Patent ID: 8684688
Filing Date: 2014-04-01
Classification: F04D

Abstract:
1. A series-connected fan frame module comprising: first and second frames each having a first side and a second side spaced along an axis from the first side, with the first and second frames arranged in series with the first side of the first frame facing the second side of the second frame; an engaging assembly arranged on each of the first and second frames to couple the frames in series, with the engaging assembly including a first engaging member on the first side of the first frame and extending from the first side of the first frame past the second side of the second frame and including a second engaging member on the second side of the second frame, with the first engaging member of the first frame engaging the second engaging member of the second frame, wherein the first engaging member is in a form of at least one engaging panel located on the first frame, wherein the second engaging member is in a form of at least one engaging groove located on the second frame and aligned with the at least one engaging panel, wherein the at least one engaging panel has one end coupling with the first frame and another end extending towards the second frame, wherein the at least one engaging panel further includes a side face between two ends thereof, as well as an engaging protrusion protruding from the side face, wherein the engaging protrusion includes an axial engaging face, wherein the second engaging member includes an engaging portion engaged with the axial engaging face, with the engaging portion having an axially extending surface and a radially extending surface, with the side face of the engaging panel of the first engaging member abutting with the axially extending surface of the engaging portion, and with the axial engaging face of the engaging protrusion of the first engaging member abutting with the radially extending surface of the engaging portion; and an anti-rotation assembly arranged on each of the first and second frames and comprising a position-fixing member on the first side of the first frame and a blocking member on the second side of the second frame, with the blocking member of the second frame extending from the second side of the second frame past the first side of the first frame, and wherein the position-fixing member is engaged with the blocking member to prevent relative radial rotation between the first and second frames.