temperature difference. When the temperature difference of the filter element 4 is greater than or equal to the preset temperature difference, it is determined that the filter element 4 is clean and the ultrasonic cleaning device 6 is controlled to end the work. Compared with the prior art, in the present application, when the temperature of the filter element 4 is lower than the safety preset temperature threshold, that is, when the ultrasonic wave is working normally, if the temperature change difference is greater than or equal to the preset temperature change threshold, it indicates that the heat generated during the ultrasonic cleaning of the filter element 4 makes the temperature difference of the filter element 4 reach the preset temperature difference, indicating that the cleaning effect of the ultrasonic filter element 4 is significant, that is, the ultrasonic cleaning of the filter element 4 has achieved the expected cleaning effect; if the temperature difference is lower than the preset temperature difference, it indicates that the heat generated during the ultrasonic cleaning of the filter element 4 makes the temperature difference of the filter element 4 fail to reach the preset temperature difference, that is, the ultrasonic cleaning of the filter element 4 has failed to achieve the expected cleaning effect, thereby judging whether the ultrasonic cleaning of the filter element 4 has achieved the expected cleaning effect based on the relationship between the temperature difference of the filter element 4 and the preset temperature difference, thereby accurately judging whether the ultrasonic cleaning equipment has achieved the expected cleaning effect when cleaning the filter element 4.

[0043] In one embodiment of the present application, at least when the current temperature is less than the safety temperature threshold, the difference between the current temperature and the initial temperature is calculated to obtain the temperature difference, including: when the current temperature is less than the safety temperature threshold, determining whether the working time of the ultrasonic cleaning device is less than the preset time; when the working time is less than the preset time, calculating the difference between the current temperature and the initial temperature to obtain the temperature difference. In this system, the system first calculates the difference between the current temperature and the initial temperature, that is, the temperature difference. Then the system determines whether the working time of the ultrasonic cleaning device is less than the preset time. If so, the system calculates the difference between the current temperature and the initial temperature again. This processing flow can further ensure that the ultrasonic cleaning device works normally within the safe temperature range to avoid damage to the device or accidents caused by excessive temperature. At the same time, it can also be further ensured that the device works at an appropriate time according to the size of the working time, and further ensure that the ultrasonic cleaning device can work normally.

[0044] Specifically, the water purifier does not produce pure water during the cleaning of the filter element, so if the cleaning time is too long, it will affect the user's use, and if it is too short, the cleaning effect cannot be achieved, so the preset time range is usually within a few minutes to 1 hour.

[0045] Specifically, when designing a product, the above values ​​will be different for different water purifier flow rates, different filter cartridge structures, and different water system systems. During the development phase, tests will be conducted to ensure the cleaning effect of the filter cartridge, record the highest temperature value, temperature change value, and cleaning time from the start of cleaning to the end of cleaning (water quality indicators reach the cleaning effect), and then set the safety temperature threshold preset, temperature difference, and preset duration.

[0046] In order to further ensure that the ultrasonic cleaning equipment will not be damaged or cause safety risks due to overheating during operation, thereby further ensuring the safety and stability of the system, in an embodiment of the present application, the above-mentioned controller is also used to: when the above-mentioned current temperature is greater than or equal to the above-mentioned safety temperature threshold, determine that the above-mentioned ultrasonic cleaning equipment is operating abnormally, and control the above-mentioned ultrasonic cleaning equipment to end the operation, and at the same time control the above-mentioned water purifier to issue a reminder.

[0047] Specifically, if the temperature value A gradually rises, it means that the ultrasonic device is working normally, but once the temperature value exceeds the safety temperature threshold, the ultrasonic cleaning equipment is judged to be abnormal, the ultrasonic cleaning equipment is shut down and the user or after-sales service is reminded to check the abnormality.

[0048] Specifically, the controller plays a core role in the ultrasonic cleaning process. It not only controls the opening and closing of the ultrasonic wave, but also receives feedback data from the temperature sensor in real time to monitor the temperature changes of the filter element. Once it detects that the current temperature A of the filter element is greater than or equal to the safety temperature threshold Q, the controller will immediately make a judgment that the ultrasonic cleaning equipment is working abnormally. Possible reasons include: No water inside the filter element: Ultrasonic energy has low conversion efficiency in anhydrous media, but it still generates heat, causing the filter element temperature to rise abnormally; Overheating of the ultrasonic device: It may be due to internal faults of the ultrasonic device, such as overload, poor heat dissipation, etc., resulting in the inability to dissipate heat in time; Temperature sensor or line failure: If there is a problem with the temperature sensor or its connection line, it may cause abnormal readings and cause the system to misjudge the filter element temperature.

[0049] In another embodiment, controlling the water purifier to issue the reminder includes at least one of the following: controlling the indicator light of the water purifier to flash; controlling the buzzer alarm of the water purifier; controlling the APP connected to the water purifier to issue a pop-up reminder. In this system, when the water purifier needs maintenance, reminders will be issued through different channels to let the user know and deal with it in time. The flashing indicator light can intuitively attract the user's attention and remind the user that the water purifier needs attention; the buzzer alarm reminds the user by sound; and the connected APP pop-up reminder reminds the user through the mobile phone, so that the user can know the status of the water purifier in time. These reminder methods can more effectively help users keep the water purifier in normal operation.

[0050] Specifically, control the flashing of the indicator light of the water purifier: The water purifier is usually equipped with a status indicator light to display the operating status of the device. When an abnormality is detected, the controller will change the flashing mode of the indicator light, for example, from steady green (indicating normal operation) to fast flashing red (indicating an emergency warning), thereby attracting the user's attention and reminding the user to check the status of the device.

[0051] Specifically, control the buzzer alarm of the water purifier: In addition to visual reminders, the water purifier may also have a built-in buzzer or alarm. When the controller detects an abnormal situation, it will trigger the buzzer to emit a continuous or intermittent alarm sound, reminding the user by sound that the water purifier may have safety hazards or need maintenance.

[0052] Specifically, the APP connected to the water purifier is controlled to pop up a reminder: Modern water purifiers often support connection with smartphone applications (APP) so that users can remotely monitor and manage the device. When an abnormality is detected, the controller will send an alarm message to the connected APP. After the APP receives the message, a warning window will pop up on the user's mobile phone screen to inform the user of the abnormal status of the device and possible measures that may need to be taken. This method can not only remind users immediately, but also facilitate remote monitoring and management when users are away from the device.

[0053] In order to further prevent the ultrasonic cleaning equipment from working continuously for a long time, thereby further preventing the ultrasonic cleaning equipment from being damaged, in an embodiment of the present application, the controller is also used to: control the ultrasonic cleaning equipment to end the work when the working time is not less than the preset time.

[0054] Specifically, the preset duration of the ultrasonic cleaning equipment is the longest cleaning time set for the entire machine. Filter element cleaning usually cannot purify water. Exceeding the maximum cleaning time will affect user use. Moreover, ultrasonic cleaning cannot rely entirely on temperature sensors. If the sensor fails or the signal is interfered with, it will affect the judgment of the controller and chip. If the ultrasonic device works for a long time, it will cause waste of electricity or cause unknown failures of the entire machine. Therefore, it is necessary to ensure that the ultrasonic device is turned off through the maximum working time.

[0055] Specifically, the controller can determine whether the working status of the ultrasonic cleaning equipment is normal and whether the expected cleaning effect has been achieved by monitoring the working time of the equipment. If the working time exceeds the preset cleaning time T, this may mean the following situations: The ultrasonic equipment may have reached its maximum cleaning effect, and continued operation will not significantly improve the cleaning effect, but may cause energy waste. The equipment may not achieve the expected cleaning effect within the preset time, which may be due to insufficient ultrasonic intensity, serious filter element blockage or equipment failure. The filter element may have reached the limit of its thermal stability. Continuing cleaning may cause the filter element material or the entire machine to overheat, posing a safety hazard.

[0056] In another embodiment, controlling the operation of the ultrasonic cleaning device includes: controlling the operation of the ultrasonic cleaning device at least when the second operation time of the water purifier reaches a second preset time. In this device, when using the ultrasonic cleaning device, it is necessary to start cleaning after the water purifier has been operating for a certain period of time, thereby further ensuring that the ultrasonic cleaning device operates when the purified water is fully prepared, thereby further improving the cleaning effect and protecting the stability of the device.

[0057] Specifically, the ultrasonic cleaning equipment is started under the following conditions: Condition 1 is that the filter element starts automatically after working for a period of time (which can be achieved by recording the working time of the whole machine or counting the volume of purified filtered water); Condition 2 is that the whole machine starts automatically when it is turned on; Condition 3 is that the user controls the start.

[0058] In order to make the ultrasonic cleaning effect of the filter element more effective, in one embodiment of the present application, the ultrasonic cleaning device is installed inside or outside the filter element.

[0059] Specifically, an ultrasonic cleaning device is added at the filter element position, and the installation position can be inside or outside the filter element.

[0060] In another embodiment, the ultrasonic cleaning device is installed on the outer surface of the filter element. In this system, the ultrasonic cleaning device is installed on the outer surface of the filter element, which can further ensure that the effect of ultrasonic cleaning of the filter element is more effective.

[0061] Specifically, if it is outside the filter element, there is no mandatory requirement for the position, but in order to ensure the ultrasonic effect, it should be as close to the filter element as possible.

[0062] Specifically, usually, ultrasonic cleaning equipment is directly immersed in water, and ultrasonic waves are transmitted through water as a medium to clean objects or containers in the water. However, installing the ultrasonic cleaning equipment on the outer surface of the filter element means that the ultrasonic energy acts directly on the filter element without the need to propagate through the water medium. This design has the following advantages: 1. Direct action and improved efficiency: Ultrasonic waves act directly on the surface of the filter element, which can more effectively remove dirt and impurities attached to the filter element and improve cleaning efficiency. Since ultrasonic energy is directly transmitted, the energy consumption when propagating in the water medium is reduced, so that more energy is used for cleaning the surface of the filter element. 2. Save resources and reduce water consumption: In the traditional ultrasonic cleaning process, a large amount of water is required as a propagation medium and a cleaning medium. Installing the ultrasonic cleaning equipment on the outer surface of the filter element reduces the dependence on water, thereby saving water resources and reducing the operating cost of the water purification system. 3. Compact structure and space saving: The external installation method of the ultrasonic cleaning equipment makes the design of the water purifier more compact. No additional space is required to accommodate the clean water tank, and the size of the whole machine can be smaller, which is more suitable for use in environments with limited home or office space. 4. Easy maintenance and improved reliability: Externally mounted ultrasonic cleaning equipment is easier to maintain and replace. If the equipment fails, there is no need to dismantle the entire water purification system, only the ultrasonic cleaning equipment needs to be replaced or repaired, which reduces the maintenance cost and complexity of the system and improves the reliability of the equipment.

[0063] In order to monitor the temperature of the water flow more in real time, thereby further helping the controller to better control the temperature of the water flow, and further ensuring the working stability of the ultrasonic cleaning equipment, in one embodiment of the present application, the above-mentioned temperature detection device is installed on the water flow path of the above-mentioned filter element and is communicatively connected with the above-mentioned controller, and the above-mentioned water flow path is the flow path of the water flow in the above-mentioned water purifier.

[0064] Specifically, a detection device is added to the components of the filter element, and the location of the temperature detection device is selected based on the place where the temperature changes most sensitively, usually a structure close to the ultrasonic device or on the water flow path.

[0065] Specifically, the temperature detection device usually includes a temperature sensor, which is designed to monitor the temperature change of the water purifier filter during the ultrasonic cleaning process. In order to accurately monitor the temperature of water flowing through the filter element, the temperature detection device is installed in the water flow path of the filter element, that is, in the flow path of the water flow in the water purifier. This choice of installation position enables the temperature sensor to directly monitor the changes in water temperature and filter element surface temperature when ultrasonic waves act on the filter element, providing direct and accurate data for judging the ultrasonic cleaning effect and the working status of the equipment.

[0066] Specifically, the temperature detection device and the controller transmit data via a communication connection, which can be wired, such as through a serial communication bus (such as UART or I2C); or wireless, such as through Bluetooth, Wi-Fi or a proprietary wireless communication protocol. Regardless of the method used, the stability of the communication connection and the accuracy of the data transmission are key to ensuring the safe cleaning process.

[0067] In order to more accurately obtain the current temperature of the filter element, thereby further improving the accuracy and stability of temperature monitoring of the filter element, in one embodiment of the present application, there are multiple temperature detection devices, which are spaced apart on the water flow path of the filter element, and the current temperature of the filter element is obtained by the temperature detection device, including: obtaining the temperatures detected by multiple temperature detection devices to obtain the temperatures of multiple positions of the filter element; according to (a1x1+a2x2+…+anxn) / n, obtaining the current temperature of the filter element, wherein n is the number of the temperature detection devices, and x1 is the number of predetermined temperature detection devices. The above-mentioned temperature obtained, a1 is the weight corresponding to the above-mentioned temperature obtained by the above-mentioned predetermined temperature detection device, x2 to xn are the above-mentioned temperatures obtained by the above-mentioned temperature detection devices other than the above-mentioned predetermined temperature detection device, a2 to an are the weights corresponding to the above-mentioned temperatures obtained by the above-mentioned temperature detection devices other than the above-mentioned predetermined temperature detection device, x2 to xn correspond to a2 to an one-to-one, that is, x2 corresponds to a2, x3 corresponds to a3, ... xn corresponds to an, a1 is greater than any weight value from a2 to an, and the above-mentioned predetermined temperature detection device is the above-mentioned temperature detection device with the smallest distance from the above-mentioned filter element.

[0068] Specifically, the temperature of the filter element is obtained by weighted averaging the temperature values ​​obtained by multiple temperature detection devices distributed at intervals on the water flow path, among which the device closest to the filter element has the largest weight.

[0069] In order to enable those skilled in the art to more clearly understand the technical solution of the present application, the implementation process of the water purifier system of the present application will be described in detail below in combination with specific embodiments.

[0070] The present embodiment relates to a specific water purifier system, including a water purifier, a temperature detection device, an ultrasonic cleaning device and a controller. The water purifier includes a filter element. The temperature detection device is used to detect the temperature of the filter element. The ultrasonic cleaning device is used to clean the filter element. The controller is used to implement the following steps:

[0071] Step 1: When the water purifier has been working for at least a preset time, the ultrasonic cleaning device is controlled to start working, that is, the filter element is started to be cleaned;

[0072] Step 2: Obtain the current temperature and initial temperature of the filter element through the temperature detection device, and determine whether the current temperature is less than the safety threshold;

[0073] Step 3: When the current temperature is not less than the safety temperature threshold, determine that the ultrasonic cleaning device is working abnormally, control the ultrasonic cleaning device to end the work, and control the water purifier to issue a reminder, wherein the reminder method includes at least one of the following: the indicator light of the water purifier flashes, the buzzer alarm of the water purifier, and the pop-up window reminder of the APP connected to the water purifier;

[0074] Step 4: When the current temperature is less than the safety temperature threshold, determine whether the working time of the ultrasonic cleaning equipment is less than the preset time;

[0075] Step 5: When the working time is not less than the preset time, the ultrasonic cleaning device is controlled to end the work;

[0076] Step 6: When the working time is less than the preset time, the difference between the current temperature and the initial temperature is calculated to obtain the temperature difference;

[0077] Step 7: When the temperature difference is not less than the preset temperature difference, make sure that the filter element is clean and control the ultrasonic cleaning equipment to end the work. When the temperature difference is less than the preset temperature difference, repeat the above steps.

[0078] The specific implementation process is as follows Figure 3 As shown, this figure is a flow chart of the functions implemented by the controller.

[0079] From the above description, it can be seen that the above embodiments of the present application achieve the following technical effects:

[0080] In the above-mentioned embodiment, the water purifier system includes a water purifier, a temperature detection device, an ultrasonic cleaning device and a controller. The water purifier includes a filter element. The temperature detection device is used to detect the temperature of the filter element. The ultrasonic cleaning device is used to clean the filter element. First, the ultrasonic cleaning device is controlled to work, and the current temperature and initial temperature of the filter element are obtained through the temperature detection device, and it is determined whether the current temperature is less than the safety temperature threshold; secondly, at least when the current temperature is less than the safety temperature threshold, the difference between the current temperature and the initial temperature is calculated to obtain the temperature difference; finally, it is determined whether the temperature difference is greater than or equal to the preset temperature difference. When the temperature difference of the filter element is greater than or equal to the preset temperature difference, it is determined that the filter element is clean and the ultrasonic cleaning device is controlled to end the work. Compared with the prior art, in the present application, when the filter element temperature is lower than the safety preset temperature threshold, that is, when the ultrasonic wave is working normally, if the temperature change difference is greater than or equal to the preset temperature change threshold, it indicates that the heat generated during the ultrasonic cleaning of the filter element makes the temperature difference of the filter element reach the preset temperature difference, indicating that the ultrasonic filter element cleaning effect is significant, that is, the ultrasonic cleaning of the filter element has achieved the expected cleaning effect; if the temperature difference is lower than the preset temperature difference, it indicates that the heat generated during the ultrasonic cleaning of the filter element makes the temperature difference of the filter element fail to reach the preset temperature difference, that is, the ultrasonic cleaning of the filter element has failed to achieve the expected cleaning effect, thereby judging whether the ultrasonic cleaning of the filter element has achieved the expected cleaning effect based on the relationship between the temperature difference of the filter element and the preset temperature difference, thereby accurately judging whether the ultrasonic cleaning equipment has achieved the expected cleaning effect when cleaning the filter element.

[0081] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A water purifier system, characterized in that: It includes a water purifier, a temperature detection device, an ultrasonic cleaning device and a controller. The water purifier includes a filter element. The temperature detection device is used to detect the temperature of the filter element. The ultrasonic cleaning device is used to clean the filter element. The controller is used to: Controlling the operation of the ultrasonic cleaning device, obtaining the current temperature and the initial temperature of the filter element through the temperature detection device, and determining whether the current temperature is less than a safety temperature threshold; At least when the current temperature is less than the safety temperature threshold, calculating the difference between the current temperature and the initial temperature to obtain a temperature difference; Determine whether the temperature difference is greater than or equal to a preset temperature difference. If the temperature difference of the filter element is greater than or equal to the preset temperature difference, determine that the filter element is clean and control the ultrasonic cleaning equipment to end its work.

2. The water purifier system according to claim 1, characterized in that: At least when the current temperature is less than the safety temperature threshold, calculating the difference between the current temperature and the initial temperature to obtain the temperature difference includes: When the current temperature is less than the safety temperature threshold, determining whether the working time of the ultrasonic cleaning device is less than a preset time; When the working time is less than the preset time, the difference between the current temperature and the initial temperature is calculated to obtain the temperature difference.

3. The water purifier system according to claim 1, characterized in that: The controller is also used for: When the current temperature is greater than or equal to the safety temperature threshold, it is determined that the ultrasonic cleaning device is operating abnormally, and the ultrasonic cleaning device is controlled to end the operation, and the water purifier is controlled to issue a reminder.

4. The water purifier system according to claim 3, characterized in that: Controlling the water purifier to issue the reminder includes at least one of the following: Controlling the indicator light of the water purifier to flash; Controlling the buzzer alarm of the water purifier; Control the APP connected to the water purifier to pop up a reminder.

5. The water purifier system according to claim 2, characterized in that: The controller is also used for: When the working time is not less than the preset time, the ultrasonic cleaning device is controlled to end the work.

6. The water purifier system according to claim 1, characterized in that: Controlling the operation of the ultrasonic cleaning equipment includes: At least when the second working time of the water purifier reaches the second preset time, the ultrasonic cleaning device is controlled to operate.

7. The water purifier system according to claim 1, characterized in that: The ultrasonic cleaning device is installed inside or outside the filter element.

8. The water purifier system according to claim 7, characterized in that: The ultrasonic cleaning device is installed on the outer surface of the filter element.

9. The water purifier system according to claim 1, characterized in that: The temperature detection device is installed on the water flow path of the filter element and is communicatively connected with the controller. The water flow path is the flow path of the water flow in the water purifier.

10. The water purifier system according to claim 1, characterized in that: There are multiple temperature detection devices, which are distributed at intervals on the water flow path of the filter element. The current temperature of the filter element is obtained by the temperature detection device, including: Acquire the temperatures detected by the plurality of temperature detection devices to obtain the temperatures at a plurality of positions of the filter element; According to (a1x1+a2x2+…+anxn) / n, the current temperature of the filter element is obtained, wherein n is the number of the temperature detection devices, x1 is the temperature obtained by the predetermined temperature detection device, a1 is the weight corresponding to the temperature obtained by the predetermined temperature detection device, x2 to xn are the temperatures obtained by the temperature detection devices other than the predetermined temperature detection device, a2 to an are the weights corresponding to the temperatures obtained by the temperature detection devices other than the predetermined temperature detection device, x2 to xn correspond one-to-one to a2 to an, a1 is greater than any weight value from a2 to an, and the predetermined temperature detection device is the temperature detection device with the shortest distance from the filter element.

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