Metal honeycomb carrier with turbulent flow type perforated structure

Abstract

The utility model provides a metal honeycomb carrier with a turbulent flow type perforated structure, which comprises a metal outer frame and an inner core positioned in the metal outer frame, the inner core is formed by laminating a flat belt and a wave belt, a plurality of through holes are uniformly arranged on the flat belt, and the wave belt is a broken hole type corrugated metal wave belt. According to the metal honeycomb carrier, the wave band and the flat band are combined into a whole, so that bidirectional pore channels can be formed, the catalytic conversion efficiency is higher, under the same catalytic effect, the size of the inner core is smaller, the space required for packaging is smaller, the used materials are fewer, and the manufacturing cost of the metal honeycomb carrier is reduced; the flat zone and the wave zone can realize interconnection between pore channels, so that the air flow staying time is prolonged, and the catalytic effect is more uniform; the applied flat band and wave band are thinner, and the back pressure is smaller.

Description

Technical Field

[0001] The utility model relates to a metal carrier, in particular to a metal honeycomb carrier with a turbulent perforated structure. Background Art

[0002] With the rapid development of science and technology, people's living standards have improved rapidly, and the popularity of automobiles has also increased rapidly. The resulting air pollution problem has become increasingly serious. Against the background of electric vehicles gradually occupying the market, how to save energy and reduce emissions is a key factor for the survival of hybrid vehicles and fuel vehicles.

[0003] Currently, the interior of metal honeycomb carriers on the market mainly adopts ordinary corrugated structure, mixed flow structure (XF structure) and turbulent flow structure (TF structure).

[0004] The problems with the original structure are as follows:

[0005] (1) The airflow passes through the inner core channel of the carrier in a vertical direction and quickly, which shortens the catalytic reaction time and leads to low catalytic conversion efficiency.

[0006] (2) The foil used in the original structure is heavy. Under the same density conditions, the heat capacity is large and the required ignition time is long;

[0007] (3) The original structure has airflow passing through the carrier core in a vertical direction, the airflow residence time is short, and the catalytic effect is uneven;

[0008] (4) The original structure has a larger inner core surface area, so the resistance to airflow is greater and the back pressure is higher;

[0009] (5) Due to the short reaction time of airflow and catalyst, to achieve the same purification efficiency, the original structure requires a large amount of material and has a high manufacturing cost. Utility Model Content

[0010] The technical problem to be solved by the utility model is to overcome the defects of the prior art. The utility model proposes a metal honeycomb carrier with a turbulent perforated structure to solve the problems of low catalytic conversion efficiency, large carrier heat capacity, long ignition time, short carrier airflow residence time and uneven catalytic effect of the existing metal honeycomb, while taking into account the problems of high back pressure of the existing metal honeycomb carrier, large amount of carrier material consumption and high manufacturing cost.

[0011] In order to solve the above technical problems, the technical solution adopted by the utility model is: a metal honeycomb carrier with a turbulent perforated structure, characterized in that it includes a metal outer frame and an inner core located in the metal outer frame, the inner core is formed by stacking or rolling flat strips and wave strips, a number of through holes are evenly opened on the flat strips, and the wave strips are perforated corrugated metal wave strips.

[0012] Furthermore, the perforated corrugated metal belt is composed of crests and troughs connected in sequence, and a plurality of first cuts are provided on the surface of each trough at equal intervals along the length direction, and the troughs between the adjacent first cuts along the width direction are bulged upward to form an upper convex section, and the first cuts at both ends of the upper convex section respectively form first openings; a plurality of groups of second cuts are provided on the surface of each crest at equal intervals along the length direction, and the crests between the adjacent second cuts along the width direction are sunken downward to form a lower concave section, and the second cuts at both ends of the lower concave section respectively form second openings.

[0013] Furthermore, the adjacent concave sections and convex sections are staggered along the length direction of the perforated corrugated metal band.

[0014] Furthermore, the crest and trough are both wavy or bent structures, the convex section and concave section are both arc-shaped or bent, the height of the convex section is not greater than the height of the crest, and the height of the concave section is not greater than the height of the trough.

[0015] Furthermore, the lengths of the concave section and the convex section are equal.

[0016] Furthermore, the through holes are evenly arranged in a plurality of rows along the length or width direction of the flat belt, two adjacent rows of through holes are staggered, and the spacing between adjacent through holes is 3-5 mm.

[0017] Furthermore, the metal outer frame is a square structure or a circular structure, the left and right sides of the metal outer frame are exposed to the outside, and the two ends of the inner core are welded to the inner wall of the metal outer frame as a whole.

[0018] Compared with the prior art, the beneficial effects of the utility model include:

[0019] 1) By using a perforated corrugated metal belt as the belt, the first opening and the second opening respectively form mutually connected channels. When the gas passes through the metal inner core made of the roll of the present invention, the gas flow is dispersed in the axial and radial directions through the channel formed by the first opening and the second opening. The gas can fully contact the inner wall inside the metal inner core, which greatly increases the stability of the gas flow and gas pressure in the inner core. In addition, by arranging through holes on the flat belt, the material usage is reduced, the heat capacity is smaller, and the inner core ignites faster.

[0020] 2) By combining the wave band and the flat band into one, a bidirectional channel can be formed, which makes the catalytic conversion efficiency higher. Under the same catalytic effect, the inner core volume is smaller, the packaging space is less, and the material used is less, which reduces the manufacturing cost of the metal honeycomb carrier; the flat band and the wave band can realize the interconnection between the channels, increase the residence time of the airflow, and make the catalytic effect more uniform; the flat band and wave band used are thinner and the back pressure is smaller. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The disclosure of the present invention is described with reference to the accompanying drawings. It should be understood that the drawings are only for illustrative purposes and are not intended to limit the scope of protection of the present invention. In the accompanying drawings, the same reference numerals are used to refer to the same components. Among them:

[0022] Figure 1 The overall structure of the wave band is shown schematically;

[0023] Figure 2 The schematic diagram shows the structure of the flat strips stacked on both the upper and lower surfaces of the wave strips;

[0024] Figure 3 The surface structure of the flat belt is shown schematically;

[0025] Figure 4 The overall structure of the concentric circle structure product made of perforated corrugated metal belts and flat belts is schematically shown;

[0026] Figure 5 The overall structure of a dual-core structure product made of a perforated corrugated metal belt and a flat belt is schematically shown;

[0027] Figure 6 The overall structure of a cubic structure product made of perforated corrugated metal strips and flat strips is schematically shown.

[0028] Numbers in the figure: 1-wave band, 2-flat band, 11-wave trough, 12-wave peak, 111-upper convex section, 112-first opening, 121-lower concave section, 122-second opening, 3-metal outer frame. DETAILED DESCRIPTION

[0029] It is easy to understand that according to the technical solution of the utility model, without changing the essential spirit of the utility model, a person skilled in the art can propose a variety of interchangeable structural modes and implementation modes. Therefore, the following specific implementation modes and drawings are only exemplary descriptions of the technical solution of the utility model, and should not be regarded as the entirety of the utility model or as a limitation or restriction to the technical solution of the utility model.

[0030] A metal honeycomb carrier with a turbulent perforated structure includes a metal outer frame 3 and an inner core located in the metal outer frame 3, wherein the metal outer frame 3 is a square structure, and the left and right sides of the metal outer frame 3 are exposed to the outside, and the two ends of the inner core are welded to the inner wall of the metal outer frame 3 as a whole; and the inner core is formed by laminating or rolling a flat belt 2 and a wave belt 1, and a plurality of through holes are evenly opened on the flat belt 2, and the wave belt 1 is a perforated corrugated metal wave belt.

[0031] The following is a detailed description of the perforated corrugated metal belt. Figure 1-2 As shown, the perforated corrugated metal belt is composed of a wave crest portion 12 and a wave trough portion 11 connected in sequence, and a plurality of first cuts are opened on the surface of each wave trough portion 11 at equal intervals along the length direction, and the wave trough portion 11 between the adjacent first cuts along the width direction bulges upward to form an upper convex section 111, and the first cuts at both ends of the upper convex section 111 respectively form a first opening 112; a plurality of groups of second cuts are opened on the surface of each wave crest portion 12 at equal intervals along the length direction, and the wave crest portion 12 between the adjacent second cuts along the width direction is recessed downward to form a lower concave section 121, and the second cuts at both ends of the lower concave section 121 respectively form a second opening 122.

[0032] It is worth noting that the adjacent concave sections 121 and convex sections 111 are arranged in a staggered manner along the length direction of the perforated corrugated metal belt, that is, the concave sections 121 are arranged in the gaps between the adjacent convex sections 111 arranged along the length direction of the perforated corrugated metal belt, and the gap length between the adjacent convex sections 111 should not be less than the length of the concave sections 121, and the spacing between the two ends of the concave sections 121 and the adjacent convex sections 111 is the same. The convex sections 111 are also arranged in the gaps between the adjacent concave sections 121 arranged along the length direction of the perforated corrugated metal belt 1, and the gap length between the adjacent concave sections 121 should not be less than the length of the convex sections 111, and the spacing between the two ends of the convex sections 111 and the adjacent concave sections 121 is the same.

[0033] The peaks 12 and troughs 11 constituting the aforementioned perforated metal wave belt are both wavy or bent structures, and the upper convex section 111 and the lower concave section 121 are both arc-shaped or bent, and when the peaks 12 and the troughs 11 are both wavy structures, the upper convex section 111 and the lower concave section 121 are both arc-shaped, and when the peaks 12 and the troughs 11 are both bent structures, the upper convex section 111 and the lower concave section 121 are also bent, so that the side structure of the resulting perforated metal wave belt is relatively consistent. The height of the aforementioned upper convex section 111 is not greater than the height of the peaks 12, the height of the lower concave section 121 is also not greater than the height of the troughs 11, and the lengths of the upper convex section 111 and the lower concave section 121 are equal.

[0034] The flat belt 2 is described in detail below. Figure 3 As shown, the through holes are evenly arranged in several rows along the length or width direction of the flat belt 2, and two adjacent rows of through holes are staggered. After the through holes are arranged on the flat belt 2 in the above-mentioned manner, due to the staggered arrangement and the limitation of the spacing between the through holes, an equilateral triangle is formed between the centers of any three adjacent through holes.

[0035] After the flat belt 2 and the wave belt 1 are prepared in the above manner, the flat belt 2 and the wave belt 1 are placed in an ultrasonic cleaning machine to remove the oil on the surface, and then the flat belt 2 and the wave belt 1 are processed into the specified length and quantity for standby use. The flat belt 2 and the wave belt 1 are then stacked and placed in a rolling machine to be rolled into a specified size and loaded into the metal outer frame 3 or directly pressed and loaded into the metal outer frame 3. The end surface of the carrier pushed into the shell is then pressed flat, and after being pressed to the specified end distance, the inner core is loaded with solder, and the product is loaded into the furnace for brazing.

[0036] like Figure 4 As shown, according to the first embodiment of the utility model, when a concentric circle structure product is made using a perforated metal corrugated belt and a flat belt 2, a flat belt 2 and a perforated metal corrugated belt are wound with one end as the starting point to form a spiral cylindrical structure, and then the cylindrical structure is placed in a metal outer frame 3 and welded together.

[0037] like Figure 5 As shown, according to the second embodiment of the utility model, when a dual-core structure product is made using a perforated metal corrugated belt and a flat belt 2, multiple flat belts 2 and multiple perforated metal corrugated belts are stacked in sequence and then S-shaped wound into a dual-core structure, and then the dual-core structure is placed in a metal outer frame 3 and welded together.

[0038] like Figure 6 As shown, according to the third embodiment of the present invention, when a cubic structure product is made using a square offset hole metal corrugated belt, a plurality of perforated metal corrugated belts and a flat belt 2 are stacked in sequence and welded to form a cubic structure product.

[0039] The technical scope of the present invention is not limited to the contents described above. Those skilled in the art can make various deformations and modifications to the above embodiments without departing from the technical concept of the present invention, and these deformations and modifications should all fall within the protection scope of the present invention.

Claims

1. A metal honeycomb carrier with a turbulent perforated structure, characterized in that: The invention comprises a metal outer frame (3) and an inner core located in the metal outer frame (3); the inner core is formed by stacking or rolling a flat belt (2) and a corrugated belt (1); a plurality of through holes are evenly opened on the flat belt (2); and the corrugated belt (1) is a perforated corrugated metal belt.

2. The metal honeycomb carrier with turbulent perforated structure according to claim 1, characterized in that: The perforated corrugated metal belt is composed of wave crests (12) and wave troughs (11) connected in sequence, and a plurality of first cuts are provided on the surface of each wave trough (11) at equal intervals along the length direction, and the wave troughs (11) between the adjacent first cuts along the width direction are raised upward to form an upper convex section (111), and the first cuts at both ends of the upper convex section (111) respectively form first openings (112); and a plurality of groups of second cuts are provided on the surface of each wave crest (12) at equal intervals along the length direction, and the wave crests (12) between the adjacent second cuts along the width direction are recessed downward to form a lower concave section (121), and the second cuts at both ends of the lower concave section (121) respectively form second openings (122).

3. The metal honeycomb carrier with turbulent perforated structure according to claim 2, characterized in that: The adjacent concave sections (121) and convex sections (111) are arranged in a staggered manner along the length direction of the perforated corrugated metal strip.

4. The metal honeycomb carrier with turbulent perforated structure according to claim 2, characterized in that: The crest portion (12) and the trough portion (11) are both wavy or bent structures, the upper convex section (111) and the lower concave section (121) are both arc-shaped or bent, the height of the upper convex section (111) is not greater than the height of the crest portion (12), and the height of the lower concave section (121) is not greater than the height of the trough portion (11).

5. The metal honeycomb carrier with turbulent perforated structure according to claim 2, characterized in that: The length of the concave section (121) is equal to that of the convex section (111).

6. The metal honeycomb carrier with turbulent perforated structure according to claim 1, characterized in that: The through holes are evenly arranged in a plurality of rows along the length or width direction of the flat belt (2), two adjacent rows of through holes are staggered, and the spacing between adjacent through holes is 3-5 mm.

7. The metal honeycomb carrier with turbulent perforated structure according to claim 1, characterized in that: The metal outer frame (3) is a square structure or a circular structure, the left and right sides of the metal outer frame (3) are exposed to the outside, and the two ends of the inner core are welded to the inner wall of the metal outer frame (3) as a whole.

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