FI13245Y1 - Ventilation duct and arrangement to accomplish auxiliary installation markings - Google Patents

Abstract

1. Ventilation duct (2), such as forms part of the ventilation system (1) and is substantially circular in cross-section with a substantially straight or curved longitudinal axis (3), and the ventilation duct (2) comprises a sheath (5) surrounding the flow space (4) with an inner surface (6) ) and the outer surface (7), characterized by the fact that the outer surface (7) of the jacket (5) of the ventilation duct (2) has one or more installation aid markings (8) for positioning two successively installed ventilation ducts relative to the direction of rotation of the longitudinal axis (3). In addition, protection requirements 2-5.

Description

AIR DUCT AND ARRANGEMENT INSTALLATION HELP LABEL

TO GET TIME Background of the invention The present invention concerns a ventilation duct according to the introduction of protection requirement 1, which can significantly facilitate the construction of ducts in construction site conditions.

The invention — still applies to the arrangement of protection requirement 5 = for providing an installation aid marking in the ventilation duct.

When building a = ventilation system = with ventilation ducts that can be connected to each other, problems are often encountered when sections of the ventilation ducts have to be formed oriented in several different directions. Such multi-directional installations require the installers to constantly check the installation work and the piping in order to be sure of the correctness of the alignments. This makes the work slow and therefore also expensive.

Brief description of the invention The goal of the invention is to create a ventilation duct for installing such in such a way that the above-mentioned problems can mainly be solved.

This goal is achieved in such a way that, in accordance with this invention, the ventilation duct and the arrangement for providing an installation aid marking to the ventilation duct have the characteristics defined in the protection requirements. More precisely, the ventilation duct N 25 according to the invention is mainly characterized by what is presented in the distinguishing part of claim 1 N. The arrangement according to the invention to create the installation aid mark S — the ventilation duct is in turn = mainly 2 characterized by what is presented in the distinguishing mark part of the protective claim 5.

= Advantageous embodiments of the invention are subject to independent c 30 protection claims.

S The invention is based on the fact that with a simple = feature added to the outer surface of the ventilation duct S, it is possible to facilitate the precise alignment of consecutive N ventilation ducts to each other. In this way, additional check measurements can be avoided, but the installation according to the drawings or other plans can be completed.

Other advantages brought by the invention are presented below, when specific embodiments of the invention are described in more detail.

Brief description of the drawings In the following, some advantageous embodiments of the invention are explained in more detail by referring to the attached drawing, where figure 1 = shows a principle picture of a ventilation system, figure 2 shows schematically the location of the installation aid markings according to the auxiliary lines on the outer surface of the ventilation duct, figure 3 shows the 90 degree angle made with the ventilation ducts led by the installation aid lines, in the figure 4 shows the successive 90-degree angles made by the ventilation ducts led by the installation guide lines, where the upper corner of the figure is at the same time twisted 90 degrees with respect to the previous one, figure 5 shows the location of the installation aid markings according to the guide lines and dot-like markings according to the second embodiment of the invention on the outer surface of the ventilation duct, and figure 6 shows the section of the ventilation duct in the figure 5 from section A-Ailmenting some placement of dot-like markings.

Detailed description of preferred embodiments In the present drawings, the ventilation channel or the arrangement for creating the installation aid marking is not shown to scale, but the figures are schematic, expressing the basic N structure and operation of the preferred embodiments.

In this case, the N structural parts indicated with reference numbers in the attached figures correspond to the structural parts marked with reference numbers in this explanation.

S Figure 1 shows a principle picture of the ventilation system 1 of a small house S, where the interconnected ventilation ducts 2 E 30 form parts that transport air to or from various end devices. © In the present solution, the ventilation ducts are essentially circular in cross-section S and have an essentially straight or curved longitudinal axis 3. N Such a tubular ventilation duct comprises, in accordance with figure 2, an interior that forms a flow space 4 and an air-impermeable jacket 5 surrounding this, which has an inner surface 6 and an outer surface 7. Most commonly. the exposed ventilation ducts are made of metal threaded pipe or polymer pipe. As can be concluded from Figure 1, the = ventilation system 1 formed by the ventilation ducts 2 is, even at its simplest, quite multifaceted, comprising sections oriented in several different directions. It is precisely these multi-directional installations that have been problematic, requiring the installers to constantly check the installation work in order to be sure of the correctness of the alignments. In order to reduce these known installation problems, the present solution has provided at least one installation aid marking 8 on the outer surface 7 of the jacket 5 of the ventilation duct 2, which helps the positioning of two ventilation ducts to be installed one after the other while taking into account the possible mutual rotation of the ventilation ducts with respect to their longitudinal axes.

Said installation aid marking 8 can comprise one or more point-like markings provided on the outer surface 7 of the jacket 5 of the curved ventilation duct 2 according to Figure 5. The installation aid marking can also comprise one or more auxiliary lines in the direction of the longitudinal axis 3 of the ventilation duct according to Figures 3, 4 and 5, which can be continuous or broken.

If two or more installation aid markings 8 have been provided in the ventilation duct 2, the central angles 9 between the rays R directed to the longitudinal axis 3 are preferably formed to be the same size or multiples of said central angle. As a general rule, the installation work is already significantly facilitated by two installation aid markings, which are arranged symmetrically on opposite sides of the outer surface, or three installation markings N, in which case the third one is placed equidistant between the aforementioned ones, as shown in Figure 2 AN. In this way, adjacent > central angles are created between these three installation marks, both of which are 90 degrees. The number of installation aid markings = can be implemented if necessary depending on the difficulty of the installation site, in which case © 30 in more difficult sites, there can be, for example, eight E pieces evenly distributed around the outer casing every 45 degrees.

© The installation work can also be made significantly easier with the embodiment of the solution according to Figures 5 and 6 S, where the straight N ventilation ducts are equipped with one or two opposite auxiliary lines and the S 35 curved ventilation pipes with curved longitudinal axes are preferably equipped with four regularly spaced dot-like markings according to Figure 6.

The installation aid markings according to the solution are used in the construction of ventilation system 1 = as follows.

When installing the ventilation duct 2, which is essentially circular in cross-section, in the manner described above, it has an essentially straight or curved €longitudinal axis 3. On the outer surface 7 of the jacket 5 surrounding the ventilation duct flow space 4, one or more installation aid markings 8 are made on the outer surface of the jacket of the ventilation duct before the installation work begins. ventilation ducts are selected to be aligned with each other in order to achieve a mutual twist in relation to the predetermined longitudinal axis.

In this way, the possible mutual rotation of the longitudinal axis of two consecutively installed ventilation ducts is easy to implement and the ventilation ducts can be precisely positioned relative to each other, as shown in Fig. 3, 4 and 5.

The installation aid marking 8 provided on the outer surface 7 of the jacket 5 of the ventilation duct 2 is made either as a point-like marking or as an auxiliary line parallel to the longitudinal axis 3 of the ventilation duct.

These can be achieved at the installation site itself, but more advantageously they are already achieved in connection with the manufacture of the ventilation duct.

When forming more than two installation aid markings on the outer surface of the ventilation duct, they are preferably created in such a way that the central angles between the rays directed from them to the longitudinal axis are formed to be the same size or a multiple of the said central angle.

Figure 3 thus shows the 90 degree duct assembly formed by two straight and one curved N ventilation ducts 2, where in the AN example, two straight and curved ventilation ducts > installation aid markings 8 always meet. degree angles at the same time E when the upper corner of the pattern is turned 90 degrees compared to the previous one.

In figure o, it can be seen that in the lower corner, the installation aid marking of the straight ventilation duct S is matched to the installation aid marking N on the inner fold of the curved ventilation duct. — In the upper corner there is an installation aid marking for the straight S 35 ventilation duct — in turn — matched — to the installation aid marking on the outer fold of the curved ventilation duct.

The installation aid marking 8 shown — can be =: provided to the ventilation duct 2 either by hand at the installation site or more reliably when preparing the ventilation duct. So that such a marking does not cause aesthetic harm or require separate priming work before a possible 5 surface treatment, the marking is preferably done without deforming the outer surface 7 of the ventilation duct. The arrangement to be used in manufacturing to create an installation aid marking in the ventilation duct thus comprises the means to be adapted to the pipe manufacturing line, such as produce either a momentary or continuous drawing marking or a particle jet directed to the outer surface of the ventilation duct. This particle jet that marks the outer surface of the ventilation duct includes, for example, a fiber laser or an inkjet printer.

Of course, it is also possible to create an installation aid mark on the surface of the ventilation duct by deforming it, unless special requirements are placed on its visual appearance. In this case, an auxiliary line can be formed on the outer surface of the ventilation duct with a straight longitudinal axis, for example by engraving — mechanically or with a laser. The installation aid marking 8 can be achieved by pressing on the parts of the ventilation duct to be produced, for example by separately punching or cold hammering or with a punch in the pressing tool during manufacture.

It is obvious to a professional in the field that as technology develops, the basic idea of the invention can be implemented in many different ways. The invention and its embodiments are therefore not limited to the examples described above, but may vary within the scope of the protection requirements.

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Claims (5)

Protection requirements 1. ventilation duct (2), such as forms part of the ventilation system (1) and is essentially circular in cross-section with an essentially straight or curved longitudinal axis (3), and the ventilation duct (2) comprises a sheath (5) surrounding the flow space (4) with an inner surface (6) ) and the outer surface (7), characterized by the fact that the outer surface (7) of the casing (5) of the ventilation duct (2) has one or more installation aid markings (8) for positioning two successively installed ventilation ducts relative to the direction of rotation of the longitudinal axis (3). 2. Ventilation duct (2) according to protection claim 1, characterized — in that the installation aid marking (8) comprises a dot-like marking on the outer surface (7) of the jacket (5) of the ventilation duct (2). 3. Ventilation duct (2) according to protection requirement 1, characterized in that the installation aid marking (8) comprises an auxiliary line parallel to the longitudinal axis (3) of the ventilation duct provided on the outer surface (7) of the jacket (5) of the ventilation duct (2). 4. A ventilation duct (2) according to one of the previous protection requirements, characterized by the fact that when there are more than two installation aid markings (8) in the ventilation duct (2), the central angles (9) between the rays (R) directed to the longitudinal axis (3) N are the same size or a multiple of the said O central angle . 8 2 | | 5. An arrangement for creating an installation aid marking (8) in the ventilation duct (2), known for the fact that the E arrangement comprises the means to be adapted to the pipe manufacturing line O of the ventilation duct (2), which means produce the outer surface (7) of the ventilation duct (2) I without damaging the momentary or continuous installation aid marking O (8 ). >"