Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
  • B60H1/00—Heating, cooling or ventilating [HVAC] devices
  • B60H1/00007—Combined heating, ventilating, or cooling devices
  • B60H1/00021—Air flow details of HVAC devices
  • B60H1/00064—Air flow details of HVAC devices for sending air streams of different temperatures into the passenger compartment
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
  • B60H1/00—Heating, cooling or ventilating [HVAC] devices
  • B60H1/00007—Combined heating, ventilating, or cooling devices
  • B60H1/00021—Air flow details of HVAC devices
  • B60H2001/0015—Temperature regulation
  • B60H2001/00164—Temperature regulation with more than one by-pass
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
  • B60H1/00—Heating, cooling or ventilating [HVAC] devices
  • B60H1/00007—Combined heating, ventilating, or cooling devices
  • B60H1/00021—Air flow details of HVAC devices
  • B60H2001/00185—Distribution of conditionned air
  • B60H2001/002—Distribution of conditionned air to front and rear part of passenger compartment

Definitions

• a heating unit, ventilation unit and/or air-conditioning unit of a vehicle is denoted as an air-conditioning device for a vehicle.
• the vehicle in this case is a motor vehicle such as a passenger motor vehicle or a utility vehicle.
• Air-conditioning devices are intended to provide in a reliable manner a pleasant internal environment in very different types of vehicle. This is intended to be the case both in the front region and in the rear region of a vehicle, and in the respective footwell and in the seating region of the vehicle occupants, also denoted hereinafter as the ventilation regions.
• known air-conditioning devices have different air-conditioning mixing zones for the front region and the rear region, i.e. for the region of the front seats and the rear seats of a vehicle and for different zones in these regions.
• the air-conditioning of the rear region in this case is controlled by a separate mixing flap, generally one or more distributor flaps being arranged downstream of said mixing flap for distributing the air between the footwell and the ventilation region.
• "Arranged downstream" within the context of the present invention means that an element is located in a direction of flow of the air on a downstream side of the corresponding reference component.
• EP 1 634 735 B2 and US 2008 032617 Al disclose a temperature control for a vehicle rear region by means of a first mixing flap and the distribution of the air to the rear regions by means of an air distribution flap.
• the defrosting is controlled by means of a principal flap depending on the position of the distribution flap to the rear region.
• the principal flap is not able to be controlled independently, which reduces the convenience of the air-conditioning .
• DE 1995 5616 CI discloses an air-conditioning device in which optionally a greater quantity of air is guided into the rear region or into the front region of the vehicle but without the entire quantity of air being available in the air-conditioning system for a defrost mode. This extends the time required for defrosting.
• an object of the invention to provide an air-conditioning device which permits the volumes of air to be distributed in the respectively desired manner under different operating conditions and at a lower cost.
• the throttle flap is able to be controlled independently. This means that the throttle flap may be controlled without one of the remaining flaps, in particular one of the regulating flaps for the air supply, having to be adjusted. Also, the control may be adjusted independently of any flaps arranged downstream, as will be shown in more detail hereinafter .
• the flow cross section in this case may be varied by the throttle flap in a range between 0% and 100% of the flowing air. This adjustment may be carried out in a stepless or stepwise manner. In this manner, it is also permitted, in particular, to regulate a control of the volumetric flow which is to be supplied to a specific vehicle region, in this case a second vehicle region, independently of the volumetric flows which are to be supplied to other regions, in particular a first vehicle region.
• a specific vehicle region in this case a second vehicle region
• the first control flap may open in a controlled manner a bypass channel through which air is able to be conducted past the heat exchanger to the air-conditioning mixing zone.
• the air may be easily temperature-controlled in the air-conditioning mixing zone.
• the air-conditioning device for a vehicle comprises a first air-conditioning mixing zone and a second air-conditioning mixing zone.
• the second air-conditioning mixing zone contains a first air supply channel and a second air supply channel.
• the air-conditioning device comprises at least one mixing flap arranged between the first and second airflow channels, said mixing flap being able to control an air supply into the first and/or the second airflow channels.
• the mixing flap also denoted as the first control flap, is able to adjust an air supply into both the first air supply channel and the second air supply channel in a range between 0% and 100% of the possible air volume flowing therethrough.
• each of the two air supply channels may also be completely closed by the mixing flap.
• a heating apparatus may be arranged in the second air supply channel in order to heat the air flowing through the second air supply channel.
• the air is then conducted from the air-conditioning mixing zones into the desired vehicle regions, i.e. for example the rear or front, the footwell or ventilation region or further designated zones.
• a principal flap is arranged on a downstream side of the second airflow channel, said principal flap being able to control an air supply to the first air-conditioning mixing zone and/or to the second air-conditioning mixing zone.
• the heat exchanger is configured as a heating apparatus.
• one of the control flaps in the present case the second control flap, is arranged downstream of the heating apparatus.
• a quantity of generated warm air which is able to be determined, may be conducted into the air-conditioning mixing zone and mixed there with cold air.
• a temperature of the vehicle interior may be adj usted .
• an air discharge channel leading away from the second air-conditioning mixing zone may also be configured with at least one volume control flap.
• At least one throttle valve is arranged in the air discharge channel in order to vary the flow cross section of the air flowing out of the second air- conditioning mixing zone into at least one part of the air discharge channel.
• a volumetric flow of air may be adjusted in a simple manner in the air discharge channel. This adjustment may be easily undertaken for the ventilation systems of very different types of vehicle.
• the air-conditioning device according to the invention may be used for different types of vehicle. Therefore, a more universal use of the air-conditioning device may be implemented which is able to reduce the complexity of the design and construction which is dependent on the type of vehicle. Due to the possible integral construction of the air-conditioning device, this may also reduce production costs. In this manner the air-conditioning may also be corrected by the possible use of a booster in some operating modes for the rear region.
• the air-conditioning device permits an improved and more convenient control of the total airflow in the rear region than is possible in the previously known cooling, heating and air- conditioning units.
• an adjustment of an air-conditioned zone supplied with air may take place independently of other air-conditioned zones, in particular vehicle regions.
• the air- conditioning device is configured so that the air discharge channel comprises at least one first air outlet channel and at least one second air outlet channel which in each case are arranged downstream of the throttle flap.
• the airflow and, as a result, also the flow pressure which is intended to be conducted through the air discharge channel to the different regions of a vehicle interior may be controlled or regulated by means of the throttle flap.
• the air-conditioning zones of the vehicle may be controlled in a more convenient manner for the passengers.
• the airflow from the second air-conditioning mixing zone may be controlled independently of the airflow and the flap control of the first air-conditioning mixing zone. This permits, in particular, a four-zone air-conditioning system of a vehicle region, in particular of the rear of the vehicle .
• the air- conditioning device for a vehicle is configured such that the air discharge channel comprises at least one first air outlet channel and at least one second air outlet channel, wherein the throttle flap is configured in at least one of the air outlet channels.
• the throttle flap may be configured in one or more air discharge channels, which conduct an airflow to the ventilation region of the rear of a vehicle. This permits a four-zone air-conditioning system or even a three-zone air-conditioning system of a vehicle region, in particular the rear of the vehicle.
• the provision of the throttle flap in an air outlet channel may result in an improved regulation of the airflow and the air pressure in the air outlet channel.
• At least one volume control flap is configured in at least one of the air outlet channels.
• a volume control flap may be configured in an air outlet channel which leads to a rear footwell of the vehicle.
• the throttle flap may be arranged, on the one hand, upstream of the air outlet channel.
• the throttle flap is provided in an air outlet channel which does not lead to the rear footwell, but for example the ventilation region of the rear region.
• an accurate adjustment of the air supply may be undertaken by means of the throttle flap, as required. This may permit improved air-conditioning by means of the air- conditioning device.
• the volume control flap arranged in the air outlet channel and/or at least one volume control flap arranged in the air outlet channel is arranged downstream of the throttle flap.
• the flow cross section may be adapted and the air distributed in a targeted manner and as required.
• the air may be discharged to a vehicle region in a more independent manner relative to the air discharged to a further vehicle region.
• the throttle flap is configured in an air discharge channel parallel to an air discharge channel in which a volume control flap is configured.
• a volume control flap may also be configured in the air discharge channel in which the throttle flap is configured.
• At least one volume control flap is configured such that an airflow passing through the volume control flap is able to be adjusted between 0% and 100%. In this manner, the flow cross section, the flowing volume of air and the air distribution for the vehicle region to which air is delivered may be more easily controlled.
• Such a development may, in particular, permit a three-zone air-conditioning system or a four-zone air conditioning system, wherein an independent control or regulation of the vehicle air- conditioned zones may be permitted.
• the first control flap i.e. the mixing flap
• the second control flap i.e. the principal flap
• the throttle flap of the air-conditioning device are controlled by a common kinematic system.
• This coupling may, for example, take place via a sliding block guide and associated guide disc.
• the kinematic system for adjusting the flaps, in particular for adjusting the throttle flap, in this case in a number of embodiments is the kinematic system for controlling the rear ventilation region which is also denoted as the third zone.
• the throttle flap is controlled together with the kinematic system of the mixing flap or the principal flap, wherein the flap not contained in the kinematic system may be controlled independently thereof .
• the volume control flaps of the air discharge channels are controlled by a common kinematic system.
• the volume control flaps are controlled for a region, for example for a rear footwell, by a kinematic system which differs from a kinematic system which is used for a control of a different region, for example the rear ventilation region. Both of these kinematic systems or at least one thereof may differ from the kinematic systems of the third zone.
• the use of a throttle flap in an air discharge channel does not exclude the use, in particular, of a volume control flap in the same and/or in the remaining air discharge channels.
• the embodiments of the invention set forth above are also possible in combination with one another .
• the throttle flap may be configured in the air-conditioning device such that said throttle flap may be controlled independently of at least one of the volume control flaps used.
• the throttle flap together with the kinematic system of the third zone, or independently thereof may control an air supply and thus an air pressure drop at least in one part of the air outlet channel, in particular in one of the air discharge channels.
• an air-conditioning of a region supplied by the air outlet channel for example the rear of a vehicle, may be air-conditioned in a more independent manner relative to the remainder of the vehicle.
• the air-conditioning device may reliably provide a maximum quantity of warm air if required, for example for defrosting a windshield.
• An adjustment of the volume control flaps of the rear region, cited in this example may be avoided according to the invention in such a defrost mode.
• fig. 1 shows an air-conditioning device according to the invention, according to a first embodiment in a schematic section, wherein the air-conditioning device is shown in a first position
• fig. 2 shows the air-conditioning device of fig. 1 in a second position
• fig. 3 shows the air-conditioning device of fig. 1 in a third position
• fig. 4 shows a schematic view of an air outlet channel according to the first embodiment of the invention
• fig. 5 shows a three-dimensional sectional view of the air-conditioning device of the first embodiment
• fig. 6 shows a schematic view of an air outlet channel according to a second embodiment of the invention
• fig. 1 shows an air-conditioning device according to the invention, according to a first embodiment in a schematic section, wherein the air-conditioning device is shown in a first position
• fig. 2 shows the air-conditioning device of fig. 1 in a second position
• fig. 3 shows the air-conditioning device of fig. 1 in a third
• FIG. 7 shows a three-dimensional sectional view of an air outlet channel of the air-conditioning device of the second embodiment; and fig. 8 shows a schematic view of an air outlet channel according to a third embodiment of the invention .
• An air-conditioning device 1 is shown in fig. 1, said air-conditioning device being provided, in particular, for installation in a motor vehicle.
• the air- conditioning device has a cold air supply region 2.
• the air-conditioning device 1 has a first air-conditioning mixing zone 4 and a second air- conditioning mixing zone 6.
• a first flap 3 is arranged between the first air- conditioning mixing zone 4 and the cold air supply region 2 along a first flow channel. Additionally, a heating flap 5 is provided between the first air- conditioning mixing zone 4 and the cold air supply region 2 along a second flow channel, followed by a heating device (heat exchanger 7) . Air may pass, therefore, either through the flap 3 or through the flap 5 and the heating device 7 to the first air- conditioning mixing zone 4. By controlling the opening of the flaps 3 and 5, therefore, a predeterminable mixing ratio of cold air and air which is heated in the heating device 7, may be adjusted for the air- conditioning mixing zone 4.
• the solid line of the flap 3 defines the closed position of the flap 3 and the dashed line defines the open state of the flap 3.
• the dashed line defines the closed state.
• a first control flap 8 hereinafter denoted as the mixing flap, is provided between the cold air flow region 2 and the second air-conditioning mixing zone 6 along a first air supply channel 8a, hereinafter also denoted the bypass.
• the mixing flap 8 is configured such that the bypass 8a may be fully closed. This is shown in fig. 1 by the thick line of the flap 8.
• a heating apparatus is provided between the cold air supply region 2 and the second air-conditioning mixing zone 6 along a second air supply channel 8b, said heating apparatus representing a part of the already disclosed heating apparatus 7 in the embodiment shown.
• a second control flap 10 Arranged downstream of the heating apparatus 7 is a second control flap 10, hereinafter denoted the principal flap.
• the principal flap 10 is configured such that a connection between the second air supply channel 8b and the second air-conditioning mixing zone 6 may be closed.
• the principal flap 10 may open a connection of the second air supply channel 8b to the first air-conditioning mixing zone 4.
• all air which has passed through the heating apparatus is either conducted through the second air supply channel 8b or through the heating flap 5 to the first air-conditioning mixing zone 4, as required. This is required, for example, in a so-called defrost mode for rapid defrosting of the windshield.
• the principal flap 10 in this case is configured as a double-winged flap which, when a connection to the first air-conditioning mixing zone 4 is opened, closes the connection to the second air-conditioning mixing zone 6 and vice versa.
• the thick line of the principal flap 10 represents a position in which the connection to the second air-conditioning mixing zone 6 is opened to maximum extent and a connection to the first air-conditioning mixing zone 4 is closed.
• the thin line of the principal flap 10 shows a position in which the opening to the first air-conditioning mixing zone 4 is at a maximum and the opening to the second air-conditioning mixing zone 6 is closed.
• the principal flap 10 may, however, also adopt any positions located therebetween .
• the mixing flap 8 is configured between the air supply channels 8a and 8b such that it may optionally close one of the air supply channels 8a, 8b or adopt any intermediate position so that a predeterminable airflow ratio flows through the air supply channels. In this manner, the quantity of air which is intended to be heated in the heating apparatus 7 is controlled and thus a desired temperature control of the air may be undertaken in the second air-conditioning mixing zone 6.
• An air discharge channel 16 leads away from the second air-conditioning mixing zone 6. This conducts the air to a vehicle region (not shown) , for example to the rear region of the vehicle.
• the air discharge channel 16 has two air outlet channels 11a, lib.
• the air outlet channels 11a, lib serve to conduct the air to different regions of an air-conditioning zone.
• the air outlet channel 11a may conduct the air to a vehicle rear ventilation region and the air outlet channel lib may conduct the air to a vehicle rear footwell.
• a volume control flap 12a, 12b is provided in each of the air outlet channels 11a, lib.
• the volume control flaps 12a, 12b serve for the adjustment of the airflow which flows through said flaps and for the air distribution, for dividing up a proportion of the air which is intended to flow along the first air outlet channel 11a and along the second air outlet channel lib.
• the volume control flap 12a is open and the volume control flap 12b is closed, so that a maximum airflow flows through the air outlet channel 11a.
• a throttle flap 14 is additionally provided in the air discharge channel 16, said throttle flap being arranged in this case upstream of the volume control flaps 12a, 12b.
• the throttle flap 14 is configured such that it may control or regulate the air volume flowing through the air discharge channel 16.
• the throttle flap permits the ratio of the air distribution between different air discharge channels of the air-conditioning device to be adjusted, without a complicated readjustment being required by means of the mixing flap and/or the principal flap. As a result, the adjustment of the volumetric flow may be undertaken independently of the other air-conditioning zones of the vehicle.
• the thick line of the throttle flap 14 denotes in fig. 1 an open position.
• the throttle flap 14 may also be fully closed, as is indicated by the thin line. Additionally, the throttle flap may adopt any intermediate position between the closed state and the open state.
• the air-conditioning device 2 of fig. 1 is shown in fig. 2, wherein the principal flap 10 is in a defrosting position.
• the principal flap 10 is in a position in which the connection to the second air-conditioning mixing zone 6 is closed and the connection from the second air supply channel 8b to the first air-conditioning mixing zone 4 is open.
• the mixing flap 8 closes the bypass 8a.
• the flap 3 is closed.
• defrost mode a maximum air volume passes through the heating apparatus 7 and may be used for defrosting. Therefore, this mode of operation is denoted as defrost mode.
• the air distribution flaps 12a, 12b or the throttle flap 14 do not have to be adjusted.
• a position of the flaps is shown in fig. 3 in which a maximum cooling may take place.
• the flow channels which lead to the heating apparatus are closed. This means that the heating flap 5 closes the supply to the heating apparatus 7. Additionally, the mixing flap 8 closes the second air supply channel 8b. As a result, the bypass 8a is fully opened. Additionally, the flap 3 is fully opened.
• the air, which is preferably cooled, from the cold air supply is conducted directly into the air-conditioning mixing zones 4 and 6. This is indicated by the curved arrows in fig. 3.
• Fig. 3 also shows that the volume control flap 12a is closed and the volume control flap 12b is open. This control may take place independently of the mixing flap 8 or the principal flap 10. Additionally, the adjustment of the ratio of a first air volume to a front region of a vehicle from the first air- conditioning mixing zone 4 to a second air volume from the second air-conditioning mixing zone 6 through the air discharge channel 16 to a rear region of a vehicle may be solely controlled by the throttle flap 14, independently of the remaining flaps.
• Fig. 4 shows a schematic view of the flow channels of the embodiment described above.
• air coming from the air discharge channel 16 passes through the throttle flap 14 and into a plurality of air outlet channels 11a, lib.
• the air outlet channels are, therefore, preferably configured and arranged in an appropriate manner.
• the air coming out of the throttle flap 14 is conducted into two air outlet channels lib which may serve to supply, for example, a rear footwell. Additionally, the air is conducted into two air outlet channels 11a which may serve to supply, for example, a rear ventilation region.
• the air outlet channels 11a, lib in each case have a volume control flap 12a, 12b for adjusting the air flow ratio in the respective channels 11a, lib.
• a total of four air outlet channels 11a, lib and four volume control flaps 12a, 12b are present so that a four-zone air- conditioning system is possible.
• Fig. 5 shows a three-dimensional view of the air- conditioning device 1 similar to the above-described fig. 3.
• the throttle flap 14 is arranged on an upstream side of the air discharge channel 16, upstream of the volume control flap 12a, 12b (not shown here) .
• the throttle flap 14 may be coupled to the kinematic system of the third zone of the air-conditioning device 1.
• the third zone of the air-conditioning device 1 is the air-conditioning zone for the rear region of the vehicle which is served by the mixing flap 8 and the principal flap 10.
• Fig. 6 shows an air discharge channel of an alternative embodiment of the invention.
• the throttle flap 14 is not configured in the entire air discharge channel 16, as shown in fig. 4.
• throttle flaps 14 are arranged in the air outlet channels 11a.
• the air outlet channels lib are only influenced by the throttle flap to a limited extent. Only the variable dynamic pressure on an upstream side of the throttle flap 14, i.e. in the air- conditioning mixing zone 6, influences the volumetric flow through the air outlet channels.
• volume control flaps 12b which are arranged in the air outlet channels lib may be configured as volume control flaps which permit a control or regulation of the air through- passage volume of between 0% and 100%.
• This control and/or regulation may take place in a stepless or stepwise manner. This control or regulation may also be limited to an interval between the minimum and maximum volumetric flows.
• the throttle flap(s) 14 may in turn be coupled to the kinematic system of the third zone of the air-conditioning device 1 and activated, independently of the volume control flap 12b.
• Fig. 7 shows a three-dimensional view of the embodiment according to fig. 6.
• only one respective throttle flap 14 is provided in the air outlet channels 11a.
• the air may be throttled in the air outlet channels 11a which are intended to supply the rear ventilation region.
• Fig. 8 shows a further alternative for an air discharge channel 16 of an air-conditioning device 1 according to the invention.
• the throttle flap is again provided in an air outlet channel 11a which is intended to guide the air, for example, to a rear ventilation region. In the embodiment shown in fig. 8, however, this is only one air outlet channel 11a.
• only one throttle flap 14 is configured for controlling the through-passage of air.
• air outlet channels lib are provided, said air outlet channels serving, for example, for supplying a rear footwell.
• the embodiment according to fig. 8 represents a three-zone air- conditioning device.
• air outlet nozzles 13a are arranged downstream of the throttle flap 14. Said air outlet nozzles permit an air distribution of the air flowing in the air outlet channel 11a, in the rear region of the vehicle. They may also be adjusted manually. Additionally, this may permit an adjustment of the airflow of between 0% and 100%.
• air outlet nozzles are configured to discharge air into the vehicle interior, in particular into the rear of the vehicle. Said air outlet nozzles may permit a control of the air supply, either manually, semi- automatically or automatically.
• the air outlet nozzles 13a may be provided, for example, in a central console of the rear region.

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• Physics & Mathematics (AREA)
• Thermal Sciences (AREA)
• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Air-Conditioning For Vehicles (AREA)

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Citations (9)

• 2014
  • 2014-07-15 DE DE102014109925.7A patent/DE102014109925A1/de active Pending
• 2015
  • 2015-06-23 WO PCT/EP2015/064154 patent/WO2016008684A1/en active Application Filing

Patent Citations (10)

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