radiator

Abstract

A radiator (10, 110, 210) comprising: - at least two radiant plates in fluidic communication, comprising: - at least one first plate (2a, 7a, 9a), - at least one second plate (2b, 7b, 9b), - at least one element (90, 150, 93, 153, 96, 156) for fluidic communication between the at least two plates (2a, 2b, 7a, 7b, 9a, 9b), - at least two connectors comprising: - at least one first connector (3a, 4a, 5a, 8a, 11a, 12a) for the outflow of a working fluid, - at least one second connector (3b, 4b, 5b, 8b, 11b, 12b) for the inflow of the working fluid. The at least one first connector (3a, 4a, 5a, 8a, 11a, 12a) is connected to the at least one first plate (2a, 7a, 9a) and the at least one second connector (3b, 4b, 5b, 8b, 11b, 12b) is connected to the at least one second plate (2b, 7b, 9b).

Description

[0001] The present invention relates to a radiator.

[0002] Nowadays devices such as radiators are widely used in public and / or private places, for the purpose of heating the air by virtue of the transfer of heat energy from a hot fluid to the environment that it is desired to heat by means of convection.

[0003] Several technical solutions are known, all of which are substantially made up of: two hollow quadrangular plates of heat-conducting material, such as steel, aluminum or cast iron, inside which a heat carrier fluid flows; a plurality of pipes for transferring the fluid into and out of the plates and circulating the fluid inside the plates.

[0004] The plates are usually rectangular and flat in extension and are connected to each other by virtue of connection systems that allow the fluid to pass from one to the other.

[0005] The pipes are usually insulated in order to prevent loss of heat during the transit of the heat carrier fluid, which is usually water, oil or the like.

[0006] For water radiators, a number of solutions are known.

[0007] A first technical solution is described in EP2428748B1 (filed on 12 March 2002 by Christel König) and entails the use of numerous tubular elements assembled at the base of the radiator by way of threaded connections and welding.

[0008] A delivery pipe and a return pipe ensure the circulation of the working fluid through the collection and heating channels of the heating plates of the radiator.

[0009] A technical solution, described in EP1249285B1 (filed on 26 July 2011 by Roger Grauls), teaches the use of a single T-connector, which enables the fluid to circulate both into and out of the radiator.

[0010] Such known devices are not devoid of drawbacks.

[0011] In the case of the first technical solution described above, the system of pipes in fact requires a high number of components, from which difficulties with mounting and / or assembly ensue, and also considerable costs and times needed to produce such components.

[0012] The technical solution described in the second patent mentioned above, on the other hand, although considerably reducing the number of components necessary to establish the circulation route of the fluid, introduces an additional problem which is linked to the complexity involved in providing the connector.

[0013] The T-connector is in fact made via numerous mechanical processes, including extrusion, drilling, welding and / or drawing, in order to obtain a series of separate channels for the inflow and outflow of the heat carrier fluid inside a same component with reduced dimensions.

[0014] The aim of the present invention is to provide a radiator that is capable of improving the prior art in one or more of the above-mentioned aspects.

[0015] Within this aim, an object of the invention is to simplify the transfer of the heat carrier fluid from the delivery and return pipes (located on the wall to which the radiator is to be fixed) to the radiant plates and vice versa, with respect to similar, conventional radiators.

[0016] Another object of the invention is to provide a radiator that has a smaller number of elements with respect to similar, conventional radiators, in this manner obtaining a reduction in the mounting and / or assembly times of the radiator.

[0017] An additional object is to obtain a product that is relatively easy to implement and at low cost, given the decrease in the production times and costs that ensue from simplifying the constructive complexity and the reduction in the number of elements necessary for the transfer of the working fluid.

[0018] A still further object of the present invention is to overcome the drawbacks of the prior art in a manner that is alternative to any existing solutions.

[0019] This aim and these and other objects which will become more apparent hereinafter are achieved by a radiator that comprises: at least two radiant plates in fluidic communication, comprising: at least one first plate, at least one second plate, at least one element for fluidic communication between said at least two plates, at least two connectors comprising: at least one first connector for the outflow of a working fluid, at least one second connector for the inflow of said working fluid, said radiator being characterized in that said at least one first connector is connected to said at least one first plate and said at least one second connector is connected to said at least one second plate.

[0020] Further characteristics and advantages of the invention will become better apparent from the detailed description that follows of a preferred, but not exclusive, embodiment of the radiator according to the invention, which is illustrated by way of non-limiting example in the accompanying drawings wherein: Figure 1 is an overall perspective view of a first embodiment of the radiator, according to the invention; Figure 2 is a partial cross-sectional view of the radiator of Figure 1; Figure 3 is an overall perspective view of a second embodiment of the radiator, according to the invention; Figure 4 is an overall perspective view of a third embodiment of the radiator, according to the invention.

[0021] With reference to Figure 1, the radiator according to the invention, in a first embodiment, is generally designated by the reference numeral 10 and comprises: two radiant plates in fluidic communication, comprising: a first plate 2a, a second plate 2b, two elements 90, 150 for fluidic communication between the two plates 2a, 2b, two connectors comprising: a first connector 3a for the outflow of a working fluid, a second connector 3b for the inflow of the working fluid.

[0022] Such radiant plates 2a, 2b are arranged parallel to each other, have a longitudinal and planar extension, and are made for example of steel and / or aluminum and / or cast iron.

[0023] The radiant plates 2a, 2b have longitudinal edges, respectively a first longitudinal edge 16a, belonging to the first plate 2a, and a second longitudinal edge 16b, belonging to the second plate 2b, which are mutually parallel and belong to a same plane which is perpendicular to the plane of arrangement of the plates 2a, 2b.

[0024] The radiant plates 2a, 2b are in fluidic communication by virtue of the elements 90, 150.

[0025] Such elements 90, 150 comprise a conduit 91, 151 with its axis substantially perpendicular to the plane of arrangement of such plates 2a, 2b. Such elements 90, 150 can also have an inlet constituted by a portion 92, 152 perpendicular to the conduit 91, 151 and with its axis substantially parallel to the axis of longitudinal extension of the plates.

[0026] The radiator 10 is characterized in that the first connector 3a is connected to the first plate 2a and the second connector 3b is connected to the second plate 2b.

[0027] Advantageously, such connectors 3a, 3b, are provided in the form of L-shaped pipes, which extend from the radiant plates in the opposite direction to the plate to which they are fixed and partially occupying the internal bulk of the radiator 10.

[0028] The connectors 3a, 3b have: a first portion 20, 22, circular in cross-section, which is threaded internally for the connection of the plumbing system (not shown in the figures), a second portion 21, 23, also circular in cross-section, which is not threaded and is perpendicular to the first portion 20, 22, for connection to the radiant plates 2a, 2b.

[0029] Such connectors 3a, 3b are made, for example, of copper and define a return connector 3a and a delivery connector 3b.

[0030] In this embodiment, furthermore, such radiant plates 2a, 2b define, in the configuration for use, a rear plate 2a, arranged closer to the wall to which the radiator 10 (not shown) is to be fixed, and a front plate 2b, which is spaced further away from the wall.

[0031] Conveniently, both of the connectors 3a, 3b have: the first portion 20, 22, which extends in a direction identified by an axis which is substantially perpendicular to the axis of longitudinal extension of the plates 2a, 2b, and lying on the same plane, the second portion 21, 23, which extends in a direction identified by an axis which is substantially perpendicular to the plane of arrangement of the plates 2a, 2b.

[0032] Moreover, advantageously, the first connector 3a is fixed proximate to the first longitudinal edge 16a, in a substantially central position of the first longitudinal edge 16a, while the second connector 3b is fixed proximate to the second longitudinal edge 16b, in a substantially central position of the second longitudinal edge 16b.

[0033] The embodiment just described is defined as "two-way", in that it has an inflow route and an outflow route for the heat carrier fluid into / out of the radiant plates.

[0034] Figure 2 partially shows the transverse cross-section of the radiator 10 taken along a plane parallel to the longitudinal axis of the plates 2a, 2b, and perpendicular to the plane of arrangement of the plates 2a, 2b.

[0035] The radiator comprises means 15a, 15b for connecting the connectors 3a, 3b to the plates 2a, 2b.

[0036] Advantageously, such connectors 3a, 3b extend toward the central zone of the radiator 10 for a distance such that the center of the circular cross-section of the first portion 20, 22 of the connector 3a, 3b lies on a plane that is substantially median with respect to the two radiant plates 2a, 2b and is substantially equidistant from them.

[0037] By contrast, another embodiment of the "two-way" radiator according to the invention is termed "four-way" because it involves the use of two connectors for the inflow and two connectors for the outflow of the fluid into / out of the radiant plates.

[0038] This embodiment is shown in Figure 3.

[0039] With reference to the figure 3, the radiator according to the invention, in this second embodiment, is generally designated by the reference numeral 110 and comprises: two radiant plates in fluidic communication, comprising: a first plate 7a, a second plate 7b, two elements 93, 153 for fluidic communication between the at least two plates 7a, 7b, four connectors comprising: a first central connector 4a for the outflow of a working fluid, a second central connector 4b for the inflow of the working fluid, a first lateral connector 5a for the outflow of the working fluid, a second lateral connector 5b for the inflow of the working fluid, a plurality of blind plugs 6 for closing some of these connectors 4a, 4b, 5a, 5b.

[0040] Such radiant plates 7a, 7b are arranged parallel to each other, have a longitudinal and planar extension, and are made for example of steel and / or aluminum and / or cast iron.

[0041] The radiant plates have longitudinal edges, respectively a first longitudinal edge 17a, belonging to the first plate 7a, and a second longitudinal edge 17b, belonging to the second plate 7b, which are mutually parallel and belong to a same plane which is perpendicular to the plane of arrangement of the plates 7a, 7b.

[0042] The radiant plates 7a, 7b are in fluidic communication by virtue of the elements 93, 153.

[0043] Such elements 93, 153 comprise a conduit 94, 154 with its axis substantially perpendicular to the plane of arrangement of such plates 7a, 7b. Such elements 93, 153 can also have an inlet constituted by a portion 95, 155 perpendicular to the conduit 94, 154 and with its axis substantially parallel to the axis of longitudinal extension of the plates.

[0044] The radiator 110 comprises the first central connector 4a and the first lateral connector 5a that are connected to the first plate 7a, and the second central connector 4b and the second lateral connector 5b that are connected to the second plate 7b.

[0045] Such first central connector 4a, second central connector 4b and second lateral connector 5b are made in the form of L-shaped pipes.

[0046] Such first central connector 4a, second central connector 4b and second lateral connector 5b have: a first portion 30, 32, 42, circular in cross-section, which is threaded internally for the connection of the plumbing system (not shown in the figures), a second portion 31, 33, 43, also circular in cross-section, which is not threaded and is perpendicular to the first portion 30, 32, 42, for connection to the radiant plates 7a, 7b.

[0047] Such first lateral connector 5a is advantageously a three-way connector and has: a first portion 40, circular in cross-section, which is threaded internally for the connection of the plumbing system (not shown in the figures), a second portion 41, also circular in cross-section, which is not threaded and is perpendicular to the first portion 40, for connection to the radiant plates 7a, 7b, a third portion 80, also circular in cross-section, which is threaded internally and perpendicular to the first portion 40 and to the second portion 41, for an optional additional connection to the plumbing system (not shown in the figures).

[0048] Advantageously, such connectors 4a, 4b, 5a, 5b have: the first portion 30, 32, 40, 42, which extends in a direction identified by an axis which is substantially perpendicular to the axis of longitudinal extension of the plates 7a, 7b, and lying on the same plane, the second portion 31, 33, 41, 43, which extends in a direction identified by an axis which is substantially perpendicular to the plane of arrangement of the plates 7a, 7b.

[0049] Conveniently, such first lateral connector 5a has the third portion 80, which extends in a direction perpendicular to both of the directions identified respectively by the first portion 40 and by the second portion 41.

[0050] Such connectors 4a, 4b, 5a, 5b advantageously extend from the radiant plates 7a, 7b in the opposite direction to the plate to which they are fixed and partially occupying the internal bulk of the radiator 110.

[0051] Such connectors 4a, 4b, 5a, 5b are made, for example, of copper and are further subdivided into return connectors 4a, 5a, respectively a first return connector 4a and a second return connector 5a, and delivery connectors 4b, 5b, respectively a first delivery connector 4b and a second delivery connector 5b.

[0052] In this embodiment, furthermore, such radiant plates 7a, 7b define, in the configuration for use, a rear plate 7a, arranged closer to the wall to which the radiator 110 (not shown) is to be fixed, and a front plate 7b, which is spaced further away from the wall.

[0053] Advantageously, the first central connector 4a is fixed proximate to the first longitudinal edge 17a, in a substantially central position of the first longitudinal edge 17a, while the second central connector 4b is fixed proximate to the second longitudinal edge 17b, in a substantially central position of the second longitudinal edge 17b.

[0054] Moreover, advantageously, the first lateral connector 5a is fixed proximate to / at one of the two corners of the first plate 7a, proximate to the first longitudinal edge 17a, and the second lateral connector 5b is fixed adjacent to the first lateral connector 5a along the second longitudinal edge 17b of the second plate 7b, on the plate 7b.

[0055] Conveniently, similarly to the first embodiment, such connectors 4a, 4b, 5a, 5b extend toward the central zone of the radiator 110 for a distance such that the center of the circular cross-section of the first portion 30, 32, 40, 42 of the connectors 4a, 4b, 5a, 5b and the center of the circular cross-section of the third portion 80 of the first lateral connector 5a lie on a plane that is substantially median with respect to the two radiant plates 7a, 7b, and is equidistant from them.

[0056] Advantageously, similarly to the first embodiment, the radiator 110 has means for connection for fixing the connectors to the two plates 7a, 7b.

[0057] Such plurality of blind plugs 6 for closing is made, for example, of copper and is used to close the inlets and the outlets that are not used during the operation of the device.

[0058] By contrast, a third embodiment of the radiator according to the invention is termed "six-way" and hence involves the use of three connectors for the inflow and three connectors for the outflow of the fluid into / out of the radiant plates. This embodiment is shown in Figure 4.

[0059] With reference to the figure 4, the radiator according to the invention, in this third embodiment, is generally designated by the reference numeral 210 and comprises: two radiant plates in fluidic communication, comprising: a first plate 9a, a second plate 9b, two elements 96, 156 for fluidic communication between the at least two plates 9a, 9b, six connectors comprising: a first central connector 12a for the outflow of a working fluid, a second central connector 12b for the inflow of the working fluid, two first lateral connectors 8a, 8b, respectively a first first lateral connector 8a for the outflow of the working fluid and a second first lateral connector 8b for the inflow of the working fluid, two second lateral connectors 11a, 11b, respectively a first second lateral connector 11a for the outflow of the working fluid and a second second lateral connector 1 1b for the inflow of the working fluid, a plurality of blind plugs 13 for closing some of these connectors 8a, 8b, 11a, 11b, 12a, 12b.

[0060] Such radiant plates 9a, 9b are arranged parallel to each other, have a longitudinal and planar extension, and are made for example of steel and / or aluminum and / or cast iron.

[0061] The radiant plates 9a, 9b have longitudinal edges, respectively a first longitudinal edge 18a, belonging to the first plate 9a, and a second longitudinal edge 18b, belonging to the second plate 9b, which are mutually parallel and belong to a same plane which is perpendicular to the plane of arrangement of the plates 9a, 9b.

[0062] The radiant plates 9a, 9b are in fluidic communication by virtue of the elements 96, 156.

[0063] Such elements 96, 156 comprise a conduit 97, 157 with its axis substantially perpendicular to the plane of arrangement of such plates 9a, 9b. Such elements 96, 156 can also have an inlet constituted by a portion 98, 158 perpendicular to the conduit 97, 157 and with its axis substantially parallel to the axis of longitudinal extension of the plates.

[0064] The radiator 210 is characterized in that the first central connector 12a, the first first lateral connector 8a and the first second lateral connector 11a are connected to the first plate 9a, and the second central connector 12b, the second first lateral connector 8b and the second second lateral connector 1 1b are connected to the second plate 9b.

[0065] Such first central connector 12a, second central connector 12b, first first lateral connector 8a and second second lateral connector 11b are made in the form of L-shaped pipes.

[0066] Such first central connector 12a, second central connector 12b, first first lateral connector 8a and second second lateral connector 11b have: a first portion 50, 52, 70, 62, circular in cross-section, which is threaded internally for the connection of the plumbing system (not shown in the figures), a second portion 51, 53, 71, 63, also circular in cross-section, which is not threaded and is perpendicular to the first portion 50, 52, 70, 62, for connection to the radiant plates 9a, 9b.

[0067] Such second first lateral connector 8b and first second lateral connector 11a are advantageously three-way connectors and in fact they have: a first portion 72, 60, circular in cross-section, which is threaded internally for the connection of the plumbing system (not shown in the figures), a second portion 73, 61, also circular in cross-section, which is not threaded and is perpendicular to the first portion 72, 60, for connection to the radiant plates 9a, 9b, a third portion 82, 81, also circular in cross-section, which is threaded internally and perpendicular to the first portion 72, 60 and to the second portion 73, 61, for an optional additional connection to the plumbing system (not shown in the figures).

[0068] Advantageously, such connectors 8a, 8b, 11a, 11b, 12a, 12b have: the first portion 70, 72, 60, 62, 50, 52, which extends in a direction identified by an axis which is substantially perpendicular to the axis of longitudinal extension of the plates 9a, 9b, and lying on the same plane, the second portion 71, 73, 61, 63, 51, 53, which extends in a direction that is substantially perpendicular to the plane of arrangement of the plates 9a, 9b.

[0069] Conveniently, such second first lateral connector 8b and first second lateral connector 11a have the third portion 82, 81, which extends in a direction perpendicular to both of the directions identified respectively by the first portion 72, 60 and by the second portion 73, 61.

[0070] Such connectors 8a, 8b, 11a, 11b, 12a, 12b advantageously extend from the radiant plates 9a, 9b in the opposite direction to the plate to which they are fixed and partially occupying the internal bulk of the radiator 210.

[0071] Such connectors 8a, 8b, 11a, 11b, 12a, 12b are made, for example, of copper and are further subdivided into return connectors 8a, 11a, 12a, respectively a first return connector 8a, a second return connector 11a and a third return connector 12a, and delivery connectors 8b, 11b, 12b, respectively a first delivery connector 8b, a second delivery connector 11b and a third delivery connector 12b.

[0072] In this embodiment, furthermore, such radiant plates 9a, 9b define, in the configuration for use, a rear plate 9a, arranged closer to the wall to which the radiator 210 (not shown) is to be fixed, and a front plate 9b, which is spaced further away from the wall.

[0073] Advantageously, the first central connector 12a is fixed proximate to the first longitudinal edge 18a, in a substantially central position of the first longitudinal edge 18a, while the second central connector 12b is fixed proximate to the second longitudinal edge 18b, in a substantially central position of the second longitudinal edge 18b.

[0074] Conveniently, the first second lateral connector 11a is fixed proximate to / at a first corner A of the first plate 9a, proximate to the first longitudinal edge 18a, and the second second lateral connector 11b is fixed adjacent to the first second lateral connector 11a along the second longitudinal edge 18b of the second plate 9b, on the plate 9b.

[0075] Moreover, advantageously, the second first lateral connector 8b is fixed to the second plate 9b, proximate to the second longitudinal edge 18b, proximate to / at the first corner B of the second plate 9b corresponding to the second corner C of the first plate 9a, along the first edge 18a, opposite to the first corner A of the first plate 9a, and the first first lateral connector 8a is fixed adjacent to the second first lateral connector 8b along the first longitudinal edge 18a of the first plate 9a, on the plate 9a.

[0076] Conveniently, similarly to the first embodiment, such connectors 8a, 8b, 1 1a, 11b, 12a, 12b extend toward the central zone of the radiator 210 for a distance such that the center of the circular cross-section of the first portion 70, 72, 60, 62, 50, 52 of the connectors 8a, 8b, 11a, 11b, 12a, 12b and the center of the circular cross-section of the third portion 82, 81 of the second first lateral connector 8b and of the first second lateral connector 11a lie on a plane that is substantially median with respect to the two radiant plates 9a, 9b, and is equidistant from them.

[0077] Advantageously, similarly to the first embodiment, the radiator 210 has means for connection for fixing the connectors to the two plates 9a, 9b.

[0078] Such plurality of blind plugs 13 for closing is made, for example, of copper and is used to close the inlets and the outlets that are not used during the operation of the device.

[0079] In practice it has been found that the invention fully achieves the intended aim and objects.

[0080] In particular, with the invention a radiator has been devised that has a system of pipes for conveying the heat carrier fluid that is highly advantageous from the point of view of mounting and / or assembly.

[0081] Moreover, with the invention a radiator has been provided that makes it possible to reduce production costs and times by virtue of the reduced number of tubular elements used and the simplicity of construction.

[0082] The invention thus conceived is susceptible of numerous modifications and variations, all of which are within the scope of the appended claims. Moreover, all the details may be substituted by other, technically equivalent elements.

[0083] In practice the materials employed, provided they are compatible with the specific use, and the contingent dimensions and shapes, may be any according to requirements and to the state of the art.

[0084] The disclosures in Italian Patent Application No. 102024000002578 from which this application claims priority are incorporated herein by reference.

[0085] Where technical features mentioned in any claim are followed by reference signs, such reference signs have been inserted for the sole purpose of increasing the intelligibility of the claims and accordingly such reference signs do not have any limiting effect on the interpretation of each element identified by way of example by such reference signs.

Claims

1. A radiator (10, 110, 210) comprising: - at least two radiant plates in fluidic communication, comprising: - at least one first plate (2a, 7a, 9a), - at least one second plate (2b, 7b, 9b), - at least one element (90, 150, 93, 153, 96, 156) for fluidic communication between said at least two plates (2a, 2b, 7a, 7b, 9a, 9b), - at least two connectors comprising: - at least one first connector (3a, 4a, 5a, 8a, 11a, 12a) for the outflow of a working fluid, - at least one second connector (3b, 4b, 5b, 8b, 11b, 12b) for the inflow of said working fluid, said radiator (10, 110, 210) being characterized in that said at least one first connector (3a, 4a, 5a, 8a, 11a, 12a) is connected to said at least one first plate (2a, 7a, 9a) and said at least one second connector (3b, 4b, 5b, 8b, 11b, 12b) is connected to said at least one second plate (2b, 7b, 9b).

2. The radiator (10, 110, 210) according to claim 1, characterized in that said at least two radiant plates (2a, 2b, 7a, 7b, 9a, 9b) are arranged parallel to each other and have a longitudinal and planar extension.

3. The radiator (10, 110, 210), according to any one of the preceding claims, characterized in that said at least two connectors (3a, 3b, 4a, 4b, 5a, 5b, 8a, 8b, 11a, 11b, 12a, 12b) comprise a threaded first portion (20, 22, 30, 32, 40, 42, 70, 72, 60, 62, 50, 52) and a second portion (21, 23, 31, 33, 41, 43, 71, 73, 61, 63, 51, 53) which is perpendicular to said first portion (20, 22, 30, 32, 40, 42, 70, 72, 60, 62, 50, 52).

4. The radiator (10, 110, 210) according to claim 3, characterized in that said threaded first portion (20, 22, 30, 32, 40, 42, 70, 72, 60, 62, 50, 52) extends in a direction identified by an axis which is substantially perpendicular to the axis of longitudinal extension of said at least two plates (2a, 2b, 7a, 7b, 9a, 9b) and lying on the same plane, and in that said second portion extends in a direction identified by an axis which is substantially perpendicular to the plane of arrangement of said radiant plates (2a, 2b, 7a, 7b, 9a, 9b).

5. The radiator (10, 110, 210) according to claim 1, characterized in that said at least two connectors (3a, 3b, 4a, 4b, 5a, 5b, 8a, 8b, 11a, 11b, 12a, 12b) extend from said at least two radiant plates (2a, 2b, 7a, 7b, 9a, 9b) in a direction which is opposite to the plate to which they are fixed and partially occupying the internal volume of said radiator (10, 110, 210).

6. The radiator (10, 110, 210) according to any one of the preceding claims, characterized in that said at least two radiant plates (2a, 2b, 7a, 7b, 9a, 9b) comprise longitudinal edges, respectively, a first longitudinal edge (16a, 17a, 18a) belonging to said at least one first plate (2a, 7a, 9a) and a second longitudinal edge (16b, 17b, 18b) belonging to said at least one second plate (2b, 7b, 9b), said longitudinal edges (16a, 16b, 17a, 17b, 18a, 18b) belonging to a same plane which is perpendicular to the plane of arrangement of said at least two plates (2a, 2b, 7a, 7b, 9a, 9b).

7. The radiator (10, 110, 210) according to any one of the preceding claims, characterized in that said at least two connectors (3a, 3b, 4a, 4b, 5a, 5b, 8a, 8b, 11a, 11b, 12a, 12b) comprise two central connectors (3a, 3b), respectively a first central connector (3a) and a second central connector (3b).

8. The radiator (10, 110, 210) according to any one of the preceding claims, characterized in that each of said central connectors (3a, 3b, 4a, 4b, 12a, 12b) is fixed proximate to a respective one of said longitudinal edges (16a, 16b, 17a, 17b, 18a, 18b), in a substantially central position of said longitudinal edges (16a, 16b, 17a, 17b, 18a, 18b).

9. The radiator (110, 210) according to any one of the preceding claims, characterized in that said at least two connectors (4a, 4b, 5a, 5b, 8a, 8b, 11a, 11b, 12a, 12b) comprise at least four connectors which comprise in turn said two central connectors (4a, 4b, 12a, 12b), and at least two lateral connectors (5a, 5b, 8a, 8b, 11a, 11b), respectively at least one first lateral connector (5a, 8a, 11a) and at least one second lateral connector (5b, 8b, 11b).

10. The radiator (210) according to one or more of the preceding claims, characterized in that said at least two connectors (8a, 8b, 11a, 11b, 12a, 12b) comprise six connectors, which comprise in turn: - said central connectors (12a, 12b), - two first lateral connectors (8a, 8b), respectively a first first lateral connector (8a) and a second first lateral connector (8b), - two second lateral connectors (11a, 11b), respectively a first second lateral connector (11a) and a second second lateral connector (1 1b).

11. The radiator (10, 110, 210) according to one or more of the preceding claims, characterized in that at least some of said at least two connectors (3a, 3b, 4a, 4b, 5a, 5b, 8a, 8b, 11a, 11b, 12a, 12b) comprise a threaded third portion (80, 81, 82) which is perpendicular to said first portion (20, 22, 30, 32, 40, 42, 70, 72, 60, 62, 50, 52) and to said second portion (21, 23, 31, 33, 41, 43, 71, 73, 61, 63, 51, 53).

12. The radiator (10, 110, 210) according to any one of the preceding claims, characterized in that it comprises a plurality of blind plugs (6, 13) for closing some of said at least two connectors (3a, 3b, 4a, 4b, 5a, 5b, 8a, 8b, 11a, 11b, 12a, 12b).

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