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Compressor housing for turbocharger and method for manufacturing same

A technology for compressor housings and manufacturing methods, applied to machines/engines, parts of pumping devices for elastic fluids, mechanical equipment, etc., can solve problems such as contact and impeller damage, and reduce manufacturing costs and lighten installation homework, the effect of reducing the number

Inactive Publication Date: 2017-05-03
OTICS CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the clearance is reduced, the blades of the impeller may come into contact with the shroud surface of the compressor casing due to, for example, vibration or runout of the rotating shaft of the impeller.
In this case there is a concern of impeller breakage

Method used

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  • Compressor housing for turbocharger and method for manufacturing same
  • Compressor housing for turbocharger and method for manufacturing same
  • Compressor housing for turbocharger and method for manufacturing same

Examples

Experimental program
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Effect test

Embodiment 1

[0042] Next, use Figure 1 to Figure 5 An example of the above-mentioned compressor casing for a supercharger and a method of manufacturing the same will be described.

[0043] The compressor housing 1 for a supercharger of this example is configured to be able to accommodate the impeller 5 for a supercharger having a plurality of blades 52, and is equipped with an air inlet 11 for sucking air A1 into the impeller 5, and an air inlet 11 for introducing the slave impeller. 5, the vortex chamber 12 of the discharged air, and the shroud surface 320 facing the impeller 5.

[0044] Further, the compressor housing 1 for a supercharger includes a scroll member 2 , a shroud member 3 , and a slide member 32 .

[0045] The scroll member 2 includes an intake port forming portion 21 forming the intake port 11 , a wall surface 121 on the intake side of the scroll chamber 12 , and a scroll outer peripheral portion 23 covering the outer peripheral side of the scroll chamber 12 .

[0046] T...

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Abstract

The invention provides a compressor housing for a turbocharger and a method for manufacturing the same. The method is high in production rate and strives to reduce manufacturing cost. The The method for manufacturing the compressor housing for a turbocharger includes first procedure to fourth procedure: in the first procedure, preparing a scroll piece having an intake port forming portion forming an intake port, an intake-side wall surface of a scroll chamber, and a scroll outer peripheral portion covering an outer peripheral side of the scroll chamber; in a second procedure, preparing a shroud piece having a cylindrical shroud press-fit portion to be press fitted into the intake port forming portion, an inner circumferential wall surface of the scroll chamber, and a recessed portion formed on a wall surface covering an outer peripheral side of an impeller; in a third procedure, forming a sliding component having a shroud surface by injection molding of resin into the recessed portion; a fourth procedure, and press fitting the shroud press-fit portion into the intake port forming portion.

Description

technical field [0001] The present invention relates to a compressor housing for a supercharger and a method of manufacturing the same. Background technique [0002] Compressors used in superchargers such as automotive turbochargers can improve intake air compression efficiency by reducing the gap between the impeller and the shroud surface facing the impeller as much as possible. However, if the gap is reduced, the blades of the impeller may come into contact with the shroud surface of the compressor casing due to, for example, vibration or runout of the impeller rotating shaft. In this case, there is a concern of impeller breakage. [0003] Therefore, conventionally, there has been a structure in which a resin-made sliding member is disposed on a portion constituting the shroud surface of the compressor housing. Even if the blades of the impeller come into contact with the shroud surface, the gap between the impeller and the shroud surface can be kept small by merely cut...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D29/42B29C45/14
CPCB29C45/14336F04D29/4206F01D9/026F01D11/122F04D29/023F04D29/162F05D2220/40B23P15/00B29C45/00F05D2230/21F05D2300/434B29C45/1459B29C45/14311F02B37/025F04D17/10F04D29/08F04D29/284F04D29/624
Inventor 丹羽哲也樱井雅英矶谷知之前田治米泽幸一
Owner OTICS CORP
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