Laundry treating appliances, such as clothes washers, refreshers, and non-aqueous systems, may have a configuration based on a rotating drum that defines a treating chamber in which laundry items are placed for treating according to a cycle of operation. The drum may be mounted within a tub positioned within a chassis having a front panel. Typically, the front panel and the tub have openings that are generally aligned and connected by a bellows that accommodates vibratory movement of the tub when the drum rotates. The front panel may be selectively closed by a door, which can include a window that protrudes inward towards the tub to effectively block laundry falling out of the rotating drum from the bellows so as to prevent the laundry from being lodged within the bellows and to protect the bellows from frictional erosion between the moving laundry and the bellows.
According to an embodiment of the invention, a laundry treating appliance for treating laundry according to an automatic cycle of operation comprises a chassis defining an interior, a front panel provided with the chassis and defining a front panel opening to the interior, a door movable relative to the front panel selectively opening and closing the front panel opening, a tub located within the interior and at least partially defining a treating chamber, the tub having a tub opening at least partially aligned with the front panel opening providing access to the treating chamber through the front panel opening and the tub opening when the door is opened, a bellows extending between the front panel and the tub at their respective openings, and a deflector mounted to the tub and extending towards the door so as to overlie at least a portion of the bellows.
In the drawings:
The laundry treating appliance of
The laundry holding system comprises a tub 18 supported within the cabinet 12 by a suitable suspension system and a drum 20 provided within the tub 18, the drum 20 defining at least a portion of a laundry treating chamber 22. It is also within the scope of the invention for the laundry holding system to comprise only a tub with the tub defining the laundry treating chamber. When the laundry holding system comprises both the tub 18 and the drum 20, either or both of the tub 18 and the drum 20 may be considered to define the treating chamber 22 as the space that constitutes the treating chamber 22 is technically within both the tub 18 and the drum 20, with the drum 20 effectively carving out a portion of the space defined by the tub 18 for the treating chamber 22.
The tub 18 and the drum 20 both include an opening 24, 26 generally aligned with the front panel opening 16 to provide access into the treating chamber 22. To be aligned, the openings 16, 24, 26 need only have at least a portion overlapping each other such that access to the treating chamber 22 can be obtained through the openings 16, 24, 26; the openings 16, 24, 26 may be perfectly aligned with coincident centers, but even offset yet overlapping openings 16, 24, 26 are still considered generally aligned. The drum 20 may include a plurality of perforations 28 such that liquid may flow between the tub 18 and the drum 20 through the perforations 28. A plurality of baffles 30 may be disposed on an inner surface of the drum 20 to lift the laundry load received in the treating chamber 22 while the drum 20 rotates.
The laundry holding system may further include a door 32 which may be movably mounted to the cabinet 12 to selectively close the front panel opening 16. The door 32 may include a window 34, such as a generally flat, planar glass and/or plastic window, to allow a user to view the interior through the window 34 when the door 32 closes the opening 16. A bellows 36 may couple the tub 18 with the front panel 14 of the cabinet 12 at their respective openings 24, 16. The bellows 36 may be mounted to the front panel 14 and the tub 18 at locations directly adjacent the openings 16, 24, but is also feasible for the mounting of the bellows 36 to be spaced from the openings 16, 24 depending on the particular structure of the front panel 14 and the tub 18. An exemplary mounting of the bellows 36 to the tub 18 will be described in further detail below.
The washing machine 10 may further include a suspension system 38 for dynamically suspending the laundry holding system within the structural support system.
The washing machine 10 may further include a liquid supply system for supplying water to the washing machine 10 for use in treating laundry during a cycle of operation. The liquid supply system may include a source of water, such as a household water supply 40, which may include separate valves 42 and 44 for controlling the flow of hot and cold water, respectively. Water may be supplied through an inlet conduit 46 directly to the tub 18 by controlling first and second diverter mechanisms 48 and 50, respectively. The diverter mechanisms 48, 50 may be a diverter valve having two outlets such that the diverter mechanisms 48, 50 may selectively direct a flow of liquid to one or both of two flow paths. Water from the household water supply 40 may flow through the inlet conduit 46 to the first diverter mechanism 48 which may direct the flow of liquid to a supply conduit 52. The second diverter mechanism 50 on the supply conduit 52 may direct the flow of liquid to a tub outlet conduit 54 which may be provided with a spray nozzle 56 configured to spray the flow of liquid into the tub 18. In this manner, water from the household water supply 40 may be supplied directly to the tub 18.
The washing machine 10 may also be provided with a dispensing system for dispensing treating chemistry to the treating chamber 22 for use in treating the laundry according to a cycle of operation. The dispensing system may include a dispenser 62 which may be a single use dispenser, a bulk dispenser or a combination of a single and bulk dispenser. Non-limiting examples of suitable dispensers are disclosed in U.S. Pub. No. 2010/0000022 to Hendrickson et al., filed Jul. 1, 2008, now U.S. Pat. No. 8,196,441, issued Jun. 12, 2012. entitled “Household Cleaning Appliance with a Dispensing System Operable Between a Single Use Dispensing System and a Bulk Dispensing System,” U.S. Pub. No. 2010/0000024 to Hendrickson et al., filed Jul. 1, 2008, now U.S. Pat. No. 8,388,695, issued Mar. 5, 2013, entitled “Apparatus and Method for Controlling Laundering Cycle by Sensing Wash Aid Concentration,” U.S. Pub. No. 2010/0000573 to Hendrickson et al., filed Jul. 1, 2008, now U.S. Pat. No. 8,397,328, issued Mar. 19, 2013, entitled “Apparatus and Method for Controlling Concentration of Wash Aid in Wash Liquid,” U.S. Pub. No. 2010/0000581 to Doyle et al., filed Jul. 1, 2008, now U.S. Pat. No. 8,813,526, issued Aug. 26, 2014, entitled “Water Flow Paths in a Household Cleaning Appliance with Single Use and Bulk Dispensing,” U.S. Pub. No. 2010/0000264 to Luckman et al., filed Jul. 1, 2008, entitled “Method for Converting a Household Cleaning Appliance with a Non-Bulk Dispensing System to a Household Cleaning Appliance with a Bulk Dispensing System,” U.S. Pub. No. 2010/0000586 to Hendrickson, filed Jun. 23, 2009, now U.S. Pat. No. 8,397,544, issued Mar. 19, 2013, entitled “Household Cleaning Appliance with a Single Water Flow Path for Both Non-Bulk and Bulk Dispensing,” and U.S. Pub. No. 2012/0266389, filed Apr. 25, 2011, now U.S. Pat. No. 8,438,881, issued May 14, 2013, entitled “Method and Apparatus for Dispensing Treating Chemistry in a Laundry Treating Appliance,” which are herein incorporated by reference in full.
Regardless of the type of dispenser used, the dispenser 62 may be configured to dispense a treating chemistry directly to the tub 18 or mixed with water from the liquid supply system through a dispensing outlet conduit 64. The dispensing outlet conduit 64 may include a dispensing nozzle 66 configured to dispense the treating chemistry into the tub 18 in a desired pattern and under a desired amount of pressure. For example, the dispensing nozzle 66 may be configured to dispense a flow or stream of treating chemistry into the tub 18 by gravity, i.e., a non-pressurized stream. Water may be supplied to the dispenser 62 from the supply conduit 52 by directing the diverter mechanism 50 to direct the flow of water to a dispensing supply conduit 68.
Non-limiting examples of treating chemistries that may be dispensed by the dispensing system during a cycle of operation include one or more of the following: water, enzymes, fragrances, stiffness/sizing agents, wrinkle releasers/reducers, softeners, antistatic or electrostatic agents, stain repellants, water repellants, energy reduction/extraction aids, antibacterial agents, medicinal agents, vitamins, moisturizers, shrinkage inhibitors, and color fidelity agents, and combinations thereof.
The washing machine 10 may also include a recirculation and drain system for recirculating liquid within the laundry holding system and draining liquid from the washing machine 10. Liquid supplied to the tub 18 through the tub outlet conduit 54 and/or the dispensing supply conduit 68 typically enters a space between the tub 18 and the drum 20 and may flow by gravity to a sump 70 formed in part by a lower portion of the tub 18. The sump 70 may also be formed by a sump conduit 72 that may fluidly couple the lower portion of the tub 18 to a pump 74. The pump 74 may direct liquid to a drain conduit 76, which may drain the liquid from the washing machine 10, or to a recirculation conduit 78, which may terminate at a recirculation inlet 80. The recirculation inlet 80 may direct the liquid from the recirculation conduit 78 into the drum 20. The recirculation inlet 80 may introduce the liquid into the drum 20 in any suitable manner, such as by spraying, dripping, or providing a steady flow of liquid. In this manner, liquid provided to the tub 18, with or without treating chemistry may be recirculated into the treating chamber 22 for treating the laundry within.
The liquid supply and/or recirculation and drain system may be provided with a heating system which may include one or more devices for heating laundry and/or liquid supplied to the tub 18, such as a steam generator 82 and/or a sump heater 84. Liquid from the household water supply 40 may be provided to the steam generator 82 through the inlet conduit 46 by controlling the first diverter mechanism 48 to direct the flow of liquid to a steam supply conduit 86. Steam generated by the steam generator 82 may be supplied to the tub 18 through a steam outlet conduit 87. The steam generator 82 may be any suitable type of steam generator such as a flow through steam generator or a tank-type steam generator. Alternatively, the sump heater 84 may be used to generate steam in place of or in addition to the steam generator 82. In addition or alternatively to generating steam, the steam generator 82 and/or the sump heater 84 may be used to heat the laundry and/or liquid within the tub 18 as part of a cycle of operation.
Additionally, the liquid supply and recirculation and drain system may differ from the configuration shown in
The washing machine 10 also includes a drive system for rotating the drum 20 within the tub 18. The drive system may include a motor 88, which may be directly coupled with the drum 20 through a drive shaft 90 to rotate the drum 20 about a rotational axis during a cycle of operation. The motor 88 may be a brushless permanent magnet (BPM) motor having a stator 92 and a rotor 94. Alternately, the motor 88 may be coupled to the drum 20 through a belt and a drive shaft to rotate the drum 20, as is known in the art. Other motors, such as an induction motor or a permanent split capacitor (PSC) motor, may also be used. The motor 88 may rotate the drum 20 at various speeds in either rotational direction.
The washing machine 10 also includes a control system for controlling the operation of the washing machine 10 to implement one or more cycles of operation. The control system may include a controller 96 located within the cabinet 12 and a user interface 98 that is operably coupled with the controller 96. The user interface 98 may include one or more knobs, dials, switches, displays, touch screens and the like for communicating with the user, such as to receive input and provide output. The user may enter different types of information including, without limitation, cycle selection and cycle parameters, such as cycle options.
The controller 96 may include the machine controller and any additional controllers provided for controlling any of the components of the washing machine 10. For example, the controller 96 may include the machine controller and a motor controller. Many known types of controllers may be used for the controller 96. The specific type of controller is not germane to the invention. It is contemplated that the controller is a microprocessor-based controller that implements control software and sends/receives one or more electrical signals to/from each of the various working components to effect the control software. As an example, proportional control (P), proportional integral control (PI), and proportional derivative control (PD), or a combination thereof, a proportional integral derivative control (PID control), may be used to control the various components.
As illustrated in the schematic diagram of
The controller 96 may be operably coupled with one or more components of the washing machine 10 for communicating with and controlling the operation of the component to complete a cycle of operation. For example, the controller 96 may be operably coupled with the motor 88, the pump 74, the dispenser 62, the steam generator 82, and the sump heater 84 to control the operation of these and other components to implement one or more of the cycles of operation.
The controller 96 may also be coupled with one or more sensors 104 provided in one or more of the systems of the washing machine 10 to receive input from the sensors, which are known in the art and not shown for simplicity. Non-limiting examples of sensors 104 that may be communicably coupled with the controller 96 include: a treating chamber temperature sensor, a moisture sensor, a weight sensor, a chemical sensor, a position sensor, and a motor torque sensor, which may be used to determine a variety of system and laundry characteristics, such as laundry load inertia or mass.
Referring now to
Additionally, the inner lip 128 may include a rearwardly extending annular spacer 138 that longitudinally spaces the tub 18 from the drum 20 at their respective openings 24, 26, thus preventing the drum 20 from hitting the tub 18, such as during rotation of the drum 20, along a longitudinal direction. In the illustrated embodiment, the front of the drum 20 may include an inwardly extending annular flange 140 terminating at a curled front edge 142, and the spacer 138 spaces the drum flange 140 from the tub protrusion 120.
The washing machine may further include a deflector 150 mounted to the tub 18 and overlying at least a portion of the bellows 36. The deflector 150 functions to encourage movement of the laundry that may fall out of the drum 20, which may occur during rotation of the drum 20, back into the drum 20. The deflector 150 may also protect the bellows 36 from frictional wear that may occur due to laundry rubbing against the bellows 36 and help prevent laundry and possibly other items, such as detergent pods and objects that have fallen out of pockets, from undesirably falling through the gap 134 into the space 136.
Referring now to the perspective view of the deflector in
A resilient guard 160 may be disposed along at least a portion of and possibly the entire front edge 154 of the body 152. The guard 160 may be made of any suitable generally resilient or compliant polymeric material and may be formed integrally with the body, such as by co-molding or overmolding processes, or may be made separately and attached by any suitable means, including adhesives, welding, and mechanical fasteners. Exemplary resilient materials include, but are not limited to, Santoprene™ thermoplastic rubber and ethylene propylene diene monomer (EPDM) rubber.
A generally arcuate, radial flange 162 may depend from a lower side of the body 152 to facilitate mounting of the deflector 150. The flange 162 may have any suitable dimensions, and an exemplary radial height of the flange 162 is about 35 mm (1.38 in.). The flange 162 may extend from one of the side edges 158 to the other side edge 158, as illustrated, or may have a shorter length or be formed as a series of discontinuous, circumferentially spaced flanges, if desired. The flange 162 may have any suitable position relative to the front and rear edges 154, 156 in the longitudinal direction, and, in the illustrated example, the flange 162 may be spaced about 15 mm (0.59 in.) forward of the rear edge 156. Additionally, the flange 162 may lie in a generally vertical plane, as illustrated, or be angled if necessary for mounting of the deflector 150.
The deflector 150 may further include one or more ribs 164 on a lower side of the body 152 to support the sloped configuration of the body 152. The ribs 164 may extend longitudinally forward from the flange 162 and may be spaced circumferentially from each other. While the ribs may have any suitable shape, the illustrated ribs 164 are generally triangular and decrease in size, both longitudinally and radially, from the lowest point of the body 152, where the inclination angle of the body 152 is greatest, toward the side edges 158. The ribs 164 may be sized so as to prevent contact with the bellows 36 when mounted to the tub 18 (
Returning to
The guard 160 may provide a cushioned interface between the front edge 154 of the deflector 150 and the door window 34, especially when the deflector 150 extends axially to the door 32. The guard 160 may be in abutting contact with the window 34, either continuously or intermittently as a result of tub vibrations during rotation of the drum 20. The resilient material forming the guard 160 absorbs at least some of the impact of the deflector 150 hitting the window 34, thus protecting the window 34 and the deflector 150 and reducing the volume of the noise generated during the hitting.
The other end of the deflector 150, the rear edge 156, may overlie, and optionally extend beyond, the front edge 142 of the drum 20 to ensure continuous movement of fallen laundry from the deflector 150 into the drum 20. Such a configuration precludes formation of a gap between the deflector rear edge 156 and the drum 20 within which laundry and other items could potentially become lodged. The deflector 150 may be radially spaced from the drum front edge 142 to accommodate movement of the drum 20 during its rotation. As seen in
The deflector 150 may be mounted to the tub 18 with the mounting flange 162. In particular, the deflector mounting flange 162 is inserted through the bellows gap 134 and into the bellows space 136 and positioned generally coplanar with the flat front face 122 of the tub protrusion 120 with the bellows flange 132 therebetween. Mechanical fasteners 168 may be inserted through the deflector mounting flange 162, the bellows flange 132, and the tub protrusion 120 to secure the deflector 150 to the tub 18. Other mounting methods are feasible, including welding and adhesives. The deflector 150 may be mounted to the tub 18 at the bottom of the tub opening 24 so that the deflector 150 is positioned to overlie the lower portion of the bellows 36, as illustrated. Separate mechanical fasteners 170 may be employed to mount the bellows 36 to the tub 18, such as through openings provided on the bellows 36 and the tub protrusion 120 below the deflector mounting flange 162, as shown in
During operation of the washing machine 10, various portions of an operation cycle may include rotation of the drum 20 to rotate the laundry held within the treating chamber 22. As mentioned above, some of the laundry may fall out of the drum 20 into the area defined between the front panel opening 16 and the tub and drum openings 24, 26, i.e., the area with the bellows 36. Some of the laundry may fall onto the deflector 150, which, due to the inclination angle of the body 152, encourages the fallen laundry to slide downward and rearward for depositing back into the drum 20. It is possible that some of the fallen laundry may continue, due to momentum, to rotate along the deflector 150 to the upper portion of the deflector 150, in which case, the curled side edges 158 (
Mounting the deflector 150 to the tub 18 provides several advantages. For example, such mounting results in the deflector 150 being stationary with respect to the tub 18. Although the tub 18 does not rotate, it is part of the suspended laundry holding system and undergoes some vibrational movement during rotation of the drum 20. Mounting the deflector 150 to the tub 18 for cooperative movement maintains the position of the deflector 150 with respect to the tub 18 and prevents formation of undesirable gaps between the deflector 150 and the tub and drum openings 24, 26 at the rear edge 156 of the deflector 150. Any gaps resulting from movement of the deflector 150 would be located at the front edge 154 near the door 32, which is farther away from the laundry, thus resulting in a smaller likelihood of the laundry getting caught and clogged in such gaps. Further, the use of the deflector 150 allows the door window 34 to be generally flat rather than a window that protrudes inward towards the tub 18, as described in the background, because the deflector 150 blocks the laundry from the bellows 36, thus rendering the protruding window unnecessary. Advantageously, using a generally flat window increases the capacity of the washing machine 10 and improves visual observation of the laundry load in the treating chamber 22 compared to the use of a protruding window.
The deflector 150 may be altered in any suitable manner. For example, the deflector 150 may be configured to be removably mounted to the tub 18 without tools such that a user may be able to easily remove the deflector 150 from the washing machine 10, such as for cleaning or replacement. Such a removable connection may be formed by, for example, mating tabs and slots, such as mating pins and keyhole slots, detents, bayonet connections, and the like. As another alterative, the deflector 150 may form a complete ring such that the deflector 150 extends circumferentially completely around the bellows 36.
To the extent not already described, the different features and structures of the various embodiments may be used in combination with each other as desired. That one feature may not be illustrated in all of the embodiments is not mean to be construed that it cannot be, but is done for brevity of description. Thus, the various features of the different embodiments may be mixed and matched as desired to form new embodiments, whether or not the new embodiments are expressly described.
While the invention has been specifically described in connection with certain specific embodiments thereof, it is to be understood that this is by way of illustration and not of limitation. Reasonable variation and modification are possible within the scope of the forgoing disclosure and drawings without departing from the spirit of the invention which is defined in the appended claims.
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Number | Date | Country | |
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20160145790 A1 | May 2016 | US |