A high-speed motor for a compression expansion integrated machine

Abstract

The application relates to a high-speed motor for a compression-expansion integrated machine applied to the technical field of motors, which can simultaneously set bearing water cooling channels at two ends of the motor, can be connected in series, and can make the cooling liquid cyclically flow at the two ends with extremely low temperature and extremely high temperature, so that the cooling liquid realizes internal circulation, on one hand, the temperature difference between the two sides can be balanced, and the adverse effects caused by the extremity of the motor working condition can be reduced, and on the other hand, compared with the prior art, the cooling fluid heat dissipation is completely of the external circulation type, the cooling liquid is cooled by using the cold energy of the motor, the cost investment for refrigeration of the cooling liquid on the side with extremely high temperature can be effectively reduced, and in addition, the movable half partition can disturb the self-circulating cooling medium, accelerate heat exchange, and directly transport the heat and cold energy of the two sides to the other side, so that the cooling effect is better.

Description

Technical Field

[0001] The present invention relates to a high-speed motor for a compression-expansion integrated machine, and particularly to a high-speed motor for a compression-expansion integrated machine applied in the field of motor-related technology. Background Technology

[0002] The integrated compressor-expander unit combines the compressor and expander onto a single rotor, eliminating the need for couplings, gearboxes, and other transmission mechanisms. This simplifies the main unit configuration and improves transmission efficiency. Furthermore, since the rotating parts are integrated within the same main unit housing, there is only a static seal, eliminating dynamic seals and enhancing the overall sealing reliability. Compared to traditional centrifugal compressors or turbine expanders, it offers significant advantages in terms of increased power density and operational reliability.

[0003] Because the compressor and expander are integrated on the same rotor, the operating conditions at both ends of the motor rotor are extremely cold at one end and extremely hot at the other, resulting in extremely uneven heat distribution at both ends of the motor, which can easily affect the service life of the motor. The specification of Chinese Patent No. CN119393196A discloses a compressor-expander integrated machine, which designs a sandwich layer on the outside of the motor section housing 12, and introduces cooling fluid into the sandwich layer to cool the motor section housing and the motor stator. However, this cooling fluid requires additional refrigeration costs, resulting in high cooling costs.

[0004] The specification of Chinese patent CN118148943A discloses a compression-expansion integrated machine and its control method. It introduces a portion of the expanded refrigerant into a third sub-cavity to cool the drive components, thereby eliminating the need for an additional motor cooling device, simplifying the mechanical structure, and reducing the space occupied by the compression-expansion integrated machine. However, this method requires the use of a portion of the refrigerant, which may result in a loss of the expected cooling capacity and an increase in the amount of refrigerant used, leading to higher cooling costs. Summary of the Invention

[0005] The technical problem that this invention aims to solve in view of the above-mentioned prior art is that the existing methods for balancing the temperature at both ends of a motor are costly.

[0006] To address the aforementioned problems, this invention provides a high-speed motor for a compression-expansion integrated machine, comprising a central shaft, a stator fixedly connected to the central shaft, and a double-layered outer shell fixedly fitted outside the stator. A controller is installed outside the double-layered outer shell. The double-layered outer shell includes an outer casing and an outer cover fixedly fitted at the middle of the outer end of the outer casing. Hot end caps and cold end caps are respectively fixedly connected to both ends of the double-layered outer shell by bolts, and both are movably fitted outside the central shaft by bearings. Pressure caps are bolted to the outer ends of both the hot end caps and the cold end caps, and the pressure caps are also movably fitted outside the central shaft.

[0007] A circulation cavity is carved out in the middle of the outer shell, and a wall-mounted circulation channel is set inside the circulation cavity. Bearing cooling channels are carved out in both the hot and cold end caps, and both bearing cooling channels communicate with the wall-mounted circulation channel. The wall-mounted circulation channel includes a full partition bar fixedly connected between the left and right inner walls of the circulation cavity, and two sets of half partition bars respectively set on the inner wall of the circulation cavity. Adjacent half partition bars are staggered. A connecting seat is fixedly connected to the outer end of the outer shell, and an inlet pipe and a drain pipe are fixedly connected to the outer end of the connecting seat. The full partition bar is located between the inlet pipe and the drain pipe. The left side of the circulation cavity... The wall is respectively carved with a hot inlet and a hot outlet, and the right side of the circulation chamber is respectively carved with a cold inlet and a cold outlet. The cold inlet and hot inlet, and the cold outlet and hot outlet are respectively located on both sides of the whole partition. The bearing cooling channel includes a hollow heat dissipation ring located inside the inner ring of the hot end cover, a water inlet channel and a water outlet channel respectively carved inside the hot end cover. The hollow heat dissipation ring is sleeved on the outside of the bearing. The water inlet channel and the water outlet channel are respectively connected to the cold inlet and the cold outlet. The water inlet channel and the water outlet channel of another bearing cooling channel are respectively connected to the hot inlet and the hot outlet.

[0008] Both the inlet and outlet pipes are fixedly connected to the medium source via long liquid guide pipes. A filter is also connected between the inlet and outlet pipes via a pipe. Solenoid valves and miniature water pumps are installed in the pipes and the long liquid guide pipes. Temperature sensors are installed at the cold inlet, cold outlet, hot inlet, hot outlet, and outlet pipes. The temperature sensors, solenoid valves, and miniature water pumps are all connected to the controller signal.

[0009] In the high-speed motor used in the aforementioned compression-expansion integrated machine, bearing water-cooling channels can be set at both ends of the motor, and the two can be connected in series, so that the coolant can circulate at both the extremely cold and extremely hot ends, achieving internal circulation of the coolant. On the one hand, this can balance the temperature difference between the two sides and reduce the adverse effects caused by the extreme operating conditions of the motor. On the other hand, compared with the prior art, which completely adopts external circulation cooling fluid heat dissipation, this application uses its own cooling capacity to restore the coolant temperature, which can effectively reduce the cost of cooling the coolant on the extremely hot side.

[0010] As a further improvement of this application, the hot end cap and the cold end cap are also provided with feeding holes that extend to the bearing.

[0011] As a further improvement of this application, the central shaft is a hollow structure, and a shaft hole is drilled at the outer end of the central shaft near the hot end cover. Multiple evenly distributed air guide tubes are fixedly embedded on the hollow heat dissipation ring, and multiple evenly distributed air dissipation holes are drilled at the outer end of the outer shell near the hot end cover. The shaft hole, multiple air guide tubes and multiple air dissipation holes are interconnected.

[0012] As a further improvement of this application, a reversing filter unit is installed inside the filter via an electric rotating shaft. The reversing filter unit includes a partition coaxial with the filter, a semi-cylindrical tube fixedly connected to the outer end of the partition, and a filter element installed inside the semi-cylindrical tube.

[0013] As a further improvement of this application, the connection between the pipe and the filter is not coaxial with the filter, and the diameter of the pipe opening is smaller than the radius of the semi-cylindrical pipe.

[0014] As another improvement of this application, an outer magnetic ring is slidably mounted on the outer shell via an electric slide rail. The lateral sliding stroke of the outer magnetic ring is located inside the outer shell, and the length of the overlapping of two adjacent half-spacers is not less than 1 / 2 of the length of the half-spacer.

[0015] As a further improvement to this application, the outer magnetic ring is made of electromagnetic material, the half-spacer is slidably connected to the outer wall of the circulating cavity cylinder, and the half-spacer is made of magnetic material, with the radially outward end faces of the two sets of half-spacers having opposite magnetic poles.

[0016] As another improvement of this application, the outer magnetic ring is made of magnetic material, and the two sets of semi-spacers are fixedly connected to the left and right inner walls of the circulation cavity respectively. The semi-spacers are hollow structures, and a heat transfer core that fits against the inner wall is placed inside the hollow semi-spacers. The semi-spacers are also saturated with heat transfer oil.

[0017] As a further improvement to this application, the end faces where the heat-conducting core and the half-spacer are in contact are all chiseled with oil grooves, and the length of the heat-conducting core is no more than 1 / 3 of the length of the half-spacer.

[0018] In summary, bearing water-cooling channels can be installed at both ends of the motor simultaneously, and the two channels can be connected in series, allowing the coolant to circulate between the extremely cold and extremely hot ends. This internal circulation of the coolant balances the temperature difference between the two sides, reducing the adverse effects of the extreme operating conditions of the motor. Furthermore, compared to existing technologies that rely entirely on external circulation for cooling, this application utilizes its own cooling capacity to restore the coolant's temperature, effectively reducing the cost of cooling the extremely hot side. Additionally, the movable design allows for disturbance of the self-circulating cooling medium, accelerating heat exchange, and also enables direct transfer of heat and cold from one side to the other, resulting in better cooling performance. Moreover, the hollow structure of the central shaft allows air to be introduced from the extremely cold side, carrying the cooling capacity through the central shaft and diffusing from the inside to the outside of the housing, further balancing the temperature difference. Attached Figure Description

[0019] Figure 1 This is an exploded view of the first embodiment of this application;

[0020] Figure 2 This is a perspective view of the first embodiment of this application;

[0021] Figure 3 This is a perspective view of one side of the first embodiment of this application after the outer casing has been removed;

[0022] Figure 4 This is a perspective view of the other side after the outer casing has been removed, according to the first embodiment of this application.

[0023] Figure 5 This is a perspective view of the cold end cap according to the first embodiment of this application;

[0024] Figure 6 This is a partial formal drawing of the cold end cap according to the first embodiment of this application;

[0025] Figure 7 This is a perspective view of the central shaft according to the first embodiment of this application;

[0026] Figure 8 This is a schematic diagram of the water cooling principle of the first embodiment of this application;

[0027] Figure 9 This is a schematic cross-sectional view of the filter in the inner circulation path in the first embodiment of this application;

[0028] Figure 10 This is a schematic diagram of the radial cross-section of the filter in the inner circulation path in the first embodiment of this application;

[0029] Figure 11 This is a radial cross-sectional view of the filter in the internal circulation path filtering the coolant in the first embodiment of this application.

[0030] Figure 12 This is a perspective view of the second embodiment of this application;

[0031] Figure 13 A schematic diagram of the wall-mounted circulation channel in the second embodiment of this application when it is reversing direction;

[0032] Figure 14 This is a cross-sectional schematic diagram of the semi-spacer bar according to the third embodiment of this application;

[0033] Figure 15 This is a perspective view of the heat-conducting core in the third embodiment of this application as the semi-spacer moves.

[0034] Explanation of the labels in the diagram:

[0035] 11 Outer casing, 12 Outer sheath, 131 Hot end cap, 132 Cold end cap, 14 Pressure cap, 15 Central shaft, 101 Circulation chamber, 102 Full partition bar, 103 Half partition bar, 21 Water inlet pipe, 22 Drain pipe, 201 Cold inlet, 202 Cold outlet, 203 Hot inlet, 204 Hot outlet, 301 Shaft hole, 302 Air guide pipe, 303 Ventilation hole, 31 Water inlet channel, 32 Hollow heat dissipation ring, 33 Drain channel, 4 Filter, 41 Semi-cylindrical tube, 42 Partition plate, 43 Filter element, 5 Outer magnetic ring, 6 Heat transfer core, 601 Oil groove. Detailed Implementation

[0036] The three embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0037] First implementation method:

[0038] Figure 1-2 The diagram shows a high-speed motor for a compression-expansion integrated machine, comprising a central shaft 15, a stator fixedly connected to the central shaft 15, and a double-layered outer shell fixedly sleeved on the stator. A controller is installed on the double-layered outer shell. The double-layered outer shell includes an outer casing 12 and an outer cover 11 fixedly sleeved on the middle of the outer end of the outer casing 12. The two ends of the double-layered outer shell are respectively fixedly connected to a hot end cover 131 and a cold end cover 132 by bolts, and both are movably sleeved on the central shaft 15 by bearings. The outer ends of the hot end cover 131 and the cold end cover 132 are both connected to a pressure cover 14 by bolts, and the pressure cover 14 is also movably sleeved on the central shaft 15.

[0039] like Figure 3-4 The outer casing 12 has a circulation cavity 101 cut out in the middle. A wall-mounted circulation channel is provided inside the circulation cavity 101. Bearing cooling channels are cut out in both the hot end cap 131 and the cold end cap 132. The cold end cap 132 is on the expansion end, so its operating condition is extremely cold; the hot end cap 131 is on the compression end, so its operating condition is extremely hot. Both bearing cooling channels communicate with the wall-mounted circulation channel. The wall-mounted circulation channel includes a solid partition 102 fixedly connected between the left and right inner walls of the circulation cavity 101 and two sets of semi-partitions 103 respectively disposed on the inner wall of the circulation cavity 101. Adjacent semi-partitions 103 are staggered, so that the circulation cavity 101 serves as the... The cooling medium can circulate within the channels formed by multiple staggered semi-segments 103, and achieve overall self-circulation through the bearing cooling channels on both sides. A connecting seat is fixedly connected to the outer end of the outer casing 11, and an inlet pipe 21 and a drain pipe 22 are fixedly connected to the outer end of the connecting seat. The entire partition 102 is located between the inlet pipe 21 and the drain pipe 22. A hot inlet 203 and a hot outlet 204 are respectively carved into the inner wall of the left side of the circulation chamber 101, and a cold inlet 201 and a cold outlet 202 are respectively carved into the inner wall of the right side of the circulation chamber 101. The cold inlet 201 and hot inlet 203, and the cold outlet 202 and hot outlet 204 are respectively located on both sides of the entire partition 102. Figure 5-6The two bearing cooling channels have the same structure. Taking the bearing cooling channel on the hottest side as an example: the bearing cooling channel includes a hollow heat dissipation ring 32 located inside the inner ring of the hot end cover 131, a water inlet channel 31 and a drain channel 33 respectively cut inside the hot end cover 131. The hollow heat dissipation ring 32 is sleeved on the outside of the bearing. The water inlet channel 31 and the drain channel 33 are respectively connected to the cold inlet 201 and the cold outlet 202. The water inlet channel 31 and the drain channel 33 of the other bearing cooling channel are respectively connected to the hot inlet 203 and the hot outlet 204.

[0040] When the miniature air pump on the pipeline operates, the cooling medium flowing out of the wall-mounted circulation channel flows out along the drain pipe 22, passes through the pipeline and filter 4 to reach the inlet pipe 21, and flows into the wall-mounted circulation channel from the inlet pipe 21. At this time, some of the hotter cooling medium enters the bearing cooling channels on both sides along the cold inlet 201 and the hot inlet 203 respectively, and flows through the inlet channel 31, the hollow heat dissipation ring 32 and the drain channel 33 in sequence in the two bearing cooling channels. Then, the cooling medium absorbs cold and heat on the extremely cold and extremely hot sides. The medium flows back into the wall-mounted circulation channel through the cold outlet 202 and the hot outlet 204, and then flows and mixes in the channel formed by multiple intersecting half-bars 103. Finally, it flows back to the other side of the full bar 102, and part of it flows out along the drain pipe 22 and then flows back into the wall-mounted circulation channel through the water inlet pipe 21, and repeats the above cycle to achieve internal circulation of the cooling medium. This achieves the effect of using the cold energy on the extremely cold side to cool the extremely hot side. Compared with the existing technology, which relies entirely on additional cooling equipment for auxiliary cooling, this method significantly reduces the cost.

[0041] like Figure 9-10 The filter 4 has a reversing filter unit installed inside via an electric rotating shaft. The reversing filter unit includes a partition 42 coaxial with the filter 4, a semi-cylindrical tube 41 fixedly connected to the outer end of the partition 42, and a filter element 43 installed inside the semi-cylindrical tube 41. The connection between the pipe and the filter 4 is not coaxial with the filter 4, and the diameter of the pipe opening is smaller than the radius of the semi-cylindrical tube 41. During the circulation of the coolant, the semi-cylindrical tube 41 can be controlled to be misaligned with the pipe opening, allowing the coolant to flow directly. At regular intervals, such as... Figure 11 The semi-cylindrical tube 41 can be controlled to overlap with the pipe opening, so that during the internal circulation process, the cooling medium will be filtered by the filter element 43, thereby effectively removing impurities and oxides generated by the coolant due to long-term use, effectively reducing the impurity content of the coolant, maintaining good heat exchange performance, and ensuring the cooling effect.

[0042] like Figure 8Both the inlet pipe 21 and the outlet pipe 22 are fixedly connected to the medium source via long liquid guide pipes. A filter 4 is also connected between the inlet pipe 21 and the outlet pipe 22 via a pipe. Solenoid valves and miniature water pumps are installed in the pipes and the long liquid guide pipes. Temperature sensors are installed at the cold inlet 201, cold outlet 202, hot inlet 203, hot outlet 204, and outlet pipe 22. The temperature sensors, solenoid valves, and miniature water pumps are all connected to the controller signal. During use, the temperature at each location can be monitored using multiple temperature sensors. The temperature sensor at outlet pipe 22 is mainly used to monitor the temperature of the coolant after it has passed through both extremely cold and extremely hot sides. When the temperature of this sensor continuously rises, it indicates that the cooling medium is circulating. If the heat dissipation is insufficient to meet the motor's cooling requirements, the solenoid valve on the pipeline can be closed, while the solenoid valves on the two long liquid guide pipes can be opened. At the same time, the miniature air pumps on them can be pneumatically activated. The cooling medium from the medium source can then be introduced into the wall-mounted circulation channel, completing an external circulation between the wall-mounted circulation channel and the medium source. The flow rate can be increased as needed to improve the coolant circulation volume per unit time, thus achieving an auxiliary cooling effect. This provides some adjustment and compensation when the internal circulation is insufficient. When the data from the temperature sensor at drain pipe 22 is lower than the preset value and tends to stabilize, the external circulation can be closed and the internal circulation switched back to fully utilize its own cooling capacity, while significantly reducing the need for additional auxiliary cooling and lowering costs.

[0043] The hot end cover 131 and the cold end cover 132 are also provided with feeding holes that extend to the bearing. Lubricating oil can be added to the bearing at regular intervals through the feeding holes so that the bearing can maintain stable operation.

[0044] like Figure 7 The central shaft 15 is a hollow structure, and a shaft hole 301 is drilled at the outer end of the central shaft 15 near the hot end cover 131. Multiple evenly distributed air guide pipes 302 are fixedly embedded on the hollow heat dissipation ring 32. Multiple evenly distributed air dissipation holes 303 are drilled at the outer end of the outer shell 12 near the hot end cover 131. The shaft hole 301, multiple air guide pipes 302 and multiple air dissipation holes 303 are interconnected, allowing air to be introduced from the extremely cold side, so that it carries the cold energy through the central shaft 15 and spreads and diffuses outward along the shaft hole 301, multiple air guide pipes 302 and multiple air dissipation holes 303 in the shell, thus achieving the effect of improving heat dissipation and further balancing the temperature difference.

[0045] In the high-speed motor used in the aforementioned compression-expansion integrated machine, bearing water-cooling channels can be set at both ends of the motor, and the two can be connected in series, so that the coolant can circulate at both the extremely cold and extremely hot ends, achieving internal circulation of the coolant. On the one hand, this can balance the temperature difference between the two sides and reduce the adverse effects caused by the extreme operating conditions of the motor. On the other hand, compared with the prior art, which completely adopts external circulation cooling fluid heat dissipation, this application uses its own cooling capacity to restore the coolant temperature, which can effectively reduce the cost of cooling the coolant on the extremely hot side.

[0046] Second implementation method:

[0047] This embodiment improves upon the first embodiment by modifying the semi-partition 103, a key component in forming the wall-mounted circulation channel, while the rest remains consistent with the first embodiment.

[0048] Figure 12 As shown, an outer magnetic ring 5 is slidably mounted on the outer casing 12 via an electric slide rail. The lateral sliding stroke of the outer magnetic ring 5 is located within the outer casing 12. The overlapping length of two adjacent half-spacers 103 is not less than 1 / 2 of the length of the half-spacer 103. The outer magnetic ring 5 is made of an electromagnetic material. The half-spacers 103 are slidably connected to the outer wall of the cylindrical surface of the circulation cavity 101, and the half-spacers 103 are made of a magnetic material, such as an AlNiCo magnet, which can operate at temperatures up to 650 degrees Celsius. When selecting materials, a suitable magnetic material can be chosen based on the highest temperature of the actual operating conditions to adapt to the special operating conditions of the expansion integrated compressor. The radially outward magnetic poles of the two sets of half-spacers 103 are opposite. Figure 13 The outer magnetic ring 5 can be moved back and forth outside the outer casing 12 by an electric slide rail, and the outer magnetic ring 5 can be energized. The current flowing through the outer magnetic ring 5 in the two directions is opposite, so that it can generate two different magnetic forces. In one direction, it can generate a magnetic attraction force on one set of half-spacers 103, thereby causing the set of half-spacers 103 to move. The other set is magnetically repelled and does not move. When the outer magnetic ring 5 moves in the opposite direction, it will drive the other set of half-spacers 103 to move. On the one hand, multiple movable half-spacers 103 continuously reorganize the wall-mounted circulation channel, which can significantly disturb the circulating cooling medium, making its mixing effect better, facilitating the temperature at both ends to be more consistent, and reducing the temperature difference. On the other hand, when the half-spacers 103 move, they can directly carry cold or heat to the other side, thereby further accelerating the heat diffusion and distribution, effectively alleviating the extreme hot and cold trend at both ends, and reducing the temperature difference.

[0049] The third implementation method:

[0050] This embodiment is based on the second embodiment, but changes the setting of the half spacer 103 and the outer magnetic ring 5, while the rest remains the same as the second embodiment.

[0051] In this embodiment, the outer magnetic ring 5 is made of magnetic material, such as an AlNiCo magnet, and the two sets of half spacers 103 are fixedly connected to the left and right inner walls of the circulation cavity 101, that is, the half spacers 103 themselves are in a fixed state.

[0052] Figure 14 As shown, the half-spacer 103 has a hollow structure. Inside the hollow half-spacer 103, a heat transfer core 6 is placed that is in contact with its inner wall. The half-spacer 103 is also saturated with heat transfer oil. In use, when the outer magnetic ring 5 moves back and forth, it can directly attract the heat transfer core 6 inside the half-spacer 103, causing it to move back and forth. When the heat transfer core 6 reaches its limit position, it stops and does not move with the outer magnetic ring 5. When the outer magnetic ring 5 folds back, it returns with the outer magnetic ring 5. Thus, the transfer of cold and heat can be achieved in the same way.

[0053] The end faces of the heat transfer core 6 and the semi-spacer 103 that are in contact with each other are chiseled with oil grooves 601. When the heat transfer core 6 moves back and forth, it can agitate the heat transfer oil and make the heat transfer oil move back and forth along the oil grooves 601. It can also improve the uniformity of temperature distribution near the semi-spacer 103. The length of the heat transfer core 6 is no more than 1 / 3 of the length of the semi-spacer 103, which effectively ensures that the heat transfer core 6 has enough space for the back and forth transfer of heat or cold.

[0054] Among them, the heat transfer core 6 and the semi-spacer 103 are both made of high thermal conductivity materials.

[0055] Although the range of heat transfer in this embodiment is smaller than that in the second embodiment, the position of the half-spacer 103 is fixed, the range of influence of the moving parts is smaller, and thus the stability is higher. In specific implementation, a setting method can be selected according to actual needs.

[0056] In light of current practical needs, the above-described embodiments adopted in this application are not limited to these. Any changes made within the scope of knowledge possessed by those skilled in the art without departing from the concept of this application still fall within the protection scope of this invention.

Claims

1. A high-speed motor for a compression-expansion integrated machine, characterized in that: The device includes a central shaft (15), a stator fixedly connected to the central shaft (15), and a double-layered outer shell fixedly fitted outside the stator. A controller is installed on the double-layered outer shell. The double-layered outer shell includes an outer shell (12) and an outer cover (11) fixedly fitted on the middle of the outer end of the outer shell (12). The two ends of the double-layered outer shell are respectively fixedly connected to a hot end cap (131) and a cold end cap (132) by bolts, and both are movably fitted outside the central shaft (15) by bearings. The outer ends of the hot end cap (131) and the cold end cap (132) are both connected to a pressure cap (14) by bolts, and the pressure cap (14) is also movably fitted outside the central shaft (15). A circulation chamber (101) is carved in the middle of the outer shell (12). A wall-mounted circulation channel is provided in the circulation chamber (101). Bearing cooling channels are carved in both the hot end cap (131) and the cold end cap (132). Both bearing cooling channels are connected to the wall-mounted circulation channel. The wall-mounted circulation channel includes a solid partition strip (102) fixedly connected between the left and right inner walls of the circulation chamber (101) and two sets of half partition strips (103) respectively set on the inner wall of the circulation chamber (101). The two adjacent half partition strips (103) are staggered. A connecting seat is fixedly connected to the outer end of the outer shell (11). A water inlet pipe (21) and a drain pipe (22) are fixedly connected to the outer end of the connecting seat. The solid partition strip (102) is located between the water inlet pipe (21) and the drain pipe (22). A hot inlet (20) is carved in the left inner wall of the circulation chamber (101). 3) and hot outlet (204), a cold inlet (201) and a cold outlet (202) are respectively carved in the right side of the circulation chamber (101). The cold inlet (201) and hot inlet (203), the cold outlet (202) and the hot outlet (204) are respectively located on both sides of the partition bar (102). The bearing cooling channel includes a hollow heat dissipation ring (32) located inside the inner ring of the hot end cover (131), a water inlet channel (31) and a drain channel (33) respectively carved in the hot end cover (131). The hollow heat dissipation ring (32) is sleeved on the outside of the bearing. The water inlet channel (31) and the drain channel (33) are respectively connected to the cold inlet (201) and the cold outlet (202). The water inlet channel (31) and the drain channel (33) of the other bearing cooling channel are respectively connected to the hot inlet (203) and the hot outlet (204). The outer ends of the water inlet pipe (21) and the drain pipe (22) are fixedly connected to the medium source by a liquid guiding pipe. A filter (4) is also connected between the water inlet pipe (21) and the drain pipe (22) through a pipe. Solenoid valves and micro water pumps are installed in the pipes and the liquid guiding pipes. Temperature sensors are installed at the cold inlet (201), cold outlet (202), hot inlet (203), hot outlet (204) and the drain pipe (22). The temperature sensors, solenoid valves and micro water pumps are all connected to the controller signal.

2. A high-speed motor for a compression-expansion integrated machine according to claim 1, characterized in that: The hot end cap (131) and the cold end cap (132) are also provided with feeding holes, which extend to the bearing.

3. A high-speed motor for a compression-expansion integrated machine according to claim 1, characterized in that: The central shaft (15) is a hollow structure, and a shaft hole (301) is drilled at the outer end of the central shaft (15) near the hot end cover (131). A plurality of evenly distributed air guide pipes (302) are fixedly embedded on the hollow heat dissipation ring (32). A plurality of evenly distributed air dissipation holes (303) are drilled at the outer end of the outer shell (12) near the hot end cover (131). The shaft hole (301), the plurality of air guide pipes (302) and the plurality of air dissipation holes (303) are interconnected.

4. A high-speed motor for a compression-expansion integrated machine according to claim 1, characterized in that: The filter (4) has a reversing filter unit installed inside via an electric rotating shaft. The reversing filter unit includes a partition (42) coaxial with the filter (4), a semi-cylindrical tube (41) fixedly connected to the outer end of the partition (42), and a filter element (43) installed inside the semi-cylindrical tube (41).

5. A high-speed motor for a compression-expansion integrated machine according to claim 4, characterized in that: The connection between the pipe and the filter (4) is not coaxial with the filter (4), and the diameter of the pipe opening is smaller than the radius of the semi-cylindrical pipe (41).

6. A high-speed motor for a compression-expansion integrated machine according to claim 1, characterized in that: An outer magnetic ring (5) is slidably mounted on the outer shell (12) via an electric slide rail. The lateral sliding stroke of the outer magnetic ring (5) is located inside the outer shell (12). The length of the overlapping of two adjacent half-spacers (103) is not less than 1 / 2 of the length of the half-spacer (103).

7. A high-speed motor for a compression-expansion integrated machine according to claim 6, characterized in that: The outer magnetic ring (5) is made of electromagnetic material. The half spacer (103) is slidably connected to the outer wall of the cylindrical surface of the circulation cavity (101). The half spacer (103) is made of magnetic material. The magnetic poles of the radially outward end faces of the two sets of half spacers (103) are opposite.

8. A high-speed motor for a compression-expansion integrated machine according to claim 6, characterized in that: The outer magnetic ring (5) is made of magnetic material. The two sets of semi-spacers (103) are fixedly connected to the left and right inner walls of the circulation cavity (101) respectively. The semi-spacers (103) are hollow structures. The hollow semi-spacers (103) contain heat transfer cores (6) that are in contact with their inner walls. The semi-spacers (103) are also saturated with heat transfer oil.

9. A high-speed motor for a compression-expansion integrated machine according to claim 8, characterized in that: The end face where the heat-conducting core (6) and the half-spacer (103) are attached is chiseled with an oil groove (601), and the length of the heat-conducting core (6) is no more than 1 / 3 of the length of the half-spacer (103).

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