DESC:TECHNICAL FIELD
[0001] The present disclosure relates generally to the field of domestic cooking stoves for the combustion of fuel, for example, liquefied petroleum gas (hereinafter “LPG”), piped natural gas (hereinafter “PNG”), or other gaseous fuels like. Further, the present disclosure pertains to an energy-efficient domestic PNG cooking stove that facilitates higher thermal efficiency. More particularly, the present disclosure relates to a stove (hereinafter terms ‘cooking stove’, ‘energy-efficient stove’, ‘energy-efficient cooking stove’, ‘energy efficient domestic PNG cooking stove’ used interchangeably) that enables an efficient air-fuel mixture and a method therefore.

BACKGROUND
[0002] The following description includes information that may be useful in understanding the present disclosure. It is not an admission that any of the information provided herein is prior art or relevant to the presently disclosed disclosure, or that any publication specifically or implicitly referenced is prior art.
[0003] Generally, with the recent engineering and manufacturing developments, there have been advancements in the field of domestic cooking stoves for the combustion of fuel like PNG. The stove consists of a fuel nozzle or injector, mixing tube, burner top pan support, etc. are the major components. The fuel is injected at high velocity and low pressure from the nozzle into the mixing tube. The air is entrained inside the mixing tube and air-fuel mixing takes place. This mixture passes through the burner port area and combustion takes place.
[0004] The air entrainment inside the mixing tube is because of the pressure gradient and is called primary air, which normally accounts for approximately 50% of the air required for combustion. This forms the air and fuel (LPG, PNG, etc.) mixture, which is then ignited at the burner top where additional air, called secondary air, gets mixed into the flame. The addition of the secondary air provides the remainder of the air required for the optimum combustion of the air-fuel mixture. In such gas stoves, various design parameters such as primary air entrainment, port area and size of ports, design of drip tray and fuel jet, loading height (gap between burner top and vessel), or pan support design, or the like play an important role in its thermal efficiency. Further optimization of these design parameters with the help of extensive experimentation as well as numerical modeling needs to be taken care of while designing the PNG stove or its components, resulting in increased thermal efficiency.
[0005] Thus, there exists a dire need in the art, to provide a new, simple and compact energy-efficient domestic PNG cooking stove that can provide higher thermal or combustion efficiency than existing PNG or other modified LPG stoves which are used for cooking purpose.

OBJECTS OF THE DISCLOSURE
[0006] Some of the objects of the present disclosure, which at least one embodiment herein satisfies are as listed herein below.
[0007] It is an object of the present disclosure to provide a stove that enable an efficient air-fuel mixture and a method therefore.
[0008] It is another object of the present disclosure to provide an energy-efficient domestic PNG cooking stove that can provide higher thermal efficiency.
[0009] It is another object of the present disclosure to provide an energy-efficient domestic PNG cooking stove with multiple ports on a burner top for reducing secondary air opening.
[00010] It is another object of the present disclosure to provide an energy-efficient domestic PNG cooking stove with a mixing tube for reducing air-fuel mixture residence time.
[00011] It is yet another object of the present disclosure to provide an energy-efficient domestic PNG cooking stove with a pan support for better air movement and flame structure.
[00012] Various objects, features, aspects, and advantages of the inventive subject matter will become more apparent from the following detailed description of preferred embodiments, along with the accompanying drawing figures in which like numerals represent like components.

SUMMARY
[00013] Within the scope of this application, it is expressly envisaged that the various aspects, embodiments, examples, and alternatives set out in the preceding paragraphs, in the claims and/or in the following description and drawings, and in particular the individual features thereof, may be taken independently or in any combination. Features described in connection with one embodiment are applicable to all embodiments, unless such features are incompatible.
[00014] An aspect of the present disclosure pertains to a stove that enable an efficient air-fuel mixture. The cooking stove comprises a stove body or frame, one or more burner tops (hereinafter “burner tops”), one or more mixing tubes (hereinafter “mixing tubes”), and one or more pan supports (hereinafter “pan supports). The mixing tubes are connected to the one or more burner tops , wherein each of the one or more mixing tubes having a first end and a second end. The first end is connected to a gas inlet connected to a source of fuel and the second end is connected to an air-fuel mixture outlet 124. Further, the mixing tubes further having an air inlet opening to allow air to enter in the one or more mixing tubes and mix with a fuel received from the gas inlet to form an air-fuel mixture. The air-fuel mixture outlet is adapted to removably fit at a bottom portion of the one or more burner tops such that the air-fuel mixture outlet receives the air-fuel mixture through the one or more mixing tubes and provide the air-fuel mixture to the one or more burner tops for combustion .
[00015] Another aspect of the present disclosure pertains to a method for enabling an efficient air-fuel mixture. The method includes the steps of- connecting one or more mixing tubes with one or more burner tops, where each of the one or more mixing tubes having a first end and a second end, connecting the second end to a gas inlet connected to a source of fuel, connecting the second end to an air-fuel mixture outlet , providing an air inlet opening on the one or more mixing tubes, allows air to enter in the one or more mixing tubes and mix with a fuel received from the gas inlet to form an air-fuel mixture, and fitting removably the air-fuel mixture outlet at a bottom portion of the one or more burner tops such that the air-fuel mixture outlet receives the air-fuel mixture through the one or more mixing tubes and provide the air-fuel mixture to the one or more burner tops for combustion.
[00016] Various objects, features, aspects, and advantages of the inventive subject matter will become more apparent from the following detailed description of preferred embodiments, along with the accompanying drawing figures in which like numerals represent like components.

BRIEF DESCRIPTION OF THE DRAWINGS
[00017] The accompanying drawings, which are incorporated herein, and constitute a part of this disclosure, illustrate exemplary embodiments of the disclosed methods and systems in which like reference numerals refer to the same parts throughout the different drawings. Components in the drawings are not necessarily to scale, emphasis instead being placed upon clearly illustrating the principles of the present disclosure. Some drawings may indicate the components using block diagrams and may not represent the internal circuitry of each component. It will be appreciated by those skilled in the art that disclosure of such drawings includes the disclosure of electrical components, electronic components or circuitry commonly used to implement such components.
[00018] In the figures, similar components and/or features may have the same reference label. Further, various components of the same type may be distinguished by following the reference label with a second label that distinguishes among the similar components. If only the first reference label is used in the specification, the description is applicable to any one of the similar components having the same first reference label irrespective of the second reference label.
[00019] FIG. 1 illustrates an exemplary perspective view of a stove that enable an efficient air-fuel mixture, in accordance with an embodiment of the present disclosure.
[00020] FIG. 2 illustrates an exemplary flow diagram for a method for enabling the efficient air-fuel mixture, in accordance with an embodiment of the present disclosure.
[00021] FIGs. 3(a-h) illustrate exemplary perspective view (a), a cross-sectional view (b), and exemplary views (c-h) of a burner top of the cooking stove, respectively, in accordance with an embodiment of the present disclosure.
[00022] FIGs. 4 (a-f) illustrate exemplary perspective views of a mixing tube of the cooking stove, in accordance with an exemplary embodiment of the present disclosure.
[00023] FIGs. 5 (a-d) illustrate exemplary perspective view, a cross-sectional view at AA (a), a front views (b, c), and a top view (d) of a pan support of the cooking stove, in accordance with an exemplary embodiment of the present disclosure.
[00024] FIGs. 6 (a-d) illustrates exemplary views of mixing tube (a), small burner top (b), big burner top (c), and leg (d) of the cooking stove, in accordance with an exemplary embodiment of the present disclosure.
[00025] Other objects, advantages, and novel features of the disclosure will become apparent from the following more detailed description of the present embodiment when taken in conjunction with the accompanying drawings.

DETAILED DESCRIPTION
[00026] In the following description, numerous specific details are set forth in order to provide a thorough understanding of embodiments of the present disclosure. It will be apparent to one skilled in the art that embodiments of the present disclosure may be practiced without some of these specific details.
[00027] If the specification states a component or feature “may”, “can”, “could”, or “might” be included or have a characteristic, that particular component or feature is not required to be included or have the characteristic.
[00028] As used in the description herein, the meaning of “a,” “an,” and “the” includes plural reference unless the context clearly dictates otherwise. Also, as used in the description herein, the meaning of “in” includes “in” and “on” unless the context clearly dictates otherwise.
[00029] Exemplary embodiments will now be described more fully hereinafter with reference to the accompanying drawings, in which exemplary embodiments are shown. This disclosure may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. These embodiments are provided so that this disclosure will be thorough and complete and will fully convey the scope of the disclosure to those of ordinary skill in the art. Moreover, all statements herein reciting embodiments of the disclosure, as well as specific examples thereof, are intended to encompass both structural and functional equivalents thereof. Additionally, it is intended that such equivalents include both currently known equivalents as well as equivalents developed in the future (i.e., any elements developed that perform the same function, regardless of structure).
[00030] It will be understood that, although the terms first, second, etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, without departing from the scope of example embodiments of the present disclosure. As used herein, the term “and/or,” includes any and all combinations of one or more of the associated listed items.
[00031] disclosuredisclosuredisclosure Reference numerals used in the below embodiments as below:
100- Domestic Piped Natural Gas (PNG) cooking stove
110- One or more burner tops / Burner top
110-1 Outer portion
110-1-1 Upper outer portion
110-1-2 Lower outer portion
110-2 Inner portion
110-3 Big burner top
110-4 Small burner top
112- Outer ports
114- At least a row of inner ports
116- Hollow disc
118- Base
120- Mixing tube
122- Gas inlet
124- Air-fuel mixture outlet
126- Air inlet
128- Slanted portion
130- One or more pan supports / Pan supports
132- Heat shield
134- Ring
136- At least three support structures/ Support structures
138- At least two fixing legs
140- Stove body
140-1- Glass top
140-2- Frame
140-3- One or more knobs
140-4- At least four legs
[00032] The following is a detailed description of embodiments of the disclosure depicted in the accompanying drawings. The embodiments are in such detail as to clearly communicate the disclosure. However, the amount of detail offered is not intended to limit the anticipated variations of embodiments; on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the present disclosure as defined by the appended claims.
[00033] Accordingly, the embodiments of the present disclosure disclose a cooking stove 100, and a method 200 for enabling an efficient air-fuel mixture.
[00034] Hereinafter, exemplary embodiments of the present disclosure will be described with reference to the accompanying drawings FIGs. 1-5.
[00035] FIG. 1 illustrates an exemplary perspective view 100 of a stove 100 that enable an efficient air-fuel mixture, in accordance with an embodiment of the present disclosure.
[00036] In an embodiment of the present disclosure, the stove 100 includes one or more burner tops 110 and one or more mixing tubes 120 operatively coupled to the burner tops 110. Each mixing tube 120 has a first end and a second end. The first end is a gas inlet 122 connected to a source of fuel. , and the second end connected to an air-fuel mixture outlet 124The mixing tube 120 further includes an air inlet opening 126 to allow air to enter into the mixing tube 120 and mix with fuel received from the gas inlet 122 to form an air-fuel mixture. The air-fuel mixture outlet 124 is adapted to removably fit at a bottom portion of the burner top 110 such that the air-fuel mixture outlet 124 receives the air-fuel mixture through the mixing tube 120 and provides the air-fuel mixture to the burner top 110 for combustion.
[00037] In an exemplary implementation of the embodiment, the burner tops 110 include at least one big burner top 110-3 and one small burner top 110-4. Each burner top comprises an outer portion 110-1 that encloses an inner portion 110-2. The outer portion 110-1 is inclined at a predefined angle relative to the horizontal surface of the stove 100, with the predefined angle ranging between 300 and 400. The air-fuel mixture outlet 124 engages both the outer portion 110-1 and the inner portion 110-2. The port diameter of the burner tops 110 ranges from 1.5 mm to 2.5 mm.
[00038] In the exemplary implementation of the embodiment, the burner top 110 may include an outer portion 110-1 enclosing an inner portion 110-2. The outer portion 110-1 may be inclined at a predefined angle from the horizontal surface of the stove 100. The air-fuel mixture outlet 124 may engage with both the outer portion 110-1 and the inner portion 110-2. Further, the outer portion 110-1 includes an upper outer portion 110-1-1 and a lower outer portion 110-1-2.
[00039] In the exemplary implementation of the embodiment, the EE PNG stove 100 further includes an outer portion 110-1 and an inner portion 110-2. The outer portion 110-1 is equipped with one or more outer ports 112, while the inner portion 110-2 contains one or more inner ports 114. The ports are arranged either in a row or in a concentric manner across the outer portion 110-1, the inner portion 110-2, the upper outer portion 110-1-1, and the lower outer portion 110-1-2. Specifically, for the big burner top 110-3, the inner portion 110-2 comprises 32 to 38 inner ports 114, the upper outer portion 110-1-1 comprises 32 to 38 outer ports 112, and the lower outer portion 110-1-2 comprises 70 to 80 outer ports 112. For the small burner top 110-4, the inner portion 110-2 comprises 28 to 34 inner ports 114, the upper outer portion 110-1-1 comprises 28 to 34 outer ports 112, and the lower outer portion 110-1-2 comprises 60 to 68 outer ports 112. Additionally, an air-fuel mixture is passes through the inner ports 114 and outer ports (112) to ensure proper functionality.
[00040] In the exemplary implementation of the embodiment, the air inlet opening 126 may be provided in proximity to the gas inlet 122. The second end of the mixing tube 120 may be connected to the air-fuel mixture outlet 124 through a joint, and the joint may include a slanted portion 128.
[00041] In the exemplary implementation of the embodiment, the stove 100 may further include a glass top 140-1 placed onto a frame 140-2 of a stove body 140. The frame 140-2 may include at least two legs 140-4 for supporting the stove body 140. The stove body 140 may include one or more knobs 140-3 for regulating the flow of fuel from the source of fuel into the mixing tubes 120 via the gas inlet.
[00042] In the exemplary implementation of the embodiment, the stove 100 may further include one or more pan supports 130 having a heat shield 132, a ring 134, at least three support structures 136, and at least two fixing legs 138. The fixing legs 138 may be adapted to engage with the glass top 140-1.
[00043] In an embodiment of the present disclosure, the energy-efficient domestic PNG cooking stove 100 includes one or more burner tops 110, one or more mixing tubes 120, one or more pan supports 130, and a stove body 140 having glass top 140-1 and, a frame 140-2. The stove body 140 of the domestic PNG cooking stove 100 may comprise a glass top 140-1 placed onto the frame 140-2 of the stove body 140. The frame 140-2 may also comprise at least four legs 140-4 for supporting the stove body 140. The stove body 140 may further comprise one or more knobs 140-3 for regulating the inflow of the piped natural gas and/or air into the one or more mixing tubes 120, via a gas inlet 122.
[00044] In an exemplary implementation of the embodiment, the one or more burner tops 110, the one or more mixing tubes 120, and the one or more pan supports 130 may be assembled together in such a way that the air-fuel mixture created in the one or more mixing tubes 120 comprises optimum combustion properties, and thus, the domestic PNG cooking stove 100 produces a flame structure with optimum flame temperature and better fuel burning or combustion rate.
[00045] In the exemplary implementation of the embodiment, the fuel may be the Piped Natural Gas (hereinafter “PNG”), or liquefied petroleum gas (hereinafter “LPG”).
[00046] FIG. 2 illustrates an exemplary flow diagram 200 for a method 200 for enabling the efficient air-fuel mixture, in accordance with an embodiment of the present disclosure.
[00047] In yet another embodiment of the present disclosure, the method for enabling an efficient air-fuel mixture is implemented. The method 200 includes the steps of- coupling one or more mixing tubes 120 to one or more burner tops 110, connecting the first end of each mixing tube 120 to a gas inlet 122 connecting the second end of each mixing tube 120 to an air-fuel mixture outlet 124, , provides an air inlet opening 126-1 on the mixing tubes 120, allows air to enter the mixing tubes 120 and mix with fuel to form an air-fuel mixture, and fit the air-fuel mixture outlet 124 at a bottom portion of the burner tops 110 to receive the air-fuel mixture and provide it to the burner tops 110 for combustion.
[00048] In an exemplary implementation of the embodiment, the method 200 may further include the steps of- enclosing the burner tops 110 include an outer portion 110-1 in an inner portion 110-2, wherein the outer portion 110-1 is inclined at a predefined angle from a horizontal surface of the stove (100), and the air-fuel mixture outlet 124 engages with the outer portion 110-1 and the inner portion 110-2. Further, the burner tops 110 include a hollow disc 116 provided at the base of each of the one or more burner tops 110 to reduce the entry of atmospheric air into the air-fuel mixture.
[00049] The method 200 further incorporates specific design features to enhance the efficiency of the air-fuel mixture. The burner tops 110 include an outer portion 110-1 that encloses an inner portion 110-2. The outer portion 110-1 is inclined at a predefined angle ranging between 30° to 40° from a horizontal surface of the stove 100. The inclination facilitates the engagement of the air-fuel mixture outlet 124 with both the outer portion 110-1 and the inner portion 110-2 of the burner tops 110, ensures efficient delivery of the air-fuel mixture for combustion. Additionally, each burner top 110 includes a hollow disc 116 located at its base. The hollow disc 116 is implemented to minimize the entry of atmospheric air into the air-fuel mixture, further enhances the combustion process by maintaining a controlled air-fuel ratio.
[00050] The air inlet opening 126 in the mixing tubes 120 ensures a consistent flow of air into the tubes, which is essential for forming a uniform air-fuel mixture. The coupling of the mixing tubes 120 with the burner tops 110 through the air-fuel mixture outlet 124 is achieved in a manner that allows easy removal and reattachment, facilitating maintenance and cleaning. The use of the hollow disc 116 at the base of each burner top 110 prevents excessive atmospheric air from diluting the air-fuel mixture, ensuring efficient combustion and reducing fuel wastage.The predefined angle of the outer portion 110-1 of the burner tops 110 is a critical feature that ensures optimal engagement with the air-fuel mixture outlet 124. This angle range of 30° to 40° is specifically selected to provide a balance between efficient mixing and effective delivery of the air-fuel mixture to the combustion zone. The structural design of the burner tops 110, including the inner portion 110-2 and the hollow disc 116, contributes to a stable flame and consistent heat output, makes the stove 100 suitable for various cooking applications.
[00051] The disclosed method 200 and associated components, includes the mixing tubes 120, burner tops 110, air inlet opening 126, gas inlet 122, air-fuel mixture outlet 124, and hollow disc 116, work in conjunction to provide an energy-efficient and user-friendly solution for cooking with piped natural gas. The integration of these features ensures reliable performance, ease of use, and minimal maintenance, makes the stove 100 an efficient choice for domestic and commercial cooking environments.
[00052] FIGs. 3(a-b) illustrate exemplary perspective views 300 a cross-sectional view of a burner top of the cooking stove 100, respectively, in accordance with an embodiment of the present disclosure.
[00053] Referring to FIGs. 3 (a-h), exemplary perspective view (a) and a cross-sectional view (b), and exemplary views (c-h) of a burner top 110 of the domestic PNG cooking stove 100 are illustrated, respectively, in accordance with an embodiment of the present disclosure.
[00054] In yet another embodiment of the present disclosure, the one or more burner tops 110 may comprise at least two rows of outer ports 112. The outer port 112 may be arranged in a concentric manner on an outer portion 110-1 of one or more burner tops 110. Further, outer portion 110-1 of the one or more burner tops 110 may be inclined at a predefined acute angle with the horizontal.
[00055] Further, a number of outer ports 112 in a row or concentric circle may be as per requirement for a desired piped natural gas flame speed. The one or more burner tops 110 may also comprise a hollow disc 116 at the base, such that a secondary air opening may be reduced to obtain the air-fuel mixture with desired thermal and combustion properties.
[00056] In an exemplary implementation of the embodiment, the one or more burner tops 110 may also comprise at least a row of inner ports 114 on an inner portion of the one or more burner tops 110.
[00057] In the exemplary implementation of the embodiment, the diameter of the outer ports 112 and/or the inner ports 114 may vary for the desired thermal and combustion efficiency of the domestic PNG cooking stove 100.
[00058] Referring to FIGs. 4(a-f), exemplary perspective views 400 of a mixing tube 120 of the domestic PNG cooking stove 100 are depicted, in accordance with an exemplary embodiment of the present disclosure.
[00059] In yet another embodiment of the present disclosure, one or more mixing tubes 120 may comprise a gas inlet 122, an air-fuel mixture outlet 124, and an air inlet 126.
[00060] In an exemplary implementation of the embodiment, the air inlet 126 may be the primary air opening with reduced dimensions than the existing mixing tubes available in the prior art. The gas inlet 122 and the air inlet 126 may further aid in reducing the air-fuel mixture residence time.
[00061] In the exemplary implementation of the embodiment, one or more mixing tubes 120 may comprise a slanted portion 128 at a joint of the air-fuel mixture outlet 124 the gas inlet 122, and the air inlet 126. The slanted portion 128 may aid in providing the required high quality and final mixing of the primary air and the PNG such that the thermal and combustion efficiency of the air-fuel mixture may be enhanced. Further, the slanted portion 128 may be for a portion of the one or more mixing tubes 120 cup section which may be redesigned especially for piped natural gas.
[00062] Referring to FIGs. 5(a-d), exemplary perspective view 500, a cross-sectional view at AA (a), a front views (b, c), and a top view (d) of pan support 130 of the domestic PNG cooking stove 100 are depicted, respectively, in accordance with an exemplary embodiment of the present disclosure.
[00063] In yet another embodiment of the present disclosure, one or more pan supports 130 may comprise a heat shield 132, a ring 134, and at least three support structures 136. The heat shield 132 may be integrated with one or more pan supports 130 with an optimised loading height required for the desired piped natural gas flame speed. Further, there may be a gap provided on the periphery of one or more pan supports 130 for better air movement and flame structure.
[00064] In an exemplary implementation of the embodiment, one or more pan supports 130 may further comprise at least two fixing legs 138 for attaching the one or more pan supports 130 onto the glass top 140-1 of the domestic PNG cooking stove 100.
[00065] In the exemplary implementation of the embodiment, the ring 134 may be attached on the bottom side of one or more pan supports 130, onto the bottom surface of the support structures 136.
[00066] In the exemplary implementation of the embodiment, the EE PNG stove 100 further includes one or more pan supports (130) equipped with a heat shield (132), a ring (134), at least three support structures (136), and at least two fixing legs (138). The fixing legs (138) are implemented to engage with the glass top (140-1). The pan supports (130) feature a steel body that includes one or more legs (130-1) and a heat shield (130-2). The pan supports have a diameter ranging from 205 mm to 220 mm and a thickness ranging from 2 mm to 4 mm, while the legs (130-2) have a height ranging from 25 mm to 35 mm, and the heat shield (130-2) has a height ranging from 15 mm to 25 mm. Alternatively, the pan supports (130) may have a glass top body, also comprising the legs (130-1) and the heat shield (130-2). In this configuration, the pan supports maintain the same diameter and thickness ranges (205 mm to 220 mm and 2 mm to 4 mm, respectively), but the legs (130-2) have a height ranging from 35 mm to 45 mm, and the heat shield (130-2) having a height ranging from 25 mm to 35 mm.
[00067] In yet another embodiment of the present disclosure, the present disclosure provides an energy-efficient domestic PNG cooking stove 100 for application in domestic cooking usage with high thermal efficiency. At present, people are using LPG stoves with some modifications for the usage of PNG resulting in an inefficient utilization of PNG. The aim of the present disclosure is to design a dedicated PNG stove based on a scientific approach. In addition to this, another aim is to develop a cooking stove with the potential for PNG savings and better performance. The disclosed apparatus consists of an improved design of mixing tube, burner top, and pan support, characterized in that the said apparatus has a high thermal efficiency and gas-saving property.
[00068] In yet another embodiment of the present disclosure, the one or more burner top 110 includes at least two rows with a plurality of ports arranged in a concentric manner on an outer portion 110-1 of each burner top 110.
[00069] In an exemplary implementation of the embodiment,
, at least two fixing legs 138 for attaching one or more pan supports 130 onto a glass top 140-1 placed onto the frame 140-2. Further, the height of at least two fixing legs ranges between 20 mm to 40 mm.
[00070] In the exemplary implementation of the embodiment, the one or more burner tops 110 having one or more ports ranging between 115 and 158. The stove features a big burner top 110-3, which operates with a PNG flow rate ranging from 201 liters per hour (LPH) to 210 LPH, and a small burner top 110-4, with a PNG flow rate ranging from 181 LPH to 190 LPH. Additionally, the stove 100 includes a mixing tube 120 that comprises a big mixing tube 120-1, a small mixing tube 120-2, and an enclosed cup. The big mixing tube 120-1 has a length ranging from 100 mm to 115 mm, an outer diameter ranging from 70 mm to 75 mm, an inner diameter ranging from 35 mm to 40 mm, and a cup thickness between 2 mm and 2.5 mm. Similarly, the small mixing tube 120-2 having a length ranging from 100 mm to 115 mm, an outer diameter ranging from 60 mm to 65 mm, an inner diameter ranging from 30 mm to 35 mm, and a cup thickness between 2 mm and 2.5 mm.
[00071] In the exemplary implementation of the embodiment, the pre-defined diameter of the gas inlet 122 ranges from 13 mm to 18 mm.
[00072] FIGs. 6 (a-d) illustrates exemplary views (600) of mixing tube (a), small burner top (b), big burner top (c), and leg 140-4 (d) of the cooking stove 100, in accordance with an exemplary embodiment of the present disclosure.
[00073] In these embodiments, one or more burner tops comprise one or more small burner tops and one or more big burner tops. One or more small burner tops having a plurality of ports at an inner row range between 30-32, the plurality of ports at an upper side of an outer row ranges between 30-32, and the plurality of ports at a lower side of the outer row ranges between 60-64. The one or more big burner tops having a plurality of ports at the inner row ranging between 35-38, the plurality of ports at the upper side of the outer row ranges between 35-38, and the plurality of ports at the lower side of the outer row ranges between 70-76.
[00074] Thus, it will be appreciated by those of ordinary skill in the art that the diagrams, schematics, illustrations, and the like represent conceptual views or processes illustrating systems and methods embodying this disclosure. The functions of the various elements shown in the figures may be provided through the use of dedicated hardware as well as hardware capable of executing associated software. Similarly, any switches shown in the figures are conceptual only. Their function may be carried out through the operation of program logic, through dedicated logic, through the interaction of program control and dedicated logic, or even manually, the particular technique being selectable by the entity implementing this disclosure. Those of ordinary skill in the art further understand that the exemplary hardware, software, processes, methods, and/or operating systems described herein are for illustrative purposes and, thus, are not intended to be limited to any particular named.
[00075] It should be apparent to those skilled in the art that many more modifications besides those already described are possible without departing from the inventive concepts herein. The inventive subject matter, therefore, is not to be restricted except in the spirit of the disclosed subject matter. Moreover, in interpreting the specification, all terms should be interpreted in the broadest possible manner consistent with the context. In particular, the terms “comprises” and “comprising” should be interpreted as referring to elements, components, or steps in a non-exclusive manner, indicating that the referenced elements, components, or steps may be present, or utilized, or combined with other elements, components, or steps that are not expressly referenced.
[00076] While the foregoing describes various embodiments of the disclosure, other and further embodiments of the disclosure may be devised without departing from the basic scope thereof. The disclosure is not limited to the described embodiments, versions or examples, which are included to enable a person having ordinary skill in the art to make and use the disclosure when combined with information and knowledge available to the person having ordinary skill in the art.
[00077] References back that are used in dependent claims indicate the further embodiment of the subject matter of the main claim by way of the features of the respective dependent claim; they should not be understood as dispensing with obtaining independent protection of the subject matter for the combinations of features in the referred-back dependent claims. Furthermore, with regard to interpreting the claims, where a feature is concretized in more specific detail in a subordinate claim, it should be assumed that such a restriction is not present in the respective preceding claims.
[00078] Since the subject matter of the dependent claims in relation to the prior art on the priority date may form separate and independent disclosures, the applicant reserves the right to make them the subject matter of independent claims or divisional declarations. They may furthermore also contain independent inventions which have a configuration that is independent of the subject matters of the preceding dependent claims.
[00079] What are described above are merely preferred embodiments of the present disclosure, and are not to limit the present disclosure; any modification, equivalent replacement, and improvement within the principle of the present disclosure should be included in the protection scope of the present disclosure.
[00080] Further, elements and/or features of different example embodiments may be combined with each other and/or substituted for each other within the scope of this disclosure and appended claims.

ADVANTAGES OF THE DISCLOSURE:
[00081] The proposed disclosure provides a stove that enables an efficient air-fuel mixture and a method therefore.
[00082] The proposed disclosure provides an energy-efficient domestic PNG cooking stove that can provide higher thermal efficiency.
[00083] The proposed disclosure provides an energy-efficient cooking stove with a burner top for reducing secondary air openings.
[00084] The proposed disclosure provides an energy-efficient domestic PNG cooking stove with a mixing tube for reducing air-fuel mixture residence time.
[00085] The proposed disclosure provides the energy-efficient cooking stove with a pan support for better air movement and flame structure.
,CLAIMS:1. An energy efficient piped natural gas (EE PNG) stove 100 comprising:
one or more burner tops 110;
one or more mixing tubes 120 operatively coupled to the one or more burner tops 110, wherein each of the one or more mixing tubes 120 having a first end and a second end, wherein:
the first end is a gas inlet 122 connected to a source of fuel; and the second end is connected to an air-fuel mixture outlet 124;
the one or more mixing tubes 120 further having an air inlet opening 126 to allow air to enter in the one or more mixing tubes 120 and mix with a fuel received from the gas inlet 122 to form an air-fuel mixture; and
wherein the air-fuel mixture outlet 124 is adapted to removably fit at a bottom portion of the one or more burner tops 110 such that the air-fuel mixture outlet 124 receives the air-fuel mixture through the one or more mixing tubes 120 and provide the air-fuel mixture to the one or more burner tops 110 for combustion.
2. The EE PNG stove 100 as claimed in claim 1, wherein:
the one or more burner tops 110 comprises a big burner top 110-3 and a small burner top 110-4, and wherein the one or burner tops 110 having an outer portion 110-1 enclosing an inner portion 110-2, the outer portion 110-1 being inclined at a predefined angle from a horizontal surface of the stove (100), and wherein the air-fuel mixture outlet 124 engages with the outer portion 110-1 and the inner portion 110-2, wherein the pre-defined angle ranges between 300 to 400;
the one or more burner tops 110 having a port diameter ranges between 1.5 mm to 2.5 mm; and
the outer portion 110-2 having an upper outer portion 110-1-1 and a lower outer portion 110-1-2.
3. The EE PNG stove 100 as claimed in claim 2, wherein:
the outer portion 110-1 comprises one or more outer ports 112, and the inner portion 110-2 comprises one or more of inner ports 114, and
wherein the one or more outer ports 112 and the one or more of inner ports 114 are arranged in a row or in a concentric manner on the outer portion 110-1, the inner portion 110-2, the upper outer portion 110-1-1 and the lower outer portion 110-1-2 such that,
the big burner top 110-3 having one or more inner ports 114 ranges between 32 to 38 at an inner portion 110-2, the one or more outer ports 112 ranges between 32 to 38 on the upper outer portion 110-1-1, and the one or more outer ports 112 ranges between 70 to 80 at the lower outer portion 110-1-2; and
the small burner top 110-4 having one or more inner ports 114 ranges between 28-34 at an inner portion 110-2, one or more outer ports 112 ranges between 28 to 34 at the upper outer portion 110-1-1, and one or more outer ports 112 ranges between 60 to 68 at the lower outer portion 110-1-2, and wherein the air-fuel mixture is passes through the one or more of inner ports 114, the one or more outer ports 112.
4. The EE PNG stove 100 as claimed in claim 1, wherein:
the one or more burner tops 110 having one or more ports ranges between 115- 158;
the big burner top 110-3 having a PNG flow rate ranges between 201 liters per hour (LPH) to 210 LPH;
the small burner top 110-4 having the PNG flow rate ranges between 181 LPH to 190 LPH.
the mixing tube 120 having a big mixing tube 120-1, a small mixing tube 120-2, and a cup enclosed therein, wherein,
the big mixing tube 120-1 having a length range between 100 mm to 115 mm; an outer diameter ranges between 70mmto 75 mm and an inner diameter range between 35 mm to 40 mm, and thickness of the cup ranges between 2 mm to 2.5 mm; and
the small mixing tube 120-2 having a length range between 100 mm to 115 mm; an outer diameter ranges between 60 mm to 65 mm and an inner diameter range between 30 mm to 35 mm, and thickness of the cup ranges between 2 mm to 2.5 mm.
5. The EE PNG stove 100 as claimed in claim 1, wherein:
the one or more burner tops 110 comprises a hollow disc 116 provided at a base of each of the one or more burner tops 110 to reduce entering of atmospheric air into the air-fuel mixture; and
the air inlet opening 126 is provided in a proximity of the gas inlet 122.
6. The EE PNG stove 100 as claimed in claim 1, wherein the second end is connected to the air-fuel mixture outlet 124 through a joint, and wherein the joint comprises a slanted portion 128.
7. The EE PNG stove 100 as claimed in claim 1, wherein the stove (100) further comprises a glass top 140-1 placed onto a frame 140-2 of a stove body 140, wherein:
the frame 140-2 comprise at least two legs 140-4 for supporting the stove body 140, wherein a height of the at least two legs range between 20 mm to 40 mm; and
the stove body 140 comprises one or more knobs 140-3 for regulating a flow of the fuel from the source of fuel into the one or more mixing tubes 120 via a gas inlet.
8. The EE PNG stove 100 as claimed in claim 1, wherein the stove 100 further comprises one or more pan supports 130 having a heat shield 132, a ring 134, at least three support structures 136 and at least two fixing legs 138, wherein the at least two fixing legs 138 are adapted to engage with the glass top 140-1;
the one or more pan supports 130 having a steel body, comprises one or more legs 130-1, a heat shield 130-2, wherein the one or more pan supports having a diameter range between 205 mm to 220 mm, a thickness ranges between 2 mm to 4 mm; the one or more legs 130-2 having a height range between 25 mm to 35 mm, a height of the heat shield 130-2 ranges between 15 mm to 25 mm; or
the one or more pan supports 130 having a glass top body, comprises the one or more legs 130-1, the heat shield 130-2, wherein the one or more pan supports having a diameter range between 205 mm to 220 mm, a thickness ranges between 2 mm to 4 mm; the one or more legs 130-2 having a height range between 35 mm to 45 mm, a height of the heat shield 130-2 ranges between 25 mm to 35 mm.
9. A method 200 for enabling an efficient air-fuel mixture, the method 200 comprising:
coupling 201 operatively one or more mixing tubes 120 with one or more burner tops 110, wherein each of the one or more mixing tubes 120 having a first end and a second end;
connecting 202 the first end is a gas inlet 122 connected to a source of fuel;
connecting 203 the second end to an air-fuel mixture outlet 124;
providing 204 an air inlet opening 126 on the one or more mixing tubes 120;
allowing 205 air to enter in the one or more mixing tubes 120 and mix with a fuel received from the gas inlet 122 to form an air-fuel mixture; and
fitting 206 removably the air-fuel mixture outlet 124 at a bottom portion of the one or more burner tops 110 such that the air-fuel mixture outlet 124 receives the air-fuel mixture through the one or more mixing tubes 120 and provide the air-fuel mixture to the one or more burner tops 110 for combustion.
10. The method 200 as claimed in claim 9, wherein:
the one or more burner tops 110 comprises an outer portion 110-1 enclosing an inner portion 110-2, the outer portion 110-1 being inclined at a predefined angle from a horizontal surface of the stove (100), and wherein the air-fuel mixture outlet 124 engages with the outer portion 110-1 and the inner portion 110-2; and
the one or more burner tops 110 comprises a hollow disc 116 provided at a base of each of the one or more burner tops 110 to reduce entering of atmospheric air into the air-fuel mixture.