CN106050691A - Multi-stage centrifugal blower - Google Patents
Multi-stage centrifugal blower Download PDFInfo
- Publication number
- CN106050691A CN106050691A CN201610347587.2A CN201610347587A CN106050691A CN 106050691 A CN106050691 A CN 106050691A CN 201610347587 A CN201610347587 A CN 201610347587A CN 106050691 A CN106050691 A CN 106050691A
- Authority
- CN
- China
- Prior art keywords
- centrifugal blower
- housing
- air inlet
- multistage centrifugal
- impeller
- 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
- F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
- F04D17/08—Centrifugal pumps
- F04D17/10—Centrifugal pumps for compressing or evacuating
- F04D17/12—Multi-stage pumps
- F04D17/122—Multi-stage pumps the individual rotor discs being, one for each stage, on a common shaft and axially spaced, e.g. conventional centrifugal multi- stage compressors
-
- 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
- F04D29/4213—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps suction ports
-
- 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
- F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
- F04D29/701—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps
Abstract
The invention provides a multi-stage centrifugal blower and relates to the technical field of blowers. By the adoption of the multi-stage centrifugal blower, the technical problem that in the prior art, only one pressure can be provided by one multi-stage centrifugal blower is solved. The multi-stage centrifugal blower comprises a shell, a rotary shaft and a plurality of impellers, wherein the rotary shaft is sleeved with the impellers at intervals and penetrates through the shell, the impellers are located in a cavity of the shell, partition boards are arranged between the adjacent impellers and connected with the shell, and the shell is provided with an air outlet and a plurality of air inlets. The multi-stage centrifugal blower can provide various pressures, thereby adapting to the situation that various pressure working conditions are required in a system.
Description
Technical field
The present invention relates to blower technology field, especially relate to a kind of multistage centrifugal blower.
Background technology
Centrifugal blower is constant-pressure type blower fan, relatively positive displacement blower fan have supply continuously, run balance, efficiency is high, structure
Simply, noise is low, overall dimensions and the advantage such as weight is little, few easy workout part.Centrifugal blower is divided into again Multi-stage centrifugal fan and list
Level centrifugal blower.Simple fan utilizes high rotating speed to reach required blast and air quantity, and more stages blower fan runner is short, decreases multistage
Between passages losses, air quantity is big but fan pressure is relatively small.Multistage blower fan utilizes the mode pressurizeed step by step, improves blast, special
Point is that greatly but air quantity is relatively small for blast, and centrifugal fan outlet pressure and actual air volume are by intake air temperature or the shadow of variable density
Ringing relatively big, to a given air inflow, the pressure produced during the highest intake air temperature (density is minimum) is minimum, required power with
Intake air temperature raises and reduces.
The centrifugal blower used at present, generally use is the conventional structure of an import one outlet, this many
Level centrifugal blower one can only provide an admission pressure, can only meet a pressure working condition condition.When system requirements has many
During individual pressure working condition, it is necessary to multiple stage aerator.If the quantity of aerator is many, then maintenance workload is installed big, operation element
Complicated.
Summary of the invention
It is an object of the invention to provide a kind of multistage centrifugal blower, multistage to solve present in prior art one
Centrifugal blower can only provide the technical problem of a pressure.
For reaching above-mentioned purpose, the technical scheme is that and be achieved in that:
The multistage centrifugal blower that the present invention provides, including: housing, rotating shaft and multiple impeller, wherein, multiple described impellers
Spacer sleeve is loaded in described rotating shaft, and described rotating shaft passes described housing, and multiple described impellers are positioned at the cavity of described housing, phase
Being provided with dividing plate between adjacent described impeller, described dividing plate is connected with described housing, and described housing has a gas outlet with many
Individual air inlet.
Preferably, the quantity of described air inlet is identical with the quantity of described impeller.
Preferably, each described air inlet is correspondingly arranged with described impeller, each described air inlet and corresponding described impeller institute
Described cavity be connected.
Preferably, the quantity of described air inlet is less than the quantity of described impeller.
Preferably, each described air inlet the most corresponding different described impeller on the housing is arranged.
Preferably, at each described air inlet, flange is installed.
Preferably, it is provided with filter screen at each described air inlet.
Preferably, described housing includes that upper half-shell and housing lower half, described upper half-shell are connected with described housing lower half.
Preferably, it is provided with sealing ring between described upper half-shell and described housing lower half.
Preferably, the quantity of described impeller is four.
Relative to prior art, multistage centrifugal blower of the present invention has the advantage that
Owing to, in the multistage centrifugal blower that the present invention provides, the quantity of air inlet is multiple, and the quantity of impeller is also many
Individual, and each air inlet lays respectively at position corresponding from different impellers on housing.In multistage centrifugal blower, different impellers
The residing pressure in cavity is different, the biggest the closer to the pressure in the cavity residing for the impeller at gas outlet, and at gas outlet
Pressure be constant, say, that when the position difference of air inlet, the pressure at air inlet is also different.Specifically,
When air inlet on housing when being located closer in gas outlet, the pressure at this air inlet is bigger.
From the foregoing, it will be observed that owing to the multistage centrifugal blower of present invention offer being provided with multiple air inlet, and each air inlet
Different from the distance between air outlet, the pressure of the most each air inlet is different, such that it is able to meet system for different pressures
The demand of operating mode.
Compared with using multiple stage multistage centrifugal blower with prior art when needs meet different pressures duty requirements, this
The multistage centrifugal blower that invention provides can provide multiple various inlet pressure simultaneously, so that inventing offer with a playscript with stage directions
Multistage centrifugal blower just can meet the system demand for multiple different pressures operating mode, such that it is able to minimizing driving equipment,
Detection equipment, auxiliary equipment etc., reduce the maintenance cost of multistage centrifugal blower simultaneously.
Additionally, in the housing of multistage centrifugal blower, the temperature of zones of different is different, it is specially at air outlet
Temperature higher, and multistage centrifugal blower be chronically at the environment that temperature is higher operates more fragile.And due to the present invention
Being provided with multiple air inlet in the multistage centrifugal blower provided, different air inlets position on housing is different, relative to shell
For internal air, relatively low from the temperature of the air of air inlet entrance enclosure interior, therefore, providing many by the present invention
The many places air inlet of level centrifugal blower in housing during suction air, air that the temperature that enters from air inlet is relatively low and housing
The air mixing that interior temperature is higher, so that the temperature in housing reduces, owing to air inlet is multiple, therefore can make simultaneously
The temperature of the zones of different obtaining housing reduces, thus reaches more preferable cooling-down effect, and then improves making of multistage centrifugal blower
Use the life-span.
Accompanying drawing explanation
In order to be illustrated more clearly that the specific embodiment of the invention or technical scheme of the prior art, below will be to specifically
In embodiment or description of the prior art, the required accompanying drawing used is briefly described, it should be apparent that, in describing below
Accompanying drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not paying creative work
Put, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
The structural representation of the multistage centrifugal blower that Fig. 1 provides for the embodiment of the present invention.
Reference:
1-housing；2-rotating shaft；
3-air inlet；4-gas outlet；
5-left bearing case group；6-right bearing case group；
7-impeller.
Detailed description of the invention
Below in conjunction with accompanying drawing, technical scheme is clearly and completely described, it is clear that described enforcement
Example is a part of embodiment of the present invention rather than whole embodiments.Based on the embodiment in the present invention, ordinary skill
The every other embodiment that personnel are obtained under not making creative work premise, broadly falls into the scope of protection of the invention.
In describing the invention, it should be noted that term " " center ", " on ", D score, "left", "right", " vertically ",
Orientation or the position relationship of the instruction such as " level ", " interior ", " outward " they are based on orientation shown in the drawings or position relationship, merely to
Be easy to describe the present invention and simplifying describe rather than instruction or the hint device of indication or element must have specific orientation,
With specific azimuth configuration and operation, therefore it is not considered as limiting the invention.Additionally, term " first ", " second ",
" the 3rd " is only used for describing purpose, and it is not intended that indicate or hint relative importance.
In describing the invention, it should be noted that unless otherwise clearly defined and limited, term " is installed ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be fixing connection, it is also possible to be to removably connect, or be integrally connected；Can
To be mechanical connection, it is also possible to be electrical connection；Can be to be joined directly together, it is also possible to be indirectly connected to by intermediary, Ke Yishi
The connection of two element internals.For the ordinary skill in the art, can understand that above-mentioned term is at this with concrete condition
Concrete meaning in invention.
Embodiment one
The structural representation of the multistage centrifugal blower that Fig. 1 provides for the embodiment of the present invention, as it is shown in figure 1, the present invention is real
Execute the multistage centrifugal blower that example one provides, including: housing 1, rotating shaft 2 and multiple impeller 7, wherein, multiple impellers 7 interval suit
In rotating shaft 2, rotating shaft 2 is through housing 1, and multiple impellers 7 are positioned at the cavity of housing 1, be provided with between adjacent impeller 7 every
Plate, dividing plate is connected with housing 1, and housing 1 has a gas outlet 4 and multiple air inlet 3, and each air inlet 3 lays respectively on housing 1
The position corresponding from different impellers 7.
When being embodied as, multistage centrifugal blower also includes that base, the two ends of rotating shaft 2 are separately installed with left bearing case group 5
With right bearing case group 6, rotating shaft 2 is connected with base with right bearing case group 6 by left bearing case group 5, and housing 1 is positioned at left bearing case group
Between 5 and right bearing case group 6, one end of rotating shaft 2 is connected with driving motor by shaft coupling, drives motor to be arranged on base.
In the present embodiment one, the quantity of air inlet 3 is identical with the quantity of impeller 7, and each air inlet 3 is corresponding with impeller 7 to be set
Putting, each air inlet 3 is connected with the cavity at corresponding impeller 7 place.For example, rotating shaft 2 is set with four impellers 7, point
Not Wei one stage impeller, sencond stage impeller, three grades of impellers and level Four impeller, then the quantity of housing 1 internal partition is three, adjacent two
Being provided with a dividing plate between impeller 7, now, housing 1 has a gas outlet 4 and four air inlets 3, on housing 1, and often
The place of one impeller 7 correspondence is all correspondingly arranged on an air inlet 3, and gas can enter the impeller 7 of correspondence by each air inlet 3
In residing cavity.
Owing to, in the multistage centrifugal blower that the embodiment of the present invention provides, the quantity of air inlet 3 is multiple, the number of impeller 7
Amount is also multiple, and each air inlet 3 lays respectively at position corresponding from different impellers 7 on housing 1.At multistage centrifugal blower
In, the pressure in different cavitys residing for impeller 7 is different, the closer to the pressure in the cavity residing for the impeller 7 at gas outlet 4 more
Greatly, the pressure and at gas outlet 4 is constant, say, that when the position difference of air inlet 3, the pressure at air inlet 3 is also
It is different.Specifically, when air inlet 3 on housing 1 when being located closer in gas outlet 4, the pressure at this air inlet 3 is more
Greatly.
From the foregoing, it will be observed that owing to the multistage centrifugal blower of embodiment of the present invention offer being provided with multiple air inlet, and respectively
Distance between air inlet from air outlet is different, and the pressure of the most each air inlet is different, such that it is able to meet system for not
Demand with pressure working condition.
Compared with using multiple stage multistage centrifugal blower with prior art when needs meet different pressures duty requirements, this
The multistage centrifugal blower that inventive embodiments provides can provide multiple various inlet pressure simultaneously, so that inventing with a playscript with stage directions
The multistage centrifugal blower that embodiment provides just can meet the system demand for multiple different pressures operating mode, such that it is able to subtract
Drive equipment, detection equipment, auxiliary equipment etc. less, reduce the maintenance cost of multistage centrifugal blower simultaneously.
Additionally, in the housing 1 of multistage centrifugal blower, the temperature of zones of different is different, it is specially the closer to air outlet
Place temperature higher, and multistage centrifugal blower be chronically at the environment that temperature is higher operates more fragile.And due to this
Being provided with multiple air inlet in the multistage centrifugal blower that bright embodiment provides, different air inlets position on housing 1 is different,
For the air in housing 1, relatively low, therefore, by this from the temperature of the air within air inlet entrance housing 1
The many places air inlet of multistage centrifugal blower that bright embodiment provides in housing 1 during suction air, the temperature entered from air inlet
The air spending relatively low air higher with temperature in housing 1 mixes, so that the temperature in housing 1 reduces, due to air inlet
For multiple, the temperature of the zones of different of housing 1 therefore can be made simultaneously to reduce, thus reach more preferable cooling-down effect, and then
Improve the service life of multistage centrifugal blower.
Embodiment two
As it is shown in figure 1, the multistage centrifugal blower that the embodiment of the present invention two provides, including: housing 1, rotating shaft 2 and multiple leaf
Wheel 7, wherein, multiple impeller 7 spacer sleeves are loaded in rotating shaft 2, and rotating shaft 2 is through housing 1, and multiple impellers 7 are positioned at the cavity of housing 1
In, it being provided with dividing plate between adjacent impeller 7, dividing plate is connected with housing 1, and housing 1 has a gas outlet 4 and multiple air inlet
3.When being embodied as, multistage centrifugal blower also includes that base, the two ends of rotating shaft 2 are separately installed with left bearing case group 5 and right axle
Holding case group 6, rotating shaft 2 is connected with base with right bearing case group 6 by left bearing case group 5, and housing 1 is positioned at left bearing case group 5 and the right side
Between bearing housing group 6, one end of rotating shaft 2 is connected with driving motor by shaft coupling, drives motor to be arranged on base.
In the present embodiment two, the quantity of air inlet 3 is less than the quantity of impeller 7, and each air inlet 3 is difference on housing 1
Corresponding different impeller 7 is arranged.For example, rotating shaft 2 is set with four impellers 7, respectively one stage impeller, sencond stage impeller,
Three grades of impellers and level Four impeller, then the quantity of housing 1 internal partition is three, be provided with between two adjacent impellers 7 one every
Plate is when housing 1 has a gas outlet 4 and two air inlets 3, on housing 1, corresponding with one stage impeller and sencond stage impeller
Place is all correspondingly arranged on an air inlet 3, and the place corresponding with three grades of impellers and level Four impeller is all not provided with air inlet 3,
Gas can be entered by each air inlet 3 in the cavity residing for impeller 7 of correspondence.
Certainly, in other detailed description of the invention, the corresponding relation between air inlet 3 and impeller 7 can also be: at housing
On 1, the place corresponding with one stage impeller and level Four impeller is all correspondingly arranged on an air inlet 3, with sencond stage impeller and three grades of leaves
The place that wheel is corresponding is all not provided with air inlet 3；Or, on housing 1, the place corresponding with sencond stage impeller and three grades of impellers is divided
Not being provided with an air inlet 3, the place corresponding with one stage impeller and level Four impeller is not provided with air inlet 3；Or this area skill
The set-up mode of other the air inlet 3 that art personnel are readily apparent that.
Additionally, the difference of the quantity according to air inlet 3, air inlet 3 is the most different with the corresponding relation of impeller 7.
The multistage centrifugal blower that the multistage centrifugal blower that the present embodiment two provides and above-described embodiment one provide is had
Some Dominant Facies are same, do not repeat them here.
In the multistage centrifugal blower that above-described embodiment one and embodiment two provide, the mechanism of multistage centrifugal blower is also
Can there is a following deformation:
For the ease of being connected with admission line, flange can be respectively mounted at each air inlet 3；Similarly, for the ease of
It is connected with outlet pipe, also can mounting flange at gas outlet 4.
Internal in order to prevent the particulate matter such as dust, silt from entering housing 1 with gas via air inlet 3, rotate in housing 1
And scratch housing 1, in a preferred embodiment, at each air inlet 3, it is provided with filter screen, when gas enters via filter screen
The when that housing 1 being internal, the particulate matter such as dust, silt is blocked outside air inlet 3 by filter screen, thus avoids dust, silt etc.
Grain thing enters inside housing 1, thus avoids the particulate matter such as dust, silt to scratch housing 1, to extend the service life of housing 1.
In multistage centrifugal blower in the various embodiments described above, housing 1 can be structure as a whole, or, have at another kind
In body embodiment, housing 1 includes upper half-shell and housing lower half, and upper half-shell is connected with housing lower half, and upper half-shell with
Sealing ring it is provided with, to prevent gas via the junction leakage of upper half-shell with housing lower half between housing lower half.
Specifically, the bottom surface of housing lower half is provided with groove, is provided with sealing ring in groove, sealing ring respectively with upper half shell
Body contacts with housing lower half.Sealing ring can be O RunddichtringO, and has certain elasticity, sealing ring position during installing
In groove and one end (upper surface) stretches out the opening of groove, when by after involutory to upper half-shell and housing lower half, upper half-shell
Lower surface is pressed downward against sealing ring so that sealing ring compresses and completely in groove, and now sealing effectiveness is more preferable.
Certainly, groove can be arranged in upper half-shell, and now, sealing ring is positioned in the groove of upper half-shell and has one end
(lower surface) stretches out the opening of groove, and during installing, in the grooves and one end (lower surface) stretches out groove to sealing ring
Opening, after upper half-shell and housing lower half is involutory, the upper surface of housing lower half presses up sealing ring so that sealing ring compresses
And completely in groove, now sealing effectiveness is more preferable.
In order to be easy to para-position, at the interface of upper half-shell upper half-shell being installed with housing lower half when
(lower surface of upper half-shell) outer is provided with flange, flange is provided with hole, location, at the interface (lower half shell of housing lower half
The upper surface of body) outer is provided with flange, and flange is provided with guide pillar, upper half-shell is being mounted together with housing lower half
Time, by guide pillar through hole, location, consequently facilitating upper half-shell is aligned with housing lower half and is installed together.The quantity of guide pillar is
Multiple, multiple guide pillars are spaced evenly distributed on the flange of housing lower half.
Additionally, be also provided with door at each air inlet 3, when only using one or several air inlet in multiple air inlet 3
During mouth 3, open the door at the air inlet 3 that need to use, admission line is connected with the air inlet 3 that need to use, and without opening
This time without the air inlet 3 used.Thus, the multistage centrifugal blower that the application provides can also be as of the prior art
The multistage centrifugal blower having an air inlet 3 uses (the most only opening an air inlet 3, close other air inlets 3).Respectively enter
The folding situation of QI KOU 3 can be controlled according to use demand.
Last it is noted that various embodiments above is only in order to illustrate technical scheme, it is not intended to limit；To the greatest extent
The present invention has been described in detail by pipe with reference to foregoing embodiments, it will be understood by those within the art that: it depends on
So the technical scheme described in foregoing embodiments can be modified, or the most some or all of technical characteristic is entered
Row equivalent；And these amendments or replacement, do not make the essence of appropriate technical solution depart from various embodiments of the present invention technology
The scope of scheme.
Claims (10)
1. a multistage centrifugal blower, it is characterised in that including: housing, rotating shaft and multiple impeller, wherein, multiple described leaves
Wheel spacer sleeve is loaded in described rotating shaft, and described rotating shaft passes described housing, and multiple described impellers are positioned at the cavity of described housing,
Being provided with dividing plate between adjacent described impeller, described dividing plate is connected with described housing, described housing have a gas outlet and
Multiple air inlets.
Multistage centrifugal blower the most according to claim 1, it is characterised in that the quantity of described air inlet and described impeller
Quantity identical.
Multistage centrifugal blower the most according to claim 2, it is characterised in that each described air inlet is corresponding with described impeller
Arranging, each described air inlet is connected with the described cavity at corresponding described impeller place.
Multistage centrifugal blower the most according to claim 1, it is characterised in that the quantity of described air inlet is less than described leaf
The quantity of wheel.
Multistage centrifugal blower the most according to claim 4, it is characterised in that each described air inlet is on the housing
The most corresponding different described impeller is arranged.
Multistage centrifugal blower the most according to claim 1, it is characterised in that be provided with flange at each described air inlet.
Multistage centrifugal blower the most according to claim 1, it is characterised in that be provided with filter screen at each described air inlet.
Multistage centrifugal blower the most according to claim 1, it is characterised in that described housing includes upper half-shell and lower half
Housing, described upper half-shell is connected with described housing lower half.
Multistage centrifugal blower the most according to claim 8, it is characterised in that described upper half-shell and described housing lower half
Between be provided with sealing ring.
Multistage centrifugal blower the most according to claim 1, it is characterised in that the quantity of described impeller is four.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610347587.2A CN106050691A (en) | 2016-05-24 | 2016-05-24 | Multi-stage centrifugal blower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610347587.2A CN106050691A (en) | 2016-05-24 | 2016-05-24 | Multi-stage centrifugal blower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106050691A true CN106050691A (en) | 2016-10-26 |
Family
ID=57174402
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610347587.2A Pending CN106050691A (en) | 2016-05-24 | 2016-05-24 | Multi-stage centrifugal blower |
Country Status (1)
| Country | Link |
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| CN (1) | CN106050691A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201027673Y (en) * | 2007-04-12 | 2008-02-27 | 湖北湖风机械制造有限公司 | Multilevel sewage-treating centrifugal blower |
| CN101418804A (en) * | 2008-11-25 | 2009-04-29 | 陈克复 | A kind of multistage turbine vacuum machine and use the method that it extracts multi-stage vacuum |
| CN201428625Y (en) * | 2009-05-27 | 2010-03-24 | 沈阳鼓风机集团有限公司 | Single-axis multi-stage centrifugal blower |
| CN202381350U (en) * | 2011-12-06 | 2012-08-15 | 沈阳透平机械股份有限公司 | Centrifugal compressor |
| CN203035606U (en) * | 2012-12-28 | 2013-07-03 | 沈阳透平机械股份有限公司 | Impeller of MCO-type centrifugal compressor |
| CN103557166A (en) * | 2013-10-15 | 2014-02-05 | 沈阳斯特机械制造有限公司 | Multistage centrifugal compressor |
| CN103807185A (en) * | 2014-02-13 | 2014-05-21 | 沈阳斯特机械制造有限公司 | Multistage centrifugal compressor capable of being detached horizontally |
-
2016
- 2016-05-24 CN CN201610347587.2A patent/CN106050691A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201027673Y (en) * | 2007-04-12 | 2008-02-27 | 湖北湖风机械制造有限公司 | Multilevel sewage-treating centrifugal blower |
| CN101418804A (en) * | 2008-11-25 | 2009-04-29 | 陈克复 | A kind of multistage turbine vacuum machine and use the method that it extracts multi-stage vacuum |
| CN201428625Y (en) * | 2009-05-27 | 2010-03-24 | 沈阳鼓风机集团有限公司 | Single-axis multi-stage centrifugal blower |
| CN202381350U (en) * | 2011-12-06 | 2012-08-15 | 沈阳透平机械股份有限公司 | Centrifugal compressor |
| CN203035606U (en) * | 2012-12-28 | 2013-07-03 | 沈阳透平机械股份有限公司 | Impeller of MCO-type centrifugal compressor |
| CN103557166A (en) * | 2013-10-15 | 2014-02-05 | 沈阳斯特机械制造有限公司 | Multistage centrifugal compressor |
| CN103807185A (en) * | 2014-02-13 | 2014-05-21 | 沈阳斯特机械制造有限公司 | Multistage centrifugal compressor capable of being detached horizontally |
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Application publication date: 20161026 |