U.S. patent application number 13/677757 was filed with the patent office on 2014-05-15 for heat exchanger pipe and manufacturing method therefor.
The applicant listed for this patent is Sung-hwan CHOI. Invention is credited to Sung-hwan CHOI.
Application Number | 20140131021 13/677757 |
Document ID | / |
Family ID | 50680551 |
Filed Date | 2014-05-15 |
United States Patent
Application |
20140131021 |
Kind Code |
A1 |
CHOI; Sung-hwan |
May 15, 2014 |
HEAT EXCHANGER PIPE AND MANUFACTURING METHOD THEREFOR
Abstract
The present invention relates to a heat exchanger pipe, which
enables heat exchange between fluid flowing along the interior of
the pipe and fluid existing exterior of the pipe, and the
manufacturing method therefor, in particular, a heat exchanger pipe
and manufacturing method therefor such that enhances flow of fluid
within the pipe's interior, increases heat exchange rate by making
more contact, enhancing adherence property and sealing property
between the outer pipe and the insertion in the interior of said
outer pipe in the manufacturing process, and at the same time is
easy to manufacture.
Inventors: |
CHOI; Sung-hwan; (Seoul,
KR) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
CHOI; Sung-hwan |
Seoul |
|
KR |
|
|
Family ID: |
50680551 |
Appl. No.: |
13/677757 |
Filed: |
November 15, 2012 |
Current U.S.
Class: |
165/177 |
Current CPC
Class: |
F28F 2275/14 20130101;
B21C 37/225 20130101; F28F 1/40 20130101; F28F 2215/10 20130101;
F28F 2275/10 20130101; F28F 2255/16 20130101 |
Class at
Publication: |
165/177 |
International
Class: |
F28F 1/00 20060101
F28F001/00 |
Claims
1. A heat exchanger pipe wherein consists of a cylindrical outer
pipe, a primary half part shell and secondary half part shell such
that the outer surface is in contact with the inner surface of said
outer pipe, if each comprises of a semicylinder form, and they are
combined facing each other within the interior of said outer pipe,
and the primary rib and secondary rib arranged orthogonal to the
hypothetical boundary surface partitioning said primary half part
shell and secondary half part shell, extending from each inner
surface of said primary half part shell and secondary half part
shell towards the interior space, but with a multiple of said
primary rib, the length of said primary ribs are adjusted such that
an `S` shape is formulated when the terminals of said primary ribs
are connected by an imaginary line, a multiple of said secondary
rib, the length of said secondary ribs are adjusted such that an
`S` shape is formulated when the terminals of said secondary ribs
are connected by an imaginary line, and the terminals of said
primary rib and secondary rib are separated.
2. The heat exchanger pipe in claim 1, wherein a primary half part
insertion consisting of said primary half part shell and primary
rib and a secondary half part insertion consisting of said
secondary half part shell and secondary rib are identically shaped
through pressing out, but the cross section of said primary half
part insertion and secondary half part insertion are bilaterally
symmetrical.
3. The heat exchanger pipe in claim 2, wherein terminals of both
sides of said primary half part shell and terminals of both sides
of secondary half part shell are each shaped in flat form, but a
certain length from the terminal of said flat primary half part
shell includes a primary bend bent towards said outer pipe, a
certain length from the terminal of said flat secondary half part
shell includes a secondary bend bent towards said outer pipe, the
primary half part shell and secondary half part shell are inserted
facing each other in the interior of said outer pipe and
accordingly if pressure is applied on said outer pipe, said primary
bend and secondary bend are straightened, and the flat terminal of
said primary half part shell and the flat terminal of said
secondary half part shell are adhered and joined.
4. The heat exchanger pipe in claim 3, wherein multiple primary
bumps are formed on the cross section of said primary half part
shell, multiple secondary bumps are formed on the cross section of
said secondary half part shell, thus pressure is applied on said
outer pipe and when assembled said primary bumps and secondary
bumps adhere as they interlock.
5. The heat exchanger pipe in claim 1, wherein heat exchange
grooves are formed on the surface of said outer pipe to expand
surface area.
6. The heat exchanger pipe in claim 1, wherein In the portions of
both of the length-wise terminals of said primary half part shell
and secondary half part shell of said outer pipe, trap tongues,
each projected towards each interior, are formed to prevent said
primary half part shell and secondary half part shell from breaking
away from said outer pipe.
7. The heat exchanger pipe manufacturing method that manufactures a
heat exchanger pipe identical to that in claim 1, wherein consists
steps of: preparing an insertion such that said primary half part
shell and secondary half part shell are placed erect on top of a
upper portion table identical to the diameter of said primary half
part shell and secondary half part shell combined facing each
other, preparing an outer pipe that enables placing said outer pipe
erect on top of a lower portion table, such that supports the lower
part of said upper portion table but has a larger diameter than
said upper portion table, such that said primary half part shell
and secondary half part shell are placed within the interior of
said outer pipe, preparing to apply pressure to place the dies
mold, such that is equipped with a taper component in the interior
of the lower side and a pressure applying component in the interior
of the upper side of said taper component, the diameter of the
lower part of said taper component identical to the external
diameter of said outer pipe, the diameter of said pressure applying
component identical to the external diameter of said primary half
part shell and secondary half part shell combined, on the upper
side of said outer pipe, in a condition such that said dies mold is
descended until the outer pipe is inserted in the interior of said
dies mold, a pressure application step in which said dies mold is
pushed down to apply pressure on the outer pipe with said pressure
applying component so that the inner surface of said outer pipe is
adhered to the outer surface of said primary half part shell and
secondary half part shell.
8. The heat exchanger pipe manufacturing method that manufactures a
heat exchanger pipe identical to that in claim 2, wherein consists
steps of: preparing an insertion such that said primary half part
shell and secondary half part shell are placed erect on top of a
upper portion table identical to the diameter of said primary half
part shell and secondary half part shell combined facing each
other, preparing an outer pipe that enables placing said outer pipe
erect on top of a lower portion table, such that supports the lower
part of said upper portion table but has a larger diameter than
said upper portion table, such that said primary half part shell
and secondary half part shell are placed within the interior of
said outer pipe, preparing to apply pressure to place the dies
mold, such that is equipped with a taper component in the interior
of the lower side and a pressure applying component in the interior
of the upper side of said taper component, the diameter of the
lower part of said taper component identical to the external
diameter of said outer pipe, the diameter of said pressure applying
component identical to the external diameter of said primary half
part shell and secondary half part shell combined, on the upper
side of said outer pipe, in a condition such that said dies mold is
descended until the outer pipe is inserted in the interior of said
dies mold, a pressure application step in which said dies mold is
pushed down to apply pressure on the outer pipe with said pressure
applying component so that the inner surface of said outer pipe is
adhered to the outer surface of said primary half part shell and
secondary half part shell.
9. The heat exchanger pipe manufacturing method that manufactures a
heat exchanger pipe identical to that in claim 3, wherein consists
steps of: preparing an insertion such that said primary half part
shell and secondary half part shell are placed erect on top of a
upper portion table identical to the diameter of said primary half
part shell and secondary half part shell combined facing each
other, preparing an outer pipe that enables placing said outer pipe
erect on top of a lower portion table, such that supports the lower
part of said upper portion table but has a larger diameter than
said upper portion table, such that said primary half part shell
and secondary half part shell are placed within the interior of
said outer pipe, preparing to apply pressure to place the dies
mold, such that is equipped with a taper component in the interior
of the lower side and a pressure applying component in the interior
of the upper side of said taper component, the diameter of the
lower part of said taper component identical to the external
diameter of said outer pipe, the diameter of said pressure applying
component identical to the external diameter of said primary half
part shell and secondary half part shell combined, on the upper
side of said outer pipe, in a condition such that said dies mold is
descended until the outer pipe is inserted in the interior of said
dies mold, a pressure application step in which said dies mold is
pushed down to apply pressure on the outer pipe with said pressure
applying component so that the inner surface of said outer pipe is
adhered to the outer surface of said primary half part shell and
secondary half part shell.
10. The heat exchanger pipe manufacturing method that manufactures
a heat exchanger pipe identical to that in claim 4, wherein
consists steps of: preparing an insertion such that said primary
half part shell and secondary half part shell are placed erect on
top of a upper portion table identical to the diameter of said
primary half part shell and secondary half part shell combined
facing each other, preparing an outer pipe that enables placing
said outer pipe erect on top of a lower portion table, such that
supports the lower part of said upper portion table but has a
larger diameter than said upper portion table, such that said
primary half part shell and secondary half part shell are placed
within the interior of said outer pipe, preparing to apply pressure
to place the dies mold, such that is equipped with a taper
component in the interior of the lower side and a pressure applying
component in the interior of the upper side of said taper
component, the diameter of the lower part of said taper component
identical to the external diameter of said outer pipe, the diameter
of said pressure applying component identical to the external
diameter of said primary half part shell and secondary half part
shell combined, on the upper side of said outer pipe, in a
condition such that said dies mold is descended until the outer
pipe is inserted in the interior of said dies mold, a pressure
application step in which said dies mold is pushed down to apply
pressure on the outer pipe with said pressure applying component so
that the inner surface of said outer pipe is adhered to the outer
surface of said primary half part shell and secondary half part
shell.
11. The heat exchanger pipe manufacturing method that manufactures
a heat exchanger pipe identical to that in claim 5, wherein
consists steps of: preparing an insertion such that said primary
half part shell and secondary half part shell are placed erect on
top of a upper portion table identical to the diameter of said
primary half part shell and secondary half part shell combined
facing each other, preparing an outer pipe that enables placing
said outer pipe erect on top of a lower portion table, such that
supports the lower part of said upper portion table but has a
larger diameter than said upper portion table, such that said
primary half part shell and secondary half part shell are placed
within the interior of said outer pipe, preparing to apply pressure
to place the dies mold, such that is equipped with a taper
component in the interior of the lower side and a pressure applying
component in the interior of the upper side of said taper
component, the diameter of the lower part of said taper component
identical to the external diameter of said outer pipe, the diameter
of said pressure applying component identical to the external
diameter of said primary half part shell and secondary half part
shell combined, on the upper side of said outer pipe, in a
condition such that said dies mold is descended until the outer
pipe is inserted in the interior of said dies mold, a pressure
application step in which said dies mold is pushed down to apply
pressure on the outer pipe with said pressure applying component so
that the inner surface of said outer pipe is adhered to the outer
surface of said primary half part shell and secondary half part
shell.
12. The heat exchanger pipe manufacturing method that manufactures
a heat exchanger pipe identical to that in claim 6, wherein
consists steps of: preparing an insertion such that said primary
half part shell and secondary half part shell are placed erect on
top of a upper portion table identical to the diameter of said
primary half part shell and secondary half part shell combined
facing each other, preparing an outer pipe that enables placing
said outer pipe erect on top of a lower portion table, such that
supports the lower part of said upper portion table but has a
larger diameter than said upper portion table, such that said
primary half part shell and secondary half part shell are placed
within the interior of said outer pipe, preparing to apply pressure
to place the dies mold, such that is equipped with a taper
component in the interior of the lower side and a pressure applying
component in the interior of the upper side of said taper
component, the diameter of the lower part of said taper component
identical to the external diameter of said outer pipe, the diameter
of said pressure applying component identical to the external
diameter of said primary half part shell and secondary half part
shell combined, on the upper side of said outer pipe, in a
condition such that said dies mold is descended until the outer
pipe is inserted in the interior of said dies mold, a pressure
application step in which said dies mold is pushed down to apply
pressure on the outer pipe with said pressure applying component so
that the inner surface of said outer pipe is adhered to the outer
surface of said primary half part shell and secondary half part
shell.
Description
BACKGROUND OF THE INVENTION
[0001] 1. Field of the Invention
[0002] The present invention relates to a heat exchanger pipe,
which enables heat exchange between fluid flowing along the
interior of the pipe and fluid existing exterior of the pipe, and
the manufacturing method therefor, in particular, a heat exchanger
pipe and manufacturing method therefor such that enhances flow of
fluid within the pipe's interior, increases heat exchange rate by
making more contact, enhancing adherence property and sealing
property between the outer pipe and the insertion in the interior
of said outer pipe in the manufacturing process, and at the same
time is easy to manufacture.
[0003] 2. Description of the Related Art
[0004] Heat exchanger pipes, used in air conditioning and heating
systems such as boilers, heat pumps, and air conditioners, are used
to provide not only hot water or heated water, but also heat and
cold by enabling heat exchange between fluid that flowing along the
interior of the pipe and fluid existing exterior of the pipe.
[0005] Fluid flowing along the interior of the pipe is typically a
gas such as hot combustion gas, and the fluid existing exterior of
the pipe being a liquid such as direct water, the hot combustion
gas typically provides hot water or heated water by exchanging heat
with the direct water while flowing within the heat exchanger pipe,
but there is no special limitation on each of the fluids, either
liquid or gas, in the interior and exterior of the pipe.
[0006] Meanwhile, as shown in FIG. 1 Korean Registered Patent No.
10-217265 discloses a heat exchanger tube for heating boilers,
including a cylindrical exterior tube 1 and a pair of half part
shells 3 and 4 installed within said exterior tube 1, thus in
contact with the exterior tube 1.
[0007] Also, the surface area is expanded by arranging multiple
ribs 5 within the half part shells 3 and 4 like a comb, and the
longitudinal contact edges of the half part shells 3 and 4 each
form interlocking groove type recess 7 and rib type tongue 8 in
attempt to improve sealing.
[0008] However, a heat exchanger tube as described above (i.e.,
heat exchanger pipe) is problematic in that their lengths are each
adjusted so that the terminal of each of the ribs 5 are aligned(in
line) and the flow of the interior fluid is minor, thus the heat
contact amount between the fluid, the source of heat, and ribs 5 is
insufficient.
[0009] Also, the exterior tube 1 and half part shells 3 and 4 are
assembled through a adhering method of applying pressure evenly to
the entire outer surface of said exterior tube 1, and the actual
applied force Fr herein is applied orthogonal to each outer surface
in the exterior tube 1, while the force Fn needed to forcefully
adhere the groove type recess 7 and rib type tongue 8 is not
identical in direction to said actual applied force, thus it is
problematic that a gap is formed between the groove type recess 7
and rib type tongue 8.
SUMMARY OF THE INVENTION
[0010] In the present invention proposed in order to resolve the
problems stated above are, in accomplishing heat exchange between
fluid flowing along the interior of the pipe and fluid existing
exterior of the pipe, a heat exchanger pipe and manufacturing
method therefor such that enhances flow of fluid within the pipe's
interior, increases heat exchange rate by making more contact,
enhancing adherence property and sealing property between the outer
pipe and the insertion in the interior of said outer pipe in the
manufacturing process, and at the same time is easy to
manufacture.
[0011] In order to achieve this, the heat exchanger pipe according
to the present invention consists of a cylindrical outer pipe, a
primary half part shell and secondary half part shell such that the
outer surface is in contact with the inner surface of said outer
pipe, if each comprises of a half-cylindrical form, and they are
combined facing each other within the interior of said outer pipe,
and the primary rib and secondary rib arranged orthogonal to the
hypothetical boundary surface partitioning said primary half part
shell and secondary half part shell, extending from each inner
surface of said primary half part shell and secondary half part
shell towards the interior space, but with a multiple of said
primary rib, the length of said primary ribs are adjusted such that
an `S` shape is formulated when the terminals of said primary ribs
are connected by an imaginary line, a multiple of said secondary
rib, the length of said secondary ribs are adjusted such that an
`S` shape is formulated when the terminals of said secondary ribs
are connected by an imaginary line, and the terminals of said
primary rib and secondary rib are separated.
[0012] In this case, preferably a primary half part insertion
consisting of said primary half part shell and primary rib and a
secondary half part insertion consisting of said secondary half
part shell and secondary rib are identically shaped through
pressing out, but the cross section of said primary half part
insertion and secondary half part insertion are bilaterally
symmetrical.
[0013] Also, preferably terminals of both sides of said primary
half part shell and terminals of both sides of secondary half part
shell are each shaped in flat form, but a certain length from the
terminal of said flat primary half part shell includes a primary
bend bent towards said outer pipe, a certain length from the
terminal of said flat secondary half part shell includes a
secondary bend bent towards said outer pipe, the primary half part
shell and secondary half part shell are inserted facing each other
in the interior of said outer pipe and accordingly if pressure is
applied on said outer pipe, said primary bend and secondary bend
are straightened, and the flat terminal of said primary half part
shell and the flat terminal of said secondary half part shell are
adhered and joined.
[0014] Also, preferably multiple primary bumps are formed on the
cross section of said primary half part shell, multiple secondary
bumps are formed on the cross section of said secondary half part
shell, thus pressure is applied on said outer pipe and when
assembled said primary bumps and secondary bumps adhere as they
interlock.
[0015] Also, preferably heat exchange grooves are formed on the
surface of said outer pipe to expand surface area.
[0016] Also, preferably in the portions of both of the lengthwise
terminals of said primary half part shell and secondary half part
shell of said outer pipe, trap tongues, each projected towards each
interior, are formed to prevent said primary half part shell and
secondary half part shell from breaking away from said outer
pipe.
[0017] Meanwhile, the heat exchanger pipe manufacturing method
according to the present invention consists steps of preparing an
insertion such that said primary half part shell and secondary half
part shell are placed erect on top of a upper portion table
identical to the diameter of said primary half part shell and
secondary half part shell combined facing each other, preparing an
outer pipe that enables placing said outer pipe erect on top of a
lower portion table, such that supports the lower part of said
upper portion table but has a larger diameter than said upper
portion table, such that said primary half part shell and secondary
half part shell are placed within the interior of said outer pipe,
preparing to apply pressure to place the dies mold, such that is
equipped with a taper component in the interior of the lower side
and a pressure applying component in the interior of the upper side
of said taper component, the diameter of the lower part of said
taper component identical to the external diameter of said outer
pipe, the diameter of said pressure applying component identical to
the external diameter of said primary half part shell and secondary
half part shell combined, on the upper side of said outer pipe, in
a condition such that said dies mold is descended until the outer
pipe is inserted in the interior of said dies mold, pushing down
said dies mold to apply pressure on the outer pipe with said
pressure applying component so that the inner surface of said outer
pipe is adhered to the outer surface of said primary half part
shell and secondary half part shell.
[0018] According to the heat exchanger pipe of the present
invention described above, since the length of each rib is adjusted
such that the terminals of the ribs equipped in each the primary
half part shell and secondary half part shell to form an `S` shape,
the flow of fluid flowing within the interior of the pipe is
further enhanced and more contact is made to increase heat exchange
rate.
[0019] Also, according to the heat exchanger pipe manufacturing
method in the present invention, by having a bend that bends
identical in direction with the actual applied force when pressure
is applied to the outer pipe, adherence property and sealing
property between the outer pipe and the insertion in the interior
of said outer pipe in the manufacturing process are enhanced, and
at the same time manufacturing is made easy since adhesion of the
outer pipe and insertion is achieved simply by inserting and
pushing the dies mold.
BRIEF DESCRIPTION OF THE DRAWINGS
[0020] FIG. 1 is a cross-sectional diagram displaying a heat
exchanger pipe(heat exchange tube) according to prior art;
[0021] FIG. 2 is a perspective view displaying a heat exchanger
pipe according to the first embodiment of the present
invention;
[0022] FIG. 3 is a cross-sectional diagram displaying a heat
exchanger pipe according to the first embodiment of the present
invention;
[0023] FIG. 4 is a cross-sectional diagram displaying a heat
exchanger pipe according to the second embodiment of the present
invention;
[0024] FIG. 5 is a partial cross-sectional diagram displaying a
heat exchanger pipe according to the third embodiment of the
present invention;
[0025] FIG. 6 is a partial cross-sectional diagram displaying a
heat exchanger pipe according to the fourth embodiment of the
present invention;
[0026] FIG. 7 is a perspective view displaying a heat exchanger
pipe according to the fifth embodiment of the present
invention;
[0027] FIG. 8 is a perspective view displaying a heat exchanger
pipe according to the sixth embodiment of the present
invention;
[0028] FIG. 9 is a diagram showing the heat exchanger pipe
manufacturing method according to the embodiments of the present
invention;
DETAILED DESCRIPTION OF THE INVENTION
[0029] Hereinafter, with reference to the attached drawings,
preferable embodiments of the trap apparatus for heat exchanger
pipe and manufacturing method therefor will be described in
detail.
[0030] First, the heat exchanger pipe 20 according to the first
embodiment of the present invention, as in the perspective view of
FIG. 2 and the cross-sectional diagram of FIG. 3, includes a
cylinder shaped outer pipe 21, and a primary half part insertion
22, 23 and secondary half part insertion 24, 25 inserted in the
interior or said outer pipe 21. For example the outer pipe 21 is
made of metal such as steel, and the primary half part insertion
22, 23 and secondary half part insertion 24, 25 are made of
aluminum.
[0031] In this case, the primary half part insertion 22, 23
consists of a primary half part shell 22 in semicylinder form, the
cylinder cut along its length, and multiple primary ribs 23 on said
primary half part shell 22. Similarly, the secondary half part
insertion 24, 25 consists of a secondary half part shell 24 and
multiple secondary ribs 25.
[0032] Also, the terminal F of the primary half part shell 22 and
the terminal F' of the secondary half part shell 24 each consist of
flat sides, so that when the terminals of the primary half part
shell 22 and secondary half part shell 24 which are arranged to
face each other are tightly assembled through adhesion, leakage of
the fluid flowing along the interior of the primary half part shell
22 and secondary half part shell 24 part shell 22 through the gap
between the secondary half part shell 24 is prevented.
[0033] Also, the primary ribs 23, installed at regular intervals,
extend from the inner surface of the primary half part shell 22
towards the interior space, and the secondary ribs 25, installed at
regular intervals, extend from the inner surface of the secondary
half part shell 24 towards the interior space, both the primary
ribs 23 and secondary ribs 25 arranged orthogonal to the
hypothetical boundary surface partitioning said primary half part
shell 22 and secondary half part shell 24.
[0034] In particular, in the present invention the length of said
primary ribs 23 and secondary ribs 25 are each adjusted such that
an `S` shape is formulated when the terminals of each are connected
by an imaginary line, and the terminals of the primary ribs 23 and
secondary ribs 25 that face each other above and below are
separated from contact.
[0035] For example, according to the figure, the primary ribs 23
are sequentially places the 1.sup.st primary rib 23a to the
6.sup.th primary rib 23f starting from the left, wherein the
2.sup.nd secondary rib 25b is longer than the 1.sup.st primary rib
23a, and the 3.sup.rd primary rib 23c is shorter than the 2.sup.nd
primary rib 23b.
[0036] Also, the lengths are adjusted such that the 4.sup.th
primary rib 23d is longer than the 3.sup.rd primary rib 23c, the
5.sup.th primary rib 23e is shorter than the 4.sup.th primary rib
23d, the 6.sup.th primary rib 23f is shorter than the 5.sup.th
primary rib 23e.
[0037] Therefore, when the terminals of the 1.sup.st primary rib
23a to 6.sup.th primary rib 23f are connected by an imaginary line,
an overlap of two `S` shapes(as shown by a dotted line in FIG. 3)
is formed.
[0038] Like the primary ribs 23, the secondary ribs 25 also consist
of six ribs, formulates an overlap of two `S` shapes when the
terminals of the 1.sup.st to 6.sup.th secondary ribs 25 are
connected by an imaginary line, and these primary ribs 23 and
secondary ribs 25 are separated from contact.
[0039] Accordingly, conventionally the terminals of each rib(refer
to 5 in FIG. 1) of the heat exchanger tube were aligned(in line) to
formulate a comb shape and the flow of interior fluid was minor,
but the present invention further includes an `S` shaped flow
component, thereby the fluid flowing along the interior side of the
primary half part shell 22 and secondary half part shell 24 further
fluctuates to increase the amount of heat contact among said fluid
and the primary and secondary ribs 23 and 25.
[0040] Also, the amount of heat contact increases as there is more
contact between a heat source fluid such as hot combustion gas and
the primary and secondary ribs 23 and 25, and heat delivery to the
outer pipe 21 in contact with the primary half part shell 22 and
secondary half part shell 24 increases, thus heat exchange with for
example, direct water exterior of the outer pipe 21 is made more
efficient.
[0041] Yet, the primary half part insertion 22, 23 is formed by
pressing out the primary half part shell 22 and primary rib 23
together, the secondary half part insertion 24, 25 is formed by
pressing out the secondary half part shell 24 and secondary rib 25
together, and if the primary half part insertion 22, 23 and
secondary half part insertion 24, 25 use the same formation cast,
the cost of manufacturing can be minimized.
[0042] Of course, in this case the primary half part insertion 22,
23 and secondary half part insertion 24, 25 must be assembled such
that their sides are bilaterally symmetrical.
[0043] Hereinafter, the heat exchanger pipe according to the second
embodiment of the present invention is described with reference to
the attached figures.
[0044] As shown in FIG. 4, the heat exchanger pipe 30 following the
second embodiment of the present invention consists of a cylinder
shaped outer pipe 31 and the primary half part insertion 32, 33 and
secondary half part insertion 34, 35 inserted within the interior
of said outer pipe 31.
[0045] In this case, the primary half part insertion 32, 33
consists of the primary half part shell 32 and multible primary
ribs 33, the secondary half part insertion 34, 35 consists of the
secondary half part shell 34 and multiple secondary ribs 35. This
point is equivalent to the first embodiment of the present
invention explained above.
[0046] However, the heat exchanger pipe according to the second
embodiment of the present invention consists of the primary ribs
33, sequentially placing the 1.sup.st primary rib 23 to the
5.sup.th primary rib 23 starting from the left of the figure, and
the secondary ribs 35, also consisting of five ribs, such that an
`S` shape is formed when the terminals of the five primary ribs 33
are sequentially connected, and the same for the secondary ribs
25.
[0047] In other words, the first embodiment as explained through
FIG. 3, consists of six ribs(refer to 23, 25 of FIG. 3), while the
second embodiment of the present invention consists of five ribs
33, 35, thereby the change in number of ribs can somewhat change
the `S` shape, but the invention allows increasing the heat
exchange rate by increasing fluid flow even in this case.
[0048] Hereinafter, referring to the attached figures the heat
exchanger according to the third embodiment of the present
invention is explained.
[0049] Yet, the third embodiment of the present invention is based
on the first embodiment, thus the differences are mainly shown and
explained.
[0050] As shown in (a) and (b) of FIG. 5, the heat exchanger pipe
according to the third embodiment of the present invention includes
the primary half part insertion 22, 23 and secondary half part
insertion 24, 25 inserted in the interior of the cylinder shaped
outer pipe(refer to 21 of FIG. 2), the primary half part insertion
22, 23 consisting of the primary half part shell 22 and multiple
primary ribs 23, the secondary half part insertion 24, 25
consisting of the secondary half part shell 24 and multiple
secondary ribs 25. This point is identical to the primary
embodiment of the present invention explained above.
[0051] However, the third embodiment of the present invention
includes the primary bend 22a and secondary bend 24a, used when
assembling both terminals of the primary half part shell 22 and
both terminals of the secondary half part shell 24, the primary
bend 22a and secondary bend 24a are distinguishable by observing
each bending outward based on each the primary bent side 22a' and
secondary bent side 24a'.
[0052] In other words, both terminals of the primary half part
shell 22 and both terminals of the secondary half part shell 24
each consist of flat forms, herein a certain length from the
terminal of the flat primary half part shell 22 as in (a) of FIG. 5
includes a primary bend bent 22a towards the outer pipe 31, and a
certain length from the terminal of the flat secondary half part
shell 24 includes a secondary bend 24a bent towards said outer pipe
31.
[0053] Thus, as (b) of FIG. 5, when pressure is applied during
assembling, in the process such that the outer pipe 21 is
compressed and adhered to the outer surface of the primary half
part shell 22 and secondary half part shell 24, the primary bend
22a and secondary bend 24a are pressed and spread to the inner
side, and the flat terminal of the primary half part shell 22 and
the flat terminal of the secondary half part shell 24 are slightly
oppressed and transformed and eventually tightly assembled together
through adhesion.
[0054] Therefore, conventionally the force actually applied during
assembly(refer to `Fr` of FIG. 1) is applied orthogonal to the
outer surface of each exterior tube 1, while the force(refer to
`Fn` of FIG. 1) needed to tightly adhere the groove type recess 7
and rib type tongue 8 is not identical in direction to the actual
applied force, thus the problem regarding the gap formed between
the groove type recess 7 and rib type tongue 8 is resolved.
[0055] In addition, as the fourth embodiment of the present
invention shown in FIG. 6, if multiple primary bumps 22b are formed
on the flat side of the primary half part shell 22 and multiple
secondary bumps(not shown) are formed on the flat side of the
secondary half part shell 24, pressure can be applied evenly on the
outer pipe 21 as above and when assembled said primary bumps 22b
and secondary bumps adhere better as they interlock.
[0056] Of course, if slight incision grooves 22c are made in each
bent sides of the primary bend 22a and secondary bend 24a, when the
outer pipe 21 is assembled by equally applying pressure on the
entire pipe, the direction the primary bend 22a and secondary bend
24a are straightened is directed, thus can be assembled easily.
[0057] Hereinafter, referring to the attached figures, the heat
exchanger according to the fifth embodiment is explained.
[0058] As shown in FIG. 7, the heat exchanger pipe according to the
fifth embodiment of the present invention includes an outer pipe 41
and an insertion 42, as described above, which consists of a
primary half part insertion and secondary half part insertion. This
point is equivalent to explanations above.
[0059] However, in the fifth embodiment of the present invention a
heat exchange groove 41a is formed on the surface of the outer pipe
41 in order to expand surface area, thus heat of the fluid (i.e.,
hot combustion gas etc.) flowing within the interior of the outer
pipe 41 can be more efficiently transferred to the fluid(i.e.,
direct water etc.) filling the exterior of the outer pipe 41.
[0060] Yet, FIG. 7 exemplifies the formation of multiple of the
linear shaped heat exchange grooves formed along the length of the
outer pipe 41 around the outer pipe 41 along the circumference, but
forming multiple of them along the circumference of the outer pipe
41 or along the length of the circular heat exchange groove with
regular intervals and forming heat exchange grooves on the outer
surface of the outer pipe 41 along various patterns such as a
spiral helix are also possible.
[0061] Hereinafter, the heat exchanger pipe according to the sixth
embodiment of the present invention is explained in reference to
the attached figures.
[0062] As shown in FIG. 8, the heat exchanger pipe 50 according to
the sixth embodiment of the present invention includes an outer
pipe 51 and an insertion 52, as described above, which consists of
a primary half part insertion and secondary half part
insertion.
[0063] In particular, a trap tongue 51a projecting towards the
inner side on which said insertion 52 is inserted is formed at both
terminals of the outer pipe 51, and the trap tongues 51a are formed
on both length-wise terminals of the insertion 52 in the outer pipe
51.
[0064] Therefore, since the insertion 52 is sturdily fixed without
moving towards the terminal of one side or the other of the outer
pipe 51, by applying pressure to the entire outer pipe the
concerned insertion 52 is prevented from breaking away from the
outer pip 51 after the inner surface of the outer pipe 51 and the
outer surface of the insertion 52 are assembled to be in
contact.
[0065] Hereinafter, the manufacturing method of the heat exchanger
pipe as in the embodiments of the present invention above is
explained. Yet, as an example, the manufacturing method of a heat
exchanger pipe according to the first embodiment of the present
invention explained with reference to FIG. 2 will be explained
hereinafter.
[0066] First, as shown in (a) of FIG. 9, tables T, T' are prepared
for the manufacture of heat exchangers according to the present
invention. Tables T, T' consist of a lower portion table T and an
upper portion table T' fixed on top of said lower portion table
T.
[0067] The upper portion table T' is of size identical to the
diameter of the primary half part shell 22 and secondary half part
shell 24 assembled to each other, thus the primary half part shell
22 and secondary half part shell 24 can be stably put on top, and
the lower portion table T has a bigger diameter than the upper
portion table T', so the outer pipe 21 can be put.
[0068] Next, as (b) of FIG. 9, the primary half part shell 22 and
secondary half part shell 24 assembled facing each other is put
erect on top of the upper portion table T'. In other words, the
primary half part insertion 22, 23 and secondary half part
insertion 24, 25 are prepared(insertion preparation step).
[0069] Next, as (c) of FIG. 9, the outer pipe 21' of the prototype
is put erect on top of the lower portion table so that the primary
half part shell 22 secondary half part shell 24 are put within the
inner side of the outer pipe 21' (outer pipe preparation step). The
unprocessed outer pipe 21' of the prototype has a diameter bigger
than the diameter of the assembled primary half part shell 22 and
secondary half part shell 24 put together, thus can be inserted
through the upper part of the primary half part shell 22 and
secondary half part shell 24.
[0070] Next, as D of FIG. 9, the interior of the inner side is
furnished with a taper component, which narrows down in width
towards the upper side, the upper side of said taper component is
equipped with a pressure applying component, the lower part
diameter of the taper component is identical(or, may be slightly
bigger) in diameter with the outer pipe 21, and the diameter of the
pressure applying component arranges a dies mold D, with diameter
equivalent to (or, may be slightly smaller) the diameter of the
primary half part shell 22 and secondary half part shell 24 put
together, at the upper side of the outer pipe 21(preparation step
to apply pressure).
[0071] Next, as (e) of FIG. 9, in a condition such that said dies
mold D is descended until the circular outer pipe 21' is inserted
in the interior of said dies mold D, pressure is applied so that
said dies mold D is pushed down to to apply pressure on the
circular outer pipe 21' with the pressure applying component, and
the inner surface of the outer pipe 21 such that the circular outer
pipe 21' is contracted is adhered to the outer surface of said
primary half part shell 22 and secondary half part shell 24, thus
manufacturing of the heat exchanger pipe is made convenient and
simple.
[0072] In conclusion, the embodiments of the present invention have
been described. However, those skilled in the art will appreciate
that the spirit and scope of the present invention are not limited
to the specific embodiments, but various modifications and
transformations are possible, without departing from the essence of
the invention.
[0073] Therefore, the described preferred embodiments are provided
to illustrate the scope of the invention to those skilled in the
art, are foreshadowing in all aspects and must be understood as not
being limiting. The scope of the present invention will be defined
in the accompanying claims.
* * * * *