Water purifier and method for preventing increase of TDS value of purified water

Abstract

The invention discloses a water purifier and method for preventing increase of a TDS value of purified water. The water purifier for preventing increase of the TDS value of the purified water comprises a raw water inlet, wherein the raw water inlet is sequentially connected with a first electromagnetic valve and a booster pump; the booster pump is connected with a water inlet end of a RO filter element, and a concentrated water end of the RO filter element is connected with a wastewater discharging opening through a concentrated water electromagnetic valve; and a purified water end of the RO filter element is connected with a check valve and a high-voltage switch, and is then split into two paths, one path is connected with a purified water tank through a second electromagnetic valve, the purified water tank is connected with a water faucet, and the other path is connected with the wastewater discharging opening through a third electromagnetic valve. According to the water purifier and method for preventing increase of the TDS value of the purified water, on the basis of a traditional high-flux water purifier, the purified water tank is added, and the purified water is preserved in the purified water tank, so that when concentrated water in the RO filter element diffuses, the water in the purified water tank cannot be affected.

Description

technical field [0001] The invention belongs to the technical field of water purification equipment, and in particular relates to a water purification machine and a method for preventing the TDS value of pure water from rising. Background technique [0002] The traditional reverse osmosis water purifier, the water production capacity is usually 50 gallons per day, the water production capacity ranges from 400 gallons to 800 gallons, or even more than 1,000 gallons, which are generally called large-flux water purifiers. Large-flux water purifiers are improving At the same time as certain performance, it also brings new problems in terms of hygiene indicators and cost performance, resulting in the problem of "living in water". [0003] At present, the flow channel of the reverse osmosis membrane filter element (RO filter element) is as follows: the raw water enters from one end of the filter element, the raw water is filtered from the outside to the inside, the filtered pure w...

AI Technical Summary

Problems solved by technology

If it diffuses overnight, the TDS value of the pure water in the pure water side will increase significantly. If there are more heavy metal ions in the raw water, the heavy metals in the pure water will also exceed the standard, and the water quality and taste will be greatly affected.

[0004] When the high-throughput water purifier is working, the TDS at the pure water end is in a normal state. When the user stops using it, the concentrated water at the water inlet end of the RO membrane will gradually diffuse to the pure water end, and the diffusion time will start to appear after more than 5 minutes. The water at the pure water end generally depends on the size of the membrane shell, usually about 500-1000ml, which leads to a high TDS value of the first glass of water after restarting work

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