Abstract: An air distribution assembly for vehicles, comprising a first flap, able to rotate around a first axis, a second distribution flap, able to rotate around a second axis, and a geared transmission device that connects the first and the second flap to each other. The transmission device comprises at least one gear wheel including a first and a second element able to rotate relative to each other and an elastic element positioned between the first and the second element to allow a relative rotation motion between the first and the second element.

Abstract: In an automotive air-conditioning system, when pollen mode control is effected by a vehicle occupant, air outlet mode is forcibly set to a face mode. Further, the air flow amount determined from the air flow amount Vm used in the usual auto mode and the air flow amount f(Tw) used during warm-up control or the air flow amount determined by the air flow amount correction value f(Tam) having a relatively small upper limit value when ambient temperature is higher than a predetermined temperature (15° C.), whichever is larger, is taken as the set value for the air flow amount in the pollen mode control. With this arrangement, when coolant temperature and ambient temperature are low, a relatively small amount of air can be blown to the upper part of the occupant's body, and thus, while maintaining the pollen removal effect, occupant discomfort can be reduced by preventing a fast flow of air from being blown toward the occupant's face, etc.

Abstract: The invention relates to a flap (10) for air channels provided with a multi-flow conduit arranged downstream with respect to said flap, airflows (45, 46) being limited by flow guiding elements (56, 57), and thereby separated from each other. According to said invention, the axis of rotation (11) of the flap is arranged on the edge, the flap being transversally projected with respect to the axis and divided into two flap segments which are arranged one after another. Each flap segment is provided with at least one sealing device (14) for airtight seating against a passage opening.

Abstract: A device for climate control includes at least one data interface for outputting first such control data for an actuator unit of an air inlet into a driver footwell such that the footwell is cooled relative to the remaining space surrounding the driver and for outputting second control data to a unit for warming the remaining space surrounding the driver such that the remaining space surrounding the driver is at least partially heated, and thus the physiological active chain that commences when the driver is drowsy is interrupted.

Abstract: An air conditioning seat device includes an air blower, and a dehumidifier for dehumidifying the air sent from the air blower owing to adsorption, and blows out the dehumidified air to holes provided on a skin of a seat through an air duct. In this makeup, the sweat on the body surface and in the clothes is rapidly vaporized, causing a large amount of vaporization heat loss. Accordingly, the human body feels coolness, and steaminess on the skin is suppressed owing to the sweat vaporization.

Abstract: An air conditioner housing having an evaporation device, a heating device, an air control device, an interior space in which air flow paths are formed, and having a housing which surrounds the interior space, is proposed. The air conditioner housing (1) is defined in that a first air flow path (15) and a second air flow path (17) are formed, and in that the air control device (9) has at least two mixing flaps (11, 13), a first mixing flap (11) of which is designed to the first air flow path (15), and a second mixing flap (13) of which is assigned to the second airflow path (17), and in that the mixing flaps (11, 13) each completely open the assigned air flow path (15, 17) in a first functional position and completely close it in a second functional position.

Abstract: An HVAC controller housing including a plurality of valves extending therein for directing airflow to a plurality of ducts is provided. The housing is of the type including a side port extending outwardly from the housing and in fluid communication with one of the ducts. A drive gear is provided on the housing to drive a plurality of driven gears disposed on the housing for driving the plurality of valves. The driven gears are responsive to the drive gear through a transmission member comprising an annular idling gear in meshing engagement with the drive gears and at least one of the driven gears. The annular idling gear is rotatably supported on the housing and encircles the side port for efficient torque transfer between the drive gear and the driven gears.

Abstract: There is provided an automotive air conditioning system comprising a primary blower disposed at a front part of a vehicle having a passenger compartment constituted by a front-seat side space and a rear-seat side space, a case disposed in the front part of the vehicle in such a manner that air is caused to flow from one end to the other end thereof by means of the primary blower and having a lower opening which is opened therein at a lower portion at the other end thereof, a heat exchanger disposed within the case, a scroll case disposed below the case and having opened therein an outlet and an inlet connecting to the lower opening, an centrifugal fan accommodated in the scroll case and having a rotating shaft which is oriented in a substantially vertical direction, a secondary blower having driving means for driving the centrifugal fan, and a rear seat duct connected to the outlet and communicating with the rear-seat side space.

Abstract: In a vehicle air conditioner, a first air-conditioning control value is calculated based on a surface temperature detected by a non-contact temperature sensor in a temperature detection area of a passenger compartment. When it is determined that an obstacle exists between the temperature detection area and the non-contact temperature sensor, a second air-conditioning control value is calculated according to a temperature information that is influenced less by the obstacle than the detected surface temperature. When it is determined that the obstacle does not exist, an air conditioning state of the passenger compartment is controlled based on the first air-conditioning control value. When it is determined that the obstacle exists, the first air-conditioning control value is corrected to approach the second air-conditioning control value to calculate a corrected air-conditioning control value, so that the air conditioning state can be controlled satisfactorily.

Abstract: An air conditioner housing having an evaporation device, a heating device, an air control device, an interior space in which air flow paths are formed, and having a housing which surrounds the interior space, is proposed. The air conditioner housing (1) is defined in that a first air flow path (15) and a second air flow path (17) are formed, and in that the air control device (9) has at least two mixing flaps (11, 13), a first mixing flap (11) of which is designed to the first air flow path (15), and a second mixing flap (13) of which is assigned to the second airflow path (17), and in that the mixing flaps (11, 13) each completely open the assigned air flow path (15, 17) in a first functional position and completely close it in a second functional position.

Abstract: In a vehicle air conditioner, a rotary door is disposed to open and close a foot opening portion and an inlet port of a face opening portion and a defroster opening portion. The rotary door includes a curvature outer peripheral portion for opening and closing the inlet port of the face opening portion and the foot opening portion, end plate portions located at two ends of the outer peripheral portion in an axial direction to open and close the foot opening portion, and shaft portions located at the end plate portions to be rotatably supported in the air conditioning case. The rotary door and the air conditioning case are provided such that a clearance between the inner wall of the air conditioning case and the outer peripheral portion of the rotary door is changed to be different between a bi-level air outlet mode and a foot/defroster air outlet mode.

Abstract: Cooled air introduced from an evaporator through a first passage is divided into laminar flows by a guide assembly mounted on an air mixing door, and is changed in direction thereby and supplied to a mixing region. Warmed air introduced from a heater core through a third passage is divided into laminar flows by the guide assembly, and is changed in direction thereby and supplied to the mixing region. The mixing region mixes the cooled air and the warmed air with each other, and delivers uniformly mixed air into a passenger compartment via a face outlet, a defroster outlet, or a foot outlet.

Abstract: A device for control of the air flow rates into the instrument panel air outlets of a vehicle heating or air conditioning unit is described that is provided with a casing, with damper doors for both instrument panel side air outlets in the casing parts and at least one damper door for the instrument panel central air outlet in the casing part, whereby the damper doors are pivotably supported on one common shaft. Exactly one closing position is assigned to the damper doors in the first casing part, whereas several closing positions are assigned to the damper door in the second casing part continuously over a pivoting range of the shaft, whereby the closing position of the damper doors is arranged in the pivoting range of the damper door. This device enables separation and independent control of the air flow rates.

Abstract: The air-conditioning unit includes an air-conditioning case, a heater, a bypass path bypassing the heater, an air-mixing chamber, an air-mixing door, and an air opening. The air-conditioning unit also includes an auxiliary door arranged in series with the air-mixing door in the bypass path. The auxiliary door is operated between at a first position and at a second position. The auxiliary door in the first position closes the bypass path more than in the second position. The auxiliary door is operated at the first position at least when the air-mixing door opens the bypass path slightly.

Abstract: In an air conditioning apparatus for a vehicle, a blower unit is arranged such that air is discharged in a substantially front and rear direction of the vehicle. An evaporator is opposed to an air discharge port of the blower unit and inclined at an angle equal to or greater than 45 degrees with respect to a horizontal plane. The heater core is arranged horizontally above the blower unit and an end of the heater core is adjacent to an upper end of the evaporator. Further, a slide door is provided downstream of the air discharge port to distribute the air toward the evaporator and the heater core. By this arrangement, dimensions of the air conditioning apparatus are reduced with respect to horizontal and vertical directions. Thus, this compact air conditioning apparatus can be installed in a small space such as in a center console or an interior side trim space.

Abstract: When a switching signal to switch the mode to the defroster mode is generated and the target air volume is smaller than a predetermined air volume ?, the target air volume is automatically increased to the predetermined air volume ?. In doing so, an increase starting point of time of increasing the target air volume is determined according to the blowout mode immediately before a switch signal to switch the mode to the defroster mode is generated.

Abstract: A motor vehicle air conditioning system including a Coanda effect air distributor device and mixing means which allow to vary the temperature of the air available to the different outlet conduits of the distributor device for the same setting of the means for regulating the temperature of the system. In this way, for a same setting of the temperature regulating means, the air conveyed to the outlets situated at the base of the windshield is at a higher temperature than the air conveyed to the other outlets and in particular to those adjacent to the floor of the motor vehicle passenger compartment. Preferably, a third, still lower temperature level is available to the outlets situated in the front part of the dashboard of the motor vehicle in the direction of the motor vehicle occupants.

Abstract: A structure to provide air flow an mixture in an HVAC unit utilizing a separate piece air deflector located within the lower housing of the HVAC unit and ribs to direct airflow, the separate piece air deflector configured to cause air deflection and airflow towards the distribution area of the unit.

Abstract: An air conditioner for automotive vehicle use intended to prevent a defrosting operation in an instantaneous foot-defroster mode. The DEF mode in which air mainly from a DEF opening is blown toward the windshield is set by an exclusive front DEF switch. The F/D mode for blowing a substantially equal amount of air to the windshield and the feet of the occupants from the DEF opening and the FOOT opening, respectively, together with the other blow modes (FACE, B/L, FOOT), are sequentially switched for each operation of the blow mode switch in a predetermined sequence. In the case where the F/D mode is selected, the air condition control operation is not performed nor is the blow mode displayed in F/D mode before the lapse of a predetermined length of time (about 1 second). In the case where the blow mode other than F/D mode is desired, therefore, the unrequired control operation in F/D mode is not performed and the instantaneous change is not displayed even though the F/D mode is unavoidably passed-through.

Abstract: A method for controlling a vehicle HVAC system to automatically defog a windshield glass and to prevent fogging or condensation of the windshield glass. In-cabin air temperature and relative humidity are measured and used to determine a dewpoint. Further, ambient or outside temperature is measured. If windshield wipers are being used or if the cabin air temperature is less than a predetermined temperature, the ambient air temperature value is used as a glass temperature, otherwise the glass temperature is determined from the ambient air temperature and vehicle speed. A fog margin, which is a measure of the likelihood of fog formation, is based upon the difference between dewpoint and the windshield glass temperature. The fog margin is used to control the HVAC system to anticipate and respond to potential fogging conditions.

Abstract: A method and apparatus for controlling a vehicle HVAC system to automatically defog a windshield glass and to prevent fogging or condensation of the windshield glass. The ambient air temperature and vehicle speed are measured and used to determine a windshield glass temperature. The in-cabin air temperature and relative humidity are measured and used to determine a dewpoint. An dewpoint margin is calculated to compensate for sensor accuracy and fog predictability. A fog margin, which is based upon calculated windshield glass temperature and dewpoint, is calculated and used, in conjunction with the dewpoint margin, to control the HVAC system to anticipate potential fogging conditions and to scale the intensity of the HVAC system response based upon the severity of fogging conditions.

Abstract: In a hybrid vehicle air conditioning system in which coolant is supplied to a heater core from a vehicle running engine, for heating, a demand of the operation of the vehicle running engine is controlled to obtain respective set coolant temperatures TWS2 for target air-outlet temperature TAO of air sent out into a passenger compartment during a bilevel mode operation and TWS1 for the target air-outlet temperature TAO during a foot mode operation by setting the set coolant temperature TWS2 higher than the set coolant temperature TWS1.

Abstract: An HVAC unit having a multiple air valve unit comprising two air valve devices sharing at least one common rotation axis is described. Concentric air valve device shafts interface with a common actuation device in such way to allow for rotational motion between the actuation device and the air valve device unit, and to allow to air valve devices to control or distribute air into three or more air outlets of the HVAC unit.

Abstract: A rear face inlet 25 and a foot inlet 28, and a rear face duct portion 26 and a foot duct portion 31 which are adapted to distribute air from the inlets, respectively, are disposed in alignment with each other in a transverse direction of a vehicle. As a result, a conventional overlapping portion where the rear face inlet and the foot inlet are made to overlap each other vertically somewhere along the length of each of the inlets in a transverse direction of the vehicle and a conventional overlapping portion where the rear face duct and the rear foot duct are disposed in such a manner as to overlap each other in a longitudinal direction of the vehicle somewhere along the length of a downwardly extending portion of each of the ducts can be eliminated, whereby the air conditioning unit can be constructed so as to be decreased in size vertically and longitudinally.

Abstract: A vehicle air conditioner includes an air-conditioning ECU. The air-conditioning ECU performs a cooling mode operation in which air is cooled by an interior heat exchanger in a cooling refrigeration cycle. The air-conditioning ECU performs a heating mode operation, in which air is heated by the interior heat exchanger in a hot gas heater cycle. The air-conditioning ECU performs an air blowing operation in which air is blown toward an inner surface of a windshield of the vehicle without operating the compressor before performing a refrigerant collecting operation.

Abstract: An air-distribution system for the dashboard of a motor vehicle comprises a plurality of auxiliary ducts that branch off in parallel from a manifold. Associated to each auxiliary duct is an additional and independent unit for regulating the flow rate and/or the temperature of the air flow that traverses the respective auxiliary duct. Each auxiliary duct branches off into a number of terminal ducts and is provided with means for the distribution of the air to the terminal ducts, which are preferably of the type comprising means of deviation of the air by the Coanda effect.

Abstract: A vehicle air conditioning system secures an appropriate temperature difference in the air blown through vertically arranged air ducts when the system is in a bi-level mode. A hot air inlet is disposed above a cool air inlet. A face opening is disposed at an upper location while foot openings are disposed at a lower location. A blow mode-changing door for opening and closing both the openings is a butterfly type door. The blow mode-changing door is pivotally disposed in a door housing. In the bi-level mode in which the blow mode-changing door opens both the foot openings and the face opening, a bi-level mode bypass passageway for introducing cool air from the cool air inlet into the face opening is defined between an extremity of the blow mode-changing door and the inner wall surface of the door-housing portion.

Abstract: A vehicular air-conditioning apparatus includes a hot-water heater and an electric heater provided downstream of the hot-water heater. The apparatus also includes a bypass passage for allowing air-conditioning air flowing past the hot-water heater to bypass the electric heater and a bypass door provided in the bypass passage for opening and closing the bypass passage.

Abstract: A vehicle air conditioning system uses a non-contact temperature sensor for feedback control of the temperature of the air blown out from a blowing opening. The degrees of opening of an air mix damper and a bypass open/close damper are controlled by actuators that respond in accordance with a temperature detected by the non-contact sensor so the blowing temperature will ultimately approach a target value. Air conditioning control is achieved as desired by this feedback control of the blowing temperature without providing wiring for a temperature sensor near the blowing opening.

Abstract: A vehicle air conditioner has an air conditioning unit and an air conditioning control unit. The air conditioning unit has a FACE blowout port, a DEF blowout port, an upper blowout port. The air conditioning control unit estimates an outside windshield temperature and determines an outside dew point temperature. The control unit also controls the upper blowout port to stop blowing or not based on the estimated outside windshield temperature and the outside dew point temperature in a face mode to prevent the windshield from fogging.

Abstract: A vehicle air-conditioning system improves a passenger's sensation of cooling by preventing air blown from a foot opening when a cooling load is low, creating a comfortable temperature distribution along the passenger's body. The vehicle air-conditioning system automatically selects a face mode when a target air temperature (TAO) is between a first predetermined temperature and a second predetermined temperature, which is higher than the first predetermined temperature, a bi-level mode when the TAO is higher than the first predetermined temperature and an evaporator air temperature is higher than a predetermined temperature, or a face mode when the TAO is lower than the first predetermined temperature and the evaporator air temperature is lower than the predetermined temperature.

Abstract: In a vehicle air conditioner, a foot door is rotatably supported for opening and closing a foot opening and an air port communicating with defrost and face openings. The foot door has a guide plate. The guide plate functions as a heated air guide portion for directing heated air heated by a heating device to merge with cooled air that bypasses the heating device when the foot door is at a defrost/face mode position. The guide plate functions as a cooled air guide portion for directing the cooled air to merge with the heated air when the foot door is at a foot mode position. Accordingly, the heated air and the cooled air are sufficiently mixed with each other. Because the guide plate is moved for switching the defrost/face mode position and the foot mode position, the flow of air is not blocked by the guide plate.

Abstract: A device and method for automatically preventing misting of the windscreen of a vehicle, wherein a number of sensors determine ambient conditions capable of misting the windscreen, and, upon such ambient conditions occurring, an electronic central control unit automatically activates the air-conditioning system of the vehicle to prevent the windscreen from misting. The device has and the method utilizes a radiant mean temperature sensor arranged inside the vehicle passenger compartment to measure temperature inside the passenger compartment. The radiant mean temperature sensor (4) has a field of view including at least part of the windscreen.

Abstract: In a vehicle air conditioner, a heater core is disposed in an air conditioning case to form front and rear cool air bypass passage through which cool air bypasses the heater core, and front and rear air mixing doors are disposed to independently adjust temperature of air blown toward a front seat side and temperature of air blown toward a rear seat side in a passenger compartment. A switching door is disposed to partition front and rear passage portions of the heater core from each other at a partition position, and to shut the rear passage portion at a rear shutting position. The switching door and the rear air mixing door are connected to a common operation mechanism to be operatively linked with each other.

Abstract: A mode switching control device of a vehicle air-conditioning apparatus capable of selecting vent mode delivery, whereby air is delivered to an upper part of the inside of a passenger compartment; foot mode delivery, whereby air is delivered to a lower part of the passenger compartment; and bi-level mode delivery, whereby the vent mode delivery and the foot mode delivery are implemented together. Even when on the basis of a target outlet temperature foot mode delivery has been selected, when the occupant insolation level is above a predetermined level the control device switches to the bi-level mode to provide the occupant with a comfortable air-conditioning feeling even when the vehicle is running.

Abstract: The present invention has been made to solve the foregoing problems and it is an object of the present invention to provide a two-layer flow air conditioning system in which a partition wall is installed on a path between an evaporator and a heater core to divide internal air and external air, and a first temperature adjusting door and a second temperature adjusting door each having a fan shape are installed at both sides of the partition wall in such a manner as to be opened at their sides to control the flow direction of the internal air and the external air which are supplied to both sides of the partition wall so as to prevent any mixture between the internal air and the external air, thereby enhancing heating and cooling effects without degrading a defrosting performance.

Abstract: A heating and/or air conditioning system for an interior of a vehicle has a central heating and/or cooling device and a decentralized air-conveying device which includes a plurality of air-conveying units arranged locally in the vehicle interior. In order to permit good regulation of the heating and/or air conditioning system and efficient air conditioning, respective air-conveying units of the decentralized air-conveying device are arranged in a plurality of subspaces of the vehicle interior for circulating air in the respective subspaces.

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: A vehicle air conditioner controls the air-conditioning automatically based on a control characteristic. The control characteristic, such as a blower voltage calculation map, is selected from plural control characteristics, or obtained by a calculation based on the personal information of the passenger or the manual operation for the air conditioner by the passenger. The control characteristic is selected or calculated as the one which is supposed to be suitable for the passenger's preference. The control characteristic can be used as a basis, or a specific characteristic for learning the passenger's preference after the control characteristic is determined.

Abstract: In a vehicle air conditioner, a defroster opening is provided at an upper side of a middle portion between an evaporator and a heater core arranged adjacently. A defroster door for opening and closing the defroster opening is a butterfly door having a door body portion and a rotation shaft. The defroster opening can be partitioned by a plate surface of the door body portion into a first communication passage at a side of the evaporator and a second communication passage at a side opposite to the evaporator. In the air conditioner, a guide member for restricting an air flow in the first communication passage is provided at least one of the door body portion and an air conditioning case. Thus, it can restrict a windshield from being fogged due to evaporation of condensed water by hot air of the heater core when a blower is stopped.

Abstract: An air passage switching device for a vehicle air conditioner includes first and second openings and a rotary door for opening and closing the first and second openings. A rib having a first middle seal surface and a rib having a second middle seal surface are provided in a case to protrude an inner side and to be separated by a predetermined angle in a rotation direction of the rotary door. Further, the rotary door has a door structure angle that is larger than a door operating angle. In addition, the first and second middle seal surfaces and first and second end seal surfaces are provided in the case so that the predetermined angle is a difference between the door structure angle and the door operating angle. Accordingly, arrangement positions of the first and second openings can be readily set without increasing a door operating amount.

Abstract: The temperature of air discharged from first and second passages are adjusted by adjusting the proportion of a flow rate of cold air with respect to that of hot air by means of a first cold air door 26 and a first hot air door 24, and by means of a second cold air door 27 and a second hot air door 25. Discharged air flow rates are controlled by changing the areas of the first and second passages while the proportion of the flow rate of cold air with respect to that of hot air is maintained to be constant by means of the first cold air door 26 and the first hot air door 24, and by means of the second cold air door 27 and the second hot air door 25.

Abstract: In a unit case of a vehicle air conditioning apparatus, air mix chamber is not provided. Cooled air cooled by an evaporator and heated air heated by a heater core are directly introduced to a face opening and a foot opening of the case and then mixed in a face duct and a foot duct. The case has a guide for directing a flow of the heated air or the cooled air. The guide, the foot opening and the face opening are arranged such that the amount of heated air passing through the foot opening is larger than that of the cooled air and the amount of cooled air passing through the face opening is larger than that of the heated air in a bi-level mode. Accordingly, a temperature of air blown from a foot outlet into a passenger compartment is different from that of air blown from a face outlet.

Abstract: Engine cooling water is charged to a flexible diaphragm member (3d) to expand the flexible diaphragm member (3d) so that the substantial sectional area of an air passage (3b) is decreased when a ventilation resistance, in an air conditioning casing (2) in a maximum heating or a foot mode, is increased. On the other hand, the engine cooling water is discharged from the flexible diaphragm member (3d) to deflate the flexible diaphragm member (3d) so that the substantial sectional area of the air passage (3b) is increased when a ventilation resistance, in the air conditioning casing (2) in maximum cooling or face mode, is decreased. Thus, the property of a fan (3) can be changed into a property suitable for foot mode having a large ventilation resistance, while heating air is being supplied.

Abstract: A rear face inlet 25 and a foot inlet 28, and a rear face duct portion 26 and a foot duct portion 31 which are adapted to distribute air from the inlets, respectively, are disposed in alignment with each other in a transverse direction of a vehicle. As a result, a conventional overlapping portion where the rear face inlet and the foot inlet are made to overlap each other vertically somewhere along the length of each of the inlets in a transverse direction of the vehicle and a conventional overlapping portion where the rear face duct and the rear foot duct are disposed in such a manner as to overlap each other in a longitudinal direction of the vehicle somewhere along the length of a downwardly extending portion of each of the ducts can be eliminated, whereby the air conditioning unit can be constructed so as to be decreased in size vertically and longitudinally.

Abstract: When it is assumed that a vehicle is stopped or parked after its engine was stopped and a predetermined period of time has passed, a cold wind side air mixing door, hot wind side air mixing door, cold wind door and rear cold wind side air mixing door are totally closed and a blower is operated for a predetermined period of time. Accordingly, while a cooler is being dried, drying air containing much offensive smell components, which has passed through the cooler, is discharged outside the vehicle. Therefore, it is unnecessary to provide an exclusively used air passage and an opening and closing door for opening and closing the air passage used for composing an air blowing passage to dry the cooler. By utilizing the existing equipment, air used for drying, which has passed through the cooler, containing much offensive smell components can be discharged outside the vehicle.

Abstract: An air conditioning unit for a vehicle has an air conditioning casing having flow paths therein, an evaporator arranged in the air conditioning casing and substantially having a U-shape, an outer flow path provided on the outer side of the U-shaped evaporator on the upstream or downstream side of an air flow of the U-shaped evaporator, an inner flow path provided on the inner side of the U-shaped evaporator on the downstream or upstream side of the air flow of the U-shaped evaporator, and a heater core arranged on the downstream side of the air flow of the U-shaped evaporator.

Abstract: An air conditioner includes an evaporator and a heater core. A first partition is positioned between the evaporator and the heater core, and provided with a first blowing opening for allowing air to detour the heater core and a second blowing opening for blowing air to the heater core. A temperature regulating door is supported on sidewalls of the air conditioner housing by two side support arms. A heater chamber containing the heater core is open at its bottom and communicates with the second blowing opening. A pair of side blowing passages communicate the heater chamber and a mixing chamber.

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: 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.