Vehicle air conditioning system, has check valve arrangement to permit hot air flow from hot air duct into mixing region and prevent penetration of cold air or mixed air into duct and including valves partially made up of flexible material

摘要

The system has an air duct system with a mixing region connected with hot and cold air ducts, which supply hot and cold air to the region. A check valve arrangement (1) permits a flow of hot air from the hot air duct into the region and prevents the penetration of cold air or air mixed from hot and cold air from the region into the hot air duct. The arrangement has check valves partially made up of a bending flexible material.