A pressure-stabilizing and flow-controlling water circuit system and a water purifier having the same.

Abstract

This utility model discloses a pressure-stabilized flow-controlled water circuit system and a water purifier incorporating it, belonging to the technical field of water purification equipment. The water circuit system includes a booster pump, a filter element assembly, and a distribution valve. The inlet side of the filter element assembly is connected to the outlet side of the booster pump. The pure water outlet side of the filter element assembly is connected in parallel to a room temperature water circuit and a hot water circuit. The wastewater outlet side of the filter element assembly is connected to a wastewater discharge branch. The inlet side of the booster pump is connected to the first outlet of the distribution valve, the raw water inlet is connected to the first inlet of the distribution valve, and the pure water outlet side of the filter element assembly is connected to the second inlet of the distribution valve. The second outlet of the distribution valve is connected to the room temperature water circuit through a flow-controlled branch. This utility model can reduce booster pump stalling by balancing the water pressure on the pure water outlet side of the filter element assembly; simultaneously, by adjusting the flow rate of the room temperature water outlet through the flow-controlled branch equipped with a negative pressure valve, and in conjunction with the hot water circuit, stepless temperature adjustment of the outlet water can be achieved.

Description

Technical Field

[0001] This utility model belongs to the technical field of water purification equipment, specifically relating to a pressure-stabilized and flow-controlled water circuit system and a water purifier having the same. Background Technology

[0002] Existing water purifier systems typically have a booster pump on the inlet side of the filter assembly, such as before the RO filter or composite filter. When the outlet flow rate of the filter assembly is less than the rated flow rate, the booster pump on the inlet side is prone to stalling. In this state, although the booster pump is still powered on, the motor is under severe overload, which may lead to abnormal wear and damage to the booster pump, resulting in a high failure rate and shortened machine lifespan. Furthermore, existing water purifier systems cannot simultaneously control the flow rate of room temperature and hot water, making it difficult to meet users' temperature adjustment needs. When the machine is shut down or water production is stopped for an extended period, concentrated water (stale water) can easily remain in the RO filter, leading to secondary pollution. Additionally, the initial lead content in the effluent may exceed the standard, affecting water safety. Utility Model Content

[0003] To overcome at least one of the defects described in the prior art, this utility model provides a pressure-stabilized flow-controlled water circuit system and a water purifier having the same.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A pressure-stabilizing and flow-controlling water circuit system includes a booster pump, a filter element assembly, and a distribution valve. The inlet side of the filter element assembly is connected to the outlet side of the booster pump. The pure water outlet side of the filter element assembly is connected in parallel to a room temperature water circuit and a hot water circuit. The wastewater outlet side of the filter element assembly is connected to a wastewater discharge branch. The inlet side of the booster pump is connected to the first outlet of the distribution valve. The raw water inlet is connected to the first inlet of the distribution valve. The pure water outlet side of the filter element assembly is connected to the second inlet of the distribution valve. The second outlet of the distribution valve is connected to the room temperature water circuit through a flow-controlling branch.

[0006] Furthermore, the flow control branch includes a negative pressure valve and a normal temperature water pump.

[0007] Furthermore, the outlet sides of both the ambient temperature water circuit and the hot water circuit are connected to a faucet.

[0008] Furthermore, the pure water outlet side of the filter element assembly is connected to the inlet side of the booster pump via a zero-stagnant water branch, which includes a reflux solenoid valve and a first check valve.

[0009] Furthermore, the pure water outlet side of the filter element assembly is connected to the wastewater discharge branch via a flushing branch, which includes a drain solenoid valve and a second check valve.

[0010] Furthermore, the ambient temperature water circuit includes an ambient temperature water solenoid valve, a third check valve, and a flow meter.

[0011] Furthermore, the hot water circuit includes a heating element water supply valve, a heating element, and a hot water pump. The heating element is connected to an exhaust pipe, which is connected to a faucet via a water vapor separator.

[0012] Furthermore, the filter element assembly includes a composite filter element, which includes an RO membrane.

[0013] Furthermore, the filter element assembly has a pipeline branch connected to the pure water outlet side, and the pipeline branch includes a fourth check valve and a high-pressure switch.

[0014] A water purifier, the water purifier comprising the above-mentioned pressure-stabilized and flow-controlled water circuit system.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] This invention employs a two-inlet, two-outlet distribution valve in the water system. The first outlet of the distribution valve is connected to the inlet side of the booster pump, the first inlet of the distribution valve is connected to the raw water inlet, and the second inlet of the distribution valve is connected to the pure water outlet side of the filter element assembly. The second outlet of the distribution valve is connected to the ambient temperature water circuit through a flow control branch equipped with a negative pressure valve. This structural design can, on the one hand, balance the water pressure on the pure water outlet side of the filter element assembly to form a circulation loop, maintaining the normal operation of the pump without overload; on the other hand, the flow control branch equipped with a negative pressure valve can regulate the flow rate of the ambient temperature water, and in conjunction with the hot water circuit, stepless temperature adjustment of the outlet water can be achieved. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of a pressure-stabilized and flow-controlled water circuit system according to an embodiment.

[0018] The diagram shows the following markings: 1-Inlet solenoid valve; 2-Distribution valve; 3-Booster pump; 4-Composite filter element; 5-Wastewater solenoid valve; 6-Pure water TDS; 7-Return solenoid valve; 8-First check valve; 9-Drain solenoid valve; 10-Second check valve; 11-Negative pressure valve; 12-Ambient temperature water pump; 13-Ambient temperature water solenoid valve; 14-Third check valve; 15-Flow meter; 16-Heating tank water supply valve; 17-Heating tank; 18-Hot water pump; 19-Faucet; 20-Fourth check valve. Detailed Implementation

[0019] The present invention will now be described in further detail with reference to the accompanying drawings.

[0020] This embodiment provides a pressure-stabilizing and flow-controlling water circuit system for use in a water purifier, such as... Figure 1As shown, the water system mainly includes a filtration module, a normal temperature water circuit, a hot water circuit, a wastewater circuit, a diversion module, a flow control branch, a zero-stagnant water branch, a flushing branch, and a pipeline branch.

[0021] The core component of the filtration module is the filter element. In this embodiment, a composite filter element 4 is preferably used, which includes pre-filter PP cotton, carbon fiber and polyamide, RO membrane, and post-filter granular activated carbon. The composite filter element 4 includes a water inlet, a pure water outlet, and a wastewater outlet. The water inlet of the composite filter element is connected to the outlet side of the booster pump 3, and the wastewater outlet of the composite filter element is connected to the wastewater discharge branch. A wastewater solenoid valve 5 is installed on the wastewater discharge branch, and wastewater is discharged from the wastewater outlet.

[0022] The composite filter element 4 has a pure water outlet with a pure water TDS 6 and is connected in parallel to a room temperature water circuit and a hot water circuit. In this embodiment, the room temperature water circuit includes a room temperature water solenoid valve 13, a third one-way valve 14, and a flow meter 15, while the hot water circuit includes a heating element water supply valve 16, a heating element 17, and a hot water pump 18. Both the room temperature water circuit and the hot water circuit are connected to a faucet 19, which is preferably a smart electronic display faucet. A vent pipe is connected to the heating element 17, and the vent pipe is connected to the faucet 19 via a water vapor separation accessory (such as a water vapor separation box).

[0023] The core component of the diversion module is the distribution valve 2. In this embodiment, a commercially available distribution valve is used. This distribution valve 2 is a two-inlet, two-outlet distribution valve. The first inlet of the distribution valve 2 is connected to the raw water inlet through the inlet solenoid valve 1. The first outlet of the distribution valve 2 is connected to the inlet side of the booster pump 3. The second inlet of the distribution valve 2 is connected to the pure water outlet of the composite filter element 4. The second outlet of the distribution valve 2 is connected to the flow control branch. Through this structural design, the pressure on the outlet side of the composite filter element 4 can be dynamically balanced, preventing the booster pump 3 from becoming blocked.

[0024] The flow control branch includes a negative pressure valve 11 and a normal temperature water pump 12. The outlet of the normal temperature water pump 12 is connected to the rear end of the third one-way valve 14 and the front end of the flow meter 15 in the normal temperature water circuit. The flow control branch can precisely adjust the flow rate of the normal temperature water and work with the hot water circuit to achieve continuous adjustment of the water temperature at the faucet 19.

[0025] The zero-residue water branch is connected to the pure water outlet of the composite filter element 4, and includes a reflux solenoid valve 7 and a first one-way valve 8. The zero-residue water branch is also connected to the inlet of the booster pump. When the machine is stopped or water production is interrupted for an extended period, the residual concentrated water in the composite filter element is flushed through the zero-residue water branch to prevent secondary contamination.

[0026] The flushing branch is connected to the pure water outlet of the composite filter element 4, and includes a drain solenoid valve 9 and a second check valve 2. The flushing branch is also connected to the wastewater discharge branch. During the initial startup of the water purifier, the flushing branch is used to guide high-lead water into the wastewater discharge branch to ensure the safety of the discharged water.

[0027] The pure water outlet side of the composite filter element 4 can be extended with a pipeline branch, including a fourth one-way valve 20 and a high-pressure switch 21. The pipeline branch is connected to the pipeline port to meet the water supply needs of multiple terminals.

[0028] During operation, raw water enters the first inlet of distribution valve 2 via inlet solenoid valve 1. The first outlet of distribution valve 2 is connected to the inlet side of booster pump 3. Booster pump 3 delivers pressurized water to the inlet side of composite filter element 4. Filtered pure water is output from the pure water outlet side, and wastewater is discharged via wastewater solenoid valve 5. In the ambient temperature water circuit, pure water flows sequentially through ambient temperature solenoid valve 13, third check valve 14, and flow meter 15 to faucet 19. Simultaneously, the flow control branch containing negative pressure valve 11 and ambient temperature water pump 12 controls the flow rate of the ambient temperature water circuit. In the hot water circuit, pure water enters the heating tank 17 via heating tank makeup valve 16, is pressurized by hot water pump 18, and then delivered to faucet 19 via fourth check valve 20. The exhaust pipe is connected to faucet 19 via a water vapor separator accessory to exhaust steam. Faucet 19 mixes ambient temperature water and hot water and outputs water at the required temperature. In the zero-stagnant water branch, pure water flows back to the inlet side of booster pump 3 via return solenoid valve 7 and first check valve 8. In the flushing branch, water is introduced into the wastewater branch via the drain solenoid valve 9 and the second check valve 10. When zero-staple water flushing is required, the return solenoid valve 7 is activated, and pure water flows back to the inlet side of the composite filter element. Upon restart, water with a high lead content is preferentially discharged through the flushing branch.

[0029] 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 pressure-stabilized and flow-controlled water system, characterized in that, The system includes a booster pump, a filter element assembly, and a distribution valve. The inlet side of the filter element assembly is connected to the outlet side of the booster pump. The pure water outlet side of the filter element assembly is connected in parallel to a room temperature water circuit and a hot water circuit. The wastewater outlet side of the filter element assembly is connected to a wastewater discharge branch. The inlet side of the booster pump is connected to the first outlet of the distribution valve, the raw water inlet is connected to the first inlet of the distribution valve, the pure water outlet side of the filter element assembly is connected to the second inlet of the distribution valve, and the second outlet of the distribution valve is connected to the room temperature water circuit through a flow control branch.

2. The pressure-stabilizing and flow-controlling water system according to claim 1, characterized in that, The flow control branch includes a negative pressure valve and a normal temperature water pump.

3. The pressure-stabilized and flow-controlled water system according to claim 1, characterized in that, Both the ambient temperature water circuit and the hot water circuit have their outlets connected to faucets.

4. The pressure-stabilizing and flow-controlling water system according to claim 1, characterized in that, The pure water outlet side of the filter assembly is connected to the inlet side of the booster pump via a zero-stagnant water branch, which includes a reflux solenoid valve and a first check valve.

5. A pressure-stabilizing and flow-controlling water system according to claim 1, characterized in that, The pure water outlet side of the filter element assembly is connected to the wastewater discharge branch via a flushing branch, which includes a drain solenoid valve and a second check valve.

6. A pressure-stabilizing and flow-controlling water system according to claim 1, characterized in that, The ambient temperature water circuit includes an ambient temperature water solenoid valve, a third check valve, and a flow meter.

7. A pressure-stabilized and flow-controlled water system according to claim 1, characterized in that, The hot water circuit includes a heating element water supply valve, a heating element, and a hot water pump. The heating element is connected to an exhaust pipe, which is connected to a faucet via a water vapor separator.

8. A pressure-stabilized and flow-controlled water system according to claim 1, characterized in that, The filter assembly includes a composite filter element, and the composite filter element includes an RO membrane.

9. A pressure-stabilizing and flow-controlling water system according to claim 1, characterized in that, The filter element assembly is connected to a pipeline branch on the pure water outlet side, and the pipeline branch includes a fourth check valve and a high-pressure switch.

10. A water purifier, characterized in that, Includes the pressure-stabilized flow-controlled water system as described in any one of claims 1 to 9.

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