A water purifier

Abstract

A kind of pure drinking machine, including raw water tank, filter system, water storage container, heating module and refrigeration module, and the water outlet end of raw water tank is connected with the water inlet end of filter system.The filter system includes waterway board, integrated filter core module and reverse osmosis filter module, integrated filter core module is arranged in the same housing with prefilter unit and postfilter unit, and is equipped with multiple water guide ports;Waterway board is equipped with first integrated interface connected with the water guide port, and first integrated interface includes first water inlet, first water outlet, second water inlet and second water outlet respectively connected with raw water tank, prefilter unit, reverse osmosis filter module, postfilter unit and water storage container.This design realizes "pre-filtering→RO membrane→post-filtering" multi-waterway integrated docking, without a large number of external pipelines, solves the problem of existing pure drinking machine layout dispersion, bulky, improves integration and compactness, reduces leakage risk, adapts to compact space use, water storage container outlet supplies heating or refrigeration, convenient to use.

Description

Technical Field

[0001] This utility model relates to the field of drinking water treatment equipment technology, specifically to a highly integrated water purifier for miniaturization. Background Technology

[0002] A water purifier is a drinking water device that integrates water purification, heating / cooling, and instant drinking water dispensing functions. Its core lies in the filtration system's ability and efficiency in treating raw water. The filtration system typically includes a pre-filtration unit, a reverse osmosis (RO) membrane module, and a post-filtration unit, achieving the purification process from raw water to drinking water through multi-stage filtration.

[0003] In existing water purifier products, the filtration system mostly adopts a combination of independent filter cartridges and complex external piping. The functional modules are scattered and lack coordinated design, resulting in a loose internal structure, large size, complex assembly, and potential leakage risks. This makes it difficult to meet current users' demands for smaller, more integrated, and aesthetically pleasing water purifiers, especially limiting their application in compact spaces such as home kitchen countertops and office break rooms.

[0004] Although the industry has introduced composite filter designs that integrate pre- and post-filter elements, such as the Chinese utility model patent "An Integrated Composite Pre- and Post-Filter Element" (application number 201922151602.8, authorization announcement number CN211752964U), which reduces the size of the filter element itself to some extent, its interface compatibility with other core components such as the water circuit board is insufficient. The water circuit board still generally uses the traditional "one inlet, one outlet" interface, which cannot directly adapt to the multi-channel circulation requirements of the integrated filter element. It still relies on a large number of external pipes for connection, resulting in an unreasonable layout between the various components of the whole machine, and failing to achieve a compact overall structure and effective size reduction.

[0005] Therefore, existing water purifiers still have significant shortcomings in terms of overall layout, integration, and miniaturization. There is an urgent need for a highly integrated water purifier that can optimize the layout of the filtration system, water circuit board, and other components of the machine to achieve a compact multi-channel water circulation of "pre-filtration → RO membrane → post-filtration" and significantly reduce the overall size of the machine. Summary of the Invention

[0006] The technical problem to be solved by this utility model is to provide a water purifier with a compact structure and small size by optimizing the design of the water circuit board and integrated filter element and coordinating the overall layout of other components, in order to address the above-mentioned technical status. The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: a water purifier, including a raw water tank, a filtration system, a water storage container, a heating module and a cooling module, wherein the water outlet of the raw water tank is connected to the water inlet of the filtration system, and the filtration system includes a water circuit board, an integrated filter module and a reverse osmosis filtration module. The integrated filter module includes a pre-filter unit and a post-filter unit housed in the same housing, and has multiple water inlets communicating with the inlet and outlet ends of the pre-filter unit and the post-filter unit. The water circuit board has a first integrated interface connected to the multiple water inlets of the integrated filter module, the first integrated interface including... The first water inlet is connected to the outlet of the raw water tank and also to the inlet of the pre-filter unit. The first outlet is connected to the outlet of the pre-filter unit and the inlet of the reverse osmosis filter module. The second water inlet is connected to the inlet of the post-filtration unit and also to the pure water end of the reverse osmosis filtration module; and The second water outlet is connected to the water outlet of the post-filter unit and to the water inlet of the water storage container. The water outlet of the water storage container is connected to the heating module and the cooling module respectively, and water is discharged through the corresponding hot water outlet and cold water outlet.

[0007] To achieve a compact, three-dimensional arrangement of all components, reduce the overall size of the machine, and improve ease of use, the machine preferably includes a receiving space formed by a shell, a front cover, and a base. The refrigeration module includes an ice tank and a mainboard of the refrigeration unit that are electrically connected and work together to achieve synergistic refrigeration. The rear end of the shell has a stepped structure that supports the raw water tank. The upper part of the front cover extends towards the front end to form a protrusion. The water storage container is located on the base and is situated in front of the front cover and below the protrusion. The hot water outlet and cold water outlet are located at the bottom of the protrusion. The filtration system, heating module, and mainboard of the refrigeration unit are integrated within the receiving space and located between the raw water tank and the water storage container. The ice tank is built into the receiving space below the raw water tank.

[0008] To achieve a neat layout of the integrated filter module and the reverse osmosis filtration module, simplify the connection structure, and improve water flow efficiency, preferably, the water circuit board is also provided with a second integrated interface for connecting the reverse osmosis filtration module. The integrated filter module and the reverse osmosis filtration module are arranged side by side on the water circuit board through the first integrated interface and the second integrated interface, and are spaced apart in the left-right direction. The second integrated interface includes an RO membrane inlet, an RO membrane pure water outlet, and an RO membrane wastewater outlet that are connected to the reverse osmosis filtration module. The first outlet is connected to the RO membrane inlet, and the RO membrane pure water outlet is connected to the second inlet.

[0009] To improve the structural stability of the filter module, achieve efficient space reuse, and facilitate the miniaturization of the entire unit, the filter system preferably includes a main support mounted on the base. The main support has a housing for accommodating the integrated filter module and the reverse osmosis filter module, respectively. The bottom of the main support extends downward to support the legs on the base. The water circuit board is disposed at the bottom of the main support, and an installation space for installing functional components is formed between the water circuit board and the base.

[0010] To ensure purification efficiency and optimize layout compactness and connection reliability, preferably, a self-priming pump and a water pump are also included. The self-priming pump is connected in series between the outlet of the raw water tank and the first inlet of the first integrated interface, and is used to draw water from the raw water tank to the pre-filtration unit. The water pump is connected in series between the first outlet of the first integrated interface and the inlet of the reverse osmosis filtration module, and is used to provide the pressure required for filtration to the reverse osmosis filtration module. Both the self-priming pump and the water pump are located in the installation space between the water circuit board and the base, and are respectively connected to the corresponding interfaces on the water circuit board through pipes.

[0011] To achieve independent connectivity of multiple water channels within the integrated filter module, reduce the filter volume, and ensure stable water flow, preferably, there are four water inlets, all located at the bottom of the integrated filter module. The integrated filter module also includes an interface base connected to the bottom of the outer shell. The interface base forms a central tubular channel and three annular channels, namely the first annular channel, the second annular channel, and the third annular channel. The three annular channels are arranged sequentially from the inside out, surrounding the outside of the central tubular channel. The central tubular channel and each annular channel are independently connected to the inside of the outer shell. The central tubular channel, the first annular channel, the second annular channel, and the third annular channel are respectively connected to the four water inlets at the bottom of the integrated filter module.

[0012] To optimize the space occupied by the integrated filter module, ensure accurate filtration sequence, and improve purification effect, preferably, the post-filter unit is located below the pre-filter unit and forms a vertical arrangement structure; in the interface base, the outermost third annular flow channel is connected to the water inlet of the pre-filter unit through a corresponding water guide, and the central tubular channel is connected to the water outlet of the pre-filter unit through a corresponding water guide; in the interface base, the second layer of second annular flow channels from the outside to the inside is connected to the water inlet of the post-filter unit through a corresponding water guide, and the third layer of first annular flow channels from the outside to the inside is connected to the water outlet of the post-filter unit through a corresponding water guide.

[0013] To facilitate processing, manufacturing, and assembly, and to improve the ease of connection and sealing with the water circuit board interface, preferably, the interface base includes a connecting sleeve, a first interface seat, and a second interface seat connected to the bottom of the first interface seat. Both the first and second interface seats are built into the connecting sleeve. The central tubular channel, the first annular flow channel, the second annular flow channel, and the third annular flow channel are disposed on the first interface seat. The bottom of the second interface seat has four insertion pipes, which are respectively connected to the central tubular channel, the first annular flow channel, the second annular flow channel, and the third annular flow channel. The bottom opening of the insertion pipes constitutes the four water inlets.

[0014] To achieve rapid water circuit connection and structural fixation simultaneously, improving assembly efficiency and connection stability, preferably, the water circuit board includes a water circuit board body. The first integrated interface further includes four first tubular connecting parts protruding from the upper and lower end faces of the water circuit board body and distributed adjacently, and a first annular connecting wall protruding from the upper end face of the water circuit board body for positioning and connecting the integrated filter module. The upper opening of each first tubular connecting part on the upper end face of the water circuit board body is used for the insertion and connection of the insertion pipe at the bottom of the integrated filter module, and is located inside the first annular connecting wall. The side walls of each first tubular connecting part on the lower end face of the water circuit board body are respectively connected to first connecting pipes, and each first tubular connecting part and the corresponding first connecting pipe are interconnected. The openings of the four first connecting pipes away from the first tubular connecting parts respectively form the first inlet, the first outlet, the second inlet, and the second outlet. The inner side wall of the first annular connecting wall is provided with a first slot, and the outer side wall of the connecting sleeve is provided with a first locking block adapted to the first slot.

[0015] To achieve uniform compatibility of the water circuit board with the dual filtration modules, ensuring a neat layout and convenient installation, preferably, the second integrated interface includes three second tubular connecting parts protruding from the upper and lower end faces of the water circuit board body and distributed adjacently, and a second annular connecting wall protruding from the upper end face of the water circuit board body for positioning and connecting the reverse osmosis filtration module; the upper opening of each second tubular connecting part on the upper end face of the water circuit board body is used to connect to the corresponding interface of the reverse osmosis filtration module and is located on the inner side of the second annular connecting wall; the side walls of each second tubular connecting part on the lower end face of the water circuit board body are respectively connected to second connecting pipes, and each second tubular connecting part and the corresponding second connecting pipe are interconnected, and the openings of the three second connecting pipes away from the second tubular connecting parts respectively form the RO membrane inlet, RO membrane pure water outlet and RO membrane wastewater outlet; the inner side wall of the second annular connecting wall is provided with a second slot for engaging the reverse osmosis filtration module.

[0016] Compared with the prior art, the advantages of this utility model are as follows: By setting an integrated filter module, a reverse osmosis filter module, and a matching water circuit board in the filtration system, and integrating the pre-filtration unit and the post-filtration unit into the same housing to form an integrated filter module, and correspondingly setting a first integrated interface with a first inlet, a first outlet, a second inlet, and a second outlet on the water circuit board, the water from the raw water tank is connected to the pre-filtration unit through the first inlet, the water from the pre-filtration unit is connected to the reverse osmosis filter module through the first outlet, and the pure water from the reverse osmosis filter module is connected to the reverse osmosis filter module through the second inlet. The water enters the post-filtration unit, and the water from the post-filtration unit is then connected to the storage container through a second outlet. Because it achieves integrated connection of multiple water paths from "pre-filtration → RO membrane → post-filtration", it eliminates the need to rely on a large number of external pipes to connect each filtration unit. This effectively solves the problem of the scattered layout and complex piping of existing water purifier filtration systems, and significantly improves the integration of the whole machine. At the same time, this integrated design greatly reduces the space occupied by the filtration system, laying the foundation for the compact structure and small size of the whole machine, making it more suitable for the use of compact spaces such as home kitchen countertops and office tea rooms. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of this embodiment; Figure 2 This is a schematic diagram of the three-dimensional structure after the outer shell is removed in this embodiment; Figure 3 This embodiment presents a schematic diagram of the decomposed state structure. Figure 4 This is a three-dimensional structural diagram of the filtration system from the bottom view in this embodiment; Figure 5 This is a schematic diagram of the decomposed state structure of the filtration system in this embodiment; Figure 6 This is a three-dimensional structural diagram of the interface base in this embodiment; Figure 7 This is a schematic diagram of the exploded state structure of the interface base in this embodiment; Figure 8 This is a three-dimensional structural diagram of the water channel plate from the top view in this embodiment; Figure 9 This is a three-dimensional structural diagram of the water channel plate from the bottom view in this embodiment; Figure 10 This is a cross-sectional view of the integrated filter module in this embodiment. Figure 11 This is a cross-sectional view of the integrated filter module in this embodiment. Detailed Implementation

[0018] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0019] Figures 1-11 The figure shown is the preferred embodiment of this utility model.

[0020] The water purifier in this embodiment includes a raw water tank 1, a filtration system 2, a water storage container 3, a heating module 4, a cooling module 5, a housing 6, a front cover 7, a base 8, a self-priming pump 9, and a water pump 10. It aims to solve the problems of existing products' filtration systems, which often use independent filter cartridges combined with complex external piping, resulting in scattered functional modules, low integration, and insufficient coordination between the water circuit board and the integrated filter cartridge interface. This leads to a large overall size, complex assembly, and potential leakage risks, making it difficult to adapt to compact spaces. Through the integrated filter cartridge module design, dual integrated interface adaptation, and a well-organized layout of all components, it achieves a high degree of integration of multiple water circulation paths from "pre-filtration → RO membrane → post-filtration," meeting the needs of miniaturized use. The specific structure and connection relationship of each component are as follows: Overall frame and component layout: Reference Figure 1 , Figure 2 and Figure 3 As shown, the rear end of the shell 6 has a stepped structure 6a to support the raw water tank 1; the upper part of the front cover 7 extends towards the front end to form a protrusion 7a, and the water storage container 3 is located on the base 8 and in front of the front cover 7 and below the protrusion 7a. The refrigeration module 5 includes an ice tank 5a and a refrigeration main board 5b that are electrically connected. The filtration system 2, the heating module 4 and the refrigeration main board 5b are integrated in the receiving space and located between the raw water tank 1 and the water storage container 3; the ice tank 5a is built into the receiving space below the raw water tank 1.

[0021] Filtration System 2: Reference Figure 4 and Figure 5 As shown, the filtration system 2 includes a water channel plate 2a, an integrated filter module 2b, a reverse osmosis filter module 2c, and a main support 2d. The main support 2d is mounted on the base 8, and has housings 2d1 formed on it to accommodate the integrated filter module 2b and the reverse osmosis filter module 2c respectively. Support legs 2d2 extend downwards from the bottom and support the base 8. The water channel plate 2a is located at the bottom of the main support 2d, and an installation space for mounting functional components is formed between the water channel plate 2a and the base 8.

[0022] refer to Figure 10 and Figure 11 As shown, the integrated filter module 2b includes a pre-filter unit 2b2 and a post-filter unit 2b3 disposed within the same housing 2b1, and an interface base 2b5 connected to the bottom of the housing 2b1. The bottom of the integrated filter module 2b has four water inlets 2b4. The post-filter unit 2b3 is located below the pre-filter unit 2b2, forming a vertically arranged structure.

[0023] refer to Figure 6 , Figure 7As shown, the interface base 2b5 includes a connecting sleeve 2b5e, a first interface seat 2b5f, and a second interface seat 2b5g that is abutted below the first interface seat 2b5f. Both the first interface seat 2b5f and the second interface seat 2b5g are built into the connecting sleeve 2b5e. The first interface seat 2b5f has a central tubular channel 2b5a and three annular channels, namely the first annular channel 2b5b, the second annular channel 2b5c, and the third annular channel 2b5d. The three annular channels are arranged from the inside out as the first annular channel 2b5b, the second annular channel 2b5c, and the third annular channel 2b5d, and are arranged sequentially around the outside of the central tubular channel 2b5a. The central tubular channel 2b5a and the three annular channels are independently connected to the inside of the outer shell 2b1.

[0024] The bottom of the second interface base 2b5g has four insertion pipes 2b5h, which are respectively connected to the central tubular channel 2b5a, the first annular flow channel 2b5b, the second annular flow channel 2b5c, and the third annular flow channel 2b5d. The bottom openings of the insertion pipes 2b5h form four water inlets 2b4. In the interface base 2b5, the outermost third annular flow channel 2b5d is connected to the inlet of the pre-filter unit 2b2 through the corresponding water inlet 2b4, and the central tubular channel 2b5a is connected to the outlet of the pre-filter unit 2b2 through the corresponding water inlet 2b4. The second layer second annular flow channel 2b5c, from the outside to the inside, is connected to the inlet of the post-filter unit 2b3 through the corresponding water inlet 2b4, and the third layer first annular flow channel 2b5b, from the outside to the inside, is connected to the outlet of the post-filter unit 2b3 through the corresponding water inlet 2b4.

[0025] refer to Figure 8 , Figure 9As shown, the water circuit board 2a includes a water circuit board body 2a3, on which a first integrated interface 2a1 and a second integrated interface 2a2 are provided. The first integrated interface 2a1 includes a first inlet 2a1a, a first outlet 2a1b, a second inlet 2a1c, a second outlet 2a1d, four first tubular connecting parts 2a1e protruding from the upper and lower end faces of the water circuit board body 2a3 and distributed adjacently, and a first annular connecting wall 2a1f protruding from the upper end face of the water circuit board body 2a3. The upper openings of each first tubular connecting part 2a1e located on the upper surface of the water circuit board body 2a3 are used for the insertion and connection of the insertion pipe 2b5h at the bottom of the integrated filter module 2b, and this part is located inside the first annular connecting wall 2a1f; the side walls of each first tubular connecting part 2a1e on the lower surface are respectively connected to first connecting pipes 2a1g, and the two are interconnected. The openings of the four first connecting pipes 2a1g away from the first tubular connecting part 2a1e respectively form a first inlet 2a1a, a first outlet 2a1b, a second inlet 2a1c, and a second outlet 2a1d. The inner side wall of the first annular connecting wall 2a1f is provided with a first slot 2a1f1, and the outer side wall of the connecting sleeve 2b5e is provided with a first locking block 2b5e1 adapted to the first slot 2a1f1.

[0026] The second integrated interface 2a2 includes an RO membrane inlet 2a2a, an RO membrane pure water outlet 2a2b, an RO membrane wastewater outlet 2a2c, three second tubular connecting parts 2a2d protruding from the upper and lower end faces of the water circuit board body 2a3 and distributed adjacently, and a second annular connecting wall 2a2e protruding from the upper end face of the water circuit board body 2a3. The upper opening of each second tubular connecting part 2a2d on the upper end face of the water circuit board body 2a3 is used to connect to the corresponding interface of the reverse osmosis filter module 2c, and this part is located inside the second annular connecting wall 2a2e; the side walls of each second tubular connecting part 2a2d on the lower end face are respectively connected to second connecting pipes 2a2f, and the two are interconnected. The openings of the three second connecting pipes 2a2f away from the second tubular connecting parts 2a2d respectively form the RO membrane inlet 2a2a, the RO membrane pure water outlet 2a2b, and the RO membrane wastewater outlet 2a2c. The inner side wall of the second annular connecting wall 2a2e is provided with a second slot 2a2e1 for snapping into the reverse osmosis filter module 2c.

[0027] The reverse osmosis filtration module is connected to the water circuit board 2a through the second integrated interface 2a2. The integrated filter module 2b and the reverse osmosis filtration module 2c are arranged side by side through the first integrated interface 2a1 and the second integrated interface 2a2, and are distributed at intervals along the left and right directions. The first outlet 2a1b is connected to the RO membrane inlet 2a2a, and the RO membrane pure water outlet 2a2b is connected to the second inlet 2a1c.

[0028] Power module: The self-priming pump 9 and the water pump 10 are both located in the installation space between the water circuit board 2a and the base 8, and are connected to the corresponding interfaces on the water circuit board 2a through pipelines. The self-priming pump 9 is connected in series between the outlet end of the raw water tank 1 and the first inlet 2a1a of the first integrated interface 2a1; the water pump 10 is connected in series between the first outlet 2a1b of the first integrated interface 2a1 and the inlet end of the reverse osmosis filter module 2c. The working principle of the water purifier in this embodiment is explained as follows. 1. Pre-filtration stage: After the water purifier is started, the self-priming pump 9 begins to work, drawing raw water from the raw water tank 1 to the first inlet 2a1a of the first integrated interface 2a1. The water flows through the first connecting pipe 2a1g into the first tubular connection part 2a1e, and then through the insertion pipe 2b5h corresponding to the third annular flow channel 2b5d at the bottom of the integrated filter module 2b, into the third annular flow channel 2b5d of the interface base 2b5, and finally into the pre-filtration unit 2b2. The pre-filtration unit 2b2 performs preliminary filtration of large particulate impurities in the raw water. The filtered water flows back to the first tubular connection part 2a1e through the central tubular channel 2b5a and the corresponding insertion pipe 2b5h, and then flows out from the first outlet 2a1b through the first connecting pipe 2a1g. Please refer to the specific water circuit diagram of the pre-filtration stage. Figure 10 The arrow shown.

[0029] 2. Reverse Osmosis Fine Filtration Stage: Pump 10 pressurizes the pre-filtered water flowing from the first outlet 2a1b, and through the RO membrane inlet 2a2a and the second connecting pipe 2a2f, it enters the second tubular connection part 2a2d, and then flows into the reverse osmosis filtration module 2c. Under high pressure, harmful substances in the water flow are intercepted, and the resulting pure water flows out through the RO membrane pure water outlet 2a2b, while wastewater is discharged from the system through the RO membrane wastewater outlet 2a2c.

[0030] 3. Post-filtration and water storage stage: Pure water flowing from the RO membrane pure water outlet 2a2b enters the first connecting pipe 2a1g through the second connecting pipe 2a2f and the second inlet 2a1c, then flows through the first tubular connecting part 2a1e and the insertion pipe 2b5h corresponding to the second annular flow channel 2b5c into the second annular flow channel 2b5c of the interface base 2b5, and then enters the post-filtration unit 2b3. After the post-filtration unit 2b3 improves the taste of the water, the water flows back to the first tubular connecting part 2a1e through the first annular flow channel 2b5b and the corresponding insertion pipe 2b5h, and then flows through the first connecting pipe 2a1g from the second outlet 2a1d into the water storage container 3 for storage. Please refer to the specific water circuit diagram of the post-filtration stage. Figure 11 The arrow shown.

[0031] 4. Heating / Cooling and Water Dispensing Stage: When a user needs hot water, the purified water in the water storage container 3 flows into the heating module 4 for heating, and then flows out through the hot water outlet at the bottom of the protrusion 7a; when a user needs cold water, the purified water flows into the cooling module 5, and the ice tank 5a cools the water flow under the control of the main board 5b of the cooler, and then flows out through the cold water outlet, so that the water can be drunk immediately.

[0032] Throughout the assembly and operation process, the integrated filter module 2b is fixed by the first locking block 2b5e1 of the connecting sleeve 2b5e and the first locking groove 2a1f1 of the first annular connecting wall 2a1f. The reverse osmosis filter module 2c is positioned and locked by the second locking groove 2a2e1 of the second annular connecting wall 2a2e, ensuring a stable assembly. The self-priming pump and the water pump are integrated in the installation space between the water circuit board 2a and the base 8. Each module is connected to the water circuit through the integrated interface of the water circuit board, replacing the traditional complex external piping, which greatly improves the integration and compactness of the whole machine. It should be noted that in the description of this embodiment, the terms "front," "rear," "left," "right," "up," "down," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings. They are merely for the convenience of describing this utility model 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 utility model. The terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

Claims

1. A water purifier, comprising a raw water tank (1), a filtration system (2), a water storage container (3), a heating module (4), and a cooling module (5), wherein the outlet of the raw water tank (1) is connected to the inlet of the filtration system (2), characterized in that: The filtration system (2) includes a water circuit board (2a), an integrated filter module (2b), and a reverse osmosis filtration module (2c); The integrated filter module (2b) includes a pre-filter unit (2b2) ​​and a post-filter unit (2b3) disposed within the same housing (2b1), and is provided with multiple water inlets (2b4) communicating with the inlet and outlet ends of the pre-filter unit (2b2) ​​and the post-filter unit (2b3). The water circuit board (2a) is provided with a first integrated interface (2a1) connected to the multiple water inlets (2b4) of the integrated filter module (2b), the first integrated interface (2a1) including... The first water inlet (2a1a) is connected to the outlet of the raw water tank (1) and to the inlet of the pre-filter unit (2b2); The first outlet (2a1b) is connected to the outlet of the pre-filter unit (2b2) ​​and to the inlet of the reverse osmosis filter module (2c). The second inlet (2a1c) is connected to the inlet of the post-filtration unit (2b3) and to the pure water end of the reverse osmosis filtration module (2c); and The second outlet (2a1d) is connected to the outlet of the post-filter unit (2b3) and to the inlet of the water storage container (3); The water outlet of the water storage container (3) is connected to the heating module (4) and the cooling module (5) respectively, and water is discharged through the corresponding hot water outlet and cold water outlet.

2. The water purifier according to claim 1, characterized in that: It also includes a receiving space formed by the shell (6), the front cover (7) and the base (8). The refrigeration module (5) includes an ice tank (5a) and a refrigeration main board (5b) that are electrically connected and achieve synergistic refrigeration. The rear end of the shell (6) is provided with a stepped structure (6a) that supports the raw water tank (1). The upper part of the front cover (7) extends to the front end to form a protrusion (7a). The water storage container (3) is located on the base (8) and in front of the front cover (7) and below the protrusion (7a). The hot water outlet and the cold water outlet are located at the bottom of the protrusion (7a). The filtration system (2), the heating module (4) and the refrigeration main board (5b) are integrated in the receiving space and located between the raw water tank (1) and the water storage container (3). The ice tank (5a) is built into the receiving space below the raw water tank (1).

3. The water purifier according to claim 1, characterized in that: The water circuit board (2a) is also provided with a second integrated interface (2a2) for connecting the reverse osmosis filter module (2c). The integrated filter module (2b) and the reverse osmosis filter module (2c) are arranged side by side through the first integrated interface (2a1) and the second integrated interface (2a2) on the water circuit board (2a), and are distributed at intervals along the left and right directions. The second integrated interface (2a2) includes an RO membrane inlet (2a2a), an RO membrane pure water outlet (2a2b), and an RO membrane wastewater outlet (2a2c) connected to the reverse osmosis filtration module (2c). The first outlet (2a1b) is connected to the RO membrane inlet (2a2a), and the RO membrane pure water outlet (2a2b) is connected to the second inlet (2a1c).

4. The water purifier according to claim 2, characterized in that: The filtration system (2) further includes a main support (2d) mounted on the base (8). The main support (2d) has a housing (2d1) for accommodating the integrated filter module (2b) and the reverse osmosis filter module (2c) respectively. The bottom of the main support (2d) extends downward to support the base (8) with a foot (2d2). The water channel plate (2a) is disposed at the bottom of the main support (2d), and an installation space for installing functional components is formed between the water channel plate (2a) and the base (8).

5. The water purifier according to claim 4, characterized in that: It also includes a self-priming pump (9) and a water pump (10). The self-priming pump (9) is connected in series between the outlet of the raw water tank (1) and the first inlet (2a1a) of the first integrated interface (2a1) to draw water from the raw water tank (1) to the pre-filter unit (2b2). The water pump (10) is connected in series between the first outlet (2a1b) of the first integrated interface (2a1) and the inlet of the reverse osmosis filter module (2c) to provide the pressure required for filtration of the reverse osmosis filter module (2c). The self-priming pump (9) and the water pump (10) are both located in the installation space between the water circuit board (2a) and the base (8), and are respectively connected to the corresponding interface on the water circuit board (2a) through pipelines.

6. The water purifier according to claim 3, characterized in that: There are four water inlets (2b4), all located at the bottom of the integrated filter module (2b). The integrated filter module (2b) also includes an interface base (2b5) connected to the bottom of the outer shell (2b1). The interface base (2b5) has a central tubular channel (2b5a) and three annular channels, namely the first annular channel (2b5b), the second annular channel (2b5c), and the third annular channel (2b5d). The three annular channels are arranged from the inside out as follows: the first annular channel (2b5a), the second annular channel (2b5c), and the third annular channel (2b5d). 5b) The second annular flow channel (2b5c) and the third annular flow channel (2b5d) are arranged sequentially around the outside of the central tubular channel (2b5a). The central tubular channel (2b5a) and each annular flow channel are independently connected to the inside of the outer shell (2b1). The central tubular channel (2b5a), the first annular flow channel (2b5b), the second annular flow channel (2b5c), and the third annular flow channel (2b5d) are respectively connected to the four water inlets (2b4) at the bottom of the integrated filter module (2b).

7. The water purifier according to claim 6, characterized in that: The post-filter unit (2b3) is located below the pre-filter unit (2b2) ​​and forms a vertically arranged structure; In the interface base (2b5), the outermost third annular flow channel (2b5d) is connected to the inlet end of the pre-filter unit (2b2) ​​through the corresponding water guide (2b4), and the central tubular channel (2b5a) is connected to the outlet end of the pre-filter unit (2b2) ​​through the corresponding water guide (2b4). In the interface base (2b5), the second annular flow channel (2b5c) from the outside to the inside is connected to the water inlet of the post-filter unit (2b3) through the corresponding water guide (2b4), and the first annular flow channel (2b5b) from the outside to the inside is connected to the water outlet of the post-filter unit (2b3) through the corresponding water guide (2b4).

8. The water purifier according to claim 6, characterized in that: The interface base (2b5) includes a connecting sleeve (2b5e), a first interface seat (2b5f), and a second interface seat (2b5g) mating below the first interface seat (2b5f). Both the first interface seat (2b5f) and the second interface seat (2b5g) are built into the connecting sleeve (2b5e). The central tubular channel (2b5a), the first annular flow channel (2b5b), the second annular flow channel (2b5c), and the third annular flow channel (2b5d) are disposed on the first interface seat (2b5f). The bottom of the second interface seat (2b5g) has four insertion pipes (2b5h), which are respectively connected to the central tubular channel (2b5a), the first annular flow channel (2b5b), the second annular flow channel (2b5c), and the third annular flow channel (2b5d). The bottom opening of the insertion pipe (2b5h) constitutes the four water inlets (2b4).

9. The water purifier according to claim 8, characterized in that: The water circuit board (2a) includes a water circuit board body (2a3), and the first integrated interface (2a1) further includes four first tubular connecting parts (2a1e) protruding from the upper and lower end faces of the water circuit board body (2a3) and distributed adjacently, and a first annular connecting wall (2a1f) protruding from the upper end face of the water circuit board body (2a3) for positioning and connecting the integrated filter module (2b); The upper openings of each first tubular connecting part (2a1e) located on the upper end face of the water circuit board body (2a3) are used for the insertion pipe (2b5h) at the bottom of the integrated filter module (2b) to be inserted and connected, and are located inside the first annular connecting wall (2a1f); Each first tubular connecting part (2a1e) located on the lower end face of the water circuit board body (2a3) is connected to a first connecting pipe (2a1g) on ​​its side wall, and each first tubular connecting part (2a1e) and the corresponding first connecting pipe (2a1g) are interconnected. The openings of the four first connecting pipes (2a1g) away from the first tubular connecting part (2a1e) respectively form the first water inlet (2a1a), the first water outlet (2a1b), the second water inlet (2a1c) and the second water outlet (2a1d). The inner sidewall of the first annular connecting wall (2a1f) is provided with a first slot (2a1f1), and the outer sidewall of the connecting sleeve (2b5e) is provided with a first block (2b5e1) adapted to the first slot (2a1f1).

10. The water purifier according to claim 9, characterized in that: The second integrated interface (2a2) includes three second tubular connecting parts (2a2d) protruding from the upper and lower end faces of the water circuit board body (2a3) and distributed adjacently, and a second annular connecting wall (2a2e) protruding from the upper end face of the water circuit board body (2a3) for positioning and connecting the reverse osmosis filter module (2c); The upper openings of each of the second tubular connecting parts (2a2d) located on the upper end face of the water circuit board body (2a3) are used to connect to the corresponding interface of the reverse osmosis filter module (2c), and are located on the inner side of the second annular connecting wall (2a2e). Each second tubular connection part (2a2d) located on the lower end face of the water circuit board body (2a3) is connected to a second connecting pipe (2a2f) on its side wall, and each second tubular connection part (2a2d) and the corresponding second connecting pipe (2a2f) are interconnected. The openings of the three second connecting pipes (2a2f) away from the second tubular connection parts (2a2d) respectively form the RO membrane inlet (2a2a), RO membrane pure water outlet (2a2b) and RO membrane wastewater outlet (2a2c). The inner sidewall of the second annular connecting wall (2a2e) is provided with a second slot (2a2e1) for engaging the reverse osmosis filter module (2c).

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