A vehicle heating, ventilating and/or air conditioning device (10) comprising a housing (12), in which at least two hot-air guiding ducts (18, 19) are formed for different vehicle interior regions, the hot-air guiding ducts (18, 19) being separated by a housing wall (28). A common heating device (30) and a common air treatment element (32) are provided which are arranged in each case in both hot-air guiding ducts (18, 19), the air treatment element (32) being arranged in the air flow downstream of the heating device (30). The air treatment element (32) has a dividing wall (34) which divides the air treatment element (32) into at least two part regions which are assigned to in each case one hot-air guiding duct (18, 19).

A refrigeration system for a vehicle is provided and includes inside and outside condenser circuits. The inside condenser circuit includes a first valve receiving a first portion of refrigerant out of a compressor, and a cabin condenser receiving and condensing the first portion from the first valve while heating an interior of a cabin. The outside condenser circuit includes: a second valve receiving a second portion of the refrigerant out of the compressor; an outside condenser receiving and compressing the second portion from the second valve; a reservoir downstream from the cabin condenser and the outside condenser receiving the first and second portions; a heat exchanger downstream from the reservoir; and a bypass valve connected in parallel with the heat exchanger. The heat exchanger and the bypass valve receive portions of the refrigerant from the reservoir. A control module controls positions of the first, second and bypass valves.

A vehicle heating device includes a heat storage material, a heat recovery unit, a footrest, and a heat controller. The vehicle heating device heats an occupant with heat stored in the heat storage material. The heat recovery unit recovers thermal energy from at least one of a heat source generated by a vehicle or a natural heat source from outside of the vehicle. The heat storage material stores the recovered thermal energy. The footrest is provided at a front portion of a vehicle seat disposed in a vehicle cabin, and has the heat storage material packed inside a heat insulating material. The heat controller heats the footrest by radiating the heat stored in the heat storage material at a predetermined timing with respect to the occupant to be on the vehicle.

A radiant heating system is provided for a motor vehicle. That radiant heating system includes a first surface configured to reflect IR radiation toward a motor vehicle occupant and a first IR heating element oriented to direct IR radiation toward the first surface whereby the motor vehicle occupant is warmed indirectly by the IR radiation emitted from the first IR heating element.

A heating system for a motor vehicle having an electrical supply circuit and an engine liquid cooling assembly includes a housing structure having an inlet duct, an air outlet duct and means such as a fan for creating a flow of air into the inlet and out of the outlet. The electric heater is capable of being heated to 1,800 F. in three (3) seconds or less disposed in said air flow to heat the air passing therethrough. The system further includes means for heating the flow of air by exposure to heated coolant and means for deactivating said electric heater when the air flow is being heated by the heated coolant.

A heating system for an automobile that selectively produces heat quickly. The controlled vehicle heating system includes a resistive heating element located within the main duct of a vehicle wherein all vents of the vehicle are connected to the main duct. The resistive heating element is connected to the vehicle's electric heating and cooling system and battery. The system includes a control circuit with a temperature sensor designed to monitor the temperature of the engine. The control circuit is operably connected to the resistive heating element and a heater fan within the vehicle. The control circuit is designed to deactivate the resistive heating element and heater fan when a predetermined temperature is reached. A thermostatic actuator is connected to the resistive heating element which allows a user to selectively control the operation of the resistive heating element. The user can then quickly and selectively control the heat of the car.

A control unit, at the time of a heating operation, pressure-reduces refrigerant that has passed through an indoor condenser, by an expansion valve, and thereafter introduces the refrigerant into an outdoor heat exchanger to thereby perform heat exchange with outside air. Further, the control unit, at the time of a defrosting operation, introduces high-temperature and high-pressure refrigerant compressed by a compressor into the outdoor heat exchanger to thereby remove frost adhering to the outdoor heat exchanger. Furthermore, the control unit determines whether to perform the defrosting operation or not, based on the amount of electric power required for the defrosting operation.

In a first aspect, a vehicle HVAC system includes: a housing that defines at least first and second air conduits to a vehicle interior compartment; and at least first and second heat rods that each traverses the first and second air conduits, wherein a first positive temperature coefficient along a length of the first heat rod is greater at the first air conduit than at the second air conduit, and wherein a second positive temperature coefficient along a length of the second heat rod is greater at the second air conduit than at the first air conduit.

A vehicle temperature control system, especially for a hybrid vehicle, includes a first heat transfer medium circuit (12) including an internal combustion engine (16), a heater (18) and one or preferably a plurality of heat transfer areas (32, 34, 36) for transferring heat between a first heat transfer medium, circulating in the first heat transfer medium circuit (12), and a first group of system areas to be thermally treated. A second heat transfer medium circuit (14) includes a heat one or preferably a plurality of heat transfer areas for the transfer of heat between a second heat transfer medium, circulating in the second heat transfer medium circuit (14), and a second group of system areas (46, 48, 50) to be thermally treated. A heat transfer medium circuit heat exchanger unit (58) transfers heat between the first heat transfer medium and the second heat transfer medium.

A heater device includes: a distance specifying portion that specifies a distance between a sensing subject, i.e., an occupant and a heater main body as a sensed distance; and a moving mechanism that moves the heater main body. The heater device further includes a heater position control portion that controls the moving mechanism such that the distance between the sensing subject, i.e., the occupant and the heater main body is adjusted to a target distance based on the sensed distance, which is specified by the distance specifying portion.