CN2292241Y - Blow-suction type fume exhauster - Google Patents

Abstract

The utility model relates to a blowing-suction type fume exhauster which relates to a fume device for a family in a kitchen. The utility model is characterized in that the periphery of an air suction opening of the existing fume exhauster is additionally provided with a ring-shaped air outlet and a blower connected with the air outlet. The utility model aims at using blowing to make a rotary flow field formed in an area between the air suction opening of the fume exhauster and a range opening to form obvious negative pressure. Accordingly, the utility model overcomes the defects of big noise, high energy consumption, large air rate, etc. of a traditional fume exhauster and also effectively overcomes the problems that fume rises only depending on self uplift and cross flow disturbs the rise of the fume, and consequently, an ideal fume exhaust effect is achieved.

Description

The blowing and drawing type smoke exhaust

The utility model relates to the mist extractor equipment that a kind of family kitchen is used.

The various types of smoke exhausts that use in the prior art all are to realize mist extractor by the air draught mode; Generally be an inlet scoop to be set at the square about 600～800mm of kitchen range mouth place.Since the wind speed that causes of air draught at kitchen range mouth place be inversely proportional to inlet scoop and kitchen range mouth distance H square, experimental results show that: when H=600～800mm, this wind speed is less than the diffusion velocity of oil smoke, thereby the rising of kitchen range mouth place oil smoke is not to rely on the air draught effect but the hot buoyancy lift that relies on himself, have only when oil smoke to rise to from the air port (in 200～300mm) when nearer by hot buoyancy lift, the influence of air draught just plays a major role.

Ideally, if the exhaust air rate of inlet scoop equals the flow of thermojet on the section of air port (oil smoke), cross dimensions equals the size of thermojet on the section of air port, and thermojet just can all be got rid of.But in fact owing to cross-flow influence, thermojet will deflect, and it finally can't be sucked.The setting height(from bottom) H of inlet scoop is big more, and cross-flow influence is serious more, in addition the temperature of oil smoke is not high sometimes.For above-mentioned reasons, such smoke exhaust mist extractor poor effect.

In order to solve the problem of mist extractor weak effect, some oil soot exhaustors that use in the prior art have to strengthen the area of suction air volume and inlet scoop, add a big exhaust hood in the outside of original inlet scoop, though the mist extractor effect increases like this, it is heavy but this smoke exhaust is big, energy consumption height not only, noise is big, and can not fundamentally solve the unfavorable problem of mist extractor effect.

The purpose of this utility model and task are at the deficiencies in the prior art and defective, and a kind of blowing and drawing type smoke exhaust is provided, and make its situation that fundamentally changes existing smoke exhaust, thereby realize little air quantity, low energy consumption, noise is little and mist extractor is effective.

The purpose of this utility model and task are achieved through the following technical solutions, it mainly comprises inlet scoop and interior induced-draught fan, oil smoke separation equipment, mist extractor flexible pipe and smoke exhaust casing etc. thereof, it is characterized in that a hair-dryer installing an air outlet additional and link to each other in the periphery of inlet scoop, the mist extractor mode that promptly adopts air draught and air-supply to combine with this air outlet.Set up this two parts, its objective is by hair-dryer air is sent into air outlet with bigger tangential velocity, make the inlet scoop of smoke exhaust and the vortex field that the zone between the kitchen range mouth forms similar tornado, the central area of field is a negative pressure.Experiment shows, just can form comparatively significantly negative pressure at kitchen range mouth place with less blowing amount, and the mist extractor effect is clearly better.

Description of drawings:

Accompanying drawing 1 is a structural principle schematic diagram of the present utility model.

Accompanying drawing 2 is the structural representation of annular air supply mouth.

Accompanying drawing 3 is for installing the structural representation of an air outlet additional in the periphery of inlet scoop.

Among the figure: the blast pipe 2-hair-dryer 3-air outlet 4-induced-draught fan 5-inlet scoop 6-guide vane 7-oil smoke separation equipment 8-mist extractor flexible pipe 9-smoke exhaust casing of 1-hair-dryer.

Describe operation principle of the present utility model in detail below in conjunction with accompanying drawing, concrete structure and most preferred embodiment:

The utility model mainly comprises inlet scoop 5 and interior induced-draught fan 4 thereof, oil smoke separation equipment 7, mist extractor flexible pipe 8, smoke exhaust casing 7, air outlet 3 and the hair-dryer 2 that links to each other with this air outlet.Hair-dryer 2 can be sent into air outlet 3 with bigger tangential velocity with the air from hair-dryer blast pipe 1.Air outlet 3 is located at the periphery of inlet scoop, ringwise.In order to add the tangential velocity of air blast, a plurality of guide vanes 6 also can be set in the exit of annular air supply 3.The shape of this guide vane can adopt helicoid or other similar shape.This annular air supply mouth is set, can makes the inlet scoop of smoke exhaust and the vortex field that the zone between the kitchen range mouth forms similar tornado, the central area of field is a negative pressure.Experiment shows, just can between inlet scoop and kitchen range mouth, form comparatively significantly negative pressure with less blowing amount, like this, the oil smoke of emerging from the kitchen range mouth will rise under the suction function that blowing causes blow, near the inlet scoop, under the acting in conjunction of blowing and air draught, enter the inlet scoop again, at last under the effect of air draught after the oil smoke separation equipment separates, be discharged to outdoor through mist extractor flexible pipe 8.

The utility model compared with prior art has the following advantages and beneficial effect:

The utility model send owing to installing an annular additional in the periphery, inlet scoop of original smoke exhaust Air port and the hair-dryer that links to each other therewith, so available littler air quantity is in the air draught of smoke exhaust Zone between mouth and the kitchen range mouth forms negative pressure, only leans on the heat of self thereby effectively overcome oil smoke The perturbed problem that buoyancy lift rises and crossflow rises to oil smoke, thereby not only have noise The advantages such as little, energy consumption is low, and air quantity is little, and reached desirable mist extractor effect. A kind of Having little air quantity, low energy consumption, noise novel mist extractor little, mist extractor efficient high establishes Standby.

Claims (3)

1, a kind of blowing and drawing type smoke exhaust, mainly form, it is characterized in that the hair-dryer [2] that the periphery of in the inlet scoop [5] installs an air outlet [3] additional and links to each other with this air outlet by inlet scoop [5] and within it induced-draught fan [4], oil smoke separation equipment [7], mist extractor flexible pipe [8] and smoke exhaust casing [9] etc. of dress.

2, blowing and drawing type smoke exhaust according to claim 1 is characterized in that above-mentioned air outlet is an energy is sent into air with tangential velocity an annular air supply mouth.

3, want 2 described blowing and drawing type smoke exhausts according to right, it is characterized in that being provided with guide vane [6] in the exit of annular air supply mouth.

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