Heat preservation airtight valve suitable for passive low-energy-consumption building fresh air pipeline

Abstract

The invention relates to the field of buildings, in particular to the field of passive low-energy-consumption building fresh air. An airtight shell and a fresh air exhaust pipeline are fixed through a pipeline flange splicing piece, the airtight shell and an air supply and return pipeline are fixed through a pipeline flange splicing piece, the inner portion and the outer portion of the airtight shell are sealed and wrapped by rubber and plastic heat preservation materials, the interior of an airtight clamping groove is filled with a prepressing expansion sealing belt, a small electric engine and a double-layer lifting valve are in linkage through a controlled bolt, a passive low-energy-consumption building is better in indoor heat preservation and air tightness, the heat loss of the building is reduced, and the heat preservation material cost and the construction cost are reduced.

Description

technical field [0001] The invention relates to the field of buildings, in particular to a fresh air system suitable for passive low-energy buildings. Background technique [0002] In order to implement the national sustainable development strategy, my country has introduced the concept of passive low-energy buildings, which has been widely promoted and applied. Passive low-energy buildings have good airtight design, reasonable thermal insulation design and fresh air units with full heat recovery, which can greatly reduce the heating and cooling energy consumption of buildings. However, in passive low-energy buildings, the air tightness of the building is reduced due to the opening of the fresh air outlet and exhaust outlet of the fresh air unit, which allows outdoor cold (hot) air to enter the room, causing serious heat loss. At present, in the construction and design of passive low-energy buildings, in order to reduce the damage of outdoor air to the indoor environment, t...

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to overcome the poor airtightness and thermal insulation of existing airtight valves, and provide a thermal insulation airtight valve suitable for passive low-energy building fresh air pipelines, so as to solve the problem of outdoor fresh air on passive low-energy buildings. The impact of indoor temperature saves the cost of insulation materials and construction costs

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