CN208804025U - A kind of efficient centrifugal blower - Google Patents
A kind of efficient centrifugal blower Download PDFInfo
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- CN208804025U CN208804025U CN201821450164.4U CN201821450164U CN208804025U CN 208804025 U CN208804025 U CN 208804025U CN 201821450164 U CN201821450164 U CN 201821450164U CN 208804025 U CN208804025 U CN 208804025U
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- impeller
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- casing
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Abstract
The utility model discloses a kind of efficient centrifugal blowers, including casing, impeller is equipped in casing, the driving motor rotated for impeller is equipped in the side of casing, driving motor is connected with impeller, it is respectively equipped with inlet box in the two sides of casing, collector is equipped between the air outlet and impeller of inlet box；Impeller drag ring is welded on the air intake of impeller, multiple first resistance slots are equipped at intervals with along its axial direction on the inner ring surface of impeller drag ring, it is welded with collector resistance ring corresponding with impeller drag ring on the outlet air end of collector, is equipped with multiple the second resistance slots corresponding with the first resistance slot along its axially spaced-apart on the outer ring surface of collector resistance ring.The utility model minimizes internal leakage loss in the case where not influencing impeller installation and operation, reduces impact of the leakage gas to gas in impeller passage, reduces the flow losses in impeller, improve fan efficiency, reach energy-efficient effect.
Description
Technical field
The utility model relates to mechanical ventilation equipment technical fields, are related specifically to a kind of efficient centrifugal blower.
Background technique
Centrifugal blower is the principle that potential energy is converted to according to kinetic energy, is accelerated gas using high-speed rotating impeller, then
Slow down, change flow direction, kinetic energy is made to be converted into potential energy.
Centrifugal blower is widely used in the industrial productions such as metallurgy, steel, chemical industry and building materials, due to centrifugal blower power compared with
Greatly, power consumption is big, therefore the efficiency for improving centrifugal blower is of great significance.
As shown in Figure 1, at present centrifugal blower the air intake 1 of impeller and the outlet air end 2 of collector between have it is certain between
Gap is drained back to the import of impeller by a part of gas of impeller outflow since the air intake 1 of impeller is there are pressure difference by gap
Low-pressure area, the gap between impeller front disc and collector can bring biggish internal leakage to lose.Leakage loss is in blower in blower
Accounting is larger in internal losses, in order to reduce interior leakage, gap should be made as small as possible, research shows that: radial clearance d and leaf
The ratio d/D of wheel diameter D is reduced to 0.0005 from 0.005, and fan efficiency can be made to improve 3-4%.It is especially big to industrially
Type centrifugal blower, power is huge, as can fan efficiency is made to improve 3%, can produce considerable energy-saving benefit.But it is limited to mesh
Preceding manufacture level of processing, to guarantee that impeller normal mounting and safe operation, the gap between impeller and collector are generally all stayed
It is larger, bring biggish internal leakage to centrifugal blower and lose, significantly reduce the efficiency of centrifugal blower.
However in view of the deficiencies of the prior art, a kind of design is reasonable, structure is simple, is not influencing it is necessary to develop by developer
In the case where impeller installation and operation, internal leakage loss is minimized, reduces leakage gas to gas in impeller passage
Impact, reduce impeller in flow losses, improve fan efficiency, reach the efficient centrifugal blower of energy-efficient effect.
Utility model content
In order to solve the problems existing in the prior art, the utility model aim provide a kind of design rationally, structure it is simple,
In the case where not influencing impeller installation and operation, internal leakage loss is minimized, reduces leakage gas to impeller passage
The impact of interior gas reduces the flow losses in impeller, improves fan efficiency, reaches the efficient centrifugation wind of energy-efficient effect
Machine.
In order to solve the above technical problems, the utility model is realized using following technical scheme:
A kind of efficient centrifugal blower, including casing are equipped with impeller in the casing, are equipped in the side of the casing
For the driving motor that impeller is rotated, the output shaft of the driving motor is connected by transmission shaft with impeller,
The casing is equipped with air outlet, is respectively equipped with inlet box, the air inlet of the inlet box and the external world in the two sides of the casing
Atmosphere is connected, and collector is equipped between the air outlet and impeller of the inlet box；
It is characterized in that, impeller drag ring is welded on the air intake of the impeller, in the impeller drag ring
Multiple first resistance slots are equipped at intervals with along its axial direction on anchor ring, is welded on the outlet air end of the collector and is hindered with impeller
The corresponding collector resistance ring of power ring is equipped on the outer ring surface of the collector resistance ring along its axially spaced-apart multiple with the
The corresponding second resistance slot of one resistance slot.
In a preferred embodiment of the utility model, the first resistance slot is staggeredly set up and down with the second resistance slot
It sets.
In a preferred embodiment of the utility model, the cross section of the first resistance slot and the second resistance slot is square
Shape or right angled triangle or isosceles triangle.
In a preferred embodiment of the utility model, the groove depth of the first resistance slot and the second resistance slot is 0.5-
2mm。
In a preferred embodiment of the utility model, inner ring surface and the collector resistance ring of the impeller drag ring
The distance between outer ring surface is the 0.1-0.2% of impeller outer diameter, the length of fit of the impeller drag ring and collector resistance ring
For the 1-3% of impeller outer diameter.
In a preferred embodiment of the utility model, one is welded on the outer peripheral surface of the outlet air end of the collector
Flange form flaps, the distance between air intake of the flaps to impeller are the 2-3% of impeller outer diameter, the flaps
Outer diameter is 30-80mm bigger than the internal diameter of the air intake of impeller.
In a preferred embodiment of the utility model, reinforcing rib, the reinforcing rib are welded on the collector
One end weld together with flaps.
Compared with prior art, the utility model is welded with impeller drag ring on the air intake of impeller, in collector
Outlet air end is equipped with collector resistance ring corresponding with impeller drag ring, on impeller drag ring and collector resistance ring respectively
Equipped with corresponding first resistance slot and the second resistance slot, using the above structure the case where not influencing impeller installation and operation
Under, internal leakage loss is minimized, impact of the leakage gas to gas in impeller passage is reduced, reduces the flowing in impeller
Loss improves fan efficiency, reaches energy-efficient effect.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the structural schematic diagram of the inlet and outlet of the impeller of existing centrifugal blower and the gap of collector.
Fig. 2 is the structural schematic diagram of the utility model.
Fig. 3 is enlarged drawing at the A of Fig. 2.
Specific embodiment
In order to be easy to understand the technical means, creative features, achievement of purpose, and effectiveness of the utility model, under
Face combines and is specifically illustrating, and the utility model is further described.
Referring to shown in Fig. 2 and Fig. 3, providing in figure is a kind of efficient centrifugal blower, including casing 100, in casing 100
It is interior to be equipped with impeller 200.
The driving motor rotated for impeller is equipped in the side of casing 100, the output shaft of driving motor is logical
It crosses transmission shaft 300 to be connected with impeller 200, air outlet is equipped on casing 100, is respectively equipped with air inlet in the two sides of casing 100
The air inlet 410 of case 400, inlet box 400 is connected with ambient atmosphere, inlet box 400 air outlet 420 and impeller 200 it
Between be equipped with collector 500.
It is welded with impeller drag ring 600 on the air intake 210 of impeller 200, the edge on the inner ring surface of impeller drag ring 600
Its axial direction is equipped at intervals with multiple first resistance slots 610, and the spacing between adjacent first resistance slot 610 is not less than 1mm.
Collector resistance ring 700 corresponding with impeller drag ring 600 is welded on the outlet air end 510 of collector 500,
Multiple second resistances corresponding with the first resistance slot 610 are equipped with along its axially spaced-apart on the outer ring surface of collector resistance ring 700
Power slot 710, the spacing between adjacent second resistance slot 710 is equally nor less than 1mm.
First resistance slot 610 is staggered with the second about 710 resistance slot, adopts the structure and effectively reduces leakage
Influence of the gas to impeller passage mainstream gas, further improves the practical performance of the centrifugal blower.
The cross section of first resistance slot 610 and the second resistance slot 710 is rectangle or right angled triangle or isosceles triangle, the
The groove depth of one resistance slot 610 and the second resistance slot 710 is 0.5-2mm, and adopting the structure can effectively improve to leaking into leaf
The resistance for taking turns the gas in the mainstream of channel avoids the flow velocity larger impact of the gas leaked into impeller passage mainstream logical to impeller
Mainstream gas in road, the cross section and groove depth of the first resistance slot 610 and the second resistance slot 710 can also be according to the actual situation
It is selected.
The distance between the inner ring surface of impeller drag ring 600 and the outer ring surface of collector resistance ring 700 c are outside impeller 200
The length of fit of the 0.1-0.2% of diameter, impeller drag ring 600 and collector resistance ring 700 is the 1-3% of 200 outer diameter of impeller.
A flange form flaps 800 is welded on the outer peripheral surface of the outlet air end 510 of collector 500, flaps 800 arrives leaf
The distance between air intake 210 of wheel 200 is the 2-3% of 200 outer diameter of impeller, the air inlet of the outer diameter of flaps 800 than impeller 200
The big 30-80mm of internal diameter at end 210, adopts the structure the gas-flow resistance being capable of increasing between collector 500 and impeller 200, into
One step reduces internal leakage loss, improves fan efficiency.
It is matched by the first resistance slot 610 with the second resistance slot 710 and the double action of flaps 800, by blower
Volumetric loss minimize, reduce influence of the leakage gas to impeller passage mainstream gas, improve gas in impeller 200
Flow efficiency improves fan efficiency, reaches energy-efficient effect, and leakage loss reduces 50% or more, and fan efficiency improves 1-2%,
Significantly reduce energy consumption.
Reinforcing rib 900 is welded on collector 500, one end and the flaps 800 of reinforcing rib 900 weld together, add
Strengthening tendons 900 effectively raise the bonding strength between flaps 800 and collector 500, further improve flaps 800 with
Stability between collector 500.
The utility model is welded with impeller drag ring on the air intake of impeller in summary, on the outlet air end of collector
Equipped with collector resistance ring corresponding with impeller drag ring, it is respectively equipped on impeller drag ring and collector resistance ring opposite
The the first resistance slot and the second resistance slot answered will be interior using the above structure in the case where not influencing impeller installation and operation
Leakage loss minimizes, and reduces impact of the leakage gas to gas in impeller passage, reduces the flow losses in impeller, mention
High fan efficiency reaches energy-efficient effect.
Basic principles, main features, and advantages of the present invention has been shown and described above.Current row
The technical staff of industry is described in above embodiments and description it should be appreciated that the present utility model is not limited to the above embodiments
Only illustrate the principles of the present invention, the utility model can also on the premise of not departing from the spirit and scope of the utility model
There are various changes and modifications, these various changes and improvements fall within the scope of the claimed invention.The utility model is wanted
Protection scope is asked to be defined by appended claims and its equivalent.
Claims (7)
1. a kind of efficient centrifugal blower, including casing are equipped with impeller in the casing, it is equipped with and uses in the side of the casing
It is connected by transmission shaft with impeller in the output shaft of the driving motor that impeller is rotated, the driving motor, in institute
Casing is stated equipped with air outlet, is respectively equipped with inlet box in the two sides of the casing, the air inlet of the inlet box and the external world are big
Gas phase connection, is equipped with collector between the air outlet and impeller of the inlet box；
It is characterized in that, impeller drag ring is welded on the air intake of the impeller, in the inner ring surface of the impeller drag ring
On along its axial direction be equipped at intervals with multiple first resistance slots, be welded on the outlet air end of the collector and impeller drag ring
Corresponding collector resistance ring is equipped with multiple and the first resistance along its axially spaced-apart on the outer ring surface of the collector resistance ring
The corresponding second resistance slot of power slot.
2. a kind of efficient centrifugal blower according to claim 1, it is characterised in that: the first resistance slot and the second resistance
Power slot is staggered up and down.
3. a kind of efficient centrifugal blower according to claim 1, it is characterised in that: the first resistance slot and the second resistance
The cross section of power slot is rectangle or right angled triangle or isosceles triangle.
4. a kind of efficient centrifugal blower according to claim 1, it is characterised in that: the first resistance slot and the second resistance
The groove depth of power slot is 0.5-2mm.
5. a kind of efficient centrifugal blower according to claim 1, it is characterised in that: the inner ring surface of the impeller drag ring
The distance between outer ring surface of collector resistance ring is the 0.1-0.2% of impeller outer diameter, the impeller drag ring and collector
The length of fit of resistance ring is the 1-3% of impeller outer diameter.
6. a kind of efficient centrifugal blower according to claim 1, it is characterised in that: in the outlet air end of the collector
A flange form flaps is welded on outer peripheral surface, the distance between air intake of the flaps to impeller is the 2- of impeller outer diameter
3%, the outer diameter of the flaps is 30-80mm bigger than the internal diameter of the air intake of impeller.
7. a kind of efficient centrifugal blower according to claim 6, it is characterised in that: be welded with and add on the collector
Strengthening tendons, one end and the flaps of the reinforcing rib weld together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821450164.4U CN208804025U (en) | 2018-09-05 | 2018-09-05 | A kind of efficient centrifugal blower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821450164.4U CN208804025U (en) | 2018-09-05 | 2018-09-05 | A kind of efficient centrifugal blower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208804025U true CN208804025U (en) | 2019-04-30 |
Family
ID=66236810
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821450164.4U Active CN208804025U (en) | 2018-09-05 | 2018-09-05 | A kind of efficient centrifugal blower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208804025U (en) |
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2018
- 2018-09-05 CN CN201821450164.4U patent/CN208804025U/en active Active
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