COMBUSTION DEVICE FOR IMPROVED COMBUSTION EFFICIENCY

Description

BACKGROUND OF THE INVENTION

The present invention relates to a combustion device and, more particularly, to a combustion device for improved combustion efficiency.

TW Patent No. I704317 discloses a combustion device comprising a base and a burner tube. The burner tube is located within the base and includes a mixing section and an exhaust section. The mixing section extends axially along a reference line horizontally. One end of the mixing section has an air inlet and a first mixing port located radially on the outer peripheral edge. The mixing section has a first side and a second side opposite the first side, with the first mixing port located on the second side. The exhaust section is connected to the opposite end of the mixing section from the air inlet and includes a straight portion and a first curved portion. The straight portion extends axially along the reference line and is connected at one end to the mixing section. The first curved portion is connected at one end to the opposite end of the straight portion relative to the mixing section, with the curvature direction of the first curved portion facing the same side of the mixing section as the first mixing port.

However, the burner tube is placed inside a base that is closed on the sides. During combustion, the interior of the base becomes very hot. While the base can draw in air from below through convection, the hot air expands, which reduces its density and hinders its ability to support combustion effectively. Similarly, the air entering the first mixing port in the mixing section is also hot, resulting in unsatisfactory enhancement of combustion efficiency.

The present invention is, therefore, intended to obviate or at least alleviate the problems encountered in the prior art.

SUMMARY OF THE INVENTION

The present invention discloses a combustion device for improved combustion efficiency, comprising a stove body, which includes a stove bowl and a stove shell that are coupled together. The stove shell is positioned outside and surrounds the outer periphery of the stove bowl. It includes a periphery with a plurality of horizontally arranged intake apertures that connect the interior and exterior of the stove shell. The stove bowl has an internal space that defines a combustion zone and comprises a plurality of shielding components positioned around the combustion zone at the same vertical height as the intake apertures. Adjacent shielding components are separated by ventilation portions that connect the combustion zone with the interior of the stove shell. The combustion device further includes a burner that comprises at least one first combustion pipe. This combustion pipe is arcuate and extends around a vertical centerline. The first combustion pipe is located within the combustion zone.

There has thus been outlined, rather broadly, the more important features of the invention in order that the detailed description thereof that follows may be better understood, and in order that the present contribution to the art may be better appreciated. There are additional features of the invention that will be described hereinafter and which will form the subject matter of the claims appended hereto.

In this respect, before explaining at least one embodiment of the invention in detail, it is to be understood that the invention is not limited in its application to the details of construction and to the arrangements of the components set forth in the following description or illustrated in the drawings. The invention is capable of other embodiments and of being practiced and carried out in various ways. Also, it is to be understood that the phraseology and terminology employed herein are for the purpose of description and should not be regarded as limiting.

As such, those skilled in the art will appreciate that the conception, on which this disclosure is based, may readily be utilized as a basis for the designing other structures, methods and systems for carrying out the several purposes of the present invention. It is important, therefore, that the claims be regarded as including such equivalent constructions insofar as they do not depart from the spirit and scope of the present invention.

Further, the purpose of the abstract is to enable the public generally, and especially scientists, engineers and practitioners in the art who are not familiar with patent or legal terms or phraseology, to determine quickly from a cursory inspection the nature and essence of the technical disclosure. The abstract is not intended to define the invention, which is measured by the claims, nor is it intended to be limiting as to the scope of the invention in any way.

Other objectives, advantages, and new features of the present invention will become apparent from the following detailed description of the invention when considered in conjunction with the accompanied drawings.

BRIEF DESCRIPTION OF DRAWINGS

FIG. 1 is a perspective view of a combustion device for improved combustion efficiency in accordance with the present invention.

FIG. 2 is an exploded perspective view of the combustion device of FIG. 1.

FIG. 3 is an exploded perspective view of a cap of the combustion device of FIG. 1.

FIG. 4 is an exploded perspective view of the cap of the combustion device of FIG. 1 from another angle.

FIG. 5 is a vertical cross-sectional view of the combustion device of FIG. 1.

FIG. 6 is a cross-sectional view of a first cap of the combustion device of FIG. 1.

FIG. 7 is a cross-sectional view of a second cap of the combustion device of FIG. 1.

FIG. 8 is a horizontal cross-sectional view of shielding components of the combustion device of FIG. 1.

FIG. 9 is a horizontal cross-sectional view of a burner of the combustion device of FIG. 1.

DETAILED DESCRIPTION OF THE INVENTION

FIGS. 1 to 8 show a combustion device 10 in accordance with the present invention. The combustion device 10 comprises a stove body 20 and a burner 30.

The stove body 20 comprises a stove bowl 21 and a stove shell 22, which are coupled together. The stove shell 22 is positioned externally and surrounds the outer periphery of the stove bowl 21. It includes a periphery with a plurality of intake apertures 221, arranged horizontally, that facilitate communication between the interior and exterior of the stove shell 22. The stove bowl 21 has an internal space defining a combustion zone 211 and incorporates several shielding components 212, which are positioned around the combustion zone 211 at the same vertical level as the intake apertures 221. Adjacent shielding components 212 include a ventilation portion 213 arranged between them, linking the combustion zone 211 with the interior of the stove shell 22. The stove shell 22 extends vertically from its bottom edge to its upper edge and flares outwardly from the bottom edge to the upper edge.

The stove body 20 further includes a baking pan 23 connected to the upper edge of the stove shell 22. The combustion zone 211 is situated between the stove bowl 21 and the baking pan 23. The baking pan 23 is centered on a vertical centerline C and includes an oil drip hole 231, with the centerline C defining a first radius R1.

The internal space of the stove body 20 incorporates a heat insulating zone 24, located on the side opposite the baking pan 23 and positioned between the stove bowl 21 and the stove shell 22. The stove bowl 21 features two first through-holes 214 and two second through-holes 215, with both the first and second through-holes 214 and 215 providing communication between the combustion zone 211 and the heat insulating zone 24.

The stove bowl 21 comprises two first bowl bodies 216 and two second bowl bodies 217, arranged in an interleaved manner, each having a fan-shaped configuration capable of forming a disk shape. The two first bowl bodies 216 are interchangeable with each other and have identical structures, as do the two second bowl bodies 217. The shielding components 212 are evenly distributed along the outer peripheries of both the first and second bowl bodies 216 and 217 horizontally. Each of the two first through-holes 214 is correspondingly positioned in the two first bowl bodies 216, and each of the two second through-holes 215 is correspondingly positioned in the two second bowl bodies 217. The lower side of each of the two first bowl bodies 216 comprises a first bracket 218, while the lower side of each of the two second bowl bodies 217 comprises a second bracket 219. The first brackets 218 and second brackets 219 are connected to the stove shell 22.

The burner 30 includes at least one first combustion pipe 31 that is arcuate and extends around the vertical centerline C. The at least one first combustion pipe 31 is located within the combustion zone 211. Specifically, there are two first combustion pipes 31, each arranged in a semi-arc shape and positioned on opposite sides of the centerline C in a horizontal direction. The distance from the inner periphery of each first combustion pipe 31 to the centerline C defines a second radius R2, which is greater than the first radius R1. The distance from the inner periphery of each of the two first combustion pipes 31 to the centerline C is equal to the second radius R2.

Additionally, the burner 30 comprises two second combustion pipes 32 that are arcuate and extend around the centerline C within the combustion zone 211. The two second combustion pipes 32 are each arranged in a semi-arc shape and positioned on opposite sides of the centerline C in the horizontal direction, at the same height as the first combustion pipes 31. The distance from the inner periphery of each of the two second combustion pipes 32 to the centerline C defines a third radius R3, which is smaller than the second radius R2.

Furthermore, the burner 30 includes two first nozzles 33, two second nozzles 34, two first mixing pipes 35, and two second mixing pipes 36. The two first nozzles 33 are positioned in alignment with the two first through-holes 214 in a vertical direction, and the two second nozzles 34 are positioned in alignment with the two second through-holes 215 in the vertical direction.

The stove body 20 also comprises two first caps 25 and two second caps 26. The first caps 25 are mounted on and cover the first nozzles 33 and the ends of the first through-holes 214 adjacent to the baking pan 23. The second caps 26 are mounted on and cover the second nozzles 34 and the ends of the second through-holes 215 adjacent to the baking pan 23.

Each of the two first mixing pipes 35 has one end connected to one of the first nozzles 33 and another end extending through one of the first caps 25 to connect to one of the first combustion pipes 31. Each of the two second mixing pipes 36 has one end connected to one of the second nozzles 34 and another end extending through one of the second caps 26 to connect to one of the second combustion pipes 32.

The burner 30 also includes two first lines L1, each passing through the centerline C and each of the first nozzles 33, and two second lines L2, each passing through the centerline C and each of the second nozzles 34.

The angle between the two first lines L1 is greater than 150 degrees and less than 210 degrees, and the angle between the two second lines L2 is similarly between 150 degrees and 210 degrees. Each of the two first mixing pipes 35 includes a first mixing port 351 that communicates with the interior and exterior of the first mixing pipe 35 and extends horizontally on a lateral side. The two first mixing ports 351 are positioned within the first caps 25. Each of the two second mixing pipes 36 includes a second mixing port 361 that communicates with the interior and exterior of the second mixing pipe 36 and extends horizontally on a lateral side. The two second mixing ports 361 are positioned within the second caps 26.

During operation of the combustion device 10, hot air and exhaust gases generated by the combustion of the first combustion pipes 31 and the second combustion pipes 32 within the combustion zone 211 are expelled through the oil drip hole 231. Simultaneously, the ventilation portion 213 draws air from outside the combustion device 10. The dense external cold air enhances combustion efficiency. Additionally, the plurality of shielding components 212 prevent direct airflow from blowing onto the first and second combustion pipes 31 and 32, ensuring stable flames even in windy conditions. The first nozzles 33 supply fuel to the first combustion pipe 31, and air is drawn through the first mixing port 351 to aid combustion. The first cap 25 and the first through-hole 214 facilitate the intake of cooler air from the heat insulating zone 24, thus improving the combustion efficiency of the first combustion pipe 31.

In view of the foregoing, the combustion device 10 is designed to optimize airflow, fuel delivery, and heat insulation, specifically to applications requiring enhanced energy efficiency.