EP1015823B1 - Perfectionnements aux dispositifs de controle et de regulation d'un flux d'air - Google Patents
Perfectionnements aux dispositifs de controle et de regulation d'un flux d'air Download PDFInfo
- Publication number
- EP1015823B1 EP1015823B1 EP98944022A EP98944022A EP1015823B1 EP 1015823 B1 EP1015823 B1 EP 1015823B1 EP 98944022 A EP98944022 A EP 98944022A EP 98944022 A EP98944022 A EP 98944022A EP 1015823 B1 EP1015823 B1 EP 1015823B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- solid
- revolution
- convergent element
- air
- convergent
- 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.)
- Expired - Lifetime
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
- 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
- F24F13/04—Air-mixing units
-
- 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
- F24F13/082—Grilles, registers or guards
- F24F2013/088—Air-flow straightener
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/8593—Systems
- Y10T137/877—With flow control means for branched passages
- Y10T137/87708—With common valve operator
- Y10T137/87724—For valve having a ball head
Definitions
- the present invention relates to improvements devices intended to regulate temperature of several rooms using an air flow single incident at a given pressure and temperature, it also relates to a device for controlling flow parameters of a forced air flow in a local.
- One solution is to use resources supply, called induction, in which blows through a converging central pipeline a certain air flow, called primary air, from the central which induces an air flow secondary which is extracted from the local, and this is the flow resulting namely that consisting of the primary air flow and the secondary air flow, which is blown into the room. It is thus possible, due to the thermal balance resulting from the mixture of these two air flows, to call to primary air whose extreme temperatures (minimum or maximum) are respectively lower or higher than those acceptable in the room.
- the Applicant has found that if the flow rate of the primary air is varied, the corresponding variation of the air blown into the room is not proportional to this variation but is found below. Thus, for example, when the primary air flow is reduced, the quantity of air blown into the room is reduced to a lesser extent. It has thus been found that, in one embodiment, for a primary air flow passing from 115 m 3 / h to 26 m 3 / h (i.e. a ratio of 4.4), the flow of blown air went from 340 m 3 / h to 230 m 3 / h (a ratio of 1.5).
- the object of the present invention is to provide improvements to air conditioning systems, whether or not they use means of induction, allowing to adjust the primary air flow without cause serious disturbances on the one hand at the level of the flow of air flow and secondly at the noise generated by the installation.
- the subject of the present invention is therefore a temperature regulation device of a room by means of a pulsed air flow therein, comprising a upstream pipeline in communication with means pressurized air supply, which ends with a converging element opening into a downstream pipe in communication with the local, and where a solid substantially of revolution, positionable along the axis longitudinal of the converging element, is arranged at least partially upstream of the outlet orifice thereof, so as to define between the external surface of the solid substantially of revolution and the internal wall of the element converge an annular channel whose importance depends on the position of said solid relative to said wall, characterized in that it comprises, upstream of the converging element, a device air thread straightener.
- the converging element will have a circular cross section.
- the cross section of the element can also be polygonal, and the solid substantially of revolution may have a section right of the same shape in order to spare between these two elements an air stream of substantially constant thickness.
- the sections lines of the converging element and the element substantially of revolution could be of forms different so as to provide a section of minimum output.
- the maximum external diameter of said solid substantially revolution is slightly higher than that of the orifice downstream of the converging element.
- This solid can consist in particular of a sphere or, preferably, a cone or a truncated cone whose upstream part is rounded, even semi-spherical.
- the solid can be kept inside the element converges by an axial rod to the latter.
- This rod can be threaded so as to be screwed into a fixed ring forming a nut, which allows the position axially with respect to the converging element. Keeping in position can be ensured by a lock nut.
- maintaining the ring forming a nut can be provided by a straightening device air streams, the latter can itself be consisting of a heat exchanger to adjust the temperature of the air delivered by the converging element.
- the substantially revolution solid can also be mounted, in an adjustable manner, inside the element converge.
- Such an implementation allows, when this is desirable, to modify, during operation, the axial position of the solid substantially of revolution. It is thus possible, without dismantling the installation, to vary the air flow in significant proportions, possibly going until complete closure of the outlet, which then allows not to treat (heating or cooling) of unused premises.
- the present device is particularly suitable for operate in conjunction with means of induction and to do this the downstream pipeline will include, downstream of the converging element, means of communication with a suction mouth located in the room.
- the present device is also interesting in an installation in which the section report right of the outlet of the converging element on the cross section of the downstream pipeline is between 0.06 and 0.50, the downstream pipe being closed vis-à-vis from the outside in its upstream part, so that it gives birth of a peripheral air flow designated in the this patent by "internal induction".
- FIG. 1 shows a sheath power supply 1 of circular cross section of which the upstream end is in communication with a central air conditioning, not shown in the drawing, and the other end receives by interlocking the upstream end a pipe element 5 whose downstream part 3 takes place in a sheath 6 in communication with the local treat.
- the downstream part 3 of the pipe element 5 has an orifice 7, of transverse axis, which is in communication by a sheath 9 with the room to be treated.
- a converging element 11 is arranged in the element of pipe 5. This element 11 has a cylindrical part 11a followed by a converging portion 11b with a diameter of outlet d.
- the driving element 5 also receives a air thread straightening element 13, which in the present example advantageously consists of an exchanger also allowing to adjust the temperature of the air passing through it, and consequently the air delivered by the converging element 11.
- the device operates in a known manner according to the principles of induction.
- An air flow Q, from from the central unit (called primary air flow) is blown under a pressure P and at a temperature T, in the element rectifier / exchanger 13, then in the converging element there from where it comes out to suction by induction, a certain flow of air q in the room through duct 9, flow which is blown in the room with primary air Q.
- a solid of revolution 15 of shape spherical which is integral with a rod 17 whose end opposite the solid 15 is provided with a thread. This last allows the free end of the rod 17 to be screwed into a threaded sleeve 19 disposed in the center of the rectifier / exchanger 13.
- the longitudinal positioning of the solid 15 is ensured by screwing more or less the part threaded rod 17 in sleeve 19. Maintaining said solid in the chosen position determined is ensured by immobilization means such as in particular a lock nut 22.
- the solid 15a can also consist of a cone whose face upstream is semi-spherical in shape, and the possible stroke of the threaded rod 17 may be sufficient to ensure complete closure of the element outlet converge 11.
- This embodiment of the invention thus allows in particular to stop blowing in unoccupied rooms, which represents an economy at the level operating costs of the installation.
- a room was supplied with the aid of such a device, not shown in the drawing, with an air flow corresponding to the maximum flow rate capable of being supplied by the device and which was 120 m 3 / h. It was found that, for this speed, the noise level reached in the room was 31 dB (A). The element of revolution 15a was then moved so as to partially close the outlet orifice of the converging element 11 and obtain a local flow of 50 m 3 / h. It was then found that the noise level generated in the room was 30 dB (A), a value lower than it was previously.
- the element of revolution 15a was then moved so as to close off almost completely the outlet orifice of the convergent element 11 and the noise level generated by the device in the room was measured, which was then 30, 5 dB (A), i.e. a value below the noise level at full flow.
- the flow reduction devices of the prior art such as those with iris or movable flaps, reach, for identical operating conditions, sound levels of the order of 40 dB ( A) at 45 dB (A).
- such a flow reduction device produces during operation a noise level which, not only does not increase in the fully closed position or partial, but on the contrary decreases.
- the device according to the invention thus appears particularly interesting for making reductions air flow when you want this reduction in flow is carried out under particularly conditions silent.
- hygienic air flow In order to be able to blow in the room a minimum air flow, called hygienic air flow, we can, as shown in Figures 6 and 7, provide in the solid 15 of the longitudinal conduits 16 whose cross section total passage is able to create an air flow primary to ensure said minimum flow in the local.
- the element rectifier / exchanger 13 is provided, in its central part, of two threaded rings 23 into which the threaded rod 17 which supports the solid of revolution 15b.
- a motor 25 rotates a pinion 27 which is in taken with the threaded rod portion 17 between the two rings 23.
- the converging element there has on its periphery a series of undulations 29 which can have various shapes and can increase the amount of induced air.
- these ripples increase the contact surface with the forced air, which improves the induction rate and flow stability.
- the output of the element converging 11 is not completely closed. We can thus provide sufficient outlet area to create a flow primary air for blowing into the room treat a sufficient flow to constitute the air flow hygienic.
- the present invention can also be implemented in an installation where the induction is carried out in a so-called “internal” manner.
- the induction is carried out in a so-called "internal” manner.
- the outlet of the converging element has a section straight s much lower than that of the pipe 3 into which it opens, so as to create at the level of this a return air flow called "internal induction".
- the ratio of the cross section s of the outlet orifice of the converging element 11 to the cross section S of the downstream pipe 3 is between approximately 0.06 and 0.50.
- the present invention is also particularly interesting in more general applications does not using induction phenomena.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Duct Arrangements (AREA)
- Air-Flow Control Members (AREA)
- Flow Control (AREA)
- Fluid-Pressure Circuits (AREA)
- Regulation And Control Of Combustion (AREA)
Description
- diamètre interne de la canalisation aval 3 : 125 mm
- conicité de l'élément convergent 11 : 21°
- diamètre externe de la partie semi-sphérique de l'élément de révolution 15a : 50 mm
- conicité de l'élément de révolution 15a : 21°.
Claims (11)
- Dispositif de régulation en température d'un local au moyen d'un flux d'air pulsé dans celui-ci, comportant une canalisation amont (1) en communication avec des moyens d'alimentation en air sous pression, qui se termine par un élément convergent (11) débouchant dans une canalisation aval (3) en communication avec le local, 7 et où un solide (15,15',15a,15b) sensiblement de révolution, positionnable suivant l'axe longitudinal de l'élément convergent (11), est disposé au moins partiellement en amont de l'orifice de sortie de celui-ci, de façon à définir entre la surface externe du solide sensiblement de révolution (15,15',15a,15b) et la paroi interne de l'élément convergent (11) un canal annulaire dont l'importance dépend de la position dudit solide (15,15',15a,15b) par rapport à ladite paroi, caractérisé en ce qu'il comporte, en amont de l'élément convergent (11), un dispositif (13) redresseur des filets d'air.
- Dispositif suivant la revendication 1 caractérisé en ce que le dispositif redresseur de filets d'air est constitué d'un échangeur thermique (13) permettant d'ajuster la température de l'air délivré par l'élément convergent (11).
- Dispositif suivant l'une des revendications 1 ou 2 caractérisé en ce que l'élément convergent (11) est de section droite circulaire.
- Dispositif suivant la revendication 3 caractérisé en ce que le diamètre externe maximal dudit solide sensiblement de révolution (15,15',15a,15b) est légèrement supérieur à celui de l'orifice de sortie de l'élément convergent (11).
- Dispositif suivant l'une quelconque des revendications précédentes caractérisé en ce que le solide sensiblement de révolution (15) est constitué d'une sphère.
- Dispositif suivant l'une des revendications 1 à 4 caractérisé en ce que le solide sensiblement de révolution (15a, 15b) est constitué d'un volume sensiblement conique ou tronconique dont la partie amont est de forme arrondie, voire semi-sphérique.
- Dispositif suivant l'une quelconque des revendications précédentes caractérisé en ce que le solide sensiblement de révolution (15,15a,15b) est maintenu à l'intérieur de l'élément convergent (11) par une tige (17) axiale à ce dernier.
- Dispositif suivant l'une quelconque des revendications précédentes caractérisé en ce que la face interne de l'élément convergent (11) et/ou la face externe de l'élément sensiblement de révolution (15,15') ont une forme telle qu'ils définissent entre eux une section de sortie minimale.
- Dispositif suivant l'une quelconque des revendications précédentes caractérisé en ce que le solide sensiblement de révolution (15) est traversé par au moins un conduit longitudinal (16) destiné à assurer une section de sortie minimale.
- Dispositif suivant l'une des revendications précédentes caractérisé en ce que le rapport de la section droite (s) de l'orifice de sortie de l'élément convergent (11) sur la section droite (S) de la canalisation aval (3) est compris entre environ 0,06 et 0,50, la canalisation aval (3) étant fermée vis-à-vis de l'extérieur en sa partie amont, de façon qu'elle donne naissance à un flux périphérique dit "induction interne".
- Dispositif suivant l'une quelconque des revendications 1 à 9 caractérisé en ce que la canalisation aval (3) comporte, en aval de l'élément convergent (11), des moyens de communication (7,9) avec une bouche d'aspiration disposée dans le local.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9711689 | 1997-09-19 | ||
FR9711689A FR2768803B1 (fr) | 1997-09-19 | 1997-09-19 | Perfectionnement aux dispositifs de controle et de regulation d'un flux d'air souffle dans un local |
PCT/FR1998/002005 WO1999015839A1 (fr) | 1997-09-19 | 1998-09-18 | Perfectionnements aux dispositifs de controle et de regulation d'un flux d'air |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1015823A1 EP1015823A1 (fr) | 2000-07-05 |
EP1015823B1 true EP1015823B1 (fr) | 2003-08-27 |
Family
ID=9511267
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98944022A Expired - Lifetime EP1015823B1 (fr) | 1997-09-19 | 1998-09-18 | Perfectionnements aux dispositifs de controle et de regulation d'un flux d'air |
Country Status (11)
Country | Link |
---|---|
US (1) | US6290595B1 (fr) |
EP (1) | EP1015823B1 (fr) |
JP (1) | JP2001517770A (fr) |
AT (1) | ATE248331T1 (fr) |
CA (1) | CA2303142C (fr) |
DE (1) | DE69817591T2 (fr) |
ES (1) | ES2205542T3 (fr) |
FR (1) | FR2768803B1 (fr) |
PT (1) | PT1015823E (fr) |
TR (1) | TR200000733T2 (fr) |
WO (1) | WO1999015839A1 (fr) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ES2397017B2 (es) * | 2011-03-24 | 2013-06-25 | Guillermo ALONSO RODRÍGUEZ | Unidad terminal de free-cooling y procedimiento de operación de la misma. |
FI128415B (en) * | 2018-02-08 | 2020-04-30 | Vallox Oy | Exhaust air blower |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1319526A (en) * | 1919-10-21 | Ventilator | ||
US2579507A (en) * | 1949-09-13 | 1951-12-25 | Jet Heet Inc | Warm-air heating system utilizing as the fuel a combustible gas |
FR1235224A (fr) * | 1959-09-17 | 1960-07-01 | Beriab Soc | Bouche de soufflage |
US3058664A (en) * | 1960-12-23 | 1962-10-16 | Honeywell Regulator Co | Air conditioning control apparatus having temperature and pressure control |
US3981326A (en) * | 1974-02-28 | 1976-09-21 | Mitco Corporation | Induction mixing nozzle |
FR2674943B1 (fr) * | 1991-04-08 | 1996-02-09 | Edmond Montaz | Dispositif de regulation en temperature d'un local. |
-
1997
- 1997-09-19 FR FR9711689A patent/FR2768803B1/fr not_active Expired - Fee Related
-
1998
- 1998-09-18 PT PT98944022T patent/PT1015823E/pt unknown
- 1998-09-18 AT AT98944022T patent/ATE248331T1/de active
- 1998-09-18 EP EP98944022A patent/EP1015823B1/fr not_active Expired - Lifetime
- 1998-09-18 TR TR2000/00733T patent/TR200000733T2/xx unknown
- 1998-09-18 US US09/508,887 patent/US6290595B1/en not_active Expired - Lifetime
- 1998-09-18 ES ES98944022T patent/ES2205542T3/es not_active Expired - Lifetime
- 1998-09-18 CA CA002303142A patent/CA2303142C/fr not_active Expired - Fee Related
- 1998-09-18 WO PCT/FR1998/002005 patent/WO1999015839A1/fr active IP Right Grant
- 1998-09-18 DE DE69817591T patent/DE69817591T2/de not_active Expired - Lifetime
- 1998-09-18 JP JP2000513094A patent/JP2001517770A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
FR2768803A1 (fr) | 1999-03-26 |
CA2303142C (fr) | 2007-06-05 |
US6290595B1 (en) | 2001-09-18 |
TR200000733T2 (tr) | 2000-07-21 |
JP2001517770A (ja) | 2001-10-09 |
DE69817591D1 (de) | 2003-10-02 |
ATE248331T1 (de) | 2003-09-15 |
EP1015823A1 (fr) | 2000-07-05 |
WO1999015839A1 (fr) | 1999-04-01 |
FR2768803B1 (fr) | 1999-11-19 |
PT1015823E (pt) | 2003-12-31 |
DE69817591T2 (de) | 2004-07-01 |
ES2205542T3 (es) | 2004-05-01 |
CA2303142A1 (fr) | 1999-04-01 |
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