Cross flow fan and air-conditioning apparatus including same

摘要

A cross flow fan including an impeller having at least two rings arranged with intervals in a fan rotation axis O direction and a plurality of blades that are arranged, between correlated rings, with intervals in a circumferential direction of the rings, in which the blade is divided into plural areas in the fan rotation axis O direction, and both ends adjacent to the rings are denoted as the blade-ring proximate sections and the center portion of the blade is denoted as the inter-blade-ring center section. The blade is formed such that the thickness of the inner peripheral blade end of the blade that is the inner peripheral end of the impeller is smaller in the inter-blade-ring center section than in the blade-ring proximate section.

主权项

1. A cross flow fan, comprising:
an impeller including,
at least two support plates arranged with intervals in a rotation axis direction, anda plurality of blades arranged between correlated support plates, the blades being arranged with intervals in a circumferential direction of the support plates, wherein each blade between the support plates is divided into a plurality of areas in the rotation axis direction such that both ends adjacent to the support plates are a first area and a center portion of the blade is a second area, a thickness of an inner peripheral blade end is formed such that the second area is smaller in thickness than the first area, an area between the first area and the second area is a third area, and a thickness of the blade in the third area is formed to gradually change in shape from a thickness of the blade in the first area to a thickness of the blade in the second area.