Water inlet switchable waterway system of purified drinking equipment and purified drinking equipment

By designing a water circuit system with switchable water inlet for the water purifier, the problem of the water purifier being incompatible with multiple raw water sources was solved, enabling flexible output of purified water and hot water and improving the user experience.

CN224185990UActive Publication Date: 2026-05-01KEMFLO (NANJING) ENVIRONMENTAL TECHNOLOGY CO LTD +2
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
KEMFLO (NANJING) ENVIRONMENTAL TECHNOLOGY CO LTD
Filing Date
2025-04-25
Publication Date
2026-05-01

AI Technical Summary

Technical Problem

Existing water purification equipment is not compatible with various raw water connection methods, which affects the user experience.

Method used

Design a water circuit system for a water purifier with switchable water inlet, including a raw water circuit and a purified water circuit. The system is connected to the purified water circuit via a first branch water circuit and a second branch water circuit in parallel. The raw water inlet method is controlled by a two-position three-way valve and a solenoid valve. Combined with an instant hot water circuit, purified water and hot water output are achieved.

Benefits of technology

The water purifier can flexibly switch the raw water input method under different conditions to ensure that users can obtain pure water stably and meet different usage scenarios.

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Patent Text Reader

Abstract

The utility model relates to a water path system capable of switching water inlet of purified drinking equipment, which comprises a raw water path and a purified water path, the raw water path is communicated with the purified water path, the raw water path comprises a first branch water path and a second branch water path, and the first branch water path and the second branch water path are mutually connected in parallel; and the first branch water path and the second branch water path are suitable for independently providing raw water for the purified water path, and the introduced raw water purified by the purified water path is output as purified water. Therefore, the water path system can purify raw water introduced by the raw water path into pure water and then output the pure water for users to use, in addition, the pure water output by the pure water path can also be heated to a set temperature and then output the pure water for users to use, and due to the arrangement of the first branch water path and the second branch water path in the raw water path, the water path system is more convenient to use. Therefore, the water purification path can obtain the required raw water from different paths, and the requirements of users for obtaining the raw water under different requirement conditions are met.
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Description

Water purifier with switchable water inlet system and water purifier Technical Field

[0001] This application relates to the field of water purification equipment technology, and in particular to a water circuit system with switchable water inlet for a drinking water purification device and the drinking water purification device itself. Background Technology

[0002] Water purifiers, capable of both purifying and heating water, are increasingly widely used in people's daily lives. However, current water purifiers can only use a raw water tank or a pipeline to connect to the raw water supply. Once installed, the connection method cannot be adjusted, making the purifier incompatible with both methods and impacting the user experience. Summary of the Invention

[0003] Therefore, it is necessary to provide a water system with switchable water inlet for drinking water purification equipment to address the incompatibility issue of various raw water access methods in the current switchable water inlet systems.

[0004] This application provides a water circuit system for a water purification device with switchable water inlet, including a raw water circuit and a purified water circuit. The raw water circuit is connected to the purified water circuit. The raw water circuit includes a first branch circuit and a second branch circuit. The first branch circuit and the second branch circuit are connected in parallel and are adapted to independently supply raw water to the purified water circuit. The raw water introduced through the purified water circuit is purified into pure water and then output.

[0005] In one embodiment, the first water distribution line and the second water distribution line are connected to the purified water line via a first two-position three-way valve. When the first water distribution line draws water independently, the valve port of the first two-position three-way valve connected to the first water distribution line and the purified water line is open, and the valve port of the first two-position three-way valve connected to the second water distribution line is closed; or

[0006] When the second water distribution line draws water independently, the valve port of the first two-position three-way valve connected to the second water distribution line and the purified water line is opened, and the valve port of the first two-position three-way valve connected to the first water distribution line is closed.

[0007] In one embodiment, the first water distribution path includes a raw water inlet, a three-way valve, and an inlet solenoid valve. The three-way valve is connected to the raw water inlet, the inlet end of the inlet solenoid valve is connected to the outlet of the three-way valve, and the outlet end of the inlet solenoid valve is connected to one valve port of the first two-position three-way valve.

[0008] In one embodiment, the second water distribution path includes a raw water tank, the raw water outlet of which is connected to one valve port of the first two-position three-way valve.

[0009] In one embodiment, the water purification line is provided with a filter assembly and a pure water tank. The filter assembly is adapted to filter the introduced raw water into pure water and deliver the pure water to the pure water tank.

[0010] In one embodiment, a one-way valve is provided on the connecting pipe between the filter assembly and the pure water tank to restrict the backflow of pure water filtered by the filter assembly. A water pump is also provided on the connecting pipe at the outlet of the pure water tank, and the water pump is adapted to extract pure water from the pure water tank.

[0011] In one embodiment, the wastewater outlet of the filter assembly is connected to a wastewater control device, which is connected to the wastewater pipe and the wastewater outlet of the raw water tank via a second two-position three-way valve, so that the wastewater filtered by the filter assembly flows back to the wastewater pipe or the raw water tank via the two-position three-way valve.

[0012] In one embodiment, the wastewater outlet of the filter assembly is connected to a wastewater control device, which is connected to the wastewater pipe and the wastewater outlet of the raw water tank via a second two-position three-way valve. The wastewater control device is adapted to control the wastewater filtered by the filter assembly to flow back to the wastewater pipe or the raw water tank.

[0013] In one embodiment, the instant hot water circuit is adapted to heat the flowing pure water to output hot water to the user; or

[0014] The instant hot water circuit is adapted to unheat the pure water flowing through it, so as to output room temperature water to the user.

[0015] Another aspect of this application provides a water purification device in which the water system adopts the water system described above.

[0016] In the aforementioned water purification equipment with switchable water inlet system, the water purification system can purify the raw water introduced by the first or second branch water circuit into pure water before outputting it. The first and second branch water circuits can be connected to the water purification system simultaneously. Each branch water circuit can independently introduce raw water without interfering with the other. Thus, users can choose two different raw water inlet methods and adjust between the two methods according to changes in needs to ensure a continuous supply of raw water to the water purification system for purification and to obtain pure water for user use. Attached Figure Description

[0017] Figure 1 is a water circuit diagram of a switchable water inlet system for a water purifier according to one embodiment of this application.

[0018] Explanation of reference numerals in the attached figures:

[0019] 1. Raw water circuit; 11. First branch water circuit; 111. Three-way valve; 112. Inlet solenoid valve; 12. Second branch water circuit; 121. Raw water tank; 1211. Wastewater outlet; 1212. Raw water outlet; 13. First two-position three-way valve;

[0020] 2. Purified water circuit; 21. Filter assembly; 22. Pure water tank; 23. Booster pump; 24. Raw water TDS; 25. Check valve; 26. Wastewater control device; 27. Second two-position three-way valve; 28. Wastewater pipeline; 29. ​​Pure water TDS; 210. Water pump motor; 211. UV lamp;

[0021] 3. Instant hot water circuit; 31. Instant hot water module; 32. Water vapor separator; 321. Exhaust port; 322. Water outlet. Detailed Implementation

[0022] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0023] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0024] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0025] This application provides a water circuit system with switchable water inlet for a drinking water purifier. This system allows the raw water circuit 1 to be connected to the purified water circuit 2. The raw water circuit 1 can be connected in different ways to introduce raw water, and the introduced raw water is then introduced into the purified water circuit 2 for purification before being output. This satisfies the user's need for raw water inlet under different conditions and ensures that the customer can obtain pure water stably.

[0026] Referring to Figure 1, the water system includes a raw water path 1 and a purified water path 2. The raw water path 1 is connected to the purified water path 2. The raw water path 1 includes a first branch path 11 and a second branch path 12, which are connected in parallel. Therefore, the first branch path 11 and the second branch path 12 can independently supply raw water to the purified water path 2, and the purified water path 2 can purify the raw water introduced from the first branch path 11 and the second branch path 12 into pure water before outputting it.

[0027] In addition, to heat the output raw water, an instant hot water circuit 3 is connected to the outlet of the purified water circuit 2. The inlet of the instant hot water circuit 3 is connected to the purified water circuit 2 to receive the purified water from the purified water circuit 2. The instant hot water circuit 3 includes an instant heating module 31 and a water vapor separator 32 arranged in sequence. The instant heating module 31 heats the pure water flowing through it to a set temperature, and then connects to the inlet of the water vapor separator 32 through a connecting pipe. The water vapor separator 32 is equipped with an exhaust port 321 and a water outlet 322, and the pure water can be output to the user through the water outlet 322.

[0028] When a user needs room temperature water, the pure water in the pure water tank 22 of the purified water circuit 2 is drawn into the instant heating module 31 by the pump motor 210. At this time, the instant heating module 31 does not heat the room temperature water flowing out of the pure water tank 22. Therefore, the room temperature water can directly enter the water vapor separator 32 and be output to the user through the water vapor separator 32.

[0029] In addition, the instant hot water circuit 3 can also provide hot water to users. First, the pure water in the pure water tank 22 is drawn into the instant heating module 31 by the pump motor 210. At this time, the instant heating module 31 heats the room temperature water flowing out of the pure water tank 22, so that the room temperature water reaches the set temperature. The hot water that has reached the set temperature flows into the water vapor separator 32, and is output to the user through the outlet 322 of the water vapor separator 32.

[0030] Therefore, the purified water circuit 2 of this water system can purify the raw water introduced from the raw water circuit 1 into pure water before outputting it. Then, the instant hot water circuit 3 is directly connected to the purified water circuit 2, allowing the pure water output from the purified water circuit 2 to be directly output to the outlet 322 for user use, or the pure water output from the purified water circuit 2 to be heated to a set temperature before being output for user use. Furthermore, due to the arrangement of the first branch circuit 11 and the second branch circuit 12 in the raw water circuit 1, the purified water circuit 2 can obtain the required raw water from different paths, thus meeting the user's needs for obtaining raw water under different conditions, while ensuring the purification of the obtained raw water to ensure that the user can consistently obtain pure water.

[0031] The following is a detailed description of the connection and operation process between the first branch waterway 11, the second branch waterway 12, and the purified waterway 2 included in the raw waterway 1.

[0032] Both the first water distribution line 11 and the second water distribution line 12 are connected to the purified water line 2 via a first two-position three-way valve 13. The first water distribution line 11 includes a raw water inlet, a three-way valve 111, and an inlet solenoid valve 112. The three-way valve 111 can be connected to the raw water inlet. The inlet end of the inlet solenoid valve 112 is connected to the outlet 322 of the three-way valve 111, and the outlet end of the inlet solenoid valve 112 is connected to one port of the first two-position three-way valve 13. When the first water distribution line 11 is independently drawing water, the port of the first two-position three-way valve 13 connected to both the first water distribution line 11 and the purified water line 2 is open, while the port of the first two-position three-way valve 13 connected to the second water distribution line 12 is closed. At this time, the second water distribution line 12 cannot introduce raw water into the purified water line 2; only the first water distribution line 11 can independently introduce raw water into the purified water line 2.

[0033] Additionally, if it is necessary to switch the raw water inlet channel to the second water distribution channel 12, the second water distribution channel 12 includes a raw water tank 121, and the raw water outlet 1212 of the raw water tank 121 is connected to one valve port of the first two-position three-way valve 13. During water intake, the valve port of the first two-position three-way valve 13 corresponding to the second water distribution channel 12 and the purified water channel 2 is opened, and the valve port of the first two-position three-way valve 13 corresponding to the first water distribution channel 11 is closed. Therefore, through the above-mentioned configuration of the first water distribution channel 11 and the second water distribution channel 12, both the first water distribution channel 11 and the second water distribution channel 12 can introduce raw water into the purified water channel 2. At the same time, the first water distribution channel 11 and the second water distribution channel 12 can be switched. When the user's usage conditions only meet the usage conditions of the first water distribution channel 11, the first water distribution channel 11 can be selected as the raw water introduction channel. When the user's usage conditions only meet the usage conditions of the second water distribution channel 12, the second water distribution channel 12 can be selected as the raw water introduction channel. When the user's usage conditions can meet the usage conditions of both the first water distribution channel 11 and the second water distribution channel 12, the user can choose the appropriate raw water introduction channel based on factors such as ease of installation.

[0034] A filter assembly 21 is installed on the water purification circuit 2, and a booster pump 23 is installed upstream of the filter assembly 21. During water purification, the booster pump 23 can pressurize the raw water introduced from the raw water circuit 1 so that the raw water can smoothly enter the filter assembly 21. The filter assembly 21 can be an integrated composite filter element. The filter assembly 21 can filter the introduced raw water until it is filtered into pure water before being output. The output pure water flows directly into the pure water tank 22 for storage, and can be output for use when needed.

[0035] Furthermore, a raw water TDS24 can be added between the filter assembly 21 and the booster pump 23 as needed, through which the quality of the introduced raw water can be tested.

[0036] Furthermore, after filtering the raw water, the filter assembly 21 will also generate some wastewater. Therefore, the filter assembly 21 also needs to discharge this wastewater. The wastewater discharge methods are completely different for the different first water distribution channels 11 and second water distribution channels 12.

[0037] The wastewater outlet 1211 of the filter assembly 21 is connected to a wastewater control device 26. The wastewater control device 26 is connected to the wastewater pipe 28 and the wastewater outlet 1211 of the raw water tank 121 via a second two-position three-way valve 27. First, for the discharge of wastewater from the raw water introduced into the second water distribution line 12, when the wastewater is discharged, the valve port of the second two-position three-way valve 27 connected to the wastewater pipe 28 is closed, and the valve port of the second two-position three-way valve 27 connected to the wastewater control device 26 and the wastewater outlet 1211 of the raw water tank 121 is opened. This part of the wastewater passes through the wastewater control device 26 and the second two-position three-way valve 27 in sequence, and finally flows back into the raw water tank 121. Then, the wastewater is mixed in the raw water tank 121 and then input into the filter assembly 21 for circulation filtration.

[0038] When wastewater is discharged from the raw water introduced into the first water distribution channel 11, the valve port of the second two-position three-way valve 27 connected to the wastewater port 1211 of the raw water tank 121 is closed, and the valve port of the second two-position three-way valve 27 connected to the wastewater pipe 28 and the wastewater control device 26 is opened so that the filtered wastewater can be discharged into the wastewater pipe 28.

[0039] The water purification circuit 2 is also equipped with a pure water TDS29 and a UV lamp 211. The pure water TDS29 is located upstream of the pump motor 210, and the UV lamp 211 is located downstream of the pump motor 210. The pure water TDS29 can detect the quality of the pure water tank 22 and the pure water directly output after filtration by the filter assembly 21. The UV lamp 211 can sterilize and disinfect the output pure water to further ensure the safety of the water quality.

[0040] This embodiment also provides a water purification device, in which the water system adopts the design described above. It can purify the raw water introduced from the raw water path 1 into pure water before outputting it. Then, the instant hot water path 3 is directly connected to the purified water path 2, allowing the pure water output from the purified water path 2 to be directly output to the outlet 322 for user use via the instant hot water path 3, or the pure water output from the purified water path 2 to be heated to a set temperature before being output for user use. Furthermore, due to the arrangement of the first branch path 11 and the second branch path 12 in the raw water path 1, the purified water path 2 can obtain the required raw water from either the first branch path 11 or the second branch path 12, thereby meeting the user's need for raw water under different conditions, while ensuring the purification of the obtained raw water to ensure a stable supply of pure water to the user.

[0041] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0042] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0043] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0044] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0045] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A water circuit system with switchable water inlet for a drinking water purifier, characterized in that, It includes a raw water path and a purified water path, the raw water path being connected to the purified water path, the raw water path including a first branch path and a second branch path, the first branch path and the second branch path being connected in parallel, and the first branch path and the second branch path being adapted to independently supply raw water to the purified water path, and the raw water introduced through the purified water path being purified into pure water before being output.

2. The switchable water inlet system for the drinking water purifier according to claim 1, characterized in that, The first water distribution line and the second water distribution line are connected to the purified water line via a first two-position three-way valve. When the first water distribution line draws water independently, the valve port of the first two-position three-way valve connected to the first water distribution line and the purified water line is open, and the valve port of the first two-position three-way valve connected to the second water distribution line is closed; or when the second water distribution line draws water independently, the valve port of the first two-position three-way valve connected to the second water distribution line and the purified water line is open, and the valve port of the first two-position three-way valve connected to the first water distribution line is closed.

3. The switchable water inlet system for the drinking water purifier according to claim 2, characterized in that, The first water distribution circuit includes a raw water inlet, a three-way valve, and an inlet solenoid valve. The three-way valve is connected to the raw water inlet, the inlet end of the inlet solenoid valve is connected to the outlet of the three-way valve, and the outlet end of the inlet solenoid valve is connected to one valve port of the first two-position three-way valve.

4. The switchable water inlet system for the drinking water purifier according to claim 2, characterized in that, The second water distribution circuit includes a raw water tank, and the raw water outlet of the raw water tank is connected to one valve port of the first two-position three-way valve.

5. The switchable water inlet system for the drinking water purifier according to claim 4, characterized in that, The water purification circuit is equipped with a filter assembly and a pure water tank. The filter assembly is adapted to filter the introduced raw water into pure water and deliver the pure water to the pure water tank.

6. The switchable water inlet system for the drinking water purifier according to claim 5, characterized in that, A one-way valve is provided on the connecting pipe between the filter assembly and the pure water tank to restrict the backflow of pure water filtered by the filter assembly. A water pump is also provided on the connecting pipe at the outlet of the pure water tank, which is adapted to pump out the pure water in the pure water tank.

7. The switchable water inlet system for the drinking water purifier according to claim 5, characterized in that, The wastewater outlet of the filter assembly is connected to a wastewater control device. The wastewater control device is connected to the wastewater pipe and the wastewater outlet of the raw water tank via a second two-position three-way valve, so that the wastewater filtered by the filter assembly flows back to the wastewater pipe or the raw water tank via the second two-position three-way valve.

8. The switchable water inlet system for the drinking water purifier according to claim 1, characterized in that, It also includes an instant hot water circuit, the inlet of which is connected to the purified water circuit to receive purified water from the purified water circuit. The instant hot water circuit includes an instant heating module and a water vapor separator arranged in sequence. The inlet of the instant heating module is connected to the outlet of the purified water circuit, and the inlet of the water vapor separator is connected to the outlet of the instant heating module. The outlet of the water vapor separator is suitable for supplying water to the user.

9. The switchable water inlet system for the drinking water purifier according to claim 8, characterized in that, The instant hot water circuit is adapted to heat the pure water flowing through it to output hot water to the user; or the instant hot water circuit is adapted not to heat the pure water flowing through it to output room temperature water to the user.

10. A water purification device, characterized in that, The water purification device employs a switchable water inlet system as described in any one of claims 1 to 9.