Air intake and exhaust assembly and packaged air conditioner

A packaged air conditioner comprising:

• an air exhaust volute;
• and
• an air intake and exhaust assembly including:
• an air exhaust pipe, including an air exhaust channel formed in the air exhaust pipe;
• a connection pipe, one end of the connection pipe being connected to a lower end of the air exhaust pipe and another end of the connection pipe being configured to be connected to the air exhaust volute, such that the air exhaust channel is communicated with an air outlet of the air exhaust volute;
• an air intake pipe arranged adjacent to the air exhaust pipe, an air intake channel being formed between an inner wall of the air intake pipe and an outer wall of the air exhaust pipe, and the air intake channel being communicated with an air inlet of the packaged air conditioner;
• and
• a sealing plate including:
• an air intake hole connected to one end of the air intake pipe away from the air inlet;
• a fixation ring arranged in the air intake hole;
• and
• an air exhaust hole connected to one end of the air exhaust pipe away from the air outlet, wherein the air intake hole surrounds the air exhaust hole, and the fixation ring is between the air intake hole and the air exhaust hole.