CN2291601Y - Nozzle negative pressure cooking fume remover - Google Patents
Nozzle negative pressure cooking fume remover Download PDFInfo
- Publication number
- CN2291601Y CN2291601Y CN 97202849 CN97202849U CN2291601Y CN 2291601 Y CN2291601 Y CN 2291601Y CN 97202849 CN97202849 CN 97202849 CN 97202849 U CN97202849 U CN 97202849U CN 2291601 Y CN2291601 Y CN 2291601Y
- Authority
- CN
- China
- Prior art keywords
- jet pipe
- blower fan
- chimney
- collecting hood
- fume collecting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a nozzle negative pressure cooking fume remover. The utility model comprises a fume collecting hood and a draught fan, the middle part of the fume collecting hood is provided with a cooking fume suction mouth, the draught fan is arranged on the top surface of the fume collecting hood, the motor shaft of the draught fan is parallel to the top surface of the fume collecting hood, the air exhaust passage is in the shape of a jet tube, the fume collecting hood is provided with a chimney, the lower mouth of the chimney and the cooking fume suction mouth of the fume collectinghood are matched together, and the upper mouth of the chimney is appressed with the jet nozzle of the jet tube. The inside of the draught fan is needed to be cleaned, and the airflow of the cooking fume is easy to exhaust under the action of the lift force of the chimney. The utility model solves the problem that the existing cooking fume remover is different to clean because the surface of the blade and the inner wall of the casing of the draught fan are adhered with the cooking fume.
Description
The utility model relates to a kind of smoke exhaust ventilator, and especially a kind of smoke exhaust ventilator that need not clean blower fan belongs to the cooking apparatus field.
Present various smoke exhaust ventilators, no matter be to adopt axial fan or centrifugal fan, all be to utilize the effect of the fan blade of rotation at a high speed, earlier the oil smoke suction inlet of oil smoke from exhaust fume collecting hood sucked, under the promotion of blade (axial-flow type) then, or under the centrifugal action of the air-flow that when blade rotates, produces (centrifugal), oil smoke is discharged from discharge flue.Be sucked up in the process that is discharged from oil smoke, a large amount of tiny oil droplets contained in the oil smoke contact with fan blade, can attach on blade surface and Blower Housing inwall, form one deck grease.Time one is of a specified duration, and the grease layer that constantly thickens not only can increase the load of blower fan running, and the friction that also can increase air-flow and fan blade reduce mist extractor efficient, and the grease layer is difficult to clean up.
In view of above-mentioned, the smoke exhaust ventilator that the utility model will provide a kind of fan blade and inner walls need not clean.
The technical solution adopted in the utility model is: jet pipe suction type smoke exhaust ventilator, comprise exhaust fume collecting hood and blower fan, the middle part of exhaust fume collecting hood has the oil smoke suction inlet, and blower fan is contained in the end face of exhaust fume collecting hood, it is characterized in that: the motor shaft of described blower fan is parallel with described exhaust fume collecting hood end face, and its exhaust passage is the jet pipe shape; On the described exhaust fume collecting hood chimney is set, the end opening of chimney overlaps with the oil smoke suction inlet of described exhaust fume collecting hood, and the spout of the suitable for reading and described jet pipe of chimney is close to.
Described blower fan is two, and by being symmetrically arranged, described chimney is surrounded by the outer wall of baffle plate and jet pipe.
The cross section suitable for reading of described chimney is less than its end opening cross section.
The nozzle exit of described blower fan jet pipe is less than the air inlet cross section of blower fan, from bottom to top successively decreases in the cross section of jet pipe.
The spout of described blower fan jet pipe top connects and prevents that tobacco smoke droplets from going into the tilting baffle plate of blower fan.
Oil smoke in the exhaust fume collecting hood rises along chimney, and during the blower fan rotation, the spout of jet pipe forms negative-pressure air-flow, oil smoke is directly brought to total smokejack discharge.
Because the utility model is directly to take oil smoke out of total smokejack by the negative pressure that blower fan produces, oil smoke is not flowed through in the Fan casing, and Blower Housing inwall and blade surface can not attach oil droplet, so blower fan inside need not cleaned; Simultaneously because the utility model is provided with chimney, so can make the easier discharge under the lift effect of chimney of tobacco tar air-flow.
Below in conjunction with drawings and Examples the utility model is elaborated.
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the structural representation that is installed at the grease proofing drip apparatus at spout place;
Fig. 3 is the draught fan impeller structural representation.
See also Fig. 1.The utility model is by exhaust fume collecting hood 1 and the centrifugal blower 2,2 that is symmetrically arranged ' constitute.Rectangle oil smoke suction inlet E-F-G-H is opened at the middle part of exhaust fume collecting hood 1.Blower fan is contained in the end face of exhaust fume collecting hood 1, its motor shaft is parallel with the end face of exhaust fume collecting hood 1, blower fan is established air inlet duct and exhaust passage, its exhaust passage 4,4 ' be taper type jet pipe shape, from bottom to top successively decrease in the cross section of jet pipe, the cross section of the rectangular jet A-B-C-D of jet pipe (A '-B '-C '-D ') is less than rectangle air inlet I (I ').On the exhaust fume collecting hood 1 chimney is set, this chimney by front and rear baffle (not shown) and left and right sides jet pipe (being air outlet) 4,4 ' outer wall surround.Its end opening overlaps with the oil smoke suction inlet E-F-G-H of exhaust fume collecting hood 1, and its B-A ' suitable for reading-D '-C is rectangular, and is close to the spout of the jet pipe of left and right sides blower fan, and its cross section suitable for reading is less than its end opening cross section.3 is the oil smoke passage in the chimney.
Room air from air inlet I and I ' enter respectively two blower fans 2 and 2 ' in, under the effect of fan blade, respectively blow out from spout A-B-C-D and A '-B '-C '-D '.Because the nozzle exit of blower fan jet pipe is less than air inlet, and jet pipe 4 and 4 ' be again frustum shape, therefore the air velocity that blows out from spout is greater than the air velocity of jet pipe 4 and 4 ' lower end, thereby the spout place at blower fan forms the high velocity jet air-flow, the stream pressure that this stream pressure will be located much smaller than air inlet I and I ' and form negative pressure, and under the comprehensive function of the chimney swabbing effect of oil smoke passage 3, oil smoke is drawn to the suitable for reading of chimney from the oil smoke suction inlet of exhaust fume collecting hood 1, mixes the back with high velocity air that spout A-B-C-D and A '-B '-C '-D ' locate to spray and discharge to total exhausting duct.
At oil smoke from the whole process that is inhaled into discharge, oil smoke is not via blower fan inside, so Blower Housing inwall and blade can thereby need not clean because of the deposition soot particles not form the grease layer, required cleaning only be oil smoke passage 3 in the chimney of very easily cleaning.
The outer wall of jet pipe constitutes the part of chimney wall among the figure, but economical with materials like this.
In addition, for preventing that the oil smoke that condenses on total exhausting duct tube wall from splashing in the spout of blower fan, can be as shown in Figure 2, above the spout of blower fan jet pipe, connect tilting baffle plate 5, Di Luo oil droplet just can flow to the bottom of the tube connector 6 of smoke exhaust ventilator and total exhausting duct along the upper surface of baffle plate 5 like this, flows to the catchment cup 8 from outage 7 again.
The draught fan impeller that the utility model adopted as shown in Figure 3, blade shape is for directly tabular, its effect is that the air-flow that blower fan is sucked obtains big as far as possible acceleration under the impetus of rotating vane, so that the bigger negative pressure of outside nozzle generation.
In other embodiment of the present utility model, the structure of each parts can change as required, as:
Can adopt normally used centrifugal blower, its air inlet is positioned at blower fan circle center position;
Can adopt the separate unit blower fan, this moment, chimney was surrounded by the outer wall of baffle plate and this blower fan jet pipe;
Chimney also can not used the outer wall of jet pipe and surround with baffle plate separately, and its cross section both can be rectangle and also can be circle, and its shape both can be taper type and also can be straight tubular;
Blade shape can be designed to parabolic shape.
Claims (10)
1. a jet pipe suction type smoke exhaust ventilator comprises exhaust fume collecting hood and blower fan, and the middle part of exhaust fume collecting hood has the oil smoke suction inlet, and blower fan is contained in the end face of exhaust fume collecting hood, it is characterized in that:
The motor shaft of described blower fan is parallel with described exhaust fume collecting hood end face, and its exhaust passage is the jet pipe shape;
On the described exhaust fume collecting hood chimney is set, the end opening of chimney overlaps with the oil smoke suction inlet of described exhaust fume collecting hood, and the spout of the suitable for reading and described jet pipe of chimney is close to.
2. jet pipe suction type smoke exhaust ventilator as claimed in claim 1, it is characterized in that: described chimney is surrounded by the outer wall of baffle plate and described jet pipe.
3. jet pipe suction type smoke exhaust ventilator as claimed in claim 1 is characterized in that: described blower fan is two, and by being symmetrically arranged, described chimney is surrounded by the outer wall of front and rear baffle and left and right sides jet pipe.
4. as the described jet pipe suction type of one of claim 1 to 3 smoke exhaust ventilator, it is characterized in that: the cross section suitable for reading of described chimney is less than its end opening cross section.
5. jet pipe suction type smoke exhaust ventilator as claimed in claim 1 is characterized in that: the nozzle exit of described blower fan jet pipe is less than the air inlet cross section of blower fan.
6. jet pipe suction type smoke exhaust ventilator as claimed in claim 1, it is characterized in that: from bottom to top successively decrease in the cross section of described blower fan jet pipe.
7. jet pipe suction type smoke exhaust ventilator as claimed in claim 1 is characterized in that: the spout of described blower fan jet pipe top connects and prevents that tobacco smoke droplets from going into the tilting baffle plate of blower fan.
8. jet pipe suction type smoke exhaust ventilator as claimed in claim 1 is characterized in that: the blade of described blower fan is directly tabular.
9. jet pipe suction type smoke exhaust ventilator as claimed in claim 1, it is characterized in that: the blade of described blower fan is parabolic shape.
10. jet pipe suction type smoke exhaust ventilator as claimed in claim 1 is characterized in that: the air inlet of described blower fan is positioned at blower fan circle center position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97202849 CN2291601Y (en) | 1997-04-01 | 1997-04-01 | Nozzle negative pressure cooking fume remover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97202849 CN2291601Y (en) | 1997-04-01 | 1997-04-01 | Nozzle negative pressure cooking fume remover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2291601Y true CN2291601Y (en) | 1998-09-16 |
Family
ID=33923890
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97202849 Expired - Fee Related CN2291601Y (en) | 1997-04-01 | 1997-04-01 | Nozzle negative pressure cooking fume remover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2291601Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103335348A (en) * | 2013-06-24 | 2013-10-02 | 东南大学 | Extractor hood |
| CN105351988A (en) * | 2015-11-10 | 2016-02-24 | 广州易碳节能科技有限公司 | Efficient range hood capable of being kept clean easily |
-
1997
- 1997-04-01 CN CN 97202849 patent/CN2291601Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103335348A (en) * | 2013-06-24 | 2013-10-02 | 东南大学 | Extractor hood |
| CN103335348B (en) * | 2013-06-24 | 2015-08-26 | 东南大学 | A kind of range hood |
| CN105351988A (en) * | 2015-11-10 | 2016-02-24 | 广州易碳节能科技有限公司 | Efficient range hood capable of being kept clean easily |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |