Instant water path system, temperature-adjustable instant water dispenser and water outlet control method

Abstract

The application provides a quick heating water path system, a temperature-adjusting quick heating type drinking water machine and a control method, relates to the technical field of water purification equipment, and comprises a water outlet temperature collection module arranged at the water outlet of a quick heating pipe and a water outlet flow rate collection module arranged between a water pump and the quick heating pipe or at the water outlet of the quick heating pipe. During the operation of the quick heating water path system, the target water outlet flow rate of the water pump is first controlled in feedback according to the target water outlet flow rate of the water pump and the actual water outlet flow rate collected by the water outlet flow rate collection module, and when the quick heating water path system meets the feedback switching condition, the target water outlet flow rate of the water pump is controlled in feedback according to the target water outlet water temperature and the actual water outlet water temperature collected by the water outlet water temperature collection module. The quick heating water path system can quickly approach the target water outlet water temperature after starting to work and then reach the target water outlet water temperature in a short time, so that the water outlet water temperature rising efficiency of the quick heating water path system can be improved, and the user experience of the temperature-adjusting quick heating type drinking water machine can be improved.

Description

Technical Field

[0001] This application relates to the field of water purification equipment technology, and in particular to an instant hot water circuit system, a temperature-adjustable instant hot water dispenser, and a water output control method. Background Technology

[0002] The instant hot water circuit system is mainly used to regulate the outlet water temperature and is an important component of temperature-controlled instant hot water dispensers. Its main components often have working errors, such as the working error of the water pump reaching ±20% and the working error of the instant heating pipe reaching ±10%. Therefore, in order to ensure the safe operation of the instant hot water circuit system, a large margin is reserved in the outlet water temperature control process. This results in a longer time for the outlet water temperature of the instant hot water circuit system to rise to the target outlet water temperature, and the accuracy and stability of the outlet water temperature control of the instant hot water circuit system are not high. Summary of the Invention

[0003] This application provides an instant hot water circuit system, a temperature-adjustable instant hot water dispenser, and a water outlet control method to solve the problems of low efficiency in raising the outlet water temperature and low accuracy and stability of water temperature control in existing instant hot water circuit systems. Specifically, the technical solution provided by this application is as follows:

[0004] On one hand, this application provides an instant hot water circuit system, including a water pump, an instant heating pipe, a first inlet water temperature acquisition module, an outlet water flow rate acquisition module, and an outlet water temperature acquisition module; the inlet of the instant heating pipe is connected to the outlet of the water pump through a first inlet pipe; the first inlet water temperature acquisition module is installed on the first inlet pipe; the outlet water flow rate acquisition module is installed on the first inlet pipe or on the outlet pipe connected to the outlet of the instant heating pipe; the outlet water temperature acquisition module is installed on the outlet pipe connected to the outlet of the instant heating pipe.

[0005] In one possible implementation, the hot water circuit system further includes a second inlet water temperature acquisition module; the second inlet water temperature acquisition module is installed on the second inlet pipe connected to the inlet of the water pump.

[0006] In one possible implementation, the first inlet water temperature acquisition module includes a first thermistor; the second inlet water temperature acquisition module includes a second thermistor; and the outlet water temperature acquisition module includes a third thermistor.

[0007] In one possible implementation, the effluent flow rate acquisition module includes a flow meter.

[0008] On the other hand, this application provides a temperature-controlled instant hot water dispenser, including a water tank, a water outlet control device, and the aforementioned instant hot water circuit system; the water outlet of the water tank is connected to the first inlet pipe connected to the water inlet of the water pump in the instant hot water circuit system; the water outlet control device is electrically connected to the water pump, the instant heating pipe, the first inlet water temperature acquisition module, the second inlet water temperature acquisition module, the outlet water flow rate acquisition module, and the outlet water temperature acquisition module in the instant hot water circuit system.

[0009] On the other hand, this application provides a water dispensing control method for a temperature-controlled instant hot water dispenser, applied to the water dispensing control device in the aforementioned temperature-controlled instant hot water dispenser, comprising:

[0010] Upon receiving a water outlet command, the target water outlet temperature corresponding to the water outlet command is determined, and the current water inlet temperature of the instant hot water circuit system is determined based on the first water inlet temperature collected by the first water inlet temperature acquisition module.

[0011] Based on the current inlet water temperature and the target outlet water temperature, determine the target heating power of the instantaneous heating pipe and the initial outlet water flow rate of the water pump.

[0012] After controlling the instant heating pipe to operate according to the target heating power and controlling the water pump to operate according to the initial water flow rate, the instant hot water circuit system enters the first feedback control stage.

[0013] In the first feedback control phase, a first feedback control operation is periodically executed. The first feedback control operation includes: determining a first compensated outlet flow rate of the water pump based on the first target outlet flow rate of the water pump and the actual outlet flow rate of the water pump collected by the outlet flow rate acquisition module; adjusting the first target outlet flow rate of the water pump based on the first compensated outlet flow rate, and controlling the water pump to operate according to the adjusted first target outlet flow rate. Specifically, when the first feedback control operation is executed for the first time, the first target outlet flow rate is the initial outlet flow rate; when the first feedback control operation is not executed for the first time, the first target outlet flow rate is the adjusted first target outlet flow rate obtained in the previous execution of the first feedback control operation.

[0014] When the instant hot water circuit system meets the feedback switching conditions, the instant hot water circuit system is controlled to enter the second feedback control stage.

[0015] In the second feedback control phase, a second feedback control operation is periodically executed. The second feedback control operation includes: determining the second compensated outlet flow rate of the water pump based on the target outlet water temperature and the actual outlet water temperature collected by the outlet water temperature acquisition module; adjusting the second target outlet flow rate of the water pump based on the second compensated outlet flow rate, and controlling the water pump to operate according to the adjusted second target outlet flow rate. Specifically, when the second feedback control operation is executed for the first time, the second target outlet flow rate is the adjusted first target outlet flow rate obtained when the first feedback control operation was executed for the last time. When the second feedback control operation is not executed for the first time, the second target outlet flow rate is the adjusted second target outlet flow rate obtained when the second feedback control operation was executed for the previous time.

[0016] When the instant hot water circuit system meets the conditions for stopping water output, control the water pump and instant heating pipe to stop operating.

[0017] In one possible implementation, determining the current inlet water temperature of the instant hot water circuit system based on the first inlet water temperature acquired by the first inlet water temperature acquisition module includes:

[0018] The first inlet water temperature collected by the first inlet water temperature acquisition module is determined as the current inlet water temperature of the instant hot water circuit system;

[0019] or;

[0020] Based on the first inlet water temperature collected by the first inlet water temperature acquisition module and the second inlet water temperature collected by the second inlet water temperature acquisition module, the current inlet water temperature of the instant hot water circuit system is determined.

[0021] In one possible implementation, the water dispensing control method for the temperature-controlled instant hot water dispenser provided in this application further includes:

[0022] In the second water output control stage, when the velocity difference between the actual water output velocity of the water pump and the second target water output velocity is greater than or equal to the velocity difference threshold, the third compensation water output velocity of the water pump is determined based on the actual water output velocity and the second target water output velocity. The second target water output velocity of the water pump is adjusted based on the third compensation water output velocity, and the water pump is controlled to operate according to the adjusted second target water output velocity.

[0023] In one possible implementation, the water dispensing control method for the temperature-controlled instant hot water dispenser provided in this application further includes:

[0024] Based on the first inlet water temperature collected by the first inlet water temperature acquisition module, the inlet water temperature fluctuation of the instant hot water circuit system is detected; when it is determined that the inlet water temperature fluctuation range of the instant hot water circuit system is not lower than the fluctuation threshold, the first inlet water temperature collected by the first inlet water temperature acquisition module is determined as the current inlet water temperature of the instant hot water circuit system; based on the current inlet water temperature and the target outlet water temperature of the instant hot water circuit system, the target heating power of the instant heating pipe is re-determined, and the instant heating pipe is controlled to operate according to the re-determined target heating power.

[0025] In one possible implementation, determining that the instantaneous hot water circuit system meets the feedback switching conditions includes:

[0026] After determining that the first feedback control phase lasts for a first duration, it is determined that the instant hot water circuit system meets the feedback switching conditions.

[0027] or;

[0028] When the temperature difference between the target outlet water temperature and the actual outlet water temperature collected by the outlet water temperature acquisition module is less than or equal to the temperature difference threshold, the instant hot water circuit system is deemed to meet the feedback switching condition.

[0029] The beneficial effects of this application are as follows:

[0030] This application installs a water temperature acquisition module on the outlet pipe connected to the outlet of the instant heating pipe, and an outlet flow rate acquisition module on the first inlet pipe between the inlet of the instant heating pipe and the outlet of the water pump, or on the outlet pipe connected to the outlet of the instant heating pipe. During the operation of the instant hot water system, the target outlet flow rate of the water pump is first controlled by feedback based on the target outlet flow rate of the water pump and the actual outlet flow rate acquired by the outlet flow rate acquisition module. When the instant hot water system meets the feedback switching conditions, the target outlet flow rate of the water pump is controlled by feedback based on the target outlet water temperature and the actual outlet water temperature acquired by the outlet water temperature acquisition module. This allows the instant hot water system to quickly approach the target outlet water temperature after starting up and reach the target outlet water temperature in a short time. This enables rapid heating and precise control of the outlet water temperature of the instant hot water system, improving the efficiency of outlet water temperature heating and the accuracy and stability of outlet water temperature control, thereby improving the user experience of the instant hot water dispenser.

[0031] Other features and advantages of this application will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing the application. The objectives and other advantages of this application may be realized and obtained by means of the structures particularly pointed out in the written description, claims, and drawings. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort. In the drawings:

[0033] Figure 1 This is a schematic diagram of one component of the instant hot water circuit system in this application;

[0034] Figure 2 This is a schematic diagram of another component of the instant hot water circuit system in this application;

[0035] Figure 3 This is a schematic diagram of the structural composition of the temperature-controlled instant hot water dispenser in this application;

[0036] Figure 4 This is a schematic diagram outlining the water dispensing control method for the temperature-adjustable instant hot water dispenser in this application.

[0037] Figure 5 This is a functional structural diagram of the water dispensing control device of the temperature-adjustable instant hot water dispenser in this application;

[0038] Figure 6 This is a schematic diagram of the hardware structure of the water dispensing control device for the temperature-adjustable instant hot water dispenser in this application. Detailed Implementation

[0039] To make the objectives, technical solutions, and beneficial effects of this application clearer, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0040] In instant hot water systems, a single temperature feedback mechanism is typically used for outlet water temperature control. This means that the pump's flow rate is adjusted based on the actual and target outlet water temperatures to regulate the overall outlet water temperature. However, this method results in a relatively long time for the outlet water to reach the target temperature, and the accuracy and stability of the outlet water temperature control are not high.

[0041] To address this, this application installs a water temperature acquisition module on the outlet pipe connected to the outlet of the instant heating pipe, and an outlet flow rate acquisition module on the first inlet pipe between the inlet of the instant heating pipe and the outlet of the water pump, or on the outlet pipe connected to the outlet of the instant heating pipe. During the operation of the instant hot water system, the target outlet flow rate of the water pump is first controlled by feedback based on the target outlet flow rate of the water pump and the actual outlet flow rate acquired by the outlet flow rate acquisition module. When the instant hot water system meets the feedback switching conditions, the target outlet flow rate of the water pump is controlled by feedback based on the target outlet water temperature and the actual outlet water temperature acquired by the outlet water temperature acquisition module. This allows the instant hot water system to quickly approach the target outlet water temperature after startup and reach the target outlet water temperature in a short time. This enables rapid heating and precise control of the outlet water temperature of the instant hot water system, improving the efficiency of outlet water temperature heating and the accuracy and stability of outlet water temperature control, thereby enhancing the user experience of the instant hot water dispenser.

[0042] After introducing the application scenarios and design concepts of this application, the technical solutions provided by this application will be described in detail below.

[0043] This application provides an instant hot water circuit system, see below. Figure 1 As shown, the instant hot water system 100 provided in this application embodiment includes at least a water pump 10, an instant hot water pipe 20, a first inlet water temperature acquisition module 30, an outlet water flow rate acquisition module 40, and an outlet water temperature acquisition module 50; the inlet of the instant hot water pipe 20 is connected to the outlet of the water pump 10 through a first inlet pipe; the first inlet water temperature acquisition module 30 is disposed on the first inlet pipe; the outlet water flow rate acquisition module 40 is disposed on the first inlet pipe or on the outlet pipe connected to the outlet of the instant hot water pipe 20; the outlet water temperature acquisition module 50 is disposed on the outlet pipe connected to the outlet of the instant hot water pipe 20.

[0044] In this embodiment, the first inlet water temperature acquisition module 30 is used to acquire the first inlet water temperature, that is, the inlet water temperature of the instant hot water pipe 20. Based on the first inlet water temperature, the current inlet water temperature of the instant hot water circuit system 100 can be determined. Furthermore, based on the current inlet water temperature and the target outlet water temperature of the instant hot water circuit system 100, the target heating power of the instant hot water pipe 20 and the initial outlet water flow rate of the water pump 10 can be determined, and the instant hot water pipe 20 can be controlled to operate at the target heating power, and the water pump 10 can be controlled to operate at the initial outlet water flow rate. The outlet water flow rate acquisition module 40 is used to acquire the actual outlet water flow rate of the water pump 10, thereby enabling the control of the instant hot water circuit system 100. After the heat pipe 20 operates according to the target heating power and the water pump 10 is controlled to operate according to the initial water flow rate, the water flow rate of the water pump 10 is compensated based on the actual water flow rate of the water pump 10 collected by the water flow rate acquisition module 40 to quickly approach the target water temperature. The water temperature acquisition module 50 is used to collect the actual water temperature of the instant hot water circuit system 100. Thus, when it is determined that the instant hot water circuit system 100 meets the feedback switching conditions, the water flow rate of the water pump 10 is compensated based on the actual water temperature of the instant hot water circuit system 100 collected by the water temperature acquisition module 50 to reach the target water temperature in a short time. In this way, by using actual water flow rate feedback control and actual water temperature feedback control to jointly regulate the water temperature of the instant hot water circuit system 100, the instant hot water circuit system 100 can quickly approach the target water temperature after starting up, and then reach the target water temperature in a short time. This enables rapid heating and precise regulation of the water temperature of the instant hot water circuit system 100, improving the efficiency of water temperature heating and the accuracy and stability of water temperature control, thereby enhancing the user experience of the instant hot water dispenser.

[0045] In one possible implementation, see [reference] Figure 1 As shown, the instant hot water system 100 provided in this application embodiment also includes a second inlet water temperature acquisition module 60; the second inlet water temperature acquisition module 60 is installed on the second inlet pipe connected to the inlet of the water pump 10.

[0046] In this embodiment, the second inlet water temperature acquisition module 60 is used to acquire the second inlet water temperature of the instant hot water circuit system 100, that is, the inlet water temperature of the water pump 10. Based on this, in determining the target heating power of the instant heating pipe 20 and the initial outlet flow rate of the water pump 10, when determining the current inlet water temperature of the instant hot water circuit system 100, besides directly using the first inlet water temperature acquired by the first inlet water temperature acquisition module 30 as the current inlet water temperature of the instant hot water circuit system 100, in a preferred embodiment, the current inlet water temperature of the instant hot water circuit system 100 can also be determined based on the first inlet water temperature acquired by the first inlet water temperature acquisition module 30 and the second inlet water temperature acquired by the second inlet water temperature acquisition module 60; for example, the average of the first inlet water temperature and the second inlet water temperature can be determined as the current inlet water temperature of the instant hot water circuit system 100; or, the product of the first inlet water temperature and the first weight value and the product of the second inlet water temperature and the second weight value can be used. The sum of the products is determined as the current inlet water temperature of the instant hot water circuit system 100. The sum of the first weight value and the second weight value is 1, and the first weight value is greater than the second weight value. After controlling the instant heating pipe to operate according to the target heating power and controlling the water pump to operate according to the initial outlet water flow rate, during the process of detecting the inlet water temperature fluctuation of the instant hot water circuit system 100, if it is determined that the inlet water temperature fluctuation range of the instant hot water circuit system 100 is not lower than the fluctuation threshold, the first inlet water temperature collected by the first inlet water temperature acquisition module 30 can be directly determined as the current inlet water temperature of the instant hot water circuit system 100. Based on the current inlet water temperature and the target outlet water temperature of the instant hot water circuit system 100, the target heating power of the instant heating pipe 20 is re-determined, and the instant heating pipe 20 is controlled to operate according to the re-determined target heating power.

[0047] In this way, during the process of controlling the outlet water temperature of the instant hot water circuit system 100, by using the first inlet water temperature collected by the first inlet water temperature acquisition module 30 and the second inlet water temperature collected by the second inlet water temperature acquisition module 60 during the initial determination of the target heating power of the instant heating pipe 20 and the initial outlet water flow rate of the water pump 10, the current inlet water temperature of the instant hot water circuit system 100 can be determined for outlet water temperature control. This makes the current inlet water temperature of the instant hot water circuit system 100 determined in the initial outlet water control process more stable and accurate, thereby effectively solving the problem of unstable outlet water temperature caused by drastic fluctuations in the current inlet water temperature captured in the initial outlet water control process. Moreover, by directly determining the current inlet water temperature of the instant hot water circuit system 100 based on the first inlet water temperature collected by the first inlet water temperature acquisition module 30 during the later inlet water temperature fluctuation detection process, the relevant calculation amount in the later outlet water control process can be effectively reduced, thereby improving the outlet water temperature heating efficiency while ensuring the stability of the outlet water temperature.

[0048] In one possible implementation, see [reference] Figure 2 As shown, the first inlet water temperature acquisition module 30 includes a first thermistor 31; the second inlet water temperature acquisition module 60 includes a second thermistor 61; and the outlet water temperature acquisition module 50 includes a third thermistor 51.

[0049] In this embodiment, the first inlet water temperature acquisition module 30 can acquire the first inlet water temperature of the instant hot water circuit system 100, which is the inlet water temperature of the instant heating pipe 20, through the first thermistor 31; the second inlet water temperature acquisition module 60 can acquire the second inlet water temperature of the instant hot water circuit system 100, which is the inlet water temperature of the water pump 10, through the second thermistor 61; and the outlet water temperature acquisition module 50 can acquire the actual outlet water temperature of the instant hot water circuit system 100 through the third thermistor 51. Thus, the first inlet water temperature, the second inlet water temperature, and the actual outlet water temperature of the instant hot water circuit system 100 can be accurately captured.

[0050] In one possible implementation, see [reference] Figure 2 As shown, the outflow velocity acquisition module 40 includes a flow meter 41.

[0051] In this embodiment, the water flow rate acquisition module 40 can acquire the actual water flow rate of the instant hot water circuit system 100 through the flow meter 41, thereby achieving accurate capture of the actual water flow rate of the instant hot water circuit system 100.

[0052] In addition, this application also provides a temperature-controlled instant hot water dispenser, see reference. Figure 3 As shown, the system includes a water tank 310, a water outlet control device 320, and the aforementioned instant hot water circuit system 100. The outlet of the water tank 310 is connected to the first inlet pipe connected to the inlet of the water pump 10 in the instant hot water circuit system 100. The water outlet control device 320 is electrically connected to the water pump 10, the instant heating pipe 20, the first inlet water temperature acquisition module 30, the outlet water flow rate acquisition module 40, the outlet water temperature acquisition module 50, and the second inlet water temperature acquisition module 60 in the instant hot water circuit system 100.

[0053] In this embodiment, the water outlet control device 320 in the temperature-adjustable instant hot water dispenser determines the current inlet water temperature of the instant hot water circuit system 100 based on the first inlet water temperature collected by the first inlet water temperature acquisition module 30. Based on the current inlet water temperature and the target outlet water temperature of the instant hot water circuit system 100, it determines the target heating power of the instant heating pipe 20 and the initial outlet water flow rate of the water pump 10. After controlling the instant heating pipe 20 to operate according to the target heating power and controlling the water pump 10 to operate according to the initial outlet water flow rate, the outlet water flow rate of the water pump 10 is compensated based on the actual outlet water flow rate of the water pump 10 collected by the outlet water flow rate acquisition module 40 to quickly approach the target outlet water temperature. When it is determined that the instant hot water circuit system 100 meets the feedback switching conditions, the outlet water flow rate of the water pump 10 is compensated based on the actual outlet water temperature of the instant hot water circuit system 100 collected by the outlet water temperature acquisition module 50 to reach the target outlet water temperature in a short time. In this way, by using actual water flow rate feedback control and actual water temperature feedback control to jointly participate in the regulation of the outlet water temperature of the instant hot water circuit system 100, the instant hot water circuit system 100 can quickly approach the target outlet water temperature after starting work, and then reach the target outlet water temperature in a short time. This enables rapid heating and precise regulation of the outlet water temperature of the instant hot water circuit system 100, improving the efficiency of outlet water temperature heating and the accuracy and stability of outlet water temperature control.

[0054] Furthermore, in the process of controlling the outlet water temperature, the water outlet control device 320 in the temperature-adjustable instant hot water dispenser determines the current inlet water temperature of the instant hot water circuit system 100 by using the first inlet water temperature collected by the first inlet water temperature acquisition module 30 and the second inlet water temperature collected by the second inlet water temperature acquisition module 60 during the process of determining the target heating power of the instant heating pipe 20 and the initial outlet water flow rate of the water pump 10 in the early stage. This makes the current inlet water temperature of the instant hot water circuit system 100 determined in the early stage of outlet water control more stable and accurate, thereby effectively solving the problem of unstable outlet water temperature caused by drastic fluctuations in the current inlet water temperature captured in the early stage of outlet water control. Furthermore, by directly determining the current inlet water temperature of the instant hot water circuit system 100 based on the first inlet water temperature collected by the first inlet water temperature acquisition module 30 during the later inlet water temperature fluctuation detection process of the instant hot water circuit system 100, the output water temperature control can be carried out. This can effectively reduce the relevant calculation amount in the later output water control process, thereby improving the output water temperature heating efficiency while ensuring the stability of the output water temperature.

[0055] Based on the above embodiments, this application provides a water dispensing control method for a temperature-controlled instant hot water dispenser, applied to a water dispensing control device 320 in the temperature-controlled instant hot water dispenser. For details, please refer to... Figure 4 As shown in the embodiments of this application, the general flow of the water dispensing control method for the temperature-adjustable instant hot water dispenser is as follows:

[0056] Step 401: When a water outlet command is received, the target water outlet temperature corresponding to the water outlet command is determined, and the current water inlet temperature of the instant hot water circuit system 100 is determined based on the first water inlet temperature collected by the first water inlet temperature acquisition module 30.

[0057] In this embodiment, the user can select the target water temperature and issue a water command via a physical operation button on the casing of the temperature-controlled instant hot water dispenser, or via a virtual operation button on a user interface such as a client or mini-program. When the water dispensing control device 320 receives the water dispensing command, it can determine the target water temperature corresponding to the water dispensing command, and further determine the current water inlet temperature of the instant hot water circuit system 100 based on the first water inlet temperature collected by the first water inlet temperature acquisition module 30. Specifically, it can adopt, but is not limited to, any of the following methods:

[0058] The first method: The water outlet control device 320 can determine the first inlet water temperature collected by the first inlet water temperature acquisition module 30 as the current inlet water temperature of the instant hot water circuit system 100. Specifically, the water outlet control device 320 can determine the first inlet water temperature of the instant hot water circuit system 100, which is also the inlet water temperature of the instant heating pipe 20, collected by the first thermistor 31, as the current inlet water temperature of the instant hot water circuit system 100.

[0059] The second method: The water outlet control device 320 can determine the current inlet water temperature of the instant hot water circuit system 100 based on the first inlet water temperature collected by the first inlet water temperature acquisition module 30 and the second inlet water temperature collected by the second inlet water temperature acquisition module 60. Specifically, the water outlet control device 320 can determine the current inlet water temperature of the instant hot water circuit system 100 based on the first inlet water temperature collected by the first thermistor 31, which is the inlet water temperature of the instant heating pipe 20, and the second inlet water temperature collected by the second thermistor 61, which is the inlet water temperature of the water pump 10. For example, the water outlet control device 320 determines the average value of the first inlet water temperature and the second inlet water temperature as the current inlet water temperature of the instant hot water circuit system 100; or, the water outlet control device 320 determines the current inlet water temperature of the instant hot water circuit system 100 as the sum of the product of the first inlet water temperature and the first weight value and the product of the second inlet water temperature and the second weight value, wherein the sum of the first weight value and the second weight value is 1, and the first weight value is greater than the second weight value.

[0060] Step 402: Based on the current inlet water temperature and the target outlet water temperature, determine the target heating power of the instantaneous heating pipe 20 and the initial outlet water flow rate of the water pump 10.

[0061] In this embodiment, the water outlet control device 320 can perform energy conservation calculations based on the current inlet water temperature and the target outlet water temperature to obtain the target heating power of the instantaneous heating pipe 20 and the initial outlet flow rate of the water pump 10.

[0062] In practical implementation, when the outlet water control device 320 determines the target heating power of the instantaneous heat pipe 20 based on the current inlet water temperature and the target outlet water temperature, it may adopt, but is not limited to, the following methods:

[0063] First, the water outlet control device 320 calculates the water output supported by the instant hot water circuit system 100 per minute based on the current inlet water temperature and the target outlet water temperature using the following formula (1):

[0064] W = Q = C * m * Δt ... Formula (1)

[0065] In the above formula (1), W represents the water output supported by the instant hot water circuit system 100 per minute; C represents the specific heat capacity of water, which is 4.2×1000J / (kg·℃); m represents the maximum water flow rate supported by the instant hot water circuit system 100 per minute. In practical applications, m can also be the product of the maximum water flow rate supported by the instant hot water circuit system 100 per minute and a set coefficient (e.g., 0.8); △t represents the temperature difference between the current inlet water temperature and the target outlet water temperature of the instant hot water circuit system 100.

[0066] Then, the water outlet control device 320 calculates the target heating power required by the instant hot water circuit system 100 during the heating process based on the water output per minute supported by the instant hot water circuit system 100 and the expected completion time.

[0067] In practical implementation, when the water outlet control device 320 determines the initial water outlet flow rate of the water pump 10 based on the current inlet water temperature and the target outlet water temperature, it can calculate the initial water outlet flow rate of the water pump 10 using the following formula (2):

[0068] Speed_v=power / (C*△t)*(1+M)……Formula(2)

[0069] In the above formula (2), Speed_v represents the initial outlet flow rate of the water pump 10; power represents the target heating power of the instant heating pipe 20; Δt represents the temperature difference between the current inlet water temperature and the target outlet water temperature of the instant hot water circuit system 100; C represents the specific heat capacity of water, with a value of 4.2×1000J / (kg·℃); M represents the deviation of the whole machine components, wherein the deviation of the whole machine components includes, but is not limited to, the working deviation of the water pump and the working deviation of the instant heating pipe, and the working deviation of the water pump and the working deviation of the instant heating pipe are known values ​​that have been calibrated in advance through testing.

[0070] Step 403: After controlling the instant heating pipe 20 to operate according to the target heating power and controlling the water pump 10 to operate according to the initial water flow rate, the instant hot water circuit system 100 is controlled to enter the first feedback control stage.

[0071] In this embodiment, the water outlet control device 320 determines the target heating power of the instant heating pipe 20 and the initial water outlet flow rate of the water pump 10 based on the current inlet water temperature and the target outlet water temperature. Then, it can control the instant heating pipe 20 to operate according to the target heating power, control the water pump 10 to outlet water according to the initial water outlet flow rate, and further control the instant hot water circuit system 100 to enter the first feedback control stage.

[0072] Step 404: In the first feedback control phase, the first feedback control operation is executed periodically. The first feedback control operation includes: determining the first compensated outlet flow rate of the water pump 10 based on the first target outlet flow rate of the water pump 10 and the actual outlet flow rate of the water pump 10 collected by the outlet flow rate acquisition module 40; adjusting the first target outlet flow rate of the water pump 10 based on the first compensated outlet flow rate, and controlling the water pump 10 to run according to the adjusted first target outlet flow rate. Wherein, when the first feedback control operation is executed for the first time, the first target outlet flow rate is the initial outlet flow rate, and when the first feedback control operation is not executed for the first time, the first target outlet flow rate is the adjusted first target outlet flow rate obtained when the first feedback control operation was executed last time.

[0073] In this embodiment of the application, in order to improve the heating rate of the outlet water temperature, in the first feedback control stage, the outlet water control method based on the inlet and outlet water flow rates can be used periodically to regulate the outlet water. That is, the outlet water control device 320 can periodically acquire the actual outlet water flow rate of the water pump 10 collected by the flow meter 41 in the outlet water flow rate acquisition module 40, and determine the first compensated outlet water flow rate of the water pump 10 based on the first target outlet water flow rate and the actual outlet water flow rate. Then, the first target outlet water flow rate of the water pump 10 is adjusted based on the first compensated outlet water flow rate, and the water pump 10 is controlled to run according to the adjusted first target outlet water flow rate. For example, the first target outlet water flow rate of the water pump 10 is updated and adjusted to the first compensated outlet water flow rate. After determining the first target voltage corresponding to the first compensated outlet water flow rate of the water pump 10, the outlet water flow rate of the water pump 10 is adjusted to the first compensated outlet water flow rate by controlling the water pump 10 to run at the first target voltage. Specifically, the water outlet control device 320 can determine the first target voltage corresponding to the first compensated water outlet velocity of the water pump 10 based on the first target water outlet velocity and the actual water outlet velocity of the water pump 10, using the following formula (3):

[0074] pv1=(csp-tsp)*px / t……Formula (3)

[0075] In the above formula (3), pv1 represents the first target voltage corresponding to the first compensated outlet flow rate of the water pump 10, that is, the outlet flow rate of the water pump 10 reaches the first compensated outlet flow rate under the first target voltage; csp represents the actual outlet flow rate of the water pump 10; tsp represents the first target outlet flow rate of the water pump 10; px represents the characteristic coefficient of the water pump 10 (that is, the mapping relationship between the voltage of the water pump 10 and the outlet flow rate, which can be obtained by test calibration); t represents the expected completion time.

[0076] Among them, pv 1总 = (csp-tsp)*px represents the total control value calculated for the first feedback control stage. Assuming the expected completion time t=5, the water outlet control device 320 can control the total control value pv. 1总 The first target outlet flow rate of the water pump 10 is adjusted in 5 adjustment cycles. Of course, each adjustment cycle can recalculate the first target voltage pv1 = (csp-tsp)*px / t corresponding to the first compensated outlet flow rate of the water pump 10 based on the actual outlet flow rate and the first target outlet flow rate collected by the outlet flow rate acquisition module 40.

[0077] Furthermore, in this embodiment, to effectively avoid fluctuations in the inlet water temperature caused by environmental factors and water circuit components, which could affect the normal operation of the instant hot water system 100, the outlet water control device 320, after controlling the instant heating pipe 20 to operate according to the target heating power and the water pump 10 to operate according to the initial outlet water flow rate, can also perform inlet water temperature fluctuation detection on the instant hot water system 100 in real time or periodically based on the first inlet water temperature collected by the first inlet water temperature acquisition module 30, and determine the inlet water temperature fluctuation of the instant hot water system 100. When the water temperature fluctuation range is not lower than the fluctuation threshold, for example, when the temperature difference between two consecutive inlet water temperatures collected by the first inlet water temperature acquisition module 30 is not less than a set threshold (e.g., 2℃), it is determined that the inlet water temperature fluctuation range of the instant hot water circuit system 100 is not lower than the fluctuation threshold. At this time, the first inlet water temperature collected by the first inlet water temperature acquisition module 30 is determined as the current inlet water temperature of the instant hot water circuit system 100. Based on the current inlet water temperature and the target outlet water temperature of the instant hot water circuit system 100, the target heating power of the instant heating pipe 20 is re-determined, and the instant heating pipe 20 is controlled to operate according to the re-determined target heating power. The method of re-determining the target heating power of the instant heating pipe 20 is similar to the aforementioned method of determining the target heating power based on formula (1), and the repeated parts will not be described again.

[0078] Step 405: When it is determined that the instant hot water circuit system 100 meets the feedback switching conditions, control the instant hot water circuit system 100 to enter the second feedback control stage.

[0079] In this embodiment, the water outlet control device 320 can determine that the instant hot water system 100 meets the feedback switching condition after determining that the first feedback control phase lasts for a first duration. The first duration is the time required, calibrated in advance through testing, for the temperature difference between the actual outlet water temperature and the target outlet water temperature of the instant hot water system 100 to be less than or equal to a temperature difference threshold. Alternatively, it can periodically acquire the actual outlet water temperature of the instant hot water system 100 collected by the outlet water temperature acquisition module 50 through the third thermistor 51, and determine that the instant hot water system 100 meets the feedback switching condition when the temperature difference between the actual outlet water temperature collected by the outlet water temperature acquisition module 50 and the target outlet water temperature is less than or equal to the temperature difference threshold. The temperature difference threshold is the temperature difference corresponding to the optimal outlet water temperature control achieved by the switching between the first and second feedback control phases, calibrated in advance through testing. Furthermore, when the water outlet control device 320 determines that the instant hot water system 100 meets the feedback switching condition, it can control the instant hot water system 100 to enter the second feedback control phase.

[0080] Step 406: In the second feedback control stage, the second feedback control operation is executed periodically. The second feedback control operation includes: determining the second compensated outlet flow rate of the water pump 10 based on the target outlet water temperature and the actual outlet water temperature collected by the outlet water temperature acquisition module; adjusting the second target outlet flow rate of the water pump 10 based on the second compensated outlet flow rate, and controlling the water pump 10 to run according to the adjusted second target outlet flow rate. Specifically, when the second feedback control operation is executed for the first time, the second target outlet flow rate is the adjusted first target outlet flow rate obtained when the first feedback control operation is executed for the last time. When the second feedback control operation is not executed for the first time, the second target outlet flow rate is the adjusted second target outlet flow rate obtained when the second feedback control operation is executed for the last time.

[0081] In this embodiment, in order to further improve the heating rate of the outlet water temperature, in the second feedback control stage, an outlet water control method based on the inlet and outlet water temperatures can be used for outlet water regulation. That is, the outlet water control device 320 can periodically acquire the actual outlet water temperature of the instant hot water circuit system 100 collected by the third thermistor 51 in the outlet water temperature acquisition module 50, and determine the second compensated outlet water flow rate of the water pump 10 based on the target outlet water temperature and the actual outlet water temperature of the instant hot water circuit system 100. Then, the second target outlet water flow rate of the water pump 10 is adjusted based on the second compensated outlet water flow rate. For example, the second target outlet water flow rate of the water pump 10 is updated and adjusted to the second compensated outlet water flow rate, and the water pump 10 is further controlled to run according to the adjusted second target outlet water flow rate. Specifically, the outlet water control device 320 can determine the second compensated outlet water flow rate of the water pump 10 based on the second target outlet water temperature and the actual outlet water temperature of the instant hot water circuit system 100 using the following formula (4):

[0082] pv2=[((last_temp-out_temp)*P+I*(set_temp-out_temp))*px] / t

[0083] ...Formula (4)

[0084] In the above formula (4), pv2 represents the second target voltage corresponding to the second compensated outlet flow rate of water pump 10, that is, the outlet flow rate of water pump 10 reaches the second compensated outlet flow rate under the second target voltage; P represents the proportional coefficient; I represents the integral coefficient; last_temp represents the second target outlet water temperature of water pump 10 at the last adjustment; out_temp represents the current actual outlet water temperature of water pump 10; set_temp represents the current second target outlet water temperature of water pump 10; px represents the characteristic coefficient of water pump 10 (that is, the mapping relationship between the voltage of water pump 10 and the outlet flow rate, which can be obtained by test calibration); t represents the expected completion time.

[0085] Among them, pv 2总 = ((last_temp - out_temp) * P + I * (set_temp - out_temp)) * px represents the total control value calculated for the second feedback control stage. Assuming the expected completion time t = 5, the effluent control device 320 can control the total control value pv. 2总 The second target outlet flow rate of the water pump 10 is adjusted in 5 adjustment cycles. Of course, each adjustment cycle can be based on the target outlet water temperature of the instant hot water circuit system 100 and the actual outlet water temperature collected by the outlet water temperature acquisition module 50, and the second compensated outlet flow rate of the water pump 10 can be recalculated as pv2 = [((last_temp-out_temp)*P+I*(set_temp-out_temp))*px] / t.

[0086] Furthermore, in order to effectively avoid the increase of water bubbles or the occurrence of jetting due to large fluctuations in water pressure and operating voltage, in this embodiment, during the second feedback control stage, the water outlet control device 320 can also use an outlet control method based on the inlet and outlet flow rates for abnormal regulation. That is, during the second feedback control stage, the water outlet control device 320 periodically acquires the actual outlet flow rate of the water pump 10 collected by the flow meter 41 in the outlet flow rate acquisition module 40, and determines that when the flow rate difference between the second target outlet flow rate of the water pump 10 and the actual outlet flow rate is greater than or equal to the flow rate difference threshold, it determines the third compensation outlet flow rate of the water pump 10 based on the actual outlet flow rate and the second target outlet flow rate, and adjusts the second target outlet flow rate of the water pump 10 based on the third compensation outlet flow rate. For example, the second target outlet flow rate of the water pump 10 is updated and adjusted to the third compensation outlet flow rate, thereby further controlling the water pump 10 to operate according to the adjusted second target outlet flow rate. The third compensated outlet flow velocity of the water pump 10 is similar to the first compensated outlet flow velocity determined by the aforementioned formula (3), and the repeated parts will not be repeated.

[0087] In addition, in this embodiment of the application, in order to effectively avoid the problem that fluctuations in the inlet water temperature caused by environmental factors and water circuit components may affect the normal operation of the instant hot water circuit system 100, the outlet water control device 320 can also perform inlet water temperature fluctuation detection on the instant hot water circuit system 100 in real time or periodically based on the first inlet water temperature collected by the first inlet water temperature acquisition module 30 during the second feedback control phase of the instant hot water circuit system 100, and determine that the inlet water temperature fluctuation range of the instant hot water circuit system 100 is not lower than the fluctuation threshold. For example, when the temperature difference between two adjacent inlet water temperatures is not less than a set threshold (e.g., 2℃), the fluctuation range of the inlet water temperature of the instant hot water circuit system 100 is determined to be not lower than the fluctuation threshold. At this time, the first inlet water temperature collected by the first inlet water temperature acquisition module 30 is determined as the current inlet water temperature of the instant hot water circuit system 100. Based on the current inlet water temperature and the target outlet water temperature of the instant hot water circuit system 100, the target heating power of the instant heating pipe 20 is re-determined, and the instant heating pipe 20 is controlled to operate according to the re-determined target heating power. The method of re-determining the target heating power of the instant heating pipe 20 is similar to the aforementioned method of determining the target heating power based on formula (1), and the repeated parts will not be described again.

[0088] Step 407: When the instant hot water circuit system 100 meets the conditions for stopping water output, control the water pump 10 and the instant hot water pipe 20 to stop operating.

[0089] In this embodiment, the water outlet control device 320 can determine, based on the actual water outlet flow rate collected by the water outlet flow rate acquisition module 40, that the instant hot water circuit system 100 meets the conditions for stopping water outlet when the current total water outlet volume reaches the target water volume corresponding to the water outlet command; or, upon receiving a water outlet termination command, it determines that the instant hot water circuit system 100 meets the conditions for stopping water outlet. At this time, the water outlet control device 320 can control the water pump 10 and the instant heating pipe 20 to stop operating, thereby completing the entire water outlet control process.

[0090] In summary, in this embodiment, upon receiving a water outlet command, the first inlet water temperature collected by the first thermistor 31 in the first inlet water temperature acquisition module 30 and the second inlet water temperature collected by the second thermistor 61 in the second inlet water temperature acquisition module 60 are used to determine the current inlet water temperature of the instant hot water circuit system 100. Based on the difference between the current inlet water temperature and the target outlet water temperature, the target heating power of the instant heating pipe 20 and the initial outlet water flow rate of the water pump 10 when the outlet water of the instant hot water circuit system reaches the target outlet water temperature are calculated through energy conservation, thereby enabling the instant heating pipe 20 and the water pump 10 to start working. Subsequently, due to the flow of water inside the instant hot water circuit system 100, heat exchange occurs between the inlet water and the instant hot water circuit system 100, and the inlet water temperature remains basically stable. The first inlet water temperature collected by the first thermistor 31 in the first inlet water temperature acquisition module 30 is stable and will not fluctuate significantly. Therefore, when detecting inlet water temperature fluctuations in the instant hot water circuit system 100, it is more accurate to use the first inlet water temperature collected by the first thermistor 31 in the first inlet water temperature acquisition module 30 as the current inlet water temperature of the instant hot water circuit system 100, thereby improving the accuracy of water output control.

[0091] Furthermore, in the first feedback control stage, the deviation between the actual outlet water temperature and the target outlet water temperature of the instant hot water circuit system 100 is too large. Using the outlet water control method based on the inlet and outlet water flow rates, the difference between the actual outlet water flow rate and the target outlet water flow rate is used as the outlet water control input parameter to adjust the target outlet water flow rate of the water pump 10, which can make the outlet water temperature of the instant hot water circuit system 100 quickly approach the target outlet water temperature. In the second feedback control stage, the deviation between the actual outlet water temperature and the target outlet water temperature of the instant hot water circuit system 100 is smaller. The outlet water control method based on the inlet and outlet water flow rates is weakened, and the outlet water control method based on the inlet and outlet water temperature is activated. The difference between the actual outlet water temperature and the target outlet water temperature is used as the outlet water control input parameter to adjust the target outlet water flow rate of the water pump 10, which can make the outlet water temperature of the instant hot water circuit system 100 accurately reach the target outlet water temperature. In this way, by using a water outlet control method based on inlet and outlet water flow rate for water outlet regulation in the first feedback control stage and a water outlet control method based on inlet and outlet water temperature for water outlet regulation in the second feedback control stage, both methods can participate in the water outlet regulation of the instant hot water circuit system 100. This allows the instant hot water circuit system 100 to quickly approach the target water outlet temperature after startup and reach the target water outlet temperature in a short time. At the same time, in the second feedback control stage, the water outlet control method based on inlet and outlet water flow rate can perform abnormal regulation. When the instant hot water circuit system 100 is in a complex working environment with large fluctuations in water pressure and operating voltage, resulting in an increase in water bubbles, the water outlet control method based on inlet and outlet water flow rate can quickly detect abnormalities in the current water outlet flow rate and make rapid adjustments. This can effectively prevent the instant hot water circuit system from going out of control and causing jetting, thereby enhancing the safety and stability of the instant hot water circuit system 100.

[0092] Next, the functional structure of the water outlet control device 320 provided in this application embodiment will be briefly described. (See reference...) Figure 5 As shown, the water outlet control device 320 provided in this application embodiment includes at least:

[0093] The first determining unit 501 is used to determine the target water temperature corresponding to the water outlet command when receiving the water outlet command, and to determine the current water temperature of the instant hot water circuit system based on the first water inlet temperature collected by the first water inlet temperature acquisition module.

[0094] The second determining unit 502 is used to determine the target heating power of the instantaneous heating pipe and the initial outlet flow rate of the water pump based on the current inlet water temperature and the target outlet water temperature.

[0095] The first control unit 503 is used to control the instant heating pipe to operate according to the target heating power and to control the water pump to operate according to the initial water flow rate, and then control the instant hot water circuit system to enter the first feedback control stage.

[0096] The second control unit 504 is used to periodically execute a first feedback control operation during the first feedback control phase. The first feedback control operation includes: determining a first compensated outlet flow rate of the water pump based on the first target outlet flow rate of the water pump and the actual outlet flow rate of the water pump collected by the outlet flow rate acquisition module; adjusting the first target outlet flow rate of the water pump based on the first compensated outlet flow rate, and controlling the water pump to run according to the adjusted first target outlet flow rate; wherein, when the first feedback control operation is executed for the first time, the first target outlet flow rate is the initial outlet flow rate, and when the first feedback control operation is not executed for the first time, the first target outlet flow rate is the adjusted first target outlet flow rate obtained when the first feedback control operation was executed last time.

[0097] The stage switching unit 505 is used to control the instant hot water circuit system to enter the second feedback control stage when the instant hot water circuit system meets the feedback switching conditions.

[0098] The third control unit 506 is used to periodically execute a second feedback control operation during the second feedback control phase. The second feedback control operation includes: determining a second compensated outlet flow rate of the water pump based on the target outlet water temperature and the actual outlet water temperature collected by the outlet water temperature acquisition module; adjusting the second target outlet flow rate of the water pump based on the second compensated outlet flow rate, and controlling the water pump to run according to the adjusted second target outlet flow rate; wherein, when the second feedback control operation is executed for the first time, the second target outlet flow rate is the adjusted first target outlet flow rate obtained when the first feedback control operation is executed for the last time, and when the second feedback control operation is not executed for the first time, the second target outlet flow rate is the adjusted second target outlet flow rate obtained when the second feedback control operation is executed for the previous time.

[0099] The fourth control unit 507 is used to control the water pump and the instantaneous heating pipe to stop operating when the instantaneous hot water circuit system meets the conditions for stopping water output.

[0100] In one possible implementation, the second determining unit 502 is specifically used to determine the first inlet water temperature collected by the first inlet water temperature acquisition module as the current inlet water temperature of the instant hot water circuit system; or; to determine the current inlet water temperature of the instant hot water circuit system based on the first inlet water temperature collected by the first inlet water temperature acquisition module and the second inlet water temperature collected by the second inlet water temperature acquisition module.

[0101] In one possible implementation, the water outlet control device 320 provided in this application embodiment further includes:

[0102] The first abnormality processing unit 508 is used in the second feedback control stage to determine the third compensated outlet flow rate of the water pump based on the actual outlet flow rate and the second target outlet flow rate when the flow difference between the actual outlet flow rate and the second target outlet flow rate is greater than or equal to the flow difference threshold, and to adjust the second target outlet flow rate of the water pump based on the third compensated outlet flow rate, and to control the water pump to operate according to the adjusted second target outlet flow rate.

[0103] In one possible implementation, the water outlet control device 320 provided in this application embodiment further includes:

[0104] The second anomaly processing unit 509 is used to detect the inlet water temperature fluctuation of the instant hot water circuit system based on the first inlet water temperature collected by the first inlet water temperature acquisition module; when it is determined that the inlet water temperature fluctuation range of the instant hot water circuit system is not lower than the fluctuation threshold, the first inlet water temperature collected by the first inlet water temperature acquisition module is determined as the current inlet water temperature of the instant hot water circuit system; based on the current inlet water temperature and the target outlet water temperature of the instant hot water circuit system, the target heating power of the instant hot water pipe is re-determined, and the instant hot water pipe is controlled to operate according to the re-determined target heating power.

[0105] In one possible implementation, the stage switching unit 505 is specifically used to determine that the instant hot water circuit system meets the feedback switching conditions after the first feedback control stage lasts for a first duration; or, when the temperature difference between the actual outlet water temperature collected by the outlet water temperature acquisition module and the target outlet water temperature is less than or equal to the temperature difference threshold, the instant hot water circuit system meets the feedback switching conditions.

[0106] It should be noted that the principle of the water outlet control device 320 provided in this application embodiment to solve the technical problem is similar to the water outlet control method of the temperature-adjustable instant hot water dispenser provided in this application embodiment. Therefore, the implementation of the water outlet control device 320 provided in this application embodiment can refer to the implementation of the water outlet control method of the temperature-adjustable instant hot water dispenser provided in this application embodiment, and the repeated parts will not be described again.

[0107] The hardware structure of the water outlet control device 320 provided in this embodiment is briefly described below. (See also...) Figure 6 As shown, the water dispensing control device 320 provided in this application embodiment includes at least a processor 601, a memory 602, and a computer program stored in the memory 602 and executable on the processor 601. When the processor 601 executes the computer program, it implements the water dispensing control method for the temperature-adjustable instant hot water dispenser provided in this application embodiment.

[0108] The water outlet control device 320 provided in this application embodiment can also be connected to a bus 603 of different components (including processor 601 and memory 602). Here, bus 603 represents one or more types of bus structures, including memory bus, peripheral bus, local area bus, etc.

[0109] Memory 602 may include a readable storage medium in the form of volatile memory, such as random access memory (RAM) 6021 and / or cache memory 6022, and may further include read-only memory (ROM) 6023. Memory 602 may also include a program tool 6025 having a set (at least one) of program modules 6024, including but not limited to an operating subsystem, one or more application programs, other program modules, and program data, each or some combination of these examples may include an implementation of a network environment.

[0110] Processor 601 can be a single processing element or a collective term for multiple processing elements. For example, processor 601 can be a central processing unit (CPU), or one or more integrated circuits configured to implement the water dispensing control method for the temperature-controlled instant hot water dispenser provided in the embodiments of this application. Specifically, processor 601 can be a general-purpose processor, including but not limited to CPUs, application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc.

[0111] The water outlet control device 320 can also communicate with one or more devices that allow a user to interact with the water outlet control device 320 (e.g., mobile phones, computers, etc.), and / or with external devices 604 that enable the water outlet control device 320 to communicate with one or more other home appliances (e.g., routers, modems, etc.). This communication can be achieved through a communication module 605 (e.g., Bluetooth module, Wireless Fidelity (WiFi) module, etc.). Furthermore, the water outlet control device 320 can also communicate with one or more networks (e.g., Local Area Network (LAN), Wide Area Network (WAN), and / or public networks, such as the Internet) via a network adapter 606. Figure 6As shown, network adapter 606 communicates with other modules of the water outlet control device 320 via bus 603. It should be understood that, although... Figure 6 As not shown, other hardware and / or software modules can be used in conjunction with the water outlet control device 320, including but not limited to microcode, device drivers, redundant processors, external disk drive arrays, Redundant Arrays of Independent Disks (RAID) subsystems, tape drives, and data backup storage subsystems.

[0112] It should be noted that, Figure 6 The water outlet control device 320 shown is merely an example and should not impose any limitations on the functionality and scope of use of the embodiments of this application.

[0113] Furthermore, this application embodiment also provides a computer-readable storage medium storing computer instructions. When executed by a processor, these computer instructions implement the water dispensing control method for the temperature-controlled instant hot water dispenser provided in this application embodiment. Specifically, the computer instructions can be built into or installed in the processor, so that the processor can implement the water dispensing control method for the temperature-controlled instant hot water dispenser provided in this application embodiment by executing the built-in or installed computer instructions.

[0114] In addition, the water dispensing control method for the temperature-adjustable instant hot water dispenser provided in this application embodiment can also be implemented as a computer program product. The computer program product includes program code, which implements the water dispensing control method for the temperature-adjustable instant hot water dispenser provided in this application embodiment when the program code is run on a processor.

[0115] The computer program product provided in this application embodiment may employ one or more computer-readable storage media, which may be, but is not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination thereof. Specifically, more specific examples (a non-exhaustive list) of computer-readable storage media include electrical connections with one or more wires, portable disks, hard disks, RAM, ROM, erasable programmable read-only memory (EPROM), optical fibers, portable compact disc read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof.

[0116] The computer program product provided in this application embodiment can be a CD-ROM and include program code, and can also run on a water outlet control device. However, the computer program product provided in this application embodiment is not limited to this. In this application embodiment, the computer-readable storage medium can be any tangible medium that contains or stores program code, which can be used by or in conjunction with an instruction execution system, device, or apparatus.

[0117] It should be noted that although several units or sub-units of the device have been mentioned in the detailed description above, this division is merely exemplary and not mandatory. In fact, according to embodiments of this application, the features and functions of two or more units described above can be embodied in one unit. Conversely, the features and functions of one unit described above can be further divided and embodied by multiple units.

[0118] Furthermore, although the operations of the method of this application are described in a specific order in the accompanying drawings, this does not require or imply that these operations must be performed in that specific order, or that all the operations shown must be performed to achieve the desired result. Additionally or alternatively, certain steps may be omitted, multiple steps may be combined into one step, and / or one step may be broken down into multiple steps.

[0119] Although preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.

[0120] Obviously, those skilled in the art can make various modifications and variations to the embodiments of this application without departing from the spirit and scope of the embodiments of this application. Therefore, if these modifications and variations to the embodiments of this application fall within the scope of the claims of this application and their equivalents, this application also intends to include these modifications and variations.

Claims

1. An instant hot water circuit system, characterized in that, The system includes a water pump, an instant heating pipe, a first inlet water temperature acquisition module, an outlet water flow rate acquisition module, and an outlet water temperature acquisition module. The inlet of the instant heating pipe is connected to the outlet of the water pump via a first inlet pipe. The first inlet water temperature acquisition module is installed on the first inlet pipe. The outlet water flow rate acquisition module is installed on the first inlet pipe or on the outlet pipe connected to the outlet of the instant heating pipe. The outlet water temperature acquisition module is installed on the outlet pipe connected to the outlet of the instant heating pipe. During the operation of the instant hot water system, water output control is performed through the following steps: Based on the first inlet water temperature collected by the first inlet water temperature acquisition module, the current inlet water temperature of the instant hot water circuit system is determined. Based on the current inlet water temperature and the target outlet water temperature, the target heating power of the instantaneous heating pipe and the initial outlet flow rate of the water pump are determined. After controlling the instant heating pipe to operate according to the target heating power and controlling the water pump to operate according to the initial water flow rate, the instant hot water circuit system is controlled to enter the first feedback control stage. In the first feedback control phase, a first feedback control operation is periodically executed. The first feedback control operation includes: determining a first compensated outlet flow rate of the water pump based on the first target outlet flow rate of the water pump and the actual outlet flow rate of the water pump collected by the outlet flow rate acquisition module; adjusting the first target outlet flow rate of the water pump based on the first compensated outlet flow rate, and controlling the water pump to operate according to the adjusted first target outlet flow rate; wherein, when the first feedback control operation is executed for the first time, the first target outlet flow rate is the initial outlet flow rate, and when the first feedback control operation is not executed for the first time, the first target outlet flow rate is the adjusted first target outlet flow rate obtained when the first feedback control operation was executed last time. When it is determined that the instant hot water circuit system meets the feedback switching conditions, the instant hot water circuit system is controlled to enter the second feedback control stage. In the second feedback control phase, a second feedback control operation is periodically executed. The second feedback control operation includes: determining a second compensated outlet flow rate of the water pump based on the target outlet water temperature and the actual outlet water temperature collected by the outlet water temperature acquisition module; adjusting the second target outlet flow rate of the water pump based on the second compensated outlet flow rate, and controlling the water pump to operate according to the adjusted second target outlet flow rate. Specifically, when the second feedback control operation is executed for the first time, the second target outlet flow rate is the adjusted first target outlet flow rate obtained during the last execution of the first feedback control operation; when the second feedback control operation is not executed for the first time, the second target outlet flow rate is the adjusted second target outlet flow rate obtained during the previous execution of the second feedback control operation. When the instant hot water circuit system meets the conditions for stopping water output, the water pump and the instant hot water pipe are controlled to stop operating.

2. The instant hot water circuit system as described in claim 1, characterized in that, It also includes a second inlet water temperature acquisition module; the second inlet water temperature acquisition module is installed on the second inlet pipe connected to the inlet of the water pump.

3. The instant hot water circuit system as described in claim 2, characterized in that, The first inlet water temperature acquisition module includes a first thermistor; the second inlet water temperature acquisition module includes a second thermistor; and the outlet water temperature acquisition module includes a third thermistor.

4. The instant hot water circuit system as described in claim 1, characterized in that, The outflow velocity acquisition module includes a flow meter.

5. A temperature-controlled instant hot water dispenser, characterized in that, The system includes a water tank, a water outlet control device, and an instant hot water circuit system as described in any one of claims 1-4; the water outlet of the water tank is connected to the first inlet pipe connected to the inlet of the water pump in the instant hot water circuit system; the water outlet control device is electrically connected to the water pump, the instant heating pipe, the first inlet water temperature acquisition module, the second inlet water temperature acquisition module, the outlet water flow rate acquisition module, and the outlet water temperature acquisition module in the instant hot water circuit system.

6. A method for controlling the water output of a temperature-adjustable instant hot water dispenser, characterized in that, The water dispensing control device applied in the temperature-controlled instant hot water dispenser as described in claim 5 includes: Upon receiving a water outlet command, the target water outlet temperature corresponding to the water outlet command is determined, and the current water inlet temperature of the instant hot water circuit system is determined based on the first water inlet temperature collected by the first water inlet temperature acquisition module. Based on the current inlet water temperature and the target outlet water temperature, determine the target heating power of the instantaneous heating pipe and the initial outlet flow rate of the water pump; After controlling the instant heating pipe to operate according to the target heating power and controlling the water pump to operate according to the initial water flow rate, the instant hot water circuit system is controlled to enter the first feedback control stage. In the first feedback control phase, a first feedback control operation is periodically executed. The first feedback control operation includes: determining a first compensated outlet flow rate of the water pump based on the first target outlet flow rate of the water pump and the actual outlet flow rate of the water pump collected by the outlet flow rate acquisition module; adjusting the first target outlet flow rate of the water pump based on the first compensated outlet flow rate, and controlling the water pump to operate according to the adjusted first target outlet flow rate; wherein, when the first feedback control operation is executed for the first time, the first target outlet flow rate is the initial outlet flow rate, and when the first feedback control operation is not executed for the first time, the first target outlet flow rate is the adjusted first target outlet flow rate obtained when the first feedback control operation was executed last time. When it is determined that the instant hot water circuit system meets the feedback switching conditions, the instant hot water circuit system is controlled to enter the second feedback control stage. In the second feedback control phase, a second feedback control operation is periodically executed. The second feedback control operation includes: determining a second compensated outlet flow rate of the water pump based on the target outlet water temperature and the actual outlet water temperature collected by the outlet water temperature acquisition module; adjusting the second target outlet flow rate of the water pump based on the second compensated outlet flow rate, and controlling the water pump to operate according to the adjusted second target outlet flow rate. Specifically, when the second feedback control operation is executed for the first time, the second target outlet flow rate is the adjusted first target outlet flow rate obtained during the last execution of the first feedback control operation; when the second feedback control operation is not executed for the first time, the second target outlet flow rate is the adjusted second target outlet flow rate obtained during the previous execution of the second feedback control operation. When the instant hot water circuit system meets the conditions for stopping water output, the water pump and the instant hot water pipe are controlled to stop operating.

7. The water dispensing control method for a temperature-adjustable instant hot water dispenser as described in claim 6, characterized in that, Based on the first inlet water temperature acquired by the first inlet water temperature acquisition module, the current inlet water temperature of the instant hot water circuit system is determined, including: The first inlet water temperature collected by the first inlet water temperature acquisition module is determined as the current inlet water temperature of the instant hot water circuit system; or; The current inlet water temperature of the instant hot water circuit system is determined based on the first inlet water temperature collected by the first inlet water temperature collection module and the second inlet water temperature collected by the second inlet water temperature collection module.

8. The water dispensing control method for a temperature-adjustable instant hot water dispenser as described in claim 6, characterized in that, Also includes: In the second feedback control stage, when it is determined that the flow difference between the actual outlet flow rate of the water pump and the second target outlet flow rate is greater than or equal to the flow difference threshold, the third compensation outlet flow rate of the water pump is determined based on the actual outlet flow rate and the second target outlet flow rate, and the second target outlet flow rate of the water pump is adjusted based on the third compensation outlet flow rate, and the water pump is controlled to operate according to the adjusted second target outlet flow rate.

9. The water dispensing control method for a temperature-adjustable instant hot water dispenser as described in claim 6, characterized in that, Also includes: Based on the first inlet water temperature collected by the first inlet water temperature acquisition module, the inlet water temperature fluctuation of the instant hot water circuit system is detected. When the fluctuation range of the inlet water temperature of the instant hot water circuit system is determined to be no less than the fluctuation threshold, the first inlet water temperature collected by the first inlet water temperature acquisition module is determined as the current inlet water temperature of the instant hot water circuit system; based on the current inlet water temperature and the target outlet water temperature of the instant hot water circuit system, the target heating power of the instant heating pipe is re-determined, and the instant heating pipe is controlled to operate according to the re-determined target heating power.

10. The water dispensing control method for a temperature-controlled instant hot water dispenser as described in any one of claims 6-9, characterized in that, Determining that the instant hot water circuit system meets the feedback switching conditions includes: After determining that the first feedback control phase lasts for a first duration, it is determined that the instant hot water circuit system meets the feedback switching conditions; or; When the temperature difference between the target outlet water temperature and the actual outlet water temperature collected by the outlet water temperature acquisition module is less than or equal to the temperature difference threshold, the instant hot water circuit system is determined to meet the feedback switching condition.

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