CN1113312A - Annular umbrella-like gas-proof curtain exhaust hood - Google Patents
Annular umbrella-like gas-proof curtain exhaust hood Download PDFInfo
- Publication number
- CN1113312A CN1113312A CN 95114855 CN95114855A CN1113312A CN 1113312 A CN1113312 A CN 1113312A CN 95114855 CN95114855 CN 95114855 CN 95114855 A CN95114855 A CN 95114855A CN 1113312 A CN1113312 A CN 1113312A
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- umbrella
- air
- blades
- gas
- exhaust hood
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Abstract
The exhausting fanner has a motor-to-drive combination type blade wheel comprised of two sets of blades which respectively form two concentric circular umbrella hoods, thus forming a central part which sucks the air upwards and a ring type umbrella air screen part which blows the air downwards, the ring type umbrella air screen forms an extended latent umbrella sucking hood; it reduces the attenuation of the axial air sucking speed, prevents the diffusion of harmful gases, and enhances the local sucking and exhausting effects, it can be used in kitchens and workshops with harmful gases.
Description
Annular umbrella-like gas-proof curtain exhaust hood relates to a kind of pressure-vaccum exhaust hood in the local exhaust system, is applicable to the concentrated in a organized way discharging of indoor local pernicious gas.
Be known as the diffusion of pernicious gas on the office operation face of preventing, make it to concentrate in a organized way discharging, usually adopt two kinds of local exhaust methods: the first is provided with an exhaust hood above the scope of operation, for ease of operating on the scope of operation, suspended hood can not seal the entire job face, so when interference in air flow, pernicious gas is in a large number to diffusion all around, air draft poor effect on the scope of operation.Other method is at the relative exhaust hood of the scope of operation opposite side blower system to be set again, makes blowing form air curtain overwrite job face, and blows to exhaust hood, and the suction effect is better than the former, but equipment investment is big, installs complicated.
The objective of the invention is to realize with motor shaft both effectively having prevented the diffusion of pernicious gas, strengthen local suction effect again to being the coniform air draught part of central area and around the annular umbrella-like air curtain blowing part in air draught zone, center with a simple mechanism.
Principle features of the present invention: be divided into the combined impeller that two groups of blades of Internal and external cycle constitute by one of a motor-driven, cooperate inside and outside two concentric circular parachute covers respectively, formation is with the bottom-up air draught in axle central area part with around central area top-down annular umbrella-like air curtain blowing part, annular umbrella-like air curtain blowing part partly constitutes a stealthy umbrella suspended hood that extends to the scope of operation for the air draught of central area, reduce the spherical solid angle of inspiratory flow, reduced the decay vertically of air draught speed.Owing to the air draught effect of axle central area forms negative pressure and causes: the The initial segment of (one) annular umbrella-like air curtain blowing jet and main paragraph are along the air-flow amount of entrainmenting of the umbrella air curtain inner side edge interlayer air-flow amount of entrainmenting less than the outer side edges interlayer.(2) end of annular umbrella-like air curtain jet draws in to the axle center, mixes that pernicious gas is bottom-up to pick up, and forms gas flow loop.So, when the space that the scope of operation places the annular umbrella-like air curtain to be surrounded, just can effectively prevent the diffusion of pernicious gas, reach satisfied suction effect.
The present invention and prior art compare and have:
1, the present invention has used conical jet current principle, and the characteristics in conjunction with the umbrella shape suspended hood have breakthrough development.
2, the present invention is in concrete the application, and equipment investment is few, and energy consumption is low.
3, the present invention is in concrete the application, compact conformation, simple installation.
Now in conjunction with the accompanying drawings the present invention is described further:
Motor in the accompanying drawing (1) is fixed in air duct (4) inwall by support, motor (1) drives a combined impeller that is formed by annulus connection by the some blades of some blades of inner ring (2) and outer ring (3), wherein blade (2) is an axial--flow blading, blade (3) be between axial-flow type and centrifugal between runner bucket, umbrella cover (5) is contained in the impeller outside, constitute the outside wind path wall of blade (3), umbrella cover (6) connects with umbrella cover (5), be contained under the impeller, promptly being the suspended hood of axial--flow blading (2), is again the inboard wind path wall of runner bucket (3).The space that the scope of operation (7) places annular umbrella-like air curtain jet and air draught to be surrounded.
Remarks:
Consult: the Lu Yaoqing of China Construction Industry Press's (in December, 1987 front page) edits " heating ventilator design manual ".The 659th～663 page, 702～742 pages.
Claims (2)
- Annular umbrella-like gas-proof curtain exhaust hood is applicable to the concentrated in a organized way discharging of indoor local pernicious gas, it is characterized in that:1, the some blades of impeller inner ring (2) and umbrella cover (6) constitute with the electrical axis be the center from air draught zone that the scope of operation (7) makes progress.The some blades in impeller outer ring (3) and umbrella cover (5), the common top-down annular umbrella-like air curtain blowing jet that constitutes around the air draught zone of umbrella cover (6).
- 2, one of motor-driven is divided into the combined impeller that two groups of blades of Internal and external cycle constitute, inner ring blade (2) (as is equipped with helical line type air channel for some axial--flow bladings, also centrifugal blade), outer ring blade (3) be some between axial-flow type and centrifugal between runner bucket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95114855 CN1113312A (en) | 1995-04-08 | 1995-04-08 | Annular umbrella-like gas-proof curtain exhaust hood |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95114855 CN1113312A (en) | 1995-04-08 | 1995-04-08 | Annular umbrella-like gas-proof curtain exhaust hood |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1113312A true CN1113312A (en) | 1995-12-13 |
Family
ID=5080340
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95114855 Pending CN1113312A (en) | 1995-04-08 | 1995-04-08 | Annular umbrella-like gas-proof curtain exhaust hood |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1113312A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101970944A (en) * | 2009-02-24 | 2011-02-09 | 株式会社Gtec | Local exhaust apparatus |
| CN102527686A (en) * | 2012-02-15 | 2012-07-04 | 西安建筑科技大学 | Parallel flow air curtain exhaust device |
| CN103453635A (en) * | 2012-09-19 | 2013-12-18 | 海尔集团公司 | Air supply method implemented by floor air conditioner |
| CN103453639A (en) * | 2013-06-03 | 2013-12-18 | 海尔集团公司 | Air supply device of floor air conditioner |
| CN104456888A (en) * | 2013-09-18 | 2015-03-25 | 海尔集团公司 | Air-conditioner air supplier and floor air conditioner |
| CN107838166A (en) * | 2017-11-09 | 2018-03-27 | 邝勇兴 | A kind of gas-solid combination orientation afflux dust exhaust apparatus and method |
| CN109821851A (en) * | 2019-03-28 | 2019-05-31 | 徐州博源科技有限公司 | A kind of dispatch one composite ventilating duct and dust gathering arrester |
| CN109847956A (en) * | 2019-01-25 | 2019-06-07 | 南京工业大学 | A kind of exhaust system that the annular air curtain suitable for medicament compartment material filtering centrifuge pollutant catabolic gene combines |
| CN112090912A (en) * | 2020-09-22 | 2020-12-18 | 东南大学 | Modularized air curtain separation downdraft welding smoke dust collecting device |
| CN112771316A (en) * | 2018-07-18 | 2021-05-07 | 金知河 | Local exhaust device |
-
1995
- 1995-04-08 CN CN 95114855 patent/CN1113312A/en active Pending
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101970944A (en) * | 2009-02-24 | 2011-02-09 | 株式会社Gtec | Local exhaust apparatus |
| CN102527686B (en) * | 2012-02-15 | 2014-01-01 | 西安建筑科技大学 | Parallel flow air curtain exhaust device |
| CN102527686A (en) * | 2012-02-15 | 2012-07-04 | 西安建筑科技大学 | Parallel flow air curtain exhaust device |
| CN103453635A (en) * | 2012-09-19 | 2013-12-18 | 海尔集团公司 | Air supply method implemented by floor air conditioner |
| CN103453639B (en) * | 2013-06-03 | 2015-09-02 | 海尔集团公司 | A kind of vertical air conditioner air-supply arrangement |
| CN103453639A (en) * | 2013-06-03 | 2013-12-18 | 海尔集团公司 | Air supply device of floor air conditioner |
| CN104456888A (en) * | 2013-09-18 | 2015-03-25 | 海尔集团公司 | Air-conditioner air supplier and floor air conditioner |
| CN104456888B (en) * | 2013-09-18 | 2017-02-08 | 海尔集团公司 | Air-conditioner air supplier and floor air conditioner |
| CN107838166A (en) * | 2017-11-09 | 2018-03-27 | 邝勇兴 | A kind of gas-solid combination orientation afflux dust exhaust apparatus and method |
| CN112771316A (en) * | 2018-07-18 | 2021-05-07 | 金知河 | Local exhaust device |
| CN109847956A (en) * | 2019-01-25 | 2019-06-07 | 南京工业大学 | A kind of exhaust system that the annular air curtain suitable for medicament compartment material filtering centrifuge pollutant catabolic gene combines |
| CN109821851A (en) * | 2019-03-28 | 2019-05-31 | 徐州博源科技有限公司 | A kind of dispatch one composite ventilating duct and dust gathering arrester |
| CN112090912A (en) * | 2020-09-22 | 2020-12-18 | 东南大学 | Modularized air curtain separation downdraft welding smoke dust collecting device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C53 | Correction of patent for invention or patent application | ||
| CB02 | Change of applicant information |
Address after: 528311 Liang Rongji, middle hair Road, Beijiao Town, Shunde Applicant after: Shunde Guangdong Shuncheng Electrical Appliance Factory Applicant before: Wang Weiguo |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: APPLICANT; FROM: WANG WEIGUO TO: SHUNHUA ELECTRIC APPLIANCE FACTORY, SHUNDE CITY, GUANGDONG |
|
| AD01 | Patent right deemed abandoned | ||
| C20 | Patent right or utility model deemed to be abandoned or is abandoned |