EP2381110B1 - Motor vehicle air conditioning - Google Patents
Motor vehicle air conditioning Download PDFInfo
- Publication number
- EP2381110B1 EP2381110B1 EP11162589.3A EP11162589A EP2381110B1 EP 2381110 B1 EP2381110 B1 EP 2381110B1 EP 11162589 A EP11162589 A EP 11162589A EP 2381110 B1 EP2381110 B1 EP 2381110B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- ring
- conditioning system
- vehicle air
- shield
- hub
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Not-in-force
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/26—Rotors specially for elastic fluids
- F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
- F04D29/281—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers
- F04D29/282—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers the leading edge of each vane being substantially parallel to the rotation axis
- F04D29/283—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers the leading edge of each vane being substantially parallel to the rotation axis rotors of the squirrel-cage type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
- F04D25/0606—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
- F04D29/701—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps
- F04D29/703—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps specially for fans, e.g. fan guards
Definitions
- the invention relates to an automotive air conditioning system according to the preamble of claim 1.
- the motor vehicle air conditioner generally comprises a refrigerant evaporator for cooling the air and a heating device for heating the air.
- a blower serves to circulate or convey the air through the motor vehicle air conditioning system. The air is sucked in from the environment of the motor vehicle or from the interior of the motor vehicle, then passed to the refrigerant evaporator and the heating device and subsequently supplied to the motor vehicle interior.
- the fan is arranged within a fan housing and has an impeller, a drive shaft and an electric motor. By means of the electric motor, the impeller is driven, so that on the impeller trained blades on a hub can promote or circulate the air.
- the object of the present invention is therefore to provide an automotive air conditioning system in which the electric motor is protected against water and moisture and a freezing of the impeller is substantially excluded.
- an automotive air conditioning system comprising a housing, a fan with an impeller, a drive shaft and an electric motor, wherein the impeller has a hub and blades for circulating the air and the electric motor is arranged below the impeller, preferably a refrigerant evaporator for cooling an air to be supplied to a vehicle interior, a heater for heating the air to be supplied to the vehicle interior, the impeller being provided with a liquid-tight closed screen for shielding water from the electric motor.
- the formation of the impeller, in particular the hub, above the electric motor as a liquid-tight closed screen causes that guided from above towards the electric motor water, especially in the form of steam, mist or water drops, does not reach the electric motor and the screen radially is derived to the outside.
- the liquid-tight closed screen has no opening, so that in a direction from top to bottom of the screen is liquid-tight and thus no liquid can be passed through the screen.
- the hub is formed as the liquid-tight closed screen and / or the impeller is formed in the axial direction of the drive shaft above the electric motor as the liquid-tight closed screen and / or the hub is at a projection portion of the electric motor to the hub parallel to an axis of the drive shaft is formed as a liquid-tight closed screen, and preferably the hub is additionally formed at a radial distance of less than 5 cm, 2 cm or 1 cm to the projection portion as the liquid-tight closed screen.
- the impeller is formed radially outside of the electric motor as the liquid-tight closed screen.
- the screen is formed as a disk or a dome.
- the shield formed as a dome in the radial direction outwards on the upper side, in particular continuous, gradient.
- the shield formed as a dome in the radial direction outwards on the underside, in particular continuous slope.
- the screen has on one upper side a convex surface and / or on one lower side a concave surface.
- the drive shaft is oriented substantially vertically.
- a substantially vertical orientation of the drive shaft preferably means that the drive shaft is aligned with a deviation of less than 30 °, 20 °, 10 °, 5 ° or 2 ° to a vertical plane or vertical straight line.
- the liquid-tight screen is formed at a radial end portion as a ring and the slope of the ring is upper side smaller than the slope of the screen within the ring on the upper side, in particular as the slope of the screen on the upper side within the ring at a radial distance of less than half the radius of the screen.
- the ring thus also has a slight downward gradient on the upper side, so that water which flows out of the screen in the area inside the ring to the ring can also flow out radially on the ring to the outside.
- the liquid-tight screen is formed at a radial end portion as a ring and the slope of the ring underside is smaller than the slope of the screen within the ring below, especially as the slope of the screen below the inside of the ring at a radial distance of less as half the radius of the screen.
- the liquid-tight screen in particular the ring. and / or the blades are provided on the underside in a radial end region with an annular drip nose.
- annular drip nose the water flowing from the top of the ring to the bottom of the ring dripping, so that this water drips down selectively at the drip tip below the impeller. This should allow a targeted and controlled discharge of the water.
- the drive shaft is fastened to a fixing opening in the hub
- the fixation opening is formed as a bore completely piercing the hub and the drive shaft with respect to the hub is sealed liquid-tight at the bore or the fixation opening is formed as a downwardly formed bore and above the fixation opening of the liquid-tight screen of the hub is continued and / or the impeller is integrally formed, in particular made of plastic.
- the hub or the screen is thus formed liquid-tight in the region of the fixing opening with the drive shaft arranged therein.
- the electric motor is fastened to the housing by means of a motor holder which encloses the electric motor at least partially, in particular completely, and / or the electric motor is an electrically commutated, brushless motor.
- the motor holder in the radial direction outwards on the top and / or bottom side, in particular continuous slope on.
- impinging water on the motor holder can be discharged radially outward, so that no water can reach the electric motor arranged radially inside the motor holder.
- the gradient of the motor holder is formed in a ring portion below the liquid-tight screen and preferably additionally radially outside of the ring portion.
- At least one annular step is formed in the ring portion and preferably outside the ring portion.
- the refrigerant evaporator and the, preferably electrical, heating device are arranged within the housing of the motor vehicle air conditioning system.
- the motor vehicle air conditioning system has at least one channel for passing air through.
- the motor vehicle air conditioning system expediently comprises at least one air filter.
- the refrigerant evaporator and / or the, preferably electrical, heating device and / or the at least one air filter are arranged within the at least one channel.
- the at least one air filter in the flow direction of the air upstream of the fan is arranged as a suction-side air filter and / or in the flow direction of the air downstream of the fan as a pressure-side air filter.
- the motor vehicle air conditioning system has at least one air guiding device, eg, at least one air flap and / or at least one screen and / or at least one conveyor belt, by means of which or to which the air quantity controllable by the at least one channel can be controlled.
- at least one air guiding device eg, at least one air flap and / or at least one screen and / or at least one conveyor belt, by means of which or to which the air quantity controllable by the at least one channel can be controlled.
- the housing of the motor vehicle air conditioning at least partially made of plastic.
- the at least one channel for the passage of air from a wall of the housing is limited.
- An automotive air conditioning system with a housing 2 is used for cooling and / or heating of an interior of a motor vehicle, not shown, air to be supplied.
- a refrigerant evaporator for cooling the air to be supplied to the vehicle interior, and a heater for heating the air to be supplied to the vehicle interior are arranged.
- the refrigerant evaporator and the heater are arranged within a trapped or bounded by the housing 2 channel.
- the blower 3 has a blower housing 4 as part of the housing 2 of the motor vehicle air conditioner on.
- the blower housing 4 limits a flow space 24 and has an intake opening 23 for sucking in air.
- an impeller 5, a drive shaft 6 and an electric motor 7 is arranged within the blower housing 4, within the blower housing 4, an impeller 5, a drive shaft 6 and an electric motor 7 is arranged.
- the impeller 5 is mechanically connected to the electric motor 7, so that thereby the impeller 6 performs a rotational movement with a rotation axis as an axis 1 of the drive shaft 6 of the electric motor 7.
- the impeller 5 has a hub 8 with blades 9 arranged thereon ( Fig. 1 to 3 ).
- At the hub 8 is formed centrally as a bore 17 formed fixing opening 16.
- the bore 17 has any cross-section, for example, it is circular, square or triangular, in the bore 17, the drive shaft 6 is fixed ( Fig. 1 ).
- the hub 8 of the impeller 5 is formed as a screen 10 in the form of a dome 11.
- An upper side 12 and an underside 13 of the screen 10 has a gradient in the radial direction outward away from the axis 1.
- water impinging on the upper side 12 of the screen 10 or the hub 8 is conducted radially outwards to form a ring 14 at a radial end section of the screen 10.
- the blades 9 pierce the ring 14 slightly, so that even below the ring 14, a small portion of the blades 9 is present, which form a cooling trough 26 ( Fig. 1 to 3 ).
- the cooling flow 26 serves to circulate the air between the screen 10 and the electric motor 7 for cooling the electric motor 7.
- a completely circumferential stabilizing ring 18 is provided to fix or stabilize also at the upper end of the blades 9 to allow the blades 9.
- the upper stabilizing ring 18 is in the view from below in Fig. 2 not shown.
- a projection section 25 of the electric motor 7 is formed on the hub 8. This projection is in Fig. 1 shown with two dashed lines from the electric motor 7 to the hub 8.
- the electric motor 7 is fixed by means of a ring-like motor holder 19 made of plastic and a tongue and groove connection 22 as a releasable connection means to the fan housing 4.
- the motor holder 19 has a gradient in a radial direction with increasing distance from the electric motor 7.
- an annular step 21 is formed on the motor holder 19.
- An upper side 20 of the motor holder 19 thus has a gradient from the electric motor 7 to the tongue and groove connection 22.
- the sucked air is sucked at the suction port 23 substantially in a direction parallel to the axis 1 of the drive shaft 6 down and then conveyed radially outwardly of the blades 9 relative to the axis 1 in the flow space 24.
- In the air sucked through the suction port 23 may be water, for example in the form of vapor, mist or water droplets contained.
- the lower end of the blades 9 or the cooling trough 26 can likewise have the same geometry as the drip nose 15 (not shown) or the lower end of the blades 9 or the cooling trough 26 has a triangular shape (in FIG Fig. 1 shown in dashed lines) and thus also forms a triangular drip 15.
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- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
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Description
Die Erfindung betrifft eine Kraftfahrzeugklimaanlage gemäß dem Oberbegriff des Anspruches 1.The invention relates to an automotive air conditioning system according to the preamble of claim 1.
Kraftfahrzeugklimaanlagen werden in Kraftfahrzeugen zum Kühlen und/oder Erwärmen von einem Innenraum des Kraftfahrzeuges zuzuführender Luft eingesetzt. Die Kraftfahrzeugklimaanlage umfasst dabei im Allegemeinen einen Kältemittelverdampfer zum Kühlen der Luft und eine Heizeinrichtung zum Erwärmen der Luft. Ein Gebläse dient zum Umwälzen bzw. Fördern der Luft durch die Kraftfahrzeugklimaanlage, Von dem Gebläse wird die Luft aus der Umgebung des Kraftfahrzeuges oder aus dem Innenraum des Kraftfahrzeuges angesaugt, anschließend zu dem Kältemittelverdampfer und der Heizeinrichtung geleitet und darauffolgend dem Kraftfahrzeuginnenraum zugeführt. Das Gebläse ist innerhalb eines Gebläsegehäuses angeordnet und weist dabei ein Laufrad, eine Antriebswelle und einen Elektromotor auf. Mittels des Elektromotors wird das Laufrad angetrieben, so dass an dem Laufrad ausgebildete Schaufeln an einer Nabe die Luft fördern bzw. umwälzen können.Automotive air conditioning systems are used in motor vehicles for cooling and / or heating of an interior of the motor vehicle to be supplied air. The motor vehicle air conditioner generally comprises a refrigerant evaporator for cooling the air and a heating device for heating the air. A blower serves to circulate or convey the air through the motor vehicle air conditioning system. The air is sucked in from the environment of the motor vehicle or from the interior of the motor vehicle, then passed to the refrigerant evaporator and the heating device and subsequently supplied to the motor vehicle interior. The fan is arranged within a fan housing and has an impeller, a drive shaft and an electric motor. By means of the electric motor, the impeller is driven, so that on the impeller trained blades on a hub can promote or circulate the air.
Beim Ansaugen der Luft durch das Gehäuse kann Wasser oder Feuchtigkeit, beispielsweise in Form von Dampf oder Nebel, zu dem Laufrad und dem Elektromotor gelangen und insbesondere den Elektromotor beschädigen. Auch bei der Anordnung eines saugseitigen Luftfilters in der Kraftfahrzeugklimaanlage kann Wasser oder Feuchtigkeit zu dem Laufrad oder dem Gebläse gelangen. Bei Temperaturen von weniger als 0°C besteht außerdem die Gefahr des Festfrierens des Laufrades an einem Motorhalter für den Elektromotor oder ein Festfrieren des Motors selbst.When the air is drawn through the housing, water or moisture, for example in the form of vapor or mist, can reach the impeller and the electric motor and, in particular, damage the electric motor. Even with the arrangement of a suction-side air filter in the automotive air conditioning system, water or moisture can reach the impeller or blower. At temperatures of less than 0 ° C there is also the risk of freezing of the impeller on a motor holder for the electric motor or freezing of the motor itself.
Aus der
Die Druckschrift
Die Aufgabe der vorliegenden Erfindung besteht deshalb darin, eine Kraftfahrzeugklimaanlage zur Verfügung zu stellen, bei welcher der Elektromotor vor Wasser und Feuchtigkeit geschützt und ein Festfrieren des Laufrades im Wesentlichen ausgeschlossen ist.The object of the present invention is therefore to provide an automotive air conditioning system in which the electric motor is protected against water and moisture and a freezing of the impeller is substantially excluded.
Diese Aufgabe wird gelöst mit einer Kraftfahrzeugklimaanlage, umfassend ein Gehäuse, ein Gebläse mit einem Laufrad, einer Antriebswelle und einem Elektromotor, wobei das Laufrad eine Nabe und Schaufeln zum Umwälzen der Luft aufweist und der Elektromotor unterhalb des Laufrades angeordnet ist, vorzugsweise einen Kältemittelverdampfer zum Kühlen einer einem Fahrzeuginnenraum zuzuführenden Luft, eine Heizeinrichtung zum Erwärmen der dem Fahrzeuginnenraum zuzuführenden Luft, wobei das Laufrad mit einem flüssigkeitsdichten geschlossenen Schirm versehen ist zur Abschirmung von Wasser von dem Elektromotor.This object is achieved with an automotive air conditioning system comprising a housing, a fan with an impeller, a drive shaft and an electric motor, wherein the impeller has a hub and blades for circulating the air and the electric motor is arranged below the impeller, preferably a refrigerant evaporator for cooling an air to be supplied to a vehicle interior, a heater for heating the air to be supplied to the vehicle interior, the impeller being provided with a liquid-tight closed screen for shielding water from the electric motor.
Die Ausbildung des Laufrades, insbesondere der Nabe, oberhalb des Elektromotors als ein flüssigkeitsdichter geschlossener Schirm bewirkt, dass von oben in Richtung zu dem Elektromotor geführtes Wasser, insbesondere in Form von Dampf, Nebel oder Wassertropfen, nicht zu dem Elektromotor gelangt und von dem Schirm radial nach außen abgeleitet wird.The formation of the impeller, in particular the hub, above the electric motor as a liquid-tight closed screen causes that guided from above towards the electric motor water, especially in the form of steam, mist or water drops, does not reach the electric motor and the screen radially is derived to the outside.
In einer ergänzenden Ausgestaltung weist der flüssigkeitsdichte geschlossene Schirm keine Öffnung auf, so dass in einer Richtung von oben nach unten der Schirm flüssigkeitsdicht ist und somit durch den Schirm keine Flüssigkeit durchgeleitet werden kann.In a supplementary embodiment, the liquid-tight closed screen has no opening, so that in a direction from top to bottom of the screen is liquid-tight and thus no liquid can be passed through the screen.
Insbesondere ist die Nabe als der flüssigkeitsdichte geschlossene Schirm ausgebildet und/oder das Laufrad ist in axialer Richtung der Antriebswelle oberhalb des Elektromotors als der flüssigkeitsdichte geschlossene Schirm ausgebildet und/oder die Nabe ist an einem Projektionsabschnitt des Elektromotors auf die Nabe parallel zu einer Achse der Antriebswelle als ein flüssigkeitsdichter geschlossener Schirm ausgebildet und vorzugsweise ist die Nabe zusätzlich in einem radialen Abstand von weniger als 5 cm, 2 cm oder 1 cm zu dem Projektionsabschnitt als der flüssigkeitsdichte geschlossene Schirm ausgebildet.In particular, the hub is formed as the liquid-tight closed screen and / or the impeller is formed in the axial direction of the drive shaft above the electric motor as the liquid-tight closed screen and / or the hub is at a projection portion of the electric motor to the hub parallel to an axis of the drive shaft is formed as a liquid-tight closed screen, and preferably the hub is additionally formed at a radial distance of less than 5 cm, 2 cm or 1 cm to the projection portion as the liquid-tight closed screen.
In einer zusätzlichen Ausgestaltung ist das Laufrad radial außerhalb des Elektromotors als der flüssigkeitsdichte geschlossene Schirm ausgebildet.In an additional embodiment, the impeller is formed radially outside of the electric motor as the liquid-tight closed screen.
In einer weiteren Ausgestaltung ist der Schirm als eine Scheibe oder ein Dom ausbildet.In a further embodiment, the screen is formed as a disk or a dome.
In einer ergänzenden Ausführungsform weist der als Dom ausgebildete Schirm in radialer Richtung nach außen oberseitig ein, insbesondere stetiges, Gefälle auf.In a supplementary embodiment, the shield formed as a dome in the radial direction outwards on the upper side, in particular continuous, gradient.
Vorzugsweise weist der als Dom ausgebildete Schirm in radialer Richtung nach außen unterseitig ein, insbesondere stetiges, Gefälle auf.Preferably, the shield formed as a dome in the radial direction outwards on the underside, in particular continuous slope.
In einer weiteren Ausführungsform weist der Schirm an einer Oberseite eine konvexe Oberfläche auf und/oder an einer Unterseite eine konkave Oberfläche.In a further embodiment, the screen has on one upper side a convex surface and / or on one lower side a concave surface.
In einer Variante ist die Antriebswelle im Wesentlichen vertikal ausgerichtet.In a variant, the drive shaft is oriented substantially vertically.
Eine im Wesentlichen vertikale Ausrichtung der Antriebswelle bedeutet vorzugsweise, dass die Antriebswelle mit einer Abweichung von weniger als 30°, 20°, 10°, 5° oder 2° zu einer vertikalen Ebene oder vertikalen Gerade ausgerichtet ist.A substantially vertical orientation of the drive shaft preferably means that the drive shaft is aligned with a deviation of less than 30 °, 20 °, 10 °, 5 ° or 2 ° to a vertical plane or vertical straight line.
Zweckmäßig ist der flüssigkeitsdichte Schirm an einem radialen Endabschnitt als ein Ring ausgebildet und das Gefälle des Ringes ist oberseitig kleiner als das Gefälle des Schirmes innerhalb des Ringes oberseitig, insbesondere als das Gefälle des Schirmes oberseitig innerhalb des Ringes in einem radialen Abstand von weniger als der Hälfte des Radius des Schirmes. Der Ring weist somit auch an der Oberseite ein geringes Gefälle auf, so dass Wasser, welches aus dem Schirm im Bereich innerhalb des Ringes zu dem Ring strömt, auch am Ring radial nach außen abströmen kann.Suitably, the liquid-tight screen is formed at a radial end portion as a ring and the slope of the ring is upper side smaller than the slope of the screen within the ring on the upper side, in particular as the slope of the screen on the upper side within the ring at a radial distance of less than half the radius of the screen. The ring thus also has a slight downward gradient on the upper side, so that water which flows out of the screen in the area inside the ring to the ring can also flow out radially on the ring to the outside.
In einer weiteren Ausführungsform ist der flüssigkeitsdichte Schirm an einem radialen Endabschnitt als ein Ring ausgebildet und das Gefälle des Ringes unterseitig ist kleiner als das Gefälle des Schirmes innerhalb des Ringes unterseitig, insbesondere als das Gefälle des Schirmes untenseitig innerhalb des Ringes in einem radialen Abstand von weniger als der Hälfte des Radius des Schirmes.In another embodiment, the liquid-tight screen is formed at a radial end portion as a ring and the slope of the ring underside is smaller than the slope of the screen within the ring below, especially as the slope of the screen below the inside of the ring at a radial distance of less as half the radius of the screen.
insbesondere sind der flussigkeitsdichte Schirm, insbesondere der Ring. und/oder die Schaufeln unterseitig in einem radialen Endbereich mit einer ringförmigen Tropfnase versehen. An der ringförmigen Tropfnase kann das von der Oberseite des Ringes zu der Unterseite des Ringes strömende Wasser abtropfen, so dass dieses Wasser gezielt an der Tropfnase unterhalb des Laufrades nach unten abtropft. Damit soll ein gezieltes und kontrolliertes Ableiten des Wassers ermöglicht werden.In particular, the liquid-tight screen, in particular the ring. and / or the blades are provided on the underside in a radial end region with an annular drip nose. At the annular drip nose, the water flowing from the top of the ring to the bottom of the ring dripping, so that this water drips down selectively at the drip tip below the impeller. This should allow a targeted and controlled discharge of the water.
In einer weiteren Ausgestaltung ist die Antriebswelle an einer Fixierungsöffnung in der Nabe befestigtIn a further embodiment, the drive shaft is fastened to a fixing opening in the hub
In einer weiteren Ausgestaltung ist die Fixierungsöffnung als eine die Nabe vollständig durchstoßende Bohrung ausgebildet und die Antriebswelle bezüglich der Nabe ist an der Bohrung flüssigkeitsdicht abgedichtet oder die Fixierungsöffnung ist als eine lediglich nach unten ausgebildete Bohrung ausgebildet und oberhalb der Fixierungsöffnung ist der flüssigkeitsdichte Schirm der Nabe fortgesetzt und/oder das Laufrad ist einteilig, insbesondere aus Kunststoff, ausgebildet. Die Nabe bzw. der Schirm ist damit auch im Bereich der Fixierungsöffnung mit der darin angeordneten Antriebswelle flüssigkeitsdicht ausgebildet.In a further embodiment, the fixation opening is formed as a bore completely piercing the hub and the drive shaft with respect to the hub is sealed liquid-tight at the bore or the fixation opening is formed as a downwardly formed bore and above the fixation opening of the liquid-tight screen of the hub is continued and / or the impeller is integrally formed, in particular made of plastic. The hub or the screen is thus formed liquid-tight in the region of the fixing opening with the drive shaft arranged therein.
In einer ergänzenden Variante ist der Elektromotor mit einem den Elektromotor wenigstens teilweise, insbesondere vollständig, umschließenden Motorhaltet an dem Gehäuse befestigt und/oder der Elektromotor ist ein elektrisch kommutierter, bürstenloser Motor.In a supplementary variant, the electric motor is fastened to the housing by means of a motor holder which encloses the electric motor at least partially, in particular completely, and / or the electric motor is an electrically commutated, brushless motor.
In einer weiteren Variante weist der Motorhalter in radialer Richtung nach außen oberseitig und/oder unterseitig ein, insbesondere stetiges, Gefälle auf. Damit kann auf dem Motorhalter auftreffendes Wasser radial nach außen abgeleitet werden, so dass zu dem radial innerhalb des Motorhalters angeordneten Elektromotor kein Wasser gelangen kann.In a further variant, the motor holder in the radial direction outwards on the top and / or bottom side, in particular continuous slope on. Thus, impinging water on the motor holder can be discharged radially outward, so that no water can reach the electric motor arranged radially inside the motor holder.
In einer weiteren Ausgestaltung ist das Gefälle des Motorhalters in einem Ringabschnitt unterhalb des flüssigkeitsdichten Schirmes ausgebildet und vorzugsweise zusätzlich radial außerhalb des Ringabschnittes.In a further embodiment, the gradient of the motor holder is formed in a ring portion below the liquid-tight screen and preferably additionally radially outside of the ring portion.
Insbesondere ist in dem Ringabschnitt und vorzugsweise außerhalb des Ringabschnittes wenigstens eine ringförmige Stufe ausgebildet.In particular, at least one annular step is formed in the ring portion and preferably outside the ring portion.
In einer weiteren Ausgestaltung sind innerhalb des Gehäuses der Kraftfahrzeugklimaanlage der Kältemittelverdampfer und die, vorzugsweise elektrische, Heizeinrichtung angeordnet.In a further embodiment, the refrigerant evaporator and the, preferably electrical, heating device are arranged within the housing of the motor vehicle air conditioning system.
In einer weiteren Ausgestaltung weist die Kraftfahrzeugklimaanlage wenigstens einen Kanal zum Durchleiten von Luft auf.In a further embodiment, the motor vehicle air conditioning system has at least one channel for passing air through.
Zweckmäßig umfasst die Kraftfahrzeugklimaanlage weinigstens einen Luftfilter.The motor vehicle air conditioning system expediently comprises at least one air filter.
In einer Variante sind der Kältemittelverdampfer und/oder die, vorzugsweise elektrische, Heizeinrichtung und/oder der wenigstens eine Luftfilter innerhalb des wenigstens einen Kanales angeordnet.In a variant, the refrigerant evaporator and / or the, preferably electrical, heating device and / or the at least one air filter are arranged within the at least one channel.
In einer weiteren Ausführungsform ist der wenigstens eine Luftfilter in Strömungsrichtung der Luft vor dem Gebläse als saugseitiger Luftfilter angeordnet und/oder in Strömungsrichtung der Luft nach dem Gebläse als druckseitiger Luftfilter.In a further embodiment, the at least one air filter in the flow direction of the air upstream of the fan is arranged as a suction-side air filter and / or in the flow direction of the air downstream of the fan as a pressure-side air filter.
In einer ergänzenden Ausgestaltung weist die Kraftfahrzeugklimaanlage wenigstens eine Luftleiteinrichtung, z, B. wenigstens eine Luftklappe und/oder wenigstens einen Schirm und/oder wenigstens ein Rollband, auf, mittels der oder denen die durch den wenigstens einen Kanal leitbare Luftmenge steuerbar ist.In a supplementary embodiment, the motor vehicle air conditioning system has at least one air guiding device, eg, at least one air flap and / or at least one screen and / or at least one conveyor belt, by means of which or to which the air quantity controllable by the at least one channel can be controlled.
Insbesondere besteht das Gehäuse der Kraftfahrzeugklimaanlage wenigstens teilweise aus Kunststoff.In particular, the housing of the motor vehicle air conditioning at least partially made of plastic.
Zweckmäßig ist der wenigstens eine Kanal zum Durchleiten von Luft von einer Wandung des Gehäuses begrenzt.Suitably, the at least one channel for the passage of air from a wall of the housing is limited.
Im Nachfolgenden wird ein Ausführungsbeispiel der Erfindung unter Bezugnahme auf die beigefügten Zeichnungen näher beschrieben. Es zeigt:
- Fig. 1
- einen Querschnitt eines Gebläses einer Kraftfahrzeugklimaanlage,
- Fig. 2
- eine Bodenansicht des Laufrades des Gebläses gemäß
Fig. 1 und - Fig. 3
- eine Seitenansicht des Laufrades des Gebläses gemäß
Fig. 1 .
- Fig. 1
- a cross section of a blower of an automotive air conditioning system,
- Fig. 2
- a bottom view of the impeller of the blower according to
Fig. 1 and - Fig. 3
- a side view of the impeller of the blower according to
Fig. 1 ,
Eine Kraftfahrzeugklimaanlage mit einem Gehäuse 2 dient zum Kühlen und/oder zum Erwärmen von einem Innenraum eines nicht dargestellten Kraftfahrzeuges zuzuführender Luft. Innerhalb des Gehäuses 2 der Kraftfahrzeugklimaanlage ist ein Kältemittelverdampfer zum Kühlen der dem Fahrzeuginnenraum zuzuführende Luft und eine Heizeinrichtung zum Erwärmen der dem Fahrzeuginnenraum zuzuführenden Luft angeordnet. Der Kältemittelverdampfer und die Heizeinrichtung sind dabei innerhalb eines von dem Gehäuse 2 eingeschlossenen bzw. begrenzten Kanales angeordnet.An automotive air conditioning system with a housing 2 is used for cooling and / or heating of an interior of a motor vehicle, not shown, air to be supplied. Within the housing 2 of the motor vehicle air conditioning system, a refrigerant evaporator for cooling the air to be supplied to the vehicle interior, and a heater for heating the air to be supplied to the vehicle interior are arranged. The refrigerant evaporator and the heater are arranged within a trapped or bounded by the housing 2 channel.
Zum Umwälzen bzw. Fördern der Luft durch die Kraftfahrzeugklimaanlage ist diese ferner mit einem Gebläse 3 (
Die Nabe 8 des Laufrades 5 ist dabei als ein Schirm 10 in der Form eines Domes 11 ausgebildet. Eine Oberseite 12 als auch eine Unterseite 13 des Schirmes 10 weist dabei in radialer Richtung nach außen von der Achse 1 weg ein Gefälle auf. Damit wird auf die Oberseite 12 des Schirmes 10 bzw. der Nabe 8 auftreffendes Wasser radial nach außen zu einem Ring 14 an einem radialen Endabschnitt des Schirmes 10 geleitet. Die Schaufeln 9 durchstoßen dabei den Ring 14 geringfügig, so dass auch unterhalb des Ringes 14 ein kleiner Abschnitt der Schaufeln 9 vorhanden ist, welche eine Kühlflut 26 bilden (
Der Elektromotor 7 ist mittels eines ringartigen Motorhalters 19 aus Kunststoff und einer Nut-Feder-Verbindung 22 als lösbares Verbindungsmittel an dem Gebläsegehäuse 4 befestigt. Der Motorhalter 19 weist dabei in einer radialen Richtung mit zunehmender Entfernung von dem Elektromotor 7 ein Gefälle auf. Außerdem ist an dem Motorhalter 19 eine ringförmige Stufe 21 ausgebildet. Eine Oberseite 20 des Motorhalters 19 weist damit von dem Elektromotor 7 zu der Nut-Feder-Verbindung 22 ein Gefälle auf.The electric motor 7 is fixed by means of a ring-like motor holder 19 made of plastic and a tongue and
Von dem Gebläse 3 wird an der Ansaugöffnung 23 die angesaugte Luft im Wesentlichen in einer Richtung parallel zu der Achse 1 der Antriebswelle 6 nach unten angesaugt und anschließend von den Schaufeln 9 radial bezuglich der Achse 1 nach außen in den Strömungsraum 24 gefördert. An dem in
Dieses an der Oberseite 12 des Schirmes 10 abgeleitete Wasser tropft, insbesondere bei einem Stillstand des Laufrades 5, anschließend kontrolliert an der Tropfnase 15 auf die Oberseite 20 des Motorhalters 19. Aufgrund des Gefälles des Motorhalters 19 an der Oberseite 20 strömt dieses Wasser radial nach außen zu dem Gebläsegehäuse 4. In dem Gebläsegehäuse 4 ist eine nicht dargestellte Ablauföffnung für dieses Wasser angeordnet, so dass durch diese Ablauföffnung dieses gesammelte Wasser kontrolliert aus der Kraftfährzeugklimaanlage abgeleitet werden kann, Die Nabe 8 als der Schirm 10 schützt somit den Elektromotor 7 vor von oben in Richtung zu dem Elektromotor 7 geleiteten Wasser. Aufgrund des Gefälles des Motorhalters 19 an der Oberseite 20 kann dieses Wasser auch nicht zu dem Elektromotors 7 gelangten. An der Oberseite 20 des Motorhalters 19 befindliches Wasser wird aufgrund der Ausbildung der Stufe 21 auch nicht bei einer horizontalen Beschleunigung der Kraftfahrzeugklimaanlage, beispielsweise bei einer Kurvenfahrt, nicht zu dem Elektromotor 7 geleitet, weil derartiges Schwallwasser von der Stufe 21 abgehalten werden kann.This derived at the top 12 of the screen 10 drips water, especially at a standstill of the
Insgesamt betrachtet sind mit der erfindungsgemäßen Kraftfahrzeugklimaanlage, wesentliche Vorteile verbunden. Aufgrund der Ausbildung der Nabe 8 als Schirm 10 ist der Elektromotor 7 des Gebläses 3 vor Wasser geschützt, so dass dadurch Beschädigungen an dem Elektromotor 7 aufgrund von Wasser im Wesentlichen ausgeschlossen werden können. Ferner wird das Wasser innerhalb des Gebläses 3 kontrolliert abgeleitet, einerseits aufgrund des Gefälles an der Oberseite 12 des Schirmes 8 als auch aufgrund des Gefälles an der Oberseite 20 des Motorhalters 19, so dass dadurch ein Aufbauen von Eisbrucken zwischen dem Laufrad 5 und dem Gebläsegehäuse 4 bzw. dem Motorhalter 19 bei Temperaturen unterhalb von 0°C im Winter im Wesentlichen ausgeschlossen werden kann.Overall, significant advantages are associated with the automotive air conditioning system according to the invention. Due to the design of the hub 8 as a screen 10, the electric motor 7 of the fan 3 is protected from water, so that thereby damage to the electric motor 7 due to water can be substantially excluded. Furthermore, the Discharged water within the fan 3 controlled, on the one hand due to the slope of the top 12 of the screen 8 and due to the slope at the top 20 of the motor holder 19, thereby building a Eisbrucken between the
- 1 Achse der Antriebswelle1 axis of the drive shaft
- 2 Gehäuse2 housings
- 3 Gebläse3 blowers
- 4 Gebläsegehäuse4 blower housing
- 5 Laufrad5 impeller
- 6 Antriebswelle6 drive shaft
- 7 Elektromotor7 electric motor
- 8 Nabe8 hub
- 9 Schaufeln9 shovels
- 10 Schirm10 screen
- 11 Dom11 Dom
- 12 Oberseite des Schirmes12 top of the screen
- 13 Unterseite des Schirmes13 bottom of the screen
- 14 Ring an radialen Endabschnitt des Schirmes14 ring at the radial end portion of the screen
- 15 Ringförmige Tropfnase15 Annular drip nose
- 16 Fixierungsöffnung16 fixation opening
- 17 Bohrung17 hole
- 18 Oberer Stabilisierungsring18 Upper stabilizing ring
- 19 Motorhalter19 engine mounts
- 20 Oberseite des Motorhalters20 top of the motor holder
- 21 Stufe21st step
- 22 Nut-Feder-Verbindung22 tongue and groove connection
- 23 Ansaugöffnung23 suction opening
- 24 Strömungsraum24 flow space
- 25 Projektionsabschnitt25 projection section
- 26 Kühlflut26 cooling tide
Claims (14)
- A vehicle air-conditioning system, comprising- a housing (2),- a fan (3) with an impeller (5), a drive shaft (6) and an electric motor (7), wherein the impeller (5) has a hub (8) and blades (9) for circulating the air and the electric motor (7) is arranged below the impeller (5),- a refrigerant evaporator for cooling air to be introduced into a vehicle interior space,- a heater for heating the air to be introduced into the vehicle interior space,
characterised in that
the impeller (5) is provided with a fluid-tight closed shield (10) for shielding water from the electric motor (7),
wherein the hub (8) is formed as the fluid-tight closed shield (10) and the hub (8) is formed as the fluid-tight closed shield (10) on a projection section (25) of the electric motor (7) on the hub (8) parallel to an axis (1) of the drive shaft (6) and the hub (8) is additionally formed as the fluid-tight closed shield (10) in a radial distance to the projection section (25) of less than 5 cm, 2 cm or 1 cm. - The vehicle air-conditioning system according to claim 1, characterised in that the shield (10) is formed as a disc or a dome (11).
- The vehicle air-conditioning system according to one or more of the preceding claims, characterised in that the shield (10) formed as a dome (11) has, in the radial direction, an in particular steady slope to the outside on the upper side.
- The vehicle air-conditioning system according to one or more of the preceding claims, characterised in that the shield (10) formed as a dome (11) has, in the radial direction, an in particular steady slope to the outside on the lower side.
- The vehicle air-conditioning system according to one or more of the preceding claims, characterised in that the drive shaft (6) is substantially arranged in a vertical way.
- The vehicle air-conditioning system according to claim 4 or 5, characterised in that the fluid-tight shield (10) is formed as a ring (14) on a radial end section and the slope of the ring (14) is smaller on the upper side than the slope of the shield (10) on the upper side inside the ring (14).
- The vehicle air-conditioning system according to one or more of claims 4 to 6, characterised in that the fluid-tight shield (10) is formed as a ring (14) on a radial end section and the slope of the ring (14) is smaller on the lower side than the slope of the shield (10) on the lower side inside the ring (14).
- The vehicle air-conditioning system according to one or more of the preceding claims, characterised in that the fluid-tight shield (10), in particular the ring (14), is provided with a ring-shaped drip lug (15) in a radial end region on the lower side.
- The vehicle air-conditioning system according to one or more of the preceding claims, characterised in that the drive shaft (6) is fixed to a fixation opening (16) inside the hub (8).
- The vehicle air-conditioning system according to claim 9, characterised in that the fixation opening (16) is formed as a bore which completely protrudes the hub (8) and the drive shaft (6) is sealed in a fluid-tight manner on the bore with regard to the hub (8) or the fixation opening (16) is formed as a bore which is only formed downwards and above the fixation opening (16), the fluid-tight shield (10) of the hub (8) is continued and/or the impeller (5) is integrally formed, in particular from plastic.
- The vehicle air-conditioning system according to one or more of the preceding claims, characterised in that the electric motor (7) is fixed to the housing (2) with a motor bracket (19) which surrounds the electric motor (7) at least partially, in particular completely and/or the electric motor (7) is a BLDC electric motor.
- The vehicle air-conditioning system according to claim 11, characterised in that the motor bracket (19) has, in the radial direction, an in particular steady slope to the outside on the upper side and/or lower side.
- The vehicle air-conditioning system according to claim 12, characterised in that the slope of the motor bracket (19) is formed in a ring section below the fluid-tight shield and preferably also radially outside the ring section.
- The vehicle air-conditioning system according to claim 12 or 13, characterised in that at least one ring-shaped step (21) is formed in the ring section and preferably outside the ring section.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102010028067A DE102010028067A1 (en) | 2010-04-22 | 2010-04-22 | Air conditioning system for cooling or warming air that is supplied to inner compartment of motor vehicle, has heating device warming air that is supplied to compartment, and running wheel provided with shield to shield water from motor |
DE102010020731 | 2010-05-17 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP2381110A2 EP2381110A2 (en) | 2011-10-26 |
EP2381110A3 EP2381110A3 (en) | 2013-01-23 |
EP2381110B1 true EP2381110B1 (en) | 2018-03-28 |
Family
ID=44201958
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP11162589.3A Not-in-force EP2381110B1 (en) | 2010-04-22 | 2011-04-15 | Motor vehicle air conditioning |
Country Status (1)
Country | Link |
---|---|
EP (1) | EP2381110B1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6441402B2 (en) * | 2017-03-30 | 2018-12-19 | 株式会社ケーヒン | Centrifugal blower |
JP7036644B2 (en) * | 2018-03-27 | 2022-03-15 | 株式会社日本クライメイトシステムズ | Blower for vehicle air conditioning |
CN114285207A (en) * | 2021-12-31 | 2022-04-05 | 珠海格力电器股份有限公司 | Motor protection architecture and air-out device |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5449153A (en) * | 1993-12-13 | 1995-09-12 | Cadillac Rubber & Plastics, Inc. | Isolation mounting plate for blower motor |
US5786647A (en) * | 1993-03-04 | 1998-07-28 | Robert Bosch Gmbh | Device for incorporating a motor |
DE19802111A1 (en) * | 1997-01-31 | 1998-08-06 | Denso Corp | Centrifugal fan for air conditioning unit |
US5813831A (en) * | 1996-03-11 | 1998-09-29 | Denso Corporation | Centrifugal blower having a bell-mouth ring for reducing noise |
US20060285967A1 (en) * | 2005-06-17 | 2006-12-21 | Halla Climate Control Corporation | Blower for air conditioner of automotive vehicles |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2801941B1 (en) | 1999-12-06 | 2002-02-08 | Valeo Climatisation | HEATING-AIR CONDITIONING SYSTEM COMPRISING AT LEAST ONE CENTRIFUGAL PULSE |
JP4491909B2 (en) * | 2000-04-28 | 2010-06-30 | 株式会社デンソー | Centrifugal blower |
JP3790719B2 (en) * | 2002-05-15 | 2006-06-28 | 株式会社ケーヒン | Centrifugal blower |
JP5000851B2 (en) * | 2005-02-16 | 2012-08-15 | プライムアースEvエナジー株式会社 | Fan structure and battery pack |
TWI280322B (en) * | 2005-12-23 | 2007-05-01 | Delta Electronics Inc | Fan and motor thereof |
JP4867847B2 (en) * | 2007-08-10 | 2012-02-01 | 株式会社デンソー | Electric fan device |
-
2011
- 2011-04-15 EP EP11162589.3A patent/EP2381110B1/en not_active Not-in-force
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5786647A (en) * | 1993-03-04 | 1998-07-28 | Robert Bosch Gmbh | Device for incorporating a motor |
US5449153A (en) * | 1993-12-13 | 1995-09-12 | Cadillac Rubber & Plastics, Inc. | Isolation mounting plate for blower motor |
US5813831A (en) * | 1996-03-11 | 1998-09-29 | Denso Corporation | Centrifugal blower having a bell-mouth ring for reducing noise |
DE19802111A1 (en) * | 1997-01-31 | 1998-08-06 | Denso Corp | Centrifugal fan for air conditioning unit |
US20060285967A1 (en) * | 2005-06-17 | 2006-12-21 | Halla Climate Control Corporation | Blower for air conditioner of automotive vehicles |
Also Published As
Publication number | Publication date |
---|---|
EP2381110A2 (en) | 2011-10-26 |
EP2381110A3 (en) | 2013-01-23 |
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