Provided is a window air conditioner (100). The window air conditioner includes an outdoor unit body (2), an indoor unit component (101), a connection support (3), and a seal member (5). The outdoor unit body (2) is adapted to be arranged at an outdoor side. The indoor unit component (101) includes an indoor unit body (1) adapted to be arranged at an indoor side. The connection support (3) is adapted to pass through a window opening (200) and connected to the indoor unit component (101) and the outdoor unit body (2). The indoor unit component (101) is slidable relative to the connection support (3) in an inward-outward direction. The seal member (5) is configured to seal a sliding-fit gap between the connection support (3) and the indoor unit component (101).

A buffered balanced type mobile primary-secondary air conditioner system wherein three working media are used in primary-secondary air conditioner system. The first working medium is a compressor refrigeration working medium, the second working medium is an energy storage and heat transfer working medium shared by the primary machine and the secondary machine, and the third working medium is a secondary machine energy storage and heat transfer working medium. This scheme establishes a buffer balance zone between the primary machine and the secondary machine to store the second working medium.

A buffered balanced type mobile primary-secondary air conditioner system wherein three working media are used in primary-secondary air conditioner system. The first working medium is a compressor refrigeration working medium, the second working medium is an energy storage and heat transfer working medium shared by the primary machine and the secondary machine, and the third working medium is a secondary machine energy storage and heat transfer working medium. This scheme establishes a buffer balance zone between the primary machine and the secondary machine to store the second working medium.

A fresh air panel assembly includes a fresh air panel and a mounting plate. The fresh air panel includes an air outlet structure. The mounting plate includes a vent penetrating through the mounting plate. The fresh air panel is mounted at a surface of the mounting plate. The vent is arranged corresponding to the air outlet structure.

A fresh air panel assembly includes a fresh air panel and a mounting plate. The fresh air panel includes an air outlet structure. The mounting plate includes a vent penetrating through the mounting plate. The fresh air panel is mounted at a surface of the mounting plate. The vent is arranged corresponding to the air outlet structure.