WO2019175201A1 - Vorrichtung zur aufweitung eines luftvolumenstroms - Google Patents
Vorrichtung zur aufweitung eines luftvolumenstroms Download PDFInfo
- Publication number
- WO2019175201A1 WO2019175201A1 PCT/EP2019/056203 EP2019056203W WO2019175201A1 WO 2019175201 A1 WO2019175201 A1 WO 2019175201A1 EP 2019056203 W EP2019056203 W EP 2019056203W WO 2019175201 A1 WO2019175201 A1 WO 2019175201A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- air
- section
- cross
- inlet
- passage
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F7/00—Ventilation
- F24F7/04—Ventilation with ducting systems, e.g. by double walls; with natural circulation
- F24F7/06—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit
- F24F7/10—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit with air supply, or exhaust, through perforated wall, floor or ceiling
-
- 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 device for expanding an air volume flow, comprising
- a jet generating device having a plurality of passage openings, which together form an air passage cross section
- An equalization device in the form of a sieve, a perforated
- Air distribution over a larger cross-section the supply air is supplied for economic, technical and space reasons via a channel or pipe as small as possible cross section. Accordingly, there is a drastic cross-sectional widening between an air supply line and adjoining air-technical devices or systems, the velocity of the supply air decreasing as the cross-sectional area increases.
- the air outlet cross section is substantially larger than the air inlet cross section, it being assumed in the context of the present application that the air outlet cross section is at least five times, preferably ten times, more preferably fifty times greater than the air inlet cross section. It is understood that the device to individual requirements can be adjusted and the aforementioned size ratios are mentioned only by way of example.
- the flow conditions of the supply air are negatively influenced and turbulences occur.
- For uniform expansion of the volume flow devices are arranged, which can also be referred to as diffusers.
- Cross-sectional extension have a very large design and prove in many places as useless.
- a flow distribution device which comprises a designed as a perforated plate boundary wall.
- the openings in the plate are evenly distributed and each have a protruding into a distribution space lip-shaped deflection. Due to the impact of the supply air on the deflection devices, this is deflected by 90 °, passed into the openings and leaves on the other side of the plate, the device in the room to be ventilated. This is intended to produce a uniform volume flow.
- Partial volume flows of the known device have a very turbulent flow behavior.
- the lips projecting into the distribution space also prove inappropriate with respect to the airflow within the distribution space.
- the protruding lips disturb on the one hand a uniform air flow and on the other hand the air distribution within the distribution space. While sufficient supply air hits the upper lips, the following lips, which are in the "shadow", are hardly supplied with supply air. Overall, the air distribution achieved is not suitable for high demands.
- the document DE 10 201 1 014 393 A1 deals with a device and a method for aerating a room, wherein primary air is supplied, appropriately tempered and delivered to the room. This room air is induced and in an air distribution with the Primary air mixed.
- the known device is not used for widening a
- DE 198 26 566 A1 also describes a device for ventilating a room, in which primary air is mixed with induced room air and released into the room, which is not suitable for widening an air volume flow.
- the above object is achieved in that the inlet regions, viewed from the air distribution space in the direction of the gap, taper trumpet-shaped, conical or stepped, wherein inlet cross sections of the passage openings are located substantially within a common entrance level, wherein a ratio a length of each of a passage opening along a central axis thereof measured to an opening cross-section of the passage opening facing the gap at least 2, preferably at least 3, more preferably at least 5, is.
- the inventive shape of the openings is a very good
- the wall of the same viewed in cross section is rectilinear.
- Inlet area arise arcuate streamlines, so that such inlet areas also referred to as a "rounded inlet.
- the passage openings preferably have a round cross section, and it would also be conceivable to form the passage openings with an oval or angular cross section. It is only important that, viewed from the inlet cross section in the flow direction, the cross section tapers over the height of the inlet region.
- Passage openings ie passage openings with a constant cross section in the inlet area, just is not the case.
- sharp-edged passage openings also a division of the volume flow in a plurality of partial volume flows instead, but the flow conditions are extremely turbulent both within the passages and above the passages in the air distribution, as in addition to the inlet areas in the closed areas
- This "countersink” has a circumferential side surface which encloses an angle between 25 ° and 45 ° with the entrance level. The side surface of the "sinking" can in case of a
- inlet cross sections of the passage openings are located in the
- Air distribution space formed elongated which meant that its length is greater than its width and height.
- the length is at least twice as large
- the length can also be formed much longer.
- the volume flow starting from the inlet cross-section, flows in the longitudinal direction of the air distribution space, wherein the air volume flow is typically deflected by 90 ° by means of the passage openings. Is it an air distribution space, which is arranged for example along a ceiling and his
- the longitudinal direction thus extends horizontally, wherein the air duct has a likewise horizontal and perpendicular to the longitudinal direction of the Lucasverteilraums extending longitudinal axis, the flow direction of the air flow in the air distribution space is also horizontal in
- Air distribution space arranged so that the longitudinal axes of the für Stammsöffnugnen run vertically, the air volume flow is thus deflected by means of the passage openings in the vertical direction.
- the entry plane can be straight, curved or partially oblique.
- the jet generating device according to the invention can evenly divide the volume flow into the air duct independently of the flow velocity, a multiplicity of partial volume flows is uniform over the surface of the
- Beam generating means generated which are directed substantially parallel to a longitudinal axis of the through holes.
- a ratio of a length in each case of a passage opening along a central axis thereof measured to an opening cross section of the passage opening facing the intermediate space is at least 2, preferably at least 3, more preferably at least 5.
- the length of the passage opening according to the invention ensures that the partial flow is impressed particularly well becomes.
- Beam generating device thus serves as a kind of rectifier of the partial volume flows.
- the passage openings can be considered in a longitudinal section in total
- widened inlet area can be defined by a subdivision of the passage opening
- Turbulence can arise.
- the equalization device can be designed, for example, as a sieve, which is folded over on both longitudinal sides in such a way that the equalization device forms a U in cross-section.
- the gap is bounded on three sides by a sieve.
- Beam generating device extending between the inlet cross sections of the
- Passages are located, also substantially within the entrance level.
- the blocking surfaces and the inlet cross sections must again run on a straight line, so that the flow within the air distribution space without disturbing
- the common plane can also be curved or can also be inclined in certain sections.
- the beam generating device is designed as a tube and thus has a cylindrical entry plane. Even with a trained as a pipe
- Beam generating device are the blocking surfaces and the inlet cross sections in
- a development of the invention provides that viewed in a cross section - tangents of the wall of the inlet regions coincide with the entry plane. This results in a smooth transition from the entrance level to the side surface in the inlet region of the channels.
- the inlet cross-section of the passage opening is larger than 2 times the corresponding, the gap facing opening cross-section.
- the aforementioned ratio can also be 2.5 or at most 3.
- the aforementioned ratio for the corresponding diameter Since the largest cross section is located on the air distribution space side facing the passage opening, is achieved by this feature that a volume flow with a cross section corresponding to the largest cross section of
- Passage opening is initiated in selbige. In this way, relatively little supply air impinges on the blocking surfaces of the jet generating device and virtually no turbulence occurs in the air distribution space above the jet generating device.
- the channels In the case of a circular cross-section of the passage openings, the channels have a cylindrical cross section and the inlet regions have a frustoconical cross section.
- a passage cross section of the beam generating device is smaller than 0.5 times the air inlet cross section of the air distribution space. According to the invention, it is also possible that the passage cross section is smaller than 0.4 times, smaller than 0.25 times or even smaller than the air inlet cross section.
- the aforementioned ratio may even be 0.05.
- the section thus forms a constriction of the passage opening, so that the opening cross section of the passage opening facing the intermediate space is smaller than the cross section of the passage opening itself.
- the section acts like a nozzle, which carries out an "alignment" of the partial volume flows.
- the exiting partial volume flows are on the one hand extremely straight and are accelerated, so that the flow conditions are optimized.
- Essential for the function of the section is that the cross section tapers, it is irrelevant whether the reduction of the cross section is sudden or continuous.
- Such an embodiment of the invention is suitable for diffusers to which particularly high demands are made. It has also proven to be advantageous if the cross-section of the portion at the outlet thereof is smaller than 80% of the cross section of the passage opening, if the passage opening - apart from the
- Inlet area - has a constant cross-section.
- An embodiment of the invention provides that the passage openings are formed by pipe sections which are widened at one end. Tubes are available in different diameters and different materials as standard, so that standard products can be used. The tubes must first be cut to the required length and widened accordingly at one end. This method is simple, material-saving and is used in particular for larger passage opening diameters from 20 mm.
- the beam generating device can be made to save material and consequently also with low weight, since the tube body can be positioned spaced from each other according to the individual specifications.
- inlet region walls in the region of the inlet cross sections of the inlet regions are connected to a plate-shaped upper part of the jet generating device, preferably made of metal and welded to the plate-shaped shell, or are integrally formed with the plate-shaped upper part of the beam generating device, preferably as an injection-molded component or die-cast component.
- a plate-shaped upper part of the jet generating device preferably made of metal and welded to the plate-shaped shell, or are integrally formed with the plate-shaped upper part of the beam generating device, preferably as an injection-molded component or die-cast component.
- Beam generating device and the equalization device which is three to ten times the diameter of the passage opening in a range of a constant
- Diameter is. This distance then corresponds to the length of the intermediate space measured in the flow direction. In the intermediate space, the individual partial volume flows can flow freely and the distance determines the so-called "free jet length", which is essential for the energy reduction in the flow.
- the flow from the beam generating device according to the invention are straightened, lose in the interspace of energy and occur evenly in the equalization in which a homogenization of the volume flow takes place.
- the equalization device comprises a sieve, a perforated plate or a porous material, several of which are arranged one behind the other.
- Outflow from the jet generating device can equalize in the intermediate space, so that an excellent uniform distribution in the outlet cross section is achieved. Due to the uniformity at the exit of the volume flow from the device, this can be achieved.
- the device according to the invention is also suitable for acting on a further air distribution space, which is used to supply bulk beds or filter elements. Since the air velocities at the outlet of the device are already very low and without local peaks, the filter bed can again have a significantly larger inflow area. In practice, area ratios of 1:10 can be realized between the air outlet cross-section of the device and the filter bed. Based on the air inlet cross section of the device, this means an area ratio of up to 1: 100 with very small deviations of the
- Air inlet cross section is formed in the intermediate space exclusively from the opening cross sections of the passage openings. Accordingly, no induction of room air can take place in the intermediate space. In this way, it is ensured that the air volume flow passing through the gap flows very evenly and is not subject to any disturbance.
- Homogenization are arranged equidistant from each other, which in turn has a positive effect on the uniform flow of the air flow overall.
- the equalization device has a pressure loss coefficient z noh
- FIG. 1 shows a vertical section through a device according to the invention
- FIG. 2 shows a three-dimensional view of the device from FIG. 1,
- FIG. 3 shows a three-dimensional bottom view of the beam generating device from FIG. 1,
- Figure 4 a three-dimensional view of an alternative embodiment of the invention
- Figure 5 longitudinal sections of three alternative passage openings.
- FIG. 1 shows a device 1 according to the invention for distributing an air volume flow (arrow 2), which is composed of an air distribution chamber 3, a beam generating device 4 with arranged therein through openings 5 and a homogenizing device 6, wherein between the beam generating device 4 and the
- the air distribution chamber 3 is connected via means not shown in Figure 1 with an air duct 8, so that the
- Air flow (arrow 2), starting from the air duct 8 via an air inlet cross section 9 in the air distribution chamber 3 passes.
- the air channel 8 is formed by a tube and has a diameter of 200 mm.
- the device 1 has a cuboid housing 10 with a width of 220 mm, a height of 400 mm and a length of 2 m.
- the beam generating device 4 and the equalization device 6 are arranged so that above the beam generating device 4, a free space remains, which forms the air distribution space 3.
- the air distribution space 3 is therefore limited by walls of the housing 10 and by an upper edge of the beam generating device 4. Both the
- Beam generating device 4 and the equalization device 6 are located below the air channel eighth
- the parts of the device 1 are made of aluminum in the present example.
- the jet generating device 4 has three mutually parallel rows with spaced apart passage openings 5, wherein in FIG. 1 only 2 passage openings 5 can be seen, since the passage openings 5 of the third row are positioned offset and can not be seen in the section according to FIG are. in the
- the cross-section of the passage openings 5 is round, so that a cylindrical channel 11 is formed, wherein an inlet region 12 is formed frusto-conical.
- the passage openings 5 are described below so that a channel facing the intermediate space and an inlet area facing the air distribution space 3 are distinguished.
- the inlet region 12 with a maximum diameter points toward a side of the jet generating device 4 facing the air distribution chamber 3 and defines an inlet cross section 13 in each case.
- the diameter of the channels 11 is 10 mm in each case and the maximum diameter of the inlet regions 12 is 20 mm in each case.
- Flow direction considered length of the channels 11 is 30 mm and the in
- Flow direction considered length of the inlet region 12 is 5 mm. Due to the contraction of the inlet regions 12, which is considered in the flow direction of the air volume flow, to a diameter which corresponds to that of the channels 11, an optimal deflection of the air volume flow into the individual through openings 5 takes place. Also parts of
- Air volume flow which flow outside a projection of the inlet cross sections 13 of the individual passage openings 5 are gently sucked into the inlet region 12, so that in a range of blocking surfaces 15 of the beam generating device 4, which are located between and adjacent to the inlet cross sections 13 of the passage openings 5, no turbulence or eddies.
- a flow direction within the passage openings 5 is exemplified by an arrow 28.
- Beam generating device 4 are in the example shown in a plane.
- a slightly curved formation of a surface of the beam generating device is conceivable, wherein the radius of curvature should be greater than 1 m.
- an embodiment of the beam generating device is conceivable in which the
- Entry cross sections 13 viewed in a longitudinal direction of the device 1, ie in Longitudinal direction of the housing 10 and the air distribution space 3, rectilinear, so that the air flow can flow in a straight line.
- the sum of the cross sections of the passage openings 5 forms an air passage cross section of the beam generating device 4.
- the individual passage openings 5 each have an opening cross section 16 on a side facing the gap 7, which opens into the intermediate space 7.
- the intermediate space 7 is bounded laterally by closed walls, so that an inflow of air into the interspace 7 can take place exclusively via the opening cross sections 16 of the passage openings 5. Inducing ambient air is impossible and not desired.
- the opening cross section 16 is smaller than the cross section of the remaining channel 1 1, so that at the outlet of the partial volume flows from the channels 1 1 is a constriction, which generates a nozzle effect.
- the channels 11 have a portion 14 in which the cross-section is constricted.
- the constriction is continuous over a height of the section 14.
- the section could also be formed by a ring which is attached to the outlet cross-section of the channel.
- the equalization device 6 consists of two mutually spaced, parallel extending screens 17, which are bordered at their two longitudinal sides in each case by a U-shaped strips 18, so that the equalization device 6 in the figure 1 a
- the device 1 according to the invention from FIG. 1 has an elongated, slightly funnel-shaped outlet 19, from which the uniformized air volume flow
- Smoothing device 6 leaves is defined as an air outlet cross-section 22.
- FIG. 2 shows a three-dimensional view of the device 1 according to the invention from FIG. 1, only one half of which is shown and for the sake of better illustration, the representation of a side wall of the housing 10 has been omitted.
- the length L of the device 1 is shown with a line 23, which is dashed at the end, which is intended to illustrate that the device 1 is longer than shown in Figure 2.
- the three rows of passage openings 5 of the beam generating device 4 are clearly visible.
- the cross-sectional widening of the air duct 8 to the air distribution space. 3 is clearly apparent from the figure 2.
- the flow direction is indicated within the half of the air distribution space 3 shown, wherein the flow direction within the not shown half of the air distribution chamber 3 in the opposite direction, since the effluent from the air duct 8 air flow divided on both sides.
- FIG. 3 shows an exemplary construction of the beam generating device 4, of which a three-dimensional bottom view is shown.
- the beam generating device 4 has a plate-shaped upper part 20, which as an injection-molded component in one piece with the individual
- Passage openings 5 is formed.
- the plate-shaped upper part 20 is folded up on both longitudinal sides and thus has two side walls 21.
- the channels 11 do not have a section with constricted cross-section.
- the sections can be dispensed with in applications with less stringent flow characteristics.
- the beam generating device may also be formed by a plate into which corresponding passage openings are introduced.
- FIG. 4 shows a thick-walled tube 25 which surrounds or delimits the air distribution space 3'.
- the air duct for feeding the device is not shown in the figure 4, which may be attached to any point of the tube 25. It is possible in the device to attach the air duct in the radial direction to the tube 25, on the other hand, it is also possible to provide the air passage parallel to the longitudinal axis 26 of the tube 25, so that the air duct at an end face of the tube 25, not shown is appropriate. It is understood that the tube 25 is formed closed at both end faces, to obtain a closed air distribution space 3 '.
- a section 27 of the tube 25 is formed as a beam generating device 4 'by the wall of the tube 25 is provided with through openings 5', which have a radially extending to the tube 25 longitudinal axis.
- the individual passage openings 5 ' are constructed with respect to their cross-section and the division into the inlet region 12, channel 11 and portion 14 of the channel with a smaller cross section analogous to the passage openings 5 of Figure 1.
- At a distance to the tube 25 is on a lower side of a
- Smoothing device 6 arranged in the form of a sieve, wherein the sieve has a curvature adapted to the tube 25, so that the distance is the same at each point.
- the device in such a way that the wall of the tube is circumferentially provided with passage openings and the equalization device is also designed as a tube, so that the air volume flow over the entire circumference of the tube or over the entire circumference of the equalization device in a room becomes.
- FIG. 5 shows longitudinal sections of three different designs
- Inlet area 12 "trumpet-shaped. When in the middle in the figure 5 shown
- Passage opening 5 '" is the inlet region 12'" stepped formed and the right in Fig. 5 illustrated passage opening 5 “" has a funnel-shaped or frusto-conical inlet region 12 "" on.
- the ratio of the largest diameter of the inlet region 12 to the diameter of the channel 11 is 2 in each case.
- passage openings may also be formed as a whole conical, with their cross-section decreases in the direction of the gap.
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2020548711A JP7073519B2 (ja) | 2018-03-14 | 2019-03-13 | 空気体積流を拡散させる装置 |
DE112019000808.0T DE112019000808A5 (de) | 2018-03-14 | 2019-03-13 | Vorrichtung zur Aufweitung eines Luftvolumenstroms |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102018105828.4A DE102018105828A1 (de) | 2018-03-14 | 2018-03-14 | Vorrichtung zur Aufweitung eines Luftvolumenstroms |
DE102018105828.4 | 2018-03-14 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2019175201A1 true WO2019175201A1 (de) | 2019-09-19 |
Family
ID=65818508
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2019/056203 WO2019175201A1 (de) | 2018-03-14 | 2019-03-13 | Vorrichtung zur aufweitung eines luftvolumenstroms |
Country Status (3)
Country | Link |
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JP (1) | JP7073519B2 (de) |
DE (2) | DE102018105828A1 (de) |
WO (1) | WO2019175201A1 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111330519B (zh) * | 2020-03-17 | 2022-07-01 | 唐山海港德泰新材料技术有限公司 | 一种流体分布器、制备方法及其用途 |
Citations (8)
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---|---|---|---|---|
US2996138A (en) * | 1959-07-10 | 1961-08-15 | Robert A D Schwartz | Perforated panel construction |
USRE25948E (en) * | 1962-01-12 | 1965-12-14 | Vented acoustic panel | |
US3726204A (en) * | 1971-06-23 | 1973-04-10 | Svenska Flaektfabriken Ab | Distributing device in plants for the maintenance of a dustfree, bacteriafree zone in a room |
DE2941276A1 (de) | 1978-10-13 | 1980-04-24 | Lind Leif Ingemar | Stroemungsverteilungsvorrichtung und ein mit einer solchen vorrichtung versehenes lufteintrittsgitter |
DE3712297A1 (de) * | 1987-04-10 | 1988-10-27 | Kraftanlagen Ag | Verfahren zur herabsetzung der von schadstoffe emittierenden raumobjekten ausgehenden belastungen in den aufenthalts- und arbeitszonen von personen innerhalb von raeumen |
DE9004474U1 (de) * | 1990-04-19 | 1990-07-26 | Nothdurft, Manfred, 7070 Schwaebisch Gmuend, De | |
DE19826566A1 (de) | 1998-06-15 | 1999-12-23 | Ltg Holding Gmbh | Verfahren und Vorrichtung zum Belüften eines Raumes |
DE102011014393A1 (de) | 2011-03-11 | 2012-09-13 | Ltg Aktiengesellschaft | Verfahren zum Belüften, Heizen und/oder Kühlen eines Raumes sowie entsprechende Vorrichtung |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008038727B4 (de) | 2008-08-12 | 2010-10-28 | Neoperl Gmbh | Sanitärer Wasserauslauf |
CN103335388B (zh) | 2013-07-29 | 2015-08-26 | 北京康孚科技股份有限公司 | 空调设备用均匀出风的置换式送风装置 |
-
2018
- 2018-03-14 DE DE102018105828.4A patent/DE102018105828A1/de not_active Withdrawn
-
2019
- 2019-03-13 DE DE112019000808.0T patent/DE112019000808A5/de active Pending
- 2019-03-13 WO PCT/EP2019/056203 patent/WO2019175201A1/de active Application Filing
- 2019-03-13 JP JP2020548711A patent/JP7073519B2/ja active Active
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2996138A (en) * | 1959-07-10 | 1961-08-15 | Robert A D Schwartz | Perforated panel construction |
USRE25948E (en) * | 1962-01-12 | 1965-12-14 | Vented acoustic panel | |
US3726204A (en) * | 1971-06-23 | 1973-04-10 | Svenska Flaektfabriken Ab | Distributing device in plants for the maintenance of a dustfree, bacteriafree zone in a room |
DE2941276A1 (de) | 1978-10-13 | 1980-04-24 | Lind Leif Ingemar | Stroemungsverteilungsvorrichtung und ein mit einer solchen vorrichtung versehenes lufteintrittsgitter |
DE3712297A1 (de) * | 1987-04-10 | 1988-10-27 | Kraftanlagen Ag | Verfahren zur herabsetzung der von schadstoffe emittierenden raumobjekten ausgehenden belastungen in den aufenthalts- und arbeitszonen von personen innerhalb von raeumen |
DE9004474U1 (de) * | 1990-04-19 | 1990-07-26 | Nothdurft, Manfred, 7070 Schwaebisch Gmuend, De | |
DE19826566A1 (de) | 1998-06-15 | 1999-12-23 | Ltg Holding Gmbh | Verfahren und Vorrichtung zum Belüften eines Raumes |
DE102011014393A1 (de) | 2011-03-11 | 2012-09-13 | Ltg Aktiengesellschaft | Verfahren zum Belüften, Heizen und/oder Kühlen eines Raumes sowie entsprechende Vorrichtung |
Also Published As
Publication number | Publication date |
---|---|
JP7073519B2 (ja) | 2022-05-23 |
DE102018105828A1 (de) | 2019-09-19 |
DE112019000808A5 (de) | 2020-11-05 |
JP2021517632A (ja) | 2021-07-26 |
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