CN2542961Y

CN2542961Y - Suction-type kitchen ventilator

Info

Publication number: CN2542961Y
Application number: CN 02234311
Authority: CN
Inventors: 齐秉智
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-04-29
Filing date: 2002-04-29
Publication date: 2003-04-02
Anticipated expiration: 2012-04-29

Abstract

A lampblack absorber is provided with three function mechanisms: self exhaust, machine exhaust and flow absorption, to achieve the effect of improving the lampblack exhaust efficiency and of reducing electricity consumption and noises. Three air inlets are arranged in a shell. Two fans are respectively located on two side walls a left one and a right one of the cover and face the two air inlets on the two side walls. The central air inlet is provided with an internal pipe. The fans drive the airflow to pass a wind channel between the internal pipe and an external pipe, and join the airflow entering the central air inlet, and then cone into a wind pipe to be exhausted. When the lampblack amount is less, a majority of the lampblack can be naturally exhausted from the central air inlet. When the lampblack amount is more, self exhaust, machine exhaust and flow absorption function simultaneously after the fans are started.

Description

From the current drainage absorption type range hood

The utility model relates to a kind of smoke exhaust ventilator, a kind of row certainly, machine row and the smoke exhaust ventilator that flows suction.

The smoke exhaust ventilator that appears on the market is at present shone by hood, blower fan, airduct, Circuits System, lamp and oil collection box constitutes, its function is fully by blower fan, for improving the mist extractor rate, adopt more powerful motor (generally between 150W～250W), power of motor increases, noise strengthens thereupon, and for preventing the oil smoke diffusion, the deep hood type smoke exhaust ventilator takes up room and also increases.

The purpose of this utility model provides a kind of smoke exhaust ventilator, when oil smoke hour can discharge naturally, when oil smoke is big, machine row, stream inhale and certainly row play a role simultaneously.

The purpose of this utility model is achieved in that on an approximate rectangular hood inner casing three air inlets, two air inlets are located at two sidewalls, one in hood inner casing center of top, and two blower fans are installed in respectively on the sidewall locations relative with air inlet of casing both sides.On the central air induction mouth, adorn one flaring in comb, leave certain space between the ectonexine casing of hood top, on outer casing top and central air induction mouth relative position, a bigger opening is arranged, adorn the higher outer comb in position that a kind of and interior comb adapts on the mouth, the interface of outer comb is connected with airduct.Between the inside and outside comb is the exhaust duct of blower fan, and a diaphragm plate is respectively established in both sides before and after interior comb, and hood headroom and exhaust duct are divided into left and right two parts.Be left and right air compartment and left and right air channel.The airduct that links to each other with main frame can be a coiled tubes, also can use thinner smooth tubes, and airduct is at an outdoor row mouthful L type pipe that makes progress that connects, and row adorns a umbrella cover in a mouthful top.All press airflow design from air inlet to the Pai Kou corner, the dead angle must not be arranged, this is to reduce resistance, prevents eddy current, realizes the necessary technology condition of air-flow from row.Because the draught head of different formation of combustion gas cover and airduct row's open height, when oil smoke than hour, the machine that can not blow in, the oil smoke major part enters airduct by the central air induction mouth, discharges naturally; Behind fan starting, except that the direct suction of blower fan, the both sides air communication is crossed left and right air chamber and is pooled to the less left and right air flue of bore, and flow velocity increases, interior comb with outside formation tubulose jet between comb.Form the negative pressuren zone of a cone-shaped in interior comb upper end, according to aerodynamic principle, the negative pressure of the big more generation of its flow velocity is high more, forms " stream is inhaled " phenomenon.Make a part of oil smoke enter airduct in the lump by interior comb from central air inlet.

Owing to adopt such scheme, promptly the triple role mechanism of suction is arranged, arranged certainly and flow to machine, and suction benefit of the present utility model is obviously strengthened, and the employing of low-power blower fan reaches economize on electricity, noise reduction.The blower fan side, effectively radial line increase can reduce the casing width, and can reduce setting height(from bottom) between the hood front and rear wall, before the oil smoke diffusion it is siphoned away, and improves mist extractor efficient more.

Be described further below in conjunction with drawings and Examples:

Fig. 1 is the complete machine schematic drawing.

Fig. 2 is the profilograph (face amount) of first kind of embodiment of the present utility model.

Fig. 3 is the profilograph of second kind of embodiment.

Fig. 4 is the profilograph of the third embodiment.

Fig. 5 is the aerodynamic force schematic diagram.

Among the figure, 1. main frame (shell) 2. airduct 3.L manage comb 14. outer comb 15. left air compartment 16. right air compartments 17. left air channels 18. right air channel 19.20.21 air intake port cover 22.23. lamps photograph 24.25. oil collection box 26. diaphragm plates in the left blower fan 12. right blower fans 13. of 4. circuit operating keys, 5. umbrella covers, 6. interfaces, 7. main frame inner casings, 8. left side air inlets, 9. central air induction mouths, 10. right side air inlets 11.

Main frame in Fig. 1 (1) is connected with L pipe (outdoor) by airduct (2).

In the embodiment of Fig. 2, a nearly cuboid hood is made of shell (1) and inner casing (2), the inner casing center is central air induction mouth (9), on connect flaring in comb (13), two blower fans (11) (12) are installed on place, angle on the hood left and right sides respectively, be skewed, corresponding with left and right sides air inlet (8) (10).The body fuselage center of top is outer comb (14) and interior comb plesiomorphism, the position is higher, diaphragm plate before and after the interior comb is divided into left and right two air compartments (15) (16) with the hood headroom, and the exhaust duct between interior comb and outer comb is divided into left and right air channel (17) (18).

In the embodiments of figure 3, illustrate left and right two blower fans and be loaded on abreast respectively between the hood inside and outside shell, corresponding with the air inlet of sidewall.

In the embodiment of Fig. 4, diagram body inner casing is a continuity structure, becomes the body main casing, and the both sides blower fan places outside the main casing.

In the principle schematic of Fig. 5, black arrow is represented the airflow direction that blower fan promotes, the air-flow that is promoted by blower fan enters left and right air channel from left and right air compartment, laggard Gas inlet tube confluxes, because sectional area diminishes, flow velocity increases, and at the peripheral tubular jet that forms of interior comb, forms a cone-shaped negative pressuren zone in the tubular jet.Dotted arrow represents that air-flow is inhaled into the gravity flow situation from central air inlet.

Claims

1, a kind of smoke exhaust ventilator, constitute by hood, airduct, blower fan, lamp photograph, oil collection box and control circuit, it is characterized in that: have three air inlets at left and right sidewall of hood inner casing and top, two blower fans place respectively on the relative position of two side-inlets, connect a tubaeform interior comb on the central air induction mouth, leave certain space between the inside and outside shell in hood top, cover top portion central opening place connects an outer comb and the parallel correspondence of interior comb.

2, smoke exhaust ventilator according to claim 1 is characterized in that: before and after the comb diaphragm plate is arranged respectively in hood headroom center, the hood headroom is divided into left and right air compartment, will be divided into left and right air channel between inside and outside comb.

3, smoke exhaust ventilator according to claim 1 is characterized in that: two blower fans are inclined in the drift angle place of hood two side respectively.

4, smoke exhaust ventilator according to claim 1 is characterized in that: two blower fans are installed in parallel between the inside and outside casing of two sidewalls, and are corresponding with the air inlet of sidewall.

5, smoke exhaust ventilator according to claim 1 is characterized in that: two blower fans place on the outer sidewall of main case.

6, smoke exhaust ventilator according to claim 1 is characterized in that: at the outdoor L shaped airduct that is equipped with, an end and indoor airduct join, and other end row mouth makes progress, and a umbrella cover is adorned on top.