Which type of active humidifier breaks the underwater gas stream into small bubbles?

The type of active humidifier that breaks the underwater gas stream into small bubbles is the bubble humidifier. This device operates by introducing oxygen or another gas into a water reservoir, allowing the gas to pass through the water in the form of tiny bubbles. As these bubbles rise to the surface and burst, they increase the surface area of the water and facilitate the transfer of moisture to the gas. This process effectively humidifies the gas before it reaches the patient, ensuring that the lungs receive correctly conditioned air.

The efficiency of bubble humidifiers is particularly beneficial in medical settings where maintaining appropriate humidity levels is critical for patient comfort and respiratory health. They are often used in conjunction with oxygen therapy to prevent dryness and irritation in the airways. By using bubbles, this humidifier type ensures that the gas is well-saturated with moisture, which can enhance patient outcomes during respiratory treatments.