CN207814036U - Impeller, centrifugal compressor and fuel cell system - Google Patents
Impeller, centrifugal compressor and fuel cell system Download PDFInfo
- Publication number
- CN207814036U CN207814036U CN201721849263.5U CN201721849263U CN207814036U CN 207814036 U CN207814036 U CN 207814036U CN 201721849263 U CN201721849263 U CN 201721849263U CN 207814036 U CN207814036 U CN 207814036U
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- CN
- China
- Prior art keywords
- impeller
- wheel hub
- centrifugal compressor
- backboard
- truncated cone
- 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.)
- Withdrawn - After Issue
Links
- 239000000446 fuel Substances 0.000 title claims abstract description 27
- 238000007789 sealing Methods 0.000 claims description 24
- 210000000515 tooth Anatomy 0.000 claims description 19
- 238000012856 packing Methods 0.000 claims description 9
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 238000009826 distribution Methods 0.000 claims description 3
- 238000003754 machining Methods 0.000 claims description 2
- 239000007789 gas Substances 0.000 description 10
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 4
- 239000001257 hydrogen Substances 0.000 description 4
- 229910052739 hydrogen Inorganic materials 0.000 description 4
- 108091006146 Channels Proteins 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 238000003487 electrochemical reaction Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000007800 oxidant agent Substances 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
A kind of impeller of the utility model offer, centrifugal compressor and fuel cell system.The impeller includes：Wheel hub is generally shaped like the truncated cone shape of indent and has truncated cone shape curved surface, and truncated cone shape curved surface limits the rotation axis of wheel hub, and the taper end of wheel hub is air inlet end, and butt end is air outlet slit end；The spaced apart multiple big blades of the rotation axis around wheel hub and multiple vanelets stretched out from truncated cone shape curved surface, wherein, the impeller meridian plane angle of outlet between 15 degree to 15 degree is formed in the axis projection of impeller, between big blade and the outermost edges and rotation axis relative to rotation axis of vanelets.The utility model also provides centrifugal compressor and fuel cell system with the impeller.
Description
Technical field
The utility model is related to a kind of impeller, the centrifugal compressor with impeller and with the fuel of centrifugal compressor
Battery system, especially fuel cell system for vehicles.
Background technology
Fuel cell is a kind of hair that the chemical energy of fuel and oxidant is directly changed into electric energy by electrochemical reaction
Electric installation.Since fuel cell has many advantages, such as that conventional batteries are incomparable, such as generating efficiency is high, environmental pollution
Small, low noise, fuel range are wide etc., are widely used in such as power generation of auto industry, the energy, shipping industry, aviation in recent years
The industries such as space flight, domestic power supply.
Electrochemical reaction in fuel cell is a complicated process, and oxidant therein is generally oxygen or air.
Studies have shown that the pressure of oxygen and the performance of fuel cell system have direct relation in fuel cell, improve air for air pressure
Power (i.e. the partial pressure of oxygen), can increase the energy density of fuel cell system.In addition, improving the supply gas pressure of fuel cell
System dimension can also be reduced, reduce the water content in air, maintain the water balance in fuel cell.Therefore, fuel cell system
It is needed in system dedicated for providing the gas supply subsystem of pressure-air to fuel cell.Currently, generally using propeller type centrofugal pressure
Gas supply subsystem of the contracting machine as fuel cell system.
Propeller type centrofugal compressor generally includes impeller, impeller shield and motor.The rotary shaft of impeller turns with motor
Axis is fixed and is rotated with it, and in the operational process of compressor assembly, as motor impeller rotates, air enters axially into
Impeller transfers energy to air by the rotation of impeller, and air obtains static energy and kinetic energy, with impeller rotation radially
It leaves impeller and enters in the diffuser in downstream, air reduction of speed in diffuser is pressurized, and kinetic energy is changed into static energy, further increases
Pressure is added.The forced air leaves after compressor through humidifier humidifies and eventually enters into fuel cell chan-nels.Due to impeller
It is rotating, air constantly can be pressurizeed and be pushed out, to maintain the continuous flowing of gas in compressor.
For existing centrifugal compressor, volume is larger, structure is not compact enough, it is still necessary to promote full load efficiency, flow
Keep stabilised efficiency in amount range and reduce package size and reduce number of parts etc. is improved promotion.
Utility model content
The utility model is directed to the above problems of the prior art, provide a kind of impeller, with the impeller from
Heart compressor and the fuel cell system for using the centrifugal compressor.
An embodiment according to the present utility model, impeller include：Wheel hub is generally shaped like the truncated cone shape of indent simultaneously
And there is truncated cone shape curved surface, truncated cone shape curved surface limits the rotation axis of wheel hub, and the taper end of wheel hub is air inlet end,
Butt end is air outlet slit end；The spaced apart multiple big blades of the rotation axis around wheel hub stretched out from truncated cone shape curved surface
With multiple vanelets；Wherein, in the axis projection of impeller, big blade and vanelets relative to wheel hub rotation axis most
The impeller meridian plane angle of outlet spent between -15 between 15 degree is formed between outer ledge and wheel hub rotation axis.
The streamline cross sectional shape of an embodiment according to the present utility model, big blade is S-shaped, and the streamline of vanelets is cut
Face shape is C-shaped.
An embodiment according to the present utility model, the outlet end of the radius of curvature and wheel hub of big blade and vanelets
The ratio of diameter is between 0.5 to 2.
An embodiment according to the present utility model, big blade and vanelets are uniform around the rotation axis of the wheel hub
Arrangement.
An embodiment according to the present utility model, the bottom of wheel hub is provided with sealing structure, with centrifugal compressor
In backboard between formed sealing.
An embodiment according to the present utility model, the sealing structure of wheel hub are to be extended downwardly out from the bottom of wheel hub
Round boss or annular convex platform are provided with radially multiple rings outstanding on the circumferential surface of round boss or annular convex platform
Shape seals tooth.
The diameter of an embodiment according to the present utility model, round boss or annular convex platform is between the outlet end of wheel hub
Between the 50% to 95% of diameter, the axial width of round boss or annular convex platform is between 4 to 8 millimeters, ring packing teeth
Quantity be 3 to 6.
The outlet end of a diameter of wheel hub of an embodiment according to the present utility model, round boss or annular convex platform is straight
Between the axial width of the 75% of diameter, round boss or annular convex platform is 5 millimeters, the quantity of ring packing teeth is 6.
An embodiment according to the present utility model, the shape for sealing tooth is zigzag, and tooth angle is between 50 to 75
Between degree.
An embodiment according to the present utility model, the shape for sealing tooth are arc.
The machining accuracy Ra of an embodiment according to the present utility model, impeller is less than 1.6 microns.
The utility model also provides a kind of centrifugal compressor comprising：According to any claim in claim 1-10
The impeller；Motor, for providing power for the rotation of impeller；Backboard is fixed on motor field frame；Impeller shaft,
It passes through the backboard and is fixed with the motor rotary shaft of motor, and impeller is fixed on impeller shaft to turn with impeller shaft
It is dynamic；Impeller shield is fixed on backboard and impeller is made to be located at it between backboard；Wherein, the sealing structure and backboard of impeller
Between form sealing, and impeller shaft and motor rotary shaft are integrated.
The shell of an embodiment according to the present utility model, backboard and motor is integrated.
An embodiment according to the present utility model is interference fit between impeller and impeller shaft.
An embodiment according to the present utility model, impeller shaft end have threaded portion, and nut tightening is in threaded portion
On impeller to be fixed on impeller shaft, wherein the direction of rotation of impeller and nut to loosen direction opposite.
An embodiment according to the present utility model, impeller shield include：Axial admission mouth is arranged in impeller shield
Center；The peripheral position in impeller shield is arranged in tangential exhaust pipe；Multiple bolt mounting portions are arranged in impeller
The peripheral position of shield is simultaneously corresponding with the position of bolt mounting portion on backboard and motor field frame, so as to utilize bolt
Impeller shield, backboard and motor field frame are fixed together simultaneously；Wherein, the multiple bolt mounting portion is in impeller shield
Periphery uneven distribution.
An embodiment according to the present utility model, the shape of exhaust pipe are the combination of straight line and conic section.
An embodiment according to the present utility model, the truncated cone shape curved surface of wheel hub and the surface of backboard are smooth mistakes
It crosses.
The utility model also provides a kind of fuel cell system comprising the centrifugal compressed according to embodiment of above
Machine and filter device, fuel cell pack, cooling system, humidifier, hydrogen supply, hydrogen recovery unit and control system etc..
Impeller according to the present utility model, the relative diffusion rates that the arrangement mode of blade makes gas be discharged are more equal
It is even, and its nominal diameter is less than multistage centrifugal compressor blade maximum gauge under same traffic and pressure ratio.It is new according to this practicality
The centrifugal compressor of type, since its impeller shaft and motor rotary shaft are integrated, and impeller, impeller shield and motor
Be assembled together, so its structure is compacter, centrifugal compressor it is smaller, amount of parts is reduced, and is significantly reduced
Production and maintenance cost.
Description of the drawings
The above-mentioned and other purposes, feature, advantage and function of the utility model in order to better understand, can be with refer to the attached drawing
Shown in preferred embodiment.Identical reference numeral refers to identical component in attached drawing.Those skilled in the art should manage
Solution, attached drawing are intended to schematically illustrate preferred embodiments of the present invention, and all parts are not necessarily drawn to scale in figure.
Figure 1A -1C show the impeller of preferred embodiment according to the present utility model；
Fig. 2A -2B show the exemplary axis plane projection of the blade of the impeller of preferred embodiment according to the present utility model
The case where figure, wherein Fig. 2A shows when the impeller meridian plane angle of outlet is positive value, Fig. 2 B show that the impeller meridian plane angle of outlet is negative value
When the case where；
Fig. 3 is the partial enlarged view of Figure 1B, shows the sealing structure of impeller；
Fig. 4 A-4B show the centrifugal compressor of preferred embodiment according to the present utility model；
Fig. 5 is the partial enlarged view of Fig. 4 B, shows the fixed form between impeller and impeller shaft；
Fig. 6 A-6B show the impeller shield of preferred embodiment according to the present utility model；
Fig. 7 is another partial enlarged view of Fig. 4 B, shows one between the truncated cone shape curved surface of wheel hub and back plate surface
The transition of cause property.
Specific implementation mode
In the following, the impeller of the utility model, the centrifugal compressor with the impeller and use is described in detail with reference to the drawings
The fuel cell system of the centrifugal compressor.As described herein is only preferred embodiment according to the present utility model,
Those skilled in the art can expect realizing on the basis of the preferred embodiment other modes of the utility model,
The other modes equally fall into the scope of the utility model.
The directional terminology, such as "upper", "lower", "left", "right" etc. of middle appearance described in detail below refer in specific attached drawing
Orientation.
The side view of the impeller 10 of a preferred embodiment according to the present utility model, section view is shown respectively in Figure 1A -1C
Figure and vertical view.As shown, impeller 10 includes wheel hub 11 and the multiple blades extended from wheel hub 11.Wherein, pass through figure
1B as it can be seen that the truncated cone shape for being generally shaped like concave surface of wheel hub 11 and have truncated cone shape curved surface S, multiple big blades 12
It is stretched out from the truncated cone shape curved surface S with multiple vanelets 13, and surrounds the rotation of impeller or wheel hub on said surface
Axis A-A is spaced apart, that is, as shown in Figure 1 C, each big blade 12 is between two adjacent vanelets 13, each leaflet
Piece 13 is between two adjacent big blades 12.Referring to Figure 1B, the top thinner end of wheel hub 11 is air inlet end, lower part compared with
Butt end is the outlet end after air pressurized, and the radius of outlet end is r1.Wherein, each big 13 edge of blade 12 and each vanelets
The section of respective flow-line interception is streamline section, and each shape of the big blade 12 in its streamline section is S-shaped, each vanelets
13 shape in its streamline section is C-shaped.
Fig. 2A -2B are exemplarily illustrated the axis projection of blade, by axis projection as it can be seen that the impeller of each blade
The meridian plane angle of outlet be α, the impeller meridian plane angle of outlet refer to blade axis projection in relative to the outermost of axis A-A
The angle formed between lateral edges and axis A-A, in preferred embodiment according to the present utility model, the outlet of impeller meridian plane
Angle α is spent between -15 between 15 degree.The case where being shown in Fig. 2A when impeller meridian plane angle of outlet α is positive value, when impeller meridian
When face angle of outlet α is negative value, the angle is in opposite direction, as shown in Figure 2 B.Need exist for the axis projection of impeller into
Row explanation, in the art, since impeller is the revolving body rotated about the axis, so usually with cylindrical-coordinate system describe impeller and
The shape of blade, so-called " axial plane (also referred to as meridian plane) " refers to by impeller axis (being in the present invention axis A-A)
Plane, axis projection refer to that the every bit on blade is rotated to the figure formed on the axial plane around axis A-A.
In a preferred embodiment according to the present utility model, the song at 13 different parts of big blade 12 and vanelets
The outlet end diameter 2r of rate radius and wheel hub 111Ratio between 0.5 to 2.
In a preferred embodiment according to the present utility model, big blade 12 and vanelets 13 are equal around axis A-A
Even arrangement, quantity are eight, and certainly, quantity is not limited thereto, can be more or less.
Figure 1A and 1B are returned to, in a preferred embodiment according to the present utility model, the bottom of wheel hub 11 is provided with
Sealing is formed between sealing structure 14, with the backboard in centrifugal compressor, to reduce thrust bearing institute in centrifugal compressor
The thrust born.Further, the sealing structure 14 can be the round boss extended downwardly out from the bottom of wheel hub 11,
Radially multiple ring packing teeths 141 outstanding are provided on the circumferential surface of round boss, wherein the radius of round boss
For r2, diameter 2r2Between the outlet end diameter 2r of wheel hub150% to 95% between, the axial width H of round boss is between 4
To between 8 millimeters, the quantity of ring packing teeth is 3 to 6.
In further embodiment according to the present utility model, the diameter 2r of round boss2Can be going out for wheel hub
Mouth end diameter 2r175%, the axial width H of round boss can be 5 millimeters, and the quantity of ring packing teeth 141 can be 6
It is a.
In other embodiment according to the present utility model, sealing structure 14 can not be round boss but convex annular
Platform, radially multiple ring packing teeths 141 outstanding can be arranged on the outer circumferential surface of annular convex platform as described above.
As shown in figure 3, in a preferred embodiment according to the present utility model, the shape of sealing tooth 141 is sawtooth
Shape, tooth angle β is between 50 to 75 degree.Certainly, the shape for sealing tooth can also be other shapes, such as arc.
In preferred embodiment according to the present utility model, the surface roughness Ra of impeller is less than 1.6 microns.
On the other hand, the utility model also provides a kind of centrifugal compressor.As shown in figs. 4 a-4b, according to the utility model
The centrifugal compressor of a preferred embodiment include impeller 10 according to the above embodiment, further include for being leaf
The rotation of wheel 10 provides the motor 20 of power, and further, centrifugal compressor further includes：Be fixed on motor field frame 22 or
The backboard 30 that person is integrally formed therewith；It is fixed together across backboard 30 and with the motor rotary shaft of motor 21 or and motor
The integrally formed impeller shaft 40 of shaft 21, impeller 10 are fixed on impeller shaft 40 to rotate with it；And impeller shield 50,
It is fixed on backboard 30 and impeller 10 is made to be located at it between backboard 30；Wherein, as described above, the sealing knot of impeller 10
Sealing is formed between structure 14 and backboard 30.
In a preferred embodiment according to the present utility model, match for interference between impeller 10 and impeller shaft 40
It closes.In further preferred embodiment according to the present utility model, as shown in figure 5, the end of impeller shaft 40 has spiral shell
Line portion, nut 41 are tightened on the threaded portion impeller 10 being fixed on impeller shaft 40, and nut 41 exists in order to prevent
It is loosened during use, it is preferable that the direction that loosens of nut 41 is configured to the direction of rotation of impeller 10 on the contrary, in this way, spiral shell
Mother 41 will not only loosen, instead can be more and more tighter with the use of centrifugal compressor.
In a preferred embodiment according to the present utility model, as shown in figures 6 a-6b, impeller shield 50 includes being located at
The axial admission mouth 51 of the center portion thereof position flowed into for air is substantially tangentially arranged positioned at its peripheral part so that air adds
The exhaust pipe 52 flowed out after pressure；And multiple bolt mounting portions 53, bolt mounting portion 53 are arranged in the periphery of impeller shield 50 position
It sets, when impeller shield is mounted on centrifugal compressor, on the position of bolt mounting portion 53 and backboard 30 and motor field frame 22
The position of bolt mounting portion overlap, so as to using the bolt that extends there through simultaneously by impeller shield 50, backboard 30 and
Motor field frame 22 is fixed together.Further, as shown in Figure 6B, the multiple bolt mounting portion 53 is in impeller shield 50
Periphery is uneven distribution, can play the role of positioning position of the exhaust pipe 52 relative to centrifugal compressor in this way, prevent
Setup error.
In a preferred embodiment according to the present utility model, the shape of exhaust pipe 52 is straight line and conic section
In conjunction with.
By Fig. 4 B as it can be seen that be on backboard 30 do not have it is vaned, to impeller shield 50 outside bump 54 and backboard
30 form vaneless diffuser part, and gas is at the channel for flowing through diffuser portion, since cross section of fluid channel increases, the gas of front
Molecular flow speed reduces, and the gas molecule that subsequent gas molecule constantly shoves forwardly makes most kinetic energy of gas turn again
Become static energy, that is, plays the role of further being pressurized.As shown in fig. 7, according to the present utility model further preferred
In embodiment, truncated cone shape curved surface S the having a smooth surface transition to backboard 30 of wheel hub, in other words, the profile of wheel hub 11
It smoothly transits to the wall profile of vaneless diffuser part, the two is almost the same or alignment, and air can be swimmingly from leaf
Wheel comes diffuser portion, can optimize the diffusion action of diffuser portion in this way.
Another aspect, the utility model also provide a kind of fuel cell system comprising according to embodiment of above
Centrifugal compressor and filter device, fuel cell pack, cooling system, humidifier, hydrogen supply, hydrogen recovery unit and control
System processed etc..
The scope of protection of the utility model is only defined by the claims.Have benefited from the introduction of the utility model, this field skill
Art personnel will readily recognize that can using the alternative structure of structure disclosed in the utility model as feasible alternate embodiments, and
Embodiment disclosed in the utility model can be combined to generate new embodiment, they equally fall into appended right
In the range of claim.
Claims (19)
1. a kind of impeller, which is characterized in that the impeller includes：
Wheel hub is generally shaped like the truncated cone shape of indent and has truncated cone shape curved surface, the truncated cone shape curved surface limit
The taper end of the rotation axis of the fixed wheel hub, the wheel hub is air inlet end, and butt end is air outlet slit end；
From the truncated cone shape curved surface stretch out the spaced apart multiple big blades of the rotation axis around the wheel hub with it is more
A vanelets；
Wherein, in the axis projection of the impeller, the outermost relative to the rotation axis of big blade and vanelets
The impeller meridian plane angle of outlet spent between -15 between 15 degree is formed between edge and the rotation axis.
2. impeller according to claim 1, which is characterized in that each big blade and each vanelets are along respective flow-line interception
Section be streamline section, each big shape of the blade in its streamline section is S-shaped, and each vanelets are in its streamline section
Shape be C-shaped.
3. impeller according to claim 2, which is characterized in that the radius of curvature of the big blade and vanelets and the wheel
The ratio of the diameter of the outlet end of hub is between 0.5 to 2.
4. impeller according to claim 3, which is characterized in that the big blade and vanelets surround the rotation of the wheel hub
Axis is evenly arranged.
5. impeller according to claim 4, which is characterized in that the bottom of the wheel hub is provided with sealing structure, the wheel
Sealing is formed between backboard in the sealing structure and centrifugal compressor of hub.
6. impeller according to claim 5, which is characterized in that the sealing structure of the wheel hub is downward from the bottom of wheel hub
The round boss or annular convex platform extended is provided with radially on the circumferential surface of the round boss or annular convex platform
Multiple ring packing teeths outstanding.
7. impeller according to claim 6, which is characterized in that the diameter of the round boss or annular convex platform is between described
Between the 50% to 95% of the outlet end diameter of wheel hub, the axial width of the round boss or annular convex platform is between 4 to 8 millimeters
Between, the quantity of the ring packing teeth is 3 to 6.
8. impeller according to claim 7, which is characterized in that a diameter of wheel of the round boss or annular convex platform
Between the axial width of the 75% of the outlet end diameter of hub, the round boss or annular convex platform is 5 millimeters, the ring packing
The quantity of tooth is 6.
9. impeller according to claim 8, which is characterized in that the shape of the sealing tooth is zigzag, and tooth angle is situated between
Between 50 to 75 degree.
10. impeller according to claim 8, which is characterized in that the shape of the sealing tooth is arc.
11. impeller according to claim 9, which is characterized in that the machining accuracy Ra of the impeller is less than 1.6 microns.
12. a kind of centrifugal compressor, which is characterized in that the centrifugal compressor includes：
According to impeller described in any claim in claim 1-11；
Motor, for providing power for the rotation of impeller；
Backboard is fixed on motor field frame；
Impeller shaft passes through the backboard and is fixed with the motor rotary shaft of motor, and the impeller is fixed on impeller shaft
On to be rotated with impeller shaft；
Impeller shield is fixed on backboard and impeller is made to be located at it between backboard；
Wherein, sealing is formed between the sealing structure and backboard of impeller, and impeller shaft and motor rotary shaft are integrated.
13. centrifugal compressor according to claim 12, which is characterized in that the shell of the backboard and motor is one
's.
14. centrifugal compressor according to claim 12, which is characterized in that be between the impeller and the impeller shaft
Interference fit.
15. centrifugal compressor according to claim 14, which is characterized in that the impeller shaft end has threaded portion,
Nut tightening is on the threaded portion impeller to be fixed on impeller shaft, wherein the direction of rotation of the impeller with it is described
Nut to loosen direction opposite.
16. centrifugal compressor according to claim 12, which is characterized in that the impeller shield includes：
Axial admission mouth is arranged in the center of impeller shield；
The peripheral position in impeller shield is arranged in tangential exhaust pipe；
Multiple bolt mounting portions are arranged the peripheral position in impeller shield and are installed with the bolt on backboard and motor field frame
The position in portion is corresponding, so as to which impeller shield, backboard and motor field frame are fixed together simultaneously using bolt；
Wherein, periphery uneven distribution of the multiple bolt mounting portion in impeller shield.
17. centrifugal compressor according to claim 16, which is characterized in that the shape of the exhaust pipe be straight line with it is secondary
The combination of curve.
18. centrifugal compressor according to claim 17, which is characterized in that the truncated cone shape curved surface of the wheel hub and institute
The surface for stating backboard smoothly transits.
19. a kind of fuel cell system comprising according to the centrifugal compressed described in any claim in claim 12-18
Machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721849263.5U CN207814036U (en) | 2017-12-26 | 2017-12-26 | Impeller, centrifugal compressor and fuel cell system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721849263.5U CN207814036U (en) | 2017-12-26 | 2017-12-26 | Impeller, centrifugal compressor and fuel cell system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207814036U true CN207814036U (en) | 2018-09-04 |
Family
ID=63330685
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721849263.5U Withdrawn - After Issue CN207814036U (en) | 2017-12-26 | 2017-12-26 | Impeller, centrifugal compressor and fuel cell system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207814036U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107989823A (en) * | 2017-12-26 | 2018-05-04 | 北京伯肯节能科技股份有限公司 | Impeller, centrifugal compressor and fuel cell system |
| CN114768084A (en) * | 2022-04-25 | 2022-07-22 | 中科润腾医疗科技(苏州)有限公司 | Spiral centrifugal impeller and blood pump |
-
2017
- 2017-12-26 CN CN201721849263.5U patent/CN207814036U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107989823A (en) * | 2017-12-26 | 2018-05-04 | 北京伯肯节能科技股份有限公司 | Impeller, centrifugal compressor and fuel cell system |
| CN107989823B (en) * | 2017-12-26 | 2023-12-01 | 北京伯肯节能科技股份有限公司 | Impeller, centrifugal compressor, and fuel cell system |
| CN114768084A (en) * | 2022-04-25 | 2022-07-22 | 中科润腾医疗科技(苏州)有限公司 | Spiral centrifugal impeller and blood pump |
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