Abstract:
The invention provides a jet propeller for air-charging, and an outboard motor having the same. In addition to the propelling function, the present invention can be coupled with special function nozzle device to use the same apparatus achieving the following functions: air-charging, air pumping, as a spray gun, high-pressure water spray (fire fighting or cleaning), and water pumping. The present invention does not use the ordinary propeller blade, which is not easy to harm the human being or marine creatures, or to be collided and wrapped by miscellaneous objects in the water, and provides a multi-purpose, safe and environment-friendly propeller.

Description:
BACKGROUND OF THE INVENTION 
       [0001]    1. Field of the Invention 
         [0002]    The invention relates to a jet propeller for air-charging, and an outboard motor having the same, and particularly to a jet propeller for air-charging, which, in addition to the propelling function, can be coupled with special function nozzle device in order to use the same apparatus achieving the following functions: air-charging, air pumping, as a spray gun, high-pressure water spray (fire fighting or cleaning), and water pumping, and an outboard motor having the jet propeller for air-charging. 
         [0003]    2. Description of the Prior Art 
         [0004]    The ships advance with the engine and the propeller, but the cavitation of the propeller often cause the propeller into idle operation and the ship speed is thus slow down. According to the “Bernoulli theorem”, the faster the rotation speed of the propeller is, the smaller the pressure of the water flow will be, and the water flow will evaporate. When the surface pressure of the blade of the propeller becomes lower than the vapor pressure of the sea water, a phenomenon of “propeller cavitation” is generated. The bubbles generated by the blades are the main cause for the vibration and acoustic noise of a ship. Serious burst of the bubbles will decrease the efficiency of the propeller, make the propeller into idle operation, and slow down the ship speed, and even gear-shaped spots will turn up on the blade of the propeller and damage the propeller. 
         [0005]    Meanwhile, when a traditional propeller propulsor is in rotation, a resistance force face and a drag force face are generated behind the blade, slowing down the ship speed. The size of the blade of the propeller will not only be related to the amount of propelling force, but also form the resistance force face and the drag force face, a part of ship speed is thus eliminated. Additionally, the propeller is easily wrapped around and collided by miscellaneous objects in the water, thereby easily damaging the propeller. 
         [0006]    Although the spiral propeller blade structure of the conventional International Patent Publication EP0334737 “Rotary non-positive machine” enhances the water flow and improves the generated resistance force and drag force, it is still a propeller-blade structure, all inferior phenomena due to the abovementioned “Bernoulli theorem” are not overcome. 
         [0007]    Nowadays, the main improvement in more advanced jet propulsors is to install the traditional propeller propulsor in the interior of a tube. By installing the propeller in the interior of a tube, the resistance force and the drag force generated by the propeller are therefore minimized, and the propelling speed is thereby increased. However, the jet propulsor still uses a propeller which is easily wrapped around by miscellaneous objects, inferior phenomena due to the “Bernoulli theorem” cannot be overcome, and the problem of the resistance force and the drag force is still not solved completely. A jet propulsor cannot use a longer tube, a larger pressure is thus not generated to increase the propulsion performance. 
         [0008]    Conventional Taiwan Patents 572842, 547573, 528699, 339756 and USA patents US005181868A and US005083435A have disclosed propulsors having different functions in different ways, but these patents still use propellers, the problems of the abovementioned prior art are therefore not solved. 
         [0009]    Furthermore, the prior art of the present invention from Taiwan Patent No. I,296599 provides a beam jet propeller (USA patent U.S. Pat. No. 7,497,657B2), which increases the friction force of the fluid by spiral or linear diversion protrusions or diversion grooves on the inner wall of a tube, such that original loose fluid can be twisted together into a beam shape under pressure/rotation/extrusion and form in-tube fluid pressure. The beam fluid may generate a strong propelling force, so as to propel the vehicle. 
         [0010]    However, the abovementioned patents only provide the propelling functions without other additional functions. If the vehicle using the roller propeller is an inflated vehicle, the propeller may be employed as an inflating apparatus, and also be employed as a propeller after inflation. Thus, the propeller may achieve both the environmental protection and convenience effect under repetitive usage. Besides, the vehicle after inflation has a certain buoyancy, the gas inside the vehicle can be pumped out during idle operation to reduce the volume and weight; moreover, providing the fire fighting, cleaning and water pumping functions only by replacing the nozzle. Therefore, it is a problem needed to be rapidly solved in the industry about how to design a multi-functional propeller. 
       SUMMARY OF INVENTION 
       [0011]    It is one object of the present invention to provide a jet propeller without propeller blades, which is not easy to harm the human being or marine creatures, or to be collided and wrapped by miscellaneous objects in the water, and being a multi-purpose, safe and environment-friendly propeller. 
         [0012]    In addition to the propelling function, the jet propeller and the outboard motor according to the present invention can be coupled with special function nozzle device in order to use the same apparatus achieving the following functions: air-charging, air pumping, as a spray gun, high-pressure water spray (fire fighting or cleaning), and water pumping. 
         [0013]    It is one object of the present invention to provide a power propeller for air-charging. 
         [0014]    It is one object of the present invention to provide a safe and environment-friendly propeller. 
         [0015]    A jet propeller achieving the abovementioned objects comprises: a first diversion structure for pressurizing an in-tube fluid; a roller-type diversion tube, which has a second diversion structure for further pressurizing the in-tube fluid pressurized by the first diversion structure inside the roller-type diversion tube; and, a shaft for driving the first diversion structure and the second diversion structure to rotate, such that the in-tube fluid will be pressurized by the rotation of the first diversion structure and the roller-type diversion tube to form a in-tube fluid pressure for generating a propelling force. 
         [0016]    The first diversion structure is configured at the front end of the shaft, and the length of configuration distance between the first diversion structure and the roller-type diversion tube is substantially the length of diameter of the first diversion structure. 
         [0017]    The first diversion structure is a fluid pressurizing diversion protrusion. 
         [0018]    The roller-type diversion tube is designed as a parallel tube roller or a hollow tube roller with a hollow space tapered from one end to the other end. 
         [0019]    The second diversion structure is at least one or a plurality of spiral diversion protrusions or a propeller with blades. 
         [0020]    The jet propeller according to the present invention further comprises a power device for driving the shaft. 
         [0021]    The jet propeller according to the present invention further comprises a coupling tube pressurizing device, in which the coupling tube pressurizing device is connected with the roller-type diversion tube and used for pressurizing air to inflate. 
         [0022]    The coupling tube pressurizing device comprises: a coupling tube, a pressurizing tube, a pressurizing axle rod, a coupling tube device and a press-button device. The coupling tube is connected with the roller-type diversion tube through the press-button device. The pressurizing tube is configured inside the coupling tube, and a pressurizing tube wall and a pressurizing structure are configured in the pressurizing tube. The pressurizing axle rod is connected with the shaft and used for driving the pressurizing structure to rotate, and the coupling tube device is located at one end of the coupling tube. 
         [0023]    The pressurizing tube wall is a wing-shape design. 
         [0024]    The pressurizing structure comprises a high-pressure fan, a low-pressure fan, and a high-speed fan. 
         [0025]    The coupling tube device is further connected with a feed pipe or special function nozzle device for air-charging, fluid suction, water jet or air jet. 
         [0026]    The special function nozzle device is an inflating nozzle device, a fluid suction nozzle device, a spray gun nozzle device, or a high-pressure water jet device. 
         [0027]    Another jet propeller achieving the abovementioned objects comprises: a roller-type diversion tube, which has a diversion structure within the roller-type diversion tube for pressurizing the in-tube fluid; a shaft for driving the diversion structure to rotate, such that the in-tube fluid will be pressurized by the rotation of the roller-type diversion tube; and, a coupling tube pressurizing device, in which the coupling tube pressurizing device is connected with the roller-type diversion tube and used for further pressurizing the in-tube fluid pressurized by the diversion structure. 
         [0028]    The diversion structure is at least one or a plurality of spiral diversion protrusions, or a propeller with blades. 
         [0029]    The coupling tube pressurizing device comprises: a coupling tube, a pressurizing tube, a pressurizing axle rod, a coupling tube device and a press-button device. The coupling tube is connected with the roller-type diversion tube through the press-button device. The pressurizing tube is configured inside the coupling tube, and a pressurizing tube wall and a pressurizing structure are configured in the pressurizing tube. The pressurizing axle rod is connected with the shaft and used for driving the pressurizing structure to rotate, and the coupling tube device is located at one end of the coupling tube. 
         [0030]    The pressurizing tube wall is a wing-shape design. 
         [0031]    The pressurizing structure comprises a high-pressure fan, a low-pressure fan, and a high-speed fan. 
         [0032]    The coupling tube device is further connected with a feed pipe or special function nozzle device for air-charging, fluid suction, water jet or air jet. 
         [0033]    The special function nozzle device is an inflating nozzle device, a fluid suction nozzle device, a spray gun nozzle device, or a high-pressure water jet device. 
         [0034]    An outboard motor achieving the abovementioned objects comprises: a jet propeller, which includes a first diversion structure, a roller-type diversion tube, and a shaft; a power device for driving the shaft; and, a power control device for activating/deactivating the power device in operation; wherein, the roller-type diversion tube includes a second diversion structure therein for further pressurizing the in-tube fluid pressurized by the first diversion structure; and, by activating the power device in operation with the power control device to drive the first diversion structure and the second diversion structure to rotate, so as to pressurize the in-tube fluid, and form the in-tube fluid pressure for generating a propelling force. 
         [0035]    The outboard motor according to the present invention further comprises a direction control device for controlling the traveling direction. 
         [0036]    The first diversion structure is configured at the front end of the shaft, and the length of configuration distance between the first diversion structure and the roller-type diversion tube is substantially the length of diameter of the first diversion structure. 
         [0037]    The first diversion structure is a fluid pressurizing diversion protrusion. 
         [0038]    The second diversion structure is at least one or a plurality of spiral diversion protrusions or a propeller with blades. 
         [0039]    The jet propeller according to the present invention further comprises a coupling tube pressurizing device, in which the coupling tube pressurizing device is connected with the roller-type diversion tube and used for pressurizing the air to inflate. 
         [0040]    The coupling tube pressurizing device comprises: a coupling tube, a pressurizing tube, a pressurizing axle rod, a coupling tube device and a press-button device. The coupling tube is connected with the roller-type diversion tube through the press-button device. The pressurizing tube is configured inside the coupling tube, and a pressurizing tube wall and a pressurizing structure are configured in the pressurizing tube. The pressurizing axle rod is connected with the shaft, and is used to drive the pressurizing structure to rotate, and the coupling tube device is located at one end of the coupling tube. 
         [0041]    The pressurizing tube wall is a wing-shape design. 
         [0042]    The pressurizing structure comprises a high-pressure fan, a low-pressure fan, and a high-speed fan. 
         [0043]    The coupling tube device is further connected with a feed pipe or special function nozzle device for air-charging, fluid suction, water jet or air jet. 
         [0044]    The special function nozzle device is an inflating nozzle device, a fluid suction nozzle device, a spray gun nozzle device, or a high-pressure water jet device. 
     
    
     
       BRIEF DESCRIPTION OF DRAWINGS 
         [0045]    The patent or application file contains at least one drawing executed in color. Copies of this patent or patent application publication with color drawing(s) will be provided by the office upon request and payment of the necessary fee. 
           [0046]      FIG. 1  is a diagram for a jet propeller for air-charging according to the present invention; 
           [0047]      FIG. 2  is a diagram for a jet propeller for air-charging applied in an inflated vehicle device according to the present invention; 
           [0048]      FIG. 3  is a diagram for a coupling tube pressurizing device according to the present invention; 
           [0049]      FIG. 4  is an assembly diagram for a jet propeller and a coupling tube pressurizing device; 
           [0050]      FIG. 5  is a diagram for a jet propeller and a coupling tube pressurizing device after assembly in association with a connection with an inflation nozzle device according to the present invention; 
           [0051]      FIG. 6  is a diagram for a jet propeller and a coupling tube pressurizing device after assembly in association with a connection with a fluid suction nozzle device according to the present invention; 
           [0052]      FIG. 7  is a diagram for a jet propeller and a coupling tube pressurizing device after assembly in association with a connection with a high-pressure water jet device according to the present invention; 
           [0053]      FIG. 8  is a diagram for  FIG. 5  to  FIG. 7  applied in an inflated vehicle device according to the present invention; 
           [0054]      FIG. 9  is a diagram for an outboard motor without differential gear according to the present invention; 
           [0055]      FIG. 10  is a diagram for an outboard motor with differential gear according to the present invention; 
           [0056]      FIG. 11  is a diagram for an outboard motor with universal joint according to the present invention; 
           [0057]      FIG. 12  is a cross-sectional diagram for speed distribution of fluid simulation test according to the present invention; and, 
           [0058]      FIG. 13  is a pressure distribution diagram of diversion protrusions in fluid simulation test according to the present invention. 
       
    
    
     DETAILED DESCRIPTION OF THE EMBODIMENTS 
       [0059]    Please refer to  FIG. 1 , which is a diagram of a jet propeller for air-charging according to the present invention. The jet propeller  210  according to the present invention comprises: a first diversion structure for pressurizing an in-tube fluid; a roller-type diversion tube  220 , which has a second diversion structure inside the roller-type diversion tube  220  for further pressurizing the in-tube fluid pressurized by the first diversion structure; and, a shaft  240  for driving the first diversion structure and the second diversion structure to rotate, such that the in-tube fluid will be pressurized by the rotation of the first diversion structure and the roller-type diversion tube  220  to form the in-tube fluid pressure for generating the propelling force. 
         [0060]    As shown, the jet propeller  210  according to the present invention further comprises a water inlet pipe  234 , a first diversion structure, a roller-type diversion tube  220  and a shaft  240 , which is configured inside the water inlet pipe  234 , and the first diversion structure is a fluid pressurizing diversion protrusion  232 , and the second diversion structure is at least one or a plurality of spiral diversion protrusions  222 . 
         [0061]    In this embodiment, the jet propeller  210  according to the present invention is basically a structure as a roller-type jet propeller  210 . When the fluid flows through a rotating roller-type jet propeller  210 , the fluid will first enter the water inlet pipe  234  (non-rotating) through a water inlet  230 ; then, the fluid will first go through the rotation of the fluid pressurizing diversion protrusion  232  within the tube, and the in-tube fluid will generate the fluid pressurizing phenomenon due to the pressure difference relation between the front and the rear side generated after rotation; then, the pressurized fluid starts entering the rotating roller diversion tube  220  within the water inlet pipe  234 . The fluid pressurizing diversion protrusion  232  is located at the portion of the shaft  240  protruding from the roller diversion tube  220 , such that the flow speed of the fluid entering the roller diversion tube  220  is increased to enhance the efficiency of the propeller. The fluid pressurizing diversion protrusion  232  cannot be too close to the roller diversion tube  220 , otherwise it will cause the chaos in the flow field. Thus, the optimized length of distance between the fluid pressurizing protrusion  232  configured in the front of the shaft  240  and the roller diversion tube is approximately the length of diameter of the fluid pressurizing diversion protrusion  232 . 
         [0062]    With the rotational speed along with the shaft  240  inside the roller diversion tube  220 , the spiral diversion protrusion  222  will further pressurize the fluid after pressurization, and the fluid will start generating flow rotation from the front to the back and accelerating motion. Because the pitch of the spiral diversion protrusion  222  employs the design of parallel type or front-wide-rear-narrow type, when the fluid is rotating in the roller-type jet propeller  210 , the fluid in the roller diversion tube  220  will gradually generate a pressure difference between the front and the rear side, so that the pressurized fluid will move toward the opening at the tail end. When the pressure difference in the tube is larger than the pressure outside the roller diversion tube  220 , the fluid in the tube will eject outwardly from the tail end of the roller diversion tube  220  and generate the fluid propelling force, and further form a reaction propelling force. Moreover, the spiral diversion protrusion  222  on the roller diversion tube  220  inside the jet propeller  210  can also be replaced with a propeller, so as to achieve the requirement for different propelling forces in design and in use. The tail end of the roller-type jet propeller  210  can also be connected with a coupling tube pressurizing device  360  and a special function nozzle device  280  for usage as air-charging, fluid suction, water pumping, air jet or water jet. (Please refer to  FIG. 3  and  FIG. 4 ) 
         [0063]    Furthermore, in this embodiment, the jet propeller  210  according to the present invention, based on the designed structure in the figure, can be suitable for applying in high-, mid-, and low-speed (such as electric engine, internal combustion engine) power device  310 . The generated propelling force is about 1-30 knots/hour, which is suitable for mid- and low-rotational-speed power device used in an aquatic vehicle, such as canoe, skiff, pneumatic boat, snorkeling vehicle, and diving machine. This figure is only an illustration of an embodiment, so that the usage is not only limited to aquatic or underwater vehicle, and can be applied in other applications, such as fluid power device, fluid engine, etc. 
         [0064]    Please refer to  FIG. 2 , which is a diagram of a jet propeller for air-charging applied in an inflated vehicle device according to the present invention. The inflated vehicle device  110  comprises a rudder stock  115 , a rudder  120 , a vehicle  305  and a power device  310 , wherein the vehicle  305  generally indicates a body for transporting or carrying or floating, such as transportation tool, boat, raft, ship, skiff, vessel, basin, diving machine, etc. The inflated vehicle device  110  is an aquatic vehicle, whose material may be suitable for all kinds of air-charging, and can be used to produce the aquatic vehicle, such as PVC, rubber, composite leather, reinforced plastic material, wiredrawing glassfiber, etc. which is characterized that the vehicle after air-charging is provided with a certain buoyancy, so the gas in the vehicle may be leaked when it is not used, so as to reduce the volume and weight. The aquatic vehicle indicated in the present invention is also certainly suitable or expanded to other non-inflated vehicle device; the rudder stock  115  is a linkage stock for controlling the rudder  120 ; the rudder  120  is to control the travelling direction of the inflated vehicle device  110 ; the power device  310  is a device generating the power energy to drive the aquatic vehicle. The present invention is preferred to be applied in an electric motor. If the aquatic vehicle needs larger power, the present invention can also employ various types of internal combustion engine, turbo engine, etc., to meet with the power energy requirement in actual application; the power source of the jet propeller  210  is the power device  310  in the present invention, which is an innovative propeller design. The propeller breaks through the method using the conventional propeller as the propelling force, but employs a design of parallel tube roller or a hollow tube roller with a hollow space tapered from one end to the other end. The roller diversion tube  220  has at least one spiral diversion protrusion  222  therein. When the roller diversion tube  220  is rolling, by the tangent flow of the spiral diversion protrusion  222  inside the roller diversion tube  220  and the fluid (air or water) motion mode with pressure difference between the front and the rear side generated by unequal pitch, the fluid will generate pressure in the middle and at the rear end of the roller diversion tube  220 . After the roller diversion tube  220  kept continuously rotating, the spiral diversion protrusions  222  inside the roller diversion tube  220  will greatly increase the pressure of the fluid rolling in the roller generated during tangent flow. When the fluid pressure inside the roller diversion tube  220  is gradually larger than the external pressure of the roller diversion tube  220 , it will generate the propelling force and ejecting outwardly, so as to generate a reaction propelling force. Such a propelling force is sufficient for driving the inflated vehicle device  110  according to the present invention or non-inflated vehicle device; and, any product being able to replace the spiral diversion protrusions  222  inside the roller diversion tube  220 , such as a propeller, can thus generate a powerful propelling force, eject air  465  or water column  255  as a spray or a column (referring to  FIG. 6  and  FIG. 7 ), which is also available to have such a function without the present invention. 
         [0065]    In the present invention and those embodiments, the fluid is generally indicating any flowing air, dirty gas, chemical gas, mixture gas, water, liquid, viscous liquid, glue, agent, and chemical liquid, etc. 
         [0066]    In this embodiment, a power device  310  is installed at a suitable location on the inflated vehicle device  110 , so as to generate a certain kinetic energy to drive the roller-type jet propeller  210 , and further generate the propelling force to let the inflated vehicle device  110  move forward. 
         [0067]    Please refer to  FIG. 3 , which is a diagram of a coupling tube pressurizing device according to the present invention. In the embodiment, the main structure of the coupling tube pressurizing device  360  according to the present invention comprises: a coupling tube  272 , a pressurizing tube  362 , a pressurizing axle rod  376 , a coupling tube device  270 , and a press-button device  380 . The coupling tube  272  is connected with the roller-type diversion tube  220  through the press-button device  380 . The pressurizing tube  362  is configured inside the coupling tube  272 , and a pressurizing tube wall  366  and a pressurizing structure are configured in the pressurizing tube  362 . The pressurizing axle rod  376  is connected with the shaft  240 , and is used to drive the pressurizing structure to rotate. The coupling tube device  270  is located at the rear end of the coupling tube  272 , so as to draw out the fluid after pressurization to the desired location. 
         [0068]    One end of the coupling tube  272  is connected with the forward section of the jet propeller  210  through the press-button device  380 , and the other end is coupled with the rear section of the coupling tube device  270 . The coupling tube  272  is used to protect the pressurizing tube  362 , and all the components located inside the pressurizing tube  362 ; the internal structural design of the pressurizing tube  362  could meet the purpose of fluid pressurization; and, the pressurizing tube wall  366  will generally employ the wing-shape design for effective fluid pressurization and flow speed to enhance the performance. 
         [0069]    The pressurizing structure comprises a high-pressure fan  372 , a low-pressure fan  374  and a high-speed fan  378 , wherein the high-pressure fan  372  is majorly used to generate larger fluid volume sucked into the pressurizing tube  362  by the blades after rotation; and, the low-pressure fan  374  may generate different pressure difference between the front and the rear side based on the different fan surface designs, area, amount and pitch for the blades, and further pressurize the fluid inside the pressurizing tube  362 ; and, the high-speed fan  378  is majorly used to generate larger fluid volume into the coupling tube device  270  or pump out from the pressurizing tube  362  by the blades after rotation. 
         [0070]    The front end of the pressurizing axle rod  376  is connected with the roller shaft  240  inside the jet propeller  210 , so as to rotate the high-pressure fan  372 , the low-pressure fan  374  and the high-speed fan  378  altogether in a serial manner. The press-button device  380  comprises a press-button  382 , a snap ring  386 , and a snap lock  384 . The press-button  382  is a component for locking the snap ring  386  with the snap lock  384 . The snap lock  384  may be fixed at suitable location outside the jet propeller  210  or the coupling tube  272 , and used in association with the snap ring  386  and the press-button  382 . The snap ring  386  may be used in association with the snap lock  384  and the press-button  382 , so that both of the jet propeller  210  and the coupling tube  272  may be effectively and closely connected with each other, and the roller shaft  240  inside the jet propeller  210  and the pressurizing axle rod  376  inside the pressurizing tube  362  may be connected; or, the roller tail tube  221  inside the jet propeller  210  may be directly and closely connected with the pressurizing tube  362 , so as to rotate the high-pressure fan  372 , the low-pressure fan  374  and the high-speed fan  378  altogether, and achieve the purpose for pressurization and fluid suction. 
         [0071]    The coupling tube pressurizing device  360  according to the present invention further comprises a fixture holder  225 , a bearing  226 , a tenon  368 , and a flexible pad  370 . The fixture holder  225  may fix the connection between the jet propeller  210  and the coupling tube  272 , and has a bearing  226  to link with the front and the rear sections of shaft, so that the pressurizing tube  362  may rotate, and further pressurize the fluid. The bearing  226  may smooth the rotation of the shaft  240  inside the roller-type jet propeller  210  and the coupling tube  272 . The tenon  368  is designed to be located at the connection between the roller-type jet propeller  210  and the coupling tube  272 , and, during the connection, there is a certain fixed placement or configuration mode to prevent from misplacement. The flexible pad  370  is located at the most front end of the pressurizing tube  362 , which is majorly used to provide a buffer space when the jet propeller  210  and the coupling tube  272  are connected with each other. It cannot only increase the connection tightness, but also eliminate the minor tolerance during coupling due to the flexibility. 
         [0072]    Please refer to  FIG. 4 , which is an assembly diagram of the jet propeller and the coupling tube pressurizing device according to the present invention. When the user is going to use the device, it is first to align with the tenons at the front end of the coupling tube pressurizing device  360  with those at the tail end of the jet propeller  210 ; hitching the snap ring  386  on the press-button device  380  onto the snap lock  384 ; next, pressing the press-button  382  in a reversed direction until it is locked; then, the coupling tube device  270  is connected at the tail section of the coupling tube pressurizing device  360  to complete the installation procedure. Then, a power device  210  is activated, and rotated along with the roller diversion tube  220  inside the jet propeller  210 , and the roller shaft  240  therein will drive the pressurizing axle rod  376  inside the coupling tube pressurizing device  360  rotating altogether, and drive the high-pressure fan  372 , the low-pressure fan  374  and the high-speed fan  378  on the pressurizing axle rod  376  to rotate altogether, and further suck the external fluid into the blades of the coupling tube pressurizing device  360  for pressurization and pump-out. Moreover, the roller tail tube  221  inside the roller-type jet propeller device  210  is directly and closely connected with the pressurizing tube  362  to further drive the high-pressure fan  372 , the low-pressure fan  374  and the high-speed fan  378  to rotate altogether, and achieve the purpose of pressurization and fluid suction. 
         [0073]    Please refer to  FIG. 5  to  FIG. 7 , which are diagrams for connection between the assembly of the jet propeller and the coupling tube pressurizing device with the special function nozzle device according to the present invention. 
         [0074]    In this embodiment, the special function nozzle device  280  according to the present invention comprises at least one inflating nozzle device  450 , a fluid suction nozzle device  510 , and a high-pressure water jet device  610 . By connecting these different nozzle devices in association with the jet propeller  210  and the coupling tube pressurizing device  360 , the fluid after pressurization can be inflated into a specific object or pumped out to external environment. 
         [0075]    Please continue to refer to  FIG. 5 , which is a diagram for connection between the assembly of the jet propeller and the coupling tube pressurizing device with the inflating nozzle device according to the present invention. As shown, the device comprises at least a jet propeller  210 , a coupling tube device  270 , an extended coupling device  410 , and an inflating nozzle device  450 . The components, connection and operation for the jet propeller  210  have been described in details from  FIG. 1  to  FIG. 4 , so there is no further description herein. 
         [0076]    In the embodiment, the coupling tube device  270  according to the present invention comprises at least a coupling tube, whose front end is closely connected with the tail end of the jet propeller  210 , so as to transport the generated propelling force to the feed pipe  274 ; a feed pipe  274 , whose front end is connected with the coupling tube  272 , and the tail end is connected with a joint  276 , which is used to transport the propelling force generated by the roller-type jet propeller  210  to the extended coupling tube device  410 ; the joint  276  has its front end connected with the feed pipe  274 , and its tail end connected with the extended coupling tube device  410 , so as to transport the propelling force generated by the roller-type jet propeller  210  to farther location for use. 
         [0077]    In the embodiment, the extended coupling tube device  410  is majorly used as an extended feed pipe  274  made of a certain length, which comprises at least a lock head  415 , with its front end connected with the joint  276  of the coupling tube device  270 , and its tail end connected with the extended feed pipe  420 ; an extended feed pipe  420  is a feed pipe  274  made of a certain length to be convenient for the user to use in short, middle and long distance, with its front end connected with the lock head  415 , and the other end connected with the joint  425 ; the joint  425  is used to be connected with the inflating nozzle device  450 ; a pressure gauge  430 , when the ejected fluid is flowing through the extended feed pipe  420 , there will be a certain pressure inside the tube, so that the component is used to detect the pressure inside the extended feed pipe  420  or the fluid inflated into the object for user&#39;s reference. 
         [0078]    In the embodiment, the inflating nozzle device  450  according to the present invention is to inflate the fluid after drawing of the propelling force generated by the jet propeller  210  so as to save the energy, human labor and rapid inflation, which comprises at least a lock header  455  with its front end connected with the joint  425  of the extended coupling tube device  410 , and its tail end connected with the inflating nozzle  460  to pump out the fluid; the inflating nozzle  460  is majorly used to insert into the gas tap on the product to be inflated, and correctly introduce the fluid into the body for inflation until it is full, and the component is drawn out and close the gas tap; an air jet  465  is generally indicated as the ejected fluid after drawing of the propelling force generated by the roller-type jet propeller  210 . 
         [0079]    When the user is going to use the device, the coupling device  270  is first connected with the extended coupling tube device  410  and the inflating nozzle device  450  in a serial manner; then, the coupling tube device  270  is connected with the tail end of the roller-type jet propeller  210 ; or, at the tail end of the roller-type jet propeller  210 , sequentially connecting the coupling tube device  270 , the extended coupling tube device  410 , and the inflating nozzle device  450  in a serial manner; then, the inflating nozzle device  450  is inserted into the gas tap of the object to be inflated; finally, activating the power device  310  on the vehicle  305 . The user can effectively control the inflation level and safety with the indication of pressure gauge  430  during the inflation process. 
         [0080]    Furthermore, in the embodiment, the inflating nozzle device  450  at the tail end is replaced with a spray gun nozzle device (not shown), which can achieve the blow gun effect. 
         [0081]    Please refer to  FIG. 6 , which is a diagram for a beam jet propellor and a coupling tube pressurizing device after assembly in association with a connection with a fluid suction nozzle device according to the present invention. In the embodiment, the fluid suction nozzle device  510  according to the present invention is majorly used to rapid pump out the gas or other fluid to be pumped out inside the inflating body to save the energy and human labor; at least comprising a nozzle fluid tube  515 , which is majorly used to outwardly introduce the gas to be pumped out in the tube with the gas ejected from the extended coupling tube device  410 , so as to pump out the fluid; a handle  525 , which is convenient for the user to hand-carry or bring the fluid suction nozzle device  510 ; a fluid suction nozzle  530 , which is a device controlling the speed and amount of the gas to be pumped out; a fluid suction switch valve  535 , which is a switch valve for controlling the On/Off of the gas to be pumped out; a fluid suction tube  540 , which is majorly used to introduce outwardly the gas with the tube, with its front end connected with the lock header  415  and the fluid suction switch valve  535 , with the other end connected with the lock header  415 ; a gas filter tube  545 , when the fluid to be pumped out is muddy, the component can be used as gas filter. 
         [0082]    In the embodiment, the usage, operation and connection for the fluid suction nozzle device  510  according to the present invention is described as follows; please first refer to the usage, operation and connection for the inflating nozzle device  450 . Their difference is that the inflating nozzle device  450  is changed to the fluid suction nozzle device  510  to achieve the fluid suction purpose, and the fluid may be gas or liquid. First, the lock header  455  at the tail end of the fluid suction nozzle device  510  is connected with the joint  425  of the extended coupling tube device  410 ; next, the fluid suction tube  540  is placed at the location for pumping out the fluid or connected therewith; using hand to hold the fluid suction nozzle device  510 , and using hand to open the fluid suction switch valve  535  to begin the operation of fluid suction; then, based on the required amount and speed for fluid suction, adjusting the fluid suction nozzle  530  to be able to pump out the fluid smoothly until the fluid is completely pumped out; and, sequentially turning off the fluid suction switch valve  535  and the power device  310 . 
         [0083]    Please refer to  FIG. 7 , which is a diagram for a jet propeller and a coupling tube pressurizing device after assembly in association with a connection with a high-pressure water jet device according to the present invention. In the embodiment, the high-pressure water jet device  610  according to the present invention is majorly used to introduce outwardly the high-pressure fluid generated by the roller-type jet propeller  210 , and employing the high-pressure water jet nozzle  615  to spray out to achieve the purpose of fire fighting water jet or water spray. The major structural components of the device are described as follows: high-pressure water jet nozzle  615 , which is a device controlling the speed and amount for the spraying fluid; a water tube switch valve  620 , which is majorly used to control the switch valve for the ejected fluid; an external water tube  625 , which is majorly used to introduce outwardly the external fluid, with its front end connected with the lock header  415  and the water tube switch valve  620 , and with the other end connected with the lock header  415 ; and a water filter  630 , which is used to filter the fluid. 
         [0084]    In the embodiment, the usage, operation and connection for the high-pressure water jet device  610  according to the present invention is described as follows. Please refer to the abovementioned usage, operation and connection for the fluid suction nozzle device  510 . Their difference is that the fluid suction nozzle device  510  is changed to the high-pressure water jet device  610  to achieve the fire control or cleaning purpose. First, the lock header  455  at the tail end of the high-pressure water jet device  610  is connected with the joint  425  of the extended coupling tube device  410 ; next, the fluid suction tube  540  is placed at the location for pumping out the fluid or connected therewith; using hand to hold the high-pressure water jet device  610 , and using hand to open the water tube switch valve  620  to introduce the external fluid into the nozzle fluid tube  515 ; then, based on the required amount and speed for water spray, adjusting the high-pressure water jet nozzle  615  to be able to spray the fluid; and, when there is no need for spraying, sequentially turning off the water tube switch valve  620  and the power device  310 . 
         [0085]    Please refer to  FIG. 8 , which is a diagram for  FIG. 5  to  FIG. 7  applied in an inflating vehicle device. When the user wants to have the inflating vehicle device  110  fill with gas, it needs only to connect the coupling tube device  270 , an extended coupling tube device  410  and an inflating nozzle device  450  in a serial manner; and, connecting the coupling tube device  270  with the tail end of the roller-type jet propeller  210 ; then, inserting the inflating nozzle device  450  into the gas tap of the object to be inflated, and activating the power device  310  to achieve the purpose of self-inflation; until the object is filled up, turning off the power device  310 , and sequentially removing the coupling tube device  270 , the extended coupling tube device  410  and the inflating nozzle device  450  from the gas tap of the inflating vehicle device  110  and the roller-type jet propeller  210 ; after packing up, the inflating vehicle device  110  can be pushed into water. 
         [0086]    When the user is going to deflate the filled-up inflating vehicle device  110 , the inflating vehicle device  110  is first dragged onto the shore; then, sequentially completing the assembly; only replacing the inflating nozzle device  450  during inflation with the fluid suction nozzle device  510 ; then, completing the fluid suction operation following the activation sequence and turn-off sequence, and folding the inflating vehicle device  110  for packing. 
         [0087]    In the embodiment, the components, connection and operation for the fluid suction nozzle device  510 , the blow gun nozzle device  560  and the high-pressure water jet device  610  have been described in  FIG. 5 , so there is no need for description herein. 
         [0088]    Please refer to  FIG. 9 , which is a diagram for outboard engine without differential gear according to the present invention. In the embodiment, the main structure of the outboard engine  720  without differential gear according to the present invention comprises a power control device  800 , a direction control device  112 , and a propeller device  122 ; wherein, the propeller device  122  comprises a power device  310  and a jet propeller  210 . Because the components, connection and operation for the jet propeller  210  described in the figure have been described in  FIG. 1  to  FIG. 8 , there is no need for description herein, and only describing the other components not described yet. 
         [0089]    In the embodiment, the components inside the power control device  800  according to the present invention are described with the usage and application: a controller  315  for stabilizing voltage and for electric current transmission control; a driver  320  as a break for driving the motor  325  to rotate; and, a sensor  810 . When roller-type jet propeller  210  is going to change the forward or backward travelling direction, the device is majorly used as the control switch for stopping or activating the power device  310 . 
         [0090]    In the embodiment, the main structure of the power device  310  according to the present invention comprises at least a motor  325 , a power device (shaft  215 ), a differential gear device  875 , an universal joint  330 , an axis seal  335 , a watertight device  860 , a battery module  340 , an electric wire  345 , a charger  350  and a plug  355 . 
         [0091]    In the embodiment, the components inside the power device  310  according to the present invention are described with the usage and application as follows: the battery module  340  is majorly used to provide sufficient electric source for the power device  310 ; the electric wire  345  is used to transmit the electric power to other associated devices requiring electric energy; the motor  325  is a device converting electric energy into kinetic energy to make the shaft inside the motor  325  generating different rotational speed based on different electric current amounts; the power device (shaft  215 ) having the front end connected with the rotor on the motor  325 , and further outwardly extending the rotational speed of the motor  325 , and having the rear end connected with the roller shaft  240  inside the roller-type jet propeller  210 , so that the rotational speed of the motor  325  can be transmitted to the roller shaft  240  through the component, and further driving the roller-type jet propeller  210  to rotate; the differential gear device  875  is majorly used to increase the rotational speed difference generated by the multi-layer gears of the component based on the original rotational speed of the motor  325  through different sized of gear set, so as to increase or reduce the rotational speed of the roller shaft  240 , and to be compliant with the rotational speed of the roller-type jet propeller  210  to generate preferred status of fluid propelling force; the universal joint  330  is majorly used to connect the shafts not on the same axis with both ends, and transferring the kinetic energy to another shaft during rotation; the axis seal  335  is majorly used to prevent the external fluid from flowing into the body and further affecting the normal machine operation through the sealing effect of the bearing; the watertight device  860  is majorly used to protect the components inside the electronic product (such as power control device  800 ) or the power device  310  from watering, humidification, or over-heated causing the present invention or the device being unable to operate in normal condition; the charger  350  is used to introduce the external electricity (DC or AC) into the component through the plug  355 , and converting or directly storing in the battery module  340 , so as to compensate the consumed electricity for continuous usage; and, the plug  355  is used to insert the component into the socket supplied by the external electricity, and introduce the external electricity into the charger  350 . 
         [0092]    In the embodiment, the components inside the direction control device  112  according to the present invention are described with the usage and application as follows: the rudder stock  115  is used to rotate the propeller device  122  to turn the travelling direction; the fixture  805  is used to fix the position of the forward-backward-left-right turning wheel  825  to form the direction for advancing, retreating, moving right or moving left; the sensor  810  is used that when the fixture  805  is left the original operating position, the component will transmit a power-off signal to the power control device  800 , and the power device  310  will be turned off to stop the operation; once the fixture  805  is recovered to the original operating position, the component will transmit the power-on signal to the power control device  800 , and the power device  310  will be turned on to start the operation; the connector  815  is used to fix the fixture  805  at suitable location on the connecting rod  835 ; the forward-backward-left-right turning wheel  825  is used to turn the direction of the propeller device  122 ; the forward-backward-left-right turning rod  830  is to have its upper end connected with the forward-backward-left-right turning wheel  825 , and its lower end connected with the connection base  855  of the propeller device  122 ; the handle  880  is to be held by the user with hand to control the turning operation; and the handle base  885  is to have its one end connected with the suitable case  218  of the propeller device  122  and fixed at the position, and its another end connected with the handle  880  for user&#39;s convenience to hold with hand. 
         [0093]    In the embodiment, the main structure of the propeller device  122  according to the present invention comprises at least a power device  310 , a jet propeller  210 , a filter net  214 , a water inlet pipe  860 , and a case  218 . 
         [0094]    In the embodiment, the components inside the propeller device  122  according to the present invention are described with the usage and application as follows: the power device  310 , the jet propeller  210 ; the rudder  210 ; the holder plate  172 , which can be used to reinforce the strength of the case  218 , and also to fix the components inside the device; the filter net  214  is used to filter the external fluid before flowing into the water inlet pipe  860  to prevent damaging the components inside the roller-type jet propeller  210 ; the case  218  can protect the device and the completeness of all components therein, and can be compliant with the requirement of fluid dynamics, and reduce the fluid resistance; the water inlet  230  is located right in front of the filter net  214  and the water inlet pipe  860 , which is the only inlet of the fluid entering the water inlet pipe  860 ; the diversion plate  845  and the exposed holder plate  172  is compliant with the fluid dynamics to correct the flow direction of the fluid and reducing the resistance; the tangent flow sheet  850  is used to introduce the fluid external to the device body based on the design perspective and the number of components to increase the external fluid entering the water inlet pipe  860 , and make the in-tube fluid to be sufficient and increasing the flow speed; the connecting base  855  is to have its upper end connected with the connecting rod  835  for convenience of directional control during travelling, and to have its lower end fixed with the device at suitable location; the water inlet pipe  860  is used so that all fluid must flow through the components and enter the roller-type jet propeller  210 , and further generate the propelling force; the block net  870  is located at the tail end of the roller-type jet propeller  210  for blocking foreign substances from entering the roller-type jet propeller  210 ; the connecting rod  835  is used to serially connect and fix the main body (power control device  800 , direction control device  112  and propeller device  122 ) of the device according to the present invention altogether to form an usable product; and, the board plywood  840  is configured at suitable location of the connecting rod  835 , and attaching the outboard engine without differential gear according to the present invention onto the vehicle  305  for the convenience of user to control the direction and speed. 
         [0095]    In the embodiment, the outboard engine  720  without differential gear according to the present invention is described with the connection and operation as follows. When the user is going to use the device, he/she only needs to attach the board plywood  840  of the device onto the suitable location of the vehicle  305  and fix it for use. First, the user should check the batter module  340  by himself/herself to see if the available electricity is sufficient; if sufficient, the user can activate the propeller device  122  from the power control device  800 , and adjust it by himself/herself following the speed requirement, and then control the direction control device  112  to advance to the desired destination or turn to another direction. 
         [0096]    In the embodiment, the outboard engine  720  without differential gear according to the present invention is described with the propelling operation. First, the board plywood  840  on the connecting rod  835  is attached on the vehicle  305 ; next, activating the power control device  800 , and also activating the motor  325 ; after rotation of the rotor of the motor  325 , driving the fluid pressurizing diversion protrusion device  232  and the spiral diversion protrusion  222  (or propeller) on the roller shaft  240  to rotate, and sucking the fluid external to the propeller device  122  into the water inlet pipe  234 ; then, after the rotation of fluid pressurizing diversion protrusion device  232  (inside the water inlet pipe  234 ), the fluid inside the water inlet pipe  220  will generate the pressurized fluid into the roller  220 ; at this time, the rotating spiral diversion protrusion  222  (or propeller) in the roller diversion tube  220  will further pressurize the fluid after pressurization to gradually increase the fluid pressure inside the roller diversion tube  220 ; once the pressure in the roller diversion tube  220  is larger than the external pressure, the fluid will be ejected outwardly and generate the reaction propelling force, so that the attached vehicle  305  will move forward. 
         [0097]    Please refer to  FIG. 10 , which is an outboard engine with differential gear according to the present invention. In the embodiment, the outboard engine  740  with differential gear according to the present invention is almost the same as  FIG. 9  in structural design. The only difference is to add a differential gear device  875  inside the power device  310 , which may increase or reduce the original rotational speed of the motor  325  to be compliant with the propelling force requirement of various vehicles  305 . 
         [0098]    Because the components, connection, operation and functions recorded in the embodiment have been described in  FIG. 7 , there is no need for description herein. Please refer to  FIG. 7  if needed. 
         [0099]    Please refer to  FIG. 11 , which is an outboard engine with universal joint according to the present invention. In the embodiment, the outboard engine  760  with universal joint according to the present invention is almost the same as  FIG. 10  in structural design. The only difference is that there are additional one universal joint  330  and a power device (shaft  215 ) inside the power device  310  in addition to the original differential gear device  875 , so as to change the original horizontal rotation mode to be compliant with the space and propelling force requirement of various vehicles  305 . 
         [0100]    Because the components, connection, operation and functions recorded in the embodiment have been described in  FIG. 9  and  FIG. 10 , there is no need for description herein. 
         [0101]    Please refer to  FIG. 12 , which is a cross-sectional diagram for speed distribution in fluid simulation test according to the present invention. In the embodiment, the cross-sectional diagram for speed distribution in fluid simulation test according to the present invention is based on the fluid speed distribution of the beam jet propellor  210  during operation according to the present invention, as shown in  FIG. 1 . The fluid simulation test was conducted by United Ship Design &amp; Development Center in Taiwan. Please refer to the color diagram as attachment 1. It is clear that the fluid speed distribution of the jet propeller  210  according to the present invention during propelling can be proved to have effective propelling performance. Please refer to  FIG. 13 , which is a pressure distribution diagram of the diversion protrusion in the fluid simulation test according to the present invention. In the embodiment, the fluid simulation test was conducted by United Ship Design &amp; Development Center in Taiwan. Please refer to the color diagram as attachment 2. It is clear that the color distribution at the front end and the rear end of the fluid pressurizing diversion protrusion  232  according to the present invention is located at two ends of the color code table (such as Red and Blue). It is obvious that the pressure difference between the front end and the rear end of the fluid pressurizing diversion protrusion  232  is very large, so that the flow speed of the fluid entering the roller diversion tube is increased, and further enhancing the efficiency of the propeller. 
         [0102]    After describing preferred embodiments of the present invention in detail, it is clearly understood to those skilled in the art that all kinds of alterations and changes can be made within the spirit and scope of the appended claims. Therefore, the spirit and scope of the appended claims should not be limited to the implementation of the preferred embodiments contained in the specification.