EP2498016A1 - Dispositif de réglage du débit volumétrique, ainsi que dispositif de ventilation destiné à l'aération, au chauffage et/ou au refroidissement d'une pièce d'un bâtiment - Google Patents

Dispositif de réglage du débit volumétrique, ainsi que dispositif de ventilation destiné à l'aération, au chauffage et/ou au refroidissement d'une pièce d'un bâtiment Download PDF

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Publication number
EP2498016A1
EP2498016A1 EP12000922A EP12000922A EP2498016A1 EP 2498016 A1 EP2498016 A1 EP 2498016A1 EP 12000922 A EP12000922 A EP 12000922A EP 12000922 A EP12000922 A EP 12000922A EP 2498016 A1 EP2498016 A1 EP 2498016A1
Authority
EP
European Patent Office
Prior art keywords
air
cross
flow
volume flow
air passage
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
EP12000922A
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German (de)
English (en)
Other versions
EP2498016B1 (fr
Inventor
Hans-Werner Dr. Roth
Gerd Dr. Schaal
Ralf Wagner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LTG AG
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LTG AG
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Filing date
Publication date
Application filed by LTG AG filed Critical LTG AG
Publication of EP2498016A1 publication Critical patent/EP2498016A1/fr
Application granted granted Critical
Publication of EP2498016B1 publication Critical patent/EP2498016B1/fr
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Anticipated expiration legal-status Critical

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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
    • 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
    • F24F13/12—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of sliding members
    • 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
    • F24F13/068—Outlets for directing or distributing air into rooms or spaces, e.g. ceiling air diffuser formed as perforated walls, ceilings or floors

Definitions

  • the invention relates to a volumetric flow adjusting device for an air-conditioning device for ventilating, heating and / or cooling a room of a building or the like, with at least one air guide element, which has at least one nozzle-shaped air passage and the at least one at least partially with the air passage for adjusting the flow cross-section of the air passage is associated cooperating cross-section adjustment, wherein the air guide and the Querterrorismsverstellelement are arranged displaceable to each other.
  • the invention comprises an air-conditioning device for ventilating, heating and / or cooling a room of a building or the like.
  • Volume flow control devices of the type mentioned are known from the prior art. They are usually used in connection with ventilation devices that serve the tempering or air conditioning of a room of a building. Tempering essentially comprises a change or keeping constant a temperature. When air conditioning is essentially a change or keeping constant the indoor climate, in particular with regard to the humidity and / or the temperature can be achieved. For temperature control is thus a heating and / or cooling device, such as a heat exchanger, and for air conditioning a dehumidifier and / or humidifier necessary.
  • the volume flow adjusting device serves the purpose of setting an air volume flow passing through it to a desired value.
  • air volume flow is used synonymous with the term air mass flow, also in the course of the following remarks.
  • the volumetric flow adjusting device has the air guide element, in which the at least one nozzle-shaped air passage is provided.
  • a nozzle shape is to be understood as meaning a shape of the air passage, which changes its cross-section, as seen in the flow direction, at least in regions.
  • the nozzle-shaped air passage may accordingly be present, for example, as a converging nozzle, but also as a diffuser or as a converging-diverging nozzle.
  • a throttle with a cross-section reduced area is alternatively or additionally providable.
  • the air guide element is assigned the Querterrorismsverstellelement. Moreover, the two elements are displaceable relative to one another in at least one direction. It is irrelevant whether the air guide, the cross-section adjustment or both are displaced to realize the mutual displacement of the two elements. In the following, for reasons of clarity, often only a displacement of the cross-section adjustment element will be discussed. Alternatively, however, it is always possible to provide a displacement of the air-guiding element or of both elements.
  • the Queritessverstellelement cooperates with the air passage to adjust the flow area.
  • flow cross-section is the remaining cross-section of the air passage, through which air through the volume flow control device can get through.
  • provision may be made for the air passage of the cross-section adjustment element not to be blocked in a first position of the air guide element and the cross-section adjustment element, so that the entire cross section of the air passage is available as a flow cross section.
  • provision may be made for the air passage to be obstructed or covered at least in places by the cross-section adjustment element, so that instead of the entire cross-section of the air passage, only part of it can be traversed by air, thus being available as a flow cross-section.
  • a larger air volume flow can pass through the volume flow adjusting device than in the latter case.
  • the cross-section adjustment element is arranged downstream of the air guide element.
  • the cross-section adjustment element is thus located downstream of the air guide element as seen in the flow direction.
  • only a single cross-section adjustment element or a plurality of cross-section adjustment elements can be used for adjusting the flow cross-section of the air passage.
  • only a single air-guiding element, but also a plurality of air-guiding elements can be provided for the volume-flow adjusting device.
  • the arrangement of the Querterrorismsverstellelements downstream of the air guide element has the advantage that the flow noise compared to an upstream arrangement significantly reduced or their formation can be almost completely prevented.
  • the volume flow adjusting device makes it possible to set the throughflow cross section from 0 to 100% relative to the cross section of the air passage. With a corresponding position of the cross-section adjustment element, the entire flow cross-section is therefore blocked or released for passage through. Also, the flow-through noise or air noise decreases when throttling, ie with greater obstruction of the air passage through the cross-section adjustment. In that regard, with the volume flow control device according to the invention an air-technical device can be realized, which also meets high acoustic comfort requirements.
  • Under the displacement according to the invention is a substantially arbitrary position change of the air guide element and cross-section adjustment to understand each other.
  • the displacement can take place in such a way that the air-guiding element and the cross-section adjustment element are always arranged parallel to one another.
  • the displacement can be done as a shift in at least one (constant) spatial direction, but alternatively or additionally as a twist.
  • the air guide element and the cross section adjustment element are rotated relative to each other about an axis of rotation which lies parallel to a flow direction in the air passage or is perpendicular to a surface of the air guide element and / or the cross section adjustment element. Also tilting about a tilt axis is feasible.
  • the tilting axis, about which the tilting takes place is preferably in or parallel to the air guide element and / or cross-sectional adjustment element.
  • the cross-section adjustment element has at least one throughflow opening and / or one edge, wherein the throughflow opening and / or the edge with the air passage in function of the position of the Querterrorismsverstellelements to the air guide fluidly cooperate with the air passage for adjusting the flow cross-section / cooperates.
  • the cross-section adjustment element consists in this respect of a body, which edges bounded by the at least one edge and / or in which the at least one through-flow opening is introduced.
  • the flow-through opening is provided in the cross-section adjustment element or in its body in such a way that, with a corresponding arrangement of the air guide element and the cross-section adjustment element, for example in a first position, air can flow from the air passage into the flow opening and thus flow through the volume flow adjustment device.
  • the air present on the upstream side of the volume flow adjusting device flows into the air passage, passes further through the air passage into the throughflow opening and through this the downstream side of the volume flow control device.
  • the air passage of the cross-section adjustment element or its body is at least partially concealed, so that only part of the air from the air passage can flow into the flow opening.
  • the air passage is completely covered by the Querterrorismsverstellelement or its body, so that the air prevented from flowing through the air passage and the flow cross-section of the air passage is zero.
  • the cross-section adjustment element may have the edge.
  • the edge is arranged in the first position such that the cross-section adjustment element or its body completely releases the air passage in a manner already described.
  • the edge is arranged in the region of the air passage, so that it is at least partially covered by the Querterrorismsverstellelement.
  • the edge is arranged such that the air passage is completely blocked by the Querterrorismsverstellelement or its body. This usually means that the edge is arranged in the third position compared to the first position on the opposite side of the air passage. In this way, the flow opening or the edge with the air passage in function of the position of the Querterrorismsverstellelements to the air guide fluidly cooperates with the air passage for adjusting the flow cross-section.
  • a development of the invention provides that the cross-section adjustment element is displaceable in at least one direction, in particular in two mutually perpendicular directions, transversely to the flow direction of the air present in the air passage.
  • a displacement of the cross-section adjustment element instead of a displacement of the cross-section adjustment element, a displacement of the air-guiding element or both elements is also possible.
  • the displacement takes place transversely, preferably perpendicular to the flow direction mainly present in the air passage, in particular when the flow cross-section is completely released.
  • the displacement perpendicular to the flow direction is equivalent to a displacement of the cross-section adjustment element parallel to the air-guiding element.
  • the cross-section adjustment element is displaceable only in one direction with respect to the air guide element. It is so far formed as a slide. Alternatively, however, a displacement in two mutually perpendicular directions may be provided.
  • the air passage and / or the flow opening in cross-section at least partially circular / oval, stadium-shaped or slot-shaped / is.
  • the air passage or the throughflow opening can have any shape.
  • a stadium is to be understood as meaning a shape in which two edges running parallel to one another in a central region merge into an arcuate or circular manner on both sides of the central region.
  • Under slot-shaped is to be understood a shape which is substantially rectangular, wherein it has different dimensions in two mutually perpendicular directions.
  • the air passage and with him in at least one position of the air guide and Queritessverstellelement corresponding to each other Throughflow opening at least in the region of an outlet opening of the air passage have the same shape and / or the same dimensions.
  • the throughflow opening has larger dimensions in at least one direction than the air passage.
  • the outlet opening is to be understood as the opening of the air passage through which the air exits from it in the direction of the cross-section adjustment element.
  • the cross-section adjustment element follows directly on the outlet opening or at least partially rests on this or its enclosure.
  • a further development of the invention provides that the edge of the cross-section adjustment element cooperating with the air passage and / or the edge of the throughflow opening are designed to be stepped and / or inclined. With the step-shaped edge, a gradual change of the flow cross-section and with the inclined edge a continuous change in a displacement of air guide element and cross-sectional element to each other can be achieved. Accordingly, the cross-section adjustment element can be designed such that different flow cross sections can be achieved over the extent of the flow opening or of the edge interacting with the air passage in a simple manner as a function of the position of the cross section adjustment element.
  • a development of the invention provides that at least one guide device is provided, which the displacement of the Cross-section adjustment element leads in at least one direction.
  • a housing of the volume flow adjusting device may, for example, have a groove in which a region of the cross-section adjustment element engages (or vice versa), so that the cross-section adjustment element is displaceably guided in the desired direction.
  • the guide device may alternatively or additionally comprise a guide element, for example a guide pin, which engages in a guide recess of the cross-section adjustment element.
  • the guide device usually additionally serves to fix the cross-section adjustment element and the air guide element in at least one direction to one another.
  • a development of the invention provides that a, in particular resilient pressing device is provided, which urging the air guide and cross-section adjustment to each other.
  • the cross section adjustment element For the proper functioning of the volumetric flow control device, it is usually necessary for the cross section adjustment element to at least partially cover the air passage or its outlet opening in at least one position.
  • the air guide and the cross-section adjustment are urged towards each other by the pressing device.
  • the pressing device may for example be resilient, so have at least one spring element. Preference is given to two counteracting, above and below the Querterrorismsverstellelement or the air guide element arranged spring elements.
  • the pressing device can be integrated with the guide device be formed so that the guide device additionally serves as a pressing device.
  • a further development of the invention provides that the air passage is projecting with respect to a base surface of the air guide element, wherein the thus formed projection is covered by a cup-like region of the cross-section adjustment element to form a lateral free space permitting the displacement.
  • the air guide element accordingly has the base surface, which is surmounted by the air passage at least in regions, forming the projection.
  • the outlet opening of the air passage is therefore downstream of the base of the air guide.
  • the projection is overlapped by the cup-like region of the cross section adjustment element which represents a depression.
  • At least one through-flow opening of the cross-section adjustment element preferably in the region of a bottom surface of the pot-like region, is provided in the pot-like region or recess.
  • the free space is formed for example by larger in at least a first direction dimensions of the cup-like region or the depression relative to the projection.
  • the projection in cross section is circular and the recess in cross section oval or stadium-shaped, wherein the dimension of the recess in a second, in particular perpendicular to the first stationary direction, the diameter of the projection is substantially equal to or slightly larger, while the dimension of the recess in the first direction is significantly larger than the diameter of the projection.
  • a development of the invention provides that a region of the cross-section adjustment element is displaceably supported on the base surface of the air guide element.
  • the base of the air guide element forms so far at least partially a support area on which the Queritessverstellelement at least partially, but not with its pot-like area supported.
  • a further development of the invention provides that a support region, on which the cross-section adjustment element is supported at least in regions, at least partially encloses an outlet opening of the air passage. It is thus provided that the cross-section adjustment element rests at least partially on the air guide element in the region of the air passage or its outlet opening, in particular if the air passage is projecting with respect to the base surface of the air guide element, ie forms a projection.
  • the support area accordingly also comprises a border of the outlet opening of the air passage, on which a region of the cross-section adjustment element is supported.
  • a development of the invention provides that a plurality of, in particular different dimensions and / or shapes having air passages and / or flow openings are provided such that changes in the flow cross-sections are different from each other for at least a portion of the air passages and / or flow openings via the travel of the cross-section adjustment element. Accordingly, several air passages or flow openings should be present. These are arranged or designed such that their flow cross section changes differently via the travel.
  • the travel path is that path which the cross-section adjustment element travels between a first and a second position with respect to the air guide element.
  • the first position is a first maximum position and the second position is a second maximum position opposite the first position.
  • the different changes in the flow cross sections can be achieved by means of an offset arrangement of the air passages or, additionally or alternatively, by means of different dimensions and / or shapes of the air passages or the throughflow openings.
  • the flow cross sections of at least part of the air passages, in particular of all the air passages, in a specific position of the cross section adjustment element add up to a total flow cross section, which is likewise dependent on the position of the cross section adjustment element.
  • a further development of the invention provides that a plurality of cross-sectional adjustment elements arranged one behind the other and arranged one behind the other in the flow direction are provided downstream of the air-guiding element, which are displaceable in particular in opposite directions.
  • each of the cross-section adjustment elements has at least one through-flow opening and / or one edge which communicates with the air passage as a function of the position of the cross-section adjustment elements to the air guide fluidly with the air passage for adjusting the flow cross-section cooperate.
  • One of the cross-section adjustment elements is arranged directly adjacent to the outlet opening of the air passage, another on the side facing away from the air passage side of a Querterrorismsverstellelements.
  • the flow cross-section of the air passage can thus be adjusted by means of the plurality of cross-section adjustment elements.
  • the Querterrorismsverstelletti can be displaced independently of each other and thus at least partially interact independently of each other with the air passage.
  • the cross-section adjustment element following the flow direction directly in the direction of flow can be set to release the air passage, while the other of the cross-section adjustment elements is arranged such that nevertheless no air can pass through the air passage.
  • the cross-section adjustment elements are displaceable in opposite directions. This has the advantage that the through-flow opening released from the through-flow openings is always centered with respect to the air passage, so that an air jet passing through the opening is located centrally with respect to the air passage.
  • the air guide element and / or the cross-sectional adjustment element at least partially made of plastic or metal, in particular the air guide preferably made of galvanized or coated sheet steel and the cross-section adjustment made of stainless steel.
  • the air guide and the Querterrorismsverstellelement can be made of any material.
  • a plastic or a metal is used.
  • the air guide made of sheet steel and the Querterrorismsverstellelement be made of stainless steel.
  • the air-guiding element and the cross-section adjusting element are each formed of the same material, that is, they consist only of the respectively provided material. Alternatively, however, it may also be provided a merely regional design of the respective material, wherein other areas consist of a different material.
  • the flow-through opening of the cross-section adjustment element can be produced by punching in such a way that a punching degree lies on the side of the cross-section adjustment element facing away from the air guide element. In this way it is prevented that the punching degree obstructs or blocks the displacement of the air guiding element and the cross section adjusting element relative to each other.
  • the invention further relates to an air-conditioning device for ventilating, heating and / or cooling a room of a building or the like, with at least one volumetric flow control device, in particular according to the preceding embodiments, wherein the volumetric flow control device has at least one air guide element, which has at least one nozzle-shaped air passage and the at least a portion of the air passage is at least partially associated with the air passage for adjusting the flow cross section of the air passage Querterrorismsverstellelement, wherein the air guide and the Querterrorismsverstellelement are arranged displaceable to each other. It is provided that the Querterrorismsverstellelement downstream of the Air guide is arranged.
  • the volume flow adjusting device provided in the device can be developed further in accordance with the above explanations, ie it can have all the features already mentioned individually or in combination with one another.
  • a development of the invention provides that the volumetric flow control device is provided fluidically between at least one inflow chamber and at least one outflow chamber. Accordingly, the volume flow adjusting device is arranged between at least two chambers, wherein air can be introduced into the inflow chamber through an inflow opening different from the air passage and out of the outflow chamber through an outflow opening that differs from the air passage.
  • the flow cross-section which is present between the inflow chamber and the outflow chamber, can be adjusted by means of the volume flow adjusting device.
  • the inflow chamber is, for example, an air distribution chamber and the outflow chamber is an air collection chamber.
  • a further development of the invention provides that at least two outflow chambers are provided, which can be fluidly connected to an inflow chamber via the volumetric flow control device, wherein, in particular, air can be introduced from a first of the outflow chambers into the room in a first type of room flow and air can be introduced from a second one of the outflow chambers a second Jardinströmungsart can be introduced into the room.
  • air can be introduced from a first of the outflow chambers into the room in a first type of room flow and air can be introduced from a second one of the outflow chambers a second Jardinströmungsart can be introduced into the room.
  • the space flow types may of course be the same.
  • air can enter the outflow chambers or air collection chambers depending on the setting of the flow cross section. It can be provided that the flow connection between the inflow chamber and at least one of the outflow chambers are completely interruptible. It is particularly advantageous if, by means of the volume flow adjusting device, the air flow from the inflow chamber into each of the outflow chambers can be adjusted, preferably independently of one another.
  • the first or the second Jardinströmungsart is a mixing ventilation, a source ventilation or a mixed-displacement ventilation.
  • the types of space flow can each be configured as desired, for example as one of the types of space flow mentioned. In particular, they can embody the same type of space flow.
  • the first Jardinströmungsart and the second Jardinströmungsart are different.
  • the first Jardinströmungsart is a mixed-source ventilation. This is to be understood as meaning a flow of a mixed air entering the room, which has a not very large impulse.
  • the mixed air is composed for example of the device supplied primary air and induced room air, which mix with each other in the corresponding outflow chamber.
  • the room air is preferably induced by the pulse of the primary air in the outflow chamber, so sucked.
  • By injecting the mixed air into the room further room air is induced, which means that the latter interferes with the injected air jet.
  • in the area of the facade air with not too strong impulse is discharged from the device, so that first by induction room air is mixed, but then the air is slowed down so that it drops to the floor of the room and there in the floor area as Source air reaches the occupied zone of the room, rises on an opposite room wall and flows back in the area of an upper zone of the room in the direction of the facade.
  • the second Jardinströmungsart may for example be a source ventilation.
  • the air is preferably introduced approximately horizontally into the room, in particular in a floor zone of the room.
  • the introduction is preferably carried out starting from the facade of the room with a very small impulse in the floor area, such that adjusts the displacement ventilation.
  • a mixed ventilation air is preferably blown up in the area of a facade of the room upwards, whereby the air flows along the room boundary surfaces, ie first along a wall or window and then along the ceiling of the room and thereby entrains room air by induction, so it for mixing ventilation comes.
  • a space roller forms, that is, the air flowing along the ceiling air flows down a boundary wall and then across the floor back towards the facade.
  • each outflow chamber is assigned at least one Lucas sculptureiass and preferably a corresponding with this flow opening.
  • air can enter the outflow chamber from the inflow chamber via the respective at least one air passage, provided that the respective flow cross-section is adjusted by means of the Querterrorismsverstellelements accordingly.
  • the cross-sectional adjustment element preferably has a corresponding throughflow opening for each of the air passages, so that, for example, a flow connection existing at the same time between the inflow chamber and each of the outflow chambers can be produced.
  • the cross-section adjustment element may also be provided that the cross-section adjustment element has no throughflow opening.
  • the cross-section adjustment element is designed such that its edge can interact sequentially with the air passages of the outflow chambers for adjusting the respective flow cross-section.
  • the flow cross-sections are highly dependent on each other, in particular, the air outlets can only be released or blocked in a particular order. The same applies to the case where the cross-section adjustment element has fewer through-flow openings than outflow chambers and thus air outlets are present.
  • a development of the invention provides that at least one inflow chamber and a corresponding outflow chamber are provided for introducing air into the space and at least one inflow chamber and a corresponding outflow chamber for discharging air from the space, wherein the inflow chambers and the outflow chambers are the same Volume flow adjustment device is assigned.
  • the same volume flow adjusting device is to be understood that the same air guide and the same Querterrorismsverstellelement should be assigned to the inflow and outflow chambers.
  • the inflow chambers as well as the outflow chambers are each fluidically separated from each other, so far there is no direct flow connection.
  • both the introduction and the discharge of the air or the respective air volume flow can be set coupled to each other by means of the volume flow adjusting device.
  • the air volume flow of the air introduced into the room is therefore always in a certain ratio to the air volume flow of air discharged from the room.
  • the FIG. 1 shows a side sectional view of a portion of a volume flow setting device 1 with an air guide 2 and a Querterrorismsverstellelement 3.
  • the air guide 2 has an air passage 4, which is designed nozzle-shaped, that has a in the flow direction (arrow 5) changing cross-section.
  • the direction of flow here is to be understood as meaning the direction which envelopes air passing through the air passage 4 when an outlet opening 6 of the air passage 4 is completely released.
  • the air passage 4 shown here is designed as a converging nozzle, its cross-section thus narrows steadily in the flow direction.
  • the air passage 4 is formed projecting with respect to a base surface 7 of the air guide 2 to form a projection 8.
  • the outlet opening 6 is accordingly spaced, in particular parallel spaced, arranged to the base 7.
  • On the projection 8 is at least a part of a support area 9 is provided.
  • the part of the support area 9 is formed by a border 10 of the outlet opening 6.
  • the cross-section adjustment element 3 is preferably slidably mounted on the support region 9 of the air guide element 2.
  • the cross-section adjustment element 3 is located downstream of the air guide element 2. In this case, it is arranged in particular such that it is supported at least in regions on the support region 9.
  • the cross-section adjustment element 3 is associated with the air guide element 2 and cooperates with the air passage 4 at least in regions for adjusting the flow cross-section of the air passage 4.
  • the air-guiding element 2 and the cross-section adjustment element 3 are arranged displaceable relative to one another or against one another. In the following, however, only a displacement of the cross-section adjustment element 3 will be discussed in favor of a clear representation. However, it can always be alternatively implemented a displacement of the air guide element 2 or a displacement of both elements 2 and 3.
  • the cross-section adjustment element 3 has a throughflow opening 11, which corresponds to the air passage 4.
  • the through-flow opening 11 is introduced into a body 12 of the cross-section adjustment element 3 and passes through it completely in the flow direction.
  • the throughflow opening 11 is cylindrical in the case shown here, that is to say it has a cross section which is constant in the flow direction.
  • a nozzle shape can also be realized here, for example a diverging nozzle with a cross-section increasing in the flow direction.
  • the cross-section adjustment element 3 or the throughflow opening 11 interacts with the air passage 4 for adjusting the flow cross-section.
  • Both the air passage 4 and the flow opening 11 have in the embodiment shown here a circular cross-section. Alternatively, however, oval, stadium-shaped or slit-shaped cross sections are possible.
  • the dimensions of the flow opening 11 perpendicular to the flow direction at least equal to the dimensions of the air passage 4, but in particular greater than these.
  • air in a first position (not illustrated here) of the cross-section adjustment element 3, air can pass unhindered from an inflow side 13 of the volume flow setting device 1 into the air passage 4 of the air guide element 2 and from this in the region of the outlet opening 6 into the flow opening 11 of the cross-section adjustment element 3.
  • the cross-section adjustment element 3 is arranged for this purpose such that it or its body 12 does not cover or block the air passage 4 in the region of the outlet opening 6.
  • the air from the inflow side 13 through the air passage 4 and the flow opening 11 can pass unhindered on a downstream side 14 of the volume flow setting device 1.
  • the air passage 4 or the outlet opening 6 is at least partially, as in the FIG. 1 represented, blocked by the cross-section adjustment element 3 and its body 12.
  • the flow cross section is thus smaller than in the first position, so that the air volume flow, which can get from the inflow side 13 to the downstream side 14, is reduced.
  • the cross-section adjustment element 3 is arranged such that the air passage 4 or the outlet opening 6 is completely covered by the cross-section adjustment element 3 and thus blocked. In this third position, the air can no longer get from the inflow side 13 to the outflow side 14, the flow cross-section is therefore equal to zero.
  • FIG. 2 shows a side sectional view of another embodiment of the volume flow control device 1.
  • the outlet opening 6 minus the material thickness of the enclosure 10 has the same dimensions as the projection 8, it takes in the embodiment the FIG. 2 only a portion of the projection 8 a.
  • the enclosure is compared to the embodiment of FIG. 1 increases, so that a better guidance of the cross-section adjustment element 3 by the support area 9, in particular against tilting, is possible.
  • FIG. 3 shows a third embodiment of the volume flow control device 1.
  • the air passage 4 and the outlet opening 6 are corresponding to the FIG. 1 educated.
  • the cross-section adjustment element 3 has a pot-like region 15, which forms a depression.
  • the throughflow opening 11 is offset in the flow direction (arrow 5) in comparison to a base area 16 of the cross section adjustment element 3.
  • the cross-section adjustment element 3 is now arranged on the air guide element 2 such that the projection 8 formed by the projecting air passage 4 is captured by the cup-shaped region 15 of the cross-section adjustment element 3. In this case, this is preferably provided such that a lateral free space 17 is formed, which allows the displacement of the cross-section adjustment element 3.
  • the throughflow opening 11 is introduced into a bottom 18 of the pot-like region 15, so that the desired flow cross-sections can be adjusted by the displacement.
  • the throughflow opening 11 is provided asymmetrically in the cup-shaped region 15, so that in the first position shown here the air passage 4 or the outlet opening 6 is arranged completely in the region of the flow opening 11 and the flow cross-section of the air passage 4 is completely released.
  • at least partially obstruction of the air passage 4 is present in the second position and in the third position, in particular at maximum displacement of the Quer4.000sverstellelements 3 to the left, the air passage 4 by the Quer4.000sverstellelement 3 or its body 12 completely be locked.
  • the displaceability of the Queritessverstellelements 3 can be realized, for example, that the air passage 4 and the flow opening 11 in cross-section circular and the cup-shaped region 15 are oval or stadium-shaped.
  • the dimensions of the pot-like region 15 in the direction of movement of the cross-section adjustment element 3 are greater than perpendicular thereto.
  • the dimensions of the cup-shaped region 15 perpendicular to the direction of movement of the cross-section adjustment element 3 substantially correspond to that of the projection 8, so that a longitudinal guide of the cross-section adjustment element 3 is realized.
  • FIG. 4 shows a plan view of the air guide 2 and the Quer4.000sverstellelement 3, wherein only the contours of the air passage 4 and the flow opening 11 are shown. It can be seen that the air passage 4 and its outlet opening 6 and the flow opening 11 are circular in cross section. In this case, the air passage 4 has an outer diameter d, wherein this comprises both the outlet opening 6 and the enclosure 10. The flow opening 11 points against it a diameter D, where D is greater than d.
  • FIG. 5 shows a plan view of the air guide element 2 and the Querterrorismsverstellelements 3 in an embodiment with a plurality of air passages 4, 4 ', 4 ", 20, 20' and 20” and flow openings 11, 11 ', 11 ", 21, 21' and 21".
  • the air outlets 4, 4 'and 4 "cooperate respectively with the flow openings 11, 11' and 11” and the air passages 20, 20 'and 20 “with the flow openings 21, 21' and 21” for adjusting the respective flow cross section.
  • the displacement of the cross-section adjustment element 3 is provided in the direction of the double arrow 19.
  • the air guiding element 2 and the cross section adjusting element 3 can be designed in accordance with the embodiments described above.
  • the changes in the flow cross-sections for the air passages and flow openings of the first row 22 and the second row 23 are the same, but different between the rows 22 and 23.
  • a different course of the flow cross-section then results for the air passages and the flow openings of the first row 22 than for the second row 23.
  • FIG. 7 shows an alternative embodiment of the air guide element 2 and the Querterrorismsverstellelements 3 of FIG. 5 ,
  • a third row 26 with air passages 27, 27 'and 27 "and throughflow openings 28, 28' and 28" is provided.
  • FIG. 8 shows a schematic plan view of an air guide element 2 and a Querterrorismsverstellelement 3 with a flow opening 11 in a first form.
  • the through-flow opening 11 is basically substantially rectangular, but has an oblique wall section 29, which is angled relative to an adjacent edge section or the direction of displacement of the cross-section adjustment element 3 (double arrow 19) by the angle ⁇ .
  • ⁇ 90 ° results in a cross-sectionally substantially rectangular flow opening 11, wherein in the embodiment shown here, the edges extending in the flow direction (ie out of the plane or in this in) are rounded.
  • the FIG. 9 shows the flow opening 11 of the FIG. 8 in an alternative, second form.
  • the throughflow opening 11 has a plurality of oblique edge portions 29, which are each angled at the angle ⁇ with respect to the displacement direction of the Querterrorismsverstellelements 3. Between the edge portions 29 are each edge portions 30 which extend substantially parallel to the displacement direction. The result is thus a step-shaped design of the edge of the throughflow opening 11. Only when a slanted edge section 29 interacts with the air passage 4 or the outlet opening 6 does the flow cross section change.
  • edge sections 30 and none of the edge sections 29 are located in the region of the air passage 4, the flow cross-section will not change even with a displacement of the cross-section adjustment element 3, so that it remains constant until one of the edge sections 29 again interacts with the air passage 4 .
  • the edge portions 29 may each be arranged at the same angle ⁇ , but also each have a different angle.
  • the extent of the edge portions 29 perpendicular to the displacement direction of the Querterrorismsverstellelements 3 is in the embodiment shown here in each case the same.
  • different lengths can be chosen so that the edge portions 30 are disposed at other positions transverse to the direction of displacement.
  • the edge sections 30 may also be angled, for example with an angle ⁇ different from ⁇ .
  • the FIG. 10 shows a side sectional view of a portion of the Volumenstromstell thanks, wherein a guide device 31 is shown.
  • the guide device 31 serves to guide the displacement of the Querterrorismsverstellelements 3 in at least one direction.
  • the guide device 31 here consists of a guide element 32, more precisely a guide pin 33, which passes through a guide recess 34 of the cross section adjustment element 3.
  • the guide pin 33 is attached with its one side to the air guide element 2, for example, it has at this end a thread, with which it engages in a provided in the air guide element 2 mating thread.
  • the head 35 has, in its direction perpendicular to the direction of displacement of the Queritessverstellelements 3 (double arrow 19) standing direction dimensions which are greater than that of the guide recess 34.
  • the guide recess 34 In the displacement direction, the guide recess 34 is larger than a shaft 36 of the guide pin to the displacement of the Allow cross-section adjustment element 3.
  • the cooperation of the shaft 36 and the guide recess 34 prevents displacement of the cross-section adjustment element 3 perpendicular to the displacement direction indicated by the double arrow 19.
  • the cross-section adjustment element 3 is accordingly fixed in two directions relative to the air guide element 2, so that only a movement in the direction of displacement is possible.
  • the head 35 can be arranged in this way be that he pushes the cross-section adjustment element 3 in the direction of the air guide element 2.
  • this pressing on one another can alternatively also be realized by the influence of gravity on the cross-section adjustment element 3, in that the head 35 is arranged at a specific distance greater than zero by the cross-section adjustment element 3.
  • FIG. 11 shows a side sectional view of a portion of the volume flow control device 1, wherein the cross-section adjustment element 3 is connected via a pressing device 37 with the air guide element 2.
  • the pressing device 37 is resiliently constructed and has in the illustrated embodiment, two springs 38 and 38 ', wherein the spring 38 below the Quer4.000sverstellelents 3 between this and the air guide 2 and the spring 38' above the Quer4.000sverstellelements 3 between this and the head 35th the - formed integrated with the pressing device 37 - guide means 31 is arranged. Between the springs 38 and 38 'and the Querterrorismsverstellelement 3 can each be provided an intermediate washer 39.
  • the pressing device 37 allows movement of the cross-section adjustment element 3 away from the air guide element 2 and towards it, as indicated by the double arrow 40.
  • the springs 38 and 38 ' provide for resetting the Querterrorismsverstellelements 3 in its initial position, so that the Quer4.000sverstellelement 3 always occupies substantially the same vertical position with respect to the air guide element 2.
  • the spring 38 and 38 ' are counteracting. They are preferably matched to one another such that the cross-section adjustment element 3 always in the direction the air guide 2 is urged, so that the air passage 4 is blocked by the Querterrorismsverstellelements 3 with a corresponding displacement.
  • FIG. 12 shows a side sectional view of the volume flow control device 1, wherein the air guide element 2, the Querterrorismsverstellelement 3 and a further Querterrorismsverstellelement 41 are shown.
  • the further cross-section adjustment element 41 is arranged downstream (arrow 5) of the cross-section adjustment element 3 and the air guide element 2.
  • the cross-section adjustment element 3 can be displaced in accordance with the double arrow 19 and the cross-section adjustment element 41 in accordance with the double arrow 42.
  • the cross-section adjustment element 41 is essentially constructed identically to the cross-section adjustment element 3 and, like this, has a throughflow opening 43 which corresponds to the throughflow opening 11 and the air passage 4 with a corresponding arrangement of the cross section adjustment elements 3 and 41.
  • the cross section adjustment element 3 and the cross section adjustment element 41 are displaceable in opposite directions, that is, if the cross section adjustment element 3 is displaced in one direction, the cross section adjustment element 41 is displaced in the other direction opposite one direction, and vice versa.
  • a flow cross-section of the air passage 4 can be achieved, which is always central to this.
  • the flowing through the air passage 4 and the flow openings 11 and 43 Accordingly, in such an embodiment, air flow is always centered with respect to the air passage 4 or the outlet opening 6.
  • FIG. 13 shows a schematic view of a device 44 for ventilating, heating and / or cooling a room of a building or the like, in a first embodiment.
  • the volume flow adjusting device 1 is provided between an inflow chamber 45 and an outflow chamber 46.
  • the inflow chamber 45 has at least one inflow opening 47, through which air can enter the inflow chamber 45 (arrow 48), while the outflow chamber has at least one outflow opening 49, via which air from the outflow chamber 46 can enter the room.
  • a flow connection between the inflow chamber 45 and the outflow chamber can be adjusted by means of the volume flow setting device 1.
  • the volume flow control device for example, an actuator and / or a control and / or regulating device.
  • the volumetric flow control device 1 is constructed in the manner described above and has air outlets 4, 4 ', 4 "and 4'", which are nozzle-shaped.
  • the volume flow adjusting device 1 also has the cross-section adjustment element 3, which cooperates with the air passages 4, 4 ', 4 "and 4'” for setting the respective flow cross section and thus a total flow cross section.
  • a significantly larger number of air outlets is provided as shown here. For reasons of clarity, however, only a small number of air outlets displayed. The flow openings are not shown for reasons of clarity.
  • the cross-section adjustment element 3 is displaceable, as indicated by the double arrow 19.
  • the air outlets 4, 4 ', 4 "and 4'” establish a flow connection between the inflow chamber 45 and the outflow chamber 46, which can be locked or at least partially released by corresponding displacement of the cross-section adjustment element 3.
  • the flow connection between inflow chamber 45 and outflow chamber 46 can be produced exclusively via the air outlets 4, 4 ', 4 "and 4'". They are otherwise fluidically separated from each other.
  • primary air is introduced into the inflow chamber 45 via the inflow opening 47 -in the direction of the arrow 48.
  • the inflow chamber 45 is so far on the upstream side of the volume flow control device 1 and the outflow chamber 46 on the downstream side.
  • the inflow chamber 45 may be formed as an air distribution chamber and the outflow chamber 46 as an air collection chamber of the device 44.
  • the primary air is preferably supplied to the device 44 from a primary air source. This is, for example, a central, a room having the building associated primary air source, from which the device 44 or more of the devices 44 are supplied centrally.
  • FIG. 14 shows a schematic view of the device 44 in a second embodiment.
  • a flow connection between the inflow chamber 45 and the outflow chamber 46 and the air passages 4 "and 4 '" a flow connection between the inflow chamber 45 and the outflow chamber 46'. can be produced as a function of the position of the cross-section adjustment element 3.
  • the air introduced into the inflow chamber 45 through the inflow opening 47 in the direction of the arrow 48 can accordingly be distributed to the outflow chambers 46 and 46 'by corresponding displacement of the cross-section adjustment element 3.
  • the volume flow adjusting device 1 can be set such that only a flow connection between the inflow chamber 45 and the outflow chamber 46, but no flow connection to the outflow chamber 46 'or vice versa is present.
  • any intermediate positions are adjustable by means of the volume flow control device 1, so that a certain proportion of the introduced into the inflow chamber 45 air enters the outflow chamber 46 and another certain proportion in the outflow chamber 46 'passes. From the outflow chambers 46 and 46 ', the air then passes through the outflow openings 49 and 49' in the room. It is provided in particular that the air from the outflow chamber 46 in a first Jardinströmungsart and from the outflow chamber 46 'in a second Jardinströmungsart into the room can be introduced. The second Jardinströmungsart is preferably different from the first Kunststoffströmungsart.
  • FIG. 15 shows a schematic view of a third embodiment of the device 44. Again, only one inflow chamber 45, but two outflow chambers 46 and 46 'are provided. While the outflow chambers 46 and 46 'in the in the FIG. 14 illustrated embodiment are arranged on the same side of the inflow chamber 45, they should now be present on different sides. It is provided that the outflow chambers 46 and 46 'are present on adjoining side surfaces of the inflow chamber 45. Alternatively, it could also be provided that the outflow chambers 46 and 46 'are arranged on opposite and non-contiguous sides of the inflow chamber 45. Otherwise corresponds to the embodiment shown here in the FIG. 14 so that reference is made to the above statements. In the embodiment shown here, the cross-section adjustment element 3 is displaced into or out of the plane of the drawing.
  • FIG. 16 shows a schematic view of the device 44 in a fourth embodiment.
  • This embodiment essentially has the in the FIG. 13 illustrated embodiment of the device 44 twice.
  • the inflow chamber 45 via the air passages 4, 4 ', 4 "and 4'” with the outflow chamber 46 connectable.
  • the inflow chamber 45 can be supplied with air via the inflow opening 47 in the direction of the arrow 48, while it passes from the outflow chamber through the outflow opening 49 into the room.
  • the device 44 has a further inflow chamber 45 'with an inflow opening 47' and the outflow chamber 46 'with the outflow opening 49'. Through this, air can enter Direction of arrow 50 are delivered.
  • the flow connection between the inflow chamber 45 'and the outflow chamber 46' can be produced via air outlets 20, 20 ', 20 "and 20'".
  • the inflow chamber 45 and the outflow chamber 46 serve to introduce air into the room and the inflow chamber 45 'and the outflow chamber 46' to the discharge from the room.
  • the inflow chambers 45 and 45 'and the outflow chambers 46 and 46' are each assigned the same volume flow setting device 1. Accordingly, there is only a single cross-section adjustment element 3, which cooperates with both the air passages 4, 4 ', 4 "and 4'” and with the air passages 20, 20 ', 20 “and 20'” for setting the corresponding flow cross-section.
  • the inflow chambers 45 and 45 'and the outflow chambers 46 and 46' are each fluidically separated from each other, so there is no direct flow connection between them.
  • the introduction of the air in the room to the discharge of air from the room or the respective air flow can be coupled together.
  • FIG. 17 shows a schematic representation of a first variant of the second embodiment of the device 44.
  • the volume flow control device 1 introduced into the outflow chamber 46 air (arrow 51) induces room air along the arrow 52, so that in the outflow 46 mixed air, consisting of the introduced through the inlet opening 47 primary air and the induced space or secondary air.
  • the mixed air is then discharged through the discharge opening 49 into the room, so that a mixing ventilation is realized.
  • a heating and / or cooling device 53 in particular a heat exchanger, may be provided in order to temper the room air before it enters the outflow chamber 46.
  • the outflow chamber 46 ' forms a bypass for primary air, through which it can enter directly into the room without inducing secondary air in the outflow chamber 46. In this way, the room air velocity can be reduced.
  • the volume flow adjusting device 1 as already described above, the distribution of the air can be adjusted to the outflow chambers 46 and 46 ', so that in this way an influence on the room air velocity is easily possible.
  • the FIG. 18 shows a second variant of the second embodiment of the device 44.
  • the structure is similar to the first variant, so that reference is made to the above statements.
  • the outflow chamber 46 ' is not used as a bypass for primary air, as is the case in the first variant.
  • the outflow opening 49 ' is arranged on the device 44 such that source air can be introduced into the space via it.
  • the air is usually introduced approximately horizontally into the room, especially in a floor zone of the room.
  • the outflow chamber 46 is via the air passages 4 and 4 ' and the outflow chamber 46 'via the air passage 4 "with the inflow chamber 45 connectable.
  • FIG. 19 shows a diagram in which flow cross sections are reproduced over the travel of the Queritesverstellelements 3 of the device 44 according to the above-described second variant of the second embodiment.
  • a course 54 is assigned to the air passage 4
  • a course 55 to the air passage 4 'and a course 56 to the air passage 4 ".It is shown that lower flow cross sections can be set by means of the cross section adjustment element 3 for the air passages 4 and 4' than for the air passage 4 ".
  • the source ventilation through the outflow chamber 46 ' Upon further displacement of the Queritessverstellelements 3 occurs in addition to the induction ventilation through the outflow chamber 46, the source ventilation through the outflow chamber 46 ', for the latter, the air flow rate is significantly higher than for the mixing ventilation. For s 2 ⁇ s ⁇ s max , additional primary air is introduced into the outflow chamber 46 as s increases.
  • FIG. 20 shows a schematic representation of a first installation variant of the device 44.
  • This comprises the inflow chamber 45 and the outflow chamber 46, wherein the former is connected to the inflow opening 47 at a first wall connection 57.
  • This serves for the supply of primary air through the inflow opening 47 into the inflow chamber 45. From this, the air can pass through the volume flow setting device 1 in the space indicated schematically here. Conversely, air can escape from the room through the inlet opening 47 'in the outflow chamber 46 and from this through the discharge opening 49' in a second wall connection 58 pass.
  • the inflow chamber 45 thus serves to introduce air into the room and the outflow chamber 46 to expel air from the room.
  • the inflow chamber 45 and the outflow chamber 46 are assigned the same volume flow setting device 1 or the same cross section adjustment element 3.
  • the Querterrorismsverstellelement 3 is designed as a screen, so represents a visible from the room surface of the device 44.
  • a displacement of the Queritesverstellelements 3 takes place in this installation variant in the plane or out of her.
  • the air volume flows of the air flowing into or out of the space can be adjusted in a targeted manner.
  • FIG. 21 shows a schematic representation of a second installation variant of the device 44.
  • This is basically similar to the first installation variant, so reference is made to the above statements.
  • the inflow chamber 45 and the non-visible because lying behind her outflow chamber 46 are integrated into the wall and connected to the air ports 57 and 58.
  • a single volume flow setting device 1 or a single Querterrorismsverstellelement 3 is provided, which is also at least partially integrated into the wall and the air passages 4 and 4 'of the inflow chamber 45 and the air passages of the outflow chamber not shown overlaps.
  • the in the Figures 20 and 21 shown installation variants of the device 44 have the advantage that only a small space requirement for adjusting the air flow, ie for the volume flow control device 1, is required. In addition, no throttle noises, in particular because the throttle effect is achieved by means of the volume flow control device 1 and no additional throttle device within the device 44 is necessary.
  • a further advantage is that with only one volume flow control device 1 or a single Queritessverstellelement 3 two airways, namely in the room and out of the room, are adjustable. Also, the volume flow, which can pass through the volume flow control device 1, very flexible adjustable and the volume flow control device 1 for almost any air flow can be interpreted.
  • FIG. 22 1 shows an embodiment of the device 44 in which a plurality of sound damping elements 59, 59 'and 59 "are provided in the outflow chamber 46. However, at least a sound damping element 59 is provided in the outflow chamber 46.
  • the sound damping elements 59, 59' and 59" are preferably of the crank type educated.
  • the sound damping elements 59, 59 'and 59 essentially have a box-shaped outline and are formed with a width t and with a spacing s, in particular perpendicular to the flow direction (indicated by Arrow 60), spaced from each other.
  • the volume flow setting device 1 which is provided here between the inflow chamber 45 and the outflow chamber 46, analogous to the in FIG. 12 shown embodiment, in the flow direction one behind the other arranged Querterrorismsverstellieri 3, which are displaced in opposite directions, as indicated by the double arrows 19 and 42.
  • the flow channels 63, 63 ', 63 "and 63'” always flows through centrally, if the flow cross-section of the air outlets 4, 4 ', 4 "and 4'” at least partially by the Querterrorismsverstellelementen 3 and 41 (not shown separately ) are released.
  • FIG. 23 shows a further embodiment of the device 44.
  • an alternative arrangement of the volume flow adjusting device 1 between the inflow chamber 45 and the outflow chamber 46 is shown schematically. Due to the diagonal arrangement of the volume flow adjusting device 1, that is, both the air guide element 2 and the Querterrorismsverstellelements 3, a larger area available for the flow is achieved. It can thus be provided, for example, a larger number of air passages 4 (shown here only by way of example). In this way, the maximum air volume flow that can pass through at most by the volume flow adjusting device 1, compared to a conventional arrangement (perpendicular to the direction of flow (arrow 64)) can be increased. Overall, therefore, the pressure loss of the volume flow adjusting device 1 can be reduced in the position of the Queritesverstellelements 3, in which this the air passages 4 completely free.
  • FIG. 24 shows an embodiment of the device 44, in which at least one air guide element 65 is provided in the outflow chamber 46.
  • the air guide element 65 is preferably arranged obliquely in the outflow chamber 46, so that the air flow control device 1 flowing air is urged in the direction of the outflow opening 49.
  • the outflow opening 49 is provided laterally at the outflow chamber 46, in particular in such a way that the air flowing through the volume flow setting device 1 is not directed directly onto the outflow opening 49. In this way, no blowing of elements of an air outlet 66 takes place with the air. Only through the air guide element 45 is the air in the direction of the air outlet 66 or the outflow opening 49 crowded.
  • the air outlet 66 is preferably additionally spaced in the flow direction (arrow 67) from the volume flow adjusting device 1. In this way, secondary air is sucked out of the space through the outflow opening 49 into the outflow chamber 46 by the induction effect by the air flowing at least partially tangentially past the air outlet 66.
  • FIG. 25 shows an embodiment of the device 44, in which two inflow chambers 45 and 45 'via the same volume flow adjusting device 1 with an outflow chamber 46 are connected. Both inflow chambers 45 and 45 'serve to discharge air out of the space, which can then flow out of the outflow opening after passing through the volume flow setting device 1. In this way, an adjustment of the exhaust air from the room can be done.
  • the air outlets 4 are executed in the embodiment presented here for reasons of acoustics tapering down.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Air-Flow Control Members (AREA)
EP12000922.0A 2011-03-11 2012-02-14 Dispositif de ventilation destiné à l'aération, au chauffage et/ou au refroidissement d'une pièce d'un bâtiment Active EP2498016B1 (fr)

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DE102011014392A DE102011014392A1 (de) 2011-03-11 2011-03-11 Volumenstromstelleinrichtung sowie lufttechnische Vorrichtung zum Belüften, Heizen und/oder Kühlen eines Raumes eines Gebäudes

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WO2022238504A1 (fr) 2021-05-12 2022-11-17 Inventiair Ab Système et procédé de surveillance et d'analyse d'un changement de variables sonores dans une unité fermée sous pression

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US11299009B2 (en) 2020-03-10 2022-04-12 Denso International America, Inc. Vehicle HVAC system with modular door design

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US5477699A (en) * 1994-11-21 1995-12-26 Whirlpool Corporation Evaporator fan control for a refrigerator
DE29919753U1 (de) * 1999-11-10 2000-03-02 LTG Aktiengesellschaft, 70435 Stuttgart Luftauslass
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Publication number Priority date Publication date Assignee Title
SE1850226A1 (en) * 2018-02-28 2019-08-29 Inventiair Ab A device for regulating an airflow
WO2019168460A1 (fr) * 2018-02-28 2019-09-06 Inventiair Ab Dispositif de régulation d'un écoulement d'air
SE544713C2 (en) * 2018-02-28 2022-10-25 Inventiair Ab A device for regulating an airflow
WO2022238504A1 (fr) 2021-05-12 2022-11-17 Inventiair Ab Système et procédé de surveillance et d'analyse d'un changement de variables sonores dans une unité fermée sous pression
WO2022238501A1 (fr) 2021-05-12 2022-11-17 Inventiair Ab Système et procédé de surveillance et d'analyse d'un changement de variables sonores dans une unité sous pression fermée

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DE102011014392A1 (de) 2012-09-13

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