Motor rotor for compressor motor

Abstract

The utility model discloses a motor rotor for a compressor motor. The motor rotor comprises a rotating shaft, an iron core and a compression ring, the iron core is arranged in the middle of the rotating shaft and is fixedly connected with the rotating shaft; the pressing ring is arranged at the end part of the iron core and is fixedly connected with the iron core; a cooling oil duct is arranged in the rotating shaft, a connecting oil duct is further arranged in the rotating shaft, one end of the connecting oil duct is communicated with the cooling oil duct, and the other end of the connecting oil duct is communicated with an oil groove formed in the inner wall of the iron core; a connecting hole is formed in the middle of the pressing ring, one end of the connecting hole is connected with the oil groove, and the other end of the connecting hole is communicated with the outside. According to the utility model, when cooling oil passes through the connecting oil channel, the oil groove and the connecting hole, heat generated in the motor can be taken away, and the cooling effect on the iron core and the rotating shaft can be realized, so that the safe operation of the motor is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of motor rotors, in particular to a motor rotor for a compressor motor. Background Art

[0002] Motor rotor: It is also the rotating part in the motor. The motor consists of two parts: the rotor and the stator. It is a device used to realize the conversion of electrical energy into mechanical energy and mechanical energy into electrical energy. The motor rotor is divided into motor rotor and generator rotor. The motor rotor is mainly composed of a shaft and a rotor core.

[0003] In the prior art, for example, the technical solution described in the patent with publication number: CN216451200U is: a motor rotor mounting structure, which achieves the cooperation between the upper cover and the motor housing by clamping half of the bearing sleeve of the gasket into the front end of the rotor, so that it moves against the L-shaped support plate and limits it through the limiting rod, thereby squeezing the gasket in front of the rotor for limiting.

[0004] In the prior art, since the rotor is entirely located inside the motor housing, the existing motor rotor mainly achieves working heat dissipation of the motor rotor through the setting of fan blades inside the motor housing. Since the rotor itself does not have a heat dissipation function, the heat dissipation efficiency of the rotor is reduced, and efficient heat dissipation of the rotor cannot be achieved. Utility Model Content

[0005] The purpose of the utility model is to provide a motor rotor for a compressor motor, so as to solve the problem in the prior art proposed in the background technology that the rotor has no heat dissipation effect because it is located inside the motor housing, thereby reducing its heat dissipation efficiency and failing to achieve efficient heat dissipation of the rotor.

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

[0007] A motor rotor for a compressor motor comprises a rotating shaft, an iron core and a pressure ring; wherein the iron core is arranged in the middle of the rotating shaft and is fixedly connected to the rotating shaft; the pressure ring is arranged at the end of the iron core and is fixedly connected to the iron core;

[0008] A cooling oil channel is provided inside the rotating shaft, the end of the cooling oil channel is connected to the outside, and cooling oil is injected into the cooling oil channel; a connecting oil channel is also provided inside the rotating shaft, one end of the connecting oil channel is connected to the cooling oil channel, and the other end of the connecting oil channel extends to the outside of the rotating shaft and is connected to an oil groove provided on the inner wall of the iron core; the oil groove runs through the iron core;

[0009] A connecting hole is arranged in the middle of the pressure ring, one end of the connecting hole is connected to the oil groove, and the other end of the connecting hole is communicated with the outside for discharging the cooling oil.

[0010] According to the above technical solution, two pressure rings are provided, and the two pressure rings are respectively arranged at the two ends of the iron core.

[0011] According to the above technical solution, connection holes are provided inside the two pressure rings, and the connection holes are connected to the oil groove of the iron core.

[0012] According to the above technical solution, a plurality of mounting protrusions are further provided on the outer wall of the iron core, and mounting grooves are formed between adjacent mounting protrusions, and the mounting grooves are used to install the magnetic steel.

[0013] According to the above technical solution, a limiting protrusion is provided at the upper end of the mounting protrusion, and the limiting protrusion is used for positioning the magnetic steel.

[0014] According to the above technical solution, a mounting hole is further provided in the middle of the limiting protrusion, and the limiting protrusion is fixedly connected to the pressing ring through the mounting hole.

[0015] According to the above technical solution, a groove is also provided on the inner wall of the pressure ring, and the groove is used to install the magnetic steel.

[0016] According to the above technical solution, blades are also arranged on the outer wall of the pressure ring, and the blades are fixedly arranged on the pressure ring.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] In the utility model, a cooling oil channel is provided in the middle of the rotating shaft, and cooling oil is injected into the cooling oil channel, so that the cooling oil passes through the connecting oil channel, the oil groove and the connecting hole and is discharged into the motor; while the cooling oil passes through the connecting oil channel, the oil groove and the connecting hole, it will take away the heat generated inside the motor, which can cool the iron core and the rotating shaft, thereby ensuring the safe operation of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the internal structure of the rotor of the utility model;

[0020] Figure 2 It is a three-dimensional structural schematic diagram of the rotor of the utility model;

[0021] Figure 3 This is a schematic diagram of the iron core structure of the rotor of the utility model.

[0022] Markings in the figure: 100 - shaft, 200 - iron core, 300 - pressure ring, 400 - cooling oil channel, 500 - connecting oil channel, 600 - oil groove, 700 - connecting hole, 800 - mounting protrusion, 900 - mounting groove, 110 - limiting protrusion, 111 - mounting hole, 112 - groove, 113 - blade. DETAILED DESCRIPTION

[0023] 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.

[0024] Embodiment 1

[0025] like Figure 1 As shown, a motor rotor for a compressor motor includes a rotating shaft 100, an iron core 200 and a pressure ring 300; wherein the iron core 200 is arranged in the middle of the rotating shaft 100, and the iron core 200 is fixedly connected to the rotating shaft 100; the pressure ring 300 is arranged at the end of the iron core 200, and is fixedly connected to the iron core 200;

[0026] A cooling oil channel 400 is provided inside the rotating shaft 100, the end of the cooling oil channel 400 is connected to the outside, and cooling oil is injected into the cooling oil channel 400; a connecting oil channel 500 is also provided inside the rotating shaft 100, one end of the connecting oil channel 500 is communicated with the cooling oil channel 400, and the other end of the connecting oil channel 500 extends to the outside of the rotating shaft 100 and is communicated with an oil groove 600 provided on the inner wall of the iron core 200; the oil groove 600 is provided through the iron core 200;

[0027] A connecting hole 700 is provided in the middle of the pressure ring 300 , one end of the connecting hole 700 is connected to the oil groove 600 , and the other end of the connecting hole 700 is communicated with the outside for discharging the cooling oil.

[0028] In the utility model, a cooling oil channel 400 is provided in the middle of the rotating shaft 100, and cooling oil is injected into the cooling oil channel 400, so that the cooling oil passes through the connecting oil channel 500, the oil groove 600 and the connecting hole 700 and is discharged into the motor; while the cooling oil passes through the connecting oil channel 500, the oil groove 600 and the connecting hole 700, it will take away the heat generated inside the motor, and can cool down the iron core 200 and the rotating shaft 100, thereby ensuring the safe operation of the motor.

[0029] Embodiment 2

[0030] This embodiment is a further refinement of the first embodiment.

[0031] like Figure 2 As shown, two pressure rings 300 are provided, and the two pressure rings 300 are respectively provided at both ends of the iron core 200. The insides of the two pressure rings 300 are both provided with connecting holes 700, and the connecting holes 700 are both communicated with the oil groove 600 of the iron core 200.

[0032] Specifically, a connecting hole 700 is provided inside the pressure ring 300 , and the outside is connected to the oil groove 600 through the connecting hole 700 , so that the oil in the oil groove 600 can be discharged.

[0033] Specifically, when the rotating shaft 100 rotates, it drives the iron core 200 and the pressing ring 300 to rotate together, so that the cooling oil is thrown out from the inside of the oil tank 600 by utilizing the centrifugal force, and the inside of the motor is cooled.

[0034] In the prior art, the magnet is generally connected to the iron core 200 by bonding, and the motor easily generates a large amount of heat during operation, which causes the connection between the magnet and the iron core 200 to loosen.

[0035] like Figure 3 As shown, a plurality of mounting protrusions 800 are provided on the outer wall of the core 200, and mounting grooves 900 are formed between adjacent mounting protrusions 800 for mounting the magnetic steel. A limiting protrusion 110 is provided on the upper end of the mounting protrusion 800 for positioning the magnetic steel.

[0036] Specifically, an installation groove 900 is formed between the installation protrusions 800, and the magnet is installed through the installation groove 900, so as to fix the magnet and the iron core 200, improve the connection strength between the iron core 200 and the magnet, and prevent the magnet from falling off from the iron core 200 during the rotation of the shaft 100, thereby affecting the operation of the motor.

[0037] Preferably, 24 mounting protrusions 800 are provided.

[0038] The middle of the limiting protrusion 110 is also provided with a mounting hole 111, and the limiting protrusion 110 is fixedly connected to the pressing ring 300 through the mounting hole 111. A groove 112 is also provided on the inner wall of the pressing ring 300, and the groove 112 is used to install the magnetic steel.

[0039] Specifically, by setting a groove 112 on the inner wall of the pressure ring 300 and setting the end of the magnet inside the groove 112, the installation space of the pressure ring 300 is saved. At the same time, the pressure ring 300 also plays an axial limiting role on the two ends of the magnet, completing the fixation of the magnet and preventing the magnet from falling off during the rotation of the rotor.

[0040] Blades 113 are also provided on the outer wall of the pressure ring 300 , and the blades 113 are fixedly arranged on the pressure ring 300 .

[0041] Specifically, the blades 113 are fixedly disposed on the pressure ring 300 . When the shaft 100 rotates, the shaft 100 drives the pressure ring 300 and the blades 113 to rotate together, thereby dissipating heat inside the motor.

[0042] The working principle of the utility model is as follows: when in use, cooling oil is injected into the interior of the rotating shaft 100 through the cooling oil channel 400, the cooling oil enters the interior of the iron core 200 through the connecting oil channel 500, and moves to the two ends of the iron core 200 through the oil groove 600 provided on the inner wall of the iron core 200, thereby dissipating the heat inside the iron core 200.

[0043] When the cooling oil reaches both ends of the iron core 200, it enters into the interior of the pressure ring 300 through the connecting hole 700 connected to the iron core 200. As the rotating shaft 100 drives the pressure ring 300 to rotate together, centrifugal force is generated, and the cooling oil is thrown out from the interior of the pressure ring 300, thereby completing the heat dissipation of the motor rotor.

[0044] 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.

[0045] 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 by 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. A motor rotor for a compressor motor, characterized in that: The invention comprises a rotating shaft (100), an iron core (200) and a pressure ring (300); wherein the iron core (200) is arranged at the middle of the rotating shaft (100), and the iron core (200) is fixedly connected to the rotating shaft (100); and the pressure ring (300) is arranged at the end of the iron core (200) and is fixedly connected to the iron core (200); A cooling oil channel (400) is provided inside the rotating shaft (100), the end of the cooling oil channel (400) is connected to the outside, and cooling oil is injected into the cooling oil channel (400); a connecting oil channel (500) is also provided inside the rotating shaft (100), one end of the connecting oil channel (500) is communicated with the cooling oil channel (400), and the other end of the connecting oil channel (500) extends to the outside of the rotating shaft (100) and is communicated with an oil groove (600) provided on the inner wall of the iron core (200); the oil groove (600) is provided through the iron core (200); A connecting hole (700) is provided in the middle of the pressure ring (300), one end of the connecting hole (700) is connected to the oil groove (600), and the other end of the connecting hole (700) is communicated with the outside for discharging cooling oil.

2. The motor rotor for a compressor motor according to claim 1, characterized in that: Two pressure rings (300) are provided, and the two pressure rings (300) are respectively provided at two ends of the iron core (200).

3. The motor rotor for a compressor motor according to claim 2, characterized in that: The two pressure rings (300) are both provided with connection holes (700) inside, and the connection holes (700) are both communicated with the oil groove (600) of the iron core (200).

4. A motor rotor for a compressor motor according to claim 1 or 3, characterized in that: A plurality of mounting protrusions (800) are also arranged on the outer wall of the iron core (200), and mounting grooves (900) are formed between adjacent mounting protrusions (800), and the mounting grooves (900) are used for mounting magnetic steel.

5. The motor rotor for a compressor motor according to claim 4, characterized in that: A limiting protrusion (110) is arranged at the upper end of the installation protrusion (800), and the limiting protrusion (110) is used for positioning the magnetic steel.

6. The motor rotor for a compressor motor according to claim 5, characterized in that: A mounting hole (111) is also provided in the middle of the limiting protrusion (110), and the limiting protrusion (110) is fixedly connected to the pressing ring (300) through the mounting hole (111).

7. The motor rotor for a compressor motor according to claim 6, characterized in that: A groove (112) is also provided on the inner wall of the pressure ring (300), and the groove (112) is used for installing the magnetic steel.

8. The motor rotor for a compressor motor according to claim 7, characterized in that: A blade (113) is also provided on the outer wall of the pressure ring (300), and the blade (113) is fixedly arranged on the pressure ring (300).

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