A water purification device

Abstract

The technical solution of the present invention discloses a water purification device, which includes a raw water tank, a pure water tank, a reverse osmosis filter element, and a water purification water circuit board. A water purification water circuit channel, a pure water circuit channel, and a wastewater circuit channel that are connected to the reverse osmosis filter element are formed inside the water purification water circuit board. The reverse osmosis filter element is connected to the raw water tank through the water purification water circuit channel; the reverse osmosis filter element is connected to the pure water tank through the pure water circuit channel; the reverse osmosis filter element returns the wastewater to the raw water tank through the wastewater circuit channel. The technical solution of the present invention proposes a water purification device. The reverse osmosis filter element is respectively connected to the raw water tank and the pure water tank through the water purification water circuit board. The reverse osmosis filter element can be connected to the raw water tank and the pure water tank without being connected through pipelines, thereby realizing the intake of raw water, the output of pure water, and the return of wastewater. The pipeline connection between various components inside the water purification device is simplified, the complexity of product connection is reduced, and the reliability of the product is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of water purification equipment, and particularly relates to a water purification equipment. Background Art

[0002] With the development of the desktop water dispenser industry, small and multifunctional desktop machines are more popular among people. They have a small volume and occupy less space. By carrying the usage functions of basic scenarios, they can meet the needs of different people. However, due to volume limitations, existing desktop machines generally have relatively single functions. Most are simple single-heat type water dispensers without other expansion functions. Some products also have some compatible expansion functions, but they are relatively simple experience interaction functions such as wifi and display.

[0003] Currently, there are also some high-end, complex and multifunctional desktop machines in the industry, but they have numerous internal components and intricate pipelines, with low manufacturability and high failure risks. Summary of the Invention

[0004] The main object of the present invention is to propose a water purification equipment, aiming to reduce the internal pipeline connection of the water purification equipment.

[0005] The technical solution of the present invention proposes a water purification equipment, including:

[0006] A raw water tank;

[0007] A pure water tank;

[0008] A reverse osmosis filter element;

[0009] A water purification water circuit board, inside which there are formed a water purification water circuit channel, a pure water circuit channel and a waste water circuit channel communicating with the reverse osmosis filter element.

[0010] The reverse osmosis filter element is communicated with the raw water tank through the water purification water circuit channel;

[0011] The reverse osmosis filter element is communicated with the pure water tank through the pure water circuit channel;

[0012] The reverse osmosis filter element returns the waste water to the raw water tank through the waste water circuit channel.

[0013] In an embodiment, the water purification equipment further includes a pre-filter element; an inlet water circuit channel is further formed inside the water purification water circuit board. The inlet water circuit channel is arranged on the flow path between the raw water tank and the water purification water circuit channel and is communicated with the water purification water circuit channel through the pre-filter element.

[0014] In one embodiment, the water purification device further includes a post-filter; an outlet water channel is further formed inside the water purification water circuit board, and the outlet water channel is arranged on the flow path between the pure water tank and the pure water water channel, and is communicated with the pure water water channel through the post-filter.

[0015] In one embodiment, the pure water water channel includes a first pure water water channel and a second pure water water channel that are mutually blocked. The first pure water water channel is communicated with the reverse osmosis filter, and the second pure water water channel is communicated with the post-filter;

[0016] The water purification device further includes a first one-way valve, which is arranged on the water purification water circuit board and communicates the first pure water water channel and the second pure water water channel. The flow direction of the first one-way valve is from the first pure water water channel to the second pure water water channel.

[0017] In one embodiment, a waste water return channel is further formed inside the water purification water circuit board, and the waste water return channel is arranged on the flow path between the waste water channel and the raw water tank; the water purification device further includes a waste water valve, which is arranged on the water purification water circuit board and communicates the waste water water channel and the waste water return channel.

[0018] In one embodiment, the water purification device further includes a second one-way valve, which is arranged on the water purification water circuit board and communicates the outlet water channel and the waste water return channel. The flow direction of the second one-way valve is from the outlet water channel to the waste water return channel.

[0019] In one embodiment, the waste water return channel includes a first waste water return channel and a second waste water return channel that are mutually blocked. The first waste water return channel is communicated with the waste water water channel through the waste water valve, and the second waste water return channel is communicated with the outlet channel through the second one-way valve;

[0020] The water purification device further includes a first switching valve, which is arranged on the water purification water circuit board and communicates the first waste water return channel and the second waste water return channel.

[0021] In one embodiment, the water purification device further includes a first TDS probe and a second TDS probe. The first TDS probe is arranged in the inlet water channel, and the second TDS probe is arranged in the outlet water channel.

[0022] In one embodiment, a drinking water channel is further formed inside the water purification water circuit board, and the drinking water channel is communicated with the pure water tank;

[0023] The water purification device further includes a second switching valve, which is arranged on the water purification water circuit board and connects the drinking water water channel and the water outlet water channel.

[0024] In one embodiment, the water purification device further includes a drinking water water circuit board, and a drinking water channel is formed inside the drinking water water circuit board. The water purification water circuit board is connected to the pure water tank through the drinking water channel.

[0025] In one embodiment, the drinking water water circuit board is further provided with a first drinking water interface and a second drinking water interface that are connected to the drinking water channel. The drinking water channel is connected to the drinking water water channel through the first drinking water interface, and the drinking water channel is connected to the pure water tank through the second drinking water interface.

[0026] In one embodiment, the water purification device further includes a heat exchange module; the drinking water water circuit board is further provided with a third drinking water interface that is connected to the drinking water channel. The heat exchange module includes a heating component, and the heating component is connected to the third drinking water interface;

[0027] And / or, the drinking water water circuit board is further provided with a fourth drinking water interface that is connected to the drinking water channel. The heat exchange module includes a refrigeration component, and the refrigeration component is connected to the fourth drinking water interface.

[0028] In one embodiment, the water purification device further includes a first water pump, which is arranged between the third drinking water interface and the heating component and connects the third drinking water interface and the heating component;

[0029] And / or, the water purification device further includes a second water pump, which is arranged between the fourth drinking water interface and the refrigeration component and connects the fourth drinking water interface and the refrigeration component.

[0030] In one embodiment, the water purification device further includes a self-priming pump, which is arranged on the flow path between the water inlet water channel and the raw water tank and connects the water inlet water channel and the raw water tank.

[0031] In one embodiment, the water purification device further includes a first adapter, which is arranged on the drinking water water circuit board. The first adapter has a first transfer interface and a second transfer interface that are connected to each other. The first transfer interface is connected to the raw water tank, and the second transfer interface is connected to the self-priming pump.

[0032] In one embodiment, the water purification device further includes a second adapter, which is arranged on the drinking water water circuit board. The second adapter has a third transfer interface and a fourth transfer interface that are connected to each other. The third transfer interface is connected to the waste water return water channel, and the fourth transfer interface is connected to the raw water tank.

[0033] The technical solution of the present invention proposes a water purification device, which includes a raw water tank, a pure water tank, a reverse osmosis filter element, and a water purification water circuit board. A water circuit channel is formed inside the water purification water circuit board, and the reverse osmosis filter element is connected to the raw water tank and the pure water tank respectively through the water purification water circuit board. The reverse osmosis filter element can be connected to the raw water tank and the pure water tank without being connected through pipelines, so as to realize raw water inlet, pure water output, and wastewater reflux. The pipeline connection between various components inside the water purification device is simplified, the complexity of product connection is reduced, and the reliability of the product is improved. Brief Description of the Drawings

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the structures shown in these drawings.

[0035] Figure 1 It is a schematic structural diagram of the water purification device;

[0036] Figure 2 It is a schematic structural diagram of the water purification device from another perspective;

[0037] Figure 3 It is a schematic structural diagram of the water purification water circuit board;

[0038] Figure 4 It is a schematic structural diagram of the water purification water circuit board from another perspective;

[0039] Figure 5 It is a schematic structural diagram of the drinking water circuit board.

[0040] Explanation of the Reference Numerals in the Drawings:

[0041]

[0042]

[0043] The realization of the object of the present invention, functional features, and advantages will be further described with reference to the embodiments and the accompanying drawings. Detailed Embodiments

[0044] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0045] It should be noted that if there are directional indications involved in the embodiments of the present invention, such directional indications are only used to explain the relative positional relationship, movement conditions, etc. between components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0046] In addition, if there are descriptions such as "first", "second", etc. in the embodiments of the present invention, such descriptions of "first", "second", etc. are only for descriptive purposes and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and / or" appearing throughout the text is that it includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, or solution B, or the solution where both A and B are satisfied simultaneously. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those skilled in the art can implement it. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

[0047] With the development of the desktop water purifier industry, small and multifunctional desktop machines are more popular among people. They are small in size and occupy less space, and can meet the needs of different people by carrying the usage functions of basic scenarios. However, due to volume limitations, existing desktop machines generally have relatively single functions, mostly simple single-heat type water purifiers without other expansion functions; some products also have some compatible expansion functions, but they are relatively simple experience interaction functions such as wifi and display. Currently, there are also some high-end and complex multifunctional desktop machines in the industry, but they have numerous internal components and intricate pipelines, with low manufacturability and high failure risks.

[0048] In order to solve at least one of the above technical problems, the technical solution of the present invention provides a water purification device, which includes a raw water tank, a pure water tank, a reverse osmosis filter element, and a water purification water circuit board. A water circuit channel is formed inside the water purification water circuit board, and the reverse osmosis filter element is connected to the raw water tank and the pure water tank respectively through the water purification water circuit board. The reverse osmosis filter element can be connected to the raw water tank and the pure water tank without being connected through pipelines, thereby realizing raw water intake, pure water output, and wastewater reflux. This simplifies the pipeline connection between various components inside the water purification device, reduces the complexity of product connection, and improves the reliability of the product.

[0049] Please refer to Figure 1 and Figure 3, the present invention provides a water purification device 100, which includes a raw water tank 20, a pure water tank 30, a reverse osmosis filter element 41 and a water purification water circuit board 10. A water purification water circuit channel 120, a pure water circuit channel and a waste water circuit channel 150 are formed inside the water purification water circuit board 10. The reverse osmosis filter element 41 is connected to the raw water tank 20 through the water purification water circuit channel 120; the reverse osmosis filter element 41 is connected to the pure water tank 30 through the pure water circuit channel; the reverse osmosis filter element 41 returns the waste water to the raw water tank 20 through the waste water circuit channel 150.

[0050] Specifically, the water purification device 100 includes a raw water tank 20, a pure water tank 30, a reverse osmosis filter element 41 and a water purification water circuit board 10. A water purification water circuit channel 120, a pure water circuit channel and a waste water circuit channel 150 that are mutually blocked are formed inside the water purification water circuit board 10. The reverse osmosis filter element 41 is connected to the raw water tank 20 through the water purification water circuit channel 120. The raw water tank 20 is used to connect to a water source or store raw water, and the raw water in the raw water tank 20 enters the reverse osmosis filter element 41 through the water purification water circuit channel 120. The reverse osmosis filter element 41 is connected to the pure water tank 30 through the pure water circuit channel. The pure water tank 30 is used to store the filtered pure water. After the raw water enters the reverse osmosis filter element 41 for filtration, it is divided into a path of pure water and a path of waste water. The pure water flows into the pure water tank 30 through the pure water circuit channel for drinking; the waste water returns to the raw water tank 20 through the waste water circuit channel 150. The returned waste water is mixed with the fresh raw water in the raw water tank 20 and then enters the reverse osmosis filter element 41 again for re-filtration, realizing zero discharge of waste water.

[0051] The reverse osmosis filter element 41 has a reverse osmosis water inlet for water inlet, a reverse osmosis water outlet for outputting pure water, and a reverse osmosis waste water outlet for discharging waste water. A first water purification interface communicating with the water purification water circuit channel 120 is provided on the water purification water circuit channel 120, a first pure water interface communicating with the pure water circuit channel is provided on the pure water circuit channel, and a waste water interface communicating with the waste water circuit channel 150 is provided on the waste water circuit channel 150. The reverse osmosis water inlet is connected to the first water purification interface, the reverse osmosis water outlet is connected to the first pure water interface, and the reverse osmosis waste water outlet is connected to the waste water interface. The raw water in the raw water tank 20 enters the reverse osmosis filter element 41 through the water purification water circuit channel 120. After being filtered by the reverse osmosis filter element 41, it is divided into a path of pure water and a path of waste water. The pure water flows into the pure water tank 30 through the pure water circuit channel; the waste water returns to the raw water tank 20 through the waste water circuit channel 150.

[0052] The reverse osmosis filter element 41 is respectively connected to the raw water tank 20 and the pure water tank 30 through the water purification water circuit board 10. The reverse osmosis filter element 41 can be connected to the raw water tank 20 and the pure water tank 30 without being connected by pipelines, so as to realize raw water inlet, pure water output and waste water return. The pipeline connection between various components inside the water purification device 100 is simplified, the complexity of product connection is reduced, and the reliability of the product is improved.

[0053] In one embodiment, the water purification device 100 further includes a pre-filter 42; an inlet water channel 110 is further formed inside the water purification water circuit board 10. The inlet water channel 110 is provided on the flow path between the raw water tank 20 and the water purification water channel 120, and is communicated with the water purification water channel 120 through the pre-filter 42.

[0054] Please refer to Figure 3 , an inlet water channel 110 is further formed inside the water purification water circuit board 10. The inlet water channel 110 is separated from the water purification water channel 120, the pure water water channel, and the waste water water channel 150. The inlet water channel 110 is provided on the flow path between the raw water tank 20 and the water purification water channel 120, and the inlet water channel 110 is communicated with the raw water tank 20. The water circuit board module further includes a pre-filter 42. The types of the pre-filter 42 can be PP in different forms, activated carbon in different forms, ultrafiltration, nanofiltration, and composite filters of the above materials, etc. The pre-filter 42 has a pre-inlet for water inlet and a pre-outlet for water outlet. The pre-inlet is communicated with the inlet water channel 110, and the pre-outlet is communicated with the water purification water channel 120. The inlet water channel 110 is communicated with the water purification water channel 120 through the pre-filter 42. After the raw water in the raw water tank 20 enters the inlet water channel 110, it enters the pre-filter 42 from the pre-inlet. After the raw water is roughly filtered by the pre-filter 42, it flows into the water purification water channel 120 from the pre-outlet, and then enters the reverse osmosis filter element 41 from the reverse osmosis water inlet. After being filtered by the reverse osmosis filter element 41, it is divided into a path of pure water and a path of waste water. The pure water flows into the pure water water channel from the reverse osmosis water outlet and finally flows into the pure water tank 30 for drinking; the waste water flows into the waste water water channel 150 from the reverse osmosis waste water outlet, and finally the waste water flows back into the raw water tank 20. An inlet interface and a second water purification interface are further provided on the water purification water circuit board 10. The inlet interface is communicated with the inlet water channel 110, and the second water purification interface is communicated with the water purification water channel 120. The pre-inlet of the pre-filter 42 is communicated with the inlet interface, and the pre-outlet of the pre-filter 42 is communicated with the second water purification interface.

[0055] The reverse osmosis filter element 41 and the pre-filter 42 are communicated with the water purification water circuit board 10. The water source inlet, pure water output, and waste water discharge can be completed only through the water channels inside the water purification water circuit board 10, without additional pipeline connection. In addition, the pre-filter 42 is communicated with the reverse osmosis filter element 41 through the water purification water channel 120, and the pre-filter 42 is communicated with the raw water tank 20 through the inlet water channel 110, without additional pipeline connection, which simplifies the pipeline connection between the components inside the water purification device 100, reduces the complexity of product connection, and improves the reliability of the product.

[0056] In one embodiment, the water purification device 100 further includes a post-filter 43; an outlet water channel 140 is further formed inside the water purification water circuit board 10. The outlet water channel 140 is provided on the flow path between the pure water tank 30 and the pure water water channel and is communicated with the pure water water channel through the post-filter 43.

[0057] Please refer to Figure 3 , an outlet water channel 140 is further formed inside the water purification water circuit board 10. The outlet water channel 140 is separated from the inlet water channel 110, the purified water channel 120, the pure water channel, and the wastewater channel 150. The outlet water channel 140 is provided on the flow path between the purified water channel 120 and the pure water tank 30 and is communicated with the pure water tank 30. The water circuit board module further includes a post-filter 43. The type of the post-filter 43 can be activated carbon in different forms. The post-filter 43 has a post-inlet for water inlet and a post-outlet for water outlet. The post-inlet is communicated with the purified water channel 120, and the post-outlet is communicated with the outlet water channel 140. The outlet water channel 140 is communicated with the purified water channel 120 through the post-filter 43. The purified water in the purified water channel 120 flows into the post-filter 43, is filtered, and then flows into the outlet water channel 140, and finally flows into the pure water tank 30 for drinking.

[0058] The post-filter 43 and the pre-filter 42 can be two independent filters or a composite filter. The composite filter has the filtering functions of the pre-filter 42 and the post-filter 43. There are two non-interfering flow paths inside the composite filter. One flow path is for rough filtering, equivalent to the pre-filter 42. The raw water is roughly filtered in this flow path and then enters the reverse osmosis filter 41. The other flow path is for re-filtering, equivalent to the post-filter 43. The purified water filtered by the reverse osmosis filter 41 is re-filtered in this flow path and finally flows out from the outlet of the composite filter.

[0059] The raw water in the raw water tank 20 enters the inlet water channel 110 and then enters the pre-filter 42 from the pre-inlet interface. After being roughly filtered by the pre-filter 42, the raw water enters the purified water channel 120 from the pre-outlet interface, then enters the reverse osmosis filter 41 from the reverse osmosis water inlet interface, and is filtered by the reverse osmosis filter 41 into a path of purified water and a path of wastewater. The wastewater enters the wastewater channel 150 from the reverse osmosis wastewater interface and is finally discharged. The purified water enters the pure water channel from the reverse osmosis water outlet interface. The purified water then enters the post-filter 43 from the post-inlet interface, is filtered, and is discharged from the post-outlet interface, and finally the purified water is output for drinking.

[0060] The raw water in the raw water tank 20 enters the water inlet water channel 110 and then enters the pre-filter element 42 from the front inlet. After being roughly filtered by the pre-filter element 42, the raw water flows into the purified water water channel 120 from the front outlet, and then enters the reverse osmosis filter element 41 from the reverse osmosis water inlet. After being filtered by the reverse osmosis filter element 41, it is divided into a pure water stream and a waste water stream. The waste water flows into the waste water water channel 150 from the reverse osmosis waste water outlet, and finally the waste water flows back into the raw water tank 20; the pure water flows into the pure water water channel from the reverse osmosis outlet. The pure water flows into the post-filter element 43 for filtration and then flows out from the post-outlet into the water outlet water channel 140, and finally flows into the pure water tank 30 for drinking. An outlet interface and a second pure water interface are also provided on the purified water water board 10. The outlet interface is communicated with the water outlet water channel 140, and the second pure water interface is communicated with the pure water water channel. The post-inlet of the post-filter element 43 is communicated with the second pure water interface, and the post-outlet of the post-filter element 43 is communicated with the outlet interface.

[0061] The reverse osmosis filter element 41, the pre-filter element 42 and the post-filter element 43 are communicated with the purified water water board 10. The water source inlet, pure water output and waste water discharge can be completed only through the water channels inside the purified water water board 10, without additional pipeline connection. In addition, the pre-filter element 42 is communicated with the reverse osmosis filter element 41 through the purified water water channel 120, the pre-filter element 42 is communicated with the raw water tank 20 through the water inlet water channel 110, and the post-filter element 43 is communicated with the pure water tank 30 through the water outlet water channel 140, without additional pipeline connection, which simplifies the pipeline connection between various components inside the water purification device 100, reduces the complexity of product connection, and improves the reliability of the product.

[0062] In an embodiment, the pure water water channel includes a first pure water water channel 131 and a second pure water water channel 132 that are mutually blocked. The first pure water water channel 131 is communicated with the reverse osmosis filter element 41, and the second pure water water channel 132 is communicated with the post-filter element 43; the water purification device 100 further includes a first one-way valve 11a. The first one-way valve 11a is arranged on the purified water water board 10 and communicates the first pure water water channel 131 and the second pure water water channel 132. The flow direction of the first one-way valve 11a is from the first pure water water channel 131 to the second pure water water channel 132.

[0063] Please refer to Figure 3 and Figure 4, in order to prevent water leakage when the reverse osmosis filter element 41 or the post-filter element 43 comes off, the water circuit board module is also provided with a first one-way valve 11a, and the pure water water channel is divided into a first pure water water channel 131 and a second pure water water channel 132 that are mutually blocked. The first pure water interface is arranged in the first pure water water channel 131, and the second pure water interface is arranged in the second pure water water channel 132. The first pure water water channel 131 is communicated with the reverse osmosis filter element 41 through the first pure water interface, and the second pure water water channel 132 is communicated with the post-filter element 43 through the second pure water interface. The first one-way valve 11a is arranged on the water purification water circuit board 10. One end of the first one-way valve 11a is communicated with the first pure water water channel 131 through an interface on the first pure water water channel 131, and the other end is communicated with the second pure water water channel 132 through an interface on the second pure water water channel 132. The pure water filtered by the reverse osmosis filter element 41 flows into the first pure water water channel 131 from the reverse osmosis water outlet interface, then flows into the second pure water water channel 132 through the first one-way valve 11a, and then enters the post-filter element 43 from the post-inlet interface.

[0064] In one embodiment, a waste water return channel is further formed inside the water purification water circuit board 10. The waste water return channel is arranged on the flow path between the waste water channel and the original water tank 20; the water purification device 100 further includes a waste water valve 13. The waste water valve 13 is arranged on the water purification water circuit board 10 and communicates the waste water water channel 150 with the waste water return channel.

[0065] Please refer to Figure 3 and Figure 4 , a waste water return channel is further formed inside the water purification water circuit board 10. The waste water return channel is mutually blocked from the inlet water channel 110, the water purification water channel 120, the pure water water channel, the outlet water channel 140 and the waste water water channel 150. The waste water return channel is arranged on the flow path between the waste water water channel 150 and the original water tank 20, and the waste water return channel is communicated with the original water tank 20. The waste water valve 13 is arranged on the water purification water circuit board 10. One end of the waste water valve 13 is communicated with the waste water water channel 150 through an interface on the waste water water channel 150, and the other end is communicated with the waste water return channel through an interface on the waste water return channel. The waste water filtered by the reverse osmosis filter element 41 flows into the waste water water channel 150 from the reverse osmosis waste water outlet, then flows into the waste water return channel through the waste water valve 13, and finally the waste water returns to the original water tank 20. The waste water in the waste water return channel is returned to the original water tank 20, mixed with fresh raw water and then enters the water circuit board module again for filtration, realizing zero discharge of waste water. In other embodiments, the waste water in the waste water return channel can also be directly discharged through an external waste water direct discharge pipe to reduce the inlet TDS. When the desalination rate of the water purification device 100 is certain, ensuring a lower outlet TDS, thereby ensuring the drinking water quality.

[0066] In one embodiment, the water purification device 100 further includes a second one-way valve 11b. The second one-way valve 11b is provided on the water purification water circuit board 10 and connects the water outlet water circuit channel 140 with the waste water return channel. The flow direction of the second one-way valve 11b is from the water outlet water circuit channel 140 to the waste water return channel.

[0067] Please refer to Figure 3 and Figure 4 , the waste water return channel and the water outlet water circuit channel 140 are mutually blocked. To prevent the problem of the first glass of water, the water circuit board module is provided with a second one-way valve 11b to connect the waste water return channel with the water outlet water circuit channel 140. The second one-way valve 11b is provided on the water purification water circuit board 10. One end of the second one-way valve 11b is connected to the water outlet water circuit channel 140 through an interface on the water outlet water circuit channel 140, and the other end is connected to the waste water return channel through an interface on the waste water return channel. The pure water filtered again by the post-filter 43 enters the water outlet water circuit channel 140 from the post-outlet, then flows into the waste water return channel through the second one-way valve 11b, and finally is discharged to solve the problem of the first glass of water.

[0068] In one embodiment, the waste water return channel includes a first waste water return channel 161 and a second waste water return channel 162 that are mutually blocked. The first waste water return channel 161 is connected to the waste water water circuit channel 150 through a waste water valve 13, and the second waste water return channel 162 is connected to the water outlet channel through a second one-way valve 11b; the water purification device 100 further includes a first switching valve 12a. The first switching valve 12a is provided on the water purification water circuit board 10 and connects the first waste water return channel 161 and the second waste water return channel 162.

[0069] Please refer to Figure 3 and Figure 4, To prevent all the pure water from flowing into the waste water return channel through the water outlet water channel 140 and finally being discharged as waste water, the water circuit board module is also provided with a first switching valve 12a, and the waste water return channel is divided into a first waste water return channel 161 and a second waste water return channel 162. The first waste water return channel 161 communicates with the waste water water channel 150 through a waste water valve 13, and the second waste water return channel 162 communicates with the water outlet channel through a second one-way valve 11b. The first switching valve 12a is arranged on the pure water water circuit board 10. One end of the first switching valve 12a communicates with the first waste water return channel 161 through an interface on the first waste water return channel 161, and the other end communicates with the second waste water return channel 162 through an interface on the second waste water return channel 162. The pure water filtered again by the post-filter element 43 enters the water outlet water channel 140 from the post-water outlet interface, then flows into the second waste water return channel 162 through the second one-way valve 11b, and then flows into the first waste water return channel 161 through the first switching valve 12a, and finally is discharged as waste water or returned to the original water tank 20 to solve the problem of the first glass of water. It can be understood that during normal water intake, the first switching valve 12a is in the closed state. After the pure water flows from the water outlet water channel 140 through the second one-way valve 11b into the second waste water return channel 162, due to the closed first switching valve 12a, the pure water will not flow into the first waste water return channel 161. After a long time without water intake, when water is taken again, the first switching valve 12a is in the open state. After the pure water flows from the water outlet water channel 140 through the second one-way valve 11b into the second waste water return channel 162, due to the open first switching valve 12a, the pure water flows into the first waste water return channel 161 through the first switching valve 12a to solve the problem of the first glass of water.

[0070] In one embodiment, a drinking water water channel 170 is further formed inside the pure water water circuit board 10, and the drinking water water channel 170 communicates with the pure water tank 30; the water purification device 100 further includes a second switching valve 12b, and the second switching valve 12b is arranged on the pure water water circuit board 10 and communicates the drinking water water channel 170 with the water outlet water channel 140.

[0071] Please refer to Figure 3 and Figure 4, a drinking water water passage 170 is further formed inside the water purification water circuit board 10. The drinking water water passage 170 is separated from the water inlet water passage 110, the water purification water passage 120, the pure water water passage, the water outlet water passage 140, the waste water return passage, and the waste water water passage 150. The drinking water water passage 170 is provided on the flow path between the water outlet water passage 140 and the pure water tank 30 and communicates with the pure water tank 30. To avoid the problem of the first glass of water affecting the drinking water quality, the drinking water water passage 170 is separated from the water outlet water passage 140; the water circuit board module is further provided with a second switching valve 12b. The second switching valve 12b is provided on the water purification water circuit board 10. One end of the second switching valve 12b communicates with the water outlet water passage 140 through an interface on the water outlet water passage 140, and the other end communicates with the drinking water water passage 170 through an interface on the drinking water water passage 170. The pure water filtered again by the post-filter 43 enters the water outlet water passage 140 from the post-outlet interface, then flows into the drinking water water passage 170 through the second switching valve 12b, and finally flows to the water outlet assembly for drinking.

[0072] It can be understood that when taking water normally, the first switching valve 12a is in the closed state and the second switching valve 12b is in the open state. After the pure water flows from the water outlet water passage 140 into the second waste water return passage 162 through the second one-way valve 11b, since the first switching valve 12a is closed, the pure water will not flow into the first waste water return passage 161. Since the second switching valve 12b is open, the pure water flows from the water outlet water passage 140 through the second switching valve 12b into the drinking water water passage 170 and finally flows to the water outlet assembly for drinking. After not taking water for a long time, when taking water again, the first switching valve 12a is in the open state and the second switching valve 12b is in the closed state. Since the second switching valve 12b is closed, the pure water will not flow into the drinking water water passage 170, but flows into the second waste water return passage 162 through the second one-way valve 11b. Since the first switching valve 12a is open, the pure water flows into the first waste water return passage 161 through the first switching valve 12a to solve the problem of the first glass of water.

[0073] In one embodiment, the water purification device 100 further includes a first TDS probe 14a and a second TDS probe 14b. The first TDS probe 14a is provided in the water inlet water passage 110, and the second TDS probe 14b is provided in the water outlet water passage 140.

[0074] Please refer to Figure 3 and Figure 4, the waterway board module further includes a first TDS probe 14a and a second TDS probe 14b. The purified water waterway board 10 is also provided with a first TDS interface communicated with the inlet waterway channel 110, and a second TDS interface communicated with the outlet waterway channel 140. The first TDS probe 14a is inserted into the inlet waterway channel 110 through the first TDS interface, and the first TDS probe 14a is used to detect the inlet TDS of the raw water in the inlet waterway channel 110; the second TDS probe 14b is inserted into the outlet waterway channel 140 through the second TDS interface, and the second TDS probe 14b is used to detect the outlet TDS of the purified water in the outlet waterway channel 140. According to the inlet TDS and outlet TDS detected by the first TDS probe 14a and the second TDS probe 14b, it can be known whether the desalination rate of the purified water in the outlet waterway channel 140 meets the standard.

[0075] When the first TDS probe 14a and the second TDS probe 14b detect that the outlet desalination rate does not meet the standard, the first switching valve 12a opens, the second switching valve 12b closes, and the water flow in the outlet waterway channel 140 flows to the waste water return channel and finally returns to the original water tank 20 or is directly discharged as waste water through the waste water direct discharge pipe. When the first TDS probe 14a and the second TDS probe 14b detect that the outlet desalination rate meets the standard, the first switching valve 12a closes, the second switching valve 12b opens, and the water flow in the outlet waterway channel 140 flows to the drinking water waterway channel 170 and finally is output from the outlet assembly for drinking.

[0076] It can be understood that raw water flows into the inlet water channel 110. At this time, the first TDS probe 14a detects the inlet TDS of the raw water. The raw water enters the pre-filter element 42 from the front inlet, and after being roughly filtered by the pre-filter element 42, it flows into the purified water channel 120 from the front outlet, and then enters the reverse osmosis filter element 41 from the reverse osmosis inlet. After being filtered by the reverse osmosis filter element 41, it is divided into a pure water path and a waste water path. The pure water flows into the first pure water channel 131 from the reverse osmosis outlet, and then flows into the second pure water channel 132 through the first one-way valve 11a, and then enters the post-filter element 43 from the post inlet for further filtration. The pure water after further filtration flows into the outlet water channel 140 from the post outlet. At this time, the second TDS probe 14b detects the outlet TDS of the pure water. The outlet water channel 140 is divided into a drinking water path and a waste water path. When the first TDS probe 14a and the second TDS probe 14b detect that the desalination rate of the outlet water does not meet the standard, the first switching valve 12a is opened, and the second switching valve 12b is closed. The pure water in the outlet water channel 140 flows into the second waste water return channel 162 through the second one-way valve 11b, and then flows into the first waste water return channel 161 through the first switching valve 12a, and finally returns to the raw water tank 20 or is directly discharged as waste water through the waste water direct discharge pipe. When the first TDS probe 14a and the second TDS probe 14b detect that the desalination rate of the outlet water meets the standard, the first switching valve 12a is closed, and the second switching valve 12b is opened. The pure water in the outlet water channel 140 flows into the drinking water channel 170 through the second switching valve 12b, and finally flows to the outlet assembly for drinking. The waste water filtered by the reverse osmosis filter element 41 flows into the waste water channel 150 from the reverse osmosis waste water outlet, and then flows into the first waste water return channel 161 through the waste water valve 13, and finally returns to the raw water tank 20 or is directly discharged as waste water through the waste water direct discharge pipe.

[0077] When the user takes drinking water, due to the waste water reflux, the outlet TDS will increase with the increase of the water taking time. Therefore, it is designed that when the user's water taking time reaches a certain value, the waste water direct discharge program 1 is started, that is, the normal water production state is maintained, the first switching valve 12a is opened, the second switching valve 12b is closed, and the waste water in the first waste water return channel 161 is directly discharged through the waste water direct discharge pipe and does not enter the raw water tank 20. The outlet TDS can be restored to the starting level in a short time, and the influence on the drinking water flux is small.

[0078] When it is detected that the user has not used the water purification device 100 for a long time, the waste water direct discharge program 2 is started, and only waste water is discharged at this time; the raw water enters the reverse osmosis filter element 41 and then flows out from the waste water water path channel 150, and then flows into the first waste water return channel 161, and then is directly discharged into the waste water direct discharge pipeline, completing the replacement of the water in the reverse osmosis filter element 41, the waste water water path channel 150 and the first waste water return channel 161, preventing the reverse osmosis filter element 41 and the waste water valve 13 from scaling, and extending the service life of the reverse osmosis filter element 41 and the waste water valve 13. The waste water direct discharge program 2 is mainly used to avoid the problem that when the user has not used the water purification device 100 for a long time, the waste water stays in the reverse osmosis filter element 41, the waste water water path channel 150 and the first waste water return channel 161 for a long time, causing scale deposition and affecting the service life.

[0079] By integrating the water purification water circuit board 10, the reverse osmosis filter element 41, the pre-filter element 42, the post-filter element 43, the first switching valve 12a, the second switching valve 12b, the first one-way valve 11a, the second one-way valve 11b and the waste water valve 13 into a module, in a compact space, the design of the water path channels inside the water purification water circuit board 10 meets the water purification requirements of the water purification device 100, greatly simplifies the pipeline connection between each component, and improves the manufacturability and quality reliability of the product.

[0080] In an embodiment, the water purification device 100 further includes a drinking water water circuit board 50, and a drinking water channel is formed inside the drinking water water circuit board 50. The water purification water circuit board 10 is communicated with the pure water tank 30 through the drinking water channel.

[0081] Please refer to Figure 5 , a drinking water channel is formed inside the drinking water water circuit board 50. The drinking water water circuit board 50 is communicated with the drinking water water path channel 170 through a pipeline, and the pure water in the drinking water water path channel 170 flows into the drinking water channel. The drinking water channel is communicated with the pure water tank 30, and the pure water in the drinking water water path channel 170 flows into the pure water tank 30 through the drinking water channel. The pure water tank 30 is communicated with the water outlet assembly, and the pure water stored in the pure water tank 30 flows to the water outlet assembly for drinking. The pure water tank 30 can also be directly taken out as a drinking water cup. When a large amount of drinking water needs to be quickly taken, the pure water tank 30 can be directly taken out.

[0082] In an embodiment, the drinking water water circuit board 50 is further provided with a first drinking water interface 510 and a second drinking water interface 520 communicated with the drinking water channel. The drinking water channel is communicated with the drinking water water path channel 170 through the first drinking water interface 510, and the drinking water channel is communicated with the pure water tank 30 through the second drinking water interface 520.

[0083] Please refer to Figure 5, the drinking water circuit board 50 is further provided with a first drinking water interface 510 and a second drinking water interface 520, and the first drinking water interface 510 and the second drinking water interface 520 are respectively communicated with the drinking water channel. The first drinking water interface 510 is communicated with the drinking water circuit channel 170 through a pipeline, and the pure water in the drinking water circuit channel 170 flows into the drinking water channel from the first drinking water interface 510 through the pipeline. The second drinking water interface 520 is communicated with the pure water tank 30, and the pure water in the drinking water channel flows into the pure water tank 30 from the second drinking water interface 520.

[0084] In one embodiment, the water purification device 100 further includes a heat exchange module 60; the drinking water circuit board 50 is further provided with a third drinking water interface 530 communicated with the drinking water channel, the heat exchange module 60 includes a heating component 610, and the heating component 610 is communicated with the third drinking water interface 530; and / or, the drinking water circuit board 50 is further provided with a fourth drinking water interface 540 communicated with the drinking water channel, the heat exchange module 60 includes a refrigeration component 620, and the refrigeration component 620 is communicated with the fourth drinking water interface 540.

[0085] Please refer to Figure 2 and Figure 5 , the drinking water circuit board 50 is further provided with a third drinking water interface 530, and the third drinking water interface 530 is communicated with the drinking water channel. The water purification device 100 further includes a heat exchange module 60, the heat exchange module 60 includes a heating component 610, and the heating component 610 is communicated with the third drinking water interface 530. The pure water flows from the third drinking water interface 530 to the heating component 610, and after being heated by the heating component 610, the high-temperature pure water is output from the water outlet component for drinking. The pure water tank 30 is communicated with the drinking water channel, and pure water is stored inside the pure water tank 30. When hot water needs to be taken, the pure water in the pure water tank 30 flows from the third drinking water interface 530 to the heating component 610. The heating component 610 can be an instant heating component, and the heating component 610 has a power of more than 2000 wa. When the pure water flows through the heating component 610, the water temperature immediately rises. There is no need to wait when taking hot water, which improves the user experience. Since the power of the heating component 610 is constant, the water intake temperature is negatively correlated with the water intake speed. When the water intake temperature is low, the water intake speed is fast; when the water intake temperature is high, the water intake speed is low.

[0086] The drinking water waterway board 50 is also provided with a fourth drinking water interface 540, and the fourth drinking water interface 540 communicates with the drinking water channel. The heat exchange module 60 includes a refrigeration component 620, and the refrigeration component 620 communicates with the fourth drinking water interface 540. Pure water flows from the fourth drinking water interface 540 to the refrigeration component 620. After being refrigerated by the refrigeration component 620, the low-temperature pure water is output from the water outlet component for drinking. The pure water tank 30 communicates with the drinking water channel, and pure water is stored inside the pure water tank 30. When low-temperature water needs to be taken, the pure water in the pure water tank 30 flows from the fourth drinking water interface 540 to the refrigeration component 620. The refrigeration component 620 can be an electronic ice tank. The electronic ice tank uses semiconductor elements for refrigeration. It mainly achieves the refrigeration purpose through an electronic refrigeration chip, and has the advantages of low power consumption, low running noise, and no pollution. The refrigeration chip in the electronic ice tank contains many electric couples formed by P-type and N-type semiconductor elements. After passing direct current, the hot end of the semiconductor releases heat, and the cold end absorbs heat, generating a temperature difference. Then the cold end is contacted with the water tank to absorb the heat of the water, so that the water temperature in the water tank continuously drops. The hot end dissipates heat through a DC fan and then controls the operation of the refrigeration chip through a thermosensitive sensor to achieve the purpose of controlling the water temperature.

[0087] In an embodiment, the water purification device 100 further includes a first water pump 71. The first water pump 71 is disposed between the third drinking water interface 530 and the heating component 610 and communicates the third drinking water interface 530 with the heating component 610; and / or, the water purification device 100 further includes a second water pump 72. The second water pump 72 is disposed between the fourth drinking water interface 540 and the refrigeration component 620 and communicates the fourth drinking water interface 540 with the refrigeration component 620.

[0088] Please refer to Figure 2 and Figure 5 , the water purification device 100 further includes a first water pump 71. The first water pump 71 is disposed between the third drinking water interface 530 and the heating component 610 and communicates the third drinking water interface 530 with the heating component 610. When hot water needs to be taken, the first water pump 71 is started, and the pure water in the pure water tank 30 passes through the drinking water channel from the third drinking water interface 530 through the first water pump 71 and the heating component 610 in sequence. The pure water immediately heats up after passing through the heating component 610 and finally is output from the water outlet component for drinking.

[0089] The water purification device 100 further includes a second water pump 72. The second water pump 72 is disposed between the fourth drinking water interface 540 and the refrigeration component 620 and communicates the fourth drinking water interface 540 with the refrigeration component 620. When low-temperature water needs to be taken, the second water pump 72 is started, and the pure water in the pure water tank 30 passes through the drinking water channel from the fourth drinking water interface 540 through the second water pump 72 and the refrigeration component 620 in sequence. The pure water cools down after passing through the refrigeration component 620 and finally is output from the water outlet component for drinking.

[0090] In one embodiment, the water purification device 100 further includes a self-priming pump 73. The self-priming pump 73 is arranged on the flow path between the water inlet channel 110 and the raw water tank 20, and connects the water inlet channel 110 and the raw water tank 20.

[0091] Please refer to Figure 2 , the water purification device 100 further includes a self-priming pump 73, which has a pump inlet and a pump outlet. The pump inlet is connected to the raw water tank 20, and the pump outlet is connected to the water inlet channel 110 of the water purification water board 10. When the self-priming pump 73 is started, the raw water in the raw water tank 20 enters the self-priming pump 73 from the pump inlet, and after the water pressure rises, it flows into the water inlet channel 110 from the pump outlet for water purification.

[0092] In one embodiment, the water purification device 100 further includes a first adapter 81. The first adapter 81 is arranged on the drinking water circuit board 50. The first adapter 81 has a first adapter port 81a and a second adapter port 81b that are connected to each other. The first adapter port 81a is connected to the raw water tank 20, and the second adapter port 81b is connected to the self-priming pump 73.

[0093] Please refer to Figure 1 and Figure 5 , the water purification device 100 further includes a first adapter 81. The first adapter 81 is installed on the drinking water circuit board 50. The first adapter 81 has a first adapter port 81a and a second adapter port 81b, and the first adapter port 81a and the second adapter port 81b are connected. The first adapter port 81a is for water inlet, and the raw water in the raw water tank 20 enters the first adapter 81 from the first adapter port 81a; the second adapter port 81b is for water outlet, and the raw water flows out from the second adapter port 81b. The water inlet direction of the first adapter port 81a is different from the water outlet direction of the second adapter port 81b. The raw water tank 20 is installed above the first adapter 81, and the first adapter 81 is connected to the raw water tank 20. The bottom of the raw water tank 20 is provided with a raw water outlet, and the first adapter port 81a is connected to the raw water outlet. The raw water in the raw water tank 20 flows into the first adapter 81 through the first adapter port 81a and then flows out from the second adapter port 81b. The second adapter port 81b is connected to the self-priming pump 73 through a pipeline, and the self-priming pump 73 is also connected to the water inlet channel 110. The raw water in the raw water tank 20 flows into the water purification circuit board 10 through the first adapter 81.

[0094] In one embodiment, the water purification device 100 further includes a second adapter 82. The second adapter 82 is arranged on the drinking water circuit board 50. The second adapter 82 has a third adapter port 82a and a fourth adapter port 82b that are connected to each other. The third adapter port 82a is connected to the waste water return water channel, and the fourth adapter port 82b is connected to the raw water tank 20.

[0095] Please refer to Figure 1 and Figure 5, the water purification device 100 further includes a second adapter 82. The second adapter 82 is installed on the drinking water circuit board 50. The second adapter 82 has a third transfer port 82a and a fourth transfer port 82b, and the third transfer port 82a and the fourth transfer port 82b are communicated. The third transfer port 82a is used for water inlet, and the wastewater in the wastewater return water circuit channel enters the second adapter 82 from the third transfer port 82a; the fourth transfer port 82b is used for the wastewater to flow back to the original water tank 20, and the wastewater flows back to the original water tank 20 from the fourth transfer port 82b. The water inlet directions of the third transfer port 82a and the fourth transfer port 82b are different from the water outlet direction of the second transfer port 81b. The wastewater return water circuit channel is communicated with the third transfer port 82a through a pipeline; a wastewater return inlet is further provided at the bottom of the original water tank 20, and the fourth transfer port 82b is communicated with the wastewater return inlet. The wastewater in the wastewater return water circuit channel enters the second adapter 82 through the third transfer port 82a and then flows back to the original water tank 20 from the fourth transfer port 82b.

[0096] The technical solution of the present invention proposes a water purification device 100. The water purification device 100 includes an original water tank 20, a pure water tank 30, a reverse osmosis filter element 41, and a purified water circuit board 10. A water circuit channel is formed inside the purified water circuit board 10. The reverse osmosis filter element 41 is respectively communicated with the original water tank 20 and the pure water tank 30 through the purified water circuit board 10. The reverse osmosis filter element 41 can be communicated with the original water tank 20 and the pure water tank 30 without being connected through pipelines, so as to realize raw water inlet, pure water output, and wastewater reflux. The pipeline connection between various components inside the water purification device 100 is simplified, the complexity of product connection is reduced, and the reliability of the product is improved.

[0097] The above are only optional embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structural transformation made under the concept of the present invention by using the content of the specification and drawings of the present invention, or directly / indirectly applied in other related technical fields, is included in the patent protection scope of the present invention.

Claims

1. A water purification device, characterized in that, it includes: A raw water tank; A pure water tank; A reverse osmosis filter element; A water purification water circuit board, inside which there are formed a water purification water circuit channel, a pure water circuit channel and a wastewater circuit channel that communicate with the reverse osmosis filter element, the reverse osmosis filter element is communicated with the raw water tank through the water purification water circuit channel; the reverse osmosis filter element is communicated with the pure water tank through the pure water circuit channel; the reverse osmosis filter element returns the wastewater to the raw water tank through the wastewater circuit channel; the water purification device further includes a wastewater valve, a first one-way valve, a second one-way valve, a first switching valve and a second switching valve provided on the water purification water circuit board, the pure water circuit channel includes a first pure water circuit channel and a second pure water circuit channel that are mutually blocked. The first pure water circuit channel is communicated with the reverse osmosis filter element. The first one-way valve communicates the first pure water circuit channel and the second pure water circuit channel. The flow direction of the first one-way valve is from the first pure water circuit channel to the second pure water circuit channel; inside the water purification water circuit board, there are also formed an outlet water circuit channel, a drinking water circuit channel and a wastewater return channel. The outlet water circuit channel is provided on the flow path between the pure water tank and the pure water circuit channel. The drinking water circuit channel is communicated with the pure water tank. The wastewater return channel is provided on the flow path between the wastewater channel and the raw water tank. The wastewater return channel includes a first wastewater return channel and a second wastewater return channel that are mutually blocked; the first wastewater return channel is communicated with the wastewater circuit channel through the wastewater valve. The second wastewater return channel is communicated with the outlet water circuit channel through the second one-way valve. The flow direction of the second one-way valve is from the outlet water circuit channel to the wastewater return channel; the first switching valve communicates the first wastewater return channel and the second wastewater return channel. The second switching valve communicates the drinking water circuit channel and the outlet water circuit channel.

2. The water purification device according to claim 1, characterized in that, the water purification device further includes a pre-filter element; inside the water purification water circuit board, there is also formed an inlet water circuit channel. The inlet water circuit channel is provided on the flow path between the raw water tank and the water purification water circuit channel and is communicated with the water purification water circuit channel through the pre-filter element.

3. The water purification device according to claim 2, characterized in that, the water purification device further includes a post-filter element. The outlet water circuit channel is communicated with the pure water circuit channel through the post-filter element.

4. The water purification device according to claim 3, characterized in that, the second pure water circuit channel is communicated with the post-filter element.

5. The water purification device according to claim 2, characterized in that, the water purification device further includes a first TDS probe and a second TDS probe. The first TDS probe is provided in the inlet water circuit channel. The second TDS probe is provided in the outlet water circuit channel.

6. The water purification device according to claim 1, characterized in that, The water purification device further includes a drinking water waterway board, a drinking water channel is formed inside the drinking water waterway board, and the water purification waterway board is communicated with the pure water tank through the drinking water channel.

7. The water purification device according to claim 6, characterized in that the drinking water waterway board is further provided with a first drinking water interface and a second drinking water interface communicated with the drinking water channel, the drinking water channel is communicated with the drinking water waterway channel through the first drinking water interface, and the drinking water channel is communicated with the pure water tank through the second drinking water interface.

8. The water purification device according to claim 6, characterized in that the water purification device further includes a heat exchange module; the drinking water waterway board is further provided with a third drinking water interface communicated with the drinking water channel, the heat exchange module includes a heating component, and the heating component is communicated with the third drinking water interface; and / or, the drinking water waterway board is further provided with a fourth drinking water interface communicated with the drinking water channel, the heat exchange module includes a refrigeration component, and the refrigeration component is communicated with the fourth drinking water interface.

9. The water purification device according to claim 8, characterized in that the water purification device further includes a first water pump, the first water pump is arranged between the third drinking water interface and the heating component and communicates the third drinking water interface with the heating component; and / or, the water purification device further includes a second water pump, the second water pump is arranged between the fourth drinking water interface and the refrigeration component and communicates the fourth drinking water interface with the refrigeration component.

10. The water purification device according to claim 2, characterized in that the water purification device further includes a self-priming pump, the self-priming pump is arranged on the flow path between the water inlet waterway channel and the raw water tank and communicates the water inlet waterway channel with the raw water tank.

11. The water purification device according to claim 10, characterized in that the water purification device further includes a drinking water waterway board, a drinking water channel is formed inside the drinking water waterway board, and the water purification waterway board is communicated with the pure water tank through the drinking water channel; the water purification device further includes a first adapter, the first adapter is arranged on the drinking water waterway board, the first adapter has a first transfer interface and a second transfer interface communicated with each other, the first transfer interface is communicated with the raw water tank, and the second transfer interface is communicated with the self-priming pump.

12. The water purification device according to claim 6, characterized in that the water purification device further includes a second adapter, the second adapter is arranged on the drinking water waterway board, the second adapter has a third transfer interface and a fourth transfer interface communicated with each other, the third transfer interface is communicated with the waste water return waterway channel, and the fourth transfer interface is communicated with the raw water tank.

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