RU2542628C2 - Methods of forming walls with increased surface for use in device - Google Patents

Abstract

FIELD: heating.

SUBSTANCE: invention relates to the field of heat engineering and can be used in the manufacture of heat exchangers. The method of forming walls with increased surface to perform a certain technological process comprises the following steps: providing the length of material having opposite initial surfaces, and the said material has a longitudinal axial line located substantially midway between the said surfaces, and each of the said initial surfaces has a density of the initial surface; the secondary patterns are pressed, having the densities of surfaces, in each of the said initial surfaces for deformation of the said material; and the primary patterns are pressed, having the densities of the primary pattern surfaces, in each of such deformed surfaces for additional deformation of the material and for additional increase in the densities of the surfaces on each of the said surfaces.

EFFECT: improvement of efficiency of the surface of the heat transfer.

18 cl, 80 dwg

Description

Cross reference to related application

[0001] This application is a partially ongoing pending application for US patent No. 12/754094, filed April 5, 2010, and also claims the priority of provisional application US No. 61/295653, filed January 15, 2010, full descriptions of which are incorporated herein by links.

FIELD OF THE INVENTION

[0002] The present invention relates generally to methods for forming walls with an enlarged surface for use in a device (eg, heat exchangers, fluid mixing devices, etc.) for performing a specific process, to the walls with an enlarged surface themselves, and to various devices including such walls with an enlarged surface.

State of the art

[0003] It is known to provide walls with an enlarged surface for use in heat exchangers and fluid mixing devices. Such walls usually have many elements pressed into them, to increase the surface area, to improve the mixing of fluids, to increase turbulence, to destroy the surface layer adjacent to this surface, to improve heat transfer, etc.

[0004] US 5,052,476 A discloses a heat exchanger tube having U-shaped primary grooves, V-shaped secondary grooves and pear-shaped tertiary grooves to increase turbulence and outflow efficiency. First, the tube is formed in the form of a plate, and then it is rolled into a tube, after which the proximal ends are welded together. The depth of the auxiliary grooves is considered equal to 50-100% of the depth of the primary grooves.

[0005] US 5,259,448 A discloses a heat exchanger tube having a rectangular-shaped main grooves and narrow auxiliary grooves that intersect the main grooves at an angle, the device is formed flat, rolled or corrugated and then welded. The depth of the narrow grooves is considered equal to 0.02 millimeters (mm). The depth of the main grooves is considered equal to 0.20-0.30 mm.

[0006] US 5,332,034 A discloses a heat exchanger tube having longitudinally extending circumferentially spaced ribs with parallel inclined recesses to increase turbulence and to improve heat transfer characteristics.

[0007] US 5,458,191 A discloses a heat exchanger tube having circumferentially spaced spirally wound ribs with parallel inclined recesses.

[0008] US 6,182,743 B1 discloses a heat exchange tube with multifaceted structures to improve heat transfer characteristics. Multifaceted structures can be applied to the inner and outer surfaces of the tube. This reference may disclose the use of ribs, plates, coatings and inserts to break the surface layer.

[0009] US 6,176,301 B1 discloses a heat exchange tube with polyhedral structures having fissure-like cavities on at least two surfaces of the polyhedra.

[0010] US 2005/0067156 A1 discloses a heat exchange tube that is obtained by cold or forging and which has wavy patterns of various shapes therein.

[0011] US 2005/0247380 A1 discloses a tin-brass alloy heat exchange tube for resistance to erosion by formic (ie, similar) acid.

[0012] US 2009/0008075 A1 discloses a heat exchange tube having polyhedron structures, the second structure being angled relative to the first.

[0013] US 5,351,397 A is the closest analogue and discloses a curved surface obtained by bubble boiling having a first pattern of grooves separated by ribs and a second pattern of less deep grooves formed in the ribs. The depth of the second pattern is considered equal to about 10-50% of the depth of the first pattern.

[0014] US 7,032,654 B2 discloses a heat exchanger having plates with enlarged surfaces and with holes in the plates.

[0015] US 4,663,243 A discloses a heat exchanger surface having an iron-based alloy obtained by hot spraying with enlarged surfaces.

[0016] Finally, US 4,753,849 discloses a porous-coated heat exchanger tube for improving heat transfer.

Disclosure of invention

[0017] Regarding an introductory reference to the corresponding parts, sections or surfaces of one or more of the disclosed embodiments, for purposes of illustration only, and not by way of limitation, the present invention generally provides: (1) improved methods of forming walls with an enlarged surface for use in a device (for example, heat exchangers, fluid mixing devices, etc.) to perform a specific process, (2) the walls themselves with an enlarged surface, and (3) various devices including such ki with enlarged surface.

[0018] In one aspect, the invention provides an improved method of forming a wall (20) with an enlarged surface for use in an apparatus for performing a specific process, comprising the steps of: providing a length of material (21) having opposite initial surfaces (21a, 21b) moreover, the material has a longitudinal center line (xx), located essentially in the middle of the distance between the original surfaces, the material has an initial transverse dimension, measured from the center line to points on one of the two original surfaces, located farthest from the centerline, each of the surfaces has an initial density of the original surface, the surface density is determined by the number of elements per unit surface area of the intended surface; press secondary patterns (23a, 23b) having surface densities of secondary patterns on each of the initial surfaces to deform the material and to increase surface densities on each surface and to increase the transverse size of the material from the center line to the farthest point of such a deformed material; and press the primary patterns (25a, 25b) having the surface densities of the primary patterns on each of such deformed surfaces to further deform the material and to further increase the surface densities on each of the surfaces; thereby providing walls with an enlarged surface for use in a device for performing a specific process.

[0019] Each surface density of the secondary pattern may be greater than each surface density of the primary pattern.

[0020] The step of pressing in the secondary patterns in each of the initial surfaces may include an additional step in which the material is deformed in a cold state.

[0021] The step of pressing in the primary patterns in each of the deformed surfaces may include an additional step in which the material is deformed in a cold state.

[0022] The secondary patterns may be the same.

[0023] The secondary patterns can be shifted relative to one another so that the maximum size from the center line to one deformed surface will correspond to the minimum size from the center line to the other deformed surface.

[0024] The step of pushing the secondary patterns into the material can increase the maximum transverse dimension of the material from the center line to the farthest point of the deformed material to 135% of the maximum transverse dimension from the center line to the farthest point on the original surface.

[0025] The step of pushing the secondary patterns into the material can increase the maximum transverse dimension of the material from the center line to the farthest point of the deformed material to 150% of the maximum transverse dimension from the center line to the farthest point on the original surface.

[0026] The step of pushing the secondary patterns into the material can increase the maximum transverse size of the material from the center line to the farthest point of the deformed material to 300% of the maximum transverse size from the center line to the farthest point on the original surface.

[0027] The step of pushing the secondary patterns into the material can increase the maximum transverse dimension of the material from the center line to the farthest point of the deformed material to 700% of the maximum transverse dimension from the center line to the farthest point on the original surface.

[0028] The step of pushing the secondary patterns into the material cannot reduce the minimum size of the material when measured from any point on one of such deformed surfaces to the nearest point on the opposite of one of such deformed surfaces below 95% of the minimum size from any point on one of the original surfaces to the nearest point on the opposite original surface.

[0029] The step of pressing secondary patterns into the material cannot reduce the minimum size of the material when measured from any point on one of such deformed surfaces to the nearest point on the opposite of one of such deformed surfaces below 50% of the minimum size from any point on one of the original surfaces to the nearest point on the opposite original surface.

[0030] The primary drawings may be the same.

[0031] The primary patterns can be shifted relative to one another so that the maximum size from the center line to one additionally deformed surface will correspond to the minimum size from the center line to another additionally deformed surface.

[0032] The step of pushing the primary patterns into the material cannot reduce the minimum size of the additionally deformed material when measured from the center line to any point on one of the two additionally deformed surfaces below 95% of the minimum size of the material when measured from the center line to one of the two original surfaces.

[0033] The step of pushing the primary patterns into the material cannot reduce the minimum size of the additionally deformed material when measured from the center line to any point on one of the two additionally deformed surfaces, below 50% of the minimum size of the material when measured from the center line to one of the two original surfaces .

[0034] The step of pushing the primary patterns into each of the surfaces may further increase the size from the center line to the outermost point of the additionally deformed material.

[0035] Opposite surfaces of the material may initially be flat.

[0036] The steps of indenting patterns may include the steps of indenting patterns using at least one of the hardening, stamping, rolling, pressing, and corrugating operations.

[0037] The method may further comprise additional steps in which: the wall is bent with an enlarged surface so that the proximal ends are proximal to each other; and join together the proximal ends of the material; thereby forming a tube with an enlarged surface.

[0038] The step of joining together the proximal ends of the material may include an additional step in which the proximal ends of the material are welded to join them together.

[0039] The method may further comprise an additional step of providing holes in the material.

[0040] The method may further comprise an additional step of installing a wall with an enlarged surface in the heat exchanger.

[0041] The method may further comprise an additional step of installing a wall with an enlarged surface in the fluid control device.

[0042] In another aspect, the invention provides a wall with an enlarged surface, manufactured by the method defined by any of the above steps.

[0043] The primary patterns may be directional or non-directional.

[0044] The secondary patterns may be directional or non-directional.

[0045] The wall may correspond to at least one of the following ASME / ASTM designations: A249 / A, A135, A370, A751, E213, E273, E309, E1806, A691, A139, A213, A214, A268, A269, A270, A312 , A334, A335, A498, A631, A671, A688, A691, A778, A299 / A, A789, A789 / A, A789 / M, A790, A803, A480, A763, A941, A1016, A1012, A1047 / A, A250 , A771, A826, A851, B674, E112, A370, A999, E381, E426, E527, E340, A409, A358, A262, A240, A537, A530, A435, A387, A299, A204, A20, A577, A578, A285 , E165, A380, A262 and A179. A general disclosure of each of these designations is hereby incorporated by reference.

[0046] The material may be homogeneous or heterogeneous.

[0047] The material may be coated on at least a portion of one of the original surfaces.

[0048] At least a portion of one of the original surfaces may be chemically treated.

[0049] In another aspect, the invention provides an improved heat exchange device that includes improved walls with an enlarged surface.

[0050] In another aspect, the invention provides an improved fluid control device that includes an improved wall with an enlarged surface.

[0051] In another aspect, the invention provides an improved wall (20) with an enlarged surface for use in an apparatus for performing a specific process, the wall comprising: a length of material (21) having opposite initial surfaces (21a, 21b), the material having a longitudinal center line (xx), located essentially in the middle of the distance between the original surfaces, the material has an initial transverse dimension, measured from the center line to a point on one of the two initial surfaces located farthest from the center line, each of the original surfaces having the density of the original surface, the surface density being determined by the number of elements (including zero) on the surface per unit of estimated surface area; secondary patterns (23) having surface densities of secondary patterns depressed on each of the original surfaces, the secondary patterns deforming the material and increasing surface densities on each surface and to increase the transverse dimension of the material from the center line to the farthest point of such a deformed material; and primary patterns (25) having surface densities of primary patterns embedded in each of such deformed surfaces, and further deforming material and further increasing surface densities on each of the surfaces.

[0052] Each surface density of the secondary pattern may be greater than each surface density of the primary pattern.

[0053] The secondary patterns may be the same.

[0054] The secondary patterns can be shifted relative to one another so that the maximum size from the center line to one deformed surface will correspond to the minimum size from the center line to the other deformed surface.

[0055] The maximum transverse dimension of the material from the center line to the farthest point of the deformed material may be less than 135% of the maximum transverse dimension from the center line to the farthest point on the original surface.

[0056] The maximum transverse dimension of the material from the center line to the farthest point of the deformed material may be less than 150% of the maximum transverse dimension from the center line to the farthest point on the original surface.

[0057] The maximum transverse dimension of the material from the center line to the farthest point of the deformed material may be less than 300% of the maximum transverse dimension from the center line to the farthest point on the original surface.

[0058] The maximum transverse dimension of the material from the center line to the farthest point of the deformed material may be less than 700% of the maximum transverse dimension from the center line to the farthest point on the original surface.

[0059] The minimum material size when measured from any point on one of such deformed surfaces to the nearest point on the opposite of one of such deformed surfaces is at least 95% of the minimum size from any point on one of the original surfaces to the nearest point on the opposite original surface .

[0060] The minimum material size when measured from any point on one of such deformed surfaces to the nearest point on the opposite of one of such deformed surfaces may be at least 50% of the minimum size from any point on one of the original surfaces to the nearest point on the opposite of the original surface.

[0061] The primary patterns may be the same or different.

[0062] The primary patterns can be shifted relative to one another so that the maximum size from the center line to one additionally deformed surface will correspond to the minimum size from the center line to another additionally deformed surface.

[0063] The minimum size of the additionally deformed material when measured from the center line to any point on one of the two additionally deformed surfaces can be 95% of the minimum size of the material when measured from the center line to one of the two original surfaces.

[0064] The minimum size of the additionally deformed material when measured from the center line to any point on one of the two additionally deformed surfaces can be 50% of the minimum size of the material when measured from the center line to one of the two original surfaces.

[0065] The depressed primary patterns may further increase the size from the center line to the outermost point of the additionally deformed material.

[0066] Accordingly, one task is to provide improved methods of forming walls with an enlarged surface for use in a device for performing a specific process.

[0067] Another objective is to provide improved walls with an enlarged surface.

[0068] Another other objective is to provide an improved device that includes an improved wall with an enlarged surface.

[0069] These and other objects and advantages will become apparent from the above and the following description, drawings and appended claims.

Brief Description of the Drawings

[0070] FIG. 1A is a schematic plan view of the length of a material showing the secondary 1 and primary 1 patterns depressed therein.

[0071] FIG. 1B is a side view of the structure schematically shown in FIG. 1A.

[0072] FIG. 2A is an enlarged plan view of the second 1 pattern, which is shown in FIGS. 1A-1B, depressed into the material.

[0073] FIG. 2B is an enlarged plan view of a primary 1 pattern depressed into a sheet of supplied material, wherein the scale in FIG. 2B is the same as the scale in FIG. 2A.

[0074] FIG. 2C is a top view of the superimposed primary 1 and secondary 1 patterns that are shown in FIGS. 1A-1B depressed into the material, the scale in FIG. 2C being the same as the scale in FIGS. 2A-2B.

[0075] Fig. 3A is a greatly enlarged partial vertical cross-sectional view of the material before the secondary 1 pattern is pressed into it, this view being taken generally along line 3A-3A in Fig. 1A.

[0076] FIG. 3B is a greatly enlarged partial view in vertical cross section taken generally along line 3A-3A in FIG. 2A, showing secondary 1 patterns depressed into the material.

[0077] FIG. 3C is a greatly enlarged partial sectional view taken generally along the line 3C-3C in FIG. 2B, showing secondary 1 patterns depressed into the material.

[0078] Fig. 3D is a greatly enlarged partial sectional view taken generally along the 3D-3D line in Fig. 2C, showing primary 1 and secondary 1 patterns depressed into the material.

[0079] Figure 4 is a schematic partial view in vertical section showing how the secondary 1 patterns are pressed into the material.

[0080] FIG. 5A is a schematic view showing how a wall thickness of a flat sheet is measured from point to point.

[0081] FIG. 5B is a schematic view showing how the wall thickness of a material is measured from point to point after the secondary 1 patterns are pressed into it.

[0082] FIG. 5C is a schematic view showing how the wall thickness of the secondary 1 patterns is measured from point to point.

[0083] Fig. 5D is a schematic view showing how the wall thickness of a finished material with an enlarged surface from point to point is measured, this material having superimposed primary 1 and secondary 1 patterns depressed into it.

[0084] FIG. 6A is a schematic view showing how the thickness of a region of a flat sheet is measured.

[0085] FIG. 6B is a schematic view showing how the thickness of a wall region is measured after the secondary 1 patterns are pressed into it.

[0086] FIG. 6C is a schematic view showing how the thickness of a wall region is measured after the primary 1 patterns are pressed into it.

[0087] FIG. 6D is a schematic view showing how the thickness of a wall region with an enlarged surface is measured after pressing the primary 1 and secondary 1 patterns therein.

[0088] Fig. 7A is a plan view showing another primary pattern, indicated by a primary 2 pattern, pressed into a sheet.

[0089] Fig. 7B is a partial cross-sectional view thereof in vertical section taken along line 7B-7B in Fig. 7A.

[0090] FIG. 7C is a schematic partial view in horizontal section taken generally along line 7C-7C in FIG. 7A.

[0091] Fig. 8A is a plan view of a third primary pattern, denoted by a primary 3 pattern, pressed into a sheet.

[0092] FIG. 8B is a partial view in vertical cross section taken generally along line 8A-8A in FIG. 8A.

[0093] FIG. 8C is a partial view in horizontal cross section taken generally along line 8C-8C in FIG. 8A.

[0094] Fig. 9A is a plan view showing another primary pattern, indicated by a primary 4 pattern, pressed into a sheet, wherein this pattern has a surface density (signs) of 0.5.

[0095] FIG. 9B is a view similar to FIG. 9A, but showing a different shape of the primary 4 pattern having a surface density of 1.0.

[0096] FIG. 9C is a view similar to FIGS. 9A and 9B, but showing a different form of the primary 4 pattern having a surface density of 2.0 equal to 2.0.

[0097] FIG. 10A is a plan view of another primary pattern, indicated by a primary 5 pattern, pressed into a sheet.

[0098] FIG. 10B is a partial view in vertical cross section taken generally along line 10B-10B of FIG. 10A.

[0099] Fig. 10C is a partial view in horizontal cross section taken generally along the line 10C-10C in Fig. 10A.

[00100] FIG. 11A is a top view of another secondary pattern, indicated by a secondary 2 pattern, depressed into the material, this view showing individual elements that are somewhat oval in shape.

[00101] Fig. 11B is a partial view in vertical cross section taken generally along line 11B-11B in Fig. 11A.

[00102] FIG. 11C is a partial view in horizontal cross section taken generally along line 11C-11C in FIG. 11A.

[00103] FIG. 12A is a top view of another secondary pattern, indicated by a secondary 3 pattern, pressed into a certain length of material, this view showing individual elements that are to some extent shaped like a lemon.

[00104] FIG. 12B is a partial view in vertical cross section taken generally along line 12B-12B of FIG. 12A.

[00105] FIG. 12C is a partial view in horizontal cross section taken generally along line 12C-12C of FIG. 12A.

[00106] Fig.13A is a top view of another primary pattern, indicated by the primary 6 pattern, pressed into a certain length of material.

[00107] Fig.13B is a partial view in vertical cross section taken generally along the line 13B-13B in Fig.13A.

[00108] FIG. 14A is another example of a cross-directional primary pattern, denoted by a primary 7 pattern, pressed into a certain length of material, this pattern being directed in both longitudinal and transverse directions.

[00109] Fig.14B is a partial view in vertical cross section taken generally along the line 14B-14B in Fig.14A.

[00110] Fig.14C is a partial view in horizontal cross section taken generally along the line 14C-14C in figa.

[00111] FIG. 15A is a partial view of another non-directional pebble pattern, indicated by a secondary 4 pattern, pressed into a specific length of material.

[00112] Fig.15B is a partial view in vertical cross section taken generally along the line 15B-15B in Fig.15A.

[00113] FIG. 15C is a partial view in horizontal cross section taken generally along line 15C-15C in FIG. 15A.

[00114] Fig.16A is a top view of another different directional pattern in the form of honeycombs, indicated by the secondary 4 pattern, pressed into a certain length of material.

[00115] Fig.16B is a partial view in vertical cross section taken generally along line 16B-16B in Fig.15A.

[00116] FIG. 16C is a partial view in horizontal cross section taken generally along line 16C-16C in FIG. 16A.

[00117] Fig.17 is a schematic view of one method of creating a tube with an enlarged surface.

[00118] FIG. 18A is a side view of a circular tube having an additional coating on its outer surface.

[00119] FIG. 18B is a side view of the right end of the round tube shown in FIG. 18A.

[00120] Fig. 18C is an enlarged detailed view of a round tube taken within the indicated circle in Fig. 18B and, in particular, showing a coating on the outer surface of the tube.

[00121] FIG. 19A is an isometric view of a rectangular tube.

[00122] FIG. 19B is a partial vertical cross-sectional view of a rectangular tube taken generally along line 19A-19A in FIG. 19A.

[00123] FIG. 19C is an enlarged detailed view of a wall portion of a rectangular tube, this view being taken within the indicated circle in FIG. 19B.

[00124] FIG. 20A is a side view of a U-shaped tube.

[00125] FIG. 20B is a slightly enlarged partial view in vertical cross section taken generally along line 20B-20B in FIG. 20A.

[00126] FIG. 20C is a further enlarged detailed view of a portion of a tube wall, this view being taken within the indicated circle in FIG. 20B.

[00127] FIG. 21A is a side view of a spiral wound spiral formed from a round tube having enlarged inner and outer surfaces.

[00128] FIG. 21B is a plan view of the spiral shown in FIG. 21A.

[00129] FIG. 21C is an enlarged, partial, vertical sectional view taken generally along line 21C-21C of FIG. 21A showing the tube in a spiral.

[00130] FIG. 21D is a further enlarged detailed view taken within the indicated circle in FIG. 21C showing a portion of a tube wall.

[00131] Fig.22 is a schematic view of one method of creating a plate with an enlarged surface.

[00132] FIG. 23A is a front view of a first plate with an enlarged surface having primary and secondary patterns pressed into it, and having a cooler tube and through holes.

[00133] Fig.23B is a partial view in vertical section taken generally along the line 23B-23B in Fig.23A.

[00134] FIG. 24A is a front view of a second plate with an enlarged surface having primary and secondary patterns pressed into it, and having a cooler tube and through holes.

[00135] Fig.24B is a partial view in vertical section taken generally along the line 24B-24B in Fig.24A.

[00136] FIG. 25A is a front view of a third plate with an enlarged surface having cooler tube holes and smaller through holes.

[00137] FIG. 25B is a front view of a fourth plate with an enlarged surface having cooler tube openings and intermediate through holes.

[00138] FIG. 25C is a front view of a fifth plate with an enlarged surface having cooler tube openings and large through holes.

[00139] Fig.25D is a front view of a sixth plate with an enlarged surface having openings of a cooler tube and one set of smaller intermediate and large through holes.

[00140] FIG. 25E is a front view of a seventh plate with an enlarged surface having cooler tube openings and another combination of smaller intermediate and larger through holes.

[00141] FIG. 26 is a schematic view of an improved heat exchanger having an enlarged surface heat exchanger tube therein.

[00142] FIG. 27A is a bottom view of an improved fluid cooler having enlarged surface tubes therein.

[00143] FIG. 27B is a partial view in horizontal section taken generally along line 27B-27B in FIG. 27A.

[00144] FIG. 27C is a side view of the improved cooler shown in FIG. 27A with the lid in the operating position.

[00145] Fig.27D is a partial view in vertical section taken generally along the line 27D-27D in Fig.27C, showing a bottom view of one of the plates.

[00146] Fig. 27E is an enlarged detailed view of a portion of one of the plates, this view being taken within the indicated circle in Fig. 27D.

[00147] FIG. 28 is a schematic view of a fluid flow vessel including enlarged surfaces.

[00148] FIG. 29A is a plan view of a heat exchanger plate including enlarged surfaces.

[00149] FIG. 29B is an enlarged detailed view of a portion of a plate of a heat exchanger, this view being taken within the indicated circle in FIG. 29A.

Description of Preferred Embodiments

[00150] First, it should be clearly understood that the same reference numerals are intended to denote the same structural elements, sections or surfaces in concert on several drawings of figures, elements, sections or surfaces themselves can be further described or explained throughout the description, this is a detailed the description of which is an integral part. In addition to otherwise indicated, the drawings are intended to be considered (for example, transverse hatching, construction of parts, proportion, degree, etc.) together with the description and should be considered as part of the entire description of this invention presented. As used in the following description, the expressions “horizontal,” “vertical,” “left,” “right,” “upper,” and “lower,” as well as their adjective and adverbial derivatives (e.g., “horizontally,” “right,” “up”, etc.), simply refer to the orientation of the illustrated construction, which an individual figure refers to the reader. Similarly, the expressions "inward" and "outward" generally refer to the orientation of the surface relative to its axis of extension or axis of rotation accordingly. In addition to other designations, all dimensions stated in the description and accompanying drawings are expressed in inches.

[00151] Further, in the drawings and more specifically in FIGS. 1-3, the present invention generally provides an improved method of forming a wall 20 with an enlarged surface for use in a device for performing a specific process. The device may be a heat exchange device, a specific type of fluid mixing device (either with or without a suitable heat transfer function), or some other form of device.

[00152] This application discloses multiple embodiments of enlarged surface walls having various primary and / or secondary patterns. The first embodiment is illustrated in FIGS. 1A-6D, the second in FIGS. 7A-7C, the third in FIGS. 8A-8C, the fourth in FIGS. 9A-9C, the fifth in FIGS. 10A-10C, the sixth in FIGS. 11A-11C seventh in FIGS. 12A-12C, eighth in FIGS. 13A-13C, ninth in FIGS. 14A-14C, tenth in FIGS. 15A-15C, and eleventh in FIGS. 16A-16C. These various drawings can be used in different combinations with each other and are not exhaustive of all the drawings falling within the scope of protection of the attached claims.

[00153] One method of creating an enlarged surface tube is shown schematically in FIG. 17, and several variations of such tubes are shown in FIGS. 18A-21D.

[00154] One way to create a plate with an enlarged surface is schematically shown in Fig.22, and several variants of such plates are shown in Fig.23A-25D.

[00155] An improved heat exchanger including tubes with an enlarged surface is shown schematically in FIG.

[00156] A cooler including such plates with an enlarged surface is depicted in FIGS. 27A-27E.

[00157] Another fluid flow vessel including enlarged surfaces is depicted in FIG. 28.

[00158] Finally, an improved plate having various enlarged surfaces is shown in FIGS. 29A-29B.

[00159] These various embodiments and applications will be described below in order.

The first embodiment (figa-6D)

[00160] An improved method generally begins by providing a certain length of material, a partial portion of which is generally indicated by 21. This material may be part of a plate-like blank, may be unwound from a spiral, or may have some other source or configuration. The material may be rectangular, having flat upper and lower initial surfaces 21a, 21b, respectively, and may have a longitudinally-transverse center line x-x, located essentially in the middle of the distance between these initial surfaces. As shown in FIG. 3A, the thickness of the material between the original surfaces 21a-21b may be about 0.035 inches, and therefore, the nominal distance from the center line to one of the two surfaces may be about 0.0175 inches.

[00161] The leading edge of the material in this first embodiment is then passed “to the right” (in the direction indicated by the arrow in FIG. 1A) between the pair of upper and lower first rollers or dies 22a, 22b, respectively, which press the secondary 1 patterns into the upper and lower surface respectively material. The upper and lower surfaces of the material after pressing the secondary 1 patterns into it are indicated by 23a, 23b, respectively. Next, the material is moved "to the right" between the second pair of upper and lower rollers or dies 24a, 24b, respectively, which press the primary 1 patterns into the upper and lower surfaces, respectively, of the material.

[00162] FIGS. 2A and 3B show the shape and configuration of the material after the secondary 1 patterns are pressed into it. Secondary 1 figures are in the form of a group of interlocking paving stones when viewed from above (FIG. 2A), but have a wave-like or sinusoidal shape when viewed in cross section (FIG. 3B).

[00163] FIGS. 2B and 3C show the shape of the primary 1 patterns, if such patterns were pressed into a sheet of flat workpiece material, without the secondary 1 patterns being pressed into it. As shown in FIGS. 2B and 3C, the primary 1 patterns are in the form of sequences of repeating step functions. 2B and 3C, the upper surface of the material is indicated by 25a, and its lower surface is indicated by 25b.

[00164] Thus, the material emerging from the second die has a primary 1 and secondary 1 patterns superimposed and pressed into it. These upper and lower surfaces of the material containing the superimposed primary 1 and secondary 1 patterns are indicated by 26a, 26b, respectively.

[00165] As shown in FIGS. 3A-3B, the step of pushing the secondary 1 patterns into the material increases the minimum initial thickness of the material wall region from about 0.035 inches to about 0.045 inches. As shown in FIGS. 3A and 3C, the step of pushing the secondary 1 patterns into the initially fed material will increase the minimum initial wall region thickness from about 0.035 inches to about 0.050 inches. However, as shown in FIG. 3D, when the primary 1 patterns are superimposed on the secondary 2 patterns, the thickness of the material that is deformed by the secondary 1 patterns (i.e., 0.045 inches) is further deformed to a size of about 0.052 inches (13).

[00166] In the accompanying drawings, FIGS. 2A-2C are depicted on the same scale (as indicated by 6.0 × 6.0) and enlarged relative to the structure shown in FIG. 1A. Figa-3D also depicted in the same scale, which is further enlarged relative to the scale in figa-2C and significantly increased relative to the scale in figa-1B.

[00167] Figure 4 shows how the secondary 1 patterns are pressed into the material. To this end, the upper and lower rollers 22a, 22b provide wave-like sinusoidal secondary 1 patterns that are vertically aligned with each other so that the apex of one is aligned with the hollow of the other. Material 21 is deformed by two rollers only partially. Thus, the material will have a sequence of dent-like concavities, indicated by 27, separated by intermediate arched bulges, separately indicated by 28. In an alternative method, the material may be completely deformed or “squeezed out” between the upper and lower rollers.

[00168] In a preferred embodiment, the steps of pushing the primary and secondary patterns into the material have the effect of deforming the material in a cold state. However, in an alternative method, the material may be heated and the method may also include a hot deformation step. Secondary drawings may be the same or may be different from one another. The step of pushing the secondary pattern into the material can increase the maximum transverse size of the material from the center line to the farthest point of the deformed material to 135% in one case, 150% in the other case, 300% in the third case and 700% in the fourth case of the maximum transverse dimension lines to the farthest point of the original surfaces. The step of pressing primary and secondary patterns into the material does not significantly reduce the minimum size of the material when measured from any point on one of the deformed surfaces to the nearest point on the opposite of one of the deformed surfaces below 95% in one case and 50% in the second case of the minimum size from any point on one of the original surfaces to the nearest point on the opposite original surface.

[00169] The primary patterns depressed on opposite sides of the material may be the same or may be different. The step of pressing the primary patterns into the material does not reduce the minimum size of the additionally deformed material when measured from the center line to any point on one of the two additionally deformed surfaces below 95% of the minimum size of the material when measured from the center line to one of the two initial surfaces.

[00170] The primary patterns pressed in opposite directions of the material may be the same or may be different. The step of pressing the primary patterns into the material does not reduce the minimum size of the additionally deformed material when measured from the center line to any point on one of the two additionally deformed surfaces below 50% of the minimum size of the material when measured from the center line to one of the two original surfaces.

[00171] In one aspect, the step of pushing the primary patterns into each of the surfaces can further increase the size from the center line to the outermost point of the additionally deformed material.

[00172] The initial surfaces may be flat or may be provided with a specific pattern or patterns embedded in them. The step of pressing the primary and secondary patterns into the material can be performed using the hardening operation, the stamping operation, the rolling operation, the pressing operation, the corrugation operation, or some other type of method or operation. Similarly, the material can be fed through the openings of the cooler tube and / or through the through holes, whichever pattern is required.

[00173] The method may further include an additional step in which the walls with the enlarged surface are bent so that the proximal ends are adjacent to one another, and the proximal ends of the material are joined together, for example by welding to form a tube with an enlarged surface. The method may include an additional step in which openings in the material are provided.

[00174] As indicated above, a wall with an enlarged surface can be installed in a heat exchanger, in a certain type of fluid control device, or also in other forms of the device.

[00175] The primary patterns may be directional or non-directional. An enlarged wall may correspond to at least one of the following ASME / ASTM designations: A249 / A, A135, A370, A751, E213, E273, E309, E1806, A691, A139, A213, A214, A268, A269, A270, A312 , A334, A335, A498, A631, A671, A688, A691, A778, A299 / A, A789, A789 / A, A789 / M, A790, A803, A480, A763, A941, A1016, A1012, A1047 / A, A250 , A771, A826, A851, B674, E112, A370, A999, E381, E426, E527, E340, A409, A358, A262, A240, A537, A530, A435, A387, A299, A204, A20, A577, A578, A285 , E165, A380, A262 and A179. Each of the above notation is hereby incorporated by reference.

[00176] The material may be provided with a coating (eg, a metal coating, etc.) on at least a portion of one of its original surfaces, or such initial surface (s) may be chemically treated (e.g. electropolishing, etc.). Such a coating and / or chemical treatment can be applied before, during or after the formation of enlarged surfaces on it. As used here, the expression "plot" includes a range from 0-100%.

[00177] The invention also includes a wall with an enlarged surface formed by the aforementioned method.

[00178] FIGS. 5A-5D show how wall thickness is measured from point to point during various steps of the method. As used here, the expression "wall thickness from point to point" means the thickness of the material from a point on its one surface to the nearest point on its opposite surface. Thus, FIG. 5A shows a micrometer that measures the initial thickness between the flat surfaces 21a, 21b. Fig. 5B shows a micrometer that measures the wall thickness after pressing secondary figures 1 into it. This view schematically shows two measuring orientations, one “vertical” thickness and the other at an angle so that the smaller of the two measured thicknesses can be used. Fig. 5C shows how wall thickness will be measured from point to point when the primary pattern is pressed into the material. Finally, FIG. 5D shows a micrometer that measures the wall thickness from point to point of the material after the primary 1 and secondary 1 patterns are pressed into it. And in this case, the smaller of the two measured thicknesses is used as a measurement of the minimum wall thickness. These two illustrations of the orientation of the micrometer are not exhaustive for all of its possible orientations.

[00179] Figa-6D show how the thickness of the material region is measured at various stages of the method. Thickness is measured by measuring the distance from peak to peak of opposing surfaces and usually spanning several peaks along each of the two surfaces. Thus, FIG. 6A shows a micrometer measuring the thickness of an initially supplied material having flat upper and lower surfaces 21a, 21b, respectively. Since these surfaces are flat, a micrometer can measure the distance between them without difficulty. FIG. 6B shows a micrometer that measures the thickness of a material after indentation of secondary 1 patterns therein. Note that the micrometer measures the thickness from peak to peak dimensions of both surfaces. Fig. 6C shows a micrometer that measures the thickness of the material if the primary 1 patterns were pressed into the originally supplied material. From this point of view, the micrometer again measures the thickness from peak to peak of the transversely multiple elements pressed into these surfaces. Finally, FIG. 6D shows a micrometer that measures the wall thickness of a material after pressing primary 1 and secondary 1 patterns into it.

[00180] Since the expression "wall thickness from point to point" means the thickness of the material from a point on its one surface to the nearest point on its opposite surface, it is sometimes necessary to measure this size both vertically and at different angles to determine the minimum thickness. However, since “region thickness” refers to the distance from a peak on one surface to a peak on an opposite surface, it can usually be measured vertically. The "area thickness" preferably surrounds a plurality of peaks on each surface.

Second Embodiment (Figs. 7A-7D)

[00181] The second primary pattern, designated by the primary 2 pattern, is illustrated in FIGS. 7A-7C and is generally indicated by 30. This pattern is somewhat similar to enlarged cells and has an upper surface 31a and a lower surface 31b. This pattern is directional in the vertical direction, but not directional in the horizontal direction. Vertical and horizontal cross sections are shown in FIGS. 7B-7C.

Third Embodiment (FIGS. 8A-8C)

[00182] FIGS. 8A-8C show another groove-like primary pattern indicated by a primary 3 pattern. This pattern is generally indicated at 32. This pattern is directional in the vertical direction, but non-directional in the horizontal direction. Vertical and horizontal cross sections are shown in FIGS. 8B-8C. This pattern has sine waves, albeit with different periods, in each of the two orthogonal transverse directions on its upper and lower surfaces.

Fourth Embodiment (Figs. 9A-9D)

[00183] Figs. 9A-9C show another secondary pattern, indicated by the secondary 2 pattern. This figure contains sequences of dent-like depressions on one surface and vertically aligned bulges on the opposite surface. If necessary, these dents may be interspersed or in line. This figure is generally indicated at 34 in FIG. 9A and is shown having an upper surface 35a.

[00184] FIGS. 9B-9C show density options in the figure shown in FIG. 9A. 9A, the pattern is indicated by 34 ', and its upper surface is indicated by 35a'. The surface density of the dents in figure 34 shown in FIG. 9A is 0.5 of the density for the transformed figure 34 'shown in FIG. 9B and 0.25 of the density for the further transformed figure 34 ’shown in FIG. 9C. Thus, the surface density of the dent-like elements in Fig. 9B is two times higher than the density shown in Fig. 9A. Similarly, the surface density of the dent-like elements in FIG. 9C is two times the density shown in FIG. 9B and four times the surface density of the elements shown in FIG. 9A.

[00185] FIGS. 9A-9C are depicted on the same scale, as indicated by dimensions of 6.0 × 6.0.

Fifth Embodiment (FIGS. 10A-10D)

[00186] FIGS. 10A-10C show another chevron-shaped secondary pattern, indicated by a secondary 4 pattern. This pattern is non-directional in both longitudinal and transverse directions. This pattern is generally indicated at 36 and has upper and lower surfaces 38a, 38b.

Sixth Embodiment (FIGS. 11A-11D)

[00187] FIGS. 11A-11C show another shape of a secondary pattern, indicated by a secondary 2 pattern, pressed into the material. In this form, individual dents or elements (signs) have an oval shape to some extent. Note that the dent period is different in two orthogonal directions, as shown in FIGS. 11A-11B. This figure is generally indicated at 39 and shown to have upper and lower surfaces 40a, 40b, respectively.

Seventh Embodiment (FIGS. 12A-12D)

[00188] FIGS. 12A-12C show another type of secondary pattern, indicated by secondary 3 pattern. The dents or elements of this pattern are to some extent the shape of a lemon. And in this case, note that the dent period is different in each of the two orthogonal transverse directions, as shown in FIGS. 12A-12B. This pattern is generally indicated at 41 and shown to have upper and lower surfaces 42a, 42b, respectively.

Eighth Embodiment (FIGS. 13A-13D)

[00189] FIGS. 13A-13B are used to illustrate a directional pattern indicated by a primary 6 pattern. This figure is generally indicated at 43 and shown to have upper and lower surfaces 44a, 44b, respectively. Note that the pattern has sequences of step functions on its opposite surfaces, as shown in FIG. 13B. We also note that the elements are aligned so that each protrusion on one surface corresponds to a dent on another surface. This pattern is directed in the horizontal direction, not in the vertical direction.

Ninth Embodiment (FIGS. 14A-14D)

[00190] Figs. 14A-14C show a crossed secondary pattern, indicated by a secondary pattern 7, pressed into the material. This figure is generally indicated at 45 and shown having an upper surface 46a and a lower surface 46b. This pattern is directional (i.e., continuous) in both horizontal and vertical directions. Note that the period of the elements is the same in both orthogonal directions.

Tenth embodiment (FIGS. 15A-15D)

[00191] FIGS. 15A-15C show an intermittent pebble, albeit repeating, non-directional secondary pattern depressed into the material. This pattern is indicated by a secondary 4 pattern. This pattern is generally indicated by 48 and has upper and lower surfaces 49a, 49b, respectively. Cross sections in orthogonal axes are shown in FIGS. 15B-15C, respectively. On figv-15C note that the dent on one surface is vertically aligned with the protrusion on the other surface. This pattern is non-directional in the sense that the pattern is interrupted in each of the horizontal and vertical directions. As used here, the expression “directional” with respect to the pattern means that the lines of the pattern are continuous and do not interrupt along the direction, while the expression “undirected” means that the lines of the pattern are interrupted along the direction, even if the pattern can be repeated.

Eleventh embodiment (FIGS. 16A-16D)

[00192] FIGS. 16A-16C show another type of honeycomb non-directional secondary pattern, indicated by secondary 5 pattern, pressed into the material. This figure is generally indicated at 50 and shown to have upper and lower surfaces 51a, 51b, respectively. This pattern is non-directional in vertical and horizontal directions.

A method of creating a tube with an enlarged surface (Fig.17)

[00193] Fig.17 depicts one method of creating a round tube having enlarged surfaces. According to this method, a coil 52 is unwound having primary and secondary patterns (and additionally, any cooler tube and through holes). The leading edge of the material passes through a series of rollers and roller dies, separately indicated at 53, within which the flat sheet material is folded into a round tube with two longitudinal edges placed adjacent to each other or preferably end-to-end. Next, the rolled tube is passed through the pre-heating unit 54 and the welding unit 55 for welding the longitudinal edges together. Next, the welded tube is passed through a secondary heating unit 56 to subject the annealing of the weld and material and then cooled in the cooling unit 58. Next, the cooled welded tube is passed through a deburring tool to smooth the edges of the welds and additionally moved to the right with rollers 60, 60.

Round tube (Fig. 18A-18C)

[00194] The tube may have many different shapes and cross-sections. Figa-18C depicts the length of the welded round tube, which can be made by the method indicated in Fig.17. The tube, generally indicated at 62, is shown having primary and secondary patterns. As best shown in FIG. 18B, tube 62 has a thin-walled circular cross-section.

[00195] The outer wall of the tube is also shown having a coating 63 thereon. This coating may be a metal coating or some other form of coating or lamination. This coating is optional and can be provided on any of the enlarged surfaces disclosed herein. If necessary, a coating can be provided on the inner or outer surface of the tube.

Rectangular Tube (Fig. 19A-19C)

[00196] As noted above, not all tubes have a circular cross section. Certain tubes have oval-shaped cross sections, polygonal cross sections, or the like.

[00197] FIGS. 19A-19C depict a tube 64 having a generally rectangular cross section with primary and secondary patterns on its inner and outer surfaces. If required, this tube may be coated or chemically treated.

U-shaped tube (figa-20C)

[00198] FIGS. 20A-20C depict a round tube that is curved into a U shape when viewed from the side. This tube, generally indicated at 65, has primary and secondary patterns on its inner and outer surfaces.

The spiral formed from a round tube (figa-21D)

[00199] Figa-21D depict a spiral with a spiral winding formed from a certain length of a round tube. This spiral, generally indicated at 66, has primary and secondary patterns on its inner and outer surfaces.

A method of creating a plate with an enlarged surface (Fig.22)

[00200] Fig.22 is a schematic view of one method of forming plates with an enlarged surface. In this method, a spiral 68 of material with primary and secondary patterns is unwound. The leading edge of the material extends around the guide rollers 69a, 69b, 69c and then passes between the opposite pair of roller dies 70a, 70b, which pierce or form various holes (for example, cooling tube holes and / or through holes in the form of any desired pattern) in the material. Next, the leading edge is passed through a second pair of roller dies 71a, 71b, which form protrusions on the material. The leading edge is passed through passage scissors 72, where individual plates, individually indicated at 73, are cut from the web material. These plates are moved to the right by the action of the rollers 74.

Plates having cooler tube openings and through holes (FIGS. 23A-25E)

[00201] FIGS. 23A-25E show various forms of improved plates having various sets of primary and secondary patterns and having cooler tube openings and through-holes of various sizes.

[00202] The first shape of the plates is generally indicated at 75 in FIGS. 23A-23B. In this first form, the individual elements of the primary and secondary patterns are indicated by 76 ', 76' ', respectively. The openings of the cooling tube (i.e., openings in the plate to allow passage to various cooling tubes (not shown)) are separately indicated by 77, and relatively small through holes are separately indicated by 78.

[00203] The second form of the plates is generally indicated by 79 in FIGS. 24A-24B. In this second form, the individual elements of the primary and secondary patterns are again indicated by 76 '76', respectively. The openings of the cooling tube and relatively small passage openings are again indicated by 77, 78, respectively. Note that the second plate 78 is thinner and is deformed to a greater depth than the first plate 75.

[00204] Five different plates are illustrated in FIGS. 25A-25E. In each of these figures, the holes or slots of the cooling tube are indicated by 77. A characteristic difference between the five figures is the size and configuration of the through holes. In FIG. 25A, a third plate shape, generally indicated by 79, is shown having a plurality of smaller apertures, separately indicated by 80. In FIG. 25B, a fourth plate shape, generally indicated by 79 ′, is shown having an intermediate sized apertures, denoted by 80 '. In FIG. 25C, a fifth plate shape, generally indicated by 79 ″, is shown having larger through-holes, separately indicated by 80 ″. Fig. 25D illustrates a sixth form of a plate having various vertical rows of small, intermediate and large passage openings. 25E illustrates a seventh plate shape having another combination of small, intermediate, and large through holes. In each of these cases, the plate has primary and secondary patterns.

Improved heat exchanger (Fig.26)

[00205] An improved heat exchanger, generally indicated at 81, is shown in FIG. 26 having an outer casing 82. A winding heat exchanger tube 83 with an enlarged surface extends between the hot inlet and the hot outlet in the casing. Cold fluid is received into the housing through the cold inlet and flows through the pipe toward the cold outlet through which it exits the housing. If necessary, the inlet and outlet connections and / or the geometry of the tube can be changed (a).

Improved cooler (Fig.27A-27E)

[00206] FIGS. 27A-27E depict an improved cooler, generally indicated at 84. This cooler is shown to have a plurality of enlarged surface tubes, individually indicated at 85, which penetrate the bottom 86 and which rise upward through a plurality of vertically spaced plates, individually labeled 88. The tubes wrap around the plates in a tortuous manner. If necessary, here again the hydraulic connections and / or the geometry of the tube can be changed. Each plate is shown having a plurality of cooler tube openings 89 to allow passage of tubes. Each plate has primary and secondary patterns and may additionally have multiple through holes in the form of any desired pattern.

[00207] Fig. 27A is a plan view of the bottom of the cooler. FIG. 27B is a partial vertical sectional view of a cooler taken generally along line 27B-27B in FIG. 27A, and shows tubes extending up and down through aligned openings of the cooler tube in the plates. 27C is a side view of a cooler. Fig. 27D is a partial horizontal sectional view of a cooler taken generally along line 27D-27D in Fig. 27C, and shows a bottom view of one of the plates. Finally, FIG. 27E is an enlarged detailed view of the lower right portion of the plate, this view being taken within the indicated circle in FIG. 27D.

Improved fluid flow capacity (FIG. 28)

[00208] The improved fluid flow capacity is generally indicated at 90 in FIG. 28. This tank is shown comprising a pillar of the process, generally indicated at 91, which includes a plurality of vertically spaced walls with an enlarged surface, individually indicated at 92. Evaporation rises through the column by sequential passage through various walls, and the liquid is lowered through the column by sequential passage through various the walls. Evaporation on the top of the column passes through line 93 to condenser 94. The liquid returns to the uppermost chamber inside the column through line 95. At the bottom of the process column, the collected liquid is pumped through line 96 to a reboiler 98 with an enlarged surface. Evaporation leaving this reboiler is fed into the lowest chamber of the column through line 99.

Improved heat exchanger plate (FIGS. 29A-29B)

[00209] Fig. 29A depicts an improved heat exchanger plate generally indicated at 100. Many of these plates can be stacked one on top of the other, and adjacent plates can be sealed with a gasket (not shown) to define flow channels between them. FIG. 29B shows that portions of the heat exchanger plate may have such enlarged surfaces to facilitate heat transfer. 29B clearly shows that the illustrated plate portion may have primary patterns 101 and secondary patterns 102.

[00210] In this regard, the present invention generally provides an improved method of forming a wall with an enlarged surface for use in an apparatus for performing a specific process, an improved wall with an enlarged surface, and using it.

Conversions

[00211] The present invention contemplates that many changes and transformations can be made. For example, while the material can preferably be formed of stainless steel, other types of material (s) can be used (for example, various alloys of aluminum, titanium, copper, etc., or various ceramic materials). The material may be homogeneous or heterogeneous. It can be coated or chemically treated, either before, during, or after performing the method described here. As illustrated above, primary and secondary patterns can have many different shapes and configurations, some continuous and directed, and others vice versa. The same types or configurations of elements can be used in primary and secondary drawings with a difference in depth and / or surface density of such elements. The various heat exchangers disclosed herein may be complete on their own or may be sections of large devices that may have a shape other than that shown.

[00212] In this regard, while an improved method and apparatus are shown and described, and several transformations and changes discussed, those skilled in the art will understand that various additional changes and transformations can be made without departing from the scope of the invention, which is defined and is differentiated by the following claims.

Claims (18)

1. A method of forming a wall with an enlarged surface for use in a device for performing a specific process, comprising the steps of:
provide a length of material having opposite initial surfaces, said material having a longitudinal center line located substantially in the middle between said original surfaces, the material has an initial transverse dimension, measured from said center line to a point on one of said initial surfaces located farthest from the specified center line, and each of these initial surfaces has a density of the original surface, and the specified surface density is determined by the number of elements on the surface per unit of estimated surface area;
press secondary patterns having surface densities of secondary patterns onto each of said initial surfaces to deform said material and to increase surface densities on each of said surfaces and to increase the transverse dimension of said material from said center line to the farthest point of such a deformed material;
wherein the step of pushing said secondary patterns into said material increases the maximum transverse dimension of said material from said axial line to the farthest point of said deformed material to 150% of the maximum transverse dimension from said axial line to said farthest point on one of said initial surfaces; and
press primary patterns having surface densities of primary patterns on each of such deformed surfaces for additional deformation of the material and for an additional increase in surface densities on each of these surfaces;
moreover, the step of pressing said primary patterns into said material does not reduce the minimum size of such an additionally deformed material when measured from said axial line to any point on one of these additionally deformed surfaces below 50% of the minimum size of said material when measured from said axial line to the farthest point on one of these initial surfaces;
thereby providing walls with an enlarged surface for use in a device for performing a specific process. 2. The method according to claim 1, in which each surface density of the secondary pattern is greater than each surface density of the primary pattern. 3. The method according to claim 1, wherein the step of pushing said secondary patterns into each of said initial surfaces includes an additional step in which said material is deformed in a cold state. 4. The method according to claim 1, in which the step of pressing these primary patterns into each of the deformed surfaces includes an additional step in which the specified material is deformed in the cold state. 5. The method of claim 1, wherein said secondary patterns are the same. 6. The method according to claim 5, in which these secondary patterns are shifted relative to one another so that the maximum size from the specified center line to one deformed surface will correspond to the minimum size from the specified center line to another deformed surface. 7. The method according to claim 1, wherein the step of pressing said secondary patterns into said material does not reduce the minimum size of said material when measured from any point on one of such deformed surfaces to the nearest point on the opposite of one of such deformed surfaces below 95% of the minimum size from any point on one of the indicated initial surfaces to the nearest point on the opposite initial surface. 8. The method according to claim 1, wherein the step of pressing said secondary patterns into said material does not reduce the minimum size of said material when measured from any point on one of such deformed surfaces to the nearest point on the opposite of one of such deformed surfaces below 50% of the minimum size from any point on one of the indicated initial surfaces to the nearest point on the opposite initial surface. 9. The method according to claim 1, in which these primary drawings are the same. 10. The method according to claim 9, in which the specified primary patterns are shifted relative to one another so that the maximum size from the specified center line to one additional deformed surface will correspond to the minimum size from the specified center line to another additionally deformed surface. 11. The method according to claim 1, wherein the step of pressing said primary patterns into said material does not reduce the minimum size of such additionally deformed material when measured from the specified center line to any point on one of these specified additionally deformed surfaces below 95% of the minimum size of said material when measured from the indicated center line to the farthest point on one of the two indicated initial surfaces. 12. The method according to claim 1, in which the opposite surfaces of the specified material are initially flat. 13. The method according to claim 1, wherein the step of pushing said patterns includes the steps of pushing said patterns using at least one of the stamping and rolling operations. 14. The method according to claim 1, additionally containing additional steps, in which:
bending the wall with an enlarged surface so that the proximal ends are placed proximal to each other; and
connecting together the proximal ends of the specified material;
thereby forming a tube with an enlarged surface. 15. The method according to 14, in which the step of connecting together the proximal ends of the specified material includes an additional step in which the proximal ends of the material are welded to connect them together. 16. The method according to claim 1, additionally containing an additional step, which provide holes in the specified material. 17. The method according to claim 1, additionally containing an additional step, which sets the specified wall with an enlarged surface in a heat exchange device. 18. The method according to claim 1, further comprising an additional step in which a wall with an enlarged surface is mounted in the fluid control device.

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