A fluid boosting propulsion device

Abstract

The present invention discloses a fluid boosting propulsion device, which includes a rotary supercharger and a fixed sleeve, wherein the rotary supercharger is sleeved in the fixed sleeve and can rotate in the fixed sleeve; a spiral supercharger flow channel is provided on the rotary supercharger, and the supercharger flow channel rotates to achieve active supercharging of the fluid, thereby increasing the fluid flow rate and generating thrust; in addition, the special sleeve connection method of the rotary supercharger and the fixed sleeve can effectively prevent the edge loss and backflow of the fluid without affecting the rotation of the rotary supercharger, thereby improving the energy conversion efficiency of the propeller. The fluid boosting propulsion device of the present invention also has the advantages of simple structure, long service life, easy maintenance and low production cost.

Description

Technical Field

[0001] The present invention relates to a fluid propulsion device, in particular to a fluid pressurized propulsion device, belonging to the technical field of fluid pressurized propulsion devices. Background Art

[0002] Fluids generally refer to water and gas (mainly air), and propellers are devices that use water or gas as a medium to propel ships or aircraft. Existing propellers mainly include propeller propellers and water jet (or jet) propellers.

[0003] A propeller, or simply a propeller, is typically mounted on a propeller shaft below the waterline at the stern of a boat. Driven by the main engine, the propeller shaft rotates, drawing water in through the blade's intake surface and discharging it out through the discharge surface, using the water's reaction force to propel the boat forward. Propellers are categorized as fixed-pitch and adjustable-pitch propellers. ① Fixed-pitch propellers consist of a hub and blades. The blades typically have three to four blades. The portion closest to the hub is called the root, and the outer end is called the tip. During forward propulsion, the leading edge is called the leading edge, and the trailing edge is called the trailing edge. The side of the propeller disk facing the stern is called the discharge surface, and the side facing the bow is called the intake surface. A ducted propeller is created by attaching a circular duct to the outer edge of a fixed-pitch propeller. This duct improves propulsion efficiency but reduces reverse performance. Ducted propellers can be categorized as either fixed or adjustable-pitch propellers. Fixed-pitch propellers increase the boat's turning diameter, while adjustable-pitch propellers improve turning performance. ② Adjustable pitch propeller: The propeller blades rotate via a crank-connecting rod mechanism within the propeller hub. Changing the blade angle, without changing the propeller shaft's speed or direction, changes the propeller's propulsion power and direction. Propellers are simple in construction, reliable in operation, and highly efficient, making them the primary propulsion system for boats. Modern boat propellers often feature a large disc-to-area ratio, moderate side skew, radially unequal pitch, and a large number of blades to minimize cavitation, erosion, noise, and excessive excitation forces that may arise when operating in the uneven wake field at the stern. Some high-speed boats use supercavitating airfoil propellers. The air propellers used in full-cushion air cushion craft are similar to fixed-pitch propellers, utilizing the reaction force of the air to propel the boat forward.

[0004] A waterjet propulsion system consists of a water pump, a water intake pipe, and a water discharge pipe. When sailing forward, the pump draws water from the suction pipe under the ship and discharges it at high speed from the water discharge pipe, generating a reaction force that propels the boat forward. For reverse sailing, a reverse bucket, mounted above the water discharge pipe, is lowered into the water. High-speed water enters the reverse bucket and reflects the backward jet stream back into a forward flow, turning the boat into reverse without changing the main engine's rotational direction. Waterjets offer excellent shallow-water propulsion efficiency and maneuverability, along with low noise and vibration, making them a popular propulsion device for shallow-water boats.

[0005] In the existing technology, whether it is a propeller propeller or a water jet propeller, it is basically a blade-type structure. The rotation of the rotating blades realizes the mutual force between it and the fluid (water or air), and then obtains the reaction force of the fluid to serve as the thrust of the ship or aircraft. However, the energy conversion efficiency of the existing blade-type propeller is not high, the active pressurization effect on the fluid is limited, and the service life of the blades is short. In addition, the existing propellers all have different degrees of edge loss. That is, under the action of the pressure difference of the fluid before and after the blade, part of the fluid will flow through the gap at the rotating edge of the blade, and then this part of the fluid will not be pushed by the blade, which greatly reduces the energy transfer efficiency and affects the overall propulsion effect of the fluid behind the blade, greatly limiting the development of propulsion equipment technology. Summary of the Invention

[0006] In response to the problems in the prior art, such as the low energy conversion efficiency of existing propellers and the serious fluid edge loss phenomenon resulting in poor propulsion effect of existing propellers, the present invention provides a fluid boosting propulsion device, which includes a rotary supercharger and a fixed sleeve. The rotary supercharger is sleeved in the fixed sleeve and can rotate in the fixed sleeve; a spiral boosting flow channel is provided on the rotary supercharger, and the active pressurization of the fluid is achieved by rotating the boosting flow channel, thereby increasing the fluid flow rate and generating thrust. In addition, the special sleeve connection method of the rotary supercharger and the fixed sleeve can effectively prevent the edge loss of the fluid without affecting the rotation of the rotary supercharger, thereby improving the energy conversion efficiency of the propeller. In addition, the fluid boosting propulsion device of the present invention also has the advantages of simple structure, long service life, easy maintenance and low production cost.

[0007] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is as follows:

[0008] A fluid boosting and propulsion device, comprising a rotary supercharger and a fixed sleeve. The rotary supercharger comprises a rotating body and a boosting flow channel. The rotating body is a circular cylindrical structure, and the boosting flow channel is a spiral flow channel. A preset rotating shaft or a preset axial hole is provided through the middle of the rotating body. The boosting flow channel is provided on the rotating body outside the preset rotating shaft or the preset axial hole, and extends axially in a spiral manner through the front and rear ends of the rotating body. The fixed sleeve is sleeved on the surface of the rotating body, that is, the rotating body can rotate within the fixed sleeve.

[0009] Preferably, the rotating body is an expanded cylindrical structure with a front end face diameter smaller than a rear end face diameter. The boost flow channel extends from front to back along the axial direction of the rotating body, and also extends from inside to outside along the radial direction of the rotating body, that is, the boost flow channel is an inclined spiral flow channel. In addition, a spiral protrusion extending in the direction of fluid flow (the direction of the protrusion is the direction of the central axis of the flow channel) can be provided inside the spiral flow channel to further enhance the active pressurization effect on the fluid.

[0010] Preferably, the cross-section of the pressurization flow channel is a circular, semicircular or elliptical structure, and the inner diameter of the pressurization flow channel gradually decreases along the direction from the fluid inlet to the fluid outlet of the pressurization flow channel.

[0011] Preferably, the caliber of the fluid inlet of the pressurized flow channel is 1.1-30 times, preferably 1.5-20 times, and more preferably 2-10 times the caliber of the fluid outlet of the pressurized flow channel.

[0012] Preferably, the fixing sleeve is sleeved onto the surface of the rotating body in such a manner that the fixing sleeve covers the sidewall surface of the rotating body along the circumference of the rotating body and also extends to cover the front and rear surfaces of the rotating body. On the front and rear surfaces of the rotating body, the fixing sleeve extends to such an extent that the edge of the fixing sleeve at least reaches tangency with the inner edges of the fluid inlet and fluid outlet of the pressurized flow channel.

[0013] Preferably, the gap formed between the inner wall of the fixed sleeve and the outer wall of the rotating body is a dynamic-static return gap. The dynamic-static return gap includes a front gap close to the fluid inlet of the boost channel, a rear gap close to the fluid outlet of the boost channel, and a middle gap connecting the front gap and the rear gap. Both the front gap and the rear gap contain at least one "L"-shaped bend, and the number of "L"-shaped bends contained in the front gap is greater than the number of "L"-shaped bends contained in the rear gap. The front gap port of the front gap is vertically connected to the fluid inlet of the boost channel, and the rear gap port of the rear gap is vertically connected to the fluid outlet of the boost channel.

[0014] Preferably, the gap thickness of the dynamic-static return gap does not exceed 5 mm, preferably 0.1-3 mm, more preferably 0.3-2 mm.

[0015] Preferably, the device includes a plurality of boosting flow channels, which are evenly distributed along the circumferential direction on the outer side of the preset rotating shaft or preset shaft hole of the rotating body and constitute a group of boosting rings.

[0016] Preferably, a plurality of boosting ring groups are provided on the rotating body outside the preset rotating shaft or the preset shaft hole along the radial direction of the rotating body from the inside to the outside.

[0017] Preferably, the device further comprises a driving device, which is arranged at the front end side of the rotary supercharger and is connected to the preset rotating shaft or the preset shaft hole of the rotating body via a driving shaft.

[0018] Preferably, the device also includes a flow-guiding mechanism. The flow-guiding mechanism includes an inner flow-guiding cover and an outer flow-guiding shell. The inner flow-guiding cover is a conical structure that is inverted on the rear end of the rotating body, and the bottom end of the inner flow-guiding cover is connected to the rotating body. The outer flow-guiding shell is a conical structure in which a sleeve cover is arranged on the outside of the inner flow-guiding cover, and the bottom end of the outer flow-guiding shell is connected to a fixed sleeve covering the rear end of the rotating body. A flow-guiding channel is formed between the outer surface of the inner flow-guiding cover and the inner surface of the outer flow-guiding shell, and the fluid inlet of the flow-guiding channel is connected to the fluid outlet of the boost flow channel.

[0019] Preferably, the guide channel is an expanding diameter channel extending obliquely backward from outside to inside along the radial direction of the guide inner cover.

[0020] Preferably, the caliber of the fluid outlet of the diversion channel is 1.1-10 times, preferably 1.5-8 times, and more preferably 1.8-5 times the caliber of the fluid inlet of the diversion channel.

[0021] Preferably, the device also includes a fluid guiding mechanism. The fluid guiding mechanism is installed at the front end of the rotary supercharger, and includes a guiding mechanism body, a radial guiding outer ring, a radial guiding inner ring, and an axial guiding mechanism. The radial guiding outer ring is arranged at the outer peripheral edge of the rear end of the guiding mechanism body, so that the radial guiding outer ring surrounds the outer side of the front end of the rotating body formed by the rotation of the fluid inlet of the boosting flow channel. The radial guiding inner ring is fixedly connected to the middle of the rear end of the guiding mechanism body, and is arranged concentrically with the radial guiding outer ring, so that the radial guiding inner ring surrounds the inner side of the front end of the rotating body formed by the rotation of the fluid inlet of the boosting flow channel. The axial guiding mechanism is arranged inside the fluid outlet end of the guiding mechanism body, and the axial guiding mechanism is located upstream of the fluid inlet of the boosting flow channel.

[0022] Preferably, the radial guide outer ring, the radial guide inner ring, and the axial guide mechanism are all provided with guide plates. The guide plates are curved or inclined. Further preferably, the curvature or inclination of the guide plates is the same as the spiral direction of the boost flow channel.

[0023] In the prior art, existing propellers generally use blade-type rotating blades that interact with water or air to generate reverse thrust, and adjust the magnitude of the reverse thrust by controlling the rotation speed of the blades. However, due to the randomness of the flow of the fluid itself and the edge effect of the fluid when passing through the blades, the energy conversion efficiency of the blades is not high. In addition, in order not to affect the rotation of the blades, the overall diameter of the blades is smaller than the diameter of the flow channel, that is, there is a gap between the edge of the blades and the inner wall of the flow channel. After the rotation of the blades, there is a pressure difference between the fluids located upstream and downstream of the blades. Part of the upstream fluid will flow directly through this gap without the action of the blades, which reduces the total amount of fluid used to generate reverse thrust, and causes part of the converted energy to be consumed by this part of the fluid instead of being used to generate reverse thrust, that is, the total energy conversion efficiency of the blades is greatly lost.

[0024] In the present invention, the fluid boosting propulsion device includes a rotary supercharger and a fixed sleeve. The rotary supercharger includes a rotating body with a circular cylindrical structure and a spiral-reducing boosting flow channel. The boosting flow channel extends axially in a spiral, circumferential manner, extending through and connecting the front and rear ends of the rotating body. The fixed sleeve is movably connected to the outer surface of the rotating body, that is, the rotating body can rotate within the fixed sleeve, thereby driving the boosting flow channel to rotate. During the rotation of the boosting flow channel, the flow channel shrinks, generating an action force and a reaction force between the fluid and the boosting flow channel. Compared to ordinary bladed propellers, the spiral-reducing boosting flow channel of the present invention can actively boost the fluid, and without the presence of blades, it is less subject to axial fluid resistance and can actively boost the fluid. At the same time, the provision of the fixed sleeve greatly reduces the occurrence of fluid edge loss. Through the synergistic effect of the two, the energy conversion efficiency between the fluid boosting propulsion device and the fluid is greatly improved, energy consumption is reduced, and the propulsion performance of the propulsion device is enhanced.

[0025] In the present invention, the rotating body is an expanded diameter column structure in which the diameter of the front end face is smaller than the diameter of the rear end face, and the boost flow channel extends from front to back along the axial direction of the rotating body, and also extends from inside to outside along the radial direction of the rotating body, that is, the boost flow channel is an inclined spiral flow channel. The design of the rotating body with an expanded diameter column structure, on the one hand, facilitates the opening of an inclined spiral flow channel, and on the other hand, makes its contact surface with the fixed sleeve an inclined surface, extending the length of the connecting seam, increasing the difficulty of fluid edge loss, and indirectly improving the device's anti-edge loss effect. The design of the inclined spiral flow channel makes it possible for the inclined flow channel to have a longer flow path than the horizontal flow path in the same horizontal width direction. The longer flow path is conducive to further increasing the pressure and flow rate of the fluid at the fluid outlet, thereby generating a greater reaction force.

[0026] In the present invention, the cross-section of the boost channel is circular, semicircular, or elliptical. It should be noted that the cross-sectional shapes of the boost channel inlet and outlet can be the same or different, as long as the diameter of the fluid inlet is larger than the diameter of the fluid outlet. In the present invention, the preferred embodiment is that the diameter of the fluid inlet is 1.1 to 30 times the diameter of the fluid outlet.

[0027] In the present invention, the fixed sleeve covers the sidewall surface of the rotating body along its circumference and also extends to cover the front and rear surfaces of the rotating body. Consequently, both the front and rear sections of the dynamic and static return gap formed between the inner wall of the fixed sleeve and the outer wall of the rotating body have at least one L-shaped bend. This L-shaped bend eliminates the linear or streamlined dynamic and static return gap between the fixed sleeve and the rotating body, further reducing and preventing upstream fluid edge loss while also effectively preventing downstream fluid backflow.

[0028] It should be noted that the front gap has more L-shaped bends than the rear gap. The large number of L-shaped bends in the front gap and the small number in the rear gap further reduce and prevent upstream fluid edge loss and downstream fluid backflow.

[0029] In the present invention, the front gap port of the front gap is vertically connected to the fluid inlet of the boosting channel, and the rear gap port of the rear gap is vertically connected to the fluid outlet of the boosting channel. The vertical connection refers to that the central axis of the gap port is perpendicular to the central axis of the boosting channel. Under the rotating pushing action of the rotating body and the boosting channel, at the fluid inlet of the boosting channel and its fluid outlet, the water flow velocity entering the fluid inlet area of the boosting channel and the water flow velocity pushed to its fluid outlet area are both relatively high. The setting of the gap port being perpendicular to the water flow direction makes the high-speed flowing water generate "suction" on the inside of the gap when flowing through the gap port. Even a small amount of water splashed into the gap will be sucked out under the "suction" continuously generated by the subsequent water flow, thereby effectively avoiding or even eliminating the occurrence of fluid edge loss or backflow. It should be noted that when the gap port is not connected to the boost flow channel at a vertical tangent, when the gap port is tilted toward the direction of the fluid source, the fluid will inevitably flow into the gap; and when the gap port is tilted toward the direction of the fluid flow, since the boost flow channel is a variable diameter flow channel, the fluid pressure inside the boost flow channel is much greater than the pressure of the fluid outside its fluid inlet and outlet, and the high-pressure fluid can easily enter the gap.

[0030] It should be noted that the fluid velocity at the fluid outlet of the boost channel is much greater than the fluid velocity at its fluid inlet, that is, the "suction" generated by the high-speed fluid on the rear-section gap port at the fluid outlet of the boost channel is greater than the "suction" generated by the high-speed fluid on the front-section gap port at the fluid inlet of the boost channel. In order to balance the "suction" difference between the two, the design of multiple "L"-shaped bends and the number of "L"-shaped bends contained in the front-section gap is greater than the number of "L"-shaped bends contained in the rear-section gap can well offset this suction difference, that is, the design of the "L"-shaped bend and the design of the gap port and the boost channel being connected vertically and tangentially have a synergistic effect with each other. In the present invention, the gap thickness (diameter) of the dynamic and static return gap generally does not exceed 5 mm. The smaller gap thickness makes it easier for the "suction" difference to be blocked and offset by the "L"-shaped bend.

[0031] In the present invention, the water inlet guide structure is located in front of the active water pressure rotor (at the water inlet end) and covers the head of the active water pressure rotor. Together with the connecting pipe, the water inlet guide structure encloses the active water pressure rotor. The water inlet guide structure is equipped with transverse guide outer rings around the rotating body formed by the rotation of the active water pressure pipe inlet. These transverse guide outer rings are used to guide water entering the active water pressure device from the radial outside, thereby reducing the rotating water resistance of the active water pressure rotor.

[0032] Furthermore, the water inlet guide structure is equipped with a horizontal guide inner ring within the inner ring of the rotating body formed by the rotation of the active water pressure pipe inlet. The horizontal guide inner ring is used to guide water entering the active water pressure device from the radial inside, reducing the rotating water resistance of the active water pressure rotor.

[0033] It should be noted that in the prior art, the rotating blades of the blade-type propulsion device are generally arranged in a flow channel that passes through the front and back. This design inevitably results in the fluid in the flow channel generating an axial impact force on the blades. This axial impact force not only generates a great deal of resistance to the rotating blades, reduces their mechanical efficiency, and increases energy consumption, but also easily accelerates damage to the rotating blades and increases fluid turbulence. The present invention provides guide plates on the radial guide outer ring, the radial guide inner ring, and the axial guide mechanism. The direction of the guide plate is the same as the spiral direction of the pressurized flow channel. This allows the guide plate to guide the direction of the fluid before entering the pressurized flow channel, thereby reducing the resistance of the rotating water body and reducing fluid turbulence, increasing the amount of fluid entering, reducing energy consumption, and improving energy conversion efficiency, effectively ensuring the service life of the rotary booster.

[0034] It should be further explained that the guide plates on the radial guide outer ring organize the fluid entering the boost channel from the outside of the boost channel fluid inlet, reducing turbulence. The guide plates on the radial guide inner ring organize the fluid entering the boost channel from the inside of the boost channel fluid inlet, reducing turbulence. The guide plates on the axial guide mechanism organize the fluid entering the boost channel from the front of the boost channel fluid inlet, reducing turbulence.

[0035] In the present invention, multiple pressurized flow channels are evenly distributed along the circumference outside the pre-set rotating shaft or pre-set axial hole of the rotating body, forming a set of pressurized coils. Furthermore, multiple sets of pressurized coils are arranged radially outward from the inside of the rotating body outside the pre-set rotating shaft or pre-set axial hole. This refines the fluid entering the pressurized flow channel's fluid inlet, thereby smoothing the pressurization effect of the pressurized flow channel on the fluid and making the high-pressure fluid ejected from the fluid outlet of the pressurized flow channel more uniform. This helps reduce turbulence and increase the pressure of the ejected fluid.

[0036] In the present invention, the driving device is generally a motor, which is arranged on one side (generally the front side) of the rotary supercharger.

[0037] In the present invention, the guide channel of the guide mechanism is designed to be of an expanding diameter, which helps the pressure of the fluid ejected from the pressurized flow channel to gradually release and generate an opposite force (ie, thrust).

[0038] Compared with the prior art, the beneficial technical effects of the present invention are as follows:

[0039] 1: The fluid boosting propulsion device of the present invention can actively boost the fluid through a special rotary supercharger, that is, through a spiral reducing-diameter boosting flow channel, and is less affected by the resistance of the fluid and has a long service life. In addition, through the setting of the fixed sleeve, the edge loss of the fluid and the occurrence of fluid reflux are greatly reduced. Through the synergistic effect of the rotary supercharger and the fixed sleeve, the energy conversion efficiency between the fluid boosting propulsion device and the fluid is greatly improved, energy consumption is reduced, and the propulsion performance of the propulsion device is enhanced.

[0040] 2. The present invention features a specially designed dynamic and static clearance between the rotary supercharger and the fixed sleeve. This simple structural design essentially avoids or even eliminates fluid edge loss or swirl, further enhancing the propulsion performance of the propulsion device.

[0041] 3: The present invention provides a fluid guiding mechanism at the inlet of the boost flow channel, that is, through the radial guiding outer ring, the radial guiding inner ring, the axial guiding mechanism and the guide plates contained therein, so that the fluid entering axially and radially from the fluid inlet of the boost flow channel is sorted, turbulence is reduced, and the rotational resistance generated by the entering fluid to the boost flow channel is reduced, thereby further ensuring the energy conversion efficiency.

[0042] 4: The fluid boosting propulsion device of the present invention also has the characteristics of simple structure, convenient operation, low maintenance cost, low cost and long service life, which provides a new way for the further development of propulsion equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 This is a simplified cross-sectional structural diagram of the fluid boosting propulsion device of the present invention.

[0044] Figure 2 This is a simplified cross-sectional structural diagram of the fluid boosting propulsion device of the present invention when it includes a driving device.

[0045] Figure 3 It is a front perspective structural diagram of a rotary supercharger with multiple supercharging flow channels according to the present invention.

[0046] Figure 4 It is a rear perspective structural diagram of a rotary supercharger with multiple supercharging flow channels according to the present invention.

[0047] Figure 5 Schematic diagram of the structure of the fluid guide mechanism of the present invention.

[0048] Figure markings: 1: rotary supercharger; 101: rotating body; 102: boost flow channel; 2: fixed sleeve; 3: dynamic and static return gap; 301: front section gap; 302: middle section gap; 303: rear section gap; 4: driving device; 401: driving shaft; 5: flow guide mechanism; 501: flow guide inner cover; 502: flow guide outer shell; 503: flow guide channel; 6: fluid guide mechanism; 601: guide mechanism body; 602: radial guide outer ring; 603: radial guide inner ring; 604: axial guide mechanism; 605: guide plate. DETAILED DESCRIPTION

[0049] The technical solutions of the present invention are illustrated below with examples, and the scope of protection requested by the present invention includes but is not limited to the following embodiments.

[0050] A fluid boosting and propulsion device, comprising a rotary supercharger 1 and a fixed sleeve 2. The rotary supercharger 1 comprises a rotating body 101 and a boosting flow channel 102. The rotating body 101 is a circular cylindrical structure, and the boosting flow channel 102 is a spiral flow channel. A preset rotating shaft or a preset axial hole is provided through the middle of the rotating body 101. The boosting flow channel 102 is provided on the rotating body 101 outside the preset rotating shaft or the preset axial hole, and extends axially in a spiral manner to penetrate and connect the front end and rear end of the rotating body 101. The fixed sleeve 2 is sleeved on the surface of the rotating body 101, that is, the rotating body 101 can rotate within the fixed sleeve 2.

[0051] Preferably, the rotating body 101 is an expanded cylindrical structure with a front end face diameter smaller than a rear end face diameter. The pressurized flow channel 102 extends axially from front to rear along the rotating body 101 and also radially from inside to outside along the rotating body 101, i.e., the pressurized flow channel 102 is an inclined spiral flow channel.

[0052] Preferably, the cross-section of the pressurization channel 102 is a circular, semicircular or elliptical structure, and the inner diameter of the pressurization channel 102 gradually decreases along the direction from the fluid inlet to the fluid outlet of the pressurization channel 102.

[0053] Preferably, the caliber of the fluid inlet of the pressurized flow channel 102 is 1.1-30 times the caliber of the fluid outlet of the pressurized flow channel 102, preferably 1.5-20 times, more preferably 2-10 times.

[0054] Preferably, the fixing sleeve 2 is sleeved on the surface of the rotating body 101 in such a manner that the fixing sleeve 2 covers the sidewall surface of the rotating body 101 along the circumference of the rotating body 101 and also extends to cover the front and rear surfaces of the rotating body 101. On the front and rear surfaces of the rotating body 101, the fixing sleeve 2 extends to such an extent that the edge of the fixing sleeve 2 at least extends to be tangent to the inner edges of the fluid inlet and fluid outlet of the pressurized flow channel 102.

[0055] Preferably, the gap formed between the inner wall of the fixed sleeve 2 and the outer wall of the rotating body 101 is a dynamic-static return gap 3. The dynamic-static return gap 3 includes a front gap 301 near the fluid inlet of the pressurized flow channel 102, a rear gap 303 near the fluid outlet of the pressurized flow channel 102, and a middle gap 302 connecting the front gap 301 and the rear gap 303. The front gap 301 and the rear gap 303 each contain at least one "L"-shaped bend, and the number of "L"-shaped bends contained in the front gap 301 is greater than the number of "L"-shaped bends contained in the rear gap 303. The front gap port of the front gap 301 is vertically connected to the fluid inlet of the pressurized flow channel 102, and the rear gap port of the rear gap 303 is vertically connected to the fluid outlet of the pressurized flow channel 102.

[0056] Preferably, the gap thickness of the dynamic-static return gap 3 does not exceed 5 mm, preferably is 0.1-3 mm, and more preferably is 0.3-2 mm.

[0057] Preferably, the device includes a plurality of pressurized flow channels 102, which are evenly distributed along the circumference outside the preset rotating shaft or preset shaft hole of the rotating body 101 and constitute a group of pressurized rings.

[0058] Preferably, a plurality of boosting ring groups are provided on the rotating body 101 outside the preset rotating shaft or the preset shaft hole along the radial direction of the rotating body 101 from the inside to the outside.

[0059] Preferably, the device further comprises a driving device 4. The driving device 4 is arranged at the front end side of the rotary supercharger 1 and is connected to the preset rotating shaft or preset shaft hole of the rotating body 101 through a driving shaft 401.

[0060] Preferably, the device also includes a flow-guiding mechanism 5. The flow-guiding mechanism 5 includes a flow-guiding inner cover 501 and a flow-guiding outer shell 502. The flow-guiding inner cover 501 is a conical structure that is inverted on the rear end of the rotating body 101, and the bottom end of the flow-guiding inner cover 501 is connected to the rotating body 101. The flow-guiding outer shell 502 is a conical structure in which a sleeve cover is arranged on the outside of the flow-guiding inner cover 501, and the bottom end of the flow-guiding outer shell 502 is connected to the fixed sleeve 2 covering the rear end of the rotating body 101. A flow-guiding channel 503 is formed between the outer surface of the flow-guiding inner cover 501 and the inner surface of the flow-guiding outer shell 502, and the fluid inlet of the flow-guiding channel 503 is connected to the fluid outlet of the boost flow channel 102.

[0061] Preferably, the guide channel 503 is an expanding channel extending radially from outside to inside and obliquely backward along the guide inner cover 501.

[0062] Preferably, the caliber of the fluid outlet of the guide channel 503 is 1.1-10 times the caliber of the fluid inlet of the guide channel 503 , preferably 1.5-8 times, more preferably 1.8-5 times.

[0063] Preferably, the device also includes a fluid guide mechanism 6. The fluid guide mechanism 6 is mounted at the front end of the rotary supercharger 1 and comprises a guide mechanism body 601, a radial guide outer ring 602, a radial guide inner ring 603, and an axial guide mechanism 604. The radial guide outer ring 602 is positioned at the outer periphery of the rear end of the guide mechanism body 601, surrounding the front end of the rotating body formed by the rotation of the fluid inlet of the boosting channel 102. The radial guide inner ring 603 is fixedly connected to the rear end center of the guide mechanism body 601 and is arranged concentrically with the radial guide outer ring 602, surrounding the front end of the rotating body formed by the rotation of the fluid inlet of the boosting channel 102. The axial guide mechanism 604 is positioned within the fluid outlet end of the guide mechanism body 601 and upstream of the fluid inlet of the boosting channel 102.

[0064] Preferably, the radial guide outer ring 602, the radial guide inner ring 603, and the axial guide mechanism 604 are each provided with a guide plate 605. The guide plate 605 is a curved or inclined structure. Further preferably, the curvature or inclination direction of the guide plate 605 is the same as the spiral direction of the boost flow channel 102.

[0065] Example 1

[0066] like Figure 1-5 As shown, a fluid boosting propulsion device includes a rotary supercharger 1 and a fixed sleeve 2. The rotary supercharger 1 includes a rotating body 101 and a boosting flow channel 102. The rotating body 101 is a circular cylindrical structure, and the boosting flow channel 102 is a spiral flow channel. A preset rotating shaft or a preset axial hole is provided through the middle of the rotating body 101. The boosting flow channel 102 is provided on the rotating body 101 outside the preset rotating shaft or the preset axial hole, and extends through the front end and the rear end of the rotating body 101 in a spiral and surrounding manner along the axial direction. The fixed sleeve 2 is sleeved on the surface of the rotating body 101, that is, the rotating body 101 can rotate within the fixed sleeve 2.

[0067] Example 2

[0068] Example 1 is repeated, except that the rotating body 101 is an expanded cylindrical structure with a smaller diameter at the front end than at the rear end. The pressurizing channel 102 extends axially from front to rear along the rotating body 101 and also radially from inside to outside, i.e., the pressurizing channel 102 is an inclined spiral channel.

[0069] Example 3

[0070] Example 2 is repeated, except that the cross section of the pressurization channel 102 is a circular structure, and the inner diameter of the pressurization channel 102 gradually decreases from the fluid inlet to the fluid outlet of the pressurization channel 102 .

[0071] Example 4

[0072] Example 3 is repeated, except that the cross section of the pressurizing channel 102 is a semicircular structure.

[0073] Example 5

[0074] Example 4 is repeated, except that the cross section of the boosting channel 102 is an elliptical structure.

[0075] Example 6

[0076] Example 5 is repeated, except that the diameter of the fluid inlet of the pressurizing flow channel 102 is 1.2 times the diameter of the fluid outlet of the pressurizing flow channel 102 .

[0077] Example 7

[0078] Example 6 is repeated, except that the diameter of the fluid inlet of the pressurized flow channel 102 is 1.5 times the diameter of the fluid outlet of the pressurized flow channel 102 .

[0079] Example 8

[0080] Example 7 is repeated, except that the diameter of the fluid inlet of the pressurized flow channel 102 is 2.5 times the diameter of the fluid outlet of the pressurized flow channel 102 .

[0081] Example 9

[0082] Example 8 is repeated, except that the fixing sleeve 2 is sleeved on the surface of the rotating body 101 in the following manner: the fixing sleeve 2 covers the sidewall surface of the rotating body 101 along the circumference of the rotating body 101 and also extends to cover the front and rear surfaces of the rotating body 101. On the front and rear surfaces of the rotating body 101, the fixing sleeve 2 extends to such an extent that the edge of the fixing sleeve 2 at least extends to be tangent to the inner edges of the fluid inlet and fluid outlet of the pressurized flow channel 102.

[0083] Example 10

[0084] Example 9 is repeated, except that the gap formed between the inner wall of the fixed sleeve 2 and the outer wall of the rotating body 101 is the dynamic-static return gap 3. The dynamic-static return gap 3 includes a front gap 301 near the fluid inlet of the boosting channel 102, a rear gap 303 near the fluid outlet of the boosting channel 102, and a middle gap 302 connecting the front gap 301 and the rear gap 303. Each of the front gap 301 and the rear gap 303 contains at least one L-shaped bend, and the number of L-shaped bends in the front gap 301 is greater than the number of L-shaped bends in the rear gap 303. The front gap port of the front gap 301 is vertically connected to the fluid inlet of the boosting channel 102, and the rear gap port of the rear gap 303 is vertically connected to the fluid outlet of the boosting channel 102.

[0085] Example 11

[0086] Example 10 is repeated, except that the gap thickness of the dynamic-static return gap 3 does not exceed 5 mm.

[0087] Example 12

[0088] Example 11 was repeated, except that the gap thickness of the dynamic-static return gap 3 was 3 mm.

[0089] Example 13

[0090] Example 12 was repeated, except that the gap thickness of the dynamic-static return gap 3 was 1 mm.

[0091] Example 14

[0092] Repeat Example 13, except that the device includes multiple pressurized flow channels 102, which are evenly distributed along the circumference outside the preset rotating shaft or preset shaft hole of the rotating body 101 and form a group of pressurized rings.

[0093] Example 15

[0094] Repeat Example 14, except that multiple groups of boosting rings are provided on the rotating body 101 outside the preset rotating shaft or the preset shaft hole along the radial direction of the rotating body 101 from the inside to the outside.

[0095] Example 16

[0096] The embodiment 15 is repeated except that the device further comprises a driving device 4. The driving device 4 is arranged at the front end side of the rotary supercharger 1 and is connected to the preset rotating shaft or the preset shaft hole of the rotating body 101 through the driving shaft 401.

[0097] Example 17

[0098] Example 16 is repeated, except that the device further includes a flow-guiding mechanism 5. The flow-guiding mechanism 5 includes a flow-guiding inner cover 501 and a flow-guiding outer shell 502. The flow-guiding inner cover 501 is a conical structure that is inverted on the rear end of the rotating body 101, and the bottom end of the flow-guiding inner cover 501 is connected to the rotating body 101. The flow-guiding outer shell 502 is a conical structure in which a sleeve cover is arranged on the outside of the flow-guiding inner cover 501, and the bottom end of the flow-guiding outer shell 502 is connected to the fixed sleeve 2 covering the rear end of the rotating body 101. A flow-guiding channel 503 is formed between the outer surface of the flow-guiding inner cover 501 and the inner surface of the flow-guiding outer shell 502, and the fluid inlet of the flow-guiding channel 503 is connected to the fluid outlet of the pressurized flow channel 102.

[0099] Example 18

[0100] Example 17 is repeated, except that the guide channel 503 is an expanding channel extending radially from outside to inside and backward along the guide inner cover 501.

[0101] Example 19

[0102] Example 18 is repeated, except that the diameter of the fluid outlet of the guide channel 503 is 1.5 times the diameter of the fluid inlet of the guide channel 503.

[0103] Example 20

[0104] Repeat Example 19, except that the caliber of the fluid outlet of the guide channel 503 is twice the caliber of the fluid inlet of the guide channel 503.

[0105] Example 21

[0106] Repeat Example 20, except that the caliber of the fluid outlet of the guide channel 503 is three times the caliber of the fluid inlet of the guide channel 503.

[0107] Example 22

[0108] Example 21 is repeated, except that this device also includes a fluid guide mechanism 6. The fluid guide mechanism 6 is mounted at the front end of the rotary supercharger 1 and comprises a guide mechanism body 601, a radial guide outer ring 602, a radial guide inner ring 603, and an axial guide mechanism 604. The radial guide outer ring 602 is positioned at the outer periphery of the rear end of the guide mechanism body 601, surrounding the front end of the rotating body formed by the rotation of the fluid inlet of the supercharged flow channel 102. The radial guide inner ring 603 is fixedly connected to the rear end center of the guide mechanism body 601 and is arranged concentrically with the radial guide outer ring 602, surrounding the front end of the rotating body formed by the rotation of the fluid inlet of the supercharged flow channel 102. The axial guide mechanism 604 is positioned within the fluid outlet end of the guide mechanism body 601 and upstream of the fluid inlet of the supercharged flow channel 102.

[0109] Example 23

[0110] Example 22 is repeated, except that guide plates 605 are provided on the radial guide outer ring 602, the radial guide inner ring 603, and the axial guide mechanism 604. The guide plates 605 are curved or inclined. Furthermore, preferably, the curvature or inclination of the guide plates 605 is aligned with the spiral direction of the boost flow channel 102.

Claims

1. A fluid boosting propulsion device, characterized in that: The device comprises a rotary supercharger (1) and a fixed sleeve (2); the rotary supercharger (1) comprises a rotary body (101) and a pressurizing flow channel (102); the rotary body (101) is a circular cylindrical structure, and the pressurizing flow channel (102) is a spiral flow channel; a preset rotary shaft or a preset shaft hole is provided through the middle of the rotary body (101); the pressurizing flow channel (102) is provided on the rotary body (101) outside the preset rotary shaft or the preset shaft hole, and extends through the front end side and the rear end side of the rotary body (101) in a spiral and surrounding manner along the axial direction; the fixed sleeve (2) covers the side wall surface of the rotary body (101) along the circumference of the rotary body (101) and also extends to cover the rotary body ( 101); the gap formed between the inner wall of the fixed sleeve (2) and the outer wall of the rotating body (101) is the dynamic-static return gap (3); the dynamic-static return gap (3) includes a front gap (301) close to the fluid inlet side of the boosting flow channel (102), a rear gap (303) close to the fluid outlet side of the boosting flow channel (102), and a middle gap (302) connecting the front gap (301) and the rear gap (303); the front gap (301) and the rear gap (303) each contain at least one "L"-shaped bend portion, and the number of "L"-shaped bend portions contained in the front gap (301) is greater than the number of "L"-shaped bend portions contained in the rear gap (303).

2. The fluid boosting propulsion device according to claim 1, characterized in that: The rotating body (101) is an expanded-diameter cylindrical structure in which the diameter of the front end face is smaller than the diameter of the rear end face; the pressurized flow channel (102) extends from front to rear along the axial direction of the rotating body (101) and also extends from inside to outside along the radial direction of the rotating body (101), that is, the pressurized flow channel (102) is an inclined spiral flow channel.

3. The fluid boosting propulsion device according to claim 1 or 2, characterized in that: The cross section of the pressurized flow channel (102) is a circular, semicircular or elliptical structure, and the inner diameter of the pressurized flow channel (102) gradually decreases along the direction from the fluid inlet to the fluid outlet of the pressurized flow channel (102).

4. The fluid boosting propulsion device according to claim 3, characterized in that: The caliber of the fluid inlet of the boosting flow channel (102) is 1.1-30 times the caliber of the fluid outlet of the boosting flow channel (102).

5. The fluid boosting propulsion device according to claim 4, characterized in that: The caliber of the fluid inlet of the boosting flow channel (102) is 1.5-20 times the caliber of the fluid outlet of the boosting flow channel (102).

6. The fluid boosting propulsion device according to claim 5, characterized in that: The caliber of the fluid inlet of the boosting flow channel (102) is 2-10 times the caliber of the fluid outlet of the boosting flow channel (102).

7. The fluid boosting propulsion device according to any one of claims 1-2 and 4-6, characterized in that: On the front and rear faces of the rotating body (101), the fixed sleeve (2) extends to cover the extent that the edge of the fixed sleeve (2) at least extends to be tangent to the inner edges of the fluid inlet and fluid outlet of the pressurized flow channel (102).

8. The fluid boosting propulsion device according to any one of claims 1-2 and 4-6, characterized in that: The front gap port of the front gap (301) is vertically connected to the fluid inlet of the pressurized flow channel (102), and the rear gap port of the rear gap (303) is vertically connected to the fluid outlet of the pressurized flow channel (102).

9. The fluid boosting propulsion device according to any one of claims 1-2 and 4-6, characterized in that: The gap thickness of the dynamic-static return gap (3) does not exceed 5 mm.

10. The fluid boosting propulsion device according to claim 9, characterized in that: The gap thickness of the dynamic-static return gap (3) is 0.1-3 mm.

11. The fluid boosting propulsion device according to claim 10, characterized in that: The gap thickness of the dynamic-static return gap (3) is 0.3-2 mm.

12. The fluid boosting propulsion device according to any one of claims 1-2, 4-6, 10-11, characterized in that: The device comprises a plurality of pressurizing flow channels (102), wherein the plurality of pressurizing flow channels (102) are evenly distributed along the circumferential direction on the outer side of a preset rotating shaft or a preset shaft hole of a rotating body (101) and form a group of pressurizing rings.

13. The fluid boosting propulsion device according to claim 12, characterized in that: On the rotating body (101) outside the preset rotating shaft or the preset shaft hole, multiple groups of boosting ring groups are arranged from the inside to the outside along the radial direction of the rotating body (101).

14. The fluid boosting propulsion device according to any one of claims 1-2, 4-6, 10-11, and 13, characterized in that: The device further comprises a driving device (4); the driving device (4) is arranged at the front end side of the rotary supercharger (1) and is connected to a preset rotating shaft or a preset shaft hole of the rotating body (101) via a driving shaft (401).

15. The fluid boosting propulsion device according to any one of claims 1-2, 4-6, 10-11, and 13, characterized in that: The device further comprises a flow guiding mechanism (5); the flow guiding mechanism (5) comprises a flow guiding inner cover (501) and a flow guiding outer shell (502); the flow guiding inner cover (501) is a conical structure that is buckled onto the rear end of the rotating body (101), and the bottom end of the flow guiding inner cover (501) is connected to the rotating body (101); the flow guiding outer shell (502) is a conical structure with a sleeve cover arranged outside the flow guiding inner cover (501), and the bottom end of the flow guiding outer shell (502) is connected to a fixed sleeve (2) covering the rear end of the rotating body (101); a flow guiding channel (503) is formed between the outer surface of the flow guiding inner cover (501) and the inner surface of the flow guiding outer shell (502), and the fluid inlet of the flow guiding channel (503) is connected to the fluid outlet of the pressurized flow channel (102).

16. The fluid boosting propulsion device according to claim 15, characterized in that: The flow guide channel (503) is an expanding diameter channel extending radially from outside to inside and obliquely backward along the flow guide inner cover (501).

17. The fluid boosting propulsion device according to claim 16, characterized in that: The caliber of the fluid outlet of the diversion channel (503) is 1.1-10 times the caliber of the fluid inlet of the diversion channel (503).

18. The fluid boost propulsion device according to claim 17, characterized in that: The caliber of the fluid outlet of the diversion channel (503) is 1.5-8 times the caliber of the fluid inlet of the diversion channel (503).

19. The fluid boost propulsion device according to claim 18, characterized in that: The caliber of the fluid outlet of the diversion channel (503) is 1.8-5 times the caliber of the fluid inlet of the diversion channel (503).

20. The fluid boosting propulsion device according to any one of claims 1-2, 4-6, 10-11, 13, and 16-19, characterized in that: The device further comprises a fluid guide mechanism (6); the fluid guide mechanism (6) is mounted at the front end of the rotary supercharger (1), and comprises a guide mechanism body (601), a radial guide outer ring (602), a radial guide inner ring (603), and an axial guide mechanism (604); the radial guide outer ring (602) is arranged at the outer peripheral edge of the rear end of the guide mechanism body (601), so that the radial guide outer ring (602) surrounds the front end of the rotating body formed by the rotation of the fluid inlet at the supercharged flow channel (102). The radial guide inner ring (603) is fixedly connected to the middle of the rear end of the guide mechanism body (601) and is arranged concentrically with the radial guide outer ring (602), so that the radial guide inner ring (603) surrounds the inner side of the front end of the rotating body formed by the rotation of the fluid inlet of the boost flow channel (102); the axial guide mechanism (604) is arranged inside the fluid outlet end of the guide mechanism body (601), and the axial guide mechanism (604) is located upstream of the fluid inlet of the boost flow channel (102).

21. The fluid boost propulsion device according to claim 20, characterized in that: A guide plate (605) is provided on the radial guide outer ring (602), the radial guide inner ring (603), and the axial guide mechanism (604); the guide plate (605) is a curved structure or an inclined structure.

22. The fluid boost propulsion device according to claim 21, characterized in that: The bending direction or the tilting direction of the guide plate (605) is the same as the spiral direction of the boosting flow channel (102).

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