CZ407297A3 - Heating equipment, particularly a heating element for central heating system and process for producing thereof - Google Patents

Abstract

A heating device, in particular a radiator (10, 100, 200) for central heating installations, and a process for manufacturing such heating devices are disclosed. The heating device has a heating medium supply (18, 118, 218), a heating medium outlet (20, 120, 220), a pipe (14, 114, 214) between the supply and the outlet and a heat radiating surface (12, 112, 212). The pipe (14, 114, 214) is preferably designed as a tubular element and is thermoconductively joined over a large surface to the heat radiating surface (12, 112, 212).

Description

A heating device, in particular a heating element for central heating, and a process for its manufacture

Technology ........

The invention relates to a heating device, in particular a heating element for central heating, with a heating medium inlet, a heating medium outlet and a conduit formed between the inlet and outlet and with a radiating surface for radiating heat of the heating medium and a method for producing said heating device.

Existing ......... state of the art

Various types of heating elements are known in the art. A typical representative of currently used heating devices are, for example, plate-shaped heating elements. For the production of plate-shaped heating elements, two halves of the cross-section are currently pressed from two sheets to receive and transport the heating medium, usually water. The two sheet halves are welded together to form a conduit for the thermal medium.

Later, the heating devices produced in this way are provided with a covering which must be glued or otherwise fixed.

Such heating devices, for example as described in DE 38 38 513.9 A1, have the disadvantage, inter alia, that the manufacture is relatively expensive, since it requires a large amount of energy for pressing the sheets and subsequently for welding them together with one another. A very large proportion of these heaters are leaking and need to be repaired or even discarded. It is also required to check the weld seam in the water tank as a proper additional work step, which greatly increases production costs. In addition, it is possible to improve the compressive strength of these existing plate bodies.

In addition, sheets must be used for existing panel heaters. that are thicker than is actually necessary. This is caused by locally extending the wall of the sheet by fitting and thereby thinning. In order to ensure a minimum wall thickness, it is therefore in principle necessary to work with an oversized sheet thickness.

Last but not least, the panel heaters work also have to mention that the known predominantly by means of convection heat transfer, i.e. heat is transferred to the building room by moving dry warm air, suitable radiant to the health of the occupants of the room, heating. is not preferred

In contrast, the room at the current low temperatures of the room is passed by, for example, heating elements, which can be

Another known radiant heat.

It consists of individual labor costs only, as well as energy costs, and with higher convection heat.

Heating elements are also known which are designed as so-called floor heating strips. Such heating strips are usually located in buildings immediately in the floor area. Also, this type of heater operates essentially with convective heat and to a small extent with direct and indirect radiant heat. Direct radiant heat is taken from the low-axis, room-facing planar regions of the floor heating strips, and a greater part of the radiant heat is generated by increasing the heat flow to heat the wall areas above the floor heating stripe, thereby rendering the walls a heat emitter and indirectly floor strips. The efficiency of such floor heating strips is limited when the dimensions of the floor heating strips cannot be increased, as this is not possible for aesthetic reasons. In addition, the resulting air flow, which touches the walls of the room, causes the walls to become stained with dirt particles from the resulting thermal flow after a short time.

SUMMARY OF THE INVENTION

SUMMARY OF THE INVENTION It is an object of the invention to provide a heating device and a method for producing a heating device.

which, as far as possible, eliminate the disadvantages of the prior art, in particular which can be produced easily and without problems.

Said object of the invention is solved by a heating device having the features set forth in claim 1. This heating device can be produced according to the invention in the manner described in claim 19.

Advantageous embodiments of the heating device according to the invention, respectively the process variants, are defined in the dependent claims.

The advantages achieved by the heating device according to the invention, in particular by the heating element for central heating, are that the conduit is in the form of a pipe which is thermally conductively connected to the radiating surfaces over a large area. The use of pipes saves all work steps for the production of heating medium lines.

The conduit only requires a thermally conductive connection to the radiating surfaces, for example in the form of sheet metal, so that heat is radiated from the radiating surface mainly in the form of radiant heat. The proportion of the convection area is therefore relatively small.

Preferably, an oval or elliptically shaped tubular conduit is used to allow the possible contact areas between the tube or the conduit and the radiating surface to be increased. In this case, one of the two long sides of the oval or elliptically formed tube is in contact with the radiating surface. As a result, the heat transfer between the conduit and the radiating surface is greatly increased, so that the proportion of heat transferred to the radiation of the tube can be increased.

radiant

Preferably, this means which deforms.

For example, in order to increase the contact area, they use conventional circular tubes

In order to allow the connection of the pipe with the largest possible copper or radiant conduit, the pipe conduit can be connected to the radiant conduit.

With soldered bridges or soft soldering.

particularly good thermal brazing can be realized.

Another possibility to increase the heat of the contact surfaces is that the radiating surfaces are provided with suitable profiling,

In a preferred sizing design, for example by serration.

in proportion to the formation of the conduit.

for example, with respect to the pipe diameter of the pipe, two or three contact lines or surfaces are obtained between the pipe and the profile of the radiating surfaces. Preferably, the profile is formed with α 1 and the heat transfer between the conduits can be at least partially flat. Also suitable gluing, soldering, possibly welding or the like.

so that the surfaces touch the guide for improvement

If the cross-section of the deformed pipe or pipe duct is dimensioned, it is above the level of the existing thermal medium.

most often water.

air. The air bubble cannot then settle because it moves with the bubbles and the conduit wall. Such a heater in principle device.

It is also on salvage areas

This procedure requires the heater to be separated from the conduit with water between the air and air bubbles traveling not requiring a venting advantageously possible by means of thermally aligning the conduit of a well conductive adhesive.

less energy to produce the heater.

wherein the thermal bonding by means of a thermally conductive adhesive is generally not as good as by means of soldered bridges.

A particularly advantageous use of the heat of the heat transfer medium which is supplied to the heating device according to the invention can be achieved by this. The tubular guide is formed on a larger section, the guide length being 5 to 6 m or up to 10 m or more. In this case, the conduit is installed on the radiating surface such that the radiating surface

Nevertheless, the guide is not straightforward but can still have small dimensions.

but double the spiral.

In this case, the bending radii for tubular ineander or the like.

the conduit is selected such that the cross-section of the conduit does not change so that it wraps the conduit and thus creates an increased flow resistance. in the case of the case

In addition, it may be desirable that the tubular tube does not deform by pressing in the guide region, oval, cross-section, by movement when the circular cross-section is transformed into or a comparatively shaped cross section.

In order to achieve a high heating invention, the pipe power of the heating conduit and / or radiant radiance according to the surface can be provided with radiant and / or preferably convection elements.

These radiations according to the invention.

positioned on the back of the heater in order not to impair the aesthetic expression of the heater according to the invention.

In order to enable the heating element according to the invention to be fastened, a mounting means is provided on the radiating surface and on the guide against the radiating surface, which is connected by at least one, preferably four connecting elements to the radiating surface and / or the conduit.

In order to prevent the wall of the room downstream of the heating device according to the invention from being heated unnecessarily, an insulating means can be placed between the radiating surface and the pipe conduit which thermally separates the heating device from the building wall. In this case, the insulating means can be set up simultaneously by means of the mounting means or can be mounted on the building wall separately.

Suitable insulating means are, for example, double-sided mirror boards, foamed plastic or rigid plastic foam or a fiber board, for example provided with aluminum foil.

Advantageously, a cavity can be formed between the radiating surface with the conduit and the insulating means, through which air can rise, which is heated during passage through the cavity and thus additionally increases the heating capacity. In this case, the heat received by the insulating means, or possibly reflected from it, can subsequently be used to heat the room.

Preferably, the cavity is formed above the at least one convection body, which conducts air rising into the cavity in the direction of the back of the radiating surface with the tubular duct disposed thereon, since it is generally warmer than the surface of the insulating means. As a result, the temperature difference between the active thermal device and the passive insulating means can be reacted when the optimum amount of air is heated to the maximum temperature.

To improve the air supply to said cavity between radiant flat with tubing and insulating means.

the radiating surface may have at least one air passage, especially when the radiating surface reaches the floor of the room for aesthetic reasons, so that no air can penetrate the radiating surface.

In order to increase the heating power of the heating device, an additional heating device can be placed downstream of the radiating surface and the conduit, which is mechanically and flow-connected to the heating device, its radiating surface being dimensioned for convective heat output. Above the other heating device, the above-mentioned insulating means can be used. It may be preferred to one another

Therefore, the additional ribbed or corrugated may be, for example, located adjacent the front or rear branches of both adjacent heating devices may be connected to each other, for example by a solder joint.

For aesthetic reasons, the radiating surface may have an opening that is accessible to a valve, thermostatic valve or similar control, or through which the corresponding heating fitting protrudes.

For aesthetic reasons, the radiating surface is planar, so it is especially seam-free.

into the wall face and visually looks like part of the wall.

The heating device, in particular according to the invention described above, can be produced according to the invention in a manner in which the cast surface is preferably formed from at least a one-sided planar sheet. On this radiant surface, the heat transferable medium is um.

and a tubular tube on one side of it lays a conduit for, in particular, a tube. The radiating surface can be connected to each other by the conducting medium flowing through the conduit, transferring heat through the tube wall to the radiating surface.

Compared to the prior art, a large number of operating steps can be minimized in order to create a conduit for the heating medium simply by means of a conduit, for example by means of copper pipes.

A particular advantage can also be achieved by deforming the tubular guide before it joins the radiating surface. In this case, the guide can be laid on the radiating surface before the deformation and deforms after laying on the radiating surface.

The conduit can be connected to the radiating surface by soldering or gluing. In terms of soldering, brazing as well as soft soldering as well as copper soldering are possible.

The radiation surface and the conduit can also be connected to each other by a hot melt adhesive.

It is essential that the individual parts can be connected to each other as safely and cost-effectively as possible without appreciable deformation of the radiating surface. The source of energy for this bonding process is not essential, the relevant bonding method is decisive. Because it can also be used for welding.

A possible welding method consists of a surface, and the lines are covered with plastic by radiating and bonding to each other by ultrasound, i.e. welding does not show a noticeable coating.

Consider in m by ultrasound. Other coupling processes, such as laser-inductive, also occur.

Welding energy or since microwave bonding can be used without coating.

It is clearly evident.

The embodiment of the heater according to the previously described features of the preferred features in the mutual invention brings performance, a combination of an additional heater previously simple and unproblematic.

where production remains as

Overview of pictures ....... on ........ drawings

giant . 1 a first vyn á 1 design of the heating e z u in front view of the body created from behind. p o d 1 e giant . 1 b first design heating bodies created according to

In the following, the heater formed according to the invention is illustrated by way of example embodiments with reference to the accompanying drawings, further advantages and features of the present invention being shown. The drawings show:

of the invention in section.

FIGS. 2a, 2b show an embodiment of a heater formed in accordance with the invention.

1, wherein the tubular guide has a different shape.

3a, 3b show a further embodiment of the heater according to the present invention with another type of pipe conduit in a view corresponding to FIGS. 1 and 4, in a sectional view of the connecting area between the pipe conduit and the radiating surface.

P..ř ".í" .k ".l. adv ....... execution ......... lno climb

In the figures, the same or at least functionally identical parts are indicated by the same reference numerals, the reference numerals assigned to successive figures are increased by one hundred.

Heater design

10, shown in FIG. 1, has a radiant flow 1.2, for example in the form of a planar flow and a pipe conduit 14, for the heat transfer medium. The pipe conduit 1,4, for example a copper pipe, has been bent in a closed strip in which it forms narrow threads.

Conduit .1.4. In this case, the bending points 16 are preferably bent in no bending problems.

radius, which

The conduit 1.4 is terminated with an inlet 1.8 and an outlet 2.0 via which a heat transfer medium is supplied to or removed from the central heating system into the heating element 10, respectively. Copper pipes are particularly suitable because they can be easily attached by brazing or soft soldering to a radiating surface 12, generally of sheet metal, with excellent heat transfer. In addition, it is also possible to attach particularly well to the inlet 1.8 and the outlet 20 of the connection fitting, for example also by soldering or by screwing.

·· · · · · ·

1b is a cross-sectional view of a tubular conduit 14 of circular cross-section located on a radiating surface 12. Of course, the conduit 14 may be formed with an oval or elliptical or flattened cross-section through which a larger contact surface may be formed between the conduit. 14 and radiant surface 12. This improves the heat transfer of the heat transfer medium through the walls of the conduit 14 to the hall 12 of the surface 12.

In addition to brazing, a heat-conducting adhesive, for example a metal powder, in particular a copper powder, filled with a synthetic resin in the form of a one-component or multi-component resin can also be used for thermally and mechanically connecting the conduit 14 to the radiation surface 12.

In terms of soldering, brazing is possible. as well as soft soldering and also copper soldering.

The radiation surface 1.2 and the conduit 14 can also be connected to each other by means of a hot-melt adhesive.

It is essential that the individual parts can be connected to each other as safely and cost-effectively as possible without noticeable deformation of the radiating surface 12. The energy source is not essential for this joining process, the respective joining method being decisive. Accordingly, welding can also be used.

A possible welding method is to cover the radiating surface 12 and the tubular duct 14 with plastic and to connect each other by ultrasound, i.e. ultrasonic welding.

There is no noticeable coating.

Other bonding processes, such as inductive welding, microwave energy bonding or laser bonding, are also contemplated, since these bonding processes can be used without coating.

management 14.

the soldering connection in cross-section of a circular or radiating surface 12 is also applicable to other known methods, also the processes do not generally improve substantially higher their ends of the arm 24a, while being fixed to the The tube may be inserted in a refractory, coated in a brazing furnace. Of course soldering procedures. Welding heat connection and require production costs. The radiating surface 12 may be bent, in particular in the right-hand direction

24b to prevent the room wall from forming behind the heater 10 dust and dirt can fall.

The legs <4a, 24b may be of different lengths depending on the depth of the heater 10 and may additionally be provided with grooves or the like to allow air to circulate beyond the radiating surface 12.

Insulation means 28 may be disposed on the back of the radiating surface 12 and the conduit, which thermally separates the heater from the building wall. A cavity 30 may be formed between the radiating surface 1.2 with the conduit 1.4 and the insulating means 2.8 to allow air circulation.

The radiating surface 12 may be provided with at least one air passage 3.4 for convective air movement.

vedení m

Behind the heater 10 with a radiating surface 1.2 and a tubular

1.4 may be placed next.

a heating device (not shown) which can be mechanically and flow-connected to the heating element 10, the radiating surface of the other heating element being preferably designed for convection heating to increase.

heating power equipment

The embodiment of another heating element 100 according to the invention and shown in FIG. 2 is designed essentially as a heating element 10. However, in comparison with FIG. conduction 114.

• ·····················································

By changing the shape of the pipe it is possible to change its length, while another radiating surface ..1 .... 1 ... 2. remains unchanged. This makes it possible at

unchanged external dimensions heating bodies 10 ,. 100. 200 vyr obit heating you 1 e Sat 10 100, 2 0 0 sec. From 1 i heating capacity. So the heater 1 0 according to Fig. 1 has bigger heating power than others heating element 100 according to Fig. 2 , because Pipe guide 14 1 is de1 ? . less than d 1 s i tubular The conduit 114 of FIG.

The additional tubular duct 114 or the additional radiating surface 112 may be provided with an additional radiant and / or convection body, if necessary to increase the radiant or convective effect.

See also Figure 3.

A further pipe conduit 1.1.4 may be formed to improve heat transfer and facilitate the attachment of the other pipe conduit 1.1.4. and stabilizing it with an oval or elliptical tube that is in heat-conductive contact with another radiating surface 1 ... 1 ... 2, preferably with an at least partially planar surface. The further pipe conduit ... 1 ... 1..4 may also be formed by a deformed pipe. 1 ... 1.4, 1 .1.4 '' '.

Another example of a different conduit 214 is shown in FIG. 3. The other conduit 2.1..4 of FIG. 3 is formed in three loops, while the conduit 1 ... 4 of FIG. 1 is formed in four loops, so that according to FIG. 3, there is less heat transfer from the heat transfer medium to another radiating surface 212. The heating power of another heater .2.0.0 is less than the heating power of heater 1.0. 1 and greater than the heating power of another heater 100 of FIG. 2.

Other radiant area 21.2. it may have an opening .2..3..6. through which a valve, a thermostatic valve or an accessory is accessible for operation.

FIG. 4 illustrates a preferred possibility of connecting another pipe conduit 214 to another radiant surface 212. In this case, another pipe conduit 214 may be inserted to form as large a radiant surface as possible. to the profile in the form of notches 2.13.

It is understood that features described only in relation to individual figures may also be combined with embodiments that do not include those features in the figures.

Claims (20)

PATENT CLAIMS 1 .. Heating equipment. name of the heater for water (18, 1 18, 218) for the heating medium central t o pens discharge (20, 120, 220) for heating between inlet (medium 18. 118 radiant surface (12, and line m (14, 114, 214) 2 18) 112, discharge (20, 120, 220) and se 212) for radiating heat to a thermal medium, characterized in that: a) the guide (14, 114, 214) is configured as a tubular element. b) the tubular element is large-area. thermally conductively connected to the radiating surface (12, Heating device according to the conduit (14, claim 1) (14) characterized in that the oval or elliptical tube, which has a partially planar surface, is preferably heat-conducting by at least its contact with the radiating surface (12, 112, 212). Heating device according to one of claims 1 or 2, characterized in that the pipe conduit (14, 114, 214) is formed by a deformed pipe (114 '', 114 ''), preferably with a circular cross-section. Heating device according to one of Claims 1 to 9, characterized in that the pipe conduit (14, 114, 2 14) is connected to the radiating surface (12, 112. using a large surface. with the help of large-area soft soldering. Heating device according to one of the claims 1 to 4, characterized in that the pipe guide 214) is connected to the radiating surface (12, by means of an adhesive, preferably a good thermal conductivity). • · · · Heating device according to one of Claims 1 to 5, characterized in that the tubular duct (14, 114, 214) is mounted and / or fixed in the profile of the radiating surface (12, 112, 212), preferably in a notched section . Heating device according to one of Claims 1 to 6, characterized in that the tubular duct (14, 114, 214) is formed over a large section and is disposed by one surface on the radiating surface (12, 112, 212). Heating device according to one of Claims 1 to 7, characterized in that the tubular duct (14, 114, 214) is double-helical or meandering. Heating device according to one of Claims 1 to 8, characterized in that the pipe conduit (14, 114, 214) is formed endlessly. Heating element according to one of Claims 1 to 9, characterized in that the tubular duct (14, 114, 214) and / or the radiating surface (12, 112, 212) has an additional radiant and / or convection element (142, 232). ). Heating element according to one of Claims 1 to 10, characterized in that the radiating surface (12, 112, 212) and the pipe conduit (14), 114, 2, 14) are positioned opposite the mounting means (226), which is connected to the radiating surface (11, 112, 212) and / or the pipe (14, 114, 214) by means of at least one, preferably four connecting elements. . Heating element according to one of Claims 1 to 11, characterized in that the radiating surface (12, 112, 212) and the conduit (14), 114, 214) are provided with an insulating means (28) for thermally separating the heater (10, 100, 200) from the building wall. • · • · Heating device according to claim 12, characterized in that between the radiating surface (12, 112, 212) with pipe guide (14, 114, 214) and a cavity (30) is formed by the insulating means (28). Heating device according to claim 13, characterized in that at least one convection body (232) is arranged in the cavity (30) for guiding air rising in the cavity (30) in the direction of the rear side of the radiating surface (12, 112), 14, 114, 214). Heating device according to one of Claims 1 to 14, characterized in that the radiating surface (12, 112, 212) has at least one air passage (34). Heating device according to one of Claims 1 to 15, characterized in that the radiating surface (12, 112, 212) has an opening (236) for actuating the valve or the thermostatic valve. 17. Heating equipment according to one of the claims 1 and ž 1 6, characterized by radiant flat (12,112, 2 12) Yippee rovinná. Heating device according to one of Claims 1 to 17, characterized in that it is behind the heating element 100, 200) with radiant surface (12 2 12) and a tubular conduit (14, 114, 214) is provided with another heating radiator, which is mechanically and circulating with the heating element (10, 100, 200), the radiating surface of the other heating device being designed preferably for convection. Method for manufacturing a heating device, in particular according to one of claims 1 to 18, with the following steps a) a radiating surface (12, 112, 212) is formed in the form of at least one side planar sheet, b) a guide (14, 114, 214), preferably formed of a tube, is placed on one side of the radiating surface (12, 112, 212), c) the radiating surface (12, 112, 212) and the conduit (14, 114, 214) are thermally conductive to each other. A method according to claim 19, characterized in. that the conduit (14, 114, 214) deforms before being connected to the radiating surface (12, 112, 212). Method according to one of claims 19 or 20, characterized in that the guide (14, 114, 214) and the radiating surface (12, 112, 212) are soldered, glued. at the bottom by welding. 22. The method of one of the claims 19 to 21, characterized by se t í m. that the leadership (14, 114, 214) before laying on radiant desktop (12, 112, 212) fire in one plane, eventual parallel to n í. Method according to claim 19, 20 or 22, characterized in that welding, ultrasonic welding or microwave welding or laser welding are used to connect the conduit (14, 114, 214) to the radiating surface (12, 112, 212). Method according to one of Claims 19 to 23, characterized in that at least the tubular duct (14, 114, 214) and preferably also the radiating surface (12, 112, 212) are overlaid on one side with a connecting material or a solder, in particular copper solder. or plastic. Method according to one of Claims 19 to 24, characterized in that the radiating surface (12, 112, 212) is provided, for example by pressing or rolling, with a profile in which the tubular guide (14, 114, 214) is arranged. ao oj GIANT. 76 FIG. ή a. FIG. 2b FIG. 2a 100 ALIGN!