Particle trap based on shark skin structure

Abstract

The utility model discloses a particle trap based on a shark skin structure, which relates to particle traps and comprises a carrier. A plurality of air inlet ducts and air outlet ducts are formed in the carrier, porous medium wall surfaces are arranged between the adjacent air inlet ducts and air outlet ducts, and a plurality of shark skin odontoid imitating placoid scale structures are arranged on the hole walls of the air inlet ducts. By simulating a streamline structure of shark skin, a shark skin odontoid imitating placoid scale structure is designed in the air inlet duct, and the placoid scale structure can destroy a boundary layer and delay flow separation, so that differential pressure resistance is reduced, the effect of optimizing a flow path of airflow is achieved, and exhaust back pressure is effectively reduced.

Description

Technical Field

[0001] The utility model relates to a particle collector, and more particularly to a particle collector based on a shark skin structure. Background Art

[0002] In the field of diesel engine emission control technology, diesel particulate filters (DPFs), as a key technology for reducing diesel engine particulate matter emissions, have garnered widespread attention in recent years. While existing DPFs are effective at capturing particulate matter, increased backpressure under high engine load conditions can lead to reduced fuel economy and decreased power performance. In particular, while traditional DPF designs employ wall-flow honeycomb ceramic structures that effectively capture particulate matter, they still present significant backpressure issues. This issue urgently needs to be addressed. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a particle collector based on a shark skin structure in view of the deficiencies in the prior art, thereby effectively reducing the exhaust back pressure.

[0004] The particle collector based on the shark skin structure described in the utility model includes a carrier; a plurality of air intake channels and exhaust channels are opened in the carrier, a porous medium wall is provided between adjacent air intake channels and exhaust channels, and a plurality of shield scale structures imitating shark skin tooth protrusions are provided on the hole wall of the air intake channel.

[0005] As a further improvement, a plurality of the shield scale structures are arranged into a shield scale group extending from one end of the air inlet channel to the other end thereof, and a plurality of shield scale groups are evenly arranged on the hole wall of the air inlet channel.

[0006] Furthermore, an intermediate flow channel is provided between two adjacent shield scale groups.

[0007] Furthermore, the width of the middle flow channel is 0.15-0.7 mm.

[0008] As a further improvement, the carrier is made of ceramic material, and the surface of the carrier and the surface of the shield-scale structure are coated with a hydrophobic coating.

[0009] As a further improvement, the shield scale structure includes a middle scale and side scales; multiple side scales are provided on both sides of the middle scale, and fluid channels are provided between the middle scale and the adjacent side scales and between two adjacent side scales, and the direction of the fluid channel is consistent with the direction of the air inlet channel.

[0010] Furthermore, the width of the fluid channel is 0.07-0.14 mm.

[0011] Furthermore, the length of the middle scale is greater than that of the side scales, and the length of the side scales decreases starting from the middle scale.

[0012] Furthermore, the raised height of the middle scale is greater than the raised height of the side scales, and the raised height of the middle scale is 0.1 to 0.35 mm.

[0013] Furthermore, the thickness of the middle scales and the side scales is consistent, and the thickness is 0.1 to 0.35 mm.

[0014] Beneficial effects

[0015] The advantages of the present invention are:

[0016] 1. The utility model imitates the streamlined structure of shark skin and designs a shield scale structure that imitates the denticles of shark skin in the air intake duct. The shield scale structure can destroy the boundary layer, delay flow separation, and thus reduce the pressure difference resistance, thereby optimizing the flow path of the airflow and effectively reducing the exhaust back pressure.

[0017] 2. The surface of the carrier and the surface of the shield scale structure are coated with a hydrophobic coating, which can reduce the adhesion of particulate matter and reduce the maintenance requirements of DPF. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the internal structure of the side of the intake and exhaust duct of the present invention;

[0019] Figure 2 This is a schematic diagram of the shield scale structure of the utility model;

[0020] Figure 3 This is a schematic diagram of the cross-sectional structure of the air intake duct of the present invention.

[0021] Among them: 1-carrier, 2-air inlet channel, 3-exhaust channel, 4-porous medium wall, 5-shield scale structure, 6-middle flow channel, 51-middle scale, 52-side scale, 53-fluid channel. DETAILED DESCRIPTION

[0022] The present invention will be further described below in conjunction with the embodiments, but this does not constitute any limitation to the present invention. Any limited modifications made by anyone within the scope of the claims of the present invention are still within the scope of the claims of the present invention.

[0023] See Figure 1-Figure 3The present invention discloses a particle collector based on a shark skin structure, comprising a carrier 1. The carrier 1 is provided with a plurality of air intake channels 2 and exhaust channels 3. A porous medium wall 4 is provided between adjacent air intake channels 2 and exhaust channels 3. The walls of the air intake channels 2 are provided with a plurality of shield scale structures 5 that mimic the denticles of shark skin.

[0024] Studies have shown that the denticles of shark skin can effectively reduce water resistance, and its design is based on the formation of different shapes according to the swimming speed and the needs of different parts of the body. When cruising at low speeds, the higher central ridge can effectively reduce resistance, while when hunting at high speeds, the lower side ridges play a key role in reducing drag. The design concept of this streamlined structure can be applied to the optimization of DPF to reduce its back pressure during operation. Therefore, the utility model imitates the streamlined structure of shark skin and designs a shield scale structure 5 that imitates the denticles of shark skin in the air intake duct 2. It can design a more complex fluid channel inside the DPF to optimize the flow path of the airflow, thereby reducing the increase in back pressure. This design can not only improve the capture efficiency of particulate matter, but also maintain a low exhaust back pressure under high load conditions, thereby improving the fuel economy and power performance of the diesel engine. In summary, the DPF design based on the streamlined structure of shark skin can not only effectively reduce back pressure, but also improve the particle capture efficiency, providing a new direction for the innovation of diesel engine emission control technology. The application of this design concept heralds further development and optimization of DPF technology in the future, helping to meet increasingly stringent emission standards.

[0025] Regarding the specific design requirements for the shield scale structure 5, the present invention arranges multiple shield scale structures 5 into a shield scale group extending from one end of the air intake duct 2 to the other. Multiple shield scale groups are evenly distributed along the walls of the air intake duct 2. For example, in a square air intake duct 2, two shield scale groups are provided on each sidewall of the air intake duct 2. This creates a streamlined channel structure within the entire air intake duct 2, mimicking the denticles of shark skin. This optimizes gas flow and reduces turbulence and eddies.

[0026] An intermediate flow channel 6 is provided between two adjacent shield scale groups, and its width is preferably 0.5 mm. The width of the intermediate flow channel 6 is greater than the spacing between the scales. The intermediate flow channel 6 serves as the main area for gas to pass through the porous medium wall 4, ensuring the reliability of gas entering the exhaust channel 3 from the inlet channel 2.

[0027] In this embodiment, the carrier 1 is made of ceramic material, and the surface of the carrier 1 and the surface of the shield-scale structure 5 are coated with a hydrophobic coating. The hydrophobic coating can reduce the adhesion of particulate matter and reduce the maintenance requirements of the DPF.

[0028] The shield scale structure 5 comprises a central scale 51 and side scales 52. Multiple side scales 52 are located on either side of the central scale 51. Fluid channels 53 are located between the central scale 51, adjacent side scales 52, and between adjacent side scales 52. The orientation of the fluid channels 53 aligns with the orientation of the air intake duct 2, optimizing the airflow path. The length of the central scale 51 is greater than that of the side scales 52, with the length of the side scales 52 decreasing from the central scale 51. Specifically, the width of the fluid channels 53 is preferably 0.1 mm. The height of the raised portion of the central scale 51 is slightly greater than that of the side scales 52, preferably 0.2 mm. The central scale 51 and side scales 52 are of equal thickness, preferably 0.2 mm. This design creates a microscopic tooth-like structure on the sidewalls of the air intake duct 2, mimicking the protrusions of a shark's teeth.

[0029] The above is only a preferred embodiment of the present invention. It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the structure of the present invention. These modifications and improvements will not affect the effect of the implementation of the present invention and the practicality of the patent.

Claims

1. A particle collector based on shark skin structure, characterized in that: The invention comprises a carrier (1); a plurality of air inlet channels (2) and air outlet channels (3) are provided in the carrier (1); a porous medium wall surface (4) is provided between adjacent air inlet channels (2) and air outlet channels (3); and a plurality of shield scale structures (5) imitating shark skin tooth protrusions are provided on the hole wall of the air inlet channel (2); The plurality of shield scale structures (5) are arranged into a shield scale group extending from one end of the air inlet duct (2) to the other end thereof, and the plurality of shield scale groups are evenly arranged on the hole wall of the air inlet duct (2); An intermediate flow channel (6) is provided between two adjacent shield scale groups; The shield scale structure (5) comprises a middle scale (51) and side scales (52); a plurality of side scales (52) are provided on both sides of the middle scale (51); and a fluid channel (53) is provided between the middle scale (51) and the adjacent side scale (52) and between two adjacent side scales (52); the direction of the fluid channel (53) is consistent with the direction of the air intake channel (2); The length of the middle scale (51) is greater than the length of the side scales (52), and the length of the side scales (52) decreases sequentially from the beginning close to the middle scale (51).

2. The particle collector based on shark skin structure according to claim 1, characterized in that: The width of the intermediate flow channel (6) is 0.15-0.7 mm.

3. The particle collector based on shark skin structure according to claim 1, characterized in that: The carrier (1) is made of ceramic material, and the surface of the carrier (1) and the surface of the shield-scale structure (5) are coated with a hydrophobic coating.

4. The particle collector based on shark skin structure according to claim 1, characterized in that: The width of the fluid channel (53) is 0.07-0.14 mm.

5. The particle collector based on shark skin structure according to claim 1, characterized in that: The raised height of the middle scale (51) is greater than the raised height of the side scale (52), and the raised height of the middle scale (51) is 0.1 to 0.35 mm.

6. The particle collector based on shark skin structure according to claim 1, characterized in that: The thickness of the middle scale (51) and the side scale (52) is consistent, and the thickness is 0.1 to 0.35 mm.

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