CN2458539Y

CN2458539Y - Pneumatic screw propeller slinger

Info

Publication number: CN2458539Y
Application number: CN 00252094
Authority: CN
Inventors: 汤健中
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-10-12
Filing date: 2000-11-22
Publication date: 2001-11-07
Anticipated expiration: 2010-11-22

Abstract

The utility model relates to a pneumatic screw propeller slinger, which is a kind of kitchen cooking fume exhauster. The pneumatic screw propeller slinger is arranged in a fume pipeline of the cooking fume exhauster. The utility model uses the wind force of fume flow to drive the high-speed rotation of screw propeller impellers. When oil drops are hit by the screw propeller impellers, the oil drops are thrown off to a peripheral pipe wall to flow down. The utility model is characterized in that oil blocking grooves are arranged on screw propeller vanes to effectively prevent the oil drops from being floated from the top surfaces of the screw propeller vanes to obviously enhance oil removal efficiency, the utility model is provided with multi-stage screw propeller impellers which are connected in series to reach the effect that the oil removal efficiency is superposed, and secondarily the utility model adopts vertical obliquity type vanes to make the number of vane installation increased by three times. The utility model has the advantages of high probability for oil hit and good oil removal effect.

Description

Wind-driven oil (from cooking fume) propeller

The utility model relates to the kitchen smoke exhaust ventilator.

The inventor once disclosed a kind of screw oil expeller on China Patent No. is 91203024.0 patent, likeness in form children's " windmill " toy, once meeting wind rotation automatically, it is to be contained in the exhaust gases passes of smoke exhaust ventilator, propeller blade and airflow direction have an inclination drift angle, utilize flow of flue gas wind-force produced that circumferential motive force drives the screw impeller rotates at a high speed, the oil droplet in the flue gas is run into atwirl propeller blade and is thrown on the bustle pipe wall and flows down.But result of the test, deoiling effect is not obvious, because some oil droplet has floated in the past with the wind, is not separated.And have only one-level screw impeller, it is also little to get rid of oily effect.In addition, because assembly screw impeller dynamic balancing characteristic is poor, thereby noise is also corresponding has increased.

Main purpose of the present utility model is further to improve oil removal efficiency, and another purpose is to reduce noise and manufacturing cost.

Main purpose of the present invention: according to total inventive concept, two stand-alone solutions have been proposed: first stand-alone solution: a kind of wind-driven oil (from cooking fume) propeller, be contained in the exhaust gases passes, comprise the screw impeller, fixed axis, bracing strut and slinger bustle pipe, it is characterized in that: described screw impeller is made up of inner wheel hub and radial propeller blade radially, a drift angle β tilts between this propeller blade and the airflow direction, this β angle is in 3～87 degree scopes, this wind-driven oil (from cooking fume) propeller is a multiple coil oar slinger, and it is formed among being serially connected in a slinger bustle pipe by several screw impellers, to play the Overlay of deoiling effect.Second stand-alone solution: a kind of wind-driven oil (from cooking fume) propeller, be contained in the exhaust gases passes, comprise the screw impeller, fixed axis, bracing strut and slinger bustle pipe, it is characterized in that: the screw impeller is made up of inner wheel hub and radial propeller blade radially, propeller blade and drift angle β of airflow direction inclination, this β angle is in 3-87 degree scope, from the cross section of propeller blade, on the end that the flue gas of blade flows out, be provided with the retaining oil groove, the length of this retaining oil groove is by the inner wheel hub place of propeller blade, extend to the end of blade external diameter along blade radial, this oil groove end is uncovered always.

As shown in Figure 7, after oil droplet is run into the propeller blade of rotation at a high speed with air-flow, because inertia force effect, oil droplet is pasting blade surface in the flat slit import department inflow shelves oil groove of retaining oil groove, and under action of centrifugal force, oil droplet in the oil groove is thrown on the slinger bustle pipe perisporium along oil groove radially and flows down, and the flue gas behind the separated oil droplet then flows away from the outside of retaining oil groove, has effectively stoped oil droplet to float the disadvantage of walking from the helical blade end face.

The purpose of this utility model can also reach by following measure: (1) described retaining oil groove has one-sided retaining oil groove and two kinds of forms of bilateral retaining oil groove; (2) should to make elliptic flow linear for the retaining oil groove, to reduce gas-flow resistance; (3) I type screw impeller is made up of inner wheel hub and propeller blade, and the II type is to add an outer wheel hub on the structure of I type again, to strengthen the bulk strength of screw impeller, reduces vibration noise; (4) described outer wheel hub is made the horn mouth formula, helps oil droplet and flows down along the bustle pipe perisporium downwards sideling, splashes with air-flow to avoid oil droplet vertically to be flushed on the bustle pipe wall along the retaining oil groove; (5) also can load onto rolling bearing on the inner wheel hub of screw impeller, to reduce the resistance of high speed rotating; (6) in order further to improve oil removal efficiency, can adopt plural serial stage screw impeller, to reach the effect of oil removal rate stack.The direction of rotation of several screw impellers also can take just changeing counter-rotating collision frequency not, improves oil removal efficiency; (7) form an inclination drift angle β between propeller blade and the airflow direction, this β angular region is the 3-87 degree.The β angle be a vertical dip angle formula blade less than 45 degree, greater than 45 degree be level inclination formula blade, vertical dip angle formula blade is better than horizontal, reason be the blade quantity of installing than horizontal many 2-3 times, clash into the probability height of oil droplet, and gas-flow resistance is also little; (8) blade quantity of screw impeller can be by 3 to 32, and optimal number is the 8-16 sheet.(9) inner surface of slinger bustle pipe has 3 kinds of shapes: 1) light wall shape; 2) corrugated; 3) zigzag, both oil droplets that can more effectively dam of back.

Another purpose of the present utility model is achieved in that adopt with oil resistant heatproof engineering plastics (1) is the injection mo(u)lding screw impeller of raw material, its advantage is: propeller blade wheel injection mold reach the dynamic balancing check revise disposable qualified after, each impeller of producing later on all is to reach dynamically balanced qualified products, do not need that each all will go to do dynamic balance running as fabricated impeller, not only reduced manufacturing cost but also can effectively guarantee to reduce the purpose of noise, plastic impeller also has the advantage of oily dirt free.

The utility model is compared the advantage that is had with background technology:

(1) adopt vertical dip angle formula blade can be increased to 3 times of 16 blades increases by 4 than the number of blade capacity of the level inclination formula slinger of prior art, the collision rate of blade and oil droplet also strengthens 3 times, and gas-flow resistance also significantly reduces, owing to change plural serial stage screw slinger into, it gets rid of the remarkable result that oily effect can obtain the increment stack simultaneously.

(2) get rid of oily impeller and be provided with the retaining oil groove, overcome oil droplet and floated the shortcoming walked with the wind, further improved oil removal efficiency.

(3) adopt significantly to reduce and rotate unbalanced noise and production cost at a high speed with the oily impeller of getting rid of of engineering plastics injection mo(u)lding.

Drawing explanation and most preferred embodiment:

Fig. 1, Fig. 2, Fig. 3 implement illustration for the single step helical oar slinger of band retaining oil groove.Fig. 1 is the B-B view of Fig. 3, and Fig. 2 is the A-A cutaway view of Fig. 3, and Fig. 3 is the C-C view of Fig. 2.

Fig. 4 implements illustration for the plural serial stage screw slinger of band retaining oil groove.

Fig. 5 is flaring screw impeller embodiment figure for outer wheel hub.

Fig. 6 is the propeller blade embodiment sectional drawing of band streamlined bilateral retaining oil groove.

Fig. 7 is the propeller blade embodiment sectional drawing of the one-sided retaining oil groove of band streamlined.

Fig. 8 is not for the screw impeller embodiment figure of outer wheel hub

Fig. 9 is applied in the scheme of installation of detachable cabinet type smoke exhaust ventilator for wind-driven oil (from cooking fume) propeller.

Figure 10 is that Figure 10 is the A-A cutaway view of Figure 11 not with the plural serial stage screw slinger embodiment of retaining oil groove.

The label title of the various embodiments described above is as follows: 1, screw impeller; 2, bilateral retaining oil groove; 3, propeller blade; 4, inner wheel hub; 5, single-stage fixed axis; 6, nut; 7, support; 8, circular outer wheel hub; 9, slinger bustle pipe; 10, multistage fixed axis; 11, screw; 12, tubaeform outer wheel hub; 13, one-sided retaining oil groove; 14, exhaust gases passes; 15, axle sleeve; 20, single step helical oar slinger; 21, the plural serial stage screw slinger of band retaining oil groove; 22, not with the plural serial stage screw slinger that keeps off oil groove; 23, the outward flange dish type support of slinger bustle pipe; 24, not with the propeller blade that keeps off oil groove.

Claims

1, a kind of wind-driven oil (from cooking fume) propeller, be contained in the exhaust gases passes, comprise the screw impeller, fixed axis, the slinger bustle pipe, it is characterized in that: described screw impeller (1) by inner wheel hub (4) and radially the propeller blade of radial (3 or 24) form, a drift angle β tilts between this propeller blade and the airflow direction, this β angle is in 3-87 degree scope, the β angle is vertical dip angle or blade less than 45 degree, the β angle is a level inclination formula blade greater than 45 degree, screw impeller periphery has a slinger bustle pipe (9), the inner wheel hub of screw impeller (4) is enclosed within on the fixed axis (5), and this fixed axis is fixed on the support (7 or 23) of slinger bustle pipe.

2, wind-driven oil (from cooking fume) propeller according to claim 1, it is characterized in that: from the cross section of propeller blade (3), on the end that the propeller blade flue gas flows out, be provided with retaining oil groove (2 or 13), the length of this retaining oil groove extends to the end of blade external diameter by the inner wheel hub place of propeller blade along blade radial always, and this retaining oil groove end is uncovered.

3, wind-driven oil (from cooking fume) propeller according to claim 2, it is characterized in that: described retaining oil groove is one-sided retaining oil groove (13) or bilateral retaining oil groove (2), the outer shape of its section is that the elliptic flow that can reduce gas-flow resistance is linear, and the oil-in of retaining oil groove is the oil-in of a slit-shaped flat.

4, wind-driven oil (from cooking fume) propeller according to claim 1 is characterized in that: described screw impeller also has the outer wheel hub (8) or the flaring outer wheel hub (12) of a circle.

5, wind-driven oil (from cooking fume) propeller according to claim 1, it is characterized in that: described wind-driven oil (from cooking fume) propeller is a plural serial stage screw slinger (21 or 22), the direction of rotation of several screw impellers of multiple coil oar slinger can all be same direction rotation, also can be to rotate and reverse the rotation of two directions intersections, one of the β drift angle that is blade is a left bank, and one is right bank.

6, wind-driven oil (from cooking fume) propeller according to claim 1 is characterized in that: on the inner wheel hub of described screw impeller rolling bearing is housed.

7, wind-driven oil (from cooking fume) propeller according to claim 1 is characterized in that: the blade of screw impeller (3 or 24) quantity is the 3-32 sheet.

8, screw slinger according to claim 1 is characterized in that: the inner wall shape of slinger bustle pipe (9) is light wall shape or corrugated or zigzag.

9, according to the described wind-driven oil (from cooking fume) propeller of claim, it is characterized in that: described screw impeller be a heatproof oil resistant be the screw impeller of the injection mo(u)lding of raw material with engineering plastics.

10, screw slinger according to claim 1 is characterized in that: the support (23) of described slinger bustle pipe (9) is the support of an outward flange dish type.