DE1503788A1 - Automatic washing machine or dishwasher and the like. with dispenser for treatment agent - Google Patents

Description

The invention relates generally to automatic washing and winding machines and the like, and particularly relates to an automatic dispensing device for * treatment agents used in these machines.

The dispensing device according to the invention is particularly useful Can be used as an injection device for the rinse aid in automatic dishwashers »As is well known, during the final rinse, the dishwasher a rinse aid or wetting agent introduced into a dishwasher, to prevent the formation of stains on the dishes and

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special atxf glassware when drying after washing reduce to a minimum. This suggestion of introducing a rinse aid into the washing water of the dishwasher is not new and numerous devices for carrying it out have heretofore been proposed. However The devices proposed so far require the association of complex electromagnets and / or refilling after each Using the machine “Also, leave no choice as to of adding the treatment agent to »

A treatment agent dispenser for use in automatic washing machines or dishwashers and the like Container for holding a certain amount of the treatment agent, which with each "-pressure of the dispensing device is dispensed, means for dosing a predetermined amount of the agent removed from the storage container and for feeding into the washing machine or rinsing machine of the washing machine or dishwasher and manually operable energy storage means, which are assigned to the dosing means in such a way, «LaB when releasing the stored Energy actuation of the dosing means is effected.

According to the invention, a treatment agent dispensing device is proposed, which in autoinatds chen washing or Dishwashers with a washing or rinsing combex for inclusion the objects washing or rinsing in it, with facilities for carrying out the washing or flushing process

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and with a program control device to automatically control the sequential sequence of the various operations during washing and rinsing and, if necessary, drying. Furthermore, dosing means · are provided to a predetermined amount of the gauge Behandiungsmittels and to promote it from the container into the washing or rinsing chamber of the machine λ. Energy storage means are assigned to the dosing means in such a way that the release of the stored energy by the storage means causes the dosing means to be actuated. In order to supply energy to the energy storage means, i.e. to charge them with energy, manually operable means are provided, and the energy storage means can be triggered by the sequential control means to effect the release of the treatment agent into the washing or rinsing chamber Arrangement, the dispensing device ™ can only come into operation when the energy storage means has previously been supplied with energy by hand. Accordingly, the operator of the automatic washing machine or dishwasher can influence the cycle in the course of which the dispensing device operates by operating the manually operable means.

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In Figures 1 to 6 of the drawings, the subject of the invention based on a particularly preferred embodiment shown, which is explained in more detail below «They show: · .;

1 shows a dishwasher that can be opened at the top

(Tub dishwasher), which for the purpose of clarification of details mostly shown in section and some with an according to the invention Treatment agent dispenser is equipped;

Figure 2 is a side view of the treatment agent dispenser according to the invention;

3 shows a section through the dispensing device according to FIG. 3 along the line 3-3 in FIG. 2;

P Fig. H a section through part of the head piece of

The apparatus of Fig. 2 along line 4-4 in

Fig. 3;

Fig. 5 is a section through part of the head piece of

The apparatus of Fig. 2 taken along line 5-5 in Fig. 3;

Fig. 6 is a side view of the head piece of the device
according to FIG. 2 in another phase during the
Operating.

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In the drawings, particularly in FIG. 1, there is an automatic dishwasher in the form of one movable on castors Dishwasher 10 is shown, the outer housing 11 of which, together with the base 12 and the cover part 13, form the washing chamber 14 forms. In the interior of the washing chamber 14 are located the crockery racks or baskets 15 and l6. The harness support frame .: 16 consists of two crockery baskets, namely the fixed rear basket 17 and the movable front basket Basket 18. *

After opening the lid 19, on the inside of which the lid part 13 is attached, the washing chamber 14 is accessible from above. The closure lid 19 is opening and closing about the hinge axis 20 »The seated on the lid part 13 holders 21 are pivotally attached to the front rack and connect it to the D _e ckel 19 in such a manner that the front basket 18 when opening the cover 1 $ l is moved up and backwards so that it comes to rest above the rear stationary crockery basket M 17. To control the tilting of the basket 18 during its displacement is used on the bolt or the like. 23 on the crockery basket 18 articulated lever arm 22, which around the bolt or the like. 2k is pivotable on the housing 11.

The bottom 12 of the washing chamber ~ \ k has a central, funnel-shaped part 12a in which any liquid present in the chamber Ik collects. The motor-pump assembly 26 is carried by the base 12 in the interior 25 of the funnel part 12a; this consists of the electric drive motor

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27 and the pump 28 directly coupled to it. The pump has a barred entry opening 29 through which the Liquid is sucked from the space 25, which is then taken from the Pump 28 upwards ia the spray arm 30 and into the spray tube 31 In addition, the pump 28 pushes liquid through the pipe 32, which is connected to the pipe via the pipe coupling 34 ^ 33 on the cover 19 is in connection. The one on the line 32 pumped liquid emerges from the rotatable cover 19 arranged spray device 35 in the chamber 14 from.

If the direction of rotation of the drive motor 27 is reversed after a corresponding switchover, the pump 28 sucks the washing or » Washing liquid from the space 25 and pushes it out through the drain opening 36. In the washing chamber 14, an electric can be used to heat the washing liquid contained in it or to facilitate the drying of the dishes carried by the racks 15 and 16 after the washing and rinsing process is complete Heater 37 may be arranged.

The structure described above is mostly common; he can also be designed in another way without affecting the invention this would be significantly affected »As already mentioned above, the invention is not applicable in any Way limited to dishwashers, which are presented here only as a preferred application example and are described.

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A panel 38 is attached to the front of the housing 11, through which a chamber 39 is formed between the front wall of the housing 11 and the walls of the diaphragm 38, in which such elements as the program control device 4o (Fig. 2) and the treatment agent dispenser according to the invention, are housed.

In FIGS. 2 to 6, the treatment agent dispensing device 41 according to the invention is shown in detail for the purpose of better illustration. The treatment agent dispensing device 41 has a container 42, the interior of which is connected to a filling tube 43. As shown most clearly in FIG. 3 ^ ^m , the filling pipe 43 is arranged in such a way that it is passed through the wall 11 and ends in the washing chamber 14. With this arrangement, any treatment agent spilled during the filling of the container falls into the rinsing chamber 14 instead of on the floor as it would if the loading port of the filler tube were located outside the rinsing chamber "\ h . To facilitate pouring the treatment agent into the filler tube A funnel-shaped part 4 is provided at its end 43. A removable cap 45 closes the open end of the filling tube

The container 42 of the dispenser 41 is with its lower Part 46 with the help of screw 47 on the wall of the housing and with its upper end on the connection part 48a of the head

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partly 48 of the dispensing device 41 attached in a liquid-tight manner, about leaks or leakage losses of the treatment agent to avoid at the joint between the container 42 and the connector 48. The head part 48 of the device 41 is attached to the housing 11 by means of the nut 49, which with the flange 50 on the filler pipe 43 cooperates so that the Housing wall 11 between the nut 49 and the flange 50 sealing is clamped "

A metering pump consisting of the piston 51 and the cylinder 52 is arranged in the interior of the container 42. The cylinder 52 forms part of the bottom of the container 42. The cylinder 52 is in communication with the washing chamber 14. The channel 53 located in the bottom part of the container 42 connects the interior of the cylinder 52 at the connection point 54 with the tube 55t which extends upwards in the container 42, where it is fastened in the mouth 5 ^ of the channel 57 in the head piece 48. The channel 57 leads to the opening 58 »which in turn lies in the washing chamber 14. Thus, when the piston 51 moves downward, liquid is conveyed from the cylinder 52 through the channel 53, the pipe section 55 and the channel 57 to the outlet opening 58 in the rinsing chamber 14.

The required amount of the to be introduced into the rinsing chamber 14

■ ■ · ■■ - ■ 3 3

Low treatment agent is approx. 1.0 cm to 1.8 cm. When introducing an amount of treatment agent within this

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Limits in the flushing chamber 14 will produce the desired result achieved. The relatively large tolerance of 0.3 cm allows for a different level of the treatment agent in the container 42 conditional different delivery rate to the metering device. With the When the container 42 is completely filled with treatment agent, the cylinder 52 and the outlet opening 58 remain in the rinsing chamber 14 interconnecting channels between two consecutive Actuations of the piston 51 essentially full, However, when the container 42 is almost empty, the channels connecting the cylinder to the rinsing chamber 14 are essentially empty because the level of the treatment agent in the pipe is practically the same as the level of the treatment agent in the container 42. The volume of the container 42 with the outlet opening 58 in the washing chamber 14 connecting Channels can be dimensioned so that the discharged into the chamber 14

3 level treatment agents are between about 1.8 cm at substantially full container 42 and with full stroke of the piston

3 57 of the dosing device and about 1.0 cm at essentially empty container 42 of the metering device fluctuates. To the delivery amount To keep it practically constant, a small check valve can be used in the channel 53.

The piston 51 or its piston rod 51a extends in the upper part of the head piece 48 and carries at its upper end the bolt 59, both ends of which in the slots engage in the legs 61 of the fork head 62. The fork-

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head 62 sits on the rotatably mounted in head part 48 Shaft 63 »the cam disk on its outwardly protruding end 64 is attached, on which the attached tension spring 65 acts to rotate the shaft 63 '. How out the drawing can be seen, the spring 65 acts on the Cam 64, shaft 63 and its clevis 62 in in such a way that the piston 51 at Fr-input dex · cam disk 64 is pressed down.

A pawl 66 is pivotably mounted on the head piece 43 of the dispensing device 41. This pawl 66 has a stop 671 which interacts with the other cam of the cam disk 64 provided contact surface 68 in such a way that the cam disk 64 is held by the pawl 66 in its "pretensioned" starting position.

In this "pretensioned" starting position of the cam disk 64, the piston 5I i * ^{1 is in} its upper position; the spring 65 is stretched. This position is shown in FIGS. 3, 4 and 5. The spring 69 acts on the pawl 66 in such a way that it is pulled in the direction of the cam disk 64 that the pawl 66 automatically holds the cam disk 64 in its tensioned position as soon as the cam disk 64 is rotated so far that the stop moves 67 can place in front of the contact surface 68 on the cam disk 64.

BATH ORIGINAL

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In order to enable the cam disk 64 to be tensioned by hand, a hand-operated handle 70 is provided. The pawl 66, the spring 65 and the cam disk 64 all work together and form an energy store which, when triggered, actuates the metering device and thereby the Causes delivery of a certain amount of treatment agent from the container 42 into the rinsing chamber 14,

The energy store is tensioned or charged (energizing) by depressing the handle 70 by hand, as a result of which, as can be seen from FIGS. 2 and 6, the cam disk 64 is pivoted. The handle 70 is depressed until the stop 67 can step in front of the contact surface 68 on the cam of the cam disk 64, whereupon the tension spring 69 acts on the pawl 66 , as can be seen from FIGS pulled xvird. The energy store thus remains pretensioned until the pawl is pivoted back by the cam disk 64, thereby releasing the cam disk 64; the strained F of the 65 causes

now that the piston 51 ', as described above, releases a certain amount of the treatment agent into the rinsing chamber 14. On the pawl 6b there is an attachment 71 which is arranged in such a way that it lies in the area of action of the lever arm J2 moved by the program control device 40.

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As can be seen from the above description, a treatment agent dispensing device was proposed by the invention in which a treatment agent supply can be stored for several days and which requires a single actuation, but through which an expensive electromagnet comes in port case. The operating selectivity is achieved by the clamping device, which consists of the operating handle 70 and the trigger emit te In. with the lever arm 72 and the extension 7 ″ on the pawl 66. The program control device rotates the lever 72 once per operating cycle when the dishwasher is in operation ; but this is only possible if the energy storage device has previously been charged or tensioned by depressing the handle 7 °. Another essential feature of the invention is that by using manually supplied energy to charge the energy storage device from the motor of the Program control device for actuating the treatment agent dispensing device only needs a minimum of work to be done, since this no longer has to generate the energy for the dispensing of the treatment agent. This is important because the motors built into program control devices normally only have a very low power. Their service life would be reduced considerably if they were also used to drive a working device, /.

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Another essential feature of the invention is the structural design, through which the occurrence of leaks is impossible. Fig. 3 shows that all critical points of the metering device, in particular the pipe connections in the connection line within the container kZ , so that if any leaks occur at these connection points, the leakage losses will only occur within the container, so that they are practically no problem leti.

The invention includes everything that is contained in the description and / or shown in the drawing is, including what is obvious in deviation from the specific exemplary embodiments for the person skilled in the art.

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Claims (5)

PATENTANiYALTE ey PATENTAN MUNICH 2 ALi PATENT Attorney DIPL.-ING. RICHARD MÜLLER-BÖRNER PATENT Attorney DIPU.-ING. HANS-HEINRICH WEV BERLIN-DAHLEM 'PODBIELSKIALLEE 68 MUNICH 22 ■ WIDENMAYERSTRASSE 49 PHONE! 76 29 07 TELEGRAMS: PROPINDUS ALi TELEPHONE i 22 BS 85 TELEGRAMS: PROPINDUS 18 310 General Electric Company S'chenectady, New York (USA) Claims Automatic washing machine or dishwasher or the like. with a washing or rinsing chamber for receiving the items to be washed and / or rinsed, with means for carrying out the washing or rinsing process and with program control means for the consistent execution of the individual work steps, characterized by a Beharidlungsmitte! - Dispensing device, which has a container (42) for holding a certain amount of one with each actuation to the dispenser to be applied agent and dosing CD medium (51 »52) to Pördorn a predetermined amount of the oo ^N> from the container (42) into the washing or Spülkam _o mer (14), wherein the metering means energy storage -j means (66, 65, 64) are assigned in such a way that the on '. Release of the stored energy actuating the dosing device , medium, while the energy storage means (66.65 » TELEPHONE I 0U40S7 can be operated by hand. 2. Machine according to "> claim. 1, characterized in that the Energy storage means are triggered in the course of the washing or rinsing cycle by the program control means, 3. Machine according to claim 1 or 2, characterized in that the energy storage means contain a cam disk (64) which is coupled to the dosing means and is under the action of a spring, which can be triggered by a pawl {66) by the program control means (40, 72). is held. 4. Machine according to claim 1, 2 or 3 »characterized in that that the dosing means one with the energy storage means associated jacks (51) included with a cylinder (52) cooperates, which on the one hand with the container (42) is connected and on the other hand with a delivery line (53>) opening into the washing or rinsing chamber (14) 55 »57)» which lies essentially within the container (42). 5. Machine.according to one or more of claims 1 to 4, otherwise as described and / or shown. 909-821 / 0475 L '/' lG