Device and method for reducing oil leakage of supercharger compressor

A compressor and supercharger technology, which is applied to the parts of pumping devices for elastic fluids, machines/engines, mechanical equipment, etc., can solve the problems of compressor efficiency reduction and reduce oil leakage and efficiency Influence, strong practical effect

Active Publication Date: 2015-08-05
山东赛马力发电设备有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main disadvantage of using the overlap method to reduce oil leakage is: the high-speed collision and stagnation of the airflow at the overlap produces losses, resulting in a decrease in compressor efficiency

Method used

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  • Device and method for reducing oil leakage of supercharger compressor
  • Device and method for reducing oil leakage of supercharger compressor
  • Device and method for reducing oil leakage of supercharger compressor

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Embodiment Construction

[0021] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0022] The present invention reduces the device of turbocharger compressor oil leakage, such as figure 2 , 3 As shown, it includes a compressor main body mainly composed of an impeller 1, a compressor volute 2 and a compressor back plate 3. At the position of the impeller outlet, the upper end of the compressor back plate 3 protrudes outward, and the size of the protruding part 4 has Continuous and varying degrees, so that the compressor back plate 3 and the impeller 1 overlap to different degrees at the position of the impeller outlet, so that the compressor back plate 3 blocks the air flow at the impeller outlet to different degrees.

[0023] The distribution of the outlet pressure of the compressor impeller varies along the circumferential direction. In order to achieve small or no overlap at positions with small oil leakage and...

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Abstract

The invention relates to a device and method for reducing oil leakage of a supercharger compressor. The device comprises a compressor body mainly composed of an impeller, a compressor volute and a compressor back plate. The device is characterized in that at the outlet position of the impeller, the upper end face of the compressor back plate protrudes outwards, the size of the protruding part has continuous changes of different degrees, and therefore the compressor back plate and the impeller overlap to different degrees at the outlet position of the impeller, and the compressor back plate blocks gas flow the outlet of the impeller to different degrees. By means of the device, the influences on the efficiency of the compressor can be reduced while the oil leakage of the compressor is reduced.

Description

technical field [0001] The invention relates to the technical field of supercharger manufacturing, in particular to a device and method for reducing oil leakage of a supercharger compressor. Background technique [0002] Supercharger compressor oil leakage means that the lubricating oil used by the supercharger bearing passes through the back plate of the compressor impeller, leaks to the outlet of the compressor impeller, and then leaks from the compressor outlet to the engine intake. This kind of oil leakage is easy to occur when the compressor works at a low pressure ratio and a large flow rate. For natural gas engines converted from diesel engines, oil leakage may occur due to the decrease in the operating speed of the compressor and the decrease in the pressure ratio of the compressor. [0003] In the prior art, a commonly used method for reducing oil leakage is to allow a small amount of overlap between the outlet of the impeller and the volute or intermediate body of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D29/16
CPCF04D29/161F05D2250/52F04D29/441
Inventor 殷爱军陈化曹政坤侯跃艳朱洪春陈光亮赖艳华程晶晶李国祥诸葛伟林
Owner 山东赛马力发电设备有限公司
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