CS203110B2 - Frash air pass for room aerotion - Google Patents

Abstract

1488983 Axial air-flow fans; silencers J EBERSPACHER 24 Oct 1975 [24 Oct 1974] 43888/75 Headings F1B and F1C [Also in Division F4] A ventilator comprises an outer casing formed by two parts 1, 2 or, as shown, by three parts 1, 2, 3 which are spaced apart, parts 1, 2 having a fresh air intake opening 6 and a fresh air discharge opening respectively, the openings being protected by slats, and a fan 12 removably mounted in part 1, wherein transmission of noise from part 1 to part 2 through the casing walls is reduced by the spacing of the parts 1, 2, 3. One of the gaps 4 between the parts 1, 2, 3 may accommodate a window pane around an opening therein and the other gap 4 may be closed by a resilient sealing gasket 5. Alternatively both gaps 4 may be closed by gaskets 5. Each part 1, 2, 3, or the part 3 alone, may be lined with sound damping material e.g. glass wool (11), Figs. 2, 3 (not shown), held in place by a perforated sheet metal plate or plates (10). The air in its passage from the fan 12 traverses an elbow bend. The parts 1, 2 may be identical. The discharge opening in part 2 may be arranged to direct air downwards within a room, and may include adjustable slats (14). Part 1 may include an electric heating element controlled by a thermostat and a time switch, and means for filtering and sterilizing the air.

Description

The invention relates to a fresh air leakage consisting of a box-shaped profile in which a fresh-air fan, lamellas and noise-damping air inlets and dampers are releasably arranged inside the box-shaped profile.

Such fresh air leaks are used to ventilate both residential and industrial premises where windows cannot be opened for high external noise, for example in industrial buildings or flats near industrial areas, busy streets and roads, or airports. Such redundancies can also be used where a building permit prohibits the arrangement of windows on some front of a house.

They are known to be free passages of fresh air, preferably used together with windows. Such culverts are arranged under non-opening windows and allow fresh air to enter the room.

Furthermore, room ventilation devices and noise damping devices are known. Such a device is, for example, provided with a channel-shaped body lined with sound-damping means. This body allows the passage of air and is provided with a ventilation chamber and a fan. The ventilation chamber is formed as a separate and replaceable part in the channel body and is provided with a frame aligned with the channel. The installation of such a device requires a considerable range of adaptation and fitting work, which is all the more difficult because the inserted units must be housed in a sound attenuating mass. Therefore, the fan motor or fan itself is mounted on a bellows, which is spring-loaded, so that when starting and stopping the motor, dangerous tipping moments occur.

The cost of producing box-type culverts is considerable, since each individual culvert must be crafted.

2031Ю

Furthermore, sound-damping windows with fresh and exhaust air passages as well as sound-damping are known. Such a window is double and has two air passages, one for supplying fresh air, provided with a fan and the other for exhausting air from the loco, one of which is arranged above the window and the other below the window. In both culverts, their length is equal to the width of the window and their width is equal to the depth of the window. The air inlet is arranged at one end of the culvert and the outlet at the other.

With this arrangement, fresh or exhaust air flows along the entire length of the air passage and the air passages are acoustically connected to the space between the windows. To draw in the required amount of air, fans are arranged at the air inlets and the outlet openings are provided with a lamella grate.

The disadvantage of this arrangement is the demanding assembly and high consumption for the placement of individual parts. Another complication is the incorporation of noise-damping elements. If heating devices are installed in the culverts, this creates additional costs, since the air culverts are designed as cabinets, closed by a lid during the final monoage, and the heating device must be installed in an open and adequate deep cabinet.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a fresh air vent for a room-mounted ventilation system which is simple to assemble in a variety of dimensions from a small number of building elements and has a good sound attenuation and noise absorption.

The problem is solved by providing a fresh air leak formed by a box-shaped profile, in which a fresh air fan, air inlet and outlet openings protected by slats and noise damping are arranged inside. of a box-like profile, which differs from the previously known embodiments in that, according to the invention, the box-like configuration is composed of front and rear sections which are identical, the air holes being formed in both parts which are rotated 180 ° to one another so that the air openings are at opposite ends of the box-shaped profile and a flexible seal is arranged between the individual parts of the box-shaped profile.

In order to be able to produce culverts of different depths, according to the invention, a frame-like central part is arranged between the front and rear panels.

In order to reduce the noise level, a noise damping element is fastened to the lip-like part of the workpiece according to the invention.

To improve airflow as well as to improve: The acoustic properties of the fan are arranged transversely in the cabinet profile.

In order to prevent the noise from being absorbed by the blown air stream, it is fixed according to the invention to the outside of the box-like or framed part by means of a perforated sheet.

In order to increase the space of the ventilated room, a heating device comprising an electric heating element with a safety thermostat as well as means for switching on and off the electric heating element, which are optionally provided, is provided in the box profile. as a timer.

According to the invention, the fan and / or the heating device are designed as retractable elements to facilitate the mounting.

Where it is necessary or expedient to reduce the flow of fresh air into the room at the bottom, according to the invention, in the lower wall of the rear part, a lamella is formed for the fresh air outlet.

The fresh air leakage for room ventilation created according to the invention has numerous advantages.

The modular design of the fresh air leakage makes it possible to substantially rationalize its production and substantially simplify storage, since only two identical housing halves can be manufactured in which different inclusions, including sound absorbing materials, can be easily arranged.

The split design of the box-like profile also has a significant functional advantage, since the gap between the parts, which may remain loose or be filled with a flexible seal, prevents noise propagation and thus contributes to its damping.

The use of the frame-shaped central part makes it possible to create a variation of different depth, i.e. for different widths of walls, using the same box-shaped parts for all depths. The frame part is easy to manufacture and can be stocked in various widths for ready assembly; leaks of different depths. The R-movable middle part also creates ·. sufficient space for possible additional fittings such as heating elements and the like. ,

Fixing noise to the framed center piece is particularly advantageous. since the noise absorbing material is only put into the buckling together with the central part and does not need to be attached to the other parts, which not only facilitates the mounting of the buckling, but also increases the noise reduction efficiency.

The attachment of the sound attenuating sheet by means of the perforated sheet prevents the sound attenuating compound from being discharged in the form of particles in the case of a higher air flow.

The modular design of the air leak makes it possible to adapt it not only to different dimensions but also to different conditions and requirements.

For example, the pre-heating of fresh air with a heater in the air-purge has the advantage that persons staying close to the air-purge are not blown by cold air, so that a ventilated room can be heated on cold days so that the air-purge acts simultaneously. also as hot-air heating. This heating also has the advantage of preventing steam from condensing from the cold air, creating deposits and reducing the service life of the gas.

In addition to or instead of preheating the air, a filter device may be installed in the fresh air. This is particularly advantageous in dusty environments, such as near pile heaps, stone sheds, and the like.

For increased hygiene requirements, such as in non-mothers, schools and the like, embryo capture devices can also be built into the fresh air intake.

The longitudinal distribution of the fresh air passage facilitates the insertion of built-in elements and equipment, so that precise manufacturing tolerances are not required. Since the separating joints prevent the fan noise from spreading to the ventilated area, it is also possible to use hammers and therefore cheaper fans.

All in all, the fresh air passage created according to. of the invention, the penetration of noise from the outside into as effectively as a double-skinned window.

Examples of embodiments of fresh air leakage for ventilation according to the invention are shown in the accompanying drawing, in which Fig. 1 shows a three-part culvert in a spatial representation, Fig. 2 a two-part culvert in longitudinal section; in cross-section and in FIG. 4 a two-piece culvert with side lamella cutter and a heating device in cross-section.

The three-piece fresh air vent shown in FIG. 1 consists of a front panel 6 separated by a separating gap 6 from the frame central panel. which is connected to the rear part J by means of a further dividing joint.

In the example shown, the separation gap 2 between the front panel 6 and the framed spraying panel J is empty, while the other separation gap 2 between the frame and the friction panel J and the rear panel 2 is filled with a flexible seal 2. The central frame part 2 is free, in particular because a fan 12 is located in the front part 1 of the culvert and the empty separating gap 8 prevents the noise of the fan 12 from being transmitted to the other culvert parts. In order to ensure the exact dimension of the separating gap 6, spacers are provided on the periphery of the frame-shaped central part.

An opening 4 is formed in the front part of the buckling, covered by a lateral louvre X, which is an inlet opening for fresh air. A fan 48 for providing fresh air is arranged downstream of the side lamella. After suction, the fresh air turns 90 ° and flows along the length of the cabinet profile through the culvert. In the exemplary embodiment shown in FIG. 4, a heating device is provided downstream of the side lamella element, which consists of an electric heating element 8 and a safety thermostat 8. The safety temperature is set to the upper permissible air temperature, thus preventing excess air from escaping from the fresh air passage.

The fresh air passage is provided with mass on at least one side

11th TLS ^ iczí sound, especially at h ^é! .U ^k. In Fig. 2 and 3 an embodiment is shown voudíln ^{d e p} ropust ^of fresh air, wherein the material £ 1 tlumicí- noise is fastened to the two walls of the box profile. Fiberglass or a similar material is usually used as the noise damping mass 11..

Individual particles can easily be removed from such a material and entrained in a ventilated room by a stream of air. To prevent this, the mass is £ 1. a damping noise, covered by a perforated plate 60 which forms a leading funnel 80 at the point where the fresh air flow direction changes.

Instead of a side lamella X arranged at the aperture 8, for example, the rear panel 2 may be provided with a lower lamella grille 54 arranged in the lower wall of the rear panel 2, which serves for the discharge of fresh air to the mill. Such an arrangement is particularly advantageous if a heater, for example a central heating, is arranged under the fresh air.

The directions of fresh air inlet and outlet can be combined in various ways. Instead, fresh air enters the side lamella X arranged at the aperture 6 formed at one end of the front panel 6 and also exits the side lamella X arranged at the aperture 6 formed at the other end of the rear panel. According to another exemplary embodiment, the air may enter the sidewall through the lamella lattice X and exit the lower lamella lattice 44.

In this case, the front panel (6) and the rear panel (X) are not entirely identical and differ by flying the slat openings. The condition of complete matching of the front panel £ and the rear panel X can also be achieved with the use of a lower slat grate ££. In this case, the lower lamella lattice 64 is used as the cell at the rear panel 2 as the outlet or at the front panel 6 as the inlet. Then, in the second part, the upper lamella grille (not shown) can be arranged in a function opposite to that of the lower lamella clamp.

The ease of assembly and the permeability of the interior of the fresh air passage make it possible to adapt the interior equipment and arrangement to the different conditions and needs. Thus, for example, the fan 6 need not be arranged immediately adjacent the opening 6, but be secured laterally. Additionally, a variety of devices, such as filters, embryo capture devices, and the like, can be installed in the propnus-like profile.

Since the purpose of the fresh air passage is not only to reduce the noise produced by the operation of the fan 12, but also to prevent the propagation of noise from outside to inside the ventilated, the dividing gap need not always be arranged in the longitudinal vertical plane. .

As a rule, the dividing gap 6 must always be formed transversely to the direction of propagation, noise. Thus, if the noise propagates in a vertical direction, for example, it is expedient to divide the separation gap in a horizontal plane.

Claims (8)

SUBJECT OF THE INVENTION 1. A fresh air vent for room-to-room ventilation, comprising a cabinet team profile, in which a fresh air fan, air inlet and outlet apertures protected by slats and sound attenuation are disposed within the cabinet profile, characterized in that the cabinet fart is composed of a front part (1) and a rear part (2) which are identical and between which a separating gap (4) is formed, the air holes (6) being formed in the two parts (1, 2) which are The openings (6) for the air are at the opposite ends of the box-shaped profile and, if necessary, a resilient seal (5) is arranged in the separating joint (4). 2. A filter as defined in point 1, characterized in that:. A framed central part (3) is arranged between the front part (1) and the rear part (2). 3. A filter according to claim 2, characterized in that it is framed. the sound absorbing material (11) is fastened to the central part (3). 4. A filter according to claims 1 to 3, characterized in that a fan (12) is arranged transversely inside the box profile. 5. A filter according to claim 3, characterized in that the sound-absorbing material (11) is fixed by means of a perforated sheet. 6. A filter as set forth in claims 1 to 5, characterized in that a heating device comprising a electrically operated heating element (8) with a safety thermostat (9) and means for switching the electric heating element (8) on and off is arranged in the housing profile. ), possibly formed as a timer. . 7. The culvert according to claims 4 and 6, characterized in that the fan (12) and / or the heating device are provided as pluggable elements. 8. A filter as defined in items 1 to 7, excluding: A method according to claim 1, characterized in that the rear part (2) is provided on its bottom wall with a bottom lumpy grate (14).