Waterway board, waterway board assembly and water purifier

Abstract

The application relates to the field of water purification equipment, and discloses a waterway plate, a waterway plate assembly and a water purifier, which comprise a plate body, an original water inlet pipe, a first multi-way pipe, a second multi-way pipe and a pure water outlet pipe; a three-dimensional layout of the pipes is arranged on the plate body in the longitudinal direction, the vertical direction and the transverse direction; the flow channels for original water inlet, primary filtration and secondary filtration are integrated on the plate body; the complex flow channel function is realized in the limited space; thus, the miniaturization of the water purifier is facilitated; meanwhile, the water delivery connection end and the component pipe connection end are arranged on the two sides of the plate body respectively; the filtered water bodies can be directly taken on one side; the pipe of the internal component is connected with the multiple pipe mouths on the other side of the plate body; the space interference between the pipes and the pipe stacking are avoided; the installation space is saved; and the installation adaptability of the waterway plate is improved.

Description

Technical Field

[0001] This application relates to the field of water purification equipment, and in particular to a water circuit board, a water circuit board assembly, and a water purifier. Background Technology

[0002] Current kitchen water purifiers achieve graded filtration of tap water by connecting directly to the faucet, outputting low-impurity pure water and high-impurity concentrated water as needed. The purifier integrates core components such as filter cartridges, pumps, and control boards. However, due to internal space limitations, the water circuit board must integrate a complex flow channel structure within a limited volume, resulting in tight axial spacing between channels. This leads to insufficient space for expansion functions and a limited number of pre-installed pipe openings. Adding pipe openings directly to the water circuit board can easily cause spatial interference with internal flow channels, control switches, and detection elements, resulting in poor installation adaptability. This not only increases the complexity of the piping layout but also forces the internal space to be squeezed, further restricting the miniaturization of water purifiers. Utility Model Content

[0003] The present invention aims to improve at least one technical problem in the prior art. Therefore, one objective of this application is to optimize the piping of the water circuit board and save installation space.

[0004] This application provides a water circuit board, comprising a board body, a raw water inlet pipe, a first multi-port pipe, a second multi-port pipe, and a pure water outlet pipe; the raw water inlet pipe is longitudinally disposed on the board body for introducing raw water into a first filter element; the first multi-port pipe includes a longitudinally extending primary filtration inlet pipe and a primary filtration outlet pipe, and a vertically extending primary filtration supply pipe, wherein the primary filtration inlet pipe, the primary filtration outlet pipe, and the primary filtration supply pipe are all disposed on the board body and interconnected, the primary filtration inlet pipe and the primary filtration outlet pipe are arranged opposite to each other, and the primary filtration inlet pipe is used to communicate with the outlet end of the first filter element; the second multi-port pipe includes a transversely extending main pipe and a longitudinally extending secondary filter element. The system includes a filter inlet pipe, a longitudinally extending return pipe, and the main pipe, secondary filter inlet pipe, and return pipe, all of which are installed on the plate and interconnected. The return pipe is located on the side of the secondary filter inlet pipe away from the primary filter inlet pipe. The main pipe is connected to and communicates with the primary filter supply pipe. The pure water outlet pipe includes a longitudinally extending pure water drain pipe, a vertically extending secondary filter outlet pipe, and a transversely extending return connection pipe. The pure water drain pipe, the secondary filter outlet pipe, and the return connection pipe are all installed on the plate and interconnected. The return connection pipe communicates with the return pipe. The secondary filter outlet pipe is used to communicate with the outlet end of the second filter element.

[0005] The inlet end of the raw water inlet pipe, the pure water drain pipe, and the primary filter outlet pipe are all located on one side of the plate, while the outlet end of the raw water inlet pipe, the primary filter inlet pipe, the return pipe, and the secondary filter outlet pipe are located on the other side of the plate.

[0006] According to some technical solutions of this application, the first multi-port pipe further includes a first connecting pipe extending longitudinally, and the second multi-port pipe further includes a second connecting pipe extending longitudinally. Both the first connecting pipe and the second connecting pipe are disposed on the plate. One end of the first connecting pipe is connected to the primary filter inlet pipe, and the other end is used to connect to the inlet end of the solenoid valve that controls the switch of the primary filter water supply pipe. One end of the second connecting pipe is connected to the main pipe, and the other end is used to connect to the outlet end of the solenoid valve that controls the switch of the primary filter water supply pipe.

[0007] According to some technical solutions of this application, the second multi-channel tube further includes at least one detection tube extending vertically, the detection tube being disposed on the plate body, one end of the detection tube being connected to the main tube, and the other end being used to connect to the detection element.

[0008] According to some technical solutions of this application, the pure water outlet pipe further includes a third connecting pipe extending longitudinally. The third connecting pipe is disposed on the plate body. One end of the third connecting pipe is connected to and communicates with the return connecting pipe, and the other end is used to connect to the water inlet end of the solenoid valve that controls the return switch. One end of the return pipe is connected to and communicates with the main pipe, and the other end is used to connect to the water outlet end of the solenoid valve that controls the return switch.

[0009] According to some technical solutions of this application, the pure water outlet pipe further includes a first heat dissipation connecting pipe and a second heat dissipation connecting pipe extending longitudinally. The second heat dissipation connecting pipe is located below the first heat dissipation connecting pipe. One end of the first heat dissipation connecting pipe is connected to the secondary filter outlet pipe, and the other end is used to connect to the inlet end of the water-cooled heat dissipation pipe. One end of the second heat dissipation connecting pipe is connected to the secondary filter outlet pipe, and the other end is used to connect to the outlet end of the water-cooled heat dissipation pipe.

[0010] According to some technical solutions of this application, the plate body is further provided with a concentrated water inlet pipe, the concentrated water inlet pipe includes a concentrated water outlet pipe extending vertically and a concentrated water drain pipe extending longitudinally, the concentrated water outlet pipe is connected to and communicates with the concentrated water drain pipe, the concentrated water inlet pipe is located beside the secondary filter outlet pipe, and the concentrated water outlet pipe is used to communicate with the discharge end of the second filter element.

[0011] According to some technical solutions of this application, it also includes an expansion tube extending longitudinally, which is disposed on the plate and located between the concentrated water drain pipe and the pure water drain pipe.

[0012] A second aspect of this application provides a water circuit board assembly, comprising: a first one-way valve, a second one-way valve, a first control valve, and a second control valve, and further comprising the water circuit board as described above; the first one-way valve is disposed in the return pipe, the second one-way valve is disposed in the secondary filter outlet pipe and located between the first heat dissipation connecting pipe and the second heat dissipation connecting pipe; the inlet and outlet of the first control valve are respectively connected to the first connecting pipe and the second connecting pipe, and the inlet and outlet of the second control valve are respectively connected to the third connecting pipe and the return pipe.

[0013] According to some technical solutions of this application, the water circuit board assembly further includes a booster pump and a water quality detection element. The inlet end of the booster pump is connected to the secondary filter inlet pipe, and the water quality detection element is connected to the detection pipe.

[0014] A third aspect of this application provides a water purifier that includes a water circuit board or water circuit board assembly as described above.

[0015] The water circuit board provided in this application has at least the following beneficial effects: by integrating the flow channels of raw water inlet, primary filtration, and secondary filtration into a single board through the three-dimensional layout of longitudinal, vertical, and transverse pipes on the board, complex flow channel functions are realized within a limited space, which is conducive to the miniaturization of water purifiers; at the same time, by setting the water supply connection end and the component pipe connection end on both sides of the board, multiple filtered water bodies can be directly taken from one side, and the internal component pipes can be connected to multiple pipe ports on the other side of the board, avoiding spatial interference and pipe stacking between pipes, saving installation space, and improving the installation adaptability of the water circuit board. Attached Figure Description

[0016] Figure 1 This is one of the three-dimensional structural schematic diagrams of the water channel plate provided in the embodiments of this application;

[0017] Figure 2 A structural diagram of the water channel plate provided in an embodiment of this application;

[0018] Figure 3 A second three-dimensional structural schematic diagram of the water channel plate provided in the embodiments of this application;

[0019] Figure 4 This is a structural diagram of the water channel plate provided in an embodiment of this application from another perspective.

[0020] In the attached diagram: 100 - Plate; 200 - Raw water inlet pipe; 300 - First multi-port pipe; 400 - Second multi-port pipe; 500 - Pure water outlet pipe; 600 - Concentrate inlet pipe; 700 - Expansion pipe; 310 - Primary filter inlet pipe; 320 - Primary filter supply pipe; 330 - First connecting pipe; 340 - Primary filter outlet pipe; 410 - Main pipe; 420 - Secondary filter inlet pipe; 430 - Return pipe; 440 - Secondary connecting pipe; 450 - Detection pipe; 510 - Pure water drain pipe; 520 - Secondary filter outlet pipe; 530 - Return connecting pipe; 540 - Third connecting pipe; 550 - First heat dissipation connecting pipe; 560 - Secondary heat dissipation connecting pipe; 610 - Concentrate outlet pipe; 620 - Concentrate drain pipe. Detailed Implementation

[0021] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0022] In the description of this application, it should be understood that the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Regarding directional descriptions, such as "up," "down," "front," "back," "left," and "right," the directions or positional relationships indicated are based on the directions or positional relationships 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; therefore, they should not be construed as limitations on this application. In the description of this utility model, unless otherwise expressly limited, terms such as "set," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0023] The following is combined with Figures 1 to 4 The embodiments of this utility model are described below.

[0024] This application provides a water circuit board, which includes a board body 100, a raw water inlet pipe 200, a first multi-way pipe 300, a second multi-way pipe 400, and a pure water outlet pipe 500.

[0025] The raw water inlet pipe 200 is longitudinally arranged on the plate 100 and is used to pass raw water into the first filter element. That is, the raw water is connected to the raw water inlet pipe 200 and the other end of the raw water inlet pipe 200 is connected to the first filter element, so that the raw water flows in from the inlet end of the raw water inlet pipe 200 on one side of the plate 100 and is transported to the inlet end of the first filter element through the longitudinal pipeline.

[0026] The first multi-channel pipe 300 includes a longitudinally extending pre-filtration inlet pipe 310 and a pre-filtration outlet pipe 340, and a vertically extending pre-filtration supply pipe 320. The pre-filtration inlet pipe 310, the pre-filtration outlet pipe 340, and the pre-filtration supply pipe 320 are all installed on the plate 100 and are interconnected. The pre-filtration inlet pipe 310 and the pre-filtration outlet pipe 340 are arranged opposite to each other. The pre-filtration inlet pipe 310 is used to connect with the outlet end of the first filter element. That is, the outlet end of the first filter element is connected to the pre-filtration inlet pipe 310, so that the pre-filtered water after being filtered by the first filter element flows from the outlet end of the first filter element to the pre-filtration inlet pipe 310, forming a branch on the pre-filtration inlet pipe 310. One branch flows out along the pre-filtration outlet pipe 340 and can be directly used as domestic water. The other branch flows out along the vertical pre-filtration supply pipe 320.

[0027] The second multi-port pipe 400 includes a main pipe 410 extending laterally, a secondary filtration inlet pipe 420 extending longitudinally, and a return pipe 430 extending longitudinally. The main pipe 410, the secondary filtration inlet pipe 420, and the return pipe 430 are all installed on the plate 100 and are interconnected. The return pipe 430 is located on the side of the secondary filtration inlet pipe 420 away from the primary filtration inlet pipe 310. The main pipe 410 is connected to and communicates with the primary filtration supply pipe 320. That is, the primary filtered water flows into the main pipe 410 of the second multi-port pipe through the primary filtration supply pipe 320, then flows laterally to the secondary filtration inlet pipe 420, and then flows to the inlet end of the second filter element, such as to the existing RO membrane filter element. Since the RO membrane pore size of the RO reverse osmosis filter element is very small, it can only allow water molecules to pass through, so it is necessary to pressurize it with a water pump. That is, a booster pump needs to be installed between the second filter element and the secondary filtration inlet pipe 420.

[0028] The pure water outlet pipe 500 includes a longitudinally extending pure water drain pipe 510, a vertically extending secondary filtration outlet pipe 520, and a transversely extending return connection pipe 530. The pure water drain pipe 510, secondary filtration outlet pipe 520, and return connection pipe 530 are all installed on the plate 100 and are interconnected. The return connection pipe 530 is connected to the return pipe 430. The secondary filtration outlet pipe 520 is used to connect to the outlet end of the second filter element; that is, the pure water filtered by the second filter element flows from the outlet end of the second filter element into the longitudinally extending secondary filtration outlet pipe 500. The filtered water outlet pipe 520 branches out from the secondary filtered water outlet pipe 520. One branch flows out along the horizontal pure water drain pipe 510 to serve as the outlet for directly drinkable pure water. The other branch flows in along the return connection pipe 530, and then flows along the return pipe 430 to the main pipe 410, forming a loop with the return connection pipe 530. This returns the water to the front of the booster pump, diluting the concentration at the front end of the RO membrane, balancing the osmotic pressure on both sides of the membrane, and reducing the accumulation of stagnant water. This allows subsequent components to control whether the water is returned to the front end for further filtration or discharged.

[0029] The inlet end of the raw water inlet pipe 200, the pure water drain pipe 510, and the primary filter outlet pipe 340 are all located on one side of the plate 100, while the outlet end of the raw water inlet pipe 200, the primary filter inlet pipe 310, the return pipe 430, and the secondary filter outlet pipe 520 are located on the other side of the plate 100. This concentrates the water intake points on one side of the plate 100, facilitating connection to external water supply or direct access to filtered water, enabling on-demand access. Multiple other interfaces are located on the other side of the plate 100, facilitating quick connection of internal components and reducing interference between water intake ports and component connection ports.

[0030] Therefore, by using a three-dimensional layout of longitudinal, vertical, and horizontal pipes, the flow channels for raw water inlet, primary filtration, and secondary filtration are integrated into a single plate 100. This achieves complex flow channel functions within a limited space without the need for additional pipe connections, thus facilitating the miniaturization of the water purifier. At the same time, the water supply connection end and the component pipe connection end are respectively located on both sides of the plate 100. Multiple types of filtered water can be directly accessed on one side of the plate 100, while the internal component pipes can be directly connected to multiple pipe ports on the other side of the plate 100. This avoids spatial interference and pipe stacking between pipes, saving installation space and preventing spatial interference between pipes.

[0031] In some embodiments, the first multi-way pipe 300 further includes a longitudinally extending first connecting pipe 330, and the second multi-way pipe 400 further includes a longitudinally extending second connecting pipe 440. Both the first connecting pipe 330 and the second connecting pipe 440 are disposed on the plate 100. One end of the first connecting pipe 330 is connected to the primary filter inlet pipe 310, and the other end is used to connect to the inlet end of a solenoid valve that controls the switching of the primary filter supply pipe 320. One end of the second connecting pipe 440 is connected to the main pipe 410, and the other end is used to connect to the outlet end of the solenoid valve that controls the switching of the primary filter supply pipe 320. Thus, the solenoid valve inlet end is connected via the first connecting pipe 330, and the solenoid valve outlet end is connected via the second connecting pipe 440. The solenoid valve can be configured to allow water flow when it is open, so that the opening and closing of the water passage between the primary filter supply pipe 320 and the main pipe 410 can be controlled by the solenoid valve switching.

[0032] In some alternative embodiments, the second multi-port pipe 400 further includes at least one detection pipe 450 extending vertically, the detection pipe 450 being disposed on the plate body 100, one end of the detection pipe 450 communicating with the main pipe 410, and the other end being used to connect to a detection element. Exemplarily, a TDS sensor or an NTC temperature sensor is inserted and fixed to the detection pipe 450 to monitor the filtered water quality or temperature in real time.

[0033] In some embodiments, the pure water outlet pipe 500 further includes a longitudinally extending third connecting pipe 540, which is disposed on the plate 100. One end of the third connecting pipe 540 is connected to and communicates with the return connecting pipe 530, and the other end is used to connect to the inlet end of the solenoid valve controlling the return switch. One end of the return pipe 430 is connected to and communicates with the main pipe 410, and the other end is used to connect to the outlet end of the solenoid valve controlling the return switch. By connecting the third connecting pipe 540 to the inlet end of the solenoid valve controlling the return flow and the return pipe 430 to the outlet end of the solenoid valve, the liquid flows out along the outlet end of the solenoid valve and then flows into the return pipe 430 of the multi-way pipe, forming a return path. During normal filtration, the solenoid valve can be closed to block the passage of the return pipe 430, avoiding interference with the normal filtration process, thereby using the solenoid valve to control the opening and closing of the return path. When filtration is stopped, the solenoid valve is opened to control the pure water to return to the front end of the RO membrane.

[0034] In some specific embodiments, the pure water outlet pipe 500 further includes a first heat dissipation connecting pipe 550 and a second heat dissipation connecting pipe 560 extending longitudinally. The second heat dissipation connecting pipe 560 is located below the first heat dissipation connecting pipe 550. One end of the first heat dissipation connecting pipe 550 is connected to the secondary filter outlet pipe 520, and the other end is used to connect to the inlet end of the water-cooled heat dissipation pipeline. One end of the second heat dissipation connecting pipe 560 is connected to the secondary filter outlet pipe 520, and the other end is used to connect to the outlet end of the water-cooled heat dissipation pipeline. Connecting the first heat dissipation connecting pipe 550 and the second heat dissipation connecting pipe 560 to the water-cooled heat dissipation pipeline forms a loop, allowing pure water to flow into the water-cooled heat dissipation pipeline along the first heat dissipation connecting pipe 550, and then flow back to the pure water outlet pipe 500 through the second heat dissipation connecting pipe 560. This allows heat exchange with other components through the water-cooled heat dissipation pipeline, thereby expanding the piping and functions of the water circuit board. Similarly, corresponding solenoid valves can be installed on the water-cooled heat dissipation pipeline to control the pipeline's on / off state and avoid interfering with normal filtration.

[0035] In some embodiments, the plate 100 is further provided with a concentrate inlet pipe 600, which includes a concentrate outlet pipe 610 extending vertically and a concentrate drain pipe 620 extending longitudinally. The concentrate outlet pipe 610 is connected to and communicates with the concentrate drain pipe 620. The concentrate inlet pipe 600 is located beside the secondary filtration outlet pipe 520, and the concentrate outlet pipe 610 is used to communicate with the discharge end of the second filter element. Thus, the concentrate discharged from the second filter element flows through the concentrate outlet pipe 610 into the concentrate drain pipe 620 and is then discharged.

[0036] Optionally, the water circuit board also includes a longitudinally extending extension pipe 700, which is disposed on the board body 100 and located between the concentrated water drain pipe 620 and the pure water drain pipe 510. The extension pipe 700, located on the board body 100, can be connected to additional filter cartridges, sensors, or other functional modules as needed, allowing the water circuit board to be further expanded to adapt to different water purification needs without the need for additional piping, thus broadening the applicability of the water circuit board. Alternatively, the entire water circuit board can be integrally injection molded.

[0037] This application also provides a water circuit board assembly, which includes: a first one-way valve, a second one-way valve, a first control valve, and a second control valve, and also includes the water circuit board as described above; the first one-way valve is disposed in the return pipe 430, and the second one-way valve is disposed in the secondary filter outlet pipe 520 and located between the first heat dissipation connecting pipe 550 and the second heat dissipation connecting pipe 560; the inlet and outlet of the first control valve are respectively connected to the first connecting pipe 330 and the second connecting pipe 440, and the inlet and outlet of the second control valve are respectively connected to the third connecting pipe 540 and the return pipe 430. The first one-way valve is used to prevent water in the main pipe 410 from flowing back to the return pipe 430; the second one-way valve prevents pure water from flowing back to the second filter element, ensuring unidirectional water flow.

[0038] In some embodiments, the water circuit board assembly further includes a booster pump and a water quality detection element. The inlet of the booster pump is connected to the secondary filter inlet pipe 420, and the booster pump pressurizes the water flow in the secondary filter inlet pipe 420 to improve the filtration efficiency. The water quality detection element is connected to the detection pipe 450 to provide feedback on water quality data.

[0039] This application also provides a water purifier, which includes the water circuit board or water circuit board assembly as described above. By integrating the water circuit board and its assembly, the raw water can directly output standard-compliant primary filtered water and pure water on the water circuit board after passing through processes such as primary filtration, secondary filtration, pressurization, and testing. The filtered concentrated water is discharged through other pipes on the water circuit board. With a suitable pipe layout, the water circuit board can be miniaturized, thereby providing conditions for the miniaturization of the water purifier.

[0040] Furthermore, certain terms in this specification have been used to describe embodiments of this specification. For example, "an embodiment," "an embodiment," and / or "some embodiments" mean that a particular feature, structure, or characteristic described in connection with that embodiment may be included in at least one embodiment of this specification. Therefore, it is to be emphasized and understood that two or more references to "an embodiment" or "an embodiment" in various parts of this specification do not necessarily refer to the same embodiment. Moreover, specific features, structures, or characteristics may be appropriately combined in one or more embodiments of this specification.

[0041] The preferred embodiments of this application have been described in detail above, but this application is not limited to the embodiments described. Without departing from the spirit and scope of this specification, those skilled in the art can make equivalent modifications or alternative configurations based on the embodiments in this specification to implement the application in this specification. These equivalent modifications or alternatives are all included within the scope defined by the claims of this application.

Claims

1. A water circuit board, characterized in that: include: Plate(100); The raw water inlet pipe (200) is set longitudinally on the plate (100) and is used to pass raw water into the first filter element; The first multi-port pipe (300) includes a primary filter inlet pipe (310) and a primary filter outlet pipe (340) extending longitudinally, and a primary filter supply pipe (320) extending vertically. The primary filter inlet pipe (310), the primary filter outlet pipe (340) and the primary filter supply pipe (320) are all installed on the plate (100) and are interconnected. The primary filter inlet pipe (310) and the primary filter outlet pipe (340) are arranged opposite to each other. The primary filter inlet pipe (310) is used to connect with the outlet end of the first filter element. The second multi-port pipe (400) includes a main pipe (410) extending laterally, a secondary filter inlet pipe (420) extending longitudinally, and a return pipe (430) extending longitudinally. The main pipe (410), the secondary filter inlet pipe (420), and the return pipe (430) are all installed on the plate (100) and are interconnected. The return pipe (430) is located on the side of the secondary filter inlet pipe (420) away from the primary filter inlet pipe (310). The main pipe (410) is connected to and communicates with the primary filter supply pipe (320). A pure water outlet pipe (500) includes a pure water drain pipe (510) extending longitudinally, a secondary filter outlet pipe (520) extending vertically, and a return connection pipe (530) extending laterally. The pure water drain pipe (510), the secondary filter outlet pipe (520), and the return connection pipe (530) are all installed on the plate (100) and are interconnected. The return connection pipe (530) is connected to the return pipe (430). The secondary filter outlet pipe (520) is used to connect to the outlet end of the second filter element. The inlet end of the raw water inlet pipe (200), the pure water drain pipe (510), and the primary filter outlet pipe (340) are all located on one side of the plate (100), while the outlet end of the raw water inlet pipe (200), the primary filter inlet pipe (310), the return pipe (430), and the secondary filter outlet pipe (520) are located on the other side of the plate (100).

2. The water channel plate according to claim 1, characterized in that: The first multi-port pipe (300) further includes a first connecting pipe (330) extending longitudinally, and the second multi-port pipe (400) further includes a second connecting pipe (440) extending longitudinally. The first connecting pipe (330) and the second connecting pipe (440) are both disposed on the plate (100). One end of the first connecting pipe (330) is connected to the primary filter inlet pipe (310), and the other end is used to connect to the inlet end of the solenoid valve that controls the switch of the primary filter supply pipe (320). One end of the second connecting pipe (440) is connected to the main pipe (410), and the other end is used to connect to the outlet end of the solenoid valve that controls the switch of the primary filter supply pipe (320).

3. The water channel plate according to claim 2, characterized in that: The second multi-port tube (400) also includes at least one detection tube (450) extending vertically, the detection tube (450) being disposed on the plate body (100), one end of the detection tube (450) being connected to the main tube (410), and the other end being used to connect to a detection element.

4. The water channel plate according to claim 3, characterized in that: The pure water outlet pipe (500) also includes a third connecting pipe (540) extending longitudinally. The third connecting pipe (540) is disposed on the plate (100). One end of the third connecting pipe (540) is connected to and communicates with the return connecting pipe (530), and the other end is used to connect to the water inlet end of the solenoid valve that controls the return switch. One end of the return pipe (430) is connected to and communicates with the main pipe (410), and the other end is used to connect to the water outlet end of the solenoid valve that controls the return switch.

5. The water channel plate according to claim 4, characterized in that: The pure water outlet pipe (500) also includes a first heat dissipation connecting pipe (550) and a second heat dissipation connecting pipe (560) extending longitudinally. The second heat dissipation connecting pipe (560) is located below the first heat dissipation connecting pipe (550). One end of the first heat dissipation connecting pipe (550) is connected to the secondary filter outlet pipe (520), and the other end is used to connect to the water inlet end of the water-cooled heat dissipation pipeline. One end of the second heat dissipation connecting pipe (560) is connected to the secondary filter outlet pipe (520), and the other end is used to connect to the water outlet end of the water-cooled heat dissipation pipeline.

6. The water channel plate according to claim 4, characterized in that: The plate (100) is also provided with a concentrate inlet pipe (600), which includes a concentrate outlet pipe (610) extending vertically and a concentrate drain pipe (620) extending longitudinally. The concentrate outlet pipe (610) is connected to and communicates with the concentrate drain pipe (620). The concentrate inlet pipe (600) is located beside the secondary filter outlet pipe (520), and the concentrate outlet pipe (610) is used to communicate with the discharge end of the second filter element.

7. The water channel plate according to claim 6, characterized in that: It also includes a longitudinally extending expansion tube (700), which is disposed on the plate (100) and located between the concentrate drain pipe (620) and the pure water drain pipe (510).

8. A water channel board assembly, characterized in that: include: The system comprises a first check valve, a second check valve, a first control valve, and a second control valve, and also includes the water circuit board as described in any one of claims 5-7; the first check valve is disposed in the return pipe (430), the second check valve is disposed in the secondary filter outlet pipe and located between the first heat dissipation connecting pipe and the second heat dissipation connecting pipe; the inlet and outlet of the first control valve are respectively connected to the first connecting pipe and the second connecting pipe, and the inlet and outlet of the second control valve are respectively connected to the third connecting pipe and the return pipe.

9. The water channel board assembly according to claim 8, characterized in that, It also includes a booster pump and a water quality detection element. The inlet end of the booster pump is connected to the secondary filter inlet pipe, the outlet end of the booster pump is connected to the inlet end of the second filter element, and the water quality detection element is connected to the detection pipe.

10. A water purifier, characterized in that: It includes the water channel board as described in any one of claims 1-7 or the water channel board assembly as described in any one of claims 8-9.

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