US Patent No. 9,931,907

VEHICLE AIR-CONDITIONING UNIT


Patent No. 9,931,907
Issue Date April 03, 2018
Title Vehicle Air-conditioning Unit
Inventorship Yutaka Shichiken, Kumagaya (JP)
Daisuke Araki, Kumagaya (JP)
Takao Koike, Kumagaya (JP)
Assignee VALEO JAPAN CO. LTD., Kumagaya-Shi (JP)

Claim of US Patent No. 9,931,907

1. A vehicle conditioning unit including:an air-conditioning case that has an air passage;
a heat exchanger that is arranged in the air passage and exchanges heat with air flowing through the air passage;
a center vent opening that is provided on a downstream side of the heat exchanger arranged in the air-conditioning case;
a side vent opening that is provided on a right side and/or a left side in a vehicle right and left direction of the center vent opening;
a defrost opening that is provided in a front side in a vehicle longitudinal direction of the center vent opening; and
a foot opening that is provided on a lower side in a vehicle vertical direction of the center vent opening,
wherein the air passage has:
a first passage that guides air that has passed through the heat exchanger to the center vent opening, the side vent opening, and the defrost opening; and
a second passage that is branched from the first passage and guides the air that has passed through the heat exchanger to the foot opening,
wherein a first door for distributing the air that has passed through the heat exchanger to the first passage and the second passage is arranged at a branched position to the second passage,
wherein a first supply passage that communicates between the first passage and the second passage is provided on a downstream side of the first door, and this first supply passage is opened and closed by the first door, and
wherein a second door for distributing the air that has passed through the heat exchanger to the center vent opening and the defrost opening is arranged in the first passage at a position on a downstream side of the first supply passage,
wherein in the vehicle air-conditioning unit in a foot mode, the first door closes the first passage and opens the first supply passage, and the second door closes the center vent opening, and forms a second supply passage, an entry of which is positioned in an extending direction of the first supply passage and an exit of which communicates with the side vent openings,
wherein the first door is a butterfly-type door that has:
a rotational shaft that is rotatably supported by the air-conditioning case;
a first closing section that extends from the rotational shaft;
a second closing section that extends from the rotational shaft in a different direction from the first closing section and greater than 90 degrees from the direction of the first closing section, in the foot mode, the first closing section closes the first passage, and the second closing section opens the first supply passage, and
a third closing section that extends from the rotational shaft in a different direction from both of the first closing section and the second closing section, a length of the third closing section in a direction along a shaft direction of the rotational shaft is shorter than a length of the first supply passage in the direction along the shaft direction of the rotational shaft, and in the foot mode, the third closing section partially closes the first supply passage.