Fastening device, method for mounting it to a support arm device, and extraction apparatus

Abstract

The invention relates to a fastening device, a method for mounting it to a support arm device and an extraction apparatus. The fastening device (1) is configured to be mounted to an elongated profile element (9) of a support arm device (5) having a cross-sectional profile shape (8), the fastening device (1) is configured to hold a tube member (3) by means of a holding element (7) configured to be coupled to the fastening device (1) and the tube member (3). The fastening device (1) comprises a contour surface (11, CS) at least partially corresponding to said cross-sectional profile shape (8), wherein the contour surface (11, CS) is configured for engaging and holding the fastening device (1) to the elongated profile element (9) when the fastening device (1) is mounted to the elongated profile element (9).

Description

TECHNICAL FIELD

[0001] The present invention relates to a fastening device configured to be mounted to a support arm arrangement and for holding a tube member. The present invention also relates to an extraction apparatus using such a fastening device. The present invention also relates to a method of mounting a fastening device and / or a tube member to a support arm arrangement.

[0002] The present invention can relate to different types of extraction apparatuses and support arm arrangements to which various types of tube members can be mounted for extraction of gaseous fluids.

[0003] The present invention can relate to industrial manufacturing extraction apparatuses and / or ventilation arrangements designed for capturing gases, or the present invention can relate to industries using support arm arrangements configured to hold tube members adapted for capturing gaseous fluids such as airborne particulate matter, odours, fumes, welding fumes, dust, vapour or other gaseous fluids.

[0004] The present invention can relate to industrially produced fastening devices configured to be mounted to support arm arrangements of extraction apparatuses. BACKGROUND

[0005] Current extraction apparatuses comprising tube members configured to extract gaseous fluids can lack sufficient measures for safely and quickly assembling the tube members to the support arm arrangements and for safely and quickly disassembling the tube members from the support arm arrangements.

[0006] In food production and food handling processes and productions, extraction apparatuses are used to provide sufficient air distribution and proper handling of airborne particulate matter, odours, etc. The components of the extraction apparatuses, such as fastening devices, tube members, elongated profile elements, etc., are regularly cleaned to prevent the components from becoming contaminated, thereby achieving high hygiene standards in relation to the extraction apparatuses and the fastening devices. Today, such cleaning can involve time consumption for assembling the fastening devices to the support arm arrangements and disassembling the fastening devices from the support arm arrangements, and can involve unnecessary production interruptions and costs.

[0007] Some industries manufacturing extraction apparatuses use welding as a way of connecting the fastening devices to the support arm arrangements. However, the welded joints are difficult to clean and contaminants can be trapped in the uneven surfaces and deep pits of the welded joints.

[0008] Extraction apparatuses can also be used in other processes to provide sufficient air distribution and proper handling of airborne particulate matter, odours, etc.

[0009] The Swedish patent application SE 1850702-0 (Fumex AB) discloses a support arm arrangement of a gas extraction equipment, which gas extraction equipment utilizes a fastening device and elastic holding elements to hold a tube member to the support arm arrangement. The free end of each elastic holding element is coupled to the fastening device and is stretched back around the tube member to the fastening device. The fastening device and extraction equipment shown in SE 1850702-0 work well, but there is still room for research and development. SUMMARY

[0010] There is an object to provide a fastening device configured to be mounted to a support arm arrangement, which fastening device facilitates simple, safe and rigid mounting of a tube member to the support arm arrangement.

[0011] There is an object to provide a fastening device, which fastening device facilitates quick assembly of a tube member to a support arm arrangement / quick disassembly of a tube member from a support arm arrangement in a cost-effective manner, which allows maintenance or cleaning without interruption of production and with minimal downtime.

[0012] There is an object to provide a rigid assembly of a tube member to a support arm arrangement to prevent the tube member from unintentionally sliding along the elongated profile element during use of the extraction equipment.

[0013] There is an object to provide an ergonomic and / or safe mounting of a fastening device to a support arm arrangement.

[0014] There is an object to eliminate the risk of creating sparks between the support arm arrangement and the fastening device during use of the extraction equipment.

[0015] There is an object to provide an improved fastening device and extraction equipment, which is easy and safe to operate to contribute to an optimal ergonomic environment.

[0016] There is an object to provide a fastening device, which fastening device is configured to hold a tube member, which tube member is configured for capturing gases, such as airborne particulate, odours, fumes, welding fumes, dust, vapour or other gaseous fluids.

[0017] There is an object to provide an improved fastening device and extraction equipment to overcome the final deficiencies of the prior art.

[0018] This object or at least one of the objects described has been solved by a fastening device configured to be mounted to an elongated profile element of a support arm device having a cross-sectional profile shape, the fastening device being configured to hold a tube member by means of a holding element configured to be coupled to the fastening device and the tube member. The fastening device comprises a profile surface having a profile corresponding at least partially to the cross-sectional profile shape of the elongated profile element, wherein the profile surface is configured for engaging and holding the fastening device to the elongated profile element when the fastening device is mounted to the elongated profile element.

[0019] In this way, a self-holding fastening device is provided which is configured to be held to the elongated profile element, thereby allowing the tube member to be mounted to the support arm device ergonomically and / or safely.

[0020] In this way, a fastening device is provided which is configured for quickly and firmly mounting the tube member to the support arm device and for rigidly holding the tube member to the support arm device.

[0021] In this way, a fastening device is provided which facilitates the quick assembly of the tube member to the support arm device / the quick disassembly of the tube member from the support arm device, thereby allowing the support arm device to be maintained or cleaned without interrupting production and with minimal downtime.

[0022] In this way, it is achieved that the operator can mount / dismount the tube member to the support arm device with one hand, to achieve a simple and safe coupling.

[0023] Alternatively, the profile surface exhibits a first curvature having a first radius when the fastening device is in an undeformed state.

[0024] Alternatively, the elongated profile element of the support arm device exhibits in cross-section a second curvature having a second radius which is greater than the first radius.

[0025] Alternatively, the profile surface has a shape configured to grip around the support arm device and / or has a shape configured to enclose the cross-sectional profile shape of the support arm device.

[0026] In this way, it is possible to use hollow elongated profile elements which constitute structural parts of the support arm device.

[0027] In this way, a light and rigid support arm is provided which has a cavity which is hermetically sealed.

[0028] The hollow elongated profile element does not have to be machined with any hole or through hole for screwing a fastening device, such as a tube holding bracket, to the hollow elongated profile element, which hole or through hole would reach the cavity of the profile element and involve the risk of contamination of the cavity.

[0029] It is of great importance that the cavity of the hollow elongated profile element is hermetically closed, otherwise contaminants will enter the cavity and the contaminants are difficult to clean.

[0030] By providing a hollow elongated profile element, a light and high-strength elongated profile element is achieved that resists bending deformation.

[0031] In this way an extraction device is achieved that facilitates cost-effective maintenance and service.

[0032] The present invention facilitates the use of a hermetically sealed hollow elongated profile element that has high strength and is light in weight, while the hollow elongated profile element can be used in a clean environment and facilitates simple and cost-effective installation and disassembly of the tube member.

[0033] Alternatively, the profile surface has a first gripping surface configured for holding and engaging the fastening device to the support arm device.

[0034] Alternatively, the profile surface has a second gripping surface configured for holding and engaging the fastening device to the support arm device.

[0035] This means that the durability and reliability of the fastening device can be improved.

[0036] Alternatively, the fastening device is formed with a first hook member comprising a first gripping surface configured to engage a first flange of the cross-sectional profile shape.

[0037] Alternatively, the fastening device is formed with a second hook member comprising a second gripping surface configured to engage a second flange of the cross-sectional profile shape.

[0038] Alternatively, the profile surface has a first groove configured to receive a first flange of the cross-sectional profile.

[0039] Alternatively, the profile surface has a second groove configured to receive a second flange of the cross-sectional profile.

[0040] Alternatively, the first gripping surface of the first hook member is configured to engage a first free lip end section of the cross-sectional profile.

[0041] Alternatively, the second gripping surface of the second hook member is configured to engage a second free lip end section of the cross-sectional profile.

[0042] Alternatively, the profile surface of the fastening device is a profile surface configured to engage and retain the fastening device to the support arm device and / or is provided with a first clip member and / or a snap-fit clamping joint member configured to engage and retain the fastening device to the support arm device.

[0043] Alternatively, the snap-fit clamping joint feature of the profile surface is configured to engage and retain the fastening device to the support arm device and the snap-fit clamping joint feature of the profile surface can be part of a coupling member of the fastening device.

[0044] Alternatively, the fastening device is made of a deformable material, the fastening device being configured to bend outwards when the fastening device is clamped to the cross-sectional profile.

[0045] Alternatively, the profile surface is provided with a second clip member and / or a snap-fit clamping joint member configured to engage and retain the fastening device to the support arm device.

[0046] Alternatively, the first clip member and / or the snap-fit clamping joint member is arranged at a first end portion of the fastening device.

[0047] Alternatively, the second clip member and / or the snap-fit clamping joint member is arranged at a second end portion of the fastening device.

[0048] Alternatively, the first clip member and / or the snap-fit clamping joint member is an integral part of the fastening device.

[0049] Alternatively, the second clip member and / or the snap-fit clamping joint member is an integral part of the fastening device.

[0050] Alternatively, the support arm device is elongated and formed along a central axis, and the support arm device comprises an elongated profile element extending along the central axis and having a cross-sectional profile in the shape of a U-shape, an omega shape, a hat-shaped profile shape, an I-shape, a box shape, an L-shape, a U-shaped channel, a C-shaped channel, an omega-shaped channel profile, or other suitable cross-sectional profile form having said cross-sectional profile shape.

[0051] Alternatively, the elongated profile element has a first elongated cut edge and / or a second elongated cut edge extending along the elongation of the elongated profile element.

[0052] Alternatively, the first elongated cut edge and / or the second elongated cut edge extends along said elongation within a first edge section and / or a second edge section of the elongated profile element.

[0053] Alternatively, the fastening device is configured as a bracket having a profile in the form of a U-shaped profile, an omega-shaped profile, a hat-shaped profile, an I-shaped profile, a box-shaped profile, an L-shaped profile, a U-shaped profile channel, a C-shaped profile channel, an omega-shaped profile channel or other suitable profile or cross-sectional profile.

[0054] Alternatively, the profile surface of the fastening device at least partially corresponds to the shape of the cross-sectional profile of the support arm device and the profile surface of the fastening device comprises a first holding portion configured to engage the first elongated cut edge of the elongated profile element.

[0055] Alternatively, the profile surface at least partially corresponds to the shape of the cross-sectional profile of the support arm device and the profile surface comprises a second holding portion configured to engage the second elongated cut edge of the elongated profile element.

[0056] Alternatively, the fastening device has an inner profile surface facing at least partially towards the elongated profile element of the support arm device when mounted.

[0057] Alternatively, the fastening device has an outer profile surface facing at least partially away from the elongated profile element of the support arm device when mounted.

[0058] Alternatively, the elongated profile element has the first and / or second flange portion extending along the support arm device and along the elongation of the elongated profile element.

[0059] Alternatively, the first flange portion comprises a first elongated cut edge.

[0060] Alternatively, the second flange portion comprises a second elongated cut edge.

[0061] Alternatively, the first and / or second flange portion is integrally formed with the elongated profile element.

[0062] Alternatively, the elongated profile element is made hollow and comprises a cavity extending along the central axis.

[0063] Alternatively, an elongated reinforcement wall or elongated reinforcement web portion is joined to the first flange portion.

[0064] Alternatively, an elongated reinforcement wall or elongated reinforcement web portion is joined to the second flange portion to reinforce the first and second flange portion of the elongated profile element.

[0065] Alternatively, the elongated reinforcement wall or elongated reinforcement web portion extends along or parallel to the central axis.

[0066] Alternatively, the first flange portion together with the second flange portion forms a U-shaped channel profile, an omega-shaped channel profile, a hat-shaped profile, an L-shaped profile, an H-shaped profile, a C-shaped channel profile, an open box-shaped cross-section profile, an open circular cross-section profile or a profile of other shape.

[0067] Alternatively, the cavity is formed by the inner side of the elongated reinforcing wall and the respective inner sides of the first flange portion and the second flange portion.

[0068] Alternatively, the profiled surface of the fastening device at least partially or completely corresponds to the cross-sectional profile shape of the support arm device, which is configured to engage and hold the fastening device to the support arm device.

[0069] Alternatively, the cross-sectional profile shape has an outer shape or an inner shape which partially or completely corresponds to the profiled surface of the fastening device.

[0070] Alternatively, the cross-sectional profile shape has an outer shape in the cross-section which is wider than the extension of the profiled surface of the fastening device in at least one portion.

[0071] Alternatively, the elongated reinforcing wall or the elongated reinforcing web portion is joined to the first elongated cut edge and the second elongated cut edge and arranged between the first elongated cut edge and the second elongated cut edge.

[0072] Alternatively, a first end line section of the elongated reinforcing wall or the elongated reinforcing web portion is arranged adjacent to the first elongated cut edge for leaving out a first free lip end section of the first flange portion, which protrudes from the first end line section of the elongated reinforcing wall or the elongated reinforcing web portion.

[0073] Alternatively, a second end line section of the elongated reinforcing wall or the elongated reinforcing web portion is arranged adjacent to the second elongated cut edge for leaving out a second free lip end section of the second flange portion, which protrudes from the second end line section of the elongated reinforcing wall or the elongated reinforcing web portion.

[0074] Alternatively, the respective first end line section and the second end line section extend along the elongation of the elongated profile element.

[0075] Alternatively, the first free lip end section protrudes from the outside of the elongated reinforcing wall or the elongated reinforcing web portion within a first area defined by the first end line section.

[0076] Alternatively, the second free lip end section protrudes from the outside of the elongated reinforcing wall or the elongated reinforcing web portion within a second area defined by the second end line section.

[0077] Alternatively, the first retaining portion of the fastening device is configured to engage the first free lip end section of the elongated profile element.

[0078] Alternatively, the second retaining portion of the fastening device is configured to engage the second free lip end section of the elongated profile element.

[0079] Alternatively, the first retaining portion of the fastening device comprises a first press-fit gripping feature adapted to provide the first form-fit coupling.

[0080] Alternatively, the second retaining portion of the fastening device comprises a second press-fit gripping feature adapted to provide the first form-fit coupling.

[0081] Alternatively, the first retaining portion is configured for an interference fit and / or a friction fit with the first free lip end section of the elongated profile element providing the first joint.

[0082] Alternatively, the second retaining portion is configured for an interference fit and / or a friction fit with the second free lip end section of the elongated profile element providing the second joint.

[0083] Alternatively, the first retaining portion is configured for a gripping action due to a spring-back characteristic of the first retaining portion relative to the other portions of the fastening device, wherein the gripping action acts between the first retaining portion and the first free lip end section.

[0084] Alternatively, the second retaining portion is configured for a gripping action due to a spring-back characteristic of the second retaining portion relative to the remaining portions of the fastening device, wherein the gripping action acts between the second retaining portion and the second free lip end section.

[0085] Alternatively, the elongated profile element comprises a plastic and / or a metal material and / or other suitable material.

[0086] Alternatively, the first flange portion and / or the second flange portion comprises the same material as the material of the elongated profile element.

[0087] Alternatively, the elongated profile element is configured as a structural profile configured to carry a tube member and / or a gas extraction unit.

[0088] Alternatively, the fastening device comprises a first coupling member configured to be releasably coupled to the first coupling element of the retaining element.

[0089] Alternatively, the fastening device comprises a second coupling member configured to be releasably coupled to the second coupling element of the retaining element.

[0090] Alternatively, the first holding portion and / or the second holding portion of the fastening device are oriented relative to each other such that, when the holding element is coupled to the first coupling member and the second coupling member and encloses the envelope surface of the tube member, a proper alignment of the holding element relative to the tube member is achieved.

[0091] Alternatively, the envelope surface of the tube member has at least one helical groove around the tube member.

[0092] Alternatively, the holding member encloses the tube member along the helical groove of the envelope surface of the tube member when installed.

[0093] Alternatively, the tube member is configured as a flexible conduit and / or a corrugated conduit.

[0094] Alternatively, the tube member is configured for ATEX approved applications (European Directive Appareils destinés à être utilisés en ATmosphères EXplosives) or for extraction applications with other explosive gases.

[0095] Alternatively, the tube member comprises an exhaust channel.

[0096] Alternatively, the tube member is coupled to an extraction nozzle for extracting and capturing gaseous fluids.

[0097] Alternatively, the support arm device and / or the elongated profile element comprises a composite matrix material, steel, aluminum or any other suitable material or combinations thereof.

[0098] Alternatively, the fastening device is made of an electrically conductive material or of a non-conductive material or combinations thereof.

[0099] Alternatively, the fastening device is made completely or partially of a lightweight material, such as aluminum or a composite matrix, or the fastening device is made of any other metallic material.

[0100] Alternatively, the support arm device has a hollow cross-sectional profile.

[0101] Alternatively, the coupling between the cross-sectional profile of the support arm device and the inner contour surface of the fastening device has a frictional interface by means of any suitable friction material or high-friction material.

[0102] Alternatively, the friction material comprises rubber, anti-slip elements, ceramic material or other high-friction material configured for dry frictional contact.

[0103] In this way, it is achieved that the fastening device is prevented from sliding along the support arm device.

[0104] Alternatively, the profiled surface of the fastening device comprises a friction member, such as a rubber pad, a non-slip rubber band or other suitable friction member comprising said friction material.

[0105] Alternatively, the profiled surface of the fastening device comprises a surface of a non-conductive material for avoiding the generation of sparks between the support arm device and the fastening device.

[0106] Alternatively, the friction material at least partly comprises a conductive material for providing an electrical contact between the support arm device and the fastening device.

[0107] Alternatively, the support arm device is part of a local gas extractor, wherein the tube member is configured for extracting gas.

[0108] Alternatively, the first coupling member comprises a first hook member.

[0109] Alternatively, the second coupling member comprises a second hook member.

[0110] Alternatively, the first coupling element comprises a first loop member.

[0111] Alternatively, the second coupling element comprises a second loop member.

[0112] Alternatively, the first coupling member comprises a first loop member.

[0113] Alternatively, the second coupling member comprises a second loop member.

[0114] Alternatively, the first coupling element comprises a first hook member.

[0115] Alternatively, the second coupling element comprises a second hook member.

[0116] Alternatively, the first coupling element and / or the second coupling element of the retaining element is an integral part of the retaining element.

[0117] Alternatively, the retaining element comprises a flexible material.

[0118] Alternatively, the retaining element comprises a rubber band, an O-ring, a flexible enclosing band, a conveyor belt type band or other retaining element suitable for enclosing the tube member when retaining the tube member.

[0119] Alternatively, the retaining element has a curvature corresponding to the radius of curvature of the tube member when taken in a transversal cross-section when retaining the tube member and the retaining element has an extension in a plane corresponding substantially or completely to a plane extending transversely to the extension of the tube member.

[0120] Alternatively, the retaining element is configured to be adjustable to fit and adapt to the tube member.

[0121] Alternatively, the retaining element comprises an elastic material and is configured to be stretchable and to recover its previous size or shape upon disassembly.

[0122] Alternatively, the retaining element is configured to be coupled to the tube member by partially or completely enclosing an envelope surface of the tube member.

[0123] Alternatively, the retaining element is an integral part of the fastening device and / or is permanently coupled to the fastening device, whereas the first coupling element of the retaining element is a free end of the retaining element.

[0124] Alternatively, the retaining element comprises at least a first coupling portion configured to be coupled to the tube member and to the fastening device.

[0125] Alternatively, the retaining element is a separate component comprising a first coupling portion and a second coupling portion, each configured to be coupled to the fastening device.

[0126] Alternatively, the fastening device is configured to securely retain the tube member to the support arm device by means of the retaining element.

[0127] Alternatively, the fastening device is characterized by a straight (when not deformed) and / or curved shape along its extension.

[0128] Alternatively, the curved shape corresponds to a matching curvature of the cross-sectional profile shape of the support arm device.

[0129] Alternatively, the fastening device is configured to closely enclose the elongated profile element upon installation.

[0130] Alternatively, the retaining element is adjustable and / or stretchable to closely enclose the tube member.

[0131] Alternatively, the retaining element comprises a stretchable band configured to be coupled to the first coupling member and / or to the second coupling member.

[0132] Alternatively, the retaining element comprises an elastic band for wrapping over an envelope surface of the tube member.

[0133] Alternatively, the retaining element is configured to be coupled to the fastening device and to the tube member via the first coupling member and / or the second coupling member (at least a portion of the retaining element can be permanently coupled to the fastening device and / or integral with the fastening device).

[0134] In this way, a secure fastening device is achieved that is easy to install to and disassemble from the support arm device in a safe and easy manner.

[0135] In this way a secure fastening device is achieved which is manufactured and mounted to and from the support arm device in a cost-effective manner.

[0136] Hereby it is achieved that the fastening device and the tube member can be dismounted for cleaning in a cost-effective manner.

[0137] Hereby it is achieved that the tube member is easy to mount to the support arm device.

[0138] The object or at least one of the objects is solved by a method of mounting a fastening device to a support arm device, wherein the fastening device is configured to be mounted to an elongated profile element of the support arm device having a cross-sectional profile shape, the fastening device is configured to hold a tube member by means of a holding element configured to be coupled to the fastening device and the tube member; the fastening device comprises a profile surface at least partly corresponding to said cross-sectional profile shape, wherein the profile surface is configured to engage and hold the fastening device to the elongated profile element when the fastening device is mounted to the elongated profile element, the method comprising the steps of; providing the fastening device; mounting the fastening device to the elongated profile element by engaging the profile surface to the elongated profile element, the profile surface being configured to hold the fastening device to the elongated profile element; and coupling the holding element to the tube member and the fastening device.

[0139] Alternatively, the method comprises the further step of guiding the fastening device on the free end of the elongated profile element.

[0140] Alternatively, the method comprises the further step of sliding the fastening device into place along the elongated profile element.

[0141] Alternatively, the method comprises the further step of mounting the fastening device to the elongated profile element, comprising snapping the fastening device to the elongated profile element.

[0142] Alternatively, the method comprises the step of coupling a first end of the holding element to the fastening device.

[0143] Alternatively, the method comprises the step of looping the holding element around an envelope surface of the tube member.

[0144] Alternatively, the method comprises the step of looping the holding element around the tube member in an imaginary plane oriented transversely or substantially transversely to a longitudinal direction of the tube member.

[0145] Alternatively, the envelope surface of the tube member comprises at least one helical groove around the tube member, wherein the holding element encloses the tube member along the at least one helical groove when mounted.

[0146] Alternatively, the method comprises the step of coupling a second end of the holding element to the fastening device.

[0147] The tube member can be defined as a tube, hose, pipe, channel, conduit, duct, guide, wire, or other.

[0148] Alternatively, the curvature of the cross-sectional profile of the elongated profile element (or the curvature of the cross-sectional profile) or the outer shape of the elongated profile element corresponds to the profile surface of the fastening device.

[0149] Alternatively, the cross-sectional profile corresponds to the shape of the elongated profile element completely or partially.

[0150] Alternatively, the cross-sectional profile can be defined by a cross-section taken transversely to a central axis extending along the elongation of the elongated profile element and / or outlines the profile.

[0151] Alternatively, the holding element is an integral part of the fastening device and / or the holding element is permanently coupled to the fastening device, whereas the first coupling element of the holding element is provided at a free end of the holding element.

[0152] The fastening device can be defined as a bracket, clasp, grip, lock, pincer fit, press fit, snap fit, or other.

[0153] The holding element can be defined as a strap, tie, loop, cord, chain, rubber band, O-ring, elastic band, or other. BRIEF DESCRIPTION OF DRAWINGS

[0154] The application will now be described by way of example with reference to the accompanying schematic drawings, in which:

[0155] Figure 1 a portion of a gas extractor comprising a tube member mounted to a support arm device according to a first example is illustrated;

[0156] Figure 2a a fastening device mounted to a support arm device according to a second example is illustrated in perspective view;

[0157] Figure 2b the fastening device and support arm device shown in Figure 2a are illustrated in cross-sectional view;

[0158] Figure 3 a fastening device according to a third example is illustrated in cross-sectional view;

[0159] Figure 4 a fastening device according to a fourth example is illustrated;

[0160] Figure 5 a fastening device configured to be coupled to a support arm device according to a fifth example is illustrated;

[0161] Figures 6a to 6c Fig. illustrates a different fastening device according to another example;

[0162] Figure 7 Fig. illustrates a fastening device according to a sixth example;

[0163] Figures 8a to 8b is a fastening device according to a seventh example;

[0164] Figure 9 Fig. illustrates a flow chart showing an exemplary method of mounting a fastening device to a support arm device of a gas extractor; and

[0165] Figure 10 Fig. illustrates a flow chart showing an exemplary method of mounting a fastening device to a support arm device of a gas extractor. DETAILED DESCRIPTION

[0166] In the following, exemplary embodiments of the present application will be described with reference to the accompanying drawings, wherein for the sake of clarity and in order to understand the present application, some non-essential details can be omitted from the drawings.

[0167] Figure 1 Fig. illustrates a part of a gas extractor 2 comprising a tube member 3 mounted to a support arm device 5 according to a first example. Figure 1 Fig. illustrates a fastening device 1 configured to be mounted to a support arm device 5. When the fastening device 1 is mounted to an elongated profile element 9 of the support arm device 5, the support arm device 5 comprises an across-sectional profile shape 8 that partly cooperates with a profile surface (not shown, see e.g. reference numeral 11 in Fig. ) of the fastening device 1. Figure 2b The fastening device 1 is configured to hold the tube member 3 by means of a holding element 7, such as an elastic band or other suitable banding.

[0168] The across-sectional profile shape 8 can be defined and / or outlined by a cross-section taken transversely to a central axis X extending along the elongation of the elongated profile element 9.

[0169] The profile surface of the fastening device 1 at least partly corresponds to the across-sectional profile shape 8 of the elongated profile element 9 of the support arm device 5. The profile surface is configured for engaging and holding the fastening device 1 to the elongated profile element 9 when the fastening device 1 is mounted to the elongated profile element 9.

[0170] The holding element 7 is configured to be coupled to the fastening device 1 and the holding element 7 is configured to be coupled to the tube member 3 to hold the tube member 3 to the support arm device 5 (e.g. by wrapping the holding element 7 around the tube member 3).

[0171] Figure 2a A fastening device 1 mounted to an elongated profile element 9 of a support arm 5" according to a second example is illustrated. The fastening device 1 has a profile surface (see reference numeral 11 in Figure 2b ) facing the support arm 5" configured to engage and hold the fastening device 1 to the support arm 5" and the fastening device 1 is provided with a first and a second snap-fit clamping joint 10' and 10" configured to engage and hold the fastening device 1 to the support arm 5". The fastening device 1 comprises a first coupling portion 14' in the shape of a first hook 15' configured to releasably couple to a first loop 17' of a flexible tube retaining strap 7' configured to hold an exhaust tube (not shown) to the support arm 5". The fastening device 1 further comprises a second coupling portion 14" in the shape of a second hook 15" configured to releasably couple to a second loop 17" of the flexible tube retaining strap 7' configured to hold said exhaust tube to the support arm 5". The elongated profile element 9 is hollow and comprises a cavity 20 extending along a central axis X.

[0172] Alternatively, the first and second snap-fit clamping joints 10' and 10" can be configured as sliding portions configured to cooperate with the first and second elongated cut edges 18' and 18" of the elongated profile element 9 and extending along the elongation of the elongated profile element 9. In this case, the fastening device 1 is mounted to the elongated profile element 9 by guiding the fastening device 1 onto the free end FE of the elongated profile element 9 and sliding the fastening device 1 into place along the elongated profile element 9.

[0173] Figure 2b The fastening device 1 and the support arm 5" shown in Figure 2a are illustrated in cross-sectional view. The fastening device 1 comprises a profile surface 11 facing the cross-sectional profile shape 8 and having a shape configured to cooperate with and partially enclose the cross-sectional profile shape 8 of the support arm 5". The profile surface 11 of the fastening device 1 has a first and a second gripping surface 13' and 13" having respective first and second hooks 16' and 16" configured to hold and engage the fastening device 1 to the support arm 5".

[0174] Figure 3A fastener 1 according to a third example is illustrated in cross-sectional view. The support arm 5’’’ of the gas extraction apparatus (not shown) comprises the elongated profile element 9 and is hollow and comprises a cavity 20 extending along a central axis X of the support arm 5’’’. The fastener 1 according to this third example is made more resilient and can be formed as a tie strap 7’’’ made of a resilient material, such as a plastic or rubber material.

[0175] The elongated profile element 9 can comprise a first flange portion 25’ and a second flange portion 25’’ and an elongated stiffening web portion 26 connected to the respective first and second flange portions 25’ and 25’’.

[0176] The first and second flange portions 25’ and 25’’ can be integrally formed with each other and with the elongated stiffening web portion 26. The elongated stiffening web portion 26 is joined to the first and second flange portions 25’ and 25’’ for stiffening the support arm 5’’’.

[0177] The first and second end line segments 28’ and 28’’ of the elongated stiffening web portion 26 can be arranged adjacent to the respective first and second elongated cut edges 18’ and 18’’ of the elongated profile element 9 for forming the respective first and second free lip end sections 30’ and 30’’ of the support arm 5’’’.

[0178] The respective first and second free lip end sections 30’ and 30’’ can protrude from the respective first and second end line segments 28’ and 28’’.

[0179] The respective first and second lip end sections 30’ and 30’’ of the support arm 5’’’ can be configured to cooperate with the first and second slots 39’ and 39’’ of the fastener 1, respectively, wherein the first and second slots 39’ and 39’’ are configured for engaging and holding the fastener 1 to the support arm 5’’’.

[0180] The first profile surface 11’ of the fastener 1 can at least partly correspond to a portion of the outer cross-sectional profile shape 8’ of the support arm 5’’’. The first and second slots 39’ and 39’’ (corresponding to the first and second holding portions) are thus configured to engage the respective first and second lip end sections 30’ and 30’’ of the support arm 5’’’.

[0181] The fastening device 1 can further comprise a first coupling part 34' and a second coupling part 34" configured to be releasably coupled to a respective first hook 35' and a second hook 35" of a tube holder strap 38' configured to hold an exhaust tube 3, e.g. configured for ATEX approved applications or other explosive gas extraction applications. The exhaust tube 3 can be configured as a flexible and / or corrugated conduit.

[0182] Figure 4 A fastener 44 according to a fourth example is illustrated in a cross-sectional view. The exhaust tube 40 is held to the support arm 5"" by means of an elastic rubber strip 42 coupled to the fastener 44, which in turn is coupled to the support arm 5"" and engaged to the support arm 5"" via a first clamping piece 46' and a second clamping piece 46". Thus, the fastener 44 comprises a first holding portion 48' and a second holding portion 48' configured to hold the fastener 44 to the support arm 5"". The envelope surface 41 of the exhaust tube 40 comprises at least one helical groove 49 encircling the exhaust tube 40. The elastic rubber strip 42, when mounted, encloses the exhaust tube 40 along the helical groove 49 of the envelope surface 41. The first holding portion 48' and the second holding portion 48" of the fastener 44 are oriented relative to each other such that a proper alignment of the elastic rubber strip 42 relative to the exhaust tube 40 is achieved when the elastic rubber strip 42 is coupled to the first coupling part 41' and the second coupling part 41" of the fastener 44 and encloses the envelope surface 41 of the exhaust tube 40.

[0183] Figure 5 A fastening device 1 according to a fifth example is illustrated, the fastening device 1 being configured to be coupled to a first lip end section 50' and a second lip end section 50" of a support arm 55, the cross-section of the support arm 55 being C-shaped. The fastening device 1 is made of a hard material and the fastening device 1 is mounted to the support arm 55 by positioning the fastening device 1 at a free end (not shown) of the elongated profile element 9 of the support arm 55 and sliding the fastening device 1 along the support arm 55 into a desired position on the support arm 55. The fastening device 1 comprises a first hook 15' and a second hook 15" configured to be releasably coupled to a holding strap (not shown) adapted to hold an exhaust tube (not shown) to the support arm 55.

[0184] Figure 6aA fastening device 1 according to another example is illustrated. The fastening device 1 is made of a hard material and the fastening device 1 is mounted onto the hollow air arm 5 by positioning the fastening device 1 at the free end (not shown) of the elongated profile element 9 of the hollow air arm 5 and sliding the fastening device 1 into a desired position on the hollow air arm 5. The fastening device 1 comprises a profile surface 11 which at least partly corresponds to and partly faces the cross profile outer shape 8 of the elongated profile element 9. Thus, the fastening device 1 has a shape and a profile surface 11 which are configured to cooperate with and partly enclose the cross profile outer shape 8 of the hollow air arm 5. The profile surface 11 of the fastening device 1 is configured for engaging and holding the fastening device 1 to the elongated profile element 9 when the fastening device 1 is mounted thereto.

[0185] Figure 6b A fastening device 1 according to another example is illustrated. The fastening device 1 is mounted to the outer shape 8 of the elongated profile element 9 of the hollow air arm 5. The fastening device 1 comprises a profile surface 11 which is configured to cooperate with and partly enclose a portion of the outer shape 8 of the hollow air arm 5. Thus, the fastening device 1 has a shape and a profile surface 11 which are configured to cooperate with and partly enclose the cross profile outer shape 8 of the elongated profile element 9. The profile surface 11 of the fastening device 1 is configured for engaging and holding the fastening device 1 to the elongated profile element 9 when the fastening device 1 is mounted thereto. When the elastic fastener 62 is mounted, the elastic fastener 62 encloses and holds the air pipe 63 to the elongated profile element 9. The elastic fastener 62 comprises a first coupling loop 67’ which is configured to be coupled to the hook 65 of the fastening device 1. The other end of the elastic fastener 62 is integrally mounted to the fastening device 1 via a joint 69, but can also be releasably mounted to the fastening device 1.

[0186] Figure 6cA fastening device 1 according to another example is illustrated. The fastening device 1 is configured to be mounted to a support arm 5 of a gas extractor (not shown) for holding an exhaust pipe (not shown). The support arm 5 comprises an elongated hollow profile 9. The fastening device 1 is thus configured to be mounted to the support arm 5. The support arm 5 has a cross-sectional profile outer shape 8. The fastening device 1 is configured to hold the exhaust pipe by means of a holding element (not shown, e.g. an elastic band), wherein the holding element is configured to be coupled to the fastening device 1 and the exhaust pipe by coupling one end of the holding element to the first hook 22' of the fastening device 1 and wrapping the holding element around the exhaust pipe envelope surface and coupling the other end of the holding element to the second hook 22". The fastening device 1 comprises a contour surface CS configured to at least partially cooperate with the cross-sectional profile outer shape 8.

[0187] The contour surface CS of the fastening device 1 can at least partially correspond to the cross-sectional outer profile shape 8 of the elongated profile element 9 of the support arm device 5. The contour surface CS is configured for engaging and holding the fastening device 1 to the elongated profile element 9 when the fastening device 1 is mounted to the elongated profile element 9.

[0188] Alternatively, the cross-sectional outer profile shape 8 has an outer shape in the cross-section which is wider at least in a portion than the extension of the contour surface CS of the fastening device 1.

[0189] Alternatively, the engaging and holding is achieved by the support arm surrounding portion SP of the fastening device 1 partially clamping against a portion of the elongated profile element 9 and / or fully clamping against the outer surface of the cross-sectional profile shape 8 of the elongated profile element 9.

[0190] Figure 7 A fastening device 1 according to a sixth example is illustrated. The fastening device 1 comprises an electrically conductive plate 72 arranged at each hook end. The electrically conductive plate 72 is configured to allow an electrical contact between the support arm 5 and the fastening device 1.

[0191] The coupling and / or engagement and / or abutment between the fastening device 1 and the support arm 5 has a frictional interface by means of any suitable high-friction material 77 of the fastening device 1. The frictional material 77 can comprise rubber, anti-slip elements, ceramic material or other high-friction material for dry contact between the contour surface CS of the fastening device 1 and the cross-sectional profile shape 8 of the support arm 5. In this way, it is achieved that the fastening device 1 is prevented from sliding along the support arm 5, while the electrically conductive plate 72 prevents a spark from being generated between the support arm 5 and the fastening device 1 in case of electrostatic charge of the fastening device 1.

[0192] Alternatively, the frictional material at least partially or entirely comprises an electrically conductive material for providing an electrical contact between the support arm 5 and the fastening device 1.

[0193] Figure 8a and Figure 8b A fastening device 1 according to a seventh example is illustrated. The fastening device 1 comprises a first and a second support arm profile engagement and holding block 81', 81" each coupled to a holding strap 88, wherein the holding strap 88 is configured to hold an exhaust pipe (not shown) against a support arm 85 to which the fastening device 1 is coupled. A respective first and second profile surface 811, 811 of the respective first and second support arm profile engagement and holding block 81', 81" is configured for engaging and holding the first and second support arm profile engagement and holding block 81', 81" to the support arm 85.

[0194] Figure 8b A first profile surface 811 of the first support arm profile engagement and holding block 81' is shown in Fig. 6. The first support arm profile engagement and holding block 81' is mounted onto the support arm 85 by positioning the first support arm profile engagement and holding block 81' at a free end (not shown) of the support arm 85 and sliding the first support arm profile engagement and holding block 81' along the support arm 85 in a longitudinal direction into a desired position on the support arm 85. The first profile surface 811' of the support arm first profile engagement and holding block 81' provides a close fit to the first free first lip end section 84' of the flange portion 82 of the support arm 85.

[0195] The second support arm profile engagement and holding block 81" is mounted onto the support arm 85 by positioning the second support arm profile engagement and holding block 81" at said free end and sliding the second support arm profile engagement and holding block 81" along the support arm 85 in a longitudinal direction into a desired position on the opposite second free lip end section 84" adjacent to the first support arm profile engagement and holding block 81'.

[0196] Alternatively, the respective first and second support arm profile engagement and holding block 81', 81" can be configured to clamp against a portion of an outer surface of the support arm 85.

[0197] Figure 9 An exemplary flow chart illustrating a method of installing a fastening device to a support arm arrangement of a gas extractor is illustrated. The fastening device is configured to be mounted to an elongated profile element of the support arm arrangement. The elongated profile element has a cross-sectional profile shape. The fastening device is configured to hold a pipe member by means of a holding element configured to be coupled to the fastening device and the pipe member. The fastening device comprises a profile surface corresponding at least partly to said cross-sectional profile shape, wherein the profile surface is configured for engaging and holding the fastening device to the elongated profile element when the fastening device is mounted to the elongated profile element. Figure 9Step 901 in comprises the start of the method. Step 902 comprises the implementation of the method. Step 903 comprises the stop of the method.

[0198] Step 902 can comprise the following steps; providing a fastening device; mounting the fastening device to the elongated profile element by engaging a profile surface to the elongated profile element for holding the fastening device to the elongated profile element; and connecting a holding element to the tube member and the fastening device.

[0199] Figure 10 An exemplary flow chart illustrating a method of mounting a fastening device to a support arm device of a gas extractor is illustrated. The fastening device is configured to be mounted to an elongated profile element of the support arm device. The elongated profile element has a cross-sectional profile shape. The fastening device is configured to hold a tube member by means of a holding element configured to be coupled to the fastening device and the tube member. The fastening device comprises a profile surface having a profile shape at least partly corresponding to said cross-sectional profile shape, wherein the profile surface is configured for engaging and holding the fastening device to the elongated profile element when the fastening device is mounted to the elongated profile element. Figure 10 Step 1001 in comprises the start of the method. Step 1002 comprises providing a support arm device of a gas extractor. Step 1003 comprises providing a fastening device. Step 1004 comprises mounting the fastening device to an elongated profile element by guiding the fastening device over a free end of the elongated profile element. Step 1005 comprises engaging a profile surface of the fastening device to the elongated profile element for holding the fastening device to the elongated profile element by sliding the fastening device into place along the elongated profile element 9.

[0200] Step 1006 can comprise coupling a first end of the holding element to the fastening device.

[0201] Step 1004 can comprise looping the holding element around an envelope surface of the tube member.

[0202] The looping of the holding element around the tube member can be performed or substantially performed in a hypothetical plane oriented transversely to a longitudinal direction of the tube member, wherein the longitudinal direction of the tube member extends in parallel with a central axis of the elongated profile element when the tube member is mounted to the support arm device.

[0203] Step 1007 can comprise coupling a second end of the holding element to the fastening device.

[0204] In this way a simple and secure coupling of the tube member to the support arm device is achieved. Thus, the fastening device is securely and easily mounted to the support arm device and will be securely attached to the support arm device.

[0205] In this way it is achieved in a simple manner that the holding element can be coupled to the fastening device and that the encircling of the holding element can be performed in a safe manner, whereby the service person can concentrate on the coupling of the holding element around the tube member, while the fastening device is firmly fastened to the support arm device.

[0206] In this way it is achieved that the holding element can be detached and installed in a safe manner and that the cleaning and the service of the support arm device are facilitated in a cost-effective manner.

[0207] Alternatively, the step of coupling the holding element to the fastening device is performed before the step of mounting the fastening device to the elongated profile element.

[0208] Alternatively, the step of coupling the holding element to the fastening device is performed partly by integrally coupling one end of the holding element to the fastening device.

[0209] The step 1008 comprises the stopping of the method.

[0210] Of course, the application is not in any way limited to the preferred examples described above, but many possibilities of modification or combinations of the described examples of the application will be apparent to a person with ordinary skill in the art without thereby departing from the scope of the application as defined in the annexed claims.

Claims

1. A fastening device (1) configured to be mounted to an elongated profile element (9) of a support arm assembly (5), the elongated profile element (9) having a cross-sectional profile shape (8), the fastening device (1) configured to retain a tube member (3) by means of a retaining element (7), the retaining element (7) configured to be connected to the fastening device (1) and the tube member (3); characterized in that, The fastening device (1) includes: a profile surface (11, CS) having a profile that at least partially corresponds to the cross-sectional profile shape (8) of the elongated profile element (9), wherein the profile surface (11, CS) is configured to engage and retain the fastening device (1) to the elongated profile element (9) when the fastening device (1) is mounted to the elongated profile element (9); and a first connecting member (14', 22', 34', 41', 65) configured to be releasably connected to a first connecting element of the retaining element (7), wherein the profile surface (11, CS) includes a first gripping surface (13') and a second gripping surface (13''), the first gripping surface (13') and the second gripping surface (13'') each being configured to retain and engage the fastening device (1) to the support arm device (5).

2. The fastening device (1) according to claim 1, wherein, The profile surface (11, CS) has a profile configured to clamp around the support arm device (5) and / or has a profile configured to surround the cross-sectional profile shape (8) of the support arm device (5).

3. The fastening device (1) according to claim 1 or 2, wherein, The fastening device (1) is formed with a first hook member (15') including the first gripping surface (13'), the first hook member (15') being configured to engage with the first flange (25') or the first free lip end segment (84') of the cross-sectional profile shape (8).

4. The fastening device (1) according to claim 3, wherein, The second gripping surface (13'') is configured to engage with the second flange (25'') or the second free lip end segment (84'') of the cross-sectional profile shape (8).

5. The fastening device (1) according to claim 4, wherein, The fastening device (1) is formed with a second hook member (15'') including the second gripping surface (13''), the second hook member (15'') being configured to engage with the second flange (25'') of the cross-sectional profile shape (8).

6. The fastening device (1) according to any one of claims 1, 2, 4, and 5, wherein, The profile surface (11, CS) of the fastening device (1) includes a non-conductive material for preventing sparks from being generated between the support arm device (5) and the fastening device (1).

7. The fastening device (1) according to claim 6, wherein, A conductive plate (72) is provided to allow electrical contact between the support arm device (5) and the fastening device (1).

8. A method for installing a fastening device (1) to a support arm assembly (5), wherein, The fastening device (1) is configured to be mounted to an elongated profile element (9) of a support arm device (5) having a cross-sectional profile shape (8), the fastening device (1) is configured to retain a tube member (3) by means of a retaining element (7), the retaining element (7) being configured to connect to the fastening device (1) and the tube member (3); the fastening device (1) includes a profile surface (11, CS) that at least partially corresponds to the cross-sectional profile shape (8), wherein the profile surface (11, CS) is configured to engage and retain the fastening device (1) to the elongated profile element (9) when the fastening device (1) is mounted to the elongated profile element (9), the method comprising the following steps: - Provide the fastening device (1); - The fastening device (1) is mounted to the elongated profile element (9) by engaging the profile surface (11, CS) to the elongated profile element (9), the profile surface being configured to hold the fastening device (1) to the elongated profile element (9); and - The retaining element (7) is connected to the pipe member (3) and the fastening device (1) by releasably connecting the first connecting member (14', 22', 34', 41', 65) of the fastening device (1) to the first connecting member of the retaining element (7). The contour surface (11, CS) includes a first gripping surface (13') and a second gripping surface (13''), each configured to hold and engage the fastening device (1) to the support arm device (5).

9. The method according to claim 8, wherein, The method steps for installing the fastening device (1) onto the elongated profile element (9) include a further step of guiding the fastening device (1) on the free end (FE) of the elongated profile element (9).

10. The method according to claim 9, wherein, The method also includes the step of sliding the fastening device (1) into place along the elongated profile element (9).

11. The method according to claim 8, wherein, The method steps of installing the fastening device (1) to the elongated profile element (9) include snapping the fastening device (1) onto the elongated profile element (9).

12. An extraction device comprising a fastening device (1) according to any one of claims 1 to 7.

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