Integrated humidifier chamber and lid

An integrated blower and humidification system for providing heated humidified gases to a user, comprising:

• a humidifier unit adapted to contain a volume of water and also adapted for use in conjunction with a heater base such that said volume of water can be heated, said humidifier unit having a gases inlet port, a separate gases outlet port and a separate top fill aperture,
• a blower unit having an outer casing and having a humidifier compartment into which said humidifier unit locates in use, said humidifier compartment having an enclosing wall and a top opening, said humidifier unit inserted into said humidifier compartment through said top opening, said humidifier unit enclosed within said humidifier compartment by said enclosing wall, said humidifier compartment having a heater base, said blower unit further having an inlet vent open to atmosphere on said outer casing, a blower inlet port and an outlet port on said enclosing wall in said humidifier compartment, a gases path running between said inlet vent and said blower inlet port, and a fan unit to provide a pressurised gases stream along said gases path, in use said blower inlet port and said gases inlet port aligned to provide a gases route for gases exiting said blower unit via said blower inlet port and entering said humidifier unit via said gases inlet port, said gases exiting said humidifier unit via said gases outlet port,
• a connector to allow said gases stream exiting said humidifier unit to enter a patient interface,
• a lid unit, said lid unit and said blower unit are adapted to mutually connect in such a manner that rotation of a portion of said lid unit closes and seals said humidifier unit such that said humidifier unit is enclosed within said humidifier compartment, and said lid unit holds said humidifier unit in position in said humidifier compartment.