WO1999029443A1 - Article cleaning apparatus - Google Patents

Article cleaning apparatus Download PDF

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Publication number
WO1999029443A1
WO1999029443A1 PCT/AU1998/001021 AU9801021W WO9929443A1 WO 1999029443 A1 WO1999029443 A1 WO 1999029443A1 AU 9801021 W AU9801021 W AU 9801021W WO 9929443 A1 WO9929443 A1 WO 9929443A1
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WO
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Application
Patent type
Prior art keywords
means
cleaning
fluid
cleaning apparatus
apparatus according
Prior art date
Application number
PCT/AU1998/001021
Other languages
French (fr)
Inventor
Earl Fenton Goddard
Original Assignee
Aquajet Technologies Limited
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

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B08CLEANING
    • B08BCLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/04Cleaning involving contact with liquid
    • B08B3/10Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity, by vibration
    • B08B3/14Removing waste, e.g. labels, from cleaning liquid; Regenerating cleaning liquids
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B08CLEANING
    • B08BCLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/02Cleaning by the force of jets or sprays

Abstract

The present invention relates to a cleaning apparatus for cleaning articles. In particular, the preferred embodiments of the present invention relate to an industrial cleaning apparatus for cleaning mechanical components and, more particularly, to a parts washer for engine parts. The present invention provides a cleaning apparatus (1) for cleaning articles comprising: a housing means (2, 3) for, in use, holding cleaning fluid (13) and the articles; at least one fluid dispensing means (6, 30) for, in use, dispensing the cleaning fluid onto the articles in the housing means (2, 3); and a purging means (23, 29) for purging the cleaning fluid from the housing means (2, 3); and a pump means (8) connected to the fluid dispensing means (6, 30) and the purging means (23, 29), wherein the pump means (8) is capable of pumping the cleaning fluid (13) to the fluid dispensing means (6, 30) when cleaning the articles and is capable of pumping the cleaning fluid to the purging means (23, 29) when purging the cleaning fluid from the housing means (2, 3). The advantage of the preferred embodiment of the present invention is that a single pump means (8) can be used to both clean the articles and to pump the cleaning fluid from the cleaning apparatus. This provides for a simpler, more compact and cheaper design and allows the operator of the cleaning apparatus greater freedom to purge the cleaning fluid when required.

Description

ARTICLE CLEANING APPARATUS

TECHNICAL FIELD

The present invention relates to a cleaning apparatus for cleaning articles. In particular, the preferred embodiments of the present invention relate to an industrial cleaning apparatus for cleaning mechanical components and, more particularly, to a parts washer for engine parts.

BACKGROUND ART

Various industries, such as the automotive, mining, marine engineering and aircraft industry, use various methods to clean articles, such as mechanical components, which have been covered with oil, grease and dirt.

Known cleaning systems comprise a housing in which the articles which are to be cleaned can be placed. The housing includes a cavity in which cleaning fluid is stored. In use, the cleaning fluid is pumped from the cavity and sprayed over the articles and the cleaning fluid is then allowed to collect again in the cavity for repeated spraying over the components .

Once the cleaning fluid becomes too dirty or ineffective, the cleaning fluid is drained from the cleaning apparatus.

Known systems allow the cleaning fluid to be drained from the cleaning apparatus by a simple drain hole in the apparatus. This allows the cleaning fluid to flow onto the ground or into a domestic drain. However, this practice is not environmentally acceptable.

In another known system the cleaning fluid is pumped from the cleaning apparatus by a waste liquid removal vehicle. The . ~

vehicle generally visits at regular interval and is connected to the cleaning apparatus to pump the contaminated cleaning fluid out of the cleaning apparatus.

However, this system suffers from the disadvantage that the operator of the cleaning apparatus cannot purge the cleaning apparatus at the optimal time for doing so as the assistance of a waste liquid removal vehicle is required. If the cleaning fluid becomes dirty well before the arrival of the waste liquid removal vehicle, the dirty cleaning fluid continues to be used, which may damage to the cleaning apparatus and leave dirt particles on the articles. Similarly, the waste water removal vehicle may arrive too early when the cleaning fluid is still relatively clean, resulting in the removal of cleaning fluid which is still effective. This wastes resources unnecessarily.

It is further known to attach a separate pump to the cleaning apparatus to pump the dirty cleaning fluid from the cleaning apparatus .

DISCLOSURE OF INVENTION

The present invention attempts to overcome one or more of the above disadvantages of the prior art.

According to the present invention there is provided a cleaning apparatus for cleaning articles comprising: a housing means for, in use, holding cleaning fluid and the articles; at least one fluid dispensing means for, in use, dispensing the cleaning fluid onto the articles in the housing means; and a purging means for purging the cleaning fluid from the housing means; and a pump means connected to the fluid dispensing means and the purging means, wherein the pump means is capable of pumping the cleaning fluid to the fluid dispensing means when cleaning the articles and is capable of pumping the cleaning fluid to the purging means when purging the cleaning fluid from the housing means.

It is preferred that the at least one fluid dispensing means is located in an upper volume of the housing means such that, in use, the at least one fluid dispensing means is capable of spraying the cleaning fluid onto the articles in the upper volume.

It is further preferred that the pump means includes a valve means capable of being set such that, in use, the pump means pumps the cleaning fluid either to the at least one fluid dispensing means or to the purging means (23, 29) .

It is further preferred that the cleaning apparatus is substantially cylindrically shaped.

Preferably, the cleaning apparatus further comprising at least one baffle plate, the at least one baffle plate being capable of substantially separating dirt and foreign matter from the cleaning fluid.

It is further preferred that the fluid dispensing means is comprised of a spray head pivotally attached to the upper shell of the housing, such that the spray head is capable of pivoting between a first and a second position.

BRIEF DESCRIPTION OF DRAWINGS

Preferred embodiments of the present invention will be described below, by way of example only, with reference to the following drawings : Figure 1 shows a front perspective view of a preferred embodiment of the cleaning apparatus of the present invention;

Figure 2 shows a rear perspective view of the preferred embodiment of the present invention;

Figure 3 shows a rear perspective view of the internal components of the preferred embodiment of the present invention;

Figure 4 shows a cross sectional side view of the preferred embodiment of the present invention;

Figure 5 shows detail of the second fluid dispensing means of a preferred embodiment of the present invention; and

Figures 6a, 6b and 6c show details of the first fluid dispensing means of a preferred embodiment of the present invention.

DESCRIPTION OF THE PREFERRED EMBODIMENTS

The cleaning apparatus 1 of the preferred embodiment of the present invention, as shown in Figure 1, is comprised of a housing means comprising a lower shell 2 and an upper shell 3 which are connected together by hinge 20. When the upper shell 3 is in a raised position, as shown in Figure 1 and 2, it is possible to access the inside of the cleaning apparatus 1.

The cleaning apparatus of the preferred embodiment is further provided with an enclosure 5, attached to the side of the lower shell 3, for enclosing a pump means 8 (shown in Figure 4) . A control panel 7 may be located on top of the enclosure 5 for controlling the operation of the cleaning apparatus 1.

Figure 4 shows a cross section of the preferred embodiment shown in Figures 1, 2 and 3 with the upper shell 3 in a lowered position. When the upper shell 3 is in the lowered position, the cleaning apparatus 1 preferably has a substantially cylindrical shape. It is further preferable that the shape is substantially similar to that of a 200 litre (44 gallon) drum. This preferred embodiment of the present invention is particularly advantageous as it can be easily located and moved and also provides an optimal use of space.

When the upper shell 3 is in the lowered position, the upper shell 3 and the lower shell 2 preferably form a cavity comprising a lower volume 21 for storing cleaning fluid 13 and an upper volume 22 in which the articles can be located.

It is preferred that a rubber seal 17 is provided between the shells 2, 3 such that, when the upper shell 3 is in the lowered position, the shells 2, 3 form a sealed cavity.

When using the preferred embodiment of the invention, the cleaning fluid 13 is placed in the lower volume 21 up to fluid level 14. The cleaning fluid 13 is typically comprised of water with a detergent used for dissolving grease and dirt.

The upper volume 22 is preferably provided with a basket 4. In use, articles (not shown) which need to be cleaned are placed in the basket 4 and suspended in the upper volume 22.

It is further preferred that a fluid dispensing means comprising first fluid dispensing means 6, having fluid dispensing pipes 15 and spray nozzles 16, is also provided inside the upper volume 22. The first fluid dispensing means 6 may be connected to the upper shell 3 and/or to the lower shell 2 so as substantially to surround the basket 4 and any articles therein.

Preferably, a filter 11 is provided in the lower volume 21. The filer 11 is preferably attached on the inside of the lower shell 2 to an outlet 9. One end of an outlet pipe 10 is connected to the outlet 9 on the outside of the lower shell 2 and the other end of the outlet pipe 10 is connected to the pump means 8 in the enclosure 5. In use, when the cleaning fluid 13 is pumped from the lower volume 21 by the pump means 8, the filter 11 filters dirt and other contaminants from the cleaning fluid 13. As a result of the filtering, a sludge will form in the bottom of the lower volume 21.

The pump means 8 is comprised of a single pump 8 which is capable of pumping the cleaning fluid from the lower volume 21.

As shown in Figures 2 and 3, the pump means 8 is also preferably connected to a first hose 23 which is connected to a main valve 24. It is preferred that the main valve 24 is a ball valve. A second hose 25 and a third hose 26 are preferably connected to the main valve 24. The second hose 25 may be connected to the fluid dispensing pipe 15 in the lower shell 2 and the third hose 26 may be connected to the fluid dispensing pipe 15 in the upper shell 3.

In a cleaning mode, the articles are preferably placed in the basket 4 and the upper shell 3 is closed. A connecting rod 27 is preferably provided between upper shell 3 and the main valve 24 to actuate the main valve 24 such that, when the upper shell 3 is closed, the main valve 24 is open and when the upper shell 3 is open, the main valve 24 is closed. Thus, when the main valve 24 is open, the pump means 8 is capable of pumping cleaning fluid from the lower volume 21 through the filter 11, the outlet 9, the outlet pipe 10, the first hose 23, the main valve 24, the second and third hoses 25, 26 and the fluid dispensing pipes 15 to the nozzles 16. The cleaning fluid thus sprays through the nozzles 16 onto the articles in the basket 4 to clean grease and dirt off the articles.

In an alternative embodiment, the main valve 24 can be controlled manually or electronically from the control panel 7. Cleaning fluid that has been sprayed onto the articles drip down back into the lower volume 21 where it can be repeatedly sprayed onto the articles.

It is further preferred that the cleaning apparatus 1 according to the present invention is provided with a purge pipe 29 for purging cleaning fluid from the cleaning apparatus 1. The purge pipe 29 is connected to the first hose 23 through a purge valve 28.

In a purging mode, the upper shell 2 is preferably opened which action closes the main ball valve 24. The purge valve 28 can then be opened manually or can be controlled from the control panel 7. As a result, when the pump means 8 is activated, it pumps the cleaning fluid from the lower value 21 to the purge pipe 29. The cleaning fluid which is purged via the purge pipe 29 can then be stored in a convenient holding tank until it is ready to be pumped to a waste liquid disposal truck or otherwise disposed, such as by a waste water evaporator.

The advantage of this preferred embodiment is that a single pump can be used to both clean the articles and to pump the cleaning fluid from the cleaning apparatus. This provides for a simpler, more compact and cheaper design and allows the operator of the cleaning apparatus greater freedom to purge the cleaning fluid when required, rather than when a waste liquid disposal truck is available. The cleaning apparatus of the preferred embodiment is easier to install, reduces manuf cturing costs reduces servicing costs.

According to another preferred embodiment of the present invention, first and second baffles plates 12a, 12b are provided in the lower volume 21. The baffle plates 12a, 12b are provided to allow for the efficient flow of the cleaning fluid. The first baffle plate 12a is positioned vertically on the bottom of the lower shell 2 and proximate the filter 11. The second baffle plate 12b is positioned so that one of its ends is above the fluid level 14 and the other end is proximate the bottom of the lower shell 2. The second baffle plate 12b is sloped to the vertical so that the bottom of the baffle plate 12b is sloped away from the first baffle plate 12a, as shown in Figure 4.

When the cleaning fluid drips from the articles during the cleaning mode, the cleaning fluid flows over the second baffle plate 12b and the first baffle plate 12a which encourages contaminants to settle in the bottom of the lower shell 2 to form a sludge and assists in preventing the sludge from blocking the filter 11.

It is preferable that the baffle plates 12a, 12b are removed during the purging mode to allow the sludge to drain. It is further preferred that the baffle plates 12a, 12b are connected to the upper shell 3 such that when the upper shell 3 is raised, the baffle plates 12a, 12b are raised from the lower volume 21 so as to assist in getting access to the lower volume 21, particularly for cleaning purposes.

It is further preferred that low and high cleaning fluid level switches (not shown) are provided to ensure that the cleaning fluid level is maintained at an optimum level.

It is also preferred that a heating means 19 is provided in the lower volume 21 to heat the cleaning fluid. This assists in cleaning the articles more rapidly and thoroughly.

A further problem in a known cleaning apparatus is that 3 -phase power is required in order to operate the pump in the cleaning apparatus and cleaning fluid heating element within the cleaning apparatus. Such a pump and heating element requires substantial amounts of power which can only realistically be provided by 3 phase power. Such 3 phase power supplies are not always readily available. In a further preferred embodiment of the present invention, the power usage of the apparatus 1 is limited to a maximum of 15 Amps at 240 Volts using single phase power. This provides various advantages, including, the apparatus 1 can use standard electricity and reduces manufacturing, installation and service costs.

To maximise the preferred embodiment's heating ability and water pressure for cleaning using this limitation on power, it is further preferred that the control means 7 includes a power control means (not shown) .

When in apparatus 1 of the preferred embodiment is first switched on, the heating means 19 is immediately switched on by the power control means to heat the cleaning fluid. The heating means ' s power rating is preferably 3,500 kW. This will draw the entire 15 Amp rating of the apparatus. The cleaning fluid thus heats up rapidly to its full operating temperature.

When articles are to be cleaned in the cleaning mode, the pump means 8 is switched on and the power control means then reduces the current to the heating means 19. This allows the pump means 8 to draw the power it needs to operate effectively, without exceeding the maximum power rating of the apparatus 1, which is preferable 15 Amps.

Thus, in the above preferred embodiment, the maximum power possible is drawn without exceeding the power rating of the apparatus. That is, when the apparatus 1 is not in the cleaning mode and in an idle mode, the heating means 19 can draw the maximum power, if required, to heat the cleaning fluid, while drawing less power when it is required cleaning.

It is preferred that in the idle mode full power is supplied to the heating means 19 by means of a TRIAC which in turn is controlled by an OPTO coupler. When the cleaning mode is commenced, an electromagnetic interlock relay is activated which causes a series resistor to be inserted into the low voltage side of the OPTO coupler which in turn reduces the current that can flow into the coupler. This in turn causes the output to be reduced and effectively reduces the drive to the TRIAC device causing the current drawn by the heating means 19 to be reduced. When the relay makes its normally open point, the circuit to the motor is enabled and this state is maintained until the cleaning cycle is completed at which time the above process is reversed. The relay is dropped off causing the series resistor to be taken out of the circuit and full power is returned to the heating means 19.

As a result, this preferred embodiment of the invention allows the limited power of single phase power to be used without exceeding the maximum rate of the power supply. By using single phase power, the preferred embodiment is cheaper to manufacture and run and is easily installed.

According to another preferred embodiment of the present invention, the fluid dispensing means further includes a second fluid dispensing means 30 which is fixed to an inner surface of the lower shell 2, as shown in Figure 1. Details of the second fluid dispensing means 30 are shown in Figure 5.

The second fluid dispensing means 30 is preferably comprised of a spout member 32 which is affixed to the inner rim of the lower shell 2. A valve 36 is preferably connected to the spout member 32 to control the flow of cleaning fluid to the spout member 32 by operating a handle 38 provided on the valve 36.

The valve 36 is preferably connected to the first hose 23 by fourth hose 37. Thus, whenever the pump means 8 is pumping cleaning fluid, the second fluid dispensing means 30 can be use to provide cleaning fluid in the upper volume 22 by turning the handle 38, whether the upper shell 3 is raised. Thus, the second fluid dispensing means can be used to clean small articles manually by holding them under the stream of cleaning fluid from the second fluid dispensing means 30. A brush may be used to assist cleaning.

In order to provide better control of the spraying of the cleaning fluid onto the articles, in another preferred embodiment of the present invention, the first fluid dispensing means 6, as shown in Figures 6a, 6b and 6c, comprises a spray head 40. The spray head 40 is preferably comprised of a plurality of elbow elements 43a, b, c connected together by tubing 41a and 42b such that the tubing 41a and 41b can pivot relative to each other.

Elbow element 43a is preferably attached to a hole 44 in the upper shell 3 such that the third hose 26 is connected to the spray head 40 and the tubing 41a is pivotally connected to the upper shell 3. Spray tubing 42 is preferably pivotally attached to elbow element 43c and is preferably provided with spray nozzles 46.

In use, the spray head 40 can be swivelled to a position to provide optimum spraying onto the articles in the basket by pivoting the spray head 40 at the elbow elements 43a, b, c.

The spray head 40 may also be held in place against the side of the upper shell 3 by a first holding clip 45, as shown in Figure 6b, or against the top of the upper shell 3 by a second holding clip 47.

In normal cleaning operation when the articles to be cleaned are relatively small and can be accommodated in the basket 4, then the spray head 40 is preferably located in the position shown in Figure 6c, that is, connected to the top of the upper shell 3. This directs the spray nozzles 46 downwards to spray the cleaning fluid on the articles in the basket 4. However, if a large article is to be cleaned, the spray head 40 is preferably moved to the position shown in Figure 6b to provide for the more effective cleaning of the articles. This directs the spray nozzles 46 to spray sideways onto the articles in the basket 4.

Throughout this specification, the words 'comprise', 'comprising' and 'comprises' will be understood to mean the inclusion of the stated integer or integers and not be construed to mean the exclusion of any other integer of integers.

Modification and variations may be made to the above preferred embodiment without departing from the invention.

Claims

1. A cleaning apparatus (1) for cleaning articles comprising: a housing means (2, 3) for, in use, holding cleaning fluid
(13) and the articles; at least one fluid dispensing means (6, 30) for, in use, dispensing the cleaning fluid onto the articles in the housing means (2, 3) ; and a purging means (23, 29) for purging the cleaning fluid from the housing means (2, 3); and a pump means (8) connected to the fluid dispensing means (6, 30) and the purging means (23, 29), wherein the pump means (8) is capable of pumping the cleaning fluid (13) to the fluid dispensing means (6, 30) when cleaning the articles and is capable of pumping the cleaning fluid to the purging means (23, 29) when purging the cleaning fluid from the housing means (2, 3) .
2. A cleaning apparatus according to claim 1 wherein the housing means (2, 3) comprises an upper shell (3) and a lower shell (2) connected to each other such that, in use, the upper shell (2) can be raised to access the inside of the housing means (2, 3) and the housing means (2, 3) is sealed when the upper shell (3) is lowered.
3. A cleaning apparatus according to claim 1 or 2 wherein the housing means (2, 3) forms upper volume (22) for holding the articles and a lower volume (21) for holding the cleaning fluid (13) .
4. A cleaning apparatus according to claim 3 wherein the at least one fluid dispensing means (6, 30) is located in the upper volume (22) such that, in use, the at least one fluid dispensing means (6, 30) is capable of spraying the cleaning fluid (13) onto the articles.
5. A cleaning apparatus according to claim 3 or 4 , wherein the purging means (23, 29) comprises a purge pipe (29) for purging the cleaning fluid (13) from the lower volume (21) .
6. A cleaning apparatus according to any one of the preceding claims wherein the pump means (8) is comprised of a single pump capable of pumping the cleaning fluid (13) to the at least one fluid dispensing means (6, 30) or to the purging means (23, 29) .
7. A cleaning apparatus according to claim 6 wherein the pump means (8) includes a valve means (24) capable of being set such that, in use, the pump means (8) pumps the cleaning fluid either to the at least one fluid dispensing means (6, 30) or to the purging means (23, 29) .
8. A cleaning apparatus according to claim 2 , or claims 3 to 7 when dependent on claim 2, wherein the at least one fluid dispensing means (6, 30) comprises: a first fluid dispensing means (6) for dispensing the cleaning fluid (13) onto the articles when the upper shell (3) is lowered; and a second fluid dispensing means (30) connected to the lower shell (2) for dispensing the cleaning fluid (13) when the upper shell (3) is raised.
9. A cleaning apparatus according to claim 9 wherein the second fluid dispensing means comprises a spout member (32) affixed to the lower shell (2) and capable of being operated manually.
10. A cleaning apparatus according to claim 8 or 9 wherein the first fluid dispensing means (6) and the second fluid dispensing means (30) are both connected to the pump means (8) such that, in use, the pump means (8) pumps the cleaning fluid to the first fluid dispensing means (6) when the upper shell (3) is lowered - i -
and to the second fluid dispensing means (30) when the upper shell (3) is raised.
11. A cleaning apparatus according to any one of the preceding claims wherein the housing means (2, 3) is substantially cylindrically shaped.
12. A cleaning apparatus according to claim 11 wherein the housing means is substantially the shape of a 200 litre (44 gallon) drum.
13. A cleaning apparatus according to any one of the preceding claims further comprising a heating means (19) for heating the cleaning fluid (13) in the housing means (2, 3) .
14. A cleaning apparatus according to claim 13 wherein the heating means (19) includes heating control means such that, in use, the heating control means reduces the power supplied to the heating means (19) when the pump means (8) is operating.
15. A cleaning apparatus according to any one of the preceding claims, further comprising at least one baffle plate (12a, 12b) , the baffles being capable of substantially separating dirt and foreign matter from the cleaning fluid (13) .
16. A cleaning apparatus according to claim 15 wherein the at least one baffle plate (12a, 12b) is attached to the upper shell (3) to raise the at least one baffle plate (12a, 12b) from the lower volume (21) when the upper shell (3) is raised.
17. A cleaning apparatus according to any one of the preceding claims, wherein the fluid dispensing means (6, 30) is comprised of a spray head (40) pivotally attached to the upper shell (3) , such that the spray head (40) is capable of pivoting between a first and a second position.
PCT/AU1998/001021 1997-12-08 1998-12-08 Article cleaning apparatus WO1999029443A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AUPP078097 1997-12-08
AUPP0780 1997-12-08

Publications (1)

Publication Number Publication Date
WO1999029443A1 true true WO1999029443A1 (en) 1999-06-17

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU1998/001021 WO1999029443A1 (en) 1997-12-08 1998-12-08 Article cleaning apparatus

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WO (1) WO1999029443A1 (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2231196A5 (en) * 1971-06-25 1974-12-20 Solv X Inc Machine component cleaning equipment - has pumping set in tank drawing from component receptacle in top of tank
US4226548A (en) * 1978-08-21 1980-10-07 Steam Stores, Inc. Parts cleaning apparatus
US4505284A (en) * 1983-03-07 1985-03-19 Hurri-Kleen Corporation Apparatus for solvent cleaning machinery parts and the like and for cleaning used solvent
US5165433A (en) * 1991-08-19 1992-11-24 Whirlpool Corporation Soil separator for a domestic dishwasher
WO1996021390A1 (en) * 1995-01-10 1996-07-18 General Electric Company A system and method for adjusting the operating cycle of a cleaning appliance

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2231196A5 (en) * 1971-06-25 1974-12-20 Solv X Inc Machine component cleaning equipment - has pumping set in tank drawing from component receptacle in top of tank
US4226548A (en) * 1978-08-21 1980-10-07 Steam Stores, Inc. Parts cleaning apparatus
US4505284A (en) * 1983-03-07 1985-03-19 Hurri-Kleen Corporation Apparatus for solvent cleaning machinery parts and the like and for cleaning used solvent
US5165433A (en) * 1991-08-19 1992-11-24 Whirlpool Corporation Soil separator for a domestic dishwasher
WO1996021390A1 (en) * 1995-01-10 1996-07-18 General Electric Company A system and method for adjusting the operating cycle of a cleaning appliance

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