Blower device

Abstract

A blower device for a vehicle includes at least two blowers having fan shafts arranged in parallel with each other, a single motor for driving and rotating the blowers, and a shroud for holding the two blowers. The motor includes a motor portion and a motor shaft driven by and extending from the motor portion. The shroud has shroud ring portions each of which has a circular shape to cover an outer peripheral portion of the blower, and a shroud plate portion extending from the shroud ring portions to an outside. Furthermore, the fan shafts of the blowers are coupled to the motor shaft via a gear portion, and the motor portion is attached to the shroud plate portion to be offset from a center connection line connecting the centers of the shroud ring portions.

Description

CROSS REFERENCE TO RELATED APPLICATION[0001]This application is based on Japanese Patent Application No. 2006-216494 filed on Aug. 9, 2006, the contents of which are incorporated herein by reference in its entirety.BACKGROUND OF THE INVENTION[0002]1. Field of the Invention[0003]The present invention relates to a blower device having plural blowers. For example, the blower device can be suitably used for a vehicle, for blowing air to a heat exchanger.[0004]2. Description of the Related Art[0005]In a conventional vehicle blower device for blowing air to a heat exchanger having a long length in a vehicle width direction, two axial fans are arranged on a downstream air side of a core portion of the heat exchanger, and the two axial fans are rotated respectively by two motors. That is, plural motors having the same number as plural axial fans are connected to rotation shafts of the plural axial fans, respectively. In this case, however, the number of components of the blower device is in...

AI Technical Summary

Benefits of technology

[0007]In view of the foregoing problems, it is an object of the present invention to provide a blower device for a vehicle, which can easily mounted on the vehicle.

[0009]According to an example of the present invention, a blower device for a vehicle includes a plurality of blowers having fan shafts arranged in parallel with each other, for blowing air toward a heat exchanger mounted to the vehicle, a single motor for driving and rotating the blowers, and a shroud for holding the blowers and for forming air passages from the heat exchanger to the blowers. The shroud includes a plurality of shroud ring portions each of which has a circular shape to surround an outer peripheral portion of the blower, and a shroud plate portion extending smoothly from a rear side of the heat exchanger to the shroud ring portions. Furthermore, the fan shafts are coupled to a motor shaft of the motor via a gear portion, and the motor is located downstream from the shroud plate portion to be offset from a center connection line connecting centers of the shroud ring portions. Accordingly, the motor can be easily mounted to the vehicle on the downstream air side of the shroud plate portion using a space offset from the center connection line, thereby improving mounting performance of the blower device.

[0014]According to another example of the present invention, a blower device includes at least two blowers having fan shafts arranged in parallel with each other, a single motor for driving and rotating the two blowers, and a shroud for holding the two blowers. Furthermore, the motor includes a motor portion and a motor shaft driven by and extending from the motor portion, and the fan shafts of the blowers are coupled to the motor shaft via a gear portion. The shroud has two shroud ring portions each of which has a circular shape to cover an outer peripheral portion of the blower, and a shroud plate portion extending from the shroud ring portions to an outside. In the blower device, the motor portion is attached to the shroud plate portion at a position offset from a center connection line connecting centers of the shroud ring portions. Accordingly, the motor portion can be easily attached at a position offset from an arrangement direction of the blowers.

Problems solved by technology

In this case, however, the number of components of the blower device is increased, and the size and weight of the entire blower device become large.

However, in this blower device, the motor is located on an extension line of the arrangement direction, and is interfered by a vehicle body when being mounted on the vehicle, thereby it is difficult to be mounted on the vehicle.

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