A vehicular air conditioner includes a casing, a blower fan, and a heating heat exchanger that is disposed in the casing. The heating heat exchanger is disposed downstream of the blower fan. The blower fan is disposed to extend over a first outside air space, a second outside air space, a first inside air space, and a second inside air space. The rotational direction of the blower fan is set so that each of the plurality of blades of the blower fan passes through the first inside air space, the first outside air space, the second outside air space, and the second inside air space in this order when the plurality of blade are rotating.

A vehicle-use air conditioning device that supplies air to a side vent aperture portion regardless of a discharge mode, and allows a discharge of air from a defrost aperture portion when a discharge mode that maximizes a ratio of air blown to a passage communicating with a foot aperture portion is employed, is such that a change in an amount of air supplied from the defrost aperture portion is restricted using a simple structure that does not necessitate fine adjustment, even when an air passage on a downstream side of the side vent aperture portion is closed. A passage (a third passage 23) communicating with a side vent aperture portion 17b to a downstream side of heat exchangers 6, 7 is configured of a passage that, when a rotary type first door 25 that adjusts ratios of air blown to a first passage 21 communicating with a foot aperture portion 18 and a second passage 22 communicating with a defrost aperture portion 16 and a center vent aperture portion 17a is in a discharge mode position that maximizes the ratio of air blown to the first passage 21, connects a region to an upstream side of the first door 25 and the side vent aperture portion 17b, regardless of a discharge mode.

An air conditioning unit for a vehicle includes: a heat exchanger arranged in an engine compartment partitioned by a fire wall from a cabin; a first case arranged in the engine compartment to house the heat exchanger; and a second case arranged in the cabin to send air from the heat exchanger into the cabin. The fire wall has: a through hole passing through the fire wall so as to connect the first case and the second; and an air passage hole that defines an air passage to send air from the cabin into the engine compartment. The heat exchanger is arranged so that an entire area of the air passage hole is located inside a projection area defined by projecting the heat exchanger from a front to a rear of the vehicle.

A thermal management module for a thermal management system is disclosed. The thermal management module includes a first heat exchanger for flowing through by a refrigerant and by a working medium fluidically separately with respect to the refrigerant. A second heat exchanger is provided including at least a first fluid path and at least a second fluid path, separate from the first fluid path, respectively for flowing through by the refrigerant. A connecting arrangement is arranged between the first heat exchanger and the second heat exchanger. The connecting arrangement connects the first heat exchanger and the second heat exchanger to one another mechanically and fluidically, so that the refrigerant can flow between the first heat exchanger and the second heat exchanger.

Various disclosed embodiments include illustrative heating, ventilation, and air conditioning (HVAC) cases, HVAC systems, vehicles, and methods. In an illustrative embodiment, a heating, ventilation, and air conditioning (HVAC) system includes a case, a blower disposed in the case and configured to cause air to flow, a first heat exchanger disposed in the case and configured to heat the air, and an ambient extractor port defined in the case and configured to discharge to an ambient environment exterior to a structure the air provided to the ambient extractor port.

Methods and systems are provided for a vehicle air duct. In one example, a system for a vehicle, includes a passage comprising an inlet at a downstream portion of a front wheel well of the vehicle and an outlet upstream of a rear wheel well of the vehicle.

A blower device includes a centrifugal fan that sucks air from one side of the blower device in an axial direction, and an air flow guide disposed between the centrifugal fan and the other side of the blower device in the axial direction. A first air flow from the centrifugal fan is bent toward the other side in the axial direction. A second air flow from the centrifugal fan is bent toward the other side in the axial direction, and then bent inward in the radial direction. A ratio of a pressure loss in the second air flow to a pressure loss in the first air flow before a downstream end of the air flow guide is smaller than a ratio of a pressure loss in the second air flow to a pressure loss in the first air flow before an upstream end of the air flow guide.

Provided is a plate arrangement for fluid flow, including a support plate, and a plurality of channel plates detachably mounted on the support plate, wherein the plurality of channel plates are mounted to cover at least a portion of the support plate, each channel plate has a fluid channel, the plurality of channel plates are arranged along a fluid flow path of at least a portion of a predetermined fluid circulation loop so that the plurality of channel plates form at least the portion of the fluid circulation loop, and fluid channels of adjacent channel plates are fluidly connected to each other.

There is disclosed an environmental control system for thermally conditioning air within an enclosed space, the system comprising: a refrigerant circuit having a compressor, an indoor heat exchanger, an expansion device, and an outdoor heat exchanger. The system comprises an exhaust flowpath having a first inlet for receiving an exhaust flow of thermally conditioned air from the enclosed space and an outlet for discharging the exhaust flow to an external environment. A heat transfer section of the outdoor heat exchanger is located in the exhaust flowpath, wherein the exhaust flowpath is for directing the exhaust flow of thermally conditioned air through the heat transfer section of the outdoor heat exchanger.

In the application, since the flow of air outside the vehicle compartment flowing through the upstream heat exchange part and the flow of air outside the vehicle compartment flowing through the downstream heat exchange part are opposite flows, a second heat exchanger through which the air outside the vehicle compartment flowing from the first fan through the downstream heat exchange part flows, a first heat exchanger is an orthogonal heat exchanger, the second heat exchanger that is a component of a refrigeration cycle execution system, the air in the vehicle compartment, which flows in from the inside air inlet by the rotation of the second fan and is discharged from the outlet outside the vehicle through the first heat exchanger, and the air outside the vehicle compartment, are exchanged with the first heat exchanger, it can be miniaturized along with the improvement of electricity cost.