초록 ▼

An air-conditioning method and system for an automotive vehicle for controlling passenger compartment air temperature under comfortable air control conditions, that is, under comfortable outlet duct air volume and temperature according to the perception of individual passengers, once the control con

An air-conditioning method and system for an automotive vehicle for controlling passenger compartment air temperature under comfortable air control conditions, that is, under comfortable outlet duct air volume and temperature according to the perception of individual passengers, once the control conditions are adjusted by the passenger. The air-conditioning system according to the present invention comprises, in addition to a microcomputer, a temperature sensor, a temperature preset device, and the like, a blower-fan motor speed selector manually operated by the passenger, a non-volatile memory unit for storing the manually-adjusted blower-fan motor speeds classified on the basis of difference between detected air temperature and preset air temperature, vehicle travelling conditions, and the time elapsed since the system was turned on. In the first five minutes of operation the system can memorize a desired sequence of blower speeds selected by the occupant as well as the temperature difference between the compartment and outdoors and the vehicle speed. This information is stored in nonvolatile memory so that when the system is subsequently restarted, and the same environmental conditions exist, the desired blower speeds are implemented. The system also has an automatic mode in which blower speeds are selected from a pre-programmed table.

대표청구항 ▼

An air conditioning system by which air temperature within a passenger compartment is controlled, which comprises: (a) a cooling unit for cooling air introduced into the passenger compartment; (b) a heating unit for heating air introduced into the passenger compartment; (c) and air-mix door settable

An air conditioning system by which air temperature within a passenger compartment is controlled, which comprises: (a) a cooling unit for cooling air introduced into the passenger compartment; (b) a heating unit for heating air introduced into the passenger compartment; (c) and air-mix door settable to an individual percentage setting for directing a portion of the air cooled by said cooling unit toward said heating unit to be heated, said air-mix door percentage setting thereby controlling the temperature of air outputted into the passenger compartment; (d) a blower fan motor for driving air through the air conditioning system, said blower fan motor controlling the amount of air outputted into the passenger compartment; (e) a temperature sensor for detecting passenger compartment air temperature Ta and for generating signals corresponding thereto; (f) a temperature preset device for presetting passenger compartment air temperature Ts and for generating signals corresponding thereto; (g) a blower-fan motor speed selector for manually selecting a speed of said blower fan motor and for generating signals corresponding thereto, said selector being manually operated by a passenger; (h) a microcomputer having: (1) multiplexer means connected to said temperature sensor, to said temperature preset device and to said blower-fan motor speed selector, for receiving said outputting the corresponding signals sequentially; (2) an input interface means connected to said multiplexer means for converting and outputting signals received therefrom; (3) a read-only memory means for storing programs to be executed by said microcomputer; (4) a random-access memory means for temporarily storing data; (5) a non-volatile memory means for storing manually-selected blower-fan motor speed data even after the system is turned off; (6) a central processing unit for determining blower-fan motor speed in accordance with a predetermined relationship between blower-fan motor speed and the difference between passenger compartment air temperature Ta and preset passenger compartment air temperature Ts which is stored in said read-only memory means and for determining air-mix door opening percentage in accordance with a predetermined relationship between the air-mix door opening percentage and the difference between the passenger compartment air temperature Ta and the preset passenger compartment air temperature Ts which is stored in said read-only memory means, said central processing unit further operable for correcting the determined blower fan motor speed and the determined air-mix door opening percentage in accordance with the detected passenger compartment air temperature Ta, the preset passenger compartment air temperature Ts and selected blower-fan motor speed S stored in said non-volatile memory means; (7) an output interface means for converting and outputting a control signal to operate said blower-fan motor at the corrected blower-fan motor speed and a control signal to actuate said air-mix door at the corrected air-mix door opening percentage, whereby the passenger compartment air temperature is maintained at a preset desired value with said blower-fan motor operated at the speed manually selected by the passenger.