Automotive air conditioning system
AssigneeCalsonic Corporation
InventorHitoshi Akasaka
Life of this patent
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Abstract
An automotive air conditioning system is disclosed which is incorporated with a known automatic air conditioner installed in a motor vehicle. The air conditioning system has first, second and third operation modes which are automatically selected. When the system assumes the first operation mode, air in upper and lower portions of the passenger cabin is discharged to outside of the vehicle through upper and lower ducts. When the system assumes the second operation mode, air in the lower portion of is sucked into an air conditioning unit through the lower duct and cooled and blown into the upper portion of the passenger cabin through the upper duct. When the system assumes the third operation mode, air in the upper portion of the passenger cabin is enforcedly discharded to outside of the vehicle through the upper duct.
Claims24
An air conditioning system for use with an automatic air conditioner installed in a motor vehicle, comprising:
- a first duct extending to a ceiling of a passenger cabin of the vehicle and having an opening which is exposed to an upper portion of said passenger cabin;
- a second duct extending along a floor of the vehicle and having an opening which is exposed to a lower portion of the passenger cabin;
- an air conditioning unit having an electric fan and an evaporator installed therein, said unit being connected to said first and second ducts and having first, second and third operation modes, said first operation mode being a mode in which, under operation of said electric fan, air in the passenger cabin is forced to be sucked into said unit through said first and second ducts and discharged to outside of the vehicle, said second operation mode being a mode in which, under operation of said electric fan, air in the passenger cabin is sucked into said unit through said second duct, cooled by said evaporator, fed to said first duct and blown into said passenger cabin from said opening of said first duct, and said third operation mode being a mode in which contaminated air is sucked into said unit from said opening of said first duct and discharged to outside of the vehicle;
- sensor means for producing information signals which are representative of conditions of the passenger cabin;
- and
- a control device for permitting said air conditioning unit to select one of said first, second and third operation modes in accordance with information signals issued from said sensor means and for controlling the speed of said electric fan in accordance with the information signals issued from said sensor means and those issued from a front fan control device which controls the speed of an electric fan installed in said automatic air conditioner.
An air conditioning system for use with an automatic air conditioner installed in a motor vehicle, comprising:
- first and second substantially identical air conditioning lines which are constructed to condition air in first and second given spaces of a passenger cabin of the vehicle respectively;
- sensor means for producing information signals which are representative of respective conditions of the first and second given spaces of the passenger cabin;
- and
- a control device for controlling said first and second air conditioning lines in accordance with the information signals issued from both said sensor means and a front air conditioner control device which controls the automatic air conditioner, said control device having a first control mode wherein said first and second air conditioning lines are independently but automatically controlled in accordance with said information signals, a second control mode wherein said first and second air conditioning lines are identically but automatically controlled in accordance with said information signals and a third control mode wherein said first and second air conditioning lines are independently controlled in a way manually set,
- wherein each of said first and second air conditioning lines comprises:
- a first duct extending to a ceiling of a passenger cabin of the vehicle and having an opening which is exposed to an upper portion of one given space of said passenger cabin;
- a second duct extending along a floor of the vehicle and having an opening which is exposed to a lower portion of one given space of the passenger cabin;
- an air conditioning unit having an electric fan means and an evaporator means installed therein, said unit being connected to said first and second ducts and having first, second and third operation modes, said first operation mode being a mode in which, under operation of said electric fan means, air in the passenger cabin is forced to be sucked into said unit through said first and second ducts and discharged to outside of the vehicle, said second operation mode being a mode in which, under operation of said electric fan, air in the passenger cabin is sucked into said unit through said second duct, cooled by said evaporator means, fed to said first duct and blown into said given space of the passenger cabin from said opening of said first duct, and said third operation mode being a mode in which contaminated air is sucked into said unit from said opening of said first duct and discharged to outside of the vehicle.
Dependencies are inferred from the claim text.