A zero-chlorine water pipeline and a water purifier with the same

Abstract

This utility model discloses a zero-residue water pipeline and a water purifier incorporating it, belonging to the technical field of water purification equipment. The zero-residue water pipeline is independent of the water production pipeline and can be plugged into it. The zero-residue water pipeline connects to the rear end of the RO filter element in the water production pipeline through its inlet and to the front end of the RO filter element and the rear end of the booster pump through its outlet. The zero-residue water pipeline includes a pure water tank, a control valve, and a pumping device. The pure water tank is equipped with a level detection device. This utility model's zero-residue water pipeline is completely independent of the water production pipeline and can be plugged into the water production pipeline as an independent functional module as needed. It is flexible in use, supports quick replacement, and shortens maintenance time. The independent module works in conjunction with a low-power diaphragm pump, which can greatly reduce energy consumption. The linkage control of the one-way valve and the wastewater solenoid valve can effectively prevent cross-contamination, thereby extending the life of the RO filter element.

Description

Technical Field

[0001] This utility model belongs to the technical field of water purification equipment, and specifically relates to a zero-stagnant water pipeline and a water purifier having the same. Background Technology

[0002] In existing water purifier technology, to achieve the "zero stagnant water" function (i.e., avoiding secondary pollution caused by residual concentrated water in the RO filter), a booster pump is typically used to backflush the RO filter with purified water. However, in this design, the booster pump must participate in the entire rinsing process, resulting in high energy consumption. The rinsing process relies on the high-pressure drive of the booster pump, which can easily cause pump wear and shorten the equipment's lifespan with long-term operation. Some solutions attempt to reduce energy consumption by optimizing pump control logic or adding auxiliary valves, but these still cannot fundamentally solve the problem of high energy consumption.

[0003] Another drawback of existing technology is that existing zero-stagnant water systems mostly rely on booster pumps in the water production pipeline for power, resulting in a strong coupling between the flushing process and the water production function. Furthermore, existing zero-stagnant water modules are mostly deeply integrated with the water production pipeline, lacking independence and flexibility. Maintenance or upgrades require complete disassembly, which is complex and increases costs. Summary of the Invention

[0004] To overcome at least one of the defects described in the prior art, the present invention provides a zero-stagnant water pipeline and a water purifier having the same.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] This utility model provides a zero-stagnant water pipeline, which is independent of the water production pipeline and detachably plugged into the water production pipeline. The zero-stagnant water pipeline is connected to the rear end of the RO filter element in the water production pipeline through the zero-stagnant water pipeline inlet, and connected to the front end of the RO filter element and the rear end of the booster pump in the water production pipeline through the zero-stagnant water pipeline outlet. The zero-stagnant water pipeline includes a pure water tank, a control valve and a water pumping device, and the pure water tank is equipped with a liquid level detection device.

[0007] Furthermore, the zero-stagnant water pipeline also includes a one-way valve for controlling the unidirectional flow of pure water from the outlet of the pure water tank to the outlet of the zero-stagnant water pipeline, and the one-way valve is disposed between the outlet of the pure water tank and the outlet of the zero-stagnant water pipeline.

[0008] Furthermore, the RO filter element is connected to the wastewater drain outlet via a wastewater control valve.

[0009] Furthermore, a flushing branch is connected between the front end of the ambient temperature water outlet solenoid valve of the water production pipeline and the front end of the wastewater outlet, and a flushing control valve and a check valve are installed on the flushing branch.

[0010] Furthermore, a branch line is connected to the front end of the ambient temperature water outlet solenoid valve of the water production pipeline.

[0011] Furthermore, the control valve is located between the inlet of the zero-stagnant water pipeline and the inlet of the pure water tank; the pumping device is located between the outlet of the pure water tank and the outlet of the zero-stagnant water pipeline.

[0012] Furthermore, the control valve is a solenoid valve; the pumping device is a diaphragm pump.

[0013] This utility model also provides a water purifier, which includes the aforementioned zero-stagnant water pipeline.

[0014] Furthermore, a pre-filter is provided at the front end of the booster pump, and a post-filter is provided at the rear end of the intermediate RO filter.

[0015] Furthermore, a refrigeration module is connected in parallel between the front and rear ends of the ambient temperature water outlet solenoid valve in the water production pipeline.

[0016] Furthermore, a heating module pipeline branch is connected to the front end of the ambient temperature water outlet solenoid valve of the water production pipeline.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] This invention features a zero-stagnant water pipeline that is completely independent of the water production pipeline. It can be plugged into the water production pipeline as a standalone functional module as needed, offering flexibility, supporting quick replacement, and shortening maintenance time. The independent module works in conjunction with a low-power diaphragm pump, significantly reducing energy consumption. The coordinated control of the check valve and wastewater solenoid valve effectively prevents cross-contamination, thereby extending the lifespan of the RO filter element. Attached Figure Description

[0019] Figure 1 This is a diagram of the zero-staple water pipeline structure in the embodiment;

[0020] Figure 2 This is a pipeline diagram of a water purifier with a zero-stagnant-water pipeline in the embodiment.

[0021] The diagram shows the following: 1. Zero-stagnant water solenoid valve; 2. Pure water tank; 2-1. Liquid level sensor switch; 2-2. Liquid level float switch; 2-3. Water tank overflow port; 2-4. Check valve; 3. Diaphragm pump; 4. Check valve one; 5. Raw water inlet; 6. Pre-filter; 7. Inlet solenoid valve; 8. Raw water TDS; 9. Booster pump; 10. RO filter; 11. Pure water TDS; 12. Check valve two; 13. Post-filter; 14. Ambient temperature water outlet solenoid valve; 15. Ambient temperature / cold water outlet; 16. Wastewater solenoid valve; 17. Wastewater drain outlet; 18. Flushing solenoid valve; 19. Check valve three; 20. Heating module solenoid valve; 21. Hot water outlet; 22. Cooling module solenoid valve. Detailed Implementation

[0022] The technical solution of this utility model will be described in detail below with reference to the embodiments and accompanying drawings. Contents not explicitly described in the embodiments of this utility model are all prior art, and those skilled in the art can refer to existing conventional technical solutions for implementation.

[0023] This embodiment uses Figure 1 The structure of the zero-cash water pipeline shown is as follows: Figure 2 The following is a detailed explanation using a water purifier piping system with zero-stagnant-water piping as an example. The water purifier piping mainly includes a filtration module, a heating module, a cooling module, and a zero-stagnant-water module. Among them:

[0024] The filtration module is the core module of the water purifier's water pipeline. In this embodiment, it preferably includes a pre-filter 6, an inlet solenoid valve 7, a raw water TDS meter 8, a booster pump 9, an RO filter 10, a pure water TDS meter 11, a second check valve 12, a post-filter 13, and a room temperature water outlet solenoid valve 14. The pre-filter 6 is installed at the front end of the booster pump 9 and is used for preliminary filtration of the raw water. The post-filter 13 is installed at the rear end of the RO filter 10 and is used to improve the taste. When water purification is needed, the inlet solenoid valve 7 is opened, and tap water enters the water purification pipeline from the raw water inlet 5. The raw water, after preliminary filtration by the pre-filter 6, is pressurized by the booster pump and enters the RO filter 10. The pure water flowing out of the RO filter 10 enters the post-filter 13 through the second check valve 12. The pure water, after being purified by the post-filter 13, is then ready for drinking. The wastewater outlet of the RO filter element 10 is connected to the wastewater drain outlet 17 via the wastewater solenoid valve 16. During flushing, the wastewater is discharged through the wastewater solenoid valve 16 and the wastewater drain outlet 17. Opening the ambient temperature water outlet solenoid valve 14 allows water to flow from the ambient temperature / cold water outlet 15.

[0025] The filtration module also includes a regular flushing branch, which is connected between the front end of the ambient temperature water outlet solenoid valve 14 and the front end of the wastewater drain outlet 17. The flushing branch is equipped with a flushing solenoid valve 18 and a one-way valve 19 for periodically flushing the RO membrane.

[0026] The heating module is used to provide high-temperature water. In this embodiment, a branch pipe is preferably led out from the front end of the ambient temperature water outlet solenoid valve 14. The specific structure and implementation of the heating module can be achieved by existing technology, and will not be described in detail here. A heating module solenoid valve 20 is provided at the front end of the heating module's branch pipe. Opening the heating module solenoid valve 20 allows water to flow out from the hot water outlet 21.

[0027] The refrigeration module is used to provide low-temperature water. In this embodiment, a branch pipeline is preferably connected in parallel between the front and rear ends of the ambient temperature water outlet solenoid valve 14. The specific structure and implementation of the refrigeration module can be achieved by existing technology, and will not be described in detail here. A refrigeration module solenoid valve 22 is provided at the front end of the refrigeration module. Opening the refrigeration module solenoid valve 22 allows water to flow from the ambient temperature / cold water outlet 15.

[0028] To enable multi-terminal water supply, a branch line of the pipeline can be connected to the front end of the ambient temperature water outlet solenoid valve 14.

[0029] The preferred piping structure for zero-stagnant water modules is as follows: Figure 1 As shown, it includes a control valve, a pure water tank, a pumping device, and a check valve. The zero-cash water pipeline is independent of the water production pipeline. It can be plugged into the water production pipeline as needed and connected to the water production pipeline via a quick-connect method. During maintenance, the module can be directly disassembled without disassembling the entire machine.

[0030] Specifically, the zero-residue water pipeline is connected to the rear end of the RO filter element 10 in the water purification pipeline through the zero-residue water pipeline inlet. In this embodiment, it is preferably connected to the pipeline between the one-way valve 12 and the post-filter element 13. Alternatively, the zero-residue water pipeline inlet can be connected to the rear end of the post-filter element 13 after the RO filter element 10 to achieve simultaneous flushing of the post-filter element 13. However, since the post-filter element 13 usually does not have a strong flushing requirement, in order to maximize energy saving and consumption reduction, this embodiment preferably connects the zero-residue water pipeline inlet to the front end of the post-filter element 13. The zero-residue water pipeline is connected to the front end of the RO filter element 10 and the rear end of the booster pump 9 through the zero-residue water pipeline outlet.

[0031] Specifically, the control valve is used to control the opening and closing of pure water flowing into the pure water tank 2, and is preferably installed on the pipeline between the inlet of the zero-stagnant water pipeline and the inlet of the pure water tank. Any valve assembly that can achieve this opening and closing function can be used to achieve the purpose of this utility model. This embodiment only uses the most commonly used solenoid valve as an example for explanation. The zero-stagnant water solenoid valve 1 is installed between the inlet of the zero-stagnant water pipeline (connected to the pure water outlet side of the RO filter element) and the inlet of the pure water tank.

[0032] Specifically, the pure water tank 2 is used to store the pure water required for zero-staple water rinsing, and includes a pure water tank inlet and a pure water tank outlet. The pure water tank is equipped with a level detection device for detecting the water level in the tank, such as a level float switch 2-2. In this embodiment, a level sensing switch 2-1 is preferably added to the level float switch 2-2 as a backup level detection device when the level float switch 2-2 fails. The top of the water tank is provided with a water tank overflow port 2-3.

[0033] Specifically, the pumping device is used to extract pure water from the pure water tank 2, and is preferably installed on the pipeline between the outlet of the pure water tank and the outlet of the zero-stagnant water pipeline. Since the pure water tank 2 itself provides a certain water pressure, when flushing is required, the booster pump 9 in the original water production pipeline is turned off, and the flushing function can be achieved simply by using the low-power pumping device. In this embodiment, the pumping device is a diaphragm pump 3. Compared with the traditional solution of using a booster pump located at the front end of the RO filter to send pure water to the front end of the RO filter, the diaphragm pump 3 can reduce the flushing energy consumption by about 40% and has less noise.

[0034] Specifically, the one-way valve 4 is used to ensure that pure water flows in one direction to the front end of the RO filter element 10 and prevent backflow. The one-way valve 4 is preferably installed in the pipeline between the diaphragm pump 3 and the outlet of the zero stale water pipeline.

[0035] This embodiment preferably achieves the zero-staple water rinsing function by following these steps:

[0036] When zero-stagnant water flushing is required, open the zero-stagnant water solenoid valve 1. The pure water produced by the water production pipeline flows from the rear end of the RO filter element 10 into the pure water tank 2 through the zero-stagnant water pipeline inlet. When the preset maximum water level is reached, close the zero-stagnant water solenoid valve 1; turn off the booster pump 9 and stop the operation of the water production pipeline; start the diaphragm pump 3 to pump water. The pure water stored in the pure water tank 2 is transported to the front end of the RO filter element 10 through the one-way valve 4; the pure water flushes the membrane surface from the front end of the RO filter element to remove residual concentrated water; the wastewater generated during flushing is discharged from the system through the wastewater solenoid valve 16 and the wastewater drain outlet 17; after flushing is completed, close the zero-stagnant water solenoid valve 1 and the diaphragm pump 3; when water production is required, restart the booster pump 9 to resume the water production process.

[0037] The above embodiments are merely typical implementations of this utility model and are not intended to limit the scope of this utility model. All equivalent substitutions or improvements made within the scope of the claims of this utility model are protected by this utility model.

Claims

1. A zero-stagnant water pipeline, characterized in that, The zero-stagnant water pipeline is independent of the water production pipeline and is detachably plugged into the water production pipeline. The zero-stagnant water pipeline is connected to the rear end of the RO filter element in the water production pipeline through the zero-stagnant water pipeline inlet, and connected to the front end of the RO filter element and the rear end of the booster pump in the water production pipeline through the zero-stagnant water pipeline outlet. The zero-stagnant water pipeline includes a pure water tank, a control valve and a water pumping device. The pure water tank is equipped with a liquid level detection device.

2. The zero-stagnant water pipeline according to claim 1, characterized in that, The zero-stagnant water pipeline also includes a one-way valve for controlling the unidirectional flow of pure water from the outlet of the pure water tank to the outlet of the zero-stagnant water pipeline. The one-way valve is located between the outlet of the pure water tank and the outlet of the zero-stagnant water pipeline.

3. A zero-stagnant water pipeline according to claim 1 or 2, characterized in that, The RO filter element is connected to the wastewater outlet via a wastewater control valve.

4. A zero-stagnant water pipeline according to claim 3, characterized in that, A flushing branch is connected between the front end of the ambient temperature water outlet solenoid valve of the water production pipeline and the front end of the wastewater outlet. A flushing control valve and a check valve are installed on the flushing branch.

5. A zero-stagnant water pipeline according to claim 1, characterized in that, A branch line is connected to the front end of the solenoid valve for the ambient temperature water outlet in the water production pipeline.

6. A zero-stagnant water pipeline according to claim 1, characterized in that, The control valve is located between the inlet of the zero-staple water pipeline and the inlet of the pure water tank; the pumping device is located between the outlet of the pure water tank and the outlet of the zero-staple water pipeline.

7. A zero-stagnant water pipeline according to claim 1 or 6, characterized in that, The control valve is a solenoid valve; the pumping device is a diaphragm pump.

8. A water purifier, characterized in that, Includes the zero-stagnant water pipeline as described in any one of claims 1 to 7.

9. A water purifier according to claim 8, characterized in that, The water purifier's booster pump has a pre-filter at the front end and a post-filter at the rear end of the RO filter.

10. A water purifier according to claim 8, characterized in that, A refrigeration module is connected in parallel between the front and rear ends of the ambient temperature water outlet solenoid valve in the water production pipeline; a heating module pipeline branch is connected to the front end of the ambient temperature water outlet solenoid valve in the water production pipeline.

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