Water purification system, water purifier and control method of water purification system

Abstract

The water purification system comprises a main water path, the main water path comprises a front filter element, a water pump, a reverse osmosis filter element, a first electromagnetic valve, a rear filter element and a high-voltage switch, the water pump is arranged between the front filter element and the reverse osmosis filter element, the first electromagnetic valve is arranged between the reverse osmosis filter element and the rear filter element, and the high-voltage switch is arranged between the front filter element and the rear filter element; the high-pressure switch is connected to the water outlet side of the rear filter element; the flow control water path and the main water path are connected in parallel and connected to the two ends of the first electromagnetic valve, the flow control water path comprises a second electromagnetic valve and a first proportional valve, the second electromagnetic valve is arranged at the front end of the first proportional valve, and the first proportional valve is used for controlling the flow of water. The flow control water path is mounted on the water purification system, so that the conductivity of initial several cups of effluent of the water purifier can be remarkably reduced, and compared with a method of directly discharging wastewater from a reverse osmosis filter element, the water resource utilization rate is effectively improved, and meanwhile, normal effluent cannot be influenced.

Description

technical field [0001] The invention relates to the technical field of drinking water purification, in particular to a water purification system, a water purifier and a control method for the water purification system. Background technique [0002] In order to effectively reduce the problem of high conductivity of the first cup of pure water that flows out when the water purifier starts to use, the pure water supply device installed in the water purifier can use pure water to time the filter device in the water purifier. Flushing is performed to reduce the conductivity of the water accumulated in the filter device, but this method needs to use a considerable amount of water for flushing each time, which causes a certain waste of water resources. [0003] In the prior art, some double reverse osmosis membrane systems are designed to solve the problem of high electrical conductivity of the first cup of pure water, but this solution uses multiple reverse osmosis membrane elemen...

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Problems solved by technology

[0002] In order to effectively reduce the problem of high conductivity of the first cup of pure water that flows out when the water purifier starts to use, the pure water supply device installed in the water purifier can use pure water to time the filter device in the water purifier. Flush to reduce the conductivity of the water accumulated in the filter device, but this method needs to use a considerable amount of water for flushing each time, causing a certain waste of water resources

[0003] In the prior art, some double reverse osmosis membrane systems are designed to solve the problem of high conductivity of the first cup of pure water, but this solution uses multiple reverse osmosis membrane elements, and the manufacturing cost is high

And some have designed a double waterway structure. When the conductivity of the first cup of pure water exceeds the set value, the waterway will switch to a conductivity filtering structure. The filter structure is too large or the life is too short

It has a certain effect on solving the high conductivity of the first cup of pure water, but there is no corresponding mention of the increase in the conductivity of the second and third cups of water. In fact, the second and third cups of water The conductivity will also increase to varying degrees

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