JP2012207661A - Blower - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a thin blower.SOLUTION: The blower 5 includes: a motor 10; a fan 11 rotating by the motor 10; a case 12 housing the fan 11; and a bell mouth 22 preventing air from the outside of the fan 11 from flowing into a channel 20 formed between the case 12 and the fan 11. The case 12 includes a fitting portion 17 in which a duct 4 for introducing air to the fan 11 fits to an outer wall 17a and which is formed outside further than the bell mouth 22.

Description

  The present invention relates to a blower.

  Conventionally, Patent Document 1 discloses a battery that sucks air with a blower and flows air into a battery pack to cool a battery that supplies electric power to a motor for driving a vehicle.

JP 2009-154599 A

  In the above invention, the blower is provided on the side of the trunk room, and there is a problem that the trunk room becomes narrower as the blower becomes larger.

  The present invention was invented to solve such problems, and has an object to make the blower thin.

  A blower according to an aspect of the present invention includes a fan that is rotated by a motor, a case that houses the fan, and a bell that suppresses air from flowing into the flow path formed between the case and the fan from the outside of the fan. A case is provided with a mouse, and the case includes a fitting portion in which a duct for introducing air into the fan is fitted to the outer wall and formed outside the bell mouth.

  According to this aspect, the blower can be thinned by reducing the height of the fitting portion.

It is a schematic block diagram which shows the battery cooling system of 1st Embodiment. It is a block diagram of the blower of 1st Embodiment. FIG. 3 is a sectional view taken along line III-III in FIG. 2. It is a block diagram of the blower which does not use 1st Embodiment. It is a block diagram of the blower of 2nd Embodiment. It is VI-VI sectional drawing of FIG. It is a schematic block diagram which shows the battery cooling system of 3rd Embodiment. It is a figure which shows the modification of the battery cooling system of 3rd Embodiment. It is a block diagram of the blower of 4th Embodiment. It is a block diagram of the blower of 5th Embodiment. It is a block diagram of the blower of 6th Embodiment.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  A battery cooling system using the blower of the first embodiment of the present invention will be described with reference to FIG. FIG. 1 is a schematic configuration diagram of a battery cooling system. Below, although the battery cooling system mounted in a vehicle is demonstrated, it is not restricted to this.

  The battery cooling system 1 includes an intake duct 2, a battery pack 3, and a blower 5.

  The intake duct 2 communicates the grill 7 provided in the vehicle interior with the intake port 3a of the battery pack 3 and introduces the air in the vehicle interior to the battery pack 3 when the blower 5 is driven.

  The battery pack 3 is provided below the trunk room of the vehicle, and the air sucked through the intake duct 2 flows in. In FIG. 1, the trunk room is omitted (hereinafter the same). The battery pack 3 includes a battery (not shown) that supplies electric power to a drive motor of the vehicle, and heat exchanged between the air sucked into the battery pack 3 and the battery.

  The blower 5 includes a first exhaust duct 4, a second exhaust duct 6, a motor 10, a fan 11, and a blower case 12.

  The blower 5 is provided on the side surface side of the vehicle, is located downstream of the battery pack 3 in the air flow direction, and communicates with the exhaust port 3 b of the battery pack 3 through the first exhaust duct 4. The air sucked by the blower 5 is discharged through the second exhaust duct 6. Here, the blower 5 will be described in detail with reference to FIGS. FIG. 2 is a view of the blower 5 as seen from the battery pack 3 side. 3 is a cross-sectional view taken along the line III-III in FIG. In addition, the blower 5 is arrange | positioned so that the bottom part 15 of the blower 5 shown in FIG. 3 may face the side surface of a vehicle.

  The fan 11 is connected to the rotating shaft 10a of the motor 10, and is connected to the rotating portion 13 that rotates together with the rotating shaft 10a of the motor 10 and the radially outer end of the rotating portion 13, and has a constant interval along the circumferential direction. And the blade 14 arranged in the above.

  The blower case 12 has a bottom portion 15 to which the motor 10 is attached, a top surface portion 16 facing the bottom portion 15 and having an opening portion 16a, and extends from the opening portion 16a toward the opposite side of the bottom portion 15 to form a first portion. The fitting portion 17 into which the exhaust duct 4 is fitted, the outer peripheral end of the bottom portion 15 and the outer peripheral end of the upper surface portion 16 are connected to each other, the side surface portion 18 formed along the circumferential direction, and the discharge port 18a of the side surface portion 18. And a discharge mouth 19 communicating with the bell mouth 22.

  A flow path 20 through which air blown out by the fan 11 flows is formed in the blower case 12 radially outside the fan 11. The flow path 20 is formed along the circumferential direction, and communicates with the discharge path 19 at the discharge port 18 a of the side surface portion 18. The distance between the side surface portion 18 and the fan 11 decreases as the distance from the discharge port 18a of the side surface portion 18 proceeds in the direction opposite to the rotation direction of the fan 11. In FIG. 2, the direction of rotation of the fan 11 is indicated by an arrow (hereinafter the same).

  As for the fitting part 17, the 1st exhaust duct 4 fits to the outer peripheral wall 17a. As for the fitting part 17, the bellmouth 22 is attached to the inner peripheral wall 17b. That is, the fitting portion 17 is provided on the outer side in the radial direction than the bell mouth 22.

  The bell mouth 22 protrudes from the inner peripheral wall 17b of the fitting portion 17 toward the rotating shaft 10a of the motor 10, that is, radially inward. The bell mouth 22 is a rectifying member that is annular when viewed from the axial direction and has a semicircular arc in cross-sectional shape along the axial direction.

  When viewed from the axial direction, the bell mouth 22 is provided so as to cover a part of the blade 14. Further, the bell mouth 22 is provided so as not to contact the fan 11 in the axial direction and the radial direction. The bell mouth 22 is provided so as to prevent the air from flowing into the flow path 20 through the outside in the radial direction from the fan 11 and so that the air flowing through the flow path 20 does not flow backward to the first exhaust duct 4 side. .

  When the fan 11 is rotated by the motor 10, the air near the fan 11 is blown out to the flow path 20, and the air blown to the flow path 20 flows through the flow path 20 along the rotation direction of the fan 11. Further, air is sucked into the blower 5 from the first exhaust duct 4. In this way, the air in the passenger compartment flows in the order of the grill 7, the intake duct 2, the battery pack 3, and the blower 5 to cool the battery.

  The effect of 1st Embodiment of this invention is demonstrated.

  When the bell mouth 31 is arranged outside the fitting portion 30 as shown in FIG. 4 without using this embodiment, the fitting allowance between the first exhaust duct 32 and the fitting portion 30 (FIG. 4). In addition to the middle A), a clearance (B in FIG. 4) between the first exhaust duct 32 and the bell mouth 31 is required. Therefore, the length of the blower 33 in the axial direction is increased, and the trunk room is reduced accordingly. Further, it is possible to widen the trunk room by reducing the width of the first exhaust duct 32 (C in FIG. 4) and reducing the cross-sectional area of the flow path of the first exhaust duct 32. When the flow path cross-sectional area of the first exhaust duct 32 decreases, the ventilation resistance in the first exhaust duct 32 increases. Thereby, the sound generated in the blower 5 is increased and the sound generated in the battery cooling system 1 is increased.

  In this embodiment, the fitting part 17 is provided outside the bell mouth 22, and the first exhaust duct 4 and the bell mouth 22 are fitted to the outer peripheral wall 17 a of the fitting part 17. The clearance can be eliminated, and the position can be lowered without shortening the length of the fitting portion 17. Thereby, the blower 5 can be thinned. Therefore, the trunk room can be widened.

  In addition, the trunk room can be widened without reducing the flow passage cross-sectional area of the first exhaust duct 4, and the noise generated in the battery cooling system 1 can be reduced.

  Next, a battery cooling system using the blower of the second embodiment of the present invention will be described with reference to FIGS. FIG. 5 is a configuration diagram of the blower 40 viewed from the battery pack side as in the first embodiment. 6 is a cross-sectional view taken along the line VI-VI in FIG.

  The blower 40 of this embodiment differs in the blower case 41 compared with 1st Embodiment. About the same structure as 1st Embodiment, the code | symbol same as 1st Embodiment is attached | subjected and description here is abbreviate | omitted.

  The blower case 41 includes a projecting portion 42 that projects outward from the fitting portion 17 toward the first exhaust duct 4 side, that is, the side opposite to the bottom portion 15.

  The protruding part 42 is formed by inclining the upper surface part 43 so that the protruding part 42 protrudes in the direction opposite to the bottom part 15 as it becomes radially outward. Specifically, the upper surface portion 43 is inclined such that the distance between the radially outer upper surface portion 43 and the bottom portion 15 is larger than the distance between the radially inner upper surface portion 43 and the bottom portion 15. Thereby, the cross-sectional area of the flow path 44 becomes large.

  Further, the distance between the upper surface portion 43 and the bottom portion 15 decreases as the distance from the discharge port 18a of the side surface portion 18 advances in the direction opposite to the rotation direction of the fan 11. That is, the cross-sectional area of the flow path 44 becomes smaller as it proceeds in the direction opposite to the rotation direction of the fan 11 from the discharge path 19 side.

  The effect of 2nd Embodiment of this invention is demonstrated.

  By providing the blower case 41 with the protruding portion 42, the cross-sectional area of the flow path 44 can be increased, and the resistance in the flow path 44 can be reduced. Thereby, the sound generated by the small blower 40 can be further reduced.

  In addition, the protrusion part 42 is not limited to the shape of this embodiment, The cross-sectional area of the flow path 44 should just become large, for example, the protrusion part from which cross-sectional shape becomes a rectangular shape may be sufficient.

  Next, the battery cooling system 51 using the blower 50 of 3rd Embodiment of this invention is demonstrated using FIG. FIG. 7 is a schematic configuration diagram of the battery cooling system 51.

  In the present embodiment, the position of the blower 50 is different from that in the first embodiment. About the same structure as 1st Embodiment, the code | symbol same as 1st Embodiment is attached | subjected and description here is abbreviate | omitted.

  The battery cooling system 51 of this embodiment includes a blower 50 on the upstream side of the battery pack 3 in the air flow direction.

  The blower 50 is disposed on the side surface side of the vehicle, sucks air in the vehicle compartment by the first intake duct 52, and blows air to the battery pack 3 by the second intake duct 53.

  The battery pack 3 communicates with the exhaust duct 54, and air that has cooled the battery pack 3 by the exhaust duct 54 is discharged.

  If the blower is arranged upstream of the battery pack in the air flow direction, the flow passage cross-sectional area of the first intake duct communicating with the vehicle interior is reduced, and the sound generated in the battery cooling system is increased. However, by using the blower 50 of this embodiment, the trunk room can be widened and the sound generated in the battery cooling system 1 can be reduced without reducing the flow passage cross-sectional area of the first intake duct 52.

  In addition, you may provide the blower 50 above a trunk room, as shown in FIG. Moreover, it is also possible to use the blower of 2nd Embodiment for 3rd Embodiment.

  Next, a fourth embodiment of the present embodiment will be described with reference to FIG.

  The blower 60 of the present embodiment differs from the first embodiment in the shape of the first exhaust duct 61 and further includes a guide rib 62. About the same structure as 1st Embodiment, the code | symbol same as 1st Embodiment is attached | subjected and description here is abbreviate | omitted.

  The guide rib 62 extends toward the first exhaust duct 61 from the radially inner end of the bell mouth 22 whose cross section in the direction of the rotation axis 10a of the motor 10 has a semicircular arc shape. The guide rib 62 has a cylindrical shape centered on the rotation shaft 10 a of the motor 10.

  The first exhaust duct 61 extends from the portion where it is fitted to the fitting portion 17 toward the rotating shaft 10a of the motor 10, and further extends along the rotating shaft 10a of the motor 10 radially inward. The introduction part 63 is formed by curving a part of the duct 61. The introduction portion 63 is formed so as not to contact the fitting portion 17 and the guide rib 62 during driving of the blower 60 in the direction of the rotation shaft 10a of the motor 10. The introduction portion 63 is formed so that the inner diameter of the introduction portion 63, that is, the diameter of the inner peripheral wall of the portion extending along the rotation shaft 10 a of the motor 10, and the inner diameter of the guide rib 62 substantially coincide with each other. The substantially coincidence is not limited to the case where the inner diameter of the introducing portion 63 and the inner diameter of the guide rib 62 are completely coincident, but includes the case where the inner diameter of the introducing portion 63 and the inner diameter of the guide rib 62 are slightly shifted. Even when the inner diameter of the introduction portion 63 and the inner diameter of the guide rib 62 are slightly deviated, it is sufficient that the amount of air flowing into the bell mouth 22 side is sufficiently suppressed and air can be introduced into the fan 11.

  Since the inner diameter of the introducing portion 63 and the inner diameter of the guide rib 62 are substantially the same, the air flowing through the first exhaust duct 61 is suppressed from flowing into the fitting portion 17, and the air flows along the guide rib 62.

  The effect of 4th Embodiment of this invention is demonstrated.

  A guide rib 62 extending from the radially inner end of the bell mouth 22 toward the first exhaust duct 61 is provided, and an introduction portion 63 extending from the position where the fitting portion 17 is fitted toward the rotating shaft 10a side of the motor 10 is provided. It is provided in the first exhaust duct 61, and the inner diameter of the guide rib 62 and the inner diameter of the introduction portion 63 are substantially matched. Thereby, when air is made to flow into the blower 60, it can suppress that air flows in into the bell mouth 22 side, and it can suppress that air collides with the bell mouth 22 and sound is generated.

  In the fourth embodiment, the guide rib 62 is provided. However, the introduction portion 63 may be provided in the first exhaust duct 61 without providing the guide rib 62.

  Next, a fifth embodiment of the present invention will be described with reference to FIG.

  The blower 65 of this embodiment differs in the shape of the 1st exhaust duct 66 compared with 1st Embodiment. The same configurations as those of the first embodiment are denoted by the same reference numerals as those of the first embodiment, and description thereof is omitted here.

  The first exhaust duct 66 extends from a position where it is fitted to the fitting portion 17 toward the rotating shaft 10a side of the motor 10 and the bell mouth 22 side, and further extends along the rotating shaft of the motor radially inward. The introduction portion 67 is formed by curving a part of the first exhaust duct 66. The introduction portion 67 is formed so that the inner diameter of the introduction portion 67 and the inner diameter of the bell mouth 22 are substantially matched.

  The effect of 5th Embodiment of this invention is demonstrated.

  The first exhaust duct 66 is provided with an introduction portion 67 extending from the fitting portion 17 toward the rotating shaft 10a side and the bell mouth 22 side of the motor 10, and the inner diameter of the introduction portion 67 and the inner diameter of the bell mouth 22 are provided. And approximately match. Thereby, when air is made to flow into the blower 65, it can suppress that air flows in into the bellmouth 22 side, and it can suppress that air collides with the bellmouth 22 and sound is generated.

  Next, a sixth embodiment of the present invention will be described with reference to FIG.

  The blower 70 of this embodiment is provided with an inflow suppression part 71 between the bell mouth 22 and the introduction part 67 with respect to the blower 60 of the fourth embodiment. Since other configurations are the same as those of the fourth embodiment, description thereof is omitted here.

  The inflow suppressing portion 71 is made of, for example, urethane foam, and is provided between the bell mouth 22 and the introducing portion 67. The inflow suppressing portion 71 is in contact with the guide rib 62 on the radially inner side. The inflow suppression unit 71 suppresses the inflow of air between the bell mouth 22 and the introduction unit 67.

  The effect of the sixth embodiment of the present invention will be described.

  Between the bell mouth 22 and the introduction portion 67, by providing an inflow suppression portion that suppresses the inflow of air between the bell mouth 22 and the introduction portion 67, it is possible that air flows into the bell mouth 22 side. Furthermore, it can suppress further and it can suppress further that air collides with the bellmouth 22 and a sound is generated.

  You may provide an inflow suppression part in the blower of 5th Embodiment. Furthermore, instead of the inflow suppression part 71, the thickness in the radial direction of the guide rib 62 may be increased to prevent air from flowing into the bell mouth 22 side.

  It goes without saying that the present invention is not limited to the above-described embodiments, and includes various modifications and improvements that can be made within the scope of the technical idea.

  In the above-described embodiment, the bell mouth 22 is protruded radially inward from the inner peripheral wall 17b of the fitting portion 17 so that the fitting portion 17 is completely radially outer than the bell mouth 22. Although provided, you may provide so that a fitting part may become a radial direction outer side rather than at least some bell mouths. For example, the fitting portion may be provided so that the fitting portion and the bell mouth are joined to each other on the outer side in the radial direction than the place where the height of the bell mouth in the axial direction is the highest. Even in such a configuration, the effects in the above-described embodiment can be obtained.

4 First exhaust duct (duct)
5, 40, 50, 60, 65, 70 Blower 10 Motor 11 Fan 12 Blower case (case)
17 fitting part 20 flow path 22 bell mouth 42 protrusion part 52, 61, 66 1st air intake duct (duct)
62 Guide rib 63, 67 Introduction part 71 Inflow suppression part

Claims (7)

A motor and a fan rotated by the motor;
A case for housing the fan;
A blower comprising a bell mouth that suppresses air from flowing into the flow path formed between the case and the fan from the outside of the fan,
The blower is characterized in that a duct for introducing air into the fan is fitted into an outer wall and includes a fitting portion formed outside the bell mouth. The blower according to claim 1,
The said case is provided with the protrusion part which protrudes to the said duct side outside the said fitting part, The blower characterized by the above-mentioned. The blower according to claim 1 or 2,
The duct includes an introduction portion that extends from a portion where the fitting portion is fitted to the rotating shaft side of the motor and introduces the air into the fan.
The blower according to claim 1, wherein an inner diameter of the introduction portion substantially matches an inner diameter of the bell mouth. The blower according to claim 3, wherein
A guide rib extending from the inner peripheral end of the bell mouth toward the duct;
The blower according to claim 1, wherein an inner diameter of the introduction portion substantially coincides with an inner diameter of the guide rib. The blower according to claim 3, wherein
The blower characterized in that the introduction portion extends from the fitting portion toward the bell mouth side. A blower according to any one of claims 3 to 5,
A blower comprising an inflow suppressing portion that suppresses the inflow of air between the bell mouth and the introducing portion. A motor and a fan rotated by the motor;
A case for housing the fan;
A blower comprising a bell mouth that suppresses air from flowing into the flow path formed between the case and the fan from the outside of the fan,
The blower is characterized in that a duct for introducing air into the fan is fitted into an outer wall and includes a fitting portion formed outside at least a part of the bell mouth.

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