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Die cast compressor housing for centrifugal compressors with a true volute shape

A technology of compressor casing and compressor impeller, which is applied to components of pumping devices for elastic fluids, machines/engines, mechanical equipment, etc., can solve problems such as inability to obtain outlet conduits and deterioration of aerodynamic performance.

Inactive Publication Date: 2006-08-16
HONEYWELL INT INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Previously, die casting could not be used because the true volute shape of the outlet duct could not be obtained, which deteriorated the aerodynamic performance

Method used

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  • Die cast compressor housing for centrifugal compressors with a true volute shape
  • Die cast compressor housing for centrifugal compressors with a true volute shape
  • Die cast compressor housing for centrifugal compressors with a true volute shape

Examples

Experimental program
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Effect test

Embodiment Construction

[0012] The invention relates to a casing of a radial compressor. The compressor comprises an outer shell 10 of the housing, an inlet and diffuser wall insert 12 and a rear plate 14 . The outlet connection 16 of the compressor housing is connected to the intake manifold of the engine or other device receiving compressed air. Compressed air enters through inlet 18, best see figure 1 .

[0013] In addition to the air inlet, the insert 12 comprises a first part providing an inlet wall 20 adjacent to a compressor wheel (not shown) which is rotatable about an axis A. As shown in FIG. The second portion of the insert provides a radially extending surface substantially perpendicular to the axis of rotation of the impeller, thereby forming the diffuser outer wall 24 . The second portion also forms the volute inner wall portion 26 and extends along the first protrusion 28 to form part of the volute inner circumferential wall. The first part of the insert is substantially cylindrical...

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Abstract

A die cast compressor housing includes an outer shell (10) having a partial outer circumferencial volute wall (32) portion and a projection (34) surrounding the circumference of an aperture (30) in the shell (10) that mates with an insert (12) having a first portion with a substantially cylindrical outer wall that is received in the aperture (30) in the outer shell (10) and includes an air inlet. The insert (12) has a second portion extending radially outwardly and including a mating projection (28) for engagement with the outer shell projection (34) to form an inner circumferencial volute wall portion. A backplate (14) has a third projection (38) adjacent its outer circumference that is received in a relief (40) in the outer shell (10) and completes the outer circumferencial volute wall portion. The outer shell projection (34) has a first land (70) engaging a second land (72) on the mating projection, the first and second lands (70, 72) spirally descending relative to a datum (45) and the relief (40) has a third land (76) in spaced relation to a fourth land (74) on the third projection (38), the third and fourth lands (76, 74) spirally descending respectively relative to the datum (45).

Description

technical field [0001] The present invention relates generally to cast compressor housings for centrifugal compressors. In particular, the present invention provides a die casting and method for forming a casing having the true volute shape of a compressor outlet. Background technique [0002] Housings for radial compressors are generally cast aluminum parts manufactured using sand casting or P-mold techniques because the volute shape is required in the compressor outlet duct for aerodynamic performance. Previously, die casting could not be used because the true volute shape of the outlet duct could not be obtained, which deteriorated the aerodynamic performance. [0003] Die casting is ideal for mass production because of the inherent dimensional stability and reproducibility and material properties of castings that can be obtained by means of die casting aluminum. Contrary to other techniques, it is easier to achieve smaller tolerances and net shape requirements with die...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04D29/42F04D29/44F04D29/62
CPCF04D29/441F04D29/624F04D29/023F04D29/4206F05D2230/21F04D29/42
Inventor G·A·阿德夫C·S·马尔
Owner HONEYWELL INT INC
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