CN108869333A - Helical blade air pressing type centrifugal blower - Google Patents
Helical blade air pressing type centrifugal blower Download PDFInfo
- Publication number
- CN108869333A CN108869333A CN201810778785.3A CN201810778785A CN108869333A CN 108869333 A CN108869333 A CN 108869333A CN 201810778785 A CN201810778785 A CN 201810778785A CN 108869333 A CN108869333 A CN 108869333A
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- China
- Prior art keywords
- impeller
- plate
- air
- diffuser
- end plate
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
- F04D17/06—Helico-centrifugal pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/26—Rotors specially for elastic fluids
- F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
- F04D29/281—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/26—Rotors specially for elastic fluids
- F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
- F04D29/30—Vanes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
- F04D29/422—Discharge tongues
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
- F04D29/4226—Fan casings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/44—Fluid-guiding means, e.g. diffusers
- F04D29/441—Fluid-guiding means, e.g. diffusers especially adapted for elastic fluid pumps
- F04D29/444—Bladed diffusers
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The present invention is a kind of helical blade air pressing type centrifugal blower, is related to a kind of centrifugal blower, including support component, diffuser, wheel member.When the centrifugal blower is run, motor-driven impeller rotation, under the influence of centrifugal force, air-flow is accelerated during flowing along spiral impeller channel, then air-flow slows down for the first time in the gap passage of diffuser and is pressurized, and the kinetic energy that impeller passes to air-flow is changed into potential energy, air-flow enters the spiral case Inner chamber of support component, air-flow slows down again in spiral case Inner chamber to be pressurized, and high pressure draught is generated.Spiral impeller channel arranges that the air inlet of the centrifugal blower along the radial direction of centrifugal blower, can make full use of the negative pressure that impeller channel locally generates and increases the air flow rate of air inlet, and ensures continuous, stable delivery air.The centrifugal blower has the advantages that axial length is unrestricted, output gas flow pressure is larger, efficiency is higher.
Description
Technical field
The present invention is a kind of helical blade air pressing type centrifugal blower, is related to a kind of centrifugal blower, more particularly to one kind
Using helical blade, axial length is unrestricted, has the centrifugal blower of diffuser.
Background technique
Common blower type has axial flow blower, cross flow fan, centrifugal blower in household appliances.Its typical application product
Example is respectively, using the vertical fan of axial flow blower, using the kitchen ventilator of centrifugal blower, using the air conditioner chamber of cross flow fan
Interior machine.The characteristics of axial flow blower is that flow is larger, pressure is lower, noise is larger.The structure of axial flow blower is simple.
The characteristics of cross flow fan is that moderate flow, moderate pressure, noise are smaller.Cross flow fan axial length is unrestricted,
Air outlet air-flow along cross flow fan axial distribution uniform.Compared with axial flow blower, the air-flow of cross flow fan runs through impeller
Air-flow can be transported to larger distance under low noise conditions by the effect of blade power twice by flowing, air-flow.Cross flow fan
Air-flow force to turn back in impeller, therefore the pressure loss is larger, efficiency is lower.Cross-flow fan impeller uses forward-type blade.
The characteristics of centrifugal blower is that flow is smaller, pressure is higher, noise is smaller.The air inlet of centrifugal blower is along centrifugation wind
The axial arrangement of machine, therefore centrifugal blower axial length is restricted.Centrifugal blower is added air-flow using high-speed rotating impeller
Speed, air-flow slow down in the spiral case inner cavity of centrifugal blower and change flow direction, and kinetic energy is made to be converted into potential energy, generate high pressure draught.Centrifugation
Fan efficiency is higher.Centrifugal blower fan blade wheel has forward-type blade, radial vane, backward type blade three types.
In conclusion the pressure of cross flow fan, up for improving, the axial length of centrifugal blower is restricted, household electrical appliances market
Need that a kind of axial length is unrestricted, output gas flow pressure is larger, the higher blower technology of efficiency.Applied to small gas wheel
The centrifugal-flow compressor of machine is made of air intake duct, impeller, diffuser, outlet spiral case.Diffuser generally uses vane type.Air-flow is first
Impeller is first imported by air intake duct, air-flow is accelerated by impeller blade, then subtracts in gap passage of the air-flow between diffuser vane
The kinetic energy that impeller blade passes to air-flow is converted into potential energy by speed.Centrifugal-flow compressor is compared with centrifugal blower, more expansions
Depressor, there is relative motion between impeller blade and diffuser vane, air-flow slows down in the gap passage between diffuser vane
Pressurization, the stream pressure for exporting centrifugal-flow compressor are far longer than the stream pressure of centrifugal blower output.If there is a kind of axis
To the unrestricted blower technology of length, and combine gap passage of the air-flow of centrifugal-flow compressor between diffuser vane
The technology of middle pressurization of slowing down, then the blower technology can satisfy household electrical appliances market demand.
Summary of the invention
The purpose of the present invention is overcoming the disadvantage that the common cross flow fan pressure loss is larger, efficiency is lower, and overcome general
The shortcomings that logical centrifugal blower axial length is restricted, provide it is a kind of have axial length is unrestricted, output gas flow pressure compared with
Greatly, the higher helical blade air pressing type centrifugal blower of efficiency.Embodiment of the present invention is as follows：
The centrifugal blower includes support component, diffuser, wheel member.Diffuser is mounted on support component inner cavity, impeller portion
Part is mounted on diffuser inner cavity, and motor is mounted on support component axial direction one end.When the centrifugal blower is run, motor drive
The impeller of wheel member rotates, under the influence of centrifugal force, during air-flow is flowed along the spiral impeller channel of impeller
Accelerated, then air-flow slows down pressurization in the gap passage of diffuser, and the kinetic energy that impeller passes to air-flow is changed into potential energy,
Air-flow enters the spiral case Inner chamber of support component, and air-flow slows down again in spiral case Inner chamber to be pressurized, and generates high pressure draught.
The diffuser connecting plate of several Ω shapes, the song of two neighboring diffuser connecting plate is axially distributed in diffuser
There are several diffuser vanes between line segment part, diffuser vane is forward-type multiple fins shaped blade, two neighboring diffuser leaf
It is gap passage between piece.It is installing web plate two, installation muscle respectively between the straight length portion of two neighboring diffuser connecting plate
Plate one, installing web plate two, installing web plate one have several bolts hole, installing web plate one and an adjacent diffuser vane respectively
Between be closed guard.
Support component includes base, side plate one, axle sleeve one, side plate two, axle sleeve two.Axle sleeve one, axle sleeve two are cylindrical, axis
It is sleeve central bore among set one, two axial end face of axle sleeve.
Base axial ends is base end plate one, base end plate two respectively.Base end plate one is in rectangle, in base end plate one
Between be pilot hole, have several bolts hole around base end plate one.Base end plate two is in rectangle, is assembly among base end plate two
There are several bolts hole in hole around base end plate two.It is spiral case plate among base, spiral case plate top half cross sectional shape is spiral
Line or involute, spiral case plate lower half portion cross sectional shape are the tangent line of helix or the tangent line of involute.Spiral case plate lower end with
One upper end of front panel links together, and spiral case plate upper end links together with fixed two right side one end of gusset, and fixed gusset two is left
Side one end links together with squab panel lower end.Two lower end of volute tongue plate links together with one left side one end of volute tongue plate, volute tongue plate
Two sections are arc-shaped, and the angle between volute tongue plate two and volute tongue plate one is at an acute angle, one right side one end of volute tongue plate and front panel two
Lower end links together, and two upper end of volute tongue plate links together with fixed one left side one end of gusset.Fixed gusset two, fixed gusset
One has several bolts hole respectively.Squab panel, fixed gusset two, fixed gusset one, spiral case plate, front panel one, front panel two, snail
Hyoplastron one, volute tongue plate two both ends link together respectively with base end plate one, two axially inner side of base end plate.
The centrifugal blower assemble when, the curved section of diffuser be partially installed on base spiral case plate and volute tongue plate two it
Between, wheel member passes through the pilot hole of base end plate one or the pilot hole across base end plate two, and wheel member is mounted on
Diffuser inner cavity.Spiral case plate, volute tongue plate two, base end plate one, constitutes semi-enclosed spiral case between base end plate two at volute tongue plate one
Inner chamber.Spiral case Inner chamber is air outlet close to one end of front panel one, front panel two.Squab panel, fixed gusset two, volute tongue plate two,
Volute tongue plate one, base end plate one, constitutes semi-enclosed air inlet Inner chamber between base end plate two at front panel two.It is close to enter the wind Inner chamber
Squab panel, front panel two one end be air inlet.
Side plate one is in rectangle, has the side plate boss one of annular among the axial one end of side plate one, is side among side plate boss one
There is axle sleeve mounting groove one in board shaft hole among the axial other end of side plate one, and axle sleeve one is mounted in the axle sleeve mounting groove one of side plate one,
There are several bolts hole around side plate one.Support component is each passed through several bolts the bolt hole of side plate one in assembly
With the bolt hole of the base end plate one of base, side plate one is made to be mounted on the axially external surface of the base end plate one of base.Side plate
Two be in rectangle, has the side plate boss two of annular among the axial one end of side plate two, is side plate axis hole, side plate two among side plate boss two
There is axle sleeve mounting groove two among the axial other end, axle sleeve two is mounted in the axle sleeve mounting groove two of side plate two, is had around side plate two
Several bolts hole.Support component is each passed through several bolts the bolt hole of side plate two and the base of base in assembly
The bolt hole of end plate two makes side plate two be mounted on the axially external surface of the base end plate two of base.
Wheel member includes impeller, impeller end plate two, space washer two, shaft two, shaft one, space washer one, impeller
End plate one.Shaft one, shaft two are cylindrical.Space washer one, space washer two in a ring, space washer one, space washer
It is washer center hole among two axial end faces.
It is cylindrical circular impeller connecting cylinder, the radially-outer surface difference of impeller connecting cylinder axial ends among impeller is radial
There is impeller screw hole, impeller connecting cylinder radial outside is evenly equipped with several impeller blades, and impeller blade is twist, two neighboring
It is helical impeller channel between impeller blade.
Impeller end plate one is end plate axis hole, the radial appearance of impeller end plate one among one axial end face of impeller end plate in a ring
There is radial internal thread hole in face.Impeller end plate two is end plate axis hole, impeller end plate among two axial end face of impeller end plate in a ring
Two radially-outer surfaces have radial internal thread hole.
Wheel member is welded on the radially-outer surface of impeller end plate one one on the right side of the impeller connecting cylinder of impeller in assembly
Radially inner side is held, and is aligned the internal thread hole of impeller end plate one and the impeller screw hole of one end on the right side of impeller connecting cylinder,
One one end of shaft is mounted in the end plate axis hole of impeller end plate one, screw is passed through the impeller screw of one end on the right side of impeller connecting cylinder
Hole, and screw is mounted in the internal thread hole of impeller end plate one, it is fixed together shaft one with impeller end plate one,
And so that the other end of shaft one is located at the axially external of impeller end plate one, the washer center hole of space washer one is mounted on and is turned
The radial outside of axis one, and contact one left end face of space washer with one right end face of impeller end plate and be installed together.?
The radially-outer surface of impeller end plate two is welded on one end radially inner side on the left of the impeller connecting cylinder of impeller, and makes impeller end plate two
Internal thread hole be aligned with the impeller screw hole of one end on the left of impeller connecting cylinder, two one end of shaft is mounted on impeller end plate two
In end plate axis hole, screw is passed through the impeller screw hole of one end on the left of impeller connecting cylinder, and screw is mounted on impeller end plate
It in two internal thread hole, is fixed together shaft two with impeller end plate two, and the other end of shaft two is made to be located at leaf
The axially external of end plate two is taken turns, the washer center hole of space washer two is mounted on the radial outside of shaft two, and make to position
Two right end face of washer is contacted with two left end face of impeller end plate and is installed together.
The centrifugal blower is partially installed on the curved section of diffuser the spiral case plate and volute tongue plate two of base in assembly
Between, and the installing web plate of diffuser two is mounted on two upper surface of fixation gusset of base, the installing web plate of diffuser
One is mounted on one upper surface of fixation gusset of base.Several bolts are each passed through the bolt hole of the installing web plate two of diffuser
With the bolt hole of the fixation gusset two of base, several bolts are each passed through the bolt hole and machine of the installing web plate one of diffuser
The bolt hole of the fixation gusset one of seat, is fixed together diffuser with base.Wheel member is passed through base end plate one
Pilot hole or pilot hole across base end plate two, wheel member is mounted on diffuser inner cavity.Keep one diameter of shaft outside
Surface middle position is mounted in the sleeve central bore of axle sleeve one, and makes side of the axially external one end of shaft one across side plate one
Board shaft hole makes the axially external one end of shaft one be located at side plate one axially external.Two radially-outer surface middle position of shaft is installed
In the sleeve central bore of axle sleeve two, and the axially external one end of shaft two is made to pass through the side plate axis hole of side plate two, makes shaft two
It is axially external that axially external one end is located at side plate two.The shaft of motor is linked together with shaft one, alternatively, motor
Shaft link together with shaft two.
The centrifugal blower operational process is：
When the centrifugal blower is run, motor drives impeller to revolve along impeller direction of rotation by shaft one, impeller end plate one
Turn, alternatively, motor drives impeller to rotate along impeller direction of rotation by shaft two, impeller end plate two.The impeller leaf of impeller
There is relative motion between piece and the diffuser vane of diffuser.When impeller is rotated along impeller direction of rotation, make to enter the wind in Inner chamber
Air-flow enter in the impeller channel of impeller, under the influence of centrifugal force, the air-flow in impeller channel is along impeller gas transmission direction
Flowing, air-flow are accelerated during flowing along the spiral impeller channel of impeller, and then air-flow enters the gap of diffuser
In channel, air-flow slows down pressurization in the gap passage of diffuser, and the kinetic energy that impeller passes to air-flow is changed into potential energy, impeller
Blade and diffuser vane carry out first time pressurization to air-flow, and air-flow enters the spiral case Inner chamber of support component, and spiral case Inner chamber is cut
Area is gradually increased, and air-flow slows down again in spiral case Inner chamber to be pressurized, and the air-flow in spiral case Inner chamber is along air outlet airflow direction
It is discharged from air outlet.Air-flow can locally generate negative pressure in impeller channel in the spiral impeller channel high speed flowing of impeller
Power, the negative pressure further attract the air-flow in air inlet Inner chamber to enter in the impeller channel of impeller.Closed guard prevents impeller stream
Air-flow in road is back to air inlet Inner chamber under the influence of centrifugal force.
When the centrifugal blower is run, motor-driven impeller rotation, under the influence of centrifugal force, air-flow is along spiral shape
Impeller channel flowing during be accelerated, then air-flow in the gap passage of diffuser for the first time slow down pressurization, leaf
The kinetic energy that wheel passes to air-flow is changed into potential energy, and air-flow enters the spiral case Inner chamber of support component, air-flow in spiral case Inner chamber again
Slow down and be pressurized, generates high pressure draught.Spiral impeller channel makes the air inlet of the centrifugal blower along the diameter of centrifugal blower
To arrangement, can make full use of the negative pressure that impeller channel locally generates and increase the air flow rate of air inlet, and ensure it is continuous,
Stable delivery air.The centrifugal blower is with axial length is unrestricted, output gas flow pressure is larger, efficiency is higher excellent
Point.
Detailed description of the invention
Fig. 1 is the axonometric drawing of the centrifugal blower.
Fig. 2 is the isometric cutaway view of the centrifugal blower.Along axis cutting.
Fig. 3 is the isometric cutaway view that base, diffuser are installed together.
Fig. 4 is the axonometric drawing of diffuser.
Fig. 5 is the isometric cutaway view of the centrifugal blower.Axially section cutting.
Fig. 6 is the isometric cutaway view of base.
Fig. 7 is the isometric cutaway view of diffuser.
Fig. 8 is the axonometric drawing of diffuser.
Fig. 9 is the isometric cutaway view that side plate two, axle sleeve two are installed together.
Figure 10 is the isometric cutaway view that side plate one, axle sleeve one are installed together.
Figure 11 is the isometric cutaway view of wheel member.
Figure 12 is the axonometric drawing of impeller.
Figure 13 is the isometric cutaway view that impeller end plate two, space washer two, shaft two are installed together.
Figure 14 is the isometric cutaway view that impeller end plate one, space washer one, shaft one are installed together.
Air flow path schematic diagram when Figure 15 is centrifugal blower operation.
Base 1, diffuser 2, impeller 3, impeller end plate 24, space washer 25, axle sleeve 26, shaft two are labeled in figure
7, side plate 28, screw 9, bolt hole 10, air inlet airflow direction 11, air inlet 12, shaft 1, axle sleeve 1, space washer
One 15, side plate 1, impeller end plate 1, air outlet 18, air outlet airflow direction 19, front panel 1, volute tongue plate 1, snail
It is hyoplastron 2 22, spiral case plate 23, base end plate 2 24, pilot hole 25, squab panel 26, fixed gusset 2 27, base end plate 1, preceding
Coaming plate 2 29, diffuser connecting plate 31, installing web plate 2 32, installing web plate 1, closed guard 34, expands fixed gusset 1
Depressor blade 35, gap passage 36, side plate boss 2 37, side plate boss 1, impeller screw hole 39, impeller channel 40, impeller
Blade 41, impeller connecting cylinder 42, impeller gas transmission path 43, impeller gas transmission direction 44, internal thread hole 45, spiral case Inner chamber 46, air-flow
Path 47, air inlet Inner chamber 48, impeller direction of rotation 49.
Specific embodiment
The present invention is further discussed below with reference to the accompanying drawing.
Referring to Fig.1, Fig. 2, Figure 12, Figure 15, the centrifugal blower include support component, diffuser 2, wheel member.Diffusion
Device 2 is mounted on support component inner cavity, and wheel member is mounted on 2 inner cavity of diffuser, and motor is mounted on support component axial direction one end.
When the centrifugal blower is run, the impeller 3 of motor-driven impeller component rotates, and under the influence of centrifugal force, air-flow is along leaf
It takes turns during 3 spiral impeller channels 40 flow and is accelerated, then air-flow slows down increasing in the gap passage 36 of diffuser 2
The kinetic energy that impeller 3 passes to air-flow, is changed into potential energy, air-flow enters the spiral case Inner chamber 46 of support component, and air-flow is in spiral case by pressure
Slow down again in Inner chamber 46 and be pressurized, generates high pressure draught.
Referring to figs. 1 to Figure 14, diffuser 2 is axially distributed with the diffuser connecting plate 31 of several Ω shapes, and adjacent two
There are several diffuser vanes 35 between the curved section part of a diffuser connecting plate 31, diffuser vane 35 is forward-type multiple wing
Shape blade is gap passage 36 between two neighboring diffuser vane 35.The straightway portion of two neighboring diffuser connecting plate 31
/ it is installing web plate 2 32, installing web plate 1 respectively, installing web plate 2 32, installing web plate 1 have several spiral shells respectively
Keyhole 10 is closed guard 34 between installing web plate 1 and an adjacent diffuser vane 35.
Support component includes base 1, side plate 1, axle sleeve 1, side plate 28, axle sleeve 26.Axle sleeve 1, axle sleeve 26
It is cylindrical, it is sleeve central bore among axle sleeve 1,26 axial end face of axle sleeve.
1 axial ends of base is base end plate 1, base end plate 2 24 respectively.Base end plate 1 is in rectangle, base
It is pilot hole 25 among end plate 1, there are several bolts hole 10 around base end plate 1.Base end plate 2 24 is in rectangle, machine
It is pilot hole 25 among seat end plate 2 24, there are several bolts hole 10 around base end plate 2 24.It is spiral case plate among base 1
23,23 top half cross sectional shape of spiral case plate is helix or involute, and 23 lower half portion cross sectional shape of spiral case plate is helix
Tangent line or involute tangent line.23 lower end of spiral case plate links together with one 20 upper end of front panel, 23 upper end of spiral case plate with
Fixed 2 27 right side one end of gusset links together, and fixed 2 27 left side one end of gusset links together with 26 lower end of squab panel.
2 22 lower end of volute tongue plate links together with one 21 left side one end of volute tongue plate, and 2 22 section of volute tongue plate is arc-shaped, volute tongue plate two
Angle between 22 and volute tongue plate 1 is at an acute angle, and one 21 right side one end of volute tongue plate links together with 2 29 lower end of front panel,
2 22 upper end of volute tongue plate links together with fixed one 30 left side one end of gusset.Fixed gusset 2 27, fixed gusset 1 are distinguished
There are several bolts hole 10.Squab panel 26, fixed gusset 2 27, fixed gusset 1, spiral case plate 23, front panel 1, front wall
Plate 2 29, volute tongue plate 1, volute tongue plate 2 22 both ends respectively with base end plate 1,2 24 axially inner side of base end plate
It links together.
When the centrifugal blower assembles, the curved section of diffuser 2 is partially installed on the spiral case plate 23 and volute tongue plate of base 1
Between 2 22, wheel member passes through the pilot hole 25 of base end plate 1 or the pilot hole 25 across base end plate 2 24,
Wheel member is mounted on 2 inner cavity of diffuser.Spiral case plate 23, volute tongue plate 1, volute tongue plate 2 22, base end plate 1, base end
Semi-enclosed spiral case Inner chamber 46 is constituted between plate 2 24.Spiral case Inner chamber 46 is close to one end of front panel 1, front panel 2 29
Air outlet 18.Squab panel 26, fixed gusset 2 27, volute tongue plate 2 22, volute tongue plate 1, front panel 2 29, base end plate 1,
Semi-enclosed air inlet Inner chamber 48 is constituted between base end plate 2 24.Enter the wind Inner chamber 48 close to squab panel 26, front panel 2 29 one
End is air inlet 12.
Side plate 1 is in rectangle, there is the side plate boss 1 of annular, side plate boss 1 among the axial one end of side plate 1
Centre is side plate axis hole, has axle sleeve mounting groove one among the axial other end of side plate 1, axle sleeve 1 is mounted on side plate 1
In axle sleeve mounting groove one, there are several bolts hole 10 around side plate 1.Support component distinguishes several bolts in assembly
Across the bolt hole 10 of the base end plate 1 of the bolt hole 10 and base 1 of side plate 1, side plate 1 is made to be mounted on base 1
The axially external surface of base end plate 1.Side plate 28 is in rectangle, there is the side plate boss of annular among the axial one end of side plate 28
2 37, it is side plate axis hole among side plate boss 2 37, has axle sleeve mounting groove two among the axial other end of side plate 28, axle sleeve 26 is pacified
In the axle sleeve mounting groove two of side plate 28, there are several bolts hole 10 around side plate 28.Support component assembly when, if
Dry bolt is each passed through the bolt hole 10 of the bolt hole 10 of side plate 28 and the base end plate 2 24 of base 1, pacifies side plate 28
Mounted in the axially external surface of the base end plate 2 24 of base 1.
Wheel member includes impeller 3, impeller end plate 24, space washer 25, shaft 27, shaft 1, space washer one
15, impeller end plate 1.Shaft 1, shaft 27 are cylindrical.Space washer 1, space washer 25 in a ring, position
It is washer center hole among washer 1,25 axial end face of space washer.
It is cylindrical circular impeller connecting cylinder 42, the radial appearance of 42 axial ends of impeller connecting cylinder among impeller 3 is radial
There is impeller screw hole 39 in face respectively, and 42 radial outside of impeller connecting cylinder is evenly equipped with several impeller blades 41, and impeller blade 41 is in
Spiral shape is helical impeller channel 40 between two neighboring impeller blade 41.
Impeller end plate 1 is end plate axis hole, one 17 diameter of impeller end plate among one 17 axial end face of impeller end plate in a ring
Exterior surface has radial internal thread hole 45.Impeller end plate 24 is end plate axis among 24 axial end face of impeller end plate in a ring
Hole, 24 radially-outer surface of impeller end plate have radial internal thread hole 45.
Wheel member is welded on the radially-outer surface of impeller end plate 1 the impeller connecting cylinder 42 of impeller 3 in assembly
Right side one end radially inner side, and make the internal thread hole 45 of impeller end plate 1 and the impeller spiral shell of 42 right side one end of impeller connecting cylinder
Nail hole 39 is aligned, and one 13 one end of shaft is mounted in the end plate axis hole of impeller end plate 1, and screw 9 is passed through impeller connecting cylinder
The impeller screw hole 39 on 42 right sides one end, and screw 9 is mounted in the internal thread hole 45 of impeller end plate 1, make shaft one
13 are fixed together with impeller end plate 1, and the axis for making the other end of shaft 1 be located at impeller end plate 1 is outside
Side, is mounted on the washer center hole of space washer 1 radial outside of shaft 1, and makes one 15 left side of space washer
End face contacts with one 17 right end face of impeller end plate and is installed together.The radially-outer surface of impeller end plate 24 is welded on impeller 3
42 left side one end radially inner side of impeller connecting cylinder, and keep the internal thread hole 45 of impeller end plate 24 and impeller connecting cylinder 42 left
The impeller screw hole 39 of side one end is aligned, and 27 one end of shaft is mounted in the end plate axis hole of impeller end plate 24, screw 9 is worn
The impeller screw hole 39 of 42 left side one end of impeller connecting cylinder is crossed, and screw 9 is mounted on the internal thread hole 45 of impeller end plate 24
In, it is fixed together shaft 27 with impeller end plate 24, and the other end of shaft 27 is made to be located at impeller end plate 24
It is axially external, the washer center hole of space washer 25 is mounted on the radial outside of shaft 27, and make space washer 25
Right end face is contacted with 24 left end face of impeller end plate and is installed together.
The centrifugal blower is partially installed on the curved section of diffuser 2 the spiral case plate 23 and volute tongue of base 1 in assembly
Between plate 2 22, and the installing web plate of diffuser 22 32 is mounted on 2 27 upper surface of fixation gusset of base 1, diffusion
The installing web plate 1 of device 2 is mounted on one 30 upper surface of fixation gusset of base 1.Several bolts are each passed through diffuser 2
Installing web plate 2 32 bolt hole 10 and base 1 fixation gusset 2 27 bolt hole 10, several bolts are each passed through
The bolt hole 10 of the fixation gusset 1 of the bolt hole 10 and base 1 of the installing web plate 1 of diffuser 2, makes diffuser 2 and machine
Seat 1 is fixed together.Wheel member is passed through the pilot hole 25 of base end plate 1 or across base end plate 2 24
Wheel member is mounted on 2 inner cavity of diffuser by pilot hole 25.One 13 radially-outer surface middle position of shaft is set to be mounted on axle sleeve one
In 14 sleeve central bore, and the axially external one end of shaft 1 is made to pass through the side plate axis hole of side plate 1, makes shaft 1
It is axially external that axially external one end is located at side plate 1.27 radially-outer surface middle position of shaft is set to be mounted on the axis of axle sleeve 26
It covers in centre bore, and the axially external one end of shaft 27 is made to pass through the side plate axis hole of side plate 28, make shaft 27 axially external one
It is axially external that end is located at side plate 28.The shaft of motor is linked together with shaft 1, alternatively, the shaft of motor
It links together with shaft 27.
Referring to Fig.1, Fig. 2, Figure 12, Figure 15, the centrifugal blower operational process are：
When the centrifugal blower is run, motor drives impeller 3 along impeller rotation side by shaft 1, impeller end plate 1
To 49 rotations, alternatively, motor drives impeller 3 to rotate along impeller direction of rotation 49 by shaft 27, impeller end plate 24.Leaf
There is relative motion between the impeller blade 41 of wheel 3 and the diffuser vane 35 of diffuser 2.Impeller 3 is along impeller direction of rotation 49
When rotation, enter the air-flow entered the wind in Inner chamber 48 in the impeller channel 40 of impeller 3, under the influence of centrifugal force, impeller channel
Air-flow in 40 is flowed along impeller gas transmission direction 44, during air-flow is flowed along the spiral impeller channel 40 of impeller 3
Accelerated, then air-flow enters in the gap passage 36 of diffuser 2, and air-flow slows down pressurization in the gap passage 36 of diffuser 2,
The kinetic energy that impeller 3 passes to air-flow is changed into potential energy, impeller blade 41 and diffuser vane 35, first time increasing is carried out to air-flow
Pressure, air-flow enter the spiral case Inner chamber 46 of support component, and the sectional area of spiral case Inner chamber 46 is gradually increased, and air-flow is in spiral case Inner chamber 46
Slow down again and be pressurized, the air-flow in spiral case Inner chamber 46 is discharged along air outlet airflow direction 19 from air outlet 18.Air-flow is in impeller 3
When spiral 40 high speed of impeller channel flows, negative pressure can be generated in 40 part of impeller channel, which further inhales
The air-flow introduced in wind Inner chamber 48 enters in the impeller channel 40 of impeller 3.Closed guard 34 prevents the air-flow in impeller channel 40
It is back to air inlet Inner chamber 48 under the influence of centrifugal force.
When the centrifugal blower is run, motor-driven impeller 3 rotates, and under the influence of centrifugal force, air-flow is along spiral
The impeller channel 40 of shape is accelerated during flowing, and then air-flow slows down for the first time in the gap passage 36 of diffuser 2 and increases
The kinetic energy that impeller 3 passes to air-flow, is changed into potential energy, air-flow enters the spiral case Inner chamber 46 of support component, and air-flow is in spiral case by pressure
Slow down again in Inner chamber 46 and be pressurized, generates high pressure draught.Spiral impeller channel 40 makes the air inlet edge of the centrifugal blower
The radial arrangement of centrifugal blower, can make full use of the air-flow that the negative pressure that impeller channel 40 locally generates increases air inlet 12
Flow, and ensure continuous, stable delivery air.The centrifugal blower unrestricted, output gas flow pressure with axial length
Power is larger, the higher advantage of efficiency.
Claims (2)
1. a kind of helical blade air pressing type centrifugal blower, it is characterised in that：The centrifugal blower includes support component, diffuser
(2), wheel member；Diffuser (2) is mounted on support component inner cavity, and wheel member is mounted on diffuser (2) inner cavity, motor peace
Mounted in support component axial direction one end；The centrifugal blower run when, motor-driven impeller component impeller (3) rotation, from
Under the action of mental and physical efforts, air-flow is accelerated during flowing along impeller (3) spiral impeller channel (40), and then air-flow exists
Slow down in the gap passage (36) of diffuser (2) pressurization, the kinetic energy that impeller (3) passes to air-flow be changed into potential energy, air-flow into
Enter the spiral case Inner chamber (46) of support component, air-flow slows down again in spiral case Inner chamber (46) to be pressurized, and high pressure draught is generated；
The diffuser connecting plate (31) of several Ω shapes, two neighboring diffuser connecting plate is axially distributed in diffuser (2)
(31) there are several diffuser vanes (35) between curved section part, diffuser vane (35) is forward-type multiple fins shaped blade,
It is gap passage (36) between two neighboring diffuser vane (35)；The straight length portion of two neighboring diffuser connecting plate (31)
Between be installing web plate two (32), installing web plate one (33) respectively, installing web plate two (32), installing web plate one (33) if having respectively
Dry bolt hole (10), is closed guard (34) between installing web plate one (33) and an adjacent diffuser vane (35)；
Support component includes base (1), side plate one (16), axle sleeve one (14), side plate two (8), axle sleeve two (6)；Axle sleeve one (14),
Axle sleeve two (6) is cylindrical, is sleeve central bore among axle sleeve one (14), axle sleeve two (6) axial end face；
Base (1) axial ends is base end plate one (28), base end plate two (24) respectively；Base end plate one (28) is in rectangle,
It is pilot hole (25) among base end plate one (28), there are several bolts hole (10) around base end plate one (28)；Base end plate
Two (24) are in rectangle, are pilot hole (25) among base end plate two (24), there is several bolts hole around base end plate two (24)
(10)；It is spiral case plate (23) that base (1) is intermediate, and spiral case plate (23) top half cross sectional shape is helix or involute, spiral case
Plate (23) lower half portion cross sectional shape is the tangent line of helix or the tangent line of involute；Spiral case plate (23) lower end and front panel one
(20) upper end links together, and spiral case plate (23) upper end links together with one end on the right side of fixed gusset two (27), fixed gusset
One end links together with squab panel (26) lower end on the left of two (27)；One on the left of volute tongue plate two (22) lower end and volute tongue plate one (21)
End links together, and volute tongue plate two (22) section is arc-shaped, the angle between volute tongue plate two (22) and volute tongue plate one (21) at
Acute angle, volute tongue plate one (21) right side one end link together with front panel two (29) lower end, volute tongue plate two (22) upper end and fixation
One end links together on the left of gusset one (30)；There are several bolts hole in fixed gusset two (27), fixed gusset one (30) respectively
(10)；Squab panel (26), fixed gusset two (27), fixed gusset one (30), spiral case plate (23), front panel one (20), front panel
Two (29), volute tongue plate one (21), the both ends of volute tongue plate two (22) are axial with base end plate one (28), base end plate two (24) respectively
Inner surface links together；
When the centrifugal blower assembles, the curved section of diffuser (2) is partially installed on the spiral case plate (23) and volute tongue of base (1)
Between plate two (22), wheel member passes through the pilot hole (25) of base end plate one (28) or passes through the dress of base end plate two (24)
Wheel member is mounted on diffuser (2) inner cavity by distribution (25)；Spiral case plate (23), volute tongue plate one (21), volute tongue plate two (22),
Semi-enclosed spiral case Inner chamber (46) is constituted between base end plate one (28), base end plate two (24)；Spiral case Inner chamber (46) is by nearby
Coaming plate one (20), front panel two (29) one end be air outlet (18)；Squab panel (26), fixed gusset two (27), volute tongue plate two
(22), volute tongue plate one (21), front panel two (29), base end plate one (28), constitute between base end plate two (24) it is semi-enclosed
It enters the wind Inner chamber (48)；It is air inlet (12) that Inner chamber (48), which are entered the wind, close to one end of squab panel (26), front panel two (29)；
Side plate one (16) is in rectangle, there is the side plate boss one (38) of annular, side plate boss one among side plate one (16) axial direction one end
(38) intermediate is side plate axis hole, has axle sleeve mounting groove one among side plate one (16) the axial direction other end, axle sleeve one (14) is mounted on side
In the axle sleeve mounting groove one of plate one (16), there are several bolts hole (10) around side plate one (16)；Support component assembly when,
Several bolts are each passed through the bolt hole of the bolt hole (10) of side plate one (16) and the base end plate one (28) of base (1)
(10), side plate one (16) is made to be mounted on the axially external surface of the base end plate one (28) of base (1)；Side plate two (8) is in rectangle,
There is the side plate boss two (37) of annular among side plate two (8) axial direction one end, it is side plate axis hole, side plate that side plate boss two (37) is intermediate
There is axle sleeve mounting groove two among the axial direction other end of two (8), axle sleeve two (6) is mounted in the axle sleeve mounting groove two of side plate two (8), side
There are several bolts hole (10) around plate two (8)；Several bolts are each passed through side plate two (8) in assembly by support component
Bolt hole (10) and base (1) base end plate two (24) bolt hole (10), so that side plate two (8) is mounted on base (1)
The axially external surface of base end plate two (24)；
Wheel member includes impeller (3), impeller end plate two (4), space washer two (5), shaft two (7), shaft one (13), positioning
Washer one (15), impeller end plate one (17)；Shaft one (13), shaft two (7) are cylindrical；Space washer one (15), locating pad
It encloses two (5) in a ring, is washer center hole among space washer one (15), space washer two (5) axial end face；
It is cylindrical circular impeller connecting cylinder (42) among impeller (3) is radial, the diameter of impeller connecting cylinder (42) axial ends is outside
Surface has impeller screw hole (39) respectively, and impeller connecting cylinder (42) radial outside is evenly equipped with several impeller blades (41), impeller
Blade (41) is helical impeller channel (40) between two neighboring impeller blade (41) twist；
Impeller end plate one (17) is end plate axis hole, impeller end plate one (17) among impeller end plate one (17) axial end face in a ring
Radially-outer surface has radial internal thread hole (45)；Impeller end plate two (4) in a ring, among impeller end plate two (4) axial end face
It is end plate axis hole, impeller end plate two (4) radially-outer surface has radial internal thread hole (45)；
Wheel member is welded on the radially-outer surface of impeller end plate one (17) the impeller connecting cylinder of impeller (3) in assembly
(42) right side one end radially inner side, and make internal thread hole (45) and impeller connecting cylinder (42) right side one of impeller end plate one (17)
The impeller screw hole (39) at end is aligned, and shaft one (13) one end is mounted in the end plate axis hole of impeller end plate one (17), spiral shell
It follows closely (9) and passes through the impeller screw hole (39) of one end on the right side of impeller connecting cylinder (42), and screw (9) is mounted on impeller end plate one
(17) in internal thread hole (45), it is fixed together shaft one (13) with impeller end plate one (17), and make shaft one
(13) the other end is located at the axially external of impeller end plate one (17), and the washer center hole of space washer one (15) is mounted on and is turned
The radial outside of axis one (13), and space washer one (15) left end face is made to contact peace with impeller end plate one (17) right end face
It is fitted together；It is radial the radially-outer surface of impeller end plate two (4) to be welded on one end on the left of the impeller connecting cylinder (42) of impeller (3)
Inside, and make the internal thread hole (45) of impeller end plate two (4) and the impeller screw hole of impeller connecting cylinder (42) left side one end
(39) it is aligned, shaft two (7) one end is mounted in the end plate axis hole of impeller end plate two (4), screw (9) is connected across impeller
The impeller screw hole (39) of one end on the left of cylinder (42), and screw (9) is mounted on the internal thread hole (45) of impeller end plate two (4)
In, it is fixed together shaft two (7) with impeller end plate two (4), and the other end of shaft two (7) is made to be located at impeller end
Plate two (4) it is axially external, the washer center hole of space washer two (5) is mounted on the radial outside of shaft two (7), and make
Space washer two (5) right end face is contacted with impeller end plate two (4) left end face and is installed together；
The centrifugal blower is partially installed on the curved section of diffuser (2) spiral case plate (23) and the snail of base (1) in assembly
Between hyoplastron two (22), and the installing web plate two (32) of diffuser (2) is mounted on the fixation gusset two (27) of base (1)
Surface is mounted on the installing web plate one (33) of diffuser (2) fixation gusset one (30) upper surface of base (1)；Several
Bolt is each passed through the bolt hole (10) of the installing web plate two (32) of diffuser (2) and the fixation gusset two (27) of base (1)
Bolt hole (10) is each passed through several bolts the bolt hole (10) and base (1) of the installing web plate one (33) of diffuser (2)
Fixation gusset one (30) bolt hole (10), be fixed together diffuser (2) with base (1)；Wheel member is worn
It crosses the pilot hole (25) of base end plate one (28) or passes through the pilot hole (25) of base end plate two (24), wheel member is installed
In diffuser (2) inner cavity；It is mounted on shaft one (13) radially-outer surface middle position in the sleeve central bore of axle sleeve one (14),
And so that the axially external one end of shaft one (13) is passed through the side plate axis hole of side plate one (16), make the axially external one end of shaft one (13)
It is axially external positioned at side plate one (16)；Shaft two (7) radially-outer surface middle position is set to be mounted on the axle sleeve center of axle sleeve two (6)
Kong Zhong, and the axially external one end of shaft two (7) is made to pass through the side plate axis hole of side plate two (8), make shaft two (7) axially external one
It is axially external that end is located at side plate two (8)；The shaft of motor is linked together with shaft one (13), alternatively, motor
Shaft links together with shaft two (7).
2. a kind of application method of helical blade air pressing type centrifugal blower according to claim 1, it is characterised in that：It is described
Centrifugal blower operational process is：
When the centrifugal blower is run, motor is by shaft one (13), impeller end plate one (17) driving impeller (3) along impeller
Direction of rotation (49) rotation, alternatively, motor is revolved by shaft two (7), impeller end plate two (4) driving impeller (3) along impeller
Turn direction (49) rotation；There is opposite fortune between the impeller blade (41) of impeller (3) and the diffuser vane (35) of diffuser (2)
It is dynamic；When impeller (3) is rotated along impeller direction of rotation (49), make to enter the wind the impeller that the air-flow in Inner chamber (48) enters impeller (3)
In runner (40), under the influence of centrifugal force, the air-flow in impeller channel (40) is flowed along impeller gas transmission direction (44), air-flow
It is accelerated during along impeller (3) spiral impeller channel (40) flowing, then air-flow enters the gap of diffuser (2)
In channel (36), air-flow slows down in the gap passage (36) of diffuser (2) to be pressurized, and impeller (3) is passed to the kinetic energy of air-flow
It is changed into potential energy, impeller blade (41) and diffuser vane (35) carry out first time pressurization to air-flow, and air-flow enters support component
Spiral case Inner chamber (46), the sectional area of spiral case Inner chamber (46) is gradually increased, and air-flow slows down pressurization again in spiral case Inner chamber (46),
Air-flow in spiral case Inner chamber (46) is discharged along air outlet airflow direction (19) from air outlet (18)；Air-flow is in impeller (3) spiral
When impeller channel (40) the high speed flowing of shape, negative pressure can be locally generated in impeller channel (40), which further inhales
The air-flow introduced in wind Inner chamber (48) enters in the impeller channel (40) of impeller (3)；Closed guard (34) prevents impeller channel
(40) air-flow in is back to air inlet Inner chamber (48) under the influence of centrifugal force.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810778785.3A CN108869333A (en) | 2018-07-16 | 2018-07-16 | Helical blade air pressing type centrifugal blower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810778785.3A CN108869333A (en) | 2018-07-16 | 2018-07-16 | Helical blade air pressing type centrifugal blower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108869333A true CN108869333A (en) | 2018-11-23 |
Family
ID=64302476
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810778785.3A Withdrawn CN108869333A (en) | 2018-07-16 | 2018-07-16 | Helical blade air pressing type centrifugal blower |
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| Country | Link |
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| CN (1) | CN108869333A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113775533A (en) * | 2021-09-15 | 2021-12-10 | 浙江理工大学 | Turbo pump device for rocket engine |
| CN114294266A (en) * | 2021-12-31 | 2022-04-08 | 广东美的白色家电技术创新中心有限公司 | Air guide structure and air outlet device |
| CN114439772A (en) * | 2022-03-28 | 2022-05-06 | 西安交通大学 | Bionic wing-shaped flow distribution net, low-noise cross flow fan and air conditioner |
| CN115585637A (en) * | 2022-12-12 | 2023-01-10 | 兰州理工大学 | Multifunctional drying equipment is used in production of stock column structure fungus class |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114439772A (en) * | 2022-03-28 | 2022-05-06 | 西安交通大学 | Bionic wing-shaped flow distribution net, low-noise cross flow fan and air conditioner |
| CN114439772B (en) * | 2022-03-28 | 2022-11-15 | 西安交通大学 | Bionic wing-shaped flow distribution net, low-noise cross flow fan and air conditioner |
| CN115585637A (en) * | 2022-12-12 | 2023-01-10 | 兰州理工大学 | Multifunctional drying equipment is used in production of stock column structure fungus class |
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Application publication date: 20181123 |