Abstract:
A wash arm arrangement (100) for a dishwasher is disclosed. The wash arm arrangement comprises a central arm (121) adapted to be rotatably connected with a first liquid supply shaft (123) for providing pressurized liquid during operation of the dishwasher. The central arm has a first nozzle (130) arranged for outputting a jet of liquid during operation thereby providing a first reaction force F c for rotating the central arm about its axis of rotation in a first direction. The wash arm arrangement further comprises a satellite arm (122) rotatably arranged on a second liquid supply shaft (124) arranged on an outer end of the central arm, the satellite arm having a second nozzle (131) arranged for outputting a jet of liquid during operation thereby providing a second reaction force F s for rotating the satellite arm about its axis of rotation in a second direction being opposite to the first direction. The first and second nozzles are arranged such that the central arm is controlled to move with a periodically alternating speed due to the first and second reaction forces acting on the central arm wherein the instantaneous value of a resulting momentum M tot for the central arm about its axis alters periodically during operation, comprising a first momentum M c of the central arm caused by a horizontal reaction force portion F cy of the first reaction force F c , and a second momentum M s of the central arm, caused by the movement of the satellite arm and comprising a momentum created by a horizontal reaction force portion F sy of the second reaction force F s, .
Abstract:
A wash arm arrangement (100) for a dishwasher is disclosed. The wash arm arrangement comprises a central arm (121) adapted to be rotatably connected with a first liquid supply shaft (123) for providing pressurized liquid during operation of the dishwasher. The central arm has a first nozzle (130) arranged for outputting a jet of liquid during operation thereby providing a first reaction force Fc for rotating the central arm about its axis of rotation in a first direction. The wash arm arrangement further comprises a satellite arm (122) rotatably arranged on a second liquid supply shaft (124) arranged on an outer end of the central arm, the satellite arm having a second nozzle (131) arranged for outputting a jet of liquid during operation thereby providing a second reaction force Fs for rotating the satellite arm about its axis of rotation in a second direction being opposite to the first direction. The first and second nozzles are arranged such that the central arm is controlled to move with a periodically alternating speed due to the first and second reaction forces acting on the central arm wherein the instantaneous value of a resulting momentum Mtot for the central arm about its axis alters periodically during operation, comprising a first momentum Mc of the central arm caused by a horizontal reaction force portion Fcy of the first reaction force Fc, and a second momentum Ms of the central arm, caused by the movement of the satellite arm and comprising a momentum created by a horizontal reaction force portion Fsy of the second reaction force Fs,.
Abstract:
There is provided a dishwasher comprising a pump for imparting to a liquid pressure to thereby generate liquid under pressure, a compartment, and at least one spray arm 20 extending in a direction of an arm axis A. The spray arm 20 is rotatable by means of the liquid under pressure and is provided with a nozzle 36 for distributing, at least partially, the liquid in the compartment, and a control opening 34 for interaction with the nozzle 36. The spray arm 20 comprises a fixed tube 30 extending in a direction of the arm axis A and a movable tube 32. One of the fixed and movable tubes is provided with the nozzle and an other of the fixed and movable tubes is provided with the control opening. The fixed and movable tubes are arranged one at least partially within the other. The dishwasher comprises a driving arrangement for rotating the movable tube substantially around the arm axis A to cause the control opening 34 to interact with the nozzle 36, and the driving arrangement is driven by means of the liquid under pressure.
Abstract:
According to embodiments of the present invention, a dishwasher may provide an intensified wash effect. The dishwasher may include a rack defining a bottom and a sidewall, wherein the rack is adapted to receive dishware therein. A dishwashing fluid supply channel may be configured to supply dishwashing fluid to a spray assembly. The spray assembly may comprise at least one nozzle member. Thereby, the spray assembly may be adapted to receive the dishwashing fluid from the dishwashing fluid supply channel and to dispense the dishwashing fluid therethrough. The spray assembly may be coupled to the sidewall of the rack. Further, the nozzle member may be attached to an arm which is moveable between at least a first position wherein the arm is adjacent the sidewall of the rack and a second position wherein the arm is adjacent the bottom of the rack.
Abstract:
The invention relates to a method for operating a washer which comprises a washing chamber for accommodating goods to be cleaned, said washing chamber having in its lower portion a sump for collecting water during operation of the washer, a water inlet connected to a water tank, preferably to a water tank that is integrally, still preferably detachably, formed with the dishwasher, a pump for circulating water through the washing chamber, and a control unit for controlling a washing process carried out by the washer. In accordance with a first embodiment of the method of the invention, in this method: water is fed from the tank into the sump by the action of the hydrostatic pressure prevailing within the tank; the pressure within the sump or close to the sump is measured; and based on the pressure measurement the speed of the water flow is monitored and the filling level of the tank is determined, and at least one parameter and/or step of the washing process is controlled and/or indicator signals are issued to a user of the washer.
Abstract:
The invention relates to a dishwasher comprising a cabinet (1, 2), a door (3; 13, 14) located in the cabinet for allowing access to the inside of the cabinet, and a water tank (9) to be filled with water for washing. According to the invention, the water tank (9) is positioned within the cabinet (1, 2).
Abstract:
A wash arm arrangement (20) for a dishwasher is disclosed which has a central arm (21) adapted to be rotatably connected with a first shaft (23) through which liquid under pressure is fed into said central arm during operation. A satellite arm (22) is rotatably connected with a second shaft (24) arranged on the central arm, and which is arranged separated a first radial distance r cs from the axis of rotation of the central arm. The second shaft supplies liquid to the satellite arm during operation. To provide the liquid to a washing area of the dishwasher, the satellite arm comprises at least one outer nozzle (25) for providing liquid to a washing area of the dishwasher. The centre of the outer nozzle is arranged at a second radial distance r n with respect to the axis of rotation for the satellite arm which is at least equal to the first radial distance r cs minus half the width of the nozzle in a radial direction, and at most equal to the first radial distance r cs plus half the width of the nozzle in a radial direction. Thereby, an alternative and improved wash arm arrangement which has a high coverage of the washing area is achieved.
Abstract:
The invention relates to methods for operating a washer, and in preferred embodiments to a washer having a water tank that is integrally, preferably detachably, formed with the washer, wherein the washer comprises a washing chamber for accommodating goods to be cleaned, said washing chamber having in its lower portion a sump for collecting water during operation of the washer, a water inlet, a circulating pump for circulating water through the washing chamber, and a control unit for controlling a washing cycle carried out by the washer. In accordance with the invention, in this method water is fed via the water inlet into the sump; the pressure within an inlet or outlet conduit of the circulating pump is measured; and based on the pressure measurement the washing cycle is controlled and/or indicator signals are issued to a user of the washer.
Abstract:
The invention relates to methods for operating a washer, and in preferred embodiments to a washer having a water tank that is integrally, preferably detachably, formed with the washer, wherein the washer comprises a washing chamber for accommodating goods to be cleaned, said washing chamber having in its lower portion a sump for collecting water during operation of the washer, a water inlet, a circulating pump for circulating water through the washing chamber, and a control unit for controlling a washing cycle carried out by the washer. In accordance with the invention, in this method water is fed via the water inlet into the sump; the pressure within an inlet or outlet conduit of the circulating pump is measured; and based on the pressure measurement the washing cycle is controlled and/or indicator signals are issued to a user of the washer.
Abstract:
The present invention relates to a dishwasher. The dishwasher (10) comprises a washing chamber (11) and a water filtering system arranged in the lower part of the washing chamber (11). The water filtering system comprises a filter (20) and a central filter unit (30) that are removable arranged in said washing chamber (11). The filter (20) has a substantially flat shape and is supported around its outer periphery (21 ) by a contact surface (22) of a recess (24) in the lower part of the washing chamber (11) and is secured in the washing chamber by the central filter unit (30). The unit (30) is arranged in an opening (31) in the filter (20) and comprises a surface (35) that is pressing on the inner periphery (36) of the opening (31) in the filter (20) to secure the filter (20) in the intended position. The outer periphery (21) of the filter (20) or said contact surface (22) of the recess (24), and said surface (35) of the central filter unit (30) or the inner periphery (36) of the filter (20) extending around the opening (31) are covered by a layer (25; 39) of elastic material.