IMPELLER WITH SEALING PORTION

• US 20140154078A1
• Filed: 11/20/2013
• Published: 06/05/2014
• Est. Priority Date: 11/30/2012
• Status: Active Grant

• Current Assignee: Hanwha Aerospace Co., Ltd. (Hanwha Corporation)
• Original Assignee: Samsung Techwin Corporation (Hanwha Corporation)
• Inventors: AHN, Jong-Kee
• Granted Patent: US 9,708,921 B2
• Time in Patent Office: Days
• US Class Current: 416/174
• CPC Class Codes: F01D 1/023 the working-fluid being divided into several separate flows F01D3/02 takes precedence; several separate fluid flows being united in a single flow; the machine or engine having provision for two or more different possible fluid flow paths
• CPC Class Codes: F01D 1/32 with pressure velocity transformation exclusively in rotor, e.g. the rotor rotating under the influence of jets issuing from the rotor, e.g. Heron turbines the working fluid being a combustion products F02C3/165; jet propulsion plants per se F02K
• CPC Class Codes: F01D 11/00 Preventing or minimising internal leakage of working-fluid, e.g. between stages sealings in general F16J ; sealing arrangements for transition ducts of combustor cans F01D9/023
• CPC Class Codes: F01D 5/021 for flow machines or engines with only one axial stage for more than one stage F01D5/06
• CPC Class Codes: F04D 29/162 of a centrifugal flow wheel

Abstract

There is provided an impeller rotating about a rotary shaft, the impeller including: an inlet through which a fluid is introduced; an outlet through which the fluid is discharged; a supporter connected to the rotary shaft; a blade portion provided on the supporter; a shroud portion disposed to cover the blade portion; and a sealing portion including at least one sealing protrusion protruding in a direction that is in parallel with the rotary shaft, and disposed at a portion of the shroud portion, which configures the inlet.

Claims

1. An impeller rotating about a rotary shaft, the impeller comprising:

an inlet through which a fluid is introduced;

an outlet through which the fluid is discharged;

a supporter connected to the rotary shaft;

a blade portion provided on the supporter;

a shroud portion disposed to cover the blade portion; and

a sealing portion including at least one sealing protrusion protruding in a direction that is in parallel with the rotary shaft, and disposed at a portion of the shroud portion, which configures the inlet.

2. The impeller of claim 1, wherein the impeller is provided in a compressor or a pump.

3. The impeller of claim 1, wherein the sealing protrusion is disposed above a topmost portion of the supporter where the inlet is disposed.

4. The impeller of claim 3, wherein a bonding portion, where the sealing portion and the shroud portion are bonded to each other, is disposed above the topmost portion of the supporter where the inlet is disposed.

5. The impeller of claim 1, wherein the sealing portion has a ring shape.

7. The impeller of claim 1, wherein the topmost portion of the sealing portion comprises at least one sealing protrusion.

8. The impeller of claim 1, wherein the shroud portion and the sealing portion constitutes a single body.

6. An impeller rotating about a rotary shaft, the impeller comprising:

an inlet through which a fluid is introduced;

an outlet through which the fluid is discharged;

a supporter configured to rotate when the rotary shaft rotates;

a blade portion provided on the supporter;

a shroud portion disposed to cover the blade portion; and

a sealing portion disposed at a portion of the shroud portion which configures the inlet along with a topmost portion of the supporter, wherein a topmost portion of the sealing portion is higher than the topmost portion of the supporter.