CN1254640C - Jet flow type smoke exhaust ventilator - Google Patents

Abstract

The present invention discloses a jet-flow type kitchen ventilator. The present invention comprises a power machine, a power air pipe, an oil fume receiving chamber, an oil fume inlet pipe, a cylindrical mixing pipe, a diffusion pipe and an arced exhaust pipe, wherein the power machine is fixed in an installing sleeve outside of the overlay area of an oil fume collecting hood; the upper end of the power air pipe is connected with an air outlet of the installing sleeve, a jet orifice is opened at the lower end of the power air pipe, the lower end of the power air pipe extends into the oil fume receiving chamber, and the power air pipe presents a trumpet-shrunk tapered shape; the top of the oil fume receiving chamber is closed, and the lower end of the oil fume receiving chamber presents a trumpet-shrunk tapered shape; one side wall of the oil fume receiving chamber is connected with the oil fume inlet pipe; the upper end of the cylindrical mixing pipe is connected with the trumpet-shaped mouth of the oil fume receiving chamber; the upper end of the diffusion pipe is connected with cylindrical mixing pipe, and the lower end of the diffusion pipe expands like a trumpet; the upper end of the arced exhaust pipe is connected with the trumpet-shaped mouth of the diffusion pipe. The power machine, the power air pipe, the jet orifice, the oil fume receiving chamber, the cylindrical mixing pipe, the diffusion pipe and the arced exhaust pipe are connected in sequence according to the same central axis, the cross section area of the jet orifice is smaller than the cross section area of the cylindrical mixing pipe, the jet orifice is positioned close to an airflow inlet of the cylindrical mixing pipe, and the connecting port of the oil fume inlet pipe and the oil fume receiving chamber is positioned at the back end of the jet orifice. The present invention has the advantages of compact and simple structure, reliable operation, favorable oil fume removing effect, no oil dirt on.

Description

The jetting type range hood

Technical field

The present invention relates to a kind of jetting type range hood of the oil smoke that produces when removing culinary cuisine.

Background technology

The range hood of kitchen use at present and market sale all is straight-line basically, and it is that the negative pressure that relies on electric motor fan to produce is directly discharged by the air channel from kitchen range top face absorption oil smoke.The ubiquitous problem of this class range hood is to use middle motor, fan and keying valve easily to tie grease, influences the smoke exhaust result of use, and cleaning and regular maintenance are extremely not convenient, and motor knot grease also easily causes and burns out motor, influences its service life.Therefore, develop novel range hood and become pressing for of people's lives, also become an extremely active technical research field.Chinese patent 03112514.x discloses a kind of " suction type smoke exhaust ventilator " (open day on March 3rd, 2004), it is that a side at the box petticoat pipe of range hood is provided with a blower fan and fan cover thereof, the taper blower that the wind that fan blows out is installed in the blower fan cover is blown into petticoat pipe, utilize the taper blower to produce the suction effect of high velocity air, with oil smoke inspiration petticoat pipe from the oil suction cigarette hole that is provided with from the petticoat pipe below, the opposite side from petticoat pipe enters flue again.The problem that exists is, the wind that the taper blower blows out enters the petticoat pipe of a big volume immediately, and speed descends very fast, holds that to wrap up in the petticoat pipe air row very low to flue speed under the arm, in petticoat pipe, produce parital vacuum to reach suction oil smoke effect must be poor; If powerful motor is installed, will be increased energy consumption undoubtedly.Chinese patent 01140513.9 discloses a kind of " oil smoke does not touch the dual-purpose range hood of the green monomer split of external-ring jetting-flow type of electric fan " (open day on July 17th, 2002), 01140512.0 disclose a kind of " oil smoke does not touch the dual-purpose range hood of the green monomer split of central jet formula of electric fan " (open day on July 17th, 2002), they all are that jet sleeve and the jet pipe that the upper end is connected with flue is set at the lampblack-sucking cover top, difference only is that the wind that is blown out by centrifugal fan or axial-flow type electric fan produces the mode of jet, the wind of " external-ring jetting-flow type " is to spray the annular gap between the oil suction smoke pipe that jet sleeve and its center are provided with, and the oil smoke of being inhaled is sucked out from center oil suction smoke pipe; The wind of " central jet formula " is to spray from the jet pipe at jet sleeve center, and the oil smoke of being inhaled is sucked out from above-mentioned annular gap.The problem that exists is similar to " suction type smoke exhaust ventilator " patent, and high-speed jet is difficult to produce and can siphons away the necessary parital vacuum of a large amount of oil smoke, oil suction cigarette poor effect.

Summary of the invention

The present invention seeks in order to overcome the defective that above-mentioned jetting type range hood exists, provide that a kind of compact conformation is simple, production cost is low, reliable operation, effective except that oil smoke, motor does not contact oil smoke with flabellum, does not tie grease in the use, and cleaning and regular maintenance be the jetting type range hood easily.

For realizing goal of the invention, jetting type range hood of the present invention comprises engine, and it is fixed in the installing sleeve, and installing sleeve and air inlet thereof are positioned at beyond the oil-collecting petticoat pipe overlay area, and it is distinguished and admirable to installing sleeve lower end air outlet that the engine running produces; The power airduct, it is the conical pipe that is horn-like contraction, its upper end is connected with the installing sleeve air outlet that engine is installed, and its lower end that has jet is stretched in the oil smoke receiving chamber; Oil smoke receiving chamber, its top seal, lower end are horn-like contraction; The oil-feed smoke pipe, it is connected in oil smoke receiving chamber near on the sidewall of top board, and its oil-feed mouth is positioned at oil-collecting petticoat pipe overlay area; Mixing tube, it is the cylindricality long tube, its upper end is connected with oil smoke receiving chamber lower end horn mouth; Anemostat, its upper end is connected with mixing tube, the lower end is horn-like expansion; The arc-like rows tracheae, its upper end is connected with anemostat lower end horn mouth, and the other end after its curved turning leads to outdoor or connect smoke discharging pipe.Engine of the present invention, power airduct and jet thereof, oil smoke receiving chamber, mixing tube, anemostat and blast pipe upper end are linked in sequence by same central axis, and this central axis can be vertical with the top plan of oil-collecting petticoat pipe, also can be in parallel.The cross-sectional area of jet should and be positioned at air flow inlet place near the mixing tube upper end less than the cross-sectional area of mixing tube.The connector of oil-feed smoke pipe and oil smoke receiving chamber is positioned at the rear end of jet with respect to the air-flow emission direction, can make the air-flow that goes out from the jet high velocity jet siphon away oil smoke effectively.

The present invention's advantage compared with prior art is that compact conformation is simple, and production cost is low.The design science of power airduct and jet thereof, oil smoke receiving chamber and oil-feed smoke pipe thereof, mixing tube is reasonable, reliable operation, can give full play to of hold the wrap up in effect of high velocity jet air-flow to air dielectric in the oil smoke receiving chamber, form the effective swabbing action of this zone parital vacuum to oil smoke, it is effective to remove oil smoke.Engine is installed in beyond the lampblack-sucking cover overlay area, and motor and flabellum thereof do not contact oil smoke, thereby does not tie grease and exempt to clean; The oil smoke of suction can be drained from pipeline fully effectively, cleans and the regular maintenance facility.

Description of drawings

Fig. 1 is the structural principle schematic diagram of jetting type range hood of the present invention.

The specific embodiment

Below in conjunction with drawings and Examples the present invention is described in further detail.

Jetting type range hood of the present invention comprises engine 1, power airduct 2, jet 4, oil smoke receiving chamber 3, mixing tube 5, anemostat 6, blast pipe 7, oil-feed smoke pipe 8, oil-collecting petticoat pipe 9.Engine 1 is fixedly mounted in the installing sleeve, the motor of engine is towards the air inlet of installing sleeve, the fan leaf is towards the air outlet of installing sleeve, installing sleeve is positioned at beyond the overlay area of oil-collecting petticoat pipe 9, prevent that oil smoke from entering engine from its air inlet, a screen pack also is set on the air inlet, prevents that foreign material are involved in the motor by suction from the air inlet of installing sleeve, the distinguished and admirable air outlet from the installing sleeve lower end that engine 1 running produces enters power airduct 2.Power airduct 2 is for being the conical pipe of horn-like contraction, and the upper end is connected with the installing sleeve air outlet of installation engine 1, horn-like contraction have jet 4 bottom, power airduct 2 bottoms are stretched in the oil smoke receiving chamber 3.Oil smoke receiving chamber 3 is a hollow pipe, its top seal, and the lower end is horn-like contraction, and the bottom of stretching into the power airduct 2 in the oil smoke receiving chamber 3 is in the receiving chamber in the confined space.Oil-feed smoke pipe 8 is connected in oil smoke receiving chamber 3 near on the sidewall of top board, oil-feed smoke pipe 8 is preferably vertical mutually with the central axis of oil smoke receiving chamber 3, oil-feed smoke pipe 8 can be for circular or square, its oil-feed mouth is positioned at oil-collecting petticoat pipe 9 overlay areas, also be provided with netted or radial safty shield at oil-feed mouth place, its cross-sectional area should be able to guarantee to aspirate away fully the oil smoke in oil-collecting petticoat pipe 9 overlay areas, and is determined by the cross-sectional area of power, jet 4 and the mixing tube 5 of engine 1, the volume of oil smoke receiving chamber 3 or the like factor.Mixing tube 5 is a cylindricality long tube, and draw ratio is generally 3～8, and its upper end is connected with oil smoke receiving chamber 3 lower end horn mouths.Anemostat 6 upper ends are connected with the lower end of mixing tube 5, horn-like expansion in the lower end.Blast pipe 7 is a curve bend, and its upper end is connected with anemostat lower end horn mouth, and the other end leads to outdoor after arc is turned or connects smoke discharging pipe.In order to make range hood easy to install, blast pipe 7 preferably adopts the flexible connection that blast pipe 7 is rotated to an angle with being connected of anemostat 6, connect such as flange, be threaded, like this, just can make oil-containing flue gas body discharge line become vertical direction to pass with the kitchen range top, oil smoke is discharged the kitchen from the kitchen wall of kitchen range top back, become with the kitchen range top parallel direction from kitchen range top left or right-hand kitchen wall pass, oil smoke is discharged the kitchen.The upper end that engine 1 of the present invention, power airduct 2 and jet 4 thereof, oil smoke receiving chamber 3, mixing tube 5, anemostat 6 and blast pipe 7 are connected with anemostat 6 is linked in sequence by same central axis, this central axis can vertical with the top plan of oil-collecting petticoat pipe (as shown in Figure 1), also can be in parallel.The cross-sectional area of jet 4 should be less than the cross-sectional area of mixing tube 5, and in general, mixing tube 5 is 3～6 with the cross-sectional area ratio of jet 4.Jet 4 should be arranged in the air flow inlet place near mixing tube 5 upper ends.The connector of oil-feed smoke pipe 8 and oil smoke receiving chamber 3 should be arranged in the rear end of jet 4, and this " rear end " like this, just can make the air-flow that goes out from the jet high velocity jet siphon away oil smoke effectively for the air-flow emission direction is " preceding ".

Principle of the invention process and process are: the power wind (also can use compressed air) that engine 1 produces forms energy accumulating through taper power airduct 2, from jet 4 ejection at a high speed, and hold under the arm and wrap up in the air dielectric of taking away jet 4 near zones in the oil smoke receiving chamber 3, make oil smoke receiving chamber 3 and oil-feed smoke pipe 8 zones form local relative vacuum, under this pull of vacuum effect, the oil smoke that comes together in oil-collecting petticoat pipe 9 zones constantly is sucked into oil smoke receiving chamber 3 through oil-feed smoke pipe 8, side by side to mixing tube 5, oil smoke fully mixes in mixing tube 5 with power wind, speed can convert the pressure energy to, when its pressure during greater than external atmospheric pressure, the mist that contains oil smoke just outwards discharges through anemostat 6 and blast pipe 7, thereby reaches the purpose that effectively extracts oil smoke.

Claims (1)

1. jetting type range hood is characterized in that it comprises: engine (1), it is fixed in the installing sleeve beyond oil-collecting petticoat pipe (9) overlay area, and its running produce distinguished and admirable to installing sleeve lower end air outlet; The taper power airduct (2) that is horn-like contraction, its upper end is connected with the installing sleeve lower end air outlet that engine is installed, and its lower end that has jet (4) is stretched in the oil smoke receiving chamber (3); Top seal, lower end are the oil smoke receiving chamber (3) of horn-like contraction, and oil smoke receiving chamber (3) sidewall is connected with the oil-feed smoke pipe (8) that its oil-feed mouth is positioned at oil-collecting petticoat pipe (9) overlay area; Cylindricality mixing tube (5), its upper end is connected with oil smoke receiving chamber (3) lower end horn mouth; The lower end is the anemostat (6) of horn-like expansion, and its upper end is connected with mixing tube (5); Arc-like rows tracheae (7), its upper end is connected with anemostat (6) lower end horn mouth; Engine (1), power airduct (2) and jet (4) thereof, oil smoke receiving chamber (3), mixing tube (5), anemostat (6) and blast pipe (7) upper end are linked in sequence by same central axis, the cross-sectional area of jet (4) is less than the cross-sectional area of mixing tube (5) and be positioned at air flow inlet place near mixing tube (5) upper end, and oil-feed smoke pipe (8) is positioned at the rear end of jet (4) with respect to the air-flow emission direction with the connector of oil smoke receiving chamber (3).