EP0979980A1 - Heat exchanger - Google Patents

Abstract

The heat exchanger consists of a series of horizontal radiant tubes (1) connected to vertical manifolds (2, 3) attached to water feed and return pipes (5, 7). One of the two manifolds is made from two linked tubular ducts (8, 9) joined at the top by a connecting piece (10). The second duct (9) of the two is connected to the horizontal tubes and is closed at its lower end, while the first is connected via a sleeve (13) and a flexible connector (14, 16) to one of the feed and return pipes. The other manifold has a duct connected via a sleeve at its lower end to the other feed or return pipe.

Description

The present invention relates to a heat exchanger of the radiator type for central heating installation comprising two vertical collectors to which are connected hydraulically several radiant, tubular, regularly spaced elements extending between said collectors preferably, perpendicular to the latter.

We know the state of the art of radiators of the aforementioned kind. Radiators known are intended by their collectors to be connected via a long tap and a short connection to the hot water supply line and to the water return line that includes the installation of central heating. Long tap connects with a fitting upper suitable for the upper end of the collector concerned while the tapping is short, through an appropriate lower connector, connects to the lower end of the other manifold. Of this way, the circulation of water in the radiator is established from one collector to another, schematically along a diagonal. This avoids any short circuit in the radiator and therefore any loss of yield. A flow control valve is arranged on the circulation circuit water at the upper connection. By the operation of this tap, it is possible to interrupt the hydraulic circuit in the radiator or to regulate the flow of the water current hot introduced into the radiator. Conventionally, the two taps are made by rigid metal pipes of relatively large section to minimize losses of charges.

The installation of the radiator with this type of installation poses several problems. Both connections determine once and for all the position of the radiator and the latter cannot be subsequently moved for example to better adapt its position to new ones environmental conditions. In addition, with this type of installation, it is no longer possible after establishment of the two taps to easily switch the position of the adjustment, for example, a better adaptation to these new conditions. Indeed, this change of position supposes, if one wishes to keep the valve in the upstream position by relation to the radiator, a change in the direction of water circulation in the latter and per channel Consequently, the replacement of the existing long tap by a short tap and the replacement of the existing short connection with a long connection. We therefore understand that this position change operation, simple in itself results in an intervention particularly tedious.

In addition, the value of the difference between the tap fittings must be relatively precise to easily establish the connection with the two collectors. Such precision is incompatible with the nature of the work to be carried out to carry out the tapping and, in the In most cases, the plumber is forced to deform them to achieve the connections. This difficulty of connection can still be amplified by a bad positioning of the radiator suspension elements on the wall. Indeed, these elements determine a second position for the radiator, which may be offset by compared to that determined by the nozzles.

So we see that the installation of a radiator, which is in itself a technically simple operation, is found delayed by difficulties due to dimensional inaccuracies difficult to avoid.

The present invention aims to overcome the drawbacks mentioned above not not by increasing the degree of dimensional accuracy in making the taps and in the installation of the suspension elements but by implementing a new type of radiator of a simplified installation, without requirement of precise positioning on the one hand of the two connections relative to each other and to the radiator support elements, and other part of the suspension elements relative to each other and to the radiator.

Another object of the invention is the implementation of a radiator whose position after stitching and after installation can be changed.

Another object of the present invention is the implementation of a radiator which does not require more for its connection to the central heating circuit, a long connection and a short connection but two short tappings, technically simpler to carry out and in a more economical, which can also be hidden by the radiator which greatly improves the aesthetic aspect of the installation.

Finally another object of the present invention is a radiator whose position of the valve adjustment can be reversed without requiring intervention at the level of two taps.

• l'un des collecteurs ou premier collecteur est constitué d'un premier conduit tubulaire et d'un second conduit tubulaire connectés hydrauliquement l'un à l'autre en partie supérieure par un raccord supérieur venant coiffer l'extrémité supérieure de chacun des conduits,
• le second conduit est connecté hydrauliquement aux éléments tubulaires radiants et est obturé en partie inférieure et le premier conduit est destiné à être relié hydrauliquement depuis un embout de raccordement en relation hydraulique avec son extrémité inférieure, à l'un des deux piquages par l'intermédiaire d'un flexible avec raccord terminal,
• et l'autre collecteur ou second collecteur est constitué d'au moins un conduit tubulaire connecté hydrauliquement aux éléments tubulaires radiants, ledit conduit étant destiné à être relié hydrauliquement depuis un embout de raccordement en relation hydraulique avec son extrémité inférieure. à l'autre piquage par l'intermédiaire d'un second flexible avec raccord terminal.

To this end the heat exchanger according to the invention, of the radiator type for central heating installation comprising several horizontal radiant tubular elements hydraulically connected by one of their ends to a vertical water supply collector and by the other to a vertical water recovery collector, the water supply collector being hydraulically connected by a supply nozzle to the hot water supply pipe of the installation and the recovery collector by the through a return connection to the water return pipe, so that the circulation of hot water through the radiant tubular elements can be established from the supply manifold to the recovery manifold and the heat is ceded to the surrounding medium by thermal transfer through the wall of the radiant tubular elements and the circulation of water in the radiator being established schematically lon a diagonal is essentially characterized in that:

• one of the collectors or first collector consists of a first tubular conduit and a second tubular conduit hydraulically connected to each other in the upper part by an upper connector covering the upper end of each of the conduits,
• the second conduit is hydraulically connected to the radiant tubular elements and is closed at the bottom and the first conduit is intended to be hydraulically connected from a connection endpiece in hydraulic relation with its lower end, to one of the two nozzles via a hose with terminal connection,
• and the other manifold or second manifold consists of at least one tubular conduit hydraulically connected to the radiant tubular elements, said conduit being intended to be hydraulically connected from a connection endpiece in hydraulic relation with its lower end. to the other connection via a second hose with terminal connection.

To connect the radiator to the central heating installation, two taps short are enough. The use of hoses to connect the two collectors to the central heating now allows the radiator to change position and facilitates the realization of these taps since no dimensional precision is required both for the position of the taps with respect to each other than with respect to the suspension elements of the radiator. In addition, the use of hoses allows the connection to be easily inverted. collectors at the two taps in order to change the direction of water circulation in the radiator. Preferably the first collector constitutes the supply collector and is connected by the connection end corresponding to the supply nozzle, the second collector being connected by the connection end corresponding to the return connection and constitutes the recovery collector.

According to another characteristic of the invention, the two conduits of the first collector are both connected to a hydraulic distribution valve having a valve body in which is bored a chamber in which open three through holes made in the valve body, the first and second drilling being in relation to the lower end of the two conduits and the other with the connection end piece, said valve comprising in the chamber a movable element movable between a first position according to which on the one hand, the hydraulic communication between the first tubular conduit and the nozzle connection is ensured and on the other hand the hydraulic communication between the second tubular conduit and the connecting piece is interrupted, and a second position according to which, on the one hand, the hydraulic communication between the first tubular conduit and the nozzle connection is interrupted and on the other hand the hydraulic communication between the second tubular conduit and the connecting piece is established.

The movable element of the valve will preferably be placed in the first position when the first collector must be connected to the supply nozzle and therefore constitutes the power collector. However, when this collector is intended to be connected to the return connection and therefore constitute the recovery manifold, the movable element of the valve will preferably be placed in the second position to minimize pressure losses in avoiding the return of water through the first conduit.

According to another characteristic of the invention, at the upper connection of the first manifold is associated with a globe valve, intended for the adjustment of the water flow between the first and the second conduit, the valve of said valve being able to be arranged in an interruption position of water circulation between the first and the second conduit.

It is sometimes necessary to reverse the position of the valve. So according to another characteristic of the invention, the second collector also consists of a first conduit tubular and a second tubular conduit partially hydraulically connected to each other upper by an upper fitting covering the upper end of each of the conduits, the second duct being hydraulically connected to the radiant tubular elements and the two second manifold conduits both connected to a hydraulic distribution valve comprising a valve body into which is bored a chamber into which open three through holes in the valve body, the first and second holes being in relation with the lower end of the two conduits and the other with the end piece connection, said valve comprising in the chamber a movable element displaceable between a first position according to which on the one hand the hydraulic communication between the first conduit tubular and the connection piece is ensured and on the other hand the hydraulic communication between the second tubular conduit and the connection piece is interrupted, and a second position according to which on the one hand the hydraulic communication between the first tubular conduit and the connection piece is interrupted and on the other hand the hydraulic communication between the second tubular conduit and the connection piece is established, the upper connection of each collector being designed to receive either a globe valve or a plug the mouth of the globe valve housing.

The upper connector, according to another aspect of the invention, consists of a body in which is practiced a cylindrical chamber, open on one of the faces of the body, in which chamber open first and second through holes intended to be brought in and kept in correspondence respectively with the first tubular conduit and the second manifold tubular conduit, a valve seat being provided in the chamber between the mouths of the two through holes, said cylindrical chamber being additionally provided, from its mouth on the face of the body, a thread intended to receive in screwing, according in this case, the threaded end of the blanking plug or the threaded part of an adjustment valve.

Thus each collector can receive in turn according to the need of the moment either the adjustment valve or the shutter plug.

In addition, whether or not fitted with a globe valve, the manifold can be connected to the supply nozzle the other collector being, of course, connected to the nozzle back. So we see all the flexibility of use that the provisions confer previously defined and in particular those of the valve. So several configurations are possible but it is desirable for optimal use that the water circuit in the whatever its direction, is established for the collector comprising the valve valve adjustment. first in one of its two conduits then in the other, and for the other manifold only in the second conduit to minimize pressure losses.

By operating the movable element of the valve, it is useful to be able to isolate the two pipes of the collector of the corresponding connection end piece. So according to another aspect of the invention, the movable element of the valve can be positioned by displacement in the chamber valve body, in a fully closed position whereby no communication hydraulic connection is established between the connection piece and the first and second holes of the valve body Thus the two pipes of the corresponding manifold are isolated from the nozzle corresponding. The radiator can therefore be hydraulically isolated from the two nozzles by placing the movable element of each valve according to the third position.

It is desirable to be able to simultaneously drain the two pipes of the collector. AT this effect the movable element of the valve, by displacement in the chamber of the valve body, is positionable in a drain position according to which the first and second holes of the valve bodies are simultaneously hydraulically connected to the connection piece.

The positions described above, which the movable element of the valve can occupy, are as it should be stable positions which cannot be modified by the effect of water pressure in the valve. The movable element can only be changed in position by the action of an appropriate tool operated by the user.

The valve, insofar as its movable element can occupy at least the two first positions, can be of any known type, but for the sake of simplification of manufacture and use the or each valve, according to another aspect of the invention, is of the type key and consists of a body in which is formed a cylindrical chamber in which lead to a first through hole and a second through hole both used in the wall of the body, the longitudinal axes of said holes being contained in the same geometric plane containing the longitudinal central geometric axis of the chamber, and said bores being positioned respectively opposite the first tubular conduit and the second tubular conduit of the associated manifold, said valve body being provided in the axis of the cylindrical chamber of a through hole in which engages the connection end piece and the valve key being constituted by a tubular casing of cylindrical shape delimiting a cylindrical hollow internal volume, said envelope comprising according to one of its two ends a water passage opening arranged in connection with the connection end piece and at the other end a watertight partition, shutter of the volume which it delimits, the wall tubular of the key also comprising, along a first cross section located in the axis of the first hole passing through the wall of the body and along a second straight section located in the axis of the second hole passing through the wall of the body, respectively at least one first radial through hole and a second radial through hole, the so-called first and second radial through holes being angularly offset relative to one another by angular value different from the value of the angular offset that may exist between the first piercing and the second piercing of the body and sufficient so that when one of the said piercing of the key is in partial or total communication with the corresponding through hole of the body to ensure hydraulic communication between the corresponding tubular conduit and the nozzle connection, the other is completely free from the corresponding hole in the wall of the body valve to prevent any hydraulic communication between the other tubular conduit of the associated collector and connection end piece.

By rotating the key in the chamber, it is easy to cross the two positions previously mentioned and to bring said key into the third position according to which the wall tubular that it forms, completely closes the first and second drilling of the valve body.

For the sake of simplification, the longitudinal axes of the first and second holes of the valve body are contained in the same geometrical plane containing the geometrical axis longitudinal median of the chamber.

To ensure the emptying of the two collector tubular conduits, the valve key along the cross section containing the axis of the first radial through hole, has a third radial through hole and along the cross section containing the axis of the second radial through hole, a fourth through radial hole, the value of the angular deviation between the third and fourth through holes being equal to the value of the angular difference between the first and second through holes of the valve body. In this way, the third and fourth radial through holes, by rotation of the key, can be brought simultaneously opposite the first and second through holes of the valve body. The the value of the difference between the first and second through holes of the body being zero, the third and fourth radial through holes of the key will be contained, each by their median longitudinal axis, in a common geometric plane, containing the median longitudinal axis of the key and the median longitudinal axis of the chamber.

For the sake of simplification of use, the four positions that the key can occupy of the valve are offset from each other by ninety degrees. So according to another aspect of the invention, the first and third through radial bores of the key are diametrically opposed while the second and fourth radial through holes are offset by ninety degrees.

For the operation of the rotating key, the end closure wall is provided an external imprint, which is intended to receive in the form of a socket for the transmission of a rotational movement, an imprint of complementary shape made in end of an operating tool.

According to another characteristic of the invention, the radiant tubular elements are arranged one above the other at constant intervals. So these tubular elements two by two determine a heat exchange channel in which the air is led to circulate and to warm up before being distributed in the enclosure.

In addition, in order to increase the exchange surface, each radiant tubular element, according to its cross section is longer than wide and has a large median axis along its cross section in the direction of the length of its section and a small median axis in the direction of its width, said element being arranged by the long axis of its cross section parallel to the axis of the channel formed.

To facilitate the circulation of air in the channels formed, each radiant element, according to another aspect of the invention is positioned so that the long axis of its cross section is tilted horizontally. Preferably, according to another characteristic of the invention, the large axis of the cross section of each radiant element is inclined from the rear of the radiator (wall side) towards the top and the front of the radiator (enclosure side). Thus the circulation of air through channels formed, established from the back and bottom to the front and top.

In order to increase the exchange surface, each radiant element according to that of its equatorial planes containing the long axis of its cross section have externally at least a radiant wing. In order to further increase the exchange surface, each tubular element according to another aspect of the invention, comprises two radiant, external, opposite wings, i.e. an upper front wing and a lower rear wing.

Each heat exchange channel is therefore defined by two rear lower wings, two radiant elements and two upper front wings.

• la figure 1 est une vue schématique, de face, d'un radiateur selon l'invention;
• la figure 2 est une vue de face d'un radiateur selon la forme préférée de réalisation;
• la figure 3 est demi-vue en coupe du radiateur selon un plan contenant les axes longitudinaux des éléments radiants;
• la figure 4 est une vue en coupe du radiateur selon la ligne AA de la figure 3;
• la figure 5 est une section droite d'un élément radiant;
• la figure 6 est une section droite de l'élément radiant supérieur;
• la figure 7 est une section droite de l'élément radiant inférieur;
• la figure 8 est une section droite d'un collecteur au niveau du raccordement de l'un des éléments radiants;
• la figure 9 est une vue de face du joint d'étanchéité interposée au niveau du raccordement de chaque élément radiant au collecteur;
• la figure 10 est une vue en coupe longitudinale d'une vanne;
• la figure 11 est une vue en coupe transversale d'une vanne selon la ligne BB de la figure 10;
• la figure 12 est une vue en coupe transversale d'une vanne selon la ligne CC de la figure 10;
• la figure 13 est une vue en coupe longitudinale d'un raccord supérieur équipé d'un robinet à soupape;
• la figure 14 est une vue en coupe longitudinale d'un raccord supérieur équipé d'un bouchon
• la figure 15A est une vue en perspective en éclaté d'un support ajustable en position;
• la figure 15B est une vue en perspective d'un support ajustable en position, équipé du raccord terminal de l'un des flexibles;
• la figure 16 montre en coupe un crochet de suspension.
• la figure 17 est une vue de face d'un crochet de suspension.

Other advantages and characteristics of the invention will appear on reading the description of a preferred embodiment given by way of non-limiting example with reference to the accompanying drawings in which:

• Figure 1 is a schematic front view of a radiator according to the invention;
• Figure 2 is a front view of a radiator according to the preferred embodiment;
• Figure 3 is a half sectional view of the radiator along a plane containing the longitudinal axes of the radiating elements;
• Figure 4 is a sectional view of the radiator along line AA of Figure 3;
• Figure 5 is a cross section of a radiant element;
• Figure 6 is a cross section of the upper radiant element;
• Figure 7 is a cross section of the lower radiant element;
• Figure 8 is a cross section of a manifold at the connection of one of the radiant elements;
• Figure 9 is a front view of the seal interposed at the connection of each radiant element to the manifold;
• Figure 10 is a longitudinal sectional view of a valve;
• Figure 11 is a cross-sectional view of a valve along line BB of Figure 10;
• Figure 12 is a cross-sectional view of a valve along the line CC of Figure 10;
• Figure 13 is a longitudinal sectional view of an upper connector fitted with a globe valve;
• Figure 14 is a longitudinal sectional view of an upper connector fitted with a plug
• FIG. 15A is an exploded perspective view of an adjustable support in position;
• FIG. 15B is a perspective view of an adjustable support in position, equipped with the end fitting of one of the hoses;
• Figure 16 shows in section a suspension hook.
• Figure 17 is a front view of a suspension hook.

As shown the radiator according to the invention for for example an installation of central heating, is fixed by suspension hooks 46 to one of the walls of an enclosure and comprises several horizontal radiant tubular elements 1, of oblong cross section arranged one above the other at constant intervals. These elements are connected hydraulically by one of their ends to a vertical water supply manifold 2 and by the other end to a vertical water recovery manifold 3. As can be seen in the figure 1, the water supply manifold 2 is hydraulically connected by a nozzle supply line 4 to the hot water supply line 5 of the installation and the recovery 3 by means of a return nozzle 6 to the water return pipe 7.

Each radiant element, by the long axis of its cross section, is inclined upwards from the rear of the radiator and forms with each adjacent radiant element a channel in which air is caused to circulate from the rear end facing the wall towards the front end in look at the speaker and warm up. To increase the length of this channel and therefore the time of the air to be heated, each radiant element, according to an equatorial geometric plane containing the long axis of its cross section is provided with an upper front wing 1a and a rear wing 1b lower. Furthermore, this arrangement gives the channel a sinuous appearance. further conducive to increasing the residence time of the air in the channel.

According to the preferred embodiment, the upper radiant tubular element is provided a horizontal wing 1c forming a return towards the rear, said horizontal wing, from its edge horizontal rear being extended downwards by a support wing 1d intended to come to rest by its lower horizontal edge in the hanging hooks 46 fixed to the wall. Preferably the horizontal wing 1c is rooted at the horizontal upper edge of the upper radiant wing 1a.

Still according to the preferred embodiment, the lower radiant element comprises a substantially vertical front wing 1e, directed downwards, coming to be connected to the upper edge horizontal of the upper wing 1a.

Each vertical collector 2 or 3 consists of a first tubular conduit 8, and of a second tubular conduit 9 both of rectangular cross section and having a wall vertical separation common developing perpendicular to the longitudinal axis of each radiant element. Opposite the partition wall, the conduit 9 has a transverse flat wall 9a provided with as many through holes as the radiator comprises tubular radiant elements 1. These tubular elements 1 by their ends are connect to the tubular conduits 9 via these holes. So that the connection hydraulic of each radiant element is sealed, the latter at each of its ends, receives a seal 21 formed by a sole 21a provided in its center with a hole crossing and possibly provided projecting from the central zone of its rear face, with a connection end drilled right through and through its drilling extend the drilling of the sole. The connecting piece is intended to be engaged in slight tightening in the corresponding drilling of the corresponding tubular conduit 9, the rear face of the sole 21a coming to bear against the external face of the transverse flat wall 9a. The front of the sole receives in support the end of the radiant element. The front side of the seal is provided with two lips 21b for centering the radiant element, intended to surround partially the periphery of the end of the latter. To secure the joint sealing the radiant element, the latter has at each of its ends in the channel of water passage it determines, two forms of chutes. These forms of chutes are parallel to the longitudinal axis of the radiant element and are arranged diametrically opposite. These forms of troughs are tapped at the end and each receive the rod threaded with a fixing screw engaged in a through hole in the sole 21A of the seal 21. By tightening the screw, the head of which is housed, for example, in a counterbore made in the sole from the rear face, the seal by its front face is firmly applied against the end of the radiant element 1.

Each collector 2, 3, along a geometric plane parallel to the transverse face 9a and located slightly in front of the latter, is provided on either side of the conduit 9 with two vertical wings 22, 23 for fixing the radiant elements 1. Each radiant element, 1 by the ends of each of its wings is intended to bear against the wings of the collectors and comprises on each of its wings, along the latter, a form of chute provided with each of its ends of a thread in which is screwed the rod of a screw engaged in a through hole made in the corresponding wing of the corresponding collector and coming resting by its head against said wing. Thus by tightening the screws, the seals 21 associated with each radiant element are applied by the rear face of their sole against the transverse wall 9a and the wings 1a and 1b of the radiant elements are applied respectively against the wings 22 and 23 of the collectors.

The rear wing 23 of each manifold has a right angle return 23a intended to come resting against the wall. This return at right angles 23a, located opposite the two conduits of the manifold, holding the wall at a distance from the rear end of the channels formed by the elements radiant 1.

Each collector has in the upper part an upper connection 10 in relation hydraulic with the two conduits 8, 9, this connector being able to receive either an adjustment valve 11 with valve, ie a closure plug 10a. In the embodiment shown in Figure 1, the valve regulating valve 11 equips the upper manifold fitting supply and occupies an upstream position relative to the water circuit in the radiator but it it goes without saying that this valve, according to an alternative embodiment, can be mounted in the fitting upper 10 of the recovery manifold and can occupy a downstream position relative to the water circuit in the radiator. At the bottom, each collector is fitted with a valve 12 distribution, stop and drain, comprising a connection end piece 13 to which is fixed by any known means, either, as the case may be, a supply hose 14 connected by a connector terminal 15 which it comprises, at the supply connection, either a return hose 16 connected by a terminal connector 17 which it comprises, at the return connection 6.

Preferably, each collector 2, 3 is associated with four external chutes each comprising end threads into which the fixing screws of the upper connection 10 and valve 12.

This radiator is furthermore provided with vertical trim parts 18 surrounding the collector, upper corner trim pieces 19, surrounding the upper fittings 10 and lower parts 20 of corner covering coming to surround the valves 12.

According to the preferred embodiment, each vertical covering piece has a curved cross section and includes a protrusion on its internal face, close to its front edge vertical, a trough shape, vertical coming to engage around the free vertical edge of the wing front 22. Furthermore, the rear vertical edge of the vertical trim piece has a shape hook intended to come to cooperate in shape engagement with a hook shape performed on the return 23a. This arrangement ensures the removable fixing of the covering part. 18 on both wings 22 and 23.

Each upper corner covering piece 19 forms a shell and is provided with a through hole coming opposite the corresponding upper fitting. This dressing room angle 19 is provided with a centering rim cooperating in form fitting with the upper part of the vertical trim piece and two centering pins engaging under the wing 1c respectively at the two angles that this wing forms with the front wing 1a and the rear wing 1c. The centering flange and the centering pins therefore ensure that the position of this part 19.

Each lower corner covering piece 20 also forms a shell and is provided projecting from its concave part of a tubular projection 20a. A cylindrical through hole is made along the median longitudinal axis of the tubular projection, this through through hole in the convex face of the lower corner trim piece. This corner piece is provided a centering rim intended to cooperate in form fitting with the trim part vertical 18 and in the concavity which it delimits, a horizontal wall 24 on which is fixed the valve 12. According to the preferred embodiment, the wall 24 is provided with four holes feed-throughs arranged respectively in the axis of the four troughs that the collector comprises corresponding and the valve body is also provided with four through holes positioned respectively in alignment with the through holes of the wall 24 and in aligning the trunking. The valve is fixed to the wall 24 and to the manifold by screws engaged in these holes and in the end threads of the trunking.

According to the preferred embodiment, each valve comprises a valve body 25 of parallelepipedal shape supported by its horizontal underside on the wall 24. By its horizontal upper face the valve body is brought against the lower end of the corresponding collector. In the valve body from one of the vertical faces of the latter is bored along a horizontal axis, a cylindrical chamber 26 into which open three through holes made in the valve body. The first and second holes through 27, 28 occupy a radial position relative to the axis of the chamber and are made in the valve body from the upper side of the latter. These two holes come respectively in alignment with the first and second duct 8, 9 of the manifold 2, 3 correspondent. Preferably, the median longitudinal axes of these two holes are arranged in the same geometric plane. The third through hole 29 occupies a axial position relative to the cylindrical chamber and receives the connection end piece 13. In the valve chamber is arranged a movable element 30, in the form of a key, constituted by a tubular casing of cylindrical shape defining a hollow internal cylindrical volume. The envelope is provided t along one of its two ends with a passage opening of water, arranged in relation to the connection piece 13 and at the other end of a partition sealed 31, for closing the internal volume which it defines. The part of the key corresponding to the watertight wall slightly protrudes from the corresponding vertical face of the body and is rotatably engaged in the tubular end piece 20a. This wall has an imprint external in the form of a slot with which is intended to cooperate in form fitting view of the transmission of a rotational movement, an imprint of complementary shape formed at the end of an operating instrument. The tubular wall of the key comprises, along a first cross section located in the axis of the first through bore 27 of the body, a first through bore 32, radial and along a second straight section located in the axis of the second through-hole 28 of the body, a second radial through-hole 33. These holes are angularly offset from each other by a value of 90 degrees. By rotation of the key is established the hydraulic communication either between the connecting piece 13 and the first conduit 8 of the manifold 2, 3 either between the connecting piece 13 and the second conduit 9 of the collector.

The key 30 of the valve 12 along the cross section containing the axis of the first bore 32 has a third radial hole passing through 34 radial and along the cross section containing the axis of the second through radial bore 33, a fourth through radial bore 35, the longitudinal axes of these two holes 34, 35 being contained in the same radial plane containing the axis of rotation of the key 30. Thus by rotation of the key, the third and fourth radial through holes are brought simultaneously opposite the first and second through holes 27 and 28 of the valve body to ensure communication between the two conduits 8, 9 with the connection end piece 13. Advantageously, the first 32 and third 34 through radial holes of the key are diametrically opposed while the second 33 and fourth 35 radial through holes are offset by ninety degrees. By rotation, the valve key can also be brought to the closed position of the through holes 27, 28 of the valve body. According to this position, the conduits 8, 9 of the corresponding manifolds are isolated from the connection piece 13.

As said previously, the upper connector 10 fitted to each manifold 2, 3 is consisting of a body 36 of parallelepiped shape, in which a chamber is bored cylindrical 37 open on one of the vertical faces of this body. The upper connection is positioned on the corresponding collector so that the opening in the chamber is arranged opposite the through hole that the corner trim piece 19 includes corresponding. In this room open a first 38 and a second 39 holes radial formed in the body of the fitting from the horizontal underside of the latter. These holes are in correspondence respectively with the first tubular conduit 8 and the second tubular conduit 9 of the manifold 2,3. Between the mouths of the two holes 38, 39 in chamber 37 is provided a seat for a valve. In addition room 37 is provided from its mouth on the face of the body, a thread intended to receive in screwing the threaded end of a plug 10a or the threaded part of the globe valve 11. This globe valve 11 for the purpose of regulating the water flow between the first bore 38 and the second 39 and consequently the water flow in the radiator.

The front wing of the lower radiant element projects from that of these two large internal faces to the volume defined by the radiator, a horizontal rule 41 to which are fixed in position adjustable, two horizontal supports 42 respectively receiving the two connecting pieces 15, 17 of the hoses 14, 16. The possibility of adjusting in position the connecting pieces 15, 17 allows the latter to be positioned in the axis of the taps correspondents 4, 6, the hoses 14, 16 being held by pins, behind and next to the front wing 1e, to be masked by the latter

According to the preferred embodiment, the rule 41 is provided with a projecting rim longitudinal 43, retention and each support piece 42 is secured by screws 44 to a stirrup 45 in the form of an inverted U engaged by one of its wings, on the ruler behind the protruding rim and bearing on the longitudinal free edge of this wing on said rule. By his soul, the stirrup is supported on the retention flange 43. The core of the stirrup is provided with a through thread in which engages in screwing the threaded rod of the screw 44 also engaged in a bore crossing made in the support 42. A spring 45 with non-contiguous turns is arranged around the screw rod in compression between the support piece 42 and the rule. The assembly as previously described authorizes the positioning of the support piece along the ruler, in height along the screw and at an angle to the slide by pivoting around the screw.

As said before, the radiator is suspended from two suspension hooks 46 attached to the wall.

According to the preferred embodiment, each suspension hook is constituted by a parallelepiped block provided from its upper face with a vertical slot 47. Under the vertical slot, perpendicular to the plane of the latter, a through hole is made in which is engaged the fixing screw 48 of the hook to the wall. In the vertical slot 47 is engaged the rear wing 1d of the upper radiant element 1. This wing comes to rest on the bottom of slot. The upper parts of the slot are rounded so as to facilitate the introduction of the wing 1d.

Finally the internal parts of the heat exchanger, i.e. those intended to be in contact with water receive a polyurethane coating.

It goes without saying that the present invention can receive all arrangements and variants of the field of technical equivalents without departing from its scope.

Claims (22)

Heat exchanger of the radiator type for central heating installation comprising several horizontal radiant tubular elements (1) hydraulically connected at one end to a vertical water supply manifold (2) and at the other end to a vertical manifold ( 3) for water recovery, the water supply collector (2) being hydraulically connected by a supply nozzle (4) to the pipe (5) for supplying hot water to the installation and the collector recovery (3) via a return nozzle (6) to the water return pipe (7), so that the circulation of hot water through the radiant tubular elements (1) can settle from the supply manifold (2) to the recovery collector (3) and the heat transferred to the surrounding medium by thermal transfer through the wall of the radiant tubular elements (1) and the circulation of water in the establishing radiator schematically along a diagonal, characterized in that: one of the manifolds or first manifold (2) (3) consists of a first tubular conduit (8) and a second tubular conduit (9) hydraulically connected to each other in the upper part by a connector upper (10) covering the upper end of each of the conduits (8), (9), the second conduit (9) is hydraulically connected to the radiant tubular elements (1) and is closed at the bottom and the first is intended to be hydraulically connected from a connection end piece (13) in hydraulic relation with its lower end, to the one of the two nozzles (4), (6) by means of a hose (14), (16) with terminal connection (15), (17), and the other manifold or second manifold (2), (3) consists of at least one tubular conduit hydraulically connected to the radiant tubular elements (1), said conduit being intended to be hydraulically connected from a connection end piece (13) in hydraulic relation with its lower end, to the other tap (4), (6) by means of a second hose (14), (16) with end fitting (15), (17). Heat exchanger according to claim 1, characterized in that the two conduits (8), (9) of the first manifold are both connected to a hydraulic valve (12) of distribution comprising a valve body (25) in which a chamber (26) is bored in which open three through holes made in the valve body, the first (27) and the second (28) bores being in connection with the lower end of the two conduits (8) (9) and the other with the connection end piece (13), said valve (12) comprising in the chamber a movable element (30) movable between a first position according to which on the one hand the hydraulic communication between the first tubular conduit (8) and the connection piece (13) is ensured and on the other hand the hydraulic communication between the second tubular conduit (9) and the connecting piece (13) is interrupted, and a second position in which on the one hand, the hydraulic communication between the first tubular conduit (8) and the end piece connection (13) is interrupted and on the other hand the hydraulic communication between the second tubular conduit (9) and the connecting piece is established (13). Heat exchanger according to any one of the preceding claims, characterized in that the upper connection (10) of the first manifold (2), (3), is associated with a globe valve (11), for adjusting the water flow between the first (8) and the second conduit (9), the valve of said valve (11) being able to be arranged in an interrupted position water circulation between the first (8) and the second (9) tubular conduit. Heat exchanger according to any one of the preceding claims, characterized in that the second manifold (2), (3) also consists of a first conduit tubular (8) and a second tubular conduit (9) hydraulically connected to each other in upper part (10) by an upper connector covering the upper end of each conduits, the second conduit being hydraulically connected to the tubular elements radiant (1) and the two conduits of the second collector (2), (3) both being connected to a hydraulic distribution valve (12) comprising a valve body (25) into which is bored a chamber (26) into which emerge three through holes made in the body valve, the first (27) and the second (28) holes being in connection with the end lower of the two conduits (8), (9) and the other with the connection end piece (13), said valve (12) comprising in the chamber (26) a mobile element (30) movable between a first position according to which on the one hand the hydraulic communication between the first tubular conduit (8) and the connection piece (13) is ensured and on the other hand the hydraulic communication between the second tubular conduit (9) and the connection end piece (13) is interrupted, and a second position according to which on the one hand the hydraulic communication between the first conduit tubular (8) and the connecting piece (13) is interrupted and on the other hand the communication hydraulic between the second tubular conduit (9) and the connecting piece (13) is established, the upper connection (10) of each manifold being provided to receive either a globe valve (11) or a sealing plug (10a). Heat exchanger according to claim 4, characterized in that the movable element (30) of the or each valve can be positioned in the chamber (26) of the valve body (25), in a completely closed position according to which no hydraulic communication is established between the connection end piece (13) and the first (27) and second (28) holes of the valve body. Heat exchanger according to claim 4 or claim 5, characterized in that the movable element (30) of the valve (12), by displacement in the chamber of the body of valve, is positionable in a drain position according to which the first (27) and second (28) valve body bores are simultaneously hydraulically connected to the end piece connection (13). Heat exchanger according to any one of claims 2 to 6, characterized in that the or each valve (12) is of the key type and consists of a body in which is a cylindrical chamber (26) into which a first through hole opens (27) and a second drilling (28) both made in the wall of the body, the axes longitudinal of said holes being contained in the same geometric plane containing the axis longitudinal median geometry of the chamber (26), and said holes being positioned respectively opposite the first tubular conduit (8) and the second tubular conduit (9) of the associated manifold (2), (3), said valve body (25) being provided in the axis of the chamber cylindrical, with a through hole in which engages the connection end piece (13) and the key (30) of the valve being constituted by a tubular casing of cylindrical shape delimiting a hollow, cylindrical internal volume, said envelope comprising according to one of its two ends a water passage opening, arranged in relation to the connection end piece (13) and at the other end a watertight partition (31), for closing off the volume which it delimits, the tubular wall of the key (30) further comprising, along a first cross section located in the axis of the first through bore (27) of the wall of the body (25) and according to a second cross section located in the axis of the second through bore (28) of the wall of the body (25), respectively a first radial through hole (32) and a second radial through hole (33), said first and second radial through holes (32), (33) being offset angularly with respect to each other by an angular value different from the value of the offset angular which may exist between the first bore (27) and the second bore (28) of the body (25) and sufficient so that when one of said holes (32, 33) of the key (30) is in communication partial or total with the corresponding through-hole (27, 28) of the body to ensure hydraulic communication between the corresponding tubular conduit (8, 9) and the end piece connection (13), the other is completely free from the corresponding bore in the wall of the body valve to prevent any hydraulic communication between the other tubular conduit (8, 9) of the associated collector and connection end piece (13). Heat exchanger according to claim 7, characterized in that the axes longitudinal of the first (27) and second (28) holes in the valve body are contained in a same geometrical plane containing the longitudinal median geometrical axis of the chamber (26). Heat exchanger according to claim 7 or claim 8, characterized in as the valve key (30), along the cross section containing the axis of the first through hole radial (32), has a third radial radial through-hole (34) and along the cross section containing the axis of the second through radial bore (33), a fourth radial bore crossing (35), the value of the angular difference between the third (34) and fourth (35) holes through being equal to the value of the angular difference between the first (27) and second (28) through holes in the valve body, so that by turning the key (30), the third (34) and fourth (35) radial through holes are brought simultaneously opposite the first (27) and second (28) through holes in the valve body Heat exchanger according to claim 9, characterized in that the first (32) and third (34) through radial holes of the key (30) are diametrically opposite while the second (33) and fourth (35) radial through holes are offset by ninety degrees. Heat exchanger according to any one of claims 7 to 10, characterized in that the end closure wall (31) which comprises the key (30) has an imprint external with which is intended to cooperate in form fitting, for the transmission of a rotational movement, an imprint of complementary shape made in end of an operating tool Heat exchanger according to any one of the preceding claims characterized in that the or each upper connection (10) consists of a body (36) in which is formed a cylindrical chamber (37) open on one of the faces of the body (36) of the fitting, into which chamber open a first (38) and a second (39) bores through, intended to be brought in and kept in correspondence, respectively with the first tubular conduit (8) and the second tubular conduit (9) of the manifold (2, 3), a seat (40) for valve being formed in the chamber (37) between the mouths of the two bores through (38, 39), said cylindrical chamber (37) being further provided from its mouth on the face of the body, with a thread intended to receive the threaded end of the blanking plug (10a) or the threaded part of a valve tap (11). Heat exchanger according to any one of the preceding claims, characterized in that the radiant tubular elements (1) are arranged one above the others at constant intervals and determine two by two of the heat exchange channels in which circulates the air. Heat exchanger according to claim 13, characterized in that each radiant tubular element (1), along its cross section, is longer than wide and present according to its straight section a large median axis in the direction of the length of its section and a small axis median in the direction of its width, the said element being arranged by the long axis of its section straight parallel to the axis of the channel formed. Heat exchanger according to claim 1,4 characterized in that each radiant tubular element (1), is positioned so that the long axis of its cross section is tilted horizontally. Heat exchanger according to claim 15, characterized in that each radiant tubular element is positioned so that the long axis of its cross section is inclined from the rear of the radiator to the top and towards the front of the radiator. Heat exchanger according to any one of claims 13 to 16, characterized in that each radiant tubular element (1) has an oblong cross section, the major axis of the straight section being inclined to the horizontal. Heat exchanger according to any one of the preceding claims, characterized in that each radiant element (1) according to that of its equatorial planes containing the long axis of its cross section has externally at least one radiant wing. Heat exchanger according to claim 18 characterized in that each radiant element has two opposite external radiant wings, namely an upper wing front (1a) and a rear lower wing (1b). Heat exchanger according to any one of the preceding claims, characterized in that the upper radiant tubular element (1) is provided with a horizontal wing (1c) forming back towards the rear, said horizontal wing (1c), from its horizontal rear edge being extended downwards by a support wing (1d) intended to come to rest by its edge lower horizontal in suspension hooks (46) fixed to the wall. Heat exchanger according to claim 19 and claim 20, characterized in that the horizontal wing (1c) is rooted at the horizontal upper edge of the radiant wing upper (1a). Heat exchanger according to any one of the preceding claims, characterized in that the lower radiant element comprises a front wing (1e) substantially vertical directed downwards, projecting from that of these two large faces, internal to the volume defined by the radiator, a horizontal rule (41) to which are fixed so adjustable in position, two horizontal supports respectively receiving the two pieces of connection (15), (17) of the hoses.

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