US 11,939,988 B2
Air duct component for cross-flow impeller and air conditioning apparatus having same
Jing Ling, Chongqing (CN); Longfei Wang, Chongqing (CN); Qiankun Liu, Chongqing (CN); and Xidong Wang, Chongqing (CN)
Assigned to CHONGQING MIDEA AIR-CONDITIONING EQUIPMENT CO., LTD., Chongqing (CN); and GD MIDEA AIR-CONDITIONING EQUIPMENT CO., LTD., Foshan (CN)
Appl. No. 17/424,420
Filed by CHONGQING MIDEA AIR-CONDITIONING EQUIPMENT CO., LTD., Chongqing (CN); and GD MIDEA AIR-CONDITIONING EQUIPMENT CO., LTD., Foshan (CN)
PCT Filed Nov. 16, 2020, PCT No. PCT/CN2020/129052
§ 371(c)(1), (2) Date Jul. 20, 2021,
PCT Pub. No. WO2022/077688, PCT Pub. Date Apr. 21, 2022.
Claims priority of application No. 202011088504.5 (CN), filed on Oct. 13, 2020; and application No. 202022273245.5 (CN), filed on Oct. 13, 2020.
Prior Publication US 2022/0372991 A1, Nov. 24, 2022
Int. Cl. F04D 17/04 (2006.01); F04D 25/08 (2006.01); F04D 29/30 (2006.01); F04D 29/42 (2006.01); F04D 29/44 (2006.01)
CPC F04D 29/30 (2013.01) [F04D 17/04 (2013.01); F04D 25/08 (2013.01); F04D 29/4233 (2013.01); F04D 29/441 (2013.01)] 7 Claims
OG exemplary drawing
 
1. An air duct component for a cross-flow impeller comprising:
a first volute member, an inner end of the first volute member including a volute tongue; and
a second volute member;
wherein:
the first volute member and the second volute member are arranged opposite to each other in a cross section perpendicular to an axis of the cross-flow impeller;
a cross-flow air duct formed between the first volute member and the second volute member includes a middle air duct section and an end air duct section arranged along an axial direction of the cross-flow impeller, the end air duct section being located at an end of the middle air duct section;
the middle air duct section includes a middle air outlet duct located downstream of a vertical line that passes through the volute tongue and is perpendicular to the second volute member;
the end air duct section includes an end air outlet duct located downstream of the vertical line; and
an area of a cross-section of the middle air outlet duct perpendicular to the axial direction of the cross-flow impeller is larger than an area of a cross-section of the end air outlet duct perpendicular to the axial direction of the cross-flow impeller.