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EP 0 093 141 B1 |
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EUROPEAN PATENT SPECIFICATION |
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Mention of the grant of the patent: |
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09.10.1985 Bulletin 1985/41 |
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Date of filing: 29.10.1982 |
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International application number: |
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PCT/SE8200/358 |
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International publication number: |
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WO 8301/678 (11.05.1983 Gazette 1983/11) |
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HEAT EXCHANGER OF CONVECTOR TYPE
WÄRMEAUSTAUSCHER DES KONVEKTORTYPS
ECHANGEUR DE CHALEUR DU TYPE A CONVECTEUR
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Designated Contracting States: |
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AT BE CH DE FR GB LI LU NL SE |
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Priority: |
30.10.1981 SE 8106427
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Date of publication of application: |
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09.11.1983 Bulletin 1983/45 |
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Applicant: Nya Enacon Energi AB |
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S-199 33 Enköping (SE) |
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Inventor: |
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- Hiselius, Jan
S-260 83 Vejbystrand (SE)
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Representative: Kummelsten, Per-Arne |
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UPPSALA PATENTBYRA
P.O. Box 9013 750 09 Uppsala 750 09 Uppsala (SE) |
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Note: Within nine months from the publication of the mention of the grant of the European
patent, any person may give notice to the European Patent Office of opposition to
the European patent
granted. Notice of opposition shall be filed in a written reasoned statement. It shall
not be deemed to
have been filed until the opposition fee has been paid. (Art. 99(1) European Patent
Convention).
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[0001] The present invention relates to a space heater of convector type, i.e. a space heater
wherein the heating to the major part takes place by convection, this in contrast
to traditional radiation heaters, wherein the heating mainly takes place by radiation.
[0002] Convection heaters have many advantages compared to radiation heaters, and various
types of convection heaters have been developed. However, these known convection heaters
have several drawbacks, and the invention aims at eliminating or reducing the drawbacks
of known convection heaters.
[0003] The known convection heaters, which are closest to the invention, are based on a
so-called disc package essentially consisting of a number of tubes, wherein the heating
water flows, and a series of adjacent discs which are attached to the tubes in heat
transfering contact with the same and form vertical convection channels between adjacent
discs. In one known such convection heater, which is available on the market, the
very disc package serves as the cover of the convector. Therefore, the disc package
has to be optimized with regard to mechanical strength. As examples of drawbacks of
this construction can be mentioned that it is expensive per unit of power and complex
to produce, not the least since one has to- avoid, to the greatest possible extent,
heat distortion of the disc package, which as mentioned forms the very "cover" and
accordingly should have an aesthetically attractive appearance.
[0004] In another known, commercially available convection heater of the indicated type
a wall bracket is used, and the disc package is attached directly to this bracket,
a loose front also being used for hiding the disc package. Apart from requiring many
separate parts to be screwed together, this construction also has the drawback of
having a large volume per unit of power.
[0005] DE-A-2509191 discloses a heater/cooler which basically is a heat radiator rather
than a heat convector, and wherein the heat exchanger unit is in contact with the
cover and with firm attachment to the cover such as by welding.
[0006] A major problem of the prior art space heaters of the convector type, comprising
a convection heating unit (disc package) and a cover for the same, is that there is
no distinct separation between the heating and covering functions. This i.a. means
that it has been necessary to consider not only the heating aspects, but also the
visual or aesthetical aspects when designing the heating .unit. In particular, it
has not been possible to maximize the heating properties of the prior art heaters
due to transfer of thermal stress from the heating unit to the cover.
[0007] The present invention solves these and related problems by providing a convector
cover, which forms a continuous unit surrounding and essentially concealing the heating
unit, the latter being loosely suspended in the cover with the disc package or packages
being spaced apart from the cover, so that the thermal stress caused by temperature
variations in the heating unit is not transfered to the cover.
[0008] Secondary objects of the invention are i.a. to provide a convection heater having
high heating effect per unit of volume, resulting in a small overall size, which generally
is desirable. This property is especially interesting since the development in the
heating technology is towards increased use of low temperature systems (surface ground
heat, solar heat, etc.), and the invention makes it possible to maintain a small size
of the convection heater even at a low temperature of the heating medium. Another
object of the invention is to obtain the greatest possible effect of a given amount
of material for the disc system which - in combination with manufacturing simplicity
- makes the product less expensive and of lighter weight. In another aspect the invention
aims at providing a convection heater which can easily be mounted at the place of
use. A further, and related, object is to provide a convection heater which is built
up from a small number of multifunctional parts, which e.g. can be turned so that
the same disc package can be used for right hand and left hand mounting in one and
the same cover, make it possible to mount both a single and a double disc package
in one and the same cover, provide for convenient exchange of the cover and the disc
package when damaged, etc., which - in addition to the simplicity of mounting - offers
advantages as to stock- keeping. In a further aspect the invention aims at providing
a convection heater which because of its low heat contents (a small amount of material,
a small volume of circulating water) is energy saving and permits rapid and adaptive
temperature control, this in contrast to closed systems having high heat contents.
In summary, the invention thus aims at providing an overall solution of the problem
of providing a convection heater which is cheap, efficient and simple from many aspects.
[0009] These and other objects of the invention are achieved by giving a convection heater
the characteristic features which are indicated in the subsequent claims and are explained
further below with reference to the enclosed drawings, wherein
Figure 1 is a pespective view of one embodiment of a convection heater according to
the invention arranged for wall-mounting,
Figure 2 is schematic view in longitudinal section of the convection heater of Fig.
1 (with the midportion left out),
Figure 3 is a schematic bottom view of a wall- mounted convection heater according
to the invention,
Figure 4 is a perspective view of two adjacent discs for the convection heater according
to the invention,
Figure 5 is a perspective view showing two convection heaters according to the invention
interconnected for floor-mounting, and
Figure 6 is a bottom view of an alternative embodiment of the convection heater according
to the invention, provided with double disc packages.
[0010] The convection heater according to the invention shown in Figures 1 to 3 comprises
a convector cover 1 in which there is a disc package 2 comprising a plurality of adjacent
convector discs 2a, 2b ....... 2n. The specific design of the discs will be explained
further below in connection with Fig. 4. The disc package 2 is carried by a tube system
3 for circulation of the hot water forming the heat source. In the embodiment shown
in Figs. 1-3 the tube system 3 comprises two substantially parallel tube parts 3a
and 3b extending through the disc package 2 in close contact therewith. The tubes
3a and 3b are series connected by means of a coupling part 4, and they open into two
couplings 5a and 5b respectively for connection to conventional fed water conduits.
At the interconnection between the tube branches 3a and 3b a thermostate is inserted
into the tube system in a manner which is per se conventional, for adjusting the flow
in the system in relation to the adjustment of a thermostate setting knob 7. At the
thermostate end of the tube system the same is provided with a screw receiving piece
8 for simple attachment thereof to the cover 1 by means of a screw 9. The tube system
3 is further in per se conventional manner provided with a de-airator 10, which in
the illustrated embodiment is interconnected between the tube part 3a and the coupling
5a, i.e. at the opposite end compared to the thermostate 6, 7. The de-airator 10 has
a valve body 11 passing through a corresponding opening in the cover 1. The valve
body 11 serves as a second suspension point for the tube system 3 (with the attached
disc package 2) in the cover 1.. Because the valve body 11 can slide freely in the
longitudinal direction in a corresponding opening in the cover, no thermal stress
is transferred from the tube system 3/the disc package 2 to the cover 1, which otherwise
would suffer the risk of being distorted. Of course, the mobile suspension of the
tubes/disc package does not have to be by means of the de-airator valve body 11 -
although this has proven to be especially advantageous - but one can as an alternative
make use of any separate suspension body on the tube system, which can move freely
in the longitudinal direction in a corresponding opening in the cover.
[0011] In order to ensure correct orientation of the tube system 3/the disc package 2 within
the cover it is preferred to provide suitable guide means at a further point. As is
best seen from Fig. 3 the tube system is, in the shown embodiment, close to the connection
end 5a provided with a guide tongue 12 projecting in the longitudinal direction of
the convector and being arranged in a corresponding slot 13 in the cover 1. Correspondingly
as for the valve body 11, the guide tongue 12 is arranged to move freely in the slot
13 in order not to transfer thermal stress to the cover.
[0012] The cover 1, which forms part of the convection heater according to the invention,
is formed as an integral unit and thus does not require mounting of separate parts,
as is the case in some known convection heaters. The cover 1 essentially consists
of a front plate 1a, two side plates 1b and 1c respectively, a top grid 1d having
a large opening area for discharging heated air, and inwardly folded edge portions
1e at the bottom side. The disc package 2 (and the tube system 3) in this manner become
substantially invisible from the outside. This means i.a. that the disc package 2
does not have to be designed and dimensioned with regard to visual aspects, but can
be designed in a manner maximizing the heating aspects.
[0013] As mentioned above one of the advantages of the convection heater according to the
invention is that the tube system 3/the disc package 2 can be mounted in a reversed
position in one and the same convector cover 1. To this end the side plate 1b is not
only provided with holes for receiving the thermostate 6, 7 and the attachment screw
9, but also with a hole for receiving the suspension valve body 11 (or any alternative
separate suspension body), suitably covered by a discreet cover plate 14. In analogous
manner the side plate 1c is provided with holes for receiving the thermostate 6, 7
and the screw 9, which holes are suitably covered with corresponding discreet cover
plates 15 and 16 respectively. For the analogous purpose the bottom edge 1 e at the
side plate 1 is provided with a slot 13a (corresponding to the slot 13) for receiving
the guide tongue 12 when reversing the tube system 3/disc package 2. Of course, these
through-holes do not have to be made in advance, but they can be provided in connection
with the mounting, the need for cover plates then being eliminated.
[0014] The cover 1 is finally provided with wall brackets 17 which preferably have a special
design for facilitating the mounting of the convection heater. According to this preferred
embodiment the brackets 7 have the form of profile lists, in which holes for screws
or analogous fastening means 18 are provided. The screw holes in the attachment lists
17 are inclined inwards, so that the screws etc. are easily accessible for attachment
to a wall V without being hindered by the cover 1, in spite of the fact that the attachment
lists 17 are essentially inside the plane of the side plates 1b and 1c respectively
(see Fig. 3). In this manner there is obtained a very simple and rapid mounting of
the convector, while at the same time the attachment lists 17 to a great extent are
concealed behind the convector. The inclined nailing also means that the fastening
becomes very stable, and there is no need for any mid- support.
[0015] The convection heater according to the invention can be connected to a single-tube
feed water system (i.e. the couplings 5a and 5b are connected. to one and the same
water feed tube) as well as to a double-tube feed water system (i.e. the couplings
5a and 5b are connected to one feed tube each). The most essential difference between
these two types of feed water systems is that, in the former case, a comparatively
great part of the supplied hot water has to by-pass the tube system 3. In order to
facilitate the shifting between these feed systems, the convection heater according
to the invention is preferably provided with a by-pass conduit 19 at the couplings
5a and 5b. The conduit 19 is provided with a valve which can easily be adjusted from
the exterior by means of a set screw 20. In known convection heaters one has to exchange
a corresponding valve for changing between the single-tube and the double-tube systems,
but in this case it is sufficient to turn the screw between two marked positions,
e.g. by turning the screw 20 by 90°.
[0016] An essential part of the convection heater according to the invention is the design
of the discs and the disc package 2, and this aspect will be explained further in
connection with Fig. 4. This Figure shows two adjacent convector discs 2a and 2b.
Each disc substantially consists of a thin metal plate of e.g. aluminum, which has
been folded and provided with two substantially trapezoidal corrugations 21 and 27
and substantially perpendicular side portions 23 and 24 respectively. Each side portion
23 and 24 terminates in a short, inwardly extending abutment portion 25 and 26 respectively.
In the planar mid- portions 27 of the discs there are punched-out through-holes for
the tubes 3a and 3b. These through-holes are provided with contact collars 28a and
28b respectively, formed during the punching operation.
[0017] As mentioned above it is according to the invention essential that the discs 2a,
2b, etc. are thin and have comparatively large surface areas, and that adjacent discs
between themselves form a channel 28, which is closed at the sides and through which
the air to be heated passes by self- draft ("chimney effect"). In the shown, especially
preferred embodiment the discs have a thickness in the range of about 0.2 to 0.35
mm, which has proven to be optimal saving of material and a good efficiency. The convection
channels 28 are formed in that the abutment edge 25 of one disc abuts a second abutment
edge 29 of an adjacent disc. For optimal convection flow it is essential that the
corrugations or folds 21 and 22 extend in the longitudinal direction of the channel
28. Another essential factor for the efficiency of the convection heater according
to the invention is the graduation d, i.e. the distance between two adjacent discs.
The graduation optimum i.a. depends on the disc width b, the disc height h and the
design of the grooves 21, 22. According to the invention the graduation d should preferably
be 10-30% of the disc width b and preferably 3-12% of the height h in the shown embodiment
comprising two grooves. Especially advantageous values of the discs is a graduation
d of about 10 mm for disc width of about 50 mm. The optimal height h is then about
200 mm, but very good results are, for example, also achieved with heights down to
about 100 mm and up to about 300 mm.
[0018] Another essential condition for achieving high efficiency in the convection heater
according to the invention is that the discs are firmly secured to the tubes 3a, 3b,
in which the heat carrying water circulates, so as to provide good heat transfer between
the tubes and the discs. This is suitably achieved in that a desired number of discs
are threaded onto the tubes 3a, 3b and kept in contact with each other, the tubes
then being expanded, e.g. mechanically, in a manner known per se. In doing so one
does not only achieve good contact between the tubes and the discs, but also that
the discs are secured relative to each other while forming the convection channels
28.
[0019] Fig. 5 illustrates a further example of the flexibility of the convector system according
to the invention, viz. how two convection heaters in simple manner can be combined
for floor-mounting (in contrast to wall-mounting according to Fig. 3) using the same
cover as earlier described. Two covers 1 (with the tube system 3 and disc package
2 suspended therein) are arranged with the backs facing each other, so that the planar
attachment surfaces 17a of the attachment lists 17 contact each other. A floor support
30 comprises a hollow vertical holder body 31, which at the bottom is secured to a
floor attachment plate 32 and at the top has a cover plate 33. The cavity formed in
the body 31 is adapted to receive the attachment lists 17 of the two covers 1, with
the surfaces 17a thereof contacting each other for stability of the joint. The attachment
lists 17 are secured relative to each other and to the holder body 31 in suitable
manner, e.g. by means of bolted joints (not shown). Although both convectors in Fig.
5 can be connected separately to feed water conduits, it is preferred to interconnect
the two convectors, e.g. by means of the connections 5a, 5b, so that the connection
to the feed water conduits is similar to that of a separate convector. The interconnection
of the two convectors can be designed in analogy with that which will be described
in connection with Fig. 6.
[0020] Fig. 6 further illustrates the flexibility of the convector system according to the
invention. In this embodiment two disc packages 2' and 2" are mounted side-by-side
in a common cover 1, which can be identical with the cover used in the preceding embodiments.
The convector shown in Fig. 6 is designed fully in analogy with the convector according
to Figs. 2 and 3, which only has one disc package 2. The differences are that in this
case dual upper conduits 3'a and 3"a and dual lower conduits 3'b and 3"b are utilized.
Further, the lower tubes 3'b and 3"b are interconnected via a tube bend 3c, the lower
tube 3'b is connected to the upper tube 3"a via a tube bend 3d, and the upper tube
3'a is connected to the upper tube 3"a via a tube bend 3e, to which also the thermostate
7 is connected. It should in particular be noted that the "dual convector" according
to Fig. 6 utilizes the same cover having the same through-openings for thermostate,
attachment screw and de-airation valve or the like, and also the same guide slots
(it should, however, be noted that Fig. 6 shows a somewhat modified location of these
through-holes as an alternative). Also the dual convector according to Fig. 6 can
thus be reversed for right hand or left hand mounting.
1. A space heater of convector type comprising at least one disc package, a tube system
which carries the disc package and through which hot water is arranged to flow, each
disc package comprising a plurality of parallel discs (2a .... n), which are attached
to the tube or tubes in heat transferring contact therewith, adjacent discs contacting
each other and forming vertical convection channels for heated air therebetween, characterized
by a convector cover (1), which forms a continuous unit and surrounds and essentially
conceals the tube sysem (3) and the disc package or packages (2) carried thereby,
and in that the tube system (3) with the disc package or packages (2) carried thereby
is loosely suspended in the cover (1), with the disc package or packages (2) spaced
apart from the cover (1), in a manner such that thermal stress caused by temperature
variations in the tube system and the disc package or packages is not transferred
to the cover.
2. A space heater according to claim 1, characterized in that the tube system (3)
with the disc package or packages (2) carried thereby is suspended in the convector
cover (1) in one suspension point at each end.
3. A space heater according to claim 1 or 2, characterized in that one end of the
tube system (3) with the disc package or packages (2) carried thereby is provided
with a suspension body (11) which is freely suspended in a corresponding opening in
the cover.
4. A space heater according to claim 1, 2 or 3, characterized in that the cover comprises
a front plate (1 a) and two opposite side plates (1 b, 1c), in which the tube system
(3) and disc package or packages (2) are suspended, and in that an attachment list
(17) for fastening the cover to a wall (V) or the like is provided at each side end
of the cover, substantially parallel with the corresponding side plate (1b and 1c
respectively).
5. A space heater according to claim 4, characterized in that the outer edge of each
attachment list (17) is located substantially in the extension of the plane of the
corresponding side plate (1 b and 1c respectively) and is provided with at least one
inwardly inclined hole for fastening means (18) of the screw type or the like, so
that the fastening means can be inserted through the hole by inclined fastening without
being hindered by the side plates (1b, 1c).
6. A space heater according to claim 4 or 5, characterized in that each side plate
(1b, 1c) is provided with through-openings both for said stationary and said loose
suspension of the tube system/disc package or packages, and with through-openings
for optional further devices such as a thermostate (7), and in that the unit formed
by tube system (3) and disc package or packages (2) is symmetrical in relation to
the suspension points (9 and 11 respectively), whereby said unit can be right hand
or left hand suspended in the cover (1).
7. A space heater according to any one of the preceding claims, characterized in that
each disc contained in said disc package or packages is provided with at least two
longitudinal area- increasing depressions (21, 22) and two end portions (23, 24),
which extend substantially in parallel with the corresponding tubes (3a, 3b) and which
contact corresponding portions of an adjacent disc, and in that each disc has a thickness
in the range of about 0.2-0.35 mm, a distance between adjacent discs of about 10-30%
of the disc width, and preferably about 3-12% of the disc height.
8. A space heater according to any one of the preceding claims, characterized in that
the tube system comprises two series connected, substantially parallel tube sections
(3a, 3b), each disc (2a, 2b ....) being arranged on both of said tube sections, and
in that the free ends of the tube sections are arranged to be connected to a feed
water conduit.
9. A space heater according to claim 8, characterized in that a second tube section
(3'a, 3'b), having a second disc package (2') is series connected with the first tube
system (3).
10. A space heater according to any one of the preceding claims, characterized in
that the tube system (3) is provided with a de-airation valve, the valve body (11)
of which serves as said suspension body for free suspension of the tube system (3)
il1 the cover (1).
11. A space heater according to any one of the preceding claims, characterized in
that it comprises a by-pass conduit (19) for by-passing hot feed water directly from
the inlet end (5a) of the tube system (3) to its outlet end (5b), and in that the
by-pass conduit is provided with a valve, which from the outside of the system can
be adjusted between two positions, viz. one position corresponding to connection of
the space heater to a dual-tube feed system, and a second position corresponding to
connection of the heater to a single-tube feed water system.
1. Raumheizer vom Konvektortyp, umfassend wenigstens eine Plattenpackung, eine Rohranordnung,
welche die Plattenpackung trägt und welche dazu vorgesehen ist, heißes Wasser hindurchfließen
zu lassen, wobei jede Plattenpakkung eine Mehrzahl von parallelen Platten (2a ...n)
umfaßt, die an dem Rohr oder den Rohren in Wärmeübertragungskontakt mit demselben
bzw. denselben angebracht sind, und obei benachbarte Platten einander berühren und
vertikale Konvektionskanäle für erwärmte Luft zwischen denselben bilden, gekennzeichnet
durch eine Konvektorabdeckung (1), die eine kontinuierliche-Einheit bildet und die
Rohranordnung (3) und die davon getragene Plattenpackung oder-packungen (2) umgibt
sowie im wesentliche verdeckt, und daß die Rohranordnung (3) mit der davon getragenen
Plattenpackung oder den davon getragenen Plattenpackungen (2) bei Anordnung der Plattenpakkung
oder -packungen (2) im Abstand von der Abdeckung (1) lose in der Abdeckung (1) in
einer solchen Weise aufgehängt ist, daß Wärmebelastung, die durch Temperaturänderungen
in der Rohranordnung und der Plattenpackung oder den Plattenpackungen verursacht wird,
nicht auf die Abdeckung übertragen wird.
2. Raumheizer nach Anspruch 1, dadurch gekennzeichnet, daß die Rohranordnung (3) mit
der davon getragenen Plattenpackung oder den davon getragenen Plattenpackungen (2)
in der Konvektorabdeckung (1) in einem Aufhängungspunkt an jedem Ende aufgehängt ist.
3. Raumheizer nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß das eine Ende der
Rohranordnung (3) mit der davon getragenen Plattenpakkung oder den davon getragenen
Plattenpackungen (2) mit einem Aufhängungskörper (11) versehen ist, der in einer entsprechenden
Öffnung in der Abdecklung frei aufgehängt ist.
4. Raumheizer nach Anspruch 1, 2 oder 3, dadurch gekennzeichnet, daß die Abdeckung
eine Vorderplatte (1a) und zwei entgegengesetzte Seitenplatten (1b,1c) umfaßt, worin
die Rohranordnung (3) und die Plattenpackung oder -pakkungen (2) aufgehängt sind,
und daß eine Befestigungsleiste (17) zum Befestigen der Abdeckung an einer Wand (V)
o.dgl. an jedem Seitenende der Abdekkung im wesentlichen parallel zur entsprechenden
Seitenplatte (1 b bzw. 1c) vorgesehen ist.
5. Raumheizer nach Anspruch 4, dadurch gekennzeichnet, daß sich der äußere Rand jeder
Befestigungsleiste (17) im wesentlichen in der Verlängerung der Ebene der entsprechenden
Seitenplatte (1 b bz.w 1c) befindet und mit wenigstens einem nach einwärts geneigten
Loch für Befestigungsmittel (18) vom Schraubentyp o.dgl. versehen ist, so daß die
Befestigungsmittel durch das Loch durch geneigtes Befestigen eingefügt werden könnnen,
ohne durch die Seitenplatten (1b,1c) behindert zu werden.
6. Raumheizer nach Anspruch 4 oder 5, dadurch gekennzeichnet, daß jede Seitenplatte
(1 b,1 c) mid Durchgangsöffnungen sowohl für die stationäre als auch die lose Aufhängung
der Rohranordnung/Plattenpackung oder -packungen versehen ist, und mit Durchgangsöffnungen
für wahlfreie weitere Einrichtungen, wie einen Thermostat (7), und daß die Einheit,
die von der Rohranordnung (3) und der Plattenpackung oder den Plattenpakkungen (2)
gebildet ist, symmetrisch in Beziehung zu den Aufhängungspunkten (9 bzw. 11) ist,
so daß diese Einheit dadurch rechter Hand oder linker Hand in der Abdeckung aufgehängt
werden kann.
7. Raumheizer nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß
jede Platte, die in der Plattenpackung oder den Plattenpackungen enthalten ist, mit
wenigstens zwei flächenerhöhenden Langsvertiefungen (21,22) und zwei Endteilen (23,24),
die sich im wesentlichen parallel zu den entsprechenden Rohren (3a,3b) erstrecken
und die entsprechende Teile einer benachbarten Platte berühren, versehen ist, und
daß jede Platte eine Dicke im Bereich von etwa 0,2 bis 0,35 mm hat, wobei der Abstand
zwischen benachbarten Platten etwa 10 bis 30% der Plattenbreite und vorzugsweise etwa
3 bis 12% der Plattenhöhe beträgt.
8. Raumheizer nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß
die Rohranordnung (2) in Reihe verbundene, im wesentlichen parallele Rohrabschnitte
(3a,3b) umfaßt, wobei jede Platte (2a,2b ...) auf den beiden Rohrabschnitten angeordnet
ist, und daß die freien Enden der Rohrabschnitte so angeordnet sind, daß sie mit einer
Speisewasserleitung verbindbar sind.
9. Raumheizer nach Anspruch 8, dadurch gekennzeichnet, daß ein zweiter Rohrabschnitt
(3'a, 3'b), der eine zweite Plattenpackung (2') hat, in Reihe mit der ersten Rohranordnung
(3) verbunden ist.
10. Raumheizer nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß
die Rohranordnung mit einem Entlüftungsventil versehen ist, dessen Ventilkörper (11)
als Aufhängungskörper für die freie Aufhängung der Rohranordnung (3) in der Abdeckung
(1) dient.
11. Raumheizer nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß
er eine Nebenschlußleitung (19) zum Nebenschlie- ßen von heißem Speisewasser direkt
vom Einlaßende (5a) der Rohranordnung (3) zu deren Auslaßende (5b) umfaßt, und daß
die Nebenschlußleitung mit einem Ventil versehen ist, das von der Außenseite der Anordnung
her zwischen zwei Positionen verstellbar ist, nämlich einer Position, die der Verbindung
des Raumheizers mit einer Dualrohrspeiseanordnung entspricht, und einer zweiten Position,
die der Verbindung des Heizers mit einer Einzelrohrspeisewasseranordnung entspricht.
1. Dispositif de chauffage d'espace du type convecteur comprenant au moins un groupe
de disques, un système tubulaire qui porte le groupe de disques et par l'intermédiaire
duquel l'eau chaude peut circuler, chaque groupe de disques comprenant une pluralité
de disques parallèlles (2a, ... n) qui sont fixés au tube ou aux tubes en contact
de transfert de chaleur avec eux, les disques adjacents étant en contact mutuel et
définissant entre eux des canaux verticaux de convection pour l'air chauffé, caractérisé
en ce qu'il comporte un capot (1) de convecteur qui constitue une unité continue et
entoure et dissimule sensiblement le système tubulaire (3) et le groupe ou les groupes
(2) de disques portés par ce système, et en ce que le système tubulaire (3) avec le
groupe our les groupes (2) de disques qu'il porte est suspendu librement dans le capot
(1), le groupe ou les groupes (2) de disques étant espacés du capot (1), de sorte
que la contrainte thermique engendrée par les variations de température dans le système
tubulaire et le groupe ou les groupes de disques n'est pas transmise au capot.
2. Dispositif de chauffage d'espace suivant la revendication 1, caractérisé en ce
que le système tubulaire (3) avec le groupe ou les groupes (2) de disques qu'il porte
est suspendu dans le capot (1) du convecteur en un seul point de suspension à chaque
extrémité.
3. Dispositif de chauffage d'espace suivant la revendication 1 out 2, caractérisé
en ce qu'une extrémité du système tubulaire (3) avec le groupe ou les groupes (2)
de disques qu'il porte est munie d'un organe de suspension (11) qui est suspendu librement
dans une ouverture correspondante du capot.
4. Dispositif de chauffage d'espace suivant la revendication 1, 2 ou 3, caractérisé
en ce que le capot comprend une plaque avant (1a) et deux plaques latérales opposées
(1b,1c), dans lesquelles le système tubulaire (3) et le groupe ou les groupes de disques
(2) sont suspendus, et en ce qu'une languette de fixation (17) pour attacher le capot
à un mur (V) ou autre est prévue à chaque extrémité latérale du capot, sensiblement
parallèlement à la plaque latérale correspondante (1 b et 1c respectivement).
5. Dispositif de chauffage d'espace suivant la revendication 4, caractérisé en ce
que le bord extérieur de chaque languette de fixation (17) est situé sensiblement
dans le prolongement du plan de la plaque latérale correspondante (1b et 1c respectivement)
et comporte au moins un trou incliné vers l'intérieur pour des moyens de fixation
(18) du type à vis ou analogue, de sorte que les moyens de fixation peuvent être insérés
à travers le trou par fixation inclinée sans être gênés par les plaques latérales
(1b, 1c).
6. Dispositif de chauffage d'espace suivant la revendication 4 ou 5, caractérisé en
ce que chaque plaque latérale (1 b,1c) comporte des trous traversants à la fois pour
la suspension fixe et la suspension libre du système tubulaire/groupe ou groupes de
disques, et des trous traversants pour d'autres dispositifs éventuels tels qu'un thermostat
(7), et en ce que l'ensemble constitué par le système tubulaire (3) et le groupe ou
les groupes (2) de disques est symétrique par rapport aux points de suspension (9
et 11 respectivement), de sorte que cet ensemble peut être suspendu du côté droit
ou du côté gauche dans le capot (1).
7. Dispositif de chauffage d'espace suivant l'une quelconque des revendications précédentes,
caractérisé en ce que chaque disque contenu dans le groupe ou les groupes de disques
comporte au moins deux dépressions longitudinales (21,22) d'augmentation de surface
et deux parties d'extrémité (23,24) qui s'étendent sensiblement en parallèle avec
les tubes correspondants (31,3b) et qui viennent en contact avec des parties correspondantes
d'un disque adjacent, et en ce que chaque disque a une épaisseur comprise entre 0,2
et 0,35 mm environ, la distance entre des disques adjacents étant de l'ordre de 10
à 30% de la largeur du disque et de préférence de l'ordre de 3 à 12% de la hauteur
du disque.
8. Dispositif de chauffage d'espace suivant l'une quelconque des revendications précédentes,
caractérisé en ce que le système tubulaire comprend deux éléments de tube (3a,3b)
sensiblement parallèles et raccordés en série, chaque disque (2a,2b ...) étant disposé
sur ces deux éléments de tube, et en ce que les extrémités libres des éléments de
tube sont prévues pour être raccordées à une conduite d'eau d'alimentation.
9. Dispositif de chauffage d'espace suivant la revendication 8, caractérisé en ce
qu'un deuxième élément de tube (3'a,3'b), portant un deuxième groupe (2') de disques,
est raccordé en série avec le premier système tubulaire(3).
10. Dispositif de chauffage d'espace suivant l'une quelconque des revendications précédentes,
caractérisé en ce que le système tubulaire (3) comporte une soupape de purge d'air,
dont le corps de soupape (11) sert d'organe de suspension pour la suspension libre
du système tubulaire (3) dans le capot (1).
11. Dispositif de chauffage d'espace suivant l'une quelconque des revendications précédentes,
caractérisé en ce qu'il comprend un conduit de contournement (19) pour dériver l'eau
chaude d'alimentation directement de l'extrémité d'entrée (5a) du système tubulaire
(3) à son extrémité de sortie (5b), et en ce que le conduit de contournement est muni
d'une vanne qui peut être réglée de l'extérieur du système entre deux positions, à
savoir une position correspondant au raccordement du dispositif de chauffage d'espace
à un système d'alimentation à deux tubes, et une deuxième position correspondant au
raccordement du dispositif de chauffage à un système d'eau d'alimentation à un seul
tube.