Metal strip and honeycomb heating element having the same

Abstract

The application discloses a metal strip and a honeycomb heating body with the same. The metal strip comprises a characteristic strip, which has a plurality of alternating wave crest portions and wave trough portions, first fire holes are formed between adjacent wave crest portions, and second fire holes are formed between adjacent wave trough portions. The metal strip further comprises a partition structure, which comprises a first partition sheet and / or a second partition sheet. A first partition sheet is arranged at the lower end of each first fire hole, and the first partition sheet separates the lower end of the first fire hole into at least two small holes. A second partition sheet is arranged at the lower end of each second fire hole, and the second partition sheet separates the lower end of the second fire hole into at least two small holes. The metal strip has the advantages of simple structure, high porosity, low tempering probability, and high fire hole thermal strength.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of burners, in particular to a metal strip and a honeycomb heating body with the same. BACKGROUND

[0002] The size of the infrared burners on the market is much larger than that of the atmospheric burners, but the heat load of the infrared gas stoves is generally lower than that of the atmospheric stoves. In a certain range, higher heat load can better meet the requirements of explosive frying. The metal strip of the existing infrared burners is usually formed by stacking or winding or winding a single layer or multiple layers of metal thin strips. There is a risk of retempering during the ignition and combustion process.

[0003] To solve the problem of retempering, Chinese invention patent ZL200710028113.2 discloses a metal strip with infrared radiation function used on a gas appliance burner. A mesh body or a fiber body is added at the bottom of the surface honeycomb heating layer to prevent retempering. However, the pores of the mesh body or the fiber body are too small, and the resistance is too large when the gas passes through the lower side of the metal strip, which limits the improvement of the heat intensity of the fire hole of the metal strip. At this time, in order to increase the heat load of the infrared gas stove, a larger size metal strip needs to be used, which increases the cost and limits the promotion of the infrared gas stove. SUMMARY

[0004] The present application aims to at least solve one of the problems existing in the prior art to some extent. To this end, the present application provides a metal strip which is simple in structure and easy to manufacture, has high porosity, can reduce the probability of retempering, and can improve the heat intensity of the fire hole. The present application also provides a honeycomb heating body.

[0005] According to the above-mentioned metal strip, the following technical solutions are implemented:

[0006] A metal strip, comprising: a characteristic strip having a plurality of alternating wave peak portions and wave valley portions, a first fire hole being formed between adjacent wave peak portions, and a second fire hole being formed between adjacent wave valley portions; a partition structure comprising a first partition sheet and / or a second partition sheet, a first partition sheet being provided at a lower end of each first fire hole, the first partition sheet separating the lower end of the first fire hole into at least two small holes; a second partition sheet being provided at a lower end of each second fire hole, the second partition sheet separating the lower end of the second fire hole into at least two small holes.

[0007] In some embodiments, the first partition sheet is formed by locally punching or rolling the lower end of the wave valley portion forward, and the upper and lower outer edges of the first partition sheet are cut and separated from the wave valley portion to form an opening;

[0008] The second partitioning sheet is formed by locally punching or rolling the rear part of the lower end of the wave crest, and the upper and lower outer edges of the second partitioning sheet are cut and separated from the wave crest to form an opening.

[0009] In some embodiments, adjacent first partitioning sheets are located in the same or different vertical planes, and adjacent second partitioning sheets are located in the same or different vertical planes.

[0010] In some embodiments, a first hollowed-out protrusion is arranged on the first partitioning sheet and / or the second partitioning sheet, and the first hollowed-out protrusion separates one of the small holes into at least two micro-holes.

[0011] In some embodiments, a ventilation opening is formed on the side of the first hollowed-out protrusion, the upper end of the first hollowed-out protrusion is closed or open, and the lower end of the first hollowed-out protrusion is closed or open.

[0012] In some embodiments, the partitioning structure further comprises a third partitioning sheet and / or a fourth partitioning sheet arranged vertically, a third partitioning sheet is arranged in the middle of each first fire hole, and the third partitioning sheet separates the middle of the first fire hole into at least two small holes; a fourth partitioning sheet is arranged in the middle of each second fire hole, and the fourth partitioning sheet separates the middle of the second fire hole into at least two small holes.

[0013] In some embodiments, the third partitioning sheet is formed by locally punching the front part of the middle of the wave valley, and the upper and lower outer edges of the third partitioning sheet are cut and separated from the wave valley to form an opening; the fourth partitioning sheet is formed by locally punching the rear part of the middle of the wave crest, and the upper and lower outer edges of the fourth partitioning sheet are cut and separated from the wave crest to form an opening.

[0014] In some embodiments, adjacent third partitioning sheets are located in the same or different vertical planes, and the third partitioning sheets and adjacent first partitioning sheets / second partitioning sheets are located in the same or different vertical planes; adjacent fourth partitioning sheets are located in the same or different vertical planes, and the fourth partitioning sheets and adjacent second partitioning sheets / first partitioning sheets are located in the same or different vertical planes.

[0015] In some embodiments, a second hollowed-out protrusion is arranged on the third partitioning sheet and / or the fourth partitioning sheet, and the second hollowed-out protrusion separates one of the small holes into at least two micro-holes.

[0016] In some embodiments, a ventilation opening is formed on the side of the second hollowed-out protrusion, the upper end of the second hollowed-out protrusion is closed or open, and the lower end of the second hollowed-out protrusion is closed or open.

[0017] In some embodiments, a plurality of first slit groups are arranged on the feature belt above the partition structure and spaced apart in the up-down direction, each of the first slit groups comprises a plurality of first slits spaced apart along the length direction of the feature belt, each of the first slits is arranged in the transverse direction, and adjacent first slits in the up-down direction are staggered.

[0018] In some embodiments, the feature belt comprises a plurality of alternating flat sections and corrugated sections, and the corrugated sections have a plurality of alternating wave crest portions and wave trough portions.

[0019] In some embodiments, a plurality of second slit groups are arranged on the flat sections and spaced apart in the up-down direction, each of the second slit groups comprises a plurality of second slits spaced apart along the length direction of the flat sections, each of the second slits is arranged in the transverse direction, and adjacent second slits in the up-down direction are staggered.

[0020] In some embodiments, a wide flat belt is arranged on the back surface of the feature belt and connected to each of the wave trough portions, or the wide flat belt is arranged on the front surface of the feature belt and connected to each of the wave crest portions.

[0021] In some embodiments, a plurality of second slit groups are arranged on the wide flat belt and spaced apart in the up-down direction, each of the second slit groups comprises a plurality of second slits spaced apart along the length direction of the wide flat belt, each of the second slits is arranged in the transverse direction, and adjacent second slits in the up-down direction are staggered.

[0022] According to the above-mentioned honeycomb heating element, the following technical scheme is adopted: a honeycomb heating element comprises a honeycomb body, the honeycomb body is formed by coiling a metal strip as described above, adjacent coiled turns form a pore for passing fuel gas, the porosity of the upper end of the pore is greater than the porosity of the lower end of the pore.

[0023] Compared with the prior art, the present application has at least the following advantages:

[0024] The metal strip of the present application has the following advantages: the structure is simple and easy to manufacture, the porosity is high, the tempering probability is reduced, the thermal intensity of the fire hole is improved, the fuel gas can be fully combusted under heavy load conditions, the honeycomb heating element can heat up faster and heat exchange is more sufficient. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 is an exploded view of the first metal strip in embodiment 1 of the present application;

[0026] Figure 2 is a bottom view of the first metal strip of the embodiment 1 of the present application;

[0027] Figure 3 is a schematic view of the honeycomb body coiling process of the embodiment 1 of the present application;

[0028] Figure 4 is a structural schematic view of the honeycomb body of the embodiment 1 of the present application;

[0029] Figure 5 is a partial enlarged view of the second metal strip of the embodiment 1 of the present application;

[0030] Figure 6 is a partial bottom view of the third metal strip of the embodiment 1 of the present application;

[0031] Figure 7 is a partial enlarged view of the fourth metal strip of the embodiment 1 of the present application;

[0032] Figure 8 is a partial bottom view of the fifth metal strip of the embodiment 1 of the present application;

[0033] Figure 9 is a structural schematic view of the metal strip of the embodiment 2 of the present application;

[0034] Figure 10 is a structural schematic view of the metal strip of the embodiment 3 of the present application;

[0035] Figure 11 is a structural schematic view of the metal strip of the embodiment 4 of the present application;

[0036] Figure 12 is a bottom view of the metal strip of the embodiment 4 of the present application;

[0037] Figure 13 is a schematic view of the honeycomb body coiling process of the embodiment 4 of the present application;

[0038] Figure 14 is a structural schematic view of the honeycomb body of the embodiment 4 of the present application;

[0039] Figure 15 is an exploded view of the metal strip of the embodiment 5 of the present application;

[0040] Figure 16 is a structural schematic view of the metal strip of the embodiment 5 of the present application.

[0041] In the figure: 1- feature band, 101- flat section, 102- corrugated section, 11- wave crest, 12- wave trough, 13- first fire hole, 131- small hole, 132- micro hole, 14- second fire hole, 15- first gap; 21- first partition sheet, 211- first hollow convex, 22- second partition sheet, 23- third partition sheet, 231- second hollow convex, 24- fourth partition sheet; 3- wide flat band, 31- second gap; 4- honeycomb body, 41- central through hole. DETAILED DESCRIPTION

[0042] The following examples are used to illustrate the present application, but the present application is not limited by these examples. Modifications to the specific embodiments of the present application or equivalent substitutions for parts of the technical features are made without departing from the spirit of the present application, which should be covered in the technical solution range of the present application.

[0043] Example 1

[0044] The embodiment provides a honeycomb heating body, which comprises a honeycomb body 4 with a central through hole 41, and the honeycomb body 4 is formed by coiling a metal strip. Of course, the honeycomb heating body can also comprise an inner fixing ring and / or an outer fixing ring, the inner fixing ring is arranged in the central through hole of the honeycomb body 4 and connected with the radial inner side of the honeycomb body 4, and the outer fixing ring is sleeved on the outside of the honeycomb body 4 and connected with the radial outer side of the honeycomb body 4.

[0045] The metal strip comprises a feature band 1 and a partition structure, wherein the feature band 1 is preferably a corrugated band, and of course can also be a semi-hexagonal corrugated band, a rectangular band or various zigzag bands, the feature band 1 has a plurality of wave crests 11 and wave troughs 12 which are arranged alternately and oppositely, and a first fire hole 13 is formed between adjacent wave crests 11, and a second fire hole 14 is formed between adjacent wave troughs 12.

[0046] The partition structure is integrally formed with the feature band 1, and the partition structure comprises a first partition sheet 21 and / or a second partition sheet 22 arranged vertically. The first partition sheet 21 is arranged at the lower end of each first fire hole 13, the opposite ends of the first partition sheet 21 are respectively connected with two wave crests 11 or two wave troughs 12 arranged near the first partition sheet 21, and the first partition sheet 21 divides the lower end of the first fire hole 13 into at least two small holes 131, so that the porosity of the upper end of each first fire hole 13 in the metal strip is higher than that of the lower end. The second partition sheet 22 is arranged at the lower end of each second fire hole 14, the opposite ends of the second partition sheet 22 are respectively connected with two wave troughs 12 or two wave crests 11 arranged near the second partition sheet 22, and the second partition sheet 22 divides the lower end of the second fire hole 14 into at least two small holes 131, so that the porosity of the upper end of each second fire hole 14 in the metal strip is higher than that of the lower end.

[0047] When the characteristic band 1 provided with the first and / or second partitioning sheets 21 and 22 is wound to form the honeycomb body 4, the honeycomb body 4 has a central through hole 41, and the adjacent winding turns form apertures for the gas to pass through. Since the lower end of each first fire hole 13 of the characteristic band 1 is provided with the first partitioning sheet 21 which separates the first fire hole 13 into at least two small holes 131, and / or the lower end of each second fire hole 14 of the characteristic band 1 is provided with the second partitioning sheet which separates the second fire hole 14 into at least two small holes, on one hand, the upper end porosity of the honeycomb body 4 is greater than the lower end porosity of the apertures, compared with the honeycomb heating body disclosed in ZL200710028113.2, the overall porosity of the honeycomb body is higher while the anti-backfire performance is ensured, which is more conducive to the air entrainment (compared with the scheme of adding a mesh body, a fiber body or a metal wire mesh at the bottom of the honeycomb body), is conducive to the full combustion of the gas under heavy load conditions, makes the honeycomb body heat up faster and exchange heat more fully; on the other hand, compared with a simple corrugated band, the first and / or second partitioning sheets 21 and 22 on the characteristic band 1 prevent the valley portion 12 of each winding turn from being recessed with the peak portion 11 of the adjacent winding turn to a certain extent, so that more stable apertures can be formed between the winding turns.

[0048] Specifically, the first partitioning sheet 21 is formed by locally punching or rolling the lower end of the valley portion 12 forward, and the upper and lower outer edges of the first partitioning sheet 21 are cut and separated from the valley portion 12 to form an opening for the gas to pass through, which facilitates rapid processing and manufacturing, and at the same time, the lower end porosity of the first fire hole 13 is lower than the upper end porosity, so as to reduce the backfire probability and reduce the heat conduction of the high-temperature combustion area on the upper side of the honeycomb body 4 to the lower side of the honeycomb body 4, so as to block the movement of the combustion flame to the lower side of the honeycomb body, and the anti-backfire performance of the honeycomb body is improved. The second partitioning sheet 22 is formed by locally punching or rolling the lower end of the peak portion 11 backward, and the upper and lower outer edges of the second partitioning sheet 22 are cut and separated from the peak portion 11 to form an opening for the gas to pass through, which facilitates rapid processing and manufacturing, and at the same time, the lower end porosity of the second fire hole 14 is lower than the upper end porosity, so as to reduce the backfire probability and reduce the heat conduction of the high-temperature combustion area on the upper side of the honeycomb body 4 to the lower side of the honeycomb body 4, so as to block the movement of the combustion flame to the lower side of the honeycomb body, and the anti-backfire performance of the honeycomb body is improved.

[0049] Specifically, the adjacent first partitioning sheets 21 can be located on the same vertical plane or on different vertical planes. The adjacent second partitioning sheets 22 can be located on the same vertical plane or on different vertical planes. Each second partitioning sheet 22 can be located on the same vertical plane as the adjacent first partitioning sheet 21 or on a different vertical plane.

[0050] The specific structure of the metal strip includes but is not limited to any one of the following:

[0051] ReferenceFigures 1-4 The first kind of metal strip material comprises a feature strip 1 and a partition structure. The feature strip 1 is preferably a corrugated strip, which has a plurality of alternating and oppositely directed wave crests 11 and wave troughs 12. First fire holes 13 are formed between adjacent wave crests 11, and second fire holes 14 are formed between adjacent wave troughs 12. The partition structure comprises vertically arranged second partition sheets 22 and vertically arranged third partition sheets 23. A second partition sheet 22 is arranged at the lower end of each second fire hole 14, and the opposite ends of the second partition sheet 22 are integrally connected to the feature strip 1. The second partition sheet 22 separates the lower end of the second fire hole 14 into at least two small holes 131. A third partition sheet 23 is arranged at the middle of each first fire hole 13, and the opposite ends of the third partition sheet 23 are integrally connected to the feature strip 1. The third partition sheet 23 separates the middle of the first fire hole 13 into at least two small holes 131.

[0052] Further, the third partition sheet 23 is formed by locally punching forward from the middle of the wave trough 12, and the upper and lower outer edges of the third partition sheet 23 are cut and separated from the wave trough 12 to form an opening. Adjacent second partition sheets 22 are located on the same vertical plane, and adjacent third partition sheets 23 are located on the same vertical plane. Each second partition sheet 22 and the adjacent third partition sheet 23 are located on the same vertical plane. Of course, the second partition sheet 22 and the third partition sheet 23 can also be located on different vertical planes.

[0053] When the feature strip 1 provided with the second partition sheet 22 and the third partition sheet 23 is coiled to form a honeycomb body 4, see Figures 3-4 A central through hole 41 is formed at the center position of the honeycomb body 4, and apertures for the passage of fuel gas are formed between adjacent coiled turns. The upper end porosity of the apertures is greater than the lower end porosity of the apertures. Since the second partition sheet 22 and the third partition sheet 23 are respectively located at the lower end and the middle of the feature strip 1, when the feature strip 1 is coiled to form the honeycomb body 4, the upper and lower ends of the apertures of the honeycomb body 4 are more stable.

[0054] Referring to Figure 5 The second kind of metal strip material differs from the first kind of metal strip material in that the partition structure further comprises vertically arranged first partition sheets 21. A first partition sheet 21 is arranged at the lower end of each first fire hole 13, and the opposite ends of the first partition sheet 21 are integrally connected to the feature strip 1. The first partition sheet 21 separates the lower end of the first fire hole 13 into at least two small holes 131. Further, adjacent first partition sheets 21 are located on the same vertical plane, and each second partition sheet 22 is located on a different vertical plane from the adjacent first partition sheet 21 and the adjacent third partition sheet 23. Of course, the first partition sheet 21 and the third partition sheet 23 can also be designed to be located on the same vertical plane.

[0055] When the characteristic strip 1 provided with the first, second and third partition sheets 21, 22 and 23 is coiled to form the honeycomb body 4, the porosity of the lower end of the formed honeycomb body 4 is lower, and the backfire resistance is better than the first type.

[0056] Reference Figure 6 The fourth type is different from the first type in that a fourth partition sheet 24 is arranged vertically, and the fourth partition sheet 24 is arranged at the middle of each second fire hole 14, and the opposite ends of the fourth partition sheet 24 are integrally connected with the characteristic strip 1, and the fourth partition sheet 24 separates the middle of the first fire hole 13 into at least two small holes 131.

[0057] Further, the fourth partition sheet 24 is formed by locally punching the middle of the wave crest 11 backward, and the upper and lower outer edges of the fourth partition sheet 24 are cut and separated from the wave crest 11 to form the hole. Adjacent fourth partition sheets 24 are located on the same vertical plane, and each second partition sheet 22 is located on a different vertical plane with adjacent fourth partition sheets 24 and adjacent third partition sheets 23. Of course, the second partition sheet 22 and the fourth partition sheet 24 can also be designed to be located on the same vertical plane.

[0058] When the characteristic strip 1 provided with the second, third and fourth partition sheets 22, 23 and 24 is coiled to form the honeycomb body 4, the upper and lower ends of the formed honeycomb body 4 are more stable than the first or second type.

[0059] Reference Figure 7 The fourth type is different from the first type in that a first hollow protrusion 211 is arranged on each second partition sheet 22, and the first hollow protrusion 211 is formed by locally punching or rolling the second partition sheet 22 backward / forward, and the first hollow protrusion 211 separates one of the small holes 131 into at least two micro-holes 132, so that the porosity of the lower end of the honeycomb body 4 is lower. A second hollow protrusion 231 is arranged on the third partition sheet 23, and the second hollow protrusion 231 is formed by locally punching or rolling the third partition sheet 23 forward / backward, and the second hollow protrusion 231 separates one of the small holes 131 into at least two micro-holes 132, so that the porosity of the middle of the honeycomb body 4 is lower. In other embodiments, the first hollow protrusion 211 on the second partition sheet 22 can be omitted, or the second hollow protrusion 231 on the third partition sheet 23 can be omitted; of course, the first hollow protrusion 211 can also be added to the first partition sheet 21, and at this time the first hollow protrusion 211 is formed by locally punching or rolling the second partition sheet 22 outward, or the second hollow protrusion 231 is arranged on the fourth partition sheet 24, and at this time the second hollow protrusion 231 is formed by locally punching or rolling the fourth partition sheet 24 outward.

[0060] Further, the upper and lower end faces of the first hollowed protrusion 211 are flush with the upper and lower end faces of the second partition sheet 22, and a gas passage is formed on the side face of the first hollowed protrusion 211, which is in communication with the adjacent first fire hole 13, and the upper and lower ends of the first hollowed protrusion 211 are open, so that the gas at the lower end of the first hollowed protrusion 211 can flow into the first hollowed protrusion 211 and then flow out from the top of the first hollowed protrusion 211. Of course, the lower end face of the first hollowed protrusion 211 can be designed to be higher than the lower end face of the second partition sheet 22, in which case the lower end of the first hollowed protrusion 211 can be closed; or the upper end face of the first hollowed protrusion 211 can be designed to be lower than the upper end face of the second partition sheet 22, in which case the upper end of the first hollowed protrusion 211 can be closed.

[0061] Further, the upper and lower end faces of the second hollowed protrusion 231 are flush with the upper and lower end faces of the third partition sheet 23, and a gas passage is formed on the side face of the second hollowed protrusion 231, which is in communication with the adjacent second fire hole 14, and the upper and lower ends of the second hollowed protrusion 231 are open, so that the gas at the lower end of the second hollowed protrusion 231 can flow into the second hollowed protrusion 231 and then flow out from the top of the second hollowed protrusion 231. Of course, the lower end face of the second hollowed protrusion 231 can be designed to be higher than the lower end face of the third partition sheet 23, in which case the lower end of the second hollowed protrusion 231 can be closed; or the upper end face of the second hollowed protrusion 231 can be designed to be lower than the upper end face of the third partition sheet 23, in which case the upper end of the second hollowed protrusion 231 can be closed.

[0062] Reference Figure 8 The fifth kind is different from the fourth kind of metal strip in that the lower end face of the first hollowed protrusion 211 is designed to be higher than the lower end face of the second partition sheet 22, and the upper end face of the first hollowed protrusion 211 can be lower than or flush with the lower end face of the second partition sheet 22, and the upper and lower ends of the first hollowed protrusion 211 are open; and the lower end face of the second hollowed protrusion 231 is higher than the lower end face of the third partition sheet 23, and the upper end face of the second hollowed protrusion 231 can be lower than or flush with the lower end face of the third partition sheet 23, and the upper and lower ends of the second hollowed protrusion 231 are open.

[0063] The sixth kind is different from the first kind of metal strip in that at least two rows of first cut seam groups are arranged on the partition structure and spaced apart from each other in the up-down direction, and at least three or four rows of second cut seam groups are arranged on the wide flat strip and spaced apart from each other in the up-down direction. Thus, through the first cut seam groups, the thermal resistance is increased, the heat of the high-temperature combustion zone on the upper side of the honeycomb body 4 is reduced to conduct to the lower side of the honeycomb body 4, the movement of the combustion flame to the lower side of the honeycomb body is blocked, and the anti-backfire performance of the honeycomb body is further improved.

[0064] The adjacent wave crest 11 and wave trough 12 jointly form a pair of sub-features, each row of first slit groups includes a plurality of first slits 15 arranged at intervals along the length direction of the feature belt 1, each first slit 15 is arranged transversely and at least transversely penetrates through a pair of sub-features, and the upper and lower adjacent first slits 15 are staggered.

[0065] Embodiment 2

[0066] Reference Figure 9 The difference between the present embodiment and embodiment 1 is that the specific structure of the feature belt 1 is different. Specifically, the feature belt 1 includes a plurality of alternating flat sections 101 and corrugated sections 102, the corrugated section 102 has a plurality of alternating wave crests 11 and wave troughs 12, the first fire hole 13 is formed between adjacent wave crests 11, and the second fire hole 14 is formed between adjacent wave troughs 12. A third baffle piece 23 is integrally formed in the middle of each first fire hole 13 to divide the first fire hole 13 into two small holes 131, and a second baffle piece 22 is integrally formed at the lower end of each second fire hole 14 to divide the second fire hole into two small holes.

[0067] When the feature belt 1 provided with the second baffle piece 22 and the third baffle piece 23 is coiled to form a honeycomb body 4, a pore for gas to pass through is formed between adjacent coiled rings at this time, and the flat section 101 and the corrugated section 102 are respectively arranged on different coiled rings, so that one circle of the honeycomb body 4 is the flat section 101 and the other circle is the corrugated section 102, and the two are arranged alternately in the radial direction. Thus, the honeycomb body 4 has high porosity, is not easy to backfire, has high fire hole thermal strength, is easy to process and manufacture, and through the flat section 101, the adjacent corrugated sections 102 in the radial direction are spaced apart from each other, so that the wave trough 12 and the wave crest 11 on each coiled ring do not recess, thereby enabling more stable pores to be formed between the coiled rings, and the porosity of the upper end of the pore is higher than that of the lower end.

[0068] Embodiment 3

[0069] Reference Figure 10 The difference between the present embodiment and embodiment 2 is that at least two rows of first slit groups are arranged above the baffle structure and spaced apart in the up-down direction on each corrugated section 102, and at least three or four rows of second slit groups are arranged spaced apart in the up-down direction on each flat section 101. In this way, by arranging the first slit groups and the second slit groups on the feature belt 1, the thermal resistance is increased, the heat on the upper side of the honeycomb body 4 is reduced to conduct to the lower side of the honeycomb body 4, the movement of the combustion flame to the lower side of the honeycomb body is blocked, and the backfire resistance of the honeycomb body is further improved. In other embodiments, all the first slit groups on each corrugated section 102 can be omitted, or all the second slit groups on each flat section 101 can be omitted.

[0070] The adjacent wave crest 11 and wave trough 12 jointly form a pair of sub-features, each row of first slit groups comprises a plurality of first slits 15 arranged at intervals along the length direction of the corrugated section 102, each first slit 15 is arranged transversely and at least transversely through the pair of sub-features, and the upper and lower adjacent first slits 15 are staggered.

[0071] Each row of second slit groups comprises a plurality of second slits 31 arranged at intervals along the length direction of the flat section 101, each second slit 31 is arranged transversely, and the upper and lower adjacent second slits 31 are staggered.

[0072] Embodiment 4

[0073] Reference Figures 11-14 The difference between the present embodiment and embodiment 1 is that the metal strip further comprises a wide flat strip 3, and the wide flat strip 3 is welded to each wave crest 11 on the front surface of the feature strip 1 or welded to each wave trough 12 on the back surface of the feature strip 1.

[0074] Taking the case that the wide flat strip 3 is welded to the back surface of the feature strip 1, after the barrier structure is manufactured on the feature strip 1, the wide flat strip 3 is welded to each wave trough 12 on the feature strip 1, so that the feature strip 1 with the barrier structure and the wide flat strip 3 are connected as a whole, see Figures 11-12 Then, the two strips are coiled together to form a honeycomb body 4, see Figures 13-14 The center position of the honeycomb body 4 forms a center through hole 41, and the adjacent coiled rings form a pore for the gas to pass through. In this way, the honeycomb body 4 realizes high porosity, is not easy to backfire, and has high thermal strength of the fire hole, while the wave trough 12 and the wave crest 11 on each coiled ring do not recess, so that more stable pores can be formed between the coiled rings, and the porosity of the upper end of the pore is higher than that of the lower end.

[0075] Embodiment 5

[0076] Reference Figures 15-16 The difference between the present embodiment and embodiment 4 is that at least two rows of first slit groups are arranged on the feature strip 1 above the barrier structure and are arranged at intervals upward and downward, and at least three or four rows of second slit groups are arranged on the wide flat strip 3 and are arranged at intervals upward and downward. In this way, through the first slit groups on the feature strip 1 and the second slit groups on the wide flat strip 3, the thermal resistance is increased, the heat of the high-temperature combustion area on the upper side of the honeycomb body 4 is reduced to conduct to the lower side of the honeycomb body 4, the movement of the combustion flame to the lower side of the honeycomb body is blocked, and the backfire prevention performance of the honeycomb body is further improved. In other embodiments, all the first slit groups on the feature strip 1 can be omitted, or all the second slit groups on the wide flat strip 3 can be omitted.

[0077] The wave peak 11 and the wave valley 12 arranged adjacently jointly form a pair of sub-features, each of the first cut seam groups comprises a plurality of first slits 15 arranged at intervals along the length direction of the feature belt 1, each of the first slits 15 is arranged transversely and at least transversely penetrates through the pair of sub-features, and the first slits 15 arranged adjacently in the up-down direction are staggered. Each of the second cut seam groups comprises a plurality of second slits 31 arranged at intervals along the length direction of the planar section 101, each of the second slits 31 is arranged transversely, and the second slits 31 arranged adjacently in the up-down direction are staggered.

[0078] The above merely describes some embodiments of the present application. For those of ordinary skill in the art, several modifications and improvements can be made without departing from the inventive concept, and these all belong to the protection scope of the present application.

Claims

1. A metal strip, characterized in that The utility model relates to a kind of fireproofing structure, including: Characteristics zone (1) with multiple alternatingly arranged wave crest (11) and wave trough (12), first fire hole (13) is formed between adjacent wave crest (11), second fire hole (14) is formed between adjacent wave trough (12); Baffle structure, including first baffle piece (21) and / or second baffle piece (22), first baffle piece (21) is provided at the lower end of each first fire hole (13), and the lower end of the first fire hole (13) is separated into at least two small holes (131) by the first baffle piece (21); Second baffle piece (22) is provided at the lower end of each second fire hole (14), and the lower end of the second fire hole (14) is separated into at least two small holes (131) by the second baffle piece (22); First hollow protrusion (211) is provided on the first baffle piece (21) and / or the second baffle piece (22), and the first hollow protrusion (211) separates one of the small holes (131) into at least two micro-holes; The first baffle piece (21) is formed by locally punching or rolling the lower end of the wave trough (12) forward, and the upper and lower outer edges of the first baffle piece (21) are cut and separated from the wave trough (12) to form an opening; The second baffle piece (22) is formed by locally punching or rolling the lower end of the wave crest (11) backward, and the upper and lower outer edges of the second baffle piece (22) are cut and separated from the wave crest (11) to form an opening.

2. A metal strip according to claim 1, characterized in that Adjacent first baffle pieces (21) are located in the same or different vertical planes, and adjacent second baffle pieces (22) are located in the same or different vertical planes.

3. A metal strip as claimed in claim 2, wherein An air vent is formed on the side of the first hollow protrusion (211), the upper end of the first hollow protrusion (211) is closed or open, and the lower end of the first hollow protrusion (211) is closed or open.

4. The metal strip of claim 1 wherein, The baffle structure further includes vertically arranged third baffle pieces (23) and / or fourth baffle pieces (24), a third baffle piece (23) is provided at the middle of each first fire hole (13), and the third baffle piece (23) separates the middle of the first fire hole (13) into at least two small holes (131); A fourth baffle piece (24) is provided at the middle of each second fire hole (14), and the fourth baffle piece (24) separates the middle of the second fire hole (14) into at least two small holes (131).

5. A metal strip as claimed in claim 4, wherein The third baffle piece (23) is formed by locally punching the middle of the wave trough (12) forward, and the upper and lower outer edges of the third baffle piece (23) are cut and separated from the wave trough (12) to form an opening; The fourth baffle piece (24) is formed by locally punching the middle of the wave crest (11) backward, and the upper and lower outer edges of the fourth baffle piece (24) are cut and separated from the wave crest (11) to form an opening.

6. A metal strip according to claim 4 or 5, characterised in that, Adjacent third baffle pieces (23) are located in the same or different vertical planes, and the third baffle pieces (23) are located in the same or different vertical planes as adjacent first baffle pieces (21) / second baffle pieces (22). The fourth baffle piece (24) is located in the same or different vertical plane as the adjacent second baffle piece (22) / first baffle piece (21).

7. A metal strip as claimed in claim 4, wherein A second hollowed-out protrusion (231) is arranged on the third baffle piece (23) and / or the fourth baffle piece (24), and the second hollowed-out protrusion (231) divides one of the small holes (131) into at least two micro-holes.

8. A metal strip as claimed in claim 7, characterized in that An air vent is arranged on the side of the second hollowed-out protrusion (231), and the upper end of the second hollowed-out protrusion (231) is closed or open, and the lower end of the second hollowed-out protrusion (231) is closed or open.

9. A metal strip as claimed in claim 7, characterized in that A plurality of first slit groups arranged above the baffle structure and spaced apart in the up-down direction are arranged on the feature tape (1), each first slit group includes a plurality of first slits (15) arranged in the length direction of the feature tape (1), each first slit (15) is arranged transversely, and the up-down adjacent first slits (15) are staggered.

10. A metal strip according to any one of claims 1 or 4 or 7-9, characterized in that, The feature tape (1) includes a plurality of alternating planar sections (101) and corrugated sections (102), and the corrugated section (102) has a plurality of alternating wave crest portions (11) and wave trough portions (12).

11. A metal strip as claimed in claim 10, wherein A plurality of second slit groups arranged in the up-down direction are arranged on the planar section (101), each second slit group includes a plurality of second slits (31) arranged in the length direction of the planar section (101), each second slit (31) is arranged transversely, and the up-down adjacent second slits (31) are staggered.

12. A metal strip according to any one of claims 1 or 4 or 7-9, characterized in that, A wide flat tape (3) is further included, the wide flat tape (3) is arranged on the back of the feature tape (1) and connected with each wave trough portion (12), or the wide flat tape (3) is arranged on the front of the feature tape (1) and connected with each wave crest portion (11).

13. A metal strip as claimed in claim 12, characterized in that A plurality of second slit groups arranged in the up-down direction are arranged on the wide flat tape (3), each second slit group includes a plurality of second slits (31) arranged in the length direction of the wide flat tape (3), each second slit (31) is arranged transversely, and the up-down adjacent second slits (31) are staggered.

14. A honeycomb heater, characterized by comprising: A honeycomb body (4) is included, the honeycomb body (4) is formed by coiling a metal strip as claimed in any one of claims 1-13, and a pore for passing gas is formed between adjacent coiled turns, the upper end porosity of the pore is greater than the lower end porosity of the pore.

Images