Dual-profile strong-suction vortex fan blade, fan and electronic device

2:

• The dual-profile strong-suction vortex fan blade of claim 1, wherein a surface of the axial flow blades facing the centrifugal blades is a first air guide surface;
• a surface of the axial flow blades facing away from the centrifugal blades is a second air guide surface;
• the first air guide surface and the second air guide surface of each axial flow blade both gradually approach the gap obliquely relative to the axial direction;
• and the first air guide surface and the second air guide surface of each axial flow blade have projections in the axial direction falling into the same two adjacent gaps, so that the first air guide surface of one axial flow blade and the second air guide surface of another adjacent axial flow blade cooperate to guide external gas into the two corresponding gaps in order.

4:

• The dual-profile strong-suction vortex fan blade of claim 3, wherein each centrifugal blade includes a guide part and a blowing part;
• the guide part and the blowing part are sequentially connected in a direction gradually away from the base, the guide part is convex in a rotating direction of the centrifugal blade, and the blowing part is convex in an opposite direction to the rotating direction of the centrifugal blade;
• and
• ends of the first air guide surface and the second air guide surface away from the base both extend to a position adjacent to a joint of the guide part and the blowing part.

8:

• A dual-profile strong-suction vortex fan blade, comprising a base, and a plurality of centrifugal blades and a plurality of axial flow blades respectively connected to the base, wherein
• the plurality of centrifugal blades and the plurality of axial flow blades circumferentially surround an outer periphery of the base, respectively, and the plurality of axial flow blades are arranged at an air intake side of the plurality of centrifugal blades;
• a gap is formed between every two adjacent centrifugal blades;
• the number of centrifugal blades is 2N times the number of axial flow blades, so that the number of gaps is also 2N times the number of axial flow blades;
• and each axial flow blade extends obliquely relative to an axial direction and gradually approaches two adjacent gaps which are right opposite to the axial flow blade, so that each axial flow blade guides external gas into the two corresponding gaps in order, where N>1 and N is an integer.

9:

• The dual-profile strong-suction vortex fan blade of claim 8, wherein a surface of the axial flow blades facing the centrifugal blades is a first air guide surface;
• a surface of the axial flow blades facing away from the centrifugal blades is a second air guide surface;
• the first air guide surface and the second air guide surface of each axial flow blade both gradually approach the gap obliquely relative to the axial direction;
• and the first air guide surface and the second air guide surface of each axial flow blade have projections in the axial direction falling into the same two adjacent gaps, so that the first air guide surface of one axial flow blade and the second air guide surface of another adjacent axial flow blade cooperate to guide external gas into the two corresponding gaps in order.

11:

• The dual-profile strong-suction vortex fan blade of claim 10, wherein each centrifugal blade includes a guide part and a blowing part;
• the guide part and the blowing part are sequentially connected in a direction gradually away from the base, the guide part is convex in a rotating direction of the centrifugal blade, and the blowing part is convex in an opposite direction to the rotating direction of the centrifugal blade;
• and
• ends of the first air guide surface and the second air guide surface away from the base both extend to a position adjacent to a joint of the guide part and the blowing part.

15:

• A fan, in adopting a dual-profile strong-suction vortex fan blade, wherein the dual-profile strong-suction vortex fan blade comprises:
• a base, and a plurality of centrifugal blades and a plurality of axial flow blades respectively connected to the base, wherein
• the plurality of centrifugal blades and the plurality of axial flow blades circumferentially surround an outer periphery of the base, respectively, and the plurality of axial flow blades are arranged at an air intake side of the plurality of centrifugal blades:
• a gap is formed between every two adjacent centrifugal blades:
• the number of centrifugal blades is twice the number of axial flow blades, so that the number of gaps is also twice the number of axial flow blades;
• and each axial flow blade extends obliquely relative to an axial direction and gradually approaches two adjacent gaps which are right opposite to the axial flow blade, so that each axial flow blade guides external gas into the two corresponding gaps in order.

17:

• The fan of claim 15, wherein a surface of the axial flow blades facing the centrifugal blades is a first air guide surface;
• a surface of the axial flow blades facing away from the centrifugal blades is a second air guide surface;
• the first air guide surface and the second air guide surface of each axial flow blade both gradually approach the gap obliquely relative to the axial direction;
• and the first air guide surface and the second air guide surface of each axial flow blade have projections in the axial direction falling into the same two adjacent gaps, so that the first air guide surface of one axial flow blade and the second air guide surface of another adjacent axial flow blade cooperate to guide external gas into the two corresponding gaps in order.

19:

• The fan of claim 18, wherein each centrifugal blade includes a guide part and a blowing part;
• the guide part and the blowing part are sequentially connected in a direction gradually away from the base, the guide part is convex in a rotating direction of the centrifugal blade, and the blowing part is convex in an opposite direction to the rotating direction of the centrifugal blade;
• and
• ends of the first air guide surface and the second air guide surface away from the base both extend to a position adjacent to a joint of the guide part and the blowing part.

20:

• A fan, adopting a dual-profile strong-suction vortex fan blade, wherein the dual-profile strong-suction vortex fan blade comprises:
• a base, and a plurality of centrifugal blades and a plurality of axial flow blades respectively connected to the base, wherein
• the plurality of centrifugal blades and the plurality of axial flow blades circumferentially surround an outer periphery of the base, respectively, and the plurality of axial flow blades are arranged at an air intake side of the plurality of centrifugal blades;
• a gap is formed between every two adjacent centrifugal blades;
• the number of centrifugal blades is 2N times the number of axial flow blades, so that the number of gaps is also 2N times the number of axial flow blades;
• and each axial flow blade extends obliquely relative to an axial direction and gradually approaches two adjacent gaps which are right opposite to the axial flow blade, so that each axial flow blade guides external gas into the two corresponding gaps in order, where N>1 and N is an integer.

21:

• The fan of claim 20, wherein a surface of the axial flow blades facing the centrifugal blades is a first air guide surface;
• a surface of the axial flow blades facing away from the centrifugal blades is a second air guide surface;
• the first air guide surface and the second air guide surface of each axial flow blade both gradually approach the gap obliquely relative to the axial direction;
• and the first air guide surface and the second air guide surface of each axial flow blade have projections in the axial direction falling into the same two adjacent gaps, so that the first air guide surface of one axial flow blade and the second air guide surface of another adjacent axial flow blade cooperate to guide external gas into the two corresponding gaps in order.