Air inlet structure of three-way catalyst
By setting up an installation cylinder and filter structure inside the intake end cone, the problem of cone blockage at the intake end is solved, and the exhaust gas catalytic efficiency and convenient cleaning capacity of the three-way catalyst are improved.
Patent Information
- Application Number
- CN202422442522.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-10
- Publication Date
- 2025-08-12
- Estimated Expiration
- 2034-10-10
AI Technical Summary
After a long time of use, the intake cone of the three-way catalyst is prone to be blocked by impurities in the waste gas, resulting in a degradation of the catalyst performance and affecting the catalytic efficiency of the waste gas.
The installation cylinder and filter structure are arranged inside the intake end cone. The filter is used to intercept impurities in the exhaust gas. The installation cylinder cooperates with the ring and cylinder to facilitate disassembly and clean up and ensure smooth exhaust gas.
The catalytic efficiency of the three-way catalyst to the exhaust gas is improved, prevents blockage, facilitates filter cleaning, and maintains the stability of the catalyst performance.
Smart Images
Figure CN223215324U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of air intake structures of three-way catalytic converters, in particular to an air intake structure of a three-way catalytic converter. Background Art
[0002] The three-way catalytic converter is the most important external purification device installed in the automobile exhaust system. It plays a vital role in reducing harmful substances in automobile exhaust. The three-way catalytic converter is a device that can convert harmful gases such as CO (carbon monoxide), HC (hydrocarbons) and NOx (nitrogen oxides) in automobile exhaust into harmless carbon dioxide, water and nitrogen through oxidation and reduction. This conversion process relies on the purifier in the catalyst, usually precious metals such as platinum, rhodium and palladium. When high-temperature automobile exhaust passes through the three-way catalytic converter, the purifier in the catalyst will enhance the activity of these three harmful gases, prompting them to undergo redox chemical reactions. The three-way catalytic converter is an indispensable component in the automobile exhaust system. It is of great significance to reducing harmful substances in automobile exhaust and protecting the environment and human health. If the three-way catalytic converter is damaged or fails, the harmful substances in the automobile exhaust will not be effectively converted, thereby polluting the environment.
[0003] After long-term use, the intake end cone of the three-way catalytic converter will be affected by impurities in the exhaust gas, causing the intake end cone to become blocked, thereby causing the performance of the three-way catalytic converter to decline due to the blockage of the intake end cone, affecting the use of the three-way catalytic converter and reducing the catalytic efficiency of the three-way catalytic converter on the exhaust gas. Utility Model Content
[0004] The purpose of the utility model is to provide an air intake structure of a three-way catalytic converter, wherein a mounting cylinder is provided inside the air intake end cone, the mounting cylinder and the circular ring form a whole, and a filter is installed at the other end of the mounting cylinder, through which impurities in the inflowing exhaust gas can be intercepted and filtered, thereby improving the catalytic efficiency of the three-way catalytic converter on the exhaust gas.
[0005] The utility model is realized through the following technical solutions:
[0006] The utility model is an air intake structure of a three-way catalytic converter, comprising a three-way catalytic converter body, an air intake end cone connected to the three-way catalytic converter body, a mounting cylinder arranged inside the air intake end cone, a circular ring mounted on one end of the mounting cylinder, a filter mounted on the other end of the mounting cylinder, the filter arranged inside the air intake end cone, a cylinder mounted on one side of the circular ring, the circular ring and the cylinder both fitted on the air intake end cone, a placement groove being provided on one side of the circular ring, and a pull plate being mounted inside the placement groove via a hinge.
[0007] Furthermore, the other end of the three-way catalytic converter body is connected to the exhaust manifold.
[0008] Furthermore, an end cone inlet is provided at one end of the intake end cone, the end cone inlet is connected to the end cone gradually expanding outlet, and the end cone gradually expanding outlet is connected to the three-way catalytic converter body.
[0009] Furthermore, a sealing flange is installed at the other end of the intake end cone.
[0010] Furthermore, a groove is provided on the side wall of the air inlet end cone, and a circular hole is provided inside the groove.
[0011] Furthermore, the inside of the slot is matched with a circular ring, and the circular hole is matched with the cylinder.
[0012] The utility model has the following beneficial effects:
[0013] The utility model has a mounting cylinder sleeved on the inside of the intake end cone, and the mounting cylinder and the circular ring form a whole. The filter at one end of the mounting cylinder can intercept and filter impurities in the inflowing exhaust gas, thereby improving the catalytic efficiency of the three-way catalytic converter on the exhaust gas. When the filter of the mounting cylinder inside the intake end cone is clogged, the sealing flange installed with the external exhaust gas delivery pipe is disassembled, and the intake end cone, the three-way catalytic converter body and the exhaust manifold can be separated from the external exhaust gas delivery pipe. The circular ring and the cylinder are separated from the card slot and the inside of the circular hole, which makes it convenient for the user to remove the mounting cylinder from the inside of the intake end cone with the circular ring, thereby facilitating the cleaning of the filter.
[0014] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a schematic diagram of the structure of the three-way catalytic converter body, intake end cone and exhaust manifold;
[0016] Figure 2 Schematic diagram of the structure of the intake end cone;
[0017] Figure 3 It is a structural diagram of the state where the intake end cone and the mounting cylinder are separated;
[0018] Figure 4 Schematic diagram of the structure of the installation tube.
[0019] In the figure: 1. Intake end cone; 101. End cone inlet; 103. End cone gradually expanding outlet; 104. Sealing flange; 105. Slot; 106. Circular hole; 2. Three-way catalytic converter body; 3. Exhaust manifold; 4. Mounting cylinder; 401. Filter; 5. Ring; 501. Cylinder; 502. Placement groove; 503. Pull plate. DETAILED DESCRIPTION
[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0021] See also Figure 1-4 The utility model provides a technical solution: an intake structure of a three-way catalytic converter, including a three-way catalytic converter body 2, an intake end cone 1 connected to the three-way catalytic converter body 2, and the other end of the three-way catalytic converter body 2 connected to the exhaust manifold 3. The exhaust gas enters the three-way catalytic converter body 2 through the intake end cone 1 for catalytic operation. The gas after the catalysis is completed is discharged through the exhaust manifold 3, completing the overall catalysis of the exhaust gas.
[0022] An installation cylinder 4 is provided inside the intake end cone 1, and a circular ring 5 is installed at one end of the installation cylinder 4. The installation cylinder 4 and the circular ring 5 form a whole. A filter screen 401 is installed at the other end of the installation cylinder 4. The filter screen 401 can intercept and filter impurities in the inflowing exhaust gas, thereby improving the catalytic efficiency of the three-way catalytic converter on the exhaust gas. The filter screen 401 is provided inside the intake end cone 1, and a cylinder 501 is installed on one side of the circular ring 5. The circular ring 5 and the cylinder 501 are both fitted on the intake end cone 1. A placement groove 502 is provided on one side of the circular ring 5, and a pull plate 503 is installed inside the placement groove 502 through a hinge.
[0023] An end cone inlet 101 is provided at one end of the intake end cone 1, and an end cone gradually expanding outlet 103 is connected to the end cone inlet 101, and the end cone gradually expanding outlet 103 is connected to the three-way catalytic converter body 2. A sealing flange 104 is installed at the other end of the intake end cone 1, and the external exhaust gas delivery pipe is connected through the sealing flange 104, so that the exhaust gas can enter the three-way catalytic converter body 2 through the intake end cone 1. A card groove 105 is provided on the side wall of the intake end cone 1, and a circular hole 106 is provided inside the card groove 105. The inside of the card groove 105 cooperates with the circular ring 5, and the circular hole 106 cooperates with the cylinder 501, so as to facilitate the installation and disassembly of the circular ring 5 and the mounting tube 4 inside the intake end cone 1.
[0024] When the intake structure is installed on the three-way catalytic converter for use, the intake end cone 1 can be connected to the external exhaust gas delivery pipe through the sealing flange 104, and the mounting tube 4 is sleeved in the end cone inlet 101 inside the intake end cone 1, and the filter 401 at one end of the mounting tube 4 is set inside the end cone gradually expanding outlet 103, and the circular ring 5 at one end of the mounting tube 4 is clamped on the clamping groove 105 of the intake end cone 1, and the cylinder 501 on the circular ring 5 fits inside the circular hole 106, so that the mounting tube 4 can be installed inside the intake end cone 1 through the circular ring 5, and the mounting tube 4 is located between the external exhaust gas delivery pipe and the intake end cone 1, so that when the intake end cone 1 enters the exhaust gas, the exhaust gas can pass through the filter 401 of the mounting tube 4 to block the exhaust gas impurities. Intercept and filter to prevent exhaust impurities from entering the three-way catalytic converter body 2 through the intake end cone 1, thereby ensuring the catalytic use of the three-way catalytic converter body 2. When the filter screen 401 of the cylinder 4 installed inside the intake end cone 1 is blocked, remove the sealing flange 104 installed with the external exhaust gas delivery pipe, and separate the intake end cone 1, the three-way catalytic converter body 2 and the exhaust manifold 3 from the external exhaust gas delivery pipe. Flip the pull plate 503 installed on the placement groove 502 of the ring 5, so that the ring 5 can be pulled through the pull plate 503 to separate the ring 5 and the cylinder 501 from the inside of the card groove 105 and the circular hole 106, so that the user can drive the ring 5 to remove the installation cylinder 4 from the inside of the intake end cone 1, thereby facilitating the cleaning of the filter screen 401.
[0025] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments do not describe all details in detail, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.
Claims
1. An air intake structure of a three-way catalytic converter, comprising a three-way catalytic converter body (2), wherein the three-way catalytic converter body (2) is connected to an air intake end cone (1), and is characterized in that: A mounting cylinder (4) is provided inside the air intake end cone (1), a circular ring (5) is installed at one end of the mounting cylinder (4), a filter screen (401) is installed at the other end of the mounting cylinder (4), the filter screen (401) is provided inside the air intake end cone (1), a cylinder (501) is installed on one side of the circular ring (5), the circular ring (5) and the cylinder (501) are both fitted on the air intake end cone (1), a placement groove (502) is provided on one side of the circular ring (5), and a pull plate (503) is installed inside the placement groove (502) via a hinge.
2. The intake structure of a three-way catalytic converter according to claim 1, characterized in that: The other end of the three-way catalytic converter body (2) is connected to the exhaust manifold (3).
3. The intake structure of a three-way catalytic converter according to claim 1, characterized in that: An end cone inlet (101) is provided at one end of the intake end cone (1), the end cone inlet (101) is connected to an end cone gradually expanding outlet (103), and the end cone gradually expanding outlet (103) is connected to the three-way catalytic converter body (2).
4. The intake structure of a three-way catalytic converter according to claim 3, characterized in that: A sealing flange (104) is installed at the other end of the intake end cone (1).
5. The intake structure of a three-way catalytic converter according to claim 4, characterized in that: A slot (105) is provided on the side wall of the air inlet end cone (1), and a circular hole (106) is provided inside the slot (105).
6. The intake structure of a three-way catalytic converter according to claim 5, characterized in that: The inside of the slot (105) cooperates with the circular ring (5), and the circular hole (106) cooperates with the cylinder (501).