EP1989416A1

EP1989416A1 - Fan drive device

Info

Publication number: EP1989416A1
Application number: EP07703404A
Authority: EP
Inventors: Gerold Schultheiss; Rudolf Stoklossa; Roman Woiterski
Original assignee: Behr GmbH and Co KG
Current assignee: Mahle Behr GmbH and Co KG
Priority date: 2006-02-22
Filing date: 2007-02-12
Publication date: 2008-11-12
Also published as: WO2007096071A1; CN101389837B; JP5500825B2; US8636127B2; DE102006008576A1; JP2009527681A; CN101389837A; US20090064946A1

Abstract

The invention relates to a fan drive device (1) for driving at least one fan impeller (2), comprising at least one first drivable coolable housing element (9, 10) with at least one output disc (13) which can be connected to the at least one drivable coolable housing element (9, 10) in such a way as to be capable of transmitting torque by fluid friction, wherein at least one fluid can be admitted to at least one torque-transmitting space, and the mass flow of said fluid can be regulated by means of a valve element (30), wherein the valve element (30) can be actuated by at least one actuator (26, 27), and at least a section of the actuator (26, 27) is arranged in at least one retaining element (33) for fastening to a motor unit.

Description

Fan drive device

The present invention relates to a fan drive device for driving at least one fan wheel according to the preamble of claim 1.

Fans are known for cooling heat exchangers such as coolant coolers, charge air coolers, oil coolers, air conditioner condensers, air conditioning gas coolers, etc. These fans are driven by means of at least one electric drive unit and / or by means of at least one fluid friction clutch.

The fans are used in particular for engine cooling of motor vehicles with internal combustion engines. They are often arranged on a separate journal on the engine front wall. Most of the fans are driven by a belt drive or are drivable.

Coupling devices are known which enable engagement and disengagement according to the principle of dry friction. These coupling devices can be actuated pneumatically or electromagnetically. These coupling devices usually have a pulley, with the the belt drive is drivable. The storage of the driven pulley usually has a non-rotating bearing pin. Furthermore, the coupling device usually comprises pneumatic or electromagnetic actuators. In most cases, during assembly, the coupling device is first attached to a motor end wall without a fan, in particular a fan wheel, and connected to the belt drive. Subsequently, the fan, in particular the fan, mounted.

This assembly sequence is particularly advantageous in coupling devices on which a large weight acts.

The known coupling devices have no continuous control of the output speed. The fan is either directly entrained directly or he remains on the residual drag torque storage in a very low idle speed. Requirements such as higher fan power, lower noise and better energy utilization are not possible with the fans described.

If, therefore, the low idle speed during operation should not be sufficient, the maximum activation of the fan occurs. This consumes a lot of energy and leads to a noise, which affects the ride comfort of a vehicle occupant.

Furthermore, continuously regulating fan drive devices are known according to the principle of fluid friction. Before assembly, these fan drive devices are connected to the fan. The vehicle usually has a storage unit which is in particular preassembled on the engine front wall. On the bearing unit usually a pulley is arranged, which is driven by a belt. During vehicle assembly, a rotating hub is then pushed onto a preassembled unit, which usually consists of fan and fan drive device. by virtue of The high weight, which acts on the elements to be mounted, the assembly is usually very tiring. In fan drive devices which operate on the principle of fluid friction, the drive device is controlled directly via the temperature, for example via a bimetal. For this purpose, the bimetallic actuator is usually arranged on the rotating end face of the drive device, since for this purpose the temperature of the exiting from the vehicle radiator cooling air is used as a control variable.

In addition to the control of fluid friction clutches by means of bimetal electromagnetically controllable fluid friction clutches are known. In this case, a non-rotating magnetic coil is used. This non-rotating solenoid requires an additional bearing compared to a bi-metal driven fluid friction clutch. Furthermore, a support of the electrical connection in the area of rotating components is required.

Fan drive devices that operate on the liquid friction principle have a slip performance that generates heat. The heat leads to heating of the coupling components. The generated slip power is proportional to the transmitted torque and proportional to the difference between input speed and output speed. The fan drive device, in particular the fluid friction clutch, has components that must not exceed a certain temperature. These components are for example bearings, in particular rolling bearings. To dissipate the heat generated from the clutch, the housing of the clutch is usually provided with cooling fins, which should improve the heat transfer to the surrounding air. These cooling fins are usually arranged radially on the rotating clutch housing. - A -

Fan drive devices are known in which the clutch housing of a fluid friction clutch rotates with the speed of the fan, in particular of the fan wheel. The speed of the fan, in particular the fan wheel is smaller than the drive speed. When the clutch housing is rotated, forced convection occurs due to the centrifugal force, which increases with the square of the speed of the clutch housing. With a low degree of connection of the fan, d. H. At low output speed, the cooling of the clutch housing is relatively low. With addition levels of 30% to 70%, a lot of heat is generated. The largest deficit in the heat balance is usually in the range of 30% to 40% connection of the fan, since the dissipated heat output is the lowest.

From DE 103 38 432 A1 a fluid friction clutch, in particular for a motor vehicle ventilator, is known. In the decoupled state of the input and output body, the liquid friction clutch has a reservoir in the drive body, which largely absorbs the hydraulic fluid. When the clutch is activated, the hydraulic fluid enters the clutch area from the reservoir. Due to the hydraulic fluid, the gap between the input and output body in the clutch area is at least partially closed and a torque transmitted. The output body has concentric projections. Furthermore, the coupling device from DE 103 38 432 A1 has a controllable device for closing and opening flow paths. In a first position, the device opens the flow path for the inflow of the hydraulic fluid into the clutch area and closes the return flow. In a second position, the device closes the inflow and opens the reflux. The torque device essentially has a force-lockingly connected to the control shaft armature, a non-positively connected to the drive shaft flux U-guide ring and a rotatably mounted in the housing coil. If the coil is energized, a current-dependent arises between the armature and the flux guide Torque and the control shaft is rotated relative to the drive shaft. The electromagnetically controlled torque and control device consists of a rotationally fixed, fixed on a roller bearing on the drive shaft, coil part and rotating with the output shaft adjusting elements.

From DE 103 24 314 A1 a fan drive for motor vehicles is known. In this case, a fluid friction clutch is arranged on an auxiliary unit. As a result, the fluid friction clutch is better cooled because it runs at a higher speed and is better acted upon by cooling air than if it were integrated into the fan hub. DE 103 24 314 A1 discloses a fan drive with a belt pulley. The driven pulley is non-rotatably connected by screws to the housing or a housing cover and rotatably supported by a bearing on the drive shaft. Thus, the drive from the belt drive directly to the housing, d. H. the output side of the clutch. The pulley drives a drive shaft via a freewheel and thus the housing including fan on. If the belt drive is switched on via the clutch, the speed of the pulley is greater than that of the drive shaft, whereby the housing is taken directly from the pulley and the drive shaft is overrun as a result of the freewheel. There is no more drive from the flange shaft. The fan thus runs at increased speed. Furthermore, DE 103 24 314 A1 discloses a fluid friction clutch, which itself also runs at increased speed and is better cooled on the front side, as a result of which it can dissipate a higher loss or slip performance.

DE 10 2004 009 073 A1 discloses a controllable drive for a water pump in a motor vehicle. The controllable drive has a rotatably mounted shaft on which at least one rotatably mounted output body and at least one rotatably mounted drive body are arranged. Between the drive body and the output body, a coupling region is arranged, which can receive a viscous fluid. The controllable drive has at least one first and at least one second flow path, which connects a fluid reservoir with the coupling region between the drive and driven body. The controllable drive furthermore has a device, which can be changed in its position with at least one actuator, which device changes at least one passage opening of at least one flow path of the drive. The actuation of the valves takes place with the at least one actuator. The at least one actuator is arranged outside the rotating coupling. The valves are magnetically controllable. These are, in particular, seat valves. The magnetically controllable device has at least one axially movable armature on which a magnetic actuating force acts. On the shaft of the drive and / or the coolant pump, a pulse generator is provided for determining the speed.

It is an object of the present invention to improve a fan drive device of the type mentioned.

The object is solved by the features of claim 1.

A fan drive device is proposed for driving at least one fan wheel, which proposes at least one first drivable coolable housing element, at least one driven pulley, which is connectable to the at least one drivable coolable housing element in a fluid-transferring manner, wherein at least one torque transmission chamber can be swept with at least one fluid, the mass flow of which can be regulated by means of a valve element, wherein the valve element can be actuated with at least one actuator, wherein the actuator is arranged at least in sections in at least one holding element for attachment to a motor unit. The at least one first housing element is drivable or can be driven or is driven. Furthermore, the at least one housing element can be cooled or can be cooled or is cooled. The at least one drive disk can be connected to the at least one drivable coolable housing element in a fluid-transmitting, torque-transferable manner or can be connected or is connected.

Under fluidreibend torque transferable is to be understood that due to frictional forces acting between particles of a fluid, at least one torque between the at least one first housing member and the at least one driven pulley is transferable or can be transmitted or transmitted.

At least one torque transmission space can be flowed through with at least one fluid or can be flowed through with at least one fluid or is flowed through with at least one fluid.

Under torque transmission space is to be understood in particular a space which is formed in at least a first housing member. In this space, the transmission of the torque from the at least one first drivable coolable housing element to the at least one driven pulley, in particular fluid driving, can take place.

The mass flow of the fluid, in particular of the viscous fluid, can be regulated by means of a valve element or can be regulated by means of a valve element or is regulated by means of a valve element. The valve element can be actuated with at least one actuator or can be actuated or actuated. An actuator is to be understood in particular as meaning a coil, in particular a magnet coil. The actuator, in particular the coil, is arranged at least in sections in at least one holding element for attachment to a motor unit.

In this case, the actuator can be arranged as a whole or only partially or partially in the at least one retaining element.

A holding element can in particular be understood as meaning a flange which can serve for fastening to a motor unit. In this case, the at least one retaining element, in particular the flange, at least one bore or at least one channel or at least have an opening in which the actuator can be arranged.

Furthermore, a fan drive device according to the preamble of claim 1 is proposed, wherein at least one sensor is arranged at least in sections in the at least one holding element for attachment to a motor unit.

The sensor can be a speed sensor, which can measure, for example, an output or input speed. Furthermore, the sensor may be for temperature measurement. The sensor is at least partially arranged in the at least one holding element. Under the support member may be understood in particular a flange for attachment to a motor unit. The sensor can be arranged completely or only partially or partially in the holding element. The holding element can have an opening, at least one bore or at least one channel, in which the sensor can be arranged.

Furthermore, a fan drive device according to the preamble of claim 1 is proposed, wherein the actuator is mounted on the holding element. is arranged and the at least one sensor is arranged at least partially in the at least one holding element.

The actuator may in particular be a coil, in particular a Magnetspu- Ie _1, which can be arranged on the support member and / or may be in sections, or to the holding element at least at least partially mounted on the support member. Under the holding element can be understood in particular a flange. At least one sensor can be arranged completely or at least partially or partially in the at least one holding element. The sensor may be a sensor for speed measurement and / or may be a sensor for measuring temperature.

Further, a fan drive device according to the preamble of claim 1 is proposed, wherein the actuator is arranged on a coolant pump and at least one hub and a pulley are formed magnetic flux conducting.

The actuator may be a coil, in particular a magnetic coil, which is arranged on a coolant pump. The coolant pump can serve for pumping coolant, in particular a coolant, in particular cooling water, a coolant cooler.

A hub is to be understood in particular as a bore-shaped recess of a component which can or can be connected to a shaft. At least one hub and a pulley are formed magnetflusslei- tens.

Under magnetic flux is to be understood that the at least one hub and the at least one pulley are formed of a material which conducts the magnetic flux. In an advantageous embodiment, the actuator is a magnetic coil. The magnetic coil is particularly advantageous because it is inexpensive and easy to control.

In an advantageous development, the at least first housing element can be driven by means of at least one pulley. In particular, the at least one pulley can drive or drive the at least first housing element. Particularly advantageously, the housing element can be driven at a high drive speed, wherein the at least first housing element can be cooled particularly advantageously.

In a preferred embodiment, the torque transmission chamber can be flowed through by a viscous fluid through at least one bore or can be flowed through by at least one bore or is flowed through at least one bore. In particular, the viscous fluid can flow through the at least one bore in the torque transmission space. In this way, different torques can be transferred from the at least one housing element to the at least one drive disk in a particularly advantageous manner.

Furthermore, it can be particularly preferably provided that the holding element is a flange which is arranged rotationally fixed. The holding element can be arranged or attached particularly advantageously to a motor unit.

Furthermore, it can be provided that the first housing element and / or at least one second housing element have first concentric labyrinth-shaped recesses and the driven disc has second concentric labyrinth-shaped recesses corresponding thereto. In this way, particularly advantageously at least one torque, in particular different torques, can be transmitted from the first housing element and / or the second housing element to the output disk by means of fluid friction forces.

In a further advantageous embodiment, the fluid can flow through the first and second recesses at least in sections, whereby in particular at least one torque of the housing element can be transmitted to the driven pulley. In this way, particularly advantageously at least one torque, in particular different torques, can be transmitted from the housing element to the driven pulley.

In an advantageous embodiment, at least one nub element for accumulating the viscous fluid is formed from the driven pulley. The viscous fluid can be derived from the torque transmission space in a particularly advantageous manner.

In an advantageous development, the fan drive device has at least one storage space for storing the viscous fluid. In this way, a different speed of the driven pulley can be generated particularly advantageous in the viscous fluid can be supplied to the torque transmission space.

Furthermore, it can be provided that the at least one storage space rotates with at least one drive speed of the belt pulley.

In this way, the storage space, which may be formed in particular in the interior of the at least one housing element, be cooled particularly advantageous. In an advantageous development, the valve element has a valve lever with which at least one flow channel opening of a first flow channel can be closed or closed. In this way, the mass flow of the viscous fluid with which the torque transmission space can be flowed can be regulated particularly advantageously.

Furthermore, it can be provided that the valve lever with the at least one housing element, in particular elastic, is connectable. Particularly advantageously, the valve lever is connected to the housing element.

In an advantageous embodiment, the valve lever is pivotable about an attachment point or can be pivoted about an attachment point. In this way, the valve lever is particularly advantageous drivable.

In an advantageous development, the fan drive device has at least one soft-magnetic guide element. Particularly advantageously, a magnetic flux can be conducted through the at least one soft-magnetic guide element.

In an advantageous embodiment, at least one transmitter element for output speed measurement on a fan flange, in particular centrally, can be arranged or can be arranged or. In this way, the output speed of the fan flange threshold can be measured particularly easily, for example by means of a sensor.

In an advantageous embodiment, the sensor is for output speed measurement and / or a Hall sensor. In this way, the output speed of the driven pulley or the Lüfterflanschwelle is particularly simple and inexpensive to measure. Furthermore, it may be particularly preferred that at least a first cable for powering the actuator and / or a second cable for powering the sensor in the holding element can be arranged or arranged. In this way, the actuator and / or the sensor are particularly advantageous supplied with power.

In an advantageous development, the first housing element and / or the second housing element have cooling ribs. In this way, the fan drive device is particularly advantageous coolable and suitable for higher fan drive performance.

Furthermore, it can be provided that the at least one fan impeller has at least one flow guide element for cooling the housing element. In this way, the housing element can be particularly advantageous even better cooled, which even higher fan drive performance can be achieved.

In a further advantageous embodiment, the fan wheel has at least one opening for air flow and for cooling the housing element. In this way, the housing element is particularly advantageous coolable and higher fan drive performance can be achieved particularly advantageous.

Furthermore, it can be particularly preferably provided that at least one flange plate of the fan wheel has the at least one opening for air flow and for cooling the housing element. In this way, the housing element is particularly advantageous coolable and higher fan drive performance can be achieved. In a development, at least one flange plate of the fan wheel has the at least one opening for the flow of air through it and for cooling the housing element. In this way, the housing element can be cooled particularly advantageous.

Furthermore, it can be provided that at least one flange plate of the fan wheel has the at least one opening for the flow of air and for cooling the housing element. In this way, the at least one housing element can be cooled particularly advantageously.

In a further advantageous embodiment, the at least one flange plate is at least partially formed as a flow guide for cooling the housing member. In this way, the flow guide is particularly easy to produce.

Furthermore, it can be particularly preferably provided that the at least one flange plate is formed at least in sections as a radial fan for cooling the housing member. In this way, the housing element can be cooled particularly advantageous.

In a further development, the at least one opening is designed as a scoop for cooling the housing element. As a scoop is to be understood in particular a kind of inlet channel with an inlet opening or a kind of inlet diffuser. In this way, the housing element is particularly advantageous coolable.

A further advantageous embodiment is characterized in that the pulley has at least one pulley opening for cooling the housing element. In this way, the at least one housing element can be cooled particularly advantageously. Further, it can be particularly preferably provided that the pulley with the first housing member and / or the second housing member is positively, in particular by screwing, connectable. In this way, the housing element can be driven by the pulley particularly advantageous.

Furthermore, it can be provided that the driven pulley has at least one driven pulley opening for cooling at least one hub portion of the driven pulley. In this way, the at least one hub section of the drive disk can be cooled particularly advantageously.

In a further development, the fan drive device has at least one bearing for mounting the first and / or second housing element and / or the pulley. In this way, the first and / or second housing element and / or the belt pulley can be stored particularly advantageously.

Furthermore, it can be provided that at least one bearing seat portion of a fan shaft has at least one, in particular circumferential, recess for cooling the driven pulley. In this way, the at least one bearing is particularly advantageous coolable.

Furthermore, it can be particularly preferably provided that at least one bearing bush, in particular made of a poorly heat-conductive material, for cooling the driven pulley can be arranged on the at least one bearing seat portion of the fan shaft or is arranged or can be arranged. In this way, the at least one bearing is particularly advantageous coolable.

In a further advantageous embodiment, the driven pulley is connected to the at least one fan. In this way, the fan is particularly advantageous driven. Furthermore, it can be provided that the first drivable housing element and / or the at least second drivable housing element are rotatably mounted with respect to the retaining element.

Furthermore, it can be particularly preferably provided that the first drivable housing element and / or the at least second drivable housing element are rotatably mounted with respect to the drive pulley.

In a further advantageous embodiment, the driven pulley is rotatably mounted with respect to the retaining element.

In an advantageous development, at least one pulley unit can be dismantled by a fluid flow control unit for maintenance and / or repair purposes, or it can be disassembled or dismantled for maintenance and / or repair purposes and / or with the fluid flow control unit, in particular after maintenance and repair / or repair work, is mounted mountable or can be reassembled with the fluid flow control unit.

Further advantageous embodiments of the invention will become apparent from the dependent claims and from the drawing.

Embodiments of the invention are illustrated in the drawings and are explained in more detail below, with a limitation of the invention is not intended to be done thereby. Show it

FIG. 1: a slip performance map,

FIG. 2 is a sectional view of the fan drive device; FIG. 3 shows a sectional illustration of a further embodiment of the fan drive unit,

FIG. 4 shows a sectional illustration of a further embodiment of the fan drive unit,

FIG. 5: an isometric representation of a fan wheel with at least one flow guide element,

FIG. 6 shows a detailed view A of the at least one flow-guiding element,

FIG. 7 shows a sectional illustration of a fan drive unit with which at least one water pump can be driven,

FIG. 10 shows a sectional illustration of a further embodiment of a fan drive unit with a bearing bush,

FIG. 11 shows a sectional view of a further embodiment of a fan drive unit with a circumferential recess in the bearing seat and

FIG. 12 shows a sectional view of a further embodiment of a fan drive unit with a pulley unit which can be mounted by a fluid flow control unit.

FIG. 1 shows a slip performance characteristic SLKF.

In the slip performance curve SLKF, the output speed ABD is plotted in revolutions per minute (rpm) over the drive speed ATD in revolutions per minute (rpm). In the illustrated embodiment are drive speeds ATD from 1,200 to 3,600 rpm and output speeds ABD from 0 to 2,800 rpm applied. Furthermore, slip performance curves SLK of different slip powers in kilowatts (kW) are plotted in the slip performance curve SLKF. In the illustrated embodiment, the slip performance curves are 0.75 kW; 1 kW; 1, 25 kW; 1, 5kW; 1, 75 kW; 2.25 kW; 2 kW; 2.5 kW; 3 kW; 3.5 kW; 4 kW; 4.5 kW; 5 kW; 5.5 kW; 6 kW; 6.5 kW; 7 kW; 7.5 kW; 8 kW and 10 kW registered. Intermediate values for these entered curves can be determined by interpolation. As an example, the slip performance curve for 8 kW is marked SLK 8.

The slip rates, which are plotted as slip performance curves SLK in the slip performance characteristic diagram SLKF, arise during operation of the fan drive device due to the fluid friction that not shown at least one drivable housing element transmits at least one torque to the driven pulley. The slip power generates heat to be dissipated from the fan drive device. If this heat is not dissipated from the fan drive device, unacceptably high component temperatures of the clutch, in particular of the viscous coupling, which lead or can lead to total failure of the fan drive unit arise.

The maximum achievable output speed MEABD in rpm above the drive speed ATD is shown as a curve. Likewise, by way of example, a limit line of the permissible slip power MZSL for steady-state operation is shown. This boundary line describes the dissipative heat output at a given housing speed, which usually corresponds to the output speed ABD. The area BUHBT, which is limited to the left by the maximum permissible slip performance curve MZSL, leads to impermissibly high component temperatures of the coupling, in particular the viscous coupling. The graph shows that when driving speeds ATD substantially greater than 2,350 rpm restrictions of the permissible output speeds ABD must be accepted.

FIG. 2 shows a sectional view of the fan drive device 1.

The fan drive device 1 has a fan wheel 2 of a fan 37, a viscous coupling 36, a pulley 16 and a holding element 33.

The fan 37 has a fan housing 4, a fan wheel 2 and a flange ring 3. The fan 2 is formed substantially of plastic. In particular, the fan wheel 2 is produced by means of a primary shaping production method, such as injection molding, in particular plastic injection molding. Since fan 2 has a plurality of fan blades 5.

The fan 37 further includes a fan housing 4. The fan housing 4 is formed substantially from plastic. The fan housing 4 is in particular produced by a urformendes manufacturing process, such as injection molding, in particular plastic injection molding or producible. In another embodiment, the fan 2 and / or the fan housing 4 are made of a material having a low density formed. The material may be, for example, a composite material, in particular a fiber composite material. In the fan housing 4, a flange 3 is arranged. The flange 3 may be formed of plastic or of a metal of low density such as aluminum. In another embodiment, the fan housing 4 and the flange 3 are integrally formed. In another embodiment, the flange 3 is formed as a simple plate. The plate may have a round shape or a rectangular shape or an oval shape or a shape having the aforementioned shapes. The flange 3 has at least one Flanschblechaussparung 32, in particular a plurality of Flanschblechaussparungen 32, on. The Flanschblechaussparung 32 can have a round or oval or angular shape or a shape of the combination of the aforementioned forms.

At least one flow guide element 8, in particular a plurality of flow guide elements 8, is arranged on the fan housing 4. The flow directors may be formed of plastic or other material, such as a low density metal such as aluminum. The flow guiding elements cause air in particular to flow along the air flow direction LS through the flange plate recesses 32 of the flange ring 3 and past the first housing element 9 and / or the second housing element 10 and the viscous coupling 36, in particular the first housing element 9 and / or the second housing element 10, cools. In another embodiment, the at least one flow guide 8 may be integrally formed with the fan housing 4 and / or the flange ring 3. The flow-guiding element is produced, for example, by a primary shaping production method such as casting, in particular injection molding or by a forming manufacturing process, such as, for example, bending or pressing.

The fan shaft 6 has an unspecified flange. About this unspecified flange, the fan shaft 6 with the flange 3 via at least a first fastener, in particular a plurality of fasteners, 7 such as screws and nuts, etc. positively connected. On the fan shaft 6, a first WaIz- bearing 11, in particular a first ball bearing, in particular a double row ball bearing, arranged. The unspecified inner bearing ring of the first rolling bearing 11 is connected by means of a press fit with the fan shaft 6.

Furthermore, the driven pulley 13 is arranged on the fan shaft 6. The fan shaft 6 has an unspecified hole, via which the Ab- drive disc 13 can be pushed onto the fan shaft 6. The driven pulley 13 may be connected to the fan shaft 6 by means of a press fit. In another embodiment, the driven pulley 13 is positively connected to the fan shaft 6. The fan shaft 6 is formed of steel, but may also be formed of aluminum or a fiber composite material.

The driven pulley 13 is formed of steel. Furthermore, the driven pulley 13 can also be formed from a fiber composite material or from ceramic. The driven pulley 13 has unspecified concentric labyrinth-shaped recesses. The recesses are in the driven pulley 13, for example, with an abrasive manufacturing process such as turning, milling, grinding, etc. introduced. In another embodiment, the concentric labyrinth-shaped recesses may be introduced into the driven pulley 13 by a blasting process, such as by means of a laser beam or by a forming manufacturing process, or by an initial forming manufacturing process. The recesses are arranged in an unspecified portion of the driven pulley 13 from the outermost radius of the driven pulley radially inwardly to an inner radius section. In section, the portion in which the labyrinth-shaped recesses are arranged has a shape like a trunk of a tree, from which a plurality of branches are arranged on the left and right of the trunk substantially at an angle of 90 ° to the trunk.

The driven pulley 13 has a first flow channel 18. The flow channel 18 is designed such that a first bore in the radial direction of the driven pulley extends from the outside radially inward to a certain inner radius. For this purpose, a second bore is arranged substantially vertically. The second bore is located at the level of the inner radius of the driven pulley. From the visco-coupling 36 is by means of a nub, which is not shown, generates a back pressure, so that fluid, in particular viscous fluid such as silicone oil, flows against the centrifugal force through the flow channel 18 into a storage space 20 of the viscous coupling 36 and the first housing element.

To the driven pulley 13 a unspecified housing with a first housing member 9 and a second housing member 10 is arranged. The first housing element 9 and the second housing element 10 are connected to one another in a form-fitting manner by at least one second fastening element 21, in particular a plurality of second fastening elements 21. In another embodiment, the first housing member 9 and the second housing member 10 are materially connected to each other, for example by soldering, gluing, welding, etc. In another embodiment, the first housing element 9 and the second housing element 10 are integrally formed. In another exemplary embodiment, the housing elements 9, 10 are formed around the driven pulley 13.

The first housing element 9 has an unspecified hole into which the first roller bearing 11 is inserted or pressed. The first housing element 9 has a section with unspecified labyrinth-shaped concentric recesses, which correspond essentially to the unspecified labyrinth-shaped concentric recesses of the driven pulley 13.

The second housing element 10 also has at least partially labyrinth-shaped concentric recesses, which correspond essentially to the unspecified labyrinth-shaped concentric recesses of the driven pulley 13. The concentric labyrinth-shaped recesses are in the first housing member 9 and / or the second housing member 10 by a machining process such as For example, turning, milling, grinding, etc. introduced. In another embodiment, the labyrinth-shaped concentric recesses in the first housing member 9 and / or in the second housing member 10 by a laser beam or by an original manufacturing process such as casting or injection molding or by means of a transforming manufacturing process such as presses introduced.

The first housing element 9 and / or the second housing element 10 are formed from a metal such as steel or aluminum or another light metal. In particular, the first housing element 9 and / or the second housing element 10 is produced by means of a primary shaping production method such as, for example, casting, in particular injection molding, in particular metal injection molding. In the illustrated embodiment, at least one bore 19, in particular two bores 19, is introduced into the second housing element 10. The holes have an unnamed angle of 5 ° to 60 °, in particular 10 ° to 50 °, in particular 15 ° to 47 °, in particular 20 ° to 45 °, in particular 30 ° to 45 °. Viscous fluid, in particular silicone oil, is introduced into the torque transmission chamber 15 due to the centrifugal force or flows into the torque transmission chamber 15 via the bore 19 or the two bores.

In the second housing element 10, a storage space 20 is formed. The storage space 20 is delimited at least in sections by a storage space disk 29 and a wall portion of the second housing element 10 which is not specifically designated. On the second housing element 10, a valve lever disc of an unspecified valve lever via a fixing point 31 to the second housing member 10 is rotatably connected. In particular, the valve lever disc 30 can perform a pivoting movement about the attachment point 31. During the pivoting movement, the bore 19 is released at least in sections. give. There are three possible positions of the valve lever disk 30. In a position 1, the bore 19 is closed, so that no viscous fluid, in particular silicone oil, can enter the bore 19 from the storage space 20. If the valve lever disk 30 is in position 2, the bore 19 is flow-connected to the storage space 20 at least in sections, so that fluid, in particular viscous fluid such as silicone oil, can flow into the bore 19. If the valve lever disk 30 is in position 3, an unspecified opening of the bore 19 is completely released, so that viscous fluid, in particular silicone oil, can enter the bore 19.

The valve lever disc 30 is connected to an anchor 38 cohesively and / or positively. The armature 38 can be actuated via the actuator 26 or the solenoid 27 or is driven by it. When actuated by the actuator 26 or the magnetic coil 27, the armature 38 in particular performs a rotational movement, which is transmitted to the valve lever disk 30. The valve lever disc 30 and the armature 38 have at least one unspecified bore, through which a sensor 24, in particular a rotational speed measurement sensor and / or a temperature measuring sensor, are pushed through. The second housing element 10 has at least one threaded bore, in particular a number of threaded bores, in the fastening elements 22, in particular third fastening elements, such as screws are screwed. In this way, the pulley 16, which is drivable with a belt, not shown, connected to the second housing element 10, in particular positively or materially connected. In another embodiment, the pulley 16 is connected to the first housing member 9. In another embodiment, the pulley 16 is formed integrally with the second housing element 10 and / or the first housing element 9. The pulley 16 has at least one pulley opening 17, in particular a number of pulley openings 17. Air can flow through the pulley openings 17 when the pulley 16 rotates or rotates, which cools the second housing element 10 and / or the first housing element 9. The pulley 16 has an unspecified hole, which is arranged in particular in the center of the pulley. This bore forms an unspecified hub section. In the unspecified hub portion, a second rolling bearing 23, in particular a ball bearing, in particular a two-row ball bearing, introduced or arranged. The second rolling bearing 23 is frictionally connected to the pulley 16, in particular by a press fit. In the illustrated embodiment, however, the pairing of the second rolling bearing 23 is carried out with the pulley 16 as a game or Übergangsspassung and the unspecified inner bearing ring is held by a nut not shown in detail, wherein the outer ring of the second rolling bearing 23 is designed as a floating bearing, so that the outer bearing ring of the second rolling bearing 23 can stretch freely when heated.

The inner bearing ring of the second rolling bearing 23 is arranged on a holding element 33, in particular on a flange. From the flange 33, an unspecified wave is formed at least in sections. The shaft has a first unspecified shaft shoulder and at least one second unspecified shaft shoulder. The second rolling bearing 23 is pushed onto the shaft portion with the unspecified inner bearing ring to the second unspecified shaft shoulder. The inner bearing ring touches the second unspecified shaft shoulder at least in sections. With an unspecified bearing safety device, in particular a screw, the unspecified inner bearing ring of the second roller bearing 23 is fastened on the shaft section of the retaining element 33, in particular of the flange. The holding element 33 has at least one bore 34, in particular a plurality of bores 34. Through the at least one bore 34, in particular through the plurality of holes 34, the holding element, in particular the flange, with a motor unit, not shown, screwed via not shown fastening elements such as screws to the motor unit, not shown, or connected thereto. From the holding element 33, in particular from the flange, the Halteelementwellenab- section 39 is formed. The holding element 33 or the Halteelementwellen- section 39 has a cavity 35, in particular a bore. The holding element shaft section 39 has an unspecified paragraph in the interior, which is in particular circumferentially formed as a shoulder. The cavity 35 of the holding element 33, in particular the holding element shaft section 39, has an unspecified first bore, which has a larger diameter than an unspecified second bore. The unspecified first bore is substantially cylindrical. The unspecified second bore is also cylindrical. In the unspecified second bore of the actuator 26 and the solenoid 27 is arranged. The actuator 26 or the magnetic coil 27 are designed such that they touch the bore at least in sections. The actuator 26 and the magnetic coil 27 are substantially cylindrical, so that they can be inserted into the second unspecified bore or are inserted or inserted. The actuator 26 and the magnetic coil 27 may have a cuboid shape in another embodiment.

In the illustrated embodiment, a sensor 24 is further arranged in the cavity 35 of the holding member 33 and the Halteelementwellenabschnitts 39. In the illustrated embodiment, the sensor 24 is a sensor for speed measurement. In another embodiment, the Sensor 24 but also be temperature sensor for temperature measurement. The sensor 24 is arranged substantially concentrically with the cavity 35 of the holding element 33 or with the cavity 35 of the holding element shaft section 39. In another embodiment, the sensor 34 may also be arranged outside the center, wherein the center is to be understood as substantially the axis of the unspecified second bore of the cavity 35. In the illustrated embodiment, the actuator

26 and the solenoid 27 an axially symmetrical substantially concentric bore, in which the sensor 24 is arranged. In another embodiment, not shown, the sensor 24 is not concentric and axisymmetric in the actuator 26 and the magnetic coil

27, but is disposed outside the axis of the actuator 26 and the solenoid 27. From the cavity 35 of the holding element 33, in particular of the flange, or the Halteelementwellenabschnitts 39, the at least one Aktuatorkabel 28, which serves in particular for powering the actuator 26 and the solenoid 27, from the holding element 33, in particular the flange, discharged to the outside , Furthermore, at least one sensor cable 25 of the sensor 24, in particular of the rotational speed sensor, out of the cavity 35 of the holding element 33, in particular of the flange, or the Halteelementwellenabschnitts 39 outwardly. The sensor cable 25 essentially serves to supply power to the sensor 24. The at least one sensor cable 25 and the at least one actuator cable 28 have a common cable channel, in which they are arranged substantially.

The holding element 33, in particular the flange, is arranged substantially rotationally fixed. The pulley 16 performs a rotational movement about the axis direction AR when driven by means of an unspecified and illustrated belt. Furthermore, the at least one first housing element 9 and / or the at least one second housing element 10 performs a rotational movement about the axis direction AR when the belt pulley 16 is driven. The pulley 16 and the at least one first housing element 9 and / or the at least one second housing element 10 have the same circumferential speeds.

The drive pulley 13 can also rotate about the axis direction AR. The driven pulley 13 rotates in particular about the axis direction AR if at least one torque is transmitted from the at least one first housing element 9 and / or the at least one second housing element 10 to the driven pulley 13 by fluid friction of the viscous fluid, in particular of the silicone oil. Due to the slippage, the driven pulley 13 usually has a lower circumferential speed than the pulley 16 or the first housing element 9 and / or the second housing element 10. If the drive pulley 16 is not driven and consequently the peripheral speed is 0 m / sec, the first housing element 9 or the second housing element 10 also has the peripheral speed 0 m / sec. In the illustrated embodiment, the driven pulley 13 is fixedly connected to the fan 2, so that the peripheral speed of the fan 2 at any time corresponds to the peripheral speed of the driven pulley 13.

In the operating state, the pulley 16 is driven at a drive speed. This drive speed is transmitted to the first housing element 9 and / or the second housing element 10 due to the positive connection between the pulley 16 and the first housing element 9 and / or the second housing element 10. The first housing element 9 and / or the second housing element 10 are cooled due to the rotational movement during operation and due to the attached ribs, in particular cooling ribs. In the illustrated embodiment game, the pulley 16 is rotatably mounted on the holding element 33, in particular the flange. In another exemplary embodiment, the at least one housing element 9 and / or the second housing element 10 can be rotatably arranged on the retaining element 33, in particular the flange. In the illustrated embodiment, the first housing member 9 is rotatably arranged relative to the fan shaft 6. The fan shaft 6 is essentially the output. In another embodiment, not shown, the fan shaft 6 is rotatable relative to the support member 33, in particular of the flange, arranged and / or stored. The sensor 24 may be, for example, a Hall sensor. The at least one first housing element 9 and / or the at least one second housing element 10 have radially extending cooling ribs. In another embodiment, the cooling fins extend vertically or horizontally to the axis direction AR. Furthermore, the cooling ribs can be arranged at an angle between 0 ° and 90 °, in particular between 15 ° and 80 °, in particular between 25 ° and 70 °, in particular between 30 ° and 60 °, in particular between 40 ° and 50 °.

Due to the drive of the at least one first housing element 9 and / or the at least one second housing element 10 through the pulley 16 results in a stronger flow through the unspecified ribs or cooling fins, since the air flows to cool due to the centrifugal force from the inside to the outside. This cooling effect is improved by the flow guiding element 8, in particular by the air guiding element which effects the air intake in the inner diameter region of the cooling ribs of the first housing element 9. By the pulley openings 17, the flow of the air is further improved.

FIG. 3 shows a sectional representation of a further embodiment of a fan drive unit 50. Identical features are provided with the same reference numerals as in the previous figures. In contrast to the fan device 1 of Figure 2, the holding member 51 is formed differently. The holding element 51 is in particular a flange. The holding element 51, in particular the flange, has a holding element shaft section 54, which is formed from the holding element 51. The holding member 51 is formed of steel or other metal. In particular, the holding element 51 is produced by an original molding process such as casting. The holding element 51 has at least one bore 52, in particular a plurality of bores 52, into which fastening elements such as screws can be inserted and with which the holding element 51 connected to a motor unit, not shown, in particular positively connected, can be.

The retaining element shaft section 54 of the retaining element 51, in particular of the flange, is formed in sections as a solid shaft and subsequently in sections as a hollow shaft. In the section which is designed as a solid shaft, a bore 52 is introduced into the holding element. The bore 52 is arranged centrally in the illustrated embodiment in the direction of the axial direction AR. In the bore 52, which is formed substantially cylindrical, the sensor 24 is arranged. The bore 52 is substantially so large as to receive the sensor 24 in its entirety substantially in the radial direction to the axial direction AR. In contrast to FIG. 2, the actuator 56 or the magnetic coil 57 is arranged externally on the retaining element shaft section 54. The actuator 56 and the magnetic coil 57 have a bore which is formed concentrically. The unspecified bore of the actuator 56 and the magnetic coil 57 is substantially cylindrical. The bore has substantially the unspecified same diameter, which has an unspecified portion of the support shaft element portion 54. The holding element shaft portion 54 is, for example, by an abrasive manufacturing process such as turning, milling, grinding, etc. in Substantially brought to the same diameter, the bore of the actuator 56 and the solenoid 57 has.

The holding element 51, in particular the flange, has a cavity 53, through which the actuator cable 28 and / or the sensor cable 25 are connected to the power supply in a cable channel 55.

The axially staggered arrangement of the rolling bearing 23 and the actuator 56 and the magnetic coil 57 allows a freer dimensioning of the bearing 23 and the magnetic coil. In particular, the bearing 23 can be made lighter and less expensive with smaller inner and outer diameters.

FIG. 4 shows a sectional representation of a further embodiment of a fan drive unit 70. Identical features are provided with the same reference numerals as in the previous figures.

In contrast to Figure 2, the flow guide 8 is integrated in this embodiment as a flow guide 73, in particular as an air guide in the fan housing plate 72. The fan housing 71 has at least one fan housing plate 72. The fan housing 71 is formed substantially like the fan housing 4 in FIG. The fan housing plate is made of plastic or of a metal, in particular with a low density. For example, the fan housing plate 72 may be formed of aluminum or steel. Furthermore, the fan housing plate 72 can be formed from a fiber composite material. The fan housing plate 72 has at least one flow guide 73 and is in particular integrally formed therewith. The fan housing plate 72 is made, for example, by an original molding process such as casting. The housing plate 72 may also be manufactured by a transforming manufacturing process such as pressing, stamping, etc. In particular, the flow guide element 73, in particular In particular, the air guide element, introduced by means of a urformenden or by means of a forming manufacturing process such as embossing, stamping, etc. in the fan housing plate 72.

Figure 5 shows an isometric view of a fan drive device 80, a fan 81 and a fan wheel 82. The same features are provided with the same reference numerals as in the previous figures.

The fan drive device 80 shown in FIG. 50 has a fan 81 with a fan wheel 82.

In the illustrated embodiment, the fan 82 has eleven fan blades 83. In another embodiment, the fan 82 may have one to eleven or more than eleven fan blades 83. Furthermore, the fan wheel 82 has unspecified flow guide elements, which are arranged on the fan blades 83 or are formed integrally with the fan blades 83. The fan wheel 82 also has a fan hub 84.

FIG. 6 shows a detailed view A of a fan drive device 80 of a fan 81 and of a fan wheel 82. Identical features are provided with the same reference numerals as in the previous figures.

The fan wheel 82 has a number of fan blades 83. In the exemplary embodiment shown, the fan blades 83 are designed in one piece with the fan hub 84. In another embodiment, the Lüfterradflügel 83 with the Lüfterradnabe 84 cohesively, in particular by welding, soldering, gluing, etc., and / or positively connected. In the illustrated embodiment, the fan 82 has twelve fan blades 83. In another embodiment, the fan wheel 82 has one to twelve fan blades 83 or more than 12 fan blades 83. The fan or the fan 81 leads in the illustrated embodiment a Rotary movement in the direction of the fan rotation LRDR off. From the Lüfterradnabe 84 air inlet channels 88 are formed. In the illustrated embodiment, six air inlet channels 88 are formed from the fan hub. In another embodiment, one to six or more than six fan wheel entry channels 88 are formed from the hub. In the illustrated embodiment, the at least one air inlet duct, in particular the six air inlet ducts, are formed integrally with the fan wheel hub 84. In another embodiment, the fan hub 84 on openings not shown. In the section of the openings, not shown, the air inlet ducts 88 are firmly bonded to the fan wheel hub 84, in particular by welding, soldering, gluing etc., and / or in a form-fitting manner.

The air inlet channels 88 are designed essentially as inlet diffusers. The at least one air inlet channel 88 has at least one air inlet channel opening 89. In the illustrated embodiment, the air inlet channel opening 89 is rectangular. In another embodiment, not shown, the air inlet channel opening 89 is round or oval or formed as a combination of round, oval, angular shape. Adjacent to the air inlet channel openings 89, a hub ring 87 is arranged substantially concentric to the axis direction AR. The hub ring 87 is formed integrally with the fan 81 and the fan wheel 82 in the illustrated embodiment. In another embodiment, the hub ring 87 may be positively or materially connected, in particular by welding, soldering, gluing, etc., with the fan wheel 82. In the illustrated embodiment, the hub ring 87 is formed of a metal such as stainless steel or other steel or aluminum. In another embodiment, the hub ring 87 may be formed of plastic or a fiber composite material. The hub ring 87 has in the illustrated embodiment, six hub bores 86, of which a hub bore 86 through an air inlet channel 88 is hidden in the isometric view. In another embodiment, the hub ring 87 has one to six hub bores 86 or more than six hub bores 86. In another embodiment, the hub ring made of metal during the prototyping process, in particular during injection molding, for example, during the plastic injection molding, introduced into the fan wheel 82 that the plastic is at least partially injected around the hub ring 87, so that the hub ring 87 after cooling the plastic is substantially fixedly connected to the fan wheel 82. The air inlet channels 88 are formed in the illustrated embodiment made of plastic. In another embodiment, the air inlet channels 88 are formed of another low density material such as a low density metal such as aluminum or a fiber composite.

When the fan 82 rotates in the direction of the Lüfterraddrehrichtung LRDR about the axis direction AR, air is conveyed in the direction of the air flow direction LS through the air inlet channel opening 89 in the direction of the first housing element 9 and / or the second housing element 10, not shown, at least a first housing element 9 and / or the at least one second housing element 10 are cooled. The at least one hub bore 86, in particular the six hub bores 86, serve for the positive fastening of the fan 81 and the fan wheel 82 with the fan shaft 6, not shown. The air inlet channels 88 form a radial fan, the cooling fins of the first housing element 9, not shown, and / or of the second housing element 10 form a kind of blades. This ensures that the cooling air leaves the cooling fins, not shown, of the first housing element 9 at the outermost circumference and that a favorable flow pattern is established. The air inlet ducts 88 can also be referred to as hoods. The air inlet ducts 88, in particular the hoods, are several times on the circumference of the hub bore 86 of the Fan 82 arranged, resulting in an axial blade effect in combination with a congestion effect by the rotation of the fan. Thus, the cooling air intake of working on the principle of a radial fan cooling fins of the first housing element 9 is improved. At the same time, the full material cross-section in this area of the fan hub 84 is maintained in contrast to simple axial openings, which is necessary for the transmission of the mechanical forces of the fan 81. Due to the box-shaped formation of the air inlet ducts 88, in particular the hood, the mechanical rigidity of the fan hub 84, in particular of the unspecified Lüfterflanschbleches be increased in the hub ring portion of the hub ring 87. The hub ring 87, in particular the fan flange, can be made as a formed part of sheet metal. In another embodiment, the fan hub 84, in particular the fan flange, may be formed as a cast part, in particular of light metal casting. In the formation of the fan hub 84 made of light metal casting, the geometric design freedom is greater. The properties of the cooling air delivery and the mechanical strength can then be increased even further.

Figure 7 shows a sectional view of another embodiment of a fan drive unit 100. Same features are provided with the same reference numerals as in the previous figures.

In contrast to the preceding embodiments, in the fan drive apparatus 100, the actuator 101 and the solenoid 102 are disposed further back in the holding member shaft portion 54. The cavity 53 receives the actuator 101 or the magnetic coil 102 at least in sections. An actuator cover plate 103 for covering the actuator 101 or the magnetic coil 102 has an unspecified opening from which the unspecified sensor cable and / or actuator cable of the actuator 101 or of the magnet coil 102 can be removed from the holding element. Mentwellenabschnitt 54 led out and connected to the power supply, not shown. In this way, the actuator 101 or the magnetic coil 102 is exposed to a lower heat load and the bearing 23 can be dimensioned more freely.

Figure 8 shows a sectional view of another embodiment of a fan drive unit 120. Same features are provided with the same reference numerals as in the previous figures.

In contrast to the previous figures, the pulley 123 is formed as a pulley ring 126. The pulley ring 126 has an unspecified opening. Furthermore, the second housing element 122 has at least one threaded bore 125, in particular a plurality of threaded bores 125. The first housing element 121 likewise has at least one bore, which is not designated in more detail. By means of a connecting element 124, in particular by means of a screw, the at least one pulley ring 126, the first housing element

121 and the second housing member 122 positively connected, in particular by screwing together.

The bearing 23 is arranged at least in sections in the second housing element 122. This arrangement of the rolling bearing 23 is particularly advantageous with respect to a heat dissipation of the second housing element

122 and with respect to the cost and weight of the second housing element. However, the diameter of the pulley 123 and the pulley ring 126 must be sufficiently large in relation to the diameter of the first housing member 121 and / or the second housing member 122 sized.

In another embodiment, not shown, the pulley 123 or the pulley ring 126 is integral with the first Housing element 121 and / or integrally formed with the second housing member 122. The first housing element 121 and / or the second housing element 122 are then correspondingly designed as a pulley 123 or as a pulley ring 126.

FIG. 9 shows a sectional illustration of a fan drive unit 140 with a coolant pump drive unit 141. Identical features are provided with the same reference numerals as in the previous figures.

In contrast to the previous figures, a coolant pump drive unit 141 is driven simultaneously by means of the pulley 146 in addition to the fan drive unit 140.

The unspecified fluid friction clutch, in particular viscous coupling, has a first housing element 143. Furthermore, the fluid friction clutch has a second housing element 145. The first housing element 143 is sealed off from the second housing element 145 by means of a sealing element 144, in particular an O-ring. The first housing element 143 and the second housing element 145 are positively and / or materially connected, in particular by means of a screw-nut connection. The first housing element 143 has labyrinth-shaped recesses 155. The at least one output disk 142 has corresponding labyrinth-shaped recesses 155. By means of an unspecified viscous fluid, in particular by means of silicone oil, at least one torque is transmitted at least from the one first housing element 143 to the driven disc 142 by means of fluid friction. The output disk 142 is positively and / or frictionally mounted on the fan shaft 6 or connected to the fan shaft 6. Furthermore, a first bearing 151 is arranged on the fan shaft 6 and in a section of the first housing element 143 which is not further described. The first bearing 151 is a roller bearing, in particular a single row deep groove ball bearing. By means of the first bearing 151, the first housing element 143, which is driven at a drive speed or rotates at a peripheral drive speed, is rotatably mounted relative to the lower output speed of the fan shaft 6.

The pulley 146 is driven by a belt, not shown. The pulley 146 is formed magnetic flux. The pulley 146 is positively and / or materially connected to the second housing member 145. The second housing element 145 is positively and / or materially connected to the magnetically conductive hub 157. The pulley 146 is formed magnetic flux conducting, that is, it is formed of a material which conducts the magnetic flux or is magnetizable. The magnetically conductive hub 157 is frictionally connected to a coolant pump shaft 150. In particular, the magnetically conductive hub 157 is shrunk onto the coolant pump shaft 150. The coolant pump shaft 150 has, at least in sections, a substantial peripheral recess, in particular a groove, which is designed as a bearing section. In the area of the unspecified bearing section, a second bearing 152 is arranged. The second bearing 152 is designed essentially as a roller bearing, in particular as a single-row deep groove ball bearing. The coolant pump shaft 150 is rotatably connected via the second bearing 152 to the coolant pump housing 149 or rotatably supported relative to the rotationally fixed coolant pump housing 149. The unspecified outer bearing ring of the second bearing 152 is positively connected to the coolant pump housing 149 via a non-designated shaft locking ring. The unspecified designated outer bearing ring rests, at least in sections, against a shoulder of the coolant pump housing 149 which is not described in more detail. Furthermore, at least one shaft sealing ring 153 is applied to the shaft. The shaft seal 153 prevents bearing oil escapes from the bearing 153 to the outside in particular.

The coolant pump shaft 150 serves to drive a coolant pump 156. An actuator 147 or a solenoid coil 148 is arranged on the coolant pump housing 149 on an unspecified coolant pump housing section. The actuator 147 or the magnetic coil 148 is pushed onto an unspecified shoulder of the coolant pump housing 149 on the coolant pump housing 149. The actuator 147 or the magnetic coil 148 is rotationally fixed, in particular arranged on the coolant pump housing 149.

The pulley 146, the second housing member 145, and the hub 147 are magnetically conductive and magnetically conductive, respectively. H. they are magnetizable or conduct the magnetic flux. The magnetically conductive hub 157 is connected to a magnet armature 159. The armature 159 is connected to a valve element 158, in particular with a valve lever. The valve element 158, in particular the valve lever, closes and / or opens an unspecified bore or opening of the bore 19th

In another embodiment, the magnetic flux-conducting pulley 146 is integrally formed with the second housing member 145.

The coolant pump 156 is a water pump in the illustrated embodiment.

The second housing element 145 is formed in the illustrated embodiment, not magnetically conductive, in particular made of a material which is not magnetically conductive and thus the magnetic isolation between the at least two hub 157 and the pulley 156 is used. FIG. 10 shows a sectional illustration of a further embodiment of a fan drive unit 170 with a bearing bush 171. Identical features are provided with the same reference numerals as in the previous figures.

In contrast to the preceding embodiments, the fan shaft 6 has a fan shaft bearing section 174. The Lüfterwellenlager- section 174 is circumferentially introduced into the fan shaft 6. The fan shaft bearing section 174 is introduced into the fan shaft 6 by means of an abrasive manufacturing process, in particular by means of grinding. The bushing 171 is at least partially pushed onto the fan shaft bearing portion 174 and contacts it at least in sections. The bushing 171 is pushed up to a shaft shoulder 173 of the fan shaft 6 and touched them at least in sections. Furthermore, the bearing bush 171 contacts the inner ring of the rolling bearing 11, in particular of the double row deep groove ball bearing at least in sections. The bushing 171 has a Lagerbuchsenkragen 172, which surrounds the bearing 11, in particular the inner ring of the bearing 11.

Since the driven pulley 13 has no direct contact with the outside environment, its heat load is relatively high. Apart from the viscous fluid, in particular the silicone oil, the driven pulley 13 can dissipate heat only via the fan shaft 6 to the environment. In this case, the unspecified inner ring of the bearing 11 is exposed to a high thermal load. In particular, the life of the bearing grease decreases sharply in increasing temperature, so that any reduction in the storage temperature leads to a lifetime extension of the bearing grease and / or the bearing. For this reason, the bushing 171 is formed of a material that conducts the heat poorly. The bushing 171 is formed for example of plastic. Further, the bushing 171 may also be formed of ceramic or a fiber composite material. FIG. 11 shows a sectional representation of a further embodiment of a fan drive unit 180 with a peripheral recess in the bearing seat 182, which is designed as a groove 183. Identical features are provided with the same reference numerals as in the previous figures.

In contrast to the previous figures, the fan shaft 6 has a fan shaft bearing section 181 into which a recess 182 has been inserted. The recess 182 is designed as a groove, in particular as a circumferential groove. Through the groove 183, the heat-transmitting surface of the fan shaft 6 is reduced to unspecified bearing inner ring of the bearing 11.

FIG. 12 shows a sectional illustration of a further embodiment of a fan drive unit 200 with a pulley unit 203 that can be dismantled by a fluid flow control unit 202. Identical features are provided with the same reference numerals as in the previous figures.

The fluid flow control unit 202 may correspond to the valve lever disc 30, for example. The fluid flow control unit 202 regulates the fluid flow, for example, to silicone oil, which can flow into the bore 19. The pulley unit 203 has at least the pulley 16, at least one bearing 23, the actuator 26, the sensor 24, and the holding member 33.

For service purposes, for example, the pulley unit 203 can be dismounted or disconnected by the fluid flow control unit 202. For example, in the case of a belt defect of the vehicle, it may be helpful in belt replacement if the fluid flow control unit 202 is detachable, disassemblable, and refillable from the pulley unit without the fluid, particularly oil such as silicone oil, running out of the fluid flow control unit 202 or other changes occur. In case of damage, for example, in an accident, both the in an accident, both the fluid flow control unit 202 and the pulley unit 203 may be independently changed.

The disassembly and / or separation of the fluid flow control unit 202 from the pulley unit 203 is carried out by unscrewing the third fastening elements 22, in particular screws. This is made possible by an oil-tight closure of the fluid flow control unit 202, which is formed for example by a closure cap 201, which is connected to the second housing element 10, in particular materially and / or positively connected. The closure cap 201 may also be inserted into the housing element 10. The closure cap 201 is thin-walled formed from a magnetically non-conductive material such as plastic. Due to the small wall thickness, the sealing capsule 201 allows the passage of magnetic fields on the one hand for actuating the magnet armature, on the other hand for actuating the sensor 24. The sealing cap 201 can also be formed by a thin-walled configuration of the housing element 10.

The features of the various embodiments can be combined with each other. The invention can also be used for other than the areas shown.

Claims

Patent claims

1. fan drive device (1, 50, 70, 80, 100, 120, 140, 170, 180, 200) for driving at least one fan wheel (2, 82) comprising at least one first drivable coolable housing element (9,

121, 143), at least one driven pulley (13, 142), which is connected to the at least one drivable coolable housing element (9, 121, 143) so as to be capable of transmitting torque in a fluid-transmitting manner, wherein at least one torque transmission chamber can be flowed through with at least one fluid whose mass flow is controlled by means of a valve element (30) is controllable, wherein the valve element (30) with at least one actuator (26, 27, 101, 102, 147, 148) is actuated, characterized in that the actuator (26, 27, 56, 57, 101, 102 , 147, 148) is arranged at least in sections in at least one holding element (33, 51) for attachment to a motor unit.

2. fan drive device according to claim 1 or according to the preamble of claim 1, characterized in that at least one sensor (24) at least partially in the at least one holding element (33, 51) is arranged for attachment to a motor unit.

3. fan drive device according to the preamble of claim 1, characterized in that the actuator (26, 27, 56, 57, 101,

102, 147, 148) is arranged on the holding element (33, 51) and the at least one sensor (24) is arranged at least in sections in the at least one holding element (33, 51).

4. fan drive device according to the preamble of claim 1, characterized in that the actuator (26, 27, 56, 57, 101,

102, 147, 148) is arranged on a coolant pump (156) and at least one hub (84) and a pulley (16, 123,

126) are formed magnetic flux conducting.

5. Fan drive device according to one of the preceding claims, characterized in that the actuator (26, 56, 101, 147) is a magnetic coil (27, 57, 102, 148).

6. Fan drive device according to one of the preceding claims, characterized in that the at least first housing element (9, 121, 143) by means of at least one pulley (16, 123, 126, 146) is drivable.

7. fan drive device according to one of the preceding Ansprü-, characterized in that the torque transmission space with a viscous fluid through at least one bore (19) is sieged.

8. fan drive device according to one of the preceding Ansprü- surface, characterized in that the holding element (33, 51) a

Flange is, which is arranged rotationally fixed.

9. Fan drive device according to one of the preceding claims, characterized in that the first housing element (9, 121, 143) and / or at least one second housing element (10,

122, 145) first concentric labyrinth-shaped recesses (155) and the driven pulley (13, 142) has second concentric labyrinth-shaped recesses corresponding thereto.

10. fan drive device according to claim 9, characterized in that the first and second recesses (155) are at least partially flowed through by the fluid, whereby in particular at least one torque of the housing member (9, 10, 121, 122, 143, 145) on the driven pulley (13, 142) is transferable.

11. Fan drive device according to one of the preceding claims, characterized in that from the driven pulley (13, 142) is formed at least one nub element for impounding the viscous fluid.

12. Fan drive device according to one of the preceding claims, characterized in that the fan drive device (1, 50, 70, 80, 100, 120, 140, 170, 180) has at least one storage space (20) for storing the viscous fluid.

13. Fan drive device according to one of the preceding claims, characterized in that the at least one storage space (20) with at least one drive speed of the pulley (16, 123, 126, 146) rotates.

14. Fan drive device according to one of the preceding claims, characterized in that the valve element (30, 158) has a valve lever with which at least one flow channel opening of a first flow channel (19) is closable.

15. Fan drive device according to claim 14, characterized in that the valve lever with the at least one housing element (9, 10, 121, 122, 143, 145), in particular elastically, is connectable.

16. Fan drive device according to claim 14 or 15, characterized in that the valve lever is pivotable about an attachment point.

17. Fan drive device according to one of the preceding claims, characterized in that the fan drive device (1,

50, 70, 80, 100, 120, 140, 170, 180) has at least one soft-magnetic guide element.

18. Fan drive device according to one of the preceding claims, characterized in that at least one transmitter element

(14) for output speed measurement on a Lüfterflanschwelle (6), in particular centrally, can be arranged.

19. Fan drive device according to one of the preceding claims, characterized in that the sensor (24) is for output speed measurement and / or is a Hall sensor.

20. Fan drive device according to one of the preceding claims, characterized in that at least one first cable (28) for powering the actuator (26, 27, 56, 57, 101, 102) and / or a second cable (25) for powering the sensor (24) in the holding element (33, 51) can be arranged.

21. Fan drive device according to one of the preceding claims, characterized in that the first housing element (9, 121, 143) and / or the second housing element (10, 122, 145) have cooling ribs.

22. Fan drive device according to one of the preceding claims, characterized in that the at least one fan wheel (2,

82) has at least one flow guide element (8) for cooling the housing element (9, 10, 121, 122, 143, 145).

23. Fan drive device according to one of the preceding claims, characterized in that the fan wheel (2, 82) at least one opening (32) for air flow (LS) and for cooling of the housing element (9, 10, 121, 122, 143, 145 ) having.

24. Fan drive device according to claim 23, characterized in that at least one flange plate (3) of the fan wheel (2, 82) has at least one opening (32) for the air flow (LS) and for cooling the housing element (9, 10, 121, 122, 143, 145).

25. Fan drive device according to claim 24, characterized marked, that the at least one flange plate (3) at least partially as a flow guide (8) for cooling the housing member (9, 10, 121, 122, 143, 145) is formed.

26. Fan drive device according to one of claims 24 to 25, character- ized in that the at least one flange plate (3) is formed at least in sections as a radial fan for cooling the housing element (9, 10, 121, 122, 143, 145).

27. Fan drive device according to one of claims 23 to 26, character- ized in that the at least one opening (32) as Spout (88) for cooling the housing element (9, 10, 121, 122, 143, 145) is formed.

28. Fan drive device according to one of the preceding claims, characterized in that the pulley (16, 123,

126, 146) has at least one pulley opening (17) for cooling the housing element (9, 10, 121, 122, 143, 145).

29. Fan drive device according to one of the preceding claims, characterized in that the pulley (16, 123,

126, 146) with the first housing element (9, 121, 143) and / or the second housing element (10, 122, 145) positively, in particular by screwing, is connectable.

30. Fan drive device according to one of the preceding claims, characterized in that the driven pulley (13, 142) has at least one driven pulley opening for cooling at least one hub portion of the driven pulley (13, 142).

31. Fan drive device according to one of the preceding claims, characterized in that the fan drive device (1, 50, 70, 80, 100, 120, 140, 170, 180) at least one bearing (11, 23, 151) for supporting the first and / or or second housing element (9, 10, 121, 122, 143, 145) and / or the pulley (16, 123, 126, 146).

32. Fan drive device according to one of the preceding claims, characterized in that at least one bearing seat portion (174, 181) of a fan shaft (6) has at least one, in particular circumferential, recess (182, 183) for cooling the driven pulley (13,

142).

33. Fan drive device according to claim 32, characterized in that on the at least one bearing seat portion (174, 181) of the fan shaft (6) at least one bearing bush (171), in particular of a poorly heat-conductive material, for cooling the driven pulley (13, 142 ) can be arranged.

34. Fan drive device according to one of the preceding claims, characterized in that the driven pulley (13, 142) with the at least one fan wheel (2, 82) is connected.

35. Fan drive device according to one of the preceding claims, characterized in that the first drivable housing element (9, 121, 143) and / or the at least second drivable housing element (10, 122, 145) rotatable relative to the Halteele- element (33, 51) are stored.

36. Fan drive device according to one of the preceding claims, characterized in that the first drivable housing element (9, 121, 143) and / or the at least second drivable housing element (10, 122, 145) are rotatably mounted with respect to the driven pulley (13, 142) ,

37. Fan drive device according to one of claims 1 to 35, characterized in that the driven pulley (13, 142) is rotatably mounted with respect to the holding element (33, 51).

38. Fan drive device according to one of the preceding claims, characterized in that at least one pulley unit (203) of a fluid flow control unit (202) for maintenance and / or repair purposes is removable and / or with the fluid flow control unit (202) mounted mountable.