Metal strip and honeycomb heating element thereof

Abstract

This utility model discloses a metal strip and its honeycomb heating element. The metal strip is formed by winding a strip with metal. The strip consists of at least one flat strip and one feature strip. By providing a first separator and a second separator on the front and back sides of the first side, and by providing a third separator and a fourth separator on the front and back sides of the second side, a first and a third fire-dividing hole can be defined in each first fire hole, and a second and a fourth fire-dividing hole can be defined in each second fire hole, thus making the porosity of the upper end of the honeycomb body greater than that of the lower end.

Description

Technical Field

[0001] This utility model relates to the field of honeycomb technology, and in particular to a metal strip and its honeycomb heating element. Background Technology

[0002] Although the burners of infrared gas stoves on the market are much larger than those of atmospheric burners, the heat load of infrared gas stoves is generally lower than that of atmospheric stoves. Within a certain range, the higher heat load is more in line with the Chinese people's habit of stir-frying.

[0003] To improve the heat load of infrared gas stoves, the requirement for backfire prevention limits the increase in the thermal intensity of the honeycomb burner holes. To further improve the heat load of infrared gas stoves, larger honeycomb cells are usually used, which proportionally increases the cost of the burner, thus limiting the promotion of infrared gas stoves. Summary of the Invention

[0004] The present invention aims to solve, at least to a certain extent, one of the problems existing in the prior art. To this end, the present invention proposes a metal strip with a simple structure, easy to manufacture, high porosity, and is not easy to temper, while also effectively improving the heat intensity of the flame holes.

[0005] In addition, this utility model also proposes a honeycomb heating element, which is reasonably designed so that the honeycomb body can achieve the characteristics of different patterns in the same body and high porosity and light weight, while the fire response speed is fast.

[0006] The first objective mentioned above is achieved through the following technical solution:

[0007] A metal strip comprising:

[0008] The feature strip has a first side and a second side connected in sequence to form a plurality of alternating troughs and crests, a first fire hole is formed between two adjacent troughs, and a second fire hole is formed between two adjacent crests.

[0009] At least one flat band, wherein at least one flat band is disposed on the side of the feature band near the trough portion such that the flat band is respectively connected to a plurality of trough portions, or disposed on the side of the feature band near the crest portion such that the flat band is respectively connected to a plurality of crest portions;

[0010] Multiple first partitions are provided, each of which protrudes from one side of each first side facing the trough portion. The first partitions are connected to the first side to define a first flame hole within the first flame hole. A first through hole communicating with the first flame hole is provided on the first side.

[0011] Multiple second partitions are provided, each of which protrudes from the side of each first side facing the crest portion. The second partitions are connected to the first side to define a second flame hole within the second flame hole. A second through hole communicating with the second flame hole is provided on the first side.

[0012] Multiple third partitions, and multiple first partitions are respectively protruding on the side of each second side facing the trough portion. The first partitions are connected to the second side to define a third flame hole in the first flame hole. A third through hole communicating with the third flame hole is opened on the second side.

[0013] Multiple fourth partitions are provided, each of which protrudes from the side of each second side facing the crest portion. The fourth partitions are connected to the second side to define a fourth flame hole within the second flame hole. A fourth through hole communicating with the fourth flame hole is provided on the second side.

[0014] In some embodiments, the first separator is formed by partially punching or rolling forward on the first side to create the third through hole on the first side, and the second separator is formed by partially punching or rolling backward on the first side to create the second through hole on the first side.

[0015] In some embodiments, the third separator is formed by partially punching or rolling forward on the second side to create the first through hole on the second side, and the fourth separator is formed by partially punching or rolling backward on the second side to create the fourth through hole on the second side.

[0016] In some embodiments, there are two flat bands, one of which is disposed on the side of the feature band near the trough to connect multiple troughs together, and the other flat band is disposed on the side of the feature band near the crest to connect multiple crests together, so that the feature band is located in the middle of the two flat bands.

[0017] In some embodiments, the upper end of the first ignition hole is closed or open, and the lower end of the first ignition hole is closed or open; the upper end of the second ignition hole is closed or open, and the lower end of the second ignition hole is closed or open.

[0018] In some embodiments, the upper end of the third ignition port is closed or open, and the lower end of the third ignition port is closed or open; the upper end of the fourth ignition port is closed or open, and the lower end of the fourth ignition port is closed or open.

[0019] In some embodiments, in the vertical direction, the bottom wall of the first through hole and the top wall of the second through hole are connected to each other or spaced apart, and the bottom wall of the third through hole and the top wall of the fourth through hole are connected to each other or spaced apart.

[0020] In some embodiments, the first partition, the second partition, the first partition, and the fourth partition are located on the same or different planes in the vertical direction.

[0021] In some embodiments, in the vertical direction, the bottom wall of the first partition and the top wall of the second partition are located on the same or different planes, and the bottom wall of the third partition and the top wall of the fourth partition are located on the same or different planes.

[0022] The second objective mentioned above is achieved through the following technical solution:

[0023] A honeycomb heating element includes a metal strip as described in any of the above embodiments. The strip is coiled to form the honeycomb structure, and pores for gas to pass through are formed between adjacent coils. The porosity of the upper end of the pores is greater than that of the lower end of the pores.

[0024] Compared with the prior art, the present invention has at least the following beneficial effects:

[0025] 1. The metal strip of this utility model has a simple structure, is easy to manufacture, has high porosity, is not easy to temper, and can effectively improve the heat intensity of the flame holes.

[0026] 2. The honeycomb heating element of this utility model is reasonably designed, which enables the honeycomb body to achieve the characteristics of different patterns in the same body, high overall porosity, and light weight, while the fire response speed is relatively fast. Attached Figure Description

[0027] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the honeycomb heating element in Embodiment 1 of this utility model;

[0029] Figure 2 This is a schematic diagram of the structure during the winding process of the honeycomb heating element in Embodiment 1 of this utility model;

[0030] Figure 3 This is a schematic diagram of the material-carrying structure in Embodiment 1 of this utility model;

[0031] Figure 4 yes Figure 3 A magnified view of part A in the middle;

[0032] Figure 5 This is a top view of the material strip in Embodiment 1 of this utility model;

[0033] Figure 6 yes Figure 5 A magnified view of part B in the middle section;

[0034] Figure 7 This is a schematic diagram of the material-carrying portion structure in Embodiment 1 of this utility model;

[0035] Figure 8 yes Figure 7 A magnified view of part C in the middle;

[0036] Figure 9 This is a schematic diagram of the material-carrying portion structure in Embodiment 2 of this utility model;

[0037] Figure 10 yes Figure 9 A magnified view of part D in the middle. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below in conjunction with the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. The components of the embodiments of this utility model can be arranged and designed in various different configurations.

[0039] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of the claimed invention.

[0040] Example 1:

[0041] like Figures 1 to 8 As shown, this embodiment provides a honeycomb heating element, including the metal strip described in this embodiment. The strip 9 is coiled to form a honeycomb body 91. Pores for gas to pass through are formed between adjacent coils. The porosity at the upper end of the pores is greater than that at the lower end of the pores.

[0042] Its design is reasonable, which allows the honeycomb structure to achieve the characteristics of different patterns in the same body, high overall porosity, and light weight, while also having a fast fire response speed.

[0043] In addition, in this embodiment, the honeycomb heating element is preferably applied to a stove. After the material 9 is coiled to form a honeycomb body 91, a central through hole 92 is provided in the middle of the honeycomb body 91.

[0044] Specifically, material 9 includes:

[0045] The feature band 1 has a first side 11 and a second side 12 connected in sequence to form a plurality of alternating troughs 13 and crests 14, a first fire hole 2 is formed between two adjacent troughs 13, and a second fire hole 3 is formed between two adjacent crests 14.

[0046] Two flat bands 4, a feature band 1 is set in the middle of the two flat bands 4, and each flat band 4 is connected to multiple troughs 13 or multiple crests 14 respectively.

[0047] Multiple first partitions 5 are respectively protruding on the side of each first side 11 facing the trough portion 13. The first partitions 5 are connected to the first side 11 to define the first flame hole 51 in the first flame hole 2. A first through hole 52 communicating with the first flame hole 51 is provided on the first side 11.

[0048] Multiple second partitions 6 are provided on the side of each first side 11 facing the crest portion 14. The second partitions 6 are connected to the first side 11 to define the second flame hole 61 in the second flame hole 3. A second through hole 62 communicating with the second flame hole 61 is provided on the first side 11.

[0049] Multiple third partitions 7 are respectively protruding on the side of each second side 12 facing the trough portion 13. The first partition 7 is connected to the second side 12 to define the third flame hole 71 in the first flame hole 2. A third through hole 72 communicating with the third flame hole 71 is opened on the second side 12.

[0050] Multiple fourth partitions 8 are respectively protruding on the side of each second side 12 facing the crest portion 14. The fourth partitions 8 are connected to the second side 12 to define a fourth flame hole 81 in the second flame hole 3. A fourth through hole 82 communicating with the fourth flame hole 81 is provided on the second side 12.

[0051] In this embodiment, the honeycomb body 91 is formed by winding a metal strip 9. The strip 9 consists of at least one flat strip 4 and one feature strip 1. The feature strip 1 has a first side 11 and a second side 12 connected in sequence. The first side 11 and the second side 12 are bent to form a plurality of alternating troughs 13 and crests 14. A flat strip 4 is connected to each trough 13 to connect the plurality of troughs 13 together, or a flat strip 4 is connected to each crest 14 to connect the plurality of crests 14 together. The feature strip 1 and the flat strip 4 are wound together. The honeycomb structure 91 is formed by winding, thereby achieving high porosity, resistance to tempering, and high heat intensity of the flame holes. At the same time, the flat strip 4 prevents the crests 14 or troughs 13 on each winding ring from sinking, thus forming more stable pores between the winding rings. The porosity at the upper end of the pore is higher than that at the lower end. Then, a first flame hole 2 is formed between two adjacent troughs 13, and a second flame hole 3 is formed between two adjacent crests 14. In this way, the first flame hole 2 and the second flame hole 3 can be separated by the cooperation of the first side 11 and the second side 12.

[0052] By providing a first partition 5 and a second partition 6 on the front and back sides of the first side 11 respectively, the first partition 5 is connected to the first side 11 to define a first flame hole 51 within the first flame hole 2. Simultaneously, the second partition 6 is connected to the first side 11 to define a second flame hole 61 within the second flame hole 3. Furthermore, by providing a third partition 7 and a fourth partition 8 on the front and back sides of the second side 12 respectively, the third partition 7 is connected to the second side 12 to define a third flame hole 71 within the first flame hole 2. Thus, spaced partitions are defined within each first flame hole 2. The first and third flame distribution holes 51 and 71 are connected to the second side 12 by the fourth separator 8 to define the fourth flame distribution hole 81 within the second flame hole 3. Thus, the second flame distribution hole 61 and the fourth flame distribution hole 81 are defined at intervals within each second flame hole 3. This makes the porosity of the upper end of the honeycomb body 91 greater than that of the lower end, resulting in less resistance to the gas passing through the pores. Compared with the solution of adding a metal mesh at the bottom, the burner has better injection performance and more complete gas combustion. It can enable a larger heat load to be configured in the same area of ​​the honeycomb body 91, that is, the area flame hole heat intensity is high, the combustion temperature is higher, and the thermal efficiency of radiative heat exchange is high. Because the honeycomb structure of an infrared burner operates at a high temperature, typically exceeding 1000℃, the flame surface tends to shift downwards during combustion within the high-temperature honeycomb structure 91, potentially causing backfire. By using small holes on the lower side of the honeycomb structure 91 to reduce its porosity, the flow rate of the gas through these holes increases. Considering that the size of the small holes is close to the pore diameter during quenching, they provide some obstruction to the downward-moving flame surface. This prevents backfire even when the gas burns within the higher-temperature honeycomb structure 91. The structure is simple, easy to manufacture, has high porosity, is less prone to backfire, and effectively enhances the thermal intensity of the flame holes.

[0053] In addition, in this embodiment, the feature strip 1 is preferably a corrugated strip, but it can also be a semi-hexagonal corrugated strip, a rectangular strip or various serrated strips. The feature strip 1 has multiple alternating troughs 13 and crests 14 facing opposite directions. A first fire hole 2 is formed between adjacent troughs 13 and a second fire hole 3 is formed between adjacent crests 14.

[0054] Furthermore, the first partition 5 is formed by punching or rolling a portion of the first side 11 forward to form a first through hole 52 on the first side 11, and the second partition 6 is formed by punching or rolling a portion of the first side 11 backward to form a second through hole 62 on the first side 11.

[0055] Preferably, the third partition 7 is formed by partially punching or rolling forward on the second side 12 to form a first through hole 52 on the second side 12, and the fourth partition 8 is formed by partially punching or rolling backward on the second side 12 to form a fourth through hole 82 on the second side 12.

[0056] In this embodiment, a first partition 5 with a hollowed-out protrusion structure is formed by forward rolling or high-speed stamping at the front position of the first side 11. This allows the first partition 5 to connect with the first side 11, defining the first flame distribution hole 51 within the first flame hole 2. Consequently, a first through hole 52 communicating with the first flame distribution hole 51 is formed on the first side 11. Furthermore, by cutting the flat strip 4 vertically, the first flame distribution hole 51 is made to connect with the second flame distribution hole 61 through the corresponding first through hole 52, thereby increasing the through hole ratio. Simultaneously, on the back side of the first side 11... The second partition 6, formed by backward rolling or high-speed stamping, has a hollowed-out protruding structure. The second partition 6 can be connected to the first side 11 to define the second ignition hole 61 within the second ignition hole 3. A second through hole 62 connected to the second ignition hole 61 is formed on the first side 11. Furthermore, by cutting the flat strip 4 in the vertical direction, the second ignition hole 61 can be made to pass through the corresponding second through hole 62 and the first ignition hole 51 to improve the through hole ratio. At the same time, no additional consumables are required, which facilitates the rapid processing and forming of the feature strip and improves production efficiency.

[0057] Furthermore, a third partition 7 with a hollowed-out protrusion structure is formed on the front side of the second side 12 by forward rolling or high-speed stamping. This allows the third partition 7 to connect with the second side 12, defining a third ignition hole 71 within the first ignition hole 2. Consequently, a third through hole 72 communicating with the third ignition hole 71 is formed on the second side 12. Furthermore, by cutting the flat strip 4 vertically, the third ignition hole 71 is made to connect with the fourth ignition hole 81 through the corresponding third through hole 72, thereby increasing the through hole ratio. Simultaneously, on the back side of the second side 12... The second partition 6 is formed by rolling or high-speed stamping to create a hollowed-out protrusion structure. The second partition 6 is connected to the second side 12 to define the fourth ignition hole 81 within the second ignition hole 3. A second through hole 62 connected to the fourth ignition hole 81 is formed on the second side 12. Furthermore, by cutting the flat strip 4 in the vertical direction, the fourth ignition hole 81 is made to pass through the corresponding second through hole 62 and the third ignition hole 71 to improve the through hole ratio. At the same time, no additional consumables are required, which facilitates the rapid processing and forming of the feature strip to improve production efficiency.

[0058] Preferably, there are two flat bands 4. One flat band 4 is disposed on the side of the feature band 1 near the trough 13 to connect multiple troughs 13 together, and the other flat band 4 is disposed on the side of the feature band 1 near the crest 14 to connect multiple crests 14 together, so that the feature band 1 is located in the middle position of the two flat bands 4.

[0059] Specifically, the upper end of the first ignition hole 51 is closed or open, and the lower end of the first ignition hole 51 is closed or open; the upper end of the second ignition hole 61 is closed or open, and the lower end of the second ignition hole 61 is closed or open.

[0060] In this embodiment, if the upper end of the first flame divider 51 is closed, then the lower end of the first flame divider 51 is open. In this way, some of the gas in the first flame divider 51 can pass through the lower end of the first flame divider 51 and the first through hole 52 in sequence and then enter the second flame divider 3. Similarly, if the upper end of the first flame divider 51 is open, then the lower end of the first flame divider 51 is closed. In this way, some of the gas in the second flame divider 3 can pass through the first through hole 52 and the upper end of the first flame divider 51 in sequence and then enter the first flame divider 2. More preferably, if the upper end of the second flame divider 61 is closed, then the lower end of the second flame divider 61 is open. In this way, some of the gas in the second flame hole 3 can enter the first flame hole 2 through the lower end of the second flame divider 61 and the second through hole 62 in sequence. Similarly, if the lower end of the second flame divider 61 is closed, then the upper end of the second flame divider 61 is open. In this way, some of the gas in the first flame hole 2 can enter the second flame hole 3 through the second through hole 62 and the upper end of the second flame divider 61 in sequence.

[0061] Preferably, the upper end of the third ignition hole 71 is closed or open, and the lower end of the third ignition hole 71 is closed or open; the upper end of the fourth ignition hole 81 is closed or open, and the lower end of the fourth ignition hole 81 is closed or open.

[0062] In this embodiment, if the upper end of the third flame divider 71 is closed, then the lower end of the third flame divider 71 is open. In this way, some of the gas in the first flame hole 2 can enter the second flame hole 3 through the lower end of the third flame divider 71 and the third through hole 72 in sequence. Similarly, if the upper end of the third flame divider 71 is open, then the lower end of the third flame divider 71 is closed. In this way, some of the gas in the second flame hole 3 can enter the first flame hole 2 through the third through hole 72 and the upper end of the third flame divider 71 in sequence. More preferably, if the upper end of the fourth flame port 81 is closed, then the lower end of the fourth flame port 81 is open. In this way, some of the gas in the second flame port 3 can enter the first flame port 2 through the lower end of the fourth flame port 81 and the second through hole 62. Similarly, if the lower end of the fourth flame port 81 is closed, then the upper end of the fourth flame port 81 is open. In this way, some of the gas in the first flame port 2 can enter the second flame port 3 through the fourth through hole 82 and the upper end of the fourth flame port 81.

[0063] Preferably, the hydraulic diameter of the third fire hole 71 is the same as the hydraulic diameter of the fourth fire hole 81.

[0064] In this embodiment, the first ignition hole 51 is formed by rolling or high-speed stamping of the first separator 5. The first separator 5 separates the first ignition hole 51 from the first ignition hole 2. More preferably, the upper end and the lower end of the first ignition hole 51 are open, so that the upper and lower ends of the first ignition hole 51 are connected to the first ignition hole 2 respectively, thereby improving the throughput. Furthermore, the second ignition hole 61 is formed by rolling or high-speed stamping of the second separator 6. The second separator 6 separates the second ignition hole 61 from the second ignition hole 3. More preferably, the upper end and the lower end of the second ignition hole 61 are open, so that the upper and lower ends of the second ignition hole 61 are connected to the second ignition hole 3 respectively, thereby improving the throughput.

[0065] Furthermore, the first flame distribution hole 71 is formed by rolling or high-speed stamping of the third separator 7. The third separator 7 separates the first flame distribution hole 71 from the first flame hole 2. More preferably, the upper end and the lower end of the first flame distribution hole 71 are open, thus connecting the upper and lower ends of the first flame distribution hole 71 to the first flame hole 2, thereby increasing the throughput. Furthermore, the fourth flame distribution hole 81 is formed by rolling or high-speed stamping of the fourth separator 8. The fourth separator 8 separates the fourth flame distribution hole 81 from the second flame hole 3. More preferably, the upper end and the lower end of the fourth flame distribution hole 81 are open, thus connecting the upper and lower ends of the fourth flame distribution hole 81 to the second flame hole 3, thereby increasing the throughput. Preferably, the feature band 1, the first separator 5, the second separator 6, the third separator 7, and the fourth separator 8 are preferably integrally formed.

[0066] More preferably, since a fire-dividing hole is correspondingly separated in the large fire holes at both ends of the first side 11, and a fire-dividing hole is correspondingly separated in the large fire holes at both ends of the second side 12, the cross-sectional area of ​​the fire-dividing hole is smaller than that of the large fire hole. This makes the hydraulic diameter of the fire-dividing hole smaller. Specifically, Dh = 4A / P, where Dh is the hydraulic diameter, A is the area of ​​the sub-hole, and P is the perimeter of the sub-hole. This is equivalent to directional densification of the fire holes on the lower side of the honeycomb body 91, and the hydraulic diameter of the third fire-dividing hole 71 is the same as that of the fourth fire-dividing hole 81. Its porosity is significantly improved compared to the scheme of adding wire mesh, and it can also achieve the function of preventing backfire. The fire holes on the upper side of the honeycomb body 91 are not densified, which is conducive to the complete combustion and stable combustion of the gas. The entire honeycomb body 91 achieves the characteristics of honeycomb body with different meshes, high overall porosity, and light weight. At the same time, it also has a fast fire response speed, that is, fast heating and fast heat dissipation.

[0067] Specifically, in the vertical direction, the bottom wall of the first through hole 52 is connected to or spaced apart from the top wall of the second through hole 62, and the bottom wall of the third through hole 72 is connected to or spaced apart from the top wall of the fourth through hole 82.

[0068] Preferably, in the vertical direction, the first separator 5, the second separator 6, the first separator 7, and the fourth separator 8 are located on the same or different planes.

[0069] Specifically, in the vertical direction, the bottom wall of the first partition 5 and the top wall of the second partition 6, which are adjacent to each other, are located on different planes, and the bottom wall of the third partition 7 and the top wall of the fourth partition 8, which are adjacent to each other, are located on the same or different planes.

[0070] In this embodiment, in the vertical direction, two adjacent first separators 5 are located on the same plane, and two adjacent second separators 6 are located on the same plane. Thus, a row of second separators 6 and first separators 5 can be respectively arranged in the vertical direction of the first side 11 of the feature band 1. More preferably, in this embodiment, the bottom wall of the adjacent first separator 5 and the top wall of the second separator 6 are located on different planes, thus, in the vertical direction, the bottom wall of the first through hole 52 and the top wall of the second through hole 62 are spaced apart. Furthermore, in the vertical direction, two adjacent third separators 7 are located on the same plane, and two adjacent fourth separators 8 are located on the same plane. Thus, a row of fourth separators 8 and third separators 7 can be respectively arranged in the vertical direction of the second side 12 of the feature band 1. More preferably, in this embodiment, the bottom wall of the adjacent third separator 7 and the top wall of the fourth separator 8 are located on different planes, thus, in the vertical direction, the bottom wall of the third through hole 72 and the top wall of the fourth through hole 82 are spaced apart.

[0071] More preferably, after the feature band 1 is coiled to form a honeycomb body 91, pores for gas combustion are formed between adjacent coiled rings. At this time, the flat band 4 and the feature band 1 are respectively configured to be located on different coiled rings, so that one ring of the honeycomb body 91 is the flat band 4 and the other ring is the corrugated feature band 1, and the two are alternately arranged in the radial direction. Thus, the honeycomb body 91 achieves high porosity, is not prone to flashback, has high heat intensity of the flame holes, and is easy to process and manufacture.

[0072] Example 2:

[0073] like Figure 9 and 10As shown, this embodiment provides a honeycomb heating element. Similar to Embodiment 1, the honeycomb body 91 is formed by winding a metal strip 9. The strip 9 has two flat strips 4 and a feature strip 1 positioned between the two flat strips 4. A first separator 5 and a second separator 6 are respectively provided on the front and back sides of the first side 11. The first separator 5 is connected to the first side 11 to define a first flame distribution hole 51 within the first flame hole 2. Simultaneously, the second separator 6 is connected to the first side 11 to define a second flame distribution hole 61 within the second flame hole 3. Furthermore, a third separator 7 and a fourth separator 8 are respectively provided on the front and back sides of the second side 12. The third separator 7 is connected to the second side 12 to define a third flame distribution hole 71 within the first flame hole 2. This allows for the definition of spaced first and third fire distribution holes 51 and 71 within each first fire hole 2. Simultaneously, the fourth separator 8 connects with the second side 12 to define a fourth fire distribution hole 81 within each second fire hole 3. This results in spaced second and fourth fire distribution holes 61 and 81 within each second fire hole 3. Consequently, the porosity at the upper end of the honeycomb 91 is greater than that at the lower end, reducing the resistance of the gas passing through the pores. Compared to adding a metal mesh at the bottom, this design improves burner ejection performance, ensures more complete gas combustion, and allows for a larger heat load on the same area of ​​the honeycomb 91. This translates to higher area fire hole heat intensity, higher combustion temperature, and higher radiative heat exchange efficiency. Furthermore, it prevents backfire when the gas burns within the higher-temperature honeycomb 91.

[0074] Preferably, in the vertical direction, the bottom wall of the first partition 5 and the top wall of the second partition 6 are located on the same plane, and the bottom wall of the third partition 7 and the top wall of the fourth partition 8 are located on the same plane.

[0075] Unlike Embodiment 1, in this embodiment, a row of second separators 6 and first separators 5 are respectively arranged in the vertical direction of the first side 11 of the feature strip 1. At the same time, the bottom wall of the adjacent first separator 5 and the top wall of the second separator 6 are located on the same plane. Thus, in the vertical direction, the bottom wall of the first through hole 52 and the top wall of the second through hole 62 are interconnected. In addition, in the vertical direction of the second side 12 of the feature strip 1, a row of third separators 7 and fourth separators 8 are respectively arranged. At the same time, the bottom wall of the adjacent third separator 7 and the top wall of the fourth separator 8 are located on the same plane. Thus, in the vertical direction, the bottom wall of the third through hole 72 and the top wall of the fourth through hole 82 are interconnected. In this embodiment, the structure of the rolling die or stamping die is simpler when processing the metal strip, and the production cost of the product can be effectively reduced.

[0076] The above descriptions are merely some embodiments of this utility model. For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of this utility model, and all such modifications and improvements fall within the protection scope of this utility model.

Claims

1. A metal strip, characterized in that include: The feature band (1) has a first side (11) and a second side (12) connected in sequence to form a plurality of alternating troughs (13) and crests (14), a first fire hole (2) is formed between two adjacent troughs (13), and a second fire hole (3) is formed between two adjacent crests (14). At least one flat band (4) is disposed on the side of the feature band (1) near the trough (13) so that the flat band (4) is connected to a plurality of troughs (13) respectively, or is disposed on the side of the feature band (1) near the crest (14) so ​​that the flat band (4) is connected to a plurality of crests (14) respectively; Multiple first partitions (5) are provided, each of which protrudes from each first side (11) on the side facing the trough portion (13). The first partitions (5) are connected to the first side (11) to define a first fire hole (51) in the first fire hole (2). A first through hole (52) communicating with the first fire hole (51) is provided on the first side (11). Multiple second partitions (6) are provided, each of which protrudes from the side of each first side (11) facing the crest portion (14). The second partitions (6) are connected to the first side (11) to define a second flame hole (61) within the second flame hole (3). A second through hole (62) communicating with the second flame hole (61) is provided on the first side (11). Multiple third partitions (7) are provided, each of which protrudes from the side of each second side (12) facing the trough portion (13). The first partition (7) is connected to the second side (12) to define a third fire hole (71) in the first fire hole (2). A third through hole (72) communicating with the third fire hole (71) is provided on the second side (12). Multiple fourth partitions (8) are provided, each of which protrudes from the side of each second side (12) facing the crest portion (14). The fourth partitions (8) are connected to the second side (12) to define a fourth fire hole (81) within the second fire hole (3). A fourth through hole (82) communicating with the fourth fire hole (81) is provided on the second side (12).

2. A metal strip according to claim 1, characterized in that The first separator (5) is formed by punching or rolling a portion of the first side (11) forward to form the third through hole (72) on the first side (11), and the second separator (6) is formed by punching or rolling a portion of the first side (11) backward to form the second through hole (62) on the first side (11).

3. The metal strip of claim 1 wherein, The third partition (7) is formed by punching or rolling a portion of the second side (12) forward to form the first through hole (52) on the second side (12), and the fourth partition (8) is formed by punching or rolling a portion of the second side (12) backward to form the fourth through hole (82) on the second side (12).

4. The metal strip of claim 1 wherein, There are two flat bands (4). One flat band (4) is disposed on the side of the feature band (1) near the trough (13) to connect multiple troughs (13) together. The other flat band (4) is disposed on the side of the feature band (1) near the crest (14) to connect multiple crests (14) together, so that the feature band (1) is located in the middle position of the two flat bands (4).

5. The metal strip of claim 1 wherein, The upper end of the first ignition hole (51) is closed or open, and the lower end of the first ignition hole (51) is closed or open. The upper end of the second ignition hole (61) is closed or open, and the lower end of the second ignition hole (61) is closed or open.

6. A metal strip as claimed in claim 1, wherein The upper end of the third fire distribution hole (71) is closed or open, and the lower end of the third fire distribution hole (71) is closed or open. The upper end of the fourth fire distribution hole (81) is closed or open, and the lower end of the fourth fire distribution hole (81) is closed or open.

7. A metal strip as claimed in claim 1, wherein In the vertical direction, the bottom wall of the first through hole (52) is connected to or spaced apart from the top wall of the second through hole (62), and the bottom wall of the third through hole (72) is connected to or spaced apart from the top wall of the fourth through hole (82).

8. A metal strip according to claim 1, characterized in that, In the vertical direction, the first separator (5), the second separator (6), the first separator (7), and the fourth separator (8) are located on the same or different planes.

9. A metal strip according to claim 1, characterized in that, In the vertical direction, the bottom wall of the first partition (5) and the top wall of the second partition (6) are located on the same or different planes; The bottom wall of the third partition (7) and the top wall of the fourth partition (8) are located on the same or different planes.

10. A honeycomb heating element, characterized in that, The material includes a metal strip (9) as described in any one of claims 1 to 9, wherein the strip (9) is coiled to form the honeycomb body (91), and pores for gas to pass through are formed between adjacent coils, wherein the porosity of the upper end of the pores is greater than the porosity of the lower end of the pores.

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