US3750839A - Air distribution apparatus - Google Patents

Air distribution apparatus Download PDF

Info

Publication number
US3750839A
US3750839A US00194281A US3750839DA US3750839A US 3750839 A US3750839 A US 3750839A US 00194281 A US00194281 A US 00194281A US 3750839D A US3750839D A US 3750839DA US 3750839 A US3750839 A US 3750839A
Authority
US
United States
Prior art keywords
air
baffle
damper
disposed
angle
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
Application number
US00194281A
Other languages
English (en)
Inventor
J Mcnabney
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.)
Trane US Inc
Original Assignee
Trane Co
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 Trane Co filed Critical Trane Co
Application granted granted Critical
Publication of US3750839A publication Critical patent/US3750839A/en
Assigned to TRANE COMPANY, THE reassignment TRANE COMPANY, THE MERGER (SEE DOCUMENT FOR DETAILS). DELAWARE, EFFECTIVE FEB. 24, 1984 Assignors: A-S CAPITAL INC. A CORP OF DE
Assigned to TRANE COMPANY THE reassignment TRANE COMPANY THE MERGER (SEE DOCUMENT FOR DETAILS). EFFECTIVE 12/1/83 WISCONSIN Assignors: A-S CAPITAL INC., A CORP OF DE (CHANGED TO), TRANE COMPANY THE, A CORP OF WI (INTO)
Assigned to AMERICAN STANDARD INC., A CORP OF DE reassignment AMERICAN STANDARD INC., A CORP OF DE MERGER (SEE DOCUMENT FOR DETAILS). EFFECTIVE 12/28/84 DELAWARE Assignors: A-S SALEM INC., A CORP. OF DE (MERGED INTO), TRANE COMPANY, THE
Assigned to A-S CAPITAL INC., A CORP OF DE reassignment A-S CAPITAL INC., A CORP OF DE MERGER (SEE DOCUMENT FOR DETAILS). Assignors: TRANE COMPANY THE A WI CORP
Assigned to BANKERS TRUST COMPANY reassignment BANKERS TRUST COMPANY SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: AMERICAN STANDARD INC., A DE. CORP.,
Assigned to BANKERS TRUST COMPANY reassignment BANKERS TRUST COMPANY SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: TRANE AIR CONDITIONING COMPANY, A DE CORP.
Anticipated expiration legal-status Critical
Assigned to CHEMICAL BANK, AS COLLATERAL AGENT reassignment CHEMICAL BANK, AS COLLATERAL AGENT ASSIGNMENT OF SECURITY INTEREST Assignors: BANKERS TRUST COMPANY, AS COLLATERAL TRUSTEE
Assigned to AMERICAN STANDARD, INC. reassignment AMERICAN STANDARD, INC. RELEASE OF SECURITY INTEREST (RE-RECORD TO CORRECT DUPLICATES SUBMITTED BY CUSTOMER. THE NEW SCHEDULE CHANGES THE TOTAL NUMBER OF PROPERTY NUMBERS INVOLVED FROM 1133 TO 794. THIS RELEASE OF SECURITY INTEREST WAS PREVIOUSLY RECORDED AT REEL 8869, FRAME 0001.) Assignors: CHASE MANHATTAN BANK, THE (FORMERLY KNOWN AS CHEMICAL BANK)
Assigned to AMERICAN STANDARD, INC. reassignment AMERICAN STANDARD, INC. RELEASE OF SECURITY INTEREST Assignors: CHASE MANHATTAN BANK, THE (FORMERLY KNOWN AS CHEMICAL BANK)
Expired - Lifetime legal-status Critical Current

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
    • F24F13/02—Ducting arrangements
    • F24F13/06—Outlets for directing or distributing air into rooms or spaces, e.g. ceiling air diffuser
    • F24F13/072—Outlets for directing or distributing air into rooms or spaces, e.g. ceiling air diffuser of elongated shape, e.g. between ceiling panels
    • 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
    • F24F13/24—Means for preventing or suppressing noise

Definitions

  • the apparatus includes a UNITED STATES PATENTS sound-dampening baffle to aid in delivering air with a 511,369 12/1893 Stafford 98/8 mmimum pe'ceptible mise- Ashley R Cl-ims. 8 Dr.wlng Figures 2,890,717 6/1959 Werder together
  • This invention relates toair distribution systems generally, and'particularly to apparatus forreceivingconditionedair from a source and delivering'the air to one ormore spaces;
  • the invention deals with" the-distribution of airto offices within an office building, rooms within-a school-building, and'the'like:
  • the present invention provides an air distribution apparatus'including'anair controlsection andat'least one air diffuser section in fluid'communication such that air fl'owsfrom 'the cont'rol section to one'or more diffuser sections.
  • the 'control section includes a' damper m'echa-- nism for throttling-airflow-through thecontrol section,-
  • FIG. 1 isaperspective view, partially'brokenaway, of an airdistribution apparatus
  • FIGVZ is afrontview'in-elevation of the appa'ratusof 45" FIG. 1;
  • FIG. 3 is ase'ction view'taken along line 3-3 inFlG. r
  • FIG. 4 is a section view taken alongline 4-4 of FIG. 3.
  • FIG. 5 is an enlarged section of one form of sound baffle
  • an air distribution apparatus is
  • controlsection ll an'd'diffiiser section 12. While the" control-sectionll andfdiffuser section 12*are shown to be'contiguous, it-will be understood that such is notnecessary to thepresent" invention; and that diffuser section 12- may be located at some distance. remote from control section 11, the two-sections'in that instance being: connected'by suitable conduit or ductwork.
  • baffle 26 is provided sound dampening baffle 26.
  • Baffle 26 is in Control section 11 and diffuser section l2are generally,rectangular in cross section and are preferably constructed'of metal such as galvanized or enameled steel.”
  • Ailayer of' sound absorbing insulation 15 is attached to the interior'walls of both sections.
  • Diffuser section 12 includes depending flanges 16 at each longitudinal 'end thereof which are useful in attaching the diffuser section to the ceiling supports, such asaT-bar, generally providedfor installations of this;
  • Control'section includes an air'inlet l3 and air outlets" l4 and 171
  • Outlet 14 may be usedto connect control section" 11 to an additional diffuser section re-- motely located from control section 11.
  • Outlet 17 places control section 11 into fluid communication with diffuser section 12 whereby a portion of the air" passin'glthrough control section 11 passes through outlet-I7 into diffuser section 12.
  • the air delivery slots are formed by depending flanges 19, which are preferably semi-octagonal in contour, with a center strip 20 disposed between flanges 19, the center strip 20 having;
  • Air entering control section 11 through inlet 13 passes through aV-shaped'perforated screen 22 which has been found to be useful in dampeningthe sound of theincoming-air.
  • Air flow-through control section 11, and-subsequently into and through difiuser section 12, iscontrolled' by damper 25 rotatable about rod-3]. It has been found that air flow can be effectively controlledwhen damper'25 is arranged to turn through an angle of about 60 from the fullyopen to the fully closed'positions. To-accomplish this, damperstops 23 the-general form of 'a perforated plate, and is of'a particular configuration for best results.
  • the baffle 26 includesan angled portion 27, a horizontal portion 28,
  • angled portion 27 may be somewhat varied, it is preferred that this portion be at an angle'which' is about 0 to l5 from the horizontal less than the angle of damper 25 from the horizontal with the damper inthe closed position. For example, if angle A in FIG. 3 is about 60, it would be preferred that angle 8 be'from' about 45 to about 60.
  • portion 28 is substantially horizontal, it can be seen that it will be essentially parallel'to damper 25 'when the damper is in the open position. It is also preferred that portion 29'be substantially vertical.
  • baffle 26 After the air has passed through baffle 26, a portion of the flow will exitthrough outlet 14 to a satellite diffuser, and a portion of the flow will pass through outlet 17, through perforated screen 30, into diffuser section 12, to be delivered to the space in the manner previously described hereinbefore.
  • sound dampening baffle 26 be of the particular configuration described, as that configuration has been found to be most effective in reducing the types of noise emissions most objectionable to most people.
  • some beneficial results can be obtained with slightly different shaped baffles as will be more fully described with reference to FIGS. 5, 6 and 7.
  • baffle 26a An alternative shaped baffle 26a is shown in FIG. 5.
  • Baffle 260 includes angled portion 27a, curved portion 28a, and horizontal projection 34a.
  • Yet another baffle shape is illustrated at 26b of FIG. 6, wherein baffle 26b includes angled portion 27b, vertical portion 29b, and horizontal projection 34b.
  • FIG. 8 is illustrative of an alternative installation of baffle 26 and damper 25 within the air distribution apparatus 10.
  • the structure is essentially the same as that illustrated in FIG. 3, for example, except that the damper mechanism and the sound baffle 26 have been inverted.
  • damper 25 and baffle 26 have been maintained in that the damper lies adjacent horizontal portion 28 when in the open position, and lies in angular disposition along and spaced from slanted portion 27 in the closed position.
  • damper 25 rotates counter-clockwise from the open to the closed position, rather than clockwise as in the configuration shown in FIG. 3, for example.
  • the apparatus of FIG. 8 covers an advantage in that outlet 17 can be shifted more toward the center of control section 11, subjacent slanted portion 27. The more central location of outlet 17 provides improved distribution to diffuser section 12.
  • SlL Speech Interference Levels
  • L loudness level
  • the SlL is a single number derived by taking the arithmetic average of sound pressure levels in the three octave frequency bands 600l,200, l,200-2,400, and 2,400-4,800 cycles per second.
  • L,, in phons isobtained by measuring the sound pressure in each of eight octave bands, converting each to loudness in sones, and summing these to obtain a loudness in sones. This can then be converted to loudness in phons, or L,,, by the formula:
  • N is the sum of the loudnesses in sones.
  • the NC curves are plotted over a graph showing octave band level in decibels on the vertical axis, and sound frequency in cycle per second along the horizontal axis.
  • NC levels are, in essence, an objective or empirical expression of a subjective matter. That is, NC levels seek to express the effect on humans of sounds of particular groups of frequencies and loudness levels. In general, the lower the NC level the less noticeable. and less annoying the sound represented; the higher NC levels indicating more noticeable and more annoying sounds. Accordingly, with reference to FIG. 7, it can be seen that for two sounds of equal loudness, the noise criteria level increases with the frequency of the sound. For example, at a level of 40 decibels, a sound at a frequency of I25 cps would have an NC level of about 20 whereas abound of 4,000 cps would have an NC level of about 42. That.
  • NC levels for air delivery equipment for different types of environments have been suggested in the industry as general design guidelines. For example, a concert hall--NC 22, private hospital room--NC 30, school classroom--NC 35, general office space--NC 40, cafeteria--NC 45, and factory--NC 65. Viewing Table I, it can be seen without a sound dampening baffle such as baffles 26, 26a, and 26b, the NC level at 300 CFM (damper 25 in the open position) was too high for most air conditioning applications. However, with baffle 26, 26a, or 26b installed, the NC level has been brought within acceptable ranges, although some increases were noted at 50 CFM (danper 25 nearly closed).
  • the apparatus of the present invention provides for the control and delivery of conditioned air to a space or plurality of spaces in a manner that insures the comfort of the occupants of the space from both a phsyiological and psychological view point by providing for air delivery which is relatively draft-free and does not create annoying background noise.
  • An air distribution apparatus for providing conditioned air to at least one space, said apparatus comprismg:
  • an air receiving portion having an air inlet and a plurality of air outlets
  • damper means disposed in said air receiving portion to vary the volume of air passing through said portion
  • said air receiving portion includes top and bottom walls, and wherein said second baffle slants downwardly and rearwardly from said top wall, thereafter extends substantially horizontally and rearwardly, and thereafter extends substantially vertically downwardly into contact with said bottom wall.
  • said second baffle includes a slanted portion, said slanted portion disposed at an angle measured from the horizontal which is from about 0 to about 20 less than the angle at which said damper means is disposed from the horizontal when said damper means is in the closed position.
  • said air receiving portion includes top and bottom walls; and wherein said second baffle slants downwardly and rearwardly from said top wall and thereafter smoothly curves downwardly and forwardly into contact with said bottom wall.
  • said air receiving portion includes top and bottom walls, and wherein said second baffle slants downwardly and rearwardly from said top wall and thereafter extends substantially vertically downwardly into contact with said bottom wall.
  • said air receiving portion includes top and bottom walls, and wherein said second baffle extends substantially vertically downwardly from said top wall to a point about midway between said top and bottom walls, thereafter extends substantially horizontally and forwardly toward said damper means, and thereafter slants downwardly and forwardly into contact with said bottom wall.
  • said first perforated baffle comprises a substantially V-shaped perforated plate between said damper means and said air inlet, said first baffle extending substantially across the area of said air inlet.
  • said slot means includes a semi-octagonal side and an L-shaped side facing said semi-octagonal side, whereby air passing through said slot means flows along the ceiling of said space.
  • said slot means includes two spaced apart semi-octagonal sides and an inverted U-shaped member disposed between said semi-octagonal sides, said U-shaped member having horizontal projections at each tip thereof facing toward a respective semi-octagonal side, whereby air passing through said slot flows along the ceiling of said space in two oppositely directed streams.
  • each of said diffuser portions includes a third perforated baffle disposed in the fluid passageways between said air outlets and each of said diffuser portions.
  • said second perforated baffle including a slanted portion, a horizontal portion, and a vertical portion
  • said damper means including a rotatable damper blade, wherein said slanted portion is disposed at an angle measured from the horizontal which is about 0 to 20 less than the angle at which said damper blade is disposed from the horizontal when said damper blade is in the closed position.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Duct Arrangements (AREA)
  • Building Environments (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Air-Flow Control Members (AREA)
US00194281A 1971-11-01 1971-11-01 Air distribution apparatus Expired - Lifetime US3750839A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US19428171A 1971-11-01 1971-11-01

Publications (1)

Publication Number Publication Date
US3750839A true US3750839A (en) 1973-08-07

Family

ID=22716980

Family Applications (1)

Application Number Title Priority Date Filing Date
US00194281A Expired - Lifetime US3750839A (en) 1971-11-01 1971-11-01 Air distribution apparatus

Country Status (9)

Country Link
US (1) US3750839A (enrdf_load_stackoverflow)
JP (1) JPS4853545A (enrdf_load_stackoverflow)
AU (1) AU463019B2 (enrdf_load_stackoverflow)
CA (1) CA969798A (enrdf_load_stackoverflow)
DE (1) DE2254169A1 (enrdf_load_stackoverflow)
FR (1) FR2158408B1 (enrdf_load_stackoverflow)
GB (1) GB1382910A (enrdf_load_stackoverflow)
IT (1) IT966873B (enrdf_load_stackoverflow)
ZA (1) ZA727516B (enrdf_load_stackoverflow)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4017025A (en) * 1974-01-28 1977-04-12 Wehr Corporation Variable volume control box and system incorporating same
US4158990A (en) * 1976-11-23 1979-06-26 Schako-Metallwarenfabrik Ferdinand Schad Gmbh Air distribution box
US4177629A (en) * 1978-06-23 1979-12-11 Seabrook, Inc. Tunable noise suppression system for spinning machine fiber collector units
EP0053302A1 (en) * 1980-11-28 1982-06-09 Carrier Corporation Low frequency noise and turbulence reducer
US4418719A (en) * 1980-11-26 1983-12-06 Downs Jr Edward T Air control apparatus
US4426845A (en) 1981-02-17 1984-01-24 The Boeing Company Noise reduction in pneumatically drive hydraulic pump
US4726563A (en) * 1980-11-28 1988-02-23 Carrier Corporation Low frequency noise and turbulence reducer
US5283398A (en) * 1989-12-26 1994-02-01 Tsuchiya Mfg. Co., Ltd. Resonator type silencer
US5486140A (en) * 1993-10-21 1996-01-23 Venturedyne, Ltd. Variable air volume terminal unit with exterior insulation
US20050011699A1 (en) * 2003-07-14 2005-01-20 Yukihisa Horiko Muffler
EP1614978A1 (de) * 2004-07-07 2006-01-11 Erwin Müller GmbH Kombinierter Zu- und Abluftdurchlass
US20090032330A1 (en) * 2006-04-20 2009-02-05 Airbus Deutschland Gmbh Noise optimized air distributor
DE102013203375A1 (de) * 2013-02-28 2014-08-28 Siemens Aktiengesellschaft Klimatisierungsanordnung für ein Schienenfahrzeug

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8432305U1 (de) * 1984-11-05 1985-02-07 Gebrüder Trox, GmbH, 4133 Neukirchen-Vluyn Drosselklappe fuer klimatechnische anlagen
FR2624580B1 (fr) * 1987-12-10 1990-02-09 Aldes Caisson de liaison entre des conduits horizontaux et verticaux d'une installation de ventilation mecanique d'un batiment, equipe de moyens d'absorption acoustique
DE4343718A1 (de) * 1993-12-21 1995-06-22 Wimboeck Besitz Gmbh Lüftungskasten
DE19509910C2 (de) * 1995-03-18 2002-12-12 Werner Wildeboer Anschlußkasten für Luftdurchlässe in lufttechnischen Anlagen
ES2394332B1 (es) * 2012-08-02 2013-09-12 Soler & Palau Res Sl Caja de ventilacion

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US511369A (en) * 1893-12-26 Marshall b
US1982747A (en) * 1932-10-29 1934-12-04 Kurth Franz Josef Ventilating device
US2246338A (en) * 1938-11-17 1941-06-17 Carrier Corp Metering damper outlet
US2644389A (en) * 1949-10-27 1953-07-07 W B Connor Engineering Corp Diffuser for air conditioning systems
FR1118819A (fr) * 1953-12-29 1956-06-12 Buensod Stacey Appareillage de conditionnement d'air
US2820406A (en) * 1954-05-14 1958-01-21 Connor Eng Corp Noise reduction means for air outlet devices
US2890717A (en) * 1955-11-08 1959-06-16 Buensod Stacey Inc Flow control device
US2970531A (en) * 1957-03-14 1961-02-07 Robertson Co H H Outlet box for air conditioning system
US3059564A (en) * 1959-10-30 1962-10-23 Robertson Co H H Low noise air distributor
US3126811A (en) * 1964-03-31 kennedy
US3179125A (en) * 1960-10-07 1965-04-20 Air Devices Inc One motor mixing box
US3391756A (en) * 1967-09-25 1968-07-09 Svenska Flaektfabriken Ab Damper for regulating the flow of a gaseous medium

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3276349A (en) * 1964-08-27 1966-10-04 Allied Thermal Corp Air diffuser

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US511369A (en) * 1893-12-26 Marshall b
US3126811A (en) * 1964-03-31 kennedy
US1982747A (en) * 1932-10-29 1934-12-04 Kurth Franz Josef Ventilating device
US2246338A (en) * 1938-11-17 1941-06-17 Carrier Corp Metering damper outlet
US2644389A (en) * 1949-10-27 1953-07-07 W B Connor Engineering Corp Diffuser for air conditioning systems
FR1118819A (fr) * 1953-12-29 1956-06-12 Buensod Stacey Appareillage de conditionnement d'air
US2820406A (en) * 1954-05-14 1958-01-21 Connor Eng Corp Noise reduction means for air outlet devices
US2890717A (en) * 1955-11-08 1959-06-16 Buensod Stacey Inc Flow control device
US2970531A (en) * 1957-03-14 1961-02-07 Robertson Co H H Outlet box for air conditioning system
US3059564A (en) * 1959-10-30 1962-10-23 Robertson Co H H Low noise air distributor
US3179125A (en) * 1960-10-07 1965-04-20 Air Devices Inc One motor mixing box
US3391756A (en) * 1967-09-25 1968-07-09 Svenska Flaektfabriken Ab Damper for regulating the flow of a gaseous medium

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4017025A (en) * 1974-01-28 1977-04-12 Wehr Corporation Variable volume control box and system incorporating same
US4158990A (en) * 1976-11-23 1979-06-26 Schako-Metallwarenfabrik Ferdinand Schad Gmbh Air distribution box
US4177629A (en) * 1978-06-23 1979-12-11 Seabrook, Inc. Tunable noise suppression system for spinning machine fiber collector units
US4418719A (en) * 1980-11-26 1983-12-06 Downs Jr Edward T Air control apparatus
US4726563A (en) * 1980-11-28 1988-02-23 Carrier Corporation Low frequency noise and turbulence reducer
EP0053302A1 (en) * 1980-11-28 1982-06-09 Carrier Corporation Low frequency noise and turbulence reducer
US4426845A (en) 1981-02-17 1984-01-24 The Boeing Company Noise reduction in pneumatically drive hydraulic pump
US5283398A (en) * 1989-12-26 1994-02-01 Tsuchiya Mfg. Co., Ltd. Resonator type silencer
US5486140A (en) * 1993-10-21 1996-01-23 Venturedyne, Ltd. Variable air volume terminal unit with exterior insulation
US20050011699A1 (en) * 2003-07-14 2005-01-20 Yukihisa Horiko Muffler
US7255197B2 (en) * 2003-07-14 2007-08-14 Toyoda Boshoku Corporation Muffler
EP1614978A1 (de) * 2004-07-07 2006-01-11 Erwin Müller GmbH Kombinierter Zu- und Abluftdurchlass
US20090032330A1 (en) * 2006-04-20 2009-02-05 Airbus Deutschland Gmbh Noise optimized air distributor
US7815012B2 (en) * 2006-04-20 2010-10-19 Airbus Deutschland Gmbh Noise optimized air distributor
DE102013203375A1 (de) * 2013-02-28 2014-08-28 Siemens Aktiengesellschaft Klimatisierungsanordnung für ein Schienenfahrzeug

Also Published As

Publication number Publication date
JPS4853545A (enrdf_load_stackoverflow) 1973-07-27
FR2158408B1 (enrdf_load_stackoverflow) 1976-08-20
IT966873B (it) 1974-02-20
AU4827872A (en) 1974-05-02
AU463019B2 (en) 1975-07-10
DE2254169A1 (de) 1973-05-10
FR2158408A1 (enrdf_load_stackoverflow) 1973-06-15
ZA727516B (en) 1974-06-26
CA969798A (en) 1975-06-24
GB1382910A (en) 1975-02-05

Similar Documents

Publication Publication Date Title
US3750839A (en) Air distribution apparatus
US6402612B2 (en) Column fan unit
US3568791A (en) Air ducting
US2180945A (en) Ventilating construction
US6640926B2 (en) Elbow silencer
US3059564A (en) Low noise air distributor
JP2000512369A (ja) 音響共鳴器
US5663535A (en) Sound attenuator for HVAC systems
US5232401A (en) Air supplying apparatus
CN108954759A (zh) 风口装置及空调机组
US2299112A (en) Acoustic filter
US2269376A (en) Diffuser for the outlets of air ducts
US3768394A (en) Device for producing dynamic flow in fluids to form curtains of the fluid
US3507354A (en) Sound attenuating air discharge terminal device
US4553475A (en) Laboratory hood attachment
US2724320A (en) Distributing system
US3094189A (en) Air mixing and sound attenuating chamber
CN108757583B (zh) 减噪装置及具有该减噪装置的减噪风机舱室
US3185067A (en) Slot diffuser
US3202078A (en) Combined structural and air conditioning system for buildings
KR800000395B1 (ko) 에어콘 터미날
FI58561B (fi) Luftkonditioneringsterminal
EP0354949B1 (en) Air distribution unit
WO1991019135A1 (en) Air conditioning system and method
EP0493350B1 (en) A device for achieving or measuring a pressure difference

Legal Events

Date Code Title Description
AS Assignment

Owner name: TRANE COMPANY, THE

Free format text: MERGER;ASSIGNOR:A-S CAPITAL INC. A CORP OF DE;REEL/FRAME:004334/0523

AS Assignment

Owner name: TRANE COMPANY THE

Free format text: MERGER;ASSIGNORS:TRANE COMPANY THE, A CORP OF WI (INTO);A-S CAPITAL INC., A CORP OF DE (CHANGED TO);REEL/FRAME:004372/0370

Effective date: 19840224

Owner name: AMERICAN STANDARD INC., A CORP OF DE

Free format text: MERGER;ASSIGNORS:TRANE COMPANY, THE;A-S SALEM INC., A CORP. OF DE (MERGED INTO);REEL/FRAME:004372/0349

Effective date: 19841226

AS Assignment

Owner name: A-S CAPITAL INC., A CORP OF DE

Free format text: MERGER;ASSIGNOR:TRANE COMPANY THE A WI CORP;REEL/FRAME:004432/0765

Effective date: 19840224

AS Assignment

Owner name: BANKERS TRUST COMPANY, NEW YORK

Free format text: SECURITY INTEREST;ASSIGNOR:TRANE AIR CONDITIONING COMPANY, A DE CORP.;REEL/FRAME:004905/0213

Effective date: 19880624

Owner name: BANKERS TRUST COMPANY, 4 ALBANY STREET, 9TH FLOOR,

Free format text: SECURITY INTEREST;ASSIGNOR:TRANE AIR CONDITIONING COMPANY, A DE CORP.;REEL/FRAME:004905/0213

Effective date: 19880624

Owner name: BANKERS TRUST COMPANY

Free format text: SECURITY INTEREST;ASSIGNOR:AMERICAN STANDARD INC., A DE. CORP.,;REEL/FRAME:004905/0035

Effective date: 19880624

AS Assignment

Owner name: CHEMICAL BANK, AS COLLATERAL AGENT, NEW YORK

Free format text: ASSIGNMENT OF SECURITY INTEREST;ASSIGNOR:BANKERS TRUST COMPANY, AS COLLATERAL TRUSTEE;REEL/FRAME:006565/0753

Effective date: 19930601

AS Assignment

Owner name: AMERICAN STANDARD, INC., NEW JERSEY

Free format text: RELEASE OF SECURITY INTEREST (RE-RECORD TO CORRECT DUPLICATES SUBMITTED BY CUSTOMER. THE NEW SCHEDULE CHANGES THE TOTAL NUMBER OF PROPERTY NUMBERS INVOLVED FROM 1133 TO 794. THIS RELEASE OF SECURITY INTEREST WAS PREVIOUSLY RECORDED AT REEL 8869, FRAME 0001.);ASSIGNOR:CHASE MANHATTAN BANK, THE (FORMERLY KNOWN AS CHEMICAL BANK);REEL/FRAME:009123/0300

Effective date: 19970801

AS Assignment

Owner name: AMERICAN STANDARD, INC., NEW JERSEY

Free format text: RELEASE OF SECURITY INTEREST;ASSIGNOR:CHASE MANHATTAN BANK, THE (FORMERLY KNOWN AS CHEMICAL BANK);REEL/FRAME:008869/0001

Effective date: 19970801