CN2811799Y

CN2811799Y - Smoke exhaust ventilator

Info

Publication number: CN2811799Y
Application number: CN 200520033958
Authority: CN
Inventors: 刘晓平
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-04-22
Filing date: 2005-04-22
Publication date: 2006-08-30
Anticipated expiration: 2015-04-22

Abstract

The utility model relates to a cooking fume exhauster, which uses an air curtain to block oil fume. An air curtain fan is arranged in a shell of the fume exhauster, wind generated by the fan is transversely blown out through to slot-shaped spraying nozzles which are arranged on the left and the right sides of the front lower part of an upper machine hood and are backwards slanted to form an air curtain, the air curtain, wind blocking screen boards which are downward extended to both sides of the upper machine hood, and a back wall form a fume collecting hood with bigger capacity, and more oil fume which does not have time to be exhausted can be accommodated. The function of the air curtain is equivalent to a transparent wind blocking screen board. The utility model can reduce the height of a fume collecting hood and a range surface from about 0.75 m to about 0.45 m. The rising distance of the oil fume to entering a fume collecting cavity is shortened. When the fume exhauster is started, a large negative pressure zone is formed in the fume collecting hood. When outer air is replenished to the fume collecting hood, a wind inlet is formed below the fume collecting hood. Thus, the rising oil fume enters a fume collecting cavity with the outer air inlet, the overflow and the diffusion of the oil fume is prevented, and the exhausting rate of the oil fume is raised.

Description

Smoke exhaust ventilator

Technical field

The utility model relates to a kind of culinary oil smoke discharger, especially utilizes air curtain to block the smoke exhaust ventilator of oil smoke.

Background technology

At present, existing 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 be provided with volume big slightly exhaust fume collecting hood, when the smoke pumping blower fan rotated at a high speed, exhaust fume collecting hood top formed the certain negative pressure district, the oil smoke that can holding portion has little time to take away, the effect of pump drainage oil smoke is better than shallow cover type.But in gastronomical process, particularly when cooking, oil smoke produces for the instantaneous explosion type, because smoke exhaust ventilator exhaust fume collecting hood lower limb is bigger from the setting height(from bottom) distance of the kitchen range top, 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.Under the identical situation of technical conditions, the oil smoke of shallow cover type smoke exhaust ventilator is taken out most rate and is about 40%, and the oil smoke of deep hood type smoke exhaust ventilator is taken out most rate and is about 50%-60%, still has the fume pollution indoor environment of 40%-50% in gastronomical process.

Other has a kind of smoke exhaust ventilator with air curtain, it be near the casing lower limb of the both sides of smoke exhaust ventilator and front from top to bottom the kitchen range top direction of face blow out air-flow, form air curtain, but the oil smoke near air-flow is down dispelled easily, since the airflow direction of air curtain during with the cooking oil smoke direction of rising opposite, also can influence the effect of pump drainage oil smoke.The air-flow that blows out simultaneously blows to cooking person's head easily, the overslaugh operation.

Summary of the invention

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

The purpose of this utility model is achieved in that in smoke exhaust ventilator hood housing Windscreen Fan is set that the wind that Windscreen Fan produces laterally blows out from the nozzle of the left and right sides, below, hood front, top, forms air curtain.The screen board that keeps out the wind is set below the hood left and right sides, top, like this, forms an exhaust fume collecting hood that volume is bigger by the shelves wind screen board of air curtain, top hood and below, the left and right sides thereof and the wall of top hood rear side below, it can hold the more oil smoke taken away of temporarily having little time in gastronomical 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 height of exhaust fume collecting hood and kitchen range top face, be reduced to about 0.45 meter by about 0.75 meter.Shortened the distance that oil smoke rises and enters smoke collecting chamber.After the smoke pumping blower fan starts, form a bigger negative pressuren zone in the exhaust fume collecting hood, when extraneous air when exhaust fume collecting hood replenishes, 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 utility model can effectively prevent the excessive diffusion of oil smoke in the gastronomical process owing to adopted such scheme, the beneficial effect that it brings to be, improves the most rate of taking out of oil smoke.Avoid the air-flow of air curtain to blow on operator's the head simultaneously.

Description of drawings

The utility model is described in further detail below in conjunction with drawings and Examples.

Fig. 1 is the front view of the utility model smoke exhaust ventilator;

The lateral plan of Fig. 2 Fig. 1;

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

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

Among the figure: 1. the top hood, 2. the Windscreen Fan air inlet, 3. the air curtain nozzle body, 4. stretch side deep bead, 5. Windscreen Fan, 6. air channel, 7. gap-shaped nozzle, 8. wall, 9. air curtain nozzle air-out direction signal down.

The specific embodiment

Among the embodiment as shown in the figure, Fig. 1 shows in the housing of this smoke exhaust ventilator top hood 1 and has Windscreen Fan air inlet 2, the air curtain nozzle body 3 of the left and right sides, below, top hood 1 front.Fig. 2 show the side top hood 1 below air curtain nozzle body 3 and under stretch side barge board 4.As shown in Figure 3, when Windscreen Fan 5 was started, the wind that is produced was blown in the nozzle body 3 of the left and right sides, below, hood front, top by air channel 6, and was blown out along direction shown in the arrow 9 by the gap-shaped nozzle 7 of the left and right sides, formed air curtain.As Fig. 1-shown in Figure 4, form an exhaust fume collecting hood that volume is bigger by the wall 8 of the keep out the wind screen board 4 and the rear side below of stretching under air curtain, top hood 1 and the left and right sides thereof, can hold more having little time the oil smoke taken away.

Should be pointed out that if the wall of top hood rear side below change into the top hood and the left and right sides thereof under stretch the barge board that the screen board that keeps out the wind links to each other, its effect is the same, does not run counter to principle of the present utility model, also belongs to this practicality novel protected scope newly.This is conspicuous for those skilled in the art.

Claims

1. smoke exhaust ventilator, comprise top hood housing and be installed on the interior smoke pumping blower fan of housing, it is characterized in that: in the hood of top, also be provided with Windscreen Fan, the left and right sides, below, hood front, top is provided with sweptback air curtain nozzle, the wind that Windscreen Fan produced laterally blows out by the nozzle of the left and right sides, below, hood front, top, the left and right sides is provided with the screen board that keeps out the wind below the formation air curtain, top hood.

2. smoke exhaust ventilator as claimed in claim 1, the nozzle that it is characterized in that the left and right sides is the gap-shaped nozzle.

3. smoke exhaust ventilator as claimed in claim 1 or 2 is characterized in that the gap-shaped nozzle of the left and right sides tilts to the back upper place, and the angle of inclination is 15 °-25 °.

4. smoke exhaust ventilator as claimed in claim 1 is characterized in that the screen board that keeps out the wind of the left and right sides is a clear glass.