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公开(公告)号：US12104614B1
公开(公告)日：2024-10-01
申请号：US18604004
申请日：2024-03-13
发明人： Ching Chan
CPC分类号： F04D29/34 , F04D19/002 , F04D29/329
摘要： The invention employs blades featuring multiple holes. The metal decoration for coupling conceals perforated sections, which ease the mounting and alignment for screws installation. The blade holder incorporates two or more slots for screws to slide through the decoration cover, securing the blade assembly onto the fan motor for assembly and operation. The decoration cover has a minimum of two holes for alignment screw installation and one hole for preassembling and fastening it onto the blade. Alignment screws serve a dual purpose by sliding into the blade holder's slots and installing the blade assembly. This not only aligns the blade holder but also temporarily holds the assembly, freeing the installer's hands for subsequent installation steps. This simplifies the process, minimizes installer fatigue and allowing the use of both hands to handle screws, making it a time-efficient and straightforward task. The installation difficulty then reduces from 9 to 1.
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公开(公告)号：US12092121B2
公开(公告)日：2024-09-17
申请号：US17909873
申请日：2021-03-04
申请人： Cofimco S.r.l.
发明人： Carlo Gallina , Emanuele Torno , Alberto Manassa
CPC分类号： F04D25/08 , F04D25/088 , F04D29/34 , F04D29/384 , F04D29/388
摘要： Described herein is a blade system (10) for fans for industrial use, comprising: —a blade (12), which extends longitudinally along a first reference axis (K) and defines within it a cavity (12A), wherein said blade has a cross section with flattened profile and is oriented with a major dimension (L1) along a second reference axis (H); and—a supporting unit (14), on which said blade (12) is fixed and which is inserted within the cavity (12A) of said blade, said supporting unit (14) being designed to be connected to the rotor (2) of a fan. The system is characterized in that: said cavity (12A) of said blade (12) has a cylindrical conformation and a cross section with flattened profile and is oriented with its major dimension (L2) along said second reference axis (H); and said supporting unit (14) comprises a tubular bar (16), which has a cross section with flattened profile and is oriented with a major dimension (L3) along said second reference axis (H), or else a first tubular bar (26A) and a second tubular bar (26C) with circular cross section, which are arranged alongside one another along said second reference axis (H).
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公开(公告)号：US12078183B2
公开(公告)日：2024-09-03
申请号：US17631961
申请日：2020-09-24
CPC分类号： F04D25/088 , F04D25/06 , F04D27/008 , F04D29/34
摘要： A fan blade includes a blade body blowing air and a root portion secured to a support part. A first end part of a fall prevention member is attached to a first mount portion provided in the support part, and a second end part of the fall prevention member is attached to a second mount portion provided in the blade body. A controller controls electric energization to a DC motor to cause the fan blade to stop rotating when the fan blade breaks, the blade body is retained by the fall prevention member, the blade body is tilted, and at least one of a current value or a rotation speed measured by a measurer changes from a predetermined value.
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公开(公告)号：US20240271629A1
公开(公告)日：2024-08-15
申请号：US18432478
申请日：2024-02-05
发明人： Mark Gajewski , Alexander Ostrovsky
CPC分类号： F04D25/088 , F04D29/005 , F04D29/023 , F04D29/34 , F04D29/38 , F21V33/0096 , F21Y2115/10
摘要： Apparatus and methods for circulating air. The apparatus may include a ceiling fan and may include a light fixture. A motor assembly may drive the fan about a rotational axis. Blades of the fan may be fixed to an outer ring of a blade bracket. Blades may extend away from the outer ring. The blade bracket may also include a translucent blade support to which the outer ring may be fixed. The translucent blade support may be disc shaped. A blade holder adapter may fix an inner portion of the translucent blade support to the ceiling fan. The fan may be configured such that a portion of the translucent blade support may provide a view unobscured by the translucent blade support so that there may be at least partial visibility of a visible element, such as a structure, above the translucent blade support from below the apparatus.
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公开(公告)号：US20240141916A1
公开(公告)日：2024-05-02
申请号：US18322553
申请日：2023-05-23
申请人： HOTECK INC.
发明人： WEN-HAI HUANG , CHIA-WEI CHANG , MIN-YUAN HSIAO
CPC分类号： F04D29/34 , F04D25/06 , F04D29/325
摘要： A ceiling fan and a structure thereof are provided. The structure includes a blade holder, a plurality of blades, and a plurality of positioning elements. The blade holder includes a holder body and a plurality of support platforms. The holder body has a plurality of first matching structures spaced apart from each other. Each of the support platforms includes a first positioning structure. Each of the blades has a second matching structure and a second positioning structure. The second matching structures can be guided by the first matching structures, so that each of the blades is disposed at an installation position on one of the support platforms along an oblique track. When each of the blades is located at the installation position, the first positioning structures and the second positioning structures abut against each other.
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公开(公告)号：US11965522B2
公开(公告)日：2024-04-23
申请号：US17586786
申请日：2022-01-28
发明人： Pei-Han Chiu , Chien-Ming Lee , Chung-Yuan Tsang , Chao-Fu Yang
CPC分类号： F04D29/34 , F04D29/384 , F04D29/66
摘要： An impeller includes a hub and a plurality of blades. The blades are arranged around the hub, and each blade includes a leading edge, a blade tip, a root portion, a trailing edge, a windward side and a leeward side. The windward side including a first turning point and a second turning point, a first vertical height difference is formed from the blade tip to the first turning point, and a second vertical height difference is formed from the first turning point to the second turning point, and the first vertical height difference is greater than the second vertical height difference. The impeller apparently reduces the noise.
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公开(公告)号：US20240117812A1
公开(公告)日：2024-04-11
申请号：US17963369
申请日：2022-10-11
申请人： Emory Joseph Clark , Jeff Bendio
发明人： Emory Joseph Clark , Jeff Bendio
CPC分类号： F04D29/388 , F04D19/002 , F04D25/088 , F04D25/166 , F04D29/34 , F04D29/386
摘要： An apparatus for moving air radially outwardly from a rotational axis of a rotating vane provides an air scoop fixed to a ceiling facing surface of a fan vane, the air scoop having a motor end portion, a discharge end portion, a leading edge portion, a trailing edge portion, a fan vane facing surface, an opposing surface, and the air scoop defines a pitched plenum between the fan vane facing surface and an adjacent surface of the fan vane and a vertical distance between the leading edge portion of the air scoop and the leading edge portion of the fan vane is larger than a vertical distance between the trailing edge portion of the air scoop and the trailing edge portion of the fan vane.
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公开(公告)号：US20240093696A1
公开(公告)日：2024-03-21
申请号：US18368476
申请日：2023-09-14
发明人： Digambar Satappa Killedar , Arshad Abdul Quader Shaikh , Juan Kennedy , Ilya Igorevich Burdukov , Suraj Vitthal Kumbhar , Nikhil Vinayak Desai
CPC分类号： F04D29/34 , F04D19/002 , F04D29/263 , F04D29/326 , F04D29/522 , F04D29/542
摘要： A mixed flow inline fan assembly includes an outer housing, a motor assembly disposed within the outer housing, a fan wheel disposed within the outer housing, where a shaft of the motor assembly is coupled to the fan wheel, and the fan wheel includes a hub, a plurality of blades coupled to the hub via first mechanical fasteners, and a shroud coupled to the plurality of blades via second mechanical fasteners
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公开(公告)号：US11885348B2
公开(公告)日：2024-01-30
申请号：US17438075
申请日：2020-03-16
CPC分类号： F04D29/34 , F01D5/146 , F04D19/002
摘要： The invention relates to a blade assembly 30 for a large dimension axial fan 32 having a rotation axis X. The blade assembly of the invention comprises: a root structure 34 intended to mechanically connect the blade assembly to a hub 36; a blade, wherein at least one portion of the blade has a composite airfoil 46 comprising a fore semi-airfoil 48 and an aft flap 50, wherein: the semi-airfoil is intended to be assembled at a predefined pitch angle αc with respect to the hub 36 by means of the root structure; the flap 50 is mounted on the blade such that it can be fixed in a position comprised between a maximum deflection position and a minimum deflection position with respect to the pitch angle αc; and between the fore semi-airfoil and the aft flap a channel 54 is defined suitable for allowing a fluid flow from the face v to the back d of the composite airfoil. The invention further relates to a fan comprising a plurality of blades.
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公开(公告)号：US11852160B2
公开(公告)日：2023-12-26
申请号：US17971925
申请日：2022-10-24
申请人： DELTA T, LLC
CPC分类号： F04D29/34 , F04D19/002 , F04D25/088 , F04D29/388
摘要： A fan includes a motor, a rotatable hub coupled to the motor, and at least one fan blade. The at least one fan blade includes a first end coupled to the rotatable hub, a second end, a leading edge, a trailing edge, a passage extending from the first end to the second end, and a winglet attached to the second end. At least one flexible strap extends through the passage of the at least one fan blade. The flexible strap is coupled at a first end to the rotatable hub and coupled at a second end to the winglet, such as to an inner portion thereof within the passage.
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