Improved heat dissipation structure of underwater propeller

Abstract

An improved heat dissipation structure of an underwater propeller, the improved heat dissipation structure comprising: a housing device (10), which comprises a machine housing (11), wherein at least a front control accommodating chamber (111) and a rear motor accommodating chamber (150), which are closed, are provided in the machine housing (11); a circuit control device (20), which is arranged in the control accommodating chamber (111); a battery device (30), which is linked to the front end of the machine housing (11); a motor device (40), which comprises a motor (42) arranged in the motor accommodating chamber (150), wherein a front motor cooling chamber (410) is formed at the front end of a motor housing, a rear motor cooling chamber (411) is formed at the rear end of the motor, the front motor cooling chamber (410) and the rear motor cooling chamber (411) are filled with a cooling oil (100), and a motor transmission rod (420) protrudes from the rear end of the motor; and a turbofan device (60), which comprises a turbofan rotor (61), wherein the turbofan rotor (61) is fixedly connected to the motor transmission rod (420), and a plurality of fan blades (62) are provided at the periphery of the turbofan rotor. The present invention can improve the heat dissipation effect of the whole motor, and achieves comprehensive and efficient heat dissipation of the motor and a higher level of motor usage safety.

Description

Improved heat dissipation structure of underwater thruster Technical Field

[0001] The present invention relates to an underwater propeller structure, and in particular to an improved heat dissipation structure of an underwater propeller that provides excellent heat dissipation effect for heat sources such as motors and circuit boards, thereby actively improving the safety of its use. Background Art

[0002] Diving is a popular recreational activity, including ocean and cave diving. Underwater propulsion systems (APUs) have become a popular diving aid, designed to assist divers with physical strength, speed, and range. APUs are primarily powered by motors, which must constantly run at high speeds to provide a constant supply of power. This creates a safety concern for motor heat dissipation, as overheating and failure can lead to unexpected dangers.

[0003] Conventional underwater propeller heat dissipation technology, such as Taiwan Patent No. TWM505452, provides an underwater propeller capable of improving heat dissipation, comprising a shroud, a heating element, and a heat dissipation element; the shroud includes a front end, a rear end, a chamber defined by a shroud, and a heat dissipation hole communicating with the chamber; the heating element is accommodated in the chamber; the heat dissipation element is accommodated in the chamber and includes a heat absorbing end adjacent to the heating element, and a heat dissipation end opposite the heat absorbing end and communicating with the outside world via the heat dissipation hole. By providing the heat dissipation element in contact with the outside world, the efficiency of heat conduction can be improved, thereby quickly conducting the heat energy of the heating element to the outside world and improving the heat dissipation effect.

[0004] However, the conventional heat dissipation technology for underwater propulsion systems primarily targets a heat-generating component that contacts one end of the motor within the housing, dissipating heat through conduction through the heat dissipation component. This results in slow and ineffective heat dissipation. Furthermore, since the heat dissipation technology cannot effectively dissipate heat from the motor at the same time, it still suffers from operational deficiencies in heat dissipation, making it a suboptimal design. Therefore, addressing these deficiencies in conventional heat dissipation technology for underwater propulsion systems is an important issue that the industry and individuals with insight should address and overcome.

[0005] To this end, in view of the shortcomings of conventional underwater propulsion systems in heat dissipation technology and the fact that their structural designs are not ideal, the inventors of this case immediately began to develop a solution, hoping to develop an improved heat dissipation structure for underwater propulsion systems that is more comprehensive, efficient, and safer to use, in order to serve the public and promote the development of this industry. This invention was thus created after much deliberation.

[0006] Summary of the Invention

[0007] The purpose of the present invention is to provide an improved heat dissipation structure for an underwater propeller, which can provide a heat dissipation effect for the entire motor, and has comprehensive and efficient motor heat dissipation and is safer to use.

[0008] Another object of the present invention is to provide an improved heat dissipation structure for an underwater thruster, which can simultaneously provide excellent heat dissipation effect for the circuit board module, thereby ensuring the normal operation of the electronic control circuit and actively improving the overall safety benefits of the underwater thruster.

[0009] To achieve the above-mentioned purpose, the technical means adopted by the present invention are as follows:

[0010] The present invention provides an improved heat dissipation structure for an underwater propeller, comprising: a housing device, comprising a machine housing, wherein the machine housing has at least a control chamber at the front and a motor chamber at the rear, and a partition is provided between the control chamber and the motor chamber; a circuit control device, comprising a circuit board, which is provided in the control chamber; a battery device, comprising a battery housing and a battery, wherein the battery housing is connected to the front end of the machine housing, a closed battery chamber is formed inside the battery housing, and the battery is provided in the battery chamber; a motor device, comprising a motor housing and a motor, wherein the motor housing is provided in the motor chamber and is used to accommodate the battery. A motor, wherein the front end of the motor housing is abutted and fixed to the compartment portion to form a motor front cooling chamber, and the motor front cooling chamber is filled with cooling oil. The rear end of the motor housing is abutted and fixed to an end socket fixed to the machine casing, so that a motor rear cooling chamber is formed between the motor and the end socket, and the motor rear cooling chamber is filled with cooling oil. A motor transmission rod protrudes from the rear end of the motor, and the motor transmission rod passes through a central shaft hole of the end socket; a turbofan device includes a turbofan rotor, which is fixed to the motor transmission rod and is driven to rotate by the motor. A plurality of fan blades are arranged around the turbofan rotor to generate forward propulsion.

[0011] In this embodiment, the housing has a housing chamber, the control chamber is located in the housing chamber, and the rear end of the housing is connected to a power unit for arranging the motor chamber.

[0012] In this embodiment, a display screen is provided on the outer side of the rear end of the housing, and the power unit is provided with a plurality of ribs radiating outward. The plurality of ribs are used to connect and support a ring frame, and the ring frame is provided with a plurality of grid plates at intervals, and the ribs are provided with a handle on the outer side of the ring frame.

[0013] In this embodiment, the outer edge of the front end of the power part is provided with at least one communicating flow inlet and flow outlet.

[0014] In this embodiment, the circuit board is formed as a sealed module board, and the control chamber is filled with cooling oil.

[0015] In this embodiment, the circuit control device further includes an inner partition and an outer partition. The inner partition is fixed to the front end of the control chamber and is provided with a through opening. The outer partition is fixed to the front end of the casing chamber. The casing chamber and the control chamber are simultaneously filled with the cooling oil.

[0016] In this embodiment, the front end of the battery compartment is sealed with a head end plate, and the front end of the battery housing is fixed with a head end cover, which is used to seal the head end plate and the battery compartment.

[0017] In this embodiment, a motor support rod protrudes from the front end of the motor, and the motor support rod is pivotally connected to the compartment portion.

[0018] In this embodiment, a bearing for pivotally connecting the motor support rod is provided on the compartment portion.

[0019] In this embodiment, the front end of the end socket has an end chamber connected to the central shaft hole, and the outer ring of the end socket is provided with a plurality of positioning seats, each of which is connected to a fixing seat of the power part by a fixing screw.

[0020] The improved heat dissipation structure of an underwater propeller of the present invention, through the above-mentioned structure, can provide excellent heat dissipation effect for the entire motor, and has comprehensive and efficient motor heat dissipation and is safer for motor use; at the same time, the present invention can also provide excellent heat dissipation effect for the circuit board module, thereby ensuring the normal operation of the electronic control circuit, thereby actively improving the overall safety benefits of the underwater propeller.

[0021] In order to enable a further understanding and recognition of the technical features and the effects achieved by the present invention, preferred embodiment diagrams and detailed descriptions are provided as follows. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] FIG1 is a schematic diagram of the three-dimensional structure of the present invention.

[0023] FIG2 is a schematic diagram of the structural decomposition of the present invention.

[0024] FIG3 is a schematic cross-sectional view of the three-dimensional structure of the present invention.

[0025] FIG4 is a partial enlarged schematic diagram of FIG3 .

[0026] FIG5 is a schematic cross-sectional view of a partial structure of the rear end of the present invention.

[0027] FIG6 is a perspective schematic diagram of the rear end partial structure of the present invention.

[0028] FIG7 is a schematic perspective cross-sectional view of a partial structure of the rear end of the present invention.

[0029] FIG8 is a second schematic cross-sectional view of the local structure of the rear end of the present invention.

[0030] DESCRIPTION OF REFERENCE NUMERALS: underwater propulsion device 1; housing device 10; circuit control device 20; housing 11; housing chamber 110; control chamber 111; compartment 12; display screen 13; power unit 15; motor chamber 150; rib 151; ring frame 152; grid 153; handle 154; fixing seat 16; diversion inlet 17; diversion outlet 18; circuit board 21; inner ring gasket 22; inner partition 23; opening 230; outer ring gasket 24; outer partition 25; battery device 30; battery housing 31; battery chamber 310; battery 32; head end plate 33; Head end cover 34; motor assembly 40; motor housing 41; motor 42; water stop ring gasket 43; water stop ring gasket 44; motor stator 421; motor rotor 422; motor transmission rod 420; motor support rod 423; bearing 45; sealing assembly 46; bearing 47; motor front cooling chamber 410; motor rear cooling chamber 411; end assembly 50; end socket 51; end chamber 510; central shaft hole 52; positioning seat 54; fixing screw 53; turbofan assembly 60; turbofan rotor 61; fixing through-hole 610; screw 611; fan blade 62; cooling oil 100. DETAILED DESCRIPTION

[0031] Please refer to the accompanying drawings for illustrating an embodiment of the heat dissipation improvement structure of an underwater propeller according to the present invention. The present invention includes an underwater propeller 1, which includes a housing device 10, a circuit control device 20, a battery device 30, a motor device 40, an end device 50, and a turbofan device 60. As shown in Figures 1 to 4, the housing device 10 includes a machine housing 11. The machine housing 11 has an annular or cylindrical structure. The machine housing 11 has a housing chamber 110, and the housing chamber 110 also has a control chamber 111. The rear end of the control chamber 111 (as shown in the direction B in Figures 1 and 2) is oriented in the opposite direction. The housing 11 is provided with a compartment 12; a display screen 13 is provided on the outer side of the rear end of the housing 11, and a power unit 15 is connected to the rear end of the housing 11. The inner side of the power unit 15 has a motor chamber 150. The power unit 15 has a plurality of ribs 151 radiating outward. The plurality of ribs 151 are used to connect and support a ring frame 152. The ring frame 152 is also provided with a plurality of grid plates 153 at intervals, and the ribs 151 are provided with a handle 154 at an appropriate position on the outer side of the ring frame 152 for the diver to hold; and as shown in Figures 6 and 7, the outer ring of the power unit 15 is provided with a plurality of fixing seats 16. Furthermore, at appropriate locations of the housing 11, for example, at the outer edge of the front end of the power unit 15, at least one communicating diversion inlet 17 and a diversion outlet 18 are provided. The diversion inlet 17 allows the incoming water flow to enter the internal flow channel of the housing 11 (not shown) and then flow out through the diversion outlet 18, thereby improving the heat dissipation of the housing 11 and stabilizing the propulsion vortex at the rear end of the underwater propeller 1 (described in detail below).

[0032] The circuit control device 20 includes a circuit board 21, which is a sealed modular board and is located within the control chamber 111. The circuit control device 20 further includes an inner ring gasket 22, an inner partition plate 23, an outer ring gasket 24, and an outer partition plate 25. The inner ring gasket 22 is located at the front edge of the control chamber 111 (in direction A as shown in Figures 1 and 2, the same below), and the inner partition plate 23 is fixed to the front edge of the control chamber 111. The inner partition plate 23 is also provided with a through opening 230. The outer ring gasket 24 is located at the front edge of the casing chamber 110, and the outer partition plate 25 is fixed to the front edge of the casing chamber 110, so that the control chamber 111 is located within the sealed casing chamber 110. In this embodiment, the casing chamber 110 and the control chamber 111 are filled with cooling oil 100 (see Figure 5).

[0033] In the aforementioned structure, since the circuit board 21 is provided with a plurality of electronic components, such as a processor (COU), a chip, etc., which is also a heat source, and the circuit board 21 is constructed as a sealed module board, the circuit board 21 can be conveniently immersed in the cooling oil 100. By utilizing the excellent heat dissipation and conduction efficiency of the cooling oil 100, the circuit board 21 is prevented from overheating and causing malfunction of the underwater propeller 1, thereby actively ensuring the safety of the use and operation of the underwater propeller 1.

[0034] The battery device 30 includes a battery housing 31 and a battery 32. The battery housing 31 is connected to the front end of the machine housing 11. A battery chamber 310 is formed inside the battery housing 31. The battery chamber 310 is blocked / isolated from the machine housing 110 by the outer partition 25, so that the battery chamber 310 is in a closed state. A head end plate 33 is sealed at the front end of the battery chamber 310, and a head end cover 34 is fixed to the front end of the battery housing 31 to cover the head end plate 33 and the battery chamber 310.

[0035] The motor device 40 is arranged in the motor chamber 150. The motor device 40 includes a motor housing 41 and a motor 42. The motor housing 41 is arranged in the motor chamber 150 to accommodate the motor 42. The rear end of the motor housing 41 is abutted and fixed to the end device 50, and a water stop ring gasket 43 is provided therebetween. The front end of the motor housing 41 is abutted and fixed to the compartment portion 12, and a water stop ring gasket 44 is provided therebetween. Furthermore, the motor 42 includes a motor stator 421 at the outer ring portion and a motor rotor 422 at the inner ring portion. The motor 42 (motor rotor 422) protrudes with a motor transmission rod 420 at the rear end and a motor support rod 423 at the front end. A bearing 45 and a sealing assembly 46 are successively sleeved / pierced on the motor transmission rod 420. The motor support rod 423 is pivotally connected to a bearing 47. The bearing 47 is arranged on the compartment portion 12, and the space between the motor 42 and the compartment portion 12 forms a motor front cooling chamber 410. The motor front cooling chamber 410 is filled with cooling oil 100.

[0036] Please refer to Figures 5 to 8. The end device 50 is fixed to the power unit at the rear end of the machine housing 11. The end device 50 includes a end socket 51. The front end of the end socket 51 has an end chamber 510 and a central shaft hole 52 formed from the end chamber 510 to the rear. The central shaft hole 52 is for the motor transmission rod 420 to pass through. The outer ring of the end socket 51 is provided with a plurality of positioning seats 54, as shown in Figures 6 and 7, each positioning seat 54 is fixed to the fixing seat 16 of the power unit 15 (machine housing 11) by a fixing screw 53, so that the end socket 51 is combined with the power unit 15 (machine housing 11), the end socket 51 is abutted and fixed with the motor housing 41, and the space between the end socket 51 and the motor 42 forms a motor rear cooling chamber 411, and the motor rear cooling chamber 411 is filled with cooling oil 100.

[0037] The above-mentioned structure enables the motor front cooling chamber 410 to be provided in front of the motor 42, and the motor rear cooling chamber 411 to be provided behind the motor 42. The motor front cooling chamber 410 and the motor rear cooling chamber 411 are both water-proof enclosed spaces and are filled with cooling oil 100. In other words, the gap space between the motor 42 and the motor housing 41 is filled with cooling oil 100. Through the heat conduction of the cooling oil 100, the motor 42 has excellent heat dissipation efficiency, which can actively avoid the potential safety risks caused by motor overheating.

[0038] The turbofan device 60 is located at the rear end of the underwater propeller 1. The turbofan device 60 includes a turbofan rotor 61. One end (the rear end) of the turbofan rotor 61 has a fixed through-hole 610 and is fixed to the motor drive rod 420 by a screw 611, so as to be connected / driven to rotate by the motor 42. The turbofan rotor 61 is surrounded by a plurality of blades 62. The plurality of blades 62 rotate with the rotation of the motor drive rod 420 to generate forward propulsion. The plurality of blades 62 (turbofan device 60) is located within the annular frame 152, so that it can be properly protected.

[0039] Therefore, when a diver grasps the handle 154, as shown in FIG1 , the head cover 34 of the battery device 30 is located at the front end (i.e., the position farthest from the diver), and the diver can view the operating status of the underwater propulsion device 1 through the display screen 13. The motor 42 (motor transmission rod 420) is driven to rotate the turbofan rotor 61 / plural blades 62, thereby providing forward propulsion.

[0040] The improved heat dissipation structure of an underwater propeller of the present invention, through the above-mentioned structure, can provide excellent heat dissipation effect for the entire motor, and has comprehensive and efficient motor heat dissipation and is safer for motor use; at the same time, the present invention can also provide excellent heat dissipation effect for the circuit board module, thereby ensuring the normal operation of the electronic control circuit, thereby actively improving the overall safety benefits of the underwater propeller.

[0041] The present invention has been described in more detail through the above preferred specific embodiments, but the present invention is not limited to the above exemplified embodiments. Various changes and modifications to these structures within the scope of the technical ideas disclosed in the present invention still fall within the patent scope of the present invention.

Claims

1. An improved heat dissipation structure of an underwater propeller, characterized in that: Included are: A housing device includes a housing, wherein the housing has at least a control chamber at the front and a motor chamber at the rear, and a compartment is provided between the control chamber and the motor chamber; A circuit control device includes a circuit board, which is arranged in the control chamber; A battery device includes a battery housing and a battery, wherein the battery housing is fixed to the front end of the housing, a closed battery compartment is formed inside the battery housing, and the battery is arranged in the battery compartment; A motor device, comprising a motor housing and a motor, the motor housing being arranged in the motor housing and used for accommodating the motor, the front end of the motor housing being abutted and fixed to the compartment portion to form a motor front cooling chamber, the motor front cooling chamber being filled with cooling oil, the rear end of the motor housing being abutted and fixed to an end socket fixed to the machine housing, so that a motor rear cooling chamber is formed between the motor and the end socket, the motor rear cooling chamber being filled with the cooling oil, a motor transmission rod protruding from the rear end of the motor, the motor transmission rod passing through a central shaft hole of the end socket; A turbofan device includes a turbofan rotor, which is fixed to the motor transmission rod and driven by the motor to rotate. A plurality of blades are arranged around the turbofan rotor to generate forward propulsion.

2. The improved heat dissipation structure of the underwater propeller according to claim 1, characterized in that: The housing has a housing chamber, the control chamber is located in the housing chamber, and the rear end of the housing is connected to a power unit for setting the motor chamber.

3. The improved heat dissipation structure of the underwater propeller according to claim 2, characterized in that: A display screen is arranged outside the rear end of the machine housing, and a plurality of ribs are arranged radiating outward from the power unit. The plurality of ribs are used to connect and support a ring frame. The ring frame is provided with a plurality of grid sheets at intervals, and the rib is provided with a handle at the outer position of the ring frame.

4. The improved heat dissipation structure of the underwater propeller according to claim 2, characterized in that: The outer edge of the front end of the power part is provided with at least one flow guide inlet and one flow guide outlet communicating with each other.

5. The improved heat dissipation structure of the underwater propeller according to claim 2, characterized in that: The circuit board is composed of a sealed module board, and the control chamber is filled with cooling oil.

6. The improved heat dissipation structure of the underwater propeller according to claim 5, characterized in that: The circuit control device also includes an inner partition and an outer partition. The inner partition is fixed to the front end of the control chamber and is provided with a through opening. The outer partition is fixed to the front end of the casing chamber. The casing chamber and the control chamber are simultaneously filled with the cooling oil.

7. The improved heat dissipation structure of the underwater propeller according to claim 1, characterized in that: The front end of the battery compartment is sealed with a head end plate, and the front end of the battery housing is fixed with a head end cover, which is used to seal the head end plate and the battery compartment.

8. The improved heat dissipation structure of the underwater propeller according to claim 1, characterized in that: The front end of the motor protrudes to have a motor support rod, and the motor support rod is pivotally connected to the compartment part.

9. The improved heat dissipation structure of the underwater propeller according to claim 8, characterized in that: The compartment portion is provided with a bearing for pivotally connecting the motor support rod.

10. The improved heat dissipation structure of the underwater propeller according to claim 2, characterized in that: The front end of the end socket is provided with an end chamber connected to the central shaft hole. The outer ring of the end socket is provided with a plurality of positioning seats, and each positioning seat is connected to a fixing seat of the power part by a fixing screw.

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