A medical multi-effect distilled water machine

Abstract

The invention discloses a medical multi-effect water distiller. The medical multi-effect water distiller comprises a preheater, a cooler and a plurality of film rising type evaporators. A raw water inlet is connected with a refrigerant inlet of the preheater. A refrigerant outlet of the preheater is communicated with a raw water inlet of the first-effect film rising type evaporator, a liquid phase outlet of the previous-effect film rising type evaporator is communicated with a raw water inlet of the next-effect evaporator through a raw water pipeline, and a gas phase outlet of the previous-effect film rising type evaporator is communicated with a steam inlet of the next-effect film rising type evaporator through a steam pipeline. Condensate outlets of the second-effect film rising type evaporator and the subsequent effect film rising type evaporators are communicated with a heating medium inlet of the preheater. A heating medium outlet of the preheater is communicated with a heating medium inlet of the cooler. A heating medium outlet of the cooler is communicated with a distilled water storage tank. Waste heat produced by the medical multi-effect water distiller is fully utilized for preheating the raw water, the raw water is used for cooling distilled water out of the evaporators, and therefore energy consumption is reduced.

Description

technical field [0001] The invention belongs to the technical field of medical devices, and mainly relates to a water distiller, in particular to a medical multi-effect distilled water machine. Background technique [0002] Distilled water machine is a common equipment for producing medical distilled water. The distilled water machine is connected in series by multiple evaporators, and the distilled water produced can be used as medical water for injection. [0003] The existing distilled water machines are connected in series by multi-effect evaporators, and each school evaporator needs to be equipped with a separate raw material water preheater. After being transferred to raw water, it becomes condensed water, which also contains heat that is not fully utilized, resulting in a waste of energy. In addition, the structure of the evaporator is mostly the upper part of the water distribution falling film evaporation, and the lower part is a steam-water separation structure, an...

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Problems solved by technology

[0003] The existing distilled water machines are connected in series by multi-effect evaporators, and each school evaporator needs to be equipped with a separate raw material water preheater. After being transferred to raw water, it becomes condensed water, which also contains heat that is not fully utilized, resulting in a waste of energy. In addition, the structure of the evaporator is mostly the upper part of the water distribution falling film evaporation, and the lower part is a steam-water separation structure, and the condensing part connected to the evaporator Each device needs to be equipped with an independent cooling water delivery and circulation system, which leads to a complex structure and an increase in energy consumption, which leads to an increase in the production cost of distilled water

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