Water purifier water circuit structure

Abstract

This utility model discloses a water circuit structure for a water purifier, including an inlet pipe, a reverse osmosis filter element, and a flushing component. The inlet of the pre-activated carbon filter element is connected to one end of the inlet pipe. The reverse osmosis filter element has a raw water inlet, a pure water outlet, and a wastewater outlet. The flushing component includes a three-way valve, a first connecting pipe, a second connecting pipe, and a third connecting pipe. The two ends of the first connecting pipe are respectively connected to the outlet of the pre-activated carbon filter element and the inlet of the three-way valve. One end of the second connecting pipe is connected to the first outlet of the three-way valve. The two ends of the third connecting pipe are respectively connected to the second outlet of the three-way valve and the raw water inlet. By providing a three-way valve, a first connecting pipe, a second connecting pipe, and a third connecting pipe, and adding a flushing pipeline at the outlet of the pre-activated carbon filter element, this utility model enables flushing of the pre-activated carbon filter element without disassembling it, and the flushing water will not flow into the reverse osmosis filter element and contaminate the reverse osmosis membrane.

Description

Technical Field

[0001] This utility model relates to the field of water purifiers, and in particular to a water circuit structure for a water purifier. Background Technology

[0002] Current water purifiers typically have the filter cartridges pre-installed in the machine's piping. Before the water is supplied to the user's home, if flushing of the pre-filter is required, it must be removed, flushed separately, and then reinstalled, which is cumbersome. If the pre-filter is not flushed before supplying water to the machine, the carbon powder from the pre-filter will be directly flushed into the reverse osmosis filter, causing blockage on the reverse osmosis membrane surface and reducing the lifespan of the reverse osmosis filter. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a water circuit structure for a water purifier.

[0004] The technical solution of this utility model is as follows: it includes an inlet pipe, a reverse osmosis filter element, and a flushing component. The inlet of the pre-activated carbon filter element is connected to one end of the inlet pipe. The reverse osmosis filter element has a raw water inlet, a pure water outlet, and a wastewater outlet. The flushing component includes a three-way valve, a first connecting pipe, a second connecting pipe, and a third connecting pipe. The two ends of the first connecting pipe are respectively connected to the outlet of the pre-activated carbon filter element and the inlet of the three-way valve. One end of the second connecting pipe is connected to the first outlet of the three-way valve. The two ends of the third connecting pipe are respectively connected to the second outlet of the three-way valve and the raw water inlet.

[0005] Furthermore, the wastewater outlet is connected to a wastewater pipe, and the other end of the second connecting pipe is connected to the wastewater pipe.

[0006] Furthermore, the wastewater pipe is equipped with a wastewater solenoid valve, which is located between the wastewater outlet and the connection point between the second connecting pipe and the wastewater pipe.

[0007] Furthermore, a PP filter element is provided on the water inlet pipe.

[0008] Furthermore, it also includes a post-filter element, which is connected to the pure water outlet via a fourth connecting pipe. Furthermore, a one-way valve is provided on the fourth connecting pipe.

[0009] Furthermore, a low-pressure switch is provided on the water inlet pipe, which is located upstream of the PP filter element, and a high-pressure switch is provided on the fourth connecting pipe, which is located between the outlet of the one-way valve and the inlet of the post-filter element.

[0010] Furthermore, the pre-activated carbon filter element is a granular activated carbon filter element or a carbon rod filter element.

[0011] Furthermore, a pump is installed on the third connecting pipe.

[0012] Furthermore, it also includes a turbidity detection module, a control device, and a prompting element. The turbidity detection module is located on the third connecting pipe, and the control device is electrically connected to the turbidity detection module and the prompting element, respectively.

[0013] According to the water circuit structure of the water purifier of this utility model, it has at least the following technical effects: 1. By adding a flushing pipeline to the outlet of the pre-activated carbon filter element by setting a three-way valve, a first connecting pipe, a second connecting pipe and a third connecting pipe, the pre-activated carbon filter element can be flushed without disassembling it, and the flushing water will not flow into the reverse osmosis filter element and contaminate the reverse osmosis membrane.

[0014] 2. The wastewater pipe of the reverse osmosis filter is used to discharge the flushing water, eliminating the need for an additional structure to receive the flushing water, thus simplifying the internal structure of the water purifier.

[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] Additional aspects and advantages of this utility model will become apparent and readily understood from the description of the technical solution in conjunction with the following drawings, wherein: Figure 1 This is a schematic diagram of the water circuit structure of the water purifier in the first embodiment; Figure 2 This is a schematic diagram of the water circuit structure of the water purifier in the second embodiment.

[0017] Reference numerals: Inlet pipe 100, PP filter element 110, low-pressure switch 120, pre-activated carbon filter element 200, reverse osmosis filter element 300, raw water inlet 310, pure water outlet 320, wastewater outlet 330, wastewater pipe 331, wastewater solenoid valve 332, flushing component 400, three-way valve 410, first connecting pipe 420, second connecting pipe 430, third connecting pipe 440, pump 441, post-filter element 500, fourth connecting pipe 510, one-way valve 511, high-pressure switch 512, turbidity detection module 600. Detailed Implementation

[0018] The technical solution of this utility model is described in detail below. Examples of the technical solution are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The technical solution described below with reference to the accompanying drawings is exemplary and is only used to explain this utility model, and should not be construed as limiting this utility model.

[0019] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0020] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0021] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0022] Reference Figure 1 , 2 As shown, the water purifier water circuit structure provided in the embodiment of this utility model includes an inlet pipe 100, a pre-activated carbon filter 200, a reverse osmosis filter 300, and a flushing component 400. The inlet of the pre-activated carbon filter 200 is connected to one end of the inlet pipe 100. The reverse osmosis filter 300 has a raw water inlet 310, a pure water outlet 320, and a wastewater outlet 330. The flushing component 400 includes a three-way valve 410, a first connecting pipe 420, a second connecting pipe 430, and a third connecting pipe 440. The two ends of the first connecting pipe 420 are respectively connected to the outlet of the pre-activated carbon filter 200 and the inlet α of the three-way valve 410. One end of the second connecting pipe 430 is connected to the first outlet β of the three-way valve 410. The two ends of the third connecting pipe 440 are respectively connected to the second outlet γ of the three-way valve 410 and the raw water inlet 310.

[0023] By adding a flushing pipe to the outlet of the pre-activated carbon filter 200 by setting a three-way valve 410, a first connecting pipe 420, a second connecting pipe 430 and a third connecting pipe 440, the pre-activated carbon filter 200 can be flushed without disassembling it, and the flushing water will not flow into the reverse osmosis filter 300 and contaminate the reverse osmosis membrane.

[0024] When the water purifier is turned on for the first time or after a new pre-activated carbon filter 200 is replaced, press the flush button on the water purifier. The three-way valve 410 controls the connection between the inlet α and the first outlet β. The water in the inlet pipe 100 flushes the pre-activated carbon filter 200. The flushed water enters the three-way valve 410 through the first connecting pipe 420 and the inlet α, and then is discharged from the first outlet β and the second connecting pipe 430 to the outside of the water purifier or to other locations.

[0025] When the water purifier is producing water normally, the three-way valve 410 controls the connection between the inlet α and the second outlet γ. The water in the inlet pipe 100 passes through the first connecting pipe 420 and the third connecting pipe 440 in sequence, so that the water enters the reverse osmosis filter 300 after passing through the pre-activated carbon filter 200 for normal water production.

[0026] Furthermore, such as Figure 1 , 2 As shown, wastewater outlet 330 is connected to wastewater pipe 331, and the other end of second connecting pipe 430 is connected to wastewater pipe 331.

[0027] The wastewater pipe 331 of the reverse osmosis filter element 300 is used to discharge the flushing water, eliminating the need for an additional structure to receive the flushing water, thus simplifying the internal structure of the water purifier.

[0028] Furthermore, such as Figure 2 As shown, the wastewater pipe 331 is equipped with a wastewater solenoid valve 332, which is located between the wastewater outlet 330 and the connection point between the second connecting pipe 430 and the wastewater pipe 331.

[0029] By installing a wastewater solenoid valve 332, the wastewater solenoid valve 332 is closed when flushing water is discharged, preventing flushing water from entering the reverse osmosis filter element 300 through the wastewater pipe 331.

[0030] When flushing water is discharged, the wastewater solenoid valve 332 is closed, and the flushing water is discharged through the wastewater pipe 331 downstream of the wastewater solenoid valve 332. During normal water production, the wastewater solenoid valve 332 is opened, and the wastewater from the reverse osmosis filter element 300 is discharged through the wastewater pipe 331. Since the inlet α is not connected to the first outlet β during normal water production, the wastewater will not enter the flushing pipe.

[0031] Furthermore, such as Figure 1 As shown, a PP filter element 110 is installed on the water inlet pipe 100.

[0032] By incorporating a PP filter element 110, the raw water is filtered through the PP filter element 110 before entering the pre-activated carbon filter element 200, thus ensuring thorough filtration of the raw water.

[0033] Furthermore, such as Figure 2As shown, it also includes a post-filter 500, which is connected to the pure water outlet 320 via a fourth connecting pipe 510. The post-filter 500 can further filter the pure water filtered by the reverse osmosis filter 300, improving the taste of the water.

[0034] Furthermore, such as Figure 2 As shown, a one-way valve 511 is provided on the fourth connecting pipe 510.

[0035] A one-way valve 511 is provided to prevent pure water from flowing back into the reverse osmosis filter element 300 through the fourth connecting pipe 510.

[0036] Furthermore, such as Figure 2 As shown, a low-pressure switch 120 is provided on the water inlet pipe 100, which is located upstream of the PP filter element 110. A high-pressure switch 512 is provided on the fourth connecting pipe 510, which is located between the outlet of the one-way valve 511 and the inlet of the post-filter element 500.

[0037] By setting a low-pressure switch 120 to monitor the raw water pressure, when the water pressure is lower than the set value, the low-pressure switch 120 automatically disconnects to stop water intake, thus avoiding two risks: first, in a low-pressure environment, the reverse osmosis filter cartridge cannot produce water normally but continues to discharge wastewater, accelerating membrane element wear; second, it prevents the water pump from running dry and being damaged due to lack of water. At the same time, by setting a high-pressure switch 512 to monitor the pure water end pressure, when the one-way valve 511 malfunctions or the post-filter cartridge 500 is clogged, causing the water pressure to be too high, the high-pressure switch 512 disconnects to stop water production, thereby preventing pipeline rupture due to overpressure or damage to the reverse osmosis filter cartridge due to high pressure.

[0038] Furthermore, the pre-activated carbon filter element 200 is a granular activated carbon filter element or a carbon rod filter element.

[0039] Furthermore, such as Figure 2 As shown, a pump 441 is installed on the third connecting pipe 440 to ensure that water can enter the reverse osmosis filter element 300 with sufficient pressure.

[0040] Furthermore, such as Figure 2 As shown, it also includes a turbidity detection module 600, a control device (not shown in the figure), and a prompting element (not shown in the figure). The turbidity detection module 600 is mounted on the third connecting pipe 440, and the control device is electrically connected to the turbidity detection module 600 and the prompting element respectively.

[0041] A turbidity detection module 600 is added before the reverse osmosis filter element 300. This module is used to monitor the turbidity of the water in the water circuit in real time. When the turbidity of the water circuit exceeds the preset threshold, the turbidity detection module 600 will send a feedback signal to the control device. The control device will then drive the prompting element (such as an indicator light, buzzer, or display screen) to remind the user that the filter element needs to be replaced.

[0042] Compared to traditional methods for determining filter replacement cycles based on time or water production, this invention can determine the replacement time based on the actual filtration effect of the filter cartridge, effectively avoiding the problem of premature or late replacement of filter cartridges due to regional water quality differences (for example, in areas with better water quality: traditional methods may result in filter cartridges being replaced before they are fully used due to fixed cycles, causing resource waste; in areas with poor water quality: the pre-activated carbon filter cartridge 200 may fail prematurely, and if it is not replaced in time, it will not only reduce the filtration effect, but may also contaminate the downstream reverse osmosis membrane and affect the overall performance of the machine).

[0043] Specifically, the water inlet pipe 100 is equipped with a water inlet solenoid valve, which is located between the PP filter element and the pre-activated carbon filter element 200. The water inlet solenoid valve can control whether water enters the pre-activated carbon filter element 200.

[0044] Although the technical solutions of this utility model have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these technical solutions without departing from the principles and spirit of this utility model, the scope of which is defined by the claims and their equivalents.

Claims

1. A water circuit structure for a water purifier, characterized in that, include: Water inlet pipe; A pre-activated carbon filter element, wherein the inlet of the pre-activated carbon filter element is connected to one end of the inlet pipe; Reverse osmosis filter cartridges have raw water inlet, pure water outlet and wastewater outlet; The flushing component includes a three-way valve, a first connecting pipe, a second connecting pipe, and a third connecting pipe. The two ends of the first connecting pipe are respectively connected to the outlet of the pre-activated carbon filter and the inlet of the three-way valve. One end of the second connecting pipe is connected to the first outlet of the three-way valve. The two ends of the third connecting pipe are respectively connected to the second outlet of the three-way valve and the raw water inlet.

2. The water circuit structure of the water purifier according to claim 1, characterized in that: The wastewater outlet is connected to a wastewater pipe, and the other end of the second connecting pipe is connected to the wastewater pipe.

3. The water circuit structure of the water purifier according to claim 2, characterized in that: The wastewater pipe is equipped with a wastewater solenoid valve, which is located between the wastewater outlet and the connection point between the second connecting pipe and the wastewater pipe.

4. The water circuit structure of the water purifier according to claim 1, characterized in that: The water inlet pipe is equipped with a PP filter element.

5. The water circuit structure of the water purifier according to claim 4, characterized in that: It also includes a post-filter, which is connected to the pure water outlet via a fourth connecting pipe.

6. The water circuit structure of the water purifier according to claim 5, characterized in that: The fourth connecting pipe is equipped with a one-way valve.

7. The water circuit structure of the water purifier according to claim 6, characterized in that: A low-pressure switch is provided on the water inlet pipe, which is located upstream of the PP filter element. A high-pressure switch is provided on the fourth connecting pipe, which is located between the outlet of the one-way valve and the inlet of the post-filter element.

8. The water circuit structure of the water purifier according to claim 1, characterized in that: The pre-activated carbon filter element is a granular activated carbon filter element or a carbon rod filter element.

9. The water circuit structure of the water purifier according to claim 1, characterized in that: A pump is installed on the third connecting pipe.

10. The water circuit structure of the water purifier according to claim 1, characterized in that: It also includes a turbidity detection module, a control device, and a prompting element. The turbidity detection module is located on the third connecting pipe, and the control device is electrically connected to the turbidity detection module and the prompting element, respectively.

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