Abstract: In an air conditioning unit that cools a motor of a fan by partially introducing an air blown by the fan into the motor, a case has a wall for defining an air introduction chamber adjacent to an air passage. The air introduction chamber has an air inlet and an air outlet so that the blown air is partially introduced into the motor from the air passage through the air introduction chamber. The wall of the air introduction chamber slopes downwardly toward the air inlet and defines a lowest portion within the air introduction chamber. The air inlet is positioned adjacent to the lowest portion of the air introduction chamber.

Abstract: A vapor compression type refrigeration apparatus is provided, in which refrigerant leakage is detected at an early stage. A temperature difference related to the theoretical heat dissipation of the condenser is compared with the actual temperature difference in heat dissipation (temperature difference between the condensation temperature and the outside-air temperature) of the condenser to determine whether there is a refrigerant leak.

Abstract: In an air conditioning unit that cools a motor of a fan by partially introducing an air blown by the fan into the motor, a case has a wall for defining an air introduction chamber adjacent to an air passage. The air introduction chamber has an air inlet and an air outlet so that the blown air is partially introduced into the motor from the air passage through the air introduction chamber. The wall of the air introduction chamber slopes downwardly toward the air inlet and defines a lowest portion within the air introduction chamber. The air inlet is positioned adjacent to the lowest portion of the air introduction chamber.

Abstract: A vapor compression type refrigeration apparatus is provided, in which refrigerant leakage is detected at an early stage. A temperature difference related to the theoretical heat dissipation of the condenser is compared with the actual temperature difference in heat dissipation (temperature difference between the condensation temperature and the outside-air temperature) of the condenser to determine whether there is a refrigerant leak.

Abstract: In a vehicle air conditioner, an air conditioning case has a first front foot air outlet from which air is blown toward a front-seat foot area of a passenger compartment, and a rear foot passage for introducing air toward a rear-seat foot area of the passenger compartment. A rear foot air outlet is provided at a most downstream end of the rear foot passage, and a second front foot air outlet from which air is blown toward the front-seat foot area is provided in the rear foot passage at a position adjacent to the first front foot air outlet. Thus, a ratio between an air amount blown toward the front-seat foot area and an air amount blown toward the rear-seat foot area is readily adjusted by changing an opening area of the second foot air outlet.

Abstract: In a vehicle air conditioning apparatus where temperature of air blown toward a front seat side and temperature of air blown toward a rear seat side of the passenger compartment are independently controlled, a switching door for generally partitioning a downstream warm air passage of a heater core into first and second air passages is disposed at an air outlet side of the heater core. When heating capacity for the front seat side of the passenger compartment is necessary to be increased, the switching door is operated to a rear shutting position so that all air heated by the heater core can be introduced toward the front seat side through the first and second air passages of the warm air passage.

Abstract: A vehicular air-conditioner provided with a rear face duct and rear foot duct, wherein the dimensions of the vehicular air-conditioner in the lengthwise direction are reduced by arranging the rear face duct (26) and foot duct (31) to appear to overlap at the parts extending downward when viewed from the side. Specifically, the rear face duct (26) is bent to the vehicle front to fit in the space formed by splitting the foot duct 31 into two from an intermediate position of the downstream side to form the right side duct portion (31a) and the left side duct portion (31b).

Abstract: A vehicle air conditioning apparatus includes a shutting door for interrupting the air flow from a rear face air outlet and a rear face shutting switch for generating a shutting signal when the shutting door closes the rear face air outlet. An electronic control unit (ECU) controls the operation of a rear air mixing door so that communication between a rear bypass passage and a warm air passage downstream from a heater core is interrupted by the rear air mixing door when the shutting signal is generated from the rear face shutting switch.

Abstract: A blower unit includes a case divided into an upper case portion having an air introduction port, a lower case portion for accommodating a fan, and a bell-mouth portion interposed between the upper and lower case portion portions. An air leading port is provided in the bell-mouth portion, so that air sucked from the air introduction port is introduced to the fan through the air leading port. An attachment boss portion onto which a motor is attached is formed to protrude from an outer wall surface of the upper case portion. Air blown by the fan flows through a duct which is divided into a first member integrated with the bell mouth portion and a second member integrated with the lower case portion. The first member extends from the bell mouth portion obliquely to cover the attachment portion, and the second member extends from the lower case portion in the same direction as the first member to be engaged with the first member.

Abstract: In an air conditioning apparatus for a vehicle, a heater core is disposed in an air conditioning case so that a cool air bypass passage through which air bypasses the heater core is provided at an upper side of the heater core. When a foot/defroster mode is set, a defroster door for opening and closing a defroster opening is rotated to an intermediate position between a fully opening position and a fully closing position of the defroster opening. Therefore, a first air passage through which air from the cool air bypass passage flows into the defroster opening is provided between an inner wall portion of the air conditioning case and a top end of the defroster door. Further, a second air passage through which air from an air mixing chamber flows into the defroster opening is provided between an inner wall portion of the air conditioning case and a side end of the defroster door, and an amount of air passing through the second air passage is set to be larger than that of the first air passage.

Abstract: According to the present invention, in an air conditioning apparatus setting a double laminar mode in which an inside air and an outside air are blown while being partitioned, when the maximum heating state is set during an air outlet mode in which air is blown out simultaneously from both of a foot opening portion toward feet of a passenger and a defroster opening portion toward a windshield, a passage for conditioned air is partitioned into a first air passage for the inside air and a second air passage for the outside air. The first air passage is communicated with the foot opening portion, and the second air passage is communicated with the defroster opening portion.