Shaftless propeller
Through the underwater propeller without shaft design, the motor drives the propeller to reduce the pressure of the liquid at the outlet of the second cavity, attracting the flow of liquid in the third cavity, solving the problem of rotating shaft winding, improving the propulsion efficiency and flow rate, and reducing the Noise and energy consumption.
Patent Information
- Application Number
- CN202421012610.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-10
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2034-05-10
AI Technical Summary
Due to the existence of a rotating shaft, existing underwater thrusters are prone to entanglement due to aquatic plants and other rope objects. When adding a flow shield to increase thrust, it will increase energy consumption, which is high in design and production costs, making it difficult to promote on a large scale.
Design a shaftless propeller, which drives the propeller to rotate by a motor, and the liquid in the first cavity and the second cavity is ejected through the outlet of the second cavity, causing the pressure at the outlet to be reduced, thereby attracting the flow of liquid in the third cavity. , increase the flow rate of the overall thruster, and the propulsion part has no rotation mechanism to avoid the risk of entanglement.
A greater liquid flow and propulsion effect is achieved, while reducing noise, avoiding winding problems caused by rotating mechanisms, and reducing energy consumption.
Smart Images
Figure CN222137006U_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of propellers, and in particular to a shaftless propeller. Background Art
[0002] There are several common underwater thrusters as marine power actuators, generally as follows:
[0003] One is a propeller-driven thruster without a shroud for protection. This type of thruster is simple and is the most commonly used type. However, since there is no shroud, the water flow is converted into rotational power through the propeller, which loses a lot of power, so the thrust generated will be smaller.
[0004] The second type is to add a deflector to the propeller, also called a ducted propeller. Due to the flow-guiding effect of the duct, this type of propeller will produce greater thrust, but the effect of the duct will also reduce the efficiency of the propeller and consume more energy.
[0005] Since both of the above-mentioned two propellers have a central rotating shaft, they both face the same problem, entanglement with aquatic plants and other rope-like objects. To solve this problem, there is a shaftless rim propeller. This propeller designs the duct part of the duct propeller into a motor, thereby eliminating the rotating shaft, thus effectively avoiding the entanglement of objects such as aquatic plants. However, due to the high technical level, high design and production costs of this propeller, there is no way to promote and try it out on a large scale. Summary of the invention
[0006] In view of this, an embodiment of the present specification provides a shaftless propeller, in which a propeller is driven to rotate by a motor, and the liquid in the first cavity and the second cavity is ejected through the outlet at the second cavity. The ejection of the liquid reduces the pressure at the outlet, thereby attracting the liquid in the third cavity to flow together, thereby increasing the flow rate of the overall propeller. The propulsion part has no rotating mechanism and there is no risk of entanglement.
[0007] The embodiments of this specification provide the following technical solutions: a shaftless propeller, comprising:
[0008] A shell, wherein a first cavity, a second cavity and a third through cavity are formed in the shell, the first cavity is connected to the second cavity, the second cavity is arranged around the third through cavity, a plurality of through grooves are opened on the shell, the through grooves are connected to the first cavity, an outlet is opened at a first end of the second cavity, and the outlet is connected to the third through cavity;
[0009] a motor, wherein the motor is installed in the first cavity;
[0010] A propeller is connected to the output end of the motor, and the motor is used to drive the propeller to rotate.
[0011] Preferably, the motor drives the propeller to rotate, and the medium in the first cavity and the second cavity is ejected through the outlet of the second cavity and moves along the first direction. Under the action of pressure, the medium in the third cavity also moves along the first direction.
[0012] Preferably, along the direction approaching the outlet, the inner wall of the second cavity gradually approaches the outer wall of the third through cavity.
[0013] Preferably, a guide block is provided in the second cavity, and an inclined guide surface is provided on the guide block, and the inclined guide surface gradually approaches the outer wall of the third through cavity.
[0014] Preferably, the third through cavity is a hollow cylindrical shape with openings at both ends, the first end of the third through cavity is connected to the first end of the second cavity, and an arc-shaped guide surface is provided at the second end of the third through cavity.
[0015] Preferably, the first cavity is in a hollow cylindrical shape, the first end of the first cavity is connected to the second cavity, and the motor is installed at the second end of the first cavity.
[0016] Preferably, the through grooves are long strip through grooves, and a plurality of groups of the long strip through grooves are provided, and the plurality of groups of the long strip through grooves are distributed in a ring shape around the axis of the first cavity.
[0017] Preferably, the motor is mounted on the second end of the first cavity by means of a plurality of bolts.
[0018] Preferably, the motor comprises an underwater motor.
[0019] Preferably, the propeller is used for underwater propulsion of ships, underwater equipment propulsion, diving underwater propulsion or liquid transportation.
[0020] Compared with the prior art, the at least one technical solution adopted in the embodiments of this specification can achieve the following beneficial effects:
[0021] External liquid can enter the first cavity, the second cavity and the third cavity, and the propeller is driven to rotate by the motor. The liquid in the first cavity and the second cavity is ejected through the outlet at the second cavity. The ejection of liquid reduces the pressure at the outlet, thereby attracting the liquid in the third cavity to flow together, increasing the flow rate of the overall propeller. The propulsion part has no rotating mechanism and there is no risk of entanglement. The motor is arranged in the first cavity, which can reduce noise at the same time. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.
[0023] Figure 1 It is a structural schematic diagram of the shaftless propeller provided by the present application;
[0024] Figure 2 yes Figure 1 Cross-sectional view at AA in the middle.
[0025] In the figure, 1, outer shell; 2, through groove; 3, third through cavity; 4, outlet; 5, bolt; 6, first cavity; 7, second cavity; 8, motor; 9, propeller; 10, guide block. DETAILED DESCRIPTION
[0026] The embodiments of the present application are described in detail below with reference to the accompanying drawings.
[0027] The following describes the implementation methods of the present application through specific examples, and those skilled in the art can easily understand other advantages and effects of the present application from the contents disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The present application can also be implemented or applied through other different specific implementation methods, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that, in the absence of conflict, the following embodiments and the features in the embodiments can be combined with each other. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work belong to the scope of protection of the present application.
[0028] It should be noted that various aspects of the embodiments within the scope of the appended claims are described below. It should be apparent that the aspects described herein can be embodied in a wide variety of forms, and any specific structure and / or function described herein is merely illustrative. Based on the present application, it should be understood by those skilled in the art that an aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number and aspect described herein can be used to implement the device and / or practice the method. In addition, other structures and / or functionalities other than one or more of the aspects described herein can be used to implement this device and / or practice this method.
[0029] It should also be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present application. The drawings only show components related to the present application rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.
[0030] Additionally, in the following description, specific details are provided to facilitate a thorough understanding of the examples. However, it will be understood by those skilled in the art that the aspects described may be practiced without these specific details.
[0031] The technical solutions provided by various embodiments of the present application are described below in conjunction with the accompanying drawings.
[0032] like Figure 1-Figure 2 As shown, a shaftless propeller comprises:
[0033] A shell 1, wherein a first cavity 6, a second cavity 7 and a third through cavity 3 are formed in the shell 1, wherein the first cavity 6 and the second cavity 7 are connected, and the second cavity 7 is arranged around the third through cavity 3, and a plurality of through grooves 2 are formed on the shell 1, and the through grooves 2 are connected to the first cavity 6, and an outlet 4 is formed at a first end of the second cavity 7, and the outlet 4 is connected to the third through cavity 3;
[0034] A motor 8, wherein the motor 8 is installed in the first cavity 6;
[0035] The propeller 9 is connected to the output end of the motor 8, and the motor 8 is used to drive the propeller 9 to rotate.
[0036] External liquid can enter the first cavity 6 through the through groove 2, and the liquid in the first cavity 6 flows into the second cavity 7. The external liquid can directly enter the third cavity 3, and the motor 8 is started. The propeller 9 is driven to rotate by the motor 8. Under the action of the propeller 9, the liquid in the first cavity 6 and the second cavity 7 is ejected through the outlet 4 at the second cavity 7. According to Bernoulli's principle, the liquid pressure is small where the liquid flow rate is high. Therefore, the ejection of the liquid reduces the pressure at the outlet 4, thereby attracting the liquid in the third cavity 3 to flow together, increasing the flow rate of the overall propeller and achieving a better propulsion effect. The propulsion part has no rotating mechanism and there is no risk of entanglement. The motor 8 is arranged in the first cavity 6, which can reduce noise at the same time.
[0037] It should be noted that the propeller 9 can adopt a propeller 9 with a large pitch angle. The design of the propeller 9 with a large pitch angle enables the blades to more effectively convert liquid into thrust during rotation. This design enables the propeller 9 to generate greater thrust at the same speed. For underwater propellers 9, the design of a large pitch angle helps to reduce the occurrence of cavitation erosion. The design of a large pitch angle can improve the water flow distribution on the surface of the blades and reduce the generation of bubbles, thereby improving the durability and service life of the propeller 9.
[0038] like Figure 1-Figure 2 As shown, in some embodiments, the motor 8 drives the propeller 9 to rotate, and the medium in the first cavity 6 and the second cavity 7 is ejected through the outlet 4 of the second cavity 7 and moves along the first direction. Under the action of pressure, the medium in the third cavity 3 also moves along the first direction. The propeller 9 is driven to rotate by the motor 8, and the medium (liquid) in the first cavity 6 and the second cavity 7 is ejected through the outlet 4 under the action of the propeller 9. Since the second cavity 7 is arranged around the first cavity 6, when the medium is ejected through the outlet 4 of the second cavity 7, the pressure at one end of the third cavity 3 close to the outlet 4 becomes smaller, and the medium in the third cavity 3 also moves along the first direction, thereby achieving a liquid flow rate greater than that of the propeller.
[0039] like Figure 1-Figure 2 As shown, in some embodiments, along the direction approaching the outlet 4, the inner wall of the second cavity 7 gradually approaches the outer wall of the third cavity 3, and along the direction of liquid flow (i.e., the first direction), the distance between the inner wall of the second cavity 7 and the third cavity 3 gradually decreases. When the liquid flows, the space of the second cavity 7 becomes smaller, and thus the flow speed of the liquid becomes faster, so that the pressure at the end of the third cavity 3 close to the outlet 4 is smaller, thereby increasing the flow speed of the liquid in the third cavity 3, thereby improving the propulsion effect.
[0040] like Figure 2 As shown, in some embodiments, a guide block 10 is arranged in the second cavity 7, and the guide block 10 is fixedly connected to the outer wall of the third through cavity 3. An inclined guide surface is arranged on the guide block 10, and the inclined guide surface gradually approaches the outer wall of the third through cavity 3. By arranging the guide block 10 in the second cavity 7, the guide block 10 can play a role of backflow when the liquid flows in the second cavity 7, thereby ensuring the flow effect of the liquid when it flows in the second cavity 7 along the first direction.
[0041] It should be noted that the guide block 10 may be an annular structure with an inclined guide surface arranged on the outside; or it may be a plurality of wedge-shaped blocks evenly distributed in the second cavity 7 .
[0042] like Figure 1-Figure 2As shown, in some embodiments, the third through cavity 3 is a hollow cylindrical shape with openings at both ends, the first end of the third through cavity 3 is connected to the first end of the second cavity 7, and an arc-shaped guide surface is provided at the second end of the third through cavity 3. The third through cavity 3 is set as a hollow cylindrical shape with openings at both ends to facilitate the flow of liquid in the third through cavity 3. At the same time, an arc-shaped guide surface is provided at the second end of the third through cavity 3, which can have a backflow effect on the liquid, thereby facilitating the external liquid to flow into the third through cavity 3.
[0043] like Figure 1-Figure 2 As shown, in some embodiments, the first cavity 6 is a hollow cylindrical shape, the first end of the first cavity 6 is connected with the second cavity 7, the motor 8 is installed at the second end of the first cavity 6, the first end of the first cavity 6 is connected with the second cavity 7, the liquid in the first cavity 6 can directly flow into the second cavity 7, and the motor 8 is installed at the second end of the first cavity 6 to ensure the fixing effect of the motor 8.
[0044] like Figure 1-Figure 2 As shown, in some embodiments, the through groove 2 is an elongated through groove, and a plurality of groups of the elongated through grooves 2 are provided, and the plurality of groups of the elongated through grooves 2 are distributed in a ring shape around the axis of the first cavity 6. By providing a plurality of annularly distributed elongated through grooves 2, external liquid can enter the first cavity 6 through the elongated through grooves 2.
[0045] like Figure 1-Figure 2 As shown, in some embodiments, the motor 8 is installed at the second end of the first cavity 6 by means of a plurality of bolts 5. The motor 8 is installed at the second end of the first cavity 6 by means of bolts 5. The installation operation of the motor 8 is relatively convenient and the fixing effect of the motor 8 can be ensured.
[0046] In some embodiments, the motor 8 includes an underwater motor. By using the underwater motor 8 to drive the propeller 9, the underwater motor 8 can adapt to the liquid environment and can continue to operate normally under diving conditions. The underwater motor 8 has waterproof and corrosion resistance and can be used in harsh underwater environments.
[0047] In some embodiments, the propeller is used for underwater propulsion of ships, underwater equipment propulsion, diving underwater propulsion or liquid transportation. The propeller can be used for ships, underwater equipment propulsion, diving or liquid transportation, and can be selected according to actual conditions.
[0048] The same or similar parts between the various embodiments in this specification can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the method embodiment described later, since it corresponds to the system, the description is relatively simple, and the relevant parts can be referred to the partial description of the system embodiment.
[0049] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.
Claims
1. A shaftless propeller, It is characterized in that include: A shell, wherein a first cavity, a second cavity and a third through cavity are formed in the shell, the first cavity is connected to the second cavity, the second cavity is arranged around the third through cavity, a plurality of through grooves are opened on the shell, the through grooves are connected to the first cavity, an outlet is opened at a first end of the second cavity, and the outlet is connected to the third through cavity; a motor, wherein the motor is installed in the first cavity; A propeller is connected to the output end of the motor, and the motor is used to drive the propeller to rotate.
2. The shaftless propeller according to claim 1, It is characterized in that The motor drives the propeller to rotate, and the medium in the first cavity and the second cavity is ejected through the outlet of the second cavity and moves along the first direction. Under the action of pressure, the medium in the third cavity also moves along the first direction.
3. The shaftless propeller according to claim 1, It is characterized in that Along the direction approaching the outlet, the inner wall of the second cavity gradually approaches the outer wall of the third through cavity.
4. The shaftless propeller according to claim 3, It is characterized in that A guide block is disposed in the second cavity, and an inclined guide surface is disposed on the guide block. The inclined guide surface gradually approaches the outer wall of the third through cavity.
5. The shaftless propeller according to claim 1, It is characterized in that The third through cavity is in the shape of a hollow cylinder with openings at both ends. The first end of the third through cavity is connected to the first end of the second cavity. The second end of the third through cavity is provided with an arc-shaped guide surface.
6. The shaftless propeller according to claim 1, It is characterized in that The first cavity is in a hollow cylindrical shape, a first end of the first cavity is connected to the second cavity, and the motor is installed at the second end of the first cavity.
7. The shaftless propeller according to claim 6, It is characterized in that The through slots are long strip-shaped through slots, and a plurality of groups of the long strip-shaped through slots are provided. The plurality of groups of the long strip-shaped through slots are distributed in a ring shape around the axis of the first cavity.
8. The shaftless propeller according to claim 6, It is characterized in that The motor is mounted on the second end of the first cavity by a plurality of bolts.
9. The shaftless propeller according to claim 1, It is characterized in that The motor comprises an underwater motor.
10. The shaftless propeller according to any one of claims 1 to 9, It is characterized in that The propeller is used for underwater propulsion of ships, underwater equipment propulsion, diving underwater propulsion or liquid transportation.