CN2773355Y

CN2773355Y - Upward air exhausting device on roof

Info

Publication number: CN2773355Y
Application number: CN 200520039910
Authority: CN
Inventors: 张劲戈
Original assignee: Shanghai Nautilus General Equipment Manufacturing Co Ltd
Current assignee: Shanghai Nautilus General Equipment Manufacturing Co Ltd
Priority date: 2005-03-02
Filing date: 2005-03-02
Publication date: 2006-04-19
Anticipated expiration: 2015-03-02

Abstract

The utility model discloses an environment-friendly type upward air exhausting device structure, which comprises an electric machine casing, an impeller exhaust hood, an electric machine and a centrifugal impeller, etc. Component parts. A casing is arranged outside the electric machine. The upward air exhausting impeller exhaust hood is arranged outside the electric machine casing. The centrifugal impeller is arranged in the impeller exhaust hood. A driving shaft is installed on the middle part of the electric machine casing. The upper end of the driving shaft is connected with the electric machine transmission shaft, and the lower end is connected with the centrifugal impeller. Moreover, a cold air induction pipe is installed on the electric machine casing. The upward air exhausting device on roof of the utility model has the advantages of enlarged exhaustion diffusion range, environmental protection, longtime and high efficient operation, etc.

Description

The upward type roof extract unit

Technical field

The utility model relates to a kind of roof ventilator, relates in particular to a kind of upward type roof extract unit, is specially adapted to get rid of the gas that is polluted, and for example wherein contains the exhaust of kitchen fume or workshop machine oil etc.

Background technique

Roof extract unit generally is installed in the roof of steel structure or concrete structure building, is used for from indoor discharge gas, finishes the ventilation requirement of designing institute regulation.

This class blower fan generally is installed on the flashing on roof." flashing " is the address to a kind of building structure, promptly opens a hole on the roof and make the turned welt of upwards digging on every side at the hole to flow into indoor from the hole with the prevention rainwater.

Because roof ventilator is installed on the roof, so mostly be to adopt impeller following, motor is at last mode of structure.The roof ventilator of prior art generally adopts " bottom blowing type " design, and promptly air-out direction is downwards, blows out facing to roofing.The gas that contains certain pollution in eliminating is kitchen fume for example, the workshop contains the air of volatilization machine oil, and meeting room smoke, during contaminated gas such as lavatory air draft, because air-out is hindered and can not be spread rapidly, and might be by other equipment such as suctions such as the cooling fan of cooling tower, air conditioner outdoor machine, new blower fan group of roofing, access arrangement is inner even reenter building interior.Simultaneously, the pollutant that may contain in the air will pollute roofing.Therefore, common blowing the type blower fan is providing enough blast down, and gets rid of the aspect that contains some pollutants, has certain obstacle.

Adopt the centrifugal roof ventilator of upward type structure can improve the outlet wind speed, the increasing exhaust range of scatter reduces contaminant concentration rapidly, and enough blast are provided.Yet because the air draft cap upwards, motor and drive part exist to be needed cooling and prevents pollution problem.Need to consider the collection problem of pollutant simultaneously.

Summary of the invention

At the deficiency that prior art exists, the purpose of this utility model is to provide the upward type roof ventilator of the long new structure of a kind of increasing exhaust range of scatter, life-span.

To achieve these goals, the utility model has adopted following technological scheme: the utility model provides a kind of environment protection type upward type roof extract unit, it comprises parts such as electric machine casing, impeller exhaust casing, motor and centrifugal impeller, described motor is provided with a housing outward, the electric machine casing peripheral hardware has the upwards impeller exhaust casing of air draft, centrifugal impeller is arranged in the impeller exhaust casing, transmission shaft is installed on the middle part of electric machine casing, its upper end links to each other with motor transmission shaft, the lower end links to each other with centrifugal impeller, and a cold wind suction pipe is housed on electric machine casing.

Described centrifugal impeller comprises wheel plate, reaches the more than one fin of installing at the wheel plate reverse side at the positive more than one blade of installing of wheel plate.

Be provided with drain pipe at described impeller exhaust casing downside, the collection box is housed under the drain pipe.

The utility model has been owing to adopted electric machine casing, centrifugal impeller, made exhaust casing that air upwards discharges and the cold wind suction pipe on the electric machine casing, makes the utility model upward type roof extract unit have increasing exhaust range of scatter, environmental protection, advantage such as high-efficient operation for a long time.

Description of drawings

Fig. 1 is the overall structure schematic representation of the utility model roof ventilator;

Fig. 2 is the work and the cooling principle schematic representation of the utility model roof ventilator.

Fig. 3 is the principle schematic of pollutant centrifugation and collection

The number in the figure explanation

1-electric machine casing 1A-axis hole

1B-cold air suction pipe 2-impeller exhaust casing

3-motor 4-transmission shaft

5-centrifugal impeller 5A-wheel plate

5B-blade 5C-fin

6-belt pulley 7-bearing

8-supporting frame 9-flashing

10-drain pipe 11-collects box

The airborne fluid contaminants of 12-

Embodiment

How further specify the utility model below in conjunction with accompanying drawing 1-3 realizes:

A kind of environment protection type upward type roof extract unit, be installed on the roof flashing, it comprises parts such as electric machine casing 1, impeller exhaust casing 2, motor 3 and centrifugal impeller 5, the described motor 3 outer housings 1 that are provided with, electric machine casing 1 peripheral hardware has the upwards impeller exhaust casing 2 of air draft, centrifugal impeller 5 is arranged in the impeller exhaust casing 2, transmission shaft 4 is installed on the middle part of electric machine casing 1, its upper end links to each other with motor transmission shaft by belt pulley 6, the lower end links to each other with centrifugal impeller 5, and the centre is fixed on the supporting frame 8 by two bearings 7.Centrifugal impeller 5 comprises wheel plate 5A, in the front of wheel plate 5A (below among the figure being) a plurality of blade 5B are installed, its back side (being top among the figure) is equipped with a plurality of fin 5C, be evenly distributed on the back side of centrifugal impeller wheel plate, and a cold wind suction pipe 1B is housed on electric machine casing 1, at impeller exhaust casing 2 downsides one drain pipe 10 is housed, is equipped with under the drain pipe and collects box 11 (as shown in Figure 1).

The working procedure of the utility model upward type roof extract unit and principle following (as shown in Figure 2):

1, owing to the employing centrifugal impeller, thereby has the ability enough static pressure are provided, guaranteed the air draft effect;

2, when draught fan impeller 5 runnings, the air of being got rid of is upwards discharged the effect that reaches aforementioned rapid diffusion and prevent to be sucked by other equipment once more along exhaust casing 2;

3, also rotate simultaneously owing to being installed in centrifugal impeller wheel plate back side fin 5C all around with impeller, so form negative pressure region at the impeller back side, the formation of this negative pressure sucks the air in the upper motor housing by the axis hole 1A that transmission shaft 4 passes on the electric machine casing 1, and get rid of along with the rotation of draught fan impeller 5, shown in arrow among Fig. 2;

4, when the air in the electric machine casing 1 is discharged toward the below via axis hole, outdoor fresh cold air thereupon from the cold wind suction pipe 1B of electric machine casing 1 mend into, the flow through air-flow of motor 3 and bearing 7 of formation, thereby motor and bearing are cooled off fully, guaranteed roof ventilator of the present utility model high-efficient operation for a long time;

5, because the air of being got rid of is subjected to effectively stopping of electric machine casing 1, and the powerful centrifugal action of impeller 5, make it can not enter in the electric machine casing 1, thereby make motor 3, bearing 7, belt pulley 6 and the belt 9 of enclosure interior all not contaminated.

As shown in Figure 3, airborne fluid contaminants 12 is quickened in centrifugal impeller 5 inside and along with air-flow throws away impeller; Under powerful centrifugal action, pollutant impinges upon on the impeller exhaust casing 2 and adheres to thereon; The pollutant that sticks on the impeller exhaust casing 2 increases, and forms drop and flows down along impeller exhaust casing 2 inwalls; Contaminant fluid 12 flows out and is collected in along drain pipe 10 collects in the box 11.

In sum, the blower fan structure of the type serves as that operation steady in a long-term is laid a good foundation to improve structure as method, and reaches the purpose of environmental protection by some practical problems of the air of considering to decontaminate.

The above is preferred embodiment of the present utility model only, is not to be used for limiting scope of the present utility model, and all equalizations of doing according to the utility model change and modify, and are all the utility model claim and contain.

Claims

1, a kind of upward type roof extract unit, comprise motor, centrifugal impeller and transmission shaft, it is characterized in that: described motor is provided with a housing outward, the electric machine casing peripheral hardware has the upwards impeller exhaust casing of air draft, centrifugal impeller is arranged in the impeller exhaust casing, and transmission shaft is installed on the middle part of electric machine casing, and its upper end links to each other with motor transmission shaft, the lower end links to each other with centrifugal impeller, and a cold wind suction pipe is housed on electric machine casing.

2, a kind of upward type roof extract unit according to claim 1 is characterized in that: described centrifugal impeller comprises wheel plate, reaches the more than one fin of installing at the wheel plate reverse side at the positive more than one blade of installing of wheel plate.

3, a kind of upward type roof extract unit according to claim 1 is characterized in that: be provided with drain pipe at described impeller exhaust casing downside, the collection box is housed under the drain pipe.