DK2626644T3

DK2626644T3 - Ventilation component comprising a duct-shaped housing with surrounding house walls

Info

Publication number: DK2626644T3
Application number: DK12159323.0T
Authority: DK
Inventors: Jochen Hampel; Thomas Wolters
Original assignee: Trox Gmbh Geb
Priority date: 2012-02-07
Filing date: 2012-03-13
Publication date: 2019-01-21
Also published as: TR201820381T4; EP2626644B1; HUE040635T2; PL2626644T3; EP2626644A1; ES2703506T3; PT2626644T

Description

Description [0001] The invention relates to a ventilation component, comprising a channel-shaped housing, with housing walls arranged such as to surround it, wherein at least one ventilator, in particular a radial ventilator, and a panel, upstream of the ventilator seen in the direction of flow, are arranged in the housing, wherein the panel comprises an opening for the passage of the flowing medium to the suction region of the ventilator.

[0002] A radial ventilator comprises an impeller which is driven by a drive motor. The impeller usually comprises a cover disk and a carrier disk, between which the impeller blades are arranged. In a radial ventilator, the air is usually suctioned in parallel to the drive axis of the radial ventilator, deflected through 90Q by the rotation of the radial impeller, and blown out radially. The radial ventilators used in this sector do not comprise a housing arranged around the impeller.

[0003] In a known ventilation component, for the purpose of sound-damping, a silencer assembly with a plurality of silencer elements arranged next to one another is located on the inflow side. Two adjacent silencer elements form between them in each case a flow channel. The silencer elements work in accordance with the absorption principle, or the absorption resonance principle, or the resonance principle. The silencer elements are in contact with their upper sides and their lower sides with the inner side of a silencer frame or of the housing. As a result, the acoustic energy can only penetrate into the silencer element concerned by way of the two side surfaces aligned parallel to the direction of flow.

[0004] With a shorter distance interval between the outflow side of the silencer assembly and the inflow side of the panel, the suction capacity of the ventilator is reduced. As a result, in a known ventilation component a silencer assembly is usually mounted in such a way that the distance interval between the panel and the outflow side of the silencer assembly amounts to at least half the diameter of the impeller. This, however, on the one hand incurs a substantial housing length and, on the other, a greater acoustic power, which is not desirable.

[0005] From US-PS 5,326,317, a ventilator is known for installation in a false ceiling. FR 2 505 416 describes a fan for conveying dust-laden air, such as tunnel air. In US 2011/0002775 A1 a ventilator is described for installation in a false ceiling. GB 2 362 926 A disclosed a ventilation component with the features of the preamble to claim 1.

[0006] The object of the invention is to avoid the disadvantages referred to heretofore and to 1 provide a ventilation component which exhibits a reduced acoustic power.

[0007] This object is solved by a ventilation component with the features of claim 1. Preferred embodiments are defined in the dependent claims.

[0008] By means of the configuration according to the invention, the [0009] sound-damping in the channel-shaped housing is improved. Moreover, under certain circumstances, it is also possible to achieve an improved soundproofing.

[0010] The sound-damping and/or soundproofing material can be, for example, an absorption material or another suitable material. The material can extend over the complete length or only over a part region of the housing walls arranged upstream of the panel, seen in the direction of flow.

[0011] In the flow channel, preferably arranged in the middle, the flow is already accelerated upstream of the panel up to the speed level in the region of the opening provided in the panel (panel flow). If the cross-section of the flow channel is reduced, seen in the direction of flow, for example continuously, the flow in the flow channel will be continuously accelerated. This allows the ventilator to work more effectively, such that the degree of efficiency of the ventilator is increased. In addition to this, the soundproofing and/or sounddamping material can be installed with a very small distance interval, or even no interval at all, from the inflow side of the panel. In the latter case, the outflow side of the soundproofing and/or sound-damping material lies on the inflow side of the panel. As a result, the acoustic power is reduced. The ventilation component according to the invention incurs a lower pressure loss in comparison with known ventilation components, while having at least the same soundproofing and/or sound-damping capacity.

[0012] At least one soundproofing and/or sound-damping material can comprise at least one inner surface, delimiting the flow channel, and an outer surface, facing towards the inner surface of the housing and/or the adjacent soundproofing and/or sound-damping material, and the outer surface of this soundproofing and/or sound-damping material can be in contact on the inner side of the housing and/or, directly or indirectly by way of another component, such as an intermediate wall, with the adjacent soundproofing and/or sounddamping material, or, with the formation of a gap s, can be located at a distance from the inner side of the housing and/or from the adjacent soundproofing and/or sound-damping material or from the other component.

[0013] The downstream end of at least one soundproofing and/or sound-damping material is in direct contact on the inflow side of the panel, or is located at a distance interval from the inflow side of the panel, with the formation of a gap s. With a direct arrangement, the 2 ventilation component has a particularly short housing length, such that the ventilation component according to the invention can still be used even with restricted spatial circumstances.

[0014] If provision is made for a gap, the width of the gap a can amount to up to 40% of the material thickness of the element in the region of the outflow side, i.e. at the outflow side end of the flow channel.

[0015] The cross-section of at least one soundproofing and/or sound-damping material can be configured as a circumferential single-piece element. Such an element is pushed into the housing through the free end of the housing.

[0016] It is of course also possible for the cross-section of at least one soundproofing and/or sound-damping material to consist of at least two, and preferably of four, part elements, if, for example, the housing exhibits a rectangular cross-section, the individual elements can be arranged on the edge side angled obliquely by 45Q. In the installed state, the four part elements form a circumferential closed element, similar to a ring. Other embodiments are, of course, possible. So, for example, two part elements can be used, which have the shape of an “L” or a “U”. Elements which are adjacent to one another can of course also abut one another in obtuse angle contact.

[0017] The width of the gap s can amount to between 1/10 and 1/5 of the material thickness of an element in the region of the outflow side, i.e. at the outflow end of the flow channel. This allows for conventional silencers to be adapted to each housing dimension and/or to all conventional panel openings. It is also possible for a further improvement of the sounddamping to be achieved by resonance effects. If the material thickness of the silencer is, for example, 200 mm, the width of the gap s is preferably between 20 mm and 40 mm.

[0018] At least one element or at least one part element can contain absorption material in the region of the inner surface. It is also entirely possible, however, for the element or the part element to consist completely of absorption material.

[0019] At least two opposing inner surfaces, forming the flow channel between them, can be aligned parallel.

[0020] The cross-section of at least one flow channel is reduced, seen in the direction of flow, in particular continuously.

[0021] The cross-section of at least one flow channel can be configured as rectangular, at least in the region of the inflow side, preferably over the whole length between the inflow side and the outflow side.

[0022] As an alternative, the cross-section of at least one flow channel can be configured as 3 rectangular, at least in the region of the outflow side, and preferably over the entire length between the inflow side and the outflow side.

[0023] It is, however, also entirely possible for the cross-section of at least one flow channel, seen in the direction of flow, to transition in the region of the inflow side into a round cross-section in the region of the outflow side.

[0024] Preferably, provided between the outflow side of the panel and the ventilator is an inlet nozzle, running into a funnel shape, in particular seen in the direction of flow.

[0025] In a preferred exemplary embodiment of the invention, the narrowest point of the cross-section of at least one flow channel in the region of the outflow side is not smaller than the intake diameter of the inlet nozzle.

[0026] It is also entirely possible for the narrowest point of the cross-section of at least one flow channel in the region of the outflow side to be not smaller than the diameter of the opening in the panel.

[0027] Preferably, the edge of the narrowest point of the cross-section of at least one flow channel, in the region of the outflow side, connects directly to the edge of the opening in the panel or the intake diameter of the inlet nozzle, and, in particular, is in contact on the edge of the opening.

[0028] The soundproofing and/or sound-damping material can exhibit, on the inflow side, a round or oblique angled transition (transition region) to the inner surface, in order to reduce the pressure loss still further.

[0029] It is advantageous if the inflow side edge of the opening in the panel is configured as rounded or obliquely angled.

[0040] It is advantageous if, in the housing, at least two arrangements, arranged next to one another and/or above one another, are provided, in each case comprising a ventilator and soundproofing and/or sound-damping material, wherein each soundproofing and/or sounddamping material is configured as circumferential, with the formation of at least one flow channel, in particular central, and wherein each soundproofing and/or sound-damping material is provided in the region of the housing walls upstream of the panel, seen in the direction of flow.

[0041] Such an embodiment can be arranged inside a climate-control system in such a way that a common inlet and a common outlet are provided. The arrangements are arranged between the inlet and the outlet in the housing in such a way that the air flowing into the housing is “distributed” onto the different arrangements.

[0032] In this situation, a common single-piece element, consisting of soundproofing and/or 4 sound-damping material, configured as circumferential, can be allocated to all the ventilators. In this case, the single-piece element comprises several flow channels.

[0033] It is also possible, however, for each ventilator to be allocated a separate singlepiece element, configured as circumferential, and consisting of soundproofing and/or sounddamping material.

[0034] Between two adjacent single-piece elements at least one intermediate wall can be provided, preferably in contact with the inner side of at least one housing wall. Each intermediate wall subdivides the housing into two sections. Each section serves to accommodate one single-piece element. In addition, the intermediate wall increases the stability of the housing.

[0035] The exemplary embodiments of the invention represented in the drawings are explained in greater detail. The drawings show:

Fig. 1 A side view of a ventilation component according to the invention,

Fig. 2 a view, seen in the direction of flow, into the interior of a first exemplary embodiment of a ventilation component according to the invention,

Fig, 3 a view, seen in the direction of flow, into the interior of a second exemplary embodiment of a ventilation component according to the invention,

Fig. 4 a view, seen in the direction of flow, into the interior of a third exemplary embodiment of a ventilation component according to the invention,

Fig. 5 a view, seen in the direction of flow, into the interior of a fourth exemplary embodiment of a ventilation component according to the invention,

Fig. 6 a view, seen in the direction of flow, into the interior of a fifth exemplary embodiment of a ventilation component according to the invention, with a circumferential gap s.

Fig. 7 a section through the object according to Fig. 2,

Fig. 8 a section through the object according to Fig. 3 5

Fig. 9 a section through one of the objects according to Fig. 4 or 5.

Fig. 10 the detail “X” in Fig. 9 with the gap s.

Fig. 11 the detail “X” in Fig. 9 without the gap s.

Fig. 12 the detail “Z” of an exemplary embodiment according to Fig. 9 with a gap a,

Fig. 13 a ventilation component with a total of four ventilators (two ventilators arranged above one another and two arranged next to one another), wherein, assigned to all the ventilators, is a common single-piece element, configured as circumferential and consisting of soundproofing and/or sound-damping material,

Fig. 14 an alternative embodiment of the object according to Fig. 13, wherein a separate single-piece element, configured as circumferential and consisting of soundproofing and/or sound-damping material, is assigned to each ventilator, and

Fig. 15 an alternative embodiment of the object according to Fig. 14.

[0036] In all the figures concordant reference numbers are used for components which are the same or of the same type.

[0037] Represented in Figure 1 is a side view of a ventilation component according to the invention, which comprises a rectangular channel-shaped housing with four circumferential housing walls 1. Provided in the ventilation component is a ventilator 2, which is driven by a motor 3. Arranged upstream of the ventilator 2, seen in the direction of flow 4, is a panel 5. [0038] The ventilator 2 and the motor 3 are mounted on the under side on a base 16, which is secured by means of securing elements 19, such as screws, to the inner side of the housing walls 1.

[0039] In the exemplary embodiments shown, an inlet nozzle 12 is arranged between the ventilator 2 and the panel 5. The outer edge of the inlet nozzle 12 is sealed against the panel 5 by a seal, not shown. The panel 5 exhibits an opening 6 for the passage of the flowing medium through the inlet nozzle 12 to the suction region of the ventilator 2.

[0040] As can be seen, for example from Fig. 1, the panel 5 is secured to the base 16 by means of two support elements 17, configured as approximately triangular in shape. 6

Located on each side of the inlet nozzle 12 is a support element 17. The lower edge region 18 and the edge region 13, in contact with the panel 5, of each support element 17 are configured with angled edges.

[0041] As can be seen from the drawings, the flow cross-section of the inlet nozzle 12 tapers in the direction of flow 4 in the form of a funnel. In the exemplary embodiment shown, the inlet nozzle 12 comprises two circumferential regions 14 and 15, arranged behind one another in the direction of flow 4, which differ from one another in their radius of curvature. [0042] Seen in the direction of flow 4, upstream of the panel 5 is a soundproofing and/or sound-damping material 7 for soundproofing and/or sound-damping. The soundproofing and/or sound-damping material 7 can be made, for example, of rock wool. The surface of the rock wool is preferably laminated with a glass silk fabric, in order to prevent an undesirable detachment of rock wool particles. On the outside, the soundproofing and/or sound-damping material 7 comprises, for example, a perforated plate.

[0043] In the exemplary embodiments according to Figs. 1 to 11, the soundproofing and/or sound-damping material 7 is in direct contact with the inflow side of the panel 5. In the exemplary embodiments shown, the soundproofing and/or sound-damping material 7 leaves a middle flow channel 8 free. The soundproofing and/or sound-damping material 7 extends over close to the complete length of the housing walls 1, which are upstream of the panel 5, seen in the direction of flow 4.

[0044] The inflow side A of the soundproofing and/or sound-damping material 7 is understood to be the end which faces against the direction of flow 4. The outflow side is the end which is in contact with the panel 5, seen in the direction of flow 4.

[0045] In the exemplary embodiment according to Fig. 4, the cross-section of the soundproofing and/or sound-damping material 7 is configured as a circumferential singlepiece element.

[0046] As can be seen from Fig. 1, provided in the housing wall 1, in the front in this figure, are two cut-out openings, which can be closed by doors, not shown. The ventilator 2 and the sound-damping material 7 are accessible from the outside through these cut-out openings. [0047] Other exemplary embodiments are represented in Figures 2 and 3 and 5 and 6. Here the cross-section of the soundproofing and/or sound-damping material 7 is formed from four part elements.

[0048] In the exemplary embodiments according to Figures 2 and 3, the opposing longitudinal edges of each part element are inclined at a 45Q angle, such that, in the installed state, the part elements form a circumferential closed element which is configured as similar 7 to a ring.

[0049] In the exemplary embodiments according to Figures 5 and 6, four part elements are again provided for. Adjacent part elements, however, abut one another in an obtuse contact. [0050] In the exemplary embodiments according to Figures 4 to 6, as also represented in Figure 9, the two opposing inner surfaces 9 in each case, forming between them the flow channel 8, are aligned in parallel. Accordingly, the cross-section of the flow channel 8 is constant over its entire length, with the exception of the rounded transition region 11 in the region of the inflow side A. In the exemplary embodiments according to Figures 4 and 5, the soundproofing and/or sound-damping material 7 is in direct contact with its outer edges 10 with the inner side of the housing walls 1.

[0051] In the exemplary embodiments according to Figures 2 and 3, as also shown in Figures 7 and 8, the cross-section of the flow channel 8 is continuous, with the exception of the rounded transition region 11 in the region of the inflow side A, seen in the direction of flow 4.

[0052] In all the exemplary embodiments, the soundproofing and/or sound-damping material 7 exhibits, in the region of the inflow side A, a rounded transition region 11, in order to reduce pressure losses.

[0053] As can be seen from Figures 2 to 6 and 12, the narrowest point of the cross-section of the flow channel 8 is larger in the region of the outflow side A than the inlet diameter 16 of the inlet nozzle 12.

[0054] In the exemplary embodiments according to Figures 3 and 4, the cross-section of the flow channel 8 is configured in each case as rectangular in the region of the inflow side A and the outflow side.

[0055] In the exemplary embodiment according to Fig. 2, the cross-section of the flow channel 8, seen in the direction of flow 4, transitions from a rectangular cross-section in the region of the inflow side A into a round cross-section in the region of the outflow side.

[0056] Represented in Figures 6 and 10 is a variant in which the outer surface 10 of the soundproofing and/or sound-damping material 7 is spaced at a distance from the inner side of the adjacent housing wall 1, with the formation of a gap s.

[0057] Represented in Figure 12 is an exemplary embodiment in which the soundproofing and/or sound-damping material 7 is not directly in contact with the inflow side of the panel 5. Rather, the soundproofing and/or sound-damping material 7 is spaced at a distance from the inflow side of the panel by a gap a. The panel 5 extends over the complete cross-section of the housing. 8 [0058] As can be seen from Fig. 12, the panel 5 is in sealing contact with its outflow side with the outer circumferential edge of the inlet nozzle 12. The inlet nozzle 12 can, for example, be screwed, riveted, or connected in a similar manner at its free end to panel 5. [0059] It is of course also possible for the inlet nozzle 12 and the panel 5 to be formed as one piece. In this case, the edge of the inlet nozzle 12 would extend as far as the housing walls 1.

[0060] Fig. 12 again shows that the narrowest point of the cross-section of the flow channel 8 in the region of the outflow side is larger than the inlet diameter 16 of the inlet nozzle 12. [0061] Represented in Figs. 13 to 15 is a ventilation component which comprises a channelshaped housing with circumferentially arranged housing walls 1. Provided in the housing are four ventilators 2, arranged, seen in the direction of flow 4, at the same height, next to one another, and above one another. For this purpose, four openings 6 are provided in the panel 5 for the passage of the gas to the suction region of the respective ventilator 2. The direction of rotation of the four ventilators 2 is the same.

[0062] In the exemplary embodiment according to Fig. 13, a common soundproofing and/or sound-damping material 7, as a single-piece element, is allocated to all four ventilators 2. The soundproofing and/or sound-damping material 7 therefore forms four flow channels 8. The soundproofing and/or sound-damping material 7 is delimited with its four sides directly at the housing walls 1.

[0063] In the exemplary embodiments according to Figs. 14 and 15, allocated to each ventilator 2 is its own circumferential element, and therefore separate, configured as one piece, made of soundproofing and/or sound-damping material 7. Each soundproofing and/or sound-damping material 7 forms a flow channel 8.

[0064] In the exemplary embodiment according to Fig. 14, the housing comprises on its inside two intermediate walls 20, arranged at right angles to one another and in contact with the inner sides of opposing housing walls 1, which divide the housing into four regions. Each region serves to accommodate a soundproofing and/or sound-damping material (7), which is configured as a circumferential single-piece element.

[0065] In the exemplary embodiments according to Figs. 14 and 15, each soundproofing and/or sound-damping material 7 are delimited directly with two of its four sides at the housing walls 1.

[0066] The two other sides of each element, in the exemplary embodiment according to Fig. 14, are in contact with the respective intermediate wall 20.

[0067] Since in the exemplary embodiment according to Fig. 15 no intermediate walls 20 are 9 provided for, each element is in contact with its two other sides in each case with a side of an adjacent element. 10

Claims

A ventilation component comprising a duct-shaped housing with housing walls (11) arranged around it, wherein at least one fan (2), in particular a radial fan (2), is provided in the housing and wherein a circumferential, sound-insulating or sound-damping material (7) is provided. preferably directly on the housing walls, to insulate and / or muffle in the area of the housing walls (1) upstream of the fan (2) seen in the flow direction (4), leaving at least one flow channel (8), especially in the middle, characterized in that the fan (2) seen in the flow direction also in the housing is arranged an aperture (5) comprising an opening (6) for passage of the flowing medium to the suction area of the fan (2), that the discharge end of at least one sound-insulating and / or sound-dampening material ( 7) is in contact with the inflow side of the aperture (5) or forms a gap (a) spaced apart from the inflow side of the aperture (5) and that the cross-section of the at least one size the sewer channel (8) decreases, preferably continuously, seen in the flow direction (4).

Ventilation component according to the preceding claim, characterized in that at least one sound insulating and / or sound attenuating material (7) comprises at least one inner surface (9) defining the flow channel (8) and an outer surface (10) facing the housing. the inside and / or the adjacent sound insulating and / or sound attenuating material (7) and that the outer surface (10) of the sound insulating and / or sound attenuating material (7) is in contact with the inside of the housing and / or with the adjacent sound insulating and / or sound attenuating material (7), or forming a slot s spaced apart from the inside of the housing and / or from the adjacent sound insulating and / or sound attenuating material (7).

Ventilation component according to one of the preceding claims, characterized in that the cross-section of the at least one sound-insulating and / or sound-dampening material (7) is formed as a one-piece circumferential element.

Ventilation component according to one of claims 1 to 3, characterized in that the cross-section of the at least one sound-insulating and / or sound-dampening material (7) consists of at least two, preferably four, sub-elements.

Ventilation component according to one of claims 2 to 4, characterized in that the width of the gap s is between about 1/10 and 1/5 of the element thickness.

Ventilation component according to one of the preceding claims 3 to 5, characterized in that at least one element or at least one part element in the area of the inner surface (9) contains absorbent material.

Ventilation component according to one of the preceding claims, characterized in that at least two opposing inner surfaces (9) forming the flow channel (8) are directed in parallel.

Ventilation component according to one of the preceding claims, characterized in that the cross-section of at least one flow channel (8) is formed at least in the square of the inflow side A, preferably over the entire length between the inflow side A and the outflow side.

Ventilation component according to one of claims 1 to 7, characterized in that the cross-section of at least one flow channel (8) is formed at least at least in the region of the outflow side, preferably over the entire length between the inflow side A and the outflow side.

Ventilation component according to one of the preceding claims, characterized in that the cross-section of at least one flow channel (8) seen in the flow direction (4) goes from a square cross-section in the area of the inflow side A to a circular cross-section in the area of the outflow side.

Ventilation component according to one of the preceding claims, characterized in that between the discharge side of the aperture (5) and the fan (2) there is provided an inlet nozzle (12) which extends funnel-shaped, especially in the flow direction (4).

Ventilation component according to the preceding claim, characterized in that the narrowest location of at least one cross-section of the flow channel (8) in the area of the discharge side is not less than the inlet diameter (16) of the inlet nozzle (12).

Ventilation component according to one of the preceding claims, characterized in that the narrowest location of at least one cross-section of the flow channel (8) in the area of the discharge side is not less than the diameter of the aperture (6) in the aperture (5).

Ventilation component according to claim 12 or 13, characterized in that the edge of the narrowest point of at least one cross-section of the flow channel (8) in the discharge side area is directly adjacent to the edge of the opening (6) in the aperture (5) or the inlet nozzle (12). inlet diameter (16), and in particular abuts against it.

Ventilation component according to one of the preceding claims, characterized in that the sound insulating and / or sound attenuating material (7) on the inflow side comprises a circular or oblique transition to the inner surface (9).

Ventilation component according to one of the preceding claims, characterized in that the rim of the opening (6) on the inlet side of the aperture (5) is formed rounded or oblique.

Ventilation component according to one of the preceding claims, characterized in that at least two arrangements arranged side by side and / or above each other, in each case comprising a fan (2) and sound insulating and / or providing sound attenuating material in which the sound insulating and / or sound attenuating material (7) is formed circumferentially with the formation of at least one flow channel (8), especially in the middle, and wherein each sound insulating and / or sound attenuating material (7) is provided in the housing walls (1) seen upstream of the aperture (5) in the direction of flow (4).

Ventilation component according to one of the preceding claims insofar as it is dependent on claim 3, characterized in that at least one intermediate wall (20) is provided between two adjacent individual elements, preferably in contact with the inside of at least one housing wall (1).