Abstract: An air conditioning apparatus for an automotive vehicle includes a case having an opening which is formed at a side wall of the case. A heater core is installed in the case; and a mix door assembly detachably is installed in said case through the opening. The mix door assembly is adapted to vary a ratio of quantity of air passing through said heater core to a quantity of air bypassing said heater core. The mix door assembly including a housing, a mix door installed in the housing, and a slide mechanism installed in the housing. The slide mechanism is adapted to receive a rotational force and slide the mix door with respect to the housing according to the received rotational force to vary the ratio.

Abstract: When the packing member (43) made of elastic material is extended to an outer circumference of the door shaft (41) or provided on the bearing hole (52) side, clearance formed between the door shaft (41) and the bearing hole (52) is decreased. Due to the foregoing, as the packing member (43) is an elastic body, even if the packing member (43) comes into contact with the door shaft (41) or the bearing hole (52), the door (40) can be rotated. Accordingly, clearance between the door shaft (41) and the bearing hole (52) can be set at a sufficiently low value, and the leakage of an air from the clearance can be decreased.

Abstract: The invention provides an air mixing damper apparatus and an air conditioning apparatus for vehicles where the temperature of discharged air can be changed linearly with respect to the operation of an actuator lever. A rotation speed adjustment mechanism is disposed between a plate door type air mixing damper 43A for opening and closing an air introducing face 42a of a heater core 42, and a rotation type lever 48 for an actuator 47 driving the air mixing damper 43A, for adjusting the rotation speed at an initial opening stage X and a final opening stage Z of the air mixing damper 43A, to a speed lower than at an intermediate opening stage Y.

Abstract: An air distribution apparatus for a vehicle includes a partition disposed within a housing which separates a first longitudinal airstream from a blower and a cooling element into first and second airstreams, each separately directed through a heater element to form first and second recombined airstreams. The partition redirects the first and second recombined airstreams to a second direction angularly disposed from the first direction of air flow to enable the first and second output airstreams to be separately transmitted to first and second separate zones within the vehicle. Independently movable blend valves are interposed in the first and second airstreams to provide independent selection of temperature of the first and second output airstreams.

Abstract: An air conditioner for vehicles is disclosed. This air conditioner feeds recirculation and fresh air in a separate air feeding or a mixed air feeding using a single intake duct and a single intake control door, thus improving its heating and defrosting efficiency during a heating mode operation, and preventing an undesired discharging of white fogging from the vents during a cooling mode operation by changing its air feeding mode from a recirculation air mode to a fresh air mode. This air conditioner also has a simple construction and is reduced in its production cost.

Abstract: An air-conditioning system for a passenger cell of a vehicle includes an evaporator, for cooling an air stream, arranged in succession with a heat exchanger for heating the air stream. The heat exchanger has a heating medium flowing through it permanently. At least one air-mixing space is directly adjacent to the heat exchanger and has a warm-air inlet, covering at least part of the air outlet surface of the heat exchanger, and a cold-air inlet, forming the mouth of a cold-air duct bypassing the heat exchanger. Control members set the opening cross sections of the inlets.

Abstract: A vehicle air conditioner has an actuator for driving an air mixing door and various mode switching doors. An automatic range and a manual range are set in different operating angle ranges of the actuator. In the automatic range, an air outlet mode is automatically switched in accordance with an opening degree of the air mixing door. On the other hand, in the manual range, a multi-mode or a defroster mode is manually set, regardless of the opening degree of the air mixing door. In the manual range, air is simultaneously blown from all openings such as a face opening, a foot opening and a defroster opening in the multi-mode, and air is blown from the defroster opening in the defroster mode.

Abstract: An air partitioning device for a vehicle heating, ventilation, and air-conditioning system to divide a hot air stream into separate portions comprises an L-shaped front portion including a base leg and a dividing leg, and also comprises a tail portion extending from a back of the front portion, the tail portion oriented angularly to the dividing leg.

Abstract: A heating, ventilating, and air conditioning (HVAC) assembly having a housing defining first and second quadrants. An air mixing door is mounted to the housing downstream of an inlet and upstream of an outlet. The air mixing door has a first position directing substantially all of the air through the first quadrant, a second position directing substantially all of the air through the second quadrant, and a third position directing a flow of air through both of the first and second quadrants. A first seal is mounted to a first side of the air mixing door and a second seal is mounted to a second side of the air mixing door. A diffuser is mounted to at least one of the sides of the air mixing door and has a plurality of passageways to interrupt a flow of air passing around the air mixing door when the air mixing door initially moves from one of the first and second positions to the third position, thereby controlling an initial flow of air into at least one of the quadrants.

Abstract: In a vehicle air conditioner, two foot openings are provided in right and left wall portions of a case, and are opened and closed by two foot doors, respectively. Each door surface of the foot doors is moved along a surface of the right and left wall portions for opening and closing the foot openings. A face opening is provided in a top wall part of the case to be opened an closed by a face door. An operation locus of the foot doors is overlapped with that of the face door when being viewed from a direction perpendicular to the door surface of the foot door, while the face door is operated between the foot doors to have a clearance between the face door and each foot door.

Abstract: A heating, ventilating, and air conditioning (HVAC) assembly having a housing defining first and second quadrants. An air mixing door is mounted to the housing downstream of an inlet and upstream of an outlet. The air mixing door has a first position directing substantially all of the air through the first quadrant, a second position directing substantially all of the air through the second quadrant, and a third position directing a flow of air through both of the first and second quadrants. A first seal is mounted to a first side of the air mixing door and a second seal is mounted to a second side of the air mixing door. A diffuser is mounted to at least one of the sides of the air mixing door and has a plurality of passageways to interrupt a flow of air passing around the air mixing door when the air mixing door initially moves from one of the first and second positions to the third position, thereby controlling an initial flow of air into at least one of the quadrants.

Abstract: A door assembly (30) for a vehicle HVAC system comprises a shaft (140) made of a first material and having an axis (144) of rotation. A first door (142) projects from the first shaft (140) and is made of the first material. The first door (142) is molded together with the shaft (140). A sleeve (150) is made of a second material that has a lower melting point than the first material to enable the sleeve to be molded over the shaft (140). The sleeve (150) is disposed coaxially about the shaft (140) and is rotatable about the axis (144) relative to the shaft. A second door (152) projects from the sleeve (150). The second door (152) is made of the second material and is molded together with the sleeve (150). The second door (152) is rotatable relative to the first door (142).

Abstract: An air guide box, in particular for a heating, air conditioning and/or ventilating installation in a motor vehicle, comprising at least an air treating device (10, 12), at least an air channel (20) extending through the air treating device (10, 12), and at least an air channel (30) bypassing the air treating device (10, 12) and at least two outlet channels (40, 50), emerging in a gap (3) such that each time an outlet channel (40, 50) is substantially opposite one of the other channels (20, 30), a device (1) mobile about an axis (2) being arranged in the gap (3), which device has an air guiding element in the form of a channel (4, 5, 6, 7) and provides, in specific positions, an air passage with practically no pressure drops between two mutually opposite channels (20, 40; 30, 50), and an air passage subjected to pressure drops between other opposite channels (30, 50; 20, 40).

Abstract: A ventilation controlling apparatus using a slide door made of a flexible film member to solve imperfect slide action attributable to film member rigidity degradation on the fringe of an aperture. The slide door is movably disposed inside a casing which forms an air passage, and the slide door is composed of the flexible film member provided with an air-circulation aperture. Ventilation of the air passage is controlled by varying an area of blending or connection between the aperture and the air passage in accordance with movement of the slide door. A rigid support member is fitted around the fringe of the aperture on the film member, thereby enhancing rigidity of the aperture fringe.

Abstract: An air-conditioning device for a vehicle comprising in a housing (13) a first conduit (20) for transmitting a cool air flow (F1) and a second conduit (22), wherein is installed a heat exchanger (24) for transmitting a warm air flow (F2). The conduits (20, 22) are interposed between an air intake (14) and a mixing zone (31) delivering mixed air. A system splitting (40) the air flows (F1, F2), delivered by the conduits (20, 22) is provided at the junction of the two conduits and in the second conduit (22) downstream of the heat exchanger (24). The splitting system (40) comprises transversely alternating a plurality of cool air passages (46) and a plurality of warm air passages (49). The passages emerge into two separate mixing zones (31, 25).

Abstract: The subject invention includes a heating, ventilating, and air conditioning (HVAC) assembly having a housing with an inlet and at least one outlet for directing a flow of air into a passenger compartment. An evaporator core is disposed within the housing downstream of the inlet and upstream from the outlet. A heater core is disposed within the housing between the evaporator core and the outlet with the heater core having an upstream surface generally facing the evaporator core and a downstream surface generally facing the outlet. The heater core includes a first portion and a second portion being angled relative to the first portion such that the upstream surface of the first portion at least partially faces the upstream surface of the second portion to define an angled heater core facing the evaporator core wherein air flowing over the upstream surfaces is evenly distributed across both of the first and second portions, thereby increasing the effectiveness of the heater core.

Abstract: A mix door (5) is arranged in air passages (10, 11) of an automotive air conditioning device. The mix door (5) is arranged to extend in a direction to shut an air flow blown from the upstream air passage (10) and swelled in a downstream direction with a predetermined radius of curvature. The door (5) is guided by arcuate cam grooves (19) and driven upward and downward to achieve open/close operation with the aid of a sliding mechanism (M). Compact construction, reduction in air flow resistance, smoothed handling, high sealing and high temperature controlling are achieved.

Abstract: The present invention relates to an air flap (10) for an air-ducting device, in particular a vehicle heating, ventilation and/or air-conditioning system, with at least two ducts (2, 4), which have a common outlet zone, comprising a region (12) which allows part of the outlet zone to be divided in a sealed manner in each position of the air flap (10), the region (12) being smaller than the area of the air flap.

Abstract: Disclosed herewith is an air conditioner housing for automobiles and air conditioner using the same. The air conditioner housing includes a housing body having evaporator and heater core accommodating spaces. Upper and lower air passages are defined by partitioning the inner air passage of the housing body. A front foot vent is formed at the air outlet end of the lower air passage, and defrosting and face vents are formed at the air outlet end of the upper air passage. A front air passage is formed by a guide wall slantingly upwardly extended to partition the space behind the heater core accommodating space, and a rear air passage is formed behind the guide wall to communicate with the upper and lower air passages. A combined door of foot and combination door is positioned on a boundary of the rear air passage and the lower air passage.

Abstract: An air flow mixing system for a vehicle air conditioning system having a distribution door to force air from a first air flow to mix with a second air flow of different temperature proximate a merging region in the air conditioning system. In one embodiment, the distribution door has an arcuate passageway or scoop to forcibly route air from the first airflow to the second airflow. In a second embodiment, the distribution door has at least one projecting channel to divide each of the first and second air flows into a plurality of alternating flow paths to promote heat transfer and mixing of the two airflows. In each embodiment, the pivoting distribution door facilitates heat transfer between the airflows resulting in a more even temperate airflow emerging from the merging region.

Abstract: A defroster/face cool air passage for introducing cooled air from an evaporator to a defroster opening portion and a face opening portion by bypassing a heater core, and a foot cool air passage for introducing cooled air from the evaporator to a foot opening portion by bypassing a heater core, are formed independently from each other. The foot cool air passage is located at sides of the heater core in a vehicle right-and-left direction. The cooled air from the foot cool air passage is mixed with warmed air having passed through the heater core at an inlet of the foot opening portion. Accordingly, pressure loss at a foot mode in an air conditioning unit with a central installation layout is reduced, and a mounting performance on a central portion of a vehicle instrument panel is improved.

Abstract: An air conditioning apparatus for an automotive vehicle includes a heater core and a mix door assembly installed in a case. The mix door assembly is detachably installed in the case through an opening formed at a side wall of the case. The mix door assembly constitutes a housing, a mix door and a slide mechanism. The slide mechanism is arranged to slide the mix door according to a received rotational force so as to vary the ratio of warm air to quantity and cool air quantity.

Abstract: A motor vehicle cabin has four seat positions and a heating and ventilating apparatus which includes means for producing hot and cold air streams, temperature control means, air distribution ducts having outlets at different points in the cabin at each seat position, and distribution means for adjustably distributing the mixture of the cold and hot air streams between the various air distribution ducts. These ducts include ducts which are open in at least two different points in the rear seat positions, each of which has its own temperature control means for adjusting the air temperature at that position, and means for adjusting the flow of air to that position.

Abstract: A system for supplying air to first and second regions of a vehicle passenger compartment, has a first fan, a heater device, and first and second air conduits. The heater device has a first air inlet and outlet for air from the first fan and a second air inlet and outlet for recirculating air within the passenger compartment. The first and second outlets of the heater device supply air through the first and second air conduits to the first and second regions of the said vehicle. The second air conduit is connected to said second air outlet of said heater device via a second fan operable in use to selectively supply air through the second conduit to the second region of the vehicle.

Abstract: In a vehicle air conditioner, a defroster opening and a foot opening are provided at both right and left sides of a face opening. An outlet portion of a warm air passage has an enlarged portion offset to right and left side of the outlet portion of the cool air passage. During a bi-level mode, cool air from the cool air passage flows toward the face opening, and warm air from the warm air passage flows toward the foot opening, On the other hand, during a foot/defroster mode, cool air from the cool air passage and warm air from the warm air passage are mixed at an Inlet portion of the foot opening and the defroster opening and the mixed air is introduced into the foot opening and the defroster opening.

Abstract: In an apparatus for distributing air flowing along a first path, the first path splits into second and third paths, so that both the second and third paths diverge from the first path. The second and third paths are at an angle of less than 180° to one another. A first door, is across the second path; and a second door, is across the third path. A common operating device rotates both doors, such that air is able to flow from the first path into the second and third paths, the flow being dependent on the position of rotation of the doors.

Abstract: The present invention provides anchor tabs at opposite ends of a film member that are anchored to side faces of a door plate of a sliding door. Draft deflectors prevent the inflow of air to between the anchor tabs and the side faces of the door plate. Thus, inflow of air to between the anchor tabs of the film member and the side faces of the door plate is prevented. Also, fluctuations in pressure difference between the inner and outer sides of the anchor tabs are suppressed, and the production of extraneous noise caused by self-excited vibration of the anchor tabs at the ends of the film member is suppressed.

Abstract: An air conditioner for a vehicle comprises an air conditioner housing and an air intake formed in the air conditioner housing. An evaporator is disposed downstream of the air intake and an heater core is disposed downstream of the evaporator. Vent and foot outlets are formed in the housing downstream of the evaporator. The air conditioner further includes a first passage defined between the evaporator and the heater core and a guide plate disposed downstream of the heater core for directing hot air heated by passing through the heater core toward cool air not passing through the heater core.

Abstract: The invention relates to a heating or air-conditioning system for a motor vehicle, having a heater for generating warm air, at least one cold air duct leading past the heater, and air mixing spaces provided adjacent to the heater. The air duct is divided into sub-ducts for guiding air into the mixing spaces. The mixing spaces are arranged in the direction of flow and are separated from one another by at least one dividing wall. Cold air and warm air are mixed to a specific temperature in the mixing spaces by means of airflow control elements and then fed to an assigned air-conditioned zone via an air duct and air outlet nozzle.

Abstract: In an air conditioning apparatus for a vehicle, a first cool air bypass passage is provided at an upper side of a heater core, and a second cool air bypass passage is provided at a lower side of the heater core. Cool air from the first cool air bypass passage and warm air having passed through the heater core are mixed in a first air mixing chamber, and a ratio between an amount of cool air and an amount of warm air is adjusted by an air mixing film member. Further, cool air from the second cool air bypass passage and warm air from the heater core are mixed in a second air mixing chamber, a ratio between an amount of cool air and an amount of warm air is adjusted by an air mixing door, and the second air mixing chamber is provided at an immediately downstream air side of the heater core. Thus, in the air conditioning apparatus, a pressure loss in a ventilation system can be reduced.

Abstract: An air distribution module for a vehicle heating, ventilation and air-conditioning system receives a layered air-flow of an upper and lower layer for delivery to a vehicle interior. The air distribution module includes a housing defining a central plenum and an air inlet at an upstream side thereof for receiving the layered air-flow of first and second layers. At least a first arcuate duct is coupled to the housing and defines an inner passage wherein the arcuate duct further includes an inlet coupled to a downstream side of the housing and in fluidic communication with the plenum. The duct further includes an inversion loop for inverting the air-flow layers and an outlet for discharging the air into the vehicle interior.

Abstract: A distributor box for a heating, ventilating and/or air conditioning apparatus for a passenger compartment of a motor vehicle, comprises an air inlet for admitting a heated airflow and/or a cold airflow into the distributor box therethrough, a plurality of air outlets for leading the airflow to different zones of the passenger compartment, and at least one distributor valve pivotally mounted within the distributor box for pivoting movement between a plurality of positions whereby to distribute said airflow between the plurality of outlets. The distributor valve is provided with vane members on at least one face surface thereof for guiding the airflow from the air inlet toward at least one of the air outlets. The vane member is integrally formed on the distributor valve.

Abstract: The invention relates to a heating or air-conditioning system and method for ventilating an occupant compartment of a vehicle having a climatic box in which a heat exchanger is accommodated, through which air can flow, and in which at least one air mixing chamber is constructed, which has an air inflow opening for warm air flowing through the heat exchanger and an air inflow opening for cold air flowing around the heat exchanger as well as outlet openings for mixed air, of which at least one outflow opening is arranged on the bottom in the air mixing chamber and at least one outflow opening is arranged on top in the air mixing chamber, and having closing members controlling the opening cross-sections of the inflow openings.

Abstract: A vehicle air conditioning apparatus having two pair of rotatable flow control doors for separately controlling and varying the temperature and flow of air supplied to two different zones of the vehicle interior. Each pair of flow control doors are linked together and operated by a single actuator device.

Abstract: An air-conditioning system alternately produces a cooled air stratum and a heated air stratum as viewed from an air outlet opening, and the guide length a1 of a first guide wall is set from 0.05 time or more to 0.5 times or less than the length L1. The guide length a2 of a second guide wall is set from 0.05 time or more to 0.5 times or less than the length L2. Consequently if the air mixing chamber has a small capacity (the length parallel to the direction of air flow), it is possible to mix the heated air and the cooled air sufficiently.

Abstract: A heater/cooler unit of an automotive air conditioning system for use in a vehicle is disclosed. The unit includes a casing defining an air flow passage for flow of air. The casing includes an enlarged lower portion and a reduced upper portion, and an air inlet opening and an air outlet opening communicating with the air flow passage. The unit also includes an evaporator in the air flow passage. The unit also includes a heater in the air flow passage with an air flow space being formed between the heater and the evaporator. The unit also includes a ventilation opening formed in the casing. The unit also includes a pair of heat openings formed in the casing, one on each side wall above the heater. The unit also includes a pair of heat ducts. The overall lateral size of the unit can be minimized.

Abstract: A vehicle air conditioner has a case and a heater core disposed in the case substantially horizontally. The case has a center face opening formed in a side wall of the case at a substantially same height as the heater core, a defroster opening and a foot outlet. A warm air guide is disposed above the heater core to guide warm air passing through the heater core. Warm air guided by the warm air guide is mixed with cool air bypassing the heater core, and flows toward the defroster opening through an air port formed by an end portion of the warm air guide at a substantially same height as the warm air guide. Therefore, an opening area of the air port is simply increased by reducing a length of the warm air guide without increasing a size of the vehicle air conditioner. As a result, a sufficient amount of air is introduced into the defroster opening.

Abstract: In a vehicle air conditioner, two foot openings are provided in right and left wall portions of a case, and are opened and closed by two foot doors, respectively. Each door surface of the foot doors is moved along a surface of the right and left wall portions for opening and closing the foot openings. A face opening is provided in a top wall part of the case to be opened an closed by a face door. An operation locus of the foot doors is overlapped with that of the face door when being viewed from a direction perpendicular to the door surface of the foot door, while the face door is operated between the foot doors to have a clearance between the face door and each foot door.

Abstract: In an automotive air conditioner, there is provided an air guide arrangement for achieving an effective mixing between cooled air from an evaporator and warmed air from a heater under a bi-level mode. The air guide arrangement is placed in the vicinity of an outlet opening of a warmed air passage extending from the heater. The air guide arrangement forces a warmed air from the outlet opening of the warmed air passage to effectively mix with a cooled air which flows in a direction from the evaporator toward a ventilation air outlet opening.

Abstract: In a vehicle air conditioner, an interior unit for performing air-conditioning operation in a passenger compartment is disposed inside an instrument panel of the vehicle. A blower is disposed at a vehicle rear side in the interior unit, and a heat-exchanging member for performing a heat exchange with air is disposed in the interior unit at a vehicle front side of the blower. Because the blower and the heat-exchanging member are arranged in the vehicle front-rear direction, a vertical dimension of the interior unit can be made smaller.

Abstract: In a vehicle air conditioner, a case member of an inside/outside air switching portion is disposed at an approximate center in an interior unit in a vehicle width direction, to define an air passage extending in the vehicle width direction. An outside air suction port is provided in the case member, and first and second openings are opened in the case member at both side ends of the air passage in the vehicle width direction. One of the first and second openings is used as an inside air suction port, and the other one thereof is used as an outlet passage port. In addition, the outlet passage port of the case member is coupled to a suction port of a blower through a connection duct.

Abstract: An automotive air conditioner for improved assembly, work efficiency, and reduced manufacturing costs has a slide type air mixing door. An upstream side case is provided which defines therein an upstream air passage. A downstream side case is provided which defines therein first and second downstream air passages which extend in parallel to an air mix chamber. An evaporator is installed in the upstream air passage, and a heater core is installed in the first downstream air passage. A mixing door assembly is detachably disposed between the upstream and downstream side cases. The mixing door assembly constitutes a cassette which comprises a door housing, a slide door member sliding in the door housing and a sliding device for driving the slide door member.

Abstract: A mix door D, which is arranged in a limited space defined between an upstream air passage 10 in which an evaporator 3 is installed and a downstream air passage 11 in which a heater core 4 is installed, is of a sliding type. By guiding a door proper 12 by using a cam groove, a seal member 15 bonded to the door proper 12 is pressed against a contacting member 13 only when the door proper 12 assumes its close position. Smoothed operation of the door proper 12 is achieved with a compact construction of a unit, and sealing and temperature controlling performance is increased.

Abstract: A vehicle air conditioner has a blower unit and an air conditioning unit having a case and a heater core disposed in a substantially horizontal direction in the case. The case has a foot opening at an upper side of the heater core. A foot passage and a foot duct are disposed at a vehicle front side of the case to extend downwardly from an upper portion of the case to a bottom portion of the case. The foot duct has foot outlets at a lower portion thereof. In a foot mode in which the foot opening is opened, air flowing at an upper side of the heater core flows into the foot passage through the foot opening, flows through the foot duct, and is directly blown toward a foot portion of a passenger in a passenger compartment through the foot outlets. As a result, heating feeling is improved, and a size of the air conditioner in a vehicle width direction is reduced.

Abstract: A device for heating and/or air conditioning the passenger compartment of a motor vehicle comprising a first fan able to send a first air flow through a first part of a heating radiator and a second fan able to send a second air flow through a second part of this radiator, distribution shutters are provided for distributing the first and second air flows between a deicing outlet, a ventilation outlet and a feet-level outlet. The device can generate two independent air flows and send them to the top part and bottom part of the passenger compartment of the vehicle.

Abstract: A motor-vehicle heating and/or air conditioning device has a cold-air duct (12), a hot-air duct (14) housing a heating radiator (18), a mixing chamber (28) communicating with respective air outlets (24, 26) of the ducts, and mixing means which comprise at least one flap (30) configured in such a way that, when the flap passes from a “hot” position to a “cold” position, the shutter wall (34) of the flap first of all clears a region of the outlet (24) of the cold-air duct which is close to the outlet (26) of the hot-air duct, so as to promote the mixing of a cold airflow (F1) and of a hot airflow (F2).

Abstract: A heating/air-conditioning device suitable for housing in a vehicle instrument panel includes an evaporator, a heating radiator, an air-distribution means with first and second deflector means, and a blower. The blower sends an airflow through the evaporator and the heating radiator. The evaporator has a principal surface in a first principal plane and the heating radiator has a principal surface in a second principal plane. The evaporator is traversed by the airflow in a first direction substantially perpendicular to the first principal plane. The first deflector means then divert the airflow into a second direction substantially perpendicular to the second principal plane with part of the airflow passing through the heating radiator. The second deflector means then diverts the airflow into a direction substantially parallel to the second principal plane. The air-distribution means diffuses the airflow into a passenger compartment of the vehicle.

Abstract: In an automobile heating, ventilation, and air conditioning unit, an air-purifying filter is slanted and arranged in an upstream air duct defined in a HVAC unit case, so that the upstream end of the filter is supported by an upper supporting portion fixedly connected to the unit case for supporting the evaporator core and so that the downstream end of the filter is located away from the lower end of the evaporator core. Foot vent ducts are partitioned and formed in the unit case, utilizing the dimensional difference between the evaporator and heater cores in both height and width dimensions. Temperature-adjustment ribs, slanted and inwardly extending from the inner periphery of the forward wall of the unit case above the heater core, are provided close to foot vent outlets, so that the foot vent outlets face to a space defined just downstream of the temperature-adjustment ribs.

Abstract: An automotive climate control system is disclosed. As long as an ignition switch is off, a bypass (14) is closed (in this state, a ratio between warm air and cool air is a maximum when the automotive climate control system is activated.), the blowout is set to defrost mode and the introduced air is set to external air mode regardless of the preceding modes of blowout and introduced air (when the ignition switch is on). As a result, the refrigerant leaking from an evaporator (12) flows to an external air inlet (23) smaller in air resistance. Even in the case where the ignition switch is off, therefore, the leaking refrigerant is prevented from flowing into the cabin.

Abstract: A device for heating and/or air conditioning the passenger compartment of a motor vehicle comprises a first fan (16) able to send a first air flow (F1) through a first part of a heating radiator (14) and a second fan (32) able to send a second air flow (F2) through a second part of this radiator, distribution means (42, 62) being provided for distributing the first and second air flows between a deicing outlet (52), a ventilation outlet (54) and a feet-level outlet (56). The device makes it possible to generate two independent air flows and to send them to the top part and bottom part of the passenger compartment of the vehicle.