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Multi-channel gas mixer

A gas mixer and mixer technology, used in exhaust gas recirculation, machine/engine, oil supply device, etc., can solve the problem of difficult gas mixing uniformity inlet and outlet pressure loss, increased inlet and outlet pressure loss of the mixer, and windward Large area and other problems, to achieve the effect of reducing the windward area, improving the uniformity, and reducing the cross-sectional area of ​​the flow

Inactive Publication Date: 2021-07-02
WEICHAI POWER CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to improve the mixing effect, the existing mixer technology has a complex structure, high cost, and a large windward area, which increases the pressure loss at the inlet and outlet of the mixer.
In order to increase the EGR rate of some mixers, the pressure loss at the inlet and outlet of the mixer increases with the increase of the windward area
Therefore, the existing mixer technology is difficult to improve the uniformity of gas mixing while reducing the pressure loss at the inlet and outlet

Method used

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Embodiment Construction

[0042] In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only some of the embodiments of the present invention, rather than all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0043] The term "and / or" in the embodiments of the present invention describes the association relationship of associated objects, indicating that there may be three relationships, for example, A and / or B, which may mean: A exists alone, A and B exist simultaneously, and B exists alone These three situations. The character " / " generally indicates that the contextual objects are an "or" relationship.

[0044] The application scenarios d...

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Abstract

The invention discloses a multi-channel gas mixer. The multi-channel gas mixer is used for improving the gas mixing uniformity and reducing the pressure loss of an inlet and an outlet of the mixer. The multi-channel gas mixer comprises a shell, a spray pipe and a diffuser pipe, a channel is formed in the shell, and the shell is provided with a gas inlet communicating with the channel. The spray pipe is provided with at least three first sub-channels. The diffuser pipe is internally provided with second sub-channels in one-to-one correspondence with the first sub-channels, each pair of corresponding first sub-channel and second sub-channel is matched to form a premixing cavity, and the first sub-channel of each premixing cavity is provided with an air inlet and a natural gas inlet. A waste gas inlet is formed in the matching part of each first sub-channel and each second sub-channel.

Description

technical field [0001] The invention relates to the technical field of exhaust gas recirculation systems, in particular to a multi-channel gas mixer. Background technique [0002] Exhaust Gas Recirculation (EGR) system is recognized by the industry as an effective measure to reduce the original emissions of the engine. With the upgrading of emission regulations, the demand for EGR rate is getting higher and higher, and the key is how to obtain higher EGR. At the same time, for natural gas engines, the mixing uniformity of natural gas, air, and exhaust gas (EGR) is also very important, which has a significant impact on the power, economy, emissions, and cycle changes of the engine. [0003] In a natural gas engine, the component responsible for gas mixing is the gas mixer located after the throttle valve and before the intake manifold. The gas mixer not only needs to meet the mixing uniformity requirements of the three gases (ie, natural gas, air and exhaust gas), but also ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02M26/19F02M21/04
CPCF02M26/19F02M21/042Y02T10/30
Inventor 徐帅卿鲁成王雪鹏
Owner WEICHAI POWER CO LTD
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