Warm water outlet control method and equipment of water drinking device and computer readable storage medium

Abstract

The invention discloses a warm water outlet control method and equipment of a water drinking device and a computer readable storage medium, and relates to the technical field of water drinking devices.The warm water outlet control method comprises the steps that in response to a warm water instruction containing the target water outlet temperature, the first temperature of a phase change hot tank at the current moment and the pure water temperature of the water outlet end of a filtering assembly at the current moment are obtained; according to the target water outlet temperature, the first temperature, the pure water temperature and the maximum working power of the instant heating pipe, the target flow speed of water flow in the water drinking device and the target water mixing temperature of a mixed water path are determined; the rotating speed of a water pump is adjusted based on the target flow speed, and working parameters of a flow adjusting valve are adjusted based on the target water mixing temperature, so that preheated water of the first waterway and normal-temperature water of the second waterway are mixed to form preheated mixed water; and after the preheated mixed water flows into the instant heating pipe, the working power of the instant heating pipe is dynamically adjusted according to the second temperature of the water outlet end of the instant heating pipe at the current moment, so that the water outlet temperature of the instant heating pipe approaches the target water outlet temperature.

Description

Technical Field

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

[0002] Currently, the warm water dispensing function of water dispensers is widely used in daily drinking water and beverage preparation scenarios.

[0003] However, current water dispensers are limited by the volume of the hot water tank or the heating power, and generally suffer from problems such as a single warm water temperature, slow temperature rise rate, and low warm water flow rate, making it difficult to meet users' needs for fast, large flow, stable temperature, and personalized warm water. Summary of the Invention

[0004] The main objective of this application is to provide a method, device, and computer-readable storage medium for controlling the temperature output of a drinking water device, which aims to improve the temperature rise rate, flow rate, and stability of the output water temperature of the drinking water device while meeting the user's personalized needs for the output water temperature.

[0005] This application provides a method for controlling the temperature of water output from a drinking water device. The drinking water device includes a water pump, a filter assembly, a phase change heat pump, a flow regulating valve, and an instant heating pipe. The water outlet of the water pump is connected to the water inlet of the filter assembly. The water outlet of the filter assembly is connected in parallel to a first water path flowing through the phase change heat pump and a second water path equipped with the flow regulating valve. After the first water path and the second water path are mixed through the flow regulating valve, the resulting mixed water path is connected to the water inlet of the instant heating pipe.

[0006] The method includes: In response to a warm water command including a target outlet water temperature, the first temperature of the phase change heat pump at the current moment and the pure water temperature at the outlet of the filter component at the current moment are obtained. Based on the target outlet water temperature, the first temperature, the pure water temperature, and the maximum operating power of the instant heating element, the target flow rate of the water in the drinking water device and the target mixing temperature of the mixing water path are determined; wherein, the target flow rate refers to the maximum flow rate allowed to heat the water to the target outlet water temperature under the constraint of the maximum operating power of the instant heating element; the target mixing temperature refers to a preset temperature value that matches the target flow rate, is between the pure water temperature and the first temperature, and enables the instant heating element to heat the water to the target outlet water temperature under the constraint of the maximum operating power. The pump speed is adjusted based on the target flow rate, and the operating parameters of the flow regulating valve are adjusted based on the target mixing temperature, so that the preheated water in the first water circuit and the room temperature water in the second water circuit are mixed to form preheated mixed water. After the preheated mixed water flows into the instant heating tube, the working power of the instant heating tube is dynamically adjusted according to the second temperature at the current moment of the outlet of the instant heating tube, so that the outlet temperature of the instant heating tube approaches the target outlet temperature.

[0007] In one embodiment, the step of determining the target flow rate of water in the drinking water device and the target mixing temperature of the mixing water path based on the target outlet water temperature, the first temperature, the pure water temperature, and the maximum operating power of the instant heating element includes: Using the target outlet water temperature as the control target of the instant heating tube, the target working power of the instant heating tube is determined when the temperature of the preheated mixed water is the pure water temperature and the flow rate of the water in the drinking device is the upper limit of the preset flow rate range. If the target operating power is less than or equal to the maximum operating power, then the upper limit of the flow rate is taken as the target flow rate, and the pure water temperature is taken as the target mixed water temperature. If the target working power is greater than the maximum working power, then the target outlet water temperature is used as the control target of the instant heating tube, and the required inlet water temperature of the instant heating tube is determined when the working power of the instant heating tube is the maximum working power and the flow rate of the water in the drinking device is the upper limit of the flow rate. If the required inlet water temperature is greater than or equal to the pure water temperature and less than or equal to the first temperature, then the upper limit of the flow rate is taken as the target flow rate, and the required inlet water temperature is taken as the target mixed water temperature. If the required inlet water temperature is less than the pure water temperature or greater than the first temperature, then the target outlet water temperature is used as the control target of the instant heating tube to determine the required flow rate of water in the drinking water device when the working power of the instant heating tube is the maximum working power and the temperature of the preheated mixed water is the first temperature. If the required flow rate is within the preset flow rate range, then the required flow rate is taken as the target flow rate, and the first temperature is taken as the target mixing temperature. If the required flow rate is outside the preset flow rate range, then the lower limit of the preset flow rate range is taken as the target flow rate, and the first temperature is taken as the target mixing temperature.

[0008] In one embodiment, the step of adjusting the pump speed based on the target flow rate includes: Based on the preset mapping relationship between water flow velocity and water pump speed, the target speed corresponding to the target flow velocity is obtained; Adjust the speed of the water pump to the target speed.

[0009] In one embodiment, the step of adjusting the pump speed based on the target flow rate further includes: After adjusting the speed of the water pump to the target speed, the actual flow rate of the water in the drinking water device is periodically obtained; If the actual flow velocity is greater than the upper limit of the target flow velocity range corresponding to the target flow velocity, then reduce the speed of the water pump; If the actual flow velocity is less than the lower limit of the target flow velocity range corresponding to the target flow velocity, then the speed of the water pump is increased.

[0010] In one embodiment, the operating parameters include the opening degree of the flow regulating valve, and the step of adjusting the operating parameters of the flow regulating valve based on the target mixing water temperature includes: Based on the preset mapping relationship between the mixing temperature and the opening degree of the flow regulating valve, the target opening degree corresponding to the target mixing temperature is obtained; Adjust the opening degree of the flow regulating valve to the target opening degree.

[0011] In one embodiment, the flow regulating valve is a temperature-regulating proportional valve for regulating the flow rate of the second water path; The step of adjusting the operating parameters of the flow regulating valve based on the target mixing temperature further includes: After adjusting the opening of the temperature control proportional valve to the target opening, the first actual temperature of the water inlet of the instant heating tube is periodically obtained. If the first actual temperature is less than the lower limit of the target temperature range corresponding to the target mixed water temperature, then reduce the opening of the temperature regulating proportional valve; If the first actual temperature is greater than the upper limit of the target temperature range corresponding to the target mixed water temperature, then the opening of the temperature regulating proportional valve is increased.

[0012] In one embodiment, the flow regulating valve is a mixing valve, the first water path and the second water path are respectively connected to the two inlets of the mixing valve, and the mixing outlet of the mixing valve is connected to the inlet of the instant heating pipe; The step of adjusting the operating parameters of the flow regulating valve based on the target mixing temperature further includes: After adjusting the opening of the mixing valve to the target opening, the second actual temperature of the inlet end of the instant heating pipe is periodically obtained. If the second actual temperature is less than the lower limit of the target temperature range corresponding to the target mixing temperature, then control the mixing valve to rotate towards the first water path side by a preset angle; If the second actual temperature is greater than the upper limit of the target temperature range corresponding to the target mixing temperature, then the mixing valve is controlled to rotate towards the second water path side by a preset angle.

[0013] In one embodiment, the step of adjusting the operating power of the instant heating element based on the second temperature at the outlet of the instant heating element at the current moment includes: If the second temperature is greater than the target outlet water temperature, then reduce the operating power of the instant heating tube; If the second temperature is lower than the target outlet water temperature, then increase the working power of the instant heating tube.

[0014] In addition, to achieve the above objectives, this application also provides a control device, the control device comprising: a memory, a processor, and a computer program stored in the memory and executable on the processor, the computer program being configured to implement the steps of the water dispensing temperature control method of the drinking water device as described above.

[0015] In addition, to achieve the above objectives, this application also provides a computer-readable storage medium storing a computer program, which, when executed by a processor, implements the steps of the water temperature control method for the drinking device as described above.

[0016] This application provides a method for controlling the temperature of water output from a drinking water device. The drinking water device includes a water pump, a filter assembly, a phase change heat pump, a flow regulating valve, and an instant heating element. The outlet of the water pump is connected to the inlet of the filter assembly. The outlet of the filter assembly is connected in parallel to a first water path flowing through the phase change heat pump and a second water path equipped with a flow regulating valve. The first water path and the second water path are mixed by the flow regulating valve, and the resulting mixed water path is connected to the inlet of the instant heating element. The method includes: responding to a warm water command containing a target outlet water temperature, acquiring the current first temperature of the phase change heat pump and the current pure water temperature at the outlet of the filter assembly; and determining the target flow rate of the water in the drinking water device and the target flow rate of the mixed water path based on the target outlet water temperature, the first temperature, the pure water temperature, and the maximum operating power of the instant heating element. The target mixing temperature is defined as follows: the target flow rate is the maximum flow rate allowed to heat the water to the target outlet temperature under the constraint of the maximum operating power of the instant heating tube; the target mixing temperature is a preset temperature value that matches the target flow rate, is between the pure water temperature and the first temperature, and enables the instant heating tube to heat the water to the target outlet temperature under the constraint of the maximum operating power; the pump speed is adjusted based on the target flow rate, and the operating parameters of the flow regulating valve are adjusted based on the target mixing temperature, so that the preheated water in the first water path and the room temperature water in the second water path are mixed to form preheated mixed water; after the preheated mixed water flows into the instant heating tube, the operating power of the instant heating tube is dynamically adjusted according to the second temperature at the outlet of the instant heating tube at the current moment, so that the outlet temperature of the instant heating tube approaches the target outlet temperature.

[0017] Therefore, the technical solution provided in this application sets up a first water path flowing through the phase change heat pump and a second water path equipped with a flow regulating valve in parallel, and uses the flow regulating valve to mix the two water flows, so that preheated mixed water can be obtained in the initial stage of water output. On this basis, after receiving a warm water command containing the target outlet water temperature, the system obtains the current first temperature of the phase change heat pump and the current pure water temperature at the outlet of the filter component. Based on this, under the constraint of the maximum working power of the instant heating tube, the system solves and determines the maximum allowable flow rate of the drinking water device under the current operating conditions, and drives the drinking water device to output at this maximum flow rate, thereby effectively increasing the flow rate of warm water. At the same time, a target mixed water temperature between the pure water temperature and the phase change heat pump temperature is set, so that the water flow is preheated to a better starting temperature before entering the instant heating tube, which greatly shortens the time required to rise from room temperature to the target outlet water temperature and effectively improves the temperature rise rate. Furthermore, after the preheated mixed water flows into the instant heating pipe, its working power will be dynamically adjusted using the real-time temperature at the outlet of the instant heating pipe. This will not only meet the user's personalized needs for the outlet water temperature but also compensate for heat fluctuations in real time, ensuring the stability of the final outlet water temperature.

[0018] In summary, the technical solution provided in this application can improve the temperature rise rate, outlet water flow rate, and outlet water temperature stability of the drinking water device while meeting users' personalized needs for outlet water temperature. Attached Figure Description

[0019] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 A schematic diagram of the drinking water device provided in this application using conventional methods; Figure 2 A schematic flowchart illustrating the method for controlling the outlet temperature of the drinking water device provided in the first embodiment of this application; Figure 3 A schematic diagram of the structure of the drinking water device when the flow regulating valve provided in the second embodiment of this application is a temperature proportional valve; Figure 4 A schematic diagram of the drinking water device when the flow regulating valve provided in the third embodiment of this application is a mixing valve; Figure 5 This is a schematic diagram of the hardware operating environment involved in the embodiments of this application.

[0022] The purpose, features, and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings.

[0023] Explanation of icon numbers: 1. Water pump; 2. Filter assembly; 3. Pure water temperature probe; 4. Flow meter; 51. Temperature regulating proportional valve; 52. Mixing valve; 6. Phase change heat pump; 7. Phase change heat pump heating plate; 8. Phase change heat pump temperature probe; 9. Warm water outlet valve; 10. Instant hot water inlet temperature probe; 11. Instant hot water heating element; 12. Instant hot water outlet temperature probe; 101. Processing device; 102. Read-only memory; 103. Storage device; 104. Random access memory; 105. Bus; 106. Input / output interface; 107. Input device; 108. Output device; 109. Communication device. Detailed Implementation

[0024] It should be understood that the specific embodiments described herein are merely illustrative of the technical solutions of this application and are not intended to limit this application.

[0025] To better understand the technical solution of this application, a detailed description will be provided below in conjunction with the accompanying drawings and specific implementation methods.

[0026] Currently, the warm water dispensing function of water dispensers is widely used in daily drinking water and beverage preparation scenarios.

[0027] However, current water dispensers are limited by the volume of the hot water tank or the heating power, and generally suffer from problems such as a single warm water temperature, slow temperature rise rate, and low warm water flow rate, making it difficult to meet users' needs for fast, large flow, stable temperature, and personalized warm water.

[0028] For example, the common warm water dispensing schemes of current drinking water devices can be referenced. Figure 1 Specifically, purified water flows directly through the instant heating element 11 driven by the water pump 1, where it is instantly heated to produce warm water. However, in conventional household appliances, the maximum operating power of the instant heating element is typically limited to 2200W due to the total heating power. Therefore, when the inlet water temperature is 25℃ and the target outlet water temperature is 80℃, the maximum flow rate of warm water from the drinking device can only reach 574mL / minute, a significant drawback of low flow rate, making it difficult to meet users' needs for high-volume water output. Furthermore, this solution relies entirely on the instant heating element for immediate water heating, resulting in a slow temperature rise. In the initial stage of water output, the water needs a considerable amount of time to reach the target outlet water temperature, further impacting the user experience.

[0029] For example, there is another type of water outlet solution that uses a phase change auxiliary heating element. However, in this solution, the water flow always passes through the phase change auxiliary heating element, which causes the phase change auxiliary heating element to always maximize the heating effect on the water flow. It cannot be flexibly adjusted according to different target outlet water temperatures, resulting in a narrow adjustable range of outlet water temperature. Furthermore, the power of the instant heating tube cannot be used reasonably, resulting in power waste and insufficient temperature control flexibility.

[0030] Based on this, this application provides a method for controlling the temperature of water output from a drinking water device. The drinking water device includes a water pump, a filter assembly, a phase change heat pump, a flow regulating valve, and an instant heating element. The outlet of the water pump is connected to the inlet of the filter assembly. The outlet of the filter assembly is connected in parallel to a first water path flowing through the phase change heat pump and a second water path equipped with a flow regulating valve. After the first water path and the second water path are mixed via the flow regulating valve, the resulting mixed water path is connected to the inlet of the instant heating element. The method includes: responding to a warm water command containing a target outlet water temperature, acquiring the current first temperature of the phase change heat pump and the current pure water temperature at the outlet of the filter assembly; and determining the target flow rate of the water in the drinking water device and the mixed water path based on the target outlet water temperature, the first temperature, the pure water temperature, and the maximum operating power of the instant heating element. The target mixing temperature is defined as follows: the target flow rate is the maximum flow rate allowed to heat the water to the target outlet temperature under the constraint of the maximum operating power of the instant heating tube; the target mixing temperature is a preset temperature value that matches the target flow rate, is between the pure water temperature and the first temperature, and enables the instant heating tube to heat the water to the target outlet temperature under the constraint of the maximum operating power; the pump speed is adjusted based on the target flow rate, and the operating parameters of the flow regulating valve are adjusted based on the target mixing temperature, so that the preheated water in the first water path and the room temperature water in the second water path are mixed to form preheated mixed water; after the preheated mixed water flows into the instant heating tube, the operating power of the instant heating tube is dynamically adjusted according to the second temperature at the outlet of the instant heating tube at the current moment, so that the outlet temperature of the instant heating tube approaches the target outlet temperature.

[0031] Therefore, the technical solution provided in this application sets up a first water path flowing through the phase change heat pump and a second water path equipped with a flow regulating valve in parallel, and uses the flow regulating valve to mix the two water flows, so that preheated mixed water can be obtained in the initial stage of water output. On this basis, after receiving a warm water command containing the target outlet water temperature, the system obtains the current first temperature of the phase change heat pump and the current pure water temperature at the outlet of the filter component. Based on this, under the constraint of the maximum working power of the instant heating tube, the system solves and determines the maximum allowable flow rate of the drinking water device under the current operating conditions, and drives the drinking water device to output at this maximum flow rate, thereby effectively increasing the flow rate of warm water. At the same time, a target mixed water temperature between the pure water temperature and the phase change heat pump temperature is set, so that the water flow is preheated to a better starting temperature before entering the instant heating tube, which greatly shortens the time required to rise from room temperature to the target outlet water temperature and effectively improves the temperature rise rate. Furthermore, after the preheated mixed water flows into the instant heating pipe, its working power will be dynamically adjusted using the real-time temperature at the outlet of the instant heating pipe. This will not only meet the user's personalized needs for the outlet water temperature but also compensate for heat fluctuations in real time, ensuring the stability of the final outlet water temperature.

[0032] In summary, the technical solution provided in this application can improve the temperature rise rate, outlet water flow rate, and outlet water temperature stability of the drinking water device while meeting users' personalized needs for outlet water temperature.

[0033] The subject executing the water temperature control method of the drinking water device of this application can be a control device with data processing, network communication and program operation functions. For example, it can be a control system or control circuit that can realize the above functions, or it can be the drinking water device itself including the controller. This embodiment does not specifically limit it in this regard.

[0034] The following description uses a control device as the execution subject to illustrate the various embodiments.

[0035] This application proposes a method for controlling the temperature of a drinking water device according to a first embodiment. The drinking water device includes a water pump, a filter assembly, a phase change heat exchanger, a flow regulating valve, and an instant heating element. The outlet of the water pump is connected to the inlet of the filter assembly. The outlet of the filter assembly is connected in parallel to a first water path flowing through the phase change heat exchanger and a second water path equipped with a flow regulating valve. The first and second water paths are mixed via the flow regulating valve, and the resulting mixed water path is connected to the inlet of the instant heating element. Please refer to... Figure 2 The method for controlling the temperature of the drinking water device may include steps S10 to S40: Step S10: In response to a warm water command including the target outlet water temperature, obtain the first temperature of the phase change heat pump at the current moment and the pure water temperature of the outlet end of the filter component at the current moment. It should be noted that the target water temperature is the user-set desired warm water temperature, and the warm water command is the water dispensing request triggered by the user through the touch panel of the water dispenser, mobile APP, or voice interaction module. The first temperature is the measured temperature of the phase change material in the phase change heat tank at the moment the water dispensing command is issued, and the pure water temperature is the measured temperature of the room temperature pure water flowing out of the filter component without any heating at the moment the water dispensing command is issued. In order for the phase change heat tank to heat the flowing water, the phase change heat tank heating plate installed on the phase change heat tank needs to operate when the water dispenser stops dispensing water to heat the phase change heat storage material in the phase change heat tank.

[0036] The current temperature of the phase change heat pump and the current pure water temperature at the outlet of the filter assembly can be collected by temperature sensors installed on the phase change heat pump and at the outlet of the filter assembly, respectively.

[0037] Step S20: Based on the target outlet water temperature, the first temperature, the pure water temperature, and the maximum operating power of the instant heating element, determine the target flow rate of the water in the drinking water device and the target mixing temperature of the mixing water path; wherein, the target flow rate refers to the maximum flow rate allowed to heat the water to the target outlet water temperature under the constraint of the maximum operating power of the instant heating element; the target mixing temperature refers to a preset temperature value that matches the target flow rate, is between the pure water temperature and the first temperature, and enables the instant heating element to heat the water to the target outlet water temperature under the constraint of the maximum operating power. It should be noted that the maximum operating power of the instant heating element refers to the maximum power that the instant heating element can output under the rated voltage (e.g., 220V), such as 2200W.

[0038] In one feasible implementation, step S20 may include steps S21 to S28: Step S21: Using the target outlet water temperature as the control target of the instant heating tube, determine the target working power of the instant heating tube when the temperature of the preheated mixed water is the pure water temperature and the flow rate of the water in the drinking water device is the upper limit of the preset flow rate range. It should be noted that the preset flow rate range is the pre-set flow rate interval within which the water pump of the drinking water device can operate safely and stably. The upper limit of the preset flow rate range is the maximum flow rate within the preset flow rate range, and the lower limit of the preset flow rate range is the minimum flow rate within the preset flow rate range. The target operating power refers to the heating power required to heat the water to the target outlet water temperature when the inlet water temperature of the instant heating tube is the pure water temperature and the flow rate is at the upper limit of the flow rate.

[0039] When using the target outlet water temperature as the control target for the instant heating tube, and determining the target operating power corresponding to the temperature of the preheated mixed water being the pure water temperature, and the water flow velocity in the drinking water device being the upper limit of the preset flow velocity range, a relationship table can be used to record the operating power corresponding to different outlet water temperatures, inlet water temperatures, and water flow velocities in advance. Thus, the target operating power can be quickly determined by looking up the table; alternatively, the target operating power can be calculated using the water flow temperature rise calculation formula. This embodiment does not specifically limit this method.

[0040] Step S22: If the target working power is less than or equal to the maximum working power, then the upper limit of the flow rate is taken as the target flow rate, and the pure water temperature is taken as the target mixed water temperature. Understandably, if the target operating power is less than or equal to the maximum operating power, it means that the instant heating element can directly heat room temperature pure water to the target outlet water temperature at the maximum flow rate allowed by the system, without the need for preheating by the phase change heat exchanger. Therefore, the upper limit of the preset flow rate range can be selected as the target flow rate to maximize the outlet water flow and improve the user experience; and the pure water temperature can be selected as the target mixing temperature to eliminate the mixing step and simplify the control logic.

[0041] Step S23: If the target working power is greater than the maximum working power, the target outlet water temperature is used as the control target of the instant heating tube. The required inlet water temperature is determined when the working power of the instant heating tube is the maximum working power and the flow rate of the water in the drinking water device is the upper limit of the flow rate. It should be noted that the inlet water demand temperature refers to the initial inlet water temperature required to heat the water flow to the target outlet water temperature when the instant heating pipe is operating at its maximum power and the flow rate is at the upper limit value.

[0042] When using the target outlet water temperature as the control target for the instant heating element, and determining the required inlet water temperature at the inlet end of the instant heating element when its operating power is at its maximum and the water flow velocity in the drinking device is at its upper limit, a relationship table can be used to record the inlet water temperature corresponding to different outlet water temperatures, operating power, and water flow velocities in advance. Thus, the required inlet water temperature can be quickly determined by looking up the table. Alternatively, the required inlet water temperature can be calculated in reverse using the water flow temperature rise calculation formula. This embodiment does not impose specific limitations on this method.

[0043] Step S25: If the required inlet water temperature is greater than or equal to the pure water temperature and less than or equal to the first temperature, then the upper limit of the flow rate is taken as the target flow rate, and the required inlet water temperature is taken as the target mixed water temperature. Understandably, if the required inlet water temperature is greater than or equal to the pure water temperature but less than or equal to the first temperature, it means that although the instantaneous heating element cannot directly heat room temperature pure water to the target outlet water temperature at the system's maximum allowable flow rate, it can heat the water flow to the target outlet water temperature with the help of preheating by the phase change heat exchanger, without needing to reduce the flow rate. Therefore, the upper limit of the preset flow rate range can be selected as the target flow rate to maximize the outlet water flow and improve the user experience; and the required inlet water temperature can be selected as the target mixing temperature so that the instantaneous heating element can heat the water flow to the target outlet water temperature when operating at maximum power, achieving maximum power utilization.

[0044] Step S26: If the required water temperature is less than the pure water temperature or greater than the first temperature, the target water temperature is used as the control target of the instant heating tube. The required flow rate of the water in the drinking water device is determined when the working power of the instant heating tube is the maximum working power and the temperature of the preheated mixed water is the first temperature. It should be noted that the required flow rate refers to the water flow rate required to heat the water to the target outlet water temperature when the instant heating tube is operating at its maximum power and the inlet water temperature is the first temperature.

[0045] When using the target outlet water temperature as the control target for the instant heating tube, and determining the required flow rate of the water in the drinking water device when the instant heating tube operates at its maximum power and the preheated mixed water temperature is the first temperature, a relationship table can be used to record the water flow rate corresponding to different outlet water temperatures, operating power, and inlet water temperatures in advance. Thus, the required flow rate can be quickly determined by looking up the table; alternatively, the required flow rate can be calculated using the water flow temperature rise calculation formula. This embodiment does not impose specific limitations on this method.

[0046] Step S27: If the required flow rate is within the preset flow rate range, then the required flow rate is taken as the target flow rate, and the first temperature is taken as the target mixing temperature. Understandably, if the required flow rate is within the preset flow rate range, it means that at that required flow rate, the instantaneous heating element can heat the preheated mixed water at the first temperature to the target outlet water temperature at its maximum operating power. Therefore, the first temperature can be selected as the target mixed water temperature to maximize the utilization of the preheating capacity of the phase change heat pump and reduce the load on the instantaneous heating element; and the required flow rate can be selected as the target flow rate to maximize the outlet water flow rate while ensuring the heating effect.

[0047] Step S28: If the required flow rate is outside the preset flow rate range, the lower limit of the preset flow rate range is taken as the target flow rate, and the first temperature is taken as the target mixing temperature.

[0048] Understandably, if the required flow rate is outside the preset flow rate range, it means that if the water dispenser dispenses water at that required flow rate, it will be lower than the minimum acceptable flow rate for the user, or exceed the maximum capacity of the water dispenser. Therefore, the lower limit of the preset flow rate range can be selected as the target flow rate to ensure the user's basic experience with the water dispenser; and the first temperature can be selected as the target mixing temperature to maximize the preheating capacity of the phase change heat pump and ensure that the instant heating element can raise the water temperature to the target outlet temperature at the minimum flow rate.

[0049] This embodiment does not specifically limit the implementation of step S20. For example, in other feasible implementations, the target outlet water temperature and the maximum working power of the instantaneous heating element can be used as constraints to calculate the corresponding mixing water temperature at different flow rates. Using a pre-established correlation model of "flow rate-mixing water temperature-temperature rise time", the flow rate value with the shortest temperature rise time can be selected as the target flow rate. The mixing water temperature corresponding to the target flow rate, calculated with the target outlet water temperature and the maximum working power of the instantaneous heating element as constraints, can be used as the target mixing water temperature.

[0050] Step S30: Adjust the pump speed based on the target flow rate and adjust the operating parameters of the flow regulating valve based on the target mixing temperature, so that the preheated water in the first water path and the room temperature water in the second water path are mixed to form preheated mixed water. It should be noted that the higher the pump speed, the faster the water flow. The preheated mixed water is the water flow preheated by the phase change heat exchanger in the first water circuit and the room temperature pure water in the second water circuit, which is mixed through a flow regulating valve to obtain the water flow.

[0051] In one feasible implementation, the step of adjusting the pump speed based on the target flow rate may include steps S31-S32: Step S31: Based on the preset mapping relationship between water flow velocity and water pump speed, obtain the target speed corresponding to the target flow velocity; Step S32: Adjust the speed of the water pump to the target speed.

[0052] It should be noted that the mapping relationship between water flow velocity and pump speed can be recorded using relational tables, relational curves, key-value pairs, etc., and this embodiment does not impose specific limitations on this. The target speed is the pump speed corresponding to the target flow velocity, determined using the mapping relationship between water flow velocity and pump speed.

[0053] This implementation method pre-sets the mapping relationship between water flow velocity and water pump speed. Therefore, in practical applications, this mapping relationship can be directly used to quickly and accurately determine the target speed that the water pump needs to be adjusted to so that the water flow velocity in the drinking water device reaches the target flow velocity. This effectively improves the adjustment efficiency and accuracy of the water pump speed, thereby ensuring that the water flow velocity of the drinking water device can be quickly stabilized within the target flow velocity range. This provides a timely and reliable prerequisite for subsequent precise temperature control based on stable flow rate.

[0054] In another feasible implementation, the step of adjusting the pump speed based on the target flow rate may further include steps S33 to S35: Step S33: After adjusting the speed of the water pump to the target speed, periodically obtain the actual flow rate of the water in the drinking water device. It should be noted that the actual flow rate is the instantaneous or average flow rate of the water in the water circuit of the drinking device, which is measured in real time by a flow meter. When periodically obtaining the actual flow rate of the water in the drinking device, the actual flow rate can be obtained according to the default period or according to the period flexibly set by the user according to the actual situation. This embodiment does not make a specific limitation on this.

[0055] Step S34: If the actual flow velocity is greater than the upper limit of the target flow velocity range corresponding to the target flow velocity, then reduce the speed of the water pump. Step S35: If the actual flow velocity is less than the lower limit of the target flow velocity range corresponding to the target flow velocity, then increase the speed of the water pump.

[0056] It should be noted that the target flow rate range is an allowable deviation interval set with the target flow rate as the center. This is used to avoid frequent triggering of speed adjustment due to small flow rate fluctuations, thus ensuring adjustment stability. The upper limit of the target flow rate range is the maximum flow rate within the target flow rate range, and the lower limit of the target flow rate range is the minimum flow rate within the target flow rate range.

[0057] When reducing the speed of the water pump, the speed can be reduced by a set amount or percentage; or the speed can be reduced by a flexibly determined amount or percentage (for example, the corresponding amount or percentage can be determined based on the difference between the actual flow rate and the target flow rate). This embodiment does not impose specific limitations on this.

[0058] When increasing the speed of the water pump, the speed can be increased by a set amount or percentage; or by a flexibly determined amount or percentage (for example, the amount or percentage can be determined based on the difference between the actual flow rate and the target flow rate). This embodiment does not impose any specific limitations on this.

[0059] This implementation method, after adjusting the water pump speed to the target speed, periodically collects the actual flow velocity and compares it with the target flow velocity range, achieving closed-loop fine-tuning control of the water pump speed. This effectively avoids deviations in actual flow velocity from the target flow velocity caused by external factors such as water pressure fluctuations, pump operating losses, and changes in ambient temperature, ensuring that the outlet water flow velocity remains stable within a reasonable fluctuation range over a long period. This not only further improves the stability and accuracy of the outlet water flow velocity, preventing excessively high or low flow velocities from affecting the user experience, but also provides a continuous and stable water flow basis for subsequent precise adjustment of the mixing ratio by the flow regulating valve and stable temperature control of the instant heating element. It reduces problems such as mixing temperature deviation and outlet water temperature fluctuation caused by flow velocity fluctuations. At the same time, deviation correction can be automatically completed without manual intervention, which reduces the control difficulty of the control equipment and improves the reliability and robustness of the entire warm water control process, ensuring that the drinking water device can output a large flow of warm water that meets the requirements for a long period of time.

[0060] The above are only two feasible implementation methods of adjusting the pump speed based on the target flow rate provided in this embodiment. This embodiment does not specifically limit its specific implementation method.

[0061] In one feasible implementation, the operating parameters may include the opening degree of the flow regulating valve, and the step of adjusting the operating parameters of the flow regulating valve based on the target mixing water temperature may include steps S36-S37: Step S36: Based on the preset mapping relationship between the mixing water temperature and the flow regulating valve opening, obtain the target opening corresponding to the target mixing water temperature; Step S37: Adjust the opening of the flow regulating valve to the target opening.

[0062] It should be noted that the mapping relationship between the mixing water temperature and the flow control valve opening can be recorded using relational tables, relational curves, key-value pairs, etc., and this embodiment does not impose specific limitations on this. The target opening is the flow control valve opening corresponding to the target mixing water temperature, determined using the mapping relationship between the mixing water temperature and the flow control valve opening.

[0063] This implementation pre-defines the mapping relationship between the mixing water temperature and the opening degree of the flow regulating valve. Therefore, in practical applications, this mapping relationship can be directly used to quickly and accurately determine the target opening degree of the flow regulating valve to achieve the target mixing water temperature. This effectively reduces the trial-and-error cost of water temperature adjustment, significantly improves the response efficiency and accuracy of temperature control, and allows the control equipment to directly send drive signals to the flow regulating valve to precisely adjust it to the target opening degree, achieving rapid and stable control of the mixed water temperature and ensuring that the outlet water temperature always meets the user's needs.

[0064] This embodiment does not specifically limit the implementation of the step of adjusting the operating parameters of the flow regulating valve based on the target mixing temperature. For example, in other feasible embodiments, after adjusting the opening of the flow regulating valve to the target opening, the operating parameters of the flow regulating valve can be periodically adjusted according to the actual temperature of the inlet of the instantaneous heating pipe, so that the temperature of the inlet of the instantaneous heating pipe is stably maintained near the target mixing temperature.

[0065] Step S40: After the preheated mixed water flows into the instant heating tube, the working power of the instant heating tube is dynamically adjusted according to the second temperature at the current moment of the outlet of the instant heating tube, so that the outlet temperature of the instant heating tube approaches the target outlet temperature.

[0066] It should be noted that the second temperature refers to the measured water temperature at the outlet of the instant heating tube after heating is completed. When dynamically adjusting the working power of the instant heating tube based on the second temperature at the outlet of the instant heating tube at the current moment, the working power of the instant heating tube can be adjusted in real time according to the temperature at the outlet of the instant heating tube; or it can be adjusted periodically according to the temperature at the outlet of the instant heating tube at a certain time interval. This embodiment does not specifically limit this.

[0067] In one feasible implementation, step S40 may include steps S41-S42: Step S41: If the second temperature is greater than the target outlet water temperature, reduce the working power of the instant heating tube. Step S42: If the second temperature is lower than the target outlet water temperature, increase the working power of the instant heating tube.

[0068] When reducing the working power of the instant heating element, the working power of the instant heating element can be reduced by a set power reduction amount or power reduction ratio; or the working power of the instant heating element can be reduced by a flexibly determined power reduction amount or power reduction ratio (for example, based on the difference between the second temperature and the target outlet water temperature). This embodiment does not make specific limitations on this.

[0069] When increasing the working power of the instant heating element, the working power of the instant heating element can be increased by a set power increase amount or power increase ratio; or the working power of the instant heating element can be increased by a flexibly determined power increase amount or power increase ratio (for example, the corresponding power increase amount or power increase ratio is determined based on the difference between the second temperature and the target outlet water temperature). This embodiment does not make specific limitations on this.

[0070] As can be seen from the above, the technical solution provided in this embodiment sets up a first water path flowing through the phase change heat pump and a second water path equipped with a flow regulating valve in parallel, and uses the flow regulating valve to mix the two water flows, so that preheated mixed water can be obtained in the initial stage of water output. On this basis, after receiving a warm water command containing the target outlet water temperature, the system obtains the current first temperature of the phase change heat pump and the current pure water temperature at the outlet of the filter component. Based on this, under the constraint of the maximum working power of the instant heating tube, the maximum allowable flow rate of the drinking water device under the current operating conditions is solved and determined, and the drinking water device is driven to output at the maximum flow rate, thereby effectively increasing the flow rate of warm water. At the same time, a target mixed water temperature between the pure water temperature and the phase change heat pump temperature is set, so that the water flow is preheated to a better starting temperature before entering the instant heating tube, which greatly shortens the time required to rise from room temperature to the target outlet water temperature and effectively improves the temperature rise rate. Furthermore, after the preheated mixed water flows into the instant heating pipe, its working power will be dynamically adjusted using the real-time temperature at the outlet of the instant heating pipe. This will not only meet the user's personalized needs for the outlet water temperature but also compensate for heat fluctuations in real time, ensuring the stability of the final outlet water temperature.

[0071] Therefore, the technical solution provided in this embodiment can meet users' personalized needs for water temperature while improving the temperature rise rate, water flow rate and water temperature stability of the drinking water device.

[0072] In addition, by storing thermal energy in the phase change material in advance, the phase change heat pump and the instant heating pipe do not need to store water for a long time when the water is discharged, thus not affecting the freshness of the water too much.

[0073] Based on the first embodiment described above, a second embodiment of the water temperature control method for the drinking water device of this application is proposed. For the second embodiment, please refer to... Figure 3 (In the diagram, 1 is a water pump, 2 is a filter assembly, 3 is a pure water temperature probe, 4 is a flow meter, 51 is a temperature regulating proportional valve, 6 is a phase change heat pump, 7 is a phase change heat pump heating plate, 8 is a phase change heat pump temperature probe, 9 is a warm water outlet valve, 10 is an instant hot water inlet temperature probe, 11 is an instant hot water heating pipe, and 12 is an instant hot water outlet temperature probe. Thus, tap water flows through water pump 1 for pressurization, then through filter assembly 2 to output pure water, which flows through flow meter 4, and then splits into two paths. One path passes through the temperature regulating proportional valve...) The temperature proportional valve 51 has one branch, which flows through the phase change heat sink 6 for preheating. The two branches then merge and flow through the warm water outlet valve 9, and then through the instant hot water inlet temperature probe 10 to measure the inlet water temperature of the instant hot water heating tube 11. After that, the water is heated to the target outlet water temperature through the instant hot water heating tube 11. The flow regulating valve is a temperature proportional valve used to regulate the flow rate of the second water path. The step of adjusting the working parameters of the flow regulating valve based on the target mixing water temperature may also include steps S301 to S303: Step S301: After adjusting the opening of the temperature control proportional valve to the target opening, periodically obtain the first actual temperature of the water inlet of the instant heating tube. It should be noted that the first actual temperature refers to the actual temperature value of the preheated mixed water measured in real time by a temperature sensor at the inlet of the instant heating element, when the flow regulating valve is a temperature-adjusting proportional valve used to regulate the flow of the second water circuit. When periodically acquiring the first actual temperature at the inlet of the instant heating element, the first actual temperature at the inlet of the instant heating element can be acquired according to the default cycle, or according to a cycle flexibly set by the user according to the actual situation. This embodiment does not specifically limit this.

[0074] Step S302: If the first actual temperature is less than the lower limit of the target temperature range corresponding to the target mixed water temperature, then reduce the opening of the temperature control proportional valve. Step S303: If the first actual temperature is greater than the upper limit of the target temperature range corresponding to the target mixing temperature, then increase the opening of the temperature regulating proportional valve.

[0075] It should be noted that the target temperature range is an allowable deviation range set with the target mixing temperature as the center.

[0076] When reducing the opening of the temperature control proportional valve, the opening can be reduced by a set amount or percentage; or the opening can be reduced by a flexibly determined amount or percentage (for example, the corresponding amount or percentage can be determined based on the difference between the first actual temperature and the target mixing temperature). This embodiment does not impose any specific limitations on this.

[0077] When increasing the opening of the temperature control proportional valve, the opening can be increased by a set amount or percentage; or the opening can be increased by a flexibly determined amount or percentage (for example, the corresponding amount or percentage can be determined based on the difference between the first actual temperature and the target mixing temperature). This embodiment does not impose any specific limitations on this.

[0078] This embodiment, after adjusting the opening of the temperature-regulating proportional valve to the target opening, periodically acquires the real-time temperature at the inlet of the heating element and compares it with the allowable range of the target mixing temperature to dynamically adjust the opening of the temperature-regulating proportional valve. This maintains the water flow rate in the drinking water device near the target flow rate, effectively avoiding actual opening deviations caused by external factors such as water supply pressure fluctuations, valve actuator lag, and water temperature changes, ensuring the consistency and accuracy of flow regulation. This not only further improves the stability and controllability of flow control, avoiding unstable water flow and water temperature fluctuations caused by opening deviations, but also provides a continuous and stable water flow basis for subsequent stable temperature control of the instant heating element and precise adjustment of the outlet water temperature, reducing problems such as outlet water temperature drift and insufficient temperature control accuracy caused by flow fluctuations. Furthermore, the technical solution provided in this embodiment can automatically complete the opening correction without manual intervention, reducing the complexity of the control logic and improving the reliability and robustness of the entire temperature control process, ensuring that the drinking water device can stably output warm water that meets the temperature requirements for a long period.

[0079] Based on the first embodiment described above, a third embodiment of the water temperature control method for the drinking water device of this application is proposed. In the third embodiment, please refer to... Figure 4 (In the diagram, 1 is a water pump, 2 is a filter assembly, 3 is a pure water temperature probe, 4 is a flow meter, 52 is a mixing valve, 6 is a phase change heat pump, 7 is a phase change heat pump heating plate, 8 is a phase change heat pump temperature probe, 9 is a warm water outlet valve, 10 is an instant hot water inlet temperature probe, 11 is an instant hot water heating pipe, and 12 is an instant hot water outlet temperature probe. Thus, tap water flows through water pump 1 for pressurization, then through filter assembly 2 to output pure water, flows through flow meter 4, and then splits into two paths: one path flows through mixing valve 52, and the other path flows through phase change heat pump 6 for preheating.) After the water valve 52 merges the two water flows, the mixed water flows through the warm water outlet valve 9, then through the instant hot water inlet temperature probe 10 to measure the inlet temperature of the instant hot water heating tube 11, and then heats the water to the target outlet temperature through the instant hot water heating tube 11. The flow regulating valve is a mixing valve, with the first water path and the second water path connected to the two inlets of the mixing valve, and the mixing outlet of the mixing valve connected to the inlet of the instant hot water heating tube; the step of adjusting the working parameters of the flow regulating valve based on the target mixing temperature may also include steps S304~S306: Step S304: After adjusting the opening of the mixing valve to the target opening, periodically obtain the second actual temperature at the inlet of the instant heating pipe. The first actual temperature refers to the actual temperature value of the preheated mixed water measured in real time by a temperature sensor at the inlet end of the instant heating element when the flow regulating valve is a mixing valve. When periodically acquiring the second actual temperature at the inlet end of the instant heating element, the second actual temperature at the inlet end of the instant heating element can be acquired according to the default cycle, or according to the cycle flexibly set by the user according to the actual situation. This embodiment does not specifically limit this.

[0080] Step S305: If the second actual temperature is less than the lower limit of the target temperature range corresponding to the target mixing temperature, then control the mixing valve to rotate towards the first water path side by a preset angle. Step S306: If the second actual temperature is greater than the upper limit of the target temperature range corresponding to the target mixing temperature, then control the mixing valve to rotate to the second water path side by a preset angle.

[0081] It should be noted that controlling the mixing valve to rotate towards the first water path side means controlling the valve core or actuator of the mixing valve to rotate or move in a direction that increases the flow rate from the first water path (hot water flowing through the phase change heat exchanger) while decreasing the flow rate from the second water path (normal temperature water). Controlling the mixing valve to rotate towards the second water path side means controlling the valve core or actuator of the mixing valve to rotate or move in a direction that increases the flow rate from the second water path while decreasing the flow rate from the first water path. The preset angle refers to a fixed mechanical angle or electronic step amount that controls the rotation of the mixing valve each time temperature correction is performed. It can be a default value or can be flexibly set by the user according to the actual situation. This embodiment does not specifically limit this.

[0082] In this embodiment, after adjusting the opening of the mixing valve to the target opening, the real-time temperature of the heating element's inlet is periodically acquired and compared with the allowable range of the target mixing temperature. This controls the mixing valve to rotate a preset angle towards the first or second water path to adjust the flow rate. This ensures the water flow velocity in the drinking water device remains near the target velocity, effectively avoiding actual opening deviations caused by external factors such as fluctuations in water supply pressure, lag in valve actuator action, and water temperature changes. This ensures the consistency and accuracy of flow regulation. This not only further improves the stability and controllability of flow control, avoiding unstable water flow and temperature fluctuations caused by opening deviations, but also provides a stable and reliable water temperature basis for stable heat exchange and precise control of the outlet water temperature in subsequent instant heating elements, reducing problems such as heat exchange efficiency fluctuations and temperature control deviations caused by water temperature fluctuations. Meanwhile, the technical solution provided in this embodiment can automatically complete temperature compensation adjustment without manual intervention, which simplifies the control logic of temperature control adjustment and improves the reliability and robustness of the entire water mixing temperature control process, ensuring that the drinking water device can output warm water that meets the temperature requirements for a long time.

[0083] This application also provides a control device, which may include: at least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores instructions executable by the at least one processor, the instructions being executed by the at least one processor to enable the at least one processor to perform the water temperature control method of the drinking device in the above embodiments.

[0084] The following is for reference. Figure 5 It shows a schematic diagram of the structure of a control device suitable for implementing the embodiments of this application. Figure 5 The control device shown is merely an example and should not impose any limitations on the functionality and scope of use of the embodiments of this application.

[0085] like Figure 5 As shown, the control device may include a processing unit 101 (e.g., a central processing unit, a graphics processing unit, etc.), which can perform various appropriate actions and processes according to a program stored in read-only memory 102 or a program loaded from storage device 103 into random access memory 104. Random access memory 104 also stores various programs and data required for the operation of the control device. The processing unit 101, read-only memory 102, and random access memory 104 are interconnected via bus 105. Input / output interface 106 is also connected to bus 105. Typically, the following systems can be connected to input / output interface 106: input devices 107 including, for example, touch screens, touchpads, keyboards, mice, image sensors, microphones, accelerometers, gyroscopes, etc.; output devices 108 including, for example, liquid crystal displays (LCDs), speakers, vibrators, etc.; storage devices 103 including, for example, magnetic tapes, hard disks, etc.; and communication devices 109. Communication device 109 allows the control device to communicate wirelessly or wiredly with other devices to exchange data. Although the diagram shows control equipment with various systems, it should be understood that it is not required to implement or have all of the systems shown. More or fewer systems may be implemented alternatively.

[0086] In particular, according to embodiments of this disclosure, the processes described above with reference to the flowcharts can be implemented as computer software programs. For example, embodiments of this disclosure include a computer program product comprising a computer program carried on a computer-readable medium, the computer program containing program code for performing the methods shown in the flowcharts. In such embodiments, the computer program can be downloaded and installed from a network via a communication device, or installed from storage device 103, or installed from read-only memory 102. When the computer program is executed by processing device 101, it performs the functions defined in the methods of the embodiments of this application.

[0087] The control device provided in this application adopts the water temperature control method for the drinking device in the above embodiments, which can improve the temperature rise rate, water flow rate, and water temperature stability of the drinking device while meeting the user's personalized needs for water temperature. Compared with the prior art, the beneficial effects of the control device provided in this application are the same as those of the water temperature control method for the drinking device provided in the above embodiments, and other technical features of the control device are the same as those disclosed in the methods of the above embodiments, and will not be repeated here.

[0088] It should be understood that various parts of the embodiments of this application can be implemented using hardware, software, firmware, or a combination thereof. In the description of the above embodiments, specific features, structures, materials, or characteristics can be combined in any suitable manner in one or more embodiments or examples.

[0089] The above description is merely a specific implementation of the embodiments of this application, but the protection scope of the embodiments of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the protection scope of the embodiments of this application. Therefore, the protection scope of the embodiments of this application should be determined by the protection scope of the above claims.

[0090] This application also provides a computer-readable storage medium storing a computer program that can run on a processor. The computer program is used to execute the water temperature control method of the drinking device in the above embodiments.

[0091] The computer-readable storage medium provided in this application embodiment may be, for example, a USB flash drive, but is not limited to, electrical, magnetic, optical, electromagnetic, infrared, or semiconductor systems or devices, or any combination thereof. More specific examples of computer-readable storage media may include, but are not limited to: electrical connections with one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fibers, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof. In this embodiment, the computer-readable storage medium may be any tangible medium containing or storing a program that can be used by or in conjunction with an instruction execution system, system, or device. The program code contained on the computer-readable storage medium may be transmitted using any suitable medium, including but not limited to: wires, optical cables, RF (Radio Frequency), etc., or any suitable combination thereof.

[0092] The aforementioned computer-readable storage medium may be included in the control device; or it may exist independently and not assembled into the control device.

[0093] The aforementioned computer-readable storage medium carries one or more programs that, when executed by a control device, cause the control device to: in response to a warm water command including a target outlet water temperature, acquire the first temperature of the phase change heat pump at the current moment and the pure water temperature of the outlet end of the filter component at the current moment; determine the target flow rate of the water in the drinking water device and the target mixing temperature of the mixing circuit based on the target outlet water temperature, the first temperature, the pure water temperature, and the maximum operating power of the instant heating element; wherein, the target flow rate refers to the maximum flow rate allowed to heat the water to the target outlet water temperature under the constraint of the maximum operating power of the instant heating element. Speed; Target mixing temperature refers to a preset temperature value that matches the target flow rate, is between the pure water temperature and the first temperature, and enables the instant heating tube to heat the water flow to the target outlet temperature under the constraint of maximum working power; The pump speed is adjusted based on the target flow rate, and the working parameters of the flow regulating valve are adjusted based on the target mixing temperature, so that the preheated water in the first water path and the room temperature water in the second water path are mixed to form preheated mixed water; After the preheated mixed water flows into the instant heating tube, the working power of the instant heating tube is dynamically adjusted according to the second temperature at the outlet of the instant heating tube at the current moment, so that the outlet temperature of the instant heating tube approaches the target outlet temperature.

[0094] Computer program code for performing the operations of this disclosure can be written in one or more programming languages ​​or a combination thereof, including object-oriented programming languages ​​such as Java, Smalltalk, and C++, and conventional procedural programming languages ​​such as the "C" language or similar programming languages. The program code can be executed entirely on the user's computer, partially on the user's computer, as a standalone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving remote computers, the remote computer can be connected to the user's computer via any type of network—including a local area network (LAN) or a wide area network (WAN)—or can be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0095] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to various embodiments of this application. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions indicated in the blocks may occur in a different order than those indicated in the drawings. For example, two consecutively indicated blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, can be implemented using a dedicated hardware-based system that performs the specified function or operation, or using a combination of dedicated hardware and computer instructions.

[0096] The modules described in the embodiments of this application can be implemented in software or hardware. The names of the modules do not necessarily limit the functionality of the unit itself.

[0097] The computer-readable storage medium provided in this application embodiment stores computer-readable program instructions for executing the above-described method for controlling the temperature of the drinking water device. This method can improve the temperature rise rate, flow rate, and temperature stability of the drinking water device while meeting users' personalized needs for water temperature. Compared with the prior art, the beneficial effects of the computer-readable storage medium provided in this application embodiment are the same as those of the temperature control method for the drinking water device provided in the above embodiments, and will not be repeated here.

[0098] This application also provides a computer program product, including a computer program that, when executed by a processor, implements the steps of the above-described method for controlling the temperature of a drinking water device.

[0099] The computer program product provided in this application can improve the temperature rise rate, hot water flow rate, and hot water temperature stability of the drinking water device while meeting users' personalized needs for hot water temperature. Compared with the prior art, the beneficial effects of the computer program product provided in this application are the same as those of the hot water control method for the drinking water device provided in the above embodiments, and will not be repeated here.

[0100] The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent scope of this application.

Claims

1. A method for controlling the temperature of water dispensed from a drinking water device, characterized in that, The drinking water device includes a water pump, a filter assembly, a phase change heat pump, a flow regulating valve, and an instant heating tube. The outlet of the water pump is connected to the inlet of the filter assembly. The outlet of the filter assembly is connected in parallel to a first water path that flows through the phase change heat pump and a second water path equipped with the flow regulating valve. After the first water path and the second water path are mixed by the flow regulating valve, the resulting mixed water path is connected to the inlet of the instant heating tube. The method includes: In response to a warm water command including a target outlet water temperature, the first temperature of the phase change heat pump at the current moment and the pure water temperature at the outlet of the filter component at the current moment are obtained. Based on the target outlet water temperature, the first temperature, the pure water temperature, and the maximum operating power of the instant heating element, the target flow rate of the water in the drinking water device and the target mixing temperature of the mixing water path are determined; wherein, the target flow rate refers to the maximum flow rate allowed to heat the water to the target outlet water temperature under the constraint of the maximum operating power of the instant heating element; the target mixing temperature refers to a preset temperature value that matches the target flow rate, is between the pure water temperature and the first temperature, and enables the instant heating element to heat the water to the target outlet water temperature under the constraint of the maximum operating power. The pump speed is adjusted based on the target flow rate, and the operating parameters of the flow regulating valve are adjusted based on the target mixing temperature, so that the preheated water in the first water circuit and the room temperature water in the second water circuit are mixed to form preheated mixed water. After the preheated mixed water flows into the instant heating tube, the working power of the instant heating tube is dynamically adjusted according to the second temperature at the current moment of the outlet of the instant heating tube, so that the outlet temperature of the instant heating tube approaches the target outlet temperature.

2. The method as described in claim 1, characterized in that, The step of determining the target flow rate of water in the drinking water device and the target mixing temperature of the mixing circuit based on the target outlet water temperature, the first temperature, the pure water temperature, and the maximum operating power of the instant heating element includes: Using the target outlet water temperature as the control target of the instant heating tube, the target working power of the instant heating tube is determined when the temperature of the preheated mixed water is the pure water temperature and the flow rate of the water in the drinking device is the upper limit of the preset flow rate range. If the target operating power is less than or equal to the maximum operating power, then the upper limit of the flow rate is taken as the target flow rate, and the pure water temperature is taken as the target mixed water temperature. If the target working power is greater than the maximum working power, then the target outlet water temperature is used as the control target of the instant heating tube, and the required inlet water temperature of the instant heating tube is determined when the working power of the instant heating tube is the maximum working power and the flow rate of the water in the drinking device is the upper limit of the flow rate. If the required inlet water temperature is greater than or equal to the pure water temperature and less than or equal to the first temperature, then the upper limit of the flow rate is taken as the target flow rate, and the required inlet water temperature is taken as the target mixed water temperature. If the required inlet water temperature is less than the pure water temperature or greater than the first temperature, then the target outlet water temperature is used as the control target of the instant heating tube to determine the required flow rate of water in the drinking water device when the working power of the instant heating tube is the maximum working power and the temperature of the preheated mixed water is the first temperature. If the required flow rate is within the preset flow rate range, then the required flow rate is taken as the target flow rate, and the first temperature is taken as the target mixing temperature. If the required flow rate is outside the preset flow rate range, then the lower limit of the preset flow rate range is taken as the target flow rate, and the first temperature is taken as the target mixing temperature.

3. The method as described in claim 1, characterized in that, The step of adjusting the pump speed based on the target flow rate includes: Based on the preset mapping relationship between water flow velocity and water pump speed, the target speed corresponding to the target flow velocity is obtained; Adjust the speed of the water pump to the target speed.

4. The method as described in claim 3, characterized in that, The step of adjusting the pump speed based on the target flow rate further includes: After adjusting the speed of the water pump to the target speed, the actual flow rate of the water in the drinking water device is periodically obtained; If the actual flow velocity is greater than the upper limit of the target flow velocity range corresponding to the target flow velocity, then reduce the speed of the water pump; If the actual flow velocity is less than the lower limit of the target flow velocity range corresponding to the target flow velocity, then the speed of the water pump is increased.

5. The method as described in claim 1, characterized in that, The operating parameters include the opening degree of the flow regulating valve, and the step of adjusting the operating parameters of the flow regulating valve based on the target mixing water temperature includes: Based on the preset mapping relationship between the mixing temperature and the opening degree of the flow regulating valve, the target opening degree corresponding to the target mixing temperature is obtained; Adjust the opening degree of the flow regulating valve to the target opening degree.

6. The method as described in claim 5, characterized in that, The flow regulating valve is a temperature-regulating proportional valve used to regulate the flow rate of the second water circuit. The step of adjusting the operating parameters of the flow regulating valve based on the target mixing temperature further includes: After adjusting the opening of the temperature control proportional valve to the target opening, the first actual temperature of the water inlet of the instant heating tube is periodically obtained. If the first actual temperature is less than the lower limit of the target temperature range corresponding to the target mixed water temperature, then reduce the opening of the temperature regulating proportional valve; If the first actual temperature is greater than the upper limit of the target temperature range corresponding to the target mixed water temperature, then the opening of the temperature regulating proportional valve is increased.

7. The method as described in claim 5, characterized in that, The flow regulating valve is a mixing valve. The first water path and the second water path are respectively connected to the two inlets of the mixing valve, and the mixing outlet of the mixing valve is connected to the inlet of the instant heating pipe. The step of adjusting the operating parameters of the flow regulating valve based on the target mixing temperature further includes: After adjusting the opening of the mixing valve to the target opening, the second actual temperature of the inlet end of the instant heating pipe is periodically obtained. If the second actual temperature is less than the lower limit of the target temperature range corresponding to the target mixing temperature, then control the mixing valve to rotate towards the first water path side by a preset angle; If the second actual temperature is greater than the upper limit of the target temperature range corresponding to the target mixing temperature, then the mixing valve is controlled to rotate towards the second water path side by a preset angle.

8. The method according to any one of claims 1 to 7, characterized in that, The step of adjusting the operating power of the instant heating element based on the second temperature at the outlet of the instant heating element at the current moment includes: If the second temperature is greater than the target outlet water temperature, then reduce the operating power of the instant heating tube; If the second temperature is lower than the target outlet water temperature, then increase the working power of the instant heating tube.

9. A control device, characterized in that, The control device includes: a memory, a processor, and a computer program stored in the memory and executable on the processor, the computer program being configured to implement the steps of the method for controlling the temperature of the drinking water device as described in any one of claims 1 to 8.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program that, when executed by a processor, implements the steps of the method for controlling the temperature of the drinking water device as described in any one of claims 1 to 8.

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