CN100485270C

CN100485270C - Air curtain type fume exhaustor

Info

Publication number: CN100485270C
Application number: CNB200610081225XA
Authority: CN
Inventors: 王绍祥
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-05-26
Filing date: 2006-05-26
Publication date: 2009-05-06
Anticipated expiration: 2026-05-26
Also published as: CN1862110A

Abstract

There is disclosed an air curtain cooking fume remover, in which, an air-cooled fume-removing hood is set at the lower edge opening of the casing. The hood wall consists of inner and outer two layers, the inner layer cavity being downward extended part of a fume-discharging flue, on the top between the inner and outer layers being a main air duct and on their side periphery being several air curtain runners. When cooking, a blowing fan delivers the low-temp. air into the air curtain runners to make the air-cooled fume-removing hood work safely. The air curtain at the lower edge can effectively prevent all kinds of harmful gases on the range top from diffusing.

Description

Air curtain type fume exhaustor

Technical field the present invention relates to a kind of equipment that kitchen flue gas pollutes of removing, and especially is installed in the smoke exhaust ventilator of cooking stove top.

Background technology shows according to relevant investigation, air pollution degree in some dwelling houses, than outdoor serious manyfold, its primary pollution source is from the kitchen, and the pollutant in kitchen: the one, the oil smoke that produces during the cooking, it is a kind of irritating pernicious gas that has, the 2nd, the pernicious gas of the multiple nitrogen oxide that the fuel gas buring process of cooking stove produces because it cannot see, smell less than, so its harmfulness is much larger than oil smoke, and continue the whole kitchen range process of cooking a meal.

Various types of smoke exhaust ventilators of updraft type mostly are equipped with in current household kitchen above cooking stove, according to the regulation of product safety, its installation site is higher, and the limitation of himself configuration aspects makes its suction efficient very undesirable in addition.

Owing to the oil smoke that in frying pan, sharply wafts and rise, part oil smoke has wherein exceeded the control range of smoke exhaust ventilator and has flown away, and especially gas-cooker is being lighted a fire, the flame-out a large amount of pernicious gases that produced with combustion process, fly away along the pot limit outside, smoke exhaust ventilator control especially less than and let alone diffusion.

A kind of air curtain type fume exhaustor is disclosed at Chinese patent CN2421562Y, it is that a motor vertically is set on plate Beam, stretch at its twin shaft and to install forward fan and reverse fan respectively, constitute an exhaust system and a supply air system, can be in smoke evacuation at body lower edge periphery, form a downward air curtain, in the hope of improving suction efficient.

The such scheme weak point is: this air curtain extends limited downwards, though can play some effects to the control oil smoke, but control is less than the pernicious gas that flies away from the outside, pot limit, make it continue to pollute the kitchen, and involve domestic environment, if make this air curtain that bigger downward extension be arranged, just need to increase the power of its equipment, this has not only increased energy consumption, and noise also can increase thereupon.

Summary of the invention the objective of the invention is in order to overcome the weak point of above-mentioned background technology, and provide a kind of new air curtain type fume exhaustor, its air curtain can drop to can control oil smoke, also can control pot various pernicious gases in the outside, limit, not excessive and clean by suction.

For achieving the above object, the technical solution that the present invention adopts is: at the lower edge opening part of common fume exhaust structure, an air-cooled enclosure is set again, become the extension of discharge flue, the cover wall of this cover is by interior, outer two-layer composition, on the sidewall wall between internal layer and the skin, be provided with a rule air curtain runner, pass to the Cryogenic air that comprises normal temperature to it, make the temperature rise of this air curtain runner periphery wall, keep in its limit of temperature rise when safe altitude, thereby make this cover can be in the work of safe altitude lower position, the air curtain of its lower edge also drops to corresponding position with it.

The present invention compares with background technology, its good effect is conspicuous, because the downward extension of air-cooled enclosure position, the air curtain of its lower edge need not increase any power, just can be with reaching corresponding position under it, and the various pernicious gases in the outside, pot limit are controlled, make it not excessive and clean by suction, thereby not only purified the kitchen, also improved domestic environment.

Also because of air-cooled enclosure itself, the barrier of being formed around the positive pressure zone of shape of air curtain and air curtain effect terminal has effectively stoped pouring in of extraneous air, can save a large amount of exhaust air rates, thereby the shaft power of its smoke exhaust ventilator also can significantly reduce, and noise also can descend accordingly.

Description of drawings Fig. 1 is the structural representation of an embodiment of air curtain type fume exhaustor of the present invention.

Fig. 2 installs and its work schematic diagram for this embodiment's.

The specific embodiment is in structural representation shown in Figure 1, air curtain type fume exhaustor of the present invention has a casing 1, and motor 5 is installed on the roof of casing 1, blowing fan 3 be arranged on casing 1 roof above, and roof below ventilating fan 2 is set, being concentrated by motor 5 provides power, also can split motor, power is provided separately, the smoking port place, wind chamber of ventilating fan 2 is provided with oil cleaner screen and lubricating cup 7 thereof, and the shell wall of casing 1 is outer to be connected with smoke exhaust pipe 6 and its outlet stretches out.

Air-cooled enclosure 14 is fixed on casing 1 lower edge opening part by spiral shell lamp 8, the cover wall of this cover is by interior, outer two-layer composition, the upper shed of internal layer 10 is corresponding with casing 1 lower edge opening, and its under shed is the uncovered of discharge flue, when its when the wall be on one side three faces enclose uncovered, during not by wall for the four sides enclose uncovered.

Top between internal layer 10 and outer 11 is a main air duct 9, and gusset arranged side by side 13 vertically is set on its sidewall wall, between the gusset and between the wall that combines with it, constitutes a rule air curtain runner 12 of large tracts of land heat exchange structure jointly.

At the air inlet place of outer 11 roofs, connect air supplying hose 15, this air supplying hose other end is connected on the air outlet of blowing fan 3, is provided with heat insulation backing plate 4 between blowing fan 3 and casing 1 roof, to cut off the heat exchange between them.

Embodiment as shown in Figure 2 installing and working, and is the composition surface with casing 1 lower edge and air-cooled enclosure 14, places on the horizontal line of safe altitude 16 of defined, makes air-cooled enclosure 14, position work thereunder.

When kitchen range was cooked a meal, the flue gas on the kitchen range top was by air-cooled enclosure 14, be discharged from outdoorly through smoke exhaust pipe 6 by ventilating fan 2, simultaneously blowing fan 3 will comprise the Cryogenic air of normal temperature, through air supplying hose 15 and main air duct 9, be defeated by air curtain runner 12, cover the temperature rise of wall in the scope of safety with control.

From in essence, it is the Cryogenic air that comprises normal temperature that flows in the air curtain runner 12, constitute a cooling source, the heat that it constantly passes to wall it is taken away and is sprayed, cover wall because when the safe altitude lower position is worked with conversion, the heat of accepting to increase, lower edge position that thus should the cover wall is to be on the horizontal plane 17 of equivalent temperature rise position of safe altitude.

Periphery by air-cooled enclosure 14 lower edges, the air of ejection has constituted downward air curtain 20, this air curtain has not only formed the coverage rate of large-area control flue gas, and the effect terminal of this air curtain, also its peripheral gas is formed the positive pressure zone 18 around shape, can stop flue gas on the kitchen range top to external diffusion, and it is clean by suction, simultaneously also because the air curtain 20 of air-cooled enclosure 14 itself and its lower edge, and the barrier formed of the positive pressure zone 18 of air curtain terminal, all stop pouring in of extraneous air 19, thereby significantly saved the exhaust air rate of ventilating fan 2.

The internal layer 10 and outer 11 of air-cooled in addition enclosure 14 cover walls be by heat transfer property preferably material make.

Air curtain type fume exhaustor of the present invention not only is fit to kitchen range rooms such as vast family, hotel, restaurant and uses, and also can be used for the occasion that units such as industrial and mineral, scientific research purify in order to local air.

Claims

1, a kind of air curtain type fume exhaustor, comprise casing (1), motor (5), blowing fan (3) and ventilating fan (2), it is characterized in that: also have an air-cooled enclosure (14), be installed in casing (1) lower edge opening part, its cover wall is by interior, outer two-layer composition, on the sidewall between internal layer (10) and outer (11), be provided with a rule air curtain runner (12) that passes to normal temperature air, make the temperature rise of this runner periphery wall, in the limit of temperature rise when remaining on safe altitude, thereby make this cover can be in the lower position work of safe altitude, the air curtain of its lower edge (20) also drops to corresponding position thereupon.

2, air curtain type fume exhaustor according to claim 1, it is characterized in that: on the sidewall wall between internal layer and the skin, gusset is set, between the gusset and with wall that gusset combines between, constituted described air curtain runner jointly, and the material of gusset is identical with the wall surface material that combines with gusset.