Control method of water supply equipment

Abstract

The invention relates to the technical field of water supply equipment, and discloses a control method of water supply equipment. The control method of the water supply equipment comprises the following steps that the water temperature required by a user is obtained based on a user instruction; and the hot tank outlet water temperature of the hot tank assembly is obtained, the water temperature required by the user is compared with the hot tank outlet water temperature, and an instant heating mode or a mixed water heating mode is selected according to the comparison result. And when the water temperature required by the user is larger than the water temperature of outlet water of the hot tank, the water supply equipment is controlled to enter an instant heating mode, and in the instant heating mode, water in the hot tank assembly enters the water purification rear end pipeline and is heated by the electric heating assembly, and then drinking water with the required water temperature is provided for the user. When the water temperature required by the user is smaller than the water temperature of outlet water of the hot tank, the water supply equipment is controlled to enter a mixed water heating mode, and in the mixed water heating mode, water in the hot tank assembly and water in the second water purification branch pipeline enter the water purification rear end pipeline to be mixed and then are heated through the electric heating assembly, and drinking water with the required water temperature is provided for the user.

Description

Technical Field

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

[0002] Water supply equipment is used to provide users with clean water that has been filtered, purified and heated. As people's needs increase, users need more clean water at different temperatures in different situations, such as making tea, coffee, milk, etc.

[0003] The water supply equipment in the prior art can provide users with purified water of different temperatures. However, the existing water supply equipment cannot provide a large flow of drinking hot water at a relatively low power, and the electric heating component needs to frequently use a relatively high power for heating, which increases energy consumption. Summary of the invention

[0004] The technical problem solved by the present invention is to provide a control method for water supply equipment, which can effectively solve the problem that the existing water supply equipment cannot provide a large flow of drinking hot water under low power; and the energy consumption is large, so that the water supply equipment can provide a larger flow of hot water under low power and reduce energy consumption.

[0005] The above technical problems are solved by the following technical solutions:

[0006] A control method for a water supply device, wherein the water supply device comprises a filter assembly, a hot tank assembly, a water purification pipeline, and an electric heating assembly, wherein the water purification pipeline comprises a water purification front-end pipeline, a first water purification branch pipeline, a second water purification branch pipeline, and a water purification rear-end pipeline, wherein the tap water provided by a tap water source enters the water purification front-end pipeline after being processed by the filter assembly, and the purified water in the water purification front-end pipeline enters the hot tank assembly through the first water purification branch pipeline for heating, wherein the water outlet of the hot tank assembly is connected to the water purification rear-end pipeline, and one end of the second water purification branch pipeline is connected to the water purification front-end pipeline, and the other end is connected to the water purification rear-end pipeline; the electric heating assembly is arranged in the water purification rear-end pipeline; the control method for the water supply device comprises the following steps:

[0007] Based on water use instructions, obtain the user's required water temperature;

[0008] Obtain the outlet water temperature of the hot tank of the hot tank assembly, compare the user required water temperature with the outlet water temperature of the hot tank, and select an instant heating mode or a mixed water heating mode according to the comparison result;

[0009] When the water temperature required by the user is greater than the outlet water temperature of the hot tank, the water supply device is controlled to enter the instant heating mode. In the instant heating mode, the water in the hot tank component enters the water purification rear-end pipeline and is heated by the electric heating component to provide drinking water of the required water temperature for the user;

[0010] When the water temperature required by the user is lower than the water temperature at the outlet of the hot tank, the water supply equipment is controlled to enter the mixed water heating mode. In the mixed water heating mode, the water in the hot tank assembly and the water in the second water purification branch pipeline enter the water purification rear-end pipeline and are mixed and then heated by the electric heating assembly to provide the user with drinking water of the required water temperature.

[0011] Compared with the background technology, the control method of the water supply equipment of the present invention has the following beneficial effects:

[0012] The control method of the water supply equipment provided by the present invention obtains the user's required water temperature and the hot tank outlet water temperature of the hot tank assembly, and compares the two. When the user's required water temperature is greater than the hot tank outlet water temperature, the water supply equipment is controlled to enter the instant heating mode, that is, the preheated purified water in the hot tank assembly is directly heated to the user's required water temperature by the electric heating assembly, which reduces the temperature rise. The electric heating assembly can provide a larger water flow rate when operating at a lower power. When the user's required water temperature is less than the hot tank outlet water temperature, the water supply equipment is controlled to enter the mixed water heating mode, and the water in the hot tank assembly and the water in the second water purification branch pipeline enter the water purification rear end pipeline for mixing, and then heated by the electric heating assembly to provide the user with drinking water of the required water temperature, that is, the higher temperature hot tank water and the lower temperature water in the second water purification branch pipeline are mixed to obtain water closer to the user's required water temperature, and then heated by the electric heating assembly, without directly heating the water in the second water purification branch pipeline to the user's required water temperature, so that the electric heating assembly does not need to frequently use a large power for heating, thereby reducing the energy consumption of the water supply equipment.

[0013] In one embodiment, the electric heating assembly includes a heating tube, and the control method of the instant heating mode includes the following steps:

[0014] Obtaining the current water flow rate of the water purification rear-end pipeline and the current water inlet temperature of the heating pipe;

[0015] Calculate and determine whether the outlet water temperature after the heating of the heating tube at the maximum heating power meets the user's required water temperature according to the current water flow rate, the current water inlet temperature and the maximum heating power of the heating tube;

[0016] If yes, the heating power of the heating tube is adjusted to meet the water temperature required by the user;

[0017] If not, the water outlet flow rate of the hot tank assembly is reduced.

[0018] In one of the embodiments, the water supply device further comprises a first flow regulator, which is used to regulate the water outlet flow of the hot tank assembly; in the instant heating mode, the first flow regulator operates at a maximum opening or maximum power by default.

[0019] In one embodiment, the control method of the mixed water heating mode comprises the following steps:

[0020] Obtaining a corresponding target mixed water temperature according to the user's required water temperature, wherein the target mixed water temperature is less than the user's required water temperature;

[0021] Obtain the initial water outlet temperature of the second water purification branch pipeline and the hot tank water outlet temperature, and adjust the water outlet flow of the hot tank assembly and the water flow of the second water purification branch pipeline according to the target mixed water temperature, the initial water outlet temperature and the hot tank water storage temperature.

[0022] In one embodiment, the step of adjusting the water outlet flow rate of the hot tank assembly and the water flow rate of the second water purification branch pipeline according to the target mixed water temperature, the initial water outlet temperature and the hot tank water outlet temperature includes:

[0023] The water flow rate of the hot tank assembly is adjusted to a first target water flow rate and the water flow rate of the second water purification branch pipeline is adjusted to a second target water flow rate; wherein the relationship between the first target water flow rate and the second target water flow rate and the target mixed water temperature, the initial water outlet temperature and the hot tank water outlet temperature is:

[0024] The first target water flow rate / the second target water flow rate=(the initial water outlet temperature-the target mixed water temperature) / (the target mixed water temperature-the hot tank water outlet temperature).

[0025] In one embodiment, the electric heating component includes a heating pipe, and the water supply device also includes a first flow regulating member and a second flow regulating member, wherein the first flow regulating member is used to regulate the water flow rate of the hot tank component, and the second flow regulating member is used to regulate the water flow rate of the second water purification branch pipeline entering the water purification rear end pipeline; the control method of the mixed water heating mode includes the following steps:

[0026] Obtaining the current water flow rate of the water purification rear-end pipeline and the current water inlet temperature of the heating pipe;

[0027] According to the current water flow rate, the current water inlet temperature and the maximum heating power of the heating pipe, calculate and determine whether the outlet water temperature after being heated by the maximum heating power of the heating pipe meets the user's required water temperature;

[0028] If yes, the heating power of the heating tube is adjusted to meet the water temperature required by the user;

[0029] If not, the water outlet flow rate of the hot tank assembly is increased through the first flow regulator; and / or the water flow rate of the second clean water branch pipeline entering the clean water rear end pipeline is reduced through the second flow regulator.

[0030] In one embodiment, the water outlet flow rate of the hot tank assembly is increased by the first flow regulating component and the water flow rate of the second water purification branch pipeline entering the water purification rear end pipeline is reduced by the second flow regulating component, and the increase in the water outlet flow rate of the hot tank assembly is equal to the decrease in the water flow rate of the second water purification branch pipeline entering the water purification rear end pipeline.

[0031] In one embodiment, the control method of the mixed water heating mode comprises the following steps:

[0032] When in the mixed water heating mode, the outlet water temperature of the hot tank is obtained in real time;

[0033] When the outlet water temperature of the hot tank is lower than the water temperature required by the user, the mixed water heating mode is exited and the instant heating mode is entered.

[0034] In one embodiment, based on the water use instruction, after obtaining the user's required water temperature, the following steps are also included:

[0035] Based on the comparison between the user's required water temperature and the normal water temperature, it is determined whether to enter the normal water outlet mode;

[0036] If the user requires a normal water temperature, the normal water outlet mode is entered. In the normal water outlet mode, the water in the second water purification branch pipeline is controlled to enter the water purification rear end pipeline and pass through the electric heating component to provide the user with drinking water of the required water temperature, wherein the electric heating component does not start heating;

[0037] If the user-required water temperature is greater than the normal water temperature, the steps of obtaining the outlet water temperature of the hot tank and comparing the user-required water temperature with the outlet water temperature of the hot tank are performed.

[0038] In one embodiment, the electric heating component includes a heating pipe, and the water supply device also includes a first flow regulator, a first temperature sensor, a first solenoid valve and a second solenoid valve, wherein the first flow regulator is used to regulate the water flow rate of the hot tank component, the first temperature sensor is used to detect the water temperature of the hot tank water outlet, the first solenoid valve is used to control the on-off of the water purification front-end pipeline, and the second solenoid valve is used to control the on-off of the first water purification branch pipeline; the steps of obtaining the water temperature of the hot tank water outlet and comparing the user demand water temperature with the water temperature of the hot tank water outlet include:

[0039] Open the first flow regulating member, the first solenoid valve, the second solenoid valve and the heating tube, obtain the outlet water temperature of the hot tank detected by the first temperature sensor, and compare the user required water temperature with the outlet water temperature of the hot tank.

[0040] In one embodiment, the hot tank assembly includes a hot tank, a heat exchange pipeline and a heating element, the hot tank stores domestic water with a set temperature, the first purified water branch pipeline is connected to the water inlet of the heat exchange pipeline, the water outlet of the heat exchange pipeline is connected to the purified water rear-end pipeline, the heat exchange pipeline is arranged in the hot tank, so that the domestic water with the set temperature exchanges heat with the purified water in the heat exchange pipeline to heat the purified water flowing through the first purified water branch pipeline, and the heating element is arranged inside the hot tank; the control method of the water supply equipment also includes:

[0041] The real-time temperature and target temperature range of the domestic water in the hot tank are obtained, and the opening and closing of the heating element are controlled according to the real-time temperature and the target temperature range. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without paying any creative work.

[0043] Figure 1 It is a schematic diagram of the working principle of the water supply equipment provided by a specific embodiment of the present invention;

[0044] Figure 2 is a flow chart of the steps of a method for controlling a water supply device provided in Embodiment 1 of the present invention;

[0045] Figure 3 is a flowchart of the steps of the control method of the instant heating mode provided in the second embodiment of the present invention;

[0046] Figure 4 yes Figure 1 A partial enlarged view of the middle A;

[0047] Figure 5 is a flow chart of steps of a control method of a mixed water heating mode provided in Embodiment 3 of the present invention;

[0048] Figure 6 is a flow chart of steps of another control method of a mixed water heating mode provided in a fourth embodiment of the present invention;

[0049] Figure 7 is a flow chart of the steps of a method for controlling a water supply device provided in Embodiment 5 of the present invention;

[0050] Figure 8 is a flowchart of the steps of a method for controlling a water supply device provided in Embodiment 6 of the present invention;

[0051] Fig. 9 is a flow chart of the steps of a method for controlling a water supply device provided in Embodiment 7 of the present invention;

[0052] Fig.10 It is a step flow chart of the control method of the water supply equipment provided in the eighth embodiment of the present invention.

[0053] Description of labels:

[0054] 1. Filter assembly; 11. First solenoid valve;

[0055] 2. hot tank assembly; 21. hot tank; 211. heating element; 212. first thermostat; 213. second thermostat; 22. heat exchange pipeline; 221. first flow regulating element; 222. first temperature sensor;

[0056] 3. Purified water pipeline; 31. Purified water front-end pipeline; 32. First purified water branch pipeline; 321. Second solenoid valve; 33. Second purified water branch pipeline; 331. Second flow regulating element; 34. Purified water rear-end pipeline; 341. Heating pipe. DETAILED DESCRIPTION

[0057] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0058] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0059] Embodiment 1

[0060] This embodiment can be applied to a scenario of controlling a water supply device, where, for example, Figure 1As shown, the water supply equipment may include: a filter assembly 1, a hot tank assembly 2, a water purification pipeline 3 and an electric heating assembly. The water purification pipeline 3 includes a water purification front-end pipeline 31, a first water purification branch pipeline 32, a second water purification branch pipeline 33 and a water purification rear-end pipeline 34. The tap water provided by the tap water source enters the water purification front-end pipeline 31 after being processed by the filter assembly 1. The purified water in the water purification front-end pipeline 31 enters the hot tank assembly 2 for heating through the first water purification branch pipeline 32. The water outlet of the hot tank assembly 2 is connected to the water purification rear-end pipeline 34. One end of the second water purification branch pipeline 33 is connected to the water purification front-end pipeline 31, and the other end is connected to the water purification rear-end pipeline 34. The electric heating assembly is arranged in the water purification rear-end pipeline 34.

[0061] based on Figure 1 The water supply equipment, reference Figure 2 A flow chart of a method for controlling a water supply device is shown. The method can be implemented by a controller of the water supply device and may include the following steps:

[0062] Step 101, based on the water use instruction, obtain the user's required water temperature.

[0063] The user selects the purified water outlet temperature level through the control panel and inputs a water use instruction to the controller. After receiving the water use instruction, the control panel sends it to the controller, and the controller obtains the user's water temperature based on the water use instruction input by the user.

[0064] Step 102, obtaining the outlet water temperature of the hot tank of the hot tank assembly 2, comparing the user required water temperature with the outlet water temperature of the hot tank, and selecting the instant heating mode or the mixed water heating mode according to the comparison result.

[0065] The controller obtains the outlet water temperature of the hot tank of the hot tank assembly 2, and then compares the user required water temperature with the outlet water temperature of the hot tank, and then selects the instant heating mode or the mixed water heating mode according to the comparison result.

[0066] The instant heating mode only controls the water outlet of the hot tank component 2 to be connected with the rear-end pipeline 34 of purified water, so that the purified water heated to the set temperature in the hot tank component 2 flows into the rear-end pipeline 34 of purified water and is then heated by the electric heating component.

[0067] The mixed water heating mode controls the water outlet of the hot tank assembly 2 and the second water purification branch pipeline 33 to be connected to the water purification rear end pipeline 34, so that the purified water at the set temperature and the purified water at room temperature are mixed and enter the water purification rear end pipeline 34 and then heated by the electric heating assembly.

[0068] Step 103, when the water temperature required by the user is greater than the water temperature of the hot tank outlet water, the water supply equipment is controlled to enter the instant heating mode. In the instant heating mode, the water in the hot tank component 2 enters the water purification rear end pipeline 34 and is heated by the electric heating component to provide the user with drinking water of the required water temperature.

[0069] Since the water temperature required by the user is greater than the water temperature at the hot tank outlet, at this time, the preheated clean water flowing into the clean water rear-end pipeline 34 from the outlet of the hot tank component 2 only needs to be heated by the electric heating component, which reduces the temperature rise. The electric heating component can provide a larger water flow rate when operating at a lower power.

[0070] Step 104, when the water temperature required by the user is lower than the water temperature of the hot tank outlet water, the water supply equipment is controlled to enter the mixed water heating mode. In the mixed water heating mode, the water in the hot tank component 2 and the water in the second water purification branch pipeline 33 enter the water purification rear end pipeline 34 and are mixed and heated by the electric heating component to provide the user with drinking water of the required water temperature.

[0071] Since the water temperature required by the user is lower than the water temperature at the hot tank outlet, the preheated purified water flowing out of the water outlet of the hot tank component 2 needs to be mixed with the normal temperature purified water flowing out of the second purified water branch pipeline 33 to obtain water closer to the water temperature required by the user and then heated by the electric heating component. There is no need to directly heat the water in the second purified water branch pipeline 33 to the water temperature required by the user, so that the electric heating component does not need to frequently use a large power for heating, thereby reducing the energy consumption of the water supply equipment.

[0072] The control method of the water supply equipment provided in this embodiment obtains the user's required water temperature and the hot tank outlet water temperature of the hot tank assembly 2, and compares the two. When the user's required water temperature is greater than the hot tank outlet water temperature, the water supply equipment is controlled to enter the instant heating mode, that is, the preheated purified water in the hot tank assembly 2 is directly heated to the user's required water temperature through the electric heating assembly, reducing the temperature rise, so that the electric heating assembly can provide a larger water flow rate when running at a lower power. When the water temperature required by the user is lower than the water temperature at the hot tank outlet, the water supply equipment is controlled to enter the mixed water heating mode, and the water in the hot tank component 2 and the water in the second water purification branch pipeline 33 enter the water purification rear end pipeline 34 for mixing, and then are heated by the electric heating component to provide the user with drinking water of the required water temperature. That is, the preheated purified water in the hot tank component 2 with a higher temperature and the normal temperature purified water in the second water purification branch pipeline 33 with a lower temperature are mixed to obtain water closer to the water temperature required by the user, and then the water is heated by the electric heating component. There is no need to directly heat the normal temperature purified water in the second water purification branch pipeline 33 to the water temperature required by the user, so that the electric heating component does not need to frequently use a large power for heating, thereby reducing the energy consumption of the water supply equipment.

[0073] Embodiment 2

[0074] In this embodiment, if Figure 1 As shown, the electric heating component may further include a heating tube 341. On this basis, the control method of the instant heating mode in step 103 of the first embodiment is described. Figure 3 A flow chart showing a method for controlling an instant heating mode may include the following steps:

[0075] Step 1031, obtaining the current water flow rate of the water purification rear-end pipeline 34 and the current water inlet temperature of the heating pipe 341.

[0076] The controller obtains the current water flow rate of the water purification rear-end pipeline 34 and the current water inlet temperature of the heating pipe 341.

[0077] Step 1032, based on the current water flow, the current water inlet temperature and the maximum heating power of the heating tube 341, calculate and determine whether the water outlet temperature after heating by the heating tube 341 at the maximum heating power can meet the user's required water temperature; if so, call step 1033; if not, call step 1034.

[0078] The temperature difference between the outlet water temperature after the heating tube 341 is heated at the maximum heating power and the current inlet water temperature of the heating tube 341 × the current water flow × the specific heat capacity of water = heat load. The above formula is stored in the controller, and the outlet water temperature after the heating tube 341 is heated can be calculated according to known conditions. The controller compares the calculated outlet water temperature after the heating tube 341 is heated with the user's required water temperature. If the calculated outlet water temperature after the heating tube 341 is heated is greater than the user's required water temperature, it means that the user's required water temperature can be met; if the calculated outlet water temperature after the heating tube 341 is heated is less than the user's required water temperature, it means that the user's required water temperature cannot be met.

[0079] Step 1033, adjusting the heating power of the heating tube 341 to meet the water temperature required by the user.

[0080] If the controller calculates and determines that the water outlet temperature after heating by the heating tube 341 at the maximum heating power can meet the user's required water temperature, the controller substitutes the user's required water temperature as the water outlet temperature after heating by the heating tube 341 into the above formula to obtain the required heat load, and then converts the required heat load into the heating power of the heating tube 341 to obtain the heating power of the heating tube 341. The controller adjusts the heating power of the heating tube 341 to the heating power of the heating tube 341 calculated above.

[0081] Step 1034 , reducing the water outlet flow rate of the hot tank assembly 2 .

[0082] According to the above formula, when the heating tube 341 has been heated at the maximum heating power, it means that the heat load provided by the heating tube 341 has reached the maximum. If it still cannot meet the water temperature required by the user, the current water flow rate can only be reduced. At this time, the water entering the water purification rear-end pipeline 34 is only the preheated purified water provided by the hot tank assembly 2. Therefore, the water outlet flow rate of the hot tank assembly 2 is reduced to reduce the required heat load and increase the water outlet temperature of the heating tube 341, thereby meeting the water temperature required by the user.

[0083] like Figure 4As shown, in an optional embodiment, the water supply device may further include a first flow regulating member 221, which is used to regulate the water outlet flow of the hot tank assembly 2; in the instant heating mode, the first flow regulating member 221 operates at a maximum opening or maximum power by default.

[0084] The first flow regulating member 221 may be a regulating water pump. If the controller calculates that the outlet water temperature after the heating pipe 341 is heated at the maximum heating power still does not meet the user's required water temperature, the power of the regulating water pump is reduced to reduce the outlet water flow of the hot tank assembly 2. The increase and decrease in the outlet water flow of the hot tank assembly 2 can be calculated by the controller based on the absolute value of the temperature difference between the outlet water temperature after the heating pipe 341 and the user's required water temperature.

[0085] Of course, in other embodiments, the first flow regulating member 221 may also be a regulating valve, which operates at a maximum opening by default, and the water outlet flow of the hot tank assembly 2 is reduced by reducing the opening of the regulating valve.

[0086] The control method of the instant heating mode provided in this embodiment first calculates and determines whether the heating pipe 341 meets the user's required water temperature when heated at the maximum power. If so, the heating power of the heating pipe 341 can be adjusted to meet the user's required water temperature. If not, the water flow rate of the hot tank component 2 is reduced to meet the user's required water temperature. The first flow regulator 221 works at the maximum power or the maximum opening by default, which can maximize the use of the preheated purified water in the hot tank component 2, prevent the purified water at the set temperature in the hot tank component 2 from exchanging heat with the surrounding environment for a long time, and cause heat loss, so that the water supply equipment is more energy-efficient.

[0087] Embodiment 3

[0088] This embodiment describes the control method of the mixed water heating mode in step 104 of the first embodiment. Figure 5 A flow chart showing a control method for a mixed water heating mode may include the following steps:

[0089] Step 1041, obtaining a corresponding target mixed water temperature according to the user's required water temperature, and the target mixed water temperature is less than the user's required water temperature.

[0090] Exemplarily, the user's required water temperature is 40°C, the target mixed water temperature is set to 35°C, and then the electric heating component is used to heat the water to the user's required water temperature.

[0091] Step 1043, obtain the initial water outlet temperature of the second water purification branch pipeline 33 and the hot tank water outlet temperature, and adjust the water outlet flow rate of the hot tank assembly 2 and the water flow rate of the second water purification branch pipeline 33 according to the target mixed water temperature, the initial water outlet temperature and the hot tank water outlet temperature.

[0092] The controller obtains the initial water outlet temperature of the second water purification branch pipeline 33 and the hot tank water outlet temperature, and then adjusts the water outlet flow rate of the hot tank assembly 2 and the water flow rate of the second water purification branch pipeline 33 according to the obtained initial water outlet temperature, the hot tank water outlet temperature, and the set target mixed water temperature.

[0093] In one implementation, step 1043 may further include the following steps:

[0094] Adjust the water outlet flow rate of the hot tank assembly 2 to the first target water flow rate and the water flow rate of the second clean water branch pipeline 33 to the second target water flow rate; wherein, the relationship between the first target water flow rate and the second target water flow rate and the target mixed water temperature, the initial outlet water temperature and the hot tank outlet water temperature is: first target water flow rate / second target water flow rate=(initial outlet water temperature-target mixed water temperature) / (target mixed water temperature-hot tank outlet water temperature).

[0095] Since target mixed water flow × target mixed water temperature = total required energy, target mixed water flow = first target water flow + second target water flow, total required energy = energy provided by normal temperature purified water + energy provided by preheated purified water, energy provided by normal temperature purified water = initial outlet water temperature × second target water flow, energy provided by preheated purified water = hot tank outlet water temperature × first target water flow, the above five formulas are used to calculate:

[0096] (First target water flow rate + second target water flow rate) × target mixed water temperature = initial water outlet temperature × second target water flow rate + hot tank water outlet temperature × first target water flow rate.

[0097] According to the above formula, the relationship between the first target water flow rate and the second target water flow rate and the target mixed water temperature, the initial water outlet temperature and the hot tank water outlet temperature is: first target water flow rate / second target water flow rate=(initial water outlet temperature-target mixed water temperature) / (target mixed water temperature-hot tank water outlet temperature).

[0098] The control method of the mixed water heating mode provided in the present embodiment first sets a target mixed water temperature that is lower than the water temperature required by the user, and then obtains the relationship between the first target water flow rate and the second target water flow rate and the target mixed water temperature, the initial water outlet temperature and the hot tank outlet temperature according to the initial water outlet temperature and the hot tank outlet temperature, and repeatedly adjusts the first target water flow rate and the second target water flow rate according to the above relationship until the target mixed water temperature is reached. After the target mixed water temperature is reached, the electric heating component is used to heat the water to the user's required water temperature.

[0099] Embodiment 4

[0100] In this embodiment, if Figure 1As shown, the electric heating assembly includes a heating pipe 341, and the water supply device also includes a first flow regulating member 221 and a second flow regulating member 331. The first flow regulating member 221 is used to regulate the water flow rate of the hot tank assembly 2, and the second flow regulating member 331 is used to regulate the water flow rate of the second water purification branch pipeline 33 entering the water purification rear end pipeline 34. Based on this water supply device, this embodiment describes the control method of the mixed water heating mode in step 104 of the first embodiment, referring to Figure 6 A flow chart showing another control method of the mixed water heating mode may include the following steps:

[0101] Step 1042, obtaining the current water flow rate of the water purification rear-end pipeline 34 and the current water inlet temperature of the heating pipe 341.

[0102] The controller obtains the current water flow rate of the water purification rear-end pipeline 34 and the current water inlet temperature of the heating pipe 341.

[0103] Step 1044, based on the current water flow, the current water inlet temperature and the maximum heating power of the heating tube 341, calculate and determine whether the outlet water temperature after being heated by the heating tube 341 at the maximum heating power meets the user's required water temperature; if so, call step 1046; if not, call step 1048.

[0104] Step 1046, adjust the heating power of the heating tube 341 to meet the water temperature required by the user.

[0105] The calculation method of the heating power of the heating tube 341 is the same as the calculation method of the heating power of the heating tube 341 in the instant heating mode in the second embodiment, and will not be repeated here. After calculating the heating power of the heating tube 341, the controller adjusts the heating power of the heating tube 341 to the heating power of the heating tube 341 calculated as above.

[0106] Step 1048 , increasing the water outlet flow of the hot tank assembly 2 through the first flow regulator 221 ; and / or reducing the water flow of the second water purification branch pipeline 33 entering the water purification rear end pipeline 34 through the second flow regulator 331 .

[0107] The controller controls the first flow regulator 221 to increase the water flow rate of the hot tank assembly 2 and controls the second flow regulator 331 to reduce the water flow rate of the second purified water branch pipeline 33 entering the purified water rear end pipeline 34 .

[0108] The first flow regulating member 221 is a regulating water pump, which adjusts the power of the regulating water pump to the maximum power and operates the regulating water pump at the maximum speed so that the water outlet of the hot tank assembly 2 can discharge water at the largest possible flow rate.

[0109] The second flow regulating component 331 is a flow regulating valve, and the opening of the flow regulating valve is used to adjust the water flow rate of the second water purification branch pipeline 33 entering the water purification rear end pipeline 34. The larger the opening of the flow regulating valve, the more water flow rate of the second water purification branch pipeline 33 entering the water purification rear end pipeline 34, and the smaller the opening of the flow regulating valve, the smaller the water flow rate of the second water purification branch pipeline 33 entering the water purification rear end pipeline 34.

[0110] In one embodiment, the water outlet flow rate of the hot tank assembly 2 is increased by the first flow regulating component 221 and the water flow rate of the second water purification branch pipeline 33 entering the water purification rear end pipeline 34 is reduced by the second flow regulating component 331, and the increase in the water outlet flow rate of the hot tank assembly 2 is equal to the decrease in the water flow rate of the second water purification branch pipeline 33 entering the water purification rear end pipeline 34, so as to ensure the stability of the water flow entering the water purification rear end pipeline 34, and thus ensure the stability of the water output from the water purification faucet 5.

[0111] The control method of the mixed water heating mode provided in the present embodiment first calculates and determines whether the outlet water temperature after heating by the heating tube 341 at the maximum heating power meets the user's required water temperature by obtaining the water flow rate and temperature of the mixed preheated purified water and the normal temperature purified water. If so, the user's required water temperature can be met by adjusting the heating power of the heating tube 341. If not, the outlet water flow rate of the preheated purified water is increased by the first flow regulating component 221; and / or the outlet water flow rate of the normal temperature purified water is reduced by the second flow regulating component 331, thereby achieving the purpose of quickly meeting the user's required water temperature.

[0112] Embodiment 5

[0113] This embodiment is based on any one of the embodiments 1 to 4 to explain the switching between the mixed water heating mode and the instant heating mode. Figure 7 A flow chart showing another control method of water supply equipment according to the present embodiment may include the following steps:

[0114] Step 201, based on the water usage instruction, obtain the user's required water temperature.

[0115] Step 202, obtaining the outlet water temperature of the hot tank of the hot tank assembly 2, comparing the user required water temperature with the outlet water temperature of the hot tank, and selecting the instant heating mode or the mixed water heating mode according to the comparison result.

[0116] Step 203, when the water temperature required by the user is greater than the water temperature of the hot tank outlet water, the water supply equipment is controlled to enter the instant heating mode. In the instant heating mode, the water in the hot tank component 2 enters the water purification rear end pipeline 34 and is heated by the electric heating component to provide the user with drinking water of the required water temperature.

[0117] Step 204, when the water temperature required by the user is lower than the water temperature of the hot tank outlet water, the water supply equipment is controlled to enter the mixed water heating mode. In the mixed water heating mode, the water in the hot tank component 2 and the water in the second water purification branch pipeline 33 enter the water purification rear end pipeline 34 and are mixed and heated by the electric heating component to provide the user with drinking water of the required water temperature.

[0118] Step 205, when the water supply equipment is in the mixed water heating mode, the outlet water temperature of the hot tank is obtained in real time.

[0119] In the mixed water heating mode, the controller obtains the outlet water temperature of the hot tank in real time to compare the outlet water temperature of the hot tank with the water temperature required by the user.

[0120] Step 206, when the outlet water temperature of the hot tank is lower than the user's required water temperature, the mixed water heating mode is exited and the instant heating mode is entered.

[0121] As the water in the hot tank assembly 2 exchanges heat with the surrounding environment, the temperature will gradually decrease. When the controller detects that the water temperature of the hot tank outlet water is lower than the water temperature required by the user, it exits the mixed water heating mode and directly enters the instant heating mode.

[0122] The control method of the water supply equipment provided in this embodiment obtains the water outlet temperature of the hot tank in real time in the mixed water heating mode. When the water outlet temperature of the hot tank is lower than the water temperature required by the user, it immediately switches to the instant heating mode to achieve rapid water output.

[0123] Embodiment 6

[0124] This embodiment is based on any one of the embodiments 1 to 5 to explain the normal temperature water outlet mode other than the mixed water heating mode and the instant heating mode. Figure 8 A flow chart showing another control method of water supply equipment according to the present embodiment may include the following steps:

[0125] Step 301, based on the water use instruction, obtain the user's required water temperature.

[0126] Step 302, based on the comparison between the user's required water temperature and the normal water temperature, determine whether to enter the normal water outlet mode. If the user's required water temperature is the normal water temperature, the normal water outlet mode is entered. In the normal water outlet mode, the water in the second water purification branch pipeline 33 is controlled to enter the water purification rear end pipeline 34 through the electric heating component to provide the user with drinking water of the required water temperature, wherein the electric heating component does not start heating.

[0127] The controller compares the user required water temperature with the normal temperature water temperature to determine whether to enter the normal temperature water outlet mode. After entering the normal temperature water outlet mode, the water in the second water purification branch pipeline 33 is controlled to enter the water purification rear end pipeline 34, and the electric heating component does not start heating.

[0128] Step 303: If the user-required water temperature is greater than the normal water temperature, the user-required water temperature is compared with the hot tank outlet water temperature, and the instant heating mode or the mixed water heating mode is selected according to the comparison result.

[0129] Step 304, when the water temperature required by the user is greater than the water temperature of the hot tank outlet water, the water supply equipment is controlled to enter the instant heating mode. In the instant heating mode, the water in the hot tank component 2 enters the water purification rear end pipeline 34 and is heated by the electric heating component to provide the user with drinking water of the required water temperature.

[0130] Step 305, when the water temperature required by the user is lower than the water temperature of the hot tank outlet water, the water supply equipment is controlled to enter the mixed water heating mode. In the mixed water heating mode, the water in the hot tank component 2 and the water in the second water purification branch pipeline 33 enter the water purification rear end pipeline 34 and are mixed and heated by the electric heating component to provide the user with drinking water of the required water temperature.

[0131] The control method of the water supply equipment provided in this embodiment first compares the user's required water temperature with the normal water temperature. When the user's required water temperature is greater than the normal water temperature, the water supply equipment is controlled to enter the instant heating mode or the mixed water heating mode according to the comparison result of the user's required water temperature and the water temperature of the hot tank outlet. The water supply equipment can provide the user with normal temperature purified water and heated purified water at the same time, meeting the user's demand for drinking water at different temperatures.

[0132] Embodiment 7

[0133] In this embodiment, if Figure 1 and Figure 4 As shown, the electric heating component includes a heating tube 341, and the water supply equipment also includes a first flow regulating component 221, a first temperature sensor 222, a first solenoid valve 11 and a second solenoid valve 321. The first flow regulating component 221 is used to adjust the water outlet flow of the hot tank component 2, the first temperature sensor 222 is used to detect the water temperature of the hot tank outlet water, the first solenoid valve 11 is used to control the on-off of the water purification front-end pipeline 31, and the second solenoid valve 321 is used to control the on-off of the first water purification branch pipeline 32.

[0134] This embodiment describes step 102 based on any one of the embodiments 1 to 6. Fig. 9 A flow chart showing another control method of water supply equipment according to the present embodiment may include the following steps:

[0135] Step 401, based on the water use instruction, obtain the user's required water temperature.

[0136] Step 402, open the first flow regulating member 221, the first solenoid valve 11, the second solenoid valve 321 and the heating tube 341, obtain the outlet water temperature of the hot tank detected by the first temperature sensor 222, and compare the user required water temperature with the outlet water temperature of the hot tank.

[0137] The controller controls the first flow regulating component 221, the first solenoid valve 11, the second solenoid valve 321 and the heating tube 341 to open, thereby connecting the front-end water purification pipeline 31, the first water purification branch pipeline 32 and the water inlet of the hot tank assembly 2, so that the water outlet of the hot tank assembly 2 is connected with the rear-end water purification pipeline 34, and the first temperature sensor 222 detects the water temperature of the hot tank water outlet and sends the water temperature of the hot tank water outlet to the controller. After receiving the water temperature of the hot tank water outlet, the controller compares it with the water temperature required by the user.

[0138] Step 403, selecting the instant heating mode or the mixed water heating mode according to the comparison result.

[0139] The controller selects to enter the instant heating mode or the mixed water heating mode according to the comparison result.

[0140] Step 404, when the water temperature required by the user is greater than the water temperature of the hot tank outlet water, the water supply equipment is controlled to enter the instant heating mode. In the instant heating mode, the water in the hot tank component 2 enters the water purification rear end pipeline 34 and is heated by the electric heating component to provide the user with drinking water of the required water temperature.

[0141] Step 405, when the water temperature required by the user is lower than the outlet water temperature of the hot tank, the water supply equipment is controlled to enter the mixed water heating mode. In the mixed water heating mode, the water in the hot tank assembly 2 and the water in the second water purification branch pipeline 33 enter the water purification rear end pipeline 34 and are mixed and heated by the electric heating assembly to provide the user with drinking water of the required water temperature.

[0142] The control method of the water supply equipment provided in the present embodiment, after obtaining the water temperature required by the user, first controls the preheated purified water in the hot tank component 2 to be connected with the purified water rear end pipeline 34, and after obtaining the hot tank water outlet temperature, compares the hot tank water outlet temperature with the user required water temperature, and then determines whether to connect the second purified water branch pipeline 33 with the purified water rear end pipeline 34 according to the comparison result, so as to avoid connecting the second purified water branch pipeline 33 with the purified water rear end pipeline 34 at the beginning, thereby reducing the water inlet temperature of the heating pipe 341 and saving energy consumption.

[0143] Embodiment 8

[0144] In this embodiment, if Figure 4 As shown, the hot tank assembly 2 includes a hot tank 21, a heat exchange pipeline 22 and a heating element 211. The hot tank 21 stores domestic water with a set temperature. The first clean water branch pipeline 32 is connected to the water inlet of the heat exchange pipeline 22. The water outlet of the heat exchange pipeline 22 is connected to the clean water rear-end pipeline 34. The heat exchange pipeline 22 is arranged in the hot tank 21 so that the domestic water with a set temperature can exchange heat with the clean water in the heat exchange pipeline 22 to heat the clean water flowing through the first clean water branch pipeline 32. The heating element 211 is arranged inside the hot tank 21.

[0145] This embodiment describes the opening and closing of the heating element 211 based on any one of the embodiments 1 to 7. Fig.10 A flow chart showing another method for controlling a water supply device according to the present embodiment may include the following steps:

[0146] Step 501, based on the water use instruction, obtaining the user's required water temperature;

[0147] Step 502, obtaining the outlet water temperature of the hot tank assembly 2, comparing the user required water temperature with the outlet water temperature of the hot tank, and selecting the instant heating mode or the mixed water heating mode according to the comparison result;

[0148] Step 503, when the user's required water temperature is greater than the outlet water temperature of the hot tank, the water supply device is controlled to enter the instant heating mode. In the instant heating mode, the water in the hot tank assembly 2 enters the water purification rear end pipeline 34 and is heated by the electric heating assembly to provide the user with drinking water of the required water temperature;

[0149] Step 504, when the water temperature required by the user is lower than the water temperature of the hot tank outlet water, the water supply equipment is controlled to enter the mixed water heating mode. In the mixed water heating mode, the water in the hot tank component 2 and the water in the second water purification branch pipeline 33 enter the water purification rear end pipeline 34 and are mixed and heated by the electric heating component to provide the user with drinking water of the required water temperature.

[0150] Step 505, obtaining the real-time temperature and target temperature range of the domestic water in the heat tank 21, and controlling the opening and closing of the heating element 211 according to the real-time temperature and the target temperature range.

[0151] Specifically, Figure 4 As shown, the hot tank 21 is also provided with a first thermostat 212 and a second thermostat 213. The first thermostat 212 is a manual protection temperature control, and the second thermostat 213 is an automatic reset temperature control, which can detect the real-time temperature of the domestic water in the hot tank 21. When the water temperature in the hot tank 21 is heated to the disconnection temperature, the second thermostat 213 will be disconnected, and the heating element 211 will stop heating. When the water temperature in the hot tank 21 is lower than the reset temperature, the second thermostat 213 will reset and close, and the heating element 211 will start heating again. The target temperature range of the domestic water in the hot tank 21 is 60°C to 70°C, that is, the disconnection temperature of the second thermostat 213 is 70°C, and the reset temperature is 60°C. The target temperature range is the set temperature, that is, the hot tank 21 stores domestic water at 60°C to 70°C.

[0152] The control method of the water supply equipment provided in this embodiment is used for an integrated water supply equipment that can provide purified water and domestic water heating. The domestic water with a set temperature stored in the heat tank 21 provides heat for preheating purified water, thereby saving energy consumption of the water supply equipment. In order to ensure the stability of the temperature of the preheated purified water, the real-time temperature of the domestic water in the heat tank 21 is obtained and the heating element 211 is controlled to be turned on and off according to the real-time temperature, so as to ensure that the domestic water in the heat tank 21 is always within the target temperature range.

[0153] In the specific contents of the above-mentioned specific implementation methods, the various technical features can be combined in any non-contradictory manner. In order to make the description concise, not all possible combinations of the above-mentioned technical features are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0154] The specific contents of the above specific embodiments only express several embodiments of the present invention, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be based on the attached claims.

Claims

1. A method for controlling a water supply device, characterized in that: The water supply device comprises a filter assembly (1), a hot tank assembly (2), a water purification pipeline (3) and an electric heating assembly. The water purification pipeline (3) comprises a water purification front-end pipeline (31), a first water purification branch pipeline (32), a second water purification branch pipeline (33) and a water purification rear-end pipeline (34). The tap water provided by the tap water source enters the water purification front-end pipeline (31) after being processed by the filter assembly (1). The purified water in the water purification front-end pipeline (31) enters the hot tank assembly (2) for heating through the first water purification branch pipeline (32). The water outlet of the hot tank assembly (2) is connected to the water purification rear-end pipeline (34). One end of the second water purification branch pipeline (33) is connected to the water purification front-end pipeline (31), and the other end is connected to the water purification rear-end pipeline (34). The electric heating assembly is arranged on the water purification rear-end pipeline (34). The control method of the water supply device comprises the following steps: Based on water use instructions, obtain the user's required water temperature; Obtaining the outlet water temperature of the hot tank of the hot tank assembly (2), comparing the user required water temperature with the outlet water temperature of the hot tank, and selecting an instant heating mode or a mixed water heating mode according to the comparison result; When the water temperature required by the user is greater than the outlet water temperature of the hot tank, the water supply device is controlled to enter the instant heating mode. In the instant heating mode, the water in the hot tank component (2) enters the water purification rear-end pipeline (34) and is heated by the electric heating component to provide drinking water of the required water temperature for the user; When the water temperature required by the user is lower than the outlet water temperature of the hot tank, the water supply device is controlled to enter the mixed water heating mode. In the mixed water heating mode, the water in the hot tank component (2) and the water in the second water purification branch pipeline (33) enter the water purification rear end pipeline (34) and are mixed and then heated by the electric heating component to provide the user with drinking water of the required water temperature.

2. The control method of water supply equipment according to claim 1, characterized in that: The electric heating component comprises a heating tube (341); the control method of the instant heating mode comprises the following steps: Obtaining the current water flow rate of the water purification rear-end pipeline (34) and the current water inlet temperature of the heating pipe (341); Calculating and judging whether the outlet water temperature after the heating of the heating tube (341) at the maximum heating power can meet the user's required water temperature according to the current water flow rate, the current water inlet temperature and the maximum heating power of the heating tube (341); If so, adjusting the heating power of the heating tube (341) to meet the water temperature required by the user; If not, the water outlet flow rate of the hot tank assembly (2) is reduced.

3. The control method of water supply equipment according to claim 2, characterized in that: The water supply device further comprises a first flow regulating member (221), the first flow regulating member (221) being used to regulate the water outlet flow of the hot pot assembly (2); in the instant heating mode, the first flow regulating member (221) operates at a maximum opening or maximum power by default.

4. The control method of water supply equipment according to claim 1, characterized in that: The control method of the mixed water heating mode comprises the following steps: Obtaining a corresponding target mixed water temperature according to the user's required water temperature, wherein the target mixed water temperature is less than the user's required water temperature; The initial water outlet temperature of the second water purification branch pipeline (33) and the hot tank water outlet temperature are obtained, and the water outlet flow rate of the hot tank component (2) and the water flow rate of the second water purification branch pipeline (33) are adjusted according to the target mixed water temperature, the initial water outlet temperature and the hot tank water outlet temperature.

5. The control method of water supply equipment according to claim 4, characterized in that: The step of adjusting the water outlet flow rate of the hot tank assembly (2) and the water flow rate of the second water purification branch pipeline (33) according to the target mixed water temperature, the initial water outlet temperature and the hot tank water outlet temperature comprises: The water outlet flow rate of the hot tank assembly (2) is adjusted to a first target water flow rate and the water flow rate of the second water purification branch pipeline (33) is adjusted to a second target water flow rate; wherein the relationship between the first target water flow rate and the second target water flow rate and the target mixed water temperature, the initial water outlet temperature and the hot tank water outlet temperature is: The first target water flow rate / the second target water flow rate=(the initial water outlet temperature-the target mixed water temperature) / (the target mixed water temperature-the hot tank water outlet temperature).

6. The control method of water supply equipment according to claim 1, characterized in that: The electric heating component comprises a heating pipe (341), and the water supply device further comprises a first flow regulating member (221) and a second flow regulating member (331), wherein the first flow regulating member (221) is used to regulate the water flow rate of the hot tank component (2), and the second flow regulating member (331) is used to regulate the water flow rate of the second water purification branch pipeline (33) entering the water purification rear end pipeline (34); the control method of the mixed water heating mode comprises the following steps: Obtaining the current water flow rate of the water purification rear-end pipeline (34) and the current water inlet temperature of the heating pipe (341); Calculate and determine, based on the current water flow rate, the current water inlet temperature and the maximum heating power of the heating pipe (341), whether the outlet water temperature after being heated by the heating pipe (341) at the maximum heating power meets the user's required water temperature; If so, adjusting the heating power of the heating tube (341) to meet the water temperature required by the user; If not, the water outlet flow rate of the hot tank assembly (2) is increased through the first flow regulating component (221); and / or the water flow rate of the second clean water branch pipeline (33) entering the clean water rear end pipeline (34) is reduced through the second flow regulating component (331).

7. The control method of water supply equipment according to claim 6, characterized in that: The water outlet flow rate of the hot tank assembly (2) is increased by the first flow regulating component (221), and the water flow rate of the second water purification branch pipeline (33) entering the water purification rear end pipeline (34) is reduced by the second flow regulating component (331), and the increase in the water outlet flow rate of the hot tank assembly (2) is equal to the decrease in the water flow rate of the second water purification branch pipeline (33) entering the water purification rear end pipeline (34).

8. The control method of water supply equipment according to claim 1, characterized in that: The control method of the mixed water heating mode comprises the following steps: When in the mixed water heating mode, the outlet water temperature of the hot tank is obtained in real time; When the outlet water temperature of the hot tank is lower than the water temperature required by the user, the mixed water heating mode is exited and the instant heating mode is entered.

9. The control method of water supply equipment according to claim 1, characterized in that: Based on the water use instruction, after obtaining the user's required water temperature, the following steps are also included: Based on the comparison between the user's required water temperature and the normal water temperature, it is determined whether to enter the normal water outlet mode; wherein, if the user's required water temperature is the normal water temperature, the normal water outlet mode is entered, and in the normal water outlet mode, the water in the second water purification branch pipeline (33) is controlled to enter the water purification rear end pipeline (34) to provide the user with drinking water of the required water temperature through the electric heating component, wherein the electric heating component does not start heating; If the user-required water temperature is greater than the normal water temperature, the steps of obtaining the outlet water temperature of the hot tank and comparing the user-required water temperature with the outlet water temperature of the hot tank are performed.

10. The control method of water supply equipment according to claim 1, characterized in that: The electric heating component comprises a heating pipe (341), and the water supply device further comprises a first flow regulating component (221), a first temperature sensor (222), a first solenoid valve (11) and a second solenoid valve (321), wherein the first flow regulating component (221) is used to regulate the water flow rate of the hot tank component (2), the first temperature sensor (222) is used to detect the water temperature of the hot tank water outlet, the first solenoid valve (11) is used to control the on-off of the water purification front-end pipeline (31), and the second solenoid valve (321) is used to control the on-off of the first water purification branch pipeline (32); The steps of obtaining the outlet water temperature of the hot tank and comparing the user required water temperature with the outlet water temperature of the hot tank include: The first flow regulating element (221), the first solenoid valve (11), the second solenoid valve (321) and the heating tube (341) are turned on to obtain the outlet water temperature of the hot tank detected by the first temperature sensor (222), and to compare the user required water temperature with the outlet water temperature of the hot tank.

11. The control method of water supply equipment according to any one of claims 1 to 10, characterized in that: The hot tank assembly (2) comprises a hot tank (21), a heat exchange pipeline (22) and a heating element (211); domestic water with a set temperature is stored in the hot tank (21); the first purified water branch pipeline (32) is connected to the water inlet of the heat exchange pipeline (22); the water outlet of the heat exchange pipeline (22) is connected to the purified water rear end pipeline (34); the heat exchange pipeline (22) is arranged in the hot tank (21) so that the domestic water with the set temperature exchanges heat with the purified water in the heat exchange pipeline (22) so as to heat the purified water flowing through the first purified water branch pipeline (32); the heating element (211) is arranged in the hot tank (21); the control method of the water supply equipment further comprises: The real-time temperature and target temperature range of the domestic water in the hot tank (21) are obtained, and the opening and closing of the heating element (211) are controlled according to the real-time temperature and the target temperature range.

Images