CN114922864B - Air suspension high-speed centrifugal blower - Google Patents
Air suspension high-speed centrifugal blower Download PDFInfo
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- CN114922864B CN114922864B CN202210626220.XA CN202210626220A CN114922864B CN 114922864 B CN114922864 B CN 114922864B CN 202210626220 A CN202210626220 A CN 202210626220A CN 114922864 B CN114922864 B CN 114922864B
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- air
- cooling channel
- channel
- cooling
- water
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- 239000000725 suspension Substances 0.000 title claims abstract description 20
- 238000001816 cooling Methods 0.000 claims abstract description 279
- 230000035939 shock Effects 0.000 claims abstract description 13
- 239000006096 absorbing agent Substances 0.000 claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 136
- 230000007704 transition Effects 0.000 claims description 37
- 238000005452 bending Methods 0.000 claims description 15
- 230000000903 blocking effect Effects 0.000 claims description 13
- 238000004891 communication Methods 0.000 claims description 12
- 238000009434 installation Methods 0.000 claims description 6
- 238000010521 absorption reaction Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 6
- 238000013016 damping Methods 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 4
- 230000002238 attenuated effect Effects 0.000 abstract description 3
- 239000000498 cooling water Substances 0.000 description 4
- 239000000112 cooling gas Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 239000002826 coolant Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000005339 levitation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/668—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps damping or preventing mechanical vibrations
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
- F04D17/08—Centrifugal pumps
- F04D17/16—Centrifugal pumps for displacing without appreciable compression
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/05—Shafts or bearings, or assemblies thereof, specially adapted for elastic fluid pumps
- F04D29/056—Bearings
- F04D29/0563—Bearings cartridges
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/58—Cooling; Heating; Diminishing heat transfer
- F04D29/582—Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/58—Cooling; Heating; Diminishing heat transfer
- F04D29/582—Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps
- F04D29/584—Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps cooling or heating the machine
Abstract
The invention provides an air suspension high-speed centrifugal blower, which belongs to the technical field of blowers and comprises a base, an elastic seat and an air cooling system of a host structure; a mounting fixing seat is arranged above the base; the elastic seat comprises an elastic rubber shock absorber; the air cooling system comprises an air cooling channel and a buffer cavity; the air cooling channel comprises a first air channel and a second air channel which are communicated with the inner cavity of the volute and the buffer cavity, the first air channel comprises a first through hole, a front bearing seat cooling channel and a first axial gap cooling channel which are sequentially communicated, and the second air channel comprises a second through hole, a shell cooling channel and a rear side cooling channel which are sequentially communicated. According to the air suspension high-speed centrifugal blower provided by the invention, the elastic rubber shock absorber is arranged, so that the main machine can keep stable in the running process, and high-frequency vibration and noise are attenuated; in addition, the host air cooling system does not need other power sources, so that vibration generated by external power sources to the host is reduced, and the damping effect is achieved.
Description
Technical Field
The invention belongs to the technical field of blowers, and particularly relates to an air suspension high-speed centrifugal blower.
Background
The existing air suspension blower can generate noise when running and vibrating at high speed, the generated noise can not only disturb the surrounding environment, but also have a certain influence on the human body. Particularly, after the outside of the blower is connected with the water cooling and air cooling system, the cooling structure and the outside inside of the main machine shell are connected with the pressurizing device, and the cooling medium inside the pressurizing device flows in the shell under the action of pressure to intensify the vibration of the shell.
The current damping mode of air suspension air blower adopts spring damping device more, and spring damper life is short, damages easily, is unfavorable for the whole atress balance of host computer.
Disclosure of Invention
The invention aims to provide an air suspension high-speed centrifugal blower, which aims to solve the problem of poor vibration reduction effect of the blower.
In order to achieve the above purpose, the invention adopts the following technical scheme: provided is an air-suspending high-speed centrifugal blower, including:
the device comprises a base, wherein an installation fixing seat for installing a host structure is arranged above the base;
the elastic seat comprises an elastic rubber shock absorber connected with the base and the mounting fixing seat; the elastic rubber shock absorbers are positioned at four corners of the base;
the air cooling system comprises an air cooling channel and a buffer cavity arranged at the rear side of the shell of the main machine structure, and the buffer cavity is positioned between the stator assembly and the rear radial bearing seat and is communicated with an air outlet pipe on the shell of the main machine structure; the air cooling channel comprises an inner cavity communicated with the volute and a first air channel and a second air channel communicated with the buffer cavity, the first air channel comprises a first through hole on the diffuser, a front bearing seat cooling channel arranged between the front radial bearing seat and the diffuser and a first axial gap cooling channel arranged between the front radial bearing seat and the rotating shaft, the second air channel comprises a second through hole on the diffuser, a shell cooling channel arranged on the shell and a rear cooling channel arranged between the rear radial bearing seat and the outer thrust bearing seat, and the second through hole is communicated with the second air channel.
As another embodiment of the application, the elastic seat further comprises a fixing piece, the fixing piece penetrates through the base, the elastic rubber shock absorber and the installation fixing seat in sequence and is used for limiting the elastic rubber shock absorber, and the fixing piece is a double-head screw.
As another embodiment of the application, the elastic rubber damper is a rubber damper block, the rubber damper block is in a cylindrical shape arranged longitudinally, and the fixing piece penetrates through the central shaft of the rubber damper block.
As another embodiment of the present application, the mounting fixture includes:
the left side and the right side of the end plate are vertically connected with L-shaped bending plates, the bending plates extend outwards, and the fixing piece penetrates through the bending plates to limit the rubber shock absorption block between the base and the bending plates;
the front support plate is positioned at the front end of the end plate, the upper end of the front support plate is provided with an arc-shaped mounting part, and the arc-shaped mounting part is connected with the outer side wall of the volute; a temperature sensor bracket is arranged on the front support plate and extends to the inlet end of the volute;
the back extension board, the back extension board is located the rear end of end plate, the upper end of back extension board has the fixed plate that extends to the front side, the fixed plate with the casing is connected.
As another embodiment of the present application, the front bearing seat cooling channel includes a first air cooling channel, a second air cooling channel located inside the first air cooling channel, and a branch air cooling channel communicating the first air cooling channel and the second air cooling channel; the first air cooling channel and the second air cooling channel are annular, the first air cooling channel is communicated with the first through hole, and the second air cooling channel is communicated with the first axial gap cooling channel.
As another embodiment of the present application, the second air duct further includes:
the first annular transition cavity is positioned between the rear radial bearing seat and the outer thrust bearing seat, and is communicated with the shell cooling channel by virtue of a communication hole formed in the rear radial bearing seat.
As another embodiment of the present application, the rear side cooling passage includes:
an inner thrust bearing cooling passage located between the inner thrust bearing and the rear radial bearing housing for cooling the inner thrust bearing; the inner thrust bearing cooling channel is arranged along the radial direction of the rear radial bearing seat, is communicated with the communication hole and is communicated with the buffer cavity by means of a second axial bearing cooling channel; the second axial gap cooling channel is positioned between the rear radial bearing and the rotating shaft;
an outer thrust bearing cooling passage located between the outer thrust bearing and the outer thrust bearing for cooling the outer thrust bearing; the outer thrust bearing cooling channel comprises a first branch channel arranged along the radial direction of the outer thrust bearing, a second branch channel arranged on the inner side of the outer thrust bearing and a third branch channel communicated with the second branch channel and the buffer cavity, and the third branch channel is distributed along the axial direction of the rotating shaft;
the second annular transition cavity is positioned in the circumferential direction of the thrust disc and communicated with the first annular transition cavity by virtue of the vent holes; the second annular transition chamber communicates simultaneously with the inner thrust bearing cooling passage and the first branch passage.
As another embodiment of the present application, further comprising:
the water cooling channels are arranged in the shell and are communicated with the water inlet pipe and the water outlet pipe which are arranged on the same side of the shell, each water cooling channel comprises a plurality of annular water cooling channels which are arranged at intervals in the axial direction of the shell, each annular water cooling channel is provided with a first blocking end and a second blocking end, a connecting water cooling channel is arranged between every two adjacent annular water cooling channels, and a plurality of connecting water cooling channels are sequentially and alternately connected with two adjacent first blocking ends and two adjacent second blocking ends.
As another embodiment of the present application, the plurality of annular water cooling channels include a first water cooling channel connected to the water inlet pipe, a second water cooling channel connected to the water outlet pipe, and a middle water cooling channel located between the first water cooling channel and the second water cooling channel, and an overflow area of the first water cooling channel and the second water cooling channel is smaller than an overflow area of the middle water cooling channel.
As another embodiment of the present application, the flow area of the first water cooling channel is equal to the flow area of the second water cooling channel.
The air suspension high-speed centrifugal blower provided by the invention has the beneficial effects that: compared with the prior art, the air suspension high-speed centrifugal blower keeps the whole stress balance of the main machine by arranging the elastic rubber shock absorber between the fixed mounting seat and the base of the main machine, so that the main machine can keep stable in the running process, and high-frequency vibration and noise are attenuated; in addition, the main machine air cooling system takes high-pressure air in the volute as cooling gas, other power energy sources are not needed, vibration generated to the main machine due to external power energy sources is reduced, and the damping effect is achieved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments or the description of the prior art 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 that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of an air suspension high-speed centrifugal blower according to an embodiment of the present invention;
fig. 2 is a schematic connection diagram of a base and an installation fixing seat according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a host structure according to an embodiment of the present invention;
FIG. 4 is a cross-sectional view taken along line A1-A1 of FIG. 3;
FIG. 5 is a cross-sectional view taken along line A2-A2 of FIG. 3;
FIG. 6 is a cross-sectional view taken along line A3-A3 of FIG. 3;
FIG. 7 is a cross-sectional view taken along line A4-A4 of FIG. 3;
FIG. 8 is a cross-sectional view taken along line B1-B1 of FIG. 3;
FIG. 9 is a cross-sectional view taken along line B2-B2 of FIG. 3;
FIG. 10 is a cross-sectional view taken along line B3-B3 of FIG. 3;
FIG. 11 is a cross-sectional view taken along line B4-B4 of FIG. 3;
FIG. 12 is a partial cross-sectional view of an air-levitation high-speed centrifugal blower provided by an embodiment of the present invention;
FIG. 13 is a schematic structural view of a front radial bearing seat according to an embodiment of the present invention;
FIG. 14 is a schematic view of a rear radial bearing housing according to an embodiment of the present invention;
fig. 15 is a schematic structural view of an external thrust bearing according to an embodiment of the present invention.
In the figure: 100. a housing; 101. an air outlet pipe; 102. a volute; 103. a housing cooling channel; 110. a diffuser; 111. a first through hole; 112. a second through hole; 120. a front radial bearing seat; 121. a first air cooling channel; 122. a second air cooling channel; 123. branching an air cooling channel; 124. an extension hole; 130. a first axial gap cooling passage; 131. a buffer chamber; 132. an outer thrust bearing cavity; 133. a second gap cooling passage; 134. a third axial gap cooling channel; 140. an outer thrust bearing; 141. a first annular transition chamber; 142. a first branch channel; 143. a communication hole; 144. a second annular transition chamber; 145. an outer thrust bearing; 146. a second branch channel; 147. a third branch channel; 150. a rear radial bearing seat; 151. an inner thrust bearing cooling passage; 152. an auxiliary channel; 153. a vent hole; 154. an inner thrust bearing; 200. a water inlet pipe; 201. a water-cooled inlet pressing plate; 202. a water outlet pipe; 203. a water-cooled outlet pressure plate; 204. a first water cooling channel; 205. a middle water cooling channel; 206. a second water cooling channel; 207. connecting with a water cooling channel; 300. a base; 301. an elastic rubber damper; 302. installing a fixing seat; 303. a double-ended screw; 304. a rear support plate; 305. a front support plate; 306. a temperature sensor support.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Referring to fig. 1 to 15, an air suspension high-speed centrifugal blower provided by the present invention will now be described. The air suspension high-speed centrifugal blower comprises a base 300, an elastic seat and an air cooling system; a mounting fixing seat 302 for mounting a host structure is arranged above the base 300; the elastic seat comprises an elastic rubber damper 301 for connecting the base 300 and the mounting fixing seat 302, and the elastic rubber damper 301 is positioned at four corners of the base 300; the air cooling system comprises an air cooling channel and a buffer cavity 131 arranged at the rear side of the shell 100, wherein the buffer cavity 131 is positioned between the stator assembly and the rear radial bearing seat 150 and is communicated with an air outlet pipe 101 on the shell 100 of the main machine structure; the air cooling channel comprises a first air channel and a second air channel which are communicated with the inner cavity of the volute 102 and the buffer cavity 131, the first air channel comprises a first through hole 111 on the diffuser 110, a front bearing seat cooling channel arranged between the front radial bearing seat 120 and the diffuser 110 and a first axial gap cooling channel 130 arranged between the front radial bearing and the rotating shaft, which are sequentially communicated, the second air channel comprises a second through hole 112 on the diffuser 110, a shell cooling channel 103 arranged on the shell 100 and a rear cooling channel arranged between the rear radial bearing seat 150 and the outer thrust bearing seat 140, which are sequentially communicated.
Compared with the prior art, the air suspension high-speed centrifugal blower provided by the invention has the advantages that the elastic seat, the mounting fixing seat 302 and the host structure are sequentially arranged on the base 300, the elastic seat is the elastic rubber damper 301, and the elastic rubber damper 301 is positioned at four corners of the base 300 and is connected with the mounting fixing seat 302, so that the overall stress balance of the host is realized, and the vibration of the host is reduced; and the elastic rubber damper 301 is more stable than the spring damper and has a longer service life.
In addition, an air cooling system is arranged in the host shell 100, an air inlet of the air cooling system is arranged in the volute 102, a large amount of high-pressure air can be generated by the volute 102 in the working process, and most of the high-pressure air is discharged from an air outlet; a small portion enters the first air duct and the second air duct from the first through hole 111 and the second through hole 112, respectively. The air in the first air channel sequentially passes through the front bearing seat cooling channel and the first axial gap cooling channel 130 and then enters the buffer cavity 131 so as to realize cooling of the front radial bearing, the rotating shaft and the inner side of the stator assembly; air in the second air duct sequentially enters the shell cooling channel 103 and the rear side cooling channel into the buffer cavity 131 through the second through hole 112 so as to realize cooling of the outer side, the thrust bearing and the rear side radial bearing of the stator assembly; the air in the buffer chamber 131 is finally discharged from the air outlet pipe 101. The air cooling channel is not connected with external power energy, so that energy loss is reduced, vibration generated to the main body shell 100 by the external power energy is reduced, and vibration frequency of the main body is reduced.
According to the air suspension high-speed centrifugal blower provided by the invention, the elastic rubber shock absorber 301 is arranged between the fixed mounting seat and the base 300 of the main machine, so that the whole stress balance of the main machine is kept, the main machine can be kept stable in the running process, and high-frequency vibration and noise are attenuated; in addition, the main machine air cooling system takes high-pressure air in the volute 102 as cooling gas, other power energy sources are not needed, vibration generated to the main machine due to external power energy sources is reduced, and the damping effect is achieved.
Optionally, the buffer chamber 131 is a cavity between the rear radial bearing seat 150 and the stator assembly on the rotating shaft, and the gas finally enters the cavity and is discharged through the air outlet pipe 101.
Optionally, a third axial gap cooling channel 134 is also present between the stator assembly and the shaft, the third axial gap cooling channel 134 communicating the first axial gap cooling channel 130 with the buffer chamber 131.
Optionally, the first through hole 111 and the second through hole 112 are both inclined circular holes.
Optionally, an extension hole 124 is provided on the front radial bearing seat 120, and the extension hole 124 communicates with the second through hole 112 and the housing cooling channel 103.
In some possible embodiments, referring to fig. 1 and 2, the elastic seat further includes a fixing member, which sequentially penetrates through the base 300, the elastic rubber damper 301, and the mounting fixing base 302, for limiting the elastic rubber damper 301, and the fixing member is a double-headed screw 303.
Specifically, the four side walls of the base 300 are all connected with connecting plates extending to the lower side, the connecting plates are L-shaped plates, and one side of the connecting plates away from the base 300 is used for connecting a fan case. A receiving cavity is provided between the base 300 and the fan case.
The lower end of the double-ended screw 303 extends through the base plate and into the receiving cavity and is connected by means of a nut. The upper end of the double-headed screw 303 penetrates the elastic rubber damper 301 and the mounting fixing base 302 in order, and is fastened by nuts at the end portion extending out of the mounting fixing base 302.
In some possible embodiments, referring to fig. 1 and 2, the elastic rubber damper 301 is a rubber damper block, the rubber damper block is a cylinder disposed longitudinally, and the fixing member penetrates through a central axis of the rubber damper block.
Specifically, the elastic rubber damper 301 is a cylindrical rubber damper block, which is longitudinally disposed on the bottom plate, and the upper end of which is attached to the lower end surface of the mounting fixing base 302.
When in installation, the fixing piece is a double-end screw 303, the lower end of the double-end screw 303 penetrates through the base 300 and is fixed through a nut, and then the double-end screw 303 is sleeved with a rubber shock-absorbing block, and the axis of the rubber shock-absorbing block is overlapped with the axis of the double-end screw 303. After the rubber damper blocks at the four corners are mounted, the mounting fixing base 302 is placed at the upper end of the rubber damper blocks, and finally the upper ends of the double-headed screws 303 are fixed through bolts.
In some possible embodiments, referring to fig. 1 and 2, the mounting fixture 302 includes an end plate, a front support plate 305, and a rear support plate 304; the left and right sides of the end plate are vertically connected with L-shaped bending plates, the bending plates extend outwards, and the fixing piece penetrates through the bending plates to limit the rubber shock absorption block between the base 300 and the bending plates; the front support plate 305 is positioned at the front end of the end plate, the upper end of the front support plate 305 is provided with an arc-shaped mounting part, and the arc-shaped mounting part is connected with the outer side wall of the volute 102; a temperature sensor bracket 306 is arranged on the front support plate 305, and the temperature sensor bracket 306 extends to the inlet end of the volute 102; the rear support plate 304 is positioned at the rear end of the end plate, and the upper end of the rear support plate 304 has a fixing plate extending toward the front side, and the fixing plate is connected with the housing 100.
Specifically, the left and right sides of the end plate of the mounting fixing base 302 are provided with L-shaped bending plates extending downward, each bending plate comprises a vertical plate and a transverse plate, the bending plates are vertically connected to the end plate, the transverse plates are vertically connected with the vertical plates and extend outwards, and the transverse plates are provided with mounting holes for connecting fixing pieces.
The front and rear ends of the end plate are respectively provided with a front support plate 305 and a rear support plate 304, the front support plate 305 and the rear support plate 304 both extend upwards, the front support plate 305 is used for fixing the volute 102 of the host structure, and the rear support plate 304 is used for fixing the housing 100 of the host structure.
The upper end of the front support plate 305 is provided with an arc-shaped mounting part attached to the outer side wall of the volute 102, a plurality of bolts are arranged on the arc-shaped mounting part, and the bolts are connected with the volute 102 and used for fixing the front end of the host; the upper end of back extension board 304 is provided with the fixed plate, has seted up the bolt hole on the fixed plate, and the casing 100 of fixed plate and host computer passes through bolted connection.
In some possible embodiments, referring to fig. 9 and 13, the front bearing seat cooling channel includes a first air cooling channel 121, a second air cooling channel 122 located inside the first air cooling channel 121, and a branch air cooling channel 123 communicating the first air cooling channel 121 and the second air cooling channel 122, where the first air cooling channel 121 and the second air cooling channel 122 are both annular, and the first air cooling channel 121 communicates with the first through hole 111; the second air cooling passage 122 communicates with the first axial gap cooling passage 130.
Specifically, a first annular groove and a second annular groove, and a branching groove communicating the first annular groove and the second annular groove are opened on the front sidewall of the front-side radial bearing housing 120. When the radial bearing block is installed, the front side wall of the front radial bearing block 120 is attached to the rear side wall of the diffuser 110, the first annular groove and the second annular groove form a first air cooling channel 121 and a second air cooling channel 122 by means of the rear side wall of the diffuser 110, and the branch groove forms a branch air cooling channel 123 by means of the rear side wall of the diffuser 110.
Optionally, the inner diameter of the first air cooling channel 121 is larger than the outer diameter of the second air cooling channel 122, and the cross-sectional area of the first air cooling channel 121 is smaller than the cross-sectional area of the second air cooling channel 122.
Optionally, the plurality of branch air cooling passages 123 is provided, and the plurality of branch air cooling passages 123 are uniformly distributed in the circumferential direction of the second air cooling passage 122. The length direction of the branch air cooling channel 123 is consistent with the radial direction of the front radial bearing seat 120.
Optionally, four branch air cooling channels 123 are provided.
In some possible embodiments, referring to fig. 12, the second air duct further includes a first annular transition chamber 141, the first annular transition chamber 141 being located between the rear radial bearing housing 150 and the outer thrust bearing housing 140, the first annular transition chamber 141 being in communication with the housing cooling passage 103 via a communication hole 143 provided in the rear radial bearing housing 150.
A first annular transition groove is formed in the rear side wall of the rear radial bearing seat 150, and the first annular transition groove is located on the outer side of the thrust disc. The rear radial bearing housing 150 is attached to the outer thrust bearing housing 140 such that the first annular transition groove forms a first annular transition chamber 141 with the front side wall of the outer thrust bearing housing 140.
The first annular transition chamber 141 communicates with the housing cooling passage 103 via a communication hole 143.
Alternatively, the housing cooling passage 103 is provided along the axial direction of the housing 100, and its air outlet is connected to the communication hole 143. The communication hole 143 is inclined, and the longitudinal direction of the communication hole 143 is inclined with the radial direction of the rear radial bearing housing 150.
In some possible embodiments, referring to fig. 11, 12, 14 and 15, the aft side cooling channels include an inner thrust bearing cooling channel 151, an outer thrust bearing cooling channel, a second annular transition cavity 144; an inner thrust bearing cooling passage 151 is located between the inner thrust bearing 154 and the rear radial bearing housing 150 for cooling the inner thrust bearing 154; the inner thrust bearing cooling channel 151 is disposed along the radial direction of the rear radial bearing housing 150, the inner thrust bearing cooling channel 151 communicates with the communication hole 143 and with the buffer chamber 131 via the second axial cooling channel 133; the second gap cooling channel 133 is located between the rear radial bearing and the rotating shaft; the outer thrust bearing cooling passage is located between the outer thrust bearing 145 and the outer thrust bearing 140 for cooling the outer thrust bearing 145; the outer thrust bearing cooling passage includes a first branch passage 142 provided along a radial direction of the outer thrust bearing 140, a second branch passage 146 opened inside the outer thrust bearing 140, and a third branch passage 147 communicating the second branch passage 146 and the buffer chamber 131, the third branch passage 147 being distributed along an axial direction of the rotating shaft; the second annular transition cavity 144 is located in the circumferential direction of the thrust disc, and the second annular transition cavity 144 is communicated with the first annular transition cavity 141 by means of the vent 153; the second annular transition chamber 144 communicates with both the inner thrust bearing cooling passage 151 and the first branch passage 142.
Specifically, the rear radial bearing housing 150 is connected to the outer thrust bearing housing 140 with an installation space formed therebetween, in which the inner thrust bearing 154, the thrust disk, and the outer thrust bearing 145 are all installed, and an inner thrust bearing cooling passage 151 for cooling the inner thrust bearing 154 and an outer thrust bearing cooling passage for cooling the outer thrust bearing 145 are provided at both sides of the thrust disk, respectively.
A second annular transition groove and a plurality of inner thrust bearing cooling channels 151 arranged along the radial direction of the rear radial bearing seat 150 are arranged on the rear side wall of the rear radial bearing seat 150, an air inlet of each inner thrust bearing cooling channel 151 is communicated with the second annular transition groove, and an air outlet of each inner thrust bearing cooling channel is positioned at the joint of the rear radial bearing and the rotating shaft and is communicated with the second gap cooling channel 133 between the rear radial bearing and the rotating shaft. Optionally, the second annular transition groove communicates with the first annular transition groove via vent 153.
The outer diameter of the second annular transition groove is larger than that of the thrust disc, and the inner diameter of the second annular transition groove is consistent with that of the thrust disc. The second annular transition groove forms a second annular transition chamber 144 with the outer thrust bearing 140, and the second annular transition chamber 144 is located outside of the thrust disc. The second annular transition chamber 144 communicates with both the inner thrust bearing cooling passage 151 and the outer thrust bearing cooling passage on both sides of the thrust disc.
The plurality of inner thrust bearing cooling passages 151 are disposed along the radial direction of the rear radial bearing housing 150 and are uniformly distributed on the rear radial bearing housing 150. A notch is formed in the radial direction of the rear radial bearing seat 150, and the notch is attached to the inner thrust bearing 154 to form an inner thrust bearing cooling channel 151; similarly, a notch is formed in the front side wall of the outer thrust bearing 140, and the notch is fitted with the outer thrust bearing 145 to form a first branch channel 142, and the first branch channel 142 is used for cooling the outer thrust bearing 145.
An outer thrust bearing chamber 132 is provided in the middle of the outer thrust bearing 140, and the end of the rotating shaft extends into the outer thrust bearing chamber 132, the outer thrust bearing chamber 132 communicating with the first branch passage 142.
A second branched passage 146 provided along a radial direction thereof is opened at a middle portion of the outer thrust bearing 140 in a thickness direction thereof, and the second branched passage 146 communicates with the outer thrust bearing cavity 132; the outer thrust bearing seat 140 is further provided with a third branch passage 147, and the length direction of the third branch passage 147 is consistent with the thickness direction of the outer thrust bearing seat 140, is communicated with the second branch passage 146, and extends to one side of the outer thrust bearing seat 140 close to the rear radial bearing seat 150.
An auxiliary channel 152 is further formed on the rear radial bearing seat 150, the auxiliary channel 152 is disposed along the axial direction of the rotating shaft, and the auxiliary channel 152 corresponds to the third branch channel 147 one by one and is communicated with the third branch channel 147 and the buffer cavity 131.
Cooling gas entering the second annular transition chamber 144, a portion of which passes from the inner thrust bearing cooling passage 151 through the second axial gap cooling passage 133 and into the buffer chamber 131; another portion enters the buffer chamber 131 from the first branch passage 142, the outer thrust bearing chamber 132, the second branch passage 146, the third branch passage 147, and the auxiliary passage 152.
Alternatively, there are a plurality of inner thrust bearing cooling passages 151, and the plurality of inner thrust bearing cooling passages 151 are radially distributed.
Optionally, the first branch channel 142 and the second branch channel 146 are multiple.
Optionally, the third branch channels 147 are in one-to-one correspondence with the second branch channels 146.
Optionally, the second annular transition cavity 144 communicates with the first annular transition cavity 141 via a plurality of ventilation holes 153, and the plurality of ventilation holes 153 are circumferentially arranged in the second annular transition cavity 144.
In some possible embodiments, referring to fig. 3 to 7, the main structure further includes a water cooling channel; the water cooling channel is arranged in the shell 100 and communicated with the water inlet pipe 200 and the water outlet pipe 202 which are arranged on the same side of the shell 100, the water cooling channel comprises a plurality of annular water cooling channels which are arranged along the axial direction of the shell 100 at intervals, the annular water cooling channels are provided with first blocking ends and second blocking ends, a connecting water cooling channel 207 is arranged between two adjacent annular water cooling channels, and the plurality of connecting water cooling channels 207 are sequentially and alternately connected with two adjacent first blocking ends and two adjacent second blocking ends.
The water cooling channel is communicated with the water inlet pipe 200 and the water outlet pipe 202, and comprises a plurality of annular water cooling channels which are arranged at intervals along the axial direction of the blower housing 100, the annular water cooling channels form a spiral reciprocating water channel which is sequentially communicated from front to back by means of a first plugging end and a second plugging end at two ends of the annular water cooling channels and a connecting water cooling channel 207 which is communicated with two adjacent annular water cooling channels, the cooling area of the spiral reciprocating water channel is increased, and the integral cooling efficiency of a host machine is improved. In addition, the water inlet pipe 200 and the water outlet pipe 202 are positioned on the same side of the casing 100, so that the layout mode of the water pipes on the outer side of the casing 100 is changed, space is provided for other arrangement on the casing 100, and vibration of an external power source to the main casing 100 is reduced.
Meanwhile, the shell cooling channel 103 is positioned at one side of the annular water cooling channel, so that cooling of the part of the stator assembly uncovered by the annular water cooling channel is complemented, and the cooling effect is improved; and the layout in the housing 100 is adjusted to reduce the influence of the cooling system on the main housing 100.
Optionally, the connecting water cooling channel 207 is perpendicular to the annular channel, and the length of the connecting water cooling channel 207 is smaller than the width of the cross section of the annular water cooling channel.
The connection water cooling passage 207 is vertically connected to the annular water cooling passage, and the length direction of the connection water cooling passage 207 coincides with the axial direction of the housing 100. Optionally, the length of the connecting water cooling channel 207 is equal to the distance between two adjacent annular water cooling channels, and the width of the annular water cooling channels along the axial direction of the housing 100 is greater than the distance between the two adjacent annular water cooling channels.
Alternatively, an annular water cooling channel is looped around the circumference of the housing 100 and forms a helical reciprocating cooling water flow path by means of the first and second blocking ends. Optionally, a plugging plate is disposed on the housing 100, and the plugging plate sequentially penetrates through a plurality of annular water cooling channels, and under the action of the plugging plate, the annular water cooling channels form a first plugging end and a second plugging end, and a central angle of the annular water cooling channels is greater than 180 ° and smaller than 360 °.
In some possible embodiments, referring to fig. 4 to 7, the plurality of annular water cooling passages includes a first water cooling passage 204 connected to the water inlet pipe 200, a second water cooling passage 206 connected to the water outlet pipe 202, and a middle water cooling passage 205 located between the first water cooling passage 204 and the second water cooling passage 206, and an overflow area of the first water cooling passage 204 and the second water cooling passage 206 is smaller than an overflow area of the middle water cooling passage 205.
The plurality of annular channels include a first water cooling channel 204 and a second water cooling channel 206 at two ends, wherein the first water cooling channel 204 is connected to the water inlet pipe 200, and the second water cooling channel 206 is connected to the water outlet pipe 202. During cooling, cooling water enters the first water cooling channel 204 from the water inlet pipe 200 and flows to the middle water cooling channel 205, and after sequentially passing through the plurality of middle water cooling channels 205, enters the second water cooling channel 206, and finally flows out from the water outlet pipe 202 communicated with the second water cooling channel 206.
The outer diameters of the first water cooling channel 204, the second water cooling channel 206 and the middle water cooling channel 205 are all consistent. The cooling water enters the middle water cooling channel 205 from the first water cooling channel 204, and the second water cooling channel 206 can be filled only when the middle water cooling channel 205 is fully filled. Thus, while ensuring that the second water cooling gallery 206 is full, the other water cooling galleries must be full. Reducing the flow area of the second water cooling channel 206 and the first water cooling channel 204 may reduce the water flow rate in the middle water cooling channel 205. Optionally, the flow area of the first water cooling channel 204 is equal to the flow area of the second water cooling channel 206.
Alternatively, the water inlet pipe 200 is vertically connected to the first water cooling passage 204, and the water outlet pipe 202 is vertically connected to the second water cooling passage 206.
In some possible embodiments, referring to fig. 4 to 7, the inner side wall of the annular channel is provided with an annular protrusion.
The annular bulge is positioned on the inner side wall of the annular channel and in the middle of the annular channel, so that the contact area between the annular channel and the shell 100 is increased, and the heat exchange effect is improved. In addition, the annular protrusion increases the thickness of the housing 100 inside the annular channel, functioning as a reinforcing rib.
Optionally, the cross section of the heat dissipation part is semicircular. On the annular channel inside wall that the plane side of radiating part laminating, the arcwall face of radiating part contacts with the cooling water in the annular channel.
In some possible embodiments, referring to fig. 3, 5 and 7, the blower water cooling system further comprises a water cooled inlet platen 201 and a water cooled outlet platen 203; the water inlet pipe 200 is connected to the housing 100 by means of a water cooled inlet platen 201; the outlet pipe 202 is connected to the housing 100 by means of a water cooled outlet platen 203.
The water inlet pipe 200 and the water outlet pipe 202 are both tubular, a first clamping part protruding outwards is arranged on the outer side wall of the water inlet pipe 200, the water cooling inlet pressing plate 201 is sleeved on the outer side wall of the water inlet pipe 200 and is connected to the shell 100 through bolts, and the water cooling inlet pressing plate 201 is abutted to the first clamping part and used for fixing the water inlet pipe 200 on the shell 100.
The outer side wall of the water outlet pipe 202 is provided with a second clamping part protruding outwards, the outer side wall of the water outlet pipe 202 is sleeved with a water-cooling outlet pressing plate 203, the water-cooling outlet pressing plate 203 is connected to the shell 100 through bolts, and the water-cooling outlet pressing plate 203 is abutted to the second clamping part and used for fixing the water outlet pipe 202 to the shell 100.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (8)
1. Air suspension high-speed centrifugal blower, its characterized in that includes:
the device comprises a base, wherein an installation fixing seat for installing a host structure is arranged above the base;
the elastic seat comprises an elastic rubber shock absorber connected with the base and the mounting fixing seat; the elastic rubber shock absorbers are positioned at four corners of the base;
the air cooling system comprises an air cooling channel and a buffer cavity arranged at the rear side of the shell of the main machine structure, and the buffer cavity is positioned between the stator assembly and the rear radial bearing seat and is communicated with an air outlet pipe on the shell of the main machine structure; the air cooling channel comprises a first air channel and a second air channel which are communicated with an inner cavity of the volute and the buffer cavity, the first air channel comprises a first through hole on the diffuser, a front bearing seat cooling channel arranged between the front radial bearing seat and the diffuser and a first axial gap cooling channel arranged between the front radial bearing and the rotating shaft, the first through hole on the diffuser, a shell cooling channel arranged on the shell and a rear cooling channel arranged between the rear radial bearing seat and the outer thrust bearing seat, the second through hole on the diffuser, the shell cooling channel and the rear cooling channel are sequentially communicated;
the second air duct further includes:
the first annular transition cavity is positioned between the rear radial bearing seat and the outer thrust bearing seat and is communicated with the shell cooling channel by virtue of a communication hole formed in the rear radial bearing seat;
the rear side cooling passage includes:
an inner thrust bearing cooling passage located between the inner thrust bearing and the rear radial bearing housing for cooling the inner thrust bearing; the inner thrust bearing cooling channel is arranged along the radial direction of the rear radial bearing seat, is communicated with the communication hole and is communicated with the buffer cavity by means of a second axial bearing cooling channel; the second axial gap cooling channel is positioned between the rear radial bearing and the rotating shaft;
an outer thrust bearing cooling passage located between the outer thrust bearing and the outer thrust bearing for cooling the outer thrust bearing; the outer thrust bearing cooling channel comprises a first branch channel arranged along the radial direction of the outer thrust bearing, a second branch channel arranged on the inner side of the outer thrust bearing and a third branch channel communicated with the second branch channel and the buffer cavity, and the third branch channel is distributed along the axial direction of the rotating shaft;
the second annular transition cavity is positioned in the circumferential direction of the thrust disc and communicated with the first annular transition cavity by virtue of the vent holes; the second annular transition chamber communicates simultaneously with the inner thrust bearing cooling passage and the first branch passage.
2. The air suspension high speed centrifugal blower of claim 1, wherein the elastic base further comprises a fixing member, the fixing member penetrates through the base, the elastic rubber damper and the mounting fixing base in sequence, and is used for limiting the elastic rubber damper, and the fixing member is a double-headed screw.
3. The air suspension high speed centrifugal blower of claim 2 wherein said elastomeric damper is a rubber damper block, said rubber damper block being longitudinally disposed cylindrical in shape, said securing member extending through a central axis of said rubber damper block.
4. The air suspension high speed centrifugal blower of claim 3 wherein said mounting fixture comprises:
the left side and the right side of the end plate are vertically connected with L-shaped bending plates, the bending plates extend outwards, and the fixing piece penetrates through the bending plates to limit the rubber shock absorption block between the base and the bending plates;
the front support plate is positioned at the front end of the end plate, the upper end of the front support plate is provided with an arc-shaped mounting part, and the arc-shaped mounting part is connected with the outer side wall of the volute; a temperature sensor bracket is arranged on the front support plate and extends to the inlet end of the volute;
the back extension board, the back extension board is located the rear end of end plate, the upper end of back extension board has the fixed plate that extends to the front side, the fixed plate with the casing is connected.
5. The air suspension high speed centrifugal blower of claim 1, wherein said front bearing housing cooling passage comprises a first air cooling passage, a second air cooling passage located inside said first air cooling passage, and a branch air cooling passage communicating said first air cooling passage and said second air cooling passage; the first air cooling channel and the second air cooling channel are annular, the first air cooling channel is communicated with the first through hole, and the second air cooling channel is communicated with the first axial gap cooling channel.
6. The air-suspended high-speed centrifugal blower of claim 1, further comprising:
the water cooling channels are arranged in the shell and are communicated with the water inlet pipe and the water outlet pipe which are arranged on the same side of the shell, each water cooling channel comprises a plurality of annular water cooling channels which are arranged at intervals in the axial direction of the shell, each annular water cooling channel is provided with a first blocking end and a second blocking end, a connecting water cooling channel is arranged between every two adjacent annular water cooling channels, and a plurality of connecting water cooling channels are sequentially and alternately connected with two adjacent first blocking ends and two adjacent second blocking ends.
7. The air-suspended high-speed centrifugal blower of claim 6, wherein the plurality of annular water-cooling channels comprises a first water-cooling channel connected to the water inlet pipe, a second water-cooling channel connected to the water outlet pipe, and a middle water-cooling channel located between the first water-cooling channel and the second water-cooling channel, wherein the flow area of the first water-cooling channel and the second water-cooling channel is smaller than the flow area of the middle water-cooling channel.
8. The air-suspending high-speed centrifugal blower of claim 7, wherein the flow area of the first water-cooling passage is equal to the flow area of the second water-cooling passage.
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| CN202210626220.XA CN114922864B (en) | 2022-06-02 | 2022-06-02 | Air suspension high-speed centrifugal blower |
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| CN202210626220.XA CN114922864B (en) | 2022-06-02 | 2022-06-02 | Air suspension high-speed centrifugal blower |
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| CN213717784U (en) * | 2020-10-15 | 2021-07-16 | 河北金士顿科技有限责任公司 | Cooling system of two-stage air suspension centrifugal permanent magnet motor direct-drive air compressor |
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| US7108488B2 (en) * | 2004-03-26 | 2006-09-19 | Honeywell International, Inc. | Turbocharger with hydrodynamic foil bearings |
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|---|---|---|---|---|
| CN203130555U (en) * | 2013-03-11 | 2013-08-14 | 株洲联诚集团有限责任公司 | Cooling ventilator for wind driven generator |
| CN204481637U (en) * | 2015-04-03 | 2015-07-15 | 浙江奇力电机有限公司 | The reliable motor of the good damping of a kind of heat radiation |
| CN109245431A (en) * | 2018-09-10 | 2019-01-18 | 石家庄金士顿轴承科技有限公司 | A kind of fuel battery air compressor high-speed motor cooling body |
| CN213717784U (en) * | 2020-10-15 | 2021-07-16 | 河北金士顿科技有限责任公司 | Cooling system of two-stage air suspension centrifugal permanent magnet motor direct-drive air compressor |
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Effective date of registration: 20230704 Address after: 052300 south of Weiyi Road, Xinji Economic Development Zone, Shijiazhuang City, Hebei Province Applicant after: Hebei Kingston Technology Co.,Ltd. Applicant after: Beishui HUICAI (Beijing) Technology Co.,Ltd. Address before: 052300 south of Weiyi Road, Xinji Economic Development Zone, Shijiazhuang City, Hebei Province Applicant before: Hebei Kingston Technology Co.,Ltd. |
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