Exhaust fan structure of livestock pen

Abstract

An exhausting fan used in the pinfold. On the body of the fan a buffering face which can absorb the shock made by the high speed rotation is formed by moulding. On the blade of the fan a curved face is formed by moulding to increase the endurance of the fan blade and make fan lightened, also can minimize the air resistance to prevent from the noise and increase the efficiency of blasting and exhausting by changing the direction of the air.

Description

technical field [0001] The present invention relates to an exhaust fan provided for circulating indoor air in livestock pens, etc., and particularly relates to the structure of an exhaust fan for livestock pens. It is injection-molded, and forms a curved surface on the blade of the fan that changes the direction of air flow, and the curved surface is also injection-molded, which improves the durability of the blade while achieving light weight, and when driven by the fan of the exhaust fan. When performing air supply and exhaust, minimize the air impedance caused by air supply and exhaust, thereby suppressing the noise of the exhaust fan caused by air impedance, and by changing the air flow direction of the curved surface, improve the air supply and ventilation in the livestock pen. Exhaust efficiency. Background technique [0002] Generally speaking, livestock pens are commonly used to raise cattle, pigs, or chickens. However, such livestock pens have a very serious stench...

AI Technical Summary

Problems solved by technology

[0005] However, the blades of the fans used in the conventional exhaust fans are thicker for the life and durability of the blades, and are made into a flat plate. Therefore, there is a disadvantage that the weight of the blades is large, and thus the load is increased. The noise is serious, which makes the livestock nervous, and brings the disadvantage of excessive power consumption

[0006] In addition, because the fan blades of the existing fans are made into flat plates, the airflow generated around them collides with the flat surface of the fan blades to cause noise.

[0007] Moreover, the main body of the existing exhaust fan has a flat shape fixed on the ceiling or wall by screws, etc., and does not have a buffer. Therefore, when the blade of the fan rotates at a high speed, the vibration caused by the rotational force is transmitted to the exhaust fan. On the main body, thus, the fixed state of the main body of the above-mentioned exhaust fan is not strong, so it brings inconvenience of needing continuous management

[0008] In addition, the center of gravity of the rotating shaft of the existing exhaust fan is not correctly aligned with the center of rotation, so there is a disadvantage that vibration occurs when the exhaust fan is working, and the service life of the exhaust fan is shortened.

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