EP3282201A1 - Device for protecting a ventilator against insects - Google Patents

Abstract

Insect protection device 1 for a arranged in or on a wall 2, a building wall or a ceiling fan 3, with a through the wall 2 having bore 4, which forms an air duct 5 for an air passage of air flow for exhaust air and / or supply air that in the Bore 4, a ventilation tube 6 is inserted, which connects the arranged in an interior 7 on an inner wall 8 components of the fan 3 with the outer side 9 on an outer wall 10 having components of the fan 3, wherein the insect protection device 1 from the side of the interior 7 in the ventilation pipe 6 is slidably insertable along an inner wall 11 of the ventilation pipe 6 and positioned in the ventilation pipe 6 an end position 12.

Description

The invention relates to an insect protection device for a fan arranged in or on a wall, a building wall or a ceiling according to the preamble of claim 1.

In the device for insect protection of such fans, which are arranged lying in a wall, a ceiling or on a wall or a ceiling, there is generally the problem that the introduced grid mesh for insect protection generates high pressure losses at the expense of the performance of the fan. Furthermore, the known insect screens with arrangement on the fan near the outer facade of a building, especially in higher floors on a wall of a building, difficult or intolerable to achieve. Cleaning or maintenance is made difficult or is not feasible. Consequently, contamination of the insect screen has a limiting effect on the efficiency of the passage of air and, in the worst case, can lead to a functional failure of the fan.

From the DE 38 19 324 A1 is a venting device for rooms by inner and outer walls known, wherein at least one bore is guided by the wall. In this case, a pipe is pushed through this hole, which can accommodate at its ends statements against insects, rainwater and / or a closure for the regulation of air passage. For this purpose, the fan to the interior facing side of the wall on a connector, which is inserted by means of elastic ribs in the tube and is held immovable. On the side facing the outer wall of the fan, a pipe section can also be inserted by means of elastic rings holding in the tube, which has a holding device into which an insect screen can be placed.

The insect screen or the insect screen can be mounted in a known method only from the outer wall. Both the installation and subsequent maintenance work on the insect screen can only be tackled from the outside, as the insect screen is not accessible from the inside. Furthermore, due to its manner of attachment to the fan and its material after maintenance, the insect screen can not be reused, which requires an additional cost of replacement.

Furthermore, insect screens are known to be familiar to fans, which are operatively connected inserted into the weather protection applied to the outer wall. This insect screen is difficult to access only accessible from the outer wall, in exchange on the fan or weather protection cumbersome and can not be cleaned after contamination. Remedy creates a renewal, which also proves to be costly.

The invention is therefore based on the task to enable assembly and disassembly of an insect protection device in or on a wall fan, which fixes all the above disadvantages, is inexpensive and easy, fast, safe and precise way with little space cleaning allowed with reuse.

To solve this problem, an insect protection device for a fan on a wall or a ceiling or in a wall or a ceiling is proposed, with a wall having through the bore, which forms an air passage for an air passage of air flow for exhaust air and / or supply air. Into the hole, a ventilation tube is inserted through which the air can pass. In addition, the ventilation pipe connects the arranged in an interior to an inner wall components of the fan with the outside on an outer wall having components of the fan.

In an advantageous embodiment, the insect protection device is integrally formed. With one-piece construction of the insect repellent device all essential components for protection against invasion of insects and for mounting in an assembly are included and can be mounted with a single handling in the fan and also disassembled for the purpose of maintenance and cleaning. The assembly may be made in several parts prior to assembly of the insect protection device, which connects with mounting by positive and / or non-positive connection as a one-piece component. Likewise, a one-piece assembly of the insect protection device is made of a material conceivable. Reuse after cleaning the insect repellent device is therefore possible without problems and from the following advantageous features. Effort and costs of a new insect screen are therefore unnecessary. The insertion or removal of the insect protection device is preferably carried out from the side of the interior. By providing easy access to the insect protection device from the inside of a room, cleaning of the insect protection device is possible even in hard-to-reach, externally accessible buildings, such as multi-story buildings. For quick and easy handling of assembly or disassembly of the insect protection device, the ventilation tube is guided displaceably along an inner wall of the ventilation tube and occupies an end position positioned in the ventilation tube. The end position of the insect protection device determines the exact arrangement in the Ventilation pipe. Since the wall according to the type of construction of a building has different width walls, a uniform distance measure can be determined with a fixed position of the insect protection device in the ventilation pipe from the inner wall to the insect protection device. With a fixed position, further components for perfecting the fan in the ventilation pipe can be used without varying the variety of individual components of the same dimensions in different wall thicknesses.

A simple assembly and disassembly with a secure hold of the insect protection device, is achieved by simple and inexpensive means advantageously characterized in that the end position of the insect protection device is a detachable connection, which establishes an operative connection between the inner wall of the vent pipe and an outer surface of the insect protection device. Advantageously, the means for connection produce a positive and / or a positive connection.

Dimensionally stable, the insect protection device proves in the installed state as a one-piece framework in the embodiment of a tubular element which is formed in cross-section circularly adapted to the inner diameter of the vent pipe. In adaptation to the likewise in cross-section circular vent tube, the production of the bore in the wall simplified because it only requires a hole with a suitable drilling tool to create a through hole between the inner wall and the outer wall. In general, tubes preferably have a circular cross section, which represents the optimal design for the most common applications. For use of static elements with increased rigidity, but also come with cross-sections with rectangular, oval and other cross-sections in question.

Due to simple outer circular shape of the insect protection device, which is preferably mounted in the ventilation tube from the interior into the wall, the tubular element can be functionally simple, which has a lasting positive effect on the costs in the production of insect repellent device. It is also essential that the tube element at its first free end has a diameter adapted to the diameter of the opening without further material components for the air passage of the air flow and at its second free end, the tube element is enclosed in cross-section of a grid structure over the entire surface.

A particularly favorable flow of air and a low-pressure formation of the fan with arrangement of the insect protection device are effective in that the grid structure of the insect protection device is inclined at an angle to the pipe element and the ventilation pipe. The resulting flow resistance, which occurs at a meeting of the traversed air in the vent tube results in the lattice structure is reduced by the initially small end face of the lattice structure with angularly continuous increase in area. In addition, decisive for a reduced flow resistance are also the lattice structure forming lattice struts, which are at a distance greater than 3.5 mm, preferably 3.6 mm and rounded in the direction of air flow in the longitudinal direction to the ventilation pipe. In an advantageous embodiment, the lattice struts are circular in cross section. Depending on the flow direction, it is sufficient to position a rounding of the lattice struts on the colliding side of the air flow to the lattice structure.

A simple installation and a secure hold, as well as an equally easy disassembly of the insect protection device to the pipe element results from the fact that in the region of the first free end facing away from the opening lateral surface of the tubular element distributed projections are arranged. The protrusions arranged at the free end of the tubular element build a friction-like resistance only shortly before the end of the complete insertion of the insect protection device into the tubular element on the inner wall, and cause a clamping effect between the ventilation tube and the insect screen. The resulting clamping effect due to frictional engagement is sufficient to keep the insect protection device immovable even when acting air flow in the ventilation pipe and allows easy removal from the vent pipe.

Laying down the insect protection device in the ventilation tube for the end position, a stop is projecting in the region of the first free end facing away from the opening on the lateral surface of the tubular element to the insect protection device, which extends circumferentially to the tubular element with a width. When inserting the insect protection device in the ventilation pipe, the stop abuts with the protruding width at one end of the vent pipe and causes the verschiebge secured end position.

In addition, it has been proven in an advantageous manner that the insect protection device is made in one piece from a dimensionally stable and rot-proof plastic material. In particular, in the case of a tubular element which is an elongate hollow body whose length is generally greater than its diameter, production from a plastic material is to be used with preference. Of course, other materials are possible. Furthermore, contrary to the preferred circular cross section of the tubular element, which exhibits the above advantages, rectangular, oval and other cross sections can also be used.

Also, in a method of the type mentioned, the object is achieved in that the insect protection device is integrally formed from the interior into the ventilation tube and is held in the ventilation tube against displacement.

Further details and advantages of the embodiment will become apparent from the following description of the accompanying drawings, in which an embodiment of an insect protection device is shown for a provided on a wall or a ceiling fan.

Fig. 1

eine perspektivische Darstellung der Insektenschutzvorrichtung von der Seite mit sichtbarer Gitterstruktur,

Fig. 2

eine Explosionsdarstellung der Insektenschutzvorrichtung nach Fig.1 mit einem Lüftungsrohr,

Fig. 3

eine Explosionsdarstellung der Insektenschutzvorrichtung und dem Lüftungsrohr nach Fig. 2 mit einem Lüfter und

Fig. 4

eine Seitenansicht der Wand und des Lüfters in einer Schnittdarstellung, mit geschnittenem Lüftungsrohr und darin lagepositionierten Insektenschutzvorrichtung.

It shows:

Fig. 1

a perspective view of the insect protection device from the side with visible lattice structure,

Fig. 2

an exploded view of the insect repellent device Fig.1 with a ventilation pipe,

Fig. 3

an exploded view of the insect protection device and the ventilation pipe after Fig. 2 with a fan and

Fig. 4

a side view of the wall and the fan in a sectional view, with cut vent pipe and positioned therein insect protection device.

The cut side view with illustration in Fig. 4 shows how a wall-mounted fan 3 for decentralized ventilation and / or ventilation of an interior 7 of a building with a wall 2 of the building having a ventilation pipe 6 is coupled, which in an air duct 5 forming hole 4 the fan 3 from the outside. 9 supplied to the interior 7 of the building with an air flow for air exchange. The fan 3 serves to promote a Zuluftströmung from the outside 9 of the outer wall 10 in the interior 7 of a building and / or an exhaust air flow from the interior 7 of the building to the outside 9 of the outer wall 10th

The fan 3 further comprises an insect protection device 1 in order to protect the interior space 7 from contamination by the outside air, in particular from insects, lint, leaves and the like. The insect protection device 1 is to after Fig. 4 arranged in the fan 3 and the inner wall 8 facing the end of the vent pipe 6.

In the bore 4, the ventilation pipe 6 is first inserted, through which the air can enter. In addition, the ventilation pipe 6 connects the arranged in an interior 7 on an inner wall 8 components of the fan 3 with the outer side 9 on an outer wall 10 having components of the fan 3, for example, not shown weather protection.
With one-piece construction of the insect protection device 1 according to Fig. 1 , are all essential components for protection against insect penetration and attachment in the vent pipe 6 after Fig. 2 contained in a component and can be mounted with a single handling in the fan 3 and also disassembled for the purpose of maintenance and cleaning. In one piece, the insect protection device 1, if it is made of a material uniformly or if it is assembled by forming and / or adhesion of several components prior to assembly in the vent pipe 6 forming a one-piece component. A possible combination of components to be connected could be, for example, a tubular element 14 and a grid structure 18, which can also be produced from different materials or with the same materials having different microstructures.

The insertion or removal of the insect protection device 1 after cleaning preferably takes place from the side of the interior 7 Fig. 4 , By granting easy access to the insect protection device 1 from the interior 7 of the building, cleaning of the insect protection device 1 is made possible even in buildings difficult to access from the outside, for example multi-storey buildings. For quick and easy handling of assembly or disassembly of the insect protection device 1, the vent pipe 6 in the direction of arrow after Fig. 2 slidably guided along an inner wall 11 of the ventilation tube 6 and assumes an end position 12 positioned in the ventilation tube 6 Fig. 4 one. The end position 12 of the insect protection device 1 determines the exact arrangement in the ventilation pipe 6. Also off Fig. 4 It can be seen that even with different walls 2 of the building a uniform distance measure with a fixed position of the insect protection device 1 in the ventilation pipe 6 from the inner wall 8 to the insect protection device 1 is. With a fixed position of the insect protection device 1 can be used - not shown - and other components for perfecting the fan 3 in the ventilation pipe 6 without generating costly variant variety of individual components of a ventilation system with the same dimensions in different wall thicknesses.

An initial installation of the insect protection device 1 can before installation of the ventilation pipe 6 in the wall 2 with insertion into the ventilation pipe 6 after Fig. 2 respectively. An installation with the ventilation pipe 6 of the insect protection device 1 already used in the wall 2 is also possible. Disassembled, the insect protection device 1 in the installed state after Fig. 4 , It is the insect protection device 1 located in the end position 12 is releasably connected to the ventilation pipe 6. The inner wall 8 of the ventilation pipe 6 and an outer surface 13 of the insect protection device 1 come into operative connection.

After the FIGS. 1 to 3 the insect protection device 1 is formed as a one-piece framework in an embodiment of the tubular element 14, which is adapted in cross-section to the dimensional stability of the circular inner diameter of the vent tube 6. In adaptation to the likewise circular in cross-section ventilation pipe 6, the production of the bore 4 in the wall 2 simplified after Fig. 4 because there is only one hole 4 with a suitable drilling tool needed to create a through hole between the inner wall 8 and the outer wall 10.

Clarified after the FIGS. 1 to 2 the circular shape of the insect protection device 1. The tube member 14 has at its first free end 15 a without additional material components to the diameter adapted opening 16 for the passage of air through the air. At its second free end 17, the tubular element 14 is enclosed in cross-section by the mesh-like lattice structure 18 over its entire surface. The grid structure 18 has rectangular air openings. But there are also square, honeycomb, circular or other opening forms possible.

Furthermore, according to the invention, a low-pressure formation of the fan 3 with arrangement of the insect protection device 1 is achieved. For this, the lattice structure 18 of the insect protection device 1 follows FIGS. 1 to 4 at an angle 19 inclined to the tubular element 14 and the vent pipe 6. The resulting flow resistance, which results in a meeting of the air flow in the vent pipe 6 on the grid structure 18 is, by the initially small end face 24 of the grid structure 18 after Fig. 1 reduced angularly continuous increase in area. Continue to Fig. 1 In addition, decisive for a reduced flow resistance are also the lattice structure 18 forming lattice struts 20, which extend at a distance greater than 3.5 mm, preferably 3.6 mm and in the direction of air flow and in the longitudinal direction to the vent pipe 6 are rounded. In an advantageous embodiment, the lattice struts 20 are circular in cross section. Depending on the flow direction, it is sufficient to position a rounding of the lattice struts 20 on the colliding side of the air flow to the lattice structure 18.

The insect protection device 1 can after Fig. 1 easy to install with the help of fixing aids for a secure hold. In addition, the existing mounting aid also allows easy disassembly of the insect screen 1 to the tubular element 14. For this purpose, in the region of the first free end 15 on the opening 16 facing away from lateral surface 13 of the tubular element 14 are arranged distributed raised projections 21. Preferably, the Projections 21, ribs or nipples formed elastically and have to simplify the assembly in the vent pipe 6 an inlet slope 25. The arranged at the free end 15 of the Rohelements 14 projections 21, build only shortly before the end of the complete insertion of the insect protection device 1 in the tubular element 14 after Fig. 4 on the inner wall 11 a frictional resistance and cause a clamping effect between the vent pipe 6 and insect protection device 1. The resulting clamping effect by frictional engagement is sufficient to keep the insect protection device 1 even with acting air flow in the ventilation tube 6 immovable and swirl-free and allows easy Pulling out of the ventilation pipe 6.

At the outer end 15 of the tubular element 14 of the insect protection device 1 is after Fig. 1 a stop 22 is provided which determines the end position in the installed state after insertion of the insect protection device 1 in the ventilation pipe 6. The stopper 22 is projecting on the first free end 15 on the opening 16 facing away from lateral surface 13 of the tubular element 14 on the insect protection device 1 and extends circumferentially to the tubular element 14 with a width 23 which is suitably designed, the insect protection device 1 completely positioned against further Keep moving. When sliding insertion of the insect protection device 1 in the vent pipe 6, abuts the stopper 22 with the projecting width 23 at one end of the vent pipe 6 and causes the non-displaceable, immovable end position 12 after Fig. 4 ,

Like from the FIGS. 1 to 4 it can be seen, the insect protection device 1 is integrally formed. In the tubular element 14, which is an elongated hollow body whose length is usually greater than its diameter, a preparation of a dimensionally stable and rot-proof plastic material is preferably used. Even the lattice structure 18 can be manufactured together with the tubular element 14 in an injection molding process.

LIST OF REFERENCE NUMBERS

1

Insect protection device

2

wall

3

Fan

4

drilling

5

ventilation duct

6

ventilation pipe

7

inner space

8th

inner wall

9

outside

10

outer wall

11

inner wall

12

end position

13

lateral surface

14

tube element

15

free end

16

opening

17

free end

18

lattice structure

19

angle

20

lattice strut

21

head Start

22

attack

23

width

24

face

25

run-in slope

Claims (9)

Insect protection device (1) for a fan (3) arranged in or on a wall (2), a building wall or a ceiling, having a bore (4) through the wall (2) and containing an air duct (5) for the passage of air through it Air flow for exhaust air and / or supply air forms that in the bore (4) a vent pipe (6) is inserted, which in an interior (7) on an inner wall (8) arranged components of the fan (3) with the outside ( 9) connects to an outer wall (10) having components of the fan (3),
characterized,
in that the insect protection device (1) can be slidably inserted from the side of the interior (7) into the ventilation pipe (6) along an inner wall (11) of the ventilation pipe (6) and in the ventilation pipe (6) occupies a positioned end position (12). Insect protection device (1) according to claim 1,
characterized,
in that the end position (12) of the insect protection device (1) is a releasable connection between the inner wall (8) of the ventilation tube (6) and an outer lateral surface (13) of the insect protection device (1), the connection being achieved by positive and / or non-positive connection becomes. Insect protection device (1) according to one or more of the preceding claims,
characterized,
in that the insect protection device (1) is a tubular element (14) which, in cross section, has the shape of a circular cylinder adapted to the inner diameter of the ventilation tube (6). Insect protection device (1) according to claim 3,
characterized,
that the tubular element (14) at its first free end (15) has an adapted to the diameter of opening (16) for the air passage of the air flow, and at its second free end (17) the pipe element (14) in cross-section of a lattice structure (18) is completely enclosed. Insect protection device (1) according to claim 3,
characterized,
in that the lattice structure (18) slopes at an angle (19) to the tube element (14) and to the ventilation tube (6), the lattice struts (20) forming the lattice structure (18) being at a distance greater than 3.5 mm, preferably 3.6 mm run and in the direction of air flow and in the longitudinal direction to the vent pipe (6) are rounded. Insect protection device (1) according to claim 4,
characterized,
that in the region of the first free end (15) on the opening (16) facing away from lateral surface (13) of the tubular element (14) split raised projections (21) are arranged, which almost at the end of the complete insertion of the insect protection device (1) with the inner wall (11) build a frictional resistance and achieve a clamping effect between the vent pipe (6) and insect protection device (1). Insect protection device (1) according to claim 4,
characterized,
that in the region of the first free end (15) on the opening (16) facing away from the lateral surface (13) of the tubular element (14) of the insect protection device (1) projecting a stop (22) is arranged, which is circumferentially to the tubular element (14) with a Width (23) extends, wherein the stop (22) strikes with insertion of the insect protection device (1) in the vent pipe (6) at one end of the vent pipe (6) and the end position (12) causes. Insect protection device (1) according to claim 4,
characterized,
that the insect protection device (1) is preferably made of a plastic material. Method for mounting an insect protection device (1) in a ventilation pipe (6) for a fan (3) arranged in a wall (2),
characterized,
that the insect protection device (1) from the interior (7) integrally formed in the ventilation tube (6) is inserted and is held in the ventilation tube (6) against displacement.

Images