DESC:FIELD OF THE INVENTION:
The present invention generally relates to an apparatus for the removal of hazardous fumes and gases generated during welding or brazing operations inside the workshop. More particularly, the present invention relates to a portable fume extraction device for use within workshops and submarine compartments.

BACKGROUND OF THE INVENTION:
Welding is an essential metal joining operation of many industries such as the automotive industry, the shipbuilding industry, the aviation industry, and more. This is due to its high degree of flexibility, which enables the welding of a wide range of materials and thicknesses, as well as its significant potential for automation and robotization.

However, it is also a substantial source of the emissions of harmful gases and toxic fumes. During welding or other metal joining processes such as brazing, fumes and particles are emitted into the breathing zone of the operator. Welders continue to be exposed to dangerous welding fumes and gases in spite of advancements in automation and control technology.

Generally, a compressed air hose pipe is used for blowing off the hazardous fumes and gases are generated during welding/brazing.

The Patent No. KR20080031605A discloses a small high performance dust collector provided to collect fume generated during an arc welding operation, fine dust/mist generated from cutting machines, grinding machines or the like, fine dust such as wheat flour, and non-viscous light dust such as plastics. The said dust collector comprises a collection unit(10) for collecting the mist and dust by sucking in fume, mist and dust generated by welding together with ambient air from a suction pipe (5); and a Roots blower (55) for allowing a negative pressure to be maintained in a case (11) of the collection unit and outwardly exhausting the air that have passed through the collection unit, the dust collector is characterized in that the collection unit further comprises: a rotational shaft (26) which is rotatably installed in a housing (19) of the case and disposed to face an inner part of the case; a rotary filter (31) which is mounted on a distal end of the rotational shaft and includes a cylindrical porous core and a filter material (34) mounted on an outer periphery of the core, the filter material having a plurality of walls made of non-woven fabric with a mesh range of 0.3 mum to 1.0 mum formed in a continuous zigzag shape; a motor (23) for rotating the rotary filter at a predetermined rotation speed; an air blowing nozzle (51) for cleaning the filter by ejecting, onto an outer peripheral surface of the rotary filter, pressure air generated by driving the Roots blower in the reverse direction; and a recovery bag (45) for receiving dust removed from the rotary filer during cleaning by the air blowing nozzle, the recovery bag being detachably installed on a lower part of the case.

The Patent No. JP4112441B2 discloses a screen tank provided with a suction hose for sucking mist and dust containing oil and moisture, and a positive displacement blower capable of forward / reverse switching operation. Connected to the suction side of the positive displacement blower to collect the mist and dust in the air sucked from the suction hose during the forward rotation of the positive displacement blower. It is provided to wash the internal filter by discharging the outside air sucked during operation into the screen tank, and a dust-removing unit is provided at the bottom of the screen tank for collecting the dust settled by the washing.

The above given prior arts disclose the fume collector that includes a convoluted structure and a relatively sizeable product, which not only wastes space but also is ineffective and provides less mobility.

In order to solve the above-mentioned problem a portable fume extraction device of the present invention is convenient to use and can be easily accommodated.

The present invention overcomes the drawbacks of the above-mentioned prior arts. However, there are many shortcomings with the above-mentioned prior arts. The present invention helps to overcome the shortcomings of the designs of the above-mentioned prior arts.

SUMMARY OF THE INVENTION:
The principal object of the present invention is to provide a device for removing hazardous fumes and gases generated during welding or brazing operation inside the workshop and within the submarine compartments.

Another object of the present invention is to provide a device that comprises multiple outlets for compressed air which can forcefully remove all unwanted fumes and gases generated during welding or brazing.

One of the objects of the present invention is to provide a device that can accommodate anywhere in the workshop or the constrained space of the submarine chamber.

Yet another object of the present invention is to provide an air chamber with an air inlet and air outlet for flow of compressed air, in order to remove toxic gases and fumes.

Accordingly, the present invention discloses a portable fume extraction device which comprises an air chamber housed within a housing, having at least one inlet to breathe an air, and plurality of outlets to for blowing air that contains hazardous elements.

BRIEF DESCRIPTION OF DRAWINGS:
The objects, features, and advantages of the invention will best be understood from the following description of various embodiments thereof, selected for purposes of illustration, and shown in the accompanying figure.
FIG. 1: Perspective view of the portable fume extraction device of the present invention.
FIG. 2: Top view of the portable fume extraction device showing the air outlet holes inside the air chamber.
List of reference numerals
Part ref Description
100 Portable fume extraction device
11 Hollow conical body
12 Air chamber
13 Air inlet passage
14 First handle
15 Second handle
16 Air outlet holes

DETAILED DESCRIPTION OF THE INVENTION:
The invention is described herein in detail with the help of figures appended at the end of the specification. The figures illustrate the preferred embodiment as well as other embodiments that define the scope of the present invention. However, it may be understood that the figures presented herein are intended to exemplify the scope of the invention only. The person skilled in art may note that by no means the figures limit the scope of the invention. Any variation in the drawings by any other person will be falling in the scope of the present invention.

The principal embodiment of the present invention is to provide a portable fume extraction device 100 for removing hazardous fumes and gases generated during welding or brazing operation. The portable fume extraction device 100 uses compressed air for removing the toxic gases and fumes generated during welding or brazing operation.

In a preferred embodiment, the portable fume extraction device comprises an air chamber housed within a housing, having at least one inlet to breathe an air, and plurality of outlets to for blowing air that contains hazardous elements.

As shown in FIG. 1, the present invention discloses the perspective view of the portable fume extraction device 100. The portable device 100 consists of a hollow conical body 11, an air chamber 12 with an air inlet passage 13 connected to the hollow conical body 11, a first handle 14, and a second handle 15 provided on both sides of the hollow conical body 11 for holding the portable device 100.

Fig. 2 illustrates the top view of the portable fume extraction device 100. The air chamber 12 comprises the air inlet passage 13 outside the air chamber and a plurality of air outlet holes provided inside the air chamber 12. In air chamber 12, air enters through an air inlet passage 13 and leaves through the plurality of air outlet holes 16. Through the plurality of air outlet holes 16, compressed air is used to remove all the unwanted fumes and gases generated during the welding or brazing process.

In a preferred embodiment according to the present invention, a portable fume extraction device 100 comprises, a hollow conical body 11; an air chamber 12 connected to one end of said hollow conical body 11, comprising an air inlet passage 13 and plurality of air outlet holes 16; a first handle 14 and a second handle 15 provided on both sides of said hollow conical body 11; wherein said air chamber 12 is welded to one end of said hollow conical body 11.

In a same preferred embodiment according to the present invention, said air inlet passage 13 is provided on the outer surface of said air chamber 12.

In a same preferred embodiment according to the present invention, said air inlet passage 13 is connected to external compressed air hose pipe.

In a same preferred embodiment according to the present invention, said plurality of air outlet holes 16 is provided inside said air chamber 12 for forceful removal of the generated toxic gases and fumes.
.
In a same preferred embodiment according to the present invention, said hollow conical body 11 is selected from MS steel material.

In a most preferred embodiment, the air chamber is fabricated with the help of 5 mm thick plates having the air inlet outside & at least seven the air outlet holes inside. This air chamber is welded with hollow conical tube with height 900 mm with conical diameters 200 mm & 350 mm. This conical tube is provided with handle on both sides for easy carrying inside workshop or in the confined space of the Submarine Compartments.

Advantages:
1. This device can forcefully remove all unwanted fumes & gases generated during welding or brazing operations.
2. The device is portable & flexible to carry out at any corner of the workshop / confined space in the submarine chamber.
,CLAIMS:1. A portable fume extraction device 100 comprising,
a hollow conical body 11;
an air chamber 12 connected to one end of said hollow conical body 11, comprising an air inlet passage 13 and plurality of air outlet holes 16;
a first handle 14 and a second handle 15 provided on both sides of said hollow conical body 11;
wherein said air chamber 12 is welded to one end of said hollow conical body 11.

2. The device 100 as claimed in claim 1, wherein said air inlet passage 13 is provided on the outer surface of said air chamber 12.

3. The device 100 as claimed in claim 2, wherein said air inlet passage 13 is connected to external compressed air hose pipe.

4. The device 100 as claimed in claim 1, wherein said plurality of air outlet holes 16 is provided inside said air chamber 12.

5. The device 100 as claimed in claim 1, wherein said hollow conical body 11 is selected from MS steel material.