Water dispenser and control method thereof

Abstract

The present application relates to the technical field of drinking water equipment, and provides a water dispenser and a control method thereof, the water dispenser comprising: a heat storage module, a heating module, a pumping component and a control module; the water inlet end of the heat storage module is in communication with a water supply system, a parallel branch is arranged between the water inlet end and the water outlet end of the heat storage module, and the parallel branch can be selectively turned on or turned off; the water inlet end of the heating module is in communication with the water outlet end of the heat storage module, and the water outlet end of the heating module is in communication with a water outlet; the pumping component is used to drive water to flow to the heating module through the heat storage module and the parallel branch; and the control module is connected with the heating module, the parallel branch and the pumping component respectively. The water dispenser shown in the present application can realize the switching between a high-temperature water outlet mode and a low-temperature water outlet mode, not only meets the diversified water taking demands of users, but also can output high-temperature hot water with large flow in the high-temperature water outlet mode.

Description

Technical Field

[0001] This invention relates to the field of drinking water equipment technology, and in particular to a water dispenser and its control method. Background Technology

[0002] An instant hot water dispenser is a device that provides hot water instantly without requiring the user to wait. Unlike traditional preheated hot water dispensers, instant hot water dispensers provide fresh hot water immediately, avoiding repeated boiling and eliminating energy waste caused by the hot water tank's heat preservation stage.

[0003] In practical applications, although instant water dispensers can use electricity to heat room temperature water to a specified temperature, they generally have a single water dispensing mode. Furthermore, the water flow rate of an instant water dispenser is usually determined by the power of the heating module and the temperature difference between the inlet and outlet. Due to the power limitations of the household power supply system, the water flow rate of instant water dispensers at the high-temperature water setting is generally small, especially in winter when the water temperature is low, resulting in longer water dispensing times for users. Summary of the Invention

[0004] This invention aims to at least solve one of the technical problems existing in related technologies. To this end, this invention proposes a water dispenser that can switch between a high-temperature water dispensing mode and a low-temperature water dispensing mode, which not only meets the diverse water dispensing needs of users, but also can output a large flow of high-temperature hot water in the high-temperature water dispensing mode.

[0005] The present invention also proposes a control method for a water dispenser.

[0006] A water dispenser according to a first aspect of the present invention includes:

[0007] A heat storage module, wherein the inlet end of the heat storage module is used to connect to the water supply system, and a parallel branch is provided between the inlet end and the outlet end of the heat storage module, wherein the parallel branch can be selectively turned on or off.

[0008] A heating module, wherein the water inlet of the heating module is connected to the water outlet of the heat storage module, and the water outlet of the heating module is connected to the water outlet.

[0009] A pumping component is used to drive water flow through the heat storage module and the parallel branch to the heating module;

[0010] The control module is connected to the heating module, the parallel branch, and the pumping component, respectively.

[0011] The control module is used to control the opening and closing status of the parallel branch according to the threshold range of the target water intake temperature, and to control the pumping component and the heating module to start operation.

[0012] According to one embodiment of the present invention, the control module is used to control the parallel branch to shut off when the target water intake temperature is greater than or equal to a preset temperature; and to control the parallel branch to turn on when the target water intake temperature is less than the preset temperature.

[0013] According to one embodiment of the present invention, it further includes:

[0014] An operation panel is used to receive target water intake parameters, and the operation panel is connected to the control module;

[0015] The control module is used to control the working state of the heating module and the pumping component according to the target water intake parameters, so that the water output parameters of the outlet are adapted to the target water intake parameters.

[0016] The target water intake parameters include the target water intake temperature and the target water intake volume.

[0017] According to one embodiment of the present invention, the water outlet of the heating module can be selectively connected to the water outlet of the heat storage module or the water dispenser via a valve control; the control module and the valve control are connected.

[0018] The control module is used to control the parallel branch to shut off, and to control the valve control to connect the outlet of the heating module and the heat storage module, so that the heat storage module can use the hot water output by the heating module to store heat.

[0019] According to one embodiment of the present invention, the water outlet of the heating module can be connected to the heat storage module through the valve control to form a circulating water path.

[0020] According to one embodiment of the present invention, the heat storage module includes a shell, a heat exchanger, and a heat storage material;

[0021] The shell has a receiving cavity, the heat exchanger is disposed in the receiving cavity, and the heat storage material is filled in the receiving cavity between the heat exchanger and the shell;

[0022] The outlet of the heating module is connected to the first end of the heat exchanger and the outlet through the valve control; the first end of the heat exchanger is used to connect to the water supply system, and the second end of the heat exchanger is connected to the inlet of the heating module.

[0023] According to one embodiment of the present invention, the heat exchanger includes a coil;

[0024] Alternatively, the heat exchanger may include a coil and a fin assembly, with at least a portion of the coil passing through the fin assembly, or the coil and the fin assembly may be stacked.

[0025] According to one embodiment of the present invention, the heat storage module further includes a heater for heating the heat storage material.

[0026] According to one embodiment of the present invention, the heating module includes: a heating tube and a jet assembly;

[0027] The water inlet of the heating tube is connected to the water outlet of the heat storage module, and the water outlet of the heating tube is connected to the water outlet.

[0028] The jet assembly is disposed inside the heating tube. The jet assembly has a jet cavity and an inlet and a jet hole communicating with the jet cavity. The jet direction of the jet hole is towards the inner wall of the heating tube.

[0029] According to one embodiment of the present invention, the jet assembly includes a central column and a plurality of jet chambers;

[0030] Multiple jet chambers are arranged sequentially along the axial direction of the central column, and a water passage gap is formed between the sidewall of the jet chamber and the inner wall of the heating tube;

[0031] The water inlet is located on the side of the jet cavity facing the heat storage module, and the jet hole is located on the side wall of the jet cavity.

[0032] The control method for a water dispenser according to the second aspect of the present invention, as described above, includes:

[0033] Obtain the target water temperature input by the user;

[0034] Based on the threshold range of the target water intake temperature, the opening and closing status of the parallel branch is controlled, as well as the start-up and operation of the pumping component and the heating module are controlled.

[0035] According to an embodiment of the present invention, the step of controlling the opening and closing state of the parallel branch based on the threshold range of the target water intake temperature includes:

[0036] If the target water intake temperature is determined to be greater than or equal to the preset temperature, the parallel branch is controlled to shut down.

[0037] If the target water intake temperature is determined to be lower than the preset temperature, the parallel branch is controlled to be turned on.

[0038] According to one embodiment of the present invention, the control method further includes:

[0039] Obtain the target water intake parameters input by the user;

[0040] Based on the target water intake parameters, control the working status of the heating module and pumping components to ensure that the water output parameters at the outlet are compatible with the target water intake parameters.

[0041] The target water intake parameters include the target water intake temperature and the target water intake volume.

[0042] According to an embodiment of the present invention, the step of controlling the operating state of the heating module and the pumping component based on the target water intake parameters includes:

[0043] Obtain the inlet and outlet water temperatures of the heating module;

[0044] Based on the target water intake temperature, the inlet water temperature, and the outlet water temperature, adjust the pumping flow rate of the pumping component and the heating power of the heating module until the outlet water temperature reaches the target water intake temperature;

[0045] Calculate the water output of the outlet based on the pumping flow rate and pumping duration of the pumping component.

[0046] Once the water output from the outlet reaches the target water intake, the heating module and the pumping component are controlled to stop operating.

[0047] According to an embodiment of the present invention, the control method further includes: determining that a water intake signal has been received, controlling the opening and closing state of the parallel branch according to the threshold range of the target water intake temperature, and controlling the valve control to connect the water outlet of the heating module and the water outlet.

[0048] If no water intake signal is received, the parallel branch is controlled to shut off, and the outlet of the heating module is connected to the heat storage module or the water outlet according to the threshold range of the temperature of the heat storage material in the heat storage module.

[0049] The above-mentioned one or more technical solutions in the embodiments of the present invention have at least one of the following technical effects: The water dispenser is configured with a heat storage module, a heating module, a pumping component and a control module, and a parallel branch is configured for the heat storage module. According to the threshold range of the target water temperature, the opening and closing state of the parallel branch can be controlled to realize the switching between high-temperature water outlet mode and low-temperature water outlet mode. In the high-temperature water outlet mode, the parallel branch is closed, so that the water supplied by the water supply system is preheated by the heat storage module and heated by the heating module in sequence before being output from the water outlet, ensuring that the water outlet efficiently supplies a large flow of high-temperature hot water. In the low-temperature water outlet mode, the parallel branch is open, so that the water supplied by the water supply system is directly heated by the heating module before being output from the water outlet, ensuring that the water outlet outputs hot water at a relatively low temperature.

[0050] As can be seen from the above, the water dispenser shown in this invention can switch between high-temperature water dispensing mode and low-temperature water dispensing mode, which not only meets the diverse water dispensing needs of users, but also can output a large flow of high-temperature hot water in high-temperature water dispensing mode.

[0051] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0052] To more clearly illustrate the technical solutions in the embodiments of the present invention or related technologies, the drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0053] Figure 1 This is a schematic diagram of the structure of the water dispenser provided in an embodiment of the present invention;

[0054] Figure 2 This is one of the structural schematic diagrams of the heat storage module provided in the embodiments of the present invention;

[0055] Figure 3 This is the second schematic diagram of the structure of the heat storage module provided in the embodiment of the present invention;

[0056] Figure 4 This is the third schematic diagram of the structure of the heat storage module provided in the embodiment of the present invention;

[0057] Figure 5 This is a schematic diagram of the heating module provided in an embodiment of the present invention;

[0058] Figure 6 This is a cross-sectional view of the heating module provided in an embodiment of the present invention;

[0059] Figure 7 This is a schematic diagram of the heating module provided in an embodiment of the present invention after the heating tube has been removed;

[0060] Figure 8 This is one of the schematic diagrams of the control flow of the water dispenser provided in the embodiments of the present invention;

[0061] Figure 9 This is the second schematic diagram of the control flow of the water dispenser provided in the embodiment of the present invention;

[0062] Figure 10 This is a flowchart illustrating the process of controlling the working state of the heating module and the pumping component according to the target water intake parameters provided in an embodiment of the present invention.

[0063] Figure label:

[0064] 1: Thermal storage module; 11: Shell; 12: Heat exchanger; 13: Heater; 121: Coil; 122: Fin assembly;

[0065] 2: Heating module; 21: Heating tube; 22: Jet assembly; 23: Inlet connector; 24: Outlet connector; 221: Central column; 222: Jet cavity; 2220: Jet hole; 25: Inlet water temperature sensor; 26: First seal; 27: First positioning element; 271: Positioning plate; 272: Flow hole; 28: Second positioning element; 29: Second seal; 30: Outlet water temperature sensor;

[0066] 3: Valve control; 4: Pumping component; 5: Water supply system; 6: Water outlet; 7: First temperature sensor; 8: Second temperature sensor; 9: Control valve; 10: Temperature sensing element. Detailed Implementation

[0067] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of the invention.

[0068] In the description of the embodiments of the present invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of the present invention. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0069] In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of the present invention based on the specific circumstances.

[0070] In embodiments of the present invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0071] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0072] The following is combined with Figures 1-10 The water dispenser and its control method provided in this invention will be described in detail through specific embodiments and application scenarios.

[0073] In the first aspect, such as Figure 1 As shown, an embodiment of the present invention provides a water dispenser, including: a heat storage module 1, a heating module 2, a pumping component 4, and a control module;

[0074] The inlet of the heat storage module 1 is connected to the water supply system 5. A parallel branch is provided between the inlet and outlet of the heat storage module 1, which can be selectively opened or closed. The inlet of the heating module 2 is connected to the outlet of the heat storage module 1, and the outlet of the heating module 2 is connected to the outlet 6. The pumping component 4 is used to drive the water flow through the heat storage module 1 and the parallel branch to the heating module 2. The control module is connected to the heating module 2, the parallel branch and the pumping component 4 respectively.

[0075] The control module is used to control the opening and closing status of the parallel branch according to the threshold range of the target water intake temperature, and to control the start-up and operation of the pumping component 4 and the heating module 2.

[0076] Understandably, the water supply system 5 can be either a water tank or a water purification system, capable of stably supplying water to the inlet of the heat storage module 1. The water supply temperature of the water supply system 5 is typically 5-10℃.

[0077] The heat storage module 1 typically includes a heat exchanger and a heat storage material. A heat exchange channel is formed on the inner side of the heat exchanger, and the heat storage material is in contact with the outer side of the heat exchanger. The heat storage material can be a solid-liquid phase change material, cast aluminum, water, etc. The water supply system 5 is connected to the heating module 2 through the heat exchange channel.

[0078] The heating module 2 can be an electric heating element or a plate heat exchanger. The heating module 2 is constructed with a heating channel to heat the water flowing through the heating channel. The heating module 2 can adaptively adjust the heating power according to the water temperature at the outlet 6.

[0079] Since the inlet of the heat storage module 1 is connected to the water supply system 5, the first end of the parallel branch can be considered to be connected to the inlet of the heat storage module 1 or the water supply system 5, and the second end of the parallel branch is connected to the outlet of the heat storage module 1.

[0080] The parallel branch is equipped with a control valve 9, such as a two-position two-way solenoid valve. The control module controls the opening and closing of the parallel branch by controlling the on / off state of the control valve 9. The control module can be a PLC controller or a microcontroller.

[0081] Furthermore, the water dispenser can be equipped with an operation panel, which is electrically connected to the control module. Users can set the target water temperature through the operation panel, which then transmits the received target water temperature to the control module. Alternatively, users can set the target water temperature through smartphones, smart bracelets, or other terminal devices. Based on the communication connection between the terminal device and the control module, the control module obtains the target water temperature from the terminal device.

[0082] At least two threshold ranges can be set in the control program of the control module. Based on the threshold range of the target water temperature, the control module can control the parallel branch to shut off, so that the water dispenser works in the high-temperature water output mode. At this time, the water supplied by the water supply system 5 is preheated by the heat storage module 1 and heated by the heating module 2 in sequence, and then output from the water outlet 6, ensuring that the water outlet 6 efficiently supplies a large flow of high-temperature hot water (e.g., 95-100℃), reducing the user's water collection time.

[0083] At the same time, the control module can also control the parallel branch to conduct according to the threshold range of the target water temperature, so that the water dispenser works in the low temperature water output mode. At this time, the water supplied by the water supply system 5 is directly heated by the heating module 2 and output from the water outlet 6, ensuring that the water outlet 6 outputs hot water at a relatively low temperature.

[0084] As can be seen from the above, compared with water dispensers that are only equipped with a single heating component, the water dispenser shown in this invention can control the opening and closing state of the parallel branch according to the threshold range of the target water temperature, and realize the switching between high temperature water output mode and low temperature water output mode. This not only meets the diverse water needs of users, but also outputs a large flow of high temperature hot water in high temperature water output mode.

[0085] It should be noted that, since the water dispenser in this embodiment is equipped with a heat storage module 1 and a heating module 2, it can efficiently provide a large flow of high-temperature hot water, and this water dispenser can also be called a water dispenser.

[0086] In some embodiments, in order to facilitate the switching control between high-temperature water outlet mode and low-temperature water outlet mode according to user needs, the control module is used to control the parallel branch to be cut off when the target water intake temperature is greater than or equal to the preset temperature; and to control the parallel branch to be turned on when the target water intake temperature is less than the preset temperature.

[0087] The preset temperature can be 70-80℃, for example, the preset temperature is 70℃, 75℃ or 80℃.

[0088] In some embodiments, such as Figure 1 As shown, the water dispenser also includes: an operation panel, which is used to receive target water dispensing parameters, and the operation panel is connected to the control module;

[0089] The control module is used to control the working state of the heating module 2 and the pumping component 4 according to the target water intake parameters, so that the water output parameters of the outlet 6 are adapted to the target water intake parameters.

[0090] The target water intake parameters include the target water intake temperature and the target water intake volume.

[0091] Understandably, the control panel can be a touch screen, allowing users to set target water intake parameters such as target water temperature and target water intake volume. Based on the target water intake parameters fed back by the control panel, the control module controls the heating power of the heating module 2 and the pumping flow rate of the pumping component 4, ensuring that the water output from the outlet 6 meets the user's needs.

[0092] In some embodiments, such as Figure 1 As shown, the water outlet of the heating module 2 can be selectively connected to the heat storage module 1 or the water outlet 6 of the water dispenser via the valve control 3; the control module and the valve control 3 are connected.

[0093] The control module is used to control the shutdown of the parallel branch and to control the valve control 3 to connect the outlet of the heating module 2 and the heat storage module 1, so that the heat storage module 1 can use the hot water output by the heating module 2 for heat storage.

[0094] Understandably, valve control 3 can be a two-position three-way solenoid directional valve, and the control module can control valve control 3 to switch between the first state and the second state according to the threshold range of the temperature of the heat storage material in the heat storage module 1.

[0095] In this heat storage module 1, a temperature sensing element 10 is installed in the heat storage material. The temperature sensing element 10 is connected to the control module and is used to collect the temperature of the heat storage material. The temperature sensing element 10... Figure 1 The Chinese identifier is NTC4.

[0096] When the temperature of the heat storage material is higher than the set temperature, it can be considered that the heat loss of the heat storage material in the heat storage module 1 is small. At this time, the heat storage module 1 can meet the preheating requirements of the raw water supplied by the water supply system 5, and there is no need to store heat in the heat storage material. The control module controls the valve control 3 to be in the first state so that the water outlet of the heating module 2 is connected to the water outlet 6 through the valve control 3. Since the parallel branch is closed, the water dispenser is in the high temperature water outlet mode. The water supplied by the water supply system 5 passes through the heat storage module 1, the heating module 2 and the valve control 3 in sequence, and then is output from the water outlet 6. In this process, the heat storage module 1 is used to preheat the raw water supplied by the water supply system 5, and then the heating module 2 is used to heat the preheated water, ensuring the water temperature and flow rate of the water outlet 6. The water dispenser can output a large flow of high temperature hot water from the water outlet 6 in an instant.

[0097] When the temperature of the heat storage material is lower than the set temperature, it can be considered that the heat storage material in the heat storage module 1 has lost most of its heat. The heat storage module 1 cannot effectively preheat the raw water supplied by the water supply system 5. The control module control valve control 3 is in the second state. The water outlet of the heating module 2 is connected to the heat storage module 1 through the valve control 3. For example, the water outlet of the heating module 2 is connected to the heat exchange channel in the heat storage module 1. At this time, the water dispenser is in the heat storage mode. The hot water output by the heating module 2 can be used to store heat in the heat storage module 1. There is no need to use other equipment to provide the heat energy required for heat storage in the heat storage module 1. This not only has low cost, but also has good energy-saving and environmental protection effects.

[0098] The set temperature can be the phase change temperature of the heat storage material. Optionally, the set temperature is 65-75℃, for example, the set temperature is 65℃, 70℃ or 75℃.

[0099] In some embodiments, such as Figure 1 As shown, the water outlet of the heating module 2 can be connected to the heat storage module 1 through the valve control 3 to form a circulating water path.

[0100] Understandably, during the heat storage module 1 process, the heat storage module 1, the heating module 2, and the valve control 3 are connected in sequence to form a closed-loop circulating water circuit. During the circulation of water along the circulating water circuit, the heating module 2 is controlled to heat the water flow, and the heated water flow exchanges heat with the heat storage material in the heat storage module 1. When the circulating water is heated to the target heating temperature, the heat storage of the heat storage module 1 is completed.

[0101] In some embodiments, such as Figures 2 to 4 As shown, the heat storage module 1 includes a shell 11, a heat exchanger 12, and a heat storage material; the shell 11 has a receiving cavity, the heat exchanger 12 is disposed in the receiving cavity, and the heat storage material fills the receiving cavity between the heat exchanger 12 and the shell 11;

[0102] The outlet of the heating module 2 is connected to the first end of the heat exchanger 12 and the outlet 6 via a valve control; the first end of the heat exchanger 12 is connected to the water supply system 5, and the second end of the heat exchanger 12 is connected to the inlet of the heating module 2.

[0103] Understandably, the shell 11 can be configured as a cube, and specifically made of heat-resistant plastic or stainless steel; the heat exchanger 12 can be in the form of stainless steel bent tube, tube-fin heat exchanger, plate heat exchanger, etc.; the heat storage material can be single-phase heat storage material such as water or cast aluminum, to provide heat by utilizing the sensible heat of the temperature difference between the heat storage material and the inlet water in the heat exchanger 12, or it can be phase change material such as hydrated salt heat storage material or paraffin wax, to provide heat by utilizing the heat energy generated during phase change.

[0104] In some examples, such as Figure 2 As shown, the heat exchanger 12 uses a coil 121, for example, the coil 121 is a stainless steel tube, and the coil 121 is arranged in a single layer inside the shell 11.

[0105] In some examples, such as Figure 3 As shown, the heat exchanger 12 includes a coil 121 and a fin assembly 122, with at least a portion of the coil 121 passing through the fin assembly 122. Optionally, the fin assembly 122 includes a plurality of fins arranged in a stacked manner, with the coil 121 passing between the stacked fins.

[0106] In some examples, such as Figure 4 As shown, the heat exchanger 12 includes a coil 121 and a fin assembly 122, which are stacked together. Optionally, the fin assembly 122 has upper and lower layers, with the coil 121 sandwiched between the upper and lower layers of the fin assembly 122. Each layer of the fin assembly 122 includes multiple fins stacked together.

[0107] In some embodiments, such as Figure 1 As shown, the heat storage module 1 also includes a heater 13, which is used to heat the heat storage material.

[0108] It is understood that the heater 13 can be installed inside the housing 11 of the heat storage module 1 or on the outer surface of the housing 11; the heater 13 can be an electric heating element such as a heating wire, a heating tube or a constant temperature PTC heater.

[0109] Thus, in addition to using the hot water output from the heating module 2 to store heat in the heat storage material of the heat storage module 1, this embodiment can also directly use the heater 13 to heat the heat storage material to achieve heat storage.

[0110] In this embodiment, while the water dispenser is operating in water dispensing mode, the heater 13 heats the heat storage material to ensure that the water dispenser can operate in water dispensing mode for a long time.

[0111] In some embodiments, such as Figure 5 , Figure 6 and Figure 7 As shown, the heating module 2 includes a heating tube 21 and a jet assembly 22; the water inlet of the heating tube 21 is connected to the water outlet of the heat storage module, and the water outlet of the heating tube 21 can be selectively connected to the heat storage module and the water outlet through a valve control; the jet assembly 22 is disposed inside the heating tube 21, and the jet assembly 22 has a jet cavity 222 and a water inlet and a jet hole 2220 connected to the jet cavity 222, and the jet direction of the jet hole 2220 is towards the inner wall of the heating tube 21.

[0112] Understandably, the heating module 2 also includes: a water inlet and a water outlet; the water inlet is located at one end of the heating pipe 21 and is connected to the water outlet of the heat storage module; the water outlet is located at the other end of the heating pipe 21 and is connected to the water outlet; wherein, the jet assembly 22 is installed between the water inlet and the water outlet.

[0113] Meanwhile, the heating tube 21, as a functional element capable of heating fluids, can employ electric heating methods such as thick-film heating, quartz tube heating, nanofilm heating, cast aluminum heating, and stainless steel wire heating. Alternatively, it can use heat exchange methods such as steam heating or combustion heating to heat the fluid. The inner wall of the heating tube 21 serves as the heating wall surface. Through convective heat exchange between the jet fluid triggered by the jet assembly 22 and the heating wall surface, high heat exchange efficiency is ensured, improving the heating effect on the water.

[0114] In some embodiments, such as Figure 6 and Figure 7 As shown, the jet assembly 22 includes a central column 221 and multiple jet chambers 222; the multiple jet chambers 222 are arranged sequentially along the axial direction of the central column 221, and a water passage gap d is formed between the side wall of the jet chamber 222 and the inner wall of the heating tube 21; wherein, the water inlet is located on the side of the jet chamber 222 facing the heat storage module, and the jet hole 2220 is located on the side wall of the jet chamber 222.

[0115] Understandably, in actual operation, most of the fluid is ejected from the jet holes 2220 on the jet cavity 222, generating a jet fluid with a velocity perpendicular to the heated wall surface, which has a high heat exchange efficiency. Since there is a water passage gap d between the jet cavity 222 and the inner wall of the heating tube 21, a small amount of fluid flows out directly from the water passage gap d, forming a velocity component parallel to the heated wall surface. This part of the fluid merges with the jet fluid, guiding the jet fluid toward the water outlet of the heating module 2 while also enhancing the heat exchange efficiency with the heated wall surface.

[0116] After the fluid passes through the previous jet chamber 222 and exchanges heat with the heated wall, it enters the next jet chamber 222 along the mainstream direction and exchanges heat with the heated wall again. This process is repeated. After multiple jet heat exchanges, the temperature of the fluid continues to rise until it reaches the target temperature set for the process, and then flows out from the outlet.

[0117] In some embodiments, the jet cavity 222 is a cylindrical cavity, and the peripheral wall of the jet cavity 222 is provided with a water-blocking wing. The water-blocking wing extends along the circumference of the jet cavity 222, and the edge of the water-blocking wing is in contact with the inner wall of the heating pipe 21, or a water passage gap is formed between the edge of the water-blocking wing and the inner wall of the heating pipe 21, and the width of the water passage gap is smaller than the width of the water passage gap d.

[0118] The jet cavity 222 and the heating tube 21 are configured with compatible shapes. For example, the jet cavity 222 is a cylindrical cavity and the heating tube 21 is cylindrical. The jet cavity 222 and the heating tube 21 are coaxially arranged.

[0119] Optionally, the baffle can be located at one end of the jet cavity 222 facing the water inlet of the heating pipe 21. This design reduces the flow rate of the fluid passing through the water gap d and increases the flow rate of the jet fluid ejected from the jet hole 2220, which is beneficial to enhancing the jet heat exchange effect. Of course, the baffle can also be located axially in the middle of the jet cavity 222.

[0120] In some embodiments, such as Figure 6 As shown, the distance L between any two adjacent jet cavities 222 along the length of the heating tube 21 is 2 to 12 mm, that is, the distance L is greater than or equal to 2 mm and less than or equal to 12 mm; optionally, the distance L is 4 to 10 mm, that is, the distance L is greater than or equal to 4 mm and less than or equal to 10 mm.

[0121] In some embodiments, the heating module 2 further includes a water inlet connector 23 and a water outlet connector 24. The water inlet connector 23 is disposed at the water inlet end of the heating tube 21, and the water outlet connector 24 is disposed at the water outlet end of the heating tube 21.

[0122] In some examples, the water inlet connector 23 can guide external fluid into the heating tube 21. The water inlet connector 23 may include: a water inlet body, which is provided with a water supply port and a water inlet chamber, and the water supply port is connected to the interior of the heating tube 21 through the water inlet chamber.

[0123] Optionally, the water inlet body can be made of metal material, such as stainless steel. The first end of the water inlet body is provided with a water supply port that is connected to the water inlet chamber, and the second end of the water inlet body can be connected to the heating tube 21.

[0124] In some examples, the water outlet connector 24 can guide the fluid in the heating tube 21 to the outside. The water outlet connector 24 may include: a water outlet body, which is provided with a water inlet and a water outlet chamber, and the water inlet is connected to the heating tube 21 through the water outlet chamber.

[0125] Similarly, the water outlet body can be made of metal material, such as stainless steel. The first end of the water outlet body is provided with a water inlet that is connected to the water outlet chamber. The second end of the water outlet body can be connected to the heating pipe 21, and the water outlet chamber is connected to the heating pipe 21.

[0126] In some embodiments, the heating module 2 further includes a first seal 26 and a second seal 29. The water inlet connector 23 is sealed to the water inlet end of the heating tube 21 through the first seal 26, and the water outlet connector 24 is connected to the water outlet end of the heating tube 21 through the second seal 29.

[0127] It should be noted that the first sealing element 26 is sleeved on the end of the water inlet body facing the heating pipe 21, and the first sealing element 26 can form a seal between the water inlet body and the heating pipe 21.

[0128] For example, the first seal 26 may be made of high-temperature resistant rubber material, the second end of the water inlet body may be partially inserted into the heating tube 21, the first seal 26 is sleeved on the second end of the water inlet body, and the first seal 26 is provided with a radially outwardly extending annular abutment flange on the side near the water supply port.

[0129] During installation, the first sealing element 26 can be partially inserted into the heating tube 21 along with the second end of the water inlet body. The first sealing element 26 can simultaneously abut against the second end of the water inlet body and the inner wall of the heating tube 21. At the same time, the annular abutment flange of the first sealing element 26 can also simultaneously abut against the ends of the water inlet body and the heating tube 21. After the water inlet body is fixed to the end of the heating tube 21, the first sealing element 26 can be used to achieve a seal between the water inlet body and the heating tube 21.

[0130] Furthermore, in order to improve the sealing effect, multiple annular sealing flanges can be provided on the outer periphery of the first sealing member 26. These multiple annular sealing flanges are spaced apart along the axial direction of the heating tube 21, and each of these multiple annular sealing flanges can abut against the inner wall of the heating tube 21.

[0131] Therefore, by providing multiple annular sealing flanges on the outer periphery of the first sealing element 26, the sealing effect between the heating tube 21 and the first sealing element 26 can be further improved.

[0132] In addition, the second seal 29 is fitted on the end of the water outlet body facing the heating pipe 21, and the second seal 29 can form a seal between the water outlet body and the heating pipe 21.

[0133] Similarly, the second seal 29 can be made of high-temperature resistant rubber material, and the second end of the water outlet body can be partially inserted into the heating tube 21. The second seal 29 is sleeved on the second end of the water outlet body, and the second seal 29 is provided with a radially outwardly extending annular abutment flange on the side near the water inlet.

[0134] During installation, the second seal 29 can be partially inserted into the heating tube 21 along with the second end of the water outlet body. The second seal 29 can simultaneously abut against the second end of the water outlet body and the inner wall of the heating tube 21. At the same time, the annular abutment flange of the second seal 29 can also simultaneously abut against the ends of the water outlet body and the heating tube 21. After the water outlet body is fixed to the end of the heating tube 21, the second seal 29 can be used to achieve a seal between the water outlet body and the heating tube 21.

[0135] Furthermore, in order to improve the sealing effect, multiple annular sealing flanges can be provided on the outer periphery of the second sealing member 29. These multiple annular sealing flanges are spaced apart along the axial direction of the heating tube 21, and each of these multiple annular sealing flanges can abut against the inner wall of the heating tube 21.

[0136] Therefore, by providing multiple annular sealing flanges on the outer periphery of the second seal 29, the sealing effect between the heating tube 21 and the second seal 29 can be further improved.

[0137] In some embodiments, the heating module 2 further includes an inlet water temperature sensor 25 and an outlet water temperature sensor 30, wherein the inlet water temperature sensor 25 is disposed at the inlet water connector 23 and the outlet water temperature sensor 30 is disposed at the outlet water connector 24.

[0138] The heating module 2 is configured to control the heating temperature of the heating tube 21 based on the inlet water temperature of the inlet water temperature sensor 25 and the outlet water temperature of the outlet water temperature sensor 30.

[0139] In some embodiments, the heating module 2 further includes a first positioning member 27 and a second positioning member 28. Both the first positioning member 27 and the second positioning member 28 include a positioning disk 271 and a plurality of flow holes 272 arranged around the center of the positioning disk 271. The positioning disk 271 of the first positioning member 27 is clamped between the water inlet connector 23 and the first end of the central column 221, and the positioning disk 271 of the second positioning member 28 is clamped between the water outlet connector 24 and the second end of the central column 221.

[0140] In this configuration, the positioning disk 271 of the first positioning member 27 and the first end of the central column 221 are connected by a protrusion and a groove for positioning, and the positioning disk 271 of the second positioning member 28 and the second end of the central column 221 are connected by a protrusion and a groove for positioning.

[0141] In some embodiments, the heating tube 21 includes a heating tube body and a heating element, the heating element being disposed on the heating tube body and configured to heat the heating tube body.

[0142] In some embodiments, at least some of the heating elements and the jet cavity 222 are arranged opposite to each other. Specifically, when multiple jet cavities 222 are provided, the heating elements have multiple heating regions formed on the heating tube body. The multiple heating regions and multiple jet cavities 222 are arranged opposite to each other along the radial direction of the heating tube. This design is beneficial to enhance the jet strengthening effect and minimize the heat loss of the heating elements.

[0143] In some embodiments, the coverage of the heating area of ​​the jet cavity 222 and the heating tube 21 along the axial direction of the heating tube is not less than K, and the value of K is in the range of 85% to 95%, that is, K is greater than or equal to 85% and less than or equal to 95%, for example, K can be 85%, 90% or 95%.

[0144] It should be noted that, in order to maximize heat exchange efficiency within the limited length of the heating tube 21, the coverage of the heating area of ​​the jet cavity 222 and the heating tube 21 along the axial direction is not less than 85% to 95%.

[0145] That is, the sum of the lengths of the multiple jet chambers 222 is 85% to 95% of the total length of the heating area on the heating tube 21. For example, the sum of the lengths of the four jet chambers 221 is 90% of the total length of the heating area on the heating tube 21.

[0146] In some embodiments, the heating element includes one of the following: a thick film resistance heater, a nano-electronic film heater, a stainless steel heater, or a gas heating device.

[0147] In one embodiment, when the heating element is an electric heating element, the heating tube body can be made of a metal material, such as stainless steel or cast aluminum. A thick-film resistance heater, a nano-electronic film heater, or a stainless steel heater is attached to the outside of the heating tube body. When it is necessary to heat the fluid inside the heating tube body, these heaters can be energized. These heaters then generate high temperatures, causing the heating tube body to heat up. When the fluid flows through the heating tube body, the fluid can be heated.

[0148] In one embodiment, when the heating element is a heat exchange assembly, the heating tube body can be made of a metal material, such as stainless steel, and a gas heating device is provided on the outside of the heating tube body. When it is necessary to heat the fluid inside the heating tube body, gas can be supplied to the gas heating device. After obtaining the gas, the gas heating device can ignite the gas to make it burn, thereby heating the heating tube body to raise its temperature. When the fluid flows in the heating tube body, the fluid can also be heated.

[0149] In the second aspect, such as Figure 8 As shown, this embodiment of the invention also provides a control method for the water dispenser described above, comprising the following steps:

[0150] Step 810: Obtain the target water temperature input by the user;

[0151] Understandably, water dispensers can be equipped with an operation panel, allowing users to set the target water temperature according to their actual needs.

[0152] Step 820: Based on the threshold range of the target water intake temperature, control the opening and closing status of the parallel branch, and control the start-up and operation of the pumping components and heating module.

[0153] It is understandable that parallel branches have two states: on and off.

[0154] Based on the threshold range of the target water temperature, the control module can control the parallel branch to shut off, so that the water dispenser works in high-temperature water output mode. At this time, the water supplied by the water supply system is preheated by the heat storage module and heated by the heating module in sequence before being output from the water outlet, ensuring that the water outlet efficiently provides a large flow of high-temperature hot water.

[0155] The control module can also control the parallel branch to operate based on the threshold range of the target water temperature, so that the water dispenser works in low-temperature water output mode. In this mode, the water supplied by the water supply system is directly heated by the heating module and then output from the outlet, ensuring that the outlet outputs hot water at a relatively low temperature.

[0156] Thus, the water dispenser of the present invention can switch between high-temperature water dispensing mode and low-temperature water dispensing mode, which not only meets the diverse water dispensing needs of users, but also can output a large flow of high-temperature hot water in high-temperature water dispensing mode.

[0157] In some embodiments, the step of controlling the opening and closing state of the parallel branch according to the threshold range of the target water intake temperature includes:

[0158] If the target water intake temperature is greater than or equal to the preset temperature, control the parallel branch to shut off.

[0159] If the target water intake temperature is determined to be lower than the preset temperature, the parallel branch circuit is controlled to conduct.

[0160] The preset temperature can be 70-80℃, for example, the preset temperature is 70℃, 75℃ or 80℃.

[0161] In some embodiments, such as Figure 9 As shown, the control method in this embodiment further includes the following steps:

[0162] Step 910: Obtain the target water intake parameters input by the user;

[0163] Understandably, users can confirm that the water dispenser is in water dispensing mode by pressing the water dispensing button on the water dispenser; at the same time, users can set the target water dispensing parameters through the operation panel on the water dispenser, including the target water temperature and the target water volume.

[0164] Step 920: Control the working status of the heating module and pumping components according to the target water intake parameters so that the water output parameters at the outlet are adapted to the target water intake parameters.

[0165] Understandably, when controlling the water output, after the control module starts the heating module and pumping components, it can use the target water intake parameters as the control target to control the heating power of the heating module and the pumping flow rate of the pumping components. While controlling the water output parameters such as the water temperature and flow rate of the water dispenser, it can also ensure that these water output parameters are compatible with the target water intake parameters, thus meeting the user's water intake needs and improving the user experience.

[0166] In some embodiments, such as Figure 10 As shown, the steps for controlling the operating status of the heating module and pumping components according to the target water intake parameters include:

[0167] Step 101: Obtain the inlet and outlet water temperatures of the heating module;

[0168] Step 102: Adjust the pumping flow rate of the pumping component and the heating power of the heating module according to the target water intake temperature, inlet water temperature and outlet water temperature until the outlet water temperature reaches the target water intake temperature.

[0169] Step 103: Calculate the outflow rate of the outlet based on the pumping flow rate and pumping duration of the pumping component.

[0170] Step 104: Determine that the water output from the outlet has reached the target water intake, and control the heating module and pumping components to stop working.

[0171] Understandably, such as Figure 1 As shown, the outlet end of the heating module 2 is equipped with a first temperature sensor 7, which is used to collect the outlet water temperature of the heating module 2; the inlet end of the heating module 2 is equipped with a second temperature sensor 8, which is used to collect the inlet water temperature of the heating module 2.

[0172] Since the heating power of the heating module is P = mC(T2-T1), the inlet water temperature of the heating module is T1, the outlet water temperature is T2, the outlet water flow rate is m, and the specific heat capacity of water is C, the control module can determine the heating power of the heating module according to the above formula.

[0173] During water outlet control, the control module uses the target water intake temperature as the control objective and adjusts the pumping flow rate of the pumping component and the heating power of the heating module until the water outlet temperature of the heating module reaches the target water intake temperature. It also ensures that the fluctuation of the water outlet temperature relative to the target water intake temperature is controlled within a preset range. Specifically, while ensuring that the water outlet temperature of the heating module reaches the target water intake temperature, the pumping flow rate of the pumping component can be increased as much as possible.

[0174] Meanwhile, during the water output control process, the pumping flow rate of the pumping component can be accumulated based on the water output time (pumping duration of the pumping component) to obtain the current water output of the water outlet; when the water output of the water outlet reaches the target water intake, the control module controls the heating module and the pumping component to stop working, the water outlet stops outputting water, and the system returns to standby state.

[0175] Of course, if the user clicks the button to cancel water intake before the water flow from the outlet reaches the target intake volume, the control module will also control the heating module and pump to stop working, and the system will return to standby mode.

[0176] In some embodiments, the control method shown in this embodiment further includes the following steps:

[0177] Once the water intake signal is received, the opening and closing status of the parallel branch is controlled according to the threshold range of the target water intake temperature, and the connection between the control valve and the water outlet of the heating module is also controlled.

[0178] If no water intake signal is received, the parallel branch is shut off, and the outlet of the heating module is connected to the heat storage module or the outlet based on the temperature threshold range of the heat storage material in the heat storage module.

[0179] Understandably, the water dispenser is equipped with a water dispensing button, which is electrically connected to the control module. When the user presses the water dispensing button, the control module of the water dispenser will receive a water dispensing signal.

[0180] When a water dispenser receives a water intake signal, it will operate in water dispensing mode, which includes high-temperature water dispensing mode and low-temperature water dispensing mode. When the control module controls the parallel branch to be cut off, the water dispenser will operate in high-temperature water dispensing mode, while when the control module controls the parallel branch to be turned on, the water dispenser will operate in low-temperature water dispensing mode.

[0181] When no water intake signal is received, the control module will control the parallel branch to shut down and determine whether the heat storage module needs to be controlled based on the threshold range of the temperature of the heat storage material in the heat storage module.

[0182] If the temperature of the heat storage material is greater than or equal to the set temperature, there is no need to control the heat storage module. At this time, the control valve can connect the water outlet and the water outlet of the heating module, and control the pump and the heating module to stop running, so as to ensure that the water dispenser is in standby mode.

[0183] If the temperature of the heat storage material is lower than the set temperature, heat storage control of the heat storage module is required. At this time, the control valve can connect the water outlet of the heating module and the heat storage module, and control the pump and heating module to start operation. In the heat storage mode, the hot water output by the heating module is used to store heat in the heat storage module, thereby reducing equipment costs and energy consumption.

[0184] Finally, it should be noted that the above embodiments are only for illustrating the present invention and not for limiting the present invention. Although the present invention has been described in detail with reference to the embodiments, those skilled in the art should understand that various combinations, modifications, or equivalent substitutions of the technical solutions of the present invention do not depart from the spirit and scope of the technical solutions of the present invention and should be covered within the scope of the claims of the present invention.

Claims

1. A water dispenser, characterized in that, include: A heat storage module (1) is provided with its inlet end connected to a water supply system (5). A parallel branch is provided between the inlet end and the outlet end of the heat storage module (1). The parallel branch can be selectively opened or closed. Heating module (2), the water inlet of the heating module (2) is connected to the water outlet of the heat storage module (1), and the water outlet of the heating module (2) is connected to the water outlet (6); Pumping component (4) is used to drive water flow through the heat storage module (1) and the parallel branch to the heating module (2). The control module is connected to the heating module (2), the parallel branch and the pumping component (4) respectively; The control module is used to control the opening and closing state of the parallel branch according to the threshold range of the target water intake temperature, and to control the pumping component (4) and the heating module (2) to start operation. The heating module (2) includes a heating tube (21) and a jet assembly (22); the water inlet of the heating tube (21) is connected to the water outlet of the heat storage module (1), and the water outlet of the heating tube (21) is connected to the water outlet (6); the jet assembly (22) is disposed inside the heating tube (21), and the jet assembly (22) has a jet cavity (222) and a water inlet and a jet hole (2220) connected to the jet cavity (222), and the jet direction of the jet hole (2220) is towards the inner wall of the heating tube (21); The jet assembly (22) includes a central column (221) and a plurality of jet chambers (222); the plurality of jet chambers (222) are arranged sequentially along the axial direction of the central column (221), and a water passage gap is formed between the side wall of the jet chamber (222) and the inner wall of the heating tube (21); the water inlet is located on the side of the jet chamber (222) facing the heat storage module (1), and the jet hole (2220) is located on the side wall of the jet chamber (222); The jet cavity (222) is a cylindrical cavity, and the diameter of the jet cavity (222) is larger than the diameter of the central column (221). The peripheral wall of the jet cavity (222) is provided with a water-blocking wing, which extends along the circumference of the jet cavity (222). A water-passing gap is formed between the edge of the water-blocking wing and the inner wall of the heating pipe (21). The width of the water-passing gap is smaller than the width of the water-passing gap. In this process, after the fluid passes through the previous jet cavity (222) and exchanges heat with the heating wall of the heating tube (21), it enters the next jet cavity (222) and exchanges heat with the heating wall of the heating tube (21) again, thus repeating the jet heat exchange multiple times.

2. The water dispenser according to claim 1, characterized in that, The control module is used to control the parallel branch to shut off when the target water intake temperature is greater than or equal to the preset temperature; and to control the parallel branch to turn on when the target water intake temperature is less than the preset temperature.

3. The water dispenser according to claim 1, characterized in that, Also includes: An operation panel is used to receive target water intake parameters, and the operation panel is connected to the control module; The control module is used to control the working state of the heating module (2) and the pumping component (4) according to the target water intake parameters, so that the water output parameters of the outlet (6) are adapted to the target water intake parameters; The target water intake parameters include the target water intake temperature and the target water intake volume.

4. The water dispenser according to claim 1, characterized in that, The water outlet of the heating module (2) can be selectively connected to the heat storage module (1) or the water outlet (6) of the water dispenser via a valve control (3); the control module and the valve control (3) are connected. The control module is used to control the parallel branch to shut off, and to control the valve control (3) to connect the outlet of the heating module (2) and the heat storage module (1), so that the heat storage module (1) can use the hot water output by the heating module (2) to store heat.

5. The water dispenser according to claim 4, characterized in that, The outlet of the heating module (2) can be connected to the heat storage module (1) through the valve control (3) to form a circulating water path.

6. The water dispenser according to claim 4, characterized in that, The heat storage module (1) includes a shell (11), a heat exchanger (12), and heat storage material; The shell (11) has a receiving cavity, the heat exchanger (12) is disposed in the receiving cavity, and the heat storage material is filled in the receiving cavity between the heat exchanger (12) and the shell (11); The outlet of the heating module (2) is connected to the first end of the heat exchanger (12) and the outlet (6) through the valve control (3); the first end of the heat exchanger (12) is used to connect to the water supply system (5), and the second end of the heat exchanger (12) is connected to the inlet of the heating module (2).

7. The water dispenser according to claim 6, characterized in that, The heat exchanger (12) includes a coil (121); or, the heat exchanger (12) includes a coil (121) and a fin assembly (122), with at least a portion of the coil (121) passing through the fin assembly (122), or the coil (121) and the fin assembly (122) being stacked.

8. The water dispenser according to claim 6, characterized in that, The heat storage module (1) also includes a heater (13) for heating the heat storage material.

9. A control method for a water dispenser as described in any one of claims 1 to 8, characterized in that, include: Obtain the target water temperature input by the user; Based on the threshold range of the target water intake temperature, the opening and closing status of the parallel branch is controlled, as well as the start-up and operation of the pumping component and the heating module are controlled.

10. The control method according to claim 9, characterized in that, The step of controlling the opening and closing state of the parallel branch according to the threshold range of the target water intake temperature includes: If the target water intake temperature is determined to be greater than or equal to the preset temperature, the parallel branch is controlled to shut down. If the target water intake temperature is determined to be lower than the preset temperature, the parallel branch is controlled to be turned on.

11. The control method according to claim 9, characterized in that, The control method further includes: Obtain the target water intake parameters input by the user; Based on the target water intake parameters, control the working status of the heating module and pumping components to ensure that the water output parameters at the outlet are compatible with the target water intake parameters. The target water intake parameters include the target water intake temperature and the target water intake volume.

12. The control method according to claim 11, characterized in that, The step of controlling the operating state of the heating module and the pumping unit according to the target water intake parameters includes: Obtain the inlet and outlet water temperatures of the heating module; Based on the target water intake temperature, the inlet water temperature, and the outlet water temperature, adjust the pumping flow rate of the pumping component and the heating power of the heating module until the outlet water temperature reaches the target water intake temperature; Calculate the water output of the outlet based on the pumping flow rate and pumping duration of the pumping component. Once the water output from the outlet reaches the target water intake, the heating module and the pumping component are controlled to stop operating.

13. The control method according to any one of claims 9 to 12, characterized in that, Also includes: Once a water intake signal is received, the opening and closing status of the parallel branch is controlled according to the threshold range of the target water intake temperature, and the control valve controls the connection between the water outlet of the heating module and the water outlet. If no water intake signal is received, the parallel branch is controlled to shut off, and the outlet of the heating module is connected to the heat storage module or the water outlet according to the threshold range of the temperature of the heat storage material in the heat storage module.

Images