In a vehicle air conditioner device of a heat pump system, control of an air mix damper is appropriately performed in each operation mode, thereby achieving efficient vehicle interior air conditioning. The vehicle air conditioner device includes an air mix damper 28 to adjust a ratio at which air in an air flow passage 3 passed through a heat absorber 9 is to be passed through a radiator 4. In a cooling mode, a controller controls the air mix damper 28 to adjust the ratio at which the air is to be passed through the radiator 4 on the basis of one, any combination, or all of a target outlet temperature, a temperature of the radiator and a temperature of the heat absorber, and in a heating mode, the controller controls the air mix damper 28 to pass all the air in the air flow passage 3 through the radiator 4.

The invention relates to an air conditioning device for a motor vehicle, comprising, arranged in a housing (10), a first heat exchanger (21), through which an air flow (14) can flow and which can be operated as an evaporator of a refrigerant circuit, a second heat exchanger (20, 22) connected downstream of the first heat exchanger in the flow direction of the air flow (14), through which the air flow (14) can flow, and which is provided with a resistance heating element, and further comprising an air guiding flap (30) designed as a bypass flap, by way of which, depending on their position, parts of the air flow (14) can be guided past the second heat exchanger (20, 22).

A proximity air conditioner is capable of performing energy-saving and efficient air-conditioning. A proximity air-conditioning unit for vehicles includes: a housing; a temperature adjustment unit including a temperature adjuster and a blower; and ducts, wherein upper ends of blowout ports of ducts are located above seat surfaces of seats, end portions in a long-side direction of the blowout ports are located on a front side with respect to other end portions thereof in a front-back direction of the seats, and the temperature adjustment unit is disposed between both end portions in the long-side direction of each of the blowout ports.

A vehicular climate control system may include a coolant subsystem configured to circulate coolant between an engine, a thermal generator, and a cabin heat exchanger, and a controller. The controller may be configured to, responsive to an air inlet temperature of the heat exchanger exceeding a threshold, retard engine spark timing to increase heat generation. The threshold may be defined by a quotient of (i) a difference between a discharge temperature target and the air inlet temperature and (ii) a thermal effectiveness parameter that is based on an air flow rate and a coolant flow rate.

A method of controlling an air conditioning system for a vehicle is provided. The method includes detecting a cooling mode while the vehicle is being driven and comparing a vent discharge temperature of air with a cooling target temperature set by a user. When the vent discharge temperature is greater than the cooling target temperature the compressor RPM is determined and air is introduced into the vehicle without passing through the interior heat exchanger and the electric heater. When the vent discharge temperature is less than the cooling target temperature, the compressor RPM is determined and a door in the system is opened to guide the air through the interior heat exchanger to heat the air is heated and then the vent discharge temperature is compared with the cooling target temperature again, and the electric heater is operated.

An air conditioning apparatus for a vehicle includes an air conditioning case in which an cooling air cooled by a cooling device and a heating air heated by a heating device flow into a temperature adjustment space. In the air conditioning case, a humidity adjustment passage guides a part of the heating air to an adsorbent as an air desorbing moisture from the adsorbent, and guides a part of the cooling air to the adsorbent as an air having moisture to be adsorbed by the adsorbent. The temperature adjustment space and the humidity adjustment passage are provided downstream of the cooling device and the heating device. An air passage extending from the humidity adjustment passage to a humidification duct is provided with a mixing inhibitor that inhibits mixing of the heating air and the cooling air and mixing of a dehumidifying air and a humidifying air.

A vehicle climate system configured to generate a snow effect inside of a vehicle, the vehicle climate system includes: a liquid container configured to contain a liquid for generating artificial snow; an air inlet configured to supply air to the inside of the vehicle for generating artificial snow; and at least a first cooler outlet in fluid communication with the liquid container and the air inlet and configured to output artificial snow inside of the vehicle.

An air passage opening and closing device has: a case defining an air passage; and a slide door provided with a door body that has a plate shape, the slide door slidably disposed in the case and opening or closing the air passage. The case is provided with a case-side sealing surface that is in contact with the door body when the slide door is located to close the air passage. The door body is provided with a rib that protrudes toward an upstream side in a flow direction of air and extends in a moving direction of the slide door.

The present invention relates to a method for controlling an air conditioner for a vehicle, which includes a blower having a structure divided into a plurality of inlets and a plurality of outlets. The method may include: detecting or predicting, by a controller, one or more of an inside temperature of the vehicle, an outside temperature, a temperature of an engine serving as a heating source, an indoor humidity of the vehicle, CO.sub.2 concentration and rear seat passenger information; and comprehensively determining, by the controller, an outdoor state of the vehicle, an indoor state of the vehicle and a user's intention based on the detected or predicted information and a blower setting mode, and controlling an inlet door of the air conditioner according to one of a plurality of designated steps.

There is provided a vehicle air conditioner which is capable of smoothly achieving a dehumidifying and heating mode without using an evaporation pressure adjustment valve, so that cost reduction is achievable. A controller executes a normal mode to control an operation of a compressor 2 on the basis of a radiator pressure PCI and control a valve position of an outdoor expansion valve 6 on the basis of a heat absorber temperature Te, and in this normal mode, when the valve position of the outdoor expansion valve 6 is maximized but the heat absorber temperature Te falls, the controller shifts to a heat absorber temperature control mode to control the operation of the compressor 2 on the basis of the temperature of a heat absorber 9 and generate heat from an auxiliary heater 23.