CN2177882Y

CN2177882Y - Rolling suction type fume extractor

Info

Publication number: CN2177882Y
Application number: CN 93234932
Authority: CN
Inventors: 周宏发
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-10-30
Filing date: 1993-10-30
Publication date: 1994-09-21
Anticipated expiration: 2003-10-30

Abstract

The utility model relates to a civil cooking fume exhauster. A reducing gas spraying pipe and a reducing mixing pipe are axially arranged below a machine cover in line at intervals. The periphery under a spacing port is provided with an oil fume covering plate which inclines down. A spacing distance X< 0 > between the mixing pipe and the gas spraying pipe is the 4.5 to 5.5 times of the height b< 0 > of the port of the gas spraying pipe. The port of the mixing pipe is bigger than the port of the gas spraying pipe. The lower periphery of the oil fume covering plate is provided with an oil collecting slot which turns inward. The mixing pipe, the gas spraying pipe, and the machine cover are integral means. The gas spraying pipe is connected with a blower fan. The utility model has the advantages of simple structure, low cost, high efficiency, convenient maintenance and cleaning, and long service life; the civil cooking fume exhauster is suitable for exhausting oil fume in a kitchen.

Description

Rolling suction type fume extractor

The utility model relates to a kind of remover of civilian cooking flue gas.

The smoke exhaust ventilator greatest drawback of present numerous patterns is that pernicious gas such as oil smoke is serious to parts erosion pollution in the machine, causes that part damages too early in the machine, and loses its normal function, and its service life is short, and cleaning mud oil is very inconvenient.People have also carried out a lot of research to smoke exhaust ventilator, as the disclosed jetting type fume exhaust device of Chinese patent (patent No. 91221067.2 CN211893U), though it has avoided above-mentioned defective, but because its structure is complicated and smoke pumping efficient is low, the cost height, power consumption is big, and can not reach satisfied result of use.

The purpose of this utility model is to provide a kind of simple in structure, cost is low, efficient is high entraining type oil pumper.

The utility model is finished with following mode: entraining type cooking fume exhauster, it comprises that blower fan 1 and hood 3 are equipped with for 3 times axially to reducing breather pipe 2 and reducing mixing tube 4 straight, that install at interval at hood, air jet pipe 2 is that the less port in its cross section is relative with mixing tube 4, and the port of mixing tube 4 is greater than the port of air jet pipe 2, the spacing distance X of air jet pipe 2 and mixing tube 4.Be the less port height b in air jet pipe 2 cross sections.3.5 to 4.5 times, the other end of air jet pipe 2 connects blower fan 1, in the port following peripheral, interval of air jet pipe 2 and mixing tube 4 downward-sloping oil smoke cover plate 7 is arranged.There is the oil trap 8 that inwardly turns over the following peripheral of oil smoke cover plate 7.Air jet pipe 2 is rectangle or circle with the cross sectional shape of mixing tube 4.The mixing tube 4 of square-section is formed two side by hood 3 and oil smoke cover plate 7, and the air jet pipe 2 of square-section is formed an one side by hood 3.

The utility model entraining type cooking fume exhauster is to have adopted high velocity air to entrainment principle, so its suction oil smoke ability is big, efficient is high, it is simple in structure, and its air jet pipe and mixing tube can be made into one with hood, also can make modular single-piece, it is low to have cost, maintenance is very convenient with cleaning, and pernicious gases such as the oil smoke that is sucked can not produce erosion and pollution not by each electric controling element in blower fan and air jet pipe and the machine to it, part is not fragile, long service life.This machine is except that the suction oil smoke, and blower fan also works to take away indoor dirty erosion air simultaneously, makes the kitchen room air fresh.

Fig. 1 is the utility model structural representation.

Fig. 2 is the utility model vertical view.

Fig. 3 is the A-A cutaway view of Fig. 1.

Fig. 4 is that the O-O of Fig. 1 analyses and observe left view.

Fig. 5 is that the O-O of Fig. 2 analyses and observe right view.

Below in conjunction with accompanying drawing the utility model is described in further detail.

As shown in Figure 1 and Figure 2, the utility model entraining type cooking fume exhauster is by hood one reducing air jet pipe 2 to be arranged for 3 times, the bigger end in air jet pipe 2 cross sections connects blower fan 1, air jet pipe 2 axially to Nogata to, one reducing mixing tube 4 is housed at interval, the less port in mixing tube 4 cross sections is facing to the port of air jet pipe 2, and the port of mixing tube 4 is greater than the port of air jet pipe 2, the spacing distance X between air jet pipe 2 and the mixing tube 4.Be air jet pipe 2 port height b.3.5 times to 4.5 times, the cross section of air jet pipe 2 and mixing tube 4 is rectangles, also can be circular.The utility model adopts the square-section.There is downward-sloping oil smoke cover plate 7 port following peripheral, interval at air jet pipe 2 and mixing tube 4, and there is the oil trap 8 that inwardly turns over oil smoke cover plate 7 following peripherals, and in the port of export bottom of mixing tube 4 oil collection box 6 is housed.Simple in structure for making, reduce cost, mixing tube 4 of the present utility model is to utilize hood 3 and oil smoke cover plate 7 to form two side, as Fig. 1, Fig. 2, Fig. 3, Fig. 4, shown in Figure 5, mixing tube 4 is made into one with hood 3, also mixing tube 4 can be made into single-piece certainly, reinstalls in the hood 3.Air jet pipe 2 is to utilize hood 3 to form an one side, and other three sides are formed with dividing plate 9, and its cross section is a rectangle, and dividing plate 9 is done sealing and used, in case oil smoke is to 10 corrosion of the electrical equipment in the electrical equipment chamber 11.Exhaust outlet at mixing tube 4 is equipped with blast pipe 5.

The course of work of the utility model entraining type cooking fume exhauster is: the air-flow that is bloated by blower fan 11 sprays at a high speed through air jet pipe 2, below the hood middle part, form the high velocity air bundle, surrounding air is produced very big velocity gradient, surrounding air is promptly entrainmented by high velocity air and is taken away, so hood produces a negative pressure region below the middle part, in pernicious gas inspiration mixing tubes 4 such as oil smoke, mixed airflow is discharged outdoor by blast pipe 5 after reducing flow velocity through the section that enlarges gradually.

Claims

1, a kind of entraining type cooking fume exhauster, it comprises blower fan (1) and hood (3), it is characterized in that under hood (3), being equipped with axially to reducing breather pipe (2) and reducing mixing tube (4) straight, that install at interval, air jet pipe (2) is that the less port in its cross section is relative with mixing tube (4), and the port of mixing tube (4) is greater than the port of air jet pipe (2), the spacing distance X of air jet pipe (2) and mixing tube (4) _oBe the less port height b in air jet pipe (2) cross section _O3.5 to 4.5 times, the other end of air jet pipe (2) connects blower fan (1), in the port following peripheral, interval of air jet pipe (2) and mixing tube (4) downward-sloping oil smoke cover plate (7) is arranged.

2, lampblack absorber according to claim 1 is characterized in that there is the oil trap (8) that inwardly turns over the following peripheral of oil smoke cover plate (7).

3,, it is characterized in that the air jet pipe (2) and the cross sectional shape of mixing tube (4) are rectangle or circle according to the described lampblack absorber of claim 1.

4, according to claim 1 or 2 or 3 described lampblack absorbers, it is characterized in that the mixing tube (4) of square-section is formed two side by hood (3) and oil smoke cover plate (7), the air jet pipe of square-section (2) is formed an one side by hood (3).