FR2911243A1 - Electric heating device i.e. electric towel-drying heater, for bathroom, has heating cable housed in two heating bars, and notch for carrying cable portion situated between heating bars in support against wall formed by mounting post - Google Patents

Abstract

The device has a heating module formed by two heating bars, and a vertical mounting post supporting each heating bar while being fixed vertically to an end of the bar. A heating cable (8) is housed in the heating bars while passing through the mounting post. A notch (13) carries a cable portion (10) situated between the heating bars in support against a wall that is formed by the mounting post. The mounting post forms a junction bar (6) which is fixed on the heating bars by a foot (6.2). An independent claim is also included for a method for assembling an electric heating device.

Description

Electric heater and its use as a dry radiator

  TECHNICAL FIELD The invention relates to an electric heater and its use as a dry towel radiator for bathrooms. The object of the invention is to improve the operation of such a device and to increase its service life. The invention can be applied to the field of heating appliances for all kinds of rooms. By rooms we mean bathrooms, living room, kitchen, workroom, office, etc ... State of the art Such a heater may be, for example, an electric bathroom radiator. Such a radiator is usually placed against a wall of the room to be heated while being connected to an electrical outlet. This electric heater is of the ladder type and comprises a plurality of modules formed by a first heating bar and a second heating bar. These modules are arranged horizontally below each other in a plane parallel to a plane of the wall. At least one upright is disposed substantially vertically with respect to a floor plane of the room. This amount is fixed at one end of each of the heating bars to connect each of the heating bars one after the other. The radiator also has a heating cable. This cable is connected to a controllable power supply. The cable is used to heat at least each of the bars. This cable extends vertically with respect to the ground plane from a lower part to an upper part of the apparatus while extending through the modules and the upright. The cable first extends into a first heating bar in a first direction and then forms a loop in the same first heating bar. Then the cable extends again in a second direction opposite to the first in this first heating bar to then be placed in the next heating bar, that is to say in a second heating bar. The cable is pressed against a wall formed by each of the heating bars.

  Technical problem The cable comprises at least a portion of cable intended to be housed freely in a space formed by the amount. In particular, the cable includes such a cable portion at a point of the cable located between the first bar and the second bar in a given module. Or also, the cable includes such a cable portion at another point of the cable between a first module and a second module of the device. However, the dissipation of the heat produced by such a cable is obtained by contact of the cable with the material formed by each of the heating rods. The portion of cable intended to be freely disposed in the air contained in the space of the upright does not allow an electric wire formed by the cable to be able to sufficiently dissipate the heat it produces. The cable being formed by the electric wire and a sheath of elastic material, the sheath covering the wire, the electric wire tends to overheat. The material formed by the sheath may tend to melt or spoil. The electrical wire and the sheath are therefore likely to deteriorate prematurely due to a poor dissipation of the heat produced by the electric wire. SUMMARY OF THE INVENTION To solve this problem, the invention therefore provides for forcing a contact of the cable portion with a wall formed by the amount. To do this, the invention provides means for supporting the cable against the wall of the amount. These means for supporting the cable are formed by at least one notch adapted to receive the cable, the notch being formed by the wall of the amount.

  The wall of the upright can be formed by a connecting bar forming in cross section an inverted T. This junction bar has the notch and allows the cable to be placed while being forced to bear against a surface formed by the connecting bar. In a variant of the invention, the tie bar forms a longitudinal gutter. This gutter receives the heating cable at the output of the notch. This gutter advantageously keeps the cable in place during the installation of this cable through the various heating rods of this device. The invention allows a maximum surface of the cable portion located in the amount is placed in contact with the wall of the amount.

  Each of the heating bars and the upright are preferably made of aluminum. The invention therefore relates to a heating apparatus for heating a room, comprising - a vertical upright, - a module formed by a first heating bar and a second heating bar, the amount supporting each of the heating bars while being attached substantially vertically to one end of each of the heating rods, and - a heating cable housed in the first bar and in the second bar while passing through the upright, characterized in that it comprises means for carrying a portion of the cable between the first bar and the second bar bearing against a wall formed by the amount. BRIEF DESCRIPTION OF THE DRAWINGS The invention will be better understood on reading the description which follows and on examining the figures that accompany it. These are given for illustrative and not limiting of the invention. These figures show: FIG. 1: An exploded representation of a heating apparatus, according to the invention, FIG. 2: A schematic representation of the positioning of a heating cable in heating rods and in a pillar of a device Figure 3 is a diagrammatic representation of a cross-section of an end of a heating bar and a post at a location where the heating cable is placed according to the invention. - Figure 4: A schematic representation of a cross section of an end of a heating bar and an amount according to the invention - Figure 5: A junction bar of a heater seen from below According to the invention, FIG. 6 is a cross-sectional view of a shoe according to the invention. FIG. 7 is a sectional view from above of a shoe according to the invention. FIG. A schematic cross section of a heating bar, according to the invention, FIG. 9: A view in cross section of a key, according to the invention, and - Figure 10: A sectional view from above of a key, according to the invention. Figure 1 illustrates a heater 1 according to the invention. This appliance can form an electric radiator for bathroom towels or any other type of room that needs to be heated. The operation of this radiator can be controlled by an electrical box (not shown) connecting the device to a power source. This radiator 1 is generally attached to a wall of the bathroom while being connected to an electrical outlet (not shown) via the electrical box. This radiator 1 comprises several heating modules such as 2 arranged vertically one above the other, in a plane substantially parallel to a plane of the wall. The wall is a place against which is hung such a heater. The plane of the wall is relatively parallel to the plane in which each module extends. Each module 2 is formed by a first heating bar 3 and a second heating bar 4. Each of these heating bars can be coated with towels for drying or for heating them. The radiator 1 also comprises at least one vertical upright 5 disposed substantially vertically with respect to the first heating bar and the second heating bar and with respect to a plane of the ground. This amount 5 is placed at one end of each of the heating bars.

  This amount 5 is formed by a connecting bar 6 and a cover 7. The cover has a generally oval section. The lid 7 has a longitudinal opening 41 extending along a vertical axis 14 of the radiator. The vertical axis 14 of the radiator is an axis along which the upright 5 is positioned and is an axis which is perpendicular to the plane of the ground in the normal operating position of the apparatus. The opening 41 is made in such a way that it is able to receive the connecting bar 6 while covering the connecting bar 6. The connecting bar 6 is fixed, by means of screws for example, on one end of the first heating bar 3 and on one end of the second heating bar 4 of each of the modules formed by the device 1. This junction bar 6 is used to connect the heating rods between them and the different modules above one another. other. The cover 7 and the junction bar 6 are arranged substantially vertically with respect to the modules and relative to the plane formed by the floor of the room.

  The radiator 1 also comprises a heating cable such as 8, FIG. 2. This heating cable extends inside each of the heating rods and inside the upright 5 from a lower part of the appliance in the direction of an upper part of the same apparatus, the upper part being a part of the apparatus farthest from the ground unlike the lower part. The heating cable 8 extends in each of the bars in a first direction that is relatively parallel to the plane of the ground, and then extends in a second direction opposite to the first while forming a loop 9, inside the heating bar. corresponding. The cable 8 is then passed through the post to be placed in the next heating bar on a cable portion 10. In fact, the cable comprises at least a portion of cable 10 which is intended to be located in the amount between a given first heating bar and a given second heating bar. The cable is formed by an electric wire and a sheath formed of an elastic material (not shown). The electric wire forms an electrical resistance and the sheath protects the wire over its entire length. According to the invention, the radiator comprises means for carrying the cable portion 10 in abutment against a wall formed by the amount. The crossbar 6 cross-sectional shape generally T-shaped overturned, Figures 3 and 4. The connecting bar extends from the lower part of the radiator to the upper part of the radiator, perpendicular to the ground plane. More precisely, the connecting bar is formed by a stem 6.1 and a foot 6.2. The foot 6.2 extends in a plane parallel to the plane of the wall when the device is in position hung on the wall. The foot is pressed against the heating bars parallel to a plane in which the heating rods extend and vertically in relation to the ground plane. The stem 6.1 rises along the vertical axis 14, perpendicular to a surface formed by the foot 6.2, along the foot and the middle of the foot in one example.

  The junction bar 6 comprises at least one notch such as 13, Figures 3, 5. The notch 13 extends from an edge of the junction bar 6 perpendicular to the vertical axis 14 of the radiator. The foot 6.2 has a front edge 25 and a rear edge 26, the front edge 25 being adapted to cooperate with the cable, Figure 5. More specifically, the notch 13 is formed from the front edge of the foot 6.2 while s extending towards the stem 6.1. This notch 13 is intended to receive the cable portion 10. Once placed in the notch 13, the cable portion 10 is then positioned in abutment against a surface of the rod 6.1. The notch 13 forms a passage guide of the cable through the amount forcing the cable to be positioned in abutment against the rod 6.1 of the connecting bar. The cable 8 then extends from one heating bar to another while being in contact with the stem 6.1 and possibly the foot 6.2 of the connecting bar 6.

  The radiator may comprise at least one first notch 13 and at least one second notch 42. Indeed, for each heating bar, a first notch 13 and a second notch 42 may be formed. The first notch 13 receives the cable intended to be inserted in a given heating bar. The second notch 42 receives the cable coming out of this same heating bar. The notches 13 and 42 are symmetrical with respect to an axis 43 which is parallel to the plane in which extends a given heating bar and which is perpendicular to the vertical axis 14. The notch such as 13, 42 according to the invention comprises a trapezoidal shape. More specifically, the notch 13 includes a flank 27, a bottom 28 and a chamfer 29, the bottom 28 connecting the flank 27 to the bevel 29. The flank 27 forms a surface perpendicular to a surface formed by the bottom 28 of the notch 13, the surface formed by the bottom 28 extending relatively parallel to the vertical axis 14. The chamfer 29 forms a surface inclined relative to the surface formed by the bottom 28. The chamfer 29 allows the cable to bend widely in a space cleared by the chamfer 29 when the cable extends from a heating bar of a given module to another heating bar of another module. The first notch 13 and the second notch 42 are located relative to each other with their respective chamfer placed close to the axis 43 while their respective side is located remote from the same axis 43. Between the first notch 13 and the second notch 42, a connecting surface portion 30 is formed. This surface portion 30 is formed while being slightly set back from the leading edge of the foot 6.2.

  This connecting surface portion 30 is formed between the first notch 13 and the second notch 42 and connects the chamfer of the first notch 13 to the chamfer of the second notch 42. The connecting bar 6 has a groove 16 for receiving the cable, Figures 3 and 4. This groove 16 is formed by the stem 6.1, longitudinally relative to the vertical axis 14. In one example, this groove 16 is obtained by deformation of the material formed by the connecting bar 6. This groove 16 cross sectional shape a generally round shape. This groove 16 is made so that a maximum surface formed by the cable portion is in contact with an inner surface formed by the groove.

  This groove is made such that it adapts to a shape of the cable 8 to hold the cable in place during its passage in the amount. The junction bar thus increases the capacity of the upright to evacuate the heat produced by the electric wire. Each of the heating bars forms a hollow flat cylindrical tube and at least one shoe 15, FIGS. 6, 7. The tube is closed at least at one end by the shoe 15. Each of the tubes formed by a given heating bar is formed by a front hull 12 and a rear hull 11, Figure 8. The rear hull 11 is intended to be placed close to the wall while the front hull 12 is located away from the wall. The rear shell 11 is embedded in the front shell 12. Once positioned in the heating bar, the cable 8 is intended to exit through an orifice 44 delimited by the rear shell 11, the front shell 12 and the shoe 15. Then, the cable is introduced inside the amount between the cover 7 and the connecting bar 6, while passing through the notch 13.

  To keep the junction bar 6 in place relative to the different heating bars to each other, each of the heating bars is provided with a locking key 17 or shoe wedge, FIGS. 9 and 10. This key 17 is embedded in the orifice 44 while being maintained in translation longitudinally, perpendicularly and orthogonally with respect to the vertical axis 14 of the radiator.

  To do this, the key 17 comprises a first step 18, a second step 19 and a third step 20. By redan is meant surface elevation delimiting a slot through which can be introduced a wall parallel to a plane from which The elevation is formed.

  The key 17 is in abutment against the rear shell 11, the connecting bar 6 and the shoe 15 via respectively the first step 18, the second step 19 and the third step 20. The first step 18 defines a first space with the rest of the key through which the back shell 11 is embedded on the key. The second step 19 defines a second space with the remainder of the key through which the junction bar 6 is embedded on the surface portion 30. The third step 20 defines with the rest of the key a third space through which recess on the shoe 15 on the key 17. The key 17 against the back shell 11 by means of the first step 18 is made in a direction opposite to the vertical axis 14, perpendicular to the same axis vertical 14, and orthogonally to the same vertical axis 14. The key 17 against the support bar 6 and against the shoe 15 via respectively the second step 19 and the third step 20 is made in the direction of the vertical axis 14. The key 17 is retained at the rear shell 11 and the connecting bar 6 in the direction of the wall, longitudinally with respect to an axis orthogonal to the vertical axis 14. The key 17 is flush with the junction bar 6 by positioning the second redan 1 9 on the connecting surface portion 30, Figure 4. The key 17 is retained at the shoe 15 towards the wall, longitudinally with respect to the orthogonal axis. The key 17 comprises a front face 35 and a rear face 36, the front face 35 being a face adapted to cooperate with the rear shell 11 and the rear face 36 is intended to cooperate with the connecting bar. The key also comprises at least one opening opening such as 23, FIG. 7. This opening opening 23 is made from the rear face 36 of the key. This orifice 23 is situated opposite the notch when the key 17 is inserted into the orifice 44. Thus, the cable 8 leaves the corresponding heating bar while being introduced through the orifice 23 and the notch 13 to be placed in abutment against the surface of the connecting bar 6, in the groove 16.

  In a variant, FIG. 10, the key 17 has a second orifice 24 smaller than the orifice 23. This second orifice 24 opening is formed from the first orifice and opens also allows possibly to pass a second heating cable or cable measuring device capable of measuring physico-chemical variations of the electric wire. 9, the second step 19 is set back from the third step 20. The key 17 is inserted between the rear shell 11 and the shoe 15 with a slight axial displacement 37, FIG. 4. This deflection facilitates the extraction of the key relative to the connecting bar and relative to the rear shell 11 at the time of disassembly of the device. The cover 7 is placed on the key 17 between the first step 17 and the second step 18. The shoe 15 forms at least one hook 21, FIGS. 8 and 9. The joining bar 6 is embedded on the shoe 15 in the hook 21 The junction bar 6 is held in translation parallel to the wall plane in one direction while bearing against the hook 21 and in an opposite direction while bearing against the second step 19. But the junction bar 6 is also maintained. in translation longitudinally with respect to the vertical axis 14 or perpendicular to the plane of the wall. To do this, the junction bar 6 also comprises at least one notch 22 for receiving the hook 21. This notch 22 is formed from the rear edge 26 of the connecting bar 6 and is directed towards the rod 6.1. Placed in the notch 22, the hook 21 keeps the connecting bar 6 in translation longitudinally with respect to the vertical axis 14. The hook 21 has a first width L1 which is slightly smaller than a second width L2 of the notch 22. The first width L1 and second drop L2 are measured along an axis parallel to the vertical axis 14. The hook 21 is inserted into the notch 22 in such a way that there is only a few vertical games between the bar junction 6 and the hook 21.

  The key 17 and the shoe 15 respectively form a first elevation 31 and a second elevation 32. Each of these elevations result from an elevation of a surface formed by the key 17 and the shoe 15. Each of these elevations comprises a face of support 33 and 34 respectively intended to cooperate with a surface of the cover 7. This bearing surface is slightly concave so as to adapt to the surface of the cover 7. On each of the bars, the amount 5 is wedged in a direction by pressing the cover 7 against the first elevation 31 and in an opposite direction by pressing the cover 7 against the second elevation 32, perpendicularly to the vertical axis 14. The first elevation 31 and the second elevation 32 are arranged on both sides. other amount. The method of mounting such a radiator is as follows. The heating cable 8 is placed in the first heating bar 3 by passing through a first first notch. Inside the first heating bar, the cable makes a loop. Then, the cable 8 is inserted through a second first notch. The cable is then pressed along a surface formed by the rod 6.1 to the second heating bar 4. Before entering the second heating bar 4, the cable is inserted through a second first notch of the amount. The cable is placed in the second heating bar with a second loop. Then the cable out of this second heating bar by inserting through a second second notch. The amount is then locked on at least one heating bar by insertion of the locking key 7 between the corresponding heating bar and the amount.

  To disassemble the assembly, because of the slight axial displacement 37 existing between the upright 5 and the rear shell 11, it is possible to unclamp the key 17 by axially moving the key relative to the vertical axis 14 between the bar 6 and the rear shell 11 of the light game 37. The rear shell 11 is fitted into the front shell 12 and forms two flanges 38 and 39 at a location near the end of the heating bar. These two edges are remote from a bottom 40 formed by the front shell 12 by a distance L3. This distance L3 is measured along an axis perpendicular to the plane of the wall and passing through the corresponding heating bar. Thus, during disassembly of the apparatus, it is possible to press the rear shell 11 so as to bring the flanges against the bottom of the front hull 12 by a distance L3. The rear shell 11 is thus separated from the first step 18. The extraction of the key 17 is then facilitated.

Claims (9)

  1 - Electrical heating apparatus (1) for heating a room, comprising - a vertical upright, - a module (2) formed by a first heating bar (3) and a second heating bar (4), the supporting support each of the heating bars while being fastened substantially vertically to one end of each of the heating bars, and - a heating cable (8) housed in the first bar and in the second bar while passing through the upright, characterized in that it comprises means (13) for carrying a portion (10) of the cable located between the first bar and the second bar bearing against a wall formed by the amount. 2 - Apparatus according to claim 1, characterized in that the upright forms a connecting bar (6) of T-shaped cross section, with a foot (6.2) and a rod (6.1), the connecting bar being fixed on the first heating bar and on the second heating bar via the foot, the foot having at least one notch (13) adapted to receive the cable while causing a support of the cable against the rod output of the corresponding heating bar . 3 - Apparatus according to one of claims 1 to 2, characterized in that it also comprises at least one locking key (17) disposed between a heating bar and the amount, the key now in place the amount relative to the corresponding heating bar. 4-Apparatus according to claim 3, characterized in that the key comprises a front face (35) adapted to cooperate with the upright and a rear face (36) adapted to cooperate with a corresponding bar, the front face being hollowed out of a passage hole (23,24), this passage opening being adapted to receive the cable. 5 - Apparatus according to one of claims 3 to 4, characterized in that the key comprises a first step (18), a second step (19) and a third step (20), the key being held in abutment against the amount and against the heating bar perpendicular to a vertical axis (14) of the apparatus and longitudinally with respect to a plane in which the heating bar extends in a first direction by pressing the first step against the heating bar and according to a second direction opposite to the first by support of the second redan and the third redan respectively against the amount and against the heating bar. 6 û Apparatus according to one of claims 1 to 5, characterized in that at least one heating bar comprises a hook (21) in which the amount is recessed to block the amount in translation in a direction perpendicular to the a vertical axis (14) of the radiator and with respect to the heating bars. 7 - Apparatus according to claim 6, characterized in that the amount comprises at least one notch (22) cooperating with the hook to also block the amount in translation longitudinally with respect to the vertical axis. 8 - Device according to one of claims 1 to 7, characterized in that the amount forms a groove (16) extending longitudinally relative to a vertical axis (14) of the apparatus, a portion of the cable portion being lodged in this gorge. 9 - A method of mounting a heater according to one of claims 1 to 8, characterized in that it comprises the following steps - insert the cable through a first first notch (13) formed by the amount -placing the heating cable in a first heating bar by making a first loop inside the first bar, then, -placing the cable in a second first notch (42) of the upright, -plating the cable against a wall from the upright to the second heating bar, - insert the cable into the second heating bar through a second first notch of the upright, - place the cable in the second heating bar also making a second loop in the second bar, and - leave the cable of the second bar through a second second notch. Method according to the preceding claim, characterized in that it comprises the following step - insertion of a locking key (17) between the corresponding heating bar and the amount to lock the upright on the corresponding heating bar.