Marine propeller and cooling structure and hull thereof

Abstract

The utility model discloses a marine propeller and a cooling structure and a hull thereof. The cooling structure comprises a flow guide shell, an inner shell, an outer shell and a driver. The guide shells are respectively mounted at the left and right ends of the inner shell; a spiral cooling groove is formed in the outer side of the inner shell, an input channel at one end of the cooling groove communicates with the flow guide opening in the left end, and an output channel at the other end of the cooling groove communicates with the flow guide opening in the right end. The outer shell is installed on the outer side of the inner shell and covers a groove opening of the cooling groove. A driving cooling station is arranged on the inner side of the inner shell, and the driving cooling station and the cooling groove intersect at a cooling wall; and the driver is arranged at the driving cooling station. According to the scheme, the spiral cooling groove is formed in the outer side wall of the inner shell, liquid flows in through the flow guide opening of the flow guide shell at one end and then is discharged through the flow guide opening of the flow guide shell at the other end, and therefore the liquid flows through the whole inner shell, and rapid cooling of the driver is achieved; the problems that the service life is shortened and the ship propeller is burnt during use due to the fact that the ship propeller cannot be cooled in time are solved.

Description

Technical Field

[0001] The utility model relates to the field of marine propellers, in particular to a marine propeller and a cooling structure and a hull thereof. Background Art

[0002] A ship's propulsion system is an energy converter within a ship's propulsion system. It converts the power generated by the engine into thrust, overcoming resistance in the water and propelling the ship forward. Propellers must be designed for high power, high efficiency, and high thrust. High power and efficiency require high propulsion currents, while minimizing efficiency losses. High currents lead to high motor heat generation, placing high demands on the motor's heat dissipation design. Traditional propulsion systems cannot meet these requirements, resulting in frequent high-temperature alarms from excessive motor heat generation. This impacts the propulsion system's performance, shortens the motor's lifespan over time, and can even lead to burnout due to overheating. Utility Model Content

[0003] The purpose of the utility model is to propose a cooling structure for a marine propeller, which has a spiral cooling groove on the outer wall of the inner shell, and liquid flows in through the guide port of the guide shell at one end and is discharged through the guide port of the guide shell at the other end, so that the liquid flows through the entire inner shell, thereby achieving rapid cooling of the driver.

[0004] The utility model also provides a marine propeller, which uses the above cooling structure.

[0005] The utility model also provides a hull, which uses the above-mentioned marine propeller.

[0006] To achieve this purpose, the present invention adopts the following technical solutions:

[0007] A cooling structure for a marine propeller, comprising: a guide shell, an inner shell, an outer shell and a driver;

[0008] The guide shell is respectively installed at the left and right ends of the inner shell; the guide shell is provided with a guide port; the outer side of the inner shell is provided with a spiral cooling groove, the input channel at one end of the cooling groove is connected to the guide port at the left end, and the output channel at the other end of the cooling groove is connected to the guide port at the right end; the outer shell is installed on the outer side of the inner shell, covering the slot of the cooling groove; the inner side of the inner shell is provided with a driving cooling station, and the driving cooling station and the cooling groove intersect at the cooling wall; the driver is arranged at the driving cooling station.

[0009] Optimally, the guide shell is provided with a plurality of guide ports distributed in an annular shape.

[0010] Optimally, there are multiple input channels and output channels, which are distributed in a ring shape; one end of some of the input channels is connected to one of the guide ports, and one end of some of the output channels is connected to one of the guide ports.

[0011] It can be optimized to further include: an insulating sealant layer;

[0012] The insulating sealant layer is arranged on the outer side wall of the driver outside the output end and inside the driver.

[0013] Optimally, the number of spiral turns of the cooling groove is greater than 8.

[0014] Optimally, the driver is a permanent magnet brushless motor.

[0015] A marine propeller, comprising: a paddle and the above-mentioned cooling structure of the marine propeller;

[0016] The output end of the driver is connected to the paddle for driving the paddle to rotate.

[0017] Optimally, a hollow opening is provided in the middle of the guide shell, and the oar is exposed through the hollow opening.

[0018] Optimally, the outer side and the inner side of the hollow opening are transitioned through an arc surface.

[0019] A hull is provided with the above-mentioned marine propeller.

[0020] Compared with the prior art, one of the above technical solutions has the following beneficial effects:

[0021] This solution provides a cooling structure for a marine propeller, which has a spiral cooling groove on the outer wall of the inner shell. Liquid flows in through the guide port of the guide shell at one end and is discharged through the guide port of the guide shell at the other end, so that the liquid flows through the entire inner shell, achieving rapid cooling of the driver and solving the problem of marine propellers not being able to cool in time, resulting in shortened service life and burning during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a front view of one embodiment of a marine propulsion system;

[0023] Figure 2 yes Figure 1 Schematic diagram of the cross-sectional structure of AA.

[0024] in:

[0025] Guide shell 1, inner shell 2, outer shell 3, driver 4; insulating sealant layer 5; paddle 6;

[0026] The guide port 11 ; the hollow opening 12 ; the arc surface 13 ; the cooling wall 14 ; the cooling groove 21 ; the drive cooling station 22 ; the input channel 211 ; and the output channel 212 . DETAILED DESCRIPTION

[0027] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0028] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "up", "down", "left", "right", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", "inner end", "outer end", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, features defined as "first" or "second" may explicitly or implicitly include one or more such features, and are used to distinguish and describe features, without distinction of order or importance. In the description of the present invention, unless otherwise specified, "multiple" means more than two.

[0029] like Figure 1-2 , a cooling structure for a marine propeller, comprising: a guide shell 1, an inner shell 2, an outer shell 3 and a driver 4;

[0030] The guide shell 1 is respectively installed on the left and right ends of the inner shell 2; the guide shell 1 is provided with a guide port 11; the outer side of the inner shell 2 is provided with a spiral cooling groove 21, and the input channel 211 at one end of the cooling groove 21 is connected to the guide port 11 at the left end, and the output channel 212 at the other end of the cooling groove 21 is connected to the guide port 11 at the right end; the outer shell 3 is installed on the outer side of the inner shell 2, covering the notch of the cooling groove 21; the inner side of the inner shell 2 is provided with a driving cooling station 22, and the driving cooling station 22 and the cooling groove 21 intersect at the cooling wall 14; the driver 4 is arranged at the driving cooling station 22.

[0031] This solution provides a cooling structure for a marine propeller, which has a spiral cooling groove 21 on the outer wall of the inner shell 2. Liquid flows in through the guide port 11 of the guide shell 1 at one end and is discharged through the guide port 11 of the guide shell 1 at the other end, so that the liquid flows through the entire inner shell 2, achieving rapid cooling of the driver 4, and solving the problem of the marine propeller not being able to cool in time, resulting in a shortened service life and burning during use.

[0032] Specifically, the guide shells 1 are arranged in pairs, which are respectively arranged at the left and right positions of the inner shell 2; the outer side of the inner shell 2 is provided with a guide port 11, one end of the cooling groove 21 is provided with an input channel 211 connected to the left guide port 11, and the other end of the cooling groove 21 is provided with an output channel 212 connected to the right guide port 11; the outer shell 3 is then installed on the outer side of the inner shell 2, covering the notch of the cooling groove 21, so that the cooling groove 21 is sealed, and the inside and outside of the cooling groove 21 are separated to ensure that water will flow spirally along the cooling groove 21 without overflowing from the notch; and the inner side of the inner shell 2 is provided with a drive cooling station 22 for installing the driver 4. The drive cooling station 22 extends along the left and right directions of the cooling groove 21. The drive cooling station 22 and the cooling groove 21 are separated only by the cooling wall 14. Therefore, the driver 4 on the drive cooling station 22 will conduct heat to the cooling wall 14, and the liquid flowing in the cooling groove 21 can fully contact the cooling wall 14 and take away the heat from the cooling wall 14. More specifically, the marine propeller is placed in the water. When the hull moves, it drives the marine propeller forward. During the movement, the marine propeller will come into contact with the water. Figure 2 The direction of the arrow is the inflow direction of water. Under the action of water pressure, water enters from the left guide port 11 and then enters the cooling groove 21. The cooling groove 21 is spiral. The water then flows in a spiral around the outer wall of the inner shell 2 and can flow through any area of ​​the outer wall of the inner shell 2, and finally output from the right guide port 11; in this way, the temperature of the inner shell 2 remains uniform and there will be no large local temperature deviation; the drive cooling station 22 and the cooling groove 21 share the cooling wall 14, and the relative flow of water takes away the heat at the cooling wall 14, thereby cooling the inner shell 2 and its driver 4, and the cooling effect is good.

[0033] Optimally, the guide shell 1 is provided with a plurality of guide ports 11 distributed in an annular shape.

[0034] There can be multiple air guide ports 11, which are distributed in a circumferential manner. In some embodiments, when there are more air guide ports 11, the overall weight of the air guide shell 1 can be reduced, thereby making the overall marine propeller lighter. At the same time, when the air guide ports 11 are distributed in a circumferential manner, more water can be introduced, which can dissipate heat to the left and right ends of the inner shell 2 and take away the heat from the left and right ends of the inner shell 2, thereby achieving multi-directional heat dissipation of the marine propeller.

[0035] Optimally, there are multiple input channels 211 and output channels 212, which are distributed in a ring shape; one end of some input channels 211 is connected to one of the guide ports 11, and one end of some output channels 212 is connected to one of the guide ports 11.

[0036] There are multiple input channels 211 and output channels 212, which are distributed in a ring shape. One end of the input channel 211 is connected to a guide port 11, and one end of some output channels 212 is connected to a guide port 11, that is, the input channel 211 and the output channel 212 are respectively connected to different positions of the spiral structure of the cooling groove 21, and are not limited to a single guide port 11 for flowing in or out of water. This can increase the inflow of water, thereby increasing the speed at which water fills the cooling groove 21, and making the cooling effect of the cooling structure better.

[0037] It can be optimized to further include: an insulating sealant layer 5;

[0038] The insulating sealant layer 5 is arranged on the outer side wall of the driver 4 outside the output end and inside the driver 4 .

[0039] Since the cooling structure is applied to a marine propeller, the cooling structure is placed in water when in use, and the outer side of the driver 4 is mainly against the guide shell 1 and the inner shell 2. Therefore, the outer side wall of the driver 4 outside the output end may be against the guide shell 1 and the inner shell 2. The present solution preferably provides an insulating sealant layer 5 on the outer side wall of the driver 4 outside the output end, and an insulating sealant layer 5 inside the driver 4, which can improve the insulation and sealing properties of the driver 4 and reduce the degree of corrosion of the driver 4 by seawater.

[0040] Optimally, the number of spiral turns of the cooling groove 21 is greater than 8.

[0041] The number of spiral turns of the cooling groove 21 of this solution can be determined according to the length of the inner shell 2 and the cooling groove 21. In the optimal embodiment, the number of spiral turns of the cooling groove 21 is greater than 8, because too small a number of spiral turns may lead to insufficient cooling effect. The larger the number of spiral turns, the more the cooling groove 21 can allow water to flow in a spiral circle around the inner shell 2, so that water will flow at any point in the inner shell 2, and the temperature of the inner shell 2 will remain uniform, and there will be no large temperature deviation.

[0042] Optimally, the driver 4 is a permanent magnet brushless motor.

[0043] In the preferred embodiment of this solution, a permanent magnet brushless motor is used to replace the traditional three-phase asynchronous motor. Based on the advantages of the cooling structure of this solution, the use of a permanent magnet brushless motor as the propeller of the driver 4 has the advantages of simple structure, stable function, easy maintenance, high efficiency, low vibration, and quiet operation.

[0044] A marine propeller, comprising: a paddle 6 and the above-mentioned cooling structure of the marine propeller;

[0045] The output end of the driver 4 is connected to the paddle 6 for driving the paddle 6 to rotate.

[0046] The cooling structure of this solution can be used as a carrier for the paddle 6 in any marine propeller. The cooling structure is provided with a driver 4. The output end of the driver 4 in the cooling structure can drive the paddle 6 to rotate, thereby driving the hull forward.

[0047] Optimally, a hollow opening 12 is provided in the middle of the guide shell 1 , and the hollow opening 12 exposes the paddle 6 .

[0048] The rotation of the paddle 6 allows the water to flow normally through the hollow openings 12 of the guide shell 1 at both ends of the cooling structure, thereby achieving the propulsion of the hull. At the same time, when the water flows through the hollow openings 12, it can also cool the interior of the cooling structure.

[0049] Optimally, the outer side and the inner side of the hollow opening 12 are transitioned through an arc surface 13 .

[0050] The arc surface 13 is located at the transition position between the outer side and the inner side of the hollow opening 12. Seawater can be introduced into the hollow opening 12 along the arc surface 13, which can reduce the resistance of the propeller moving in the water.

[0051] A hull is provided with a marine propeller according to any of the above embodiments.

[0052] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A cooling structure for a marine propeller, characterized in that: include: Guide shell, inner shell, outer shell and driver; The guide shells are respectively installed at the left and right ends of the inner shell; The guide shell is provided with a guide port; the outer side of the inner shell is provided with a spiral cooling groove, the input channel at one end of the cooling groove is connected to the guide port at the left end, and the output channel at the other end of the cooling groove is connected to the guide port at the right end; the outer shell is installed on the outer side of the inner shell, covering the notch of the cooling groove; the inner side of the inner shell is provided with a driving cooling station, and the driving cooling station and the cooling groove intersect at the cooling wall; the driver is arranged at the driving cooling station.

2. The cooling structure of a marine propeller according to claim 1, characterized in that: The guide shell is provided with a plurality of guide ports distributed in an annular shape.

3. The cooling structure of a marine propeller according to claim 2, characterized in that: There are multiple input channels and output channels, which are distributed in a ring shape. One end of some of the input channels is connected to one of the guide ports, and one end of some of the output channels is connected to one of the guide ports.

4. The cooling structure of a marine propeller according to claim 1, characterized in that: Also includes: Insulation sealant layer; The insulating sealant layer is arranged on the outer side wall of the driver outside the output end and inside the driver.

5. The cooling structure of a marine propeller according to claim 1, characterized in that: The number of spiral turns of the cooling groove is greater than 8.

6. The cooling structure of a marine propeller according to claim 1, characterized in that: The driver is a permanent magnet brushless motor.

7. A marine propeller, characterized in that: include: A cooling structure for a propeller for a ship and a propeller according to any one of claims 1 to 6; The output end of the driver is connected to the paddle for driving the paddle to rotate.

8. A marine propeller according to claim 7, characterized in that: A hollow opening is provided in the middle of the guide shell, and the oar is exposed through the hollow opening.

9. A marine propeller according to claim 8, characterized in that: The outer side and the inner side of the hollow opening are transitioned through an arc surface.

10. A hull, characterized in that: A marine propeller according to claim 7 is provided.

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