Inertia heating body for electric radiator

Abstract

The invention relates to an inertia heating body (14) for an electric radiator, which is adapted to be mounted inside a casing of an electric radiator, and which comprises at least one heating element (30), characterized in that it comprises a front plate (22a) and a rear plate (22b) which respectively have a first internal face (24a) and a second internal face (24b) which are arranged opposite each other, said plates (22a, 22b) delimiting between them a housing (28) provided to accommodate the heating element (30), and said plates (22a, 22b) each being made of cast iron. [Fig. 2]

Description

Title of the invention: Inertia heating body for electric radiator Technical field

[0001] The present patent application relates to an inertia heating body for an electric radiator and a radiator equipped with such a heating body.

[0002] It relates to the field of electric inertia heating devices, and more particularly to the field of inertia heating bodies. State of the art

[0003] It is known to equip an electric radiator with an inertia heating body, an example of such an electric radiator is described and represented in document FR3054024B1.

[0004] According to this document, the electric radiator comprises a rear frame and a front panel which delimit an internal housing in which a mineral heating body is installed.

[0005] The mineral heating body is composed of two plates between which an electric heating element of the electric resistance type is inserted.

[0006] A mineral heating body, for example made of natural stone or reconstituted stone, offers a significant thermal capacity, good electrical insulation of the electrical resistance and allows heat to be dissipated to the environment more uniformly than a simple electrical resistance.

[0007] However, a mineral heating body is fragile, so special measures must be taken for its fixing in the radiator in order to avoid cracking or breaking the heating body during transport, handling and / or installation of the radiator.

[0008] These specific measures are restrictive and complicate the design of the electric radiator equipped with such a mineral heating body. Statement of the invention

[0009] The present invention aims in particular to resolve the drawbacks of the aforementioned prior art by proposing a heating body which is robust and which has excellent characteristics of thermal inertia and volumetric heat capacity.

[0010] This objective is achieved, as well as others which will become apparent upon reading the following description, with an inertia heating body for an electric radiator, which is adapted to be mounted inside a case of an electric radiator, and which comprises at least one heating element, characterized in that it comprises a front plate and a rear plate which respectively have a first internal face and a second internal face which are arranged opposite each other, said plates delimiting between them a housing provided to accommodate the heating element, and said plates each being made of cast iron.

[0011] The design of the heating body in two plates, and its manufacture in cast iron, gives it thermal inertia and a significant thermal capacity.

[0012] According to other optional characteristics of the invention, taken alone or in combination:

[0013] - the front plate and the rear plate of the heating body respectively have a first imprint and a second imprint which delimit the housing for receiving the heating element, said housing being designed to envelop the heating element. This characteristic makes it possible to optimize the contact and exchange surface between the heating element and the plates of the heating body;

[0014] - the heating body comprises a plurality of fixing screws which are provided for fix the front plate and the back plate of the heating body together, and which allow the disassembly of said plates. Thus, it is easy to replace the heating body plates if necessary;

[0015] - the heating element is an electrical resistance which forms a coil and which extends into the housing provided for this purpose;

[0016] - the heating body is equipped with a first mount and a second mount which are connected to a first free end of the heating body, each mount comprising at least one fixing lug intended to be fixed to the body of a radiator;

[0017] - the front plate and the rear plate of the heating body are identical;

[0018] - the front plate and the rear plate respectively have a front external face and a rear external face which are each provided with a plurality of fins provided to promote the thermal diffusion of the heating body.

[0019] The invention also relates to a radiator which comprises a box in which a heating body of the type described above is mounted. Brief description of the drawings

[0020] Other characteristics, aims and advantages of the invention will appear on reading the detailed description which follows for the understanding of which reference will be made to the appended drawings in which:

[0021] [Fig. 1] shows an electric radiator equipped with a heating body comprising two cast iron plates, according to the invention;

[0022] [Fig.2] is an exploded view illustrating the heating body of [Fig.l];

[0023] [Fig.3] is a perspective view of the heating body of [Fig.l];

[0024] [Fig.4] is a sectional view of the heating body of [Fig.l] along plane IV sagittal median of [Fig.3].

[0025] In the description and the claims, the terminology longitudinal, vertical and transverse will be adopted without limitation with reference to the trihedron L, V, T indicated in the figures, considering that the radiator of [Fig.l] extends vertically in a position of use fixed on a wall.

[0026] Throughout these figures, identical or similar elements are identified by identical or similar reference signs.

[0027] Detailed description of embodiments of the invention

[0028] [Fig.l] shows a dry inertia electric radiator 10 which comprises a box 12 and a heating body 14 mounted inside the box 12.

[0029] The box 12 has a generally parallelepiped shape which is delimited in particular by a vertical front wall 16 intended to diffuse heat by radiation, a vertical rear wall 18 which is equipped with a means (not shown) for fixing the radiator 10 to a wall, and an openwork upper wall 20.

[0030] The body 12 of the radiator 10 is made of stamped sheet metal, for example.

[0031] With reference to Figures 2 and 4, the heating body 14 comprises a front plate 22a vertical and a rear plate 22b vertical which respectively have a first internal face 24a and a second internal face 24b which are arranged opposite each other and which each extend in a longitudinal and vertical plane.

[0032] The front plate 22a and the rear plate 22b of the heating body 14 respectively have a first imprint 26a and a second imprint 26b which delimit a housing 28 for receiving a heating element 30.

[0033] The housing 28 has the shape of a serpentine of circular cross-section, which extends successively from a longitudinal inlet portion 32 opening out, a first U-shaped bend 34, a first longitudinal intermediate portion 36, a second U-shaped bend 38, a second longitudinal intermediate portion 40, a third U-shaped bend 42 and a longitudinal outlet portion 44 opening out.

[0034] Also, it will be noted that the front plate 22a and the rear plate 22b of the heating body 14 are identical and that the housing 28 is delimited in equal parts by the front plate 22a and by the rear plate 22b, along the junction plane of said plates 22a, 22b.

[0035] According to [Fig.2], the heating element 30 is an electrical resistor which extends into the housing 28 provided for this purpose and which has a shape complementary to the shape of the housing 28.

[0036] The heating element 30 comprises an inlet section 46 and an outlet section 48 which each have a free end which projects outside the housing 28.

[0037] The free end of the inlet section 46 and the free end of the outlet section 48 of the heating element 30 are each equipped with an electrical connection end piece 50 provided to supply the heating element 30.

[0038] For this purpose, with reference to [Fig. 1], each end piece 50 of the heating element 30 is electrically connected to an electrical power supply box 52, itself designed to be connected to an external electrical energy source (not shown).

[0039] As can be seen in [Fig.4], the housing 28 has a shape complementary to the shape of the heating element 30 so as to envelop the heating element 30 to optimize the contact and exchange surface between the heating element 30 and the plates 22a, 22b of the heating body 14.

[0040] It will be noted that the heating element 30 is arranged without play in the housing 28.

[0041] These characteristics allow the heating body 14 to better store the heat and to promote the transmission of calories from the heating element 30 to the plates 22a, 22b of the heating body 14.

[0042] Also, such a configuration makes it possible to reduce direct contact between the heating element 30 and the outside world.

[0043] Furthermore, as can be seen in [Fig.4], the first internal face 24a and the second internal face 24b of the plates 22a, 22b of the heating body 14 are arranged in plane support against each other without play, which makes it possible to avoid certain undesirable effects such as the friction of the plates 22a, 22b between them and the vibrations of the heating body 14.

[0044] For this purpose, the heating body 14 comprises four fixing screws 54 which are each arranged in a corner of the heating body 14 and which pass transversely through the heating body 14.

[0045] According to [Fig.4], each screw 54 has a head 56 which is arranged on the side of the front plate 22a and a nut 58 which is arranged opposite, on the side of the rear plate 22b, which allows the front plate 22a to be tightened against the rear plate 22b of the heating body 14.

[0046] In order to promote the thermal diffusion of the heating body 14, the front plate 22a and the rear plate 22b respectively have a front external face 60a and a rear external face 60b which are each provided with a plurality of fins 62a, 62b respectively.

[0047] The fins 62a, 62b are distributed regularly in a longitudinal direction and they each extend vertically, that is to say perpendicular to the rectilinear sections of the heating element 30.

[0048] The heating body 14 is equipped with a first lateral mount 64a and a second lateral mount 64b which are identical and which each have a U shape.

[0049] Each mount 64a, 64b comprises a plate 66a, 66b respectively, and two fixing lugs 68a, 68b respectively which extend longitudinally from the associated plate 66a, 66b.

[0050] As can be seen in [Fig.l], the fixing lugs (only the lugs 68a are visible in [Fig.l]) are fixed to the rear wall 18 of the body 12 of the radiator 10 by screws.

[0051] Also, the plates 66a, 66b extend vertically and they are connected respectively to a first longitudinal free end 70a and to a second longitudinal free end 70b of the heating body 14, by means of the fixing screws 54 and the nuts 58 of the plates 22a, 22b.

[0052] More particularly, the plates 66a, 66b of the mounts 64a, 64b are fixed on the rear plate 22b of the heating body 14.

[0053] Furthermore, in accordance with the invention, the front plate 22a and the rear plate 22b of the heating body 14 are made of cast iron, that is to say an alloy of iron, carbon and other elements, obtained by fusion.

[0054] The design of the heating body 14 in two plates 22a, 22b, and its manufacture in cast iron, gives it significant thermal inertia.

[0055] The term "thermal inertia" of a material refers to its resistance to temperature change, which translates into the capacity of a material to store heat and release it little by little.

[0056] The thermal inertia of a material is quantified essentially by its thermal diffusion, its thickness and its thermal effusivity.

[0057] Also, the heating body 14 according to the invention, due to its cast iron manufacture, has an excellent volumetric thermal capacity, which is its capacity to store heat relative to its volume.

[0058] The heating body 14 according to the present invention, due to this thermal inertia and its significant thermal capacity, makes it possible to capture energy and restore it in the form of gentle and constant heat.

[0059] Advantageously, this characteristic makes it possible to limit the electrical consumption of the radiator 10 equipped with a heating body 14 according to the invention.

[0060] Naturally, the invention is described in the above by way of example. It is understood that a person skilled in the art is able to carry out different variant embodiments of the invention without departing from the scope of the invention.

Claims

Claims

1. Inertia heating body (14) for an electric radiator (10), which is adapted to be mounted inside a case (12) of an electric radiator, and which comprises at least one heating element (30), characterized in that it comprises a front plate (22a) and a rear plate (22b) which respectively have a first internal face (24a) and a second internal face (24b) which are arranged opposite each other, said plates (22a, 22b) delimiting between them a housing (28) provided to accommodate the heating element (30), and said plates (22a, 22b) each being made of cast iron, in which the front plate (22a) and the rear plate (22b) of the heating body (14) respectively have a first imprint (26a) and a second imprint (26b) which delimit the housing (28) for receiving the heating element (30), said housing (28) being adapted to envelop the heating element.

2. Heating body (14) according to claim 1, characterized in that the housing forms a contact and exchange surface between the heating element (30) and the front and rear plates (22a, 22b).

3. Heating body (14) according to any one of the preceding claims, characterized in that the first internal face (24a) and the second internal face (24b) are arranged in plane support against each other without play.

4. Heating body (14) according to any one of the preceding claims, characterized in that it comprises a plurality of fixing screws (54) which are provided for fixing the front plate (22a) and the rear plate (22b) of the heating body (14) together, and which allow the disassembly of said plates (22a, 22b).

5. Heating body (14) according to any one of the preceding claims, characterized in that the heating element (30) is an electrical resistance which forms a coil and which extends into the housing (28) provided for this purpose.

6. Heating body (14) according to any one of the preceding claims, characterized in that it is equipped with a first mount (64a) and a second mount (64b) which are connected on a first free end (70a) and on a second free end (70b) respectively of the heating body (14), each mount (64a, 64b) comprising at least one fixing lug (68a, 68b) intended to be fixed on the body (12) of a radiator (10).

7. Heating body (14) according to any one of the preceding claims, characterized in that the front plate (22a) and the rear plate (22b) of the heating body (14) are identical.

8. Heating body (14) according to any one of the preceding claims, characterized in that the front plate (22a) and the rear plate (22b) respectively have a front external face (60a) and a rear external face (60b) which are each provided with a plurality of fins (62a, 62b) provided to promote the thermal diffusion of the heating body (14).

9. A radiator (10) which comprises a housing (12) in which a heating body (14) according to any one of the preceding claims is mounted.

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