A BURNER GASKET AND ITS MANUFACTURING METHOD

Abstract

The invention relates to a burner gasket and its manufacturing method. Specifically, the invention concerns a multilayer composite burner gasket, which provides a gas-tight seal between the burner and the combustion chamber in combustion devices such as combi boilers and furnaces, resistant to high temperatures and combustion gases. It comprises a mesh reinforcement with controlled pitch and density on an inner elastomer guide and an outer RTV silicone coating, and its manufacturing method based on extrusion, meshing, coating, and joining steps.

Description

1 TARIFF A BURNER GASKET AND ITS MANUFACTURING METHOD Technical Area The invention relates to a burner gasket and the method of manufacturing this burner gasket. The invention specifically addresses the connection between the burner and the combustion chamber in combustion devices such as combi boilers and furnaces. an inner elastomer that provides gas tightness and is resistant to high temperatures and combustion gases. Guide-mounted mesh reinforcement with controlled pitch and density, and external RTV silicone coating. multilayer composite burner gasket including extrusion, weaving, coating, It is related to the production method based on assembly steps. State of the Art 10 In heating and cooling systems, especially in combustion devices such as boilers and furnaces, Ensuring a gas tightness between the burner and the combustion chamber ensures the safety of the system. This is important for efficient operation. Burner gaskets, used for this purpose, have high... its resistance to high temperatures, its chemical resistance to combustion gases, and its longevity These are technical products that must retain their elastic properties throughout prolonged use. 15 Current commonly used gasket solutions are generally glass fiber based. It is manufactured from composite materials, typically with a glass fiber filling on the inside. core and outer surface coated with woven or braided glass fiber. It has a structure consisting of layers. The production processes and performance of these types of gasket products used in current technology are 20 It has some technical shortcomings in terms of its characteristics. Firstly, the gasket... The homogeneity of the glass fiber mesh structure in the cross-section cannot be ensured, this situation This leads to a variable density distribution in different regions of the material. Homogeneous This lack of structure causes the crushing behavior of the seal to be inconsistent throughout the product. and as a result, sealing performance varies along the gasket length. 25 This situation demonstrates insufficient pressure force, especially at critical sealing points. or leads to undesirable consequences such as excessive compression. Another problem with the current technology is the lack of adequate control over the production process. lack of parameters and therefore mass production of repeatable quality The difficulty lies in being able to do it. The process involves material feed rate, compression pressure, and layer 30. 2 The fact that parameters such as thickness are not measurable and controllable, and the differences between batches and within batches This causes differences in quality between them. Also, the inner fiberglass material and the outer mesh... Weak strength due to material incompatibilities during layer bonding. This results in delamination and structural damage to the gasket throughout its service life. This leads to disruptions. In addition, the current production methods have a high 5% efficiency rate. The fact that it requires labor and material costs is an economic disadvantage. It constitutes. In conclusion, due to the negative aspects described above and the current solutions being the subject of discussion... Due to its shortcomings, an improvement is needed in the relevant technical field. It has been made. 10 Purpose of the Invention The invention was created by drawing inspiration from existing situations and overcoming the aforementioned drawbacks. It aims to solve the problem. The invention aims to overcome structural and production deficiencies encountered in the current technology and to improve the burner. Developed to improve the performance of sealing gaskets, especially 15 In heating systems, combustion devices such as boilers and furnaces use burners for combustion. a gasket solution designed to ensure a gas tightness between the chambers It is related to. The invention is a composite material with a multilayered structure, suitable for production. where the parameters can be precisely controlled and improved throughout the cross-section a gasket design exhibiting mechanical behavior, the manufacturing method of this gasket, and the final 20 It includes the product. The main objective of the invention is to improve the non-homogeneous glass fiber structures used in current technology. Instead, it consists of an inner guide elastomer profile, mesh layers and an outer coating layer. The aim is to offer a multilayered composite gasket structure. This layered structure consists of each layer 25% of the improvement in function and the contribution of material properties to gasket performance It allows for maximization. Another objective of the invention is to achieve homogeneous, stable and controllable stiffness across the gasket cross-section. The aim is to provide a crushing characteristic. In this way, what is observed in current applications The problem of variable sealing performance is eliminated, and the gasket length is adjusted accordingly. Consistent pressure force and sealing capacity are achieved at every point. 30 3 Another objective of the invention is to determine the number of pitches and the density of the mesh structure used in production. and by making parameters such as the number of layers measurable and repeatable, The aim is to minimize uncertainties in the process and ensure mass production stability. It offers improvements in terms of controllability and quality assurance, both within the party and among the parties. This makes it possible to significantly reduce the standard deviations between 5. Another objective of the invention is to improve elastomer-elastomer compatibility in the bonding process. by improving interlayer adhesion and thus increasing the strength of the seal. The aim is to increase the material between glass fiber and elastomer in the current technology. The problem of weak strength resulting from incompatibility, chemical and physical This can be resolved by using compatible elastomer-based materials. 10 is the goal. The invention provides significant technical and economic advantages as a result of achieving these objectives. It provides continuous and stable series thanks to controllable production parameters. Production possibilities are obtained, which enables industrial-scale production and improves quality. This ensures consistency. Achieving homogeneous mechanical behavior throughout the cross-section, 15 ensuring consistent sealing performance across the entire gasket geometry. It provides and exhibits higher tolerance to assembly tolerances. Available It offers a significantly lower cost alternative solution compared to other applications. This increases the market competitiveness of the product. The technical advantages provided by the layered composite structure. High resistance to high temperature, pressure and mechanical compression conditions due to impact 20 This is demonstrated, which extends the service life of the product. Furthermore, the invention has implications for different sectors. It allows for the design of cross-section geometries that can be adapted to the needs, and Thus, a modular solution platform that can be used in various industrial applications. It constitutes. The structural and characteristic features and all the advantages of the invention are given in the figures below and 25 This becomes clearer thanks to the detailed explanation written with references to these figures. This will be understood, and therefore the evaluation should also take these forms and detailed explanations into consideration. It needs to be done by taking precautions. Figures that will help understand the invention. Figure 1 shows the layered structure of the burner gasket. 30 Figure 2 shows a cross-sectional view of the burner gasket. Figure 3 shows the appearance of the elastomer bonding. 4 Explanation of Part References 1 Inner elastomer guide 2 Knitting 3 RTV silicone coating 4 Elastomer bonding 5 Detailed Description of the Invention This detailed description explains the burner gasket that is the subject of the invention and the manufacturing process of this burner gasket. The preferred structures of the method are solely aimed at a better understanding of the subject. This is explained as follows. The invention relates to a burner sealing gasket with a multilayer composite structure, suitable for both product 10. It includes both the structure and the production method of this product. The inner elastomer guide (1), located in the innermost part of the structure, forms the geometric core of the gasket. It is an element that forms and constitutes the foundation of the entire structure. Internal elastomer guide (1), It functions as the base layer on which the mesh (2) will be made and the mesh (2) process a guideline that allows it to be carried out in a homogeneous and controlled manner 15 It undertakes the function. The inner elastomer guide (1) provides flexibility in the gasket cross-section. It also provides homogeneity and structural continuity, thus ensuring the entire seal. This enables it to exhibit consistent mechanical properties throughout its length. Internal The elastomer guide (1) also provides rigid structural integrity to the structure, seal assembly When installed, it provides the appropriate diameter and crushing rigidity properties. Elastomer 20 Material selection, high temperature resistance, chemical stability and elastic recovery They are manufactured according to their specifications, ensuring that the gasket maintains its geometric shape even during long-term use. It is able to maintain its form. The mesh (2) applied on the inner elastomer guide (1) is a high-strength layered mesh. It has a structure and the main reinforcement that determines the thermal and mechanical performance of the gasket is 25. It forms the element. The mesh (2) is placed on top of the inner elastomer guide (1) in a controlled manner. By weaving in this way, the structure is given high temperature resistance and superior mechanical strength. It provides features such as the number of pitches, density and number of layers of the weave (2). The parameters can be controlled during production, and thanks to this controllability... A homogeneous reinforcement distribution is obtained along the gasket cross-section. Mesh (2) material 30 It is usually made of glass fiber or other high-strength material that has high temperature resistance. fibers are used and these fibers are wrapped layered around the inner elastomer guide (1) A three-dimensional reinforcement network is created. This layered structure is applied to the gasket. By distributing radial and axial loads homogeneously, it prevents localized crushing or It prevents deformations. 5 Defined as RTV silicone coating (3) applied to the outer surface of the mesh (2) layer It is a layer of silicone material that vulcanizes at room temperature. RTV silicone coating (3) preserves the integrity of the mesh (2) structure and these mesh (2) layers It acts as a binding agent, preventing them from separating or dispersing. RTV silicone coating (3) also forms the outer shape of the gasket and the gasket The ability to hold firmly to the channel in which it will be placed during assembly. 10 This is due to the room temperature curing property of RTV silicone material, which facilitates production. RTV silicon offers a significant advantage in terms of facilitating the process. The chemical structure of the coating (3) shall be compatible with the internal elastomer guide (1) This is achieved by selecting and thus obtaining strong interlayer adhesion. External Coating the surface with silicone also increases the slip resistance of the gasket and assembly 15 This prevents the seal from shifting out of position afterwards. Elastomer coupling (4) is formed by joining both ends of the gasket and the structure It is the region that enables it to achieve a monolithic form. Elastomer bonding (4) process, suitable for the circular or closed geometry of the channel where the gasket will provide a seal This makes it possible to shape it as elastomer-20 in this joining part. Since elastomer compatibility has been achieved, the material seen in the current technique The problem of weak strength resulting from incompatibility is eliminated, and The bonding region exhibits the same mechanical properties as the rest of the gasket. Elastomer bonding (4) process, vulcanization or chemical bonding methods This is done using [method] and thus there is no weakness at the point of joining. 25 or no discontinuity occurs. The manufacturing method for the burner gasket, which is the subject of this invention, is as follows: In the extrusion profile production stage, which is the first step of the production process, the inner elastomer The guide (1) is produced using the extrusion method. At this stage, the selected The elastomer material is extruded through a die to achieve the desired cross-sectional geometry and diameter. 30 A continuous profile is obtained. The extrusion parameters are the feed rate, By precisely controlling the mold temperature, drawing speed, and cooling conditions, the internal dimensional tolerances of the elastomer guide (1) remain within narrow limits 6 This ensures the surface quality and geometric accuracy of the profile obtained in this step. Since the extrusion process directly affects the success of the next knitting (2) process Stability is important. In the second production step, the glass fiber mesh stage, the inner fibers obtained by extrusion... A layered mesh (2) structure is applied onto an elastomer guide (1). In this process, the inner 5 elastomer guide (1) is passed through a knitting machine and high strength glass fiber or similar reinforcing fibers, predetermined pitch number, weave density and The guide is wound according to the number of layers parameters. Knitting (2) process During this process, parameters such as fiber tension, winding angle, and layer thickness are continuously adjusted. It is monitored and controlled. Thanks to this control mechanism, the knitting (2) 10 its structure exhibits a homogeneous distribution along the gasket length and each production It ensures that products with the same properties are obtained in the batch. Layered weave (2) Its structure provides radial strength while simultaneously compressing the gasket cross-section. It also optimizes the behavior of those under the surface. In the third production step, the RTV silicone material coating process, the mesh (2) structure is 15 RTV silicone coating (3) is applied to the outer surface of the braided semi-finished product. passing through a silicone coating line and applying silicone of controlled thickness to the outer surface. This is done by coating the material. RTV silicone material By adjusting the viscosity, application thickness and curing rate, between the mesh (2) fibers A homogeneous coating layer is formed that penetrates and covers the entire structure. 20 Curing of silicone coating (3) at room temperature or under slight heating full integration of the coating with the mesh (2) is expected during this period. This step not only provides external surface protection, but also... It also makes the structural integrity of the mesh (2) layers permanent. During the cutting and molding stage, which is the final step in the production process, 25 The manufactured gasket is cut to lengths suitable for the burner mounting diameter and molded. The process involves bringing it to its final form. At this stage, the gasket is shaped as desired. cut to length and both ends prepared for elastomer bonding (4) process They are processed appropriately for this purpose. Then the gasket ends are assembled together in a mold. 30 (4) The process is completed. Temperature, pressure and time during the molding process By checking the parameters, the mechanical properties of the bonding area and the gasket body are the same. It is ensured that it has the necessary properties. As a result of this final process, it is leakproof. 7 a one-piece burner gasket with a closed geometry that will fit perfectly into the channel it will provide. is obtained.

Claims

8 REQUESTS 1. To ensure a gas tightness between the burner and the combustion chamber in heating devices. It is a burner gasket used for this purpose; its characteristic is:  the part that forms the central layer of the structure and on which the mesh (2) will be made forming, determining the geometry of the gasket and the appropriate diameter for the mounting location 5 an internal elastomer guide (1),  High-strength layered mesh woven onto the inner elastomer guide (1) in the structure, determines the thermal and mechanical performance of the gasket and the structure providing high temperature resistance and mechanical strength properties, By controlling the parameters of pitch number, weave density and number of layers, 10 a mesh that provides homogeneous reinforcement distribution across the gasket cross-section (2),  Applied to the outer surface of the mesh (2) structure and at room temperature vulcanized, preserving the integrity of the weave (2) and the weave the outer shape of the gasket prevents the layers from separating from each other forming and fitting tightly into the channel where the gasket will be placed during assembly 15 an RTV silicone coating (3) that provides adhesion properties,  formed by joining both ends of the gasket, making the structure a monolithic unit. the channel where the gasket will provide a seal, which allows it to take on its shape It is possible to shape it according to its circular or closed geometry. (4) 20 It includes.

2. Burner gasket conforming to Claim 1, featuring high-temperature resistant glass. It contains knitted fiber or other strength fibers (2).

3. The manufacturing method and characteristics of a burner gasket conforming to Claim 1 or 2; (a) Production of the inner elastomer guide (1) by extrusion method, 25 (b) Layered mesh (2) on inner elastomer guide (1) obtained by extrusion implementation of its structure, (c) Application of RTV silicone coating (3) to the outer surface of the mesh (2) structure, (d) gaskets produced continuously in lengths suitable for the burner mounting diameter cutting, 30 9 (e) where the gasket ends are assembled in a mold and vulcanization or elastomer bonding process using chemical binder (4) completed It includes the steps of the process.

4. The production method is in accordance with claim 3 and its characteristic is; (b) in the process step, the inner elastomer 5 the guide (1) passing through a knitting machine and high strength glass fiber or similar reinforcing fibers with a predetermined pitch number, mesh density, and Wrapping the yarn around the guide according to the layer count parameters, during the knitting process. Parameters such as fiber tension, winding angle, and layer thickness are constantly monitored. It is monitoring and control. 10 5. The production method conforming to claim 3 or 4 has the following characteristic: (c) in process step, braided semi-woven fabric. The product is passed through a silicone coating line and a controlled thickness is applied to its outer surface. silicone coating, viscosity of RTV silicone material, application By adjusting the thickness and curing speed, it penetrates between the mesh (2) fibers. The goal is to create a homogeneous coating layer that covers the entire structure. 15 6. The production method conforming to claims 3, 4 or 5 is characterized by; after process step (e). by controlling temperature, pressure and time parameters during the molding process the joining area must have the same mechanical properties as the gasket body This includes the cutting and shaping steps involved.

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