JPS6030626Y2 - heat exchange element - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a heat exchanger, and particularly to a finned heat exchange element.

An object of the present invention is to provide a heat exchange element with fins.

Another object of the present invention is to provide a heat exchange element having fins cut or chiseled from the wall of the tubular material of the heat exchange element.

Heat exchange elements having fins cut or chiseled from the wall of a tubular material are known, for example U.S. Pat.
21 years ago, 32297221 first prize.

The present invention provides a heat exchange element that has many advantages* compared to the known heat exchange elements mentioned above.

Another object of the invention is to provide a new heat exchange element having multiple fluid passages extending laterally outside the tube.

Another object of the present invention is to provide a heat exchange element having outwardly projecting fins, and to provide a heat exchange element with high stability at the outer edges of the fins.

A common drawback of known heat exchange elements having fins projecting outwardly from the tube is that they require external, separate support members because the fins are interlocked when the heat exchange elements are stacked on top of each other. It is in.

The present invention provides a heat exchange element that does not have this drawback.

Another object of the present invention is to have fins protruding outward from both side walls of the tube so that when the fins are brought into contact with each other and overlapped with another tube, the fins do not intersect with each other. It is there to provide structure.

Another object of the present invention is to provide a heat exchange element that has high rigidity and strength, can be easily manufactured at low cost, has great practicality, and has good heat exchange efficiency.

The invention comprises a tubular member of rectangular cross section having an elongated wall and a plurality of fins, each fin being longitudinally spaced apart from one another in the wall and projecting outwardly from the wall; In a heat exchange element having a base integral with the wall and extending in a direction transverse to the longitudinal direction of the wall,
The fins are disposed in oppositely spaced walls and have a curved shape with an outwardly facing surface terminating in a free end that closely abuts the curved portion of an adjacent fin, thus providing rigidity to the finned structure. Alternatively, a conduit is formed so that additional heat exchange elements can be combined in an abutting relationship with each other.

According to the present invention, the tips of the fins are brought into abutting contact with the curved surfaces of adjacent fins to support each other, which provides structural rigidity, strength, and stability to the entire fin structure, and the fins in use vibration of the fins is prevented, and damage to the fins is also prevented during cleaning with high-pressure fluid.

That is, the present invention is configured such that the free ends of the fins are in intimate abutting relationship with the substantially circular or elliptical curved surface of each adjacent fin to form a fluid passageway or conduit between the fins. It is distinctive in that it did so.

Such a structure has fin tips (free ends) abutting each other to form a substantially closed passage.

This results in the formation of a substantially enclosed conduit in the radiator, which conduit provides a through passage for a cooling medium, such as air.

Therefore, it becomes possible to reliably flow the cooling medium in a specific direction or within a specific conduit, making it easier to control cooling and increasing cooling efficiency.

Further, according to the structure of the present invention, a finned tube structure with high rigidity and strength can be obtained.

The heat exchange element of the present invention, that is, the heat exchanger (finned tube structure)
is installed in a power plant, for example, and for this purpose, the finned tube equipment according to the present invention has a length of 12
0 feet (approximately 36.6 m), the width of the stacked layer of pipe is 30
Because it is a large-scale project of ~50 feet (approximately 9.1 to 15.2 m), great rigidity and strength are required of the pipe.

Additionally, such equipment must be cleaned by spraying extremely high pressure cleaning fluid, or ice, onto the fins via hoses.

Therefore, when very large forces are applied to the fins by high pressure fluid, the fins of conventional construction may become misaligned or vibrate.

However, the mutually supported rigid structure of the fins of the present invention prevents misalignment and vibration due to the high pressure flow of cleaning liquid.

Further, in conventional finned tubes, when extremely high pressure fluid passes through the tube, it causes vibrations in the tube, which can cause the tube to rupture if the tube is long.

In the finned heat exchange element (finned tube) according to the present invention,
Because the tube is provided with greater rigidity without the need for external supports or support frames, there is no risk of vibration or bursting as described above.

DESCRIPTION OF THE DRAWINGS Illustrative embodiments are described with reference to the drawings to clarify objects and advantages of the invention.

1 and 2 show a heat exchange element or heat exchanger 1 according to a first embodiment of the present invention.

The heat exchanger 1 is formed by an elongated tubular member 2 and includes a number of fins extending outwardly from the outer surfaces of opposing walls 7, 8 of a side wall 3 surrounding an opening 4 and integral with the walls 7, 8. I have 5,6.

As will be explained in detail later, the heat exchanger 1 according to the present invention uses a tube 9 with a rectangular cross section shown by the dotted line in FIG. 2, and the initial length is from A to B in FIG. Fins 5 and 6 are formed on the upper and lower surfaces by a required length toward B, and when the required length A-C is reached, they are cut at C to form the heat exchanger 1 shown in FIG.

The tubes 9 from which the heat exchanger 1 is to be manufactured are made of the required material, such as argonium or copper, and have a plurality of outwardly projecting ribs 10 on the outer surface of the walls 7,8.

The ribs 10 extend parallel to each other over the entire length of the tube 9 in the longitudinal direction.

To manufacture the heat exchanger 1, a tube 9 having ribs 10 along its entire length is first manufactured.

Next, the ribs 10 of both wall portions 7, 8 are sequentially formed into fins 5, 6 from one end A shown in FIG.

Each fin 5, 6 has a rib 10 formed by cutting or chisel processing.
It is formed by cutting in the longitudinal direction of the rib 10 in the direction of the inclined surface 11 of the rib 10 shown by the dotted line in FIG.

The bases of the fins 5 and 6 are left firmly attached to the tube 9 without being cut off.

After each fin 5, 6 is machined from the rib 10 of the tube 9, the fins 5, 6 are bent outward to form a curved surface such as a part of a circle or an ellipse.

If necessary, the curved surfaces of the fins 5 and 6 can be formed simultaneously with the fin processing using a tool such as a chisel that cuts out the fins 5 and 6.

All fins 5 and 6 have a similar shape.

The bases of the fins 5, 6 cut out from the rib 10 are integral with the rest of the rib and extend transversely to the length of the tube 9.

The fins 5, 6 form a plurality of rows 13, 14 transversely across the walls 7, 8 along the length of the tube 9.

Row 13 of fins 5, 6 closest to the first end A of the tube 9.
After the fins 14 have been formed, the fins 5, 6 formed one after the other are bent towards the end A of the tube 9 so that the free end 15 abuts against the surface of the previously formed fins 5, 6.

This allows the two adjacent rows 13, 14 of fins 5, 6 to form tubular fluid passages or conduits 1 extending transversely to the tube 9.
form 8.

A heat exchange fluid, for example air, can be passed through the passage 18 transversely to the heat exchanger 1 .

In the heat exchanger 1 shown in FIGS. 1 and 2, the ribs 10 are spaced from each other and arranged in parallel, so the passage 18 is discontinuous in the area corresponding to the space between the ribs 10, forming a narrow passage 18 in the longitudinal direction. .

Since a longitudinal passage 19 is formed in addition to the passage 18 in the direction of the rows 13, 14 of the fins 5, 6, a turbulent flow effect is created in the airflow passing through the passage 18, and the heat transfer area of the fins 5, 6 becomes large. , the heat transfer of heat exchanger 1 becomes dog.

After cutting and forming the fins to a required length, for example, A-C in FIG. 2, the remaining portion B-C of the tube 9 is cut off, and the first
, a heat exchanger 1 shown by a solid line in FIG. 2 is obtained.

The heat exchangers 1 shown in FIGS. 1 and 2 can be easily stacked. For example, even if the fins 6 of another heat exchanger are stacked on top of the fins 5, the fins will not overlap.

Further, the outer end surfaces 17 of the surfaces 16 of the fins 5 and 6 can be easily fixed to a support member such as a plate, for example, by adhesion with epoxy resin, brazing, soldering, or the like.

As mentioned above, the shape of the fins 5 and 6 is a smooth curved surface, for example, a part of a circle or an ellipse.

Furthermore, the free ends 15 of the fins 5,6 are oriented downwardly and inwardly toward the center of the tubular member 2, and the surfaces 16 of the adjacent fins 5,6
contact with.

With this configuration, after the required number of fins 5, 6 are formed, the free ends of the fins are supported by the adjacent fins, so that the fins are supported so that they do not deform even if an external force is applied over the entire length of the fins.

In the heat exchanger shown in FIGS. 1 and 2, the free ends 15 of the fins 5.6 contact the surfaces 16 of the adjacent fins.

The free ends 15 of the fins 5, 6 and the surface 15 of the adjacent fin can also be spaced apart slightly.

It is also possible to securely bond between the free ends 15 of the fins 5, 6 and the surface 16 of the adjacent fin by soldering or the like.

Even without bonding, it still provides the necessary support for most applications.

Another embodiment of the invention is shown in FIG.

Similar parts are designated by the same reference numerals, and parts that are modified from the embodiment of FIG. 3 are designated by the suffix a.

The changes in the embodiment shown in FIG. 3 compared to the embodiments shown in FIGS. 1 and 2 are as follows.

The tubular member 2a of the heat exchange element 1a does not have a plurality of longitudinal ribs.

The fins 5a and 6a extend horizontally on the outer surfaces of the opposing side walls 7ay8a.

The tubular material for manufacturing the heat exchange element 1 shown in FIGS. 1 and 2 does not have ribs 10 and has a side wall portion. The initial thickness of a, 8a is the same as that in FIG. 1.2, and a material with a smooth outer surface is used as the material for the heat exchange element 1a in FIG.

The method for forming the fins 5a and 6a is the same as that for the fins 5 and 6.

That is, the fins 5a*6a are cut from the above-mentioned tubular material using a required cutting tool or cut out using a chisel.

However, when forming the fins 5a and 6a, instead of cutting them out from a plurality of parallel ribs, they are cut out from the side walls of a tubular material. a, 8
Each fin 5a, 6a has a length equal to the entire thickness of the tubular member 2a since it is cut from the smooth surface of the tubular member 2a.

Fin 5a. The curved surface of the fins 6a is the same as that of the fins 5 and 6, and the relative arrangement of the adjacent fins 5a and 6a is also the same as that of the fins 5 and 6.

As shown in FIG. 3, the free ends 15 of the fins 5a, 6a substantially contact the curved portions of adjacent fins, forming a passage 18a of length equal to the crest of the tubular member.

Similar to the heat exchange element 1 shown in FIGS. 1 and 2, the heat exchange element 1a shown in FIG. The fins of the heat exchange elements do not intersect with each other.

The portion 17 that contacts the circumferential surfaces of the fins 5a and 6a can be used as a support when the heat exchange elements 1a are stacked on top of each other.
Or other support plates etc. can be attached.

As mentioned above, the present invention provides a novel finned heat exchange element that is easy to manufacture, efficient in use, and easy to assemble.

The present invention can be modified in various ways, and the embodiments and drawings are illustrative and do not limit the invention.

[Brief explanation of the drawing]

1 is a partial perspective view of a heat exchange element according to the present invention, FIG. 2 is a side view of the heat exchange element of FIG. 1, and FIG. 3 is a partial perspective view of the embodiment of FIG. 2. 1.1a...Heat exchange element, 2,2a...Curved tubular member, 4...Opening, 5, 6, 5a, 6a, curved fin, 7t 8t 7at 8at... ... Opposite wall part, 9 ... Pipe, 10 ... Rib, 1
1... Curved inclined surface, 15... Curved end, 16...
Curved surface, 17... Circumscribed part, 18° 18a...
... Tubular fluid passage, 19... Curved longitudinal passage.

Claims (1)

[Scope of utility model registration request] a tubular member of rectangular cross-section having an elongated wall and a plurality of fins, each fin being longitudinally spaced from one another in the wall and projecting outwardly from the wall, the fins being integral with the wall; In such a heat exchange element having a base of and extending transversely to the longitudinal direction of said walls, said fins are arranged on oppositely spaced walls 7, 8 and curved portions 16 of adjacent fins 5.6. having a curved shape with an outward facing surface 17 terminating in a free end 15 in close abutment, thus providing rigidity to the finned structure, forming a passageway or conduit 18 to allow additional heat exchange elements to abut each other. A heat exchange element characterized in that it can be combined in a matching relationship.