US 12,215,886 B2
System and method for heating and cooling
Miki Yamada, Osaka (JP); Junichi Shimoda, Osaka (JP); Takamune Okui, Osaka (JP); Yuko Ishida, Osaka (JP); Joseph Kelly Hearnsberger, Katy, TX (US); David Palazzolo, Houston, TX (US); and Sriram Venkat, Katy, TX (US)
Assigned to Daikin Industries, Ltd., Osaka (JP); and Goodman Manufacturing Company, L.P., Waller, TX (US)
Filed by Daikin Industries, Ltd., Osaka (JP); and Goodman Manufacturing Company, L.P., Waller, TX (US)
Filed on Dec. 19, 2023, as Appl. No. 18/544,627.
Application 18/544,627 is a continuation of application No. 18/165,377, filed on Feb. 7, 2023, granted, now 11,859,861.
Application 18/165,377 is a continuation of application No. 17/720,828, filed on Apr. 14, 2022, granted, now 11,578,880, issued on Feb. 14, 2023.
Application 17/720,828 is a continuation of application No. 16/250,951, filed on Jan. 17, 2019, granted, now 11,313,568, issued on Apr. 26, 2022.
Claims priority of provisional application 62/619,779, filed on Jan. 20, 2018.
Prior Publication US 2024/0117976 A1, Apr. 11, 2024
Int. Cl. F24F 3/08 (2006.01); F24F 1/00 (2019.01); F24F 3/00 (2006.01)
CPC F24F 3/08 (2013.01) [F24F 1/00 (2013.01); F24F 2003/008 (2013.01)] 4 Claims
OG exemplary drawing
 
1. A heating, ventilation, and air-conditioning (“HVAC”) system for providing conditioned air to a structure, comprising:
an outdoor unit disposed external to the structure and comprising an outdoor coiled-tube heat exchanger comprising a first tubing with an outer diameter less than or equal to eight millimeters (8 mm);
an indoor unit disposed within the structure and comprising an indoor coiled-tube heat exchanger coupled to the outdoor coiled-tube heat exchanger and comprising a second tubing with an outer diameter less than or equal to nine millimeters (9 mm), wherein the outer diameter of the first tubing is smaller than the outer diameter of the second tubing;
an airflow circulation system operable to circulate air from the structure over the indoor heat exchanger and then route the air back to the structure via ductworks; and
an electronic expansion valve in fluid communication with at least one of the outdoor heat exchanger or the indoor heat exchanger and configured to reduce a pressure of a refrigerant flowing through the electronic expansion valve.