EP1574799B1 - Echangeur de chaleur à plaques avec chauffage indirect - Google Patents

Echangeur de chaleur à plaques avec chauffage indirect Download PDF

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Publication number
EP1574799B1
EP1574799B1 EP04005542A EP04005542A EP1574799B1 EP 1574799 B1 EP1574799 B1 EP 1574799B1 EP 04005542 A EP04005542 A EP 04005542A EP 04005542 A EP04005542 A EP 04005542A EP 1574799 B1 EP1574799 B1 EP 1574799B1
Authority
EP
European Patent Office
Prior art keywords
heating
plate
heating element
radiator according
channels
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP04005542A
Other languages
German (de)
English (en)
Other versions
EP1574799A1 (fr
Inventor
Vladan Prof. Dr. Petrovic
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Phoenix Metall GmbH
Original Assignee
Phoenix Metall GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Phoenix Metall GmbH filed Critical Phoenix Metall GmbH
Priority to AT04005542T priority Critical patent/ATE393905T1/de
Priority to DE502004006995T priority patent/DE502004006995D1/de
Priority to EP04005542A priority patent/EP1574799B1/fr
Publication of EP1574799A1 publication Critical patent/EP1574799A1/fr
Application granted granted Critical
Publication of EP1574799B1 publication Critical patent/EP1574799B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/0226—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with an intermediate heat-transfer medium, e.g. thermosiphon radiators

Definitions

  • the invention relates to a panel radiator, consisting of one or more heating plates, which is filled with chemically treated water or other Wärnieieritlüsstechnik, filling liquid, wherein in the heating plate, a heating element is installed, which serves to transfer heat from the heating water to the filling liquid in the heating plate, wherein the heating water flows through the heating element as a heat exchanger and transfers its heat to the filling liquid, according to the preamble of claim 1.
  • the convective surfaces of a panel heater made of 0.5 mm thick sheet metal.
  • the heating plates of the usual panel radiators are made of 1.25 mm thick sheet metal.
  • such a panel radiator has two heating plates and two convective surfaces, with a length of 960 mm, a height of 600 mm, a total heating surface 4.169 m2, a total weight of 33.96 kg and a heat output of 1833 watts at room temperatures of 24 ° C.
  • DE 27 30 541 A is a radiator for heating systems or the like with a vertically erectable hollow body has become known, which is hermetically sealed and partially filled with a negative pressure, serving as a heat carrier fluid and in the region of its lower edge has a profile which is the inclusion of a conduit for a Heat transfer within the plant serving additional liquid and allows a heat exchange causing contact with this conduit.
  • the DE 196 53 440 A is a heater for heating systems with a flow and a return, with at least one radiator having at least one cavity, known, wherein between the flow and the return line runs a heating line through which a heating fluid can flow and in the cavity, a heat conduction fluid is included.
  • the heating cable is designed as a tube.
  • the heating cable is designed as profiling on the components of the radiator inside.
  • the radiator or its cavity is constructed by at least two in particular halves components which have the profiling, which form the heating or heating cables by joining the components together.
  • the profiling extends as a sheet or wire arrangement or the like between the flow and the return.
  • the invention has for its object to reduce the consumption of material in the production of panel radiators.
  • the chemically treated water is used with the addition of various inhibitors, whereby the mixed liquid is chemically resistant to corrosion.
  • the operating pressure of the heating system is limited only to the heating element and the pressure in the rest of the radiator remains atmospheric. This has the advantage that the heating plate made of thin sheet metal (0.5-0.6 mm) can be made, whereby the price level of the plate radiator is significantly reduced.
  • the heating element is a very efficient heat exchanger which can be made in two ways: Firstly, a sheet metal piece is made, with the dimensions 85mm wide, 1.5 - 2mm thick and a length that is about 100 mm shorter than the radiator ,
  • the channels are impressed, the depth of which depends on the heat output.
  • Two channels are connected to each other by means of the embossed sheets at the end of the heating element.
  • the embossed sheets have the same depth as the impressions along the heating element.
  • the return flow in the heating element is also composed of two partial streams.
  • the uniform distribution of current over the entire width of the heating element ensures that the heat transfer from the heating element to the circulating liquid becomes more efficient.
  • the heating element consists of two completely identical shells, which are connected to each other by spot welding (spot welding takes place between the channels).
  • the two shells are waterproof connected to each other by the weld.
  • the surface of the heating element is ribbed with wart-shaped needle ribs.
  • the needle ribs can be attached to the surface of the heating element by spot welding by means of an electrowelding device or automatically, with a tool specially made for this purpose.
  • By tapping the outer surface of the heating element very high external heat transfer coefficients are achieved, order of magnitude of 2000 W / m2K.
  • the heating element is installed in the designated foot channel of the heating plate.
  • the required circulation of the filling liquid is caused by the gravity movement in the heating plate.
  • the gravity movement is caused by the density difference of the filling liquid in the rising and the falling column.
  • the ascending and descending columns represent the impressed channels in the heating plate.
  • the heating element is mounted only under the rising columns, that is, only the zone of ascending movement is heated.
  • the zone under the sloping columns will not be heated. This results in the requirement that the total length of the heating element is shorter than the heating plate. This difference in length is about 100mm. It can be concluded that the "sloping zone" in the heating plate is very short, as short as it is necessary to generate the gravity movement.
  • a hot plate is done in such a way that the trays are made in the classical manner, but with the difference that at the bottom of the shell, a channel is provided, in which the heating element is installed.
  • Two shells are first fixed together by spot welding and then the edges of the heating plate are then sealed watertight by seam welding.
  • the bowls are during the preparation of the Outlet openings provided through which the supply and return pipes are passed and welded watertight to the shell.
  • a panel radiator can be composed of one, two or three hot plates.
  • each hotplate four openings are provided with the diameter of 15 mm, at the bottom of a discharge opening and at the top of a filling and ventilation opening.
  • the outer shells of the heating plate are made of 0.6 mm thick sheet metal, since the pressure in the heating element is identical to the pressure of the heating system.
  • the convective surfaces are made of 0.5 mm thick sheet metal.
  • the heating plates of the usual panel radiators are made of 1.25 mm thick sheet metal.
  • the total weight is composed as follows: - 2.304 m 2 (2 hotplates), 0.6 mm thick 10.78 kg - 2 pieces of convective surfaces 0.5 mm thick 6.98 kg - 2 heating elements 3.00 kg - Cover profiles, retaining tabs, connections 2.08 kg - All in all: 22.84 kg
  • the heating plates are filled with chemically treated water, which significantly reduces the susceptibility to corrosion. You can also use the hot plates fill with other heat transfer fluids, which completely exclude corrosion, but this raises the cost issue.
  • the panel radiator is designed in such a way that at the foot of the two shells 1, a horizontal square channel is provided, in which an efficient heating element 2 is installed, which indirectly transfers the heat from the heating circuit to the filling liquid in the heating plate.
  • the vertically embossed channels 3 in the heating plate are ascending, and the channels 4 descending.
  • the filling liquid in the heating plate circulates through gravity, which is set by the density difference in the rising and falling channel in steady state operation.
  • FIG. 1A In the Fig. 1A . Fig. 1B and Fig. 1C is clearly the positioning of the heating element 2 indicated. From the Fig. 1C the positioning of the forward and return port 5 and 6 can be seen.
  • Fig. 2 the heating element 2 is shown, wherein it can be seen that the heating element is made of two sheet metal plates in such a way that four channels 7 are stamped lengthwise in the metal plate and that two plates are sealed together by seam welding waterproof.
  • the indentations of the two plates form a channel with a circular cross-section, through which the heating water flows from the heating system.
  • Two channels are connected to each other by means of the embossed sheets 8.
  • the two channels at the foot of the heating element are connected by means of a pipe section 5 to the heating flow and the other two channels by means of the pipe section 6 to the heating return.
  • Fig. 2B and Fig. 2C the plan view and side view of the heating element is shown enlarged.
  • the surface of the heating element is provided with needle ribs 16 which serve to increase the heat transfer coefficients on the side of gravity flow.
  • connection of the individual heating plates 1 is shown as a finished radiator.
  • the connection of the heating plates by means of the pipe segments 5, 6, 9, 10 and 11.
  • the pipe segments 5 and 6 are welded together watertight by means of a T-piece 13.
  • the tees 13 are provided with threaded connection and serve as Bankungsvor- and return port, the pipe segments 9, 10 and 11 are also welded together by means of a tee 12.
  • the T-pieces 12 are provided with screw plugs that serve to fill, vent and drain the radiator.
  • a frame Fig. 3D - 14, made of L-profile with the dimension 17x20x 0.8 mm, which is attached to the front of the heating plate, so that no Aufsteckgitter or side Aufsteckdeckel more, as with conventional radiators are required.
  • the spacing of the heating plates is 56 mm, which is perfect for a good convective air flow.
  • a convective surface 15 is attached, which is made of sheet 0.5 mm thick, made. The task of the convective surface is to settle the radiation loss.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Domestic Hot-Water Supply Systems And Details Of Heating Systems (AREA)
  • Central Heating Systems (AREA)
  • Steam Or Hot-Water Central Heating Systems (AREA)

Claims (13)

  1. Échangeur de chaleur à plaques consistant en une ou plusieurs plaques chauffantes (1) qui sont remplies d'eau traitée chimiquement ou d'un autre liquide caloporteur, le liquide de remplissage, un élément de chauffe (2) étant installé dans la plaque chauffante (1), lequel sert à la transmission de la chaleur de l'eau de chauffage au liquide de remplissage dans la plaque chauffante (1), l'eau de chauffage s'écoulant à travers l'élement de chauffe (2) comme échangeur thermique et transmettant sa chaleur au liquide de remplissage, et l'élément de chauffe (2) étant installé dans un canal de pied de la plaque chauffante (1), caractérisé en ce que
    l'élément de chauffe (2) de la plaque chauffante (1) se compose de deux plaques dans lesquelles des canaux de forme arrondie (7) sont empreints, lesquels se superposent et conforment ce faisant une section transversale de forme circulaire à travers laquelle s'écoule l'eau de chauffage, les plaques étant jointes entre elles par soudage par points et leurs bords extérieurs étant scellés de façon étanche par soudage continu sur leur pourtour.
  2. Échangeur de chaleur à plaques selon la revendication 1, caractérisé en ce que, à l'extrémité de l'élément de chauffe (2), les canaux empreints (7) sont reliés entre eux par des arcs empreints (8), à profondeur égale.
  3. Échangeur de chaleur à plaques selon l'une des revendications 1 ou 2, caractérisé en ce que
    les canaux empreints (7) sont raccordés par deux morceaux de tuyaux (5, 6) à l'aller du chauffage et au retour au moyen d'une pièce en T (13).
  4. Échangeur de chaleur à plaques selon l'une des revendications précédentes 1à 3,
    caractérisé en ce que les canaux empreints (7) sont disposés dans la plaque chauffante de sorte que l'eau arrivant de l'aller du chauffage (5) se répartit sur deux ou plusieurs flux partiels, de sorte que, de cette manière, les résistances à l'écoulement et le transfert de chaleur s'instaurent de façon optimale.
  5. Échangeur de chaleur à plaques selon l'une des revendications précédentes 1 à 4,
    caractérisé en ce que la surface de l'élément de chauffe (2) est pourvue de nervures en aiguilles (16) ou d'un nervurage d'un autre genre.
  6. Échangeur de chaleur à plaques selon l'une des revendications précédentes 1 à 5,
    caractérisé en ce que le canal de pied au pied de la plaque chauffante (1) présente une section transversale carrée dans laquelle est installé l'élément de chauffe (2).
  7. Échangeur de chaleur à plaques selon l'une des revendications précédentes 1 à 6,
    caractérisé en ce que l'échangeur de chaleur présente dans la plaque chauffante (1) des colonnes empreintes à la verticale, lesquelles sont en partie des canaux ascendants (3) et en partie des canaux descendants (4).
  8. Échangeur de chaleur à plaques selon la revendication 7, caractérisé en ce que
    l'élément de chauffe(2) n'est placé que sous les colonnes ascendantes (3) et la longueur totale de l'élément de chauffe (2) est plus courte que la plaque chauffante (1), de sorte que seule la zone du mouvement ascendant du liquide de remplissage est chauffée.
  9. Échangeur de chaleur à plaques selon l'une des revendications 1 à 8,
    caractérisé en ce que les plaques chauffantes (1) sont reliées entre elles par des segments de tuyaux (9, 10, 11), lesquels sont reliés entre eux par des pièces en T (12) qui servent au remplissage, à la purge et à la vidange de l'échangeur de chaleur.
  10. Échangeur de chaleur à plaques selon l'une des revendications 1 à 9,
    caractérisé en ce que les plaques chauffantes (1) sont fabriquées en tôle d'acier ou en un autre matériau d'une épaisseur de 0,5 à 0,6 ou 0,8 mm et sont conçues pour une pression de travail de l'installation de chauffage de 20 bar et plus.
  11. Échangeur de chaleur à plaques selon l'une des revendications 1 à 10,
    caractérisé en ce que celui-ci peut être chauffé à la vapeur d'eau et peut servir d'échangeur thermique à haute pression.
  12. Échangeur de chaleur à plaques selon l'une des revendications 1 à 11,
    caractérisé en ce que celui-ci peut servir d'échangeur thermique avec motifs décoratifs, des motifs variés pouvant être imprimés sur sa face frontale.
  13. Échangeur de chaleur à plaques selon l'une des revendications 11 ou 12,
    caractérisé en ce que la face frontale d'une plaque chauffante est fabriquée dans une tôle lisse de 0,8 à 1 mm d'épaisseur.
EP04005542A 2004-03-09 2004-03-09 Echangeur de chaleur à plaques avec chauffage indirect Expired - Lifetime EP1574799B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AT04005542T ATE393905T1 (de) 2004-03-09 2004-03-09 Plattenheizkörper mit indirekter beheizung
DE502004006995T DE502004006995D1 (de) 2004-03-09 2004-03-09 Plattenheizkörper mit indirekter Beheizung
EP04005542A EP1574799B1 (fr) 2004-03-09 2004-03-09 Echangeur de chaleur à plaques avec chauffage indirect

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP04005542A EP1574799B1 (fr) 2004-03-09 2004-03-09 Echangeur de chaleur à plaques avec chauffage indirect

Publications (2)

Publication Number Publication Date
EP1574799A1 EP1574799A1 (fr) 2005-09-14
EP1574799B1 true EP1574799B1 (fr) 2008-04-30

Family

ID=34814275

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04005542A Expired - Lifetime EP1574799B1 (fr) 2004-03-09 2004-03-09 Echangeur de chaleur à plaques avec chauffage indirect

Country Status (3)

Country Link
EP (1) EP1574799B1 (fr)
AT (1) ATE393905T1 (fr)
DE (1) DE502004006995D1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL2007760C2 (nl) * 2011-11-09 2013-05-13 I P Consultancy Werkwijze voor het vervaardigen van verwarmingsradiatoren, en bijbehorend(e) appendagesysteem en verwarmingsradiator.
GB2499975A (en) * 2012-01-12 2013-09-11 ECONOTHERM UK Ltd Heat transfer unit and a heat exchanger

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1125166B (it) * 1976-07-06 1986-05-14 Zanussi A Spa Industrie Radiatore per impianti di riscaldamento o simili
DE3144089C1 (de) * 1981-11-06 1983-04-21 Daimler-Benz Ag, 7000 Stuttgart Flaechenheizkoerper,insbesondere fuer Fahrzeuge
GB2313185B (en) * 1996-05-15 1999-11-10 British Gas Plc Radiators
DE19653440A1 (de) * 1996-12-20 1998-06-25 Kermi Gmbh Heizvorrichtung, bevorzugt aus Kunststoff
EP1352198A1 (fr) * 2000-12-19 2003-10-15 Lambco Holdings Ltd Appareil de chauffage ameliore

Also Published As

Publication number Publication date
ATE393905T1 (de) 2008-05-15
DE502004006995D1 (de) 2008-06-12
EP1574799A1 (fr) 2005-09-14

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