CN2620827Y

CN2620827Y - Oil-proof oil-fume extractor

Info

Publication number: CN2620827Y
Application number: CN 03245479
Authority: CN
Inventors: 张凤杰
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-04-17
Filing date: 2003-04-17
Publication date: 2004-06-16
Anticipated expiration: 2013-04-17

Abstract

An oil resistent ventilator includes an impeller, an electromotor, a fan crust and a petticoat pipe. The impeller is connected with a motor shaft, the electromotor is arranged in the fan crust, the petticoat pipe is connected to the lower end of the fan crust, the top of the fan crust is provided with an exhaust port, the fan crust is an almost involute-shaped turbine crust and the impeller is positioned in the center of the turbine crust, one end which is corresponding to the impeller has an inlet opening; a cylinder is arranged beneath the exhaust port of the fan crust, the ventage end of the upper end of the cylinder is positioned in the exhaust port, and an air outlet is left between, the lower end of the exhaust port of the fan crust is communicated with the inferior petticoat pipe; the external end of the turbine crust circles the outer side of the cylinder to a certain angle and then intersects with the cylinder, a helical opening is formed between the upper edge of the external end of the turbine crust and the upper end of the cylinder. The impeller of the utility model produce the whirlwind in the turbine crust, the whirlwind is vented out to a flue from the top outside of the cylinder, and the subpressure is formed in the cylinder, the oil and the smoke of the petticoat pipe at the lower end is vented out upwards from the exhaust port by utilizing the subpressure, thus avoiding the oil and the smoke to contact with the impeller and the inner sides of the electromotor and the fan crust. Besides, the wind blown out from an upright blowhole of a wind board forms a downward helical wind wall; the wind drawn out from a transverse blowhole forms a wind wall covering the middle part of the wind board underside under the effect of a wind screen, and the direction of the upright wind is changed under the action of a side windscreen at the lower edge of the petticoat pipe to form a taper-shaped wind curtain.

Description

The oily dirt free smoke exhaust

Technical field

The utility model relates to a kind of smoke exhaust, and the oily dirt free smoke exhaust that particularly a kind of oil smoke does not contact, exempts to clean with impeller and inner and outer shell is mainly used in the kitchen in family kitchen and dining room, restaurant.

Background technology

The impeller of existing smoke exhaust and housing inboard with directly contacted by mist extractor, need often to clean, unusual trouble, impeller is stained with the oil back and is influenced mist extractor efficient, the increase energy consumption influences motor service life.

Summary of the invention

The purpose of this utility model just provides a kind of oily dirt free smoke exhaust.

The technical solution of the utility model is: comprise impeller, motor, the crust of weathering and petticoat pipe, impeller is connected with motor shaft, motor is loaded in the crust of weathering, petticoat pipe is connected crust of weathering lower end, exhaust opening is arranged at crust of weathering top, the described crust of weathering is the volute of approximate involute shape, and impeller is positioned at the central authorities of volute, at an end of corresponding impeller air inlet is arranged; Below the crust of weathering exhaust opening frustum cone cylinder is housed, the osculum end of its upper end is positioned at exhaust opening, leaves air outlet between the two, and the lower end of described frustum cone cylinder communicates with the petticoat pipe of below; Intersect with it behind the certain angle of the described frustum cone cylinder outside outer end of described volute, forms the spiral air port between outer end top edge and frustum cone cylinder upper end.

The described crust of weathering, impeller and motor all have two covers, and be arranged symmetrically in circular cone tube both sides, near place, two ends symmetric position bending wind hole with the same rotation direction of impeller is arranged at the base plate of the crust of weathering, in this outside, bending wind hole deep bead protruding upward is arranged, at the polylith whirlwind shelves of the inboard oriented direction inclination of this deep bead; In described crust of weathering floor below one parallel aerofoil is arranged, into mouth is arranged in the central, and there is crimp upwards at its edge, near the periphery place upright blowhole is arranged at aerofoil, this upright blowhole and central authorities advance horizontal blowhole is arranged between the mouth, in the outside, upper end, this wind hole deep bead and a plurality of whirlwind shelves are arranged; There is the horizontal baffle plate that blows in the outside, lower end in this horizontal blowhole; Have in described petticoat pipe lower end and to bend towards the into crosswind retaining of mouth central authorities.

Outside described exhaust opening, be provided with the oil collection box of annular.

Outside the described crust of weathering, be provided with shell body.

The utility model impeller produces the top of spiral wind outside frustum cone cylinder and discharges to flue in volute, in frustum cone cylinder, form negative pressure, utilize this negative pressure the oil smoke in the petticoat pipe of below is upwards discharged exhaust opening, thereby avoided contacting of oil smoke and impeller and motor, crust of weathering inboard.In addition, the wind that blows out from the upright blowhole of aerofoil forms downward spiral brattice; The wind of drawing from horizontal blowhole forms the brattice that covers middle part below the aerofoil under the effect of deep bead, under the style of the crosswind of petticoat pipe lower limb retaining, to found blowing change wind direction and blow to into mouth central authorities, formed a Tapered Windscreen, the comprehensive function of above-mentioned each windbreak has stoped contacting of oil smoke and each parts surface, makes the whole smoke exhaust really accomplish oily dirt free.

Description of drawings

Fig. 1 is the utility model front half sectional view;

Fig. 2 is the utility model crust of weathering front section view;

Fig. 3 is the vertical view of Fig. 2;

Fig. 4 is the vertical view of Fig. 2 base plate;

Fig. 5 is the B-B cutaway view of Fig. 4;

Fig. 6 is the vertical view of the utility model aerofoil;

Fig. 7 is the rearview of Fig. 6;

Fig. 8 is the C-C cutaway view of Fig. 7.

The specific embodiment

Referring to Fig. 1-Fig. 8, the utility model comprises impeller 4, motor 10, the crust of weathering 3, petticoat pipe 2, impeller 4 is connected with the axle of motor 10, motor is loaded in the crust of weathering 3, petticoat pipe 2 is connected the lower end of the crust of weathering 3, and the crust of weathering 3 has exhaust opening, is provided with the oil collection box 9 of annular on this exhaust opening, above the oil collection box 9 opening is arranged at this, the outward flange of opening is used for connecting smoke exhaust pipe 8.

The described crust of weathering is the volute of two approximate involute shapes, is arranged symmetrically in the both sides of frustum cone cylinder 5, and an impeller 4 respectively is equipped with in the central authorities in the spiral case, at an end of corresponding impeller 4 air inlet 11 is arranged; Below the crust of weathering 3 exhaust openings frustum cone cylinder 5 is housed, the osculum end of its upper end is positioned at the exhaust opening lower end, leaves air outlet 12 between the two, and the lower end of described frustum cone cylinder 5 communicates with the petticoat pipe of below 2; Intersect with it behind described frustum cone cylinder 5 outside certain angles at described volute air outlet place 31, formation spiral air port between the upper end of the top edge of outer end and frustum cone cylinder 5.

Near place, two ends symmetric position bending wind hole 62 with impeller 4 same rotation directions is arranged at the base plate 6 of the crust of weathering 3, deep bead protruding upward 63 is arranged, the polylith whirlwind shelves 61 that tilt in the inboard oriented direction of this deep bead in its outside; One parallel aerofoil 7 is arranged below described crust of weathering base plate 6, into mouth is arranged in the central, there is crimp 74 upwards at its edge, there is upright blowhole 71 at close periphery place at aerofoil 7, this upright blowhole and central authorities advance horizontal blowhole 72 is arranged between the mouth, in this outside, horizontal blowhole upper end deep bead 722 and a plurality of whirlwind shelves 721 are arranged; There is the horizontal baffle plate 723 that blows in the outside, lower end in this horizontal blowhole; Have in the lower end of described petticoat pipe 2 and to bend towards the into crosswind retaining 22 of mouth central authorities.

Outside the described crust of weathering 3, be provided with shell body 1.

The fresh air that the utility model utilizes impeller to suck, compression through spiral case produces enough blast, helical-body 31 through frustum cone cylinder 5 top-surface cambers forms spiral wind again, this spiral wind can be compressed oil smoke, and utilize the tapering of frustum cone cylinder 5 and wind speed, blast, in the lower end of frustum cone cylinder, form enough negative pressure, utilize this negative pressure and whirlwind that oil smoke is wrapped again, be drawn to exhaust opening, and rotating drain into outdoor, thereby avoided contacting of oil smoke and impeller and motor, inner casing, solved the suction problem simultaneously again.In addition, the rotation wind of drawing from the upright blowhole 71 of aerofoil 7 forms brattice, and oil smoke can be wrapped and compress, and is rotating the center of pressing to and is entering the mouth place, and the isolation progradation is arranged.In addition, under the horizontal effect of blowing deep bead 723 of aerofoil 7, utilize the wind of drawing from horizontal blowhole 72 can be with oil smoke and bottom surface isolation, therefore, formed two wind at the body lower surface and isolated, secondary advances, oil smoke is housed in the Tapered Windscreen, and, places in the middle of the mouth through compression once more.Be stained with oil in order to prevent frustum cone cylinder 5 inboards, frustum cone cylinder 5 and aerofoil 7 advance mouth around leave annular tuyere, utilize the whirlwind of drawing between aerofoil 7 inner surfaces and the crust of weathering base plate 6 to carry out secondary rotation compression, oil smoke is converged to the axle center by the crimp 74 and the whirlwind shelves 73 of aerofoil 7, utilize the negative pressure that form in the frustum cone cylinder 5 that this oil smoke that is compressed to the axle center is drawn to exhaust opening again, rotating drain into outdoor.Thereby really reach the purpose of complete machine oily dirt free.

Claims

1, a kind of oily dirt free smoke exhaust, comprise impeller, motor, the crust of weathering and petticoat pipe, impeller is connected with motor shaft, motor is loaded in the crust of weathering, petticoat pipe is connected crust of weathering lower end, and exhaust opening is arranged at crust of weathering top, it is characterized in that: the described crust of weathering is the volute of approximate involute shape, impeller is positioned at the central authorities of volute, at an end of corresponding impeller air inlet is arranged; Below the crust of weathering exhaust opening frustum cone cylinder is housed, the osculum end of its upper end is positioned at exhaust opening, leaves air outlet between the two, and the lower end of described frustum cone cylinder communicates with the petticoat pipe of below; Intersect with it behind the certain angle of the described frustum cone cylinder outside outer end of described volute, forms the spiral air port between outer end top edge and frustum cone cylinder upper end.

2, oily dirt free smoke exhaust according to claim 1, it is characterized in that: the described crust of weathering, impeller and motor all have two covers, and be arranged symmetrically in circular cone tube both sides, near place, two ends symmetric position bending wind hole with the same rotation direction of impeller is arranged at the base plate of the crust of weathering, in this outside, bending wind hole deep bead protruding upward is arranged, at the polylith whirlwind shelves of the inboard oriented direction inclination of this deep bead; In described crust of weathering floor below one parallel aerofoil is arranged, into mouth is arranged in the central, and there is crimp upwards at its edge, near the periphery place upright blowhole is arranged at aerofoil, this upright blowhole and central authorities advance horizontal blowhole is arranged between the mouth, in the outside, upper end, this wind hole deep bead and a plurality of whirlwind shelves are arranged; There is the horizontal baffle plate that blows in the outside, lower end in this horizontal blowhole; Have in described petticoat pipe lower end and to bend towards the into crosswind retaining of mouth central authorities.

3, oily dirt free smoke exhaust according to claim 1 is characterized in that: the oil collection box that is provided with annular outside described exhaust opening.

4, according to claim 1,2 or 3 described oily dirt free smoke exhausts, it is characterized in that: outside the described crust of weathering, be provided with shell body.