FI115666B - Control damper - Google Patents

Description

115666 Adjusting damper

The invention relates to a damper.

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Damper damper structures are known in the art, in which the damper damper is formed from a plurality of parts by welding, riveting, etc. Also known are damper damper solutions in which the damper damper casing body is made of, for example, extruded material and made as a wing profile. Particularly known in the art are fire damper structures, which are casing structures and rectangular cross-sections, in which the parts of the rectangular casing structure are made of different structural components and joined together, for example by riveting.

This application discloses a completely new type of rectangular cross-sectional damper solution. The damper according to the invention is made of one continuous blank. In accordance with the invention, it has been realized to use a metal-cutting laser such that the laser is used to burn reliefs at the fold points, preferably through the sheet thickness through which the blank is: folded into a housing structure. In the solution according to the invention, a swollen box structure is formed by folding the sides formed in the applied blank structure.

Thus, in accordance with the invention, a new type of damper is formed which comprises a rectangular cross-section and is made of one continuous sheet.

., '; It is one of the inventions of the invention to use attenuation compressors at refractive points. They are: · made by laser burning. In this way, one continuous blank can be bent into a housing structure along the grooves. · Not all bending lines should be fitted with weak · ·; nysurilla.

'' '' The top sides and the end surfaces on the side are formed by a single continuous:: from the initial blank to the sheet blank, i.e. the sheet blank, already at the • 1 ·, 30 cutting points, the bends, i.e., lacerations. Preferably, it extends through the sheet blank thickness 2 115666 and is a discontinuous groove. Preferably, the groove width is less than 1mm and preferably 0.09mm to 0.2mm.

By using the weakening grooves according to the invention, bending can be performed manually.

5 The weakening groove enables precise folding and thus enables the damper casing structure to be formed from a single continuous blank.

The damper having a rectangular cross-section according to the invention is particularly suitable as a fire damper, leaving a space within the structure which can be filled with heat-insulating material. The damper is also suitable for air flow control.

The damper structure according to the invention is characterized in the ventilation ducts or the like as set forth in the claims.

The invention will now be described with reference to some preferred embodiments of the invention shown in the figures of the accompanying drawings, but which are not intended to be limited thereto.

; ; ; Fig. 1A shows a prior art damper structure which applies a '': 20 becomes a fire damper, for example.

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Fig. 1B is an axonometric view of a damper according to the invention in an air duct.

Fig. 2A is a perspective view of the opening of the damper according to the invention.

": Figure 2B shows the initial steps in forming the housing structure.

Fig. 2C illustrates a damper folded into a housing structure, wherein the structure; '> ,; according to the invention is made up of a single unit starting material.

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Figure 2D is an axonometric view of a pre-folded damper.

Figure 3A shows a laser-weakened groove at the fold. The groove is a broken groove and extends through the thickness of the blank.

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Fig. 3B shows another embodiment of the groove according to the invention, in which the groove does not extend through the thickness of the blank, but is a recess in the surface of the blank.

Fig. 1A shows a prior art damper structure comprising six six damper dampers 10 rotatable in a frame K, whereby the duct associated with the device can be closed, for example, in a fire situation. Each damper 10 in the embodiment of Fig. 1A is prior art and comprises a rectangular cross-section whose housing structure is formed by riveting.

Fig. 1B is an illustrative and axonometric representation of the damper 10 according to the invention. The damper 10 is intended to mean a fire damper or, generally, an air flow damper. The damper 10 shown in the figure comprises a rectangular cross section and is a housing structure. As shown in the figure, it is positioned in the duct 11, preferably in the ventilation duct. It may comprise a frame K as shown in Figure IA.

. '. As shown in Figure IB, the air-conditioning channel 11 is a rectangular cross-sectional channel, respectively. However, the rectangular cross-sectional damper structure may be: "also used in circular ducts using a separate connecting part (not shown) comprising a counter-surface suitable for filter-cross-section.

:: The damper 10 is adapted to be pivotable about a geometric axis Xi 25 on an axis 12. The damper 10, which may be, for example, a fire damper, can be turned by the actuator 13. In this case, for example, in the case of a fire, the damper I | <10 puts the open position duct 11 into the closing position. With actuator 13 screws: ·; tearing the damper 10 through its shaft 12 and not the linkage shown.

Fig. 2A shows the initial blank 100 of a damper 10 with a box-shaped rectangular cross-section assembled and bent according to the invention. It is 4 115666 plate blank. The plate blank 100 is preferably formed by laser cutting from a larger plate and the initial blank is formed on all sides of the damper 10 having a rectangular cross-section, and preferably also a projection 14 on which the seal M of the damper 10 can be supported. In Fig. 2A, the structure 5 is denoted by the reference numerals 15aj and 15a2 on opposite sides of the damper which support when the damper 10 is closed against the flow. The narrower top and bottom sides of the damper 10 are designated 16a] and 16a2. The narrower sides of the damper are indicated by reference numerals 17ai and 17a2. As shown in the figure, the side edge portions 17au, 17ai2 and 17a2.i, 17a2 2 come in the overlay structure. They are facing each other at their end edges. The apertures U on the axis are thus formed with side edge portions 17ai.i, 17ai2 and side edge portions 17a2.i, 17a2 2. Figure 2A shows laser-weakened grooves with reference numerals 18ai and 18a2. The structure according to the invention has at least weakening grooves 18ai and 18a2.

The sides 15ai and 15a2 are facing each other. The sides 16ai and 16a2 face each other 15 and the sides 17ai, 17a2 face each other. In the figure, other bending lines are denoted by the reference numerals 18a2, 18a2, 18a4 ... They may also consist of a weakening groove according to the invention. According to the invention, at least then both longitudinal folds of the damper 10 on the side 16ai are thus made along the grooves 18ai and 18a2: '·'. The casket part is marked with reference number 14 and the gasket with the letter M.

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Figure 2B shows the folding of the blank 100 in a step where the side edges t · 17ai.i, 17ai.2; 17a2.i, 17a2 2, comprising passageways U on shaft 12 bent upwards. The side border 17ai.i further comprises a fold 17au; side border 17ai.2 · ... · fold 17aii.2 and side border 17a2.i fold 17a2] and side border 17a2.2 fold 17ä2 2. These folds 17äu, 17äi.2, 17ä2.i, 17ä2 2 are 90 ° folds and are used to form pages 15a; and side edges parallel to planes 15a2 * ··· 'on the damper 10 for line X \. The figure shows the folds t1 and t2 which comprise the weakening grooves 18a1, 18a2. The casket part is denoted by reference numeral 14 and affixed: the sealing band by the rigger M. The bending direction is indicated by the arrow S i.

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Fig. 2C shows a step in which the damper 10 is formed as a housing structure by bending the opposite end faces in parallel, whereby the side edge portions 17au, 17ai.2 overlap and the side edge portions 17a2.i, 17a2.2 also overlap. Fig. 2C shows the formed housing structure 5 ready.

Fig. 2D shows an adjusting damper in the housing structure in a folded axonometric representation before the sealing strip M is attached.

Fig. 3A shows a laser-made weakening groove 18ai / 18a2 through a sheet thickness d, allowing the housing structure to be precisely folded as the folding follows a laser relief groove 18ai / 18a2- through-hole / slot for thickness d. Its width ε is preferably less than 1 mm and preferably 0.09 mm to 0.2 mm and most preferably 0.1 mm. It is preferred that the width of the groove 18ai, 18a2 is small. In this case, as the plate is bent, the gaps will close and the housing structure will become closed.

:; In the embodiment of Figure 3B, the groove 18ai / 18a2 is formed by a laser recess on the surface 100 of the blank 100. The groove 18ai, 18a2 does not extend through the thickness *: "d of the sheet blank 100. The width 1 of the groove 18ai, 18a2 is preferably in the range 0.09 mm to 0.2 mm.

In both embodiments of Figure 3A and 3B, the weakening groove 18ai, 18a2 may be a discontinuous groove or a continuous groove.

25 ...: * In the embodiments shown, the damper 10 is preferably a fire damper, whereby in a fire situation it is rotated to an air duct closing position. However, the damper 10 may in general be an air flow damper with which the amount of air flow is adjustable.

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Claims (12)

115666 An adjusting damper (10), which is a casing structure and comprises opposing face faces (15a, 15a2), facing face and bottom faces (16ai, 16a2) and facing edge faces (17at, 17a2), characterized in that 10) the casing structure is a structure formed of one continuous sheet blank (100) with a weakening groove (18ai, 18a2 ...), whereby the casing structure is formed by bending along said weakening groove (18ai, 18a2 ...). The damper (10) according to the preceding claim, characterized in that the weakening groove (18ai, 18a2 ...) of the blank (100) is an elongated opening / slot through the thickness (d) of the blank (100). The damper (10) according to the preceding claim, characterized in that the width (e) of the weakening groove (18ai, 18a2 ...) is less than 1 mm. The damper (10) according to the preceding claim, characterized in that the width (e) of the weakening groove (18ai, 18a2 ...) is in the range of 0.09 mm to 0.2 mm. The damper (10) according to claim 1, characterized in that the weakening groove (18ai, 18a2 ...) is a recess in the plate blank (100) which is? i '. , 'Does not go through the thickness (d) of the blank (100). Adjusting damper (10) according to one of the preceding claims 1 to 5, characterized in that the weakening groove (18ai, 18a2 ...) is intermittent. A damper (10) according to any one of the preceding claims, characterized in: '' 1, characterized in that the weakening groove (18ai, 18a2 ...) is a surface (Ti) of a plate '..' blank (100) made with a metal cutting laser. recess. 30 I i 115666 The damper (10) according to one of the preceding claims, characterized in that the peripheral sides (17ai, 17a2) of the damper (10) comprise a through opening (U) for the shaft (12) of the damper (10). Adjusting damper (10) according to one of the preceding claims, characterized in that the adjusting damper (10) has lateral edge portions (17a.i, 17a.2) associated with the front side (15aj) and side edge portions (17a2.i, 17a2.2) associated with the frontal side (15a2). ), when forming the housing structure, are bent at the end edges against each other. The damper (10) according to claim 5, characterized in that the shaft through hole (U) for the shaft (12) is formed in the lateral edge portions (17au, 17ai.2; 17a2.i, 17a22). The damper (10) according to any one of the preceding claims, characterized in that the damper (10) is a fire damper which, in the event of a fire, can be rotated to an air duct closing position. The damper (10) according to any one of the preceding claims, characterized in that the damper (10) is an air flow rate controlling structure and is a rectangular cross section. »115666