EP2169106A2 - Household clothes drying device - Google Patents

Household clothes drying device Download PDF

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Publication number
EP2169106A2
EP2169106A2 EP09170964A EP09170964A EP2169106A2 EP 2169106 A2 EP2169106 A2 EP 2169106A2 EP 09170964 A EP09170964 A EP 09170964A EP 09170964 A EP09170964 A EP 09170964A EP 2169106 A2 EP2169106 A2 EP 2169106A2
Authority
EP
European Patent Office
Prior art keywords
air
drying device
clothes drying
drying
exhaust structure
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Withdrawn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
EP09170964A
Other languages
German (de)
French (fr)
Other versions
EP2169106A3 (en
Inventor
Rodrigo Georgi
Shengchao Mao
Wenfeng Pang
Zhihua Yan
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.)
BSH Hausgeraete GmbH
Original Assignee
BSH Bosch und Siemens Hausgeraete GmbH
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 BSH Bosch und Siemens Hausgeraete GmbH filed Critical BSH Bosch und Siemens Hausgeraete GmbH
Publication of EP2169106A2 publication Critical patent/EP2169106A2/en
Publication of EP2169106A3 publication Critical patent/EP2169106A3/en
Withdrawn legal-status Critical Current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 
    • 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 
    • D06F58/24—Condensing arrangements

Definitions

  • the present invention relates to a clothes drying device and, in particular, to a condensing-type clothes drying device.
  • Household clothes drying devices (such as clothes drying machines or clothes washing and drying machines) are generally classified into water condensing type, air condensing type, and mixed water-air condensing type clothes drying devices in accordance with the condensing method.
  • the water condensing type clothes drying device uses water as the condensing medium to condense the water carried by the drying air, so as to remove the moisture absorbed into the clothes during the washing process; while the air condensing type clothes drying device uses the external air as the condensing medium, and the mixed water-air condensing type clothes drying device uses the mixture of water and cold air as the condensing media.
  • the air condensing type and the mixed water-air condensing type clothes drying devices are more economic and practical, because no additional consumption of condensing water is needed during the drying process.
  • European Patent Application No. EP 1 925 714 A1 and German Patent No. DE 1 610 090 A1 disclose a household clothes drying machine, which clothes drying machine comprises an air inlet provided in the front or on the back of the machine and an air exhaust provided opposite to the air inlet, so that the air outside the machine (hereinafter referred to as "cold air") is sucked into the machine via the air inlet and discharged out of the machine via the air exhaust.
  • cold air the air outside the machine
  • neither of the above patent or patent application has provided detailed description of the structure of the air exhaust, while it is just the structure of the air exhaust which greatly affects the heat exchange between the cold air sucked from outside and the drying air circulating within the clothes drying machine.
  • an object of the present invention is to provide a household clothes drying device for improving the condensing efficiency thereof.
  • one embodiment of the present invention is a household clothes drying device, with its rear side closed by a backboard, comprising a drying air circuit wherein the drying air circulates to remove the moisture contained in the clothes; condensing means, which condensing means condenses with cold air the moisture carried by the drying air; and an air exhaust structure, which air exhaust structure is provided on the backboard for introducing the air discharged from the condensing means to the outside of the device; wherein the air exhaust structure comprises a plurality of substantially upright openings.
  • said drying air circuit is a closed circuit, so as to avoid the debris carried by the external air from entering into the drying air circuit and damaging other elements and parts provided in the drying air circuit, or re-contaminating the clothes, and also to avoid the occurrence of the problem of uncertain drying effects caused by the entering of the external air.
  • said air exhaust structure is integral with the backboard, so as to effectively reduce the production costs.
  • said air exhaust structure is provided on the top right part of the backboard to ensure sufficient strength of the backboard.
  • said plurality of openings are provided on a slope of the backboard, so as to make the cold air discharged from the air exhaust structure more evenly distributed at the openings, and in turn to increase the air circulating speed.
  • said plurality of openings are shaped as successive steps along the slope with respect to the air flow direction.
  • any of said plurality of openings is provided substantially perpendicular to the flow direction of the cold air discharged from the air exhaust structure, so as to reduce the resistance of the air exhaust structure itself to the cold air as much as possible and therefore, to further increase the circulating speed of the cold air and to further improve the condensing efficiency.
  • the household clothes drying device is a clothes drying machine or a clothes washing and drying machine.
  • the clothes drying device 1 can be a clothes drying machine or a clothes washing and drying machine, and comprises a rotary tub 2 for receiving clothes to be washed and/or dried.
  • the circumference of the rotary tub 2 is formed in advance with a number of through holes, which are contained in an outer tub 3.
  • One side of said clothes drying device 1 is provided with a clothes introducing opening 4, which clothes introducing opening 4 is closed by a door 5 provided on a casing 6 of said clothes drying device 1, and the back of said clothes drying device 1 is closed by a backboard 7.
  • the clothes drying device 1 utilizes two air circuits, one is a drying air circuit as indicated by the arrow signs in Fig. 1 ; and the other is a condensing air circuit as indicated by the arrow signs in Figs. 2 and 3 .
  • heating means 9 provided in the drying air circuit is used to heat the drying air under the effects of air-blowing means 8, the heated drying air is introduced into the rotary tub 2 which is provided in advance with a number of through holes for contacting with the clothes in the rotary tub 2 placed therein by the user, then the drying air is discharged into condensing means 10 via an air exhaust provided at an appropriate position on the outer tub 3, and the moisture contained in the clothes which is carried away by the drying air is condensed into water under the effects of the condensing means 10. Then the drying air is re-sucked into the heating means 9 and heated under the effects of the air-blowing means 8 and enters into the next cycle. Under the effects of the continuous circulation of the drying air, the moisture contained in the clothes is gradually removed, and the clothes are gradually dried.
  • Said condensing means 10 can be air condensing means which only utilize air as the condensing medium, or air-water condensing means which utilize a mixture of air and water as the condensing media. As shown in Fig. 2 in conjunction with Fig. 1 , one end of said condensing means 10 is connected to an air inlet 11, the cold air around the device is sucked into the device under the effects of a blower 15 via the air inlet 11; and the other end of said condensing means 10 is directly or indirectly in communication with the air exhaust structure 12. The cold air enters into the condensing means via the air inlet 11 to condense the drying air which is circulating in the drying air circuit, and then it is discharged out of the device 1.
  • the condensing means 10 is preferably independent of the drying air circuit, that is so say, the cold air for condensing will not flow into the circuit where the drying air is circulating to mix with the drying air.
  • the condensing means 10 can be designed to mix said cold air for condensing, so as to improve the heat exchange efficiency to a certain extent.
  • the air exhaust structure 12 comprises a plurality of openings 13 for introducing the air discharged from the condensing means 10 into the external space of the device 1.
  • Said plurality of openings 13 are provided substantially upright on the top right of the backboard 7.
  • said plurality of openings 13 are integrally formed with the backboard 7.
  • the surface 14 on which the plurality of openings 13 are located is a convex slope, so as to make the air flow relatively smooth; and more preferably, the plurality of openings 13 are shaped as successive steps along the surface 14 with respect to the air flow direction, wherein the cross section of each of the openings 13 is substantially perpendicular to the air flow direction, so as to make the air flow more smoothly, and at the same time to reduce the resistance by the opening 13 itself to the air flow as much as possible.
  • the condensing effects of the condensing means 10, or the heat exchange between the cold air and the drying air is significantly improved, so that the drying efficiency of the clothes drying device according to the present invention is greatly improved.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
  • Drying Of Solid Materials (AREA)

Abstract

A household clothes drying device with its rear side closed by a backboard, comprising a drying air circuit wherein the drying air circulates to remove the moisture in the washed clothes; condensing means, which condensing means condenses with cold air the moisture carried by the drying air; and an air exhaust structure, which air exhaust structure is provided on the backboard for introducing the air discharged from the condensing means to the outside of the device; wherein the air exhaust structure comprises a plurality of substantially upright openings. In this way, said cold air can be smoothly discharged via the openings of the air exhaust structure and the distribution of the cold air is made relatively even, so that the condensing effects of the condensing device are significantly improved.

Description

    Technical field
  • The present invention relates to a clothes drying device and, in particular, to a condensing-type clothes drying device.
    • Background art
  • Household clothes drying devices (such as clothes drying machines or clothes washing and drying machines) are generally classified into water condensing type, air condensing type, and mixed water-air condensing type clothes drying devices in accordance with the condensing method. Just as the names imply, the water condensing type clothes drying device uses water as the condensing medium to condense the water carried by the drying air, so as to remove the moisture absorbed into the clothes during the washing process; while the air condensing type clothes drying device uses the external air as the condensing medium, and the mixed water-air condensing type clothes drying device uses the mixture of water and cold air as the condensing media. In comparison with the water condensing type clothes drying device, the air condensing type and the mixed water-air condensing type clothes drying devices are more economic and practical, because no additional consumption of condensing water is needed during the drying process.
  • European Patent Application No. EP 1 925 714 A1 and German Patent No. DE 1 610 090 A1 disclose a household clothes drying machine, which clothes drying machine comprises an air inlet provided in the front or on the back of the machine and an air exhaust provided opposite to the air inlet, so that the air outside the machine (hereinafter referred to as "cold air") is sucked into the machine via the air inlet and discharged out of the machine via the air exhaust. However, neither of the above patent or patent application has provided detailed description of the structure of the air exhaust, while it is just the structure of the air exhaust which greatly affects the heat exchange between the cold air sucked from outside and the drying air circulating within the clothes drying machine.
    • Contents of the invention
  • Aiming at the above problem, an object of the present invention is to provide a household clothes drying device for improving the condensing efficiency thereof.
  • To achieve the above object, one embodiment of the present invention is a household clothes drying device, with its rear side closed by a backboard, comprising a drying air circuit wherein the drying air circulates to remove the moisture contained in the clothes; condensing means, which condensing means condenses with cold air the moisture carried by the drying air; and an air exhaust structure, which air exhaust structure is provided on the backboard for introducing the air discharged from the condensing means to the outside of the device; wherein the air exhaust structure comprises a plurality of substantially upright openings. In this way, the cold air can be smoothly discharged via the openings of the air exhaust structure and the distribution of the cold air is relatively even, so that the condensing effects of the condensing means are significantly improved.
  • As a preferred embodiment of the present invention, said drying air circuit is a closed circuit, so as to avoid the debris carried by the external air from entering into the drying air circuit and damaging other elements and parts provided in the drying air circuit, or re-contaminating the clothes, and also to avoid the occurrence of the problem of uncertain drying effects caused by the entering of the external air.
  • As another preferred embodiment of the present invention, said air exhaust structure is integral with the backboard, so as to effectively reduce the production costs.
  • As another preferred embodiment of the present invention, said air exhaust structure is provided on the top right part of the backboard to ensure sufficient strength of the backboard.
  • As another preferred embodiment of the present invention, said plurality of openings are provided on a slope of the backboard, so as to make the cold air discharged from the air exhaust structure more evenly distributed at the openings, and in turn to increase the air circulating speed.
  • As another preferred embodiment of the present invention, said plurality of openings are shaped as successive steps along the slope with respect to the air flow direction.
  • As another preferred embodiment of the present invention, any of said plurality of openings is provided substantially perpendicular to the flow direction of the cold air discharged from the air exhaust structure, so as to reduce the resistance of the air exhaust structure itself to the cold air as much as possible and therefore, to further increase the circulating speed of the cold air and to further improve the condensing efficiency.
  • As another preferred embodiment of the present invention, the household clothes drying device is a clothes drying machine or a clothes washing and drying machine.
    • Description of the accompanying drawings
    • Fig. 1 is a cross-sectional view of the clothes drying device according to an embodiment of the present invention.
    • Fig. 2 is a rear view of the clothes drying device as shown in Fig. 1.
    • Fig. 3 is an enlarged schematic diagram of the cross section of the part indicated by "C" in Fig. 2.
    Particular embodiments
  • Referring to Fig. 1, which is a schematic diagram of the clothes drying device 1 according to an embodiment of the present invention, the clothes drying device 1 can be a clothes drying machine or a clothes washing and drying machine, and comprises a rotary tub 2 for receiving clothes to be washed and/or dried. The circumference of the rotary tub 2 is formed in advance with a number of through holes, which are contained in an outer tub 3. One side of said clothes drying device 1 is provided with a clothes introducing opening 4, which clothes introducing opening 4 is closed by a door 5 provided on a casing 6 of said clothes drying device 1, and the back of said clothes drying device 1 is closed by a backboard 7.
  • To realize the drying procedure, the clothes drying device 1 utilizes two air circuits, one is a drying air circuit as indicated by the arrow signs in Fig. 1; and the other is a condensing air circuit as indicated by the arrow signs in Figs. 2 and 3. During the operation of the drying procedure, heating means 9 provided in the drying air circuit is used to heat the drying air under the effects of air-blowing means 8, the heated drying air is introduced into the rotary tub 2 which is provided in advance with a number of through holes for contacting with the clothes in the rotary tub 2 placed therein by the user, then the drying air is discharged into condensing means 10 via an air exhaust provided at an appropriate position on the outer tub 3, and the moisture contained in the clothes which is carried away by the drying air is condensed into water under the effects of the condensing means 10. Then the drying air is re-sucked into the heating means 9 and heated under the effects of the air-blowing means 8 and enters into the next cycle. Under the effects of the continuous circulation of the drying air, the moisture contained in the clothes is gradually removed, and the clothes are gradually dried.
  • Said condensing means 10 can be air condensing means which only utilize air as the condensing medium, or air-water condensing means which utilize a mixture of air and water as the condensing media. As shown in Fig. 2 in conjunction with Fig. 1, one end of said condensing means 10 is connected to an air inlet 11, the cold air around the device is sucked into the device under the effects of a blower 15 via the air inlet 11; and the other end of said condensing means 10 is directly or indirectly in communication with the air exhaust structure 12. The cold air enters into the condensing means via the air inlet 11 to condense the drying air which is circulating in the drying air circuit, and then it is discharged out of the device 1. In order to precisely control the degree of drying of the clothes, the condensing means 10 is preferably independent of the drying air circuit, that is so say, the cold air for condensing will not flow into the circuit where the drying air is circulating to mix with the drying air. Of course, the condensing means 10 can be designed to mix said cold air for condensing, so as to improve the heat exchange efficiency to a certain extent.
  • Now referring to Fig. 3, as shown in the figure, the air exhaust structure 12 comprises a plurality of openings 13 for introducing the air discharged from the condensing means 10 into the external space of the device 1. Said plurality of openings 13 are provided substantially upright on the top right of the backboard 7. In order to ensure the strength of the backboard 7 and at the same time to simplify the overall structure of the backboard 7, said plurality of openings 13 are integrally formed with the backboard 7. Preferably, the surface 14 on which the plurality of openings 13 are located is a convex slope, so as to make the air flow relatively smooth; and more preferably, the plurality of openings 13 are shaped as successive steps along the surface 14 with respect to the air flow direction, wherein the cross section of each of the openings 13 is substantially perpendicular to the air flow direction, so as to make the air flow more smoothly, and at the same time to reduce the resistance by the opening 13 itself to the air flow as much as possible. By speeding up the air flow, the condensing effects of the condensing means 10, or the heat exchange between the cold air and the drying air is significantly improved, so that the drying efficiency of the clothes drying device according to the present invention is greatly improved.
  • Of course, the embodiments exemplified above are merely preferred embodiments of the present invention, the present invention can have many other embodiments, and the equivalent variants of the present invention under the teaching of the present invention made by those skilled in the art are covered in the scope claimed in the claims of the present invention.

Claims (8)

  1. A household clothes drying device (1), with its rear side closed by a backboard (7), comprising:
    a drying air circuit wherein the drying air circulates to remove the moisture contained in the clothes;
    condensing means (10), which condensing means condenses with cold air the moisture carried by the drying air; and
    an air exhaust structure (12), which air exhaust structure is provided on the backboard (7) for introducing the air discharged from the condensing means to the outside of the device; characterized in that:
    said air exhaust structure (12) comprises a plurality of substantially upright openings (13).
  2. The household clothes drying device (1) according to claim 1, characterized in that the drying air circuit is a closed circulation circuit.
  3. The household clothes drying device (1) according to claim 1, characterized in that the air exhaust structure (12) is integral with the backboard (7).
  4. The household clothes drying device (1) according to claim 1, characterized in that the air exhaust structure (12) is provided on the top right part of the backboard (7).
  5. The household clothes drying device (1) according to claim 1, characterized in that said plurality of openings (13) are provided on a slope (14) of the backboard (7).
  6. The household clothes drying device (1) according to claim 5, characterized in that said plurality of openings (13) are shaped as continuous steps along said slope (14) with respect to the air flow direction.
  7. The household clothes drying device (1) according to one of the preceding claims, characterized in that the cross section of each of said openings (13) is substantially perpendicular to the flow direction of the air discharged from said air exhaust structure (12).
  8. The household clothes drying device (1) according to one of the preceding claims, characterized in that the household clothes drying device is a clothes drying machine or a clothes washing drying machine.
EP09170964.2A 2008-09-26 2009-09-22 Household clothes drying device Withdrawn EP2169106A3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2008101567926A CN101684606B (en) 2008-09-26 2008-09-26 Household clothes drying device

Publications (2)

Publication Number Publication Date
EP2169106A2 true EP2169106A2 (en) 2010-03-31
EP2169106A3 EP2169106A3 (en) 2015-10-21

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EP09170964.2A Withdrawn EP2169106A3 (en) 2008-09-26 2009-09-22 Household clothes drying device

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EP (1) EP2169106A3 (en)
CN (1) CN101684606B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2511415A1 (en) * 2011-04-15 2012-10-17 Candy S.p.A. Condenser for laundry drying machine
EP3091116A1 (en) * 2015-05-07 2016-11-09 Miele & Cie. KG Laundry treatment machine, air guidance group for a laundry treatment machine and cover for an air guidance group for a laundry treatment machine

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1610090A1 (en) 1966-10-20 1971-04-01 Siemens Elektrogeraete Gmbh Laundry treatment machine that works according to the drum principle and is set up for drying
EP1925714A1 (en) 2006-11-24 2008-05-28 CANDY S.p.A. Apparatus and method for controlling the conditioning of the flow of drying air in a laundry drying machine

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3811198A (en) * 1971-05-21 1974-05-21 H Baltes Method and drying closet for drying laundry and the like
IT209164Z2 (en) * 1985-08-02 1988-09-16 Zanussi Elettrodomestici CONDENSATION DRYER.
FR2605337B1 (en) * 1986-10-20 1989-05-26 Ciapem DRYING ROTARY DRUM APPARATUS BY AIR CIRCULATION.
US5305484A (en) * 1988-01-13 1994-04-26 J.S.F. Holdings (Cork) Limited Clothes steaming and drying cabinet
DE4032743A1 (en) * 1990-10-16 1992-04-23 Zanker Gmbh Laundry dryer friendly to environment - has condenser supplied with steam-laden air and cooling air which is distributed before discharge back into environment
DE19704213C1 (en) * 1997-02-05 1998-09-17 Miele & Cie System for detecting unacceptable conditions in clothes or laundry dryer
CN1888283B (en) * 2005-06-29 2011-09-14 海尔集团公司 Condensing drying method and condensing laundry dryer
ATE464426T1 (en) * 2005-11-23 2010-04-15 Electrolux Home Prod Corp CLOTHING DRUM DRYER AND METHOD FOR CONTROLLING THE SAME
EP1925713B1 (en) * 2006-11-24 2010-01-06 CANDY S.p.A. Laundry drier with an additional controlled-temperature compartment for delicate laundry

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1610090A1 (en) 1966-10-20 1971-04-01 Siemens Elektrogeraete Gmbh Laundry treatment machine that works according to the drum principle and is set up for drying
EP1925714A1 (en) 2006-11-24 2008-05-28 CANDY S.p.A. Apparatus and method for controlling the conditioning of the flow of drying air in a laundry drying machine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2511415A1 (en) * 2011-04-15 2012-10-17 Candy S.p.A. Condenser for laundry drying machine
EP3091116A1 (en) * 2015-05-07 2016-11-09 Miele & Cie. KG Laundry treatment machine, air guidance group for a laundry treatment machine and cover for an air guidance group for a laundry treatment machine

Also Published As

Publication number Publication date
EP2169106A3 (en) 2015-10-21
CN101684606A (en) 2010-03-31
CN101684606B (en) 2011-11-09

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