JP2007060838A - Vehicle motor fan - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vehicle motor fan capable of improving power of the motor and realizing size reduction by efficiently cooling a motor of a motor fan. <P>SOLUTION: The vehicle motor fan is provided with a fan shroud 2 mounted on a heat exchanger, the fan 3, and the motor 4 mounted on the fan shroud 2. A first cooling path X1 is provided in the vehicle motor fan, and partially guides air on the high-pressure side generated by a rotation of the fan 3 and circulated within the motor 4. Thereafter, the air is guided to the low-pressure side of the fan 3. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an automobile motor fan.

2. Description of the Related Art Conventionally, a motor shroud mounted on a heat exchanger and a motor fan for an automobile including a fan and a motor mounted on the fan shroud have been known (see Patent Documents 1 and 2).
Such an automobile motor fan has a structure in which a part of the air on the high pressure side is circulated inside the motor by the rotation of the fan to cool the motor.
Japanese Utility Model Publication No.59-35624 JP-A-9-74718

However, in the conventional motor fan for automobiles, the motor is cooled using only the air that is on the high pressure side due to the rotation of the fan, so that the amount of air circulating inside the motor is small and cannot be sufficiently cooled. There was a point.
In recent years, motor fan cooling targets are not limited to radiators and condensers, and integrated heat exchangers, sub-radiators, oil coolers, intercoolers, etc., in which a radiator and a condenser are integrally formed, may be combined. In order to meet the specification requirements, it has been desired to improve the output and miniaturize the motor.

  SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a motor fan for an automobile that can efficiently and sufficiently cool a motor, thereby improving motor output and reducing the size. Is to provide.

  According to a first aspect of the present invention, in a motor fan for a motor vehicle including a fan shroud mounted on a heat exchanger and a fan and a motor mounted on the fan shroud, the fan rotates on the high-pressure side of the fan. After a part of the air to be circulated in the motor is provided with a first cooling path that leads to the low pressure side of the fan.

  According to a second aspect of the present invention, in a motor fan for a motor vehicle including a fan shroud mounted on a heat exchanger, and a fan and a motor mounted on the fan shroud, one air in front of the heat exchanger is provided. And a second cooling path that leads to the low pressure side of the fan after the part is circulated inside the motor.

  According to the first aspect of the present invention, in a motor fan for an automobile including a fan shroud mounted on a heat exchanger, and a fan and a motor mounted on the fan shroud, Since a part of the air on the high-pressure side is circulated inside the motor and then has a first cooling path that leads to the low-pressure side of the fan, the motor is made efficient by utilizing the pressure difference between the high-pressure side and low-pressure side of the fan. Cooling can be performed well, and thus, the motor output can be improved and the size can be reduced.

  In the invention according to claim 2 of the present invention, in a motor fan for an automobile including a fan shroud attached to the heat exchanger, and a fan and a motor attached to the fan shroud, the front of the heat exchanger is provided. Since the motor is cooled with low-temperature air before passing through the heat exchanger because it has a second cooling path that leads part of the air through the motor to the low-pressure side of the fan, it cools the motor efficiently. This can improve the motor output and reduce the size.

  Embodiments of the present invention will be described below with reference to the drawings.

Example 1 will be described below.
In addition, the motor fan for motor vehicles of the present Example 1 demonstrates the case where a heat exchanger is applied to a radiator.
FIG. 1 is an exploded perspective view (a) and a perspective view (b) showing an automobile motor fan according to a first embodiment of the present invention, and FIG. 2 is a sectional view (partially) taken along line S2-S2 of FIG. (Omitted) is a diagram for explaining the operation.

First, the overall configuration will be described.
As shown in FIG. 1, the motor fan for an automobile according to the first embodiment includes a radiator 1, a fan shroud 2, a fan 3, and a motor 4.

The radiator 1 includes an aluminum core portion 5 and resin tanks T1 and T2 mounted on the top and bottom of the core portion 5.
The core part 5 is composed of a pair of upper and lower tube plates 5a, 5b, a plurality of tubes 5c fitted and fixed to the tube plates 5a, 5b, and a plurality of fins 5d arranged between adjacent tubes 5c. Yes. Further, both end portions of the core portion 5 are connected and reinforced by a pair of reinforcements R1 and R2.
Then, a clad layer (brazing sheet) is provided on at least one side of the joint portions of the respective constituent members of the core portion 5, and these are preliminarily assembled and then heat-treated in a heating furnace (not shown). It is brazed together.

The tanks T1 and T2 are fixed by crimping to the corresponding tube plates 5a and 5b of the core part 5 after brazing, and ports P1 and P2 projecting toward the vehicle rear side are provided in the tanks T1 and T2, respectively. ing.
Further, fixing portions 6a, 6a having female screw fixing holes are provided on the left and right rear surfaces of the tank T1, and fixing portions 6b, 6b formed in a bag shape on the vehicle upper side are provided on the left and right rear surfaces of the tank T2. Is provided.

The fan shroud 2 is integrally formed of resin, and plate-like fixing portions 2a, 2a having fixing holes are provided on both sides of the upper portion of the vehicle, and plate-like fixing portions 2b, 2b is provided.
In addition, a fan ring portion 7 projecting in a cylindrical shape on the rear side of the vehicle is formed at the center portion of the fan shroud 2, and five fan stay portions 7a, which will be described later, extend from the fan ring portion 7 toward the center thereof. The motor 4 and the fan 3 to be described later are fixedly supported by ˜7d. The arrangement and number of fan stay portions 7a to 7d can be set as appropriate.

  Then, the fixing portions 2b, 2b on both sides of the lower part of the fan shroud 2 are inserted into the bag-like interiors of the corresponding fixing portions 6b, 6b of the tank of the radiator 1, respectively. The fan shroud 2 and the radiator 1 are fixed by inserting bolts B1 and B1 through the fixing holes 2a and 2a and screwing them into the fixing holes of the fixing portions 6a and 6a of the radiator 1.

As shown in FIG. 2, in the motor fan for automobiles according to the first embodiment, the radiator 1, the fan 3, and the motor 4 are arranged in this order from the front side of the vehicle.
The fan 3 employs a so-called ring fan in which a plurality of blades 10 are formed from the outer periphery of the dish-shaped boss portion 8 toward the cylindrical cylindrical portion 9. The fan 3 is not limited to a ring fan.

The rotating shaft 4a of the motor 4 is connected and fixed to the central portion of the boss 8 while the front portion of the motor 4 is housed inside the boss 8 so that the fan 3 is rotated by driving the motor 4. It is possible.
Further, a gap W <b> 1 is formed between the front portion of the motor 4 and the boss portion 8, and a cooling port 11 communicating with the inside is formed on the front surface of the motor 4.
In addition, a cooling port 12 is formed in the rear portion of the motor 4 so as to open upward and communicate with the cooling port 11 of the motor 4 through the inside of the motor 4.

  The fan stay portion 7 a is formed in a tubular shape, and one end portion thereof communicates with the cooling port 12 of the motor 4, and the other end portion is located on the vehicle rear side of the radiator 1 and on the vehicle front position of the fan 3. It is communicated.

Next, the operation will be described.
In the motor motor fan configured as described above, the ports P1 and P2 of the radiator 1 are connected to the connection pipe on the engine side, respectively, and flow into the tank T1 from the engine side via the port P1 of the radiator 1 at around 110 ° C. 80 through the heat exchange with the vehicle running wind or the forced wind by the motor fan (shown by the one-dot chain line arrow in FIG. 2) through the fins 5d while flowing through the tubes 5c and flowing into the tank T2. After being cooled to around 0 ° C., it is discharged again to the engine side via the port P2, thereby functioning as the radiator 1.

  In addition, the motor fan for automobiles drives the motor 4 to rotate the fan 3 to suck the air on the front side of the vehicle of the radiator 1 to generate the above-described forced wind, and then the fan ring unit 7 and each It functions as a fan by discharging to the vehicle rear side from the gap between the fan stay portions 7a to 7d.

  At this time, the rotation of the fan 3 results in low-pressure air on the vehicle front side of the fan 3 and high-pressure air on the vehicle rear side of the fan 3.

  In addition, although the interior of the motor 4 gradually becomes hot as the motor 4 is driven, in the motor fan for automobiles according to the first embodiment, a part of the air on the high-pressure side of the fan 3 as shown by the wavy arrow in FIG. Is introduced from the cooling port 11 of the motor 4 through the gap W1 to cool the inside of the motor 4, and then guided from the cooling port 12 of the motor 4 to the low pressure side of the fan 3 through the inside of the fan stay portion 7a. ing.

  Therefore, the motor fan for automobiles according to the first embodiment can efficiently cool the inside of the motor 4 and improve the output by forming the first cooling path X1 using the air pressure difference before and after the fan 3.

  In addition, since the air pressure difference is used, it is not necessary to ensure a large gap W1, and the motor 4 can be made smaller than the conventional invention. As a result, the clearance between the core portion 5 and the fan 3 is increased. Fan efficiency.

  Here, in the conventional invention, since the motor is cooled using only the air that is on the high pressure side by the rotation of the fan, there is a problem that the amount of air flowing through the motor is small and the cooling cannot be performed sufficiently. there were.

  On the other hand, in the motor fan for automobiles according to the first embodiment, the motor 4 can be efficiently cooled by introducing a large amount of air into the motor 4 using the pressure difference between the air before and after the fan 3. Can be cooled sufficiently.

Next, the effect will be described.
As described above, in the motor fan for automobiles according to the first embodiment, the fan shroud 2 attached to the heat exchanger, and the fan 3 and the motor 4 attached to the fan shroud 2 are used for automobiles. In the motor fan, the motor 4 is provided with the first cooling path X1 that circulates a part of the air on the high pressure side of the fan 3 by the rotation of the fan 3 and then leads to the low pressure side of the fan 3. Cooling can be performed efficiently, and thereby, the output of the motor 4 can be improved and the size can be reduced.

  In addition, since a part of the first cooling path is formed by the fan stay part 7a of the fan shroud 2, the first cooling path X1 is formed without sacrificing the opening area of the fan shroud 2 and each of the fan stay parts 7a to 7d. it can.

Example 2 will be described below.
FIG. 3 is a cross-sectional view for explaining an automobile motor fan according to a second embodiment of the present invention, and is a view for explaining the operation.
In the second embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, and the description thereof will be omitted. Only the differences will be described in detail.

  As shown in FIG. 3, in the motor fan for automobiles of the second embodiment, the arrangement of the fan and the motor is reversed from that of the first embodiment, whereby the radiator 1, the motor 4, and the fan 3 are arranged from the front side of the vehicle. Arranged in order.

Further, the other end side inside the fan stay portion 7 a communicates with the vehicle rear side of the fan 3.
Then, when the motor 4 is driven to rotate the fan 3, as shown by the wavy arrow in FIG. 3, a part of the air on the high pressure side of the fan 3 passes through the inside of the fan stay portion 7 a of the motor 4. After being introduced from the cooling port 12 to cool the inside of the motor 4, it is guided from the cooling port 11 of the motor 4 to the low pressure side of the fan 3 through the gap W <b> 1.

  Therefore, the motor fan for an automobile according to the second embodiment can efficiently cool the inside of the motor 4 by forming the first cooling path X2 illustrated by the wavy arrow using the pressure difference between the air before and after the fan 3. The output can be improved.

  Moreover, since the fan 3 can be arrange | positioned back compared with Example 1, the clearance gap between the core part 5 and the fan 3 can be expanded, and fan efficiency can be improved.

Example 3 will be described below.
FIG. 4 is a cross-sectional view for explaining an automobile motor fan according to a third embodiment of the present invention, illustrating the operation thereof, and FIG. 5 is a lower perspective view of the vicinity of the tank.
In the motor fan for an automobile according to the third embodiment, the same components as those of the second embodiment are denoted by the same reference numerals, the description thereof will be omitted, and only differences will be described in detail.

  As shown in FIG. 4, in the motor fan for automobiles according to the third embodiment, the radiator 1, the motor 4, and the fan 3 are arranged in this order from the front side of the vehicle, and the cooling port 12 of the motor 4 faces downward. In addition to being arranged, one end of a duct 30 formed integrally with the fan shroud 2 is connected in a state where it is communicated. The duct 30 may be configured separately from the fan shroud 2.

Further, as shown in FIG. 5, the other end of the duct 30 is connected to the bottom of the tank T <b> 2 of the radiator 1 in communication with an adapter 31 that is integrally formed in a cylindrical shape.
In addition, about the connection method of the duct 30 and the adapter 31, it can set suitably. The adapter 31 may be formed by a part of the radiator core support lower (not shown) instead of the tank T2 of the radiator 1.

  Then, as shown in FIG. 4, a part of the air in front of the radiator 1 (vehicle traveling wind) is introduced from the cooling port 12 of the motor 4 through the adapter 31 and the duct 30 to cool the inside of the motor 4. Then, it guide | induces to the low voltage | pressure side of the fan 3 from the cooling port 11 of the motor 4 via the clearance gap W1.

  Therefore, the motor fan for an automobile of the third embodiment efficiently forms the motor 4 by forming the second cooling path X3 illustrated by the wavy arrow using a part of the low-temperature air before passing through the radiator 1. It can be cooled and output can be improved.

  As described above, in the automobile motor fan of the third embodiment, in the automobile motor fan including the fan shroud 2 attached to the heat exchanger, and the fan 3 and the motor 4 attached to the fan shroud 2. In order to provide the second cooling path X3 that leads a part of the air in front of the heat exchanger to the inside of the motor 4 and then leads to the low pressure side of the fan 3, a part of the low-temperature air before passing through the radiator 1 is provided. By utilizing this, the inside of the motor 4 can be efficiently cooled, and the output of the motor 4 can be improved.

Although the present embodiment has been described above, the present invention is not limited to the above-described embodiment, and design changes and the like within the scope not departing from the gist of the present invention are included in the present invention.
For example, the heat exchanger is not limited to the radiator 1 and can be applied to all general heat exchangers such as a condenser, a sub-radiator, an intercooler, an oil cooler, and an integrated heat exchanger in which a radiator and a condenser are integrally formed.

  Further, a part of the radiator core support may be used as a part of the first and second cooling paths X1, X2, and X3.

It is the disassembled perspective view (a) which shows the motor fan for motor vehicles of Example 1 of this invention, and the same perspective view (b). It is sectional drawing in the S2-S2 line of FIG.1 (b) (a part is abbreviate | omitted), and is a figure explaining an effect | action. It is sectional drawing explaining the motor fan for motor vehicles of Example 2 of this invention, and is a figure explaining an effect | action. It is sectional drawing explaining the motor fan for motor vehicles of Example 3 of this invention, and is a figure explaining an effect | action. It is a downward perspective view near a tank.

Explanation of symbols

B1, B1 Bolt T1, T2 Tank P1, P2 Port R1, R2 Reinforce 1 Radiator 2 Fan shroud 2a, 2b, 6a, 6b Fixed part 3 Fan 4 Motor 4a Rotating shaft 5 Core part 5a, 5b Tube plate 5c Tube 5d Fin 7 Fan rings 7 a, 7 b, 7 c, 7 d Fan stay portion 8 Boss portion 9 Cylindrical portion 10 Blade 11, 12 Cooling port 30 Duct 31 Adapter

Claims (2)

In an automotive motor fan comprising a fan shroud mounted on a heat exchanger, and a fan and motor mounted on the fan shroud,
A motor motor fan for an automobile, comprising: a first cooling path that circulates a part of the air on the high pressure side of the fan by rotation of the fan into the motor and then guides the air to the low pressure side of the fan. In an automotive motor fan comprising a fan shroud mounted on a heat exchanger, and a fan and motor mounted on the fan shroud,
A motor motor fan for an automobile, comprising a second cooling path that circulates a part of the air in front of the heat exchanger into the motor and then guides the air to a low pressure side of the fan.

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