EP3660194A1 - Heat exchange apparatus and laundry drying appliance having heat exchange apparatus - Google Patents
Heat exchange apparatus and laundry drying appliance having heat exchange apparatus Download PDFInfo
- Publication number
- EP3660194A1 EP3660194A1 EP19208789.8A EP19208789A EP3660194A1 EP 3660194 A1 EP3660194 A1 EP 3660194A1 EP 19208789 A EP19208789 A EP 19208789A EP 3660194 A1 EP3660194 A1 EP 3660194A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- heat exchange
- pipe
- tub
- exchange apparatus
- rear wall
- 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.)
- Pending
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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
- D06F25/00—Washing machines with receptacles, e.g. perforated, having a rotary movement, e.g. oscillatory movement, the receptacle serving both for washing and for centrifugally separating water from the laundry and having further drying means, e.g. using hot air
-
- 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
- D06F58/20—General details of domestic laundry dryers
- D06F58/24—Condensing arrangements
-
- 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
- D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
- D06F37/26—Casings; Tubs
- D06F37/267—Tubs specially adapted for mounting thereto components or devices not provided for in preceding subgroups
-
- 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 heat exchange apparatus 100 includes a tiled pipe 160 in which a fluid passage 110 is formed.
- the pipe 160 is fixed using a connecting bracket 170.
- An inlet 161 of the pipe 160 passes through a rear wall 22 of a tub.
- An outlet 162 of the pipe 160 is located inside the tub 2, and is close to a guiding apparatus 17 provided on the rear wall 22 of the tub.
- the guiding apparatus 17 extends toward a bottom of the tub 2.
- the guiding apparatus 17 may be a protruding rib.
- the pipe 160 is made of metal or a material whose thermal conductivity is not inferior to that of metal.
- the pipe 160 is spread into an annular structure, and has a rounded through hole 150.
- an acute angle may be implemented between each two adjacent bent sections of the pipe.
- the flat body is vertically or obliquely mounted relative to a horizontal plane in a manner in which the tub and a drum are disposed, and the inlet of the fluid passage is higher than other portions of the fluid passage.
- at least partial sections of the pipe are inclined downward relative to the horizontal plane along a direction in which a fluid flows.
- the cooling medium is tap water. The cooling water can generate relatively large potential energy in an inclined bent area, and a relatively large turbulent flow in generated in a bent section. Therefore, precipitation and accumulation of sediments in water in the bending section are reduced, so that a water flow in the fluid passage is smoother, thereby avoiding blockage of the fluid passage.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Detail Structures Of Washing Machines And Dryers (AREA)
Abstract
Description
- The present invention belongs to the technical field of household appliances, and relates to a laundry drying appliance and a heat exchange apparatus thereof.
- Chinese Patent Application Publication No.
CN105463804A discloses a laundry dryer having a laundry processing barrel assembly located inside a cabinet, the barrel assembly including a drum that may be driven by a motor to rotate and a tub sleeved outside the drum. The tub is connected to a condensing passage and space of the tub is in communication with space of the condensing passage. The condensing passage is then connected to a fan and an air heating passage successively. The other end of the air heating passage is then in communication with the space of the tub. Therefore, an air circulation path is formed among the tub, the condensing passage, the fan, and the air heating passage. In a drying procedure, a heater in the air heating passage heats drying air flowing through the air heating passage. Heated high-temperature drying air enters the laundry processing barrel assembly under action of the fan, to heat wet laundry in the drum, thereby evaporating moisture in the laundry. The drying air carrying the evaporated moisture then enters the condensing passage, in which the moisture in the drying air is condensed to become liquid again and be separated from the drying air. The drying air then becomes cooled and dried again, and enters the heating passage again under driving of the fan, to start a new cycle of circulation, and so on, so that the laundry in the drum are eventually dried. A cooling water inlet pipe is connected to the condensing passage. In the drying procedure, cooling water flows into the condensing passage from the inlet pipe, so that heat is exchanged with the drying air entering the condensing passage, thereby condensing the moisture in the drying air. -
U.S. Patent No. US6279357B1 discloses a washer-dryer. The washer-dryer has a roller that is mounted in a tub using a tripod. A rear wall of the tub has a groove. Water flows to the rear wall of the tub from a water inlet apparatus. In a drying mode, the roller rotates, and wet air leaves the roller and is stirred under rotation of the roller. Flowing water contacts the wet air, so that an effect of condensing the air is improved before the air is heated and returns to the roller along a circulation passage. - The present invention is intended to provide a heat exchange apparatus applicable to a laundry drying appliance, so that the laundry drying appliance has a compact structure and good heat exchange efficiency.
- According to an aspect of the present invention, a heat exchange apparatus of a laundry drying appliance includes a tiled pipe in which a fluid passage is formed, the pipe having an inlet and an outlet, thereby forming a fluid passage for flowing of a cooling medium in the pipe, where the pipe is made of metal or a material whose thermal conductivity is not inferior to metal. A periphery of the pipe can contact process air, so a heat exchange area is large, and heat exchange efficiency is relatively high.
- There may be a gap between walls of the pipe to facilitate air circulation. Therefore, process air on both sides of the heat exchange apparatus can also flow to each other, so that heat exchange is more sufficient.
- According to another embodiment of the present invention, the pipe includes several sections formed through bending or folding, each section being fixed using a connecting bracket
- According to an embodiment of the present invention, the pipe is spread into an annular structure.
- According to an embodiment of the present invention, the pipe is folded and bent and an acute angle is formed between each two adjacent bent sections.
- According to an embodiment of the present invention, the pipe is folded and bent, and mutually bent sections are parallel to each other.
- According to an embodiment of the present invention, the pipe is folded and bent, and has several mutually bent sections, and after the heat exchange apparatus being vertically or obliquely mounted relative to a horizontal plane, at least partial sections of the pipe are inclined downward relative to the horizontal plane along a direction in which the cooling medium flows.
- The present invention is further intended to provide a laundry drying appliance.
- According to an embodiment of the present invention, a laundry drying appliance is provided, including a drum horizontally or obliquely disposed, the drum being rotatably located in a tub, and a wall of the drum having several densely-distributed holes to allow circulation of process air used in drying flows between the drum and the tub, a rear wall of the drum being connected to a drive shaft that drives the drum to rotate, and the drive shaft passing through a bearing located on a rear wall of the tub, the tub being connected to a process air passage, and the process air passage being provided with a fan therein, where an air inlet of the process air passage is located on the rear wall of the tub or near the rear wall of the tub, the heat exchange apparatus according to any of the foregoing embodiments being mounted between the rear wall of the tub and the rear wall of the drum.
- According to an embodiment of the present invention, the heat exchange apparatus is fixed to the rear wall of the tub.
- There is a mounting spacing between the pipe and the rear wall of the tub.
- Specific implementations of the present invention are described using examples below with reference to the accompanying drawings.
-
FIG. 1 is a simple schematic diagram of a laundry drying appliance; -
FIG. 2 is a front view of a heat exchange apparatus and a rear part of a tub according to a first implementation; and -
FIG. 3 is a front view of a heat exchange apparatus according to a second implementation. - As shown in
FIG. 1 , a laundry drying appliance 1 includes atub 2 and adrum 4 that is located in thetub 2 and that may be driven by amotor 3 to rotate, the tub and the drum constituting a main drying chamber. Awall 41 of thedrum 4 hasdense holes 42, so that air circulation is suitable between an interior of thedrum 4 and thetub 2. Arear wall 43 of the drum is connected to adrive shaft 44 that drives the drum to rotate. Thedrive shaft 44 is connected to themotor 3 in a driving manner after passing through abearing 23 located on therear wall 22 of the tub. Thedrum 4 is horizontally disposed. In other implementations, the drum may also be obliquely disposed in an oblique tub. A central axis of thedrum 4 being horizontal or oblique is used as a reference for terms "horizontally" and "obliquely". - The
tub 2 is connected to aprocess air passage 5. Anair inlet 51 of theprocess air passage 5 is connected to aside wall 21 of thetub 2, and is close to therear wall 22 of thetub 2. Anair outlet 52 of theprocess air passage 5 is connected to awasher 6 mounted on a front side of thetub 2. Space of theprocess air passage 5 and space of thetub 2 are in communication. In other implementations, the inlet of theprocess air passage 5 may also be connected to therear wall 22 of thetub 2. - A
fan 7 and aheating apparatus 8 are provided inside theprocess air passage 5. After thefan 7 is started, air can be driven to enter theprocess air passage 5 from theair inlet 51 of theprocess air passage 5, and passes through theheating apparatus 8, and is blown out through theair outlet 52 to enter a front portion of thetub 2, so as to enter thedrum 4 to fully contact laundry and then passes through thehole 42 on thewall 41 of the drum. Relatively much airflow passes through thehole 42 and then enter agap 9 that is between therear wall 22 of the tub and therear wall 43 of the drum and whose pressure is relatively low, and then aim at theair inlet 51 of theprocess air passage 5 along thegap 9, and finally enter theprocess air passages 5, thereby completing a cyclic flow. - It can be learned that, during flowing of the process air to the
air inlet 51 of theprocess air passage 5, relatively dense process air passes through thegap 9 between therear wall 22 of the tub and therear wall 43 of the drum. Aheat exchange apparatus 10 is disposed in thegap 9 between therear wall 22 of the tub and therear wall 43 of the drum. Therefore, when wet hot process air passes through thegap 9, heat is exchanged with theheat exchange apparatus 10, so that temperature decreases, and moisture in the wet hot process air is condensed. The process air subsequently enters theprocess air passage 5 from theair inlet 51 under action of thefan 7. Subsequently, due to heating of theheating apparatus 8, the temperature of the process air rises again, and then the process air enters thetub 2 and thedrum 4 again to contact with laundry therein, thereby evaporating moisture in the laundry. - The
heat exchange apparatus 10 is mounted in the gap between therear wall 22 of the tub and therear wall 43 of the drum, through which relatively dense process air passes, so that theheat exchange apparatus 10 exerts higher heat exchange efficiency. In addition, since a dedicated heat exchange passage is not required, more space is saved, thereby reducing a volume and manufacturing costs of the laundry drying appliance 1. - The
heat exchange apparatus 10 has a flat structure and is fixed to thetub 2, for example, may be fixed to therear wall 22 of the tub. Theheat exchange apparatus 10 includes afluid passage 11 defined by a material having relatively good thermal conductivity, and thefluid passage 11 having apassage inlet 12 that passes through awall 20, for example, therear wall 22 of thetub 2. Apassage outlet 13 is located inside thetub 2. In a working process, a cooling medium is supplied to thefluid passage 11 through thepassage inlet 12. Heat is exchanged between the cooling medium and the process air contacting theheat exchange apparatus 10 using a thermally conductive passage wall, to reduce the temperature of the process air. The cooling medium with an increased temperature is discharged from a bottom of thetub 2. The cooling medium may be water. Thefluid passage 11 can continuously provide a cooling medium to theheat exchange apparatus 10. In addition, the cooling medium flows in thefluid passage 11, and heat can be sufficiently exchanged with the process air through the passage wall, so that the cooling medium is fully utilized. In addition, since the cooling medium flows in thefluid passage 11, no splash enters thedrum 4 under blowing of the airflow, and therefore laundry in thedrum 4 is prevented from being wet, and the cooling medium is not inhaled into theprocess air passage 5 by thefan 7. In addition, theheat exchange apparatus 10 with the flat structure in which thefluid passage 11 is arranged may be designed to have a relatively thin thickness as required, so that a requirement on a width of thegap 9 between therear wall 22 and therear wall 43 of the drum is relatively low, thereby more helping air pass through the gap.
In an embodiment shown inFIG. 2 , aheat exchange apparatus 100 includes atiled pipe 160 in which afluid passage 110 is formed. Thepipe 160 is fixed using a connectingbracket 170. Aninlet 161 of thepipe 160 passes through arear wall 22 of a tub. Anoutlet 162 of thepipe 160 is located inside thetub 2, and is close to a guidingapparatus 17 provided on therear wall 22 of the tub. The guidingapparatus 17 extends toward a bottom of thetub 2. The guidingapparatus 17 may be a protruding rib. Thepipe 160 is made of metal or a material whose thermal conductivity is not inferior to that of metal. Thepipe 160 is spread into an annular structure, and has a rounded throughhole 150. Theheat exchange apparatus 100 is fixed to therear wall 22 of thetub 2 in various feasible manners, for example, welding, gluing, screwing, or injection molding. An annular flat structure formed by thepipe 160 through coiling is coaxial with the bearing 23 on therear wall 22 of thetub 2, and therefore is also disposed substantially coaxially with thedrum 4. - The
drive shaft 44 passes through the throughhole 150 of theheat exchange apparatus 10. Theheat exchange apparatus 10 is disposed in such way that a size of therear wall 22 of the tub can be fully utilized to spread the heat exchange apparatus, so that a heat exchange area is maximized, thereby improving heat exchange efficiency. In addition, in this manner, mounting of thetub 2 and thedrum 4 and a drive system are not affected. - More advantageously, more wet hot process air approaches the
rear wall 22 of the tub along edges of thetub 2 and thedrum 4. Therefore, through the design of the throughhole 150, thefluid passage 110 can be more collectively distributed in an area with more dense process air. - There is a
gap 164 betweenwalls 163 of thepipe 160 for facilitating air circulation. Therefore, the process air can flow in thepipe 160 to more fully contact thewall 163 of the pipe, thereby better improving heat exchange efficiency. - With reference to
FIG. 1 , there is a mountingspacing 18 between thepipe 160 and therear wall 22 of the tub. - In an embodiment shown in
FIG. 3 , aheat exchange apparatus 200 includes atiled pipe 260 in which a fluid passage 210 is formed. Thepipe 260 is folded and bent, and mutuallybent sections 2600 are parallel to each other. - In other embodiments not shown in the accompanying drawings, an acute angle may be implemented between each two adjacent bent sections of the pipe. After the heat exchange apparatus is mounted on a rear wall of a tub, the flat body is vertically or obliquely mounted relative to a horizontal plane in a manner in which the tub and a drum are disposed, and the inlet of the fluid passage is higher than other portions of the fluid passage. In this case, at least partial sections of the pipe are inclined downward relative to the horizontal plane along a direction in which a fluid flows. Generally, the cooling medium is tap water. The cooling water can generate relatively large potential energy in an inclined bent area, and a relatively large turbulent flow in generated in a bent section. Therefore, precipitation and accumulation of sediments in water in the bending section are reduced, so that a water flow in the fluid passage is smoother, thereby avoiding blockage of the fluid passage.
- The specific implementations described above and shown in the accompanying drawings are merely for describing the present invention. Any form of change made by persons of ordinary skill in the art to the present invention within the scope of the basic technical ideas of the present invention falls within the protection scope of the present invention.
Claims (10)
- A heat exchange apparatus of a laundry drying appliance, characterized by comprising a tiled pipe (160, 260) in which a fluid passage is formed, the pipe having an inlet (161) and an outlet (162), thereby forming a fluid passage (11, 110) for flowing of a cooling medium in the pipe, wherein the pipe is made of metal or a material whose thermal conductivity is not inferior to metal.
- The heat exchange apparatus according to claim 1, characterized in that there is a gap (164) between walls (163) of the pipe for facilitating air circulation.
- The heat exchange apparatus according to claim 2, characterized in that the pipe (160) comprises several sections formed through bending or folding, each section being fixed using a connecting bracket (170).
- The heat exchange apparatus according to claim 1, characterized in that the pipe is spread into an annular structure.
- The heat exchange apparatus according to claim 1, characterized in that the pipe is folded and bent, and an acute angle is formed between each two adjacent bent sections.
- The heat exchange apparatus according to claim 1, characterized in that the pipe is folded and bent, and mutually bent sections (2600) are parallel to each other.
- The heat exchange apparatus according to claim 1, characterized in that the pipe is folded and bent, and has several mutually bent sections, and after the heat exchange apparatus being vertically or obliquely mounted relative to a horizontal plane, at least partial sections of the pipe are inclined downward relative to the horizontal plane along a direction in which the cooling medium flows.
- A laundry drying appliance, comprising a drum (4) horizontally or obliquely disposed, the drum being rotatably located in a tub (2), and a wall (41) of the drum having several densely-distributed holes (42) to allow circulation of process air used in drying flows between the drum and the tub, a rear wall of the drum being connected to a drive shaft (44) that drives the drum to rotate, and the drive shaft passing through a bearing (23) located on a rear wall (22) of the tub, characterized in that the tub is connected to a process air passage (5), the process air passage being provided with a fan (7) therein, wherein an air inlet (51) of the process air passage is located on the rear wall of the tub or near the rear wall of the tub, the heat exchange apparatus (10, 100, 200) according to any of the foregoing claims being mounted between the rear wall (22) of the tub and the rear wall (43) of the drum.
- The laundry drying appliance according to claim 8, characterized in that the heat exchange apparatus is fixed to the rear wall of the tub.
- The laundry drying appliance according to claim 9, characterized in that there is a mounting spacing (18) between the pipe (160) and the rear wall (22) of the tub.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201811451043.6A CN111254671B (en) | 2018-11-30 | 2018-11-30 | Heat exchange device and clothes drying appliance with same |
Publications (1)
Publication Number | Publication Date |
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EP3660194A1 true EP3660194A1 (en) | 2020-06-03 |
Family
ID=68581365
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19208789.8A Pending EP3660194A1 (en) | 2018-11-30 | 2019-11-13 | Heat exchange apparatus and laundry drying appliance having heat exchange apparatus |
Country Status (2)
Country | Link |
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EP (1) | EP3660194A1 (en) |
CN (1) | CN111254671B (en) |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3922798A (en) * | 1974-08-19 | 1975-12-02 | Gen Electric | Clothes dryer |
US6279357B1 (en) | 1998-06-18 | 2001-08-28 | General Domestic Appliances Limited | Washer dryer |
CN105200748A (en) * | 2015-09-01 | 2015-12-30 | 无锡小天鹅股份有限公司 | Clothes dryer |
CN105463804A (en) | 2014-07-15 | 2016-04-06 | 博西华电器(江苏)有限公司 | Clothes dryer |
US20180094376A1 (en) * | 2016-10-05 | 2018-04-05 | Samsung Electronics Co., Ltd. | Washing and drying machine |
EP3330432A1 (en) * | 2016-11-30 | 2018-06-06 | BSH Hausgeräte GmbH | Laundry drying machine |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101113560A (en) * | 2006-07-28 | 2008-01-30 | 南京乐金熊猫电器有限公司 | Clothes drier |
CN201390910Y (en) * | 2009-01-05 | 2010-01-27 | 上海凯奥机器有限公司 | Device for recycling exhaustion heat of industrial dryer |
CN103015140A (en) * | 2012-12-21 | 2013-04-03 | 无锡小天鹅股份有限公司 | Clothes dryer |
CN203247439U (en) * | 2013-04-22 | 2013-10-23 | 无锡小天鹅股份有限公司 | Condensing system effectively improving drying efficiency of full-automatic washing and drying all-in-one machine |
CN105658866B (en) * | 2013-11-13 | 2018-06-26 | 伊莱克斯家用电器股份公司 | Heat pump laundry dryer |
CN104711833B (en) * | 2013-12-13 | 2018-04-06 | 博西华电器(江苏)有限公司 | Dryer |
KR102366933B1 (en) * | 2015-07-30 | 2022-02-23 | 엘지전자 주식회사 | Device for treating laundry |
EP3192912A1 (en) * | 2016-01-14 | 2017-07-19 | BSH Hausgeräte GmbH | Washer-dryer with a cooling water circuit |
CN106968090B (en) * | 2016-01-14 | 2020-12-01 | 博西华电器(江苏)有限公司 | Clothes dryer |
-
2018
- 2018-11-30 CN CN201811451043.6A patent/CN111254671B/en active Active
-
2019
- 2019-11-13 EP EP19208789.8A patent/EP3660194A1/en active Pending
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3922798A (en) * | 1974-08-19 | 1975-12-02 | Gen Electric | Clothes dryer |
US6279357B1 (en) | 1998-06-18 | 2001-08-28 | General Domestic Appliances Limited | Washer dryer |
CN105463804A (en) | 2014-07-15 | 2016-04-06 | 博西华电器(江苏)有限公司 | Clothes dryer |
CN105200748A (en) * | 2015-09-01 | 2015-12-30 | 无锡小天鹅股份有限公司 | Clothes dryer |
US20180094376A1 (en) * | 2016-10-05 | 2018-04-05 | Samsung Electronics Co., Ltd. | Washing and drying machine |
EP3330432A1 (en) * | 2016-11-30 | 2018-06-06 | BSH Hausgeräte GmbH | Laundry drying machine |
Also Published As
Publication number | Publication date |
---|---|
CN111254671B (en) | 2023-10-27 |
CN111254671A (en) | 2020-06-09 |
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