Rain and snow preventing type parallel air flue type ventilator

Abstract

The invention discloses a rain and snow preventing type parallel air flue type ventilator. The rain and snow preventing type parallel air flue type ventilator comprises a plurality of parallel air flue frameworks and an outer protecting plate, upper, middle and lower three-layer inclined rain-proof plates are connected among the multiple parallel air flue frameworks, every two adjacent layers of rain-proof plates are opposite in inclined direction, the multiple rain-proof plates located on the same layer are arranged in parallel to form parallel air flues, and the rain-proof plates on the middle layer and the rain-proof plates on the lower layer are arranged in a staggered manner; a middle suspension valve plate is hinged to the position, located between every two adjacent upper-layer rain-proof plates, on each parallel air flue framework through a valve plate supporting frame and is connected with an opening and closing device; each parallel air flue is divided into two air flue bodies after the corresponding middle suspension valve plate is completely opened; each parallel air flue is isolated from the outside after the corresponding middle suspension valve plate is completely closed; and upper, middle and lower three-layer ditches are evenly arranged among the multiple parallel air flue frameworks. The ventilator is good in ventilation performance, good in rain-proof and snow-proof effect and capable of avoiding rainwater backward flowing and seepage and winter internal snow accumulation and melted snow seepage.

Description

technical field [0001] The invention relates to building environment energy-saving technologies, in particular to a rain and snow-proof parallel air duct ventilator. Background technique [0002] The parallel duct ventilator of the national standard reference atlas 11CJ33 comes from Chinese patents CN 201866883U, CN102269460A, etc., among which CN 201866883U states that its performance "can achieve an effective ventilation area greater than 80% of the roof opening", while the spaced duct ventilator only It is "within 40%", indicating that the parallel air duct structure has very superior ventilation performance advantages. However, the subsequent invention CN103206762A completely negates the rain-proof function of the above-mentioned patent, and explains in the background: "Through the test of practice, the rain-proof effect of the side-by-side air duct ventilator is not very ideal, especially in heavy rain weather, rainwater The flow velocity is too fast, and the existing ...

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Problems solved by technology

However, the subsequent invention CN103206762A completely negates the rainproof function of the above-mentioned patent, and explains in the background: "Through the test of practice, the rainproof effect of the side-by-side air duct type ventilator is not very satisfactory, especially in heavy rain weather, rainwater The flow velocity is too fast, and the existing structure can't effectively defend, dredge, collect and discharge rainwater at all", but in terms of technical solution, the invention CN103206762A simply sets "convex ribs" on the rainproof plate to slow down the flow velocity of rainwater

Because "excessive rainwater flow velocity" is not the main reason why the side-by-side air duct ventilator cannot prevent rainwater, the above-mentioned technical scheme does not solve the problem of "effective defense, dredging, collection and removal of rainwater", and the described "Close the opening and closing device for waterproofing" is a scheme that cannot determine the prerequisites for use, and closing the ventilation and rainproofing does not meet the technical requirements for sheltered natural ventilation

[0003] Parallel air duct ventilators cannot prevent rain, which is an invalid technology. No matter how high the ventilation performance is, it is untenable. The rainproof problem of the structure of the above patent has always existed but has not been completely solved. The main reason is the rainproof of the parallel air duct structure. Insufficient understanding of the problem

The above-mentioned structures all form ventilation shielding and blocking of the parallel air ducts to varying degrees, and cannot form a perfect and effective roof natural ventilation technology, let alone guarantee the ventilation performance advantage of the parallel air duct structure with a large effective ventilation area.

[0006] In addition, the side-by-side duct type ventilator also has the problems that the solid-belly skeleton plate affects the lighting function and lacks the guarantee of installation strength

Since the valve plate of the side-by-side duct type ventilator is set at the bottom, the dust accumulated on the valve plate cannot be cleaned and affects the lighting function. There is a danger that the valve plate cannot be maintained and repaired, damaged and dropped into the room, and the condensation on the valve plate directly drips into the room.

[0007] In terms of product cost, the side-by-side ducted ventilator still has the problem of low skeleton plate combined skeleton strength and lack of overall skeleton strength for guarantee and foundation installation. The product combination installation also needs to design a large number of foundation structures to increase the construction cost.

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