Dishwashers are used in many applications to clean dishes, silverware, cutlery, cups, glasses, pots, and pans, etc. Most conventional dishwashers rely on a single-use detergent dispenser, often located on the interior of the door of the dishwasher. Such conventional dispensers include an opening allowing for a volume of liquid, powder, dissolvable pods, or capsule detergent to be loaded for a single washing cycle. During the washing cycle, such a dispenser is opened to allow the entirety of the detergent therein to be expelled. As such, a user is required to reload the dispenser before each washing cycle. Because of the necessity of handling the detergent each and every time for a new washing cycle, this filling process of the conventional dishwasher dispenser can be inconvenient. In certain instances, it may be desirable to minimize the number of times the user is required to fill the dispenser.
Thus, there is a need in the art to improve the existing detergent dispensers.
The herein-described embodiments address these and other problems associated with the art by providing a dishwasher with a rotary multiple use detergent dispenser. The present disclosure is related to an apparatus for receiving and holding a blister pack with a plurality of detergents compositions and/or additives and for individually dispensing the detergent into an automatic dishwasher over a plurality of washing cycles.
In some embodiments, a dishwasher may include a wash tub and a detergent dispenser positioned in the wash tub to dispense detergent into the wash tub. The detergent dispenser may include a driving mechanism with a rotating shaft defining a rotational axis, an elongated member having a first end coupled to the rotating shaft and a second end projecting radially outward therefrom, a track plate having a first side, a second side, and a curved track therein disposed about the rotational axis. The curved track may be used for receiving the second end of the elongated member. The detergent dispenser may also include a backing plate having a first side and a second side, and the backing plate may have one or more outlets on the second side therethrough in fluid communication with the wash tub. The detergent dispenser may also include a blister pack for coupling between the second side of the track plate and the first side of the backing plate, and the blister pack may have a plurality of detergents arranged in a configuration complementary to the curved track. The driving mechanism may rotate the elongated member on the first side of the track plate with respect to the track plate and the blister pack together along a plurality of rotational positions following the curved track, and one or more of the plurality of rotational positions may orientate the second end of the elongated member proximate the plurality of detergents to dispense detergent into the wash tub through the one or more outlets of the backing plate.
In some embodiments, a dishwasher may include a wash tub and a detergent dispenser positioned in the wash tub to dispense detergent into the wash tub. The detergent dispenser may include a driving mechanism with a rotating shaft defining a rotational axis, an elongated member having a first end coupled to the rotating shaft and a second end projecting radially outward therefrom, a track plate having a curved track therein disposed about the rotational axis. The curved track may be used for receiving the second end of the elongated member. The detergent dispenser may also include a backing plate having one or more outlets in fluid communication with the wash tub. The detergent dispenser may also include a blister pack for coupling between the track plate and the backing plate, and the blister pack may have a plurality of detergents arranged in a configuration complementary to the curved track. The driving mechanism may rotate the blister pack with respect to the track plate and the elongated member together along a plurality of rotational positions following the curved track, and one or more of the plurality of rotational positions may orientate the second end of the elongated member proximate the plurality of detergents to dispense detergent into the wash tub through the one or more outlets of the backing plate.
In some embodiments, a dishwasher may include a wash tub and a detergent dispenser positioned in the wash tub to dispense detergent into the wash tub. The detergent dispenser may include a track plate having a track thereon, a blister pack having a plurality of detergents arranged in a configuration complementary to the track, a backing plate adjacent one side of the blister pack and having one or more outlets in fluid communication with the wash tub, a member adjacent the other side of the blister pack and configured to move following the track, and a driving mechanism driving the member among a plurality of track positions. The one or more of the plurality of track positions may orientate the member proximate the plurality of detergents to dispense detergent into the wash tub through the one or more outlets of the backing plate.
This Summary is provided to introduce a selection of concepts in a simplified form that are further described below in the Detailed Description. This Summary is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used to limit the scope of the claimed subject matter. All of the above-outlined features are to be understood as exemplary only, and many more features and objectives of the various embodiments may be gleaned from the disclosure herein. Therefore, no limiting interpretation of this summary is to be understood without further review of the entire specification, claims, and drawings included herewith. A more extensive presentation of features, details, utilities, and advantages of the present disclosure is provided in the following written description of various embodiments of the disclosure, illustrated in the accompanying drawings, and defined in the appended claims.
In the drawings, like reference characters generally refer to the same parts throughout the different views. Also, the drawings are not necessarily to scale, emphasis instead generally being placed upon illustrating the principles of the disclosure
It is to be understood that a dishwasher with a rotary multiple use detergent dispenser is not limited in its application to the details of construction and the arrangement of components set forth in the following description or illustrated in the drawings. The described embodiments are capable of other configurations and of being practiced or of being carried out in various ways. Also, it is to be understood that the phraseology and terminology used herein is for the purpose of description and should not be regarded as limiting. The use of “including,” “comprising,” or “having” and variations thereof is meant to encompass the items listed thereafter and equivalents thereof, as well as additional items. Unless limited otherwise, the terms “connected,” “coupled,” and “mounted,” and variations thereof herein, are used broadly and encompass direct and indirect connections, couplings, and mountings. In addition, the terms “connected” and “coupled” and variations thereof are not restricted to direct physical or mechanical connections or couplings.
The embodiments discussed hereinafter will, for convenience only, focus on the implementation of the hereinafter-described techniques within a residential type dishwashing appliance with a hinged door. However, it will be appreciated that the herein-described techniques may also be used in connection with other types of kitchen appliances in some embodiments. For example, the herein-described techniques may be used in a commercial dishwashing application or other types of appliances (e.g., a washer) in some embodiments. Moreover, at least some of the herein-described techniques may be used in connection with other dishwasher configurations, including dishwashers utilizing sliding drawers or dish sink dishwashers, e.g., a dishwasher integrated into a sink.
Turning now to the drawings, wherein like numbers denote like parts throughout the several views,
In the embodiments of the present disclosure, the dishwasher 10 may include a detergent dispenser 30 with multiple dishwashing cycles' worth of detergent 2/compartments 3 within the detergent dispenser 30, so that it is not necessary for a user to add additional detergent before each dishwashing cycle. Such a detergent dispenser 30 may be positioned, as illustrated in
Now turning to the
In some embodiments, as illustrated in
In some embodiments, the detergent dispenser 30 may also include the track plate 50 with a first side 8 and a second side 9. The first side 8 may, for example, face the member 20, and the second side 9 may face the blister pack 1. As shown in
Besides the track plate 50, in some embodiments, the detergent dispenser 30 may include the backing plates 40 to support the blister pack 1 and/or compartments 3 of the blister pack 1 (e.g. when the compartment 3 with detergent 2 inside is engaged/disengaged by the elongated member 20) under compression. A first side 11 of the backing plate 40 may be positioned on or adjacent to at least one side of the blister pack 1, and a second side 15 of the backing plate 40 may proximate the wash tub 16. The backing plate 40 may include one or more outlets 42 on the second side 15 in communication with the wash tub 16. The outlet 42 of the backing plate 40 may be proximate the detergent 2/compartment 3 and/or the plurality of rotational positions or the elongated member 20. The shape of the outlet 42 are not limited, it being understood that the purpose of the outlet 42 is to receive therethrough the detergent 2.
As discussed above, in some embodiments, the detergent dispenser 30 may include one or more replaceable blister packs 1 located between the track plate 52 and the backing plate 40 on the door 12 of the dishwasher 10. More specifically, the blister pack 1 may be position between the second side 9 of the tracking plate 50 and the first side 11 of the back plate 40. Each blister pack 1 may be configured to hold a plurality of unit doses of detergent 2 within a plurality of compartments 3 for a variety of washing cycles. For example, the blister pack 1 may include a plurality of deep-drawn compartments 3 along the circumference thereof to receive and hold the detergent 2. The detergent 2 may include detergent of all varieties, including, but not limited to, liquid detergent, rinse aids, powder detergent, and/or dissolvable pod/capsule/tablet detergent. In some embodiments as shown here, the blister pack 1 may be in a circular or wheel-like configuration to match the configuration of the curved track 52. In some implementations of the blister pack 1, the compartment 3 may be formed on the blister pack 1 by positioning along one or more circumferences or arcuate paths thereof for receiving the tablets of detergent 2. For example, the detergent 2/compartment 3 may be arranged on the blister pack 1 in at least one circle about the rotational axis R along the circumference thereof, following the curved track 52 biased towards a smaller radius circle.
In use, the detergent 2 in the blister pack 1 may be protected from access of water or washing liquid until the point of time when ejection of the tablets/detergent 2 therefrom is desired. To accomplish this, the compartment 3 filled with detergent 2 may be made of waterproof plastic material. Alternatively, the compartment 3 may be constructed in a waterproof manner to avoid any access of water or washing liquid thereinto for protection of the detergent 2 stored therein. Meanwhile, the material of the compartment 3 is fragile for easy ejection, such as a foil or easy broken plastic material. To improve the ejection of the detergent 2 from the compartment 3 during operation of the dishwasher 10, weakening lines (not shown) or the like may be provided around or within each single compartment 3. In some embodiments, a blade 64 may be used in various embodiments to aid in the tearing/ejection of the blister or package. For example, as shown in
In some embodiments, the blister pack 1 may be stationary relative to one or more portions of the dispenser 30 (e.g. the elongated member 20, the backing plate 40, the track plate 50, the driving mechanism 70, etc.). Alternatively, in some other embodiments, the blister pack 1 may not be stationary (e.g. be able to move or rotate). For example, in some embodiments, the driving mechanism 70/the shaft 72 may engage the blister pack 1 and drive the blister pack 1 positioned between the track plate 50 and the backing plate 40 to rotate with respect to the elongated member 20 and the track plate 50 to a plurality of rotational positions about the rotational axis R in a continuous manner to engage the detergent 2/compartment 3, following the curved track 52, to dispense detergent through the outlet 42 on the backing plate 40 into the wash tub 16.
It should be understood that the blister pack 1 and/or portions thereof may be a variety of quantities, shapes, sizes, patterns of compartments/detergent, and constructions and still be within the scope of the present disclosure. It should be understood that alternative embodiments of the blister pack 1 may be acceptable. For example, the blister pack 1 may be comprised of a row of individually packaged compartments 3 formed into a loop. In such embodiments, the detergent dispenser 30 including the track plate 50 and the track 52 of the present disclosure may have a different shape/configuration, i.e. not circular, may be square. Any feasible forms, configurations, and shapes of the blister pack 1 and detergent dispenser 30 are within the scope of the present claims and may be considered as appropriate by someone skilled in the art.
During operation, in some embodiments, the member 20 or portions thereof may engage/disengage from the compartment 3 and/or expel the detergent 2 from the blister pack 1 via rotational movement (e.g. clockwise and/or counterclockwise), axial movement (e.g. parallel movement to the rotational axis away from or towards the blister pack), linear/radial movement away from or towards the rotational axis, or a combination thereof in one or more sequences or washing cycles. For example, in some embodiments, the member 20 may engage/disengage from the detergent 2/compartment 3 along the same circumferential path (e.g. at a constant radial length from the rotational axis R), without axial movement in the direction along the rotational axis R. In some embodiments, the rotational movement of the member 20 may be in a first rotational direction (e.g. clockwise), a second rotational direction (e.g. counter clockwise or different from the first rotational direction), or both. In one embodiment, with the specific track pattern 52 as shown in
In the embodiments as shown here, the rotational positions of the elongated member 20 and/or the backing plate 40 following the track 52, proximate the one or more detergent 2/compartment 3 and/or the outlet 42 to dispense the detergent 2 from the blister pack 1, may be a variety of rotational positions or degrees θ between positions. Moreover, in some embodiments, the rotational positions may be between or spaced from the detergent 2/compartment 3 and therefore do not have to be proximate the detergent 2/compartment 3 in each rotational position. In some embodiments, the elongated member 20 and/or the backing plate 40 may rotate in the same or different rotational directions/positions and/or degrees of rotation. The spacing or degrees between rotational positons of the elongated member 20 and/or the backing plate 40 may be the same, but may be different in some embodiments. Moreover, the elongated member 20 and/or the backing plate 40 may rotate together or rotate independently from each other to a variety of rotational positions.
Moreover, in some embodiments, the member 20 or detergent dispenser 30 may include one or more one-way bearings 21. The one way bearing, if used, allows the driving mechanism 70/shaft 72 to turn one or more portions of the detergent dispenser in single rotational direction, but not the other rotational direction when the shaft 72 reverses or changes rotational direction. For example, if the member 20 includes a one-way bearing 21 engaging the shaft 72, the member 20 may only rotate in the clockwise or first rotational direction to a first plurality of rotational positions, and not the counterclockwise direction. In various embodiments, the driving mechanism 70 may rotate at least the backing plate 40, the member 20, or both between multiple rotational positions and/or directions. It should be understood that other forms of movement of the member 20 and/or the backing plate 40 (e.g., linear movement) may also be acceptable besides rotation.
In some embodiments, the detergent dispenser 30 may include one or more dispensing devices 60 to variably control the ejection mechanism. In some embodiments, the member 20 may include one or more dispensing devices 60 for one or more applications. For example, as shown in
In some embodiments, the member 20 may include a plurality of dispensing devices 60. In some embodiments, the dispensing device 60 at the second end 23 of the elongated member 20 may be spaced (e.g. radially) from each other along the elongated member 20 and/or the backing plate 40 to engage and expel detergent 2 at multiple radial distances from the rotational axis R. The dispensing device 60 at the second end 23 may vary the axial length at the same or different times at their respective radial distances from the rotational axis. For example, a first dispensing device 60 may be positioned at a first radial distance or radius from the rotational axis R, and a second dispensing device 60 may be positioned at a second radial distance or radius less than the first radial distance. In different embodiments, the first end 22 or portions of the elongated member 20 may also include the one or more dispensing devices 60.
In some embodiments, as shown in
In some embodiments, as shown in
In some embodiments, as shown in
For resetting the actuator 62 after the replacement of the blister pack 1 (i.e. resetting the length of the elongated member 20 to the starting position 6 on the curved track 52), some certain actions may be required to apply on the actuator 62. As the use may need to replace the blister pack 1 anyway before resetting, it may be possible to use the interaction input from the user (e.g., re-pretension the spring by the user) for such resetting operations in some embodiments. For example, the spring load of the spring actuator 62 may be overcome by handling of a user to reset the elongated member 20 back to its full extension from the final position 5 to the starting position 6, following the extended linear radial offset 7, after replacing the blister pack 1. In such a manner, the construction of the actuator 62 may be simpler and more reliable, as no resetting mechanism is needed to be built in the actuator 62 itself. It should be understood that other feasible devices may be used for the resetting of the actuator 62. For example, a motor or solenoid may be adapted to force the extension of the spring such resetting operations.
In various embodiments, the backing plate 40 may be either stationary or fixed. In some embodiments as shown in
In some other embodiments, as shown in
In some implementations, a housing 32 as shown in
In some embodiments, the dishwasher 10 may be under the control of a controller that receives inputs from a number of components and drives a number of components in response thereto. The controller may for example, include one or more processors and a memory (not shown) within which may be stored program code for execution by the one or more processors. The memory may be embedded in the controller, but may also be considered to include volatile and/or non-volatile memories, cache memories, flash memories, programmable read-only memories, read-only memories, etc., as well as memory storage physically located elsewhere from the controller, e.g., in a mass storage device or on a remote computer interfaced with controller.
The controller may be interfaced with various components of the dishwasher 10, including an inlet valve that is coupled to a water source to introduce water into the wash tub 16, which when combined with detergent, rinse agent and/or other additives, forms various wash fluids. The controller may also be coupled to a heater that heats fluids, a pump that recirculates wash fluid within the wash tub by pumping fluid to the wash arms and other spray devices in the dishwasher, an air supply that may provide a source of pressurized air for use in drying utensils in the dishwasher, a drain valve that is coupled to a drain to direct fluids out of the dishwasher, and a diverter that controls the routing of pumped fluid to different spray arms and/or other sprayers during a washing cycle.
The controller may also be coupled to the detergent dispenser 30 to trigger the dispensing of detergent into the wash tub at appropriate points during a washing cycle. More particularly, the controller may be coupled to the driving mechanism 70 (e.g. a motor) of the detergent dispenser 30, which may include one or more micro switches or a stepper motor in order to control and/or determine the rotational positioning or direction of the various member 20, the dispensing device 60, and/or the backing plate 40. The dispensing device 60 may also be coupled to the controller to dispense and/or engage/disengage the member 20 or portions thereof (e.g. radially and/or axially, etc.). Additional sensors and actuators may also be used in some embodiments, including a temperature sensor to determine a wash fluid temperature, a door switch to determine when the dishwasher door 12 is latched, and a door lock to prevent the door from being opened during a washing cycle. If used, a break beam sensor or other suitable sensors may be used to detect tablet ejection from the detergent dispenser 30 and/or the outlet 42 of the backing plate 40, etc. The tablet or detergent 2 dispensed from the detergent blister pack 1 may break the beam upon ejection. Moreover, the controller may be coupled to a user interface including various input/output devices such as knobs, dials, sliders, switches, buttons, lights, textual and/or graphics displays, touch screen displays, speakers, image capture devices, microphones, etc. for receiving input from and communicating with a user. In some embodiments, the controller may also be coupled to one or more network interfaces, e.g., for interfacing with external devices via wired and/or wireless networks such as Ethernet, Bluetooth, NFC, cellular, and other suitable networks.
Moreover, in some embodiments, at least a portion of the controller may be implemented externally from the dishwasher 10, e.g., within a mobile device, a cloud computing environment, etc., such that at least a portion of the functionality described herein is implemented within the portion of the controller that is externally implemented. In some embodiments, the controller may operate under the control of an operating system and may execute or otherwise rely upon various computer software applications, components, programs, objects, modules, data structures, etc. In addition, the controller may also incorporate hardware logic to implement some or all of the functionality disclosed herein. Further, in some embodiments, the sequences of operations performed by the controller to implement the embodiments disclosed herein may be implemented using program code including one or more instructions that are resident at various times in various memory and storage devices, and that, when read and executed by one or more hardware-based processors, perform the operations embodying desired functionality. Moreover, in some embodiments, such program code may be distributed as a program product in a variety of forms, and that the present disclosure applies equally regardless of the particular type of computer readable media used to actually carry out the distribution, including, for example, non-transitory computer readable storage media. In addition, it should be understood that the various operations described herein may be combined, split, reordered, reversed, varied, omitted, parallelized and/or supplemented with other techniques known in the art, and therefore, the present disclosure is not limited to the particular sequences of operations described herein.
In some embodiments, there may be multiple micro switches to determine at which point the detergent dispenser 30 reaches a resettable position to change the direction of motor operation and/or to replace the blister pack 1. For example, one or more intermittent switches may be provided proximate the final position 5 on the track 52, and one or more micro switches may trigger a “reload” button to light on the dishwasher 10 to remind the user to replace the blister pack 1 and reset the ejection mechanism of the dispenser 30. It should be understood that any other feasible devices, such as a break beam laser or a reed switch assembly, may also be used here.
It should be understood that the detergent dispensing mechanism described here could vary greatly and still accomplish the same intent. The elements depicted in the accompanying figures may include additional components and that some of the components described in those figures may be removed and/or modified without departing from scopes of the elements disclosed herein. The elements depicted in the figures may not be drawn to scale and thus, the elements may have different sizes and/or configurations other than as shown in the figures. Various additional modifications may be made to the illustrated embodiments consistent with the present disclosure. Therefore, the present disclosure lies in the claims hereinafter appended.
While several inventive embodiments have been described and illustrated herein, those of ordinary skill in the art will readily envision a variety of other means and/or structures for performing the function and/or obtaining the results and/or one or more of the advantages described herein, and each of such variations and/or modifications is deemed to be within the scope of the inventive embodiments described herein. More generally, those skilled in the art will readily appreciate that all parameters, dimensions, materials, and configurations described herein are meant to be exemplary and that the actual parameters, dimensions, materials, and/or configurations will depend upon the specific application or applications for which the inventive teachings is/are used. Those skilled in the art will recognize, or be able to ascertain using no more than routine experimentation, many equivalents to the specific inventive embodiments described herein. It is, therefore, to be understood that the foregoing embodiments are presented by way of example only and that, within the scope of the appended claims and equivalents thereto, inventive embodiments may be practiced otherwise than as specifically described and claimed. Inventive embodiments of the present disclosure are directed to each individual feature, system, article, material, kit, and/or method described herein. In addition, any combination of two or more such features, systems, articles, materials, kits, and/or methods, if such features, systems, articles, materials, kits, and/or methods are not mutually inconsistent, is included within the inventive scope of the present disclosure.
All definitions, as defined and used herein, should be understood to control over dictionary definitions, definitions in documents incorporated by reference, and/or ordinary meanings of the defined terms.
The indefinite articles “a” and “an,” as used herein in the specification and in the claims, unless clearly indicated to the contrary, should be understood to mean “at least one.”
The phrase “and/or,” as used herein in the specification and in the claims, should be understood to mean “either or both” of the elements so conjoined, i.e., elements that are conjunctively present in some cases and disjunctively present in other cases. Multiple elements listed with “and/or” should be construed in the same fashion, i.e., “one or more” of the elements so conjoined. Other elements may optionally be present other than the elements specifically identified by the “and/or” clause, whether related or unrelated to those elements specifically identified. Thus, as a non-limiting example, a reference to “A and/or B”, when used in conjunction with open-ended language such as “comprising” can refer, in one embodiment, to A only (optionally including elements other than B); in another embodiment, to B only (optionally including elements other than A); in yet another embodiment, to both A and B (optionally including other elements); etc.
As used herein in the specification and in the claims, “or” should be understood to have the same meaning as “and/or” as defined above. For example, when separating items in a list, “or” or “and/or” shall be interpreted as being inclusive, i.e., the inclusion of at least one, but also including more than one, of a number or list of elements, and, optionally, additional unlisted items. Only terms clearly indicated to the contrary, such as “only one of” or “exactly one of,” or, when used in the claims, “consisting of,” will refer to the inclusion of exactly one element of a number or list of elements. In general, the term “or” as used herein shall only be interpreted as indicating exclusive alternatives (i.e. “one or the other but not both”) when preceded by terms of exclusivity, such as “either,” “one of,” “only one of,” or “exactly one of” “Consisting essentially of,” when used in the claims, shall have its ordinary meaning as used in the field of patent law.
As used herein in the specification and in the claims, the phrase “at least one,” in reference to a list of one or more elements, should be understood to mean at least one element selected from any one or more of the elements in the list of elements, but not necessarily including at least one of each and every element specifically listed within the list of elements and not excluding any combinations of elements in the list of elements. This definition also allows that elements may optionally be present other than the elements specifically identified within the list of elements to which the phrase “at least one” refers, whether related or unrelated to those elements specifically identified. Thus, as a non-limiting example, “at least one of A and B” (or, equivalently, “at least one of A or B,” or, equivalently “at least one of A and/or B”) can refer, in one embodiment, to at least one, optionally including more than one, A, with no B present (and optionally including elements other than B); in another embodiment, to at least one, optionally including more than one, B, with no A present (and optionally including elements other than A); in yet another embodiment, to at least one, optionally including more than one, A, and at least one, optionally including more than one, B (and optionally including other elements); etc.
It should also be understood that, unless clearly indicated to the contrary, in any methods claimed herein that include more than one step or act, the order of the steps or acts of the method is not necessarily limited to the order in which the steps or acts of the method are recited.
In the claims, as well as in the specification above, all transitional phrases such as “comprising,” “including,” “carrying,” “having,” “containing,” “involving,” “holding,” “composed of,” and the like are to be understood to be open-ended, i.e., to mean including but not limited to. Only the transitional phrases “consisting of” and “consisting essentially of” shall be closed or semi-closed transitional phrases, respectively, as set forth in the United States Patent Office Manual of Patent Examining Procedures, Section 2111.03. It should be understood that certain expressions and reference signs used in the claims pursuant to Rule 6.2(b) of the Patent Cooperation Treaty (“PCT”) do not limit the scope.
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