Leading edge suction force thrust device

Abstract

A leading edge suction force thrust device is disclosed. The leading edge suction force thrust device, according to the present invention, comprises: a housing having, on the front end thereof, an inlet through which water flows in, and, on the rear end thereof, a drainage hole through which the water is drained; and a thrust unit for generating thrust to push the water, which has flown in through the inlet of the housing, to the drainage hole by shaking the water left and right. According to such present invention, the effect is gained where the independent operation of a leading edge suction force may be induced through the modularized thrust device, and thus a plurality of the thrust devices may be connected in series or in parallel so as to be used for a ship.

Description

Front suction thrust device

[0001] The present invention relates to a leading edge suction thrust device, and more particularly, to a leading edge suction thrust device capable of connecting modular thrust devices in series or parallel to a ship, in which the leading edge suction of a wing operates independently.

[0002] As is well known, thrust is the force that pushes an object in the direction of motion, and is the propulsive force generated by the rotation of a propeller or the recoil of injected gas.

[0003] The steady state around a streamlined wing is a state in which there is no time variation of the flow in the coordinate system fixed to the wing, and there is a lift force acting perpendicular to the streamlined thin wing in the steady state under the angle of attack, a leading edge suction force due to the low pressure at the wing leading edge, and a resistance acting in the opposite direction of the flow.

[0004] Here, the leading edge suction and resistance act in opposite directions and are similar in magnitude, so they cancel each other out, and only the lift force acts as the dominant fluid force on the wing.

[0005] This fluid power is being utilized as a control or anti-gravity device in aircraft and ships, and propellers, which are propulsion devices that continuously create lift, are being applied to aircraft and ships, but there has been a problem that it is difficult to connect them in series or parallel due to installation difficulties.

[0006] Meanwhile, in an abnormal situation, the angle of attack changes and causes separation of the flow at the leading edge of the wing, putting the wing in an abnormal state where an abnormal fluid force acts on the wing, and at this time, the leading edge suction force acts as thrust.

[0007] However, in normal situations, uniform flow is assumed in the fixed coordinate system of the wing, but abnormal situations may occur due to non-uniform flow.

[0008] At this time, the combination of flapping and pitching movements creates an abnormal situation.

[0009] Although the above technology is being used to produce thrust for ships, there was a problem with connecting it in series or parallel.

[0010] The present invention was developed to solve the conventional problems as described above, and its purpose is to provide a leading edge suction thrust device that can be connected in series or in parallel to a ship, which is a modular thrust device in which the leading edge suction of a wing operates independently in an abnormal situation.

[0011] In order to achieve the above object, a front suction thrust device according to an embodiment of the present invention comprises a housing having an inlet at a front end through which water flows in and a drain at a rear end through which water is discharged, a thrust unit for generating thrust to push water flowing into the inlet of the housing to the drain by shaking it left and right, wherein the thrust unit comprises a case installed inside the housing and having tailgates on both sides of the rear end, a drive motor having a drive shaft connected to vertically penetrate the inside of the front end of the case, a drive crank rotatably connected to the drive shaft of the drive motor, a linear link connected to convert the rotational motion of the drive crank into a forward and backward linear motion, a cross arm connected orthogonally to the rear end of the linear link and having driven guide slits on both left and right sides, a driven crank having driven crank pins each connected to the driven guide slits of the cross arm to convert the forward and backward linear motion into a rotational motion, and a member having one end eccentrically connected to the driven crank and the other end exposed to the outside of the case through the tailgate so as to simultaneously shake left and right in accordance with the rotational motion of the driven crank. It may include a wagtail that generates thrust to push water flowing into the inlet to the drain.

[0012] At this time, a mesh-shaped baffle net may be installed in the housing to break the vortex formed in the thrust unit by colliding it and drain it into a drain.

[0013] The above case can be installed in a floating state in the center of the housing by the front support and the rear support.

[0014] The above driving crank includes a driving crank shaft connected to the upper end of the driving shaft and an eccentric driving crank pin, the driving crank pin is connected to the front end of the linear link by a crank guide, and a driving pin guide slit may be formed in the crank guide to guide eccentric rotation of the driving crank pin.

[0015] According to the present invention, there is an effect that a plurality of forward suction forces can be connected in series or parallel to a ship by inducing independent operation of the forward suction force through a modular thrust device.

[0016] Figure 1 is a plan view showing the overall structure according to an embodiment of the present invention.

[0017] Figure 2 is a cross-sectional view taken along line AA of Figure 1.

[0018] Figure 3 is an enlarged view showing the thrust unit of Figure 2.

[0019] Figure 4 is a plan view showing the thrust unit of Figure 3.

[0020] Figures 5 to 8 are operating diagrams showing the operating state of a thrust unit according to an embodiment of the present invention.

[0021] - Explanation of drawing symbols -

[0022] 100: Housing 110: Inlet

[0023] 120: Drain 200: Thrust unit

[0024] 210: Case 220: Drive motor

[0025] 240: Drive crank 250: Linear link

[0026] 260: Crank guide 270: Cross arm

[0027] 280: Driven crank 290: Wagtail

[0028] Hereinafter, in order to fully understand the present invention, a preferred embodiment of the present invention will be described with reference to the attached drawings.

[0029] The embodiments of the present invention may be modified in various ways, and the scope of the present invention should not be construed as being limited to the embodiments detailed below. These embodiments are provided to more fully explain the present invention to those of ordinary skill in the art.

[0030] Accordingly, the shapes of components depicted in the drawings may be exaggerated to emphasize a clearer explanation, and it should be noted that identical components may be depicted with the same reference numerals in each drawing.

[0031] In addition, detailed descriptions of known functions and configurations that may unnecessarily obscure the gist of the present invention may be omitted.

[0032] A front suction thrust device according to an embodiment of the present invention includes a housing (100) having an inlet (110) at a front end through which water flows in and a drain (120) at a rear end through which water flows out, and a thrust unit (200) that generates thrust to shake water flowing in through the inlet (110) of the housing (100) left and right and push it out through the drain (120).

[0033] The housing (100) is formed in a hexahedral shape with a flow path (130) to drain water flowing into the inlet (110) to the drain (120) and is installed on one side of the hull that generates propulsion.

[0034] Referring to FIGS. 1 and 2, an inlet (110) is provided at the center of the front end of the housing (100) to allow water to flow in, and a drain (120) is provided at the center of the rear end to drain the water that has flowed in.

[0035] And, a water flow path (130) is formed inside between the inlet (110) and the drain (120) of the housing (100), and a thrust unit (200) that generates thrust is installed.

[0036] In addition, a mesh-shaped baffle net (140) is installed inside the drain (120) of the housing (100) to break the vortex formed in the thrust unit (200) by colliding with it and then drain it through the drain (120).

[0037] The thrust unit (200) includes a case (210) installed inside the housing (100) and having tailgates (211) on both sides of the rear end, a drive motor (220) connected to a drive shaft (221) so as to vertically penetrate the inside of the front end of the case (210), a drive crank (240) rotatably connected to the drive shaft (221) of the drive motor (220), a linear link (250) connected to change the rotational motion of the drive crank (240) into a forward and backward linear motion, a cross arm (270) connected orthogonally to the rear end of the linear link (250) and having driven guide slits on both left and right sides, and a driven crank pin (282) connected to the driven guide slit of the cross arm (270) to change the forward and backward linear motion into a rotational motion, one end of which is eccentrically connected to the driven crank (280) and the other end of which passes through the tailgate (211) and passes through the case (210). It includes a wagtail (290) that is exposed to the outside and swings left and right simultaneously with the rotational movement of the driven crank (280) to generate thrust that pushes water flowing into the inlet (110) to the drain (120).

[0038] The case (210) is formed in the shape of a hollow hexahedron inside and is supported by a front support (201) and a rear support (202), so it is installed floating in the center of the housing (100).

[0039] Referring to FIGS. 1 and 2, a tailgate (211) is provided on both rear sides of the case (210) so that the wagtail (290) penetrates the outside of the case (210).

[0040] The drive motor (220) generates driving force to rotate the drive crank (240).

[0041] Referring to FIGS. 1 and 2, a drive motor (220) is provided with a drive shaft (221). This drive shaft (221) is connected in an orthogonal direction through a gearbox (230) having a bevel gear and vertically penetrates the inside of the front end of the case (210).

[0042] And the drive shaft (221) is guided to rotate by the front bushing (203) installed on the center bottom of the front end of the case (210).

[0043] The drive crank (240) is installed at the center of the front end of the case (210) and is rotatably connected to the drive shaft (221) of the drive motor (220).

[0044] Referring to FIGS. 3 and 4, the drive crank (240) is implemented as a disc crank having a drive crank shaft (241) connected to the upper end of the drive shaft (221) and an eccentric drive crank pin (242).

[0045] That is, the drive crank (240) converts the rotational motion by the driving force of the drive motor (220) into linear motion.

[0046] The linear link (250) is connected to change the rotational motion of the drive crank (240) into forward and backward linear motion.

[0047] Referring to FIGS. 3 and 4, the front end of the linear link (250) is connected to the drive crank pin (242) of the drive crank (240) through a crank guide (260), and the rear end is connected to the center of the cross arm (270).

[0048] Here, a long drive pin guide slit (261) is formed in the left and right direction in the crank guide (260) to guide the eccentric rotation of the drive crank pin (242), thereby enabling the forward and backward linear movement of the linear link (250).

[0049] These linear links (250) are supported so that they can move forward and backward linearly by a link support (205) installed on the bottom of the case (210).

[0050] The cross arm (270) is formed in a long bar shape in the horizontal direction and is connected orthogonally to the rear end of the linear link (250).

[0051] Referring to Fig. 4, a driven pin guide slit (271) is formed long in the left and right directions at both ends of the cross arm (270) to guide the eccentric rotation of the driven crank pin (282) described later.

[0052] The driven crank (280) is rotatably installed at the rear center of the case (210) and has the function of converting the linear motion of the cross arm (270) into rotational motion.

[0053] Referring to FIGS. 3 and 4, the driven crank (280) is implemented as a disc crank having a driven crank shaft (281) rotatably coupled to a rear bushing (204) and an eccentric driven crank pin (282).

[0054] And the driven crank pin (282) is connected to the driven pin guide slit (271) of the cross arm (270) so that rotational movement is guided.

[0055] That is, the driven crank (280) converts the linear motion of the cross arm (270) into rotational motion in a symmetrical direction.

[0056] One end of the wagtail (290) is eccentrically connected to the driven crank (280), and the other end is connected to be exposed to the outside of the case (210) through the tailgate (211).

[0057] Referring to Fig. 2, the wagtail (290) is formed in the shape of a fish's tail fin and is exposed to the outside of the case (210) through the tailgate (211). A tail rod (291) formed long in the front-back direction is provided at the tip of the wagtail (290) and is eccentrically connected to one side of the driven crank (280).

[0058] That is, the wagtail (290), which is composed of a left and right pair, simultaneously shakes left and right in accordance with the rotational movement of the driven crank (280) and generates thrust that pushes water flowing into the inlet (110) toward the drain (120).

[0059] The operation of generating thrust by an embodiment of the present invention configured in this manner is described in detail as follows.

[0060] First, the driving force of the driving motor (220) is transmitted to the driving shaft (221) through the gearbox (230), and the driving crank (240) rotates around the driving crank shaft (241) by the driving of the driving shaft (221).

[0061] At this time, the driving crank pin (242) is positioned at the center point of the driving pin guide slit (261) by the rotation of the driving crank (240) while positioned at the right end of the driving pin guide slit (261) as shown in FIG. 5, and the linear link (250) is converted into a linear motion in the direction of the front end of the case (210) to advance the cross arm (270) and rotate the driven crank (280).

[0062] Then, a pair of wagtails (290) connected to the driven crank (280) are rotated to gather at the center as shown in Fig. 6.

[0063] By the rotation of the driving crank (240), the driving crank pin (242) is guided from the center of the driving pin guide slit (261) toward the left end as shown in FIG. 7, and the linear link (250) moves linearly toward the rear end of the case (210) to move the cross arm (270) backward, thereby causing the driven crank (280) to rotate, and thus a pair of wagtails (290) to rotate outward.

[0064] Continuing, as the drive crank (240) rotates, the drive crank pin (242) is guided toward the center of the drive pin guide slit (261) as shown in FIG. 8 to advance the linear link (250) and the cross arm (270), so that the pair of wagtails (290) rotate to spread outward further according to the rotation of the driven crank (280).

[0065] When the above-described process continues uniformly, the wagtail (290) pushes the water flowing into the inlet (110) toward the drain (120) to generate thrust, and the vortex physically formed in this process is broken and drained as it passes through the baffle net (140).

[0066] Therefore, according to the embodiment of the present invention, there is an advantage in that a plurality of forward suction forces can be connected in series or parallel to a ship by inducing independent operation of the forward suction force through a modular thrust device.

[0067] The embodiments of the present invention described above are merely exemplary, and those skilled in the art to which the present invention pertains will readily appreciate that various modifications and equivalent other embodiments are possible.

[0068] Therefore, it can be well understood that the present invention is not limited to the forms mentioned in the detailed description above.

[0069] Accordingly, the true technical protection scope of the present invention should be determined by the technical idea of ​​the appended claims, and the present invention should be understood to include the technical idea defined by the appended claims and all modifications, equivalents, and substitutes within the scope thereof.

Claims

1. A housing having an inlet at the front end through which water flows in and a drain at the rear end through which water flows out; and A thrust unit that generates thrust to shake water flowing into the inlet of the housing left and right and push it out into the drain; including, The above thrust unit is, A case installed inside the above housing and having tailgates on both sides of the rear end; A drive motor having a drive shaft connected so as to vertically penetrate the interior of the tip of the above case; A drive crank rotatably connected to a drive shaft of the above drive motor; A linear link connected to change the rotational motion of the above driving crank into forward and backward linear motion; A cross arm connected orthogonally to the rear end of the above linear link and having a driven guide slit on each of the left and right sides; A driven crank having driven crank pins that are respectively connected to the driven guide slits of the above cross arms to change the forward and backward linear motion into rotary motion; and A front suction thrust device characterized by including a wagtail, which is eccentrically connected to the driven crank at one end and exposed to the outside of the case through the tailgate, and which simultaneously swings left and right in accordance with the rotational movement of the driven crank to generate thrust that pushes water introduced into the inlet to the drain port.

2. In paragraph 1, A front suction thrust device characterized in that the housing has a mesh-shaped baffle net installed to break the vortex formed in the thrust unit by colliding it and drain it through a drain.

3. In paragraph 1, A front suction thrust device characterized in that the case is installed in a floating state in the center of the housing by the front support and the rear support.

4. In paragraph 1, The above driving crank includes a driving crank shaft connected to the upper end of the driving shaft; and an eccentric driving crank pin; The above driving crank pin is connected to the tip of the linear link by a crank guide, A front suction thrust device characterized in that a drive pin guide slit is formed in the crank guide to guide the eccentric rotation of the drive crank pin.

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