초록 ▼

Four air flow control doors of an automotive air conditioning device are synchronously controlled by a link mechanism. With a unique construction of the link mechanism, the following advantageous results are obtained. In a ventilation mode of a maximum cool condition, sufficient amount of cooled air

Four air flow control doors of an automotive air conditioning device are synchronously controlled by a link mechanism. With a unique construction of the link mechanism, the following advantageous results are obtained. In a ventilation mode of a maximum cool condition, sufficient amount of cooled air can be blown into the vehicle cabin from a ventilation opening. In the ventilation mode of a half-hot condition, mixing of cooled air and warmed air is effectively carried out before being blown into the vehicle cabin. In a bi-level mode of the half-hot condition, the passengers in the vehicle cabin can enjoy a so-called "lower side warming and upper side cooling" air conditioning wherein the lower portion of the vehicle cabin is suitably warmed and the upper portion of the vehicle cabin is suitably cooled.

대표청구항 ▼

[ What is claimed is:] [1.] An automotive air conditioning device comprising:an air flow passage including an upstream part and first and second downstream parts each extending downstream from a downstream end of said upstream part;an evaporator installed in said upstream part to cool air flowing th

[ What is claimed is:] [1.] An automotive air conditioning device comprising:an air flow passage including an upstream part and first and second downstream parts each extending downstream from a downstream end of said upstream part;an evaporator installed in said upstream part to cool air flowing therethrough;a heater core installed in said first downstream part to heat air flowing therethrough;a slide type air mix door which slides between a first slide position where the door closes the first downstream part while opening the second downstream part and a second slide position where the door opens the first downstream part while closing the second downstream part;an air mix chamber with which downstream portions of said first and second downstream parts are merged;a partition wall extending in and along said air mix chamber to define at a downstream portion of said air mix chamber a bypass passage and an air mix passage, said bypass passage having an upstream portion facing said second downstream part, said air mix passage having an upstream portion facing both said first and second downstream parts;a temperature difference compensating door pivotally installed in said bypass passage to open and close the bypass passage;ventilation and defroster openings each facing downstream portions of said bypass passage and said air mix passage;a pivotal switch door which pivots between a first angular position where the door closes the defroster opening while opening the ventilation opening and a second angular position where the door opens the defroster opening while closing the ventilation opening;a foot opening facing said air mix passage;a pivotal foot door for opening and closing said foot opening; anda link mechanism for synchronously actuating said air mix door, said temperature difference compensating door, said switch door and said foot door,wherein said link mechanism is so constructed that when said air mix door assumes said first slide position, said temperature difference compensating door fully opens said bypass passage irrespective of the mode taken by the air conditioning device, and when said air mix door takes an intermediate position to partially open both the first and second downstream parts or takes said second slide position, said temperature difference compensating door takes one of predetermined three angular positions in accordance with the mode taken by the air conditioning device.