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公开(公告)号：US20230417249A1
公开(公告)日：2023-12-28
申请号：US18244001
申请日：2023-09-08
Applicant: DAIKIN INDUSTRIES, LTD.
Inventor： Tomohiro ISHIBASHI , Zuozhou CHEN , Anan TAKADA , Kaname MARUYAMA
CPC classification number: F04D19/002 , F04D29/384 , F05D2240/304
Abstract: A propeller fan includes a blade configured to rotate around a predetermined rotation axis, and a ring connected to a blade end of the blade. The blade includes a curved portion on a side on which the blade end is located. The curved portion has, in a rotational radial direction of the blade, a cross-sectional shape projecting in a convex manner toward a side on which a pressure surface is located. In the curved portion, when a height from a position of a blade root on a camber line in a direction along the predetermined rotation axis is an axial-direction height and a position at which the axial-direction height becomes maximum in the rotational radial direction is a maximum curve position, the axial-direction height at the maximum curve position is maximum on a side on which a trailing edge of the blade is located.
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公开(公告)号：US20240183358A1
公开(公告)日：2024-06-06
申请号：US18404445
申请日：2024-01-04
Applicant: DAIKIN INDUSTRIES, LTD.
Inventor： Tomohiro ISHIBASHI , Zuozhou CHEN , Kaname MARUYAMA , Anan TAKADA
CPC classification number: F04D19/007 , F04D25/08 , F04D29/38 , F04D29/542
Abstract: A fixed blade has a chord line inclined downstream in a rotation direction of a rotor vane throughout a radial direction. An average of an installation angle on an outer peripheral side of the fixed blade from a midpoint of a straight line extending in the radial direction from an outer peripheral end of an upstream edge of the fixed blade to an outer peripheral surface of the fixed hub is less than an average of the installation angle on an inner peripheral side of the fixed blade from the midpoint of the straight line, where the installation angle is formed by the chord line of the fixed blade with respect to a plane perpendicular to an axis.
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公开(公告)号：US20230228278A1
公开(公告)日：2023-07-20
申请号：US18125573
申请日：2023-03-23
Applicant: DAIKIN INDUSTRIES, LTD.
Inventor： Zuozhou CHEN , Anan TAKADA , Tomohiro ISHIBASHI , Tooru IWATA , Kaname MARUYAMA
CPC classification number: F04D29/325 , F04D19/002
Abstract: A propeller fan includes a hub rotatable about an axis, and a plurality of blades extending radially outward from an outer peripheral surface of the hub. A ring surrounds the plurality of blades and is connected to each blade tip. A maximum camber location is on a camber line where a distance from a chord line to the camber line in an arc-shaped cross section of each blade about the axis is maximum. An axial height is from a trailing edge to the camber line in a direction along the axis. Each blade has a first portion provided inside in the radial direction of rotation and whose axial height at the maximum camber location is substantially constant, and a second portion provided outside in the radial direction of rotation and whose axial height at the maximum camber location increases toward the blade tip.
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公开(公告)号：US20250012247A1
公开(公告)日：2025-01-09
申请号：US18896148
申请日：2024-09-25
Applicant: DAIKIN INDUSTRIES, LTD.
Inventor： Tomomi SAKAMOTO , Naoki YAMAMOTO , Kaname MARUYAMA , Tomohiro ISHIBASHI
Abstract: A water wheel includes a casing to carry a fluid flow through an inside of the casing, a pipe extending in the inside of the casing, a rotor unit having a shaft to be inserted in the inside of the casing, and a support. The shaft is directed toward the pipe. The rotor unit is detachably attached to the casing from outside. The support supports the rotor unit at a predetermined position relative to the pipe when the rotor unit is attached to the casing. A hydraulic power generation device includes the water wheel and a generator driven by the water wheel. A hydraulic power generation system includes the hydraulic power generation device and a flow path with the hydraulic power generation employed in the flow path.
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