CN217307465U - Liquid air cooling separation device for high-speed motor - Google Patents
Liquid air cooling separation device for high-speed motor Download PDFInfo
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- CN217307465U CN217307465U CN202221076724.0U CN202221076724U CN217307465U CN 217307465 U CN217307465 U CN 217307465U CN 202221076724 U CN202221076724 U CN 202221076724U CN 217307465 U CN217307465 U CN 217307465U
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Abstract
The utility model discloses a liquid air cooling separation device for a high-speed motor, which comprises a top liquid cooling supporting block, wherein a lower annular block is fixed on the bottom surface of the top liquid cooling supporting block, and a separation barrel is fixed on the bottom surface of the lower annular block; it is with the middle part shaping ladder through-hole of top liquid cooling supporting shoe, the upper portion shaping notch cuttype sleeve part of heat conduction protective case, the upper portion major diameter spiro union portion of notch cuttype sleeve part and the middle part spiro union of ladder through-hole, the outer wall of the middle part connecting sleeve portion of notch cuttype sleeve part is hugged closely with the inboard wall of the bottom minor diameter hole section of ladder through-hole mutually, realize the location, guarantee that the ladder through-hole of heat conduction protective case and top liquid cooling supporting shoe is basically concentric, accord with the designing requirement, the main shaft of installation also is basically concentric with the ladder through-hole in the assurance follow-up heat conduction protective case, guarantee the bearing normal operating of main shaft bottom and casing connection, can not block and die, guarantee the normal operating of whole equipment.
Description
The technical field is as follows:
the utility model relates to the technical field of electric machine, more specifically say and relate to a liquid forced air cooling separator for high-speed motor.
Background art:
the existing high-speed motor has the problem that when the rotating speed is increased, a large amount of heat is generated, the heat must be taken away in time, and otherwise the motor is burnt out due to high temperature. Therefore, chinese patent application No. 202022640371.X discloses a high-speed motor with high-efficiency cooling, but the air cooling effect adopted by the motor is limited, the cooling is not fast enough, and the efficiency is low, so chinese patent application No. 202122424089.2 discloses a strong liquid-cooling high-speed motor, which adopts cooling liquid and air cooling to simultaneously dissipate heat, and improves the heat dissipation effect, and the liquid-air separation device is composed of a cooling support block, a lower annular block, a liquid-cooling circulation sleeve and an extension sleeve, so as to place the liquid in the liquid-cooling circulation sleeve, and place the air outside the liquid-cooling circulation sleeve, however, the cooling support block is fixed on the housing, during the processing, the center line of the screw hole in the center of the cooling support block can be ensured to be a positive center line, and the extension sleeve screwed in the screw hole needs to be ensured to coincide with the center line of the screw hole, and simultaneously, the main shaft of the motor is inserted in the extension sleeve and connected with the top of the extension sleeve through a bearing forming heat conduction connecting block, the main shaft of motor also needs the coincidence with the central line of spiro union hole, guarantee the concentricity, because it adopts the screw thread to be connected with the cooling supporting shoe to extend the cover, because the clearance of screw thread is big, it can't guarantee to extend the central axis of cover and the spiro union hole at the center of cooling supporting shoe are concentric, it can make the central axis slope or the skew of extending the cover, and the top of main shaft is connected with the fashioned heat conduction connecting block in extension cover top through the bearing, the bottom of main shaft is the bottom surface that stretches out the extension cover and is connected with the casing lower part, the casing is fixed with the cooling supporting shoe, therefore, when extending the cover deviation, its main shaft also can deviate, thereby make the bottom of main shaft and the being connected of casing produce the deviation, make the bearing that main shaft bottom and casing are connected will block after operation a period, influence its normal use, need change the bearing often, the effect is poor.
The utility model has the following contents:
the utility model aims at overcoming prior art's is not enough, the utility model provides a liquid air-cooled separator is used to high-speed motor, it is with the middle part shaping ladder through-hole of top liquid cooling supporting shoe, the upper portion shaping notch cuttype sleeve part of heat conduction protective case, the middle part spiro union hole section spiro union of the upper portion major diameter spiro union part of notch cuttype sleeve part and ladder through-hole, the outer wall of the middle part connecting sleeve part of notch cuttype sleeve part is hugged closely with the inboard wall of the bottom minor diameter hole section of ladder through-hole mutually, realize the location, guarantee that the ladder through-hole of heat conduction protective case and top liquid cooling supporting shoe is basically concentric, accord with the design requirement, the main shaft of guaranteeing installation also is basically concentric with the ladder through-hole in the follow-up heat conduction protective case, guarantee the bearing normal operating that main shaft bottom and casing are connected, can not die, guarantee the normal operating of whole equipment.
The utility model provides a technical problem's scheme is:
a liquid air cooling separation device for a high-speed motor comprises a top liquid cooling supporting block, wherein a lower annular block is fixed on the bottom surface of the top liquid cooling supporting block, and a separation barrel is fixed on the bottom surface of the lower annular block; the top surface middle part of the top liquid cooling supporting block is formed with a middle groove extending downwards, the bottom surface middle part of the top liquid cooling supporting block is formed with a convex connecting part extending downwards, the bottom surface middle part of the middle groove is formed with a step through hole extending downwards, the bottom end of the step through hole extends out of the bottom surface middle part of the convex connecting part, the step through hole comprises an upper large-diameter hole section, a middle screw joint hole section and a bottom small-diameter hole section, the diameter of the upper large-diameter hole section is larger than that of the middle screw joint hole section, the diameter of the middle screw joint hole end is larger than that of the bottom small-diameter hole section, a heat-conducting protective sleeve is inserted in the step through hole, the top end of the heat-conducting protective sleeve is formed with a large-diameter heat-conducting sleeve body part with the outer diameter larger than the upper outer side wall of the heat-conducting protective sleeve, the lower part of the large-diameter heat-conducting sleeve body part is inserted in the upper large-diameter hole section of the step through hole, the bottom surface edge part of the large-diameter sleeve body part is pressed on the top surface of the upper large-diameter hole section of the step through hole, the upper portion of heat conduction protective case is notch cuttype sleeve pipe portion, and notch cuttype sleeve pipe portion includes upper portion major diameter spiro union portion, middle part connecting sleeve portion and the bottom connecting sleeve portion that the external diameter from top to bottom dwindled gradually, and upper portion major diameter spiro union portion is hugged closely with the inboard wall of the bottom minor diameter hole section of ladder through-hole with the middle part spiro union of screw joint hole section looks spiro union of ladder through-hole, the outer wall of middle part connecting sleeve portion.
The outer diameter of the heat-conducting protective sleeve below the stepped sleeve portion is smaller than that of the bottom connecting sleeve portion, a connecting sleeve portion extending downwards is formed at the bottom end of the heat-conducting protective sleeve, the connecting sleeve portion is clamped in a central through hole formed in the middle of the bottom surface of the separating cylinder, and the outer side wall of the connecting sleeve portion is pressed on the inner side wall of the central through hole.
The outer diameter of the connecting sleeve body part is smaller than the outer diameter of the bottom of the heat-conducting protective sleeve;
the middle part of the bottom plate of the separation cylinder is provided with a bottom plate connecting sleeve part which extends upwards, the middle part of the bottom plate connecting sleeve part is provided with a central through hole, the bottom end of the central through hole extends out of the bottom surface of the bottom plate of the separation cylinder, and the edge part of the bottom end of the heat-conducting protective sleeve is pressed against the top surface of the bottom plate connecting sleeve part.
At least three annular grooves are formed in the outer side wall of the connecting sleeve portion, the bottom sealing ring is nested in the corresponding annular groove, and the outer side wall of the bottom sealing ring is pressed against the inner side wall of the central through hole of the bottom plate connecting sleeve portion.
A plurality of arc through grooves are formed in the bottom surface of the middle groove, all the arc through grooves are uniformly distributed on the bottom surface of the middle groove by taking the central axis of the top liquid cooling supporting block as the center, and the arc through grooves are communicated with the separation barrel.
Side feed liquid hole and side play liquid hole have the shaping respectively on the left side wall of middle part recess and the right side wall, and the shaping of the outer end bottom surface in side feed liquid hole has the feed liquor through-hole of arc form, and the shaping of the outer end bottom surface in side play liquid hole has vertical play liquid through-hole.
A horizontal radial extension edge is formed on the outer side wall of the top of the separation barrel, an annular positioning groove is formed on the inner side wall of the bottom surface of the lower annular block, the horizontal radial extension edge is inserted and sleeved in the annular positioning groove, the top surface of the horizontal radial extension edge is pressed against the top surface of the annular positioning groove, a sealing ring is clamped between the top surface of the horizontal radial extension edge and the top surface of the annular positioning groove, and the sealing ring is nested in an annular sealing groove formed on the top surface of the horizontal radial extension edge; the bottom surface shaping on the limit is extended radially to the level has a plurality of bellied rib downwards, and the middle part shaping of rib has the central through-hole of connection, and the central through-hole of connection aligns from top to bottom and corresponds with the fashioned connection spiro union hole on the top surface of annular positioning groove.
The bottom surface edge of top liquid cooling supporting shoe shaping has outer annular groove, and the top surface edge shaping of lower annular piece has last annular bulge loop, goes up the annular bulge loop plug bush in outer annular groove, and the bottom surface of top liquid cooling supporting shoe is pressed down on the top surface of annular piece down, and nested in the annular seal recess of the bottom surface of top liquid cooling supporting shoe has first sealing washer, and the bottom surface of first sealing washer is pressed down on the top surface of annular piece down.
The utility model discloses an outstanding effect is:
1. it is with the middle part shaping ladder through-hole of top liquid cooling supporting shoe, the upper portion shaping notch cuttype sleeve part of heat conduction protective case, the upper portion major diameter spiro union portion of notch cuttype sleeve part and the middle part spiro union of ladder through-hole, the outer wall of the middle part connecting sleeve portion of notch cuttype sleeve part is hugged closely with the inboard wall of the bottom minor diameter hole section of ladder through-hole mutually, realize the location, guarantee that the ladder through-hole of heat conduction protective case and top liquid cooling supporting shoe is basically concentric, accord with the designing requirement, the main shaft of installation also is basically concentric with the ladder through-hole in the assurance follow-up heat conduction protective case, guarantee the bearing normal operating of main shaft bottom and casing connection, can not block and die, guarantee the normal operating of whole equipment.
2. The bottom surface shaping on its horizontal radial extension limit of separating the barrel has a plurality of bellied rib downwards, the middle part shaping of rib has the center of connection through-hole, the center of connection through-hole aligns and corresponds from top to bottom with fashioned connection spiro union hole on annular positioning groove's the top surface, make its connecting bolt's screw rod portion can the plug bush in center of connection through-hole and spiro union in connecting the spiro union hole, it leans on fixedly to press the horizontal radial extension limit with lower ring block mutually, the joint strength of separating the barrel when its rib increases bolted connection, guarantee the joining effect.
Description of the drawings:
fig. 1 is a partial cross-sectional view of the present invention;
FIG. 2 is an alternate angle partial cross-sectional view of the present invention;
fig. 3 is a partial structural schematic diagram of the present invention;
FIG. 4 is a schematic view of an alternate embodiment of the structure of FIG. 3;
fig. 5 is a partial cross-sectional view of the top liquid cooled support block of the present invention.
The specific implementation mode is as follows:
in an embodiment, as shown in fig. 1 to 5, a liquid-air cooling separation device for a high-speed motor includes a top liquid-cooling support block 30, a lower annular block 700 is fixed to the bottom surface of the top liquid-cooling support block 30, and a separation cylinder 80 is fixed to the bottom surface of the lower annular block 700; a middle groove 31 extending downwards is formed in the middle of the top surface of the top liquid cooling supporting block 30, a convex connecting part 32 extending downwards is formed in the middle of the bottom surface of the top liquid cooling supporting block 30, a stepped through hole 310 extending downwards is formed in the middle of the bottom surface of the middle groove 31, the bottom end of the stepped through hole 310 extends out of the middle of the bottom surface of the convex connecting part 32, the stepped through hole 310 comprises an upper large-diameter hole section, a middle screw joint hole section and a bottom small-diameter hole section, the diameter of the upper large-diameter hole section is larger than that of the middle screw joint hole section, the diameter of the middle screw joint hole end is larger than that of the bottom small-diameter hole section, the heat-conducting protective sleeve 61 is inserted in the stepped through hole 310, a large-diameter heat-conducting sleeve body part 60 with the outer diameter larger than the upper outer side wall of the heat-conducting protective sleeve 61 is formed at the top end of the heat-conducting protective sleeve 61, and the lower part of the large-diameter heat-conducting sleeve body 60 is inserted in the upper large-diameter hole section of the stepped through hole 310, the bottom side of the large-diameter sleeve part 60 is pressed against the top surface of the upper large-diameter hole section of the stepped through hole 310, the upper part of the heat-conducting protective sleeve 61 is a stepped sleeve part, the stepped sleeve part comprises an upper large-diameter screwing part 611, a middle connecting sleeve part 612 and a bottom connecting sleeve part 613, the outer diameter of the upper large-diameter screwing part 611 is gradually reduced from top to bottom, the middle screwing part 611 is screwed with the middle screwing hole section of the stepped through hole 310, and the outer wall surface of the middle connecting sleeve part 612 is tightly attached to the inner side wall of the bottom small-diameter hole section of the stepped through hole 310. In the actual machining and installation, in order to ensure that the upper part of the heat-conducting protective sleeve 61 can rotate and screw the upper large-diameter screw part 611 with the middle screw hole section of the stepped through hole 310, the outer wall surface of the middle connecting sleeve part 612 and the inner side wall of the bottom small-diameter hole section of the stepped through hole 310 have a distance of 2 μm to 3 μm therebetween, are basically attached, and during the installation, the operation is performed by coating lubricating oil, and the precision is quite high.
Further, the outer diameter of the heat-conducting protective sleeve 61 below the stepped sleeve portion is smaller than the outer diameter of the bottom connecting sleeve portion 613, a downwardly extending connecting sleeve portion 62 is formed at the bottom end of the heat-conducting protective sleeve 61, the connecting sleeve portion 62 is clamped in a central through hole formed in the middle of the bottom surface of the partition cylinder 80, and the outer side wall of the connecting sleeve portion 62 is pressed against the inner side wall of the central through hole.
Further, the outer diameter of the connecting sleeve part 62 is smaller than the outer diameter of the bottom of the heat-conducting protective sleeve 61;
a bottom plate connecting sleeve part 81 extending upwards is formed in the middle of the bottom plate of the separation cylinder 80, a central through hole is formed in the middle of the bottom plate connecting sleeve part 81, the bottom end of the central through hole extends out of the bottom surface of the bottom plate of the separation cylinder 80, and the edge part of the bottom end of the heat-conducting protective sleeve 61 is pressed against the top surface of the bottom plate connecting sleeve part 81.
Further, at least three annular grooves are formed on the outer side wall of the connecting sleeve portion 62, the bottom sealing ring 63 is nested in the corresponding annular groove, and the outer side wall of the bottom sealing ring 63 is pressed against the inner side wall of the central through hole of the bottom plate connecting sleeve portion 81.
Further, a plurality of arc-shaped through grooves 311 are formed in the bottom surface of the middle groove 31, all the arc-shaped through grooves 311 are uniformly distributed on the bottom surface of the middle groove 31 by taking the central axis of the top liquid-cooling supporting block 30 as the center, and the arc-shaped through grooves 311 are communicated with the partition cylinder 80.
Further, a side liquid inlet hole 312 and a side liquid outlet hole 313 are respectively formed on the left side wall and the right side wall of the middle groove 31, an arc-shaped liquid inlet through hole 314 is formed in the bottom surface of the outer end of the side liquid inlet hole 312, and a vertical liquid outlet through hole 315 is formed in the bottom surface of the outer end of the side liquid outlet hole 313.
Further, a horizontal radial extending edge 82 is formed on the outer side wall of the top of the separation cylinder 80, an annular positioning groove 701 is formed on the inner side wall of the bottom surface of the lower annular block 700, the horizontal radial extending edge 82 is inserted and sleeved in the annular positioning groove 701, the top surface of the horizontal radial extending edge 82 is pressed against the top surface of the annular positioning groove 701, a sealing ring is clamped between the top surface of the horizontal radial extending edge 82 and the top surface of the annular positioning groove 701, and the sealing ring is nested in an annular sealing groove formed on the top surface of the horizontal radial extending edge 82; a plurality of reinforcing parts 83 protruding downwards are formed on the bottom surface of the horizontal radial extending edge 82, a connecting central through hole is formed in the middle of each reinforcing part 83, and the connecting central through hole is vertically aligned with and corresponds to the connecting threaded hole formed in the top surface of the annular positioning groove 701. The screw rod part of the connecting bolt is inserted in the connecting center through hole and is in threaded connection with the connecting threaded hole, the horizontal radial extending edge 82 is pressed against and fixed with the lower annular block 700, the reinforcing part 83 of the connecting bolt increases the connecting strength of the separating cylinder 80 during connection, and the connecting effect is ensured.
Further, an outer annular groove 33 is formed in the edge portion of the bottom surface of the top liquid cooling support block 30, an upper annular protruding ring 702 is formed in the edge portion of the top surface of the lower annular block 700, the upper annular protruding ring 702 is inserted into the outer annular groove 33, the bottom surface of the top liquid cooling support block 30 is pressed against the top surface of the lower annular block 700, a first seal ring is nested in the annular seal groove in the bottom surface of the top liquid cooling support block 30, and the bottom surface of the first seal ring is pressed against the top surface of the lower annular block 700.
In this embodiment, the outer wall surface of the middle connecting sleeve portion 612 of the stepped sleeve portion is tightly attached to the inner side wall of the bottom small-diameter hole section of the stepped through hole 310, so as to achieve positioning, ensure that the stepped through hole 310 of the heat-conducting protective sleeve 61 and the top liquid-cooled supporting block 30 are substantially concentric, meet design requirements, ensure that a main shaft installed in the subsequent heat-conducting protective sleeve 61 is also substantially concentric with the stepped through hole 310, ensure that the bottom end of the main shaft and a bearing connected with the housing normally operate, and cannot be clamped, and ensure the normal operation of the whole device.
When the cooling device is used, cooling liquid enters through the liquid inlet through hole 314, then enters the middle groove 31 through the side liquid inlet hole 312, enters the separation cylinder 80, exchanges heat with the heat conduction protective sleeve 61 and other components, enters the vertical liquid outlet through hole 315 through the side liquid outlet hole 312, and finally flows out of a pipeline of an external cooling circulation system, so that circulating cooling is realized, and the external cooling circulation system is a common structure and is not described in detail herein.
The above embodiments are only used for illustrating the present invention, and not for limiting the present invention, and those skilled in the relevant technical field can make various changes and modifications without departing from the spirit and scope of the present invention, so that all equivalent technical solutions also belong to the scope of the present invention, and the protection scope of the present invention should be defined by the claims.
Claims (8)
1. A liquid air cooling separation device for a high-speed motor comprises a top liquid cooling supporting block (30), wherein a lower annular block (700) is fixed on the bottom surface of the top liquid cooling supporting block (30), and a separation cylinder (80) is fixed on the bottom surface of the lower annular block (700); the top surface middle part shaping of top liquid cooling supporting shoe (30) has middle part recess (31) of downwardly extending, and the bottom surface middle part shaping of top liquid cooling supporting shoe (30) has protruding connecting portion (32) of downwardly extending, and the bottom surface middle part shaping of middle part recess (31) has ladder through-hole (310) of downwardly extending, and the bottom surface middle part of protruding connecting portion (32) is stretched out to the bottom of ladder through-hole (310), its characterized in that: ladder through-hole (310) is including upper portion major diameter hole section, middle part spiro union hole section and bottom minor diameter hole section, heat conduction protective sleeve (61) plug bush is in ladder through-hole (310), the upper portion of heat conduction protective sleeve (61) is notch cuttype sleeve portion, notch cuttype sleeve portion includes upper portion major diameter spiro union portion (611) that the external diameter from top to bottom reduces gradually, middle part connecting sleeve portion (612) and bottom connecting sleeve portion (613), middle part spiro union portion (611) and ladder through-hole (310)'s middle part spiro union hole section spiro union, the outer wall of middle part connecting sleeve portion (612) is hugged closely with the inside wall of the bottom minor diameter hole section of ladder through-hole (310).
2. The liquid air-cooled separating device for the high-speed motor according to claim 1, wherein: the outer diameter of the heat-conducting protective sleeve (61) below the stepped sleeve portion is smaller than that of the bottom connecting sleeve portion (613), a connecting sleeve portion (62) extending downwards is formed at the bottom end of the heat-conducting protective sleeve (61), the connecting sleeve portion (62) is clamped in a central through hole formed in the middle of the bottom surface of the separating cylinder (80), and the outer side wall of the connecting sleeve portion (62) is pressed against the inner side wall of the central through hole.
3. The liquid air-cooled separating device for the high-speed motor according to claim 2, wherein: the outer diameter of the connecting sleeve body part (62) is smaller than the outer diameter of the bottom of the heat-conducting protective sleeve (61);
a bottom plate connecting sleeve portion (81) extending upwards is formed in the middle of the bottom plate of the separating cylinder (80), a central through hole is formed in the middle of the bottom plate connecting sleeve portion (81), the bottom end of the central through hole extends out of the bottom surface of the bottom plate of the separating cylinder (80), and the edge of the bottom end of the heat-conducting protective sleeve (61) is pressed against the top surface of the bottom plate connecting sleeve portion (81).
4. The liquid air-cooled separating device for the high-speed motor according to claim 3, wherein: at least three annular grooves are formed in the outer side wall of the connecting sleeve portion (62), the bottom sealing ring (63) is nested in the corresponding annular groove, and the outer side wall of the bottom sealing ring (63) is pressed against the inner side wall of the central through hole of the bottom plate connecting sleeve portion (81).
5. The liquid air-cooled separating device for the high-speed motor according to claim 1, wherein: a plurality of arc through grooves (311) are formed in the bottom surface of the middle groove (31), all the arc through grooves (311) are uniformly distributed on the bottom surface of the middle groove (31) by taking the central axis of the top liquid cooling supporting block (30) as the center, and the arc through grooves (311) are communicated with the separation barrel (80).
6. The liquid air-cooled separating device for the high-speed motor according to claim 1, wherein: a side liquid inlet hole (312) and a side liquid outlet hole (313) are formed in the left side wall and the right side wall of the middle groove (31) respectively, an arc-shaped liquid inlet through hole (314) is formed in the bottom surface of the outer end of the side liquid inlet hole (312), and a vertical liquid outlet through hole (315) is formed in the bottom surface of the outer end of the side liquid outlet hole (313).
7. The liquid air-cooled separating device for the high-speed motor according to claim 1, wherein: a horizontal radial extension edge (82) is formed on the outer side wall of the top of the separation barrel (80), an annular positioning groove (701) is formed on the inner side wall of the bottom surface of the lower annular block (700), the horizontal radial extension edge (82) is inserted and sleeved in the annular positioning groove (701), the top surface of the horizontal radial extension edge (82) is pressed against the top surface of the annular positioning groove (701), a sealing ring is clamped between the top surface of the horizontal radial extension edge (82) and the top surface of the annular positioning groove (701), and the sealing ring is nested in an annular sealing groove formed on the top surface of the horizontal radial extension edge (82); a plurality of reinforcing parts (83) protruding downwards are formed on the bottom surface of the horizontal radial extending edge (82), a connecting central through hole is formed in the middle of each reinforcing part (83), and the connecting central through hole is vertically aligned with and corresponds to a connecting threaded hole formed in the top surface of the annular positioning groove (701).
8. The liquid air-cooled separating device for the high-speed motor according to claim 1, wherein: the bottom surface edge of top liquid cooling supporting shoe (30) shaping has outer annular groove (33), the top surface edge shaping of lower annular block (700) has upper annular protruding ring (702), upper annular protruding ring (702) plug bush is in outer annular groove (33), the bottom surface of top liquid cooling supporting shoe (30) is pressed down on the top surface of annular block (700), the nested first sealing washer that has been put in the annular seal recess of the bottom surface of top liquid cooling supporting shoe (30), the bottom surface of first sealing washer is pressed down on the top surface of annular block (700).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221076724.0U CN217307465U (en) | 2022-05-07 | 2022-05-07 | Liquid air cooling separation device for high-speed motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221076724.0U CN217307465U (en) | 2022-05-07 | 2022-05-07 | Liquid air cooling separation device for high-speed motor |
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| Publication Number | Publication Date |
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| CN217307465U true CN217307465U (en) | 2022-08-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221076724.0U Active CN217307465U (en) | 2022-05-07 | 2022-05-07 | Liquid air cooling separation device for high-speed motor |
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| CN (1) | CN217307465U (en) |
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- 2022-05-07 CN CN202221076724.0U patent/CN217307465U/en active Active
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