Infrared metal honeycomb body and infrared metal burner

Abstract

The present invention belongs to the technical field of domestic gas appliances, and particularly relates to an infrared metal honeycomb body and an infrared metal burner. The infrared metal honeycomb body is an annular layered structure formed by coiling a metal strip. Honeycomb holes for gas flow are formed between adjacent coiled circles. The honeycomb body further includes a plurality of blocking components, and each blocking component is provided with a ventilation hole; each blocking component is connected to each coiled circle to block heat radiation from the direction of the outlet of the honeycomb hole; the ventilation hole is communicated with the honeycomb hole for delivering gas to the honeycomb hole; in the intake direction, the cross-sectional area of the ventilation hole is smaller than the cross-sectional area of the honeycomb hole. The infrared metal burner includes a burner body and the above-mentioned infrared metal honeycomb body; the infrared metal honeycomb body is located inside the burner body. The present invention can effectively solve the problem of relatively high backfire probability existing in the current infrared metal honeycomb body.

Description

Technical Field

[0001] The present invention belongs to the technical field of infrared metal burners, and particularly relates to an infrared metal honeycomb body and an infrared metal burner. Background Art

[0002] At present, most of the infrared metal honeycomb bodies on the market are formed by laminating, winding or coiling single-layer or multi-layer metal thin strips, and honeycomb holes for the flow of mixed gas are formed inside the honeycomb body and are transparent from top to bottom. However, there is a risk of flashback during the ignition and combustion of the current infrared honeycomb body, and the heat reflection generated by the bottom of the pot will enter the burner through the honeycomb holes, increasing the temperature inside the burner and the probability of flashback, presenting a potential safety hazard. Summary of the Invention

[0003] In order to solve the problem of a relatively high probability of flashback in the current infrared metal honeycomb body, the present invention provides an infrared metal honeycomb body.

[0004] The present invention also provides an infrared metal burner applying the above infrared metal honeycomb body.

[0005] In order to solve the above problems, the present invention adopts the following solutions:

[0006] An infrared metal honeycomb body, which is an annular layered structure formed by coiling a metal strip. Honeycomb holes for gas flow are formed between adjacent coiled turns. The honeycomb body further includes a plurality of blocking components, and each blocking component is provided with a ventilation hole; each blocking component is connected to each coiled turn to block the heat radiation from the direction of the outlet of the honeycomb hole; the ventilation hole is communicated with the honeycomb hole for delivering gas to the honeycomb hole; in the intake direction, the cross-sectional area of the ventilation hole is smaller than the cross-sectional area of the honeycomb hole.

[0007] A further improvement of the infrared metal honeycomb body of the present invention lies in that the blocking component is arranged at the intake of the honeycomb hole.

[0008] A further improvement of the infrared metal honeycomb body of the present invention lies in that the blocking component includes a reflecting portion; the reflecting surface of the reflecting portion faces the outlet direction of the honeycomb hole for reflecting the heat radiation from the outlet direction of the honeycomb hole.

[0009] A further improvement of the infrared metal honeycomb body of the present invention lies in that an air flow gap for gas flow is formed between the blocking component and the adjacent coiled turn.

[0010] A further improvement of the infrared metal honeycomb body of the present invention lies in that the edges of each coiled turn adjacent to the intake of the honeycomb hole are sequentially turned over towards the adjacent coiled turn to form the blocking component.

[0011] A further improvement of the infrared metal honeycomb body of the present invention lies in that each coiled layer is provided with protrusions, and the protrusions of adjacent two coiled layers are arranged in a staggered manner.

[0012] A further improvement of the infrared metal honeycomb body of the present invention lies in that the number of the metal strips is one, and the protrusions are arranged at intervals on the metal strip.

[0013] A further improvement of the infrared metal honeycomb body of the present invention lies in that the number of the metal strips is at least two; each metal strip is provided with protrusions; when multiple metal strips are stacked, the protrusions on any adjacent two metal strips are arranged in a staggered manner; the infrared metal honeycomb body is formed by coiling multiple stacked metal strips.

[0014] A further improvement of the infrared metal honeycomb body of the present invention lies in that among any adjacent two metal strips, at least n rows of protrusions are arranged at intervals on one of the metal strips, and at least n + 1 rows of protrusions are arranged at intervals on the second metal strip, where n is a positive integer not less than 1.

[0015] A further improvement of the infrared metal honeycomb body of the present invention lies in that the protrusions are hollow protrusions, and the hollow parts of the hollow protrusions are all communicated with the honeycomb holes.

[0016] The infrared metal burner of the present invention includes a burner body and the above-mentioned infrared metal honeycomb body; the infrared metal honeycomb body is located inside the burner body.

[0017] Compared with the prior art, the beneficial effects of the present invention by adopting the above scheme are as follows:

[0018] Because each blocking component is connected to each coiled layer and can also block the thermal radiation from the direction of the honeycomb hole air outlet, the internal temperature of the burner can be reduced, and the probability of flashback can be reduced.

[0019] Also because each blocking component is provided with ventilation holes, the ventilation holes are communicated with the honeycomb holes for delivering gas to the honeycomb holes; and in the air inlet direction, the cross-sectional area of the ventilation holes is smaller than the cross-sectional area of the honeycomb holes, so the flow rate of the mixed gas passing through the ventilation holes will increase, thereby enabling the mixed gas to flow rapidly in the honeycomb holes, effectively reducing the probability of flashback, solving the problem that the existing infrared metal honeycomb body has a relatively high probability of flashback, and improving safety.

[0020] The infrared metal burner of the present invention can at least effectively solve the problem of a relatively high probability of flashback. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a top view structural schematic diagram of an infrared metal honeycomb body provided by an embodiment of the present invention;

[0022] Figure 2 It is a schematic structural diagram of four metal strips of an infrared metal honeycomb body provided by an embodiment of the present invention. The arrows in the figure represent the flow direction of the mixed gas;

[0023] Figure 3 is Figure 2 a right view schematic diagram of the structure shown. The arrows in the figure represent the flow direction of the mixed gas;

[0024] Figure 4 is Figure 2 an enlarged view of part A in

[0025] In the figure: 1, metal strip; 2, honeycomb holes; 3, blocking component; 11, protrusion; 31, ventilation holes. Detailed implementation manners

[0026] In order to be able to more clearly understand the above-mentioned objects, features, and advantages of the present invention, the present invention will be further described in detail below in conjunction with the drawings and specific implementation manners. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0027] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention can also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited by the specific embodiments disclosed below.

[0028] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "front", "rear", "left", "right", "axial direction", "radial direction", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0029] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. The meaning of "plurality" is two or more, unless otherwise specifically defined.

[0030] In the present invention, unless otherwise clearly defined and limited, terms such as "installation", "connection", "linkage", "fixation", etc. shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] Embodiment 1

[0032] This embodiment provides an infrared metal honeycomb body, which is an annular layered structure formed by coiling a metal strip 1. Honeycomb holes 2 for gas flow are formed between adjacent two coiled circles, as Figure 1 shown. When this infrared metal honeycomb body is used in an infrared metal burner, the mixed gas of fuel gas and air enters from the air inlet of the honeycomb holes 2 and flows axially upward along the honeycomb holes 2. The mixed gas is ignited and burned in the honeycomb holes 2. Because the flow rate of the mixed gas is slow, there is a risk of flashback; moreover, the heat reflected by the bottom of the pot will enter the burner through the honeycomb holes 2, thereby increasing the internal temperature of the burner and the probability of flashback, posing a safety hazard.

[0033] To solve the above problems, the infrared metal honeycomb body of this embodiment further includes a plurality of blocking components 3, and each blocking component 3 is provided with a ventilation hole 31; each blocking component 3 is connected to each coiled circle for blocking the thermal radiation from the direction of the air outlet of the honeycomb holes 2; the ventilation hole 31 is communicated with the honeycomb holes 2 for delivering gas to the honeycomb holes 2; in the intake direction, the cross-sectional area of the ventilation hole 31 is smaller than the cross-sectional area of the honeycomb holes 2.

[0034] Because each blocking component 3 is connected to each coiled circle and can also block the thermal radiation from the direction of the air outlet of the honeycomb holes 2, the internal temperature of the burner can be reduced and the probability of flashback can be reduced.

[0035] Also because each blocking component 3 is provided with a ventilation hole 31, the ventilation hole 31 is communicated with the honeycomb holes 2 for delivering gas to the honeycomb holes 2; and in the intake direction, the cross-sectional area of the ventilation hole 31 is smaller than the cross-sectional area of the honeycomb holes 2, so the flow rate of the mixed gas passing through the ventilation hole 31 will increase, thereby enabling the mixed gas to flow rapidly in the honeycomb holes 2, effectively reducing the probability of flashback, solving the problem of relatively large probability of flashback existing in the current infrared metal honeycomb body, and improving safety.

[0036] Preferably, the number of the ventilation holes 31 is multiple, and the multiple ventilation holes 31 are uniformly arranged on the blocking component 3 for increasing the gas flow rate and delivering the gas to the honeycomb holes 2.

[0037] Further, the blocking component 3 is arranged at the air inlet of the honeycomb holes 2, aiming to increase the flow rate of the mixed gas when it enters the honeycomb holes 2, and further reduce the probability of flashback.

[0038] Further, the blocking component 3 includes a reflecting part; the reflecting surface of the reflecting part faces the air outlet direction of the honeycomb holes 2 for reflecting the thermal radiation from the air outlet direction of the honeycomb holes 2; the reflecting part can reflect the heat from the air outlet of the honeycomb holes 2 back to the air outlet, thereby effectively blocking part of the heat from entering the burner and reducing the temperature inside the burner; the heat emitted by the reflecting part will heat the bottom of the pot again, so the utilization rate of heat is improved.

[0039] Preferably, the material of the reflecting part is metal, such as foil.

[0040] Further, an air flow gap for gas flow is formed between the blocking component 3 and the adjacent coiled ring, aiming to reduce the radial dimension of the honeycomb holes 2 and increase the flow rate of the mixed gas.

[0041] In a specific embodiment, preferably, the blocking component 3 is hermetically connected to the adjacent coiled ring to ensure that the mixed gas flows into the honeycomb holes 2 after accelerating through the ventilation holes 31, because the accelerating effect of the ventilation holes 31 is more obvious than that of the air flow gap.

[0042] Further, since the infrared metal honeycomb body in this embodiment is an annular layered structure formed by coiling the metal strip 1, in order to reduce the production cost and further improve the production efficiency, the edges of each coiled ring adjacent to the air inlet of the honeycomb holes 2 are sequentially turned over towards the adjacent coiled ring to form the blocking component 3.

[0043] At this time, the blocking component 3 is located at the air inlet of the honeycomb holes 2, and since the blocking component 3 is formed by turning over the metal strip 1, additional components are avoided in the infrared metal honeycomb body, thereby reducing the production cost. Also because the blocking component 3 is made of metal, the blocking component 3 itself has the function of reflecting heat at this time, which can reflect the heat from the bottom of the pot back to the bottom of the pot, reduce the temperature inside the burner, and reduce the probability of flashback. At the same time, the ventilation holes 31 on the blocking component 3 can ensure that the mixed gas can enter the honeycomb holes 2 smoothly and quickly.

[0044] In the specific production process, the metal strip 1 needs to be turned over along the length direction first, and then the turned-over metal strip 1 is coiled to form an annular layered structure to obtain the infrared metal honeycomb body.

[0045] Preferably, the included angle between the blocking component 3 and the metal strip 1 is 90°, as Figure 4 shown, so that it has a good reflection effect on the heat from the air outlet of the honeycomb holes 2.

[0046] "Sequential" means that the edges of all the coiled loops are flanged towards the central axis of the infrared metal honeycomb body, or the edges of all the coiled loops are flanged away from the central axis of the infrared metal honeycomb body. On the one hand, the purpose is for aesthetics, and on the other hand, it is to ensure that the air inlet of each honeycomb hole 2 is minimized as much as possible. Preferably, the air inlet of each honeycomb hole 2 is closed so that the mixed gas can only enter the honeycomb hole 2 through the ventilation hole 31.

[0047] Furthermore, in order to increase the stability of the honeycomb holes 2, protrusions 11 are provided on each layer of coiled loops, and the protrusions 11 of adjacent two layers of coiled loops are arranged in a staggered manner.

[0048] Preferably, in order to increase the porosity of the infrared metal honeycomb body to improve the ventilation efficiency, the protrusions 11 are hollow protrusions, and the hollow parts of the hollow protrusions are all communicated with the honeycomb holes 2, as Figure 4 shown.

[0049] The meaning of "the hollow parts of the hollow protrusions are all communicated with the honeycomb holes 2" is that the hollow parts of the hollow protrusions are communicated with the honeycomb holes 2 where the hollow protrusions are located, and are also communicated with the adjacent honeycomb holes 2.

[0050] Preferably, the protrusions 11 are in the shape of a column, a triangular column, or a semi-cylindrical body, which can increase the contact area between the protrusions 11 and the metal strip 1, thereby increasing the stability of the honeycomb holes 2.

[0051] Furthermore, there is one metal strip 1, and the metal strip 1 is provided with protrusions 11 at intervals. When the annular layered structure formed by coiling this metal strip 1, the protrusions 11 on the coiled loops of adjacent two layers are arranged in a staggered manner.

[0052] Furthermore, there are at least two metal strips 1, and each metal strip 1 is provided with protrusions 11; when multiple metal strips 1 are stacked, the protrusions 11 on any two adjacent metal strips 1 are arranged in a staggered manner; the infrared metal honeycomb body is formed by coiling multiple stacked metal strips 1.

[0053] Preferably, among any two adjacent metal strips 1, one of the metal strips is provided with at least n rows of protrusions 11 at intervals, and the second metal strip is provided with at least n + 1 rows of protrusions 11 at intervals, where n is a positive integer not less than 1.

[0054] Preferably, the rows of protrusions 11 on each metal strip 1 are arranged parallel to each other, as Figure 2 shown.

[0055] For example, as Figures 2 - 4As shown, there are four metal strips 1. On the first metal strip, three rows of protrusions 11 are arranged at intervals, and these three rows of protrusions 11 are parallel to each other; on the second metal strip, two rows of protrusions 11 are arranged at intervals, and these two rows of protrusions 11 are parallel to each other; on the third metal strip, three rows of protrusions 11 are arranged at intervals, and these three rows of protrusions 11 are parallel to each other; on the fourth metal strip, two rows of protrusions 11 are arranged at intervals, and these two rows of protrusions 11 are parallel to each other. When these four metal strips are stacked together, the protrusions 11 on the four metal strips are arranged in a staggered manner;

[0056] Then, the annular layered structure formed by coiling the above-stacked four metal strips 1 is obtained to get the infrared metal honeycomb body of this embodiment.

[0057] Embodiment 2

[0058] This embodiment provides an infrared metal burner, which includes a burner body and the infrared metal honeycomb body of Embodiment 1; the infrared metal honeycomb body is located inside the burner body.

[0059] Since the infrared metal burner of this embodiment uses an infrared metal honeycomb body of Embodiment 1, the infrared metal burner of this embodiment can at least reduce the probability of flashback.

[0060] In the description of this specification, the descriptions of terms such as "one embodiment", "some embodiments", "specific embodiments", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described general features, structures, materials or characteristics can be combined in a suitable manner in any one or more embodiments or examples.

[0061] As described above, only the preferred specific embodiments of the present invention are given, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. An infrared metal honeycomb body, which is an annular layered structure formed by coiling a metal strip (1). Honeycomb holes (2) for gas flow are formed between adjacent coiled layers. It is characterized in that it further includes a plurality of blocking components (3), and each blocking component (3) is provided with a ventilation hole (31); each blocking component (3) is connected to each coiled layer to block thermal radiation from the outlet direction of the honeycomb hole (2); the ventilation hole (31) is communicated with the honeycomb hole (2) to convey gas to the honeycomb hole (2); in the intake direction, the cross-sectional area of the ventilation hole (31) is smaller than the cross-sectional area of the honeycomb hole (2). The edge of each coiled layer adjacent to the intake port of the honeycomb hole (2) is sequentially turned over towards the adjacent coiled layer to form the blocking component (3). The included angle between the blocking component (3) and the metal strip (1) is 90°.

2. The infrared metal honeycomb body according to claim 1, It is characterized in that the blocking component (3) is arranged at the intake port of the honeycomb hole (2).

3. The infrared metal honeycomb body according to claim 1, It is characterized in that the blocking component (3) includes a reflection part; the reflection surface of the reflection part faces the outlet direction of the honeycomb hole (2) to reflect thermal radiation from the outlet direction of the honeycomb hole (2).

4. The infrared metal honeycomb body according to claim 1, It is characterized in that an air flow gap for gas flow is further formed between the blocking component (3) and the adjacent coiled layer.

5. The infrared metal honeycomb body according to claim 4, It is characterized in that each coiled layer is provided with a protrusion (11), and the protrusions (11) of adjacent coiled layers are arranged in a staggered manner.

6. The infrared metal honeycomb body according to claim 5, It is characterized in that the number of the metal strips (1) is one, and the protrusions (11) are arranged at intervals on the metal strip (1).

7. The infrared metal honeycomb body according to claim 5, It is characterized in that the number of the metal strips (1) is at least two; each metal strip (1) is provided with a protrusion (11); when multiple metal strips (1) are stacked, the protrusions (11) on any two adjacent metal strips (1) are arranged in a staggered manner; the infrared metal honeycomb body is formed by coiling multiple stacked metal strips (1).

8. The infrared metal honeycomb body according to claim 7, It is characterized in that in any two adjacent metal strips (1), at least n rows of protrusions (11) are arranged at intervals on one of the metal strips (1), and at least n + 1 rows of protrusions (11) are arranged at intervals on the other metal strip (1), where n is a positive integer not less than 1.

9. The infrared metal honeycomb body according to claim 5, It is characterized in that the protrusion (11) is a hollow protrusion, and the hollow part of the hollow protrusion is communicated with the honeycomb hole (2).

10. An infrared metal burner, It is characterized in that It includes a burner body and the infrared metal honeycomb body according to any one of claims 1-9; the infrared metal honeycomb body is located within the burner body.

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