Double-seal roof ventilator

Abstract

The invention discloses a double-seal roof ventilator, which includes an air cap, an air cylinder, a base and a main motor, wherein a plurality of air outlets, cross grooves, raised edges and flanges are formed at the upper part of the air cylinder; each air outlet is communicated with the cross groove connected with the left side of the air outlet; each flange is arranged on the right side of each air outlet; the raised edges are arranged on the upper side and the lower side of each air outlet; a servo motor is fixed on the air cap; a rotary rack is fixed on a rotating shaft of the servo motor; connecting rods on the rotating shaft are inserted in the air outlets in a sleeving manner, and arc baffles are fixed at the top end of the rotary rack; folded edges are formed on the upper side edges, the lower side edges and the left side edges of the baffles; and seal rubber blocks are fixed on the inner sides of the folded edges of the upper side edges and the lower side edges, and are propped against the side wall of the air cylinder, and the inner walls of the seal rubber blocks are contacted with the outer walls of the raised edges. According to the invention, not only is a louver air door arranged at the base to prevent sundries from entering, besides, but also the adjustable baffles are arranged on the air outlets of the ventilator, so that the roof ventilator not in use can be completely sealed.

Description

Technical field: [0001] The invention relates to the technical field of ventilators, in particular to a double-sealed roof ventilator. Background technique: [0002] Existing roof ventilators are composed of wind caps, blowers, bases, motors and impellers. The position of the air outlet of the fan base is easily blocked by sundries or sundries fly into the fan, and the sundries that fly into the roof fan are easily damaged. The impeller may be thrown out by the impeller, which is easy to injure people and cause safety accidents. [0003] Moreover, outdoor rainwater, dust, birds, etc. will enter the inside of the ventilator, especially when not in use, a large amount of dust, and rainwater on rainy days will enter the air duct and enter the channel, which not only affects the service life of the ventilator, but also Affect the user's use, the existing roof ventilation fan is only provided with some louvers at the base of the fan to prevent the entry of sundries, but it does ...

AI Technical Summary

Problems solved by technology

[0002] Existing roof ventilators are composed of wind caps, blowers, bases, motors and impellers. The position of the air outlet of the fan base is easily blocked by sundries or sundries fly into the fan, and the sundries that fly into the roof fan are easily damaged. The impeller may be thrown out by the impeller, which is easy to injure people and cause safety accidents

[0003] Moreover, outdoor rainwater, dust, birds, etc. will enter the inside of the ventilator, especially when not in use, a large amount of dust, and rainwater on rainy days will enter the air duct and enter the channel, which not only affects the service life of the ventilator, but also Affecting the use of users, the existing roof ventilators only set some louvers on the base of the fan to prevent the entry of sundries, but there is no complete sealing device to prevent the entry of dust and rainwater

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