CN112664470B - High-speed air compressor convenient to heat dissipation - Google Patents
High-speed air compressor convenient to heat dissipation Download PDFInfo
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- CN112664470B CN112664470B CN202011555042.3A CN202011555042A CN112664470B CN 112664470 B CN112664470 B CN 112664470B CN 202011555042 A CN202011555042 A CN 202011555042A CN 112664470 B CN112664470 B CN 112664470B
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- rotating shaft
- air
- heat dissipation
- shell
- support ring
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- 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
Abstract
The invention discloses a high-speed air compressor convenient for heat dissipation, and relates to the technical field of fuel cell automobiles. The invention comprises that both ends of a shell are provided with support rings for supporting a rotating shaft; the support ring is fixedly connected with the inner wall of the shell through a plurality of support rods; a groove is arranged on the inner wall of the support ring along the circumferential direction; a first air guide channel is arranged in the shell; the supporting rod is provided with a second air guide channel; one end of the first air guide channel is communicated with the air outlet pipeline, and the other end of the first air guide channel is communicated with the second air guide channel; the second air guide channel is communicated with the groove. The invention leads a part of compressed high-pressure gas to be led between the support ring and the rotating shaft, and forms a gas film between the support ring and the rotating shaft, so that the rotating shaft is not contacted with the support ring in the rotating process, thereby effectively reducing the friction force between the support ring and the rotating shaft and improving the overall performance of the compressor.
Description
Technical Field
The invention belongs to the technical field of fuel cell automobiles, and particularly relates to a high-speed air compressor convenient for heat dissipation.
Background
The fuel cell vehicle is a kind of electric vehicle, and the energy of the battery is directly converted into electric energy through the chemical action of hydrogen and oxygen, rather than through combustion. The chemical reaction process of the fuel cell does not produce harmful products, so the fuel cell vehicle is a pollution-free vehicle, and the energy conversion efficiency of the fuel cell is 2 to 3 times higher than that of an internal combustion engine, so the fuel cell vehicle is an ideal vehicle in the aspects of energy utilization and environmental protection.
The air compressor is a common device for supplying oxygen to the fuel cell, and compared with a common compressor, the air compressor of the hydrogen-oxygen fuel cell automobile has the advantages that the rotating speed is higher, the friction force between the rotating shaft and the support is larger in the rotating process, the support is easy to wear, the rotating shaft is shaken in the rotating process, and the normal work of the air compressor is influenced.
Disclosure of Invention
The invention aims to provide a high-speed air compressor convenient for heat dissipation, which is characterized in that a support ring supporting a rotating shaft is provided with a groove, high-pressure air compressed by air is introduced into a part of the groove, an air film is formed between a support and the rotating shaft, the rotating shaft is not contacted with the support, the friction force between the rotating shaft and the support in the rotating process can be effectively reduced, and support abrasion is avoided.
In order to solve the technical problems, the invention is realized by the following technical scheme:
the invention relates to a high-speed air compressor convenient for heat dissipation, which comprises a shell, a rotating shaft, an air inlet assembly and a compression assembly, wherein the shell is a cylindrical barrel with openings at two ends; the rotating shaft is rotatably arranged in the shell, and the axis of the rotating shaft is superposed with the central line of the shell; the air inlet components are arranged at two ends of the rotating shaft; the air inlet assembly is used for introducing outside air into the shell; the compression assembly is arranged in the middle of the rotating shaft and used for compressing air entering the shell and discharging the compressed air from an air outlet in the middle of the shell, which is opposite to the compression assembly; the exhaust port is communicated with an exhaust pipeline; the two ends of the shell are respectively provided with a support ring for supporting the rotating shaft; the support ring is fixedly connected with the inner wall of the shell through a plurality of support rods; a groove is formed in the inner wall of the support ring along the circumferential direction; a first air guide channel is formed in the shell; a second air guide channel is formed in the supporting rod; one end of the first air guide channel is communicated with the air outlet pipeline, and the other end of the first air guide channel is communicated with the second air guide channel; the second air guide channel is communicated with the groove;
the fuel cell module further comprises a heat dissipation shell, the heat dissipation shell is sleeved on the air outlet pipeline and forms a heat dissipation cavity with the periphery of the air outlet pipeline, and the heat dissipation cavity is used for being communicated with a water drainage hole pipe of the fuel cell so that water discharged by the fuel cell can enter the heat dissipation cavity;
and the upper part of the heat dissipation cavity is provided with an exhaust hole, and the exhaust hole is used for exhausting water vapor evaporated in the heat dissipation cavity.
Further, the radius of the inner ring of the support ring is 0.3-0.5mm larger than that of the rotating shaft.
Further, the support ring has a first annular support and a second annular support; the first annular support part is positioned on one side of the support ring away from the compression assembly; the second annular support part is positioned on one side of the support ring close to the compression assembly; the groove is formed between the first annular support portion and the second annular support portion.
Further, an inner ring diameter of the first annular support portion is smaller than an inner ring diameter of the second annular support portion.
Furthermore, the air inlet assemblies are multiple; a plurality of the air inlet components are arranged at equal intervals along the axis direction of the rotating shaft.
Further, the air inlet assembly comprises a plurality of air inlet blades; a plurality of the air inlet blades are uniformly distributed along the circumferential direction of the rotating shaft.
Further, the compression assembly includes a circular baffle; the circular partition plate is coaxially and fixedly arranged in the middle of the rotating shaft; a plurality of centrifugal blades are arranged on both sides of the circular partition plate;
an induced draft cover is fixedly arranged in the shell; the number of the induced draft hoods is two; the two induced air covers are respectively positioned on two sides of the circular partition plate; the induced draft hood is provided with a conical hole; the central line of the conical hole is superposed with the axis of the rotating shaft; the aperture of the conical hole is gradually increased along the direction far away from the circular partition plate.
Furthermore, one end of the centrifugal blade is fixedly connected with the rotating shaft.
Furthermore, a compression cavity is formed between the circular partition plate and the induced draft cover.
Furthermore, one end of the rotating shaft extends out of the shell to be connected with a driving device.
The invention has the following beneficial effects:
the invention leads a part of compressed high-pressure air to the groove on the inner wall of the support ring through the first air guide channel and the second air guide channel; high-pressure gas forms the gas film between support ring and pivot, makes the pivot not contact with the support ring at the pivoted in-process, the effectual frictional force that has reduced between pivot and the support ring, and the pivot can change faster, the back shaft is also difficult wearing and tearing, has improved the wholeness ability of compressor.
Of course, it is not necessary for any one product that embodies the invention to achieve all of the above advantages simultaneously.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a front view of a high speed air compressor of the present invention facilitating heat dissipation;
FIG. 2 isbase:Sub>A cross-sectional view A-A of FIG. 1;
FIG. 3 is a cross-sectional view of the high speed air compressor with heat removal facilitated by the present invention without the heat dissipating housing installed;
FIG. 4 is a schematic view of an installation structure of the support ring and the baffle;
FIG. 5 is a schematic view of the mounting structure of the housing and the support ring;
FIG. 6 is a schematic view of the installation structure of the rotating shaft, the air intake assembly and the compression assembly;
in the drawings, the components represented by the respective reference numerals are listed below:
1-shell, 2-rotating shaft, 3-air inlet component, 4-compression component, 101-air outlet, 5-air outlet pipeline, 6-support ring, 7-support rod, 601-groove, 102-first air guide channel, 701-second air guide channel, 602-first annular support part, 603-second annular support part, 301-air inlet blade, 401-circular partition plate, 402-centrifugal blade, 8-induced air cover, 801-conical hole, 9-compression cavity, 10-baffle plate, 11-heat dissipation shell, 12-heat dissipation cavity and 13-air outlet.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "inner wall," "lower," "longitudinal," "up-down," "upper," "lower," "inner," and the like are used in an orientation or positional relationship that is merely for convenience in describing and simplifying the description, and do not indicate or imply that the referenced components or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be considered as limiting the present invention.
Referring to fig. 1-6, the present invention is a high speed air compressor convenient for heat dissipation, including a housing 1, a rotating shaft 2, an air intake component 3 and a compression component 4, wherein the housing 1 is a cylindrical cylinder with two open ends; the rotating shaft 2 is rotatably arranged in the shell 1, and the axis of the rotating shaft 2 is superposed with the central line of the shell 1; six air inlet components 3 are arranged; every three are in one group; two groups of the rotating shafts are respectively fixedly arranged at two ends of the rotating shaft 2; the air inlet components 3 are arranged at equal intervals along the axial direction of the rotating shaft 2; the air inlet component 3 is used for introducing outside air into the shell 1; the provision of a plurality of air inlet assemblies 3 enables a gradual initial compression of the air entering the housing 1. The compression component 4 is arranged in the middle of the rotating shaft 2, and an exhaust port 101 is formed in the position, opposite to the compression component 4, of the shell 1; the compression component 4 is used for compressing air entering the shell 1 and discharging the compressed air from the air outlet 101 into an air outlet pipeline 5 connected with the air outlet 101, and the hydrogen-oxygen fuel cell is supplied with air through the air outlet pipeline 5; the two ends of the shell 1 are respectively provided with a support ring 6 for supporting the rotating shaft 2; the support ring 6 is fixedly connected with the inner wall of the shell 1 through four support rods 7, wherein at least one support rod 7 is positioned below the rotating shaft 2; a groove 601 is formed in the inner wall of the support ring 6 along the circumferential direction; a first air guide channel 102 is formed in the shell 1; the supporting rod 7 is provided with a second air guide channel 701 along the length direction; one end of the first air guide channel 102 is communicated with the air outlet pipeline 5, and the other end of the first air guide channel is communicated with the second air guide channel 701; the second air guide passage 701 communicates with the recess 601. One end of the rotating shaft 2 extends out of the shell 1 to be connected with a driving device, and the driving device can be a motor. The fuel cell module further comprises a heat dissipation shell 11, wherein the heat dissipation shell 11 is sleeved on the air outlet pipeline 5 and forms a heat dissipation cavity 12 with the periphery of the air outlet pipeline 5, and the heat dissipation cavity 12 is used for being communicated with a drainage hole pipe of the fuel cell so that water discharged by the fuel cell can enter the heat dissipation cavity 12; the upper part of the heat dissipation cavity 12 is provided with an exhaust hole 13, and the exhaust hole 13 is used for exhausting water vapor evaporated in the heat dissipation cavity. During the specific use, the water that oxyhydrogen fuel cell produced discharges in heat dissipation chamber 12 to evaporate in heat dissipation chamber 12, cool down the air compressor through the endothermic principle of evaporation, simultaneously, can also prevent that water from discharging with liquid mode and the wet and slippery problem in road surface that leads to.
In the specific working process, the rotating shaft 2 is driven to rotate under the action of the driving device, and the air inlet component 3 rotates along with the rotating shaft 2 to drive the external air to flow to the compression component 4; air is compressed by the compression assembly 4 and then discharged into the air outlet pipeline 5 through the air outlet 101, the hydrogen-oxygen fuel cell is supplied with air through the air outlet pipeline 5, and the compressed air enters the air outlet pipeline 5, flows to the hydrogen-oxygen fuel cell, and also partially enters the groove 601 through the first air guide channel 102 and the second air guide channel 701; when the high-pressure gas entering the groove 601 flows out from the gap between the rotating shaft 2 and the support ring 6, a gas film is gradually formed between the rotating shaft 2 and the support ring 6, so that the rotating shaft 2 is not in contact with the support ring 6, the friction force between the rotating shaft 2 and the support ring 6 can be effectively reduced, the rotating shaft 2 can rotate more quickly, and meanwhile, the service life of the support ring 6 can also be prolonged.
Preferably, the radius of the inner ring of the support ring 6 is 0.3-0.5mm larger than the radius of the rotating shaft 2, in order to better enable the high-pressure gas entering the support ring 6 to jack the rotating shaft 2 up between the support ring 6 and the rotating shaft 2 to form a gas film, a baffle plate 10 can be arranged in a groove 601 below the rotating shaft 2; the number of the baffle plates 10 is two, and the two baffle plates 10 are respectively positioned at two sides of the support rod 7 below the rotating shaft 2. In a static state, because the gap between the support ring 6 and the rotating shaft 2 is gradually reduced from top to bottom, by arranging the baffle plate 10, the gas outflow speed of the lower gap can be smaller, the gas outflow resistance is greater than that of the upper gap, so that the gas pressure of the lower gap is greater than that of the upper gap, a pressure difference is generated to drive the rotating shaft 2 to slightly lift, and an air film is formed in the lower gap so that the bottommost part of the rotating shaft 2 is not contacted with the support ring 6 any more.
Preferably, the support ring 6 has a first annular support 602 and a second annular support 603; the first annular support 602 is located on the side of the support ring 6 remote from the compression assembly 4; the second annular support 603 is located on the side of the support ring 6 adjacent to the compression assembly 4; the first annular support 602 and the second annular support 603 form the groove 601 therebetween. The inner ring diameter of the first annular support 602 is smaller than the inner ring diameter of the second annular support 603. In this way, more high-pressure gas can flow out from the gap between the second annular support portion 603 and the rotating shaft 2 and flow into the housing 1 again, and waste of high-pressure air can be reduced.
Preferably, the air intake assembly 3 comprises six air intake vanes 301; six air inlet blade 301 follows the week side direction evenly distributed of pivot 2.
Preferably, the compression assembly 4 comprises a circular baffle 401; the circular partition plate 401 is coaxially and fixedly installed in the middle of the rotating shaft 2 (namely, the center line of the circular partition plate 401 is overlapped with the center line of the rotating shaft 2, and the circular partition plate 401 is fixedly installed in the middle of the rotating shaft 2 in the shell 1); a plurality of centrifugal blades 402 are arranged on both sides of the circular partition 401; the circular partition plates 401 can effectively prevent the air flows flowing in from the two ends of the rotating shaft 2 from interfering with each other, so that the air can enter the compression cavity 9 more easily, and in addition, the air inlet assemblies 3 with the same number are arranged on the two sides of the circular partition plates 401 at equal intervals, so that the air quantity entering the shell from the two ends of the shell 1 and flowing to the circular partition plates 401 is the same; because of circular baffle 401's both sides are high-pressure gas, when circular baffle 401 is not at casing 1's axial intermediate position, circular baffle 401's both sides can produce pressure differential, and under the effect of pressure differential, circular baffle 401 can readjust casing 1's axial intermediate position to it is spacing not to need carry out the axial to countershaft 2. An induced draft cover 8 is fixedly arranged in the shell 1; the number of the induced draft hoods 8 is two; the two induced draft hoods 8 are respectively positioned on two sides of the circular partition plate 401; the induced draft cover 8 is provided with a conical hole 801; the central line of the conical hole 801 is coincident with the axis of the rotating shaft 2; the diameter of the tapered hole 801 gradually increases in a direction away from the circular partition 401. Due to the design, when the air flowing to the circular partition 401 under the action of the air inlet assembly 3 meets the induced draft cover 8, the air can be further compressed in the tapered hole 801 of the induced draft cover 8.
Preferably, one end of the centrifugal blade 402 is fixedly connected to the rotating shaft 2. Preferably, a compression chamber 9 is formed between the circular partition 401 and the induced draft cover 8. The compression chamber 9 communicates with the tapered hole 801 of the draft cover 8 on the corresponding side. The entering air can be further compressed through the compression chamber 8, and the compression degree of the air is improved. During specific work, air moves from the circular partition plates 401 at the two ends of the rotating shaft 2 under the action of the air inlet blades 301 of the air inlet assembly 3, the air is gradually compressed in the moving process, the air is further compressed when reaching the conical shape 801 of the induced draft cover 8, the compressed air enters the compression cavity 9 along with the rotation of the centrifugal blades 402 to be further compressed, and the compressed air is thrown to the exhaust port 101 under the action of centrifugal force and enters the air outlet pipeline 5 through the exhaust port 101.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise forms disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (8)
1. A high-speed air compressor convenient for heat dissipation is used for a fuel cell automobile and comprises a shell (1), a rotating shaft (2), an air inlet assembly (3) and a compression assembly (4), wherein the shell (1) is a cylindrical barrel with two open ends; the rotating shaft (2) is rotatably arranged in the shell (1), and the axis of the rotating shaft (2) is superposed with the central line of the shell (1); the air inlet components (3) are arranged at two ends of the rotating shaft (2); the air inlet component (3) is used for introducing outside air into the shell (1); the compression assembly (4) is arranged in the middle of the rotating shaft (2) and is used for compressing air entering the shell (1) and discharging the compressed air from an air outlet (101) in the middle of the shell (1) opposite to the compression assembly (4); the exhaust port (101) is communicated with an exhaust pipeline (5); the two ends of the shell (1) are respectively provided with a support ring (6) for supporting the rotating shaft (2); the support ring (6) is fixedly connected with the inner wall of the shell (1) through a plurality of support rods (7); a groove (601) is formed in the inner wall of the support ring (6) along the circumferential direction; a first air guide channel (102) is arranged in the shell (1); a second air guide channel (701) is formed in the support rod (7); one end of the first air guide channel (102) is communicated with the air outlet pipeline (5), and the other end of the first air guide channel is communicated with the second air guide channel (701); the second air guide channel (701) is communicated with the groove (601);
the support ring (6) has a first annular support (602) and a second annular support (603); the first annular support (602) is located on the side of the support ring (6) remote from the compression assembly (4); the second annular support (603) is located on the side of the support ring (6) close to the compression assembly (4); the first annular support (602) and the second annular support (603) form the groove (601) therebetween; the inner ring diameter of the first annular support (602) is smaller than the inner ring diameter of the second annular support (603);
the fuel cell water heater further comprises a heat dissipation shell (11), the heat dissipation shell (11) is sleeved on the air outlet pipeline (5) and forms a heat dissipation cavity (12) with the periphery of the air outlet pipeline (5), and the heat dissipation cavity (12) is used for being communicated with a drainage hole pipe of a fuel cell so that water discharged by the fuel cell can enter the heat dissipation cavity (12);
the upper part of the heat dissipation cavity (12) is provided with an exhaust hole (13), and the exhaust hole (13) is used for exhausting water vapor evaporated in the heat dissipation cavity.
2. High-speed air compressor facilitating heat dissipation according to claim 1, characterised in that the radius of the inner ring of the support ring (6) is 0.3-0.5mm larger than the radius of the rotor shaft (2).
3. The high-speed air compressor convenient for heat dissipation according to claim 1, wherein the air intake assembly (3) is provided in plurality; a plurality of the air inlet components (3) are arranged at equal intervals along the axial direction of the rotating shaft (2).
4. A high speed air compressor facilitating heat dissipation according to claim 3, wherein the air intake assembly (3) comprises a plurality of air intake blades (301); a plurality of the air inlet blades (301) are uniformly distributed along the circumferential direction of the rotating shaft (2).
5. A high-speed air compressor facilitating heat dissipation according to claim 1, wherein the compression assembly (4) comprises a circular partition (401); the circular partition plate (401) is coaxially and fixedly arranged in the middle of the rotating shaft (2); a plurality of centrifugal blades (402) are arranged on both sides of the circular partition plate (401);
an induced draft cover (8) is fixedly arranged in the shell (1); the number of the induced draft hoods (8) is two; the two induced draft hoods (8) are respectively positioned on two sides of the circular partition plate (401); the induced draft cover (8) is provided with a conical hole (801); the central line of the conical hole (801) is superposed with the axis of the rotating shaft (2); the diameter of the conical hole (801) is gradually increased along the direction away from the circular partition plate (401).
6. The high-speed air compressor convenient for heat dissipation according to claim 5, wherein one end of the centrifugal blade (402) is fixedly connected with the rotating shaft (2).
7. The high-speed air compressor facilitating heat dissipation according to claim 6, wherein a compression chamber (9) is formed between the circular partition plate (401) and the induced draft cover (8).
8. A high-speed air compressor facilitating heat dissipation according to claim 1, wherein one end of the rotary shaft (2) extends out of the housing (1) to be connected to a driving device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011555042.3A CN112664470B (en) | 2020-12-24 | 2020-12-24 | High-speed air compressor convenient to heat dissipation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011555042.3A CN112664470B (en) | 2020-12-24 | 2020-12-24 | High-speed air compressor convenient to heat dissipation |
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| Publication Number | Publication Date |
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| CN112664470A CN112664470A (en) | 2021-04-16 |
| CN112664470B true CN112664470B (en) | 2022-12-06 |
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| CN202011555042.3A Active CN112664470B (en) | 2020-12-24 | 2020-12-24 | High-speed air compressor convenient to heat dissipation |
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Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB191328909A (en) * | 1913-12-15 | 1914-09-24 | British Thomson Houston Co Ltd | Improvements in and relating to Centrifugal Compressors. |
| CN103148019B (en) * | 2013-03-06 | 2016-05-04 | 贵阳远大风机制造有限公司 | Two air intake high-pressure high-flow cement in vertical kiln centrifugal fans |
| CN105987018A (en) * | 2015-02-28 | 2016-10-05 | 程相杰 | Centrifugal fan with multiple groups of fan blades |
| US10458432B2 (en) * | 2017-04-25 | 2019-10-29 | Garrett Transportation I Inc. | Turbocharger compressor assembly with vaned divider |
| CN209724495U (en) * | 2019-03-22 | 2019-12-03 | 北京航空航天大学 | A kind of supporting structure of micro-gas-turbine machine rotor |
| CN211370810U (en) * | 2020-01-09 | 2020-08-28 | 珠海格力电器股份有限公司 | Radial dynamic pressure gas bearing, compressor and air conditioning unit |
| CN111525153A (en) * | 2020-05-07 | 2020-08-11 | 杭州祥博传热科技股份有限公司 | Pile heat dissipation system and method for hydrogen energy automobile |
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