Reverse inclined air curtain type air exhaust cabinet

Abstract

The invention relates to a reverse inclined air curtain type air exhaust cabinet. The front side of the bottom plate of an operation cabinet is provided with a long air blow end, and the long air blow end upwards jets an air jet stream in the direction inclined to the rear plate of the operation cabinet at an inclined angle; the space above the bottom plate is provided with an air suction cover capable of moving upwards and downwards relative to the operation cabinet, and the air suction cover is provided with a long air exhaust end; the long air exhaust end is parallel to the long air blow end and shifts for a distance from the space right above the long air blow end to the direction of the rear plate of the operation cabinet; when the long air suction end sucks the air and the long air blow end blows the air, an inclined air curtain capable of flowing from bottom to top can be formed so as to prevent pollutants from leaking, enhance the capability of resisting the ambient rough air and reduce the dynamic leakage amount of the pollutants; an air suction port can move to the position quite near a pollution source through the design of regulating the height by moving the air suction cover upwards and downwards; and the pollutants surrounded among the inclined single air curtain, the rear plate of the operation cabinet, a left side plate and a right side plate are eliminated in a mode of relatively saving power energy.

Description

technical field [0001] The present invention relates to an exhaust cabinet, in particular to a gas dynamics principle to form an oblique air curtain in the operation cabinet to eliminate the exhaust gas enclosed by the oblique single air curtain and the rear panel, left panel and Reverse sloped air curtain hood for contaminants between right side panels. Background technique [0002] The extraction method of the traditional exhaust cabinet is to set up an opening shutter on the upper end of the gas cabinet, and erect a deflector with a specially designed opening at the rear of the cabinet, and pass the harmful gas in the cabinet through the exhaust device and the duct. The opening of the upper shutter and the opening of the deflector at the rear of the cabinet are drawn out. When using the exhaust cabinet, the suction device must be running to perform the pumping action. At this time, the door of the gas cabinet cannot be completely closed or an air inlet must be reserved u...

AI Technical Summary

Problems solved by technology

However, in actual use, because the air curtain exists at the interface of the cabinet door opening, human actions or the influence of disturbing air flow caused by other external environments will still cause some doubts about the leakage of the contaminated gas in the cabinet, such as When the position of the pollution source release is too high or the operator's hand must be lifted too close to the blowing source of the double cabinet door, there will be cases where the internal space of the operation cabinet cannot accommodate, the suction must be greatly increased, and the pollutants will be blown along the operation. The problem of hand leakage

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