CN209990636U - Gear-free screw oil-free air compressor for fuel cell - Google Patents
Gear-free screw oil-free air compressor for fuel cell Download PDFInfo
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- CN209990636U CN209990636U CN201920536969.9U CN201920536969U CN209990636U CN 209990636 U CN209990636 U CN 209990636U CN 201920536969 U CN201920536969 U CN 201920536969U CN 209990636 U CN209990636 U CN 209990636U
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Abstract
The utility model relates to a fuel cell does not have gear screw rod oil-free air compressor, include: the air chamber is arranged in the shell, and a male rotor and a female rotor which are matched with each other are arranged in the air chamber; the rotor fixing unit comprises a first end cover, the first end cover is detachably connected with the machine shell, the first end cover is provided with two first bearings for supporting and connecting the male rotor and the female rotor, and the other end of the female rotor is connected with a second bearing arranged on the inner wall of the machine shell; the casing is equipped with the detachable second end cover, and casing and motor are connected respectively to second end cover both sides, male rotor and motor are equipped with the pivot of coaxial setting, the third bearing of pivot and motor rear end links to each other. The male and female rotors of the utility model are made of different materials, the motor directly drives the rotating shaft of the male rotor to rotate, and the male rotor drives the female rotor to realize transmission, thereby canceling gear transmission, further not needing an oil circuit structure, achieving an oil-free design and eliminating the potential safety hazard of lubricating oil leakage; and the machining and assembling procedures are saved.
Description
Technical Field
The utility model relates to a fuel cell does not have gear screw rod oil-free air compressor.
Background
Along with the rapid development in the new energy field, fuel cell needs to adopt air compressor to supply air at the during operation, but because lubricating oil can make fuel cell's pile take place the poisoning, so air compressor exhaust air is not allowed to contain oil, current air compressor adopts motor drive gear structure to drive the rotor rotation basically, the gear that links to each other with the rotor needs to set up in the oil chamber, set up seal structure between oil pocket and the air compressor air chamber, seal up lubricating oil, but this has proposed very high requirement to sealing mechanism, because air compressor is full of compressed air in the working process air chamber, air in the air chamber can break through seal assembly's connection gap entering oil pocket after long-time the use, cause lubricating oil in the oil pocket to reveal, there is very big potential safety hazard to fuel cell.
SUMMERY OF THE UTILITY MODEL
The utility model provides a gearless screw rod oilless air compressor for fuel cell, its structural design is reasonable, and the negative and positive rotor adopts different materials, and the motor directly drives the pivot rotation of positive rotor, and positive rotor drives the negative rotor and realizes the transmission, thereby has cancelled gear drive, and then does not need the oil circuit structure, has reached the oilless design, has eliminated the potential safety hazard that lubricating oil revealed; the processing and assembling procedures are saved, the production cost is saved, the quality of the whole equipment is reduced, the transmission efficiency is improved, the processing and assembling procedures are saved, the production cost is saved, and the problems in the prior art are solved.
The utility model discloses a solve the technical scheme that above-mentioned technical problem adopted and be: a gearless screw oil-free air compressor for a fuel cell, comprising:
the air chamber is arranged in the machine shell, and a male rotor and a female rotor which are matched with each other are arranged in the air chamber;
the rotor fixing unit comprises a first end cover, the first end cover is detachably connected with the machine shell, the first end cover is provided with two first bearings for supporting and connecting the male rotor and the female rotor, and the other end of the female rotor is connected with a second bearing arranged on the inner wall of the machine shell; the shell is provided with a detachable second end cover, two sides of the second end cover are respectively connected with the shell and the motor, the male rotor and the motor are provided with coaxially arranged rotating shafts, and the rotating shafts are connected with a third bearing at the rear end of the motor;
and the sealing element is arranged outside the rotating shaft and is positioned on one side of the second end cover close to the male rotor so as to limit air in the machine shell from entering the motor.
Furthermore, a counter sink hole is formed in the position, through which the rotating shaft penetrates, of the side wall of the machine shell, the sealing element is arranged in the counter sink hole, and the position of the sealing element in the counter sink hole is fixed after the second end cover is connected with the machine shell.
Furthermore, the surface of the rotating shaft of the male rotor is provided with metal blades, and the surface of the rotating shaft of the female rotor is provided with non-metal blades.
Further, the surface of the metal blade of the male rotor is provided with a wear-resistant layer.
Furthermore, the rotating shaft and the non-metal blades of the female rotor are of an integrally formed structure.
Furthermore, the rotating shaft and the metal blades of the male rotor are of an integrally formed structure.
Furthermore, the first bearing, the second bearing and the third bearing all adopt a double-face sealing self-lubricating bearing structure.
Furthermore, the female rotor is made of self-lubricating engineering plastics.
Furthermore, the female rotor is made of ceramic materials.
The utility model adopting the above structure has the advantages that the structure design is reasonable, the male and female rotors are made of different materials, the motor directly drives the rotating shaft of the male rotor to rotate, and the male rotor drives the female rotor to realize transmission, thereby canceling gear transmission, further avoiding the need of an oil circuit structure, achieving an oil-free design and eliminating the potential safety hazard of lubricating oil leakage; the processing and assembling procedures are saved, the production cost is saved, the quality of the whole equipment is reduced, the transmission efficiency is improved, the processing and assembling procedures are saved, and the production cost is saved.
Drawings
Fig. 1 is a schematic structural view of the present invention;
in the figure, 1, a housing; 2. an air chamber; 3. a male rotor; 4. a female rotor; 5. a first end cap; 6. a first bearing; 7. a second bearing; 8. a second end cap; 9. a motor; 10. a third bearing; 11. a seal member; 12. sinking a platform hole; 13. a rotating shaft.
Detailed Description
In order to clearly illustrate the technical features of the present invention, the present invention is explained in detail by the following embodiments in combination with the accompanying drawings.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application, however, the present application may be practiced in other ways than those described herein, and therefore the scope of the present application is not limited by the specific embodiments disclosed below.
In addition, in the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like, indicate orientations and positional relationships based on those shown in the drawings, are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present application. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means 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 application. In this specification, the schematic representations of the terms used above are not necessarily intended to 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.
As shown in fig. 1, a gearless screw oil-free air compressor for a fuel cell comprises a casing 1, a rotor fixing unit and a sealing member 11, wherein a gas chamber 2 is arranged in the casing 1, and a male rotor 3 and a female rotor 4 which are matched with each other are arranged in the gas chamber 2; the rotor fixing unit comprises a first end cover 5, the first end cover 5 is detachably connected with the machine shell 1, the first end cover 5 is provided with two first bearings 6 for supporting and connecting the male rotor 3 and the female rotor 4, and the other end of the female rotor 4 is connected with a second bearing 7 arranged on the inner wall of the machine shell 1; the shell 1 is provided with a detachable second end cover 8, two sides of the second end cover 8 are respectively connected with the shell 1 and the motor 9, the second end cover 8 is provided with a third bearing 10 for supporting and connecting a rotating shaft of the male rotor 3, the male rotor 3 and the motor 9 are provided with rotating shafts 13 which are coaxially arranged, and the rotating shafts 13 are connected with the third bearing 10 at the rear end of the motor 9; the sealing member 11 is disposed outside the rotating shaft 13 and on the side of the second end cap 8 close to the male rotor 3 to limit the air in the casing 1 from entering the inside of the motor 9. The motor 9 and the male rotor 3 are coaxially arranged, a gear transmission structure is not needed, an oil cavity structure is further omitted, and potential safety hazards of lubricating oil leakage are eliminated; the processing and assembling procedures are saved, and the production cost is saved; the reduced gear structure and the related structure of the coupler reduce the quality of the whole equipment, improve the transmission efficiency, and improve the efficiency of compressing air when the motor has the same output power.
In order to facilitate the installation and fixation of the sealing element 13, a counter sink hole 12 is formed in the side wall of the machine shell 1 through which the rotating shaft 13 passes, the sealing element 11 is arranged in the counter sink hole 12, and the position of the sealing element 11 in the counter sink hole 12 is fixed after the second end cover 8 is connected with the machine shell 1.
Specifically, the surface of the rotating shaft of the male rotor 3 is provided with metal blades, and the surface of the rotating shaft of the female rotor 4 is provided with non-metal blades. The form of driving the non-metal blades to rotate through the metal blades is more favorable for the engagement of the blades of the male rotor 3 and the female rotor 4, and the non-metal blades also greatly reduce the mass of the female rotor 4 and are more easily driven to rotate.
It is worth mentioning that the male rotor 3 can be made of an alloy material or an aluminum material, the mass of the male rotor is lighter than that of other metals, the friction coefficient between the male rotor and the female rotor 4 blades in the rotating process is smaller, and the transmission efficiency between the male rotor 3 and the female rotor 4 can be improved.
In order to further reduce the mutual friction and abrasion between the blades of the male rotor 3 and the female rotor 4, the surface of the metal blade of the male rotor 3 is provided with a wear-resistant layer. The wear-resistant layer and the non-metallic material of the female rotor 4 are contacted with each other, so that the friction coefficient between the wear-resistant layer and the female rotor can be reduced, and the wear between the wear-resistant layer and the female rotor can be effectively controlled. In particular, the wear-resistant layer can be a DLC coating.
In order to facilitate the processing and assembly, the rotating shaft and the non-metal blades of the female rotor 4 are of an integrally formed structure. In the actual processing process, the rotating shaft of the female rotor 4 can be made of metal, and the non-metal blade and the metal rotating shaft are integrally formed in a die-casting mode.
Similarly, the shaft and the metal blades of the male rotor 3 are integrally formed. In the actual processing process, the rotating shaft of the male rotor 3 can be made of metal, and the metal blades and the metal rotating shaft made of different materials are integrally formed in a die-casting mode.
The first bearing 6, the second bearing 7 and the third bearing 10 all adopt a double-sided sealing bearing structure. The first bearing 6, the second bearing 7 and the third bearing 10 are free of maintenance and convenient to use.
The female rotor 4 is made of self-lubricating engineering plastic. The PEEK material can be selected specifically, so that the female rotor 4 has excellent performances of high temperature resistance, self-lubrication, easy processing and high mechanical strength, the reliability of the female rotor 4 is ensured, and the using effect is good.
In addition, the female rotor 4 is made of ceramic. The female rotor 4 has the characteristics of high melting point, high hardness, high wear resistance and oxidation resistance, and can also be matched with the male rotor 3 for rotation.
The above-mentioned specific embodiments can not be regarded as the restriction to the scope of protection of the utility model, to technical personnel in this technical field, it is right the utility model discloses any replacement improvement or transform that embodiment made all fall within the scope of protection of the utility model.
The parts of the present invention not described in detail are the known techniques of those skilled in the art.
Claims (9)
1. A gearless screw oil-free air compressor for a fuel cell, comprising:
the air chamber is arranged in the machine shell, and a male rotor and a female rotor which are matched with each other are arranged in the air chamber;
the rotor fixing unit comprises a first end cover, the first end cover is detachably connected with the machine shell, the first end cover is provided with two first bearings for supporting and connecting the male rotor and the female rotor, and the other end of the female rotor is connected with a second bearing arranged on the inner wall of the machine shell; the shell is provided with a detachable second end cover, two sides of the second end cover are respectively connected with the shell and the motor, the male rotor and the motor are provided with coaxially arranged rotating shafts, and the rotating shafts are connected with a third bearing at the rear end of the motor;
and the sealing element is arranged outside the rotating shaft and is positioned on one side of the second end cover close to the male rotor so as to limit air in the machine shell from entering the motor.
2. The gearless screw oil-free air compressor for the fuel cell according to claim 1, wherein a counter sink hole is formed in a position where the side wall of the casing is penetrated by the rotating shaft, the sealing member is disposed in the counter sink hole, and the second end cover is connected to the casing to fix the position of the sealing member in the counter sink hole.
3. A gearless screw oil-free air compressor for a fuel cell according to claim 1 or 2, wherein the surface of the rotating shaft of the male rotor is provided with metal blades, and the surface of the rotating shaft of the female rotor is provided with non-metal blades.
4. An oil-free air compressor with gearless screw for fuel cell as claimed in claim 3, wherein the surface of the metal blade of the male rotor is provided with a wear resistant layer.
5. The gearless screw oil-free air compressor for the fuel cell according to claim 4, wherein the rotating shaft and the non-metallic blades of the female rotor are of an integrally formed structure.
6. The gearless screw oil-free air compressor for the fuel cell according to claim 4 or 5, wherein the rotating shaft and the metal blade of the male rotor are of an integrally formed structure.
7. The gearless screw oil-free air compressor for the fuel cell according to claim 6, wherein the first bearing, the second bearing and the third bearing are all of a double-face sealing self-lubricating bearing structure.
8. The gearless screw oil-free air compressor for the fuel cell according to claim 7, wherein the female rotor is made of a self-lubricating engineering plastic material.
9. The gearless screw oil-free air compressor for the fuel cell according to claim 7, wherein the female rotor is made of ceramic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920536969.9U CN209990636U (en) | 2019-04-19 | 2019-04-19 | Gear-free screw oil-free air compressor for fuel cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920536969.9U CN209990636U (en) | 2019-04-19 | 2019-04-19 | Gear-free screw oil-free air compressor for fuel cell |
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| Publication Number | Publication Date |
|---|---|
| CN209990636U true CN209990636U (en) | 2020-01-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920536969.9U Active CN209990636U (en) | 2019-04-19 | 2019-04-19 | Gear-free screw oil-free air compressor for fuel cell |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109915368A (en) * | 2019-04-19 | 2019-06-21 | 烟台菱辰能源有限公司 | A kind of fuel cell gearless screw rod oil-free air compressor |
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2019
- 2019-04-19 CN CN201920536969.9U patent/CN209990636U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109915368A (en) * | 2019-04-19 | 2019-06-21 | 烟台菱辰能源有限公司 | A kind of fuel cell gearless screw rod oil-free air compressor |
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Address after: 264000 south of xingjiazhuang village, Tingkou Town, Qixia City, Yantai City, Shandong Province Patentee after: Yantai Dongde Hydrogen Energy Technology Co., Ltd Address before: Room 1201, 12th floor, Building C, Yida Zhihui Valley, 300 Changjiang Road, Yantai Economic and Technological Development Zone, Shandong Province, 264000 Patentee before: YANTAI LINGCHEN ENERGY Co.,Ltd. |