EP3141655A1 - Seche-linge - Google Patents

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Publication number
EP3141655A1
EP3141655A1 EP15382449.5A EP15382449A EP3141655A1 EP 3141655 A1 EP3141655 A1 EP 3141655A1 EP 15382449 A EP15382449 A EP 15382449A EP 3141655 A1 EP3141655 A1 EP 3141655A1
Authority
EP
European Patent Office
Prior art keywords
drum
airflow
drying machine
laundry drying
machine according
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.)
Withdrawn
Application number
EP15382449.5A
Other languages
German (de)
English (en)
Inventor
Romualdo AGILAGA SADURNI, Sr.
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.)
Fagor Electrodomesticos SCL
Original Assignee
Fagor Electrodomesticos SCL
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 Fagor Electrodomesticos SCL filed Critical Fagor Electrodomesticos SCL
Priority to EP15382449.5A priority Critical patent/EP3141655A1/fr
Publication of EP3141655A1 publication Critical patent/EP3141655A1/fr
Withdrawn legal-status Critical Current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
    • D06F58/20—General details of domestic laundry dryers 
    • 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
    • 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
    • D06F58/10—Drying cabinets or drying chambers having heating or ventilating means
    • 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
    • D06F58/20—General details of domestic laundry dryers 
    • D06F58/26—Heating arrangements, e.g. gas heating equipment

Definitions

  • the present invention relates to laundry drying machines, particularly to laundry dryers as such and with washing machines comprising drying functions.
  • a laundry dryer is a machine that has become indispensable in most households in recent years, so much so that the functions of a laundry dryer have also been incorporated in a conventional washing machine.
  • a laundry dryer In general, a laundry dryer consists of passing a hot airflow through the drum to extract moisture from the clothes contained in said drum.
  • laundry dryers There are generally two types of laundry dryers depending on the treatment performed on the air leaving the drum. In this sense there are, for example, condensation laundry dryers, also referred to as heat pump dryers, comprising a heat exchanger in which moisture contained in the airflow leaving the drum is condensed and extracted, and it is heated again to reintroduce said airflow into the drum.
  • condensation laundry dryers also referred to as heat pump dryers
  • clothes dryers comprising a heating element for heating the airflow intended for circulating through the drum. The airflow at the outlet of the drum is discharged to the outside, although there are variants in which part of said leaving airflow is used, being reintroduced into the circuit.
  • US2012246962A1 describes a laundry dryer of the type comprising a heat pump.
  • Said dryer comprises a cabinet inside which a rotating drum, containing the clothes to be dried, is arranged.
  • a main airflow is circulated through the drum in a closed circuit going through the heat pump.
  • the main airflow is cooled in an evaporator in said heat pump to condense and extract moisture from the air leaving the drum, and said main airflow is again heated in a compressor before redirect said airflow to the drum again.
  • the dryer of US2012246962A1 also comprises an inlet port arranged on the surface of the cabinet allowing the entry of an additional airflow which is discharged through the lower part of the dryer. Said airflow discharges the heat generated in the inner devices of the dryer, such as in the heat pump, for example.
  • the object of the invention is to provide a laundry drying machine as defined in the claims.
  • the laundry drying machine of the invention comprises a cabinet inside which a rotating drum is arranged.
  • the machine also comprises a main air circuit through which a main airflow coming from the outside circulates and is conditioned by a heating element before being directed to the drum so that it dries the clothes contained in the drum, and at least one additional air circuit through which an additional airflow also coming from the outside circulates. Said additional airflow is directed to the drum after circulating through the inside of the machine, so that said additional airflow is mixed with the main airflow in the drum.
  • the residual heat generated by the machine itself is used, on one hand, for drying the clothes contained in the drum, thereby contributing to energy savings of the machine, and the inside of the machine is cooled, on the other hand, preventing the outer walls of the drying machine from reaching high temperatures, being able to dispense with thermal insulators or, where appropriate, being able to use thermal insulators that are less thick and/or have lower insulation properties.
  • the laundry drying machine 1 comprises a cabinet 2 inside which a rotating drum 3 containing the clothes to be dried is arranged.
  • the machine 1 also comprises a main air circuit through which a main airflow F coming from the outside circulates and is conditioned by a heating element 4 which increases the temperature of said airflow F before being directed to the drum 3 for drying the clothes.
  • the heating element 4 can comprise at least one resistor, a gas burner or a battery powered by vapor or thermal oil.
  • the machine 1 also comprises at least one additional air circuit through which an additional airflow f' also coming from the outside circulates. Said additional airflow f' is directed to the drum 3 after circulating through the inside of the machine 1, so that said additional airflow f' is mixed with the main airflow F in the drum 3, as shown in the schematic depiction of Figure 1 .
  • the additional airflow f' is conditioned, i.e., heated, by the heat accumulated inside the machine 1, and not by the heating element 4 directly.
  • the inside of the machine 1 is cooled, on one hand, preventing the outer walls of the machine 1 from reaching high temperatures without having to use the thermal insulators used in the drying machines of the state of the art, and the residual heat generated by the machine 1 itself is used, on the other hand, for drying the clothes contained in the drum 3, thereby contributing to the energy savings of the machine 1.
  • the additional airflow f' coming from the outside i.e., airflow at room temperature, absorbs at least part of the heat accumulated inside the cabin 2, whereby preventing the outer walls of the machine 1 from heating up, and is directed to the drum 3 for being mixed with the main airflow F, increasing the efficiency of the machine 1.
  • the machine 1 also comprises a recirculation circuit through which a recirculated airflow f, i.e., at least part of the main airflow F leaving the drum 3 and returning again to the drum 3, circulates, said recirculated airflow f also being mixed with the main airflow F in the drum 3, as schematically shown in Figure 1 .
  • a recirculated airflow f i.e., at least part of the main airflow F leaving the drum 3 and returning again to the drum 3
  • circulates said recirculated airflow f also being mixed with the main airflow F in the drum 3, as schematically shown in Figure 1 .
  • a gate 14 arranged at the outlet of the drum 3 in a discharge conduit 15 manages the amount of air f to be recirculated, allowing the passage of more, less or zero amount of air f, depending on the moisture and/or other parameters of the airflow leaving the drum 3.
  • the machine 1 also comprises a housing 5 surrounding the drum 3 and inside which said drum 3 is housed.
  • said housing 5 would resemble a tub, which is preferably cylindrical, but which in a laundry dryer as such does not have to be cylindrical.
  • the additional air circuit of the invention comprises at least one chamber 6 which is delimited by at least part of the outer wall 5a of the housing 5 and a surrounding wall 7 surrounding at least part of said outer wall 5a, as seen in Figure 1 and in more detail in Figure 1A .
  • said chamber 6 comprises at least one inlet conduit E arranged in the surrounding wall 7, as shown in Figure 1A , to allow the entry of the additional airflow f' from the outside, and at least one outlet conduit S arranged in the outer wall 5a of the housing 5 to allow the passage of said additional airflow f' to the drum 3.
  • the chamber 6 comprises an inlet conduit E and an outlet conduit S although the chamber 6 being able to comprise several inlet conduits and several outlet conduits, or the inlet conduit E having an elongated shape, extending along said outer wall 5a or transversely thereto, is not ruled out.
  • the chamber 6 is arranged in the upper part of the drum 3, preferably close to the heating element 4, and extends along the drum 3, as seen in Figure 1 .
  • the additional airflow f' coming from the outside at room temperature is considered “cold air” and absorbs during the passage thereof the heat accumulated inside the machine 1, mainly due to the heat given off by the heating element 4 and by the passage of the conditioned main airflow F, and it is directed to the drum 3 through the outlet conduit S for being mixed with the main airflow F.
  • the side walls of the machine 1 are thereby prevented from heating up, since the additional airflow f' acts as a thermal insulator.
  • said residual heat is used at the same time for drying the clothes contained in the drum 3 such that the performance of the machine 1 is optimized, contributing to energy savings.
  • one of the walls of the chamber 6 is formed by the outer wall 5a of the housing 5, and the other wall is the surrounding wall 7 which surrounds at least part of said outer wall 5a, as seen in Figure 1A .
  • the walls of the drum 3 comprise a plurality of holes (not shown in the drawings) to allow air to circulate through the inside thereof.
  • the additional air circuit also comprises two lateral chambers 8 and 8'.
  • Each chamber 8 and 8' is arranged on one side of the drum 3, as seen in Figure 2 , and like in the first chamber 6 described, they also extend along the drum 3.
  • the outlet conduit S also extends along the drum 3, as seen in Figure 4 .
  • the first chamber 6 described is arranged in the upper part of the drum 3, preferably between the two lateral chambers 8 and 8', as shown in Figure 2 .
  • the additional air circuit also comprises a rear chamber 9 arranged in the rear part of the drum 3, as shown in the drawings 1 and 4.
  • said rear chamber 9 is rectangular although it could also be circular or the like.
  • the inlet conduits E of the lateral chambers 8 and 8' and/or of the rear chamber 9 are arranged close to the lower part of the drum 3 and the corresponding outlet conduits S are arranged close to the upper part of the drum 3, as seen in Figures 1 , 2 and 4 .
  • the corresponding additional airflow f' entering at room temperature through the lower part thereby absorbs the residual heat from inside the machine 1 as it moves upward and enters the drum 3 through the upper part, being mixed with the main airflow F, as schematically shown in Figures 1 , 2 and 4 .
  • the corresponding additional airflow f' is thereby prevented from mixing with the airflow leaving the drum 3, preventing the corresponding additional flow f' from being able to be discharged without the residual heat from inside the machine 1 having been absorbed.
  • the chamber 6 arranged in the upper part of the drum 3 prevents the upper wall of the cabinet 2 from reaching high temperature values
  • the lateral chambers 8 and 8' prevent the side walls of the cabinet 2 from reaching high temperature values
  • the rear chamber 9 prevents the rear wall of the cabinet 2 from reaching high temperature values.
  • the additional air conduit of the preferred embodiment of the invention comprises a front chamber 10 arranged in the front part of the cabinet 2, as shown in Figures 1, 1 Band 4.
  • Said front chamber 10 is delimited by at least part of the outer wall 12 of the front part of the cabinet 2 and a surrounding wall 12' which surrounds at least part of said outer wall 12 and which is arranged inside the machine 1, as seen in Figure 1B .
  • the door 11 for accessing the drum 3 is arranged in the front part of the machine 1, as seen in Figures 1 , 1B and 4 .
  • said door 11 is of the type comprising a porthole and at least one hinge on one side (not shown in the drawings) which allows opening and closing the door 11 by pivoting about said hinge.
  • the door 11 comprises a protuberance, i.e., the porthole, preferably cylindrical, which projects towards the inside of the drum 3 and which is housed in an opening 16, preferably cylindrical-shaped, arranged in the front part of the cabinet 2 when the door 11 is closed.
  • the door 11 also comprises an area having a larger diameter than the protuberance, cooperating with the outer wall 12 of the front part of the cabinet 2, providing a closure area 11 a, as shown in Figure 1B .
  • the front chamber 10 of the invention comprises at least one inlet conduit E' arranged in the outer wall 12 of the front part of the cabinet 2 but located outside said closure area 11 a to allow the entry of the corresponding additional airflow f', and at least one outlet conduit S' arranged also in said outer wall 12 but inside the closure area 11a.
  • the outlet conduit S' is ring-shaped and surrounds the opening 16 in which the protuberance of the door 11 is housed, said additional airflow f' entering through the gap existing between the protuberance of the door 11 and the opening 16 of the front wall 12.
  • said additional airflow f' could be directly directed to the drum 3 if the outlet conduit S' were comprised in the surrounding wall 12'.
  • the front chamber 10 comprises two inlet conduits E', one arranged above the drum 3 and another below same, as shown in Figures 1 and 1B .
  • Said inlet conduits E' are in the form of a groove and each conduit E' preferably extends along said front wall 12, as shown in Figure 3 .
  • said Figure 3 shows by means of arrows the flow direction of the air f' entering through the inlet conduits E' and leaving through the ring-shaped outlet conduit S'.
  • both lateral chambers 8 and 8' are communicated with the rear chamber 9, as seen in Figures 2 and 43, such that lateral flows f' can be mixed with flow f' coming from the rear chamber 9 before being directed to the drum 3.
  • the machine 1 also comprises at least one fan 13 arranged in the lower area of the cabinet 2, preferably at the outlet of the drum 3, to force the main airflow F.
  • said fan 13 also forces the corresponding additional airflows f', and is even suitable for forcing the recirculated airflow f. Therefore, one fan 13 alone is capable of forcing all the airflows which must be circulated through the inside of the machine 1, i.e., the main airflow F, the recirculated airflow f and the corresponding additional airflows f'.
EP15382449.5A 2015-09-14 2015-09-14 Seche-linge Withdrawn EP3141655A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP15382449.5A EP3141655A1 (fr) 2015-09-14 2015-09-14 Seche-linge

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP15382449.5A EP3141655A1 (fr) 2015-09-14 2015-09-14 Seche-linge

Publications (1)

Publication Number Publication Date
EP3141655A1 true EP3141655A1 (fr) 2017-03-15

Family

ID=54252230

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15382449.5A Withdrawn EP3141655A1 (fr) 2015-09-14 2015-09-14 Seche-linge

Country Status (1)

Country Link
EP (1) EP3141655A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108330658A (zh) * 2018-04-16 2018-07-27 吴国良 一种衣物快速晾晒方法
WO2022143775A1 (fr) * 2020-12-30 2022-07-07 追觅科技(上海)有限公司 Dispositif de séchage

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2540955A (en) * 1945-09-19 1951-02-06 Hamilton Mfg Co Laundry drier
AU484389B2 (en) * 1972-07-14 1975-01-16 New World Applicances Pty. Ltd Gas clothes dryers
US3995988A (en) * 1975-05-23 1976-12-07 Challenge-Cook Bros., Incorporated Fuel saving apparatus and method for textile drying and finishing
US4137645A (en) * 1976-08-20 1979-02-06 W. M. Cissell Manufacturing Company Laundry dryer
EP1426480A2 (fr) * 2002-11-27 2004-06-09 Lg Electronics Inc. Sèche-linge et passage de refroidissement pour condensateur correspondant
JP2010125064A (ja) * 2008-11-27 2010-06-10 Inamoto Seisakusho:Kk 繊維製品の乾燥機
EP2202347A1 (fr) * 2008-12-22 2010-06-30 BSH Bosch und Siemens Hausgeräte GmbH Séchoir doté d'une pompe à chaleur et d'une teneur en air ambiant et son procédé de fonctionnement
US20120246962A1 (en) 2011-03-29 2012-10-04 Lee Junseok Clothes dryer

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2540955A (en) * 1945-09-19 1951-02-06 Hamilton Mfg Co Laundry drier
AU484389B2 (en) * 1972-07-14 1975-01-16 New World Applicances Pty. Ltd Gas clothes dryers
US3995988A (en) * 1975-05-23 1976-12-07 Challenge-Cook Bros., Incorporated Fuel saving apparatus and method for textile drying and finishing
US4137645A (en) * 1976-08-20 1979-02-06 W. M. Cissell Manufacturing Company Laundry dryer
EP1426480A2 (fr) * 2002-11-27 2004-06-09 Lg Electronics Inc. Sèche-linge et passage de refroidissement pour condensateur correspondant
JP2010125064A (ja) * 2008-11-27 2010-06-10 Inamoto Seisakusho:Kk 繊維製品の乾燥機
EP2202347A1 (fr) * 2008-12-22 2010-06-30 BSH Bosch und Siemens Hausgeräte GmbH Séchoir doté d'une pompe à chaleur et d'une teneur en air ambiant et son procédé de fonctionnement
US20120246962A1 (en) 2011-03-29 2012-10-04 Lee Junseok Clothes dryer

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108330658A (zh) * 2018-04-16 2018-07-27 吴国良 一种衣物快速晾晒方法
CN108330658B (zh) * 2018-04-16 2020-09-18 绍兴纤逸纺织科技有限公司 一种衣物快速晾晒方法
WO2022143775A1 (fr) * 2020-12-30 2022-07-07 追觅科技(上海)有限公司 Dispositif de séchage

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