Easily controlled exhaust tube

• US 20030121720A1
• Filed: 01/02/2002
• Published: 07/03/2003
• Est. Priority Date: 01/02/2002
• Status: Active Grant

• Current Assignee: Liang Fei Industry Co., Ltd.
• Original Assignee: Liang Fei Industry Co., Ltd.
• Inventors: Chang, Ming-Tien
• Granted Patent: US 6,708,798 B2
• Time in Patent Office: Days
• US Class Current: 181/254
• CPC Class Codes: F01N 1/082 the gases passing through porous members F01N1/081 takes precedence
• CPC Class Codes: F01N 1/24 by using sound-absorbing materials F01N1/04, F01N1/06, F01N1/10, F01N1/14, F01N1/16 take precedence
• CPC Class Codes: F01N 13/08 Other arrangements or adaptations of exhaust conduits pipes, joints or supports therefor in general F16L; collecting or removing exhaust gases of vehicle engines in workshops B08B15/00, on highways E01C1/005
• CPC Class Codes: F01N 13/087 having valves upstream of silencing apparatus for by-passing at least part of exhaust directly to atmosphere valves for changing gas flow path through the silencer F01N1/166
• CPC Class Codes: F01N 2210/00 Combination of methods of silencing
• CPC Class Codes: F01N 2310/02 Mineral wool, e.g. glass wool, rock wool, asbestos or the like
• CPC Class Codes: F01N 2330/10 Fibrous material, e.g. mineral or metallic wool
• CPC Class Codes: F01N 2410/00 By-passing, at least partially, exhaust from inlet to outlet of apparatus, to atmosphere or to other device
• CPC Class Codes: F01N 2410/10 for reducing flow resistance, e.g. to obtain more engine power
• CPC Class Codes: F01N 2450/24 by bolts, screws, rivets or the like
• CPC Class Codes: F01N 3/0335 with exhaust silencers in a single housing
• CPC Class Codes: Y02T 10/12 Improving ICE efficiencies

Abstract

An easily controlled exhaust tube has a manifold. One end of the manifold is connected to a distal end of a connecting tube. Another ends of the manifold are extended with a left branch tube and a right branch tube. The left branch tube is directly connected to an outer tube of a first noise eliminating tube and the right branch tube is connected to an inner tube of a second noise eliminating tube which has a valve seat. The left and right branch tubes are enclosed by outer tubes. Glass fibers and stainless steel and cotton structure are filled in the outer tube. A connecting piece is welded between the first and second noise eliminating tubes. A valve is installed in the valve seat. A front and a rear sides of the valve seat have respective washers. The valve is controlled by a controller.

Claims

1. An easily controlled exhaust tube having a manifold;

one end of the manifold being connected to a distal end of a connecting tube;

another ends of the manifold being extended with a left branch tube and a right branch tube;

the left branch tube being directly connected to an outer tube of a first noise eliminating tube and the right branch tube being connected to an inner tube of a second noise eliminating tube, the second noise eliminating tube having a valve seat;

a connecting piece being welded between the first and second noise eliminating tubes;

wherein

a valve is installed in the valve seat;

a front and a rear sides of the valve seat have respective washers;

the valve is controlled by a controller.

2. The easily controlled exhaust tube as claimed in claim 1, wherein the left branch tube protrudes from the first noise eliminating tube;

an tube wall of the outer tube has noise eliminating holes; and

stainless steel and cotton structure encloses the left branch tube.

3. The easily controlled exhaust tube as claimed in claim 1, wherein an edge of the right branch tube has a locking seat and the right branch tube is connected to the second noise eliminating tube by using screws.

4. The easily controlled exhaust tube as claimed in claim 1, wherein a front tube wall of the inner tube of the first noise eliminating tube has noise eliminating holes;

then stainless steel and cotton structure encloses the first noise eliminating tube;

an outer tube enclose the section having the stainless steel and cotton structure;

a front isolating tube and the rear isolating tube are installed in the outer tube for installing the left branch tube and the inner tube of the first noise eliminating tube;

glass fibers are filled in the outer tube;

a flowing area is formed between the inner tube of the first noise eliminating tube and the left branch tube;

a rear section of the inner tube of the second noise eliminating tube is engaged with a distal tube.

5. The easily controlled exhaust tube as claimed in claim 1, wherein a front end of the inner tube of the second noise eliminating tube is installed with a locking seat;

two sides of the locking seat are combined to the right branch tube by screws and nuts;

a middle section of the inner tube of the second noise eliminating tube has noise eliminating holes at a tube wall thereof;

stainless steel and cotton structure encloses the noise eliminating holes;

an outer tube encloses the section having the holes;

glass fibers fill the outer tube;

a distal end of the inner tube of the second noise eliminating tube is engaged with a distal tube

6. The easily controlled exhaust tube as claimed in claim 1, wherein the controller has a motor which drives a gear and a switch is used to actuate, stop the motor and control the rotation direction of the motor;

the gear is engaged with a gear on a rotary shaft;

the rotary shaft is combined with the valve.

7. The easily controlled exhaust tube as claimed in claim 1, wherein a connecting piece is welded between the first and second noise eliminating tubes.