DE2410765A1 - SMALL MACHINE FOR WASHING DISHES - Google Patents

Description

"Small machine for washing dishes."

The present invention is essentially a dish washing machine with small dimensions as an object, the essentials of which Parts are made of plastic and can, for example, easily be hung in cupboard elements such as those used in kitchens, for example. can be installed.

For several years, dishwashing machines have received constant attention from manufacturers, since the market for this type of device has developed very quickly. It can be said that dish washing machines are currently among the Basic appliances of a modern kitchen belong.

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The dishwashing machines previously offered on the market work satisfactorily and essentially according to the same Principle which consists in sucking in heated water, if necessary, in order to send it into the injection arms or swivel arms, which the water in the manner of a shower in the machine up and down on the dishes to be washed

splash. The water used or the washing-up water is then drawn off after passing through a suitable filter.

The machines offered so far, however, take up a relatively large space, are heavy and bulky and consequently have require a certain amount of space for their installation, and require special devices and measures, depending on the Machine type, for supplying and discharging the water .Femer granules these machines wash a certain amount of dishes, but remain relatively expensive for the buyer. With in other words, there are no small dishwashers that wash a small amount of dishes very quickly and easily, and that immediately and without any special effort can be placed anywhere in a room, such as even a very small kitchen.

The present invention fills this void and proposes a small dish washing machine, all of the foregoing listed conditions and can be purchased at a very modest price, thanks in particular to the fact that all essential parts that the invention Form machine, made of plastic, which is possible because of the small size of the machine. In addition, one can with such a machine a small amount of dishes in a very short period of time, on the order of nine minutes to wash. This was with the large machines that were previously used and required a significantly longer washing period, not possible. Since the washing time of the machine according to the invention is extremely short, it is absolutely from now on possible to wash the items that you want to wash for

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at the desired time or even to do a series of washes in succession. In addition to the already mentioned advantages, the different parts that make up the machine are made extremely simple, so that they can be disassembled the machine and its maintenance can be carried out by anyone, and one can always be sure that after reassembly, the machine ensures a very effective washing.

The present invention thus enables the foregoing and to realize other advantages by proposing a small dish washing machine that has a sink or Has trough-like housing that can be fed with water and provided in the bottom of the pump means for this water are to be injected into the upper area of the tub that contains the dishes to be washed, this small Machine is characterized in that the pumping means are formed by a small turbine-like impeller that enclosed by a pump housing resting on the bottom of the tub, from the one located in the bottom area of the tub Is flushed with water and rotated by a shaft connected to a motor in the upper area of said tub, said pump body having two channels symmetrical to the axis of the turbine in order to achieve the symmetrical flow of the water sucked in from the turbine to the two rotary sprinklers, each placed at the end of each channel are and in this way a regular and balanced rotation of the drive shaft of the machine with minimal wear to obtain.

It can be seen that the symmetry of the channels with respect to the turbine axis in the pump body is mainly due to this the reason is that an electric drive motor is used, which is located in the upper area of the tub and the aforementioned Turbine drives with the help of a shaft that has a certain length and of course only when rotating may have minimal wear and tear. Thanks to the present

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Invention, this goal is achieved because the drive shaft is not due to torsional stresses or other types of stress is subject to the symmetry of the flow paths of the water in the pump body.

It should also be noted that the machine according to the invention has a pair of rotating detonators which only supply water spray upwards and that the pump body is to some extent sunk into the bottom of the tub of the machine and at the same time rests against this floor, as will be shown later.

According to another feature of the invention, the pump body is formed by two plates of molded plastic, namely a first plate, which od on the bottom of the tub with the help of humps. Like. Rests and an impression or has a recess for receiving the turbine and from which the two named channels extend in the shape of a circular arc, and a second lid for this recess forming plate.

According to a further feature of the invention, the The drive shaft of the machine is surrounded by a protective sleeve that holds the pump body, which rests on the bottom of the tub is held.

According to a further feature of the invention, said pump body and a filter-forming housing are in a drop used in the bottom wall of the tub.

This housing can advantageously be removed and is consequently at rest on the bottom of the tub, is inserted between the pump body and the front wall of the tub and has a space for Incorporation of the emptying means for the waste water.

According to a further feature of the invention, said emptying means consist of an axially movable pipe

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butt in its lower position serves as an overflow and releases an emptying opening in its upper position.

It should be noted that in one embodiment of the Invention, the axial movement of the pipe stub is carried out from outside the machine with the help of an eccentric control, which penetrates one of the stump fixed pliers and has in this game. In a preferred embodiment, the Pipe stump controlled by a small rod that is hinged to this and from outside the machine via a system is operated with a lockable button or plunger.

According to another feature of the invention, the The filter-forming housing has a protuberance that works with other protuberances fixed to the tub to form the pipe stump to guide his movements.

It should also be noted that the said filter-forming housing has a small sieve or the like in the form of a V.

contains that of part of the housing, with the said The hump to guide the pipe stump is held and spanned by a cap. This case with a filter furthermore has openings in its side walls for the water to flow through.

According to another feature of the invention, a hollow float-forming element is hinged to the pump body and controls a rod that lies outside the tub and with a switch to start the motor at an appropriate Level of water in the bottom of the tub is connected.

Another feature of the invention is that in the upper area of the tub there is a space for receiving an impeller is designed to cool the engine and is connected to a passage for evacuating the air to the outside.

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According to the invention, the emptying means mentioned are namely the pipe stump, automatically by an electromagnet controlled, which actuates a rod which is arranged outside the tub and is connected to said stump.

It can be seen that, thanks to the above measures, the machine according to the invention is operated automatically in a threader manner can be, i.e. that the washing-rinsing cycle takes place without special intervention.

It should also be noted that the front wall of the machine is formed by two lockable doors that extend upwards and open at the bottom and is hinged to the tub by a thin layer of the tub material. The two doors can open at the same time thanks to a system of articulated arms.

It should also be noted that the machine according to the invention does not require any seals, since the arm of the lower door advantageously has an edge thanks to which the water sprayed on the inside of this door drains into the tub can.

The machine according to the invention also has nozzle supports on each side of the tub so that said water is preferred can fall in the form of a rain into the tub in order to effect a pre-rinse of the dishes to be washed.

The invention is described in more detail below with reference to the accompanying drawings. The following applies to the latter:

Figures -1 and 2 are front and side perspective views and each show the machine according to the invention with the doors closed and open;

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Fig. 3 is a rear perspective view of the machine (Ventilation grille is lifted);

Fig. 4 is a perspective view, partially broken away, showing various parts of the machine of the present invention ;

Figure 5 is an exploded perspective view of the pumping means of the machine;

Fig. 6 shows a section taken substantially along the Line VI-VI of Figure 4 is guided;

7 is an enlarged, partially sectioned view of a preferred embodiment of the control of the emptying means, namely a system with lockable buttons or Plungers for actuating the bung-forming pipe stub, wherein the latter is in its low position, i.e. in the closed position;

Fig. 8 is identical to Fig. 7, but shows the open bunghole, i.e. the released orifice;

Fig. 9 is a rear view of the system with lockable buttons in the direction of arrow IX of Figs

Fig. 10 is a partial exploded and perspective view of a rotary sprinkler on which according to the invention a ring is attached.

In one embodiment, which is shown in particular in FIGS. 1 to 4, it can be seen that a small dishwasher according to the invention of one essentially parallelepiped housing formed in the shape of a trough is that a bottom wall 1, a rear wall 2, two side walls 3 and a top wall 4 and of two lockable Doors 5 is closed with the housing of the

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Machine in the manner shown in FIG. 5a in FIGS. 2, 7, 8 articulated by thinning the wall. The doors 5 open simultaneously upwards and downwards thanks to the Arms 102 and 103 as shown in Fig. 2 ^ 10 are directed.

One of the articulated arms 103 preferably pivots about a cam 105 as the axis of rotation on the inside of the Side walls 3 of the housing of the machine is provided.

According to the invention, the locking of the Doors ensured by two buttons 106 (Fig. 1), which press together (shown in Fig. 1 by the arrows F) or release rods 107 (Fig. 2) operated, which are under the action of a spring (not shown).

When locking, i.e. releasing the buttons 106, the ends of the rods 107 are in respective ones Openings (not shown) in the side walls 3 of the machine housing.

The housing just described consists entirely of plastic, such as polypropylene, and rests on three feet 8. Of course, such a housing can have any suitable means to be attached to a board or wall Help e.g. to be attached to an angled tab. It can be seen that the lower part of the case is the one just described was, continues in a protective cover 9, which is also made of plastic.

Connection piece 10 (Fig. 1 and 4) for the input of water into the machine with the help of a flexible pipe, for example, are provided on each side of the housing. Of course one of these connection nozzles, depending on whether the water supply is seen from the right or left of the machine follows, connected. It should be mentioned that there is also a water supply in the upper area of the machine.

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can be seen without departing from the scope of the invention, so that the dishes to be washed are sprayed and in this way is pre-washed. Likewise known means such as automatic inlet valves and interrupter valves for the Water can be placed between the machine and the pressurized water source without affecting the frame of the Invention is exceeded.

As can be seen particularly clearly from FIG. 4, has the bottom wall 1 of the tub-shaped housing has a slight incline so that the water reaches the center of the tub. These Bottom wall 1 also has a step 11 in the middle, in the side by side water pumping means 12 and a filter-forming housing 13 are used.

As can be clearly seen from FIG. 5, the pumping means consist of a small impeller 14 which forms a turbine and is enclosed in a pump body of two plates of molded plastic, namely a plate 15, which on the bottom of the tub with the help of humps or the like 16 rests and an impression or recess 17 for receiving the turbine 14 and two circular arc-shaped and symmetrical to the axis 19 of the Turbine 14 has arranged channels 18, and a second s plate 20, which serves as a cover for space 17 and channels 18. the Both plates 15 and 20 are advantageously made of plastic and can be welded with the aid of a heating wire are connected to one another, which is provided in a groove 21 of the plate 15 and both ends of which through openings 22 to power the wire. When the welding is finished, the two wire ends (not shown) cut under the plate 15, i.e. a weld is carried out with a wire sunk into the pump body 15.

The receiving space 17 for the turbine 14 naturally has an opening 23 for sucking in the water and to its forwarding through the channels 18 to the injection arms or snap arms 24 (see Fig. 4), which on tubular parts

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25 are pushed open, the openings 26 at the ends, Extend the cover of the 20dss pump body.

As can be clearly seen from FIG. 10, is on each Rotary explosive arm 24 is provided with a ring 132 which can be pushed onto the end of each channel 18 and two flaps which are themselves attached to the body of the sprinkler by cliffs.

More precisely, the tabs 133 each have an opening 134, which extends via cams 135 on the circumference 136 of the Place Sprengers.

It has been found that, with this arrangement, the rotary spray arms 24 and the expansion of these have been significantly improved Sprengarme has been greatly simplified in the event of a cleaning. The turbine 14 is rotated by a shaft 28 (Fig. 4), which is connected to an electric motor 27 (Fig. 3) which is housed in a recess 29 in the upper wall 4 of the machine is.

As can be clearly seen from FIGS. 4 and 6, the drive shaft 28 of the turbine T4 is surrounded by a protective sleeve 30, which a] s Reinforcement or stiffening between the top wall 4 of the machine and the pump body is used to counteract the latter the step 11 of the bottom wall 1 of the machine is applied to keep. As can be seen from Fig. 6, the lower end of the shaft 28 carries a fluted sleeve 31 »which on a small Axle with grooves 31 is pushed onto the upper surface of the turbine. As shown in FIG. 32 in FIG. 4, the coupling the shaft 28 to the output shaft of the motor 27 is realized in the same way. A gear or the like is in the upper wall 4 of the machine is provided for discharging the cooling air from the engine. This cooling is provided by an impeller 34 ensures that it is installed in the upper area of the machine, as shown in FIGS. 3 and 4. With the reference number 35 in These two figures are shown a hood with a grille, that

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11 closes the recess 29 and the passage 33.

After the preceding description of the pumping means it can be seen that the symmetrical arrangement of the channels 18 in the Pump body enables a symmetrical flow of the water and its discharge from the openings 36 in the rotary spray arms 24, which advantageously a uniform and balanced rotation of the drive shaft and the turbine with the lowest possible closure usually .MLt37 are designated openings, which are provided on the side of the spray arms 24, so that the water sprayed out through said openings this arms rotates.

As can be clearly seen from FIGS. 4 and 6, the housing rests with the filter 13 in the gradation 11 at the bottom of the Tub, is arranged between the pump body 12 and the front part of the machine and leaves a space free for receiving the emptying means for the waste water 50 is used.

A first embodiment of the invention according to and how is clearly shown in Figs. 4 and 6, these means 50 consist essentially of a pipe stump 51, which from the outside the machine can be moved axially with the aid of a handle 52 which controls an eccentric cam 53, which penetrates a tab 55 fixed to the pipe stump 51 in 54 and can move in an opening 56 (FIG. 4) in this tab. Thanks to these measures, the rotation of the Handle 52 the upward or downward movement of the pipe stump 51. In its upper position shown in FIGS. 4 and 6, the pipe stump 51 releases an emptying opening 57 through which the wastewater can be emptied through a nozzle 58 in the manner shown by the arrow A in FIG. In its low position, the pipe stump 51 closes the outlet opening 57 tightly by opening in a tight manner a U-shaped seal 59 places, and thus serves to form an overflow. In other words, the water level in the tub of the machine can thus measure the height of the pipe stump

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not exceed.

In a preferred embodiment of the invention, such as As shown in Figures 1, 2, 7, 8 and 9, the stub tube 51 is controlled by a lockable button system 110, which is placed on the circumference 9 of the housing.

This one-button system has a first tab 111, one end 112 of which is attached to the body of the machine With the aid of a hinge 113, which is shown in FIG. 9, articulated is. The end 112 of the hinged tab 111 takes in 114 a small rod 115, which can be e.g. Pin 116 is articulated on a tab 117, the is firmly attached to the pipe stump 51, forms a bung and lies on the drainage opening 57 in order to seal it close. The emptying opening 57 is closed in FIG. 7. In order to open up this opening, it is sufficient to have one Apply pressure on the tab 111, causing the rod 115 to pivot and the bung 51 is moved upward. If this pressure has been exerted on the tab 111, it locks its end 118 in a recess 119, which is provided in a second tab 120, which is in 121 on the machine housing is hinged and is constantly pulled up by a spring 122. The upper and locked position of the bung 51 appears clearly on Fig. 8. To unlock the tab 111, i.e., to close the opening 57, it is sufficient to exert a slight pressure on the tab 120. The end

118 of the tab 111 is automatically released from the recess

119 under the effect of the dead weight of the bung 51. Man then receives the position shown in FIG. The articulation 121 of the bracket 120 on the machine housing is in a simple manner by thinning the material mentioned Flap, which consists of a suitable plastic such as polypropylene, realized.

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The housing 13 contains a V-shaped filter 60 which is held by a part 61 of the housing 13. This part forms also a stool 62, which the axial guidance of the pipe stump or bung 51 allows. Incidentally, this stool works with other cusps 63 for the axial guidance of said bung 51 together. The housing 13 with the filter 60 also has a cover 64-forming part which covers the eccentric control. It is of course advisable to avoid that the housing with the filter floats or rises when the tub is filled with water. To prevent this from happening the housing is weighted with a metallic reinforcement, which od a grid the cover 64 consist of one piece, is held. This grid also serves to hold the housing with the filter for a Pull out any cleaning. The sides 67 of the housing 13 have openings 68 for the water to flow through.

In Fig. 69 stools are shown made integral with the pump body and the bottom of the tub in a general manner are. These stools have the task of holding one or more small shovels (not shown) that are removable and are at the same height as the scoop or grille 65 fixedly attached to the filter-forming housing is, weighs down this housing and allows it to be pulled out of the bottom of the tub.

An elongated and hollow body is shown in FIG forms a float which is articulated in 71 on the pump body 12 and controls a rod 72 which extends outside the Machine located and with a contactor (not shown) is connected to the commissioning of the motor 27 at a certain water level in the bottom of the tub is used. In other words, the engine starts moving on a certain one Water level in the machine at which the float 70 is swiveled. This float is on the body 12 of the pump hinged by means of a small axle 73, which passes through two tabs 74 and is bent in 75 to counteract its locking

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- 14 to enable a hump 76.

In 77 in FIG. 4 there is an opening in the pump body 12 and in 78 in FIG. 6 an opening nozzle in the bottom of the tub 1 shown. The bore 77 and the opening stub 78 are axially aligned. Thanks to this arrangement, the pipe stump which forms the bung 51 can be in the rear part of the machine be moved. In this case, the opening and the shutter of said bung automatically controlled by an electric magnet (not shown), which a rod (not shown), which lies outside the tub and is connected to the bung 51. Incidentally, the case is at 79 indicates that "contains the said bar in the event that the bung is provided in the rear part of the machine. In this case, the machine works automatically and the various washing and rinsing processes run without intervention from the outside, which is not the case with the embodiment shown in FIG. It should be noted that a Plate or the like 80, the two housings 81 and 79, which contain the rod 72 and the rod (not shown), which automatically would control a bung like the one labeled 51.

It will be noted that in the case where the bung 51 is provided in the front part of the machine (Figs. 4 and 6), this Bung without leaving the scope of the invention, automatically can be controlled by a linkage or the like (not shown) that is attached under the bottom wall of the machine and is controlled by an electromagnet.

The machine according to the invention does not require any special ones Seals. As is clear from Figs. 2, 4, 7 and 8 besity the uritereBeisidi ^ erunijgrenlirSednaiRgaiv ^^ i ^ -blenkplatte 54 forms, with the aid of which the water splashed on the inside of the door can drain over the inclined area 85 of the housing falling back into the tub.

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In the upper area of the machine, a clock or counter 88 (FIG. 3) of a known type and a control button 89 are not used several positions for the various processes, as will be briefly explained below, are provided.

In the following lines, the successive working phases of the machine with reference to FIG. 1, so as far as the control button 89 is concerned, explained. Of course, with such a machine with actuation manually the control system of the emptying organs, e.g. from the in Fig. 4 or that shown in Figs. 7 and 8 are formed.

After loading the machine, a detergent is added. The emptying bung 51 is then lowered or closed by actuating the handle 52. Thereafter, the supply takes place with warm water, which is supplied e.g. from a tap which is connected to a flexible pipe which runs to one of the nozzles 10. After all, the Control button 89 set to position 1. When the required water level is reached, it takes place automatically thanks to the Float 70, the motor starts up and the dishes are washed in about six minutes (if you can hear the engine turning, the water supply must be turned off so that it does not disturb the machine, because then, as was shown above, so is the emptying bung 51 plays the role of an overflow vessel). After six minutes of washing stops - the engine stops automatically. The emptying bung 51> is lifted or opened by again acting on the handle 52, which the outflow of d ^ r sewage through the Nozzle 58 has the consequence. The bung 51 is closed again and the tap for warning or cold water, depending on the type of dishes opened. The control button 89 is then brought into position 2 and the dishes are rinsed for about three minutes (one is of course worried worn to close the water supply so that this the Cannot damage the machine, as has already been explained above.)

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After three minutes of rinsing, the machine stops automatically and you open the emptying bung 51 again for emptying of the rinse water. As before, you can carry out a second rinse after adding a detergent if necessary became. This second rinse is preferably carried out with hot water, so that when the doors 5 are opened at the end of the The process can dry the dishes relatively quickly. Finally, if this is desired, the filter-forming Housing 13 can be pulled out to remove any debris .

This is the manually controlled mode of operation of the small washing machine according to the invention, which, as already said, can also work completely automatically by using an emptying bung 51, which is either in the rear Part of the machine or in the front part of the machine, and in this case automatically by one of one Electromagnet controlled linkage is operated. In this case one can use automatic means of supplying water and provide for its interruption without departing from the scope of the invention.

According to the invention, a dishwasher was therefore created with very small dimensions (approximately 55 X 58 X 35 cm), which can work automatically by hand beiriebenwasSai oäec , and which has a particularly simple structure, with the essential parts made of molded plastic and easy to insert into one another are. This machine can be set up immediately, disassembled and serviced by anyone.

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Claims (22)

- 17 PATENT CLAIMS 1.) - Small dishwasher with a tub that comes with Water can be fed and in the bottom of which pumping means are provided for this water to bring it to the top The area of the tub that contains the dishes to be washed spray, this little machine thereby is characterized in that said pumping means (12) by a small impeller serving as a turbine (14) are formed, which is enclosed by a pump housing (15 »20) resting on the bottom (1) of the tub, from the water located in the bottom area of the tub and is rotated by a shaft (28) which is driven by a motor (27) is connected in the upper area of said tub, said pump body two to the axis of the turbine (14) has symmetrical channels (18) to the symmetrical To ensure flow of the water sucked in by the turbine to two rotary sprinklers (24), each at the end each channel are arranged, and in this way a regular and balanced rotation of the drive shaft (28) of the machine with minimal wear and tear. 2. - Small machine according to claim 1, characterized that said pump body is formed by two plates of molded plastic, namely a first plate (15) which rests on the bottom of the tub with the help of humps or the like (16) and a depression (17) for receiving the turbine (14), -and from which the two channels (18) extend in the shape of a circular arc, and a second plate (20) forming the cover for this recess. 409839/0676 3. - Small machine according to claim 1 or 2, characterized characterized in that said shaft (28) is surrounded by a protective sleeve (30) which covers the body the pump stops at the bottom (1) of the tub 4. - Small machine according to one of the preceding claims, characterized in that a removable housing which forms a filter (13) together with said pump housing in a step (11) in the bottom wall of the tub is used to access this Way to create a space for receiving and flowing a certain amount of water. 5. - Machine according to one of the preceding claims, d a- characterized in that the filter-forming housing (13) on the front wall of the tub lying side has a space for receiving emptying means for the waste water. 6. - Small machine according to claim 5, characterized in that said emptying means are formed by a pipe stub (51) which is axially movable, serves as an overflow in its lower position and releases an emptying opening (57) in its upper position. 7. - Small washing machine according to claim 6, characterized in that the axial movement of said Pipe stump (51) from outside the machine by an eccentric control (52, 53) is completed, the one on the pipe stump (51) penetrates fixed tabs (55) and can move in this. 409839/0676 8. - Small machine according to claim 6, characterized that the axial movement of the pipe stub (51) is controlled by a small rod (115) which is articulated on this and its pivoting from outside the machine by a system is effected with a lockable button or plunger (110) ". 9. - Small machine according to claim 8, characterized that said system with button has a first member (111), one end of which (112) is articulated on the machine and receives said small rod (115), and the other end in a recess (119) in a second member (120), which is also articulated on the machine and under the action of a Spring (122) stands, can be locked. 10.- Small machine according to one of the preceding claims, characterized in that the housing (13), which serves as a filter, contains a filter (60) in the shape of a V, which is attached to a part (61) of said housing is held, which at the same time forms a hump (62) for guiding said pipe stub (51), the said housing is spanned by a cover (64). 11.- Small machine according to one of the preceding claims, characterized in that the Bump (62) of said filter-forming housing with other bumps (63) works together, which is fixed to the Trough for guiding said pipe stump (51) are attached during its axial movements. 409839/0676 12. - Small machine according to one of the preceding claims, characterized in that said filter-forming housing (13) has openings (6s) in its side walls (67) for the flow of water and an opening opposite the said pump body. 13. - Small machine according to one of the preceding claims, characterized in that a hollow organ which forms a thin float (70) in the tub is provided which is hinged to the body of the pump and controls a rod (72), which is preferably outside the tub is arranged and with a contactor for starting the engine at a certain water level connected in the bottom of the tub. 14. - Small machine according to one of the preceding claims, characterized in that a receiving space for an impeller in the upper region of the tub (34) is provided for cooling the motor (27) and with a passage (39) for evacuating the air to the outside connected is. 15. - Small machine according to one of the preceding claims, characterized in that said emptying means are automatically operated by an electromagnet which actuates a rod connected to said pipe stub (51). 16. - Small machine according to one of the preceding claims, characterized in that the front wall of the machine is covered by two lockable doors (5) is formed, which are hinged to the housing of the machine by material thinning (5a) and at the same time open upwards or downwards, thanks to a system of articulated arms (102, 103). 409839/0676 17. - Small machine according to claim 16, characterized that at least one of said articulated arms (102, 103) around a pin (105) pivots, which serves as an axis of rotation and is provided on the inside of the side wall of the machine housing. 18. - Small machine according to claim 16 or 17, characterized characterized in that the locking of said doors (5) is ensured by two buttons (1O6) whose pressing together or releasing controls rods (107) which are under the action of a spring and the ends of which are accommodated in corresponding openings in the side walls (3) of the machine housing. 19 · - Small machine according to claim 16, characterized that the lower part of the lower door has an edge (84), which allows the measuring of the Inside of said doors allows water to be sprayed into the tub. 20. - Small machine according to one of the preceding claims, characterized in that nozzles (10) for supplying water on the sides of the Tub are provided. 21. - Small machine according to claim 1, characterized that said rotary spray arms (24) are detachable by means of the end of each arm (18) a ring (132) are attached, which is applied to said rotary spray arms and elastically locked on them is. 22. - Small machine according to claim 21, characterized that the said ringft32) fl33idrehbsr is applied like a clamp to the end of each channel (18) and has two tabs (133) with openings (134), the elastic in pegs (135) attached to the body of the 409839/0676 - 22 rotating detents are provided, are locked, 409839/0676 Blank page