Fans having fan blade mounting structures are disclosed herein. A fan configured in accordance with one embodiment of the present technology includes a fan having a central hub coupled to a plurality of fan blades by a plurality of blade mounting structures. Each blade mounting structure can include
Fans having fan blade mounting structures are disclosed herein. A fan configured in accordance with one embodiment of the present technology includes a fan having a central hub coupled to a plurality of fan blades by a plurality of blade mounting structures. Each blade mounting structure can include first and lower support members that each extend toward an inboard end portion of an individual fan blade. Each of the upper and lower support members can include a first end portion coupled to the inboard end portion of the fan blade. Each of the upper and lower support members can also include a second end portion coupled to opposite sides of the central hub.
대표청구항▼
1. A fan, comprising: a central hub having a top side and a bottom side opposite the top side;a plurality of fan blades, wherein each of the fan blades has an inboard end portion spaced apart from a tip portion; anda plurality of blade mounting structures, wherein each of the blade mounting structur
1. A fan, comprising: a central hub having a top side and a bottom side opposite the top side;a plurality of fan blades, wherein each of the fan blades has an inboard end portion spaced apart from a tip portion; anda plurality of blade mounting structures, wherein each of the blade mounting structures couples a corresponding one of the fan blades to the central hub, and wherein each of the blade mounting structures includes— a strut having a first portion and a second portion, wherein the second portion of the strut is inserted into the corresponding fan blade:a first support member having a first end portion coupled to the central hub proximate the top side and a second end portion coupled to the first portion of the strut; anda second support member having a first end portion coupled to the central hub proximate the bottom side and a second end portion coupled to the first portion of the strut, wherein the first end portion of the first support member is spaced apart from the first end portion of the second support member to define a space therebetween, and wherein the central hub is disposed in the space between the first end portion of the first support member and the first end portion of the second support member. 2. The fan of claim 1 wherein the first portion of the strut is sandwiched between the first and second support members. 3. The fan of claim 1 wherein the first and second support members are vertically spaced apart from one another. 4. The fan of claim 1 wherein the central hub includes: a first hub plate; anda second hub plate spaced apart from the first hub plate,wherein the first support member is attached to the first hub plate, and wherein the second support member is attached to the second hub plate. 5. The fan of claim 1 wherein the first support member of each of the blade mounting structures has generally the same shape and size as the second support member, and wherein the first and second supports members of each of the blade mounting structures are generally symmetric about a longitudinal axis of the fan blade. 6. A fan, comprising: a central hub having a top side and a bottom side opposite the top side;a plurality of fan blades, wherein each of the fan blades has an inboard end portion spaced apart from a tip portion, and wherein each of the fan blades further includes a cavity extending along a longitudinal axis; anda plurality of blade mounting structures, wherein each of the blade mounting structures extends at least partially into the cavity of a corresponding one of the fan blades and couples the corresponding fan blade to the central hub, and wherein each of the blade mounting structures includes— a first support member having a first end portion coupled to the central hub proximate the top side and a second end portion coupled to the inboard end portion of the corresponding fan blade; anda second support member having a first end portion coupled to the central hub proximate the bottom side and a second end portion coupled to the inboard end portion of the corresponding fan blade, wherein the first end portion of the first support member is spaced apart from the first end portion of the second support member to define a space therebetween, and wherein the central hub is disposed in the space between the first end portion of the first support member and the first end portion of the second support member. 7. The fan of claim 6 wherein each of the blade mounting structures includes a spacer sandwiched between the first and second support members, and wherein the spacer is at least partially disposed within the cavity. 8. The fan of claim 6 wherein: the first support member includes at least one spacer portion; andthe second support member includes at least one spacer portion. 9. The fan of claim 8 where the at least one spacer portion of the first support member is attached to the at least one spacer portion of the second support member. 10. A fan, comprising: a central hub having a too side, a bottom side opposite the top side, and a drive shaft opening extending therethrough;a first retention member attached to the central hub and at least partially surrounding the drive shaft opening, wherein the first retention member includes a first flange;a drive unit mount;at least two second retention members attached to the drive unit mount, wherein each of the second retention members at least partially surrounds the drive shaft opening, and wherein each of the second retention members includes a second flange that extends between the central hub and the first flange of the first retention member;a plurality of fan blades, wherein each of the fan blades has an inboard end portion spaced apart from a tip portion; anda plurality of blade mounting structures, wherein each of the blade mounting structures couples a corresponding one of the fan blades to the central hub, and wherein each of the blade mounting structures includes— a first support member having a first end portion coupled to the central hub proximate the top side and a second end portion coupled to the inboard end portion of the corresponding fan blade; anda second support member having a first end portion coupled to the central hub proximate the bottom side and a second end portion coupled to the inboard end portion of the corresponding fan blade, wherein the first end portion of the first support member is spaced apart from the first end portion of the second support member to define a space therebetween, and wherein the central hub is disposed in the space between the first end portion of the first support member and the first end portion of the second support member. 11. The fan of claim 10 wherein the blade mounting structure further includes a strut, the strut having: a first portion attached to the first and second support members; anda second portion attached to the inboard end portion of the fan blade. 12. The fan of claim 10 wherein the first flange is an outward flange and the second flange is an inward flange. 13. The fan of claim 10 wherein the first flange extends in a first direction and the second flange extends in a second direction, opposite to the first direction. 14. A fan, comprising: a central hub having a top side and a bottom side opposite the top side, wherein the central hub includes a drive shaft opening extending therethrough;a plurality of fan blades, wherein each of the fan blades has an inboard end portion spaced apart from a tip portion;a plurality of blade mounting structures, wherein each of the blade mounting structures couples a corresponding one of the fan blades to the central hub, and wherein each of the blade mounting structures includes— a first support member having a first end portion coupled to the central hub proximate the top side and a second end portion coupled to the inboard end portion of the corresponding fan blade, wherein the first support member further includes an inward lip integrally formed with the first support member, and wherein the inward lip extends radially toward the shaft opening; anda second support member having a first end portion coupled to the central hub proximate the bottom side and a second end portion coupled to the inboard end portion of the corresponding fan blade;a drive unit mount; andat least one retention member attached to the drive unit mount and at least partially surrounding the drive shaft opening, wherein the at least one retention member includes an outward flange, and wherein the outward flange extends between the central hub and the inward lip of the first support member. 15. The fan of claim 14 wherein the inward lip of the first support member is aligned with a longitudinal axis of the first support member. 16. A fan comprising: a drive unit having a drive shaft;a drive unit mount carrying the drive unit; anda central hub coupled to the drive shaft;means for holding the central hub to the drive unit mount in the event that the central hub becomes decoupled from the drive shaft,a plurality of fan blades, wherein each fan blade has an inboard end portion spaced apart from the central hub and a tip portion spaced apart from the inboard end portion; andmeans for coupling each of the fan blades to the central hub, wherein the means for coupling includes— an upper support member having a first end portion coupled to the central hub and a second end portion coupled to a corresponding one of the fan blades; anda lower support member having a first end portion coupled to the central hub and a second end portion coupled to the corresponding one of the fan blades, wherein the central hub is positioned between the first end portion of the upper support member and the first end portion of the lower support member. 17. The fan of claim 16, further comprising means for spacing the upper support member apart from the lower support member. 18. The fan of claim 16 wherein the means for coupling each of the fan blades to the central hub further includes a strut having: a first portion attached to the upper and lower support members; anda second portion attached to the inboard end portion of the fan blade. 19. The fan of claim 16 wherein the upper support member is spaced apart from the lower support member to define an open space therebetween. 20. A method of manufacturing a fan, the method comprising: positioning an outer portion of a central hub between an upper support member and a lower support member, wherein the central hub includes a top side facing a first direction and a bottom side facing a second direction, opposite to the first direction;attaching a proximal end portion of the upper support member to the top side of the central hub;attaching a proximal end portion of the lower support member to the bottom side of the central hub;coupling an inboard end portion of a fan blade to a distal end portion of the upper support member, wherein coupling the inboard end portion of the fan blade to the distal end portion of the upper support member includes at least partially inserting the distal end portion of the upper support member through an opening and into a cavity in the inboard portion of the fan blade; andcoupling the inboard end portion of the fan blade to a distal end portion of the lower support member, wherein coupling the inboard end portion of the fan blade to the distal end portion of the lower support member includes at least partially inserting the distal end portion of the lower support member through the opening and into the cavity in the inboard portion of the fan blade. 21. A method of manufacturing a fan, the method comprising: positioning an outer portion of a central hub between a proximal end portion of an upper support member and a proximal end portion of a lower support member, wherein the central hub includes a top side facing a first direction and a bottom side facing a second direction, opposite to the first direction;attaching the proximal end portion of the upper support member to the top side of the central hub;attaching the proximal end portion of the lower support member to the bottom side of the central hub;coupling a distal end portion of the upper support member to a first end portion of a strut;coupling a distal end portion of the lower support member to the first end portion of the strut; andinserting a second end portion of the strut through an opening and into a cavity in an inboard end portion of a fan blade, wherein the first end portion of the strut is sandwiched between the distal end portions of the upper and lower support members when coupled to the upper and lower support members. 22. The method of claim 21 wherein the inboard end portion is offset from the central hub by a distance of at least 12 inches. 23. The method of claim 21, further comprising: disposing a central spacer between a first hub plate and a second hub plate such that the central spacer is positioned adjacent to a drive shaft opening of each of the first and second hub plates; anddisposing a plurality of outer spacers between an outer periphery of each of the first and second hub plates. 24. The method of claim 21, further comprising coupling the inboard end portion of the fan blade to the second end portion of the strut. 25. A method of manufacturing a fan, the method comprising: attaching a first retention member to a top side of a central hub, wherein the top side faces a first direction, wherein the central hub includes a bottom side facing a second direction, opposite to the first direction, and wherein the first retention member includes a first flange that at least partially surrounds a drive shaft opening of the central hub;coupling the central hub to a drive shaft of a drive unit carried by a drive unit mount;after coupling the central hub to the drive shaft, attaching at least one second retention member to the drive unit mount, wherein the at least one second retention member includes a second flange that extends between the central hub and the first flange of the first retention member;positioning an outer portion of the central hub between an upper support member and a lower support member;attaching a proximal end portion of the upper support member to the top side of the central hub;attaching a proximal end portion of the lower support member to the bottom side of the central hub;coupling an inboard end portion of a fan blade to a distal end portion of the upper support member; andcoupling the inboard end portion of the fan blade to a distal end portion of the lower support member. 26. The fan of claim 25 wherein the first flange is an outward flange and the second flange is an inward flange. 27. The fan of claim 25 wherein the first flange extends in a first direction and the second flange extends in a second direction, opposite to the first direction.
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