Title:
BLOWER DEVICE AND REFRIGERATOR INCLUDING THE SAME
Document Type and Number:
Japanese Patent JP2018066346
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To suppress noise in a blower device, with respect to the centrifugal blower device with two tongue portions, in which noises are simultaneously generated from two tongue portions as when one blade passes near a radial inner side of one tongue portion, the other blade also passes near a radial inner side of the other tongue portion.SOLUTION: A blower device includes an impeller 10 rotated around a center shaft C, and a housing 2 accommodating the impeller and configuring a duct 5, the impeller has a plurality of blades 12, radial inner ends of the blades are disposed at a front side in a rotating direction of the impeller with respect to radial outer ends of the blades, the housing has tongue portions 25 respectively between the impeller and a plurality of exhaust portions, and a center angle φ and a center angle θ are different from each other when the center angle between radial outer ends of arbitrary two blades on the center shaft as a center, is φ, and the center angle between closest points to the blade of arbitrary two tongue portions is θ.SELECTED DRAWING: Figure 9
Inventors:
DOGE ATSUSHI
Application Number:
JP2016206522A
Publication Date:
April 26, 2018
Filing Date:
October 21, 2016
Export Citation:
Assignee:
NIHON DENSAN KK
International Classes:
F04D29/44; F04D29/28; F25D11/00; F25D17/06; F25D19/00
Domestic Patent References:
| JP2001317494A | 2001-11-16 | |||
| JP2002285999A | 2002-10-03 | |||
| JP2002161895A | 2002-06-07 | |||
| JPS5566695A | 1980-05-20 | |||
| JP2003278694A | 2003-10-02 |