Energy-saving motor

Abstract

The application discloses an energy-saving motor, and relates to the field of motors, which comprises a shell and a motor body, the shell comprises a bearing shell, an end part and a heat dissipation part, the bearing shell is provided with mounting holes which penetrate through the bearing shell, the motor body is installed on the inner wall of the mounting holes, the end part and the heat dissipation part are respectively located at two ends of the bearing shell, the end part covers the mounting holes on one side, and the heat dissipation part covers the mounting holes on the other side; the motor body is provided with a rotating shaft, the end part is provided with a shaft hole one, the heat dissipation part is provided with a shaft hole two, one end of the rotating shaft penetrates through the shaft hole one, the other end of the rotating shaft penetrates through the shaft hole two, and one end of the rotating shaft penetrating through the shaft hole two is provided with a thermal expansion element; the heat dissipation part comprises an inner end cover, a fan cover and a fan, and the fan cover covers the fan; when the temperature of the motor rises to the situation that the fan needs to be started, the thermal expansion element expands, and the rotating shaft is indirectly connected with the fan, at this time, the rotation of the rotating shaft drives the rotation of the fan, the rotation of the fan when the fan is not needed is reduced, the waste of energy is reduced, and the overall use is more energy-saving.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of electric machines, more particularly, it relates to an energy-saving electric machine. BACKGROUND

[0002] An electric machine refers to an electromagnetic device that realizes the conversion of mechanical energy and electrical energy or transmission according to the electromagnetic induction law.

[0003] The electric machine is often provided with a fan, which is driven to rotate to improve the heat dissipation of the electric machine during the operation of the electric machine. However, in actual use, the fan will be driven to rotate as soon as the electric machine is started regardless of the temperature of the electric machine. In the case of short-time use of the electric machine, the fan is not needed for heat dissipation, but the output part of the electric machine needs to provide power for the rotation of the fan, which causes energy waste and needs to be improved. SUMMARY

[0004] In order to reduce the problem of energy waste of the electric machine, the present application provides an energy-saving electric machine.

[0005] The present application provides an energy-saving electric machine, which adopts the following technical scheme:

[0006] An energy-saving electric machine comprises a shell and an electric machine body. The shell comprises a bearing shell, an end part and a heat dissipation part. The bearing shell is provided with a mounting hole, the mounting hole penetrates through the bearing shell, the electric machine body is mounted on the inner wall of the mounting hole, the end part and the heat dissipation part are respectively located at two ends of the bearing shell, the end part covers the mounting hole on one side, and the heat dissipation part covers the mounting hole on the other side. The electric machine body is provided with a rotating shaft, the end part is provided with a shaft hole one, the heat dissipation part is provided with a shaft hole two, one end of the rotating shaft penetrates through the shaft hole one and the other end penetrates through the shaft hole two, and one end of the rotating shaft penetrating through the shaft hole two is provided with a thermal expansion element. The heat dissipation part comprises an inner end cover, a fan cover and a fan. The inner end cover is located at one end of the heat dissipation part close to the bearing shell, the shaft hole two is located in the inner end cover, the fan is located at one end of the inner end cover away from the bearing part, the rotating axis of the fan coincides with the axis of the shaft hole two, and the fan cover covers the fan. When the temperature of the shell and the electric machine body rises, the thermal expansion element expands to make the rotating shaft rotate to drive the fan to rotate.

[0007] Through the above technical scheme, the thermal expansion element is arranged. When the temperature of the electric machine does not reach the condition that the fan needs to be started, the thermal expansion element does not connect the rotating shaft and the fan, and at this time the rotation of the rotating shaft is used for the output of the electric machine. When the temperature of the electric machine rises to the condition that the fan needs to be started, the thermal expansion element expands and indirectly connects the rotating shaft and the fan, and at this time the rotation of the rotating shaft drives the rotation of the fan. The rotation of the fan is reduced when the fan is not needed, the energy waste is reduced, and the overall use is more energy-saving.

[0008] Further, one end of the rotating shaft passing through the rotating hole two is fixedly connected with a cylinder, the axis direction of the cylinder is consistent with the axis direction of the rotating shaft, the thermal expansion element is located in the cylinder, the cylinder slides a connecting plate, the sliding direction of the connecting plate is the axis direction of the cylinder, and the connecting plate is located at one end of the thermal expansion element away from the motor body.

[0009] Through the above technical scheme, in actual use, a certain elastic thermal expansion material is often selected, a cylinder is arranged, the cylinder reduces the expansion of the thermal expansion element to the four directions, guides the thermal expansion element to expand towards the fan, and the working of the thermal expansion element is more stable.

[0010] Further, the connecting plate is provided with a return spring, the return spring is located at one side of the connecting plate away from the thermal expansion element, one side of the return spring away from the connecting plate is provided with a magnet one, one side of the fan close to the return spring is provided with a magnet two, the magnetic force of the magnet one and the magnet two makes the magnet one and the magnet two close to each other; when the thermal expansion element is at room temperature, the elastic force of the return spring limits the magnet one and the magnet two to adhere to each other; when the temperature rises to the required temperature for starting the fan, the thermal expansion element expands to make the magnet one move towards the magnet two, at this time, the elastic force of the return spring is insufficient to limit the magnet one and the magnet two to adhere to each other, and the magnet one and the magnet two adhere to each other; when the magnet one and the magnet two adhere to each other and the temperature of the thermal expansion element decreases to the required temperature, the thermal expansion element shrinks to stretch the return spring until the elastic force of the return spring is greater than the attraction force of the magnet one and the magnet two, and the magnet one and the magnet two are separated; the connecting plate is provided with a connecting piece one, and the fan is provided with a connecting piece two; when the magnet one and the magnet two adhere to each other, the connecting piece one connects the connecting piece two, and the rotating shaft rotates to drive the fan to rotate.

[0011] Through the above technical scheme, in actual use, there is a critical temperature to make the thermal expansion element expand to connect the connecting piece one and the connecting piece two, at this time, the rotating shaft rotates to drive the fan to rotate, with the rotation of the fan, the temperature of the motor decreases, the thermal expansion element shrinks to disconnect the rotating shaft and the fan, the fan stops rotating, and the motor continues to work to make the temperature rise, and the thermal expansion element expands again, so as to continuously repeat the above process; therefore, the return spring, the magnet one and the magnet two are arranged to make the three cooperate to delay the effect, when the thermal expansion element expands to the attraction force of the magnet one and the magnet two is greater than the elastic force of the return spring limiting the magnet one and the magnet two to close to each other, the magnet one adheres to the magnet two, the return spring is stretched, and at this time, the return spring is insufficient to make the magnet one and the magnet two separate, and the fan rotates; when the temperature decreases, the thermal expansion element shrinks to further stretch the return spring, until the elastic force of the return spring is greater than the attraction force of the magnet one and the magnet two, the magnet one and the magnet two are separated; such a method reduces the situation that the fan continuously starts or stops at the critical temperature, and makes the overall operation more stable.

[0012] Furthermore, the first connector is a first insert plate, which is located at the end of the connecting plate near the fan. The first insert plate has a first mounting groove, and the first magnet is fixed to the first mounting groove. The first insert plate also has a protrusion at the end near the fan. The second connector is a second insert plate, which is located at the end of the fan near the first insert plate. The second insert plate has a second mounting groove at the end near the first insert plate, and the second magnet is fixed to the second mounting groove. The second insert plate also has a recessed groove at the end near the first insert plate, which is for the protrusion to be inserted.

[0013] Through the above technical solution, by setting the groove and the protrusion, the groove embeds the protrusion so that when the connector one and the connector two are connected, they are difficult to rotate relative to each other, so that when the magnet one and the magnet two are in contact, the rotating shaft controls the fan to rotate more stably.

[0014] Furthermore, the protrusion is provided with a guide slope, which is located at one end of the protrusion near the second insert plate, and the guide slope extends towards the first insert plate along the direction close to the side wall of the protrusion.

[0015] The above technical solution involves setting a guide slope to guide the insert into the slot, making it easier for the insert to be inserted into the slot and making the fan start up faster.

[0016] Furthermore, the second panel is provided with a clearance annular groove, which is located at one end of the second panel close to the first panel. A buffer member is provided at the bottom of the clearance annular groove, and the end of the buffer member away from the bottom of the clearance annular groove is located inside the clearance annular groove.

[0017] With the above technical solution, an impact will occur when magnet one and magnet two are attracted. Due to the rotation of the shaft, the protrusion is difficult to align with the groove. Therefore, the protrusion will hit the insert plate two. The clearance ring groove and buffer are set to reduce the impact damage of the protrusion. As the shaft rotates, the protrusion will slide on the buffer until it is embedded in the groove. Compared with the protrusion sliding against the surface of a hard object, the wear of the protrusion can be reduced.

[0018] Furthermore, the support shell is provided with heat dissipation protrusions, which are located on the outer wall of the support shell.

[0019] The above technical solution incorporates heat dissipation ridges, which increase the contact area between the housing and the air, thereby improving the overall heat dissipation effect.

[0020] Furthermore, the heat dissipation protrusions are provided in multiples, and the multiple heat dissipation protrusions are distributed circumferentially along the outer wall of the supporting shell. The length direction of the heat dissipation protrusions is parallel to the through direction of the mounting holes. When the fan cover is closed, the inner wall of the fan cover abuts against the end of the heat dissipation protrusions away from the supporting shell.

[0021] By using the above technical solution, multiple heat dissipation protrusions are set to further increase the contact area between the carrier shell and the air, thereby improving the heat dissipation effect. The fan cover abuts against the end of the heat dissipation protrusion that is away from the carrier shell, so that when the fan rotates, the air enters from the fan cover and flows out from the gap formed between the fan cover and the heat dissipation protrusion. Some of the air moves along the length of the heat dissipation protrusion, further improving the heat dissipation effect.

[0022] In summary, this application includes at least one of the following beneficial technical effects:

[0023] (1) By setting up thermal expansion components, the connection between the fan and the shaft is controlled by the thermal expansion components, which reduces the fan rotation when it is not needed, reduces energy waste, and makes the overall use more energy-efficient.

[0024] (2) By setting a reset spring, magnet one and magnet two, the continuous opening and closing of the fan at the critical temperature is reduced, making the overall operation more stable.

[0025] (3) By setting multiple heat dissipation protrusions and making the fan cover contact the end of the heat dissipation protrusions away from the carrier shell, the overall heat dissipation effect is improved. Attached Figure Description

[0026] Figure 1 This is an exploded diagram of an embodiment.

[0027] Figure 2 This is a cross-sectional schematic diagram of an embodiment.

[0028] Figure 3 This is a schematic diagram of a fan as an example.

[0029] Figure 4 This is a partial schematic diagram of an embodiment.

[0030] Figure 5 for Figure 4 An enlarged diagram of A in the diagram.

[0031] Reference numerals: 1. Outer casing; 2. Motor body; 3. Bearing shell; 4. End; 5. Heat dissipation part; 51. Inner end cover; 52. Fan cover; 53. Fan; 6. Heat dissipation ridge; 7. Mounting hole; 8. Shaft; 9. Shaft hole one; 10. Shaft hole two; 11. Thermal expansion component; 12. Cylinder; 13. Connecting plate; 14. Return spring; 15. Connecting component one; 16. Connecting component two; 17. Mounting groove one; 18. Magnet one; 19. Mounting groove two; 20. Magnet two; 21. Protrusion; 22. Guide slope; 23. Embedded groove; 24. Relief ring groove; 25. Buffer component; 26. Fixing plate. Detailed Implementation

[0032] The present application will be further described in detail below with reference to the accompanying drawings.

[0033] This application discloses an energy-saving motor.

[0034] Example:

[0035] See Figure 1 and Figure 2 An energy-saving motor includes a housing 1 and a motor body 2. The housing 1 includes a support shell 3, end caps 4, and a heat dissipation section 5. The support shell 3 is cylindrical and has multiple heat dissipation protrusions 6, all located on the outer wall of the support shell 3. The multiple heat dissipation protrusions 6 are evenly spaced along the circumference of the outer wall of the support shell 3, and the length direction of the heat dissipation protrusions 6 is parallel to the axial direction of the support shell 3. The heat dissipation protrusions 6 are used to increase the contact area between the support shell 3 and the air, thereby improving the overall heat dissipation effect. A fixing plate 26 is also provided on the side wall of the support shell 3. The fixing plate 26 is used to fix the motor and reduce the possibility of the motor rolling when placed on the ground. In actual use, two fixing plates 26 are provided, located on opposite sides of the axial direction of the support shell 3.

[0036] The support shell 3 has a mounting hole 7 that extends through the support shell 3 along its axial direction. The motor body 2 is mounted on the inner wall of the mounting hole 7 and has a rotating shaft 8. The motor body 2 drives the rotating shaft 8 to rotate. The end portion 4 and the heat dissipation portion 5 are located at opposite ends of the support shell 3. The end portion 4 covers one side of the mounting hole 7, and the heat dissipation portion 5 covers the other side of the mounting hole 7. The end portion 4 has a first shaft hole 9, and the heat dissipation portion 5 has a second shaft hole 10. One end of the rotating shaft 8 passes through the first shaft hole 9, and the other end passes through the second shaft hole 10. The heat dissipation unit 5 includes an inner end cover 51, a fan cover 52, and a fan 53. The inner end cover 51 is located at the end of the support shell 3 away from the end 4. The heat dissipation unit 5 covers the mounting hole 7 through the inner end cover 51. The second shaft hole 10 is located in the inner end cover 51. The fan 53 is located on the side of the inner end cover 51 away from the support. The rotation axis of the fan 53 coincides with the axis of the second shaft hole 10. The fan cover 52 covers the fan 53 and the inner end 4. The inner wall of the fan cover 52 abuts against the end of the heat dissipation protrusion 6 away from the support shell 3. When the fan 53 rotates, gas flows in from the fan cover 52 and flows out from the gap between the fan cover 52 and the heat dissipation protrusion 6 as the fan 53 rotates. The gas flows along the heat dissipation protrusion 6 and the support shell 3 to cool them down. The fan 53 promotes the flow of gas, further improving the heat dissipation effect and reducing the temperature of the support shell 3.

[0037] See Figure 2 and Figure 3The rotating shaft 8 is equipped with a thermal expansion member 11 and a cylinder 12. Both the thermal expansion member 11 and the cylinder 12 are located at the end of the rotating shaft 8 that passes through the shaft hole 10. The cylinder 12 extends along the axial direction and is coaxially connected to the rotating shaft 8. The thermal expansion member 11 is located inside the cylinder 12 and fixed to the end face of the rotating shaft 8. The cylinder 12 is equipped with a connecting plate 13. The connecting plate 13 is located inside the cylinder 12 and at the end of the thermal expansion member 11 away from the motor body 2. The connecting plate 13 slides on the cylinder 12, and the sliding direction of the connecting plate 13 is the axial direction of the cylinder 12.

[0038] See Figure 2 , Figure 3 and Figure 5 The connecting plate 13 is equipped with a return spring 14, which is located on the side of the connecting plate 13 away from the thermal expansion member 11. A connector 15 is located at the end of the return spring 14 away from the connecting plate 13, and a connector 2 16 is located at the end of the fan 53 near the connecting plate 13. When the thermal expansion member 11 expands to a certain temperature, connector 15 connects with connector 2 16. The thermal expansion member 11 is made of nylon; alternatively, it can also be made of rubber. In actual use, connector 15 is a first insert plate, which is located at the end of connector 13 near fan 53. The first insert plate has a first mounting groove 17, which is located on the extension line of the axis of rotating shaft 8. The bottom of the mounting groove has a magnet 18. Connector 2 16 is a second insert plate, which is located at the end of fan 53 near insert plate 1. The second insert plate is located on the extension line of the axis of rotating shaft 8. The second insert plate has a second mounting groove 19, which is located at the end of the second insert plate near insert plate 1. The second magnet 20 is fixed in the second mounting groove 19. The magnetic force of the first magnet 18 and the second magnet 20 causes the first magnet 18 and the second magnet 20 to attract each other.

[0039] When the motor is running and the temperature has not reached the limit, the thermal expansion component 11 expands, causing the return spring 14 to move towards the second connector 16. This movement of the return spring 14 causes the first connector 15 to move closer to the second connector 16, increasing the attraction force between the first magnet 18 and the second magnet 20. However, at this point, the attraction force between the first magnet 18 and the second magnet 20 is less than the elastic force of the return spring 14, so the return spring 14 still restricts the attraction between the first magnet 18 and the second magnet 20. As the motor temperature continues to rise, the return spring 14 and the second connector 16 continue to move towards the second connector 16 until the attraction force between the first magnet 18 and the second magnet 20 exceeds the tensile force of the return spring 14. At this point, the attraction force between the first magnet 18 and the second magnet 20 causes the first connector 15 and the second connector 16 to move closer together. When the first connector 15 connects to the second connector 16, the rotating shaft 8 rotates, driving the fan 53 to rotate.

[0040] See Figure 4 and Figure 5The first panel has a protrusion 21 located at one end of the first panel near the second panel. The protrusion 21 has a guide slope 22 located at one end of the first panel near the second panel, extending towards the first panel along the direction close to the sidewall of the protrusion 21. In practical applications, two guide slopes 22 are provided, located on opposite sides of the end face of the first panel. The second panel has a groove 23 located at one end of the second panel near the first panel, corresponding to the protrusion 21, for the protrusion 21 to be inserted. Alternatively, the first connector 15 can also be the second panel, and the second connector 16 can be the first panel. Multiple protrusions 21 and grooves 23 are provided, with the same number and corresponding positions. In this embodiment, two protrusions 21 and two grooves 23 are provided. In practical use, the outer diameter of the insert is the same as the inner diameter of the cylinder 12, and the outer wall of the insert fits against the inner wall of the cylinder 12. Alternatively, the outer diameter of the insert is smaller than the inner diameter of the cylinder 12. In this case, the insert is affected by gravity, and the end of the return spring 14 that is fixed to the insert will sag to a certain extent. Therefore, the size of the groove 23 should be set to be slightly larger than the size of the protrusion 21 to provide a certain tolerance space to facilitate the insertion of the protrusion 21.

[0041] Panel 2 is provided with a clearance groove 24, located at one end of panel 2 near panel 1. A buffer member 25 is provided at the bottom of the clearance groove 24, with the end of the buffer member 25 away from the bottom of the clearance groove 24 located within the clearance groove 24. The buffer member 25 is used to reduce impact breakage and friction damage to the protrusion 21. In practical use, the buffer member 25 can be made of rubber, or alternatively, silicone.

[0042] The working principle of this embodiment is as follows:

[0043] When the motor starts running, the thermal expansion member 11 is at room temperature. As the motor continues to run, the temperature rises and the thermal expansion member 11 expands until the attraction force of magnet 18 and magnet 20 is greater than the elastic force of the return spring 14. At this time, the protrusion 21 presses against the buffer member 25. As the rotating shaft 8 rotates, the protrusion 21 slides on the buffer member 25 until it is embedded in the groove 23. At this time, the rotating shaft 8 rotates and drives the fan 53 to rotate.

[0044] When the motor temperature drops, the thermal expansion member 11 contracts, causing the return spring 14 to move away from the connecting member 2 16. The attraction force of magnet 18 and magnet 20 prevents the protrusion 21 from dislodging from the groove 23. As the temperature drops further, the thermal expansion member 11 continues to contract, causing the elastic force of the return spring 14 to be greater than the attraction force of magnet 18 and magnet 20. Magnet 18 and magnet 20 separate, and the protrusion 21 dislodes from the groove 23.

[0045] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An energy-saving motor, comprising a housing (1) and a motor body (2), characterized in that: The outer casing (1) includes a support shell (3), an end (4) and a heat dissipation part (5). The support shell (3) is provided with a mounting hole (7). The mounting hole (7) passes through the support shell (3). The motor body (2) is installed on the inner wall of the mounting hole (7). The end (4) and the heat dissipation part (5) are located at the two ends of the support shell (3). The end (4) covers the mounting hole (7) on one side, and the heat dissipation part (5) covers the mounting hole (7) on the other side. The motor body (2) is provided with a rotating shaft (8), the end (4) is provided with a shaft hole one (9), the heat dissipation part (5) is provided with a shaft hole two (10), one end of the rotating shaft (8) passes through the shaft hole one (9) and the other end passes through the shaft hole two (10), and a thermal expansion member (11) is provided at the end of the rotating shaft (8) that passes through the shaft hole two (10); The heat dissipation part (5) includes an inner end cover (51), a fan cover (52) and a fan (53). The heat dissipation part (5) covers the mounting hole (7) through the inner end cover (51). The second shaft hole (10) is located in the inner end cover (51). The fan (53) is located on the side of the inner end cover (51) away from the bearing part. The rotation axis of the fan (53) coincides with the axis of the second shaft hole (10). The fan cover (52) covers the fan (53). When the temperature of the outer casing (1) and the motor body (2) rises, the thermal expansion component (11) expands, causing the shaft (8) to rotate and driving the fan (53) to rotate; The rotating shaft (8) is fixedly connected to a cylinder (12) at one end through the shaft hole (10). The axis of the cylinder (12) is consistent with the axis of the rotating shaft (8). The thermal expansion member (11) is located inside the cylinder (12). A connecting plate (13) slides on the cylinder (12). The sliding direction of the connecting plate (13) is the axis of the cylinder (12). The connecting plate (13) is located at the end of the thermal expansion member (11) away from the motor body (2). The connecting plate (13) is provided with a return spring (14). The return spring (14) is located on the side of the connecting plate (13) away from the thermal expansion member (11). A magnet (18) is provided on the side of the return spring (14) away from the connecting plate (13). A magnet (20) is provided on the side of the fan (53) close to the return spring (14). The magnetic force of the magnet (18) and the magnet (20) makes the magnet (18) and the magnet (20) approach each other. When the thermal expansion member (11) is at room temperature, the spring force of the return spring (14) restricts the magnet one (18) and the magnet two (20) from sticking together; when the temperature rises to the temperature required to turn on the fan (53), the thermal expansion member (11) expands, causing the magnet one (18) to move towards the magnet two (20). At this time, the spring force of the return spring (14) is insufficient to restrict the magnet one (18) and the magnet two (20) from sticking together, and the magnet one (18) and the magnet two (20) stick together; when the magnet one (18) and the magnet two (20) stick together and the temperature of the thermal expansion member (11) drops to the required temperature, the thermal expansion member (11) contracts, causing the return spring (14) to stretch until the spring force of the return spring (14) is greater than the attraction force of the magnet one (18) and the magnet two (20), and the magnet one (18) and the magnet two (20) separate. The reset spring (14) is provided with a connector one (15), and the fan (53) is provided with a connector two (16). When magnet one (18) and magnet two (20) are in contact, connector one (15) connects to connector two (16), and the rotating shaft (8) rotates to drive the fan (53) to rotate.

2. The energy-saving motor according to claim 1, characterized in that: The first connector (15) is a first insert plate, which is located at the end of the connecting plate (13) near the fan (53). The first insert plate is provided with a first mounting groove (17), and the first magnet (18) is fixed in the first mounting groove (17). The first insert plate is also provided with a protrusion (21) at the end near the fan (53). The second connector (16) is a second insert plate, which is located at the end of the fan (53) near the first insert plate. The second insert plate is provided with a second mounting groove (19) at the end near the first insert plate, and the second magnet (20) is fixed in the second mounting groove (19). The second insert plate is also provided with a groove (23) at the end near the first insert plate, and the groove (23) is for the protrusion (21) to be inserted.

3. The energy-saving motor according to claim 2, characterized in that: The protrusion (21) is provided with a guide slope (22), which is located at one end of the protrusion (21) near the second insert, and extends along the direction near the side wall of the protrusion (21) toward the first insert.

4. An energy-saving motor according to claim 3, characterized in that: The second panel is provided with a relief groove (24), which is located at one end of the second panel close to the first panel. A buffer (25) is provided at the bottom of the relief groove (24), and the end of the buffer (25) away from the bottom of the relief groove (24) is located inside the relief groove (24).

5. An energy-saving motor according to claim 1, characterized in that: The support shell (3) is provided with heat dissipation protrusions (6), which are located on the outer wall of the support shell (3).

6. An energy-saving motor according to claim 5, characterized in that: The heat dissipation protrusions (6) are provided in multiples, and the multiple heat dissipation protrusions (6) are distributed circumferentially along the outer wall of the bearing shell (3). The length direction of the heat dissipation protrusions (6) is parallel to the through direction of the mounting hole (7). When the fan cover (52) covers the fan (53), the inner wall of the fan cover (52) abuts against the end of the heat dissipation protrusions (6) away from the bearing shell (3).

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