US3636639A - Dryer - Google Patents

Dryer Download PDF

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Publication number
US3636639A
US3636639A US876984A US3636639DA US3636639A US 3636639 A US3636639 A US 3636639A US 876984 A US876984 A US 876984A US 3636639D A US3636639D A US 3636639DA US 3636639 A US3636639 A US 3636639A
Authority
US
United States
Prior art keywords
drum
air
casing
sheet
fan
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
US876984A
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English (en)
Inventor
Fredrik Adolf Schuurink
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of US3636639A publication Critical patent/US3636639A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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

Definitions

  • This invention relates to a dryer and more particularly to a dryer for laundry, having a drum rotatable about an axis in a stationary casing, in which at least a portion of the drying air before entering the drum is passed by a fan along a heating device.
  • the outer encasing is heated by the heating device, this not only being disagreeable but also reduces the efficiency of the device.
  • the general object of the invention is to remove this disadvantage.
  • the heating device is provided between two sheets located inside the casing, said-sheets being cooled by air passing said sheets.
  • one of the sheets can be fixed to the casing and the other sheet to the drum.
  • the invention can also be applied with advantage to a dryer already having a high efficiency, in which the drying air is supplied to an enclosure surrounding the fan.
  • This fan blows the air through the central portion of one of the drums walls and the drum is provided with apertures to discharge the drying air, the drying air being brought back into the enclosure of the fan through a narrow opening at the rear end of the enclosure which empties into a duct communicating with the atmosphere.
  • a discharge opening to the atmosphere is provided in the path along which the air is brought back through the casing and has, in this case, a sheet fixed to the casing which forms the rear wall of said return path and also forms together with the rear end of the enclosure, the narrow opening.
  • the sheet fixed to the drum forms with the sheet fixed to the casing a first passage and the sheet fixed to the drum forms with the rear wall of the casing a second passage, both passages communicating with the atmosphere as well as with the space inside the enclosure of the fan.
  • the single FIGURE is a vertical sectional view parallel with the axis of a preferred embodiment.
  • a drum 1 of the dryer rotatable about its horizontal axis has in its front wall 2 a filling opening 3, the rear wall 4 being formed as a frustum of a cone.
  • a pressure fan 5 with an enclosure 6, said fan supported by bearing in said rear wall 4 and adapted to blow air with a certain overpressure through said enclosure 6 into the drum 1.
  • the air is discharged from the drum 1 through apertures 7 in the front wall 2 along side the filling opening 3 and is then passed through the spaces between the portion of the front wall 2 of the drum 1 provided with apertures 7 and the wall 8 of the stationary casing, between the cylindrical wall 9 of the drum 1 and the wall 10 of the casing, and between the rear wall 4 of the drum and a sheet 11 fixed to the casing.
  • the air then passes to an annular slit 12 between the rear end of the enclosure 6 and the inner edge 13 of the sheet 11. From there the air passes again through the enclosure 6 into the drying space.
  • a sheet 16 is fixed to the drum 1, e.g., by means of connecting ribs 14 which run between the enclosure 6 and the bearing 15 of the drum, the sheet 16 being spaced from the rear of the sheet 11. Between sheets 11 and [6 a heating device 17 is provided. The space between the sheets 11 and 16 communicates at one side with the atmosphere through an opening 20 and at the other side with the space inside the enclosure 6.
  • openings 19 (for discharge) and 20 (for entering air) are shown only for the purposes of convenient illustration and could be located elsewhere, preferably not next to each other, in a preferred embodiment.
  • a dryer especially for laundry, having a drum rotatable about an axis in a stationary casing, a fan to force at least a part of the drying air before entering the drum along a heating device, the heating device being located between two sheets located inside the casing, one of the sheets being fixed to the casing and the other sheet to the drum, the drying air being supplied to an enclosure surrounding the fan which blows the air through the central portion of one of the drum walls, the drum being provided with apertures to discharge the drying air, the drying air flowing back into the enclosure of the fan through a narrow opening at the rear end of the enclosure which is also connected to a duct communicating with the atmosphere through a discharge opening in the path along which the air is brought back through the casing, the sheet fixed to the casing forming one wall of said return path and forming together with the rear end of the enclosure the narrow opening, the sheet fixed to the drum forming with the sheet fixed to the casing the rear wall of the casing a second passage, both passages communicating with the atmosphere as well as with the space inside the
  • a dryer especially for laundry, comprising:
  • g. means defining a second air passage between said second sheet and a wall of said casing

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Drying Of Solid Materials (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
US876984A 1968-11-21 1969-11-14 Dryer Expired - Lifetime US3636639A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL6816657A NL6816657A (it) 1968-11-21 1968-11-21

Publications (1)

Publication Number Publication Date
US3636639A true US3636639A (en) 1972-01-25

Family

ID=19805223

Family Applications (1)

Application Number Title Priority Date Filing Date
US876984A Expired - Lifetime US3636639A (en) 1968-11-21 1969-11-14 Dryer

Country Status (5)

Country Link
US (1) US3636639A (it)
ES (1) ES374099A1 (it)
FR (1) FR2023788A1 (it)
GB (1) GB1243556A (it)
NL (1) NL6816657A (it)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007049191A1 (en) * 2005-10-25 2007-05-03 Arcelik Anonim Sirketi A dryer
CN114318807A (zh) * 2020-09-30 2022-04-12 青岛海尔洗衣机有限公司 干衣机
CN114318803A (zh) * 2020-09-30 2022-04-12 青岛海尔洗衣机有限公司 干衣机

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1024157B (it) * 1974-12-18 1978-06-20 Smeg Elettrodonestici S P A Macchina lavabiaucheria con dispositivo asciugatore
US4268247A (en) 1979-05-24 1981-05-19 Challenge-Cook Bros., Incorporated Method for drying fabrics
FR2585740B1 (fr) * 1985-07-30 1988-05-13 Ciapem Machine a laver et/ou a secher le linge munie d'un dispositif de condensation d'humidite.
US4665628A (en) * 1986-03-31 1987-05-19 Raytheon Company Recuperative clothes dryer with enhanced recirculation and air flow

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2486058A (en) * 1945-03-16 1949-10-25 American Machine & Metals Air drying tumbler for laundry
US2587646A (en) * 1946-12-12 1952-03-04 Hamilton Mfg Co Drier
US3270436A (en) * 1963-08-26 1966-09-06 Fairgrieve & Son Ltd Clothes drier
US3429056A (en) * 1967-11-30 1969-02-25 Gen Electric Clothes dryer with selective clutch for drum rotation

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2486058A (en) * 1945-03-16 1949-10-25 American Machine & Metals Air drying tumbler for laundry
US2587646A (en) * 1946-12-12 1952-03-04 Hamilton Mfg Co Drier
US3270436A (en) * 1963-08-26 1966-09-06 Fairgrieve & Son Ltd Clothes drier
US3429056A (en) * 1967-11-30 1969-02-25 Gen Electric Clothes dryer with selective clutch for drum rotation

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007049191A1 (en) * 2005-10-25 2007-05-03 Arcelik Anonim Sirketi A dryer
CN114318807A (zh) * 2020-09-30 2022-04-12 青岛海尔洗衣机有限公司 干衣机
CN114318803A (zh) * 2020-09-30 2022-04-12 青岛海尔洗衣机有限公司 干衣机

Also Published As

Publication number Publication date
NL6816657A (it) 1970-05-25
GB1243556A (en) 1971-08-18
ES374099A1 (es) 1972-04-01
FR2023788A1 (it) 1970-08-21

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