EP3102084B1 - Lave-vaisselle, ensemble porte pour lave-vaisselle, et procédé associé de séchage de vaisselle - Google Patents

Lave-vaisselle, ensemble porte pour lave-vaisselle, et procédé associé de séchage de vaisselle Download PDF

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Publication number
EP3102084B1
EP3102084B1 EP14789698.9A EP14789698A EP3102084B1 EP 3102084 B1 EP3102084 B1 EP 3102084B1 EP 14789698 A EP14789698 A EP 14789698A EP 3102084 B1 EP3102084 B1 EP 3102084B1
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EP
European Patent Office
Prior art keywords
duct
blower
vaporized water
dishwasher
actuating
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP14789698.9A
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German (de)
English (en)
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EP3102084A1 (fr
Inventor
Ashwin Jadhav
Dennis A. Poyner
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Electrolux Home Products Inc
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Electrolux Home Products Inc
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Publication date
Application filed by Electrolux Home Products Inc filed Critical Electrolux Home Products Inc
Priority to PL14789698T priority Critical patent/PL3102084T3/pl
Publication of EP3102084A1 publication Critical patent/EP3102084A1/fr
Application granted granted Critical
Publication of EP3102084B1 publication Critical patent/EP3102084B1/fr
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Classifications

    • 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
    • A47L15/48—Drying arrangements
    • A47L15/483—Drying arrangements by using condensers
    • 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
    • A47L15/0018—Controlling processes, i.e. processes to control the operation of the machine characterised by the purpose or target of the control
    • A47L15/0021—Regulation of operational steps within the washing processes, e.g. optimisation or improvement of operational steps depending from the detergent nature or from the condition of the crockery
    • A47L15/0034—Drying phases, including dripping-off phases
    • 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
    • A47L15/4251—Details of the casing
    • A47L15/4257—Details of the loading door
    • 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
    • A47L15/48—Drying arrangements
    • A47L15/488—Connections of the tub with the ambient air, e.g. air intake or venting arrangements
    • 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
    • A47L2401/00—Automatic detection in controlling methods of washing or rinsing machines for crockery or tableware, e.g. information provided by sensors entered into controlling devices
    • A47L2401/04—Crockery or tableware details, e.g. material, quantity, condition
    • 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
    • A47L2401/00—Automatic detection in controlling methods of washing or rinsing machines for crockery or tableware, e.g. information provided by sensors entered into controlling devices
    • A47L2401/10—Water cloudiness or dirtiness, e.g. turbidity, foaming or level of bacteria
    • 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
    • A47L2401/00—Automatic detection in controlling methods of washing or rinsing machines for crockery or tableware, e.g. information provided by sensors entered into controlling devices
    • A47L2401/19—Air humidity
    • 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
    • A47L2401/00—Automatic detection in controlling methods of washing or rinsing machines for crockery or tableware, e.g. information provided by sensors entered into controlling devices
    • A47L2401/20—Time, e.g. elapsed operating time
    • 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
    • A47L2501/00—Output in controlling method of washing or rinsing machines for crockery or tableware, i.e. quantities or components controlled, or actions performed by the controlling device executing the controlling method
    • A47L2501/06—Water heaters
    • 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
    • A47L2501/00—Output in controlling method of washing or rinsing machines for crockery or tableware, i.e. quantities or components controlled, or actions performed by the controlling device executing the controlling method
    • A47L2501/11—Air heaters
    • 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
    • A47L2501/00—Output in controlling method of washing or rinsing machines for crockery or tableware, i.e. quantities or components controlled, or actions performed by the controlling device executing the controlling method
    • A47L2501/12—Air blowers

Definitions

  • the present invention generally relates to dishwashers and, more particularly, to drying systems of dishwashers and associated methods thereto.
  • a dishwasher typically employs a series of cycles for cleaning dishware disposed within a tub portion of the dishwasher.
  • One particular cycle, a drying cycle is normally reserved as the final step in the cleaning process, the drying cycle is used to remove residual water from the dishware after the wash and rinse cycles are complete.
  • Dishware is typically stacked vertically in upper and lower dish racks within the tub portion such that a substantial amount of the water used during a wash/rinse cycle runs off the dishware toward the bottom of the tub portion for collection in a sump. By such stacking, the amount of water collecting on the dishware is reduced or minimized (i.e., water is less likely to collect in the bowls, plates, cups, etc.).
  • the dishwasher typically includes a heat source to warm the air that is forced into and circulated within the tub portion, wherein the heated air absorbs the residual water remaining on the dishware, resulting in humid air/moisture stagnating within the dishwasher to a point of saturation.
  • a humidity sensor measures a threshold level
  • the humid air is evacuated from within the tub portion, and the heat source again generates heated air to further dry the dishware, typically until the humidity sensor measures a predetermined moisture level signaling that further drying is not required.
  • US 2010/192977 A1 discloses a dishwasher with a door assembly including a duct configured to receive moisture laden air created during a drying cycle, and to encourage condensation of water from the air such that the water may be redirected back to a tub portion of the dishwasher, and the dry air may be directed out of the dishwasher.
  • an improved drying system for a dishwasher and associated method may be desirable.
  • Embodiments of the present invention address the above by providing a method of drying dishware in a tub portion of a dishwasher, a dishwasher, and a door assembly for a dishwasher.
  • a method of drying dishware in a tub portion of a dishwasher is provided.
  • the dishwasher comprises a tub defining an opening and an interior, a door attached to the tub and configured to selectively permit access to the interior of the tub, a duct positioned within the door and having an inlet that is in fluid communication with the interior of the tub, and a blower in fluid communication with the duct and the tub.
  • the method includes initiating operation of a blower during a drying cycle of the dishwasher, actuating the blower during a drying cycle to draw at least one of warm air and vaporized water from the tub into the duct to facilitate condensation of the vaporized water as the warm air and vaporized water travel through the duct, and reversing direction of operation of the blower at least once during the drying cycle.
  • the duct defines a tortuous path to enhance condensation of the vaporized water.
  • the duct may define an outlet in fluid communication with an external environment, such that reversing the direction of the operation of the blower draws ambient air from the external environment into the duct via the outlet to interact with the vaporized water within the duct to accelerate the condensation of the vaporized water.
  • the ambient air from the external environment is drawn into the outlet of the duct by the same blower configured to draw the warm air and vaporized water into the inlet of the duct.
  • actuating the blower includes cyclically actuating the blower.
  • a dishwasher in another embodiment, may include a tub defining an opening and an interior, a door attached to the tub and configured to selectively permit access to the interior of the tub; a duct positioned within the door and having an inlet that is in fluid communication with the interior of the tub, and a blower configured to direct the warm air and vaporized water into the duct during a drying cycle of the dishwasher.
  • the blower may be further configured to reverse direction of operation during the drying cycle.
  • the duct extends from the inlet to an outlet and is configured to facilitate condensation of the vaporized water as the warm air and vaporized water travel from the inlet toward the outlet.
  • the outlet may be in fluid communication with an external environment such that reversing the direction of operation of the blower draws ambient air from the external environment into the duct via the outlet to interact with the vaporized water within the duct to accelerate the condensation of the vaporized water.
  • the ambient air from the external environment is drawn into the outlet of the duct by the same blower configured to draw the warm air and vaporized water into the inlet of the duct.
  • the blower is configured to by cyclically actuated.
  • Cyclically actuating the blower may comprise alternating between actuating the blower in a direction wherein the warm air and vaporized water are directed into the inlet of the duct and actuating the blower in a reversed direction of operation wherein ambient air from the external environment is drawn into the duct via the outlet to interact with the vaporized water within the duct to accelerate the condensation of the vaporized water.
  • the door assembly may include an inner wall, an outer wall, a duct extending between the inner wall and the outer wall from on inlet to an outlet, and a blower configured to draw warm air and vaporized water into the inlet of the duct from the tub during a drying cycle of the dishwasher.
  • the duct may at least partially define a tortuous path that is configured to facilitate condensation of vaporized water from warm air as the warm air and vaporized water are directed through the duct from the inlet toward the outlet.
  • the blower may be configured to reverse direction of operation during the drying cycle.
  • the outlet is in fluid communication with an external environment such that reversing the direction of operation of the blower draws ambient air from the external environment into the duct via the outlet to interact with the vaporized water within the duct to accelerate the condensation of the vaporized water.
  • the ambient air from the external environment is drawn into the outlet of the duct by the same blower configured to draw the warm air and vaporized water into the inlet of the duct.
  • the blower is configured to be cyclically actuated.
  • cyclically actuating the blower includes alternating between actuating the blower in a direction wherein the warm air and vaporized water are directed into the inlet of the duct and actuating the blower in a reversed direction of operation wherein ambient air from the external environment is drawn into the duct via the outlet to interact with the vaporized water within the duct to accelerate the condensation of the vaporized water.
  • FIG. 1 illustrates an example of a dishwasher 10 that may benefit from various embodiments of the present invention.
  • the dishwasher 10 may include a tub portion 12 (partly broken away in Figure 1 to show internal details) having a door assembly 50 and a plurality of walls 13 that together form an enclosure in which dishes, utensils, and other dishware may be placed for washing.
  • the tub portion 12 may also define a forward access opening, generally designated as 16.
  • the dishwasher 10 may also include slidable lower and upper racks (not shown) for holding the dishes, utensils, and other dishware to be washed.
  • the tub portion 12 may define a sump, generally designated as 14, in which wash water or rinse water is collected, typically under the influence of gravity.
  • the wash/rinse water may be pumped by a pump 15 out of the sump 14 to various spray arms 20 mounted in the interior of the tub portion 12 for spraying the wash/rinse water, under pressure, onto the dishes, utensils, and other dishware contained therein.
  • the pump 15 and/or other operational components e.g., circulation pump, drain pump, water valve
  • the base portion 22 may be a separate component with respect to the tub portion 12, such as, for example, a molded polymer component, while in other instances the base portion 22 may be integral with the tub portion 12 such that the side walls forming the tub portion 12 also at least partially form the base portion 22.
  • the door assembly 50 may be pivotably engaged with the tub portion 12 about the lower end 18 thereof so as to selectively permit access to the interior of the tub portion 12. That is, a lower edge 26 of the door assembly 50 may be pivotably engaged (e.g., hinged) with the lower end 18 of the tub portion 12 such that the door assembly 50 is pivotable about the lower edge 26 thereof to cover and seal the forward access opening 16 in a closed position when the dishwasher 10 is in operation, and to provide access to the interior of the tub portion 12 through the forward access opening 16 when the door assembly 50 is pivoted from the closed position to an opened position.
  • the door assembly 50 may comprise an inner wall 60 and an outer wall 70.
  • the door assembly 50 may include a handle member 24 disposed on an outer surface 72 of the outer wall 70, to provide the user with a grasping portion.
  • Embodiments of the present invention generally relate to a drying system of the dishwasher configured to help remove moisture from the dishwasher during a drying cycle so as to help dry the dishware disposed in the tub portion.
  • the drying system may be generally disposed within the door assembly of the dishwasher.
  • the drying system 200 may include a blower 210 (e.g ., a centrifugal blower) and a duct 220, both of which may be positioned in the door assembly of the dishwasher.
  • the blower 210 may positioned proximate the top of the door assembly 250 such that an inlet 212 of the blower is disposed on an interior wall or other interior portion of the door assembly 250. In such a position, the blower 210 is configured to draw or force air, such as the moist air during a drying cycle, from the tub portion toward the duct 220 inside of the door assembly 250.
  • the inlet 212 may include a plurality of louvered fins (not visible in Figures 2 through 4 ) forming a barrier to minimize water (from spray or in the form of airborne droplets) from being pulled into the blower 210.
  • the dishwasher may include a heating device or element (not visible in Figures 2 through 4 ) configured to heat the air within the tub portion. Heating the air causes the air to rise toward the upper end of the tub portion and toward the blower 210.
  • the duct 220 may extend from an inlet end 222 to an outlet end 224 in the door assembly between an inner wall and an outer wall of the door assembly.
  • the inlet end 222 of the duct may be communication with the blower 210 such that as the moist air is drawn out of the tub portion by the blower 210, the moist air is directed substantially into the inlet end 222 of the duct.
  • Figures 2 and 3 illustrate an example of the inlet end 222 being in communication with the blower 210.
  • Figure 2 illustrates the inner facing side of the interior wall of the door assembly 250 in which the inlet 212 of the blower is visible.
  • Figures 2 and 3 illustrate the outer facing side of the interior wall of the door assembly 250 with the majority of the duct 220 being visible and a portion of the inlet end 222 of the duct removed to allow the blower 210 to be visible for illustration purposes only.
  • the duct 220 may include a plurality of ribs 228 configured to interact with the air as the air is drawn in from the tub portion by the blower 210. As the air passes through the duct 220, the ribs 228 create multiple surfaces for the air to interact with so as to remove moisture from the air. As such, the moist air condenses as it navigates through the ribs 228 of the duct 220. Proximate the outlet end 224, the duct 220 may be in communication with a drain opening 226 disposed proximate the bottom of the door assembly 250.
  • the drain opening may be disposed on the interior wall or other interior portion of the door assembly 250 such that as the water condenses due to the ribs 228, the water flows through the duct 220, out of the drain opening, and into the bottom of the tub portion to be collected in the sump of the dishwasher.
  • the resultant "drier" air flowing through the duct 220 is directed to the outlet end 224 of the duct which may disposed on the outer wall or other outer portion of the door assembly 250, e.g., as illustrated in Figure 5 , such that the drier air (i.e., drier as a result from the condensation process) exits the dishwasher.
  • a blower 610 may be disposed remotely from the duct 620.
  • the blower 610 may be disposed in an upper wall 604 of the tub portion 602 and configured to draw air into the tub portion 602 from outside the dishwasher 600 .
  • these factors may combine to pressurize the air in the tub portion 602. Once pressurized the air is directed toward and into a housing 615 of the drying system.
  • the housing 615 may be positioned proximate the top of the door assembly 650 such that an inlet of the housing is disposed on an interior wall or other interior portion of the door assembly 650 and in communication with a duct 620 extending from an inlet end to an outlet end within the door assembly.
  • the housing 615 and the duct 620 may be configured to connect together.
  • Figure 10 provides an example of such a configuration in which the housing 615 includes a projection 616 configured to engage a side opening 621 of the duct and, thus, connecting the housing 615 and the duct 620 together.
  • Figure 11 provides another example of such a configuration in which the housing 1115 includes a projection 1116 configured to engage a top opening 1121 of the duct and, thus, connecting the housing 1115 and the duct 1120 together.
  • the housing 615, 1115 may include an inlet.
  • the inlet may include a plurality of louvered fins 617, 1117 forming a barrier to minimize water (from spray or in the form of airborne droplets) from being pulled into the housing 615, 1115.
  • the duct 620 may extend from an inlet end 622 to an outlet end 624 for example as illustrated in Figures 7 and 12 .
  • the duct is configured to condense the moisture from the air and direct the condensed moisture back into the tub portion and/or direct the drier air outside the dishwasher.
  • the duct may include a plurality of ribs to create multiple surfaces for the air to interact with so as to promote condensation.
  • the duct 620 may be configured to traverse or extend along a tortuous path, in the plane of the door assembly, at least partially between the inlet and outlet ends.
  • a tortuous path means that the path includes multiple bends or turns and changes in directions, e.g., as illustrated in Figures 7 and 12 . In this manner, the moisture-laden air interacts more with the walls defining the duct 620 than it would if the duct took a more linear path. This increased interaction with the walls increases the amount of moisture from the air that is condensed as the air travels through the duct 620.
  • the duct 620 may also include a drain port or opening 626, as shown in Figure 12 . More specifically, about a lowest, gravity-fed portion of the tortuous duct 620, the duct may define a drain opening or port configured to collect the condense moisture and direct the moisture back toward the bottom of the tub portion to be collected in the sump of the dishwasher.
  • the duct 620 may be further configured in a tortuous manner in a plane perpendicular to the plane of the door assembly 650, e.g., as illustrated in Figures 13 and 14 .
  • the duct 620 may further include one or more portions 628 varying from the path of the duct 620, perpendicularly to the plane of the door assembly 650. In some instances, e.g., the illustrated embodiment of Figures 13 and 14 , one such portion may be disposed on either side of the drain opening 626 defining a drain extension 628.
  • the orientation or direction of the drain extension 628 is intended to lead the water back into the tub portion 602 (e.g., in instances, where a user may spill water into the duct with the door in an open position, the orientation of the drain extension 628 is intended to lead the spill water back toward the tub portion 602 rather than outside the dishwasher).
  • the blower 210 may be positioned proximate the top of the door assembly 250 such that an inlet 212 of the blower is disposed on an interior wall or other interior portion of the door assembly 250.
  • the blower 210 may be configured to draw or force warm air and water vapor from the tub portion toward the duct 220 inside of the door assembly 250.
  • the blower 210 may be cyclically actuated or pulsed on and off.
  • the blower may be selectively activated, pulsed, or cycled rather than being constantly on during the drying cycle.
  • a single blower 210 and/or a single fan may be used to facilitate drying of the dishware within the dishwasher.
  • the blower 210 is a centrifugal blower.
  • the blower 210 when the blower 210 is actuated, warm air and water vapor may be drawn into the inlet 212 of the duct 220.
  • the water vapor may be condensed within the duct 220, and the warm dry air may exit the outlet 224 of the duct (e.g., shown in Figure 5 ).
  • the blower 210 When the blower 210 is not actuated (e.g., during the off portion of a blower cycle), ambient air from outside the dishwasher may enter the outlet 224 of the duct, such as shown in Figures 15 and 16 . This may lead to the interaction of the warm air and water vapor with the ambient air within the duct 220.
  • the ambient air may be cooler and dryer than the warm air and water vapor
  • the interaction of the ambient air with the warm air and water vapor may accelerate the condensation of the water vapor within the duct.
  • the length of the off portion of the blower cycle may be shorter, longer, or the same length as the on portion of the blower cycle.
  • the relative and/or actual lengths of the on and off portions of the blower cycle may be optimized to efficiently and/or quickly dry the dishware within the dishwasher.
  • the lengths of the on and off portions of the blower cycle may be predetermined.
  • one or more measurements of the humidity within the duct 220 and/or within the tub e.g., with a humidity sensor
  • the length of the on and/or off portions of the blower cycle may be on the order of seconds or minutes.
  • Figure 17A provides a graphic example of a blower operation pattern in a cyclic manner during a portion of a drying cycle in an example embodiment.
  • operation of the blower in a cyclic manner may include reversing the direction of the blower.
  • the direction in which the fan of the blower spins may be reversed.
  • blower operation pattern in a cyclic manner may include actuating the blower for a period of time such that warm air and water vapor from within the dishwasher is drawn into the inlet 212 of the duct 220 and then actuating the blower in a reverse direction for a period of time such that ambient air from outside of the dishwasher is drawn into the outlet 214 of the duct.
  • one blower may be used to alternatively draw warm air and water vapor from inside the dishwasher into the inlet 212 of the duct 220 and draw ambient air from outside the dishwasher into the outlet 214 of the duct.
  • Figure 17B provides a graphic example of a blower operation pattern in a cyclic manner during a portion of a drying cycle in another example embodiment.
  • operation of the blower in a cyclic manner my include actuating the blower in one direction for a first period of time, actuating the blower in a reversed direction for a second period of time, and then turning the blower off for a third period of time.
  • one blower and/or fan may be configured to draw warm air and vaporized water into the inlet of the duct, pause, and draw ambient air from outside the dishwasher into the outlet of the duct.
  • Figure 17C provides a graphic example of a blower operation pattern in a cyclic manner during a portion of a drying cycle in yet another example embodiment.
  • the relative and actual lengths of the first, second, and third periods of time may vary between embodiments. In some embodiments the relative and/or actual lengths of the first, second, and third time periods may be optimized to efficiently and/or quickly dry the dishware within the dishwasher. In some embodiments, one or more humidity measurements (e.g., from a humidity sensor) may be used to optimize the lengths of the first, second, and third time periods. For example, the first, second, and third time periods may be configured to efficiently dry the dishware within the dishwasher. In various embodiments, the first, second, and third time periods are configured such that the temperature within at least a portion of the duct 220 stabilizes to the temperature of the ambient air during at least a portion of the blower cycle.
  • the first, second, and third time periods may remain the same throughout the drying cycle, such as illustrated in Figure 17C .
  • the first, second and third time periods may vary during the drying cycle based on a predetermined algorithm, the measured humidity within the duct and/or tub portion of the dishwasher, and/or the like, such as illustrated in Figures 17A and 17B .
  • the illustrated blower actuation patterns are provided as examples of possible blower operation patterns.
  • Various other blower operation patterns may be used to accomplish efficient drying of the dishware within the dishwasher.
  • the blower may be turned on, then turned off, then reversed, then turned back on.
  • the blower may be turned on, then turned off, then reversed, then turned off, then turned back on.
  • the blower may only be cyclically or continuously actuated in a reverse direction.
  • Embodiments of the dishwasher 1500 may further include a control unit 1550 and one or more sensors, e.g., as shown as a block diagram in Figure 18 .
  • the control unit 1550 may be configured to control, adjust, and/or synchronize one or more of the operations of the dishwasher, at least partially, based on information received from the sensors.
  • the control unit may be embodied as a processor(s), coprocessor(s), a controller(s) or various other processing means or devices including, without limitation, integrated circuits.
  • sensors include, without limitation, a turbidity sensor 1570, a humidity sensor 1580, and a temperature sensor 1590.
  • a turbidity sensor is a device configured to measure the level of particulates (or simply referred to as the "dirtiness") of water or other liquids.
  • a humidity sensor is a device configured to measure the amount of moisture in or relative humidity of a medium such as air.
  • a temperature sensor is a device configured to measure the temperature of a medium such as air or water.
  • components of the dishwasher may include, without limitation, one or more heating elements 1560, a blower 1510, a spray arm 1520, and a pump 1515.
  • the control unit 1550 may be in electrical communication with the one or more sensors 1570, 1580, 1590 such the control unit 1550 receives information, e.g., level of dirtiness, level of humidity, and temperature.
  • the control unit 1550 which is in electrical communication with the components 1510, 1515, 1520, 1560 of the dishwasher, may send commands to one or more of the components 1510, 1515, 1520, 1560, e.g., turn on or off and/or increase or decrease an output.
  • the control unit 1550 may receive instructions or other information from an input device 1552, such as a control panel on the front side of the door assembly.
  • the dishwasher 1500 may further include one or more memory elements 1554 for storing instructions (e.g., a software program) for the control unit 1550.
  • Figure 19 illustrates an example of a method of drying dishware in a dishwasher that may be implemented by one or more of the embodiments disclosed herein.
  • the method includes determining a wash load size of the dishwasher 1600.
  • the wash load size provides an approximation of the amount of soils that need to be removed from the dishware.
  • the wash load size may be relatively large due to the amount of dishware (e.g., large number of plates and bowls) and/or the amount of soil that is on the dishware (e.g., the relative dirtiness of the dishware).
  • embodiments may employ relative sizes, such as, small, medium, and large.
  • the wash load size may be determined solely or at least partially through the measurement of the dirtiness or turbidity of the water in the tub portion or the sump. In general, more “soils" in the water indicates a larger wash load size.
  • the turbidity of the water may be measured by a turbidity sensor, as explained above, either during a wash or rinse cycle.
  • the location of the turbidity sensor may vary, e.g., the sensor may be in the sump or bottom portion of the tub portion.
  • the determination of the wash load size may rely on an input from an operator. For example, an operator may input a wash load size through an input device.
  • the method may further include heating water to a rinse water temperature.
  • the heated water may come from an external source such as, e.g., the water system of a house.
  • the water may be heated as part of the water system, e.g., an external water heater, and/or be heated by one or more heating elements in the dishwasher.
  • Rinsing the dishware with the heated water will heat the dishware to a dishware temperature based on the rinse water temperature, the wash load size, and the rinse cycle time.
  • the rinse water temperature has a direct relationship with the dishware temperature, i.e., the higher the rinse water temperature then the higher the dishware temperature.
  • the wash load size provides an indication of the total thermal mass of the dishware. A greater wash load size generally indicates a greater thermal mass.
  • the thermal mass of the dishware provides an indication of the time it may take to heat the dishware to a desired dishware temperature in that a larger thermal mass takes longer to heat then a small thermal mass. Therefore, it is believed that determining the wash load size helps to determine a preferred water rinse temperature and/or a preferred cycle time needed to obtain a particular dishware temperature and to effectively clean the dishware and/or effectively sanitize the dishware.
  • the method may include determining at least one of a rinse water temperature and a cycle time based on the wash load size in order to obtain a preferred dishware temperature 1610 and rinsing the dishware in the tub portion of the dishwasher with the water at the rinse water temperature and for the duration of the cycle time 1620.
  • the final rinse water temperature may be limited or fixed due to the limitations of the external water and heating elements of the dishwasher or the water system and, thus, in some embodiments, only the cycle time may be adjusted according to the wash load size. It should be understood that the determination of the preferred rinse water temperature and/or the cycle time based on the wash load size may apply to one or both of the wash and rinse cycles.
  • the method may also include determining a humidity level in the dishwasher 1630.
  • the humidity is measured by a humidity sensor located in the duct (e.g., as illustrated in Figure 12 , wherein the humidity sensor is represented by 1580). It is believed that inside the duct is a preferred location for the humidity sensor because the environment inside the duct has a relatively low level of water or liquid compared to the tub portion and sump. It is also believed that the level of humidity in the duct provides an indication of how dry the dishware is in the tub portion. For example, after the cleaning and rinse cycles, the surfaces of the dishware may be wet.
  • the water on the surfaces of the dishware may start to evaporate or vaporize into the air in the tub portion such that as the air and vaporized water enters in the duct, the measured humidity will be relatively high.
  • the dishware starts to dry, less and less water will be vaporized into the air and, thus, the air entering the duct will contain less vaporized water and the measured humidity will be less.
  • the drying cycle may stop, i.e., the method may further include ending the pulsing or cyclically actuating of the one or more heating elements and the blower upon the humidity level reaching a minimum level as discussed further herein.
  • the method may include cyclically actuating one or more heating elements on and off based, at least partially, on the humidity level to heat the air in the tub portion and promote vaporization of water from the dishware to the air 1650 and pulsing a blower on and off based, at least partially, on the humidity level to help direct the air and the vaporized water in the air to a duct 1660.
  • "Pulsing” or “cyclically actuating” generally means selectively activating or cycling the blower and the heating elements rather than constantly having these components on.
  • the humidity level and, in some embodiments, the determined wash load size may be used, for example, by the control unit to determine the preferred cycles or activation periods for the components.
  • the pulsing of the heating elements is configured to provide the requisite or optimal heat to a tub portion of the dishwasher in order to evaporate or vaporize water residual left on the dishware, i.e., to help dry the dishware, while conserving energy compared to if the heating elements were constantly on.
  • the pulsing of the blower is configured to provide additional air from outside the dishware in order to help pressure the tub portion or to otherwise encourage the air containing the water vapor toward the duct.
  • the method may further include condensing the vaporized water through the interaction of the vaporized water and one or more surfaces inside the duct (e.g., due to a tortuous path of the duct and/or fins or ribs in the duct) as the air travels through the duct 1660.
  • the method may further include directing the condensed water back into the tub portion and directing the drier air resulting from the condensation process out of the dishwasher 1670.
  • control unit through the determination of wash load size and the relative humidity or level of humidity in the duct, allows the control unit to optimize the drying cycle in that it can control the operations of the blower and the heating elements selectively and thereby conserve energy while drying the dishware in the tub portion.

Landscapes

  • Washing And Drying Of Tableware (AREA)
  • Accessory Of Washing/Drying Machine, Commercial Washing/Drying Machine, Other Washing/Drying Machine (AREA)

Claims (15)

  1. Lave-vaisselle (10), comprenant :
    une cuve (12, 602) définissant une ouverture (16) et un intérieur ;
    une porte (50) fixée à la cuve (12, 602) et configurée pour sélectivement permettre l'accès à l'intérieur de la cuve (12, 602) ;
    une conduite (220, 620) positionnée à l'intérieur de la porte (50) et possédant une entrée (222, 622) qui est en communication fluidique avec l'intérieur de la cuve (12, 602), dans lequel la conduite (220, 620) est configurée pour recevoir de l'air chaud et de l'eau vaporisée à partir de l'intérieur de la cuve (12, 602) ; et
    une soufflante (210, 610) configurée pour diriger l'air chaud et l'eau vaporisée dans la conduite (220, 620) durant un cycle de séchage du lave-vaisselle (10), caractérisé en ce que la soufflante (210, 610) est en outre configurée pour inverser la direction de fonctionnement durant le cycle de séchage.
  2. Lave-vaisselle (10) selon la revendication 1, dans lequel la conduite (220, 620) s'étend de l'entrée (222, 622) à une sortie (224, 624) et est configurée pour faciliter la condensation de l'eau vaporisée lorsque l'air chaud et l'eau vaporisée se déplacent à partir de l'entrée (222, 622) vers la sortie (224, 624).
  3. Lave-vaisselle (10) selon la revendication 2, dans lequel la sortie (224, 624) est en communication fluidique avec un environnement externe, dans lequel l'inversion de la direction de fonctionnement de la soufflante (210, 610) aspire de l'air ambiant à partir de l'environnement externe dans la conduite (220, 620) par l'intermédiaire de la sortie (224, 624) pour interagir avec l'eau vaporisée à l'intérieur de la conduite (220, 620) pour accélérer la condensation de l'eau vaporisée.
  4. Lave-vaisselle (10) selon l'une quelconque des revendications 1 à 3, dans lequel la soufflante (210, 610) définit un ventilateur unique.
  5. Lave-vaisselle (10) selon l'une quelconque des revendications 2 à 3, dans lequel de l'air ambiant à partir de l'environnement externe est aspiré dans la sortie (224, 624) de la conduite (220, 620) par la même soufflante (210, 610) configurée pour aspirer l'air chaud et l'eau vaporisée dans l'entrée (222, 622) de la conduite (220, 620).
  6. Lave-vaisselle (10) selon l'une quelconque des revendications 1 à 5, dans lequel la soufflante (210, 610) est configurée pour être actionnée cycliquement.
  7. Lave-vaisselle (10) selon la revendication 6, dans lequel l'actionnement cyclique de la soufflante (210, 610) comprend l'alternance entre :
    l'actionnement de la soufflante (210, 610) dans une direction dans laquelle l'air chaud et l'eau vaporisée sont dirigés dans l'entrée (222, 622) de la conduite (220, 620), et
    l'actionnement de la soufflante (210, 610) dans une direction inverse de fonctionnement dans laquelle de l'air ambiant à partir de l'environnement externe est aspiré dans la conduite (220, 620) par l'intermédiaire de la sortie (224, 624) pour interagir avec l'eau vaporisée à l'intérieur de la conduite (220, 620) pour accélérer la condensation de l'eau vaporisée.
  8. Lave-vaisselle (10) selon la revendication 6, dans lequel l'actionnement cyclique de la soufflante (210, 610) comprend l'alternance parmi :
    l'actionnement de la soufflante (210, 610) dans une direction dans laquelle l'air chaud et l'eau vaporisée sont dirigés dans l'entrée (222, 622) de la conduite (220, 620),
    l'actionnement de la soufflante (210, 610) dans une direction inverse de fonctionnement dans laquelle de l'air ambiant à partir de l'environnement externe est aspiré dans la conduite (220, 620) par l'intermédiaire de la sortie (224, 624) pour interagir avec l'eau vaporisée à l'intérieur de la conduite (220, 620) pour accélérer la condensation de l'eau vaporisée, et
    l'arrêt de la soufflante (210, 610).
  9. Procédé de fonctionnement d'un lave-vaisselle (10), dans lequel le lave-vaisselle (10) comprend une cuve (12, 602) définissant une ouverture (16) et un intérieur, une porte (50) fixée à la cuve (12, 602) et configurée pour permettre sélectivement l'accès à l'intérieur de la cuve (12, 602), une conduite (220, 620) positionnée à l'intérieur de la porte (50) et possédant une entrée (222, 622) qui est en communication fluidique avec l'intérieur de la cuve (12, 602) et possédant une sortie (224, 624) en communication fluidique avec un environnement externe, et une soufflante (210, 610) en communication fluidique avec la conduite (220, 620) et la cuve (12, 602),
    le procédé comprenant les étapes de :
    l'initiation du fonctionnement d'une soufflante (210, 610) durant un cycle de séchage du lave-vaisselle (10) ; et
    l'actionnement de la soufflante (210, 610) durant le cycle de séchage pour aspirer au moins l'un parmi de l'air chaud et de l'eau vaporisée à partir de la cuve (12, 602) dans la conduite (220, 620) pour faciliter la condensation de l'eau vaporisée lorsque l'air chaud et l'eau vaporisée se déplacent à travers la conduite (220, 620) ; caractérisé en ce que le procédé comprend en outre l'étape de l'inversion de la direction de fonctionnement de la soufflante (210, 610) au moins une fois durant le cycle de séchage.
  10. Procédé selon la revendication 9, dans lequel la conduite (220, 620) définit une sortie (224, 624) en communication fluidique avec un environnement externe, dans lequel l'inversion de la direction de fonctionnement de la soufflante (210, 610) aspire de l'air ambiant à partir de l'environnement externe dans la conduite (220, 620) par l'intermédiaire de la sortie (224, 624) pour interagir avec l'eau vaporisée à l'intérieur de la conduite (220, 620) pour accélérer la condensation de l'eau vaporisée.
  11. Procédé selon la revendication 9 ou 10, dans lequel la conduite (220, 620) définit un trajet tortueux pour améliorer la condensation de l'eau vaporisée.
  12. Procédé selon l'une quelconque des revendications 9 à 11, dans lequel l'actionnement de la soufflante (210, 610) comprend l'actionnement cyclique de la soufflante (210, 610), dans lequel l'actionnement cyclique de la soufflante (210, 610) comprend l'alternance entre :
    l'actionnement de la soufflante (210, 610) dans une direction dans laquelle l'air chaud et l'eau vaporisée sont dirigés dans l'entrée (222, 622) de la conduite (220, 620), et
    l'actionnement de la soufflante (210, 610) dans une direction inverse de fonctionnement dans laquelle de l'air ambiant à partir de l'environnement externe est aspiré dans la conduite (220, 620) par l'intermédiaire de la sortie (224, 624) pour interagir avec l'eau vaporisée à l'intérieur de la conduite (220, 620) pour accélérer la condensation de l'eau vaporisée.
  13. Procédé selon l'une quelconque des revendications 9 à 11, dans lequel la soufflante (210,260) comprend l'actionnement cyclique de la soufflante (210, 610), dans lequel l'actionnement cyclique de la soufflante (210, 610) comprend l'alternance parmi :
    l'actionnement de la soufflante (210, 610) dans une direction dans laquelle l'air chaud et l'eau vaporisée sont dirigés dans l'entrée (222, 622) de la conduite (220, 620),
    l'actionnement de la soufflante (210, 610) dans une direction inverse de fonctionnement dans laquelle de l'air ambiant à partir de l'environnement externe est aspiré dans la conduite (220, 620) par l'intermédiaire de la sortie (224, 624) pour interagir avec l'eau vaporisée à l'intérieur de la conduite (220, 620) pour accélérer la condensation de l'eau vaporisée, et
    l'arrêt de la soufflante (210, 610).
  14. Ensemble de porte (50) pour sélectivement permettre l'accès à une cuve (12, 602) d'un lave-vaisselle (10), l'ensemble de porte (50) comprenant :
    une paroi intérieure (60) ;
    une paroi extérieure (70) ;
    une conduite (220, 620) s'étendant entre la paroi intérieure (60) et la paroi extérieure (70), d'une entrée (222, 622) à une sortie (224, 624), dans lequel la conduite (220, 620) définit au moins partiellement un trajet tortueux, dans lequel le trajet tortueux est configuré pour faciliter la condensation d'eau vaporisée, à partir d'air chaud, lorsque l'air chaud et l'eau vaporisée sont dirigés à travers la conduite (220, 620) à partir de l'entrée (222, 622) vers la sortie (224, 624) ; et
    une soufflante (210, 610) configurée pour aspirer l'air chaud et l'eau vaporisée dans l'entrée (222, 622) de la conduite (220, 620) à partir de la cuve (12, 602) durant un cycle de séchage du lave-vaisselle (10), caractérisé en ce que la soufflante (210, 610) est configurée pour inverser la direction de fonctionnement durant le cycle de séchage.
  15. Ensemble de porte (50) selon la revendication 14, dans lequel la soufflante (210, 610) est configurée pour être activée cycliquement, dans lequel l'actionnement cyclique de la soufflante (210, 610) comprend l'alternance parmi :
    l'actionnement de la soufflante (210, 610) dans une direction dans laquelle l'air chaud et l'eau vaporisée sont dirigés dans l'entrée (222, 622) de la conduite (220, 620),
    l'actionnement de la soufflante (210, 610) dans une direction inverse de fonctionnement dans laquelle de l'air ambiant à partir de l'environnement externe est aspiré dans la conduite (220, 620) par l'intermédiaire de la sortie (224, 624) pour interagir avec l'eau vaporisée à l'intérieur de la conduite (220, 620) pour accélérer la condensation de l'eau vaporisée, et
    l'arrêt de la soufflante (210, 610).
EP14789698.9A 2014-02-05 2014-10-06 Lave-vaisselle, ensemble porte pour lave-vaisselle, et procédé associé de séchage de vaisselle Active EP3102084B1 (fr)

Priority Applications (1)

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PL14789698T PL3102084T3 (pl) 2014-02-05 2014-10-06 Zmywarka, zespół drzwiczek do zmywarki oraz związany z nim sposób suszenia naczyń

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US201461935892P 2014-02-05 2014-02-05
PCT/US2014/059329 WO2015119672A1 (fr) 2014-02-05 2014-10-06 Lave-vaisselle, ensemble porte pour lave-vaisselle, et procédé associé de séchage de vaisselle

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EP3102084B1 true EP3102084B1 (fr) 2018-05-02

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EP3335613A1 (fr) * 2016-12-19 2018-06-20 Bonferraro S.p.A. Dispositif pour la condensation de vapeur dans une circulation d'air d'un lave-vaisselle industriel ou semblable
CN106510595B (zh) * 2016-12-29 2023-09-15 佛山市顺德区美的洗涤电器制造有限公司 洗碗机
CN109856996B (zh) * 2017-11-30 2021-10-22 宁波方太厨具有限公司 一种消毒柜的烘干控制方法
CN110623619A (zh) * 2019-09-23 2019-12-31 珠海格力电器股份有限公司 洗碗机关联控制方法、装置、存储介质及洗碗机
CN111166270B (zh) * 2020-01-15 2023-08-18 宁波方太厨具有限公司 一种清洗机的工作机构
KR20220053423A (ko) * 2020-10-22 2022-04-29 엘지전자 주식회사 식기세척기
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CN106061345A (zh) 2016-10-26
EP3102084A1 (fr) 2016-12-14
CN106061345B (zh) 2018-05-25
WO2015119672A1 (fr) 2015-08-13
PL3102084T3 (pl) 2018-10-31

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