JP4014101B2 - ROTOR FAN DRIVE DEVICE, COOLING DEVICE, VENTILATION DEVICE, SUCTION AND EXCIPTION DEVICE WITH THIS ROTOR FAN DRIVE DEVICE - Google Patents

Description

  The present invention relates to a rotor fan driving device. More specifically, a cooling device that is placed on an electronic device or the like that requires heat dissipation and that provides a cooling effect by blowing air from a fan, an intake / exhaust device for ventilation, or an intake / exhaust fluid device for replacement of liquid It is related with the rotor fan drive device with which it is equipped.

  2. Description of the Related Art Conventionally, in OA equipment such as a personal computer, a FAX, and a printer, an electronic device that requires heat dissipation has been provided with a device that promotes cooling, exhaust heat, or the like by fan blowing. The cooling device generally includes a rotor fan driving device that drives the rotor fan using a power device such as a brushless motor or a small axial fan motor. Moreover, as a power unit used for a rotor fan driving device, a brushless motor is improved and a mechanism including a stator and a coil circuit board is provided, and a mechanism in which the coil circuit board is arranged on a rotating shaft or a fan is provided. Small fan motors are also widely used.

  In this type of cooling device, it is an important technical problem to make the rotor fan driving device as small and thin as possible. Particularly in recent years, electronic devices such as OA devices are rapidly becoming smaller and thinner. Therefore, the rotor fan driving device of the cooling device used in this type of electronic equipment must also be reduced in size and thickness.

  On the other hand, there is a certain limit in terms of performance in the demand for smaller and thinner rotor fan drive devices. That is, electronic devices such as the above-described OA devices have a greater amount of heat generation year by year as the drive frequency becomes higher. On the other hand, the rotor fan drive device related to the fan blower of the cooling device has a structure in which the rotor fan is rotationally driven using a power device such as a small fan motor. Due to the wiring space for supplying the rotor, a useless portion that does not substantially contribute to the fan action is inevitably generated in the rotor fan driving device. This wasteful part has been an obstacle to improving the cooling effect, and has become an obstacle to miniaturization and thinning of the rotor fan driving device.

  As a conventional technique for reducing the size and thickness without reducing the cooling effect, Patent Document 1 describes that the rotor fan is pivotally supported at the center position so that the surface contour of the object to be cooled can be obtained. An ultra-thin fan motor comprising a heat plate having a contact surface matching the shape, and a fan motor mechanism comprising a frame-shaped magnet integrated with the rotor fan and a stator coil circuit board at a substantially outer peripheral position on the plate surface of the heat plate. Is disclosed.

  Patent Document 2 discloses a fan motor with an IC cooling heat sink that is integrated with an IC cooling heat sink and cools the IC by flowing cooling air directly on the surface of the heat sink. A fan motor with a heat sink for IC cooling, which is installed and driven from the outer peripheral side of a plurality of blades, is disclosed.

  However, in Patent Documents 1 and 2, it has been impossible to simultaneously reduce the size and thickness of the rotor fan drive device and improve the cooling effect of the electronic device. In particular, according to the structure in which a power device such as a motor is arranged on the rotating shaft of the rotor fan, it is possible to reduce the ineffective portion of the fan that occurs behind the power device and the wiring for supplying power to the power device. There is a limit to downsizing. Similarly, the rotor fan drive device is limited in thickness because it is limited by the thickness of the power unit.

  Moreover, in patent documents 1 and 2, since the shape of a rotating iron core (rotor magnetic core) is complicated in addition to a structure with many components, the positioning accuracy of a coil is bad and the reliability of a product is impaired, and also in a rotating iron core. There is a problem that the difficulty of the work of applying the winding hinders the improvement of the production efficiency and causes a high production cost.

  Furthermore, in Patent Documents 1 and 2, since a fixing portion for the outer frame member is not provided in the vicinity of the fan motor or the frame-shaped portion, sufficient mechanical strength can be ensured, and the rotor fan can be rotated stably. In other words, there is a problem that noise cannot be generated easily.

In addition, in the rotor fan driving device shown in Patent Documents 1 and 2, even if it is to be diverted to other applications, the motor, the coil substrate, and the electrode are provided in the vicinity of the rotation axis of the rotor fan, in the path, and in the flow path. Therefore, it cannot be easily used for ventilation and intake / exhaust liquids such as corrosive gas.
JP 2001-268847 A JP 2001-182699 A

  An object of the present invention is to provide a rotor fan driving device capable of reducing the overall shape and reducing the thickness, and a cooling device, a ventilating device, and a suction / drainage device including the rotor fan driving device.

  Another object of the present invention is to provide a rotor fan driving device having an excellent cooling ventilation effect, and a cooling device, a ventilation device, and an intake / exhaust liquid device provided with the rotor fan driving device.

  Still another object of the present invention is to provide a rotor fan driving device that can reduce manufacturing costs and construction costs, and a cooling device, a ventilating device, and an intake / exhaust liquid device including the rotor fan driving device. is there.

  In order to solve the above-described problem, a rotor fan driving device according to the present invention includes an outer frame member, a stator, and a rotor fan. The outer frame member has a fan rotation space.

  The stator includes a magnetic core and a winding, and is disposed at an interval around the fan rotation space of the outer frame member. The magnetic core has a front end facing the fan rotation space. The winding is wound around the magnetic core. The rotor fan includes a magnetic part, and is provided inside the fan rotation space of the outer frame member, and is rotationally driven by an interaction between a magnetic field applied from the stator and the magnetic part.

  The rotor fan driving device according to the present invention is mounted on a device that requires cooling and used as a cooling device. Moreover, the rotor fan drive device according to the present invention is mounted on a device that requires ventilation, and is used for a suction / drainage device. Furthermore, the rotor fan drive device according to the present invention is mounted on a device that requires liquid replacement, and is used in a suction / drainage device.

  The stator includes a magnetic core and a winding. The front end of the magnetic core faces the fan rotation space. The winding is wound around the magnetic core. The rotor fan includes a magnetic portion and is provided in the fan rotation space of the outer frame member. According to the above configuration, the magnetic field generated by supplying current to the stator windings is leaked from the front end of the magnetic core to the fan rotation space, and the electromagnetic interaction between the leakage magnetic field and the magnetic part of the rotor fan The rotor can be rotationally driven in a predetermined direction. The rotation driving principle may be either a moving magnetic field or a rotating magnetic field. Since the stator is disposed at intervals around the fan rotation space of the outer frame member, it is possible to generate the rotating magnetic field and the moving magnetic field as described above.

  As described above, in the rotor fan drive device according to the present invention, the rotor fan is rotationally driven by the interaction between the magnetic field applied from the stator and the magnetic part. That is, the rotor fan driving device can be reduced in size because no power device such as a motor is disposed on the rotating shaft of the rotor fan. Similarly, the rotor fan drive device does not include a power device such as a motor on the rotating shaft of the rotor fan, and thus can be reduced in thickness by eliminating the limitation due to the thickness of the power device.

  Furthermore, the rotor fan drive device according to the present invention does not include a power device such as a motor on the rotating shaft of the rotor fan, so that it is behind the power device and wiring for supplying power to the power device. The fan action invalid part can be reduced, and the fan action effective part can be relatively increased. Therefore, a cooling device using such a rotor fan drive device can ensure an excellent cooling effect even when it is downsized.

  Further, in the rotor fan drive device, since the stator is disposed at intervals around the fan rotation space of the outer frame member, the work of winding the winding around the outer periphery of the stator is facilitated, and the work efficiency is improved. It is possible to improve and reduce manufacturing costs. Similarly, power supply to the stator is facilitated.

  As a preferred aspect of the rotor fan drive device according to the present invention, the rotor fan includes a frame-shaped portion and a plurality of blades. The frame-like portion is ring-shaped and includes a magnetic portion. The plurality of blades are integrally provided inside the frame-like portion. According to this structure, the mechanical strength and driving efficiency of the rotor fan can be improved.

  As a preferred aspect of the rotor fan driving device according to the present invention, according to the structure in which the stator is arranged at a point-symmetrical position around the rotation axis of the rotor fan, the rotor fan can rotate smoothly and rotate at the time of startup. Stable without unevenness.

  As a preferred aspect of the rotor fan drive device according to the present invention, the outer frame member has a rectangular outer shape, and the stator is disposed at the corner of the outer frame member. According to the structure in which the outer shape of the outer frame member is a square shape, the fan action invalid portion can be reduced as much as possible, and the overall shape can be reduced in size and thickness while maintaining the cooling effect. In addition, according to the structure in which the stator is arranged at the corner of the outer frame member, the winding work can be facilitated, and the working efficiency can be improved and the cost can be improved. In addition, power supply from the outside becomes easy.

  As a preferred embodiment of the rotor fan drive device according to the present invention, the outer frame member includes a core housing hole, the core housing hole is open at least on one side, and the magnetic core is provided in the core housing hole through the opening. Since the applied magnetic field (leakage magnetic field) increases, the driving efficiency of the rotor fan driving device can be improved.

  As a preferred aspect of the rotor fan drive device according to the present invention, the magnetic core has a structure that is asymmetrical with respect to its own axis, or a structure having a protrusion protruding in the rotation direction at the front end facing the fan rotation space. Since the magnetic flux generated in the core is uneven when the power is supplied, the rotation direction of the rotor fan can be fixed at the start, and a circuit for fixing the rotation direction at the start can be eliminated. It is. Furthermore, smooth rotation of the rotor fan can be obtained.

  The rotor fan driving device according to the present invention is mounted on an electronic device or the like that requires heat dissipation, and is used in a cooling device that achieves a cooling effect by fan blowing. Similarly, the rotor fan driving device according to the present invention is mounted on a device that requires ventilation, is used in an intake / exhaust device, and is mounted on a device that requires liquid replacement, and is installed in an intake / exhaust liquid device. Used. Therefore, the cooling device, the intake / exhaust device, and the intake / exhaust fluid device described above have all the advantages of the rotor fan drive device according to the present invention.

  In addition, when diverting the rotor fan drive device for a cooling device, which has been mainly described so far, to an intake / exhaust device and an intake / exhaust fluid device, there is a particular problem related to the ventilation of corrosive gas, etc. performed by these devices, and the intake / exhaust fluid In the rotor fan drive device of the present invention, the inner frame member, that is, ventilation of corrosive gas, etc., and the construction of connecting a tube using corrosion-resistant resin to the inner wall of the intake / exhaust fluid path / flow path, can be simplified. Can be solved.

  Other objects, configurations and advantages of the present invention will be described in more detail with reference to the accompanying drawings. The accompanying drawings are merely examples.

  FIG. 1 is a perspective view of a rotor fan driving device according to an embodiment of the present invention, and FIG. 2 is an exploded perspective view of the rotor fan driving device shown in FIG. FIG. 3 is an enlarged front sectional view showing the structure of the stator of the rotor fan driving apparatus shown in FIGS. 1 and 2.

  Referring to FIGS. 1 and 2, the rotor fan driving device includes an outer frame member 10, a stator 20, and a rotor fan 30. The outer frame member 10 has a substantially square shape, has a thickness dimension D1, and has a fan rotation space 100. The outer frame member 10 is preferably made of a resin molded body.

  Further, the outer frame member 10 includes a core storage hole 15. The core housing hole 15 shown in the figure is a through-hole and opens on both the outer peripheral surface of the outer frame member 10 and the inner peripheral surface of the fan rotation space 100.

  The stator 20 is preferably formed integrally with the outer frame member 10, and is arranged around the fan rotation space 100 of the outer frame member 10 with a space therebetween. In the illustrated embodiment, the stator 20 is disposed at the corner of the outer frame member 10. Furthermore, it is preferable that the stator 20 is disposed at a position symmetrical with respect to the rotation axis of the rotor fan 30 in the outer frame member 10.

  Each of the stators 20 includes a winding 21 and a magnetic core 22. Winding 21 is a wire. The winding 21 is wound around the magnetic core 22 at the constricted portion on the outer periphery of the stator 20. The magnetic core 22 is preferably a ferrite core made of a soft magnetic material, and is provided in the core housing hole 15 through the opening described above, and the front end faces the fan rotation space 100.

  Rotor fan 30 has a thickness dimension D2. The thickness dimension D1 of the outer frame member 10 is designed to be approximately equal to the thickness dimension D2 of the rotor fan 30 and has a shape that can be rotated when fitted into the fan rotation space 100 of the outer frame member 10. More specifically, the illustrated rotor fan 30 includes a plurality of blades 32, a magnetic portion, and a ring-shaped frame portion 31.

  The plurality of blades 32 are integrated with each other. Further, although not necessarily clear from the drawings, the frame-shaped portion 31 and the plurality of blades 32 are integrally provided.

  The rotor fan 30 has a through hole 320 for holding a fixed shaft in the rotating shaft core portion. However, the method of supporting the rotor fan 30 so as to be rotatable at the center position is not particularly limited. Depending on the application, it is possible to freely design a rotating shaft support or a method of installing a support portion on the outer peripheral side of the rotor fan 30.

  The magnetic part is provided in the frame-shaped part 31, the blade | wing 32, or another part. In the rotor fan 30 shown in FIGS. 1 and 2, the frame-like portion 31 is configured by a plastic magnet, and a state in which the frame-like portion 31 is arranged in a ring shape at the outer peripheral position of the plurality of blades 32 is shown. Thereby, the weight of the rotor fan 30 can be reduced and the driving efficiency can be improved. In the drawing, the drive circuit board is omitted. Whether the drive circuit board is included in another circuit board, disposed in the vicinity of the rotor fan drive device 1, or casing with the rotor fan drive device 1 is a design matter.

  The rotor fan driving device 1 supplies power (not shown) to the winding 21 of the stator 20 from the outside, and the rotor fan 30 provided in the fan rotation space 100 of the outer frame member 10 is applied from the stator 20. Is rotated by electromagnetic interaction between the magnetic field and the magnetic part included in the rotor fan. This point will be described with reference to FIG.

  FIG. 4 is a diagram for explaining the flow of magnetic flux generated in the stator of the rotor fan driving apparatus shown in FIGS. Referring to FIG. 4, in the rotor fan driving device shown in FIGS. 1 to 3, the outer frame member 10 is made of resin, and the stator 20 includes the magnetic core 22, so that the applied magnetic field X (leakage magnetic field) increases. For this reason, the drive efficiency is improved. Incidentally, in the example used for the cooling device, the cooling effect was improved by about 40%. Furthermore, the weight can be further reduced by configuring the magnetic core 22 with a composite magnetic material using a ferrite resin. Specifically, the magnetic core 22 using a ferrite resin can achieve a weight reduction of about 30% and an improvement in driving efficiency as compared with the case where a silicon steel plate is used.

  On the other hand, FIG.5 and FIG.6 is a figure which shows the flow of the magnetic flux which generate | occur | produces in the stator which concerns on a prior art. In the rotor fan driving device shown in FIG. 5, the entire outer frame member 10 is made of a soft magnetic material. According to the structure described above, the stator 20 has a configuration close to a closed magnetic circuit. For this reason, the applied magnetic field (leakage magnetic field) indicated by the arrow X is small with respect to the rotor fan 30, and the driving efficiency of the rotor fan 30 cannot be improved.

  Further, as shown in FIG. 6, in the structure in which the outer frame member 10 is made of resin and the stator 20 is an air-core coil, the applied magnetic field X (leakage magnetic field) is reduced, so that the driving efficiency of the rotor fan 30 is improved. Can not do it.

  FIG. 7 is a view showing a fan action effective part and an ineffective part of the rotor fan driving apparatus shown in FIGS. 1 and 2, and FIG. 8 is a fan action effective part and an ineffective part of a rotor fan drive apparatus according to the prior art. FIG.

  Referring to FIG. 8, in a conventional rotor fan driving device, when used in a cooling device, the fan is driven by a power device such as a brushless motor or a small axial fan motor. According to the above-described structure, the portion that is shaded by the installation space of the power unit and the portion that is shaded by wiring for supplying power to the power unit is the fan action invalid portion Z of the cooling device. Since the fan action invalid part Z restricts the fan action effective part Y, it is difficult to achieve a reduction in size and thickness of the cooling device while maintaining a cooling effect. In addition, since the rotating iron core 7 to be used has a complicated shape, it is difficult to perform winding on the rotating iron core 7, and the manufacturing cost cannot be reduced.

  On the other hand, referring to FIG. 7, in the rotor fan driving apparatus shown in FIGS. 1 and 2, the stator 20 is arranged around the fan rotation space 100 with a space therebetween, and the winding 21 is connected to an external power source ( (Not shown) is supplied, the rotor fan 30 is rotationally driven by the electromagnetic interaction between the magnetic field applied from the stator 20 and the magnetic part of the rotor fan 30. That is, the basic structure of the rotor fan driving device 1 shown in FIGS. 1 and 2 includes a rotor fan 30 that does not directly have a power device such as a brushless motor or a small axial fan motor, a stator 20, and an outer frame member 10. The rotor fan 30 having a magnetic portion is magnetically rotated by the applied magnetic field X from the stator 20.

  According to the above-described structure, the rotor fan drive device 1 does not need to secure an installation space for the power device because the power device is not disposed on the rotating shaft of the rotor fan 30. Therefore, the rotor fan drive device 1 can be reduced in size.

  Moreover, since the rotor fan drive device 1 does not arrange a power unit on the rotating shaft of the rotor fan 30, there is no limitation due to the thickness of the power unit. Therefore, the rotor fan drive device 1 can be thinned. For example, a structure in which the thickness of the rotor fan drive device 1 that is difficult in the past can be 10 mm or less can be achieved without any problems.

  Further, when the rotor fan drive device 1 is used in a cooling device, it is not necessary to drive the fan by a power unit, so that the fan action invalid portion Z is reduced and a relatively large fan action effective portion Y is secured. It becomes possible. Therefore, the cooling device 1 using such a rotor fan drive device can ensure an excellent cooling effect even when the size is reduced and the thickness is reduced.

  As is apparent from the above description, according to the rotor fan drive device of the present invention, it is possible to simultaneously achieve the demand for downsizing and thinning of the device and the improvement of the cooling effect. Therefore, the rotor fan driving device 1 can be used for a cooling device such as a notebook personal computer as well as a portable communication device terminal which has recently been remarkably reduced in size and thickness.

  Since the rotor fan drive device 1 does not need to drive the fan by the power unit, it can ensure a high degree of freedom with respect to the shape of the rotor fan 30 and its fixing method.

  In the rotor fan drive device 1, the stator 20 is arranged around the fan rotation space 100 of the outer frame member 10 at an interval, so that the work of winding the winding 21 around the stator 20 is facilitated and the work efficiency is improved. It is possible to improve and reduce manufacturing costs. Further, the positioning accuracy of the coil 8 is improved, and stable manufacturing is facilitated. In addition, the rotor fan drive device 1 can easily supply power from the outside due to the structure in which the stator 20 is provided at the corner of the outer frame member 10.

  The rotor fan drive device 1 is an excellent machine because the rotor fan 30 includes a ring-shaped frame portion 31 and the plurality of blades 32 are integrally provided inside the frame-shaped portion 31. In addition, the driving efficiency is improved.

  In the rotor fan driving device 1, the stator 20 is arranged in a point-symmetrical position around the rotation axis of the rotor fan 30 in the outer frame member 10, so that the rotor fan 30 can be smoothly rotated and rotated at startup. Starts stably without causing unevenness.

  When the outer frame member 10 has a structure in which the outer shape of the outer frame member 10 is a square shape, in particular, a substantially square shape, the rotor fan drive device 1 can efficiently achieve a fan action effective portion. Therefore, the cooling device using such a rotor fan driving device 1 can be reduced in size and thickness while maintaining the cooling effect. In addition, according to the structure in which the stator 20 is arranged at the corner of the outer frame member 10, the winding work is facilitated, so that the production efficiency can be improved and the production cost can be reduced. In addition, power supply from the outside becomes easy.

  In the rotor fan driving device 1, when the outer frame member 10 includes the core housing hole 15 and the magnetic core 22 is provided in the core housing hole 15 through the opening, the applied magnetic field (leakage magnetic field) increases. Efficiency gains can be achieved.

  FIG. 9 is an exploded perspective view of another embodiment of the rotor fan drive device according to the present invention. As shown in the figure, the rotor fan drive device includes two frame-shaped portions 31 having a plurality of blades 32 and one not having the plurality of blades 32, and only the frame-shaped portion 31 having no plurality of blades 32 is constituted by a plastic magnet. May be.

  Furthermore, the material selection and specific arrangement of the magnet with respect to the rotor fan 30 are determined as necessary. For example, the frame-shaped portion 31 may not be formed of a plastic magnet, and may be arranged at an optimal position such as by embedding or pasting a plastic magnet inside the plurality of blades 32 as necessary.

  FIG. 10 is a front view showing another embodiment of the magnetic core used in the rotor fan driving device according to the present invention, and FIG. 11 is a part of the rotor fan driving device using the magnetic core shown in FIG. It is front sectional drawing shown. The magnetic core 22 shown in FIGS. 10 and 11 has a protruding portion 220 protruding in the rotational direction at the front end, and is asymmetrical with respect to its own axis. According to the above structure, the generated magnetic flux X is not uniform left and right, so that the rotation direction when the rotor fan 30 is started can be fixed in one direction, and the rotor fan 30 can be started smoothly.

  12 is a front view showing still another embodiment of the magnetic core used in the rotor fan driving device according to the present invention, and FIG. 13 is a part of the rotor fan driving device using the magnetic core shown in FIG. It is front sectional drawing abbreviate | omitted and shown.

  FIG. 14 is a front view showing still another embodiment of the magnetic core used in the rotor fan driving device according to the present invention. FIG. 15 is a diagram of the rotor fan driving device using the magnetic core shown in FIG. It is front sectional drawing which abbreviate | omits a part and shows.

  The magnetic core 22 shown in FIGS. 12 to 15 has a protrusion 220 protruding in the rotational direction at the front end, and is asymmetrical with respect to its own axis. According to the above structure, the generated magnetic flux X is not uniform left and right, so that the rotation direction when the rotor fan 30 is started can be fixed in one direction, and the rotor fan 30 can be started smoothly.

  The above-described rotor fan driving device is used in a cooling device such as an electronic device in combination with an external cover, an external power source, or the like. 16 is a perspective view of a cooling device using the rotor fan driving device according to the present invention, and FIG. 17 is an exploded perspective view of the cooling device shown in FIG.

  The illustrated cooling device includes a rotor fan driving device 1, external covers 4 and 5, and a fixed shaft 6. The rotor fan drive device 1 has been described with reference to FIGS. 1 to 3, and the same reference numerals are given to the same components as those already described. The outer covers 4 and 5 have through-hole portions 40 and 50. The external covers 4 and 5 are well-known components in the technical field, and thus description thereof is omitted. The fixed shaft 6 is provided in the through holes 320 of the plurality of blades 32, and rotatably supports the rotor fan 30.

  FIG. 18 is a perspective view of a ventilation device or a suction / drainage device using a rotor fan drive device according to an embodiment of the present invention, and FIG. 19 is an exploded perspective view of the ventilation device or the suction / drainage device shown in FIG. The rotor fan driving device 1 has been described with reference to FIGS. 1 to 3. Therefore, the intake / exhaust device or the intake / exhaust fluid device has all the advantages of the rotor fan drive device 1 described above. The intake / exhaust device uses the fan action of the rotor fan 30 for the purpose of ventilation, and the intake / exhaust liquid device uses the fan action of the rotor fan 30 for the purpose of liquid replacement.

  In the prior art, when the rotor fan driving device is diverted to a ventilating device such as a corrosive gas other than cooling or an intake / exhaust liquid device, the rotor fan driving device substantially rotates the rotor fan 30 with its motor or coil substrate and electrodes. Because it is in the vicinity of the shaft, in the path, and in the flow path, it could not be easily used for ventilation of corrosive gas, etc.

  The rotor fan driving device according to the present invention is constituted by a unit of a rotor fan 30 that does not directly have a power device such as a brushless motor or a small axial fan motor, a stator 20, and an outer frame member 10. The rotor fan 30 is rotationally driven magnetically by the applied magnetic field X. Therefore, the rotor fan drive device does not have its motor or coil substrate and electrode in the vicinity of the rotation axis of the rotor fan 30 and in the path and flow path, so it can be easily used for ventilation and intake / exhaust liquids such as corrosive gas. be able to.

  Further, as a specific mode in the case of diverting to a ventilation device or a suction / exhaust fluid device, the rotor fan driving device 1 is provided inside the outer frame member 10, that is, on the inner wall of the ventilation, suction / exhaust fluid path or flow path of corrosive gas or the like. If the tubes 10 and 11 using a corrosion-resistant resin or the like are connected, it can be easily handled and diverted.

  Therefore, the rotor fan driving device 1 according to the present invention is placed on a device that requires ventilation and is placed on a ventilation device that ventilates by fan ventilation or a device that requires liquid replacement. Thus, the liquid can be easily diverted to a liquid suction / drainage device that replaces liquid.

  Although the contents of the present invention have been specifically described above with reference to the preferred embodiments, it is obvious that those skilled in the art can take various modifications based on the basic technical idea and teachings of the present invention. It is.

It is a perspective view of the rotor fan drive device concerning one embodiment of the present invention. It is a disassembled perspective view of the rotor fan drive device shown in FIG. FIG. 3 is a front sectional view showing the stator structure of the rotor fan driving device shown in FIGS. 1 and 2 with a part thereof omitted. It is a figure which shows the flow of the magnetic flux which generate | occur | produces in the stator shown in FIG. It is a figure which shows the flow of the magnetic flux which generate | occur | produces in the stator which concerns on a prior art. It is a figure which shows the flow of the magnetic flux which generate | occur | produces in the stator which concerns on a prior art. It is a figure which shows a fan effect | action effective part and an invalid part about the rotor fan drive device which concerns on one Embodiment of this invention. It is a figure which shows a fan effect | action effective part and an invalid part about the rotor fan drive device which concerns on a prior art. It is a disassembled perspective view of another embodiment about the rotor fan drive device which concerns on this invention. It is a front view which shows another embodiment about the magnetic core used for the rotor fan drive device which concerns on this invention. It is front sectional drawing which abbreviate | omits and shows the rotor fan drive device using the magnetic core shown in FIG. It is a front view which shows another embodiment about the magnetic core used for the rotor fan drive device which concerns on this invention. It is front sectional drawing which abbreviate | omits and shows the rotor fan drive device using the magnetic core shown in FIG. It is a front view which shows another embodiment about the magnetic core used for the rotor fan drive device which concerns on this invention. It is front sectional drawing which abbreviate | omits and shows a part about the rotor fan drive device using the magnetic core shown in FIG. It is a perspective view of the cooling device using the rotor fan drive device concerning one embodiment of the present invention. It is a disassembled perspective view of the cooling device shown in FIG. It is a perspective view of the ventilation apparatus or the suction / drainage apparatus using the rotor fan drive device which concerns on one Embodiment of this invention. It is a disassembled perspective view of the ventilation apparatus or the suction / drainage apparatus shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Rotor fan drive device 10 Outer frame member 100 Fan rotation space 15 Core accommodation hole 20 Stator 21 Winding 22 Magnetic core 220 Protrusion 30 Rotor fan 31 Frame-shaped part 32 Plural blades

Claims (8)

A rotor fan driving device including an outer frame member, a plurality of stators, and a rotor fan,
The outer frame member has a rectangular outer shape, and has a core housing hole and a fan rotation space,
The core storage hole is disposed at a corner, and at least one surface side is open,
The plurality of stators each include a magnetic core and a winding, and are disposed outside the corner portion and spaced apart from each other.
The magnetic core is provided in the core housing hole through the opening, and a front end faces the fan rotation space,
The winding is wound around the magnetic core;
The rotor fan includes a magnetic part, is provided inside the fan rotation space of the outer frame member, and is rotationally driven by the interaction between the magnetic field applied from the stator and the magnetic part.
Rotor fan drive device. The rotor fan driving device according to claim 1, wherein the rotor fan includes a frame-shaped portion and a plurality of blades.
The frame-shaped part is ring-shaped and includes a magnetic part,
The plurality of blades are integrally provided inside the frame-shaped portion,
Rotor fan drive device. A rotor fan driving device according to claim 1 or 2,
The stator is disposed at a point-symmetrical position around the rotation axis of the rotor fan.
Rotor fan drive device. A rotor fan driving apparatus according to any one of claims 1 to 3, wherein the rotor fan driving apparatus according to any one of claims 1 to 3 ,
The magnetic core has an asymmetric shape with respect to its own axis.
Rotor fan drive device. The rotor fan drive device according to claim 4 , wherein
The magnetic core has a protruding portion that protrudes in the rotational direction at the front end.
Rotor fan drive device. A cooling device including a rotor fan driving device and equipment requiring cooling,
The rotor fan driving device is the one described in any one of claims 1 to 5 , and is mounted on the device.
Cooling system. A ventilation device including a rotor fan drive device and a device requiring ventilation,
The rotor fan driving device is the one described in any one of claims 1 to 5 , and is mounted on the device.
Ventilation device. A suction / drainage device including a rotor fan driving device and a device that requires liquid replacement,
The rotor fan driving device is the one described in any one of claims 1 to 5 , and is mounted on the device.
Intake and drainage device.

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