CN102183056B - Air flow full-seal-type smoke exhaust hood - Google Patents
Air flow full-seal-type smoke exhaust hood Download PDFInfo
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- CN102183056B CN102183056B CN 201110135361 CN201110135361A CN102183056B CN 102183056 B CN102183056 B CN 102183056B CN 201110135361 CN201110135361 CN 201110135361 CN 201110135361 A CN201110135361 A CN 201110135361A CN 102183056 B CN102183056 B CN 102183056B
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Abstract
The invention discloses an air flow full-seal-type smoke exhaust hood. Outdoor air is respectively sent to a first air flow adjustment static pressure tank and a second air flow adjustment static pressure tank by a first air supply fan and a second air supply fan; after the air flow is mixed uniformly in the air flow adjustment static pressure tanks, the air flow is sent out by two side seam air outlets at the diagonal positions of the smoke exhaust hood and two bottom seam air outlets positioned at the bottom part of the air flow adjustment static pressure tanks, thus a full-seal-type air curtain is formed; oil and smoke pollutants are isolated completely from an operator, moreover, under the mixing effect of the shearing force of air supply along an adjustment baffle at the two side seam air outlets at the diagonal positions and the separating force of a smoke exhaust fan, artificial whirlwind is formed, thus the discharging efficiency of the pollutants is improved; and simultaneously, the air supply of the bottom seam air outlets at the bottom part of the air flow adjustment static pressure tanks supplies air required by the combustion of the fuel, thus the fuel is combusted fully, and the aims of energy conservation and emission reduction are achieved.
Description
Technical field
The present invention relates to a kind of enclosure, specifically disclose a kind of air-flow totally enclosed type efficient discharge petticoat pipe.
Background technology
Along with the raising day by day of expanding economy and living standards of the people, the kitchen fume problem has become the focus of concern, and people begin more and more to recognize that kitchen fume is to the harmful effect of indoor environment.Kitchen fume mainly refers to the deep fat flue gas that cooking operation produces, and these flue gases are even more serious to the hazard ratio cigarette of human body.And kitchen fume has certain inertia force and buoyancy lift, also has strong permeability and viscosity, not only can pollute air in kitchen, if effectively do not control, also may bring bad impact to the indoor environment in contiguous zone space in addition.Therefore, control the key that the oil smoke diffusion becomes kitchen indoor air quality optimal control, generally acknowledged control mode is at cooking operation place's installation enclosure, utilizes the swabbing action of enclosure oil smoke to be held back or discharged outdoor.
It is shallow-layer type exhaust fume collecting hood that present enclosure on the market adopted more, and even some is the design that is close to flat " ultra-thin ", " streamline " shape.This design has only but reduced its oil smoke arresting efficiency in the pursuit appearance looks elegant.The cover of its gas collection is too shallow, almost holds oil smoke without any space more than needed, and the excessive diffusion of the oil smoke that has little time to take away is serious, is difficult to the indoor air quality that reaches safe.Also have in addition two kinds of improved slim machines: the one, add the blowing down air curtain in the body surrounding, another kind is body bottom surface declivity to be expanded extend to wall.Although before a kind ofly can stop some oil fume outer-runaways, can produce the top turbulent flow, increase the suction load.Rear a kind of the increasing the inside portion suction but reduced anterior suction, increased the weight of the harm of oil smoke to cooker.Two kinds are improved type and all fail to change the root problem that slim machine leaks greatly, pollution weighs.
Common deep suction type enclosure in addition, in the situation that adopt identical suction air quantity, the deep suction type enclosure is that oil smoke cover is got up to take out, suction cooking fume that can be wider, its dark type fuselage is convenient to the powerful motor of installation power, makes smoking rate greatly improve, and is large but the existence of deep suction type enclosure takes up room, noise is large, and the oil dripping oil smoke is taken out the problems such as unclean.
Another kind of common cabinet type enclosure, it is comprised of fume cupboard and special-purpose oil smoke machine, after starting, blower fan forms negative pressuren zone in cabinet, extraneous air replenishes to inside, the opening of fume cupboard front just forms an air inlet, oil smoke and other waste gas can't be escaped from, and guarantee the pumping-clean rate of oil smoke and nitrogen oxide.the negative pressure region of cabinet type smoke exhaust ventilator is about 0.32 cubic metre according to the study, smoke exhaust efficiency is greater than 95%, explanation oil smoke in the cabinet type smoke exhaust ventilator structure is difficult for overflowing, and its suction effect is better than the enclosure of other kinds, but the form that has adopted three side sealing to close due to cabinet type range hood, namely the normal material of hard that adopts stops that oil smoke is to the diffusion of both sides, rather than the flexible air curtain of employing, therefore can stop operator's action and sight line, make troubles to operation, in addition, if the amount that flue gas produces is larger, probably overflow from untight cooking operation one side, the operator is caused larger harm, make operator some limitation and inconvenience when culinary art.
Summary of the invention
Defective or deficiency for prior art the object of the invention is to, and a kind of air-flow totally enclosed type efficient discharge petticoat pipe is provided.This enclosure can utilize air curtain that pollutants from cooking fume and operator are isolated fully, produces by artificial cyclone the arresting efficiency that swirling eddy improves oil smoke simultaneously.
In order to realize above-mentioned technical assignment, the present invention adopts following technical solution:
A kind of air-flow Totally-enclosed type energy-saving efficient discharge petticoat pipe comprises:
Vertical the first rectification plenum chamber that be arranged in parallel and the second rectification plenum chamber, wherein: the end face of the first rectification plenum chamber is provided with the first air inlet, the side relative with the second rectification plenum chamber of the first rectification plenum chamber is provided with the first side slat seam air outlet, the length direction of this first side slat seam air outlet is vertical with horizontal plane, the bottom surface of the first rectification plenum chamber is provided with the first sill strip seam air outlet, and this first sill strip seam air outlet and the first side slat seam air outlet are separate; On the long side of described the first side slat seam air outlet, the first wind direction controllable register is installed, this the first wind direction controllable register overlaps with the first side slat seam air outlet in the projection on the first side slat seam plane, air outlet place, and the angle that the first wind direction controllable register and the first side slat stitch plane, air outlet place is 70 °～80 °; The end face of the second rectification plenum chamber is provided with the second air inlet, the side relative with the first rectification plenum chamber of the second rectification plenum chamber is provided with the second side slat seam air outlet, the length direction of this second side slat seam air outlet is vertical with horizontal plane, the bottom surface of the second rectification plenum chamber is provided with the second sill strip seam air outlet, and this second sill strip seam air outlet and the second side slat seam air outlet are separate; On the long side of described the second side slat seam air outlet, the second wind direction controllable register is installed, this the second wind direction controllable register overlaps with the second side slat seam air outlet in the projection on the second side slat seam plane, air outlet place, and the angle that the second wind direction controllable register and the second side slat stitch plane, air outlet place is 70 °～80 °; Described the first air inlet and the second air inlet diagonal angle setting; Described the first side slat seam air outlet and the diagonal angle setting of the second side slat seam air outlet;
Top shell, top shell top is provided with inlet scoop and exhaust outlet;
Smoke exhaust fan has air inlet and exhaust outlet on smoke exhaust fan;
At least one breeze fan has air inlet and exhaust outlet on breeze fan;
Described top shell is between the first rectification plenum chamber and the second rectification plenum chamber and be installed on the first rectification plenum chamber and the second rectification plenum chamber top;
Described smoke exhaust fan and breeze fan are installed in top shell, and air outlet and the exhaust outlet of described smoke exhaust fan join, and air inlet and the inlet scoop of described breeze fan join; Described the first air inlet and the second air inlet all join with the air outlet of breeze fan;
Between described the first rectification plenum chamber and the second rectification plenum chamber, separator is installed, this separator tilting is installed between the first rectification plenum chamber and the second rectification plenum chamber.
Other technologies of the present invention are characterized as:
Described enclosure comprises a breeze fan, air inlet and the inlet scoop of this breeze fan join, described the first air inlet joins by the air outlet of air-supply airduct and this breeze fan, and described the second air inlet joins by the air outlet of air-supply airduct and this breeze fan.
Described enclosure comprises the first breeze fan and two breeze fans of the second breeze fan, and the air inlet of the first breeze fan joins by air-supply airduct and inlet scoop, and the air outlet of the first breeze fan and the first air inlet join; The air inlet of the second breeze fan joins by air-supply airduct and inlet scoop, and the air outlet of the second breeze fan and the second air inlet join.
Angle between described separator and top shell bottom surface is 15 °～30 °.
The bottom of the madial wall of described the first rectification plenum chamber and the second rectification plenum chamber is equipped with oil trap, on described oil trap, catchment cup is installed.
One side of described the first rectification plenum chamber and the second rectification plenum chamber is equipped with bonnet.
The bottom of the madial wall of described bonnet is provided with oil trap, and catchment cup is installed on described oil trap.
The glass cement sealing is all adopted in the position that the position that the air outlet of the position that the position that the air outlet of described smoke exhaust fan and exhaust outlet join, the air inlet of described breeze fan and inlet scoop join, described the first air inlet and breeze fan joins and the air outlet of the second air inlet and breeze fan join.
Be equipped with blanket of glass wool or polyethylene on the madial wall of described the first rectification plenum chamber and the second rectification plenum chamber.
enclosure of the present invention is sent into outdoor air respectively in the first rectification plenum chamber and the second rectification plenum chamber by breeze fan, air-flow is after rectification plenum chamber internal mix is even, sent by two side slats seam air outlets that are arranged in enclosure diagonal position place and two sill strips seam air outlets being positioned at rectification plenum chamber bottom, form the totally enclosed type air curtain, pollutants from cooking fume and operator are isolated fully, and, the two side slats seam exits at diagonal position place along under the immixture of the draft of the shearing force of the air-supply of controllable register and smoke exhaust fan, form artificial cyclone, thereby improved the pollutant expulsion efficiency.Simultaneously, the air-supply of the sill strip of rectification plenum chamber bottom seam air outlet has replenished the required air of fuel combustion, makes full combustion of fuel, reaches the purpose of energy-saving and emission-reduction.
The present invention is air-flow totally enclosed type efficient discharge petticoat pipe, this draft type is stitched the introducing of air outlet by bar on the basis of traditional enclosure, realized the theory of totally enclosed type air curtain, it stops that by form air curtain between smoke exhaust ventilator and operator oil smoke is in indoor diffusion.And by the introducing of rectification plenum chamber, lengthened the mobile distance of air, dynamic pressure is converted into static pressure proportion to be increased, and has promoted the uniformity of air-out, has reduced equipment operation noise.Wherein be arranged in two side slat seam air outlets at place, enclosure diagonal angle, air-supply in opposite directions, form horizontal shear force, with the acting in conjunction of smoke exhaust fan middle part ascending air under, can form the whirlwind suction flow field of similar natural cyclone, namely " artificial cyclone ", improved the pollutant expulsion efficiency, reduces oil smoke to the harm of indoor environment and human body.
Enclosure of the present invention for the eliminating of kitchen fume, reduce oil smoke and the harm of human body created good Air Quality in Kitchen positive effect is arranged, can be used in household kitchen and commercial food and drink kitchen.
Enclosure of the present invention can have stronger anti-crossflow interference performance with less exhaust air rate efficient discharge except flue gas, flue gas and operating personnel's isolation can be improved the air quality of personnel workspace again, improves working environment, the protection health.Has advantages of high-efficient energy-saving environment friendly.
Enclosure of the present invention adopts integrated formation, and is simple in structure, easy installation and removal.
Description of drawings
Fig. 1 is enclosure perspective view of the present invention;
Fig. 2 is the interior structural representation of top shell of enclosure;
Fig. 3 is the A-A cutaway view of Fig. 1;
Fig. 4 is the B-B cutaway view of Fig. 1;
Fig. 5 is air-supply wind direction schematic diagram between the first rectification plenum chamber and the second rectification plenum chamber in enclosure of the present invention;
Fig. 6 is the structural representation of the first rectification plenum chamber;
Fig. 7 is the structural representation of the second rectification plenum chamber.
The present invention is described in further detail below in conjunction with drawings and Examples.
The specific embodiment
In air in kitchen the dust of floating and diffusion or pernicious gas control effectively process or discharging be in ventilation field one extremely important but not yet obtain the problem of fine solution.Based on this problem, the present invention is on the basis of original Smoking regime, form in conjunction with the jet distribution mode baffle plate that flexible air curtain replaces rigidity, with nuisance " cover " in enclosure, isolate fully with the operator, under the effect of air-supply jet and draft, form " artificial imperial whirlwind " simultaneously, improve contaminant exclusion efficient.
Enclosure of the present invention comprises:
vertical the first rectification plenum chamber 13 that be arranged in parallel and the second rectification plenum chamber 14, wherein: the end face of the first rectification plenum chamber 13 is provided with the first air inlet 15, the side relative with the second rectification plenum chamber 14 of the first rectification plenum chamber 13 is provided with the first side slat seam air outlet 17, the length direction of this first side slat seam air outlet 17 is vertical with horizontal plane is vertical setting, projection and first air inlet 15 along its length the two ends that lay respectively at first rectification plenum chamber 13 end faces of the first side slat seam air outlet 17 on the first rectification plenum chamber 13 end faces, the bottom surface of the first rectification plenum chamber 13 is provided with the first sill strip seam air outlet 19, this the first sill strip seam air outlet 19 and the first side slat seam air outlet 17 are separate, namely both do not connect, be equipped with on the long side of described the first side slat seam air outlet 17 and regulate air outlet angle the first wind direction controllable register 21, this the first wind direction controllable register 21 overlaps with the first side slat seam air outlet 17 in the projection on the first side slat seam air outlet 17 planes, place, and the angle that the first wind direction controllable register 21 and the first side slat stitch air outlet 17 planes, place is 70 °～80 °, the end face of the second rectification plenum chamber 14 is provided with the second air inlet 16, the side relative with the first rectification plenum chamber 13 of the second rectification plenum chamber 14 is provided with the second side slat seam air outlet 18, the length direction of this second side slat seam air outlet 18 is vertical with horizontal plane is vertical setting, projection and second air inlet 16 along its length the two ends that lay respectively at second rectification plenum chamber 14 end faces of the second side slat seam air outlet 18 on the second rectification plenum chamber 14 end faces, the bottom surface of the second rectification plenum chamber 14 is provided with the second sill strip seam air outlet 20, this the second sill strip seam air outlet 20 and the second side slat seam air outlet 18 are separate, namely both do not connect, be equipped with on the long side of described the second side slat seam air outlet 18 and regulate air outlet angle the second wind direction controllable register 22, this the second wind direction controllable register 22 overlaps with the second side slat seam air outlet 18 in the projection on the second side slat seam air outlet 18 planes, place, and the angle that the second wind direction controllable register 22 and the second side slat stitch air outlet 18 planes, place is 70 °～80 °, described the first air inlet 15 and the second air inlet 16 are positioned at sustained height and both diagonal angle settings, described the first side slat seam air outlet 17 and the 18 diagonal angle settings of the second side slat seam air outlet, wherein, the wind direction controllable register is mainly in order to guarantee that air-flow can send along certain angle, and baffle plate is excessive, the parameters such as the size of the whole device of meeting increase, weight, the sight line that can stop the operator, the initial cost of aggrandizement apparatus, thus increase the risk that device is promoted, used, baffle plate is too small, make the part air not bending to the inside just overflow along the baffle plate lower limb under pressure, affect wind direction.Wind direction controllable register of the present invention stitches air outlet in the projection in the plane of side slat seam air outlet institute with side slat and overlaps, and namely can guarantee desired air outlet angle, can not bring impact to setting and the operator of whole device again.in addition, along with reducing of wind direction (wind direction controllable register and side slat stitching the angle between plane, air outlet place), pressure is less, nuisance more easily is captured, the arresting efficiency of enclosure is higher, wind direction is the smaller the better from this point of view, if but angle has got hour, the rotary wind screen that forms imperfect, control weak effect, this is due to wind direction hour, eddy current core diminishes, rotary speed increases, the disturbance of air strengthens, make the flow field unstable, pernicious gas is escaped, the present invention is that the selection wind direction is 70 °～80 ° on the basis of a large amount of simulated experiments.
At least one breeze fan has air inlet and exhaust outlet on breeze fan;
Described top shell 5 is between the first rectification plenum chamber 13 and the second rectification plenum chamber 14 and be installed on the first rectification plenum chamber 13 and the second rectification plenum chamber 14 tops; The first rectification plenum chamber 13, the second rectification plenum chamber 14 and top cover 5 composition one tops and the both sides integral body to outer closure;
Described smoke exhaust fan 2 and breeze fan are installed in top shell 5, the air outlet of described smoke exhaust fan 2 and exhaust outlet 10 join, successively from air inlet, exhaust outlet 10 discharges of smoke exhaust fan 2, the air inlet of described breeze fan and inlet scoop 11 join oil smoke under the effect of smoke exhaust fan draft; Described the first air inlet 15 and the second air inlet 16 all join with the air outlet of breeze fan, are that the first rectification plenum chamber 13 and the second rectification plenum chamber 14 are sent into working air current;
Between described the first rectification plenum chamber 13 and the second rectification plenum chamber 14, separator 7 is installed, these separator 7 tiltings are installed between the first rectification plenum chamber 13 and the second rectification plenum chamber 14, and and the angle between top shell 5 bottom surfaces is 15 °～30 °, a kind of concrete mounting means, it is downward-sloping that separator 7 is positioned at one side of exhaust fume collecting hood rear side (namely cooking the opposite side of operation one side), the front side of separator is connected with the bottom of the front side of top shell 5, rear side is connected with bonnet, and the left and right sides is connected respectively at two rectification plenum chambers; When the separator 7, the oil smoke of larger particles clashes into separator 7, thereby is separated when oil smoke, and flows in the catchment cup of installing on the catchment cup installed on the rear portion wall of enclosure or enclosure bonnet along the separator 7 of inclination.Separator 7 can form by several blinds are staggered.
One concrete assembling mode, a breeze fan is installed in enclosure of the present invention, the air inlet of this breeze fan and inlet scoop 11 join, described the first air inlet 15 joins by the air outlet of air-supply airduct and this breeze fan, and described the second air inlet 16 joins by the air outlet of air-supply airduct and this breeze fan.
One concrete assembling mode, two breeze fans are installed in enclosure of the present invention, the air inlet that is respectively the first breeze fan 4 and the second breeze fan 3, the first breeze fans 4 joins with inlet scoop 11 by air-supply airduct 12, and the air outlet of the first breeze fan 4 and the first air inlet 15 join; The air inlet of the second breeze fan 3 joins with inlet scoop 11 by air-supply airduct 12, and the air outlet of the second breeze fan 3 and the second air inlet 16 join.
The bottom of the madial wall of above-mentioned the first rectification plenum chamber 13 and the second rectification plenum chamber 14 is equipped with oil trap 23, on this oil trap 23, catchment cup 24 is installed, and this catchment cup 24 can be arranged on the end of oil trap 23 particularly.
In the actual installation process, when the enclosure rear portion during without other members such as bodies of wall, can a bonnet 6 be installed at a side (being a side of not operation) of the first rectification plenum chamber 13 and the second rectification plenum chamber 14, furtherly, this bonnet 6 is installed between the first rectification plenum chamber 13 and the second rectification plenum chamber 14 and with the first rectification plenum chamber 13 and the second rectification plenum chamber 14 and forms three seals.
The bottom of the madial wall of above-mentioned bonnet 6 is provided with oil trap 23, catchment cup 24 is installed on described oil trap 23, this catchment cup 24 can be arranged on the end of oil trap 23 particularly, the surface area that produces in cooking process oil can be slipped to downwards in catchment cup smoothly, can not drip on the kitchen range face and affects health.
The glass cement sealing is all adopted in the position that the position that the air outlet of the position that the position that the air outlet of above-mentioned smoke exhaust fan 2 and exhaust outlet 10 join, the air inlet of above-mentioned breeze fan and inlet scoop 11 join, above-mentioned the first air inlet 15 and breeze fan joins and the air outlet of the second air inlet 16 and breeze fan join, the position that airduct and the first air inlet 15 and the second air inlet 16 join of perhaps blowing, or air-supply airduct 12 seals with glass cement with the position that inlet scoop 11 joins, to prevent that air is to exosmosis.
Be equipped with blanket of glass wool or polyethylene on the madial wall of above-mentioned the first rectification plenum chamber 13 and the second rectification plenum chamber 14, to reach the effect of eliminating the noise.
More integrated in order to make on the enclosure structure, can one shell 1 be installed in its outside, and offer corresponding inlet scoop and exhaust outlet on this shell 1.
The kitchen fume exhauster for kitchen fume exhausting type that enclosure of the present invention is different from the past, its totally enclosed type air curtain, pollutants from cooking fume and operator are isolated fully, stop that oil smoke can not have influence on operator's activity in indoor diffusion, its gas flow jet poor direction is facing to the operator, so also can operating personnel's is not uncomfortable because blowing feeling causes.Under the acting in conjunction of the shearing force that in the ascending air at the middle part of this external enclosure and enclosure, the horizontal direction of two of the place, diagonal angle side slat seam air outlets is blown, can form the whirlwind suction flow field of similar natural cyclone, namely produce " artificial tornado effect ", improve contaminant trapping and expulsion efficiency, be conducive to improve indoor air quality.Simultaneously, the air-supply of the sill strip of rectification plenum chamber bottom seam air outlet has replenished the required air of fuel combustion, and fuel is fully burned, and reaches the purpose of energy-saving and emission-reduction.Air-out jet length of the present invention is little, and wind speed is low, does not affect the cooking stove flame combustion.Owing to adopting the rectification plenum chamber to add the scrak type air outlet, promote the uniformity of air-out in addition, reduced equipment operation noise.Be applicable to the smoke evacuation of all kinds of catering trades or household kitchen.
use this air-flow totally enclosed type efficient discharge petticoat pipe cooking-fume exhauster draft type different from the past, by breeze fan, outdoor air is sent into the rectification plenum chamber along the air-supply airduct, after rectification plenum chamber internal mix is even, bar seam air outlet by two bars seam air outlets of enclosure diagonal both sides and two rectification plenum chamber bottoms is sent, form the totally enclosed type air curtain, pollutants from cooking fume and operator are isolated fully, and under the immixture of the draft of smoke exhaust fan, form artificial cyclone, superposition with the smoke exhaust fan draft, more be conducive to enclosure and take oil smoke away.
Embodiment 1:
Set up air-flow totally enclosed type efficient discharge petticoat pipe numerical computations model according to actual operating position, room length * wide * height is 4800 * 2400 * 2400mm; Size length * wide * the height of enclosure is 900 * 500 * 600mm, and the enclosure lower edge is 1200 mm apart from ground level; Wherein the first rectification plenum chamber is with the big or small identical of the second rectification plenum chamber and be: length * wide * height is 500 * 50 * 600mm, the kitchen range top is long * wide be 2400 * 600mm; The kitchen range top is 900mm apart from ground level; The pollution sources radius is 300mm, and the pollution sources height is 1200 mm, and the size of the first side slat seam air port and the second side slat seam air outlet is: the length * wide 580 * 20mm of being, air-out speed is 1.5m/s.In this embodiment, the first breeze fan 4 and the second breeze fan 3 are installed in top shell 5, in the structure of concrete enclosure, the angle on the first wind direction controllable register 21 and the first side slat seam air outlet 17 planes, place is 75 °, the angle on the second wind direction controllable register 21 and the second side slat seam air outlet 17 planes, place is 75 °, and the angle between separator 7 and top shell 5 bottom surfaces is 30 °.
In order to verify that air-flow totally enclosed type efficient discharge petticoat pipe to obstruct and the pressure-vaccum effect of oil smoke, need know air outlet section VELOCITY DISTRIBUTION situation, the gas flow in the kitchen is that low speed flows substantially, it can be considered as incompressible fluid; Air temperature variations is little simultaneously, and namely variable density is less, can think that therefore indoor air flows meets the Boussinesq hypothesis.Select for this reason and adopt κ-ε two-equation model to carry out analog computation, on the basis that governing equation is supposed, obtain each hourly value governing equation of κ-ε turbulent flow Mathematical Modeling in the above, represent with tensor form.Set up the governing equation group as follows:
Continuity equation:
The equation of momentum:
Concentration equation:
Energy equation:
Wherein:
I=1,2,3; J=1,2,3; uBe room air speed;
kBe turbulence pulsation kinetic energy;
TBe indoor air temperature;
μBe the laminar flow dynamic viscosity;
μ t Be the turbulent flow dynamic viscosity coefficient;
pBe air pressure;
ρBe atmospheric density;
C p Be specific heat at constant pressure;
qBe heat flow density;
βBe the fluid volume coefficient of expansion;
cBe flue gas concentration;
F c Be the flue gas incidence;
c c Be constant;
P r Be Prandtl number.
Adopt finite volume method that above-mentioned governing equation is carried out discrete, discrete scheme is selected the Second-order Up-wind form, and adopts the SIMPLE algorithm that discrete equation is found the solution, when speed term and pressure term residual values all less than 10
-3, the residual values of simultaneous temperature and component is all less than 10
-6The time, the convergence of governing equation group, can obtain the VELOCITY DISTRIBUTION on the air outlet section this moment.
If the size of enclosure length * wide * height is 900 * 500 * 900mm, exhaust air rate is 1.0m
3/ s, slot outlet is of a size of 580 * 20mm, and speed is 1.5m/s, supposes CO
2Burst size be 0.24462kg/m
3
The wind sent of side slat seam air outlet has formed complete air curtain between enclosure and operator with this understanding, the radiant heat that produces every cooking stove and the diffusion of oil smoke.And under the acting in conjunction of the shearing force of two side slats seam air outlet horizontal directions at enclosure blower fan middle part ascending air and place, enclosure diagonal angle, according to aerodynamic principle, form the whirlwind suction flow field of similar " natural tornado effect ", improved the pollutant expulsion efficiency.
Embodiment 2:
This embodiment difference from Example 1 is in the situation that guarantee that air output is constant, to only have a breeze fan in this embodiment, to reduce initial cost.
Embodiment 3:
the difference of this embodiment and embodiment 1 is: the angle on the first wind direction controllable register 21 and the first side slat seam air outlet 17 planes, place is 65 °, the angle on the second wind direction controllable register 21 and the second side slat seam air outlet 17 planes, place is 65 °, the air curtain wind direction is the imperfect of the rotary wind screen that forms when being 65 ° of the angle on controllable register and side slat seam plane, air outlet place, control weak effect, this is due to wind direction hour, eddy current core diminishes, rotary speed increases, the disturbance of air strengthens, make the flow field unstable, pernicious gas is escaped, the pollutant of air-flow totally enclosed type efficient discharge petticoat pipe takes out Efficiency Decreasing.Therefore, this embodiment illustrates that the air-supply angle can not be the smaller the better.
Claims (9)
1. an air flow full-seal-type smoke exhaust hood, is characterized in that, this enclosure comprises:
vertical the first rectification plenum chamber (13) that be arranged in parallel and the second rectification plenum chamber (14), wherein: the end face of the first rectification plenum chamber (13) is provided with the first air inlet (15), the side relative with the second rectification plenum chamber (14) of the first rectification plenum chamber (13) is provided with the first side slat seam air outlet (17), the length direction of this first side slat seam air outlet (17) is vertical with horizontal plane, the bottom surface of the first rectification plenum chamber (13) is provided with the first sill strip seam air outlet (19), this the first sill strip seam air outlet (19) is separate with the first side slat seam air outlet (17), on the long side of described the first side slat seam air outlet (17), the first wind direction controllable register (21) is installed, this the first wind direction controllable register (21) overlaps with the first side slat seam air outlet (17) in the projection on the first side slat seam air outlet (17) plane, place, and the angle that the first wind direction controllable register (21) and the first side slat stitch air outlet (17) plane, place is 70 °～80 °, the end face of the second rectification plenum chamber (14) is provided with the second air inlet (16), the side relative with the first rectification plenum chamber (13) of the second rectification plenum chamber (14) is provided with the second side slat seam air outlet (18), the length direction of this second side slat seam air outlet (18) is vertical with horizontal plane, the bottom surface of the second rectification plenum chamber (14) is provided with the second sill strip seam air outlet (20), and this second sill strip seam air outlet (20) is separate with the second side slat seam air outlet (18), on the long side of described the second side slat seam air outlet (18), the second wind direction controllable register (22) is installed, this the second wind direction controllable register (22) overlaps with the second side slat seam air outlet (18) in the projection on the second side slat seam air outlet (18) plane, place, and the angle that the second wind direction controllable register (22) and the second side slat stitch air outlet (18) plane, place is 70 °～80 °, described the first air inlet (15) and the second air inlet (16) diagonal angle setting, described the first side slat seam air outlet (17) and the second side slat seam air outlet (18) diagonal angle setting,
Top shell (5), top shell (5) top is provided with inlet scoop (11) and exhaust outlet (10);
Smoke exhaust fan (2), smoke exhaust fan has air inlet and air outlet on (2);
At least one breeze fan has air inlet and air outlet on breeze fan;
Described top shell (5) is positioned between the first rectification plenum chamber (13) and the second rectification plenum chamber (14) and is installed on the first rectification plenum chamber (13) and the second rectification plenum chamber (14) top;
Described smoke exhaust fan (2) and breeze fan are installed in top shell (5), and the exhaust outlet (10) of the air outlet of described smoke exhaust fan (2) and top shell (5) joins, and the air inlet of described breeze fan and inlet scoop (11) join;
Described the first air inlet (15) and the second air inlet (16) all join with the air outlet of breeze fan;
Between described the first rectification plenum chamber (13) and the second rectification plenum chamber (14), separator (7) is installed, this separator (7) tilting is installed between the first rectification plenum chamber (13) and the second rectification plenum chamber (14).
2. enclosure as claimed in claim 1, it is characterized in that, described enclosure comprises a breeze fan, the air inlet of this breeze fan and inlet scoop (11) join, described the first air inlet (15) joins by the air outlet of air-supply airduct and this breeze fan, and described the second air inlet (16) joins by the air outlet of air-supply airduct and this breeze fan.
3. enclosure as claimed in claim 1, it is characterized in that, described enclosure comprises the first breeze fan (4) and (3) two breeze fans of the second breeze fan, the air inlet of the first breeze fan (4) joins by air-supply airduct (12) and inlet scoop (11), and the air outlet of the first breeze fan (4) and the first air inlet (15) join; The air inlet of the second breeze fan (3) joins by air-supply airduct (12) and inlet scoop (11), and the air outlet of the second breeze fan (3) and the second air inlet (16) join.
4. enclosure as claimed in claim 1, is characterized in that, the angle between described separator (7) and top shell (5) bottom surface is 15 °～30 °.
5. enclosure as claimed in claim 1, is characterized in that, the bottom of the madial wall of described the first rectification plenum chamber (13) and the second rectification plenum chamber (14) is equipped with oil trap (23), and catchment cup (24) is installed on described oil trap (23).
6. enclosure as claimed in claim 1, is characterized in that, a side of described the first rectification plenum chamber (13) and the second rectification plenum chamber (14) is equipped with bonnet (6).
7. enclosure as claimed in claim 6, is characterized in that, the bottom of the madial wall of described bonnet (6) is provided with oil trap (23), and catchment cup (24) is installed on described oil trap (23).
8. enclosure as claimed in claim 1, it is characterized in that, the glass cement sealing is all adopted in the position that the air outlet of the position that the air outlet of the position that the position that the exhaust outlet (10) of the air outlet of described smoke exhaust fan (2) and top shell (5) joins, the air inlet of described breeze fan and inlet scoop (11) join, described the first air inlet (15) and breeze fan joins and the second air inlet (16) and breeze fan joins.
9. enclosure as claimed in claim 1, is characterized in that, is equipped with blanket of glass wool or polyethylene on the madial wall of described the first rectification plenum chamber (13) and the second rectification plenum chamber (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110135361 CN102183056B (en) | 2011-05-24 | 2011-05-24 | Air flow full-seal-type smoke exhaust hood |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110135361 CN102183056B (en) | 2011-05-24 | 2011-05-24 | Air flow full-seal-type smoke exhaust hood |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102183056A CN102183056A (en) | 2011-09-14 |
| CN102183056B true CN102183056B (en) | 2013-05-08 |
Family
ID=44569308
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110135361 Expired - Fee Related CN102183056B (en) | 2011-05-24 | 2011-05-24 | Air flow full-seal-type smoke exhaust hood |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102183056B (en) |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102434901B (en) * | 2011-12-13 | 2013-08-07 | 西安建筑科技大学 | Ring-shaped edge part airflow totally enclosed type kitchen assistant smoke discharge system |
| CN105465861A (en) * | 2015-12-25 | 2016-04-06 | 兰祯豪 | Combined type smoke exhauster with high air exhausting efficiency |
| CN105485747A (en) * | 2016-02-04 | 2016-04-13 | 郑峻山 | Convection type rectifying edge air suction lampblack removal mode |
| CN105928028B (en) * | 2016-06-23 | 2018-01-26 | 洛阳理工学院 | A kind of oily fume exhauster of protection from fumes diffusion |
| CN106402972A (en) * | 2016-11-07 | 2017-02-15 | 宁波方太厨具有限公司 | Smoke exhauster |
| CN106765418A (en) * | 2017-02-23 | 2017-05-31 | 中国舰船研究设计中心 | A kind of environmentally friendly beam soot device peculiar to vessel |
| WO2018157664A1 (en) * | 2017-02-28 | 2018-09-07 | Lien Fue Sang | Fume cyclonic-collection device, range hood, and kitchen fume-extracting and cooking equipment |
| CN107300238B (en) * | 2017-06-06 | 2019-08-02 | 西安建筑科技大学 | A kind of cylindrical air vortex to be opened/closed side intake and blowing device |
| CN107781886B (en) * | 2017-11-27 | 2019-07-19 | 杨肇 | One kind zero and formula low-carbon oil fume purifier and purification system |
| US10578315B2 (en) * | 2017-12-21 | 2020-03-03 | Franke Technology And Trademark Ltd | Exhaust hood with forced air injection |
| CN108286725A (en) * | 2018-03-14 | 2018-07-17 | 杨肇 | High static pressure cooking oil smoke processing apparatus, lampblack absorber |
| CN110631066B (en) * | 2018-06-25 | 2021-04-06 | 青岛海尔智慧厨房电器有限公司 | Air curtain kitchen range |
| CN109028241A (en) * | 2018-10-10 | 2018-12-18 | 珠海格力电器股份有限公司 | A kind of control system, method and kitchen ventilator adjusting kitchen ventilator air curtain wind-force size |
| CN109307582B (en) * | 2018-11-30 | 2020-11-10 | 重庆大学 | Wind field detection device and detection method of additive manufacturing equipment |
| CN114165877B (en) * | 2021-11-17 | 2023-09-26 | 上海外高桥造船有限公司 | Air-conditioning exhausting end device for restaurant |
| CN116000045B (en) * | 2022-11-28 | 2023-10-17 | 天津宏基伟业科技发展有限公司 | Automatic slag and dust removing device for slag and dust removing assembly and cutting machine |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN102183056A (en) | 2011-09-14 |
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