Patent ID: 9725101
Date: 2017-08-08
CPC Classifications: B60H,B61D

Claim:
1. A vehicle air-conditioning system comprising: a passenger compartment air-conditioning apparatus that air-conditions a passenger compartment, a cab air-conditioning apparatus that is different from said passenger air-conditioning apparatus and that air-conditions a cab formed by an enclosure separate from the passenger compartment, a passenger compartment duct through which air conditioned by said passenger compartment air-conditioning apparatus is allowed to flow to the passenger compartment, and a cab duct through which air conditioned by said cab air-conditioning apparatus is allowed to flow to the cab, wherein said passenger compartment duct includes a passenger compartment air blow opening through which air is supplied into said passenger compartment and said passenger compartment duct includes a cab-duct communicating opening that is connected to said cab duct, said cab duct includes a cab air blow opening through which air is supplied into said cab and said cab duct includes a passenger-compartment-duct communicating opening that is connected to said passenger compartment duct, a bypass duct connected between said passenger compartment duct and said cab duct, and the vehicle air-conditioning system includes a duct opening and closing device in said bypass duct that turns communication from said passenger compartment duct to said cab duct ON or OFF; at least one cab air outlet through which air in said cab is discharged to the outside of said cab; and an outlet opening and closing device that is positioned so that its movement opens or closes the at least one cab air outlet by blocking or not blocking the at least one cab air outlet, wherein said at least one cab air outlet includes a first outlet opened so as to communicate with an air intake side of said cab air-conditioning apparatus and a second outlet opened so as to communicate with said passenger compartment, said outlet opening and closing device selectively discharges the air in said cab to either the outside air intake side of said cab air-conditioning apparatus or said passenger compartment, in normal mode, said duct opening and closing device turns the communication from said passenger compartment duct to said cab duct OFF, and said outlet opening and closing device opens said first outlet, and in the case of failure of said cab air-conditioning apparatus, said duct opening and closing device turns the communication from said passenger compartment duct to said cab duct ON, and said outlet opening and closing device opens said second outlet.