Fixing Device of Catalyst Substrate
A fixing device includes a muffler and a catalyst mantle. The muffler is communicated with an exhausting route of an internal combustion engine. The muffler has at least one clapboard to divide inner space thereof for forming a plurality of expanding rooms, which are communicated with each other and configured for guiding waste gas. The catalyst mantle is integrated on the clapboard. The catalyst mantle has an admission terminal and an exhaust terminal communicated with the plurality of expanding rooms. A substrate having catalyst coated thereon is arranged in the catalyst mantle between the admission terminal and the exhaust terminal. At least one block is configured for preventing the substrate sliding to the exhaust terminal and a stopper is formed on the clapboard or an inner wall of the muffler for preventing the substrate sliding to the admission terminal. The fixing device improves the fixing capacity of the substrate, and decreases the manufacturing steps for arranging the catalyst mantle in the muffler.
The present invention relates to a catalytic converter arranged in a muffler of an internal combustion engine, and more particularly to a fixing device of catalyst substrate preventing the catalyst substrate of the catalyst converter sliding to a guiding or an exhausting direction.
2. DESCRIPTION OF THE RELATED ARTFor satisfying increasingly strict standard for exhausting waste gas, manufacturers generally use at least one catalytic converter arranged in an exhausting route of an internal combustion engine which is arranged in cars, motorcycles or mowers, etc. The catalytic converter has a metal mantle and at least one metal substrate having catalyst coated thereon. The catalyst generally is selected from a group of noble metal consisting of palladium (Pd), platinum (Pt), rhodium (Rh), etc., for cleaning the waste gas and reducing the pollution of the waste gas.
The metal substrate is generally formed by welding and coupling a flat foil and a corrugated foil, and being rolled to be a turbination for being inserted into the metal mantle. Then the metal substrate is welded with the metal mantle to be integrated for forming a plurality of exhausting routes for exhausting the waste gas therein.
However, the cost is high by welding the flat foil and the corrugated foil of the metal substrate, and welding the metal substrate and the metal mantle. To solve the problem, a patent of Taiwan Patent No 386571 discloses a technology for fixing the metal substrate in the metal mantle. The technology includes a plurality of fixing holes arranged in two terminals of the metal mantle for containing the metal substrate, respectively, a fixing frame arranged between the plurality of fixing holes to prevent the metal substrate sliding out of the metal mantle because of high temperature, shaking or blowing by the waste gas, and prevent the catalyst coated on the metal substrate losing because of rubbing or impacting. However, the technology must further form the plurality of fixing holes and the fixing frame, and therefore, the steps of the technology are increased. Furthermore, when the metal mantle is arranged on the exhausting route of a muffler, the metal mantle must be welded to be fixed on a clapboard of the muffler; thus, the steps and the costs are also increased.
What is needed, therefore, is a fixing device of catalyst substrate, which can solve the above problems.
BRIEF SUMMARYThe present invention is providing a fixing device of catalyst substrate so that the catalyst substrate can be fixedly secured in muffler.
A fixing device of catalyst substrate, in accordance with a preferred embodiment of the present invention, includes a muffler and a catalyst mantle. The muffler is communicated with an exhausting route of an internal combustion engine. The muffler has at least one clapboard to divide inner space thereof for forming a plurality of expanding rooms, which are communicated with each other and configured for guiding waste gas. The catalyst mantle is integrated on the clapboard. The catalyst mantle has an admission terminal and an exhaust terminal communicated with the plurality of expanding rooms. A substrate having catalyst coated thereon is arranged in the catalyst mantle between the admission terminal and the exhaust terminal. The catalyst mantle further includes at least one block configured for preventing the substrate sliding to the exhaust terminal.
The present invention further includes the following features.
The block is a baring pole integrated on the exhaust terminal of the catalyst mantle. The baring pole is selected from a group consisting of intersecting-shape, arc-shape, and fin-shape.
The block is scraggy or corrugated, and has at least one groove attached on the substrate for preventing the substrate sliding, and at least one protrusion spacing from the groove to form a vent hole.
The block also may be formed on the clapboard and integrated with the clapboard.
Therefore, the present fixing device decreases the steps for fixing the substrate in the metal mantle to increase the fixing capacity of the substrate, and integrates the clapboard in the muffler to decrease the steps for arranging the catalyst converter in the muffler and increase the efficiency for assembling the catalyst substrate and the catalyst mantle in the muffler.
Other objects, advantages and novel features of the invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings, in which:
These and other features and advantages of the various embodiments disclosed herein will be better understood with respect to the following description and drawings, in which like numbers refer to like parts throughout, and in which:
Reference will now be made to the drawings to describe a preferred embodiment of the present fixing device of catalyst substrate, in detail.
Referring to
The muffler 1 is communicated with an exhausting route 10 of an internal combustion engine of a vehicle. The muffler 1 has at least one clapboard 2 (as shown in
The catalyst mantle 3 is integrated on the clapboard 2. The catalyst mantle 3 has an admission terminal 31 and an exhaust terminal 32 formed thereon and communicated between the first expanding room 11 and the second expanding room 12. The catalyst mantle 3, which is between the admission terminal 31 and the exhaust terminal 32, has at least one substrate 4 having catalyst coated thereon. In this exemplary embodiment, the catalyst mantle 3 has a plurality of substrates 4, 41 with catalyst coated thereon (as shown in
The present further includes the following features.
The catalyst is selected from a group of noble metal consisting of palladium (Pd), platinum (Pt), rhodium (Rh), etc.
The block is a baring pole 52 integrated on the exhaust terminal 32 of the catalyst mantle 3. The baring pole 52 may be intersecting-shaped, arc-shaped, or fin-shaped (as shown in
The stopper 6 is a curved stopping strip 61 with two ends welded on the clapboard 2 and an indention for receiving the substrate 40.
The present invention can be performed by the above members. Especially when the engine starts to operate, the waste gas produced by the engine is guided into the first expanding room 11 of the muffler 1 through the exhaust pipe 13 of the exhausting route 10 (as shown in
Furthermore, the baring pole 52 of the block 5 may be scraggy or corrugated (as shown in
Furthermore, the catalyst mantle 3 is formed by stamping on the clapboard 2. The catalyst mantle 3 may be also formed by integrating with the clapboard 2. The catalyst mantle 3 may have a flat foil 4 rolled to be a turbinate substrate therein.
Referring to
The lower expanding room 11a is communicated with the engine through an intake 17a which is arranged on the lower cover 15a, as shown in
When the engine starts to operate, the waste gas produced by the engine is guided into the lower expanding room 11a of the muffler 1a through the exhausting route 10a and the intake 17a (as shown in
Furthermore, as shown in
The above description is given by way of example, and not limitation. Given the above disclosure, one skilled in the art could devise variations that are within the scope and spirit of the invention disclosed herein, including configurations ways of the recessed portions and materials and/or designs of the attaching structures. Further, the various features of the embodiments disclosed herein can be used alone, or in varying combinations with each other and are not intended to be limited to the specific combination described herein. Thus, the scope of the claims is not to be limited by the illustrated embodiments.
Claims
1. A fixing device of catalyst substrate, comprising:
- a muffler communicated with an exhausting route of an internal combustion engine, the muffler having at least one clapboard to divide an inner space thereof for forming a plurality of expanding rooms which are communicated with each other and configured for guiding waste gas;
- a catalyst mantle integrated on the clapboard, the catalyst mantle having an admission terminal and an exhaust terminal communicated with the plurality of expanding rooms, a substrate having catalyst coated thereon being arranged in the catalyst mantle between the admission terminal and the exhaust terminal, the catalyst mantle further including at least one block configured for preventing the substrate sliding to the exhaust terminal; and
- a stopper formed on the clapboard or an inner wall of the muffler for preventing the substrate sliding to the admission terminal.
2. The fixing device of catalyst substrate as claimed in claim 1, wherein the block is a baring pole integrated on the exhaust terminal of the catalyst mantle, the baring pole has a shape selected from a group consisting of intersecting-shape, arc-shape, and fin-shape.
3. The fixing device of catalyst substrate as claimed in claim 1, wherein the block is scraggy or corrugated, and has at least one groove attached on the substrate for preventing the substrate sliding, and at least one protrusion spacing from the groove to form a vent hole.
4. The fixing device of catalyst substrate as claimed in claim 1, wherein the stopper is a curved stopping strip with two ends welded on the clapboard and an indention for receiving the substrate.
5. The fixing device of catalyst substrate as claimed in claim 1, wherein the stopper is a curved stopping strip with two ends welded on the inner wall and a crowning for the substrate resting thereon, or the stopper is formed as a crowning portion of the inner wall for the substrate resting thereon.
6. A fixing device of catalyst substrate, comprising:
- a muffler communicated with an exhausting route of an internal combustion engine, the muffler having at least one clapboard to divide inner space thereof for forming a plurality of expanding rooms, which are communicated with each other and configured for guiding waste gas, the clapboard having at least one block formed thereon;
- a catalyst mantle integrated on the clapboard, the catalyst mantle having an admission terminal and an exhaust terminal communicated with the plurality of expanding rooms, a substrate having catalyst coated thereon being arranged in the catalyst mantle between the admission terminal and the exhaust terminal, the block being configured for preventing the substrate sliding to the exhaust terminal; and
- a stopper formed on the clapboard or on an inner wall of the muffler for preventing the substrate sliding to the admission terminal.
7. The fixing device of catalyst substrate as claimed in claim 6, wherein the block is a baring pole integrated on the exhaust terminal of the catalyst mantle, the baring pole has a shape selected from a group consisting of intersecting-shape, arc-shape, and fin-shape.
8. The fixing device of catalyst substrate as claimed in claim 6, wherein the block is scraggy or corrugated, and has at least one groove attached on the substrate for preventing the substrate sliding, and at least one protrusion spacing from the groove to form a vent hole.
9. The fixing device of catalyst substrate as claimed in claim 6, wherein the stopper is a curved stopping strip with two ends welded on the clapboard and an indention for receiving the substrate.
10. The fixing device of catalyst substrate as claimed in claim 6, wherein the stopper is a curved stopping strip with two ends welded on the inner wall and a crowning for the substrate resting thereon, or the stopper is formed as a crowning portion of the inner wall for the substrate resting thereon.
Type: Application
Filed: Nov 26, 2007
Publication Date: Mar 12, 2009
Inventors: Wen Shing Chang (Lungtan), Yu-Hsuan Cho (Lungtan)
Application Number: 11/944,652