EA012541B1 - A radiator system for radiators, for heating plant - Google Patents

Abstract

A production system for radiators, for heating plants, the system being obtained by simple assembly of two radiator half-shells (1a, 1b) and two connecting and fastening elements (3 and 4), in which a final complete radiator is obtained using only mechanical systems and without any welding, two flanges (5, 7) also being included. The final radiator of the system is composed of a plurality of single radiator elements (1) made of two radiator half-shells (1a, 1b) and a length of cylindrical pipe (2) applied to a single radiator element (1), while the two connecting and fastening elements (3, 4) are constituted by a threaded sleeve for connecting and fixing the two half-shells (1a, 1b) constituting a radiator element (1) to one another by a screwing action. The radiator elements so composed and connected will be provided in the part that extends from the cylindrical tract (12) and departs therefrom following on with short recessed tracts (14 and 15), in the recessed track (15) with an elastic washer (4) which enables irreversible connection of a relative length of cylindrical pipe (2) to the radiator element (1).

Description

The invention relates to a special system for the manufacture of radiators for heating installations, in brief consisting in the assembly of special basic elements that can be easily obtained using known means and technological processes.

In the proposed system, a wide variety of choices of basic elements, including the dimensions of some elements, makes it possible to obtain the final product, which includes radiators of significantly different sizes and shapes. In addition, the simplicity and speed of the assembly operations of the various components of each individual radiator make it possible to manufacture only the required types of radiators and in proper quantities. This helps to avoid the useless and costly accumulation of finished products.

Background of the invention

The current level of technology describes devices known as radiators, which are commonly used in heating installations working on water or steam to ensure adequate heat in rooms. These devices are mainly formed by hollow elements, having various shapes and sizes and obtained using various materials and manufacturing processes; hot water and in some cases steam at low pressures are passed through these radiators; water or steam is produced in boilers.

German Patent Document No. 317423 describes a method for connecting several ceramic heating elements using threaded bushings inserted through openings in said elements. Threaded bushings are connected using ring-shaped connecting devices, which are fixed between adjacent heating elements.

Great Britain Patent Document No. 657692 describes a radiator for heating buildings, having one or more elements, each of which consists of two steel sheets in the form of flat plates, fastened with their edges and having two tubular connectors for passing the heating medium coming from the circulation system. The pipes for supplying and discharging fluid are each connected to the radiator by means of a tubular connector comprising an annular sleeve having a radially outgoing tubular nest at each end and an annular flange for accommodating an opening in the adjacent radiator element.

German patent no. 833400 describes a radiator consisting of several steel heating elements interconnected by a connecting rod and cylindrical connectors located between them, which are held in place by centering sleeves.

French patent no. 1457847 describes a radiator for heating buildings, which consists of several heating elements placed side by side, hydraulically interconnected and having skirt elements at the ends. Between the skirt elements of adjacent heating elements are metal fittings, forming heating surfaces that cover the gaps between these elements.

Technical and technological progress made it possible to develop various new production methods and compounds.

One of the most well-known solutions, which is still quite popular, is the molding of individual elements by casting from cast iron, with each element being composed of a number of tubular channels, i.e. tubular racks, which are located in the same plane, as well as parallel to each other. These elements at their ends are connected to corresponding hollow bodies, which create separate collectors. Each of these collectors is made with holes to allow for the interconnection of several elements by means of threaded lugs. Obviously, the elements must be made of different types, so that each type basically differs in the number and length of the tubular struts of which it is made, so that for each type of element heating devices can be created, i.e. radiators with heat transfer surfaces that are directly proportional to the number of elements assembled together. From this it follows that, especially in the first stage of production, it will be necessary to make holes in a large number of elements of different typologies and remove all of them for storage. After that, anticipating consumer demand, groups of elements must be collected, each of which has a specific number of elements (of different types) before they are stored again.

Obviously, predicting the number of radiators that need to be made, with this type of solution is always a very rough assumption and as a result, the manufacturer is forced to develop its products based on low-confidence assumptions and, of course, must always contain a large warehouse in order to have in a sufficient range of components and elements.

The operation of connecting the elements necessary for the formation of a whole radiator case is also quite laborious; moreover, a special tool is needed, following the technological process, which requires considerable attention and maintenance by several experienced specialists, not to mention a long working time. There is an obvious need to produce significant quantities of the original products for assembly, plus the need to keep sufficient

- 1 012541 quantity of already assembled products, which implies large efforts and very high capital investments, which are kept practically “frozen” in the warehouse, as well as additional costs in part of the storage space. We must add to these costs the cost of assembly operations of the elements in order to obtain various types of ready-made radiators, and then the total cost of production is very high.

The development of a special welding method along with the improvement of technological processes of pressure treatment and the modern improvement of the characteristics of the steel used in these processes made it possible to develop new production solutions in the field of the invention, the main and most famous of which are summarized below and commented on in order to emphasize limitations and difficulties. both in terms of manufacturing and use, and in terms of the various shortcomings inherent in each of them.

One of the known solutions is to create a rectangular plate from a sheet of suitable steel by simple cutting and a process of deep pressing. In a rectangular plate, a large number of longitudinal depressions are extruded, so that these depressions are located at one distance from each other, parallel to each other, and perpendicularly interconnected at their ends by other transverse depressions. By connecting two such plates by welding, in which the plates are positioned so that the corresponding longitudinal depressions are located opposite each other and are turned by a recess in the outer direction, a finished radiator is obtained. Obviously, this process involves the use of a press for each type of radiator and, therefore, a significant use of cash. In addition, welding operations are quite expensive, since they involve the use of special expensive equipment and apparatus, as well as further expensive manual milling operations to eliminate aesthetic defects resulting from welding operations. In addition, stock problems remain unresolved, moreover, they worsen.

The following well-known decision, widely accepted, is also to use a steel sheet, to cut it and to shape it by pressing the shape of rectangular plates adapted to create two half-shells having several parallel longitudinal hollows with right angles at their ends transverse depressions.

The two half-shells thus obtained are arranged in opposite positions so that the longitudinal depressions and transverse depressions form corresponding cavities equivalent to pipelines corresponding to tubular racks and collectors of the elements mentioned above in the introduction to this document.

This solution also reveals significant drawbacks; moreover, it contains all the drawbacks of other previously described implementations of the existing prior art. The next solution that is suitable for this review due to a certain similarity to the proposed solution is that it involves the use of cylindrical tube sections that are welded to the ends; at the same time hollow shells have a “collector” structure. These hollow shells (“individual headers”) are formed by two half-shells, which are made from a suitable steel sheet again by cutting and pressing operations and welded to each other.

Obviously, this solution, apart from containing almost all of the above disadvantages related to other solutions of the current level of technology, has a very long welding seam, which consequently is expensive and forms ugly surface irregularities, such as droplets of molten material and production waste, which are partially, i.e. in those parts that are visible, they are removed manually using special tools and operations, such as hammering, scraping, filing, milling, and which are partially intact due to their inaccessibility, possibly inside the element itself.

As a consequence, the main objective of the present invention is to eliminate the various disadvantages described above, and this goal is achieved thanks to a new tubular radiator manufacturing system that includes, for the implementation of the process of forming tubular type heating elements (radiators), simple and quick assembly operation of hollow interconnecting elements which connect threaded couplings to create collectors in a wide range of different sizes, to which are attached segments of cylindrical tr b of different lengths, the connection of tubular members with each other, as well as their attachment to pipe section is achieved without the use of welding.

Description of the invention

For a better understanding of the characteristics and advantages of the proposed system, a preferred but non-exclusive embodiment is described and stated as a non-limiting example with reference to the accompanying drawings, in which:

FIG. 1 shows a partially disassembled side view of the proposed radiator;

FIG. 2-6 depict the external front views of some structures of hollow elements used to form radiator headers;

- 2 01241 of FIG. 7 shows a section along line 1-1 in FIG. 6;

FIG. 8 shows the front view of the first half-shell forming the male part of the hollow element;

FIG. 9 is a side view of the first half-shell shown in FIG. eight;

FIG. 10 is an internal front view of the first half-shell shown in FIG. 8 and 9;

FIG. 11 shows a section along the line ΙΙ-ΙΙ in FIG. ten;

FIG. 12 depicts an external front view of a second half-shell, which is symmetrically complementary to the half-barrier shown in FIG. 8, and is a covering complement of a hollow element resulting from the connection with the first half-shell;

FIG. 13 shows the corresponding side view of the second half-shell shown in FIG. 12;

FIG. 14 shows an internal front view of the second half-shell shown in FIG. 12 and 13; FIG. 15 is a section along the line ΙΙΙ-ΙΙΙ in FIG. 14;

FIG. 16 is an external view of the threaded sleeve used to connect the first and second half-shells shown in the preceding FIGS. 8-15, as well as for connecting different amounts of hollow elements formed by connecting two half-shells;

FIG. 17 and 18 are side views of the clutch shown in FIG. sixteen;

FIG. 19 depicts a section along the line of the TUNA in FIG. 18;

FIG. 20 is a front view illustrating the shape of the elastic recessed “washer” used to fix the joining of the tube segments to the respective connecting sleeves extending from the hollow member of the type shown in FIG. 2-15;

FIG. 21 is a section along the line VG in FIG. 20;

FIG. 22 and 23 depict an enlarged view of a structural element illustrating the use of the elastic washer shown in FIG. 20 and 21, on the corresponding coupling of the corresponding hollow element and, accordingly, placing the washer in the position prior to attaching the pipe section to the corresponding coupling, as well as the final arrangement in which the pipe section is superimposed on the coupling;

FIG. 24 and 28 depict external views of the possible possible shape of the flanges used, which can be fixed on the ends of the corresponding group of hollow elements of the type shown in FIG. 2-15, and mutually connected to each other by means of the threaded coupling shown in the preceding FIGS. 16-19;

FIG. 25 and 29 are side views of the flanges illustrated in FIG. 24 and 28;

FIG. 26 and 30 depict sections made, respectively, along the line UT-UT in FIG. 24 and in the line UE-UE in FIG. 28;

FIG. 27 is a side view of the structure of the plug, which may be applied to the flange shown in FIG. 24, 26 and 28;

FIG. 31 shows an external side view of the construction of another plug, which is applicable to the flange shown in FIG. 25, 27 and 29;

FIG. 32 is a detailed illustration of a fully disassembled connection with threaded couplings of the type shown in FIG. 19, pairs of complementary half-shells, shown in FIG. 11 and 15, as well as some of the resulting hollow elements and overlaid with an irreversible connection of the pipe segment to the corresponding coupling extending from the hollow element.

Common parts in the above drawings are denoted by the same item numbers.

Based on the clarity of the description, first refer to FIG. 2-29 in order to describe in detail the arrangement of the individual elements, which, according to the present invention, provide the possibility of obtaining a radiator with a wide range of dimensions and characteristics only by simple installation using mechanical interconnection systems.

In short, there are initially four main elements:

a hollow element 1 formed by assembling two half-sides 1a and 1b;

a piece of 2 cylindrical pipe;

threaded coupling 3;

elastic washer 4.

Separate flanges or flanges with accessories can be added to the above elements, the dimensions and design of which vary according to different applications.

Below is described in detail the hollow element 1.

FIG. 2 to 5, several different possible variants of the external device of the hollow element 1 are shown, namely that shown in FIG. 2, in which two short parts extend from the hollow element 1 (2), forming hollow cylindrical elements 12 intended to be connected, as described below, to two segments of the cylindrical pipe 2, up to the element shown in FIG. 6, in which six short cylindrical elements 12 extend from the hollow element 1 (6), intended to be connected to the six sections of the cylindrical tube. Obviously, the number of hollow chi

- 3 012541 lindric elements 12 extending from a single hollow element 1 may even be larger than the maximum number illustrated here.

For reasons of clarity, the hollow element 1 is also indicated by an extension number in brackets, which indicates the number of hollow cylindrical elements extending from it; for example, an element with six cylindrical elements 12 extending from it is indicated as follows: 1 (6), while an element that contains two cylindrical elements 12 extending from it is indicated as follows: 1 (2).

In order to describe in detail the general arrangement of the hollow element 1, refer to the following group of drawings, namely FIG. 7-15, in which the hollow element 1 is shown in detail. For reasons of clarity and simplicity, as well as for description, the various parts of the covered semi-sheath 1a are shown in FIG. 7 and 8-11 not only with numbers, but also with an additional letter “a”, while the various parts of the female half-sheath are represented in FIG. 7 and 12-15, not only with numbers, but also with an additional letter “b”. Also, based on considerations of clarity and simplicity, the half-shells (1a, 1b) are described below and the corresponding hollow element 1 obtained from them, which forms only two hollow cylindrical elements extending from it, having the same construction and using the same installation and manufacturing method as elements with three, four, five, six, etc. hollow cylindrical elements extending from them.

FIG. 7, the hollow element 1 is formed essentially by an overlay formed by assembling two complementary half-shells 1a and 1b. The half barrels 1a, 1b are mirror and are hereinafter referred to as the covered half bar 1a and the covering half bar 1b. The half-covered span 1a and the spanning half-barrier 1b differ in that, as can be seen in FIG. 7, 11, and 15, the flat surfaces BA of the edges of the covered half-sheath 1a and all the surfaces BA have a small protruding rim M, while on the flat surfaces of the explosives covering the semi-shells 1b, protruding rims M can fit into the corresponding grooves P as described below, into the corresponding groove R. In addition, both half-shells 1a and 1b have a hollow round protruding part in the back.

Also, as seen in FIG. 10 and 11 for the male half-shell 1a and in FIG. 14 and 15 for the female half bar 1b, the male half bar 1a preferably has three protruding elements or pin 8a, which are aligned with the three Pb holes in the female half bar 1b. The pins 8a enter the holes of Pb similarly to the rim M on the male half barrier 1a, which enters groove P. Above and concentrically with respect to the outer arc of the male half barrier 1a and female half side 1b located on the side opposite to the surfaces VA and BB, there is a circular through hole C, which is located inside the cylindrical cavity C1, which is part of the rear protrusion of the covered and enclosing half-shells and extends right up to the end of the half-shells 1a, 1b, creating a through hole C-C1, which ends in the rear s part of the half-shells 1a, 1b. At the rear of the half walls 1a-1b there is a circular groove 11 of rectangular section, in which the O-rings O are arranged, described below in more detail below.

The semi-shells 1a, 1b are pumped down at the bottom with the first short cylindrical part 12, which is reduced to a proper size in the circumference defined by the cylindrical sections 13. The depressions 14 alternate with the cylindrical sections 13, and these cavities 14 are short cylindrical sections that are shorter than the cylindrical sections 13 Troughs 14 are designed to accommodate one more O rings, the use of which is described in more detail below. In addition, near the free end of the last cylindrical section 13, which ends in a chamfer at an angle of 45 °, in FIG. 8-15, as well as in FIG. 22, 23, 32 shows a depression 15, which is smaller in height, but not less in depth than depression 14, and in which is placed an elastic washer 4 of a known type, shown in FIG. 20 and 21.

FIG. 1-32 it is shown that the cylindrical element 2 is formed by a segment of a known ordinary pipe.

With specific references to FIG. 16-19, as well as FIG. 1 and 32, a clutch 3 is described. The clutch 3 externally has the following form: it consists of two successive cylinders 31 and 32, while the cylinder 32 has a smaller diameter and ends in a threaded section 33. The first cylindrical section 31 of the clutch 3 is shorter than the next cylindrical section 32 Another threaded portion 33 follows a short cylindrical portion 32. The sleeve 3 is hollow; The hollow section 31a corresponding to the cylindrical section 31 has an internal thread along its entire length, and then is replaced inside the cylindrical section 32 by a hollow cylindrical part 32a, while inside the short threaded section 33 there is a cavity 33a having a prismatic hexagonal shape.

Through holes 36 are preferably formed in the middle of the cylindrical portion 32 and extend into the inner hollow portion 32a. The inner portion 31a of the first cylindrical portion 31 has an inner thread 33, which starts from the cylindrical portion 32 for reasons that will be explained below.

FIG. 20 and 21 shows an elastic washer 4, made of a ring, in the circumferential part of which a short break is made. On the outer part of it are slightly inclined short sections 41.

- 4 012541

FIG. 24-27 and also in FIG. 28-31 the following elements are shown.

FIG. 24-26 shows the flange 5, hollow inside. This flange 5, as shown in FIG. 24 and 25, on one side has a short section 51, made with hexagonal turning and very similar to an ordinary nut for bolts. It has an outer support ring 52, preferably curved. The ring 52 is bounded by a flat circular surface 53, which is perpendicular to it. FIG. 25 and 26, it can be seen that a short section with an external thread extends from this ring 52. FIG. 26 shows the flange 5 shown in FIG. 25, in section along the line D1-D1 in FIG. 24, and also it is shown that the thread of the male thread section 54 begins inside the curved ring shown in FIG. 25. In addition, in FIG. 26 shows that inside the flange 5 there is a thread 55, which starts at the same place, which is the starting point for the short section 51, which is made with a hexagonal turning. The thread 55 follows at least until the beginning of the section 54 with an external thread. In addition, the flange 5 is made with a groove 53 'of rectangular cross-section to accommodate the sealing rings.

FIG. 28-30 illustrates the second flange 7, very similar to flange 5. The second flange 7 differs from the first flange 5 in that it does not have a protruding threaded part 54, but instead has a short, cylindrical outside section 71. The second flange 7 is also hollow and made, as can be seen in FIG. 30, with two threaded portions 71 'and 72 having different diameters. More precisely, as seen in FIG. 30, which shows a section along the line UL-UL in FIG. 28, section 71 'has a larger diameter and, consequently, a larger thread diameter than section 72, which begins like a threaded section 52 in FIG. 25 in the same area as the hexagonal region. Thread 72 ends at a threaded portion 71 '. The second flange 7 is bounded by a circular flat surface 73, which is also provided with a groove 73 'for accommodating an sealing ring therein.

The following describes the preferred manufacturing system of a preferred embodiment of the invention, as follows from its description.

According to FIG. 1 and 32, in which the preferred arrangement of the assembly of the above-described elements is illustrated, the collector first takes two half-shells 1a, 1b (shown in Fig. 2-15) and performs two operations before connecting them.

He inserts a gasket into the groove P of the enclosed half tube 1b, which can be made of a ring, preferably by cutting it; This will increase the tightness of the radiator when assembled.

After placing the gasket, the collector applies a thin layer of a suitable adhesive, such as a wear-resistant resin or similar substance, to the surface of the covered half-sheath 1a VA.

After performing the above operations, the collector takes two half-shells and connects them. The connection is performed when the surfaces BA and BB are fully aligned and the resin is well distributed. Also, the groove P of the female half-sheath 1b is completely in contact with the projecting part M of the male half-sheath 1a, and the pins 8a fit the holes of the Pb precisely and firmly. Thus, a hollow element is obtained, i.e. radiator element 1. The pins 8a in the openings of Pb serve to stiffen radiator element 1 and prevent its destruction after it has been compressed during installation. After completing the assembly of a predetermined number of radiators 1, the assembler places the suitable rings in the cavities 14 and the elastic washers 4 into the cavities 15. Then the assembler connects the flange 5 and the coupling 3 by screwing the outer threaded part 54 of the flange 5 into the internal threaded part 31a of the coupling 3, thereby forming a separate rigidly connected part. Then, first positioning the sealing ring in the hollow zone 11 'of the radiator element 1 (corresponding to the hollow zone 53' of the flange 5), the assembler inserts the first of the set of sleeves 3, connected as described, into the radiator element 1 through the hole С above, to flange 5, by inserting surface 53 of flange 5 into abutment into surface 11 of radiator element 1. When the first block of elements 5, 3 and 1 is formed, the collector screws the second coupling 3 to the previous coupling 3 of the group consisting of elements 5, 3, 1, namely the collector uses a hex key, inserting it into a hollow part having a hexagonal section 33a, and tightening the coupling 3 with its thread 31a so that this coupling 3 then engages with the thread 33 of the other previous coupling 3. Then another sealing ring O is inserted into cavity 11 'and attach the second radiator element 1, repeating the previous step of screwing the subsequent coupling 3 to the previous coupling 3 and, thus, a lot of connections "coupling - radiator element" are formed. When the assembler has assembled a predetermined number of connected elements, flange 7 is used to close the set of connections by screwing its threads 71 'onto the threads 33 of the coupling 3.

Once this is done, pipes 2 are attached to the lower cylindrical parts 13 extending from the short cylindrical sections 12 that form a separate block of radiator element 1. The pipe 2 is put on the lower parts 13 simply by pressing it towards the cylindrical section 12 of radiator element 1 When, as shown in FIG. 1, pipe 2 abuts against the surface formed by changing the cross-section obtained by the difference in cross sections when moving from the cylindrical part 12 to the cylindrical part 13, then this pipe 2 is rigidly attached to the radiator element 1. This rigid connection is the result of friction engagement between elastic washer 4 and the inner surface of the pipe 2, which can be observed in FIG. 22 and 23 respectively

- 5 012541 related images on an enlarged scale. FIG. 22 is shown separately from pipe 2 and an enlarged lower round part of radiator element 1 with portions 13, 14 and 15. The elastic washer 4 with its projections 41 is shown, while in FIG. 23 illustrates the next stage, i.e. the introduction of one of the lower cylindrical ends of radiator element 1, which starts from the lower cylindrical pipe 12 with a cylindrical section 13 of smaller section, but with a larger section than its internal cylindrical sections 14 and 15, into pipe 2 , and the enlarged detail view of the elastic washer 4 shows that the protrusions 41 are bent and captured due to friction, due to the elastic pressure on the pipe 2, that is, on its inner surface.

The first described method (assembly of parts 5-3-1 and 3-1 using flange 7 for closing) is repeated at the other end of pipe 2 with a set of radiator elements 1, sleeves 3, flanges 5 and 7 forming the second “separate unit”. In order to close the open ends of the flanges 5 and 7, which will not be used for the introduction of the coolant, the same plugs 6 with thread are screwed into them (see Fig. 27 and 31) by screwing one of the plugs 6 with its thread 61 into the threaded portion 55 of the flange 5, and another radiator plug 6 - its thread 61 into the thread 72 of the flange 7.

Two flanges 5 and / or 7 remain open so that they can be connected, respectively, one to the water inlet pipe and the other to the radiator exhaust pipe that will send the coolant to the circulation circuit.

Claims (4)

CLAIM 1. The manufacturing system of radiators for heating systems, which is obtained by simple assembly of two half-shells (1a, 1b) of the radiator and two connecting fastening elements (3, 4) and in which the finished assembled radiator is obtained using only mechanical systems and without any welding, with This system includes the use of two flanges (5, 7), and the finished radiator is composed of several separate radiator elements (1), composed of two half-shells (1a, 1b), and a segment of a cylindrical pipe (2) connected to a separate radiator element (1), characterized in that the two said connecting fastening elements (3, 4) are a threaded sleeve designed to connect and attach to each other by screwing two of these half-shells (1a, 1b) that make up the radiator element (1) , and for attaching and attaching the radiator element (1) to at least one radiator element (1), and an elastic washer designed to permanently attach a segment of the cylindrical pipe (2) to the radiator element (1). 2. The system according to claim 1, in which the coupling when it is inside the radiator element (1) protrudes from it at its ends, making it possible to tightly screw it with the following couplings on either side. 3. The system according to any one of the preceding paragraphs, in which the radiator element (1) may contain a different number of cylindrical elements extending from it to ensure the implementation of the number of vertical hollow posts from the minimum of two posts to the maximum amount that is compatible with the mechanical resistance of the material, of which the radiator element is made. 4. The system according to any one of the preceding paragraphs, which in addition to the possibility of changing the number of hollow racks that can be used, also provides the possibility of significant variation in the finished radiator in height.