Water dispenser, temperature control method, device and storage medium thereof

Abstract

The application discloses a water dispenser, a temperature control method and device thereof and a storage medium, wherein the water dispenser comprises a cold water pump and a hot water pump, and the method comprises the following steps: obtaining water inlet parameters and a target water temperature of the water dispenser; obtaining a compensation temperature and a compensation flow of mixed outlet water according to the water inlet parameters of the water dispenser; obtaining a target cold water outlet flow and an actual cold water outlet flow of the water dispenser according to the water inlet parameters, the target water temperature, the compensation temperature and the compensation flow; and adjusting a control parameter of the cold water pump according to the target cold water outlet flow and the actual cold water outlet flow, so that the water dispenser can output water at a constant temperature. Therefore, the control parameter of the cold water pump is continuously corrected according to the target cold water outlet flow and the actual cold water outlet flow, so as to reduce the difference between the target cold water outlet flow and the actual cold water outlet flow, and the actual outlet water temperature of the water dispenser continuously approaches the target water temperature, the purpose of precise temperature control is achieved, and the water dispenser can output water at a constant temperature.

Description

Technical Field

[0001] This invention relates to the field of water dispenser technology, and in particular to a temperature control method for a water dispenser, a computer-readable storage medium, a temperature control device for a water dispenser, and a water dispenser. Background Technology

[0002] In actual use of water purifiers, due to the instability of inlet water temperature and different hot water temperature pipeline losses when the water purifier is used in different seasons (e.g., winter and summer), the water temperature of the purifier when the user uses the warm water setting may differ significantly from the set value. On the one hand, if the warm water temperature is lower than the set value, it will affect the user's water experience. On the other hand, if the warm water temperature is higher than the set value, it may easily cause safety accidents such as scalding. Summary of the Invention

[0003] This invention aims to at least partially solve one of the technical problems in related technologies. Therefore, the first objective of this invention is to provide a temperature control method for a water dispenser, which enables the actual water temperature dispensed by the dispenser to continuously approach the target water temperature, achieving precise temperature control and ensuring constant temperature water dispensing from the dispenser.

[0004] A second objective of this invention is to provide a computer-readable storage medium.

[0005] The third objective of this invention is to provide a temperature control device for a water dispenser.

[0006] The fourth objective of this invention is to provide a water dispenser.

[0007] To achieve the above objectives, a first aspect of the present invention provides a temperature control method for a water dispenser, wherein the water dispenser includes a cold water pump and a hot water pump, and the method includes: acquiring the water inlet parameters and target water temperature of the water dispenser; acquiring a compensation temperature and compensation flow rate of the mixed water based on the water inlet parameters; acquiring a target cold water outlet flow rate and an actual cold water outlet flow rate of the water dispenser based on the water inlet parameters, the target water temperature, the compensation temperature, and the compensation flow rate; and adjusting the control parameters of the cold water pump based on the target cold water outlet flow rate and the actual cold water outlet flow rate to enable the water dispenser to dispense water at a constant temperature.

[0008] According to the water dispenser temperature control method of the present invention, the water inlet parameters and target water temperature of the water dispenser are obtained, and the compensation temperature and compensation flow rate of the mixed water are obtained based on the water inlet parameters. Then, based on the water inlet parameters, target water temperature, compensation temperature, and compensation flow rate, the target cold water outlet flow rate and actual cold water outlet flow rate of the water dispenser are obtained. Finally, based on the target cold water outlet flow rate and actual cold water outlet flow rate, the control parameters of the cold water pump are adjusted to ensure constant temperature water output from the water dispenser. Thus, by continuously correcting the control parameters of the cold water pump based on the target cold water outlet flow rate and actual cold water outlet flow rate, the difference between the target cold water outlet flow rate and the actual cold water outlet flow rate is reduced, thereby making the actual water temperature of the water dispenser continuously approach the target water temperature, achieving precise temperature control and ensuring constant temperature water output from the water dispenser.

[0009] In addition, the temperature control method for a water dispenser according to the above embodiments of the present invention may also have the following additional technical features:

[0010] According to one embodiment of the present invention, the inlet water parameters include cold water inlet pressure, cold water inlet temperature, hot water outlet flow rate, and hot water outlet temperature.

[0011] According to one embodiment of the present invention, obtaining the target cold water flow rate of the water dispenser includes: obtaining a compensation temperature for the mixed water based on the cold water inlet temperature; and obtaining the target cold water flow rate based on the cold water inlet temperature, the hot water flow rate, the hot water flow rate, and the compensation temperature.

[0012] According to one embodiment of the present invention, obtaining the actual cold water output flow rate of the water dispenser includes: obtaining the compensation flow rate of the mixed output water based on the cold water inlet temperature; and obtaining the actual cold water output flow rate based on the cold water inlet pressure and the compensation flow rate.

[0013] According to one embodiment of the present invention, adjusting the control parameters of the chilled water pump includes: obtaining the difference between the target chilled water outlet flow rate and the actual chilled water outlet flow rate; and performing PID adjustment on the control parameters of the chilled water pump based on the difference.

[0014] According to one embodiment of the present invention, the method further includes: obtaining a minimum adjustable flow rate threshold; if the difference is less than or equal to the minimum adjustable flow rate threshold, then controlling the current control parameters of the chilled water pump to remain unchanged.

[0015] According to an embodiment of the present invention, the method further includes: obtaining the minimum duty cycle and the maximum duty cycle of the chilled water pump; if the target duty cycle is less than the minimum duty cycle, or the target duty cycle is greater than the maximum duty cycle, then controlling the current control parameters of the chilled water pump to remain unchanged.

[0016] To achieve the above objectives, a computer-readable storage medium is provided in a second aspect embodiment of the present invention, on which a temperature control program for a water dispenser is stored. When the temperature control program for the water dispenser is executed by a processor, it implements the temperature control method for the water dispenser described in the embodiments of the present invention.

[0017] According to embodiments of the present invention, a computer-readable storage medium, by executing a temperature control program for a water dispenser stored thereon, enables the actual water temperature of the water dispenser to continuously approach the target water temperature, thereby achieving precise temperature control and ensuring constant temperature water output from the water dispenser.

[0018] To achieve the above objectives, a third aspect of the present invention provides a temperature control device for a water dispenser, wherein the water dispenser includes a cold water pump and a hot water pump, and the device includes: a first acquisition module for acquiring the water inlet parameters and target water temperature of the water dispenser; a second acquisition module for acquiring the compensation temperature and compensation flow rate of the mixed water according to the water inlet parameters of the water dispenser; a third acquisition module for acquiring the target cold water outlet flow rate and actual cold water outlet flow rate of the water dispenser according to the water inlet parameters, the target water temperature, the compensation temperature, and the compensation flow rate; and a control module for adjusting the control parameters of the cold water pump according to the target cold water outlet flow rate and the actual cold water outlet flow rate, so that the water dispenser dispenses water at a constant temperature.

[0019] According to an embodiment of the present invention, the temperature control device for a water dispenser acquires the water inlet parameters and target water temperature of the water dispenser through a first acquisition module, and acquires the compensation temperature and compensation flow rate of the mixed water based on the water inlet parameters through a second acquisition module. Then, a third acquisition module acquires the target cold water outlet flow rate and the actual cold water outlet flow rate of the water dispenser based on the water inlet parameters, target water temperature, compensation temperature, and compensation flow rate. Finally, a control module adjusts the control parameters of the cold water pump based on the target cold water outlet flow rate and the actual cold water outlet flow rate to ensure constant temperature water output from the water dispenser. Thus, by continuously correcting the control parameters of the cold water pump based on the target cold water outlet flow rate and the actual cold water outlet flow rate, the difference between the target cold water outlet flow rate and the actual cold water outlet flow rate is reduced, thereby ensuring that the actual water temperature of the water dispenser continuously approaches the target water temperature, achieving precise temperature control and ensuring constant temperature water output from the water dispenser.

[0020] To achieve the above objectives, the water dispenser proposed in the fourth aspect of the present invention includes the temperature control device of the water dispenser described in the above embodiment of the present invention.

[0021] According to the embodiments of the present invention, by employing the aforementioned temperature control device, the actual water temperature of the water dispenser can continuously approach the target water temperature, thereby achieving precise temperature control and ensuring constant temperature water output.

[0022] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the water flow path of a water dispenser according to an embodiment of the present invention;

[0024] Figure 2 This is a schematic flowchart of a temperature control method for a water dispenser according to an embodiment of the present invention;

[0025] Figure 3 This is a schematic flowchart of a temperature control method for a water dispenser according to an embodiment of the present invention;

[0026] Figure 4 This is a schematic flowchart of a temperature control method for a water dispenser according to an embodiment of the present invention;

[0027] Figure 5 This is a schematic flowchart of a temperature control method for a water dispenser according to an embodiment of the present invention;

[0028] Figure 6 This is a schematic flowchart of a temperature control method for a water dispenser according to an embodiment of the present invention;

[0029] Figure 7 This is a schematic flowchart of a temperature control method for a water dispenser according to an embodiment of the present invention;

[0030] Figure 8 This is a block diagram of a temperature control device for a water dispenser according to an embodiment of the present invention;

[0031] Figure 9 This is a block diagram of a water dispenser according to an embodiment of the present invention. Detailed Implementation

[0032] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0033] The following description, with reference to the accompanying drawings, outlines an embodiment of the present invention, including a temperature control method for a water dispenser, a computer-readable storage medium, a temperature control device for a water dispenser, and a water dispenser.

[0034] Figure 1 This is a schematic diagram of the water flow path of a water dispenser according to an embodiment of the present invention.

[0035] Specifically, a water dispenser includes a cold water pump and a hot water pump; more specifically, such as... Figure 1 As shown, the cold water pump is used to pump cold water, and the hot water pump is used to pump hot water. The cold water and hot water are mixed and then dispensed at a constant temperature through the tap.

[0036] Figure 2 This is a schematic flowchart of a temperature control method for a water dispenser according to an embodiment of the present invention.

[0037] Specifically, in some embodiments of the present invention, such as Figure 2 As shown, the temperature control method for the water dispenser includes:

[0038] S101, obtain the water inlet parameters and target water temperature of the water dispenser.

[0039] Specifically, in this embodiment of the present invention, after the water dispenser has stabilized its water output, the water inlet parameters of the water dispenser can be obtained through pressure sensors and temperature sensors, and the target water temperature set by the user can be obtained through the control panel of the water dispenser via communication or cloud means. The target water temperature can represent the warm water temperature when the user fills the container with water or washes the water directly.

[0040] Furthermore, in some embodiments of the present invention, the inlet water parameters include cold water inlet pressure, cold water inlet temperature, hot water outlet flow rate, and hot water outlet temperature.

[0041] Specifically, in this embodiment of the present invention, a water pressure sensor can be installed at the inlet of the cold water pump to obtain the cold water inlet pressure, and a cold water temperature sensor can be installed at any position between the outlet of the cold water pump and the faucet to obtain the cold water inlet temperature. A hot water flow meter can be installed at any position between the outlet of the hot water pump and the faucet to obtain the hot water outlet flow rate, and a hot water temperature sensor can be installed at any position between the outlet of the hot water pump and the faucet to obtain the hot water outlet temperature.

[0042] S102 obtains the compensation temperature and compensation flow rate of the mixed water based on the water inlet parameters of the water dispenser.

[0043] It is understood that in this embodiment of the present invention, since there is a pipe temperature loss when cold water and hot water are mixed and reach the faucet through the pipe, the pipe temperature loss can be compensated by setting a compensation temperature. Furthermore, since the pumping characteristics of the water pump are affected under low temperature conditions, the outlet flow rate corresponding to different inlet water temperatures can also be compensated by setting a compensation flow rate.

[0044] S103 obtains the target cold water output flow rate and the actual cold water output flow rate of the water dispenser based on the inlet water parameters, target water temperature, compensation temperature and compensation flow rate.

[0045] It is understood that, in this embodiment of the present invention, the target cold water outflow rate can characterize the theoretical cold water flow rate provided by the cold water pump, and the actual cold water outflow rate can characterize the actual cold water flow rate provided by the cold water pump.

[0046] S104 adjusts the control parameters of the cold water pump according to the target cold water flow rate and the actual cold water flow rate to ensure that the water dispenser dispenses water at a constant temperature.

[0047] Specifically, in this embodiment of the present invention, the current water flow rate of the cold water pump can be continuously corrected by adjusting the control parameters of the cold water pump. Thus, by adjusting the cold water flow rate provided by the cold water pump, the actual water temperature of the water dispenser can be made to continuously approach the target water temperature, so as to achieve precise temperature control and ultimately achieve constant temperature water output from the water dispenser.

[0048] Furthermore, in some embodiments of the present invention, such as Figure 3 As shown, obtaining the target cold water flow rate of the water dispenser includes:

[0049] S201, obtain the compensation temperature of the mixed outlet water based on the cold water inlet temperature.

[0050] Specifically, in this embodiment of the invention, the compensated temperature of the mixed effluent can be obtained using the following formula:

[0051]

[0052] in, To compensate for temperature, T 冷 This refers to the cold water inlet temperature.

[0053] Optionally, in the above embodiments of the present invention, the relationship between the cold water inlet temperature and the compensation temperature of the mixed outlet water is as follows:

[0054] y = -(3*10 -4 )*x 3 +(19*10 -3 )*x 2 -(57*10 -2 x + 7.98

[0055] Where y is the compensation temperature of the mixed effluent and x is the inlet temperature of the cold water.

[0056] S202: Obtain the target cold water outlet flow rate based on the cold water inlet temperature, hot water outlet flow rate, hot water outlet temperature, and compensation temperature.

[0057] Specifically, in this embodiment of the present invention, the target cold water flow rate of the water dispenser can be obtained in the following manner:

[0058] Q=c*m*Δt (2)

[0059] Where Q represents heat, c represents the specific heat capacity of the substance, m represents the mass of the substance, and Δt represents the change in temperature of the object.

[0060] Therefore, during the mixing process of cold and hot water, when the cold water absorbs heat and the hot water releases heat, according to the law of conservation of energy:

[0061] c*m 冷 *(T 目标 -T 冷 )= c*m 热 *(T 热 -T 目标 (3)

[0062] Therefore, during the stable water discharge process, we have m = q * t, where m represents the mass of the discharged water, q represents the flow velocity of the discharged water, and t represents the discharge time. Thus, equation (2) can be converted to... Relational functions:

[0063]

[0064] in, For the target cold water outlet flow rate, T 热 T represents the hot water outlet temperature. 冷 q represents the inlet temperature of the cold water. 热 T represents the hot water flow rate. 目标 The target water temperature.

[0065]

[0066] in, To compensate for temperature.

[0067] Furthermore, in some embodiments of the present invention, such as Figure 4 As shown, obtaining the actual cold water flow rate of the water dispenser includes:

[0068] S301, obtains the compensation flow rate of the mixed outlet water based on the cold water inlet temperature.

[0069] Specifically, in this embodiment of the invention, the compensation flow rate of the mixed effluent can be obtained by the following formula:

[0070]

[0071] in, To compensate for the flow rate, T_cold is the inlet temperature of the cold water.

[0072] Optionally, in the above embodiments of the present invention, the relationship between the cold water inlet temperature and the compensation temperature of the mixed outlet water is as follows:

[0073] y = -(3*10 -5 )*x 3 +(2*10 -3 )*x 2 -(58*10 -3 )*x+1.41,

[0074] Where y is the compensation flow rate of the mixed effluent, and x is the inlet temperature of the cold water.

[0075] S302, based on the cold water inlet pressure and compensation flow rate, obtains the actual cold water outlet flow rate.

[0076] Specifically, in this embodiment of the present invention, the actual cold water flow rate of the water dispenser can be obtained in the following way:

[0077] Since different cold water inlet pressures will cause variations in the actual cold water outlet flow rate, thus affecting the stability and accuracy of the actual outlet water temperature of the water dispenser, the functional relationship between the cold water inlet pressure and the actual cold water outlet flow rate can be fitted using laboratory simulation data, as shown below:

[0078] q ′ 冷 =A*F 3 +B*F 2 +C*F+D (7)

[0079] Where, q ′ 冷 The cold water outlet flow rate corresponds to the current cold water inlet pressure, where F is the cold water inlet pressure and A, B, C, and D are fitting coefficients.

[0080]

[0081] in, This represents the actual cold water outlet flow rate. To compensate for the data usage.

[0082] Furthermore, in some embodiments of the present invention, such as Figure 5 As shown, adjusting the control parameters of the chilled water pump includes:

[0083] S401, obtain the difference between the target cold water outlet flow rate and the actual cold water outlet flow rate.

[0084] It is understood that, in this embodiment of the present invention, the difference between the target cold water outflow rate and the actual cold water outflow rate can characterize the difference between the target water temperature and the actual outflow temperature.

[0085] S402, performs PID adjustment on the control parameters of the chilled water pump based on the difference.

[0086] Specifically, in this embodiment of the invention, the target cold water outlet flow rate can be used as the control target, and the difference between the target cold water outlet flow rate and the actual cold water outlet flow rate can be controlled using PID control.

[0087]

[0088] Therefore, by adjusting the control parameters of the chilled water pump to regulate the chilled water outlet flow rate, the control parameters of the chilled water pump are used as the control variable for PID control, i.e.:

[0089]

[0090] Where D is the control parameter of the chilled water pump, K p For preset proportional gain, T t For preset integration time, T D This is the preset differential time.

[0091] Furthermore, in some embodiments of the present invention, such as Figure 6 As shown, the method also includes:

[0092] S501, obtain the minimum regulating flow threshold.

[0093] It is understood that, in this embodiment of the present invention, a minimum adjustable flow rate threshold can also be preset, thereby avoiding frequent adjustments to the cold water pump and improving the reliability and stability of the water dispenser's output.

[0094] S502, if the difference is less than or equal to the minimum adjustable flow threshold, the current control parameters of the chilled water pump remain unchanged.

[0095] Specifically, in this embodiment of the present invention, the difference Δq between the obtained target cold water outlet flow rate and the actual cold water outlet flow rate can be used as a minimum regulating flow rate threshold. If a comparison is made, It can be assumed that the current water temperature from the water dispenser differs significantly from the target water temperature. In this case, the control parameters of the cold water pump can be adjusted using PID control based on the temperature difference. Conversely, if... If the current water temperature of the water dispenser is close to the target water temperature, then the current control parameters of the cold water pump can be kept constant, thus avoiding frequent adjustments to the water dispenser.

[0096] Furthermore, in some embodiments of the present invention, such as Figure 7 As shown, the method also includes:

[0097] S601, obtain the minimum and maximum duty cycles of the chilled water pump.

[0098] It is understood that, in this embodiment of the present invention, the minimum duty cycle and maximum duty cycle of the chilled water pump can be preset to avoid overheating or slow response of the chilled water pump and improve the stability of the chilled water pump.

[0099] S602, if the target duty cycle is less than the minimum duty cycle, or the target duty cycle is greater than the maximum duty cycle, then the current control parameters of the chilled water pump remain unchanged.

[0100] Specifically, in this embodiment of the invention, the target duty cycle D can be compared with the minimum duty cycle D of the chilled water pump. min and maximum duty cycle D max Compare, if D < D min Or, D > D max If the current target duty cycle D exceeds the allowable adjustment range of the chilled water pump, then the current control parameters of the chilled water pump can be kept constant to ensure the reliability and stability of the chilled water pump. Conversely, if D... min <D<D max If so, it can be considered that the current target duty cycle D is within the allowable adjustment range of the chilled water pump. At this time, the chilled water pump can be controlled to operate at the current target duty cycle D to adjust the chilled water outlet flow rate, thereby making the difference between the target chilled water outlet flow rate and the actual chilled water outlet flow rate tend to 0.

[0101] The water temperature adjustment process of the water dispenser temperature control method of this invention will be described below with reference to a specific embodiment of the invention:

[0102] For example, when a user selects a warm water setting, a constant temperature control strategy is executed. The execution time interval of this strategy is Δg, and the constant temperature control strategy includes the following steps:

[0103] Step 1: After the water flow from the water dispenser stabilizes, the target cold water flow rate can be obtained based on the aforementioned formula (5). The actual cold water outflow rate is obtained based on the aforementioned formula (8). Meanwhile, the difference Δq between the target cold water outflow rate and the actual cold water outflow rate is obtained based on the aforementioned formula (9).

[0104] Step 2: Compare the obtained difference Δq with the minimum regulating flow threshold. If a comparison is made, If it succeeds, proceed to the next step; otherwise, exit the execution of the constant temperature control strategy.

[0105] Step 3: Substitute the difference Δq into the aforementioned formula (10) to obtain the target duty cycle D of the cold water pump.

[0106] Step 4: Compare the obtained target duty cycle D with the minimum duty cycle D of the chilled water pump. minand maximum duty cycle D max Compare, if D min ≤D≤D max If yes, proceed to the next step; otherwise, exit the execution of the constant temperature control strategy.

[0107] Step 5: Drive the chilled water pump with the target duty cycle D to adjust the chilled water outlet flow rate of the chilled water pump.

[0108] Step 6: Wait for the execution time interval Δg, then execute Step 1 again.

[0109] It should be noted that in the above embodiments of the present invention, the constant temperature control strategy will cyclically execute steps one to six, and continuously adjust the target duty cycle D of the cold water pump according to the difference Δq between the target cold water outflow rate and the actual cold water outflow rate, so as to adjust the current cold water pump outflow rate and make Δq tend to 0.

[0110] Based on the temperature control method for a water dispenser in the foregoing embodiments of the present invention, the present invention also proposes a computer-readable storage medium storing a temperature control program for a water dispenser thereon. When the temperature control program for the water dispenser is executed by a processor, it implements the temperature control method for a water dispenser in the foregoing embodiments of the present invention.

[0111] It should be understood that the specific implementation of the computer-readable storage medium in the embodiments of the present invention can be found in the specific implementation of the temperature control method for the water dispenser in the foregoing embodiments of the present invention, and will not be repeated here to reduce redundancy.

[0112] In summary, according to the computer-readable storage medium of the present invention, by executing the temperature control program of the water dispenser stored thereon, the actual water temperature of the water dispenser can be made to continuously approach the target water temperature, thereby achieving the purpose of precise temperature control and ensuring that the water dispenser dispenses water at a constant temperature.

[0113] Figure 8 This is a block diagram of a temperature control device for a water dispenser according to an embodiment of the present invention.

[0114] Specifically, in some embodiments of the present invention, such as Figure 8 As shown, the temperature control device 100 of the water dispenser includes: a first acquisition module 10, a second acquisition module 20, a third acquisition module 30, and a control module 40.

[0115] The first acquisition module 10 is used to acquire the water inlet parameters and target water temperature of the water dispenser; the second acquisition module 20 is used to acquire the compensation temperature and compensation flow rate of the mixed water based on the water inlet parameters of the water dispenser; the third acquisition module 30 is used to acquire the target cold water outlet flow rate and the actual cold water outlet flow rate of the water dispenser based on the water inlet parameters, target water temperature, compensation temperature and compensation flow rate; and the control module 40 is used to adjust the control parameters of the cold water pump based on the target cold water outlet flow rate and the actual cold water outlet flow rate to make the water dispenser output water at a constant temperature.

[0116] Furthermore, in some embodiments of the present invention, the inlet water parameters include cold water inlet pressure, cold water inlet temperature, hot water outlet flow rate, and hot water outlet temperature.

[0117] Furthermore, in some embodiments of the present invention, the third acquisition module 30 is also used to acquire the compensation temperature of the mixed outlet water based on the cold water inlet temperature; and to acquire the target cold water outlet flow rate based on the cold water inlet temperature, the hot water outlet flow rate, the hot water outlet temperature, and the compensation temperature.

[0118] Furthermore, in some embodiments of the present invention, the third acquisition module 30 is also used to acquire the compensation flow rate of the mixed outlet water based on the cold water inlet temperature; and to acquire the actual cold water outlet flow rate based on the cold water inlet pressure and the compensation flow rate.

[0119] Furthermore, in some embodiments of the present invention, the control module 40 is also used to obtain the difference between the target cold water outlet flow rate and the actual cold water outlet flow rate; and to perform PID adjustment on the control parameters of the cold water pump based on the difference.

[0120] Furthermore, in some embodiments of the present invention, the control module 40 is also used to obtain a minimum adjustable flow rate threshold; if the difference is less than or equal to the minimum adjustable flow rate threshold, the current control parameters of the chilled water pump are kept unchanged.

[0121] Furthermore, in some embodiments of the present invention, the control module 40 is also used to obtain the minimum duty cycle and the maximum duty cycle of the chilled water pump; if the target duty cycle is less than the minimum duty cycle, or the target duty cycle is greater than the maximum duty cycle, then the current control parameters of the chilled water pump are kept unchanged.

[0122] It should be understood that the specific implementation of the temperature control device of the water dispenser in the embodiments of the present invention corresponds one-to-one with the specific implementation of the temperature control method of the water dispenser in the foregoing embodiments of the present invention. To reduce redundancy, it will not be described again here.

[0123] In summary, the temperature control device of the water dispenser according to the embodiments of the present invention continuously corrects the control parameters of the cold water pump based on the target cold water flow rate and the actual cold water flow rate, so as to reduce the difference between the target cold water flow rate and the actual cold water flow rate, thereby making the actual water temperature of the water dispenser continuously approach the target water temperature, achieving the purpose of precise temperature control, and ensuring that the water dispenser dispenses water at a constant temperature.

[0124] Figure 9 This is a block diagram of a water dispenser according to an embodiment of the present invention.

[0125] Specifically, in some embodiments of the present invention, such as Figure 9 As shown, the water dispenser 1000 includes the temperature control device 100 of the water dispenser described in the above embodiment of the present invention.

[0126] It should be understood that the specific implementation of the water dispenser in the embodiments of the present invention can refer to the specific implementation of the temperature control method of the water dispenser in the foregoing embodiments of the present invention. In addition, the other components and functions of the washing machine in the embodiments of the present invention are known to those skilled in the art, and will not be described in detail here in order to reduce redundancy.

[0127] In summary, the water dispenser according to the embodiments of the present invention, by employing the aforementioned temperature control device, enables the actual water temperature of the water dispenser to continuously approach the target water temperature, thereby achieving precise temperature control and ensuring constant temperature water output from the water dispenser.

[0128] It should be noted that the logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as a sequenced list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by, or in conjunction with, an instruction execution system, apparatus, or device (such as a computer-based system, a processor-included system, or other system that can fetch and execute instructions from, an instruction execution system, apparatus, or device). For the purposes of this specification, "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transmit programs for use by, or in conjunction with, an instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of computer-readable media include: an electrical connection having one or more wires (electronic device), a portable computer disk drive (magnetic device), random access memory (RAM), read-only memory (ROM), erasable and editable read-only memory (EPROM or flash memory), fiber optic devices, and portable optical disc read-only memory (CDROM). Alternatively, the computer-readable medium may be paper or other suitable media on which the program can be printed, since the program can be obtained electronically, for example, by optically scanning the paper or other medium, followed by editing, interpreting, or otherwise processing as necessary, and then stored in a computer memory.

[0129] It should be understood that various parts of the present invention can be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, multiple steps or methods can be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, it can be implemented using any one or a combination of the following techniques known in the art: discrete logic circuits having logic gates for implementing logical functions on data signals, application-specific integrated circuits (ASICs) having suitable combinational logic gates, programmable gate arrays (PGAs), field-programmable gate arrays (FPGAs), etc.

[0130] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0131] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0132] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0133] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0134] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0135] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A temperature control method for a water dispenser, characterized in that, The water dispenser includes a cold water pump and a hot water pump, and the method includes: The water inlet parameters and target water temperature of the water dispenser are obtained. The water inlet parameters include cold water inlet pressure, cold water inlet temperature, hot water outlet flow rate, and hot water outlet temperature. The compensation temperature and compensation flow rate of the mixed water are obtained based on the water inlet parameters of the water dispenser. The compensation temperature is used to compensate for the temperature loss in the pipeline, and the compensation flow rate is used to compensate for the water flow rate corresponding to different inlet water temperatures. Based on the inlet water parameters, the target water temperature, the compensation temperature, and the compensation flow rate, the target cold water outlet flow rate and the actual cold water outlet flow rate of the water dispenser are obtained; wherein, obtaining the target cold water outlet flow rate of the water dispenser includes: obtaining the compensation temperature of the mixed outlet water based on the cold water inlet temperature; obtaining the target cold water outlet flow rate based on the cold water inlet temperature, the hot water outlet flow rate, the hot water outlet temperature, and the compensation temperature; obtaining the actual cold water outlet flow rate of the water dispenser includes: obtaining the compensation flow rate of the mixed outlet water based on the cold water inlet temperature; obtaining the actual cold water outlet flow rate based on the cold water inlet pressure and the compensation flow rate; Based on the target cold water flow rate and the actual cold water flow rate, the control parameters of the cold water pump are adjusted to ensure that the water dispenser dispenses water at a constant temperature.

2. The temperature control method for a water dispenser according to claim 1, characterized in that, The adjustment of the control parameters of the cold water pump includes: Obtain the difference between the target cold water outlet flow rate and the actual cold water outlet flow rate; The control parameters of the chilled water pump are adjusted using PID control based on the difference.

3. The temperature control method for a water dispenser according to claim 2, characterized in that, The method further includes: Obtain the minimum regulated flow threshold; If the difference is less than or equal to the minimum adjustable flow rate threshold, the current control parameters of the chilled water pump remain unchanged.

4. The temperature control method for a water dispenser according to claim 3, characterized in that, The method further includes: Obtain the minimum and maximum duty cycles of the cold water pump; If the target duty cycle is less than the minimum duty cycle, or if the target duty cycle is greater than the maximum duty cycle, then the current control parameters of the chilled water pump remain unchanged. The target duty cycle is obtained using the following formula: ； in, The target duty cycle for the chilled water pump. To preset the proportional gain, Points time, To preset the differentiation time, The difference between the target cold water outflow rate and the actual cold water outflow rate.

5. A computer-readable storage medium, characterized in that, It stores a temperature control program for the water dispenser, which, when executed by a processor, implements the temperature control method for the water dispenser according to any one of claims 1-4.

6. A temperature control device for a water dispenser, characterized in that, The water dispenser includes a cold water pump and a hot water pump, and the device includes: The first acquisition module is used to acquire the water inlet parameters and target water temperature of the water dispenser. The water inlet parameters include cold water inlet pressure, cold water inlet temperature, hot water outlet flow rate, and hot water outlet temperature. The second acquisition module is used to acquire the compensation temperature and compensation flow rate of the mixed water according to the water inlet parameters of the water dispenser. The compensation temperature is used to compensate for the temperature loss in the pipeline, and the compensation flow rate is used to compensate for the water flow rate corresponding to different inlet temperatures. The third acquisition module is used to acquire the target cold water output flow rate and the actual cold water output flow rate of the water dispenser based on the inlet water parameters, the target water temperature, the compensation temperature, and the compensation flow rate; wherein, acquiring the target cold water output flow rate of the water dispenser includes: acquiring the compensation temperature of the mixed output water based on the cold water inlet temperature; acquiring the target cold water output flow rate based on the cold water inlet temperature, the hot water output flow rate, the hot water output temperature, and the compensation temperature; acquiring the actual cold water output flow rate of the water dispenser includes: acquiring the compensation flow rate of the mixed output water based on the cold water inlet temperature; acquiring the actual cold water output flow rate based on the cold water inlet pressure and the compensation flow rate; The control module is used to adjust the control parameters of the cold water pump according to the target cold water flow rate and the actual cold water flow rate, so that the water dispenser can dispense water at a constant temperature.

7. A water dispenser, characterized in that, The water dispenser includes the temperature control device for the water dispenser as described in claim 6.

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