US 11,723,837 B2
Backup methods and systems for spa system thermal management
York Sikora, Ottawa (CA)
Filed by York Sikora, Ottawa (CA)
Filed on Jul. 26, 2022, as Appl. No. 17/815,048.
Application 17/815,048 is a continuation of application No. 16/498,113, granted, now 11,446,204, previously published as PCT/CA2018/000152, filed on Aug. 16, 2018.
Claims priority of provisional application 62/546,088, filed on Aug. 16, 2017.
Prior Publication US 2022/0354740 A1, Nov. 10, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. A61H 33/00 (2006.01); F24D 19/00 (2006.01)
CPC A61H 33/6005 (2013.01) [A61H 33/0091 (2013.01); A61H 33/6068 (2013.01); F24D 19/0095 (2013.01); A61H 2201/0207 (2013.01); A61H 2201/0242 (2013.01); A61H 2201/5082 (2013.01); A61H 2201/5097 (2013.01)] 22 Claims
OG exemplary drawing
 
1. A system for freeze protection of a spa system comprising a spa tub, a fluidic circuit comprising a controller coupled to powered components of the spa system, and the powered components of the spa system which are coupled to a mains power interface powering the powered components of the spa system and a shell supporting the spa tub, the system comprising:
a control unit coupled to a temperature sensor for enabling a heater not forming part of the powered components of the spa system when a reading from the temperature sensor received by the control unit indicates that the temperature of air within a cavity between the shell of the spa system and the spa tub has dropped below a predetermined threshold independent of a state of the fluidic circuit forming part of the spa system.