Water purifier outlet water control method

Abstract

This application provides a water purifier outlet water control method. The water purifier includes a first flow control device, a second flow control device, and a proportional adjustment device. The outlet water control method includes: acquiring a target outlet water temperature and a target outlet water volume; determining a first operating power of the first flow control device based on the target outlet water temperature; determining a second operating power of the second flow control device based on the target outlet water volume and the first operating power; controlling the first flow control device to operate at the first operating power and controlling the second flow control device to operate at the second operating power; when the first flow control device and the second flow control device operate simultaneously, limiting the first operating power and the second operating power to a range within which the operating power is limited, and determining the first operating power and the second operating power according to a preset relationship based on the actual maximum flow rate to achieve accurate flow rate calculation, thereby achieving accurate constant temperature and accurate quantitative water output at the maximum flow rate.

Description

Technical Field

[0001] This application relates to the field of water purifier technology, and in particular to a method for controlling the water output of a water purifier. Background Technology

[0002] In daily use of water purifiers, users typically desire a consistent flow rate and temperature for their water. Currently, water purifiers on the market are broadly divided into two types: those without a hot water tank and those with one. Water purifiers without a hot water tank, due to limitations in their heating element power, can only dispense a very small flow rate when boiling water is needed. Water purifiers with a hot water tank generally maintain the water at a specific temperature, for example, 50℃. This temperature ensures the functionality for most users. Because the water is hotter, it heats up faster than cold water after passing through the heating element, allowing for a larger flow rate than purifiers without a hot water tank. However, the hot water tank has a limited capacity, resulting in a small continuous flow of water at a constant temperature. Therefore, in some situations, both cold and hot water are needed simultaneously. In these cases, the heating element is used to heat the water to the set temperature, ensuring a consistent water flow for the longest possible time.

[0003] However, in order to save costs, some water purifiers often do not install flow meters and instead calculate the flow rate by using a water pump. However, the water pump's output flow rate has errors, especially when cold and hot water flows converge and are discharged simultaneously. Therefore, how to achieve a large flow rate of quantitative and constant temperature water output has become an urgent technical problem to be solved. Summary of the Invention

[0004] This application provides a water purifier outlet water control method to solve the technical problem of achieving large flow rate, quantitative and constant temperature water output.

[0005] According to one aspect of the embodiments of this application, a water purifier outlet control method is provided. The water purifier includes a first flow control device, a second flow control device, and a proportional adjustment device. The first flow control device is used to control the flow rate of water at a first initial temperature, the second flow control device is used to control the flow rate of water at a second initial temperature, and the proportional adjustment device is disposed at the outlets of the first flow control device and the second flow control device to converge the water outlets of the first flow control device and the second flow control device. The outlet control method includes: acquiring a target outlet water temperature and a target outlet water volume; determining a first operating power of the first flow control device based on the target outlet water temperature; determining a second operating power of the second flow control device based on the target outlet water volume and the first operating power; controlling the first flow control device to operate at the first operating power, and controlling the second flow control device to operate at the second operating power; wherein, when the first flow control device and the second flow control device operate simultaneously, the water flow rate in the proportional adjustment device satisfies a preset relationship with the first operating power and the second operating power, the preset relationship being determined based on the operating power range of the first flow control device and the second flow control device and the maximum actual flow rate.

[0006] Optionally, when the first flow control device and the second flow control device operate simultaneously, the maximum actual flow of the first flow control device is determined based on the flow of the second flow control device; and / or the maximum actual flow of the second flow control device is determined based on the flow of the first flow control device.

[0007] Optionally, the maximum actual flow rate of the first flow control device is inversely correlated with the real-time flow rate of the second flow control device; and / or the maximum actual flow rate of the second flow control device is inversely correlated with the real-time flow rate of the first flow control device.

[0008] Optionally, determining the second operating power of the second flow control device based on the target water output and the first operating power includes: correcting the target water output to obtain a corrected target water output; and determining the second operating power of the second flow control device using the corrected target water output and the first operating power.

[0009] Optionally, the step of correcting the target water output includes: obtaining the actual water output of the first flow control device operating at a first operating power and the second flow control device operating at a second operating power; determining a first correction coefficient based on the target water output and the actual water output; and correcting the target water output using the first correction coefficient.

[0010] Optionally, the correction of the target water output includes: determining a second correction coefficient based on the first operating power and the second operating power; and correcting the target water output using the second correction coefficient, wherein the second correction coefficient is positively correlated with the first operating power and the second operating power.

[0011] Optionally, determining the first operating power of the first flow control device based on the target outlet water temperature includes: acquiring the initial water temperature in the proportional adjustment unit; calculating a first temperature difference between the target outlet water temperature and the initial water temperature; and determining the first operating power based on the first temperature difference.

[0012] Optionally, after controlling the first flow control device to operate at a first operating power and the second flow control device to operate at a second operating power, the process includes: acquiring the actual outlet water temperature; calculating a second temperature difference between the target outlet water temperature and the actual outlet water temperature; adjusting the first operating power based on the second temperature difference; and adjusting the second operating power based on the adjusted first operating power and the target outlet water volume until the actual outlet water temperature reaches the target temperature, and the water flow rate in the proportional adjustment device corresponding to the first operating power and the second operating power satisfies the preset relationship with the target outlet water volume.

[0013] Optionally, the method for satisfying a preset relationship between the water flow rate in the proportional adjustment device and the first working power and the second working power includes: when the power of the first flow control device and the second flow control device are within a preset range, the actual water output of the first flow control device is VA, the actual water output of the second flow control device is VB, and the water flow rate of the proportional adjustment device is V = VA + VB.

[0014] Optionally, the preset range includes the operating power range P1 of the first flow control device and the operating power range P2 of the second flow control device, and the rated power of the first flow control device is greater than the rated power of the second flow control device, then A≤P1<B, C≤P2≤D, where A is the minimum starting power of the first flow control device, B is the maximum operating power of the first flow control device, C is the minimum starting power of the second flow control device, and D is the maximum operating power of the second flow control device.

[0015] This application enables control of the water flow rate of a flow control device by controlling the operating power of a first flow control device and a second flow control device, thereby achieving the ratio adjustment of hot and cold water to mix water at different temperatures. When the first and second flow control devices operate simultaneously, errors in flow control occur due to mutual influence. The inventors discovered that when the two flow control devices operate simultaneously, their mutual influence varies depending on their operating power. Furthermore, the maximum actual flow rate of the two control devices also differs from the theoretical maximum flow rate due to mutual influence. Therefore, this application specifies that when the first and second flow control devices operate simultaneously, the water flow rate in the ratio adjustment device satisfies a preset relationship with the first and second operating powers. This preset relationship is determined based on the operating power range and maximum actual flow rate of the first and second flow control devices. Under the aforementioned preset relationship, the target outlet water temperature and target outlet water volume are obtained. Based on the target outlet water volume and the first operating power, the second operating power of the second flow control device is determined. The first flow control device is controlled to operate at the first operating power, and the second flow control device is controlled to operate at the second operating power. The first and second operating powers are limited within the operating power range. The first and second operating powers are controlled according to the target outlet water volume as a proportional adjustment device based on the actual maximum flow rate to achieve accurate flow rate calculation, thereby achieving accurate constant temperature and accurate quantitative water output at the maximum flow rate.

[0016] Furthermore, when the first flow control device and the second flow control device operate simultaneously, if the first flow control device is controlled to operate at maximum power and the second flow control device operates at any power, there will be a deviation between the actual water flow rate and the theoretical water flow rate in the proportional adjustment device. Alternatively, if the second flow control device is controlled to operate at maximum power and the first flow control device operates at any power, there will also be a deviation between the actual water flow rate and the theoretical water flow rate in the proportional adjustment device. Under normal operating conditions, the higher the power of the flow control device, the higher the water flow rate. By controlling the power of the flow control device and calculating the actual water flow rate in the proportional adjustment device, it is determined that the maximum actual flow rate of the first flow control device is inversely correlated with the real-time flow rate of the second flow control device, and the maximum actual flow rate of the second flow control device is inversely correlated with the real-time flow rate of the first flow control device. Therefore, limiting the operating power of the first flow control device and / or the second flow control device keeps the operating power of the flow control device within a preset range, ensuring the quantitative and temperature-controlled water output of the water purifier. Attached Figure Description

[0017] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a flowchart of an optional water purifier outlet water control method according to an embodiment of this application;

[0020] Figure 2 This is a schematic diagram of the measured water flow rate of an optional water purifier according to an embodiment of this application;

[0021] Figure 3 This is a schematic diagram showing the theoretical and measured water flow rates of an optional water purifier according to an embodiment of this application.

[0022] Figure 4 This is a schematic diagram showing another theoretical and measured water flow rate of an optional water purifier according to an embodiment of this application;

[0023] Figure 5 This is a schematic diagram showing another theoretical and measured water flow rate of an optional water purifier according to an embodiment of this application;

[0024] Figure 6 This is a schematic diagram showing another theoretical and measured water flow rate of an optional water purifier according to an embodiment of this application;

[0025] Figure 7 This is a schematic diagram of the measured water flow rate of an optional water purifier under different operating conditions according to an embodiment of this application;

[0026] Figure 8 This is a schematic diagram of another measured water flow rate of an optional water purifier under different operating conditions according to an embodiment of this application;

[0027] Figure 9 This is a structural block diagram of an optional electronic device according to an embodiment of this application. Detailed Implementation

[0028] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0029] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application 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 this application 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 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.

[0030] According to one aspect of this application, a water purifier outlet control method is proposed, wherein the water purifier includes a first flow control device, a second flow control device, and a proportional adjustment device, wherein the first flow control device is used to control the flow rate of water at a first initial temperature, the second flow control device is used to control the flow rate of water at a second initial temperature, and the proportional adjustment device is disposed at the outlet of the first flow control device and the second flow control device to converge the outlets of the first flow control device and the second flow control device.

[0031] This application illustrates the use of a first flow control device outputting hot water and a second flow control device outputting cold water. Of course, the first flow control device could also output cold water and the second flow control device outputting hot water; this example is merely illustrative and does not constitute a specific limitation. See also Figure 1 As shown, the water outlet control method includes:

[0032] S10. Obtain the target outlet water temperature and target outlet water volume.

[0033] Users can set their desired water temperature, water volume, and other information through the control panel on the water purifier. After receiving the user's desired information, the controller decodes the information to obtain the target water temperature and target water volume, and controls the water outlet device of the water purifier based on the target water temperature and target water volume.

[0034] S20. Determine the first operating power of the first flow control device based on the target outlet water temperature.

[0035] When the first flow control device and the second flow control device need to work simultaneously, the target outlet water temperature of the water purifier can be achieved by adjusting the hot water and cold water in a certain ratio. After obtaining the target outlet water temperature, PID control can be used to determine the first working power of the first flow control device based on the target outlet water temperature. Specifically, the difference between the initial water temperature and the target temperature in the proportional control device can be determined first, and the first working power can be determined by the temperature difference and PID control.

[0036] S30. Determine the second operating power of the second flow control device based on the target water output and the first operating power.

[0037] After obtaining the first operating power, when the first flow control device and the second flow control device are working simultaneously, the water flow rate of the first flow control device can be determined by the first operating power. The water flow rate of the second flow control device is obtained by subtracting the water flow rate of the first flow control device from the total water flow rate in the proportional adjustment device. Then, the second operating power of the second flow control device is determined based on the water flow rate of the second flow control device to ensure the water purifier. After determining the first operating power and the second operating power corresponding to the target water output and the target water output temperature, the process proceeds to step S40.

[0038] S40. Control the first flow control device to operate at a first operating power, and control the second flow control device to operate at a second operating power.

[0039] By controlling the operating power of the first and second flow control devices, the water flow rate of the flow control device is controlled, thereby achieving the ratio adjustment of hot and cold water to mix water at different temperatures. When the cold water flow control device and the hot water flow control device work simultaneously, there is an error in the flow control due to mutual influence. The inventors found that when the two flow control devices work simultaneously, their mutual influence varies depending on their operating power. Furthermore, the maximum actual flow rate of the two control devices also differs from the theoretical maximum flow rate due to mutual influence. Therefore, this application stipulates that when the first flow control device and the second flow control device work simultaneously, the water flow rate in the ratio adjustment device satisfies a preset relationship with the first operating power and the second operating power. The preset relationship is determined based on the operating power range of the first flow control device and the second flow control device and the maximum actual flow rate. Under the aforementioned preset relationship, the target outlet water temperature and target outlet water volume are obtained. Based on the target outlet water volume and the first operating power, the second operating power of the second flow control device is determined. The first flow control device is controlled to operate at the first operating power, and the second flow control device is controlled to operate at the second operating power. The first and second operating powers are limited within the operating power range. The first and second operating powers are controlled according to the preset relationship based on the target outlet water volume as the water flow in the proportional adjustment device to achieve accurate flow calculation, thereby achieving accurate constant temperature and accurate quantitative water output at the maximum flow rate.

[0040] As an exemplary embodiment, the method for satisfying a preset relationship between the water flow rate in the proportional regulating device and the first and second operating powers includes: when the power of the first flow control device and the second flow control device are within a preset range, the actual water output of the first flow control device is VA, the actual water output of the second flow control device is VB, and the water flow rate of the proportional regulating device is V = VA + VB. The preset range includes the operating power range P1 of the first flow control device and the operating power range P2 of the second flow control device, and the rated power of the first flow control device is greater than the rated power of the second flow control device, then A ≤ P1 < B, C ≤ P2 ≤ D, where A is the minimum starting power of the first flow control device, B is the maximum operating power of the first flow control device, C is the minimum starting power of the second flow control device, and D is the maximum operating power of the second flow control device.

[0041] For example, the water in the first flow control device and the water in the second flow control device can be water at different temperatures or with different qualities. When the water in the first flow control device and the water in the second flow control device are two different types of water, it can be a combination of mineral-free water filtered by RO and mineral-containing water with added other ions, such as outlet water and sparkling water, etc., which is not limited here. When the water in the first flow control device and the water in the second flow control device are two different types of water at different temperatures, it can be a combination of hot water and cold water.

[0042] When the first flow control device is a hot water pump controlling hot water output, and the second flow control device is a cold water pump controlling cold water output, the rated power of the selected hot water pump is greater than the rated power of the cold water pump. The theoretical and measured flow rates in the proportional control device are calculated when the cold water pump power is 25% and the hot water pump power is 25%, 50%, 75%, and 100%, respectively. See also the calculations for the theoretical and measured flow rates in the proportional control device when the hot water pump power is 25% and the cold water pump power is 25%, 50%, 75%, and 100%, respectively. Figure 2 and Figure 3 As shown, where, Figure 2 To measure the actual flow rate, Figure 3 As shown in the figure, the deviation between the theoretical and measured flow rates is due to the fact that, with the power of one pump fixed, the water flow rate into the proportional control device increases as the power of the other pump increases. The deviation between the theoretical and measured flow rates is greatest when one pump is fully operational. The increase in power and the increase in water flow rate in the proportional control device are not strictly linear, but it can be inferred that there is a mutual influence between the cold water pump and the hot water pump. Furthermore, there is a preset relationship between the water flow rate in the proportional control device and the operating power range and maximum actual flow rate of the hot water pump and the cold water pump. When the water purifier meets this preset relationship, the control method can ensure the user's quantitative and temperature control needs.

[0043] Based on the above embodiments, it is now assumed that the working power of the pump in the water purifier is proportional to the water flow rate, and the total water flow rate in the proportional adjustment device is equal to the sum of the water flow rates of each pump. During the mixing process of cold and hot water, the actual maximum flow rates of the hot water pump and the cold water pump are respectively set to gradually reduce the error between the theoretical flow rate and the measured flow rate. Figures 3-6 The deviation between the theoretical and measured flow rates when the actual maximum flow rates of the hot water pump and the cold water pump are partially set can be seen. Figure 6When the actual maximum flow rate of the hot water pump is set to 2000 ml / min and the actual maximum flow rate of the cold water pump is set to 1200 ml / min, the deviation is within 100 ml, except for the hot water pump which has a larger deviation when the working power is 100%. For a quantitative intake of 1500 ml of water, the impact is small. Therefore, when setting the control program of the water purifier, limiting the working power of the hot water pump to 25%-75% and the working power of the cold water pump to 25%-100% best matches the linear relationship.

[0044] As can be seen from the above embodiments, A and C can be 25% full power, which is the minimum starting power of the pump; B can be 75% full power; and D can be 100% full power. Therefore, 25% full power ≤ P1 < 75% full power, and 25% full power ≤ P2 ≤ 100% full power. When the water from the first flow control device and the second flow control device are simultaneously activated and converge, both devices require a minimum starting power, which A and C represent. Since the simultaneous convergence of water from the first and second flow control devices affects the actual outflow velocity of both devices, and if the rated power of the two flow control devices is different, the flow control device with the higher actual outflow velocity will inevitably create back pressure on the flow control device with the lower actual outflow velocity. To reduce this back pressure effect and minimize the flow velocity calculation error caused by the convergence of the two water streams, the maximum operating power of the flow control device with the higher rated power is excluded from the operating power range of the flow control devices in the preset relationship of this application. In other words, the maximum operating power of a flow control device with a large rated power does not include the rated power.

[0045] Based on the operating power range of the first and second flow control devices that satisfy a linear relationship in the above embodiments, the maximum actual flow rate is described in detail:

[0046] The following embodiments use a hot water pump as the first flow control device and a cold water pump as the second flow control device for explanation and illustration.

[0047] In a water purifier, for example, when the cold water pump operates at full power and the hot water pump is not operating, the cold water pump's output flow rate is 1350 ml / min. When the hot water pump operates at full power and the cold water pump is not operating, the hot water pump's output flow rate is 2000 ml / min. However, when both the hot and cold water pumps operate simultaneously, the inventors discovered a discrepancy between the calculated total output flow rate and the actual measured output flow rate. Further research revealed that the maximum flow rate of the first and second flow control devices operating independently differs from their respective maximum actual flow rates when operating simultaneously. If the flow rates differ, the water flows from each flow control device influence each other within the proportional control unit. Therefore, the maximum actual flow rate of the first and second flow control devices is affected by the flow rate of the other. Thus, it is necessary to correct the maximum actual flow rate of the other flow control device based on the real-time flow rate of one flow control device, i.e., to correct the real-time flow rate of the other flow control device, to ensure the accuracy of the flow calculation.

[0048] As an optional embodiment, when the first flow control device and the second flow control device operate simultaneously, the maximum actual flow rate of the first flow control device is determined based on the flow rate of the second flow control device; and / or the maximum actual flow rate of the second flow control device is determined based on the flow rate of the first flow control device. In this embodiment, the actual flow rates of the first and second flow control devices can be determined based on the flow rate of the other, and when calculating the water flow rate in the proportional control unit, it is determined according to the calculated actual flow rate and operating power. This ensures the accuracy of the water flow rate calculation in the proportional control unit.

[0049] As an exemplary embodiment, the following explanation uses a hot water pump as the first flow control device and a cold water pump as the second flow control device. If the actual operating power applied to the hot water pump is greater than that applied to the cold water pump, and the flow rate of the hot water pump is greater than that of the cold water pump, the hot water pump may cause back pressure in the pipe where the hot and cold water pumps meet. Conversely, if the flow rate of the cold water pump is greater than that of the hot water pump, the cold water pump may cause back pressure in the pipe where the hot and cold water pumps meet. Therefore, in this embodiment, the maximum actual flow rate of the first flow control device is inversely correlated with the real-time flow rate of the second flow control device; and / or the maximum actual flow rate of the second flow control device is inversely correlated with the real-time flow rate of the first flow control device.

[0050] In this embodiment, when calculating the maximum flow rate, the maximum actual flow rate of one flow control device can be calculated based on the real-time flow rate of another flow control device. For example, the larger the real-time flow rate of the second flow control device, the greater the back pressure exerted on the first flow control device, thus the smaller the maximum actual flow rate of the first flow control device. Conversely, the larger the real-time flow rate of the first flow control device, the greater the back pressure, and therefore the smaller the maximum actual flow rate of the second flow control device. For instance, when the cold water pump is operating at full power and the hot water pump is not operating, the cold water pump's outlet flow rate is 1350 ml / min. When the hot water pump is operating at full power and the cold water pump is not operating, the hot water pump's outlet flow rate is 2000 ml / min. As the operating power of the hot water pump increases, the maximum actual flow rate of the cold water pump decreases and cannot reach its peak value. For example, when the hot water pump's outlet flow rate is 2000 ml / min, the maximum actual flow rate of the cold water pump is 1200 ml / min. As another example, when the hot water pump's outlet flow rate is 1000 ml / min, the maximum actual flow rate of the cold water pump is 1250 ml / min. When the real-time flow rate of the cold water pump is 1000 ml / min, the maximum actual flow rate of the hot water pump is 1900 ml / min. When the real-time flow rate of the cold water pump is 600 ml / min, the maximum actual flow rate of the hot water pump is 1950 ml / min. Therefore, the maximum actual flow rate of the cold water pump decreases as the real-time flow rate of the hot water pump increases. And / or, the maximum actual flow rate of the hot water pump decreases as the real-time flow rate of the cold water pump increases.

[0051] As an optional embodiment, the actual operating power applied to the hot water pump and the cold water pump varies depending on the target outlet water temperature and target outlet water flow rate. Generally, if the actual operating power applied to the hot water pump is greater than that applied to the cold water pump, the flow rate of the hot water pump will be greater than that of the cold water pump when the hot and cold water meet. The hot water pump may cause back pressure in the cold water pump. Therefore, in addition to the actual flow rate affecting the flow rates of the two water streams due to the meeting, the actual flow rate of the cold water pump will also decrease. Conversely, if the actual operating power applied to the cold water pump is greater than that applied to the hot water pump, the flow rate of the cold water pump will be greater than that of the hot water pump when the hot and cold water meet. The cold water pump may cause back pressure in the hot water pump. Therefore, in addition to the actual flow rate affecting the flow rates of the two water streams due to the meeting, the actual flow rate of the hot water pump will also decrease. Therefore, it can be assumed that when hot and cold water meet, the pump with a higher actual operating power will cause the pump with a lower actual operating power to experience back pressure. In other words, the pump with a higher actual operating power will affect the actual flow rate of the pump with a lower actual operating power.

[0052] As an exemplary embodiment, determining the second operating power of the second flow control device based on the target water output and the first operating power includes: correcting the target water output to obtain a corrected target water output; and determining the second operating power of the second flow control device using the corrected target water output and the first operating power.

[0053] In this embodiment, see Figures 3-6 As shown, there is a deviation between the theoretical flow rate and the measured flow rate of the total water flow in the proportional control device. Therefore, it is necessary to make the total water flow in the proportional control device meet the preset power with the first working power and the second working power. That is, it is necessary to correct some parameters involved in the operation of the water purifier.

[0054] As an exemplary embodiment, since there is a deviation between the actual water output and the target water output, in this embodiment, the target water output can be corrected, and the second operating power of the second flow control device can be determined by the corrected target water output and the first operating power. Optionally, after determining the target water output, if the actual water output differs from the target water output when the first and second operating powers are controlled according to the target water output, the water output can be directly corrected by setting a correction coefficient. This correction coefficient can be determined by the difference between the actual water output and the target water output when the first flow control device operates at the first operating power and the second flow control device operates at the second operating power. For example, after determining that the theoretical flow rate and the measured flow rate of water in the proportional adjustment device can be reduced to a large extent, the actual maximum flow rate of the hot water pump is set to 2000 ml / min. After determining the actual maximum flow rate of the cold water pump to be 1200 ml / min, to further reduce errors, some parameters of the water purifier during operation can be corrected. To make the correction more accurate, when setting the target outlet water temperature, three target outlet water temperatures can be selected: the highest outlet water temperature when the hot water pump power is at its maximum and the cold water pump power is at its minimum; the lowest outlet water temperature when the hot water pump power is at its minimum and the cold water pump power is at its maximum; and the intermediate outlet water temperature when both the hot water pump and the cold water pump power are at 50%. Taking the requirement of taking 1500 ml of water as an example, the target outlet water temperatures can be set to 45℃, 58℃, and 70℃ respectively. See [link / reference]. Figure 7 As shown, it is easy to see that when the water purifier operates at the flow rate under the three working conditions for one minute, the water output is greater than the target water output. The reason for this situation may be that the target water output set when the water purifier is working is too large. If the target water output is reduced, the water output of the water purifier under the three working conditions will also decrease accordingly. The target water output is reduced to 1400ml, and other parameters remain unchanged. The actual water output flow rate of the water purifier under the three working conditions is measured again.

[0055] For example, see Figure 8 As shown, the water purifier is Figure 8 When the water purifier operates at a certain flow rate for one minute, the maximum deviation from 1500ml is 40ml, which is relatively small compared to 1500ml. Reducing the target flow rate by 100ml yields the corrected result. A time parameter is needed to convert between flow rate and flow rate. When the water purifier operates for one minute, the flow rate equals the flow rate. Therefore, see the following formula:

[0056] S 总 =(S 冷 +S 热 )*K

[0057] Among them, S 总 For the target outflow rate, S 冷 S represents the chilled water flow rate of the chilled water pump. 热 Let K be the hot water flow rate of the hot water pump, and K be the first correction coefficient. By correcting the target output water volume (i.e., the target output water flow rate), and calculating the first operating power of the hot water pump and the second operating power of the cold water pump based on the corrected target output water flow rate, and controlling the operation of the water purifier based on the first and second operating powers, the error can be further reduced, thus achieving quantitative water dispensing.

[0058] As another optional embodiment, the first correction coefficient K can be a fixed value or determined based on the target water output. When different target water outputs are selected, the actual water output differs from the target water output. Therefore, the target water output can be corrected according to a correction coefficient for different target water outputs.

[0059] See Figure 7 The figures shown in Figure 8 illustrate the actual water output obtained with a target water volume of 1500ml and 1400ml, respectively. Different target water volumes correspond to different correction coefficients; the larger the target water output, the greater the deviation, and therefore the larger the correction coefficient. The correction coefficient can be dynamically adjusted based on the set target water output to make the actual water output closer to the target water output.

[0060] As another optional embodiment, the correction of the target water output can also be made according to the actual working state of the first flow control device and the second flow control device. For example, after determining the first working power of the first flow control device and the second working power of the second flow control device, a second correction coefficient can be determined based on the first working power and the second working power. That is, when the hot water pump and the cold water pump are actually working, under different working power and under different working power combinations, due to the existence of back pressure due to mutual influence, the difference between the actual water output and the set target water output is different. Therefore, the correction coefficient can be dynamically adjusted using the actual working power of the first flow control device and the second flow control device.

[0061] As an optional embodiment, the second correction coefficient is positively correlated with the first operating power and the second operating power. The higher the first and second operating powers, the greater the water output rate and the greater the difference between the actual water output and the target water output. Therefore, by dynamically correcting the target flow rate using the actual operating states of the first and second flow control devices, targeted corrections can be made according to the actual operating states, making the actual water output closer to the target water output.

[0062] The target water output is corrected using the second correction coefficient, which is positively correlated with both the first and second operating powers. Specifically, the higher the first and second operating powers, the higher the water output rate, and the greater the difference between the actual and target water output. (See [reference]). Figure 7 The actual water output obtained with a target water volume of 1500ml is shown, and Figure 8 The actual water output shown is based on a target water volume of 1400ml. A larger output volume results in a larger flow rate from the proportional control unit, leading to higher first and second operating power. Therefore, a larger second correction parameter can be used to correct the target output volume. Dynamically correcting the target flow rate using the actual operating states of the first and second flow control devices allows for targeted adjustments based on the actual operating conditions, making the actual output volume closer to the target output volume.

[0063] As another optional embodiment, when the first flow control device and the second flow control device operate simultaneously, when the total flow rate exceeds a preset value, i.e., the target water volume exceeds a preset value (e.g., exceeding 1500 ml), the back pressure exerted by the flow control device with the larger flow rate on the flow control device with the smaller flow rate will be more significant. Furthermore, the greater the difference between the first and second actual operating power, the greater the difference in their flow rates. Therefore, the higher the back pressure, the slower the water output from the flow control device with the smaller flow rate, resulting in a smaller actual water output. Consequently, the difference between the actual water output and the target water output decreases. See details. Figure 7 As shown, when the target temperature is 45℃, the cold water flow rate is greater than the hot water flow rate; when the target temperature is 58℃, the difference between the cold and hot water flow rates is not significant; and when the target temperature is 70℃, the hot water flow rate is greater than the cold water flow rate. Therefore, the smaller the difference between the first and second actual operating power, the greater the difference between the actual and target water output, thus requiring a larger correction parameter. The correction parameter is inversely correlated with the difference between the first and second actual operating power.

[0064] For example, the first actual operating power and the second actual operating power can be the actual duty cycle of the first flow control device and the actual duty cycle of the second flow control device. When determining the correction parameter, the correction parameter can be determined based on the magnitude of the duty cycles of the two devices.

[0065] As an exemplary embodiment, determining the first operating power of the first flow control device based on the target outlet water temperature includes: acquiring the initial water temperature in the proportional adjustment unit; calculating a first temperature difference between the target outlet water temperature and the initial water temperature; and determining the first operating power based on the first temperature difference. In this embodiment, the initial water temperature and target outlet water temperature in the proportional control unit are obtained, and the first temperature difference between the initial water temperature and the target outlet water temperature in the proportional control unit is calculated. Using the first temperature difference as the input value, the first operating power of the hot water pump can be obtained by using PID control. Specifically, the initial water in the proportional control unit is formed by the convergence of hot water flowing from the hot water pump and cold water flowing from the cold water pump. The amount of hot and cold water can affect the initial water temperature in the proportional control unit. The more hot water, the higher the initial water temperature. The amount of hot water is positively correlated with the first operating power of the hot water pump. Therefore, the initial water temperature in the proportional control unit is related to the first operating power. The first operating power of the hot water pump can be determined by PID control based on the first temperature difference between the initial water temperature and the target water temperature. The water flow rate of the hot water pump can be calculated using the first operating power, and the water flow rate of the cold water pump can be calculated based on the target water flow rate. Then, the second operating power of the cold water pump can be determined by the water flow rate of the cold water pump. The target water flow rate is then corrected based on the first and second operating powers to obtain the corrected target water flow rate. By controlling the operation of the water purifier, it can be ensured that the water purifier can achieve constant temperature and quantitative water output.

[0066] As an exemplary embodiment, the step of controlling the first flow control device to operate at a first operating power and controlling the second flow control device to operate at a second operating power includes: acquiring the actual outlet water temperature; calculating a second temperature difference between the target outlet water temperature and the actual outlet water temperature; adjusting the first operating power based on the second temperature difference; adjusting the second operating power based on the adjusted first operating power and the target outlet water volume until the actual outlet water temperature reaches the target temperature, and the water flow rate in the proportional adjustment device corresponding to the first operating power and the second operating power satisfies the preset relationship with the target outlet water volume. In this embodiment, the actual outlet water temperature may be higher or lower than the target outlet water temperature. In this case, the second temperature difference between the actual outlet water temperature and the target outlet water temperature is calculated. When the actual outlet water temperature is higher than the target outlet water temperature, the first working power is reduced to reduce the hot water volume. When the actual outlet water temperature is lower than the target outlet water temperature, the first working power is increased to increase the hot water volume. After adjusting the first working power, the second working power is adjusted based on the adjusted first working power and the target water removal volume until the actual outlet water temperature meets the target outlet water temperature. After adjusting the first working power and the second working power, the target water output volume is adjusted based on the adjusted first working power and the second working power, so that the water flow rate in the proportional adjustment device corresponding to the first working power and the second working power and the target water output volume meets the preset relationship, ensuring that the water purifier outputs water at a constant temperature and in a fixed quantity.

[0067] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods according to the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM (Read-Only Memory) / RAM (Random Access Memory), magnetic disk, optical disk), and includes several instructions to cause a terminal device (which may be a mobile phone, computer, server, or network device, etc.) to execute the methods described in the various embodiments of this application.

[0068] According to another aspect of the embodiments of this application, an electronic device for implementing the above-described water purifier outlet control method is also provided. The electronic device may be a server, a terminal, or a combination thereof.

[0069] Figure 9 This is a structural block diagram of an optional electronic device according to an embodiment of this application, such as... Figure 9As shown, it includes a processor 502, a communication interface 504, a memory 506, and a communication bus 508. The processor 502, communication interface 504, and memory 506 communicate with each other via the communication bus 508.

[0070] Memory 506 is used to store computer programs;

[0071] When processor 502 executes a computer program stored in memory 506, it performs the following steps:

[0072] Obtain the target outlet water temperature and target outlet water volume;

[0073] The first operating power of the first flow control device is determined based on the target outlet water temperature.

[0074] The second operating power of the second flow control device is determined based on the target water output and the first operating power.

[0075] The first flow control device is controlled to operate at a first operating power, and the second flow control device is controlled to operate at a second operating power.

[0076] Optionally, in this embodiment, the communication bus can be a PCI (Peripheral Component Interconnect) bus or an EISA (Extended Industry Standard Architecture) bus, etc. This communication bus can be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Figure 9 The bus is represented by a single thick line, but this does not mean that there is only one bus or one type of bus.

[0077] The communication interface is used for communication between the aforementioned electronic devices and other devices.

[0078] The memory may include RAM, or non-volatile memory, such as at least one disk storage device. Optionally, the memory may also be at least one storage device located remotely from the aforementioned processor.

[0079] As an example, such as Figure 9 As shown, the memory 502 may include, but is not limited to, the module units in the water purifier described above, which will not be elaborated further in this example.

[0080] The processor mentioned above can be a general-purpose processor, including but not limited to: CPU (Central Processing Unit), NP (Network Processor), etc.; it can also be DSP (Digital Signal Processor), ASIC (Application Specific Integrated Circuit), FPGA (Field-Programmable Gate Array) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components.

[0081] Optionally, specific examples in this embodiment can refer to the examples described in the above embodiments, and will not be repeated here.

[0082] Those skilled in the art will understand that Figure 9 The structure shown is for illustrative purposes only. The device that implements the above-described water purifier outlet control method can be a terminal device, such as a smartphone (e.g., Android phone, iOS phone), tablet computer, PDA, mobile internet device (MID), PAD, etc. Figure 9 This does not limit the structure of the aforementioned electronic device. For example, the terminal device may also include components that are more... Figure 9 The more or fewer components shown (such as network interfaces, display devices, etc.), or having the same Figure 9 The different configurations shown.

[0083] Those skilled in the art will understand that all or part of the steps in the various methods of the above embodiments can be implemented by a program instructing the hardware related to the terminal device. The program can be stored in a computer-readable storage medium, which may include: flash drive, ROM, RAM, disk or optical disk, etc.

[0084] According to another aspect of the embodiments of this application, a storage medium is also provided. Optionally, in this embodiment, the storage medium can be used to execute program code for a water purifier outlet control method.

[0085] Optionally, in this embodiment, the storage medium may be located on at least one of the multiple network devices in the network shown in the above embodiment.

[0086] Optionally, in this embodiment, the storage medium is configured to store program code for performing the following steps:

[0087] Obtain the target outlet water temperature and target outlet water volume;

[0088] The first operating power of the first flow control device is determined based on the target outlet water temperature.

[0089] The second operating power of the second flow control device is determined based on the target water output and the first operating power.

[0090] The first flow control device is controlled to operate at a first operating power, and the second flow control device is controlled to operate at a second operating power.

[0091] Optionally, specific examples in this embodiment can refer to the examples described in the above embodiments, and will not be repeated in this embodiment.

[0092] Optionally, in this embodiment, the storage medium may include, but is not limited to, various media capable of storing program code, such as USB flash drives, ROM, RAM, portable hard drives, magnetic disks, or optical disks.

[0093] The sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0094] If the integrated units in the above embodiments are implemented as software functional units and sold or used as independent products, they can be stored in the aforementioned computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause one or more computer devices (which may be personal computers, servers, or network devices, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application.

[0095] In the above embodiments of this application, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0096] In the several embodiments provided in this application, it should be understood that the disclosed client can be implemented in other ways. The device embodiments described above are merely illustrative; for example, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces, indirect coupling or communication connection between units or modules, and may be electrical or other forms.

[0097] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of the solution provided in this embodiment, depending on actual needs.

[0098] The technical solutions of this application have been described in conjunction with the preceding embodiments. However, it will be readily understood by those skilled in the art that the scope of protection of this application is not limited to these specific embodiments. Without departing from the technical principles of this application, those skilled in the art can disassemble and combine the technical solutions in the above embodiments, and can also make equivalent changes or substitutions to the relevant technical features. Any changes, equivalent substitutions, improvements, etc., made within the technical concept and / or technical principles of this application will fall within the scope of protection of this application.

[0099] The various embodiments in this specification are described in a progressive manner. Similar or identical parts between embodiments can be referred to interchangeably. Each embodiment focuses on describing the differences from other embodiments. In particular, the system embodiments are basically similar to the method embodiments, so the description is relatively simple; relevant parts can be referred to the descriptions in the method embodiments.

[0100] The above are merely embodiments of the present invention and are not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of the present invention should be included within the scope of the claims of the present invention.

Claims

1. A method for controlling the water output of a water purifier, characterized in that, The water purifier includes a first flow control device, a second flow control device, and a proportional adjustment device. The first flow control device controls the flow rate of water at a first initial temperature, and the second flow control device controls the flow rate of water at a second initial temperature. The proportional adjustment device is located at the outlets of the first and second flow control devices to facilitate the convergence of the water outputs from both devices. The water output control method includes: Obtain the target outlet water temperature and target outlet water volume; The first operating power of the first flow control device is determined based on the target outlet water temperature. The second operating power of the second flow control device is determined based on the target water output and the first operating power. The first flow control device is controlled to operate at a first operating power, and the second flow control device is controlled to operate at a second operating power; When the first flow control device and the second flow control device work simultaneously, the water flow rate in the proportional adjustment device satisfies a preset relationship with the first working power and the second working power. The preset relationship is determined based on the working power range of the first flow control device and the second flow control device and the maximum actual flow rate.

2. The water purifier outlet water control method as described in claim 1, characterized in that, When the first flow control device and the second flow control device operate simultaneously The maximum actual flow rate of the first flow control device is determined based on the flow rate of the second flow control device; and / or The maximum actual flow rate of the second flow control device is determined based on the flow rate of the first flow control device.

3. The water purifier outlet water control method as described in claim 2, characterized in that, The maximum actual flow rate of the first flow control device is inversely correlated with the real-time flow rate of the second flow control device. and / or The maximum actual flow rate of the second flow control device is inversely correlated with the real-time flow rate of the first flow control device.

4. The water purifier outlet water control method as described in claim 1, characterized in that, Determining the second operating power of the second flow control device based on the target water output and the first operating power includes: correcting the target water output to obtain a corrected target water output. The second operating power of the second flow control device is determined based on the corrected target water output and the first operating power.

5. The water purifier outlet water control method as described in claim 4, characterized in that, The correction of the target water output includes: The actual water output of the first flow control device operating at a first operating power and the second flow control device operating at a second operating power is obtained. A first correction coefficient is determined based on the target water output and the actual water output, and the target water output is corrected using the first correction coefficient.

6. The water purifier outlet water control method as described in claim 4, characterized in that, The correction of the target water output includes: A second correction coefficient is determined based on the first operating power and the second operating power; The target water output is corrected using the second correction factor.

7. The water purifier outlet water control method as described in claim 1, characterized in that, Determining the first operating power of the first flow control device based on the target outlet water temperature includes: Obtain the initial water temperature in the proportional adjustment device; Calculate the first temperature difference between the target outlet water temperature and the initial water temperature; The first operating power is determined based on the first temperature difference.

8. The water purifier outlet control method as described in claim 1, characterized in that, The step of controlling the first flow control device to operate at a first operating power and controlling the second flow control device to operate at a second operating power includes: Obtain the actual outlet water temperature; Calculate the second temperature difference between the target outlet water temperature and the actual outlet water temperature; The first operating power is adjusted based on the second temperature difference; The second working power is adjusted based on the adjusted first working power and the target water output, until the actual water output temperature reaches the target water output temperature, and the water flow rate in the proportional adjustment device corresponding to the first working power and the second working power satisfies the preset relationship with the target water output.

9. The water purifier outlet control method as described in claim 1, characterized in that, The method for ensuring that the water flow rate in the proportional control device satisfies a preset relationship with the first working power and the second working power includes: When the power of the first flow control device and the second flow control device are within a preset range, the actual water output of the first flow control device is VA, the actual water output of the second flow control device is VB, and the water flow rate of the proportional adjustment device is V = VA + VB.

10. The water purifier outlet control method as described in claim 9, characterized in that, The preset range includes the operating power range P1 of the first flow control device and the operating power range P2 of the second flow control device. The rated power of the first flow control device is greater than the rated power of the second flow control device. Then, A≤P1<B, C≤P2≤D, where A is the minimum starting power of the first flow control device and B is the maximum operating power of the first flow control device. C is the minimum starting power of the second flow control device, and D is the maximum operating power of the second flow control device.

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