A net drinking machine and a control method, device and medium thereof

Abstract

The application discloses a kind of pure drinking machine and its control method, device and medium, wherein, method includes the following steps: obtaining user set water temperature and water volume;Control thick film heating body heating, control pump start operation;Current water temperature is obtained, when the water temperature reaches the water temperature, thick film heating body temperature is obtained;Difference between the water temperature and the thick film heating body temperature is calculated;According to first preset corresponding relationship, obtain the stop heat volume corresponding to difference;Residual water volume is obtained;When residual water volume is less than or equal to stop heat volume, stop thick film heating body heating, until residual water volume is zero, control pump stops operation.To avoid user short time secondary water, the water temperature of starting time period exceeds the demand temperature, especially when the temperature set by user last time is boiling point temperature, the temperature of secondary water can be avoided to exceed boiling point, and danger is caused to user.

Description

Technical Field

[0001] This invention relates to the field of water purifier technology, and in particular to a water purifier and its control method, device and medium. Background Technology

[0002] If a water purifier stops dispensing water and then immediately dispenses water again within a short period, the residual heat from the heating element will cause the temperature inside the heating element to rise again immediately after heating stops. This results in the water temperature exceeding the desired temperature for the initial period, leading to a poor user experience. In particular, if the user sets the temperature to the boiling point, the temperature of the water dispensed again within 1-2 seconds will exceed the boiling point, which can easily cause splashing and pose a danger to the user.

[0003] Currently, the common approach is to lower the maximum temperature so that the residual heat cannot reach the required temperature. Alternatively, during secondary water intake, the thick-film heating element is not heated initially; the water pump is run for a period before the thick-film heating is activated. This results in the secondary water output taking an excessively long time to reach the set temperature. Summary of the Invention

[0004] This invention provides a water purifier and its control method, device and medium to prevent the water temperature from exceeding the required temperature during the initial period when the user takes water for a second time in a short period of time. In particular, when the user's previous temperature setting is the boiling point, it can prevent the temperature of the water taken for the second time from exceeding the boiling point, causing splashing and posing a danger to the user.

[0005] To achieve the above objectives, a first aspect of the present invention provides a control method for a water purifier, comprising the following steps:

[0006] Obtain the user-set water intake temperature and outlet volume;

[0007] Control the heating of the thick film heating element and control the start-up and operation of the pump;

[0008] Obtain the current outlet water temperature, and when the outlet water temperature reaches the water intake temperature, obtain the temperature of the thick film heating element;

[0009] Calculate the difference between the outlet water temperature and the thick film heating element temperature;

[0010] The heating-off volume corresponding to the difference is obtained according to the first preset correspondence;

[0011] Obtain the remaining outflow volume;

[0012] When the remaining outlet water volume is less than or equal to the off-heat volume, the thick film heater stops heating until the remaining outlet water volume is zero, at which point the pump stops operating.

[0013] According to an embodiment of the present invention, before obtaining the heating-stopping volume corresponding to the difference based on a first preset correspondence, the method further includes:

[0014] Obtain the first preset correspondence, wherein the first preset correspondence is the correspondence between the difference and the unheated volume, and the first preset correspondence is obtained by data fitting.

[0015] According to an embodiment of the present invention, obtaining the first preset correspondence includes:

[0016] Obtain multiple pre-defined correspondences under different ambient temperatures;

[0017] The weighted average of the coefficients of multiple first preset correspondences is taken as the final coefficient of the first preset correspondence.

[0018] According to one embodiment of the present invention, before controlling the heating of the thick film heating element, the method further includes:

[0019] The preheating volume of the thick film heating element corresponding to the water intake temperature is obtained according to the second preset correspondence.

[0020] The preheating time of the thick film heating element is calculated based on the preheating volume.

[0021] The thick film heating element is controlled to heat, and when the heating time of the thick film heating element reaches the preheating time, the pump is controlled to start operation.

[0022] According to one embodiment of the present invention, before obtaining the preheating time of the thick film heating element according to the second preset correspondence, the method further includes:

[0023] Obtain the second preset correspondence, which is the correspondence between the water intake temperature and the preheating volume. The second preset correspondence is obtained by data fitting.

[0024] According to an embodiment of the present invention, obtaining the second preset correspondence includes:

[0025] Obtain multiple second preset correspondences under different ambient temperatures;

[0026] The weighted average of the coefficients of multiple second preset correspondences is used as the final coefficient of the second preset correspondence.

[0027] To achieve the above objectives, a second aspect of the present invention provides a control device for a water purifier, comprising:

[0028] The first acquisition module is used to acquire the water temperature and water volume set by the user.

[0029] The control module is used to control the heating of the thick film heating element and to control the start-up and operation of the pump;

[0030] The second acquisition module is used to acquire the current outlet water temperature, and when the outlet water temperature reaches the water intake temperature, it is also used to acquire the temperature of the thick film heating element.

[0031] The calculation module is used to calculate the difference between the outlet water temperature and the thick film heating element temperature;

[0032] The heat-stopping volume acquisition module is used to acquire the heat-stopping volume corresponding to the difference according to a first preset correspondence relationship;

[0033] The remaining water discharge volume acquisition module is used to acquire the remaining water discharge volume;

[0034] The control module is also used to stop the thick film heating element from heating when the remaining outlet water volume is less than or equal to the off-heat volume, until the remaining outlet water volume is zero, and then control the pump to stop operating.

[0035] According to one embodiment of the present invention, the control device of the water purifier further includes:

[0036] The first preset correspondence acquisition module is used to acquire the first preset correspondence, wherein the first preset correspondence is the correspondence between the difference and the unheated volume, and the first preset correspondence is acquired by data fitting.

[0037] According to an embodiment of the present invention, the first preset correspondence acquisition module includes:

[0038] The first acquisition unit is used to acquire multiple first preset correspondences under different ambient temperatures;

[0039] The second calculation unit is used to take the weighted average of the coefficients of multiple first preset correspondences as the final coefficient of the first preset correspondence.

[0040] According to one embodiment of the present invention, the control device of the water purifier further includes:

[0041] The preheating volume acquisition module is used to acquire the preheating volume of the thick film heating element corresponding to the water intake temperature according to a second preset correspondence.

[0042] A preheating time acquisition module is used to calculate the preheating time of the thick film heating element based on the preheating volume.

[0043] The control module is used to control the heating of the thick film heating element, and to control the pump to start operation when the heating time of the thick film heating element reaches the preheating time.

[0044] According to one embodiment of the present invention, the control device of the water purifier further includes:

[0045] The second preset correspondence acquisition module is used to acquire the second preset correspondence, which is the correspondence between the water intake temperature and the preheating volume. The second preset correspondence is acquired by data fitting.

[0046] According to one embodiment of the present invention, the second preset correspondence acquisition module includes:

[0047] The second acquisition unit is used to acquire multiple second preset correspondences under different ambient temperatures;

[0048] The second calculation unit is used to take the weighted average of the coefficients of multiple second preset correspondences as the final coefficient of the second preset correspondence.

[0049] To achieve the above objectives, a third aspect of the present invention also provides a water purifier, the water purifier comprising:

[0050] At least one processor; and

[0051] A memory communicatively connected to the at least one processor; wherein,

[0052] The memory stores a computer program that can be executed by the at least one processor, which enables the at least one processor to perform the control method for the water purifier as described in any embodiment.

[0053] To achieve the above objectives, a fourth aspect of the present invention also provides a computer-readable storage medium storing computer instructions that, when executed by a processor, implement the control method for the water purifier described in any embodiment.

[0054] According to embodiments of the present invention, a water purifier and its control method, apparatus, and medium are provided. The method includes the following steps: acquiring the user-set water intake temperature and outlet volume; controlling the thick-film heating element to heat and controlling the pump to start operation; acquiring the current outlet temperature; when the outlet temperature reaches the water intake temperature, acquiring the thick-film heating element temperature; calculating the difference between the outlet temperature and the thick-film heating element temperature; acquiring the stop-heating volume corresponding to the difference according to a first preset correspondence; acquiring the remaining outlet volume; when the remaining outlet volume is less than or equal to the stop-heating volume, stopping the thick-film heating element until the remaining outlet volume is zero, and controlling the pump to stop operation. This is to prevent the water temperature from exceeding the required temperature during the initial period when the user takes water twice in a short time, especially when the user's previous temperature setting was the boiling point, thus preventing the secondary water temperature from exceeding the boiling point and splashing, which could pose a danger to the user.

[0055] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of the present invention, nor is it intended to limit the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description

[0056] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0057] Figure 1 This is a flowchart of the control method for a water purifier proposed in an embodiment of the present invention;

[0058] Figure 2 This is a block diagram of the control device for the water purifier proposed in an embodiment of the present invention;

[0059] Figure 3 This is a schematic diagram of the water purifier proposed in an embodiment of the present invention. Detailed Implementation

[0060] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0061] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0062] This invention provides a water purifier and its control method, device and medium to prevent the water temperature from exceeding the required temperature during the initial period when the user takes water for a second time in a short period of time. In particular, when the user's previous temperature setting is the boiling point, it can prevent the temperature of the water taken for the second time from exceeding the boiling point, causing splashing and posing a danger to the user.

[0063] Figure 1 This is a flowchart of the control method for a water purifier proposed in an embodiment of the present invention. Figure 1 As shown, the control method of this water purifier includes the following steps:

[0064] S101, obtain the user-set water intake temperature and water outlet volume;

[0065] Users can input the water temperature and output volume through the water purifier's control panel (or display panel). For example, the water temperature can be set to 50℃ and the output volume to 200ml, or the water temperature can be set to 100℃ and the output volume to 200ml. The output volume is obtained by integrating the flow rate using the PWM control signal of the pump in the water purifier; different water temperatures will result in different output volumes.

[0066] S102 controls the heating of the thick film heating element and controls the start-up and operation of the pump;

[0067] In other words, after setting the water outlet volume and water temperature, the water purifier starts controlling the thick film heating element to heat the water and simultaneously controls the pump to start running.

[0068] S103, obtain the current outlet water temperature, and when the outlet water temperature reaches the water intake temperature, obtain the temperature of the thick film heating element;

[0069] In other words, the current water temperature is obtained in real time when water is being dispensed, and the temperature of the thick film heating element is obtained when the water temperature reaches the water intake temperature. For example, when the water temperature reaches 50℃, the temperature of the thick film heating element is 70℃.

[0070] S104, calculate the difference between the outlet water temperature and the thick film heating element temperature; for example, (70-50) = 20℃.

[0071] S105, Obtain the heating stop volume corresponding to the difference according to the first preset correspondence;

[0072] The first preset correspondence is the correspondence between the temperature difference and the heating stop volume. For example, if the temperature difference is 20℃, the heating stop volume can be 10ml; if the temperature difference is 10℃, the heating stop volume can be 5ml. The heating stop volume refers to the volume remaining when the thick film heater stops heating, which is the minimum volume of the heating stop volume that is left before the user-set outlet water volume.

[0073] S106, Obtain the remaining outflow volume;

[0074] After the pump starts running, the water purifier begins to dispense water. The remaining water volume can be obtained by using the pump's own PWM flow integral count.

[0075] S107: When the remaining outlet water volume is less than or equal to the off-heating volume, the thick film heating element stops heating until the remaining outlet water volume is zero, and the control pump stops operating.

[0076] In other words, if the difference can be 20℃ (10℃), then when the remaining water volume is 10ml (5ml) or less than 10ml (5ml), the thick film heating element will stop heating until the remaining water volume is zero. In this way, the residual heat from heating the water can be carried away by the water in the remaining water volume, avoiding the initial water temperature of the water purifier being higher than 50℃ (100℃) when the user takes water a second time in a short period of time, thus reducing the user experience.

[0077] According to one embodiment of the present invention, before obtaining the heating-stopping volume corresponding to the difference based on a first preset correspondence, the method further includes:

[0078] Obtain the first preset correspondence, wherein the first preset correspondence is the correspondence between the difference and the unheated volume, and the first preset correspondence is obtained by data fitting.

[0079] It should be noted that the initial pre-defined correspondence can be obtained during the experimental phase. This can be achieved by using an approximation method to find the corresponding stop-heating volume for each temperature difference. For example, when the water temperature is 50℃ and the thick-film heater temperature is 70℃, the outlet water volume is 200ml, and the temperature difference is 20℃, a value can be initially determined (calculated based on the 20℃ temperature difference, meaning the heat corresponding to the 20℃ temperature difference can maintain a constant temperature for the stop-heating volume of water). For instance, if the calculated value is 10ml, then the thick-film heater can be manually controlled to stop heating when the remaining outlet water volume reaches 10ml. You can continuously measure the outlet water temperature. If the outlet water temperature is below 50℃, it means that the outlet water volume is set too large. In the next experiment, you can set it smaller, such as 2ml. That is, you can manually control the thick film heating element to stop heating when the remaining outlet water volume reaches 2ml. After that, you can continuously measure the outlet water temperature. If the outlet water temperature is above 50℃, it means that the outlet water volume is set too small. In the next experiment, you can set it larger. In the next experiment, you can find the heating stop volume between 2ml and 10ml. Finally, you can find a suitable heating stop volume, that is, when the remaining outlet water volume reaches the heating stop volume, the final outlet water temperature is still 50℃.

[0080] Additionally, when the water temperature is 100℃ and the temperature of the thick-film heater is 110℃, the difference is 10℃. We can first find a value (calculated based on the 10℃ difference, meaning the heat corresponding to the 10℃ difference can maintain a constant temperature for the stopped-heating volume of water), for example, 5ml. This means that when the remaining water volume reaches 5ml, the thick-film heater stops heating. We can then continuously measure the water temperature. If the water temperature is below 100℃, the water volume setting is too large; in the next experiment, it can be set smaller, for example, 2ml. Similarly, when the remaining water volume reaches 2ml, the thick-film heater stops heating. We can then continuously measure the water temperature. If the water temperature is above 100℃, the water volume setting is too small; in the next experiment, it can be set larger. In the next experiment, we can find a stopped-heating volume between 2ml and 5ml, ultimately finding a suitable stopped-heating volume where the final water temperature remains 100℃ when the remaining water volume reaches the stopped-heating volume.

[0081] Following the above method, the corresponding cooling capacity for different temperature differences can be found. The larger the difference, the more heat is generated, and the larger the cooling capacity. Conversely, the smaller the difference, the less heat is generated, and the smaller the cooling capacity. Then, using data fitting methods (machine learning and other model training methods), a first preset correspondence between different temperature differences and cooling capacity can be found. This first preset correspondence can be further refined using a large amount of actual data.

[0082] According to an embodiment of the present invention, obtaining a first preset correspondence includes:

[0083] Obtain multiple pre-defined correspondences under different ambient temperatures;

[0084] The weighted average of the coefficients of multiple first preset correspondences is used as the coefficient of the final first preset correspondence.

[0085] It should be noted that different ambient temperatures have a certain impact on the heating shut-off volume. During the experimental phase, different ambient temperatures can be simulated, such as 10℃, 15℃, 20℃, 25℃, and 30℃. The aforementioned method can be used to obtain the first preset correspondence at these ambient temperatures. Finally, the weighted average of the coefficients of multiple first preset correspondences is used as the coefficient of the final first preset correspondence, thus obtaining the first preset correspondence. After considering the influence of ambient temperature, the final obtained first preset correspondence is more accurate, and the final controlled heating shut-off volume is more precise. The interval of ambient temperature can be selected according to the difficulty of the actual experiment; the more intervals, the more complex the calculation, and the more accurate the final result. Specifically, the larger the difference between the thick-film heating element and the water temperature, the larger the heating shut-off volume; conversely, the larger the difference between the thick-film heating element and the ambient temperature, the smaller the heating shut-off volume (in reality, the influence of ambient temperature is relatively small and can be ignored when considering experimental costs).

[0086] According to one embodiment of the present invention, before controlling the heating of the thick film heating element, the method further includes:

[0087] The preheating volume of the thick film heating element corresponding to the water intake temperature is obtained according to the second preset correspondence.

[0088] Calculate the preheating time of the thick film heater based on the preheating volume;

[0089] The heating of the thick film heating element is controlled, and the pump is started when the heating time of the thick film heating element reaches the preheating time.

[0090] It should be noted that, to avoid situations where users first let some warm water flow out and then discard it, only to start filling the container when the water reaches the desired temperature later, resulting in a long waiting time and wasted water, the thick-film heating element can be controlled to heat a predetermined volume of water before the pump is started. This avoids a long waiting time for the user and prevents the initial portion of water from being wasted.

[0091] According to one embodiment of the present invention, before obtaining the preheating time of the thick film heating element according to the second preset correspondence, the method further includes:

[0092] Obtain the second preset correspondence, which is the correspondence between water intake temperature and preheating volume. The second preset correspondence is obtained by data fitting.

[0093] The second preset correspondence can be obtained during the experimental phase. When the water temperature is 50℃, a preheating volume can be set, such as 5ml. Based on 5ml, the intermediate temperature between the outlet and inlet water temperatures within the thick-film heating element (initial temperature), and the target water temperature, the heating time required for 5ml of water to rise from the initial temperature to 50℃ can be calculated using the specific heat capacity calculation formula. After this time, the outlet water temperature is tested. If the outlet water temperature is higher than 50℃, it indicates that the heating time is too long, meaning the preheating volume is too large. The preheating volume can then be set smaller, such as 2ml. Based on 2ml of water, the intermediate temperature between the inlet and outlet temperatures within the thick film heating element (initial temperature), and the target water intake temperature, the heating time required for 2ml of water to rise from the initial temperature to 50℃ can be calculated using the specific heat capacity formula. After this time, the outlet temperature is tested. If the outlet temperature is below 50℃, it indicates that the heating time is too long, meaning the preheating volume is too low. By approximating both ends, a suitable preheating volume can be found, and the appropriate preheating time can be calculated. Then, the pump is started to produce water, and the temperature of the water directly connected to the user is the desired temperature.

[0094] The preheating volume corresponding to other water intake temperatures can also be obtained by approximating both ends, thereby obtaining a correspondence table between preheating volume and water intake temperature. Based on these data, data fitting (machine learning) is used to obtain a second preset correspondence. In later use, some actual application data can be added to correct the second preset correspondence.

[0095] According to one embodiment of the present invention, obtaining the second preset correspondence includes:

[0096] Obtain multiple second preset correspondences under different ambient temperatures;

[0097] The weighted average of the coefficients of multiple second preset correspondences is used as the coefficient of the final second preset correspondence.

[0098] Similarly, different ambient temperatures have a certain impact on the preheating volume. During the experimental phase, different ambient temperatures can be simulated, such as 10℃, 15℃, 20℃, 25℃, and 30℃. The second preset correspondence at these ambient temperatures can be obtained using the aforementioned method. Finally, the weighted average of the coefficients of multiple second preset correspondences is used as the coefficient of the final second preset correspondence, thus obtaining the second preset correspondence. After considering the influence of ambient temperature, the final obtained second preset correspondence is more accurate, and the final controlled preheating volume is more precise. The interval of the ambient temperature can be selected according to the difficulty of the actual experiment; the more intervals used, the more complex the calculation, and the more accurate the final result.

[0099] Therefore, when starting to collect water, excessive waiting time can be avoided, and when collecting water continuously, splashing of liquid can be prevented. Note that all data in this embodiment does not represent actual data and is only for illustrative purposes.

[0100] Figure 2 This is a block diagram of the control device for the water purifier proposed in an embodiment of the present invention. Figure 2 As shown, the control device includes:

[0101] The first acquisition module 101 is used to acquire the water intake temperature and water outlet volume set by the user.

[0102] Control module 102 is used to control the heating of the thick film heating element and control the start-up and operation of the pump;

[0103] The second acquisition module 103 is used to acquire the current outlet water temperature, and when the outlet water temperature reaches the water intake temperature, it is also used to acquire the temperature of the thick film heating element.

[0104] Calculation module 104 is used to calculate the difference between the outlet water temperature and the thick film heating element temperature;

[0105] The heat-stopping volume acquisition module 105 is used to acquire the heat-stopping volume corresponding to the difference according to a first preset correspondence relationship;

[0106] The remaining water volume acquisition module 106 is used to acquire the remaining water volume;

[0107] The control module 102 is also used to stop the thick film heating element from heating when the remaining outlet water volume is less than or equal to the off-heating volume, until the remaining outlet water volume is zero, and then control the pump to stop operating.

[0108] According to one embodiment of the present invention, the control device of the water purifier further includes:

[0109] The first preset correspondence acquisition module is used to acquire the first preset correspondence, wherein the first preset correspondence is the correspondence between the difference and the unheated volume, and the first preset correspondence is acquired by data fitting method.

[0110] According to an embodiment of the present invention, the first preset correspondence acquisition module includes:

[0111] The first acquisition unit is used to acquire multiple first preset correspondences under different ambient temperatures;

[0112] The second calculation unit is used to take the weighted average of the coefficients of multiple first preset correspondences as the coefficients of the final first preset correspondence.

[0113] According to one embodiment of the present invention, the control device of the water purifier further includes:

[0114] The preheating volume acquisition module is used to acquire the preheating volume of the thick film heating element corresponding to the water intake temperature according to the second preset correspondence.

[0115] The preheating time acquisition module is used to calculate the preheating time of the thick film heating element based on the preheating volume;

[0116] The control module is used to control the heating of the thick film heating element, and to control the pump to start running when the heating time of the thick film heating element reaches the preheating time.

[0117] According to one embodiment of the present invention, the control device of the water purifier further includes:

[0118] The second preset correspondence acquisition module is used to acquire the second preset correspondence, which is the correspondence between water intake temperature and preheating volume. The second preset correspondence is acquired by data fitting method.

[0119] According to one embodiment of the present invention, the second preset correspondence acquisition module includes:

[0120] The second acquisition unit is used to acquire multiple second preset correspondences under different ambient temperatures;

[0121] The second calculation unit is used to take the weighted average of the coefficients of multiple second preset correspondences as the coefficients of the final second preset correspondence.

[0122] The control device for the water purifier provided in this embodiment of the invention can execute the control method for the water purifier provided in any embodiment of the invention, and has the corresponding functional modules and beneficial effects of the method.

[0123] Figure 3 This is a schematic diagram of the water purifier proposed in an embodiment of the present invention. Figure 3 As shown, the water purifier 10 includes:

[0124] At least one processor; and

[0125] A memory that is communicatively connected to at least one processor; wherein,

[0126] The memory stores a computer program that can be executed by at least one processor, such that the at least one processor is able to perform the control method of the water purifier proposed in any embodiment.

[0127] In addition, water purifiers with heating functions also include a water tank, a water pump, a thick-film heating element (rotating from top to bottom, with the upper part generally having a higher water temperature than the lower part), a water tap, piping, and a control board. The thick-film heating element has an inlet water temperature sensor at the inlet and an outlet water temperature sensor at the outlet. When the control board detects a user's water demand signal, it activates the water pump and the thick-film heating element, pumping hot water out through the outlet. Currently, most control methods start the thick-film heating element simultaneously with the pump. However, this invention, through physical characteristic analysis and test data analysis, uses a fitted formula to preheat the water in the thick-film heating element before the pump stops, thus achieving rapid hot water output. Furthermore, the thick-film heating element stops when the outlet water volume is less than or equal to the off-heating volume, continuing until the outlet water volume is zero. This avoids liquid splashing and potential hazards during short-term water dispensing.

[0128] This invention also proposes a computer-readable storage medium storing computer instructions that, when executed by a processor, implement the control method for the water purifier proposed in any embodiment.

[0129] Figure 3 A schematic diagram of the structure of a water purifier 10, which can be used to implement an embodiment of the present invention, is shown. Figure 3 As shown, the water purifier 10 includes at least one processor 11 and a memory, such as a read-only memory (ROM) 12 or a random access memory (RAM) 13, communicatively connected to the at least one processor 11. The memory stores computer programs executable by the at least one processor. The processor 11 can perform various appropriate actions and processes based on the computer program stored in the ROM 12 or loaded from storage unit 18 into the RAM 13. The RAM 13 can also store various programs and data required for the operation of the water purifier 10. The processor 11, ROM 12, and RAM 13 are interconnected via a bus 14. An input / output (I / O) interface 15 is also connected to the bus 14.

[0130] Multiple components in the water purifier 10 are connected to the I / O interface 15, including: an input unit 16, such as a keyboard, mouse, etc.; an output unit 17, such as various types of displays, speakers, etc.; a storage unit 18, such as a disk, optical disk, etc.; and a communication unit 19, such as a network card, modem, wireless transceiver, etc. The communication unit 19 allows the water purifier 10 to exchange information / data with other devices through computer networks such as the Internet and / or various telecommunications networks.

[0131] Processor 11 can be a variety of general-purpose and / or special-purpose processing components with processing and computing capabilities. Some examples of processor 11 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various special-purpose artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any suitable processor, controller, microcontroller, etc. Processor 11 performs the various methods and processes described above, such as, for example, the control methods of a water purifier.

[0132] In some embodiments, the control method for the water purifier may be implemented as a computer program tangibly contained in a computer-readable storage medium, such as storage unit 18. In some embodiments, part or all of the computer program may be loaded and / or installed on the water purifier 10 via ROM 12 and / or communication unit 19. When the computer program is loaded into RAM 13 and executed by processor 11, one or more steps of the control method for the water purifier described above may be performed. Alternatively, in other embodiments, processor 11 may be configured to perform the control method for the water purifier by any other suitable means (e.g., by means of firmware).

[0133] Various embodiments of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, field-programmable gate arrays (FPGAs), application-specific integrated circuits (ASICs), application-specific standard products (ASSPs), systems-on-a-chip (SoCs), payload-programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various embodiments may include implementations in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which may be a dedicated or general-purpose programmable processor, capable of receiving data and instructions from a storage system, at least one input device, and at least one output device, and transmitting data and instructions to the storage system, the at least one input device, and the at least one output device.

[0134] Computer programs used to implement the methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, such that when executed by the processor, the computer programs cause the functions / operations specified in the flowcharts and / or block diagrams to be performed. The computer programs may be executed entirely on a machine, partially on a machine, or as a standalone software package, partially on a machine and partially on a remote machine, or entirely on a remote machine or server.

[0135] In the context of this invention, a computer-readable storage medium can be a tangible medium that may contain or store a computer program for use by or in conjunction with an instruction execution system, apparatus, or device. A computer-readable storage medium may include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any suitable combination thereof. Alternatively, a computer-readable storage medium may be a machine-readable signal medium. More specific examples of machine-readable storage media include electrical connections based on one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fibers, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof.

[0136] To provide interaction with the user, the systems and techniques described herein can be implemented on the water purifier 10, which includes: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user; and a keyboard and pointing device (e.g., a mouse or trackball) through which the user provides input to the water purifier. Other types of devices can also be used to provide interaction with the user; for example, feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form (including sound input, voice input, or tactile input).

[0137] In summary, the water purifier and its control method, device, and medium proposed in the embodiments of the present invention include the following steps: acquiring the user-set water intake temperature and outlet volume; controlling the thick-film heating element to heat and controlling the pump to start operation; acquiring the current outlet temperature, and acquiring the thick-film heating element temperature when the outlet temperature reaches the water intake temperature; calculating the difference between the outlet temperature and the thick-film heating element temperature; acquiring the heating stop volume corresponding to the difference according to a first preset correspondence; acquiring the remaining outlet volume; and stopping the thick-film heating element heating when the remaining outlet volume is less than or equal to the heating stop volume, until the remaining outlet volume is zero, and controlling the pump to stop operation. This is to prevent the water temperature from exceeding the required temperature during the initial period when the user takes water twice in a short period of time, especially when the user's previous set temperature is the boiling point temperature, to prevent the temperature of the second water intake from exceeding the boiling point, causing splashing and posing a danger to the user.

[0138] It should be understood that the various forms of processes shown above can be used, with steps reordered, added, or deleted. For example, the steps described in this invention can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this invention can be achieved, and this is not limited herein.

[0139] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A control method for a water purifier, characterized in that, Includes the following steps: Obtain the user-set water intake temperature and outlet volume; Control the heating of the thick film heating element and control the start-up and operation of the pump; Obtain the current outlet water temperature, and when the outlet water temperature reaches the water intake temperature, obtain the temperature of the thick film heating element; Calculate the difference between the outlet water temperature and the thick film heating element temperature; The heating-off volume corresponding to the difference is obtained according to the first preset correspondence; Obtain the remaining outflow volume; When the remaining outlet water volume is less than or equal to the off-heat volume, the thick film heater stops heating until the remaining outlet water volume is zero, at which point the pump stops operating.

2. The control method for a water purifier according to claim 1, characterized in that, Before obtaining the heating-stopping volume corresponding to the difference based on the first preset correspondence, the process further includes: Obtain the first preset correspondence, wherein the first preset correspondence is the correspondence between the difference and the unheated volume, and the first preset correspondence is obtained by data fitting.

3. The control method for the water purifier according to claim 2, characterized in that, The step of obtaining the first preset correspondence includes: Obtain multiple pre-defined correspondences under different ambient temperatures; The weighted average of the coefficients of multiple first preset correspondences is taken as the final coefficient of the first preset correspondence.

4. The control method for a water purifier according to claim 1, characterized in that, Before controlling the heating of the thick film heating element, the following is also included: The preheating volume of the thick film heating element corresponding to the water intake temperature is obtained according to the second preset correspondence. The preheating time of the thick film heating element is calculated based on the preheating volume. The thick film heating element is controlled to heat, and when the heating time of the thick film heating element reaches the preheating time, the pump is controlled to start operation.

5. The control method for a water purifier according to claim 4, characterized in that, Before obtaining the preheating time of the thick film heating element according to the second preset correspondence, the method further includes: Obtain the second preset correspondence, which is the correspondence between the water intake temperature and the preheating volume. The second preset correspondence is obtained by data fitting.

6. The control method for a water purifier according to claim 5, characterized in that, The step of obtaining the second preset correspondence includes: Obtain multiple second preset correspondences under different ambient temperatures; The weighted average of the coefficients of multiple second preset correspondences is used as the final coefficient of the second preset correspondence.

7. A control device for a water purifier, characterized in that, include: The first acquisition module is used to acquire the water temperature and water volume set by the user. The control module is used to control the heating of the thick film heating element and to control the start-up and operation of the pump; The second acquisition module is used to acquire the current outlet water temperature, and when the outlet water temperature reaches the water intake temperature, it is also used to acquire the temperature of the thick film heating element. The calculation module is used to calculate the difference between the outlet water temperature and the thick film heating element temperature; The heat-stopping volume acquisition module is used to acquire the heat-stopping volume corresponding to the difference according to a first preset correspondence relationship; The remaining water discharge volume acquisition module is used to acquire the remaining water discharge volume; The control module is also used to stop the thick film heating element from heating when the remaining outlet water volume is less than or equal to the off-heat volume, until the remaining outlet water volume is zero, and then control the pump to stop operating.

8. The control device for the water purifier according to claim 7, characterized in that, Also includes: The preheating volume acquisition module is used to acquire the preheating volume of the thick film heating element corresponding to the water intake temperature according to a second preset correspondence. A preheating time acquisition module is used to calculate the preheating time of the thick film heating element based on the preheating volume. The control module is used to control the heating of the thick film heating element, and to control the pump to start operation when the heating time of the thick film heating element reaches the preheating time.

9. A water purifier, characterized in that, The water purifier includes: At least one processor; and A memory communicatively connected to the at least one processor; wherein, The memory stores a computer program that can be executed by the at least one processor, the computer program being executed by the at least one processor to enable the at least one processor to perform the control method of the water purifier according to any one of claims 1-6.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer instructions that, when executed by a processor, implement the control method for the water purifier according to any one of claims 1-6.

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