High-pressure fan

• US 6,340,288 B1
• Filed: 07/02/1999
• Issued: 01/22/2002
• Est. Priority Date: 01/17/1997
• Status: Expired due to Term

• Current Assignee: Solyvent Flakt AB
• Original Assignee: ABB Flakt Oy (ABB Limited)
• Inventors: Hulkkonen, Rauli T, Vuorenmaa, Jyri-Markku, Tallgren, Joni A
• Primary Examiner(s): Look, Edward K.
• Assistant Examiner(s): Nguyen, Ninh
• Application Number:
  US09/341,107
• Time in Patent Office: 935 Days
• Field of Search: 415/99, 415/100, 415/101, 415/102, 415/103, 415/199.1, 415/200, 416/230, 416/241.A, 417/244, 417/350, 417/423.5
• US Class Current: 415/199.1
• CPC Class Codes: F04D 25/166 using fans
• CPC Class Codes: F04D 29/023 especially adapted for elastic fluid pumps
• CPC Class Codes: F05D 2300/603 Composites; e.g. fibre-reinforced

Abstract

A high-pressure fan comprising a blade wheel (3, 4), a fan housing (5, 6) surrounding the blade wheel and an electric motor (1) to operate the blade wheel. To eliminate the problems related to the mounting of the blade wheel, the blade wheel (3, 4) at least mainly consists of light carbon fiber based composite material and is directly mounted on the shaft (2) of the electric motor.

Claims

1. A high-pressure fan comprising a blade wheel, a first fan housing surrounding the blade wheel, and an electric motor to operate the blade wheel, said electric motor having a shaft projecting from one end thereof, and wherein said blade wheel substantially consists of carbon-fibre-based composite material, and is mounted directly, without additional bearings, on said one end of the shaft.

2. A high-pressure fan as claimed in claim 1, wherein the shaft extends through the electric motor, projecting also from an opposite end of the electric motor with a second blade wheel mounted directly, without additional bearings, on said opposite end of said shaft.

3. A high-pressure fan as claimed in claim 2, wherein a second fan housing surrounds the second blade wheel, said first and second fan housings interconnected by an intermediate channel.

4. A high-pressure fan as claimed in claim 3, wherein said intermediate channel leads from a pressure opening of one of the housings to a suction opening of the other housing.