Air source heat pump air conditioner energy-saving device utilizing tunnel air

The invention discloses an air source heat pump air conditioner energy-saving device utilizing tunnel air, which comprises a tunnel cold and heat source, a heat exchange medium, a heat exchange place, an outdoor unit of an air source heat pump and a plurality of indoor units of the air source heat pump, a heat exchange medium is tunnel air which flows directionally under the influence of piston air and mechanical exhaust air in a tunnel, a heat exchange place is an exhaust shaft of the tunnel, an air inlet of an outdoor unit is communicated with the exhaust shaft of the tunnel, the outdoor unit is connected with a plurality of indoor units through piping, and the outdoor unit is arranged close to the exhaust shaft. The multiple indoor units are arranged in a room of the combined building of the exhaust shafts. Tunnel air and geothermal energy are efficiently utilized, the outdoor unit is arranged with the purpose of achieving the maximum heat exchange efficiency, and energy conservation and emission reduction