Double-shutter roof ventilator

A louver and fan technology, applied in mechanical equipment, machines/engines, liquid fuel engines, etc., can solve problems such as safety accidents, affecting users' use, increasing use costs, etc., to reduce use costs, improve service life, The effect of preventing the entry of foreign objects

CN107630830AInactive Publication Date: 2018-01-26CHENGDU CHANGMING INFORMATION TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2018-01-26
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a double-shutter roof ventilator. The double-shutter roof ventilator comprises a base (1), an air duct (2), an air hood (3) and a main motor (4), wherein the air duct (2) comprises an inner duct (21) and an outer duct (22); the base (1) is provided with a shutter A (7); the air duct (2) is mounted on the base (1); the air hood (3) is mounted on the air duct (2); air outletswhich are distributed uniformly are formed in the side wall of the inner duct (21); the outer duct (22) is provided with an opening corresponding to the inner duct (21); by taking the air outlets andthe opening as two ends, a cylindrical channel (9) is formed; a shutter B (8) is arranged in the channel (9); and a guide plate (10) is arranged at the upper end of the inner duct (21). The double-shutter roof ventilator has the effects of improving the airtightness of the ventilator, prolonging the service life and being simple in structure.
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Description

technical field

[0001] The invention relates to the field of ventilators, in particular to a roof ventilator with double louvers. Background technique

[0002] During the use of the fan, sundries, dust, etc. can easily enter the vent at the bottom of the fan, causing damage to the impeller, failure of the motor, and the impeller flying out and hurting people, causing safety accidents. When the ventilator is not in use, a large amount of dust and rainwater in rainy days will enter the air duct through the air outlet and then enter the channel, which not only affects the service life of the ventilator, but also affects the use of users. The existing roof ventilator is protected by setting Devices are used to solve such problems, but these devices are often complicated in structure, which increases the cost of use. Contents of the invention

[0003] In order to solve the above problems, the present invention proposes a roof ventilator with double louvers.

[0004] Specifica...

Examples

Embodiment Construction

[0013] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation manners of the present invention will now be described with reference to the accompanying drawings.

[0014] Such as figure 1 As shown, a double louver damper double louver roof ventilator is characterized in that it includes a base 1, an air duct 2, a wind cap 3 and a main motor 4, and the inner cylinder 2 includes an inner cylinder 21 and an outer cylinder 22, so The base 1 described above is provided with a louver A7 to prevent foreign matter in the room from entering the ventilator and preventing the impeller from coming off to cause harm. The air cylinder 2 is installed on the base 1, and the air cap 3 is installed on the air cylinder 2; the side wall of the inner cylinder 21 is provided with evenly distributed air outlets, and the outer cylinder 22 is provided with openings corresponding to the inner cylinder, so that the o...