A honeycomb heating element for use in a burner and a burner

Abstract

This utility model relates to the field of gas appliance technology, specifically providing a honeycomb heating element and a burner for use in a burner. The honeycomb heating element includes a honeycomb heating element body and a first flow restrictor. The first flow restrictor includes a first flow restricting part and a second flow restricting part, which cooperate to form a groove-shaped structure. The honeycomb heating element body is embedded in the groove-shaped structure. The first flow restricting part is attached to the bottom of the honeycomb heating element body; the second flow restricting part is attached to the side surface of the honeycomb heating element body to form a tight, filling fit with the inner wall of the outer ring of the burner cavity when the honeycomb heating element body is installed in the burner cavity. This utility model improves the sealing performance of the honeycomb heating element when installed in the burner cavity, preventing gas flow from flowing out from the junction of the honeycomb heating element and the burner cavity, improving the stability of gas combustion, and avoiding backfire.

Description

Technical Field

[0001] This utility model relates to the field of gas appliance technology, specifically to a honeycomb heating element used in a burner and a burner. Background Technology

[0002] The honeycomb heating element is a core component of an infrared burner. The honeycomb heating element provides a platform for the combustion of gas through its tens of thousands of honeycomb-shaped pores, and can achieve temperature rise under the action of gas combustion, thereby emitting infrared heat energy to heat the cookware.

[0003] However, when the existing honeycomb heating element is installed in the cavity of the infrared burner, the large gap at the joint between the honeycomb heating element and the cavity causes the gas to flow out from the joint, resulting in poor combustion stability of the gas on the surface of the honeycomb heating element. Utility Model Content

[0004] This utility model provides a honeycomb heating element and a burner for use in a burner. The honeycomb heating element, through the setting of a first flow-limiting element, improves the sealing performance between itself and the burner cavity, effectively controlling the flow of gas from the junction of the honeycomb heating element and the burner cavity, improving combustion stability, and preventing backfire. The specific technical solution is as follows:

[0005] A first aspect of this utility model is to provide a honeycomb heating element for use in a burner, comprising: a honeycomb heating element body and a first current limiting element;

[0006] The first current limiting component includes a first current limiting part and a second current limiting part. The first current limiting part and the second current limiting part cooperate to form a groove-shaped structure, and the honeycomb heating element body is embedded in the groove-shaped structure.

[0007] The first flow-limiting part is attached to the bottom of the honeycomb heating element body; the second flow-limiting part is attached to the side surface of the honeycomb heating element body, so as to form a tight fit with the inner wall of the outer ring of the burner cavity when the honeycomb heating element body is installed into the cavity of the burner, thereby preventing the gas flow from flowing out from the junction of the honeycomb heating element body and the burner cavity.

[0008] In one specific embodiment, the first flow-limiting part is attached to the bottom of the honeycomb heating element body; the second flow-limiting part is attached to the side surface of the honeycomb heating element body, so as to form a tight fit with the inner wall of the outer ring of the burner cavity and / or the outer wall of the central channel of the burner when the honeycomb heating element body is installed into the cavity of the burner, thereby preventing the gas flow from flowing out from the junction of the honeycomb heating element body and the burner cavity.

[0009] In one specific embodiment, the edge of the first current limiting part extends to the side facade of the honeycomb heating element body to form a groove structure, or connects with the end face of the bottom of the second current limiting part to form a groove structure;

[0010] The first current limiting part has a through hole in the middle region that communicates with the main body of the honeycomb heating element, and / or the first current limiting part has a notch for passing through the central channel.

[0011] In one specific embodiment, the honeycomb heating element further includes a second current limiting member, which is disposed between the top of the honeycomb heating element body, and / or the interior of the honeycomb heating element body, and / or the bottom of the honeycomb heating element body and the first current limiting part.

[0012] In one specific embodiment, the honeycomb heating element body includes a plurality of sub-heating elements stacked along the concave direction of the groove structure, and a second current limiting element is provided between adjacent sub-heating elements.

[0013] In one specific embodiment, a sealing ring is provided on the side surface of the honeycomb heating element body and / or cavity, and the sealing ring is sealed and fitted to the second current limiting part and / or cavity and is away from the side of the honeycomb heating element body;

[0014] The end of the sealing ring has a snap-fit ​​portion, which snaps onto the outside of the honeycomb heating element body and / or the first current limiting element and / or the cavity.

[0015] In one specific embodiment, the honeycomb heating element body includes at least one corrugated strip unit with a plurality of air vents; multiple corrugated strip units are stacked together, or the corrugated strip units are wound together.

[0016] The corrugated strip unit includes a first component and a second component that are stacked together, and the first component and the second component cooperate to form the air outlet.

[0017] The adjacent corrugated belt units, as well as the first and second components within the same corrugated belt unit, are all integrated through welding, riveting, or fastening processes.

[0018] In one specific embodiment, both the first component and the second component include a plurality of waveform units, wherein the waveform units include arc segments and / or straight segments and / or stretchable units.

[0019] In one specific embodiment, the waveform unit includes one or more of the following: corrugated waveform unit, semi-circular waveform unit, polygonal waveform unit, triangular waveform unit, and sawtooth waveform unit;

[0020] The first component and / or the second component further include a reinforcing unit connected to the waveform unit, wherein the reinforcing unit is provided with one or more of the following: protrusions, concave points, and local deformation segments.

[0021] In one specific embodiment, the crest height of the first component is 8 to 12 times the crest height of the second component, and the trough height of the first component is 8 to 12 times the trough height of the second component.

[0022] The height of the honeycomb heating element body in the concave direction of the groove structure is the axial height of the honeycomb heating element body, and the axial height h of the honeycomb heating element body is ≤50mm;

[0023] And / or, the opening ratio of the air outlet on the preset cross section is between 60% and 90%, and the preset cross section is the cross section of the honeycomb heating element body in the radial direction of the air outlet.

[0024] A second aspect of this utility model is to provide a burner, including a honeycomb heating element used in a burner as described in any of the above embodiments, as well as a gas mixing device and a reinforcing component;

[0025] The reinforcing member is fastened to the top and bottom of the honeycomb heating element body, the inner sidewall of the reinforcing member is tightly attached to the second flow limiting part, and the connecting part at the bottom of the reinforcing member is connected to the gas mixing device to form a gas channel.

[0026] The reinforcement has an inner fixing part and an outer fixing part. The inner fixing part extends toward the center of the honeycomb heating element body to limit the inner ring of the honeycomb heating element body radially and / or axially. The outer fixing part extends toward the outer side of the honeycomb heating element body to limit the outer ring of the honeycomb heating element body radially and / or axially.

[0027] The reinforcing member is provided with one or more radially arranged reinforcing ribs; the two ends of the reinforcing ribs are respectively connected to the inner fixing part and the outer fixing part, and / or the reinforcing ribs are connected to the top and / or bottom of the honeycomb heating element body;

[0028] The outer periphery of the reinforcement is provided with a flow guiding structure.

[0029] In one specific embodiment, a guide partition is provided at the bottom of the honeycomb heating element body. The guide partition is used to create a ring-shaped interval between the reinforcement and the honeycomb heating element body, so that the interval area forms one or more independent annular gas spaces.

[0030] This utility model has at least the following beneficial effects:

[0031] This utility model provides a honeycomb heating element and burner for use in a gas stove. The honeycomb heating element has a first flow limiting member forming a groove structure, and the main body of the honeycomb heating element is embedded in the groove structure. The second flow limiting part of the first flow limiting member is attached to the side surface of the main body of the honeycomb heating element. When the first flow limiting member is installed in the cavity of the burner along with the main body of the honeycomb heating element, the second flow limiting part forms a tight fit with the inner wall of the cavity of the outer ring of the burner and / or the outer wall of the central channel of the burner. This removes the irregular gaps at the junction of the side surface of the honeycomb heating element and the burner, thereby effectively preventing the gas flow from flowing out from the junction of the main body of the honeycomb heating element and the burner cavity. This allows the gas to burn stably in the main body of the honeycomb heating element and avoids backfire.

[0032] The burner provided by this utility model, by tightly fitting the inner wall of the reinforcing member to the second flow-limiting part, fills and seals the gap between the honeycomb heating element body and the reinforcing member with the second flow-limiting part, thereby effectively limiting the leakage of gas from the gap between the honeycomb heating element body and the reinforcing member. The gas can burn stably in the honeycomb heating element body, avoiding the occurrence of backfire. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 This is a schematic diagram of the structure of the honeycomb heating element provided in this embodiment;

[0035] Figure 2 A schematic diagram of a structure with a second current-limiting element on the top of the main body of the honeycomb heating element;

[0036] Figure 3 A schematic diagram showing a structure with a second current-limiting element inside and at the bottom of the honeycomb heating element body;

[0037] Figure 4 This is a schematic diagram of the structure in this embodiment where the sealing ring is located on the side elevation of the heating element body;

[0038] Figure 5 This is a schematic diagram of the structure in this embodiment where the sealing ring is located on the side elevation of the cavity;

[0039] Figure 6 This is a schematic diagram of the structure of multiple corrugated strip units stacked together in this embodiment;

[0040] Figure 7This is a schematic diagram of the structure of the corrugated belt unit winding in this embodiment;

[0041] Figure 8 This is a schematic diagram of various optional structures for the waveform unit in this embodiment;

[0042] Figure 9 This is a schematic diagram of the reinforcing unit in this embodiment;

[0043] Figure 10 This is a schematic diagram of the overall structure of the burner provided in this embodiment;

[0044] Figure 11 This is a top view of the burner provided in this embodiment;

[0045] Figure 12 for Figure 11 A schematic diagram of the cross-section of the burner on AA;

[0046] Figure 13 for Figure 11 A schematic diagram of the cross-section of the burner on the BB;

[0047] Figure 14 This is an exploded view of the overall structure of the split-type burner provided in this embodiment;

[0048] Figure 15 This is a cross-sectional schematic diagram of the overall structure of the integral burner provided in this embodiment.

[0049] Figure label:

[0050] 1-Honeycomb heating element main body; 11-Sub-heating element; 12-Corrugated strip unit; 13-Central through hole; 121-First component; 122-Second component; 2-First flow restrictor; 21-First flow restrictor; 211-Through hole; 212-Notch; 22-Second flow restrictor; 3-Second flow restrictor; 4-Sealing ring; 41-Snap-fit ​​part; 5-Gas outlet; 6-Waveform unit; 7-Reinforcing unit; 71-Protrusion; 72-Diagonal waveform segment; 8-Gas mixing device; 81-Connecting cavity; 82-Gas mixing cavity; 83-Ejector tube; 9-Reinforcing part; 91-Inner fixing part; 92-Outer fixing part; 93-Reinforcing rib; 94-Flow guiding structure; 95-Connecting part; 10-Burner; 101-Cavity; 102-Central channel; 14-Gas channel; 15-Guide separator; 16-Annular gas space. Detailed Implementation

[0051] Various embodiments of the present invention will be described more fully below. The present invention may have various embodiments, and adjustments and changes may be made therein. However, it should be understood that there is no intention to limit the various embodiments of the present invention to the specific embodiments disclosed herein, but rather the present invention should be understood to cover all adjustments, equivalents, and / or alternatives falling within the spirit and scope of the various embodiments of the present invention.

[0052] In the following, the terms “comprising” or “may include”, which may be used in various embodiments of the present invention, indicate the presence of the disclosed functions, operations, or elements, and do not limit the addition of one or more functions, operations, or elements. Furthermore, as used in various embodiments of the present invention, the terms “comprising,” “having,” and their cognates are intended only to indicate a specific feature, number, step, operation, element, component, or combination of the foregoing, and should not be construed as primarily excluding the presence of one or more other features, numbers, steps, operations, elements, components, or combinations of the foregoing, or the possibility of adding one or more combinations of features, numbers, steps, operations, elements, components, or combinations of the foregoing.

[0053] In various embodiments of this utility model, the expression "or" or "at least one of A and / or B" includes any combination or all combinations of the words listed simultaneously. For example, the expression "A or B" or "at least one of A and / or B" may include A, may include B, or may include both A and B.

[0054] The terms used in the various embodiments of this utility model (such as "first," "second," etc.) may modify various constituent elements in the various embodiments, but do not limit the corresponding constituent elements. For example, the above terms do not limit the order and / or importance of the elements. The above terms are only used for the purpose of distinguishing one element from other elements. For example, a first user device and a second user device refer to different user devices, although both are user devices. For example, without departing from the scope of the various embodiments of this utility model, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element.

[0055] It should be noted that, in this utility model, unless otherwise explicitly specified and defined, terms such as "installation," "connection," and "fixation" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0056] Please refer to Figures 1 to 9An embodiment of this utility model provides a honeycomb heating element for use in a burner, comprising: a honeycomb heating element body 1 and a first current limiting element 2.

[0057] The first current limiting element 2 includes a first current limiting part 21 and a second current limiting part 22. The first current limiting part 21 and the second current limiting part 22 cooperate to form a groove-shaped structure, and the honeycomb heating element body 1 is embedded in the groove-shaped structure.

[0058] Among them, reference Figure 4 and Figure 5 The first flow-limiting part 21 is attached to the bottom of the honeycomb heating element body 1; the second flow-limiting part 22 is attached to the side surface of the honeycomb heating element body 1, so as to form a tight fit with the inner wall of the outer ring of the burner cavity 101 and / or the outer wall of the central channel 102 of the burner when the honeycomb heating element body 1 is installed into the cavity 101 of the burner 10, thereby preventing the gas flow from flowing out from the junction of the honeycomb heating element body 1 and the cavity 101 of the burner 10, and ensuring that the gas can burn stably on the surface of the honeycomb heating element body 1.

[0059] In a preferred embodiment, both the first current limiting part 21 and the second current limiting part 22 are made of a metal material that is soft, elastic and heat-resistant. The metal material includes, but is not limited to, nickel-based high-temperature alloys, titanium alloys, copper alloys, aluminum alloys and chromium alloys.

[0060] In some traditional processes, high-temperature adhesive bonding and interference fit can be used to seal the honeycomb heating element and the burner cavity. However, the high-temperature adhesive bonding process is prone to failure and detachment under long-term thermal expansion and contraction and high temperature environment. The interference fit will deform the honeycomb heating element embedded in the burner cavity under thermal force. Once the high-temperature adhesive falls off or the honeycomb heating element is deformed, gas will flow out from the joint. At the same time, it will change the combustion conditions of the gas stove, causing the stove to fail to burn normally and causing backfire. Once backfire occurs in the gas stove during combustion, it will cause major safety hazards and accidents.

[0061] In this embodiment, the flexibility and elasticity of the first flow limiting part 21 and the second flow limiting part 22 are used to compensate for the thermal stress at the junction of the honeycomb heating element body 1 and the burner cavity. This achieves a tight fit between the honeycomb heating element body 1 and the burner cavity, while the flexibility and elasticity of the second flow limiting part 22 prevents large extrusion pressure caused by thermal deformation between the cavity and the honeycomb heating element body 1. This effectively prevents the gas from flowing out from the junction between the honeycomb heating element body 1 and the burner cavity, solving the technical problems of unstable combustion, easy backfire, and poor reliability in traditional processes. Therefore, the honeycomb heating element used in the burner provided in this embodiment forms a groove-shaped structure with the first flow restrictor 2. The honeycomb heating element body 1 is embedded in this groove-shaped structure, and the second flow restrictor 22 of the first flow restrictor 2 is attached to the side surface of the honeycomb heating element body 1. When the first flow restrictor 2 is installed in the cavity 101 of the burner 10 along with the honeycomb heating element body 1, its second flow restrictor 22 forms a tight fit with the inner wall of the outer ring of the burner cavity 101, and / or forms a tight fit with the outer wall of the central channel 102 of the burner, thereby... The irregular gaps between the side facade of the honeycomb heating element body 1 and the inner wall of the outer ring of the cavity 101 and / or the outer wall of the central channel 102 of the burner are removed. The relaxation tension formed by the material properties of the second flow restrictor 22 is used as compensation for thermal stress. This ensures that the gas flow is effectively prevented from flowing out from the junction of the honeycomb heating element body 1 and the burner cavity 101 within the filling space. It also prevents the honeycomb heating element body 1 from being deformed due to compression, so that the gas can burn stably in the honeycomb heating element body 1 and avoids backfire.

[0062] Alternatively, a groove-shaped structure can be formed by extending the edge of the first current-limiting part 21 to the side facade of the honeycomb heating element body 1, or by connecting the end face of the bottom of the first current-limiting part 21 and the second current-limiting part 22.

[0063] Preferably, please refer to Figure 1 The first flow-limiting section 21 has a through hole 211 in its central region, which communicates with the honeycomb heating element body 1. The through hole 211 allows the gas to flow more easily into the honeycomb heating element body 1, reducing the resistance encountered during its flow and thus improving gas delivery efficiency. This ensures sufficient gas supply in the honeycomb heating element body 1, facilitating high-power combustion and improving combustion completeness. The remaining parts of the first flow-limiting section 21 form a tight fit with the inner wall of the burner cavity, limiting gas leakage into the gap between the bottom side of the honeycomb heating element body 1 and the bottom side wall of the burner cavity, further restricting gas leakage and ensuring stable combustion within the honeycomb heating element body 1.

[0064] In some specific embodiments, please refer to Figure 1 The first flow-limiting part 21 may also have a notch 212 for the central channel of the burner to pass through, and the honeycomb heating element body 1 has a central through hole 13 corresponding to the notch 212 and the central channel of the burner. During actual assembly, refer to... Figure 5 The central channel 102 of the burner passes through the notch 212 and the central through hole 13 of the honeycomb heating element body 1, thereby achieving the initial fixation and positioning of the honeycomb heating element body 1.

[0065] In some cases, the honeycomb heating element body 1 can be further fixed and limited by clamping from the upper and lower sides and / or two end faces of the limiting structure (see reinforcement 9 below).

[0066] In one specific embodiment, please refer to Figure 2 and Figure 3 It also includes a second current limiting element 3, which can be disposed at the top of the honeycomb heating element body 1, and / or inside the honeycomb heating element body 1, and / or between the bottom of the honeycomb heating element body 1 and the first current limiting part 21.

[0067] Optionally, the flow limiting function of the first flow limiting element 2 and the second flow limiting element 3 can be adaptively set according to the combustion speed of different gas sources (gas).

[0068] Preferably, the current limiting effect of the second current limiting element 3 is less than that of the first current limiting element 2.

[0069] For example, the second flow restrictor 3 may include a mesh, fiber, or porous body made of a high-temperature resistant, flexible, and elastic metal material, so that the second flow restrictor 3 can facilitate the passage of high-burning gas while effectively reducing the flow velocity of the gas, thereby ensuring good stability of the gas after entering the honeycomb heating element body 1, avoiding excessively high gas flow velocity and unstable combustion, and further preventing the occurrence of backfire.

[0070] For example, please refer to again Figure 3 The honeycomb heating element body 1 may include multiple sub-heating elements 11 stacked along the concave direction y of the groove structure, with a second current limiting element 3 disposed between adjacent sub-heating elements 11. The second current limiting element 3 is disposed on the bottom end face of the lowermost sub-heating element 11 and / or the top end face of the uppermost sub-heating element 11. Only the second current limiting element 3 located on the bottom end face of the lowermost sub-heating element 11 is shown in the figure.

[0071] To accommodate high-pressure, high-speed combustion, in this embodiment, the honeycomb heating element body 1 is divided into multiple sub-heating elements 11. This not only facilitates the replacement of individual sub-heating elements 11 and the combination of different sub-heating elements 11, but also allows for adaptation to different gas pressures, meeting combustion requirements and enhancing the burner's adaptability and flexibility. Furthermore, a second flow restrictor 3 is installed between adjacent sub-heating elements 11 to limit the gas flow within the multiple sub-heating elements 11, improving the uniformity and stability of gas distribution within them, thereby ensuring sufficient and stable combustion.

[0072] In one specific embodiment, please refer to Figure 4 and Figure 5 A sealing ring 4 is provided on the side surface of the honeycomb heating element body 1 and / or the burner cavity 101. The sealing ring 4 is sealed and fitted to the second flow limiting part 22 and / or the cavity 101 and is away from the side of the honeycomb heating element body 1.

[0073] Preferably, the end of the sealing ring 4 has a snap-fit ​​portion 41, which snaps onto the outside of the honeycomb heating element body 1 and / or the first current limiting element 2 and / or the cavity 101.

[0074] Please refer to Figure 4 When the sealing ring 4 is installed on the side facade of the honeycomb heating element body 1, the sealing ring 4 fits against the second flow-limiting part 22, and both the upper and lower ends of the sealing ring 4 have a snap-fit ​​part 41. The snap-fit ​​part 41 at the upper end snaps onto the top of the honeycomb heating element body 1 from top to bottom, and the snap-fit ​​part 41 at the lower end snaps onto the first flow-limiting part 21 of the first flow-limiting member 2 and the honeycomb heating element body 1 from bottom to top. This makes it easier to install the honeycomb heating element body 1 into the burner cavity, and the sealing ring 4 can also effectively seal the side facade of the honeycomb heating element body 1 with the inner wall of the cavity and / or the outer wall of the central channel, preventing the gas flow from overflowing.

[0075] Please refer to Figure 5 When the sealing ring 4 is installed on the side of the cavity 101, the sealing ring 4 is attached to the side of the cavity 101 away from the honeycomb heating element body 1. Both the upper and lower ends of the sealing ring 4 have a latching portion 41. The latching portion 41 at the upper end latches onto the top of the honeycomb heating element body 1 from top to bottom, and the latching portion 41 at the lower end latches onto the outer wall of the cavity 101. Therefore, on the one hand, the sealing ring 4 can prevent the gas flow from escaping by attaching to the side of the cavity 101; on the other hand, the sealing ring 4 can improve the stability of the honeycomb heating element body 1 when installed in the cavity 101 by respectively latching onto the outer wall of the cavity 101.

[0076] When a second current limiting element 3 is provided on the top of the honeycomb heating element body 1, the snap-fit ​​part 41 at the upper end of the sealing ring 4 can also snap the second current limiting element 3 onto the top of the honeycomb heating element body 1, thereby ensuring the installation stability of the second current limiting element 3.

[0077] In one specific embodiment, the honeycomb heating element body 1 includes at least one corrugated strip unit 12 having a plurality of air vents 5. Multiple corrugated strip units 12 are stacked together, or the corrugated strip units 12 are wound together. See also... Figure 6 and Figure 7 These are schematic diagrams showing multiple corrugated strip units 12 stacked together and corrugated strip units 12 wound together. The final shape of the honeycomb heating element body 1 is not specifically limited.

[0078] The corrugated strip unit 12 includes a first component 121 and a second component 122 that are stacked together, and the first component 121 and the second component 122 cooperate to form an air outlet 5;

[0079] Preferably, adjacent corrugated strip units 12 and the first component 121 and the second component 122 in the same corrugated strip unit 12 are formed into one piece by welding, riveting or fastening.

[0080] In some embodiments, please refer to Figure 8 Both the first component 121 and the second component 122 include several waveform units 6, and the waveform units 6 include arc segments and / or straight segments and / or stretchable units.

[0081] Optionally, waveform unit 6 may include Figure 8 The diagram shows various waveform units. Specifically, Figure 8 The following are shown from top to bottom: corrugated waveform units formed by connecting multiple arc segments, semi-circular waveform units, and polygonal waveform units, triangular waveform units, sawtooth waveform units, and trapezoidal waveform units formed by connecting multiple straight line segments.

[0082] It should be noted that, Figure 8 The image only shows various types of waveform units 6 of the first component 121. The structure of the waveform unit 6 of the second component 122 can be referenced to the waveform unit 6 of the first component 121, but the height of the peaks and valleys of the two differs by nearly 10 times.

[0083] Optionally, waveform unit 6 may include one or more of the types described above.

[0084] In this embodiment, the inclusion of waveform units 6 in the first component 121 and the second component 122 structurally enhances their resistance to thermal expansion and contraction. Understandably, by stacking the first component 121 and the second component 122, which include several waveform units 6, to form the vent 5, during combustion, the first component 121 and the second component 122 can utilize the expansion and contraction rate of the waveform units 6 to absorb the expansion and contraction of the material due to temperature changes. This reduces the impact of thermal stress on the area and shape of the vent 5, improves the structural stability of the vent 5 in a high-temperature combustion environment, and gives the honeycomb heating element body 1 excellent performance for long-term and high-power combustion.

[0085] In some cases, the waveform unit 6 may include a stretchable segment, which can be understood as a segment structure whose structure can change within a certain range with temperature variations, achieving stretching and deformation. The waveform unit 6 formed by the stretchable segment can improve the ability of the first component 121 and the second component 122 to resist thermal expansion based on the stretching and deformation of the stretchable segment. This embodiment does not limit the specific structure of the waveform unit 6 formed by the stretchable segment, which can be the corrugated waveform unit, semi-circular waveform unit, and polygonal waveform unit described above.

[0086] Preferably, please refer to Figure 9 The first component and / or the second component further include a reinforcing unit 7 connected to the waveform unit, the reinforcing unit 7 being provided with one or more of the following: protrusions 71, concave points, and local deformation segments.

[0087] Understandably, the protrusions 71, the concave points, and the locally deformed segments can enhance the toughness of the first and second components, thereby further improving the stability of the first and / or second components when heated and enhancing their ability to resist thermal expansion.

[0088] For example, the locally deformed segment could be, for instance, Figure 9 The diagonal waveform segment 72 is shown.

[0089] In some alternative embodiments, the crest height of the first component 121 is 8 to 12 times the crest height of the second component 122, and the trough height of the first component 121 is 8 to 12 times the trough height of the second component 122.

[0090] In this embodiment, since the peak and trough heights of the first component 121 and the second component 122 are not consistent, the peak and trough will not overlap and thus the air outlet 5 cannot be formed.

[0091] For example, the crest and trough height of the first component 121 can be 10 times the crest and trough height of the second component 122. For instance, the crest and trough height of the first component 121 is 0.5 mm, and the crest and trough height of the second component 122 is 0.05 mm.

[0092] In some alternative embodiments, please refer to Figure 1 The height of the honeycomb heating element body 1 in the concave direction y of the groove structure is the axial height of the honeycomb heating element body 1, and the axial height h of the honeycomb heating element body 1 is ≤50mm; more preferably, in order to enable the honeycomb heating element to meet the combustion conditions and reduce material costs, the axial height h of the honeycomb heating element body 1 in this embodiment is ≤10mm.

[0093] This embodiment reduces the axial length of the vent hole 5 by lowering the height of the honeycomb heating element body 1 in the concave direction y, thereby reducing the resistance to the axial flow of gas in the vent hole 5 and increasing the thermal intensity per vent hole 5 during gas combustion.

[0094] Furthermore, in this embodiment, the opening ratio of the vent 5 on the preset cross-section is between 60% and 90%, and the preset cross-section is the cross-section of the honeycomb heating element body 1 in the radial direction of the vent 5. This preset cross-section can be referenced... Figure 6 The end face of the honeycomb heating element body 1 is shown from a top view. It should be noted that the porosity indicates the percentage of the total area of ​​the pores 5 to the cross-sectional area.

[0095] Preferably, the opening ratio of the air outlet 5 on the preset cross section is between 70% and 90%.

[0096] Please refer to Figures 10 to 15 The present invention also provides a burner, including the honeycomb heating element described in any of the above embodiments, as well as a gas mixing device 8 and a reinforcing component 9.

[0097] The reinforcing member 9 is fastened to the top and bottom of the honeycomb heating element body 1, thereby forming a cavity 101 for accommodating the honeycomb heating element body 1. The inner sidewall of the reinforcing member 9 is tightly fitted to the second flow-limiting part 22; Figure 12 As shown, the connecting part 95 at the bottom of the reinforcement 9 is connected to the gas mixing device 8. The honeycomb heating element body 1 and the inner bottom wall of the reinforcement 9 are set with a certain distance to form a gas distribution space (the gas distribution space can refer to the annular gas space 16 described below). The gas can enter the honeycomb heating element body 1 through the gas distribution space to achieve stable combustion.

[0098] Specifically, please refer to Figure 13The center of the reinforcement 9 is provided with a central channel for connecting the gas mixing device 8 or specifically connecting the gas mixing device 8 (the connecting cavity 81 will be described in detail below). The inner wall of the central channel of the reinforcement 9 is tightly attached to the side surface of the second flow limiting part 22. At the same time, the outer surface of the bottom central channel of the reinforcement 9 is connected to the gas mixing device 8 or specifically connected to the connecting cavity 81 of the gas mixing device 8. The connection relationship between them constitutes the central channel 102.

[0099] Please refer to this again. Figure 13 The reinforcement 9 has an inner fixing part 91 and an outer fixing part 92. The inner fixing part 91 extends toward the center of the honeycomb heating element body 1 to limit the inner ring of the honeycomb heating element body 1 radially and / or axially. The outer fixing part 92 extends toward the outer side of the honeycomb heating element body 1 to limit the outer ring of the honeycomb heating element body 1 radially and / or axially.

[0100] Understandably, by tightly fitting the inner wall of the reinforcement 9 (i.e., the inner wall of the central channel 102) to the second flow-limiting part 22, the gap between the honeycomb heating element body 1 and the reinforcement 9 can be filled and sealed by the second flow-limiting part 22, thereby effectively preventing the gas flow from the joint between the honeycomb heating element body 1 and the reinforcement 9, allowing the gas to burn stably in the honeycomb heating element body 1 and avoiding backfire. In addition, based on the reinforcement 9 being fastened to the top and bottom of the honeycomb heating element body 1, it also plays a role in limiting the position of the honeycomb heating element body 1. The inner fixing part 91 and the outer fixing part 92 on the reinforcement 9 can further limit the honeycomb heating element body 1 radially and / or axially, restricting the movement of the honeycomb heating element body 1 in the radial and / or axial directions, effectively improving the installation stability of the honeycomb heating element body 1.

[0101] In some alternative embodiments, please refer to Figure 10 and Figure 14 The reinforcing member 9 is provided with one or more radially arranged reinforcing ribs 93. The two ends of the reinforcing rib 93 are respectively connected to the inner fixing part 91 and the outer fixing part 92, and / or the reinforcing rib 93 is connected to the top and / or bottom of the honeycomb heating element body 1.

[0102] Preferably, the top and bottom of the honeycomb heating element body 1 are connected by multiple reinforcing ribs 93 in contact. The reinforcing ribs 93 are arranged at intervals around the circumference of the reinforcing part 9, and the two ends of the reinforcing ribs 93 are respectively connected to the inner fixing part 91 and the outer fixing part 92 to achieve interval support for the honeycomb heating element body 1.

[0103] Preferably, the outer periphery of the reinforcement 9 is further provided with a flow guiding structure 94.

[0104] In some alternative embodiments, please refer to Figure 10The flow guiding structure 94 can be annular in shape, thereby guiding the flow of fluid. In practical applications, the flow guiding structure 94 can guide liquid overflowing from the cooking vessel to the periphery of the honeycomb heating element body 1, preventing blockage or damage to the honeycomb heating element body 1.

[0105] In one alternative embodiment, please refer to Figure 13 The bottom of the honeycomb heating element body 1 is provided with a guide partition 15. The guide partition 15 is used to create a ring-shaped interval between the reinforcement 9 and the honeycomb heating element body 1 with a certain distance, so that the interval area forms one or more independent annular gas spaces 16.

[0106] For example, based on the setting of the guide separator 15, the interval area forms two independent annular gas spaces 16, so that the gas can enter the two independent annular gas spaces 16 independently in the direction shown by the arrow, thereby realizing annular segment control and combustion.

[0107] In one alternative embodiment, please refer to Figure 14 , Figure 15 The burner 10 is configured as a split burner and an integral burner.

[0108] Specifically, refer to Figure 14 For a split-type burner, the mixing device 8 includes a connecting cavity 81, a mixing chamber 82, and an ejector tube 83. The outlet end of the ejector tube 83 is connected to the mixing chamber 82, and the outlet end of the mixing chamber 82 is connected to the connecting cavity 81. The outlet end of the connecting cavity 81 is detachably and slidably connected to the reinforcement 9 fastened to the bottom of the honeycomb heating element body 1. In some cases, the bottom reinforcement 9 can also be directly connected to the outlet end of the mixing chamber 82.

[0109] Specifically, refer to Figure 15 For the integral burner, the outlet end of the ejector tube 83 is connected to the mixing chamber 82. The outlet end of the mixing chamber 82 can directly accommodate the honeycomb heating element body 1 and the first flow restrictor 2 and the second flow restrictor 3, or the bottom reinforcement 9 (not shown in the figure). The connection between them is either a detachable embedded installation or a detachable sliding fit connection. In some cases, the bottom reinforcement 9 can also be directly connected to the outlet end of the mixing chamber 82.

[0110] In summary, this utility model provides a honeycomb heating element and a burner for use in a burner. The honeycomb heating element is formed by creating a groove-shaped structure with a first flow-limiting member 2. The main body 1 of the honeycomb heating element is embedded in this groove-shaped structure. The second flow-limiting part 22 of the first flow-limiting member 2 is attached to the side surface of the main body 1. When the first flow-limiting member 2 is installed into the burner cavity along with the main body 1, the second flow-limiting part 22 forms a tight fit with the inner wall of the outer ring of the burner cavity and / or the outer wall of the central channel of the burner. The flexibility and elasticity of the second flow-limiting part 22 compensate for thermal stress, filling the gap formed by the connection between the burner cavity and the honeycomb heating element. This removes irregular or thermally deformed gaps at the junction of the main body 1 and the burner, effectively preventing the gas flow from the junction of the main body and the burner cavity. This allows the gas to burn stably on the upper surface of the main body 1, avoiding backfire.

[0111] The burner provided by this utility model, by tightly fitting the inner wall of the reinforcing member 9 to the second flow-limiting part 22, fills and seals the gap between the honeycomb heating element body 1 and the reinforcing member 9 with the second flow-limiting part 22. Utilizing the relaxation tension formed by the material properties of the second flow-limiting part 22 itself as compensation for thermal stress, it fills the gap formed by the connection between the burner cavity and the honeycomb heating element body 1, thereby effectively controlling the leakage of gas from the gap between the honeycomb heating element body 1 and the reinforcing member 9. The gas can burn stably in the honeycomb heating element body 1, avoiding the occurrence of backfire.

[0112] Those skilled in the art will understand that the accompanying drawings are merely schematic diagrams of a preferred embodiment, and the modules or processes shown in the drawings are not necessarily essential for implementing this utility model.

[0113] Those skilled in the art will understand that the modules in the apparatus of the implementation scenario can be distributed within the apparatus of the implementation scenario as described, or they can be located in one or more apparatuses different from this implementation scenario, with corresponding changes. The modules of the above-described implementation scenario can be combined into one module, or they can be further divided into multiple sub-modules.

[0114] The serial numbers of the above-mentioned utility models are for descriptive purposes only and do not represent the superiority or inferiority of the implementation scenarios.

[0115] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A honeycomb heating element for use in a burner, characterized in that, include: The main body of the honeycomb heating element and the first current limiting component; The first current limiting component includes a first current limiting part and a second current limiting part. The first current limiting part and the second current limiting part cooperate to form a groove-shaped structure, and the honeycomb heating element body is embedded in the groove-shaped structure. The first flow-limiting part is attached to the bottom of the honeycomb heating element body; the second flow-limiting part is attached to the side surface of the honeycomb heating element body, so as to form a tight fit with the inner wall of the outer ring of the burner cavity when the honeycomb heating element body is installed into the cavity of the burner, thereby preventing the gas flow from flowing out from the junction of the honeycomb heating element body and the burner cavity.

2. A honeycomb heating element for use in a burner according to claim 1, characterized in that, The first flow-limiting part is attached to the bottom of the honeycomb heating element body; the second flow-limiting part is attached to the side surface of the honeycomb heating element body, so as to form a tight fit with the inner wall of the outer ring of the burner cavity and / or the outer wall of the central channel of the burner when the honeycomb heating element body is installed into the cavity of the burner, thereby preventing the gas flow from flowing out from the junction of the honeycomb heating element body and the burner cavity.

3. A honeycomb heating element for use in a burner according to claim 2, characterized in that, The edge of the first current limiting part extends to the side surface of the honeycomb heating element body to form a groove structure, or connects with the end face of the bottom of the second current limiting part to form a groove structure; The first current limiting part has a through hole in the middle region that communicates with the main body of the honeycomb heating element, and / or the first current limiting part has a notch for passing through the central channel.

4. A honeycomb heating element for use in a burner according to claim 1, characterized in that, The honeycomb heating element further includes a second current limiting element, which is disposed at the top of the honeycomb heating element body, and / or inside the honeycomb heating element body, and / or between the bottom of the honeycomb heating element body and the first current limiting part.

5. A honeycomb heating element for use in a burner according to claim 4, characterized in that, The honeycomb heating element body includes multiple sub-heating elements stacked along the concave direction of the groove structure, and a second current limiting element is provided between adjacent sub-heating elements.

6. A honeycomb heating element for use in a burner according to claim 1, characterized in that, A sealing ring is provided on the side surface of the honeycomb heating element body and / or cavity, and the sealing ring is sealed and fitted to the second flow limiting part and / or cavity and is away from the side of the honeycomb heating element body; The end of the sealing ring has a snap-fit ​​portion, which snaps onto the outside of the honeycomb heating element body and / or the first current limiting element and / or the cavity.

7. A honeycomb heating element for use in a burner according to any one of claims 1 to 6, characterized in that, The honeycomb heating element body includes at least one corrugated strip unit with a plurality of air vents; multiple corrugated strip units are stacked together, or the corrugated strip units are wound together. The corrugated belt unit includes a first component and a second component that are stacked together, and the first component and the second component cooperate to form the air outlet. The adjacent corrugated belt units, as well as the first and second components within the same corrugated belt unit, are all integrated through welding, riveting, or fastening processes.

8. A honeycomb heating element for use in a burner according to claim 7, characterized in that, Both the first component and the second component include several waveform units, and the waveform units include arc segments and / or straight segments and / or stretchable units.

9. A honeycomb heating element for use in a burner according to claim 8, characterized in that, The waveform unit includes one or more of the following: corrugated waveform unit, semi-circular waveform unit, polygonal waveform unit, triangular waveform unit, and sawtooth waveform unit; The first component and / or the second component further include a reinforcing unit connected to the waveform unit, wherein the reinforcing unit is provided with one or more of the following: protrusions, concave points, and local deformation segments.

10. A honeycomb heating element for use in a burner according to claim 7, characterized in that, The crest height of the first component is 8 to 12 times the crest height of the second component, and the trough height of the first component is 8 to 12 times the trough height of the second component. The height of the honeycomb heating element body in the concave direction of the groove structure is the axial height of the honeycomb heating element body, and the axial height h of the honeycomb heating element body is ≤50mm; And / or, the opening ratio of the air outlet on the preset cross section is between 60% and 90%, and the preset cross section is the cross section of the honeycomb heating element body in the radial direction of the air outlet.

11. A burner, characterized in that, Includes a honeycomb heating element for use in a burner as described in any one of claims 1 to 10, as well as a gas mixing device and a reinforcing component; The reinforcing member is fastened to the top and bottom of the honeycomb heating element body, the inner sidewall of the reinforcing member is tightly attached to the second flow limiting part, and the connecting part at the bottom of the reinforcing member is connected to the gas mixing device to form a gas channel. The reinforcement has an inner fixing part and an outer fixing part. The inner fixing part extends toward the center of the honeycomb heating element body to limit the inner ring of the honeycomb heating element body radially and / or axially. The outer fixing part extends toward the outer side of the honeycomb heating element body to limit the outer ring of the honeycomb heating element body radially and / or axially. The reinforcing member is provided with one or more radially arranged reinforcing ribs; the two ends of the reinforcing ribs are respectively connected to the inner fixing part and the outer fixing part, and / or the reinforcing ribs are connected to the top and / or bottom of the honeycomb heating element body; The outer periphery of the reinforcement is provided with a flow guiding structure.

12. A burner according to claim 11, characterized in that, The bottom of the honeycomb heating element body is provided with a guide partition, which is used to create a ring-shaped interval between the reinforcement and the honeycomb heating element body, so that the interval area forms one or more independent annular gas spaces.

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