Three-phase motor convenient for adjusting vent holes

Abstract

The three-phase motor comprises a motor body, the front surface of the motor body is sleeved with a rear cover, the outer surface of the rear cover is provided with a plurality of through holes, the through holes are communicated with the inner wall of the motor body, the through holes are uniformly arranged in a surrounding manner, and the motor body is internally provided with a shielding structure. The shielding structure is used for adjusting the sealing number of the through holes. The baffle plates are pushed to move vertically and oppositely, the baffle plates can be attached to the inner wall of the rear cover to deform when being extruded by the inner wall of the rear cover, and the ventilation quantity of the machine body can be adjusted by changing the number of the sealing through holes of the baffle plates, so that the ventilation requirements of different environments are met; the contact area of the motor and the external environment can be flexibly adjusted, the phenomenon that the operation stability of the motor is affected by rapid dissipation of internal heat caused by partial low-temperature environment is reduced, the use requirements of different environments can be met, and the application range of the motor is widened.

Description

Technical Field

[0001] The invention relates to the technical field of three-phase motors, in particular to a three-phase motor which is convenient for adjusting ventilation holes. Background Art

[0002] The three-phase asynchronous motor is a type of induction motor. It is a type of motor that is powered by a 380V three-phase alternating current. Since the rotor and stator rotating magnetic field of the three-phase asynchronous motor rotate in the same direction and at different speeds, there is a slip rate, so it is called a three-phase asynchronous motor. The speed of the rotor of the three-phase asynchronous motor is lower than the speed of the rotating magnetic field. The rotor winding generates electromotive force and current due to relative motion with the magnetic field, and interacts with the magnetic field to generate electromagnetic torque to achieve energy conversion. There is also another type of three-phase synchronous motor, collectively referred to as a three-phase motor.

[0003] In order to ensure the operating stability of the three-phase motor, an air flow fan for heat dissipation is installed inside the three-phase motor. The air flow fan can guide the air flow inside the motor to carry the heat and dissipate it to the external environment.

[0004] For example, the patent application number published on the China Patent Network is: 202010870080.1, and the patent name is: A three-phase motor with a heat dissipation device, including a body and a heat dissipation device for dissipating heat from the body, the heat dissipation device including a heat exchange groove and a water tank, the heat exchange groove is fixed around the outer periphery of the body, and a heat conductive layer that fits the outer shell of the body is provided on the side of the heat exchange groove facing the body, and a plurality of heat sinks are evenly arranged on the side of the heat exchange groove facing away from the body, and the heat exchange groove contains cooling water for heat exchange and cooling of the body. The three-phase motor with a heat dissipation device of the present invention replaces the heat dissipation method of the traditional three-phase motor. Through the heat exchange groove surrounding the outside of the body, the heat generated by the operation of the body can be quickly exchanged and cooled, thereby improving the heat dissipation efficiency and heat dissipation effect of the body and ensuring the normal operation of the body. At the same time, the exhaust fan, guide plate and blower in the water tank can increase the heat dissipation speed of the water after heat exchange, so as to ensure the heat exchange stability of the water in the water tank when participating in each heat exchange cycle.

[0005] However, the contact area between the motor and the external environment is fixed. Some low-temperature environments will cause internal heat to dissipate quickly and affect the operating stability of the motor. It cannot meet the usage requirements of different environments and affects the scope of application of the motor.

[0006] Therefore, it is necessary to redesign the three-phase motor to facilitate the adjustment of the ventilation holes. Summary of the invention

[0007] In order to solve the problems raised in the above-mentioned background technology, the purpose of the present invention is to provide a three-phase motor with easy-to-adjust ventilation holes, which has the advantage of adjustable ventilation volume and solves the problem that the contact area between the motor and the external environment is fixed, and some low-temperature environments will cause internal heat to dissipate quickly and affect the operating stability of the motor, and cannot meet the use requirements of different environments, affecting the scope of application of the motor.

[0008] To achieve the above-mentioned object, the present invention provides the following technical solution: a three-phase motor for facilitating the adjustment of ventilation holes, comprising a body;

[0009] The front side of the machine body is provided with a rear cover;

[0010] The outer surface of the rear cover is provided with through holes, the through holes are connected to the inner wall of the body, and the through holes are in multiple numbers and are evenly arranged around the body;

[0011] A shielding structure is provided inside the body, and the shielding structure is used to adjust the number of through-hole seals;

[0012] An adjustment structure is provided inside the body, the adjustment structure is located inside the shielding structure, and the adjustment structure can drive the shielding structure to adjust;

[0013] The shielding structure includes a connecting plate arranged inside the body, the number of the connecting plates is two and they are arranged symmetrically with each other, a shielding plate is fixedly connected to the outer side of the connecting plate, the number of the shielding plates is two and they are arranged in a mirror image with each other, the shielding plate is elastic, the shielding plate is made of rubber, the side of the shielding plate away from the connecting plate is in contact with the inner surface of the back cover, the shielding plate can seal the through hole, the inner surface of the body is fixedly connected to a guide rail, the guide rail is located on the inner side of the shielding plate, and the shielding plate is slidably connected to the guide rail.

[0014] As a preferred embodiment of the present invention, the adjustment structure includes a screw rod arranged inside the back cover, both ends of the screw rod penetrate the back cover and extend to the inside of the back cover, the back cover and the screw rod are movably connected via a bearing, the surface of the screw rod is threadedly connected with a screw sleeve, the top and bottom of the screw sleeve are movably connected with a crank via a pin, the side of the crank away from the screw sleeve is movably connected with a connecting block via a pin, and the side of the connecting block away from the crank is fixedly connected to the inner side of the connecting plate.

[0015] As a preferred embodiment of the present invention, a vertical plate is fixedly connected to the front of the body, and the vertical plate is located on the back of the shielding plate. A guide rod is fixedly connected to the inner side of the vertical plate. The guide rods are two in number and are located on the back of the screw. The connecting plate is sleeved on the surface of the screw, and the connecting plate is slidably connected to the screw.

[0016] As a preferred embodiment of the present invention, a sleeve is fixedly connected to the right side of the screw sleeve, the sleeve is sleeved on the surface of the screw rod, and the sleeve and the screw rod are threadedly connected.

[0017] As a preferred embodiment of the present invention, the right end of the screw rod passes through the rear cover and extends to the right side of the rear cover, the screw rod and the rear cover are movably connected via a bearing, and the right end of the screw rod is fixedly connected to a rotating wheel, which is located on the right side of the rear cover.

[0018] As a preferred embodiment of the present invention, the top and the bottom of the inner wall of the rear cover are fixedly connected with support blocks, the outer surface of the support block is in the shape of an arc, and the inner side of the shielding plate and the outer surface of the support block are in contact with each other.

[0019] As a preferred embodiment of the present invention, an end cover is provided on the front side of the rear cover, a filter tube is fixedly connected to the back side of the end cover, a side of the filter tube away from the end cover is sleeved on the surface of the rear cover, the through hole is located on the inner side of the filter tube, the filter tube is made of a transverse steel wire rope and a longitudinal steel wire rope that are overlapped and bent, an adjustment groove is opened on the right side of the filter tube, and the adjustment groove is arranged around the surface of the screw.

[0020] As a preferred embodiment of the present invention, a torsion block is provided on the front side of the end cover, a connecting rod is fixedly connected to the back side of the torsion block, a rear end of the connecting rod passes through the end cover and the rear cover in sequence and extends to the interior of the rear cover, the connecting rod and the rear cover are threadedly connected, and the connecting rod and the end cover are movably connected.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. The present invention pushes the shielding plates to move vertically toward each other. When the shielding plates are squeezed by the inner wall of the rear cover, they can deform by fitting to the inner wall of the rear cover. By changing the number of sealing through holes of the shielding plates, the ventilation volume of the machine body can be adjusted to meet the ventilation requirements of different environments. The contact area between the motor and the external environment can be flexibly adjusted to reduce the phenomenon that the internal heat is quickly dissipated due to some low-temperature environments and affects the running stability of the motor. This can meet the use requirements of different environments and improve the application range of the motor.

[0023] 2. The present invention rotates the screw and utilizes the threads on the surface of the screw to push the screw sleeve to move horizontally. During the movement of the screw sleeve, the crank is pushed to extend and the crank is used to squeeze the connecting plate to move outward toward each other, thereby achieving the effect of improving the movement uniformity of multiple baffles. At the same time, the displacement of multiple baffles can be controlled, and the adjusted baffles can be fixed.

[0024] 3. The present invention can improve the movement stability of the connecting plate, increase the contact area between the connecting plate and the machine body, and prevent the connecting plate from tilting during the lifting process by sleeve-arranging the connecting plate on the surface of the guide rod and limiting the connecting plate by the guide rod.

[0025] 4. The present invention can increase the thread engagement distance, improve the connection strength and prevent loosening by sleeve-mounting the sleeve on the surface of the screw and using the thread on the surface of the screw to push the sleeve to move.

[0026] 5. The present invention drives the screw to rotate by means of a rotating wheel, which can increase the contact area between the screw and the hand, making it easier for the user to operate the screw.

[0027] 6. The present invention supports the shielding plate by means of a support block, which can facilitate deformation and bending of the shielding plate, so that the shielding plate can maintain contact with the inner wall of the rear cover, thereby improving the sealing effect of the shielding plate.

[0028] 7. The present invention can shield and seal the through hole by arranging the filter tube sleeve on the surface of the rear cover, thereby reducing the contact area between the through hole and the external environment and preventing dust from entering the interior of the rear cover through the through hole.

[0029] 8. The present invention can improve the installation stability of the end cover and prevent the end cover from being out of contact with the rear cover by rotating the torsion block and connecting the end cover and the rear cover with a connecting rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the structure of the present invention;

[0031] Figure 2 It is a three-dimensional schematic diagram of the local structure of the present invention;

[0032] Figure 3 It is a schematic cross-sectional view of the main structure of the present invention;

[0033] Figure 4 It is a schematic diagram of the partial structure of the present invention;

[0034] Figure 5 It is a top view cross-sectional schematic diagram of a local structure of the present invention;

[0035] Figure 6 For the present invention Figure 3 Enlarged structural diagram at A in the middle.

[0036] In the figure: 1. body; 2. rear cover; 3. through hole; 4. shielding structure; 5. adjustment structure; 6. connecting plate; 7. shielding plate; 8. guide rail; 9. screw; 10. screw sleeve; 11. crank; 12. connecting block; 13. vertical plate; 14. guide rod; 15. sleeve; 16. impeller; 17. support block; 18. end cover; 19. filter tube; 20. adjustment slot; 21. twist block; 22. connecting rod. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] like Figures 1 to 6 As shown, the present invention provides a three-phase motor for adjusting ventilation holes, comprising a body 1;

[0039] The front of the body 1 is provided with a rear cover 2;

[0040] The outer surface of the rear cover 2 is provided with a through hole 3, the through hole 3 is connected to the inner wall of the body 1, and the through holes 3 are in a plurality and are evenly arranged around the body;

[0041] A shielding structure 4 is provided inside the body 1, and the shielding structure 4 is used to adjust the sealing quantity of the through hole 3;

[0042] An adjustment structure 5 is provided inside the body 1, and the adjustment structure 5 is located inside the shielding structure 4, and the adjustment structure 5 can drive the shielding structure 4 to adjust;

[0043] The shielding structure 4 includes a connecting plate 6 arranged inside the body 1, the number of the connecting plates 6 is two and they are arranged symmetrically with each other, a shielding plate 7 is fixedly connected to the outer side of the connecting plate 6, the number of the shielding plates 7 is two and they are arranged in a mirror image with each other, the shielding plate 7 is elastic, the shielding plate 7 is made of rubber, the side of the shielding plate 7 away from the connecting plate 6 is in contact with the inner surface of the back cover 2, the shielding plate 7 can seal the through hole 3, the inner surface of the body 1 is fixedly connected with a guide rail 8, the guide rail 8 is located on the inner side of the shielding plate 7, and the shielding plate 7 is slidably connected to the guide rail 8.

[0044] refer to Figure 3 The adjustment structure 5 includes a screw rod 9 arranged inside the rear cover 2, both ends of the screw rod 9 penetrate the rear cover 2 and extend to the inside of the rear cover 2, the rear cover 2 and the screw rod 9 are movably connected through a bearing, a threaded sleeve 10 is threadedly connected to the surface of the screw rod 9, the top and bottom of the threaded sleeve 10 are movably connected to a crank 11 through a pin shaft, the side of the crank 11 away from the threaded sleeve 10 is movably connected to a connecting block 12 through a pin shaft, and the side of the connecting block 12 away from the crank 11 is fixedly connected to the inner side of the connecting plate 6.

[0045] As a technical optimization scheme of the present invention, by rotating the screw 9 and using the threads on the surface of the screw 9 to push the screw sleeve 10 to move horizontally, the screw sleeve 10 pushes the crank 11 to extend during the movement and uses the crank 11 to squeeze the connecting plate 6 to move outward toward each other, thereby achieving the effect of improving the movement uniformity of the multiple baffles 7. At the same time, the displacement of the multiple baffles 7 can be controlled, and the adjusted baffles 7 can be fixed.

[0046] refer to Figure 3 A vertical plate 13 is fixedly connected to the front of the body 1, and the vertical plate 13 is located on the back of the shielding plate 7. A guide rod 14 is fixedly connected to the inner side of the vertical plate 13. There are two guide rods 14 and they are located on the back of the screw 9. The connecting plate 6 is sleeved on the surface of the screw 9, and the connecting plate 6 is slidably connected to the screw 9.

[0047] As a technical optimization solution of the present invention, by sleeve-mounting the connecting plate 6 on the surface of the guide rod 14 and limiting the connecting plate 6 by the guide rod 14, the movement stability of the connecting plate 6 can be improved, the contact area between the connecting plate 6 and the body 1 can be increased, and the connecting plate 6 can be prevented from tilting during the lifting process.

[0048] refer to Figure 3 A sleeve 15 is fixedly connected to the right side of the screw sleeve 10. The sleeve 15 is sleeved on the surface of the screw rod 9, and the sleeve 15 and the screw rod 9 are threadedly connected.

[0049] As a technical optimization solution of the present invention, by sleeve-mounting the sleeve 15 on the surface of the screw 9 and using the thread on the surface of the screw 9 to push the sleeve 15 to move, the thread engagement distance can be increased, the connection strength can be improved, and loosening can be prevented.

[0050] refer to Figure 3 The right end of the screw rod 9 passes through the rear cover 2 and extends to the right side of the rear cover 2 . The screw rod 9 and the rear cover 2 are movably connected through a bearing. The right end of the screw rod 9 is fixedly connected to a rotating wheel 16 , which is located on the right side of the rear cover 2 .

[0051] As a technical optimization solution of the present invention, by driving the screw 9 to rotate through the rotating wheel 16, the contact area between the screw 9 and the hand can be increased, making it easier for the user to operate the screw 9.

[0052] refer to Figure 6 The top and bottom of the inner wall of the rear cover 2 are fixedly connected with a support block 17, the outer surface of the support block 17 is in an arc shape, and the inner side of the shielding plate 7 and the outer surface of the support block 17 are in contact with each other.

[0053] As a technical optimization solution of the present invention, supporting the baffle plate 7 by the support block 17 can facilitate the deformation and bending of the baffle plate 7, so that the baffle plate 7 can maintain contact with the inner wall of the rear cover 2, thereby improving the sealing effect of the baffle plate 7.

[0054] refer to Figure 1 An end cover 18 is provided on the front of the rear cover 2, and a filter tube 19 is fixedly connected to the back of the end cover 18. The side of the filter tube 19 away from the end cover 18 is sleeved on the surface of the rear cover 2, and the through hole 3 is located on the inner side of the filter tube 19. The filter tube 19 is made of a transverse steel wire rope and a longitudinal steel wire rope that are overlapped and bent. An adjustment groove 20 is opened on the right side of the filter tube 19, and the adjustment groove 20 is arranged around the surface of the screw 9.

[0055] As a technical optimization solution of the present invention, by sleeve-mounting the filter tube 19 on the surface of the rear cover 2, the through hole 3 can be shielded and sealed, thereby reducing the contact area between the through hole 3 and the external environment and preventing dust from entering the interior of the rear cover 2 through the through hole 3.

[0056] refer to Figure 1 A torsion block 21 is provided on the front of the end cover 18, and a connecting rod 22 is fixedly connected to the back of the torsion block 21. The rear end of the connecting rod 22 passes through the end cover 18 and the rear cover 2 in sequence and extends to the interior of the rear cover 2. The connecting rod 22 is threadedly connected to the rear cover 2, and the connecting rod 22 and the end cover 18 are movably connected.

[0057] As a technical optimization solution of the present invention, by rotating the torsion block 21 and connecting the end cover 18 and the rear cover 2 using the connecting rod 22, the installation stability of the end cover 18 can be improved and the end cover 18 can be prevented from being out of contact with the rear cover 2.

[0058] The working principle and use process of the present invention are as follows: when in use, the heat dissipation structure inside the body 1 operates and discharges the airflow containing heat into the external environment through the through holes 3 on the surface of the back cover 2. When the airflow rate needs to be controlled, the rotating wheel 16 can be rotated, and the rotating wheel 16 drives the screw 9 to rotate. The screw 9 uses the thread to push the screw sleeve 10 to move horizontally. During the movement of the screw sleeve 10, the crank 11 is used to squeeze the connecting plate 6, so that the connecting plate 6 drives the baffle plate 7 to move vertically toward each other. When the baffle plate 7 is squeezed by the inner wall of the back cover 2, it can be deformed by fitting to the inner wall of the back cover 2. By changing the number of through holes 3 sealed by the baffle plate 7, the ventilation volume of the body 1 can be adjusted to meet the ventilation needs of different environments.

[0059] To sum up: the three-phase motor with easy-to-adjust ventilation holes can push the baffle plate 7 to move vertically toward each other. When the baffle plate 7 is squeezed by the inner wall of the rear cover 2, it can deform by fitting to the inner wall of the rear cover 2. By changing the number of through holes 3 sealed by the baffle plate 7, the ventilation volume of the body 1 can be adjusted to meet the ventilation needs of different environments. The contact area between the motor and the external environment can be flexibly adjusted to reduce the phenomenon that the internal heat is quickly dissipated due to some low-temperature environments and affects the stability of the motor operation. It can meet the use needs of different environments and improve the application range of the motor.

[0060] 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", "comprises", or any other variation 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 any other variation thereof is intended to cover non-exclusive inclusion, or also includes elements inherent to such process, method, article, or device.

[0061] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A three-phase motor for facilitating the adjustment of ventilation holes, comprising a body (1); The front of the machine body (1) is provided with a rear cover (2); The outer surface of the rear cover (2) is provided with a through hole (3), the through hole (3) is communicated with the inner wall of the body (1), and the through holes (3) are in a plurality and are evenly arranged around the body; Features: A shielding structure (4) is provided inside the machine body (1), and the shielding structure (4) is used to adjust the number of sealed through holes (3); An adjustment structure (5) is provided inside the machine body (1), the adjustment structure (5) is located inside the shielding structure (4), and the adjustment structure (5) can drive the shielding structure (4) to adjust; The shielding structure (4) comprises a connecting plate (6) arranged inside the body (1), the number of the connecting plates (6) is two and they are arranged symmetrically with each other, a shielding plate (7) is fixedly connected to the outer side of the connecting plate (6), the number of the shielding plates (7) is two and they are arranged in a mirror image with each other, the shielding plate (7) is elastic, the shielding plate (7) is made of rubber, the side of the shielding plate (7) away from the connecting plate (6) is in contact with the inner surface of the back cover (2), the shielding plate (7) can seal the through hole (3), the inner surface of the body (1) is fixedly connected to a guide rail (8), the guide rail (8) is located on the inner side of the shielding plate (7), and the shielding plate (7) is slidably connected to the guide rail (8).

2. A three-phase motor for adjusting ventilation holes according to claim 1, characterized in that: The adjustment structure (5) comprises a screw rod (9) arranged inside the rear cover (2), both ends of the screw rod (9) pass through the rear cover (2) and extend to the inside of the rear cover (2), the rear cover (2) and the screw rod (9) are movably connected via a bearing, a threaded sleeve (10) is threadedly connected to the surface of the screw rod (9), the top and bottom of the screw sleeve (10) are movably connected to a crank (11) via a pin, the side of the crank (11) away from the screw sleeve (10) is movably connected to a connecting block (12) via a pin, and the side of the connecting block (12) away from the crank (11) is fixedly connected to the inner side of the connecting plate (6).

3. A three-phase motor for adjusting ventilation holes according to claim 2, characterized in that: The front of the machine body (1) is fixedly connected with a vertical plate (13), the vertical plate (13) is located on the back of the shielding plate (7), the inner side of the vertical plate (13) is fixedly connected with a guide rod (14), the number of the guide rods (14) is two and they are located on the back of the screw rod (9), the connecting plate (6) is sleeved on the surface of the screw rod (9), and the connecting plate (6) is slidably connected with the screw rod (9).

4. A three-phase motor for adjusting ventilation holes according to claim 2, characterized in that: The right side of the screw sleeve (10) is fixedly connected with a sleeve (15), the sleeve (15) is sleeved on the surface of the screw rod (9), and the sleeve (15) and the screw rod (9) are threadedly connected.

5. A three-phase motor for adjusting ventilation holes according to claim 2, characterized in that: The right end of the screw rod (9) passes through the rear cover (2) and extends to the right side of the rear cover (2); the screw rod (9) and the rear cover (2) are movably connected via a bearing; the right end of the screw rod (9) is fixedly connected to a rotating wheel (16); and the rotating wheel (16) is located on the right side of the rear cover (2).

6. A three-phase motor for adjusting ventilation holes according to claim 1, characterized in that: The top and bottom of the inner wall of the rear cover (2) are fixedly connected to a support block (17); the outer surface of the support block (17) is in the shape of an arc; the inner side of the shielding plate (7) and the outer surface of the support block (17) are in contact with each other.

7. A three-phase motor for adjusting ventilation holes according to claim 2, characterized in that: The front of the rear cover (2) is provided with an end cover (18), the back of the end cover (18) is fixedly connected with a filter tube (19), the side of the filter tube (19) away from the end cover (18) is sleeved on the surface of the rear cover (2), the through hole (3) is located on the inner side of the filter tube (19), the filter tube (19) is made of a transverse steel wire rope and a longitudinal steel wire rope that are overlapped and bent, and an adjustment groove (20) is opened on the right side of the filter tube (19), and the adjustment groove (20) is arranged around the surface of the screw rod (9).

8. A three-phase motor for adjusting ventilation holes according to claim 7, characterized in that: A torsion block (21) is arranged on the front side of the end cover (18), and a connecting rod (22) is fixedly connected to the back side of the torsion block (21). The rear end of the connecting rod (22) passes through the end cover (18) and the rear cover (2) in sequence and extends to the interior of the rear cover (2). The connecting rod (22) and the rear cover (2) are threadedly connected, and the connecting rod (22) and the end cover (18) are movably connected.

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