Control method of water dispenser, water dispenser, equipment, medium and product

Abstract

The invention provides a water dispenser control method, a water dispenser, equipment, a medium and a product, the control method comprises the following steps: in response to the temperature at a water outlet of a heating module being greater than a temperature threshold value and / or in response to the temperature at the water outlet of the heating module being greater than a set outlet water temperature and the temperature rise speed being greater than a speed threshold value, controlling a second motor pump to operate, water output by the heating module is pumped back to the water storage module; the temperature threshold value is not smaller than the set outlet water temperature; a first motor pump is controlled to operate, so that the water storage module discharges water to the heating module; when the temperature of the water outlet of the heating module falls into the range of the set water outlet temperature and the temperature threshold value and the temperature rise speed is not larger than the speed threshold value, the water dispenser is controlled to discharge water. According to the embodiment of the invention, by starting back pumping and pressure relief of the second motor pump, steam injection prevention protection is carried out on the heating module, steam injection and instability of the water outlet temperature are prevented, the temperature of the water outlet of the heating module can be quickly recovered to the set water outlet temperature, and sudden change of the water temperature is prevented.

Description

Technical Field

[0001] The present disclosure relates to the technical field of water dispenser control, and in particular to a water dispenser control method, a water dispenser, equipment, a medium, and a product. Background Art

[0002] For instant heating, the heating body is generally installed on the water outlet (such as a faucet). When the heating body is heated, once the temperature is too high, it is easy to cause a large amount of steam spraying. That is, because the temperature of the water in the heating body is too high, the water will vaporize due to the high temperature after heating, forming a large amount of gas at the water outlet of the heating body. The large amount of gas at the water outlet will cause the local pressure of the water outlet of the heating body to increase. The increase in the local pressure at the water outlet of the heating body will cause the water outlet of the motor pump to be pressurized, and the flow rate through the heating body will decrease. After the flow rate decreases, the temperature of the water heated by the heating body will be higher or continue to increase, forming more gas, thereby forming a large amount of steam spraying at the water outlet. At this time, it is necessary to stop heating or reduce the heating power to a very small level to eliminate the steam spraying, but due to low-power heating, the problem of the water outlet temperature being too low after the steam spraying ends will occur. Summary of the invention

[0003] The technical problem to be solved by the present disclosure is to overcome the defects in the prior art that the pressure at the water outlet of the water dispenser is too high and the outlet water temperature cannot be accurately controlled during the instant heating process, and to provide a control method for a water dispenser and a water dispenser, equipment, medium and product.

[0004] The present invention solves the above technical problems through the following technical solutions:

[0005] In a first aspect, a control method for a water dispenser is provided, wherein the water dispenser comprises a water storage module, a heating module, a first motor pump, and a second motor pump, wherein two ends of the first motor pump are respectively connected to a water outlet of the water storage module and a water inlet of the heating module, and two ends of the second motor pump are respectively connected to a water outlet of the heating module and a water inlet of the water storage module;

[0006] The control method comprises:

[0007] In response to the temperature at the water outlet of the heating module being greater than a temperature threshold, and / or in response to the temperature at the water outlet of the heating module being greater than a set water outlet temperature and the temperature rise rate being greater than a speed threshold, controlling the second motor pump to operate so as to pump the water output by the heating module back to the water storage module; the temperature threshold is not less than the set water outlet temperature;

[0008] Controlling the first motor pump to operate so that the water storage module discharges water to the heating module;

[0009] In response to the temperature at the water outlet of the heating module falling within the range of the set water outlet temperature and the temperature threshold and the temperature rise rate is not greater than the rate threshold, the water dispenser is controlled to discharge water.

[0010] Optionally, in response to the temperature at the water outlet of the heating module being greater than a set water outlet temperature and the temperature rise rate being greater than a speed threshold, controlling the second motor pump to operate includes:

[0011] In response to the temperature at the water outlet of the heating module being greater than the set water outlet temperature, and the temperature rise detected at least twice within a preset time period being greater than the temperature rise threshold, the second motor pump is controlled to operate.

[0012] Optionally, controlling the second motor pump to operate includes:

[0013] Adjusting the speed of the second motor pump; wherein the speed of the second motor pump is positively correlated with the temperature rise rate, and / or the speed of the second motor pump is positively correlated with the heating power of the heating module, and / or the speed of the second electrode is positively correlated with the first temperature difference; the first temperature difference is the difference between the temperature at the water outlet of the heating module and the set water outlet temperature;

[0014] And / or, adjust the power of the second motor pump; the power of the second motor pump is positively correlated with the temperature rise rate, and / or the power of the second motor pump is positively correlated with the heating power of the heating module, and / or the power of the second motor pump is positively correlated with the first temperature difference.

[0015] Optionally, the controlling the first motor pump to operate so that the water storage module discharges water to the heating module further includes:

[0016] In response to the temperature at the water outlet of the heating module being not less than the set water outlet temperature and not greater than the temperature threshold, the second motor pump is controlled to stop running.

[0017] Optionally, the control method further includes:

[0018] In response to the temperature at the water inlet of the heating module being lower than the set water outlet temperature, determining a first flow rate of water flowing through the heating module according to the quotient of a first parameter and a second parameter; the first parameter being the product of the heating power of the heating module and the unit time, the second parameter being the product of the specific heat capacity of water and a second temperature difference, the second temperature difference being the difference between the temperature at the water inlet of the heating module and the set water outlet temperature;

[0019] Determining a first control parameter corresponding to the first flow rate according to a correspondence between the flow rate and the control parameter;

[0020] The first motor pump is controlled to operate with a first control parameter so that the water storage module discharges water to the heating module.

[0021] Optionally, the control method further includes:

[0022] In response to the temperature at the water outlet of the heating module being lower than the set water outlet temperature, controlling the second motor pump to operate so as to pump the water outputted by the heating module back to the water storage module;

[0023] In response to the heating power of the heating module being not less than the rated power, a second flow rate flowing through the heating module is determined according to the quotient of the third parameter and the fourth parameter; a second control parameter corresponding to the second flow rate is determined according to the corresponding relationship between the flow rate and the control parameter; and the first motor pump is controlled to operate with the second control parameter; the third parameter is the product of the heating power of the heating module and the unit time, the fourth parameter is the product of the specific heat capacity of water and the third temperature difference, and the third temperature difference is the difference between the temperature at the water inlet of the heating module and the set water outlet temperature;

[0024] In response to the heating power of the heating module being less than the rated power, the heating power of the heating module is adjusted based on a PID algorithm.

[0025] In a second aspect, a water dispenser is provided, the water dispenser comprising a water storage module, a heating module, a first motor pump, a first temperature detection module, a second temperature detection module and a controller;

[0026] A water storage module, used for storing water;

[0027] A heating module, used for heating the water output by the water storage module;

[0028] A first motor pump, one end of which is connected to the water outlet of the water storage module, and the other end of which is connected to the water inlet of the heating module;

[0029] A second motor pump, one end of which is connected to the water outlet of the heating module, and the other end of which is connected to the water inlet of the water storage module;

[0030] The controller is electrically connected to the first motor pump, the second motor pump, the first temperature detection module and the second temperature detection module respectively; the controller is used to implement the control method described in the first aspect.

[0031] Optionally, a one-way valve is provided between the heating module and the water outlet of the water dispenser;

[0032] and / or,

[0033] The water dispenser comprises a composite filter element and a nanofiltration membrane filter element, and the composite filter element and the nanofiltration membrane filter element are arranged between the water storage module and the water inlet of the water dispenser.

[0034] According to a third aspect, an electronic device is provided, comprising a memory, a processor, and a computer program stored in the memory and used to run on the processor, wherein the processor implements the control method according to the first aspect when executing the computer program.

[0035] According to a fourth aspect, a computer-readable storage medium is provided, on which a computer program is stored, and when the computer program is executed by a processor, the control method according to the first aspect is implemented.

[0036] According to a fifth aspect, a computer program product is provided, comprising a computer program, wherein when the computer program is executed by a processor, the control method according to the first aspect is implemented.

[0037] On the basis of being in accordance with the common sense in the art, the above-mentioned preferred conditions can be arbitrarily combined to obtain the preferred embodiments of the present disclosure.

[0038] The positive progressive effect of the present disclosure is that in the embodiment of the present disclosure, when the temperature of the water outlet of the heating module is greater than the temperature threshold or the temperature rise is greater than the speed threshold, it is determined that there is a risk of steam spraying at the water outlet of the water dispenser, and the heating module is protected against steam spraying by starting the backflow and pressure relief of the second motor pump to prevent steam spraying and unstable water outlet temperature. The temperature of the water outlet of the heating module can be quickly restored to the set water outlet temperature to prevent sudden changes in water temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 A schematic diagram of the structure of a water dispenser provided by an exemplary embodiment of the present disclosure;

[0040] Figure 2 A first flow chart of a method for controlling a water dispenser provided by an exemplary embodiment of the present disclosure;

[0041] Figure 3 A second flow chart of a method for controlling a water dispenser provided by an exemplary embodiment of the present disclosure;

[0042] Figure 4 A third flow chart of a method for controlling a water dispenser provided by an exemplary embodiment of the present disclosure;

[0043] Figure 5 A control flow chart of a first motor pump of a control method for a water dispenser provided by an exemplary embodiment of the present disclosure;

[0044] Figure 6 A control flow chart of a first motor pump and a second motor pump of a control method for a water dispenser provided by an exemplary embodiment of the present disclosure;

[0045] Figure 7A fourth flow chart of a method for controlling a water dispenser provided by an exemplary embodiment of the present disclosure;

[0046] Figure 8 A schematic structural diagram of another water dispenser provided by an exemplary embodiment of the present disclosure;

[0047] Fig. 9 A schematic structural diagram of an electronic device provided by an exemplary embodiment of the present disclosure. DETAILED DESCRIPTION

[0048] The present disclosure is further described below by way of examples, but the present disclosure is not limited to the scope of the examples.

[0049] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various places in the text does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0050] As shown in this document, unless the context clearly indicates an exception, the words "a", "an", "an" and / or "the" do not refer to the singular and may also include the plural, unless the context clearly indicates an exception. Generally speaking, the terms "include" and "comprise" only indicate that the steps and elements that have been clearly identified are included, and these steps and elements do not constitute an exclusive list. The method or device may also include other steps or elements.

[0051] The definitions of inclusion in this document, such as the terms "having", "may have", "include" or "may include" used herein, indicate the existence of the corresponding functions, operations, elements, etc. herein, and do not limit the existence of one or more other functions, operations, elements, etc. In addition, it should be understood that the terms "including" or "having" used herein indicate the existence of the features, numbers, steps, operations, elements, components, or a combination thereof described in the specification, without excluding the existence or addition of one or more other features, numbers, steps, operations, elements, components, or a combination thereof.

[0052] Prefixes such as "first" and "second" are used in the embodiments of the present disclosure only to distinguish different description objects, and have no limiting effect on the position, order, priority, quantity or content of the described objects. The use of prefixes such as ordinal numbers to distinguish description objects in the embodiments of the present disclosure does not constitute a limitation on the described objects. For the statement of the described objects, please refer to the description in the context of the claims or embodiments, and no unnecessary limitation should be constituted due to the use of such prefixes. In addition, in the description of the present embodiment, unless otherwise specified, the meaning of "plurality" is two or more.

[0053] An exemplary embodiment of the present disclosure provides a water dispenser such as Figure 1 As shown, the water dispenser includes a water storage module 11, a heating module 13, a first motor pump 12, and a second motor pump 14. The two ends of the first motor pump 12 are respectively connected to the water outlet of the water storage module 11 and the water inlet of the heating module 13, and the two ends of the second motor pump 14 are respectively connected to the water outlet of the heating module 13 and the water inlet of the water storage module 11.

[0054] The water storage module is used to store water, the first motor pump is used to pump water from the water storage module to the heating module, the heating module is used to heat water, and the second motor pump is used to pump water output from the heating module back to the heat storage module.

[0055] Taking the case where the water temperature output by the heating module does not meet the condition as an example, the water dispenser is explained as an example. When water is needed, the water in the water storage module is pumped to the heating module through the first motor pump, and the heating module is heated. When the water temperature output by the heating module does not meet the condition, the second motor pump pumps the water output by the heating module back to the heat storage module, and the water dispenser does not produce water. The first motor pump pumps the water in the heat storage module to the heating module again for heating, and the cycle continues until the water temperature output by the heating module meets the condition.

[0056] Combine the following Figure 1 The control process of the water dispenser is further explained. Figure 2 This is a flow chart of a control method for a water dispenser provided by an exemplary embodiment of the present disclosure. The control method for the water dispenser includes the following steps:

[0057] S21. In response to the temperature at the water outlet of the heating module being greater than a temperature threshold, controlling the second motor pump to operate so as to pump the water outputted by the heating module back to the water storage module.

[0058] The temperature threshold is set according to the actual situation. The temperature threshold is determined according to the local boiling point and is generally slightly smaller than the boiling point. For example, when the local boiling point is 100°C, the temperature threshold is set to 98°C.

[0059] The water dispenser in the disclosed embodiment may also be an all-in-one water purifier and heat dispenser, the heating module may be a heating body, the water storage module may be a pressure buffer, and the water outlet of the water dispenser may be a faucet.

[0060] When the temperature at the water outlet of the heating module is greater than the temperature threshold, it means that the temperature is too high and exceeds the maximum protection temperature. At this time, the water dispenser may produce steam spraying. The second motor pump is controlled to operate, pump back and release pressure, and pump the water at the water outlet of the heating module back to the water storage module. The temperature at the water outlet of the heating module is continuously detected, and the flow rate of the water back at the water outlet of the heating module is increased by 50ml / min to 100ml / min in 0.1 seconds until the temperature is lower than the maximum protection temperature, and then the second motor pump is stopped.

[0061] When the temperature at the water outlet of the heating module is greater than the temperature threshold, it means that the temperature is too high. Due to factors such as the thermal inertia of the heating body and the deviation of the motor pump flow rate, the water outlet temperature of the heating module is easily overheated. At this time, steam spraying is extremely likely to occur, and the steam spraying cannot be stopped all at once. That is, because the temperature of the water in the heating module is too high, the water will vaporize when the temperature is too high after heating, forming a large amount of gas at the water outlet of the heating module, and the water outlet will be suffocated, causing the local pressure at the water outlet of the heating module to increase, thereby pressurizing the water outlet of the water storage module, and the flow rate flowing through the heating module becomes smaller. The temperature of the water inside the heating module will be higher or continue to rise, forming more steam spraying, and the water outlet is more likely to be suffocated.

[0062] In this embodiment, when the temperature at the water outlet of the heating module is greater than the temperature threshold, the second motor pump is controlled to operate, perform back pumping and pressure relief, and draw the water output by the heating module back to the water storage module. When the second motor pump performs the back pumping operation, the water pressure in the water dispenser pipeline will increase, which helps to dissolve the previously released gas back into the liquid, prevents the formation of pressure holding due to air holding, thereby reducing the formation of steam spray, and protects the heating module against steam spray, so that the flow rate flowing through the heating module reaches a normal value, thereby quickly restoring the temperature of the water outlet of the heating module to the set water outlet temperature, achieving rapid temperature stabilization, and preventing sudden changes in water temperature.

[0063] In one embodiment, the heating control of the heating module adopts a PID control algorithm, which is combined with a strategy of controlling the operation of the second motor pump when the temperature at the water outlet of the heating module is greater than a temperature threshold, to ensure that the hot water temperature output by the water dispenser is stable and meets user needs.

[0064] like Figure 3 As shown, in one embodiment, S21', in response to the temperature at the water outlet of the heating module being greater than the set water outlet temperature and the temperature rise rate being greater than the speed threshold, the second motor pump is controlled to operate to pump the water output by the heating module back to the water storage module.

[0065] The temperature threshold is not less than the set water outlet temperature. The temperature threshold is set according to the actual situation. The temperature threshold is determined according to the local boiling point and is generally slightly lower than the boiling point. For example, if the water outlet temperature is set to 95°C and the local boiling point is 100°C, the temperature threshold is 98°C.

[0066] Detect the temperature at the water outlet of the heating module. When the temperature is greater than the set water outlet temperature and the temperature continues to rise at a faster rate, indicating that the temperature continues to rise and has not reached stability, the second motor pump is started for protection and the flow rate of the backflow is increased by 50ml / min to 100ml / min every 0.1 seconds until the temperature starts to drop, and then the second motor pump is stopped. The temperature difference threshold is set according to the actual situation, for example, 0.5℃ to 2℃.

[0067] In one embodiment, S21' includes:

[0068] In response to the temperature at the water outlet of the heating module being greater than the set water outlet temperature, and the temperature rise detected at least twice within a preset time period being greater than the temperature rise threshold, the second motor pump is controlled to operate.

[0069] The preset duration is set according to the actual situation, for example, 0.1 seconds; the temperature rise threshold is set according to the actual situation, generally between 0.5°C and 2°C, for example, 1°C.

[0070] When the temperature at the water outlet of the heating module is greater than the set water outlet temperature, and the temperature rise detected at least twice is greater than the temperature rise threshold, for example, with 0.1 seconds as the preset time length, the temperature at the water outlet of the heating module is detected. After the temperature exceeds the set water outlet temperature, the temperature at the water outlet of the heating module is detected twice in a row, and both are in a rising state, and the temperature rise within each preset time length is greater than 1°C, indicating that the temperature continues to rise and has not reached stability, the second motor pump is started for protection, and the water output from the heating module is pumped back to the water storage module, and the heating module is protected from steam spraying, so as to achieve rapid gas accumulation, greatly eliminate the steam spraying phenomenon, and prevent sudden changes in water temperature.

[0071] like Figure 4 As shown, in one embodiment, S21", in response to the temperature at the water outlet of the heating module being greater than the temperature threshold and the temperature rise rate being greater than the speed threshold, the second motor pump is controlled to operate to pump the water output by the heating module back to the water storage module.

[0072] When the temperature at the water outlet of the heating module is greater than the temperature threshold and the temperature rise rate is greater than the speed threshold, the second motor pump is started to operate, and steam spray protection is performed when the temperature of the heating module is too high, thereby achieving rapid gas accumulation, greatly eliminating the steam spray phenomenon, and quickly restoring the temperature of the water outlet of the heating module to the set water outlet temperature, thereby achieving rapid temperature stabilization and preventing sudden changes in water temperature.

[0073] In one embodiment, controlling the operation of the second motor pump includes: adjusting the speed of the second motor pump.

[0074] Among them, the rotation speed of the second motor pump is positively correlated with the temperature rise rate.

[0075] When the temperature rises faster, it means that the speed of the second motor pump needs to be adjusted to a faster speed to pump more water output from the water outlet of the heating module back to the water storage module to achieve a rapid cooling effect.

[0076] In one embodiment, controlling the operation of the second motor pump includes: adjusting the speed of the second motor pump.

[0077] The rotation speed of the second motor pump is positively correlated with the heating power of the heating module.

[0078] When the heating power of the heating module is large, it means that the temperature rise rate is fast at this time, and the speed of the second motor pump needs to be adjusted to a faster speed to pump more water output from the water outlet of the heating module back to the water storage module to achieve a rapid cooling effect.

[0079] In one embodiment, controlling the operation of the second motor pump includes: adjusting the speed of the second motor pump.

[0080] The rotation speed of the second motor pump is positively correlated with the first temperature difference, and the first temperature difference is the difference between the temperature at the water outlet of the heating module and the set water outlet temperature.

[0081] When the first temperature difference is large, it means that the temperature at the water outlet of the heating module is much higher than the set water outlet temperature. It is necessary to adjust the speed of the second motor pump to a faster speed to pump more water output from the water outlet of the heating module back to the water storage module to achieve a rapid cooling effect.

[0082] In one embodiment, controlling the operation of the second motor pump includes: adjusting the power of the second motor pump.

[0083] Among them, the power of the second motor pump is positively correlated with the temperature rise rate.

[0084] When the temperature rises faster, it means that the power of the second motor pump needs to be adjusted to a higher power so as to pump more water output from the water outlet of the heating module back to the water storage module to achieve a rapid cooling effect.

[0085] In one embodiment, controlling the operation of the second motor pump includes: adjusting the power of the second motor pump.

[0086] The power of the second motor pump is positively correlated with the heating power of the heating module.

[0087] When the heating power of the heating module is large, it means that the temperature rise rate is fast at this time, and the power of the second motor pump needs to be adjusted to a larger power to pump more water output from the water outlet of the heating module back to the water storage module to achieve a rapid cooling effect.

[0088] In one embodiment, controlling the operation of the second motor pump includes: adjusting the power of the second motor pump.

[0089] The power of the second motor pump is positively correlated with the first temperature difference, and the first temperature difference is the difference between the temperature at the water outlet of the heating module and the set water outlet temperature.

[0090] When the first temperature difference is large, it means that the temperature at the water outlet of the heating module is much higher than the set water outlet temperature. It is necessary to adjust the power of the second motor pump to a higher power to pump more water output from the water outlet of the heating module back to the water storage module to achieve a rapid cooling effect.

[0091] S22, controlling the first motor pump to operate so that the water storage module discharges water to the heating module.

[0092] After the second motor pump pumps water back to the water storage module, the first motor pump pumps water from the water storage module to the heating module for heating. In one embodiment, after S22, the method further includes: in response to the temperature at the water outlet of the heating module being not less than the set water outlet temperature and not greater than the temperature threshold, controlling the second motor pump to stop running.

[0093] When the temperature at the water outlet of the heating module is not less than the set water outlet temperature and not greater than the temperature threshold, it means that the temperature at the water outlet of the heating module has reached the set water outlet temperature requirement and no steam spraying or the like will occur, and the module is in a safe state. At this time, the second motor pump can be controlled to stop running, thereby stopping the water output from the heating module from being pumped back to the water storage module, reducing energy consumption and achieving energy-saving effects.

[0094] In the process of adjusting the speed of the second motor pump, the first motor pump maintains the original control parameters, that is, maintains the original flow output, thereby preventing sudden changes in flow, avoiding the sudden increase or decrease of hot water causing the temperature to rise faster, and trying to maintain the original flow, thereby improving user experience.

[0095] S23, in response to the temperature at the water outlet of the heating module falling within the range of the set water outlet temperature and the temperature threshold and the temperature rise rate is not greater than the rate threshold, controlling the water dispenser to discharge water.

[0096] When the temperature at the water outlet of the heating module falls within the range of the set water outlet temperature and the temperature threshold and the temperature rise rate is not greater than the rate threshold, it means that the water temperature at the water outlet of the heating module has reached the set water outlet temperature and no steam spraying or other phenomena will occur, and the water outlet of the water dispenser can be controlled to discharge water. Figure 5 As shown, the control method also includes:

[0097] S51. In response to the temperature at the water inlet of the heating module being lower than the set water outlet temperature, a first flow rate of water flowing through the heating module is determined according to a quotient of a first parameter and a second parameter.

[0098] Among them, the first parameter is the product of the heating power of the heating module and the unit time, the second parameter is the product of the specific heat capacity of water and the second temperature difference, and the second temperature difference is the difference between the temperature at the water inlet of the heating module and the set water outlet temperature.

[0099] S52: Determine a first control parameter corresponding to the first flow rate according to the correspondence between the flow rate and the control parameter.

[0100] S53, controlling the first motor pump to operate with a first control parameter so that the water storage module discharges water to the heating module.

[0101] Among them, the first control parameter includes but is not limited to the operating voltage, operating power, operating speed, etc. of the first motor pump.

[0102] In the early stage of heating by the heating module, the water in the heating module is of low temperature and has not reached the set water outlet temperature. When the temperature at the water outlet of the heating module is lower than the set water outlet temperature, it indicates that the water needs to be heated. The first motor pump is controlled to operate with the first control parameters so that water from the water storage module is discharged to the heating module for heating. The control parameters of the first motor pump are determined according to the temperature at the water inlet of the heating module and the flow rate of water flowing through the heating module, thereby effectively improving the accuracy of temperature control and avoiding the problem of excessive flow and rapid drop in water temperature due to excessive power of the first motor pump.

[0103] After setting the outlet water temperature, the first flow rate is calculated by the temperature detected at the water inlet of the heating module. The calculation formula for the first flow rate is W=P*t=C*F*△T, where W is work, P is the heating power of the heating module, t is unit time, that is, the timing time for the flow rate is 1 minute, C is the specific heat capacity of water 4200, F is the flow rate, △T is the second temperature difference, that is, the difference between the temperature at the water inlet of the heating module and the set water outlet temperature. For example, the power of the heating module is 2100W, and the temperature is raised from 25°C to 95°C. The calculation formula for the first flow rate is: F1=P*t / (C*△T)=2100*60 / (4200*70)=0.428L / min, F1 is the first flow rate, and the first flow rate is compared with the pre-set data of the first motor pump. The pre-set data is, for example, the correspondence between the flow rate and the control parameter, and the first control parameter corresponding to the first flow rate is determined, and the first motor pump is started to make the water storage module output the corresponding flow rate, and the heating module is started for heating at the same time.

[0104] In one embodiment, Figure 6 As shown, the control method also includes:

[0105] S61. In response to the temperature at the water outlet of the heating module being lower than the set water outlet temperature, the second motor pump is controlled to operate so as to pump the water outputted by the heating module back to the water storage module.

[0106] S62. In response to the heating power of the heating module being not less than the rated power, determining a second flow rate flowing through the heating module according to the quotient of the third parameter and the fourth parameter; determining a second control parameter corresponding to the second flow rate according to the correspondence between the flow rate and the control parameter; and controlling the first motor pump to operate with the second control parameter.

[0107] Among them, the third parameter is the product of the heating power of the heating module and the unit time, the fourth parameter is the product of the specific heat capacity of water and the third temperature difference, and the third temperature difference is the difference between the temperature at the water inlet of the heating module and the set water outlet temperature.

[0108] S63 . In response to the heating power of the heating module being less than the rated power, adjusting the heating power of the heating module based on a PID algorithm.

[0109] The second motor pump provided in the embodiment of the present disclosure includes multiple starting conditions. In addition to the above-mentioned conditions that the temperature at the water outlet of the heating module is greater than the temperature threshold, and the temperature rise rate is greater than the speed threshold, the starting condition of the second motor pump also includes when the heating module starts to start, the water in the heating module is at a low temperature and has not reached the set water outlet temperature. At this time, the second motor pump is started to pump the water at the water outlet of the heating module back to the water storage module, and then the water is discharged from the water storage module to the heating module for heating until the temperature reaches the set water outlet temperature.

[0110] In step S61, when the heating module starts to heat, the water in the heating module is at a low temperature and does not reach the set water outlet temperature. The temperature at the water outlet of the heating module is detected. For example, the set water outlet temperature is set to 95°C. If the water temperature detected at the water outlet of the heating module is lower than 95°C, the second motor pump is directly started to pump the water from the heating module back to the water storage module. The water outlet temperature is set to 95°C for heating. At this time, the heating flow rate is relatively small. The flow rate of the first motor pump is: F2 = P*t / (C*△T)=2100*60 / (4200*70)=0.428L / min, F2 is the flow rate of the first motor pump, P is the addition The heating power of the thermal module, t is the unit time, that is, the timing time for the flow is 1 minute, C is the specific heat capacity of water 4200, △T is the temperature difference between the set water outlet temperature and the initial temperature of the water. The flow rate after the second motor pump is started is set to be pumped back in the same way as the first motor pump, and once the temperature of the water outlet of the heating module reaches 95°C, the second motor pump stops pumping water, and the hot water of the heating module flows directly to the outlet of the water dispenser.

[0111] In step S62, as the heating module continuously increases its power to reach the rated power, the temperature at the water outlet of the heating module gradually approaches the set water outlet temperature. If the power of the heating module is not less than the rated power, and the temperature at the water outlet of the heating module is still less than the set water outlet temperature, it means that the flow rate of the first motor pump is too large, which makes it easy for the water to cool down during the circulation process. At this time, the output flow rate of the first motor pump needs to be adjusted. The flow rate of the first motor pump that needs to be reduced relative to the initial flow rate is determined according to the heating power and unit flow time of the heating module. For example, the temperature at the water inlet of the heating module when not heated is 25°C, the water outlet temperature is set to 95°C, the current temperature at the water outlet of the heating module is 90°C, and the rated power of the heating module is, for example, 2100W, then F3=P*t / (C*△T)*k=2100*60 / (4200*(95-25))=0.428L / min, △Flow=F3*r=0.428*((95-90) / (95-25))=0.03L / min, F3 is the current flow rate / initial flow rate of the first motor pump; △Flow is the deviation ratio, that is, the flow rate that needs to be reduced relative to the initial flow rate; the above calculation formula represents that the initial flow rate of the first motor pump is 0.428L / min, and the second flow rate after reduction is 0.428-0.03=0.398L / min. P is the heating power of the heating module; t is the unit time, that is, the timing time for the flow rate is 1 minute; C is the specific heat capacity of water 4200; △T is the temperature difference between the set water outlet temperature and the initial temperature of the water; k and r are both proportional coefficients, k is the temperature difference between the set water outlet temperature and the initial temperature of the water, r is the quotient between the temperature difference between the set water outlet temperature and the temperature at the water outlet of the heating module and the temperature difference between the set water outlet temperature and the initial temperature of the water. According to the corresponding relationship between the flow rate and the control parameter, the second control parameter corresponding to the second flow rate is determined, and the first motor pump is controlled to operate with the second control parameter.

[0112] In one embodiment, the heating module can be heated at a rated power, such as 2100W, or the heating module can be started with a PID ((proportional-integral-differential)) control algorithm to gradually increase the power of the heating module until the rated power of the heating module is reached. For example, after the heating module is started for heating, the temperature at the water outlet of the heating module is detected, and the heating module is started for heating according to the PID control algorithm until the rated power of the heating module is reached, such as 2100W. The PID calculation formula is P1=U1(t)=Kp1*e(t)+Ki1*Σe(t)+Kd1*(e(t)-e(t-1)), where e(t) is the current error, e(t)=△T=Tset-NTC2, e(t-1) is the previous error, P1 is the heating power of the heating module, Tset is the set water outlet temperature, NTC2 is the temperature at the water outlet of the heating module, Kp1, Ki1, and Kd1 are all PID system parameters, which can be set empirically according to the situation, and the output data is the heating power of the heating module.

[0113] By detecting the temperature of the water outlet of the heating module and judging whether the second motor pump is turned on, it is possible to effectively output hot water reaching the set water outlet temperature, thereby improving the accuracy of the temperature control of the water dispenser and enhancing the user experience.

[0114] Combine the following Figure 7 , the control method of the water dispenser is further explained:

[0115] After setting the outlet water temperature, the flow rate is calculated by detecting the temperature at the water inlet of the heating module. For example, for a 2100W heating module, the temperature at the outlet of the heating module is raised from 25°C to 95°C, and the flow rate is calculated as: F4 = P*t / (C*△T) = 2100*60 / (4200*70) = 0.428L / min, where P is the heating power of the heating module, t is the unit time, that is, the timing time for the flow rate is 1 minute, C is the specific heat capacity of water 4200, F4 is the initial flow rate of the first motor pump, and △T is the temperature difference between the set outlet water temperature and the initial temperature of the water. The time for water to flow through the heating module is determined according to the calculated flow rate. If the calculated flow rate is F4 = 0.428L / min, the internal space of the heating module is V = 25ml, so the time for water to flow through the heating module is t1 = V*60 / F = 25*60 / 428 = 3.5s.

[0116] The calculated flow rate is compared with the pre-set data of the first motor pump, where the pre-set data is, for example, the correspondence between the flow rate and the control parameters, and the control parameters include but are not limited to the voltage, power, speed, etc. of the motor pump. The first motor pump is started to output the corresponding flow rate, and the heating module is started for heating at the same time. After the heating module is started for heating, the temperature at the water outlet of the heating module is detected, and the heating module is started for heating according to the PID (proportional-integral-differential) control algorithm until the rated power of the heating module is reached, for example, 2100W. The PID calculation formula is P1=U1(t)=Kp1*e(t)+Ki1*Σe(t)+Kd1*(e(t)-e(t-1)), where e(t) is the current error, e(t)=△T=Tset–NTC2, e(t-1) is the previous error, P1 is the heating power of the heating module, Tset is the set water outlet temperature, NTC2 is the temperature at the water outlet of the heating module, Kp1, Ki1, and Kd1 are all PID system parameters, which can be set empirically according to the situation, and the output data is the heating power of the heating module.

[0117] When the heating module starts to heat, the water in the heating module is at a low temperature and has not reached the set water outlet temperature. The temperature at the water outlet of the heating module is detected. For example, if the set water outlet temperature is set to 95°C and the temperature detected at the water outlet of the heating module is lower than 95°C, the second motor pump is directly started to pump the water in the heating module back to the water storage module. For example, the water outlet temperature is set to 95°C for heating. The flow rate of the first motor pump is: F4 = P*t / (C*△T) = 2100*60 / (4200*70) = 0.428L / min. The flow rate after the second motor pump is started is set to be pumped back in the same way as the first motor pump. Once the temperature at the water outlet of the heating module reaches 95°C, the second motor pump stops pumping water. At this time, the hot water in the heating module flows directly to the water outlet of the water dispenser, and the water is discharged at the water outlet of the water dispenser.

[0118] When the temperature at the water outlet of the heating module is lower than the set water outlet temperature, and the power of the heating module is not lower than the rated power, for example, the rated power is 2100W, it means that the flow rate of the first motor pump is too large, and the water may easily become cold during the circulation process. At this time, the output flow rate of the first motor pump needs to be adjusted. The flow rate of the first motor pump that needs to be reduced relative to the initial flow rate is determined according to the heating power of the heating module and the unit flow time. For example, the initial temperature when not heated is 25°C, the water outlet temperature is set to 95°C, and the current temperature is 90°C, then F5=P*t / (C*△T)*k=2100*60 / (4200*(95-25))=0.428L / min, △Flow=F5*r=0.428**((95-90) / (95-25))=0.03L / min, k and r are both proportional coefficients, k sets the temperature difference between the water outlet temperature and the initial temperature of the water, r is the quotient between the temperature difference between the set water outlet temperature and the current temperature and the temperature difference between the set water outlet temperature and the initial temperature of the water, the initial flow rate of the first motor pump is 0.428L / min, and the reduced flow rate is 0.398L / min at this time, according to the corresponding relationship between the flow rate and the control parameter, the control parameter corresponding to the flow rate is determined, and the first motor pump is controlled to operate with the control parameter.

[0119] After the heating module heats the water, since the water outlet temperature is set to be relatively high, for example, 95°C, the thermal inertia of the heating module and the deviation of the motor pump flow rate may easily cause the water outlet temperature of the heating module to overheat. At this time, steam spraying is very likely to occur, and the steam spraying cannot be stopped all at once. At this time, the second motor pump is used to pump water or air to prevent steam spraying and temperature instability.

[0120] According to the normal PID control effect, if the outlet water temperature is set to 95°C, the outlet water temperature generally fluctuates around 95°C. Once the temperature exceeds the maximum set temperature, for example, 98°C, and continues to rise, and the temperature rise rate is relatively fast, for example, with a detection cycle of 0.1 second, the temperature at the outlet of the heating module is detected. When the temperature exceeds the set outlet water temperature, the temperature is detected twice in a row and is rising, and the rising temperature in each cycle is greater than the temperature rise threshold, indicating that the temperature continues to rise and is not stable, the second motor pump is started for protection, and the backflow flow rate is increased by 50ml / min to 100ml / min per 0.1 second. The increased backflow flow rate is calculated according to the heating power, flow rate, etc. For example, the initial temperature of the water in the water storage module when it is not heated The flow rate is 25℃, the outlet water temperature is set to 95℃, the maximum protection temperature is 98℃, and the current temperature is 99℃, then F6=P*t / (C*△T)*k=2100*60 / (4200*(95-25))=0.428L / min, △Flow=F6*r=0.428*((99-95) / (95-25))=0.024L / min, t is the flow timing time of 1 minute, C is the specific heat capacity of water 4200, △T is the temperature difference between the set outlet water temperature and the initial temperature of water, k and r are both proportional coefficients, k is the temperature difference between the set outlet water temperature and the initial temperature of water, and r is the quotient between the temperature difference between the current temperature and the set outlet water temperature and the temperature difference between the set outlet water temperature and the initial temperature of water. When the temperature starts to drop, stop the second motor pump. Among them, the temperature rise threshold is set according to the actual situation, for example, 0.5℃~2℃.

[0121] By detecting the temperature at the water outlet of the heating module and judging whether to start the second motor pump, the outlet water temperature of the hot water can be effectively controlled. When the outlet water temperature of the heating module is too high, steam spray protection is performed to quickly restore the outlet water temperature and prevent sudden changes in water temperature.

[0122] like Figure 8As shown, the embodiment of the present disclosure also provides a water dispenser, including a water storage module 11, a heating module 13, a first motor pump 12, a first temperature detection module 87, a second temperature detection module 86 and a controller, the controller is used to implement the above control method, the water storage module 11 is used to store water, the heating module 13 is used to heat the water output by the water storage module 11, the first temperature detection module 87 is arranged at the water inlet of the heating module 13, and is used to detect the temperature at the water inlet of the heating module 13, the second temperature detection module 86 is located at the water outlet of the heating module 13, and is used to detect the temperature at the water outlet of the heating module 13, one end of the first motor pump 12 is connected to the water outlet of the water storage module 11, and the other end is connected to the water inlet of the heating module 13, the first motor pump 12 is used to pump water from the water storage module 11 to the heating module 13, one end of the second motor pump 14 is connected to the water outlet of the heating module 13, and the other end is connected to the water inlet of the water storage module 11, the second motor pump 14 is used to pump the water output by the heating module 13 back to the water storage module 11. The first temperature detection module 87 may be a temperature sensor, and the second temperature detection module 86 may be a temperature sensor.

[0123] When the water temperature output by the heating module does not meet the conditions after heating, the second motor pump draws the water output by the heating module back to the heat storage module, and circulates until the water temperature output by the heating module meets the conditions. Through the cooperation of the dual motor pumps, the low-temperature water reflux of the pipeline is achieved, avoiding the problem of low water temperature in the first cup of water in the water dispenser.

[0124] In one embodiment, a one-way valve is included between the heating module and the water outlet of the water dispenser.

[0125] The one-way valve prevents normal temperature water from entering the heating module, and also prevents air from the water outlet of the water dispenser from entering the heating module. Due to the existence of the one-way valve, the air and normal temperature water at the water outlet of the water dispenser cannot flow back. Therefore, when the second motor pump is started, the water at the water outlet of the heating module is pumped into the water storage module by the second motor pump, so that the water output after heating by the heating module is pumped back to the water storage module. When the second motor pump stops pumping water, the hot water output from the heating module is directly discharged to the water outlet of the water dispenser through the one-way valve.

[0126] In one embodiment, the water dispenser includes a composite filter element 82 and a nanofiltration membrane filter element 83, which are arranged between the water storage module 11 and the water inlet of the water dispenser. Through the boosting of the booster pump 84 and the filtration of the filter element, the filtered water is sterilized by an ultraviolet sterilizer to form purified water.

[0127] Combine the following Figure 8 Further explanation of water dispenser:

[0128] The water dispenser takes in water from the water inlet through the water inlet valve 81, filters the water through the composite filter element 82 and the nanofiltration membrane filter element 83, and the composite filter element 82 and the nanofiltration membrane filter element 83 are used for water transportation and circulation through the booster pump 84. The filtered water is sterilized by the ultraviolet sterilizer 85 to form purified water, which is transported to the water storage module 11 for storage. When water is needed, the water storage module 11 pumps water to the heating module 13 through the first motor pump 12, the first temperature detection module 87 detects the temperature at the water inlet of the heating module 13, and the second temperature detection module 86 detects the temperature at the water outlet of the heating module 13. If the temperature at the water outlet of the heating module 13 does not meet the set water outlet temperature, the second motor pump 14 is started to pump the water in the heating module 13 back to the water storage module 11, and the first motor pump again pumps the water in the heat storage module to the heating module for heating, and the cycle is repeated until the water temperature output by the heating module meets the conditions, and the heating module transports the water to the tap of the water dispenser for water outlet.

[0129] Fig. 9 This is a structural schematic diagram of an electronic device shown in an exemplary embodiment of the present disclosure, the electronic device includes a memory, a processor, and a computer program stored in the memory and used to run on the processor, and the processor implements the control method described in any of the above embodiments when executing the computer program. Fig. 9 The electronic device 90 shown is only an example and should not bring any limitation to the functions and scope of use of the embodiments of the present disclosure.

[0130] like Fig. 9 As shown, the electronic device 90 may be in the form of a general-purpose computing device, for example, it may be a server device. The components of the electronic device 90 may include, but are not limited to: at least one processor 91, at least one memory 92, and a bus 93 connecting different system components (including the memory 92 and the processor 91).

[0131] The bus 93 includes a data bus, an address bus, and a control bus.

[0132] The memory 92 may include a volatile memory, such as a random access memory (RAM) 921 and / or a cache memory 922 , and may further include a read-only memory (ROM) 923 .

[0133] The memory 92 may also include a program tool 925 (or utility) having a set (at least one) of program modules 924, such program modules 924 including but not limited to: an operating system, one or more application programs, other program modules and program data, each of which or some combination may include an implementation of a network environment.

[0134] The processor 91 executes various functional applications and data processing by running the computer program stored in the memory 92, such as the control method provided in any of the above embodiments.

[0135] The electronic device 90 may also communicate with one or more external devices 94 (e.g., keyboards, pointing devices, etc.). Such communication may be performed via an input / output (I / O) interface 95. Furthermore, the electronic device 90 may also communicate with one or more networks (e.g., local area networks (LANs), wide area networks (WANs), and / or public networks, such as the Internet) via a network adapter 96. As shown, the network adapter 96 communicates with other modules of the electronic device 90 via a bus 93. It should be understood that, although not shown in the figure, other hardware and / or software modules may be used in conjunction with the electronic device 90, including but not limited to: microcode, device drivers, redundant processors, external disk drive arrays, RAID (disk array) systems, tape drives, and data backup storage systems, etc.

[0136] It should be noted that although several units / modules or sub-units / modules of the electronic device are mentioned in the above detailed description, this division is merely exemplary and not mandatory. In fact, according to the embodiments of the present disclosure, the features and functions of two or more units / modules described above can be embodied in one unit / module. Conversely, the features and functions of one unit / module described above can be further divided into multiple units / modules to be embodied.

[0137] The embodiment of the present disclosure further provides a computer-readable storage medium having a computer program stored thereon, and when the program is executed by a processor, the control method provided by any of the above embodiments is implemented.

[0138] The readable storage medium may include but is not limited to: a portable disk, a hard disk, a random access memory, a read-only memory, an erasable programmable read-only memory, an optical storage device, a magnetic storage device or any suitable combination of the above.

[0139] The embodiment of the present disclosure further provides a computer program product, including a computer program, wherein when the computer program is executed by a processor, any of the control methods described above is implemented.

[0140] Among them, the program code for executing the computer program product of the present disclosure can be written in any combination of one or more programming languages, and the program code can be executed completely on the user device, partially on the user device, as an independent software package, partially on the user device and partially on a remote device, or completely on the remote device.

[0141] Although the specific embodiments of the present disclosure are described above, those skilled in the art should understand that this is only an example, and the protection scope of the present disclosure is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present disclosure, but these changes and modifications all fall within the protection scope of the present disclosure.

Claims

1. A method for controlling a water dispenser, characterized in that: The water dispenser includes a water storage module, a heating module, a first motor pump, and a second motor pump, wherein two ends of the first motor pump are respectively connected to the water outlet of the water storage module and the water inlet of the heating module, and two ends of the second motor pump are respectively connected to the water outlet of the heating module and the water inlet of the water storage module; The control method comprises: In response to the temperature at the water outlet of the heating module being greater than a temperature threshold, and / or in response to the temperature at the water outlet of the heating module being greater than a set water outlet temperature and the temperature rise rate being greater than a speed threshold, controlling the second motor pump to operate so as to pump the water output by the heating module back to the water storage module; the temperature threshold is not less than the set water outlet temperature; Controlling the first motor pump to operate so that the water storage module discharges water to the heating module; In response to the temperature at the water outlet of the heating module falling within the range of the set water outlet temperature and the temperature threshold and the temperature rise rate is not greater than the rate threshold, the water dispenser is controlled to discharge water.

2. The control method according to claim 1, characterized in that: In response to the temperature at the water outlet of the heating module being greater than the set water outlet temperature and the temperature rise rate being greater than the speed threshold, controlling the second motor pump to operate includes: In response to the temperature at the water outlet of the heating module being greater than the set water outlet temperature, and the temperature rise detected at least twice within a preset time period being greater than the temperature rise threshold, the second motor pump is controlled to operate.

3. The control method according to claim 2, characterized in that: Controlling the second motor pump to operate, comprising: Adjusting the speed of the second motor pump; wherein the speed of the second motor pump is positively correlated with the temperature rise rate, and / or the speed of the second motor pump is positively correlated with the heating power of the heating module, and / or the speed of the second electrode is positively correlated with the first temperature difference; the first temperature difference is the difference between the temperature at the water outlet of the heating module and the set water outlet temperature; And / or, adjust the power of the second motor pump; the power of the second motor pump is positively correlated with the temperature rise rate, and / or the power of the second motor pump is positively correlated with the heating power of the heating module, and / or the power of the second motor pump is positively correlated with the first temperature difference.

4. The control method according to any one of claims 1 to 3, characterized in that: After the controlling the first motor pump to operate so that the water storage module discharges water to the heating module, the method further includes: In response to the temperature at the water outlet of the heating module being not less than the set water outlet temperature and not greater than the temperature threshold, the second motor pump is controlled to stop running.

5. The control method according to claim 1, characterized in that: The control method further comprises: In response to the temperature at the water inlet of the heating module being lower than the set water outlet temperature, determining a first flow rate of water flowing through the heating module according to the quotient of a first parameter and a second parameter; the first parameter being the product of the heating power of the heating module and the unit time, the second parameter being the product of the specific heat capacity of water and a second temperature difference, the second temperature difference being the difference between the temperature at the water inlet of the heating module and the set water outlet temperature; Determining a first control parameter corresponding to the first flow rate according to a correspondence between the flow rate and the control parameter; The first motor pump is controlled to operate with a first control parameter so that the water storage module discharges water to the heating module.

6. The control method according to claim 1, characterized in that: The control method further comprises: In response to the temperature at the water outlet of the heating module being lower than the set water outlet temperature, controlling the second motor pump to operate so as to pump the water outputted by the heating module back to the water storage module; In response to the heating power of the heating module being not less than the rated power, a second flow rate flowing through the heating module is determined according to the quotient of the third parameter and the fourth parameter; a second control parameter corresponding to the second flow rate is determined according to the corresponding relationship between the flow rate and the control parameter; and the first motor pump is controlled to operate with the second control parameter; the third parameter is the product of the heating power of the heating module and the unit time, the fourth parameter is the product of the specific heat capacity of water and the third temperature difference, and the third temperature difference is the difference between the temperature at the water inlet of the heating module and the set water outlet temperature; In response to the heating power of the heating module being less than the rated power, the heating power of the heating module is adjusted based on a PID algorithm.

7. A water dispenser, characterized in that: The water dispenser includes a water storage module, a heating module, a first motor pump, a first temperature detection module, a second temperature detection module and a controller; A water storage module, used for storing water; A heating module, used for heating the water output by the water storage module; A first motor pump, one end of which is connected to the water outlet of the water storage module, and the other end of which is connected to the water inlet of the heating module; A second motor pump, one end of which is connected to the water outlet of the heating module, and the other end of which is connected to the water inlet of the water storage module; The controller is electrically connected to the first motor pump, the second motor pump, the first temperature detection module and the second temperature detection module respectively; the controller is used to implement the control method described in any one of claims 1-6.

8. The water dispenser according to claim 7, characterized in that: A one-way valve is provided between the heating module and the water outlet of the water dispenser; and / or, The water dispenser comprises a composite filter element and a nanofiltration membrane filter element, and the composite filter element and the nanofiltration membrane filter element are arranged between the water storage module and the water inlet of the water dispenser.

9. An electronic device comprising a memory, a processor, and a computer program stored in the memory and used to run on the processor, characterized in that: When the processor executes the computer program, the control method according to any one of claims 1 to 6 is implemented.

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

11. A computer program product, comprising a computer program, characterized in that When the computer program is executed by a processor, the control method according to any one of claims 1 to 6 is implemented.

Images