Motor with low temperature radiation

Abstract

The utility model discloses a motor with low temperature radiation, which comprises a casing, a rotating shaft, a motor stator, a motor rotor, a bearing, a rotating shaft cooling flow channel and a body cooling flow channel, the rotating shaft cooling runner is formed in the rotating shaft, a rotating shaft cooling runner inlet and a rotating shaft cooling runner outlet are formed in the two ends of the rotating shaft cooling runner, and the rotating shaft cooling runner inlet and the rotating shaft cooling runner outlet are located in the two end faces of the rotating shaft respectively; a machine body cooling flow channel inlet and a machine body cooling flow channel outlet are formed in the two ends of the machine body cooling flow channel, and the machine body cooling flow channel inlet and the machine body cooling flow channel outlet are located in the machine shell. According to the utility model, cooling of the rotating shaft and the motor rotor is realized by introducing the cooling medium into the rotating shaft cooling flow channel, and cooling of the casing, the motor stator and the bearing is realized by introducing the cooling medium into the machine body cooling flow channel, thereby limiting temperature rise of the motor, greatly reducing heat radiation of the motor, and prolonging service life of the motor. And the requirement of the motor on low-temperature radiation is met.

Description

Technical Field

[0001] The utility model relates to the technical field of motor cooling, in particular to a motor with low temperature radiation. Background Art

[0002] With the rapid development of various industries such as aerospace, aerospace, molds, electronics, and automobiles, further requirements have been put forward for the accuracy, efficiency, and reliability of processing equipment. Guide rails and screws are widely used in the linear axis drive structure of such processing equipment. When the existing motor drives the guide rails and screws to move, a large amount of heat is generated due to the high-speed rotation and frequent start and stop of the motor, causing the temperature of the motor to rise and radiate heat to the guide rails or screws connected to it. The guide rails and screws are prone to thermal deformation under the action of the motor's thermal radiation, thereby affecting the processing accuracy of the equipment. Therefore, it is necessary to design a motor with low temperature radiation. Utility Model Content

[0003] The utility model provides a motor with low temperature radiation to meet the demand of the motor for low temperature radiation.

[0004] In order to achieve the above purpose, the technical solution of the utility model is:

[0005] A motor with low temperature radiation comprises: a casing, a rotating shaft, a motor stator, a motor rotor and a bearing, the motor further comprising a rotating shaft cooling channel and a body cooling channel; the rotating shaft cooling channel is opened in the rotating shaft, and a rotating shaft cooling channel inlet and a rotating shaft cooling channel outlet are arranged at both ends of the rotating shaft cooling channel, and the rotating shaft cooling channel inlet and the rotating shaft cooling channel outlet are respectively located on the two end surfaces of the rotating shaft; a body cooling channel inlet and a body cooling channel outlet are arranged at both ends of the body cooling channel, and the body cooling channel inlet and the body cooling channel outlet are located on the casing.

[0006] Furthermore, the body cooling flow channel also includes a spiral flow channel and a first flow channel opened in the casing; the spiral flow channel is located between the motor stator and the casing, and the spiral flow channel is spirally arranged around the outer circumference of the motor stator; the first flow channel connects to the spiral flow channel.

[0007] Furthermore, the casing includes: a front cover, an outer shell and a rear cover, the front cover and the rear cover are fixed at both ends of the outer shell, a plurality of bearings are installed in the front cover and the rear cover, the front end of the rotating shaft passes through the front cover through the bearing, and the rear end of the rotating shaft passes through the rear cover through the bearing. The rear cover is provided with a first hole, a second hole and a first flow path, the fuselage cooling flow path inlet and the fuselage cooling flow path outlet are provided on the rear cover and are respectively connected with the first hole and the second hole, the outer shell is provided with a third hole, a fourth hole and a fifth hole, and the front cover is provided with a second flow path; the first hole, the third hole, the second flow path, the fourth hole, the spiral flow path, the fifth hole, the first flow path and the second hole are connected in sequence.

[0008] Furthermore, the second flow path includes: channel A, channel B, channel C and channel D, channel A is connected to the third channel, one end of channel B and channel C are connected to channel A, and the other end is connected to channel D, channel D is connected to the fourth channel, and channel A, channel B, channel C and channel D are arranged around the rotating axis.

[0009] Furthermore, the first flow path includes: channel a, channel b, channel c and channel d, channel a is connected to the fifth channel, one end of channel b and channel c are connected to channel a, and the other end is connected to channel d, channel d is connected to the second channel, and channel a, channel b, channel c and channel d are arranged around the rotating axis.

[0010] Furthermore, the fourth channel and the fifth channel correspond to two ends of the spiral flow channel respectively.

[0011] Furthermore, a slip ring is sleeved on the outer circumference of the rotating shaft, and the slip ring is located on the side of the casing away from the outlet of the rotating shaft cooling channel. A first air inlet hole is radially opened on the slip ring, and a second air inlet hole is opened on the rotating shaft. The first air inlet hole is connected to the rotating shaft cooling channel through the second air inlet hole.

[0012] Furthermore, the rotating shaft is rotatably connected relative to the slip ring, an annular groove is provided on the inner wall of the slip ring, an opening of the annular groove corresponds to the opening of the second air inlet hole, and the first air inlet hole is connected to the annular groove.

[0013] Beneficial effects:

[0014] The motor with full body cooling disclosed in the present application achieves cooling of the shaft and the motor rotor by passing a cooling medium into the shaft cooling flow channel, and achieves cooling of the casing and the motor stator by passing a cooling medium into the body cooling flow channel, thereby limiting the increase in motor temperature, significantly reducing the heat radiation of the motor, and meeting the motor's demand for low-temperature radiation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0016] Figure 1 This is a front view of a motor with low temperature radiation disclosed in the utility model;

[0017] Figure 2 It is a left view of a motor with low temperature radiation disclosed in the utility model;

[0018] Figure 3 for Figure 2 The cross-sectional view of AA in FIG.

[0019] Figure 4 for Figure 2 A cross-sectional view of BB in FIG.

[0020] Figure 5 for Figure 2 A cross-sectional view of CC in FIG.

[0021] Figure 6 for Figure 2 A cross-sectional view of DD in FIG.

[0022] Figure 7 for Figure 1 A cross-sectional view of FF in FIG.

[0023] Figure 8 for Figure 1 A cross-sectional view of EE in FIG.

[0024] Fig. 9 for Figure 3 A partial enlarged view of Ⅰ in FIG.

[0025] 1. Casing; 11. Front cover; 12. Outer shell; 13. Rear cover; 2. Rotating shaft; 21. Second air inlet; 3. Motor stator; 4. Motor rotor; 5. Bearing;

[0026] 6. Shaft cooling channel; 61. Shaft cooling channel inlet; 62. Shaft cooling channel outlet;

[0027] 71, fuselage cooling channel inlet; 72, fuselage cooling channel outlet; 73, spiral channel; 741, first channel; 742, second channel; 7431, a channel; 7432, b channel; 7433, c channel; 7434, d channel; 744, third channel; 745, fourth channel; 746, fifth channel; 7471, A channel; 7472, B channel; 7473, C channel; 7474, D channel;

[0028] 8. Slip ring; 81. First air inlet hole; 82. Annular groove; 91. Encoder; 92. Protective cover. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of 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.

[0030] A motor with low temperature radiation, combined with Figure 1 , Figure 2 and Figure 3 As shown, it includes: a casing 1, a rotating shaft 2, a motor stator 3, a motor rotor 4 and a bearing 5, and the motor also includes a rotating shaft cooling channel 6 and a body cooling channel; the rotating shaft cooling channel 6 is opened in the rotating shaft 2, and a rotating shaft cooling channel inlet 61 and a rotating shaft cooling channel outlet 62 are provided at both ends of the rotating shaft cooling channel 6, and the rotating shaft cooling channel inlet 61 and the rotating shaft cooling channel outlet 62 are respectively located on the two end surfaces of the rotating shaft 2; a body cooling channel inlet 71 and a body cooling channel outlet 72 are provided at both ends of the body cooling channel, and the body cooling channel inlet 71 and the body cooling channel outlet 72 are located on the casing 1.

[0031] The shaft cooling channel inlet 61 and the shaft cooling channel outlet 62 are connected to the cooling device. The shaft cooling channel inlet 61 can be connected to the outlet of the cooling device through a rotary joint and a pipeline. The shaft cooling channel outlet 62 can be directly connected to the cooling channel of the device to be cooled, such as a hollow cooling screw. The cooling channel of the device to be cooled is then connected to the inlet of the cooling device. The cooling medium enters the shaft cooling channel 6 through the shaft cooling channel inlet 61, and the motor rotor 4 exchanges heat with the shaft 2. The cooling medium exchanges heat with the shaft 2. The cooling medium takes away the heat generated by the motor rotor 4 and the shaft 2 to cool the shaft 2 and the motor rotor 4. The cooling medium then flows back to the cooling device through the shaft cooling channel outlet 62 for circulation. The inlet 71 and outlet 72 of the cooling channel of the fuselage are connected to the cooling device, and the cooling medium enters the cooling channel of the fuselage through the inlet 71 of the cooling channel of the fuselage, and the casing 1 and the motor stator 3 exchange heat with the cooling medium, and the cooling medium takes away the heat of the casing 1 and the motor stator 3 to cool the casing 1 and the motor stator 3, and the cooling medium then flows back to the cooling device through the outlet 72 of the cooling channel of the fuselage for circulation. The motor realizes the cooling of the heating parts of the motor through the shaft cooling channel 6 and the cooling channel of the fuselage, realizes the cooling of the whole body of the motor, limits the increase of the temperature of the motor, greatly reduces the heat radiation of the motor, and meets the demand of the motor for low temperature radiation.

[0032] Preferably, the body cooling channel also includes a spiral channel 73 and a first channel opened in the housing 1. The spiral channel 73 is located between the motor stator 3 and the housing 1. The spiral channel 73 is spirally arranged around the outer circumference of the motor stator 3. The simultaneous contact between the spiral channel 73 and the housing 1 and the motor stator 3 is conducive to the heat exchange between the cooling medium and the housing 1 and the motor stator 3 respectively. The spiral arrangement of the spiral channel 73 can increase the heat exchange area and improve the cooling effect. The first channel is connected to the spiral channel 73, and the cooling medium enters the first channel through the body cooling channel inlet 71, then enters the spiral channel 73 through the first channel, and finally flows out through the first channel through the body cooling channel outlet 72.

[0033] Preferably, combined Figure 1 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, the housing 1 includes: a front cover 11, an outer shell 12 and a rear cover 13. The front cover 11 and the rear cover 13 are fixed at both ends of the outer shell 12. A plurality of bearings 5 ​​are installed in the front cover 11 and the rear cover 13. The front end of the rotating shaft 2 passes through the front cover 11 through the bearing 5, and the rear end of the rotating shaft 2 passes through the rear cover 13 through the bearing 5. The bearing 5 is used to support the rotation of the rotating shaft 2. The rear cover 13 is provided with a first hole 741, a second hole 742 and a first flow path. The fuselage cooling flow path inlet 71 and the fuselage cooling flow path outlet 72 are arranged on the rear cover 13 and are connected to the first hole 741 and the second hole 742 respectively. The outer shell 12 is provided with a third hole 744, a fourth hole 745 and a fifth hole 746. The front cover 11 is provided with a second flow path; the first hole 741, the third hole 744, the second flow path, the fourth hole 745 and the spiral flow path 746 are provided. 3. The fifth channel 746, the first flow path and the second channel 742 are connected in sequence; the cooling medium flows from the first channel 741 into the third channel 744 in the outer shell 12, and then flows through the second flow path in the front end cover 11 to the fourth channel 745 in the outer shell 12, and then flows into the spiral channel 73 through the fourth channel 745. After the cooling medium spirally flows in the spiral flow channel 73, it flows out from the fifth channel 746 in the outer shell 12, and then flows into the second channel 742 through the first flow path in the rear end cover 13.

[0034] Specifically, the first hole 741 and the second hole 742 vertically penetrate the rear end cover 13, the third hole 744 axially penetrates the shell 12, the outward opening of the first hole 741 is the fuselage cooling flow channel inlet 71, the inward opening of the first hole 741 is opposite to and connected with one opening of the third hole 744, and the other opening of the third hole 744 is connected with the second flow path. A spiral groove is provided on the outer peripheral surface of the motor stator 3, and the spiral groove and the inner wall of the shell 12 form a spiral flow channel 73. One end of the fourth hole 745 is connected with the spiral flow channel 73, and the other end is located on the end surface of the shell 12 facing the front end cover 11 and is connected with the second flow path. One end of the fifth hole 746 is connected with the spiral flow channel 73, and the other end is located on the end surface of the shell 12 facing the rear end cover 13 and is connected with the first flow path. The outward opening of the second hole 742 is the fuselage cooling flow channel outlet 72, and the inward opening of the second hole 742 is connected with the first flow path.

[0035] Preferably, combined Figure 3 , Figure 4 , Figure 6 and Figure 7As shown, the second flow path includes: A channel 7471, B channel 7472, C channel 7473 and D channel 7474, A channel 7471 is connected to the third channel 744, one end of B channel 7472 and C channel 7473 are connected to A channel 7471, and the other end is connected to D channel 7474, D channel 7474 is connected to the fourth channel 745, A channel 7471, B channel 7472, C channel 7473 and D channel 7474 are arranged around the rotating shaft 2. The cooling medium flows into A channel 7471 from the third channel 744, then flows into D channel 7474 through B channel 7472 and C channel 7473, and then flows into the spiral flow channel 73 through the fourth channel 745, so that the cooling medium flows around the rotating shaft 2, and the cooling medium can exchange heat with the front end cover 11 near the bearing 5, and absorb the heat generated by the high-speed rotation of the rotating shaft 2 and the bearing 5.

[0036] Preferably, combined Figure 3 , Figure 5 , Figure 6 and Figure 8 As shown, the first flow path includes: a channel 7431, b channel 7432, c channel 7433 and d channel 7434, a channel 7431 is connected to the fifth channel 746, one end of b channel 7432 and c channel 7433 are connected to a channel 7431, and the other end is connected to d channel 7434, d channel 7434 is connected to the second channel 742, a channel 7431, b channel 7432, c channel 7433 and d channel 7434 are arranged around the rotating shaft 2. The cooling medium flows into a channel 7431 from the fifth channel 746, then flows into d channel 7434 from b channel 7432 and c channel 7433, and finally flows into the second channel 742, so that the cooling medium flows around the rotating shaft 2, and the cooling medium can exchange heat with the rear end cover 13 near the bearing 5, and absorb the heat generated by the high-speed rotation of the rotating shaft 2 and the bearing 5.

[0037] Specifically, combined Figure 3 , Figure 7 and Figure 8 As shown, the A channel 7471, the B channel 7472, the C channel 7473 and the D channel 7474 are arranged in a tic-tac-toe shape, and the a channel 7431, the b channel 7432, the c channel 7433 and the d channel 7434 are arranged in a tic-tac-toe shape, which is convenient for processing the first flow path and the second flow path. And the bearing 5 is located in the middle of the tic-tac-toe shape, so that the rotating shaft 2 passes through the middle of the tic-tac-toe shape, ensuring that the first flow path cools the hot spots on the rear end cover 13 and the second flow path cools the hot spots on the front end cover 11.

[0038] Preferably, combined Figure 5 and Figure 6As shown, the fourth hole 745 and the fifth hole 746 correspond to the two ends of the spiral channel 73 respectively, ensuring that the cooling medium fully flows through the spiral channel 73, thereby improving the cooling effect of the cooling medium on the motor stator 3 and the housing 12.

[0039] Specifically, combined Figure 1 , Figure 3 and Fig. 9 As shown, an encoder 91 is installed at the tail of the rotating shaft 2, and the encoder 91 is used to measure the rotation angle of the rotating shaft 2. A protective cover 92 is fixed to the rear end cover 13 by screws, and the protective cover 92 covers the encoder 91 to protect the encoder 91.

[0040] Preferably, a slip ring 8 is sleeved on the outer circumference of the rotating shaft 2, and the slip ring 8 is located on the side of the housing 1 away from the outlet 62 of the rotating shaft cooling flow channel, that is, sleeved on the tail of the rotating shaft 2. A first air inlet hole 81 is radially opened on the slip ring 8, and a second air inlet hole 21 is opened on the rotating shaft 2. The first air inlet hole 81 is connected to the rotating shaft cooling flow channel 6 through the second air inlet hole 21, so that the cooling medium is connected to the rotating shaft cooling flow channel 6 from the side of the rotating shaft 2.

[0041] Preferably, the rotating shaft 2 rotates relative to the slip ring 8, and an annular groove 82 is provided on the inner wall of the slip ring 8, the opening of the annular groove 82 corresponds to the orifice of the second air inlet hole 21, and the first air inlet hole 81 is connected to the annular groove 82. The setting of the annular groove 82 enables the orifice of the second air inlet hole 21 to be located within the opening range of the annular groove 82 when the rotating shaft 2 rotates to any angle, and the cooling medium can always flow into the rotating shaft cooling channel 6 from the second air inlet hole 21 after entering the annular groove 82 from the first air inlet hole 81, and the slip ring 8 can realize the input of the cooling medium into the rotating shaft cooling channel 6 rotating at a high speed.

[0042] Specifically, the slip ring 8 is fixed to the protective cover 92 by screws, and a dynamic sealing assembly is provided between the slip ring 8 and the rotating shaft 2 for sealing.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model.

Claims

1. A motor with low temperature radiation, comprising: A casing (1), a rotating shaft (2), a motor stator (3), a motor rotor (4) and a bearing (5), characterized in that the motor further comprises a rotating shaft cooling channel (6) and a body cooling channel; the rotating shaft cooling channel (6) is opened in the rotating shaft (2), and a rotating shaft cooling channel inlet (61) and a rotating shaft cooling channel outlet (62) are provided at both ends of the rotating shaft cooling channel (6), and the rotating shaft cooling channel inlet (61) and the rotating shaft cooling channel outlet (62) are respectively located on the two end surfaces of the rotating shaft (2); a body cooling channel inlet (71) and a body cooling channel outlet (72) are provided at both ends of the body cooling channel, and the body cooling channel inlet (71) and the body cooling channel outlet (72) are located on the casing (1).

2. The motor with low temperature radiation according to claim 1, characterized in that: The body cooling flow channel also includes a spiral flow channel (73) and a first flow channel opened in the housing (1); the spiral flow channel (73) is located between the motor stator (3) and the housing (1), and the spiral flow channel (73) is spirally arranged around the outer circumference of the motor stator (3); and the first flow channel is connected to the spiral flow channel (73).

3. The motor with low temperature radiation according to claim 2, characterized in that: The housing (1) comprises: a front end cover (11), an outer shell (12) and a rear end cover (13); the front end cover (11) and the rear end cover (13) are fixedly mounted at two ends of the outer shell (12); a plurality of bearings (5) are mounted in the front end cover (11) and the rear end cover (13); the front end of the rotating shaft (2) passes through the front end cover (11) via the bearing (5), and the rear end of the rotating shaft (2) passes through the rear end cover (13) via the bearing (5); The rear end cover (13) is provided with a first hole (741), a second hole (742) and a first flow path; the fuselage cooling flow path inlet (71) and the fuselage cooling flow path outlet (72) are arranged on the rear end cover (13) and are respectively connected to the first hole (741) and the second hole (742); the outer shell (12) is provided with a third hole (744), a fourth hole (745) and a fifth hole (746); the front end cover (11) is provided with a second flow path; the first hole (741), the third hole (744), the second flow path, the fourth hole (745), the spiral flow path (73), the fifth hole (746), the first flow path and the second hole (742) are connected in sequence.

4. The motor with low temperature radiation according to claim 3, characterized in that: The second flow path includes: an A channel (7471), a B channel (7472), a C channel (7473) and a D channel (7474); the A channel (7471) is connected to the third channel (744); one end of the B channel (7472) and the C channel (7473) are connected to the A channel (7471) and the other end of the D channel (7474); the D channel (7474) is connected to the fourth channel (745); and the A channel (7471), the B channel (7472), the C channel (7473) and the D channel (7474) are arranged around the rotating shaft (2).

5. The motor with low temperature radiation according to claim 4, characterized in that: The first flow path comprises: an a channel (7431), a b channel (7432), a c channel (7433) and a d channel (7434); the a channel (7431) is connected to the fifth channel (746); one end of the b channel (7432) and the c channel (7433) are both connected to the a channel (7431) and the other end of each is connected to the d channel (7434); the d channel (7434) is connected to the second channel (742); the a channel (7431), the b channel (7432), the c channel (7433) and the d channel (7434) are arranged around the rotating shaft (2).

6. The motor with low temperature radiation according to claim 5, characterized in that: The fourth hole (745) and the fifth hole (746) correspond to two ends of the spiral flow channel (73) respectively.

7. The motor with low temperature radiation according to claim 1, characterized in that: A slip ring (8) is sleeved on the outer circumferential surface of the rotating shaft (2), and the slip ring (8) is located on a side of the housing (1) away from the outlet (62) of the rotating shaft cooling channel. A first air inlet hole (81) is radially opened on the slip ring (8), and a second air inlet hole (21) is opened on the rotating shaft (2). The first air inlet hole (81) is connected to the rotating shaft cooling channel (6) through the second air inlet hole (21).

8. The motor with low temperature radiation according to claim 7, characterized in that: The rotating shaft (2) is rotatably connected relative to the slip ring (8), and an annular groove (82) is provided on the inner wall of the slip ring (8). The opening of the annular groove (82) corresponds to the opening of the second air inlet hole (21), and the first air inlet hole (81) is connected to the annular groove (82).

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