Humidifier chamber temperature control for precise humidity control

摘要

PROBLEM TO BE SOLVED: To provide a respiratory assist system for supplying a heated and humidified body flow to a user. The system includes a humidifier unit 5 that retains and heats a predetermined amount of water and receives a gas flow from a gas source via a suction port port 23 during use, the gas flow providing a humidifier. A temperature sensor that measures the temperature of the gas that passes through, exits through the outlet port, and exits the humidifier unit, an ambient temperature sensor 60 that measures the temperature of the gas before entering the humidifier unit, and a gas flow rate. It has a flow sensor that measures the flow rate, and also has a controller that receives data from the temperature sensor and the flow sensor and determines the control output accordingly, the control output adjusting the power to the humidifier unit. Thereby, the desired output is realized at the outlet port of the humidifier unit. [Selection diagram] FIG. 2b