Abstract: A flap for controlling the air flow through an air-guide duct is provided with an integral drive element. The flap is adapted to be pivoted about and axis and is supported at each of its axial ends. One end is provided with a cut-out or recess which extends inwardly from one end along the axis of rotation. This cut-out or recess has opposed edges which engage in slots formed in holding means or housing that encloses the drive element, and which permit the ready insertion of the drive unit into an operative position.

Abstract: A control device for gas is provided with a pivotable flap mounted between side walls of a guide duct. A receiving pocket for the insertion of a drive element (motor) is provided on one of the side walls and is oriented in such a way that, after insertion, the output shaft of the drive element is in engagement with the flap. This receiving pocket may be arranged so that the drive element is inserted coaxially with respect to the pivot axis of the flap or transversely thereto, or if the receiving pocket extends into the interior of the duct, the pivot flap is provided with a corresponding cut-out.

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: 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: An automotive air conditioner includes an offset blower for blowing an air, an evaporator is centrally disposed within a dashboard and receives the air from below, and a heater approximately horizontally disposed above the evaporator. The evaporator inclines downward along the direction of the air flow. A plurality of condensed water guide plates are provided under the evaporator so as to allow a condensed water smoothly flow on the surface of each guide plate and is discharged from the evaporator through a condensed water drain pipe.

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 conditioned air unit for use in a motor vehicle providing heating or cooling to a plurality of regions having relatively independent temperature setting. The structure provides compact, flexible and convenient temperature conditioning for each region.

Abstract: A motor-vehicle heating and/or air conditioning device has a cold-air duct, a hot-air duct housing a heating radiator, a mixing chamber communicating with respective air outlets of the ducts and a mixing means. The mixing means has at least one flap of drum type which, in the “hot” position, closes off the outlet of the cold-air duct, and, in the “cold” position, closes off the outlet of the hot-air duct. The shutter wall of the flap includes at least one recess such that, when the flap is shifted from the “hot” position to the “cold” position, a cold airflow can pass through the recess so as to encounter a hot airflow.

Abstract: An assembly 10 for controlling the temperature of air flowing into the passenger compartment of a vehicle has a frame 20, an arcuate door 40, and an actuation assembly 50. The frame 20 defines an opening 21 through which air flows into the passenger compartment of the vehicle. The frame 20 also includes opposite arcuate tracks 25, 26. The arcuate door 40 moves to control airflow through the opening 21 and has side edges 41, 42 which are slidably received in the opposite arcuate tracks 25, 26. The arcuate door 40 and the opposite arcuate tracks 25, 26 maintain the same center of curvature during the sliding of the arcuate door 40 in the opposite arcuate tracks 25, 26. The actuation assembly 50 moves the arcuate door 40 along the opposite arcuate tracks 25, 26.

Abstract: The invention relates to a heating or air-conditioning system for vehicle interiors having an air distributor which is connected to an air guiding duct and has air outlet openings for the lower plane of the vehicle interior. An air guiding duct with air outlet openings for a center plane of the vehicle interior is connected by way of a cold-air inlet with the cold-air duct and by way of a warm-air inlet with the air distributor. One cold-air or warm-air flap respectively is in each case assigned to the cold-air and warm-air inlet. The flaps are configured and disposed for the purpose of a faster cooling of the vehicle interior by the large-area flowing of cold air into all areas of the vehicle interior.

Abstract: In an air conditioner for a vehicle, a temperature control unit includes a first air mixing door for adjusting an opening degree of a cool air passage through which air having passed through an evaporator bypasses a heater core, and a second air mixing door for adjusting an opening degree of an air inlet portion of the heater core. At least the second air mixing door between the first and second air mixing doors is a butterfly door having a rotation shaft at a center in a door width direction. When an inside/outside air double-layer flow mode is set, the second door partitions an air passage between the evaporator and the heater core into a first air passage through which outside air flows and a second air passage through which inside air flows while fully opening the air inlet portion of the heater core. Thus, in the air conditioner, a distance between the evaporator and the heater core is reduced while partition performance between inside air and outside air due to the second air mixing door is improved.

Abstract: An air conditioning apparatus for a rear seat of a vehicle includes a centrifugal fan disposed at a downstream air side of an evaporator. The centrifugal fan is a backward curved fan having a plurality of blades each of which is curved backward relative to a rotation direction of the centrifugal fan. In the centrifugal fan, because a main component of velocity vector is in a radial direction of the centrifugal fan, a dynamical-pressure component of air blown from the centrifugal fan can be effectively changed to a hydrostatic-pressure component. Thus, during a cooler mode where air is simultaneously blown from first and second air outlets toward the rear space of the passenger compartment, a pressure of air blown from the first and second air outlets can be increased, and an amount of air blown toward the rear space of the passenger compartment can be sufficiently increased.

Abstract: A case of an air conditioning system for a car includes a main body having a main path through which air supplied from a blower unit passes and a first path formed at the exit of the main path, a housing portion formed on top of the main body in which second and third paths communicating with the main path are formed, a rotating door which has an air stream path and which has rotatably installed inside the housing portion for selectively providing air received from the main path to the second and third paths, a heat exchanger installed in the main path, and a door unit installed on the boundary between the housing portion and the main path of the main body for allowing some or all of the air supplied from the blower unit to pass to the housing portion or to pass to the housing portion via the heat exchanger.

Abstract: A rotary temperature control system for use in controlling the temperature of a blended air stream supplied to a vehicle passenger compartment is combined with a rotary ventilation mode control system in a common housing. The ventilation mode and temperature control systems include manually operable rotary control knobs operatively connected through pull-pull cable systems to gears in the housing that operate a temperature blend door controlling the output temperature of a blended air stream and one or more vent dampers controlling the ventilation mode of the system. A drive connection in the housing includes irregularly shaped gears for producing a predetermined generally non-linear relationship between rotary movement of an input control member and rotary movement of the temperature blend door to produce a generally linear relationship between the rotary movement of the temperature control knob and the temperature of the air stream throughout a major portion of the rotary movement of the control knob.

Abstract: An air conditioning apparatus for a vehicle includes an evaporator and a heater core disposed approximately horizontally. In the air conditioning apparatus, an air-mixing door for adjusting a flow ratio of air passing through the heater core and air passing through a bypass passage is disposed, and air guide plates for guiding air are formed on a surface of the air-mixing door, positioned at a side of the bypass passage. A blower is disposed so that air is blown in an air-blowing direction approximately horizontally, and thereafter flows upwardly toward the heater core. The air guide plates guide air from a forward side toward a backward side of the air-blowing direction. Thus, in the air conditioning apparatus, a flow distribution and a temperature distribution of air to be blown toward the passenger compartment can be made uniform.

Abstract: The air mixing device, for use in an air conditioning apparatus or a vehicle heater system as a flow control device which consists of at least two flap members, the flap members being mutually independently movable between first and second positions in which they respectively obturate first and second air inlet openings.

Abstract: The air regulator for vehicles is provided with, within a casing, an evaporator which cools air, a heater which reheats the air cooled by the evaporator, and an air mix damper which is disposed on the downstream side of the evaporator and on the upstream side of the heater and in close proximity thereto, and which regulates the amount of air passing through the heater; a heat reflecting surface is formed on the heater side of the air mix damper. By means of this, it is possible to prevent the thermal deformation of the air mix damper by reflecting the radiation from the heater side using the heat reflecting surface. Accordingly, the sliding problems of the air mix damper can be prevented.

Abstract: A heating and ventilating installation for a motor vehicle includes a regulating valve for adjusting the distribution of fresh air, received from a fresh air delivery chamber, between a first duct and a second duct. The first duct contains a heating radiator, and the first and second ducts exhaust into an air mixing zone, which communicates with a ventilating air vent and a foot warming vent in the cabin of the vehicle. A temperature sensor is located immediately downstream of the heating radiator, and transmits signals, representing the prevailing value of the temperature of heated air in the first duct, to a processing module.

Abstract: A motor vehicle heating and ventilating, and/or air conditioning, installation includes a heating and air distribution unit comprising a casing, the inlet of which is connected to the delivery side of a motorised fan unit. The casing has two outlets, namely a "feet" outlet leading to a lower part of the cabin of the vehicle, and a ventilation outlet, also leading into the cabin. The casing is divided into three ducts. Each of the first and second ducts has an upstream end open at the inlet of the casing, and a downstream end communicating with the feet and ventilation outlets of the casing respectively, under the control of a first flap valve and a second flap valve respectively. The third duct lies between the first and second ducts and has a central portion containing a heat exchanger.

Abstract: A heater or air conditioning unit is able to efficiently deliver air at a low noise level. The unit is manufactured in accordance with the "component sharing principle," whereby it is provided with an installation space capable of accepting an evaporator for air conditioning, or air-guide devices. The air-guide devices route the incoming air flow without inducing turbulence.

Abstract: An apparatus for heating and ventilating, and/or air conditioning, the cabin of a motor vehicle, and in particular an electric vehicle, comprises a series of elements arranged in a generally horizontal succession along the longitudinal axis of the vehicle. These elements comprise: a blower for producing a stream of cold air; a first duct fed by the blower and divided into a cold air transmission branch and an air heating branch which contains a heat recuperator; a selection flap valve for controlling the distribution of the air flow between the two branches; a second duct which receives the outlet air of both of the two branches of the first duct, and which contains at least one electric radiant heater; and a distributor fed by the second duct and including a distribution valve for distributing the cold or heated air between appropriate ventilating ports in the cabin.

Abstract: In a heating and ventilating apparatus for the cabin of a motor vehicle, with or without air conditioning, the apparatus comprises at least one first duct and at least one second duct, which are arranged to deliver, respectively, a stream of cold air and a stream of mixed air through a common aerator vent communicating with the cabin of the vehicle. The apparatus includes a first flap valve for controlling the flow of cold air at the outlet end of the first duct, together with a second flap valve which is arranged to control the flow of the mixed air at the outlet of the second duct. First and second control means are provided for acting on the first and second flap valves respectively.

Abstract: A new and improved vehicle cab heater includes a shroud assembly capable of fitting over a radiator and radiator fan on a water-cooled engine. A conduit is connected between the vehicle cab and the shroud assembly for conveying heated air from the radiator to the vehicle cab. A manually operated valve assembly is located at an end of the conduit. The valve assembly includes an exterior portion located outside of the vehicle cab and includes an interior portion located inside the vehicle cab. The valve assembly includes an exterior valve subassembly for controlling air flow from the shroud assembly to outside the vehicle cab, and the valve assembly also includes an interior valve subassembly for controlling air flow from the shroud assembly to inside the vehicle cab. A handle assembly is capable of being attached to the valve assembly. The valve assembly includes a handle-receiving portion and a guide slot located in an extension assembly.

Abstract: An electric vehicle has a traction motor and apparatus comprising an air circuit for cooling the traction motor, for providing heat, where required, for the cabin of the vehicle, and for ventilating the cabin. The air circuit of the apparatus comprises a main branch containing a main ventilating and heating blower, together with a secondary branch which is branched from the first branch and which contains the cooling radiator for the traction motor. An auxiliary blower is arranged in the secondary branch. An upstream mixing valve and a downstream mixing valve connect these two branches in parallel, in such a way that either: the flow of cabin heating air passes through the radiator; or the mixing valves isolate the secondary branch, so as to form an entirely separate cooling air circuit in which the air flow is produced by the auxiliary blower.

Abstract: A central control unit having an air-distribution control formed as a control knob that has a FLOOR LEVEL setting, a DEFROSTER setting, and a MID-LEVEL setting therebetween.

Abstract: A heater unit of an air mixing apparatus for an automotive vehicle includes a core case for housing a heater core and a distribution case communicating with the core case. The distribution case includes a vent duct connecting port connectable to a vent duct previously fixed to an instrument panel; at least one defroster duct connecting port connectable to at least one defroster duct also previously fixed to the instrument panel; and in particular, a guide duct connectable to a side vent duct extending to a driver seat side and fixed to a vehicle body. Since the guide duct is additionally included with the distribution case, it is possible to previously fix the vent duct extending to the front passenger seat side and defroster ducts to the instrument panel, so that the duct assembly workability is improved markedly and the ducts can be reliably fixed to the instrument panel.

Abstract: An air conditioner suited for use in an automotive vehicle has a plurality of emission modes in which appropriately regulated air is directed to a plurality of locations on the front side of a passenger compartment defined in the automotive vehicle. The air conditioner includes a blower unit for introducing external air into the passenger compartment or circulating internal air and an air chamber formed on the downstream side of the blower unit in the direction of air flow. A rear duct is branched and extends rearwardly from the air chamber so that air from the blower unit may be fed to a rear portion of the passenger compartment through the rear duct. A damper or a blower is mounted in the rear duct to restrict the air volume to be fed to the rear portion of the passenger compartment when the temperature of external air is less than a given value.

Abstract: An air conditioner is provided for a motor vehicle which controls the division of the blow-out air by individually adjusting the blow-out air temperature of the center vent, right side vent and left side vent over a broad temperature range. The blow-out air temperature is controlled from the upper and lower and right and left blow-out parts by the passengers of the motor vehicle to place the cabin of the motor vehicle into a comfortable temperature range. The conditioned air within the conditioned air passages is responsive to load conditions both inside and outside of the passenger compartment to individually adjust the temperature of the conditioned air. A first and second auxiliary duct which introduces cool air from the upstream side of the air mix door and warm air from the downstream side of the heater unit into the conditioned air flows through the right side vent duct, and left side vent duct, respectively.

Abstract: An automotive heater and air conditioning system has multiple zones each supplied by a separate air flow passage serviced by a common blower and common heat exchangers. One of the passages has an adjustable air flow mechanism which bypasses some air from the passage without disturbing the air flow in other passages. A bypass port in the one passage at a point near the blower outlet is controlled by an adjustable door which is pivotally mounted in the passage at the downstream edge of the port. An induction housing receives air from the bypass port and returned it to the intake if the blower.

Abstract: A heating and ventilating apparatus for a motor vehicle includes a cold air admission duct supplying the admission and heating circuit in order to produce a stream of cold or heated air for introduction into the inlet of a distribution circuit having air outlet ducts which exhaust into different parts of the cabin of the vehicle.The apparatus includes a priority demisting duct which is separate from the distribution circuit, and which has an inlet communicating with the admission and heating circuit, together with an outlet which exhausts behind the windshield. A shut-off valve is displaced between a priority demisting position, in which it closes off the inlet of the distribution circuit, and a normal position in which it closes off the inlet of the priority demisting duct.

Abstract: An air-conditioner has a heater core in an air passage. A bypass passage is formed within the air passage and at a side portion of the heater core. A holding shaft is pivotally disposed at the boundary between an air-flow through the heater core and an air-flow through the bypass passage. A sliding shaft is disposed upstream of the heater core and slides to cross a substantially whole area of the air passage. A first end and second end of a variable length damper which varies its length are connected to the sliding shaft and the holding shaft respectively so that the variable length damper moves in such a manner that its length varies in response to a distance between the sliding shaft and the holding shaft.

Abstract: A heating and ventilating apparatus for the cabin or passenger compartment of an automotive vehicle includes a cold air transmission branch and an air heating branch, communicating with each other through a mixing zone and leading respectively to a de-icing port for the windshield of the vehicle, aerators or cabin vents at the level of the fascia panel, and lower outlet ports in the lower part of the cabin. A direct guide duct is arranged with its inlet penetrating partly into the outlet of the air heating branch, and with its outlet opening in the vicinity of the de-icing port, which allows warm air coming from the air heating branch to be mixed with the pre-mixed air coming from the mixing zone.

Abstract: This apparatus includes a housing defining within it a first conduit having at least one internal bulkhead extending partially within a distribution chamber and at right angles to the pivot axis of a distribution valve so as to define at least two adjacent air outlets. The housing also defines within it a second conduit having a further air outlet. The distribution valve comprises vanes which are offset axially and circumferentially from each other, for selectively controlling the distribution of air through the outlets of the first conduit, together with a vane for controlling the distribution of air through the outlet of the second conduit.

Abstract: A vehicle heating and cooling system has a distribution duct separated into two channels by a baffle for supplying separate air streams to the passenger and driver sides of the vehicle compartment. Two temperature control doors associated with the heater core and evaporator separately admit an air mix to the two channels for independent control of driver and passenger side temperature. Optionally a single door is used in place of the two temperature control doors so that at the time of manufacture the system can be configured as a single zone system. A rear air discharge opening is provided in one of the channels to supply a duct leading to the rear seat region of the vehicle compartment.

Abstract: A device for simultaneously adjusting at least two pivoted elements, in particular valves used for air distribution in a vehicle heating or air-conditioning system, has an operating unit with a control disc which is connected to a rotary knob and a control groove which is closed upon itself and into which at least two levers engage which are pivotably accommodated by the operating unit and whose pivoting movements are transmitted to the pivoted elements. Simple tolerance compensation and installation without subsequent setting work is possible when each lever has a separate pivot bearing. The pivoting movements, occurring when the control groove is followed, of the bearing pin of each lever, with a universal-joint arrangement in between which leads away essentially in the axial direction of the bearing pins and permits length compensation, are transmitted from the operating unit to pivoted levers mounted on the heating box side.

Abstract: An air-conditioning system for motor vehicles having an evaporator and a heat exchanger arranged successively in the air flow. A separate air duct having an air outlet opening for the central jet, is connected on the one hand via a cold-air opening to an air-chamber upstream of the heat exchanger and, on the other hand, via a hot-air opening to an air chamber downstream of the heat exchanger. The cross-section of the bypass openings can be controlled by bypass flaps which are coupled with actuators. A control unit with stored characteristics is provided which indicate the correlation between the air quantity and air temperature of the air issuing at the central jet and the position of the bypass flaps. The control unit applies actuation values to the actuators, which actuation values effect a setting of the bypass flaps redetermined by characteristics for a preselected air quantity and air temperature.

Abstract: A filter in the inlet stream of a heating system or air-conditioning system of a motor vehicle for retaining noxious gaseous air components has the form of a tubular section which has air flowing through it transversely. The filter can be sealed at one end by a flap. For the purpose of rapidly implementable desorption with low expenditure, the filter be constructed from layered discs filled with activated carbon. The discs are separated from one another in each case by an intermediate layer consisting of material with good heat-conducting properties. The discs and the intermediate layers are clamped to each other by armatures penetrating the discs in the direction of the central longitudinal axis of the tubular section. The armatures, which have a heat-conducting connection to the intermediate layers, can be heated.

Abstract: To reduce air suction noise in internal air recirculation mode of an air conditioner for an automotive vehicle, a difference in temperature between a target value and an actual value is calculated and the amount of blown air is decreased in the internal air recirculation mode, as compared with that in the external air introduction mode, by reducing a voltage applied to a blower fan motor, only when the calculated temperature difference is a predetermined value or less.

Abstract: In an automotive heater or air conditioner system the temperature control and the mode control for directing air flow to the desired outlet is controlled by a single actuator. A mixing chamber has inlet and outlet end walls for temperature control and mode control, respectively. Each wall has openings for air flow and has an associated rotary door for controlling air flow through the openings. The rotary doors are mounted on a common shaft for simultaneous rotation and the shaft is driven by a single actuator. A heater core is mounted in the chamber adjacent an opening in the inlet end wall. A mixer device blends hot and cold air in the chamber.