Abstract: A heater with several common and inexpensive parts can be used in different vehicles having different heating requirements. Heating partition members for receiving and fixing PTC elements and non-heating partition members are substantially the same. The partition members are spaced apart at substantially equal intervals between a pair of frame members. Metal heat exchange fins are placed in a heat exchange air flow passage adjacent to the heating partition member. A resin dummy member is placed in non-heat exchange air flow passage located between non-heating partition members. The number of heating elements can be varied to suit vehicles of different sizes.

Abstract: An air passage flow control device according to the invention includes a plate member having at least one aperture through which air may pass, the degree to which the aperture is exposed being controlled by the positioning of a film member across at least a portion of the aperture. The positioning of the film member relative to the aperture is controlled by rolling and unrolling a portion of the film member on a rotating member that may be selectively moved back and forth across the aperture. By rolling and unrolling the film member to control the opening of the aperture, the present invention avoids relative lateral movement of those portions of the film member that are in contact with the plate member, thereby reducing the frictional forces. Further, the rotating member is configured to reduce the collection of particulate matter on the rotating member and the film member.

Abstract: A refrigerator for vehicles has a cooling unit and a cool-keeping container adapted to be detachably connected to the cooling unit and contain goods to be cooled. The cooling unit includes a refrigerator evaporator connected to a refrigeration cycle of an automotive airconditioning refrigeration cycle on a vehicle and a coldness accumulating medium supported in heat exchange relationship with the evaporator. During evaporator operation, the coldness is accumulated in the coldness-accumulating medium and simultaneously transferred to the goods in the cool-keeping container. When the goods are cooled to a desired temperature, the cool-keeping container can be disconnected from the cooling unit and taken out of the vehicle with a heat insulating lid closing an opening formed in the container for the insertion and removal of the goods into and out of the container.

Abstract: An air-conditioning and refrigerating system has a single vane-type rotary compressor, a single condenser, an air-conditioning evaporator and a refrigerating evaporator parallel to the air-conditioning evaporator. The compressor has main and auxiliary suction ports connected through air conditioning and refrigerating refrigerant return passages to the air-conditioning evaporator and to the refrigerating evaporator, respectively. The compressor is constructed such that the refrigerating refrigerant returned through the auxiliary suction port into a working chamber is mixed in the working chamber with the air-conditioning refrigerant returned through the main suction port into the working chamber before the refrigerating refrigerant is compressed in the working chamber.

Abstract: An air-conditioning and refrigerating system has a single compressor, a single condenser, an air-conditioning evaporator and a refrigerating evaporator parallel to the air-conditioning evaporator. The compressor has main and auxiliary suction ports connected through air conditioning and refrigerating refrigerant return passages to the air-conditioning evaporator and to the refrigerating evaporator, respectively. The compressor is constructed such that the refrigerating refrigerant returned through the auxiliary suction port into a working chamber is mixed in the working chamber with the air-conditioning refrigerant returned through the main suction port into the working chamber before the refrigerating refrigerant is compressed in the working chamber.

Abstract: A refrigerator for a vehicle has a coldness accumulator formed by a container with water therein and an evaporator selectively connectable to a refrigeration cycle of an air conditioner of the vehicle. The coldness accumulator is disposed in a refrigeration space defined in a heat-insulating housing having an openable door mounted thereon. The water is cooled to freezing temperature during vehicle operation to accumulate coldness which is utilized to keep the refrigeration space at a low temperature when the evaporator is disconnected from the refrigeration cycle or when the refrigeration cycle is not operated.