A temperature control method and device of a water outlet heating device and the water outlet heating device

Abstract

The present application relates to the technical field of device control, and discloses a temperature control method and device for a water outlet heating device and the water outlet heating device. The present application obtains the current water outlet end temperature of the water outlet heating device, calculates the temperature difference between the water outlet target temperature and the current water outlet end temperature, calculates the water pump target water outlet flow rate or the target heating power of the heating module based on the temperature difference, and then directly matches and determines the water pump target driving parameter or the heating module driving parameter based on the preset corresponding relationship between the water pump water outlet flow rate and the water pump driving parameter or the corresponding relationship between the heating power of the heating module and the heating module driving parameter, so as to control the water pump to work at the target driving parameter or control the heating module to work at the target driving parameter, thereby adjusting the current water outlet end temperature of the water outlet heating device to the water outlet target temperature, improving the device temperature control precision, reducing the adjustment time of the water outlet heating device during operation, and then improving the heating speed and user experience.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of device control, in particular to a temperature control method and device of a water outlet heating device and the water outlet heating device. BACKGROUND

[0002] At present, instant drinking water devices have entered the mainstream market. The instant temperature control technology has the technical feature of "instant heating". The water outlet temperature control precision and the temperature control speed are important evaluation dimensions of the instant heating device. Therefore, how to improve the temperature control precision and the temperature rising speed of the instant heating device and then improve the user experience has become a problem faced by the industry. SUMMARY

[0003] Therefore, the present application provides a temperature control method and device of a water outlet heating device to solve the problem that how to improve the temperature control precision and the temperature rising speed of the instant heating device and then improve the user experience.

[0004] In a first aspect, the present application provides a temperature control method of a water outlet heating device. The water outlet heating device comprises a water pump and a heating module. The method comprises the following steps: in response to a device water outlet instruction, obtaining a current water outlet end temperature of the water outlet heating device, wherein the device water outlet instruction at least comprises a water outlet target temperature; calculating a temperature difference value of the water outlet target temperature and the current water outlet end temperature, and calculating a water pump target water outlet flow rate or a target heating power of the heating module based on the temperature difference value; determining a water pump target driving parameter or a heating module driving parameter based on a preset corresponding relationship between the water pump water outlet flow rate and the water pump driving parameter, or a preset corresponding relationship between the heating power of the heating module and the heating module driving parameter, and the water pump target water outlet flow rate or the target heating power of the heating module; and controlling the water pump or the heating module to work based on the water pump target driving parameter or the heating module target driving parameter, so as to adjust the current water outlet end temperature of the water outlet heating device to the water outlet target temperature.

[0005] The temperature control method of the water outlet heating device provided by the present application can obtain the current water outlet end temperature of the water outlet heating device, calculate the temperature difference value of the water outlet target temperature and the current water outlet end temperature, calculate the water pump target water outlet flow rate or the target heating power of the heating module based on the temperature difference value, and then directly determine the water pump target driving parameter or the heating module driving parameter based on the preset corresponding relationship between the water pump water outlet flow rate and the water pump driving parameter, or the preset corresponding relationship between the heating power of the heating module and the heating module driving parameter. The water pump is controlled to work at the target driving parameter, or the heating module is controlled to work at the target driving parameter, so as to adjust the current water outlet end temperature of the water outlet heating device to the water outlet target temperature, improve the device temperature control precision, reduce the adjustment time of the water outlet heating device in the running process, and then improve the heating speed and the user experience.

[0006] In an optional embodiment, the preset correspondence between the water pump outlet flow rate and the water pump driving parameter is obtained by fitting all historical water pump outlet flow rates and corresponding water pump driving parameters obtained when the outlet water heating device is in a steady working state, or the preset correspondence between the heating power of the heating module and the heating module driving parameter is obtained by fitting all historical heating powers of the heating module and corresponding heating module driving parameters obtained when the outlet water heating device is in a steady working state.

[0007] The application records the relationships between the heating power of the heating module and the driving parameter of the heating module and between the outlet flow rate and the driving parameter of the water pump according to the whole machine use scene and the historical working process of the whole machine, so as to reduce the problems of slow temperature rise and untimely heating caused by adjusting the load driving parameter during the instant heating process.

[0008] In an optional embodiment, after adjusting the current outlet water temperature of the outlet water heating device to the outlet water target temperature, the method further comprises: obtaining the current outlet water flow rate of the water pump, establishing a first correspondence between the current outlet water flow rate of the water pump and the water pump target driving parameter, and updating the correspondence between the water pump outlet flow rate and the water pump driving parameter based on the first correspondence, or obtaining the current heating power of the heating module, establishing a second correspondence between the current heating power of the heating module and the heating module target driving parameter, and updating the correspondence between the heating power of the heating module and the heating module driving parameter based on the second correspondence.

[0009] The application obtains the power and flow rate data in real time during the working process, fits the power driving curve and the flow rate driving curve under the user use condition, and calibrates the matched control relationship between the power and the flow rate, so as to ensure the reliability of the scheme.

[0010] In an optional embodiment, the controlling the water pump or the heating module to work based on the water pump target driving parameter or the heating module target driving parameter comprises: obtaining the current heating efficiency of the outlet water heating device; determining the current driving weight based on the preset different driving weights corresponding to different heating efficiencies of the outlet water heating device and the current heating efficiency; adjusting the water pump target driving parameter or the heating module target driving parameter based on the current driving weight, and controlling the water pump or the heating module to work by using the adjusted water pump target driving parameter or the heating module target driving parameter.

[0011] The application determines a current driving weight based on the current heating efficiency of the water outlet heating device, adjusts a water pump target driving parameter or a heating module target driving parameter by using the driving weight, and controls the water pump or the heating module to work by using the adjusted water pump target driving parameter or the heating module target driving parameter, so as to improve the precision of the temperature control of the device and ensure the normal operation of the water outlet heating device.

[0012] In an optional embodiment, the calculation of the water pump target water outlet flow rate based on the temperature difference comprises: inputting the preset fixed heating power of the heating module and the temperature difference into a flow water temperature rise relationship formula to obtain the water pump target water outlet flow rate, the flow water temperature rise relationship formula representing the corresponding relationship among the heating power of the heating module, the temperature difference and the water pump water outlet flow rate, or the calculation of the target heating power of the heating module based on the temperature difference comprises: inputting the preset fixed water outlet flow rate of the water pump and the temperature difference into the flow water temperature rise relationship formula to obtain the target heating power of the heating module.

[0013] The preset flow water temperature rise relationship formula is used to calculate the target heating power of the heating module by the fixed water outlet flow rate and the calculated temperature difference, or to calculate the target water outlet flow rate of the water pump by the fixed heating power of the heating module and the calculated temperature difference, so as to improve the precision of the temperature control.

[0014] In an optional embodiment, the flow water temperature rise relationship formula is as follows:

[0015]

[0016] wherein, V represents the water pump water outlet flow rate, V represents the water pump water outlet flow rate, t represents the unit time, P represents the heating power of the heating module, η represents the heating efficiency, C represents the water specific heat capacity, and ρ represents the water density, ΔT represents the temperature difference.

[0017] In an optional embodiment, the method further comprises: collecting the water outlet end temperature of the heating module by using a temperature collection device; judging whether the difference between the water outlet end temperature and the water outlet target temperature is less than a preset temperature difference threshold value; if the difference between the water outlet end temperature and the water outlet target temperature is less than the preset temperature difference threshold value, it is determined that the water outlet heating device is in a working steady state, and the step of obtaining the current water outlet flow rate of the water pump is performed, or the step of obtaining the current heating power of the heating module is performed.

[0018] The difference between the water outlet end temperature of the heating module and the water outlet target temperature is compared with the difference threshold value to determine whether the water outlet heating device is in a working steady state, and then the corresponding relationship between the water outlet flow rate and the water pump driving parameter, or the corresponding relationship between the heating power of the heating module and the heating module driving parameter is established, so as to improve the precision of the established relationship curve.

[0019] In a second aspect, the present application provides a temperature control device of a water heating device, the water heating device comprising a water pump and a heating module, the device comprising: a water outlet end temperature acquisition module, configured to acquire a current water outlet end temperature of the water heating device in response to a device water outlet instruction, the device water outlet instruction comprising at least a water outlet target temperature; a theoretical flow rate or heating power calculation module, configured to calculate a temperature difference between the water outlet target temperature and the current water outlet end temperature, and calculate a water pump target water outlet flow rate or a target heating power of the heating module based on the temperature difference; a water pump or heating module driving parameter calculation module, configured to determine a water pump target driving parameter or a heating module target driving parameter based on a preset corresponding relationship between a water pump water outlet flow rate and a water pump driving parameter, or a preset corresponding relationship between a heating power of the heating module and a heating module driving parameter, and the water pump target water outlet flow rate or the target heating power of the heating module; and a temperature control module, configured to control the water pump or the heating module to work based on the water pump target driving parameter or the heating module target driving parameter, so as to adjust the current water outlet end temperature of the water heating device to the water outlet target temperature.

[0020] In a third aspect, the present application provides a water heating device, the water heating device comprising a water pump, a heating module and a controller, the controller comprising a memory and a processor, the memory and the processor being communicatively connected to each other, the memory storing computer instructions, and the processor executing the computer instructions to perform the temperature control method of the water heating device according to the first aspect or any one of the corresponding embodiments thereof.

[0021] In an optional embodiment, the water heating device further comprises a temperature acquisition device.

[0022] In an optional embodiment, the water heating device is a drinking water device that can be heated immediately after being drunk.

[0023] In a fourth aspect, the present application provides a computer readable storage medium, the computer readable storage medium storing computer instructions, the computer instructions being used to make a computer execute the temperature control method of the water heating device according to the first aspect or any one of the corresponding embodiments thereof. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the drawings needed in the specific embodiments or the prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without any creative effort.

[0025] Figure 1is a flowchart of a temperature control method of a water outlet heating device according to an embodiment of the present application;

[0026] Figure 2 is a flowchart of another temperature control method of a water outlet heating device according to an embodiment of the present application;

[0027] Figure 3 is a flowchart of a flow rate-water pump driving voltage curve establishment according to an embodiment of the present application;

[0028] Figure 4 is a flowchart of a temperature control method of a water outlet heating device according to an embodiment of the present application;

[0029] Figure 5 is a flowchart of a temperature control method of a water outlet heating device according to an embodiment of the present application;

[0030] Figure 6 is a structural block diagram of a water outlet heating device according to an embodiment of the present application;

[0031] Figure 7 is a structural block diagram of a temperature control device of a water outlet heating device according to an embodiment of the present application;

[0032] Figure 8 is a hardware structure diagram of a controller according to an embodiment of the present application. DETAILED DESCRIPTION

[0033] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0034] At present, instant drinking water equipment has entered the mainstream market, and the instant temperature control technology has the technical characteristics of "instant heating". The water outlet heating temperature control precision and the temperature control speed are important evaluation dimensions of the instant heating equipment. The industry is faced with the pain point problem of improving the temperature control precision and the temperature rising speed of the instant heating equipment.

[0035] According to the embodiments of the present application, a temperature control method of a water outlet heating device is provided. It should be noted that the steps shown in the flowchart of the drawings can be executed in a computer system such as a set of computer executable instructions, and although the logical order is shown in the flowchart, in some cases, the steps shown or described herein can be executed in an order different from that shown herein.

[0036] A temperature control method of a water outlet heating device is provided in the embodiment, which can be used for the controller described above, Figure 1 is a flow chart of the temperature control method of the water outlet heating device according to the embodiment of the present application, as shown in the figure, the flow comprises the following steps: Figure 1

[0037] In step S101, the current water outlet end temperature of the water outlet heating device is acquired in response to the device water outlet instruction.

[0038] The device water outlet instruction at least comprises a water outlet target temperature.

[0039] The water outlet heating device is not limited in the embodiment of the present application, which can be a water heater, a water dispenser or other devices with water outlet heating function. For example, a pure drinking water dispenser with instant heating function, a user can select the target temperature of hot water through the device screen, and the device starts heating in response to the instruction, and the water is heated to the target temperature and then flows out. The heating system of the water outlet heating device is usually composed of a heating module, a direct current water pump and a water outlet pipeline. The heating module can be set according to the type of the water outlet heating device, which is generally a heating body. For example, the heating system controls the heating body and the direct current water pump to pump water into the heating body and then flows out after heating.

[0040] The controller of the water outlet heating device in the embodiment of the present application can acquire the current water outlet end temperature of the water outlet heating device through the temperature acquisition device such as temperature sensor, temperature sensing bag and the like arranged at the water outlet end of the heating body in response to the device water outlet instruction before the water outlet device starts heating, which is only an example.

[0041] In step S102, the temperature difference between the water outlet target temperature and the current water outlet end temperature is calculated, and the water pump target water outlet flow rate or the target heating power of the heating module is calculated based on the temperature difference.

[0042] The temperature difference between the water outlet target temperature and the current water outlet end temperature can be calculated based on the water outlet target temperature selected by the user. When the heating power of the heating module is fixed, the slower the water outlet flow rate in unit time, that is, the smaller the water flow, the higher the heating temperature. The corresponding database of temperature difference and water pump water outlet flow rate can be set in advance based on multiple experiments and other methods to improve the temperature rise adjustment speed and accuracy, or when the water pump water outlet flow rate is fixed, the higher the heating power of the heating module, the faster the heating temperature rises. The corresponding database of temperature difference and heating power of the heating module can also be set based on multiple experiments and other methods to improve the temperature rise adjustment speed and accuracy. After the temperature difference is determined, the water pump target water outlet flow rate or the target heating power of the heating module can be determined from the preset database, which is only an example.

[0043] ​Step S103, determining the water pump target driving parameter or the heating module target driving parameter based on the preset corresponding relationship between the water pump outlet flow rate and the water pump driving parameter, or the preset corresponding relationship between the heating power of the heating module and the heating module driving parameter, and the water pump target outlet flow rate or the target heating power of the heating module.

[0044] The embodiment of the present application can preset the corresponding relationship between the water pump outlet flow rate and the water pump driving parameter, or the corresponding relationship between the heating power of the heating module and the heating module driving parameter, based on the model and attribute of the water pump and the heating module, and then can determine the water pump target driving parameter according to the determined water pump target outlet flow rate, or can determine the heating module target driving parameter according to the determined target heating power of the heating module, for example.

[0045] Step S104, controlling the water pump or the heating module to work based on the water pump target driving parameter or the heating module target driving parameter, so as to adjust the current outlet end temperature of the outlet heating equipment to the outlet target temperature.

[0046] After determining the water pump target driving parameter or the heating module target driving parameter, the embodiment of the present application can control the water pump to work based on the water pump target driving parameter, or control the heating module to work based on the heating module target driving parameter, so as to adjust the current outlet end temperature of the outlet heating equipment to the outlet target temperature, and the user can use water.

[0047] The temperature control method of the outlet heating equipment provided by the embodiment can obtain the current outlet end temperature of the outlet heating equipment, calculate the temperature difference between the outlet target temperature and the current outlet end temperature, calculate the water pump target outlet flow rate or the target heating power of the heating module based on the temperature difference, and then directly determine the water pump target driving parameter or the heating module driving parameter based on the preset corresponding relationship between the water pump outlet flow rate and the water pump driving parameter, or the preset corresponding relationship between the heating power of the heating module and the heating module driving parameter, control the water pump to work at the target driving parameter, or control the heating module to work at the target driving parameter, so as to adjust the current outlet end temperature of the outlet heating equipment to the outlet target temperature, improve the equipment temperature control precision, reduce the adjustment time of the outlet heating equipment in the running process, and then improve the heating speed and the user experience.

[0048] In the embodiment, a temperature control method of an outlet heating equipment is provided, which can be used for the controller described above, Figure 2 is a flowchart of the temperature control method of the outlet heating equipment according to the embodiment of the present application, as Figure 2 shown, the flowchart includes the following steps:

[0049] Step S201, in response to the device water outlet instruction, the current water outlet end temperature of the water outlet heating device is acquired. The device water outlet instruction at least includes the water outlet target temperature. For details, please refer to Figure 1 Step S101 of the embodiment shown, which will not be repeated here.

[0050] Step S202, the temperature difference between the water outlet target temperature and the current water outlet end temperature is calculated, and the water pump target water outlet flow rate or the target heating power of the heating module is calculated based on the temperature difference. For details, please refer to Figure 1 Step S102 of the embodiment shown, which will not be repeated here.

[0051] Step S203, based on the preset corresponding relationship between the water pump water outlet flow rate and the water pump driving parameter, or the corresponding relationship between the heating power of the heating module and the driving parameter of the heating module, and the water pump target water outlet flow rate or the target heating power of the heating module, the water pump target driving parameter or the heating module driving parameter is determined. For details, please refer to Figure 1 Step S103 of the embodiment shown, which will not be repeated here.

[0052] Specifically, the preset corresponding relationship between the water pump water outlet flow rate and the water pump driving parameter is obtained by fitting processing based on historical all water pump water outlet flow rates and corresponding water pump driving parameters obtained when the historical water outlet heating device is in a working steady state, or the corresponding relationship between the heating power of the heating module and the driving parameter of the heating module is obtained by fitting processing based on historical all heating powers of the heating module and corresponding driving parameters of the heating module obtained when the historical water outlet heating device is in a working steady state.

[0053] As Figure 3 The corresponding relationship between the water pump water outlet flow rate and the water pump driving parameter of the embodiment of the application is in the current historical water outlet heating device in a working steady state, wherein the determination condition of the heating device in a working steady state can be adjusting the current water outlet end temperature to the water outlet target temperature, and the water outlet flow rate value fed back by the flow feedback device can be obtained when the device is water outlet, and the driving parameter of the direct current water pump in the control system can also be obtained, wherein the driving parameter is not limited, which can be driving voltage and driving power, etc. Taking driving voltage as an example, the corresponding relationship between the water outlet flow rate value and the driving voltage of the direct current water pump can be established, and the established corresponding relationship between the water outlet flow rate value and the driving voltage of the direct current water pump is stored in the data storage chip, such as ROM memory, and then the fitting processing is performed with the historical corresponding relationship between the water outlet flow rate and the direct current water pump stored in the ROM memory, to obtain the corresponding relationship between the water pump water outlet flow rate and the water pump driving parameter, wherein the corresponding relationship can be represented in the form of a curve or a straight line.

[0054] The correspondence between the heating power of the heating module and the driving parameter of the heating module can also be obtained by, when the current time historical water heating device is in a working steady state, acquiring the heating power of the heating module, such as acquiring the heating power data by means of a voltage, a current detection circuit, and the like, just as an example, and then acquiring the driving parameter of the heating module, where the driving parameter of the heating module can be a heating body driving duty cycle, just as an example, and then establishing the correspondence between the heating power of the heating module and the driving parameter of the heating module and storing in a data storage chip for fitting processing, to obtain the correspondence between the heating power of the heating module and the driving parameter of the heating module under the working condition of the whole machine.

[0055] The application records the relationship between the heating power of the heating module and the driving parameter of the heating module and the relationship between the water flow rate and the driving parameter of the water pump during the historical working process of the whole machine according to the use scene of the whole machine, to reduce the problems of slow temperature rising speed and untimely heating caused by adjusting the driving parameter of the load during the instant heating process.

[0056] In step S204, the water pump or the heating module is controlled based on the target driving parameter of the water pump or the target driving parameter of the heating module, to adjust the current outlet water end temperature of the water heating device to the outlet water target temperature. For details, please refer to Figure 1 The step S104 of the embodiment shown will not be repeated here.

[0057] In step S205, the outlet water end temperature of the heating module is acquired by the temperature acquisition device; it is judged whether the difference between the outlet water end temperature and the outlet water target temperature is less than a preset temperature difference threshold value; if the difference between the outlet water end temperature and the outlet water target temperature is less than the preset temperature difference threshold value, it is determined that the water heating device is in a working steady state.

[0058] After the water pump or the heating module is controlled based on the target driving parameter of the water pump or the target driving parameter of the heating module, the outlet water end temperature of the heating module can be acquired in real time by the temperature acquisition device, and it is judged whether the difference between the outlet water end temperature and the outlet water target temperature is less than a preset temperature difference threshold value, |Ttarget temperature-Toutlet water end temperature|≤x℃, where x represents the preset temperature difference threshold value; if the difference between the outlet water end temperature and the outlet water target temperature is not less than the preset temperature difference threshold value, the outlet water end temperature of the heating module is continuously acquired; if the difference between the outlet water end temperature and the outlet water target temperature is less than the preset temperature difference threshold value, it is determined that the water heating device is in a working steady state.

[0059] The application compares the difference between the outlet water end temperature of the heating module and the outlet water target temperature with the difference threshold value, judges that the water heating device is in a working steady state, and then establishes the correspondence between the water flow rate and the driving parameter of the water pump or the correspondence between the heating power of the heating module and the driving parameter of the heating module, to improve the accuracy of the established relationship curve.

[0060] In step S206, the current water outlet flow rate of the water pump is acquired, a first correspondence between the current water outlet flow rate of the water pump and a target driving parameter of the water pump is established, and the correspondence between the water outlet flow rate of the water pump and the driving parameter of the water pump is updated based on the first correspondence, or the current heating power of the heating module is acquired, a second correspondence between the current heating power of the heating module and a target driving parameter of the heating module is established, and the correspondence between the heating power of the heating module and the driving parameter of the heating module is updated based on the second correspondence.

[0061] When it is determined in the current time that the water outlet heating device is in a working steady state, the current water outlet flow rate of the water pump can be acquired through a flow feedback device, and a first correspondence between the current water outlet flow rate of the water pump and a target driving parameter of the water pump is established, so as to update the correspondence between the current water outlet flow rate of the water pump and the driving parameter of the water pump.

[0062] When it is determined in the current time that the water outlet heating device is in a working steady state, the current heating power of the heating module can be acquired through a voltage and current detection circuit, and a second correspondence between the current heating power of the heating module and a target driving parameter of the heating module is established, so as to update the correspondence between the current heating power of the heating module and the driving parameter of the heating module.

[0063] The power and flow rate data are acquired in real time in the working process, the power driving curve and the flow rate driving curve under the working condition of the user are fitted, and the matched control relationship between the power and the flow rate is calibrated, so as to ensure the reliability of the scheme.

[0064] In the embodiment, a temperature control method of a water outlet heating device is provided, which can be applied to the mobile terminal such as a mobile phone, a tablet computer and the like. Figure 4 The temperature control method of the water outlet heating device according to the embodiment of the present application is shown in the flow chart as shown in Figure 4 The flow chart includes the following steps:

[0065] In step S401, the current water outlet end temperature of the water outlet heating device is acquired in response to a device water outlet instruction. The device water outlet instruction at least includes a water outlet target temperature. For details, refer to step S201 of the embodiment shown in Figure 2 The embodiment shown in

[0066] In step S402, the temperature difference between the water outlet target temperature and the current water outlet end temperature is calculated, and the target water outlet flow rate of the water pump or the target heating power of the heating module is calculated based on the temperature difference.

[0067] Specifically, the water pump target outflow rate is calculated based on the temperature difference, including: inputting the preset fixed heating power of the heating module and the temperature difference into a flow water temperature rise relationship to obtain the water pump target outflow rate, the flow water temperature rise relationship representing the corresponding relationship among the heating power of the heating module, the temperature difference and the water pump outflow rate, or the target heating power of the heating module is calculated based on the temperature difference, including: inputting the preset fixed outflow rate of the water pump and the temperature difference into the flow water temperature rise relationship to obtain the target heating power of the heating module.

[0068] The embodiment of the present application can establish the flow water temperature rise relationship based on the fixed outflow rate of the water pump, the temperature difference and the heating power of the heating module in advance, the water pump target outflow rate can be calculated based on the temperature difference, including: inputting the preset fixed heating power of the heating module and the temperature difference into the flow water temperature rise relationship to obtain the water pump target outflow rate, and the target heating power of the heating module can be calculated based on the temperature difference, including: inputting the preset fixed outflow rate of the water pump and the temperature difference into the flow water temperature rise relationship to obtain the target heating power of the heating module.

[0069] Specifically, the flow water temperature rise relationship is:

[0070]

[0071] wherein, represents the water pump outflow rate, V represents the water pump outflow flow, t represents unit time, P represents the heating power of the heating module, represents the heating efficiency, C represents the specific heat capacity of water, and p represents the water density, represents the temperature difference.

[0072] The present application can improve the accuracy of temperature control by calculating the target heating power of the heating module based on the preset flow water temperature rise relationship, the fixed outflow rate and the calculated temperature difference, or calculating the target outflow rate of the water pump based on the preset flow water temperature rise relationship, the fixed heating power of the heating module and the calculated temperature difference.

[0073] Step S403: determining the water pump target driving parameter or the heating module driving parameter based on the preset corresponding relationship between the water pump outflow rate and the water pump driving parameter, or the corresponding relationship between the heating power of the heating module and the heating module driving parameter, and the water pump target outflow rate or the target heating power of the heating module. For details, please refer to Figure 2 The step S203 of the embodiment shown in the figure will not be described here again.

[0074] Step S404: controlling the water pump or the heating module to work based on the water pump target driving parameter or the heating module target driving parameter, so as to adjust the current outflow end temperature of the outflow heating equipment to the outflow target temperature.

[0075] Specifically, the above step S404 includes:

[0076] Step S4041: Obtain the current heating efficiency of the water heating device.

[0077] Step S4042: Determine the current driving weight based on the preset different driving weights corresponding to different heating efficiencies of the water heating device and the current heating efficiency.

[0078] Step S4043: Adjust the target drive parameters of the water pump or the target drive parameters of the heating module based on the current drive weight, and use the adjusted target drive parameters of the water pump or the target drive parameters of the heating module to control the operation of the water pump or the heating module.

[0079] In this embodiment of the invention, after determining the target driving parameters of the water pump or the driving parameters of the heating module, the current heating efficiency of the outlet water heating device can be obtained first. Based on the preset different driving weights corresponding to different heating efficiencies of the outlet water heating device and the current heating efficiency, the current driving weight can be determined. For example, if the outlet water heating device is in a cold start state, that is, after being idle for a long time, the corresponding driving weight is relatively small, such as 50%. That is, the higher the heating efficiency, the greater the corresponding driving weight. Then, the target driving parameters of the water pump or the target driving parameters of the heating module can be adjusted based on the current driving weight, and the adjusted target driving parameters of the water pump or the heating module can be used to control the operation of the water pump or the heating module.

[0080] This invention determines the current driving weight based on the current heating efficiency of the water outlet heating device, and uses the driving weight to adjust the target driving parameters of the water pump or the heating module. Then, it uses the adjusted target driving parameters of the water pump or the heating module to control the operation of the water pump or the heating module, which improves the accuracy of the equipment temperature control and ensures the normal operation of the water outlet heating device.

[0081] In specific embodiments, such as Figure 5 As shown, when the instant heating device starts heating, it obtains the current outlet water temperature and calculates the temperature difference between the current outlet water temperature and the target outlet water temperature. The temperature difference and preset fixed heating power and other parameter values ​​are input into the water flow temperature rise formula to calculate the target outlet water velocity of the water pump. Then, the target outlet water velocity of the water pump is substituted into the velocity-pump drive voltage curve to determine the target drive voltage of the water pump. The target drive voltage of the water pump is used to control the water pump to start the instant heating device and start the closed-loop control. The above is the detailed process of adjusting the water pump drive parameters. The process of adjusting the drive parameters of the heating module will not be described here.

[0082] This embodiment also provides a water heating device, such as... Figure 6 As shown, the heated water outlet device includes a water pump, a heating module, and a controller. The controller executes the temperature control method of the heated water outlet device described in the above embodiments, which will not be repeated here.

[0083] Specifically, the heated water outlet device further comprises a temperature acquisition device for acquiring the temperature of the water outlet end.

[0084] Specifically, the heated water outlet device is a drinking water device that can be heated immediately.

[0085] In the present embodiment, a temperature control device for a heated water outlet device is also provided, which is used to implement the above-mentioned embodiments and preferred embodiments, and will not be described again. As used below, the term "module" can be a combination of software and / or hardware that implements a predetermined function. Although the device described in the following embodiments is preferably implemented in software, hardware, or a combination of software and hardware is also possible and contemplated.

[0086] The present embodiment provides a temperature control device for a heated water outlet device, which comprises a water pump and a heating module, as shown in Figure 7 The temperature control device comprises: a water outlet end temperature acquisition module 701, configured to acquire the current water outlet end temperature of the heated water outlet device in response to a device water outlet instruction, the device water outlet instruction comprising at least a water outlet target temperature; a theoretical flow rate or heating power calculation module 702, configured to calculate the temperature difference between the water outlet target temperature and the current water outlet end temperature, and calculate the water pump target water outlet flow rate or the target heating power of the heating module based on the temperature difference; a water pump or heating module driving parameter calculation module 703, configured to determine the water pump target driving parameter or the heating module target driving parameter based on the preset correspondence between the water pump water outlet flow rate and the water pump driving parameter, or the preset correspondence between the heating power of the heating module and the heating module driving parameter, and the water pump target water outlet flow rate or the target heating power of the heating module; and a temperature control module 704, configured to control the water pump or the heating module to work based on the water pump target driving parameter or the heating module target driving parameter, so as to adjust the current water outlet end temperature of the heated water outlet device to the water outlet target temperature.

[0087] In some optional embodiments, the preset correspondence between the water pump water outlet flow rate and the water pump driving parameter is obtained by fitting processing of all historical water pump water outlet flow rates and corresponding water pump driving parameters acquired when the historical heated water outlet device is in a working steady state, or the preset correspondence between the heating power of the heating module and the heating module driving parameter is obtained by fitting processing of all historical heating powers of the heating module and corresponding heating module driving parameters acquired when the historical heated water outlet device is in a working steady state.

[0088] In some optional embodiments, after adjusting the current outlet water end temperature of the outlet water heating device to the outlet water target temperature, the temperature control device of the outlet water heating device further comprises: a first correspondence establishing module configured to obtain a current outlet water flow rate of the water pump, establish a first correspondence between the current outlet water flow rate of the water pump and a water pump target driving parameter, and update the correspondence between the outlet water flow rate of the water pump and the water pump driving parameter based on the first correspondence, or a second correspondence establishing module configured to obtain a current heating power of the heating module, establish a second correspondence between the current heating power of the heating module and a heating module target driving parameter, and update the correspondence between the heating power of the heating module and the heating module driving parameter based on the second correspondence.

[0089] In some optional embodiments, the temperature control module 704 comprises: a heating efficiency obtaining unit configured to obtain a current heating efficiency of the outlet water heating device; a driving weight determining unit configured to determine a current driving weight based on a preset correspondence between different heating efficiencies of the outlet water heating device and different driving weights, and the current heating efficiency; and a parameter control unit configured to adjust the water pump target driving parameter or the heating module target driving parameter based on the current driving weight, and control the water pump or the heating module to work by using the adjusted water pump target driving parameter or the heating module target driving parameter.

[0090] In some optional embodiments, the water pump target outlet water flow rate is calculated based on the temperature difference, including: inputting a preset fixed heating power of the heating module and the temperature difference into a flow water temperature rise relationship to obtain the water pump target outlet water flow rate, the flow water temperature rise relationship representing a correspondence among the heating power of the heating module, the temperature difference, and the water pump outlet water flow rate, or the target heating power of the heating module is calculated based on the temperature difference, including: inputting a preset fixed outlet water flow rate of the water pump and the temperature difference into the flow water temperature rise relationship to obtain the target heating power of the heating module.

[0091] In some optional embodiments, the flow water temperature rise relationship is:

[0092]

[0093] wherein, V represents the water pump outlet water flow rate, V represents the water pump outlet water flow, t represents a unit of time, and P represents the heating power of the heating module, represents the heating efficiency, C represents the water specific heat capacity, and p represents the water density, represents the temperature difference.

[0094] In some optional embodiments, the temperature control device of the water outlet heating equipment further includes: a water outlet temperature acquisition module, used to acquire the water outlet temperature of the heating module through a temperature acquisition device; a temperature difference calculation module, used to determine whether the difference between the water outlet temperature and the target water outlet temperature is less than a preset temperature difference threshold; and a device steady-state module, used to determine that the water outlet heating equipment is in a steady-state operation if the difference between the water outlet temperature and the target water outlet temperature is less than the preset temperature difference threshold, and to execute the step of acquiring the current water outlet flow rate of the water pump, or the step of acquiring the current heating power of the heating module.

[0095] Further functional descriptions of the above modules and units are the same as those in the corresponding embodiments described above, and will not be repeated here.

[0096] In this embodiment, the temperature control device of the water heating equipment is presented in the form of a functional unit. Here, a unit refers to an ASIC (Application Specific Integrated Circuit) circuit, a processor and memory that execute one or more software or fixed programs, and / or other devices that can provide the above functions.

[0097] This invention also provides a controller having the above-described features. Figure 7 The temperature control device of the water heating equipment shown.

[0098] Please see Figure 8 , Figure 8 This is a schematic diagram of the structure of a controller provided in an optional embodiment of the present invention, such as... Figure 8 As shown, the controller includes one or more processors 10, memory 20, and interfaces for connecting the components, including high-speed interfaces and low-speed interfaces. The components communicate with each other via different buses and can be mounted on a common motherboard or otherwise as required. The processors can process instructions executed within the controller, including instructions stored in or on memory to display graphical information of a GUI on external input / output devices (such as display devices coupled to the interfaces). In some alternative implementations, multiple processors and / or multiple buses can be used with multiple memories and multiple memory modules, if desired. Similarly, multiple controllers can be connected, each providing some of the necessary operations (e.g., as a server array, a group of blade servers, or a multiprocessor system). Figure 8 Take a processor 10 as an example.

[0099] The processor 10 can be a central processing unit, a network processing unit, or a combination thereof. The processor 10 can further include a hardware chip. The hardware chip can be an application specific integrated circuit, a programmable logic device, or a combination thereof. The programmable logic device can be a complex programmable logic device, a field programmable logic device, a general array logic, or any combination thereof.

[0100] The memory 20 stores instructions executable by the at least one processor 10 to cause the at least one processor 10 to perform the methods illustrated in the above embodiments.

[0101] The memory 20 can include a program storage area and a data storage area. The program storage area can store an operating system and application programs required by at least one function. The data storage area can store data created according to the use of the controller, etc. In addition, the memory 20 can include a high-speed random access memory, and can further include a non-transitory memory, such as at least one magnetic disk storage device, a flash memory device, or other non-transitory solid-state memory device. In some alternative embodiments, the memory 20 can optionally include a memory disposed remotely with respect to the processor 10, and these remote memories can be connected to the controller through a network. Examples of the network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and a combination thereof.

[0102] The memory 20 can include a volatile memory, such as a random access memory, and can also include a non-volatile memory, such as a flash memory, a hard disk, or a solid state disk. The memory 20 can further include a combination of the above-mentioned types of memories.

[0103] The controller further includes an input device 30 and an output device 40. The processor 10, the memory 20, the input device 30, and the output device 40 can be connected through a bus or other means, Figure 8 The connection through the bus is taken as an example.

[0104] The input device 30 can receive inputted digital or character information, and generate key signal inputs related to the user settings and function controls of the controller, such as a touch screen, a keypad, a mouse, a trackpad, a touchpad, a pointing stick, one or more mouse buttons, a trackball, a joystick, etc. The output device 40 can include a display device, an auxiliary lighting device (e.g., an LED), a tactile feedback device (e.g., a vibration motor), etc. The display device includes, but is not limited to, a liquid crystal display, a light emitting diode, a display, and a plasma display. In some alternative embodiments, the display device can be a touch screen.

[0105] The embodiments of the present application further provide a computer readable storage medium, and the method according to the embodiments of the present application can be implemented in hardware, firmware, or recorded in a storage medium, or be implemented as computer codes stored in a remote storage medium or a non-transitory machine readable storage medium and downloaded through a network and stored in a local storage medium, so that the method described herein can be processed by such software on a storage medium using a general purpose computer, a special purpose processor, or programmable or special hardware. The storage medium can be a magnetic disk, an optical disk, a read-only memory, a random access memory, a flash memory, a hard disk, or a solid state disk, etc. Further, the storage medium can also include a combination of the above-mentioned types of memories. It can be understood that the computer, the processor, the microprocessor controller, or the programmable hardware includes a storage component that can store or receive software or computer codes, when the software or computer codes are accessed and executed by the computer, the processor, or the hardware, the method shown in the above embodiments is implemented.

[0106] Although the embodiments of the present application are described in conjunction with the accompanying drawings, various modifications and changes can be made by those skilled in the art without departing from the spirit and scope of the present application, and such modifications and changes fall within the scope defined by the appended claims.

Claims

1. A temperature control method for a water outlet heating device, the water outlet heating device comprising a water pump and a heating module, characterized in that, The method includes: In response to a water outlet command, the current outlet temperature of the water heating device is obtained, wherein the water outlet command includes at least a target outlet temperature; Calculate the temperature difference between the target outlet water temperature and the current outlet water temperature, and calculate the target outlet water flow rate of the water pump or the target heating power of the heating module based on the temperature difference; Based on the preset correspondence between the water pump outlet flow rate and the water pump drive parameters, or the correspondence between the heating power of the heating module and the heating module drive parameters, and the target water pump outlet flow rate or the target heating power of the heating module, the target drive parameters of the water pump or the drive parameters of the heating module are determined. The water pump or heating module is controlled to operate based on the target driving parameters of the water pump or heating module, so as to adjust the current outlet water temperature of the outlet water heating device to the target outlet water temperature. The preset correspondence between the water pump outlet flow rate and the water pump drive parameters is obtained by fitting all historical water pump outlet flow rates and corresponding water pump drive parameters when the water heating equipment is in a steady working state. The relationship between the heating power of the heating module and the driving parameters of the heating module is obtained by fitting the heating power of all historical heating modules and the corresponding driving parameters of the heating module when the water heating device is in a steady working state. The water heating device is judged to be in a steady working state by comparing the difference between the water outlet temperature and the target water temperature of the heating module with the difference threshold. After adjusting the current outlet water temperature of the water heating device to the target outlet water temperature, the method further includes: Obtain the current outlet flow rate of the water pump, establish a first correspondence between the current outlet flow rate and the target driving parameters of the water pump, and update the correspondence between the outlet flow rate and the driving parameters based on the first correspondence, or... Obtain the current heating power of the heating module, establish a second correspondence between the current heating power of the heating module and the target driving parameters of the heating module, and update the correspondence between the heating power of the heating module and the driving parameters of the heating module based on the second correspondence.

2. The method according to claim 1, characterized in that, The control of the water pump or heating module based on the target driving parameters of the water pump or the target driving parameters of the heating module includes: Obtain the current heating efficiency of the water heating equipment; Based on the preset different driving weights corresponding to different heating efficiencies of the water heating equipment, and the current heating efficiency, the current driving weight is determined. The target driving parameters of the water pump or the target driving parameters of the heating module are adjusted based on the current driving weight, and the water pump or heating module is controlled to work using the adjusted target driving parameters of the water pump or the target driving parameters of the heating module.

3. The method according to claim 1, characterized in that, The step of calculating the target outlet flow rate of the water pump based on the temperature difference includes: inputting the preset fixed heating power of the heating module and the temperature difference into the flow rate temperature rise formula to obtain the target outlet flow rate of the water pump. The flow rate temperature rise formula represents the correspondence between the heating power of the heating module, the temperature difference, and the outlet flow rate of the water pump, or... The calculation of the target heating power of the heating module based on the temperature difference includes: inputting the preset fixed water flow rate of the water pump and the temperature difference into the water flow temperature rise formula to obtain the target heating power of the heating module.

4. The method according to claim 3, characterized in that, The formula for the temperature rise of the flowing water is: in, V represents the water pump outlet velocity, t represents the water pump outlet flow rate, and P represents the heating power of the heating module. The heating efficiency is represented by C, the specific heat capacity of water is represented by ρ, and the density of water is represented by ρ. This represents the temperature difference.

5. The method according to claim 1, characterized in that, The method further includes: The outlet water temperature of the heating module is collected by a temperature acquisition device; Determine whether the difference between the outlet water temperature and the target outlet water temperature is less than a preset temperature difference threshold. If the difference between the outlet water temperature and the target outlet water temperature is less than a preset temperature difference threshold, the outlet water heating device is determined to be in a steady working state, and the step of obtaining the current outlet water flow rate of the water pump or the step of obtaining the current heating power of the heating module is executed.

6. A temperature control device for a water outlet heating device, the water outlet heating device comprising a water pump and a heating module, characterized in that, The device includes: The outlet water temperature acquisition module is used to acquire the current outlet water temperature of the water heating device in response to the device's water outlet command. The device's water outlet command includes at least the target outlet water temperature. The theoretical flow rate or heating power calculation module is used to calculate the temperature difference between the target outlet water temperature and the current outlet water temperature, and to calculate the target outlet water flow rate of the water pump or the target heating power of the heating module based on the temperature difference. A pump or heating module drive parameter calculation module is used to determine the target drive parameters of the pump or the drive parameters of the heating module based on a preset correspondence between the pump outlet flow rate and the pump drive parameters, or the correspondence between the heating power of the heating module and the heating module drive parameters, as well as the target outlet flow rate of the pump or the target heating power of the heating module. The temperature control module is used to control the operation of the water pump or the heating module based on the target driving parameters of the water pump or the target driving parameters of the heating module, so as to adjust the current outlet water temperature of the outlet water heating device to the target outlet water temperature. The preset correspondence between the water pump outlet flow rate and the water pump drive parameters is obtained by fitting all historical water pump outlet flow rates and corresponding water pump drive parameters when the water heating equipment is in a steady working state. The relationship between the heating power of the heating module and the driving parameters of the heating module is obtained by fitting the heating power of all historical heating modules and the corresponding driving parameters of the heating module when the water heating device is in a steady working state. The water heating device is judged to be in a steady working state by comparing the difference between the water outlet temperature and the target water temperature of the heating module with the difference threshold. After adjusting the current outlet water temperature of the water heating device to the target outlet water temperature, the device further includes: The first correspondence establishment module is used to obtain the current outlet flow rate of the water pump, establish a first correspondence between the current outlet flow rate of the water pump and the target driving parameters of the water pump, and update the correspondence between the outlet flow rate of the water pump and the driving parameters based on the first correspondence, or... The second correspondence establishment module is used to obtain the current heating power of the heating module, establish a second correspondence between the current heating power of the heating module and the target driving parameters of the heating module, and update the correspondence between the heating power of the heating module and the driving parameters of the heating module based on the second correspondence.

7. A water heating and output device, characterized in that, The heated water outlet device includes a water pump, a heating module, and a controller. The controller includes a memory and a processor, which are interconnected. The memory stores computer instructions, and the processor executes the computer instructions to perform the temperature control method of the heated water outlet device according to any one of claims 1 to 5.

8. The device according to claim 7, characterized in that, The heated water outlet equipment also includes a temperature acquisition device.

9. The device according to claim 7, characterized in that, The heating water device is a drinking water device that provides instant hot water.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer instructions for causing the computer to execute the temperature control method of the water heating device according to any one of claims 1 to 5.

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