CN2557840Y

CN2557840Y - Cooking fume flow guiding cover for exhauster

Info

Publication number: CN2557840Y
Application number: CN 02233647
Authority: CN
Inventors: 陈灵峰
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-05-21
Filing date: 2002-05-21
Publication date: 2003-06-25
Anticipated expiration: 2012-05-21

Abstract

Disclosed is a fuel gas dome which is additionally arranged at the entrance of a well-known household cooker range hood. The utility model is characterized in that a spiral gas inlet with the upper part smaller than the lower part is axially arranged; an inner flow guide column on which spiral vanes are evenly arranged is arranged inside the fuel gas dome; the spiral gas inlet and the inner flow guide column together form a spiral tridimensional gas channel. When the cooker range hood is in work, the fuel gas dome makes the pressure difference area at the entrance of the cooker range hood expand downwards. Under the effects of the pressure difference, the heat energy and the air rotating into the fuel gas dome, a spiral lifting air flow is formed, taking the center line of the fuel gas dome as the axis; hot fume and gas are enclosed at the central area of the air flow and rotate into the fuel gas dome with quicker speed than the lifting speed of the cool air and are then absorbed and discharged by the cooker range hood. No rearrangement to the cooker range hood is needed; the fuel gas dome enables the air flow to rotate, remarkably stopping the clean cool air from entering to mix with the fume and gas and diffusing to the outside, playing a role of ensuring the main function of discharging fume and gas of the cooker range hood and furthermore effectively increasing the discharge amount of the fume and gas.

Description

The flue gas kuppe of kitchen hood

The utility model relates to a kind of device of effective enhancing kitchen hood effect, and the oil smoke gas that especially can make the cooking stove generation rotates into the flue gas kuppe of kitchen hood with the rate of climb faster than cold air.

At present, known home-use all kinds of kitchen hood structures are to be made of lampblack absorber cover body, flue gas turbine inlet safety decoration website, impeller, motor, cigarette machine spiral case, outlet check baffle plate, outlet smoke evacuation flexible pipe, automatically controlled annex.Operation principle is: driven by motor kitchen hood impeller rotation, and above cooking stove, the impeller eye place forms negative pressuren zone, the deep fat flue gas that cooking stove produces rises under the differential pressure effect between heat energy and atmospheric area and the negative pressuren zone, affects near the cold air it simultaneously; Cold air will be filled up the space that stays after the deep fat flue gas rises, and the deep fat flue gas interacts into turbulent and produces a large amount of mists with cold air in uphill process like this.What the kitchen hood suction was fallen is exactly this gas.Known home-use kitchen hood, aspect the effect of suction mist, the solution of employing has following deficiency:

1. improve the suction gaseous mixture scale of construction with strengthening the kitchen hood power of motor, cost is to increase power consumption.

2. with the position of kitchen hood inlet, be designed to close quarters near oil smoke gas, adopt bigger dark cover, movable shape hood in order to reduce the amount that forms mist, the overall dimensions of kitchen hood are big, occupied near the limited space of cooking stove like this, make troubles to use, the effect promoting of suction oil gas is not obvious.

3. take round-about way fume exhaust gas, under the prerequisite that does not change the kitchen hood power of motor, calculate by known law of conservation of energy, the ability of indirect type kitchen hood fume exhaust gas is quite direct half of suction-discharge type kitchen hood only.

For overcoming the deficiency of above-mentioned home-use kitchen hood, the utility model provides a kind of flue gas kuppe that is attached on the kitchen hood, and it does not do any change to kitchen hood, can increase the ability that kitchen hood is got rid of oil significantly.

The technical scheme that its technical problem that solves the utility model adopts is: the inlet at existing all kinds of home-use kitchen hoods is installed a kuppe, and diversion column is installed in the kuppe, is equipped with an oil collection box under the kuppe.Kuppe leaves vertically and is shaped on up-small and down-big spiral helicine air intake, kuppe and being installed between the diversion column that its inside has uniform blade, the common gas passage that constitutes up big and down small spiral helicine solid, its effect is the gas that makes the helical duct between kuppe and the diversion column of flowing through, and enters the kitchen hood impeller with certain helical angle.The effect of the spiral helicine air intake of kuppe is, makes the gas bottom, the central area that enter kuppe many, and top, outer peripheral areas are few.During kitchen hood work, kuppe, diversion column, oil collection box have occupied the space of former porch negative pressuren zone jointly, make negative pressuren zone pass diversion column, kuppe certain zone in addition downwards, have enlarged the active region of pressure reduction.Gas in this zone rotates into kuppe and is fallen by the kitchen hood suction along the tangential direction of kuppe.The gas of kuppe below, at differential pressure, heat energy with enter under the curbing function of kuppe gas, forming with the kuppe center is the spiralling air-flow of axis.In the air-flow of motion, because the difference of the mass density of gas, the deep fat flue gas is surrounded by cold air, and is contracted in the interior curvilinear central area of approximate Double of spiral ascending air, with the rate of climb, rotate into kuppe and fallen by the kitchen hood suction faster than cold air.The common rotation of hot and cold air-flow, between kitchen hood and cooking stove, form metastable swirling eddy, the negative pressuren zone of kuppe bottom is further extended downwards, at the continuous deep fat flue gas that produces of atmospheric area, the effect of pressure difference, accumulate in the central area rapidly and rising, and then repeat aforesaid motion process.Kuppe is under the constant prerequisite of the total amount of kitchen hood suction gas, impel the air-flow rotation, played based on fume exhaust gas, the cold air that restriction is clean and the combined amount of oil smoke gas and the amount that enters kitchen hood, greatly reduce the diffusing capacity of oil smoke gas, finally realized the raising of oil smoke gas clearance.

The beneficial effects of the utility model are, existing kitchen hood are not done any change, with simple implementation method, have realized making the remarkable enhancing of kitchen hood ability, limit the diffusing capacity of soot gas effectively and improve its clearance.

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is installed in the flue gas kuppe front view of suction inlet kitchen hood downward vertically

Fig. 2 is installed in the flue gas kuppe front view of the kitchen hood of suction inlet level

Fig. 3 has the flue gas kuppe assembling plan view of spiral stator

1. kitchen hoods among the figure, 2. diversion column, 3. kuppe, 4. oil collection box, 5. diversion column extension body, 6. kuppe extension body.

Embodiment 1

In Fig. 1, be vertically downward kitchen hood (1) by suction inlet, diversion column (2), kuppe (3), oil collection box (4) constitutes.Kuppe (3) is installed in kitchen hood (1) smoke inlet place, and is communicated with at kitchen hood (1) inlet.Diversion column (2) with helical blade is installed in the kuppe (3), and oil collection box (4) is installed in kuppe (3) bottom.To having up-small and down-big spiral helicine opening, its effect is to make the gas that enters kuppe interior how outer few, goes up few down more along kuppe (3) cone axis.The top of diversion column (2) sealing is near the impeller of kitchen hood (1), axially be evenly equipped with helical blade along diversion column (2), its effect is that constraint enters the gas in the kuppe (3), can only move to the inlet of kitchen hood (1) impeller along the predetermined angular of diversion column (2) helical blade and fallen by kitchen hood (1) suction, kuppe (3), diversion column (2), oil collection box (4) has occupied the negative pressuren zone at kitchen hood (1) impeller eye place, thereby negative pressuren zone is passed diversion column (2), kuppe (3) bottom oil smoke gas accumulation regions has in addition consequently enlarged the zone of differential pressure effect.During use, be positioned at the gas of the close kuppe (3) of the outer negative pressuren zone of kuppe (3), rotate into kuppe (3) when being fallen along kuppe (3) tangential direction, affect the interior gas of negative pressuren zone to move together, form the air-flow of the rising of stable rotation away from kuppe (3) by suction.Under the effect of pressure reduction and heat energy, the deep fat flue gas in extremely rapid succession is inhaled in the interior curvilinear central area of approximate Double of swirling eddy, enters kuppe (3) with the rate of climb faster than cold air and is fallen by kitchen hood (1) suction; The rotation of air-flow is further extended flow-differential zone downwards simultaneously in the central area.

The utility model in use at first enters the oil smoke gas microparticle in the kuppe (3), enter kitchen hood (1) before with diversion column (2) bump, degradedness is gathered into the oil droplet deposition and falls, and is pooled in the oil collection box (4) below the kuppe (3).

Embodiment 2

In Fig. 2, be the kitchen hood (1) of level by suction inlet, diversion column (2), kuppe (3), oil collection box (4), diversion column extension body (5), kuppe extension body (6) constitutes.Diversion column (2) links to each other with diversion column extension body (5) and is installed in the kuppe (3); Kuppe (3) links to each other with kuppe extension body (6), is installed in kitchen hood (1) smoke inlet place, and is communicated with at kitchen hood (1) inlet; Oil collection box (4) is installed in kuppe (3) bottom; Kuppe extension body (6) is a thin-walled elbow.For adapting to suction inlet is the kitchen hood (1) of level, diversion column (2), kuppe (3), links to each other with kitchen hood (1) indirectly by diversion column extension body (5), kuppe extension body (6).

Present embodiment in use, the action principle of diversion column (2), kuppe (3), oil collection box (4) is consistent with embodiment 1.

Claims

1. flue gas kuppe that is attached on the kitchen hood (1), it comprises diversion column (2), kuppe (3), oil collection box (4), diversion column extension body (5), kuppe extension body (6) is characterized in that diversion column (2) is installed in the kuppe (3), and oil collection box (4) is installed in kuppe (3) bottom.

2. flue gas kuppe according to claim 1 is characterized in that kuppe (3) and flue gas suction inlet are connected for the flue gas suction inlet of vertically downward kitchen hood (1).

3. flue gas kuppe according to claim 1 is characterized in that kuppe (3) by kuppe extension body (6), is that the flue gas suction inlet of the kitchen hood (1) of level is connected with the flue gas suction inlet, and diversion column (2) is connected with diversion column extension body (5).

4. flue gas kuppe according to claim 1, it is characterized in that kuppe (3) is along the big opening of going up the minor spiral shape of axially having down of cone, diversion column (2) to being evenly equipped with helical blade, jointly constitutes up big and down small helical channel with kuppe (3) at cylinder axis.