EP0486790A1 - Dish-washing machine with multidose dispenser of powder detergent - Google Patents
Dish-washing machine with multidose dispenser of powder detergent Download PDFInfo
- Publication number
- EP0486790A1 EP0486790A1 EP91116393A EP91116393A EP0486790A1 EP 0486790 A1 EP0486790 A1 EP 0486790A1 EP 91116393 A EP91116393 A EP 91116393A EP 91116393 A EP91116393 A EP 91116393A EP 0486790 A1 EP0486790 A1 EP 0486790A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- reservoir
- detergent
- dishwashing machine
- dispenser
- movable
- 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
Links
Images
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 dishwashing machines are prearranged to feed the washing tank with powder or liquid detergents by means of a conventional detergent dispenser connected with said tank and subdivided into various separated and independent compartments each one of them containing the respective detergent.
- the different compartments of the dispenser are filled with predetermined doses of powder or liquid detergents which are then directly or indirectly removed by the water of the washing tank.
- the dispensing devices presently employed in case of powder detergents are of the single-dose type so that the user, at every washing cycle, must fill a special tray with detergent which then, through a signal command sent by an appropriate control device (programmer) is introduced into the washing tank to be dissolved in the washing water.
- washing machines equipped with means suitable to contain large amounts of detergents, particularly liquid detergents, are well-known in the prior art.
- washing machines and dishwashing machines in which the reservoirs of liquid substances are arranged outside the machine, preferably assembled together into an appropriate container placed side by side with the machine, are well-known in the prior art.
- the height and depth of said prior art container correspond, as a rule, to those of the machine itself so to comply, at least in part, with the existing dimensional standards.
- each one of the different washing programmes prearranged by the manufacturer of dishwashing machines may normally call for different amounts of detergents, and such "to size" dosage is not obtainable with the current single-dose detergent dispensers.
- the automatic powder detergent dispenser is composed of a shell 1 screwed and gasketed into and against an opening obtained on the inner wall of the door 2 of the dishwashing machine and of a reservoir-dispenser 3 inserted into said shell 1 in such a way as to allow the user to slide it out for an easy replenishment of detergent as it will be explained later on.
- Said reservoir-dispenser removable by the user, is inserted and fixed into said shell 1 by means of a handle which has also the function of locking the reservoir-dispenser in place.
- Said reservoir-dispenser essentially shaped like an "L" as illustrated in Fig. 1, can be inserted into said shell 1 installed on the door inner wall, in such a way and position that its upper part, when the door is closed, cannot be lapped by the water, as illustrated in Fig. 8 and 9.
- This embodiment which has the advantage of limiting the area of direct exposure to the spouts of water, reduces the possibility of water seepages and maintains lower the average temperature inside the detergent dispenser thus allowing a better detergent preservation.
- the lower part of the reservoir-dispenser corresponding to the base of said "L" houses the detergent dispenser and, obviously, said part of the reservoir-dispenser, when the door is closed, is disposed in a downward direction since the detergent is fed by gravity into the washing tank.
- the removable reservoir which consists of a box-like hollow body 4, can be filled with an amount of detergent sufficient for numerous washing cycles.
- the lower part of said removable reservoir is connected with a dispenser 5 provided with a feedbox 6 which receives the detergent from the reservoir and conveys then it to a predetermined-volume container or metering chamber 7.
- a first separating element 8, placed between the reservoir feedbox 6 and said metering chamber 7, can slide transversally and hence preclude or enable the passage of the detergent in powder form into the metering chamber 7.
- the end of said metering chamber 7, positioned toward the washing tank is hermetically closed by means of a hinged movable lid 9 which, when swung closed, lies flat on a seat provided with a well-dimensioned water-tight gasket 10.
- the purpose of said gasket 10 is to preclude that spouts of water leak into the side compartments 7a of the chamber 7 thus clogging said compartments and hence impairing their function.
- Said compartments 7a collect the detergent occasionally strained out from the separating element 8 and discharge then said detergent into the washing tank when the movable lid 9 swings open.
- the coupling between the box-like hollow body 4 and the dispenser 5 can be assured by a spring-lock restrained joint 18 or by an equivalent means, capable to assure however a perfect seal.
- Said first separating element 8 consists of a movable very flat perforated lamina 11, preferably a thin chrome-nickel steel diaphragm, superimposed and sliding over the aperture 12 of the metering chamber 7, said aperture 12 and that of said movable lamina being identical and coincident so that for opening the passage between the feedbox 6 and the metering chamber 7 it is required that the movable lamina 11 slides over said aperture 12.
- a distinctive feature of the device is the special configuration of the contact zone between the sliding diaphragm and the rims of the apertures of both the feedbox 6 and metering chamber 7.
- the elastic pressure necessary for granting the required seal and elasticity to said contact parts 13 is, preferably, assured by a plurality of springs 14 acting on said parts.
- Fig. 2 and 3 show respectively an enlarged view of said contact zone and a variation to spring 14, consisting of an elastomer element 14, compressible between said movable parts 13 and said feedbox 6.
- Said elements 11 and 12 are actuated, preferably by means of a rotary motion, applied to them through corresponding shafts, cams, pins or other equivalent means 15 on which they are keyed.
- Said elements comprised in said dispenser, are out-timed in their movements so that when the detergent has to be released into the washing tank, said first separating element, normally open, closes before said movable lid opens and, conversely, after said detergent has been released, said movable lid closes before said first separating element opens.
- Said means 15, which transmit the motion to the movable perforated lamina 11 and to the movable lid 9, are driven by an actuator 16, mounted outside the shell on the inner side of the door, and they are acting on said means 15 through one or more pin-like elements 17, the latter being part of said actuator 16, as shown in Fig. 1 and 5.
- this device To fill the reservoir with detergent, the user disengages and slides, in a combined outward-upward direction, out of the housing shell 1 located on the inner wall of the door, and away from the actuator 16, the complete reservoir-dispenser unit.
- the device can be removed and placed onto a table to be filled with detergent in powder form.
- the actuator 16 When detergent has to be supplied to the dishwashing machine, the actuator 16, being powered, makes the pin 17 come out its seat thus actuating the means 15 which slide closed the separating lamina 8 and swing open the lid 9.
- the washing pump is kept in a stop motion condition in order to avoid that spouts of water can enter inside the device.
- the detergent is supplied to the washing tank every time an appropriate electrical actuator is energized by the programmer of the dishwashing machine.
- Said actuator is acting on the movable lamina as well as on the movable lid in accordance with the above described operation sequence, i. e. first, the detergent already in the metering chamber falls into the washing tank, then, the movable lid swings closed and, finally, the movable lamina slides open so to allow the replenishment of the required amount of detergent into the metering chamber.
- a further improvement of this device is obtained by providing the dispenser with a special engaging and locking handle 22.
- Said handle is rotatably mounted on that part of the dispenser facing the washing tank, the rotary motion of said handle being controlled by a counteracting spring, not shown in the drawings, said counteracting spring, when in its rest position, making said handle rest against and into an undercut provided on the dispenser housing shell, as shown in Fig. 8 and 9.
- said handle can advantageously lock in place the dispenser, once the latter is inserted into its housing shell 1, by adopting the following arrangement:
- a pin-like or plate-like shaped tongue 25 is fixed on the inner wall of the door in correspondence with a protruding element 23 of the base 24 of said handle.
- a recess 26, coincident with said tongue 25, is provided in said protruding element 23 so that, when the handle is being rotated outwardly forcing the counteracting spring action, said recess 26 disengages from said tongue 25 and when the handle is released, said recess engages with said tongue 25.
- This improvement will consist in a compensating valve installed at the top 27 of the reservoir, for instance as shown in the drawings.
- the reservoir with a special, free from moving parts flat valve, consisting of a plug 31, made of a material permeable to the air but not to the detergent, as for instance a sintered material, covering and closing permanently the inner side of the reservoir vent hole 30 so that the reservoir outer surface surrounding said vent hole 30 remains flat.
- a second hole 32 coaxial with the first one and provided with an extending outwardly regular cylindrical crown 35 inside which a finned pin 33, provided with a plurality of longitudinal channels 34 arranged between a fin and the other, is axially inserted.
- the upper end of said pin 33 is provided with a horizontally disposed closing valve 37 which can cover the rim of crown 35 and hence close said channels 34.
- a stop element 36 against which the reservoir is pressing during the insertion of the dispenser.
- valve assembly The geometry and dimensions of the valve assembly are such that when the reservoir is inserted inside its housing shell, the former, by beating with its upper wall against the pin 37, pushes the latter up thus lifting the valve and hence freeing the channels 34.
- the plug 31 due to the characteristics of the material with which it is made from, cannot be clogged and further, the surface of the reservoir resting onto the table during the detergent replenishment is regular and flat.
Abstract
Said reservoir-dispenser assembly is suitable to be removably inserted into said housing shell (1) fixed behind the inner wall of said door.
The reservoir of this reservoir-dispenser assembly contains a plurality of doses of detergent which are individually and automatically released during each washing cycle.
In this way, the dishwashing machine can operate several times in succession without the need of changing every time the required dose of detergent since said operation is performed by said dispenser which draws the detergent from said reservoir (4) in an amount suited to suffice any type of preselected washing program.
Description
- The current trend toward the use of household electrical apparatus and appliances featuring an ever-increasing number of automatisms, recently became so ample as to include the elimination of the preliminary set-up operations and, in particular, the elimination of those operations required to fill the dispenser of the concerned appliance with detergents and other substances every time the machine has to be used, by replacing them with automatically controlled operations actuated by special devices.
- At present, the dishwashing machines are prearranged to feed the washing tank with powder or liquid detergents by means of a conventional detergent dispenser connected with said tank and subdivided into various separated and independent compartments each one of them containing the respective detergent.
- In this manner, the different compartments of the dispenser are filled with predetermined doses of powder or liquid detergents which are then directly or indirectly removed by the water of the washing tank. The dispensing devices presently employed in case of powder detergents are of the single-dose type so that the user, at every washing cycle, must fill a special tray with detergent which then, through a signal command sent by an appropriate control device (programmer) is introduced into the washing tank to be dissolved in the washing water.
- These devices are rather reliable and simple in their use, but they compel the user to perform, at every washing cycle, a new filling operation.
- Further, the filling operation requires a great attention since the occurrences in which the amount of detergent is incorrect, and often excessive, are quite frequent, and obviously these erroneous amounts of detergent determine a loss of money as well as a higher pollution of the drained water.
- Furthermore, when using a dishwashing machine, it is necessary, as a rule, to open its door completely and fill the dispensers located at the inner side of the door itself so that the user is compelled to bend almost down to the floor with a considerable discomfort and also, especially in the case of aged persons, a great effort.
- Washing machines equipped with means suitable to contain large amounts of detergents, particularly liquid detergents, are well-known in the prior art.
- These prior art detergent containing means consist essentially in a plurality of high capacity rigid type containers, appropriate to hold liquid substances, connected with the washing tank through their respective conduits, the latter being provided with volumetric pumps.
Although these rigid type containers satisfactory fed with liquid detergent or liquid detergent components the washing tank of the machine, the room they take up is not however available, as a rule, inside the washing machine but must be found outside of it. - In fact, examples of washing machines and dishwashing machines in which the reservoirs of liquid substances are arranged outside the machine, preferably assembled together into an appropriate container placed side by side with the machine, are well-known in the prior art.
- The height and depth of said prior art container correspond, as a rule, to those of the machine itself so to comply, at least in part, with the existing dimensional standards.
- However, this type of embodiment has two disadvantages: first of all, it takes up an additional room which, as it is well-known, especially in the modern houses is limited, and secondly, it demands the use of detergents in liquid form which, at the present time, are still less effective and more polluting than the detergents in powder form.
- Further, each one of the different washing programmes prearranged by the manufacturer of dishwashing machines may normally call for different amounts of detergents, and such "to size" dosage is not obtainable with the current single-dose detergent dispensers.
- Therefore, it is desirable and it is an object of the present invention to provide a dishwashing machine equipped with a powder detergent reservoir which makes it possible both to accomplish several consecutive washing cycles without the need of replenishing every time the required amount of detergent and delivery, into the washing tank, in due times during the washing cycle, the single doses of detergent, being the amount of the latter differentiated in accordance with the type of the preselected washing programme.
- This object is attained by means of a simple in its design, easy-to-use, reliable and economic integrated device to be installed in a removable manner inside a dishwashing machine, being said integrated device so made as to incorporate the functions of both a multidose reservoir and a dispenser of detergent in powder form, and being said integrated device obtainable with the customary processing techniques.
- The invention will be best understood from the following description given by way of non-limiting example when read in connection with the accompanying drawings, in which:
- Fig. 1 shows schematically a detergent reservoir-dispenser device according to the invention.
- Fig. 2 and 3 show schematically two variations of a detail of said device.
- Fig. 4 and 5 show schematically two variations of a second detail of said device.
- Fig. 6 shows schematically a handle for engaging and disengaging said device.
- Fig. 7 shows schematically two views of a further detail.
- Fig. 8 illustrates the method of insertion and extraction of said device at the inner side of the door.
- Fig. 9 shows the device in its inserted and engaged position.
- Fig. 10 illustrates a typical method for filling the device with detergent in powder form.
- The automatic powder detergent dispenser is composed of a
shell 1 screwed and gasketed into and against an opening obtained on the inner wall of thedoor 2 of the dishwashing machine and of a reservoir-dispenser 3 inserted into saidshell 1 in such a way as to allow the user to slide it out for an easy replenishment of detergent as it will be explained later on. - Said reservoir-dispenser, removable by the user, is inserted and fixed into said
shell 1 by means of a handle which has also the function of locking the reservoir-dispenser in place. - Said reservoir-dispenser, essentially shaped like an "L" as illustrated in Fig. 1, can be inserted into said
shell 1 installed on the door inner wall, in such a way and position that its upper part, when the door is closed, cannot be lapped by the water, as illustrated in Fig. 8 and 9. - This embodiment, which has the advantage of limiting the area of direct exposure to the spouts of water, reduces the possibility of water seepages and maintains lower the average temperature inside the detergent dispenser thus allowing a better detergent preservation.
- The lower part of the reservoir-dispenser, corresponding to the base of said "L", houses the detergent dispenser and, obviously, said part of the reservoir-dispenser, when the door is closed, is disposed in a downward direction since the detergent is fed by gravity into the washing tank.
- The removable reservoir, which consists of a box-like
hollow body 4, can be filled with an amount of detergent sufficient for numerous washing cycles.
The lower part of said removable reservoir is connected with adispenser 5 provided with afeedbox 6 which receives the detergent from the reservoir and conveys then it to a predetermined-volume container ormetering chamber 7. - A first separating
element 8, placed between thereservoir feedbox 6 and saidmetering chamber 7, can slide transversally and hence preclude or enable the passage of the detergent in powder form into themetering chamber 7. - The end of said
metering chamber 7, positioned toward the washing tank is hermetically closed by means of a hingedmovable lid 9 which, when swung closed, lies flat on a seat provided with a well-dimensioned water-tight gasket 10. - The purpose of said
gasket 10 is to preclude that spouts of water leak into the side compartments 7a of thechamber 7 thus clogging said compartments and hence impairing their function. - Said compartments 7a, as shown in Fig. 1, collect the detergent occasionally strained out from the separating
element 8 and discharge then said detergent into the washing tank when themovable lid 9 swings open. - The coupling between the box-like
hollow body 4 and thedispenser 5 can be assured by a spring-lock restrained joint 18 or by an equivalent means, capable to assure however a perfect seal. - Said first separating
element 8 consists of a movable very flat perforatedlamina 11, preferably a thin chrome-nickel steel diaphragm, superimposed and sliding over theaperture 12 of themetering chamber 7, saidaperture 12 and that of said movable lamina being identical and coincident so that for opening the passage between thefeedbox 6 and themetering chamber 7 it is required that themovable lamina 11 slides over saidaperture 12. - A distinctive feature of the device is the special configuration of the contact zone between the sliding diaphragm and the rims of the apertures of both the
feedbox 6 andmetering chamber 7. - In fact, the hermetic peripheral closing contact of said movable perforated lamina in correspondence with the rims of the apertures of both the feedbox and metering chamber is assured by a perimetrical knife-
edge contact 13 which closes perpendicularly and elastically between the inlet lip of themetering chamber 7 and a lip, elastically fixed at the outlet of thefeedbox 6 so as to assure between them an uninterrupted and uniform contact suited to preclude the passage of detergent. - The elastic pressure necessary for granting the required seal and elasticity to said
contact parts 13 is, preferably, assured by a plurality ofsprings 14 acting on said parts. - Fig. 2 and 3 show respectively an enlarged view of said contact zone and a variation to
spring 14, consisting of anelastomer element 14, compressible between saidmovable parts 13 and saidfeedbox 6. - To drive the movement of the
movable lamina 11 andmovable lid 9, it would be simple and easy to have recourse to the available techniques usually employed for the actuation of mechanical elements which are well-known to anyone skilled in art. - A preferred embodiment of a driving mechanism is described hereinafter:
Saidelements - Said elements, comprised in said dispenser, are out-timed in their movements so that when the detergent has to be released into the washing tank, said first separating element, normally open, closes before said movable lid opens and, conversely, after said detergent has been released, said movable lid closes before said first separating element opens.
- Said means 15, which transmit the motion to the movable perforated
lamina 11 and to themovable lid 9, are driven by anactuator 16, mounted outside the shell on the inner side of the door, and they are acting on saidmeans 15 through one or more pin-like elements 17, the latter being part of saidactuator 16, as shown in Fig. 1 and 5. - It is evident that the device will operate properly when, with the actuator in a stop motion condition, said
element 17 will be set inwardly inside the shell and will engage with saidmeans 15 through appropriate openings obtained on the wall of theshell 1. - The operation of this device is the following:
To fill the reservoir with detergent, the user disengages and slides, in a combined outward-upward direction, out of thehousing shell 1 located on the inner wall of the door, and away from theactuator 16, the complete reservoir-dispenser unit. - In this way, the device can be removed and placed onto a table to be filled with detergent in powder form.
- To replenish the detergent, it is sufficient to disengage the locking and sealing means 18, disjoin the reservoir from the
dispenser 5 and fill then the reservoir with detergent. After this filling operation, the reservoir will be joined again with the dispenser and the device is then re-inserted into its housing shell inside the dishwashing machine. - When detergent has to be supplied to the dishwashing machine, the
actuator 16, being powered, makes thepin 17 come out its seat thus actuating themeans 15 which slide closed the separatinglamina 8 and swing open thelid 9. - The operation sequence takes place as follows:
- Sliding closed of
diaphragm 8 and hence closing of the passage of detergent in powder form into themetering chamber 7; - Swinging open of
lid 9 and hence falling of the detergent into the washing tank; - Swinging closed of
lid 9; - Sliding open, in a rest position, of
diaphragm 8 and hence refilling of the detergent dose thus allowing the replenishment of detergent in themetering chamber 7. - During the above described operation sequence, the washing pump is kept in a stop motion condition in order to avoid that spouts of water can enter inside the device. The detergent is supplied to the washing tank every time an appropriate electrical actuator is energized by the programmer of the dishwashing machine.
- Said actuator is acting on the movable lamina as well as on the movable lid in accordance with the above described operation sequence, i. e. first, the detergent already in the metering chamber falls into the washing tank, then, the movable lid swings closed and, finally, the movable lamina slides open so to allow the replenishment of the required amount of detergent into the metering chamber.
- An useful improvement of this device is obtained if, as shown in the drawings, said
movable lid 9 is arranged remarkably slanting with respect to the longitudinal axis of themetering chamber 7. In fact, with this arrangement it is possible to swing open the movable lid by means of a minimum rotation of theshaft 15 on which the movable lid is keyed thus simplifying the driving mechanism. - As a matter of fact, if said
lid 9 were arranged perpendicularly with respect to the longitudinal axis of themetering chamber 7, in order to swing open said movable lid it would be necessary to make it rotate a complete right angle, which is a more complex operation than that performable by the use of the above described improvement. - It is evident that it is possible to adjust the amount of detergent to be supplied into the washing tank at every washing cycle, simply performing said operation so many times as required by means of proper control commands sent to the actuator by the programmer.
- A further improvement of this device is obtained by providing the dispenser with a special engaging and locking
handle 22.
Said handle is rotatably mounted on that part of the dispenser facing the washing tank, the rotary motion of said handle being controlled by a counteracting spring, not shown in the drawings, said counteracting spring, when in its rest position, making said handle rest against and into an undercut provided on the dispenser housing shell, as shown in Fig. 8 and 9. - Also, said handle can advantageously lock in place the dispenser, once the latter is inserted into its
housing shell 1, by adopting the following arrangement:
A pin-like or plate-likeshaped tongue 25 is fixed on the inner wall of the door in correspondence with a protrudingelement 23 of thebase 24 of said handle. A recess 26, coincident with saidtongue 25, is provided in said protrudingelement 23 so that, when the handle is being rotated outwardly forcing the counteracting spring action, said recess 26 disengages from saidtongue 25 and when the handle is released, said recess engages with saidtongue 25. - The operation of this handle will appear clear from the following description:
To set in place the device, the user first insert the dispenser completely into thehousing shell 1 utilizing saidhandle 22. The handle, being now released, due to the action of the counteracting spring is moved to rest against the dispenser housing shell surface while thetongue 25 is being inserted into the recess 26 thus locking in place the dispenser. - Conversely, to slide the dispenser out its housing shell, the user will proceed by following the reverse operation sequence which is not here described for the sake of brevity.
- However, to obtain a perfect operation of the device it is necessary to adopt a further improvement. In fact, due to both the progressive emptying of the
reservoir 4 and the effect of the rapid cooling of the dispenser wall facing the washing tank during the pre-washing cycles as well as to the cold water circulation, a vacuum may occur inside thereservoir 4 which could impair the regular and accurate filling of themetering chamber 7. - To counter an inconvenience of this type, a further improvement of the device should be adopted.
This improvement will consist in a compensating valve installed at the top 27 of the reservoir, for instance as shown in the drawings. - The use of a conventional valve consisting of a movable stem applied and passing through said reservoir top and beating against the corresponding upper wall of the
housing shell 1, said valve closing and opening suitable holes made on said top in the nearest proximity of said stem, creates however the inconvenience that when the reservoir has to be filled with detergent, said reservoir, as a rule, is placed to rest onto a table so that said reservoir actuates the opening of said valve with the consequence that the valve gets immediately clogged with detergent so losing its efficiency and damaging the table surface as well. - To avoid said inconveniences, it is suggested to provide the reservoir with a special, free from moving parts flat valve, consisting of a plug 31, made of a material permeable to the air but not to the detergent, as for instance a sintered material, covering and closing permanently the inner side of the
reservoir vent hole 30 so that the reservoir outer surface surrounding saidvent hole 30 remains flat. - The corresponding zone of the surface of the
shell 1 is slightly hollowed outwardly and in this shallow recessing it is obtained asecond hole 32, coaxial with the first one and provided with an extending outwardly regularcylindrical crown 35 inside which afinned pin 33, provided with a plurality oflongitudinal channels 34 arranged between a fin and the other, is axially inserted. - The upper end of said
pin 33 is provided with a horizontally disposed closingvalve 37 which can cover the rim ofcrown 35 and hence close saidchannels 34. Inside the shell, the lower end of said pin is provided with astop element 36 against which the reservoir is pressing during the insertion of the dispenser. - The geometry and dimensions of the valve assembly are such that when the reservoir is inserted inside its housing shell, the former, by beating with its upper wall against the
pin 37, pushes the latter up thus lifting the valve and hence freeing thechannels 34. - In short, when the device is inserted into its housing shell, an air passage is automatically opened between the exterior and the interior of the reservoir via said
channels 34, shallow recessing on the shell, venthole 30 and plug 31, the latter allowing the inflow of air without being however clogged due to its characteristics. - When the reservoir is being filled with detergent, the plug 31, due to the characteristics of the material with which it is made from, cannot be clogged and further, the surface of the reservoir resting onto the table during the detergent replenishment is regular and flat.
- To avoid that humidity and heat coming from the washing tank could possibly enter inside the
reservoir 4 by passing through theinterface 39 existing between said reservoir and the inner wall of thehousing shell 1 and then through thevent hole 30, it is advisable to seal said passage by means of an appropriate, resilientlip type gasket 38, tapered toward the shell, as shown on the drawing by dottedline 40, and enclosing thestop element 36, so that when the dispenser is inserted into the shell, thebottom wall 37 of the former, by pushing against thestop element 36, causes the contact and hence the closing of saidgasket 38 against the said shallow recessing thus inhibiting the passage between theinterface 39 and the inside of the reservoir.
Claims (14)
- A dishwashing machine, particularly a domestic dishwashing machine, comprising a washing tank, a door (2) to load and close said washing tank, an housing shell (1) obtained on the inner wall of said door and a reservoir-dispenser assembly (3) containing detergent in powder form, characterized in that said reservoir-dispenser (3) consists of a detergent reservoir (4) and a dispenser (5), the latter, detachable from the former, being capable of releasing a single dose of detergent at a time and containing an amount of detergent sufficient for a plurality of washing cycles, said reservoir-dispenser assembly (3) being removably inserted into said housing shell (1) fixed behind the inner wall of said door (2), and being positioned in such a way, that when said door (2) is closed, said reservoir-dispenser assembly (3) is disposed with the reservoir (4) facing upward so that the detergent releasing mouth of the dispenser (5) is facing downward.
- A dishwashing machine according to claim 1, characterized in that the dose of detergent required during said washing cycles, is drawn from said reservoir (4) through said dispenser (5).
- A dishwashing machine according to claim 2, characterized in that the bottom of said reservoir (4) communicates with a metering chamber (7) of said dispenser (5) through a feedbox (6) and a first movable separating element (8) introducible between said feedbox and said metering chamber.
- A dishwashing machine according to claim 3, characterized in that said metering chamber (7) leads directly to said washing tank through a movable lid (9) located on the bottom of said metering chamber, said movable lid being normally closed.
- A dishwashing machine according to claim 4, characterized in that said movable lid (9), when in its normally closed position and with the door closed, is remarkably slanting with respect to the longitudinal axis of the metering chamber (7).
- A dishwashing machine according to claims 3, 4 or 5, characterized in that said first separating element (8), when the detergent has to be released from the metering chamber (7) to the washing tank, closes before said movable lid (9) opens and conversely, after the detergent is released, said movable lid (9) closes before said first separating element opens.
- A dishwashing machine according to claim 6, characterized in that said first separating element (8) and said movable lid (9) rotate on their respective shafts or pins (15), said shafts or pins being driven by one or more actuating elements (16, 17) located inside said door.
- A dishwashing machine according to any one of claims from 3 to 7, characterized in that said first separating element (8) consists of a movable, preferably very thin perforated lamina (11), superimposed and capable of sliding across the aperture (12) of the metering chamber (7) and located at the bottom of the feedbox so as to close the latter, said aperture and that of said movable lamina being identical so that for opening the first separating element it is required that said movable perforated lamina (11) slides across said aperture (12).
- A dishwashing machine according to claim 8, characterized in that the hermetic peripheral closing contact of said movable perforated lamina is assured by a movable wall (13) closing elastically against the nonperforated surface of said movable lamina (11).
- A dishwashing machine according to any one of the preceding claims, characterized in that said movable lid (9), closing said metering chamber, closes hermetically by means of appropriate gaskets (10) also the downward directed side compartments (7a) and encloses said movable perforated lamina (11) and said movable wall (13).
- A dishwashing machine according to any one of the preceding claims, characterized in that the reservoir-dispenser assembly (3) is provided with a handle (22) which can be opened by swinging it toward the washing tank and can be closed by letting it swing automatically back to its closed position, said handle being provided with a recess (26) suitable to get engaged, when said handle has to be closed, with a tongue (25) fixed on the inner wall of the door and to get disengaged from said tongue when said handle has to be opened.
- A dishwashing machine according to any one of the preceding claims, characterized in that the upper part of the reservoir (4) includes an air inflow valve, said valve being automatically opened when the reservoir-dispenser assembly (3) is inserted into the housing shell (1).
- A dishwashing machine according to claim 12, characterized in that said valve consists, inside the reservoir (4), of a vent hole (30) obtained on the upper wall of said reservoir and of a plug (31) which covers and closes from the inside said vent hole (30), said plug being made of a material permeable to the air and not to the detergent, as for instance a sintered material, and of an outward shallow recessing obtained on the housing shell (1) in front of said vent hole (30), said shallow recessing being provided with a second hole (32) substantially coaxial with the fist one and provided with an extending outwardly regular cylindrical crown (35) inside which a finned pin (33), provided with a plurality of longitudinal channels (34) arranged between a fin (33a) and the other, is axially inserted, the upper end of said pin (33) being provided with a horizontally disposed closing valve (37) which can cover the rim of the crown (35) and hence close said channels (34), and the valve end inside the housing shell being provided with a stop element (36) against which the reservoir is pressing during the insertion of the dispenser.
- A dishwashing machine according to claim 13, characterized in that a gasket (38) is interposed between the external perimeter of said vent hole (30) and the inner part of said shallow recessing of the housing shell (1), said gasket being capable of closing the passage from the interface (39) of the housing shell (1) to the vent hole (30) and hence to the inside of the reservoir (4).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT4575890 | 1990-10-03 | ||
IT04575890A IT1242800B (en) | 1990-10-03 | 1990-10-03 | DISHWASHER WITH MULTI-DOSE DISPENSER OF POWDER DETERGENT |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0486790A1 true EP0486790A1 (en) | 1992-05-27 |
EP0486790B1 EP0486790B1 (en) | 1994-07-27 |
Family
ID=11258099
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP91116393A Expired - Lifetime EP0486790B1 (en) | 1990-10-03 | 1991-09-26 | Dish-washing machine with multidose dispenser of powder detergent |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0486790B1 (en) |
DE (1) | DE69103127T2 (en) |
ES (1) | ES2061142T3 (en) |
IT (1) | IT1242800B (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107847101A (en) * | 2015-08-31 | 2018-03-27 | 伊莱克斯电器股份公司 | Detergent throwing device for dish-washing machine |
EP3305160A1 (en) * | 2016-10-06 | 2018-04-11 | Miele & Cie. KG | Storage container for assembly in a metering device of a cleaning device |
CN109363604A (en) * | 2018-11-30 | 2019-02-22 | 广东赛普电器制造有限公司 | A kind of powder liquid exports non-interference dishwashing machine dispenser |
CN110403554A (en) * | 2018-04-27 | 2019-11-05 | 三花亚威科电器设备(芜湖)有限公司 | Distributor and dish-washing machine |
US10646099B2 (en) | 2016-10-06 | 2020-05-12 | Miele & Cie. Kg | Dispensing device |
IT202000013435A1 (en) * | 2020-06-05 | 2021-12-05 | Eltek Spa | WASHING AGENTS DISPENSER FOR DISHWASHERS |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7083071B1 (en) | 2000-06-08 | 2006-08-01 | Beverage Works, Inc. | Drink supply canister for beverage dispensing apparatus |
US7754025B1 (en) | 2000-06-08 | 2010-07-13 | Beverage Works, Inc. | Dishwasher having a door supply housing which holds dish washing supply for multiple wash cycles |
DE102014111315A1 (en) * | 2014-08-08 | 2016-02-11 | Miele & Cie. Kg | Dishwasher, in particular household dishwasher |
DE102016116417A1 (en) | 2016-09-02 | 2018-03-08 | Miele & Cie. Kg | Dishwasher, in particular household dishwasher |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1239822B (en) * | 1962-09-14 | 1967-05-03 | Bauknecht Gmbh G | Container that can be placed in a dishwasher for introducing solid, powdery or liquid detergent |
DE3833961A1 (en) * | 1988-10-06 | 1990-04-12 | Licentia Gmbh | Dishwashing machine with an addition chamber for cleaning agent |
DE3903636A1 (en) * | 1989-02-08 | 1990-08-09 | Miele & Cie | Dishwasher with an automatic metering device for liquid detergent |
-
1990
- 1990-10-03 IT IT04575890A patent/IT1242800B/en active IP Right Grant
-
1991
- 1991-09-26 DE DE69103127T patent/DE69103127T2/en not_active Expired - Fee Related
- 1991-09-26 ES ES91116393T patent/ES2061142T3/en not_active Expired - Lifetime
- 1991-09-26 EP EP91116393A patent/EP0486790B1/en not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1239822B (en) * | 1962-09-14 | 1967-05-03 | Bauknecht Gmbh G | Container that can be placed in a dishwasher for introducing solid, powdery or liquid detergent |
DE3833961A1 (en) * | 1988-10-06 | 1990-04-12 | Licentia Gmbh | Dishwashing machine with an addition chamber for cleaning agent |
DE3903636A1 (en) * | 1989-02-08 | 1990-08-09 | Miele & Cie | Dishwasher with an automatic metering device for liquid detergent |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107847101A (en) * | 2015-08-31 | 2018-03-27 | 伊莱克斯电器股份公司 | Detergent throwing device for dish-washing machine |
EP3305160A1 (en) * | 2016-10-06 | 2018-04-11 | Miele & Cie. KG | Storage container for assembly in a metering device of a cleaning device |
US10646099B2 (en) | 2016-10-06 | 2020-05-12 | Miele & Cie. Kg | Dispensing device |
CN110403554A (en) * | 2018-04-27 | 2019-11-05 | 三花亚威科电器设备(芜湖)有限公司 | Distributor and dish-washing machine |
CN109363604A (en) * | 2018-11-30 | 2019-02-22 | 广东赛普电器制造有限公司 | A kind of powder liquid exports non-interference dishwashing machine dispenser |
CN109363604B (en) * | 2018-11-30 | 2024-02-20 | 广东赛普智能制造股份有限公司 | Dish-washing machine distributor with mutually noninterfere powder-liquid output |
IT202000013435A1 (en) * | 2020-06-05 | 2021-12-05 | Eltek Spa | WASHING AGENTS DISPENSER FOR DISHWASHERS |
WO2021245613A1 (en) * | 2020-06-05 | 2021-12-09 | Eltek S.P.A. | Washing agent dispenser for dishwashing machines |
Also Published As
Publication number | Publication date |
---|---|
DE69103127D1 (en) | 1994-09-01 |
EP0486790B1 (en) | 1994-07-27 |
IT1242800B (en) | 1994-05-18 |
ES2061142T3 (en) | 1994-12-01 |
IT9045758A0 (en) | 1990-10-03 |
DE69103127T2 (en) | 1995-03-02 |
IT9045758A1 (en) | 1992-04-03 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US5261432A (en) | Dishwashing machine with multidose dispenser of powder detergent | |
US2952202A (en) | Apparatus for making coffee | |
US4748901A (en) | Coffeemaker | |
EP0486790B1 (en) | Dish-washing machine with multidose dispenser of powder detergent | |
US4555984A (en) | Coffee maker | |
EP1379156B1 (en) | Washing agents dispenser device for a dishwashing machine | |
EP0691101B1 (en) | Powdered and liquid detergent and additive detergent integrated dispenser for wasching machines, in particular household dish-washing machines | |
US3011426A (en) | Vending machines for dispensing freshly brewed beverages | |
JPH0722551B2 (en) | Coffee machine | |
JPH02189113A (en) | Household type of automatic machine for making filtrate of espresso or german coffee | |
US5197372A (en) | Device for the preparation of hot beverages by extraction | |
CN115811952A (en) | Cooking apparatus | |
JPS6343698A (en) | Washing machine | |
US5161559A (en) | Cleaning device for contact lenses | |
US3229612A (en) | Rotary head coffee infusor | |
US3941042A (en) | Automatic coffee brewing system | |
US3088826A (en) | Method for making coffee | |
US3749288A (en) | Liquid dispenser | |
GB2147613A (en) | Dispensing arrangement | |
EP0146180B1 (en) | Refrigerator door with drink dispenser | |
CN215441089U (en) | Detergent distributor box, detergent putting component and washing equipment | |
CN214128322U (en) | Cooking utensil | |
US3085494A (en) | Infusion type coffee maker | |
KR102072808B1 (en) | Duch coffee making apparatus | |
CN220571996U (en) | Powder processing structure and beverage preparation machine |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): DE ES FR GB SE |
|
17P | Request for examination filed |
Effective date: 19920622 |
|
17Q | First examination report despatched |
Effective date: 19930915 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): DE ES FR GB SE |
|
REF | Corresponds to: |
Ref document number: 69103127 Country of ref document: DE Date of ref document: 19940901 |
|
ET | Fr: translation filed | ||
REG | Reference to a national code |
Ref country code: ES Ref legal event code: FG2A Ref document number: 2061142 Country of ref document: ES Kind code of ref document: T3 |
|
EAL | Se: european patent in force in sweden |
Ref document number: 91116393.9 |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed | ||
REG | Reference to a national code |
Ref country code: GB Ref legal event code: IF02 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20020812 Year of fee payment: 12 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20020815 Year of fee payment: 12 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: SE Payment date: 20020821 Year of fee payment: 12 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20020822 Year of fee payment: 12 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: ES Payment date: 20020909 Year of fee payment: 12 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20030926 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20030927 Ref country code: ES Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20030927 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20040401 |
|
EUG | Se: european patent has lapsed | ||
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20030926 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20040528 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST |
|
REG | Reference to a national code |
Ref country code: ES Ref legal event code: FD2A Effective date: 20030927 |