US 12,188,664 B2
Fan, air conditioner including the fan, and method for manufacturing the fan
Byungghun Kim, Gyeonggi-do (KR); Hyunggeun Park, Gyeonggi-do (KR); Hwansoo Lee, Gyeonggi-do (KR); and Inwon Choi, Gyeonggi-do (KR)
Assigned to SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Appl. No. 17/434,194
Filed by SAMSUNG ELECTRONICS CO., LTD., Gyeonggi-do (KR)
PCT Filed Aug. 11, 2021, PCT No. PCT/KR2021/010619
§ 371(c)(1), (2) Date Aug. 26, 2021,
PCT Pub. No. WO2022/055136, PCT Pub. Date Mar. 17, 2022.
Claims priority of application No. 10-2020-0115634 (KR), filed on Sep. 9, 2020; and application No. 10-2020-0115656 (KR), filed on Sep. 9, 2020.
Prior Publication US 2023/0175710 A1, Jun. 8, 2023
Int. Cl. F24F 1/0022 (2019.01); B29C 45/33 (2006.01); B29L 31/08 (2006.01); F04D 29/24 (2006.01); F04D 29/42 (2006.01); F24F 13/20 (2006.01)
CPC F24F 1/0022 (2013.01) [B29C 45/33 (2013.01); F04D 29/24 (2013.01); F04D 29/42 (2013.01); F24F 13/20 (2013.01); B29C 2045/338 (2013.01); B29L 2031/08 (2013.01); F24F 2013/205 (2013.01); F24F 2221/14 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A fan, comprising:
an inlet part disposed to form a fan inlet;
a base disposed to form, together with the inlet part, a fan outlet; and
a blade extending from the base to the inlet part, the blade including:
a first surface formed to face outward in a radial direction; and
a second surface formed to face inward in the radial direction, the second surface including:
a first guide surface having an inclination toward an outside of the fan in a radial direction of the fan which changes in a direction from the inlet part toward the base; and
a second guide surface having an inclination toward the outside of the fan in the radial direction which changes in a direction from the base toward the inlet part; and
a stepped portion formed at a boundary between the first guide surface and the second guide surface, the stepped portion including:
a first stepped portion having a surface which faces the first guide surface; and
a second stepped portion having a surface which faces the second guide surface.