Unlock instant, AI-driven research and patent intelligence for your innovation.

Catalytic silencer capable of reducing temperature of exhaust gas

A technology of exhaust gas and muffler, which is applied in the direction of muffler, gas channel, exhaust device, etc., can solve the problems of complex structure and insufficient cooling effect, and achieve the effect of good cooling effect, low temperature and simple structure

Inactive Publication Date: 2012-10-10
ZHEJIANG YAT ELECTRICAL APPLIANCE CO LTD
View PDF7 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It has a certain cooling effect, but its structure is complex, and the cooling effect is not good enough

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Catalytic silencer capable of reducing temperature of exhaust gas
  • Catalytic silencer capable of reducing temperature of exhaust gas
  • Catalytic silencer capable of reducing temperature of exhaust gas

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] like image 3 As shown, the exhaust port 12 located in front of the muffler 1 is moved backward relative to the exhaust direction image 3 In the position A shown, add the exhaust mixing channel B, and set the air inlet C at the end of the exhaust mixing channel (the exhaust port 12 is located on the lower side of the front end of the housing 11, the muffler 1 is located at the front of the housing, and the muffler and The inner wall of the shell is surrounded by a U-shaped channel, the exhaust port 13 is set on the bottom surface of the rear part of the muffler and the exhaust port faces the front, and the air inlet 14 is set on the middle and lower side of the rear part of the shell), using the cooling air of the engine and the exhaust gas discharged at high speed The static pressure effect formed at the end of the exhaust mixing channel makes the air at normal temperature enter the exhaust mixing channel and mix with the high-temperature exhaust gas before being disc...

Embodiment 2

[0024] like Figure 4 As shown, the exhaust port 12 located in front of the muffler 1 is moved backward relative to the exhaust direction Figure 4 In the position D shown, add the exhaust mixing channel E, and set the air inlet F at the end of the channel (the exhaust port 12 is set on the lower side of the front end of the shell 11, the muffler 1 is set at the front part of the shell, the muffler and the inner wall of the shell It forms a U-shaped channel, the exhaust port 13 is located at the rear end of the muffler and the exhaust port faces downward, and the air inlet 14 is located on the upper side of the rear part of the housing), using the cooling wind of the engine and the exhaust gas discharged at high speed in the channel The static pressure effect formed at the end makes the air at normal temperature enter the exhaust mixing channel and mix with the high-temperature exhaust gas before being discharged, which effectively reduces the temperature of the exhaust gas. ...

Embodiment 3

[0026] like Figure 5 As shown, the exhaust port 12 located in front of the muffler 1 is moved backward relative to the exhaust direction Figure 5 In the position G shown, the exhaust mixing channel D is added, and the air inlet T is set at the end of the channel (the exhaust port 12 is set on the lower side of the front end of the shell 11, the muffler 1 is set in the middle of the shell, and the muffler is surrounded by the inner wall of the shell. It forms an annular channel, the exhaust port 13 is set on the top surface of the rear of the muffler and the exhaust port faces forward, and the air inlet 14 is set on the upper side of the rear of the housing), using the cooling wind of the engine and the exhaust gas discharged at high speed to form at the end of the channel The static pressure effect makes the air at normal temperature enter the exhaust mixing channel and mix with the high-temperature exhaust gas before being discharged, which effectively reduces the temperatu...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a catalytic silencer capable of reducing the temperature of exhaust gas. The catalytic silencer comprises a silencer body and a casing surrounding the silencer body; the silencer body is provided with an waste gas opening; an exhaust opening is formed in the front end of the casing; the waste gas opening is formed in the rear part of the silencer body; an air inlet is formed in the rear part of the casing and is communicated with a cooling air outlet of an engine; an exhaust mixing channel is formed between the waste gas opening and the air inlet, so that cooling air discharged by the engine can enter the exhaust mixing channel and is discharged from the exhaust opening after producing a static pressure effect with and being fully mixed with high-temperature waste gas discharged from the waste gas opening. According to the invention, cooling air of the engine and waste gas discharged from the silencer at a high speed produce a static pressure effect at the tail end of the exhaust mixing channel, and then ordinary-temperature air enters the exhaust mixing channel and is discharged after being mixed with high-temperature waste gas, so that the temperature of exhaust gas can be lowered effectively, and the advantages of simple structure and good temperature reduction effect can be achieved.

Description

technical field [0001] The invention relates to a catalytic silencer of a hand-held garden tool powered by a gasoline engine. Background technique [0002] Hand-held garden tools powered by gasoline engines produced in foreign and domestic industries, in order to meet emission standards, add catalysts to the muffler, and all face the problem of excessive exhaust gas temperature. [0003] The Chinese utility model patent with the publication number CN201428497 disclosed on March 24, 2010 a structural improvement of a catalyst muffler. The processing device, the inlet end of the processing device communicates with the air inlet chamber, the outlet end communicates with the outlet end of the inlet chamber, the outlet end of the inlet chamber communicates with the inlet end of the exhaust chamber, and the outlet of the exhaust chamber The gas outlet is connected with the gas outlet, and the gas outlet discharges the waste gas. At least one high-temperature chamber is nested in ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): F01N3/05F01N13/00
CPCF01N2470/18F01N1/00F01N2590/06F01N3/05F01N2230/04F01N3/34F01N13/082Y02T10/12
Inventor 李志军孙海燕祁根良余剑熊建翟建辉
Owner ZHEJIANG YAT ELECTRICAL APPLIANCE CO LTD