US3846618A - Electric heating apparatus for removing textile waste material - Google Patents

Electric heating apparatus for removing textile waste material Download PDF

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Publication number
US3846618A
US3846618A US00233107A US23310772A US3846618A US 3846618 A US3846618 A US 3846618A US 00233107 A US00233107 A US 00233107A US 23310772 A US23310772 A US 23310772A US 3846618 A US3846618 A US 3846618A
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US
United States
Prior art keywords
air
heater
housing
electrical
conduit
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
US00233107A
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English (en)
Inventor
J Henderlite
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.)
Air Knife Inc
Original Assignee
Air Knife Inc
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 Air Knife Inc filed Critical Air Knife Inc
Priority to US00233107A priority Critical patent/US3846618A/en
Priority to CA165,094A priority patent/CA987716A/en
Priority to JP2653773A priority patent/JPS5722866B2/ja
Priority to IT4868173A priority patent/IT982879B/it
Priority to FR7308380A priority patent/FR2175502A5/fr
Priority to CH353373A priority patent/CH551810A/de
Priority to GB1154373A priority patent/GB1423237A/en
Priority to DE2311922A priority patent/DE2311922A1/de
Priority to US00389899A priority patent/US3841911A/en
Application granted granted Critical
Publication of US3846618A publication Critical patent/US3846618A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/18—Arrangement or mounting of grates or heating means
    • F24H9/1854—Arrangement or mounting of grates or heating means for air heaters
    • F24H9/1863—Arrangement or mounting of electric heating means
    • F24H9/1872—PTC resistor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/24—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means incorporating means for heating the liquid or other fluent material, e.g. electrically
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H11/00—Arrangements for confining or removing dust, fly or the like
    • D01H11/005—Arrangements for confining or removing dust, fly or the like with blowing and/or suction devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H3/00—Air heaters
    • F24H3/02—Air heaters with forced circulation
    • F24H3/04—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element
    • F24H3/0405—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element using electric energy supply, e.g. the heating medium being a resistive element; Heating by direct contact, i.e. with resistive elements, electrodes and fins being bonded together without additional element in-between
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/40—Heating elements having the shape of rods or tubes
    • H05B3/54—Heating elements having the shape of rods or tubes flexible
    • H05B3/58—Heating hoses; Heating collars

Definitions

  • PATENTEDHOV 5 I974 lia ll llulll SHEET 2 0F 3 PATENTEDHU :914. 3,846,618
  • the present invention overcomes the difficulties and deficiencies of prior methods and apparatus from removing heat degradable textile waste material by use of a flowing stream of heated air which may readily penetrate into confined spaces and remove the waste material therefrom and-which does not damage the apparatus from which the tenaciously adhered heat degradable textile waste material is being removed.
  • operative interconnection with both the means by which the flowing stream of air is delivered and the electrical resistance heater is established and energization of the electrical heater in the absence of delivery of air is substantially precluded.
  • a further object of this invention is to provide, in a method of removing tenaciously adhered heat degradable textile waste material, for the self-limiting of the temperatures attained by an electrical resistance heater.
  • a flowing stream of air at a predetermined volume rate of flow is delivered to and through an electrical resistance heater having a positive temperature coefficient resistance element. Due to the variance in the resistance of the heater with temperature, the wattage of power consumed by the heater and thus the temperature attained by the heater have a tendency towards self-limitation. As the temperature of the heater rises and the wattage of power consumed is reduced, an equilibrium is reached which, with flow rates as provided by this invention, precludes destructive heating of the resistance element.
  • FIG. 1 is a perspective view of a first embodiment of apparatus in accordance with this invention
  • FIG. 2 is an elevation view of the apparatus of FIG. 1 with a coverplate removed to reveal components of the apparatus mounted within a housing;
  • FIG. 3 is an elevation view, partially in section, taken generally as indicated by the line 3-3 in FIG. 2',
  • FIG. 4 is a plan view, partially in section, through a portion of the apparatus of FIG. 1 taken generally as indicated by the line 4-4 in FIG. 1;
  • FIG. 5 is an enlarged elevation view, in section, through a portion of the apparatus shown in FIG. 4, taken generally as indicated by the line 5-5 in that figure;
  • FIG. 6 is a section view taken generally as indicated by the line 6-6 in FIG. 5;
  • FIG. 7 is an enlarged elevation view, in section, taken generally as indicated by the line 7-7 in FIG. 4;
  • FIG. 8 is a sectional view taken as indicated by the line 8-8 in FIG. 7;
  • FIG. 9 is a schematic drawing of the apparatus of FIG. 1;
  • FIG. 10 is a view similar to FIG. 1, showing a second embodiment of the apparatus of this invention.
  • FIG. 11 is a detail view showing a pressure responsive electrical switch means incorporated in the apparatus of FIG. 10.
  • FIG. 12 is a schematic diagram similar to FIG. 9 and showing the apparatus of FIG. 10.
  • FIGS. 1-9 is particularly intended for use in circumstances where electrical power is readily available at locations where the removal of tenaciously adhered heat degradable textile waste material is to be performed and incorporates an air compressor as a means for delivering a flowing stream of air.
  • the second embodiment of apparatus in accordance with this invention, as illustrated in FIGS. 10-12, is particularly contemplated as useful in circumstances where a central supply of compressed air is readily available at locations where the removal of tenaciously adhered heat degradable textile waste material is to be performed.
  • the embodiment of apparatus in accordance with this invention illustrated in FIGS. 10-12 is arranged for connection with such a factory air supply, as will be brought out more fully hereinafter.
  • the disclosure which follows will be directed first to the embodiment'of FIGS. 1-9 and will then turn to the embodiment of FIGS. 10-12.
  • an electrical cord reel 26 is mounted within the housing 21 to permit a power cord 28 to be withdrawn from the housing 21 and electrically connected with appropriate line source of electrical current.
  • electrical power is supplied to'the compressor 24 and to other circuit elements of the apparatus 20, under the control of the control means as will be described more fully hereinafter.
  • the electrical resistance heater means 30 has a metallic sheath 31 having mounted in one end thereof a ceramic core 32 (FIGS. 7 and 8).
  • the ceramic core 32 has a plurality of longitudinally directed openings extending therethrough,with a resistance wire 34 coiled within each of the passageways. Upon electrical energization of the resistance wire 34, the wire is raised to an elevated temperature for heating the air flowing therethrough.
  • the heater means 30 is arranged with an air flow entering section housed within the handle 29 andwith a heater section which extends forwardly from the handle 29 (FIG. 4).
  • a heater section which extends forwardly from the handle 29 (FIG. 4).
  • an operator manipulating the handle 29 so as to direct the flow of air issuing from the apparatus toward textile waste material to be removed is protected against contact with that portion of the heater means 30 which may attain an elevated temperature.
  • a provision is made for the attachment of a separable flow directing nozzle 35, by means of a compression nut 36 secured thereto, a compression union 38, and a compression nut 39 which is secured to an outlet tube 40 of the heater means 30.
  • electrical conductors 41, 42, 43 extend the length of the air conduit 25 and are held in wrapped relation thereto by a spiral wrapping 45 which extends thereabout.
  • control means are operatively interconnected with the compressor 24 which delivers air and with the electrical resistance heater 35 for coordinating electrical energization of the heater with delivery of the flowing stream of air.
  • control arrangement includes an electrical switch means 46 electrically connected between the power cord 28 and the compressor 24 and heater 30.
  • the electrical circuitry includes a fuse 48 for protecting against excessive current requirements and a pilot light 49 for indicating to an operator that the unit is operatmg.
  • control circuitry preferably includes means for varying at least one characteristic of the electrical current flowing to the electrical resistance heater.
  • a variable resistance 50 is inserted in the conductor 42 leading to the heater 30.
  • a thyristor circuit is employed to modulate the phase relation of electrical power delivered to the resistance heater in a manner known to persons familiar with such electronic devices.
  • such circuits are disclosed in Paragraph 9.4.2 of the SCR Manual, Fourth edition, published by the Semi-conductor Products Department of General Electric Company.
  • thermoplastic and nonthermoplastic textile waste materials may be removed.
  • the temperature of the heated air be at least about the softening temperature of the textile material.
  • the textile material includes or consists of non-thermoplastic material
  • heating of the air in accordance with this invention preferably follows the latter practice so as to be equally applicable to the removal of. thermoplastic and non-thermoplastic textile waste materials.
  • the wattage of the electrical resistance heater is determined from a formula in which kilowatts of power required equal the weight of air delivered per hour times 0.24 times the number of degrees F. by which the temperature of the air is raised divided by 3,4l2. It is preferred that the wattage'requirement for the heater be approximated from the formula Kilowatts CFM Temperature Rise Above Ambient/3,000.
  • the material from which the resistance wire 34 is formed is chosen from among those materials which have a positive temperature coefficient of resistance. That is, those materials which have an increasing resistance as the temperature of the material increases.
  • a resistance heater has a selflimiting characteristic in that the increasing resistance of the wire decreases the power required and flowing therethrough thereby reducing the wattage delivered to the flowing stream of air and limiting the upper temperature attained by the air.
  • the material from which the coils 34 of the heater are formed exhibits such a characteristic at temperatures of approximately l,200 F. and may be chosen from among alloys of nickel and platinum.
  • heated air is directed against waste material to be removed by passage from the nozzle means formed by the handle 29, heater 30 and outlet tube 35 with a velocity of at least about 8,000 feet per minute.
  • velocities when within volume and temperature ranges as described hereinabove, does not adversely effect textile apparatus such as bobbins, casters and the like from which tenaciously adhered heat degradable textile waste material is to be removed.
  • such velocities, volumes, and temperatures of heated air are effective to entirely remove such residues.
  • FIGS. 1-9 which is particularly intended for operation by connection to a source of electrical power
  • this invention also contemplates an alternative embodiment to be used where an external air supply is available.
  • FIGS. -12 Such a second embodiment is illustrated in FIGS. -12, where components comparable to those of the first embodiment described hereinabove are identified by same reference characters with the addition of prime notation.
  • the present disclosure will be directed particularly to the distinctions between the embodiments rather than repeating at length the common characteristics thereof.
  • the apparatus of FIGS. 10-12 includes an air supply conduit 51 provided with an appropriate coupling 52 for attachment with an external air supply such as is conventionally found in textile mills and the like.
  • Air entering the apparatus 20' through the conduit 51 is filtered in a filter 54 and is delivered to a pressure regulator 55 having a manually operable handle 56 extending through the housing 20'. By manipulation of the handle 56, the pressure at which air is delivered to the conduit and thus to the heater means may be selected.
  • a pressure responsive switch means generally indicated at 58 (FIGS. 11 and 12) which is reponsive to the presence of a flowing stream of air passing through conduit 25 to the heater means 30'.
  • an associated electrical contact set 59 In the presence of the flowing stream of air, an associated electrical contact set 59 is closed to permit energization of the heater 30'. Absent the flowing stream of air, contact set 59 is opened to preclude energization of the electrical heater.
  • Apparatus comprising: manually portable housing means for enclosing components of the apparatus and having handle means for accommodating ready portability to a location of use, electrical supply conducting means extensible from within said housing means for delivering electrical current through said housing means, elongate flexible air supply conduit means extending from said housing means and connectable with an external supply of pressurized air for delivering through said housing means a flowing stream of air having a predetermined volume rate of flow, manipulable handle means for manual control over the direction of air, elongate flexible air delivery conduit means extending between said housing means and said handle means for conducting the flowing stream of air from said housing means to said handle means in substantially unimpeded flow and for permitting application thereof at locations remote from said housing means, electrical resistance heater means extending from said handle means and interposed in the flow path of said flowing stream of air for heating air to an elevated temperature, electrical delivery conducting means extending between said housing means and said handle means for conducting electrical current to said heater means, means for binding said delivery conducting means and said delivery conduit means together into a single bundle extending

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Preliminary Treatment Of Fibers (AREA)
US00233107A 1972-03-09 1972-03-09 Electric heating apparatus for removing textile waste material Expired - Lifetime US3846618A (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
US00233107A US3846618A (en) 1972-03-09 1972-03-09 Electric heating apparatus for removing textile waste material
CA165,094A CA987716A (en) 1972-03-09 1973-03-02 Apparatus and method for removing textile waste material
JP2653773A JPS5722866B2 (de) 1972-03-09 1973-03-06
FR7308380A FR2175502A5 (de) 1972-03-09 1973-03-08
IT4868173A IT982879B (it) 1972-03-09 1973-03-08 Dispositivo e procedimento per la rimozione di detriti tessili
CH353373A CH551810A (de) 1972-03-09 1973-03-09 Verfahren und vorrichtung zum entfernen von stark haftendem, durch waerme beeinfussbarem textilem abfallmaterial.
GB1154373A GB1423237A (en) 1972-03-09 1973-03-09 Apparatus and method for removing textile waste materials
DE2311922A DE2311922A1 (de) 1972-03-09 1973-03-09 Verfahren und vorrichtung zum entfernen textilen abfallmaterials
US00389899A US3841911A (en) 1972-03-09 1973-08-20 Method for removing heat degradable textile waste material from apparatus used in textile operations

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US00233107A US3846618A (en) 1972-03-09 1972-03-09 Electric heating apparatus for removing textile waste material
US00389899A US3841911A (en) 1972-03-09 1973-08-20 Method for removing heat degradable textile waste material from apparatus used in textile operations

Publications (1)

Publication Number Publication Date
US3846618A true US3846618A (en) 1974-11-05

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US00233107A Expired - Lifetime US3846618A (en) 1972-03-09 1972-03-09 Electric heating apparatus for removing textile waste material
US00389899A Expired - Lifetime US3841911A (en) 1972-03-09 1973-08-20 Method for removing heat degradable textile waste material from apparatus used in textile operations

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Application Number Title Priority Date Filing Date
US00389899A Expired - Lifetime US3841911A (en) 1972-03-09 1973-08-20 Method for removing heat degradable textile waste material from apparatus used in textile operations

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US (2) US3846618A (de)
CA (1) CA987716A (de)
CH (1) CH551810A (de)
DE (1) DE2311922A1 (de)
FR (1) FR2175502A5 (de)
GB (1) GB1423237A (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4528440A (en) * 1983-08-30 1985-07-09 Naoki Ishihara Hand held hot air dryer with retractable cord
US4557205A (en) * 1983-08-26 1985-12-10 J. Strobel & Sohne Gmbh & Co. Fur sewing machine with heated air blower
US4667658A (en) * 1979-11-27 1987-05-26 Sunset Ltd. Thermotherapy technique

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1129411B (it) * 1980-03-07 1986-06-04 Sant Andrea Novara Officine Stiratoio per nastri di fibre tessili provvisto di una testa a pettini rotanti
DE4122864C2 (de) * 1991-07-11 2003-06-12 Dietrich Martina Verfahren und Vorrichtung zum Reinigen und Schälen von Früchten

Citations (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US927173A (en) * 1908-05-20 1909-07-06 Fried Krupp Germaniawerft Ag Electric heater.
DE344635C (de) * 1919-03-16 1921-11-28 Erich F Huth G M B H Dr Elektrische Heissluftdusche
US1455238A (en) * 1920-12-07 1923-05-15 Herman J Bosch Drying appliance
GB317624A (en) * 1928-07-30 1929-08-22 Rupert Kenley Webster Improvements in or relating to air heating and supply systems
CH146392A (de) * 1929-01-22 1931-04-15 Hardmeier Hermann Warmluftapparat für Zahnärzte.
US1839119A (en) * 1931-12-29 Apparatus for cleansing units of automotive vehicles
FR752165A (fr) * 1933-03-09 1933-09-18 Séchoir électrique à résistance incassable et mise en contact automatique
US2028095A (en) * 1934-05-14 1936-01-14 Tulcran Inc Air heating device
US2577269A (en) * 1949-11-16 1951-12-04 Bell & Richardson Inc De Flameless hot gas torch
US2730609A (en) * 1951-09-18 1956-01-10 Yorkshire Copper Works Ltd Blowpipes
US2778919A (en) * 1954-12-30 1957-01-22 Gerd Lester Apparatus for shaping or welding thermoplastic materials
US2859327A (en) * 1957-09-03 1958-11-04 Stanley J Kaminsky Device for producing hot air
GB905176A (en) * 1960-02-18 1962-09-05 Gen Electric Co Ltd Improvements in or relating to electrically operated fuel igniters
US3094606A (en) * 1958-10-29 1963-06-18 Edwin W Ferris Electric paint removing device
US3270182A (en) * 1964-03-26 1966-08-30 Hynes Electric Heating Company High temperature fluid heater
US3304625A (en) * 1964-05-25 1967-02-21 Gen Electric Portable hair dryer with heaters on both ends of flexible hose
US3356830A (en) * 1963-07-05 1967-12-05 Schleer Process and apparatus for soldering in the presence of hydrogen gas
US3371188A (en) * 1965-08-25 1968-02-27 Henes Mfg Company Inc Electrically heated torch for elevating the temperature and directing the flow of a gas
US3523827A (en) * 1968-05-06 1970-08-11 Monsanto Co Spinneret reconditioning
US3668370A (en) * 1969-11-06 1972-06-06 Electronized Chem Corp Portable electric heat gun

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3305184A (en) * 1964-10-12 1967-02-21 Parks Cramer Co Process for cleaning automatic textile winding machines
US3429745A (en) * 1965-09-01 1969-02-25 Parks Cramer Co Method of removing fiber waste from spinning frames

Patent Citations (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1839119A (en) * 1931-12-29 Apparatus for cleansing units of automotive vehicles
US927173A (en) * 1908-05-20 1909-07-06 Fried Krupp Germaniawerft Ag Electric heater.
DE344635C (de) * 1919-03-16 1921-11-28 Erich F Huth G M B H Dr Elektrische Heissluftdusche
US1455238A (en) * 1920-12-07 1923-05-15 Herman J Bosch Drying appliance
GB317624A (en) * 1928-07-30 1929-08-22 Rupert Kenley Webster Improvements in or relating to air heating and supply systems
CH146392A (de) * 1929-01-22 1931-04-15 Hardmeier Hermann Warmluftapparat für Zahnärzte.
FR752165A (fr) * 1933-03-09 1933-09-18 Séchoir électrique à résistance incassable et mise en contact automatique
US2028095A (en) * 1934-05-14 1936-01-14 Tulcran Inc Air heating device
US2577269A (en) * 1949-11-16 1951-12-04 Bell & Richardson Inc De Flameless hot gas torch
US2730609A (en) * 1951-09-18 1956-01-10 Yorkshire Copper Works Ltd Blowpipes
US2778919A (en) * 1954-12-30 1957-01-22 Gerd Lester Apparatus for shaping or welding thermoplastic materials
US2859327A (en) * 1957-09-03 1958-11-04 Stanley J Kaminsky Device for producing hot air
US3094606A (en) * 1958-10-29 1963-06-18 Edwin W Ferris Electric paint removing device
GB905176A (en) * 1960-02-18 1962-09-05 Gen Electric Co Ltd Improvements in or relating to electrically operated fuel igniters
US3356830A (en) * 1963-07-05 1967-12-05 Schleer Process and apparatus for soldering in the presence of hydrogen gas
US3270182A (en) * 1964-03-26 1966-08-30 Hynes Electric Heating Company High temperature fluid heater
US3304625A (en) * 1964-05-25 1967-02-21 Gen Electric Portable hair dryer with heaters on both ends of flexible hose
US3371188A (en) * 1965-08-25 1968-02-27 Henes Mfg Company Inc Electrically heated torch for elevating the temperature and directing the flow of a gas
US3523827A (en) * 1968-05-06 1970-08-11 Monsanto Co Spinneret reconditioning
US3668370A (en) * 1969-11-06 1972-06-06 Electronized Chem Corp Portable electric heat gun

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4667658A (en) * 1979-11-27 1987-05-26 Sunset Ltd. Thermotherapy technique
US4557205A (en) * 1983-08-26 1985-12-10 J. Strobel & Sohne Gmbh & Co. Fur sewing machine with heated air blower
US4528440A (en) * 1983-08-30 1985-07-09 Naoki Ishihara Hand held hot air dryer with retractable cord

Also Published As

Publication number Publication date
CH551810A (de) 1974-07-31
FR2175502A5 (de) 1973-10-19
DE2311922A1 (de) 1973-09-20
CA987716A (en) 1976-04-20
US3841911A (en) 1974-10-15
GB1423237A (en) 1976-02-04

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