CN217300969U

CN217300969U - Roof fan

Info

Publication number: CN217300969U
Application number: CN202220541938.4U
Authority: CN
Inventors: 蔡元博; 何明明
Original assignee: Hubei Province Bao Shuo Technology Co ltd
Current assignee: Hubei Province Bao Shuo Technology Co ltd
Priority date: 2022-03-11
Filing date: 2022-03-11
Publication date: 2022-08-26
Anticipated expiration: 2032-03-11

Abstract

The utility model provides a roof fan belongs to ventilation system technical field. Including the casing, including a motor, an end cap, a controller, and a cover plate, the casing includes the installation end and is located the sealed end of direction of installation end top, the sealed end of direction is the awl tube-shape that the upper end diameter is less than the lower extreme diameter, the outer lane and the sealed end adaptation of direction of cover plate, the casing of motor is fixed inside the sealed end of direction through a plurality of fretwork boards, the impeller is fixed on the output shaft of motor, be provided with a cylinder on the casing of motor, the cylinder body of cylinder is fixed on the casing of motor, the push rod and the protection cover of cylinder are fixed continuous. The utility model has the advantages of the aperture of strong weatherability, air-out passageway can be adjusted.

Description

Roof fan

Technical Field

The utility model belongs to the technical field of ventilation system, a roof fan is related to.

Background

Roof fan is used for taking a breath and adjusting of indoor outer air, and roof fan is outdoor under the installation, and it is great to receive the climate influence, and traditional roof fan's air outlet is in normally open state, and the air current transversely discharges in the protection casing outside, when weather such as heavy rainfall, strong wind, can greatly increased exhaust resistance, and has the circumstances such as air current backward flow and rainwater backward flow, causes the inside corruption and the damage of constructing of roof fan. The strong external wind disturbs the exhaust, which causes the increase of exhaust noise, therefore, the weather resistance of the roof fan is especially important.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a roof fan to the above-mentioned problem that prior art exists, the utility model aims to solve the technical problem that how to improve roof fan's weatherability.

The purpose of the utility model can be realized by the following technical proposal: the utility model provides a roof fan, its characterized in that, includes casing, motor, impeller and protection casing, the casing includes the installation end and is located the sealed end of direction of installation end top, the sealed end of direction is the awl tube-shape that the upper end diameter is less than the lower extreme diameter, the outer lane and the sealed end adaptation of direction of protection casing, the casing of motor is fixed inside the sealed end of direction through a plurality of fretwork boards, the impeller is fixed on the output shaft of motor, be provided with a cylinder on the casing of motor, the cylinder body of cylinder is fixed on the casing of motor, the push rod and the protection casing of cylinder are fixed continuous.

Through the longitudinal position of cylinder control protection casing, can adjust the size of the air-out passageway that forms between the outer lane of protection casing and the sealed end of direction, also can directly close this air-out passageway, can select the size of the air-out passageway that corresponds according to the intensity of airing exhaust, can also close this air-out passageway when the fan is idle, avoid the outside air backward flow.

When severe weather such as strong wind, heavy rainfall and the like is encountered, the air outlet channel can be closed to prevent rainwater from entering the casing and prevent external airflow from pouring into the casing.

The decurrent exhaust air current of slope through forming between the outer lane of sealed end of direction and protection casing, the exhaust air current is less relatively to the resistance that forms between rainwater and the air current, because the rainwater is vertical downwards roughly, external air current is relieved at the level roughly, and this scheme can reduce the exhaust resistance.

Drawings

Fig. 1 is a schematic structural view of the roof fan in an open state of an air outlet channel.

Fig. 2 is a schematic structural view of the roof fan in a state where an air outlet channel is closed.

In the figure, 1, a housing; 2. a motor; 3. an impeller; 4. a protective cover; 5. a leading seal end; 6. and a cylinder.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1 and 2, the roof fan includes a housing 1, a motor 2, an impeller 3 and a protective cover 4, the housing 1 includes a mounting end and a guide sealing end 5 located above the mounting end, the guide sealing end 5 is in a cone shape with an upper end diameter smaller than a lower end diameter, an outer ring of the protective cover 4 is matched with the guide sealing end 5, a housing of the motor 2 is fixed inside the guide sealing end 5 through a plurality of hollow plates, the impeller 3 is fixed on an output shaft of the motor 2, a cylinder 6 is arranged on the housing of the motor 2, a cylinder body of the cylinder 6 is fixed on the housing of the motor 2, and a push rod of the cylinder 6 is fixedly connected with the protective cover 4.

The longitudinal position of the protective cover 4 is controlled through the air cylinder 6, the size of an air outlet channel formed between the outer ring of the protective cover 4 and the guide sealing end 5 can be adjusted, the air outlet channel can also be directly closed, the size of the corresponding air outlet channel can be selected according to the air exhaust intensity, the air outlet channel can also be closed when the fan is idle, and the backflow of external air is avoided.

When severe weather such as strong wind, heavy rainfall and the like occurs, the air outlet channel can be closed to prevent rainwater from entering the casing 1 and prevent external airflow from entering the casing 1.

Through the downward exhaust air current of slope that forms between the outer lane of sealed end 5 of direction and protection casing 4, the resistance that exhaust air current formed between to rainwater and the air current is less relatively, because the rainwater is vertical downwards roughly, and external air current is generally relieved at the level, and this scheme can reduce the exhaust resistance.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. The utility model provides a roof fan, its characterized in that, includes casing (1), motor (2), impeller (3) and protection casing (4), casing (1) is including installation end and direction sealing end (5) that are located the installation end top, direction sealing end (5) are the awl tube-shape that the upper end diameter is less than the lower extreme diameter, the outer lane and the sealed end (5) adaptation of direction of protection casing (4), the casing of motor (2) is fixed inside direction sealing end (5) through a plurality of fretwork boards, impeller (3) are fixed on the output shaft of motor (2), be provided with a cylinder (6) on the casing of motor (2), the cylinder body of cylinder (6) is fixed on the casing of motor (2), the push rod and the protection casing (4) of cylinder (6) are fixed and are linked to each other.