Impeller of axial-flow type heated-air circulation fan

Abstract

The invention relates to an impeller of an axial-flow type heated-air circulation fan, which comprises an annular hub of which the center is provided with a conical shaft hole, wherein a plurality of blades are uniformly arranged on the outer wall of the annular hub along the annular direction, the root parts of the blades are fixed with the outer wall of the annular hub, a reinforcement blade is respectively arranged at the root part of the leeward side of each blade, the root parts of the reinforcement blades are fixed with the outer wall of the annular hub, wherein the annular hub structurally comprises an annular hub body and a shaft seat which is arranged in the center of the hub body, the shaft seat is connected with the hub body through a plurality of connection rods, a first closed cover and a second closed cover are respectively arranged in the two side end surfaces of the hub body, holes are respectively arranged at the centers of the first closed cover and the second closed cover, and the two ends of the shaft seat are respectively arranged in the holes. The impeller is suitable for the axial-flow type heated-air circulation fan.

Description

technical field [0001] The invention relates to the technical field of fans, in particular to an impeller of an axial-flow hot air circulation fan. Background technique [0002] The impeller is one of the main components of the axial-flow hot air circulation fan, which can realize the stirring function of the hot air, and can effectively improve the uniformity of the temperature in the industrial heat treatment furnace and the quality of the heat treatment workpiece. The structure of the impeller of the currently used axial-flow hot air circulation fan includes: an annular hub with a tapered shaft hole in the center, a number of blades are evenly arranged on the outer wall of the annular hub, and the roots of the blades are in contact with the outer wall of the annular hub. Fixed, wherein the structure of the ring-shaped hub includes a ring-shaped hub body and an axle seat arranged in the center of the hub body, and the axle seat and the hub body are connected by several con...

AI Technical Summary

Problems solved by technology

The axial-flow hot air circulation fan using the above-mentioned impeller is only suitable for small heat treatment furnaces with low air pressure, small air volume, and low furnace temperature. The hubs are fixed only by the contact surface between the root of the blade and the outer wall of the annular hub, so that the blade is easily deformed under the impact of high wind pressure, large air volume, and high furnace temperature, and in severe cases, the blade will break. ;In addition, because the ring hub is a hollow structure, the dust and sediment in the gas in the furnace will accumulate in the ring hub, which will destroy the balance of the impeller rotation and cause the fan to vibrate, so that the deviation of the total pressure value at the specified air volume will increase. , the efficiency of the fan is reduced, and the noise of the fan is increased

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