A vehicular air conditioning system includes an air conditioning case with internal flow path introducing air discharged from a blower and feeding the air into a passenger room, a cooling and heating heat exchangers cooling and heating the air flowing along the internal flow path, and a plurality of vents discharging cold and hot air passed through the cooling and heating heat exchanger into the passenger room. The internal flow path is formed in an up-down direction for air flow path to extend in the direction of gravity. The cooling and heating heat exchangers are installed sequentially from the lower to upper side in the direction of gravity to correspond to the air flow path. The vents discharge the cold and the hot air passed through the cooling and heating heat exchanger into the passenger room while distributing cold and hot air in a front-rear direction of a vehicle.

In a mobility including a negative pressure space and method for controlling a pressure of the mobility in which the mobility is used a general vehicle in normal times, and when a special situation such as transferring infectious disease patients occurs, an internal space includes a general space and a negative pressure space by a partition wall, so that the infectious disease patients are safely transferred through the negative pressure space and the spread of infectious diseases is prevented. As a result, the usability of a vehicle is increased, and it is possible to respond to such special situation.

An air conditioning system of a motor vehicle, having a housing with at least two independent air ducts formed therein, which are arranged separately from each other by at least one partition wall in the housing. A cooling heat exchanger is arranged in the housing such that it is flowed through by air, which can flow into the at least two independent air ducts. A heating heat exchanger is arranged in the housing such that it protrudes into the at least two independent air ducts and is flowed through by air of the at least two independent air ducts. The heating heat exchanger being an electrically operable heat exchanger, which is formed with several independently heated heat exchanger areas, so that the air flowing through an heat exchanger area is independently heatable and each independent air duct is provided at least one heat exchanger area.

A vehicle-body structure may include a floor panel constituting a floor of an occupant space, a center frame disposed to be higher than and away from the floor panel at a vehicle-width-direction central portion of the occupant space and extending in a vehicle front-rear direction, and a control device configured to control a control target unit mounted on an automobile. The control device may be arranged at a lower position than a vehicle front portion of the center frame.

An HVAC system for a vehicle is configured to draw air from an air inlet, to condition the drawn air, and to discharge the conditioned air to at least one discharge portion in the vehicle through a main flow path. The HVAC system includes a bypass flow path configured to connect a first side of the main flow path disposed at a side of the at least one discharge portion to a second side of the main flow path disposed at a side of the air inlet. The bypass flow path is configured to allow or block a flow of air through the bypass flow path.

A vehicular air conditioner includes a console duct and a rear floor duct configured to blow air discharged from a front seat blower to a rear seat passenger side and a rear floor side, respectively, a rear seat mode door configured to control air distribution from the front seat blower to the console duct and the rear floor duct, a rear seat blower installed in the console duct so as to increase an air flow rate and air pressure of the air blown to the rear seat passenger side, a rear seat console door installed in an internal passage of the console duct so as to adjust the air flow rate of air blown to the rear seat passenger side along the console duct, and a control part configured to control an opening position of the rear seat console door with respect to the console duct.

This disclosure provides an engineering vehicle and an air conditioning system thereof beneficial to improve comfortability of drivers. The air conditioning system includes: an air conditioner body, including a shell with first and second air outlets; a first air supply pipeline, a first end of the first air supply pipeline being connected to the first air outlet; first air support port(s), arranged at an inner front end of a cab of the engineering vehicle and connected to a second end of the first air supply pipeline; a second air supply pipeline, a first end of the second air supply pipeline being connected to the second air outlet; second air supply port(s), arranged at an inner rear end of the cab and connected to a second end of the second air supply pipeline; and a flow distribution device including a flow dividing portion located in the shell.

A vehicular air-conditioning device for cooling and heating includes a refrigerant circulation passage formed in a housing, an air circulation passage located in the housing and configured to perform heat exchange with the refrigerant circulation passage, and a controller configured to receive an interior temperature from an interior temperature sensor of a vehicle and to operate a first switching door and a second switching door. The air circulation passage includes a blower, a first flow path formed between a first duct part located at one end of the housing and the blower, the first switching door configured to selectively open the first duct part, a second flow path formed between a second duct part located at the other end of the housing and the blower, and the second switching door configured to selectively open the second duct part.

A vehicular air conditioning system includes: a refrigerant circulation line including first and second evaporators through which refrigerant can flow in a cooling mode, and first and second expansion valves configured to depressurize and expand the refrigerant introduced into each of the first and second evaporators; and refrigerant flow control part provided in front of the first evaporator and the first expansion valve and configured to control refrigerant flow. The first evaporator is used for cooling rear seat region of a passenger room and the refrigerant flow control part is configured to supply and block the refrigerant with respect to the first evaporator and the first expansion valve and is configured to block the refrigerant when the cooling governed by the first evaporator is controlled in a turn-off mode and supply the refrigerant to the first evaporator and the first expansion valve depending on the on/off condition of the cooling governed by the second evaporator.

An electric work vehicle includes a battery housing including a first battery housing portion, and an air cooling system. The battery housing includes a plurality of battery housing module compartments to house a plurality of battery modules, the air cooling system includes a first evaporator and a second evaporator, the air cooling system includes a first warm air path and a second warm air path, the first warm air path fluidly connects the first battery housing portion to the first evaporator to exhaust first warm air from the first battery housing portion to the first evaporator, and the second warm air path fluidly connects the first battery housing portion to the second evaporator to exhaust second warm air from the first battery housing portion to the second evaporator.