EP2118493B1 - Fan having a sensor - Google Patents

Abstract

A radial fan comprises a fan housing (2) with an air outlet opening (22', 24', 26', 28') and a carrier (12) provided in the fan housing (2), a fan wheel (11) having fan blades (21) being rotatably arranged on said carrier for creating an air flow (99). A plurality of connecting pins (16) is arranged on the carrier (12) for electrically connecting a drive motor (10). The fan further comprises a circuit board (70) arranged in the fan housing (2), said circuit board having an opening (75) for the passage of the air flow (99). Said circuit board is provided with openings (77) for the connecting pins (16). The fan comprises a first and a second carrier element (73) with a first and second electrical connection (73'). The carrier elements extend with the free ends (72', 73') thereof into the air passage opening (75) such that the free ends (72', 73') thereof are spaced from each other. The fan also has a sensor (71) for detecting a parameter of the air flow (99) generated during operation. The sensor (71) comprises a first and a second sensor connection (71'), with a first and a second electrical connection (73'), so that the air flow (99) flows around the sensor (71).

Description

The invention relates to a fan with a sensor, and in particular a fan with a sensor for detecting a parameter of the air moved by the fan.

Such fans, which are also referred to as sensor fans, usually contain an electronically commutated motor whose rotor drives a fan. The latter sucks in air via an air passage opening, in the region of which one or more sensors are arranged, e.g. an NTC resistor at which a current air temperature is measured, or sensors for humidity, quality, radioactivity etc. of the air. Based on appropriate sensor data, e.g. the air conditioning of a motor vehicle are controlled.

Since sensor fans are usually designed as mini-fans, they are usually very small, so that it is difficult and associated with considerable costs to mount the sensors. In addition, an electrical connection to a connector of the fan must be made from the mounting location of the sensor, which causes additional costs.

From the DE 20 2006 002 789 U1 , which is considered to be the closest prior art, a mini fan is known, which is designed as a radial fan. This has an inlet opening in which a crosspiece is arranged. On the upstream side of this crossbar, an NTC resistor is arranged, which serves to measure the temperature of the air flowing into the fan. Such sensor fans are primarily used to control air conditioning systems in motor vehicles, and it is very difficult to detect the desired air parameter, ie usually the temperature of the air, so well and free from interference that ensures reliable control of the temperature in the vehicle at all ambient temperatures is.

It is therefore an object of the invention to provide a new fan with a sensor.

This object is achieved according to the invention by a fan according to claim 1. One thus achieves an accessible suspension of the sensor at an air outlet opening of the Fan, so that the sensor can be easily flowed around by the air flow, before the latter emerges from the at least one air outlet opening. By using the spaced apart support elements to achieve a simple and straightforward installation of the sensor, whereby this of the fan Moving air is flowed around and thus an improved detection of a corresponding air parameter is made possible.

Preferred developments of the fan according to the invention are the subject of the dependent claims.

Fig. 1

eine perspektivische Ansicht eines Lüfters mit einem Lüftergehäuse gemäß einer ersten Ausführungsform,

Fig. 2

eine Seitenansicht einer ersten Seite des Lüfters von Fig. 1,

Fig. 3

eine Seitenansicht einer zweiten Seite des Lüfters von Fig. 1,

Fig. 4

eine Seitenansicht einer dritten Seite des Lüfters von Fig. 1,

Fig. 5

eine Seitenansicht einer vierten Seite des Lüfters von Fig. 1,

Fig. 6

eine Draufsicht auf die Unterseite des Lüfters von Fig. 1 ohne Lüftergehäuse,

Fig. 7

eine Schnittansicht des Lüfters von Fig. 1 ohne Lüftergehäuse,

Fig. 8

eine perspektivische Ansicht des Lüfters von Fig. 1 ohne Lüftergehäuse,

Fig. 9

eine perspektivische Ansicht der Leiterplatte des Lüfters von Fig. 8,

Fig. 10

eine Draufsicht auf die Rückseite der Leiterplatte von Fig. 8,

Fig. 91

eine Draufsicht auf die Vorderseite der Leiterplatte von Fig. 8,

Fig. 12

eine Draufsicht auf den Lüfter von Fig. 1 mit Lüftergehäuse,

Fig. 13

eine perspektivische Ansicht des Lüfters von Fig. 1 mit einem Lüftergehäuse gemäß einer zweiten Ausführungsform,

Fig. 14

eine perspektivische Ansicht des Lüfters von Fig. 1 mit einem Lüftergehäuse gemäß einer dritten Ausführungsform,

Fig. 15

eine perspektivische Ansicht des Lüfters von Fig. 1 mit einem Lüftergehäuse gemäß einer vierten Ausführungsform,

Fig. 16

eine perspektivische Ansicht des Lüfters von Fig. 1 mit einem Lüftergehäuse gemäß einer fünften Ausführungsform,

Fig. 17

eine perspektivische Ansicht des Lüfters von Fig. 1 mit einem Lüftergehäuse gemäß einer sechsten Ausführungsform,

Fig. 18

eine Strichzeichnung der Darstellung aus Fig. 8,

Fig. 19

eine Strichzeichnung der Darstellung aus Fig. 9,

Fig. 20

eine Stichzeichnung der Darstellung aus Fig. 11, und

Fig. 21

eine Strichzeichnung der Darstellung aus Fig. 12..

Further details and advantageous developments of the invention will become apparent from the hereinafter described and illustrated in the drawings, in no way as a limitation of the invention to be understood embodiments. It shows:

Fig. 1

a perspective view of a fan with a fan housing according to a first embodiment,

Fig. 2

a side view of a first side of the fan of Fig. 1 .

Fig. 3

a side view of a second side of the fan of Fig. 1 .

Fig. 4

a side view of a third side of the fan of Fig. 1 .

Fig. 5

a side view of a fourth side of the fan of Fig. 1 .

Fig. 6

a plan view of the bottom of the fan of Fig. 1 without fan housing,

Fig. 7

a sectional view of the fan of Fig. 1 without fan housing,

Fig. 8

a perspective view of the fan of Fig. 1 without fan housing,

Fig. 9

a perspective view of the circuit board of the fan of Fig. 8 .

Fig. 10

a plan view of the back of the circuit board of Fig. 8 .

Fig. 91

a plan view of the front of the circuit board of Fig. 8 .

Fig. 12

a top view of the fan of Fig. 1 with fan housing,

Fig. 13

a perspective view of the fan of Fig. 1 with a fan housing according to a second embodiment,

Fig. 14

a perspective view of the fan of Fig. 1 with a fan housing according to a third embodiment,

Fig. 15

a perspective view of the fan of Fig. 1 with a fan housing according to a fourth embodiment,

Fig. 16

a perspective view of the fan of Fig. 1 with a fan housing according to a fifth embodiment,

Fig. 17

a perspective view of the fan of Fig. 1 with a fan housing according to a sixth embodiment,

Fig. 18

a line drawing of the representation Fig. 8 .

Fig. 19

a line drawing of the representation Fig. 9 .

Fig. 20

a stitch drawing of the presentation Fig. 11 , and

Fig. 21

a line drawing of the representation Fig. 12 ..

In the following description, the terms left, right, front, back, top, and bottom refer to the respective drawing figure and may vary from one drawing figure to another depending on a particular orientation (portrait or landscape). Identical or equivalent parts are denoted by the same reference numerals in the various figures and usually described only once.

Fig. 1 shows a fan 1 with a fan housing 2 in a perspective view. The fan housing 2 is box-shaped and has an in Fig. 1 The bottom wall 197 shown above with attached side walls 22, 24, 26, 28. The wall 197 and the side walls 22, 24, 26, 28 are formed for example as a one-piece plastic molding, wherein the side walls 22, 24, 26, 28 at the wall 197 are molded.

In the wall 197 openings 172, 174, 176, 178 are provided, which form latching elements. At this latching members 182, 184, 186, 188 are held, which are provided on fastening means 15. In Fig. 1 the fastening means 15 are exemplified as slotted snap pins 15 ', 15 ", 15"' and 15 ^IV , respectively. Their function is below at the 6 and 7 described.

The wall 197 has a cup-shaped attachment 197 'with an opening 196 (FIG. Fig. 1 ), through which a - not shown - connector for electrical contacting of the fan 1 to contacting pins 78 can be connected. In Fig. 1 four pins 78 ', 78 ", 78"' and 78 ^{IV are} shown, wherein the fan 1, for example, the pins 78 "and 78"'for supplying an operating voltage and the pins 78' and 78 ^IV for picking up a tacho signal. The connector can be held by means of a holder, such as a clip 39, the fan housing 2.

The associated with the wall 197 side walls 22, 24, 26, 28 have at their free, lower ends in each case at least one recess 29, in which latching tongues 30 engage a cover plate 195 in order to secure it to the fan housing 2. In Fig. 1 are exemplified two recesses 29 'and 29 "at the lower end 2' of the front side wall 22 and two recesses 29"'and 29 ^IV at the lower end 2 "of the right side wall 24 visible, in which the locking tongues 30', 30", 30 "'or 30 ^IV intervene.

The cover plate 195 has a recess 199 serving as an axial air inlet opening. One or more recesses serving as air outlet openings are provided in the side walls 22, 24, 26, 28. These have according to a first embodiment, an oval shape, but may also have other shapes, as in the FIGS. 13 to 17 described. In Fig. 1 For example, the front side wall 22 has an oval air outlet opening 22 'and the right side wall 24 has an oval air outlet opening 24'.

During operation of the fan 1, the latter transports air (with fan blades 21, which are provided on a fan wheel 11) to air (FIG. Fig. 7 ). This is sucked through the air inlet opening 199 in the fan housing 2 and moved with the fan blades 21 to flow through the air outlet openings 22 'and 24' out of the housing 2 again. The fan 1 is thus preferably a radial fan, as below in the Fig. 7 and 8th described in detail. It should be understood, however, that the invention is not limited to the use of certain types of fans, such as radial fans. Rather, other types of fans, such as diagonal fan or axial fan can be used.

Fig. 2 shows a plan view of the right side wall 24 of the fan housing 2 of Fig. 1 , Fig. 2 illustrates the provided on the wall 197 essay 197 'and shows another, formed at the lower end 2 "of the right side wall 24 recess 29 ^IX , in which a provided on the cover plate 195 latching tongue 30 ^IX engages.

Fig. 3 shows a plan view of the left side wall 28 of the fan housing. 2 Fig. 3 shows at the lower end 2 ^{IV of} the left side wall 28 formed recesses 29 ^VII and 29 ^VIII , in which provided on the cover plate 195 locking tongues 30 ^VII or 30 ^VIII engage. In addition, shows Fig. 3 an example provided in the left side wall 28, oval air outlet opening 28 '.

Fig. 4 shows a plan view of the front side wall 22nd Fig. 4 illustrates the latching members 172 and 174 held on the locking members 182 and 184 and the Kontaktierungs-pins 78 ', 78 ", 78"' and 78 ^IV , which are attached to a circuit board 70, which at the bottom of the Fig. 5 . 7 and 9 to 11 is described in detail.

Fig. 5 shows a plan view of the rear side wall 26 of the fan housing. 2 Fig. 5 shows at the lower end 2 '' of the rear side wall 26 formed recesses 29 ^V and 29 ^VI , in which engage on the cover plate 195 provided latching tongues 30 ^V and 30 ^VI Fig. 5 a provided in the rear side wall 26, oval air outlet opening 26 '.

How out Fig. 5 As can be seen, the printed circuit board 70 of the fan 1 is arranged in the region between the side wall 26 and the fan wheel 11, as shown below Fig. 7 and 8th described. The printed circuit board 70 has an air passage opening 75, the dimensions of which essentially correspond to the dimensions of the air outlet opening 26 ', so that an air flow generated by the fan blades 21 of the fan wheel 11 can first emerge from the fan housing 2 through the air passage opening 75 and then through the air outlet opening 26'.

Provided on the printed circuit board 70 are a first carrier element 72 with a first electrical connection 72 '(conductor track) and a second carrier element 73 with a second electrical connection 73' (conductor track) which preferably extend in a straight line into the air passage opening 75 and are spaced from one another. The support member 72 has a free end 72 "and the support member 73 has a free end 73" which face each other. The electrical connection 72 'of the carrier element 72 is connected to a first sensor connection 71' of a sensor 71 for detecting a parameter of the air flowing through the air passage opening 75. A second sensor connection 71 "of the sensor 71 is connected to the electrical connection 73 'of the carrier element 73 Electrical connections 72 'and 73' preferably mechanically and electrically connected to the sensor terminals 71 'and 71 ", that the sensor 71 extends in a straight line between the electrical terminals 72' and 73 'and the air flowing through the air passage opening 75, the sensor 71st In particular, the sensor 71 may be an SMD sensor, which is attached to the carrier elements 72, 73 in SMD construction (SMD = Surface Mounted Device).

According to a preferred embodiment, the air moved by the fan 1 is free to the sensor 71, i. on all sides, flow around. This improves the detection of the parameter of the air flowing through the opening 75. This parameter characterizes, for example, speed, temperature, moisture content or quality of the air moved through the air passage opening 75.

Fig. 6 shows the fan 1 of Fig. 1 without the fan housing 2 and the circuit board 70 of Fig. 5 shown in a view from below. This view shows a carrier 12, which is designed as a plastic molding. Guide extensions 12 ', 12 ", electrical connections 16, for example formed as connection pins, and guide pins 51, 52 are arranged, preferably injected, in the fitting 12. The guide extensions 12', 12" serve as in FIG Fig. 8 described for attaching the carrier 12 to the circuit board 70th

The injected or inserted pins 16 are made of metal. The one end 161 of the pins 16 is conductively connected to one end of winding wires 9, respectively, and the other end 162 of the pins 16 projects out of the carrier 12. The connecting pins 16 are preferably formed at right angles, wherein the one end 161 is arranged in the plane of the carrier 12 designed as a substantially planar part and the end 162 protrudes from the carrier 12 substantially at right angles. Likewise, the guide pins 51, 52 are preferably also formed as rectangular pins of an electrically conductive material having one ends 151, 152 lie in the plane of the carrier 12 and the other ends 153, 154 substantially the same length and parallel to the other ends 162 of the pins 16 protrude from the carrier 12.

A yoke element 17 for a rotor magnet (45 in Fig. 7 ), In the exemplary embodiment, a ferromagnetic sheet-metal disc in the form of a circular ring, is also injected in the fitting 12 with. The example designed as a slotted snap pin fasteners 15 of Fig. 1 are molded onto the underside of the fitting 12. The fastening means 15 serve as an assembly aid or for fastening the carrier 12 in the fan housing 2 of Fig. 1 , On the underside of the fitting 12 spacer bolts 25 are mounted, preferably molded, which to maintain a distance between the bottom of the fitting 12 and the fan housing 2 of Fig. 1 serve or that can be used as a passport or guide pin. The above-described embodiment of the stator, in particular of the stator carrier 12, allows a largely automated production, ie the winding, striking and applying the coil ends to the pins 16, soldering and testing can be done on a machine.

Fig. 7 shows in section along the line VII-VII of Fig. 6 Details of the embodiment of the fan 1 of Fig. 1 to 6 , This has a motor 10 for driving the fan wheel 11, which here is an electronically commutated flat motor with a rotor 45 to which the fan 11 is mounted. The motor 10 has a bobbin 121, which is a part of the carrier 12 in this embodiment. On this bobbin 121, a stator winding 13 is applied, which has a drive and a sensor winding.

The fan 11, which in this case is designed as a so-called capped radial fan, contains a shaft 5, which serves as a rotor shaft. The shaft 5 is radially mounted in a bearing assembly 34 fastened in a bearing support tube 14, for example a sintered double bearing. Depending on the use, the bearing arrangement 34 can also be designed as a roller bearing. The upper bearing support tube 14 is preferably also part of the injection-molded fitting 12. An upper edge 8 of the bearing support tube 14 which is elongated in the axial direction and reduced in its outer diameter serves in conjunction with an area of the sintered bearing 34 reduced in its outer diameter for axial securing of the bearing 34. The sintered bearing 34 can also be fixed by gluing, caulking etc.

In the region of the upper edge 8, a magnetic auxiliary arrangement 18 (ferromagnetic or permanent magnetic arrangement) is attached. This can be designed to further reduce costs as a stamped from rubber-magnetic material disc. The arrangement of the bearing shell 6 determines the size of the substantially planar air gap 7 between the rotor magnet 45 and the stator winding 13. The motor 10 has only one stator winding, which has a drive winding and a sensor winding and preferably bifilar wound. To avoid length, the shape of the winding and the circuit is based on the content of the DE 87 02 271 U1 Referenced.

The fan 11 includes substantially radially extending blades 21 which are disposed between a first guide member 41 and a second guide member 42. The first guide member 41 has a central, substantially planar air inlet opening 43, which in Fig. 1 approximately in the area of the air inlet opening 199 is located. The first and the second air guide member 41, 42 form in the axial cross-section seen in this embodiment, a radially outwardly expanding air outlet cross-section. For other applications, a narrowing cross-section and also different cross-sectional shapes can be designed.

In the area of the air inlet opening 43 there is a section 58 in which the shaft 5 of the fan wheel 11 is fastened. In the second air guide member 42, a ferromagnetic return plate 44 is fixed, on which the rotor magnet 45 is arranged for the motor drive of the fan wheel 11. It can also be used a pole-oriented magnet without a back plate.

How out Fig. 7 4, the ends 161 of the terminal pins 16 formed on the carrier 12 project through openings or holes 77 provided for this purpose in the printed circuit board 70 (FIG. 80) and are soldered there. Thus, the terminal pins 16 are contacted with components 79 ', 79 "of the motor electronics 79 (transistors, resistors, etc.) for the motor 10, which are disposed on the circuit board 70. The ends 162 may be electrically connected, for example Connecting one or more components of the engine electronics 79, which are not arranged on the circuit board 70 to save space or can be arranged. When using the at the Fig. 9 to 11 printed circuit board 70 remain the ends 162 unused, so that they can be dispensed with.

Fig. 7 illustrates the air passage opening 75 of the circuit board 70, through which flows through the generated by the fan blades 21 of the fan 11 air flow 99. How out Fig. 7 clearly visible, the air flow 99 in this case flows around on all sides between the free ends 72 ", 73" of the support members 72 and 73 arranged sensor 71, the sensor terminals 71 ', 71 "in SMD construction with the on the support elements 72, 73rd provided electrical terminals 72 'and 73' are electrically and mechanically connected.

Fig. 8 and Fig. 18 show the fan 1 the Fig. 1 to 7 without the fan housing 2 in perspective view. Fig. 8 illustrates the arranged on a front side of the printed circuit board 70 components 79 ', 79 "and an exemplary further component 79"' of the motor electronics 79 and through holes 74 ', 74 "in the circuit board 70 through projecting guide extensions 12' and 12". In addition, clarify Fig. 8 and Fig. 18 the projecting through the openings 77 in the circuit board 70 and there, for example, soldered ends 161 of the connection pins sixteenth

It should be noted, however, that soldering the ends 161 of the pins 16 to the openings 77 is not mandatory. Rather, alternative, also known fastening techniques can be used. For example, the ends 161 may be in the form of press-fits, so that pressing the pins 16 into the openings 77 is sufficient to mechanically and electrically connect the pins 16 to the circuit board 70.

The printed circuit board 70 is thus held on the one hand by the connecting pins 16 and on the other hand by the guide extensions 12 ', 12 "at a predetermined angle to the carrier 12. In this case, the air passage opening 75 is arranged relative to the fan 11, that of its fan blades 21st In the operation of the fan 1, moving air flows through the air passage opening 75. In the example shown, the carrier 12 and the circuit board 70 are in such relation to one another arranged that the circuit board 70 extends approximately parallel to the axis of rotation 5 of the fan 11.

Fig. 9 . Fig. 19 and Fig. 10 show the back of the circuit board 70 of Fig. 8 , The Fig. 9 and 10 illustrate the example protruding perpendicularly from the circuit board 70 Kontaktierungs connection pins 78 ', 78 ", 78"', 78 ^{IV provided} for the terminal pins 16 openings 77 and arranged in the air passage opening 75 sensor 71, here an NTC sensor.

As described above, the sensor 71 is fastened to the carrier elements 72, 73, which, by way of example, extend rectilinearly from different sides of the air passage opening 75 into these. It should be understood, however, that other configurations of the circuit board 70 and the support members 72, 73 are possible within the scope of the invention. For example, the circuit board 70 can be shortened such that a - in Fig. 10 Lower portion 180 is omitted. In the illustrated embodiment, this region 180 extends by way of example to a dashed line 185, so that the air passage opening 75 is approximately halved when omitting the region 180 and thus only one recess would be present in the form of an oval halved in the longitudinal direction. In this recess, the support elements 72, 73 may extend from both sides, ie in Fig. 10 coming from right or left. Alternatively, they could also run parallel to each other, for example, from the openings 77 "and 77"'in Fig. 10 down, or at a predetermined angle to each other, for example, from the openings 77 'and 77 ^IV in the direction of a fictitious crossing point in Fig. 10 , so that completely can be dispensed with an air passage opening or -ausparung.

Fig. 11 and Fig. 20 show the front of the circuit board 70 of Fig. 8 to illustrate the electrical connections 72 'and 73' of the support elements 72 and 73 according to one embodiment. In addition, the sensor terminals 71 'and 71 "of the sensor 71 fastened in SMD construction to the carrier elements 72, 73, which extend above the surface of the printed circuit board 70, are illustrated.

In Fig. 20 the sensor 71 is not shown, and it can be seen the flat, rectangular pads 72 ', 73' for the sensor terminals 71 ', 72'.

Fig. 12 and Fig. 21 show a plan view of the bottom of the fan 1 of Fig. 1 without the cover plate 195. In particular, shows Fig. 12 an inner space 250 of the fan housing 2, in which the fan wheel 11 is arranged on the (not visible) support 12.

The fan housing 2 has a guide 200 for the circuit board 70 in order to simplify their mounting in the housing 2. The fan housing 2 has air guide members 210 ', 210 "for guiding the air flow generated by the fan 11 during operation of the fan 1 in the direction of the air passage opening 75 of the circuit board 70th

FIGS. 13 to 17 show the fan 1 of Fig. 1 with the fan housing 2, in which in each case at least one of the air outlet openings 22 ', 24', 26 ', 28' has a modified configuration. In Fig. 13 For example, the air outlet openings 22 'and 24' are shown in the form of an elongated oval. In Fig. 14 are the air outlet openings 22 'and 24' circular, in Fig. 15 rectangular with rounded corners, in Fig. 16 diamond-shaped with rounded corners and in Fig. 17 square with rounded corners.

Naturally, many modifications and modifications are possible within the scope of the present invention.

Thus, instead of the two support elements 72, 73, only one in the manner of a springboard in the air passage opening 75 of the circuit board 70 protruding first support member 72 may be provided with two preferably parallel conductor tracks, wherein the sensor 71 is disposed either on the support member 72 or only on the Connections 71 ', 71 ", which are preferably arranged on the same side of the sensor 71, with the support member 72 and the conductor tracks 72', 73 'are connected and unobscured by the support member 72 in the air passage opening 75 can be flowed around by air.

Claims (15)

1. Radial-flow fan, comprising:

   a fan housing (2) having at least one air outlet opening (22', 24', 26', 28');

   a carrier (12), which is provided in the fan housing (2) and on which a fan impeller (11) having fan blades (21) for generating an air stream (99) flowing through the at least one air outlet opening (22', 24', 26', 28') is rotatably disposed;

   a plurality of connector pins (16) for the electrical connection of a drive motor (10) associated with the fan, which connector pins are disposed on the carrier (12);

   a printed-circuit board (70) disposed in the fan housing (2) and having an air through-opening (75) for passage of the air stream (99) generated during operation by the fan blades (21), which printed-circuit board (70) has openings (77) for the connector pins (16);

   characterized by

   a first carrier element (72) having a first electric terminal (72'), and a second carrier element (73) having a second electric terminal (73'), which carrier elements (72, 73) extend with their free ends (72", 73") into the air through-opening (75) in such a way that their free ends (72", 73") are mutually spaced apart;

   a sensor (71) for acquiring a parameter of the air stream (99) generated during operation by the fan blades (21), which sensor (71) comprises a first sensor terminal (71') and a second sensor terminal (71"), wherein the first sensor terminal (71') is mechanically and electrically connected to the first electric terminal (72') and the second sensor terminal (71") is mechanically and electrically connected to the second electric terminal (73') in such a way that the air stream (99) generated during operation by the fan blades prior to its passing out of the at least one air outlet opening (22', 24', 26', 28') flows around the sensor (71).
2. Fan according to claim 1, wherein the first sensor terminal (71') and the second sensor terminal (71") are connected in such a way to the first electric terminal (72') and the second electric terminal (73') that the air stream (99) generated during operation by the fan blades (21) may flow around the sensor (71) on all sides.
3. Fan according to claim 1 or 2, wherein the first sensor terminal (71') and the second sensor terminal (71") are connected in an SMD style of construction to the first electric terminal (72') and the second electric terminal (73').
4. Fan according to one of the preceding claims, wherein the free ends (72", 73") of the carrier elements (72, 73) are directed towards one another.
5. Fan according to claim 4, wherein the first carrier element (72) and the second carrier element (73) are directed rectilinearly towards one another.
6. Fan according to one of the preceding claims, wherein the sensor (71) extends rectilinearly from the first electric terminal (72') to the second electric terminal (73').
7. Fan according to one of the preceding claims, wherein the printed-circuit board (70) has at least one recess (74', 74"), through which projects a guide extension (12', 12") that is provided on the carrier (12) and used to fasten the printed-circuit board (70) to the carrier (12).
8. Fan according to claim 7, wherein the printed-circuit board (70) and the carrier (12) are disposed approximately at right angles to one another.
9. Fan according to one of the preceding claims, wherein components (79', 79") of the motor electronics (79) are disposed on the printed-circuit board (70).
10. Fan according to one of the preceding claims, wherein the connector pins (16) are disposed approximately at right angles to the axis of rotation (5) of the fan impeller (11) on the carrier (12).
11. Fan according to one of the preceding claims, the fan housing (2) of which is of a box-like construction.
12. Fan according to claim 11, wherein the box-shaped fan housing (2) has an axial air inlet opening (199).
13. Fan according to claim 11 or 12, the fan housing (2) of which has sides (22, 24, 26, 28), at least one of which is provided with an air outlet opening (22', 24', 26', 28').
14. Fan according to one of the preceding claims, the fan housing (2) of which comprises at least one detent element (172, 174, 176, 178), and wherein the carrier (12) comprises at least one detent member (182, 184, 186, 188) that is connected to the detent element (172, 174, 176, 178).
15. Fan according to one of the preceding claims, the fan housing (2) of which comprises a guide (200) for the printed-circuit board (70) as well as at least one air baffle member (210', 210") that is designed to guide the air stream (99) generated during operation by the fan impeller (11) to the air through-opening (75) of the printed-circuit board (70).

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