Patent ID: 9610420
Date: 2017-04-04
CPC Classifications: A61M,A62B,B01F,B29L,F04D

Claim:
1. A breathable gas supply apparatus for treatment of respiratory disorders comprising: a flow generator with an air inlet on a rear wall, the air inlet configured to provide a supply of ambient air to a blower of the flow generator; a water tub with a first air opening, a second air opening, a top portion, a side surface configured to face the rear wall in use and having the second air opening therein and a bottom portion, said bottom portion having a heat conducting surface; a base with a heater, the base being configured to receive the water tub; a lid, a rotatably engageable catch for the lid, the catch being configured to secure the water tub in the base; a first seal between the lid and the top portion of the water tub; an outlet pipe configured to connect with an air delivery tube; a first gas flow port aligned with and in a facing arrangement with the first air opening; a second gas flow port in a facing arrangement with the second air opening; and a second seal configured to create a sealed passage between the second gas flow port and the second air opening, wherein the water tub and the base include complementary configurations that facilitate alignment of the water tub with respect to the base to ensure alignment between the first air opening and the first gas flow port, wherein when the catch is engaged to the base, downwards force is maintained on the water tub to maintain heat-transfer contact between the bottom portion and the heater, wherein the water tub is configured to be removed and refilled with water without requiring disengagement of the air delivery tube from the outlet pipe, and wherein the first air opening, the second air opening, the first gas flow port and the second gas flow port are part of a flow path between the flow generator and the outlet pipe.