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:
Nov. 21, 2023
Filed:
Mar. 28, 2023
Daikin Industries, Ltd., Osaka, JP;
Daikin Industries, Ltd., Osaka, JP;
Abstract
A fan unit includes a centrifugal fan, an air flow volume detector, and a main body casing housing the centrifugal fan and the air flow volume detector. The centrifugal fan includes a fan casing and a rotor. The air flow volume detector includes main body, and a probe that detects an air flow volume equivalent quantity equivalent to an air flow volume provided by the centrifugal fan. The fan casing includes a bell mouth defining an air inlet and having a convex surface. A distance from the probe to the surface of the bell mouth is larger than 0 and smaller than one third of a radius of the air inlet. A thermal air velocity sensor detects, as the air flow volume equivalent quantity, an air velocity of air flowing through the air inlet not connected to a duct by measuring an amount of heat dissipated from the probe.