WO2008080799A1 - A dishwasher - Google Patents

A dishwasher Download PDF

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Publication number
WO2008080799A1
WO2008080799A1 PCT/EP2007/063929 EP2007063929W WO2008080799A1 WO 2008080799 A1 WO2008080799 A1 WO 2008080799A1 EP 2007063929 W EP2007063929 W EP 2007063929W WO 2008080799 A1 WO2008080799 A1 WO 2008080799A1
Authority
WO
WIPO (PCT)
Prior art keywords
lid
shape
cleaning agent
agent dispenser
dishwasher
Prior art date
Application number
PCT/EP2007/063929
Other languages
French (fr)
Inventor
Ertugrul Kose
Guvenc Numanoglu
Original Assignee
Arcelik Anonim Sirketi
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 Arcelik Anonim Sirketi filed Critical Arcelik Anonim Sirketi
Priority to PL07857575T priority Critical patent/PL2101627T3/en
Priority to EP20070857575 priority patent/EP2101627B1/en
Publication of WO2008080799A1 publication Critical patent/WO2008080799A1/en

Links

Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/42—Details
    • A47L15/44—Devices for adding cleaning agents; Devices for dispensing cleaning agents, rinsing aids or deodorants
    • A47L15/4409—Devices for adding cleaning agents; Devices for dispensing cleaning agents, rinsing aids or deodorants by tipping containers or opening their lids, e.g. with the help of a programmer

Definitions

  • the present invention relates to a dishwasher comprising a cleaning agent dispenser.
  • Dishwashers contain a washing chamber wherein dirty dishes are placed and a door that gives access into this chamber, opened generally downward by rotating in a horizontal axis. Inside the door, there is a cleaning agent dispenser for placing the chemicals necessary to perform the cleaning operation. During the washing process, when the washing water attains the adequate temperature, the cleaning agent dispenser opens and releases the chemicals into the washing water.
  • the cleaning agents are released into the washing water at the instant when the machine starts operating. Yet, in order to augment washing efficiency, it is preferred to release the cleaning agents into the washing water at a later stage, for instance, at the end of the pre-wash cycle. In the state of art, it's developed several applications to avoid this problem.
  • EP1723893 describes a dishwashing machine wherein the lid of the detergent dispenser closes by sliding. To enable the lid to open, springs are placed against it. The lid, while closing, presses against these springs. When the machine operates, another force applied from the opposite direction further tightens the springs through a mechanism electrically activated, and the springs in turn exert force over the lid, forcing it to open.
  • the dishwashing machine as defined in the United States patent application number US2004118434, comprises a wire with shape memory attached onto the lid of the detergent dispenser to enable the lid to open and close.
  • the wire is given an electric current that causes it to contract and pull the lid in the direction of opening.
  • the aim of the present invention is the realization of a dishwasher wherein the cleaning agent dispenser improves the release of the cleaning agents.
  • the dishwasher realized in order to attain the aim of this invention is defined in the claims attached herewith.
  • the cleaning agent dispenser employed in the dishwasher that constitutes the aim of the present invention is produced with shape memory plastic at least partially, and this section, which is produced by shape memory plastic, which is in a shape being its first shape that enables the user, at room temperature, to place the cleaning agents into the reservoir and then close the lid.
  • washing water is in contact at least with the part of the cleaning agent dispenser, which is produced with shape memory material, and there is heat exchange between them. Therefore, any change in the temperature of the washing water engenders a change in the temperature of the cleaning agent dispenser, too.
  • the temperature at which shape memory plastic will change its shape is predetermined as the washing water temperature desired for releasing the cleaning agents into the water during the washing process.
  • the section of the detergent dispenser which is made up with shape memory plastic, changes its shape and takes the second shape that enables the cleaning agents mix into the washing water.
  • the lid of the cleaning agent dispenser is closed by means of a locking mechanism.
  • the cleaning agent dispenser is equipped with a trigger produced by shape memory plastic.
  • the trigger At room temperature, the trigger is not in any contact with the locking mechanism.
  • the trigger becomes warmer with the heat that it gets from the water. Hence, the trigger attains the temperature necessary to change its shape and takes its second shape, causing the locking mechanism to open the lid.
  • the cleaning agent dispenser in order to lock the lid, is equipped with a slot and a lug produced by shape memory material.
  • the shape of the lug maintains it inside the slot and keeps the lid in a closed position.
  • the lug changes its shape, which causes it to get out of the slot and let the lid open.
  • FIG. 1 - is the schematic view of the dishwasher.
  • Figure 2 - is the perspective view of the cleaning agent dispenser with lid in closed position in an embodiment of the present invention.
  • Figure 3 - is the perspective view of the cleaning agent dispenser before the washing process with open lid ready to be loaded with cleaning agents in an embodiment of the present invention.
  • Figure 4 - is the perspective view of the cleaning agent dispenser during the washing process with lid opened to release the cleaning agents in an embodiment of the present invention.
  • Figure 5 - is the sectional view of the cleaning agent dispenser with lid in closed position, in another embodiment of the present invention.
  • Figure 6 - is the sectional view of the cleaning agent dispenser during the washing process with lid opened to release the cleaning agents in another embodiment of the present invention..
  • the elements illustrated in the figures are numbered as follows:
  • the said dishwasher (1) comprises
  • the cleaning agent dispenser (4) comprises
  • the cleaning agent dispenser (4) is produced by a shape memory plastic that changes shape, at least partially, by increasing temperature so as to change shape during the washing process -when washing water attains the adequate temperature- letting the cleaning agents pass into the washing chamber (2).
  • the section which is produced by shape memory plastic, remains in its first shape until the temperature rises up to a certain temperature (T), and from then onwards takes the second shape.
  • T a certain temperature
  • the user opens the door (3) of the dishwasher (1) and places the dishes to be cleaned into the trays of the washing chamber (2); next the user puts the cleaning agents into the reservoir (5) and closes first the lid (6) and then the door (3).
  • the shape memory plastic section of the cleaning agent dispenser (4) is in its first shape.
  • the dishwasher (1) starts operating upon the user's command. During the washing process, the washing chamber (2) is in contact with the shape memory plastic section of the cleaning agent dispenser (4).
  • the temperature of the shape memory plastic section of the cleaning agent dispenser (4) As the temperature of the water inside the machine rises, the temperature of the shape memory plastic section of the cleaning agent dispenser (4) also rises. When water attains the temperature (T) adequate for the shape memory plastic section to change shape, the shape memory plastic section of the cleaning agent dispenser (4), heated with the temperature rise of the water, takes its second shape. Hence, the cleaning agents pour out of the reservoir (5) and mix with the water.
  • the cleaning agent dispenser (4) is equipped with a locking mechanism (7), which locks the lid (6).
  • the cleaning agent dispenser (4) also has a trigger (8), which is produced with shape memory plastic.
  • the trigger (8) in its first shape at room temperature, is not in any contact with the locking mechanism (7) and does not obstruct the lid (6) to close ( Figure 3).
  • T the adequate temperature
  • it takes its second shape and that triggers the locking mechanism (7) and enables the lid (6) to open ( Figure 4).
  • the locking mechanism (7) is equipped with a slot (9) and a lug (10) produced by shape memory plastic. At its first shape, the lug (10) sits inside the slot (9) and keeps the lid (6) in a closed position ( Figure 5). But in its second shape that it takes during the washing process, when water attains the adequate temperature (T), it comes out of the slot (9) and enables the lid (6) to open ( Figure 6).
  • the dishwasher (1) realized with the present invention that comprises the cleaning agent dispenser (4) employed opens automatically due to a shape change of its shape memory section when the washing water attains the temperature required for releasing the cleaning agents into the water.
  • this invention there is no more any necessity for extra mechanisms to determine water temperature or control the opening of the cleaning agent dispenser (4) lid (6); it is the realization of a dishwasher (1) comprising a cleaning agent dispenser having a low-priced and simple production.

Landscapes

  • Washing And Drying Of Tableware (AREA)

Abstract

This invention relates to a dishwasher (1) comprising a cleaning agent dispenser (4) with an improved release of cleaning agents.

Description

Description A DISHWASHER
[0001] The present invention relates to a dishwasher comprising a cleaning agent dispenser.
[0002] Dishwashers contain a washing chamber wherein dirty dishes are placed and a door that gives access into this chamber, opened generally downward by rotating in a horizontal axis. Inside the door, there is a cleaning agent dispenser for placing the chemicals necessary to perform the cleaning operation. During the washing process, when the washing water attains the adequate temperature, the cleaning agent dispenser opens and releases the chemicals into the washing water.
[0003] In the state of art, there are several methods for locking detergent dispensers and opening them during the washing process. Among these methods, the most common one is that wherein, once the user shuts the cleaning agent dispenser, locking is maintained by a pair of slot and lug located on the door and over the cleaning agent dispenser. When the door is closed and the machine starts operating, the container is triggered by a propeller to open, and the cleaning agents are released to mix with the washing water.
[0004] In this application, however, the cleaning agents are released into the washing water at the instant when the machine starts operating. Yet, in order to augment washing efficiency, it is preferred to release the cleaning agents into the washing water at a later stage, for instance, at the end of the pre-wash cycle. In the state of art, it's developed several applications to avoid this problem.
[0005] In the state of the art, the European patent application number EP1723893 describes a dishwashing machine wherein the lid of the detergent dispenser closes by sliding. To enable the lid to open, springs are placed against it. The lid, while closing, presses against these springs. When the machine operates, another force applied from the opposite direction further tightens the springs through a mechanism electrically activated, and the springs in turn exert force over the lid, forcing it to open.
[0006] In another application known in the state of the art, the dishwashing machine as defined in the United States patent application number US2004118434, comprises a wire with shape memory attached onto the lid of the detergent dispenser to enable the lid to open and close. When opening the lid, the wire is given an electric current that causes it to contract and pull the lid in the direction of opening.
[0007] Only, this application and similar other applications have requirements which increase production and labor cost, such as a control mechanism to manage the opening and closing of the lid, transmission of electricity through wires up to the point where the cleaning agent dispenser is located, and sensors to detect whether or not the washing water has attained the adequate temperature for opening the lid.
[0008] The aim of the present invention is the realization of a dishwasher wherein the cleaning agent dispenser improves the release of the cleaning agents. [0009] The dishwasher realized in order to attain the aim of this invention is defined in the claims attached herewith.
[0010] The cleaning agent dispenser employed in the dishwasher that constitutes the aim of the present invention is produced with shape memory plastic at least partially, and this section, which is produced by shape memory plastic, which is in a shape being its first shape that enables the user, at room temperature, to place the cleaning agents into the reservoir and then close the lid.
[0011] During the washing process, washing water is in contact at least with the part of the cleaning agent dispenser, which is produced with shape memory material, and there is heat exchange between them. Therefore, any change in the temperature of the washing water engenders a change in the temperature of the cleaning agent dispenser, too. The temperature at which shape memory plastic will change its shape is predetermined as the washing water temperature desired for releasing the cleaning agents into the water during the washing process. During washing, when washing water attains the adequate temperature, the section of the detergent dispenser, which is made up with shape memory plastic, changes its shape and takes the second shape that enables the cleaning agents mix into the washing water.
[0012] In one embodiment of the present invention, the lid of the cleaning agent dispenser is closed by means of a locking mechanism. In this embodiment, the cleaning agent dispenser is equipped with a trigger produced by shape memory plastic. At room temperature, the trigger is not in any contact with the locking mechanism. During washing, as the washing water temperature rises, the trigger becomes warmer with the heat that it gets from the water. Hence, the trigger attains the temperature necessary to change its shape and takes its second shape, causing the locking mechanism to open the lid.
[0013] In another embodiment of the invention, in order to lock the lid, the cleaning agent dispenser is equipped with a slot and a lug produced by shape memory material. At room temperature, the shape of the lug maintains it inside the slot and keeps the lid in a closed position. During the washing process, however, when water reaches the adequate temperature, the lug changes its shape, which causes it to get out of the slot and let the lid open.
[0014] In these embodiments, since the lid of the cleaning agent dispenser opens automatically once washing water attains the adequate temperature for adding cleaning agents, there is not any necessity for extra mechanisms to determine the water temperature or to control the opening of the cleaning agent dispenser.
[0015] By means of the dishwasher in the present invention, there is no more any necessity to any extra mechanism for determination of water temperature or controlling the opening of the cleaning agent dispenser; it is therefore the realization of a dishwasher comprising a cleaning agent dispenser having low-priced and simple production.
[0016] A dishwasher realized in order to attain of the aim of the present invention is illustrated in the attached figures, where: [0017] Figure 1 - is the schematic view of the dishwasher.
[0018] Figure 2 - is the perspective view of the cleaning agent dispenser with lid in closed position in an embodiment of the present invention. [0019] Figure 3 - is the perspective view of the cleaning agent dispenser before the washing process with open lid ready to be loaded with cleaning agents in an embodiment of the present invention. [0020] Figure 4 - is the perspective view of the cleaning agent dispenser during the washing process with lid opened to release the cleaning agents in an embodiment of the present invention. [0021] Figure 5 - is the sectional view of the cleaning agent dispenser with lid in closed position, in another embodiment of the present invention.. [0022] Figure 6 - is the sectional view of the cleaning agent dispenser during the washing process with lid opened to release the cleaning agents in another embodiment of the present invention.. [0023] The elements illustrated in the figures are numbered as follows:
1. Dishwasher
2. Washing chamber
3. Door
4. Cleaning agent dispenser
5. Reservoir
6. Lid
7. Locking mechanism
8. Trigger
9. Slot
10. Lug
[0024] The said dishwasher (1) comprises
- a washing chamber (2) wherein dirty dishes are placed to be cleaned,
- a door (3) which gives access to this washing chamber (2),
- a cleaning agent dispenser (4) wherein cleaning agents are placed to be released into the washing chamber during the washing process. (Figure 1)
[0025] The cleaning agent dispenser (4) comprises
- at least one reservoir (5) wherein cleaning chemicals are placed and,
- a lid (6) covering this reservoir (5) (Figure 2 and Figure 3).
[0026] The cleaning agent dispenser (4) is produced by a shape memory plastic that changes shape, at least partially, by increasing temperature so as to change shape during the washing process -when washing water attains the adequate temperature- letting the cleaning agents pass into the washing chamber (2).
[0027] The section, which is produced by shape memory plastic, remains in its first shape until the temperature rises up to a certain temperature (T), and from then onwards takes the second shape. [0028] The user opens the door (3) of the dishwasher (1) and places the dishes to be cleaned into the trays of the washing chamber (2); next the user puts the cleaning agents into the reservoir (5) and closes first the lid (6) and then the door (3). At this stage, the shape memory plastic section of the cleaning agent dispenser (4) is in its first shape. The dishwasher (1) starts operating upon the user's command. During the washing process, the washing chamber (2) is in contact with the shape memory plastic section of the cleaning agent dispenser (4). As the temperature of the water inside the machine rises, the temperature of the shape memory plastic section of the cleaning agent dispenser (4) also rises. When water attains the temperature (T) adequate for the shape memory plastic section to change shape, the shape memory plastic section of the cleaning agent dispenser (4), heated with the temperature rise of the water, takes its second shape. Hence, the cleaning agents pour out of the reservoir (5) and mix with the water.
[0029] In one embodiment of the present invention, the cleaning agent dispenser (4) is equipped with a locking mechanism (7), which locks the lid (6). In this embodiment, the cleaning agent dispenser (4) also has a trigger (8), which is produced with shape memory plastic. The trigger (8), in its first shape at room temperature, is not in any contact with the locking mechanism (7) and does not obstruct the lid (6) to close (Figure 3). However, during the washing process, when water attains the adequate temperature (T), it takes its second shape and that triggers the locking mechanism (7) and enables the lid (6) to open (Figure 4).
[0030] In another embodiment of the present invention, the locking mechanism (7) is equipped with a slot (9) and a lug (10) produced by shape memory plastic. At its first shape, the lug (10) sits inside the slot (9) and keeps the lid (6) in a closed position (Figure 5). But in its second shape that it takes during the washing process, when water attains the adequate temperature (T), it comes out of the slot (9) and enables the lid (6) to open (Figure 6).
[0031] In the dishwasher (1) realized with the present invention that comprises the cleaning agent dispenser (4) employed opens automatically due to a shape change of its shape memory section when the washing water attains the temperature required for releasing the cleaning agents into the water. With this invention, there is no more any necessity for extra mechanisms to determine water temperature or control the opening of the cleaning agent dispenser (4) lid (6); it is the realization of a dishwasher (1) comprising a cleaning agent dispenser having a low-priced and simple production.

Claims

Claims
[0001] A dishwasher (1) comprising: - a washing chamber (2) wherein the dishes are placed to be cleaned, - a door (3) which gives access into this washing chamber (2), - a cleaning agent dispenser (4) comprising at least one reservoir (5), wherein cleaning agents are placed, and a lid (6) covering this reservoir; - and characterized by the cleaning agent dispenser (4) produced by shape memory plastic changing shape with temperature rise at least partially so as to change shape during the washing process when wash water attains the temperature required for releasing the cleaning agents into the washing chamber (2).
[0002] A dishwasher (1) as defined in Claim 1, characterized by the cleaning agent dispenser (4) comprising a locking mechanism (7) that enables the lid (6) to lock, and a trigger (8) produced by shape memory plastic, which is in its first shape at room temperature and does not touch the locking mechanism (7), but which, in the second shape that it takes when heated, triggers the locking mechanism (7) and causes the lid (6) to open.
[0003] A dishwasher (1) as defined in Claim 1, characterized by the cleaning agent dispenser (4) having the locking mechanism (7) comprising a slot (9) and a lug (10) produced by shape memory plastic, which, in its first shape at room temperature, sits inside the slot (9) and keeps the lid (6) in a closed position but which, in its second shape that it takes when heated, comes out of the slot (9) and enables the lid (6) to open.
PCT/EP2007/063929 2006-12-29 2007-12-14 A dishwasher WO2008080799A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PL07857575T PL2101627T3 (en) 2006-12-29 2007-12-14 A dishwasher
EP20070857575 EP2101627B1 (en) 2006-12-29 2007-12-14 A dishwasher

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR2006/07689 2006-12-29
TR200607689 2006-12-29

Publications (1)

Publication Number Publication Date
WO2008080799A1 true WO2008080799A1 (en) 2008-07-10

Family

ID=39287624

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2007/063929 WO2008080799A1 (en) 2006-12-29 2007-12-14 A dishwasher

Country Status (3)

Country Link
EP (1) EP2101627B1 (en)
PL (1) PL2101627T3 (en)
WO (1) WO2008080799A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8529705B2 (en) 2009-12-17 2013-09-10 Whirlpool Corporation Method and apparatus of controlling the release of cleaning agents into a dishwasher cycle
US10028635B2 (en) 2013-04-24 2018-07-24 Whirlpool Corporation Methods for dispensing a treating chemistry in a dishwasher

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0398478A1 (en) * 1989-03-27 1990-11-22 Sheldon Bowie Stuart Temperature release containers
DE4012579A1 (en) * 1990-04-20 1991-10-24 Bauknecht Hausgeraete Electric dishwasher cleaning agent container - has closure spring made of memory metal for opening at specific temp.
JPH03297435A (en) * 1990-04-17 1991-12-27 Funai Electric Co Ltd Dish washer
WO2006021760A1 (en) * 2004-08-23 2006-03-02 Reckitt Benckiser N.V. Detergent dispensing device
DE102005011137A1 (en) * 2005-03-10 2006-09-14 BSH Bosch und Siemens Hausgeräte GmbH Dishwasher with a detergent dispenser
EP1723893A2 (en) * 2005-05-16 2006-11-22 Elbi International SPA Device for distributing a washing agent, particularly for a dishwasher

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0398478A1 (en) * 1989-03-27 1990-11-22 Sheldon Bowie Stuart Temperature release containers
JPH03297435A (en) * 1990-04-17 1991-12-27 Funai Electric Co Ltd Dish washer
DE4012579A1 (en) * 1990-04-20 1991-10-24 Bauknecht Hausgeraete Electric dishwasher cleaning agent container - has closure spring made of memory metal for opening at specific temp.
WO2006021760A1 (en) * 2004-08-23 2006-03-02 Reckitt Benckiser N.V. Detergent dispensing device
DE102005011137A1 (en) * 2005-03-10 2006-09-14 BSH Bosch und Siemens Hausgeräte GmbH Dishwasher with a detergent dispenser
EP1723893A2 (en) * 2005-05-16 2006-11-22 Elbi International SPA Device for distributing a washing agent, particularly for a dishwasher

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8529705B2 (en) 2009-12-17 2013-09-10 Whirlpool Corporation Method and apparatus of controlling the release of cleaning agents into a dishwasher cycle
US10028635B2 (en) 2013-04-24 2018-07-24 Whirlpool Corporation Methods for dispensing a treating chemistry in a dishwasher

Also Published As

Publication number Publication date
EP2101627A1 (en) 2009-09-23
EP2101627B1 (en) 2015-04-29
PL2101627T3 (en) 2015-10-30

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