CROSS REFERENCE TO RELATED APPLICATION

The present application claims priority under 35 U.S.C. § 119 to Japanese Application No. 2019-103113 filed on May 31, 2019, the entire contents of which are incorporated herein by reference.

1. FIELD OF THE INVENTION

The present disclosure relates to a blower.

2. BACKGROUND

For example, a counter-rotating axial flow fan in which two (plural) single axial flow fans are connected axially is known. The counter-rotating axial flow fan has a large air volume and a high static pressure, and thus enables increase in cooling efficiency of an electric device having a small space in which air flows.

Unfortunately, the above-described counter-rotating axial flow fan is configured such that the single axial flow fans have individual cases that are coupled to each other. Thus, to couple the cases to each other, there is required not only an operation to allow the cases to come close to each other and come contact with each other, but also an operation to rotate one case with respect to the other case.

SUMMARY

A blower according to an example embodiment of the present disclosure includes a first fan to generate an airflow flowing in a direction along a central axis extending vertically, a second fan that is disposed axially below and coaxially with the first fan, and a housing with a tubular shape that extends along the central axis and accommodates the first fan and the second fan. The housing includes an upper tubular portion accommodating the first fan, a lower tubular portion accommodating the second fan, a first fan support that is disposed at an axially lower end portion of the upper tubular portion to support the first fan, and a second fan support that is disposed at an axially upper end portion of the lower tubular portion to support the second fan. The upper tubular portion is circumferentially separable into a first upper tubular divided body and a second upper tubular divided body. The lower tubular portion is circumferentially separable into a first lower tubular divided body and a second lower tubular divided body. The housing is separable into a first structure including the first upper tubular divided body, the first lower tubular divided body, and the first fan support, and a second structure including the second upper tubular divided body, the second lower tubular divided body, and the second fan support.

The above and other elements, features, steps, characteristics and advantages of the present disclosure will become more apparent from the following detailed description of the example embodiments with reference to the attached drawings.

