EP1548373B1 - Induction diffuser for air conditioning installations - Google Patents

Induction diffuser for air conditioning installations Download PDF

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Publication number
EP1548373B1
EP1548373B1 EP04380267.7A EP04380267A EP1548373B1 EP 1548373 B1 EP1548373 B1 EP 1548373B1 EP 04380267 A EP04380267 A EP 04380267A EP 1548373 B1 EP1548373 B1 EP 1548373B1
Authority
EP
European Patent Office
Prior art keywords
casing
sub
diffuser
smaller
front plate
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.)
Active
Application number
EP04380267.7A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1548373A3 (en
EP1548373A2 (en
Inventor
Jorge Gomez Sanchez
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.)
Koolair SA
Original Assignee
Koolair SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Koolair SA filed Critical Koolair SA
Publication of EP1548373A2 publication Critical patent/EP1548373A2/en
Publication of EP1548373A3 publication Critical patent/EP1548373A3/en
Application granted granted Critical
Publication of EP1548373B1 publication Critical patent/EP1548373B1/en
Active legal-status Critical Current
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
    • 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
    • F24F13/02—Ducting arrangements
    • F24F13/06—Outlets for directing or distributing air into rooms or spaces, e.g. ceiling air diffuser
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/02—Ducting arrangements
    • F24F13/06—Outlets for directing or distributing air into rooms or spaces, e.g. ceiling air diffuser
    • F24F2013/0616—Outlets that have intake openings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2221/00—Details or features not otherwise provided for
    • F24F2221/14—Details or features not otherwise provided for mounted on the ceiling

Definitions

  • the invention herein refers to an induction diffuser for air conditioning installations, which contributes essential novel characteristics and substantial advantages in relation to the means known and used for the same purpose in the current stage of technical advancement.
  • the invention proposes the development of an internal induction type of air diffuser, like those used as outlet devices fitted to ceilings of enclosed areas that are to be conditioned.
  • This invention offers a considerable increase in the performance of the diffuser is achieved and notably simplifies its manufacture, due to the design characteristics that have been implemented on same.
  • the diffuser is made in such a way that the effect of the induction, that takes place inside it, is carried out from the quantity of induced air that enters the inner space through a wide opening on the front plate. This effect is facilitated by the profile itself, that has been fitted to a section of the previously mentioned front plate.
  • the field of application of the invention is comprised within the industrial sector dedicated to the manufacture and/or installation of equipment and devices for air conditioning in general.
  • induction diffusers have been used in air conditioning installations to project the air into the enclosed area to be conditioned.
  • These diffusers consist of devices that are made up of a plurality of conical elements, with diameters that successively get smaller towards the central axis of the device. These elements are situated in mutually concentric positions, maintaining separating distances between the successive conical elements and they are arranged in such a way that the separations between the cones make up diverging sections that lead towards the outside.
  • Inside the diffuser opposite the outlet there is a cylindrical section so that it can be connected to the plenum, where the air is received at the lowest temperature transported by the corresponding duct.
  • the effect of induction with a mixture of air from the outside is carried out in the external part of the diffuser, and is a consequence of the depression created by the previously mentioned divergent separation that exists between the successive adjacent conical elements.
  • British patent No. GB-587738-A discloses an ejector ventilating device, wherein a housing mounted externally of the deflector plate and having an inlet opening to receive the airstream, forms with the said deflector plate a continuous curved convergent passage extending to a small outlet at the edge of the deflector plate.
  • the invention herein purports as its main objective, to develop a diffuser of the type mentioned in which, unlike the conventional diffusers, the induction is generated inside the device, which offers a series of advantages compared to traditional diffusers. These advantages mean that it is possible to work with much lower or much higher temperatures, depending on the time of the year, to reduce the flow and, as a result, thus reduce the size of the device. These objectives have been achieved with the induction diffuser and will be described below and the main characteristics are defined in the part corresponding to Claim 1.
  • the diffuser that has been invented comprises a main outer casing, that is principally in the form of a truncated cone.
  • a cylindrical projection which is standard, so it can be connected to the plenum where the cold or hot air current is received from the corresponding duct.
  • sub-casings principally in the form of truncated cone shapes. They are respectively concentric with each other and with the main casing.
  • One of the sub-casings is closed at the top end and completely covers the other, and maintains a separating distance between them. This separating space is in fluid communication with the inside of the smaller sized sub-casing, due to the provision of a cylindrical neck on the smaller one.
  • This unit is closed on the front by a circular plate, which has a diameter that is slightly smaller than the outer casing but larger than that of the internal sub-casings, whose front plate is used as a mount and support for both sub-casings, and in addition provides a central circular orifice through which the air penetrates from the outside environment, with a view to induction with the air supplied inside the diffuser.
  • Figure 1 this is a side elevation view of the diffuser invented, referred to with the numerical reference 1 and the partial cross-section of a quarter. The aim is to be able to clearly distinguish the inner layout.
  • the figure illustrates the diffuser in its functional position, i.e. fitted to a ceiling (11).
  • the diffuser consists of an outer casing (2), made up of a truncated cone, which is standard. On the smaller base (top position) it has a cylindrical projection so that it can be adjusted to the plenum that receives the air current from the installation's duct pipe (not shown).
  • the first sub-casing (3) that occupies the intermediate position, is connected to the outer casing (2) using parts (5) at an angle that connect it to the said casing at its top closed base, while at the lower perimeter edge (or the large base of the truncated cone) it is joined to a front mount and support plate, helped by several long uprights (7), distributed at predefined positions along a circumferential line.
  • This plate (6) is responsible for supporting the second sub-casing (4), open at the top and extended by a cylindrical neck (9), arranged concentrically with the others as mentioned, with the help of short uprights (8), that preferentially occupy positions opposite the previously mentioned long uprights (7).
  • the front plate (6) has an orifice (10) in an axially central position, that has a predefined diameter, facing the inner space of the smaller sub-casing (4).
  • Figure 1 there are several arrows that indicate the direction of the air flow and how the induction takes place.
  • arrow f 1 indicates the direction that the air follows from the plenum, in such a way that as it progresses towards the opening (12), which circles the perimeter of the plate (6), the depression created originates the intake of a volume of air, shown by arrow f 2 , so that after passing through the innermost sub-casing (4), it continues its way through the space that exists between both sub-casings (3), (4), again towards the outlet (12).
  • the induction effect is achieved inside the diffuser, with the advantageous consequences that have been mentioned above.
  • FIGs 2 and 3 are top and elevation views respectively of the front plate (6), associated to the diffuser which, as seen in the top view, shows the uprights (7), (8), that are built-in on the plate. They emerge from radially facing positions and they are separated equal-angularly by angular distances of 120°.
  • the elevation view in Figure 3 shows a projection that enables us to see how the configuration of the front plate (6) has been designed. There is a substantial increase of the thickness as it progresses towards the inside of the plate.
  • the cross-section view of the plate can be seen in greater detail in the cross-section shown in Figure 4 , which has been taken from the line IV-IV on Figure 3 . It has been designed in this way, not only for aesthetic reasons, but taking into account the functional aspects of the unit too.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Duct Arrangements (AREA)
  • Air-Conditioning Room Units, And Self-Contained Units In General (AREA)
  • Air-Flow Control Members (AREA)
EP04380267.7A 2003-12-26 2004-12-22 Induction diffuser for air conditioning installations Active EP1548373B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ES200302964U 2003-12-26
ES200302964U ES1056485Y (es) 2003-12-26 2003-12-26 Difusor de induccion para instalaciones de acondicionamiento de aire.

Publications (3)

Publication Number Publication Date
EP1548373A2 EP1548373A2 (en) 2005-06-29
EP1548373A3 EP1548373A3 (en) 2009-10-07
EP1548373B1 true EP1548373B1 (en) 2015-07-22

Family

ID=32050314

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04380267.7A Active EP1548373B1 (en) 2003-12-26 2004-12-22 Induction diffuser for air conditioning installations

Country Status (2)

Country Link
EP (1) EP1548373B1 (es)
ES (2) ES1056485Y (es)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104390267B (zh) * 2014-10-31 2017-05-24 广东美的制冷设备有限公司 空调器及该空调器的送风方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB587738A (en) 1945-01-12 1947-05-05 John Frederick Flude Improvements in or relating to ventilating devices
GB607323A (en) * 1946-01-30 1948-08-30 Frederick Charles Stewart Improvements in ventilating devices
DE1047405B (de) * 1954-05-03 1958-12-24 Noske Nachfolger R Luftverteiler fuer kuenstliche Lueftung, Luftheizung od. dgl.
DE1222224B (de) 1964-05-22 1966-08-04 Anemostat Raumlufttechnik G M Verstellbarer Luftverteiler

Also Published As

Publication number Publication date
ES1056485Y (es) 2004-07-16
EP1548373A3 (en) 2009-10-07
ES1056485U (es) 2004-04-01
ES2549794T3 (es) 2015-11-02
EP1548373A2 (en) 2005-06-29

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