EP2327828A1 - Kleidertrockner mit Heizelement und entsprechendes Heizelement - Google Patents

Kleidertrockner mit Heizelement und entsprechendes Heizelement Download PDF

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Publication number
EP2327828A1
EP2327828A1 EP10190946A EP10190946A EP2327828A1 EP 2327828 A1 EP2327828 A1 EP 2327828A1 EP 10190946 A EP10190946 A EP 10190946A EP 10190946 A EP10190946 A EP 10190946A EP 2327828 A1 EP2327828 A1 EP 2327828A1
Authority
EP
European Patent Office
Prior art keywords
heater
baffle
drying machine
air
drum
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.)
Granted
Application number
EP10190946A
Other languages
English (en)
French (fr)
Other versions
EP2327828B1 (de
Inventor
Jihao Li
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 EP2327828A1 publication Critical patent/EP2327828A1/de
Application granted granted Critical
Publication of EP2327828B1 publication Critical patent/EP2327828B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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 
    • D06F58/26—Heating arrangements, e.g. gas heating equipment

Definitions

  • the present invention relates to a clothes drying machine having a heater, and a heater related to such clothes drying machine.
  • a drying process is usually as follows.
  • dry air is heated by a heater in an air duct into dry hot air, enters a clothes processing drum to exchange heat with wet clothes, take moisture away from the clothes, become wet hot air, and pass through an outlet disposed at the drum to enter a condenser in the air duct.
  • condensation moisture in the wet hot air is condensed into water and discharged through a drainage device.
  • the air becomes dry cold air, is guided to the heater again by a blower, becomes dry hot air after heating, and enters another cycle as detailed. The cycle repeats until the drying is completed.
  • an air flow flowing through the air duct is laminar, so that after being heated by the heater temperature of the air flow in different layers is not the same.
  • the temperature of the air flow layer near the heating substructures of the heater is higher, and the temperature of the air flow layer away from these substructures (such as near side walls of the air duct) is lower. Therefore, heat exchange efficiency of hot air entering the clothes processing drum may be low.
  • the air flows of different layers are pre-mixed before entering the clothes processing drum, so that overall temperature distribution of the hot air is uniform.
  • a baffle plate is disposed on a side wall of an air duct to disturb the air flow layers passing by to produce a turbulent flow, so as to mix the air.
  • the mixture of the air flow layers near the side wall dose not greatly improve overall heat exchange performance of the hot air.
  • the size of the air duct is large, the air flow layers in a central area of the air duct or the air flow layers near an opposite side wall can not be mixed completely. Accordingly, it is necessary to improve the existing clothes drying machine to solve the above problems.
  • a clothes drying machine and a heater related to such machine which are provided for heating an air flow and disturbing the air flow to produce a turbulent flow, in accordance with the respective independent claim.
  • Preferred embodiments of the invention are subjects of dependent claims and the subsequent description.
  • Preferred embodiments of the inventive machine correspond to preferred embodiments of the inventive heater, even if not specified explicitly herein.
  • the present invention provides a clothes drying machine, which includes a cabinet; a drum, mounted in the cabinet for containing clothes to be dried; an air duct, in communication with the drum to define an air path through which an air flow passes and into the drum for drying the clothes; and a heater, disposed in the air duct for heating the air flow about to flow into the drum, and disposed with a baffle to disturb the air flow passing by to produce a turbulent flow.
  • the baffle is formed by deforming a body of the heater.
  • the heater has an upstream end and a downstream end, and the baffle is positioned at the downstream end of the heater.
  • the heater includes a first heating tube winding and defining a first plane, and the baffle is formed by means of bending a distal end thereof at an angle with respect to the first plane.
  • the heater further includes a second heating tube winding and defining a second plane substantially parallel to the first plane, and the baffle is bent toward the second plane.
  • the air duct includes a plurality of side walls connected to each other to enclose the heater, and at least one side wall of the plurality of side walls is disposed with a projection disturbing the air flow passing by to produce a turbulent flow.
  • the clothes drying machine further includes a condensation device for condensing the air flow flowing from the drum.
  • the clothes drying machine further includes a blower, disposed in the air duct for enabling air to circulate along the air path, and the heater is positioned in the downstream of the blower.
  • the clothes drying machine is a dryer or a washer-dryer.
  • the first heating tube includes a plurality of segments extending in a direction substantially parallel to the air path.
  • the present invention also provides a heater, applied to a clothes drying machine.
  • the heater is disposed with a baffle for disturbing the air flow passing by to produce a turbulent flow.
  • the baffle is formed by deforming a body of the heater.
  • the heater has an upstream end and a downstream end, and the baffle is positioned at the downstream end.
  • the heater includes a first heating tube winding and defining a first plane, and the baffle is formed by means of bending a distal end thereof at an angle with respect to the first plane.
  • the heater further includes a second heating tube winding and defining a second plane substantially parallel to the first plane, and the baffle is bent toward the second plane.
  • beneficial effects of the present invention include the following.
  • the heater is disposed with the baffle, so the air flow layers of high temperature near the heater are mixed first, and are then further mixed with the air flow layers near side walls of the air duct, so that overall heat exchange performance of the hot air in the air duct is ensured to be high.
  • a projection is further disposed on the side walls of the air duct to enhance the mixture of the air flow layers near the projection and the air layers near the heater, so as to further enhance the heat exchange performance of the hot air about to enter the drum.
  • a clothes drying machine 100 shown in FIG. 1 is a washer-dryer 100 having functions of washing and drying.
  • the clothes drying machine 100 may also be a dryer only having a drying function or other machines. Therefore, the implementation of the present invention is described below by taking a washer-dryer 100 as an example, but the present invention is not limited thereto.
  • a washer-dryer 100 includes a cabinet 10, a tub 20 disposed in the cabinet, a drum 30 rotatably disposed in the tub 20, a motor 40 for driving the drum 30 to rotate, a drainage system 50, 51 in communication with the tub 20, and an air duct 60 in communication with the drum.
  • a front part of the cabinet 10 is disposed with a door 11 capable of being opened and closed in a pivotable manner for inputting clothes to be washed or to be dried into the drum 30.
  • the tub 20 is supported by a damping device (not shown) in the cabinet 10.
  • the drum 30 is substantially cylindrical, and a wall thereof is disposed with a plurality of through holes (not shown) for discharging water or air.
  • an inner wall of the drum 30 is further disposed with a plurality of lifting ribs (not shown) distributed along the circumference, so that the clothes are lifted to a higher place and then dropped to the bottom inside the drum when the drum rotates.
  • a rotation shaft (not marked) extends from a rear wall of the drum 30, and a strap 41 connects the rotation shaft to a motor shaft (not marked) of the motor 40, so that the motor 40 can drive the drum 30 to rotate.
  • the drainage system 50, 51 includes a drainage pump 50 and a drainage tube 51, so that washing water can be discharged from the cabinet 10 by the operation of the drainage pump 50.
  • the air duct 60 is in double communication with the drum 30 to form an air path substantially closed in itself.
  • a blower 80 is disposed in the air duct 60, and can produce a blowing force and a suction force, so as to drive the air flow to flow along the air path, as indicated by arrows.
  • the air duct 60 includes a condensation section 61 and a heating section 62.
  • a heater 70 is disposed in the heating section 62 to heat the air flow passing through the heating section 62 and about to enter the drum 30.
  • an air condenser 90 is disposed in the condensation section 61, which air condenser 90 includes a plurality of first ducts (not marked and perpendicular to the drawing) and second ducts (not marked and parallel to the air path) intersecting but not in communication with each other.
  • the first ducts allow external air to pass through
  • the second ducts allow wet air discharged from the drum 30 to pass through.
  • the condensation device may also be a spraying device disposed in a condensation area or a liquid condensation device capable of performing heat exchange with the condensation area.
  • the heater 70 is substantially positioned in a central area of the heating section 62, and is located in the downstream of a blower 82.
  • the heater 70 includes a first heating tube 71 and a second heating tube 72, which are distributed one above the other and parallel to each other.
  • the first heating tube 71 is under the second heating tube 72, and is formed by a plurality of winding segments and substantially parallel to the air path, and the plurality of segments defines a fist plane.
  • the second heating tube 72 also includes a plurality of winding segments and substantially parallel to the air path, and the plurality of segments defines a second plane substantially parallel to the first plane.
  • the second heating tube 72 is shorter than the first heating tube 71.
  • the heating tubes 71 and 72 include high-impedance conductors, and negative and positive terminals of the conductors are connected to a 220 V or 110 V alternating current power supply through wires, so that the conductors can transform electricity into heat energy to heat the air passing along.
  • a downstream end of the first heating tube 71 is bent at an angle with respect to the first plane toward the second plane to form a baffle 711.
  • the baffle 711 is positioned at an arcuate transition end at a distal end of the first heating tube 71, and the number of the baffles 711 is 3, which are disposed horizontally.
  • the baffle 711 is for changing directions of air flow layers (including air flow layers shown in FIG. 2 distributed horizontally and air flow layers shown in FIG. 3 distributed vertically) passing by to produce a turbulent flow, so that air flows in different layers are mixed to improve the overall heat exchange performance of hot air.
  • the baffle 711 is bent upward. It should be understood that if the first heating tube 71 is disposed in a higher place in the air duct, it is better for the baffle 711 to be bent downward.
  • the baffle 711 may also be bent in a horizontal direction to enhance mixture of the air flow layers in the horizontal direction.
  • the bending angle may be determined by a vertical size or a horizontal size of the air duct 60. If the vertical or horizontal size is large, the bending angle may better be large, so that more air flows are mixed.
  • the same baffle 711 may also be formed at a distal end of the second heating tube 72, or a third heating tube or a fourth heating tube with the same baffle 711 may be added above the second heating tube 72 or below the first heating tube 71. Since the heater 70 is usually disposed in a central area of the heating section, the baffle 711 disposed on the body of the heater 70 can enable the air flow layers of high temperature near the heater 70 be mixed first, and then further be mixed with the air flow layers near side walls 621 and 622 of the air duct 60, so that overall heat exchange performance of the hot air in the air duct 60 is ensured to be high.
  • the baffle 711 is integrally formed at the distal end of the body of the heater 70, in other embodiments, the baffle 711 may disposed on the heater 70 by assembly, such as by traditional fixing methods of welding or buckling. Additionally, the disposition location of the baffle 711 is not limited to the downstream end of the heater 70, and may be at other places on the body of the heater 70.
  • a projection 6251 projected into the air duct 60 is further disposed on an upper side wall 625 of the heating section 62.
  • the projection 6251 also has the same function of disturbing the air flow, so that the air flow layers near the upper side wall 625 can be further mixed with the air flow layers near the heater 70 completely. Thereby, further improving the heat exchange performance of the hot air about to enter the drum 30 are attained.
  • the projection 6251 may be integrally formed on the upper side wall 625, or may be installed on the side wall 625. Additionally, projections may further be disposed on other side walls, such as a lower side wall 626, to enhance mixture of the air flow layers nearby and the air flow layers near the heater.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
EP10190946.3A 2009-11-25 2010-11-12 Kleidertrockner mit Heizelement und entsprechendes Heizelement Not-in-force EP2327828B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2009102332871A CN102071564B (zh) 2009-11-25 2009-11-25 加热装置和使用该加热装置的衣物烘干设备

Publications (2)

Publication Number Publication Date
EP2327828A1 true EP2327828A1 (de) 2011-06-01
EP2327828B1 EP2327828B1 (de) 2013-05-15

Family

ID=43806926

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10190946.3A Not-in-force EP2327828B1 (de) 2009-11-25 2010-11-12 Kleidertrockner mit Heizelement und entsprechendes Heizelement

Country Status (2)

Country Link
EP (1) EP2327828B1 (de)
CN (1) CN102071564B (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2604749A1 (de) * 2011-12-16 2013-06-19 Electrolux Home Products Corporation N.V. Haushaltswasch- und Wäschetrocknermaschine

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2763532C (en) * 2011-01-18 2015-03-31 Tutco, Inc. Two level electric resistance heater and method of use
CN106813475A (zh) * 2015-12-02 2017-06-09 朱元华 一种箱式烘干机
CN108660719A (zh) * 2017-03-29 2018-10-16 青岛海尔洗衣机有限公司 一种干衣设备风道结构及干衣设备
CN110438777B (zh) * 2018-05-04 2023-07-21 青岛海尔洗涤电器有限公司 一种烘干模块加热管结构及洗干一体机或干衣机
CN110438775A (zh) * 2018-05-04 2019-11-12 青岛海尔滚筒洗衣机有限公司 用于衣物处理设备的加热装置及衣物处理设备
CN109608013B (zh) * 2018-11-14 2021-11-30 杭州职业技术学院 一种牛粪沼渣烘干设备

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3340313A1 (de) * 1983-11-08 1985-05-15 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Haushalt-waeschetrockner
US4628190A (en) * 1984-10-10 1986-12-09 Tutco, Inc. Duct heater

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100582353C (zh) * 2007-07-16 2010-01-20 南京乐金熊猫电器有限公司 洗衣机烘干冷凝方法

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3340313A1 (de) * 1983-11-08 1985-05-15 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Haushalt-waeschetrockner
US4628190A (en) * 1984-10-10 1986-12-09 Tutco, Inc. Duct heater

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2604749A1 (de) * 2011-12-16 2013-06-19 Electrolux Home Products Corporation N.V. Haushaltswasch- und Wäschetrocknermaschine
WO2013087890A1 (en) * 2011-12-16 2013-06-20 Electrolux Home Products Corporation N.V. Household laundry washing and drying machine

Also Published As

Publication number Publication date
CN102071564B (zh) 2013-11-13
CN102071564A (zh) 2011-05-25
EP2327828B1 (de) 2013-05-15

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