Spray arm monitoring for a dishwasher appliance

Abstract

A method of operating a smart kitchen appliance and a dishwasher where the smart kitchen appliance comprising a microphone for monitoring sounds generated around the smart kitchen appliance and a communication module in operative communication with a remote appliance. The method includes determining that the dishwasher is performing a cleaning procedure, obtaining a sound signal using the microphone, identifying an adverse operating condition of the remote appliance by determining that the sound signal corresponds to a predetermined sound signal, and implementing a responsive action in response to identifying the adverse operating condition.

Description

FIELD OF THE INVENTION

[0001] The present subject matter relates generally to dishwasher appliances, and more particularly, to systems and methods for monitoring a spray arm of a dishwasher appliance.BACKGROUND OF THE INVENTION

[0002] Dishwasher appliances generally include a tub that defines a wash chamber. Rack assemblies can be mounted within the wash chamber of the tub for receipt of articles for washing. Wash fluid (e.g., various combinations of water and detergent along with optional additives) may be introduced into the tub where it collects in a sump space at the bottom of the wash chamber. During wash and rinse cycles, a pump may be used to circulate wash fluid to spray assemblies within the wash chamber that can apply or direct wash fluid towards articles disposed within the rack assemblies in order to clean such articles. During a drain cycle, a pump may periodically discharge soiled wash fluid that collects in the sump space and the process may be repeated.

[0003] Notably, conventional spray arms may periodically become stuck or stop rotating, e.g., due to improper loading of dishes or other mechanical issues. Notably, if spray arms are not properly rotating during a wash cycle, cleaning performance may be negatively impacted. Yet, conventional dishwashing appliances do not have devices or components that are capable of detecting a stuck spray arm, resulting in poor wash performance and consumer dissatisfaction.

[0004] Accordingly, a dishwasher appliance with an improved means for detecting stuck spray arms is desired. More specifically, a dishwasher appliance that can identify a stuck spray arm without additional components / costs based on information received from another appliance would be particularly beneficial.BRIEF DESCRIPTION OF THE INVENTION

[0005] Aspects and advantages of the invention will be set forth in part in the following description, or may be obvious from the description, or may be learned through practice of the invention.

[0006] In one exemplary embodiment, a smart kitchen appliance is provided including a microphone for monitoring sounds generated around the smart kitchen appliance, a communication module in operative communication with a remote appliance, and a controller configured to determine that the remote appliance is performing a procedure, obtain a sound signal using the microphone, identify an adverse operating condition of the remote appliance by determining that the sound signal corresponds to a predetermined sound signature, and implement a responsive action in response to identifying the adverse operating condition.

[0007] In another exemplary embodiment, a dishwasher appliance is provided including a wash tub defining a wash chamber, a spray arm rotatably mounted within the wash tub for selectively rotating and spraying a flow of wash fluid within the wash chamber, a pump assembly for selectively urging a flow of wash fluid, a communication module in operative communication with a remote kitchen appliance, the remote kitchen appliance comprising a microphone for monitoring sounds generated around the remote kitchen appliance, and a controller in operative communication with the communication module. The controller is configured to operate the pump assembly to provide the flow of wash fluid to the spray arm and rotate the spray arm, obtain a notification of an adverse operating condition from the remote kitchen appliance, the adverse operating condition being identified when a sound signal obtained by the microphone of the remote kitchen appliance corresponds to a predetermined sound signature, and implement a responsive action in response to obtaining the notification of the adverse operating condition.

[0008] These and other features, aspects and advantages of the present invention will become better understood with reference to the following description and appended claims. The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.BRIEF DESCRIPTION OF THE DRAWINGS

[0009] A full and enabling disclosure of the present invention, including the best mode thereof, directed to one of ordinary skill in the art, is set forth in the specification, which makes reference to the appended figures.

[0010] FIG. 1 provides a schematic view of a plurality of appliances connected to a remote server through an external network according to an example embodiment of the present subject matter.

[0011] FIG. 2 provides a cross-sectional side view of a dishwashing appliance of FIG. 1 according to an example embodiment of the present disclosure.

[0012] FIG. 3 illustrates a method for operating the plurality of appliances of FIG. 1 in accordance with one embodiment of the present disclosure.

[0013] Repeat use of reference characters in the present specification and drawings is intended to represent the same or analogous features or elements of the present invention.DETAILED DESCRIPTION

[0014] Reference now will be made in detail to embodiments of the invention, one or more examples of which are illustrated in the drawings. Each example is provided by way of explanation of the invention, not limitation of the invention. In fact, it will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the scope or spirit of the invention. For instance, features illustrated or described as part of one embodiment can be used with another embodiment to yield a still further embodiment. Thus, it is intended that the present invention covers such modifications and variations as come within the scope of the appended claims and their equivalents.

[0015] As used herein, the terms “first,”“second,” and “third” may be used interchangeably to distinguish one component from another and are not intended to signify location or importance of the individual components. The terms “includes” and “including” are intended to be inclusive in a manner similar to the term “comprising.” Similarly, the term “or” is generally intended to be inclusive (i.e., “A or B” is intended to mean “A or B or both”). In addition, here and throughout the specification and claims, range limitations may be combined and / or interchanged. Such ranges are identified and include all the sub-ranges contained therein unless context or language indicates otherwise. For example, all ranges disclosed herein are inclusive of the endpoints, and the endpoints are independently combinable with each other. The singular forms “a,”“an,” and “the” include plural references unless the context clearly dictates otherwise.

[0016] Approximating language, as used herein throughout the specification and claims, may be applied to modify any quantitative representation that could permissibly vary without resulting in a change in the basic function to which it is related. Accordingly, a value modified by a term or terms, such as “generally,”“about,”“approximately,” and “substantially,” are not to be limited to the precise value specified. In at least some instances, the approximating language may correspond to the precision of an instrument for measuring the value, or the precision of the methods or machines for constructing or manufacturing the components and / or systems. For example, the approximating language may refer to being within a 10 percent margin, i.e., including values within ten percent greater or less than the stated value. In this regard, for example, when used in the context of an angle or direction, such terms include within ten degrees greater or less than the stated angle or direction, e.g., “generally vertical” includes forming an angle of up to ten degrees in any direction, e.g., clockwise or counterclockwise, with the vertical direction V.

[0017] The word “exemplary” is used herein to mean “serving as an example, instance, or illustration.” In addition, references to “an embodiment” or “one embodiment” does not necessarily refer to the same embodiment, although it may. Any implementation described herein as “exemplary” or “an embodiment” is not necessarily to be construed as preferred or advantageous over other implementations. Moreover, each example is provided by way of explanation of the invention, not limitation of the invention. In fact, it will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the scope of the invention. For instance, features illustrated or described as part of one embodiment can be used with another embodiment to yield a still further embodiment. Thus, it is intended that the present invention covers such modifications and variations as come within the scope of the appended claims and their equivalents.

[0018] Aspects of the present subject matter are generally directed to a method of automated detection / correction of a stuck spray-arm in a dishwasher. For example, integrating smart technology into kitchen appliances, such as refrigerators, to assist in the maintenance and optimal functioning of nearby dishwashers. Specifically, sound detection may be used to identify when a dishwasher's spray arm is stuck or not functioning properly, ultimately improving the dishwasher's efficiency and reducing the likelihood of missed or incomplete cleaning cycles. This concept introduces a smart kitchen appliance, such as a refrigerator, equipped with a built-in microphone to detect stuck spray arms on nearby dishwasher. By integrating with the dishwasher via local Wi-Fi or Bluetooth Low Energy (BLE), the appliance can determine when a wash cycle is active and compare the expected sounds to actual acoustic signatures. Bluetooth signal strength may be employed to assess the proximity of the dishwasher, ensuring the device listens only when the dishwasher is nearby. Additionally, data may be sent to a cloud-based database of recorded sound profiles from various dishwasher models.

[0019] According to an example embodiment, integration of a microphone within the appliance, where the microphone and appliance are designed to detect the distinct sounds of a dishwasher's spray arm in motion. For example, spray arms, when functioning properly, produce a rising and falling sound at spin frequency as water strikes the tub walls. If the spray arm becomes stuck due to improper loading or a mechanical issue, the microphone picks up the resulting abnormal sound patterns, which may be flagged by the system as potential malfunctions.

[0020] The system can connect to the dishwasher through local Wi-Fi or Bluetooth Low Energy (BLE). Proximity detection through Bluetooth signal strength may be used to ensure that the smart appliance only listens for dishwasher activity when it is close enough to reliably pick up its sounds. This prevents false positives from distant appliances or environmental noise that could interfere with accurate monitoring. The monitoring appliance might also use a calibration sound (e.g., beeping of buttons, etc.) to normalize its reference.

[0021] The system may utilize cloud-based sound profiling, where recordings of various dishwasher models are stored in a central database. By comparing the real-time audio captured by the appliance with the sound profiles from the cloud, the system can precisely identify anomalies against the expected sounds. This could be via a trained machine learning model, an embeddings comparison, or other anomaly detection algorithm. The monitoring appliance may be notified by the dishwasher each time a cycle starts so that it begins active listening using these models.

[0022] If a stuck spray arm is detected, the monitoring appliances may send an alert to the dishwasher which it is programed to react to. Its reaction may be to confirm a stuck spray arm through a test sequence, perhaps turning the pump off and then on and waiting for a second “listen,” or it may go straight into an alternative cycle. If the dishwasher model has a reversing spray arm, it may begin reversing cycle directions frequently to improve the wash performance. For a traditional (e.g., single direction) spray arm, the spray arm may pulse the pump or perform additional drain / fills.

[0023] In either case the user may be notified of the issue as well. They may need to clear an obstruction (or avoid obstructing it next time) or have the appliance serviced. Service may also be notified if this is a recurrent issue, which suggests a locked arm that may need to be serviced. In addition, as an expansion or alternative, this method might also be used to listen for main pump, drain pump, or dry-fan issues during relevant portions of the cycle.

[0024] Referring now to FIG. 1, a system of appliances 50 will be described according to exemplary embodiments of the present subject matter. In general, system of appliances 50 may include any suitable number, type, and configuration of appliances, remote servers, network devices, and / or other external devices. Some of these appliances 50 may be able to communicate with each other or are otherwise interconnected. This interconnection, interlinking, and interoperability of multiple appliances and / or devices may commonly be referred to as “smart home” or “connected home” appliance interconnectivity.

[0025] FIG. 1 illustrates system of appliances 50 according to exemplary embodiments of the present subject matter. As shown, system of appliances 50 generally includes a first appliance (e.g., illustrated herein as a refrigerator 52) and a second appliance (e.g., illustrated herein as a dishwashing appliance 54). Details regarding the operation of refrigerator appliance 52 and dishwashing appliance 54 may be understood by one having ordinary skill in the art and detailed discussion is omitted herein for brevity. However, it should be appreciated that the specific appliance types and configurations are only exemplary and are provided to facilitate discussion regarding the use and operation of an exemplary system of appliances 50. The scope of the present subject matter is not limited to the number, type, and configurations of appliances set forth herein.

[0026] For example, the system of appliances 50 may include any suitable number and type of “appliances,” such as “household appliances.” These terms are used herein to describe appliances typically used or intended for common domestic tasks, e.g., such as the appliances as illustrated in the figures. According to still other embodiments, these “appliances” may include but are not limited to a laundry appliance, a microwave oven, a cooktop, an oven, a washing machine, a dryer, a refrigerator, a water heater, a water filter or purifier, an air conditioner, a space heater, and any other household appliance which performs similar functions. Moreover, although only three appliances are illustrated, various embodiments of the present subject matter may also include another number of appliances.

[0027] In addition, it should be appreciated that system of appliances 50 may include one or more external devices, e.g., devices that are separate from or external to the one or more appliances, and which may be configured for facilitating communications with various appliances or other devices. For example, according to exemplary embodiments of the present subject matter, the system of appliances 50 may include or be communicatively coupled with a remote user interface device 60 that may be configured to enable user interaction with some or all appliances or other devices in the system of appliances 50.

[0028] In general, remote user interface device 60 may be any suitable device separate and apart from appliances (e.g., such as refrigerator appliance 52 and dishwashing appliance 54) that is configured to provide and / or receive communications, information, data, or commands from a user. In this regard, remote user interface device 60 may be an additional user interface to the user interface panels of the various appliances within the system of appliances 50. In this regard, for example, the user interface device 60 may be a personal phone, a smartphone, a tablet, a laptop or personal computer, a wearable device, a smart home system, or another mobile or remote device. For example, the separate device may be a smartphone operable to store and run applications, also known as “apps,” and the remote user interface device 60 be provided as a smartphone app.

[0029] In addition, as will be described in more detail below, some or all of the system of appliances 50 may include or be communicatively coupled with a remote server 62 that may be in operative communication with remote user interface device 60 and / or some or all appliances within system of appliances 50. Thus, user interface device 60 and / or remote server 62 may refer to one or more devices that are not considered household appliances as used herein. In addition, devices such as a personal computer, router, network devices, and other similar devices whose primary functions are network communication and / or data processing are not considered household appliances as used herein.

[0030] As illustrated, each of refrigerator appliance 52, dishwashing appliance 54, remote user interface device 60, or any other devices or appliances in system of appliances 50 may include or be operably coupled to a controller, identified herein generally by reference numeral 70. As used herein, the terms “processing device,”“computing device,”“controller,” or the like may generally refer to any suitable processing device, such as a general or special purpose microprocessor, a microcontroller, an integrated circuit, an application specific integrated circuit (ASIC), a digital signal processor (DSP), a field-programmable gate array (FPGA), a logic device, one or more central processing units (CPUs), a graphics processing units (GPUs), processing units performing other specialized calculations, semiconductor devices, etc. In addition, these “controllers” are not necessarily restricted to a single element but may include any suitable number, type, and configuration of processing devices integrated in any suitable manner to facilitate appliance operation. Alternatively, controller 70 may be constructed without using a microprocessor, e.g., using a combination of discrete analog and / or digital logic circuitry (such as switches, amplifiers, integrators, comparators, flip-flops, AND / OR gates, and the like) to perform control functionality instead of relying upon software.

[0031] Controller 70 may include, or be associated with, one or more memory elements or non-transitory computer-readable storage mediums, such as RAM, ROM, EEPROM, EPROM, flash memory devices, magnetic disks, or other suitable memory devices (including combinations thereof). These memory devices may be a separate component from the processor or may be included onboard within the processor. In addition, these memory devices can store information and / or data accessible by the one or more processors, including instructions that can be executed by the one or more processors. It should be appreciated that the instructions can be software written in any suitable programming language or can be implemented in hardware. Additionally, or alternatively, the instructions can be executed logically and / or virtually using separate threads on one or more processors.

[0032] For example, controller 70 may be operable to execute programming instructions or micro-control code associated with an operating cycle of an appliance. In this regard, the instructions may be software or any set of instructions that when executed by the processing device, cause the processing device to perform operations, such as running one or more software applications, displaying a user interface, receiving user input, processing user input, etc. Moreover, it should be noted that controller 70 as disclosed herein is capable of and may be operable to perform any methods, method steps, or portions of methods as disclosed herein. For example, in some embodiments, methods disclosed herein may be embodied in programming instructions stored in the memory and executed by controller 70. The memory devices may also store data that can be retrieved, manipulated, created, or stored by the one or more processors or portions of controller 70. The data can include, for instance, data to facilitate performance of methods described herein. The data can be stored locally (e.g., on controller 70) in one or more databases and / or may be split up so that the data is stored in multiple locations. In addition, or alternatively, the one or more database(s) can be connected to controller 70 through any suitable communication module, communication lines, or network(s).

[0033] Referring still to FIG. 1, a schematic diagram of an external communication system 80 will be described according to an exemplary embodiment of the present subject matter. In general, external communication system 80 is configured for permitting interaction, data transfer, and other communications between and among refrigerator appliance 52, dishwashing appliance 54, remote user interface device 60, remote server 62, other appliances within system of appliances 50, and / or one or more external devices. For example, this communication may be used to provide and receive operating parameters, cycle settings, user instructions or notifications, performance characteristics, user preferences, or any other suitable information for improved performance of one or more appliances within system of appliances 50. In addition, it should be appreciated that external communication system 80 may be used to transfer data or other information to improve performance of one or more external devices or appliances and / or improve user interaction with such devices.

[0034] In addition, remote server 62 may be in communication with an appliance and / or remote user interface device 60 through a network 82. In this regard, for example, remote server 62 may be a cloud-based server 62, and is thus located at a distant location, such as in a separate state, country, etc. According to an exemplary embodiment, remote user interface device 60 may communicate with a remote server 62 over network 82, such as the Internet, to transmit / receive data or information, provide user inputs, receive user notifications or instructions, interact with or control the appliance, etc. In addition, remote user interface device 60 and remote server 62 may communicate with the appliance to communicate similar information.

[0035] In general, communication between an appliance, remote user interface device 60, remote server 62, and / or other user devices or appliances may be carried using any type of wired or wireless connection and using any suitable type of communication network, non-limiting examples of which are provided below. For example, remote user interface device 60 may be in direct or indirect communication with the appliance through any suitable wired or wireless communication connections or interfaces, such as network 82. For example, network 82 may include one or more of a local area network (LAN), a wide area network (WAN), a personal area network (PAN), the Internet, a cellular network, any other suitable short-or long-range wireless networks, etc. In addition, communications may be transmitted using any suitable communications devices or protocols, such as via Wi-Fi®, Bluetooth®, Zigbee®, wireless radio, laser, infrared, Ethernet type devices and interfaces, etc. In addition, such communication may use a variety of communication protocols (e.g., TCP / IP, HTTP, SMTP, FTP), encodings or formats (e.g., HTML, XML), and / or protection schemes (e.g., VPN, secure HTTP, SSL).

[0036] External communication system 80 is described herein according to an exemplary embodiment of the present subject matter. However, it should be appreciated that the exemplary functions and configurations of external communication system 80 provided herein are used only as examples to facilitate description of aspects of the present subject matter. System configurations may vary, other communication devices may be used to communicate directly or indirectly with one or more associated appliances, other communication protocols and steps may be implemented, etc. These variations and modifications are contemplated as within the scope of the present subject matter.

[0037] Referring now to FIGS. 1 and 2 depict an exemplary domestic dishwashing appliance or dishwasher 54 that may be configured in accordance with aspects of the present disclosure. For the particular embodiment of FIGS. 1 and 2, the dishwasher 54 includes a cabinet 102 having a tub 104 therein that defines a wash chamber 106. As shown, tub 104 extends between a top 107 and a bottom 108 along a vertical direction V, between a pair of side walls 110 along a lateral direction L, and between a front side 111 and a rear side 112 along a transverse direction T. Each of the vertical direction V, lateral direction L, and transverse direction T are mutually orthogonal to one another.

[0038] The tub 104 includes a front opening 114 and a door 116 hinged at its bottom for movement between a normally closed vertical position (shown in FIG. 2), wherein the wash chamber 106 is sealed shut for washing operation, and a horizontal open position for loading and unloading of articles from the dishwasher 54. According to exemplary embodiments, dishwasher 54 further includes a door closure mechanism or assembly 118 that is used to lock and unlock door 116 for accessing and sealing wash chamber 106.

[0039] As illustrated in FIG. 2, tub side walls 110 may accommodate a plurality of rack assemblies. More specifically, guide rails 120 may be mounted to side walls 110 for supporting a lower rack assembly 122, a middle rack assembly 124, and an upper rack assembly 126. As illustrated, upper rack assembly 126 is positioned at a top portion of wash chamber 106 above middle rack assembly 124, which is positioned above lower rack assembly 122 along the vertical direction V. Each rack assembly 122, 124, 126 is adapted for movement between an extended loading position (not shown) in which the rack is substantially positioned outside the wash chamber 106, and a retracted position (shown in FIGS. 1 and 2) in which the rack is located inside the wash chamber 106. This is facilitated, for example, by rollers 128 mounted onto rack assemblies 122, 124, 126, respectively. Although a guide rails 120 and rollers 128 are illustrated herein as facilitating movement of the respective rack assemblies 122, 124, 126, it should be appreciated that any suitable sliding mechanism or member may be used according to alternative embodiments.

[0040] Some or all of the rack assemblies 122, 124, 126 are fabricated into lattice structures including a plurality of wires or elongated members 130 (for clarity of illustration, not all elongated members making up rack assemblies 122, 124, 126 are shown in FIG. 2). In this regard, rack assemblies 122, 124, 126 are generally configured for supporting articles within wash chamber 106 while allowing a flow of wash fluid to reach and impinge on those articles (e.g., during a cleaning or rinsing cycle). According to another exemplary embodiment, a silverware basket (not shown) may be removably attached to a rack assembly (e.g., lower rack assembly 122) for placement of silverware, utensils, and the like, that are otherwise too small to be accommodated by rack 122.

[0041] Dishwasher 54 further includes a plurality of spray assemblies for urging a flow of water or wash fluid onto the articles placed within wash chamber 106. More specifically, as illustrated in FIG. 2, dishwasher 54 includes a lower spray arm assembly 134 disposed in a lower region 136 of wash chamber 106 and above a sump 138 so as to rotate in relatively close proximity to lower rack assembly 122. Similarly, a mid-level spray arm assembly 140 is located in an upper region of wash chamber 106 and may be located below and in close proximity to middle rack assembly 124. In this regard, mid-level spray arm assembly 140 may generally be configured for urging a flow of wash fluid up through middle rack assembly 124 and upper rack assembly 126. Additionally, an upper spray assembly 142 may be located above upper rack assembly 126 along the vertical direction V. In this manner, upper spray assembly 142 may be configured for urging or cascading a flow of wash fluid downward over rack assemblies 122, 124, and 126. As further illustrated in FIG. 2, upper rack assembly 126 may further define an integral spray manifold 144, which is generally configured for urging a flow of wash fluid substantially upward along the vertical direction V through upper rack assembly 126.

[0042] The various spray assemblies and manifolds described herein may be part of a fluid distribution system or fluid circulation assembly 150 for circulating water and wash fluid in the tub 104. More specifically, fluid circulation assembly 150 includes a pump assembly 152 for circulating water or wash fluid (e.g., detergent, water, or rinse aid) in the tub 104. For example, pump assembly 152 may include a pump motor 153 that drives pump assembly 152 to circulate or discharge wash fluid. Pump assembly 152 may be located within sump 138 or within a machinery compartment located below sump 138 of tub 104, as generally recognized in the art. Fluid circulation assembly 150 may include one or more fluid conduits or circulation piping for directing water or wash fluid from pump assembly 152 to the various spray assemblies and manifolds. For example, as illustrated in FIG. 2, a primary supply conduit 154 may extend from pump assembly 152, along rear 112 of tub 104 along the vertical direction V to supply wash fluid throughout wash chamber 106.

[0043] As illustrated, primary supply conduit 154 is used to supply wash fluid to one or more spray assemblies (e.g., to mid-level spray arm assembly 140 and upper spray assembly 142). However, it should be appreciated that according to alternative embodiments, any other suitable plumbing configuration may be used to supply wash fluid throughout the various spray manifolds and assemblies described herein. For example, according to another exemplary embodiment, primary supply conduit 154 could be used to provide wash fluid to mid-level spray arm assembly 140 and a dedicated secondary supply conduit (not shown) could be utilized to provide wash fluid to upper spray assembly 142. Other plumbing configurations may be used for providing wash fluid to the various spray devices and manifolds at any location within dishwashing appliance 54.

[0044] Each spray arm assembly 134, 140, 142, integral spray manifold 144, or other spray device may include an arrangement of discharge ports or orifices for directing wash fluid received from pump assembly 152 onto dishes or other articles located in wash chamber 106. The arrangement of the discharge ports, also referred to as jets, apertures, or orifices, may provide a rotational force by virtue of wash fluid flowing through the discharge ports. Alternatively, spray arm assemblies 134, 140, 142 may be motor-driven, or may operate using any other suitable drive mechanism. Spray manifolds and assemblies may also be stationary. The resultant movement of the spray arm assemblies 134, 140, 142 and the spray from fixed manifolds provides coverage of dishes and other dishwasher contents with a washing spray. Other configurations of spray assemblies may be used as well. For example, dishwasher 54 may have additional spray assemblies for cleaning silverware, for scouring casserole dishes, for spraying pots and pans, for cleaning bottles, etc. One skilled in the art will appreciate that the embodiments discussed herein are used for the purpose of explanation only and are not limitations of the present subject matter.

[0045] In operation, pump assembly 152 draws wash fluid in from sump 138 and pumps it to a diverter assembly 156 (e.g., which may be positioned within sump 138 of dishwashing appliance 54). Diverter assembly 156 may include a diverter disk (not shown) disposed within a diverter chamber 158 for selectively distributing the wash fluid to the spray arm assemblies 134, 140, 142 or other spray manifolds or devices. For example, the diverter disk may have a plurality of apertures that are configured to align with one or more outlet ports (not shown) at the top of diverter chamber 158. In this manner, the diverter disk may be selectively rotated to provide wash fluid to the desired spray device.

[0046] According to an exemplary embodiment, diverter assembly 156 is configured for selectively distributing the flow of wash fluid from pump assembly 152 to various fluid supply conduits, only some of which are illustrated in FIG. 2 for clarity. More specifically, diverter assembly 156 may include four outlet ports (not shown) for supplying wash fluid to a first conduit for rotating lower spray arm assembly 134 in the clockwise direction, a second conduit for rotating lower spray arm assembly 134 in the counter-clockwise direction, a third conduit for spraying an auxiliary rack such as the silverware rack, and a fourth conduit for supply mid-level or upper spray assemblies 140, 142 (e.g., such as primary supply conduit 154).

[0047] It should be appreciated that the invention is not limited to any particular style, model, or configuration of dishwasher 54. The exemplary embodiment depicted in FIGS. 1 and 2 is for illustrative purposes only. For example, different locations may be provided for user interface 164, different configurations may be provided for rack assemblies 122, 124, 126, different spray arm assemblies 134, 140, 142 and spray manifold configurations may be used, and other differences may be applied while remaining within the scope of the present subject matter. Moreover, aspects of the present subject matter may be applied to other appliances as well, such as refrigerators, ovens, microwaves, etc.

[0048] Referring now generally to FIGS. 1 and 2, door 116 will be described according to exemplary embodiments of the present subject matter. Although door 116 is described herein as being used with dishwasher 54, it should be appreciated that door 116 or variations thereof may be used on any other suitable residential or commercial appliance. As described herein, door 116 may share a coordinate system with dishwasher 54, e.g., when door 116 is in the closed position (e.g., as shown in FIG. 2). Specifically, door 116 may define a vertical direction V, a lateral direction L, and a transverse direction T. Therefore, these directions may be used herein to refer to features of door 116 and its various components and sub-assemblies.

[0049] As shown, in the normally closed position, door 116 extends from a top end or top edge 180 to a bottom end or bottom edge 182 along the vertical direction V; from a front end 184 to a rear end 186 along the transverse direction T; and between two lateral ends 188 along the lateral direction L. According to exemplary embodiments, door 116 may be formed from one or more exterior panels that define an interior chamber of door 116. According to exemplary embodiments, the exterior panels of door 116 may be panels that are stamped from stainless steel or may be formed from any other suitably rigid material, such as thermoformed plastic, other metals, etc. In general, the exterior panels of door 116 may be assembled in any suitable manner, e.g., may be secured together using any suitable mechanical fastener, welding, snap-fit mechanisms, etc. In addition, it should be appreciated that an insulating material (not shown), such as fiberglass or foam insulation, may be positioned within door 116 to provide thermal and / or sound insulation to dishwasher 54.

[0050] Referring still to FIGS. 1 and 2, user interface panel 164 is positioned proximate top edge 180 of door 116 along the vertical direction V. In this manner, user interface panel 164 may be partially hidden below a countertop when dishwashing appliance 54 is installed below the countertop and door 116 is closed. Accordingly, dishwashing appliance 54 may be referred to as a “top control dishwasher appliance.” However, it should be appreciated that aspects of the present subject matter may be used with dishwasher appliances having other configurations or any other suitable appliance. For example, user interface panel 164 may be alternately positioned on front face or front end 184 of door 116.

[0051] User interface panel 164 is positioned on door 116 such that a user can engage or interact with user interface panel 164, e.g., to select operating cycles and parameters, activate / deactivate operating cycles, or adjust other operating parameters of dishwashing appliance 54. User interface panel 164 may include a printed circuit board (not shown) that is positioned within door 116. According to exemplary embodiments, printed circuit board may include or be operatively coupled to controller 70 and / or user interface panel 164. In addition, user interface panel 164 may include or be operably coupled to one or more user inputs or touch buttons (e.g., identified generally herein as user inputs 166) for receiving user input, providing user notifications, or illuminating to indicate cycle or operating status.

[0052] Specifically, according to the illustrated embodiment, user inputs 166 include a plurality of capacitive sensors that are mounted to user interface panel 164 and are operable to detect user inputs. For example, these capacitive sensors may be configured for triggering when a user touches a top edge 180 of user interface panel 164 in a region associated with a particular user input 166. In particular, these capacitive sensors can detect when a finger or another conductive material with a dielectric different than air contacts or approaches user interface panel 164, along with the precise location, pressure, etc. of the finger interaction.

[0053] When a user touches top edge 180 of user interface panel 164 adjacent one of user inputs 166, the associated capacitive sensors may be triggered and may communicate a corresponding signal to controller 70. In such a manner, operations of dishwashing appliance 54 can be initiated and controlled. According to exemplary embodiments, the capacitive sensors may be distributed laterally on user interface panel 164. It will be understood that other any suitable number, type, and position of capacitive sensors may be used while remaining within the scope of the present subject matter. Indeed, any suitable number, type, and configuration of user inputs 166 may be used while remaining within the scope of the present subject matter.

[0054] User interface panel 164 may define a plurality of surfaces that are intended to be illuminated for various purposes. For example, user inputs 166 may be illuminated by light sources to inform the user of the location of the button or to provide some other status indication. Notably, this illumination is typically achieved by directing a light beam along the vertical direction V onto top edge 180 of user interface panel 164. Door 116 may further include a plurality of light sources or lighting devices that are configured for illuminating one or more surfaces of user interface panel 164. It should be appreciated that these light sources may include any suitable number, type, configuration, and orientation of light sources mounted at any suitable location to illuminate status indicators or buttons in any suitable colors, sizes, patterns, etc. In other words, the light sources may be provided as any suitable number, type, position, and configuration of electrical light source(s), using any suitable light technology and illuminating in any suitable color. For example, the light sources may include one or more light emitting diodes (LEDs), which may each illuminate in a single color (e.g., white LEDs), or which may each illuminate in multiple colors (e.g., multi-color or RGB LEDs) depending on the control signal from controller 70.

[0055] However, it should be appreciated that according to alternative embodiments, the light sources may include any other suitable traditional light bulbs or sources, such as halogen bulbs, fluorescent bulbs, incandescent bulbs, glow bars, a fiber light source, etc. Moreover, the light sources may be operably coupled (e.g., electrically coupled) to controller 70 or another suitable control board to facilitate activation or illumination of the light sources (e.g., to indicate a user input, state of the dishwasher appliance, state of the wash cycle, or any other relevant information to a user).

[0056] According to exemplary embodiments, user interface panel 164 may be any suitable transparent or semitransparent feature for diffusing, directing, or otherwise transmitting light from a light source. For example, user interface panel 164 may be formed from a suitable transparent or translucent material configured to direct light energy, such as a dielectric material, such as glass or plastic, polycarbonate, polypropylene, polyacrylic, or any other suitable material.

[0057] In addition, user interface panel 164 may be a dead fronted panel. As used herein, the term “dead front” and the like is generally intended to refer to portions of a control panel which may be used as indicators, buttons, interactive control surfaces, or other user-interaction features without exposing the user to the operating side of the equipment or live parts and connections, i.e., lights, electrical connections, etc. For example, user interface panel 164 may include a transparent or translucent body and an opaque masking material that is selectively printed on top edge 180 of the translucent body to define capacitive touch buttons or user inputs 166.

[0058] The opaque material may be deposited on the translucent body to define any suitable number, size, and configuration of illuminated features. These illuminated features may be shapes or include other forms such as symbols, words, etc. that are visible on user interface panel 164. More specifically, when light sources are energized, capacitive touch buttons or user inputs 166 on top edge 180 may be illuminated. Thus, the dead fronted top edge 180 may be the surface that is contacted for controlling dishwashing appliance 54 or which may be illuminated for purposes of indicating operating status or other conditions to the user of the dishwashing appliance 54.

[0059] As noted briefly above, one or more spray arm assemblies (e.g., lower spray arm assembly 134, mid-level spray arm assembly 140, or upper spray arm assembly 142) may periodically become stuck or lock up, e.g., due to articles placed in the dishwasher that block or prevent their rotation. Notably, if spray arms are not properly rotating during a wash cycle, cleaning performance may be negatively impacted. Accordingly, aspects of the present subject matter are generally directed to methods for detecting stuck spray arms. For example, one manner of detecting a stuck spray arm may be monitoring sound generated during operation of spray arm assemblies.

[0060] Accordingly, system of appliances 50 may include a microphone 190 that is positioned at any suitable location within the vicinity of dishwashing appliance 54 for monitoring sound generated by dishwashing appliance 54. For example, according to the illustrated embodiment, microphone 190 may be mounted on refrigerator appliance 52. In this regard, conventional refrigerator appliances commonly include built-in microphones for purposes of user interaction. However, conventional dishwashers do not include microphones because they typically do not provide enough value in a dishwasher to justify the costs. Accordingly, microphone 190 of refrigerator appliance 52 (which is positioned in the vicinity of dishwasher 54) may facilitate performance improvements to dishwasher 54 without additional costs.

[0061] According to still other embodiments, microphone 190 may be mounted to another appliance within system of appliances 50 or could be a standalone microphone mounted within the kitchen. In general, microphone 190 may be used for monitoring the sound waves, noises, or other vibrations generated during the operation of dishwashing appliance 54. For example, microphone 190 may be one or more microphones, acoustic detection devices, vibration sensors, or any other suitable acoustic transducers that are positioned at one or more locations in or around dishwashing appliance 54.

[0062] Now that the construction of dishwashing appliance 54 according to exemplary embodiments have been presented, an exemplary method 200 of operating a dishwasher appliance will be described. Although the discussion below refers to the exemplary method 200 of operating dishwashing appliance 54, one skilled in the art will appreciate that the exemplary method 200 is applicable to the operation of a variety of other dishwasher appliances and spray arms on any other suitable appliance.

[0063] In exemplary embodiments, the various method steps as disclosed herein may be performed by controller 70 or a separate, dedicated controller. In this regard, as described herein, controller 70 of dishwashing appliance 54 may implement all steps of method 200. However, it should be appreciated that according to alternative embodiments, controller 70 may offload the analysis described herein, e.g., by sending sound signals to remote server 62 for analysis. Other distributed analysis arrangements are possible and within the scope of the present subject matter.

[0064] As explained above, a system of appliances may include two or more appliances that are in operative communication through a remote network. According to the illustrated example embodiment, the first smart kitchen appliance is a refrigerator appliance including a microphone and a communication module, and the second smart kitchen appliance is a dishwasher that includes a communication module but no microphone. As explained above, the communication modules of the refrigerator appliance and the dishwasher may be in operative communication with each other. For example, the communication modules may communicate using local Wi-Fi or Bluetooth Low Energy (BLE).

[0065] Referring now to FIG. 3, method 200 includes, at step 210, determining that a remote appliance is performing a procedure. For example, continuing the example from above, the refrigerator appliance may utilize its internal microphone to monitor the remote appliance, such as a dishwasher. For example, the dishwasher may be located in the vicinity of the refrigerator, such as in the same kitchen. The refrigerator appliance may perform one or more initialization or appliance detection methods to determine that the dishwasher is nearby and is intended to be monitored. For example, the controller of the refrigerator appliance may obtain a signal strength of the communication between the refrigerator and the dishwasher and may use the signal strength to determine the proximity of the two appliances. Specifically, for example, the controller may obtain a Bluetooth signal strength between the communication module and the remote appliance, determine that the remote appliance is within a predetermined proximity based on the Bluetooth signal strength, and monitor sound signals from the remote appliance in response to determining that the remote appliance is within the predetermined proximity.

[0066] Other means for linking or pairing the two appliances may be used while remaining within the scope of the present subject matter. For example, a user may use a user interface panel of one or both appliances to discover the other appliance and manually request that the appliances communicate with each other. According to still other embodiments, dishwasher may be programmed to generate a specific pairing sound or request upon initial installation, and the refrigerator appliance may use the microphone to hear the request and begin pairing the two appliances.

[0067] After the two devices are paired and the refrigerator appliance is listening to the operation of the dishwasher using the microphone, the refrigerator appliance may go through a training procedure where it uses the microphone to monitor sounds coming from the dishwasher. These sounds may be stored in memory as proper operating sounds. In addition, or alternatively, dishwasher appliance may intentionally make sounds associated with common failures or adverse operating conditions, and the refrigerator appliance may store these sound signatures for later comparison. Other initialization procedures may be used while remaining within the scope of the present subject matter.

[0068] Step 220 may include obtaining a sound signal using the microphone. In this regard, refrigerator appliance may continuously or periodically monitor sounds generated by the dishwasher during operation. For example, at the beginning of a cleaning cycle, the dishwasher may make a predetermined sound to signal the start of the cycle, after which refrigerator may use the microphone to listen for the duration of the operating cycle.

[0069] Step 230 may include identifying an adverse operating condition of the remote appliance by determining that the sound signal corresponds to a predetermined sound signature. In this regard, the refrigerator appliance may compare recorded sound signals to a database of sound signatures associated with operation of the dishwasher. The refrigerator may identify an adverse operating condition when the recorded sound signal matches or corresponds to the predetermined sound signature associated with such an operating condition.

[0070] According to an example embodiment, the adverse operating condition is a stuck spray arm. In this regard, normal operation of a spray arm may generate a sound signal that include periodic noises when the spray of wash fluid strikes a particular portion of the wash tub, contacts a particular dish or article within the dishwasher, etc. If the splashing sound becomes erratic, stops altogether, or becomes consistent, this may indicate that the spray arm has stopped rotating, e.g., due to contact with a dish or other mechanical failure. Upon such an occurrence, the refrigerator may identify the presence of an adverse operating condition.

[0071] Although the example above describes the controller of the refrigerator appliance as storing sound signatures and analyzing sounds recorded by the microphone, it should be appreciated that according to alternative embodiments, another suitable controller or processor may perform such analysis. For example, the refrigerator may transmit the sound signal to a remote server for analysis. The remote server may communicate with the refrigerator and / or the dishwasher when the adverse operating condition is identified. For example, the remote server may contain sound signatures from a plurality of different types and models of remote appliances. In addition, the remote server may associate such sound signatures with proper operating sounds or adverse operating conditions.

[0072] Specifically, step 240 may include implementing a responsive action in response to identifying the adverse operating condition. For example, implementing the responsive action may include notifying the remote appliance of the adverse operating condition. The dishwasher appliance may then perform various actions to check or confirm the existence of the identified operating condition and / or rectify the adverse condition. For example, the dishwasher may operate the pump assembly to pulse the flow of wash fluid through the spray arm or perform additional fill processes. In addition, or alternatively, the dishwasher may perform a test sequence to identify the adverse operating condition, may reverse the rotational direction of the spray arm, etc.

[0073] According to another example embodiment, the dishwasher or the refrigerator may communicate with the user regarding the existence of an adverse operating condition and may recommend corrective action. For example, the controller of the refrigerator, the dishwasher, or the remote server may provide a user notification regarding the adverse operating condition, e.g., via one or more appliance user interfaces or through a remote device. For example, the user notification may state that the spray arm is stuck and recommend that the user adjust one or more articles within the dishwasher, call a service technician, or perform other steps to mitigate the effects of the adverse operating condition.

[0074] FIG. 3 depicts steps performed in a particular order for purposes of illustration and discussion. Those of ordinary skill in the art, using the disclosures provided herein, will understand that the steps of any of the methods discussed herein can be adapted, rearranged, expanded, omitted, or modified in various ways without deviating from the scope of the present disclosure. Moreover, although aspects of method 200 are explained using refrigerator appliance 52 and dishwashing appliance 54 as an example, it should be appreciated that this method may be applied to the operation of any suitable system of appliances including a dishwasher.

[0075] This written description uses examples to disclose the invention, including the best mode, and also to enable any person skilled in the art to practice the invention, including making and using any devices or systems and performing any incorporated methods. The patentable scope of the invention is defined by the claims, and may include other examples that occur to those skilled in the art. Such other examples are intended to be within the scope of the claims if they include structural elements that do not differ from the literal language of the claims, or if they include equivalent structural elements with insubstantial differences from the literal languages of the claims.

Examples

Embodiment Construction

[0014]Reference now will be made in detail to embodiments of the invention, one or more examples of which are illustrated in the drawings. Each example is provided by way of explanation of the invention, not limitation of the invention. In fact, it will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the scope or spirit of the invention. For instance, features illustrated or described as part of one embodiment can be used with another embodiment to yield a still further embodiment. Thus, it is intended that the present invention covers such modifications and variations as come within the scope of the appended claims and their equivalents.

[0015]As used herein, the terms “first,”“second,” and “third” may be used interchangeably to distinguish one component from another and are not intended to signify location or importance of the individual components. The terms “includes” and “including” are...

FIELD OF THE INVENTION

[0001] The present subject matter relates generally to dishwasher appliances, and more particularly, to systems and methods for monitoring a spray arm of a dishwasher appliance.BACKGROUND OF THE INVENTION

[0002] Dishwasher appliances generally include a tub that defines a wash chamber. Rack assemblies can be mounted within the wash chamber of the tub for receipt of articles for washing. Wash fluid (e.g., various combinations of water and detergent along with optional additives) may be introduced into the tub where it collects in a sump space at the bottom of the wash chamber. During wash and rinse cycles, a pump may be used to circulate wash fluid to spray assemblies within the wash chamber that can apply or direct wash fluid towards articles disposed within the rack assemblies in order to clean such articles. During a drain cycle, a pump may periodically discharge soiled wash fluid that collects in the sump space and the process may be repeated.

[0003] Notably, conventional spray arms may periodically become stuck or stop rotating, e.g., due to improper loading of dishes or other mechanical issues. Notably, if spray arms are not properly rotating during a wash cycle, cleaning performance may be negatively impacted. Yet, conventional dishwashing appliances do not have devices or components that are capable of detecting a stuck spray arm, resulting in poor wash performance and consumer dissatisfaction.

[0004] Accordingly, a dishwasher appliance with an improved means for detecting stuck spray arms is desired. More specifically, a dishwasher appliance that can identify a stuck spray arm without additional components / costs based on information received from another appliance would be particularly beneficial.BRIEF DESCRIPTION OF THE INVENTION

[0005] Aspects and advantages of the invention will be set forth in part in the following description, or may be obvious from the description, or may be learned through practice of the invention.

[0006] In one exemplary embodiment, a smart kitchen appliance is provided including a microphone for monitoring sounds generated around the smart kitchen appliance, a communication module in operative communication with a remote appliance, and a controller configured to determine that the remote appliance is performing a procedure, obtain a sound signal using the microphone, identify an adverse operating condition of the remote appliance by determining that the sound signal corresponds to a predetermined sound signature, and implement a responsive action in response to identifying the adverse operating condition.

[0007] In another exemplary embodiment, a dishwasher appliance is provided including a wash tub defining a wash chamber, a spray arm rotatably mounted within the wash tub for selectively rotating and spraying a flow of wash fluid within the wash chamber, a pump assembly for selectively urging a flow of wash fluid, a communication module in operative communication with a remote kitchen appliance, the remote kitchen appliance comprising a microphone for monitoring sounds generated around the remote kitchen appliance, and a controller in operative communication with the communication module. The controller is configured to operate the pump assembly to provide the flow of wash fluid to the spray arm and rotate the spray arm, obtain a notification of an adverse operating condition from the remote kitchen appliance, the adverse operating condition being identified when a sound signal obtained by the microphone of the remote kitchen appliance corresponds to a predetermined sound signature, and implement a responsive action in response to obtaining the notification of the adverse operating condition.

[0008] These and other features, aspects and advantages of the present invention will become better understood with reference to the following description and appended claims. The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.BRIEF DESCRIPTION OF THE DRAWINGS

[0009] A full and enabling disclosure of the present invention, including the best mode thereof, directed to one of ordinary skill in the art, is set forth in the specification, which makes reference to the appended figures.

[0010] FIG. 1 provides a schematic view of a plurality of appliances connected to a remote server through an external network according to an example embodiment of the present subject matter.

[0011] FIG. 2 provides a cross-sectional side view of a dishwashing appliance of FIG. 1 according to an example embodiment of the present disclosure.

[0012] FIG. 3 illustrates a method for operating the plurality of appliances of FIG. 1 in accordance with one embodiment of the present disclosure.

[0013] Repeat use of reference characters in the present specification and drawings is intended to represent the same or analogous features or elements of the present invention.DETAILED DESCRIPTION

[0014] Reference now will be made in detail to embodiments of the invention, one or more examples of which are illustrated in the drawings. Each example is provided by way of explanation of the invention, not limitation of the invention. In fact, it will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the scope or spirit of the invention. For instance, features illustrated or described as part of one embodiment can be used with another embodiment to yield a still further embodiment. Thus, it is intended that the present invention covers such modifications and variations as come within the scope of the appended claims and their equivalents.

[0015] As used herein, the terms “first,”“second,” and “third” may be used interchangeably to distinguish one component from another and are not intended to signify location or importance of the individual components. The terms “includes” and “including” are intended to be inclusive in a manner similar to the term “comprising.” Similarly, the term “or” is generally intended to be inclusive (i.e., “A or B” is intended to mean “A or B or both”). In addition, here and throughout the specification and claims, range limitations may be combined and / or interchanged. Such ranges are identified and include all the sub-ranges contained therein unless context or language indicates otherwise. For example, all ranges disclosed herein are inclusive of the endpoints, and the endpoints are independently combinable with each other. The singular forms “a,”“an,” and “the” include plural references unless the context clearly dictates otherwise.

[0016] Approximating language, as used herein throughout the specification and claims, may be applied to modify any quantitative representation that could permissibly vary without resulting in a change in the basic function to which it is related. Accordingly, a value modified by a term or terms, such as “generally,”“about,”“approximately,” and “substantially,” are not to be limited to the precise value specified. In at least some instances, the approximating language may correspond to the precision of an instrument for measuring the value, or the precision of the methods or machines for constructing or manufacturing the components and / or systems. For example, the approximating language may refer to being within a 10 percent margin, i.e., including values within ten percent greater or less than the stated value. In this regard, for example, when used in the context of an angle or direction, such terms include within ten degrees greater or less than the stated angle or direction, e.g., “generally vertical” includes forming an angle of up to ten degrees in any direction, e.g., clockwise or counterclockwise, with the vertical direction V.

[0017] The word “exemplary” is used herein to mean “serving as an example, instance, or illustration.” In addition, references to “an embodiment” or “one embodiment” does not necessarily refer to the same embodiment, although it may. Any implementation described herein as “exemplary” or “an embodiment” is not necessarily to be construed as preferred or advantageous over other implementations. Moreover, each example is provided by way of explanation of the invention, not limitation of the invention. In fact, it will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the scope of the invention. For instance, features illustrated or described as part of one embodiment can be used with another embodiment to yield a still further embodiment. Thus, it is intended that the present invention covers such modifications and variations as come within the scope of the appended claims and their equivalents.

[0018] Aspects of the present subject matter are generally directed to a method of automated detection / correction of a stuck spray-arm in a dishwasher. For example, integrating smart technology into kitchen appliances, such as refrigerators, to assist in the maintenance and optimal functioning of nearby dishwashers. Specifically, sound detection may be used to identify when a dishwasher's spray arm is stuck or not functioning properly, ultimately improving the dishwasher's efficiency and reducing the likelihood of missed or incomplete cleaning cycles. This concept introduces a smart kitchen appliance, such as a refrigerator, equipped with a built-in microphone to detect stuck spray arms on nearby dishwasher. By integrating with the dishwasher via local Wi-Fi or Bluetooth Low Energy (BLE), the appliance can determine when a wash cycle is active and compare the expected sounds to actual acoustic signatures. Bluetooth signal strength may be employed to assess the proximity of the dishwasher, ensuring the device listens only when the dishwasher is nearby. Additionally, data may be sent to a cloud-based database of recorded sound profiles from various dishwasher models.

[0019] According to an example embodiment, integration of a microphone within the appliance, where the microphone and appliance are designed to detect the distinct sounds of a dishwasher's spray arm in motion. For example, spray arms, when functioning properly, produce a rising and falling sound at spin frequency as water strikes the tub walls. If the spray arm becomes stuck due to improper loading or a mechanical issue, the microphone picks up the resulting abnormal sound patterns, which may be flagged by the system as potential malfunctions.

[0020] The system can connect to the dishwasher through local Wi-Fi or Bluetooth Low Energy (BLE). Proximity detection through Bluetooth signal strength may be used to ensure that the smart appliance only listens for dishwasher activity when it is close enough to reliably pick up its sounds. This prevents false positives from distant appliances or environmental noise that could interfere with accurate monitoring. The monitoring appliance might also use a calibration sound (e.g., beeping of buttons, etc.) to normalize its reference.

[0021] The system may utilize cloud-based sound profiling, where recordings of various dishwasher models are stored in a central database. By comparing the real-time audio captured by the appliance with the sound profiles from the cloud, the system can precisely identify anomalies against the expected sounds. This could be via a trained machine learning model, an embeddings comparison, or other anomaly detection algorithm. The monitoring appliance may be notified by the dishwasher each time a cycle starts so that it begins active listening using these models.

[0022] If a stuck spray arm is detected, the monitoring appliances may send an alert to the dishwasher which it is programed to react to. Its reaction may be to confirm a stuck spray arm through a test sequence, perhaps turning the pump off and then on and waiting for a second “listen,” or it may go straight into an alternative cycle. If the dishwasher model has a reversing spray arm, it may begin reversing cycle directions frequently to improve the wash performance. For a traditional (e.g., single direction) spray arm, the spray arm may pulse the pump or perform additional drain / fills.

[0023] In either case the user may be notified of the issue as well. They may need to clear an obstruction (or avoid obstructing it next time) or have the appliance serviced. Service may also be notified if this is a recurrent issue, which suggests a locked arm that may need to be serviced. In addition, as an expansion or alternative, this method might also be used to listen for main pump, drain pump, or dry-fan issues during relevant portions of the cycle.

[0024] Referring now to FIG. 1, a system of appliances 50 will be described according to exemplary embodiments of the present subject matter. In general, system of appliances 50 may include any suitable number, type, and configuration of appliances, remote servers, network devices, and / or other external devices. Some of these appliances 50 may be able to communicate with each other or are otherwise interconnected. This interconnection, interlinking, and interoperability of multiple appliances and / or devices may commonly be referred to as “smart home” or “connected home” appliance interconnectivity.

[0025] FIG. 1 illustrates system of appliances 50 according to exemplary embodiments of the present subject matter. As shown, system of appliances 50 generally includes a first appliance (e.g., illustrated herein as a refrigerator 52) and a second appliance (e.g., illustrated herein as a dishwashing appliance 54). Details regarding the operation of refrigerator appliance 52 and dishwashing appliance 54 may be understood by one having ordinary skill in the art and detailed discussion is omitted herein for brevity. However, it should be appreciated that the specific appliance types and configurations are only exemplary and are provided to facilitate discussion regarding the use and operation of an exemplary system of appliances 50. The scope of the present subject matter is not limited to the number, type, and configurations of appliances set forth herein.

[0026] For example, the system of appliances 50 may include any suitable number and type of “appliances,” such as “household appliances.” These terms are used herein to describe appliances typically used or intended for common domestic tasks, e.g., such as the appliances as illustrated in the figures. According to still other embodiments, these “appliances” may include but are not limited to a laundry appliance, a microwave oven, a cooktop, an oven, a washing machine, a dryer, a refrigerator, a water heater, a water filter or purifier, an air conditioner, a space heater, and any other household appliance which performs similar functions. Moreover, although only three appliances are illustrated, various embodiments of the present subject matter may also include another number of appliances.

[0027] In addition, it should be appreciated that system of appliances 50 may include one or more external devices, e.g., devices that are separate from or external to the one or more appliances, and which may be configured for facilitating communications with various appliances or other devices. For example, according to exemplary embodiments of the present subject matter, the system of appliances 50 may include or be communicatively coupled with a remote user interface device 60 that may be configured to enable user interaction with some or all appliances or other devices in the system of appliances 50.

[0028] In general, remote user interface device 60 may be any suitable device separate and apart from appliances (e.g., such as refrigerator appliance 52 and dishwashing appliance 54) that is configured to provide and / or receive communications, information, data, or commands from a user. In this regard, remote user interface device 60 may be an additional user interface to the user interface panels of the various appliances within the system of appliances 50. In this regard, for example, the user interface device 60 may be a personal phone, a smartphone, a tablet, a laptop or personal computer, a wearable device, a smart home system, or another mobile or remote device. For example, the separate device may be a smartphone operable to store and run applications, also known as “apps,” and the remote user interface device 60 be provided as a smartphone app.

[0029] In addition, as will be described in more detail below, some or all of the system of appliances 50 may include or be communicatively coupled with a remote server 62 that may be in operative communication with remote user interface device 60 and / or some or all appliances within system of appliances 50. Thus, user interface device 60 and / or remote server 62 may refer to one or more devices that are not considered household appliances as used herein. In addition, devices such as a personal computer, router, network devices, and other similar devices whose primary functions are network communication and / or data processing are not considered household appliances as used herein.

[0030] As illustrated, each of refrigerator appliance 52, dishwashing appliance 54, remote user interface device 60, or any other devices or appliances in system of appliances 50 may include or be operably coupled to a controller, identified herein generally by reference numeral 70. As used herein, the terms “processing device,”“computing device,”“controller,” or the like may generally refer to any suitable processing device, such as a general or special purpose microprocessor, a microcontroller, an integrated circuit, an application specific integrated circuit (ASIC), a digital signal processor (DSP), a field-programmable gate array (FPGA), a logic device, one or more central processing units (CPUs), a graphics processing units (GPUs), processing units performing other specialized calculations, semiconductor devices, etc. In addition, these “controllers” are not necessarily restricted to a single element but may include any suitable number, type, and configuration of processing devices integrated in any suitable manner to facilitate appliance operation. Alternatively, controller 70 may be constructed without using a microprocessor, e.g., using a combination of discrete analog and / or digital logic circuitry (such as switches, amplifiers, integrators, comparators, flip-flops, AND / OR gates, and the like) to perform control functionality instead of relying upon software.

[0031] Controller 70 may include, or be associated with, one or more memory elements or non-transitory computer-readable storage mediums, such as RAM, ROM, EEPROM, EPROM, flash memory devices, magnetic disks, or other suitable memory devices (including combinations thereof). These memory devices may be a separate component from the processor or may be included onboard within the processor. In addition, these memory devices can store information and / or data accessible by the one or more processors, including instructions that can be executed by the one or more processors. It should be appreciated that the instructions can be software written in any suitable programming language or can be implemented in hardware. Additionally, or alternatively, the instructions can be executed logically and / or virtually using separate threads on one or more processors.

[0032] For example, controller 70 may be operable to execute programming instructions or micro-control code associated with an operating cycle of an appliance. In this regard, the instructions may be software or any set of instructions that when executed by the processing device, cause the processing device to perform operations, such as running one or more software applications, displaying a user interface, receiving user input, processing user input, etc. Moreover, it should be noted that controller 70 as disclosed herein is capable of and may be operable to perform any methods, method steps, or portions of methods as disclosed herein. For example, in some embodiments, methods disclosed herein may be embodied in programming instructions stored in the memory and executed by controller 70. The memory devices may also store data that can be retrieved, manipulated, created, or stored by the one or more processors or portions of controller 70. The data can include, for instance, data to facilitate performance of methods described herein. The data can be stored locally (e.g., on controller 70) in one or more databases and / or may be split up so that the data is stored in multiple locations. In addition, or alternatively, the one or more database(s) can be connected to controller 70 through any suitable communication module, communication lines, or network(s).

[0033] Referring still to FIG. 1, a schematic diagram of an external communication system 80 will be described according to an exemplary embodiment of the present subject matter. In general, external communication system 80 is configured for permitting interaction, data transfer, and other communications between and among refrigerator appliance 52, dishwashing appliance 54, remote user interface device 60, remote server 62, other appliances within system of appliances 50, and / or one or more external devices. For example, this communication may be used to provide and receive operating parameters, cycle settings, user instructions or notifications, performance characteristics, user preferences, or any other suitable information for improved performance of one or more appliances within system of appliances 50. In addition, it should be appreciated that external communication system 80 may be used to transfer data or other information to improve performance of one or more external devices or appliances and / or improve user interaction with such devices.

[0034] In addition, remote server 62 may be in communication with an appliance and / or remote user interface device 60 through a network 82. In this regard, for example, remote server 62 may be a cloud-based server 62, and is thus located at a distant location, such as in a separate state, country, etc. According to an exemplary embodiment, remote user interface device 60 may communicate with a remote server 62 over network 82, such as the Internet, to transmit / receive data or information, provide user inputs, receive user notifications or instructions, interact with or control the appliance, etc. In addition, remote user interface device 60 and remote server 62 may communicate with the appliance to communicate similar information.

[0035] In general, communication between an appliance, remote user interface device 60, remote server 62, and / or other user devices or appliances may be carried using any type of wired or wireless connection and using any suitable type of communication network, non-limiting examples of which are provided below. For example, remote user interface device 60 may be in direct or indirect communication with the appliance through any suitable wired or wireless communication connections or interfaces, such as network 82. For example, network 82 may include one or more of a local area network (LAN), a wide area network (WAN), a personal area network (PAN), the Internet, a cellular network, any other suitable short-or long-range wireless networks, etc. In addition, communications may be transmitted using any suitable communications devices or protocols, such as via Wi-Fi®, Bluetooth®, Zigbee®, wireless radio, laser, infrared, Ethernet type devices and interfaces, etc. In addition, such communication may use a variety of communication protocols (e.g., TCP / IP, HTTP, SMTP, FTP), encodings or formats (e.g., HTML, XML), and / or protection schemes (e.g., VPN, secure HTTP, SSL).

[0036] External communication system 80 is described herein according to an exemplary embodiment of the present subject matter. However, it should be appreciated that the exemplary functions and configurations of external communication system 80 provided herein are used only as examples to facilitate description of aspects of the present subject matter. System configurations may vary, other communication devices may be used to communicate directly or indirectly with one or more associated appliances, other communication protocols and steps may be implemented, etc. These variations and modifications are contemplated as within the scope of the present subject matter.

[0037] Referring now to FIGS. 1 and 2 depict an exemplary domestic dishwashing appliance or dishwasher 54 that may be configured in accordance with aspects of the present disclosure. For the particular embodiment of FIGS. 1 and 2, the dishwasher 54 includes a cabinet 102 having a tub 104 therein that defines a wash chamber 106. As shown, tub 104 extends between a top 107 and a bottom 108 along a vertical direction V, between a pair of side walls 110 along a lateral direction L, and between a front side 111 and a rear side 112 along a transverse direction T. Each of the vertical direction V, lateral direction L, and transverse direction T are mutually orthogonal to one another.

[0038] The tub 104 includes a front opening 114 and a door 116 hinged at its bottom for movement between a normally closed vertical position (shown in FIG. 2), wherein the wash chamber 106 is sealed shut for washing operation, and a horizontal open position for loading and unloading of articles from the dishwasher 54. According to exemplary embodiments, dishwasher 54 further includes a door closure mechanism or assembly 118 that is used to lock and unlock door 116 for accessing and sealing wash chamber 106.

[0039] As illustrated in FIG. 2, tub side walls 110 may accommodate a plurality of rack assemblies. More specifically, guide rails 120 may be mounted to side walls 110 for supporting a lower rack assembly 122, a middle rack assembly 124, and an upper rack assembly 126. As illustrated, upper rack assembly 126 is positioned at a top portion of wash chamber 106 above middle rack assembly 124, which is positioned above lower rack assembly 122 along the vertical direction V. Each rack assembly 122, 124, 126 is adapted for movement between an extended loading position (not shown) in which the rack is substantially positioned outside the wash chamber 106, and a retracted position (shown in FIGS. 1 and 2) in which the rack is located inside the wash chamber 106. This is facilitated, for example, by rollers 128 mounted onto rack assemblies 122, 124, 126, respectively. Although a guide rails 120 and rollers 128 are illustrated herein as facilitating movement of the respective rack assemblies 122, 124, 126, it should be appreciated that any suitable sliding mechanism or member may be used according to alternative embodiments.

[0040] Some or all of the rack assemblies 122, 124, 126 are fabricated into lattice structures including a plurality of wires or elongated members 130 (for clarity of illustration, not all elongated members making up rack assemblies 122, 124, 126 are shown in FIG. 2). In this regard, rack assemblies 122, 124, 126 are generally configured for supporting articles within wash chamber 106 while allowing a flow of wash fluid to reach and impinge on those articles (e.g., during a cleaning or rinsing cycle). According to another exemplary embodiment, a silverware basket (not shown) may be removably attached to a rack assembly (e.g., lower rack assembly 122) for placement of silverware, utensils, and the like, that are otherwise too small to be accommodated by rack 122.

[0041] Dishwasher 54 further includes a plurality of spray assemblies for urging a flow of water or wash fluid onto the articles placed within wash chamber 106. More specifically, as illustrated in FIG. 2, dishwasher 54 includes a lower spray arm assembly 134 disposed in a lower region 136 of wash chamber 106 and above a sump 138 so as to rotate in relatively close proximity to lower rack assembly 122. Similarly, a mid-level spray arm assembly 140 is located in an upper region of wash chamber 106 and may be located below and in close proximity to middle rack assembly 124. In this regard, mid-level spray arm assembly 140 may generally be configured for urging a flow of wash fluid up through middle rack assembly 124 and upper rack assembly 126. Additionally, an upper spray assembly 142 may be located above upper rack assembly 126 along the vertical direction V. In this manner, upper spray assembly 142 may be configured for urging or cascading a flow of wash fluid downward over rack assemblies 122, 124, and 126. As further illustrated in FIG. 2, upper rack assembly 126 may further define an integral spray manifold 144, which is generally configured for urging a flow of wash fluid substantially upward along the vertical direction V through upper rack assembly 126.

[0042] The various spray assemblies and manifolds described herein may be part of a fluid distribution system or fluid circulation assembly 150 for circulating water and wash fluid in the tub 104. More specifically, fluid circulation assembly 150 includes a pump assembly 152 for circulating water or wash fluid (e.g., detergent, water, or rinse aid) in the tub 104. For example, pump assembly 152 may include a pump motor 153 that drives pump assembly 152 to circulate or discharge wash fluid. Pump assembly 152 may be located within sump 138 or within a machinery compartment located below sump 138 of tub 104, as generally recognized in the art. Fluid circulation assembly 150 may include one or more fluid conduits or circulation piping for directing water or wash fluid from pump assembly 152 to the various spray assemblies and manifolds. For example, as illustrated in FIG. 2, a primary supply conduit 154 may extend from pump assembly 152, along rear 112 of tub 104 along the vertical direction V to supply wash fluid throughout wash chamber 106.

[0043] As illustrated, primary supply conduit 154 is used to supply wash fluid to one or more spray assemblies (e.g., to mid-level spray arm assembly 140 and upper spray assembly 142). However, it should be appreciated that according to alternative embodiments, any other suitable plumbing configuration may be used to supply wash fluid throughout the various spray manifolds and assemblies described herein. For example, according to another exemplary embodiment, primary supply conduit 154 could be used to provide wash fluid to mid-level spray arm assembly 140 and a dedicated secondary supply conduit (not shown) could be utilized to provide wash fluid to upper spray assembly 142. Other plumbing configurations may be used for providing wash fluid to the various spray devices and manifolds at any location within dishwashing appliance 54.

[0044] Each spray arm assembly 134, 140, 142, integral spray manifold 144, or other spray device may include an arrangement of discharge ports or orifices for directing wash fluid received from pump assembly 152 onto dishes or other articles located in wash chamber 106. The arrangement of the discharge ports, also referred to as jets, apertures, or orifices, may provide a rotational force by virtue of wash fluid flowing through the discharge ports. Alternatively, spray arm assemblies 134, 140, 142 may be motor-driven, or may operate using any other suitable drive mechanism. Spray manifolds and assemblies may also be stationary. The resultant movement of the spray arm assemblies 134, 140, 142 and the spray from fixed manifolds provides coverage of dishes and other dishwasher contents with a washing spray. Other configurations of spray assemblies may be used as well. For example, dishwasher 54 may have additional spray assemblies for cleaning silverware, for scouring casserole dishes, for spraying pots and pans, for cleaning bottles, etc. One skilled in the art will appreciate that the embodiments discussed herein are used for the purpose of explanation only and are not limitations of the present subject matter.

[0045] In operation, pump assembly 152 draws wash fluid in from sump 138 and pumps it to a diverter assembly 156 (e.g., which may be positioned within sump 138 of dishwashing appliance 54). Diverter assembly 156 may include a diverter disk (not shown) disposed within a diverter chamber 158 for selectively distributing the wash fluid to the spray arm assemblies 134, 140, 142 or other spray manifolds or devices. For example, the diverter disk may have a plurality of apertures that are configured to align with one or more outlet ports (not shown) at the top of diverter chamber 158. In this manner, the diverter disk may be selectively rotated to provide wash fluid to the desired spray device.

[0046] According to an exemplary embodiment, diverter assembly 156 is configured for selectively distributing the flow of wash fluid from pump assembly 152 to various fluid supply conduits, only some of which are illustrated in FIG. 2 for clarity. More specifically, diverter assembly 156 may include four outlet ports (not shown) for supplying wash fluid to a first conduit for rotating lower spray arm assembly 134 in the clockwise direction, a second conduit for rotating lower spray arm assembly 134 in the counter-clockwise direction, a third conduit for spraying an auxiliary rack such as the silverware rack, and a fourth conduit for supply mid-level or upper spray assemblies 140, 142 (e.g., such as primary supply conduit 154).

[0047] It should be appreciated that the invention is not limited to any particular style, model, or configuration of dishwasher 54. The exemplary embodiment depicted in FIGS. 1 and 2 is for illustrative purposes only. For example, different locations may be provided for user interface 164, different configurations may be provided for rack assemblies 122, 124, 126, different spray arm assemblies 134, 140, 142 and spray manifold configurations may be used, and other differences may be applied while remaining within the scope of the present subject matter. Moreover, aspects of the present subject matter may be applied to other appliances as well, such as refrigerators, ovens, microwaves, etc.

[0048] Referring now generally to FIGS. 1 and 2, door 116 will be described according to exemplary embodiments of the present subject matter. Although door 116 is described herein as being used with dishwasher 54, it should be appreciated that door 116 or variations thereof may be used on any other suitable residential or commercial appliance. As described herein, door 116 may share a coordinate system with dishwasher 54, e.g., when door 116 is in the closed position (e.g., as shown in FIG. 2). Specifically, door 116 may define a vertical direction V, a lateral direction L, and a transverse direction T. Therefore, these directions may be used herein to refer to features of door 116 and its various components and sub-assemblies.

[0049] As shown, in the normally closed position, door 116 extends from a top end or top edge 180 to a bottom end or bottom edge 182 along the vertical direction V; from a front end 184 to a rear end 186 along the transverse direction T; and between two lateral ends 188 along the lateral direction L. According to exemplary embodiments, door 116 may be formed from one or more exterior panels that define an interior chamber of door 116. According to exemplary embodiments, the exterior panels of door 116 may be panels that are stamped from stainless steel or may be formed from any other suitably rigid material, such as thermoformed plastic, other metals, etc. In general, the exterior panels of door 116 may be assembled in any suitable manner, e.g., may be secured together using any suitable mechanical fastener, welding, snap-fit mechanisms, etc. In addition, it should be appreciated that an insulating material (not shown), such as fiberglass or foam insulation, may be positioned within door 116 to provide thermal and / or sound insulation to dishwasher 54.

[0050] Referring still to FIGS. 1 and 2, user interface panel 164 is positioned proximate top edge 180 of door 116 along the vertical direction V. In this manner, user interface panel 164 may be partially hidden below a countertop when dishwashing appliance 54 is installed below the countertop and door 116 is closed. Accordingly, dishwashing appliance 54 may be referred to as a “top control dishwasher appliance.” However, it should be appreciated that aspects of the present subject matter may be used with dishwasher appliances having other configurations or any other suitable appliance. For example, user interface panel 164 may be alternately positioned on front face or front end 184 of door 116.

[0051] User interface panel 164 is positioned on door 116 such that a user can engage or interact with user interface panel 164, e.g., to select operating cycles and parameters, activate / deactivate operating cycles, or adjust other operating parameters of dishwashing appliance 54. User interface panel 164 may include a printed circuit board (not shown) that is positioned within door 116. According to exemplary embodiments, printed circuit board may include or be operatively coupled to controller 70 and / or user interface panel 164. In addition, user interface panel 164 may include or be operably coupled to one or more user inputs or touch buttons (e.g., identified generally herein as user inputs 166) for receiving user input, providing user notifications, or illuminating to indicate cycle or operating status.

[0052] Specifically, according to the illustrated embodiment, user inputs 166 include a plurality of capacitive sensors that are mounted to user interface panel 164 and are operable to detect user inputs. For example, these capacitive sensors may be configured for triggering when a user touches a top edge 180 of user interface panel 164 in a region associated with a particular user input 166. In particular, these capacitive sensors can detect when a finger or another conductive material with a dielectric different than air contacts or approaches user interface panel 164, along with the precise location, pressure, etc. of the finger interaction.

[0053] When a user touches top edge 180 of user interface panel 164 adjacent one of user inputs 166, the associated capacitive sensors may be triggered and may communicate a corresponding signal to controller 70. In such a manner, operations of dishwashing appliance 54 can be initiated and controlled. According to exemplary embodiments, the capacitive sensors may be distributed laterally on user interface panel 164. It will be understood that other any suitable number, type, and position of capacitive sensors may be used while remaining within the scope of the present subject matter. Indeed, any suitable number, type, and configuration of user inputs 166 may be used while remaining within the scope of the present subject matter.

[0054] User interface panel 164 may define a plurality of surfaces that are intended to be illuminated for various purposes. For example, user inputs 166 may be illuminated by light sources to inform the user of the location of the button or to provide some other status indication. Notably, this illumination is typically achieved by directing a light beam along the vertical direction V onto top edge 180 of user interface panel 164. Door 116 may further include a plurality of light sources or lighting devices that are configured for illuminating one or more surfaces of user interface panel 164. It should be appreciated that these light sources may include any suitable number, type, configuration, and orientation of light sources mounted at any suitable location to illuminate status indicators or buttons in any suitable colors, sizes, patterns, etc. In other words, the light sources may be provided as any suitable number, type, position, and configuration of electrical light source(s), using any suitable light technology and illuminating in any suitable color. For example, the light sources may include one or more light emitting diodes (LEDs), which may each illuminate in a single color (e.g., white LEDs), or which may each illuminate in multiple colors (e.g., multi-color or RGB LEDs) depending on the control signal from controller 70.

[0055] However, it should be appreciated that according to alternative embodiments, the light sources may include any other suitable traditional light bulbs or sources, such as halogen bulbs, fluorescent bulbs, incandescent bulbs, glow bars, a fiber light source, etc. Moreover, the light sources may be operably coupled (e.g., electrically coupled) to controller 70 or another suitable control board to facilitate activation or illumination of the light sources (e.g., to indicate a user input, state of the dishwasher appliance, state of the wash cycle, or any other relevant information to a user).

[0056] According to exemplary embodiments, user interface panel 164 may be any suitable transparent or semitransparent feature for diffusing, directing, or otherwise transmitting light from a light source. For example, user interface panel 164 may be formed from a suitable transparent or translucent material configured to direct light energy, such as a dielectric material, such as glass or plastic, polycarbonate, polypropylene, polyacrylic, or any other suitable material.

[0057] In addition, user interface panel 164 may be a dead fronted panel. As used herein, the term “dead front” and the like is generally intended to refer to portions of a control panel which may be used as indicators, buttons, interactive control surfaces, or other user-interaction features without exposing the user to the operating side of the equipment or live parts and connections, i.e., lights, electrical connections, etc. For example, user interface panel 164 may include a transparent or translucent body and an opaque masking material that is selectively printed on top edge 180 of the translucent body to define capacitive touch buttons or user inputs 166.

[0058] The opaque material may be deposited on the translucent body to define any suitable number, size, and configuration of illuminated features. These illuminated features may be shapes or include other forms such as symbols, words, etc. that are visible on user interface panel 164. More specifically, when light sources are energized, capacitive touch buttons or user inputs 166 on top edge 180 may be illuminated. Thus, the dead fronted top edge 180 may be the surface that is contacted for controlling dishwashing appliance 54 or which may be illuminated for purposes of indicating operating status or other conditions to the user of the dishwashing appliance 54.

[0059] As noted briefly above, one or more spray arm assemblies (e.g., lower spray arm assembly 134, mid-level spray arm assembly 140, or upper spray arm assembly 142) may periodically become stuck or lock up, e.g., due to articles placed in the dishwasher that block or prevent their rotation. Notably, if spray arms are not properly rotating during a wash cycle, cleaning performance may be negatively impacted. Accordingly, aspects of the present subject matter are generally directed to methods for detecting stuck spray arms. For example, one manner of detecting a stuck spray arm may be monitoring sound generated during operation of spray arm assemblies.

[0060] Accordingly, system of appliances 50 may include a microphone 190 that is positioned at any suitable location within the vicinity of dishwashing appliance 54 for monitoring sound generated by dishwashing appliance 54. For example, according to the illustrated embodiment, microphone 190 may be mounted on refrigerator appliance 52. In this regard, conventional refrigerator appliances commonly include built-in microphones for purposes of user interaction. However, conventional dishwashers do not include microphones because they typically do not provide enough value in a dishwasher to justify the costs. Accordingly, microphone 190 of refrigerator appliance 52 (which is positioned in the vicinity of dishwasher 54) may facilitate performance improvements to dishwasher 54 without additional costs.

[0061] According to still other embodiments, microphone 190 may be mounted to another appliance within system of appliances 50 or could be a standalone microphone mounted within the kitchen. In general, microphone 190 may be used for monitoring the sound waves, noises, or other vibrations generated during the operation of dishwashing appliance 54. For example, microphone 190 may be one or more microphones, acoustic detection devices, vibration sensors, or any other suitable acoustic transducers that are positioned at one or more locations in or around dishwashing appliance 54.

[0062] Now that the construction of dishwashing appliance 54 according to exemplary embodiments have been presented, an exemplary method 200 of operating a dishwasher appliance will be described. Although the discussion below refers to the exemplary method 200 of operating dishwashing appliance 54, one skilled in the art will appreciate that the exemplary method 200 is applicable to the operation of a variety of other dishwasher appliances and spray arms on any other suitable appliance.

[0063] In exemplary embodiments, the various method steps as disclosed herein may be performed by controller 70 or a separate, dedicated controller. In this regard, as described herein, controller 70 of dishwashing appliance 54 may implement all steps of method 200. However, it should be appreciated that according to alternative embodiments, controller 70 may offload the analysis described herein, e.g., by sending sound signals to remote server 62 for analysis. Other distributed analysis arrangements are possible and within the scope of the present subject matter.

[0064] As explained above, a system of appliances may include two or more appliances that are in operative communication through a remote network. According to the illustrated example embodiment, the first smart kitchen appliance is a refrigerator appliance including a microphone and a communication module, and the second smart kitchen appliance is a dishwasher that includes a communication module but no microphone. As explained above, the communication modules of the refrigerator appliance and the dishwasher may be in operative communication with each other. For example, the communication modules may communicate using local Wi-Fi or Bluetooth Low Energy (BLE).

[0065] Referring now to FIG. 3, method 200 includes, at step 210, determining that a remote appliance is performing a procedure. For example, continuing the example from above, the refrigerator appliance may utilize its internal microphone to monitor the remote appliance, such as a dishwasher. For example, the dishwasher may be located in the vicinity of the refrigerator, such as in the same kitchen. The refrigerator appliance may perform one or more initialization or appliance detection methods to determine that the dishwasher is nearby and is intended to be monitored. For example, the controller of the refrigerator appliance may obtain a signal strength of the communication between the refrigerator and the dishwasher and may use the signal strength to determine the proximity of the two appliances. Specifically, for example, the controller may obtain a Bluetooth signal strength between the communication module and the remote appliance, determine that the remote appliance is within a predetermined proximity based on the Bluetooth signal strength, and monitor sound signals from the remote appliance in response to determining that the remote appliance is within the predetermined proximity.

[0066] Other means for linking or pairing the two appliances may be used while remaining within the scope of the present subject matter. For example, a user may use a user interface panel of one or both appliances to discover the other appliance and manually request that the appliances communicate with each other. According to still other embodiments, dishwasher may be programmed to generate a specific pairing sound or request upon initial installation, and the refrigerator appliance may use the microphone to hear the request and begin pairing the two appliances.

[0067] After the two devices are paired and the refrigerator appliance is listening to the operation of the dishwasher using the microphone, the refrigerator appliance may go through a training procedure where it uses the microphone to monitor sounds coming from the dishwasher. These sounds may be stored in memory as proper operating sounds. In addition, or alternatively, dishwasher appliance may intentionally make sounds associated with common failures or adverse operating conditions, and the refrigerator appliance may store these sound signatures for later comparison. Other initialization procedures may be used while remaining within the scope of the present subject matter.

[0068] Step 220 may include obtaining a sound signal using the microphone. In this regard, refrigerator appliance may continuously or periodically monitor sounds generated by the dishwasher during operation. For example, at the beginning of a cleaning cycle, the dishwasher may make a predetermined sound to signal the start of the cycle, after which refrigerator may use the microphone to listen for the duration of the operating cycle.

[0069] Step 230 may include identifying an adverse operating condition of the remote appliance by determining that the sound signal corresponds to a predetermined sound signature. In this regard, the refrigerator appliance may compare recorded sound signals to a database of sound signatures associated with operation of the dishwasher. The refrigerator may identify an adverse operating condition when the recorded sound signal matches or corresponds to the predetermined sound signature associated with such an operating condition.

[0070] According to an example embodiment, the adverse operating condition is a stuck spray arm. In this regard, normal operation of a spray arm may generate a sound signal that include periodic noises when the spray of wash fluid strikes a particular portion of the wash tub, contacts a particular dish or article within the dishwasher, etc. If the splashing sound becomes erratic, stops altogether, or becomes consistent, this may indicate that the spray arm has stopped rotating, e.g., due to contact with a dish or other mechanical failure. Upon such an occurrence, the refrigerator may identify the presence of an adverse operating condition.

[0071] Although the example above describes the controller of the refrigerator appliance as storing sound signatures and analyzing sounds recorded by the microphone, it should be appreciated that according to alternative embodiments, another suitable controller or processor may perform such analysis. For example, the refrigerator may transmit the sound signal to a remote server for analysis. The remote server may communicate with the refrigerator and / or the dishwasher when the adverse operating condition is identified. For example, the remote server may contain sound signatures from a plurality of different types and models of remote appliances. In addition, the remote server may associate such sound signatures with proper operating sounds or adverse operating conditions.

[0072] Specifically, step 240 may include implementing a responsive action in response to identifying the adverse operating condition. For example, implementing the responsive action may include notifying the remote appliance of the adverse operating condition. The dishwasher appliance may then perform various actions to check or confirm the existence of the identified operating condition and / or rectify the adverse condition. For example, the dishwasher may operate the pump assembly to pulse the flow of wash fluid through the spray arm or perform additional fill processes. In addition, or alternatively, the dishwasher may perform a test sequence to identify the adverse operating condition, may reverse the rotational direction of the spray arm, etc.

[0073] According to another example embodiment, the dishwasher or the refrigerator may communicate with the user regarding the existence of an adverse operating condition and may recommend corrective action. For example, the controller of the refrigerator, the dishwasher, or the remote server may provide a user notification regarding the adverse operating condition, e.g., via one or more appliance user interfaces or through a remote device. For example, the user notification may state that the spray arm is stuck and recommend that the user adjust one or more articles within the dishwasher, call a service technician, or perform other steps to mitigate the effects of the adverse operating condition.

[0074] FIG. 3 depicts steps performed in a particular order for purposes of illustration and discussion. Those of ordinary skill in the art, using the disclosures provided herein, will understand that the steps of any of the methods discussed herein can be adapted, rearranged, expanded, omitted, or modified in various ways without deviating from the scope of the present disclosure. Moreover, although aspects of method 200 are explained using refrigerator appliance 52 and dishwashing appliance 54 as an example, it should be appreciated that this method may be applied to the operation of any suitable system of appliances including a dishwasher.

[0075] This written description uses examples to disclose the invention, including the best mode, and also to enable any person skilled in the art to practice the invention, including making and using any devices or systems and performing any incorporated methods. The patentable scope of the invention is defined by the claims, and may include other examples that occur to those skilled in the art. Such other examples are intended to be within the scope of the claims if they include structural elements that do not differ from the literal language of the claims, or if they include equivalent structural elements with insubstantial differences from the literal languages of the claims.

Examples

Embodiment Construction

[0014]Reference now will be made in detail to embodiments of the invention, one or more examples of which are illustrated in the drawings. Each example is provided by way of explanation of the invention, not limitation of the invention. In fact, it will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the scope or spirit of the invention. For instance, features illustrated or described as part of one embodiment can be used with another embodiment to yield a still further embodiment. Thus, it is intended that the present invention covers such modifications and variations as come within the scope of the appended claims and their equivalents.

[0015]As used herein, the terms “first,”“second,” and “third” may be used interchangeably to distinguish one component from another and are not intended to signify location or importance of the individual components. The terms “includes” and “including” are...

Claims

1. A smart kitchen appliance, comprising:a microphone for monitoring sounds generated around the smart kitchen appliance;a communication module in operative communication with a remote appliance; anda controller configured to:determine that the remote appliance is performing a procedure;obtain a sound signal using the microphone;identify an adverse operating condition of the remote appliance by determining that the sound signal corresponds to a predetermined sound signature; andimplement a responsive action in response to identifying the adverse operating condition.

2. The smart kitchen appliance of claim 1, wherein the remote appliance is a dishwasher, the procedure is a cleaning cycle, and the adverse operating condition is a stuck spray arm.

3. The smart kitchen appliance of claim 1, wherein the communication module communicates with the remote appliance using local Wi-Fi or Bluetooth Low Energy (BLE).

4. The smart kitchen appliance of claim 3, wherein the controller is further configured to:obtain a Bluetooth signal strength between the communication module and the remote appliance;determine that the remote appliance is within a predetermined proximity based on the Bluetooth signal strength; andmonitor sound signals from the remote appliance in response to determining that the remote appliance is within the predetermined proximity.

5. The smart kitchen appliance of claim 1, wherein the controller is further configured to:transmit the sound signal to a remote server for analysis.

6. The smart kitchen appliance of claim 5, wherein the remote server contains sound signatures from a plurality of different types and models of remote appliances.

7. The smart kitchen appliance of claim 1, wherein implementing the responsive action comprises:notifying the remote appliance of the adverse operating condition.

8. The smart kitchen appliance of claim 1, wherein implementing the responsive action comprises:providing a user notification regarding the adverse operating condition.

9. The smart kitchen appliance of claim 8, wherein the user notification is provided through a user interface panel of the remote appliance.

10. The smart kitchen appliance of claim 8, wherein the user notification is provided to a remote device using an external network.

11. The smart kitchen appliance of claim 1, wherein the smart kitchen appliance is a refrigerator appliance.

12. A dishwasher appliance, comprising:a wash tub defining a wash chamber;a spray arm rotatably mounted within the wash tub for selectively rotating and spraying a flow of wash fluid within the wash chamber;a pump assembly for selectively urging a flow of wash fluid;a communication module in operative communication with a remote kitchen appliance, the remote kitchen appliance comprising a microphone for monitoring sounds generated around the remote kitchen appliance; anda controller in operative communication with the communication module, the controller being configured to:operate the pump assembly to provide the flow of wash fluid to the spray arm and rotate the spray arm;obtain a notification of an adverse operating condition from the remote kitchen appliance, the adverse operating condition being identified when a sound signal obtained by the microphone of the remote kitchen appliance corresponds to a predetermined sound signature; andimplement a responsive action in response to obtaining the notification of the adverse operating condition.

13. The dishwasher appliance of claim 12, wherein implementing the responsive action comprises:performing a test sequence to identify the adverse operating condition.

14. The dishwasher appliance of claim 12, wherein implementing the responsive action comprises:reversing a rotational direction of the spray arm.

15. The dishwasher appliance of claim 12, wherein implementing the responsive action comprises:pulsing the flow of wash fluid through the spray arm or performing additional fill processes.

16. The dishwasher appliance of claim 12, wherein the remote kitchen appliance is a refrigerator appliance.

17. A method of operating a smart kitchen appliance, the smart kitchen appliance comprising a microphone for monitoring sounds generated around the smart kitchen appliance and a communication module in operative communication with a remote appliance, the method comprising:determining that the remote appliance is performing a procedure;obtaining a sound signal using the microphone;identifying an adverse operating condition of the remote appliance by determining that the sound signal corresponds to a predetermined sound signature; andimplementing a responsive action in response to identifying the adverse operating condition.

18. The method of claim 17, wherein the remote appliance is a dishwasher, the procedure is a cleaning cycle, and the adverse operating condition is a stuck spray arm.

19. The method of claim 17, wherein the communication module communicates with the remote appliance using local Wi-Fi or Bluetooth Low Energy (BLE), further comprising:obtaining a Bluetooth signal strength between the communication module and the remote appliance;determining that the remote appliance is within a predetermined proximity based on the Bluetooth signal strength; andmonitoring sound signals from the remote appliance in response to determining that the remote appliance is within the predetermined proximity.

20. The method of claim 17, further comprising:transmitting the sound signal to a remote server for analysis.

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