Marine side thrust motor and ship driving equipment
By setting vents and ventilation channels on the stator and rotor core assembly and using heat dissipation components to accelerate airflow, the heat dissipation problem of marine side thrust motors has been solved, achieving better heat dissipation and increased motor capacity.
Patent Information
- Application Number
- CN202520030711.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-07
- Publication Date
- 2025-12-23
- Estimated Expiration
- 2035-01-07
AI Technical Summary
Existing marine thruster motors have poor heat dissipation performance and cannot achieve the expected heat dissipation effect.
Ventilation holes are provided on the core pressure plate of the stator and rotor core assembly, and ventilation channels and ventilation holes are provided inside and outside the core. Combined with heat dissipation components, the air flow inside the motor body is accelerated, and comprehensive cooling is achieved through three air channels.
It improves the heat dissipation of the motor, controls the temperature rise of the motor, and enhances the capacity and reliability of the motor.
Smart Images
Figure CN223713676U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of marine equipment technology, and more specifically, to a marine thruster motor. Furthermore, this utility model also relates to a marine drive system including the aforementioned marine thruster motor. Background Technology
[0002] Marine propulsion systems are classified into main propulsion systems and lateral thrust systems based on the direction of propulsion. Lateral thrust systems are primarily marine lateral propulsion devices; those installed at the bow of the hull are called bow thrusters, and those installed at the stern are called stern thrusters.
[0003] Generally, most ships are equipped with bow thrusters, while some also have stern thrusters. Bow thrusters are widely used as auxiliary maneuvering devices in port. Their specific applications in ship maneuvering include controlling lateral movement during berthing and unberthing, adjusting course at low speeds in waterways, and suppressing bow deflection during reversing.
[0004] Marine thruster motors, as the power unit in a ship's thrusting system, play a crucial role in power conversion, output, transformation, and transmission, and are essential for the reliable operation of the ship. Due to the long-term operation of ships in the marine or near-shore environment, and the limitations of ship load and hull space, marine thruster motors require moisture-resistant, mildew-proof, and corrosion-resistant winding insulation, simple and efficient cooling methods, compact overall structure, light weight, low vibration and noise, and high reliability. However, existing marine thruster motors have relatively poor heat dissipation performance, failing to achieve the expected cooling effect.
[0005] In conclusion, improving the heat dissipation of marine side thrust motors is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content
[0006] In view of this, the purpose of this utility model is to provide a marine side thrust motor. The iron core pressure plate of the marine side thrust motor is provided with ventilation holes, and the stator and rotor iron core assembly is provided with ventilation channels and ventilation holes. Through the heat dissipation component, cooling gas can flow in the interior of the stator and rotor iron core assembly, the air gap and the ventilation channel respectively, and can also enter the outer surface of the stator and rotor iron core assembly through the ventilation holes, thereby improving the heat dissipation effect.
[0007] Another objective of this invention is to provide a ship propulsion device that includes the aforementioned marine side thruster motor.
[0008] To achieve the above objectives, this utility model provides the following technical solution:
[0009] A marine side thruster motor, comprising:
[0010] The stator and rotor core assembly is located inside the motor body. The stator and rotor core assembly is provided with core pressure plates at both ends. The core pressure plates are provided with vent holes. The stator and rotor core assembly is provided with ventilation channels and ventilation holes inside. The vent holes are connected to the ventilation channels.
[0011] A heat dissipation component is disposed on the motor body, and the motor body is provided with a vent. The heat dissipation component is used to accelerate the air flow inside the motor body, thereby realizing heat dissipation inside the motor body.
[0012] Preferably, the stator and rotor core assembly includes a stator core and a rotor core. Both ends of the stator core and the rotor core are provided with core pressure plates. Support ribs are evenly arranged on the inner circumference of the stator core. Multiple ventilation holes are evenly distributed on the core pressure plates. Ventilation holes are provided inside the rotor core.
[0013] Preferably, the heat dissipation assembly includes a main centrifugal fan, the blades of which are straight blades capable of bidirectional rotation and blowing air, and the main centrifugal fan is used to dissipate heat from the stator and rotor core assembly.
[0014] Preferably, the motor body includes a base, a front cover, a rear cover, and a junction box assembly. The base is detachably connected to the front cover and the rear cover, and the base is provided with multiple ventilation windows.
[0015] Preferably, the motor body is further provided with an axial flow fan, which is located on the side of the stator and rotor core assembly away from the main centrifugal fan and is arranged corresponding to the ventilation hole of the rotor core.
[0016] Preferably, the two ends of the stator and rotor core assembly are a shaft extension end and a non-shaft extension end, respectively. The main centrifugal fan is located at the shaft extension end, and the shaft extension end is also provided with a front bearing assembly, which includes a deep groove ball bearing.
[0017] Preferably, the non-shaft extension end is provided with a rear bearing assembly, the rear bearing assembly including a thrust contact bearing and a deep groove ball bearing mounted in parallel, and a partition is provided between the thrust contact bearing and the deep groove ball bearing.
[0018] Preferably, the ventilation duct is divided into two parts, which are respectively disposed on the inner side of the rotor core and the stator core, and the two parts are disposed correspondingly. The width of the ventilation duct of the rotor core is 2 to 4 mm wider than the width of the ventilation duct of the stator core.
[0019] Preferably, both the stator core and the rotor core are provided with windings, and the surface of the windings is provided with an anti-corrosion layer.
[0020] A marine propulsion device includes a marine thruster motor, wherein the marine thruster motor is any one of the marine thrusters described above.
[0021] This utility model provides a marine side thruster motor, in which a stator and rotor core assembly is installed within the motor body. Under normal operating conditions, this assembly generates heat. Both ends of the stator and rotor core assembly are equipped with core pressure plates, each with ventilation holes. The stator and rotor core assembly has internal ventilation channels and ventilation holes. A heat dissipation component on the motor body accelerates the airflow within the motor body. This airflow passes through the stator and rotor core assembly and its air gap, carrying away the heat generated by the stator and rotor core and expelling it from the motor body. The ventilation holes on the stator and rotor core assembly further enhance heat dissipation. Through a total of three air channels, the internal and external surfaces of the stator and rotor core assembly are completely cooled, resulting in excellent motor temperature control and increased motor capacity. Attached Figure Description
[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.
[0023] Figure 1 A schematic diagram of the structure of the marine side thruster motor provided by this utility model;
[0024] Figure 2 A schematic diagram of the main centrifugal fan provided by this utility model;
[0025] Figure 3 This is a schematic diagram of the stator and rotor core assembly provided by this utility model.
[0026] Figure label:
[0027] 1-Front bearing assembly; 2-Main centrifugal fan; 3-Motor body; 4-Stator and rotor core assembly; 5-Core pressure plate; 6-Axial flow fan; 7-Rear bearing assembly; 8-Ventilation hole. Detailed Implementation
[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0029] The core of this utility model is to provide a marine side thrust motor. This motor uses a total of three air ducts to completely cool the internal and external parts of the stator and rotor core assembly, resulting in excellent temperature rise control and improved motor capacity.
[0030] Another core aspect of this invention is to provide a ship propulsion device that includes the aforementioned marine side thruster motor.
[0031] It should be noted that the orientation or positional relationship indicated by terms such as "upper", "lower", "front", and "rear" is based on the orientation or positional relationship shown in the accompanying drawings and is only for the purpose of facilitating the description of this application and simplifying the description. It is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.
[0032] This application provides a marine side thruster motor, comprising: a stator and rotor core assembly 4 and a heat dissipation component;
[0033] The stator and rotor core assembly 4 is located inside the motor body 3. The stator and rotor core assembly 4 is provided with core pressure plates 5 at both ends. The core pressure plates 5 are provided with vent holes. The stator and rotor core assembly 4 is provided with ventilation channels and ventilation holes 8 inside. The ventilation holes are connected to the ventilation channels.
[0034] A heat dissipation component is provided on the motor body 3. The motor body 3 has a ventilation port. The heat dissipation component is used to accelerate the airflow inside the motor body 3, thereby achieving heat dissipation inside the motor body 3.
[0035] Specifically, the motor has a vertical shaft extension and downward flange mounting structure. The stator and rotor core assembly 4 is a tubular structure, and the motor body 3 is a hollow shell. The stator and rotor core assembly 4 is housed inside the motor body 3. A transverse air gap is provided on the stator and rotor core assembly 4 for gas flow. Vertically arranged ventilation channels are provided on the outer peripheral sidewalls of the stator and rotor core assembly 4. Circumferentially arranged ventilation holes 8 are also provided on the sidewalls of the stator and rotor core assembly 4. A heat dissipation assembly is located on the lower interior side of the motor body 3. This heat dissipation assembly can extract heated gas from the motor body 3 and can also adjust the heat dissipation according to the motor's power rating. By increasing the gas flow rate, the stator and rotor core assembly 4 is cooled down through three air ducts during the gas flow process. One air duct is where the gas enters the ventilation duct through the vents on the core pressure plate 5 and is finally discharged by the heat dissipation component. The second air duct passes directly through the air gap in the middle of the stator and rotor core assembly 4 and is discharged by the heat dissipation component. The third air duct passes through the air gap channel through the ventilation holes 8 on the stator and rotor core assembly 4 and is finally discharged outside the motor body 3 by the heat dissipation component. The three air ducts, together with the heat dissipation component, can completely cool down the inside and outside of the stator and rotor core assembly 4, resulting in excellent motor temperature rise control and improved motor capacity.
[0036] Based on the above embodiments, the stator and rotor core assembly 4 includes a stator core and a rotor core. Both ends of the stator core and the rotor core are provided with core pressure plates 5. Support ribs are evenly arranged on the inner circumference of the stator core. Multiple ventilation holes are evenly distributed on the core pressure plate 5. Ventilation holes 8 are provided inside the rotor core.
[0037] Specifically, the stator core, rotor core, and air gap are fitted together to form the motor magnetic circuit. The stator core and rotor core are provided with core pressure plates 5, which are annular plates. The front and rear pressure plates and the core are welded and pressed together by circumferentially distributed support ribs. The core pressure plates 5 are provided with a total of 16 vent holes with a diameter of 25mm. Ventilation holes 8 are provided on the rotor core to increase airflow and improve heat dissipation.
[0038] Based on the above embodiments, the heat dissipation assembly includes a main centrifugal fan 2. The blades of the main centrifugal fan 2 are straight blades that can rotate in both directions to blow air. The main centrifugal fan 2 is used to dissipate heat from the stator and rotor core assembly 4.
[0039] Specifically, please refer to the attached diagram. The main centrifugal fan 2 is located inside the motor body 3 at the bottom. The main centrifugal fan 2 draws the air out of the motor body 3, improving the airflow inside the motor body 3. The main centrifugal fan 2 is a bidirectional rotating straight blade fan with 19 blades. The blades extend downwards to the root. The bottom surface of the fan blades is at an angle of 53° to the horizontal, and the lower part of the fan blades is at an angle of 100° to the fan blade support surface. The transition radius between the fan blades and the upper guide cover is R40.
[0040] Based on the above embodiments, the motor body 3 includes a base, a front cover, a rear cover and a junction box assembly. The base is detachably connected to the front cover and the rear cover, and the base is provided with multiple ventilation windows.
[0041] Specifically, the frame serves as the base of the motor body 3, and multiple ventilation windows are provided on the motor body 3. The ventilation windows allow air to circulate between the inside and outside of the motor body 3. The front cover and the rear cover are detachably connected to the frame. After the front cover and the rear cover are removed, it is convenient to install, disassemble, clean and maintain the components inside the frame. When the front cover and the rear cover are installed on the frame, they can prevent dust and moisture from falling directly onto the stator and rotor core assembly 4.
[0042] Based on the above embodiment, an axial fan 6 is also provided inside the motor body 3. The axial fan 6 is located on the side of the stator and rotor core assembly 4 away from the main centrifugal fan 2 and is corresponding to the ventilation hole 8 of the rotor core.
[0043] Specifically, ventilation holes 8 are located on the outer periphery of the rotor core. An axial fan 6 is positioned above the rotor core, working in conjunction with the main centrifugal fan 2. Cooling air enters the motor from the non-shaft extension end. Driven by the main centrifugal fan 2 at the shaft extension end and the auxiliary axial fan 6 at the non-shaft extension end, the cooling air enters the ventilation holes 8, the circumferential ventilation holes 8 on the outer side of the stator pressure plate, and the stator-rotor air gap. The cooling air entering the ventilation holes 8 passes through the segmented ventilation channels inside the rotor core, through the stator-rotor air gap, and into the segmented ventilation channels inside the stator core, providing ventilation and cooling to the inside of the motor's stator and rotor cores. Part of the cooling air passing through the air gap enters the stator core ventilation channels along with the rotor ventilation air, while some passes directly through the core into the shaft extension end. Additionally, the cooling air passing through the circumferential ventilation holes 8 on the outer side of the stator pressure plate passes directly over the outer surface of the core, working in conjunction with the rotor ventilation air and the air gap ventilation air to cool the outer surface of the stator core.
[0044] Based on the above embodiment, the two ends of the stator and rotor core assembly 4 are the shaft extension end and the non-shaft extension end, respectively. The main centrifugal fan 2 is located at the shaft extension end, and the shaft extension end is also provided with a front bearing assembly 1, which includes a deep groove ball bearing.
[0045] Specifically, the front bearing assembly 1 is equipped with a deep groove ball bearing and a mechanical seal system. The design of deep groove ball bearings is relatively simple and the manufacturing cost is low. At the same time, it is also easy to achieve high manufacturing precision. Deep groove ball bearings can withstand radial and axial loads at the same time and provide strong support force.
[0046] Based on the above embodiment, the non-shaft extension end is provided with a rear bearing assembly 7, which includes a thrust contact bearing and a deep groove ball bearing mounted in parallel, with a partition between the thrust contact bearing and the deep groove ball bearing.
[0047] Specifically, the rear bearing assembly 7 uses a thrust contact bearing and a deep groove ball bearing mounted side by side. The thrust contact bearing bears the axial force, while the deep groove ball bearing bears the radial force. A 2mm thick partition is added between the two bearing structures.
[0048] Based on the above embodiment, the ventilation duct is divided into two parts. The two ventilation ducts are respectively arranged inside the rotor core and the stator core, and the two ventilation ducts are arranged correspondingly. The width of the ventilation duct of the rotor core is 2 to 4 mm wider than the width of the ventilation duct of the stator core.
[0049] Specifically, the width of the segmented ventilation channel of the rotor core is 2-4mm wider than that of the stator core ventilation channel. The core has core pressure plates at the front and rear. The front pressure plate is sealed without ventilation holes, while the rear core pressure plate has ventilation holes with the same shape as the core laminations.
[0050] Based on the above embodiments, both the stator core and the rotor core are provided with windings, and the surface of the windings is provided with an anti-corrosion layer.
[0051] Specifically, the winding adopts a high-reliability flat copper wire forming winding, the insulation system adopts high mica reinforced insulation and vacuum pressure impregnation, and the winding ends are sprayed with moisture-resistant and mildew-proof paint to improve the service life of the equipment.
[0052] In addition to the aforementioned marine thruster motor, this utility model also provides a marine propulsion device that includes the marine thruster motor disclosed in the above embodiments. For the structure of other parts of the marine propulsion device, please refer to the prior art, which will not be repeated here.
[0053] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.
[0054] The present invention provides a detailed description of a marine side thruster motor and a marine drive system. Specific examples have been used to illustrate the principles and implementation methods of the present invention. The descriptions of these embodiments are merely for the purpose of helping to understand the method and core ideas of the present invention. It should be noted that those skilled in the art can make various improvements and modifications to the present invention without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of the present invention.
Claims
1. A marine side thruster motor, characterized in that The utility model relates to a marine side thrust motor, including: The stator-rotor core assembly (4) is arranged in the motor body (3), both ends of the stator-rotor core assembly (4) are provided with the core pressing plate (5), the core pressing plate (5) is provided with the air hole, the inside of the stator-rotor core assembly (4) is provided with the air passage and the air hole (8), the air hole is communicated with the air passage, The heat dissipation assembly is arranged on the motor body (3), the motor body (3) is provided with the air vent, and the heat dissipation assembly is used to accelerate the flow of air in the motor body (3), so that the heat dissipation in the motor body (3) is realized.
2. A marine side thruster motor according to claim 1, characterized in that The stator-rotor core assembly (4) includes a stator core and a rotor core, both ends of the stator core and the rotor core are provided with the core pressing plate (5), the inner periphery of the stator core is uniformly arranged with a support rib, the core pressing plate (5) is uniformly distributed with a plurality of air holes, and the inside of the rotor core is provided with the air hole (8).
3. A marine side thruster motor according to claim 2, characterized in that The heat dissipation assembly includes a main centrifugal fan (2), the fan blade of the main centrifugal fan (2) is a flat fan blade that can rotate in two directions to blow air, and the main centrifugal fan (2) is used to realize the heat dissipation of the stator-rotor core assembly (4).
4. A marine side thruster motor according to claim 3, characterised in that The motor body (3) includes a base, a front end cover, a rear end cover and a terminal box assembly, the base is detachably connected with the front end cover and the rear end cover, and the base is provided with a plurality of air vent windows.
5. A marine side thruster motor according to claim 4, characterized in that The motor body (3) is also provided with an axial flow fan (6), the axial flow fan (6) is arranged on the side of the stator-rotor core assembly (4) away from the main centrifugal fan (2) and is correspondingly arranged with the air hole (8) of the rotor core.
6. A marine side thruster motor according to claim 5, characterized in that Both ends of the stator-rotor core assembly (4) are shaft extension ends and non-shaft extension ends, the main centrifugal fan (2) is arranged at the shaft extension end, the shaft extension end is also provided with a front bearing assembly (1), and the front bearing assembly (1) includes a deep groove ball bearing.
7. A marine side thruster motor according to claim 6, characterized in that The non-shaft extension end is provided with a rear bearing assembly (7), the rear bearing assembly (7) includes a thrust contact bearing and a deep groove ball bearing, and a partition plate is arranged between the thrust contact bearing and the deep groove ball bearing.
8. A marine side thruster motor according to claim 7, characterised in that The air passage is divided into two parts, the two parts of the air passage are arranged on the inside of the rotor core and the stator core and correspondingly arranged, and the width of the air passage of the rotor core is 2-4 mm wider than the width of the air passage of the stator core.
9. A marine side thruster motor according to any one of claims 2 to 8, characterized in that The stator core and the rotor core are both provided with windings, and the surface of the winding is provided with a corrosion-resistant layer.
10. A marine drive apparatus comprising a marine side thrust motor, characterized by The utility model relates to a marine side thrust motor, including: The stator-rotor core assembly (4) is arranged in the motor body (3), both ends of the stator-rotor core assembly (4) are provided with the core pressing plate (5), the core pressing plate (5) is provided with the air hole, the inside of the stator-rotor core assembly (4) is provided with the air passage and the air hole (8), the air hole is communicated with the air passage, The heat dissipation assembly is arranged on the motor body (3), the motor body (3) is provided with the air vent, and the heat dissipation assembly is used to accelerate the flow of air in the motor body (3), so that the heat dissipation in the motor body (3) is realized. The stator-rotor core assembly (4) includes a stator core and a rotor core, both ends of the stator core and the rotor core are provided with the core pressing plate (5), the inner periphery of the stator core is uniformly arranged with a support rib, the core pressing plate (5) is uniformly distributed with a plurality of air holes, and the inside of the rotor core is provided with the air hole (8). The heat dissipation assembly includes a main centrifugal fan (2), the fan blade of the main centrifugal fan (2) is a flat fan blade that can rotate in two directions to blow air, and the main centrifugal fan (2) is used to realize the heat dissipation of the stator-rotor core assembly (4). The motor body (3) includes a base, a front end cover, a rear end cover and a terminal box assembly, the base is detachably connected with the front end cover and the rear end cover, and the base is provided with a plurality of air vent windows. The motor body (3) is also provided with an axial flow fan (6), the axial flow fan (6) is arranged on the side of the stator-rotor core assembly (4) away from the main centrifugal fan (2) and is correspondingly arranged with the air hole (8) of the rotor core. Both ends of the stator-rotor core assembly (4) are shaft extension ends and non-shaft extension ends, the main centrifugal fan (2) is arranged at the shaft extension end, the shaft extension end is also provided with a front bearing assembly (1), and the front bearing assembly (1) includes a deep groove ball bearing. The non-shaft extension end is provided with a rear bearing assembly (7), the rear bearing assembly (7) includes a thrust contact bearing and a deep groove ball bearing, and a partition plate is arranged between the thrust contact bearing and the deep groove ball bearing. The air passage is divided into two parts, the two parts of the air passage are arranged on the inside of the rotor core and the stator core and correspondingly arranged, and the width of the air passage of the rotor core is 2-4 mm wider than the width of the air passage of the stator core. The stator core and the rotor core are both provided with windings, and the surface of the winding is provided with a corrosion-resistant layer. The utility model relates to a marine side thrust motor, including: The stator-rotor core assembly (4) is arranged in the motor body (3), both ends of the stator-rotor core assembly (4) are provided with the core pressing plate (5), the core pressing plate (5) is provided with the air hole, the inside of the stator-rotor core assembly (4) is provided with the air passage and the air hole (8), the air hole is communicated with the air passage, The heat dissipation assembly is arranged on the motor body (3), the motor body (3) is provided with the air vent, and the heat dissipation assembly is used to accelerate the flow of air in the motor body (3), so that the heat dissipation in the motor body (3) is realized.