Propeller and watercraft

Abstract

A propeller and a watercraft. The propeller (1000) is provided with an accommodating cavity (100). The accommodating cavity (100) accommodates a heat source (200) and an electronic control device (300). The temperature around the heat source (200) is higher than that around the electronic control device (300). The propeller (1000) is further provided with a condensation elimination structure (400). The condensation elimination structure (400) is used for preventing the formation of condensation in the accommodating cavity (100), or absorbing condensation to preventing the condensation from coming into contact with the electronic control device (300). The condensation elimination structure is employed to prevent the formation of condensation in the accommodating cavity, or absorb the formed condensation to prevent the condensation from coming into contact with the electronic control device, thereby avoiding damage to the electronic control device due to contact with the condensation, improving the safety of the propeller.

Description

Propeller and water area movable device TECHNICAL FIELD

[0001] The present application relates to the field of electromechanical devices, and in particular to a propeller and a water area movable device. BACKGROUND

[0002] Currently, an outboard engine is provided with a containing cavity, and an electric control device is arranged in the containing cavity to realize the electrification of the outboard engine. However, because water vapor is often mixed in the containing cavity of the outboard engine, the water vapor forms condensation when it is cooled, and the condensation contacts the electric control device, which causes the electric control device to be short-circuited and damaged, resulting in the outboard engine being unable to work.

[0003] SUMMARY

[0004] Embodiments of the present application provide a propeller and a water area movable device, which can prevent the electric control device from being damaged due to contact with condensation.

[0005] Embodiments of the present application provide a propeller, wherein the propeller is provided with a containing cavity, the containing cavity contains a heat source and an electric control device, the temperature around the heat source is higher than the temperature around the electric control device, and the propeller is further provided with a condensation elimination structure, which is used to prevent condensation from being formed in the containing cavity or to absorb the condensation to prevent the condensation from contacting the electric control device.

[0006] Embodiments of the present application provide a water area movable device, wherein the water area movable device comprises the above-described propeller.

[0007] The propeller and the water area movable device of the embodiments of the present application use the condensation elimination structure to prevent condensation from being formed in the containing cavity or to absorb the formed condensation, so as to prevent the condensation from contacting the electric control device, thereby preventing the electric control device from being damaged due to contact with the condensation, and improving the safety of the propeller. BRIEF DESCRIPTION OF DRAWINGS

[0008] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the background art, the drawings needed to be used in the embodiments of the present application or the background art will be described below.

[0009] FIG. 1 is a schematic view of a propeller according to an embodiment of the present application;

[0010] FIG. 2 is a schematic view of a propeller according to an embodiment of the present application;

[0011] FIG. 3 is an exploded schematic view of the propeller of FIG. 2;

[0012] FIG. 4 is a schematic view of a propeller according to an embodiment of the present application;

[0013] FIG. 5 is a schematic view of a propeller according to an embodiment provided by the present application;

[0014] Figure 6 is a partially cutaway schematic view of the pusher of Figure 5;

[0015] Figure 7 is an enlarged schematic view of section VI of the pusher of Figure 6;

[0016] Figure 8 is a perspective schematic view of a partition of the pusher of Figure 6;

[0017] Figure 9 is a schematic view of a pusher of another embodiment of the application;

[0018] Figure 10 is a schematic view of a pusher of another embodiment of the application;

[0019] Figure 11 is a perspective schematic view of a second partition of the pusher of Figure 10;

[0020] Figure 12 is a schematic view of a pusher of another embodiment of the application;

[0021] Figure 13 is a schematic view of a pusher of another embodiment of the application;

[0022] Figure 14 is a schematic view of a pusher of another embodiment of the application;

[0023] Figure 15 is a schematic view of a condensation collection assembly of a pusher of another embodiment of the application;

[0024] Figure 16 is another schematic view of a cooling device of the pusher of Figure 15;

[0025] Figure 17 is a rear schematic view of a pusher of another embodiment of the application;

[0026] Figure 18 is a schematic view of a moisture absorbing assembly of a pusher of another embodiment of the application;

[0027] Figure 19 is a schematic view of a pusher of another embodiment of the application;

[0028] Figure 20 is a schematic view of a pusher of another embodiment of the application;

[0029] Figure 21 is a schematic view of a cable and air-tight assembly of the pusher of Figure 20;

[0030] Figure 22 is a schematic view of a pusher of another embodiment of the application;

[0031] Figure 23 is a schematic view of a water body movable apparatus of an embodiment of the application. DETAILED DESCRIPTION

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which embodiments of the application belong. The terminology used in the description herein is for describing particular embodiments only and is not intended to be limiting of embodiments of the application. The description herein and the claims of the application and the accompanying drawings are not meant to be limiting, but are intended to be illustrative only. The use herein of the terms "including", "comprising", "having" and the like are meant to encompass the items listed thereafter open-ended. The terms "first", "second" and the like, herein do not denote any order, quantity, or importance, but rather are used to distinguish one element from another.

[0033] Reference herein to "embodiments" means that a particular feature, structure, or characteristic described in connection with an embodiment can be included in at least one embodiment of the application. The appearances of the phrase that the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily mutually exclusive of one another. It is expressly understood that the embodiments described herein are merely examples from a

[0034] In order to make the technical personnel in the art better understand the embodiments of the application, the technical solutions in the embodiments of the application will be described clearly and completely below in conjunction with the drawings of the embodiments of the application.

[0035] Please refer to FIG. 1, the application provides a propeller 1000, which is configured with a containing cavity 100, the containing cavity 100 contains a heat source 200 and an electric control device 300, the temperature around the heat source 200 is higher than the temperature around the electric control device 300, the propeller 1000 is also configured with a condensation elimination structure 400, the condensation elimination structure 400 is used to prevent the formation of condensation in the containing cavity 100, or to absorb condensation, so as to prevent the condensation from contacting the electric control device 300.

[0036] It can be understood that the propeller 1000 of the application can be installed on a water area movable device, which can be a ship. For example, it can be installed outside the ship as an outboard engine, or it can be installed on the bottom of the ship as a pod propeller 1000. The propeller 1000 of the application is intended to push the ship to move by outputting propelling power, and the installation position of the propeller 1000 is not specifically limited. The ship to which the propeller 1000 can be applied can be a yacht, a passenger ship, a bamboo raft, a kayak, etc. without specific limitation.

[0037] Since the propeller 1000 is applied to a ship, the ship runs on the water surface, that is, the propeller 1000 will inevitably face more water vapor (water vapor in the air) on the water surface. In the embodiment, the propeller 1000 can prevent the water from the outside from entering the inside of the propeller 1000 in the waterproof requirement. It can be understood that the better waterproof performance leads to the poorer gas flowability in the propeller 1000. However, because the requirement of absolute complete gas sealing cannot be met, the propeller 1000 will always mix the gas from the outside due to the assembly gap or dynamic sealing structure, and the gas from the outside will bring the water vapor into the propeller 1000, thereby causing the formation of condensation, which constitutes a danger to the propeller 1000.

[0038] The propeller 1000 of the application prevents the formation of condensation in the accommodation cavity 100 or absorbs the formed condensation by using the condensation elimination structure 400, so as to avoid the contact between the condensation and the electric control device 300, thereby preventing the electric control device 300 from being damaged due to the contact with the condensation, and improving the safety of the propeller 1000.

[0039] The propeller 1000 of the embodiment of the application is exemplified as an outboard engine. The heat source 200 of the propeller 1000 is the heat caused by energy loss when the propeller 1000 works. That is, the heat of the heat source 200 is inevitable when the propeller 1000 works. Since the propeller 1000 needs to dissipate the heat of the heat source 200 in time to avoid the aggregation of heat and prevent the local temperature in the propeller 1000 from being too high to cause the damage of some devices, the temperature difference will be formed from the high temperature of the heat source 200 to the low temperature of the cooling in the propeller 1000. After the water vapor enters the propeller 1000, the water vapor will condense to form condensation when meeting the temperature difference. That is, the greater the temperature difference in the propeller 1000, the more serious the formation of condensation. With the improvement of the power of the propeller 1000, the output of large power means that more energy loss causes the heat of the heat source 200 to be more serious, thereby causing more formation of condensation. The propeller 1000 of the application is provided with the condensation elimination structure 400, thereby maintaining the large power operation of the propeller 1000. The large power operation of the propeller 1000 of the application refers to the operating power of the propeller 1000 being at least greater than 10KW.

[0040] In the embodiment, the accommodation cavity 100 is a sealed cavity which can at least prevent water from entering, so as to avoid short circuit and damage of the electric control device 300 caused by water. The accommodation cavity 100 is formed by assembling multiple parts of the thruster 1000, and the sealing of the accommodation cavity 100 is achieved by setting a sealing structure. The accommodation cavity 100 can be formed by multiple cavities which are in communication with each other. The multiple cavities can refer to cavities distributed on different parts of the thruster 1000. Of course, the accommodation cavity 100 can also include two cavities which are not completely isolated. The two cavities are not completely isolated, which means that the two cavities are isolated by a detachable device, and the two cavities can still be in communication when the detachable device is removed.

[0041] In this embodiment, the heat source 200 and the electric control device 300 are both accommodated in the accommodation cavity 100. The heat source 200 will generate heat mainly because the heat source 200, as part of the propulsion power output of the thruster 1000, undertakes an important role of energy conversion, so there will be heat generation of the heat source 200. This means that the amount of heat generated by the heat source 200 is positively correlated with the size of the propulsion power that the thruster 1000 can output. Part of the heat emitted by the heat source 200 will be taken away with the cooling structure provided by the thruster 1000, and another part will be conducted to the surroundings of the electric control device 300 with the air in the accommodation cavity 100. As a control circuit, the electric control device 300 will be affected by the current transmission and operation of the electric control device 300 at a higher temperature, so the electric control device 300 is usually arranged at a lower temperature in the accommodation cavity 100 of the thruster 1000, or actively cooled by the cooling structure. That is, the electric control device 300 needs to be in an environment with a lower temperature than the heat source 200 to maintain a good working state, that is, the temperature around the heat source 200 is higher than the temperature around the electric control device 300. That is, a temperature difference is formed from the surroundings of the heat source 200 to the surroundings of the electric control device 300, which increases the possibility of condensation around the electric control device 300, that is, when the gas introduced into the accommodation cavity 100 contains water vapor, the possibility of condensation of the water vapor around the electric control device 300 is increased, and the possibility of the electric control device 300 contacting the condensation is also increased. The condensation elimination structure 400, whether preventing condensation from forming in the accommodation cavity 100 or absorbing condensation, ultimately prevents condensation from contacting the electric control device 300, so that the temperature difference from the heat source 200 to the electric control device 300 does not need to be suppressed, and the heat generation of the heat source 200 does not need to be suppressed to affect the efficiency of the thruster 1000, and the heat dissipation of the electric control device 300 does not need to be suppressed to affect the operation of the electric control device 300. With the treatment of condensation by the condensation elimination structure 400, the thruster 1000 can significantly improve the propulsion power, that is, without worrying about the problem of temperature difference caused by excessive heat generation of the heat source 200 due to the increase of power, and the electric control device 300 can still be in a relatively low temperature state to meet the heat dissipation demand, maintain a good working state, and maintain the normal operation of the thruster 1000.

[0042] Of course, it can be understood that, as a possible way, there can be a region in the accommodation cavity 100 that is lower in temperature than the region where the electric control device 300 is located, and this is inevitable, and more likely to be the main case of forming condensation in the accommodation cavity 100. If the temperature aggregation in the accommodation cavity 100 is to be avoided, it is inevitable to consider a region of the accommodation cavity 100 as a heat dissipation region, that is, a region that needs to dissipate heat to the lower temperature environment outside, and this region is a low temperature region in the accommodation cavity 100, which leads to the possibility that the water vapor in the accommodation cavity 100 is heated by the heat source 200 and then cooled in this region to form condensation. Although this region may be at a certain distance from the electric control device 300, it is still possible that the condensation moves to the electric control device 300 under the influence of its own gravity or vibration and shaking and contacts the electric control device 300. The condensation removal structure 400 is designed to prevent any condensation in the accommodation cavity 100 from contacting the electric control device 300, so it is also unnecessary to suppress the temperature difference from the heat source 200 to other regions outside the electric control device 300 to ensure that the thruster 1000 has better parameter conditions.

[0043] An embodiment is provided, please refer to FIG. 2, the heat source 200 includes a first motor 210 for driving the propeller 220 to rotate, and the electric control device 300 includes a driver 310 electrically connected to the first motor 210.

[0044] In this embodiment, the first motor 210 is located in the accommodation cavity 100. The first motor 210 includes a stator and a rotor, the stator is fixed to the inner wall of the accommodation cavity 100, and the rotor cooperates with the stator, the electromagnetic force of the stator and the rotor interacts with each other to realize the rotation of the rotor. The rotor drives the propeller 220 to rotate through the motor shaft. The propeller 220 is located outside the accommodation cavity 100, and the propeller 220 rotates in water to realize the output of the thruster 1000. The rotor of the first motor 210 can be directly connected to the propeller 220 through the shaft, or can be connected to the propeller 220 through the shaft and a transmission mechanism. The driver 310 is located in the accommodation cavity 100. The driver 310 includes a motor control board and a power control board electrically connected to the motor control board, the motor control board is electrically connected to the first motor 210 for controlling the speed, direction and torque of the first motor 210, and the power control board is electrically connected to the first motor 210 for controlling the power of the first motor 210. The driver 310 includes an input end 311 and an output end 312, the input end 311 is connected to the direct current from the power battery, and the output end 312 outputs three-phase alternating current to the first motor 210. The input end 311 is connected to high-voltage electricity above 96V to meet the high-power requirement of the first motor 210. The power battery can be located in the accommodation cavity 100, or can be located outside the accommodation cavity 100, or can be independent of the thruster 1000 and connected to the thruster 1000 through a current wire bundle. Of course, the driver 310 can also obtain current from other power sources such as generators, solar panels, hydrogen fuel cells, etc.

[0045] It can be understood that the connecting shaft between the first motor 210 and the propeller 220 partially extends into the accommodation cavity 100, and thus dynamic sealing is necessarily formed between the connecting shaft and the shell in which the accommodation cavity 100 is located. For example, in one possible implementation, the rotating shaft connected with the propeller 220 partially extends into the accommodation cavity 100, and an oil seal structure is used to dynamically seal the part of the rotating shaft that cooperates with the accommodation cavity 100. In the implementation in which the battery is located outside the accommodation cavity 100, the wire harness connected with the driver 310 penetrates into the accommodation cavity 100 and cooperates with the accommodation cavity 100 in a sealed manner, so as to guarantee the sealing and waterproof performance of the accommodation cavity 100.

[0046] It can be understood that the first motor 210 and the driver 310 are jointly accommodated in the accommodation cavity 100, which facilitates the connection between the first motor 210 and the driver 310 and makes the structure of the propeller 1000 more compact. The first motor 210 drives the propeller 220 to rotate and thus generates heat, and the driver 310 drives the first motor 210 to operate and thus also generates heat. However, the working temperature of the first motor 210 is higher than that of the driver 310. In order to facilitate the heat dissipation of the driver 310, the driver 310 is usually arranged close to the area of the accommodation cavity 100 where heat can be easily dissipated to the external environment, or a cooling structure is arranged to dissipate heat of the driver 310. The condensation elimination structure 400 prevents condensation from contacting the driver 310. The condensation elimination structure 400 can prevent the water vapor in the accommodation cavity 100 from forming condensation around the driver 310 or in other low-temperature areas in the accommodation cavity 100 after being heated by the heat of the first motor 210, and can also absorb the condensation formed by the water vapor in the accommodation cavity 100 after being cooled, so as to avoid the condensation from contacting the driver 310 and causing damage to the driver 310.

[0047] As one possible implementation, the first motor 210 is provided with double-winding electromagnetic coils arranged side by side, that is, the first motor 210 can be provided with a double-stator and double-rotor structure, so as to increase the power of the first motor 210 and reduce the diameter and manufacturing difficulty of the first motor 210. In this case, since the first motor 210 is provided with double-winding electromagnetic coils, the first motor 210 generates more heat during operation, and thus the temperature difference formed in the accommodation cavity 100 is larger. The condensation elimination structure 400 can eliminate the condensation in the accommodation cavity 100 from contacting the driver 310, so as to allow the power of the first motor 210 to be increased. In order to be able to drive the first motor 210 to operate, by eliminating the hidden danger of condensation through the condensation elimination structure 400, the driver 310 can be provided with double power control boards, and the double power control boards are used to control the double-winding electromagnetic coils of the first motor 210 respectively, so as to guarantee the operation of the driver 310 and increase the operating power of the first motor 210.

[0048] In the embodiment, the accommodation cavity 100 has a pod area 110 located at the underwater part of the propeller 1000, and the first motor 210 is located in the pod area 110. When the propeller 1000 outputs propelling power, the propeller 1000 needs to lower the propeller 220 into the water, and the propeller 1000 must have a part located underwater. Therefore, the propeller 1000 has an underwater part, and the pod area 110 is the inner cavity of the underwater part. The first motor 210 is located in the pod area 110, and the heat generated by the first motor 210 when operating can be well dissipated to the water outside through the pod area 110, achieving rapid cooling of the first motor 210. The part of the propeller 1000 that wraps the first motor 210 underwater can be understood as a cooling mechanism for cooling the first motor 210, so as to avoid the aggregation of all the heat of the first motor 210 in the accommodation cavity 100.

[0049] In the embodiment, the heat source 200 includes a speed reducer 230 connected to the first motor 210 and the propeller 220. The speed reducer 230 includes a plurality of continuously meshing gears. The speed reducer 230 can reduce the speed of the torque output by the first motor 210 and increase the torque output to the propeller 220, so as to improve the propelling power of the propeller 220, thereby improving the power of the propeller 1000. When the first motor 210 operates, the friction between the plurality of gears will cause heat generation, resulting in an increase in the temperature of the speed reducer 230. In order to avoid the temperature of the speed reducer 230 being too high and causing the speed reducer 230 to fail, a heat-conducting medium is arranged in the pod area 110 to conduct the heat of the speed reducer 230 to the shell wrapping the speed reducer 230, and the shell further conducts the heat to the water outside. The heat-conducting medium can be heat-conducting oil, which can also play a lubricating role for the speed reducer 230. Although part of the heat of the speed reducer 230 is dissipated to the water outside through the heat-conducting medium to achieve cooling, part of the heat will still be conducted to other areas of the accommodation cavity 100 located in the pod area 110, and the condensation elimination structure 400 can eliminate the condensation formed thereby, so as to reduce the safety failure rate of the electric control device 300 caused by the temperature rise of the speed reducer 230.

[0050] In the embodiment, the accommodation cavity 100 has a machine head area 120 located at the above-water part of the propeller 1000, the machine head area 120 accommodates a second motor 320, the second motor 320 is used to drive the propeller 1000 to turn, and the electric control device 300 includes a turning controller 330 located in the machine head area 120, and the turning controller 330 is electrically connected to the second motor 320.

[0051] In the embodiment, the head region 120 is located at the top of the propeller 1000, and the driver 310 is located in the head region 120, which is convenient for disassembling and maintaining the driver 310, and is also convenient for connecting the battery and the first motor 210 located in the gondola region 110. Of course, in other embodiments, the driver 310 can also be located between the head region 120 and the gondola region 110, or the driver 310 is completely located in the gondola region 110.

[0052] In the embodiment, the propeller 1000 is installed on the transom of the hull 2000, and the propeller 1000 is provided with a steering shaft 321, and the propeller 1000 is steered relative to the hull 2000 through the steering shaft 321. The second motor 320 is a steering motor, and the second motor 320 outputs a steering torque to the steering shaft 321 to realize the steering of the propeller 1000. It can be understood that a steering reduction mechanism 322 can also be arranged between the second motor 320 and the steering shaft 321 to improve the steering torque of the second motor 320. The second motor 320 is located in the receiving cavity 100, which is convenient for protecting the second motor 320 and electrically connecting the second motor 320 with the steering controller 330, and reducing the wire harness between the second motor 320 and the steering controller 330. The working voltage of the steering controller 330 is low voltage, for example, the steering controller 330 can be connected to 6V, 12V, 18V, 24V voltage. The steering controller 330 is fixed on the inner wall of the head region 120 through the support. The condensation elimination structure 400 prevents condensation from contacting the steering controller 330, ensures the safety of the steering controller 330, and maintains the effective steering function of the propeller 1000.

[0053] In the embodiment, the propeller 1000 is provided with a third motor 350 for driving the propeller 1000 to lift, and the electric control device 300 includes a lifting controller 370 located in the head region 120, and the lifting controller 370 is electrically connected with the third motor 350.

[0054] In the embodiment, the thruster 1000 is provided with a heave-up clamp 360, which comprises a fixed clamp 361 and a rotating bracket 362. The rotating bracket 362 is rotatable about the heave-up shaft 363 relative to the fixed clamp 361. The steering shaft 321 of the thruster 1000 is connected to the rotating bracket 362 to realize relative steering of the thruster 1000 relative to the ship body 2000. A heave-up transmission mechanism is further arranged between the fixed clamp 361 and the rotating bracket 362. The third motor 350 outputs power to the heave-up transmission mechanism to drive the rotating bracket 362 to rotate about the heave-up shaft 363 relative to the ship body 2000. The heave-up clamp 360 is located outside the accommodation cavity 100 to facilitate heave-up movement of the thruster 1000 relative to the ship body 2000. The third motor 350 is located outside the accommodation cavity 100 to facilitate output of power to the heave-up transmission mechanism. The heave-up transmission mechanism can comprise a telescopic rod, or a worm gear transmission mechanism, or a screw rod and nut transmission mechanism. The heave-up controller 370 is electrically connected to the third motor 350 to control the output power, steering, and rotation speed of the third motor 350, so as to realize control of the heave-up direction and heave-up speed of the thruster 1000. Of course, in the embodiment, the heave-up actuator of the thruster 1000 can also be an electro-hydraulic heave-up, that is, the heave-up actuator comprises a motor and a hydraulic cylinder to output heave-up power.

[0055] In the embodiment, the heave-up controller 370 is close to the steering controller 330, which facilitates wiring layout of a low-voltage power supply connected to the heave-up controller 370 and the steering controller 330. The heave-up controller 370 is connected to a low-voltage power supply, for example, the steering controller 330 can be connected to a 6V, 12V, 18V, or 24V power supply. The heave-up controller 370 can be fixed on the same bracket as the steering controller 330. The close arrangement of the steering controller 330 and the heave-up controller 370 facilitates the condensation removal structure 400 to simultaneously prevent condensation from contacting the steering controller 330 and the heave-up controller 370, thereby maintaining the steering and heave-up functions of the thruster 1000.

[0056] An embodiment is provided, in which the heave-up controller 370 and the steering controller 330 are stacked together, which facilitates separate disassembly and maintenance of the heave-up controller 370 and the steering controller 330. The heave-up controller 370 and the steering controller 330 can be respectively fixed on opposite sides of a bracket.

[0057] Another embodiment is provided, in which the heave-up controller 370 and the steering controller 330 are integrated together. The heave-up controller 370 and the steering controller 330 are integrated on the same circuit board, thereby reducing manufacturing cost and compressing the volume of the thruster 1000.

[0058] In the embodiment, the electric control device 300 comprises a central controller 380 responsible for processing the interaction control of the thruster 1000 and external devices. The central controller 380 is electrically connected with the heave controller 370, the steering controller 330 and the driver 310, and is configured to acquire the feedback signals collected by the heave controller 370, the steering controller 330 and the driver 310 to feed back the heave, steering and propulsion information of the thruster 1000 to an external interaction system, so that a user can control the thruster 1000 to operate based on the interaction system. The interaction system comprises but is not limited to a display screen, a near handle, a remote throttle, a side bank throttle and the like. The central controller 380 is electrically connected with the interaction system to realize communication with the interaction system. The central controller 380 is also electrically connected with a battery management system to realize communication with the battery management system. The central controller 380 is also responsible for communication with a cloud server, so as to realize uploading of operation data of the thruster 1000, the battery and the interaction system to the cloud server and downloading of historical data from the cloud server for analysis and processing. The condensation elimination structure 400 can prevent condensation from contacting the central controller 380, so as to guarantee normal operation of the central controller 380, thereby realizing effective system management of the thruster 1000, the interaction system and the battery.

[0059] In the embodiment, referring to FIGS. 2 and 3, the accommodation cavity 100 has a top region away from the heat source 200, and the central controller 380 is located in the top region. The top region is provided with a closed box, and the central controller 380 is located in the closed box. Specifically, the thruster 1000 is provided with a machine cover 1100 covering the top region to seal the top region. The machine cover 1100 is internally provided with a groove 1101, and the central controller 380 is accommodated in the groove 1101. The thruster 1000 further comprises a partition plate 1102 sealingly matched with the machine cover 1100 in the accommodation cavity 100. The partition plate 1102 seals the groove 1101, so that the partition plate 1102 and the machine cover 1100 form a closed box, and the central controller 380 is located in the isolated region. Since the central controller 380 is easily disturbed and has high waterproof requirements, locating the central controller 380 in the isolated region can further guarantee the safety of the central controller 380.

[0060] In this embodiment, referring to FIG. 3 and FIG. 4, the accommodation cavity 100 is a sealed cavity, and the propeller 1000 is provided with a valve 1200 communicating with the accommodation cavity 100. The valve 1200 is a waterproof and breathable valve, which allows external gas to enter and exit the accommodation cavity 100, and prevents external water from entering the accommodation cavity 100. The sealed cavity is intended to be a sealed cavity that can prevent water from entering, and is not an absolutely airtight cavity. That is, the accommodation cavity 100 can prevent water from entering but cannot prevent gas from entering and exiting due to the assembly gap of each part of the propeller 1000. In this embodiment, it is not intended that the accommodation cavity 100 be absolutely airtight, but the valve 1200 is provided to achieve the effect of allowing the accommodation cavity 100 to breathe. It can be understood that, based on the heat source 200 being accommodated in the accommodation cavity 100, the heat source 200 emits heat when it is in operation, so that the heat source 200 heats the air temperature in the accommodation cavity 100, increases the air pressure in the accommodation cavity 100, and the gas in the accommodation cavity 100 is exhaled from the valve 1200 to achieve pressure relief in the accommodation cavity 100, and to protect the inside of the accommodation cavity 100. When the heat source 200 stops working, the temperature in the accommodation cavity 100 decreases, and the air pressure in the accommodation cavity 100 decreases, so that gas is sucked in through the valve 1200 to maintain normal air pressure in the accommodation cavity 100. It can be understood that the baffle 1102 is intended to isolate the electromagnetic signal interference to the central controller 380 and isolate most of the water that may exist from contacting the central controller 380. The baffle 1102 does not isolate the flow of gas, and is intended to ensure that the valve 1200 can breathe the gas in the accommodation cavity 100 to release the air pressure increase caused by the heat of the heat source 200.

[0061] Further, the valve 1200 is opened in the top side wall of the propeller 1000 away from the windward side.

[0062] In this embodiment, the propeller 1000 has a windward side and a tail side away from the windward side. The windward side is the side of the propeller 1000 facing the wind resistance when the propeller 1000 advances the hull 2000. The tail side does not face the wind resistance. Both the windward side and the tail side are located at the nose 1300 of the propeller 1000. The valve 1200 is arranged at the tail side 1002 to avoid the valve 1200 from absorbing unnecessary air flow into the accommodation cavity 100. The valve 1200 is arranged at the top end of the tail side 1002 to facilitate disassembly and maintenance of the valve 1200.

[0063] It can be understood that the valve 1200 allows the accommodation cavity 100 to breathe gas, so as to maintain the air pressure in the accommodation cavity 100 stable, thereby maintaining the normal work of the device in the accommodation cavity 100. In the case that the gas inhaled by the valve 1200 inevitably contains water vapor, the condensation elimination structure 400 can prevent the formation of condensation in the accommodation cavity 100, or can eliminate the condensation formed in the accommodation cavity 100, thereby allowing the valve 1200 to maintain the normal function of breathing gas, and can guarantee the safety of the electronic control device 300 in the accommodation cavity 100, and guarantee the normal work of the heat source 200 in the accommodation cavity 100, and effectively output power.

[0064] In one embodiment, referring to FIG. 4, the condensation elimination structure 400 includes a partition 410, which separates the electronic control device 300 from the heat source 200, so as to prevent the heat source 200 from heating the electronic control device 300 and the water vapor around it, causing the water vapor to condense after being heated.

[0065] In this embodiment, the partition 410 is arranged in the accommodation cavity 100. The partition 410 separates the accommodation cavity 100 into two cavities, and the electronic control device 300 and the heat source 200 are accommodated in the two cavities respectively. The gas in the cavity where the heat source 200 is located cannot pass through the partition 410 to the cavity where the electronic control device 300 is located, so the heat of the heat source 200 cannot be brought into the cavity where the electronic control device 300 is located, and the water vapor in the cavity where the electronic control device 300 is located cannot be heated and then condensed after being cooled. That is, the partition 410 isolates the gas flow between the cavity where the heat source 200 is located and the cavity where the electronic control device 300 is located, so that the heat of the heat source 200 cannot be conducted to the surrounding of the electronic control device 300 through the gas, and the water vapor in the gas around the electronic control device 300 cannot be heated, so that the water vapor cannot be condensed after being heated and then cooled, thereby eliminating the condensation in the cavity where the electronic control device 300 is located, and guaranteeing the safety of the electronic control device 300. In this embodiment, the elimination of condensation does not mean that there is no condensation, but means that the condensation that constitutes a contact danger to the electronic control device 300 is eliminated, that is, the amount of condensation is reduced until it cannot constitute a contact short circuit danger to the electronic control device 300.

[0066] Further, referring to FIG. 5, the accommodation cavity 100 is a sealed cavity, and the accommodation cavity 100 has a pod area 110 located in the underwater part of the propeller 1000 and a nose area 120 located in the water surface part, the heat source 200 is located in the pod area 110, the electronic control device 300 is located in the nose area 120, and the partition 410 separates the pod area 110 and the nose area 120 into two independent sealed areas.

[0067] In this embodiment, the propeller 1000 includes a head 1300, a conduit 1400 connecting the head 1300, and a pod 1500 connecting the conduit 1400. The mechanism area is arranged in the head 1300, and the pod area 110 is arranged in the pod 1500. Generally, the head 1300 is located on the water, and the pod 1500 is located underwater. The head 1300 is used to connect the hull 2000 to transmit the propelling force to the hull 2000. The pod 1500 outputs propelling power underwater. The heat source 200 is located in the pod area 110, and the heat generated by the heat source 200 can be quickly dissipated to the outside water through the shell of the pod 1500, avoiding the accumulation of heat in the pod area 110 causing the failure of the propeller 1000. The electric control device 300 is located in the head area 120 away from the water, thereby avoiding the risk of the electric control device 300 contacting the water. Even in the case of the pod 1500 being damaged by accidental impact and water entering, the water in the pod area 110 will not reach the head area 120, and the electric control device 300 in the head area 120 will not be short-circuited by the water, and the electric control device 300 can still maintain normal operation, such as prompting the user of the failure, automatically powering off, and maintaining normal control of the water device. The partition 410 can be arranged in the conduit 1400, or arranged at the position where the conduit 1400 connects the head 1300, or arranged at the position where the conduit 1400 connects the pod 1500. In this embodiment, the partition 410 is intended to separate the two cavities where the heat source 200 and the electric control device 300 are located, and the specific position of the partition 410 in the propeller 1000 is not limited to the above possible implementation manners. Of course, in other embodiments, the propeller 1000 can only include the head 1300 and the pod 1500, the pod 1500 is directly connected to the head 1300, and the partition 410 is located at the position where the pod 1500 is connected to the head 1300.

[0068] In the embodiment of FIG. 5, the heat source 200 includes a first motor 210, the electric control device 300 includes a driver 310 electrically connected to the first motor 210, the driver 310 is connected to the first motor 210 through a conductive member 500, and the partition 410 is sealingly matched with the conductive member 500. It can be understood that the partition 410 needs to be sealingly matched with the inner wall of the accommodation cavity 100, and also needs to be sealingly matched with the conductive member 500. The partition 410 is sealingly matched with the conductive member 500 to meet the requirement that the conductive member 500 can pass through the partition 410, and the first motor 210 and the driver 310 can conduct current to each other.

[0069] Please refer to FIG. 5, FIG. 6 and FIG. 7, in one embodiment, the propeller 1000 comprises an upper shell 700 and a lower shell 600 fixed with the upper shell 700, the nose area 120 is formed in the upper shell 700, the gondola area 110 is formed in the lower shell 600, and the partition 410 is connected near the joint of the upper shell 700 and the lower shell 600.

[0070] In this embodiment, the upper shell 700 and the lower shell 600 are sealingly connected to avoid water seepage between the upper shell 700 and the lower shell 600. Specifically, a part of the lower shell 600 can extend into the upper shell 700 for sealing cooperation, or a part of the upper shell 700 can extend into the lower shell 600 for sealing cooperation. The fixed connection between the upper shell 700 and the lower shell 600 can be that the flanges of the upper shell 700 and the lower shell 600 are locked and fixed by bolts, and of course, the locking and fixing can also be by pins. The sealing cooperation between the upper shell 700 and the lower shell 600 can be by using a sealing rubber ring. As a preferred embodiment, the sealing rubber ring is arranged between the fastening cooperation surfaces of the flanges of the upper shell 700 and the lower shell 600 to enhance the elastic deformation degree of the sealing rubber ring and increase the sealing performance.

[0071] It can be understood that the partition 410 separates the gondola area 110 and the nose area 120, and it is not absolute that the gondola area 110 and the nose area 120 cannot ventilate. When the first motor 210 has a large temperature rise and the gondola area 110 has a large gas pressure, the gas pressure will break through the sealing pressure of the partition 410, and the gas will leak from the tiny gap between the partition element and the inner wall of the accommodation cavity 100 or the tiny gap of the conductive wire bundle, so that part of the gas slowly leaks to the nose area 120, thereby ensuring the pressure relief in the gondola area 110. Due to the slow leakage of the gas to the nose area 120, the temperature rise speed of the nose area 120 is slowed down, and the temperature rise speed of the nose area 120 will not exceed the heat dissipation and cooling speed. The moisture in the nose area 120 can reduce the situation of condensation after rapid temperature rise and then cooling, so the valve 1200 on the nose 1300 can still maintain the gas breathing in the accommodation cavity 100 and keep the normal gas pressure, but the nose area 120 reduces the condensation formation, thereby ensuring the safety of the electronic control device 300.

[0072] As a possible way, the partition 410 can be located at the bottom of the upper shell 700 and close to the part of the lower shell 600 extending into the upper shell 700. When the lower shell 600 and the upper shell 700 are assembled, it is convenient to first assemble the partition 410 into the upper shell 700, and then assemble the end of the lower shell 600 into the upper shell 700. Of course, in another possible way, the partition 410 can be located at the top of the lower shell 600 and close to the part of the upper shell 700 extending into the lower shell 600.

[0073] Specifically, the lower housing 600 is provided with a pod housing 610 and a lower conduit 620 for fixing the pod housing 610, the upper housing 700 is provided with a nose housing 710 and an upper conduit 720 for fixing the nose housing 710, the lower conduit 620 is sealingly connected with the upper conduit 720, the partition 410 is located in the lower conduit 620 or the upper conduit 720 and sealingly cooperates with the inner wall of the lower conduit 620 or the upper conduit 720, the conductive member 500 is provided with a wire harness 530, and the partition 410 is provided with a wire harness hole 411 for sealingly cooperating with the wire harness 530. The lower housing 600 is integrally formed with the lower conduit 620 to reduce assembly gaps and reduce water leakage positions of the accommodation cavity 100. Since the upper housing 700 is located on water and is less likely to contact water, in order to reduce manufacturing costs, the nose housing 710 and the upper conduit 720 can be sealingly assembled and connected. One end of the upper conduit 720 is fastened to the nose housing 710 and sealingly cooperates with the nose housing 710 to maintain the sealing of the nose area 120. The other end of the upper conduit 720 is fastened to and sealingly cooperates with the end of the lower conduit 620 away from the pod housing 610. The cross-sectional shape of the lower conduit 620 and the upper conduit 720 is similar, both being similar to a wedge shape to reduce the water resistance of the lower conduit 620 and the upper conduit 720.

[0074] In the present embodiment, the first motor 210 is located in the pod housing 610, and the driver 310 is located in the nose housing 710. The wire harness 530 connecting the driver 310 and the first motor 210 passes through the upper conduit 720 and the lower conduit 620. The length of the upper conduit 720 is greater than the length of the lower conduit 620. The bottom end of the upper conduit 720 is provided with a wave suppression plate 721 protruding from one side of the upper conduit 720. The wave suppression plate 721 is used to reduce the wave-making resistance of the propeller 1000. Of course, in other embodiments, the wave suppression plate 721 can also be provided at the top end of the lower conduit 620. The length of the upper conduit 720 is less than the length of the lower conduit 620. The upper conduit 720 can also be integrally formed with the nose housing 710. In some possible embodiments, a conduit can also be provided between the nose housing 710 and the pod housing 610.

[0075] In this embodiment, the end of the lower conduit 620 is provided with a boss 621 extending into the upper conduit 720, at least one sealing ring is arranged between the outer circumferential wall of the boss 621 and the inner circumferential wall of the upper conduit 720, the boss 621 is provided with a wire hole 622, and the protruding direction of the boss 621 is parallel to the length direction of the lower conduit 620. The protruding height of the boss 621 is determined according to the requirement of assembling at least one sealing ring, so as to increase the sealing performance between the lower conduit 620 and the upper conduit 720, and of course, at least two sealing rings can also be assembled on the circumferential side of the boss 621. The cross-sectional shape of the boss 621 is similar to the cross-sectional shape of the upper conduit 720, and a wedge shape is adopted, so as to increase the cross section of the boss 621, and allow enough wire harness 530 to pass through the boss 621. The wire hole 622 can be one or more in number. For example, the boss 621 is provided with one wire hole 622, and the wire hole 622 allows the entire wire harness 530 to pass through. The boss 621 is provided with a plurality of wire holes 622, and the plurality of wire holes 622 allow a plurality of cables of the wire harness 530 to pass through respectively. The wire hole 622 is in communication with the inner cavity of the lower conduit 620, and the inner cavity of the lower conduit 620 is in communication with the inner cavity of the pod shell 610, so as to realize the assembly of one end of the wire harness 530 to the pod area 110.

[0076] In this embodiment, the bottom end of the upper conduit 720 is provided with a mounting groove 1101 assembled with the boss 621, and the inner circumferential wall of the mounting groove 1101 is in clearance fit with the outer circumferential wall of the boss 621. At least two sealing rings seal the assembly clearance between the boss 621 and the mounting groove 1101. The mounting groove 1101 is in communication with the inner cavity of the upper conduit 720, so as to guide the wire harness 530 to pass through the upper conduit 720. The depth of the mounting groove 1101 is at least greater than the height of the boss 621, and part of the partition piece 410 is allowed to be assembled into the mounting groove 1101, so as to realize the stable limiting of the partition piece 410.

[0077] Specifically, referring to FIG. 6, FIG. 7 and FIG. 8, the installation groove 1101 forms a limiting platform 722 away from the bottom of the lower duct 620. The upper duct 720 is provided with a sealing hole 523 communicating with the installation groove 1101, and the sealing hole 523 communicates with the inner cavity of the upper duct 720. The upper duct 720 is provided with a sealing hole 523 extending to the limiting platform 722. The partition 410 is provided with a column 412 fitted with the sealing hole 523, and a limiting flange 413 is arranged around the column 412. The limiting flange 413 is located in the groove 1101, and the boss 621 of the lower duct 620 abuts against the end of the column 412, so that the limiting flange 413 abuts against the limiting platform 722, thereby achieving stable limiting of the partition 410. The column 412 and the sealing hole 523 are sealingly fitted with at least two sealing rings, so as to seal the assembly gap between the column 412 and the sealing hole 523 by means of the sealing rings, thereby achieving sealing fitting of a part of the partition 410 with the sealing hole 523. The limiting flange 413 and the limiting platform 722 abut against each other, so as to achieve abutment of another part of the partition 410 against the limiting platform 722. The column 412 and the sealing hole 523 of the upper duct 720 are sealingly fitted, thereby achieving sealing of the partition 410 to block the path of the head region 120 communicating with the pod region 110, and achieving separation of the head region 120 and the pod region 110 by the partition 410.

[0078] More specifically, the wire harness hole 411 of the partition 410 includes six AC wire holes and one signal wire hole. The six AC wire holes are divided into two groups of three-phase AC wire holes, which are used to cooperate with two groups of three-phase AC wires. The two groups of three-phase AC wires are electrically connected with two groups of stator windings of the first motor 210, and are connected with the output end 312 of the driver 310. The one signal wire hole is used to connect with the control wire connected with the driver 310. The inner walls of the six AC wire holes and the one signal wire hole are provided with sealing rings, so as to achieve sealing fitting of the wire harness hole 411 with the wire harness 530, so as to prevent the wire harness 530 and the partition 410 from leaking hot air to the head region 120, and to achieve complete separation of the pod region 110 and the head region 120 by the partition 410.

[0079] Further, please continue to refer to FIG. 6, the upper conduit 720 is further provided with a heat conduction cavity 524 which is isolated from the accommodation cavity 100, the heat conduction cavity 524 is provided with a heat conduction pipe 425 which is connected to the driver 310, the lower conduit 620 is provided with a cooling liquid cavity 624 which is isolated from the accommodation cavity 100, and is provided with an inlet and outlet port 6240 which is in communication with the cooling liquid cavity 624, the inlet and outlet port 6240 is in sealed connection with the heat conduction pipe 425, the heat of the driver 310 is taken away by the cooling liquid in the heat conduction pipe 425 to the cooling liquid cavity 624, and is exchanged with the external water at the lower conduit 620. The upper conduit 720 is provided with a cooling liquid flow channel which can be communicated to the head cavity and the heat conduction cavity 524, the head cavity is arranged in the head shell 710. The driver 310 is fixed to the bottom of the head cavity and is in sealed butt joint with the cooling liquid flow channel, so as to transmit the cooling liquid between the driver 310 and the cooling liquid flow channel. The heat conduction pipe 425 is in communication with the cooling liquid flow channel in the heat conduction cavity 524, and can transmit the cooling liquid through the cooling liquid flow channel. The inlet and outlet port 6240 of the lower conduit 620 is arranged on the cover plate 623 and is separated from the boss 621. The inlet and outlet port 6240 transmits the cooling liquid through the heat conduction pipe 425. The cooling liquid cavity 624 transmits the cooling liquid through the inlet and outlet port 6240. The cooling liquid cavity 624 is located in the lower conduit 620, so that the cooling liquid in the cooling liquid cavity 624 can exchange heat with the external water through the lower conduit 620, and the heat of the driver 310 is transmitted to the water in the peripheral environment of the lower conduit 620 through the cooling liquid, so as to realize the cooling and heat dissipation of the driver 310.

[0080] Please refer to FIG. 9, in another embodiment, which is substantially the same as the embodiment of FIG. 6, the difference is that the partition 410 is close to the driver 310, and the driver 310 is located at the bottom of the upper shell 700, so as to shorten the distance between the driver 310 and the gondola area 110. The lower shell 600 is provided with a gondola shell 610 and a conduit 1400 which fixes the gondola shell 610, the end of the conduit 1400 is in sealed connection with the upper shell 700, the partition 410 is located at the end of the conduit 1400, the conductive member 500 is provided with a busbar 540 which is electrically connected to the driver 310, the busbar 540 is integrated with the partition 410, the driver 310 abuts against the partition 410, and the conductive member 500 is further provided with a wire harness 530 which passes through the conduit 1400 and is connected to the busbar 540.

[0081] Specifically, the upper shell 700 comprises a nose shell 710, which is sealingly connected with the end of the duct 1400 away from the pod shell 610. The driver 310 is located in the nose shell 710. The busbar 540 is arranged at the output end 312 of the driver 310, and the busbar 540 is arranged with a plurality of conductive terminals connected with the wire harness 530. The plurality of conductive terminals pass through the partition 410. The partition 410 is sealingly fitted with the inner wall of the duct 1400, and is integrally formed with the plurality of conductive terminals, so that the partition 410 and the busbar 540 can be connected with the driver 310 into a module first, and then the module is assembled into the bottom of the nose shell 710, and the partition 410 seals the bottom of the nose shell 710. The wire harness 530 of the conductive member 500 is connected with the part of the busbar 540 passing through the partition 410, and is connected to the first motor 210 in the pod shell 610 through the duct 1400.

[0082] Please refer to FIG. 10 and FIG. 11, another embodiment is provided, which is substantially the same as the embodiment, except that the driver 310 is located in the underwater part of the propeller 1000, so that the driver 310 can be quickly cooled. Specifically, the accommodation cavity 100 is a sealed cavity, the accommodation cavity 100 has a pod area 110 located in the underwater part of the propeller 1000, a nose area 120 located in the water surface part, and a duct area 130 located between the pod area 110 and the nose area 120, the heat source 200 is located in the pod area 110, part of the electric control device 300 is located in the nose area 120, and the other part is located in the duct area 130, the partition 410 separates the pod area 110, the duct area 130 and the nose area 120 into three independent sealed areas.

[0083] The electric control device 300 is arranged in different parts in the accommodation cavity 100 according to the need, so as to reasonably design the cable layout in the accommodation cavity 100. Part of the electric control device 300 is arranged in the duct region 130, so as to quickly cool part of the electric control device 300 by using the ambient water outside the duct region 130, avoid the part of the electric control device 300 from being damaged due to overheat, and also facilitate the electric connection of the part of the electric control device 300 to the heat source 200, so as to control the operation of the heat source 200. Another part of the electric control device 300 is arranged in the head region 120, so as to keep the part away from water, prevent the part from contacting water, ensure safety, and facilitate the disassembly and maintenance of the part in the position of the head 1300. The partition 410 divides the gondola region 110, the duct region 130 and the head region 120 into three independent sealed regions, so that the heat dissipated by the heat source 200 in the gondola region 110 is isolated from the duct region 130 and the head region 120, that is, the hot air in the gondola region 110 cannot enter the duct region 130 and the head region 120, so as to prevent the water vapor in the duct region 130 and the head region 120 from being heated and then condensed due to cold. Since the duct region 130 is close to the gondola region 110, part of the heat in the gondola region 110 will be conducted to the duct region 130 through the shell of the propeller 1000 and part of the partition 410, so that the temperature of the duct region 130 is likely to rise. In the case of temperature rise in the duct region 130, the temperature of the head region 120 will further rise. The gondola region 110, the duct region 130 and the head region 120 are divided into three sealed cavities by the partition 410, so as to prevent the hot air from flowing in the duct region 130 and the head region 120 to cause large temperature difference, thereby preventing the formation of condensation in the duct region 130 and the head region 120.

[0084] Specifically, the partition 410 includes a first partition element 414 and a second partition element 415. The first partition element 414 separates the gondola region 110 and the duct region 130, and the second partition element 415 separates the duct region 130 and the head region 120. The first partition element 414 prevents the gas in the gondola region 110 from flowing into the duct region 130, and the second partition element 415 prevents the gas in the duct region 130 from flowing into the head region 120, so as to prevent the heat of the heat source 200 in the gondola region 110 from being conducted to the duct region 130 and then to the head region 120.

[0085] In the embodiment, the heating source 200 comprises a first motor 210, the electric control device 300 comprises a driver 310 electrically connected to the first motor 210, the driver 310 is located in the conduit area 130 and is connected to the first motor 210 through a first conductive member 501, the first conductive member 501 is sealingly matched with the first partition element 414, the driver 310 is electrically connected to the battery through a second conductive member 502, and the second conductive member 502 is sealingly matched with the second partition element 415.

[0086] The first motor 210 is used to convert electric energy into propulsion power. The driver 310 controls the operation of the first motor 210. The driver 310 is located in the conduit area 130, which can reduce the length of the wire harness between the driver 310 and the first motor 210, improve the accuracy of the driver 310 controlling the first motor 210, and facilitate the driver 310 to use the underwater environment for rapid heat dissipation. The first conductive member 501 is similar to the conductive member 500 of the illustrated embodiment, and the first conductive member 501 can be sealingly matched after being assembled with the first partition element 414 or can be integrally formed. The input end 311 of the driver 310 needs to be connected to a direct current wire harness and a signal control line, that is, the second conductive member 502 includes a direct current wire harness and a signal control line. The direct current wire harness passes through the second partition element 415 to connect the battery, and the signal control line passes through the second partition element 415 to connect the central controller 380 and the interactive control device. The battery and the central controller 380 can be located in the head area 120 or outside the propeller 1000. In the embodiment, the battery is located outside the propeller 1000, and the central controller 380 is located in the head area 120. The sealing matching mode of the second conductive member 502 and the second partition element 415 can adopt the sealing matching mode of the conductive member 500 and the partition element 410 of the illustrated embodiment. The driver 310 and the central controller 380 are separated into two different areas, which facilitates to reduce the electromagnetic influence of the driver 310 on the central controller 380. Since the driver 310 is located in the conduit area 130 and can use the water in the environment for heat dissipation, it is not necessary to separately set a cooling structure for cooling the driver 310, that is, it is not necessary to use a cooling liquid circulation to conduct heat and dissipate heat for the driver 310, as in the illustrated embodiment, thereby the volume and weight of the propeller 1000 can be reduced to optimize the propulsion efficiency of the propeller 1000. In the embodiment, the rated power of the first motor 210 can be smaller than that of the first motor 210 in the illustrated embodiment, so the heat dissipation requirement of the driver 310 is reduced, and the layout in the conduit area 130 can use the water in the external environment for heat dissipation.

[0087] In the embodiment, the electric control device 300 further comprises a steering controller 330 and a warping controller 370, which are located in the nose region 120 and electrically connected to the central controller 380. The steering controller 330 and the warping controller 370 are separated from the central controller 380 by the partition 1102 to avoid signal interference of the central controller 380 by the steering controller 330 and the warping controller 370. The steering controller 330, the warping controller 370 and the central controller 380 are located in the nose region 120, and no condensation can be formed in the nose region 120, thereby ensuring the safety of the steering controller 330, the warping controller 370 and the central controller 380.

[0088] It can be understood that the gondola region 110, the duct region 130 and the nose region 120 are not absolutely airtight, and the first partition element 414 is similar to the partition 410 of the illustrated embodiment, which allows the gas to break through the sealing pressure or leak from the tiny gap of the cable to the duct region 130 when the air pressure in the gondola region 110 increases to a certain extent. The second partition element 415 is also similar to the partition 410 of the illustrated embodiment, which allows the gas to break through the sealing pressure or leak from the tiny gap of the cable to the nose region 120 when the air pressure in the duct region 130 increases to a certain extent. The first partition element 414 and the second partition element 415 slow down the flow of hot gas to the duct region 130 and the nose region 120, eliminate the formation of condensation in the duct region 130 and the nose region 120, and ensure the safety of the electric control device 300.

[0089] Further, based on an improvement of the embodiment shown in FIG. 6, the propeller 1000 comprises an upper housing 700 and a lower housing 600, the upper housing 700 is provided with a nose housing 710 and an upper duct 720 for fixing the nose housing 710, the lower housing 600 is provided with a gondola housing 610 and a lower duct 620 for fixing the gondola housing 610, the lower duct 620 is sealingly connected to the upper duct 720, the nose region 120 is formed in the nose housing 710, the gondola region 110 is formed in the gondola housing 610, and the duct region 130 is partially arranged in the upper duct 720 and partially arranged in the lower duct 620. The driver 310 is located in the lower duct 620.

[0090] In this embodiment, the nose shell 710 is substantially the same as the nose shell 710 of the embodiment shown in FIG. 6, the upper duct 720 is substantially the same as the upper duct 720 of the embodiment shown in the figure, the gondola shell 610 is substantially the same as the gondola shell 610 of the embodiment shown in the figure, and the lower duct 620 is substantially the same as the lower duct 620 of the embodiment shown in the figure, except that the outer diameter of the upper duct 720 and the lower duct 620 is reduced to reduce water flow resistance, and the length of the lower duct 620 is increased to facilitate the assembly of the drive 310 in the lower duct 620. The wave plate 721 is arranged on the periphery of the lower duct 620. Part of the lower duct 620 extends into the upper duct 720 to achieve a sealed fit between the lower duct 620 and the upper duct 720. The duct area 130 is formed by the inner cavities of the upper duct 720 and the lower duct 620, i.e. most of the drive 310 is located in the lower duct 620, but it does not exclude that part of the drive 310 is still located in the upper duct 720 to make full use of the space of the duct area 130.

[0091] In this embodiment, the gondola shell 610 is provided with an intermediate shell 611 connected to the lower duct 620 and a rear end cover 612 covering the intermediate shell 611, the first conductive member 501 is provided with a busbar connected to the drive 310 and a wire harness connected to the first motor 210, and the connection between the wire harness and the busbar is opposite in the direction parallel to the axial direction of the first motor 210 at the rear end cover 612. The intermediate shell 611 is integrally formed with the lower duct 620, and the inner cavity of the intermediate shell 611 and the inner cavity of the lower duct 620 form a "T" shaped cavity. After the drive 310 is assembled into the lower duct 620, it is difficult to connect the output end 312 of the drive 310 to the first conductive member 501, so part of the output end 312 of the drive 310 needs to extend into the intermediate shell 611 and be opposite to the rear end cover 612. Before the rear end cover 612 is assembled with the intermediate shell 611, the assembly and connection of the output end 312 of the drive 310 and the conductive glue are performed from the rear end opening of the intermediate shell 611, and then the rear end cover 612 is tightly and fixedly assembled with the rear end opening of the intermediate shell 611. Specifically, during the assembly and connection of the first conductive member 501 and the drive 310, the busbar can be assembled with the drive 310 first, and then the drive 310 is assembled into the lower duct 620, so that part of the busbar extends into the intermediate shell 611 and is opposite to the rear end opening; then the wire harness connected to the first motor 210 is assembled and connected with the busbar 540 by using an assembly tool to extend from the rear end opening; and finally the rear end cover 612 is covered with the intermediate shell 611.

[0092] Specifically, to achieve the separation of the nacelle region 110 and the conduit region 130 by the first separation element 414, the intermediate shell 611 is provided with a wiring slot 613, the busbar 540 is located in the wiring slot 613, the circumference of the first separation element 414 is in sealing fit with the opening of the wiring slot 613 facing the rear end cover 612, and the first separation element 414 is provided with a wire harness hole in sealing fit with the wire harness 530. The nacelle shell 610 is provided with a baffle 614 opposite the lower conduit 620, a part of the baffle 614 extends to a position covered by the intermediate shell 611 to form the wiring slot 613 between the baffle 614 and the intermediate shell 611. The wiring slot 613 has a wire harness 530 opening facing the rear end cover 612, and the wire harness 530 opening is used for the AC wire harness 530 of the first conductive element to pass through and be connected to the first motor 210. The outer circumferential wall of the first separation element 414 is in sealing fit with the inner circumferential wall of the wiring slot 613. The wire harness hole can include a plurality of wire holes in sealing fit with the three-phase wires of the AC wire harness respectively to achieve the separation of the nacelle region 110 and the conduit region 130 by the first separation element 414.

[0093] In the embodiment, the end of the lower conduit 620 is provided with a boss 621 extending into the upper conduit 720, at least one sealing ring is arranged between the outer circumferential wall of the boss 621 and the inner circumferential wall of the lower conduit 620, the inner circumferential wall of the upper conduit 720 is provided with a limiting platform 722, and the end of the boss 621 abuts the second separation element 415 against the limiting platform 722. The cooperation of the boss 621, the limiting platform 722 and the second separation element 415 is substantially the same as that of the illustrated embodiment and will not be described here again.

[0094] Specifically, the second partition element 415 is provided with a mounting groove 1101 matched with the driver 310, and is provided with a direct current wire hole communicated with the mounting groove 1101, the second conductive piece 502 includes a direct current wire harness sealed matched with the direct current wire hole. The second partition element 415 is provided with a sealing cover plate 623, one side of the sealing cover plate 623 is provided with a butt joint boss 624, the mounting groove 1101 extends into the butt joint boss 624 from the side of the cover plate 623 away from the butt joint boss 624. The circumferential side of the sealing cover plate 623 is sealed matched with the inner wall of the upper conduit 720 through a sealing ring. The inner wall of the mounting groove 1101 is provided with a limiting protrusion matched with the end of the driver 310 to limit and stabilize the driver 310. The butt joint boss 624 is provided with two direct current wire holes 6241 penetrating into the mounting groove 1101. The positive wire and the negative wire of the direct current wire harness respectively pass through the two direct current wire holes and are tightly matched with the two direct current wire holes. The direct current wire harness is connected with the end of the driver 310 extending into the mounting groove 1101 to realize the transmission of direct current to the driver 310. The butt joint boss 624 is further provided with a signal wire hole 6242 in the middle of the two direct current wire holes 6241, the signal wire hole is used for tightly matching with the signal control wire connected with the driver 310.

[0095] Referring to Fig. 12, another embodiment is provided, which is different from the embodiment shown in Fig. 6 in that the partition 410 comprises a heat insulation box 413, and the electric control device 300 comprises the driver 310 located in the heat insulation box 413. The heat insulation box 413 can isolate the external hot air from entering the inside, thereby preventing the external heated moisture from entering the heat insulation box 413 to form condensation in contact with the driver 310, so as to ensure the safety of the driver 310. Specifically, the heat insulation box 413 is provided with a wire harness interface 414 and a cooling interface 415. The wire harness interface 414 is used for sealingly connecting with the current input wire harness and the current output wire harness, and the driver 310 inputs and outputs the current from the wire harness interface 414. The cooling interface 415 is used for sealingly connecting with the liquid input pipe and the liquid output pipe, and the driver 310 inputs and outputs the cooling medium from the cooling interface 415. The wire harness interface 414 comprises a direct current wire interface 4141 and an alternating current wire interface 4142. The direct current wire interface 4141 and the alternating current wire interface 4142 are respectively arranged at opposite ends of the heat insulation box 413. The direct current wire interface 4141 is tightly matched with the direct current wire of the battery, and the alternating current wire interface 4142 is tightly matched with the alternating current wire connected with the first motor 210. The direct current wire and the alternating current wire are connected to the driver 310. A signal line input interface is further arranged at the same side of the direct current wire interface 4141, and a signal line output interface is further arranged at the same side of the alternating current wire interface 4142. The signal line input interface and the signal line output interface are respectively used for connecting the first signal line and the second signal line to the driver 310. The first signal line is connected with the central controller 380 and the interactive control device, and the second signal line is connected with the first motor 210. The cooling interface 415 is arranged at the same side of the alternating current wire interface 4142. The cooling interface 415 comprises a cooling liquid input port and a cooling liquid output port, which are tightly matched with two pipes respectively. The two pipes are sealingly connected to the cooling plate of the driver 310, so as to input the cooling liquid to the cooling plate. The cooling liquid absorbs the heat of the driver 310 through the cooling plate, and then carries the heat of the driver 310 to the cooling cavity of the embodiment shown in the figure, so as to exchange heat with the water of the external environment, thereby realizing the cooling of the driver 310. The heat insulation box 413 can prevent the moisture from forming condensation in contact with the driver 310, and does not affect the normal operation of the driver 310, thereby ensuring the safety of the driver 310.

[0096] It can be understood that there is a heat insulation medium between the inner wall of the heat insulation box 413 and the driver 310. The heat insulation medium can be air, which is used to isolate the heat conduction to the driver 310, so as to avoid the heating of the driver 310. Of course, in other embodiments, the heat insulation box 413 can be provided with a vacuum, so that there is no medium to conduct heat to the driver 310, and the heat of the driver 310 can be dissipated to the outside through the cooling liquid.

[0097] In some possible embodiments, the partition 410 can further comprise a heat insulation box 413 for insulating the warping controller 370 and the steering controller 330, the heat insulation box 413 wrapping the warping controller 370 and the steering controller 330 to prevent external condensation from contacting the warping controller 370 and the steering controller 330 and to prevent condensation from being formed in the heat insulation box 413 from contacting the warping controller 370 and the steering controller 330.

[0098] Referring to FIG. 13, another embodiment is provided, which is substantially the same as the embodiment shown in the figures, except that the condensation elimination structure 400 comprises a condensation collection assembly 420 for collecting condensation formed by water vapor heated by the heat source 200 condensing on the inner wall of the accommodation cavity 100 and separating from the electric control device 300. The condensation collection assembly 420 eliminates condensation in a different way from the partition assembly, and the condensation collection assembly 420 aims to collect condensation formed in the accommodation cavity 100 and guide the condensation to a safe area to avoid the condensation from contacting the electric control device 300.

[0099] As shown in Fig. 13, as one possible embodiment, the inner wall of the accommodation cavity 100 has a low-temperature cooling area 190, the temperature of the low-temperature cooling area 190 is the lowest temperature in the accommodation cavity 100, the cooling area 190 has a safe distance from the electric control device 300, and the condensation collection assembly 420 is arranged in the low-temperature cooling area 190 to collect the condensation of the cooling area 190. The cooling area 190 can be arranged with a strong heat dissipation structure to increase the heat dissipation efficiency, so that the temperature of this area is kept at the lowest temperature in the entire accommodation cavity 100, and then once the humidity in the accommodation cavity 100 is heated, the condensation will be formed in the cooling area 190 first. Since the humidity in the accommodation cavity 100 first forms condensation in the cooling area, the amount of humidity in the accommodation cavity 100 will decrease and it is not easy to form condensation in other areas. By arranging the cooling area 190 to have a certain safe distance from the electric control device 300, the condensation in the cooling area 190 can be prevented from contacting the electric control device 300, and the condensation collection assembly 420 can collect the condensation in the cooling area 190 to avoid the condensation in the cooling area 190 from forming saturation and forming condensation in other positions. The condensation collection assembly 420 can adopt drainage collection or adopt moisture absorption collection, or adopt scraping collection and other ways to collect condensation, and the condensation collection assembly 420 aims to collect the condensation hanging on the wall surface of the cooling area 190 and guide it to a safe area. As one possible implementation, the safe area can be located at the lowest part of the accommodation cavity 100, for example, a water tank is arranged at the lowest part of the accommodation cavity 100 to collect the accumulated condensation. The water tank is arranged away from the heat source 200 at the lowest part of the accommodation cavity 100, and the water in the water tank does not affect the operation of the heat source 200. The water in the water tank can be exposed to the water surface when the thruster 1000 stops working, and the lowest part of the accommodation cavity 100 is raised due to the thruster 1000, so that the water in the water tank gradually evaporates to the outside of the accommodation cavity 100 due to heating. Of course, the safe area can also be located at the position of the water surface in the accommodation cavity 100, so as to quickly discharge the collected condensation out of the accommodation cavity 100.

[0100] As a possible embodiment, the accommodation cavity 100 is a sealed cavity, which has a pod area 110 located at the underwater part of the propeller 1000, a nose area 120 located at the water surface part, and a conduit area 130 connecting the pod area 110 and the nose area 120, the heat source 200 is located in the pod area 110, the electric control device 300 is located in the nose area 120, and the cooling area 190 is located at the conduit area 130 away from the nose area 120. The cooling area 190 is arranged in the conduit area 130, which can prevent the condensation of the cooling area 190 from flowing upward to the electric control device 300 in the nose area 120, and reduce the possibility of the condensation of the cooling area 190 contacting the electric control device 300. The cooling area 190 arranged in the conduit area 130 can also take full advantage of the conduit area 130 being easily in contact with the external water, and not being affected by the high temperature of the heat source 200 in the pod area 110, to accelerate the efficiency of forming condensation in the cooling area 190, thereby greatly reducing the formation of condensation in other positions.

[0101] As a possible embodiment, the propeller 1000 is provided with a water cooling structure 180 outside the conduit area 130 for cooling the cooling area 190, and the water cooling structure 180 exchanges heat with the external water. The water cooling structure 180 includes a plurality of heat-conducting fins 181 arranged around the conduit 1400, which can increase the contact area of the corresponding cooling area 190 of the lower conduit 620 with the external water, and accelerate the flow rate of the water flowing between adjacent two heat-conducting fins 181, thereby increasing the heat dissipation efficiency, so that the temperature of the cooling area 190 is lower.

[0102] An embodiment is provided as shown in Fig. 14, which is substantially the same as the embodiment shown in Fig. 12, except that the cooling area 190 is located at the nose area 120. Specifically, the accommodation cavity 100 is a sealed cavity, which has a pod area 110 located at the underwater part of the propeller 1000, a nose area 120 located at the water surface part, and a conduit area 130 connecting the pod area 110 and the nose area 120, the heat source 200 is located in the pod area 110, the electric control device 300 is located in the conduit area 130, and the cooling area 190 is located at the nose area 120 away from the conduit area 130. The cooling area 190 in the nose area 120 can utilize the airflow in the nose area 120 to quickly exchange heat with the outside, thereby achieving rapid cooling of the cooling area 190, and the condensation collection assembly 420 is also located in the nose area 120, thereby facilitating the rapid discharge of the collected condensation from the nose 1300 out of the accommodation cavity 100. Specifically, the propeller 1000 is provided with a wind cooling structure 170 outside the nose area 120 for cooling the cooling area 190, and the wind cooling structure 170 exchanges heat with the outside air. The wind cooling structure 170 includes at least two groups of heat dissipation fins 171, and the two groups of heat dissipation fins 171 are respectively formed on the two side surfaces of the nose shell 710 parallel to the axial direction of the first motor 210. The two groups of heat dissipation fins 171 each include a plurality of parallel strip-shaped fins, and the length direction of the strip-shaped fins is parallel to the axial direction of the first motor 210. The heat dissipation fins 171 are denser and more numerous than the fins in the illustrated embodiment, so as to increase the heat exchange efficiency between the airflow and the nose shell 710, thereby rapidly reducing the temperature on both sides of the nose shell 710 to achieve a lower temperature of the cooling area 190.

[0103] Referring to Figs. 12 and 15, as a possible embodiment, the condensation collection assembly 420 includes a cooling device 421 and a collection device 422, the cooling device 421 cools the cooling area 190, the collection device 422 collects the condensation formed on the cooling device 421 and the cooling area 190, and guides the condensation away from the electric control device 300. The cooling device 421 can accelerate the heat dissipation of the cooling area 190, so that the cooling area 190 cools faster and has a lower temperature. The collection device 422 is connected with the cooling device 421, which can accelerate the collection and removal of the condensation, and prevent the condensation from contacting the electric control device 300.

[0104] For example, based on the embodiment shown in Fig. 12, an improved possible implementation is shown in Fig. 15, in which the cooling device 421 includes a condensing element 4211, a compression element 4212 and an evaporating element 4213, which are in communication with each other through pipes, the evaporating element 4213 is located in the cooling area 190 to absorb heat and refrigerate, the compression element 4212 conducts the cooling medium from the evaporating element 4213 to the condensing element 4211, and the condensing element 4211 conducts the heat of the cooling medium out of the storage cavity 100. The condensing element 4211, the compression element 4212 and the evaporating element 4213 can all be passed through electric current to achieve control of the phase transition of the cooling medium. The evaporating element 4213 can be located in the conduit area 130, and the condensing element 4211 is located outside the conduit 1400. The condensing element 4211 finally dissipates heat through the water outside, so that the temperature of the evaporating element 4213 is reduced, and condensation will be formed on the inner wall of the storage cavity 100 around the evaporating element 4213. The evaporating element 4213 and its surroundings can be provided with vertically extending drainage pieces, when the condensation is formed on the vertically extending drainage pieces 4214, it will flow downward to the bottom due to gravity, and the collector device 422 can include a drainage shell 4221 located around the evaporating element 4213, the drainage shell 4221 is provided with a drainage groove, which receives the condensation flowing down from the drainage pieces 4214. The collector device 422 further includes a storage shell 4222 connected to the drainage shell 4221, the storage shell 4222 is provided with a water tank, which can be a structure such as the embodiment shown, of course, it can also be provided with a sponge, a desiccant or other strong water-absorbing material in the water tank to stabilize the collected condensation. Of course, a one-way valve can also be provided between the storage shell 4222 and the outside of the propeller 1000, which only allows water in the water tank to be discharged outside the storage cavity 100, but prohibits water outside the storage cavity 100 from entering the storage cavity 100 through the valve.

[0105] Please refer to FIG. 12 and FIG. 16, as a possible embodiment, the same as the embodiment shown in FIG. 15, the difference is that the cooling device 421 includes a heat absorption device 4215, which is provided with a heat absorption plate 4216 attached to the cooling area 190, and a plurality of heat absorption fins 4217 extending from the heat absorption plate 4216, the heat absorption fins 4217 absorb heat near the cooling area 190, and conduct heat from the cooling area 190 to the outside of the receiving cavity 100 through the heat absorption plate 4216. The heat absorption fins 4217 and the heat absorption plate 4216 are integrally formed, and the heat absorption fins 4217 and the heat absorption plate 4216 can be made of metal materials with good heat conductivity, for example, the heat absorption fins 4217 and the heat absorption plate 4216 can be made of copper. The heat absorption fins 4217 and the heat absorption plate 4216 quickly absorb the heat of the cooling area 190 and quickly conduct the heat to the pipe 1400, so that the pipe 1400 can quickly dissipate the heat to the water in the external environment.

[0106] As shown in FIG. 17, a different embodiment from the embodiment shown in FIG. 12 is provided, the condensation collection assembly 420 includes a moisture absorption sheet 423, which is attached to the inner wall of the receiving cavity 100 for absorbing the condensation formed on the inner wall of the receiving cavity 100. The condensation collection assembly 420 can include a plurality of moisture absorption sheets 423, which can be partially attached to the inner wall of the head region 120 near the driver 310, and can also be partially attached to the inner wall of the head region 120 near the lift controller 370, the steering controller 330, and can also be attached to the position near the central controller 380. The moisture absorption sheet 423 is provided with water absorption material, which has high condensation absorption performance. When fine condensation is formed on the inner wall to which the moisture absorption sheet 423 is attached, the moisture absorption sheet 423 preferentially absorbs the condensation and stabilizes the condensation in the moisture absorption sheet 423, so that the condensation is not easy to contact the electronic control device 300. By setting the moisture absorption sheet 423 to be separated from the driver 310, the lift controller 370, the steering controller 330 and the central controller 380, the condensation in the moisture absorption sheet 423 can be prevented from contacting the driver 310, the lift controller 370, the steering controller 330 and the central controller 380.

[0107] Please refer to FIG. 18, the present application also provides an embodiment, which is basically the same as the embodiment shown in FIG. 17, the difference is that the condensation collection assembly 420 includes a moisture absorption assembly 424, which is provided on one side of the valve 1200 for absorbing moisture on the air inlet path of the valve 1200. The moisture absorption assembly 424 absorbs moisture on the air inlet path of the valve 1200, thereby effectively reducing the moisture in the gas sucked into the receiving cavity 100, i.e. reducing the humidity in the receiving cavity 100, and further reducing the formation of condensation in the receiving cavity 100.

[0108] Specifically, the moisture absorption component 424 includes a fixed cover 4241 and a plurality of moisture absorption layers 4242 arranged in the fixed cover 4241. The fixed cover 4241 covers the air inlet path of the valve 1200. The plurality of moisture absorption layers 4242 are arranged along the air inlet path of the valve 1200. The fixed cover 4241 is provided with a drainage groove 4243 for guiding the liquid absorbed by the plurality of moisture absorption layers 4242 to a safe area. In one possible implementation, the fixed cover 4241 is located outside the valve 1200. The fixed cover 4241 is provided with an inner air port and an outer air port, and a bent air channel 4244 between the inner air port and the outer air port. The inner air port is connected to the valve 1200, and the outer air port is arranged outside the fixed cover 4241. The plurality of moisture absorption layers 4242 are arranged in the bent air channel 4244. When the valve 1200 inhales air from the outer air port, the external air passes through the outer air port, the plurality of moisture absorption layers 4242 and the inner air port in sequence, so that the plurality of moisture absorption layers 4242 can absorb the moisture in the air, thereby reducing the moisture of the air passing through the valve 1200. The fixed cover 4241 is provided with the drainage groove 4243 at the bottom of the bent air channel 4244. The drainage groove 4243 has an opening facing the outside of the fixed cover 4241, so as to collect and guide the moisture absorbed by the plurality of moisture absorption layers 4242 to the outside of the valve 1200, thereby preventing water from entering the accommodation cavity 100.

[0109] Referring to FIG. 17, the application also provides an embodiment which is substantially the same as the embodiment shown in FIG. 12, except that the condensation elimination structure 400 includes an anti-condensation coating 430 arranged on the surface of the electric control device 300 for preventing the surface of the electric control device 300 from gathering water molecules to form condensation. The anti-condensation coating 430 is coated on the surface of the electric control device 300, so that the surface of the electric control device 300 is hydrophobic, thereby preventing the surface of the electric control device 300 from forming condensation and reducing the risk of short circuit caused by the contact between the electric control device 300 and the condensation. In one possible implementation, the anti-condensation coating 430 is a nano-process coating which increases the hydrophobicity of the surface of the electric control device 300, thereby further reducing the formation of condensation on the surface of the electric control device 300.

[0110] Referring to FIG. 19, the present application also provides an embodiment which is substantially the same as the embodiment shown in FIG. 17, except that the condensation-eliminating structure 400 comprises a heat insulation module 440 which is configured to prevent the heat generated by the heat source 200 from being conducted to the surroundings of the electric control device 300, so as to reduce the temperature rise of the water vapor around the electric control device 300. The heat insulation module 440 is different from the partition 410 of the embodiment shown in the figure, and the heat insulation module 440 can block the heat generated by the heat source 200 from being conducted but does not prevent the flow of gas, and the heat insulation module 440 blocks most of the heat in the area where the heat source 200 is located, so as to avoid the heat from being conducted to the area where the electric control device 300 is located, and to avoid the water vapor in the area where the electric control device 300 is located from being heated and then being cooled to form condensation. As a possible implementation, for example, the heat source 200 comprises a first motor 210 which is configured to drive the propeller 220 to rotate, the accommodation cavity 100 has a nacelle area 110 which is located in the underwater part of the propeller 1000, a nose area 120 which is located in the above-water part of the propeller 1000, and a duct area 130 which connects the nacelle area 110 and the nose area 120, the first motor 210 is located in the nacelle area 110, the electric control device 300 is located in the nose area 120 or / and the duct area 130, and the heat insulation module 440 is located in the nacelle area 110, so as to prevent the temperature rise in the nacelle area 110 from being conducted to the duct area 130 and the nose area 120. Specifically, the heat insulation module 440 comprises a heat insulation coating which is arranged on the inner wall of the nacelle area 110. The heat insulation coating is arranged near the inner wall of the nacelle area 110 which connects the duct area 130, so as to block the heat conduction when the heat in the nacelle area 110 is conducted to the duct area 130, thereby slowing down the temperature rise in the nacelle area 110, and reducing the formation of condensation in the duct area 130. In another implementation, the heat insulation module 440 comprises a heat insulation member which is arranged at the position where the nacelle area 110 connects the duct area 130. The heat insulation member can be adhered to the inner wall of the nacelle area 110 which connects the duct area 130. The heat insulation member can be heat insulation foam, or heat insulation rubber, or heat insulation film.

[0111] Referring to FIG. 20, the application also provides an embodiment which is substantially the same as the embodiment shown in FIG. 10, except that the condensation removal structure 400 includes a gas-tight assembly 450 which is disposed at the assembly gap of the above-water portion of the thruster 1000, for preventing external gas from entering the receiving cavity 100 from the assembly gap. The condensation removal structure 400 prevents gas from entering the receiving cavity 100 from the assembly gap means that the condensation removal structure 400 aims to reduce the humidity in the receiving cavity 100 by reducing the gas entering from the assembly gap, so as to reduce the formation of condensation. The gas-tight assembly 450 can be disposed in the assembly gap, or outside the assembly gap, inside or outside the receiving cavity 100. It can be understood that the assembly gap is located in the above-water portion of the thruster 1000, so as to avoid water entering the receiving cavity 100 from the assembly gap. The assembly gap is formed between devices which have a large thermal expansion and contraction deformation, that is, generally the assembly gap is caused by the thermal expansion and contraction of the devices, which increases the external gas entering the receiving cavity 100 from the assembly gap. The gas-tight assembly 450 can adapt to the gap change caused by thermal expansion and contraction, so as to enhance the gas-tightness and prevent gas from entering the receiving cavity 100.

[0112] For example, as shown in FIG. 20 and FIG. 21, as one possible implementation, the propeller 1000 includes a cable harness 900 electrically connecting the electrically controlled device 300, the assembly gap is formed between the cables inside the cable harness 900, and the end of the cable harness 900 away from the electrically controlled device 300 is located outside the accommodation cavity 100. One end of the cable harness 900 is connected to the power battery outside the accommodation cavity 100, and the other end is connected to the driver 310 inside the accommodation cavity 100. The cable harness 900 is also connected to the interactive control device located outside the accommodation cavity 100, and connected to the central controller 380 inside the accommodation cavity 100, so the cable harness 900 includes a plurality of cables 910, each cable 910 can be individually sealed with the head shell 710, but each cable 910 is only the outer insulating material 911 sealed with the head shell 710, and a plurality of conductive metal wires 912 are spliced together inside the insulating material 911. Since the cross section of each conductive metal wire 912 is circular, there is a gap between adjacent conductive metal wires 912, which is the assembly gap of the cable harness 900. When the conductive metal wire 912 transmits a large current, it is easy to heat and increase in diameter, thereby causing the insulating material 911 to expand, at which time the assembly gap also increases, thereby easily causing gas to enter the accommodation cavity 100 from the assembly gap. In order to avoid the assembly gap transmitting external gas into the accommodation cavity 100, the airtight assembly 450 includes an elastic element 451, which is arranged in the assembly gap, and the elastic element 451 elastically deforms with the thermal expansion and contraction of the cables of the cable harness 900, and the elastic element 451 blocks the assembly gap. When the conductive metal wire 912 is heated and increases in diameter, the elastic element 451 is also heated and expands to fill the gap between the plurality of conductive metal wires 912, thereby blocking the transmission of gas in the assembly gap. It can be understood that the airtight assembly 450 is an insulating material to provide good protection for the conductive wire.

[0113] Further, the airtight assembly 450 also includes a stabilizing element 452, which is clamped around the periphery of the cable harness 900 to limit the expansion of the cable harness 900. The stabilizing element 452 is a metal ring that is clamped around the periphery of the cable 910, thereby limiting the expansion of the insulating material 911 of the cable 910, and further preventing the expansion of the assembly gap. When the conductive metal wire 912 is heated and expands, the assembly gap is limited to decrease by the stabilizing element 452, and the contact between the airtight assembly 450 and the conductive metal wire 912 is more closely, thereby increasing the airtightness, improving the condensation elimination efficiency in the accommodation cavity 100, and ensuring the safety of the electrically controlled device 300.

[0114] Referring to Fig. 22, the present application also provides an embodiment which is substantially the same as the embodiment shown in Fig. 4, except that the propeller 1000 is provided without the valve 1200, i.e. the accommodation chamber 100 does not need to stabilize the internal air pressure by breathing air through the valve 1200, so that the accommodation chamber 100 can be made almost completely air-tight by combining the air-tight assembly 450. In this embodiment, the condensation-eliminating structure 400 further comprises a pressure relief device 460 which is in communication with the accommodation chamber 100 and is used to release the air pressure in the accommodation chamber 100. When the heat source 200 heats the air in the accommodation chamber 100, the air pressure in the accommodation chamber 100 increases, and the pressure relief device 460 can release the increased air pressure, thereby maintaining the stable internal air pressure of the accommodation chamber 100. A possible implementation is provided, as shown in the figure, wherein the pressure relief device 460 comprises a deformable air bag 461 which is in communication with the accommodation chamber 100 and absorbs the air in the accommodation chamber 100 when the air pressure in the accommodation chamber 100 increases. Specifically, the accommodation chamber 100 has an interface which connects the deformable air bag 461 and is located at the top of the accommodation chamber 100. When the temperature of the heat source 200 in the accommodation chamber 100 increases and the air pressure in the accommodation chamber 100 increases, the deformable air bag 461 starts to inhale and expand, thereby releasing the increased air pressure in the accommodation chamber 100. Of course, in another implementation, the deformable air bag 461 can be replaced by a pressure relief chamber and an elastically movable piston in the pressure relief chamber. When the air pressure in the accommodation chamber 100 increases, the air enters the pressure relief chamber and forces the piston to move, thereby increasing the air containing space of the pressure relief chamber. When the air pressure in the accommodation chamber 100 returns to normal, the elastic piston returns to the original position under the elastic force, thereby restoring the normal air pressure in the accommodation chamber 100.

[0115] It can be understood that the propeller 1000 of the embodiments of the present application is not limited to the above-mentioned embodiments, and any improvement similar to or combined with the above-mentioned embodiments can be regarded as an embodiment of the present application. In the embodiments, the heat source 200 is not limited to the above-mentioned embodiments or the combination of the above-mentioned embodiments, and the electric control device 300 is also not limited to the above-mentioned embodiments or the combination of the above-mentioned embodiments. Any component in the accommodation chamber 100 of the propeller 1000 which can have a circuit short can be regarded as the electric control device 300, and any component whose temperature is higher than that of the other component can be regarded as the heat source 200. For example, in the embodiments, the temperature of the driver 310 is higher than that of the steering controller 330, the heat source 200 comprises the driver 310, and the electric control device 300 comprises the steering controller 300.

[0116] Further, referring to FIG. 23, the embodiment of the present application further provides a water area movable device 3000, which comprises the propeller 1000 of the embodiment as shown in the figure, and further comprises a hull 2000 and a battery, the propeller 1000 is installed on the hull 2000, and the battery is electrically connected with the electric control device 300 of the propeller 1000.

[0117] Specifically, the propeller 1000 is fixed to the transom of the hull 2000 through the clamp, and the propeller 1000 is an outboard motor. Of course, the water area movable device 3000 of the embodiment of the present application is not limited to the propeller 1000 of the embodiment as shown in the figure, and the propeller 1000 of each of the above-mentioned embodiments can be installed on the hull 2000, which can be used as the embodiment of the water area movable device 3000 provided by the present application.

[0118] Further, as shown in the figure, the water area movable device 3000 further comprises an interaction system 3100, which is arranged on the hull 2000 and is used for accepting instructions and controlling the propeller 1000 to work. In the embodiment, the interaction system 3100 can be installed on the bow of the hull 2000, and the interaction system 3100 is electrically connected with the heave controller 370, the steering controller 330, the central controller 380 and the driver 310 to receive the working information of heaving, steering and propelling. The interaction system 3100 is also used for receiving the control instructions of the user, and controlling the heave motor, the steering motor and the first motor 210 to operate according to the control instructions.

[0119] Specifically, the interaction system 3100 includes a steering wheel, a button and a gear device. The steering wheel is rotatably arranged on the hull 2000, and is configured to receive a user steering control signal and convert the steering control signal into a steering electric signal. The steering electric signal is transmitted to a steering motor through a conductive cable, so as to control the steering of the hull 2000. The button is installed on the bow of the hull 2000, and can be located on one side of the steering wheel. The button is configured to receive a user lifting instruction, so as to control the operation of the lifting structure, so that the pod shell 610 and the propeller 220 of the propeller 1000 are lifted or submerged underwater. The gear device is installed on the hull 2000 and electrically connected to the driver 310 through a conductive cable, so as to receive a user forward or backward control instruction and transmit the forward or backward control instruction to the driver 310 to control the operation of the first motor 210. The interaction system 3100 further includes a display screen configured to receive a user touch instruction and transmit the user touch instruction to the propeller 1000. The central controller 380 converts the operation information of the propeller 1000 into display screen displayable information, so that the user can obtain the operation state of the propeller 1000. It can be understood that the interaction system 3100 of the present application is not limited to the above embodiment, and any interaction system 3100 that can achieve user control interaction with the propeller 1000 can be used as an embodiment of the present application. For example, the interaction system 3100 can also be provided with a manual pure mechanical steering wheel to control the steering of the propeller 1000 by using pure mechanical torque.

[0120] It can be understood that the water area movable device 3000 of the embodiments of the present application is not limited to the above embodiments, and any improvement similar to or combined with the above embodiments can be used as an embodiment of the present application.

[0121] The embodiments of the present application are described in detail above, and the principles and embodiments of the present application are described by using specific examples. The above description of the embodiments is only used to help understand the method and core idea of the present application; at the same time, for those skilled in the art, according to the idea of the present application, the specific embodiments and application range can be changed. In summary, the content of the specification should not be understood as a limitation of the present application.

Claims

1. A propeller, characterized in that The propeller is configured with a receiving cavity, the receiving cavity receives a heat source and an electric control device, the temperature around the heat source is higher than the temperature around the electric control device, the propeller is further configured with a condensation elimination structure, the condensation elimination structure is used to prevent the formation of condensation in the receiving cavity, or to absorb condensation to prevent the condensation from contacting the electric control device.

2. The propulsor of claim 1, wherein, The heat source includes a first motor, and the electric control device includes a driver electrically connected to the first motor.

3. The propulsor of claim 2, wherein, The receiving cavity has a nacelle area located in the underwater part of the propeller, and the first motor is located in the nacelle area.

4. The propulsor of claim 2, wherein, The heat source includes a reducer connected to the first motor and the propeller.

5. The propulsor of claim 1, wherein, The receiving cavity has a nose area located in the above-water part of the propeller, the nose area receives a second motor for driving the propeller to turn, and the electric control device includes a turning controller located in the nose area, the turning controller is electrically connected to the second motor.

6. The propulsor of claim 5, wherein, The propeller is configured with a third motor for driving the propeller to lift, and the electric control device includes a lifting controller located in the nose area, the lifting controller is electrically connected to the third motor.

7. The propulsor of claim 1, wherein, The electric control device includes a central controller responsible for processing the interactive control of the propeller and external devices.

8. The propulsor of claim 7, wherein, The receiving cavity has a top area away from the heat source, the central controller is located in the top area, and the top area is provided with a closed box, and the central controller is located in the closed box.

9. The propulsor of claim 1, wherein, The receiving cavity is a sealed cavity, and the propeller is configured with a valve communicating between the external environment and the receiving cavity, the valve allows the external gas to enter and exit the receiving cavity, and prohibits the external water from entering the receiving cavity.

10. The propulsor of claim 9, wherein, The valve is opened in the side wall of the top of the propeller and away from the windward side.

11. The propulsor of claim 1, wherein, The condensation elimination structure includes a partition, the partition separates the electric control device and the heat source, and is used to prevent the heat source from heating the electric control device and the water vapor around it, so that the water vapor is condensed after being heated.

12. The propulsor of claim 11, wherein, The receiving cavity is a sealed cavity, the receiving cavity has a nacelle area located in the underwater part of the propeller and a nose area located in the above-water part, the heat source is located in the nacelle area, the electric control device is located in the nose area, and the partition separates the nacelle area and the nose area into two independent sealed areas.

13. The propulsor of claim 11, wherein, The heat source includes a first motor, the electric control device includes a driver electrically connected to the first motor, the driver and the first motor are connected through a conductive part, and the partition is sealingly connected with the conductive part.

14. The propulsor of claim 13, wherein, The propeller includes an upper shell and a lower shell fixed with the upper shell, the nose area is formed in the upper shell, the nacelle area is formed in the lower shell, and the partition is connected near the connection between the upper shell and the lower shell.

15. The propulsor of claim 14, wherein, The lower shell is provided with a pod shell and a lower conduit for fixing the pod shell, the upper shell is provided with a head shell and an upper conduit for fixing the head shell, the lower conduit is sealingly connected with the upper conduit, the partition is located in the lower conduit or the upper conduit and sealingly cooperates with the inner wall of the lower conduit or the upper conduit, the conductive member is provided with a wire harness, and the partition is provided with a wire harness hole sealingly cooperating with the wire harness.

16. The propulsor of claim 15, wherein, An end of the lower conduit is provided with a boss extending into the upper conduit, at least one sealing ring is arranged between the outer circumferential side wall of the boss and the inner circumferential side wall of the upper conduit, the boss is provided with a wire passing hole for allowing the wire harness to pass, and the inner circumferential side wall of the upper conduit is provided with a limiting platform, and the end of the boss abuts the partition against the limiting platform.

17. The propulsor of claim 16, wherein, The upper conduit is provided with a sealing hole extending to the limiting platform, a part of the partition sealingly cooperates with the sealing hole, and another part abuts against the limiting platform.

18. The propulsor of claim 14, wherein, The lower shell is provided with a pod shell and a conduit for fixing the pod shell, the end of the conduit is sealingly connected with the upper shell, the partition is located at the end of the conduit, the conductive member is provided with a busbar electrically connected with the driver, the busbar is integrated with the partition, the driver abuts against the partition, and the conductive member is further provided with a wire harness passing through the conduit and connected with the busbar.

19. The propulsor of claim 15, wherein, The upper conduit is further provided with a heat conduction cavity isolated from the accommodation cavity, the heat conduction cavity is provided with a heat conduction pipe connected with the driver, the lower conduit is provided with a cooling liquid cavity isolated from the accommodation cavity, and is provided with an inlet and outlet liquid port in communication with the cooling liquid cavity, the inlet and outlet liquid port is sealingly connected with the heat conduction pipe, and the heat of the driver is taken away by the cooling liquid in the heat conduction pipe to the cooling liquid cavity and exchanged with external water at the lower conduit.

20. The propulsor of claim 11, wherein, The accommodation cavity is a sealed cavity, the accommodation cavity has a pod region located in the underwater part of the propeller, a head region located in the water surface part, and a conduit region located between the pod region and the head region, the heat source is located in the pod region, a part of the electric control device is located in the head region, and another part is located in the conduit region, and the partition separates the pod region, the conduit region and the head region into three independent sealed regions.

21. The propulsor of claim 20, wherein, The partition includes a first partition element and a second partition element, the first partition element separates the pod region and the conduit region, and the second partition element separates the conduit region and the head region.

22. The propulsor of claim 21, wherein, The heat source includes a first motor, the electric control device includes a driver electrically connected with the first motor, the driver is located in the conduit region and connected with the first motor through a first conductive member, the first conductive member sealingly cooperates with the first partition element, the driver is electrically connected with a battery through a second conductive member, and the second conductive member sealingly cooperates with the second partition element.

23. The propulsor of claim 22, wherein, The propeller comprises an upper shell and a lower shell, the upper shell is provided with a nose shell and an upper conduit for fixing the nose shell, the lower shell is provided with a pod shell and a lower conduit for fixing the pod shell, the lower conduit is sealingly connected with the upper conduit, a nose region is formed in the nose shell, a pod region is formed in the pod shell, a part of the conduit region is arranged in the upper conduit, and another part is arranged in the lower conduit, and the driver is located in the lower conduit.

24. The propulsor of claim 23, wherein, The pod shell is provided with an intermediate shell connected with the lower conduit and a rear end cover covering the intermediate shell, the first conductive member is provided with a busbar connected with the driver and a wire harness connected with the first motor, and the connection head of the wire harness and the busbar is opposite to the rear end cover in a direction parallel to the axial direction of the first motor.

25. The propulsor of claim 24, wherein, The intermediate shell is provided with a wiring slot, the busbar is located in the wiring slot, the circumferential direction of the first separation element is sealingly matched with the opening of the wiring slot facing the rear end cover, and the first separation element is provided with a wire harness hole sealingly matched with the wire harness.

26. The propulsor of claim 23, wherein, The end of the lower conduit is provided with a boss extending into the upper conduit, at least one sealing ring is arranged between the outer circumferential side wall of the boss and the inner circumferential side wall of the lower conduit, and the inner circumferential side wall of the upper conduit is provided with a limiting platform, and the end of the boss abuts the second separation element against the limiting platform.

27. The propulsor of claim 26, wherein, The second separation element is provided with a groove matched with the driver and a direct current wire hole communicated with the groove, and the second conductive member comprises a direct current wire harness sealingly matched with the direct current wire hole.

28. The propulsor of claim 11, wherein, The separation element comprises a heat insulation box, and the electric control device comprises a driver located in the heat insulation box.

29. The propulsor of claim 28, wherein, The heat insulation box is provided with a wire harness interface and a cooling interface, the wire harness interface is used for sealingly connecting with a current input wire harness and a current output wire harness, the driver inputs and outputs current from the wire harness interface, the cooling interface is used for sealingly connecting with a liquid input pipe and a liquid output pipe, and the driver inputs and outputs cooling medium from the cooling interface.

30. The propulsor of claim 28, wherein, The inner wall of the heat insulation box is air-insulated from the driver, or the heat insulation box is vacuum-insulated.

31. The propulsor of claim 1, wherein, The condensation elimination structure comprises a condensation collection assembly for collecting condensation formed by water vapor heated by the heat source on the inner wall of the accommodation cavity and separating from the electric control device.

32. The propulsor of claim 31, wherein, The inner wall of the accommodation cavity has a cooling area with the lowest temperature in the accommodation cavity, the cooling area has a safety distance from the electric control device, and the condensation collection assembly is arranged in the cooling area to collect condensation of the cooling area.

33. The propulsor of claim 32, wherein, The accommodation cavity is a sealed cavity, the accommodation cavity has a pod region located in a submerged part of the propeller and a nose region located in an above-water part, and a conduit region connecting the pod region and the nose region, the heat source is located in the pod region, the electric control device is located in the nose region, and the cooling area is located in the conduit region away from the nose region.

34. The propulsor of claim 33, wherein, The propeller is provided with a water cooling structure outside the conduit region for cooling the cooling area, and the water cooling structure is in heat exchange with external water.

35. The propulsor of claim 32, wherein, The accommodation cavity is a sealed cavity, which has a nacelle area located at a water-submerged part of the propeller, a nose area located at a water-surrounded part of the propeller, and a duct area connecting the nacelle area and the nose area, the heat source is located in the nacelle area, the electric control device is located in the duct area, and the cooling area is located at the nose area away from the duct area.

36. The propulsor of claim 35, wherein, The propeller is provided with a wind cooling structure outside the nose area for cooling the cooling area, and the wind cooling structure exchanges heat with external air.

37. The propulsor of claim 32, wherein, The condensation collection assembly includes a cooling device and a collection device, the cooling device cools the cooling area, and the collection device collects condensation formed on the cooling device and the cooling area and drains the condensation away from the electric control device.

38. The propulsor of claim 37, wherein, The cooling device includes a condensing element, a compression element and an evaporating element, which are connected to each other by pipelines, the evaporating element absorbs heat to cool in the cooling area, the compressor compresses the cooling medium conducted from the evaporating element and conducts it to the condensing element, and the condensing element conducts heat of the cooling medium out of the accommodation cavity.

39. The propulsor of claim 37, wherein, The cooling device includes a heat absorption element, which is provided with a heat absorption plate abutting against the cooling area and a plurality of heat absorption fins extending from the heat absorption plate, the heat absorption fins absorb heat around the cooling area and conduct the heat from the cooling area to outside of the accommodation cavity through the heat absorption plate.

40. The propulsor of claim 31, wherein, The condensation collection assembly includes a moisture absorption sheet, which is attached to an inner wall of the accommodation cavity for absorbing condensation formed on the inner wall of the accommodation cavity.

41. The propulsor of claim 40, wherein, The electric control device includes a driver for driving a first motor to operate, and the first motor is used to drive a propeller to rotate, the moisture absorption sheet is attached to the inner wall of the accommodation cavity near the driver and is separated from the driver.

42. The propulsor of claim 40, wherein, The electric control device includes a steering controller for controlling a second motor to operate, and the second motor is used to drive the propeller to steer, the moisture absorption sheet is attached to the inner wall of the accommodation cavity near the steering controller and is separated from the steering controller.

43. The propulsor of claim 40, wherein, The electric control device includes a lifting controller for controlling a third motor to operate, and the third motor is used to drive the propeller to lift, the moisture absorption sheet is attached to the inner wall of the accommodation cavity near the lifting controller and is separated from the lifting controller.

44. The propulsor of claim 40, wherein, The electric control device includes a central controller, which is responsible for processing interactive control of the propeller and external devices, the moisture absorption sheet is attached to the inner wall of the accommodation cavity near the central controller and is separated from the central controller.

45. The propulsor of claim 31, wherein, The accommodation cavity is a sealed cavity, the propeller is provided with a valve for connecting an external environment and the accommodation cavity, the valve allows external gas to enter and exit the accommodation cavity and prevents external water from entering the accommodation cavity, and the condensation collection structure includes a moisture absorption assembly arranged on one side of the valve for absorbing moisture on a gas suction path of the valve.

46. The propulsor of claim 45, wherein, The moisture absorption assembly comprises a fixed cover and a plurality of moisture absorption layers arranged in the fixed cover, the fixed cover covers the air intake path of the valve, the plurality of moisture absorption layers are arranged along the air intake path of the valve, and the fixed cover is provided with a drainage groove for guiding the liquid absorbed by the plurality of moisture absorption layers to a safe area.

47. The propulsor of claim 1, wherein, The condensation elimination structure comprises an anti-condensation coating arranged on the surface of the electric control device, and is used for preventing water molecules on the surface of the electric control device from gathering to form condensation.

48. The propulsor of claim 47, wherein, The anti-condensation coating is a nano-process coating.

49. The propulsor of claim 1, wherein, The condensation elimination structure comprises a heat insulation module, which is used for preventing heat of the heat source from being conducted to the surroundings of the electric control device, so as to reduce the temperature rise of water vapor in the surroundings of the electric control device.

50. The propulsor of claim 49, wherein, The heat source comprises a first motor used for driving the rotation of the propeller, the accommodation cavity has a nacelle area located in the underwater part of the propeller, a head area located in the water surface part of the propeller, and a duct area connecting the nacelle area and the head area, the first motor is located in the nacelle area, the electric control device is located in the head area or / and the duct area, and the heat insulation module is located in the nacelle area, so as to prevent the temperature rise of the nacelle area from being conducted to the duct area and the head area.

51. The propulsor of claim 50, wherein, The heat insulation module comprises a heat insulation coating arranged on the inner wall of the nacelle area.

52. The propulsor of claim 50, wherein, The heat insulation module comprises a heat insulation member arranged at the position where the nacelle area is connected to the duct area.

53. The propulsor of claim 1, wherein, The condensation elimination structure comprises an air-tight assembly arranged at the assembly gap of the water surface part of the propeller, and is used for preventing external gas from entering the accommodation cavity from the assembly gap.

54. The propulsor of claim 53, wherein, The propeller comprises a cable harness electrically connected to the electric control device, the assembly gap is formed between a plurality of cables inside the cable harness, and the end of the cable harness away from the electric control device is located outside the accommodation cavity.

55. The propulsor of claim 54, wherein, The air-tight assembly comprises an elastic element arranged at the assembly gap, the elastic element is elastically deformed along with the thermal expansion and contraction of the cables of the cable harness, and the elastic element blocks the assembly gap.

56. The propulsor of claim 55, wherein, The air-tight assembly further comprises a stabilizing member, which is used for clamping the periphery of the cable harness, so as to limit the expansion of the cable harness.

57. The propulsor of claim 53, wherein, The condensation elimination structure further comprises a pressure relief device in communication with the accommodation cavity, and is used for releasing the air pressure in the accommodation cavity.

58. The propulsor of claim 57, wherein, The pressure relief device comprises a deformable air bag in communication with the accommodation cavity, and is used for absorbing the gas in the accommodation cavity when the air pressure in the accommodation cavity is increased.

59. An aquatic movable apparatus, comprising: The water area movable equipment comprises the propeller according to any one of claims 1 to 58.

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