The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 31, 2023
Filed:
Dec. 15, 2021
Mitsubishi Electric Corporation, Tokyo, JP;
Takuya Teramoto, Tokyo, JP;
Ryo Horie, Tokyo, JP;
Takahiro Yamatani, Tokyo, JP;
Kazuya Michikami, Tokyo, JP;
Hiroshi Tsutsumi, Tokyo, JP;
Keijiro Yamaguchi, Tokyo, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
A centrifugal air blower comprises a fan (); and a scroll casing (). The scroll casing includes: a sidewall () covering the fan () from an axial direction of a rotation axis on which the fan () rotates, the side wall having a suction opening for sucking air; a discharge opening () for discharging an airflow generated by the fan (); a tongue portion () for guiding the airflow to the discharge opening (); a peripheral wall () surrounding the fan () from a radial direction of the rotation axis; and a bell mouth () formed along the suction opening () of the sidewall (). The bell mouth () includes an upstream end () and a downstream end (), the upstream end being an end portion on an upstream side in a direction of flow of the air passing through the suction opening (), the downstream end being an end portion on a downstream side in the direction of flow of the air. A distance in the radial direction of the rotation shaft between the upstream end () and the downstream end () at a location larger than the tongue portion () in angle of a direction of rotation of the fan () is longer than a distance in the radial direction between the upstream end () and the downstream () end at a location adjacent to the tongue portion ().