Device capable of reducing TDS value of pure water of free-installation clear water dispenser

Abstract

The invention relates to a device capable of reducing TDS value of pure water of a free-installation clear water dispenser. The device comprises a raw water cup (1), a booster pump (2), a pre-filter element (4), an RO membrane component (5) and a purified water tank (11) connected through a water delivery pipe (A), wherein a high liquid level probe (10) and a low liquid level probe (12) are arranged in the purified water tank; a first TDS probe (3), a second TDS probe (6) and a reversing valve (7) are mounted on the water delivery pipeline; a third TDS probe (13) is mounted at a water outlet of the purified water tank; the first TDS probe, the second TDS probe, the third TDS probe, the booster pump and the reversing valve are connected with an electric control device (16) respectively; and a shutdown timing device (16a) is arranged on the electric control device. In the invention, the data acquired by the three TDS probes are conveyed to the electric control device, and the electric control device controls the on/off state and time of the reversing valve so as to reduce the TDS value of the purified water stored in the purified water tank.

Description

technical field [0001] The invention relates to a device capable of automatically reducing the TDS value of pure water for an installation-free water purifier, and belongs to the technical field of reducing the TDS value of reverse osmosis water dispensers. Background technique [0002] Total dissolved solids (English: Total dissolved solids, abbreviated TDS), also known as total dissolved solids, is measured in milligrams per liter (mg / L), which indicates how many milligrams of dissolved solids are dissolved in 1 liter of water. The higher the TDS value, the more dissolved substances in the water. Total dissolved solids refers to the total amount of all solutes in water, including both inorganic and organic content. Generally, the conductivity value can be used to roughly understand the salt content in the solution. Generally, the higher the conductivity, the higher the salt content, and the higher the TDS. [0003] The installation-free water purification machine is diff...

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Problems solved by technology

[0003] The installation-free water purification machine is different from the traditional water purifier. It is very convenient and convenient to use because it eliminates the need for pipeline installation. This type of installation-free water purification machine uses a raw water cup to hold water. Mixing will increase the salt content and hardware of the mixed water, resulting in shutdown or stopping the water production for a long time without working. After the water production is completed, the remaining high-concentration mixed water soaks the surface of the RO membrane, and the raw water is not used to rinse the surface of the RO membrane in time. The salt in the high-concentration mixed water will have an osmotic effect, and the longer the downtime or stop using the more salt will penetrate, which will directly cause the pure water TDS produced after restarting the machine water to exceed the set standard

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