CN101852215A

CN101852215A - Fan assembly

Info

Publication number: CN101852215A
Application number: CN201010136521A
Authority: CN
Inventors: 沃尔夫冈·巴斯; 马蒂亚斯·布兰德; 霍斯特·艾泽特
Original assignee: HKR Climatec GmbH
Current assignee: HKR Automobile Co., Ltd
Priority date: 2009-03-31
Filing date: 2010-03-31
Publication date: 2010-10-06
Anticipated expiration: 2030-03-31
Also published as: DE102009015770A1; FR2943864B1; IT1398941B1; FR2943864A1; ITMI20100396A1; DE102009015770B4; CN101852215B

Abstract

The present invention relates to a kind of fan assembly (1), it comprises at least one motor (2), and described motor (2) is used for driving the blast fan (6) that is connected with described motor (2).Described motor (2) is by control unit (18) control.Be provided with first housing (3) that is used to hold described motor (2).Second housing (13) is used to hold described control unit (18).Especially second housing (13) inserts in described first housing (3), makes that described second housing (13) partly protrudes from described first housing (3) under the state that inserts.

Description

Fan assembly

Technical field

The present invention relates to a kind of fan assembly, and especially a kind of fan assembly that has motor and be used to control the control unit of motor.

Background technique

For example from document US 5947189, become known for the fan assembly that in the cooling system of Motor Vehicle, uses, it has two fans at least, described two fans comprise an electronic fan motor that is arranged in the housing separately respectively, and the blast fan that is connected with fan motor and pass through this motor driven.Therefore, for its large-area ventilation of the cooling of Motor Vehicle, known fan structure illustrates two fan structures, and described two fan structures have housing separately respectively, and inserts and be used to improve in the common supporting frame of manipulation.By means of electric control device, aspect the rotating speed of fan motor, carry out the control of fan.Control gear and the corresponding fan in common supporting frame are arranged in the housing of oneself dividually.Fan is arranged on before or after the cooler with respect to the longitudinal axis of Motor Vehicle together with its supporting frame, so that produce air-flow by cooler.In addition, fan also can be controlled individually by the control gear that separates.

In addition, document EP 1327079B1 discloses a kind of fan structure that is used for Motor Vehicle, be provided with two fans in described Motor Vehicle, described two fans comprise an electronic fan motor that is arranged in the housing separately respectively, and can be by the blast fan of this fan motor driving.Control unit is used to control the work of fan motor.In this case, be provided with control unit as follows, this control unit is arranged in the housing of one fan motor in a plurality of fans, and constitute in addition, make the housing be provided with control unit fan motor and another does not have the fan of the control unit of oneself at least, can be controlled aspect its work.For this purpose, be provided with the corresponding circuit that is connected with another fan of controlling equally at least between the control unit in being arranged on motor casing by this control unit.

Usually the control unit that constitutes electronic control unit is arranged in the housing of fan motor as follows, this control unit fully inserts in the housing, and be used to control in the control unit of the power semiconductor that power is provided to fan motor comprising, be arranged on the cooling body that is used to discharge the loss heat, the cooling fin of described cooling body is formed on the outer surface of blower-casting (motor casing).Therefore, the cooling fin of the cooling body of the power semiconductor of control unit flushes with the outer surface of motor casing, wherein on the one hand, the air flows that produces by the blast fan by means of motor driven flows through on the cooling fin of power semiconductor, and on the other hand, in the inner formation of motor air flows, other electronic unit of control unit and the winding of motor are streamed and cooled off to described air flows.

But such setting is not suitable for all obtaining for each controllable running state of fan reliable and enough coolings of power semiconductor.In addition, flowing that can't accurately determine appears in motor interior, described mobile can flowing with respect to air outside (since the driving of blast fan, the air flows outside motor casing) directed on the contrary.In addition, because the electronic unit of the control unit in the motor casing, the physical dimension of fan is very big, because therefore need the housing lengthening especially in the axial direction, make when for example in the cooler of Motor Vehicle, such fan being installed, restricted installing space problem occurs.

Summary of the invention

Therefore, the objective of the invention is to, a kind of fan assembly that starts described type is provided, make one side guarantee the effective cooling of the structural element of control unit, and the physical dimension of fan assembly can keep short and small on the other hand.

This purpose is by according to being achieved according to a kind of fan assembly provided by the invention.

Fan assembly according to the present invention comprises at least one motor, and described motor is used to drive the blast fan that is connected with this motor.Motor is controlled by control unit.Be provided with first housing that is used to hold motor.Second housing is used to hold control unit.Especially, second housing inserts in first housing, makes under the insertion state, protrudes from first housing second housing parts.

According to described according to solution of the present invention, control unit partly is positioned at motor casing, and part is positioned at outside the motor casing, and wherein especially the power semiconductor outside the housing at motor of control unit (first housing) can be arranged in the direct air-flow of blast fan.Therefore, structure length, that is to say, the axial length that is used for the motor of drives fan wheel can keep short and small, because the control unit of motor that is used to control fan assembly is basically with the height setting of the brush of motor (brush motor), and therefore do not need the expansion (lengthening) of motor casing.First housing (motor casing) that is to say, with the formation of its axial arrangement limited length on its physical dimension basically on the size with motor.

By this way, reach the semiconductor element of control unit on the one hand, especially the best of power semiconductor and very effectively the cooling, and can keep the axial arrangement length of first housing of motor short and small on the other hand, because the common structural element of control unit roughly is arranged on the height of the brush in the housing of motor in the space between the brush.By control unit is set in this way, not only can optimize cooling, but also can shorten structure length in the way you want.

Relative therewith, in the prior art, be that a spot of gas motion is in motor.Usually because mobility status obtains the air flows with respect to the flows outside orientation of gas in motor, wherein also can obtain gas state of rest (not having air flows) on some position and under the condition of determining.In addition, the electronic unit of control unit is arranged on the brush top of motor, makes and compare with the motor that does not have such control unit that is used for drive fan that it causes the bigger structural type of motor.Therefore, in axial direction fully be arranged on by control unit above the brush of motor, except the bigger structure length of the total housing of needs, also influence the cooling of structural element and motor winding unfriendly.

In fan assembly according to the present invention, at least one motor can be for having the brush motor of brush, and second housing can insert in first housing, makes second housing along the axial longitudinal direction of motor projection on brush.

In addition, at least one motor can be for having the brush motor of brush, and second housing can insert in first housing, makes the housing parts of second housing be arranged in the space between the brush.

The control unit of fan assembly can have and is used to control at least one power of electric motor parts, and power component can be arranged in the housing parts that protrudes from first housing of second housing.

The air-flow that produces by blast fan can flow through on the housing parts that protrudes from first housing of second housing.

In fan assembly, second housing has: the external casing part that protrudes from first housing; And the inner shell part that is positioned at first housing, wherein the power structure element of control unit can be arranged in the external casing part, and other parts of control unit can be arranged in the inner shell part.

Motor can be for having the brush motor of brush, and the structural element of control unit can be arranged on the circuit board, and circuit board can be arranged in the space between the brush of motor.

In addition, motor can be for having the brush motor of brush, and wherein the structural element of control unit can be arranged on the circuit board.Circuit board can be arranged in the space of both sides of one of them brush of motor, and described in addition circuit board can have recess, and one of them brush of motor stretches in the described recess.

After in second housing inserts first housing, first housing can seal by housing lid.In addition, housing lid can constitute the end cap of motor, and second housing can be permanently connected with housing lid.

In fan assembly, control unit can constitute the more than one motor of control.

In addition, second housing externally has cooling fin in the zone of housing parts, and housing lid can constitute the end cap of motor and have ventilated port.

The power component of control unit can be the power semiconductor as transistor and diode, perhaps can be capacitor or inductor.

Description of drawings

Elaborate the present invention with reference to the accompanying drawings by means of embodiment below.Accompanying drawing illustrates:

Fig. 1 a illustrates the phantom according to the structure of the fan assembly that comprises control unit of the first embodiment of the present invention;

Fig. 1 b illustrates the phantom according to the alternative structure of the fan assembly that comprises control unit of the first embodiment of the present invention;

Fig. 2 illustrates the plan view according to the fan assembly of Fig. 1 according to first embodiment;

Fig. 3 illustrates the plan view of fan assembly according to a second embodiment of the present invention; And

Fig. 4 illustrates the block diagram of the control of a plurality of fan assemblys.

Embodiment

Below in conjunction with Fig. 1 a and Fig. 1 b explain according to the first embodiment of the present invention according to fan assembly of the present invention.

According to the diagram among Fig. 1, fan assembly 1 according to the present invention comprises at least one motor 2, and described motor is preferably brush motor and for example is direct current motor.Motor 2 is arranged in the housing 3, and comprises (unshowned) stator and rotor in known manner.For simplicity of illustration, in Fig. 1, just motor 2 is shown as function block (having hacures).

(unshowned) rotor of motor 2 can be around spin axis 4 rotation, and blast fan 6 can be fixed on the axle 5 of rotor, and described axle is rotatably installed by means of unshowned bearing means in Fig. 1.Therefore, relevant with the controllable sense of rotation and the rotating speed of motor 2, can produce the air-flow 7 (forced convection) of wishing around first housing 3 of fan assembly 1,, for example be implemented in the cooling action in the relevant cooling unit in Motor Vehicle or the miscellaneous equipment by means of described air-flow.The air-flow 7 that flows through on first housing 3 of fan assembly is represented by means of arrow in Fig. 1, and is outside air-flow.For example in this embodiment of the present invention, make progress directed with the sense of rotation of motor 2 and the structure of blast fan 6 according to the illustrated air-flow 7 among Fig. 1 relevantly.

In the diagram of Fig. 1, in first housing 3 of fan assembly 1, first space 8 is in the top of motor 2, and the motor winding terminates in the described space, makes the winding of stator and rotor have corresponding winding overhang in this first space.Therefore, configured and disposed relevant with winding overhang, first space 8 is partly empty.Before the corresponding winding overhang of the stator of motor 2 and rotor can terminate in first space 8, perhaps stretch into more or less in first space 8.

On first space 8, be provided with second space 9, in described second space, be provided with the required brush 10 of motor 2.The axle that is arranged on motor 2 on 5 current collector 2a (referring to Fig. 2 and 3) or the zone of commutator in be provided with the brush 10 of (constituting brush motor) motor (at least two brushes).Brush 10 is arranged on the corresponding holding device, makes them abut against on the current collector (commutator) of motor 2 by predetermined power.

The brush 10 of motor 2 schematically is shown in Fig. 1 a, two brushes 10 wherein schematically are shown in Fig. 2, described brush for example is provided with mutually with about 90 ° angle.Two brushes 10 are in second space 9 basically.Yet the present invention does not determine quantity and the structure according to the brush 10 of Fig. 2.On the contrary, two brushes 10 can be oppositely arranged on diameter each other, and perhaps for example four brushes also are oppositely arranged on diameter to star respectively each other, and positioned opposite to each other with identical respectively distance.

According to Fig. 1, fan assembly 1 comprises the lid 11 that is used to cover first housing 3 and therefore covers first and

second spaces

8 and 9, and wherein as need, lid 11 also can have the pivot bearing (not shown) of the axle 5 of motor 2.In this case, lid 11 is the end cap of motor 2 simultaneously.In addition, lid 11 ventilated ports that can be of different sizes and form differently can flow into the inside of first housing 3 by described ventilated port air-flow, wherein by this air-flow can cool motors 2 stator and rotor and brush 10 and current collector 2a.According to Fig. 1, be that this air communication of internal gas flow 12 is crossed arrow and represented in the inside of first housing 3.

Internal gas flow 12 has the intensity of the cooling that can guarantee motor 2 (stator and rotor) and brush 10 and current collector 2a.Especially the internal gas flow of representing by arrow 12 is in reverse to outer gas stream 7 orientations that produced by driven blast fan 6 usually, and wherein some in first housing 3 is local and also can obtain very little air flows or gas state of rest in the zone of the stator of motor 2 and rotor.

Second housing 13 is arranged in first and

second spaces

8 and 9 and outside the corresponding winding (winding overhang) of the stator of motor 12 and rotor and in the zone of brush 10, described second housing is less than first housing 3 that is used to hold motor 2.Electric structure element and electronic structure element (semiconductor structure element, for example power component) preferably can be arranged in second housing 13.In Fig. 1, for example common electric structure element 14 and for example diode and the transistorized common electronic structure element 15 of resistance and capacitor are shown in second housing 13.In second housing 13, be provided with for example power component of power semiconductor 16 equally.Electric structure element 14 and electronic structure element 15 and best a plurality of power semiconductor 16 are arranged on circuit board or the printed circuit board (PCB) 17, and are formed for controlling the control unit 18 of motor 2 jointly.Control unit 18 constitutes and is used to control at least one motor 2.

Control unit 18 is associated with motor 2 individually, and constitutes, and makes it possible to the motor with all required working state of control example safely such as motor 2.Specifically, the control of motor 2 comprises the control of rotating speed, torque and the sense of rotation of motor 2.

Second housing 13 inserts in first housing 3, makes second housing 13 partly be in first and

second spaces

8 and 9, and protrudes from first housing 3, and form the external casing part 13a that is arranged on outside first housing 3.Therefore, be that the external casing part 13a of the part of second housing 13 is in first housing 3 outer gas stream 7 that passes through blast fan 6 formation outward, make air-flow 7 externally flow through targetedly on the housing parts 13a.Especially external casing part 13a stretches out along the radial direction with respect to the spin axis 4 of motor 2 from first housing 3 of motor 2.

Electronic structure element 15 and especially being preferably disposed in the external casing part 13a of second housing 13 as the power component of power semiconductor 16 because they during operation, that is to say, is emitted the loss heat at the control period of the running of motor 2.Therefore it is therefore preferable that power semiconductor 16 is arranged in the external casing part 13a of second housing 13, and be subjected to the pressure cooling that occurs when the motor operation by means of the outer gas stream 7 that forms by blast fan 6.

Cooling in the zone of the housing parts 13a that directly flows through for the air-flow 7 that improves externally, the external casing part 13a of second housing 13 can have corresponding cooling fin 19 and/or cooling channel, makes the power semiconductor 16 of control unit 18 to cool off forcibly and reliably by means of air-flow 7.For example, power component can be arranged on the cooling body that self is integrated in the external casing part 13a, and wherein the cooling fin 19 (Fig. 2) of cooling body outwards freely is provided with towards outside air-flow 7.Cooling fin 19 is formed on the part on external casing part 13a surface at least.

Therefore, required power component (power semiconductor 16) with known bigger loss heat mainly is arranged in the external casing part 13a, and electric structure element 14 and electronic structure element 15 can cool off by means of more weak internal gas flow 12, and therefore are arranged in the inner shell part 13b of second housing 13.Therefore, these

structural elements

14 and 15 are arranged in inner shell part 13 on the circuit board 17 in the corresponding way, make to guarantee to be flow through and therefore guaranteed corresponding cooling by gas (part of internal gas flow 12).

Therefore, second housing 13 roughly is in first and

second spaces

8 and 9 on the height of the brush 10 of motor 2 by the inner shell part 13b that is arranged in first housing 3, and therefore be in the space of first housing 3, described space be in motor 2 brush 10 the next door and between.Control unit 18, and the structural element in second housing 13 14 to 16 that especially belongs to control unit 18 is no more than (with respect to the spin axis 4 according to Fig. 1 a) to heavens projection of brush 10 by this structure, makes the top of electric structure element or the brush 10 that electronic structure element is not arranged on motor 2 of control unit 18.

Because the power component (power semiconductor 16 outside first housing 3 of motor 2 especially, as power transistor and diode, or capacitor and inductor) be arranged in the housing parts 13a, and therefore be arranged in the compulsory air flows (air-flow 7), so improve the cooling of these structural elements, and in the inner shell part 13b in being in first housing 3, be provided with a spot of structural element.The structure that this means equally as the less circuit board of circuit board 17 makes it possible to improve the internal gas flow 12 in first housing 3 and the motor 2, and avoids flow resistance in this case.In first housing 3 and the setting of outer part, also can in this zone, improve cooling by second housing 13.By being provided with in the housing 13a externally of for example power component outside first housing 3 (as power semiconductor 16), remaining structural element of control unit 18 can be arranged on being in the part in first housing 3 of second housing 13.As shown in Fig. 1 a, this can be located at the one or both sides of the corresponding brush 10 of motor 2.

Be arranged in second housing 13 by structural element control unit 18, can keep the size of motor 2 short and small, and therefore keep the size of first housing 3 also short and small, wherein especially (can cut down the structure length of motor 2 (housing 3) on Fig. 1 direction a) at spin axis 4.Control unit 18 second housing 13 be in the part in first housing 3 electric structure element 14 and electronic structure element 15 can with relevant ground is set in the height in first and second spaces, makes full use of whole first and

second spaces

8 and 9 of the corresponding winding of motor 2.This is provided with the cooling that must guarantee by the internal gas flow 12 by corresponding ventilated port.In this case, ventilated port is formed in the lid 11 of the end cap that can be set to motor 2.

Preferably be arranged in the external casing part 13a of second housing 13 and therefore be arranged on power components in the air-flow 7 that produces by blast fan, wherein also can be capacitor and/or inductor (magnetic coil) power component for the transistor of for example MOSFET (mos field effect transistor) and diode quite efficiently.According to the diagram among Fig. 1 a and the 1b, electric component 14 and electronic unit 15 and power semiconductor 16 and other power component are arranged on the circuit board 17, and in Fig. 1 a and 1b, preferably point to downwards in first and

second spaces

8 and 9, make that the intermediate space in first and

second spaces

8 and 9 and between brush 10 can occupy at least in part by the structural element of control unit 18.The inner shell part 13b of second housing 13 is arranged in this space of the structural element of control unit 18, and the external casing part 13a of second housing 13 is arranged on outside the motor casing 3, and therefore also is arranged on outside first and

second spaces

8 and 9.

Because be arranged on as the power component of power semiconductor 16 in the housing 13a of outside of second housing 13, and therefore be arranged on outside first housing 3, thus control unit 18 first and

second spaces

8 and 9 in and the parts in the zone of the brush 10 of motor 2 preferably occupy half also little space in the space of needs when being arranged in first and

second spaces

8 and 9 equally than power component at control unit 18 by this structure.

Second housing 13 and especially inner shell part 13b have ventilated port (for example vent hole), so that allow internal gas flow 12 (arrow in Fig. 1 a) to flow through, perhaps the inner shell part 13b of second housing 13 is set to, make in first and

second spaces

8 and 9 and between the brush 10 of motor 2, remain with corresponding space (passage) emptyly that described space allows in internal gas flow 12 inflow motors 2.

In structure shown in Fig. 1 a, two of second housing 13 part 13a and 13b insert in first housing 3 in described structure, and the lid 11 that wherein can constitute the end cap that is used for motor 2 is installed in the housing 3 of motor 2, and therefore be installed on second housing 13, and therefore can seal total, and especially second housing 13 can remain on fixedly also on its position in first housing 3.

In according to the illustrated alternative structure among Fig. 1 b, (preferably constituting the end cap of motor 2) lid 11 also can be permanently connected with second housing 13, make second housing 13 and lid 11 to be installed on first housing 3 of motor 2, and therefore second housing 13 is in first and

second spaces

8 and 9 and is between the brush 10 of motor 2 in a predetermined manner as parts.This can cause assembling easy when the manufacturing of fan assembly 1 according to the present invention.The corresponding circuit that is provided with for example connector connection between the structural element of motor 2 and control unit 18 connects.Reach mode of execution by this way in conjunction with the compactness of the lid 11 (end cap) of second housing 13.

Identical according to the structure in principle of the alternative form of implementation of Fig. 1 b and action principle and Fig. 1 a.Here, by means of external casing part 13a, need the power component (for example power semiconductor 16, inductor, capacitor) of stronger cooling also especially to protrude from first housing 3 of motor 2, and directly be in the outer gas stream 7 that produces by blast fan 6.

In order to constitute internal gas flow 12, lid 11 also preferably has ventilated port, make the structural element in the inner shell part 13b of being arranged on not only can cool off control unit 18, but also brush 10 and current collector 2a that can cool motors 2, and can be in other be through-flow the rotor of cool motors 2 and the winding of stator.

Preferably constitute integratedly according to the illustrated circuit board 17 in Fig. 1 a and 1b, and the housing parts 13a from the outside extends to inner shell part 13b in second housing 13.The corresponding structure element of control unit 18 is arranged on the preposition of circuit board 17, and fixing conductively.Need the power component as power semiconductor 16 of stronger cooling to be preferably disposed on being in the external casing part 13a basically and therefore being in the outer scope of first housing 3 of circuit board 17.

In the structure according to Fig. 1 a and 1b, the brush 10 of motor 2 irrespectively is provided with the mechanism of the control unit 18 in second housing 13.Brush 10 is not connected with second housing 13, make second housing 13 guarantee to have control unit 18 simple assembling with separate.But, as required with the basic structure of motor 2, brush 10 also can be mechanically be integrated in the control unit 18 electricly, and therefore also be integrated in second housing 13.In this case, second housing 13 inserts in first housing 3 of motor 2, makes that not only brush 10 abuts against on the current collector 2a in the corresponding way, and to guarantee the setting of the power component outside housing 3 in the mode shown in Fig. 1 and 2.

Second housing 13 that is provided with the control unit 18 with structural element therein preferably has such hull shape, make between the brush 10 of motor 2, to make full use of first and

second spaces

8 and 9 in first housing 3 best, wherein guarantee the ventilation of passing through internal gas flow 12 of motor 2 simultaneously.

Fig. 2 illustrates according to the plan view of the setting of Fig. 1 a (in Fig. 1 a from top observation), and three power components (in this case, for example three power semiconductors 16) for example wherein are shown on circuit board 17.The present invention does not determine the quantity of the power component on circuit board 17 and concrete setting, makes that the power component at the more or lesser amt on the circuit board 17 can be arranged on the different positions.But, power component (for example power semiconductor 16) is preferably disposed on being in the interior scope of external casing part 13a of circuit board 17, makes these power components be exposed to the air-flow through the corresponding cooling fin 19 on the external casing part 13a of blast fan 6.

Other structural element of control unit 18 as electric structure element 14 and electronic structure element 15 be arranged on circuit board 7 with in the structural element zone 20 shown in the hacures.Structural element zone 20 is positioned at second housing 13, and especially is positioned at inner shell part 13b, preferably between the brush 10 and be positioned on the height of brush.

Two brushes 10 of motor 2 are shown to example in Fig. 2, and described brush is mutually with about 90 ° angle setting, and abuts against in a predetermined manner on current collector (commutator) 2a of motor 2.But also can be provided with brush with corresponding heteroid a greater number (brush to).

Shown in Figure 2 by means of sense of rotation arrow 21, motor 2 can be by means of control unit 18 with different sense of rotation control.Relevant with the equipment to be cooled that uses fan assembly 1, the predetermined sense of rotation that can preferred motor 2 and the predetermined flow direction of therefore preferred air flows.

Fig. 3 illustrates another embodiment of fan assembly 1 of the present invention.

When the embodiment that also is applicable to according to the side view of Fig. 1 a and 1b and phantom according to Fig. 3, with according to the embodiment of Fig. 2 different be, be provided with plural brush 10 (for example two brush to) according to the embodiment of Fig. 3, the brush that wherein is relative to each other is oppositely arranged on diameter respectively, and each brush 10 has about 90 ° angle each other.

Circuit board 17 is in second housing 13, and roughly is positioned at according to the diagram among Fig. 1 a on the height of brush 10, and especially in the intermediate space between each brush 10.Because brush 10 according to a greater number of second embodiment of Fig. 3, compare with the circuit board 17 among first embodiment, circuit board 17a has recess 22, makes to obtain additional intermediate space 23 between the brush 10 in circuit board 17a and the recess 22 at circuit board 17a.By means of intermediate space 23 and at brush 10 with according to other intermediate space between the circuit board 17a of Fig. 3, can be formed for the corresponding air flows of rotor winding and staor winding and the brush 10 and the current collector 2a of cool motors 2.

With with mode identical in Fig. 2, in Fig. 3, the corresponding structure element area is shown definitely with hacures, wherein have two-part (structural element zone 20a and 20b illustrate with hacures) in the both sides of recess 22 according to the structural element among second embodiment of Fig. 3 in Fig. 3.Power component, for example in Fig. 3 with the power semiconductor 16 shown in the form of three structural elements, to be arranged in the zone of circuit board 17 with mode same in first embodiment, make them be positioned at the external casing part 13a of second housing 13 on the one hand, and therefore be positioned at the air-flow 7 of blast fan 6.As among first embodiment, preferably be provided with cooling fin 19 at the external casing part 13a of second housing 13.

In the housing parts 13b of inside, the electric component of other of control unit 18 and electronic unit for example are arranged on circuit board 17a in two structural element zone 20a and the 20b.

In the diagram in Fig. 2 and 3 of the plan view that the fan assembly 1 (not covering 11) according to Fig. 1 a is shown from above, circuit board 17 (Fig. 2) or circuit board 17a (Fig. 3) protrude from first housing 3 significantly, have wherein selected to be used for the diagram of the situation that speaks better.In fact, circuit board 17 and 17a constitute as follows, just externally must occupy holding power structure element (for example power semiconductor 16) and cooling off required space safely and sufficiently by the corresponding cooling body with cooling fin 19 outside first housing 3 in the housing parts 13a.The present invention does not determine in the ratio shown in Fig. 1 to 3, because its schematic diagram of just illustrating.

In the same manner as in the first embodiment, setting by means of circuit board 17a and structural element zone 20a and 20b and the circuit board zone outside first housing 3, reach the same function of the saving of structure space, because be arranged on structural element in structural element zone 20a and the 20b and the circuit board 17a of control unit 18 are arranged in the space between the brush, and therefore are arranged in first and second spaces 8 and 9.Circuit board 17a or the fixing thereon not protruding circuit board 17a of surpassing of structural element and the therefore also not protruding top edge that surpasses brush 10 are (referring to Fig. 1 a).On the contrary, between brush, consider and make full use of the relevant structural element that mounting circuit boards and control unit 18 are come in first and

second spaces

8 and 9 as much as possible.

Structure with the circuit board that is separately positioned on the structural element on the circuit board 17 of the control unit 18 that is used to control motor 2 or 17a causes the small construction size of fan assembly 1, and the small construction size that especially causes motor 2 at its axial direction, because the space between the corresponding brush 10 of motor 2 is used for the structural element of installation and control unit 18, and the part that does not have structural element or circuit board 17 or 17a projection (referring to Fig. 1 a and 1b) on the top edge of the brush 10 of motor 2 in axial direction.Therefore above brush 10, just be provided with and cover 11, described lid also can constitute end cap, and therefore is formed for the supporting of the rotor of motor 2.

Therefore, in the inner shell part 13b that the part-structure element is arranged on second housing 13, and by power component (for example power semiconductor 16) being arranged in the external casing part 13a of second housing, and by external casing part 13a being arranged on outside first housing 3 of motor, the structural element of control unit 18 partly is integrated in first housing 3 of motor 2, and be positioned partially at outside first housing 3, preferably be positioned at air-flow 7 by the rotation formation of blast fan 6.Structural element in inner shell part 13b needs the power component of stronger cooling to be arranged in the stronger air-flow 7 of blast fan 6 by (more weak usually) internal gas flow cooling period in first housing 3.Such setting of power component causes the raising of safety in operation, especially under the slow-revving situation of motor 2 and blast fan 6, because in the less air flows of therefore combination, and the power component of cooling settings outside housing 3 sufficiently.

Therefore, the setting outside first housing 3 of the power component by control unit 18 (that is to say, externally in the housing parts 13a), guarantee the effective cooling of corresponding power component, and there is the installation in the saving space of control unit 18 in the partly setting of (and therefore also in second housing 13) in first housing 3 of other parts of the setting of the machinery outside first housing 3 of the power component of control unit 18 and control unit 18.Therefore reduce the axial structure length of motor 2, wherein guarantee to be used for the cooling of the best of power component simultaneously.Especially for additional electric component and electronic unit, needn't above the brush 10 of motor 2, provide other space.

If be provided with the corresponding plug connector that is used to be electrically connected, can carry out manufacturing with the form of simplifying, because just must insert second housing 13 in predetermined mode according to fan assembly 1 of the present invention.Because in the zone of brush 10, just need the predetermined recess (predetermined shape, size and position) of first housing 3 of motor 2 to insert second housing 13, so also do not need the significant change of motor (for example motor 2).If assembled second housing 13, so can mounting cover 11.

Alternately, the lid 11 (end cap) that is permanently connected with second housing 13 can be installed on first housing 3 of motor 2 as parts by one procedure.

Therefore, can keep compact structure size according to fan assembly 1 of the present invention, and the compact structure size on axial direction (according to the axis 4 of Fig. 1 a) of motor 2 especially.By the change slightly on motor 2, can use at commercial general motor, make it possible to reach cost advantage by more number of packages.

For protect power component and based on the insulation reason; the external casing part 13a of second housing 13 fully seals; yet the inner shell part 13b that is positioned at first housing 3 seals with partially opening or sealing equally fully; wherein under latter event, can prevent near the especially pollution of other parts current collector 2a of control unit 18.

Therefore, fan assembly 1 according to the present invention can use anywhere, there because how much situations (situation) need the little axial arrangement length of the motor 2 of drive fan.By the setting that describes in detail of the structural element of control unit 18, constitute total structure length of fan assembly 1 in the above as far as possible very shortly.

Fig. 4 illustrates the third embodiment of the present invention, and wherein the diagram among Fig. 4 relates to for example control of a plurality of motor of first and second embodiments' motor 2 basically.

Block diagram according to Fig. 4 comprises power supply device 24, described power supply device for example can be set to the form of battery or public electrical network, and described power supply device provides voltage, the described voltage a plurality of motor M that are connected of CCU 25 and " n " (" n " is natural number) that are suitable for turning round ₁, M ₂..., M _N-1And M _nMotor M ₁To M _nCan or differently constitute by identical type constitution.Corresponding motor M ₁To M _nForm fan assembly LV ₁, LV ₂..., LV _N-1And LV _nDriving element.For simplicity of illustration, in Fig. 4, omitted relevant blast fan.

With the mode of explanation in the above in conjunction with first and second embodiments, each fan assembly LV ₁To LV _nHave motor, and be used for each relevant motor M as motor 2 ₁To M _nThe control unit 18 of independent control.Control unit 18 is at each motor M ₁To M _nIn be arranged in separately the housing---as second housing 13---according to first and second embodiments, and insert motor 2 or motor M ₁To M _nCorresponding first housing 3 in.Each is individually at corresponding motor M ₁To M _nIn the control unit 18 that is provided with can be connected with CCU 25.

But in the diagram in Fig. 4, there is not the second fan assembly LV ₂The second motor M ₂Control unit 18 and CCU 25 between direct the connection.On the contrary, at the second motor M ₂Control unit 18 in exist and the first motor M ₁The connection of control unit 18.The first fan assembly LV ₁The first motor M ₁Control unit 18 have the connection that is used for CCU 25.

In this case, control unit 18 constitutes, and makes it not only directly control the first fan assembly LV ₁The first motor M ₁, in described first motor, be provided with relevant control unit 18, and the first motor M ₁Control unit 18 can also be by being used for the second motor M ₂The linking route transmitting control instruction of control unit 18, and therefore control the second motor M ₂In this case, with corresponding motor M ₁And M ₂Two control units that are associated can differently constitute, but be provided with the setting of second housing 13 of control unit 18 therein, the structural element of control unit 18 in first housing 3 part integrated, and the power component of control unit 18 according to the setting outside these embodiments' (Fig. 1 to 3) first housing 3, be applicable to each control unit 18 in the diagram in Fig. 4.

No matter whether control unit 18 can also control another motor 2 at least respectively with the motor 2 that this control unit 18 is associated except control, be provided with the structure of the machinery of control unit 18 in the mode shown in Fig. 1 to 3.

In this case, in the cooling unit of for example motor car engine (internal-combustion engine), CCU 25 can be the central computer device of Motor Vehicle, and wherein other setting of each that is connected with central computer device (control computer, control gear) also is suitable for using according to fan assembly 1 of the present invention.

For example, can use two or morely according to fan assembly of the present invention in the cooling equipment of Motor Vehicle, wherein the structure length that reduces on the axial direction of motor by fan assembly 1 only needs little spatial requirement for each fan assembly.When using a plurality of same fans to be provided with, also guarantee to have advantage according to fan assembly 1 of the present invention.

The structural element of control unit 18 is arranged in the housing that separates as second housing 13 and can causes, and the whole assembly of control unit can be changed and assembling at low cost apace, because just handle second housing 13.Be electrically connected and preferably be connected to form by means of having the circuit that connector connects.When second housing 13 and lid 11 (end caps of motor 2) when constituting integratedly (Fig. 1 b), also produce this advantage so.

At CCU 25 be used for power between the independent control unit 18 of each motor and connect and be connected to form, especially form by the bunch of cables that correspondingly constitutes by corresponding cable.

By CCU 25 is provided,---by described CCU, each motor or groups of motors can be by the controls of turning up the soil of other each motor or component---, possible is, according to for example cooling requirement in the cooling equipment of Motor Vehicle, and control each motor or groups of motors in the operation conditions of the reality aspect the fan power (rotating speed of motor 2) of each motor or groups of motors relevantly.In the process of cooling method, when the temperature of the freezing mixture in cooler descended, each motor reduced on power significantly, and perhaps each motor or groups of motors can be closed.Possible by this way is to improve and the adaptation of in esse cooling requirement respectively in simple mode.

By means of the embodiment relevant the present invention has been described above with accompanying drawing.But to those skilled in the art, it is evident that, of the present invention according to institute's diagrammatic sketch structure and be used for the reference character of corresponding parts and constituent element in the drawings, and the physical dimension of the example of each element of the present invention and location design without restriction.On the contrary, institute's diagrammatic sketch is based on the schematic representation of principle.The present invention is not subject to illustrated shape and ratio.

All forms of implementation and the deformation program that fall in the claims are regarded as belonging to a part of the present invention.

Claims

1. fan assembly has:

At least one is used for the motor (2) of drives fan wheel (6);

Be used to control the control unit (18) of described motor (2);

Be used to hold first housing (3) of described motor (2); And

Be used to hold second housing (13) of described control unit (18), wherein said second housing (13) inserts in described first housing (3), makes that described second housing (13) partly protrudes from described first housing (3) under the state that inserts.

2. fan assembly as claimed in claim 1, wherein said at least one motor (2) is for having the brush motor of brush (10), and wherein said second housing (13) inserts in described first housing (3), makes described second housing (13) not go up projection at described brush (10) on the axial longitudinal direction (4) of described motor (2).

3. fan assembly as claimed in claim 1, wherein said at least one motor (2) is for having the brush motor of brush (10), and wherein said second housing (13) inserts in described first housing (3), makes the housing parts (13b) of described second housing (13) be arranged in the space (9) and is arranged between the described brush (10).

4. as each described fan assembly in the claim 1 to 3, wherein said control unit (18) has the power component (16) that is used to control described at least one motor (2), and described power component (16) is arranged in the housing parts (13a) of described first housing of protruding from of described second housing (13) (3).

5. fan assembly as claimed in claim 1 or 2, wherein the air-flow (7) that produces by described blast fan (6) flows through on the housing parts (13a) of described first housing of protruding from of described second housing (13) (3).

6. fan assembly as claimed in claim 1, wherein said second housing (13) has: the external casing part (13a) that protrudes from described first housing (3); And the inner shell part (13b) that is positioned at described first housing (3), and the power structure element (16) of wherein said control unit (18) is arranged in the described external casing part (13a), and other parts of described control unit (18) (14,15) are arranged in the described inner shell part (13b).

7. fan assembly as claimed in claim 6, wherein said motor (2) is for having the brush motor of brush (10), and the described structural element of described control unit (18) (14,15,16) is arranged on the circuit board (17,17a), and described circuit board (17,17a) is arranged in the space (9) and is arranged between the described brush (10) of described motor (2).

8. fan assembly as claimed in claim 6, wherein said motor (2) is for having the brush motor of brush (10), and the described structural element of described control unit (18) (14,15,16) is arranged on the circuit board (17a), described circuit board (17a) is arranged in the space (9) and is arranged on the both sides of one of them described brush (10) of described motor (2), and described circuit board (17a) has recess (22), and one of them described brush (10) of described motor (2) stretches in the described recess (22).

9. as each described fan assembly in the claim 1 to 8, wherein in described second housing (13) inserts described first housing (3) after, described first housing (3) seals by housing lid (11).

10. fan assembly as claimed in claim 9, wherein said housing lid (11) constitutes the end cap of described motor (2), and described second housing (13) is permanently connected with described housing lid (11).

11. as each described fan assembly in the claim 1 to 10, wherein said control unit (18) constitutes control more than one motor (2).

12. as each described fan assembly in the claim 1 to 11, wherein said second housing (13) has cooling fin in the zone of described external casing part (13a).

13. fan assembly as claimed in claim 9, wherein said housing lid (11) constitutes the end cap of described motor (2) and has ventilated port.

14. as claim 4 or 7 described fan assemblys, wherein said power component (16) is transistor and diode.

15. as claim 4 or 7 described fan assemblys, wherein said power component (16) is a capacitor.

16. as claim 4 or 7 described fan assemblys, wherein said power component (16) is an inductor.