Turbocharger heat insulation structure

A technology of turbochargers and turbines, applied in the direction of machines/engines, engine components, mechanical equipment, etc., can solve the problems of increasing parts management costs, increasing the number of parts and mold investment, reducing efficiency, etc., to reduce parts management costs, The effect of reducing the number of assemblies and improving the transfer efficiency

Inactive Publication Date: 2012-03-28
HUNAN TYEN MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The use of heat insulation sleeve structure will bring the following disadvantages: 1. Increase the number of parts and mold investment, which will increase the cost; 2. Increase the number of parts assembled and reduce efficiency; 3. Increase the cost of parts management

Method used

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  • Turbocharger heat insulation structure
  • Turbocharger heat insulation structure
  • Turbocharger heat insulation structure

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Embodiment Construction

[0013] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific illustrations.

[0014] see figure 2 and image 3 , the heat insulation structure of the turbocharger shown in the figure includes a turbine case 10 and a bearing body 20, both of which are cast from the same material.

[0015] A stepped structure 11 is made on the end face of the side where the turbine case 10 is connected to the bearing body 20, and the end face of the turbine end of the bearing body 20 is also arranged as a stepped structure 21, and the stepped structure 11 and the stepped structure 21 are engaged with each other, so that the bearing body The turbine end of 20 is fitly connected with the turbine case 10 through a stepped structure. In order to effectively prevent high-temperature gas from escaping to the compressor end, at the same time, a...

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PUM

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Abstract

The invention discloses a turbocharger heat insulation structure which comprises a turbine box and a bearing box, wherein the turbine end of the bearing body is jointly connected with the turbine box in a step-structure mode, a circulating cooling water cavity is arranged at the inner end side, close to the turbine, of the bearing body, a water inlet and a water outlet which penetrate through the circulating cooling water cavity are arranged on the bearing body, and the bearing body and the water cavity are cast and molded by using the same material. According to the invention, an insulation sleeve structure can be omitted, a joint type contact seal can be designed between the bearing body and the turbine box and the joint position can be designed with a step section so as to reach the sealing effect; the water cavity arranged at the inner end part, close to the turbine, of the bearing body can be used for achieving the heat insulation effect; and the bearing body and the water cavity are cast and molded by using the same material, so that the deformation difference between the bearing body and the water cavity can be lessened. Compared with the prior art, the turbocharger heat insulation structure provided by the invention has the advantages that the management cost of parts can be lowered because insulation sleeve parts and dies are not required; and meanwhile, the part assembly amount can be reduced and the transferred assembly efficiency can be improved, thus the turbocharger heat insulation structure is suitable for popularization.

Description

Technical field: [0001] The invention relates to the technical field of a turbocharger for an internal combustion engine, in particular to a heat insulation structure for a turbocharger. Background technique: [0002] The turbocharger uses the high-temperature and high-pressure exhaust gas discharged from the engine to drive the turbine to work. In order to prevent the heat from being transmitted from the turbine end to the bearing and compressor end, thereby affecting the reliability of the bearing work and reducing the efficiency of the compressor, see figure 1 , A heat insulating sleeve 3 is provided at the joint between the bearing body 1 and the turbine box 2 to reduce heat radiation. [0003] The use of heat insulation sleeve structure will bring the following disadvantages: 1. Increase the number of parts and mold investment, which will increase the cost; 2. Increase the number of parts assembled and reduce efficiency; 3. Increase the cost of parts management. Conte...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01D25/08F01D25/16
Inventor 潘航宇胡辽平邓茂桥刘麟潘伟
Owner HUNAN TYEN MACHINERY
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