US3060946A - Dishwashing machine - Google Patents

Dishwashing machine Download PDF

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Publication number
US3060946A
US3060946A US79501259A US3060946A US 3060946 A US3060946 A US 3060946A US 79501259 A US79501259 A US 79501259A US 3060946 A US3060946 A US 3060946A
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United States
Prior art keywords
housing
pump
sump
rack
liquid
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English (en)
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Lantz Kurt David
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Electrolux AB
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Electrolux AB
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    • 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
    • A47L15/26—Washing or rinsing machines for crockery or tableware with movement of the crockery baskets by other means
    • A47L15/30—Washing or rinsing machines for crockery or tableware with movement of the crockery baskets by other means by rotating only
    • 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
    • A47L15/0089—Washing or rinsing machines for crockery or tableware of small size, e.g. portable mini dishwashers for small kitchens, office kitchens, boats, recreational vehicles
    • 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
    • A47L15/4214—Water supply, recirculation or discharge arrangements; Devices therefor
    • A47L15/4223—Devices for water discharge, e.g. devices to prevent siphoning, non-return valves
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/86236—Tank with movable or adjustable outlet or overflow pipe
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/86348—Tank with internally extending flow guide, pipe or conduit

Definitions

  • a general object of the invention is to provide a compact, relatively inexpensive, easily operated dishwasher of improved effectiveness in operation.
  • Another object is to provide a novel dishwasher construction in which the dish rack or racks are rotated with respect to the source or sources of the washing fluid.
  • a further object is to provide such a dishwasher wherein the rotatable rack is driven, at relatively slow speed, from the same power means employed to drive the pump of the machine.
  • Yet another object is to provide improved drive means for dishwashers.
  • a still further object is to provide, in a dishwasher of the type described, improved liquid distributing and operating means.
  • FIG. 1 is a view, partially in vertical section and partially in elevation, of a dishwashing machine constructed in accordance with one embodiment of the invention
  • FIG. 2 is an end elevational view of the electrical driving motor, and its control switch, employed in the device of FIG. 1;
  • FIG. 3 is a side elevation of the motor and switch shown in FIG. 2;
  • FIGS. 4 and 5 are perspective views, on a smaller scale than FIG. 1, showing the dishwasher of FIG. 1 with the cover open, FIG. 4 illustrating the device without dishes and FIG. 5 illustrating the device with dishes;
  • FIG. 6 is a perspective view of the dishwasher of FIG. 1, as viewed from below;
  • FIG. 7 is an elevational view of the dishwasher of FIG. I mounted on a supporting frame
  • FIG. 8 is a perspective view similar to FIG. 4 but showing the dish rack in raised position
  • FIG. 9 is a perspective view of the dishwasher with the cover closed.
  • FIGS. 10 and 11 are detail elevational views showing a combined motor housing and dish rack guide employed in the device of FIG. 1, FIG. 10 showing the rack in raised position and FIG. 11 illustrating the same in lowered position;
  • FIG. 12 is a fragmentary vertical sectional view, enlarged in scale, taken on line 12--12, FIG. 9;
  • FIG. 13 is a plan view of a cover for the detergent supply opening of the dishwasher.
  • FIGS. 14 and 15 are fragmentary vertical and horizontal sectional views, respectively, illustrating a protective and sealing strip applied to certain edge portions of the dishwasher housing;
  • FIG. 16 is a fragmentary vertical sectional view taken on line 16-16, FIG. 9;
  • FIG. 17 is a horizontal sectional view through the dishwasher of FIG. 1 with the dish rack removed, 17 being on the same scale as FIG. 1;
  • FIG. 19 is a top plan view of the mechanism of FIG. 18, with some parts broken away;
  • FIG. 20 is an elevational view of the mechanism shown in FIGS. 18 and 19;
  • FIG. 21 is an enlarged detail vertical sectional view of a portion of the device, including the centrifugal pump, rotating liquid distributor, rotary dish rack support, and associated transmission means; and
  • FIG. 22 is a view, mainly in top plan, of the mechanism of FIG. 21, FIG. 22 being taken on line 22-22, FIG. 21, and the section of FIG. 21 being taken on line 21-21, FIG. 22.
  • this embodiment of the invention comprises a cylindrical housing, indicated generally at 10, including an upper portion 11 and a base portion 12.
  • the top edge of base portion 12 is offset outward, the bottom edge of upper portion 11 is seated in the offset, and the resulting horizontal joint is covered by a combined sealing and supporting strip 13, of rubber, plastic or the like.
  • Both housing portions 11, 12 are fabricated of aluminum sheet or glass fiber reinforced resinous material.
  • Upperportion 11 is provided with a horizontal top wall 14.
  • Lower housing portion 12 has a generally horizontal bottom wall 15 to which are attached a plurality of feet 16.
  • a dependent annular flange or skirt 17 is carried by wall 15 to shield certain parts of the device hereinafter described.
  • upper portion 11 of the housing is cut along a line extending upward, then along the top wall 14 toward the center, then outward and again downward, as indicated at 18, the resulting edge of portion 11 being protected by a soft strip or bead 19 of soft rubber or plastic.
  • portion 11 is provided with a series of openings 20 extending along a line parallel to the edge 18, and strip 19 has a plurality of retaining lugs 21 spaced in such fashion, as to be insertable in openings 20. Adjacent lugs 21 in the series project through openings 20 from opposite sides of the sheet ma terial making up portion 11 of the housing.
  • Door 22 Cooperating with the opening defined by edge '18 is a door 22, similar in shape to portion 11, and arranged for sliding movement between a nested position, in which the dishwasher is open, as seen in FIG. 8, and a closed position, seen in FIG. 9.
  • Door 22 includes a vertical portion 23, constituting part of a cylinder, and a horizontal top portion 24, the latter having a portion 25, at the center of the dishwasher, forming a ring seen in dotted lines in FIG. 2.
  • Top wall 14 of upper housing 11 has a circular central opening closed by a cover plate 26, FIG. 1, and coaxial with the ring just mentioned.
  • a cylindrical casing 27 extends from top wall 14 downward through the central opening therein and through ring 25 of the door.
  • casing 27 has a plurality of outwardly directed ears 28' which rest on the top of wall 14 and extend about the central opening in Wall 14.
  • Screws 29 extend downward through cover plate 26, ears 0 2S and top wall 14 and are each threaded into one of a plurality of nylon or like elements 30 which serve both (I) as retaining nuts and as guides and supports for ring portion of door 22.
  • each element has a slot at 31 opening horizontally outward, and the ring 25 of the top portion 24 of the door is slidably engaged in such slots.
  • Elements 30 can, of course, be combined into an integral member of arcuate form.
  • door 22 At its bottom edge, vertical portion 23 of door 22 has secured thereto a plurality of hold-down and guide elements 32, of nylon or the like, having angular slots 33 engaged over the inwardly and downwardly directed portions of an arcuately extending guide rail 34, as seen in FIG. 16, the guide rail being mounted on the inner face of housing portion 12 adjacent the top edge thereof.
  • Door 22 is manipulated by handle 35 and is provided with an opening 36, FIG. 9, closed by a suitable transparent sheet to provide a viewing window.
  • the door also has an opening 37, FIG. 9, for the introduction. of detergent, which opening is closed by a cover 38 mounted on the lower face of the door portion 24, as by pivot pin 39.
  • Cover 38 has a finger grip 40, allowing the same to be opened and closed.
  • Bottom wall 15 is provided with a central, circular opening.
  • a cup-like sump casing 41 having a cylindrical side wall 42 and an outwardly directed annular flange 43, is mounted on wall 15, as by screws 44, with flange 43 surrounding the central opening.
  • a liquid supply conduit 45 extends through the side wall of sump casing 41, thence below wall 15 and upward along the outside of the housing to a flow chamber 46 mounted on the side of the upper housing portion 11.
  • Chamber 46 has suitably connected thereto a flexible delivery hose 47 to be connected to a faucet or other liquid source.
  • hose 47 has a free end equipped with a flexible female coupling 48 fabricated of rubber or the like and having an internal conical flange 49, tapering toward the interior of hose 47.
  • coupling 48 is provided with a suction cup 50 by which the coupling, and thus the free end of hose 47, can be attached to a portion of the housing: surface, such as the top wall 14, when the hose is not in use.
  • hose 47 extends through and is sealingly supported by the side wall of chamber 46, as seen in FIG. 1.
  • Supply conduit 45 leads from a lower portion of chamber 46.
  • the chamber is provided at the bottom with a drain 51. located above a collecting funnel 52, the bottom of which is turned inward and extends through housing portion 11, as seen at 5 3, to deliver to the interior of the dishwasher.
  • the end of delivery hose 47 connected to the flow chamber 46 is arranged horizontally to deliver liquid, under faucet pressure, in such fashion that the liquid follows a whirl path in chamber '46, descending to the laterally arranged inlet of supply conduit 45.
  • chamber 46 is provided with a cover having an air vent 54 communicating with the atmosphere via top opening 55 of the chamber.
  • sump casing 41 is provided with a lateral opening in which is mounted a valve seat '56.
  • the discharge opening at the side wall 42 of the sump 41 which is defined by the valve seat 56, is circular and is in alignment with the circular opening 58 in horizontal piping 57. From the size and location of the connection 69 in FIGS. 1, 18 and 19, it will be seen that the sump discharge opening is so dimensioned that it extends vertically for the greater part of the side wall 42 of the sump 41 and increases in width in an upward direction from its bottom.
  • the pipe coupling 57 provided with the lateral opening 58 is disposed tangentially with respect to casing 41 and is secured thereto with its opening in registry with the valve seat 56.
  • coupling 57 has a lateral boss through which extends a valve operating rod 59, therod extending exteriorly of the coupling transversely thereof to valve seat 56 and there being equipped with a movable valve element 60 cooperating with the valve seat.
  • the arrangement is such that, when rod 59 is moved outward from the dishwasher, valve element 60 engages seat '56 to prevent liquid from flowing from the sump chamber into the coupling, while opposite movement of rod 59 opens the valve to allow such flow.
  • one end of the spring 64 is connected to projection 63 at a point approximately aligned with the pivotal axis of lever 61 so that, as the lever is moved past the mid-point in its valve-opening direction, the spring becomes effective to bias the lever to a position in which the valve is held open.
  • valve rod 59 Since valve rod 59 is constrained to move rectilinearly, provision must be made for variation in the effective length of the shorter arm of the bell crank lever during operation of the valve. This is accomplished by having the pivot between the shorter lever arm and the valve rod carried by a cross-slide 59a free to move transverse to the rod but restrained against movement axially relative to the rod.
  • a flexible drain hose 65 To one end of coupling 57 there is attached a flexible drain hose 65. To the other end there is attached an elbow 66 of relatively firm, resilient or compressible material, such as rubber or synthetic resin composition. Bottom wall 15 of the housing is provided with a circular drain opening. The upper end of elbow 66 has an exteriorly facing annular groove 67 and the edge portion of wall 15 defining the drain opening is engaged in this groove.
  • a relatively short, upright overflow pipe 68 is disposed with its lower end inserted in the upper end of elbow 66, the outside diameter of the lower end of the overflow pipe 68 being slightly larger than the normal inner diameter of the upper end of the elbow, so that the upper end of the elbow is compressed and the walls of groove 67 are tightly engaged with the circular edge provided by wall 15, thus providing a good fluid tight seal between the overflow pipe, the elbow and wall 15, and also providing good mechanical support for the elbow.
  • Overflow pipe 68 is thus mounted in vertical position, with its top end spaced materially above wall 15.
  • pipe coupling 57 has identical, plain cylindrical ends and that identical connector sleeves 69 are employed to connect hose 65 and elbow 66 to the coupling.
  • the hose can be connected to either end of the coupling, so as to extend from the dishwasher in either of two directions, as desired.
  • bottom wall 15 is provided with an additional drain hole at 70, FIG. l8, closed by a suitable removable plug 71, FIGS. '17 and 18, the hole at 70 being on the opposite side of the valve mechanism, as shown.
  • a vertical electrical motor 72 Rigidly secured within motor casing 27, is a vertical electrical motor 72. Secured to the upper end of the motor is a supporting and controlling assembly 73 provided with lateral mounting ears 74 screwed to main top wall 14 of the housing. Assembly 73 includes a switch unit, indicated at 75, and the usual condenser 76 and fuse 77. Connection to house current is accomplished via flexible cable 78, FIGS. 3, 8 and 9, in the usual fashion.
  • switch unit 75 comprises an oscillatable actuator 79 of nylon, etc., pivoted at its center, as by pin 80, and actuating the switch via spring-biased slide 81.
  • the actuator 79 has a portion extending toward the center of the dishwasher.
  • Top wall 24 of door 22, including ring 25, carries a stop portion disposed to travel an arcuate path, adjacent said inwardly extending portion of the switch actuator, the stop portion being so disposed as to prevent movement of the switch actuator except when the door is fully closed.
  • the switch is biased to a position, seen in FIG. 2, cutting off current flow to the motor, when the door 22 is open.
  • motor 72 is located entirely within casing 27, and since the casing is disposed wholly below top wall 14 of housing 10, the apparatus is unusually compact and can be made of such size as to be accommodated on the counter or sink space beneath the usual kitchen wall cabinets. In this connection, it is to be noted that the motor is actually surrounded by the dishes, etc., being washed (see FIG. 5) so that the height of the apparatus is minimized.
  • motor shaft 82 At its free end, motor shaft 82, FIG. 3, is connected to a combination cooling fan on coupling 83.
  • the upper end of a vertical power shaft 84 is connected to the fan and coupler, as shown.
  • casing 27 At its bottom end, casing 27 has a central opening in which is disposed the upper end of a vertical tube 85, a fluid-tight seal being maintained between casing 27 and tube 85, as by packing 86, FIG. 1.
  • Power shaft 84 extends concentrically within tube 85, there being an annular space between the shaft and tube.
  • Cover plate 26 is provided with suitable air inlet openings 79, FIG. 8, and fan 83 is effective to draw air inward through said openings, through the motor, and force the air down tube 85, assuring that moisture cannot reach the motor via the tube.
  • impeller 88 advantageously of glassfiber reinforced phenolic resin composition, of a centrifugal pump 89, as seen in FIG. 21.
  • the pump comprises a hollow body 90 defining a pump chamber 91 generally in the form of an inverted conical frustrum.
  • Impeller 38 is similar in shape to the pump chamber and is provided at the bottom with a central inlet opening 92. From inlet 92, grooves 93 extend radially outward, the grooves being closed by a generally frusto-conical, sheet metal shield 94 fitted to the lower face of the impeller and held in place by a retainer portion at 95.
  • the bottom wall of pump body 90 is provided with a central, circular opening in which is seated an anti-friction bushing 96.
  • Shield 94 has a downwardly extending cylindrical extension 97 journaled in the bushing 96 and via which liquid can flow to the impeller inlet.
  • Pump chamber 91 includes an annular space 98 around the periphery of the impeller and to which the liquid from grooves 93 is delivered during operation of the pump, space 98 communicating directly with an outlet channel 99 leading to a distributor chamber 100 defined by the pump body above the pump chamber and at one side of the axis of rotation of the impeller.
  • Pump body 90 is mounted on the bottom wall of sump casing 41, as by screws 101, FIGS. 1 and 22. As seen in FIG. 1, the arrangement is such that the bottom wall of the sump pump body is spaced slightly above the bottom wall of the sump casing, the inlet opening being disposed well below the upper limit of the outlet opening afforded by valve seat 56. Hence, when a sufiicient quantity of liquid is in the sump casing, rotation of the impeller by shaft 84 is effective to pump the liquid to distributor chamber 100, from whence it will be forced through spray pipes as hereinafter explained.
  • Pump body 90 has a centrally disposed, upwardly extending hollow boss 102, through which shaft 84 extends freely, and in one side of which is a lateral opening. As seen in FIG. 22, there extends from the top of the pump body an upright web 103 in which is journaled a shaft 104, FIG. 21, to which is secured a nylon worm Wheel 105. Fixed to the shaft 84, within boss 102, is a worm 106. Worm wheel 104 extends through the lateral opening in the boss and is operatively meshed with the worm, as seen in FIG. 21. Also fixed to shaft 104 is a bevel gear 107 meshed with a second bevel gear 108, the latter being secured to a vertical shaft journaled in bracket 109, FIG. 22.
  • a pinion 110 Fixed rigidly to boss 102 and extending upward therefrom, concentric with shaft 84, is a tubular bearing 111 on which is journaled a gear 112 of substan" tially larger diameter than pinion 110, pinion and gear 112 being operatively meshed.
  • Gear 112 has an upper hub 113 in the top face of which is a diametrically extending slot 114.
  • a friction disc 115 having a central. opening to clear extension 116 of bearing 111, rests on the top face of hub 113 and is provided with downwardly bent tongues 117 engaging in slot 114, so that the friction disc is caused to turn with gear 112.
  • pinion 110 Rigidly connected with pinion 110, and located in a horizontal plane below the pinion, is an eccentric 110 disposed in a circular opening in distributor actuating pawl 119.
  • the pawl is loosely pivoted to the pump body, by means of a vertical screw or the like at 120.
  • the top of distributor chamber 100 is closed by a manifold block 121 fixed to the top face of the pump body, as by screws 122, FIG. 22.
  • Manifold block 121 is provided with five upwardly extending bores 123 each opening toward distributor chamber 100 and communicating with a different one of five horizontally extending bores 124.
  • Mounted in the manifold block and each communicating with a horizontal bore 124 and hence a different vertical bore 123 are the lower, horizontal end portions of spray pipes 125-129.
  • Upright bores 123 are arranged in a circular series at the center of which is a vertical bore in which is rotatably disposed a shaft 130.
  • shaft Above manifold block 121, shaft has fixed thereto a ratchet wheel 131.
  • shaft 130 drives rotary distributor valve means indicated generally at 132, FIG. 21.
  • Means 132 includes a nylon disc 133, disposed against the bottom face of block 121, and a lower metal disc 134 disposed against disc 133, both discs having central openings freely surrounding shaft 130.
  • Disc 133 has an integrally formed dependent pin 135 extending through an aperture in disc 134. Hence, the two discs must rotate as one.
  • a spring 136 is secured rigidly to the lower end of shaft 130 and has a notched or forked end portion 137 in which pin 135 is engaged, so that rotation of the shaft is imparted to the two discs.
  • Spring 136 extends radially from shaft 130 and curves upward, resiliently urging discs 133, 134 against the lower face of manifold block 121.
  • Discs 133, 134 are each provided with a single opening 138, held in registry disc-to-disc by reason of pin 135, and so spaced from shaft 130 as to be brought into registry successively with the upright bores 123 in manifold block 121 as shaft 130 is rotated.
  • tubular 'bearing 111 has secured thereto a sleeve 140 which is fitted into the bottom end of tube 85. Hence, air forced downward in tube 85 by operation of fan 83 ultimately escapes via bearing 11]. and the lateral opening in boss 102.
  • the dish rack is indicated generally at 14 1 and includes a centrally disposed base support 142, best seen in FIG. 21.
  • Support 142 comprises an annular lower plate 143 an an upper plate 144 provided with a central opening 145 to accommodate tube 85;
  • Lower plate 143 is prov-ided with a peripheral, upwardly opening notch 146, While plate 144 has a peripheral, outwardly directed flange 147.
  • the two plates are secured together, as by screws seen in FIGS. 4 and 8, and the inner, horizontally extending portions 148 of the plastic covered wires or rods making up the lower portion of the dish rack are clamped securely between notch 146 and flange .147.
  • At least lower plate 143 of base support 142 is fabricated of nylon or similar material and has a flat, horizontal bottom face which frictionally engages the top face of friction disc 115, Accordingly, with the rack in its lower position, as seen in FIGS. 1 and 4, rotation of shaft 84 to drive pump 89 also rotates the dish rack 141, since friction disc 115, and therefore base support 142, is caused to rotate by the transmission described with reference to FIGS. 21 and 22. It will now be understood that all of the torque for driving the dish rack 141 in its lower position is transmitted frictionally from the lower element 115 to the upper element 142.
  • rack 141 At its top, rack 141 includes a circularly spaced series of upright plastic covered wires or rods 149 connected at their upper ends by a circularly extending wire or rod 150 which, as best seen in FIGS. and 11, carries a plurality of spaced, .arcuate, nylon slide bearing pads 151.
  • the diameter of circular wire or rod 150, and the dimensions of pads 151, are such that the bearing pads slidably engage the surface of combined guide and motor casing 27.
  • the casing 27 is provided with an annular series of protrusions 152, the upper surfaces of which all lie in substantially the same horizontal plane. Laterally of casing 27, the dimension of protrusions 152 is such that the protrusions can engage under bearing pads 151 but not under wire or rod 150.
  • the dish rack 141 can be raised and then turned to engage the bearing pads over the protrusions, the entire dish rack then being suspended from casing 27 via protrusions 152. It is thus possible to easily raise the dish rack, and maintain the same in raised position, in order to provide ready access to the lower portion of the dishwasher for cleaning purposes, as will be evident from FIG. 8.
  • Dish rack 141 is generally circular and includes an upper section 153 of smaller diameter and a lower section 154 of such diameter as to have its periphery near the vertical wall of housing 10, the two sections being connected by upwardly and inwardly slanting, widely spaced, straight intermediate lengths of plastic covered wire or rod 155.
  • Upper portion 153 comprises relatively tall, more or less upright projections 156 and is adapted to support plates and the like in the fashion seen in FIG. 5.
  • Lower portion 154 comprises a flat portion 157 and a portion equipped with relatively short, sloping supports 158, so that smaller dishes, cups, saucers, etc., can be supported on this section in the manner seen in FIG. 5.
  • a silverware basket 159 can also be employed.
  • the entire rack structure is of metal wire or rod covered with plastic.
  • dependent casing 27 is of such length, and dish rack 141 of such height, that circularly extending wire or rod 150 embraces the casing both when the rack is raised and when it is lowered.
  • the casing not only acts as means from which the rack can be suspended, when in raised position, but also as means for positioning and stabilizing the rack when the same is in its lower position, during operation of the dishwasher.
  • all of the spray pipes 125-129 include a lower, horizontal portion extending along bottom wall to points adjacent the vertical wall of the housing.
  • Spray pipe 125 terminates at such point and is provided with spaced discharge orifices directed toward the top of the dishwasher.
  • liquid discharged from spray pipe 125 impinges on the contents of the dish rack a from below.
  • Spray pipes 126-129 have upright portions extending beside the vertical wall of the housing, pipe 129 terminating in a portion 129 FIG. 1, extending horizontally below and adjacent to top wall 14 in an area not traversed by top wall 24 of door 22.
  • Discharge ori fices of portion 129 are directed downward to impinge upon the contents of the dish rack from above, Spray pipe 126 extends upward for approximately half the height of the dishwasher, pipe 127 for about three quarters of the height, and pipe 128 for substantially the full height.
  • Spray pipe 12-6 has discharge orifices distributed along a portion thereof extending from the tip downward for about three quarters of the total upright length.
  • Spray pipe 127 has discharge orifices distributed along a portion thereof starting at the tip of pipe 126 and extending to the tip of pipe 127.
  • the spaced discharge orifice of pipe 128 extends from a point at the tip of pipe 126 to the tip of pipe 128.
  • Pipe 129 has its discharge orifices restricted to upper horizontal portion 129*. All of the discharge orifices are directed toward the dish rack.
  • distributor valve means is effective to connect the output of pump 89 first to pipe 125, so that the first spray is from below, then to pipes 126, 127, 128 and 129 in succession, the final spray thus being from above.
  • Each pipe receives the full output of the pipe and, since each pipe contains only a relatively small number of discharge orifices, the pressure and rinsing force of each jet of liquid is unusually strong, considering the relatively small amount of water used, and an effective cleaning of the dishes is thus attained eificiently and economically.
  • the pump inlet and the discharge end of supply conduit 45 are disposed below a filter element 160, FIGS. 1 and 8, of circular sheet form having a central opening embracing the pump body and extending outward into engagement with side wall 42 of sump casing 41.
  • Adjacent valve seat 56, however, filter element is bent downward along a line 161 extending chordwise of casing 41 so that, at this point, its outer edge lies below the discharge opening into pipe coupling 57, as will be clear from FIG. 19.
  • sump casing 41 is separated into an inlet portion and an outlet portion, so that particles removed from the dishes during washing cannot be carried into the pump.
  • the pump and transmission unit is enclosed by a housing 162 of inverted cup shape, the top wall of the housing extending beneath friction disc 1-15 and the cylindrical wall extending below filter element 160. Hence, all of the wash and rinse liquid must flow to the sump via the filter element without contacting the pump and transmission parts.
  • the casing 27 depends from the top wall of housing 10 and the pump 89 is supported by the bottom wall 15 and that the upright drive shaft 84 extends between them.
  • the casing 27, pump 89, reduction gearing which is centrally disposed in the housing above the pump 89, and dish rack support 142 which is positioned above the reduction gearing, are generally in vertical alignment with one another.
  • the housing 10 and depending casing 27 define a first annular space extending downward from the top wall of the housing to the bottom of the casing 27.
  • the vertical height of a second space extending downward from the bottom of the depending casing 27 to the rotatable part 142 upon which the dish rack 141 is supported comprises at least a third of the overall height of the housing.
  • the dishwasher can be supported by feet 16 directly on a work table or counter adjacent a sink or the like.
  • the feet 16 can be engaged with a tubular frame 163 attached at 164 to a wall of the room in which the device is to be employed.
  • the cable 78 is connected by plug or permanent connection to the usual electrical outlet, the machine preferably being grounded in any suitable fashion.
  • l-ivery hose 47 is connected to a water faucet or other source of Washing liquid under pressure.
  • Discharge hose 65 is connected to the sink or other receiver.
  • Lever 61 is operated to close the discharge valve.
  • Door 22 is opened, the dishes to be washed are placed in rack 141, the rack being rotated for ease of operation, and the door then closed, freeing switch actuator 79.
  • Motor 72 is now energized to operate pump 89 and distributor valve means 132 and to rotate the dish rack.
  • the faucet is then opened to supply water until the level reaches the top of overflow pipe 68 and begins to flow through hose 65, the faucet then being closed.
  • the water delivered by the pump is sprayed onto the contents of the dish rack by pipes 125-129, drains into sump casing via filter element 160 and is recirculated for so long as the motor remains energized.
  • lever 61 is pivoted to open the discharge valve, and the water is allowed to drain via hose 65.
  • Such cycle of operation is repeated as desired, with or without introduction of detergent via opening 37.
  • one cycle is carried out without detergent, to remove the coarsest particles from the dishes, the cycle is then repeated with detergent, and then repeated again as a rinse cycle without detergent.
  • Door 22 is then opened, locking the motor switch means in off position, hose '47 is stored by attaching the free end thereof to housing by means of suction cup 50, and the apparatus allowed to stand until the dishes are dry. If desired, drying can be accelerated by closing door 22 and operating motor 72 so that fan 83 forces air, warmed by the motor, down tube 85 into the dishwasher.
  • the embodiment of the invention shown has the particular advantage that it allows effective pre-flushing and rinsing of the dishes, etc., to be carried out while fresh water is being continuously supplied to sump casing 41 at a relatively small flow rate, so that only a relatively small amount of hot water from the faucet is consumed. If movable valve element 60 is left in open position and Water is supplied continuously from the faucet to the sump, via inlet pipe 45, an equilibrium condition is quickly reached in which the inflow to the sump and the outflow via the lateral opening aflorded by valve seat 56 are equal.
  • the foregoing advantage is realized by providing the sump 41, which is relatively small compared to the size of the housing 10, to hold a body of liquid which is utilized to effect a dishwashing operation, such as prefiushing or rinsing, for example.
  • the pump 89 is mounted in the sump 41 adjacent to its bottom wall for the purpose of removing liquid therefrom and conducting the liquid under pressure to the spraying means in the housing 10. As best seen in FIGS.
  • liquid is diverted from the inlet opening 92 of the pump 89 and discharged by gravity from the sump 41 by piping 57 which provides a horizontal passage means into which liquid is initially introduced from the sump 41, the piping 57 providing a path for flowing liquid exteriorly of the sump at a level above its bottom wall.
  • the horizontal passage means provided by the piping 57 has a circular opening which constitutes a zone in the path of flow of liquid which increases in width in an upward direction from its bottom.
  • the zone which is at the vicinity of the valve seat 56 and opening 58 in piping 57, functions to allow liquid to discharge and pass from the sump 41 at a rate which increases with rise in liquid level in the sump 41; and, as explained above, the liquid level will rise in the sump 41 until the quantity of liquid discharged by gravity from the sump 41 in a given interval of time eventually equals the quantity of liquid supplied to the sump from a source of supply in the same given interval of time. Under these conditions, the liquid surface level will remain at a level above the intake of the pump 89 while the pump is in operation.
  • the gearing employed to drive the rack 141 and the distribu tor valve means 132 from the shaft 84 constitutes a speed reduction gearing.
  • shaft 84 is rotated at high speed to accomplish effective operation of the centrifugal pump 89
  • the rack rotates at a relatively slow speed
  • the distributor valve means functions to change the pump delivery from pipe to pipe at a relatively slow speed.
  • an upright housing having a top wall and a bottom wall; electrical drive motor mean having an upright power shaft; a rotary pump including an impeller disposed to rotate about an upright axis, said power shaft being connected to said impeller to drive the same; means carried by said bottom wall and defining a sump, said pump having an intake located within said sump; water supply means communicating with said sump to supply Water thereto; spray means disposed in said housing; means connecting the output of said pump to said spray means; rack means adapted to support articles to be washed; speed reduction gearing having an input and an output, said gearing being mounted above said pump and having its input connected to said power shaft; and a friction drive coupling comprising a pair of separable, horizontally disposed friction elements arranged one above the other, the lower one of said friction elements being connected to the output of said gearing for rotation thereby, the upper one of said friction, elements being fixed to said rack.
  • said rack means being supported by said coupling for rotation about an upright axis and said friction elements being maintained in frictional engagement by gravitational force applied vertically by said rack means, said friction drive being so constructed and arranged that all of the torque for driving said rack means is transmitted frictionally from the lower element to the upper element, said rack means being disposed to travel the articles carried thereby past said spray means.
  • an upright housing having a top wall and abottom wall; electrical drive motor means having an upright power shaft; a rotary pump comprising a body defining a pump chamber, and an impeller operatively arranged in said pump chamber for rotation about an upright axis, said power shaft being connected to said impeller to drive the same and extending upward from said body; means operatively arranged to supply water to theintake of said pump; speed reduction gearing mounted on said pump body, said gearing including an output gear disposed above said pump body and rotatably supported thereon with its axis of rotation coincident with the axis of rotation of said power shaft, said output gear being rotatable relative to said power shaft and the input of said speed reduction gearing being operatively connected to said power shaft below said output gear; spray means disposed in said housing; means connecting the output of said pump to said spray means; a rotatable rack adapted to support articles to be washed and to travel such articles past said spray means; a rotary
  • a washing machine of the type described, the combination of an upright housing having a top wall and a bottom wall and an upstanding side wall therebetween, rotary pump means supported by said bottom wall and centrally disposed in said housing, a casing centrally located in said housing and depending from the top Wall thereof and generally in vertical alignment with said pump means, a rotary drive shaft operatively connected to said pump means to drive the same and extending upward from said pump means through the interior of said housing into said depending casing, an electrical motor disposed within said depending casing and connected to said shaft to drive the same, rack means disposed in said housing for supporting articles to be washed, means including a rotatable part centrally disposed in said housing for supporting said rack means at a central region thereof for rotation about the longitudinal axis of said shaft, means including speed reduction gearing which is centrally disposed in said housing above said pump means and operatively connects said shaft to said rotatable part to rotate said rack means, said rotatable part being disposed above said speed reduction gearing and generally in vertical alignment there
  • a washing machine as set forth in claim which includes an upright tube connected at its upper end to said depending casing in fluid-tight relation therewith and attached at its lower end to said pump means, said drive shaft extending upward through said tube from said pump means into said depending casing.
  • a washing machine as set forth in claim 5 which includes means defining a sump carried by said bottom 12 wall, the intake of said pump means being above and adjacent to the bottom of said sump, and liquid supply means connected to supply liquid to said sump.
  • a washing machine of the type described the combination of an upright housing having a top wall and a bottom wall and an upstanding side wall there between, a rotary pump means carried by said bottom Wall, a casing depending from said top wall within said housing and generally aligned above said pump means, said housing and said casing defining an annular space extending downward from said top wall to the bottom of said casing, a rotary drive shaft operatively connected to said pump means to drive the same and extending upward from said pu-mp means through the interior of said housing into said depending casing, a rotary electrical driving motor disposed within said depending casing and connected to said shaft to drive the same, rack means disposed in said housing for supporting in said annular space articles to be washed, means supporting said rack means for rotation about the longitudinal axis of said shaft, means including speed reduction gearing disposed within said housing and operatively connecting said shaft to said rack means to rotate said rack means, spray means disposed in said housing and arranged to discharge liquid onto articles supported on said rack means, means carried by said bottom wall and
  • a washing machine as set forth in claim 8 in which said depending casing includes an upstanding cylindrical Wall and said rack means stabilizing structure includes a ring-shaped element fixed to the upwardly extending members, said element being disposed about said upstanding side wall in sliding engagement therewith to stabilize said rack 'means during its rotation.
  • a washing machine of the type described the combination of an upright housing having a top wall and a bottom wall and an upstanding side wall therebetween, a rotary pump means carried by said bottom wall, a casing depending from said top wall within said housing and generally aligned above said pump means, said housing and said casing defining an annular space extending downward from said top wall to the bottom of said casing, a rotary drive shaft operatively connected to said pump means to drive the same and extending upward from said pump means through the interior of said housing into said depending casing, a rotary electrical driving motor disposed within said depending casing and connected to said shaft to drive the same, rack means disposed in said housing for supporting in said annular space articles to be washed, means sup porting said rack means for rotation about the longitudinal axis of said shaft, means including speed reduction gearing disposed within said housing and operatively connecting said shaft to said rack means to rotate said rack means, spray means disposed in said housing and arranged to discharge liquid onto articles supported on said rack means, means carried by said bottom
  • a washing machine of the type described, the combination of a housing having a top wall and a bot tom wall; rotary pump means mounted on said bottom wall; a casing depending from said top wall and generally aligned above said pump means; a rotary drive shaft operatively connected to said pump means to drive the same and extending from said pump means upward through the interior of said housing into said dependent casing; an upright tube surrounding and spaced from said drive shaft, the upper portion of said tube being connected to said dependent casing in substantially fluid-tight relation, the lower end of said tube being mechanically connected to said pump means, the lower portion of said tube communicating with the interior of said housing; an electrical driving motor disposed in said dependent casing and connected to said shaft to drive the same; a cooling fan located in said dependent casing and driven by said motor, said fan being arranged to cause air to flow over said motor and downward through said tube; a rack disposed in said housing and adapted to support articles to be washed; means supporting said rack for rotation about the longitudinal axis of said shaft; means including speed reduction
  • a washing machine having a top wall and a bottom. wall and an upright side Wall therebetween, a hollow member depending from said top wall into the interior of said housing, said housing and said hollow member defining an annular space extending downward from said top wall to the bottom of said hollow member, rotary pump means mounted on said bottom wall, an upright drive shaft operatively connected to said pump means and extending through the interior of said housing into said hollow dependent member, a rotary electrical motor disposed within.
  • rack means disposed in said housing for supporting in said annular space articles to be washed, means mounting said rack means for rotation about the axis of said shaft, means operatively connected to said rack means to rotate the same, spray means disposed in said housing and arranged to discharge liquid against articles supported on said rack means, means carried by said bottom wall and defining a liquid supply sump opening to the interior of said housing, said pump means having an intake disposed in said sump, means connecting the output of said pump means to said spray means, said spray means including provisions for directing liquid jets inward from the side wall of said housing toward said hollow member across said annular space, and means carried by said rack means for engaging said dependent hollow member for stabilizing said rack means during its rotation.
  • a washing machine of the type described the combination of a housing having a top wall and a bottom wall, a hollow member depending from said top wall into the interior of said housing, rotary pump means mounted on said bottom wall, an upright driveshaft operatively connected to said pump means and extending through the interior of said housing into said hollow dependent member, a rotary electrical motor disposed within said hollow member and connected tosaid shaft to drive the same, a rack disposed in said housing and adapted to support articles to be washed, means mounting said rack for rotation about the "axis of saidshaft,
  • said pump means having an intake disposed in said sump, means connecting the output of said pump means to said spray means, and stabilizing means carried by said rack and engaging said dependent hollow member, said hollow member having a cylindrical side wall, said stabilizing means comprising an element of said rack extending horizontally and circularly and having slide bearing means engaging said cylindrical wall, said rac'k being movable between a lower operative position and an upper position exposing the lower portion of the interior of said housing for cleaning, said hollow member being provided with lateral projections of such length as to engage beneath said slide bearing means to support said rack in said upper position.
  • a washing machine of the type described, the combination of a housing having a top wall and a'bottom wall; rotary pump means mounted on said bottom wall and including a pump body, an impeller and a power shaft; a bearing member carried by said pumpbody on the top thereof and having a vertical bearing axis; speed reduction gearing having an input member operativelyconnected with said shaft for rotation thereby and a rotary output member journaled on said bear ing member for rotation about said axis; a rack disposed in said housing and adapted to support articles 'to be washed; a drive coupling arranged to support and drive said rack, said coupling comprising a plurality ofv separableparts provided with cooperating, horizontally disposed clutch faces, one of said parts being se cured to said rack and another of said parts resting on said output member and operatively connected to said output member for rotation thereby, the weight of said rack and its contents being eifective to maintain said clutch faces in engagement and said rack being free to be raised to an elevated position in-
  • a washing machine in accordance with claim 14 and further comprising means defining a sump chamber into which the inlet of said pump means opens, said sump chamber being provided with inlet and outlet openings; a casing enclosing said pump means and gearing, said sump chamber being open to receive liquid discharged by said spray means and draining from said rack, said casing being effective to shield said gearing from such liquid, and a filter element disposed efiectively between a portion of said sump chamber including said pump inlet and the inlet opening of said chamber but allowing liquid to flow from the interior of said housing directly into the outlet opening of said pump chamber.
  • a washing machine in accordance with claim 14 and further comprising means defining a sump chamber open to the interior of said housing and with which the inlet of said pump means communicates, said sump chamber having inlet and outlet openings; overflow means disposed to receive liquid when the same reaches a predetermined level in said housing; a single drain conduit connected in parallel to said overflow means and said outlet opening, and means including a valve for controlling flow of liquid through said outlet opening to said drain conduit.
  • a dishwasln'ng machine of the character described the combination of an upright housing having a bottom opening, means carried by said housing defining a sump to hold a body of liquid utilized to efiect a dishwashing operation while liquid flows continuously through the-machine, said sump being relatively small compared to the size of said housing and having a side wall and a bottom wall and communicating with the interior of said housing through the bottom opening, means connected to said machine for supplying liquid to said sump from a source of supply, means including a pump for taking up liquid from said sump to eifect a dishwashing operation, said pump being mounted with its intake disposed in said sump at a region which is adjacent to the bottom wall thereof, means for discharging liquid from said sump by gravity in a path of flow which diverts liquid from the intake of said pump, said liquid discharge means including substantially horizontal passage means into which liquid is initially introduced from said sump, said horizontal passage means providing said path for flowing liquid exteriorly of said sump, said path of flow having at least a
  • a dishwashing machine of the character described, the combination of an upright housing having a bottom opening, means carried by said housing defining a sump to hold a body of liquid utilized to effect a dishwashing operation while liquid flows continuously through the machine, said sump being relatively small compared to the size of said housing and having a side wall and a bottom wall and communicating with the interior of said housing through the bottom opening, means connected to said machine for supplying liquid to said sump from a source of supply, means including a pump for taking up liquid from said sump to effect a dishwashing operation, said pump being mounted with its intake disposed in said sump at a region which is adjacent to the bottom wall thereof, means for discharging liquid from said sump by gravity in a path of flow which diverts liquid from the intake of said pump, said liquid discharge means including substantially horizontal passage means into which liquid is initially introduced from said sump, said horizontal passage means providing said path for flowing liquid exteriorly of said sump, said path of flow having at least a part thereof at a level above the bottom wall of said
  • an upright housing having a bottom wall provided with a central opening; means carried by said bottom wall and depending therefrom to define a shallow sump communicating with the interior of said housing via said opening; a pump enclosed by said housing and sump and disposed with its intake adjacent the bottom of said sump, said sump being provided with a discharge opening for flowing liquid therefrom by gravity and an intake opening; supply conduit means connected to said intake opening, said discharge and intake openings being so located and dimensioned that supply of liquid to said sump via said intake opening at a given rate will maintain a liquid level above the intake of said pump when said pump is in operation; a rack disposed in said housing and adapted to support articles to be Washed; spray means arranged in said housing to discharge liquid onto articles supported by said rack; means connecting the output of said pump to said spray means; and a drive motor carried by said housing and connected to drive said pump, said housing being provided at its bottom with drain means independent of and laterally removed from said central opening for draining liquid by gravity from the interior
US79501259 1958-02-21 1959-02-24 Dishwashing machine Expired - Lifetime US3060946A (en)

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SE172258 1958-03-17
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US13464761 Expired - Lifetime US3060947A (en) 1958-02-21 1961-08-29 Dishwashing machine
US14287461 Expired - Lifetime US3060948A (en) 1958-02-21 1961-10-04 Dishwashing machine

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US (3) US3060946A (fr)
BE (2) BE575838A (fr)
CH (2) CH374157A (fr)
DE (4) DE1628459B2 (fr)
FR (2) FR1216889A (fr)
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NL (2) NL110337C (fr)

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US3114375A (en) * 1962-01-22 1963-12-17 Frederick W Blanchard Dishwashing machine
US3134487A (en) * 1962-05-21 1964-05-26 F W Blanchard Inc Dishwashing machine
US3203436A (en) * 1963-02-25 1965-08-31 Electrolux Ab Dishwashing machine provided with control mechanism
US3394718A (en) * 1964-04-17 1968-07-30 Electrolux Ab Dish washing apparatus having improved spray means
US4143669A (en) * 1977-06-10 1979-03-13 The Mart Corporation Power parts washer
US5029595A (en) * 1988-07-27 1991-07-09 Hautau Charles M Blasting apparatus
US5640981A (en) * 1995-05-01 1997-06-24 Cuda Corporation Parts washer
US20030168087A1 (en) * 2000-02-14 2003-09-11 Hiroaki Inui Washing machine
US20100043825A1 (en) * 2008-08-19 2010-02-25 Whirlpool Corporation Sequencing diverter valve system for an appliance
EP2457488A1 (fr) * 2010-11-26 2012-05-30 Electrolux Home Products Corporation N.V. Lave-vaisselle à plateau
US10174785B1 (en) 2017-11-15 2019-01-08 Electrolux Home Products, Inc. Wheel bushing
CN110573053A (zh) * 2017-06-19 2019-12-13 松下知识产权经营株式会社 餐具清洗机
EP3967207A1 (fr) * 2020-09-14 2022-03-16 Electrolux Professional S.p.A. Lave-vaisselle
US11344177B2 (en) 2019-02-11 2022-05-31 Deeay Technologies Ltd. Spray assembly and replaceable detergent container for dishwasher
WO2023277427A1 (fr) * 2021-07-02 2023-01-05 삼성전자주식회사 Lave-vaisselle et procédé de commande associé

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US3319651A (en) * 1963-12-10 1967-05-16 Mullins Mfg Corp Dishwasher water circulation mechanism
CH654195A5 (fr) * 1983-06-30 1986-02-14 Daniel Roulin Dispositif de lavage pour cuilleres a glace.
GB2192126A (en) * 1986-07-02 1988-01-06 Ho Mei Liu Dishwasher
ES2137062B1 (es) * 1995-05-29 2000-08-16 Ahmed Gumaa Bushara Lavavajillas ecologico.

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US1603259A (en) * 1921-12-19 1926-10-12 Wilfred B Mathewson Dishwashing machine
US1703946A (en) * 1927-08-04 1929-03-05 Thomas G Melish Dishwasher
US1794169A (en) * 1927-11-21 1931-02-24 Greene Edgeworth Apparatus for dishwashing
US1939630A (en) * 1931-01-14 1933-12-12 Eric Osterberg Dishwashing machine
US2054797A (en) * 1933-02-06 1936-09-22 Ray W Franklin Washing machine
US2562076A (en) * 1946-02-05 1951-07-24 Weisselberg Arnold Dishwashing machine with impeller coaxial with jet actuated rotary basket
US2645235A (en) * 1947-09-29 1953-07-14 Edwin F Wheeler Automatic domestic dishwasher
US2634736A (en) * 1947-11-14 1953-04-14 Edward M Bewen Dishwashing machine
US2652844A (en) * 1948-12-09 1953-09-22 Lester E Van Hise Dishwasher
US2678050A (en) * 1948-12-17 1954-05-11 Walter I Knapp Portable dishwashing machine
US2681658A (en) * 1949-10-11 1954-06-22 Hobart Mfg Co Dishwasher
US2751917A (en) * 1952-01-04 1956-06-26 Gen Electric Dishwashing machine

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US3114375A (en) * 1962-01-22 1963-12-17 Frederick W Blanchard Dishwashing machine
US3134487A (en) * 1962-05-21 1964-05-26 F W Blanchard Inc Dishwashing machine
US3203436A (en) * 1963-02-25 1965-08-31 Electrolux Ab Dishwashing machine provided with control mechanism
US3394718A (en) * 1964-04-17 1968-07-30 Electrolux Ab Dish washing apparatus having improved spray means
DE1301451B (de) * 1964-04-17 1969-08-21 Electrolux Ab Sprueheinrichtung bei Geschirrspuelmaschinen
US4143669A (en) * 1977-06-10 1979-03-13 The Mart Corporation Power parts washer
US5029595A (en) * 1988-07-27 1991-07-09 Hautau Charles M Blasting apparatus
US5640981A (en) * 1995-05-01 1997-06-24 Cuda Corporation Parts washer
US20030168087A1 (en) * 2000-02-14 2003-09-11 Hiroaki Inui Washing machine
US7270132B2 (en) * 2000-02-14 2007-09-18 Matsushita Electric Industrial Co., Ltd. Washer
US20100043825A1 (en) * 2008-08-19 2010-02-25 Whirlpool Corporation Sequencing diverter valve system for an appliance
US7914625B2 (en) * 2008-08-19 2011-03-29 Whirlpool Corporation Sequencing diverter valve system for an appliance
EP2457488A1 (fr) * 2010-11-26 2012-05-30 Electrolux Home Products Corporation N.V. Lave-vaisselle à plateau
WO2012069227A1 (fr) * 2010-11-26 2012-05-31 Electrolux Home Products Corporation N.V. Lave-vaisselle posé sur un plan de travail
RU2567354C2 (ru) * 2010-11-26 2015-11-10 Электролюкс Хоум Продактс Корпорейшн Н.В. Настольная посудомоечная машина
US9392927B2 (en) 2010-11-26 2016-07-19 Electrolux Home Products Corporation N.V. Table top dishwasher
CN110573053A (zh) * 2017-06-19 2019-12-13 松下知识产权经营株式会社 餐具清洗机
CN110573053B (zh) * 2017-06-19 2022-07-22 松下知识产权经营株式会社 餐具清洗机
US10174785B1 (en) 2017-11-15 2019-01-08 Electrolux Home Products, Inc. Wheel bushing
US11344177B2 (en) 2019-02-11 2022-05-31 Deeay Technologies Ltd. Spray assembly and replaceable detergent container for dishwasher
EP3967207A1 (fr) * 2020-09-14 2022-03-16 Electrolux Professional S.p.A. Lave-vaisselle
WO2023277427A1 (fr) * 2021-07-02 2023-01-05 삼성전자주식회사 Lave-vaisselle et procédé de commande associé

Also Published As

Publication number Publication date
US3060947A (en) 1962-10-30
GB918412A (en) 1963-02-13
DE1403624A1 (de) 1968-10-17
BE607977R (fr) 1962-01-02
GB918413A (en) 1963-02-13
DE1628459B2 (de) 1971-11-04
FR80300E (fr) 1963-04-05
DE1628459A1 (de) 1970-06-04
GB983305A (en) 1965-02-17
BE575838A (fr) 1959-06-15
FR1216889A (fr) 1960-04-28
NL267705A (fr) 1900-01-01
NL110337C (fr) 1964-12-15
US3060948A (en) 1962-10-30
DE1403118A1 (de) 1968-10-03
CH374157A (de) 1963-12-31
CH382389A (de) 1964-09-30
DE1428320A1 (de) 1968-12-12

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