CN2144264Y

CN2144264Y - Fume extractor with ejector

Info

Publication number: CN2144264Y
Application number: CN 92233309
Authority: CN
Inventors: 蔡先培; 蔡宁培; 蔡明�
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-09-17
Filing date: 1992-09-17
Publication date: 1993-10-20
Anticipated expiration: 2002-09-17

Abstract

The utility model relates to a fume extractor with an ejector device. The ejector device is composed of two cone pipe sections and a straight pipe section. A centrifugal fan is composed of a motor, a blade wheel and a volute. The utility model is characterized in that the volute is fixedly connected with the top board of the machine body as a whole body, and the outlet of the volute is connected with the inlet of the ejector base through an elbow pipe; the upper end outlet of the ejector base is connected with the ejector pipe which is placed vertically, and the center of the ejector base is provided with a circular nozzle pipe; a plurality of ejector air-stream holes are uniformly distributed on the pipe wall surface of the outer layer wrap, and the ejector base is hermetically fixed with the top board of the machine body; a disassembling and assembling hole of the blower is arranged on the top board of the machine body, and a cover board is installed on the upper side of the disassembling and assembling hole; the motor of the blower is suspended and fixed on the cover board. Compared with the prior art, the utility model has the advantage of good energy conservation effect.

Description

Fume extractor with ejector

The utility model relates to a kind of smoke exhaust ventilator that has induction apparatus.

Chinese patent CN2050137U discloses a kind of injecting type stove exhauster, and the main frame of this induced-draft fan is by a centrifugal blower, horizontal nozzles pipe, and three-way pipe and induction tunnel constitute.This host computer using ejector principle fume exhaust can prevent effectively that draught fan impeller from being dyed by greasy dirt, reduces the trouble of cleaning blower fan.But because fans entrance is located at outside the seal closure, thereby can not give full play to the effect of blower fan fume exhaust, and the horizontal-jet pipe is unfavorable for that the part building installs and uses.

The purpose of this utility model is to propose a kind of smoke exhaust ventilator of band induction apparatus of new construction, to overcome above-mentioned deficiency.

The purpose of this utility model is to realize like this; Two Taper Pipe sections and the induction tunnel that straight length constitutes, the centrifugal blower that has motor, impeller and spiral case to constitute, it is characterized in that, described spiral case and body top board connect firmly and are integral, the spiral case outlet is joined through elbow and injection seat inlet, the outlet of injection seat upper end connects the induction tunnel of vertically placing, injection seat central authorities are round nozzle pipes, uniform several injection airflow holes on the outer layer sleeve wall, injection seat and body top board sealing and fixing, a blower fan dismounting hole is arranged on the body top board, cover plate is housed on it, the motor of blower fan suspends and fixes on the cover board.The utility model has two oil suction cigarette holes, quicken after spiral case exports, elbow is sprayed at a high speed by blast tube through impeller by oil smoke gas and air gas mixture that volute inlet sucks, form negative pressure in the blast tube exit, part of smoke, injection airflow hole on the injection seat sucks and discharges through induction tunnel, after measured, the tolerance of discharging through the injection airflow hole accounts for through the volute of blower outlet and discharges 30 percent of tolerance.Hence one can see that, uses above-mentioned induction apparatus, can make the rate of air sucked in required of smoke exhaust ventilator increase by 30 percent under the condition that does not increase power of fan, when draught fan impeller need clean, open cover plate, just motor and impeller can be taken out from the dismounting hole of body top board, clean out again and install.

For after preventing long-term the use, the downward oil dripping of injection seat and pollute the kitchen, can also set up an organism soleplate, this base plate and spiral case bottom surface combine as a whole, have volute inlet on it, and have secondary suction hole, the distance that staggers of the injection seat center on this hole and the body top board, promptly can reach purpose, can collect the sump oil of interior following of injection seat again to the tonifying Qi of injection seat.

For more effectively preventing the downward oil dripping of blower fan import department, and for improving oil-collecting rate of the present utility model, can under organism soleplate, adorn an oil collecting pot, this oil collecting pot is lived fans entrance and the secondary escutcheon of inhaling simultaneously, the oil collecting pot bottom is provided with air inlet, above air inlet, be covered with an oil pooling hood, flue gas enters air inlet and enters fans entrance again through direction of oil pooling hood turnover, part oil droplet in the turnover process in the flue gas will stick on the oil pooling hood, and along in the oil pooling hood inflow oil collecting pot, not only prevent oil dripping effectively, can also purify draught fan impeller.And improved the oil-collecting rate.

Compared with the prior art the utility model has following advantage.

1, owing to adopt induction apparatus, realized a blower fan, two suction holes are air-breathing, increase inspiratory capacity, thereby have remarkable energy saving effect.

2, owing to set up the dismounting hole, be convenient to the draught fan impeller dismounting and clean.

3, owing to adopted oil collecting pot and oil pooling hood, can prevent oil dripping effectively, and when improving the oil-collecting rate, also purify draught fan impeller.

The utility model is described in further detail below to reach embodiment in conjunction with the accompanying drawings.

Fig. 1, the utility model structural representation

Fig. 2, the spiral case location drawing (Figure 1A is to view)

Fig. 3 injection seat schematic diagram

Fig. 4, two structural representations of embodiment

Fig. 5, the secondary suction hole location drawing (Fig. 4 B is to view)

Fig. 6, three schematic diagrames of embodiment

Referring to Fig. 1, the induction tunnel that the utility model has 2,3 and straight lengths of two Taper Pipe sections 1 to constitute, the centrifugal blower that constitutes by motor 7, impeller 8 and spiral case 10.Spiral case and body top board 9 are solidly fixed, and the spiral case outlet is joined through elbow and injection seat 4, and the outlet of injection seat connects the induction tunnel of vertically placing.Injection seat central authorities are round nozzle pipes 13, and uniform several injection airflow holes 5 have a circular hole on the outer layer sleeve wall on the body top board, and injection seat sealing and fixing is with it installed, and injection seat bottom has a drain oil 12.Also have a blower fan dismounting hole on this body top board, this bore dia is slightly larger than the diameter of draught fan impeller, cover plate 6 is housed on it, motor is on the cover board fastening by screw, this is the simplest a kind of form of implementation, the smoke exhaust ventilator of this form both can use separately, also can mix an exhaust fume collecting hood and use.

Fig. 4, that shown in Figure 5 is two of embodiment of the present utility model, this smoke exhaust ventilator organism top board 18, organism soleplate 19, top board and base plate are fixed by screw, the bottom surface and the organism soleplate of spiral case are designed to one, plate is also integrally welded with organism soleplate around the spiral case, have volute inlet 16 on the organism soleplate, secondary suction hole 14, injection seat on secondary suction hole and the body top board and volute inlet be not on a center line, but the distance that staggered as shown in Figure 5 only is for the convenience of drawing, with the secondary suction hole of injection seat, volute inlet is illustrated on the profile in Fig. 4.In addition, among the embodiment shown in Figure 4, injection seat 17 is the improvement that finish on the basis of injection seat 4 on the structure, injection seat after the improvement, the central nozzle pipe that goes to have disappeared, and replace by elbow, only constitute by columnar sleeve pipe, this sleeve pipe lower end and body top board sealing and fixing, the upper end connects with induction tunnel.For improving collection cigarette effect, can also join a deep layer exhaust fume collecting hood 15 on this basis.

Three of embodiment of the present utility model as shown in Figure 6, is the improvement project on two the basis of embodiment.This scheme is to install an oil collecting pot 23 below organism soleplate additional, and this oil collecting pot covers secondary suction hole 14 and volute of blower inlet 16, the sump oil under its drip is collected flow into oil box 24.Central authorities are provided with air admission hole 22 at the bottom of the oil collecting pot, an oil pooling hood 21 is fixed by three uniform support plates 20 in its top, this cover is umbrella shape, two effects are arranged, the one, catch the oil that drips in the volute of blower porch, with its water conservancy diversion in oil collecting pot, the 2nd, when the oil smoke that rises through out-of-date, adsorb wherein a part of oil droplet, purify draught fan impeller.

Claims

1, a kind of smoke exhaust ventilator with induction apparatus, two Taper Pipe sections and the induction tunnel that straight length constitutes are arranged, motor is arranged, the centrifugal blower that impeller and spiral case constitute, it is characterized in that, described spiral case and body top board connect firmly and are integral, the spiral case outlet is joined through elbow and injection seat inlet, the outlet of injection seat upper end connects the induction tunnel of vertically placing, injection seat central authorities are round nozzle pipes, uniform several injection airflow holes on the outer layer sleeve wall, injection seat and body top board sealing and fixing have a described blower fan dismounting hole on the body top board, cover plate is housed on it, and the motor of described blower fan suspends and fixes on the cover board.

2, smoke exhaust ventilator according to claim 1, it is characterized in that the organism soleplate that has one to combine as a whole with the spiral case bottom surface, which is provided with volute of blower inlet and secondary suction hole, secondary center, hole and the described injection seat mounting center distance that staggers of inhaling, organism soleplate and described body top board are fastening with screw, described injection seat is made of tubular shell, this injection seat lower end and body top board sealing and fixing, and the upper end connects induction tunnel.

3, smoke exhaust ventilator according to claim 2 is characterized in that, an oil collecting pot is installed below the described organism soleplate, and the oil collecting pot bottom center is offered air admission hole, and this top, hole is equipped with the umbrella shape oil pooling hood, and oil pooling hood is fixed by uniform three support plates and oil collecting pot.