EA037961B1 - Heating device - Google Patents

Abstract

A heating device (1) has a body (2) made of aluminium or an aluminium alloy, comprising an inner chamber (3) in which a heating liquid circulates; connections (16) communicating with the chamber (3) and extending from the body (2); and a first heat exchange plate (4), having an outer face (9) facing in use the space to heat and defining a first heat exchange surface (10) of the device (1), and an inner face (8), opposite to the outer face (9) and facing the chamber (3); the plate (4) extends directly from the chamber (3).

Description

The technical field to which the invention relates

The present invention relates to a heating device, in particular of the circulating liquid type.

Background of the invention

A known room heating system consists of radiators in which a heating fluid (usually hot water) circulates.

The radiators used in these systems can be made from different metals and are often formed from batteries of radiator sections that are made separately and then connected together.

A section of a conventional radiator has a substantially tubular body containing an internal chamber through which water flows (water chamber) and hydraulic connections for connection to other similar radiator sections and / or to a hydraulic circuit located at opposite ends of the section, two opposite baffles extend from the water chamber along the axial plane of the section, supporting the front plate and the back plate, respectively; a plurality of heat exchange fins extend from the tubular body.

Basically, it is assumed that radiators containing such sections are completely satisfactory and have reached the current limitations of their efficiency and cannot be further improved, or at least only minimally, especially in terms of their power density per unit weight, i.e. .e. the relationship between the heat output radiated by a radiator section and transmitted to the environment (measured according to specific standards, for example EN 442) and the weight of the section (which is a fundamental parameter that directly influences the cost price).

However, the inventors of the subject invention have found that with the prior art there is still substantial room for improvement in terms of design and thermal efficiency.

On the other hand, it is generally accepted that a possible solution to the problem of increasing the power of the radiator is to increase the amount of water circulating in the radiator.

In contrast, the inventors of the subject invention have found that the water used in heat exchange is in fact only water that surrounds the walls of the water box, so that an increase in water content (i.e., volume of the water box) does not necessarily lead to an increase in heat output.

Disclosure of invention

Therefore, one object of the present invention is to provide a heating device, in particular made of aluminum, which can also be used instead of known radiators or radiator sections, and which has high thermal efficiency, while at the same time has good mechanical resistance and resistance to internal pressure.

Thus, the present invention relates to a heating device as defined in its key terms in claim 1 and in its secondary and preferred features in the dependent claims.

The heating device according to the invention is particularly effective, in particular, it makes full use of the heat of the heating liquid and at the same time provides a suitable resistance from a structural point of view.

Thus, the heating device according to the invention overcomes the technical problem associated with providing a highly efficient and powerful heating device.

Compared to the traditional approach of simply increasing the amount of water in accordance with the invention, the technical problem has been overcome due to the different distribution of the heating liquid, which is supplied close to all available heat exchange surfaces, thus, the design of the water chamber differs relative to the prior art and has thus been increased. that it occupies practically the entire available area between the front side and the rear side of the device, so that the heating liquid directly surrounds the main (largest) heat exchange surfaces of the said device.

The inventors of the subject invention realized that in order to increase power and overall efficiency, rather than increasing the amount of water, water must be completely distributed over all available heat transfer surfaces.

Basically, in accordance with the invention, the water chamber is a single chamber that essentially extends to directly wet, at least partially, a heat transfer plate (usually the front plate of the device) containing a heat exchange surface directly facing the environment to be heating.

Thus, the heat exchange surface of the plate fully utilizes the heat of the heating fluid.

Preferably, the water chamber extends from the front plate to the back plate of the device.

Basically, the water box directly wets at least a portion of the front plate and / or back plate of the device.

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A device according to the invention which has a specific geometry, i. E. due to its essentially characteristic disadvantages from a mechanical point of view, it is made of aluminum (this term also refers to aluminum alloys) and, in particular, aluminum obtained by means of an extrusion or injection molding process to provide the necessary resistance of materials.

Brief Description of Drawings

Additional characteristics and advantages of the present invention will become apparent from the description of the following non-limiting embodiments with reference to the accompanying drawings, in which: FIG. 1 is a perspective view of a first embodiment of a heating device according to the invention;

fig. 2 is a side view of the device of FIG. one;

fig. 3 and 4 are two sectional views along the dashed lines W-W and IV-IV, respectively, in FIG. 2;

fig. 5 and 6 are sectional views (identical to the sectional view of FIG. 3) corresponding alternative embodiments of the heating device of FIG. 1-4;

fig. 7 is a perspective view of a second embodiment of a heating device according to the invention;

fig. 8 and 9 are, respectively, a longitudinal sectional view and a cross-sectional view of the heating device of FIG. 7;

fig. 10 and 11 are sectional views of other alternative embodiments of the invention.

Best Mode for Carrying Out the Invention

FIG. 1 and 2 depict a heating device designated generally by reference numeral 1 (for heating environments inside buildings), of the type with circulation of a liquid (eg hot water).

The device 1 comprises a housing 2 made of aluminum (the aforementioned term also containing aluminum alloys, i.e. alloys containing aluminum), for example aluminum obtained by extrusion (i.e. made of aluminum or an alloy containing aluminum obtained by an extrusion process) or by injection molding (i.e. made of aluminum or an alloy containing aluminum obtained by an injection molding process).

In addition, as shown in FIG. 3 and 4, the body 2 is a hollow body and contains a single inner chamber 3 (water chamber) in which a heating liquid (eg hot water) circulates during use.

The housing 2 comprises a front heat transfer plate 4 and a rear heat transfer plate 5 disposed at respective opposite ends of the housing 2 (specifically referring to the normal position of use of the device 1, front end and rear end) and substantially facing each other and connected at respective peripheral edges 6, which together form a closed peripheral edge 7 of the chamber 3.

In the example shown in FIG. 1-4, the plates 4, 5 (and each of the edges 6 and also the edge 7) have a substantially quadrangular shape (being, for example, substantially square or rectangular), but it will be understood that the plates 4, 5 (and the edges 6 and edge 7) may be of other shapes.

The front plate 4 has an inner side 8 facing the chamber 3 and moistened with the heating liquid, and which thus exchanges heat with the heating liquid in the chamber 3 (receiving the heat of the heating liquid), and the outer side 9 opposite the inner side 8, which forms the first heat exchange surface 10, in particular the main front heat exchange surface of the device 1, which, in use, faces the environment to be heated and which exchanges heat with air in the environment in which the device 1 is installed (releasing heat into the air), in addition to generating heat into the environment through radiation.

Likewise, the back plate 5 has an inner side 11 facing the chamber 3 and wetted by the heating liquid and which thus exchanges heat with the heating liquid in the chamber 3 (receiving the heat of the heating liquid), and the outer side 12 opposite the inner side 11, forming a second heat exchange surface 13 facing, in use, the support wall W, on which the device 1 is fixed by means of fasteners (of a type known and not illustrated herein for simplicity), and which exchanges heat with air in the environment in which the device is installed 1 (releasing heat into the air).

The chamber 3 extends along the longitudinal axis A, vertical in use, and the transverse axis B, horizontal in use, forming, respectively, the height and width of the chamber 3, and along the third axis C, perpendicular to the longitudinal axis A and to the transverse axis B, and forming chamber thickness 3.

The camera 3 is delimited from the front by the front plate 4 and specifically by the inner side 8 of the front plate 4 facing the camera 3 and from the rear by the rear plate 5 and specifically by the inner side 11 of the rear plate 5 facing the inner side 8 of the front plate 4.

Thus, the thickness of the chamber 3 is defined as the distance between the front plate 4 and the back plate 5, and specifically between the inner side 8 of the front plate 4 and the inner side 11 of the rear plate 5.

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The plates 4, 5 need not be flat and parallel as shown in FIG. 1-4, and can have different shapes and be located in different ways, for example, one or both plates 4, 5 can be curved, corrugated, etc., and / or plates 4, 5 can be inclined towards each other. The chamber 3 can thus have a variable (different) thickness (measured parallel to the C axis) along the longitudinal axis A and / or along the transverse axis B.

Preferably, as shown, the chamber 3 is a narrow chamber with a thickness that is less (in at least one or more parts of the chamber 3, if not the entire length of the chamber 3) relative to other dimensions (height and width) and relative to at least one of height and width.

In particular, in the illustrated embodiment (although not necessarily), the chamber 3 has a generally flattened shape and preferably extends along the longitudinal axis A, vertical in use, and the transverse axis B, horizontal in use, forming, respectively, the height and width of the chamber 3. and the chamber 3 has a thickness measured perpendicular to the longitudinal axis A (vertical in use) and transverse axis B (horizontal in use), i. e. along the C axis, perpendicular to the longitudinal axis A and to the transverse axis B, which is significantly less than the height and width.

In the example shown in FIG. 1-4, the chamber 3 essentially extends over the entire front plate 4 with the exception of the peripheral edge 6 of the front plate 4 connected to the corresponding peripheral edge 6 of the rear plate 5.

In particular, the chamber 3 extends over at least 60% of the front plate 4, at least 60% of the surface of the inner side 8 facing the camera 3, of the front plate 4, thus facing the camera 3.

In other words, the chamber 3 occupies at least 60% of the inner side 8 of the front plate 4, i. E. chamber 3 has a contact surface with the inner side 8 of the front plate 4 (meaning the surface of the chamber 3 delimited on the inner side 8 of the front plate 4 from the peripheral edge 7 and thus excluding any areas within the chamber 3 occupied by internal elements such as spacers , ribs, structural reinforcements, flow conveyors, etc., which will be described below), which is at least 60% of the total surface of the inner side 8 of the front plate 4.

In other embodiments, the implementation of the chamber 3 extends at least 65%, or at least 70%, or at least 75%, or at least 80%, or at least 85%, or at least 90% of the surface of the inner side 8 of the front plate 4.

The plate 4 extends directly, at least in part, from the chamber 3 and comprises at least a wall 14 which directly delimits the chamber 3 and, in use, comes into direct contact with the heating liquid contained in the chamber 3.

In particular, the inner side 8 of the plate 4 comprises at least a surface 15 that directly delimits the chamber 3.

In the embodiment shown in FIG. 1-4, the chamber 3 extends between two plates 4, 5 and comes into direct contact with at least the corresponding surfaces of both plates 4, 5.

Both plates 4, 5 extend directly, at least partially, from the chamber 3 and comprise at least walls 14 that directly delimit the chamber 3 and, in use, come into direct contact with the heating liquid contained in the chamber 3 through corresponding surfaces fifteen.

The body 2 additionally contains connections 16 extending from one or both plates 4, 5 and communicating with the chamber 3.

In the example of FIG. 1-4, in particular, the joints 16 protrude from the rear plate 5 and in particular from the outer side 12 of the rear plate 5 and are substantially perpendicular to the rear plate 5 and to the outer side 12 of the rear plate 5.

In the example shown, the device 1 has four connections 16 located at the corresponding corners of the chamber 3. However, it will be appreciated that the housing 2 may contain a different number of connections 16, also located in other positions, not necessarily in the corners of the chamber 3. Preferably, but not necessarily, the connections 16 are located along the peripheral edge 7 of the chamber 3.

The connections 16 are formed by corresponding bushings, for example, but not necessarily, essentially cylindrical (but the bushings can also have a different shape), and their purpose is to connect the device 1 to an external hydraulic circuit (not shown) and / or connect the device 1 to other identical devices for the formation of a modular system.

Connections 16 that are not used to connect device 1 to another identical device to form a modular system or to connect device 1 to an external hydraulic circuit are closed with plugs (not shown).

Basically, the chamber 3 has at least one inlet 16a and one outlet 16b formed by respective connections 16.

In the example shown, the front plate 4 and the back plate 5 are substantially flat and parallel. It is understood that the front plate 4 and / or the back plate 5, like their sides, can have a different shape, for example, curved, corrugated, etc.

The outer side 9 of the front plate 4 is, for example, substantially smooth.

In the embodiment shown in FIG. 1-4, the back plate 5 supports a plurality of heat exchange fins 17 that extend outside the chamber 3 from the back plate 5 and specifically from the outside 12 of the back plate 5.

In the non-limiting example shown, the ribs 17 are substantially perpendicular to the outside 12 of the back plate 5 and parallel to each other and to the longitudinal axis A (vertical in use). It will be understood that the ribs 17 can be formed and arranged in different ways, i. E. the ribs 17 can have a different shape, they can be oriented in different ways, they are located differently relative to each other compared to the ribs shown by way of example only.

Preferably, as shown in FIG. 1-4, all the ribs 17 extend directly from the chamber 3 and extend directly from the wet wall 18 of the chamber 3, in this case formed by the back plate 5, so that all the ribs 17 are so-called wet ribs. All of the ribs 17 have a top edge 19 extending directly from the wet wall 18 of the chamber 3, which comes into direct contact with the heating fluid.

Preferably, the ribs 17 are integral with the wet wall 18 of the chamber 3 and thus the plate 5 from which they protrude to form a monolithic element therewith (i.e. the ribs are not supported by the back plate 5 or are not connected to the plate 5, but made directly with the plate 5, for example, during an extrusion or injection molding step).

The front plate 4 and the back plate 5 comprise or form respective main walls 24, 25 of the chamber 3 with respective inner surfaces 26, 27 facing the chamber 3 and wetted by the heating liquid contained in the chamber 3.

The term main walls refers to the walls of the chamber 3 (i.e., the walls that define the chamber 3 and come into direct contact with the heating liquid contained in the chamber 3) with a large increase in surface (area) compared to every other wall of the chamber 3.

Thus, the front plate 4 and the back plate 5 comprise or form the main walls 24, 25 of the chamber 3, and in particular the front wall 24 which, in use, faces the environment to be heated, and the rear wall 25, which, in use, faces the wall W of the surrounding environment to be heated. The inner sides 8, 11 of the plates 4, 5 form (or contain) the inner surfaces 26, 27 of the main walls 24, 25.

Chamber 3 is delimited by two main walls 24, 25 facing each other and formed in the embodiment shown in FIG. 1-4, plates 4, 5, and a peripheral edge 7 connecting the main walls 24, 25 to each other, and has an increase (surface) that is less than each of the main walls 24, 25.

In the embodiment shown in FIG. 1-4, the main walls 24, 25 are substantially parallel to the main front heat transfer surface 10 of the device 1.

The front plate 4 and the rear plate 5, comprising the main walls 24, 25 of the chamber 3 and the corresponding peripheral edges 6 formed for connection to each other, are preferably formed from respective monolithic elements made, for example, of aluminum obtained by an injection molding process ... The two elements, which form two plates 4, 5, are then joined at respective peripheral edges 6 to form a mechanical and fluid-tight connection.

Preferably, the plates 4, 5 are connected by a thermoelectric fusion process carried out by circulating current through the respective contact portions of the elements to be connected to cause them to fusion locally without the use of welding material (as described in WO 2014/155295).

The plates 4, 5 can, however, be joined in other ways, for example, by means of mechanical joining methods (possibly with the insertion of gaskets), gluing, other types of welding (not necessarily electromagnetic), etc.

The peripheral edge 7 of the chamber 3 is formed by peripheral edges 6 contacting (aligned with each other) and connected to each other of the plates 4, 5. In the example shown in FIG. 1-4, the plates 4, 5 have substantially the same dimensions (the same dimensions) along the longitudinal axis A and the transverse axis B, and the edges 6 are substantially flush with each other (i.e., the edges 6 do not project laterally or laterally).

In other embodiments, as shown, for example, in FIG. 5 and 6, at least one of the plates 4, 5, for example plate 4 (front), comprises a peripheral frame 29 protruding outwardly beyond the peripheral edge 7 of the chamber 3, at least from a portion of the peripheral edge 7 of the chamber 3.

In other words, frame 29 is a peripheral portion (one of plates 4, 5 or both plates 4, 5) that extends more than 10 mm (or more than 15 mm or more than 20 mm) from camera 3 (from point closest to camera 3). Preferably, frame 29 is less than about 2 mm thick.

- 4 037961

In particular, the frame 29 is formed by the peripheral portion of the plate 4 (or plate 5) and extends from the peripheral edge 6 of the same plate 4 (or plate 5) and beyond the peripheral edge 6 of the same plate and is detached (separated) from the peripheral edge 6 of the other plate.

The purpose of the frame 29 is to further increase the specific power per unit weight of the device 1, in the area of the frame 29 the temperature of the air that surrounds the device 1 is lower, so that heat exchange is still efficiently carried out even with the heat exchange surface (frame 29), which is also at lower temperature compared to other surfaces of the device 1 (in particular, the walls 24, 25 of the chamber 3 and the ribs 17, all of which are in direct contact with the heating liquid in the chamber 3).

The frame 29 can protrude beyond the peripheral edge 7 of the chamber 3 (i.e., beyond the edge 6 of the plate 4 or plate 5) from all sides or from some sides only of the edge 7, i.e. plates 4 (or plates 5).

In other words, the frame 29 can protrude beyond the edge 7 along the longitudinal axis A from both sides or only from one side of the transverse axis B and along the transverse axis B from both sides, or only from one side of the longitudinal axis A.

The frame 29 can protrude evenly (i.e., by the same amount) from all sides of the edge 7 or differently from different sides of the edge 7.

The frame 29 may be substantially flat and parallel to the outside 9 of the plate 4 (or to the outside 12 of the plate 5) as shown in FIG. 6, or it can be formed differently, for example, bent, or inclined, or rounded relative to the outer side of the plate from which it projects (for example, the outer side 9 of the plate 4 or the outer side 12 of the plate 5) to the opposite plate, also with the possibility of providing the function closing the ribs 17 as shown in FIG. 6.

The frame 29 can also be bent, or inclined, or rounded relative to the outer side 9, 12 of the plate 4, 5, from which it projects, and not to the opposite plate, on the other side relative to the opposite plate with the possibility of passing from it or towards it.

It is understood that either of the plates 4, 5 may have a peripheral frame 29, and both plates 4, 5 may have corresponding peripheral frames 29 that extend from the respective peripheral edges 6 of the plates 4, 5 and are spaced and spaced apart from each other. each other, or connected to each other (to form a single double-thick frame).

Inside the chamber 3 there are transverse ribs 33, i.e. protrusions that extend between the front plate 4 and the back plate 5 (i.e. between the main walls 24, 25) and are integral with (firmly connected to a separate element or made as a separate element) the inner side 8 of the front plate 4 and with the inner side 11 of the back plate 5, i.e. with the corresponding inner sides facing the chamber 3, the main walls 24, 25.

In the example shown, the transverse ribs 33 are made as a separate element with one of the plates 4, 5 and extend to the opposite plate to which they are connected, for example, by welding or hot melt, when the plates 4, 5 are connected to each other to form the device 1 , in particular, by means of a local thermoelectric melting process on each transverse rib 33. In particular, the transverse ribs 33 are made in the form of protrusions on the inner side 11 of the rear plate 5 (and made, for example, by means of injection molding with the plate 5) and are welded to the inner side 8 of the front plate 4. Alternatively, the transverse ribs 33 can be made separately and welded to the two plates 4, 5, or even made integral with both plates 4, 5.

Essentially, depending on the method used in the manufacture of the body 2, the transverse ribs 33 can be formed directly integrally with both plates 4, 5, or integrally with one of the plates 4, 5, which are then joined (welded) to with another plate, or in the form of separate components, which are then connected (welded) to both plates 4, 5.

The transverse ribs 33 are distributed on the sides 8, 11, and their main function is to increase the mechanical strength of the device 1, in particular to increase its resistance to pressure. The transverse ribs 33 also help to seal the device 1 to a fluid, as they help keep the two plates 4, 5 connected together to prevent fluid leakage.

Since the transverse ribs 33 are installed along the heating liquid channel in the chamber 3, they also have the function of distributing the heating liquid in the chamber 3.

Basically, preferably, but not necessarily, the chamber 3 places between the two plates 4, 5 internal elements 34 (which may also include transverse ribs 33), which influence the flow of heating fluid circulating in the chamber 3, for example, to form one or more channels in the chamber 3 for distributing the heating liquid in the chamber 3, for changing the movement of the heating liquid in the chamber 3, etc.

In particular, the elements 34 (or at least some of the elements 34) are shaped and positioned to ensure an even distribution of water in the chamber 3.

In the preferred embodiment shown in FIG. 4, the elements 34 comprise, in addition to the transverse ribs 33, a first distributor 35a located at the upper end 36a of the chamber 3 and / or a second distributor 35b located at the lower end 36b of the chamber 3 (again referring to the normal position of use of the device 1 , the ends 36a, 36b are axially opposite ends relative to the longitudinal axis A).

The distributors 35a, 35b are formed by respective transverse walls, for example substantially parallel to the axis B (or inclined with respect to the lateral axis B, or curved or even differently formed), which extend between the inner side 8 of the front plate 4 and the inner side 11 of the rear plate 5 and between two lateral opposite sides of the chamber 3 and comprise a corresponding row of longitudinally spaced through holes 37. The distributor 35a is located near and below the inlet 16a formed by one of the bushings 16 and located at the upper end 36a of the chamber 3. The distributor 35a located adjacent and below the inlet 16a formed by the first connection 16 located at the upper end 36a of the chamber 3, and the distributor 35b is located adjacent and above at least one outlet 16b formed by another connection 16 located at the lower end 36b of the chamber 3.

In the preferred embodiment shown in FIG. 4, the chamber 3 has an inlet 16a formed by a first joint 16 located at the upper end of the chamber 3 and two outlets 16b formed by corresponding other connections 16 located at the lower end of the chamber 3 and at respective opposite side ends of the chamber 3. In use the heating liquid enters the chamber 3 through the inlet 16a and exits through both outlets 16b after being substantially evenly distributed within the chamber by the distributors 35a, 35b.

Chamber 3 can also accommodate only one of the valves 35a, 35b. The shape of the distributors 35a, 35b may also differ from the shape of the distributors shown and described herein by way of example only.

FIG. 7-9, in which elements similar or identical to those already described are designated with the same reference numerals, a second embodiment of a heating device 1 according to the invention is shown.

Also in this embodiment, the device 1 comprises a housing 2 made of metal, in particular aluminum, containing an inner chamber 3 (water chamber) through which a heating liquid (hot water) circulates in use.

In this case, the housing 2 is designed to be used in place of a known section of a known radiator to form a battery from adjacent radiator sections.

The chamber 3 has a generally flattened shape and generally extends along the longitudinal axis A, vertical in use, and the transverse axis B, horizontal in use, defining the height and width of the chamber 3, respectively.

The chamber 3 has a generally flattened shape and generally extends along the longitudinal axis A, vertical in use, and the transverse axis B, horizontal in use, defining the height and width of the chamber 3, respectively.

Chamber 3 has a height and width, measured respectively along the longitudinal axis A (vertical in use) and transverse axis B (horizontal in use), and a thickness, measured along the C-axis (also horizontal in use), perpendicular to the longitudinal axis A and to the transverse axis B.

The chamber is also delimited by a pair of opposite main walls 24, 25 facing each other and a peripheral edge 7 that connects the main walls 24, 25 to each other and has a surface that is smaller than each of the main walls 24, 25.

Also according to this embodiment, the chamber 3 has a generally flattened shape as described above. In fact, the chamber 3 generally extends in height and width, respectively, along the longitudinal axis A and the transverse axis B, and has a thickness measured along the C axis perpendicular to the longitudinal axis A and to the transverse axis B, which is significantly less than the height and width.

The thickness of the chamber 3 is also defined as the distance between the main walls 24, 25 (thus measured along the C-axis and specifically between the respective inner surfaces 26, 27 of the main walls 24, 25.

But at this point, the main walls 24, 25 are substantially perpendicular to the main front heat transfer surface 10 of the device 1 (and not, as in the embodiment described with reference to FIGS. 1-4, substantially parallel to the surfaces 10).

In other words, referring to the normal position of use of the device 1, the main walls 24, 25 form the corresponding lateral sides of the device 1.

The surface 10 consists of the outer side 9 of the front plate 4, which extends from the peripheral edge 7 of the chamber 3.

In particular, the plate 4 is connected to the front portion 28a of the peripheral edge 7 of the chamber 3.

Also according to this embodiment, the plate 4 comprises at least a wall 14 which directly delimits the chamber 3 by the surface 15 of the side 8 and, in use, directly comes into contact with the heating liquid contained in the chamber 3.

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The front portion 28a of the edge 7 is formed by the wall 14 of the plate 4, so that the plate 4 directly delimits the chamber 3, forming the front portion 28a of the edge 7, i.e. the plate 4 extends directly from the chamber 3 and has an inner side 8 which is partially wetted by the heating liquid circulating in the chamber 3.

Optionally, the housing 2 also includes a back plate 5 that extends from the rear portion 28b of the peripheral edge 7 of the chamber 3.

Also, the plate 5, like the plate 4, can extend directly from the chamber 3, having a wall 14 which forms the rear portion 28b of the edge 7 and which is therefore directly wetted by the heating fluid circulating in the chamber 3.

Preferably, the plate 4 and / or the plate 5 extend directly, at least partially, from the chamber 3 and are wholly or at least partially in direct contact with the heating liquid contained in the chamber 3, i. they have at least corresponding walls 14 which delimit the chamber 3 and, in use, directly come into contact with the heating liquid contained in the chamber 3. Thus, the plate 4 and / or the plate 5 are also so-called wet fins.

In particular, the walls 14 form corresponding portions of the edge 7 of the chamber 3.

In addition to the plates 4, 5, the device 1 contains additional heat exchange surfaces formed by a plurality of heat exchange fins 17 that extend outside the chamber 3 from the main walls 24, 25.

In the non-limiting example depicted, the ribs 17 are substantially perpendicular to the main walls 24, 25 and parallel to each other and to the longitudinal axis A (vertical in use). It is understood that the ribs 17 can be formed and located in different ways.

Preferably also in this case, all the ribs 17 extend directly from the chamber 3, since they are connected directly to the wet walls 18 of the chamber 3, in this case formed by the aforementioned main walls 24, 25 of the chamber 3, so that all the ribs 17 are wet ribs.

Also in this case, the ribs 17 are made in one piece with the plates 4, 5, from which they extend and form a monolithic element with them.

The connections 16 are arranged in pairs at respective opposite longitudinal ends (located along the longitudinal axis A), respectively, when using the upper end and the lower end of the housing 2.

Joints 16 extend from both walls 24, 25 and are substantially perpendicular to walls 24, 25, joints 16 located at the same longitudinal end are in line with each other, parallel to the C axis.

Also in the embodiment shown in FIG. 7-9, the body 2 is preferably (but not necessarily) formed with two monolithic elements, each containing one of the main walls 24, 25 and a corresponding peripheral edge 6.

The peripheral edges 6 are made to be connected to each other to form the peripheral edge 7 of the chamber 3.

The elements, which comprise the main walls 24, 25 and the corresponding peripheral edges 6, are made, for example, of die-cast aluminum and are preferably connected by the thermoelectric fusion process described earlier along the respective peripheral edges 6 to form a mechanical and fluid impermeable connection.

Thus, the connection (fusion) along the peripheral edges 6 provides efficient heat transfer due to both main walls 24, 25 of the chamber 3 with the plates 4, 5.

FIG. 9 also shows one of the transverse ribs 33, which are located inside the chamber 3, and which extend between the opposite walls 24, 25 of the chamber 3 and are made in one piece with the corresponding inner surfaces 26, 27 of both walls 24, 25.

FIG. 10 and 11 show other alternative embodiments of the device according to the invention, in which the chamber 3 extends between plates 4, 5 located at the front end and the rear end of the device 1, respectively.

Chamber 3 contains a main compartment 43, which runs along the transverse axis B and is bounded by the main walls 24, 25, and one (Fig. 10) or two (Fig. 11) end compartments 44 communicating with the main compartment 43 and running parallel to the C axis on front plate 4 and / or back plate 5.

Thus, also in these alternative embodiments, one or both of the plates 4, 5 comprise walls 14 that define the chamber 3 and are wetted directly by the heating liquid.

Finally, it will be understood that other modifications and variations to the heating device described and shown herein are possible without departing from the scope of the invention as set forth in the appended claims.

Claims (7)

CLAIM 1. A heating device (1) having at least one housing (2) made of aluminum or aluminum alloy, containing an inner chamber (3) in which the heating fluid circulates, connections (16) communicating with the chamber (3) and extending from the housing (2), a first heat exchange plate (4) having an outer side (9) facing the heating area during use and forming a first heat exchange surface (10) of the device (1), and an inner side (8) opposite the outer side (9) facing the chamber (3), and the second heat exchange plate (5), with the first and second plates (4, 5) located on the respective opposite ends of the body (2), with both plates (4, 5) passing directly, at least partially, from the chamber (3) and contain at least corresponding walls (14), which directly delimit the chamber (3) and, in use, come into direct contact with the heating liquid contained in the chamber (3) , through the corresponding surfaces (15), and the chamber (3) passes between the first and second plates (4, 5) and comes into direct contact with at least the corresponding surfaces (15) of both plates (4, 5), and the first and the second plates (4, 5) are, respectively, the front heat transfer plate (4) and the rear heat transfer plate (5), located respectively at the front end and the rear end of the housing (2) and essentially facing each other and connected along respective peripheral edges (6), which together form a peripheral edge (7) of the chamber (3), the peripheral edge (7) of the chamber (3) being formed to come into contact with each other, i.e. aligned and connected to each other peripheral edges (6) of the plates (4, 5), and one of the plates (4, 5) contains a peripheral frame (29) protruding outward beyond the peripheral edge (7) of the chamber (3) at least from a portion of the peripheral edge (7) of the chamber (3) and substantially flat and parallel to the outer side (9, 12) of the plate (4, 5), from which the frame (29) protrudes, or the frame (29) is bent or tilted , or is rounded relative to the said outer side (9, 12) of the plate (4, 5), from which the frame (29) projects, to the opposite plate or to the other side relative to the opposite plate, and the frame (29) is formed by the peripheral portion of the said plate (4 , 5) and extends from the peripheral edge (6) of the same plate (4, 5) beyond the peripheral edge (6) of the same plate and is detached and separated from the peripheral edge (6) of another plate (4, 5), and the rear heat transfer plate (5) supports a plurality of heat exchange fins (17) that extend outside the chamber (3 ) from the outside (12) of the rear heat exchanger plate (5). 2. A device according to claim 1, in which the frame (29) projects beyond the peripheral edge (7) of the chamber (3) from all sides or some sides of only said peripheral edge (7), the frame (29) protruding in the same way, i.e. ... equally, from all sides of the peripheral edge (7) of the chamber (3), or differently from different sides of the said peripheral edge (7). 3. A device according to one of the preceding claims, in which the plates (4, 5) have corresponding peripheral frames (29) protruding from the respective peripheral edges (6) of the plates (4, 5) and located at a distance and / or separated from each other ... 4. A device according to one of the preceding claims, in which the chamber (3) is bounded by a pair of main walls (24, 25) facing each other and a peripheral edge (7) connecting the main walls (24, 25), wherein the first plate ( 4) protrudes from the front portion (28a) of the peripheral edge (7) of the chamber (3). 5. The device according to one of the previous claims, in which transverse ribs (33) are located inside the chamber (3), which pass between at least one pair of opposite walls (24, 25) of the chamber (3) and are made in one piece with the corresponding internal surfaces (26, 27) of both mentioned walls (24, 25). 6. A device according to one of the preceding claims, in which the housing (2) has a plurality of heat exchange fins (17) protruding from the outside of the chamber (3) and all the fins (17) are so-called wet fins that extend directly from the chamber (3) and from the wet wall (18) of the chamber (3) and are integrally formed with the wet wall (18) of the chamber (3). 7. A device according to one of the preceding claims, in which the chamber (3) extends over at least 60% of the inner surface (8) of the first plate (4).