Patent ID: 9221318
Filing Date: 2015-12-29
Classification: B60H

Abstract:
1. An air conditioner for a vehicle comprising: a casing having therein a first air passage through which outside air flows toward a vehicle compartment, and a second air passage through which inside air flows toward the vehicle compartment in an inside-outside air double-layer mode; a heating heat exchanger arranged in the first air passage to heat the outside air flowing in the first air passage, and arranged in the second air passage to heat the inside air flowing in the second air passage; a partition plate disposed upstream of the heating heat exchanger in an air flow direction and separating the first air passage and the second air passage; a first air mix door arranged in the first air passage to adjust a ratio between a flow amount of the outside air passing through the heating heat exchanger and a flow amount of the outside air bypassing the heating heat exchanger; and a second air mix door arranged in the second air passage to adjust a ratio between a flow amount of the inside air passing through the heating heat exchanger and a flow amount of the inside air bypassing the heating heat exchanger, wherein each of the first air mix door and the second air mix door is a sliding door in which a plate door body part slides in two opposite directions, the plate door body part being at least partially gravitationally assisted by the weight of the plate door body part while sliding in one of the two opposite directions, an angle of the first air mix door relative to a front-rear direction of the vehicle which is a direction perpendicular to an up-down direction of the vehicle is greater than an angle of the second air mix door relative to the direction perpendicular to the up-down direction, the second air passage is located at a lower side of the first air passage in the up-down direction, the air conditioner further comprising: a first bypass passage provided at an upper side of the heating heat exchanger in the up-down direction in the first air passage to let the outside air bypass the heating heat exchanger; and a second bypass passage provided at a lower side of the heating heat exchanger in the up-down direction in the second air passage to let the inside air bypass the heating heat exchanger, the heating heat exchanger is located on a downstream side of the first and second air mix doors in the air flow direction, a lowermost position of the second air mix door within a slide range of the second air mix door in the up-down direction is located on a downstream side in the air flow direction of an uppermost position of the second air mix door within the slide range of the second air mix door in the up-down direction, the lowermost position of the second air mix door is located on a downstream side in the air flow direction of a slide range of the first air mix door, the heating heat exchanger is inclined such that a lower end of the heating heat exchanger in the up-down direction is located on a downstream side in the air flow direction of an upper end of the heating heat exchanger in the up-down direction, and the heating heat exchanger has a part located directly above the slide range of the second air mix door in the up-down direction.