Water purifier and its control method

Abstract

This application relates to a water purifier and its control method. The water purifier includes: a purified water tank for storing purified water; a first heating element connected to the outlet of the purified water tank, and the first heating element having a first heating channel for heating the purified water; a heat exchange component having a first medium flow channel and a second medium flow channel, wherein the medium in the first medium flow channel can exchange heat with the medium in the second medium flow channel; and a second heating element having a second heating channel for heating the purified water; wherein the first heating channel, the first medium flow channel, the second heating channel, the second medium flow channel, and the water outlet of the water purifier are sequentially connected. The water purifier of this application can quickly produce boiled water at multiple temperature ranges, meeting users' needs for instant access to boiled water and their needs for accessing boiled water at different temperature ranges.

Description

Technical Field

[0001] This application relates to the field of water supply equipment technology, and in particular to a water purifier and its control method. Background Technology

[0002] Boiled water (cooled boiled water or warm water that has been boiled) refers to water that has been heated to boiling and then cooled. People have a need to drink boiled water, and boiled water has a certain regulating effect on the body's physiological functions.

[0003] A water purifier is a water purification device that uses multi-stage filter cartridges to purify water. It uses methods such as filtration, adsorption, and reverse osmosis to physically filter the water.

[0004] In related technologies, water purifiers generally use instant heating to output drinking water. This means the purifier directly heats room temperature water to a set temperature. Since the room temperature water hasn't boiled, it doesn't meet the user's need for boiled water. Conversely, when a user needs boiled water, the purifier heats the room temperature water to boiling. The user then has to wait for the boiled water to cool down naturally, which is a long waiting time and doesn't meet the user's need for instant boiled water. Summary of the Invention

[0005] This application aims to at least solve one of the technical problems existing in the prior art. To this end, this application provides a water purifier and its control method, which can quickly produce boiled water at multiple temperature ranges to meet users' needs for instant boiled water.

[0006] In a first aspect, this application provides a water purifier, comprising:

[0007] A water purification tank is used to store pure water.

[0008] A first heating element is connected to the outlet of the purified water tank, and the first heating element has a first heating channel for heating pure water.

[0009] A heat exchange assembly has a first medium flow channel and a second medium flow channel, wherein the medium in the first medium flow channel is capable of exchanging heat with the medium in the second medium flow channel;

[0010] The second heating element has a second heating channel for heating pure water;

[0011] The first heating channel, the first medium flow channel, the second heating channel, the second medium flow channel, and the water outlet of the water purifier are connected in sequence.

[0012] The water purifier according to the first aspect of this application has at least the following beneficial effects:

[0013] The water purifier of this application is configured with a purified water tank, a first heating element, a heat exchange component, and a second heating element. The first heating channel of the first heating element, the first medium flow channel of the heat exchange component, the second heating channel of the second heating element, the second medium flow channel of the heat exchange component, and the water outlet of the water purifier are sequentially connected. Thus, when a user takes boiled water, the preheated water in the first medium flow channel can exchange heat with the boiling water in the second medium flow channel, thereby obtaining boiled water within a preset temperature range. Users do not need to wait for the boiling water to cool naturally to obtain boiled water, enabling rapid production of boiled water at multiple temperature ranges to meet users' needs for instant boiled water. Furthermore, it does not require the supply of external cooling water to the heat exchange component to quickly produce boiled water, improving water resource utilization.

[0014] In addition, the temperature of the preheated water flowing into the first medium channel can be controlled by adjusting the heating power of the first heating element. The preheated water at different temperatures in the first medium channel exchanges heat with the boiling water in the second medium channel to obtain boiled water in different temperature ranges. In this way, the water purifier can output boiled water in multiple temperature ranges to meet the user's needs for boiled water in different temperature ranges.

[0015] In some embodiments, the heat exchange assembly includes an outer heat exchange tube and an inner heat exchange tube. The inner heat exchange tube is disposed inside the outer heat exchange tube and extends along the trajectory of the outer heat exchange tube. A first medium flow channel is formed between the inner wall of the outer heat exchange tube and the outer wall of the inner heat exchange tube, and a second medium flow channel is formed inside the inner heat exchange tube.

[0016] In some embodiments, the flow direction of the medium in the first medium channel is opposite to that in the second medium channel, and the inlet of the first medium channel and the outlet of the second medium channel are located at the same end.

[0017] In some embodiments, the water purifier further includes a first electronic valve having a first water flow channel and a second water flow channel, the first heating channel being connected to the water outlet of the water purifier through the first water flow channel, the first heating channel also being connected to the first medium flow channel through the second water flow channel, and the first electronic valve being configured to open one of the first water flow channel and the second water flow channel while closing the other.

[0018] In some embodiments, the water purifier further includes a first water circuit board, which has a fifth water inlet, a fifth water outlet, and a fifth water channel connecting the fifth water inlet and the fifth water outlet. The water outlet of the purified water tank is connected to the fifth water inlet, and the water inlet of the first heating element is connected to the fifth water outlet.

[0019] In some embodiments, the first water circuit board is further provided with a sixth water inlet, a sixth water outlet, and a sixth water channel connecting the sixth water inlet and the sixth water outlet. The water outlet of the first medium flow channel is connected to the sixth water inlet, and the water inlet of the second heating element is connected to the sixth water outlet.

[0020] In some embodiments, the water purifier further includes a filter assembly for filtering raw water, the filter assembly having a pure water outlet connected to the water inlet of the purified water tank, and the fifth water channel being equipped with a second electronic valve.

[0021] In some embodiments, the first water circuit board is further provided with a seventh water inlet and a seventh water channel connecting the seventh water inlet and the fifth water inlet, and the pure water outlet of the filter assembly is connected to the seventh water inlet.

[0022] In some embodiments, the fifth waterway is further provided with a booster pump.

[0023] In some embodiments, the water purifier further includes a detection probe for detecting the TDS value and temperature of the purified water flowing out of the water outlet of the water purifier tank.

[0024] Secondly, this application provides a control method for the above-mentioned water purifier, wherein both the first heating element and the second heating element have a heating mode and a non-heating mode;

[0025] The control method includes the following steps:

[0026] Step S1: The first heating element executes a heating mode to heat the pure water flowing through the first heating channel to a first preset temperature; the second heating element executes a heating mode to heat the pure water flowing through the second heating channel to boiling.

[0027] Step S2: Obtain the water temperature at the water outlet of the water purifier. When the water temperature at the water outlet of the water purifier reaches the second preset temperature, open the water outlet.

[0028] The control method for the water purifier according to the second aspect of this application has at least the following beneficial effects:

[0029] The control method of the water purifier disclosed in this application monitors the water temperature at the water outlet of the water purifier. When the water temperature at the water outlet does not reach the second preset temperature, the water outlet remains closed, and the preheated water in the first medium flow channel and the boiling water in the second medium flow channel continuously exchange heat. When the water temperature at the water outlet reaches the second preset temperature, it indicates that the preheated water in the first medium flow channel and the boiling water in the second medium flow channel have reached heat exchange equilibrium. At this time, the boiled water output from the water outlet of the water purifier is boiled water within the preset temperature range. In this way, boiled water within the preset temperature range can be produced quickly and accurately, meeting the user's need for instant boiled water.

[0030] In some embodiments, step S1 further includes the following steps:

[0031] Step S11: Obtain the water temperature at the water outlet of the water purifier. When the water temperature at the water outlet of the water purifier is lower than the second preset temperature, the first heating element executes the heating mode to heat the pure water flowing through the first heating channel to the first preset temperature, and the second heating element executes the non-heating mode.

[0032] Step S12: When the water temperature at the outlet of the water purifier reaches the second preset temperature, the second heating element executes the heating mode.

[0033] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0034] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiments below. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0035] Figure 1 This is a system diagram of a water purifier according to an embodiment of this application.

[0036] Figure 2 This is a partial system diagram of a water purifier according to an embodiment of this application.

[0037] Figure 3 This is a schematic diagram of the heat exchange component according to an embodiment of this application.

[0038] Figure 4 This is an exploded view of the water purifier according to an embodiment of this application.

[0039] Figure 5This is a partial exploded view of the water purifier according to an embodiment of this application.

[0040] Figure 6 This is a schematic diagram of the structure of the second water channel plate in an embodiment of this application. Figure 1 .

[0041] Figure 7 This is a schematic diagram of the structure of the second water channel plate in an embodiment of this application. Figure 2 .

[0042] Figure 8 This is a schematic diagram of the structure of the second water channel plate in an embodiment of this application. Figure 3 .

[0043] Figure 9 This is a schematic diagram of the structure of the first water channel plate in an embodiment of this application.

[0044] Explanation of reference numerals in the attached drawings: Clean water tank 100; First heating element 200; Heat exchange assembly 300; Heat exchange outer tube 310; First medium flow channel 311; Inlet 311a of the first medium flow channel 311; Outlet 311b of the first medium flow channel 311; Heat exchange inner tube 320; Second medium flow channel 321; Outlet 321a of the second medium flow channel 321; Inlet 321b of the second medium flow channel 321; Second heating element 400; First electronic valve 500; First water flow channel 510; Second water flow channel 520; ... Filter assembly 600; booster pump 700; detection probe 800; outlet 900; second electronic valve 20; second water circuit board 30; first outlet 31; second outlet 32; third outlet 33; first inlet 35; second inlet 36; third inlet 37; fourth inlet 38; fourth outlet 39; body support 40; first water circuit board 50; fifth inlet 51; fifth outlet 52; sixth inlet 53; sixth outlet 54; seventh inlet 55; fifth water channel 56; seventh water channel 57. Detailed Implementation

[0045] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0046] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application 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, and therefore should not be construed as a limitation of this application.

[0047] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0048] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0049] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via 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. Similarly, "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.

[0050] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0051] A water purifier is a water purification device that uses multi-stage filter cartridges to purify water. It uses methods such as filtration, adsorption, and reverse osmosis to physically filter the water.

[0052] In related technologies, water purifiers generally use instant heating to output drinking water. This means the purifier directly heats room temperature water to a set temperature. Since the room temperature water hasn't boiled, it cannot meet users' needs for boiled water (cooled boiled water or warm boiled water). Conversely, when users need boiled water, the purifier heats the room temperature water to boiling. Users then have to wait for the boiled water to cool down naturally, which is a long waiting time and cannot meet their need for instant boiled water.

[0053] Based on this, see Figure 1 and Figure 2 This application provides a water purifier, which includes a purified water tank 100, a first heating element 200, a heat exchange component 300, and a second heating element 400.

[0054] The purified water tank 100 is used to store purified water. A first heating element 200 is connected to the outlet of the purified water tank 100 and has a first heating channel for heating the purified water. The heat exchange assembly 300 has a first medium flow channel 311 and a second medium flow channel 321, allowing heat exchange between the medium in the first medium flow channel 311 and the medium in the second medium flow channel 321. The second heating element 400 has a second heating channel for heating the purified water.

[0055] The first heating channel, the first medium flow channel 311, the second heating channel, the second medium flow channel 321, and the water outlet 900 of the water purifier are connected in sequence.

[0056] It should be noted that, in the embodiments of this application, the first heating element 200 and the second heating element 400 can be configured as heating tubes.

[0057] In the use of the water purifier in this embodiment, when the user needs to take boiled water, the water tank 100 delivers pure water to the first heating element 200. The first heating channel in the first heating element 200 preheats the pure water, thereby heating the pure water temperature to a first preset temperature (less than 100 degrees Celsius). The preheated water at the first preset temperature flows sequentially into the first medium flow channel 311 of the heat exchange component 300 and the second heating channel in the second heating element 400. The second heating channel in the second heating element 400 then heats the pure water at the first preset temperature to boiling water at 100°C. The boiling water flows out from the second heating channel and then into the second medium flow channel 321 of the heat exchange component 300.

[0058] Understandably, at this time, boiling water flows in the second medium flow channel 321, and preheated water at the first preset temperature flows in the first medium flow channel 311. The boiling water in the second medium flow channel 321 exchanges heat with the preheated water in the first medium flow channel 311. After the boiling water in the second medium flow channel 321 exchanges heat, it cools down to the second preset temperature of boiled water (cooled boiled water or warm water that has been boiled). The boiled water at the second preset temperature then flows out from the water outlet 900 of the water purifier for the user to use.

[0059] It should be noted that in the process of obtaining boiled water using the above-mentioned water purification mechanism, the first preset temperature can be a specific temperature value or a temperature range. Similarly, the second preset temperature can be a specific temperature value or a temperature range. In the embodiments of this application, both the first preset temperature and the second preset temperature are preferably temperature ranges. The first preset temperature is lower than the second preset temperature.

[0060] It should be understood that the first preset temperature of the preset water flowing into the first medium channel 311 can be controlled by adjusting the heating power of the first heating element 200. The preheated water in different temperature ranges in the first medium channel 311 exchanges heat with the boiling water in the second medium channel 321 to obtain boiled water in different temperature ranges. In this way, the water outlet 900 of the water purifier can output boiled water in multiple temperature ranges to meet the user's needs for boiled water.

[0061] It is easy to understand that the water purifier in this embodiment of the application is configured with a purified water tank 100, a first heating element 200, a heat exchange component 300, and a second heating element 400. The first heating channel of the first heating element 200, the first medium flow channel 311 of the heat exchange component 300, the second heating channel of the second heating element 400, the second medium flow channel 321 of the heat exchange component 300, and the water outlet 900 of the water purifier are sequentially connected. Thus, when a user takes boiled water, the preheated water in the first medium flow channel 311 can exchange heat with the boiling water in the second medium flow channel 321, thereby obtaining boiled water within a preset temperature range. Users do not need to wait for the boiling water to cool naturally to obtain boiled water, enabling rapid production of boiled water at multiple temperature ranges to meet users' needs for instant boiled water. Furthermore, there is no need to supply external cooling water to the heat exchange component 300 to quickly produce boiled water, improving water resource utilization.

[0062] In addition, the temperature of the preheated water flowing into the first medium channel 311 can be controlled by adjusting the heating power of the first heating element 200. The preheated water at different temperatures in the first medium channel 311 exchanges heat with the boiling water in the second medium channel 321 to obtain boiled water in different temperature ranges. In this way, the water outlet 900 of the water purifier can output boiled water in multiple temperature ranges to meet the user's needs for boiled water in different temperature ranges.

[0063] Furthermore, it should be noted that the applicant has discovered that when the water purifier is started cold and the user takes hot water at a higher temperature, cold hot water (at room temperature) will remain in the second medium flow channel 321 of the heat exchange component 300. When the user directly takes hot water at a higher temperature, the cold hot water in the second medium flow channel 321 that is closer to the water outlet 900 will not receive heat exchange from the preset water in the first medium flow channel 311, resulting in the hot water flowing out of the water outlet 900 being lower than the preset temperature, thus reducing the user experience.

[0064] Based on this, when the user takes hot boiled water, the first heating element 200 can heat the pure water entering the first medium flow channel 311 to the first preset temperature. At this time, the water in the first medium flow channel 311 is hot water, and the water in the second medium flow channel 321 is cold boiled water. By turning off the second heating element 400, the second heating channel of the second heating element 400 is in a state of conduction but does not heat the water flowing through it. In this way, the cold boiled water in the second medium flow channel 321 can exchange heat with the hot water in the first medium flow channel 311 to raise the temperature of the boiled water in the second medium flow channel 321 to the second preset temperature. After all the boiled water in the second medium flow channel 321 has been heated by heat exchange, the water outlet 900 of the water purifier can be opened, and the second heating element 400 can be turned on again to restore the second heating channel of the second heating element 400 to the state of heating the water flowing through it, so that the water circuit of the entire water purifier flows normally in the boiled water output mode.

[0065] In this way, the problem of the temperature of the boiled water flowing from the spout 900 being lower than the preset temperature when the water purifier is started cold and the user takes boiled water at a higher temperature can be effectively solved. This can prevent the boiled water flowing from the spout 900 from being cold at first and ensure that the temperature of the boiled water flowing from the spout 900 meets the user's needs.

[0066] See Figure 3 In some embodiments of this application, the heat exchange assembly 300 includes an outer heat exchange tube 310 and an inner heat exchange tube 320. The inner heat exchange tube 320 is disposed inside the outer heat exchange tube 310 and extends along the trajectory of the outer heat exchange tube 310. A first medium flow channel 311 is formed between the inner wall of the outer heat exchange tube 310 and the outer wall of the inner heat exchange tube 320, and a second medium flow channel 321 is formed inside the inner heat exchange tube 320.

[0067] Specifically, the heat exchange assembly 300 includes a metal heat exchange plate, an outer heat exchange tube 310 formed on the heat exchange plate, the outer heat exchange tube 310 extending in a serpentine pattern, and an inner heat exchange tube 320 being a corrugated tube inserted inside the outer heat exchange tube 310 and extending along the trajectory of the outer heat exchange tube 310.

[0068] It is easy to understand that by placing the heat exchange inner tube 320 inside the heat exchange outer tube 310 and making their extension trajectories consistent, the medium in the first medium flow channel 311 and the medium in the second medium flow channel 321 can exchange heat more fully and thoroughly, effectively improving the heat exchange efficiency of the first medium flow channel 311 and the second medium flow channel 321, thereby enabling the water purifier's spout 900 to quickly output boiled water within the temperature range that meets the user's needs.

[0069] Further, see Figure 3The flow direction of the medium in the first medium channel 311 is opposite to that in the second medium channel 321, and the inlet 311a of the first medium channel 311 and the outlet 321a of the second medium channel 321 are at the same end.

[0070] Since the inlet of the first medium flow channel 311 and the outlet of the second medium flow channel 321 are at the same end, when the water purifier is started in a cold state and the user takes hot boiled water, the preheated water heated by the first heating element 200 flows into the first medium flow channel 311 from the inlet and can immediately exchange heat with the cold boiled water in the second medium flow channel 321, thereby raising the temperature of the cold boiled water in the second medium flow channel 321 to the preset temperature. In this way, it is ensured that the boiled water flowing from the second medium flow channel 321 to the outlet 900 can be heated by the first medium flow channel 311, thereby reducing the probability that the boiled water initially flowing out of the outlet 900 is cold boiled water, and further ensuring that the temperature of the boiled water flowing out of the outlet 900 meets the user's needs.

[0071] Furthermore, since the extension trajectory of the second medium flow channel 321 is consistent with that of the first medium flow channel 311, by making the flow direction of the medium in the first medium flow channel 311 opposite to that in the second medium flow channel 321, the heat exchange between the medium in the first medium flow channel 311 and the medium in the second medium flow channel 321 can be made more sufficient and thorough, thereby improving the heat exchange efficiency, increasing the overall efficiency of the water purifier in producing boiled water within the temperature range that meets the user's needs, and enhancing the user experience.

[0072] In some embodiments of this application, see Figure 2 , Figure 4 and Figure 5 The water purifier also includes a first electronic valve 500, which has a first water flow channel 510 and a second water flow channel 520. The first heating channel is connected to the water outlet 900 of the water purifier through the first water flow channel 510. The first heating channel is also connected to the first medium flow channel 311 through the second water flow channel 520. The first electronic valve 500 is configured to open one of the first water flow channel and the second water flow channel and close the other.

[0073] Specifically, the first electronic valve 500 is a multi-way solenoid valve. The first electronic valve 500 can be electrically connected to the controller of the water purifier, thereby allowing the controller to control the opening or closing of the first and second water flow channels within the first electronic valve 500. The water purifier has a boiling water setting and a cooked water setting, which can be switched between each other.

[0074] When the water purifier is in boiling water mode, the first water flow channel 510 within the first electronic valve 500 is open, while the second water flow channel 520 is closed. At this time, the first heating element 200 heats the pure water in the first heating channel to 100°C (boiling water). The boiling water flows sequentially from the outlet of the first heating channel into the first water flow channel 510 and the water outlet 900, and finally flows directly out of the water outlet 900 of the water purifier for the user to use, thus meeting the user's need for boiling water.

[0075] When the water purifier is in the boiled water setting, the first water flow channel 510 within the first electronic valve 500 is closed, while the second water flow channel 520 is open. At this time, the first heating element 200 preheats the pure water in the first heating channel into preheated water. The preheated water flows sequentially from the outlet of the first heating channel into the second water flow channel 520, the first medium flow channel 311, the second heating channel, and the second medium flow channel 321, and finally flows out of the water purifier's spout 900 as boiled water for the user to use, meeting the user's need for instant boiled water.

[0076] It should also be noted that the applicant has also discovered that when the water purifier is started cold and the user directly takes boiling water through the boiling water setting, some cold water (room temperature water) will remain in the first heating channel of the first heating element 200 and the water connecting the first heating element 200 and the water outlet 900 of the water purifier (the first water flow channel 510 in the first electronic valve 500 and the water connecting the first water flow channel 510 and the water outlet 900). When the user takes boiling water, this part of cold water mixes with the boiling water flowing out through the first heating element 200, which will cause the temperature of the water flowing out of the water outlet 900 to be lower than the boiling water temperature.

[0077] Based on this, when a user takes boiling water, the first heating element 200 can preheat the cold water stored in the first heating channel inside the water purifier before the water flows out from the water outlet 900. This raises the temperature of the cold water in the first heating channel to boiling. In this way, after the boiling water in the first heating channel mixes with the water in the connecting water path between the first heating element 200 and the water outlet 900 of the water purifier, the temperature of the water initially flowing out of the first water outlet 900 can be as close as possible to or even equal to the boiling temperature. This reduces the probability that the water temperature flowing out of the water outlet 900 is lower than the boiling temperature when the water purifier is started cold and the user takes boiling water, thus improving the user experience.

[0078] Of course, the volume of water remaining in the first heating channel of the first heating element 200 and the connecting water path between the first heating element 200 and the water outlet 900 of the water purifier can also be reduced in the following way: When the user takes a preset amount of boiling water, the water outlet 900 first outputs a first part of the volume of boiling water. Then, the first heating element 200 heats the first heating channel again to evaporate the water remaining in the first heating channel into water vapor. The water vapor flows along the first heating channel and the connecting water path between the first heating element 200 and the water outlet 900 of the water purifier, thereby pushing the water remaining in the connecting water path between the first heating element 200 and the water outlet 900 of the water purifier towards the water outlet 900, so that the water outlet 900 outputs a second part of the volume of boiling water. The first part of the volume of boiling water and the second part of the volume of boiling water are equal to the preset amount of water that the user needs to take. In this way, the volume of water remaining in the first heating channel of the first heating element 200 and the water passage connecting the first heating element 200 and the water outlet 900 of the water purifier is reduced, thereby reducing the probability that the water temperature flowing out of the water outlet 900 is lower than the boiling water temperature when the water purifier is started cold and the user takes boiling water, thus improving the user experience.

[0079] Further, see Figure 5 , Figure 6 , Figure 7 and Figure 8 The water purifier in this embodiment further includes a second water circuit board 30. The second water circuit board 30 has a first water outlet 31, a second water outlet 32, a third water outlet 33, a first water inlet 35, a second water inlet 36, a third water inlet 37, a first water channel (not shown in the figure) connecting the first water inlet 35 and the first water outlet 31, a second water channel (not shown in the figure) connecting the second water inlet 36 and the second water outlet 32, and a third water inlet 37 and the third water outlet 33. The third water channel (not shown in the figure) is as follows: the second water flow channel 520 of the first electronic valve 500 is connected to the first water inlet 35; the water inlet of the first medium flow channel 311 is connected to the first water outlet 31; the water outlet of the second heating element 400 is connected to the second water inlet 36; the water inlet 321b of the second medium flow channel 321 is connected to the second water outlet 32; the water outlet of the second medium flow channel 321 is connected to the third water inlet 37; and the third water outlet 33 is connected to the water outlet 900 of the water purifier.

[0080] Specifically, the second water circuit board 30 can be installed on the body bracket 40 of the water purifier.

[0081] It is understandable that when the water purifier is in the boiled water setting, the first heating channel of the first heating element 200, the second water flow channel 520 of the first electronic valve 500, the first water channel of the second water circuit board 30, the first medium flow channel 311 of the heat exchange component 300, the second heating channel of the second heating element 400, the second water channel of the second water circuit board 30, the second medium flow channel 321 of the heat exchange component 300, the third water channel of the second water circuit board 30, and the water outlet 900 of the water purifier are connected in sequence.

[0082] It is easy to understand that by setting up a second water circuit board 30 and integrating a first water outlet 31, a second water outlet 32, a third water outlet 33, a first water inlet 35, a second water inlet 36, a third water inlet 37, a first water channel connecting the first water inlet 35 and the first water outlet 31, a second water channel connecting the second water inlet 36 and the second water outlet 32, and a third water channel connecting the third water inlet 37 and the third water outlet 33, the water circuit connection requirements with the first electronic valve 500, the heat exchange component 300, the second heating element 400, and the water outlet 900 of the water purifier can be met simultaneously. The second water circuit board 30 can be molded in one go, reducing the number of water pipes and adapters used in the water circuit of the water purifier, improving the production and assembly efficiency of the water purifier, and also reducing the risk of water leakage in the water circuit of the water purifier.

[0083] Furthermore, see also Figure 5 , Figure 6 , Figure 7 and Figure 8 The second water circuit board 30 is also provided with a fourth water inlet 38, a fourth water outlet 39, and a fourth water channel (not shown in the figure) connecting the fourth water inlet 38 and the fourth water outlet 39. The first water flow channel 510 of the first electronic valve 500 is connected to the fourth water inlet 38, and the fourth water outlet 39 is connected to the water outlet 900 of the water purifier.

[0084] It is understandable that when the water purifier is in the boiling water setting, the first heating channel of the first heating element 200, the first water flow channel 510 of the first electronic valve 500, the fourth water channel on the second water circuit board 30, and the water outlet 900 of the water purifier are connected in sequence.

[0085] It is easy to understand that by further integrating the fourth inlet 38, the fourth outlet 39, and the fourth water channel connecting the fourth inlet 38 and the fourth outlet 39 into the second water circuit board 30, the water circuit connection requirements with the first electronic valve 500 and the water outlet 900 of the water purifier can be met simultaneously. This further reduces the number of water pipes and adapters used in the water circuit of the water purifier, improves the production and assembly efficiency of the water purifier, and also reduces the risk of water leakage in the water circuit of the water purifier.

[0086] In some embodiments of this application, see Figure 4 and Figure 9 The water purifier also includes a first water circuit board 50, which has a fifth water inlet 51, a fifth water outlet 52, and a fifth water channel 56 connecting the fifth water inlet 51 and the fifth water outlet 52. The outlet of the purified water tank 100 is connected to the fifth water inlet 51, and the inlet of the first heating element 200 is connected to the fifth water outlet 52. The first water circuit board 50 can be installed on the body support 40 of the water purifier.

[0087] It is easy to understand that by integrating the fifth inlet 51, the fifth outlet 52, and the fifth water channel 56 connecting the fifth inlet 51 and the fifth outlet 52 into the first water circuit board 50, the water circuit connection requirements with the inlet of the first heating element 200 and the outlet of the purified water tank 100 can be met simultaneously. This further reduces the number of water pipes and adapters used in the water circuit of the water purifier, improves the production and assembly efficiency of the water purifier, and also reduces the risk of water leakage in the water circuit of the water purifier.

[0088] Furthermore, see also Figure 4 and Figure 9 The first water circuit plate 50 is also provided with a sixth water inlet 53, a sixth water outlet 54 and a sixth water channel (not shown in the figure) connecting the sixth water inlet 53 and the sixth water outlet 54. The outlet of the first medium flow channel 311 is connected to the sixth water inlet 53, and the inlet of the second heating element 400 is connected to the sixth water outlet 54.

[0089] It is easy to understand that by further integrating the sixth inlet 53, the sixth outlet 54, and the sixth water channel connecting the sixth inlet 53 and the sixth outlet 54 into the first water circuit board 50, the water circuit connection requirements of the outlet of the first medium flow channel 311 and the inlet of the second heating element 400 can be met simultaneously. This further reduces the number of water pipes and adapters used in the water circuit of the water purifier, improves the production and assembly efficiency of the water purifier, and also reduces the risk of water leakage in the water circuit of the water purifier.

[0090] Furthermore, see also Figure 1 The water purifier also includes a filter assembly 600, which is used to filter raw water. The pure water outlet of the filter assembly 600 is connected to the inlet of the purified water tank 100, and the fifth water channel 56 is equipped with a second electronic valve 20. The filter assembly 600 can be a composite filter element.

[0091] The first water circuit board 50 is also provided with a seventh water inlet 55 and a seventh water channel 57 connecting the seventh water inlet 55 and the fifth water inlet 51. The pure water outlet of the filter component 600 is connected to the seventh water inlet 55, thereby meeting the water circuit connection requirements with the pure water outlet of the filter component 600, further reducing the number of water pipes and adapters used in the water circuit of the water purifier, improving the production and assembly efficiency of the water purifier, and reducing the risk of water leakage in the water circuit of the water purifier.

[0092] Specifically, the water purifier also includes a raw water tank for storing raw water, and the outlet of the raw water tank is connected to the raw water inlet of the filter assembly 600. In this way, the filter assembly 600 filters the raw water output from the raw water tank, and the resulting pure water enters the purified water tank 100 through the inlet, thus ensuring a sufficient supply of pure water to the purified water tank 100 in a timely manner.

[0093] The second electronic valve 20 is configured as a solenoid valve. The controller of the water purifier is electrically connected to the second electronic valve 20 to control its opening and closing. A booster pump (not shown in the figure) is installed on the seventh water channel 57. The booster pump draws out the pure water produced by the filter assembly 600 and delivers it to the purified water tank 100 through its outlet, supplying pure water to the purified water tank 100 and ensuring it stores sufficient pure water for user use. The booster pump is electrically connected to the controller of the water purifier.

[0094] It should be noted that when a user takes water, the water purifier's controller opens the second electronic valve 20 and stops the booster pump on the seventh water channel 57. The fifth water channel is then opened, and the filter assembly 600 stops producing water, meaning the filter assembly 600 stops supplying pure water to the purified water tank 100. The pure water in the purified water tank 100 flows out through its bottom outlet and enters the first heating channel of the first heating element 200 through the fifth water channel 56, supplying the first heating element 200 with pure water to be heated, thus meeting the user's water needs.

[0095] When the water tank 100 is low on water, the water purifier's controller closes the second electronic valve 20 and activates the booster pump on the seventh water channel 57. The filter assembly 600 then begins producing water. The purified water produced by the filter assembly 600 is delivered to the water tank 100 through its outlet, thus supplying purified water to the tank. During this process, the second electronic valve 20 closes, blocking the fifth water channel 56. This prevents purified water in the seventh water channel 57 from flowing into the first heating element 200, thus preventing overflow from the water outlet 900 during the water production process of the filter assembly 600. It also ensures that all purified water produced by the filter assembly 600 is delivered to the water tank 100, improving the efficiency of the filter assembly 600 in supplying purified water to the water tank 100.

[0096] In some embodiments of this application, see Figure 1 and Figure 9 The fifth waterway 56 is also equipped with a booster pump 700.

[0097] It is easy to understand that the booster pump 700 is used to extract pure water from the clean water tank 100 and deliver it to the first heating element 200.

[0098] See Figure 1 and Figure 9 In some embodiments of this application, the water purifier further includes a detection probe 800, which is used to detect the TDS value and temperature of the pure water flowing out of the outlet of the water purifier tank 100.

[0099] Specifically, the detection probe 800 can be a detection probe that integrates a TDS probe and a temperature sensing bulb. The detection probe 800 is electrically connected to the controller of the water purifier. The controller includes a display area. The detection probe 800 transmits the detection signals of the TDS and water temperature values ​​of the pure water flowing out of the outlet of the water purifier tank 100 to the controller. The controller displays the TDS value and water temperature in the display area so that the user can observe the water quality of the pure water in the water purifier tank 100 in real time and realize real-time feedback to the user on the water purification effect of the water purifier.

[0100] This application also provides a control method for a water purifier according to any of the above embodiments, wherein the first heating element 200 and the second heating element 400 of the water purifier both have a heating mode and a non-heating mode;

[0101] The control method includes the following steps:

[0102] Step S1: The first heating element 200 executes the heating mode to heat the pure water flowing through the first heating channel to the first preset temperature, and the second heating element 400 executes the heating mode to heat the pure water flowing through the second heating channel to boiling.

[0103] Step S2: Obtain the water temperature at the water outlet 900 of the water purifier. When the water temperature at the water outlet 900 of the water purifier reaches the second preset temperature, open the water outlet 900.

[0104] The control method of the water purifier in this application monitors the water temperature at the water outlet 900 of the water purifier. When the water temperature at the water outlet 900 does not reach the second preset temperature, the water outlet 900 remains closed, and the preheated water in the first medium flow channel 311 and the boiling water in the second medium flow channel 321 continuously exchange heat. When the water temperature at the water outlet 900 reaches the second preset temperature, it indicates that the preheated water in the first medium flow channel 311 and the boiling water in the second medium flow channel 321 have reached heat exchange equilibrium. At this time, the boiled water output from the water outlet 900 of the water purifier is boiled water within the preset temperature range. In this way, boiled water within the preset temperature range is produced quickly and accurately, meeting the user's need for instant boiled water.

[0105] It should be noted that in the process of obtaining boiled water using the above-mentioned water purification mechanism, the first preset temperature can be a specific temperature value or a temperature range. Similarly, the second preset temperature can be a specific temperature value or a temperature range. In the embodiments of this application, both the first preset temperature and the second preset temperature are preferably temperature ranges. The first preset temperature is lower than the second preset temperature.

[0106] It should be understood that the first preset temperature of the preset water flowing into the first medium channel 311 can be controlled by adjusting the heating power of the first heating element 200. The preheated water in different temperature ranges in the first medium channel 311 exchanges heat with the boiling water in the second medium channel 321 to obtain boiled water in different temperature ranges. In this way, the water outlet 900 of the water purifier can output boiled water in multiple temperature ranges to meet the user's needs for boiled water.

[0107] Furthermore, it should be noted that the applicant has discovered that when the water purifier is started cold and the user takes hot water at a higher temperature, cold hot water will remain in the second medium flow channel 321 of the heat exchange component 300. When the user directly takes hot water at a higher temperature, the cold hot water in the second medium flow channel 321 that is closer to the water outlet 900 will not receive heat exchange from the preset water in the first medium flow channel 311. This results in the hot water flowing out of the water outlet 900 being colder than the preset temperature, thus reducing the user experience.

[0108] Based on this, in some embodiments of this application, step S1 further includes the following steps:

[0109] Step S11: Obtain the water temperature at the water outlet 900 of the water purifier. When the water temperature at the water outlet 900 of the water purifier is lower than the second preset temperature, the first heating element 200 executes the heating mode to heat the pure water flowing through the first heating channel to the first preset temperature, and the second heating element 400 executes the non-heating mode.

[0110] Step S12: When the water temperature at the water outlet 900 of the water purifier reaches the second preset temperature, the second heating element 400 executes the heating mode.

[0111] It should be noted that when a user takes hotter boiled water, the water purifier first checks the water temperature at the outlet 900. When the water temperature at the outlet 900 is lower than the second preset temperature, the first heating element 200 operates in heating mode, and the second heating element 400 operates in non-heating mode. The first heating element 200 can heat the pure water in the first medium flow channel 311 to the first preset temperature. At this time, the water in the first medium flow channel 311 is hot water, and the water in the second medium flow channel 321 is cold boiled water. By turning off the second heating element 400, the second heating element 400's second heating mode is activated. The hot channel is in a state of being open but not heating the water flowing through it. In this way, the cold boiled water in the second medium channel 321 can exchange heat with the hot water in the first medium channel 311 to raise the temperature of the boiled water in the second medium channel 321 to the second preset temperature. After all the boiled water in the second medium channel 321 has been heated by heat exchange, the water outlet 900 of the water purifier can be opened and the second heating element 400 can be turned on again, so that the second heating channel of the second heating element 400 can return to the state of heating the water flowing through it, so that the water circuit of the entire water purifier can flow normally in the boiled water output mode.

[0112] In this way, the problem of the temperature of the boiled water flowing from the spout 900 being lower than the preset temperature when the water purifier is started cold and the user takes boiled water at a higher temperature can be effectively solved. This can prevent the boiled water flowing from the spout 900 from being cold at first and ensure that the temperature of the boiled water flowing from the spout 900 meets the user's needs.

[0113] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments 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.

[0114] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A water purifier, characterized in that, include: A water purification tank is used to store pure water. A first heating element is connected to the outlet of the purified water tank, and the first heating element has a first heating channel for heating pure water. A heat exchange assembly has a first medium flow channel and a second medium flow channel, wherein the medium in the first medium flow channel is capable of exchanging heat with the medium in the second medium flow channel; The second heating element has a second heating channel for heating pure water; The first heating channel, the first medium flow channel, the second heating channel, the second medium flow channel, and the water outlet of the water purifier are connected in sequence. The heat exchange assembly includes an outer heat exchange tube and an inner heat exchange tube. The inner heat exchange tube is disposed inside the outer heat exchange tube and extends along the trajectory of the outer heat exchange tube. A first medium flow channel is formed between the inner wall of the outer heat exchange tube and the outer wall of the inner heat exchange tube. A second medium flow channel is formed inside the inner heat exchange tube. The flow direction of the medium in the first medium flow channel is opposite to that in the second medium flow channel, and the inlet of the first medium flow channel and the outlet of the second medium flow channel are located at the same end. When a user needs to use boiled water, the water tank delivers pure water to the first heating element. The first heating channel preheats the pure water to a first preset temperature. The preheated water at the first preset temperature flows into the first medium channel and the second heating channel. The second heating channel then heats the pure water at the first preset temperature to boiling water at 100°C. The boiling water flows out of the second heating channel and into the second medium channel. The boiling water in the second medium channel exchanges heat with the preheated water in the first medium channel. After exchanging heat, the boiling water in the second medium channel cools down to boiled water at the second preset temperature. The boiled water at the second preset temperature then flows out from the water outlet. The first preset temperature is less than 100°C. When the water purifier is started from a cold state and the user takes out hot boiled water, the preheated water heated by the first heating element flows into the first medium flow channel from the inlet of the first medium flow channel. It can immediately exchange heat with the cold boiled water in the second medium flow channel, thereby raising the temperature of the cold boiled water in the second medium flow channel to the preset temperature. When the water purifier is started from a cold state and the user takes out hot boiled water, the first heating element heats the pure water entering the first medium flow channel to the first preset temperature, so that the water in the first medium flow channel is hot water and the water in the second medium flow channel is cold boiled water. The second heating element is turned off, so that the second heating channel is in a state of conduction but does not heat the water flowing through it, so that the cold boiled water in the second medium flow channel exchanges heat with the hot water in the first medium flow channel to raise the temperature of the boiled water in the second medium flow channel to the second preset temperature. After all the boiled water in the second medium flow channel has been heated by heat exchange, the water outlet is opened and the second heating element is turned on again, so that the second heating channel returns to the state of heating the water flowing through it.

2. The water purifier according to claim 1, characterized in that, The water purifier also includes a first electronic valve, which has a first water flow channel and a second water flow channel. The first heating channel is connected to the water outlet of the water purifier through the first water flow channel. The first heating channel is also connected to the first medium flow channel through the second water flow channel. The first electronic valve is configured to open one of the first water flow channel and the second water flow channel and close the other.

3. The water purifier according to claim 1, characterized in that, The water purifier also includes a first water circuit board, which has a fifth water inlet, a fifth water outlet, and a fifth water channel connecting the fifth water inlet and the fifth water outlet. The water outlet of the purified water tank is connected to the fifth water inlet, and the water inlet of the first heating element is connected to the fifth water outlet.

4. The water purifier according to claim 3, characterized in that, The first water circuit board is also provided with a sixth water inlet, a sixth water outlet, and a sixth water channel connecting the sixth water inlet and the sixth water outlet. The water outlet of the first medium flow channel is connected to the sixth water inlet, and the water inlet of the second heating element is connected to the sixth water outlet.

5. The water purifier according to claim 3, characterized in that, The water purifier also includes a filter assembly for filtering raw water. The pure water outlet of the filter assembly is connected to the water inlet of the purified water tank, and the fifth water channel is equipped with a second electronic valve.

6. The water purifier according to claim 5, characterized in that, The first water circuit board is also provided with a seventh water inlet and a seventh water channel connecting the seventh water inlet and the fifth water inlet, and the pure water outlet of the filter component is connected to the seventh water inlet.

7. The water purifier according to claim 3, characterized in that, The fifth waterway is also equipped with a booster pump.

8. The water purifier according to claim 1, characterized in that, The water purifier also includes a detection probe, which is used to detect the TDS value and temperature of the pure water flowing out of the water outlet of the water purifier tank.

9. A control method for a water purifier as described in any one of claims 1 to 8, characterized in that, Both the first heating element and the second heating element have a heating mode and a non-heating mode; The control method includes the following steps: Step S1: The first heating element executes a heating mode to heat the pure water flowing through the first heating channel to a first preset temperature; the second heating element executes a heating mode to heat the pure water flowing through the second heating channel to boiling. Step S2: Obtain the water temperature at the water outlet of the water purifier. When the water temperature at the water outlet of the water purifier reaches the second preset temperature, open the water outlet.

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