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US 12,569,703 B2Granted
Apparatus and method reducing humidity in respiratory protective device
AssigneeHoneywell Safety Products USA, Inc.
InventorsEnyi Chen, Xiaojin Han, Hang Tian, Wei Shi
Life of this patent
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Abstract
Apparatuses and methods reducing humidity in respiratory protective devices are provided. For example, an example respiratory protective device includes a humidity sensor component embedded in an exhalation filtration component of the respiratory protective device, at least one fan component positioned adjacent to an inhalation filtration component of the respiratory protective device, and a controller component in electronic communication with the humidity sensor component and the at least one fan component.
Claims10
A respiratory protective device comprising:
- a humidity sensor component embedded in an exhalation filtration component of the respiratory protective device;
- at least one fan component positioned adjacent to an inhalation filtration component of the respiratory protective device;
- and
- a controller component in electronic communication with the humidity sensor component and the at least one fan component, wherein the controller component is configured to:
- receive a humidity indication from the humidity sensor component, wherein the humidity indication comprises a humidity value;
- calculate a humidity difference value between the humidity value and a threshold humidity value;
- determine a reverse rotation speed value for the at least one fan component based on the humidity difference value;
- and
- determine a reverse rotation start signal transmission time point and a reverse rotation stop signal transmission time point for the at least one fan component based at least in part on the reverse rotation speed value.
6 more elements
Dependencies are inferred from the claim text.