EP2573475A2 - Appareil d'aération conçu comme un appareil à induction ainsi que procédé de fonctionnement de cet appareil - Google Patents
Appareil d'aération conçu comme un appareil à induction ainsi que procédé de fonctionnement de cet appareil Download PDFInfo
- Publication number
- EP2573475A2 EP2573475A2 EP12005778A EP12005778A EP2573475A2 EP 2573475 A2 EP2573475 A2 EP 2573475A2 EP 12005778 A EP12005778 A EP 12005778A EP 12005778 A EP12005778 A EP 12005778A EP 2573475 A2 EP2573475 A2 EP 2573475A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- induction
- air
- nozzles
- group
- nozzle
- 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
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/01—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station in which secondary air is induced by injector action of the primary air
-
- 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
- F24F13/26—Arrangements for air-circulation by means of induction, e.g. by fluid coupling or thermal effect
-
- 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
- F24F2013/0612—Induction nozzles without swirl means
Definitions
- the invention relates to an induction device designed as a ventilation device, with several, with air, in particular with primary air, operated induction nozzles.
- An induction device of the type mentioned is known.
- an induction effect is produced, which causes air, in particular secondary air, to be sucked in and mixed with the air blown out of the induction nozzles.
- This mixed air is then preferably the ventilation of a room of a building or the like. If the air sucked in by the induction effect flows through a heat exchanger and / or the mixed air flows through a heat exchanger, the room can be air-conditioned.
- the known induction device has a plurality of juxtaposed induction nozzles, each of which emits an induction air jet, so that a correspondingly wide zone unfolds an induction effect by the juxtaposition of the induction nozzles, with the result that, for example, a heat exchanger over its entire width for the passage of secondary air can be used.
- the known induction device to induction nozzles with a relatively large cross section. The result is a relatively high sound pressure level during operation of the known ventilation device.
- the invention has for its object to provide an induction device of the type mentioned, which works relatively quiet with high induction power.
- the induction nozzles are grouped and / or arranged in such a way that from the induction nozzles of one group or each of the groups emerging air jets merge to or in each case to only one induction air jet.
- the mentioned common induction air jet is composed of the air jets of a plurality of induction nozzles, these induction nozzles being arranged in a group.
- several groups of each combined induction nozzles are present.
- the individual induction nozzles of the device according to the invention are preferably made smaller, that is, with a smaller cross-section.
- the merged induction air jet of a group of induction nozzles according to the invention provides the same or at least approximately the same induction effect as the known, larger-diameter induction nozzle of the known device.
- the sound pressure level of the grouped induction nozzles is lower, that therefore an induction device is created compared to the known devices with correspondingly comparable parameters of the delivered air volume, especially primary air quantity, and at the same pressure of the air, the Nozzle applied, in particular primary air pressure, the same or about the same induction effect achieved at a lower sound pressure level.
- the induction nozzles of each group have a smaller distance from each other than the distance between adjacent groups.
- the air jets of the induction jets of each group unite in each case only one induction air jet, but the induction air jets of the individual groups preferably do not combine.
- each of the groups has at least two, in particular two to five, preferably three induction nozzles. In this respect, two to five groups, preferably threes are formed.
- the induction nozzles of each group are arranged spatially relative to one another.
- the induction nozzles of each group may lie on a straight line, being positioned from the direction such that the air jets may merge into the induction air jet or, as mentioned above, being arranged spatially relative to each other, for example at three Induction nozzles a triangular arrangement is provided, with the result that then also the fusion of the air jets takes place.
- the latter is also possible if the induction nozzles of a group blow in the same direction or it is alternatively provided that the Ausblaslegien the induction nozzles of a group are different, in particular converge to each other, yet a spatial arrangement of the induction nozzles can be provided.
- the merger point is thus once as far away from the outlet openings of the associated induction nozzles as far as the distance from adjacent, associated induction nozzles, wherein the distance D extends from the center of an induction nozzle to the center of an adjacent induction nozzle.
- a development of the invention provides that the exit angle of the air jet of each induction nozzle of the same group is in the range of 10 ° to 30 °, in particular has a size of 20 °.
- At least one induction nozzle of the induction nozzles of at least one group can be opened or closed.
- the arrangement is preferably such that not all induction nozzles of a group can be opened or closed, but only one or more, but not all, so that a certain induction effect remains and the induction air jet is generated by fusion, that is, at least two induction nozzles of the same Group stay open.
- the mentioned "opening or closing" can also be carried out with intermediate values, ie only a partial opening or partial closing.
- a development of the invention provides that the induction nozzle to be opened or closed is located farther away from a heat exchanger of the induction device than the other induction nozzles of the same group.
- the "other" induction nozzles of the same group mean those that can not be opened or closed. Since - as mentioned - the ventilation device has a heat exchanger which performs a temperature of the sucked by induction air, in particular secondary air, the removal of an induction nozzle to the heat exchanger influence on the heating or cooling result. In this respect, it is advantageous if an induction nozzle to be closed further away from the heat exchanger, since then the other induction nozzles of this group are closer to the heat exchanger accordingly.
- the opening or closing of the induction nozzle takes place by means of a slide, which cooperates with the outlet opening of the induction nozzle.
- This slider can be adjusted automatically, for example by means of a slider drive. Additionally or alternatively, a manual adjustment of the slider is possible.
- the slide covers with a control edge more or less the cross section of the outlet opening or releases it or closes it completely.
- the displacement direction of the slide extends transversely, in particular at right angles, to the outflow direction of the air from the induction nozzle.
- the invention further relates to a method for operating an induction device designed as a ventilation device, in particular as described above, with a plurality of air, in particular with primary air, operated induction nozzles from which air jets emerge, wherein the air jets of several, one group or one group forming induction nozzles are formed such that they merge with each other or to only one induction air jet.
- the preferably uniform and / or preferably equal-sized air jets of induction nozzles of the same group are formed such that the induction effect of the formed Indu Vietnameses Kunststoffstrahls is as large or nearly as large as the induction effect of a fictitious, single, cross-sectional size, a Fiunktluftstrahl Ausblasenden induction nozzle at the same volume flow of induction air jet of the induction nozzles of this group and fictitious air jet and at the same air pressure, in particular primary air pressure, with which the induction nozzles and the fictitious induction nozzle are supplied.
- the preferably uniform and / or preferably equal-sized air jets of induction nozzles of the same group are formed such that the sound pressure level of these induction - when flowing through a certain amount of air delivered, in particular primary air quantity - is smaller or equal to the same size as the sound pressure level of a fictitious, single, cross-sectional sized, a fictitious air blowout induction nozzle at the same amount of delivered air, in particular primary air quantity, and at the same volume flow of induction air jet of the induction nozzles of this group and fictitious air jet and / or the same induction effect of the induction air jet and fictitious air jet.
- FIG. 1 shows - in longitudinal section - an air-technical device 1, which is designed as induction device 2, preferably as a ceiling-mounted device 3. It serves to ventilate and / or air-condition a room of a building or the like.
- the device 1 has a housing 4, in which a downwardly open, so there is not covered by the housing 4 heat exchanger 5 is disposed horizontally. Further, in the housing 4, an air distribution box 6 is arranged, which is air-technically connected to a primary air connection piece 7. Opposite the air distribution box 6 is an air outlet 8. Below the heat exchanger 5 is an air inlet 9.
- the heat exchanger 5 has medium connection pieces 10 and 11 in order to be able to conduct a medium, for example warm water or cold water, through the heat exchanger 5.
- the heat exchanger 5 has a plurality of heat exchanger fins 12, of which - for the sake of simplicity - lying in a small zone heat exchanger fins 12 are excellent, the remaining heat exchanger fins 12 are indicated only in a box.
- FIG. 2 illustrates the ventilation device 1 in view from the rear. It can be seen that the air distribution box 6 extends over the entire width of the device and that the primary air connection piece 7 is preferably designed as a round pipe socket.
- the heat exchanger 5 can in FIG. 2 Recognize heat exchange tubes 13 which are connected to the medium connection pieces 10 and 11.
- FIG. 3 shows that the air outlet 8 extends substantially over the entire width of the ventilation device 1 and can be provided with air guide fins 14.
- the air distribution box 6 has a wall 15 which lies opposite to the air outlet 8 and arranged on the induction nozzles 16, in particular are formed.
- air in particular primary air, which is preferably supplied by an air center of the building or the like via an air distribution network, is introduced into the air distribution box 6 via the primary air connecting piece 7.
- This air hereinafter referred to as primary air, exits from the induction nozzles 16 and produces an induction effect which causes secondary air, in particular room air, to be sucked in through the air inlet 9, which passes through the heat exchanger 5 and is heat-treated and then into a mixing space 17 inside the housing 4 passes, where it is mixed with the leaked from the primary air nozzles 16 primary air, wherein the thus formed mixed air is blown through the air outlet 8 into the room.
- the arrow 18 indicates the primary air, the Arrow 19, the secondary air and the arrow 20, the mixed air or supply air.
- FIG. 4 illustrates that the aforementioned induction nozzles 16 are grouped formed on the air distribution box 6. In each case three, lying on an imaginary triangle primary air nozzles 16 form a group 21. A plurality of groups, in the embodiment thirteen groups 12 are spaced over the length of Lucasverteilkastens 6 to each other, wherein the distance of the individual groups 21 from each other is greater than the distance Induction nozzles 16 within each group 21 from each other.
- the arrangement of the induction nozzles 16 of each group 21 is spatially provided, that is, they are not on a straight line, but they are arranged on an imaginary triangle, with adjacent groups in the triangle configuration alternate by either an induction nozzle 16 above and two induction nozzles 16 at the bottom or two induction nozzles 16 at the top and one induction nozzle 16 at the bottom.
- the invention is of course not on the concrete group of three of the induction nozzles 16 according to FIG. 4 limited, but it can of course be present more or less induction nozzles 16, which are arranged in any pattern to each other.
- FIG. 5 a scale superimposed, showing that the individual air jets 22-starting from the outlet openings 24 of the induction nozzles 16-only have a free jet length of 20 to 30 mm, wherein the individual induction nozzles 16 of the group 21 a distance of about 20 mm, in particular 18 mm, to each other exhibit. The distance of the nozzles from each other is measured from middle nozzle to middle nozzle.
- the invention assumes that, with the same total volume flow and constant admission pressure, different induction nozzle arrangements can be present, namely a few large conventional nozzles (prior art) or many smaller induction nozzles 16, as the latter is the case with the invention.
- many small nozzles are now distributed uniformly over the air distribution box 6, but grouped such that each group 21 of correspondingly small induction nozzles 16 only forms one induction air jet 23, ie their air jets 22 merge this induction air jet 23, wherein the merged induction air jet 23 unfolds about an induction effect, which corresponds to that of a larger, known nozzle.
- the sum of the flow noise of the small induction nozzles 16 of several groups 21 is less than the sum of the flow noise of the large nozzles known from the prior art, the number of which corresponds to the number of groups 21.
- An insertion loss that is to say a reduction of the radiating channel noise, is more favorable in the case of the smaller induction nozzles 16 according to the invention.
- the positive acoustic properties of the smaller, inventive induction nozzles 16 come into action and it also results in a positive induction effect corresponding to the favorable induction effect of large nozzles by the present invention
- the smaller induction nozzles 16 are grouped so that the air jets 22 emerging from them to a common Air jet, namely merge into the mentioned induction air jet 23, so that the effect of this induction air jet 23 corresponds to the effect of a jet of a large nozzle with respect to the induction.
- the geometry and arrangement of the individual induction nozzles 16 according to the invention depends on the nozzle size, the primary pressure, the volume flow and the injector length. However, if the person skilled in the art knows the procedure according to the invention, then it is possible he achieves optimal values by simple experiments. This applies in particular to the resulting from the claims 11 and 12, to be performed method. At nozzle pressures of 100 to 300 Pa, the arrangement of the nozzles, as it has from the FIG. 4 shows, namely a threesome, proven.
- the upper induction nozzles 16 can be opened or closed. Accordingly, according to FIG. 4 either an upper induction nozzle 16 per group 21 or two upper induction nozzles are closed, depending on which group is considered.
- the arrangement is preferably made such that the opening and closing takes place by means of a slide 26 ( FIG. 1 ), which is displaceable with appropriate means and in the representation of FIG. 1 takes an open position.
- the slider 26 can be moved back and forth according to double arrow 27.
- a motor device may be provided or there is a manual displacement given. If the slider 26 is pushed down, it covers the outlet openings 24 of the upper induction nozzles 16 so that no air jets 22 can emerge there.
- the lower row of the induction nozzles 16 not as in FIG. 4 once have one and once two induction nozzles 16 per group 21, but there are always at least two induction nozzles 16 present so that even with covered top row of the induction nozzles 16 can take place an air jet association.
- the induction nozzles 16 of the upper row are not completely closed, but only partially. In such a case it is then also permissible that the lower row in a group 21 only an induction nozzle 16 has.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Jet Pumps And Other Pumps (AREA)
- Ventilation (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102011114335A DE102011114335A1 (de) | 2011-09-21 | 2011-09-21 | Als Induktionsgerät ausgebildetes lufttechnisches Gerät sowie Verfahren zum Betreiben des Geräts |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP2573475A2 true EP2573475A2 (fr) | 2013-03-27 |
| EP2573475A3 EP2573475A3 (fr) | 2014-06-25 |
| EP2573475B1 EP2573475B1 (fr) | 2022-01-26 |
Family
ID=46727073
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP12005778.1A Active EP2573475B1 (fr) | 2011-09-21 | 2012-08-09 | Appareil d'aération conçu comme un appareil à induction ainsi que procédé de fonctionnement de cet appareil |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP2573475B1 (fr) |
| DE (1) | DE102011114335A1 (fr) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015107550A3 (fr) * | 2014-01-16 | 2015-09-03 | Desiccant Rotors International Private Ltd. | Unité de terminal d'air d'apport d'induction présentant un rapport d'induction d'air accru et procédé de fourniture d'un rapport d'induction d'air accru |
| KR20160108513A (ko) * | 2014-01-16 | 2016-09-19 | 데시칸트 로터즈 인터내셔널 프라이빗 리미티드 | 증가된 공기 유도율을 가지는 유도급기 단말유니트 및 증가된 공기 유도율을 제공하는 방법 |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20210302062A1 (en) * | 2020-03-31 | 2021-09-30 | Tecspec, LLC | Induction unit |
| CN112665010B (zh) * | 2021-01-11 | 2024-11-12 | 西安建筑科技大学 | 一种送风装置 |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE590879C (de) * | 1932-01-20 | 1934-01-12 | Lufttechnische G M B H | Einrichtung zur Belueftung von Innenraeumen jeder Art |
| NL96866C (fr) * | 1954-05-26 | |||
| GB1519770A (en) * | 1974-12-02 | 1978-08-02 | Casaire Ltd | Air conditioning |
| DE19826566C2 (de) * | 1998-06-15 | 2003-05-15 | Ltg Holding Gmbh | Verfahren und Vorrichtung zum Belüften eines Raumes |
| DE10010119A1 (de) * | 2000-03-03 | 2001-09-13 | Krantz Tkt Gmbh | Verfahren und Vorrichtung zur Belüftung und Temperierung eines Raumes |
-
2011
- 2011-09-21 DE DE102011114335A patent/DE102011114335A1/de not_active Ceased
-
2012
- 2012-08-09 EP EP12005778.1A patent/EP2573475B1/fr active Active
Non-Patent Citations (1)
| Title |
|---|
| None |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015107550A3 (fr) * | 2014-01-16 | 2015-09-03 | Desiccant Rotors International Private Ltd. | Unité de terminal d'air d'apport d'induction présentant un rapport d'induction d'air accru et procédé de fourniture d'un rapport d'induction d'air accru |
| KR20160108513A (ko) * | 2014-01-16 | 2016-09-19 | 데시칸트 로터즈 인터내셔널 프라이빗 리미티드 | 증가된 공기 유도율을 가지는 유도급기 단말유니트 및 증가된 공기 유도율을 제공하는 방법 |
| US20160334117A1 (en) * | 2014-01-16 | 2016-11-17 | Desiccant Rotors International Private Ltd. | Induction supply air terminal unit with increased air induction ratio, method of providing increased air induction ratio |
| JP2017503999A (ja) * | 2014-01-16 | 2017-02-02 | デシカント・ローターズ・インターナショナル・プライヴェート・リミテッド | 空気誘導率の高い誘導供給空気ターミナルユニット、高い空気誘導率を提供する方法 |
| CN106574790A (zh) * | 2014-01-16 | 2017-04-19 | 干燥转子国际私人有限公司 | 具有增大的空气诱导比的诱导空气供应终端单元以及提供增大的空气诱导比的方法 |
| AU2015207691B2 (en) * | 2014-01-16 | 2018-08-02 | Desiccant Rotors International Private Ltd. | Induction supply air terminal unit with increased air induction ratio, method of providing increased air induction ratio |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2573475A3 (fr) | 2014-06-25 |
| DE102011114335A1 (de) | 2013-03-21 |
| EP2573475B1 (fr) | 2022-01-26 |
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