IT202000022300A1 - DISHWASHER PARTICULARLY SUITABLE FOR CUPS AND GLASSES - Google Patents

Description

Description of the patent for an industrial invention entitled:

?DISHWASHING MACHINE PARTICULARLY SUITABLE FOR MUGS

AND GLASSES"

TECHNICAL FIELD OF THE INVENTION

[001] The present invention generally refers to a dishwashing machine. In particular, the invention? relating to a dishwasher preferably for cups, glasses and teaspoons for use in civil or industrial environments frequented by more? people especially during working hours.

STATE OF THE PRIOR ART

[002] Dishwashing machines have been widely known for a long time now and there are numerous models able to satisfy different needs. A specific type of these machines? that relating to the washing of cups, mugs, glasses, saucers and teaspoons especially in bars and restaurants. These machines usually include one or more? crockery collection baskets, also of various sizes, housed in a washing tank inside which one or more baskets are provided. reels for dispensing washing water.

[003] The washing cycle consists in introducing a quantity of of water coming from the water mains, its heating by means of an electric element generally positioned on the bottom of the tank, the delivery of the heated water under pressure by means of a pump which sends it to the whirlpools. After hitting the dishes, the washing water falls to the bottom of the tank where it is collected and re-emitted by the pump in the aforementioned circle. After a pre-set operating time of this cycle, the water is discharged from the machine. At this point, the tub is saturated with air heated by the aforementioned electric element to dry the dishes.

[004] Sometimes, the aforementioned cycle comprises a washing phase with detergent followed by a rinsing phase, after the washing water has been discharged.

[005] The degree of cleanliness of the dishes depends on various construction and operating factors of the machine, in addition to the use of cleaner detergents. or less effective. In any case, especially in the public sector, washing hygiene must be guaranteed to prevent the circulation of pathogenic microorganisms.

[006] In particular, in the present historical period, unfortunately characterized by the pandemic caused by the COVID-19 virus crown, the need to obtain total cleaning with a degree of sterilization of the dishes, especially in the public sector, is? essential.

[007] In addition, an aspect of great importance to always keep in mind? energy and water consumption to reduce waste as much as possible possible in the context of an ever greater attention to the request for ecological machines.

[008] At present, there are no dishwashing machines on the market that are capable of simultaneously satisfying all the aforementioned cleaning, energy and water saving and functional requirements. particularly in civil or industrial environments with pi? users. In any case, similar machines are still very bulky.

[009] In fact, in the specific case of these environments, for example workplaces in which already? there are machines for dispensing hot or cold drinks in the form of vending machines, the respective containers are generally made of plastic, so? such as stirrers for mixing drinks. AND? it is clear that these machines make extensive use of plastic materials which must be disposed of or recycled with a consequent complication of the handling and treatment procedures.

[0010] Machines specially designed to avoid the use of plastic tableware side by side or integrated in these vending machines are not known in the sector.

SUMMARY OF THE INVENTION

[0011] The technical problem underlying the present invention? therefore that of designing a dishwashing machine which satisfies all of the aforementioned requirements at the same time.

[0012] This problem? solved by a dishwashing machine comprising a series of components designed to obtain optimal washing, rinsing and drying, particularly suitable for cups, mugs and teaspoons.

[0013] A first object ? therefore a particularly compact and ecological dishwasher machine.

[0014] A second object ? a dishwasher machine that can be placed side by side or associated with a vending machine for drinks.

BRIEF DESCRIPTION OF THE FIGURES

[0015] Further characteristics and advantages of the dishwashing machine according to the present invention will become more evident from the following description of a non-limiting example with reference to the following figures in which:

- figure 1 represents an axonometric view of the machine of the invention housed in an example of cabinet;

- figure 2 is an axonometric view of the machine of figure 1 without the supporting piece of furniture;

- figure 3 represents an axonometric view of the active devices of the machine of figure 2;

figure 4 represents an exploded isometric view of a cleaning column of the machine of figure 2;

- figure 5 is an axonometric view of the assembled column of figure 4;

figure 6 represents a side view of a treatment tube housed in the column of figure 4;

figure 7 is a sectional view along the line VII-VII of the pipe of figure 6;

- figure 8 represents an axonometric view of the bottom of the column of figure 5;

- figure 9 represents a block diagram of the treatment circuit of the machine of the invention;

figure 10 is an exploded isometric view of a variant embodiment of the cleaning column of the machine of the invention;

- figure 11 represents an isometric view of the movement mechanism of the column of figure 10;

figure 12 represents an isometric view of a treatment tube associated with a heating device of the machine of the invention in accordance with a variant embodiment;

figure 13 represents a block diagram of the treatment circuit of the machine of the invention with the column of figure 10;

figure 14 is an axonometric view of a dish cleaning machine according to a variant embodiment of the invention;

- figure 15 represents an axonometric view of a portion of the machine of figure 14 from a different angle;

- figure 16 represents a block diagram of the treatment circuit of the machine of figure 14.

DETAILED DESCRIPTION OF THE INVENTION

[0016] With reference to figure 1, the reference number 1 indicates as a whole a machine for washing cups, mugs, glasses and cutlery comprising a cabinet 2 for containing the functional devices and a cleaning column 3 which emerges from the furniture top.

[0017] In general, the dishwashing machine 1 comprises (figure 2): a cleaning column 3 composed of a treatment tube 4 on which ? coaxially mounted a container 5 for the dishes equipped with a rotating support for the dishes themselves, a tank 6 for a washing and rinsing liquid connected to the bottom of said column and provided with a heating element 7, a first filtering device 8 connected by a side to said tank and on the other side to a high pressure pump 9, a second reverse osmosis filtering device 10 connected on one side to said pump 9 and on the other side to said treatment pipe 4 via two pipes, first 11 and according to 12 (figure 3), a blower 13 connected to said tube 4, in which the treatment tube comprises three longitudinal portions (figure 7), a first portion 14 which receives washing liquid coming from the first duct 11, a second portion 15 which receives rinsing liquid coming from the second duct 12 and a third portion 16 which receives air from the blower, a mechanism 17 for actuating the rotation of said support for the stoves daughters.

[0018] As shown in figures 4 and 5, the crockery container 5 ? preferably a cylinder extending along a longitudinal axis X-X, has a side wall 50, a bottom 51 and a top 52. The side wall is ? preferably transparent and equipped with a door 53 for opening/closing the container so as to access the crockery contained therein. The door can be sliding along the wall itself, or hinged in a completely conventional way. In any case, sealing gaskets will be provided to prevent the leakage of washing/rinsing liquids or hot drying air.

[0019] The interior of the container comprises a rotating support or structure 58 for supporting the crockery. The structure in turn comprises an axial housing 58A from which longitudinal walls 55 extend radially so as to divide the space of the container into a plurality of elements. of longitudinal sectors 54, and transversal disks 56 so? to be formed with the walls 55 individual treatment chambers 57. In particular, at least one of the aforementioned discs can? be provided with notches 56A suitable for being engaged by the handle of a teaspoon to be hung inside the treatment chamber.

[0020] The preferably cylindrical housing 58A creates the space for receiving the treatment tube 4 and is equipped with windows 59 to allow the liquid and air delivery nozzles to come out, as explained below. Furthermore, the housing comprises support elements 58B (figure 4) to allow the cups, small cups or glasses inside the treatment chambers 57 to be invested by the washing and rinsing water in the best possible way.

[0021] The bottom 51 of the container 5 has a central hole 51A (figure 4) which corresponds to the inlet hole of the housing 58A for inserting the treatment tube 4. Furthermore, the bottom also comprises a further hole 51B (better visible in figure 8) for discharging the washing and rinsing liquids which by gravity? fall to the bottom and pass through it into the tank 6.

[0022] Preferably, the top 52 of the container 5 comprises a central cap 52A for receiving a support pin of the treatment tube 4 and as a guide for the rotation of the rotating crockery support structure 58.

[0023] With reference to figure 6, the treatment tube 4 extends straight along a Y-Y axis from a first end? 40 at a second end? 41. Preferably, the tube has a cylindrical section and the first end? 40 is closed and possibly provided with a protruding pin 42 for engagement with the cap 52A of the container 5 of the treatment column 3. In accordance with an embodiment of the invention, the aforementioned three portions of the pipe are three sectors (figure 7) of its internal section, a first sector 14 which receives washing liquid coming from the first duct 11, a second sector 15 which receives rinsing liquid coming from the second duct 12 and a third sector 16 which receives air from the blower.

[0024] Advantageously, the wall of the tube is perforated so as to house the first 43, second 44 and third nozzles 45 (figure 6). Furthermore, each of the first 14, second 15 and third 16 sectors (figure 7) ? respectively connected to said first 43, second, 44 and third 45 nozzles.

[0025] The second end? 41 of the tube 4 comprises a first 46, a second 47 and a third 48 inlet for respectively the aforementioned first 11, second 12 outgoing duct from the second filtration device 10, and for the blower 13. Furthermore, said first 46, second 47 inlets and third 48 are respectively connected with said first 14, second 15 and third 16 sectors.

[0026] As shown in figure 8, said second end? 41 of the tube 4, once mounted in the container 5, protrudes from the hole 51A of the bottom 51 of the container itself. A ferrule 49, what ? keyed to the housing 58A of the rotating crockery support structure 58, it also protrudes from the hole 51A so as to engage with a corresponding ring nut 18 to a drive shaft (not shown) of a gearmotor 17 mounted on a support 19 fixed to the surface external to that fund.

[0027] Tank 6 ? a preferably insulated casing positioned near? of said bottom 51 of the container 5 so as to receive by gravity the washing or rinsing water which comes out of the hole 51B of the bottom itself. Furthermore, a heating medium 7, preferably in the form of an electric resistance, is placed on the bottom of the tank. In particular, the tank ? detachable from the dishwasher 1 to allow its filling and inspection. In fact, as explained below in detail, once the tank is filled, it is not ? necessary its emptying and filling thanks to a self-powered closed circuit system with consequent significant reduction in consumption. In any case, periodically the water can? be replaced and the tank washed in order to increase hygiene and consequently the efficiency of the system. A removable metal mesh or plastic coarse filter can be positioned on the discharge hole 51A of the container 5 or on the bottom of the tank 6 above its discharge hole to the duct leading to the first filtering device.

[0028] The first filtering device 8 ? preferably consisting of a cylinder containing a first portion of activated carbon and a second portion of micro-perforated mesh, inside which the water falls by micro-capillary from the tank 6. The capacity? filter can? vary according to the size of the micro-holes in both the activated carbon and the mesh; generally these vary from 1 to 5 ?m, but can also reach below 0.5 ?m.

[0029] This device ? then connected via a special duct 80 (figure 3) to the inlet of a high pressure pump 9.

[0030] The output of pump 9 ? instead connected to the second filtering device 10 by means of a suitable duct 90.

[0031] In particular, the second filtering device 10 ? a cylinder comprising a reverse osmosis membrane from which the aforesaid first 11 and second 12 exit ducts. According to the conventional operation of such a device, the so-called concentrated liquid LC, i.e. liquid which contains particles remaining in the outer jacket of the membrane, it emerges from the first radially positioned conduit 11. Axially, however, the so-called permeate liquid LP, i.e. the pure liquid that is? passed through the membrane, it comes out of the second duct 12.

[0032] The blower 13 ? a conventional fan which draws in the outside air and introduces it into the treatment tube 4 through a third duct 13A (figure 3) connected to the third inlet 48 of the tube itself.

[0033] As shown in figure 9, the block diagram represents the operation of the dishwasher machine 1 according to the present invention.

[0034] Once the tank 6 has been filled with water, the heating element 7 is activated until the water does not reach the washing temperature, preferably between 40? and 50?C. Upon reaching the established temperature, the activation of the high pressure pump 9 recalls the hot water to the first filtering device 8 where it undergoes an initial purification from the smallest particles. coarse consisting of contaminants of various nature both organic and inorganic. The water cos? The purified water flows out of the first device 8 through the duct 80 and reaches the high pressure pump 9 which forces the purified water into the second filtering device 10 through the appropriate duct 90. Under the action of the reverse osmosis, are formed two fluidic paths, a first LC path represented by residual water, or concentrate, which keeps residual particles of organic or inorganic contaminant parts in suspension which have not been retained by the first device and which have not crossed the membrane, and a second path LP represented by? ultrapure water, or permeate, which has crossed the osmotic membrane and for this? virtually free of any contaminants.

[0035] In particular, the complete crockery treatment cycle begins after opening the door 53 of the container 5 and loading the crockery into the suitable support elements 58B and 56 of a first sector 54. At this point, the machine is activated and the rotating support 58 begins to rotate under the action of the geared motor 17 to bring the dishes in correspondence with the first washing nozzles 43 which receive washing water LC from the second filtering device 10 through the first duct 11 which in turn, as explained above, connects to the first inlet 46 of the treatment tube 4. Entrance 46 ? then in single and sealed communication with the first sector 14 of the pipe itself.

[0036] The rotating support 58 continues to rotate allowing the dishes to be run over by the washing water at different angles. Subsequently, the rotation continues so as to bring the longitudinal sector 54 of the washed crockery in correspondence with the aforementioned second nozzles 44 for the delivery of the rinse water coming from the second path LP of the second filtering device 10 through the second duct 12 which connects to the second inlet 47 of tube 4 for passing the ultrapure water LP into the second septum 15 of the tube itself. In this way, the washed dishes are subjected to the rinse cycle. Also in this case the continuous rotation allows rinsing with different angles for a complete cleaning action.

[0037] Once the rinsing cycle has finished, the sector 54 containing the rinsed dishes rotates, reaching the third drying nozzles 45. In fact, at the entrance from the third inlet 48 of the tube 4, air is forced by the blower 13 which passes into the third septum 16 so to reach the third nozzles 45 and hit the dishes that will have undergone the washing cycle first and then the rinse cycle.

[0038] After a pre-set drying time, the support 58 is stopped by the gearmotor. Sector 54 of crockery will be located? at the door 53 and, therefore, avr? completed a 360 spin? what will you allow? picking up clean and dried dishes.

[0039] Although the rotation of the support is continuous, according to a variant, ? It is possible to momentarily stop the rotation to allow loading of another sector 54 of crockery which is located upstream of the one which is brought into the washing position. Given that the sectors are multiple, preferably four, this operation can be done? repeat until not all sectors have been occupied. In this way, ? is it possible to carry on simultaneously more? crockery with different treatments, automatically blocking the treatment cycles and rotation using appropriate sensors once the first crockery loaded has completed drying to allow them to be unloaded.

[0040] The treatment process according to the machine of the present invention allows a considerable saving of energy and water. Indeed, ? it should be noted that during the washing and rinsing cycle, hot water crosses two (14 and 15) of the three septa of the treatment pipe, going so? to heat also the third septum 16 where forced air from the blower 13 passes. to emerge from the third nozzles 45 sufficiently hot to operate the drying of the dishes without the need to of a specific and appropriate heating element.

[0041] In addition, both the washing and the rinsing water, after the respective treatment, falls on the bottom 51 of the container 5 and through the hole 51B reaches again the tank 6 from which the previously explained treatment cycle had begun. Consequently, ? It is evident that all the water in the tank is recycled, with a first advantage represented by the considerable water saving and, in addition, the water returns to the tank with a still high temperature, i.e. it has not undergone a drop so important that a lot of energy has to be supplied to the heating elements to return to operating temperature. In any case, isn't it? necessary to prepare powerful heating elements.

[0042] In this regard, ? it has been calculated that the energy saving due to recycling with the machine of the present invention reaches about 60% compared to traditional washing systems.

[0043] Furthermore, as explained above, the drying air does not require suitable heating, therefore with consequent energy consumption, and in any case it is effective along the entire tube. In fact, one would expect greater drying efficiency towards the top where the air has had the opportunity to travel the entire tube reaching the ideal drying temperature. In reverse, ? It has been observed that since the incoming flow rate (third inlet 48) is greater than the outgoing flow rate (third nozzles 45), a plenum effect is created, that is? a uniform distribution of the temperature created by the turbulence inside the duct.

[0044] The machine 1 just described? controlled and commanded by a unit? of command and control (not shown) connected with all the devices described above. In particular, as shown in figure 1, the machine comprises a command and control panel 20 through which ? is it possible to operate the treatment cycle as well as? set the conditions such as temperature, washing cycle times, speed? crockery holder rotation.

[0045] The car? then equipped with sensors connected to the? unit? of command and control in order to detect the states of the cycles, temperatures, water flows, any blockages of the filtering systems, the position of the sectors of the container. In particular, the counter 53 ? connected to a microswitch so that when it is opened the washing, rinsing and drying cycle is interrupted to allow the dishes to be removed.

[0046] The machine 1 of the invention, as shown for example in figure 1, can be mounted in a suitable piece of furniture 2 with the container 5 external, while all the functional devices are housed inside it. This piece of furniture can be combined with a conventional vending machine for hot or cold drinks or can? be integrated into it.

[0047] From what has been described up to now, ? it is clear that the drawbacks noted above have been overcome and, at the same time, important advantages have been achieved.

[0048] First of all, the machine of the invention does not produce plastic waste typical of vending machines for drinks, fulfilling a particularly ecological function.

[0049] Furthermore, thanks to the closed circuit with recycling of the washing and rinsing water, water consumption is considerably reduced and, at the same time, also electricity consumption, precisely in consideration of the recovery of part of the hot water temperature return to the dispensing tank and largely also with the heat exchange between the partitions in which the hot washing and rinsing water and the drying air sector.

[0050] The double filtering system operating in series advantageously makes it possible to obtain purified water for washing and ultrapure water for rinsing, so as to obtain almost total sanitisation. total number of dishes, undoubtedly greater than all conventional machine washing systems on the market.

[0051] In particular, the machine ? advantageous when used alongside or integrated with a drinks vending machine because, as explained, on the one hand it avoids the need for a vending machine. to dispose of plastic crockery and on the other hand it always offers perfectly clean crockery.

[0052] The machine, among other things, ? by itself advantageous compared to the conventional machines of bars and restaurants since? the latter are connected to the water network and, therefore, consume much more? water; they also have a traditional washing system without microfiltration and drying takes place with special heating systems. It follows that it can also be used in these places cos? such as in domestic, civil or industrial environments.

[0053] Numerous variants of the dishwashing machine according to the invention are possible by the person skilled in the art without departing from the scope of protection of the attached claims.

[0054] For example, the treatment tube can provide a portion without treatment holes so that the dishes in a sector can stop to cool after the drying cycle.

[0055] The first filtering device 8 can be equipped with a closing/opening cap (not shown) to allow periodic cleaning of the filters.

[0056] The nozzles can be orientable to obtain a washing/rinsing/drying effect oriented in different directions to achieve the most efficient treatment. uniform as possible.

[0057] The crockery supports can be hooks, grids, brackets, plates with shaped support holes or cages on which to position the individual pieces.

[0058] With reference to Figure 10, the dishwashing machine 100 according to a variant embodiment of the invention comprises a cleaning column 300 composed of a dishware container 500 equipped with a central dishware holder 510 and a tube 400 of treatment on which ? rotatably and coaxially mounted said support.

[0059] Preferably, the container ? a cylinder which extends along a longitudinal axis Z-Z, has a side wall 511, a bottom 512 and a top 513. The side wall, preferably transparent, is equipped with a door 514 (figure 14) for opening/closing the container so as to access the dishes contained therein. The door can be of the same type described above. The bottom 512 has a central hole 515 which corresponds to the inlet hole of the treatment tube 400. Furthermore, the bottom also comprises a further hole 516 for discharging the washing and rinsing liquids which by gravity? they fall to the bottom and pass through it into the tank 6 identical to the one previously described.

[0060] Preferably, the top 513 comprises a central cap 517 for receiving a support pin of the treatment tube 400 in the cylinder 500.

[0061] The central support 510 comprises a plurality of radially extending longitudinal walls 518 forming separate dishware support sectors, as explained above. Are the walls connected to each other by means of a ring 519 placed at a first end? of said walls which is located at the top 513, and by means of a ring nut 520 at a second end? at the bottom 512 of the container 500. Furthermore, support elements 521 for cutlery and support elements 522 for cups or glasses are axially mounted between the ring nut and the ring, such as those previously described. The walls 518 also have a radial portion 523 provided with a rubber profile which prevents the radial passage of water from one sector to another. Preferably, there are four walls so as to divide the internal space of the container 500 into as many four sectors.

[0062] As shown in figure 11, on the bottom 512 of the container 500 ? mounted a gearmotor 170 that ? coupled to the ring nut 520 by means of a toothed wheel 524 fitted on the shaft of said geared motor. The 520 bezel? then assembled in neutral on the treatment tube 400 by means of a sleeve 525.

[0063] The treatment tube 400, as shown in figure 12, extends along a rectilinear longitudinal axis A-A from a first end? 401 at a second end? 402. The first end? 401 is closed and possibly provided with a protruding pin 403 for engagement with the cap 517 of the container 500. The second end? 402 comprises a manifold 404 provided with a first axial inlet 405, a second radial inlet 406 and a third radial inlet 407. On the opposite side of the first axial inlet 405 of the manifold, the three axial longitudinal portions first 408, second 409 and third 410 of the treatment tube 400 extend.

[0064] In particular, these three portions are preferably cylindrical conduits suitable for transporting different treatment fluids. A central cylinder corresponds to the first portion 408 which connects to the first axial inlet 405 and ? delegated to carry hot air for drying the dishes coming from the fan 13. This cylinder ? then endowed with a plurality? of holes or nozzles 411 distributed along its wall and from which the hot drying air of the washed and rinsed dishes comes out.

[0065] At least one first peripheral cylinder corresponding to said second longitudinal portion 409 ? positioned on the circumference of the central cylinder and ? deputy to bring washing water that comes out of a plurality? of 412 nozzles distributed along its wall. Preferably, there are two cylinders, close together and with nozzles directed at different angles to perform a more thorough wash. accurate.

[0066] At least one second peripheral cylinder corresponding to said third longitudinal portion 410 ? also positioned on the circumference of the central cylinder and ? deputy to bring the? rinse water that comes out of a plurality? of 413 nozzles distributed along its wall. Preferably, there are two cylinders, close together and with nozzles directed at different angles to achieve a quicker rinse. accurate.

[0067] As explained below, obviously it will be? the rotation of the central crockery support 510 with its walls 518 to position the crockery at the treatment nozzles.

[0068] The axial inlet 405 of the collector 404 is connected with fan 13 to force hot drying air into central cylinder 408. Preferably, a heating element 130 is mounted inside the central cylinder in order to increase the temperature of the drying air when needed. In fact, as explained previously, the air is heated during its journey inside the cylinder because? ? in contact with the washing and rinsing hot water pipes. In some cases, however, a greater quantity may be required. heat, for example if there is a heavy load of crockery.

[0069] The advantage of the present embodiment lies in the fact that the maintenance and/or replacement of the single cylinders and relative nozzles is simplified.

[0070] The operation of the machine just described is substantially identical to that previously described and represented in figure 9. The only difference lies in the structure of the treatment tube which in the present embodiment? formed by a central cylinder and at least two circumferential cylinders for separating the washing, rinsing and drying fluids, while in the previous embodiment the cylinder ? unique and internally divided into three partitions.

[0071] Therefore, figure 13 represents a circuit in which the devices and elements in common with the previous embodiment are indicated with the same reference numerals. From the tank 6 the water passes through the first filtering device 8 where it undergoes a first filtering process. It then passes into the second reverse osmosis filtering device 10 via a high pressure pump 9 interposed between said two filtering devices. From the latter, the washing liquid LP emerges from a duct 12 which connects with the inlet 406 of the manifold (not shown) to reach the washing cylinders 409 and performs the washing step. The rinsing liquid LC, on the other hand, emerges from the second reverse osmosis filtering device 10 through a duct 11 to reach the inlet 407 of the manifold to reach the rinsing cylinders 410 and perform the rinsing phase.

[0072] As previously, once the washing bands have been created, the structure 510 brings the washed dishes to the nozzles 413 of the rinsing cylinders 410. Once the rinsing cycle of the first dishes is finished, the structure 510 brings the rinsed dishes to correspondence of the nozzles 411 of the central cylinder 408 to carry out the drying phase.

[0073] When the drying phase is also finished, the machine stops so as to allow the dishes to be emptied and the dirty dishes to be positioned to resume a new cycle.

[0074] As previously described, ? It is possible to predict the loading of second dirty dishes during the washing of the first dishes in the same way explained.

[0075] In accordance with a preferred embodiment of the invention, figures 14 and 15 show a dishwasher machine 110 substantially comprising all the elements and devices previously described with reference to the machine 100, which therefore have the same reference numbers , but is characterized in that it has a circuit for the washing liquid which is different from the one previously described.

[0076] In particular, the machine 110 comprises a second pump 900 connected directly to the tank 600 via a duct 901 so as to pump the liquid from the tank directly to the washing cylinders 409 via a duct 902. Furthermore, the duct 120 outgoing from the second filtering device 10, and assigned to transport the LC washing liquid, ? connected directly with said tank (figure 15) and not with the washing cylinders, as previously described. Therefore, the conduit 901 connects with the inlet 406 of the manifold 404 of the treatment tube 400 to bring LC washing water to the second portion 409 of the tube itself.

[0077] In this case, advantageously, both the high-pressure pump 9 and the second pump 900 are in operation. In this way, the tank 6 will reach? always one part LC wash water and one part LP rinse water will mix. A part of this water will come then sent directly to the second washing portion 409 of the treatment tube 400 and a part, after passing through the two filtration devices 8 and 10, to the third rinsing portion 410 of the same tube.

[0078] Therefore, apart from the first wash cycle on the first dishes loaded into the machine, the wash will made with a? washing water composed with part of the water that already has? washed dishes and with part of the water from the double filtration and part of the water from the rinsing water. On the contrary, the rinse water will come from always from double filtration with an extremely high degree of cleanliness (figure 16).

[0079] Will the crockery support (not shown) rotate? exactly as explained above, cos? such as the wash, rinse and dry cycles.

Claims (10)

Patent claims for industrial invention entitled: "DISHWASHING MACHINE PARTICULARLY SUITABLE FOR CUPS AND GLASSES" CLAIMS 1. Dishwashing machine (1;100;110) comprising a cleaning column (3;300) composed of a treatment tube (4;400) on which ? coaxially mounted a container (500) for dishes equipped with a rotating support (58;510) for the dishes themselves, a tank (6) for a washing and rinsing liquid connected to the bottom of said column and provided with a heating element ( 7), a first filtering device (8) connected on one side to said tank and on the other side to a high pressure pump (9), a second reverse osmosis filtering device (10) connected on one side to said pump ( 9) and on the other side to said treatment tube (4) via two first (11) and second (12) ducts, a blower (13) connected to said tube (4;400), wherein the treatment tube comprises three longitudinal portions, a first portion (14;409) which receives washing liquid coming from the first duct (11), a second portion (15;410) which receives rinsing liquid coming from the second duct (12;120) and a third portion (16;408) that receives air from the blower, a drive mechanism (17;170) rotation of said crockery support. 2. Dishwashing machine (1;100;110) according to claim 1, wherein said crockery container (5;500) is a cylinder extending along a longitudinal axis (X-X;Z-Z), has a sidewall (50;511), a bottom (51;512) and a top (52;513), the sidewall being transparent and provided with a door (53;514) for opening/closing the container so as to access the dishes contained therein and the bottom being provided with a central hole (51A;515) for inserting the treatment tube (4;400) and hole (51B ;516) of discharge of the washing and rinsing liquids that for gravity? they fall to the bottom of the container and pass into the tank (6). 3. Dishwashing machine (1) according to claim 1 or 2, wherein said rotating support (58) in turn comprises an axial housing (58A) from which longitudinal walls (55) extend radially so as to divide the space of the container in a plurality? of longitudinal sectors (54), and transversal disks (56) so? to form individual treatment chambers (57) with the walls (55). 4. Dishwashing machine (1) according to any one of claims 1 to 3, wherein the treatment tube (4) extends straight along an axis (Y-Y) from a first end? (40) at a second end? (41), the aforementioned three portions of the pipe being three sectors of its internal section, a first sector (14) which receives washing liquid coming from the first duct (11), a second sector (15) which receives rinsing liquid coming from second duct (12) and a third sector (16) which receives air from the blower (13). 5. Dishwashing machine (100;110) according to claim 1 or 2, wherein the rotating support (510) comprises a plurality of of radially extending longitudinal walls (518) forming separate crockery support sectors, the walls being connected to each other by means of a ring (519) located at a first end? of said walls which is located at the top (513) of the container (500) and by means of a ring nut (520) at a second end? of the walls at the bottom (512) of the container (500). 6. Dishwashing machine (100;110) according to claim 5, wherein the ring nut (520) and ring (519) are axially mounted support elements (521) for cutlery and support elements (522) for cups or glasses. 7. Dishwashing machine (100;110) according to any one of claims 1, 2, 5 and 6, wherein said treatment tube (400) extends along a rectilinear longitudinal axis (A-A) from a first end? (401) at a second end? (402), the first end? (401) is closed, the second end? (402) comprising a manifold (404) provided with a first axial inlet (405), a second radial inlet (406) and a third radial inlet (407), furthermore said longitudinal portions extend from the opposite side of the first axial inlet of the manifold axial first (408), second (409) and third (410) of the treatment tube (400). 8. Dishwashing machine (100;110) according to claim 7, wherein said three axial portions are a central cylinder (408) for transporting the hot drying air, at least a first peripheral cylinder (409) for the washing liquid and at least one second peripheral cylinder (410) for the rinsing liquid. 9. Dishwashing machine (100;110) according to any one of claims from 5 to 8, wherein said walls (518) have a radial portion (523) provided with a rubber profile which prevents the radial passage of liquids. 10. Dishwashing machine (100;110) according to any one of claims 1, 2, 5-9, further comprising a second pump (900) connected directly to the tank (600) via a pipe (901) so as to pump the liquid from the tank directly to the first portion (409) of the treatment pipe (400) by means of a conduit (902), the second conduit (120) coming out of the second filtering device (10) then being directly connected to said tank.