CN111043612B

CN111043612B - Smoke removing device

Info

Publication number: CN111043612B
Application number: CN201811195780.4A
Authority: CN
Inventors: 黄重景; 黄锦颖; 黄信铭; 黄信雄; 叶严仁; 林冠州
Original assignee: Grand Mate Co Ltd
Current assignee: Grand Mate Co Ltd
Priority date: 2018-10-15
Filing date: 2018-10-15
Publication date: 2022-01-07
Anticipated expiration: 2038-10-15
Also published as: CN111043612A

Abstract

A smoke abatement device can effectively burn particles in smoke, and comprises a tube body and a combustion device, wherein the combustion device is arranged in the tube body and comprises a main body, a gas pipeline and an igniter; the main body of the combustion device is positioned at the first end of the pipe body, a smoke exhaust channel is formed between the outer wall of the main body and the inner wall of the pipe body at the position of the main body, and smoke enters the smoke removal device through the smoke exhaust channel; the main body is internally provided with a central passage which penetrates through the top surface and the bottom surface and is a part where gas is ignited, the gas is firstly guided to the central passage through a gas pipeline, then an igniter ignites the gas to generate flame, and the flame is contacted with smoke passing through the smoke exhaust passage to burn particles in the smoke.

Description

Smoke removing device

Technical Field

The present invention relates to smoke abatement apparatus; in particular to a smoke removing device which can effectively burn particles in smoke.

Background

The existing combustion devices (such as a burner, a gold furnace or a coffee bean roaster) generate particles during the process of burning the substances, the heat energy provided by the combustion device changes the density of the air so as to generate airflow and form smoke, and the particles are filled in the smoke, and finally discharged out of the combustion device along with the smoke and float in the air.

The smoke scattered in the air can cause environmental pollution, the particles are small in size and light in weight and can easily move along with the air flow, so that the opportunity of biological inhalation is increased, when the respiratory tract is stimulated by the particles, the body can generate uncomfortable reactions (such as asthma and allergy), some particles can be attached to the lung and can not be discharged, so that more serious respiratory tract related diseases (such as bronchitis and pneumonia) can be caused, in addition, part of smoke not only contains the particles, but also contains toxic metal carcinogens, so that the body discomfort can be caused, and even the carcinogenic risk can be caused.

The known solution is to add a filter element or a filter screen to the smoke exhaust path of the combustion device for filtering the particles in the smoke, however, the filter element or the filter screen needs to be replaced after a certain period of use to ensure the filtering quality, but the cost of filtering using the filter element or the filter screen is high, and the replacement operation is not easy, especially when the combustion device is bulky, the disadvantages are more obvious, and therefore, the use of the filter element or the filter screen is not preferable and practical.

Disclosure of Invention

In view of the above, the present invention provides a smoke abatement device which can effectively burn particles in smoke.

In order to achieve the above object, the present invention provides a smoke abatement device comprising a tube and a combustion device, wherein the combustion device is disposed in the tube and comprises a main body, a gas pipeline and an igniter; the main body of the combustion device is positioned at the bottom of the pipe body, a smoke exhaust channel is formed between the outer wall of the main body and the inner wall of the pipe body at the position of the main body, and smoke enters the smoke removal device through the smoke exhaust channel; the main body is internally provided with a central passage which penetrates through the top surface and the bottom surface and is a part where gas is ignited, the gas is firstly guided to the central passage through a gas pipeline, then an igniter ignites the gas to generate flame, and the flame is contacted with smoke passing through the smoke exhaust passage to burn particles in the smoke.

The invention has the advantages of increasing the contact efficiency of particles with the flame of the combustion device when the particles pass through the smoke exhaust channel and reducing the possibility that the gas released by the gas pipeline is influenced by the airflow formed by the passing of the particles.

Drawings

Fig. 1 is a perspective view of a smoke abatement device in accordance with a first preferred embodiment of the present invention.

Fig. 2 is a sectional view taken in the direction 2-2 in fig. 1.

Figure 3 is an enlarged view of the combustion device of the smoke abatement device of figure 2.

FIG. 4 is similar to FIG. 2 and shows the direction of the smoke exiting the combustion device.

Figure 5 is a cross-sectional view of a smoke abatement device in accordance with a second preferred embodiment of the present invention.

Figure 6 is a perspective view of a portion of the components of the smoke abatement device of figure 5.

Figure 7 is a cross-sectional view of a smoke abatement device in accordance with a third preferred embodiment of the present invention.

Figure 8 is an enlarged view of the combustion device of the smoke abatement device of figure 7.

[ legend of main assembly symbols in the drawings ] for the embodiments of the present disclosure

100 smoke removing device

10 base

10a fixed part 10b chamber

12 outer cylinder

12a heat dissipation hole

14 pipe body

16 convergent tube

18 guide vane

20 main body

20a side hole

22 gas pipeline

22a nozzle

23 connecting pipe

24 igniter

24a main body 24b electric heating rod

26 Venturi tube

26a outer cover

28 connecting pipe

100A smoke removing device

30 heat insulation layer

32 extension pipe

32a flame hole

34 flame shield

34a flame hole

36 support

100B smoke removing device

38 heat accumulation net

40 flame baffle

42 bolt and nut

44 wind-proof nozzle

44a inlet end 44b and an outlet end

C smoke exhaust channel G central channel L axis

I gas discharge F air flow direction

Detailed Description

In order that the invention may be more clearly described, preferred embodiments will now be described in detail with reference to the accompanying drawings. Fig. 1 to 4 are perspective views of a smoke abatement device 100 according to a first embodiment of the present invention.

The smoke abatement device 100 includes a base 10, an outer cylinder 12, a tube 14, a converging tube 16, a guide vane 18, and a combustion device. The base 10 is a hollow structure and has a fixing portion 10a and a containing chamber 10b, the upper portion of the base 10 is connected with the outer cylinder 12, and the fixing portion 10a is located in the outer cylinder 12; the outer cylinder 12 has a plurality of heat dissipation holes 12 a; the first end of the tube 14 is connected to the fixing portion 10a of the base 10, and the second end of the tube 14 is connected to the tube 16, so that the base 10, the tube 14 and the tube 16 are connected to each other. The guide vanes 18 are disposed in the chamber 10b of the base 10 and distributed around the combustion apparatus.

The combustion apparatus comprises a main body 20, a gas line 22, an igniter 24 and a venturi 26. The main body 20 is located at the first end of the tube 14 and disposed in the accommodating chamber 10b of the base 10, and a smoke discharge channel C is formed between the outer peripheral surface of the main body 20 and the inner wall of the tube 14, and between the outer peripheral surface of the main body 20 and the inner wall of the base 10.

Referring to FIG. 3, the main body 20 has a central channel G penetrating the top and bottom surfaces and the central channel is tapered; the gas line 22 has one end connected to a gas source (not shown) and the other end provided with a connection pipe 23, the connection pipe 23 passing through the bottom surface of the body 20 and extending into the central passage and forming a gas discharge port, and being connected with a nozzle 22a, the gas line 22 can guide gas into the central passage G.

The igniter 24 is disposed in the central passage G and the heating end of the igniter 24 is located above the gas discharge port of the gas pipeline 22 for igniting the gas in the central passage G, the igniter 24 in this embodiment has a main body 24a and an electric heating rod 24b, the electric heating rod 24b is used as the heating end of the igniter 24, the power is transmitted to the electric heating rod 24b through the main body 24a, the electric heating rod 24b converts the electric energy into heat energy, the electric heating rod 24b in a high temperature state is used for igniting the gas in the central passage G, so that the flame contacts the smoke passing through the smoke discharge passage C, and the igniter 24 can ignite the gas in other manners (for example, a spark generated by a high voltage power supply) in practical applications.

The venturi 26 is located in the central passage G of the body 20, one end of the venturi 26 is connected to the top of the body 20 through an outer cap 26a, and the other end extends toward the bottom of the body 20, and the venturi 26 is located above the gas discharge port of the gas line 22, and the venturi 26 has a tapered portion whose aperture is smaller than that of the other portion of the venturi, so that the flow rate of the gas is increased when the gas passes through the portion where the aperture is small. The venturi 26 and the cover 26a may be integrally formed with the body 20.

The side wall of the main body 20 of the combustion device has a side hole 20a, but not limited to this number, the side hole 20a is used for allowing external air to enter the central channel G, the side hole 20a is located above the gas discharge port and corresponds to the wall of the venturi tube, and the aperture of the central channel G near the side hole 20a is larger than that of the central channel G near the gas discharge port, if combustion air is insufficient, a blowing device (not shown) located outside the smoke abatement device 100 can be connected through a connecting pipe 28 by the side hole 20a, the blowing device can accelerate the air needed for providing a heat source, the air flows around the outer wall of the venturi tube 26 after entering the main body 20, and when flowing to the end of the venturi tube 26 extending towards the bottom of the main body 20, the air enters the inside of the venturi tube 26 together with the gas, and the arrow F marked in the figure is the air flow direction.

The guide vanes 18 are used for rotating the smoke entering the pipe body 14 along the reference axis L (see fig. 4), and the rotating smoke airflow can be more easily contacted with a heat source generated by the combustion device to be combusted, so that the residual quantity of particles in the smoke is reduced, and the pollution of the particles to the environment is reduced.

In summary, by the design of the combustion device, the particles in the smoke can be completely combusted by the flame generated by the combustion device when passing through the smoke exhaust channel C, and it is noted that by the arrangement positions of the main body 20, the gas pipeline 22 and the igniter 24 in the combustion device, the gas is not disturbed by the smoke passing through the smoke exhaust channel C when leaving the gas discharge port, thereby eliminating the situation that the gas concentration is reduced due to the disturbance of the smoke, and the situation that the igniter 24 cannot ignite the gas due to the low-concentration gas occurs; and the space between the tube 14 and the outer cylinder 12 is used to slow down the temperature rise of the outer cylinder 12 due to the heat conduction released by the tube 14, so as to avoid the scald caused by the user touching the high temperature outer cylinder 12.

Fig. 5 to 6 show a smoke abatement device 100A according to a second preferred embodiment of the present invention, which is identical in components and functions to the base 10, outer cylinder 12, tubular body 14, convergent tube 16, guide vanes 18 and combustion device described in the first embodiment, so that the same parts will not be described again, and it is noted that the second preferred embodiment further comprises a thermal insulation layer 30, an extension tube 32, a flame shield 34 and a bracket 36.

The heat insulation layer 30 is located between the tube 14 and the outer tube 12, and is used for insulating heat at one side of the heat insulation layer 30 located on the tube 14, so that the outer tube 12 is not easily heated and heated by heat conduction, in practical application, the heat insulation layer 30 can be a heat insulation film made of ceramics or a heat insulation layer made of a high polymer material, the pipe diameter of the extension pipe 32 is smaller than that of the tube 14, one end of the extension pipe is connected with the main body 20 of the combustion device, one end of the support 36 is connected with the extension pipe 32, and the other end of the support 36 is connected with the flame shielding sheet 34.

In the embodiment, the bracket 36 has a function of adjusting the telescopic length, and may be fixed in length in practical applications, and the pipe wall of the extension pipe 32 and the flame shielding sheet 34 both have a plurality of

flame holes

32a, 34a (refer to fig. 6), and the diameter of the flame shielding sheet 34 is smaller than the inner diameter of the pipe body 14, but greater than or equal to three-quarters of the inner diameter of the pipe body 14, so as to concentrate most of the flame on the side of the flame shielding sheet 34 facing the extension pipe 32, so that most of the smoke can be burned therein.

By means of the extension pipe 32, the flame shield 34 and the bracket 36 in the embodiment, the flame generated by the combustion device is easily concentrated on the central axis of the pipe body 14 through the extension pipe 32 without being influenced by smoke air flow to generate deviation; after the flame rises, the flame is blocked by the flame shielding sheet 34 and extends and burns in a direction parallel to the flame shielding sheet 34, and a fire wall is formed inside the pipe body 14; the airflow in the extension pipe 32 rises due to the heating, so that a pressure difference is generated in the extension pipe 32, and the smoke outside the extension pipe 32 tends to enter the extension pipe 32 and is further combusted by the flame in the extension pipe 32, and part of the smoke remaining between the extension pipe 32 and the pipe body 14 can be combusted by the flame blown out from the flame holes 32a in the pipe wall of the extension pipe 32 or contacted by the flame blown out from the bracket 36, and the smoke rising by the updraft can be combusted by the flame wall and the flame shield 34 heated by the flame, and can be combusted by the flame blown out from the flame holes 34a in the flame shield 34.

In practice, the extension pipe 32, the flame shield 34 and the bracket 36 can be selectively assembled and erected according to the user's requirements, and besides the structure described in the second embodiment, only the extension pipe 32 can be disposed on the main body 20.

Fig. 7 and 8 show a smoke abatement device 100B according to a third preferred embodiment of the present invention, in which the components and structure of the present embodiment are substantially similar to those of the second embodiment, and therefore the functions of the similar components are not described again, and it should be noted that the smoke abatement device 100B disclosed in the present embodiment is not provided with the guide vanes 18, the connecting pipe 28 and the extending pipe 32, so that the air required for combustion is provided by the air in the smoke evacuation channel C, and the air flow direction F entering from the side holes 20a is the same as that described above, and therefore, the description thereof is omitted.

The bracket 36 in this embodiment is directly disposed on the main body 20, and the flame shielding plate 34 is disposed at the other end of the bracket 36, in this embodiment, a heat storage net 38 and a flame baffle 40 are additionally disposed, the heat storage net 38 is a metal net (e.g., iron-chromium-aluminum net), the periphery of the heat storage net 38 is connected to the bracket 36, and the heat storage net 38 is disposed between the main body 24a of the combustion apparatus and the flame shielding plate 34 and corresponds to the central channel G; the flame guard 40 is disposed on the heat storage mesh 38 on a side close to the flame shroud 34, and the flame guard 40 is fixed to the heat storage mesh 38 with bolts and nuts 42.

The flame shroud 34 may slow the flow of air into the extractor 100B to extend the residence time of the smoke. The heat storage net 38 is heated by the flame to a high temperature, so that the smoke particles contact the heat storage net 38 and are burned. The flame baffle 40 disperses the flame to the sides, so that the area of the heat storage net 38 contacting the flame is larger. Therefore, the effect of completely burning the particles in the smoke can be achieved. In practice, the flame guard 40 may not be provided.

In addition, the nozzle 22a of the present embodiment is a wind-proof nozzle 44, which has an inlet end 44a and an outlet end 44b, the inlet end 44a is connected to the connecting pipe 23, the outlet end 44b faces the venturi 26, the nozzle 22a of the present embodiment has a gas discharge opening I between the inlet end 44a and the outlet end 44b, and the aperture of the outlet end 44b is larger than that of the gas discharge opening I, so that the gas is not easily affected by the air flow and is not dissipated through the nozzle 22a of the present embodiment.

The above description is only a preferred embodiment of the invention, and all equivalent variations to those described and claimed herein are intended to be included within the scope of the present invention.

Claims

1. A smoke abatement device disposed on a smoke exhaust path, comprising:

a tube body having a first end and a second end opposite to each other;

a combustion device, including a main body, a gas pipeline and an igniter, the main body is located at the first end of the tube body, a smoke exhaust channel is formed between the peripheral surface of the main body and the inner wall of the tube body, and the main body is provided with a central channel communicated with the first end of the tube body; the gas line directing gas to the central passage; the igniter is positioned in the central passage and is used for igniting gas in the central passage so that flame contacts smoke passing through the smoke exhaust passage;

wherein a gas discharge port of the gas line is located in the central passage; the combustion device comprises a venturi positioned in the central channel of the main body, one end of the venturi is connected with the main body and faces the pipe body, the other end of the venturi extends towards the gas discharge port of the gas pipeline, the central channel is communicated with the pipe body through the venturi, the main body is provided with at least one side hole for allowing air to enter the central channel, the side hole is positioned above the gas discharge port, the central channel of the main body is conical, and the aperture of the central channel close to the at least one side hole is larger than that of the central channel close to the gas discharge port.

2. The smoke abatement device of claim 1, wherein the igniter comprises an electric rod having a heating end located within the central passage.

3. The smoke abatement device of claim 1, wherein the gas line comprises a nozzle and a connecting pipe, wherein the nozzle is located within the central channel and an inlet end of the nozzle is connected to the connecting pipe, an outlet end of the nozzle faces the venturi, the nozzle having the gas vent therein between the inlet end and the outlet end, wherein the outlet end has a larger pore size than the inlet end.

4. A smoke abatement device according to claim 3, wherein the side apertures correspond to the walls of the venturi tube.

5. The smoke abatement device of claim 1, comprising an outer canister housing the exterior of the tube.

6. The fume extraction device of claim 5 including a layer of insulation between said outer cylinder and said tube.

7. The smoke abatement device of claim 1, comprising a flame shroud and a support by which the flame shroud is mounted above the body.

8. The smoke abatement device of claim 7, wherein the support is adjustable in telescopic length.

9. The smoke abatement device of claim 8, wherein the flame shield has a plurality of flame holes.

10. The smoke abatement device of claim 7, comprising a heat storage grid mounted above the body by the support frame and below the flame shroud.

11. The smoke abatement device of claim 10, comprising a flame barrier disposed on said heat storage screen and in correspondence with said central channel.

12. The smoke abatement device of claim 7, further comprising an extension tube, one end of the extension tube being connected to the main body, the other end of the extension tube being connected to the support, the other end of the support being connected to the flame shroud.

13. The smoke abatement device of claim 12, wherein the tube wall of the extension tube has a plurality of flame holes.

14. The smoke abatement device of claim 1, comprising an extension tube having a smaller diameter than the tube body, one end of the extension tube being connected to the main body, the wall of the extension tube having a plurality of flame holes.

15. A smoke abatement device disposed on a smoke exhaust path, comprising:

a tube body having a first end and a second end opposite to each other;

wherein a gas discharge port of the gas line is located in the central passage; the combustion device comprises a venturi positioned in the central channel of the main body, one end of the venturi is connected with the main body and faces the pipe body, the other end of the venturi extends towards the gas discharge port of the gas pipeline, the central channel is communicated with the pipe body through the venturi, the main body is provided with at least one side hole for enabling air to enter the central channel, the side hole is positioned above the gas discharge port, and the side hole corresponds to the pipe wall of the venturi.

16. The smoke abatement device of claim 15, wherein the igniter comprises an electric rod having a heated end located within the central passage.

17. The smoke abatement device of claim 15, wherein the central channel of the body is tapered.

18. The smoke abatement device of claim 17, wherein the gas line comprises a nozzle and a connecting tube, wherein the nozzle is located within the central channel and an inlet end of the nozzle is connected to the connecting tube, an outlet end of the nozzle faces the venturi, the nozzle having the gas vent therein between the inlet end and the outlet end, wherein the outlet end has a larger pore size than the inlet end.

19. The smoke abatement device of claim 15, comprising an outer cylinder housing the exterior of the tube.

20. The smoke abatement device of claim 19, comprising a layer of insulation between the outer cylinder and the tube.

21. The smoke abatement device of claim 15, comprising a flame shroud and a support by which the flame shroud is mounted above the body.

22. The smoke abatement device of claim 21, wherein the support is adjustable in telescopic length.

23. The smoke abatement device of claim 22, wherein the flame shield has a plurality of flame holes.

24. The smoke abatement device of claim 21, comprising a thermal storage grid mounted above the body by the support frame and below the flame shroud.

25. The smoke abatement device of claim 24, comprising a flame barrier disposed on said heat storage screen and in correspondence with said central channel.

26. The smoke abatement device of claim 21, further comprising an extension tube, one end of the extension tube being connected to the body, the other end of the extension tube being connected to the support, the other end of the support being connected to the flame shroud.

27. The smoke abatement device of claim 26, wherein the tube wall of the extension tube has a plurality of flame holes.

28. The smoke abatement device of claim 15, comprising an extension tube having a smaller diameter than the tube body, one end of the extension tube being connected to the main body, the wall of the extension tube having a plurality of flame holes.