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: In an air passage opening/closing device for a vehicle air conditioner, a driving member is disposed to apply driving force for a reciprocating movement of a film member to at least one position of the film member, and a guide member is provided in an air-conditioning case to guide the reciprocating movement of the film member. The film member has a flexible performance to move in a bend path, and has a rigidity to be moved along the guide member when pushing force from the driving member is applied to the film member. Thus, the air passage opening/closing device using the film member has a simple structure without a film-winding mechanism.

Abstract: The air conditioning installation has air treatment and distribution means in a housing with air outlets on an upper face. De-icing and central aeration ducts are in an oblong diffusion unit above the upper face of the housing and under the upper fascia of the dashboard. This upper fascia has a diffusing surface in excess of 1.5 dm2 and preferably in excess of 2.5 dm2. In an embodiment, the diffusing surface is produced by multiple perforations.

Abstract: A ventilation controlling apparatus uses a flexible film member as a slide door and an air casing design profile, to prevent generation of popping or cracking noises from emanating from the slide door due to air pressure changes against the slide door within the casing. Internal lattices may control the position of the flexible slide door. An aperture for ventilation is opened and closed by moving the slide door inside a casing. Sealing surfaces on the inner side of circumferential edge-sealing portions located at the rear and front sides of the aperture in the moving direction of the slide door are made to have a shape protruding or angled more to the downwind side of the aperture at a central portion than at end portions, with respect to a direction orthogonal to the moving direction of the slide door.

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: 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 upper mixing region (210) and a lower mixing region (214) are fed with hot air via a radiator (203) and with cold air by way of respective bypass ducts (205, 208). Respective mixing flaps (212, 219) make it possible to adjust the temperature separately in the two mixing regions, from where the treated air is sent into different parts of the passenger compartment of the vehicle. According to the invention, the two bypass ducts (205, 208) pass below the radiator (203) which makes it possible to minimise the length of the path for the hot air between the radiator and the de-icing outlet duct (221) situated at the upper part of the casing (200) of the installation, and consequently to accelerate a de-icing or demisting of the windscreen required urgently for reasons of safety.

Abstract: The invention relates to a device for air-conditioning a cabin (3) of a motor vehicle, comprising an air-conditioning unit (5) installed in front of the dashboard (2), able to be supplied with external air and/or with recycled air taken from the cabin and passing through a recycling pipe (9) arranged in the dashboard (1), and able to deliver a flow of conditioned air to an air delivery pipe (18) connecting said unit (5) to the rear region (19) of the cabin (3), wherein there is provided, in the dashboard (1), a branch pipe (21) connecting said recycling pipe (9) to said delivery pipe (18), said branch pipe (21) dividing the delivery pipe (18) into an upstream portion (18a) situated between the unit (5) and the junction (23) with the branch pipe (21), and into a downstream portion (18b) situated between said junction (23) and the vent and, in said junction (23), a rear recycling shutter (22) able to adopt at least two positions, a first position (P1) in which it closes off the entrance (24) to the branch pipe

Abstract: The invention relates to a device for delivering ventilation air to the front of the cabin (6) of a motor vehicle, this ventilation air being delivered by a delivery box (11) of a heating, ventilation and/or air-conditioning unit, said device comprising at least one ventilation pipe (9) supplying at least one air vent (16a, 16b, 17a, 17b) provided in the dashboard (1), said ventilation pipe (9) being formed in a delivery module (8) which runs transversely under the upper face (2) of the dashboard (1), and splitting downstream in the direction of flow of the ventilation air into at least one “gentle” ventilation pipe (13) which opens onto the, upper face (2) of the dashboard (1) via ventilation orifices (14) of large cross section and into at least one “forced” ventilation pipe (15) which supplies at least one air vent (16a, 16b, 17a, 17b) of small cross section arranged on the dashboard (1) facing the cabin (6).

Abstract: The invention concerns a method for reducing preheating time and for homogenizing temperatures in a passenger compartment, for example of a motor vehicle, wherein the preheating dynamics is improved, which consists in adjusting soft air diffusion air speed in an optimised range of values. In one embodiment, the air circulating device comprises at least a ventilator (8) and at least a soft air diffusion conduit (2), having at its open end an air permeable panel (4) which ensures a soft air diffusion in the passenger compartment. The invention is characterised in that the ventilator, the conduit (2) and the panel (4) are dimensioned so that, at maximum ventilated air flow rate the diffused air speed ranges between 2 and 5 m/s. The device further comprises at least a ventilation conduit (3), said conduit being dimensioned so that, at maximum air flow blown by the ventilator, the air speed at the ventilating nozzles substantially ranges between 2 m/s and 10 m/s.

Abstract: An air-conditioning system is disclosed for a cab of a commercial vehicle, which has a driver's area, a front-passenger's area and a sleeping area in the cab interior. The system is constructed as simply and cost-effectively as possible and permits more economical air-conditioning of the individual areas of the cab interior. The air-conditioning system has at least two fans (30, 32, 34) and a central control unit (16) that contains at least one heater and at least one cooling heat exchanger. Air temperature is controlled individually for each area and is guided via individual air ducts (20, 22, 24, 26, 28) into the respective areas. A first fan (30) is assigned to the drivers and front-passenger's area, and at least one second fan (32, 34) is assigned to the sleeping area.

Abstract: A method and an apparatus for ventilating at least one window in a vehicle by blowing and extracting air in a region of the window is described. The airflow blown against the window is substantially laminar and the air is extracted in an upper region of the window. A dew point is lower than the window temperature in a region of extraction being the upper region of the window, and an absolute humidity of the blown air is lower than that of the extracted air.

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: 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: The air-treatment housing of an air-conditioning apparatus includes, in an upper face, an air outlet for demisting and aeration. A diffusion module is arranged between this upper face of the dashboard. This diffusion module features a demisting vent and aeration vents in its upper front region. The aeration vents are directed towards the passenger compartment and extend over the major part of the width of the dashboard.

Abstract: Unit for conditioning and distributing air in the passenger compartment of a motor vehicle with front and rear seats, comprising: a cold air flow collection chamber (26) downstream to the evaporator (14) with reference to the direction of movement of the air flow, an air flow heating unit (18, 20), a hot air flow collection chamber (28), arranged downstream to the heating unit (18, 20), a longitudinal separation wall splitting the front seat unit into two separate areas for the driver and the front seat passenger, respectively, a rear seat air flow mixing chamber (54) communicating with the hot flow collection chamber (28) and a cold flow collection channel (60) extending under said heating unit (18, 20) and communicating with a first end of said cold flow collection chamber (26) and with a second end of the rear seat mixing chamber (54).

Abstract: A mechanism for driving a plurality of door plates of an air conditioning system for an automobile. An actuator generates a rotating force and has an output shaft. A main gear plate is secured to the output shaft of the actuator for being integrally rotated therewith. The main gear plate has a plurality of first toothed portions and a plurality of non-meshed rotation guide arms. The first toothed portions are formed on a circumferential outer surface of the main gear plate such that they are circumferentially spaced apart one from another. The non-meshed rotation guide arms are formed on a one surface of the main gear plate such that they are circumferentially spaced apart one from another and extend radially. A plurality of driving levers are fixed to the plurality of door plates, respectively.

Abstract: An air distribution chamber that allows selective distribution of air to a variety of vents or combinations thereof is provided. The distribution chamber comprises a nested pair of chambers that define a central cavity having an open and closed end, a shaft that allows axial and rotational movement of the inner chamber within the outer chamber, an actuator that controls such movement, a stabilizer for maintaining the open end and receiving the shaft, and a seal between the inner and outer chambers. The outer chamber defines a series of flanged openings, and the inner chamber defines a series of apertures. The flanged openings are of a form that allows connection of the distribution chamber to ducts. When the inner and outer chambers are aligned such that the openings and apertures overlap, defining one or more communicative passageways, air is able to escape from the cavity, through the aperture and opening, and into the duct.

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: An air distribution chamber that allows selective distribution of air to a variety of vents or combinations thereof is provided. The distribution chamber comprises a nested pair of chambers that define a central cavity having an open and closed end, a shaft that allows axial and rotational movement of the inner chamber within the outer chamber, an actuator that controls such movement, a stabilizer for maintaining the open end and receiving the shaft, and a seal between the inner and outer chambers. The outer chamber defines a series of flanged openings, and the inner chamber defines a series of apertures. The flanged openings are of a form that allows connection of the distribution chamber to ducts. When the inner and outer chambers are aligned such that the openings and apertures overlap, defining one or more communicative passageways, air is able to escape from the cavity, through the aperture and opening, and into the duct.

Abstract: An enclosure for treating air (1) of a passenger compartment, especially of a motor vehicle, comprises an inlet (2) which supplies cool air to a mixing chamber (4) and a heating chamber (5) supplying the mixing chamber with heated air. It further comprises a front channel (12) supplied from the mixing chamber with treated air intended for a front area of the passenger compartment, and a rear channel (15) supplied from the mixing chamber (4) with treated air intended for a rear area of the passenger compartment.

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: An air conditioner unit comprises a case having a plurality of air passages defined therein; two pivotal mode doors pivotally arranged in the case to provide various operation modes of the air conditioner unit when assuming given angular positions, each of the mode doors having a pivot shaft of which leading end is exposed to the outside from a wall of the case; and a mode door actuating mechanism attached to an outer surface of the wall of the case to actuate the two pivotal mode doors.

Abstract: There is provided an air guide duct for a vehicle, the air guide duct connected for communication with an air conditioner unit provided in a passengers' room in a vehicle, the air guide duct adapted to pass and guide temperature regulated air supplied from the air conditioner unit, the air guide duct comprising a first base body constituting one duct half, the first base body including a mounting part for allowing a wire element of an electrical component system to be contained along the air guide duct, and a second base body constituting the other duct half, the second base body covered over the first base body to define an air flowing space therebetween, the second base body including a cover piece which laterally extends from the duct, wherein the mounting part containing the wire element is so constructed as to be covered with the cover piece.

Abstract: The invention relates to an actuator for car air duct damper which allows a precise control on the flow of the air and has an improved ability.

Abstract: In a vehicle air conditioner having manually operated operation members of an air-conditioning operation panel, rotation shafts of an air mixing door and a mode switching rotary door are disposed in a vehicle front-rear direction, so that an axial direction of the rotation shafts of the doors is made the same as that of rotation shafts of the operation members of the air-conditioning operation panel. Accordingly, operation force of the operation members can be directly transmitted to the rotation shafts of the doors by a simple structure.

Abstract: A defroster deflector formed of an elongated flexible channel attached to the interior surface of a vehicle windshield near its upper edge. The channel is an inverted U-shape with an outer wall, a top wall, and an inner wall. The outer wall includes an adhesive surface with a peel-away cover that is removed immediately before the channel is placed into contact with and secured to the windshield. The channel is formed of a flexible material such as neoprene, polyurethane, or rubber that can flex and stretch while retaining its original U-shape.

Abstract: In a blower unit for a vehicle air conditioner, an inside/outside air switching door opens an inside air introduction port and closes an outside air introduction port when an inside air introduction mode is set. Plural ribs for irregularly reflecting an air-blowing noise generated by a blower fan are provided on an inner surface of the inside/outside air switching door, and top ends of the ribs are arranged along a main flow of inside air introduced from the inside air introduction port during the inside air introduction mode. Thus, the blower unit effectively reduces a reflected noise on the inner surface of the inside/outside air switching door, and effectively prevents a disturbance noise of the main flow of inside air.

Abstract: A single piece injection molded air distribution member carried by the steering wheel support structure forms three sides of an air duct with the fourth side of the air duct left open. The open side is positioned adjacent to the vehicle windshield where the windshield forms the fourth side of the air duct. Since the distribution member does not form an enclosed air duct, the distribution member can be made as a single piece injection molded component. The distribution member is placed in contact with the glass or slightly spaced from the glass. If spaced from the glass, a continuous layer of air flows from the distribution member over the surface of the glass. The distribution member has vanes that divide the duct into multiple air channels, each terminating in an air outlet.

Abstract: A differential mechanism is provided between first output shaft, to which the rotation of the drive motor is transmitted, and second output shaft, to which the rotation of first output shaft is transmitted, for adjusting the relative positions of these two output shafts. An air-mix door is connected to first output shaft, and a blowout mode door is connected to second output shaft. The rotation of the drive motor is used to operate the air-mix door and the blowout mode door in linkage, and the blowout mode door is designed to be able to be independently operated by the operation of movable lever of differential gear mechanism.

Abstract: In a vehicle air conditioner, an air conditioning case has a center face opening through which air is blown toward a center upper side of a passenger compartment in a vehicle right-left direction, a side face opening through which air is blown toward a side upper side of the passenger compartment, and a defroster opening through which air is blown toward a front windshield of the vehicle. The side face opening is provided between the center face opening and the defroster opening in an arrangement direction of the center face opening and the defroster opening within a width dimension of the center face opening in a direction perpendicular to the arrangement direction. Thus, a dimension of the air conditioning case in the direction perpendicular to the arrangement direction becomes smaller, while operation force of a door for opening and closing the center face opening is reduced.

Abstract: An upper mixing region (210) and a lower mixing region (214) are fed with hot air via a radiator (203) and with cold air by way of respective bypass ducts (205, 208). Respective mixing flaps (212, 219) make it possible to adjust the temperature separately in the two mixing regions, from where the treated air is sent into different parts of the passenger compartment of the vehicle.

Abstract: In a casing unit of the automotive air conditioner, an expanding portion of a mixing door with which an air flow is brought into direct contact is curved toward an upstream side of the air flow in a convex fashion.

Abstract: An inside/outside air switching box has first and second inside air introduction ports, and an outside air introduction port. An inside/outside air switching door is disposed to open and close the first inside air introduction port and the outside air introduction port, and the second inside air introduction port is opened and closed by an inside air auxiliary door operated due to a pressure difference generated by operation of a blower fan between an inner side of the inside/outside air switching box and an inner side of a passenger compartment. Accordingly, even in an outside air introduction mode, inside air can be introduced from the second inside air introduction port.

Abstract: In a vehicle air conditioner having manually operated operation members of an air-conditioning operation panel, rotation shafts of an air mixing door and a mode switching rotary door are disposed in a vehicle front-rear direction, so that an axial direction of the rotation shafts of the doors is made the same as that of rotation shafts of the operation members of the air-conditioning operation panel. Accordingly, operation force of the operation members can be directly transmitted to the rotation shafts of the doors by a simple structure.

Abstract: A slide door unit for an automotive air conditioner, has a door housing which has a concave inner surface and laterally opposed side walls. The side walls have arcuate guide grooves respectively. A slide door member has a convex outer surface slidable on and along the concave inner surface of the door housing. The slide door member has a concave inner surface. Racks are provided on laterally opposed sides of the concave inner surface of the slide door member. Guide pins are secured to laterally opposed ends of the slide door member. The guide pins are slidably engaged with the arcuate guide grooves of the door housing. A pinion gear unit includes two pinion gears and a shaft by which the pinion gears are connected. The pinion gear unit is rotatably held by the laterally opposed side walls of the door housing having the two pinion gears meshed with the racks respectively. A resilient structure is further provided, which is defined by each of the pinion gears of the pinion gear unit.

Abstract: An air conditioner unit comprises a case having a plurality of air passages defined therein; two pivotal mode doors pivotally arranged in the case to provide various operation modes of the air conditioner unit when assuming given angular positions, each of the mode doors having a pivot shaft of which leading end is exposed to the outside from a wall of the case; and a mode door actuating mechanism attached to an outer surface of the wall of the case to actuate the two pivotal mode doors.

Abstract: In a ventilation box (2) of a motor vehicle, the ventilation box being composed of a plurality of housing parts (5-7), housing parts (6, 7) arranged in the region of a steering column (3) are formed to be fastened selectively on the left or the right side of the motor vehicle. As a result, the ventilation box (2) can be converted for the respective motor vehicle, irrespective of the position of the steering column (3).

Abstract: A cross-flow fan is provided in which air movement is increased without increasing the power of the motor. Opening portions for ventilation are bored wall surfaces forming a stabilizer in the casing of a cooling fan. These bores are at positions separated from the tongue portion by predetermined distances. When a bladed wheel is rotated by a motor, air is sucked from the front side of a core portion through the core portion and into the inside of the casing. The cooling fan generates, in the inside of the casing, a simple flow passing through the bladed wheel to a discharge port. This flow has a circulation flow (swirl) circulating within the bladed wheel.

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 heating and/or air conditioning device for a vehicle passenger compartment comprising an air mixing chamber adapted to be supplied with treated air by communicating with a defrost outlet, a ventilating outlet and an outlet for the feet. The defrost outlet and the ventilating outlet are adjacent and defined by a common duct, and said outlets are controlled by two throttle valve-type flaps housed in the common duct and comprising each at least a first couple of wings controlling the defrost outlet and at least a second couple of wings controlling the ventilating outlet, the two flaps being mounted pivoting about parallel axes between an aerating position and a defrosting position.

Abstract: The air-treatment housing of an air-conditioning apparatus includes, in an upper face, an air outlet for demisting and aeration. A diffusion module is arranged between this upper face of the dashboard. This diffusion module features a demisting vent and aeration vents in its upper front region. The aeration vents are directed towards the passenger compartment and extend over the major part of the width of the dashboard.

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: 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 invention relates to a device for the distribution of ventilating air in the passenger compartment of a motor vehicle. This device has, downstream of a ventilating flap mounted in rotation about a transverse axis in a distribution compartment, a central ventilating duct and two lateral ventilating ducts which deliver air to lateral ventilating outlets. An additional passage connects the chamber (10) upstream of the ventilating flap (8) to the lateral ventilating outlets in the operating modes not involving ventilation, in order to deliver ventilating air to these lateral outlets in these operating modes so as to improve the comfort of the passengers. This passage may be formed by a vent, or by inlet cross sections larger than the area of the flap in front of the lateral ducts.

Abstract: In an air passage switching device, suitable for use for example in a vehicle air conditioning apparatus, for switching a flow of air among a plurality of air passages by moving a film door in one direction by a stepping motor and in another direction by the spring force of coil spring, when the film door is moved in the direction in which it winds up the coil spring the pulse rate of the stepping motor is reduced to thereby increase the motor torque and prevent the occurrence of a shortage of motor torque. When the film door is moved in the other direction the pulse rate of the stepping motor is increased to reduce the motor torque.

Abstract: A vehicle air-conditioning system that independently controls left-right air flow distribution in correspondence with left and right heat loads during a maximum cooling mode. In the system, blowout air flow is increased when driver seat side and passenger seat side air-mixing film members are both positioned in a maximum cooling position, and the heat load has risen in only one of a driver seat side space and a passenger seat side space in a passenger compartment. Further, each respective film member is operated to fully open a cool air bypass passage on the side on which the heat load has risen and the respective film member corresponding to the side on which the heat load has not risen significantly is operated to reduce the open area of the cool air bypass passage. At the same time, fan speed is increased to increase the air blow amount.

Abstract: A heating and/or air-conditioning installation has a de-icing outlet with a de-icing opening adjoining a window, an air-diffusion element with a low output per unit surface area, and an air-distributing element. The air-distributing element has at least a first and a second position. In the first position it blocks the air-diffusion element to ensure de-icing of the window. In the second, it partially blocks the de-icing region so that the output per unit surface area via the de-icing region corresponds to diffusion at a low output per unit surface area, such that the de-icing region and the air-diffusion element provide air diffusion at a low output per unit surface area and their air flows mix.

Abstract: An arrangement for heating a motor vehicle interior, especially a truck driver's compartment, a bus interior or the passenger compartment of a passenger car, with a ventilation device (10) for taking in fresh air via a fresh air intake area and for discharging air into the motor vehicle interior, with a heating device (11) for heating of air, and with a warm air line (25) for routing the air which has been heated by the heating device (11) into the ventilation device (10). The warm air line (25) is routed into the fresh air intake area such that the heated air emerging from the warm air line (25) is taken in jointly with the fresh air into the ventilation device (10).

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.