Simple-structure exhaust air waste heat recovery energy-saving device

Abstract

The invention discloses a simple-structure exhaust air waste heat recovery energy-saving device. The simple-structure exhaust air waste heat recovery energy-saving device comprises an exhaust air inlet, an exhaust fan, an exhaust air dividing box, an exhaust air runner, an exhaust air collecting box, a plurality of holes, an exhaust air outlet and a door body; the door body is internally providedwith the exhaust air dividing box, the exhaust air runner and the exhaust air collecting box; the two ends of the exhaust air runner are provided with the exhaust air dividing box and the exhaust aircollecting box correspondingly; the upper side wall of the exhaust air dividing box and the lower side wall of the exhaust air collecting box are both provided with the multiple holes, and the exhaustair dividing box and the exhaust air collecting box both communicate with the exhaust air runner through the holes; and the side wall of the exhaust air dividing box is provided with the exhaust airinlet communicating with the surface of the door body. Compared with the prior art, the simple-structure exhaust air waste heat recovery energy-saving device is simple in structure, easy to maintain,long in service life and low in cost and operation expense, the ventilation and air exchange effect can be achieved, exhaust air waste heat can be sufficiently utilized, the heat insulation performance of an external door can be improved, and meanwhile, the indoor heat comfort can be improved.

Description

【Technical field】 [0001] The invention relates to an exhaust air waste heat recovery type energy-saving device with simple structure. The utility model belongs to the application field of building energy conservation. 【Background technique】 [0002] Although the exterior door of the building has a small area, its thermal insulation performance will also affect the energy consumption of the building. my country's "Design Standards for Energy Conservation of Public Buildings" GB50189-2015 clearly requires that "exterior doors of buildings in hot summer and cold winter, hot summer and warm winter and mild areas should adopt thermal insulation measures", "Design Standards for Energy Conservation of Residential Buildings in Hot Summer and Cold Winter Areas" JGJ134 -2010 clearly requires that the heat transfer coefficient of the door leading to the closed space must not be greater than 3W / (m 2 ﹒ K), the heat transfer coefficient of the door leading to the non-enclosed space or o...

AI Technical Summary

Problems solved by technology

However, due to the installation of a full-heat heat exchanger, the price is expensive, and the air resistance and fan energy consumption increase

The total heat exchange efficiency of the total heat heat exchanger is generally about 60%, and the heat exchange efficiency will drop significantly as the use time increases

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