Cross-flow and centrifugal hybrid type fan

Abstract

The invention discloses a cross-flow and centrifugal hybrid type fan and relates to fans. The cross-flow and centrifugal hybrid type fan comprises a base part and an impeller part. During the operation of the hybrid type fan, a motor drives the impeller of the impeller part to rotate, part of air flow entering the inner cavity of the impeller is accelerated in the flowing process penetrating the cross-flow section of the impeller, and the part of air flow is decelerated and pressurized in the inner cavity of a cross-flow volute to generate high-pressure air flow; the other part of air flow entering the inner cavity of the impeller flows into an impeller centrifugal section along the axial direction, the air flow enters the inner cavity of a centrifugal volute from the blade duct of the impeller centrifugal section under the effect of centrifugal force, and the air flow is decelerated and pressurized in the inner cavity of the centrifugal volute to generate high-pressure air flow; the pressure of the air flow discharged by the inner cavity of the centrifugal volute is larger than that of the air flow discharged by the inner cavity of the cross-flow volute, and the overall output airflow pressure of the hybrid type fan is increased. The hybrid type fan is unlimited by axial length, large in output air flow pressure and high in efficiency.

Description

technical field [0001] The invention relates to a cross-flow centrifugal hybrid fan, which relates to a fan, in particular to a hybrid fan with both a cross-flow fan structure and a centrifugal fan structure. Background technique [0002] The types of fans commonly used in home appliances include axial fans, cross-flow fans, and centrifugal fans. Its typical application product examples are vertical fans using axial fans, range hoods using centrifugal fans, and indoor units of air conditioners using cross-flow fans. Axial flow fans are characterized by large flow, low pressure, and high noise. The structure of the axial flow fan is simple. [0003] The cross-flow fan is characterized by moderate flow, moderate pressure and low noise. The axial length of the cross-flow fan is not limited, and the airflow at the air outlet is evenly distributed along the axial direction of the cross-flow fan. Compared with the axial flow fan, the airflow of the cross-flow fan flows through...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the disadvantages of large pressure loss and low efficiency of ordinary cross-flow fans, as well as the limitation of the axial length of ordinary centrifugal fans, and provide a fan with unrestricted axial length and relatively high output airflow pressure. , higher efficiency cross-flow centrifugal hybrid fan

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