• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    stove burner and cooktop. the invention relates to a gas burner (25) for stoves, cooktop and the like comprising a section for the air fuel gas mixture (23,24); a lid (1) closing the mixing section; and a crenellated wall (26) comprising first segments of a first thickness and one or more second segments of a second thickness greater than the first thickness, the second segment allows the lid (10) to be fitted and placed on the wall, and main doors (20) which are constant for a certain length of said main doors (20) from an inner part towards an outer wall of the battlements (26), and near the outer wall of the battlements ( 26), the door height is reduced by an angle to; one or more secondary doors (30) smaller than the main doors (20), wherein the at least one secondary door (30) has a change of direction such that the height of the at least one secondary door (30) is reduced from the interior towards the outside of the crenellated wall (26) by an angle p until the height of the door reaches a constant height near the outside of the wall; and two or more tertiary doors (40) for each first and second segment having a half-cane shape, the diameter of each half-cane being equal to the width and depth of said tertiary door, wherein said tertiary doors (40) are memoes in each. at least one secondary port (30).
    公开号:BR102015012467A2
    申请号:R102015012467-8
    申请日:2015-05-28
    公开日:2018-02-06
    发明作者:Botello Cabrera；Roberto
    申请人:Mabe, S.A De C.V.；
    IPC主号:
    专利说明:

    (54) Title: BURNER FOR COOKER AND COOKING SURFACES (COOKTOP) (51) Int. Cl .: F23D 14/02 (30) Unionist Priority: 28/05/2014 MX MX / A / 2014/006384 (73) Holder (s): MABE, SA DE CV
    (72) Inventor (s): CABRERA BOTELLO, ROBERTO (74) Attorney (s): CLÁUDIO SZABAS (57) Summary: BURNER FOR COOKER AND COOKING SURFACES (COOKTOP). The invention relates to a gas burner (25) intended for stoves, cooking surfaces (cooktop) and the like comprising a section for mixing (23,24) of combustible gas with air; a lid (1 O) that closes the mixing section; and a battlements wall (26) comprising first segments with a first thickness and one or more second segments with a second thickness greater than the first thickness, the second segment allows the lid (1 O) to be adjusted and placed on the wall, and main doors (20) which are constant for a determined length of said main doors (20) from an internal part towards an external part of the battlements wall (26), and close to the external part of the battlements wall ( 26), the height of the door is reduced by an angle a; one or more secondary doors (30) with a smaller size than the main doors (20), where at least one secondary door (30) has a change of direction such that the height of at least one secondary door (30) is reduced from the inner part towards the ex (...)
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    1/15
    BURNER FOR COOKER AND COOKING SURFACES (COOKTOP).
    Field of the Invention [0001] The present invention falls within the field of gas burners, particularly burners used in domestic appliances, such as stoves, kitchens and cooking surfaces.
    Background of the Invention [0002] A wide variety of burners can be found on the market for use in domestic or industrial applications that are based on an atmospheric Bunsen burner; initially, the main objective of these was to provide a flame that affects the utensils to be heated; achieving this without considering aspects of fuel efficiency used in heating or ecological aspects, heating speed, shape of cooking utensils, among others, over time the design of the burners has evolved in order to solve the aspects mentioned above.
    [0003] Currently, there is a considerable number of burners for use in domestic applications on the market; initially, the main objective of these was to provide a flame that affects the utensils to be heated without considering aspects of fuel efficiency used in heating or ecological aspects; over time, the design of the burners has evolved to solve the aspects mentioned above, among others.
    [0004] As a state of the art to the present invention, the depositor is aware of the documents discussed below.
    [0005] In patent application with publication number EP 0 554 511 an atmospheric gas burner is described with a primary air premixer, with a ring burner with gas outlet ducts and a cover for the burner, designed if appropriate as a single integral part with the ring, as a proposed solution for atmospheric burners in particular as the NO X content in the flaring gas that is produced, as well as the CO content are both considerably, and particularly in a very wide adjustment range between the
    2/15 open and closed positions. The above is achieved thanks to the fact that the central axis of the outlet ducts has an angle of deviation of 0 ° in relation to the opening radius of the respective outlet.
    [0006] US patent 1,598,996 describes general purpose gas burners in which the internal parts are freely accessible, through which the burner is adapted to be easily and quickly cleaned in order to eliminate carbon deposit residues, as well as such as fat and other waste. Similarly, this burner is provided with a top cover that can be removed from the burner for the purposes previously described, and at the same time, it is equipped with a firm connection that seals the burner body against any possibility of fuel leakage between the surface of the burner. contact of the lid and the burner body. In addition, the burner is provided with two parts in which the burner body is coupled to a mixing tube which is adapted to be removed in a sliding manner. The burner is provided with means to ensure a mixture of air and fuel before igniting and burning the fuel, in order to reduce carbon deposits to a minimum and produce a flame of the highest possible intensity.
    [0007] US 7,731,493 to Sartine et al. describes a circular Bunsen burner for domestic use, which comprises a pattern of a main door by a secondary door which is thereby able to form the circular wall door crown, where due to this highly simplistic design, it presents serious problems in the the fact that the speed at the doors is very high, especially at the main door, this, as the document itself indicates, creates a detachment of the flame or a low anchoring of the flame dart in the burner crown, which causes low combustion in addition to the fact the crown flame has a high tendency to extinguish; in order to partially solve this problematic aspect, the inventor reports that he placed a step on the periphery of the burner crown to increase the lower diameter of the door crown; in such a way that the peripheral step discussed is in fluid contact with the door, preferably with the main doors, with the final purpose of increasing the length of the main door duct in some way, by implementing the said peripheral step, with this the inventor seeks to reduce
    3/15 mixing speed inside the door, which clearly seems to have low functionality, to be impractical and inefficient considering that a better design of the door is required in order to avoid that the flame tends to stand out, given that, as the inventor himself points out in the document under discussion, the stability of a flame is a function of: (i) the combustion speed of the air-fuel mixture; (ii) the mass proportion of the air-fuel mixture; (iii) the total area of the burner crown door; which results in something contradictory when studying the document that the inventor knows the theory, but when putting his burner into practice, he completely ignores these principles by creating completely straight doors without any means whatsoever to efficiently control the mixing speed. air-fuel flowing through the doors, being forced to use a solution widely known in the field in order to create a little extra friction that will allow a small reduction in the speed of the air-fuel mixture, through the aforementioned peripheral step by which it is it is possible in a palliative way to weakly anchor the flame dart in the crown; continuing with the study of the aforementioned crown, it can also be observed that with regard to the design proposed by the inventor of the matter under discussion, it is alleged and presumed that its design allows to use a cap of approximately the same diameter as the crown, which seems it is obvious that such a design encourages the separation of the flame dart from the crown, which leads us to think that the burner in question has no practical use or functionality.
    [0008] With respect to the burners contained in the documents cited above, none of them has the structural and operational characteristics of the burner of the present invention, for example, none of the burners of the prior art has at least two air-fuel mixture sections that allow to properly mix or combine air with the fuel, also said mixing sections allow the creation of a mass flow towards the doors so that the speed of the mixture flow is such that it prevents the flame detachment, the dart remaining anchored in the burner providing, in addition, efficient combustion; also none of the prior art documents makes reference to a particular design for the doors that changes the direction of the mass flow of the ar4 / 15 fuel mixture, reducing the speed of the referred mass flow inside the door, in addition strategically directing it towards the utensils to be heated that are placed in the burner; thus guaranteeing the correct anchoring of the flame dart in the body of the burner, as well as an optimal combustion.
    [0009] One aspect of the present invention may be to provide a burner with at least two mixing sections, a pre-mixing area precisely at the end of the Venturi tube that assists in the air-fuel mixture that has been entrained through the tube Venturi, also said premix chamber, assists in uniform dosing of the mass flow determined for the mixing chamber surrounding the premix chamber, in this second chamber the possible flow variations that may occur when operating as an area damping units are homogenized, it helps to continue the air-fuel mixture towards the door section, in such a way that the speed of the liquid inside the doors is uniform and within a certain parameter that prevents the flame from detaching.
    [0010] Another aspect of the present invention may be the provision of a burner that in its main doors has a change of direction that allows the reduction and control of the mass flow of the air-fuel mixture that flows inside it in addition to the direction of the flame dart, avoiding the detachment of the flame and thus favoring a correct, as well as efficient combustion, in addition to helping to achieve a better contact of the flame darts with the utensils to be heated that are placed on the burner.
    [0011] Another aspect of the present invention may be to provide a burner with a peculiar design for the burner cover that allows interaction with the new door design, assisting in the correct anchoring of the flame darts to the body of the burner.
    [0012] Another aspect of the present invention may be to provide a burner with good energy efficiency, as well as low levels of carbon monoxide, being easy to manufacture and present low cost.
    [0013] Yet another aspect of the present invention may be to provide the burner with at least one air ring at the bottom of the burner, precisely
    5/15 under the door to increase the mass flow of secondary air towards the base of the flames.
    Brief Description of the Invention [0014] The present invention belongs to the field of gas burners, particularly Bunsen burners used in equipment for domestic application, such as stoves, kitchen or cooking surfaces; there is a wide variety of these burners both on the market and in the state of the art, these are somewhat difficult to design and put into practice, as they require extensive laboratory tests, as well as advanced knowledge in the areas of combustion, fluids, heat transfer and mechanics among others; presenting a burner that works is an art in itself, and even more difficult is to obtain a burner that works efficiently, and even more difficult is to obtain all this at low cost, as this implies advanced knowledge of the processes of manufacture. Thus, from the above, it is evident that the burner of the present invention was particularly difficult to design, put into practice and industrialize, as it has been optimized in all its aspects, as it presents both good energy efficiency and combustion, it is easy of manufacturing, the building materials have been optimized to obtain a burner with low-cost materials, in addition to being visually attractive. [0015] The burner object of the present invention is formed on a base of some metallic material preferably aluminum, or with an alloy containing aluminum, the body of the burner is obtained by injection or forging; the lid is obtained by punching or casting iron, forging, sintering, among others, and is preferably manufactured from steel, the burner does not have any moving parts, nor does it require any assembly other than the lid which is placed only on the wall with niches peripheral to the cylindrical wall of the doors.
    [0016] At the bottom of the burner, an inlet is placed through which the fuel is expelled, the inlet is directed to a Venturi tube placed in the lower central part of the burner, said Venturi tube drags the primary air that surrounds it and aspirates it into the tube to fluidly conduct the primary air entrained by the fuel towards the premix chamber that assists in mixing the air6 / 15 fuel that has been entrained through the Venturi tube. Said premix chamber also assists in uniformly dosing a certain mass flow to the mixing chamber surrounding the premix chamber. In this second chamber, the possible variations in flow that can occur in the homogenization of the volume of the air-fuel mixture are standardized before entering the doors, knowing that a type of peripheral ring is formed, which homogeneously distributes the air gas mixture. for the doors, it also regulates the energy of the fluid of the said air-fuel mixture, thus homogeneously dosing a mass flow towards the doors, which helps to continue with the air-fuel mixture, by dosing the air-fuel mixture in the direction of the door section, so that the fluid speed inside the doors is uniform and within a certain parameter that prevents the flame from detaching; the main doors, on the other hand, have a peculiar design, knowing that these doors change the direction of the mass flow of the air-fuel mixture that leaves the mixing chamber, which forces a reduction in the speed of the said mass flow within the door, in addition to the strategic direction for the utensils to be heated placed on; thus ensuring the correct anchoring of the flame dart to the burner body, as well as optimum combustion. Precisely under the doors, at the bottom of the external base of the burner body, the present invention can present an air ring, said air ring allowing the increase of the secondary air flow towards the base of the flame.
    Brief Description of the Figures [0017] The illustrated embodiment can be described with reference to the attached figures, in which:
    [0018] Figure 1 shows an isometric view of the burner placed on a volcano with a grid.
    [0019] Figure 2 is an exploded view of the burner assembly.
    [0020] Figure 3a is an isometric top view of the burner body.
    [0021] Figure 3b is a conventional bottom perspective view with the burner body cut by one of its secants.
    7/15 [0022] Figure 4 shows a cross section of the burner assembly in which the air flows, the fuel and the air-fuel mixture can be seen.
    [0023] Figure 5 shows an isometric view of the burner body, showing in detail the battlements wall, the three types of doors, as well as the way they are placed on said battlements battlements wall.
    [0024] Figure 6 is a cross section of the secondary door, where its shape can be observed, as well as the secondary air flow in addition to the fuel mixture.
    [0025] Figure 7 is a cross section of the main door, where its shape can be observed, as well as the secondary air flows in addition to the fuel mixture.
    [0026] All figures were designed to assist and facilitate the explanation of the teachings of the present invention. The extensions of the figures, with respect to the number, position, relation and dimensions of the parts to form the preferred embodiments, will be explained or will reside in the knowledge of the technique, once the teachings of the present invention have been read and understood. In addition, the exact dimensional dimensions and proportions that confer strength, weight and specific requirements will also be within the knowledge of the technique after reading and understanding the teachings of the present invention.
    Detailed Description of the Invention
    Definitions [0027] The use of the term "approximately" provides an additional determined range. The term is defined as follows: the additional range established by the term is approximately + 10%. As an example, but not limiting, if it says “approximately 8 mm”, the exhaling range is within 7.2 to 8.8 mm.
    [0028] Figure 1 illustrates the burner (25) object of the present invention, disposed on a surface or cover (19), said cover (19) preferably comprises a volcano (28) which is understood as a truncated conical protuberance as a volcano on which the burner (25) is placed, in an alternative embodiment of the present invention, the cover (19) can be completely smooth, or without
    8/15 volcanoes; whereby the burner (25) is flushed in relation to the cover (19); in another alternative embodiment, the cover (19) may have recessed recesses in the form of a truncated cone that can house the burner (25). In any case, a grid (27) is placed over the burner assembly (25) (with or without volcano (28)), which comprises a series of = bars that extend over the burner (25) and which helps in support the kitchen utensils to be heated; the distance between the grid (27) to the burner (25) should be determined experimentally in addition to meeting the official requirements for each country, which will obviously affect its design. For the design of a burner (25), it is desirable to have a grid design (27), it would be good to consider this desired pairing for combustion efficiency tests, knowing that the grid bars (27) being on the burner (25) is prudent to design doors that meet this situation, which is why the burner (25) of the present invention comprises a series of secondary doors (30) with reduced dart that allows the transfer of the flame between the doors (20 , 30, 40) without overheating the grill bars (27) which helps in fuel economy, as well as increases combustion, considering that without these considerations, the flame dart would fall on the bottom of the grill bar (27) overheating the latter in addition to obtaining adverse results for combustion, in view of the obstruction, which reduces the efficiency of the burner.
    [0029] Now then, figure 2 shows an exploded view of the burner (25); and figure 4 shows an isometric cross section of the burner assembly (25); both figures are useful for describing the components of the assembly. At the bottom of figure 2, the nozzle (14) can be seen, which at its lower end is coupled to the tube (14) that carries the fuel. The nozzle (14) on its outer periphery comprises a rope on which a mini connector (15) is wound, the mini connector assembly (15) and nozzle (14) is fixed on the bottom of the support (16), thanks to the fact that said support (16) comprises a hole in the lower part through which the mini connector assembly (15) and nozzle (14) is inserted, to subsequently screw a nut over a mini connector (15); this assembly is coupled to the bottom face of the volcano (28) by means of some screws or other means of fixation (17). The volcano
    9/15 (28) in its upper face comprises a hole in its center through which the venturi tube (12) of the burner (25) is introduced, which is aligned concentric with the nozzle (14) leaving a certain height between said nozzle (14) and the lower part of the Venturi tube (12) which allows the aspiration or drag of the primary air, once the fuel has passed through the nozzle (14), in view of the Venturi effect caused there.
    [0030] The lower face of the burner (25) is equipped with a few feet (31) which support the burner (25) on the upper face of the volcano (28), allowing the creation of a gap or space between the face bottom of the burner (25) and the upper face of the volcano (28), which allows a free flow of air, which partially assists in cooling the burner base (25), as well as supplying air uniformly to the base of the burner (37). The burner (25) is also equipped with an ignition plug (22) placed at a particular point on its periphery, in such a way that the burner (25) was provided with a washer (38) that has the purpose of housing the plug ignition (22); said ignition plug (22) is adjusted in place by means of a secure (38) and support (41) in the shape of a "U"; the complete assembly of the burner (25) discussed above is crowned with the cover (10), which itself is placed only on the battlement wall or door wall (26).
    [0031] Now turning our attention to figures 3a, 3b and 4 that illustrate the body (11) of the burner (25); figure 3a is an isometric top view of said body (11); in turn, figure 3b is a lower isometric view with the body of the burner cut on the wall with battlements (26) which allows to observe the different doors (20, 40); Figure 4 shows an isometric cross section of the burner assembly in which the air flows, the fuel and the air-fuel mixture can be observed. From these figures, the Venturi tube (12) located at the bottom of the body (11) is highlighted, which is in fluid connection with the premixing chamber (23) that surrounds the duct at the top of the Venturi tube ( 12), the inner crown (35) has the shape of a ring, which projects in a cylindrical shape on the base of the premix chamber (23). Said inner crown (35) reduces the distance or void between the base of the premix chamber (23) and the bottom face of the lid (10). Now then, it must be stressed at this point that the
    10/15 fuel that leaves the nozzle (14), drags the primary air that leaves in the vicinity of the lower part of the Venturi tube (12) causing the Venturi effect, in such a way that the air and the fuel have not been completely mixed. In this way, when reaching the premixing chamber (23), thanks to the barrier formed by the inner crown (35), it is provided that the fluid composed of air and fuel has a first opportunity to mix. Also, said inner crown (35) assists in dosing the mass flow of the air-fuel mixture towards the mixing chamber (24); knowing that once the fuel has been pre-mixed in the pre-mixing chamber (23), the fuel air from the pre-mixture needs to pass between the upper face of the inner crown (35) and the lower face of the cap ( 10), in such a narrow area the speed of the mass flow of the pre-mix increases, which causes said mass flow of the pre-mix to reach the mixing chamber (24) with a desirable speed and in a uniform manner. Said mixing chamber (24) is formed in its lower part by the exposed upper face of said mixing chamber (24), one side is formed by the external wall of the inner crown (35), the remaining side formed by the internal face of the wall with battlements (26). This mixing chamber (24) encourages air-fuel mixing and also functions as a uniform area for air-fuel mixing as a reservoir; similarly, another function is to homogenize the speed and pressure of the mass flow of the air-fuel mixture before entering the doors, knowing that: it creates a type of ring that itself distributes the gas-air mixture in the direction of the doors (20, 30, 40). The mixing chamber (24) also regulates the flow energy of said air-fuel mixture, whereby a desired mass flow rate of the air-fuel mixture is obtained in the direction of the doors (20, 30, 40).
    [0032] Figures 5, 6, 7 are useful to observe the shapes of the doors (20, 30, 40); figure 5 is an isometric segment of the burner body (11), where the battlements wall (26) can be seen surrounding the periphery of the burner body (11), it is on said battlements wall (46) that three different types of doors are formed, which the burner (25) object of the present invention comprises; it should be emphasized at this point that the battlements wall (26) can have two thicknesses measured from the inner face towards the outer face of the said wall with
    11/15 battlements (26) exactly in the sections of the wall with battlements (26) which houses the tertiary doors (40) and which are separated from each other by a main door (20) or by a secondary door (30), as you can be seen in figure 5. Now then, the first thickness, which is called “el”, has a preferable width that is used in the vast majority of sections that form the battlement wall (26); said thickness varies between approximately 5 mm and 8 mm; the second thickness, which is called “e2”, is used sporadically in the periphery of the battlement wall (26), said thickness varies between approximately 8 mm and 10 mm. The fact that there is a segment of the wall with battlements with different thicknesses, that is “el” <”e2”, allows “e2” which is thicker, to protrude over the rest of the battlement wall (26) that presents a “el” thickness and, in this way, it is possible to properly place the lid (10) on the burner crown or on the battlements wall (26) allowing for proper adjustment, presenting a desirable set, knowing that the lid, as well like the burner, undergo thermal expansion during their operation, such that in the preferred embodiment of the invention at least three battlemented wall segments (26) having an “e2” width allow a pertinent support for the lid on the battlements wall ( 26); leaving the possibility of using any number of segments with an “e2” thickness for an alternative realization. Following the same order of ideas, the battlements wall (26) is composed of the referred sections that house the tertiary doors (40), in this highly peculiar design for the battlements wall (26) object of the present invention at least two tertiary doors ( 40) per segment are required, with the possibility of having more than two in an alternative embodiment of the present invention. Said tertiary doors in a preferred embodiment have a "half-cane" shape, which is established on the upper face of a certain segment of the wall with battlements (26), where the diameter of the half-cane is equal to the width and depth of the door , which varies between approximately 0.8 mm and 3 mm. Said half-cane tertiary doors (40) have a straight cross section thus allowing the passage of the air-fuel mixture that leaves the mixing chamber (24), without any greater restriction than that defined by its shape, as well as its location. In an alternative embodiment of the present invention, the half-cane shape can be a shape
    12/15 trapezoidal, square, rectangular, oval or almost any other type of shape, the important thing in these doors is to conserve the area of the door which must be similar to that obtained in the preferred realization (half cane). Now then, the secondary doors (30) that are used sporadically on the battlements wall (26) as can be seen in figures 3a, 5, also on the main doors (20), help to separate the segments of the wall with battlements ( 26) that houses the tertiary doors (40). The secondary doors (30), which are smaller in size than the main doors (20), but which are larger than the tertiary doors (40), follow the same grid format (27), in such a way that their location inside of the battlements wall (26) will depend completely on the grid design (27) that is placed on the burner (25). Now, the fact of having a series of secondary doors (30) allows energy savings knowing that the referred secondary doors (30) will serve to create the transfer of flame darts, that is, to be able to transfer the flame shape of a tertiary door (40) in a given segment of the battlements wall (26) to another tertiary door (40) located in an adjacent segment of the battlements wall (26), thus allowing the correct transfer of the flame over the outer periphery of the battled wall (26). In this way, the secondary door (30) emits a smaller dart that is not broken with the finger or part of the grid (27) that is on the burner (25), since the grid design (27) will determine the number of secondary doors (30) that are located inside the battlements wall (26). Turning our attention now to figure 6, it can be seen that it illustrates a cross-section of said secondary door (30); here it can be seen that unlike the tertiary doors (40), the secondary door (30) is not straight, on the contrary it presents a change of direction, which causes the mass flow of the fuel mixture that leaves the mixing chamber (24 ) and that moves inside the secondary door (30), thus the height of the door is reduced from the inside towards the outer side of the battlements wall (26), following an angle β that varies between approximately 45 ° and 85 °, provided that the height of the door has a constant determined height that varies between approximately 1 mm and 2 mm and does not exceed 75% of the total length of the secondary door (30), which makes the mixture ar13 / 15 fuel increase your speed, but only allow the passage of a certain mass flow with a certain speed and direction, the latter being specifically horizontal. In this way, the flow that passes through the horizontal straight throat at the end of the secondary door (30) is broken against the cover frame (10), which allows the correct anchoring of the flame dart established by the secondary door (30), knowing it appears that an area of turbulence is created exactly under the aforementioned frame (33), which forces the mass flow of the air-fuel mixture out of the secondary door (30) downwards to later rise, thus successfully anchoring the flame dart in the burner (25); in connection with the above discussed in relation to the secondary door (30), it should be borne in mind that one wants to obtain a short flame dart that promotes an efficient flame transfer between the tertiary doors (40), obviously avoiding the detachment of the flame or poor combustion.
    [0033] Turning now to the main doors (20) whose cross section is illustrated in figure 7; said main doors (20) have a shape somewhat inverse to that outlined for the secondary doors (30) where the height of the main door (20) remains constant for a good section of the length preferably of approximately 50% to 75% of the length of the main door (20), so for the rest of the length the height is reduced by an angle a, which varies between approximately 45 ° and 85 °, which causes a sudden change in the direction of the mass flow of air-fuel that moves from the main door (20) leaving the mixing chamber (24), said radical change of direction causes the mass flow that moves from the main door (20) to lose energy; the change of direction also directs the flame to the utensils to be heated placed on the grill (27) and on the burner (25), it can also be observed that the mass of air-fuel that moves through the upper part of the main door (20) exactly when leaving the said main door the main door (20) is broken with the bottom face of the frame (33) of the cover (10), which makes it precisely under the frame in the exit area of the main door (20 ), an area of turbulence is generated which makes the flame dart emitted by the main door (20) capable of being properly anchored. In this way, the shape of the door on a burner is such that it allows a good exit speed that
    14/15 allows the flame dart to hit the surface to be heated, since having high speed ranges would cause the flame to detach, or conversely, a low flame speed would cause poor combustion, as well as a low level of heat energy transfer to the utensils to be heated. In this way, the balance achieved by this ingenious shape of the proposed doors (20, 30, 40), knowing the variations in the direction and speed of the mass flow of the air-fuel mixture that travels through the referred doors (20, 30 , 40); thus obtaining an efficient combustion, avoiding the detachment of flame so unwanted in a burner, that it is easy to manufacture and, therefore, of low cost.
    [0034] In an alternative embodiment of the present invention, at the base or bottom of the burner body (11) exactly below the lowest part of the main door outlets (20) placed on the outer face of the battlement wall (26), an air ring (36) can be placed, which (as seen in figures 6, 7) allows the admission of an extra mass of secondary air in the direction of the flame dart obtained by the doors (20, 30), since the flame dart tends to drag the secondary air towards its surroundings. In this way, given the limit effect of the superficial layer, the dart, emitted by the referred doors (20, 30), will tend to drag the secondary air that leaves the base or the lower part of the burner (11). Said alternative realization is desirable when, for design reasons, the volcano (28), the grill (27) or as a whole the heating surface (“cook top”) or lid (19) have a burner body with a larger diameter than that obtained by the preferred embodiment, in order to be able to “increase” the base of the burner, the air ring (36) can be used which allows the supply of “extra” secondary air in the direction of the doors (20, 30 ), thus contributing to a better combustion of the burner (25). The alternative realization currently discussed may also be desirable when, for design reasons, the cook top or lid (19) is submerged, this because the said lid (19) has very high walls on its periphery, which causes some difficulty obtaining a mass flow of secondary air in the direction of the flames; similarly, the alternative realization under discussion is desirable when very large utensils are placed on the grid (27); or in another case, when the grid design is such
    15/15 which prevents or obstructs the mass flow of secondary air in the direction of the burner flame darts (25) to a high degree; however, in both cases it is observed that the constant is a restriction of the mass flow of secondary air in the direction of the burner flame darts (25). In this regard, the air ring (36) works well for the present invention, knowing that when the flame darts do not contain enough secondary air surrounding the dart, the flame will tend to seek secondary air, which then causes detachment of the flame dart of the burner body (25), which can cause a leakage of the air-fuel mixture, a dangerous accumulation of the air-fuel mixture between the lid (19) and the underside of the cooking utensil or in a better case combustion is conducted away from the burner body. This phenomenon is known in the field as flame fluctuation, since when observing how flame darts deform, they appear to float due to the complete detachment of the burner body (25) in search of secondary air that they need to obtain a flame. Now then, the aforementioned air ring (36), thanks to the surface layer limit effect, helps to prevent, in a high degree, the phenomenon of flaming dart fluctuation, leaving the secondary air supply that is close to the bottom of the burner (25) in addition to what is found at the level of the cover, in this way, figures 6, 7 serve as a visual support for the understanding of the referred mass flow of secondary air in the direction of the darts or base of the burner flame ( 25). [0035] The present invention having been described in sufficient detail, presents an inventive degree, the novelty and industrial application being obvious, and considering that a specialist in the subject could infer changes to the burner object of the present invention described here, where said changes would be included in the scope of protection of the attached claims.
    1/5
    权利要求:
    Claims (20)
    [1]
    1. Burner for stoves and cooking surfaces (cooktop) characterized by the fact that it comprises:
    - a mixing tube that allows the mixing of a combustible gas with air;
    - a pre-mixing chamber that receives the mixture from the mixing tube, the pre-mixing chamber mixes the combustible gas with the air;
    - an inner crown that forms a barrier between the premix chamber and a mixing chamber, the mixing chamber formed by an outer wall of the inner crown, an inner face of a wall opposite the outer wall by the upper face of the burner a gas;
    - a battled wall along the length of the periphery of the burner, the wall comprising:
    - a plurality of first segments with a first thickness and at least one segment with a second thickness greater than the first thickness, the second segment allows a lid to be placed on the wall with battlements, thus covering the mixing tube, the mixing chamber premix, the inner crown and the mixing chamber, and
    - a plurality of main doors that are constant for a certain length of said main doors from the inside towards the outside of the battlements wall, and close to the outside of the battlements wall, the height of the door being reduced at an angle The;
    - at least one secondary door smaller in size than the main doors, where at least one secondary door has a change of direction such that the height of at least one secondary door is reduced from the inside towards the outside from the battlements wall according to an angle β until the height of the door reaches a constant height close to the outside of the wall; and
    - at least two tertiary doors for each first and second segment in the shape of a half cane, the diameter of the half cane being equal to the width and depth of said tertiary door, where said tertiary doors are smaller in size than at least one secondary door .
    [2]
    2/5
    2. Burner according to claim 1, characterized by the fact that it comprises some feet that support the burner on the face of a stove lid, providing a space between said burner and the added face, thus allowing the free flow of air.
    [3]
    3. Burner according to claim 1, characterized in that the internal crown has a height that is greater than the pre-mixing chamber and the mixing chamber, reducing the distance between the base of the pre-mixing chamber and a face In this way, the internal crown doses a mass flow of the mixture towards the mixing chamber.
    [4]
    4. Burner according to claim 1, characterized in that the segments are separated from each other by a main door or a secondary door.
    [5]
    5. Burner according to claim 1, characterized by the fact that the first thickness varies between approximately 5 mm and 8 mm, and the fact that a second thickness varies between approximately 8 mm and 10 mm, allowing said second thickness to project in relative to the rest of the battlements wall, in such a way that the lid is adjusted over the battlements wall and presents a combination according to the battlements wall.
    [6]
    6. Burner according to claim 1, characterized by the fact that the diameter of the half cane of the tertiary doors varies between approximately 0.8 mm and 3 mm and that the half cane has a cross section selected from straight, curved, square , rectangular or oval.
    [7]
    7. Burner according to claim 1, characterized in that the angle β varies between 45 ° and 85 °, where the height of the constant part of the secondary door is between approximately 1 mm and 2 mm in height and where the length of the constant part of the secondary door is not greater than 75% of the total length of said secondary door.
    [8]
    8. Burner according to claim 7, characterized by the fact that the flow of the mixture that passes through an external part of the secondary door is broken against a cover frame, anchoring the flame dart provided by the secondary door by creating an area of turbulence under said frame.
    3/5
    [9]
    9. Burner according to claim 1, characterized by the fact that the constant length of the main door is approximately 50% to 75% of the total length of the main door, where α varies between 45 ° and 85 °, where a mass flow that if it moves through said main door it loses energy.
    [10]
    10. Burner according to claim 9, characterized by the fact that a mass flow that passes through an external part of the secondary door is broken against a cover frame, anchoring the flame dart provided by the main door by creating an area of turbulence under said frame.
    [11]
    11. Burner according to claim 1, characterized by the fact that under the doors placed on the battlements wall an air ring is placed that drags the secondary air that leaves the lower part of the burner.
    [12]
    12. Gas burner characterized by the fact that it comprises:
    - a section for mixing fuel gas with air;
    - a lid that closes the mixing section; and
    - a battlements wall comprising:
    - a plurality of first segments with a first thickness and at least a second segment with a second thickness greater than the first thickness, the second segment allows the lid to be placed on the wall, and
    - a plurality of main doors that are constant for a certain length of said main doors from the inside towards the outside of the battlements wall, and close to the outside of the battlements wall, the height of the door is reduced by an angle to ;
    - at least one secondary door with a size larger than that of the main doors, where at least one secondary door has a change of direction in such a way that the height of at least one secondary door is reduced from the inside towards the outer part of the wall with battlements according to an angle β until the height of the door reaches a constant height close to the outer part of the wall; and
    - at least two tertiary doors for each first and second segment in a half-cane format, the diameter of the half-cane being equal to the width and
    4/5 depth of said tertiary door, where said tertiary doors are smaller in size than that of at least one secondary door.
    [13]
    13. Burner according to claim 12, characterized in that the inner crown has a height greater than the premix chamber and the mixing chamber, reducing the distance between the base of the premix chamber and an internal face of the cover, such that the inner crown doses a mass flow of the mixture towards the mixing chamber.
    [14]
    14. Burner according to claim 12, characterized in that the first thickness varies between approximately 5 mm and 8 mm and that the second thickness varies between approximately 8 mm and 10 mm, allowing said second thickness to project in relation to to the rest of the battlements wall, in such a way that the lid is adjusted over the battlements wall and presents a set according to the battlements wall.
    [15]
    15. Burner according to claim 12, characterized by the fact that the diameter of the half cane of the tertiary doors varies between approximately 0.8 mm and 3 mm and the fact that the half cane has a cross section selected from straight, curved, square, rectangular or oval.
    [16]
    16. Burner according to claim 12, characterized in that the angle β varies between 45 ° and 85 °, where the height of the constant part of the secondary door is between approximately 1 mm and 2 mm in height and where the length of the constant part of the secondary door is not greater than 75% of the total length of said secondary door and where the mass flow that passes through an external part of the secondary door is broken against a frame of the cover, anchoring the flame dart provided by the secondary door by creation of an area of turbulence under the said frame.
    [17]
    17. Burner according to claim 12, characterized in that the constant length of the main door is approximately 50% to 75% of the total length of the main door, where α varies between 45 ° and 85 °, where a mass flow that moves through said main door loses energy and where the mass flow that passes through an external part of the main door is broken against a
    5/5 cover frame, anchoring the flame dart provided by the main door by creating an area of turbulence under said frame.
    [18]
    18. Burner according to claim 12, characterized by the fact that an air ring is placed under the doors placed on the battlements wall, which drags the secondary air that leaves the lower part of the burner.
    [19]
    19. Stove, cooking surface (cooktop) comprising the burner as defined in any of the preceding claims, characterized by the fact that it additionally comprises a grill placed on the burner, and by the fact that at least one secondary door emits a flame dart that it has a size larger than that of a main door flame dart, in such a way that the secondary door flame dart is not broken against the grid.
    [20]
    20. Stove, cooking surface according to claim 19, characterized in that the design of the grill determines the number of secondary doors found in the wall with battlements of the burner.
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    同族专利:
    公开号 | 公开日
    CA2891247A1|2015-11-28|
    US20150345800A1|2015-12-03|
    MX2014006384A|2015-11-30|
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    US5899681A|1997-12-05|1999-05-04|General Electric Company|Atmospheric gas burner assembly for improved flame retention and stability|
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    WO2009078647A2|2007-12-14|2009-06-25|Lg Electronics Inc.|A top-burner and cooker comprising the same|
    EP2230451B1|2009-03-19|2016-11-09|Electrolux Home Products Corporation N.V.|Gas burner|
    US20110129783A1|2009-12-01|2011-06-02|Uwe Harneit|Burner with flame ring stabilization chamber|DE102012206507A1|2012-04-20|2013-10-24|BSH Bosch und Siemens Hausgeräte GmbH|Burner for a gas-fired cooking appliance|
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    US9541294B2|2013-08-06|2017-01-10|Whirlpool Corporation|Inner swirling flame gas burner|
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    US10837651B2|2015-09-24|2020-11-17|Whirlpool Corporation|Oven cavity connector for operating power accessory trays for cooking appliance|
    GB2544069A|2015-11-04|2017-05-10|Aga Rangemaster Ltd|Cooking hob gas burner|
    CN105972594B|2016-06-24|2018-03-02|中山市华创燃具制造有限公司|A kind of polycyclic high-power burner of anti-dry|
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    CN106678797B|2016-12-15|2019-10-01|广东美的厨房电器制造有限公司|Burner and gas cooker|
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    CN108361698A|2018-01-28|2018-08-03|昆山富凌能源利用有限公司|A kind of high-efficiency combustion furnace core|
    US11085645B2|2018-05-31|2021-08-10|Haier Us Appliance Solutions, Inc.|Eductor for a gas cooktop appliance|
    US10627116B2|2018-06-26|2020-04-21|Whirlpool Corporation|Ventilation system for cooking appliance|
    US10619862B2|2018-06-28|2020-04-14|Whirlpool Corporation|Frontal cooling towers for a ventilation system of a cooking appliance|
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    CN111351071A|2020-03-09|2020-06-30|嵊州市圣华智控科技有限公司|Ignition control device with function of rapidly cooling stove frame|
    CN112856411A|2021-01-11|2021-05-28|宁波方太厨具有限公司|Injection structure and combustor comprising same|
    法律状态:
    2018-02-06| B03A| Publication of an application: publication of a patent application or of a certificate of addition of invention|
    2018-06-12| B11A| Dismissal acc. art.33 of ipl - examination not requested within 36 months of filing|
    2018-08-28| B11Y| Definitive dismissal acc. article 33 of ipl - extension of time limit for request of examination expired|
    优先权:
    申请号 | 申请日 | 专利标题
    MX2014006384A|MX2014006384A|2014-05-28|2014-05-28|Low cost burner.|
    MXMX/A/2014/006384|2014-05-28|
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