CN2289082Y - Negative pressure fire-fighting fume extractor - Google Patents
Negative pressure fire-fighting fume extractor Download PDFInfo
- Publication number
- CN2289082Y CN2289082Y CN 96241517 CN96241517U CN2289082Y CN 2289082 Y CN2289082 Y CN 2289082Y CN 96241517 CN96241517 CN 96241517 CN 96241517 U CN96241517 U CN 96241517U CN 2289082 Y CN2289082 Y CN 2289082Y
- Authority
- CN
- China
- Prior art keywords
- air duct
- negative pressure
- guide vane
- smoke exhaust
- cone
- 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
Links
Abstract
The utility model relates to a dual-purpose smoke exhaust fan for the smoke exhaust of fire-fighting and air conditioning ventilation. In order to realize the purposes that the utility model can adopt a negative pressure motor cooling system and can have the advantages of simple structure, low wind resistance in a high-temperature exhaust pipe and motor load, long service life and high-temperature operating time of the motor, the utility model adopts a hollow guide vane in which an air inlet pipe and vanes are arranged for fixing an inner wind-cone in an outer wind-cone, wherein the inner wall of the inner wind-cone is provided with a thermal insulation layer of which the front side end is provided with a negative pressure air outlet pipe, and the inner wind-cone and the outer wind-cone are communicated by the air inlet pipe. Therefore, the utility model can be widely used for the high-temperature smoke exhaust of the fire-fighting and the indoor ventilation of an air-conditioning room, and is the ideal smoke exhaust fan.
Description
The utility model relates to a kind of fire-fighting smoke evacuation fire and the dual-purpose smoke exhaust fan of air conditioner ventilation.
Traditional blower fan, usually at round tube internal fixation electric machine support, fixed electrical machinery on the support, the motor shaft front end is provided with impeller, and motor rotates impeller with the wind end inspiration of conforming to the principle of simplicity, and discharges from the other end, uses as exhaust ventilation.But be used to roast the smoke exhaust fan of High Temperature Gas bodies such as greenhouse and fire-fighting, then require in tube under the high-temperature condition, be generally and be higher than under 170 ℃ of temperature, motor is unlikely burning and running well still, this just requires motor must put in the inner core of setting up in tube, inner core communicates with the outer cool air of tube by turnover wind guide hole, outer being connected with impeller of inner core that the interior motor shaft of inner core stretches out sealing is used for the suction and pumping high-temperature flue gas, the motor shaft rear end prolongs the circulating wind impeller that connection is positioned at inner core, thereby forms the motor cooling system of inner core and the high temperature discharge pipeline between inner core and the urceolus.This traditional fire-fighting blower fan has following deficiency, the high temperature discharge pipeline, guide vane, air intake pipe, the inner core pillar stands in great numbers, stop the normal discharging of flue gas, impeller and interior circulating wind wheel rotation before and after motor drives simultaneously increase the weight of motor load, and suction air volume and life-span reduce significantly, and inner core itself is not heat insulation simultaneously, the inner core quick heating, motor easily burns.
Therefore, the purpose of this utility model is: design a kind of negative pressure type smoke exhaust fan, adopt the vacuum motor cooling system, it is simple in structure that it is had, and windage is little little with motor load in the high temperature discharge pipeline, and the life-span is long, electromotor high-temperature long advantage running time.
The utility model adopts guide vane hollow, be provided with air intake pipe in the guide vane, guide vane is fixed on interior air duct in the outer air duct, the inside and outside air duct of air intake pipe conducting in the guide vane, interior air duct front side end is provided with depression outleting pipe, the outer end of depression outleting pipe outside between air duct and the interior air duct, scribble thermal-protective coating on the interior air duct inwall, said structure has been realized the purpose of this utility model.
Distinguished and admirable fast between inside and outside air duct that the utility model utilizes that impeller sets produces, the negative pressure of depression outleting pipe outer end air being taken away and producing is taken away the motor heat in the interior air duct, and utilize ventilation duct to carry out the vacuum motor cooling system of circulating cold air, it is low to have cost simple in structure, be easy to make, windage is little in the high temperature discharge pipeline, it is effective to smoke, thereby no longer motor is cooled off and reduced motor load by the interior circulating wind impeller in the interior air duct, i.e. economize on electricity, can increase power of motor again, also can prolong electrical machinery life, and motor is prolonged in the condition of high temperature following working time significantly.
The utility model is described in further detail below in conjunction with accompanying drawing
Fig. 1 the utility model schematic representation
The utility model comprises outer air duct 2, interior air duct 5, motor 6, impeller sets 1, guide vane 7 hollows are provided with air intake pipe 9 in the guide vane, guide vane is fixed on interior air duct in the outer air duct, air duct and outer air duct in the air intake pipe conducting in the guide vane, interior air duct front side end is provided with depression outleting pipe, the outer end of depression outleting pipe 4 outside between air duct and the interior air duct, interior air duct inwall is provided with thermal-protective coating 8, air intake pipe is positioned at the guide vane rear end, and air intake pipe communicates with interior air duct rear side end.Be filled with thermal insulating material 10 between air intake pipe and the guide vane inwall.The blade of impeller sets is the single panel type blade.
During concrete the making, make outer air duct and diameter interior air duct, make the hollow guide vane with two-layer iron plate less than outer air duct, be the curved shape ladder type to reduce windage, wind-guiding is established air intake pipe 9 in the guide vane smoothly, be filled with thermal-protective material such as slag wool, asbestos etc. between air intake pipe and the guide vane inwall.So that air intake pipe is heat insulation, guide vane one end and outer air duct inwall welding, on the air duct outer wall, guide vane was established 2-4 usually in the other end was welded on, and best three, outer air duct and interior air duct and air intake pipe corresponding position are established the hole, make air intake pipe be communicated with inside and outside air duct.For strengthening heat insulationly scribbling the heat insulation paint vehicle of one deck, by being purchased product on the market at interior air duct inwall.Be provided with depression outleting pipe 4 in interior air duct front side end, can be provided with 2-4, the best is positioned at the air duct outside, a hole on the also interior air duct.Motor 6 is arranged in air duct, uses bolt between motor and the interior air duct, wears asbestos packing 3 on the bolt so that retaining space between motor and the interior air duct, and the axis hole of air duct front end was connected with the wind wheel group in motor shaft passed.
During use, the driven by motor impeller is discharged high-temperature gas between inside and outside air duct, this high temperature flow velocity, high gas is taken away outer end gas in the depression outleting pipe, thereby make depression outleting pipe produce negative pressure, gas in the interior air duct is extracted out, cool air air duct in the ventilation duct air intake, the vacuum motor cooling procedure is finished in the circulation of formation negative pressure air.This blower fan also can be widely used in accent, and in the empty interior exhaust system, the single panel type blade is that traditional product is not repeated.
In a word, the utility model is simple in structure, and cost is low, and materials are few, and motor load is little, is a kind of desirable fire-fighting smoke ventilator.
Claims (4)
1, a kind of negative pressure type smoke exhaust fan, comprise outer air duct, interior air duct, motor, impeller sets, it is characterized in that guide vane hollow, be provided with air intake pipe (9) in the guide vane, guide vane is fixed on interior air duct in the outer air duct, air duct and outer air duct in the air intake pipe conducting in the guide vane, interior air duct front side end is provided with depression outleting pipe (4), the outer end of depression outleting pipe outside between air duct and the interior air duct, interior air duct inwall is provided with thermal-protective coating.
2, a kind of negative pressure type smoke exhaust fan according to claim 1, it is characterized in that: air intake pipe is positioned at the guide vane rear end, and air intake pipe communicates with interior air duct rear side end.
3, a kind of negative pressure type smoke exhaust fan according to claim 1 is characterized in that: be filled with thermal-protective material between air intake pipe and the guide vane inwall.
4, a kind of negative pressure type smoke exhaust fan according to claim 1, it is characterized in that: the blade of impeller sets is the single panel type blade.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96241517 CN2289082Y (en) | 1996-10-29 | 1996-10-29 | Negative pressure fire-fighting fume extractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96241517 CN2289082Y (en) | 1996-10-29 | 1996-10-29 | Negative pressure fire-fighting fume extractor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2289082Y true CN2289082Y (en) | 1998-08-26 |
Family
ID=33915897
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96241517 Expired - Fee Related CN2289082Y (en) | 1996-10-29 | 1996-10-29 | Negative pressure fire-fighting fume extractor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2289082Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102072177A (en) * | 2011-02-28 | 2011-05-25 | 昆山兆年涂装科技有限责任公司 | Exhaust fan |
| CN105317716A (en) * | 2015-12-08 | 2016-02-10 | 中车大连机车研究所有限公司 | Compound cooling ventilator with interior self-adaption cooling circulation |
| CN107956736A (en) * | 2017-12-10 | 2018-04-24 | 安徽银龙泵阀股份有限公司 | A kind of centrifugation impeller of pump with negative pressure blade |
-
1996
- 1996-10-29 CN CN 96241517 patent/CN2289082Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102072177A (en) * | 2011-02-28 | 2011-05-25 | 昆山兆年涂装科技有限责任公司 | Exhaust fan |
| CN105317716A (en) * | 2015-12-08 | 2016-02-10 | 中车大连机车研究所有限公司 | Compound cooling ventilator with interior self-adaption cooling circulation |
| CN107956736A (en) * | 2017-12-10 | 2018-04-24 | 安徽银龙泵阀股份有限公司 | A kind of centrifugation impeller of pump with negative pressure blade |
| CN107956736B (en) * | 2017-12-10 | 2019-09-10 | 安徽银龙泵阀股份有限公司 | A kind of centrifugation impeller of pump with negative pressure blade |
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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 |