Mitsubishi Heavy Industries Limited

Mitsubishi Heavy Industries Automotive Thermal Systems Co., Ltd.

Kazuyuki Kamiya

Atsushi Suzuki

Tsuyoshi Eguchi

Tetsuo Tominaga

Asuka Soya

Takayuki Kobayashi

Yasuhiro Watanabe

Tomohiko Shibata

Junichiro Hara

Kenichi Terauchi

Yuuko Enya

Takahisa Hirano

A centrifugal blower includes a centrifugal fan; an electric motor that rotationally drives the centrifugal fan; a fan case that has an air inlet and an air outlet and that internally accommodates the centrifugal fan; and an electric motor case () that has a cylinder () accommodating the electric motor and a flange portion () extending radially outward from the cylinder () and that is fitted to the fan case. The flange portion () is provided with a ring-shaped rib portion () that protrudes from the flange portion (); the ring-shaped rib portion () is provided with a plurality of slits (and) that extend from the flange portion () in the axial direction of the cylinder (); and the flange portion () between the ring-shaped rib portion () and the cylinder () is inclined in a circumferential direction toward the slits (and).

Centrifugal blower and vehicle air conditioner provided with the same

Provided is a propeller fan that can prevent deformation of the propeller fan while maintaining the basic performance thereof, such as the air blowing performance, efficiency, and noise performance. In a plastic propeller fan including a hub and a plurality of blades integrally molded in a radial pattern on the outer circumference of the hub, assuming that the radial size of each blade from the base to the outer peripheral edge is 100, a ring member that joins the plurality of blades together is provided at a dimension position of 5 to 45 from the outer peripheral edge.

Propeller fan

The present invention provides a fan motor capable of achieving both an improvement in a self cooling function of the fan motor and a reduction in fan noise, and of preventing the occurrence of heat damage, problems, and the like caused by external radiation heat and by self-heating, fan noise, and deterioration in fan performance and in fan efficiency. The fan motor () includes: a shroud (); a motor () secured to and supported at the shroud (); an axial-flow fan () connected to a rotation shaft part of the motor (); and a heat shield panel () mounted at the rear side of the motor () with a gap being provided therebetween, in which the heat shield panel () has a spatula-shaped air guiding part () projecting outward in a radial direction at least one location on an outer circumference portion; and the air guiding part () has a width gradually reducing toward an outer side and a fan-rotational-direction leading edge part () having an arc shape.

Fan motor

A shroud includes a body portionB, a mountpositioned at a center of the body portionB and supporting rotary vane wheel driver, and multiple support beamsradially extending from the mountand joining the mountand the body portionB, where each of the support beamsbecomes thicker from an upstream side of a flow direction of air toward a downstream side thereof, and an edge portionof each of the support beamson the downstream side of the flow direction of the air discharged by the rotary vane wheelis oriented in a direction parallel to a rotation axis of the rotary vane wheel, and the edge portion on the upstream side is oriented in a direction opposite to a rotation direction of the rotary vane wheel

Shroud and rotary vane wheel of propeller fan and propeller fan

A shroud includes a body portionB, a mountpositioned at a center of the body portionB and supporting rotary vane wheel driver, and multiple support beamsradially extending from the mountand joining the mountand the body portionB, where each of the support beamsbecomes thicker from an upstream side of a flow direction of air toward a downstream side thereof, and an edge portionti of each of the support beamson the downstream side of the flow direction of the air discharged by the rotary vane wheelis oriented in a direction parallel to a rotation axis of the rotary vane wheel, and the edge portion on the upstream side is oriented in a direction opposite to a rotation direction of the rotary vane wheel

There is provided a propeller fan in which a clearance between a rotary vane wheel and a shroud is constant three-dimensionally to improve air blowing efficiency and suppress noise. Furthermore, there is provided a propeller fan in which a span length of the rotary vane wheel with respect to the shroud is varied between a front edge portion and a rear edge portion to improve air blowing efficiency and suppress noise. Still further, there is provided a propeller fan characterized in that chamfering is applied only to a negative pressure face of a circumferential outer edge portion of a vane.

Growing community of inventors

Aichi, Japan

Kazuyuki Kamiya