US20180023816A1

US20180023816A1 - Portable gas stove

Info

Publication number: US20180023816A1
Application number: US15/364,186
Authority: US
Inventors: Im Hyoung Kim
Original assignee: Gasware Co Ltd
Current assignee: Gasware Co Ltd
Priority date: 2016-07-25
Filing date: 2016-11-29
Publication date: 2018-01-25
Also published as: CN107655041A; KR20180011555A; KR101840296B1; CN107655041B

Abstract

Disclosed is a portable gas stove including a body including a nozzle configured to spray a gas supplied through an inlet, a Venturi tube configured to change a pressure of the gas sprayed from the nozzle, and a chamber into which the gas discharged from the Venturi tube is introduced, a first distribution plate mounted at one side in the chamber and including a plurality of flow paths, a second distribution plate mounted on the chamber to be spaced a predetermined distance from the first distribution plate, a flame forming plate mounted on the second distribution plate and configured to disperse, diffuse, and discharge a mixture of the air and gas discharged from the slot through a plurality of tiny holes, and a mesh mounted on the flame forming plate and configured to diffuse combustion heat of the mixture discharged through the tiny holes is disclosed.

Description

CROSS-REFERENCE TO RELATED APPLICATION

This application claims priority to and the benefit of Korean Patent Application No. 2016-0094038, filed on Jul. 25, 2016, the disclosure of which is incorporated herein by reference in its entirety.

BACKGROUND

1. Field of the Invention

The present invention relates to a portable gas stove, and more particularly, to a cooking and heating gas stove by which a mixture of air and liquefied butane gas is uniformly dispersed and diffused and flames burn uniformly from a fire nozzle, and thus combustion efficiency and exothermic performance are largely improved.

2. Discussion of Related Art

Nowadays, demand for a stove used for cooking in the outdoors is increasing owing to an increased number of people who enjoy outdoor activities such as hiking and fishing, and so-called gas stoves which use liquefied butane gas filled in a disposable bomb in the form of a metal have become mainstream.
Recently, a gas stove which is easy to use, convenient to carry and store, and is used for cooking and heating has been suggested.
For example, ‘Stove Device for a Portable Burner’ is disclosed in Korean Registered Utility Patent No. 20-0268993.
As illustrated in FIGS. 1 and 2, a stove device for a portable burner includes a burner unit 10 configured to generate combustion heat by gas ignition at an upper center of a main body 5, a plurality of supports 20 installed at an outside of the burner unit 10, an adapter 31 including a gas regulating valve 4 configured to adjust a supply amount of gas supplied from a gas container 300, a connecting hose 3 which connects the main body 5 and the adapter 31, a sparker 50 configured to ignite gas supplied from the gas container 300 at the burner unit 10 when a piezo switch 32 is operated, a fixing cap 60 and a diffusion mesh 80 configured to diffuse combustion heat generated by the burner unit 10, and an exothermic mesh 90 heated by combustion heat diffused through the diffusion mesh 80.
However, since such a conventional portable stove has a structure in which flames, which burn when air and gas are mixed and are burned in the burner unit 10, diffuse through the fixing cap 60, the diffusion mesh 80, and the exothermic mesh 90, and heat, there is a problem in that the flames do not burn uniformly and thus combustion efficiency and exothermic performance are considerably decreased. In addition, when the conventional portable stove is used for a predetermined time or more, since a thermal fuse type overheating prevention unit is activated in the main body 5 due to heat generated during combustion and gas supply is automatically shut off, there is a limit for heating because the conventional portable stove cannot be used again until the thermal fuse is replaced.
In addition, since the fixing cap 60, the diffusion mesh 80, and the exothermic mesh 90 have to be selectively separated from or mounted on the conventional portable stove for cooking or heating, it is very cumbersome and inconvenient to use.
The above description is included to aid in understanding of the present invention and does not mean that the technology is widely known to those skilled in the art.

PRIOR ART

Patent Document

KR20-0268993 Y1 (Mar. 8, 2002)
KR10-1356776 B1 (Jan. 20, 2014)
KR20-0471688 Y1 (Feb. 28, 2014)
KR10-1498095 B1 (Feb. 25, 2015)

SUMMARY OF THE INVENTION

Accordingly, through constant research, the inventor has a made a great effort to solve limits and problems of a conventional portable gas stove while considering the above-described matter and, as a result, developed a portable gas stove having a new structure which can achieve effects in which a mixture of air and liquefied butane gas is dispersed and diffused, flames burn uniformly from a fire nozzle, and combustion efficiency and exothermic performance (radiant temperature) are significantly improved, and heat generated during combustion and transferred to a main body is minimized.
Accordingly, the present invention is directed to a portable gas stove in which a mixture of air and gas is uniformly dispersed and diffused, and flames burn uniformly from a fire nozzle.
In addition, the present invention is also directed to a portable gas stove in which heat transferred to a main body is minimized during combustion.
Here, the technical problems to be solved and purpose of the present invention are not limited to the above-described problems and purpose, and other problems and purposes which are not described above will become apparent to those skilled in the art from the description below.
According to an aspect of the present invention, there is provided a portable gas stove including a body including a nozzle configured to spray a gas supplied through an inlet, a Venturi tube configured to change a pressure of the gas sprayed from the nozzle, and a chamber into which the gas discharged from the Venturi tube is introduced, a first distribution plate mounted at one side in the chamber and including a plurality of flow paths configured to mix, disperse, and diffuse air and the gas, a second distribution plate mounted on the chamber to be spaced a predetermined distance from the first distribution plate to prevent a backfire phenomenon, and including a slot configured to mix, disperse, diffuse, and discharge air and the gas in an inward direction of an edge thereof, a flame forming plate mounted on the second distribution plate and configured to disperse, diffuse, and discharge a mixture of the air and gas discharged from the slot through a plurality of tiny holes, and a mesh mounted on the flame forming plate and configured to diffuse combustion heat of the mixture discharged through the tiny holes.
Accordingly, the portable gas stove according to an embodiment of the present invention, in which a mixture of air and gas is uniformly dispersed and diffused, and flames burn uniformly from a fire nozzle, may have significantly improved combustion efficiency and exothermic performance.
In addition, since the portable gas stove according to the exemplary embodiment of the present invention includes a bracket mounted between the body and the chamber, heat of the chamber transferred to the body may be blocked and minimized, and thus the portable gas stove may prevent flames from being extinguished due to a overheat prevention device or trouble from occurring even when being used for a long time for heating in a normal state.
In addition, since the portable gas stove according to the exemplary embodiment of the present invention further includes a gas pressure regulator connected to a nozzle of a gas container to maintain a pressure of a gas in a predetermined range and including an injection port connected to the inlet so that the gas flows and a spindle configured to adjust a discharge rate of the gas to be in a predetermined range, gas fuel may be stably supplied to the portable gas stove.
In addition, since the portable gas stove according to the exemplary embodiment of the present invention further includes a holding clip provided under the bracket, elastically deformed by elasticity, and configured to fix the gas pressure regulator to a lower portion of the body, the portable gas stove may be compactly carried and stored, and thus convenience and spatial efficiency may be achieved.
In addition, since the portable gas stove according to the exemplary embodiment of the present invention further includes a protective cover mounted between the body and the mesh to cover the chamber and including a plurality of air holes which are formed along a perimeter of the chamber and through which air flows, safety may be achieved when using.

BRIEF DESCRIPTION OF THE DRAWINGS

The above and other objects, features and advantages of the present invention will become more apparent to those of ordinary skill in the art by describing exemplary embodiments thereof in detail with reference to the accompanying drawings, in which:

FIG. 1 is a perspective view illustrating one example of a portable gas stove according to a conventional technology;

FIG. 2 is an enlarged cross-sectional view illustrating a part in FIG. 1;

FIG. 3 is a perspective view illustrating a portable gas stove according to an embodiment of the present invention;

FIG. 4 is a exploded perspective view illustrating main parts of the portable gas stove according to the embodiment of the present invention; and

FIG. 5 is a longitudinal sectional view illustrating the portable gas stove according to the embodiment of the present invention.

DETAILED DESCRIPTION OF EXEMPLARY EMBODIMENTS

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.
First, terms used herein are selected in consideration of functions of the present invention, and should be interpreted based on concepts consistent with the technological scope and meanings commonly or conventionally recognized in the art.
In addition, when it is determined that detailed descriptions of related well-known functions and configurations unnecessarily obscure the gist of the invention, detailed descriptions thereof will be omitted.
Components in the accompanying drawings are exaggeratedly or simply illustrated for convenience and clarity of description and understanding of the configuration and function of the technology, and the sizes thereof do not exactly match real sizes.
In addition, when a certain part “includes” a certain component, it means that another component may be further included not excluding other components unless otherwise defined
As illustrated in FIGS. 3 to 5, a portable gas stove according to an embodiment of the present invention mainly includes a body 10, a first distribution plate 20, a second distribution plate 30, a flame forming plate 40, a mesh 50, a bracket 60, a protective cover 70, and a gas pressure regulator 80.
The body 10 is formed in a cylindrical shape and serves as a base of the gas stove, a storage space 15 through which the bracket 60 is inserted is formed at a top surface thereof, and the storage space 15 is formed to vertically extend.
In addition, an inlet 11 configured to receive gas fuel from a gas container C is formed at one side of the body 10, a nozzle 12 configured to discharge a gas is mounted at an end of the inlet 11, and a Venturi tube 13 configured to change a pressure of the gas discharged through the nozzle 12 is mounted at an upper side therein.
In addition, a chamber 14 into which a gas coming out of the Venturi tube 13 is introduced is provided at the upper side of the body 10.
That is, the chamber 14 is formed in a cylindrical shape with an open top surface, and the Venturi tube 13 is inserted into and mounted on an inner bottom thereof through a hole formed at one side of a lower portion thereof.
Here, the body 10 and the chamber 14 are formed in a cylindrical shape but may be formed in various shapes such as a rectangular, semicircular, or oval shape other than the cylindrical shape.
In addition, a plurality of legs may also be integrally formed at a lower portion of the body 10 to support the body 10 to be positioned at a predetermined height from the ground.
The first distribution plate 20 functions to play a role in mixing, dispersing, and diffusing the gas and air introduced into the chamber 14 through the inlet 11 and the Venturi tube 13.
To this end, the first distribution plate 20, in which a plurality of flow paths 21 which vertically extend are formed, is mounted at one side in the chamber 14, that is, adjacent to an end of the Venturi tube 13 through which a gas and air are discharged.
The second distribution plate 30 functions to play a role in mixing, dispersing, diffusing, and discharging a gas and air which move toward an upper portion of the chamber 14 through the first distribution plate 20.
To this end, the second distribution plate 30, in which a horizontally extending slot 31 is formed inside an edge thereof, is mounted on the chamber 14 to be spaced a predetermined distance from the first distribution plate 20.
In addition, the second distribution plate 30 may be formed in the shape of a circular plate corresponding to the shape of an opening of the chamber 14 and the flame forming plate 40 to prevent a backfire phenomenon.
Here, the second distribution plate 30 may be formed in various shapes corresponding to the body 10 and the opening of the chamber 14, for example, a rectangular, semicircular, or oval shape other than the shape of a disk shape.
The flame forming plate 40 functions to play a role in uniformly dispersing, diffusing, and discharging a mixture of a gas and air discharged upward through the slot 31 of the second distribution plate 30.
To this end, the flame forming plate 40 is mounted on an upper side of the second distribution plate 30 to cover an upper end of the opening of the chamber 14.
That is, since the flame forming plate 40 is formed in the shape of a circular plate, an edge of the flame forming plate 40 is placed on a support step formed on the upper end of the opening of the chamber 14, a mixed gas discharged to the upper portion of the second distribution plate 30 is dispersed, diffused, and discharged uniformly over an entire area thereof through tiny holes, and the mixed gas is burned and flames are generated, exothermic efficiency is increased due to complete combustion, and exhaust of environmental pollutants such as carbon monoxide or nitrogen oxides due to incomplete combustion can be decreased.
Here, although a metal foam is preferably employed and applied to the flame forming plate 40, the present invention is not limited thereto, and for example, a porous material having a plurality of tiny holes formed over an entire surface thereof, such as a metal fiber, a ceramic fiber, a ceramic plate, a ceramic form, stainless plate, and the like may be employed.
In addition, the flame forming plate 40 may be formed in various shapes corresponding to the shape of the opening of the chamber 14 and the second distribution plate 30, such as, a rectangular, semicircular, or oval shape.
The mesh 50 functions to play a role in diffusing combustion heat of a mixed gas discharged through the tiny holes of the flame forming plate 40.
To this end, the mesh 50 is installed at an upper side of the flame forming plate 40 to cover the flame forming plate 40.
Here, the mesh 50 may be formed in a semi-oval shape, a semispherical plate shape, or a mesh (net) shape, which protrudes gradually toward the central portion thereof, to smoothly diffuse combustion heat generated by the flame forming plate 40 in all directions.
In addition, the mesh 50 with the flame forming plate 40 on the upper portion of the chamber 14 may be maintained in a stably fixed state by a separate fixing ring.
Meanwhile, a fire nozzle grid G configured to support a container or cooker to be positioned at a predetermined height may also be provided at an edge and an upper side of the mesh 50.
The bracket 60 functions to play a role in blocking and minimizing heat of the chamber 14 from being transferred to the body 10.
To this end, the bracket 60 is mounted between the body 10 and the chamber 14.
That is, since the bracket 60 is formed to minimize a contact area of the body 10 and the chamber 14, an installation distance between the body 10 and the chamber 14 is maintained to have a predetermined space, and thus the bracket 60 may block and minimize heat of the chamber 14 from being transferred to the body 10 during combustion.
Here, the bracket 60 may also be formed in a divided form as an upper bracket 61 and a lower bracket 62 in which a plurality of air holes are formed to decrease a contact area of the body 10 and the chamber 14 and to increase cooling efficiency thereof.
In addition, a holding clip 63, which is mounted at a lower portion of the lower bracket 62 while exposed through the storage space 15 of the body, is elastically deformed due to elasticity when an external force is applied to the holding clip 63, selectively holds the gas pressure regulator 80 in a grasping manner, and fixes the gas pressure regulator 80 to the lower side of the body 10, may be provided.
That is, since the holding clip 63 may hold both sides of the gas pressure regulator 80 and integrally couple the gas pressure regulator 80 to an inside of the lower portion of the body 10 while being elastically deformed due to elasticity thereof, spatial efficiency in addition to convenience in carrying and storing can be achieved.
The protective cover 70 functions to play a role in protecting the chamber 14 and making the chamber 14 safe.
To this end, the protective cover 70 is mounted between the body 10 and the mesh 50 to cover the chamber 14.
That is, the protective cover 70 is formed in the shape of a thin duct and is mounted on a top surface of the body 10 to be spaced a predetermined distance from the chamber 14.
In addition, a plurality of air holes 71 are formed to be spaced predetermined distances from each other along a perimeter of the protective cover 70 so that external air is smoothly introduced into the Venturi tube 13 and cooling efficiency is increased.
The gas pressure regulator 80 is connected to the nozzle of the gas container C and functions to play a role in supplying gas fuel at a predetermined pressure to the inlet 11 of the body.
To this end, an injection port 81 through which a gas flows to the inlet 11 of the body is formed in one side surface of the gas pressure regulator 80, and a spindle 82 configured to adjust a discharge rate of the gas to be in a predetermined range is formed at another side surface.
Here, the inlet 11 of the body and the injection port 81 of the gas pressure regulator are connected by a connecting hose H and spaced a predetermined distance from each other, and the spindle 82 may adjust an amount of gas fuel supplied to the inlet 11 of the body from the gas container C by an opening and closing operation which widens and opens a path or narrows and closes the path by a rotation operation of the spindle 82.
An operation and a principle of action of the above-described portable gas stove according to the embodiment of the present invention will be described below.
First, when gas fuel of the gas container C is sprayed into the Venturi tube 13 through the inlet 11 and the nozzle 12, an ambient air pressure is decreased, at this moment, external air is smoothly introduced into the Venturi tube 13 through a gap between the nozzle 12 and the Venturi tube 13 due to pressure change, is mixed with the gas fuel while passing through the Venturi tube 13, and is supplied into the chamber 14.
The mixture of air and the gas in the chamber 14 mixed as described above, is uniformly mixed, dispersed, and diffused two times while sequentially passing through a flow path 21 of the first distribution plate and the slot 31 of the second distribution plate, and is discharged in a state of being dispersed and diffused more uniformly while passing through the flame forming plate 40 again.
Next, the mixture is ignited by an ignition device, which lights a fire, such as a lighter, is burned in all directions along entire surfaces of the flame forming plate 40 and the mesh 50, and flames burn uniformly and stably and heat a separate cooking container or heat to increase ambient temperature.
Even when the flames suddenly burn in a reverse direction of a flow of the mixture, since the first distribution plate 20 stably blocks the flames, an accident or trouble due to a backfire phenomenon can be prevented.
In addition, since the body 10 and the chamber 14 are installed to be spaced a predetermined distance from each other by the bracket 60, heat of the chamber 14 is effectively blocked and minimized from being transferred to the body 10 during combustion.
In the present invention, since the portable gas stove mixes air and a gas, and disperses and diffuses the air and gas, flames burn uniformly, and thus combustion efficiency and exothermic performance thereof can be significantly increased, and even when the portable gas stove is used for a long time for heating in a normal state, an effect of preventing flames from being extinguished by an operation of overheating prevention device separately mounted on the body 10 can be achieved.
As described above, in the portable gas stove according to the exemplary embodiment of the present invention, since a first distribution plate primarily mixes a mixture of air and a gas in a chamber, disperses and diffuses the mixture, and supplies the mixture to a second distribution plate on the chamber, and the second distribution plate on the chamber secondarily mixes, disperses, diffuses, and discharges the air and gas, and a flame forming plate thirdly disperses, diffuses, and discharges the mixture, a backfire phenomenon can be prevented, and since flames burn uniformly and stably, combustion efficiency and exothermic performance can be significantly improved.
Furthermore, since a bracket maintains a predetermined distance and space between the body and the chamber, heat of the chamber transferred to the body is blocked and minimized, and accordingly flames are prevented from being automatically extinguished due to an operation of an overheat prevention device or trouble is prevented from occurring unlike a conventional case even when the portable gas stove is used for a long time for heating in a normal state, and thus convenience of use can be maximized.
In addition, since the gas pressure regulator adjusts and maintains a discharge rate and a pressure of a gas contained in a gas container to be in a predetermined range to stably supply the gas, combustion efficiency can be improved and safety can be significantly improved
Effects of the present invention are not limited to the above-described effects and other unmentioned effects may be clearly understood by those skilled in the art within the scope of the appended claims.
Meanwhile, the present invention is not limited to the above-described embodiment and the accompanying drawings, and various changes and non-exemplified applications may be made without departing from the scope of the technological concept of the present invention, and it should be clear to those skilled in the art that the present invention may be widely applied by substituting components and other equivalent embodiments.
Therefore, changes and applications relating to the features of the present invention should be interpreted to be included in the concept and scope of the present invention.


[Reference Numerals]

10: BODY	11: INLET
12: NOZZLE	13: VENTURI TUBE
14: CHAMBER	20: FIRST DISTRIBUTION PLATE
21: FLOW PATH	30: SECOND DISTRIBUTION PLATE
31: SLOT	40: FLAME FORMING PLATE
50: MESH	60: BRACKET
61: UPPER BRACKET	62: LOWER BRACKET
63: HOLDING CLIP	70: PROTECTIVE COVER
71: AIR HOLE	80: GAS PRESSURE REGULATOR
81: INJECTION PORT	82: SPINDLE
C: GAS CONTAINER	G: FIRE NOZZLE GRID

Claims

What is claimed is:

1. A portable gas stove comprising:

a body (10) including a nozzle (12) configured to spray a gas supplied through an inlet (11), a Venturi tube (13) configured to change a pressure of the gas sprayed from the nozzle (12), and a chamber (14) into which the gas discharged from the Venturi tube (13) is introduced;

a first distribution plate (20) mounted at one side in the chamber (14) and including a plurality of flow paths (21) configured to mix, disperse, and diffuse air and the gas;

a second distribution plate (30) mounted on the chamber (14) to be spaced a predetermined distance from the first distribution plate (20) to prevent a backfire phenomenon, and including a slot (31) configured to mix, disperse, diffuse, and discharge air and the gas in an inward direction of an edge thereof;

a flame forming plate (40) mounted on the second distribution plate (30) and configured to disperse, diffuse, and discharge a mixture of the air and gas discharged from the slot (31) through a plurality of tiny holes; and

a mesh (50) mounted on the flame forming plate (40) and configured to diffuse combustion heat of the mixture discharged through the tiny holes.

2. The portable gas stove of claim 1, further comprising a bracket (60) mounted between the body (10) and the chamber (14) and configured to block and minimize heat of the chamber (14) from being transferred to the body (10).

3. The portable gas stove of claim 2, further comprising a gas pressure regulator (80) connected to a nozzle of a gas container (C) to maintain a pressure of a gas in a predetermined range and including an injection port (81) connected to the inlet (11) so that the gas flows and a spindle (82) configured to adjust a discharge rate of the gas to be in a predetermined range.

4. The portable gas stove of claim 3, further comprising a holding clip (63) provided under the bracket (60), elastically deformed by elasticity, and configured to fix the gas pressure regulator (80) to a lower side of the body.

5. The portable gas stove of claim 1, further comprising a protective cover (70) mounted between the body (10) and the mesh (50) to cover the chamber (14) and including a plurality of air holes (71) which are formed along a perimeter of the chamber (14) and through which air flows.

6. The portable gas stove of claim 2, further comprising a protective cover (70) mounted between the body (10) and the mesh (50) to cover the chamber (14) and including a plurality of air holes (71) which are formed along a perimeter of the chamber (14) and through which air flows.