TW201541025A - Gas hot air gun head - Google Patents

Abstract

A gas hot air gun head of the present invention includes a fuel supply device and a flow-guiding device. The flow-guiding device includes a combustion base. One end of the combustion base is connected to the fuel supply device. A combustion chamber penetrates the combustion base for communicating two ends of the combustion base. The combustion base of the flow-guiding device is further provided with a first flow-guiding plate and a second flow-guiding plate. The first flow-guiding plate and the second flow-guiding plate are respectively located at the two ends the combustion base that are away from each other. A plurality of first holes penetrates the first flow-guiding plate. A plurality of second holes penetrates the second flow-guiding plate. A central axis of any one of the first holes and a central axis of any one of second holes are not collinear. When gas passes through the first flow-guiding plate and the second flow-guiding plate, a vortex is formed, thereby reducing flowing speed after the gas passes through the combustion base and preventing gas combustion flames from stretching out of the flow-guiding device.

Description

Gas hot air gun gun head

The invention mainly discloses a nozzle of a gas heat gun, in particular to a nozzle of a gas heat gun which avoids the flame tongue protruding out of the flow guiding device.

Please refer to the patent of No. I261100 of the Chinese Patent No. I261100 for improving the nozzle of a gas hot air tool, which comprises a body, a blower, an ignition device, a switch group and a nozzle; the body has a tube portion and a handle portion, and the tube A heating chamber and a mixing chamber are arranged in the part, and a blower and an ignition device are arranged in the tube portion, and a gas tank is arranged in the handle portion, the nozzle has a plurality of injection holes, and the start switch group is used to introduce the fluid in the gas tank into the nozzle. Inside, the injection chamber is sprayed into the mixing chamber through a plurality of nozzle holes, and a combustion gas which is sufficiently mixed with the air can be obtained before entering the heating chamber, and the complete combustion effect can be achieved in the heating chamber.

However, the wind blown by the gas hot air tool having the above structure is fast and extends in a straight line direction, and the flame tongue when the gas is burned is easily taken out of the air outlet with the hot air, so that the object hit by the hot wind is ignited, and the article is damaged. There are even security issues.

In view of the above-described deficiencies in the conventional structure, the inventors have invented a gun head of a gas heat gun which overcomes all of the disadvantages of the above-described conventional structure.

The main purpose of the nozzle of the gas heat gun of the present invention is to provide a gun head comprising a fuel supply device and a flow guiding device, the fuel supply device comprising an inlet portion and an outlet portion away from the inlet portion, the fuel supply A fuel passage is disposed in the device, the fuel passage penetrates the inlet portion and the outlet portion of the fuel supply device, and the flow guiding device is disposed at the outlet portion of the fuel supply device, the flow guiding device includes a combustion seat, and the combustion seat includes a first And a second end remote from the first end, the first end of the combustion seat is connected to the fuel supply device, the combustion seat is provided with a combustion chamber, and the combustion chamber is connected to the first end and the second end of the combustion seat, and the flow guiding device A first baffle and a second baffle are further disposed in the combustion seat, the first baffle and the second baffle are located in the combustion chamber, and the first baffle is adjacent to the first end of the combustion seat. The second baffle is adjacent to the second end of the combustion seat, the first baffle is provided with a plurality of first perforations, and the second baffle is provided with a plurality of second perforations, and any one of the plurality of first perforations Medium The axis is not collinear with the central axis of any one of the plurality of second perforations, and the gas can form a vortex when passing through the first baffle and the second baffle, thereby effectively reducing the flow of the gas after passing through the combustion seat. Speed, to avoid the flame tongue protruding from the gas guide when the gas is burning.

Other objects, advantages and novel features of the invention will become apparent from the description and appended claims.

The technology, means and functions of the present invention are described in detail with reference to the accompanying drawings.

1 and 2 are a perspective view and an exploded perspective view of a gun head of a gas heat gun of the present invention. The tip 10 of the present invention includes a fuel supply device 20 and a flow guiding device 30;

Please refer to FIG. 3 and FIG. 4 as a cross-sectional structural view of the gun head of the gas heat gun of the present invention. The fuel supply device 20 includes an inlet portion 21 and an outlet portion 22 remote from the inlet portion 21. A fuel passage 23 is formed in the fuel supply device 20, and the fuel passage 23 penetrates the inlet of the fuel supply device 20. The portion 21 and the outlet portion 22 allow the user to be connected to the fuel bottle 90 so that fuel in the fuel bottle 90 can flow from the inlet portion 21 to the outlet portion 22 via the fuel passage 23.

The fuel supply device 20 is provided with a flow guiding seat 24 in the fuel passage 23, and the flow guiding seat 24 includes a first end 241 and a second end 242 away from the first end 241. The flow guiding seat 24 A blocking wall 243 is disposed between the first end 241 and the second end 242, so that the first end 241 and the second end 242 of the baffle 24 are not in communication with each other, and a side of the baffle 24 is provided with a side The first side hole 244 is adjacent to the first side end 241 of the flow guiding seat 24, and the second side hole 245 is adjacent to the second end 242 of the flow guiding seat 24.

The fuel supply device 20 is further provided with a preheating tube 25, which is tubular. The two ends of the preheating tube 25 are respectively connected to the first side hole 244 and the second side hole 245 of the flow guiding seat 24. The preheating tube 25 communicates with the first end 241 and the second end 242 of the flow guiding seat 24, and the preheating tube 25 extends away from the inlet portion 21 of the fuel supply device 20. The fuel supply device 20 is also provided with a fuel nozzle 26 that is disposed at the second end 242 of the flow guide seat 24.

The fuel supply device 20 further includes an extension tube 27 and a retaining member 28 disposed at the outlet portion 22 of the fuel supply device 20 to connect the extension tube 27 and the fuel passage 23 to each other. The retaining member 28 is sleeved outside the extension tube 27, and the retaining member 28 is screwed to the outlet portion 22 of the fuel supply device 20.

The flow guiding device 30 is disposed at the outlet portion 22 of the fuel supply device 20. The flow guiding device 30 includes a combustion seat 31, an inner sleeve 32 and an outer sleeve 33. The combustion seat 31 is connected to the extension tube 27 The combustion seat 31 includes a first end 311 and a second end 312 away from the first end 311. The first end of the combustion seat 31 is connected to the fuel supply device 20, and the combustion seat 31 is at the first end. A combustion chamber 313 is disposed between the 311 and the second end. The combustion chamber 313 is connected to the first end 311 and the second end 312 of the combustion chamber 31. The combustion chamber 31 is provided with an outer ring of the combustion chamber 313. The outer ring wall 314 has a circular tubular shape. The combustion seat 31 has a plurality of abutting flanges 315 protruding from a side of the outer ring wall 314 away from the combustion chamber 313. The plurality of abutting protrusions The number of edges 315 in this embodiment is three.

The inner sleeve 32 has a circular shape. The inner sleeve 32 includes a first end 321 and a second end 322 away from the first end 321 . The first end 321 of the inner sleeve 32 is connected to the combustion seat. The second end 312 of the inner sleeve 32 is abutted against the three abutting flanges 315, and the inner sleeve 32 is integrally formed at a second end 322 in a bent manner. There are a plurality of spiral lobes 323 which are adjacent to each other in the circumferential direction of the inner sleeve 32. The spiral lobes 323 are formed with a first side 324 along the circumferential direction of the inner sleeve 32. And a second side 325 remote from the first side 324, the second side 325 of the helical flap 323 is spaced from the center of the inner sleeve 32 by a distance less than the first side 324 of the helical flap 323 to the center of the inner sleeve 32 The distance.

The outer sleeve 33 has a circular shape, and the outer sleeve 33 includes a first end 331 and a second end 332 away from the first end 331. The first end 331 of the outer sleeve 33 is sleeved outside the combustion seat 31. The first end 331 of the outer sleeve 33 abuts against the three abutting flanges 315 of the combustion seat 31. The outer sleeve 33 is simultaneously sleeved outside the inner sleeve 32, and the outer sleeve 33 is second. The end 332 is convexly provided with an abutment edge 333 that abuts against the first side 324 of the inner sleeve 32 helical flap 323.

The flow guiding device 30 further includes a first baffle 34 and a second baffle 35 in the combustion seat 31. The first baffle 34 and the second baffle 35 are located in the combustion chamber 313. The first baffle 34 is adjacent to the first end 311 of the combustion seat 31, the second baffle 35 is adjacent to the second end 312 of the combustion seat 31, the first baffle 34 and the second guide The flow sheet 35 is in the form of a circular sheet in this embodiment.

The first baffle 34 is provided with a plurality of first through holes 341. The number of the first plurality of through holes 341 is four in the embodiment. The first through hole 341 has a circular hole shape. The 341 has a first diameter D1. The second baffle 35 is provided with a plurality of second through holes 351. The number of the plurality of second through holes 351 is smaller than the number of the plurality of first through holes 341, and the plurality of second through holes 351 In the present embodiment, the number is three, and the central axis of any one of the four first through holes 341 and the central axis of any one of the three second through holes 351 are not collinear, the second The through hole 351 has a circular hole shape, and the second through hole 351 has a second diameter D2 which is smaller than the first diameter D1.

The second baffle 35 is also provided with a plurality of third through holes 352. The number of the plurality of third through holes 352 is equal to the number of the plurality of second through holes 351, and the plurality of third through holes 352. In the present embodiment, the number is three, and the central axis of any one of the four first through holes 341 and the central axis of any one of the three third through holes 352 are not collinear, the three The third through hole 352 and the three second through holes 351 are staggered with each other, the third through hole 352 has a circular hole shape, and the third through hole 352 has a third diameter D3, and the third diameter D3 is smaller than the second diameter. D2.

Please refer to FIG. 5 and FIG. 6 for further use of the gun head of the gas heat gun of the present invention. When the tip 10 is in use, the inlet portion 21 of the fuel supply device 20 is first connected to the fuel bottle 90, so that gas in the fuel bottle 90 can flow from the inlet portion 21 to the outlet portion 22 via the fuel passage 23. At this time, the gas will flow further into the combustion seat 31 of the flow guiding device 30, and the user can ignite the gas in the fuel chamber 313, and the gas will continuously move during the combustion process, so that the gas combustion heats the inner sleeve. The gas in the tube 32 also pushes air toward the second end 322 of the inner sleeve 32, and the tip 10 is capable of blowing hot air from the second end 322 of the inner sleeve 32.

When the gas into the combustion seat 31, the gas must pass through the first baffle 34 and the second baffle 35 in sequence, because the first perforation 341 and the second guide of the first baffle 34 The second through holes 351 or the third through holes 352 of the flow sheet 35 do not correspond to each other, so that eddy current can be formed in the inner sleeve 32, effectively reducing the flow velocity of the gas after passing through the combustion seat 31, and avoiding the burning of the gas. The fire tongue projects out of the flow guiding device 30.

As far as the above is concerned, it can be concluded that the present invention has the following advantages:

1. The gun head of the gas heat gun of the present invention, wherein the gun head comprises a fuel supply device and a flow guiding device, the fuel supply device comprising an inlet portion and an outlet portion away from the inlet portion, the fuel supply device is worn a fuel passage is provided, the fuel passage is through the inlet portion and the outlet portion of the fuel supply device, and the flow guiding device is disposed at the outlet portion of the fuel supply device, the flow guiding device includes a combustion seat, and the combustion seat includes a first end and a A first end of the combustion seat is connected to the fuel supply device, the combustion seat is provided with a combustion chamber, the combustion chamber is connected to the first end and the second end of the combustion seat, and the flow guiding device is disposed at the combustion seat. A first baffle and a second baffle are further disposed. The first baffle and the second baffle are located in the combustion chamber, and the first baffle is adjacent to the first end of the combustion seat, and the second guide The flow sheet is adjacent to the second end of the combustion seat, the first baffle is provided with a plurality of first perforations, and the second baffle is provided with a plurality of second perforations, a central axis of any one of the plurality of first perforations With the above The central axis of any of the two perforations is not collinear, and the gas can form a vortex when passing through the first baffle and the second baffle, thereby effectively reducing the flow velocity of the gas after passing through the combustion seat, and avoiding gas burning. The fire tongue protrudes out of the flow guiding device.

The above is only the preferred embodiment of the present invention, and the scope of the present invention is not limited thereto, so that the numerical value is changed or the equivalent element is replaced, or the equivalent of the scope of the patent application of the present invention. Changes and modifications are still within the scope of the invention patent.

10‧‧‧ gun head
20‧‧‧fuel supply unit
21‧‧‧ Entrance Department
22‧‧‧Exports Department
23‧‧‧ fuel passage
24‧‧ ‧ diversion seat
241‧‧‧ first end
242‧‧‧ second end
243‧‧‧Block wall
244‧‧‧ first side hole
245‧‧‧Second side hole
25‧‧‧Preheating tube
26‧‧‧ fuel nozzle
27‧‧‧ Extension tube
28‧‧‧Removal parts
30‧‧‧ flow guiding device
31‧‧‧ burning seat
311‧‧‧ first end
312‧‧‧ second end
313‧‧‧ combustion chamber
314‧‧‧ outer ring wall
315‧‧‧Abut the flange
32‧‧‧Inner casing
321‧‧‧ first end
322‧‧‧ second end
323‧‧‧Spiral flap
324‧‧‧ first side
325‧‧‧ second side
33‧‧‧Outer casing
331‧‧‧ first end
332‧‧‧ second end
333‧‧‧Affinity
34‧‧‧First guide vane
341‧‧‧First perforation
35‧‧‧Second deflector
351‧‧‧Second perforation
352‧‧‧ third perforation
90‧‧‧ fuel bottle
D1‧‧‧first diameter
D2‧‧‧second diameter
D3‧‧‧ third diameter

Figure 1 is a perspective view of a liquid fuel burning device with a safety cover according to the present invention. Fig. 2 is an exploded perspective view showing the safety cover of the liquid fuel burning device with safety cover according to the present invention. Figure 3 is a cross-sectional structural view of a liquid fuel burning device with safety cover according to the present invention. Figure 4 is a schematic view showing the operation of filling the fuel in the liquid fuel burning device with safety cover according to the present invention. Fig. 5 is a view showing the state of use of the fuel-burning device with safety cover of the present invention filled with fuel. Fig. 6 is a view showing the state of use of the igniting and burning device of the liquid fuel burning device with safety cover according to the present invention.

10‧‧‧ gun head

20‧‧‧fuel supply unit

22‧‧‧Exports Department

24‧‧ ‧ diversion seat

241‧‧‧ first end

242‧‧‧ second end

244‧‧‧ first side hole

245‧‧‧Second side hole

25‧‧‧Preheating tube

26‧‧‧ fuel nozzle

27‧‧‧ Extension tube

28‧‧‧Removal parts

30‧‧‧ flow guiding device

31‧‧‧ burning seat

311‧‧‧ first end

312‧‧‧ second end

313‧‧‧ combustion chamber

314‧‧‧ outer ring wall

315‧‧‧Abut the flange

32‧‧‧Inner casing

321‧‧‧ first end

322‧‧‧ second end

323‧‧‧Spiral flap

324‧‧‧ first side

325‧‧‧ second side

33‧‧‧Outer casing

331‧‧‧ first end

332‧‧‧ second end

333‧‧‧Affinity

34‧‧‧First guide vane

341‧‧‧First perforation

35‧‧‧Second deflector

351‧‧‧Second perforation

352‧‧‧ third perforation

Claims (10)

A gun of a gas heat gun includes: a fuel supply device including an inlet portion and an outlet portion away from the inlet portion, wherein the fuel supply device is provided with a fuel passage, a fuel passage penetrating the inlet portion and the outlet portion of the fuel supply device; a flow guiding device disposed at an outlet portion of the fuel supply device, the flow guiding device including a combustion seat, the combustion seat including a first One end and a second end remote from the first end, the first end of the combustion seat is connected to the fuel supply device, and the combustion seat is provided with a combustion chamber that communicates with the first end of the combustion seat The second end, the flow guiding device further comprises a first baffle and a second baffle in the combustion seat, wherein the first baffle and the second baffle are located in the combustion chamber, The first baffle is adjacent to the first end of the combustion seat, the second baffle is adjacent to the second end of the combustion seat, and the first baffle is provided with a plurality of first perforations, the second baffle is worn There are several second perforations, The central axis of the central axis of any one of any one of the plurality of perforations in said first plurality of second perforations neither collinear. The head of a gas heat gun according to claim 1, wherein the first perforation has a first diameter and the second perforation has a second diameter, the second diameter being smaller than the first diameter. The nozzle of the gas heat gun of claim 2, wherein the second baffle is further provided with a plurality of third perforations, the number of the third perforations being equal to the plurality of second perforations The number, the central axis of any one of the plurality of first perforations and the central axis of any one of the plurality of third perforations are not collinear, the plurality of third perforations and the plurality of second The perforations are staggered with each other, the third perforation having a third diameter, the third diameter being smaller than the second diameter. The gun head of the gas heat gun of claim 3, wherein the number of the plurality of second perforations is less than the number of the plurality of first perforations. The gun head of a gas heat gun according to any one of claims 1 to 4, wherein the flow guiding device comprises an inner sleeve and an outer sleeve, the combustion seat is provided with an outer ring wall in the combustion chamber ring The combustion seat has a plurality of abutting flanges protruding from a side of the outer ring wall away from the combustion chamber, the inner sleeve includes a first end and a second end away from the first end, the inner sleeve a first end of the tube is coupled to the second end of the combustion seat, and the first end of the inner sleeve abuts against the plurality of abutting flanges, the outer sleeve includes a first end and a distance away from the a first end of the first end, the first end of the outer sleeve is sleeved outside the combustion seat, and the first end of the outer sleeve abuts against a plurality of abutting flanges of the combustion seat, the outer sleeve simultaneously The sleeve is sleeved outside the inner sleeve. The gun head of the gas heat gun according to claim 5, wherein the inner sleeve is integrally formed at a second end in a bent manner to form a plurality of spiral flaps, and the plurality of spiral flaps are along the inner sleeve The circumferential direction is adjacent to each other, the spiral flap is formed with a first side along a circumferential direction of the inner sleeve and a second side away from the first side, the second side of the spiral flap to the inner sleeve The distance of the center is smaller than the distance from the first side of the spiral flap to the center of the inner sleeve, and the second end of the outer sleeve protrudes inwardly with an abutting edge, the abutting edge abuts the inner casing spiral flap The first side of the piece. The nozzle of a gas heat gun according to claim 6, wherein the fuel supply device is provided with a flow guiding seat in the fuel passage, the flow guiding seat includes a first end and a first distance away from the first end a second end, the flow guiding seat is provided with a blocking wall between the first end and the second end, so that the first end and the second end of the baffle are not connected to each other, and a side of the baffle is provided with a side a first side hole and a second side hole, the first side hole is adjacent to the first end of the flow guiding seat, the second side hole is adjacent to the second end of the flow guiding seat, and the fuel supply device is further provided with a pre- a heat pipe, the preheating pipe has a tubular shape, and two ends of the preheating pipe are respectively connected to the first side hole and the second side hole of the flow guiding seat, and the preheating pipe communicates with the first end and the first end of the flow guiding seat At the two ends, the preheating tube extends in a direction away from the inlet portion of the fuel supply device. The gun head of the gas heat gun according to claim 7, wherein the fuel supply device is further provided with a fuel nozzle, and the fuel nozzle is disposed at the second end of the flow guiding seat. The gun head of the gas heat gun according to claim 8, wherein the fuel supply device further comprises an extension tube and a retaining member, the extension tube is disposed at an outlet portion of the fuel supply device, and the extension tube and the extension tube are The fuel passages are connected to each other, the combustion seat is connected to the extension pipe, the retaining member is sleeved outside the extension pipe, and the retaining member is screwed to the outlet portion of the fuel supply device. The gun head of the gas heat gun according to claim 9, wherein the first baffle and the second baffle are in a circular shape, the first perforation is in the shape of a round hole, and the second perforation is round a hole shape, the third through hole is in the shape of a circular hole, the number of the plurality of first perforations is four, the number of the plurality of second perforations is three, and the outer ring wall has a circular tube shape. The number of the plurality of abutting flanges is three, and the inner sleeve has a round tubular shape, and the outer sleeve has a circular tubular shape.