CN208534791U - A kind of diagonal flow fan with anti-corrosion function - Google Patents

Abstract

In order to solve the problems, such as that existing diagonal flow fan is not suitable for applying in the ventilation shaft containing corrosive gas, the utility model proposes a kind of diagonal flow fans with anticorrosion ability, it uses brushless motor, and brushless motor is coated completely with general-purpose plastics, it is completely isolated with corrosive gas, it ensure that brushless motor will not being corroded property gas attack.Meanwhile the design of ventilation and heat is carried out, it ensure that motor can operate normally, will not overheat；And the structure of the ventilation and heat of the utility model, additionally it is possible to while the heat of wiring board is taken away, it ensure that wiring board can work normally.In addition, the shape of the movable vane wheel of the utility model and the shape of stationary blade wheel use the design of ternary channel theory, effectively hoisting wind pressure and air quantity, wind pressure 400Pa can be can achieve, air quantity can achieve 1800m³/ h, and the wind pressure of existing diagonal flow fan only has 200Pa on the market, air quantity is only 1000m³/h。

Description

A kind of diagonal flow fan with anti-corrosion function

Technical field

The utility model relates to diagonal flow fans, more specifically, being related to a kind of diagonal flow fan with anti-corrosion function.

Background technique

Under normal circumstances, the ventilating system in laboratory or chemical plant is of crucial importance, in order to improve the efficiency of ventilation, so needing Promote the flow velocity of fluid in ventilation shaft.Since the diameter of the pipeline of ventilating system usually will not be especially big, because pipeline is straight If diameter is big, the cost of entire ventilating system will be very high, as long as so the diameter of ventilation shaft enables to wind speed air quantity to reach At the demand used, therefore the diameter of ventilation shaft is not too big.And in small ventilation shaft, in order to improve the speed of fluid Degree, needs to increase wind pressure, increases the method for wind pressure, can use centrifugal blower, but centrifugal blower installation is used to be more troublesome, And higher cost, using upper and inconvenient.

In order to solve the problems, such as that centrifugal blower is not suitable for applying in ventilation shaft, oblique flow wind is had been proposed that at present The scheme that machine is applied in ventilation shaft.The working principle of diagonal flow fan is to drive movable vane wheel using motor, then in movable vane wheel Under the action of form wind, wind enters and traveling along axial direction by the preceding extreme direction of movable vane wheel and is centrifuged transmission backward, then by with The effect of the reversed opposite stationary blade wheel of the rotation of movable vane wheel so that the fluid of centrifugal rotation and back-propagation thread is straight, become to The Linear fluid propagated afterwards, the effect for then passing through diagonal flow fan increase wind pressure and air quantity in ventilation shaft, so that logical Wind effect increases.

But general diagonal flow fan is not appropriate for using in the laboratory or chemical plant containing etchant gas.Cause In air for the exposure of motor used in general diagonal flow fan, and do not have etch-proof function, so motor makes It is shorter with the service life.

Utility model content

In order to solve problem above, the utility model proposes a kind of diagonal flow fans with anti-corrosion function.It has as follows Advantage:

1, using brushless motor, and brushless motor is coated completely with general-purpose plastics, it is completely isolated with corrosive gas, It ensure that brushless motor will not being corroded property gas attack.

2, the utility model carries out the design of ventilation and heat, ensure that electricity in the case where coating brushless motor completely Machine can operate normally, and will not overheat, it is ensured that the service life of brushless motor；And the knot of the ventilation and heat of the utility model Structure, additionally it is possible to while the heat of wiring board is taken away, it ensure that wiring board can work normally.

3, the shape of the movable vane wheel of the utility model and the shape of stationary blade wheel use the design of ternary channel theory, Neng Gouyou Effect hoisting wind pressure and air quantity, wind pressure can achieve 400Pa, and air quantity can achieve 1800m³/ h, and existing oblique flow wind on the market The wind pressure of machine only has 200Pa, and air quantity is only 1000m³/h。

4, the power for the brushless motor that the diagonal flow fan of the utility model uses is 170W, and usually used on the market at present Diagonal flow fan use brush motor, and power is 300W, therefore the diagonal flow fan of the utility model can reach energy-efficient effect Fruit.

5, control of the utility model to the brushless motor of diagonal flow fan, using slide rheostat control circuit board, route Containing the computer program for adjusting brushless motor in plate, frequency control is realized to the revolving speed of brushless motor to realize, so that tiltedly Flow fan is more energy-saving and environmentally friendly.

6, at present on the market, to realize frequency conversion, then frequency converter is all made of to the control of the motor of diagonal flow fan, but become The volume of frequency device is big, and at high cost, therefore application is more difficult；And the utility model controls motor using slide rheostat System, slide rheostat it is small in size, at low cost, cost is only 1 the percent of frequency converter, therefore application prospect is preferable, and can be real Existing energy conservation and environmental protection.

7, the both ends of the diagonal flow fan of the utility model all have raised welding position, and the caliber with ventilation shaft Match, therefore the mode that thermofussion welding can be directlyed adopt with ventilation shaft is installed, it is easy for installation.

8, the utility model increases sound proof housing before movable vane wheel, can be effectively reduced noise, can be by noise by 85 points Shellfish is reduced to 75 decibels.

The diagonal flow fan with anti-corrosion function of the utility model comprising: bottom cover, outer cover, wiring board, the first water conservancy diversion Chamber, small impeller, brushless motor, motor shaft fixing support, motor protecting cover, inner cover, movable vane wheel, it is characterised in that: cover upper It is divided to air inlet and two ventholes containing there are two, and two air inlets are in mirror symmetry, two outlets about the central axis of outer cover Hole is in mirror symmetry about the central axis of outer cover, and air inlet and venthole are dispersed in the upper part of outer cover, air inlet and The shape of venthole is identical, and the opening shape on outer cover is " Pie " shape, two air inlets and two ventholes portion respectively inwards Extend, be connected to inner cover, allows the air in air and inner cover outside outer cover that flowing occurs and replace；In the inside of outer cover Also contain with the outside of inner cover there are four the first reinforcing rib, four first reinforcing ribs are located at adjacent air inlet and go out Between stomata, the shape of the first reinforcing rib is identical as the shape of air inlet or venthole, but the first reinforcing rib is solid construction, It cannot achieve ventilation effect；The second raised fixation hole is contained in the upper surface for the position that air inlet and venthole are connected with inner cover, Its location matches that can contain the first raised fixation hole with the marginal position of bottom cover lower surface, in the first raised fixation hole and the The combination that screw, bolt, screw rod or screw, bolt, screw rod and nut are passed through in two raised fixation holes, so that bottom cover and inner cover It being capable of sealing cover conjunction；Inner cover is divided into inner cover upper cover, inner cover lower cover, lower cover transition shoulder, and wherein inner cover upper cover is cylindrical side Face structure, and the top of inner cover upper cover and the bottom of outer cover coincide, the lower surface of inner cover upper cover passes through lower cover transition shoulder Connect with the upper surface of inner cover lower cover, lower cover transition shoulder be horizontal circular ring structure, inner cover lower cover by truncated cone-shaped side and Lower surface composition, and the diameter of the upper surface of rotary table is greater than the diameter of rotary table lower surface, the folder of frustum cone side and outer cover central axis Angle is 8, and the second centre bore is contained in the lower surface of inner cover lower cover, for the motor shaft across brushless motor；Brushless motor is located at bottom In the sealing space that lid and inner cover are formed, brushless motor is made of motor body and motor shaft, and wherein motor shaft is located at motor master The central axial position of body, and the protrusion circle that there are two protruding circular rings, are respectively located above motor body is fixed on motor shaft Ring and the protruding circular ring below motor body, the two protruding circular rings make for being attached with motor shaft fixing support It obtains brushless motor to stablize, will not move；Wherein, the main part of motor shaft fixing support one is a center containing round-meshed The circular hole of disk, the disk can match just with the protruding circular ring above motor shaft, and the edge of disk, which contains, to be upwardly extended Side, the side upwardly extended extend beyond the upper edge of inner cover, contain the cylinder extended downwardly on the inside of the edge of disk Body side surface, the cylindrical sides extended downwardly extend to the outside for touching the main body of brushless motor, and by brushless motor Body top blocks；The main part of motor shaft fixing support two is that a center contains round-meshed disk, the circular hole energy of the disk Enough just to match with the protruding circular ring below motor shaft, the edge of disk contains the side upwardly extended, the side upwardly extended Face extends to the outside with the main body of brushless motor, and the lower body part of brushless motor is blocked；Motor protecting cover, which is located at, to be fixed Between the side of bracket one upwardly extended and inner cover, and the main body of motor protecting cover is cylindrical sides, the cylindrical sides Top and motor shaft fixing support one surcurrent side upper surface maintain an equal level, the lower part of the cylindrical sides with it is brushless The lower surface of the main body of motor maintains an equal level, and the outside of the cylindrical sides contains there are two symmetrical the second reinforcing rib of "eight" shape, the The outer wall of the main body with a thickness of motor protecting cover of two reinforcing ribs is at a distance from the inner wall of inner cover；First diversion cavity by fixed plate, Side wall and fixed column composition, wherein fixed plate is circle, and the first centre bore is contained at the center of fixed plate, and side wall is located at fixed plate Edge, and extend upwardly to the body upper of motor protecting cover maintain an equal level, three fixed columns are contained in the upper surface of fixed plate；It should The top of fixed column is used for fixing circuit board, and wiring board is connected by control line with brushless motor, includes control in wiring board The computer program of brushless motor progress stepless speed regulation；A small impeller is provided with below fixed plate, the center of small impeller is contained One center fixation hole, the center fixation hole wear the top for being fixed on the protruding circular ring of the upper surface of motor shaft of brushless motor, Namely on the top of the disk of fixed bracket one；Movable vane wheel is empty by hemispherical impeller chimney, six third reinforcing ribs, central axis Chamber, 11 arc shaped blade compositions, wherein central axis cavity is located at the position of center line of the inside of hemispherical impeller chimney, and long Degree is 3cm~6cm, and the motor shaft of central axis cavity and brushless motor inside the hemispherical impeller chimney of movable vane wheel is socketed When, sealing ring is installed on the top of central axis cavity and inner cover lower cover bottom surface the second centre bore lower part, so that it is guaranteed that logical Gas in air piping cannot be introduced into the space that bottom cover and inner cover are formed, and the internal diameter of the central axis cavity is equal to brushless motor The outer diameter of tail portion below motor shaft, six third reinforcing ribs are evenly distributed in around central axis cavity, third reinforcing rib For the planar structure that two straight lines and a camber line are constituted, wherein first straight line is for connecting central axis cavity, second directly Line is horizontal line, and for connecting hemispherical impeller chimney bottom, the outer dia of the open end of hemispherical impeller chimney is camber line 160mm, from open end to the top of hemispherical impeller chimney height be 88.5mm, the shape Wei " ヽ of arc shaped blade ", with air inlet, The shape " Pie " of venthole and the first reinforcing rib is opposite.

Further, the material of the outer cover and inner cover is general-purpose plastics, and outer cover and inner cover pass through integrated molding Processing method be prepared.

Further, the upper surface of four first reinforcing ribs, two air inlets and two ventholes is apart from outer cover The distance of upper surface be 1~3cm, the position of 1 raised~3cm is the first raised welding position on outer cover, this is first convex The surface that welding position can be welded on ventilation shaft by the way of thermofussion welding is played, it is easy for installation.

Further, the power of the brushless motor is 170W.

It further, also include slide rheostat in the outside of outer cover, slide rheostat passes through connecting line and wiring board It is attached, by slide rheostat to wiring board input control signal.

Further, the edge of slide rheostat contains third protrusion fixation hole, can pass through drivescrew, bolt, spiral shell The combined mode of bar or screw, bolt, screw rod and nut, so that slide rheostat is fixed with outer cover.

It further, also include an adjusting knob on slide rheostat.

Further, at the position at the top of hemispherical impeller chimney of the lower section of outer cover beyond movable vane wheel, outer cover is outside Diffusion extends 118mm, and increases sound proof housing extending port, and sound proof housing is divided into upper and bottom section, and middle and upper part subpackage is covered It is clamped in the outside of movable vane wheel, and by the inner wall of upper lobes annulus and outer cover, lower part, which is divided into, leans out hemispherical impeller The position at the top of cover is connected and fixed by the inner wall of lower lobes annulus and outer cover, wherein the lower part of sound proof housing Contain sound attenuation hole.

Further, sound attenuation hole can use the shapes such as circle, ellipse, square, diamond shape；It is more preferred, it eliminates the noise Hole is using circle, and circular diameter is 4mm, is evenly distributed with 6 circular sound attenuation holes around each round sound attenuation hole, And the distance of every two adjacent sound attenuation hole is also 4mm.

Further, in the inner wall and upper lobes annulus and lower lobes circular ring shape of the outer wall of sound proof housing and outer cover At space in also include noise elimination sponge.

Further, there is the second raised welding position in the free end of sound proof housing, the height of the second raised welding position Degree is 1~3cm, which can be welded on the surface of ventilation shaft, installation side by the way of thermofussion welding Just.

Further, the internal diameter of the second raised welding position and the first raised welding position include 100mm, 200mm, 250mm,450mm；More preferred, the internal diameter of the second raised welding position and the first raised welding position uses 250mm.

Further, the sealing ring is Teflon material.

The working principle of the diagonal flow fan with anti-corrosion function of the utility model is as follows:

Firstly, the first of the both ends of diagonal flow fan the raised welding position and/or the second raised welding position are heated, It is welded on it in ventilation shaft.Then, by the computer program for including in wiring board, control the motor shaft of brushless motor into Row rotation, to drive " ヽ on the movable vane wheel that is connected with motor shaft " shape arc shaped blade turns right, then wind driven impeller Front end is inhaled into, and the centrifugation transmission backward between inner cover and outer cover, when by being added by the air inlet of " Pie " shape, venthole, first After the stationary blade wheel that strengthening tendons are constituted, so that the wind of centrifugal rotation and back-propagation is straight by thread, become the Linear fluid of back-propagation, in The wind pressure and air quantity increased by the effect of diagonal flow fan in ventilation shaft, using the utility model movable vane wheel and into The structure for the stationary blade wheel that stomata, venthole and the first reinforcing rib are constituted, can effectively improve the wind pressure and wind in ventilation shaft Amount, wind pressure can achieve 400Pa, and air quantity can achieve 1800m³/h。

The diagonal flow fan of the utility model has the principle of anti-corrosion function are as follows: by the cladding of the complete opposing seal of brushless motor Between bottom cover and inner cover, the corrosive gas in ventilation shaft is completely cut off completely.

The working principle of the diagonal flow fan heat dissipation of the utility model are as follows: extraneous natural wind enters from the air inlet of outer cover, Since small impeller is rotated to the right by the motor shaft drive of brushless motor, so side wall of the natural wind from wiring board and the first diversion cavity Gap enter inside the first diversion cavity, radiate to wiring board, then the wind after the heat dissipation under the drive of small impeller, It moves downward, then brushless motor main body is cooled down, then always from the first centre bore of the fixed plate of the first diversion cavity Go to the bottom surface of inner cover lower cover, be passed between the outer wall of motor protecting cover and the inner wall of inner cover then up, and from air inlet It is thrown out in one exhaust vent of the adjacent counter clockwise direction arrangement in hole.By the well-designed of the utility model, although brushless Motor is coated completely, but the design of the structure of ventilation and heat is fine, ensure that brushless motor can operate normally, will not mistake Heat, it is ensured that the service life of brushless motor；The structure of the ventilation and heat of the utility model simultaneously, additionally it is possible to take away wiring board Heat ensure that wiring board can work normally.

The principle of the diagonal flow fan energy-saving ring of the utility model are as follows: use brushless motor control program, mainly pass through sliding Rheostat control circuit board, and containing the computer program for adjusting brushless motor stepless regulating in wiring board, pass through to realize Slide rheostat realizes frequency control to the revolving speed of brushless motor, so that diagonal flow fan is more energy-saving and environmentally friendly.

The principle of the diagonal flow fan noise reduction of the utility model are as follows: increase sound proof housing, and rationally design sound attenuation hole in sound proof housing Position arrangement, while among sound proof housing and outer cover increase noise elimination sponge so that can be quick in shorter distance Noise is reduced, noise is enabled to be reduced to 75 decibels from 85 decibels.

Detailed description of the invention

Fig. 1 is the perspective view at first visual angle of the diagonal flow fan of the utility model.

Fig. 2 is the perspective view at second visual angle of the diagonal flow fan of the utility model.

Fig. 3 is the face the A-A cross-sectional view at second visual angle of the diagonal flow fan of the utility model.

Fig. 4 is that the diagonal flow fan of the utility model removes the structural schematic diagram of outer cover 2.

Fig. 5 is the perspective view at the third visual angle of the diagonal flow fan of the utility model.

Attached drawing will be specifically described in conjunction with specific implementation case as follows.

Specific embodiment

Case 1 is embodied:

It is as shown in Figure 1 the perspective view at first visual angle of the diagonal flow fan of the utility model, is illustrated in figure 2 practical The perspective view at second visual angle of novel diagonal flow fan is illustrated in figure 3 second view of the diagonal flow fan of the utility model The face the A-A cross-sectional view at angle, the diagonal flow fan for being illustrated in figure 4 the utility model removes the structural schematic diagram of outer cover 2, such as Fig. 5 institute It is shown as the perspective view at the third visual angle of the diagonal flow fan of the utility model.

A kind of diagonal flow fan with anti-corrosion function comprising: it is bottom cover 1, outer cover 2, wiring board 4, the first diversion cavity 5, small Impeller 6, brushless motor 7, motor shaft fixing support 8, motor protecting cover 9, inner cover 10, movable vane wheel 11, it is characterised in that: outer cover 2 Two air inlets 22 and two ventholes 23 are contained in upper part, and two air inlets 22 about outer cover 2 central axis in mirror to right Claim, two ventholes 23 are in mirror symmetry about the central axis of outer cover 2, and air inlet 22 and venthole 23 are dispersed in outside The upper part of cover 2, air inlet 22 is identical with the shape of venthole 23, and the opening shape on outer cover 2 is " Pie " shape, two into Portion extends respectively inwards for stomata 22 and two ventholes 23, is connected to inner cover 10, so that in the air and inner cover 10 outside outer cover 2 Air can occur flowing displacement；First reinforcing rib 24 there are four also containing in the inside of outer cover 2 and the outside of inner cover 10, institute Four the first reinforcing ribs 24 stated are located between adjacent air inlet 22 and venthole 23, the shape of the first reinforcing rib 24 It is identical as the shape of air inlet 22 or venthole 23, but the first reinforcing rib 24 is solid construction, cannot achieve ventilation effect；Into The second raised fixation hole 21 is contained in the upper surface for the position that stomata 22 and venthole 23 are connected with inner cover 10, can be with bottom cover The marginal position of 1 lower surface contains the location matches of the first raised fixation hole 11A, convex in the first protrusion fixation hole 11A and second The combination that screw, bolt, screw rod or screw, bolt, screw rod and nut are passed through in fixation hole 21 is played, so that bottom cover 1 and inner cover 10 being capable of sealing cover conjunction；Inner cover 10 divides for inner cover upper cover 101, inner cover lower cover 102, lower cover transition shoulder 1021, wherein on inner cover Lid 101 is cylindrical side structure, and the top of inner cover upper cover 101 and the bottom of outer cover 2 coincide, inner cover upper cover 101 Lower surface connect with the upper surface of inner cover lower cover 102 by lower cover transition shoulder 1021, lower cover transition shoulder 1021 is horizontal Circular ring structure, inner cover lower cover 102 is made of the side and lower surface of truncated cone-shaped, and the diameter of the upper surface of rotary table is greater than rotary table The angle of the diameter of lower surface, frustum cone side and 2 central axis of outer cover is 15 °, and the second center is contained in the lower surface of inner cover lower cover 102 Hole 1022, for the motor shaft 71 across brushless motor 7；Brushless motor 7 is located at the sealing space that bottom cover 1 and inner cover 10 are formed In, brushless motor 7 is made of motor body and motor shaft 71, and wherein motor shaft 71 is located at the central axial position of motor body, And protruding circular ring there are two being fixed on motor shaft, respectively it is located at the protruding circular ring 711 above motor body and is located at motor master Protruding circular ring 712 below body, the two protruding circular rings with motor shaft fixing support 8 for being attached, so that brushless motor 7 Stablize, will not move；Wherein, the main part of motor shaft fixing support 1 is that a center contains round-meshed disk, should The circular hole of disk can be matched just with the protruding circular ring 711 above motor shaft 71, and the edge of disk contains the side upwardly extended Face, the side upwardly extended extend beyond the upper edge of inner cover 10, contain the cylinder extended downwardly on the inside of the edge of disk Body side surface, the cylindrical sides extended downwardly extend to the outside for touching the main body of brushless motor 7, and by brushless motor 7 Body top block；The main part of motor shaft fixing support 2 82 is that a center contains round-meshed disk, the circle of the disk Hole can just be matched with the protruding circular ring 712 below motor shaft 71, and the edge of disk contains the side upwardly extended, this is upwards The side of extension extends to the outside with the main body of brushless motor 7, and the lower body part of brushless motor 7 is blocked；Electric motor protecting Cover 9 is located between the side upwardly extended and inner cover 10 of fixed bracket 1, and the main body of motor protecting cover 9 is cylindrical side The upper surface in face, the surcurrent side on the top and motor shaft fixing support 1 of the cylindrical sides maintains an equal level, the cylinder The lower surface of the main body of the lower part and brushless motor 7 of shape side maintains an equal level, and the outside of the cylindrical sides is containing there are two symmetrical In the second reinforcing rib of "eight" shape 91, the outer wall of the main body with a thickness of motor protecting cover 9 of the second reinforcing rib 91 and inner cover 10 The distance of wall；First diversion cavity 5 is made of fixed plate 51, side wall and fixed column 52, and wherein fixed plate 51 is round, and fixed plate The first centre bore 511 is contained at 51 center, and side wall is located at the edge of fixed plate 51, and extends upwardly to and motor protecting cover 9 Body upper maintains an equal level, and three fixed columns 52 are contained in the upper surface of fixed plate 51；The top of the fixed column 52 is used for fixing circuit board 4, wiring board 4 is connected by control line with brushless motor 7, includes that control brushless motor carries out stepless speed regulation in wiring board 4 Computer program；The lower section of fixed plate 51 is provided with a small impeller 6, and a center fixation hole 61 is contained at the center of small impeller 6, should Center fixation hole wears the top for being fixed on the protruding circular ring 711 of the upper surface of motor shaft 71 of brushless motor 7, that is, in fixation The top of the disk of bracket 1；Movable vane wheel 11 is by hemispherical impeller chimney 113, six third reinforcing ribs 115, central axis cavitys 111,11 arc shaped blades 114 form, wherein central axis cavity 111 is located at the center line of the inside of hemispherical impeller chimney 113 Position, and length is 3cm~6cm, central axis cavity 111 and brushless electricity inside the hemispherical impeller chimney 113 of movable vane wheel 11 Top and the second centre bore of inner cover lower cover bottom surface 1022 when the motor shaft of machine 7 is socketed, in central axis cavity 111 Sealing ring is installed in lower part, so that it is guaranteed that the gas in ventilation shaft cannot be introduced into the space that bottom cover 1 and inner cover 10 are formed, in this The internal diameter of mandrel cavity 111 is equal to the outer diameter of the tail portion below the motor shaft 71 of brushless motor 7, six third reinforcing ribs 115 It is evenly distributed in around central axis cavity 111, third reinforcing rib 115 is the planar junction that two straight lines and a camber line are constituted Structure, wherein first straight line is horizontal line for connecting central axis cavity, second straight line, camber line is for connecting hemispherical impeller 113 bottoms are covered, the outer dia of the open end of hemispherical impeller chimney 113 is 160mm, from open end to hemispherical impeller chimney 113 Top height be 88.5mm, the shape Wei " ヽ of arc shaped blade 114 ", with air inlet 22, venthole 23 and the first reinforcing rib 24 shape " Pie " is opposite.

The upper surface of four first 24, two air inlets 22 of reinforcing rib and two ventholes 23 is apart from outer cover 2 The distance of upper surface is 1~3cm, and the position of 1 raised~3cm is the first raised welding position 25 on outer cover 2, this is first convex The surface that welding position 25 can be welded on ventilation shaft by the way of thermofussion welding is played, it is easy for installation.

The power of the brushless motor is 170W.

The material of the outer cover and inner cover is general-purpose plastics, and outer cover and inner cover pass through integrally formed processing method It is prepared.

It also include slide rheostat 3 in the outside of outer cover 2, slide rheostat is connected by connecting line with wiring board 4 It connects, by slide rheostat to 4 input control signal of wiring board.The edge of slide rheostat 3 contains third protrusion fixation hole 32, It can be by way of the combination of drivescrew, bolt, screw rod or screw, bolt, screw rod and nut, so that slide rheostat 3 is fixed with outer cover 2；It also include an adjusting knob 31 on slide rheostat 3.

At the position at the top of hemispherical impeller chimney 113 of the lower section of outer cover 2 beyond movable vane wheel 11, outer cover 2 is to extending out It dissipates and extends 118mm, and increase sound proof housing 13 extending port, sound proof housing 13 divides for upper and bottom section, middle and upper part subpackage The outside of movable vane wheel 11 is overlayed on, and is clamped by upper lobes annulus 133 and the inner wall of outer cover 2, lower part, which is divided into, leans out half The position at the top of spherical impeller cover 113 is connected and fixed by lower lobes annulus 134 and the inner wall of outer cover 2, wherein Contain sound attenuation hole 132 in the lower part of sound proof housing 13.Sound attenuation hole 132 is using circle, and circular diameter is 4mm, each is round 6 circular sound attenuation holes are evenly distributed with around sound attenuation hole, and the distance of every two adjacent sound attenuation hole is also 4mm.Disappearing In the space that the outer wall of acoustic shell 13 and the inner wall of outer cover 2 and upper lobes annulus 133 and lower lobes annulus 134 are formed also It include noise elimination sponge.

There is the second raised welding position 131 in the free end of sound proof housing 13, the height of the second raised welding position 131 Degree is 1~3cm, which can be welded on the surface of ventilation shaft, installation by the way of thermofussion welding It is convenient.

The internal diameter of second raised welding position 131 and the first raised welding position 25 uses 250mm.

The sealing ring is Teflon material.

The working principle of the diagonal flow fan with anti-corrosion function of the utility model is as follows:

Firstly, the first of the both ends of diagonal flow fan the raised welding position 131 and/or the second raised welding position 25 are carried out Heating, is welded on it in ventilation shaft.Then, by the computer program for including in wiring board 4, brushless motor 7 is controlled Motor shaft 71 is rotated, to drive " ヽ on the movable vane wheel 11 that is connected with motor shaft 71 " shape arc shaped blade 114 turns right Dynamic, then the front end of wind driven impeller 11 is inhaled into, and the centrifugation transmission backward between inner cover 10 and outer cover 2, when by by " Pie " After the stationary blade wheel that air inlet 22, venthole 23, the first reinforcing rib 24 of shape are constituted, so that the wind quilt of centrifugal rotation and back-propagation Thread is straight, becomes the Linear fluid of back-propagation, then pass through diagonal flow fan effect increase wind pressure in ventilation shaft with Air quantity, the stationary blade wheel constituted using the movable vane wheel 11 and air inlet 22, venthole 23 and the first reinforcing rib 24 of the utility model Structure can effectively improve wind pressure and air quantity in ventilation shaft, and wind pressure can achieve 400Pa, and air quantity can achieve 1800m³/h。

The diagonal flow fan of the utility model has the principle of anti-corrosion function are as follows: by the cladding of the complete opposing seal of brushless motor Between bottom cover 1 and inner cover 10, the corrosive gas in ventilation shaft is completely cut off completely.

The working principle of the diagonal flow fan heat dissipation of the utility model are as follows: extraneous natural wind from the air inlet 22 of outer cover 2 into Enter, since small impeller is rotated to the right by the drive of motor shaft 71 of brushless motor 7, so natural wind is from wiring board 4 and the first water conservancy diversion The gap of the side wall of chamber 5 enters inside the first diversion cavity, radiates to wiring board, and then the wind after the heat dissipation is in small impeller Drive under, moved downward from the first centre bore 511 of the fixed plate 51 of the first diversion cavity 5, then to 7 main body of brushless motor into Row cooling, then gets to the bottom surface of inner cover lower cover 102, is passed to the outer wall and inner cover 2 of motor protecting cover 9 then up Inner wall between, and thrown out from the exhaust vent that the counter clockwise direction adjacent with air inlet 22 arranges.It is practical by this Novel is well-designed, although brushless motor is coated completely, the design of the structure of ventilation and heat it is fine, ensure that brushless Motor 7 can operate normally, and will not overheat, it is ensured that the service life of brushless motor 7；The ventilation and heat of the utility model simultaneously Structure, additionally it is possible to the heat for taking away wiring board 4 ensure that wiring board 4 can work normally.

The principle of the diagonal flow fan energy-saving ring of the utility model are as follows: use brushless motor control program, mainly pass through sliding 3 control circuit board 4 of rheostat, and containing the computer program for adjusting brushless motor stepless regulating in wiring board, to realize logical It crosses slide rheostat and frequency control is realized to the revolving speed of brushless motor, so that diagonal flow fan is more energy-saving and environmentally friendly.

The principle of the diagonal flow fan noise reduction of the utility model are as follows: increase sound proof housing 13, and rationally design and disappear in sound proof housing 13 The position of acoustic aperture 132 arranges, while increasing noise elimination sponge among sound proof housing 13 and outer cover 2, so that in shorter distance It is interior quickly to reduce noise, enable noise to be reduced to 75 decibels from 85 decibels.

Above-described embodiments merely represent several embodiments of the utility model, the description thereof is more specific and detailed, But it should not be understood as limiting the scope of the patent of the utility model.It should be pointed out that for the common of this field For technical staff, without departing from the concept of the premise utility, various modifications and improvements can be made, these all belong to In the protection scope of the utility model.Therefore, the scope of protection shall be subject to the appended claims for the utility model patent.

Claims (10)

1. a kind of diagonal flow fan with anti-corrosion function comprising: bottom cover (1), outer cover (2), wiring board (4), the first diversion cavity (5), small impeller (6), brushless motor (7), motor shaft fixing support (8), motor protecting cover (9), inner cover (10), movable vane wheel (11), it is characterised in that: partially contain two air inlets (22) and two ventholes (23), and two air inlets on outer cover (2) It (22) is in mirror symmetry about the central axis of outer cover (2), two ventholes (23) are in mirror image pair about the central axis of outer cover (2) Claim, and air inlet (22) and venthole (23) are dispersed in the upper part of outer cover (2), air inlet (22) and venthole (23) Shape is identical, and the opening shape on outer cover (2) is Pie shape, and two air inlets (22) and two ventholes (23) are respectively inwards Portion extends, and is connected to inner cover (10), and the air in air and inner cover (10) for allowing outer cover (2) external occurs flowing and sets It changes；Also contain in the inside of outer cover (2) and the outside of inner cover (10) there are four the first reinforcing rib (24), described four first are reinforced Muscle (24) is located between adjacent air inlet (22) and venthole (23), the shape and air inlet of the first reinforcing rib (24) (22) or the shape of venthole (23) is identical, but the first reinforcing rib (24) is solid construction, cannot achieve ventilation effect；Air inlet The second raised fixation hole (21) is contained in the upper surface for the position that hole (22) and venthole (23) are connected with inner cover (10), can The location matches for containing the first raised fixation hole (11A) with the marginal position of bottom cover (1) lower surface, in the first raised fixation hole The combination of screw, bolt, screw rod or screw, bolt, screw rod and nut is passed through in (11A) and the second raised fixation hole (21), So that bottom cover (1) and inner cover (10) being capable of sealing cover conjunctions；Inner cover (10) be divided into inner cover upper cover (101), inner cover lower cover (102), under Lid transition shoulder (1021), wherein inner cover upper cover (101) is cylindrical side structure, and the top of inner cover upper cover (101) It coincide with the bottom of outer cover (2), the lower surface of inner cover upper cover (101) passes through lower cover transition shoulder (1021) and inner cover lower cover (102) upper surface connection, lower cover transition shoulder (1021) is horizontal circular ring structure, and inner cover lower cover (102) is by truncated cone-shaped Side and lower surface composition, and the diameter of the upper surface of rotary table is greater than the diameter of rotary table lower surface, in frustum cone side and outer cover (2) The angle of mandrel is 8 °, and the second centre bore (1022) are contained in the lower surface of inner cover lower cover (102), for across brushless motor (7) Motor shaft (71)；Brushless motor (7) is located in the sealing space that bottom cover (1) and inner cover (10) are formed, and brushless motor (7) is by electricity Owner's body and motor shaft (71) are constituted, and wherein motor shaft (71) is located at the central axial position of motor body, and solid on motor shaft Fixed there are two protruding circular rings, are respectively located at protruding circular ring (711) above motor body and convex below motor body It rises annulus (712), the two protruding circular rings with motor shaft fixing support (8) for being attached, so that brushless motor (7) is steady It is fixed, it will not move；Wherein, the main part of motor shaft fixing support one (81) is that a center contains round-meshed disk, should The circular hole of disk can be matched just with the protruding circular ring (711) of motor shaft (71) above, and the edge of disk, which contains, to be upwardly extended Side, which extends beyond the upper edge of inner cover (10), containing extending downwardly on the inside of the edge of disk Cylindrical sides, which extends to the outside for touching the main body of brushless motor (7), and by nothing The body top of brush motor (7) blocks；The main part of motor shaft fixing support two (82) is that a center contains round-meshed disk, The circular hole of the disk can be matched just with the protruding circular ring (712) of motor shaft (71) below, and the edge of disk contains to be prolonged upwards The side stretched, the side upwardly extended extend to the outside of the main body of brushless motor (7), and by the master of brushless motor (7) It blocks body lower part；Motor protecting cover (9) is located between the side upwardly extended and inner cover (10) of fixed bracket one (81), and electricity The main body of machine protective cover (9) is cylindrical sides, and the top of the cylindrical sides is upward with motor shaft fixing support one (81) The upper surface for prolonging raw side maintains an equal level, and the lower surface of the main body of the lower part and brushless motor (7) of the cylindrical sides maintains an equal level, the circle The outside of cylindrical lateral surface contains there are two symmetrical the second reinforcing rib of splayed (91), and the second reinforcing rib (91) is protected with a thickness of motor The outer wall of the main body of shield (9) is at a distance from the inner wall of inner cover (10)；First diversion cavity (5) is by fixed plate (51), side wall and consolidates Fixed column (52) composition, wherein fixed plate (51) is circle, and the first centre bore (511), side wall are contained in the center of fixed plate (51) Positioned at the edge of fixed plate (51), and extend upwardly to the body upper of motor protecting cover (9) maintain an equal level, fixed plate (51) it is upper Contain three fixed columns (52) in surface；The top of the fixed column (52) is used for fixing circuit board (4), and wiring board (4) passes through control Line is connected with brushless motor (7), includes the computer program for controlling brushless motor and carrying out stepless speed regulation in wiring board (4)；Gu It is provided with below fixed board (51) small impeller (6), a center fixation hole (61), the center are contained in the center of small impeller (6) Fixation hole wears the top for being fixed on the protruding circular ring (711) of the upper surface of motor shaft (71) of brushless motor (7), that is, solid The top of the disk of fixed rack one (81)；Movable vane wheel (11) by hemispherical impeller chimney (113), six third reinforcing ribs (115), in Mandrel cavity (111), 11 arc shaped blade (114) compositions, wherein central axis cavity (111) is located at hemispherical impeller chimney (113) position of center line of inside, and length is 3cm~6cm, it is internal in the hemispherical impeller chimney (113) of movable vane wheel (11) Central axis cavity (111) and the motor shaft of brushless motor (7) when be socketed, on the top of central axis cavity (111) And sealing ring is installed in inner cover lower cover bottom surface the second centre bore (1022) lower part, so that it is guaranteed that gas in ventilation shaft can not be into Enter the space formed to bottom cover (1) and inner cover (10), the internal diameter of the central axis cavity (111) is equal to the motor of brushless motor (7) The outer diameter of tail portion below axis (71), six third reinforcing ribs (115) are evenly distributed in around central axis cavity (111), Third reinforcing rib (115) is the planar structure that two straight lines and a camber line are constituted, wherein first straight line is for connecting center Axis cavity, second straight line are horizontal line, and camber line is for connecting hemispherical impeller chimney (113) bottom, hemispherical impeller chimney (113) Open end outer dia be 160mm, from open end to the top of hemispherical impeller chimney (113) height be 88.5mm, arc The Xing Zhuan Wei ヽ shape of shape blade (114), it is opposite with the shape Pie shape of air inlet (22), venthole (23) and the first reinforcing rib (24).

2. as described in claim 1 with the diagonal flow fan of anti-corrosion function, it is characterised in that: the outer cover (2) and inner cover (10) material is general-purpose plastics, and outer cover and inner cover are prepared by integrally formed processing method.

3. as described in claim 1 with the diagonal flow fan of anti-corrosion function, it is characterised in that: four first reinforcing ribs (24), the distance of upper surface of the upper surface of two air inlets (22) and two ventholes (23) apart from outer cover (2) is 1~3cm, The position of 1 raised~3cm is the first raised welding position (25) on outer cover (2), which can The surface of ventilation shaft is welded in a manner of using thermofussion welding.

4. as described in claim 1 with the diagonal flow fan of anti-corrosion function, it is characterised in that: the power of the brushless motor For 170W.

5. as described in claim 1 with the diagonal flow fan of anti-corrosion function, it is characterised in that: also wrapped in the outside of outer cover (2) Containing slide rheostat (3), slide rheostat (3) is attached by connecting line with wiring board (4), passes through slide rheostat (3) to wiring board (4) input control signal；The edge of slide rheostat (3) contains third protrusion fixation hole (32), can pass through The combined mode of drivescrew, bolt, screw rod or screw, bolt, screw rod and nut, so that slide rheostat (3) and outer It is fixed to cover (2)；It also include an adjusting knob (31) on slide rheostat (3).

6. as described in claim 1 with the diagonal flow fan of anti-corrosion function, it is characterised in that: exceed in the lower section of outer cover (2) At the position at the top of the hemispherical impeller chimney (113) of movable vane wheel (11), outer cover (2) extends 118mm to external diffusion, and is extending Port increases sound proof housing (13), and sound proof housing (13) is divided into upper and bottom section, and middle and upper part subpackage overlays on movable vane wheel (11) Outside, and be clamped by upper lobes annulus (133) and the inner wall of outer cover (2), lower part, which is divided into, leans out hemispherical impeller chimney (113) position at top is connected and fixed by lower lobes annulus (134) and the inner wall of outer cover (2), wherein eliminating the noise Contain sound attenuation hole (132) in the lower part of cover (13)；Sound attenuation hole (132) is using circle, and circular diameter is 4mm, each circle 6 circular sound attenuation holes are evenly distributed with around shape sound attenuation hole, and the distance of every two adjacent sound attenuation hole is also 4mm.

7. as claimed in claim 6 with anti-corrosion function diagonal flow fan, it is characterised in that: sound proof housing (13) outer wall with It also include to disappear in the space that the inner wall and upper lobes annulus (133) of outer cover (2) are formed with lower lobes annulus (134) Sound sponge.

8. as claimed in claim 6 with the diagonal flow fan of anti-corrosion function, it is characterised in that: in the free end of sound proof housing (13) Height with the second raised welding position (131), the second raised welding position (131) is 1~3cm, the second protrusion weldering Socket part position (131) can be welded on the surface of ventilation shaft by the way of thermofussion welding.

9. as claimed in claim 8 with the diagonal flow fan of anti-corrosion function, it is characterised in that: the second raised welding position (131) and the internal diameter of the first raised welding position (25) uses 250mm.

10. as described in claim 1 with the diagonal flow fan of anti-corrosion function, it is characterised in that: the sealing ring is iron fluorine Imperial material.