Oil-cooled air compressor motor

Abstract

The utility model discloses an oil-cooled air compressor motor which comprises a shell, a stator is arranged in the shell, and an inner sleeve is further arranged in the shell. The stator is arranged in the inner sleeve; an oil inlet is formed in the shell, the shell is communicated with a first oil duct formed in the inner sleeve through the oil inlet, and the first oil duct is spirally arranged; a protrusion is further arranged on the inner wall of the inner sleeve, and a second oil channel is formed in the protrusion. And the second oil duct is communicated with the first oil duct. According to the utility model, the surface of the stator is cooled through the arranged first oil channel, and the first oil channel is arranged to be spiral, so that the contact time of the first oil channel and the surface of the stator is prolonged, and the cooling effect is provided. The protrusions are arranged in the inner sleeve, the protrusions are embedded into the grooves of the stator, heat dissipation is conducted on the interior of the stator through the second oil channels, and therefore the purpose of improving the cooling effect is achieved, and the heat dissipation effect on the stator is further improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of motors, in particular to an oil-cooled air compressor motor. Background Art

[0002] The development of modern industry has placed higher and higher requirements on motor performance. The problem of motor heat loss restricts the design and development of large-capacity motors. Depending on whether the cooling medium passes through the inside of the motor, the motor cooling method is divided into internal cooling and surface cooling. Due to the limitation of volume, small and medium-sized motors often use surface cooling.

[0003] In the prior art, for example, the technical solution recorded in the utility model patent with publication number: CN217607655U is: a high-speed oil-cooled permanent magnet motor, which provides basic power functions for the permanent magnet motor by setting a mounting frame, a stator winding and a stator core, and sets a first end cover, a second end cover and a guide plate to increase the path distance of the cooling oil in the inner cavity of the mounting frame.

[0004] When cooling the inside of the motor, since the stator coil is the main source of heat, most of the heat generated is concentrated in the stator coil. In the prior art, when cooling the motor, the stator cannot be cooled directly, resulting in poor cooling effect on the motor. Utility Model Content

[0005] The utility model aims to provide an oil-cooled air compressor motor to solve the problem in the prior art proposed in the background technology that when cooling the motor, the stator cannot be directly cooled, resulting in poor cooling effect on the motor.

[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0007] An oil-cooled air compressor motor comprises a shell, a stator is arranged inside the shell, and an inner sleeve is also arranged inside the shell; the inner sleeve is fixedly connected to the shell; the stator is arranged inside the inner sleeve;

[0008] An oil inlet is provided on the outer shell, and the outer shell is connected with a first oil passage provided on the inner sleeve through the oil inlet. The first oil passage is spirally provided, and the first oil passage extends from the right end of the inner sleeve to the left end of the inner sleeve. A protrusion is also provided on the inner wall of the inner sleeve, and a groove matching with the protrusion is provided on the stator, and the protrusion is embedded in the inner part of the groove.

[0009] A second oil passage is arranged inside the protrusion; the second oil passage is communicated with the first oil passage; the second oil passage extends to the right end of the inner sleeve, and the second oil passage runs through the protrusion, and the second oil passage is used to discharge cooling oil.

[0010] According to the above technical solution, the first oil passage and the second oil passage are connected via an oil transfer ring, and the oil transfer ring is arranged at the left end of the inner sleeve.

[0011] According to the above technical solution, a connecting groove and a connecting oil channel are provided on the oil transfer ring; wherein one end of the connecting groove is connected to the first oil channel, the other end of the connecting groove is connected to the connecting oil channel, and the connecting oil channel is connected to the second oil channel.

[0012] According to the above technical solution, a limiting portion is further provided inside the inner sleeve, and the limiting portion is used to limit the installation of the stator.

[0013] According to the above technical solution, end covers are respectively provided at both ends of the shell, and the end covers are used for sealing the shell.

[0014] According to the above technical solution, the end cover includes a front end cover and a rear end cover, and the front end cover and the rear end cover are respectively fixedly connected to the shell.

[0015] According to the above technical solution, a plurality of second oil passages and protrusions are provided, and the plurality of second oil passages and protrusions are evenly arranged along the circumferential direction of the inner sleeve.

[0016] According to the above technical solution, the second oil channel is arranged to be inclined downward.

[0017] According to the above technical solution, an oil storage tank is also provided below the shell, and the oil storage tank is used to collect the discharged cooling oil.

[0018] According to the above technical solution, an oil outlet is also provided at the end of the oil storage tank, and the oil outlet is used to discharge the cooling oil.

[0019] Compared with the prior art, the utility model has the following beneficial effects:

[0020] In the utility model, the surface of the stator is cooled by the first oil passage, and the first oil passage is spirally arranged to increase the contact time between the first oil passage and the surface of the stator, thereby providing a cooling effect.

[0021] By arranging a protrusion inside the inner sleeve and embedding the protrusion into the groove of the stator, the interior of the stator is cooled through the second oil channel, thereby achieving the purpose of improving the cooling effect, thereby further improving the heat dissipation effect on the stator. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the internal structure of the utility model;

[0023] Figure 2 This is a schematic diagram of the inner sleeve structure of the utility model;

[0024] Figure 3 It is a partial enlarged structural schematic diagram of point A of the utility model.

[0025] Markings in the figure: 100 - outer casing, 200 - stator, 300 - inner sleeve, 400 - oil inlet, 500 - first oil channel, 600 - protrusion, 700 - groove, 800 - second oil channel, 900 - oil transfer ring, 110 - connecting groove, 111 - connecting oil channel, 112 - limiting part, 113 - front end cover, 114 - rear end cover, 115 - oil storage tank, 116 - oil outlet. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] Embodiment 1

[0028] like Figure 1 and Figure 2 As shown, an oil-cooled air compressor motor includes a housing 100, a stator 200 is arranged inside the housing 100, and an inner sleeve 300 is also arranged inside the housing 100; the inner sleeve 300 is fixedly connected to the housing 100; the stator 200 is arranged inside the inner sleeve 300;

[0029] like Figure 1 As shown, an oil inlet 400 is provided on the outer shell 100, and the outer shell 100 is connected with a first oil passage 500 provided on the inner sleeve 300 through the oil inlet 400. The first oil passage 500 is spirally arranged, and the first oil passage 500 extends from the right end of the inner sleeve 300 to the left end of the inner sleeve 300; a protrusion 600 is also provided on the inner wall of the inner sleeve 300, and a groove 700 matching with the protrusion 600 is provided on the stator 200, and the protrusion 600 is embedded in the inner part of the groove 700;

[0030] A second oil passage 800 is provided inside the protrusion 600; the second oil passage 800 is communicated with the first oil passage 500; the second oil passage 800 extends to the right end of the inner sleeve 300, and the second oil passage 800 runs through the protrusion 600, and the second oil passage 800 is used to discharge cooling oil.

[0031] In the present invention, the surface of the stator 200 is cooled by providing the first oil passage 500, and the first oil passage 500 is provided in a spiral shape to increase the contact time between the first oil passage 500 and the surface of the stator 200, thereby providing a cooling effect.

[0032] By arranging the protrusion 600 inside the inner sleeve 300 and embedding the protrusion 600 into the groove 700 of the stator 200, the interior of the stator 200 is dissipated through the second oil passage 800, thereby achieving the purpose of improving the cooling effect, thereby further improving the heat dissipation effect of the stator 200.

[0033] Embodiment 2

[0034] This embodiment is a further refinement of the first embodiment.

[0035] like Figure 2 As shown, the first oil passage 500 and the second oil passage 800 are connected via an oil transfer ring 900, which is disposed at the left end of the inner sleeve 300. The oil transfer ring 900 is provided with a connecting groove 110 and a connecting oil passage 111; one end of the connecting groove 110 is connected to the first oil passage 500, and the other end of the connecting groove 110 is connected to the connecting oil passage 111, which is in turn connected to the second oil passage 800.

[0036] Specifically, Figure 3 As shown, the first oil passage 500 and the second oil passage 800 are connected by an oil transfer ring 900. After the cooling oil passes through the oil inlet 400, it swirls inside the first oil passage 500 to fully exchange heat with the surface of the stator 200, thereby cooling the stator 200, and then enters the second oil passage 800 through the oil transfer ring 900.

[0037] After the cooling oil enters the second oil passage 800 , it again enters into heat exchange with the inner surface of the stator 200 , thereby further improving the heat dissipation effect on the stator 200 .

[0038] like Figure 1 As shown, a limiting portion 112 is further provided inside the inner sleeve 300 , and the limiting portion 112 is used to limit the installation of the stator 200 .

[0039] Specifically, after the stator 200 is installed inside the inner sleeve 300 , one end of the stator 200 is in contact with the limiting portion 112 , and the installation of the stator 200 is limited by the limiting portion 112 .

[0040] An oil transfer ring 900 is installed at the other end of the stator 200 . The oil transfer ring 900 is snap-fitted into the interior of the housing 100 and can also limit the stator 200 .

[0041] End covers are respectively provided at both ends of the housing 100, and the end covers are used to seal the housing 100. The end covers include a front end cover 113 and a rear end cover 114, and the front end cover 113 and the rear end cover 114 are respectively fixedly connected to the housing 100.

[0042] Specifically, the front end cover 113 and the rear end cover 114 are respectively provided with bearing mounting seats, and the bearing mounting seats are used to mount bearings.

[0043] Further, such as Figure 1 As shown, a rotor is also arranged inside the housing 100, and the rotor includes a rotating shaft and a rotor winding, and the rotor winding is fixedly arranged on the rotating shaft. One end of the rotating shaft is arranged through the front end cover 113, and the other end of the rotating shaft is arranged through the rear end cover 114. The two ends of the rotating shaft are rotatably connected to the front end cover 113 and the rear end cover 114 respectively.

[0044] A plurality of second oil passages 800 and protrusions 600 are provided, and the plurality of second oil passages 800 and protrusions 600 are evenly arranged along the circumferential direction of the inner sleeve 300. The second oil passages 800 are arranged to be inclined downward.

[0045] Specifically, the second oil passage 800 and the protrusion 600 are evenly arranged inside the inner sleeve 300. By evenly arranging the second oil passage 800 and the protrusion 600, the protrusion 600 is arranged in the groove 700 of the inner sleeve 300, and the second oil passage 800 is arranged inside the protrusion 600, so that the cooling oil is discharged from one end of the stator 200 to the other end of the stator 200, and the heat dissipation of the inner surface of the stator 200 is completed.

[0046] The cooling oil that has completed the heat exchange is discharged from the other end of the second oil channel 800 , and the discharged cooling oil enters the interior of the housing 100 . The housing 100 is connected to the oil storage tank 115 , and the cooling oil enters the interior of the oil storage tank 115 .

[0047] Preferably, eight second oil passages 800 and eight protrusions 600 are provided.

[0048] An oil storage tank 115 is also provided below the housing 100 for collecting the discharged cooling oil. An oil outlet 116 is also provided at the end of the oil storage tank 115 for discharging the cooling oil.

[0049] Specifically, the oil storage tank 115 is used to collect the cooling oil that has been cooled, and to recover the cooling oil that has been cooled through the oil outlet 116 .

[0050] The working principle of the utility model is as follows: when in use, cooling oil is input into the interior of the first oil passage 500 through the oil inlet 400; after the cooling oil passes through the oil inlet 400, it swirls inside the first oil passage 500, performs sufficient heat exchange with the surface of the stator 200, thereby cooling the stator 200; and then enters the interior of the second oil passage 800 through the oil rotating ring 900; after the cooling oil enters the interior of the second oil passage 800, it performs heat exchange with the inner surface of the stator 200 again, further improving the heat dissipation effect on the stator 200; and the cooling oil after cooling is discharged from the end of the second oil passage 800.

[0051] The cooling oil that has completed the heat exchange is discharged from the other end of the second oil channel 800, and the discharged cooling oil enters the interior of the housing 100. The housing 100 is connected to the oil storage tank 115, and the cooling oil enters the interior of the oil storage tank 115 for recovery.

[0052] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0053] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein with equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An oil-cooled air compressor motor, comprising a housing (100), wherein a stator (200) is arranged inside the housing (100), characterized in that: An inner sleeve (300) is also arranged inside the outer shell (100); the inner sleeve (300) is fixedly connected to the outer shell (100); and the stator (200) is arranged inside the inner sleeve (300); An oil inlet (400) is provided on the outer shell (100), and the outer shell (100) is connected to a first oil passage (500) provided on the inner sleeve (300) through the oil inlet (400), and the first oil passage (500) is spirally arranged, and the first oil passage (500) extends from the right end of the inner sleeve (300) to the left end of the inner sleeve (300); a protrusion (600) is also provided on the inner wall of the inner sleeve (300), and a groove (700) matching with the protrusion (600) is provided on the stator (200), and the protrusion (600) is embedded in the interior of the groove (700); A second oil passage (800) is arranged inside the protrusion (600); the second oil passage (800) is communicated with the first oil passage (500); the second oil passage (800) extends to the right end of the inner sleeve (300), and the second oil passage (800) runs through the protrusion (600), and the second oil passage (800) is used to discharge cooling oil.

2. The oil-cooled air compressor motor according to claim 1, characterized in that: The first oil passage (500) and the second oil passage (800) are connected via an oil transfer ring (900), and the oil transfer ring (900) is arranged at the left end of the inner sleeve (300).

3. An oil-cooled air compressor motor according to claim 2, characterized in that: The oil transfer ring (900) is provided with a connecting groove (110) and a connecting oil passage (111); wherein one end of the connecting groove (110) is connected to the first oil passage (500), the other end of the connecting groove (110) is connected to the connecting oil passage (111), and the connecting oil passage (111) is in communication with the second oil passage (800).

4. The oil-cooled air compressor motor according to claim 1, characterized in that: A limiting portion (112) is also provided inside the inner sleeve (300), and the limiting portion (112) is used to limit the installation of the stator (200).

5. The oil-cooled air compressor motor according to claim 1, characterized in that: End covers are respectively provided at both ends of the outer shell (100), and the end covers are used to seal the outer shell (100).

6. The oil-cooled air compressor motor according to claim 5, characterized in that: The end cover comprises a front end cover (113) and a rear end cover (114), and the front end cover (113) and the rear end cover (114) are respectively fixedly connected to the housing (100).

7. The oil-cooled air compressor motor according to claim 1, characterized in that: A plurality of second oil passages (800) and protrusions (600) are provided, and the plurality of second oil passages (800) and protrusions (600) are evenly arranged along the circumferential direction of the inner sleeve (300).

8. The oil-cooled air compressor motor according to claim 7, characterized in that: The second oil passage (800) is arranged to be inclined downward.

9. The oil-cooled air compressor motor according to claim 1, characterized in that: An oil storage tank (115) is also provided below the housing (100), and the oil storage tank (115) is used to collect discharged cooling oil.

10. The oil-cooled air compressor motor according to claim 9, characterized in that: An oil outlet (116) is also provided at the end of the oil storage tank (115), and the oil outlet (116) is used to discharge cooling oil.

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