Waterway system of water purifier and water purifier

Abstract

The utility model discloses a waterway system of a water purifier and the water purifier, the waterway system comprises a filter unit and a water tank, water flows to the water tank after being filtered by the filter unit; the water path system further comprises a waste water discharging branch and a water discharging branch, and the waste water discharging branch is communicated with the filtering unit and used for discharging filtered waste water of the filtering unit; the upstream end of the drainage branch is communicated between the filtering unit and the water tank, the downstream end of the drainage branch is communicated with the waste water drainage branch, and the drainage branch is used for draining water in a waterway out of a waterway system through the waste water drainage branch in a cleaning mode. By adopting the scheme, the pipeline between the filtering unit and the water tank is connected with the waste water discharging branch through the water discharging branch, so that a water discharging channel of the water purifying pipeline is formed, stored water in the water purifying pipeline can be discharged through the waste water discharging branch, the stored water with bacterial colonies exceeding the standard can be discharged out of the water path system, and the quality of water in the water path system is improved.

Description

Technical Field

[0001] This utility model relates to a water circuit system for a water purifier and a water purifier. Background Technology

[0002] There are currently two types of water purifiers on the market: one is a reverse osmosis water purifier with a smaller gallon capacity, which usually comes with a water outlet container, such as a pressure tank or a storage tank; the other is a direct-discharge water purifier with a larger gallon capacity. As people's living standards improve, their requirements for the quality of the purified water from these purifiers also increase. However, both types of water purifiers can experience problems with excessive bacterial counts. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the above-mentioned defects in the prior art and provide a water circuit system and a water purifier.

[0004] The present invention solves the above-mentioned technical problems through the following technical solution:

[0005] A water system for a water purifier, the water system including a filter unit and a water tank, wherein water flows to the water tank after being filtered by the filter unit;

[0006] The water system also includes a wastewater discharge branch and a drainage branch. The wastewater discharge branch is connected to the filtration unit and is used to discharge the filtered wastewater from the filtration unit.

[0007] The upstream end of the drainage branch is connected between the filter unit and the water tank, and the downstream end of the drainage branch is connected to the wastewater discharge branch. The drainage branch is used to discharge water in the water system outside the water system through the wastewater discharge branch in the cleaning mode.

[0008] In this solution, the drainage branch connects the pipe between the filter unit and the water tank to the wastewater branch, thus forming a drainage channel for the purified water pipe. This allows the water stored in the purified water pipe to be discharged through the wastewater branch, thereby removing water with excessive bacterial counts from the water system and improving the water quality within the system.

[0009] Preferably, the filtration unit includes a CPP composite filter element, an NF filter element, and an MPF ​​composite filter element, wherein the CPP composite filter element, the NF filter element, and the MPF composite filter element are arranged sequentially along the water flow direction;

[0010] An inlet solenoid valve and a diaphragm pump are sequentially installed between the CPP composite filter element and the NF filter element; the upstream end of the wastewater discharge branch is connected to the NF filter element.

[0011] Preferably, a water replenishment solenoid valve is provided between the MPF composite filter element and the water tank, and the upstream end of the drainage branch is connected between the MPF composite filter element and the water replenishment solenoid valve; a drainage solenoid valve is provided in the drainage branch.

[0012] In this solution, the water supply solenoid valve can control the flow of water into the water tank. When discharging excess water, the water supply solenoid valve can be closed to prevent water from flowing into the water tank. At the same time, the drain solenoid valve can be opened to allow water to flow into the wastewater branch.

[0013] Preferably, the drainage branch is also equipped with an LED sterilizer, which is located upstream of the drainage solenoid valve.

[0014] In this solution, an LED sterilizer can sterilize the water purification pipeline in real time, thereby further improving the achievement of the required total bacterial count.

[0015] Preferably, a room temperature water solenoid valve and a room temperature water inlet connected to the room temperature water solenoid valve are provided between the LED sterilizer and the drain solenoid valve.

[0016] Preferably, the wastewater discharge branch includes a wastewater solenoid valve and a wastewater switch valve. The wastewater solenoid valve is located upstream of the wastewater switch valve, and the downstream of the wastewater switch valve is connected to the wastewater outlet. The downstream of the discharge solenoid valve is connected between the wastewater solenoid valve and the wastewater switch valve. The wastewater solenoid valve is a combination solenoid valve that combines a solenoid valve and a throttle valve.

[0017] In this solution, by configuring the wastewater solenoid valve as a combination of a solenoid valve and a throttle valve, the wastewater discharge branch can be kept in a normally open state at the location of the wastewater solenoid valve, facilitating real-time wastewater discharge. Furthermore, the wastewater on / off valve can be used to close or open the wastewater discharge branch. During operation, the coordination between the wastewater on / off valve, the inlet solenoid valve, and the diaphragm pump allows for pre-pressurization of the water flow in the purified water pipeline, ensuring sufficient water flow for immediate use and improving user experience.

[0018] Preferably, a first check valve is provided between the NF filter element and the MPF composite filter element, a second check valve is provided between the wastewater solenoid valve and the wastewater switch valve, and a quick-connect check valve is provided downstream of the drain solenoid valve, with the outlet end of the quick-connect check valve connected between the second check valve and the wastewater switch valve.

[0019] Preferably, the lower part of the water tank is connected to the hot water outlet, and a hot water solenoid valve is provided between the water tank and the hot water outlet;

[0020] The lower part of the water tank is also connected to the drain outlet, and a first manual ball valve and a water receiving box are sequentially provided between the water tank and the drain outlet;

[0021] The water tank is provided with an exhaust port at the top, which is connected to the water receiving box and also connected to the atmosphere.

[0022] Preferably, the water system further includes a branch circuit, the upstream of which is connected between the filter unit and the water tank, and the downstream of which is connected to a branch port; the branch circuit includes a third check valve, a high-pressure switch and a second manual ball valve arranged in sequence.

[0023] A water purifier comprising a water circuit system as described above.

[0024] In this solution, the drainage branch connects the pipe between the filter unit and the water tank to the wastewater branch, thus forming a drainage channel for the purified water pipe. This allows the water stored in the purified water pipe to be discharged through the wastewater branch, thereby removing water with excessive bacterial counts from the water system and improving the water quality within the system.

[0025] The positive and progressive effects of this utility model are as follows: the drainage branch connects the pipeline between the filter unit and the water tank with the wastewater branch, thereby forming a drainage channel for the purified water pipeline. This allows the water stored in the purified water pipeline to be discharged through the wastewater branch, so as to discharge the water with excessive bacteria from the water system and improve the water quality in the water system. Attached Figure Description

[0026] Figure 1 A schematic diagram of the water circuit system of the water purifier provided in this embodiment of the utility model.

[0027] Explanation of reference numerals in the attached figures

[0028] Water system 1, inlet 11, wastewater outlet 12, branch outlet 13, ambient temperature water outlet 14, drain outlet 15, hot water outlet 16, vent outlet 17, filter unit 100, CPP composite filter element 110, inlet solenoid valve 120, diaphragm pump 130, NF filter element 140, first check valve 150, MPF composite filter element 160, wastewater branch 200, wastewater solenoid valve 210, second check valve 220, wastewater on / off valve 230, drain branch 300, LED sterilizer 310, discharge... Water solenoid valve 320, quick-connect check valve 330, water tank 400, hot water solenoid valve 410, first manual ball valve 420, water inlet box 430, high water level probe 441, medium water level probe 442, low water level probe 443, electric heating element 444, first temperature probe 445, first thermostat 446, second thermostat 447, second temperature probe 448, water supply solenoid valve 510, ambient temperature water solenoid valve 520, third check valve 610, high pressure switch 620, second manual ball valve 630. Detailed Implementation

[0029] The present invention will be further illustrated by way of embodiments below, but the present invention is not limited to the scope of the embodiments described herein.

[0030] This utility model embodiment provides a water circuit system 1 for a water purifier, such as... Figure 1 As shown, the water system 1 includes a filter unit 100 and a water tank 400. Water flows into the water tank 400 after being filtered by the filter unit 100. The water system 1 also includes a wastewater discharge branch 200 and a drainage branch 300. The wastewater discharge branch 200 is connected to the filter unit 100 and is used to discharge the filtered wastewater from the filter unit 100. The upstream end of the drainage branch 300 is connected between the filter unit 100 and the water tank 400, and the downstream end of the drainage branch 300 is connected to the wastewater discharge branch 200. The drainage branch 300 is used to discharge water in the water system 1 outside the water system 1 through the wastewater discharge branch 200 during the cleaning mode. This forms a drainage channel for the purified water pipeline, allowing the water stored in the purified water pipeline to be discharged through the wastewater discharge branch 200, so as to discharge the stored water with excessive bacteria from the water system 1 and improve the water quality within the water system 1. In this context, upstream and downstream refer to the positions along the direction of water flow: upstream is the position before the water enters a component, and downstream is the position after the water flows out of a component.

[0031] The filter unit 100 is the main unit for filtration and can be composed of multiple components, each having at least one filter element. An inlet 11 is located upstream of the filter unit 100, through which water flows into the filter unit 100, i.e., into the water system 1. As the water flows through the filter unit 100, it generates wastewater, which can be discharged through the wastewater drain branch 200. The filtered water then flows into the water tank 400. Clean water flows through the pipes between the filter unit 100 and the water tank 400; this clean water may contain excessive bacteria. The wastewater containing excessive bacteria can be discharged from the water system 1 through the drain branch 300, and further, through the wastewater drain branch 200. Thus, through the optimization of the internal water purification pipes of the water purifier, water containing certain bacteria is discharged outside the machine. Furthermore, when the stored water is discharged, it can be configured to have a certain flushing force, so that the water system 1 can achieve the required total bacterial count through the flushing method inside the water system.

[0032] like Figure 1As shown, the filtration unit 100 includes a CPP composite filter element 110, an NF filter element 140, and an MPF ​​composite filter element 160, which are arranged sequentially along the water flow direction. An inlet solenoid valve 120 and a diaphragm pump 130 are also sequentially provided between the CPP composite filter element 110 and the NF filter element 140. The upstream end of the wastewater discharge branch 200 is connected to the NF filter element 140.

[0033] Specifically, the CPP composite filter element 110 can be a composite of a polypropylene melt-blown filter element and a carbon rod, or it can be a carbon fiber filter element. The NF filter element 140 contains an NF nanofiltration membrane, which is a spiral-wound reverse osmosis membrane element. The finished filter element has an inlet, a wastewater outlet 12, and a purified water outlet; the wastewater discharge branch 200 is connected to the wastewater outlet 12. The MPF composite filter element 160 can be a composite filter element of a post-activated carbon rod filter element and an ultrafiltration membrane. The inlet solenoid valve 120 is used to control the water flow of the entire water system. The diaphragm pump 130 can provide the pressure for the NF nanofiltration membrane to pass through.

[0034] like Figure 1 As shown, a water supply solenoid valve 510 is also provided between the MPF composite filter element 160 and the water tank 400. The upstream end of the drainage branch 300 is connected between the MPF composite filter element 160 and the water supply solenoid valve 510; a drainage solenoid valve 320 is provided inside the drainage branch 300. The water supply solenoid valve 510 can control the flow of water into the water tank 400. When discharging excess water, the water supply solenoid valve 510 can be closed to prevent water from flowing into the water tank 400; at the same time, the drainage solenoid valve 320 can be opened to allow water to flow into the wastewater discharge branch 200. Specifically, the water supply solenoid valve 510 can be a pressurized solenoid valve to control the flow of water into the water tank 400.

[0035] like Figure 1 As shown, an LED sterilizer 310 is also installed in the drainage branch 300, and the LED sterilizer 310 is located upstream of the drainage solenoid valve 320. The LED sterilizer 310 can sterilize the purified water pipeline in real time to prevent some bacteria from remaining and thus further improve the achievement of the required total bacterial count. Specifically, the LED sterilizer 310 can be a 2L flow-through LED sterilizer 310.

[0036] like Figure 1 As shown, a room temperature water solenoid valve 520 is provided between the LED sterilizer 310 and the drain solenoid valve 320, and a room temperature water inlet 14 is connected to the room temperature water solenoid valve 520. Here, room temperature is a common meaning in the art and is generally the same as room temperature.

[0037] like Figure 1As shown, the wastewater discharge branch 200 includes a wastewater solenoid valve 210 and a wastewater on / off valve 230. The wastewater solenoid valve 210 is located upstream of the wastewater on / off valve 230, and the downstream of the wastewater on / off valve 230 is connected to the wastewater outlet 12. The downstream of the drain solenoid valve 320 is connected between the wastewater solenoid valve 210 and the wastewater on / off valve 230. The wastewater solenoid valve 210 is a combination solenoid valve that combines a solenoid valve and a throttle valve.

[0038] By configuring the wastewater solenoid valve 210 as a combination of a solenoid valve and a throttle valve, the wastewater discharge branch 200 can be kept normally open at the location of the wastewater solenoid valve 210, facilitating real-time wastewater discharge. Furthermore, the wastewater switch valve 230 can close or open the wastewater discharge branch 200. During use, the coordination between the wastewater switch valve 230, the inlet solenoid valve 120, and the diaphragm pump 130 allows for pre-storage pressure in the purified water pipeline, ensuring sufficient water flow upon immediate use and improving user experience.

[0039] Specifically, the wastewater solenoid valve 210 is fully open when electromagnetically opened, and can also discharge water according to the nominal process when closed. The wastewater switch valve 230 can control the opening and closing of the pipeline connected to the wastewater pipeline and the drain solenoid valve 320.

[0040] like Figure 1 As shown, a first check valve 150 is provided between the NF filter element 140 and the MPF composite filter element 160, a second check valve 220 is provided between the wastewater solenoid valve 210 and the wastewater switch valve 230, and a quick-connect check valve 330 is provided downstream of the drain solenoid valve 320. The outlet end of the quick-connect check valve 330 is connected between the second check valve 220 and the wastewater switch valve 230.

[0041] During use, the water system 1 can be preset with an internal flushing mode. When this mode is activated, the inlet solenoid valve 120, diaphragm pump 130, LED sterilizer 310, drain solenoid valve 320, and wastewater switch valve 230 all open. The default activation frequency is once every 2 hours, with each activation lasting 30 seconds. Furthermore, to meet the needs of different regions, usage scenarios, and temperatures, the activation frequency can be preset, for example, ranging from 1 to 4 hours (meaning it can be adjusted at any time within this range), and the activation time can range from 1 to 240 seconds (meaning it can be adjusted arbitrarily within this range).

[0042] Bacteria typically multiply every 20-30 minutes. Assuming a 30-minute cycle, after proper installation and testing, the total number of bacteria inside the water purifier should generally be less than or equal to 50 CFU. When the default flushing interval for water system 1 is 2 hours, with each flush lasting 30 seconds, the total number of bacteria after 2 hours is N = 50 * 16 = 800. After flushing, the total number of bacteria decreases. Assuming the system's default flushing efficiency is 80%, the remaining total number of bacteria is N = 800 * 0.2 = 160. Since the LED sterilizer 310 is on when water system 1's default flushing is activated, and the sterilization efficiency of the LED sterilizer 310 is 99.99% when the total number of bacteria is 10 to the power of 5, the final remaining total number of bacteria is N = 160 * 0.0001 = 0.0016 ≈ 0. Therefore, after flushing according to the above logic, the total number of bacteria can be considered as 0.

[0043] Furthermore, by adjusting the opening and closing times of the inlet solenoid valve 120, the diaphragm pump 130, and the wastewater switch valve 230, the output water can be kept in a uniform state.

[0044] Specifically, the wastewater solenoid valve 210 is a combined solenoid valve containing two independent water circuits. One circuit is a normally operated solenoid valve, and the other is a throttle valve, which is normally open. After each water production process of water system 1, i.e., after the inlet solenoid valve 120 and the diaphragm pump 130 are closed, a certain pre-pressure is still maintained in water system 1 because water production has just begun. This causes water to flow out from the normally open flow path of the wastewater solenoid valve 210. After a certain period of time, the pressure of water system 1 will eventually drop to the same level as the external atmospheric pressure. Assuming that the ambient temperature water inlet 14 is in operation, the system will enter the water production mode, i.e., the inlet solenoid valve 120 and the diaphragm pump 130 will be activated. However, since there is no pre-pressure in the system, meaning the water in the pipes has been emptied, the purified water produced by the system fills the internal water circuit before flowing out from the ambient temperature water inlet 14. This results in the water flow received by the user gradually increasing in volume and then maintaining a constant flow after reaching a certain flow rate.

[0045] In the water system 1 provided in this embodiment, when the water system 1 is in water production mode, if any one of the purified water circuits is activated, the inlet solenoid valve 120, the diaphragm pump 130, and the wastewater switch valve 230 will all open until the purified water circuit is closed. The aforementioned purified water circuit includes the unit outlet 13, the ambient temperature water outlet 14, and the outlet of the water replenishment solenoid valve 510. When the water production mode stops, the wastewater switch valve 230 is closed first, and after a preset time, such as 0.5 seconds, the inlet solenoid valve 120 and the diaphragm pump 130 are closed simultaneously. This action allows the system to pre-store a certain amount of water pressure. Simultaneously, since the outlet of the wastewater solenoid valve 210 has a wastewater switch valve 230, and this valve 230 is closed, wastewater cannot flow out through this path. Therefore, the system always maintains a certain pressure. When purified water is drawn next time, the pre-stored pressure water in the system pipeline can flow out, and the purified water produced by the water purification process also flows out simultaneously. This ensures a constant flow of water, thereby improving the user experience.

[0046] like Figure 1 As shown, the lower part of the water tank 400 is connected to the hot water outlet 16, and a hot water solenoid valve 410 is provided between the water tank 400 and the hot water outlet 16; the lower part of the water tank 400 is also connected to the drain outlet 15, and a first manual ball valve 420 and a water receiving box 430 are provided between the water tank 400 and the drain outlet 15 in sequence; the upper part of the water tank 400 is provided with an exhaust port 17, which is connected to the water receiving box 430 and also connected to the atmosphere.

[0047] Specifically, the water tank 400 is a hot water tank, such as... Figure 1 As shown, the hot water tank is equipped with a high water level probe 441, a medium water level probe 442 and a low water level probe 443, as well as an electric heating element 444, a first temperature probe 445, a first thermostat 446, a second thermostat 447 and a second temperature probe 448. The water tank 400 also has a water inlet, a hot water outlet and an exhaust port 17.

[0048] like Figure 1 As shown, the water system 1 also includes a branch circuit. The upstream of the branch circuit is connected between the filter unit 100 and the water tank 400, and the downstream of the branch circuit is connected to the branch port 13. The branch circuit includes a third one-way valve 610, a high-pressure switch 620, and a second manual ball valve 630 arranged in sequence. Specifically, the high-pressure switch 620 has a low pressure value of 0.15 MPa and a high pressure value of 0.25 MPa, and it connects the power supply when the pressure is low and disconnects the power supply when the pressure is high.

[0049] This utility model embodiment also provides a water purifier, which includes a water system 1 as described above. A drainage branch 300 connects the pipe between the filter unit 100 and the water tank 400 to a wastewater branch 200, thereby forming a drainage channel for the purified water pipe. This allows the water stored in the purified water pipe to be discharged through the wastewater branch 200, so as to remove the stored water with excessive bacteria from the water system 1 and improve the water quality within the water system 1.

[0050] While specific embodiments of this utility model have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of this utility model is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of this utility model, but all such changes and modifications fall within the scope of protection of this utility model.

Claims

1. A waterway system of a water purifier, characterized by, The waterway system comprises a filter unit and a water tank, water flows to the water tank after being filtered by the filter unit; The waterway system further comprises a waste water branch and a drainage branch, the waste water branch is communicated with the filter unit and is used for discharging the filtered waste water of the filter unit; The upstream end of the drainage branch is communicated between the filter unit and the water tank, and the downstream end of the drainage branch is communicated with the waste water branch, and the drainage branch is used for discharging the water in the waterway outside the waterway system in the cleaning mode.

2. The waterway system of a water purifier according to claim 1, wherein, The filter unit comprises a CPP composite filter core, an NF filter core and an MPF composite filter core, and the CPP composite filter core, the NF filter core and the MPF composite filter core are arranged in sequence along the water flow direction; The upstream end of the waste water branch is communicated with the NF filter core.

3. The waterway system of a water purifier according to claim 2, wherein The MPF composite filter core and the water tank are further provided with a water supplementing electromagnetic valve, the upstream end of the drainage branch is communicated between the MPF composite filter core and the water supplementing electromagnetic valve, and the drainage branch is provided with a drainage electromagnetic valve.

4. The waterway system of the water purifier according to claim 3, wherein, The drainage branch is further provided with an LED sterilizer, and the LED sterilizer is arranged upstream of the drainage electromagnetic valve.

5. The waterway system of the water purifier according to claim 4, wherein, The LED sterilizer and the drainage electromagnetic valve are provided with a normal temperature water electromagnetic valve and a normal temperature water outlet connected with the normal temperature water electromagnetic valve.

6. The waterway system of the water purifier according to claim 3, wherein, The waste water branch comprises a waste water electromagnetic valve and a waste water switch valve, the waste water electromagnetic valve is arranged upstream of the waste water switch valve, the downstream of the waste water switch valve is connected with a waste water outlet, the downstream of the drainage electromagnetic valve is communicated between the waste water electromagnetic valve and the waste water switch valve, and the waste water electromagnetic valve is a combined electromagnetic valve of an electromagnetic valve and a throttle valve.

7. The waterway system of the water purifier according to claim 6, wherein, The NF filter core and the MPF composite filter core are provided with a first check valve, the waste water electromagnetic valve and the waste water switch valve are provided with a second check valve, the downstream of the drainage electromagnetic valve is provided with a quick-connection check valve, and the water outlet end of the quick-connection check valve is connected between the second check valve and the waste water switch valve.

8. The waterway system of a water purifier according to claim 1, wherein, The lower part of the water tank is connected with a hot water outlet and is provided with a hot water electromagnetic valve between the hot water outlet; The lower part of the water tank is further connected with a drainage outlet and is provided with a first manual ball valve and a water receiving box in sequence between the drainage outlet; The upper part of the water tank is provided with an exhaust outlet, the exhaust outlet is connected with the water receiving box and is connected with the atmosphere.

9. The waterway system of a water purifier according to claim 1, wherein, The waterway system further comprises an extension branch, the upstream of the extension branch is connected between the filter unit and the water tank, and the downstream of the extension branch is connected with an extension outlet; the extension branch comprises a third check valve, a high-pressure switch and a second manual ball valve arranged in sequence.

10. A water purifier characterized by comprising: The water purifier comprises the waterway system of the water purifier according to any one of claims 1-9.

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