NL2022149B1 - Air diffusing device - Google Patents

Air diffusing device Download PDF

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Publication number
NL2022149B1
NL2022149B1 NL2022149A NL2022149A NL2022149B1 NL 2022149 B1 NL2022149 B1 NL 2022149B1 NL 2022149 A NL2022149 A NL 2022149A NL 2022149 A NL2022149 A NL 2022149A NL 2022149 B1 NL2022149 B1 NL 2022149B1
Authority
NL
Netherlands
Prior art keywords
air
outlet channel
air outlet
diffuser
heat
Prior art date
Application number
NL2022149A
Other languages
Dutch (nl)
Inventor
Theodoor Fijan Jeroen
Koelewijn Peter
Blok Martijn
Original Assignee
Heinen & Hopman Eng B V
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Heinen & Hopman Eng B V filed Critical Heinen & Hopman Eng B V
Priority to NL2022149A priority Critical patent/NL2022149B1/en
Application granted granted Critical
Publication of NL2022149B1 publication Critical patent/NL2022149B1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F24F11/32—Responding to malfunctions or emergencies
    • F24F11/33—Responding to malfunctions or emergencies to fire, excessive heat or smoke
    • F24F11/35—Responding to malfunctions or emergencies to fire, excessive heat or smoke by closing air passages
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C2/00—Fire prevention or containment
    • A62C2/06—Physical fire-barriers
    • A62C2/065—Physical fire-barriers having as the main closure device materials, whose characteristics undergo an irreversible change under high temperatures, e.g. intumescent
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C2/00—Fire prevention or containment
    • A62C2/06—Physical fire-barriers
    • A62C2/12—Hinged dampers
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C2/00—Fire prevention or containment
    • A62C2/06—Physical fire-barriers
    • A62C2/24—Operating or controlling mechanisms
    • A62C2/241—Operating or controlling mechanisms having mechanical actuators and heat sensitive parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/02—Ducting arrangements
    • F24F13/06—Outlets for directing or distributing air into rooms or spaces, e.g. ceiling air diffuser
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
    • F24F13/10—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers
    • F24F13/14—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre

Abstract

An air diffusing device for distributing supplied air into a room, comprising an air chamber enclosed by a housing, the housing provided with at least one air inlet opening through which air can be supplied to the air chamber and with an air feed-through opening through which air from the air chamber can flow to a diffuser unit of the air diffusing device, the diffuser unit coupled to the housing and comprising two opposite walls defining an air outlet channel there between which channel extends from the feedthrough opening to an air outlet, characterized in that the diffuser unit comprises heat responsive means provided in communication with the air outlet channel and adapted to change in response to heat from a discharge state, in which air freely flows through the outlet channel from the feedthrough opening to the air outlet, into a sealing state in which the outlet channel is sealed.

Description

P116091NL00 Title: Air diffusing device The invention relates to an air diffusing device for distributing supplied air into a room, comprising an air chamber enclosed by a housing, the housing provided with at least one air inlet opening through which air can be supplied to the air chamber and with an air feed-through opening through which air from the air chamber can flow to a diffuser unit of the air diffusing device, the diffuser unit coupled to the housing and comprising a wall defining an air outlet channel extending from the feed-through opening to an air outlet.
Such an air diffusing device is generally known in the prior art and is for instance used as part of an air supply or conditioning system for supplying air, preferably in conditioned form, to rooms, cabins or other living areas in buildings or vehicles. A particular example of use of a known air diffusing device, often called cabin unit, is as part of a marine heating, ventilating and air conditioning system for supplying conditioned air to a cabin on a ship. Such an air diffusing device, or cabin unit, usually comprises a housing having an air inlet opening for coupling to an air duct system of the air conditioning system which distributes conditioned air throughout the ship. The housing is regularly installed out of sight in the plenum above a false or suspended ceiling in the cabin. From an air chamber in the housing the air may flow via an air feed-through opening in the housing to the cabin space through openings in the ceiling, such as for instance an air grid provided in the ceiling.
Alternatively cabin units may comprise a diffuser unit coupled to the housing. The diffuser unit usually comprises at least one wall defining an air outlet channel which extends from the air feed-through opening in the housing through a ceiling on which the housing is installed to an air outlet in the cabin space. Although such diffuser unit assists in a desired diffusing of the air into the cabin space, the diffuser unit penetratingthrough the ceiling has as a consequence that this affects the requirements to fire resistance for the ceiling as specified in ceiling fire classifications for marine and offshore devices. Accordingly, known cabin units with diffuser unit are constructed from an approved non-combustible material in order to meet the applicable fire codes as specified in the standard regulation SOLAS Ch.II-2.
It is an object of the present invention to provide an improved air diffusing device. A particular object of the present invention is to provide a Light-weight air diffusing device. More particularly it is an object of the present invention to provide a light-weight air diffusing device that is certified as a B15 class device according to IMO Res. A 754(18) or MSC307(88) 2010 FTP CODE.
To this end the invention provides a device as defined in one or more of the appended claims.
Particularly, according to the invention there is provided an air diffusing device for distributing supplied air into a room, comprising an air chamber enclosed by a housing, the housing provided with at least one air inlet opening through which air can be supplied to the air chamber and with an air feed-through opening through which air from the air chamber can flow to a diffuser unit of the air diffusing device, the diffuser unit coupled to the housing and comprising at least one wall defining an air outlet channel which extends from the feed-through opening to an air outlet, wherein the air diffusing device comprises heat responsive means provided in communication with the air outlet channel and adapted to change in response to heat from a discharge state, in which air freely flows through the outlet channel from the feed-through opening to the air outlet, into a sealing state in which the outlet channel is sealed.
By applying the heat responsive means in the air diffusing device according to the invention an opening in the ceiling formed by the diffuser unit may be suitably closed in the case of fire. This prevents the fire frompassing through the ceiling into the plenum and air duct system.
Preferably the heat responsive means are capable of sealing the outlet channel in an at least almost airtight manner, i.e. substantially reducing the flow of air from the air diffusing device into the corresponding room or cabin, so that in the event of a fire the supply of air via the air diffusing device is minimized or completely prevented.
In particular the air diffusing device according to the invention is capable of closing the outlet channel such that the device meets the requirements of a B15 class certified device when the air diffusing device is applied in a ceiling of a marine or offshore building or vessel.
By enabling a fire resistant closure of the opening in the ceiling formed by the air outlet channel, the air diffusing device according to the invention can be safely applied as part of an air supply or conditioning system of any room, cabin or other living area in a building or a vehicle, irrespective of the materials it is made of.
Accordingly the air diffusing device according to the invention may be made of any suitable material, e.g. from approved non- combustible materials such as steel, in which case the heat responsive means provide an additional fire safety means, or from other materials, e.g.
Lightweight materials such as plastic.
The heat responsive means are provided in the air diffusing device such that in the event of a fire a fire resistant closure of the opening in the ceiling is enabled.
The heat responsive means may for example be provided in the air chamber of the housing to enable sealing of the outlet channel at the feed through opening.
A preferred embodiment of the air diffusing device according to the invention is characterized in that the heat responsive means are provided in at least one of the walls of the diffuser unit defining the air outlet channel.
The heat responsive means may thus be applied as part of the diffuser unit, allowing for installment and/or a replacement of the heat responsive means together with the diffuser unit separately from the housing of the air diffusing device.
This is for example convenient for inspection, maintenanceor replacement purposes, wherein it is not necessary to replace the complete air diffusing device including the housing with air chamber.
As such a further preferred embodiment of the air diffusing device according to the invention is characterized in that the housing comprises coupling means for releasable coupling of the diffuser unit.
In a particular embodiment the air diffusing device according to the invention is characterized in that the heat responsive means comprise a valve in the air outlet channel. The valve may be adapted and arranged to move from an open state, in which the air outlet channel remains substantially open for flow of air there through, to a closed state in which the air outlet channel is substantially or completely closed for flow of air there through when affected by fire. For instance the valve may be formed by a plate of non-combustible material, e.g. steel, mounted to a wall part of the device facing the air outlet channel and actuated by actuating means, e.g. a spring, to move between the open and closed state. Alternatively and/or additionally the valve may be maintained in the open state by releasable attachment means, e.g. a wire, which attachment means in response to heat or fire may release the valve from the open state into the closed state.
A further particular embodiment of the air diffusing device according to the invention is characterized in that the valve is rotatably coupled to an outer end of at least one of the walls of the diffuser unit.
In a further particular embodiment the air diffusing device according to the invention is characterized in that the valve is translatable in the air outlet channel between a discharge state in which there is an opening between the valve and an inner surface of the air outlet channel and a sealing state in which the valve seals the flow path of the air outlet channel.
In a further preferred embodiment the air diffusing device according to the invention is characterized in that the heat responsivemeans comprise a heat expansion material for expanding into the air outlet channel when the material is heated to a temperature above a predetermined temperature threshold. The heat expansion material may be adapted to increase in volume in response to a temperature increase.
5 Accordingly in the event of a fire the resulting increase of air temperature will result in the heat expansion material to increase in volume within the air outlet channel thereby effectively blocking a flow path of air in the channel.
A particular embodiment of the air diffusing device according to the invention is characterized in that the heat expansion material comprises a heat expanding foam, particularly an expendable graphite, more particularly a formulation of polyurethane and expandable graphite. A heat expanding foam, and in particular the expendable graphite, provides good properties as heat expansion material, with control of a temperature threshold or range at which the foam will expand. Accordingly occurrence of an unexpected or undesired volume increase of the heat expansion material may be prevented.
The heat responsive means of the air diffusing device according to the invention may be completely formed by the heat expansion material, and may be applied in the device such that the air outlet channel remains completely unobstructed. Alternatively the heat expansion material may be combined with other suitable sealing means, such as a valve. For instance the heat expansion material may act as actuating means of a valve. For example after a threshold temperature for the heat expansion means is exceeded, i.e. in the event of a fire, the heat expansion means due to a volume increase urge the valve from a discharge state, in which the valve leaves an opening between its surface and an inner surface of the air outlet channel, into a sealing state, in which the valve seals the flow path of the air outlet channel.
In a further preferred embodiment the air diffusing device according to the invention is characterized in that at least the housing is made of plastic. The housing of plastic forms a substantial reduction in weight of the air diffusing device as compared to air diffusing devices with a housing made of steel as approved non-combustible material. In a particular embodiment the air diffusing device according to the invention has at least the housing formed by an inner layer of an expanded plastic (foam) and an outer shell of hard plastic. Preferably most or all parts of the air diffusing device are made of plastic. Such parts are particularly preferably able to be produced in a convenient way, e.g. by injection moulding or other suitable techniques.
Not only does a housing or device of plastic provide a substantial and preferred weight reduction, enabling the device to be installed more easily and conveniently, particularly on a top surface of a false or suspended ceiling, but moreover being formed from plastic allows the device to be shaped in more suitable and desired shapes. This is particularly convenient when the device, i.e. cabin unit, is part of a marine heating, ventilating and air conditioning system installed on a marine vessel, in view of potential weight and space limitations that may apply.
In a further preferred embodiment the air diffusing device according to the invention is characterized in that the housing is provided with at least two air inlet openings for supplying air from two air supply ducts.
A further preferred embodiment of the air diffusing device according to the invention is characterized in that the diffuser unit comprises two opposite walls defining the air outlet channel extending from the feed-through opening to the air outlet wherein a first wall of the two opposite walls of the diffuser unit is provided with fixation means for fixation of the wall to a ceiling of the room.
A further particular embodiment of the air diffusing device according to the invention is characterized in that a second wall of the two opposite walls of the diffuser unit is provided with the heat responsive means.
A further particular embodiment of the air diffusing device according to the invention is characterized in that the second wall is releasable coupled to the first wall.
These and other aspects of the present invention are hereinafter further elucidated by the appended drawing and the corresponding embodiments, which form part of the present application. The drawing is not in any way meant to reflect a limitation of the scope of the invention, unless this is clearly and explicitly indicated. In the drawing: Fig. 1 shows a first embodiment of the air diffusing device according to the invention; Fig. 2 shows a second embodiment of the air diffusing device according to the invention; Fig. 3 shows a third embodiment of the air diffusing device according to the invention; Fig. 4 shows a fourth embodiment of the air diffusing device according to the Invention; Fig .5 shows a fifth embodiment of the air diffusing device according to the invention; Fig .6 shows a sixth embodiment of the air diffusing device according to the invention; Fig .7 shows a seventh embodiment of the air diffusing device according to the invention; and Fig .8 shows an eight embodiment of the air diffusing device according to the invention.
In this application similar or corresponding features are denoted by similar or corresponding reference signs.
The description of the various embodiments is not limited to the examples shown in the figures and the reference number used in the detailed description and the claims are not intended to limit the description of the embodiments, but are included to elucidate the embodiments by referring to the examples shown in the 8 figures.
In a first embodiment of the air diffusing device according to the invention as shown in figure 1, the air diffusing device comprises an air chamber 16 enclosed by a housing 18 provided with at least one air inlet opening 20, through which air can be supplied from elsewhere to the air chamber 16. For illustrative purposes the housing 18 is shown in all the figures to be placed in the plenum above or unto ceiling 14 of room 12. However, other placements of the housing are also possible.
The housing 18 comprises an air feed-through opening 22 through which air from the air chamber 16 can flow to a diffuser unit 24 of the air diffusing device 10 which diffuser unit extends through the ceiling 14 for distributing the supplied air into the room 12. The diffuser unit 24 is coupled to the housing 18 and comprises two opposite walls 26,28 defining an air outlet channel 30 there between.
The air outlet channel 30 extends from the feed-through opening 22 in the housing 18 to an air outlet 32 in the diffuser unit 24. The diffuser unit 24 is provided with heat responsive means 36, which are in communication with the air outlet channel 30. The heat responsive means 36 are provided unto the diffuser unit 24 to respond to heat.
The heat responsive means 36 are adapted to change in response to heat from a discharge state, into a sealing state.
In the discharge state air flows freely through the outlet channel 30 from the feed-through opening 22 to the air outlet 32. In the sealing state the outlet channel 30 is sealed.
The heat responsive means 36 in the current embodiment comprises heat expansion material 36, i.e. non-combustible material that expands in volume whenheated. The heat expansion material 36 expands into the air outlet channel 30 when the material 36 15 heated to a temperature above a predetermined temperature threshold. In the current embodiment the heat expansion material 36 is placed unto the outer edges of a second wall 28 of the two diffuser walls 26, 28, near the air outlet 32. The heat expansion material 36 could also be placed unto another diffuser wall, or unto more than one diffuser wall. The heat expansion material 36 could be made of a heat expanding foam, e.g. a foam made of polyurethane and expandable graphite. The diffuser unit can be made of non-combustible material. Since the diffuser unit 24 is provided with heat responsive means, which prevent air flow in the air outlet channel 30, fire or heat in the room 12 will not reach the housing 18 of the air diffusing device 10. The housing can therefore be made of combustible material, e.g. plastic, which will be less expensive to manufacture than a housing 18 of non-combustible material. When plastic is used for the housing 18 the weight of the housing 18 will also be less than a non-combustible housing 18. In this embodiment, the expansion material 36 will be close to a heat source. The material can therefore respond quickly to said heat source. In a second embodiment of the air diffusing device according to the invention as shown in figure 2, the heat responsive means comprise a valve 38 in the air outlet channel. The valve 38 can for instance he rotatably coupled to an outer end of at least one of the walls 26,28 of the diffuser unit
24. The valve 38 is translatable in the air outlet channel 30 between the discharge state and the sealing state. In the discharge state there 1s an opening between the valve 38 and an inner surface of the air outlet channel
30. In the sealing state the valve 38 seals the flow path of the air outlet channel 30. In this embodiment the heat expansion material 36 is used to translate the valve 38. The heat expansion material 36 is placed adjacent to the valve 38 in an outer part of the diffuser unit 24. When exposed to fire orheat the heat expansion material 36 will translate the valve 38, in doing so sealing the flow path of the air outlet channel 30.
By providing the heat responsive means 34 with a valve 38, the heat expansion material 36 itself does not need to close the air outlet channel 30. It only has to push the valve 38 into the sealing state. The advantage 1s that the heat expansion material 36 does not have to span a large space, requiring less of said material 36.
In a third embodiment of the air diffusing device according to the invention as shown in figure 3, the valve 38 is translated by a combination of a compression spring 40 and a melting alloy 42. Both are integrated into the diffuser unit 24. At room temperature the melting alloy 42 keeps the compression spring 40 under tension. The valve 38 will than be in the discharge state. When exposed to fire or heat the melting alloy 42 will melt, thus releasing the compression spring 40. The unleashed spring 40 which will translate the valve into the sealing state. The melting point of the alloy 42 should be between room temperature and below the melting temperature of any other part of the air diffusing device 10. The melting alloy 42 can be manufactured at less cost than the heat expansion material 36, making this embodiment more cost effective than previous mentioned embodiments.
In a fourth embodiment of the air diffusing device according to the invention as shown in figure 4, the air diffusing device comprises a similar air chamber 16 enclosed by a housing 18 as illustrated in the previous embodiments. However, in this fourth embodiment the heat responsive means comprise a valve forming a mechanical sealing device, wherein the valve comprises two valve walls 44,44’. The valve walls 44,44’ are mounted each with one end via a torsion spring 46 to either the housing 18 or, as illustrated in this embodiment, to a wall of a diffuser unit 24, in an air outlet channel 30. At or adjacent an opposite end of each of the valve walls 44,44’ a melting alloy body 42 is provided that keeps the walls 44,44 of the valve together in a discharge state. In doing so, the melting alloy 42 keepsthe torsion spring 46 under tension whilst the valve is in the discharge state. The two walls 44,44’ of the valve 38 together have approximately the same surface area as a cross-section area of the air outlet channel 30. In the event of a fire or other temperature increasing occurrence in the room 12, a resulting temperature increase above a predetermined threshold value of the melting alloy body 42 will melt the alloy, releasing the torsion spring 46 which will push the walls 44,44’ apart to a sealing state. In the sealing state the walls 44,44’ will seal the flow path of the air outlet channel 30, preventing supply of air to the room.
In a fifth embodiment of the air diffusing device according to the invention as shown in figure 5, the valve 38 is provided by a mechanical sealing device comprising a valve wall 44 and a valve shaft 48. The wall 44 can be translated along the shaft 48 from the discharge state to the sealing state by means of a compression spring 40. The valve shaft 48 protrudes from the air outlet channel 30, through the air feed-through opening 22 into the air chamber 16. The valve wall 44 is place near a end of the valve shaft, inside the air chamber 16. The melting alloy 42 keeps the valve wall 44 at a distance from the air outlet channel. In doing so, the melting alloy 42 also keeps the compression spring 40 under tension whilst the valve 38 is m the discharge state. The valve wall 44 has the same surface area as a cross- section of the air outlet channel 30. When the melting alloy 42 melts, the compression spring 40 1s released and the spring 40 will push the wall 44 into the air outlet channel 30, thus putting the valve 38 in the sealing state.
In a sixth embodiment of the air diffusing device according to the invention as shown in figure 6, the heat responsive means 34 are provided by a wall 50 of heat expansion material 36 inside the air outlet channel 30 between the air feed-through opening 22 and the air outlet 32. The heat expansion material wall 50 is placed to the side of the air outlet channel 30. In the discharge state, a surface area of a cross-section of the heat expansion material wall 50, which lays in the same plane as a cross-section of the airoutlet channel 30, is a fraction of a surface area of the said cross-section of the air outlet channel 30. When exposed to heat or fire, the heat expansion material 36 will seal the flow path of the air outlet channel 30. In a seventh embodiment of the air diffusing device according to the invention as shown in figure 7, there are multiple heat expansion material walls 50, spaced apart inside the air outlet channel 30. The multiple walls 50 divide the air outlet channel 30 between them, which means each individual wall 50 needs to fill only a part of the air outlet channel 30.
In an eight embodiment of the air diffusing device according to the invention as shown in figure 8, the heat responsive means 34 are provided by a pull spring 52 and one of the walls 28 of the diffuser unit 24. The wall 28 is kept at a distance from an other wall 26 (not depicted) of the diffuser unit 24 by at least one melting alloy 40, thus allowing air to flow freely from the feed-through opening 22 through the outlet channel 30. The wall 28 has a larger surface area than a surface area of a cross-section of the air outlet channel 30. When exposed to heat or fire the melting alloy 42 shall melt and unleash the pull spring 52. The pull spring will pull the diffuser wall 28 in the sealing state.
While this application may describe features as part of the same embodiment or as parts of separate embodiments, the scope of the present invention also includes embodiments comprising any combination of all or some of the features described herein.
Legend 10 — air diffusing device 12 — room 14 — ceiling 16 — air chamber 18 — housing 20 — air inlet opening 22 — air feed-through opening 24 — diffuser unit 26 — diffuser wall 28 — diffuser wall 30 — air outlet channel 32 — air outlet 34 — heat responsive means 36 — heat expansion material 38 — valve 40 — compression spring 42 — melting alloy 44 — valve wall 44 — valve wall 46 — torsion spring 48 — valve shaft 50 — heat expansion material wall 52 — pull spring

Claims (1)

ConclusiesConclusions 1. Luchtverspreidingsinrichting voor het verdelen van toegevoerde lucht in een kamer, omvattende een luchtkamer omsloten door een behuizing, waarbij de behuizing is voorzien van ten minste één inlaatopening waardoor lucht kan worden toegevoerd naar de luchtkamer en met een luchtdoorvoeropening waardoor van de lucht van de luchtkamer naar een verspreidereenheid van de luchtverspreidingsinrichting kan stromen, waarbij de verspreidereenheid is gekoppeld aan de behuizing en ten minste een wand omvat die een luchtuitlaatkanaal definieert dat zich uitstrekt van de doorvoeropening naar een luchtuitlaat, met het kenmerk dat de luchtverspreidingsinrichting warmteresponsieve middelen omvat in communicatie voorzien met het luchtuitlaatkanaal en ingericht om te veranderen in reactie op warmte van een ontladingstoestand, waarin lucht vrij door het uitlaatkanaal stroomt van de doorvoeropening naar de luchtuitlaat, in een afdichtingstoestand waarin het uitlaatkanaal is afgedicht.An air diffuser for distributing supplied air in a chamber, comprising an air chamber enclosed by a housing, the housing having at least one inlet opening through which air can be supplied to the air chamber and with an air passage opening through which the air from the air chamber can flow to a diffuser unit of the air diffuser, the diffuser unit being coupled to the housing and comprising at least one wall defining an air outlet channel extending from the passage opening to an air outlet, characterized in that the air diffuser comprises heat-responsive means communicating with the air outlet channel and adapted to change in response to heat from a discharge condition, in which air flows freely through the exhaust channel from the passage opening to the air outlet, into a sealing condition in which the exhaust channel is sealed. 2. Luchtverspreidingsinrichting volgens conclusie 1, met het kenmerk dat de warmteresponsieve middelen zijn voorzien in ten minste één van de ten minste ene wand van de verspreidereenheid die het luchtuitlaatkanaal definieert.Air diffuser according to claim 1, characterized in that the heat-responsive means are provided in at least one of the at least one wall of the diffuser unit defining the air outlet channel. 3. Luchtverspreidingsinrichting volgens conclusie 1 of 2, met het kenmerk dat de warmteresponsieve middelen een klep omvatten in het luchtuitlaatkanaal.Air diffuser according to claim 1 or 2, characterized in that the heat-responsive means comprise a valve in the air outlet channel. 4. Luchtverspreidingsinrichting volgens conclusie 3, met het kenmerk dat de klep roteerbaar gekoppeld is aan een uiteinde van ten minste één van de ten minste ene wand van de verspreidereenheid.Air diffuser according to claim 3, characterized in that the valve is rotatably coupled to an end of at least one of the at least one wall of the diffuser unit. 5. Luchtverspreidingsinrichting volgens conclusie 4, met het kenmerk dat de klep transleerbaar is in het luchtuitlaatkanaal tussen de ontladingstoestand waarin er een opening is tussen de klep en een binnenste oppervlak van hetluchtuitlaatkanaal en de afdichtingstoestand waarin de klep het stroompad van het luchtuitlaatkanaal afdicht.Air diffuser according to claim 4, characterized in that the valve is translatable in the air outlet channel between the discharge state in which there is an opening between the valve and an inner surface of the air outlet channel and the sealing state in which the valve seals the flow path of the air outlet channel. 6. Luchtverspreidingsinrichting volgens één of meer der voorgaande conclusies, met het kenmerk dat de warmteresponsieve middelen een warmte- expansiemateriaal omvat voor het expanderen in het luchtuitlaatkanaal wanneer het warmte-expansiemateriaal is verwarmd tot een temperatuur boven een vooraf bepaalde temperatuurdrempel.Air diffuser according to one or more of the preceding claims, characterized in that the heat-responsive means comprises a heat expansion material for expanding in the air outlet channel when the heat expansion material has been heated to a temperature above a predetermined temperature threshold. 7. Luchtverspreidingsinrichting volgens conclusie 6, met het kenmerk dat het warmte-expansiemateriaal een warmte-expanderend schuim omvat, in het bijzonder een expandeerbaar grafiet, meer in het bijzonder een formulering van polyurethaan en expandeerbaar grafiet.Air diffuser according to claim 6, characterized in that the heat expansion material comprises a heat expanding foam, in particular an expandable graphite, more in particular a formulation of polyurethane and expandable graphite. 8. Luchtverspreidingsinrichting volgens één of meer der voorgaande conclusies, met het kenmerk dat ten minste de behuizing gemaakt is van kunststof.Air diffuser according to one or more of the preceding claims, characterized in that at least the housing is made of plastic. 9. Luchtverspreidingsinrichting volgens één of meer der voorgaande conclusies met het kenmerk dat de behuizing is voorzien van ten minste twee luchtinlaatopeningen voor het toevoeren van lucht van twee luchttoevoerkanalen.Air diffuser according to one or more of the preceding claims, characterized in that the housing is provided with at least two air inlet openings for supplying air from two air supply channels. 10. Luchtverspreidingsinrichting volgens één of meer der voorgaande conclusies met het kenmerk dat de behuizing en de verspreidereenheid corresponderende koppelmiddelen omvatten voor het losneembaar koppelen van de verspreidereenheid met de behuizing.Air diffuser according to one or more of the preceding claims, characterized in that the housing and the diffuser unit comprise corresponding coupling means for detachably coupling the diffuser unit to the housing. 11. Luchtverspreidingsinrichting volgens één of meer der voorgaande conclusies met het kenmerk dat de verspreidereenheid twee tegenoverliggende wanden omvat die het luchtuitlaatkanaal definiëren dat zich uitstrekt van de doorvoeropening naar de luchtuitlaat waarin een eerste wand van de tegenoverliggende wanden van de verspreidereenheid is voorzien van fixatiemiddelen voor het fixeren van de wand aan een plafond in de kamer.Air diffuser according to one or more of the preceding claims, characterized in that the diffuser unit comprises two opposite walls defining the air outlet channel which extends from the passage opening to the air outlet in which a first wall of the opposite walls of the diffuser unit is provided with fixing means for fixing the wall to a ceiling in the room. 12. Luchtverspreidingsinrichting volgens conclusie 11, met het kenmerk dat een tweede wand van de twee tegenoverliggende wanden van de verspreidereenheid is voorzien van de warmteresponsieve middelen.Air diffuser according to claim 11, characterized in that a second wall of the two opposite walls of the diffuser unit is provided with the heat-responsive means. 18. Luchtverspreidingsinrichting volgens conclusie 11 of conclusie 12, met het kenmerk dat de tweede wand losneembaar is gekoppeld met de eerste wand.Air diffuser according to claim 11 or claim 12, characterized in that the second wall is detachably coupled to the first wall.
NL2022149A 2018-12-06 2018-12-06 Air diffusing device NL2022149B1 (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4047475A (en) * 1976-08-02 1977-09-13 Mission Marketing Corporation Of Arizona Ventilating damper assembly
US4397223A (en) * 1981-10-23 1983-08-09 Barber-Colman Company Air distributor with automatically closable damper
DE10113371A1 (en) * 2001-03-20 2002-10-02 Guenter Schulte Fire protection valve for a pipeline comprises an inner valve part made of a material which expands at elevated temperature, especially an intumescent foam
EP1322895A1 (en) * 2000-09-14 2003-07-02 SEAC International B.V. Grille element, intended for placing in a ventilation opening
US20080078841A1 (en) * 2006-09-29 2008-04-03 Unico, Inc. Fire Stop Outlet for Small Duct, High Velocity Air Distribution Systems

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4047475A (en) * 1976-08-02 1977-09-13 Mission Marketing Corporation Of Arizona Ventilating damper assembly
US4397223A (en) * 1981-10-23 1983-08-09 Barber-Colman Company Air distributor with automatically closable damper
EP1322895A1 (en) * 2000-09-14 2003-07-02 SEAC International B.V. Grille element, intended for placing in a ventilation opening
DE10113371A1 (en) * 2001-03-20 2002-10-02 Guenter Schulte Fire protection valve for a pipeline comprises an inner valve part made of a material which expands at elevated temperature, especially an intumescent foam
US20080078841A1 (en) * 2006-09-29 2008-04-03 Unico, Inc. Fire Stop Outlet for Small Duct, High Velocity Air Distribution Systems

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