CN201043773Y - Rotational flow entrainment type cooking fume exhauster - Google Patents

Abstract

The utility model provides a whirl entrainment-typed exhaust hood and is characterized in that two blowers and a circular whirl groove are arrayed as a triangular shape, air supply pipelines of the two blowers are arranged along the same direction and are communicated with the circular whirl groove along tangential direction, the angle of the two air supply pipelines are between 60 degrees and 180 degrees; the upper edge of the external cylinder is connected with the lower edge of a changed diameter connecting tube, a splayed conduit inclined toward outside is arranged at the space of the joint of the upper edge and the lower edge, and a circular oil holding groove is arranged around the external ring of the conduit; the joint of the upper edge of the smallest diameter of the changed diameter connecting tube and a smoke exhaust pipeline is provided with a double-face seal rolling door. As the utility model adopts reasonable assembly mode, streamlined structural design and a spherical smoke collection shade, better absorption effect can be realized without the high-power blower; the utility model overcomes much shortcomings of the prior electric oil absorption machine and realizes high efficiency, energy saving, environmental protection and easy cleaning.

Description

A kind of Whirl entraining type cooking fume exhauster

Technical field:

The utility model belongs to the pneumatic dust removal system technical field, is specifically related to remove the electronic range hood of soot gas, particularly a kind of Whirl entraining type cooking fume exhauster.

Background technology:

Electronic range hood is come into the household electrical appliance ranks and has been reached half a century, is indispensable cooking fume remover in the kitchen environment.But existing electronic range hood on the market, almost all be that blower fan is arranged in the pipeline of exhaust fume collecting hood and smoke exhaust pipe junction, utilize the rotation of draught fan impeller to produce negative pressure suction oil smoke, the blade of blower fan directly contacts with soot gas, causes the easily sticking greasy dirt of fan blade, has destroyed the balance of blade, the difficult cleaning, fan performance reduces, and noise increases, and the life-span of smoke exhaust ventilator is also short; And because smoke discharging pipe is blocked by blower fan, cause air-flow not smooth, the efficient of fume exhaust is very low; The input power that producer often takes to strengthen blower fan remedies, not only increased energy consumption, also increase simultaneously the noise of blower fan, made some electronic range hoods can not satisfy the requirement of " GB/T17713-1999 range hood " national standard and " Code for design of dwelling houses GB50096-1999 ".If this original configuration state does not change, defectives such as this fume exhaust efficient that existing electronic range hood exists is low, energy consumption is high, noise is big, pollution is many, difficult cleaning, life-span weak point also can not change.

" the spiral-flow type smoke exhaust ventilator " that China Patent No. 01201987.9 proposes, though the blower fan of configuration has been shifted out smoke discharging pipe, utilize swirling eddy to form negative pressure and entrainment oil smoke, but the cyclone of its eddy flow generating means, whirl cylinder, air inlet air duct adopt cylinder set together, the upper port of air inlet air duct pass cyclone and place cyclone and whirl cylinder in, the low-pressure area that makes eddy flow produce can not be controlled effectively, and also can not reach preferable suction effect; The exhaust duct of the flaring type that it adopts is not suitable for installing and using in the kitchen environment.This smoke exhaust ventilator is not seen so far and is put on market.

Chinese patent application number 200510065824.8 " double vortex three hole entrainment type fume exhaust fans " that propose, the inner core of its Whirl entraining soot device, urceolus have adopted fairshaped bus, the blower fan air-supply of using two lower-wattages is to annular eddy flow groove, on the air-flow that revolves form concentrated negative pressuren zone on the top of inner core, the Whirl entraining soot device that obtains can produce more powerful suction force.But because this smoke exhaust ventilator is taked the both sides that place the Whirl entraining soot device with two typhoon machine symmetries, make two typhoon machines and Whirl entraining soot device " " word arrangement take bigger horizontal space, be unfavorable for installing and using, and narrow relatively longitudinal space makes the effective range deficiency of suction oil smoke, the oil smoke of longitudinal diffusion all can not be aspirated, influence suction effect; Because its section oil groove is located at the bottom of eddy flow sleeve, make grease trickle and pickup urceolus tube wall downwards along the smoke discharging pipe tube wall, increased the trouble of cleaning.And air-flow rotation at a high speed in annular eddy flow groove that blower fan is sent to is found in experiment, the air-flow that the urceolus tube wall is rotated at a high speed constantly washes away down original this position and is not easy sticking greasy dirt, should not be arranged on the bottom of eddy flow sleeve and avoid grease that the urceolus tube wall guttered down to its pickup that causes so annular is cut oil groove; Existing smoke exhaust ventilator need cut out reverse stop valve when not working automatically, comes into the interior along smoke discharging pipe to avoid common flue or outdoor air-flow, because the flue of this smoke exhaust ventilator is unimpeded, but back-flow preventer is not installed, easier collaborating; Because this smoke exhaust ventilator utilizes swirling eddy to entrainment oil smoke, air-flow still rotates in flue in discharge process, if still adopt the existing reverse stop valve that is installed in usually in the smoke discharging pipe, the rotational flow of air-flow in the time of will influencing smoke exhaust ventilator work, therefore existing reverse stop valve is not suitable for the Whirl entraining soot device.

The exhaust fume collecting hood of existing electronic range hood generally has deep hood type, shallow cover type and European ultrathin type on the market, is installed in kitchen range top top 70-80 centimeters usually, is also referred to as high-order the installation.It is better that deep hood type is gathered the effect of oil smoke, but obstruct the view easily and meet and discuss, poor practicability, though do not meet and discuss and shallow cover type and European ultrathin type do not keep off sight line, the weak effect of gathering oil smoke, producer also changes the profile of exhaust fume collecting hood sometimes, for example, model is that the lampblack absorber of CXW-219-D69 is used for reference European employing arch exhaust fume collecting hood, model is that install near the kitchen range top low level lampblack absorber inlet scoop of CXW-169-JX01/J2M/19M, in the panel upper end sideboard is installed and is served as exhaust fume collecting hood, does not keep off sight line and does not does not meet and discuss to reach, but, cause general effect not very good because these exhaust fume collecting hoods can not be taken into account practicality and the effect of gathering oil smoke simultaneously.

The utility model content:

The utility model proposes a kind of Whirl entraining type cooking fume exhauster, adopt more rational assembling mode and fairshaped structural design and sphere shape exhaust fume collecting hood, to overcome above-mentioned many drawbacks of existing electronic range hood, reach the purpose of efficient, energy-saving and environmental protection, easy cleaning.

The utility model Whirl entraining type cooking fume exhauster, comprise: the tubaeform inner core by concentricity axle extend in the urceolus, constitute the annular eddy flow groove that the cross section is " v " shape, bottom land sealing, the bus of described tubaeform inner core is a hyperbolic-type, its lower port diameter is 1.1 to 1.5 times of back cut diameter, highly is 0.3 to 0.7 times of back cut diameter, and the bus of described urceolus is a parabolic type, its back cut diameter is 1 to 1.5 times of lower port diameter, and the urceolus height is 1 to 1.2 times of tubaeform inner core height; Two typhoon machines place the outside of annular eddy flow groove, and the air supply duct of blower fan tangentially communicates with annular eddy flow groove, and the Whirl entraining soot device of Zu Chenging is installed in the exhaust fume collecting hood top thus, and the edge of the bottom land of its annular eddy flow groove and the smoking port of exhaust fume collecting hood is tightly connected; The air inlet of described blower fan is connected with the smoking port of exhaust fume collecting hood towards the kitchen range top; It is characterized in that: this two typhoons machine and annular eddy flow groove are " product " font to be arranged, the air supply duct of two typhoon machines in the same way and tangentially be communicated with annular eddy flow groove, the angle between two air supply ducts is at 60 to 180 degree; The urceolus upper edge of described Whirl entraining soot device is connected with reducing tube connector lower edge, reserves the space in both junctions and opens the outward-dipping conduit of " eight " font, and annular section oil groove is being set in one week of outer shroud of conduit; The minimum diameter of described reducing tube connector is 0.9 to 1.3 times of tubaeform inner core back cut diameter, and the length of reducing tube connector is 1 to 2 times of its minimum diameter; The dual face seals rolling screen door is installed in the upper edge of reducing tube connector and smoke discharging pipe junction, and this dual face seals rolling screen door adopts square double-decker, with the two seals circle roller shutter is clipped in the middle, and electronic or manually opened device is set, and utilizes coiled springs to reset and closes.

The bus of described reducing tube connector is streamlined, can adopt reducing pipe, pipe or shrink earlier the Wen Teli pipe of afterwards expanding, and be good with the Wen Teli pipe.

The air supply duct of described blower fan can be tangent type pipe, spiral line type pipe, arc line type pipe or involute-type pipe.

Described exhaust fume collecting hood is preferably sphere shape, can take the mounting means of a high position or inclination low level, is installed as good with the inclination low level.

Described Whirl entraining soot device can vertically or tilt to be installed on the exhaust fume collecting hood.

Described smoke discharging pipe can be straight tube or bend pipe, is good with bigger radius of curvature during for bend pipe.

The utility model Whirl entraining type cooking fume exhauster has following outstanding substantive distinguishing features and obvious improvement compared with the prior art:

1. the utility model is owing to take the air supply duct of two typhoon machines to enter annular eddy flow groove in the same way and tangentially, angle between two air supply ducts is at 60 to 180 degree, two typhoon machines and annular eddy flow groove are " product " font to be arranged, and this more rational assembling mode can make this smoke exhaust ventilator realize efficient, energy-conservation and low noise; Air-flow co-flow in annular eddy flow groove that two typhoon machines suction oil smoke is discharged during this smoke exhaust ventilator work, strengthened the energy of eddy flow, make the Whirl entraining soot device form concentrated low-pressure area on inner core top, entrainment oil smoke once again so produce enough suction, the Whirl entraining soot device has been eliminated the phase mutual interference that fan parallel-connection uses simultaneously; Owing to taked the edge of the smoking port of the bottom land of its annular eddy flow groove and exhaust fume collecting hood to be tightly connected, the mounting means that the air inlet of two typhoon machines is connected with the smoking port of exhaust fume collecting hood towards the kitchen range top, except that the Whirl entraining oil smoke that the Whirl entraining soot device produces, blower fan is also participated in the suction oil smoke at the same time directly, this is equivalent to original blower fan many Whirl entraining soot devices under the situation that does not increase energy consumption and works at the same time, the scope and the effect of suction oil smoke have been enlarged, the original function of blower fan does not reduce, energy consumption does not increase, and the energy obtains the secondary utilization, and oil fume pumping-clean rate improves greatly; Particularly taking two typhoon machines and annular eddy flow groove to be " product " font arranges, angle between two air supply ducts is adjustable between 60 to 180 degree, make the oil smoke of ascension can be over against smoking port, enlarged the scope of suction oil smoke, can reduce greatly than the power of fan of existing electronic range hood in the general power that reaches two typhoon machines under the suction effect situation preferably, the power of blower fan has reduced, and noise has also reduced simultaneously.Enter because most of soot gas is the smoking port from the Whirl entraining soot device, than the existing electronic range hood soot gas blower fan of all flowing through, the sticking greasy dirt amount of blower fan will significantly reduce, thereby can prolong the life-span of blower fan.

2. because the utility model adopts the urceolus upper edge of Whirl entraining soot device to be connected with reducing tube connector lower edge, reserve the space in both junctions and open the outward-dipping conduit of " eight " font, and annular section oil groove is being set in one week of outer shroud of conduit, can make this smoke exhaust ventilator realize efficient and easy cleaning; Adopting the reducing tube connector in the utility model is that the Wen Teli pipe of afterwards expanding shrinks in reducing pipe, pipe or elder generation, and the air-flow that revolves on annular eddy flow groove forms low-pressure area and aspirates oil smoke in pipeline; When particularly adopting the Wen Teli pipe, because the Wen Teli pipeline shrinks afterwards earlier and expands, the hoop speed of the air-flow that revolves on annular eddy flow groove will be improved at the contraction section of Wen Teli pipe, descend and arrived expansion segment hoop speed, can know that by Hydrodynamics Theory the hoop speed of eddy flow is big more, the pressure that produces at the center of eddy flow is low more, so can form the low-pressure area that pressure ratio is concentrated on the top of inner core, the suction of Whirl entraining soot device is increased; Theoretical and experiment shows that all than reducing pipe or pipe, when using the Wen Teli pipe, the air velocity that rises in the smoking port place of exhaust fume collecting hood has increased, and this effect that is equivalent to the suction oil smoke of smoke exhaust ventilator has increased.The size of this reducing tube connector and Whirl entraining soot device will have a coupling, its minimum diameter is 0.9 to 1.3 times of tubaeform inner core back cut diameter, the too little discharge that will stop air-flow of the diameter of reducing tube connector, smoking port at exhaust fume collecting hood forms backflow, do not reach the purpose of suction oil smoke, be unfavorable for aspirating oil smoke and the negative pressure of the low-pressure area that diameter forms on the top of inner core too greatly is too for a short time; Because the reducing tube connector connects outside smoke discharging pipe, occupy the limited bulk in the smoke exhaust ventilator shell, so its length should not be too big, adopt 1 to 2 times of its minimum diameter to be advisable.Because the utility model is taked to reserve the space in the junction of the urceolus upper edge of Whirl entraining soot device and reducing tube connector lower edge and is opened the outward-dipping conduit of " eight " font, and annular section oil groove is being set one week of outer shroud of conduit, on the one hand because the air-flow that blower fan is sent to rotation at a high speed in annular eddy flow groove, the air-flow that the urceolus tube wall of Whirl entraining soot device is just rotated at a high speed constantly washes away and can not glue greasy dirt, the centrifugal force that the grease of condensation is produced by eddy flow in oil smoke in the smoke evacuation process is thrown to the inwall of smoke discharging pipe and reducing tube connector on the other hand, accumulation will be trickled downwards at the grease of smoke discharging pipe and reducing tube connector inwall, so the conduit that tilts can stop grease fully and collect annular and cut oil groove, can reduce grease pickup scope, the urceolus tube wall no longer needs to clean; The grease of annular eddy flow groove amputation can be connected to the convenient removing of oil storage box by pipeline.In addition, because the centrifugal force that produced by eddy flow of most of grease is thrown to tube wall and amputation, the pipeline in the kitchen just becomes a centrifugal classification device efficiently, makes to be discharged into outdoor oil smoke concentration and to reduce environment protection standard greatly.

3. because the utility model adopts the upper edge of reducing tube connector and the dual face seals rolling screen door of smoke discharging pipe junction installation to adopt square double-decker, if the two seals circle is clipped in the middle roller shutter, electronic or manually opened device is set, utilizing coiled springs to reset closes, common flue or outdoor air-flow come into the interior along smoke discharging pipe in the time of can avoiding smoke exhaust ventilator not work, the motion of swirling eddy when not influencing simultaneously smoke exhaust ventilator work; And because this smoke exhaust ventilator utilizes swirling eddy formation low pressure core to entrainment oil smoke, air-flow rotates in flue in discharge process, the rotational flow of air-flow when the existing reverse stop valve that is installed in the smoke discharging pipe can influence smoke exhaust ventilator work, therefore existing reverse stop valve is inapplicable to the utility model Whirl entraining type cooking fume exhauster.

4. the utility model preferably adopts the exhaust fume collecting hood of sphere shape, when installing by a common high position, can have the usefulness that the deep hood type exhaust fume collecting hood gathers oil smoke and have both the magnificent appearance of European machine again; And when taking low level to install, do not keep off sight line, do not take up space and do not meet and discuss, the smoking port that is in low level can lead oil smoke before oil smoke spreads everywhere and aspirate, and high-order smoking port continues the oil smoke of suction ascension, reaches the purpose of purifying oil fume, thereby avoid human body to suck, this also helps the Whirl entraining soot device is tilted to be installed on the exhaust fume collecting hood, the radius of curvature of leading to outdoor smoke discharging pipe configuration bend pipe is increased, thereby the usefulness of smoke evacuation and Whirl entraining oil smoke is all improved; Because the air-flow of rotation is through just no longer rotation of a part of air-flow behind the bend pipe, but along duct orientation streamlined flow and discharge, this moment, the suction of Whirl entraining oil smoke will descend than straight tube, so configuration during bend pipe its radius of curvature more maelstrom to entrainment the suction of oil smoke high more, straight tube is the highest; Under the situation that can satisfy mounting condition, be good as smoke discharging pipe to adopt bend pipe than larger radius of curvature.

In a word, the utility model has been owing to taked than the reasonable configuration assembling mode, and adopts fairshaped structural design and sphere shape exhaust fume collecting hood, can realize efficient, energy-saving and environmental protection and easy cleaning, and install and function of use aspect, give user's multiple choices.

Description of drawings:

Fig. 1 is the vertical section organigram of embodiment 1 Whirl entraining type cooking fume exhauster.

Fig. 2 is that the A-A of Fig. 1 analyses and observe organigram.

Fig. 3 is that the B-B of Fig. 2 analyses and observe organigram.

Fig. 4 is the vertical section organigram of embodiment 2 Whirl entraining type cooking fume exhausters.

Fig. 5 is that the C-C of Fig. 4 analyses and observe organigram.

Fig. 6 is that the D-D of Fig. 5 analyses and observe organigram.

The specific embodiment:

Existing accompanying drawings embodiment of the present utility model.

Embodiment 1:

Present embodiment is a kind of embodiment of Whirl entraining type cooking fume exhauster.Fig. 1 is its vertical section organigram, and Fig. 2 is that the A-A of Fig. 1 analyses and observe organigram, and Fig. 3 is that the B-B of Fig. 2 analyses and observe organigram.

As Fig. 1, shown in Fig. 2 and Fig. 3: the Whirl entraining soot device that adopts in the present embodiment is a cannulated device, promptly the tubaeform inner core 1 by concentricity axle extend in the urceolus 4, constitute a cross section and be " v " shape, the annular eddy flow groove 6 of bottom land sealing, the bus of described cone inner core 1 is a hyperbolic-type, its lower port diameter is 1.25 times of 3 diameters suitable for reading, it highly is 0.5 times of 3 diameters suitable for reading, the bus of described urceolus 4 is a parabolic type, its back cut diameter is 1.2 times of lower port diameter, highly be 1.1 times of tubaeform inner core height, the air supply duct 7 of blower fan is installed in perforate on the wall of streamlined urceolus 4, what adopt in the present embodiment is the tangent type pipe, adopting two power in the present embodiment is the outside that 48 watts blower fan 9 is positioned at annular eddy flow groove 6, being " product " font with annular eddy flow groove 6 arranges, the angle that the air supply duct 7 of two typhoon machines 9 enters between 6, two air supply ducts 7 of annular eddy flow groove in the same way and is tangentially spent 60 to 180; The Whirl entraining soot device of forming is installed in the top of sphere shape exhaust fume collecting hood 11, the edge of the smoking port 2 of the bottom land of its annular eddy flow groove 6 and exhaust fume collecting hood 11 is tightly connected, the air inlet 10 of blower fan is connected towards the smoking port of the kitchen range top with exhaust fume collecting hood 11, described sphere shape exhaust fume collecting hood 11 is installed according to a common high position, and dull and stereotyped 15 are used to connect the exhaust fume collecting hood 11 and the Whirl entraining soot device of sphere shape; The upper edge of the urceolus 4 of described Whirl entraining soot device is connected with the lower edge of reducing tube connector 8, reserves the space in both junctions and opens the outward-dipping conduit of " eight " font, and annular section oil groove 5 is being set in one week of outer shroud of conduit; The reducing tube connector 8 that adopts in the present embodiment is the Wen Teli pipe, the equal diameters of its minimum diameter and cone inner core 1 suitable for reading 3, and the length of reducing tube connector 8 is 1.3 times of its minimum diameter; Dual face seals rolling screen door 13 is installed in the junction of the upper edge of reducing tube connector 8 and smoke discharging pipe 14, the dual face seals rolling screen door that has adopted China Patent No. 200420091566.1 to propose in the present embodiment, this dual face seals rolling screen door adopts square double-decker, if the two seals circle is clipped in the middle roller shutter, electronic or manually opened device is set, utilizes coiled springs to reset and close; Shell 12 is platforms that parts such as switch, oil storage box, light fixture are installed.

During use, open dual face seals rolling screen door 13 earlier, starting switch, two typhoon machines 9 are transported to annular eddy flow groove 6 co-flow from the soot gas of air inlet 10 suctions of blower fan through the air supply duct 7 of blower fan, strengthened the energy of eddy flow, the Whirl entraining soot device has been eliminated the blower fan 9 phase mutual interference of using in parallel simultaneously, the air-flow of rotation forms concentrated low-pressure area on the top of the outlet 3 of inner core at a high speed, so produce enough suction, the oil smoke that is entrainmented enters streamlined tubaeform inner core 1 from smoking port 2, from the outlet 3 of the inner core reducing tube connector 8 of flowing through, discharge again from smoke discharging pipe 14.Owing to taked the edge of the smoking port 2 of the bottom land of annular eddy flow groove 6 and exhaust fume collecting hood 11 to be tightly connected, the mounting means that the air inlet 10 of two typhoon machines 9 is connected with the smoking port of exhaust fume collecting hood 11 towards the kitchen range top, except that the Whirl entraining oil smoke that the Whirl entraining soot device produces, blower fan is also participated in the suction oil smoke at the same time directly, this is equivalent to original blower fan many Whirl entraining soot devices under the situation that does not increase energy consumption and works at the same time, the scope and the effect of suction oil smoke have been enlarged, the original function of blower fan does not reduce, energy consumption does not increase, and the energy obtains the secondary utilization, and oil fume pumping-clean rate improves greatly; Particularly owing to take two typhoon machines 9 and annular eddy flow groove 6 to be the arrangement of " product " font, the air supply duct 7 of two typhoon machines 9 is communicated with annular eddy flow groove 6 in the same way and tangentially, angle between two air supply ducts 7 is 60 to 1, adjustable between 80 degree, can make the oil smoke of ascension so enlarged the scope of suction oil smoke, not need to use powerful blower fan just can reach suction effect preferably over against smoking port, the power of blower fan has reduced, and noise has also reduced simultaneously.

Experiment is found, when the general power of two typhoon machines 9 96 watt-hours (power of each blower fan is 48 watts), the exhausting amount of Whirl entraining soot device is greater than the exhausting amount summation of two typhoon machines 9, the soot gas major part of ascension enters from the smoking port 2 of Whirl entraining soot device, the fraction soot gas enters from the air inlet 10 of blower fan, this is equivalent in energy consumption is 96 watt-hours, the suction oil smoke effect that the suction oil smoke effect of this Whirl entraining smoke exhaust ventilator is 96 watts of non-Whirl entrainings of blower fan much larger than two general powers, the utility model has reduced energy consumption reaching under the situation of very high oil fume pumping-clean rate, and another benefit that adopts lower powered blower fan is also to have reduced noise simultaneously.

Because adopting, reducing tube connector 8 shrinks earlier the Wen Teli pipe of afterwards expanding, the hoop speed of the air-flow that revolves on annular eddy flow groove 6 will be improved at the contraction section of Wen Teli pipe, descend and arrived expansion segment hoop speed, can know by Hydrodynamics Theory, the hoop speed of eddy flow is big more, the pressure that produces at the center of eddy flow is low more, so can form the low-pressure area that pressure ratio is concentrated on the top of the outlet 3 of inner core, the suction of Whirl entraining soot device is increased; Theoretical and experiment shows that all than reducing pipe or pipe, when using the Wen Teli pipe, the air velocity that rises in the smoking port place of exhaust fume collecting hood 11 has increased, and this effect that is equivalent to the suction oil smoke of smoke exhaust ventilator has increased.

Reserve the space in the junction of the lower edge of the upper edge of the urceolus 4 of Whirl entraining soot device and reducing tube connector 8 and open the outward-dipping conduit of " eight " font, and annular section oil groove 5 is being set one week of outer shroud of conduit, on the one hand because the air-flow that blower fan is sent to rotation at a high speed in annular eddy flow groove 6, the air-flow that the tube wall of the urceolus 4 of Whirl entraining soot device is just rotated at a high speed constantly washes away and can not glue greasy dirt, the centrifugal force that the grease of condensation is produced by eddy flow in oil smoke in the smoke evacuation process is thrown to the inwall of smoke discharging pipe 14 and reducing tube connector 8 on the other hand, accumulation will be trickled downwards at the grease of smoke discharging pipe 14 and reducing tube connector 8 inwalls, so the conduit that tilts can stop grease fully and collect annular and cut oil groove 5, can reduce grease pickup scope, the tube wall of urceolus 4 no longer needs to clean; The grease of annular eddy flow groove 5 amputation can be connected to the convenient removing of oil storage box by pipeline.In addition, because the centrifugal force that produced by eddy flow of most of grease is thrown to tube wall and amputation, the pipeline in the kitchen just becomes a centrifugal classification device efficiently, makes to be discharged into outdoor oil smoke concentration and to reduce environment protection standard greatly.Because the air-flow of discharging is still in rotation, adopted dual face seals rolling screen door 13 in the present embodiment, it adopts square double-decker, if the two seals circle is clipped in the middle roller shutter, electronic or manually opened device is set, utilizing coiled springs to reset closes, this structure is different from the existing reverse stop valve that is installed in the smoke discharging pipe, existing being installed in still is positioned at smoke discharging pipe when the interior reverse stop valve of smoke discharging pipe is opened, the motion of swirling eddy in the time of can influencing this smoke exhaust ventilator work, thereby cause smoke evacuation not smooth, and dual face seals rolling screen door 13 when opening pipeline just recover unobstructed, do not influence swirling motion, can avoid common flue or outdoor air-flow to come into the interior when closing along smoke discharging pipe 14.

Embodiment 2:

Present embodiment is the another kind of embodiment of Whirl entraining type cooking fume exhauster.Fig. 4 is its vertical section organigram, and Fig. 5 is that the C-C of Fig. 4 analyses and observe organigram, and Fig. 6 is that the D-D of Fig. 5 analyses and observe organigram.

As Fig. 4, Fig. 5 with as shown in Fig. 6: structure and connected mode that the Whirl entraining soot device that adopts in the present embodiment, annular are cut oil groove 5, dual face seals rolling screen door 13 are identical with embodiment 1, its difference is: sphere shape exhaust fume collecting hood 11 mounting means according to the inclination low level, make exhaust fume collecting hood 11 that the low level smoking port 16 nearer apart from the kitchen range top be arranged, the corresponding smoking port 2 far away apart from the kitchen range top be the smoking port of a high position, stretches out the low level smoking port 16 that guide shell 17 is connected to sphere shape exhaust fume collecting hood 11 for 10 times at the air inlet of blower fan.

During use, open dual face seals rolling screen door 13 earlier, starting switch, blower fan 9 just can lead suction with soot gas from low level smoking port 16, the soot gas of generation can not be spread towards periphery, and the part soot gas of ascension aspirates through the Whirl entraining soot device again, thereby can not be absorbed by the body.Owing to had both embodiment 1, the smoke exhaust ventilator of present embodiment has advantages such as aspiration ranges is big, pumping-clean rate is high, noise is low, pollution is few; The sphere shape exhaust fume collecting hood 11 of this inclination does not keep off sight line, do not take up space and do not meet and discuss, low level smoking port 16 can lead oil smoke before oil smoke spreads everywhere and aspirate, and high-order smoking port 2 continues the oil smoke of suction ascension, reach the purpose of purifying oil fume, thereby avoid human body to suck; Exhaust fume collecting hood 11 inclination low levels are installed and are also helped the Whirl entraining soot device is tilted to be installed on the exhaust fume collecting hood 12, the radius of curvature of leading to outdoor smoke discharging pipe 14 configuration bend pipes is increased, because the air-flow of rotation is through just no longer rotation of a part of air-flow behind the bend pipe, but along duct orientation streamlined flow and discharge, bend pipe is than straight tube, and the suction of Whirl entraining oil smoke will descend; The radius of curvature of the bend pipe of experiment discovery configuration is big more, and the suction of Whirl entraining oil smoke is high more, and straight tube is the highest.In the present embodiment when the Whirl entraining soot device relatively when the wall, also can stretch out the low level smoking port 16 that guide shell 17 is connected to sphere shape exhaust fume collecting hood 12 for 2 times at the smoking port of Whirl entraining soot device, the Whirl entraining soot device just can lead oil smoke and aspirate from low level smoking port 16 this moment, the soot gas of ascension aspirates through the air inlet 10 of blower fan again, thereby also can reach same effect.

Claims (6)

1. Whirl entraining type cooking fume exhauster, comprise: the tubaeform inner core by concentricity axle extend in the urceolus, constitute the annular eddy flow groove that the cross section is " v " shape, bottom land sealing, the bus of described tubaeform inner core is a hyperbolic-type, its lower port diameter is 1.1 to 1.5 times of back cut diameter, highly is 0.3 to 0.7 times of back cut diameter, and the bus of described urceolus is a parabolic type, its back cut diameter is 1 to 1.5 times of lower port diameter, and the urceolus height is 1 to 1.2 times of tubaeform inner core height; Two typhoon machines place the outside of annular eddy flow groove, and the air supply duct of blower fan tangentially communicates with annular eddy flow groove, and the Whirl entraining soot device of Zu Chenging is installed in the exhaust fume collecting hood top thus, and the edge of the bottom land of its annular eddy flow groove and the smoking port of exhaust fume collecting hood is tightly connected; The air inlet of described blower fan is connected with the smoking port of exhaust fume collecting hood towards the kitchen range top; It is characterized in that: this two typhoons machine and annular eddy flow groove are " product " font to be arranged, the air supply duct of two typhoon machines in the same way and tangentially be communicated with annular eddy flow groove, the angle between two air supply ducts is at 60 to 180 degree; The urceolus upper edge of described Whirl entraining soot device is connected with reducing tube connector lower edge, reserves the space in both junctions and opens the outward-dipping conduit of " eight " font, and annular section oil groove is being set in one week of outer shroud of conduit; The minimum diameter of described reducing tube connector is 0.9 to 1.3 times of tubaeform inner core back cut diameter, and the length of reducing tube connector is 1 to 2 times of its minimum diameter; The dual face seals rolling screen door is installed in the upper edge of reducing tube connector and smoke discharging pipe junction, and this dual face seals rolling screen door adopts square double-decker, with the two seals circle roller shutter is clipped in the middle, and electronic or manually opened device is set, and utilizes coiled springs to reset and closes.

2. Whirl entraining type cooking fume exhauster as claimed in claim 1, the bus that is characterised in that described reducing tube connector is streamlined, this reducing tube connector adopts reducing pipe, pipe or shrinks earlier the Wen Teli pipe of afterwards expanding.

3. Whirl entraining type cooking fume exhauster as claimed in claim 1, the air supply duct that is characterised in that described blower fan are tangent type pipe, spiral line type pipe, arc line type pipe or involute-type pipe.

4. Whirl entraining type cooking fume exhauster as claimed in claim 1 is characterised in that described exhaust fume collecting hood is a sphere shape, takes the mounting means of a high position or inclination low level.

5. Whirl entraining type cooking fume exhauster as claimed in claim 1 is characterised in that described Whirl entraining soot device is installed on the exhaust fume collecting hood with vertical or inclination.

6. Whirl entraining type cooking fume exhauster as claimed in claim 1 is characterised in that described smoke discharging pipe is straight tube or bend pipe.

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