US3601903A - Tumbler dryer - Google Patents

Tumbler dryer Download PDF

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Publication number
US3601903A
US3601903A US39976A US3601903DA US3601903A US 3601903 A US3601903 A US 3601903A US 39976 A US39976 A US 39976A US 3601903D A US3601903D A US 3601903DA US 3601903 A US3601903 A US 3601903A
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US
United States
Prior art keywords
tumbler
drum
housing
dryer
hot air
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
US39976A
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English (en)
Inventor
Benjamin H Freze
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.)
CHALLENGE INDUSTRIES LP
Original Assignee
Challenge Cook Bros 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 Challenge Cook Bros Inc filed Critical Challenge Cook Bros Inc
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Publication of US3601903A publication Critical patent/US3601903A/en
Anticipated expiration legal-status Critical
Assigned to CHALLENGE INDUSTRIES, L.P. reassignment CHALLENGE INDUSTRIES, L.P. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: CHALLENGE-COOK BROS., INCORPORATED
Expired - Lifetime legal-status Critical Current

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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F58/00—Domestic laundry dryers
    • D06F58/02—Domestic laundry dryers having dryer drums rotating about a horizontal axis
    • D06F58/04—Details 

Definitions

  • a tumbler dryer which includes a cylindrical housing having an opening at each end and arranged to be tilted selectively in opposite directions so that either opening may serve as an inlet or outlet for clothes.
  • the dryer also includes a perforated cylindrical rotatable drum having conical ends confronting the ends of the housing.
  • the dryer further includes a hot air supply system that introduces a predetermined percentage of hot air into the top of the drum and the remaining air equally into the conical ends of the drum; the air being extracted from the bottom side ofthe drum.
  • the present invention is directed toa tumbler dryer which is particularly adapted, but not limited, to tumbler dryers of large capacity, and is summarized in the following objects:
  • the housing and the rotatable tumbler drum are essentially coaxial; the housing is provided with openings at each axial end and is tiltable about either of two axes disposed adjacent its ends so that clothes may be received or discharged from either end.
  • FIG. 1 is a side view of the tumbler dryer, shown in its operating position.
  • FIG. 2 is a fragmentary view, taken from the side opposite from FIG. ll.
  • FIG. 3 is a fragmentary side view, corresponding to FIG. 1;. but showing the dryer in one of its tilted positions for the pur-- pose of receiving a charge of material to be dried.
  • FIG. 4. is a fragmentary side view, corresponding to FIG. 3. showing the dryer in one of its tilted positions for the purpose of discharging its contents.
  • FIG. 5 is a side view of the tumbler drum, indicating the supporting and guide wheels therefore, the housing and base of the tumbler dryer shown by broken lines.
  • FIG. 6 is an enlarged fragmentary sectional view, taken within Circle 6 of FIG. 5, showing particularly that portion of the tumbler drum through which hot air is introduced and showing fragmentarily a tumbler rib.
  • FIG. 7 is an enlarged end elevational view of the tumbler dryer, taken from 7-7 of FIG. 1.
  • FIG. 8 is a further enlarged fragmentary sectional view, taken through 8-8 of FIG. 7, showing one of the door latching mechanisms.
  • FIG. 9 is a sectional view, taken through 9-9 of FIG. 5, showing the tumbler drum in end elevation and the surrounding housing and base portion of the dryer partially in section and partially in elevation.
  • FIG. 10 is an enlarged fragmentary sectional view, taken within Circle 10 of FIG. 11.
  • FIG. 11 is an enlarged transverse sectional view, with the base structure shown fragmentarily, taken through ll-of FIG. 2.
  • FIG. 12 is an enlarged fragmentary sectional view, taken within Circle 12 ofFIG. 9.
  • FIG. 13 is a further enlarged fragmentary sectional view, taken through 13-13 of FIG. 12.
  • FIG. 14 is an enlarged longitudinal sectional view, taken through 14-14 ofFIG. ll.
  • FIG. 15 is a fragmentary longitudinal sectional view, taken through 15-15 of FIG. 7.
  • FIG. 16 is a fragmentary partialplan, partial sectional view, taken through 16-16 of FIG. 11.
  • FIG. 17 is a fragmentary sectional view, taken from 17-17 of FIG. 14.
  • FIG. 18 is an enlarged fragmentary sectional view, taken within Circle 18 of FIG. 16.
  • FIG. 19 is a fragmentary sectional view, taken through 19- 19 of FIG. 18.
  • the tumbler dryer includes a fixed base frame structure II, which is generally rectangular in plan, and includes an extension 2 at one side. Above the extension the base frame structure is provided with a pair of pivot brackets 3. At the opposite side of the frame structure 1, there is provided a second pair of pivot brackets 4. I
  • the base frame structure 1 supports a tilting base frame 5, which is essentially rectangular in plan.
  • the tilting base frame is provided with a pair of pivot bars 6 which mate with the pivot brackets 3 and a pair of pivot bars 7 which mate with the pivot brackets 4.
  • the mating pivot brackets and pivot bars form separable hinges so that either end of the base frame may be raised from one set of brackets and pivot bars while the tiltable base frame is pivoting about the axis defined by the other set of pivot brackets and pivot bars.
  • the base frame 5 may be tilted in either direction, as 'illustrated in FIGS. 3 and 4.
  • a pair of lifting units 8 which serve to tilt the frame 5 in the manner illustrated in FIG. 4.
  • a lifting unit 9 Adjacent the opposite side of the fixed base frame structure 1 is a lifting unit 9 which functions to tiltthe base frame 5 in the manner illus' trated in FIG. 2.
  • a housing 10 Supported on the tilting base frame 5 is a housing 10 of generally cylindrical form, disposed with its axis transverse to the axes defined by the pivot brackets and pivot bars.
  • the housing 10 includes end walls I1, having central openings 12 which are circular except for a straight or chord portion at their lower sides.
  • a tumbling drum 13 including a cylindrical main portion formed by a plurality of perforated bands 14,'separated by reinforcing rings 15. At the axial extremities of thecylindrical portion, the drum is pro vided with a pair of circular drive and supporting tracks 16. Beyond the tracks 16, the tumbling drum converges forming conical end bands 17, terminating in end rings 18.
  • the tumbling drum is supported by two pair of drive wheels 19, each pair mounted on a shaft 20.
  • the drive wheels extend through slots provided in the housing 10.
  • the shafts 20 are located externally of the housing and are journaled in bearings 21 supported from the tilting base frame 5.
  • the shafts 20 are connected by sprocket and chain drives 22, to a common gear reduction unit 23, which is joined by a belt drive 24 to a motor 25.
  • the upper portion of the housing structure 10 is partially encased by and forms the inner wall of a semicircular hot air duct 28.
  • the hot air duct extends tangentially downward and forms an entrance portion 29, the lower end of which confronts a hot air supply means 30, which may include the burner or other heating unit, not shown, and which is supplied with ambient air from an inlet duct 31.
  • the hot air supply means is fixed in the base frame structure 1. When the tumbler dryer is in its operating position, such as shown in FIGS. 1, 2 and 3, the entrance portion 29 is spaced from the hot air supply means forming an auxiliary air inlet 32.
  • the housing structure 10 is provided at its upper side with a longitudinal slot 33 for the purpose of supplying a predetermined portion of the hot air passing in the duct 23 into the upper side of the tumbling drum 13, as shown best in FIGS. 11 and 16.
  • the arcuate upper portion of the hot air duct extends axially with respect to the housing and forms semicircular radially inwardly directed inlet slots 34 which communicate with dis-' tributor chambers 35 located between the housing and the conical end bands 17 of the tumbler drum 13, as shown par-- ticularly in FIGS. 9, 15, 16 and 18.
  • the perforated conical end bands 17 form moving radially inner walls of the distributor chambers and the circumferential extremities of the chambers are defined by end partitions 36 supported from the housing 10 and extending inwardly into confronting relation with the tumbling drum.
  • Two sets of partitions are provided and extend from end to end of the housing, their radially inner margins conforming to the tumbling drums.
  • the portions of the partitions which form'the ends of the distributor chambers are provided with seal strips 37 which ride on the conical surfaces of the end bands 17, as indicated particularly in FIGS. 18 and 19.
  • end seals 37a extending between the partitions 36, as shown in FIGS. 17 and 18.
  • the seals bear against the end rings 18 of the tumbler drum 13.
  • a pair of semicircular seals 38 secured to the housing and bearing yieldably against the axial extremities of the supporting tracks 16, as illustrated in FIGS. 12 and 13.
  • a laterally directed discharge duct 39 having an upwardly directed intake end 40 confronting the lower side of the housing 10 at its central portion.
  • a discharge chamber 41 Formed at the lower side of the housing 10 is'a discharge chamber 41 of rectangular configuration, the opposite walls of which converge downwardly and register with the intake end 40, as shown in FIGS. 9 and 14.
  • the upper margins of the circumferential sides of the discharge chamber 41 are provided with barrier strips 42 of flexible material of which yieldably engage the and conform to the tumbler drum 13. These barriers extend to the seals 38 and are indicated particularly in FIGS. 9, 10 and 11.
  • the tumbling drum 13 is provided with a set of longitudinal ly extending major internal ribs 43, interspersed by minor internalribs 44 to produce a tumbling action.
  • major internal ribs 43 are provided with radially inwardly directed extensions 45 which cooperate with the conical end bands 17 to work the contents of the tumbler drum axially inward, and also to keep the perforations in the bands free so that incoming air from the distributor chambers 35 will not be impeded.
  • Each door includes complementary door sections 47, 48 and 49 joined by hinges 50 which incorporate seals 51, Also, each door is provided with a peripheral seal 52.
  • the upper door section is provided with an upward extension 53, the upper extremity of which receives a pivot bar 54 supported from the corresponding end wall 11 by bearing brackets 55.
  • the pivot bar extends laterally and its extreme end is supported by a third bearing bracket 56.
  • Connected to the extreme end of the pivot bar is a link 57 which is joined to a lever 58 supported intermediate its ends by a second link 59.
  • the second link is supported on a pivot bracket 60 mounted on a bar 61 extending longitudinally across and supported by the outer wall of the hot air duct 18, as indicated particularly in FIG. 1 through 4 and 7.
  • the mounting bar 61 supports a pair of thrust units 62, one for each door.
  • Each thrust unit includes a cylinder 63 supported on the mounting bar by means of a pivot bracket 64 and an extension shaft 65 attached to a corresponding lever 58.
  • each keeper plate is engaged by a latch element 67 pivotally connected to a mounting bar 68 secured to the corresponding end wall 11.
  • Each latch element is connected by an adjustable link 69 to a lever 70, which in turn is connected to an operating unit 71 which includes a cylinder 72 secured to the backside of the corresponding end wall 11 radially outward from the housing 10 and a shaft 73, the shaft being attached to the lever 70.
  • the housing 10 and the tumbling drum 13 are disposed in a horizontal position, as represented in FIGS. 1 and 2, and the doors are secured in their closed position.
  • Hot air is generated in the supply chamber 30 by a suitable burner or heater unit, now shown.
  • the air passes upwardly therefrom into the tangential portion 29 of the hot air duct 28.
  • Auxiliary air enters through the inlet 32 and is entrained in the air passing upwardly from the supply chamber 30.
  • the hot air is carried over the top portion of the housing.
  • a predetermined portion of the air is delivered into the tumbling drum 18 through the longitudinal slot 33 and the remaining hot air is delivered through the inlet slots 35 and distributor chambers 35 into the perforated conical end bands 17 of the tumbler drum.
  • the air discharges from the lower portion of the tumbler drum between the barrier strips 42 and passes through the discharge chamber 41 into the discharge duct 39.
  • the clothes or other contents of the tumbler dryer tend to be worked from the axial ends towards the central portion of the drum. Also, some counter-migration of the articles being dried occurs so that each article is completely exposed to the circulating hot air. More particularly, the extended end portions of the major tumbling ribs 43 prevent the articles from restricting the flow of air from the distributor chambers 35 into the tumbling dryer even though the dryer is loaded excessively.
  • the tumbler dryer may be adapted to any desired loading and unloading procedure; for example, the dryer may be loaded and unloaded from one end by tilting the dryer between the position shown in FIGS. 3-and 4 in which case only one door is used. Or, the dryer may be tilted to either position shown in FIGS. 3 and 4, in which case, the lower most door is first opened to permit discharge of the contents; then, this door is closedand the door at the raised side of the tumbler is opened to receive a new charge of clothing or the like.
  • a tumbler dryer comprising:
  • a. a housing including parallel ends having coaxial inlet-outlet openings and doors therefor;
  • a perforated cylindrical tumbler drum disposed for rotation in coaxial relation to the openings, the tumbler drum including end portions terminating at the peripheries of the openings;
  • each inlet chamber having a movable wall formed by the perforated end portion of the tumbler
  • a hot air supply duct communicating with the chambers for the introduction of hot air into the extreme ends of the tumbler drum;
  • a tumbler dryer as defined in claim 1, wherein:
  • said inlet duct includes an air inlet slit disposed along the top side of the tumbler drum forthe introduction of a predetermined portion of air distributed along the top side thereof.
  • a tumbler dryer as defined in claim 1, wherein:
  • the perforated end portions of the tumbler drum are conical and converge axially outward therefrom.
  • a tumbler dryer as defined in claim 1, which further comprises:
  • each of the doors closing the inlet-outlet openings comprises:
  • a tumbler dryer as defined in claim 1, which further comprises:
  • said separable pivot means including elements carried by the base structure and the housing;
  • a tumbler dryer comprising:
  • thrust units carried by the base frame and connected to the housing to effect selective pivotal movement of the housing about either of the transverse axes;
  • a cylindrical tumbler drum perforated end-to-end and disposed in substantially coaxial relation with the housmeans engaging the periphery of the tumbler drum to effect rotation of the drum within the housing;
  • inletoutlet doors at each axial end of the housing confronting the ends of the tumbler drum;
  • hot air inlet chambers at the upper portion of the housing and adjacent the axial extremities thereof communicating directly with the perforated end portions of the tumbler drum;
  • a tumbler dryer as defined in claim 7, wherein:
  • the perforated end portions of the tumbler drum which receive the hot air are conical and diverge toward the central region of the drum.
  • a tumbler dryer as defined in claim 8, which further comprises:
  • each of the doors comprises:
  • a tumbler dryer as defined in claim 7, wherein:
  • the hot air supply means includes an upwardly directed hot air supply fixed in the base frame below one side of the housing;
  • a hot air duct carried by the housing extending upwardly from the hot air supply and partially wrapping the housing, the entrance end of the hot air duct being spaced from the supply to permit entrainment of surrounding air, the duct being tiltable with the housing away from the hot air supply.
  • a tumbler dryer comprising:
  • a tumbler drum including a perforated cylindrical main portion, and at least one perforated end portion of reduced diameter to receive air radially therein for axial flow into the drum;
  • a housing enclosing the drum including the ends thereof and having means for rotating the drum about its longitudinal axis;
  • c. means defining an air inlet duct for delivery of air radially into the perforated end portion of the drum;
  • d. means'defining an air outlet for extracting air from the main portion of the drum
  • a tumbler dryer as defined in claim 12, which further comprises:
  • a tumbler dryer as defined in claim 12, wherein:
  • a. perforated reduced end portions are provided at both ends of the drum;

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
  • Drying Of Solid Materials (AREA)
US39976A 1970-05-25 1970-05-25 Tumbler dryer Expired - Lifetime US3601903A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US3997670A 1970-05-25 1970-05-25

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US3601903A true US3601903A (en) 1971-08-31

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Application Number Title Priority Date Filing Date
US39976A Expired - Lifetime US3601903A (en) 1970-05-25 1970-05-25 Tumbler dryer

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Country Link
US (1) US3601903A (de)
JP (1) JPS5131528B1 (de)
CA (1) CA927592A (de)
DE (1) DE2124456C3 (de)
FR (1) FR2093705A5 (de)
GB (1) GB1291405A (de)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3815257A (en) * 1973-04-04 1974-06-11 Challenge Cook Bros Inc Continuous laundry dryer
US4268247A (en) * 1979-05-24 1981-05-19 Challenge-Cook Bros., Incorporated Method for drying fabrics
US4507080A (en) * 1983-07-22 1985-03-26 Challenge Cook Bros., Inc. Laundry dryer
GB2220470A (en) * 1988-06-08 1990-01-10 Passat Maschinenbau Gmbh Dewatering centrifuge
EP2034075A1 (de) 2007-09-04 2009-03-11 Coramtex S.r.l. Maschine zur Stoffbehandlung mit einer Trommeldrehung um eine Achse, die nicht parallel zur geometrischen Trommelachse verläuft
EP2034076A1 (de) 2007-09-04 2009-03-11 Coramtex S.r.l. Maschinen und Verfahren zur durchgehenden Behandlung von strangförmigen Stoff
US7836607B2 (en) * 2004-06-05 2010-11-23 Lg Electronics Inc. Drum of laundry dryer
US8661707B2 (en) * 2003-05-23 2014-03-04 Bsh Bosch Und Siemens Hausgeraete Gmbh Laundry drier

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011103021B4 (de) * 2011-05-24 2013-07-04 Mineralit Gmbh Trommeltrockner
CN104266464B (zh) * 2014-09-16 2016-05-18 齐齐哈尔齐三机床有限公司 一种种子干燥机

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3067986A (en) * 1957-11-18 1962-12-11 Joann Grantham Laundry apparatus
US3121000A (en) * 1960-11-09 1964-02-11 Philco Corp Laundry dryer or washer-dryer
US3419969A (en) * 1967-08-23 1969-01-07 Challenge Cook Bros Inc Tumbler dryer

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB920052A (de) *
US3043015A (en) * 1958-03-27 1962-07-10 Gen Motors Corp Domestic appliance
JPS423427Y1 (de) * 1964-09-16 1967-02-28

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3067986A (en) * 1957-11-18 1962-12-11 Joann Grantham Laundry apparatus
US3121000A (en) * 1960-11-09 1964-02-11 Philco Corp Laundry dryer or washer-dryer
US3419969A (en) * 1967-08-23 1969-01-07 Challenge Cook Bros Inc Tumbler dryer

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3815257A (en) * 1973-04-04 1974-06-11 Challenge Cook Bros Inc Continuous laundry dryer
US4268247A (en) * 1979-05-24 1981-05-19 Challenge-Cook Bros., Incorporated Method for drying fabrics
US4507080A (en) * 1983-07-22 1985-03-26 Challenge Cook Bros., Inc. Laundry dryer
GB2220470A (en) * 1988-06-08 1990-01-10 Passat Maschinenbau Gmbh Dewatering centrifuge
GB2220470B (en) * 1988-06-08 1992-02-19 Passat Maschinenbau Gmbh Dewatering centrifuge
US8661707B2 (en) * 2003-05-23 2014-03-04 Bsh Bosch Und Siemens Hausgeraete Gmbh Laundry drier
US7836607B2 (en) * 2004-06-05 2010-11-23 Lg Electronics Inc. Drum of laundry dryer
EP2034075A1 (de) 2007-09-04 2009-03-11 Coramtex S.r.l. Maschine zur Stoffbehandlung mit einer Trommeldrehung um eine Achse, die nicht parallel zur geometrischen Trommelachse verläuft
EP2034076A1 (de) 2007-09-04 2009-03-11 Coramtex S.r.l. Maschinen und Verfahren zur durchgehenden Behandlung von strangförmigen Stoff

Also Published As

Publication number Publication date
JPS5131528B1 (de) 1976-09-07
GB1291405A (en) 1972-10-04
DE2124456A1 (de) 1971-12-09
CA927592A (en) 1973-06-05
DE2124456C3 (de) 1975-05-22
DE2124456B2 (de) 1974-09-26
FR2093705A5 (de) 1972-01-28

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Owner name: CHALLENGE INDUSTRIES, L.P., DISTRICT OF COLUMBIA

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:CHALLENGE-COOK BROS., INCORPORATED;REEL/FRAME:005184/0056

Effective date: 19880815