USRE39655E1 - Air distributor assembly and process for air conditioning a textile machine using a displacement type air flow system - Google Patents

Air distributor assembly and process for air conditioning a textile machine using a displacement type air flow system Download PDF

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Publication number
USRE39655E1
USRE39655E1 US08/977,915 US97791592A USRE39655E US RE39655 E1 USRE39655 E1 US RE39655E1 US 97791592 A US97791592 A US 97791592A US RE39655 E USRE39655 E US RE39655E
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United States
Prior art keywords
air
flow
warp
conditioning
weaving machine
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Expired - Lifetime
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US08/977,915
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English (en)
Inventor
Pavel Verner
Walter Bollier
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LUWA TEXTILE AIR ENGINEERING AG
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Zellweger Luwa AG
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Assigned to LUWA TEXTILE AIR ENGINEERING AG reassignment LUWA TEXTILE AIR ENGINEERING AG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: ZELLWEGER LUWA AG
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    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03J—AUXILIARY WEAVING APPARATUS; WEAVERS' TOOLS; SHUTTLES
    • D03J1/00—Auxiliary apparatus combined with or associated with looms
    • D03J1/002—Climatic conditioning or removing lint or dust

Definitions

  • the invention relates to a process for the air conditioning of a weaving machine, and more particularly to a device for the air conditioning a weaving machine.
  • conditioned air is supplied both via ceiling outlets distributed within the room and also through local outlets.
  • a local outlet is provided, which exhibits a slot-shaped exit opening at a spacing above the warp.
  • the local outlets are disposed below the warps. In both cases, the exit opening extends approximately transversely to the warp over its full width and releases a jet of conditioned air, which jet is directed towards the warp.
  • the object of the invention is to provide a process which brings an effective conditioning with a considerable reduction of the air conditioning costs per weaving machine by reduced power requirement and volume flow of air as well as lower water consumption, without creating an impermissible obstruction in visual terms or for accessibility.
  • a piston-type displacement flow is understood as referring to a low-turbulence flow with a distribution which is approximately uniform over its full cross section and approximately equal velocity. In this case, exit velocities between 0.3 and 1.2 m/sec enter into consideration.
  • the invention is based on the finding that the transport of the moisture by an air jet blown out from a slot-shaped exit opening is of low effectiveness and is therefore uneconomical. What is responsible for this is mainly the relatively high exit velocity which is required for the throughput of the required quantity of air. Investigations demonstrate that in the first instance a considerable part of the conditioning air blown out does not reach the (still noninterwoven) warp threads. Subsequently, a part of this air rebounds at the warp, without being able to give off its humidity. This means that considerably more conditioned air must be conveyed than comes into action at the warp to achieve the relative humidity aimed at.
  • the displacement flow employed according to the invention permits a quite considerable reduction of the required exit velocity as compared with that from a slot-shaped exit opening, with an equal path to be traversed to reach the warp.
  • the piston-type displacement flow permits the creation and maintenance, within its cross section, of conditions which are different from those of the surroundings.
  • By designing the cross sectional shape and dimensions it is accordingly possible to control the climate of each respective zones at a textile machine with respect to required properties. The entry of entrained matter and dust from the surroundings into this zone is likewise prevented. If this is required, it is accordingly also possible to control at a machine or within the delivery region of the textile material, a plurality of zones, by a respective piston-type displacement flow; in this case, the climatic conditions in these zones can be designed to be different.
  • piston-type displacement flows may be employed with advantage also 10 for the air conditioning of other textile procedures and processes such as for example in carding, in depositing, storage and take-up of the slubbing from the can, in stretching and spinning, as well as in twisting.
  • FIG. 1 diagrammatically shows the conditions at a weaving machine equipped with a device according to the invention, in the application of an embodiment of the process;
  • FIG. 2 shows a vertical cross section along line II—II in FIG. 3 , through the local outlet of the device according to FIG. 1 , which local outlet is shown on an enlarged scale, and
  • FIG. 3 shows a bottom plan view of the local outlet according to FIGS. 1 and 2 , partly broken away.
  • reference numeral 2 generally designates a weaving machine having a warp beam 4 , thread stop motions 6 , a heald frame assembly 8 , a slay 10 , and a cloth beam 12 .
  • the warp threads which pass over a backrest 14 and which form the warp 16 are designated by 18 and the back shed of the shed adjoining the thread stop motions 6 is indicated at 20 .
  • a local outlet 22 is disposed above the weaving machine 2 and at a spacing from the warp 16 or the back shed 20 , which local outlet is supplied with conditioned air via a line 24 from an air conditioning plant 26 .
  • the local outlets of all further weaving machines of the weaving room (not shown) are also connected to the same air conditioning plant 26 .
  • the local outlet 22 possesses an exit opening 32 directed downwards towards the warp 16 and extends horizontally over the entire working width of the weaving machine 2 ; in this case, the exit opening is directed approximately at right angles to the general extent of the warp.
  • the design of the local outlet is evident from FIGS. 2 and 3 .
  • the local outlet 22 comprises a box 30 of elongate form with uniform rectangular cross section over its longitudinal extent.
  • the box 30 is closed on all sides with the exception of the bottom surface forming the exit opening 32 .
  • a cylindrical connecting piece 36 for connection with the line 24 , which connecting piece is connected with the inner space 40 of the box via a circular inlet opening 38 (shown in broken lines in FIG. 3 ) of the same internal cross section.
  • the bottom surface and the top surface represent the long sides of the rectangular cross sectional shape of the box.
  • the inner space 40 contains distribution components to distribute uniformly the air flowing in through the inlet opening 38 over the surface of the exit opening 32 and to generate the displacement flow which is provided according to the invention.
  • distribution components comprise, seen in the direction of flow, a perforated sheet 42 which extends parallel to the top surface 34 , but at a spacing from the latter, over a central longitudinal region and the full width of the inner space 40 .
  • the distribution components are stacked in spaced relation in the direction of air flow.
  • the length of the perforated sheet 42 secured by means of bolts 44 to the top surface 34 of the box 30 is greater than the diameter of the inlet opening 38 , but smaller than the length of the inner space.
  • a further perforated sheet 46 which is secured to the side walls of the box 30 or is supported in an appropriate manner on the bottom surface.
  • the passage cross section formed by the performing of the perforated sheets 42 and 46 accounts for preferably between 35 and 45%, related to the surface area thereof.
  • an air-permeable mat 48 for example of an appropriate foam material, which mat is clamped between a peripheral flange 58 of the box and a grid 50 .
  • Mat 48 and grid 50 extend over the full length and width of the inner space.
  • the grid 50 which is formed, for example, by a wire grid of relatively large mesh width, is supported on a narrow frame 52 , which is provided at the bottom surface of the box.
  • the frame 52 limits the exit opening 32 by the length 54 and the width 56 .
  • the mat 48 is fitted in the box for example by demountability of the frame 52 , so that its accessibility for the purpose of exchange is possible at any time.
  • a foam material with a pressure loss of 15-20 Pa at 0.6 m/sec has proved to be suitable for the mat 48 .
  • the box 30 represents an air distributor 60 .
  • the described design and arrangement of the distribution components in this box give a distribution of the air in stages flowing in through the inlet opening 38 into the inner space 40 .
  • the perforated sheet 42 which, also acting as baffle plate, lies opposite the inlet opening, only a part of this air can pass through in the direction of the arrows 62 , while the remainder is deflected to opposite sides in the longitudinal direction of the inner space 40 with low pressure loss, without having to overcome an impediment to flow on the further path to the mat 48 , i.e. in the direction of the arrows 64 .
  • this partial stream In order to reduce the velocity in the partial stream flowing without deflection in the direction of the arrows 62 , this partial stream must still overcome the perforated sheet 46 .
  • the partial streams 62 and 64 thus arrive at approximately the same velocity at the mat 48 .
  • a fine distribution of the air takes place at the mat 48 and upon passing through the latter a piston-type displacement flow formed of the finest stream lines is created.
  • For the outlet velocity in the present context a restriction to values of between 0.5 and 0.8 m/sec is appropriate.
  • the quantities of air may be designed to be different, within certain limits, even in the case of the same dimensions of the air distributor 60 .
  • the air conditioning plant delivers conditioned air, which emerges from the local outlet 22 ( FIG. 1 ) formed by the air distributor 60 , as a piston-type displacement flow 70 , e.g. with an outlet velocity of 0.6 m/sec vertically downwards and in this case exhibits a width of for example 300 mm, depending upon the dimension 56 .
  • the displacement flow traverses the distance, amounting for example to 0.9 m, to the upper group of warp threads 20 ′ of the shed 20 in compact form, and impinges on said group upstream of the heald frame assembly 8 .
  • the air Upon impinging on said group as well as on the lower group of warp threads 20 ′′, the air is deflected at least as the major partial stream 72 towards the thread stop motions 6 and flows along the warp threads 18 counter to their direction of delivery.
  • a partial stream 74 flows in the shed region along the corresponding warp threads and flows away downwards between these.
  • both partial streams of this air create in the environment of the warp 16 a climate which is suitable for the transport and the processing, in that heat and dust are conducted away and the relative humidity is kept at an advantageous value.
  • the warp threads 18 are circumcirculated by the stream over a relatively long period of time, a direct moisture takeup also takes place, which has a favorable effect both for the weaving process and also for the water consumption. In particular, this applies to the influence of the partial stream 72 , which flows along the warp threads, envelops these and screens them off in relation to the surrounding air.
  • a spacing of approximately 1.2 m of the local outlet from the warp running therebelow represents an upper limit on economical grounds.
  • a floor opening 80 is provided, via which dust-laden air is transported away.
  • the arrangement of the local outlet 22 so that the displacement flow 70 impinges on the upper group of warp threads 20 ′ at an acute angle greatly favors the deflection of the same or the formation of a relatively large partial stream 72 and an orientation of the same parallel to the warp threads. Since an effective conditioning of the warp threads 18 can be achieved only over a sufficiently long period of action, this partial stream acts as its own conditioning medium. With the objective of a long period of action of the air streams 70 and 72 respectively, the arrangement of the air outlet 22 so that the stream 70 impinges on the warp 16 or the back shed 20 directly behind the heald frame assembly 8 is advantageous. On the other hand, in the case of such an arrangement an air build-up takes place at that side of the heald frame assembly which faces the back shed 20 , which air build-up assists the deflection of the partial stream 72 .
  • additional outlets similar to the local outlet 22 are to be provided for this purpose, which additional outlets are supplied from the air conditioning plant 26 .
  • these outlets are also to be provided in the form of elements separate from the weaving machine.
US08/977,915 1991-09-23 1992-09-22 Air distributor assembly and process for air conditioning a textile machine using a displacement type air flow system Expired - Lifetime USRE39655E1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH2815/91A CH684101A5 (de) 1991-09-23 1991-09-23 Verfahren und Vorrichtung zur Webmaschinenklimatisierung.
PCT/CH1992/000193 WO1993006281A1 (de) 1991-09-23 1992-09-22 Verfahren und vorrichtung zur webmaschinenklimatisierung

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
US08/050,432 Reissue US5472018A (en) 1991-09-23 1992-09-22 Air conditioning of a weaving machine with displacement type air flow stream

Publications (1)

Publication Number Publication Date
USRE39655E1 true USRE39655E1 (en) 2007-05-29

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Family Applications (2)

Application Number Title Priority Date Filing Date
US08/977,915 Expired - Lifetime USRE39655E1 (en) 1991-09-23 1992-09-22 Air distributor assembly and process for air conditioning a textile machine using a displacement type air flow system
US08/050,432 Ceased US5472018A (en) 1991-09-23 1992-09-22 Air conditioning of a weaving machine with displacement type air flow stream

Family Applications After (1)

Application Number Title Priority Date Filing Date
US08/050,432 Ceased US5472018A (en) 1991-09-23 1992-09-22 Air conditioning of a weaving machine with displacement type air flow stream

Country Status (8)

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US (2) USRE39655E1 (de)
EP (1) EP0558718B1 (de)
JP (1) JP2589653B2 (de)
CH (1) CH684101A5 (de)
DE (1) DE59209075D1 (de)
HK (1) HK1005780A1 (de)
SG (1) SG50528A1 (de)
WO (1) WO1993006281A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994024350A1 (de) * 1993-04-16 1994-10-27 Luwa Ag Anlage zum beeinflussen der umgebungsbedingungen von textilen verarbeitungsprozessen
US5910598A (en) * 1994-11-02 1999-06-08 Shofner Engineering Associates, Inc. Modular process zone and personnel zone environmental control with dedicated air jet cleaning
US5676177A (en) * 1994-11-02 1997-10-14 Shofner Engineering Associates, Inc. Method for optimally processing materials in a machine
US6128832A (en) * 1999-06-04 2000-10-10 Ltg Air Engineering, Inc. Method and system for providing conditioned air
US6820655B2 (en) * 2002-03-22 2004-11-23 Hans Adolf Beeh Loom and room conditioning system
DE10349396A1 (de) 2003-10-21 2005-06-16 Wiessner Gmbh Verfahren und Vorrichtung zum Konditionieren eines Prozesses
EP2228347A1 (de) 2009-03-07 2010-09-15 Luwa Air Engineering AG Verfahren zum weiteren Entwässern von Klärschlamm
EP3844331A1 (de) 2018-08-30 2021-07-07 Luwa Air Engineering AG Webmaschinenanordnung zur webmaschinenklimatisierung
CN109365131B (zh) * 2018-11-13 2020-05-12 南通华强布业有限公司 一种纺织机纺织尘收集装置
CN111270390A (zh) * 2020-04-08 2020-06-12 杭州源凯诚科技有限公司 一种回吸式的无尘纺织机

Citations (19)

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US2460150A (en) * 1944-11-17 1949-01-25 Schupp Arthur Apparatus for the cooling of heated objects
FR1486241A (fr) * 1966-07-08 1967-06-23 Svu Textilni Liberec Procédé et installation pour la climatisation de machines textiles ainsi que machine pourvue de ladite installation
US3391528A (en) * 1965-12-03 1968-07-09 John C. Shackelford Air handling and cleaning apparatus for machines
US3667133A (en) * 1970-04-09 1972-06-06 Fuller Co Method and apparatus for cooling cement clinker
US3744724A (en) * 1972-03-24 1973-07-10 Sulzer Ag Air distributing channel
DE2203900A1 (de) * 1972-01-25 1973-07-19
US3762143A (en) * 1969-06-10 1973-10-02 Park Cramer Ltd Apparatus for pneumatically cleaning open-end spinning machines
US3816987A (en) * 1970-09-15 1974-06-18 Sulzer Ag Air conditioning system for a textile machine
US4112663A (en) * 1976-07-06 1978-09-12 Vyzkumny Ustav Bavlnarsky Method of and apparatus for cooling spinning units of open-end spinning machines
US4196544A (en) * 1978-04-10 1980-04-08 General Mills, Inc. Apparatus and method for controlling plant growth with artificial light
GB2131936A (en) * 1982-12-17 1984-06-27 Nagema Veb K A cooling tunnel for articles which are coated with chocolate paste or similar pastes
EP0137056A1 (de) * 1983-08-30 1985-04-17 GebràœDer Sulzer Aktiengesellschaft Einrichtung zum Klimatisieren des Textilgutes in einer Webmaschine
US4881957A (en) * 1983-04-06 1989-11-21 Ppm, Inc. Air filtration units and methods employing dust as filtration media and air flow rate as a directly controlled parameter
US4976098A (en) * 1988-01-30 1990-12-11 Rieter Machine Works, Ltd. Method and apparatus for dissipating heat from a textile machine
US5121522A (en) * 1989-12-22 1992-06-16 Trutzschler Gmbh & Co., Kg Humidity and temperature air conditioning in a textile processing line
US5144781A (en) * 1987-11-12 1992-09-08 Heinrich Nickel Gmbh Double floor for removing air from rooms
US5157910A (en) * 1989-06-13 1992-10-27 Schubert & Salzer Maschinenfabrik Aktiengesellschaft Process and device for the air-conditioning of spinning material
DE4123451A1 (de) * 1991-07-16 1993-01-21 Stahlecker Fritz Spinnmaschine
US5505385A (en) * 1994-07-29 1996-04-09 Pneumafil Corporation Laminar air diffuser

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Publication number Priority date Publication date Assignee Title
US2460150A (en) * 1944-11-17 1949-01-25 Schupp Arthur Apparatus for the cooling of heated objects
US3391528A (en) * 1965-12-03 1968-07-09 John C. Shackelford Air handling and cleaning apparatus for machines
FR1486241A (fr) * 1966-07-08 1967-06-23 Svu Textilni Liberec Procédé et installation pour la climatisation de machines textiles ainsi que machine pourvue de ladite installation
US3762143A (en) * 1969-06-10 1973-10-02 Park Cramer Ltd Apparatus for pneumatically cleaning open-end spinning machines
US3667133A (en) * 1970-04-09 1972-06-06 Fuller Co Method and apparatus for cooling cement clinker
US3816987A (en) * 1970-09-15 1974-06-18 Sulzer Ag Air conditioning system for a textile machine
DE2203900A1 (de) * 1972-01-25 1973-07-19
US3744724A (en) * 1972-03-24 1973-07-10 Sulzer Ag Air distributing channel
US4112663A (en) * 1976-07-06 1978-09-12 Vyzkumny Ustav Bavlnarsky Method of and apparatus for cooling spinning units of open-end spinning machines
US4196544A (en) * 1978-04-10 1980-04-08 General Mills, Inc. Apparatus and method for controlling plant growth with artificial light
GB2131936A (en) * 1982-12-17 1984-06-27 Nagema Veb K A cooling tunnel for articles which are coated with chocolate paste or similar pastes
US4881957A (en) * 1983-04-06 1989-11-21 Ppm, Inc. Air filtration units and methods employing dust as filtration media and air flow rate as a directly controlled parameter
EP0137056A1 (de) * 1983-08-30 1985-04-17 GebràœDer Sulzer Aktiengesellschaft Einrichtung zum Klimatisieren des Textilgutes in einer Webmaschine
US4570682A (en) * 1983-08-30 1986-02-18 Sulzer Brothers Limited System for conditioning textile material in a weaving machine
US5144781A (en) * 1987-11-12 1992-09-08 Heinrich Nickel Gmbh Double floor for removing air from rooms
US4976098A (en) * 1988-01-30 1990-12-11 Rieter Machine Works, Ltd. Method and apparatus for dissipating heat from a textile machine
US5157910A (en) * 1989-06-13 1992-10-27 Schubert & Salzer Maschinenfabrik Aktiengesellschaft Process and device for the air-conditioning of spinning material
US5121522A (en) * 1989-12-22 1992-06-16 Trutzschler Gmbh & Co., Kg Humidity and temperature air conditioning in a textile processing line
DE4123451A1 (de) * 1991-07-16 1993-01-21 Stahlecker Fritz Spinnmaschine
US5505385A (en) * 1994-07-29 1996-04-09 Pneumafil Corporation Laminar air diffuser

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Dr.-Ing. Helmut Weinsdorfer, Ulrich Stark Webmaschinenentstaubung und Webmaschinenklimatisierung-ein Widerspruch 6.Weberei-Kolloquium-Die Peripherie beeinfusst den Nutzeffekt-16.und 17. Oktober 1990. *
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Also Published As

Publication number Publication date
EP0558718B1 (de) 1997-12-17
HK1005780A1 (en) 1999-01-22
EP0558718A1 (de) 1993-09-08
DE59209075D1 (de) 1998-01-29
WO1993006281A1 (de) 1993-04-01
US5472018A (en) 1995-12-05
CH684101A5 (de) 1994-07-15
JP2589653B2 (ja) 1997-03-12
SG50528A1 (en) 1998-07-20
JPH06502460A (ja) 1994-03-17

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Year of fee payment: 12

CC Certificate of correction
AS Assignment

Owner name: LUWA TEXTILE AIR ENGINEERING AG, SWITZERLAND

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:ZELLWEGER LUWA AG;REEL/FRAME:020360/0864

Effective date: 20070921