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Publication numberEP2038397 A1
Publication typeApplication
Application numberEP20070748180
PCT numberPCT/SE2007/000516
Publication date25 Mar 2009
Filing date28 May 2007
Priority date26 May 2006
Also published asEP2038397A4, WO2007139473A1
Publication number07748180, 07748180.2, 2007748180, EP 2038397 A1, EP 2038397A1, EP-A1-2038397, EP07748180, EP20070748180, EP2038397 A1, EP2038397A1, PCT/2007/516, PCT/SE/2007/000516, PCT/SE/2007/00516, PCT/SE/7/000516, PCT/SE/7/00516, PCT/SE2007/000516, PCT/SE2007/00516, PCT/SE2007000516, PCT/SE200700516, PCT/SE7/000516, PCT/SE7/00516, PCT/SE7000516, PCT/SE700516
InventorsHåkan HåKANSSON, Per Sandberg
ApplicantGs Development Ab
Export CitationBiBTeX, EndNote, RefMan
External Links: Espacenet, EP Register
Dishwashing member for a granule dishwasher
EP 2038397 A1 (text from WO2007139473A1) 
Abstract  
A dishwashing member for a granule dishwasher, the member comprising plastic granules, where the member is provided with indicators, which provides the user of the granule dishwasher with wear information of the plastic granules.
Claims  (OCR text may contain errors)
1. A dishwashing member for a granule dishwasher machine comprising plastic granules, characterized in that the dishwashing member comprises wear indicators providing wear information of the plastic granules.
2. A dishwashing member according to claim 1, wherein the information of the indicators provides information about when to refill plastic granules into the granule dishwasher.
3. A dishwashing member according to claim 1 or 2, wherein the wear indicators are formed by first and a second set of plastic granules.
4. A dishwashing member according to claim 3, wherein the first and the second set of plastic granules have different physical characteristics, such as color, weight, plastic parts, wear resistance.
5. A dishwashing member according to claim 3, wherein the first and the second sets of plastic granules comprise a filling material, wherein the filling material of the second set of plastic granules is different from the filling material of the first set of plastic granules.
6. A dishwashing member according to claim 5, wherein the filling material is a material selected from the group comprising: plastic, glass, glass beads, dishwashing detergent or any other suitable filling material .
7. A dishwashing member according to claim 6, wherein the first set of plastic granules is provided with a different color than the second set of plastic granules.
8. A dishwashing member according to any of claims 1 to 3, wherein the first set of plastic granules is made of a single plastic material.
9. A dishwashing member according to claim 8, wherein the second set of plastic granules comprises a core and a coating surrounding the core, and where the core and the coating have different colours.
10. A dishwashing member according to claim 8, wherein the material of the coating is less wear resistant than the material of the core.
11. A dishwashing member according to claim 10, wherein the first set of plastic granules and the core of the second set of plastic granules are made of the same plastic material.
12. A method of indicating the wear of plastic granules in a granule dishwasher machine, characterized by the use of a dishwashing member according to any of claims 1 to 11.
Description  (OCR text may contain errors)

Dishwashing member for a granule dishwasher

AREA OF INVENTION

The present invention relates to a dishwashing member, and more specifically to a dishwashing member for granule dishwasher machines .

BACKGROUND OF INVENTION Granule dishwasher units or granule potwasher units are known per se. These dishwasher units use specially designed plastic granules or the like that are thrown with high impact together with a clean liquid and/or water towards the dish to be cleanded in order to clean the dish. EP-Bl-O 169 847 discloses such an apparatus and method.

Before the first use, the granule dishwasher machine is filled with an amount of the plastic granules. While the dishwasher machine is used, the plastic granules are exposed to wear and small pieces of the plastic granules will wear off. As a result, the amount of granules decreases and the washing effect deteriorates .

With maintenance of the granule dishwasher machines, granules may be added continuously or at frequent intervals. This may take place when the granule dishwasher machine is located in institutional kitchens, such as schools, hospitals, nursing homes etc., where the staff handling the dishwasher machine is experienced and competent .

Another group of granule dishwasher machine users are restaurants. Granule dishwasher machines used in restaurants may in many instances be not very well maintained, due to both the lack of experience and competence of the staff, but also due to the usage pattern of the granule dishwasher machines. The granule dishwasher machines in restaurants are sometimes used throughout the day, seven days a week, whereas the granule dishwasher machines in institutional kitchens may be used once or twice a day, five days a week. In restaurants, the staff often dishes the dish twice in the granule dishwasher machine when the dishwashing efficiency deteriorates.

The user may use the granule collector/collectors for checking the amount of plastic granules left, if the user has installed a granule collector. Not every user has, however, invested in a granule collector or uses it, and need for that reason a tool for the indication of the plastic granule wear.

SUMMARY OF INVENTION

Accordingly, an object of the present invention is to mitigate, alleviate or eliminate one or more of the above- identified deficiencies and disadvantages singly or in any combination.

According to an aspect, there is provided a dishwashing member for a granule dishwasher machine comprising plastic granules, wherein the dishwashing member comprises wear indicators providing wear information of the plastic granules .

The information of the indicators may provide information about when to refill plastic granules into the granule dishwasher. In an embodiment, the wear indicators are formed by first and a second set of plastic granules. The first and the second set of plastic granules may have different physical characteristics, such as color, weight, plastic parts, wear resistance. The first and the second sets of plastic granules may comprise a filling material, wherein the filling material of the second set of plastic granules may be different from the filling material of the first set of plastic granules. The filling material may be a material selected from the group comprising: plastic, glass, glass beads, dishwashing detergent or any other suitable filling material. The first set of plastic granules may be provided with a different color than the second set of plastic granules. The first set of plastic granules may be made of a single plastic material. The second set of plastic granules may comprise a core and a coating surrounding the core, and where the core and the coating may have different colours. The material of the coating may be less wear resistant than the material of the core. The first set of plastic granules and the core of the second set of plastic granules are made of the same plastic material.

In another aspect, there is provided a method of indicating the wear of plastic granules in a granule dishwasher machine, using of a dishwashing member as described above.

BRIEF DESCRIPTION OF THE DRAWINGS

Further objects, features and advantages of the invention will become apparent from the following detailed description of embodiments of the invention with reference to the drawings, in which:

Fig. 1 is a block diagram of a first embodiment of the invention.

Fig. 2 is a diagram similar to Fig. 1 of a second embodiment of the invention. Fig. 3 is a diagram similar to Fig. 1 of a third embodiment of the invention.

Fig. 4 is a diagram similar to Fig. 1 of a fourth embodiment of the invention.

DETAILED DESCRIPTION OF EMBODIMENTS

The principles of granule dishwashing or pot washing are based on washing using specially developed plastic granules with water and detergent. Before use, plastic granules are provided into the dishwasher machine; detergent is provided as a detergent dispenser dispensing detergent as the need arises; and water is supplied via water pipes connected to the dishwasher. A forceful flow of water and plastic granules is diverted at high pressure over the pots through specially designed nozzles. When the plastic granules impact burnt and dried up food remains at high speed, the pots are literally scoured clean. This scouring action guarantees truly clean pots and pans. Food remains vanish without soaking or scrubbing by hand. After the mechanical treatment with the plastic granules, a washing cycle with only water follows. During the water flushing any remaining granules are rinsed off the pots and the pans.

The washing cycle ends with a final rinse with clean water. The final rinse may take place at a high temperature. The time, flow and temperature of the rinse water are controlled to ensure a hygienic result.

Depending on the amount of remaining plastic granules and the supplied detergent, the quality or the efficiency of the dishwashing varies. The plastic granules are mechanically worn during the use, and after roughly 2000-

2500 dishes, the amount of granules may be reduced by up to 30%.

To provide the user of the granule dishwasher with information of the plastic granule wear and to inform the user about the need of refilling plastic granules into the granule dishwasher, the plastic granules are arranged with wear indicators, which will be explained below.

The granules or the granule components are made of an acetal polymer, POM, polyoxymethylenoxide . This material has been approved for use in connection with food and is not dangerous if ingested. Other plastic materials can also be used as the granule component as long as the material has been approved for use in connection with food and the material is not dangerous to man. The plastic granules have been developed to have the right shape and to be sufficiently hard to remove all 'food remains effectively at the same time as being sufficiently soft so that they do not damage the dishes.

The granule wear indicator can be arranged in various forms, but the color of the plastic granules may be used as wear indicator. By having two sets of plastic granules filled into the granule dishwasher, the two sets of plastic granules can be colored differently and having different physical characteristics, plastic material, weight, plastic parts, wear resistance, etc. so that the two sets of plastic granules are worn differently, thus being an indicator of the plastic granule wear.

In a first embodiment shown in Fig. 1, the first set 12 of plastic granules, contained in a dishwasher machine 10, can e.g. be colored with a light blue color and the second set 11 of plastic granules can be colored with a dark blue color. Furthermore, the first set of plastic granules is made of a more wear-resistant plastic material than the second set of plastic granules. Thus, the dark blue colored plastic granules 11 will be worn faster and the user can easily use the relative amount of the two sets of colored plastic granules as the wear indicator of the plastic granules.

Accordingly, the relative amount of the two sets of colored plastic granules is an indication of the need to refill plastic granules. The refill of plastic granules is typically made of both the first and the second set of plastic granules, but adding relatively more of the dark blue colored plastic granules to restore the equal amount of the two sets of plastic granules. Only the second set of plastic granules, the dark blue colored granules, can also be refilled, but eventually the total amount of plastic granules will be lowered to a level where the efficiency of the plastic granules is too low. The two sets of plastic granules can also be formed differently in such a way that the first set of plastic granules comprises a filling material, and the second set of plastic granules do not comprise a filling material or that the filling material of the two sets of plastic granules is not the same. The filling material can be any material from the group: plastic, glass, glass beads, dishwashing detergent or any other suitable filling material . The plastic granules can also be formed so that the filling material actually is a core of the plastic granule of a first color, which is surrounded by a coating, said coating having a second color different from the first color. The core and coating can either be made of the same plastic material or by different plastic materials. Any other combination of the above-mentioned embodiments is also possible.

The color of the plastic granules is not limited to the exemplified color, but can be any suitable color that easily provides an operator of the granule dishwasher with the best indication of the plastic granule wear.

The invention is not limited to the embodiments described above and shown on the drawings, but can be supplemented and modified in any manner within the scope of the invention as defined by the enclosed claims.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US4804488 *27 Mar 198514 Feb 1989Arne AlvemarkerBlasting bodies adapted for cleaning utensils in dish-washing machines
US5584767 *7 Jun 199517 Dec 1996Columbia Industries, Inc.Bowling ball finger insert having a wear indicator
US5906834 *9 Oct 199625 May 1999The Gillette CompanyColor changing matrix as wear indicator
US6513370 *17 Apr 19984 Feb 2003Mark HeltonWear indicator for sports balls
US20030232734 *30 Apr 200318 Dec 2003Kitko David JohnathanDetergent compositions and components thereof
US20040134010 *15 Sep 200315 Jul 2004The Gillette Company, A Delaware CorporationColor changing matrix as wear indicator
WO2004053004A1 *5 Dec 200324 Jun 2004Polaroid CorporationWater-immersion indicator indicia and articles bearing such indicia
Non-Patent Citations
Reference
1 *No further relevant documents disclosed
2 *See also references of WO2007139473A1
Classifications
International ClassificationA47L15/44, C11D11/00, C11D3/40, C11D3/37, C11D17/04, B08B9/38, A47L15/00
Cooperative ClassificationC11D11/0023, A47L15/44, C11D3/37, A47L15/0094, A47L15/0002, C11D17/04, A47L2601/18, C11D3/40
European ClassificationA47L15/00A, A47L15/44, A47L15/00L, C11D17/04, C11D11/00B2D, C11D3/37, C11D3/40
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7 Jul 2010RIC1Classification (correction)
Ipc: C11D 3/37 20060101ALI20100602BHEP
Ipc: A47L 15/44 20060101ALI20100602BHEP
Ipc: C11D 17/04 20060101AFI20080219BHEP
Ipc: A47L 15/00 20060101ALI20100602BHEP
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Ipc: B08B 9/38 20060101ALI20100602BHEP
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Effective date: 20100609
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13 Apr 2011RIC1Classification (correction)
Ipc: B08B 9/38 20060101ALI20110309BHEP
Ipc: C11D 3/37 20060101ALI20110309BHEP
Ipc: C11D 3/40 20060101ALI20110309BHEP
Ipc: C11D 17/04 20060101AFI20110309BHEP
Ipc: A47L 15/44 20060101ALI20110309BHEP
Ipc: A47L 15/00 20060101ALI20110309BHEP
4 May 201117QFirst examination report
Effective date: 20110404
21 Jan 2015RIC1Classification (correction)
Ipc: C11D 3/40 20060101ALI20141212BHEP
Ipc: C11D 3/37 20060101ALI20141212BHEP
Ipc: C11D 17/04 20060101AFI20141212BHEP
Ipc: B08B 9/38 20060101ALI20141212BHEP
Ipc: C11D 11/00 20060101ALI20141212BHEP
Ipc: A47L 15/00 20060101ALI20141212BHEP
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