CN214660934U - High-speed centrifugal air compressor - Google Patents
High-speed centrifugal air compressor Download PDFInfo
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- CN214660934U CN214660934U CN202023031105.3U CN202023031105U CN214660934U CN 214660934 U CN214660934 U CN 214660934U CN 202023031105 U CN202023031105 U CN 202023031105U CN 214660934 U CN214660934 U CN 214660934U
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Abstract
The utility model particularly discloses a provide a high-speed centrifugal air compressor, include: the motor comprises a motor support frame, a motor main body and a diffuser; the motor main body is fixed in the motor support frame; the diffuser is arranged on the outer side of the motor support frame, is connected with the motor main body and comprises a volute and an impeller positioned in the volute; the motor main body comprises a motor rotor and a permanent magnet, the motor rotor comprises a first rotor shaft and a second rotor shaft, cavities are formed in the first rotor shaft and the second rotor shaft, and the other end of the first rotor shaft is rotatably connected to one end in the motor support frame; the other end of the second rotor shaft is rotatably connected to the other end in the motor support frame and extends out of the motor support frame to be fixedly connected with the impeller of the diffuser. The embodiment of the utility model provides a high-speed centrifugal air compressor machine can accomplish that system's noise is little, transmission efficiency is high and the complete machine is small. The utility model discloses set motor rotor's of motor main part inside to hollow structure to satisfy motor rotor and carry out the performance demand that hypervelocity state moved.
Description
Technical Field
The utility model relates to an air compressor machine technical field especially involves a high-speed centrifugal air compressor machine.
Background
The air compressor is responsible for delivering clean air with specific pressure and flow for the electric pile in the fuel cell system, provides necessary oxygen for the electric pile reaction, and is one of the most central key parts of the fuel cell system except the electric pile. However, the air compressor currently applied to the fuel cell system has the defects of high noise, low transmission efficiency, large overall volume and the like, and in order to meet the output requirement of the fuel cell system on the large flow rate and high pressure ratio of gas, the rotor speed of the air compressor generally needs to be operated in an ultra-high speed state of more than 100000rpm, but the rotating speed of the conventional shaft is difficult to meet the performance requirement of the operation in the ultra-high speed state of more than 100000 rpm.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a high-speed centrifugal air compressor machine for solve the air compressor machine noise great, transmission efficiency is low, the complete machine volume is great, and the rotational speed of current traditional axle hardly satisfies the performance requirement's that reaches the hypervelocity state operation more than 100000rpm problem.
According to the utility model discloses an aspect provides a high-speed centrifugal air compressor machine, include:
the motor comprises a motor support frame, a motor main body and a diffuser; the motor main body is fixed in the motor support frame; the diffuser is arranged on the outer side of the motor support frame, is connected with the motor main body and comprises a volute and an impeller positioned in the volute; the motor main body comprises a motor rotor and a permanent magnet, the motor rotor comprises a first rotor shaft and a second rotor shaft, cavities are formed in the first rotor shaft and the second rotor shaft, one end of the first rotor shaft is fixedly connected with one end of the second rotor shaft, and the first cavity of the first rotor shaft is communicated with the second cavity of the second rotor shaft; the other end of the first rotor shaft is rotatably connected to one end in the motor supporting frame; the other end of the second rotor shaft is rotatably connected to the other end in the motor support frame and extends out of the motor support frame to be fixedly connected with the impeller of the diffuser.
The utility model discloses beneficial effect does: the embodiment of the utility model provides a high-speed centrifugal air compressor machine passes through high-speed electric motor rotor direct drive impeller, does not have mechanical transmission, can accomplish that the system noise is little, transmission efficiency is high and the complete machine is small. In order to satisfy the output requirement of large-traffic high pressure ratio, ensure that electric motor rotor's rotational speed can reach the hypervelocity state operation more than 100000rpm, the utility model discloses set hollow structure to electric motor rotor's of motor main part inside, electric motor rotor constitutes hollow structure through inside first rotor shaft and the second rotor shaft fixed connection that all is provided with the cavity promptly, first rotor shaft and second rotor shaft can also be unpack apart at any time and change the maintenance according to the demand, carry out the performance demand that the hypervelocity state moved with satisfying electric motor rotor, when electric motor rotor is high-speed rotatory, it is rotatory at a high speed to drive the impeller of fixing on the second rotor shaft, the impeller is constantly rotatory, gas is constantly inhaled and is thrown away the diffuser, thereby the continuous flow of gas has been kept.
On the basis of the technical scheme, the utility model discloses can also do as follows the improvement:
optionally, the motor support frame includes: the motor comprises a motor shell, a first motor end cover and a second motor end cover; the first motor end cover and the second motor end cover are respectively fixed at two ends of the motor shell, the other end of the first rotor shaft of the motor rotor is rotatably connected with the first motor end cover, the other end of the second rotor shaft is rotatably connected with the second motor end cover and extends out of the second motor end cover to be fixedly connected with the impeller of the diffuser; the permanent magnet is arranged outside the second rotor shaft, and magnetic isolation copper rings are arranged between the two ends of the permanent magnet and the first rotor shaft and between the two ends of the permanent magnet and the second rotor shaft.
The utility model adopts the beneficial effect of above-mentioned alternative be, motor body passes through electric motor rotor's first rotor shaft and second rotor shaft to be fixed in motor support frame, and the magnetism copper ring that separates at permanent magnet both ends not only can prevent the permanent magnet magnetic leakage, ensures electric motor rotor's work efficiency, can also fix the permanent magnet.
Optionally, a first fixed bearing is arranged at a first shoulder arranged at the other end of the first rotor shaft, and the other end of the first rotor shaft is rotatably connected with the first motor end cover of the motor support frame through the first fixed bearing;
and a second shaft shoulder arranged at the other end of the second rotor shaft is provided with a second fixed bearing, and the other end of the second rotor shaft is rotatably connected with the second motor end cover of the motor support frame through the second fixed bearing.
Optionally, the first fixed bearing and the second fixed bearing adopt high-speed ball bearings or air bearings.
The utility model adopts the beneficial effect of above-mentioned alternative be, first rotor shaft and second rotor shaft rotate electric motor rotor through two high-speed ball bearing or air bearing and connect at the air compressor machine originally internally, and the rotational speed that has realized electric motor rotor can reach the performance requirement of the hypervelocity state operation more than 100000 rpm.
Optionally, a first gland is arranged on the outer side of the first motor end cover of the motor support frame; the part of the first motor end cover close to the first fixed bearing is provided with a first cooling groove along the outside of the first fixed bearing, and a closed space between the first cooling groove and the first gland forms a first cooling cavity.
The utility model adopts the beneficial effects of above-mentioned alternative do, in high-speed centrifugal air compressor machine working process, because high-speed motor lasts the electromagnetism during operation, the first fixing bearing who rotates the first rotor shaft of connecting electric motor rotor is under high-speed rotatory operating condition, must produce a large amount of heats, needs in time to dispel the heat, so, first fixing bearing outside is provided with first cooling cavity to first cooling cavity through pouring into the coolant liquid cools down the heat dissipation for first fixing bearing.
Optionally, a second gland is arranged between the outer side of the second motor end cover of the motor support frame and the volute, a second cooling groove is arranged on the portion, close to the second fixed bearing, of the second motor end cover along the outside of the second fixed bearing, and a second cooling cavity is formed by a closed space between the second cooling groove and the second gland.
The utility model adopts the beneficial effects of above-mentioned alternative do, second fixing bearing is under high-speed rotatory operating condition, must also produce a large amount of heats, and second cooling cavity is used for cooling down the heat dissipation for second fixing bearing when pouring into the coolant liquid into.
Optionally, a liquid inlet channel is arranged on the first motor end cover, and the liquid inlet channel is communicated with the first cooling cavity.
The utility model adopts the beneficial effect of above-mentioned alternative be, the coolant liquid gets into first cooling cavity through feed liquor hole of inlet channel to carry out the heat exchange cooling to first fixing bearing.
Optionally, the motor casing of the motor support frame is further sleeved with a casing sleeve, a part of the motor casing located in the casing sleeve is provided with a groove structure in a spiral shape, and a closed space between the groove structure and the casing sleeve forms a third cooling cavity.
The utility model adopts the beneficial effect of above-mentioned alternative be, the groove structure that is the heliciform setting through the part that is located the shell cover at motor housing constitutes the third cooling cavity with the shell cover, that is to say, the third cooling cavity is that the heliciform distributes on motor housing, thereby cool down the heat dissipation for motor stator in the motor main part promptly permanent magnet through getting into the cooling liquid in the third cooling cavity, it has increased the heat radiating area to the permanent magnet to be the third cooling cavity of heliciform distribution on motor housing, be favorable to carrying out the rapid cooling heat dissipation to the permanent magnet.
Optionally, a first cooling flow channel for communicating the first cooling cavity with the third cooling cavity is arranged in the first motor end cover and the motor housing; a second cooling flow channel for communicating the third cooling cavity with the second cooling cavity is arranged in the motor shell and the second motor end cover; and a liquid outlet channel is arranged on the second motor end cover and is communicated with the second cooling cavity.
The utility model adopts the beneficial effect of above-mentioned alternative be, the coolant liquid gets into first cooling cavity through inlet passage's feed liquor hole and carries out the heat exchange cooling to first fixing bearing, in the first cooling channel of rethread gets into motor housing's third cooling cavity, for motor stator permanent magnet cooling heat dissipation promptly, rethread second cooling channel gets into second cooling cavity, cool down the heat dissipation to second fixing bearing, will have thermal coolant liquid discharge air compressor machine system through liquid outlet passage at last, thereby replace the heat that the working process produced.
Optionally, an air inlet cavity is reserved between the volute and the second gland, and the air inlet cavity is communicated with the diffusion channel of the volute.
The utility model adopts the beneficial effect of above-mentioned alternative be, when the impeller is high-speed rotatory under electric motor rotor's direct drive, under the centrifugal force effect, gaseous after getting into the diffuser from the inlet port of spiral case, get rid of in the diffusion passageway on every side through the chamber that admits air.
The above description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented according to the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more obvious and understandable, the following detailed description of the present invention is given.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
fig. 1 is a schematic sectional view of a high-speed centrifugal air compressor according to an embodiment of the present invention;
fig. 2 is a front view of a high-speed centrifugal air compressor according to an embodiment of the present invention;
FIG. 3 is a bottom view of FIG. 2;
fig. 4 is a schematic perspective view of a high-speed centrifugal air compressor according to an embodiment of the present invention;
fig. 5 is a schematic view of a cross-sectional structure of a rotor of a high-speed centrifugal air compressor according to an embodiment of the present invention.
In the figure: 01-a first gland, 02-a second gland, 11-a first motor end cover, 12-a second motor end cover, 2-a motor shell, 20-a motor body, 21-a third cooling cavity, 22-a liquid inlet channel, 23-a motor three-phase binding post, 24-a liquid outlet channel, 3-a shell sleeve, 4-a diffuser, 41-an impeller, 42-a volute, 421-an impeller air inlet hole, 422-an air inlet port, 43-a diffuser channel, 44-an air outlet, 5-an air inlet cavity, 6-a motor rotor, 60-a bolt, 61-a first rotor shaft, 611-a first cavity, 62-a second rotor shaft, 621-a second cavity, 63-a permanent magnet, 64-a first shaft shoulder, 65-a magnetism isolating copper ring and 66-a thread, 67-second shoulder, 71-first cooling cavity, 72-second cooling cavity, 81-first cooling flow channel, 82-second cooling flow channel, 91-first stationary bearing, 92-second stationary bearing.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
The first embodiment of the present invention provides a high-speed centrifugal air compressor, please refer to fig. 1-5, including: motor support frame, motor main part 20 and diffuser 4, motor main part 20 is fixed in the motor support frame, diffuser 4 sets up in the motor support frame outside and is connected with motor main part 20, diffuser 4 includes spiral case 42 and is located impeller 41 in the spiral case 42, motor main part 20 includes motor rotor 6 and permanent magnet 63, motor main part 20 still includes the motor casing, the stator wire winding, motor rotor 6 and permanent magnet 63 all set up in the motor casing, motor rotor 6 includes inside first rotor shaft 61 and the second rotor shaft 62 that all is provided with the cavity, permanent magnet 63 sets up the outside at second rotor shaft 62, first rotor shaft 61 one end and second rotor shaft 62 one end fixed connection, and the first cavity 611 of first rotor shaft 61 and the second cavity 621 of second rotor shaft 62 communicate each other. The other end of the first rotor shaft 61 is rotatably connected to one end in the motor support frame, the other end of the second rotor shaft 62 is rotatably connected to the other end in the motor support frame, the other end of the second rotor shaft 62 extends out of the motor support frame and is fixedly connected with the impeller 41 of the diffuser 4, and specifically, the end of the shaft lever at the other end of the second rotor shaft 62 is fixedly connected with the impeller 41 through a bolt 60. The embodiment of the utility model provides a high-speed centrifugal air compressor passes through 6 direct drive impellers 41 of high-speed electric motor rotor, does not have mechanical transmission, can accomplish that the system noise is little, transmission efficiency is high and the complete machine is small. In order to satisfy the output requirement of large-traffic high pressure ratio, ensure that electric motor rotor 6's rotational speed can reach the hypervelocity state operation more than 100000rpm, the utility model discloses set hollow structure to electric motor rotor 6's inside in the motor main part 20, electric motor rotor 6 constitutes hollow structure through inside first rotor shaft 61 and the second rotor shaft 62 fixed connection that all is provided with the cavity promptly, first rotor shaft 61 and second rotor shaft 62 can also be unpacked apart at any time according to the demand and change the maintenance, in order to satisfy electric motor rotor 6 and carry out the performance demand of hypervelocity state operation, when electric motor rotor 6 is high-speed rotatory, drive the impeller 41 high-speed rotation of fixing on second rotor shaft 62, impeller 41 constantly rotates, and diffuser 4 is thrown out in gas constantly inhales, thereby has kept the continuous flow of gas.
The motor support frame includes: motor housing 2, first motor end cover 11 and second motor end cover 12. The first motor end cover 11 and the second motor end cover 12 are respectively fixed at two ends of the motor housing 2, the other end of the first rotor shaft 61 of the motor rotor 6 is rotatably connected with the first motor end cover 11, and the other end of the second rotor shaft 62 is rotatably connected with the second motor end cover 12 and extends out of the second motor end cover 12 to be fixedly connected with the impeller 41 of the diffuser 4. And a magnetism isolating copper ring 65 is arranged between the two ends of the permanent magnet 63 and the first rotor shaft 61 and the second rotor shaft 62. The motor main body 20 is fixed in the motor support frame through the first rotor shaft 61 and the second rotor shaft 62 of the motor rotor 6, and the magnetism isolating copper rings 65 at the two ends of the permanent magnet 63 can prevent the magnetic leakage of the permanent magnet 63, ensure the working efficiency of the motor rotor 6 and fix the permanent magnet 63.
Optionally, in the embodiment of the present invention, the first shoulder 64 of the other end of the first rotor shaft 61 (or the end of the first rotor shaft 61 connected to the motor support frame in a rotating manner) is provided with a first fixing bearing 91, and the other end of the first rotor shaft 61 is connected to the first motor end cover 11 in a rotating manner through the first fixing bearing 91. A second fixed bearing 92 is arranged at a second shoulder 67 arranged at the other end of the second rotor shaft 62 (or the end of the second rotor shaft 62 rotatably connected with the motor support bracket), and the other end of the second rotor shaft 62 is rotatably connected with the second motor end cover 12 through the second fixed bearing 92. Alternatively, the first fixed bearing 91 and the second fixed bearing 92 may be high-speed ball bearings or air bearings. The first rotor shaft 61 and the second rotor shaft 62 rotatably connect the motor rotor 6 in the air compressor body through a high-speed ball bearing or an air bearing, so that the performance requirement that the rotating speed of the motor rotor 6 can reach the ultra-high speed state operation of more than 100000rpm is met.
The embodiment of the utility model provides an in, the first motor end cover 11 outside of motor support frame is provided with first gland 01, and the part that first motor end cover 11 is close to first fixing bearing 91 is provided with first cooling recess along first fixing bearing 91 outside, and the airtight space between first cooling recess and the first gland 01 constitutes first cooling cavity 71. The embodiment of the utility model provides an in high-speed centrifugal air compressor machine working process, because high-speed motor lasts the electromagnetism during operation, the first fixing bearing 91 of rotating the first rotor axle 61 of connecting electric motor rotor 6 is under high-speed rotatory operating condition, must produce a large amount of heats, needs in time to dispel the heat, so, first fixing bearing 91 outside is provided with first cooling cavity 71 to first cooling cavity 71 through pouring into the coolant liquid cools down the heat dissipation for first fixing bearing 91.
Optionally, a second gland 02 is disposed between the outer side of the second motor end cover 12 of the motor support frame and the volute 42, a second cooling groove is disposed along the outside of the second fixed bearing 92 at a portion of the second motor end cover 12 close to the second fixed bearing 92, and a closed space between the second cooling groove and the second gland 02 forms a second cooling cavity 72. The second stationary bearing 92 is also liable to generate a large amount of heat in a high-speed rotation operating state, and the second cooling cavity 72 is used for cooling and dissipating heat for the second stationary bearing 92 when the cooling liquid is injected.
The embodiment of the utility model provides an in, be provided with inlet channel 22 on the first motor end cover 11 of motor support frame, inlet channel 22 communicates with first cooling cavity 71. The cooling liquid enters the first cooling cavity 71 through the liquid inlet hole of the liquid inlet channel 22, so that the first fixed bearing 91 is cooled by heat exchange.
Still cup jointed outer shell 3 on motor support frame's the motor casing 2, the part that motor casing 2 is located outer shell 3 is the heliciform and is provided with groove structure, and the airtight space between groove structure and the outer shell 3 constitutes third cooling chamber 21. Therefore, the utility model discloses a part that is located outer cover 3 at motor housing 2 is the groove structure that the heliciform set up and constitutes third cooling cavity 21 with outer cover 3, that is to say, third cooling cavity 21 is the heliciform and distributes on motor housing 2, thereby through getting into the interior motor stator of cooling liquid for the high-speed motor main part of third cooling cavity 21 permanent magnet 63 cools down the heat dissipation promptly, it has increased the heat radiating area to motor stator to be the third cooling cavity 21 of heliciform distribution on motor housing 2, be favorable to carrying out the rapid cooling heat dissipation to motor stator.
Optionally, a first cooling flow channel 81 for communicating the first cooling cavity 71 with the third cooling cavity 21 is provided along the first motor end cover 11 and the motor housing 2, and a second cooling flow channel 82 for communicating the third cooling cavity 21 with the second cooling cavity 72 is provided along the motor housing 2 and the second motor end cover 12. The second motor end cover 12 is provided with a liquid outlet channel 24, and the liquid outlet channel 24 is communicated with the second cooling cavity 72. From this, the coolant liquid gets into first cooling cavity 71 through the feed liquor hole of inlet channel 22 and carries out the heat exchange cooling to first fixing bearing 91, rethread first cooling runner 81 gets into in motor housing 2's third cooling cavity 21, for high-speed moving motor rotor 6 cooling heat dissipation, rethread second cooling runner 82 gets into second cooling cavity 72, cool down the heat dissipation to second fixing bearing 92, the coolant liquid discharge air compressor machine system that will have the heat through liquid outlet channel 24 at last, thereby replace the heat that the working process produced.
Furthermore, in the embodiment of the present invention, an air inlet cavity 5 is reserved between the volute 42 and the second gland 02, and the air inlet cavity 5 is communicated with the diffusion passage 43 of the volute 42. When the impeller 41 is rotated at a high speed by the direct drive of the motor rotor 6, the gas enters the diffuser 4 from the inlet port 422 of the volute 42 under the action of centrifugal force, and is thrown into the peripheral diffusion passage 43 through the inlet cavity 5.
The second embodiment of the present invention is an application example of the present invention, which is introduced with reference to fig. 1 to 5, on the basis of the above embodiments.
The working principle of the high-speed centrifugal air compressor in the application example is that the high-speed centrifugal air compressor directly drives the impeller 41 by the high-speed motor rotor 6 and has no mechanical transmission device. When the high-speed motor rotor 6 rotates, the impeller 41 fixed on the second rotor shaft 62 of the motor rotor 6 through the bolt 60 is driven, when the impeller 41 rotates at a high speed, under the action of centrifugal force, gas is thrown into the diffusion channel 43 of the surrounding diffuser 4 through the air inlet cavity 5 in the volute 42, a vacuum zone is formed at the impeller air inlet hole 421 of the impeller 41 by communicating the opening of the diffusion channel 43 to the air outlet 44, and at this time, external fresh gas enters the range of the impeller 41 through the air inlet hole 422 and the impeller air inlet hole 421. The impeller 41 is continuously rotated and gas is continuously sucked and thrown out, thereby maintaining a continuous flow of gas.
In the working process of the high-speed centrifugal air compressor, because the high-speed motor continuously and electromagnetically works and the first fixed bearing 91 and the second fixed bearing 92 of the motor rotor 6 rotate at high speed, a large amount of heat is inevitably generated and heat dissipation needs to be carried out in time, a first cooling cavity 71 is arranged at the position of the first fixed bearing 91, a second cooling cavity 72 is arranged at the position of the second fixed bearing 92, a third cooling cavity 21 is arranged between the motor shell 2 and the shell sleeve 3, cooling liquid enters the first cooling cavity 71 through a liquid inlet hole of the liquid inlet channel 22, heat exchange and temperature reduction are carried out on the first fixed bearing 91, then the cooling liquid enters the third cooling cavity 21 through the first cooling flow channel 81, temperature reduction and heat dissipation are carried out on the motor stator, namely the permanent magnet 63, in the motor main body 2, and then the cooling liquid enters the second cooling cavity 72 through the second cooling flow channel 82, and temperature reduction and heat dissipation are carried out on the second fixed bearing 92, finally, the cooling liquid with heat is discharged out of the air compressor system through the liquid outlet holes of the liquid outlet channel 24, and the heat generated in the working process is replaced.
In order to meet the output requirement of high flow rate and high pressure ratio, the rotating speed of a rotor generally needs to be operated in an ultra-high speed state of more than 100000rpm, the requirement is difficult to meet by the conventional shaft, and the dynamic stability needs to be considered. The embodiment provides a high-speed motor rotor 6 hollow shaft, connect fixedly through the screw thread 66 who sets up at first rotor shaft 61 tip by the shaft part (being first rotor shaft 61) of left end and right-hand member shaft part (second rotor shaft 62) and constitute, first cavity 611 is processed out to first rotor shaft 61 inside, second cavity 621 is processed out to second rotor shaft 62 inside, first cavity 611 and second cavity 621 communicate each other, make motor rotor 6's the inside cavity structure that is of axle, the outer winding of permanent magnet 63 has the carbon fiber protective sheath, permanent magnet 63 both ends are furnished with magnetism isolating copper ring 65 respectively. The first shaft shoulder 64 and the second shaft shoulder 67 are provided with a first fixed bearing 91 and a second fixed bearing 92, and the first fixed bearing 91 and the second fixed bearing 92 adopt high-speed ball bearings or air bearings to meet performance requirements. The motor stator of the motor main body 20, i.e., the stator winding of the permanent magnet 63, is led out of the motor casing 2 and is provided with a motor three-phase terminal 23.
The high-speed centrifugal air compressor's among this application example product key feature has: 1. the impeller 41 rotates at a high speed in the volute 42, the pressure of the gas is increased through the diffuser 4 and then the gas is output, 2, the high-speed motor rotor 6 directly drives the impeller 41 to rotate to compress the gas, 3, the high-speed motor rotor 6 is supported by the high-speed ball bearing, and 4, the cooling liquid flows through the motor stator of the motor main body 20, namely the third cooling cavity 21 on the outer side of the permanent magnet 63, so that the cooling of the body of the air compressor is realized.
The high-speed centrifugal air compressor in this application example uses high-speed electric motor rotor direct drive impeller, does not have mechanical transmission, consequently can accomplish that the system noise is little, transmission efficiency is high and the complete machine is small, and current market air compressor power is great satisfying the shared proportion more than the hydrogen fuel cell engine 30KW, and low-power air compressor market wads and hunts for less, the utility model provides a high-speed centrifugal air compressor product can provide the supply of air for hydrogen fuel cell engine 10KW-20KW scope power.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The above embodiment numbers of the present invention are only for description, and do not represent the advantages and disadvantages of the embodiments.
While the embodiments of the present invention have been described with reference to the accompanying drawings, the present invention is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many modifications may be made by one skilled in the art without departing from the spirit and scope of the present invention as defined in the appended claims.
Claims (10)
1. A high-speed centrifugal air compressor, characterized by that includes:
the motor comprises a motor support frame, a motor main body and a diffuser; the motor main body is fixed in the motor support frame; the diffuser is arranged on the outer side of the motor support frame, is connected with the motor main body and comprises a volute and an impeller positioned in the volute; the motor main body comprises a motor rotor and a permanent magnet, the motor rotor comprises a first rotor shaft and a second rotor shaft, cavities are formed in the first rotor shaft and the second rotor shaft, one end of the first rotor shaft is fixedly connected with one end of the second rotor shaft, and the first cavity of the first rotor shaft is communicated with the second cavity of the second rotor shaft; the other end of the first rotor shaft is rotatably connected to one end in the motor supporting frame; the other end of the second rotor shaft is rotatably connected to the other end in the motor support frame and extends out of the motor support frame to be fixedly connected with the impeller of the diffuser.
2. The high-speed centrifugal air compressor according to claim 1, wherein said motor support bracket comprises: the motor comprises a motor shell, a first motor end cover and a second motor end cover; the first motor end cover and the second motor end cover are respectively fixed at two ends of the motor shell, the other end of the first rotor shaft of the motor rotor is rotatably connected with the first motor end cover, the other end of the second rotor shaft is rotatably connected with the second motor end cover and extends out of the second motor end cover to be fixedly connected with the impeller of the diffuser; the permanent magnet is arranged outside the second rotor shaft, and magnetic isolation copper rings are arranged between the two ends of the permanent magnet and the first rotor shaft and between the two ends of the permanent magnet and the second rotor shaft.
3. The high-speed centrifugal air compressor according to claim 2, wherein a first fixed bearing is disposed at a first shoulder disposed at the other end of said first rotor shaft, and the other end of said first rotor shaft is rotatably connected to said first motor cover of said motor support bracket through said first fixed bearing;
and a second shaft shoulder arranged at the other end of the second rotor shaft is provided with a second fixed bearing, and the other end of the second rotor shaft is rotatably connected with the second motor end cover of the motor support frame through the second fixed bearing.
4. A high-speed centrifugal air compressor as claimed in claim 3 wherein said first and second fixed bearings are high-speed ball bearings or air bearings.
5. The high-speed centrifugal air compressor according to claim 3, wherein a first gland is provided outside said first motor end cover of said motor support bracket; the part of the first motor end cover close to the first fixed bearing is provided with a first cooling groove along the outside of the first fixed bearing, and a closed space between the first cooling groove and the first gland forms a first cooling cavity.
6. The high-speed centrifugal air compressor according to claim 5, wherein a second gland is provided between an outer side of the second motor end cover of the motor support frame and the scroll casing, a portion of the second motor end cover adjacent to the second fixed bearing is provided with a second cooling groove along an outer portion of the second fixed bearing, and a closed space between the second cooling groove and the second gland constitutes a second cooling cavity.
7. A high-speed centrifugal air compressor as claimed in claim 5 wherein said first motor end cap is provided with an inlet passage, said inlet passage communicating with said first cooling chamber.
8. The high-speed centrifugal air compressor according to claim 6, wherein a casing is further sleeved on the motor casing of the motor support frame, a part of the motor casing located in the casing is spirally provided with a groove structure, and a third cooling cavity is formed by a closed space between the groove structure and the casing.
9. The high-speed centrifugal air compressor according to claim 8, wherein a first cooling flow passage for communicating said first cooling cavity with said third cooling cavity is provided along said first motor end cover and said motor housing; a second cooling flow channel for communicating the third cooling cavity with the second cooling cavity is arranged in the motor shell and the second motor end cover; and a liquid outlet channel is arranged on the second motor end cover and is communicated with the second cooling cavity.
10. The high-speed centrifugal air compressor according to claim 6, wherein an air inlet cavity is reserved between said volute and said second gland, and said air inlet cavity is communicated with a diffusion passage of said volute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023031105.3U CN214660934U (en) | 2020-12-16 | 2020-12-16 | High-speed centrifugal air compressor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023031105.3U CN214660934U (en) | 2020-12-16 | 2020-12-16 | High-speed centrifugal air compressor |
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| CN214660934U true CN214660934U (en) | 2021-11-09 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114135498A (en) * | 2021-12-16 | 2022-03-04 | 势加透博洁净动力如皋有限公司 | Centrifugal compressor with axial force balancing and cooling system |
| CN115065196A (en) * | 2022-07-25 | 2022-09-16 | 浙江卓瑞机电有限公司 | Noise control frame and noise control motor in motor |
-
2020
- 2020-12-16 CN CN202023031105.3U patent/CN214660934U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114135498A (en) * | 2021-12-16 | 2022-03-04 | 势加透博洁净动力如皋有限公司 | Centrifugal compressor with axial force balancing and cooling system |
| CN115065196A (en) * | 2022-07-25 | 2022-09-16 | 浙江卓瑞机电有限公司 | Noise control frame and noise control motor in motor |
| CN115065196B (en) * | 2022-07-25 | 2023-06-23 | 浙江卓瑞机电有限公司 | Noise-proof frame and noise-proof motor in motor |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220901 Address after: Room D607, Laiwu Enlightenment Star Technology Incubator Co., Ltd., No. 46, Wenhua North Road, Laiwu District, Jinan City, Shandong Province, 271100 Patentee after: Shandong Jiran hydrogen power Co.,Ltd. Address before: 250022 room 1811, building 1, Ginza City Plaza, No. 8, Wenhua South Road, Laiwu District, Jinan City, Shandong Province Patentee before: Jinan hydrogen fuel energy technology Co.,Ltd. |
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| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211109 |