CN110145488A - A kind of impeller assembly for centrifugal blower - Google Patents
A kind of impeller assembly for centrifugal blower Download PDFInfo
- Publication number
- CN110145488A CN110145488A CN201910354996.9A CN201910354996A CN110145488A CN 110145488 A CN110145488 A CN 110145488A CN 201910354996 A CN201910354996 A CN 201910354996A CN 110145488 A CN110145488 A CN 110145488A
- Authority
- CN
- China
- Prior art keywords
- wheel disc
- mounting part
- impeller assembly
- disc mounting
- centrifugal blower
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a kind of impeller assemblies for centrifugal blower, including mid-game, the impeller assembly has axis, the mid-game has center, the mid-game includes being located in the middle wheel disc mounting part, positioned at the interconnecting piece of wheel disc mounting part periphery and positioned at the blade mounting portion of interconnecting piece periphery, blade slot is offered on the blade mounting portion, it is characterized by: the wheel disc mounting part is opposite whole prominent along axis direction with the junction of interconnecting piece, height outstanding is H2, and 2≤H2≤10mm.Compared with the prior art, the advantages of the present invention are as follows: by using shallow die mould, it is capable of increasing impeller center air intake space, reduces flow resistance, and shallow die mould is less using material, can reduce cost；Positive and negative die mould can make up for it the problem of weaker tabular rigidity and out-of-flatness；The adaptedness of different front and back air inlet ratios under different operating conditions is better achieved in regular ventilation hole, and autobalance enters the wind ratio.
Description
Technical field
The present invention relates to power-equipment, especially a kind of impeller assembly for centrifugal blower.
Background technique
Centrifugal blower will be accelerated by the mechanical energy of input using high-speed rotating impeller axially into the gas of impeller,
Then slow down, change direction, radially flow out impeller, finally go out by the air outlet of spiral case.The air quantity wind of centrifugal multiblade impeller
Pressure is higher, and lesser impeller outlet diameter can reach big airflow pressure and slow-speed of revolution low noise, and Chang Yingyong is in range hood
With the fields such as suction and discharge.
Double-entry impeller is mainly enclosed by front and back end at present, mid-game and border it is uniformly distributed blade composition.Such as application No. is
A kind of kitchen ventilator impeller disclosed in 201710305931.6 Chinese patent, including shroud, axle sleeve, blade, mid-game, hub disk,
Shroud and hub disk are respectively arranged at axial one end of blade, and axle sleeve covers at the middle part of mid-game, and mid-game is installed on blade circumferential direction
Middle and lower part.
This existing impeller, mid-game mostly use the structure of boss depth die mould, and flange stretch is higher, and material loss is got over
It is more, and impeller center air intake space can be tied up, also easily cause circumferential quality uneven in forming process, cause dynamic balance of impeller compared with
Difference.
Summary of the invention
The technical problem to be solved by the present invention is in view of the above-mentioned problems of the prior art, providing a kind of for being centrifuged
The impeller assembly of blower can reduce fluid flow resistance.
The technical scheme of the invention to solve the technical problem is: a kind of impeller assembly for centrifugal blower,
Including mid-game, the impeller assembly has axis, and the mid-game has center, and the mid-game includes being located in the middle wheel disc installation
Portion, positioned at wheel disc mounting part periphery interconnecting piece and on the blade mounting portion of interconnecting piece periphery, the blade mounting portion
Offer blade slot, it is characterised in that: the wheel disc mounting part is opposite whole along axis direction with the junction of interconnecting piece
Prominent, height outstanding is H2, and 2≤H2≤10mm.
To further increase air intake space, flow resistance is reduced, and reduce cost, on the interconnecting piece, circumferentially
Be provided with it is multiple it is spaced apart present a theatrical performance as the last item on a programme, described to present a theatrical performance as the last item on a programme prominent along axis direction, height outstanding is H1, and H1≤
5mm。
The problem of to make up weaker plate rigidity and out-of-flatness, the side outstanding that presents a theatrical performance as the last item on a programme of the wheel disc mounting part and interconnecting piece
To opposite.
To adapt to different operating conditions, autobalance enters the wind ratio, described to present a theatrical performance as the last item on a programme in a ring, the interior composition ventilation of presenting a theatrical performance as the last item on a programme
Hole.
To guarantee venthole airflow smooth, without abnormal sound, the edge of the ventilation hole uses round-corner transition.
Ratio is entered the wind for autobalance, size in the circumferential direction of the ventilation hole, by laterally leaning on close to wheel disc mounting part one
Nearly blade mounting portion side is gradually increased radially.
To have utilized the space between intermediate wheel disc mounting part to blade slot to greatest extent, guarantee is subsequent to be had enough
Area open stomata, it is described present a theatrical performance as the last item on a programme close to the inside rib of wheel disc mounting part and the outside rib far from wheel disc mounting part all
For arc section, the internal diameter of the inside rib is M1, and the outer diameter of the outside rib is M2, the wheel disc mounting part be circle,
And diameter is D1, and M1 > D1, M2 are less than the distance between the inward flange of the opposite centrosymmetric two blade slots of mid-game.
To make circumferential improve quality be evenly distributed, described present a theatrical performance as the last item on a programme is uniformly distributed in the circumferential, and quantity is even number, quantity
Range be 2~12, the quantity presented a theatrical performance as the last item on a programme can be divided exactly by 360.
There are enough areas to open up ventilation hole among while to guarantee bonding strength, pacifies on the wheel disc mounting part
Equipped with wheel disc, the wheel disc mounting part is that round and outer diameter is D1, and the outer diameter of the wheel disc is D3, the outer diameter of the mid-game
For D2, and the ratio of D1 >=D3, D1/D2 are between 0.3~0.4.
It preferably, further include front cover, rear cover and multiple blades, the mid-game is between front cover and rear cover, the blade
It is passed through from blade slot.
Compared with the prior art, the advantages of the present invention are as follows: by using shallow die mould, it is empty to be capable of increasing impeller center air inlet
Between, flow resistance is reduced, and shallow die mould is less using material, can reduce cost；It is rigid that positive and negative die mould can make up for it tabular
The problem of spending weaker and out-of-flatness；Regular ventilation hole is better achieved different front and backs under different operating conditions and enters the wind the suitable of ratios
Degree is answered, autobalance enters the wind ratio.
Detailed description of the invention
Fig. 1 is the schematic diagram of the impeller assembly of the embodiment of the present invention；
Fig. 2 is the schematic perspective view of the mid-game of the impeller assembly of the embodiment of the present invention；
Fig. 3 is the rearview of the mid-game of the impeller assembly of the embodiment of the present invention；
Fig. 4 is the sectional view along A-A of the mid-game of Fig. 3；
Fig. 5 is the front view of the wheel disc of the impeller assembly of the embodiment of the present invention.
Specific embodiment
The present invention will be described in further detail below with reference to the embodiments of the drawings.
Referring to FIG. 1 to FIG. 5, a kind of impeller assembly for centrifugal blower can be made of metal plate, be double intake air impellers,
Including front cover 1, rear cover 2, multiple blades 3 and mid-game 4.Mid-game 4 is arranged between front cover 1 and rear cover 2, and multiple blades 3 pass through
Mid-game 4, its both ends are connected and fixed with front cover 1 and rear cover 2 respectively.Mid-game 4 has dynamic balancing, the air inlet flowing of impeller not small
Influence.
In the present embodiment, mid-game 4 includes being located in the middle wheel disc mounting part 41, the company positioned at wheel 41 periphery of disc mounting part
Socket part 42 and blade mounting portion 43 positioned at 42 periphery of interconnecting piece, three parts are integrally formed.Wherein, wheel disc mounting part 41 is in circle
Plate-like, interconnecting piece 42 and blade mounting portion 43 are distinguished annular in shape, and three successively (center O) is arranged from inside to outside, with one heart.Wheel
Disk 5 is for being arranged in wheel disc mounting part 41.Multiple blade slots 431 are offered on blade mounting portion 43, are passed through for blade 3.
Above structure is identical as the prior art, and details are not described herein.
Opposite, the outstanding direction prominent to front side (front cover 1) with the junction of interconnecting piece 42 of intermediate wheel disc mounting part 41
It is H2, and 2≤H2≤10mm along the axis X direction of impeller, height outstanding, thus constitutes the wheel disc mounting part of shallow die mould
41.The outer diameter for taking turns disc mounting part 41 is D1, and the outer diameter of wheel disc 5 is D3, and the outer diameter of the two meets: D1 is equal or slightly larger than D3.In
The outer diameter of disk 4 is D2, it is preferred that the ratio of D1/D2 is between 0.3~0.4.Have among while to guarantee bonding strength enough
Area can be used on interconnecting piece 42 opening air holes 42, wheel disc mounting part 41 and wheel disc 5 can pass through screw or rivets are pacified
Dress.
On interconnecting piece 42, circumferentially be evenly arranged with it is multiple it is spaced apart present a theatrical performance as the last item on a programme 421, each presenting a theatrical performance as the last item on a programme 421 is in
Annular is protruded towards rear side (rear cover 2), direction outstanding takes turns disc mounting part 41 and present a theatrical performance as the last item on a programme along the axis X direction of impeller
421 constitute positive and negative two opposite die moulds.421 number of presenting a theatrical performance as the last item on a programme is even number, and quantity is 2-12, and can be divided exactly by 360, to protect
Demonstrate,prove circumferential uniform quality distribution.Preferably, as shown in Figure 3,421 are presented a theatrical performance as the last item on a programme as 6.Present a theatrical performance as the last item on a programme 421 height be H1, H1≤5mm,
Thus constitute shallow die mould presents a theatrical performance as the last item on a programme 421.It presents a theatrical performance as the last item on a programme and constitutes ventilation holes 422 in 421.
421 are presented a theatrical performance as the last item on a programme close to the inside rib 4211 of wheel disc mounting part 41 and far from the outside rib 4212 for taking turns disc mounting part 41
It is all arc section, the diameter (internal diameter) of inside rib 4211 is M1, and the diameter (outer diameter) of outside rib 4212 is M2, and M1 is bigger
In D1, it is preferred that the difference of M1 and D1 is 5~15mm, and M2 is slightly less than the interior of the opposite symmetrical two blade slots 431 of center O
The distance between edge, preferred small 5~15mm.Present a theatrical performance as the last item on a programme 421 inside rib 4211 circumferential both ends and outside rib 4212
It is connected respectively by rib 4213 between corresponding circumferential direction both ends, and inside rib 4211, outside rib 4212 and rib 4213
Equivalent width so that air-flow uniformly through.
What is be arranged through the above way presents a theatrical performance as the last item on a programme 421, and intermediate wheel disc mounting part 41 to blade can have been utilized to insert to greatest extent
Space between slot 431, and the value of M1 and M2 also can guarantee subsequent there is enough areas to open stomata 422, such as M1
Excessive or M2 is too small, and intermediate 422 area of ventilation hole will be limited.
To guarantee 422 airflow smooth of venthole, without abnormal sound, 422 edge of venthole uses round-corner transition, each ventilation hole
422 draught area is not less than 500mm2, total draught area is not less than 5000mm2, size in the circumferential direction of ventilation hole 422, by leaning on
The side of one laterally closer blade mounting portion 43 of nearly wheel disc mounting part 41 is gradually increased radially.This is because impeller does work
Air-flow focuses more on 3 side of blade in the process, intermediate then relatively fewer.In the present embodiment, it presents a theatrical performance as the last item on a programme 421 whole and ventilations
Hole 422 is in be similar to trapezoidal shape, and the arc length of inside rib 4211 (circular arc) is shorter than outside rib 4212 (circular arc), and four
Angle is round-corner transition.
By using the wheel disc mounting part 41 and interconnecting piece 42 of two positive and negative shallow die moulds, shallow die mould is capable of increasing impeller center
The problem of air intake space reduces flow resistance, and positive and negative die mould can make up for it weaker tabular rigidity and out-of-flatness, and shallowly press
Type is less using material, can reduce cost；In addition regular ventilation hole 422 is better achieved under different operating conditions not the same
The adaptedness for entering the wind ratio afterwards, as air quantity is excessive on front side of impeller, rear side deficiency in draught when, rear side blade does work utilization rate just
Low, at this moment air-flow can enter rear side from front side by ventilation hole 422, and autobalance enters the wind ratio.
Claims (10)
1. a kind of impeller assembly for centrifugal blower, including mid-game (4), the impeller assembly has axis (X), the mid-game
(4) there is center (O), the mid-game (4) includes being located in the middle wheel disc mounting part (41), being located at wheel disc mounting part (41) periphery
Interconnecting piece (42) and be located at the blade mounting portion (43) of interconnecting piece (42) periphery, offer on the blade mounting portion (43)
Blade slot (431), it is characterised in that: wheel disc mounting part (41) is opposite whole along axis with the junction of interconnecting piece (42)
The line direction (X) is prominent, and height outstanding is H2, and 2≤H2≤10mm.
2. the impeller assembly according to claim 1 for centrifugal blower, it is characterised in that: on the interconnecting piece (42),
Circumferentially be provided with it is multiple it is spaced apart present a theatrical performance as the last item on a programme (421), present a theatrical performance as the last item on a programme (421) are prominent along the axis direction (X), outstanding
It is highly H1, and H1≤5mm.
3. the impeller assembly according to claim 2 for centrifugal blower, it is characterised in that: the wheel disc mounting part (41)
It is outstanding contrary with the presenting a theatrical performance as the last item on a programme of interconnecting piece (42) (421).
4. the impeller assembly according to claim 2 for centrifugal blower, it is characterised in that: described present a theatrical performance as the last item on a programme (421) are in ring
Shape, described (421) interior composition ventilation hole (422) of presenting a theatrical performance as the last item on a programme.
5. the impeller assembly according to claim 4 for centrifugal blower, it is characterised in that: the ventilation hole (422)
Edge uses round-corner transition.
6. the impeller assembly according to claim 4 for centrifugal blower, it is characterised in that: the ventilation hole (422)
Size in circumferential direction, by gradually increasing radially close to wheel laterally closer blade mounting portion (43) side of disc mounting part (41) one
Greatly.
7. the impeller assembly according to claim 4 for centrifugal blower, it is characterised in that: present a theatrical performance as the last item on a programme (421) are close
Taking turns the inside rib (4211) of disc mounting part (41) and the outside rib (4212) far from wheel disc mounting part (41) is all arc section,
The internal diameter of the inside rib (4211) is M1, and the outer diameter of the outside rib (4212) is M2, the wheel disc mounting part (41)
It is D1 for round and diameter, M1 > D1, M2 are less than the inner edge of opposite mid-game (4) centrosymmetric two blade slots (431)
The distance between edge.
8. the impeller assembly according to claim 2 for centrifugal blower, it is characterised in that: present a theatrical performance as the last item on a programme (421) are in week
Be uniformly distributed upwards, and quantity be even number, quantity range be 2~12, the quantity for presenting a theatrical performance as the last item on a programme (421) can be whole by 360
It removes.
9. the impeller assembly according to claim 1 for centrifugal blower, it is characterised in that: the wheel disc mounting part (41)
On be equipped with wheel disc (5), the wheel disc mounting part (41) is round and outer diameter is D1, and the outer diameter of the wheel disc (5) is D3,
The outer diameter of the mid-game (4) is D2, and the ratio of D1 >=D3, D1/D2 are between 0.3~0.4.
10. being used for the impeller assembly of centrifugal blower described according to claim 1~any one of 9, it is characterised in that: further include
Front cover (1), rear cover (2) and multiple blades (3), the mid-game (4) are located between front cover (1) and rear cover (2), the blade (3)
It is passed through from blade slot (431).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910354996.9A CN110145488A (en) | 2019-04-29 | 2019-04-29 | A kind of impeller assembly for centrifugal blower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910354996.9A CN110145488A (en) | 2019-04-29 | 2019-04-29 | A kind of impeller assembly for centrifugal blower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110145488A true CN110145488A (en) | 2019-08-20 |
Family
ID=67594634
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910354996.9A Pending CN110145488A (en) | 2019-04-29 | 2019-04-29 | A kind of impeller assembly for centrifugal blower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110145488A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201763676U (en) * | 2010-09-21 | 2011-03-16 | 浙江亿利达风机股份有限公司 | Air-conditioning fan impeller |
| CN203756592U (en) * | 2014-03-14 | 2014-08-06 | 浙江理工大学 | Wide-blade short-blade-pitch integrated draught fan impeller |
| CN107023510A (en) * | 2017-05-03 | 2017-08-08 | 广东美的厨房电器制造有限公司 | Lampblack absorber impeller and lampblack absorber |
| CN109555724A (en) * | 2017-09-26 | 2019-04-02 | 青岛海尔智慧厨房电器有限公司 | Staggered tooth impeller and range hood |
-
2019
- 2019-04-29 CN CN201910354996.9A patent/CN110145488A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201763676U (en) * | 2010-09-21 | 2011-03-16 | 浙江亿利达风机股份有限公司 | Air-conditioning fan impeller |
| CN203756592U (en) * | 2014-03-14 | 2014-08-06 | 浙江理工大学 | Wide-blade short-blade-pitch integrated draught fan impeller |
| CN107023510A (en) * | 2017-05-03 | 2017-08-08 | 广东美的厨房电器制造有限公司 | Lampblack absorber impeller and lampblack absorber |
| CN109555724A (en) * | 2017-09-26 | 2019-04-02 | 青岛海尔智慧厨房电器有限公司 | Staggered tooth impeller and range hood |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190820 |