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US20150345800A1 - Low cost burner - Google Patents

Low cost burner Download PDF

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Publication number
US20150345800A1
US20150345800A1 US14/723,878 US201514723878A US2015345800A1 US 20150345800 A1 US20150345800 A1 US 20150345800A1 US 201514723878 A US201514723878 A US 201514723878A US 2015345800 A1 US2015345800 A1 US 2015345800A1
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US
United States
Prior art keywords
porthole
burner
portholes
wall
main
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US14/723,878
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English (en)
Inventor
Roberto Cabrera Botello
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mabe SA de CV
Original Assignee
Mabe SA de CV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mabe SA de CV filed Critical Mabe SA de CV
Assigned to MABE, S.A. DE C.V. reassignment MABE, S.A. DE C.V. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: CABRERA BOTELLO, ROBERTO
Publication of US20150345800A1 publication Critical patent/US20150345800A1/en
Abandoned legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C3/00—Stoves or ranges for gaseous fuels
    • F24C3/08—Arrangement or mounting of burners
    • F24C3/085—Arrangement or mounting of burners on ranges
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/02—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone
    • F23D14/04—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone induction type, e.g. Bunsen burner
    • F23D14/06—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone induction type, e.g. Bunsen burner with radial outlets at the burner head
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46—Details
    • F23D14/62—Mixing devices; Mixing tubes
    • F23D14/64—Mixing devices; Mixing tubes with injectors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2203/00—Gaseous fuel burners
    • F23D2203/007—Mixing tubes, air supply regulation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2900/00—Special features of, or arrangements for burners using fluid fuels or solid fuels suspended in a carrier gas
    • F23D2900/00003—Fuel or fuel-air mixtures flow distribution devices upstream of the outlet

Definitions

  • Present invention lies in the field of gas burners, particularly burners used in household appliance equipment, such as stoves, kitchens or cooking surfaces.
  • an atmospheric gas burner which has a primary air pre-mixer, with a ring burner which has exit gas ducts and a cover for the burner, designed should it be appropriate as a single piece with the ring, as a solution proposed for atmospheric burners in particular as the NO x content in the burn gas which is produced, as well as the CO content are both considerably reduced, and particularly within a very broad adjustment range between the open and closed positions.
  • the above is achieved thanks to the central axis of the exit ducts for the gas have a 0° deviation angle in regards to an assigned radius to the respective exit opening.
  • none of the prior burners possesses at least two air-combustible mixture sections which would allow the adequate mixing or combining of the air with the combustible, also the referred to mixture sections allow for the creation of a desirable mass flow towards the portholes in order that the speed of the flow of the mixture be such that it avoids the detaching of the flame, the dart remaining anchored to the burner furthermore encouraging an efficient combustion; also none of the prior documents references a particular design for the portholes which changes the direction of the mass flow of the air-combustible mixture, decreasing the speed of the referred to mass flow within the porthole, in addition to strategically directing it towards the utensils to be heated which are set on the burner; thereby guaranteeing correct anchoring of the flame dart to the body of the burner as well as optima combustion.
  • One aspect of present invention may be to provide a burner with at least two mixture sections, a pre-mixing area precisely at the end of the Venturi tube which helps in the mixing of the air-combustible which has been dragged by means of the Venturi tube, also said pre-mixing chamber helps to uniformly dosage the determined mass flow to the mixture chamber which surrounds the pre-mixture chamber, in this second chamber the possible flow variations which could occur when functioning as a buffer area are homogenized, helps continue the air-combustible mixture towards the porthole section, with such luck that the speed of the liquid within the portholes be uniform and within a determined parameter which avoids flame detachment.
  • Another aspect of the present invention may be constituted by providing a burner which on its main portholes contain a change of direction which allow for the decreasing and controlling of the mass flow of the air-combustible mixture which flows within this in addition to strategically directing the flame dart, avoiding the detachment of flame and thus favoring a correct as well as an efficient combustion, in addition to helping achieve a better contact of the flame darts with the utensils to be heated which are set over the burner.
  • Another aspect of present invention may be to provide a burner with a peculiar design for the cover lid of the burner which allows interacting with the novel porthole design, helping to correctly anchor the flame darts to the body of the burner.
  • Another aspect of the present invention may be to provide a burner with good energy efficiency, as well as low carbon monoxide levels, be easy to manufacture and have a low cost.
  • Yet another aspect of the present invention may be to provide the burner with at least one air ring on the lower part of the burner, precisely under the porthole for improving the secondary air mass flow towards the base of the flames.
  • Present invention lies in the field of gas burners, particularly Bunsen burners used in household appliance equipment, such as stoves, kitchens or cooking surfaces; if there is a large variety of these burners both in the marketplace as well as in the state of the art, these are quite difficult to conceive and put into practice, given that they require extensive laboratory tests as well as advanced knowledge in the areas of combustion, fluids, heat transfer and mechanics among others; having a burner which works is an art in itself, and even more difficult is making a burner which functions in an efficient manner, and even further difficult is achieving all this at a low cost, as this implies advanced knowledge of manufacturing processes.
  • the burner of present invention has been particularly difficult to conceive, put into practice and commercialize, as it has been optimized in all of its aspects, as it renders both good energy combustion efficiency, it is easy to manufacture, the construction materials have been optimized to achieve a burner with low cost materials, in addition to being visually attractive.
  • the burner object of present invention is formed on a base of some metallic material preferably aluminum, or with an alloy which contains aluminum, the body of the burner is achieved by injection or forging; the cover lid by die cutting or casting iron, forging, sintering, among others, which preferably is manufactured with steel, the burner does not have any moving parts, nor does it require another assembly other than the cover lid which is only set on the peripheral crenellated wall of the cylindrical wall of the portholes.
  • an inlet is set through which the combustible being expulsed is allowed out, the inlet is directed towards a Venturi tube set on the lower central part of the burner, the referred to Venturi tube drags the primary air found surrounding this and suctions it towards the inside part of the tube to lead in a fluid manner, the primary air which has been dragged by the combustible towards the pre-mixing chamber which helps mix the air-combustible which has been dragged by means of the Venturi tube.
  • Said pre-mixing chamber also helps to uniformly dosage a determined mass flow to the mixture chamber which surrounds the pre-mixture chamber.
  • the possible flow variations which could occur upon homogenizing the volume of the air-combustible mixture before entering the portholes become uniform, knowing that a type of peripheral ring is formed, which homogenously distributes the air gas mixture to the portholes, it also regulates the energy of the fluid of said air-combustible mixture, thus homogenously dosing a mass flow towards the portholes which helps to continue with the mixing of the air-combustible, dosing the mixture of the air-combustible towards the porthole section, with such luck that the speed of the fluid within the portholes be uniform and within a determined parameter which avoids flame detachment;
  • the main portholes on their part are set with a peculiar design, knowing that the referred to portholes change direction of the mass flow of the air-combustible mixture which emanates from the mixture chamber which forces a decrease in the speed of the referred to mass flow within the porthole, in addition to strategically directing it towards the utensils to be heated set on the burner;
  • FIG. 1 shows an isometric view of the burner set over a volcano with a grill.
  • FIG. 2 is an exploded view of the burner assembly.
  • FIG. 3 a is an isometric upper view of the body of the burner.
  • FIG. 3 b is a lower conventional perspective view with the burner body cut by one of its secants.
  • FIG. 4 shows a cross cut of the assembly of the burner in which the air flows, combustible and air-combustible mixture can be seen.
  • FIG. 5 shows an isometric view of the body of the burner, showing in detail the crenellated wall, the three types of portholes as well as how they are set over the referred to crenellated wall.
  • FIG. 6 is a cross cut of the secondary porthole, where its shape can be appreciated, as well as the secondary air flows in addition to the air-combustible mixture.
  • FIG. 7 is a cross cut of the main porthole where its shape can be appreciated, as well as the secondary air flows in addition to the air-combustible mixture.
  • the term “approximately” provides an additional determined range.
  • the term is defined in the following manner: the additional range set by the term is approximately ⁇ 10%. By way of example, but not in a limitative way, if the term reads “approximately 8 cm”, the exact range lies within 7.2 to 8.8 millimeters.
  • FIG. 1 illustrates the burner 25 object of present invention, set over a surface or cover 19
  • the referred to cover 19 preferably comprises a volcano 28 which is understood as a truncated cone protuberance in a volcano manner over which the burner 25 is placed
  • the cover 19 can be completely smooth, or lacking volcanoes; given this the burner 25 is placed flush in regards to the cover 19 ; in another alternative embodiment the cover 19 can have crammed recesses in truncated conical shape which can house the burner 25 .
  • a grill 27 is placed, which comprises a series of bars which extend over the burner 25 and which help support the kitchen utensils to be heated; the distance between the grill 27 to the burner 25 will have to be determined experimentally in addition to complying with the official requirements for each country, which obviously will affect their design.
  • the burner 25 of present invention comprises a series of secondary portholes 30 with a reduced dart which allows for the transfer of the flame between portholes ( 20 , 30 , 40 ) without excessively heating the bars of the grill 27 which helps save combustible as well as improving the combustion, given that without these considerations, the flame dart would be cast on the lower part of the bar of the grill 27 overheating the latter in addition to obtaining adverse results for the combustion given the obstruction, which decreases the efficiency of the burner.
  • FIG. 2 shows us an exploded view of the burner 25 ; and FIG. 4 shows us an isometric cross cutoff of the burner 25 assembly; both figures are useful for describing the assembly components.
  • the nozzle 14 can be seen which on its lower end is coupled to the tube 14 which transports the combustible.
  • the nozzle 14 on its outer periphery comprises a rope on which a mini-connector 15 is coiled, the mini-connector 15 and nozzle 14 assembly is fastened onto the lower part of the support 16 , thanks to the referred to support 16 comprising a hole in the lower part through which the mini-connector 15 and nozzle 14 assembly is introduced, to later have a nut coiled over a mini connector 15 ; this assembly is coupled to the lower face of the volcano 28 by means of some screws or another fastening means 17 .
  • the volcano 28 on its upper face comprising a hole at the center of it through which the Venturi tube 12 of the burner 25 is introduced, which is concentrically aligned with the nozzle 14 leaving a determined height between the referred to nozzle 14 and the lower part of the Venturi tube 12 which allows aspirating or dragging the primary air, once combustible has been made to pass through the nozzle 14 , given the Venturi effect caused there.
  • the lower face of the burner 25 is set with some feet 31 which lend the burner 25 support over the upper face of the volcano 28 , allowing for the creation of a gap or space between the lower face of the burner 25 and the upper face of the volcano 28 , which allows for free air flow, which partly aids in cooling the base of the burner 25 as well as being able to supply air in a uniform manner to the base of the burner 37 .
  • the burner 25 is also set with a spark plug 22 set on a particular point of its periphery, with such luck that the burner 25 has been provided with a grommet 38 which is to house the spark plug 22 ; the referred to spark plug 22 is fastened in place by means of a safety 38 and support 41 in “U” shape; the complete burner 25 assembly discussed above is crowned with the cover lid 10 , which itself is placed only on the crenellated wall or porthole wall 26 .
  • FIGS. 3 a , 3 b and 4 which illustrate the body 11 of the burner 25 ;
  • FIG. 3 a is an isometric upper view of the referred to body 11 ; on its part FIG. 3 b is a lower isometric view with the burner body cut on the crenellated wall 26 which allows us to see the different portholes ( 20 , 40 );
  • FIG. 4 shows an isometric cross cut of the assembly of the burner in which the air flows, combustible and air-combustible mixture can be seen.
  • the inner crown 35 is found in ring-like shape, which protrudes cylindrically over the base of the pre-mixing chamber 23 .
  • the referred to inner crown 35 decreases the distance or gap between the base of the pre-mixture chamber 23 and the lower face of the cover lid 10 .
  • the referred to inner crown 35 helps dosing the mass flow of the air-combustible mixture towards the mixture chamber 24 ; knowing that once the air-combustible is pre-mixed in the pre-mixture chamber 23 , air-combustible the pre-mixture has to pass between the upper face of the inner crown 35 and the lower face of the cover lid 10 , in said narrowness the speed of the mass flow of the pre-mixture increases, which causes the referred to pre-mixture mass flow arrive at the mixture chamber 24 with a desirable speed and in a uniform manner.
  • the referred to mixture chamber 24 is formed on its lower part by the upper exposed face of said mixture chamber 24 , one side is formed by the outer wall of the inner crown 35 , the remaining side formed by the inner face of the crenellated wall 26 .
  • This mixture chamber 24 encourages the mixing on the air-combustible and also functions as a uniform area for the air-combustible mixture in a reservoir-like fashion; similarly, another function is that of homogenizing the speed and pressure of the mass flow of the air-combustible mixture prior to entering the portholes, knowing that: it creates a type of periphery ring which itself distributes uniformly the air gas mixture towards the portholes ( 20 , 30 , 40 ).
  • the mixture chamber 24 also regulates the flow energy of said air-combustible mixture, through which it obtains a desirable mass flow speed of the air-combustible mixture towards the portholes ( 20 , 30 , 40 ).
  • FIGS. 5 , 6 , 7 are useful to be able to see the porthole shapes ( 20 , 30 , 40 ); for its part FIG. 5 is a segment in isometric of the body of the burner 11 , in which the crenellated wall 26 can be seen which surrounds the periphery of the body of the burner 11 , it is over the referred to crenellated wall 46 that the three different types of portholes are formed, which the burner 25 object of present invention comprises; it should be highlighted at this point that the crenellated wall 26 can comprise two thicknesses measured from the inner face towards the outer face of the referred to crenellated wall 26 exactly at the sections of crenellated wall 26 which house the tertiary portholes 40 and which are separated from each other by a main porthole 20 or by a secondary porthole 30 , such as can be seen in FIG.
  • the first thickness called “e 1 ” which has a preferable width which is used in the large majority of the sections which form the crenellated wall 26 ; said thickness varies between approximately 5 mm to 8 mm; the second thickness called “e 2 ” is used in a sporadic manner over the periphery which runs the crenellated wall 26 , said thickness varies between approximately 8 mm to 10 mm.
  • the crenellated wall 26 is composed of the referred to sections which house the tertiary portholes 40 , in this highly peculiar design for the crenellated wall 26 object of present invention at least two tertiary portholes 40 per segment are required, having the possibility of having more than two in an alternative embodiment of the present invention.
  • the referred to tertiary portholes in a preferred embodiment have a “half cane” shape, which is set over the upper face of a determined segment of the crenellated wall 26 , where the diameter of the half cane is equal to the width and depth of the porthole, which varies between approximately 0.8 mm to 3 mm.
  • the referred to tertiary portholes 40 in half cane have a straight transversal section thus allowing for the passage of the air-combustible mixture emanating from the mixture chamber 24 , without any greater restriction than that set by its shape as well as its location.
  • the half cane shape can be a trapezoidal, square, rectangular, oval or almost any other type of shape section channel, these portholes conserve this porthole area which itself is very similar to the obtained in the preferred embodiment (half cane).
  • the secondary portholes 30 which are used sporadically over the crenellated wall 26 such as can be seen in FIGS.
  • the secondary portholes 30 which have a smaller size than the main portholes 20 but are larger than the tertiary portholes 40 follow the same shape than that of the grill 27 , so that its location within the crenellated wall 26 will completely depend on the design of the grill 27 which is set on the burner 25 .
  • having a series of secondary portholes 30 allows for energy savings knowing that the referred to secondary portholes 30 will serve to create transfer flame darts, that is the being able to transfer the flame form a tertiary porthole 40 in a given segment of the crenellated wall 26 to another tertiary porthole 40 located in an adjacent segment of the crenellated wall 26 , thereby allowing for correct transfer of the flame over the outer periphery of the crenellated wall 26 .
  • the secondary porthole 30 emits a smaller sized dart which is not collapsible with the finger or part of the grill 27 which is found set over the burner 25 , with such luck that the design of the grill 27 will determine the number of secondary portholes 30 which are located within the crenellated wall 26 .
  • this illustrates a cross cut of the referred to secondary porthole 30 ; here we can see that unlike the tertiary portholes 40 , the secondary porthole 30 is not straight, but rather it has a change of direction, which causes the mass flow of air-combustion mixture which emanates from the mixture chamber 24 and which moves within the referred to secondary porthole 30 , in this way the height of the porthole decreases from the inside towards the outside of the crenellated wall 26 , following a ⁇ angle which varies between approximately 45° to 85°, as long as the porthole height has a constant determined height which varies between approximately 1 mm to 2 mm and does not exceed 75% of the total length of the secondary porthole 30 , which causes the air-combustible mixture to increase its speed but only allows the passage of a determined mass flow with a certain speed and direction, the latter being specifically horizontal.
  • main portholes 20 whose cross cut is illustrated in FIG. 7 ; the referred to main portholes 20 have a somewhat inverse shape to that outlined of the secondary portholes 30 where the height of the main porthole 20 remains constant for a good section of the length preferably from approximately 50% to 75% of the length of the main porthole 20 , thus for the remaining length the heights is decreased at an ⁇ angle, which varies between approximately 45° to 85°, which causes a brusque change of direction of the mass flow of air-combustible which travels from the main porthole 20 emanating from the mixture chamber 24 , said radical change of direction causes the mass flow which travels from the main porthole 20 to lose energy; the change of direction also directs the flame towards the utensils to be heated set over the grill 27 and the burner 25 , it can also be noted that the air-combustible mass which moves through the upper part of the main porthole 20 exactly upon exiting the referred to main porthole 20 collapses with the lower face of the bezel 33
  • the shape of the porthole in a burner is such that it allows good exit speed which allows the flame dart to be cast upon the surface to be heated, seeing that having high speed ranges would encourage flame detachment, or conversely, having a slow speed for the flame would cause poor combustion as well as a low transfer level of caloric energy to the utensils to be heated. Therefore, the equilibrium achieved by such an ingenious shape of portholes ( 20 , 30 , 40 ) proposed, knowing that variables in direction and speed of mass flow of the air-combustible mixture which moves through the referred to portholes ( 20 , 30 , 40 ); thus achieving an efficient combustion, avoiding the much unwanted flame detachment in a burner which has ease of manufacture and therefore low cost.
  • an air ring 36 can be placed, which (such as can be seen in FIGS. 6 , 7 ) allows admitting an extra mass of secondary air towards the flame dart obtained by the portholes 20 , 30 since the flame dart tends to drag the secondary air towards its surroundings. Thereby given the superficial cap limit effect the dart, emitted by the referred to portholes 20 , 30 will tend to drag the secondary air which emanates from the base or lower part of the burner 11 .
  • the referred to alternative embodiment is desirable when for design reasons the volcano 28 , the grill 27 or jointly as a set the cook top or cover lid 19 have a burner body with a greater diameter than that obtained through the preferred embodiment, thus in order to be able to “enlarge” the base of the burner, the air ring 36 can be used which allows supplying “extra” secondary air towards the portholes 20 , 30 thus contributing a better combustion for the burner 25 .
  • the alternative embodiment currently discussed can also be desirable when for design reasons the cook top or cover lid 19 ends up sunken or submerged, this because the referred to cover lid 19 has very high walls on its periphery, which causes certain difficulty in obtaining a mass flow of secondary air towards the dart flames; similarly, the alternative embodiment under discussion is desirable when very large utensils are placed over the grill 27 ; or in another case, when the grill design is such that it hinders or obstructs the mass flow of secondary air towards the flame darts of the burner 25 to a great degree; but in either case, it is noted that the constant is a restriction of mass flow of secondary air towards the flame darts of the burner 25 .
  • the air ring 36 serves present invention well knowing that when the flame darts do not have sufficient secondary air surrounding the dart, the flame will tend to seek secondary air, which then causes the detachment of flame dart from the body of the burner 25 , same which can cause a leak of the air-combustible mixture, a dangerous accumulation of air-combustible mixture between the cover lid 19 and the lower face of the cooking utensil or in a better case the combustion is carried out far away from the body of the burner.
  • This phenomenon is known in the field as flame flotation, given that upon seeing how the flame darts deform, these appear to float upon completely detaching themselves from the body of the burner 25 in search of secondary air which they require to achieve a flame.
  • FIGS. 6 , 7 serve as visual support to help understand the referred to mass flow of secondary air towards the darts or flame base of the burner 25 .

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gas Burners (AREA)
US14/723,878 2014-05-28 2015-05-28 Low cost burner Abandoned US20150345800A1 (en)

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MXMX/A/2014/006384 2014-05-28
MX2014006384A MX383153B (es) 2014-05-28 2014-05-28 Quemador de bajo costo.

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BR (1) BR102015012467A2 (es)
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MX (1) MX383153B (es)

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US20150107577A1 (en) * 2013-10-18 2015-04-23 Lg Electronics Inc. Burner
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GB2544069A (en) * 2015-11-04 2017-05-10 Aga Rangemaster Ltd Cooking hob gas burner
US20170370594A1 (en) * 2016-06-27 2017-12-28 Whirlpool Corporation High efficiency high power inner flame burner
USD835775S1 (en) 2015-09-17 2018-12-11 Whirlpool Corporation Gas burner
US10161665B2 (en) 2013-03-14 2018-12-25 Whirlpool Corporation Refrigerator cooling system having secondary cooling loop
US10317086B2 (en) * 2012-04-20 2019-06-11 BSH Hausgeräte GmbH Burner for a gas-heated cooking appliance
US10451290B2 (en) 2017-03-07 2019-10-22 Whirlpool Corporation Forced convection steam assembly
US20190368739A1 (en) * 2018-05-31 2019-12-05 Haier Us Appliance Solutions, Inc. Eductor for a gas cooktop appliance
US10551056B2 (en) 2017-02-23 2020-02-04 Whirlpool Corporation Burner base
US10619862B2 (en) 2018-06-28 2020-04-14 Whirlpool Corporation Frontal cooling towers for a ventilation system of a cooking appliance
US10627113B2 (en) 2016-12-29 2020-04-21 Whirlpool Corporation Distributed vertical flame burner
US10627116B2 (en) 2018-06-26 2020-04-21 Whirlpool Corporation Ventilation system for cooking appliance
US10660162B2 (en) 2017-03-16 2020-05-19 Whirlpool Corporation Power delivery system for an induction cooktop with multi-output inverters
CN111351071A (zh) * 2020-03-09 2020-06-30 嵊州市圣华智控科技有限公司 一种具有快速冷却灶架功能的点火控制装置
US10731851B2 (en) * 2013-08-06 2020-08-04 Whirlpool Corporation Inner swirling flame gas burner
US10837651B2 (en) 2015-09-24 2020-11-17 Whirlpool Corporation Oven cavity connector for operating power accessory trays for cooking appliance
US10837652B2 (en) 2018-07-18 2020-11-17 Whirlpool Corporation Appliance secondary door
CN112856411A (zh) * 2021-01-11 2021-05-28 宁波方太厨具有限公司 引射结构及包含其的燃烧器
US20210207799A1 (en) * 2020-01-02 2021-07-08 Samsung Electronics Co., Ltd. Gas burner device and cooking apparatus having the same
US11287138B2 (en) * 2018-12-10 2022-03-29 Bsh Home Appliances Corporation Cooking appliance with top breathing burner having bottom breathing assist through top sheet
US11777190B2 (en) 2015-12-29 2023-10-03 Whirlpool Corporation Appliance including an antenna using a portion of appliance as a ground plane

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CA2891247A1 (en) 2015-11-28

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