US 12,352,509 B2
Microchannel heat exchanger
Xingshun Gao, York, PA (US)
Assigned to Tyco Fire & Security GmbH, Neuhausen am Rheinfall (CH)
Appl. No. 18/028,181
Filed by Johnson Controls Tyco IP Holdings LLP, Milwaukee, WI (US)
PCT Filed Sep. 24, 2021, PCT No. PCT/US2021/051991
§ 371(c)(1), (2) Date Mar. 23, 2023,
PCT Pub. No. WO2022/067065, PCT Pub. Date Mar. 31, 2022.
Claims priority of provisional application 63/082,905, filed on Sep. 24, 2020.
Prior Publication US 2024/0318919 A1, Sep. 26, 2024
Int. Cl. F28F 9/02 (2006.01); F28D 7/16 (2006.01)
CPC F28D 7/163 (2013.01) 19 Claims
OG exemplary drawing
 
1. A heat exchanger for a heating, ventilating, and/or air conditioning (HVAC) system, comprising:
a header comprising a longitudinal axis;
a first plurality of microchannel tubes coupled to the header, wherein each microchannel tube of the first plurality of microchannel tubes comprises a first width; and
a second plurality of microchannel tubes coupled to the header, wherein each microchannel tube of the second plurality of microchannel tubes comprises a second width greater than the first width,
wherein the second width extends along a second axis, and the second axis extends at an oblique angle relative to the longitudinal axis.