Patent Publication Number: US-2023148828-A1

Title: Laundry treating apparatus and method of indicating operational information for a bulk dispensing system

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     The present application is a continuation of U.S. patent application Ser. No. 17/141,731, filed Jan. 5, 2021, now allowed, which application is a continuation of U.S. patent application Ser. No. 16/135,658, filed Sep. 19, 2018, now U.S. Pat. No. 10,907,294, issued Feb. 2, 2021, which application is a continuation of U.S. patent application Ser. No. 15/247,486, filed Aug. 25, 2016, now U.S. Pat. No. 10,100,455, issued Oct. 16, 2018, which application is a continuation of U.S. patent application Ser. No. 14/104,058, filed Dec. 12, 2013, now U.S. Pat. No. 9,445,704, issued Sep. 20, 2016, which application is a divisional application of U.S. patent application Ser. No. 13/608,162, filed Sep. 10, 2012, now U.S. Pat. No. 8,615,834, issued Dec. 31, 2013, which application is a divisional of U.S. patent application Ser. No. 12/165,873, filed Jul. 1, 2008, now U.S. Pat. No. 8,286,288, issued Oct. 16, 2012, all of which are incorporated herein by reference in their entirety. 
    
    
     BACKGROUND 
     Cleaning appliances, such as dishwashers or clothes washers, are often provided with a dispensing system for automatically dispensing one or more treating chemistries during a cleaning cycle. One common type of dispenser is the manual or single use dispenser, which may be filled with a dose of treating chemistry sufficient for a single cleaning cycle. Another type of dispenser is a bulk dispenser, which contains an amount of treating chemistry sufficient for multiple cleaning cycles. The bulk dispensing systems, while known, are not very common in household appliances. Some systems are capable of controlling and varying the amount of treating chemistry. These systems are more convenient to the user in the sense that the user only has to remember to fill them once every few cycles of operation. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       In the drawings: 
         FIG.  1    is a schematic view of an automatic clothes washing machine having a dispensing system and user interface according to an aspect of the present disclosure. 
         FIG.  2    is a detail view of the user interface of the cleaning appliance of  FIG.  1    according to one aspect of the present disclosure. 
         FIG.  2 A  is a detail view of the user interface illustrated in  FIG.  2    according to one aspect of the present disclosure. 
     
    
    
     DETAILED DESCRIPTION 
       FIG.  1    illustrates a household cleaning appliance in which one method embodying the present disclosure may be implemented. The cleaning appliance is shown in the environment of a horizontal axis automatic clothes washing machine  10 . Although much of the remainder of this application will focus on the example of an automatic clothes washing machine, the present disclosure may have utility in other environments, including other cleaning appliances, such as dryers, combination washer-dryers, fabric fresheners, and dishwashers, or other non-cleaning appliances such as refrigerators. The automatic clothes washing machine  10  shares many features of a conventional automated clothes washer, which will not be described in detail herein except as necessary for a complete understanding of the present disclosure. 
     Further, washing machines are typically categorized as either a vertical axis washing machine or a horizontal axis washing machine. As used herein, the “vertical axis” washing machine refers to a washing machine having a rotatable drum that rotates about a generally vertical axis relative to a surface that supports the washing machine. However, the rotational axis need not be vertical. The drum may rotate about an axis inclined relative to the vertical axis. As used herein, the “horizontal axis” washing machine refers to a washing machine having a rotatable drum that rotates about a generally horizontal axis relative to a surface that supports the washing machine. In some horizontal axis washing machines, the drum rotates about a horizontal axis generally parallel to a surface that supports the washing machine. However, the rotational axis need not be horizontal. The drum may rotate about an axis inclined relative to the horizontal axis, with fifteen degrees of inclination being one example of inclination. 
     Vertical axis and horizontal axis machines are best differentiated by the manner in which they impart mechanical energy to the fabric articles. In vertical axis machines, typically a fabric moving element moves within a drum to impart mechanical energy directly to the clothes or indirectly through wash liquid in the drum. In horizontal axis machines mechanical energy is typically imparted to the clothes by the tumbling action formed by the repeated lifting and dropping of the clothes, which is typically implemented by the rotating drum, although horizontal axis machines could also include fabric moving elements. 
     While technology and methods are not always interchangeable between vertical and horizontal axis machines, the present disclosure disclosed herein may be suitable for use in both horizontal axis and vertical axis automatic clothes washing machines. The present disclosure will be illustrated and described, however, in the context of a horizontal axis washing machine. 
     The automatic clothes washing machine  10  may include a cabinet  12  enclosing components typically found in a conventional washing machine, such as motors, pumps, fluid lines, controls, sensors, transducers, and the like. A door  15  may be mounted to the cabinet to selectively close an access opening to the interior of a tub  14  that defines a wash chamber  22  in which fabric articles, collectively forming a load of laundry, are treated. Both the tub  14  and a drum  16  are suspended in the interior of the cabinet  12 . The tub  14  may be associated with a sump  18  for temporarily holding a liquid used during a cleaning cycle. The liquid may be only water or may be a mixture of water and a treating chemistry, such as a detergent. Other treating chemistries, such as bleach or softener, may also be in the mixture. 
     The cabinet  12  may include a user interface  20  that has operational controls such as dials, lights, switches, and displays enabling a user to input commands to a controller  24  and receive information about a specific cleaning cycle. The user interface  20  may be electrically coupled with the controller  24  through user interface leads  76 . When the controller  24  is a microprocessor controller, the various cleaning cycles capable of being implemented by the controller  24  may be stored in internal memory of the controller  24  or memory associated with the controller  24 . These cycles may be any desired cycle, including all currently known cycles. 
     With respect to a washing machine, the term cleaning cycle may be used to mean one operational cycle of the automatic clothes washing machine  10  that cleans a laundry load having one or more articles. The term cleaning cycle is not limited to a wash cycle in the traditional sense where laundry is washed in a water and detergent solution. The term cleaning cycle may include applying a treating chemistry to the laundry, or to a treating cycle in combination with or part of a traditional cleaning cycle. 
     A multi-use or bulk dispensing system  60  may also be located in the cabinet  12  and may dispense treating chemistry during a cleaning cycle. The treating chemistry may be any type of aid for treating fabric, and examples may include, but are not limited to washing aids, such as detergents and oxidizers, including bleaches, and additives, such as fabric softeners, sanitizers, de-wrinklers, and chemicals for imparting desired properties to the fabric, including stain resistance, fragrance (e.g., perfumes), insect repellency, and UV protection. 
     As used herein, the term multiple doses of treating chemistry, and variations thereof, refers to an amount of treating chemistry sufficient for multiple cleaning cycles of the automatic clothes washing machine. 
     Looking at the components of the washing machine in greater detail, the controller  24  may be operably coupled to the bulk dispensing system  60 . In this way, the controller  24  may control the selective dispensing of treating chemistry to the wash chamber  22  during the cleaning cycle from the bulk dispensing system  60 . 
     The water control system may also include a conduit  29  fluidly coupling a control valve  26  to a household water supply  28 . The valve  26  is fluidly coupled to the tub  14  and bulk dispensing system  60  by dispensing lines  27  and  64 , respectively. In this way, the valve  26  may be used to control the selective distribution of the household water supply to the water-using components of the washing machine  10 . 
     A dispensing line  66  may fluidly couple the bulk dispensing system  60  with the tub  14 . Thus, fresh water may be delivered from the water supply  28  through the conduit  29 , valve  26  and to dispensing line  64  into the bulk dispensing system  60  for flushing treating chemistry there from and to the tub through the dispensing line  66 . The valve  26  may be electrically coupled with the controller  24  through a valve control lead  56 . The controller  24  may control the operation of the valve  26  in response to instructions received from the user interface  20  as a result of selections made by the user, such as cleaning cycle, water temperature, spin speed, extra rinse, and the like. 
     The bulk dispensing system  60  may include at least one bulk dispensing chamber  62  that is sized to store multiple doses of treating chemistry that may be selectively dispensed into the tub  14  or the wash chamber  22  as part of the execution of the cleaning cycle. The bulk dispensing chamber  62  may further be provided with one or more sensors  68  that may be used to provide information about the status of the bulk dispensing system, such as: type of treating chemistry, amount of treating chemistry, and amount dosed, for example. The sensor  68  may be in communication with the controller  24  via a lead  86 . The controller  24  may use the information to control a wash cycle or to display the information on the user interface  20 . For example, if the sensor  68  is a fill indicator used to determine the amount of treating chemistry in the chamber  62 , the controller may display this information on the user interface  20  for viewing by the consumer. 
     The fill indicator  68  may be any suitable type of sensor. It may be a direct sensor or an indirect sensor. A direct sensor will provide an output, such as a signal, that is indicative of the desired sensed condition. An indirect sensor will provide an output, such as a signal that is further processed, such as by the controller  24 , to make a final determination for the desired sensed condition. In the case of a fill indicator  68 , it may be an indirect sensor that provides a signal indicative of a volume level that the controller  24  uses to determine how full is the treating chemistry chamber. The sensor may also be a float-type indicator, a light-type indicator, or an alarm-type indicator. The fill indicator  68  may be any combination of visible or audible indication. The manner in which the sensing is accomplished is not germane to the present disclosure and may include such methods as resistive, inductance or capacitance sensing. 
     The bulk dispensing chamber  62  may also include a sensor  74  indicating the presence of treating chemistry in the bulk dispensing chamber  62 . The sensor  74  may be used to determine whether treating chemistry is or is not present in the bulk dispensing chamber  62 , while the fill indicator  68  may be used to determine the amount of treating chemistry in the chamber  62 . Multiple sensors  74  may indicate the presence of treating chemistry in multiple chambers within the dispensing chamber  62 . The sensor  74  may be any suitable type of sensor, such as a pressure sensor, level sensor, or proximity sensor, for sensing the presence of treating chemistry in the dispensing chamber  62 . Regardless of the type, the sensor  74  may send a signal to the controller  24 , via the user interface  20 , through lead  84  to indicate the presence of the treating chemistry in the dispensing chamber  62 . The foregoing description may be of an exemplary sensor location; other locations may be utilized for the sensor  74 . 
     The bulk dispensing system  60  may further include a treating chemistry meter  54  to dispense a predetermined amount of treating chemistry each cleaning cycle. The predetermined amount may vary from cycle-to-cycle, even for the same cycle, and will typically be set by the controller  24 . The treating chemistry meter  54  may be a mechanical flow meter, a magnetic flow meter, or any other meter suitable for measuring liquid flow, all well known in the cleaning appliance art. The treating chemistry meter  54  may send a signal to the user interface  20  through lead  88  that is indicative of or used to determine the amount of treating chemistry that has been dispensed to the wash chamber  22 . 
     While not illustrated, the bulk dispensing system  60  is capable of receiving and containing multiple types of treating chemistry in multiple chambers within the dispensing chamber  62 . Each chamber may hold the chemistry or a removable container, such as a cartridge, containing the treating chemistry. Although the bulk dispenser cartridge has been illustrated or described as a rectangular box-like container, the bulk dispensing cartridge may be any type of removable container configured to store multiple doses of a treating chemistry. The container may have any shape and size that is receivable within the dispenser. The removable container may be flexible, rigid, expandable, or collapsible. The container may be made of any type of material. Some examples of suitable cartridges are, without limitation, a plastic container, a cardboard container, a coated cardboard container, and a bladder, all of which are capable of being received within the dispenser. 
     Regardless of whether one or more treating chemistries are stored in the bulk dispensing system  60 , the controller  24  may recognize the type of treating chemistry present in the dispensing chamber  62  through several methods. Examples of these recognition methods include, but are not limited to, user input, utilizing a keyed treating chemistry cartridge or cartridge with a RFID (radio-frequency identification) tag or chip, or sensors  74 , such as refractive incidence sensors, to sense the type of chemistry. These methods may communicate to the controller  24  which of the various treating chemistries have been inserted into the dispensing chamber  62 . The determined types of treating chemistry may be communicated to the controller  24  via lead  84 , for display on the user interface  20 . 
     Referring to  FIG.  2   , a detail view of the user interface  20  according to one implementation of the present disclosure is shown. The user interface  20  may have a combination of operational controls such as dials, lights, switches, buttons, and displays enabling a user to input commands to a controller  24  and to receive information about a specific cleaning cycle. The user interface, as described here, is not limited to a visual display, but also includes communication to and from the user such as an audible indicator, a microphone, or a camera for example. Also, the term display should not be limited to a visual indicator, but should be defined to also include an audible indicator. 
     The user interface  20  may include the user inputted selection of fabric type, water temperature, spin speed, and wash delay, soil level, and cycle signal. The user interface  20 , according to one implementation of the present disclosure, further includes an indication of the determination of the number of doses of treating chemistry available in the bulk dispensing system  60  for supplying the operation of the cleaning cycle. Given this determination, an indication is provided on the user interface  20 . This indication may be displayed as a visual indicator, an audible indicator, or both. 
     In an exemplary implementation, a remaining number of doses of treating chemistry in the bulk dispenser  60  may be determined by the controller  24  based on a reference dose size and a determined amount of treating chemistry present in the dispensing chamber  62 . The reference dose size may be a standard dose size as determined by the manufacturer and inputted into the controller  24 , or may be based on historical usage data for the washing machine  10 . As described above, the historical usage data may be provided to the controller  24  by the treating chemistry meter  54 , which may determine the amount of treating chemistry that has been dispensed to the wash chamber  22 . This historical usage data may be stored in internal memory of the controller  24  or memory associated with the controller  24 . For example, the meter  54  may be a mechanical type flow meter that has a component that rotates within a chamber of known volume. For each rotation, an amount of water passes through the chamber. A gear or magnetic drive counts the number of turns and sends a signal to the controller  24 , which keeps a running total of the volume that has been recorded to have passed through the meter  54 . This volume relates to a dose size, which may be compared to the set dose size, and then stored in the controller&#39;s  24  memory as the historical usage data. 
     The historical usage data may be any usage data that is indicative of dose size, examples of which include executed cycles and/or actual dose size. For example, different cycles may have different dose sizes. That is, a cycle for a large load may have a different dose requirement than a dose for a cycle for a small load. The historical cycle data may be analyzed to track the most commonly executed cycle and use the corresponding dose size as the reference dose. Alternatively, the reference dose size may be a weighted average of the dose size for the executed cycles. Yet another alternative is to use the dose size for the last executed cycle as the reference dose size or to use the dose size for the currently selected cycle as the reference dose size. 
     In a similar way, the actual dose size may be analyzed over time to set the reference dose size. For example, the actual dose data may be analyzed for the most common dose size and select that as a reference dose size. An average dose size may be determined and used as the reference dose size. The dose size of the last cycle or the current cycle may also be used as the reference dose size. 
     When an average dose size is used, it may be determined in a number of different ways. For example, it may be determined as a running average over the entire length of the washing machine&#39;s  10  life cycle, or may be based on a predetermined number of recent cycles, for example a calculated average dosage size over the last ten cycles. 
     Regardless of how the reference dose size is determined, the number of doses remaining may be determined by dividing the remaining treating chemistry by the reference dose size. The amount of treating chemistry sensed to be present in the dispensing chamber  62  may be directly determined by the sensor  68 , which may be a fill indicator. With the above information, the sensed amount of treating chemistry may be compared to the reference dose size to determine a remaining number of doses present in the dispensing chamber  62 . 
     Other alternatives for determining the remaining doses are possible and the present disclosure is not limited to the particular method in which the reference dose size is determined. For example, it is not necessary to use a reference dose size. One such method would include determining or assuming that a set number of doses for the bulk dispensing system and then decrementing the set number of doses for each executed cycle until the bulk dispensing system is refilled. The amount decremented may be assumed to be one per cycle or it may be determined in one of the ways previously described. Again, the manner in which the remaining doses are determined is not limiting to the present disclosure. 
     As shown in  FIG.  2 A , the determination of the remaining number of doses may be displayed on the user interface  20  by means of a series of icons  42 ; an alpha-numeric  72  reading on an LCD screen  36 , or similar; a bar  70  reading to be proportionally illuminated; or a stack of lights  40  to be proportionally illuminated. This information is provided to the user interface  20  for display via the lead  76 , as determined by the controller  24 . 
     Further, the determination of the remaining number of doses may be displayed on the user interface  20  when the appliance is powered on. The particular method, as described above, for determining the reference dose size will have been established within the controller  24  and the user interface  20  may display the according number of doses remaining at the time the appliance is powered on. If the chosen method for determining the reference dose size is based on the dose size of the current cycle, the determination of the remaining number of doses may be displayed on the user interface  20  at the time the user selects the dose size for the current cycle. 
     In addition to displaying the remaining doses, the types of treating chemistries may also be displayed. For example, an alpha-numeric  72  character of each wash type to be displayed on the LCD screen  36 , or similar. Alternatively, an iconic representation  44 ,  46 ,  48  of each of the types of treating chemistry may be displayed. Exemplary icons are shown in  FIG.  2 A . 
     Further, the user interface  20  may also display the status of the dosing operation of the bulk dispensing system  60  by providing an indication if the treating chemistry was determined not to have dispensed. During operation, it may be that the treating chemistry may not be dispensed for several reasons; for example, an absence of treating chemistry in the dispensing chamber  62 , or a determined insufficient amount of treating chemistry present in the dispensing chamber  62  for the selected cycle. The absence of treating chemistry, or the determination that there is an insufficient amount present in the dispensing chamber may by made by the sensor  68 , as described above. In the case that an insufficient amount of a particular treating chemistry is determined to be present, the controller  24  will effect the dispensing of the entire content of that particular chemistry. The determination that the treating chemistry was not dispensed is provided to the user interface  20  for display via the lead  88 , as monitored throughout the cycle of operation by the sensor  68  and the treating chemistry meter  54 . 
     An indication that the treating chemistry was not dispensed may be displayed on the user interface  20  by means such as an alpha-numeric  72  character to be displayed on the LCD screen  36 , or similar. An exemplary alpha-numeric  72  character is the phrase “dosing error”, which may be displayed in the dosing information area on the user interface  20 . Alternatively, an iconic representation  44 ,  46 ,  48  of each of the types of treating chemistry may be displayed, and may flash or blink to indicate an error status, for example. 
     Dependent on the particular cycle that the user selects prior to operation of the washing machine  10 , one or more treating chemistries or combinations thereof may be required. The bulk dispensing system  60  is capable of dispensing the type or types of treating chemistry required for the different cycles of operation as selected by the user. The user interface  20  may display the determination of which of the types of treating chemistry are required for the selected cycle of operation. This determination is provided by the controller  24  to the user interface  20  for display via the lead  76 . The required treating chemistries may be displayed by means of an alpha-numeric  72  reading on an LCD screen  36 , or similar; or a representative icon  44 ,  46 , or  48 . For example, an alpha-numeric  72  indication, such as the word “detergent”, “bleach” or “fabric softener” may be displayed in the dosage information area on the user interface  20 . Alternatively, each treating chemistry icon  44 ,  46 ,  48  may be displayed in the dosage information area on the user interface  20 . Further, the appropriate alpha-numeric  72  character or icon  44 ,  46 ,  48  may be displayed at the time in the cycle of operation at which that particular chemistry is being dosed. The dosing information may be monitored by the sensor  68  or the treating chemistry meter  54 . Optionally, the alpha-numeric  72  character or icon  44 ,  46 ,  48  may remain illuminated throughout the entire dispensing operation for that particular treating chemistry. 
     The method of the present disclosure offers many benefits to consumers, including feedback regarding the operation of the unit. The bulk dispensing system  60  eliminates the need for the user to remove a supply of treating chemistry from a storage space, fill a dispenser, and replace the supply of treating chemistry each time the washing machine  10  is operated. However, there may be some ambiguity inherent to a dispensing system providing for multiple cycles of operation and multiple treating chemistries. The described method and user interface  20  may eliminate that ambiguity by providing clear communication to the user regarding aspects of operation, such as the number of doses of treating chemistry remaining in the bulk dispenser and information regarding the type of treating chemistry being dosed. 
     The method of the present disclosure has been described thus far as relating primarily to a dose size and a reference dose size. However, another contemplated methodology of the present disclosure may be related instead to volume. Like the method of determining and displaying the remaining number of doses, the remaining volume may be determined and displayed. This may be accomplished in several different ways. 
     One way in which the method of the present disclosure may relate to a volume instead of a dose size is by utilizing the above described level sensor. Given a known volume of the dispensing chamber  62 , the level sensor may sense the level at which the treating chemistry fills the dispensing chamber  62  and provide that information to the controller  24 . The provided information from the level sensor may be an absolute value, a percentage of the total volume of the dispensing chamber  62 , or any other representative value. This provided information may be used by the controller  24  to determine the remaining volume of treating chemistry present in the bulk dispensing system  60 . 
     Given this determination, an indication may be provided on the user interface  20 . As described above with regard to doses remaining, this indication may be displayed as a visual indicator, an audible indicator, or both. The indication may be displayed as a volumetric value, such as cups, ounces, milliliters, or equivalent. Further, the determination of the remaining volume may be displayed on the user interface  20  by means of a series of icons  42 ; an alpha-numeric  72  reading on an LCD screen  36 , or similar; a bar  70  reading to be proportionally illuminated; or a stack of lights  40  to be proportionally illuminated. 
     While the present disclosure has been specifically described in connection with certain specific embodiments thereof, it is to be understood that this is by way of illustration and not of limitation. Reasonable variation and modification are possible within the scope of the forgoing disclosure and drawings without departing from the spirit of the invention which is defined in the appended claims.