EP0932008B1 - Heizkörper, insbesondere für Heizungsanlage, mit hoher Innendruckfestigkeit - Google Patents
Heizkörper, insbesondere für Heizungsanlage, mit hoher Innendruckfestigkeit Download PDFInfo
- Publication number
- EP0932008B1 EP0932008B1 EP99100364A EP99100364A EP0932008B1 EP 0932008 B1 EP0932008 B1 EP 0932008B1 EP 99100364 A EP99100364 A EP 99100364A EP 99100364 A EP99100364 A EP 99100364A EP 0932008 B1 EP0932008 B1 EP 0932008B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tubular portion
- section
- cross
- radiator
- fins
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
- F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
- F28D1/0233—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with air flow channels
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
- F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
- F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
- F28D1/053—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight
- F28D1/0535—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight the conduits having a non-circular cross-section
- F28D1/05358—Assemblies of conduits connected side by side or with individual headers, e.g. section type radiators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
- F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
- F28F1/14—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending longitudinally
- F28F1/16—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending longitudinally the means being integral with the element, e.g. formed by extrusion
Definitions
- the present invention relates to a radiator as defined in the preamble of claim 1.
- a radiator is known for instance from CH-A-556523.
- modern heating system radiators may comprise a number of standard modules packed side by side in fluidtight manner and connected to the system piping.
- the modules may be molded from light alloy, and comprise a tubular portion, along which the heat exchange fluid flows, and a finned portion formed integrally in one piece with the tubular portion, and which receives the heat conveyed by the heat exchange fluid and exchanges this heat with the environment by convection and radiation.
- the tubular portion normally has a flat cross section, as shown for example in Figure 1, which is normally constant along the whole length (height) of the tubular portion, and is substantially in the form of a lozenge, rectangle or double isosceles trapezium with rounded edges and maximum transverse dimensions measured parallel to two perpendicular axes of symmetry indicated X (major axis, i.e. parallel to the major dimension) and Y (minor axis).
- Radiators comprising known modules of the above type have a low resistance to internal pressure.
- known radiators when burst tested, known radiators are damaged by a 14-24 bar internal heat exchange fluid pressure, while radiators capable of withstanding higher pressures normally have a tubular portion with a thicker lateral wall, which increases both weight and cost.
- modules having circular tubular portions as shown for example in CH-A-660913, cannot be easily packed, although round tubular portions are more pressure resistant than flat tubular portions.
- a radiator comprising at least one module, in turn comprising a tubular portion with a flat cross section; opposite top and bottom ends having respective lateral hydraulic fittings substantially aligned along a minor axis of the cross section; and a finned portion formed integrally in one piece with a lateral wall of the tubular portion; the finned portion including first fins originating directly from the tubular portion, and second fins originating transversely from respective front ribs in turn originating from the tubular portion and perpendicular to the first fins; the ribs being substantially aligned with a major axis of the cross section; characterized in that the cross section has a dimension, measured along the major axis, smaller than or equal to approximately 45% of the depth of the module, also measured along the major axis.
- each rib has no fins, and comprises a number of respective ridges connecting the rib both to the lateral wall of the tubular portion, and to a respective second fin carried by the rib and immediately adjacent to the tubular portion.
- the geometry defined by the above parameters provides for achieving radiators capable of resisting internal pressures of over 35-40 bars, while at the same time maintaining a relatively thin tubular portion wall (2.4 to 4.5 mm) and, hence, light weight and low cost, and maintaining overall module dimensions perfectly compatible with currently used heating systems (module depth of over 80 mm; any module height, measured along the tubular portion axis; and high-density side by side packing in confined spaces).
- radiator 1 indicates as a whole a radiator for civil and industrial heating systems, and of which only one module 2 is shown for the sake of simplicity.
- radiator 1 may comprise any number of modules 2 connected side by side in a group and in fluidtight manner to one another.
- each module 2 comprises a tubular portion 3 having a substantially vertical longitudinal axis and a flat radial cross section 4; and a finned portion 5 formed integrally in one piece with a lateral wall 6 of tubular portion 3.
- Section 4 is flat by comprising widely differing transverse dimensions measured parallel to two perpendicular axes of symmetry indicated X and Y. More specifically, since the X axis dimension is greater than the Y axis dimension, the X axis is hereinafter referred to as the "major axis", and the Y axis as the "minor axis".
- tubular portion 3 The opposite top and bottom longitudinal ends 7, 8 of tubular portion 3 are provided, laterally, with respective cylindrical hydraulic fittings 10 substantially aligned along the minor axis Y of the corresponding cross section 4, i.e. with the respective axes of symmetry substantially coaxial with the Y axis of section 4 located at the same height as the axes of fittings 10, i.e. in the same longitudinal position (with respect to the axis of symmetry of portion 3) as fittings 10.
- Each module 2 is preferably injection molded from light alloy or similar material, for which purpose, the bottom end 8 is open, and is closed, in use, in known manner by a welded plug 8a.
- Finned portion 5 comprises a first number of fins 11 originating directly from tubular portion 3; and a second number of fins 12 originating transversely from respective front ribs 13, in turn originating from tubular portion 3 and perpendicular to fins 11.
- Ribs 13 are substantially aligned with the major axis X of all the cross sections 4 of tubular portion 3.
- each cross section 4 of tubular portion 3 has an inside dimension D, measured along major axis X, smaller than or equal to approximately 45% of the depth P of module 2, also measured parallel to the X axis of the corresponding section 4 ( Figure 2). That is, for each section 4, the following inequality applies : (1) D ⁇ 0.45 P
- Equation (1) applies in particular to cross section 4 in plane C-C ( Figure 2), i.e. to section 4 corresponding to the bottom end (i.e. closest to fittings 10 of end 8) of a finned portion 15 of tubular portion 3, defined by the longitudinal portion of portion 3 provided with fins 11.
- Equation (1) also applies to the rest of finned portion 15, except that, modules 2 being injection molded, value D, as any injection expert will know, must be further reduced by the amount due to the draft angle.
- the thickness S of lateral wall 6 of tubular portion 3 ideally ranges between approximately 2.4 and 4.5 mm. These values refer to a "mean" thickness S calculated as the arithmetic mean of two wall 6 thicknesses measured at diametrically opposite points of respective section 4.
- each cross section 4 of tubular portion 3 has a dimension L, measured along minor axis Y, equal to or greater than approximately 15% of dimension D of the same cross section 4, measured along the major axis X.
- L measured along minor axis Y
- D dimension of the same cross section 4
- Equation (2) applies in particular to cross section 4 in plane C-C ( Figure 2).
- each rib 13 has a root portion 20 with no fins 12, and which originates from a corresponding portion, with no fins 11, of lateral wall 6 of tubular portion 3; portion 20 of each front rib 13 comprises a number of respective ridges 22 along the whole length of finned portion 15; and ridges 22 are so formed as to connect each rib 13 both to the portion of lateral wall 6 of tubular portion 3 from which root portion 20 originates, and to the fin 12 closest to root portion 20, i.e. the one on rib 13 immediately adjacent to tubular portion 3.
- each cross section 4 may vary along the axial extension of tubular portion 3, or may remain substantially constant along the whole axial extension of tubular portion 3, providing, obviously, equations (1) and (2) are met.
- cross section 4 of tubular portion 3 may therefore be shaped as shown in planes A-A and B-B in Figure 2, i.e. in the form of a substantially rectangular ring with rounded corners and slightly outward-curving sides.
- plane C-C it may resemble the lozenge shape, but with different dimensional ratios between the major and minor axes X and Y in accordance with equations (1) and (2).
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Geometry (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Resistance Heating (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
- Pipe Accessories (AREA)
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
- Steam Or Hot-Water Central Heating Systems (AREA)
Claims (7)
- Radiator (1), umfassend zumindest ein Modul (2), das wiederum einen röhrenförmigen Bereich (3) mit einem flachen Querschnitt (4); gegenüberliegende obere und untere Enden (7, 8) mit jeweiligen lateralen hydraulischen Verbindungen (10), die im wesentlichen längs einer Nebenachse (Y) des Querschnitts ausgerichtet sind; und einen Finnenbereich (5) umfasst, der integral in einem Stück mit einer Seitenwand (6) des röhrenförmigen Bereichs (3) ausgebildet ist; wobei der gefinnte Bereich (5) erste Finnen, die direkt vom röhrenförmigen Bereich (3) ausgehen und zweite Finnen (12), die quer von entsprechenden Frontrippen (13) ausgehen, die wiederum vom röhrenförmigen Bereich (3) ausgehen und orthogonal zu den ersten Finnen (11) sind, enthalten; wobei die Rippen (13) im wesentlichen an einer Hauptachse (X) des Querschnitts (4) ausgerichtet sind; dadurch gekennzeichnet, dass der Querschnitt (4) eine Abmessung (D), gemessen längs der Hauptachse (X), aufweist, die kleiner als oder gleich ungefähr 45 % der Tiefe (P) des Moduls (2), ebenfalls längs der Hauptachse (X) gemessen, ist.
- Radiator gemäß Anspruch 1, dadurch gekennzeichnet, dass ein Basisbereich (20) jeder Rippe (13) keine Finnen aufweist und eine Anzahl entsprechender Wülste (22) umfasst, welche die Rippe (13) sowohl mit der lateralen Wand (6) des röhrenförmigen Bereichs (3) als auch mit einer entsprechenden zweiten Finne (12), die von der Rippe (13) getragen wird und unmittelbar am röhrenförmigen Bereich (3) angrenzt, verbindet.
- Radiator gemäß Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Querschnitt (4) des röhrenförmigen Bereichs (3) eine Wanddicke (S) aufweist, die zwischen ungefähr 2,4 und ungefähr 4,5 mm liegt.
- Radiator gemäß einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass der Querschnitt (4) des röhrenförmigen Bereichs (3) eine Abmessung (L), gemessen längs der Nebenachse (Y), aufweist, die gleich oder größer als ungefähr 15 % der Abmessung (D) desselben Querschnitts (4), gemessen längs der Hauptachse (X) ist.
- Radiator gemäß einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass die längs der Hauptachse (X) und der Nebenachse (Y) jedes Querschnitts (4) gemessenen Abmessungen (D, L) längs der axialen Ausdehnung des röhrenförmigen Bereichs (3) variieren können oder im wesentlichen längs der gesamten axialen Ausdehnung des röhrenförmigen Bereichs konstant bleiben können.
- Radiator gemäß einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass zumindest längs eines axialen Bereichs des röhrenförmigen Bereichs (3), der die ersten Finnen (11) aufweist, der Querschnitt (4) des röhrenförmigen Bereichs (3) die Form eines im wesentlichen rechteckigen Rings mit gerundeten Ecken und leicht auswärts gebogenen Seiten aufweist.
- Radiator gemäß einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass die Tiefe (P) des Moduls (2), gemessen längs der Hauptachse (X) des Querschnitts (4) des röhrenförmigen Bereichs (3) über 80 mm beträgt.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SI9930402T SI0932008T1 (en) | 1998-01-16 | 1999-01-15 | Radiator, in particular for heating systems, with a high resistance to internal pressure |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT98TO000038A ITTO980038A1 (it) | 1998-01-16 | 1998-01-16 | Radiatore, in particolare per impianti di riscaldamento, presentante a lta restistenza alla pressione interna. |
ITTO980038 | 1998-01-16 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0932008A2 EP0932008A2 (de) | 1999-07-28 |
EP0932008A3 EP0932008A3 (de) | 2000-05-10 |
EP0932008B1 true EP0932008B1 (de) | 2003-08-06 |
Family
ID=11416303
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99100364A Expired - Lifetime EP0932008B1 (de) | 1998-01-16 | 1999-01-15 | Heizkörper, insbesondere für Heizungsanlage, mit hoher Innendruckfestigkeit |
Country Status (10)
Country | Link |
---|---|
EP (1) | EP0932008B1 (de) |
AT (1) | ATE246793T1 (de) |
CZ (1) | CZ299359B6 (de) |
DE (1) | DE69910089D1 (de) |
EA (1) | EA001710B1 (de) |
IT (1) | ITTO980038A1 (de) |
PL (1) | PL193192B1 (de) |
SI (1) | SI0932008T1 (de) |
SK (1) | SK285469B6 (de) |
UA (1) | UA59364C2 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1471309A3 (de) * | 2003-04-24 | 2004-12-08 | Industrie Meccaniche di Alano S.r.l. | Heizkörper mit vielseitig anpassbaren Abdeckungen, insbesondere für Hausheizungssysteme |
ITUA20164170A1 (it) * | 2016-06-07 | 2017-12-07 | Fondital Spa | Dispositivo di riscaldamento ad alta efficienza |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH556523A (de) * | 1974-05-20 | 1974-11-29 | Paveg Anstalt | Gliederradiator. |
DE2703632A1 (de) * | 1977-01-28 | 1978-08-10 | Schiedel Kg | Waermetauschrohr eines radiators fuer raumtemperierung |
CH660913A5 (en) * | 1981-08-11 | 1987-05-29 | Schiedel Gmbh & Co | Finned tube for a heat exchanger, in particular a space heater |
-
1998
- 1998-01-16 IT IT98TO000038A patent/ITTO980038A1/it unknown
-
1999
- 1999-01-14 UA UA99010220A patent/UA59364C2/uk unknown
- 1999-01-15 AT AT99100364T patent/ATE246793T1/de not_active IP Right Cessation
- 1999-01-15 DE DE69910089T patent/DE69910089D1/de not_active Expired - Lifetime
- 1999-01-15 PL PL330858A patent/PL193192B1/pl not_active IP Right Cessation
- 1999-01-15 EA EA199900037A patent/EA001710B1/ru not_active IP Right Cessation
- 1999-01-15 CZ CZ0013299A patent/CZ299359B6/cs not_active IP Right Cessation
- 1999-01-15 SK SK61-99A patent/SK285469B6/sk not_active IP Right Cessation
- 1999-01-15 SI SI9930402T patent/SI0932008T1/xx unknown
- 1999-01-15 EP EP99100364A patent/EP0932008B1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP0932008A2 (de) | 1999-07-28 |
UA59364C2 (uk) | 2003-09-15 |
SI0932008T1 (en) | 2003-12-31 |
CZ13299A3 (cs) | 1999-09-15 |
SK6199A3 (en) | 2000-02-14 |
PL193192B1 (pl) | 2007-01-31 |
ATE246793T1 (de) | 2003-08-15 |
CZ299359B6 (cs) | 2008-07-02 |
DE69910089D1 (de) | 2003-09-11 |
ITTO980038A1 (it) | 1999-07-16 |
PL330858A1 (en) | 1999-07-19 |
EP0932008A3 (de) | 2000-05-10 |
EA199900037A3 (ru) | 1999-12-29 |
EA199900037A2 (ru) | 1999-08-26 |
SK285469B6 (sk) | 2007-02-01 |
EA001710B1 (ru) | 2001-06-25 |
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