GB2115126A - Household laundry drier with condensate collection - Google Patents

Household laundry drier with condensate collection Download PDF

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Publication number
GB2115126A
GB2115126A GB08300828A GB8300828A GB2115126A GB 2115126 A GB2115126 A GB 2115126A GB 08300828 A GB08300828 A GB 08300828A GB 8300828 A GB8300828 A GB 8300828A GB 2115126 A GB2115126 A GB 2115126A
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GB
United Kingdom
Prior art keywords
drier
collecting container
condensate
container
pipe length
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
GB08300828A
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GB8300828D0 (en
GB2115126B (en
Inventor
Heinrich Bocker
Thomas Johannsen
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Individual
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of GB8300828D0 publication Critical patent/GB8300828D0/en
Publication of GB2115126A publication Critical patent/GB2115126A/en
Application granted granted Critical
Publication of GB2115126B publication Critical patent/GB2115126B/en
Expired legal-status Critical Current

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Classifications

    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06FLAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F58/00Domestic laundry dryers
    • D06F58/20General details of domestic laundry dryers 
    • D06F58/24Condensing arrangements

Abstract

A household laundry drier comprises a collecting container (9), which is arranged at the top of the drier and withdrawable towards an operating side of the drier, for a condensate from a catching container (42) arranged below condensing equipment (4). The condensate is pumped from the catching container (42) by a pump (46) and conveyed through a rising duct (45) to the collecting container (9), the catching container being arranged at the bottom of the drier and associated with level- signalling equipment (46). The rising duct (45) ends in an overflow elbow (93) and the free end portion (96) thereof projects into the collecting container (9) from above. The condensate pump (44) is switched on each time for such a period that the quantity of condensate pumped up in each case has room in the space of the collecting container (9) above the opening of the free end portion (94). <IMAGE>

Description

SPECIFICATION Household laundry drier with condensate collection The present invention relates to a household laundry drier and has a particular reference to a drier with condensate collection.
In DE-OS 2933513 there is disposed a laundry drier with a condensate collecting container arranged in a receiving space, to the lowest point of which is connected a drain duct which conducts condensate overflowing from the collecting container back into a catching container arranged in a lower region of the drier. The catching container is connected with level-signalling equipment which influences the drier control when a certain level is exceeded by the condensate that has flowed back.
The known drier is relatively expensive because an additional hose and a corresponding hose connection are needed at the receiving space. In that case, the receiving space together with the hose connection must be so structured that the hose connection is disposed at the lowest point of the bottom, which falls away from all sides. This makes the production of the receiving space more difficult.
In order that condensate is not spilled during withdrawal of the collecting container, the feed opening for the condensate rising duct and, in some cases, a special pouring opening must be arranged as far as possible at the handle, i.e. thus at the operating side. The overflow is expediently provided at the feed opening and is therefore also disposed very close to the operating side, so that the risk of water leakage towards the operating side during the overflow of the collecting container is never entirely eliminated.
A further problem is that laundry slub entrained by the overflowing condensate may accumulate in the return duct and gradually clog this duct. In that case, monitoring of the level in the collecting container would no longer take place and the overflowing condensate would issue forwardly. With a receiving capacity of the collecting container of about 3 litres, the quantity of condensate overflow from a laundry wash could amount to about 1 litre, which represents an appreciable inconvenience at the site of the laundry drier.
There is accordingly a need for a laundry drier which is less expensive than the known drier to the extent that simple shapes may be used for the collecting container and its receiving space and that simple production steps can be applied. Also, if possible, fewer duct parts and thereby less assembly effort would be desirable. A closed duct system would be particularly desirable, as an uncontrolled issue of liquid would then be largely precluded. In addition, the risk of spillage of condensate during the withdrawal of a collecting container should be as small as possible, yet the collecting container should be easy to handle, for example, for withdrawal of the container, extra operations such as uncoupling of a duct should preferably be avoided.
According to the present invention there is provided a household laundry drier provided with a catching container arranged in a lower portion of the drier to catch condensate from condensing equipment in the drier, a pump intermittently operable to pump condensate out of the catching container, a collecting container arranged in an upper portion of the drier to collect condensate pumped out of the catching container and being withdrawable towards an operating side of the drier, rising duct means arranged to conduct the pumped condensate from the catching container to the collecting container and comprising an overflow elbow having a free end portion projecting into the collecting container so as to leave a space in the collecting container above the open end of said end portion, and means to so control the operating period of the pump that the volume of condensate pumpable by the pump in such period does not exceed the volume of said space.
In a preferred embodiment, the drier comprises a collecting container, which is arranged at the top of the drier and is withdrawable towards the drier operating side, for condensate from a catching container arranged below condensing equipment, the condensate being pumped by a pump through a rising duct from the catching container at the bottom of the drier. The catching container is associated with level-signalling equipment. The rising duct ends in an overflow elbow, the free end portion of which projects into the collecting container from above. The condensate pump is switched on each time for such a period that the quantity of condensate pumped up in each case has room in the space of the collecting container above the opening of the free end portion of the elbow.A special return duct and a connection for this can be dispensed with, because no condensate can overflow from the filled collecting container other than by way of the duct.
After each switching-off of the pump, excess condensate conveyed into the collecting container is sucked back through the overflow elbow and the rising duct into the catching container. Uncontrolled issue of liquid thus does not occur.
Embodiments of the present invention will now be more particularly described by way of example with reference to the accompanying drawings, in which: Figure 1 is a schematic sectional side view of a first laundry drier embodying the invention; Figure 2 is a sectional view of an overflow elbow of duct means in a second laundry drier embodying the invention; Figure 3 is a sectional view of an overflow elbow of duct means in a third laundry drier embodying the invention; and Figure 4 is a sectional view of an overflow elbow of duct means in a fourth laundry drier embodying the invention.
Referring now to the drawings, there is shown in Figure 1 a laundry drier comprising a housing 1,a laundry drum 2 which is rotatably mounted therein on a horizontal axis and which is provided with a loading opening 3 at its front side, and a condenser 4 which is arranged in the lower part of the drier and which can be cooled in any desired manner, preferably by air.
The condenser 4 is connected through an air duct 5 with a blower 6, which circulates air through a heater element 7 and a rear drum inlet into the laundry drum 2. There, the air entrains moisture contained in the laundry and passes through the front outlet and loading opening 3 and the air channel 8 back to the condenser 4. Arranged in several layers in the condenser 4 are cooling plates 41, which enclose flat spaces which are connected with duct parts (not shown) for a cooling medium, for example air. The exhaust air to be dehumidified flows through the condenser in several layers in the direction of the arrows illustrated in Figure 1.In known manner, the moisture contained in the air precipitates at the cooling plates, from where it drips into a catching container 42 below the condenser 4 and is conveyed from there through an outlet 43, a pump 44 and a rising duct 45 into a collecting container 9.
The collecting container 9 is arranged in the upper part of the drier laterally beside the drum and has a front surface visually corresponding with an operating shutter of the drier. A handle (not shown) is disposed at the front face of the container 9. In the inserted position, the collecting container 9 at the rear end actuates an end position switch 91, which monitors the fully inserted position and, for example, switches off the drier control when the container 9 is not properly pushed in.
The duct 45 ends in a pipe portion 92 with an overflow elbow 93, the free end portion 94 of which projects into the collecting container 9 from above.
The immersion depth 95 of the end portion 94 in that case determines a space 96 in the collecting container above the opening of the end portion 94, the space being dimensioned to be of such a size that condensate, conveyed during a switching-on interval of the pump 44, can be received completely in the space. After switching off of the pump 44, excess condensate is then sucked back out of the space 96 through the overflow elbow 93 and the duct 45 into the catching container 42.
Arranged in the catching container 42 is a levelsignalling device 46, which switches off the conde nsing operation as soon as the level of the conde nsate that has flowed back has exceeded a permissi ble height in the catching container 42. By means of optical and/or acoustic signalling equipment it can then be indicated to the operator of the drier that the collecting container 9 must be emptied.
Different forms of construction, of which three possibilities are illustrated in Figures 2 to 4, are feasible for the connection of the overflow elbow 93 to the container 9.
In Figure 2, there is shown a connecting point at a collecting container 29 which can, for example, be withdrawn in horizontal direction from the laundry drier. The overflow elbow 93 comprises an approxi mately horizontally extending hard resilient pipe piece 293, around the downwardly pointing opening of which is formed a conical or part-spherical outer surface. Arranged in the collecting container 29 is a receiving cavity 291,which houses the pipe length 294 of the free end portion 94 as well as a receiving funnel 292 formed integrally with the pipe length.
The part-spherical outer surface and the funnel co-operate in such a manner that the resilient pressure of the pipe piece 293 provides a defined detent setting of the collecting container 29 within the drier. In addition, the part-spherical outer surface and the funnel form an annular seal at the connecting point between the pipe piece 293 and the pipe length 294. The funnel 292 should provide a defined leakiness towards the receiving cavity 291 so that the displaced air can escape out of the collecting container.
In another embodiment as shown in Figure 3, the overflow elbow is provided with a stub pipe 393, which is arranged to extend in the direction of movement of the collecting container 39 during withdrawal and which at its exterior has a flat conical surface at the connecting point. By means of this conical surface, the end of the pipe 393 is more readily located during insertion of the collecting container and is centred during connection with a pipe elbow portion 394. The elbow portion 394 has a corresponding internal conical surface at the connecting point. In the embodiment of Figure 3, the elbow portion 394 is integrally connected with a cover 395 for a pouring opening of the container 39.
The pouring opening is of such a size that the container 39 can be emptied substantially more rapidly through this than through the opening in the elbow portion 394. The elbow portion 394 also serves as a handle for removal of the cover 395.
In Figure 4, there is shown an overflow elbow suitable for a container 49 which can be withdrawn either upwardly (arrow A) or towards the side or front of the drier (arrow B), special means being provided for securing the proper installation position. Accordingly, the overflow elbow 493 in Figure 4 is constructed to be rising and bends away towards the side. The connecting point to the free end portion 494, arranged in the container 49, of the overflow elbow can be constructed according to Figure 2 or Figure 3.
In the case when the container 49 is withdrawable in the direction of arrow B, the free end portion 494 of the overflow elbow can consist of a soft resilient part which provides particularly good sealing at the connecting point.

Claims (14)

1. A household laundry drier provided with a catching container arranged in a lower portion of the drier to catch condensate from condensing equipment in the drier, a pump intermittently operable to pump condensate out of the catching container, a collecting container arranged in an upper portion of the drier to collect condensate pumped out of the catching container and being withdrawable towards an operating side of the drier, rising duct means arranged to conduct the pumped condensate from the catching container to the collecting container and comprising an overflow elbow having a free end portion projecting into the collecting container so as to leave a space in the collecting container above the open end of said end portion, and means to so control the operating period of the pump that the volume of condensate pumpable by the pump in such period does not exceed the volume of said space.
2. A drier as claimed in claim 1, comprising level signalling means to signal the level of condensate in the catching container.
3. A drier as claimed in either claim 1 or claim 2, wherein the elbow comprises a substantially horizontally extending first pipe length having a downwardly directed opening surrounded by a shaped engaging surface, and a downwardly extending second pipe length connected at its upper end to a funnel receiving the engaging surface.
4. A drier as claimed in claim 3, wherein the first pipe length comprises a hard resilient material.
5. A drier as claimed in either claim 3 or claim 4, wherein the engaging surface is substantially conical in shape.
6. A drier as claimed in either claim 3 or claim 4, wherein the engaging surface is substantially part spherical in shape.
7. A drier as claimed in any one of claims 3 to 6, wherein the funnel and the second pipe length form an integral unit which is inserted into an opening in the collecting container.
8. A drier as claimed in either claim 1 or claim 2, wherein the elbow comprises a first pipe length extending substantially parallel to the direction of withdrawal movement of the collecting container, and an angled second pipe length mounted to the collecting container and so arranged as to slidably engage and thereby couple with the first pipe length of reinsertion of the collecting container into the drier.
9. A drier as claimed in claim 8, wherein at least one of the first and second pipe lengths is provided with a conical surface portion arranged in the engagement region to facilitate such engagement.
10. A drier as claimed in either claim 8 or claim 9, wherein the second pipe length is integrally connected to a removable cover closing a pouring opening in the collecting container, the pouring opening being substantially larger than the opening at said open end of the elbow.
11. A household laundry drier substantially as hereinbefore described with reference to Figure 1 of the accompanying drawings.
12. A household laundry drier substantially as hereinbefore described with reference to Figure 2 of the accompanying drawings.
13. A household laundry drier substantially as hereinbefore described with reference to Figure 3 of the accompanying drawings.
14. A household laundry drier substantially as hereinbefore described with reference to Figure 4 of the accompanying drawings.
GB08300828A 1982-02-09 1983-01-13 Household laundry drier with condensate collection Expired GB2115126B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE3204412A DE3204412C2 (en) 1982-02-09 1982-02-09 Household tumble dryer with a condensate collecting container on top

Publications (3)

Publication Number Publication Date
GB8300828D0 GB8300828D0 (en) 1983-02-16
GB2115126A true GB2115126A (en) 1983-09-01
GB2115126B GB2115126B (en) 1985-10-23

Family

ID=6155166

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08300828A Expired GB2115126B (en) 1982-02-09 1983-01-13 Household laundry drier with condensate collection

Country Status (3)

Country Link
DE (1) DE3204412C2 (en)
GB (1) GB2115126B (en)
NL (1) NL8204957A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0211418A2 (en) * 1985-08-02 1987-02-25 INDUSTRIE ZANUSSI S.p.A. Condenser laundry dryer
EP0484889A1 (en) * 1990-11-06 1992-05-13 Zanker GmbH Drier with a condenser
EP0767268A1 (en) * 1995-09-28 1997-04-09 CANDY S.p.A. A front-loading condensation laundry dryer having a device for collecting the condensate in a removable container
EP1108811A1 (en) * 1999-12-14 2001-06-20 Whirlpool Corporation Condensation tumble dryer with heat exchanger and condensate collecting device
US7251905B2 (en) * 2003-12-22 2007-08-07 Lg Electronics Inc. Condensed water storing apparatus of a dryer
WO2007090701A1 (en) * 2006-02-08 2007-08-16 BSH Bosch und Siemens Hausgeräte GmbH Tumble-drier comprising a base sub-assembly
US8266815B2 (en) * 2006-02-17 2012-09-18 Bsh Bosch Und Siemens Hausgeraete Gmbh Cleaning device for a component within a process air circuit of a household tumble-dryer

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3708516A1 (en) * 1987-03-16 1988-09-29 Bosch Siemens Hausgeraete Overflow protection on a container, preferably in a laundry drier
DE3933949A1 (en) * 1989-10-11 1991-04-18 Licentia Gmbh Condensation laundry dryer - having horizontally revolving drum with hose pump
EP1584734A3 (en) * 2004-03-13 2006-06-07 Eickel u. Spindeldreher GmbH Condensing type clothes dryer
EP1674837B1 (en) * 2004-12-23 2016-10-05 Candy S.p.A. Laundry dryer machine
DE102011089118A1 (en) * 2011-12-20 2013-06-20 BSH Bosch und Siemens Hausgeräte GmbH Fluid reservoir of e.g. dryer, ha fluid tank and collection container that are hydraulically connected to each other by releasable coupling, and feed pump for pumping fluid from fluid tank into collection container
DE102020106952A1 (en) 2020-03-13 2021-09-16 Miele & Cie. Kg Liquid system for a household appliance with a liquid container

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2933513C2 (en) * 1979-08-18 1985-08-08 Miele & Cie GmbH & Co, 4830 Gütersloh Tumble dryer with condensation device

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0211418A2 (en) * 1985-08-02 1987-02-25 INDUSTRIE ZANUSSI S.p.A. Condenser laundry dryer
EP0211418A3 (en) * 1985-08-02 1988-01-27 Industrie Zanussi S.P.A. Condenser laundry dryer
EP0484889A1 (en) * 1990-11-06 1992-05-13 Zanker GmbH Drier with a condenser
EP0767268A1 (en) * 1995-09-28 1997-04-09 CANDY S.p.A. A front-loading condensation laundry dryer having a device for collecting the condensate in a removable container
EP1108811A1 (en) * 1999-12-14 2001-06-20 Whirlpool Corporation Condensation tumble dryer with heat exchanger and condensate collecting device
US7251905B2 (en) * 2003-12-22 2007-08-07 Lg Electronics Inc. Condensed water storing apparatus of a dryer
CN100462498C (en) * 2003-12-22 2009-02-18 Lg电子株式会社 Condensed water storing apparatus of a dryer
WO2007090701A1 (en) * 2006-02-08 2007-08-16 BSH Bosch und Siemens Hausgeräte GmbH Tumble-drier comprising a base sub-assembly
US8266815B2 (en) * 2006-02-17 2012-09-18 Bsh Bosch Und Siemens Hausgeraete Gmbh Cleaning device for a component within a process air circuit of a household tumble-dryer

Also Published As

Publication number Publication date
DE3204412A1 (en) 1983-08-25
GB8300828D0 (en) 1983-02-16
GB2115126B (en) 1985-10-23
DE3204412C2 (en) 1986-07-10
NL8204957A (en) 1983-09-01

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Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19930113