CN2422571Y

CN2422571Y - Cross flow fan for ventilation

Info

Publication number: CN2422571Y
Application number: CN 99256504
Authority: CN
Inventors: 童其福
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-12-09
Filing date: 1999-12-09
Publication date: 2001-03-07
Anticipated expiration: 2009-12-09

Abstract

The utility model relates to a cross flow fan for ventilation which is suitable for families, hotels and offices. The utility model is mainly composed of a motor, a casing, a blade wheel, an air inlet, and an air outlet, wherein, the motor and the blade wheel are coaxial, the motor is arranged on the outside of the casing, and the blade wheel is arranged in the casing, the air inlet and the air outlet have the structure of radial air inlet and radial air outlet. Thereby, the utility model has the advantages of reasonable design, convenient installation and operation, and long service life of the blade wheel; the motor is not easy to be corroded, the use effect is good, the noise is small, etc.

Description

Tubular ventilator

The utility model relates to a kind of ventilation equipment, particularly a kind of tubular ventilator, and it mainly is applicable to the vented exhaust of living environment such as family, hotel and office.

Similar ventilator of the prior art comprises centrifugal and two kinds of axial-flow type.Axial fan is air inlet through hollow shaft, axially air-out, and its air quantity is big, but blast is low, and motor is perishable.And centrifugal breather is air inlet through hollow shaft, radially air-out, its structure as shown in Figure 1 and Figure 2, this ventilator is mainly by motor 1 ＇, centrifugal impeller 2 ＇ spiral cases 3 ＇ and 4 ＇, 5 ＇ form into and out of the air port, centrifugal impeller 2 ＇ directly are assemblied on the axle of motor 1 ＇, and be put in spiral case 3 ＇, motor 1 ＇ is connected with bolt with spiral case 3 ＇, forms in spiral case 3 ＇ upper sheds at 4 ＇, 5 ＇ into and out of the air port.After motor 1 energising, centrifugal impeller 2 by radially throwing to spiral case 3 ＇, makes centrifugal impeller 2 ＇ external diameters and the space between spiral case 3 ＇ in spiral case 3 ＇ form normal pressure, and is discharged by air outlet 5 ＇ of spiral case 3 ＇ under the dragging of motor 1 ＇; Simultaneously, form negative pressure at centrifugal impeller 2 ＇ internal diameters and air-breathing place, ambient atmos is drawn onto in centrifugal impeller 2 ＇ under the effect of atmospheric pressure, to replenish the gas of discharging, forms suction, exhaust process with this.But the ventilator of this structure remains in actual use in following shortcoming: 1, structural design is reasonable inadequately, the centrifugal impeller root ruptures easily, because its impeller diameter is generally more than 150 millimeters, and be directly connected on the motor shaft, centrifugal impeller when rotating at a high speed is because the gap inhomogeneities between action of centrifugal force and centrifugal impeller external diameter and the spiral case makes radial force under the effect in normal pressure, the fracture of work a period of time back root part fatiguability; 2, since impeller with motor direct connection and put into spiral case, the oil gas that air inlet sucks in the work, corrosive gas such as flue gas easily enter spiral case, also invade motor simultaneously, cause easily that motor is subjected to that burn into makes moist, short circuit etc., influence motor result of use and life-span; 4, directly open on the spiral case face owing to its air outlet, and the axial dimension of spiral case is less, has limited the size of air outlet, causes the air outlet back pressure big, air inlet suction is not enough, and its result of use is descended; Noise is bigger than normal when 5, using, influence life, study and work.

The purpose of this utility model is to overcome the above-mentioned deficiency of existing in prior technology, and a kind of reasonable in design, impeller, blade long service life, motor is not perishable and result of use is good tubular ventilator are provided.

The purpose that the utility model proposed can be achieved through the following technical solutions: this tubular ventilator comprises motor, into and out of the air port, its architectural feature is: also be provided with casing and impeller, motor is coaxial with impeller, motor is positioned at outside the casing, impeller is installed in the casing, is radially air intake, radially air-out structure into and out of the air port.

The utility model also is provided with bearing arrangement, and this bearing arrangement can be installed in a side of casing, and it is made up of bearing block, bearing cap, bearing holder (housing, cover) and bearing, and noise is low when making ventilator work thus.

The said impeller of the utility model is column type, and it rotates plate by connection blade single injection-molded by several, and impeller and the eccentric installation of casing, has improved the service life of impeller thus, and has made not frangibility of blade.

The said casing of the utility model comprises motor cabinet, Wire clips seat, capacitor seat and terminal block, and they and casing fuse, and makes that thus the design of casing is more perfect.

The utility model also can be installed airduct, and this airduct links to each other with casing, to make things convenient for air draft.

The utility model compared with prior art has the following advantages and effect: 1, reasonable in design, novelty, and impeller long service life and impeller intensity are good, not frangibility; 2, because motor is installed on outside the casing, make not corrosion-vulnerable of motor, improved the service life and the security of motor; 3, because the impeller axial dimension is unrestricted, and the axial dimension of its casing is bigger than existing ventilator, so air outlet is bigger, back pressure is little, and the air inlet air quantity is big, and suction is strong, result of use is good; 4, be provided with the rubber shaft bearing device, have and resist the uneven vibration that causes,, do not influence people's life, study and work so noise is low during work.

Description of drawings is as follows:

Fig. 1 is the front view (analysing and observe) of centrifugal breather in the prior art.

Fig. 2 is the left view of centrifugal breather of the prior art.

Fig. 3 is a front view of the present utility model.

Fig. 4 is a vertical view of the present utility model.

Fig. 5 is an A-A cutaway view of the present utility model.

Fig. 6 is that B of the present utility model is to view.

Fig. 7 is that C of the present utility model is to view (when removing motor).

Fig. 8 is an another kind of example structure schematic diagram of the present utility model.

Following the utility model will be in conjunction with the accompanying drawings, and be described in further detail by embodiment.

Embodiment one:

Referring to Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, the utility model mainly 4,5 is formed by impeller 8, casing 7, motor 1 and into and out of the air port, motor 1 is coaxial with impeller 8, motor 1 is positioned at outside the casing 7, impeller 8 is installed in the casing 7, casing 7 parts are opened wide, make air-flow can directly radially enter this ventilator, and radially air-out, making the utility model the time run into flue gas, oil gas etc. in work has corrosive gas and can enter casing 7 from air inlet 4, discharge from air outlet 5 then, motor 1 is not corroded, thereby improved the service life of motor 1.

Impeller 8 in the present embodiment is column type, passes through to connect blade 8-2 single injection-molded by a youngster rotation plate 8-1, and impeller 8 and casing 7 eccentric installations, prolonged the service life of impeller 8, and the intensity of blade 8-2 is better, and blade 8-2 is stressed less during rotation, makes its not frangibility.

The utility model casing 7 comprises motor cabinet 15, Wire clips seat 14, capacitor seat 16, reaches terminal block 17, and they and casing 7 fuse; The position of casing 7 can be set as required, can change the wind direction of suction thus.Simultaneously, because the axial dimension of impeller 8 is unrestricted, the axial dimension of casing 7 is bigger than existing ventilator, and therefore, air outlet 5 can be done bigger, and back pressure is little, and air inlet 4 air quantity are big, and suction is strong, and the result of use of ventilator is improved.

The utility model also is provided with the bearing arrangement I, and it is made with rubber, is installed in a side of casing 7, it is made up of bearing block 9, bearing cap 10, bearing holder (housing, cover) 11 and bearing 12, make ventilator have elasticity and flexibility preferably, resist the vibration that causes owing to uneven, reduced the noise of ventilator.

In addition, also airduct 6 can be installed, this airduct 6 links to each other with casing 7, with easy to exhaust.

During use, plug in, after motor 1 energising, motor 1 rotates by coupling piece 13 impeller 8, because the rotation of the high speed of impeller 8 makes air inlet 4 places produce negative pressure (being lower than atmospheric pressure), atmosphere flows into air inlet 4, again because impeller 8 and casing 7 eccentric installations, space between impeller 8 external diameters and the casing 7 enlarges gradually, and therefore the compressed normal pressure (being higher than atmospheric pressure) that produces between impeller 8 and casing 7 of atmosphere that flows into is discharged from air outlet 5.Simultaneously, because impeller 8 has forward-type blade 8-2, the axial width of blade 8-2 can be very wide, be drum-type, the both ends of the surface sealing, air-flow radially traverses along impeller 8 and flows through, air radially flows into during beginning, radially outer then the outflow, the air-flow secondary is greatly improved the radial force of blade 8-2 by the leaf road.

Embodiment two:

Referring to Fig. 8, the utility model promptly can be the structure (as embodiment one) that a motor 1 drives an impeller 8, motor 1 that also can be as shown in this embodiment drives the structure of two impellers 8, and promptly two sides at motor 1 are respectively arranged with impeller 8, and motor 1 is also coaxial with impeller 8.In like manner, also can be the structure of two motor trilobed wheels, or the like.And all the other structures and user's rule are identical with embodiment one.

Claims

1, a kind of tubular ventilator, comprise that motor reaches into and out of the air port, it is characterized in that: also be provided with casing (7) and impeller (8), motor (1) is coaxial with impeller (8), motor (1) is positioned at outside the casing (7), impeller (8) is installed in the casing (7), and (4), (5) are radially air intake, radially air-out structure into and out of the air port.

2, tubular ventilator as claimed in claim 1 is characterized in that: also be provided with bearing arrangement, this bearing arrangement (I) can be installed in a side of casing (7), and it is made up of bearing block (9), bearing cap (10), bearing holder (housing, cover) (11) and bearing (12).

3, tubular ventilator as claimed in claim 1 is characterized in that: said impeller (8) is column type, and it rotates plate (8-1) by connection impeller (8-2) single injection-molded by several, and impeller (8) is installed with casing (7) is eccentric.

4, tubular ventilator as claimed in claim 1 is characterized in that: said casing (7) comprises motor cabinet (15), Wire clips seat (14), capacitor seat (16) and terminal block (17), and they and casing (7) fuse.

5, tubular ventilator as claimed in claim 1 is characterized in that: airduct (6) also can be installed, and this airduct (6) links to each other with casing (7).