US 2019/0376523 A1Published application

Centrifugal fan

AssigneeMINEBEA MITSUMI Inc.

InventorsTakuji YAMADA, Masaaki MATSUBARA, Seiya FUJIMOTO, Kiyohisa NARA

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Abstract

The application provides a centrifugal fan that can be easily positioned when it is installed in a device or apparatus, which can further improve positioning accuracy, and which can decrease noise, even if it is made thin. In the centrifugal fan in which an impeller is received inside a casing and air drawn in from a suction port formed on the casing by rotating the impeller is discharged from the casing to the outside of a blowing port, a circular protruded portion is formed on a peripheral edge of the suction port, and protrudes upwardly in a shaft direction from an upper surface of the casing.

Claims5

Dependent claims

A centrifugal fan comprising:

a casing formed by a lower casing and an upper casing having a suction port;
pillars interposed between the lower casing and the upper casing;
an impeller housed in the casing and having a circular shroud, a main plate,
and blades arranged between the circular shroud and the main plate;
and a motor for rotating the impeller;
wherein a circular protruded portion for engaging with an object in which the centrifugal fan is installed is formed on a peripheral edge of the suction port, multiple concavities are formed on an upper surface of the upper casing and arranged outside the circular protruded portion,
wherein the circular protruded portion protrudes upwardly in a shaft direction from the upper surface of the upper casing, and
air sucked from the suction port by rotating the impeller is discharged from a blowing port formed between the upper casing and the lower casing.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application: 16/546,474Filed 21 Aug 2019
Priority: JP 2015-20900423 Oct 2015
Published: 12 Dec 2019
Term ends: Not estimatedThe source records don’t support an estimate.

Classification9 codes

F04D 29/162
Especially adapted for elastic fluid pumps: of a centrifugal flow wheel
F04D 29/601
Mounting; Assembling; Disassembling: specially adapted for elastic fluid pumps
F04D 25/06
Units comprising pumps and their driving means: the pump being electrically driven
F04D 25/0613
The electric motor being specially adapted for integration in the pump: the electric motor being of the inside-out type, i.e. the rotor is…

Family

Application15/298,778Continuation · filed 20 Oct 2016
Application16/546,474Continuation
US 10,428,827 B2Related patent
US 2017/0114791 A1Published application
US 2019/0376523 A1This patent

From the US filing history. Foreign family members aren’t listed.

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