US 12,241,637 B2
Domestic cooking stove for combustion of LPG fuel with high thermal efficiency
Aniruddha Dilip Kulkarni, Uttar Pradesh (IN); Rahul Garg, Uttar Pradesh (IN); Satish Dayal Yadav, Uttar Pradesh (IN); Renny Andrew Moonjely, Uttar Pradesh (IN); Ravi Kumar Voolapalli, Uttar Pradesh (IN); Sanjay Bhargava, Uttar Pradesh (IN); and Surendra Pratap, New Delhi (IN)
Assigned to BHARAT PETROLEUM CORPORATION LIMITED, Maharashtra (IN); and PETROLEUM CONSERVATION RESEARCH ASSOCIATION, New Delhi (IN)
Appl. No. 17/780,740
Filed by BHARAT PETROLEUM CORPORATION LIMITED, Maharashtra (IN); and PETROLEUM CONSERVATION RESEARCH ASSOCIATION, New Delhi (IN)
PCT Filed Nov. 27, 2020, PCT No. PCT/IB2020/061220
§ 371(c)(1), (2) Date May 27, 2022,
PCT Pub. No. WO2021/105947, PCT Pub. Date Jun. 3, 2021.
Claims priority of application No. 201921048627 (IN), filed on Nov. 27, 2019.
Prior Publication US 2022/0412566 A1, Dec. 29, 2022
Int. Cl. F24C 3/08 (2006.01); F23D 14/58 (2006.01); F24C 3/00 (2006.01); F24C 15/10 (2006.01)
CPC F24C 3/085 (2013.01) [F23D 14/58 (2013.01); F24C 3/008 (2013.01); F24C 15/107 (2013.01); F23D 2900/14062 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A domestic cooking stove comprising:
a frame to mount a primary tube, one or more nozzles, one or more knobs, one or more mixing tubes, one or more burner tops, one or more pan supports, one or more heat reflectors, and a plurality of legs;
the primary tube is mounted within the frame to receive fuel;
each nozzle is in fluid communication with the primary tube to receive the fuel and inject the fuel into the one or more mixing tubes at a controlled rate using each knob that is connected to each respective nozzle through a nozzle holder assembly;
each mixing tube is in fluid communication with each nozzle to receive the injected fuel from each respective nozzle, wherein each respective mixing tube allows primary air entrainment through one or more slot openings and mixes the primary air with the injected fuel, and wherein each respective mixing tube modulates pressure gradient of the air-fuel mixture through each venturi contained in each respective mixing tube and the air-fuel mixture passes through a cup of each respective mixing tube towards each respective burner top;
each burner top is coaxially positioned above the cup of the mixing tube and is in fluid communication with the mixing tube, wherein each respective burner top comprises a set of inner ports and outer ports positioned on circumferential surface of each respective burner top to receive the air-fuel mixture from the mixing tube, wherein the received air-fuel mixture is ignited for combustion;
each pan support is fixed on the frame via pin holes to coaxially align each respective pan support with the burner top, wherein the pan support comprises a circular metallic element with a plurality of metallic resting strips that support a bottom surface of a vessel to be heated;
each heat reflector is coaxially positioned with respect to the burner top and is rested on the frame, wherein each respective heat reflector aids in optimum secondary air entrainment for the combustion and reduces an annular gap between an inner circumference of heat reflector and an outer circumference of the burner top to minimize heat losses, wherein the heat reflector has a curved orientation to reduce heat transfer in a downward direction and generates eddies that increases heat transfer towards vessel bottom; and
each plurality of legs are positioned below the frame of the domestic cooking stove, wherein each leg has a predetermined height to maintain a gap between table top and frame bottom surface for entrainment of air.