TECHNICAL FIELD
[0001] The present disclosure relates to cook stove. More particularly, the present
disclosure relates to an improved forced draft-based cook stove that is thermally efficient, and that helps enhance fuel efficiency.
BACKGROUND
[0002] Background description includes information that may be useful in
understanding the present invention. It is not an admission that any of the information provided herein is prior art or relevant to the presently claimed invention, or that any publication specifically or implicitly referenced is prior art.
[0003] Combustion chamber is the part of an internal combustion engine or reaction
engine in which the fuel/air mix is burned. The combustion process increases the internal energy of a gas, which translates into an increase in temperature, pressure, or volume of the gas.
[0004] Currently the practice is that, the combustion chamber is made up of mild steel
and the problem with the mild steel combustion chamber is that the material of the
combustion chamber i.e., mild steel, started withering and the mild steel filing started mixing
with exhaust gas which causes irritation in the eyes. The proposed patent application provides
a solution for the said problem, replaced the material of combustion chamber so that it cannot
mixed with exhaust gas and does not cause irritation in the eyes due to long operation.
[0005] Another problem with the currently existing system is that, the shape of
combustion chamber was cylindrical as a result, primary air fan and secondary air fan were put under extra load of pushing out the gases produced in the combustion chamber. In a forced draught system, a blower is installed near the base of the boiler and air is forced to pass through the furnace, flues, economizer, air-preheater and to the stack. This draught system is known as positive draught system or forced draught system because the pressure and air is forced to flow through the system. The forced draught created by primary air fan was very less, due to this the fuel under combustion chamber was not burnt properly and combustion does not take place properly which results less efficiency of the stove and wastage of fuel. In present invention we change the shape of combustion chamber and increased the forced draught due to which the fuel under combustion chamber burn properly and also it will increase the efficiency.

[0006] There is therefore, a need in the art to provide a thermally efficient cook stove
that seeks to overcome or at least ameliorate one or more of the above-mentioned problems and other limitations of the existing solutions and utilize techniques, which are robust, accurate, fast, efficient, cost-effective and simple.
[0007] All publications herein are incorporated by reference to the same extent as if
each individual publication or patent application were specifically and individually indicated to be incorporated by reference. Where a definition or use of a term in an incorporated reference is inconsistent or contrary to the definition of that term provided herein, the definition of that term provided herein applies and the definition of that term in the reference does not apply.
[0008] In some embodiments, the numbers expressing quantities or dimensions of
items, and so forth, used to describe and claim certain embodiments of the invention are to be understood as being modified in some instances by the term "about." Accordingly, in some embodiments, the numerical parameters set forth in the written description and attached claims are approximations that can vary depending upon the desired properties sought to be obtained by a particular embodiment. In some embodiments, the numerical parameters should be construed in light of the number of reported significant digits and by applying ordinary rounding techniques. Notwithstanding that the numerical ranges and parameters setting forth the broad scope of some embodiments of the invention are approximations, the numerical values set forth in the specific examples are reported as precisely as practicable. The numerical values presented in some embodiments of the invention may contain certain errors necessarily resulting from the standard deviation found in their respective testing measurements.
[0009] As used in the description herein and throughout the claims that follow, 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.
[00010] The recitation of ranges of values herein is merely intended to serve as a
shorthand method of referring individually to each separate value falling within the range. Unless otherwise indicated herein, each individual value is incorporated into the specification as if it were individually recited herein. All methods described herein can be performed in any suitable order unless otherwise indicated herein or otherwise clearly contradicted by context. The use of any and all examples, or exemplary language (e.g. "such as") provided with respect to certain embodiments herein is intended merely to better illuminate the

invention and does not pose a limitation on the scope of the invention otherwise claimed. No language in the specification should be construed as indicating any non-claimed element essential to the practice of the invention.
[00011] Groupings of alternative elements or embodiments of the invention disclosed
herein are not to be construed as limitations. Each group member can be referred to and claimed individually or in any combination with other members of the group or other elements found herein. One or more members of a group can be included in, or deleted from, a group for reasons of convenience and/or patentability. When any such inclusion or deletion occurs, the specification is herein deemed to contain the group as modified thus fulfilling the written description of all groups used in the appended claims.
OBJECTS OF THE PRESENT DISCLOSURE
[00012] Some of the objects of the present disclosure, which at least one embodiment
herein satisfies are as listed herein below.
[00013] It is an object of the present disclosure to provide a thermally efficient cook
stove.
[00014] It is another object of the present disclosure to provide a thermally efficient
cook stove that is highly thermally efficient.
[00015] It is another object of the present disclosure to provide a thermally efficient
cook stove that enables reduction of fuel consumption by controlling mixture of air and fuel
for combustion.
[00016] It is another object of the present disclosure to provide a thermally efficient
cook stove with robust and rugged chamber that suffers negligible withering even after
extended period of time.
[00017] It is another object of the present disclosure to provide a thermally efficient
cook stove that exhibits natural draught of the exhausted gases based on the shape of the
chamber.
[00018] It is yet another object of the present disclosure to provide a thermally efficient
cook stove that enables controlling of air with the fuel to facilitate combustion of the fuel
efficiently.

SUMMARY
[00019] The present disclosure relates to cook stove. More particularly, the present
disclosure relates to an improved forced draft-based cook stove that is thermally efficient, and
that helps enhance fuel efficiency.
[00020] An aspect of the present disclosure provides a thermal efficient cook stove.
The stove includes: a chamber having a plurality of holes; a combustion grate disposed inside
the chamber at a predefined distance from top side of the chamber; a secondary fan fitted
with the chamber to flow ambient air through the plurality of holes into the chamber; a
primary fan fitted with the chamber such that the ambient air from the secondary fan is forced
towards the combustion grate to facilitate combustion of fuel on the combustion grate; and a
control unit operatively coupled to the primary fan and the secondary fan to control the speed
of the primary and the secondary fan to enable combustion of the fuel efficiently.
[00021] In an embodiment, the plurality of holes are arranged such that to form
plurality of concentric circles.
[00022] In an embodiment, the combustion grate is disposed on a platform such that
the combustion grate is at predefined distance from the top side of the chamber.
[00023] In an embodiment, the predefined distance is at least 255 mm.
[00024] In an embodiment, the efficiency of the stove is 39% approximately.
[00025] In an embodiment, the stove comprises a cylindrical gauzy having plurality of
holes, the gauzy is disposed on the combustion grate, and wherein the gauzy configured to
flow the ambient air from the primary through the plurality of holes of the gauzy to facilitate
combustion of the fuel.
[00026] In an embodiment, shape of the chamber is frustum such that base of the
frustum forms the base of the chamber, and wherein slant of the frustum helps generating a
draught to facilitate discharge of exhaust gases through an outlet of the chamber.
[00027] In an embodiment, material of the chamber is selected from a group
comprising of a steel, a cast iron and a wrought iron.
[00028] In an embodiment, the stove optimizes air and fuel ratio to reduce
consumption of the fuel thereby enhancing efficiency of the stove.
BRIEF DESCRIPTION OF THE DRAWINGS
[00029] 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.
[00030] FIGs. 1A through 1C illustrates exemplary representations of perspective
view, a front view and a top view respectively of a thermally efficient cook stove in accordance with an embodiment of the present disclosure.
DETAILED DESCRIPTION
[00031] 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.
[00032] In the following description, numerous specific details are set forth in order to
provide a thorough understanding of embodiments of the present invention. It will be apparent to one skilled in the art that embodiments of the present invention may be practiced without some of these specific details.
[00033] Embodiments of the present invention include various steps, which will be
described below. The steps may be performed by hardware components or may be embodied in machine-executable instructions, which may be used to cause a general-purpose or special-purpose processor programmed with the instructions to perform the steps. Alternatively, steps may be performed by a combination of hardware, software, and firmware and/or by human operators.
[00034] Various methods described herein may be practiced by combining one or more
machine-readable storage media containing the code according to the present invention with appropriate standard computer hardware to execute the code contained therein. An apparatus for practicing various embodiments of the present invention may involve one or more computers (or one or more processors within a single computer) and storage systems containing or having network access to computer program(s) coded in accordance with various methods described herein, and the method steps of the invention could be accomplished by modules, routines, subroutines, or subparts of a computer program product.

[00035] 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.
[00036] The present disclosure relates to cook stove. More particularly, the present
disclosure relates to an improved forced draft-based cook stove that is thermally efficient, and
that helps enhance fuel efficiency.
[00037] An aspect of the present disclosure provides a thermal efficient cook stove.
The stove includes: a chamber having a plurality of holes; a combustion grate disposed inside
the chamber at a predefined distance from top side of the chamber; a secondary fan fitted
with the chamber to flow ambient air through the plurality of holes into the chamber; a
primary fan fitted with the chamber such that the ambient air from the secondary fan is forced
towards the combustion grate to facilitate combustion of fuel on the combustion grate; and a
control unit operatively coupled to the primary fan and the secondary fan to control the speed
of the primary and the secondary fan to enable combustion of the fuel efficiently.
[00038] In an embodiment, the plurality of holes are arranged such that to form
plurality of concentric circles.
[00039] In an embodiment, the combustion grate is disposed on a platform such that
the combustion grate is at predefined distance from the top side of the chamber.
[00040] In an embodiment, the predefined distance is at least 255 mm.
[00041] In an embodiment, the efficiency of the stove is 39% approximately.
[00042] In an embodiment, the stove comprises a cylindrical gauzy having plurality of
holes, the gauzy is disposed on the combustion grate, and wherein the gauzy configured to
flow the ambient air from the primary through the plurality of holes of the gauzy to facilitate
combustion of the fuel.
[00043] In an embodiment, shape of the chamber is frustum such that base of the
frustum forms the base of the chamber, and wherein slant of the frustum helps generating a
draught to facilitate discharge of exhaust gases through an outlet of the chamber.
[00044] In an embodiment, material of the chamber is selected from a group
comprising of a steel, a cast iron and a wrought iron.
[00045] In an embodiment, the stove optimizes air and fuel ratio to reduce
consumption of the fuel thereby enhancing efficiency of the stove.
[00046] FIGs. 1A through 1C illustrates exemplary representation of perspective view,
a front view and a top view respectively of a thermally efficient cook stove in accordance
with an embodiment of the present disclosure.

[00047] In an embodiment, a thermal efficient cook stove 100 comprising a
combustion chamber 102. The combustion chamber 102 can include a plurality of holes 130.
Material of the combustion chamber 102 can include but not limited to a steel, a cast iron and
a wrought iron. The plurality of holes can be arranged on the combustion chamber such that
to form concentric circles to facilitate generating a forced draft of ambient air.
[00048] In an embodiment, the stove 100 further comprises a combustion grate
disposed inside the combustion chamber 102. The combustion grate can be disposed on a stand or support or a platform 124. The combustion grate can be disposed at a predefined distance from top side of the camber 102. Further, a cylindrical gauzy 118 having a plurality of holes 120 can be disposed on the combustion grate. The gauzy 118 configured to flow the ambient air for a primary fan 112 through the plurality of holes 120 to facilitate combustion of the fuel.
[00049] In an embodiment, the primary fan 112 can be fitted with the chamber 102.
The primary fan 120 can be fitted with the chamber 102 such that to enable flow of the ambient air from the primary fan through the plurality of holes 120 of the gauzy 118. Further a secondary fan 114 can be fitted with the chamber 102 such that the ambient air from the primary fan can be directed towards the combustion grate to mix the fuel with the ambient air to facilitate combustion of the fuel. Further, the stove 100 comprises a control unit 104 operatively coupled with the primary fan 112 and the secondary fan 114 to control speed of the fans 112, 114 to burn the fuel efficiently. Thereby, reducing wastage of the fuel by creating a forced draft of air using the two fans 112, 114. Further, presence of insulation 122 helps reducing wastage of energy to the ambience.
[00050] In an embodiment, the combustion chamber 102 can be shaped as frustum
such that base of the frustum forms the base of the chamber 102, and wherein slant of the frustum helps generating a draught to facilitate discharge of exhaust gases through an outlet of the chamber 102. In an embodiment, the stove optimizes air and fuel ratio to reduce consumption of the fuel thereby enhancing efficiency of the stove 100 i.e. the efficiency of the stove can be increased by 39% approximately.
[00051] In an embodiment, the stove 100 can include a hopper 108 for providing fuel
to the stove. The hopper 108 can be configured such that the fuel can be stored and the stored
fuel can be supplied efficiently. The hopper 108 can facilitate auto fuel supply to the stove
100. The hopper 108 can include an inlet 106 to receive the fuel in the hopper 108.
[00052] In an embodiment, the stove 100 can include an ash discharge mechanism 110
for discharging ash that gets deposited due to burning of the fuel. Further, the stove can

comprise handles 118 to facilitate holding of the stove 100 or for transportation of the stove. Further, the stove comprises bent angles fixed on top of the combustion chamber to support pot over the stove 100. Further, the stove 100 can include housing 116 for providing acovering to various components of the stove 100 thereby safeguarding the various components from damages.
[00053] 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 appended claims. Moreover, in interpreting both the specification and the claims, 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. Where the specification claims refers to at least one of something selected from the group consisting of A, B, C .... and N, the text should be interpreted as requiring only one element from the group, not A plus N, or B plus N, etc.
[00054] While the foregoing describes various embodiments of the invention, other and
further embodiments of the invention may be devised without departing from the basic scope thereof. The scope of the invention is determined by the claims that follow. The invention 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 invention when combined with information and knowledge available to the person having ordinary skill in the art
ADVANTAGES OF THE PRESENT DISCLOSURE
[00055] The present disclosure provides a thermally efficient cook stove.
[00056] The present disclosure provides a thermally efficient cook stove that is highly
thermally efficient.
[00057] The present disclosure provides a thermally efficient cook stove that enables
reduction of fuel consumption by controlling mixture of air and fuel for combustion.
[00058] The present disclosure provides a thermally efficient cook stove with robust
and rugged chamber that suffers negligible withering even after extended period of time.
[00059] The present disclosure provides a thermally efficient cook stove that exhibits
natural draught of the exhausted gases based on the shape of the chamber.

[00060] The present disclosure provides a thermally efficient cook stove that enables
controlling of air with the fuel to facilitate combustion of the fuel efficiently.

We Claims

1.A thermal efficient cook stove, said stove comprising:
a chamber having a plurality of holes;
a combustion grate disposed inside the chamber at a predefined distance from top side of the chamber;
a secondary fan fitted with the chamber to flow ambient air through the plurality of holes into the chamber;
a primary fan fitted with the chamber such that the ambient air from the secondary fan is forced towards the combustion grate to facilitate combustion of fuel on the combustion grate; and
a control unit operatively coupled to the primary fan and the secondary fan to control the speed of the primary and the secondary fan to enable combustion of the fuel efficiently.
2. The stove as claimed in claim 1, wherein the plurality of holes are arranged such that to form plurality of concentric circles.
3. The stove as claimed in claim 1, wherein the combustion grate is disposed on a platform such that the combustion grate is at predefined distance from the top side of the chamber.
4. The stove as claimed in claim 1, wherein the predefined distance is at least 255 mm.
5. The stove as claimed in claim 1, wherein the efficiency of the stove is 39% approximately.
6. The stove as claimed in claim 1, wherein the stove comprises a cylindrical gauzy having plurality of holes, the gauzy is disposed on the combustion grate, and wherein the gauzy configured to flow the ambient air from the primary fan through the plurality of holes of the gauzy to facilitate combustion of the fuel.
7. The stove as claimed in claim 1, wherein shape of the chamber is frustum such that base of the frustum forms the base of the chamber, and wherein slant of the frustum helps generating a draught to facilitate discharge of exhaust gases through an outlet of the chamber.
8. The stove as claimed in claim 1, wherein material of the chamber is selected from a group comprising of a steel, a cast iron and a wrought iron.

9. The stove as claimed in claim 1, wherein the stove optimizes air and fuel ratio to reduce consumption of the fuel thereby enhancing efficiency of the stove.