U.S. patent application number 15/122924 was filed with the patent office on 2017-03-16 for centrifugal propulsion apparatus and ship having same.
The applicant listed for this patent is Kil Bong SONG. Invention is credited to Kil Bong SONG.
Application Number | 20170073055 15/122924 |
Document ID | / |
Family ID | 54072104 |
Filed Date | 2017-03-16 |
United States Patent
Application |
20170073055 |
Kind Code |
A1 |
SONG; Kil Bong |
March 16, 2017 |
CENTRIFUGAL PROPULSION APPARATUS AND SHIP HAVING SAME
Abstract
A centrifugal propulsion apparatus capable of forward and
backward movement, and a ship having the same, the apparatus
includes two impellers which are rotated by a power shaft, face
each other, and are capable of jetting a fluid in opposite
directions; and a power transmission unit provided between the
power shaft and the two impellers so as to connect one impeller
between the two impellers and the power shaft or connect the other
impeller and the power shaft according to a rotational direction of
the power shaft.
Inventors: |
SONG; Kil Bong; (Seoul,
KR) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
SONG; Kil Bong |
Seoul |
|
KR |
|
|
Family ID: |
54072104 |
Appl. No.: |
15/122924 |
Filed: |
March 12, 2015 |
PCT Filed: |
March 12, 2015 |
PCT NO: |
PCT/KR2015/002399 |
371 Date: |
September 1, 2016 |
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
B63H 23/34 20130101;
B63H 23/321 20130101; F04D 29/043 20130101; B63H 2023/328 20130101;
B63H 23/06 20130101; B63H 5/14 20130101; F04D 29/22 20130101; B63H
1/26 20130101 |
International
Class: |
B63H 23/06 20060101
B63H023/06; F04D 29/043 20060101 F04D029/043; B63H 23/32 20060101
B63H023/32; F04D 29/22 20060101 F04D029/22; B63H 23/34 20060101
B63H023/34; B63H 5/14 20060101 B63H005/14 |
Foreign Application Data
Date |
Code |
Application Number |
Mar 12, 2014 |
KR |
10-2014-0028998 |
Claims
1. A centrifugal propulsion apparatus comprising: two impellers,
which are rotated by a power shaft, face each other, and are
configured to jet a fluid in opposite directions; and a power
transmission unit provided between the power shaft and two
impellers to connect the power shaft to one or the other of the two
impellers, according to a rotational direction of the power
shaft.
2. The centrifugal propulsion apparatus of claim 1, wherein each of
the two impellers comprises: a reflection shade having both ends
opened and an increasing width from one end to the other end; and a
plurality of blades provided in the reflection shade, disposed in
radial directions from a rotational central axis and having
increasing width perpendicular to the rotational central axis with
increasing width of the reflection shade.
3. The centrifugal propulsion apparatus of claim 2, wherein the
reflection shade is coupled to the plurality of blades.
4. The centrifugal propulsion apparatus of claim 2, wherein one of
the two impellers further comprises a streamlined induction layer
that surrounds the rotational central axis and has gradually
increasing width with increasing width of the reflection shade.
5. The centrifugal propulsion apparatus of claim 1, wherein the two
impellers use the power shaft as a rotation center.
6. The centrifugal propulsion apparatus of claim 1, wherein the
power transmission unit comprises two ratchet gears that connect
the power shaft and each of the two impellers, and the two ratchet
gears are engaged when rotating in opposite directions.
7. The centrifugal propulsion apparatus of claim 6 wherein one of
the two ratchet gears comprises: a ratchet frame coupled to the
power shaft and having a latch installed therein; and a gear
coupled to the impeller and making a pair with the ratchet
frame.
8. The centrifugal propulsion apparatus of claim 1, further
comprising a diaphragm that is fixable to a ship, provided between
the two impellers, and being parallel to the power shaft.
9. The centrifugal propulsion apparatus of claim 8, further
comprising a fixing unit installed at the fixed diaphragm and
selectively fixing the two impellers to the fixed diaphragm.
10. The centrifugal propulsion apparatus of claim 8, wherein the
fixing unit comprises: a brake plate installed at the fixed
diaphragm, contacting an adjacent impeller of the two impellers and
preventing rotation of the adjacent impeller; and a brake shaft
rotatably coupling the brake plate to the fixed diaphragm.
11. The centrifugal propulsion apparatus of claim 8, further
comprising a bearing unit provided between the fixed diaphragm and
the power shaft.
12. The centrifugal propulsion apparatus of claim 1, further
comprising two nozzles disposed adjacent to each other outside of
the two impellers, connected to the two impellers and having widths
increasing with increasing distance from the two impellers.
13. A ship comprising: a body; an engine installed in the body; a
centrifugal propulsion apparatus of claim 1 installed in the body;
and a power shaft connecting the engine and the centrifugal
propulsion apparatus.
14. The ship of claim 13, further comprising an installation plate
rotatably installed in the body and having the centrifugal
propulsion apparatus installed therein.
15. The ship of claim 13, wherein the power shaft comprises a
portion coupled to the engine, a portion coupled to the centrifugal
propulsion apparatus, and a portion passing through the body and
connecting the two portions, and the three portions are configured
to fit one another by insertion and be separated from one another.
Description
TECHNICAL FIELD
[0001] The present invention relates to a centrifugal propulsion
apparatus and a ship having the same, and more particularly, to a
centrifugal propulsion apparatus capable of forward and backward
movement, and a ship having the same.
BACKGROUND ART
[0002] In general, a propulsion apparatus of a ship usually uses a
propeller or a jet drive method of jetting water. The biggest
problem of the propeller or the jet drive method is that both
methods have low efficiency.
[0003] Centrifugal force is force on an object moving along a
curved trajectory, outward from the center of the curvature. The
size of the centrifugal force is simply proportional to the mass or
radius of curvature of a revolving body and proportional to squared
angular speed. Thus, when the angular speed of the object increases
beyond a certain level, the centrifugal force increases
astonishingly.
[0004] Because strong force can be easily attained using
centrifugal force in this way, the centrifugal force has been
applied to a dehydrator of a washing machine, a centrifuge, and
generation of artificial gravity in a space station. Besides the
above-described advantages, a vehicle or submarine generally
attains its propulsion force due to action-reaction between a wheel
and ground or action-reaction between a propeller and water. In the
case of an airplane, lift is generated due to action-reaction
between a wing and air. Thus, due to the advantage of being able to
generate movement due to centrifugal force, attempts have been
steadily made for attaining propulsion force for moving an object
using centrifugal force.
DISCLOSURE
Technical Problem
[0005] However, in a conventional centrifugal propulsion apparatus
and a conventional ship having the same, forward and backward
movement is not possible using just one centrifugal propulsion
apparatus.
[0006] The present invention is directed to providing a centrifugal
propulsion apparatus capable of forward and backward movement and a
ship having the same. However, this objective is just exemplary,
and the scope of the invention is not limited thereby.
Technical Solution
[0007] One aspect of the present invention provides a centrifugal
propulsion apparatus including: two impellers, which are rotated by
a power shaft, face each other, and are configured to jet a fluid
in opposite directions; and a power transmission unit provided
between the power shaft and two impellers to connect the power
shaft to one or the other of the two impellers according to a
rotational direction of the power shaft.
[0008] Each of the two impellers may include: a reflection shade
having both ends opened and an increasing width from one end to the
other end; and a plurality of blades provided in the reflection
shade, disposed in a radial directions from a rotational central
axis and having increasing width perpendicular to the rotational
central axis with increasing width of the reflection shade.
[0009] The reflection shade may be coupled to the plurality of
blades.
[0010] One of the two impellers may further include a streamlined
induction layer that surrounds the rotational central axis and has
gradually increasing width with increasing width of the reflection
shade.
[0011] The two impellers may use the power shaft as a rotation
center.
[0012] The power transmission unit may include two ratchet gears
that connect the power shaft and each of the two impellers, and the
two ratchet gears may be engaged when rotating in opposite
directions.
[0013] One of the two ratchet gears may include: a ratchet frame
coupled to the power shaft and having a latch installed therein;
and a gear coupled to the impeller and making a pair with the
ratchet frame.
[0014] The centrifugal propulsion apparatus may further include a
diaphragm that is fixable to a ship, provided between the two
impellers, and being parallel to the power shaft.
[0015] The centrifugal propulsion apparatus may further include a
fixing unit installed at the fixed diaphragm and selectively fixing
the two impellers to the fixed diaphragm.
[0016] The fixing unit may include: a brake plate installed at the
fixed diaphragm, contacting an adjacent impeller of the two
impellers and preventing rotation of the adjacent impeller; and a
brake shaft rotatably coupling the brake plate to the fixed
diaphragm
[0017] The centrifugal propulsion apparatus may further include a
bearing unit provided between the fixed diaphragm and the power
shaft.
[0018] The centrifugal propulsion apparatus may further include two
nozzles disposed adjacent to each other outside of the two
impellers, connected to the two impellers and having widths
increasing with increasing distance from the two impellers.
[0019] Another aspect of the present invention provides a ship
including: a body; an engine installed in the body; the
above-described centrifugal propulsion apparatus installed in the
body; and a power shaft connecting the engine and the centrifugal
propulsion apparatus.
[0020] The ship may further include an installation plate rotatably
installed in the body and having the centrifugal propulsion
apparatus installed therein.
[0021] The power shaft may include a portion coupled to the engine,
a portion coupled to the centrifugal propulsion apparatus, and a
portion passing through the body and connecting the two portions,
and the three portions may be combined fit to and separated from
one another.
Advantageous Effects
[0022] As described above, according to embodiments of the present
invention having the above configuration, a centrifugal propulsion
apparatus capable of forward and backward movement and a ship
having the same can be implemented. Of course, the scope of the
invention is not limited by this effect.
DESCRIPTION OF DRAWINGS
[0023] FIG. 1 is a schematic cross-sectional conceptual view of a
centrifugal propulsion apparatus according to an embodiment of the
present invention and a ship having the same.
[0024] FIG. 2 is a schematic cross-sectional conceptual view of a
centrifugal propulsion apparatus according to an embodiment of the
present invention and part of a ship having the same.
[0025] FIG. 3 is a schematic cross-sectional conceptual view of a
centrifugal propulsion apparatus according to an embodiment of the
present invention and part of a ship having the same.
[0026] FIG. 4 is a schematic perspective view of a centrifugal
propulsion apparatus according to an embodiment of the present
invention and part of a ship having the same.
[0027] FIGS. 5 to 7 are schematic plan views of a centrifugal
propulsion apparatus according to other embodiments of the present
invention and part of a ship having the same.
[0028] FIG. 8 is a schematic cross-sectional conceptual view of a
centrifugal propulsion apparatus according to another embodiment of
the present invention and a ship having the same.
[0029] FIG. 9 is a schematic perspective view of movement of a
centrifugal propulsion apparatus according to the embodiment of
FIG. 8 and part of a ship having the same.
[0030] FIG. 10 is a detailed view of the concept of power
transmission according to the embodiments of FIGS. 8 and 9.
MODES OF THE INVENTION
[0031] As the invention allows for various changes and numerous
embodiments, particular embodiments will be illustrated in the
drawings and described in detail in the written description.
However, this is not intended to limit the present invention to
particular modes of practice, and it is to be appreciated that all
changes, equivalents, and substitutes that do not depart from the
spirit and technical scope of the present invention are encompassed
in the present invention. Similar reference numerals are used for
similar elements in the drawings.
[0032] It will be understood that, although the terms first,
second, A, B, etc. may be used herein to describe various elements,
these elements should not be limited by these terms. These terms
are only used to distinguish one element from another. For example,
a first element could be termed a second element, and, similarly, a
second element could be termed a first element, without departing
from the scope of the present invention. As used here, the term
"and/or" includes any and all combinations of one or more of the
associated listed items.
[0033] It will be understood that when an element is referred to as
being "connected" or "coupled" to another element, it can be
directly connected or coupled to the other element or intervening
elements may be present. In contrast, when an element is referred
to as being "directly connected" or "directly coupled" to another
element, there are no intervening elements present.
[0034] The terminology used herein is for the purpose of describing
particular embodiments only and is not intended to be limiting the
invention. As used herein, the singular forms "a," "an" and "the"
are intended to include the plural forms as well, unless the
context clearly indicates otherwise. It will be further understood
that the terms "comprises," "comprising," "includes" and/or
"including," when used herein, specify the presence of stated
features, integers, steps, operations, elements, and/or components,
but do not preclude the presence or addition of one or more other
features, integers, steps, operations, elements, components, and/or
groups thereof.
[0035] Unless otherwise defined, all terms (including technical and
scientific terms) used herein have the same meaning as commonly
understood by one of ordinary skill in the art to which this
invention belongs. It will be further understood that terms, such
as those defined in commonly used dictionaries, should be
interpreted as having a meaning that is consistent with their
meaning in the context of the relevant art and will not be
interpreted in an idealized or overly formal sense unless expressly
so defined here.
[0036] FIG. 1 is a schematic cross-sectional conceptual view of a
centrifugal propulsion apparatus according to an embodiment of the
present invention and a ship having the same. FIG. 2 is a schematic
cross-sectional conceptual view of a centrifugal propulsion
apparatus according to an embodiment of the present invention.
[0037] Referring to FIG. 1, the ship may include an engine 15
installed in a body 11 and a centrifugal propulsion apparatus 30
installed under the surface of water 18. The ship may include a
power shaft 16 that connects the engine 15 and the centrifugal
propulsion apparatus 30. That is, the centrifugal propulsion
apparatus 30 may receive rotational force of the engine through the
power shaft 16.
[0038] Here, the power shaft 16 may be divided into a portion
extending from the engine and a portion coupled to the centrifugal
propulsion apparatus 30. In this case, the portions of the power
shaft 16 may be connected to each other using a coupler, etc. Thus,
the centrifugal propulsion apparatus 30 may be easily separated
from the body 11 of the ship.
[0039] Also, the ship may further include a rudder 13 and a
direction shaft 12.
[0040] The centrifugal propulsion apparatus 30 may be rotated about
a rotational central axis C to generate a centrifugal force, may
jet a fluid in a predetermined direction (for example, in a radial
direction) using centrifugal force from inside of the centrifugal
propulsion apparatus 30, and may reflect the jetted fluid to jet
the fluid to the outside to obtain propulsion force.
[0041] Also, the centrifugal propulsion apparatus 30 may obtain the
propulsion force in both directions by jetting the fluid in
directions in which two impellers face each other. Hereinafter, the
centrifugal propulsion apparatus 30 will be described in
detail.
[0042] The centrifugal propulsion apparatus 30 may include two
impellers and a power transmission unit 50.
[0043] The two impellers may be rotated by the power shaft 16 and
may face each other. In addition, two impellers may jet the fluid
in opposite directions. Hereinafter, the two impellers will be
described as a first impeller and a second impeller.
[0044] The two impellers may jet the fluid from inside in a
predetermined direction and may reflect the jetted fluid. For
example, the first impeller may jet the fluid in a first direction.
Here, the first direction may be opposite to the forward direction
of the ship. The second impeller may jet the fluid in a second
direction. Here, the second direction may be opposite to the first
direction and opposite to the backward direction of the ship.
[0045] First, the impellers will be described with reference to
FIGS. 4 to 7.
[0046] FIG. 4 is an exploded perspective view of one of two
impellers. In detail, FIG. 4 is an exploded perspective view of the
first impeller. The second impeller is the same as or similar to
the first impeller and thus, detailed descriptions thereof will be
omitted.
[0047] One of the two impellers may include a reflection shade 32
and a plurality of blades 33. One impeller may include a shaft on
which the plurality of blades 33 are coupled to each other in the
radial direction. Here, the shaft may be a shaft pipe 31 into which
the power shaft 16 may be inserted, as illustrated. Of course, the
shaft is not limited thereto.
[0048] The reflection shade 32 may have both ends opened and an
increasing width from one end to the other end. For example, the
reflection shade 32 may have a shape of a truncated cone or funnel
in which upper and lower portions of the reflection shade 32 are
open and an inside thereof is hollow. Of course, the shape of the
reflection shade 32 is not limited to the truncated cone.
[0049] In this case, a central axis of the reflection shade 32 may
be parallel to an extension direction of the shaft pipe 31. In more
detail, the central axis of the reflection shade 32 and a central
axis of the shaft pipe 31 may be approximately in a straight
line.
[0050] The plurality of blades 33 may be provided in the reflection
shade 32 and may be disposed in a radial direction from their
central axis. In detail, the plurality of blades 33 may extend from
the shaft pipe 31 in the radial direction at the same angles. In
this case, the plurality of blades 33 may be coupled to the shaft
pipe 31 using welding, etc.
[0051] A width of each of the plurality of blades 33 perpendicular
to a rotational central axis C may increase as the width (or
radius) of the reflection shade 32 increases. For example, the
plurality of blades 33 may have approximately a parallelogram
shape.
[0052] Meanwhile, the reflection shade 32 may be rotated together
with the plurality of blades 33. In detail, the reflection shade 32
may be coupled to the plurality of blades 33. For example, an
outside surface of each of the plurality of blades 33 may be
fixedly coupled to an inside surface of the reflection shade 32
using welding, etc. Alternatively, the plurality of blades 33 and
the reflection shade 32 may also be integrally formed by
casting.
[0053] Meanwhile, the impeller may further include a streamlined
induction layer 34 that surrounds the rotational central axis C and
has a width gradually increasing as the width of the reflection
shade 32 increases. For example, the induction layer 34 may
surround the shaft pipe 31 and may be coupled to the shaft pipe 31
using welding, etc. In this case, the width of the induction layer
34 perpendicular to the rotational central axis C may be smaller
than the width of each of the plurality of blades 33. That is, the
induction layer 34 may not get out of the plurality of blades
33.
[0054] The induction layer 34 may guide the fluid that passes
through the reflection shade 32.
[0055] Thus, the first impeller may include a first reflection
shade 32, a plurality of first blades 33, a first induction layer
34, and a first shaft pipe 31. The second impeller may include a
second reflection shade 37, a plurality of second blades 38, a
second induction layer 39, and a second shaft pipe 36. Hereinafter,
each of the two impellers includes a reflection shade, a plurality
of blades, an induction layer, and a shaft pipe. However,
embodiments of the present invention are not limited thereto.
[0056] In this case, as illustrated in FIGS. 1 and 2, each of the
first reflection shade 32 and the second reflection shade 37 may
face a wide opening. Each of the first impeller and the second
impeller may use the power shaft 16 as a rotation center. In
addition, the first impeller and the second impeller may be rotated
in opposite directions.
[0057] In detail, the power shaft 16 may be inserted into the first
shaft pipe 31 and the second shaft pipe 36. That is, the first
shaft pipe 31 and the second shaft pipe 36 may surround the power
shaft 16. In this case, the first shaft pipe 31 may not be fixed to
the power shaft 16 but may be freely rotated. Also, the second
shaft pipe 36 may not be fixed to the power shaft 16 but may be
freely rotated.
[0058] Thus, the centrifugal propulsion apparatus 30 is capable of
forward and backward movement using one power shaft 16 so that the
configuration of the centrifugal propulsion apparatus 30 may be
simplified.
[0059] Also, each of the first impeller and the second impeller may
serve as a nozzle when it does not jet any fluid.
[0060] FIG. 5 is a plan view schematically illustrating an impeller
of the centrifugal propulsion apparatus 30 according to another
embodiment of the present invention. According to the current
embodiment, a plurality of blades 331 may be attached between the
shaft pipe 31 and the reflection shade 32 in a radial direction and
fixed thereto. Each of the plurality of blades 331 may have a shape
of a plate with straight edges.
[0061] FIG. 6 is a plan view schematically illustrating an impeller
of the centrifugal propulsion apparatus 30 according to another
embodiment of the present invention. According to the current
embodiment, a plurality of blades 332 may be curved blades 332,
each having a shape of a curved plate.
[0062] FIG. 7 is a front view schematically illustrating an
impeller of the centrifugal propulsion apparatus 30 according to
another embodiment of the present invention. According to the
current embodiment, a plurality of blades 333 may be propeller type
blades 333 each having a shape of a plate that is twisted into a
predetermined form.
[0063] Hereinafter, the power transmission unit 50 will be
described with reference to FIGS. 1 to 3.
[0064] The power transmission unit 50 may be provided between the
power shaft 16 and two impellers and may connect one of two
impellers and the power shaft 16 or connect the other impeller and
the power shaft 16 according to a rotational direction of the power
shaft 16.
[0065] The power transmission unit 50 may include two ratchet gears
that connect the power shaft 16 and each of the two impellers. In
detail, the power transmission unit may include a first ratchet
gear provided between the power shaft and the first impeller and a
second ratchet gear provided between the power shaft and the second
impeller.
[0066] The two ratchet gears may be engaged when rotating in
opposite directions. Specifically, the first ratchet gear may be
engaged when rotating clockwise and may connect the power shaft 16
and the first impeller. The second ratchet gear may be engaged when
rotating counterclockwise and may connect the power shaft 16 and
the second impeller.
[0067] In this case, when one of the two ratchet gears is rotated,
the other one may not be rotated. For example, when the power shaft
16 is rotated in a predetermined direction, the first ratchet gear
may be engaged and may be rotated together with the power shaft 16,
and the second ratchet gear may be released and may not be rotated
together with the power shaft 16. When the power shaft 16 is
rotated in the opposite direction, the second ratchet gear may be
engaged, and the first ratchet gear may be released.
[0068] Thus, the power transmission unit 50 may connect one power
shaft 16 and the two impellers selectively so that the centrifugal
propulsion apparatus 30 is capable of forward and backward
movement.
[0069] The first ratchet gear and the second ratchet gear are the
same as or similar to each other and thus, the first ratchet gear
will be described in detail.
[0070] The first ratchet gear may include a first ratchet frame 51
having a first latch 511 installed therein and a first gear 52 that
makes a pair with the first ratchet frame 51. Here, the first
ratchet frame 51 may be coupled to the power shaft 16 using a frame
fixing bolt 166, and the first gear 52 may be installed in the
first impeller. The frame fixing bolt 166 will be described with
reference to FIG. 10.
[0071] In more detail, the first gear 52 may be coupled to the
first induction layer 34 using a first turbine bolt 341. Of course,
embodiments of the present invention are not limited thereto, and
the first gear 52 may also be coupled to the first shaft pipe
31.
[0072] The first latch 511 may be engaged on or released from the
first gear 52 according to the rotational direction of the power
shaft 16. For example, the power shaft 16 may be clockwise rotated.
This will be later described in more detail in FIG. 10.
[0073] The second ratchet gear may include a second ratchet frame
55 having a second latch 551 installed therein and a second gear 56
that makes a pair with the second ratchet frame 55. Here, the
second ratchet gear 55 may be coupled to the power shaft 16 due to
the second latch 551, and the second gear 56 may be installed in
the second impeller.
[0074] In more detail, the second gear 56 may be coupled to an
inside of the second induction layer 39 by a second turbine bolt
391. Of course, embodiments of the present invention are not
limited thereto, and the second gear 56 may also be coupled to the
second shaft pipe 36.
[0075] The second latch 551 may be engaged on or released from the
second gear 56 according to the rotational direction of the power
shaft 16. For example, the power shaft 16 may be counterclockwise
rotated. This will be later described in more detail in FIG.
10.
[0076] Meanwhile, according to another embodiment of the present
invention, the centrifugal propulsion apparatus 30 may be fixed to
the body 11 of the ship and may further include a fixed diaphragm
63 provided between the two impellers.
[0077] The fixed diaphragm 63 may have approximately a plate shape
and may be lengthwise disposed along the extension direction of the
power shaft 16. Thus, the fixed diaphragm 63 may make the flow of
the fluid be parallel to the direction of the power shaft 16.
[0078] A plurality of fixed diaphragms 63 may be provided in the
radial direction from the power shaft 16.
[0079] One fixed diaphragm among the plurality of fixed diaphragms
63 may extend in a direction of the body 11 of the ship and may be
fixedly coupled to the body 11. Alternatively, as illustrated, one
fixed diaphragm among the fixed diaphragms 63 may be directly or
indirectly connected to an installation frame 61, and the
installation frame 61 may be fixedly installed to the body 11 of
the ship by an installation bolt 611. The centrifugal propulsion
apparatus 30 may further include the installation frame 61 and the
installation bolt 611.
[0080] Meanwhile, the centrifugal propulsion apparatus 30 may
further include a fixed outer case 62 that is a case. The fixed
outer case 62 may be provided between the two impellers and may
surround the fixed diaphragms 63. The fixed diaphragms 63 may be
connected and fixed to an inner circumferential surface of the
fixed outer case 62 in the radial direction. Also, the installation
frame 61 may be coupled to an outside surface of the fixed outer
case 62.
[0081] Meanwhile, the centrifugal propulsion apparatus 30 may
further include a bearing unit provided between the fixed diaphragm
63 and the power shaft 16. The bearing unit may include a bearing
housing 65 and a bearing 67.
[0082] The bearing housing 65 may be provided between the two
impellers, i.e., approximately in the middle of the two impellers.
In addition, the bearing housing 65 may surround the power shaft
16. The bearing housing 65 may be coupled to the fixed diaphragm 63
in the radial direction. That is, the fixed diaphragms 63 may be
provided between the fixed outer case 62 and the bearing housing
65. The bearing housing 65 may have a streamlined shape so that the
flow of the fluid may be smooth.
[0083] The bearing 67 may be provided in the bearing housing 65 and
may be coupled to the bearing housing 65 and the power shaft 16.
Thus, the bearing unit may assist the power shaft 16 in smoothly
rotating and may support the power shaft 16.
[0084] Meanwhile, when one of the two impellers is rotated, the
other one may be fixed. In detail, when the first impeller is
rotated, the second impeller needs to be fixed not to disturb the
flow of the fluid, or vice versa.
[0085] Thus, the centrifugal propulsion apparatus 30 may further
include a fixing unit that selectively fixes two impellers. For
example, when the first impeller is rotated, the fixing unit may
stop the second impeller to prevent the second impeller from being
rotated by the jetting pressure of the fluid, or vice versa.
[0086] The fixing unit may include a brake plate 68 that moves
along the flow of the fluid. Here, the brake plate 68 may be
installed at the fixed diaphragms 63 and may have a length that may
reach an adjacent impeller of the two impellers. In detail, one end
of the brake plate 68 adjacent to the first impeller may be
rotatably coupled to the fixed diaphragm 63, and the other end of
the brake plate 68 may be free. Thus, when the brake plate 68 is
rotated in a direction of the first impeller, the brake plate 68
may contact the first impeller, and the first impeller may be
maintained in a stopped state.
[0087] A plurality of brake plates 68 may be adjacent to each of
the first impeller and the second impeller.
[0088] The fixing unit may include a brake shaft 681 by which the
brake plate 68 is rotatably installed to the fixed diaphragm 63.
The brake shaft 681 may be installed approximately perpendicular to
the direction of the flow of the fluid. That is, the brake shaft
681 may be installed approximately perpendicular to the power shaft
16.
[0089] Meanwhile, the fixing unit may further include a brake shaft
plate 682. That is, the brake shaft plate 682 may be coupled to the
fixed diaphragm using welding or a screw, etc. and rotatably
coupled to the brake plate 68 by the brake shaft 681. Two brake
shaft plates 682 may be provided adjacent to each of the first
impeller and the second impeller.
[0090] Hereinafter, an operation of the fixing unit will be
described.
[0091] When the first impeller is rotated, two brake plates 68 may
be disposed in a first direction due to the fluid jetted from the
first impeller. In this case, the brake plate 68 adjacent to the
second impeller may contact a blade 38 of the second impeller and
prevent the second impeller from being rotated.
[0092] Contrary to this, when the second impeller is rotated, two
brake plates 68 may be disposed in a second direction due to the
fluid jetted from the second impeller. In this case, the brake
plate 68 adjacent to the first impeller may contact a blade 33 of
the first impeller and prevent the first impeller from being
rotated.
[0093] FIGS. 8, 9, and 10 are conceptual views and a perspective
view schematically illustrating the centrifugal propulsion
apparatus 30 according to another embodiment of the present
invention and a part of a ship having the same. The centrifugal
propulsion apparatus 30 according to the current embodiment and the
ship having the same are the same as or similar to the centrifugal
propulsion apparatus 30 according to the above-described embodiment
and the ship having the same, and, thus, redundant descriptions
thereof will be omitted.
[0094] Referring to FIG. 8, the ship may include an installation
plate 25 which is rotatably coupled to a body and on which a
centrifugal propulsion apparatus is installed. In detail, the
installation plate 25 may be rotatably coupled to the body by a
hinge 22. Meanwhile, the ship may further include a fixing bolt 26
that couples the installation plate 25 and the body 11 to firmly
couple the installation plate 25 to the body 11. Here, the fixing
bolt 26 may couple the installation plate 25 and the body 11 from a
location at a long distance from the hinge 22.
[0095] In addition, the ship may further include a movement ring 28
coupled to the installation plate 25 so that the installation plate
25 in the body 11 may be smoothly rotated and maintained in a
rotated state. Here, the movement hook 28 may be disposed at a long
distance from the hinge 22.
[0096] As illustrated in FIG. 9, a worker may rotate the
installation plate 25 by holding the movement ring 28. The worker
may tie the movement ring 28 with a rope, etc. to maintain the
installation plate 25 in a rotated state.
[0097] In this case, the ship may further include a barrier wall 21
installed in the body. The barrier wall 21 may be installed
approximately perpendicular to the surface of water and may include
a movement hole 29 into which the movement ring 28 may be
inserted.
[0098] Thus, the worker may rotate the installation plate 25 until
the movement ring 28 is inserted into the movement hole 29. The
worker may insert a pin, etc. into the movement ring 28 inserted
into the movement hole 29 to fix the pin to a barrier plate 21.
[0099] Meanwhile, the power shaft 16 needs to be separated from the
centrifugal propulsion apparatus 30 so that the installation plate
25 may be rotated. For example, the power shaft 16 may be separated
into a portion coupled to the engine 15 and a portion coupled to
the centrifugal propulsion apparatus 30. In detail, the power shaft
16 may include at least two shafts that may be coupled to or
separated from each other. In this case, the power shaft 16 may be
divided into several portions that may be combined fit to one
another. In detail, the portions of the power shaft 16 may be
separated from and coupled to one another in a slip joint form.
[0100] Hereinafter, an example of a coupling and separation
structure of the power shaft 16 will be described.
[0101] Referring to FIGS. 8 to 10, the power shaft 16 may include a
shaft directly coupled to an engine, a shaft directly coupled to
the centrifugal propulsion apparatus 30, and a connection shaft
that connects these two shafts. Here, a portion directly coupled to
the centrifugal propulsion apparatus 30 is hereinafter referred to
as a turbine shaft 160. The connection shaft is hereinafter
referred to as a slip power shaft 80.
[0102] The shaft directly coupled to the engine of the power shaft
16 may include a power protrusion slip 17 formed at one end of the
shaft. The slip power shaft 80 may include a slip groove 82 into
which the power protrusion slip 17 is inserted and which is formed
at one end of the slip power shaft 80, and a connection protrusion
slip 83 formed at the other end of the slip power shaft 80. The
turbine shaft 160 may include a turbine shaft groove 169 into which
the connection protrusion slip 83 is inserted and which is formed
at one end of the turbine shaft 160.
[0103] In this case, the power protrusion slip 17 and the slip
groove 82 may have corresponding shapes. This also applies to the
connection protrusion slip 83 and the turbine shaft groove 169.
[0104] The ship may further include a shaft bolt 86 that passes
through the slip power shaft 17 and the power protrusion slip 17
and couples them to securely couple the slip power shaft 80 and the
power protrusion slip 17.
[0105] The slip power shaft 80 needs to reduce friction, because it
passes through the body 11 of the ship. Thus, the ship may further
include a fixed bushing 78 which is installed at the body 11 and
through which the slip power shaft 80 passes. The slip power shaft
80 may include a slip friction portion 81 inserted into the fixed
bushing 78. Here, the slip friction portion 81 may have an
approximate pipe shape.
[0106] Meanwhile, the slip power shaft 80 may be moved in an axial
direction for coupling and separation. In this case, the ship may
further include a movement handle 88 fixedly coupled to the slip
power shaft 80 so that the worker may move the slip power shaft 80
more easily. The movement handle 88 may be provided in the body
11.
[0107] Separation of the centrifugal propulsion apparatus 30 will
be described with reference to FIGS. 8 and 9. Coupling of the
centrifugal propulsion apparatus 30 is performed in reverse order
with respect to the separation and thus, detailed descriptions
thereof will be omitted.
[0108] When separating the centrifugal propulsion apparatus 30 to
repair it, the worker may remove a shaft bolt 86 and may pull the
movement handle 88 toward the engine 15 to remove the slip power
shaft 80 inserted into the centrifugal propulsion apparatus 30.
[0109] The worker may release the fixing bolt 26 coupled to the
installation plate 25 and move the installation plate 25 in which
the centrifugal propulsion apparatus 30 is installed and lean
toward the barrier wall 21 with respect to the hinge 22. In this
case, the movement ring 28 may be inserted into the movement hole
29.
[0110] Meanwhile, the coupling relationship between the turbine
shaft 160 and the centrifugal propulsion apparatus 30 will be
described in detail with reference to FIG. 10. In the current
drawing, the turbine shaft 160 may be the same as or similar to the
power shaft 16 of FIG. 1. Also, the coupling relationship may also
be similar.
[0111] Meanwhile, the first ratchet frame 51 and the second ratchet
frame 55 may each be coupled to both sides of the turbine shaft 160
using the frame fixing bolt 166. The first gear 52 and the second
gear 56 may be installed, as described above.
[0112] The first ratchet gear may further include a latch shaft 519
and a latch spring 518. Coupling of the first ratchet frame 51 and
the first gear 52 may be determined by a direction in which they
are combined with the latch spring 518 that inserts the first latch
511 into the latch shaft 519 to support the first latch 511.
Coupling of the second ratchet frame 55 and the second gear 56 may
be the same.
[0113] As described above, the slip power shaft 80 is included in
the ship as an element of the power shaft 16. However, embodiments
of the present invention are not limited thereto, and the slip
power shaft 80 may also be included in the configuration of the
centrifugal propulsion apparatus 30.
[0114] Meanwhile, the centrifugal propulsion apparatus 30 may
include two nozzles 71 and 72 disposed adjacent to each other
outside of the two impellers. Two nozzles 71 and 72 may be
configured to efficiently accommodate the fluid jetted from two
impellers. That is, two nozzles 71 and 72 may make inflow and
jetting of the fluid smooth. In detail, two nozzles 71 and 72
include a first nozzle 71 and a second nozzle 72.
[0115] The first nozzle 71 may be adjacent to a narrow opening of
the first impeller. For example, the first nozzle 71 may gradually
flare out, that is, in a form that is opposite to the first
reflection shade 32. In this case, the centrifugal propulsion
apparatus 30 may include a fixed shade 73 that surrounds the first
reflection shade 32. The fixed shade 73 may have a shape that is
the same as but slightly larger than the first reflection shade 32.
The fixed shade 73 may be coupled to the first nozzle 71.
[0116] The first nozzle 71 and the fixed shade 73 may be coupled to
a housing 75. They may be coupled to the body 11 of the ship using
welding, etc.
[0117] The second nozzle 72 may be adjacent to the second impeller.
The second nozzle 72 may be adjacent to a narrow opening of the
second impeller. In more detail, the second nozzle 72 may be
adjacent to the second reflection shade 37. The centrifugal
propulsion apparatus 30 may be provided between the second nozzle
72 and the installation plate 25 and may further include a nozzle
fixing plate 74 coupled to the second nozzle 72 and the
installation plate 25. Here, the shape of the second nozzle 72 may
be a cylindrical shape or a flare-out shape like a trumpet.
[0118] While the invention has been shown and described with
reference to certain exemplary embodiments thereof, it will be
understood by those skilled in the art that various changes in form
and details may be made therein without departing from the spirit
and scope of the invention as defined by the appended claims.
INDUSTRIAL AVAILABILITY
[0119] The present invention is for solving a number of problems
including the above-described problems and can provide a
centrifugal propulsion apparatus capable of forward and backward
movement and a ship having the same.
* * * * *