IL48093A

IL48093A - Heating member

Info

Publication number: IL48093A
Application number: IL48093A
Authority: IL
Original assignee: Runtal Holding Co Sa
Priority date: 1974-09-20
Filing date: 1975-09-12
Publication date: 1977-12-30
Also published as: AT336221B; CH568539A5; DK143370B; ATA840474A; JPS5153752A; GB1517984A; IT1042144B; IL48093A0; ES441107A1; FR2285586B1; DE2540202A1; IE42086B1; DE2540202C2; BE833593A; SE7509557L; DK395775A; FR2285586A1; NL7511063A; DK143370C

Description

atom The invention relates to heating Heating arrangements are in which a plurality of parallel pipes are connected to header pipes for the flow and return of a heating fluid such as Such known arrangements always have their header pipes at the ends of the parallel pipes which all open into the two header for which reason the latter must larger in than the parallel There also exist heating arrangements with rearwardly disposed header pipes and with parallel flat pipes which lie against each The is for example round or because of the larger must either project towards both sides of the plane of the with a symmetrical or must project only towards one in the construction with the header pipe displaced so that the latter case the header pipe is flush with the parallel pipes at the front side of the heating The arrangement of the header the structures of which may adopt any of many known is subject to aesthetic considerations as well as to manufacturing in order to achieve attractive shaping together with economical the previously known heating arrangements with the thicker pipes at the two ends cannot be considered as satisfactory from either the aesthetic or the manufacturing cost point of only autogenous or COg welding has been considered for welding the parallel pipes into the header With pipes which lie closely adjacent to each it is difficult to make a neat and this operation can only be carried out by skilled According to one aspect of the invention a heating arrangement comprises parallel disposed heating pipes closed at their ends and connected at a distance from their ends with header pipes for the feed and return of a heating wherein the heating pipes are flat pipes into which are welded at a distance from each pipe end members projecting into the interior of the pipe and having radially disposed slots for passage of the water said members being provided with outwardly projecting portions which are welded into the header pipes Because the header pipes are spaced from the flat and because of the use of the members as connections between the header pipes and the flat it is possible for manufacture to be effected by means of the welding in which the components to be joined together are brought together under pressure between the electrodes of a welding which substantially simplifies the manufacturing operation and does not require skilled The header pipes are preferably each of circular because a round pipe has a greater strength than a flat pipe in withstanding the pressure of the boss welding machine of which one electrode in the form of a is pressed against the periphery of the header while the pressure of the other electrode is carried by the member which projects entirely through the interior of the flat so that the relatively weak flat pipe is not A further reason for the preferred choice of cylindrical header pipes is the possibility of dividing the heating arrangement into sectors for feed and if a plurality of heating arrangements are to be connected in series and for example the upper half of each heating member is for the feed and the lower half is used for the which division can be most advantageously carried out with cylindrical header Partition walls which can be fitted into the header pipes for the division can be most advantageously inserted in a cylindrical header pipe and also ensure absolute which was never reliably the case with known heating arrangements with header pipes of for which reason the arrangement of a plurality of heating arrangements in series was hitherto only possible within narrow due to the pressure losses caused by leaks with the effect that the last arrangements are If as is usual in many the consumption of hot water in litres is used as a basis for calculating heating the series arrangement of heating arrangements is the most desirable for the purpose of achieving a high temperature gradient with a small volume of circulated and its operational reliability is therefore very According to a second aspect of the invention there is provided a process for the manufacture of the heating arrangement 1 described above wherein the members are inserted in holes provided at one side of the flat pipes and are sealingly welded to the edges of these holes and the outwardly projecting ends of the members having a conical centering shape are fitted into suitable holes provided in the header pipes the members being fixedly connected with the header pipes by boss welding by means of electrodes of a welding machine said electrodes being pressed against the outer surfaces of the header pipe By way of embodiments of the invention will now he described in detail with reference to the accompanying in Figure 1 is a front view of a heating Figure 2 is a side view of a heating arrangement with flat pipes arranged on one side of the header Figure is a side view of a heating arrangement with flat pipes arranged on both sides of the header and Figure 4 a view on an enlarged scale of part of a header pipe with a flat pipe connected heating arrangement shown in Figure 1 comprises five flat heating pipes which are arranged parallel to each and two header pipes 2 spaced inwardly of the ends of the flat pipes and rearwardly of a common plane through the flat This arrangement has the aesthetic advantage that the header pipes are not or are hardly visible from the in contrast to most heating arrangements of similar type in which the header pipes form thickened portions projecting forwardly or towards the this being the case if the parallel heating pipes are welded into the header pipes which are disposed at the ends of the heating pipes and which are of larger than the heating In case of the heating arrangements shown in Figures 1 to connection between the flat pipes 1 and the header pipes 2 is made by an advantageous process which can be called a combination of welding and boss This production process can only be carried out on header pipes which are displaced inwardly from the ends of the heating First of a respective hole is made in each flat pipe 1 at a predetermined spacing from each of the two ends and then a member 3 is fitted into each such hole so that the member lies against the inside wall of the flat pipe opposite the The member 3 projects outwardly through the and a conical centering portion turned on the projecting end of the The member is welded into the flat pipe 1 by means of welding along a weld seam around its The conical centering portion 4 of the member then caused to pro ect into a hole 6 in the header pipe and the header pipe 2 and the member 3 then joined together by boss To do an electrode which is in the form of a is pressed against the header pipe and a flat electrode of the welding machine which is opposite the is pressed against the flat pipe 1 from the outside so that the member transmits the pressure to the header pipe 2 which has a greater strength than the fiat pipe Two member 3 welded into each flat pipe and the flat pipe is thereby connected to the two header pipes 2 for the feed and On a portion which is disposed within a flat pipe each intermediate member has radially extending slots 7 for the passage of water into the flat The header pipes 2 are of circular which most advantageously permits radial partition walls 8 which are reliably sealed to be pressed in from the end of the if the heating arrangement is to be divided into separate upper and lower halves for the series connection of a plurality of heating The partition walls 8 are inserted before members 3 are welded into Figures 2 and 3 show that the flat pipes1 can be arranged on one side of the header pipes or on opposite sides of the header pipes 2 in parallel the flat pipes 1 being connected to the header pipes 2 in each case by means of boss which permits rational and thus economical Figure 1 also shows that the flat pipes 1 are arranged parallel to each other and are spaced from each so in contrast to known heating arrangements with flat pipes which touch each the present heating arrangements provides a higher heating output which is achieved by virtue of the circulation of air between the flat pipes and by virtue of the free heating surfaces which are larger since the heating pipes do not lie against each The heating arrangements disclosed hereinabove can be manufactured simply and The welded connections are of high quality and can be effected by unskilled By virtue of the construction of the heating which are generally the header pipes are not readily visible from the insufficientOCRQuality

Claims

1. A heating arrangement with parallel disposed heating pipes closed at their ends and connected at a distance from their ends with header pipes for the feed and return of a heating fluid, wherein the heating pipes are flat pipes into which are welded, at a distance from each pipe end, sleeve-shaped members projecting into the interior of the pipe and having radially disposed slots for passage of the water, said sleeve-shaped members being provided with outwardly projecting portions which are wielded into the header pipes.

2. A heating arrangement according to Claim 1, wherein the sleeve-shaped members are provided at their outer ends ' with conical centering portions which penetrate through openings in the header pipes, the radial ring shaped surface of the sleeve-shaped member adjacent the centering cone bearing against a flattened portion of the circular cross-section of the header pipe.

3. A process for the manufacture of the heating arrangement according to Claims 1 and 2, wherein the sleeve-shaped members are inserted in holes provided at one side of the flat pipes and are sealingly welded to the edges of these holes, and the outwardly projecting ends of the sleeve-shaped members having a conical centering shape are fitted into suitable holes provided in the header pipes, the sleeve-shaped members being fixedly connected with the header pipes by boss welding by means of electrodes of a welding machine, said eletrodes being pressed against the outer surfaces of the header pipe and the flat pipe. 48093/2

4. A heating arrangement according to claim 1 substantially as herein described with reference to Figures 1, 2 and 4 of the accompanying drawing.

5. A heating arrangement according to claim 1 substantially as herein described with reference to Figures 1, 3 and 4 of the accompanying drawing.

6. A process for the manufacture of a heating arrangement according to claim 1 substantially as herein described with reference to the accompanying drawings. For the Applicants D PARTNERS