Temperature control method and device for outlet water heating equipment and outlet water heating equipment

Abstract

The invention relates to the technical field of equipment control, and discloses a temperature control method and device for outlet water heating equipment and the outlet water heating equipment. The current outlet water end temperature of the outlet water heating equipment is obtained, and the temperature difference value between the outlet water target temperature and the current outlet water end temperature is calculated; 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 value, and then the target water outlet flow rate of the water pump or the target heating power of the heating module can be directly calculated based on the preset corresponding relation between the water pump water outlet flow rate and water pump driving parameters or the corresponding relation between the heating power of the heating module and the heating module driving parameters; target driving parameters of the water pump or driving parameters of the heating module are intelligently matched and determined, the water pump is controlled to work according to the target driving parameters, or the heating module is controlled to work according to the target driving parameters, so that the current water outlet end temperature of the water outlet heating equipment is adjusted to the water outlet target temperature, and the equipment temperature control precision is improved; and the adjustment time of the outlet water heating equipment in the operation process is shortened, so that the heating speed is increased, and the user experience is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of equipment control, and in particular to a temperature control method and device for outlet water heating equipment, and the outlet water heating equipment. Background Art

[0002] At present, instant drinking water equipment has entered the mainstream market. Instant temperature control technology has the technical characteristics of "instant heating". The temperature control accuracy and temperature control speed of hot water output are important evaluation dimensions of instant heating equipment. Therefore, how to improve the temperature control accuracy and temperature rise speed of instant heating equipment, and then improve user experience has become a pain point problem faced by the industry. Summary of the invention

[0003] In view of this, the present invention provides a temperature control method, device and water outlet heating equipment for a water outlet heating device to solve the problem of how to improve the temperature control accuracy and temperature rise rate of instant heating equipment, and then improve the user experience, which has become a pain point problem faced by the industry.

[0004] In a first aspect, the present invention provides a temperature control method for a water outlet heating device, wherein the water outlet heating device includes a water pump and a heating module, and the method includes: in response to a water outlet instruction of the device, obtaining a current water outlet temperature of the water outlet heating device, wherein the water outlet instruction of the device includes at least a target water outlet temperature; calculating a temperature difference between the target water outlet temperature and the current water outlet temperature, and calculating a target water outlet flow rate of the water pump or a target heating power of the heating module based on the temperature difference; determining a target water outlet flow rate of the water pump or a target heating power of the heating module based on a preset correspondence between a water outlet flow rate of the water pump and a water pump driving parameter, or a correspondence between the heating power of the heating module and a heating module driving parameter, and the target water outlet flow rate of the water pump or the target heating power of the heating module; and controlling the water pump or the heating module to operate based on the target water outlet flow rate of the water pump or the heating module, so as to adjust the current water outlet temperature of the water outlet heating device to the target water outlet temperature.

[0005] The temperature control method of the water outlet heating device provided by the present invention obtains the current water outlet temperature of the water outlet heating device, calculates the temperature difference between the target water outlet temperature and the current water outlet temperature, calculates the target water outlet flow rate of the water pump or the target heating power of the heating module based on the temperature difference, and then directly determines the target driving parameters of the water pump or the heating module based on the preset correspondence between the water outlet flow rate of the water pump and the water pump driving parameters, or the correspondence between the heating power of the heating module and the heating module driving parameters, intelligently matches and determines the target driving parameters of the water pump or the heating module driving parameters, controls the water pump to work with the target driving parameters, or controls the heating module to work with the target driving parameters, to adjust the current water outlet temperature of the water outlet heating device to the target water outlet temperature, thereby improving the temperature control accuracy of the equipment and reducing the adjustment time of the water outlet heating device during operation, thereby improving the heating speed and improving the user experience.

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

[0007] The present invention records the relationship between the heating power of the heating module-the driving parameters of the heating module and the water outlet flow rate-the water pump driving parameters during the historical working process of the whole machine according to the usage scenario of the whole machine, thereby reducing the problems of slow heating speed and untimely heating caused by adjusting the load driving parameters during the instant heating process.

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

[0009] The present invention obtains power and flow rate data in real time during the working process, fits the power driving curve and flow rate driving curve under the user's working condition, and calibrates the matched control relationship between power and flow, thereby ensuring the reliability of the solution.

[0010] In an optional embodiment, the control of the water pump or the heating module operation based on the water pump target driving parameters or the heating module target driving parameters includes: obtaining the current heating efficiency of the outlet water heating equipment; determining the current driving weight based on different driving weights corresponding to different heating efficiencies of the preset outlet water heating equipment and the current heating efficiency; adjusting the water pump target driving parameters or the heating module target driving parameters based on the current driving weight, and using the adjusted water pump target driving parameters or the heating module target driving parameters to control the water pump or the heating module operation.

[0011] The present invention determines the current driving weight based on the current heating efficiency of the outlet water heating equipment, and uses the driving weight to adjust the target driving parameters of the water pump or the target driving parameters of the heating module, and then 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 not only improves the accuracy of equipment temperature control, but also ensures the normal operation of the outlet water heating equipment.

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

[0013] The present invention is based on a preset water flow temperature rise relationship. The target heating power of the heating module is calculated by fixing the water outlet flow rate and the calculated temperature difference, or the target water outlet flow rate of the water pump is calculated by fixing the heating power of the heating module and the calculated temperature difference, thereby improving the accuracy of temperature control.

[0014] In an optional implementation, the water temperature rise relationship is:

[0015]

[0016] Where V represents the water flow rate of the water pump, t represents time, P represents the heating power of the heating module, η represents the heating efficiency, C represents the specific heat capacity of water, ρ represents the water density, δ T Indicates the temperature difference.

[0017] In an optional embodiment, the method further includes: collecting the water outlet temperature of the heating module through a temperature collection device; judging whether the difference between the water outlet temperature and the target water outlet temperature is less than a preset temperature difference threshold; if the difference between the water outlet temperature and the target water outlet temperature is less than the preset temperature difference threshold, determining that the water outlet heating device is in a steady state, executing the step of obtaining the current water outlet flow rate of the water pump, or executing the step of obtaining the current heating power of the heating module.

[0018] The present invention determines that the water outlet heating device is in a steady state by comparing the difference between the water outlet temperature of the heating module and the water outlet target temperature with a difference threshold, and then establishes a corresponding relationship between the water outlet flow rate and the water pump driving parameters, or a corresponding relationship between the heating power of the heating module and the heating module driving parameters, thereby improving the accuracy of the established relationship curve.

[0019] In a second aspect, the present invention provides a temperature control device for an outlet water heating device, wherein the outlet water heating device includes a water pump and a heating module, and the device includes: a water outlet temperature acquisition module, which is used to respond to a device water outlet instruction to acquire the current water outlet temperature of the outlet water heating device, and the device water outlet instruction at least includes a water outlet target temperature; a theoretical flow rate or heating power calculation module, which is used to calculate the temperature difference between the water outlet target temperature and the current water outlet temperature, and calculate the water pump target outlet water flow rate or the heating module target heating power based on the temperature difference; a water pump or heating module drive parameter calculation module, which is used to determine the water pump target drive parameter or the heating module drive parameter based on the corresponding relationship between the preset water pump outlet flow rate and the water pump drive parameter, or the corresponding relationship between the heating power of the heating module and the heating module drive parameter, and the water pump target outlet flow rate or the heating power of the heating module; a temperature control module, which is used to control the water pump or the heating module to work based on the water pump target drive parameter or the heating module target drive parameter, so as to adjust the current water outlet temperature of the outlet water heating device to the water outlet target temperature.

[0020] In a third aspect, the present invention provides a water heating device, which includes a water pump, a heating module and a controller. The controller includes a memory and a processor. The memory and the processor are communicatively connected to each other. Computer instructions are stored in the memory. The processor executes the computer instructions to execute the temperature control method of the water heating device of the first aspect or any corresponding embodiment thereof.

[0021] In an optional embodiment, the water heating equipment also includes a temperature collection device.

[0022] In an optional embodiment, the water heating and discharging equipment is a drinking water equipment that can heat water immediately after drinking.

[0023] In a fourth aspect, the present invention provides a computer-readable storage medium having computer instructions stored thereon, the computer instructions being used to enable a computer to execute the temperature control method for a water outlet heating device according to the first aspect or any corresponding embodiment thereof. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1is a flow chart of a method for controlling the temperature of an outlet water heating device according to an embodiment of the present invention;

[0026] Figure 2 is a flow chart of another temperature control method for water outlet heating equipment according to an embodiment of the present invention;

[0027] Figure 3 is an example diagram of a process for establishing a flow rate-water pump driving voltage curve according to an embodiment of the present invention;

[0028] Figure 4 is a flow chart of a temperature control method of another outlet water heating device according to an embodiment of the present invention;

[0029] Figure 5 is an example diagram of a temperature control process based on a flow rate-water pump driving voltage curve according to an embodiment of the present invention;

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

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

[0032] Figure 8 Schematic diagram of the hardware structure of the controller according to the embodiment of the present invention. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

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

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

[0036] In this embodiment, a method for controlling the temperature of a water outlet heating device is provided, which can be used in the above-mentioned controller. Figure 1 is a flow chart of a temperature control method of a water outlet heating device according to an embodiment of the present invention. Figure 1 As shown, the process includes the following steps:

[0037] Step S101, in response to a water outlet instruction of a device, obtaining a current water outlet temperature of a water outlet heating device.

[0038] The device water outlet instruction at least includes the target water outlet temperature.

[0039] The embodiment of the present invention does not limit the water outlet heating device, which can be a water heater, water dispenser or other device with water outlet heating. Taking the instant drinking and hot water purifier as an example, the user can select the hot water of the required target temperature through the device screen. After the device responds to the instruction, it starts heating, heats the water 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 DC water pump and a water outlet pipeline. The heating module can be set according to the type of the water outlet heating device, etc., and is generally a heating element. As an example only, the heating system controls the operation of the heating element and the DC water pump to pump the flowing water into the heating element, and the water flows out after heating.

[0040] The controller of the water outlet heating device in the embodiment of the present invention responds to the water outlet instruction of the device, that is, before the water outlet device starts heating, it can first obtain the current water outlet temperature of the water outlet heating device through a temperature collection device such as a temperature sensor, a temperature sensing bag, etc. arranged at the water outlet of the heating element, as an example only.

[0041] Step S102, calculating the temperature difference between the target water outlet temperature and the current water outlet temperature, and calculating the target water outlet flow rate of the water pump or the target heating power of the heating module based on the temperature difference.

[0042] The embodiment of the present invention can calculate the temperature difference between the target water outlet temperature and the current water outlet temperature based on the target water outlet temperature selected by the user, wherein, because when the heating power of the heating module is fixed, the slower the water outlet flow rate per unit time, that is, the smaller the water flow rate, the higher the corresponding heating temperature, it is possible to consider in advance based on multiple experiments to improve the temperature rise adjustment speed and accuracy to set the temperature difference and the corresponding database of the water outlet flow rate of the water pump, or, when the water outlet flow rate of the water pump is constant, the higher the heating power of the heating module, the faster the corresponding heating temperature rises, it is also possible to consider in advance based on multiple experiments to improve the temperature rise adjustment speed and accuracy to set the temperature difference and the corresponding database of the heating power of the heating module, etc. After determining the temperature difference, the target water outlet flow rate of the water pump or the target heating power of the heating module can be searched and determined from the preset database, as an example only.

[0043] Step S103, based on the preset correspondence between the water pump outlet flow rate and the water pump driving parameters, or the correspondence between the heating power of the heating module and the heating module driving parameters, as well as the water pump target water outlet flow rate or the target heating power of the heating module, determine the water pump target driving parameters or the heating module driving parameters.

[0044] The embodiments of the present invention can pre-set the correspondence between the water pump outlet flow rate and the water pump driving parameters, or the correspondence between the heating power of the heating module and the heating module driving parameters based on the models and properties of the water pump and the heating module, as an example only, and then the water pump target driving parameters can be determined by looking up the correspondence according to the determined water pump target water outlet flow rate, or the target driving parameters of the heating module can be determined by looking up the correspondence according to the determined target heating power of the heating module, as an example only.

[0045] Step S104, based on the water pump target driving parameter or the heating module target driving parameter, the water pump or the heating module is controlled to operate, so as to adjust the current water outlet temperature of the water outlet heating device to the water outlet target temperature.

[0046] After determining the target driving parameters of the water pump or the target driving parameters of the heating module, the embodiment of the present invention can control the operation of the water pump based on the target driving parameters of the water pump, or control the operation of the heating module based on the target driving parameters of the heating module, so as to adjust the current water outlet temperature of the water outlet heating device to the target water outlet temperature, and the user can use water.

[0047] The temperature control method of the water outlet heating device provided in the present embodiment obtains the current water outlet temperature of the water outlet heating device, calculates the temperature difference between the target water outlet temperature and the current water outlet temperature, calculates the target water outlet flow rate of the water pump or the target heating power of the heating module based on the temperature difference, and then directly determines the target water pump driving parameters or the heating module driving parameters based on the preset correspondence between the water outlet flow rate of the water pump and the water pump driving parameters, or the correspondence between the heating power of the heating module and the heating module driving parameters, intelligently matches and determines the target driving parameters of the water pump or the heating module, controls the water pump to work with the target driving parameters, or controls the heating module to work with the target driving parameters, to adjust the current water outlet temperature of the water outlet heating device to the target water outlet temperature, thereby improving the temperature control accuracy of the equipment and reducing the adjustment time of the water outlet heating device during operation, thereby improving the heating speed and improving the user experience.

[0048] In this embodiment, a method for controlling the temperature of a water outlet heating device is provided, which can be used in the above-mentioned controller. Figure 2 is a flow chart of a temperature control method of a water outlet heating device according to an embodiment of the present invention. Figure 2 As shown, the process includes the following steps:

[0049] Step S201, in response to the device water outlet instruction, obtain the current water outlet temperature of the water outlet heating device. The device water outlet instruction at least includes the water outlet target temperature. For details, please refer to Figure 1 Step S101 of the illustrated embodiment will not be described in detail here.

[0050] Step S202, calculate the temperature difference between the target water outlet temperature and the current water outlet temperature, and calculate the target water outlet flow rate of the water pump or the target heating power of the heating module based on the temperature difference. Figure 1 Step S102 of the illustrated embodiment will not be described in detail here.

[0051] Step S203, based on the preset correspondence between the water pump outlet flow rate and the water pump drive parameter, or the correspondence between the heating power of the heating module and the heating module drive parameter, and the water pump target water pump outlet flow rate or the heating module target heating power, determine the water pump target drive parameter or the heating module drive parameter. For details, please refer to Figure 1 Step S103 of the illustrated embodiment will not be described in detail here.

[0052] Specifically, the correspondence between the preset water pump outlet flow rate and the water pump driving parameters is obtained by fitting the historical water pump outlet flow rates and the corresponding water pump driving parameters obtained when the historical water outlet heating equipment is in a steady-state operation, or the correspondence between the heating power of the heating module and the heating module driving parameters is obtained by fitting the historical heating powers and the corresponding heating module driving parameters obtained when the historical water outlet heating equipment is in a steady-state operation.

[0053] like Figure 3 As shown, the correspondence between the water outlet flow rate of the water pump and the water pump driving parameters of the embodiment of the present invention is when the current historical water outlet heating device is in a steady-state operation, wherein the judgment condition when the heating device is in a steady-state operation can be that the current water outlet temperature is adjusted to the target water outlet temperature, and when the device is discharging water, for example only, the water outlet flow rate value fed back by the flow feedback device can be obtained, and the driving parameters of the DC water pump in the control system can also be obtained, wherein the driving parameters are not limited, and can be driving voltage and driving power, etc. Taking the driving voltage as an example, the correspondence between the water outlet flow rate value and the driving voltage of the DC water pump can be established, and the established correspondence between the water flow rate value and the driving voltage of the DC water pump can be stored in a data storage chip, such as a ROM memory, and then fitted with the correspondence between the water outlet flow rate and the DC water pump stored historically in the ROM memory to obtain the correspondence between the water outlet flow rate of the water pump and the water pump driving parameters, wherein the correspondence can be represented in the form of a curve graph or a straight line graph.

[0054] The correspondence between the heating power of the heating module and the driving parameters of the heating module can also be obtained by obtaining the heating power of the heating module when the current historical water outlet heating equipment is in a steady-state operation. For example, the heating power data can be obtained through voltage and current detection circuits, etc., as an example only, and then the driving parameters of the heating module can be obtained, wherein the driving parameters of the heating module can be the heating element driving duty cycle, as an example only, and then the correspondence between the heating power and the driving parameters of the heating module can be established and stored in a data storage chip for fitting processing, so as to obtain the correspondence between the heating power and the driving parameters of the heating module under the operating conditions of the entire machine.

[0055] The present invention records the relationship between the heating power of the heating module-the driving parameters of the heating module and the water outlet flow rate-the water pump driving parameters during the historical working process of the whole machine according to the usage scenario of the whole machine, thereby reducing the problems of slow heating speed and untimely heating caused by adjusting the load driving parameters during the instant heating process.

[0056] Step S204: Based on the target drive parameters of the water pump or the target drive parameters of the heating module, the water pump or the heating module is controlled to operate, so as to adjust the current water outlet temperature of the water outlet heating device to the target water outlet temperature. Figure 1 Step S104 of the illustrated embodiment will not be described in detail here.

[0057] Step S205, collecting the water outlet temperature of the heating module through the temperature collection device; judging whether the difference between the water outlet temperature and the water outlet target temperature is less than the preset temperature difference threshold; if the difference between the water outlet temperature and the water outlet target temperature is less than the preset temperature difference threshold, it is determined that the water outlet heating device is in a steady state.

[0058] The embodiment of the present invention can collect the water outlet temperature of the heating module through the temperature collection device in real time after controlling the water pump or the heating module to work based on the water pump target driving parameters or the heating module target driving parameters, and judge whether the difference between the water outlet temperature and the water outlet target temperature is less than the preset temperature difference threshold, |T target temperature - T water outlet temperature |≤x℃, where x represents the preset temperature difference threshold. If the difference between the water outlet temperature and the water outlet target temperature is not less than the preset temperature difference threshold, continue to return to collect the water outlet temperature of the heating module; if the difference between the water outlet temperature and the water outlet target temperature is less than the preset temperature difference threshold, it can be determined that the water outlet heating equipment is in a steady state.

[0059] The present invention determines that the water outlet heating device is in a steady state by comparing the difference between the water outlet temperature of the heating module and the water outlet target temperature with a difference threshold, and then establishes a corresponding relationship between the water outlet flow rate and the water pump driving parameters, or a corresponding relationship between the heating power of the heating module and the heating module driving parameters, thereby improving the accuracy of the established relationship curve.

[0060] Step S206, obtain the current water outlet flow rate of the water pump, establish a first corresponding relationship between the current water outlet flow rate of the water pump and the target driving parameters of the water pump, and update the corresponding relationship between the water outlet flow rate of the water pump and the water pump driving parameters based on the first corresponding relationship, or obtain the current heating power of the heating module, establish a second corresponding relationship between the current heating power of the heating module and the target driving parameters of the heating module, and update the corresponding relationship between the heating power of the heating module and the heating module driving parameters based on the second corresponding relationship.

[0061] When the embodiment of the present invention determines for the first time that the water outlet heating equipment is in a steady state of operation, the current water outlet flow rate of the water pump can be obtained through the flow feedback device, and a first corresponding relationship between the current water outlet flow rate of the water pump and the target driving parameters of the water pump can be established. The first corresponding relationship between the current water outlet flow rate of the water pump and the target driving parameters of the water pump can be stored in a data storage chip to update the corresponding relationship between the current water outlet flow rate of the water pump and the water pump driving parameters.

[0062] When it is determined for the first time that the water heating equipment is in a steady state of operation, the current heating power of the heating module can be obtained through the voltage and current detection circuit, and a second corresponding relationship between the current heating power of the heating module and the target driving parameters of the heating module can be established. The second corresponding relationship between the current heating power of the heating module and the target driving parameters of the heating module can be stored in the data storage chip to update the corresponding relationship between the heating power of the current heating module and the driving parameters of the heating module.

[0063] The present invention obtains power and flow rate data in real time during the working process, fits the power driving curve and flow rate driving curve under the user's working condition, and calibrates the matched control relationship between power and flow, thereby ensuring the reliability of the solution.

[0064] In this embodiment, a temperature control method for a water outlet heating device is provided, which can be used in the above-mentioned mobile terminal, such as a mobile phone, a tablet computer, etc. Figure 4 is a flow chart of a temperature control method of a water outlet heating device according to an embodiment of the present invention. Figure 4 As shown, the process includes the following steps:

[0065] Step S401, in response to the device water outlet instruction, obtain the current water outlet temperature of the water outlet heating device. The device water outlet instruction at least includes the water outlet target temperature. For details, please refer to Figure 2 Step S201 of the illustrated embodiment will not be described in detail here.

[0066] Step S402, calculating the temperature difference between the target water outlet temperature and the current water outlet temperature, and calculating the target water outlet flow rate of the water pump or the target heating power of the heating module based on the temperature difference.

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

[0068] The embodiment of the present invention can establish a water flow temperature rise relationship based on the fixed water outlet flow rate of the water pump, the temperature difference and the heating power of the heating module in advance. Calculating the target water outlet flow rate of the water pump based on the temperature difference may include inputting the preset fixed heating power of the heating module and the temperature difference into the water flow temperature rise relationship to obtain the target water outlet flow rate of the water pump; calculating the target heating power of the heating module based on the temperature difference may include inputting the preset fixed water outlet flow rate of the water pump and the temperature difference into the water flow temperature rise relationship to obtain the target heating power of the heating module.

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

[0070]

[0071] Where V represents the water flow rate of the water pump, t represents time, P represents the heating power of the heating module, η represents the heating efficiency, C represents the specific heat capacity of water, ρ represents the water density, δ T Indicates the temperature difference.

[0072] The present invention is based on a preset water flow temperature rise relationship. The target heating power of the heating module is calculated by fixing the water outlet flow rate and the calculated temperature difference, or the target water outlet flow rate of the water pump is calculated by fixing the heating power of the heating module and the calculated temperature difference, thereby improving the accuracy of temperature control.

[0073] Step S403, based on the preset correspondence between the water pump outlet flow rate and the water pump drive parameter, or the correspondence between the heating power of the heating module and the heating module drive parameter, and the water pump target water pump outlet flow rate or the heating module target heating power, determine the water pump target drive parameter or the heating module drive parameter. For details, please refer to Figure 2 Step S203 of the illustrated embodiment will not be described in detail here.

[0074] Step S404, based on the water pump target driving parameter or the heating module target driving parameter, the water pump or the heating module is controlled to operate, so as to adjust the current water outlet temperature of the water outlet heating device to the water outlet target temperature.

[0075] Specifically, the above step S404 includes:

[0076] Step S4041, obtaining the current heating efficiency of the outlet water heating device.

[0077] Step S4042, determining the current driving weight based on the different driving weights corresponding to the different heating efficiencies of the preset water outlet heating equipment and the current heating efficiency.

[0078] Step S4043, adjusting the target driving parameters of the water pump or the heating module based on the current driving weight, and using 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.

[0079] After determining the target driving parameters of the water pump or the driving parameters of the heating module, the embodiment of the present invention can first obtain the current heating efficiency of the water outlet heating device, and determine the current driving weight based on the different driving weights corresponding to the different heating efficiencies of the preset water outlet heating device and the current heating efficiency. For example, if the current water outlet heating device is in a cold start state, that is, it has been left unused for a long time, the corresponding driving weight is small, such as 50%. That is, the higher the heating efficiency, the larger the corresponding driving weight. Then, the target driving parameters of the water pump or 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] The present invention determines the current driving weight based on the current heating efficiency of the outlet water heating equipment, and uses the driving weight to adjust the target driving parameters of the water pump or the target driving parameters of the heating module, and then 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 not only improves the accuracy of equipment temperature control, but also ensures the normal operation of the outlet water heating equipment.

[0081] In a specific embodiment, Figure 5 As shown, when the instant heating device starts heating, the current water outlet temperature is obtained, and the temperature difference between the current water outlet temperature and the target water outlet temperature is calculated, the temperature difference and parameter values ​​such as the preset fixed heating power are input into the water heating formula, the target water outlet flow rate of the water pump is calculated, and then the target water outlet flow rate of the water pump is substituted into the flow rate-water pump drive voltage curve to determine the target drive voltage of the water pump, and the target drive voltage of the water pump is used to control the operation of the water pump, start the instant heating device heating, and start the closed-loop control. The above is a detailed process for adjusting the water pump drive parameters, and the process for adjusting the drive parameters of the heating module will not be repeated here.

[0082] In this embodiment, a water heating device is also provided. Figure 6 As shown, the heating water outlet device includes a water pump, a heating module and a controller. The controller executes the temperature control method of the heating water outlet device described in the above embodiment, which will not be repeated here.

[0083] Specifically, the water heating device also includes a temperature collection device for collecting the temperature of the water outlet.

[0084] Specifically, the water heating and discharging equipment is a drinking water equipment that heats water immediately after drinking.

[0085] In this embodiment, a temperature control device for a water outlet heating device is also provided, which is used to implement the above-mentioned embodiments and preferred embodiments, and will not be repeated hereafter. As used below, the term "module" may be a combination of software and / or hardware that implements a predetermined function. Although the devices described in the following embodiments are preferably implemented in software, the implementation of hardware, or a combination of software and hardware, is also possible and conceivable.

[0086] This embodiment provides a temperature control device for a water outlet heating device, wherein the water outlet heating device includes a water pump and a heating module. Figure 7 As shown, it includes: a water outlet temperature acquisition module 701, which is used to respond to the device water outlet instruction and obtain the current water outlet temperature of the water outlet heating device, and the device water outlet instruction at least includes the water outlet target temperature; a theoretical flow rate or heating power calculation module 702, which is used to calculate the temperature difference between the water outlet target temperature and the current water outlet temperature, and calculate the water pump target water outlet flow rate or the heating module target heating power based on the temperature difference; a water pump or heating module drive parameter calculation module 703, which is used to determine the water pump target drive parameter or the heating module drive parameter based on the preset correspondence between the water pump outlet flow rate and the water pump drive parameter, or the correspondence between the heating power of the heating module and the heating module drive parameter, and the water pump target water outlet flow rate or the heating power of the heating module; a temperature control module 704, which is used to control the water pump or the heating module to work based on the water pump target drive parameter or the heating module target drive parameter, so as to adjust the current water outlet temperature of the water outlet heating device to the water outlet target temperature.

[0087] In some optional embodiments, the correspondence between a preset water pump outlet flow rate and a water pump driving parameter is obtained by fitting all historical water pump outlet flow rates and corresponding water pump driving parameters obtained when the historical water outlet heating device is in a steady-state operation, or the 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 modules and corresponding heating module driving parameters obtained when the historical water outlet heating device is in a steady-state operation.

[0088] In some optional embodiments, after adjusting the current water outlet temperature of the water outlet heating device to the target water outlet temperature, the temperature control device of the water outlet heating device also includes: a first correspondence establishment module, used to obtain the current water outlet flow rate of the water pump, establish a first correspondence between the current water outlet flow rate of the water pump and the target driving parameters of the water pump, and update the correspondence between the water outlet flow rate of the water pump and the water pump driving parameters based on the first correspondence; or, a second correspondence establishment module, 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 heating module driving parameters based on the second correspondence.

[0089] In some optional embodiments, the temperature control module 704 includes: a heating efficiency acquisition unit, used to acquire the current heating efficiency of the water outlet heating device; a driving weight determination unit, used to determine the current driving weight based on different driving weights corresponding to different heating efficiencies of the preset water outlet heating device, and the current heating efficiency; a parameter control unit, used to adjust the water pump target driving parameters or the heating module target driving parameters based on the current driving weight, and use the adjusted water pump target driving parameters or the heating module target driving parameters to control the operation of the water pump or the heating module.

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

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

[0092]

[0093] Where V represents the water flow rate of the water pump, t represents time, P represents the heating power of the heating module, η represents the heating efficiency, C represents the specific heat capacity of water, ρ represents the water density, δ T Indicates the temperature difference.

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

[0095] The further functional description of each of the above modules and units is the same as that of the above corresponding embodiments and will not be repeated here.

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

[0097] The embodiment of the present invention further provides a controller having the above Figure 7 The temperature control device of the outlet water heating device is shown.

[0098] See also Figure 8 , Figure 8 is a schematic diagram of the structure of a controller provided by an optional embodiment of the present invention, such as Figure 8 As shown, the controller includes: one or more processors 10, a memory 20, and interfaces for connecting various components, including high-speed interfaces and low-speed interfaces. The various components are connected to each other using different buses for communication, and can be installed on a common mainboard or installed in other ways as needed. The processor can process instructions executed in the controller, including instructions stored in or on the memory to display graphical information of the GUI on an external input / output device (such as a display device coupled to the interface). In some optional embodiments, if necessary, multiple processors and / or multiple buses can be used together with multiple memories and multiple memories. Similarly, multiple controllers can be connected, and each device provides some necessary operations (for example, as a server array, a group of blade servers, or a multi-processor system). Figure 8 A processor 10 is taken as an example.

[0099] The processor 10 may be a central processing unit, a network processor or a combination thereof. The processor 10 may further include a hardware chip. The hardware chip may be a dedicated integrated circuit, a programmable logic device or a combination thereof. The programmable logic device may be a complex programmable logic device, a field programmable gate array, a general purpose array logic or any combination thereof.

[0100] The memory 20 stores instructions executable by at least one processor 10, so that at least one processor 10 executes the method shown in the above embodiment.

[0101] The memory 20 may include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application required by at least one function; the data storage area may store data created according to the use of the controller, etc. In addition, the memory 20 may include a high-speed random access memory, and may also include a non-transient memory, such as at least one disk storage device, a flash memory device, or other non-transient solid-state storage device. In some optional embodiments, the memory 20 may optionally include a memory remotely arranged relative to the processor 10, and these remote memories may be connected to the controller via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0102] The memory 20 may include a volatile memory, such as a random access memory; the memory may also include a non-volatile memory, such as a flash memory, a hard disk or a solid state drive; the memory 20 may also include a combination of the above types of memory.

[0103] The controller also 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 may be connected via a bus or other means. Figure 8 The example of connecting through bus is taken in the following.

[0104] The input device 30 can receive input digital or character information and generate key signal input related to the user settings and function control of the controller, such as a touch screen, a keypad, a mouse, a track pad, a touch pad, an indicator bar, one or more mouse buttons, a trackball, a joystick, etc. The output device 40 may include a display device, an auxiliary lighting device (e.g., an LED) and a tactile feedback device (e.g., a vibration motor), etc. The above-mentioned display device includes but is not limited to a liquid crystal display, a light emitting diode, a display and a plasma display. In some optional embodiments, the display device can be a touch screen.

[0105] The embodiment of the present invention also provides a computer-readable storage medium. The method according to the embodiment of the present invention can be implemented in hardware, firmware, or can be implemented as a computer code that can be recorded in a storage medium, or can be implemented as a computer code that is originally stored in a remote storage medium or a non-temporary machine-readable storage medium and will be stored in a local storage medium through a network download, so that the method described herein can be stored in such software processing on a storage medium using a general-purpose computer, a dedicated processor, or programmable or dedicated hardware. Among them, the storage medium can be a magnetic disk, an optical disk, a read-only storage memory, a random access memory, a flash memory, a hard disk or a solid-state hard disk, etc.; further, the storage medium can also include a combination of the above types of memories. It can be understood that a computer, a processor, a microprocessor controller, or programmable hardware includes a storage component that can store or receive software or computer code. When the software or computer code is accessed and executed by a computer, a processor, or hardware, the method shown in the above embodiment is implemented.

[0106] Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A temperature control method for an outlet water heating device, the outlet water heating device comprising a water pump and a heating module, characterized in that: The method comprises: In response to a device water outlet instruction, obtaining a current water outlet temperature of the water outlet heating device, wherein the device water outlet instruction at least includes a water outlet target temperature; Calculating the temperature difference between the target water outlet temperature and the current water outlet temperature, and calculating the target water outlet 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 outlet flow rate of the water pump and the water pump driving parameter, or the correspondence between the heating power of the heating module and the heating module driving parameter, and the target water outlet flow rate of the water pump or the target heating power of the heating module, determine the target driving parameter of the water pump or the driving parameter of the heating module; The water pump or the heating module is controlled to operate based on the water pump target driving parameter or the heating module target driving parameter to adjust the current water outlet temperature of the water outlet heating device to the water outlet target temperature.

2. The method according to claim 1, characterized in that: The preset correspondence between the water outlet flow rate of the water pump and the water pump driving parameter is obtained by fitting all the historical water outlet flow rates of the water pump and the corresponding water pump driving parameters obtained when the water outlet heating device is in a steady state, or, The corresponding relationship between the heating power of the heating module and the driving parameters of the heating module is obtained by fitting the heating powers of all the heating modules and the corresponding driving parameters of the heating modules obtained historically when the water outlet heating device is in a steady state.

3. The method according to claim 2, characterized in that After adjusting the current water outlet temperature of the water outlet heating device to the water outlet target temperature, the method further includes: Acquire the current water flow rate of the water pump, establish a first corresponding relationship between the current water flow rate of the water pump and the target driving parameter of the water pump, and update the corresponding relationship between the water flow rate of the water pump and the driving parameter of the water pump based on the first corresponding relationship, or, The current heating power of the heating module is acquired, a second corresponding relationship between the current heating power of the heating module and the target driving parameter of the heating module is established, and the corresponding relationship between the heating power of the heating module and the driving parameter of the heating module is updated based on the second corresponding relationship.

4. The method according to claim 1, characterized in that: The step of controlling the water pump or the heating module to operate based on the water pump target driving parameter or the heating module target driving parameter comprises: Get the current heating efficiency of the outlet water heating equipment; Determine the current driving weight based on different driving weights corresponding to different heating efficiencies of the preset water outlet heating equipment and the current heating efficiency; The water pump target driving parameter or the heating module target driving parameter is adjusted based on the current driving weight, and the water pump or the heating module is controlled to work using the adjusted water pump target driving parameter or the heating module target driving parameter.

5. The method according to claim 1, characterized in that The calculating of the target water outlet flow rate of the water pump based on the temperature difference comprises: inputting the preset fixed heating power and temperature difference of the heating module into the flowing water temperature rise relationship formula to obtain the target water outlet flow rate of the water pump, wherein the flowing water temperature rise relationship formula represents the corresponding relationship between the heating power of the heating module, the temperature difference and the water 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 a preset fixed water outlet flow rate of the water pump and the temperature difference into a water temperature rise relationship to obtain the target heating power of the heating module.

6. The method according to claim 5, characterized in that The water temperature rise relationship is: Where V represents the water flow rate of the water pump, t represents time, P represents the heating power of the heating module, η represents the heating efficiency, C represents the specific heat capacity of water, ρ represents the water density, δ T Indicates the temperature difference.

7. The method according to claim 3, characterized in that The method further comprises: The temperature at the water outlet of the heating module is collected by a temperature collection device; Determine whether the difference between the water outlet temperature and the water outlet target temperature is less than a preset temperature difference threshold; If the difference between the water outlet temperature and the target water outlet temperature is less than the preset temperature difference threshold, it is determined that the water outlet heating device is in a steady state, and the step of obtaining the current water outlet flow rate of the water pump is executed, or the step of obtaining the current heating power of the heating module is executed.

8. 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 comprises: A water outlet temperature acquisition module, used to acquire the current water outlet temperature of the water outlet heating device in response to a device water outlet instruction, wherein the device water outlet instruction at least includes a water outlet target temperature; A theoretical flow rate or heating power calculation module, used to calculate the temperature difference between the target water outlet temperature and the current water outlet temperature, and calculate the target water outlet flow rate of the water pump or the target heating power of the heating module based on the temperature difference; A water pump or heating module driving parameter calculation module, used to determine the water pump target driving parameter or the heating module driving parameter based on a preset corresponding relationship between the water pump outlet flow rate and the water pump driving parameter, or a corresponding relationship between the heating power of the heating module and the heating module driving parameter, and the water pump target water pump outlet flow rate or the 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 water pump target driving parameter or the heating module target driving parameter to adjust the current water outlet temperature of the water outlet heating device to the water outlet target temperature.

9. A water heating device, characterized in that: The water heating device includes a water pump, a heating module and a controller. The controller includes a memory and a processor. The memory and the processor are communicatively connected to each other. Computer instructions are stored in the memory. The processor executes the computer instructions to execute the temperature control method of the water heating device described in any one of claims 1 to 7.

10. The device according to claim 9, characterized in that The water heating and outlet equipment also includes a temperature collection device.

11. The device according to claim 9, characterized in that The water heating and discharging equipment is a drinking water equipment that can heat water immediately after drinking.

12. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer instructions, and the computer instructions are used to enable a computer to execute the temperature control method of the water outlet heating device according to any one of claims 1 to 7.

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