CN1928440A

CN1928440A - Cooking fume remover

Info

Publication number: CN1928440A
Application number: CN 200610021299
Authority: CN
Inventors: 刘晓平
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-06-30
Filing date: 2006-06-30
Publication date: 2007-03-14

Abstract

The invention relates to an oil-smoke drawing machine for cooking by air-curtain sheltering from oil and smoke. Air-curtain fan is assembled in shell of oil-smoke drawing machine, the wind generated by fan blows out in transverse direction through backswept nozzles on the left-right side of the lower at frontal face of machine cover and air-curtain is formed; and larger smoke-collecting cover is formed with the air-curtain, side wind board on the two lower sides of upper machine cover and back wall, and can accommodate more oil-smoke which is not taken out in time. Air-curtain is like as a transparent wind board. The height between collecting smoke cover and hearth surface is decreased in the pumping oil-smoke device. The distance is decreased from 0.75m to 0.45m so the distance that oil-smoke arises into collecting cavity is shortened. When pumping oil-smoke fan starts, a larger negative pressure region is formed under the collecting cover; when outer air is compensated to collecting cover, air inlet is formed under the collecting cover and makes arising oil-smoke flows into collecting cavity as outer wind, which prevents overflow of oil-smoke and improve the pump-cleaning ratio for oil-smoke.

Description

Smoke exhaust ventilator

Technical field

The present invention relates to a kind of oil smoke discharger of cooking usefulness, especially utilize air curtain to block the smoke exhaust ventilator of oil smoke.

Background technology

At present, commercially available smoke exhaust ventilator generally is divided into shallow cover type and deep hood type by the exhaust fume collecting hood volume size, and it is mainly by hood, and pump drainage oil smoke blower fan, Circuits System and smoke exhaust pipe are formed.Shallow cover type smoke exhaust ventilator is too shallow owing to exhaust fume collecting hood, the easy excessive diffusion of the oil smoke that has little time to take away, and the effect of discharging oil smoke is relatively poor.The deep hood type smoke exhaust ventilator is provided with the big slightly exhaust fume collecting hood of volume, and when the smoke pumping blower fan rotated at a high speed, the exhaust fume collecting hood top formed the certain negative pressure district, the oil smoke that the energy holding portion has little time to take away, and the effect of pump drainage oil smoke is better than shallow cover type.But in cooking process, particularly when cooking is cooked, can produce a large amount of oil smoke, because smoke exhaust ventilator exhaust fume collecting hood lower limb is bigger from the setting height(from bottom) distance of the kitchen range top in moment, generally be about about 0.75 meter, a part of oil smoke in uphill process, also do not reach suction height just to around spread.If reduce the setting height(from bottom) of smoke exhaust ventilator, can block the operation sight line again, overslaugh user's operation.

A kind of European smoke exhaust ventilator with air curtain is arranged in addition, it be near the lower limb of the hood housing front of smoke exhaust ventilator from top to bottom the kitchen range top direction of face blow out air-flow, form air curtain, be used for blocking oil smoke.But this is provided with the method that air curtain blocks oil smoke in the smoke exhaust ventilator front portion, can not stop the both sides of oil smoke below smoke exhaust ventilator to be overflowed.In addition, because the air-flow that blows out is very near from operator's head, air-flow blows to operator's head easily, the overslaugh operation.

In disclosed patent documentation, the utility model patent of 99218971.3 air curtain type fume exhaustor a kind of application number is disclosed is, this smoke exhaust ventilator be on the exhaust fume collecting hood base from top to bottom the kitchen range top direction of face blow out air curtain one, make under the exhaust fume collecting hood part of front and both sides shield us, reach the effect of blocking oil smoke by air curtain.But because the air-flow of air curtain is to blow from top to bottom, opposite with the direction of pump drainage oil smoke, the oil smoke in the rising influences the effect of pump drainage oil smoke can down being blown by the air-flow of air curtain near the air curtain place.Simultaneously, the air-flow that blows out also blows to operator's head easily.

Summary of the invention

Main purpose of the present invention provides a kind of novel culinary art smoke exhaust ventilator that has air curtain, and it can prevent the excessive diffusion of oil smoke in cooking process, improves the pumping-clean rate of oil smoke.Another object of the present invention is to avoid the air-flow of this smoke exhaust ventilator air curtain to blow to operator's head when the cooking.

The object of the present invention is achieved like this: in smoke exhaust ventilator hood housing Windscreen Fan is set, the wind that Windscreen Fan produces laterally blows out from the nozzle of the left and right sides, below, smoke exhaust ventilator hood front, forms air curtain.The screen board that keeps out the wind is set below the hood left and right sides, like this, form an exhaust fume collecting hood that volume is bigger jointly by the shelves wind screen board of air curtain, hood lower lumen and below, the left and right sides thereof and the wall of hood rear side below, it can hold more oil smoke of taking away of temporarily having little time in cooking process.The effect of air curtain is equivalent to a transparent shelves wind screen board, and it can not block the operation sight line, operation that can the overslaugh user.Adopt such device can reduce the setting height(from bottom) of exhaust fume collecting hood and kitchen range top face, be reduced to about 0.45 meter by about 0.75 meter, shortened oil smoke and risen and enter into distance in the exhaust fume collecting hood.After the smoke pumping blower fan starts, because the throughput that the throughput that the smoke pumping blower fan is extracted out blows out much larger than Windscreen Fan, just form a bigger negative pressuren zone in the exhaust fume collecting hood, when extraneous air replenishes in exhaust fume collecting hood, the exhaust fume collecting hood below just forms an air inlet, and the oil smoke in the rising is together entered in the smoke collecting chamber with outside air intake.

The air curtain nozzle tilts to the back upper place, and formed air curtain also tilts to the back upper place, blows to operator's head with the air-flow of avoiding air curtain.

The present invention has been owing to adopted such scheme, the beneficial effect that it brings to be, can effectively prevent the oil smoke that produces in the cooking process diffusion of overflowing, and improves the pumping-clean rate of oil smoke, avoids the air-flow of air curtain to blow to operator's head simultaneously.

Description of drawings

The invention will be further described below in conjunction with drawings and Examples.

Fig. 1 is a front view of the present invention;

Fig. 2 is the lateral plan of Fig. 1;

Fig. 3 is the I-I generalized section of Fig. 2;

Fig. 4 is the II-II generalized section of Fig. 1;

Fig. 5 is the III-III generalized section of Fig. 1.

Among the figure: 1. hood, 2. the Windscreen Fan air inlet, 3. the air curtain nozzle, 4. screen board, 5. Windscreen Fan, 6. air channel, 7. gap-shaped air outlet, 8. wall, 9. air curtain nozzle air-out direction signal, 10. hood lower lumen, 11. smoke pumping blower fans, the filter of 12. oil smoke nets, 13. oil extraction mouths keep out the wind in the side.

The specific embodiment

Among the embodiment as shown in the figure, Fig. 1 shows on the housing of this smoke exhaust ventilator hood 1 and has Windscreen Fan air inlet 2, and the left and right sides, below, hood 1 front is provided with air curtain nozzle 3.Fig. 2 shows the air curtain nozzle 3 and the side shelves wind screen board 4 of the side and the below, front of hood 1.

As shown in Figure 3, when Windscreen Fan 5 was started, the wind that is produced was blown in the air curtain nozzle 3 of the left and right sides, below, hood front by air channel 6, and blew out along direction shown in the arrow 9 along the gap-shaped air outlet 7 of left and right sides nozzle, formed air curtain.

In II-II generalized section shown in Figure 4, forms one jointly and enclose paravents and enclose by the keep out the wind wall 8 of formed air curtain of wind that the gap-shaped air outlet 7 of screen board 4, air curtain nozzle 3 blows out along arrow 9 and rear side of side.

As Fig. 1-shown in Figure 4, form an exhaust fume collecting hood that volume is bigger jointly by the keep out the wind wall 8 and hood 1 lower lumen 10 of screen board 4, hood 1 rear side below of the side of air curtain, below, hood 1 left and right sides, can hold more having little time the oil smoke taken away.

As shown in Figure 5, when Windscreen Fan 5 was started, the wind that is produced was blown in the air curtain nozzle 3 of below, hood front by air channel 6, and was blown out by gap-shaped air outlet 7, formed air curtain.After smoke pumping blower fan 11 started, oil smoke was discharged by oil extraction mouth 13 through oil smoke filter screen 12.

Claims

1. smoke exhaust ventilator, comprise hood (1) and be installed on hood (1) interior smoke pumping blower fan, Circuits System and smoke exhaust pipe, it is characterized in that: in hood (1), also be provided with Windscreen Fan (5), below, hood (1) front left and right sides is provided with sweptback air curtain nozzle (3), the wind that Windscreen Fan (5) is produced laterally blows out by the nozzle (3) of the left and right sides, below, hood (1) front, form air curtain, below, hood (1) left and right sides is provided with the side screen board (4) that keeps out the wind.

2. smoke exhaust ventilator as claimed in claim 1 is characterized in that the nozzle (3) of the left and right sides tilts to the back upper place, and the angle of inclination is 15 °-30 °.