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Turbocompressor with adapted meridian contour of blades and compressor wall

A technology of turbo compressors, compressors, applied in the direction of machines/engines, components of pumping devices for elastic fluids, mechanical equipment, etc.

Active Publication Date: 2021-07-23
EBM PAPST MULFINGEN GMBH & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Both efficiency and pressure build-up should be improved

Method used

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  • Turbocompressor with adapted meridian contour of blades and compressor wall
  • Turbocompressor with adapted meridian contour of blades and compressor wall
  • Turbocompressor with adapted meridian contour of blades and compressor wall

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0025] exist figure 1 with figure 2 The turbocompressor 1 schematically shows a section cut along a meridian plane. Only the area of ​​the turbocompressor relevant to the invention is shown; otherwise, a person skilled in the art can reconstruct it from structures known from the prior art.

[0026] The turbocompressor 1 comprises a compressor housing 2 and a compressor wheel 4 having blades 5 distributed in the circumferential direction. The compressor wheel is Figure 4 shown in . Said compressor wheel 4 is driven by an electric motor (not shown) in rotation about an axis of rotation RA. The compressor wheel 4 sucks in air axially and discharges it radially. The corresponding main airflow HS is at figure 2 shown in .

[0027] Between the fixed housing wall 3 of the compressor housing 2 and the blade upper edges of the blades 5 there is provided a top gap 7 which enables the rotation of the compressor wheel 4 . The upper edges of the blades are not covered, ie not co...

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PUM

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Abstract

The invention relates to a turbocompressor (1) comprising a compressor housing (2) and a compressor wheel (4) with blades (5). The compressor wheel (4) is rotatably mounted relative to the compressor housing (2) and is spaced by a head gap (7) which is arranged between the exposed upper edges of the blades (5) and the compressor wall (3) of the the compressor housing (2) facing the blade upper edges, wherein both the upper edges of the blades (5) as well as the housing wall (3) have at least one recess (11, 13) interacting locally and mutually and at least one elevation (10, 14) over the respective Meridian contour, such that the head gap (7) defines a Z-shaped course in the region of the recesses (11, 13) and the elevations (10, 14) when viewed on a Meridian plane.

Description

technical field [0001] The invention relates to a turbo compressor with a compressor housing and a compressor wheel with blades, wherein the compressor wheel is rotatable relative to the compressor housing mounted and spaced apart by a top gap between the unshrouded upper edge of the blade and the compressor wall of the compressor casing facing the upper edge of the blade. Background technique [0002] In turbocompressors according to the prior art, a compressor wheel equipped with blades rotates relative to a stationary compressor housing and generates a main flow of axial suction and radial discharge. A head gap is provided between the blades of the compressor wheel and the housing wall, which is kept as small as possible and enables contact-free rotation of the compressor wheel. The top gap extends in the meridian plane of the compressor wheel along the vane upper edge and the casing wall, wherein both the casing wall and the vane upper edge have a gap from the axial suc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D29/16F04D29/28F04D29/30F04D29/68
CPCF04D29/284F04D29/30F05D2240/307F05D2250/75F05D2250/183F04D29/685F04D29/162Y02T10/12F04D19/002F04D29/181F04D29/522
Inventor M·恩格特A·克洛斯特曼D·康拉德
Owner EBM PAPST MULFINGEN GMBH & CO KG