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US3627201A - Atmosphere control arrangement for machinery - Google Patents

Atmosphere control arrangement for machinery Download PDF

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Publication number
US3627201A
US3627201A US819643A US3627201DA US3627201A US 3627201 A US3627201 A US 3627201A US 819643 A US819643 A US 819643A US 3627201D A US3627201D A US 3627201DA US 3627201 A US3627201 A US 3627201A
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US
United States
Prior art keywords
hood
valve
air
interior
arrangement
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
US819643A
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English (en)
Inventor
Ernst Partsch
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Individual
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Individual
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Publication date
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Publication of US3627201A publication Critical patent/US3627201A/en
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Classifications

    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D49/00—Details or constructional features not specially adapted for looms of a particular type
    • D03D49/02—Construction of loom framework
    • D03D49/027—Arrangements or means for noise reduction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B15/00—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D49/00—Details or constructional features not specially adapted for looms of a particular type
    • D03D49/02—Construction of loom framework
    • D03D49/022—Protective hoods or curtains
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
    • F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification

Definitions

  • Air at controlled temperature and humidity is supplied to the interior of each hood and exhausted from that interior through a system of manifold pipes having orifices in the floor under each hood, and valves in the orifices which open automatically as the hood descends into the operative position and close when the hood is lifted.
  • This invention relates to controlled environments, and particularly to an arrangement for providing atmosphere control for machinery requiring specific temperature and/or humidity for operating at highest efficiency.
  • the invention provides each machine with a downwardly open hood dimensioned to receive the machine therein, the hood having an annular rim about the downwardly directed opening thereof.
  • Means are provided for moving the hood toward and away from an operative position in which the rim sealingly engages the floor on which the machine is supported.
  • the atmosphere in the hood is maintained at a temperature of to 50 C. by a source of air at that temperature and a supply conduit which connects the source to the interior of the hood in the operative position of the latter.
  • An exhaust conduit leads outwardly of the hood interior.
  • FIG. ll shows a textile factory equipped with atmosphere control equipment of this invention in elevational section
  • P10. 2 shows a modified valve arrangement for use in the apparatus of FIG. l in a corresponding view, but on a larger scale.
  • FIG. I there is shown only as much of a weaving mill as is necessary for an understanding of the invention. Only two of the many looms ll of the mill are shown together with the roof or ceiling Kill and floor ML of an enclosing shed which may have windows (not shown) and be open to the ambient atmosphere.
  • hoods 2 which are downwardly open boxes of nonmetallic acoustical insulation material such as asbestos fiber composition panels assembled on a light metal frame, not itself shown, and practically impermeable to air. Apertures in each hood 2 are provided with sliding or otherwise movable, transparent windows 3, i which normally seal the apertures, but may be opened to permit an operator's intervention in the mainly automatic operation of the enclosed loom without removing the hood 2.
  • the desired atmospheric conditions are maintained in the interior of each hood 2 by an air-conditioning system including sources of cooled and humidified air, conventional in themselves, and not shown, and distributing manifolds embedded in the floor R2.
  • the nonillustrated part of the system includes a heat exchanger arrangement in which air is cooled or heated to the desired temperature, normally not lower than l5 C. nor higher than 50 C., and dried to a relative humidity of well below 50 percent.
  • One or more pumps force the cooled or heated air through two humidifiers which automatically mix the air with water droplets or steam to raise the relative humidity to 50 percent in one airstream and percent in the other stream.
  • the two streams enter respective manifolds which communicate with the interior of each operating hood 2 through supply conduits 2's and 6 respectively, the illustration of the air supply system being limited substantially to these conduits.
  • Each conduit is equipped with a shutoff valve 7 and a control valve 8 essentially consisting each of a pivotally mounted flap.
  • the flaps of the shutoff valves 7 are operated by solenoids (not shown) and are spring or gravity biased toward the open position.
  • the flaps of the control valves 9 are set by hand by means of nonillustrated handwheels connected to the eontrol flaps by chains and sprockets.
  • a resilient, annular pad 9 conforming to the shape of the rim about the open bottom side of each hood 2 is arranged on the floor i2 and conceals one or more normally open microswitches (not shown) in the supply circuit of the solenoids which operate the valves 7.
  • the valves 7 are normally closed, and are opened by the associated solenoids when the latter are energized by the microswitches in the pad 9, the switches being closed by the weight of the hood 2 resting on the pad 9.
  • lamps it are mounted on the inside of each hood 2, and are supplied with electric current through conductors embedded in a hoisting cable l5, as is conventional in elevators.
  • the cable depends from an electrically operated hoist M mounted on the ceiling ill and is attached to the hood 2 above the center of gravity of the latter.
  • the hood 2 is guided during its vertical movement by cables 13 tensioned between the floor 112 and the ceiling ill and running through eyes fastened on the hood 2,
  • Air is withdrawn from the interior of the hood 2 in its operative position through an exhaust manifold system 16 embedded in the floor 112 and having an orifice under each hood.
  • a valve 7' in the orifice is normally closed, but is opened by a nonillustrated solenoid when the hood 2 descending on the pad 9 closes a nonillustrated microswitch in the current supply circuit of the solenoid which operates the valve 7.
  • the rate at which air is exhausted from the hood 2 (by weight) is preferably slightly smaller than the combined rate at which air is supplied to the hood through the conduits 5 and 6 so as to maintain in the hood 2 a pressure slightly higher than that of the ambient atmosphere and to maintain outward flow of air from the hood through the practically unavoidable leaks of the wall enveloping each loom l.
  • the relative humidity in each hood 2 can be set to an optimum value by operating the valves h.
  • the mixture of air at 50 and 90 percent relative humidity may be controlled to achieve any humidity value between these limits, a wider range of humidity settings can be achieved by supplying air even closer to I percent relative humidity and air drier than corresponds to 50 percent RH. It is well established, however,
  • a relative humidity near 65 percent is most advantageous for the weaving of many textile fibers, and it is preferred that the drier air be supplied at a relative humidity not substantially higher than 50 percent, nor substantially lower.
  • the dual valves in the air supply conduits 5,6 may be replaced by a single-valve flap 17 mounted in the orifice of each air supply conduit in the manner illustrated in FIG. 2 with reference to the conduit 5.
  • the flap 17 is attached by one edge to a hinge l8 equipped with a nonillustrated torsion spring that tends to swing the flap upwardly or clockwise, as seen in FIG. 2, into sealing engagement with an inner flange 24 at the orifice of the conduit 15.
  • the rim portion 2' of the hood 2 carries a bracket 19 which projects horizontally into the interior of the hood and slidably receives a vertical rod 20 provided with a longitudinal scale of indicia 22.
  • the rod may be secured on the bracket 19 in a selected position by a winged screw 21, and shifted in the direction of hood movement for adjusting the extent to which the valve flap 17 is displaced from the closed position when the hood 2 reaches its operative position.
  • the arrangement illustrated in FIG. 2 is equally applicable to the second air supply conduit 6 and to the exhaust conduit 16 in an obvious manner, and may be employed for automatically maintaining a desired relative humidity and a desired overpressure which may be set according to readings on the scales 22.
  • the individual atmosphere control hoods of the invention have numerous advantages.
  • the humidity of the atmosphere in which each loom operates may be individually controlled as may be needed for weaving different textile fibers.
  • the rate of airflow through each hood may be high enough not only to maintain perfectly uniform atmospheric conditions for every part of the machine, but high enough to sweep lint and dust effectively from the working area, and much higher than could be tolerated by operating personnel.
  • the latter are protected by the hoods against the operating noise of the looms, yet can inspect the looms through the windows 3,4 and may push the windows aside for brief routine operations without significantly upsetting the atmosphere in the hood.
  • It is another important advantage of this invention that the first cost and the operating cost of an air-conditioning system of the invention are much lower than the corresponding costs of a conventional installation, and even more substantial savings result from the simpler construction of the factory building.
  • the illustrated manifold system may readily be modified to supply air to individual hoods not only at different humidities, but also at different temperatures so that the operating temperature may be varied to suit the yarn being woven. It has been found advantageous to operate looms at temperatures up to 50 C. which are not readily tolerated by operating personnel and from which the personnel is protected by the hoods 2 which insulate not only against noise, but also against heat.
  • valve-operating means responsive to movement of said hood for opening and closing said valves when the hood moves toward and away from said operating position thereof.
  • valveoperating means including an abutment member positioned for engagement with said one valve when said hood approaches said operative position and for displacing the engaged valve toward the open position.
  • mounting means for securing said abutment member to saidhood in each of a plurality of positions offset relative to each other in the direction of hood movement toward the operative position, and for thereby varying the displacement of said one valve toward said open position.
  • said source of air being effective in supplying air of a relative humidity close to percent at said temperature
  • the atmosphere control means further comprising another source of air at said temperature and at a relative humidity of not substantially more than 50 percent, and another supply conduit connecting said other source to said interior in the operative position of said hood.
  • conduits being located in said floor and having upwardly directed orifices in the same.
  • a light source mounted on said hood in said interior of the same, said hood being formed with an aperture, and a window movable relative to said hood toward and away from a position in which said window seals said aperture.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Auxiliary Weaving Apparatuses, Weavers' Tools, And Shuttles (AREA)
  • Preliminary Treatment Of Fibers (AREA)
US819643A 1968-04-30 1969-04-28 Atmosphere control arrangement for machinery Expired - Lifetime US3627201A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT417968A AT287250B (de) 1968-04-30 1968-04-30 Überdeckung für automatisch arbeitende Arbeitsmaschinen

Publications (1)

Publication Number Publication Date
US3627201A true US3627201A (en) 1971-12-14

Family

ID=3560695

Family Applications (1)

Application Number Title Priority Date Filing Date
US819643A Expired - Lifetime US3627201A (en) 1968-04-30 1969-04-28 Atmosphere control arrangement for machinery

Country Status (6)

Country Link
US (1) US3627201A (de)
AT (1) AT287250B (de)
BE (1) BE732398A (de)
CH (1) CH496926A (de)
FR (1) FR2007322A1 (de)
GB (1) GB1234337A (de)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4074725A (en) * 1975-06-05 1978-02-21 Sulzer Brothers, Ltd. Cover for a weaving machine
US4088157A (en) * 1975-06-12 1978-05-09 Sulzer Brothers Ltd. Hood system for covering an automatically operating machine
FR2388067A1 (fr) * 1977-04-21 1978-11-17 Sulzer Ag Machine a tisser
FR2409335A1 (fr) * 1977-11-17 1979-06-15 Sulzer Ag Machine a tisser
US4699179A (en) * 1986-08-04 1987-10-13 Graham Walker O Cleaning and yarn conditioning system for weaving machines
US5738150A (en) * 1994-06-15 1998-04-14 Picanol N.V. Weaving machine cover
US6604553B1 (en) 1998-12-28 2003-08-12 Textilma Ag Device for noise reduction, air-conditioning and accident reduction for a jacquard weaving machine and jacquard weaving machine with such a device
US20060143872A1 (en) * 2004-10-27 2006-07-06 Rieter Ingolstadt Spinnereimaschinenbau Ag Spinning preparatory machine and a housing for a drafting assembly of a spinning preparatory machine
US20080311837A1 (en) * 2007-06-12 2008-12-18 United Microelectronics Corp. Preventive maintenance hood
CN105063812A (zh) * 2015-07-21 2015-11-18 杨建军 绒毛低温联合分梳装置及分梳工艺

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2940824C2 (de) * 1979-10-09 1982-07-22 Lindauer Dornier-Gesellschaft Mbh, 8990 Lindau Webmaschine mit Abdeckung
DE3228672A1 (de) * 1982-07-31 1984-02-02 Trützschler GmbH & Co KG, 4050 Mönchengladbach Verfahren und vorrichtung zur klimatisierung einer spinnereivorbereitungsanlage
DE3821238A1 (de) * 1988-06-23 1989-12-28 Rieter Ag Maschf Verfahren und vorrichtung zur herstellung eines gleichmaessigen faserbandes
FR2778781B1 (fr) * 1998-05-12 2003-06-13 Flii Bertero & C Spa Dispositif de protection du personnel contre le bruit sur un site de production, ses utilisations, site de production comportant un tel dispositif

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4074725A (en) * 1975-06-05 1978-02-21 Sulzer Brothers, Ltd. Cover for a weaving machine
US4088157A (en) * 1975-06-12 1978-05-09 Sulzer Brothers Ltd. Hood system for covering an automatically operating machine
FR2388067A1 (fr) * 1977-04-21 1978-11-17 Sulzer Ag Machine a tisser
US4237941A (en) * 1977-04-21 1980-12-09 Sulzer Brothers Limited Loom with cover arrangement
FR2409335A1 (fr) * 1977-11-17 1979-06-15 Sulzer Ag Machine a tisser
US4227552A (en) * 1977-11-17 1980-10-14 Sulzer Brothers Limited Weaving machine having an air duct for cleaning purposes
US4699179A (en) * 1986-08-04 1987-10-13 Graham Walker O Cleaning and yarn conditioning system for weaving machines
US5738150A (en) * 1994-06-15 1998-04-14 Picanol N.V. Weaving machine cover
US6604553B1 (en) 1998-12-28 2003-08-12 Textilma Ag Device for noise reduction, air-conditioning and accident reduction for a jacquard weaving machine and jacquard weaving machine with such a device
US20060143872A1 (en) * 2004-10-27 2006-07-06 Rieter Ingolstadt Spinnereimaschinenbau Ag Spinning preparatory machine and a housing for a drafting assembly of a spinning preparatory machine
US20080311837A1 (en) * 2007-06-12 2008-12-18 United Microelectronics Corp. Preventive maintenance hood
CN105063812A (zh) * 2015-07-21 2015-11-18 杨建军 绒毛低温联合分梳装置及分梳工艺
CN105063812B (zh) * 2015-07-21 2018-08-07 杨建军 绒毛低温联合分梳装置及分梳工艺

Also Published As

Publication number Publication date
GB1234337A (de) 1971-06-03
DE1921208A1 (de) 1969-11-13
CH496926A (de) 1970-09-30
AT287250B (de) 1971-01-11
FR2007322A1 (de) 1970-01-02
BE732398A (de) 1969-10-01
DE1921208B2 (de) 1976-02-19

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