CN2898696Y

CN2898696Y - Dustproof air exhaust

Info

Publication number: CN2898696Y
Application number: CN 200620078548
Authority: CN
Inventors: 刘荣鑫; 刘小平
Original assignee: Xian Changqing Technology Engineering Co Ltd
Current assignee: Xian Changqing Technology Engineering Co Ltd
Priority date: 2006-03-10
Filing date: 2006-03-10
Publication date: 2007-05-09
Anticipated expiration: 2016-03-10

Abstract

The utility model relates to an air exhaust of ventilation engineering, in particular to a dustproof air exhaust of ventilation engineering in windy and sandy areas. The utility model consists of an air outlet bending pipe and a flange, which is characterized in that the interior of the air outlet bending pipe is connected with dustproof windshields. The interior pipe shell of the air outlet bending pipe is connected with two dustproof windshields, which are fixed in opposite directions at different fore and hind positions on the pipe shell of the air outlet bending pipe. The convex face of the air outlet bending pipes faces the room interior while the concave face the room exterior. The utility model solves the problem that exterior air return via the air exhaust pollutes the interior air in sandy and dusty areas. Additionally, the utility model is convenient to manufacture with low cost and effective in dustproof.

Description

Anti-dust exhaust outlet

Technical field

The utility model relates to a kind of exhaust outlet of ventilating engineering, particularly a kind of anti-dust exhaust outlet of dust storm larger area ventilating engineering.

Background technology

Commonly used to various forms of exhaust outlets in ventilation, with smooth discharge indoor exhaust air, when stopping air draft, stop simultaneously in the pernicious gas inlet chamber such as outdoor sand and dust.Exhaust outlet commonly used has fixing and movable air grille, various forms of air-out bend pipes.Its shortcoming is to utilize existing exhaust outlet when stopping to ventilate, and is bigger as outdoor wind speed, in the easy inlet chamber of sand and dust, pollutes room air.

Summary of the invention

The purpose of this utility model provides a kind of anti-dust exhaust outlet, and to solve the problem of dust storm larger area by the outdoor return air pollution room air of exhaust outlet, it is easily manufactured, and cost is low, and is anti-dust effective.

The purpose of this utility model is achieved in that a kind of anti-dust exhaust outlet of design, and it comprises air-out bend pipe, flange, it is characterized in that: be connected with anti-dust deep bead in the air-out bend pipe.

Described anti-dust deep bead is that upper surface is the arc of projection, and its front and back end also is a circular shape.

Described air-out bend pipe inner tubal wall is connected with two anti-dust deep beads, and two anti-dust deep beads are separately fixed at air-out bend pipe inner tubal wall front and back diverse location, but direction is opposite, and its crowning is towards indoor direction, and concave surface is towards outdoor.

The described anti-dust deep bead that is cross-linked on air-out bend pipe inner tubal wall is the 10-20 degree with the inner tubal wall of air-out bend pipe.

The radian of described anti-dust deep bead upper surface projection is the 5-10 degree.

Described air-out bend pipe is connected with the insect protected silk screen on outdoor outlet(discharge) flange.

Characteristics of the present utility model are: the structure and the installation form that do not change former air-out bend pipe, by in the air-out bend pipe, tilting to install a kind of anti-dust deep bead, it is easily manufactured, cost is low, anti-dust effective, keep IAQ, easy solution the return air by exhaust outlet pollute the problem of room air, can be widely used in the ventilating engineering of dust storm larger area.

Description of drawings

Below in conjunction with example figure the utility model is described further.

Fig. 1 is the example structure schematic diagram;

Fig. 2 is anti-dust deep bead structural representation.

Among the figure: 1, air-out bend pipe; 2, anti-dust deep bead; 3, wind exhausting outlet; 4, air draft inlet.

The specific embodiment

Embodiment 12, two anti-dust deep beads 2 of two anti-dust deep beads are installed are separately fixed at diverse location before and after air-out bend pipe 1 inner tubal wall at air-out bend pipe 1 10 degree that tilt in outdoor inlet, but direction is opposite as shown in Figure 1.As shown in Figure 1, anti-dust deep bead 2 is that upper surface is the arc of protruding radian, and its front and back end also is a circular shape.As shown in Figure 2, anti-dust deep bead 2 tilts to install along airflow direction, because anti-dust deep bead 2 is upper surfaces is the arc of projection, the convex surface radian of embodiment 1 anti-dust deep bead 2 is 10 degree or 5 degree, its crowning is an air draft inlet 4 towards indoor direction, can effectively reduce the gas on-way resistance, concave surface towards outdoor be wind exhausting outlet 3, can make the return air that has sand and dust form eddy current like this at recess, reduce flow velocity, isolate sand and dust, two anti-dust deep bead 2 staggered oppositely installations stop that effectively sand and dust pass through in the exhaust outlet inlet chamber simultaneously.Two of anti-dust deep bead 2 general staggered oppositely installations also can be installed a plurality of according to actual conditions.Silk screen is installed on the flange in exit can be stoped in the inlet chamber such as winged insect.Stop air draft, when outdoor wind speed is big, the return air that has sand and dust enters anti-dust exhaust outlet along wind exhausting outlet 3, because anti-dust deep bead 2 is tilted to outlet, and has certain concave surface radian, make return air form eddy current at the concave surface place, reduce flow velocity, isolate sand and dust, through the effect of two-stage, can stop return air and sand and dust effectively, guarantee IAQ.The material of exhaust outlet can be other materials such as iron sheet.

Embodiment 2 is substantially the same manner as Example 1, difference just tilts 20 to spend three anti-dust deep beads 2 are installed in outdoor inlet at air-out bend pipe 1, the convex surface radian of anti-dust deep bead 2 is 5 degree, the material of exhaust outlet can be other materials such as fiberglass, this scheme is than embodiment 1 cost height, but function, quality are than embodiment the last 1.

Claims

1, anti-dust exhaust outlet, it comprises air-out bend pipe, flange, it is characterized in that: be connected with anti-dust deep bead in the air-out bend pipe.

2, anti-dust exhaust outlet according to claim 1 is characterized in that: described anti-dust deep bead is that upper surface is the arc of projection, and its front and back end also is a circular shape.

3, anti-dust exhaust outlet according to claim 1, it is characterized in that: described air-out bend pipe inner tubal wall is connected with two anti-dust deep beads, two anti-dust deep beads are separately fixed at air-out bend pipe inner tubal wall front and back diverse location, but direction is opposite, its crowning is towards indoor direction, and concave surface is towards outdoor.

4, anti-dust exhaust outlet according to claim 3 is characterized in that: the described anti-dust deep bead that is cross-linked on air-out bend pipe inner tubal wall is the 10-20 degree with the inner tubal wall of air-out bend pipe.

5, anti-dust exhaust outlet according to claim 2 is characterized in that: the radian of described anti-dust deep bead upper surface projection is the 5-10 degree.

6, anti-dust exhaust outlet according to claim 1 is characterized in that: described air-out bend pipe is connected with the insect protected silk screen on outdoor outlet(discharge) flange.