Smoke exhausting device

A smoke exhausting device is disclosed. It includes a housing partitioned into two internal rooms. One of the rooms is a bellows for creating pressure, while the other is a guide box for guiding the smoke. The bellows has an entrance communicated with the guide box and an exit communicated with outer side of the housing. The guide box surrounds a front side, right side, left side and a bottom face of the bellows and is spaced from the bellows to define a path for air flow to smoothly pass therethrough. Each of the three sides is disposed with at least one sucking mouth, which is communicated with the entrance. A bottom of the housing is formed with a downward inclined oil guiding section having an oil outlet at bottom end. The housing can be easily disassembled from the funnel and the sucking mouths of the guide box can be disposed at different positions in different directions, so that the smoke exhausting device is applicable to different sites.

BACKGROUND OF THE INVENTION 
The present invention relates to a smoke exhausting device which is 
detachably assembled with a smoke collecting funnel. 
FIG. 1 shows an existing smoke exhausting device including a smoke sucking 
apparatus 11 having an entrance 12 and an exit 13 which are fixedly 
directed. The smoke sucking apparatus 11 must be used together with a 
funnel body (not shown) so as to collectively suck a larger area of smoke. 
The entrance 12 and exit 13 of such smoke exhausting device have fixed 
direction so that it is impossible to use such device to laterally suck in 
or discharge smoke. 
FIG. 2 shows a separation type smoke exhausting device in which a sucking 
motor 15 is installed outside a wall 16, while the housing 17 is disposed 
inside the wall. Accordingly, the noise from the sucking motor 15 is 
insulated outdoors. However, it is dangerous to install the sucking motor 
15 outside the wall of a building. Also, it is difficult and dangerous to 
maintain or wash the sucking motor 15 thereafter. 
FIG. 3 shows another type of smoke exhausting device 21 including two 
sucking fans. Such device can be more easily installed and washed. 
However, the device must be assembled in a funnel body 22 without 
separation. 
SUMMARY OF THE INVENTION 
It is therefore a primary object of the present invention to provide a 
smoke exhausting device including a housing partitioned into a bellows and 
a guide box. The sucking mouths of the guide box can be disposed at 
different positions in different directions to achieve better smoke 
sucking effect. The housing can be disassembled from the smoke collecting 
funnel so that the smoke exhausting device is applicable to different 
sites. 
It is a further object of the present invention to provide the above smoke 
exhausting device in which one or more housings can be arranged side by 
side according to the size of the funnel or the distance for exhausting 
the smoke. Therefore, the resistance against the smoke sucking force is 
reduced to enhance the smoke exhausting effect. 
The present invention can be best understood through the following 
description and accompanying drawings, wherein:

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
Please refer to FIGS. 4 to 6. The present invention includes a housing 3 
partitioned into two internal rooms. One of the rooms is a bellows 31 for 
creating pressure, while the other is a guide box 32 for guiding the 
smoke. The bellows 31 has an entrance 311 communicated with the guide box 
32 and an exit 312 communicated with outer side of the housing 3. A fan 
313 driven by a motor 33 is disposed in the bellows 31. The bottom of the 
bellows 31 is disposed with an oil draining opening 314. The guide box 32 
surrounds a front side 315, right side 316, left side 317 and a bottom 
face 318 of the bellows 31 and is spaced from the bellows 31 to define a 
path for air flow to smoothly pass therethrough. Each of the three sides 
315, 316, 317 is disposed with a sucking mouth 34 on the corner, which is 
communicated with the entrance 311. The bottom of the housing 3 is formed 
with a downward inclined oil guiding section 35 having an oil outlet 351 
at bottom end. 
The sucking mouth 34 of the housing 3 can be equipped with a mesh 37 or a 
cover member 36 for sealing the sucking mouth 34. Also, the sucking mouth 
34 can be connected with other pipe member by a connector 38. The top end 
of the housing 3 is disposed with two hanging hooks 39. 
Referring to FIGS. 7 and 8, when applied as a smoke exhausting device in 
kitchen, the present invention is used with a smoke collecting funnel 4. 
The top end of the funnel 4 is disposed with a movable cover board 44. The 
interior of the funnel is formed as a smoke collecting chamber 41. A 
locating seat 42 is disposed on rear side of the chamber 41 and an oil cup 
43 is disposed at bottom end of the funnel 4. 
In use, the funnel 4 is first fixed at a desired position. Then two 
housings 3 are respectively fixed on the locating seat 42 of the funnel 4 
and connected with a ventilation pipe (not shown) which is conducted 
outside the wall. When smoke is produced during cooking, the fan 313 is 
driven by the motor 33 to rotate and create a sucking force, whereby the 
smoke is sucked from the sucking mouth 34 into the guide box 32 and then 
sucked from the entrance 311 into the bellows 31. The smoke in the bellows 
31 is forced to inner side thereof to condense into oil drops. The oil 
drops flow from the oil draining opening 314 to the oil guiding section 35 
of the guide box 32 and flow from the oil exit 351 into the oil cup 43. A 
mesh 37 can be disposed at the sucking mouth 34 for filtering the oil and 
protecting the fan 313. 
Referring to FIG. 9, according to a second embodiment of the present 
invention, the housing 5 is installed on outer side of the wall 51 and the 
funnel 52 and the housing 5 are connected by a ventilation pipe 53. 
Referring to FIG. 10, according to a third embodiment of the present 
invention, a filtering mesh 56 is disposed on bottom face of the funnel 55 
and a filter 59 with activated carbon is disposed in the guide box 58. 
FIG. 11 shows a fourth embodiment of the present invention, in which the 
housing 6 is separated from the funnel 61 and installed outside the 
kitchen cabinet 62. The housing 6 is connected with the funnel 61 by a 
ventilation pipe 63. Accordingly, the ventilation pipe 63 will not occupy 
the space of the kitchen cabinet 62. 
FIG. 12 shows a fifth embodiment of the present invention, in which in the 
case that there is a quite long distance between the housing 65 and outer 
side of the room and the ventilation pipe 66 is bent or too long so that a 
high resistance is created in the ventilation pipe 66, over two housings 
65 can be installed at the middle or the end of the smoke path to increase 
the smoke exhausting force. The additional sucking mouth 67 of the housing 
65 can be sealed by a cover body 68 to avoid leakage of smoke. 
FIG. 13 shows a sixth embodiment of the present invention, in which the 
funnel 7 has a thinner pattern and the housing 71 protrudes beyond the top 
end of the funnel 7. Such housing 71 is applicable to a thick or a thin 
funnel 7. 
FIG. 14 shows a seventh embodiment of the present invention, which is 
applicable to a kitchen of a restaurant. The funnel 75 is wider so that 
more housings 76 are installed on the funnel 75 side by side for sucking 
smoke covering a larger area. Similar to FIG. 15, in use, the housings 77 
can be separated from the funnel 78. 
FIG. 16 shows an eighth embodiment of the present invention, in which one 
side of the funnel 8 is disposed with a smoke discharging opening 81 and 
the exit 821 of the housing 82 is disposed on the same side, whereby the 
collected smoke is discharged from one side. This will not affect the 
smoke exhausting effect. Also, the cabinet 83 is free from the ventilation 
pipe 84 so that more space of the cabinet 83 is saved for use. 
Referring to FIG. 17, in the above embodiment, the housing 85 is separated 
from the funnel 87 and installed on the wall 88 with the exit 851 disposed 
on one side thereof. 
FIG. 18 shows a ninth embodiment of the present invention, in which the 
housing 9 is solely used in a bar-be-cue restaurant or directly installed 
beside a bar-be-cue oven 91. The sucking mouth 92 directly sucks the smoke 
produced from the oven 91. The oil drop is collected by the oil cup 93 at 
the bottom of the housing 9. 
It is to be understood that the above description and drawings are only 
used for illustrating some embodiments of the present invention, not 
intended to limit the scope thereof. Any variation and derivation from the 
above description and drawings should be included in the scope of the 
present invention.