Electric heating exhaust gas purifier
By designing an electric heating exhaust gas purifier in the diesel vehicle exhaust purifier and using radioactively distributed heating fins to heat the exhaust gas, the problem of insufficient exhaust gas temperature during the preheating and starting of the diesel vehicle is solved, which significantly improves the exhaust gas purification efficiency, extends the service life of the equipment and reduces costs.
Patent Information
- Application Number
- CN202411991502.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2025-04-08
AI Technical Summary
The exhaust temperature of the diesel vehicle is insufficient during the preheating stage and the initial start-up period, resulting in low catalytic efficiency and inability to effectively filter the exhaust gas, resulting in excessive exhaust gas, and sulfide affects the oxidation catalytic converter and particle trap, shortening the service life and increasing costs.
An electric heating exhaust gas purifier is designed, including a shell, a heating body and a exhaust gas purifier. The heating body is composed of multiple heating fins, which are radioactively distributed, connected around the central axis, and are energized and heated through the power port. The horn section is designed to reduce the exhaust gas speed to improve the heating efficiency.
Significantly improve the exhaust gas purification efficiency of diesel vehicles in the preheating stage and early stages, reduce the pollutant content in the exhaust gas, extend the service life of the exhaust gas purifier, reduce the cost of use, and improve economic benefits.
Smart Images
Figure CN119778074A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of automobile tail gas emission, and in particular relates to an electric heating tail gas purifier. Background Art
[0002] At present, roads have clear requirements for exhaust emissions, but the exhaust temperature of diesel vehicles during the preheating stage and the initial start-up stage cannot reach the temperature required for catalysis, resulting in low catalytic efficiency and ineffective filtration of diesel vehicle exhaust, which ultimately leads to excessive exhaust during the start-up stage of diesel vehicles. Therefore, it is very necessary to increase the exhaust temperature during the start-up stage. At the same time, the sulfide in the exhaust will affect the DOC (oxidation catalytic converter), causing the DPF (particulate filter) to be blocked, shortening the service life and increasing the cost of use. Therefore, it is urgent for those skilled in the art to propose an exhaust purifier device that increases the exhaust temperature of diesel vehicles during preheating and the initial start-up stage. Summary of the invention
[0003] In view of this, the present invention provides an electrically heated exhaust gas purifier to solve the above-mentioned problem.
[0004] In order to achieve the above object, the present invention adopts the following technical solution:
[0005] An electrically heated exhaust gas purifier comprises: a shell, a heating body and an exhaust gas purifier. The shell is provided with an exhaust gas inlet at the front end and an outlet at the rear end. The heating body and the exhaust gas purifier are arranged in the shell, and the heating body is close to the exhaust gas inlet, and the exhaust gas purifier is close to the outlet. A power-on port is provided on the side wall of the shell, and the heating body is electrically heated through the power-on port. The heating body comprises a plurality of heating fins, and the plurality of heating fins are radially distributed.
[0006] Furthermore, it also includes a central shaft, and a plurality of heating fins are circumferentially connected to the outer wall of the central shaft around the axis of the central shaft.
[0007] Furthermore, the heating body also includes a heating outer ring, which is connected to the outer rings of the plurality of heating fins, and the heating outer ring is arranged in the shell.
[0008] Furthermore, there is a trumpet section between the exhaust gas inlet on the shell and the heating body, which is used to reduce the exhaust gas speed and fully heat it in the heating body.
[0009] Furthermore, an angle is set between the heating fin and the axis of the central shaft.
[0010] The beneficial effects of the present invention are:
[0011] The present invention installs a heating body in front of the exhaust gas purifier to preheat the exhaust gas. Compared with installing a heating wire in the exhaust gas purifier, it can effectively reduce the time required for heating, improve the heating efficiency, make it reach the state of efficient operation faster, and have lower requirements on the material of the exhaust gas purifier filter element, and has wider applicability and is more convenient for large-scale promotion and use; the present invention can significantly improve the exhaust gas purification efficiency of diesel vehicles in the preheating stage and the initial start-up stage, reduce the content of pollutants contained in the exhaust gas, increase the service life of the exhaust gas purifier, reduce the use cost of the exhaust gas purifier, and improve the economic benefit
[0012] The exhaust gas passes through multiple heating fins, which can improve the heating efficiency of the exhaust gas; and setting an angle between the heating fins and the axis of the central axis and arranging them circumferentially around the axis of the central axis can further increase the path of the exhaust gas in the heating body and further improve the heating efficiency of the exhaust gas. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.
[0014] Figure 1 This is a schematic diagram of the structure of an electrically heated exhaust gas purifier.
[0015] Figure 2 This is a front view of the heating body of Example 1.
[0016] Figure 3 This is a three-dimensional diagram of the heating body of Example 2.
[0017] Figure 4 This is a front view of the heating body of Example 2.
[0018] Figure 5 This is a three-dimensional diagram of the heating body of Example 3.
[0019] Figure 6 This is a front view of the heating body of Example 3.
[0020] Among them, in the figure:
[0021] 1-shell, 2-heating body, 21-heating fins, 22-central axis, 23-heating outer ring, 3-exhaust purifier, 4-exhaust air inlet, 5-air outlet, 6-power supply port, 7-speaker section. DETAILED DESCRIPTION
[0022] 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 described embodiments 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 creative work are within the scope of protection of the present invention.
[0023] Example 1
[0024] Refer to the attached Figure 1 and 2 As shown, the present invention provides an electrically heated exhaust gas purifier, comprising: a housing 1, a heating body 2 and an exhaust gas purifier 3, wherein the housing 1 is provided with an exhaust gas inlet 4 at the front end and an exhaust gas outlet 5 at the rear end, the heating body 2 and the exhaust gas purifier 3 are arranged in the housing 1, and the heating body 2 is close to the exhaust gas inlet 4, and the exhaust gas purifier 3 is close to the exhaust gas outlet 5, wherein the heating body 2 is made of nickel-chromium alloy, and the exhaust gas purifier 3 is an oxidation type catalytic converter; a power-on port 6 is provided on the side wall of the housing 1, and the heating body 2 is electrically heated through the power-on port 6, and the heating body 2 includes a plurality of heating fins 21, and the plurality of heating fins 21 are radially distributed. There is a trumpet section 7 between the exhaust gas inlet 4 and the heating body 2 on the housing 1, and the exhaust gas enters the wide trumpet section 7 from the narrow exhaust gas inlet 4, which can reduce the speed of the exhaust gas, and the reduced speed exhaust gas can improve the heating efficiency when passing through the heating body 2.
[0025] Example 2
[0026] Refer to the attached Figure 1 , 3 As shown in Figure 4, on the basis of Example 1, the heating body 2 further includes a central axis 22 and a heating outer ring 23, a plurality of heating fins 21 are circumferentially connected to the outer wall of the central axis 22 around the axis of the central axis 22; the heating outer ring 23 is connected to the outer rings of the plurality of heating fins 21, and the heating outer ring 23 is arranged in the housing 1. The space enclosed by the plurality of heating fins 21 and the heating outer ring 23 is electrically heated, and the exhaust gas passes through the space enclosed by the plurality of heating fins 21 and the heating outer ring 23, which can improve the heating efficiency of the exhaust gas.
[0027] Example 3
[0028] Refer to the attached Figure 1 , 5 As shown in Figure 6, on the basis of Example 2, the heating fins 21 are arranged at an angle with the axis of the central axis 22, and a plurality of heating fins 21 are circumferentially connected between the central axis 22 and the heating outer ring 23 around the axis of the central axis 22. The heating fins 21 are arranged at an angle with the axis of the central axis 22 and circumferentially around the axis of the central axis 22, which can further increase the path of the exhaust gas in the heating body 2 and further improve the heating efficiency of the exhaust gas.
[0029] Working principle: the heating body 2 is arranged before the exhaust purifier 3, and the power port 6 is powered to the diesel vehicle battery, and the heating body 2 is heated through the power port 6, so that the temperature reaches the required temperature within 30-60s; the exhaust gas enters the wide horn section 7 from the narrow exhaust gas inlet 4, which can reduce the speed of the exhaust gas, and improve the heating efficiency when the reduced-speed exhaust gas passes through the heating body 2; the temperature of the exhaust gas after being heated by the heating body 2 reaches 450 degrees Celsius. During this period, the sulfide in the exhaust gas will be significantly reduced compared with the sulfide in the original exhaust gas after the high-temperature heating of the heating body 2, thereby reducing the impact on the exhaust purifier 3. At the same time, the temperature of the exhaust gas reaches the suitable catalytic temperature after heating, and the required catalytic effect can be achieved more quickly. After this heating process, the exhaust gas discharged through the outlet 5 in the preheating stage and the initial start-up stage is significantly lower than the exhaust gas pollutant content that has not undergone this process, and the exhaust purifier 3 is significantly affected by sulfides, thereby achieving energy conservation and emission reduction and improving economic benefits.
[0030] The heating body 2 is connected to the diesel vehicle battery through the power port 6, and a switch is designed. When the vehicle starts, the switch is turned on to supply power to the heating body 2 for heating. A temperature control system is added. When the temperature reaches 450°, the timing starts. After three minutes, the circuit is closed and the heating stops.
[0031] The above is only a specific embodiment of the present invention, and the common knowledge such as the known specific structure and characteristics in the scheme is not described in detail here. It should be pointed out that for those skilled in the art, several deformations and improvements can be made without departing from the structure of the present invention, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.
[0032] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.
[0033] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. Electric heating exhaust gas purifier, characterized in that: include: A shell (1), a heating body (2) and an exhaust gas purifier (3), wherein the front end of the shell (1) is provided with an exhaust gas inlet (4), and the rear end is provided with an exhaust gas outlet (5), the heating body (2) and the exhaust gas purifier (3) are arranged in the shell (1), and the heating body (2) is close to the exhaust gas inlet (4), and the exhaust gas purifier (3) is close to the exhaust gas outlet (5), and a power supply port (6) is provided on the side wall of the shell (1), and the heating body (2) is heated by power supply through the power supply port (6), and the heating body (2) includes a plurality of heating fins (21), and the plurality of heating fins (21) are radially distributed.
2. The electrically heated exhaust gas purifier according to claim 1, characterized in that: It also includes a central shaft (22), and a plurality of heating fins (21) are circumferentially connected to the outer wall of the central shaft (22) around the axis of the central shaft (22).
3. The electrically heated exhaust gas purifier according to claim 2, characterized in that: The heating body (2) further comprises a heating outer ring (23), wherein the heating outer ring (23) is connected to the outer rings of the plurality of heating fins (21), and the heating outer ring (23) is arranged inside the shell (1).
4. The electrically heated exhaust gas purifier according to claim 1, characterized in that: A trumpet section (7) is provided between the exhaust gas inlet (4) on the shell (1) and the heating body (2), which is used to reduce the exhaust gas velocity and fully heat the exhaust gas in the heating body (2).
5. The electrically heated exhaust gas purifier according to claim 3, characterized in that: The heating fins (21) and the axis of the central axis (22) are arranged at an angle.