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. 18, 2022
Filed:
Jul. 02, 2018
Ka Group Ag, Zürich, CH;
Florian Weinzierl, Olching, DE;
Dumitru-Cristian Leu, Rottenburg am Neckar, DE;
Winfried Helmenstein, Gelnhausen, DE;
KA Group AG, Zürich, CH;
Abstract
The invention relates to a housing () for a fluid machine, in particular for a radial fan (), comprising at least one housing part (), wherein the housing part () has at least one inlet opening (), wherein the housing part () can at least partially delimit a fluid chamber () for receiving at least one fan wheel (), and wherein the inlet opening (), at least in part, has a curved inlet surface (). To produce a housing () for a fluid machine, in particular a housing () for a radial fan, preferably for use in a car seat and offering reduced noise emission together with good performance, the curved inlet surface () has at least in part the form of a logarithmic spiral in cross-section, and/or at least one guide element () extends from the inlet surface () towards a central axis of the inlet opening (), and/or on the inside () of the housing part () there is provided a circumferential recess () which at least partially circumferentially surrounds the inlet opening () and/or a circumferential projection () which at least partially surrounds the inlet opening.