JP5459075B2 - Fan unit and equipment - Google Patents

Description

  This case relates to a fan unit and a device in which the fan unit is mounted.

  Various devices are equipped with fan units for internal air cooling. There are various sizes of fan units, but the size of the fan unit is often determined in advance regardless of the size of the apparatus. For this reason, for example, when there is a margin in the horizontal dimension of the apparatus but there is no margin in the vertical direction, a fan unit having a size commensurate with the vertical dimension is mounted. In addition, when the device size is slightly insufficient to mount a fan unit having a higher size, there may be a situation where a fan unit having a size smaller than that of the device size must be mounted while leaving a margin in the device size.

  Here, if the inside of the apparatus is sufficiently air-cooled with a small fan unit, it is necessary to ensure a sufficient air volume for air cooling and to rotate the blades of the fan unit at high speed. When the blades of the fan unit are rotated at a high speed, noise due to the rotation of the blades increases, and the fan unit may have a short life.

  In addition, there is an example in which a large fan unit is mounted obliquely and mounted in a unique shape such as to protrude from the outer shape, but there is a risk that the mounting area will be reduced and the device outer shape design will be adversely affected.

  Here, in the ceiling fan, it has been proposed to increase the air volume by extending the blades radially when the blades rotate.

  Further, there has been proposed a structure in which a motor structure is provided between the front end portion of the blade and an annular frame facing the front end portion, and a driving force is directly applied to the blade.

  In addition, a structure for expanding and contracting a fan outlet is shown in a cooling device for a computer.

  However, these structures are independent of effectively using the size of the device to increase airflow.

JP 2007-247573 A International Publication WO2006 / 011626 JP 2001-55995 A JP 2003-280769 A

  The subject of the fan unit and apparatus of this indication is providing the fan unit which can match a dimension with the dimension of an apparatus, and the apparatus by which such a fan unit is mounted.

  The fan unit of this indication has a motor part, a wing part, and a frame.

  Here, the motor unit has a motor.

  Further, the blade portion extends radially from the motor portion and can be freely expanded and contracted in the radial direction, and is rotated by the rotation of the motor.

  Further, the frame body has an opening for exposing the blade portion, and is divided into a plurality of frame portions so that the plurality of frame portions are arranged in a direction around the motor portion, and the plurality of frame portions are accompanied by expansion / contraction of the opening. It has a structure that can move in the direction of contact with and away from each other.

  Further, the device disclosed herein is characterized in that the fan unit disclosed herein is mounted.

  According to the fan unit and device of the present disclosure, both the blade portion and the frame of the fan unit can be matched to the size of the device. Therefore, it is possible to effectively utilize the dimensions of the apparatus, and to send the air with the air volume corresponding to the dimensions of the apparatus, thereby reducing noise and extending the life.

It is a figure which shows an example of the conventional fan unit. It is a figure which shows the fan unit of 1st Embodiment of this case. It is a figure which shows the fan unit of 1st Embodiment of this case. It is an exploded view of the fan unit of 2nd Embodiment of this case. It is an external appearance perspective view of one frame part which comprises the frame shown in FIG. It is a figure which shows the flame | frame part shown in FIG. It is the figure which showed the state cut along the arrow XX of FIG. It is the figure which showed the state which removed the upper cover of the flame | frame part from the state shown in FIG. It is the figure which showed the state which pulled out the fixing | fixed part from the state shown in FIG. It is the figure which showed 1 sheet of the blade part extended radially from the motor part and its motor part. It is the figure which showed the fin guide. It is the figure which showed only the part of a frame guide stick | rod near a fixed part. It is the figure which showed the state which the guide part of the fin guide entered into the guide groove. It is a perspective view of the arm which connects a frame guide rod and a motor part. It is the figure which showed the arm of the state fixed to the fixing | fixed part of the frame guide rod. It is a schematic diagram of the apparatus carrying a fan unit.

  Hereinafter, this embodiment will be described with a comparative example.

  FIG. 1 is a diagram illustrating an example of a conventional fan unit. The fan unit shown in FIG. 1 corresponds to a comparative example to be compared with the present embodiment.

  The fan unit 10 includes a motor unit 11, a blade unit 12, and a frame body 13.

  The frame 13 has an opening 13 a that exposes the blade 12. The motor unit 11 is placed in the center of the opening 13a and supported by the frame 13 by a plurality of arms 13b. The motor unit 11 incorporates a motor (not shown). The blade 12 extends radially from the motor unit 11 and rotates as the motor rotates. The frame body 13 is provided with screw holes 13c at the four corners thereof, and the fan unit 10 is fixed by using these screw holes 13c.

  Here, consider mounting the fan unit 10 in the apparatus. When the vertical dimension of the device is a marginal dimension for mounting the fan unit 10, a fan unit larger than the fan unit 10 should be mounted even if there is a margin in the horizontal dimension of the device. I can't. Even if there is some margin in both the vertical and horizontal dimensions of the device, if there is not enough dimensions to mount a fan unit that is one size larger than this fan unit 10, this size Only the fan unit 10 can be mounted. In these cases, it is necessary to secure a predetermined air volume using the small fan unit 10, which requires high-speed rotation, which may cause noise and a short life.

  2 and 3 are views showing the fan unit according to the first embodiment of the present invention. Here, FIG. 2 is a diagram showing a state in which the fan unit 20 is contracted to the minimum size, and FIG. 3 is a diagram showing a state in which the size is expanded in the horizontal direction while maintaining the minimum size in the vertical direction.

  The fan unit 20 includes a motor unit 21, a blade unit 22, and a frame body 23. The motor unit 21 has a motor (not shown). The blade portion 22 extends radially from the motor portion 21 and rotates as the motor rotates. The frame body 23 has an opening 23 a for exposing the blade portion 22. Further, the frame body 23 is divided into a plurality (four in this case) of frame portions 231 in a direction around the motor portion 21. Each frame portion 231 is formed with a screw hole 23b for screwing the fan unit 20 to a device (not shown). A frame guide rod 232 is inserted into each frame portion 231, and each frame portion 231 is supported by the inserted frame guide rod 232. A total of four frame guide bars 232 are arranged one by one on the top, bottom, left and right of the fan unit 20. An arm 233 extends between each frame guide rod 232 and the motor unit 21, and the motor unit 21 is supported by a total of four arms 233. Each arm 233 has two fixed arms, a hollow frame side fixed arm 233a fixed to the frame guide rod 232 and a hollow motor side fixed arm 233b extending from the motor unit 21 side. Each arm 233 has a movable arm 233c inserted into and connected to both the frame side fixed arm 233a and the motor side fixed arm 233b.

  The blade portion 22 is fixed to the motor portion 21 and is supported by a plurality of (here, seven) fixed fins 22a that rotate according to the rotation of a motor (not shown) in the motor portion 21, and each fixed fin 22a. The movable fin 22b is movable in the radial direction.

  A guide rail 234 is provided in the frame 23 at a position adjacent to the opening 23a. The guide rail 234 includes a fixed guide rail 234a formed on the four frame portions 231 and a movable guide rail 234b that is movable into the fixed guide rail 234a. The movable guide rail 234b has flexibility, a portion that enters the fixed guide rail 234a bends along a curve of the fixed guide rail 234a, and a portion exposed from the fixed guide rail 234a extends substantially linearly (see FIG. 3).

  In addition, a guide pin 221 that is movably locked to the guide rail 234 is provided at the tip of the movable fin 22 b that constitutes the blade portion 22.

  The fan unit 20 has the above-described structure. When the frame portion 231 is pulled left and right from the state shown in FIG. 2, the state becomes as shown in FIG. That is, in FIG. 3, compared with FIG. 2, the frame part 231 slides to the left and right, and accordingly, the two upper and lower movable guide rails 234b are pulled out from the fixed guide rail 234a. In FIG. 3, the left and right movable arms 233c are pulled out from the frame-side fixed arm 233a and the motor-side fixed arm 233b.

  As shown in FIG. 3, the fan unit 20 can be fixed to the apparatus and rotated while being pulled left and right. In this case, the movable fin 22b constituting the blade portion 22 is guided by the guide rail 233 and rotates while going in and out of the fixed fin 23a.

  When the fan unit 20 is rotated in the state of FIG. 3, the air volume is increased at the same rotational speed as compared with the case of rotating in the state of FIG. 2 and the case of rotating the fan unit 10 of the comparative example shown in FIG. Efficient air cooling can be performed. Or when ensuring a fixed air volume, a rotation speed can be lowered | hung and a noise can be reduced.

  Although FIG. 3 shows a state where the fan unit 20 is extended only to the left and right, the fan unit 20 can be similarly extended in the vertical direction. If there is room in the device mounting space and the fan unit 20 is extended to the left and right and up and down, the air volume can be further increased at the same rotational speed, or the rotational speed can be further decreased while ensuring the same air volume. it can.

  FIG. 4 is an exploded view of the fan unit according to the second embodiment of the present application.

  The fan unit 30 shown in FIG. 4 includes a motor unit 31, a blade unit 32, and a frame body 33. In this FIG. 4, the state which decomposed | disassembled the frame 33 for every part is shown.

  The motor unit 31 has a motor (not shown).

  The blade part 32 extends radially from the motor part 31 and rotates as the motor rotates. The blade 32 includes a fixed fin 32a on the motor unit 31 side and a movable fin 32b supported by the fixed fin 32a and movable in the radial direction. A long hole 32c is formed at the tip of the movable fin 32b. A fin guide 321 (see FIG. 11, not shown in FIG. 4) that is slidably engaged with a guide rail described later is fitted in the elongated hole 32 c. Details will be described later.

  The frame 33 has a plurality of (here, four) frame portions 331. Each frame portion 331 has an inner edge 331a that defines an opening through which the blade portion 32 is exposed, and a guide rail 334 at a position adjacent to the inner edge 331a. The guide rail 334 includes a fixed guide rail fixedly formed on each frame portion 331 and a movable guide rail slidably supported by the fixed guide rail, details of which will be described later. Further, the frame 33 has a frame guide bar 332. A total of four frame guide bars 332 are arranged one by one on the top, bottom, left and right of the fan unit 30. Two frame guide rods 332 are inserted into each frame portion 331, and each frame portion 331 is supported by each of these two frame guide rods 332.

  Each arm 333 is disposed between each frame guide bar 332 and the motor unit 31. Each arm 333 includes a frame-side fixed arm 333a, a motor-side fixed arm 333b, and a movable arm 333c. The movable arm 333c is slidably inserted into both the frame side fixed arm 333a and the motor side fixed arm 333b, and connects the fixed arms 333a and 333b. The frame side fixing arm 333a of each frame guide bar 332 is fixed to the fixing part 332a of the frame guide bar 332 by welding or the like. The motor side fixing arm 333b of each frame guide bar 332 is fixed to the hatched portion 31a of the motor unit 31 by welding or the like.

  Hereinafter, the detailed structure of each part of the fan unit 30 of the second embodiment shown in FIG. 4 will be described.

  FIG. 5 is an external perspective view of one frame portion 331 constituting the frame 33 shown in FIG.

  FIG. 5 shows one frame portion 331, two frame guide bars 332 that slidably support the frame portion 331, and two movable guide rails 334b. Each frame guide bar 332 includes two guide bars 332b and 332c, and the fixing portion 332a holds the two guide bars 332b and 332c at a predetermined distance from each other. The fixed portion 332a also holds one end of the movable guide rail 334b.

  FIG. 6 is a diagram showing the frame portion shown in FIG. However, FIG. 6 shows a state where one of the two pairs of the frame guide bar 332 and the movable guide rail 334b shown in FIG. 5 is removed.

  FIG. 7 is a diagram showing a state of being cut along the arrow XX in FIG.

  In FIG. 6, the frame guide bar 332 and the movable rail 334 b shown in FIG. 5 are accommodated in the frame portion 331, and the fixed portion 332 a is in contact with the frame portion 331. Further, here, a fixed guide rail 334a is shown, and further, an accommodation groove 335 (see FIG. 7) for accommodating the frame guide bar 332 (see FIG. 5) is shown.

  FIG. 8 is a view showing a state where the upper cover of the frame portion is removed from the state shown in FIG. Further, FIG. 9 is a view showing a state in which the fixing portion 332a is pulled out from the state shown in FIG. However, in FIG. 8, the movable guide rail 334b and the frame guide bar 332 are also shown on the cross-sectional side. On the other hand, FIG. 9 shows a state where the movable guide rail 334b and the frame guide bar 332 are removed from the cross section side.

  The frame guide bar 332 is slidably accommodated in the accommodation groove 335 (see FIG. 9), and slides between the accommodated state shown in FIG. 8 and the pulled-out state shown in FIG. Further, the movable guide rail 334b has a protrusion 334e, and this protrusion 334e enters and is supported by the long groove 334f of the fixed guide rail 334a. Between the retracted state shown in FIG. 8 and the pulled-out state shown in FIG. Slide. The movable guide rail 334b has a certain degree of flexibility, a portion overlapping the fixed guide rail 334a is curved along the curve of the fixed guide rail 334a, and a portion drawn from the fixed guide rail 334a is substantially linear. It will be in the state extended to. Two guide grooves 334c are formed on the back side of the fixed guide rail 334a. A fin guide 321 (see FIG. 11) at the tip of the movable fin 32b constituting the blade portion 32 is guided by entering the guide groove 334c. The detailed structure will be described below.

  FIG. 10 is a view showing one of the motor part and the blade part 32 extending radially from the motor part. The blade portion 32 includes a fixed fin 32a and a movable fin 32b. The movable fin 32b is supported by the fixed fin 32a so as to be slidable in the radial direction by a guide member 32d. The movable fin 32b has a hole 32c at the tip. The hole 32c at the tip is a long hole that is long in the radial direction.

  FIG. 11 is a view showing the fin guide.

  The fin guide 321 enters a hole 32c formed in the tip end portion of the movable fin 32b constituting the blade portion 32 (see FIG. 10), and has a shaft portion 321a having an oval cross section and radial directions from both ends of the shaft portion 321a. And a pair of guide portions 321c extending in a direction approaching each other from the tip of the arm portion 321b.

  FIG. 12 is a diagram showing only a portion of the frame guide bar 332 in the vicinity of the fixed portion 332a. Here, a guide groove 334c (see also FIG. 8 and FIG. 9) into which the guide portion 321c of the fin guide 321 shown in FIG. 11 enters is shown.

  FIG. 13 is a view showing a state where the guide portion 321c (see FIG. 11) of the fin guide 321 enters the guide groove 334c.

  The guide groove 334c is continuous over one turn both in the housed state shown in FIG. 8 and in the pulled-out state shown in FIG. Therefore, when the motor of the fan unit 30 (see FIG. 4) rotates, the blade portion 32 rotates while the guide portion 321c of the fin guide 321 is guided by the guide groove 334c.

  FIG. 14 is a perspective view of the arm 333. 14A shows a contracted state, and FIG. 14B shows an extended state.

  The arm 333 includes a frame side fixed arm 333a, a motor side fixed arm 333b, and a movable arm 333c. The frame side fixed arm 333a and the motor side fixed arm 333b have receiving grooves 333d and 333e for receiving the movable arm 333c, and the movable arm 333c is slidably received in the receiving grooves 333d and 333e. The movable arm 333c has flange portions 333f formed at both ends thereof. When the movable arm 333c is extended to the maximum extent, the flange portions 333f are locked to the fixed arms 333a and 333b to prevent the movable arm 333c from coming off.

  FIG. 15 is a view showing the arm 333 fixed to the fixing portion 332 a of the frame guide bar 332.

  The frame side fixing arm 333a constituting the arm 333 is firmly fixed to the fixing portion 332a of the frame guide rod 332 by welding or adhesion. The motor side fixed arm 333b constituting the arm 333 is firmly fixed to the hatched portion of the motor unit 31 shown in FIG.

  In the fan unit 30 of the second embodiment, the vertical and horizontal dimensions can be changed independently and freely as in the fan unit 20 (see FIGS. 2 and 3) of the first embodiment. Therefore, the fin length of the blade portion 32 is extended in the expanded state, and the air volume can be increased at the same rotation speed, while the rotation speed can be decreased while ensuring the same air volume.

  FIG. 16 is a schematic diagram of an apparatus equipped with a fan unit. FIG. 16A shows a comparative example in which the conventional fan unit 10 shown in FIG. 1 is mounted. On the other hand, FIG. 16B shows an embodiment of an apparatus equipped with a fan unit according to an embodiment of the present invention (here, the fan unit 20 of the first embodiment shown in FIGS. 2 and 3).

  Here, it is assumed that the device 40 is the same device except for the fan units 10 and 20. The air sucked from the fan units 10 and 20 flows through the inside of the device 40 along the arrows shown in the figure, and is exhausted from the exhaust ports 41 and 42.

  A conventional fan unit 10 shown in FIG. 16A is a square fan unit that is limited by the height dimension of the device 40 and has the height dimension of one side.

  On the other hand, the fan unit 20 of the embodiment shown in FIG. 16 (B) is limited by the height dimension of the device 40 in the height direction, but has a margin in the lateral dimension of the device 40 and is stretched horizontally ( (See FIG. 3). For this reason, when the fan unit 10 of FIG. 16A and the fan unit 20 of FIG. 16B are rotated at the same rotational speed, as indicated by the thickness of the arrows in FIGS. In FIG. 16B, the air volume increases, and the inside of the apparatus 40 can be efficiently air-cooled. Alternatively, when the same air volume as in FIG. 16A is sufficient, the rotational speed can be reduced in FIG. 16B to reduce noise and extend the life of the fan unit 20.

  As described above, according to each embodiment of the present case, it is possible to reduce noise by the fan unit and extend the life of the fan unit.

10, 20, 30 Fan unit 11, 21, 31 Motor part 12, 22, 32 Blade part 13, 23, 33 Frame 13a, 23a Opening 13b, 232, 233, 333 Arm 13c, 23b Screw hole 22a, 32a Fixing fin 22b, 32b Movable fin 32c Hole 32d Guide member 40 Device 41, 42 Exhaust port 231,331 Frame portion 221 Guide pin 232,332 Frame guide rod 233,333 Arm 233a, 333a Frame side fixed arm 233b, 333b Motor side fixed arm 233c , 333c Movable arm 234, 334 Guide rail 234a, 334a Fixed guide rail 234b, 334b Movable guide rail 321 Fin guide 331a Inner edge 332a Fixed part 335 Housing groove 334c Guide groove 33 e long grooves 334f ridge

Claims (4)

A motor unit having a motor;
A blade portion extending radially from the motor portion and freely extending and contracting in a radial direction and rotating by rotation of the motor;
It has an opening for exposing the blade portion, and is divided into the plurality of frame portions so that the plurality of frame portions are arranged in a direction around the motor portion, and the plurality of frame portions are mutually connected with expansion and contraction of the opening. A fan unit comprising a frame that is movable in a direction of contact and separation. The frame body has a rail portion that expands and contracts with the movement of the plurality of frame portions, surrounds the opening over a circumference, and guides the blade portion when the motor rotates,
The fan unit according to claim 1, wherein the blade portion includes a guide portion guided by the rail portion. The plurality of frame portions can freely move allowing the outer shape of the opening to be out of a circle,
3. The fan unit according to claim 2, wherein the blade part is freely rotatable while extending and contracting as the guide part is guided by the rail part.   An apparatus in which the fan unit according to any one of claims 1 to 3 is mounted.

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