Title of Invention	MULTIFUEL ECONOMIC OVEN-MACHINE
Abstract	Title: A multifuel oven. A multlfuei oven (1) having a particular application in the silk industry comprising: a brickword having a grate to define a combustion chamber and an ash passage; a plurality of cooking pans (2) adapted to be supported on a table or upper wall of said brickwork; a flue gas outlet; a drum (3) supported in said flue gas outlet (4); a first inlet configured for Introduction of a first fuel, in association with the gratings (13) when disposed at 35° angle a second inlet configured for introduction of a second fuel, in association with the gratings when disposed parallel to the cooking pans (9).

Title of Invention

MULTIFUEL ECONOMIC OVEN-MACHINE

Abstract

Title: A multifuel oven. A multlfuei oven (1) having a particular application in the silk industry comprising: a brickword having a grate to define a combustion chamber and an ash passage; a plurality of cooking pans (2) adapted to be supported on a table or upper wall of said brickwork; a flue gas outlet; a drum (3) supported in said flue gas outlet (4); a first inlet configured for Introduction of a first fuel, in association with the gratings (13) when disposed at 35° angle a second inlet configured for introduction of a second fuel, in association with the gratings when disposed parallel to the cooking pans (9).

Full Text	This invention relates to a muitifuel oven. The cottage basin reeling units normally use traditional designs for heating water and cooking of cocoons. These ovens are in-efficient with high fuel consumption and low heat utilization. Besides, most of the ovens in use are designed to burn only firewood. Such ovens traditionally used in cottage basin reeling industry are of open type and give out more smoke and heat. This makes the atmosphere in the reeling unit hot and smoky, thereby causing fatigue to the reeler. It was found that most of the reelers were using either firewood or husk as fuel depending on the availability. Some of Ihe reelers were having two separate ovens for firewood and soft fuels occupying more space. An object of this invention is to propose of a muitifuel oven for application in the silk industry. Another object of this invention is to propose of a muitifuel oven for application in the silk industry which can also be operable on soft-fuel. Yet another object of this invention is to propose of a muitifuel oven for application in the silk industry which is fuel efficient and smoke-free. Still another object of this invention is to propose of a muitifuel oven for application in the silk industry which provides a high degree of heat utilization. According to this invention, there is provided a multifuel oven (1) for application in the siik industry comprising: a. a brickwork having a grate to define a combustion chamber and an ash passage; b. a plurality of cooking pans (2) adapted to be supported an a table or upper wail of said brickwork; c. a flue gas outlet (4); d. a drum (3) supported in said flue gas outlet (4); e. a first inlet configured for introduction of a first fuel, in association with the gratings (13) when disposed at 35° angle. f. a second inlet configured for introduction of a second fuel, in association with the gratings when disposed parallel to the cooking pans (9). In accordance with'tt^invention, a large vessel Is disposed in the path of tiie flue gases which ensures maximum utilization of heat from the flue gases to heat water. This pre-heated water could be transferred into the cooking basins. The multifuel oven is smoke-free and occupies less space. Further objects and advantages of this invention will be more apparent from the ensuing description when read in conjunction with the accompanying drawings and wherein: Fig.l shows a front elevational view of ttie oven of the present invention; Fig.2 shows a cross-sectional view of the oven; and Fig.3 shows a plan view of the oven. The oven 1 of the present invention is preferably constructed from ordinary burnt bricks, mud, sand with jelly and cement. The size will be 43' x 94/106' x 35' (W X L X H) with 4/6 cooking pans 2 made out of copper , each of 8 litres capacity. There is provided 150 Itrs. Capacity SS drum 3 at the flue gas outlet 4 to utilize the flue gas which will be wasted in traditional ovens. The inside combustion chamber 5 has a volume of (2'x 3.4'x 1.50 10.2 Cu.ft. and the flue gas is let out through the storage water drum 3 and pre-heating of water upto a temperature of 60°C is possible. The space between the drum and inside brick wall is 3' alround for uniform flow of flue gas. The same gas is left to chimney 6 with a hoi 7 of 6'dla and 10'height. The chimney Is fixed at 3/4^ level of drum. In the combustion chamber, there is a gap of 10" to 11' between the grating 8 and tiie bottom (9) of cooking pans (2) is 8' to 9' from grating to foundation. The size of ash outlet 10 is 8'x 8'or 9" x 9'. The cooking pans are fixed to the concrete bed 11 of 3 thickness at a height of 17' from grating level. The pans are seated in such a way that the water split during cooking process flows towards the drain. There is a passage of 3" x 24" gap for husk/soft fuel flow with covering sheet and small hopper 12 of size 9' x 12' x 6'. The firewood feeding zone has an opening of 12' x 12" or 11' x 11' for feeding logs of firewood. For the purpose of feeding multifueis viz. soft fuel and firewood, a movable inclined step grating 13 is mounted at a distance of 24" ft-om the pre-heating drum zone/grating edge and mounted at an angle of 35° to the first two cooking pans with a distance of 6"/8" from the bottom edge to center of 26 1 / 2' x 32" (w x L) movable stepped inclined grating. During firewood feeding, the movable grating of inclined step grate 13 is brought parallel to cooking pans 9 to configure a second inlet and firewood is fed therein. To feed soft fuel, the same will be locked with the plates at an angle of 35° to configure a first inlet and ftjel in fed from top. When the bottom movable grate id opened, the top (soft fuel feeding mouth) Is closed while feeding firewood. The inclined grating is made out of MS of 1 / 4'x 1' 1-angle fi-ame with plates of size 1 / 4" x 3' x 24', 1 / 4" x 3' x 12", 1 / 4" x 3" x 7' fixed at an angle of 35°. The center movable 1 / 4" x 3' x 12" frame is called as movable grating and it can be locked parallel to other plates depending on the requirement of fuel to be fed. A tap 14 is fixed to the pre-heated water storage drum 3 for drawing the warm water or the same could be connected to basin and cooking pan for drawing water for reeling purpose and to save fuel. WE CLAIM 1. A multifuel oven (1) for application in the silk industry comprising: a. a brickword having a grate to define a combustion chamber and an ash passage; b. a plurality of cooking pans (2) adapted to be supported on a table or upper wall of said brickwork; c. a flue gas outlet (4); d. a drum (3) supported in said flue gas outlet (4); e. a first inlet configured for introduction of a first fuel, in association with the gratings (13) when disposed at 35° angle. f. a second inlet configured for introduction of a second fuel, in association with the gratings when disposed parallel to the cooking pans (9). 2. A multifuel oven as claimed in claim 1, wherein each of said Inlets is in flow communication witti the combustion chamber. 3. A multifuel oven as claimed in claim 2 wherein an Inclined grate (13) is provided with said second inlet. 4. A multifuel oven as claimed in claim 5, wherein said Inclined grate is disposed at an inclination of 35®. 5. A multifuel oven as claimed in claims 1 to 6 comprising a discharge door with said ash passage (10) for discharge of ash. 6. A multifuel oven as claimed in claims 1 to 7 wherein a water inlet is provided with said oven 7. A multifuei oven having a particular application in ttie silk industry substantially as herein described and illustrated with reference to the accompanying drawings.

Full Text

This invention relates to a muitifuel oven.
The cottage basin reeling units normally use traditional designs for heating water and cooking of cocoons. These ovens are in-efficient with high fuel consumption and low heat utilization. Besides, most of the ovens in use are designed to burn only firewood.
Such ovens traditionally used in cottage basin reeling industry are of open type and give out more smoke and heat. This makes the atmosphere in the reeling unit hot and smoky, thereby causing fatigue to the reeler. It was found that most of the reelers were using either firewood or husk as fuel depending on the availability. Some of Ihe reelers were having two separate ovens for firewood and soft fuels occupying more space.
An object of this invention is to propose of a muitifuel oven for application in the silk industry.
Another object of this invention is to propose of a muitifuel oven for application in the silk industry which can also be operable on soft-fuel.
Yet another object of this invention is to propose of a muitifuel oven for application in the silk industry which is fuel efficient and smoke-free.
Still another object of this invention is to propose of a muitifuel oven for application in the silk industry which provides a high degree of heat utilization.

According to this invention, there is provided a multifuel oven (1) for application in the siik industry comprising:
a. a brickwork having a grate to define a combustion chamber and an ash
passage;
b. a plurality of cooking pans (2) adapted to be supported an a table or
upper wail of said brickwork;
c. a flue gas outlet (4);
d. a drum (3) supported in said flue gas outlet (4);
e. a first inlet configured for introduction of a first fuel, in association with
the gratings (13) when disposed at 35° angle.
f. a second inlet configured for introduction of a second fuel, in association
with the gratings when disposed parallel to the cooking pans (9).
In accordance with'tt^invention, a large vessel Is disposed in the path of tiie flue gases which ensures maximum utilization of heat from the flue gases to heat water. This pre-heated water could be transferred into the cooking basins. The multifuel oven is smoke-free and occupies less space.
Further objects and advantages of this invention will be more apparent from the
ensuing description when read in conjunction with the accompanying drawings
and wherein:
Fig.l shows a front elevational view of ttie oven of the present invention;
Fig.2 shows a cross-sectional view of the oven; and
Fig.3 shows a plan view of the oven.

The oven 1 of the present invention is preferably constructed from ordinary burnt bricks, mud, sand with jelly and cement. The size will be 43' x 94/106' x 35' (W X L X H) with 4/6 cooking pans 2 made out of copper , each of 8 litres capacity. There is provided 150 Itrs. Capacity SS drum 3 at the flue gas outlet 4 to utilize the flue gas which will be wasted in traditional ovens. The inside combustion chamber 5 has a volume of (2'x 3.4'x 1.50 10.2 Cu.ft. and the flue gas is let out through the storage water drum 3 and pre-heating of water upto a temperature of 60°C is possible. The space between the drum and inside brick wall is 3' alround for uniform flow of flue gas. The same gas is left to chimney 6 with a hoi 7 of 6'dla and 10'height. The chimney Is fixed at 3/4*^ level of drum.
In the combustion chamber, there is a gap of 10" to 11' between the grating 8 and tiie bottom (9) of cooking pans (2) is 8' to 9' from grating to foundation. The size of ash outlet 10 is 8'x 8'or 9" x 9'. The cooking pans are fixed to the concrete bed 11 of 3* thickness at a height of 17' from grating level. The pans are seated in such a way that the water split during cooking process flows towards the drain.
There is a passage of 3" x 24" gap for husk/soft fuel flow with covering sheet and small hopper 12 of size 9' x 12' x 6'. The firewood feeding zone has an opening of 12' x 12" or 11' x 11' for feeding logs of firewood.
For the purpose of feeding multifueis viz. soft fuel and firewood, a movable inclined step grating 13 is mounted at a distance of 24" ft-om the pre-heating drum zone/grating edge and mounted at an angle of 35° to the first two cooking pans with a distance of 6"/8" from the bottom edge to center of 26 1 / 2' x 32" (w x L) movable stepped inclined grating.

During firewood feeding, the movable grating of inclined step grate 13 is brought parallel to cooking pans 9 to configure a second inlet and firewood is fed therein. To feed soft fuel, the same will be locked with the plates at an angle of 35° to configure a first inlet and ftjel in fed from top. When the bottom movable grate id opened, the top (soft fuel feeding mouth) Is closed while feeding firewood. The inclined grating is made out of MS of 1 / 4'x 1' 1-angle fi-ame with plates of size 1 / 4" x 3' x 24', 1 / 4" x 3' x 12", 1 / 4" x 3" x 7' fixed at an angle of 35°. The center movable 1 / 4" x 3' x 12" frame is called as movable grating and it can be locked parallel to other plates depending on the requirement of fuel to be fed.
A tap 14 is fixed to the pre-heated water storage drum 3 for drawing the warm water or the same could be connected to basin and cooking pan for drawing water for reeling purpose and to save fuel.

WE CLAIM
1. A multifuel oven (1) for application in the silk industry comprising:
a. a brickword having a grate to define a combustion chamber and an
ash passage;
b. a plurality of cooking pans (2) adapted to be supported on a table
or upper wall of said brickwork;
c. a flue gas outlet (4);
d. a drum (3) supported in said flue gas outlet (4);
e. a first inlet configured for introduction of a first fuel, in association
with the gratings (13) when disposed at 35° angle.
f. a second inlet configured for introduction of a second fuel, in
association with the gratings when disposed parallel to the cooking
pans (9).
2. A multifuel oven as claimed in claim 1, wherein each of said Inlets is in flow communication witti the combustion chamber.
3. A multifuel oven as claimed in claim 2 wherein an Inclined grate (13) is provided with said second inlet.
4. A multifuel oven as claimed in claim 5, wherein said Inclined grate is disposed at an inclination of 35®.
5. A multifuel oven as claimed in claims 1 to 6 comprising a discharge door with said ash passage (10) for discharge of ash.

6. A multifuel oven as claimed in claims 1 to 7 wherein a water inlet is
provided with said oven
7. A multifuei oven having a particular application in ttie silk industry
substantially as herein described and illustrated with reference to the
accompanying drawings.

Documents:

664-mas-1997 abstract-duplicate.pdf

664-mas-1997 abstract.pdf

664-mas-1997 claims-duplicate.pdf

664-mas-1997 claims.pdf

664-mas-1997 correspondence-others.pdf

664-mas-1997 correspondence-po.pdf

664-mas-1997 description (complete)-duplicate.pdf

664-mas-1997 description (complete).pdf

664-mas-1997 drawings.pdf

664-mas-1997 form-1.pdf

664-mas-1997 form-19.pdf

664-mas-1997 form-26.pdf

664-mas-1997 form-4.pdf

664-mas-1997 petition.pdf

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Patent Number

198438

Indian Patent Application Number

664/MAS/1997

PG Journal Number

30/2009

Publication Date

24-Jul-2009

Grant Date

Date of Filing

31-Mar-1997

Name of Patentee

THE DIRECTOR CENTRAL SILK TECHNOLOGICAL RESEARCH INSTITUTE,

Applicant Address

B.T.M; LAYOUT, MADIVALA, BANGALORE 560068

Inventors:

#	Inventor's Name	Inventor's Address
1	KP SHIVAKUMAR	C S T R I, C S B PANCHANANTALA, BERHAMPORE 742 101.
2	K R LAKSHMINARAYANA,	C S T R IM C S B, BTM LAYOUT, MADIVALA, BANGALORE 560068

PCT International Classification Number

F24C1/02

PCT International Application Number

N/A

PCT International Filing date

PCT Conventions:

#	PCT Application Number	Date of Convention	Priority Country
1			NA