Metal strip and honeycomb heating element thereof

Abstract

The application discloses a metal strip and a honeycomb heating body thereof. The metal strip comprises a characteristic strip, a plurality of alternating wave crest portions and wave trough portions, a fire hole formed between adjacent wave crest portions, and a fire hole formed between adjacent wave trough portions; and a partition strip, a vertically arranged partition strip connected to the lower end of the characteristic strip, the partition strip transversely penetrating each wave crest portion, each wave trough portion and each fire hole, respectively, and the lower end of each fire hole is separated into at least two small holes by the partition strip. The metal strip of the application has a simple structure, high porosity, can reduce the tempering probability, and improve the area fire hole thermal intensity.

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. 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 stove is generally lower than that of the atmospheric stove. In a certain range, higher heat load can better meet the requirements of explosive frying. The honeycomb heating body of the existing infrared burner is usually stacked or wound by single or multiple layers of metal thin strips, which has the risk of backfire during ignition and combustion.

[0003] To solve the problem of backfire, Chinese invention patent ZL200710028113.2 discloses a honeycomb heating body with infrared radiation function used on a gas appliance burner, which increases a mesh body or a fiber body at the bottom of the surface honeycomb heating layer to prevent backfire. 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 honeycomb heating body, which limits the improvement of the area fire hole heat intensity of the honeycomb heating body. At this time, in order to increase the heat load of the infrared gas stove, a larger size honeycomb heating body is needed, 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 has a simple structure, a high porosity, and can reduce the probability of backfire and improve the area fire hole heat intensity. 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 feature strip having a plurality of alternating wave peak portions and wave valley portions, fire holes being formed between adjacent wave peak portions, and fire holes being formed between adjacent wave valley portions; and a separation strip, a vertically arranged separation strip being connected to a lower end of the feature strip, the separation strip respectively transversely penetrating each wave peak portion, each wave valley portion, and each fire hole, and a lower end of each fire hole being separated into at least two small holes by the separation strip.

[0007] In some embodiments, the separation strip includes a first separation piece, a vertically arranged first clamping groove is opened at the lower end of the junction of the wave peak portion and the wave valley portion, and the first separation piece is respectively transversely provided in the first clamping groove and the fire hole, and the lower end of each fire hole is separated into at least two small holes by the first separation piece.

[0008] In some embodiments, the separation strip comprises a second partition piece, a vertically arranged second clamping slot is formed at the lower end of the front side of each wave crest, the second partition piece is respectively transversely inserted into the second clamping slot and the fire hole, the lower end of each fire hole is separated into at least two small holes by the second partition piece; and / or the separation strip comprises a third partition piece, a vertically arranged third clamping slot is formed at the lower end of the rear side of each wave trough, the third partition piece is respectively transversely inserted into the third clamping slot and the fire hole, the lower end of each fire hole is separated into at least two small holes by the third partition piece.

[0009] In some embodiments, the separation strip comprises a fourth partition piece, a vertically arranged front clamping slot is formed at the lower end of the left side wall of each wave crest, a vertically arranged rear clamping slot is formed at the lower end of the left side wall of each wave trough, the fourth partition piece is respectively transversely inserted into the front clamping slot, the rear clamping slot and the fire hole and connected with the feature strip, the lower end of each fire hole is separated into at least two small holes by the fourth partition piece.

[0010] In some embodiments, the separation strip is provided with a separation part located in the fire hole at a position corresponding to the fire hole, the separation part separates the fire hole into at least three small holes.

[0011] In some embodiments, a baffle is provided in each fire hole and cooperates with the separation strip to be clamped, the baffle separates the small holes into two micro-holes.

[0012] In some embodiments, a plurality of first cutting slot groups are arranged above the separation strip and spaced apart in the up-down direction on the feature strip, each first cutting slot group comprises a plurality of first slits spaced apart in the length direction of the feature strip, each first slit is transversely arranged, and the first slits adjacent in the up-down direction are staggered.

[0013] In some embodiments, the wave crest and the wave trough arranged adjacently together form a pair of sub-features, and each first slit transversely penetrates at least one pair of sub-features.

[0014] In some embodiments, the feature strip comprises a plurality of alternating planar sections and corrugated sections, the corrugated sections have a plurality of alternating wave crests and wave troughs.

[0015] In some embodiments, a plurality of second cutting slot groups are arranged spaced apart in the up-down direction on the planar section, each second cutting slot group comprises a plurality of second slits spaced apart in the length direction of the planar section, each second slit is transversely arranged, and the second slits adjacent in the up-down direction are staggered.

[0016] In some embodiments, a wide flat band is further included, and the wide flat band is connected to each of the wave crest portions in front of the characteristic band or connected to each of the wave trough portions in back of the characteristic band.

[0017] In some embodiments, a plurality of second slit groups are arranged in an up-down interval on the wide flat band, each of the second slit groups includes a plurality of second slits arranged in an interval along the length direction of the wide flat band, and each of the second slits is arranged transversely, and the up-down adjacent second slits are staggered.

[0018] According to the honeycomb heating body provided above, the technical scheme is realized as follows: a honeycomb heating body includes a honeycomb body formed by coiling a metal strip as described above, and a pore is formed between adjacent coiled turns for gas to pass through, and the upper end porosity of the pore is greater than the lower end porosity of the pore.

[0019] Compared with the prior art, the present application has at least the following beneficial effects:

[0020] The metal strip of the present application has a simple structure, high porosity, and can reduce the tempering probability, improve the thermal intensity of the fire hole, facilitate the full combustion of gas under heavy load conditions, make the honeycomb heating body heat up faster and heat exchange more fully. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is an exploded view of the first metal strip in embodiment 1 of the present application;

[0022] Figure 2 is a structural schematic view of the first metal strip in embodiment 1 of the present application;

[0023] Figure 3 is a bottom view of the first metal strip in embodiment 1 of the present application;

[0024] Figure 4 is a schematic view of the coiling process of the honeycomb body in embodiment 1 of the present application;

[0025] Figure 5 is a structural schematic view of the honeycomb body in embodiment 1 of the present application;

[0026] Figure 6 is a partial bottom view of the second metal strip in embodiment 1 of the present application;

[0027] Figure 7 is a partial bottom view of the third metal strip in embodiment 1 of the present application;

[0028] Figure 8is a partial bottom view of the fourth metal strip in the embodiment 1 of the present application;

[0029] Figure 9 is a partial bottom view of the fifth metal strip in the embodiment 1 of the present application;

[0030] Figure 10 is a partial bottom view of the sixth metal strip in the embodiment 1 of the present application;

[0031] Figure 11 is a structural schematic view of the metal strip in the embodiment 2 of the present application;

[0032] Figure 12 is a structural schematic view of another metal strip in the embodiment 2 of the present application;

[0033] Figure 13 is a structural schematic view of the metal strip in the embodiment 3 of the present application;

[0034] Figure 14 is a bottom view of the metal strip in the embodiment 3 of the present application;

[0035] Figure 15 is a schematic view of the honeycomb body coiling process in the embodiment 3 of the present application;

[0036] Figure 16 is a structural schematic view of the honeycomb body in the embodiment 3 of the present application;

[0037] Figure 17 is an exploded view of another metal strip in the embodiment 3 of the present application;

[0038] Figure 18 is a structural schematic view of another metal strip in the embodiment 3 of the present application.

[0039] In the figure: 1-feature strip, 101-flat section, 102-corrugated section, 11-peak part, 111- front clamping slot, 12-valley part, 121-rear clamping slot, 13-burning hole, 131-small hole, 132-micro hole, 141-first clamping slot, 142-second clamping slot, 143-third clamping slot, 15-first gap; 2-separation strip, 201-separation part, 21-first separation piece, 22-second separation piece, 23-third separation piece, 24-fourth separation piece, 25-baffle; 3-wide flat strip, 31-second gap; 4-honeycomb body. DETAILED DESCRIPTION

[0040] 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 replacements to some technical features are made without departing from the spirit of the present application, which should be covered in the technical solution range claimed by the present application.

[0041] Embodiment 1

[0042] The embodiment provides a honeycomb heating body, which comprises a honeycomb body 4 with a central through hole, 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 radially 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 radially outer side of the honeycomb body 4.

[0043] The metal strip comprises vertically arranged characteristic strips 1 and vertically arranged separation strips 2, wherein the characteristic strips 1 are preferably corrugated strips, and of course can also be semi-hexagonal corrugated strips, rectangular strips or various zigzag strips, the characteristic strips 1 have a plurality of alternately arranged and oppositely directed wave crest portions 11 and wave trough portions 12, a fire hole 13 which is open upward and downward and faces forward is formed between adjacent wave crest portions 11, and a fire hole 13 which is open upward and downward and faces backward is formed between adjacent wave trough portions 12. The separation strips 2 are connected to the lower ends of the characteristic strips 1, and the separation strips 2 respectively transversely pass through each wave crest portion 11, each wave trough portion 12 and each fire hole 13, and the lower end of each fire hole 13 is separated into at least two small holes 131 by the separation strips 2, so that the porosity of the upper end of each fire hole 13 is higher than that of the lower end of each fire hole 13.

[0044] When the separation strips 2 are connected to the lower ends of the characteristic strips 1, the characteristic strips 1 and the separation strips 2 are coiled together to form the honeycomb body 4, and the pores for passing the gas are formed between adjacent coiled rings. Since the separation strips 2 which separate the fire holes 13 into at least two small holes 131 are connected to the lower ends of the characteristic strips 1, on the one hand, the porosity of the upper end of the pores is higher than that of the lower end of the pores, 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 sufficient combustion of the gas under a large load condition, makes the honeycomb body heat up faster and exchange heat more fully; on the other hand, the separation strips 2 prevent the wave trough portions 12 on each coiled ring from being recessed with the wave crest portions 11 of the adjacent coiled ring to some extent, so that more stable pores can be formed between the coiled rings.

[0045] Further, the bottom of the separation strip 2 is higher than, lower than or flush with the bottom of the feature strip 1. In this embodiment, the bottom of the separation strip 2 is flush with the bottom of the feature strip 1, which improves the overall aesthetics of the honeycomb body and makes all the small holes 131 located at the lower end of the metal strip or honeycomb body. Compared with the scheme of adding a mesh body, a fiber body or a metal wire mesh at the bottom of the honeycomb body, the anti-backfire function can be achieved without adding a mesh body, a fiber body or a metal wire mesh at the bottom of the honeycomb body 4, while ensuring that the porosity at the lower end of the honeycomb body is high, the resistance of the gas passing through the pores is small, the performance of the burner is good, the gas is fully combusted, and the thermal load of the honeycomb body of the same area (the area fire hole thermal intensity is high) can be larger.

[0046] The specific structure of the metal strip includes but is not limited to any one of the following:

[0047] Reference Figures 1-5 First, the metal strip includes the feature strip 1 and the separation strip 2, and a first clamping groove 141 vertically arranged at the lower end of each junction of the peak part 11 and the valley part 12 of the feature strip 1 is provided, and the first clamping groove 141 is in communication with the adjacent fire hole 13. In this embodiment, the lower end of the first clamping groove 141 penetrates the bottom surface of the feature strip 1, so that the bottom of the first clamping groove 141 is open to form a bottom opening, thereby facilitating the embedding of the separation strip 2 into the first clamping groove 141 from bottom to top. The separation strip 2 includes a first separation piece 21, which is preferably a small flat strip or a narrow flat strip. During installation, the small flat strip or the narrow flat strip is embedded into each first clamping groove 141 of the feature strip 1 from bottom to top and is welded to the feature strip 1, at which time the first separation piece 21 is transversely arranged in each first clamping groove 141 and each fire hole 13 of the feature strip 1, and the lower end of each fire hole 13 is separated by the first separation piece 21 into two small holes 131 arranged in front and back, and the unit ventilation of the small hole 131 is smaller than that of the fire hole 13, and the anti-backfire performance is better. It is particularly pointed out that in other embodiments, the bottom of the first clamping groove 141 can also be designed to be closed, at which time the separation strip 2 can be transversely arranged in the first clamping groove 141 from left to right.

[0048] After the small flat strip or the narrow flat strip is embedded into each first clamping groove 141 of the feature strip 1 from bottom to top and is welded to the feature strip 1, the feature strip 1 and the small flat strip or the narrow flat strip are coiled to form a honeycomb body 4, as shown in Figures 4-5 The upper end of the porosity of the adjacent coiled rings is greater than the lower end of the porosity.

[0049] Reference Figure 6, the second kind, which is different from the first kind of metal strip in that the separation strip 2 further comprises a second separation piece 22 and a third separation piece 23. A vertically arranged second clamping groove 142 is formed at the lower end of the front side of each wave crest 11 of the characteristic strip 1, the second clamping groove 142 is in communication with the adjacent fire hole 13, the bottom of the second clamping groove 142 is open to form a bottom opening, the second separation piece 22 is preferably a small flat strip or a narrow flat strip, which is respectively transversely arranged in the second clamping groove 142 and the fire hole 13 and is welded to the characteristic strip 1. A vertically arranged third clamping groove 143 is formed at the lower end of the rear side of each wave trough 12 of the characteristic strip 1, the third separation piece 23 is preferably a small flat strip or a narrow flat strip, which is respectively transversely arranged in the third clamping groove 143 and the fire hole 13 and is welded to the characteristic strip 1. As can be seen, by arranging three small flat strips or narrow flat strips at the lower end of the characteristic strip 1 in the front-rear direction, each small flat strip or narrow flat strip is respectively transversely arranged in each wave crest 11, each wave trough 12 and each fire hole 13 to separate the lower end of each fire hole 13 into four small holes 131. It is particularly pointed out that in other embodiments, the second separation piece 22 or the third separation piece 23 can be omitted.

[0050] Reference Figure 7 The third kind, which is different from the second kind of metal strip in that the first separation piece 21 is omitted, at this time the separation strip 2 only comprises the second separation piece 22 and the third separation piece 23. When two small flat strips or narrow flat strips are arranged at the lower end of the characteristic strip 1 in the front-rear direction, each small flat strip or narrow flat strip is respectively transversely arranged in each wave crest 11, each wave trough 12 and each fire hole 13 to separate the lower end of each fire hole 13 into three small holes 131.

[0051] Reference Figure 8 The fourth kind, which is different from the first kind of metal strip in that the shape of the separation strip 2 and the mounting method of the separation strip 2 and the characteristic strip 1 are slightly different. A vertically arranged front clamping groove 111 is formed at the lower end of the left side wall of each wave crest 11 of the characteristic strip 1, and a vertically arranged rear clamping groove 121 is formed at the lower end of the left side wall of each wave trough 12 of the characteristic strip 1. The separation strip 2 comprises a fourth separation piece 24, which is preferably a small wave strip, the small wave strip has a plurality of front hollow protrusions and rear hollow protrusions arranged in a staggered manner, the front hollow protrusions and the rear hollow protrusions are in the shape of "concave", of course, other shapes are also possible, the small wave strip is respectively transversely arranged in each front clamping groove 111, each rear clamping groove 121 and each fire hole 13 and connected with the characteristic strip 1, and the lower end of each fire hole 13 is separated by the fourth separation piece 24 into two small holes 131 arranged in front and rear.

[0052] Reference Figure 9, the fifth kind, which is different from the first metal strip in that a partition 201 is arranged in the fire hole 13 at the position corresponding to the partition belt 2, specifically, the first partition 21 is not a small flat belt or a small feature belt, the partition 201 is formed by locally stamping and forming the first partition 21 towards front and back or towards back, the partition 201 is in the shape of "V", and the fire hole 13 is divided into three small holes 131. In other embodiments, the partition 201 can be in the shape of "concave", and the fire hole 13 is divided into three small holes 131, of course, the partition 201 can also be designed in other shapes.

[0053] Reference Figure 10 , the sixth kind, which is different from the first metal strip in that the partition belt 2 further comprises a plurality of baffles 25, and the baffle 25 connected with the partition belt 2 is arranged in each fire hole 13, the baffle 25 and the partition belt 2 form a "cross" shape, and the baffle 25 divides the small hole 131 into a micro hole 132. Specifically, the baffle 25 can be clamped from top to bottom outside the first partition 21 of the partition belt 2, or the first partition 21 of the partition belt 2 is provided with an opening arranged in the front and back direction at the position corresponding to the fire hole 13, and the baffle 25 is transversely arranged in the opening of the first partition 21 and is welded with the first partition 21.

[0054] Embodiment 2

[0055] Reference Figure 11 The difference between this embodiment and embodiment 1 is that the specific structure of the feature belt 1 is different. Specifically, the feature belt 1 comprises a plurality of alternating flat sections 101 and corrugated sections 102, the corrugated section 102 has a plurality of alternating wave crest portions 11 and wave trough portions 12, the fire hole 13 is formed between adjacent wave crest portions 11, and the fire hole 13 is formed between adjacent wave trough portions 12. The lower end of each corrugated section 102 is connected with a vertically arranged partition belt 2, the partition belt 2 is preferably a small flat belt or a narrow flat belt, respectively transversely penetrating each wave crest portion 11, each wave trough portion 12 and each fire hole 13 of the corrugated section 102, and the lower end of each fire hole 13 is divided into at least two small holes 131 by the partition belt 2.

[0056] When the separation band 2 is connected to the lower end of each corrugated section 102 of the feature band 1, the feature band 1 and the separation band 2 are co-wound to form the honeycomb body 4, and the adjacent co-wound rings are formed with the pores for the gas to pass through. At this time, the planar section 101 and the corrugated section 102 are respectively arranged on different co-wound rings, so that one ring of the honeycomb body 4 is the planar section 101 and the other ring is the corrugated section 102, and the two are alternately arranged in the radial direction. In this way, the honeycomb body 4 realizes high porosity, is not easy to backfire, and has high thermal strength of the fire hole, and through the planar section 101, the adjacent corrugated sections 102 in the radial direction are spaced apart from each other, so that the valley part 12 and the peak part 11 on each co-wound ring are not recessed, thereby enabling more stable pores to be formed between the co-wound rings, and the porosity of the upper end of the pores is higher than that of the lower end of the pores.

[0057] Reference Figure 12 Further, at least two rows of first slits are additionally arranged on each corrugated section 102 above the separation band 2 and are arranged in an upper and lower spaced manner, and / or at least three or four rows of second slits are arranged on each planar section 101 in an upper and lower spaced manner. In this way, the first slits and / or the second slits facilitate increasing the thermal resistance and reducing the conduction of heat 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 towards the lower side of the honeycomb body, and further improve the backfire prevention performance of the honeycomb body.

[0058] The peak part 11 and the valley part 12 arranged adjacently form a pair of sub-features. Each row of first slits includes a plurality of first slits 15 arranged in a spaced manner along the length direction of the corrugated section 102, each first slit 15 is transversely arranged and at least transversely penetrates a pair of sub-features, and the upper and lower adjacent first slits 15 are staggered. Each row of second slits includes a plurality of second slits 31 arranged in a spaced manner along the length direction of the planar section 101, each second slit 31 is transversely arranged, and the upper and lower adjacent second slits 31 are staggered.

[0059] Embodiment 3

[0060] Reference Figures 13-16 The difference between the present embodiment and embodiment 1 is that the metal strip material further includes a wide flat band 3. The wide flat band 3 is arranged in front of the feature band 1 and is welded to each peak part 11, or is arranged on the back of the feature band 1 and is welded to each valley part 12.

[0061] In the present embodiment, the wide flat band 3 is welded and fixed to the back of the feature band 1. When the separation band 2 is connected to the lower end of the feature band 1, the wide flat band 3 is welded to each valley part 12 on the feature band 1, so that the separation band 2, the feature band 1 and the wide flat band 3 are connected as a whole, as shown in Figures 13-14 Then, the three bands are co-wound to form the honeycomb body 4, as shown in Figures 15-16, the adjacent coiled turns form apertures for the gas to pass through. Thus, the honeycomb body 4 realizes high porosity, high hot strength of the fire hole, and high resistance to backfire, and the wave troughs 12 and the wave crests 11 on each coiled turn do not sag, so that more stable apertures can be formed between the coiled turns, and the porosity of the apertures at the upper end is higher than that at the lower end.

[0062] Reference Figures 17-18 Further, a plurality of first slit groups are arranged on the characteristic zone 1 above the partition zone 2 and spaced apart vertically, and a plurality of second slit groups are arranged on the wide flat zone 3 and spaced apart vertically. In this way, the plurality of first slit groups and the plurality of second slit groups facilitate increasing the thermal resistance and reducing the heat conduction from the high-temperature combustion zone 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 further improve the backfire resistance of the honeycomb body. It is particularly pointed out that in other embodiments, all the first slit groups or all the second slit groups can be omitted.

[0063] The wave crest 11 and the wave trough 12 arranged adjacently form a pair of sub-features, each first slit group includes a plurality of first slits 15 arranged along the length direction of the characteristic zone 1 and spaced apart, each first slit 15 is arranged transversely and at least transversely penetrates the pair of sub-features, and the first slits 15 arranged adjacently vertically are staggered. Each second slit group includes a plurality of second slits 31 arranged along the length direction of the wide flat zone 3 and spaced apart, each second slit 31 is arranged transversely, and the second slits 31 arranged adjacently vertically are staggered.

[0064] The above only describes some embodiments of the present application. Those skilled in the art can make several modifications and improvements without departing from the concept of the present application, 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 and fireproofing separation belt, including: Characteristic band (1), with multiple alternately arranged wave crest (11) and wave trough (12), fire hole (13) is formed between adjacent wave crest (11), fire hole (13) is formed between adjacent wave trough (12);And Separation band (2), vertically arranged separation band (2) is connected in the lower end of the characteristic band (1), the separation band (2) respectively transversely through each wave crest (11), each wave trough (12) and each fire hole (13), the lower end of each fire hole (13) is separated into at least two small holes (131) by the separation band (2); The separation band (2) is provided with separation part (201) in the fire hole (13) at the position corresponding to the fire hole (13), and the separation part (201) separates the fire hole (13) into at least three small holes (131); A baffle (25) is provided in each fire hole (13) and is matched with the separation band (2) to be clamped, and the baffle (25) separates the small holes (131) into two micro-holes.

2. A metal strip according to claim 1, characterized in that The separation band (2) includes a first separation piece (21), a first clamping groove (141) is vertically arranged and opened at the lower end of the junction of the wave crest (11) and the wave trough (12), and the first separation piece (21) is transversely arranged in the first clamping groove (141) and the fire hole (13), respectively, and the lower end of each fire hole (13) is separated into at least two small holes (131) by the first separation piece (21).

3. A metal strip according to claim 1 or 2, c h a r a c t e r i s e d in that The separation band (2) includes a second separation piece (22), a second clamping groove (142) is vertically arranged and opened at the lower end of the front side of each wave crest (11), and the second separation piece (22) is transversely arranged in the second clamping groove (142) and the fire hole (13), respectively, and the lower end of each fire hole (13) is separated into at least two small holes (131) by the second separation piece (22). The separation band (2) includes a third separation piece (23), a third clamping groove (143) is vertically arranged and opened at the lower end of the rear side of each wave trough (12), and the third separation piece (23) is transversely arranged in the third clamping groove (143) and the fire hole (13), respectively, and the lower end of each fire hole (13) is separated into at least two small holes (131) by the third separation piece (23).

4. The metal strip of claim 1 wherein, The separation band (2) includes a fourth separation piece (24), a front clamping groove (111) is vertically arranged and opened at the lower end of the left side wall of each wave crest (11), and a rear clamping groove (121) is vertically arranged and opened at the lower end of the left side wall of each wave trough (12), and the fourth separation piece (24) is transversely arranged in the front clamping groove (111), the rear clamping groove (121) and the fire hole (13) and connected with the characteristic band (1), respectively, and the lower end of each fire hole (13) is separated into at least two small holes (131) by the fourth separation piece (24).

5. The metal strip of claim 1 wherein, A plurality of first slit groups are arranged on the feature belt (1) above the separation belt (2) and are arranged in an upper and lower interval, each of the first slit groups comprises a plurality of first slits (15) arranged in an interval along the length direction of the feature belt (1), each of the first slits (15) is arranged transversely, and the upper and lower adjacent first slits (15) are arranged in an interlaced manner.

6. A metal strip as claimed in claim 5, characterized in that The wave crest (11) and the wave trough (12) arranged adjacently jointly constitute a pair of sub-features, and each of the first slits (15) at least transversely penetrates a pair of the sub-features.

7. A metal strip according to any one of claims 1 or 5-6, characterized in that, The feature belt (1) comprises a plurality of flat sections (101) and corrugated sections (102) arranged alternately, and the corrugated section (102) has a plurality of wave crests (11) and wave troughs (12) arranged alternately.

8. A metal strip as claimed in claim 7, characterized in that A plurality of second slit groups are arranged on the flat section (101) in an upper and lower interval, each of the second slit groups comprises a plurality of second slits (31) arranged in an interval along the length direction of the flat section (101), each of the second slits (31) is arranged transversely, and the upper and lower adjacent second slits (31) are arranged in an interlaced manner.

9. A metal strip according to claim 1 or 5-6, characterized in that, The wide flat belt (3) is arranged in front of the feature belt (1) and connected with each of the wave crests (11), or the wide flat belt (3) is arranged on the back of the feature belt (1) and connected with each of the wave troughs (12).

10. A metal strip as claimed in claim 9, wherein A plurality of second slit groups are arranged on the wide flat belt (3) in an upper and lower interval, each of the second slit groups comprises a plurality of second slits (31) arranged in an interval along the length direction of the wide flat belt (3), each of the second slits (31) is arranged transversely, and the upper and lower adjacent second slits (31) are arranged in an interlaced manner.

11. A honeycomb heater, characterized by comprising: The honeycomb body (4) is formed by coiling the metal belt material disc as claimed in any one of claims 1-10, and the adjacent coiled rings form a plurality of pores for passing the gas, the upper end porosity of the pores is greater than the lower end porosity of the pores.

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