A low-resistance wind-proof, rain-proof wind/smoke exhaust device

Abstract

The invention relates to a low-resistance windproof and rainproof air / smoke exhaust device which comprises a fan, as well as a horizontal vent pipe and a vertical vent pipe that are connected with an air outlet side of the fan, wherein a gradual reducer pipe is arranged at a connecting part between an air outlet of the fan and the horizontal vent pipe; a narrow end of the gradual reducer pipe is connected with the air outlet of the fan; a wide end of the gradual reducer pipe is connected with one end of the horizontal vent pipe; the other end of the horizontal vent pipe is connected with the vertical vent pipe via a 90-degree elbow; a roundabout drainage trench is formed in a lower side wall of the horizontal vent pipe and consists of a trench body and a plurality of inclined guide plates; the inclined guide plates are connected in a Z shape or obliquely distributed in the trench body in a Z-shaped manner; strip water outlet slots are formed in a side wall, at connecting parts of the guide plates, of the drainage trench; the length of the horizontal vent pipe is 2.2-2.8 times the diameter of the fan; and the height from the plane of the horizontal pipe to the highest point of the vertical vent pipe is 2.5-3.5m. The device has the prominent characteristics of avoidance of cutting-out of an air flow, simple pipeline members, and low resistance coefficient.

Description

Technical field [0001] The invention relates to a low-resistance wind-proof and rain-proof exhaust / smoke device, which is applied to roofs or outdoor environments with restricted plane dimensions. It belongs to the technical field of indoor air conditioning equipment. technical background [0002] In order to ensure the safety and reliability of the mechanical smoke control system and the cleanness and sanitation of the fresh air system, the current national fire protection, HVAC codes, technical measures, design manuals, etc. all provide protection to the air inlet and exhaust of the mechanical smoke control, smoke exhaust system, new and exhaust system Mandatory provisions are made for the distance between the openings, such as: "Code for Design of Building Fire Protection" GB 50016-2006 Article 9.4.7, "Practical Heating and Air-Conditioning Design Manual" (Second Edition) Article 9.3.2, "National Civil Building Engineering Design Technical Measures" HVAC·Power (2009 Edition) ...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the air exhaust and smoke exhaust devices of the prior art, which are easily disturbed by the outdoor wind direction and wind speed, which affects the exhaust effect or easily guides the airflow to flow downward, resulting in actual airflow short circuit, There are defects of potential safety hazards, and a low-resistance windproof, rainproof, wind / smoke exhaust device is provided, which has the characteristics of avoiding air short circuit, simple pipeline components, and low resistance coefficient

Images