Patents by Inventor David Scott Dunn

David Scott Dunn has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20240068151
    Abstract: A laundry appliance includes a cabinet with a drum rotatably mounted within the cabinet. The drum includes a chamber for receipt of articles for drying. The laundry appliance also includes a sealed system configured to heat and remove moisture from process air flowing therethrough. The sealed system includes a multi-pass heat exchanger and a refrigerant splitter upstream of the multi-pass heat exchanger. The refrigerant splitter is configured to direct a flow of refrigerant generally along a vertical direction and/or against the force of gravity.
    Type: Application
    Filed: August 26, 2022
    Publication date: February 29, 2024
    Inventors: Jivko Ognianov Djerekarov, David Scott Dunn, David G. Beers
  • Patent number: 11851799
    Abstract: A washing machine appliance includes a wash basket that is rotatably mounted within a wash tub and that defines a wash chamber for receiving a load of clothes. A motor assembly selectively rotates the wash basket, a drain pump assembly selectively drains wash fluid from the wash tub, and a camera assembly is used to monitor an out-of-balance value to minimize out-of-balance issues. Specifically, a controller of the washing machine appliance uses the camera assembly to obtain one or more images of the wash chamber, analyze the one or more images using a machine learning image recognition process to determine the out-of-balance value of the load of clothes in the wash basket, and perform a cloth redistribution process based at least in part on determining that the out-of-balance value is greater than a predetermined out-of-balance threshold.
    Type: Grant
    Filed: March 25, 2021
    Date of Patent: December 26, 2023
    Assignee: Haier US Appliance Solutions, Inc.
    Inventors: Khalid Jamal Mashal, David Scott Dunn
  • Patent number: 11851802
    Abstract: A laundry treatment appliance includes a cabinet forming a receiving space therein, a tub provided within the receiving space, and a dispenser assembly provided within the receiving space, the dispenser assembly being in fluid communication with the tub. The dispenser assembly includes a dispenser body coupled to the cabinet and provided adjacent to the tub, a first drawer slidably inserted into the dispenser body along the transverse direction, and a second drawer slidably inserted into the dispenser body along the transverse direction, the second drawer being provided beneath the first drawer along the vertical direction.
    Type: Grant
    Filed: September 14, 2021
    Date of Patent: December 26, 2023
    Assignee: Haier US Appliance Solutions, Inc.
    Inventors: David Scott Dunn, Alexander Daniel James, Kenneth G. Rudolph, Rainer Schuster
  • Patent number: 11846064
    Abstract: A laundry appliance uses a determination of a frequency of compressor temperature response, refrigerant mass flow rate, or both to determine accumulation of lint in a filter. Based on the determination, various corrective actions can be taken including notifying the user, shutting off the appliance, initiating an automatic cleaning sequence for one or more lint filters, and combinations thereof.
    Type: Grant
    Filed: January 21, 2021
    Date of Patent: December 19, 2023
    Assignee: Haier US Appliance Solutions, Inc.
    Inventors: Sarah Heiniger, David Scott Dunn, Jivko Ognianov Djerekarov, Ionelia Silvia Prajescu
  • Publication number: 20230220607
    Abstract: A dryer appliance, a controller, and a method for operation are provided. The controller is configured to execute steps of a method including receiving an input indicative of a drying cycle end time; determining a moisture extraction rate based at least in part on the received input indicative of drying cycle end time, the moisture extraction rate indicative of a rate at which moisture is removed from articles within a chamber of the dryer appliance; determining a rate of change of moisture extraction rate corresponding to the drying cycle end time; and adjusting a condensation rate based at least on the rate of change of moisture extraction rate and the received input indicative of the drying cycle end time.
    Type: Application
    Filed: January 10, 2022
    Publication date: July 13, 2023
    Inventors: David Scott Dunn, Jivko Ognianov Djerekarov, Daniele Martinello
  • Publication number: 20230084319
    Abstract: A laundry treatment appliance includes a cabinet forming a receiving space therein, a tub provided within the receiving space, and a dispenser assembly provided within the receiving space, the dispenser assembly being in fluid communication with the tub. The dispenser assembly includes a dispenser body coupled to the cabinet and provided adjacent to the tub, a first drawer slidably inserted into the dispenser body along the transverse direction, and a second drawer slidably inserted into the dispenser body along the transverse direction, the second drawer being provided beneath the first drawer along the vertical direction.
    Type: Application
    Filed: September 14, 2021
    Publication date: March 16, 2023
    Inventors: David Scott Dunn, Alexander Daniel James, Kenneth G. Rudolph, Rainer Schuster
  • Patent number: 11603624
    Abstract: A laundry appliance uses a determination of volumetric airflow rate after a steady state condition is reached to determine the accumulation of lint in filter. Based on the determination, various actions can be taken including notifying the user, shutting off the appliance, initiating an automatic cleaning sequence for one or more lint filters, and combinations thereof. One or more temperature sensors, relative humidity sensors, and weight sensors are used to provide measurements for determining the volumetric airflow rate.
    Type: Grant
    Filed: December 10, 2020
    Date of Patent: March 14, 2023
    Assignee: Haier US Appliance Solutions, Inc.
    Inventors: Sarah Heiniger, David Scott Dunn, Jivko Ognianov Djerekarov, Ionelia Silvia Prajescu
  • Publication number: 20230064924
    Abstract: A laundry appliance is configured for and/or methods of operating a laundry appliance include determining a load size of articles to be dried in the laundry appliance and determining a load type of the articles to be dried in the laundry appliance. A termination criterion for a dry operation of the laundry appliance is determined based on the load size and the load type. The laundry appliance is further configured for and/or the method further includes performing the dry operation in the laundry appliance. The dry operation is terminated when the termination criterion is reached.
    Type: Application
    Filed: August 26, 2021
    Publication date: March 2, 2023
    Inventors: David Scott Dunn, Joshua Reeves, Dimitar Tcholakov, Ionelia Silvia Prajescu, Jivko Ognianov Djerekarov, Daniele Martinello, Gregory Allen Dedow
  • Publication number: 20220349105
    Abstract: A combination washer/dryer appliance may include a cabinet, a tub, a laundry basket, a heater, and a controller. The laundry basket may be rotatably mounted within the tub and define a chamber for receipt of articles for washing or drying. The controller may be operably coupled to the heater and configured to initiate a wash/dry operation. The wash/dry operation may include initiating a wash/dry operation for articles within the laundry basket. The wash/dry operation may include a wash cycle and a dry cycle. The wash/dry operation may further include determining completion of the wash cycle and directing a tumble cycle of the laundry basket in response to determining completion of the wash cycle. The wash/dry operation may still further include determining a user drying preference during the tumble cycle of the laundry basket and adjusting the wash/dry operation based on the determined user drying preference.
    Type: Application
    Filed: April 30, 2021
    Publication date: November 3, 2022
    Inventors: Jeffrey Kellow, David Scott Dunn
  • Publication number: 20220307186
    Abstract: A washing machine appliance includes a wash basket that is rotatably mounted within a wash tub and that defines a wash chamber for receiving a load of clothes. A motor assembly selectively rotates the wash basket, a drain pump assembly selectively drains wash fluid from the wash tub, and a camera assembly is used to monitor an out-of-balance value to minimize out-of-balance issues. Specifically, a controller of the washing machine appliance uses the camera assembly to obtain one or more images of the wash chamber, analyze the one or more images using a machine learning image recognition process to determine the out-of-balance value of the load of clothes in the wash basket, and perform a cloth redistribution process based at least in part on determining that the out-of-balance value is greater than a predetermined out-of-balance threshold.
    Type: Application
    Filed: March 25, 2021
    Publication date: September 29, 2022
    Inventors: Khalid Jamal Mashal, David Scott Dunn
  • Publication number: 20220307185
    Abstract: A laundry appliance includes a cabinet and a tub mounted within an interior volume of the cabinet. A laundry basket is rotatably mounted within the tub. The laundry basket defines a chamber for the receipt of articles for treatment. The laundry appliance also includes a heating system coupled to the tub. The heating system is in thermal communication with the chamber such that heated air flows from the heating system to the chamber. The laundry appliance further includes a controller. The controller may be configured for, and methods of operating the appliance may include, providing a flow of a liquid into a tub of the laundry appliance, rotating a laundry basket within the tub after providing the flow of the liquid into the tub, and activating the heating system of the laundry appliance during at least a portion of the step of rotating the laundry basket.
    Type: Application
    Filed: March 29, 2021
    Publication date: September 29, 2022
    Inventors: Jivko Ognianov Djerekarov, David Scott Dunn, Brian Michael Schork
  • Patent number: 11421375
    Abstract: A method of operating a laundry appliance in a drying cycle includes motivating a flow of process air from a drum of the laundry appliance across an evaporator of a sealed system. Refrigerant in the evaporator of the sealed system absorbs heat from the flow of process air and the refrigerant circulates through the sealed system. The method also includes receiving, by a controller of the laundry appliance, an input indicative of a characteristic of the sealed system. The method further includes determining, by the controller, a dryness level of articles in the drum of the laundry appliance based on the received input indicative of the characteristic of the sealed system.
    Type: Grant
    Filed: February 24, 2020
    Date of Patent: August 23, 2022
    Assignee: Haier US Appliance Solutions, Inc.
    Inventors: Jivko Ognianov Djerekarov, David Scott Dunn
  • Patent number: 11408116
    Abstract: A method of operating a dryer appliance includes directing a flow of hot dry air into a chamber defined within a drum of the dryer appliance. The method also includes receiving a signal indicative of an atmospheric condition external to the dryer appliance and determining whether the indicated atmospheric condition is less than a threshold. The method may further include directing a flow of air from the chamber to an interior space when the indicated atmospheric condition external to the dryer is less than the threshold, and activating a component of an environmental control system in communication with the interior space when the indicated atmospheric condition of the ambient environment external to the dryer is less than the threshold.
    Type: Grant
    Filed: September 19, 2018
    Date of Patent: August 9, 2022
    Assignee: Haier US Appliance Solutions, Inc.
    Inventors: David Scott Dunn, James Quentin Pollett
  • Publication number: 20220228312
    Abstract: A laundry appliance uses a determination of a frequency of compressor temperature response, refrigerant mass flow rate, or both to determine accumulation of lint in a filter. Based on the determination, various corrective actions can be taken including notifying the user, shutting off the appliance, initiating an automatic cleaning sequence for one or more lint filters, and combinations thereof.
    Type: Application
    Filed: January 21, 2021
    Publication date: July 21, 2022
    Inventors: Sarah Heiniger, David Scott Dunn, Jivko Ognianov Djerekarov, Ionelia Silvia Prajescu
  • Publication number: 20220186424
    Abstract: A laundry appliance uses a determination of volumetric airflow rate after a steady state condition is reached to determine the accumulation of lint in filter. Based on the determination, various actions can be taken including notifying the user, shutting off the appliance, initiating an automatic cleaning sequence for one or more lint filters, and combinations thereof. One or more temperature sensors, relative humidity sensors, and weight sensors are used to provide measurements for determining the volumetric airflow rate.
    Type: Application
    Filed: December 10, 2020
    Publication date: June 16, 2022
    Inventors: Sarah Heiniger, David Scott Dunn, Jivko Ognianov Djerekarov, Ionelia Silvia Prajescu
  • Patent number: 11174586
    Abstract: A dryer appliance includes a cabinet. A drum is disposed within the cabinet. The drum is mounted such that the drum is fixed relative to the cabinet. The drum defines a length between a first end portion of the drum and a second end portion of the drum. The dryer appliance also includes an air duct and a fan. The air duct is coupled to the fan. The air duct has an outlet positioned at a bottom portion of the drum. The fan is operable to urge a flow of air through the air duct and into the drum at the outlet of the air duct.
    Type: Grant
    Filed: September 10, 2019
    Date of Patent: November 16, 2021
    Assignee: Haier US Appliance Solutions, Inc.
    Inventors: Gabriel Neculai Prajescu, David Scott Dunn, Jivko Ognianov Djerekarov, Brian Michael Schork, Ionelia Silvia Prajescu, James Quentin Pollett
  • Patent number: 11142863
    Abstract: A dryer appliance and a method of operating the same are provided. In one aspect, the dryer appliance includes a drum rotatably mounted within a cabinet. The drum defines a chamber that is in fluid communication with a conditioning system of the dryer appliance. The conditioning system heats air circulating therethrough and removes water from the process air. A collection tank collects the water and a drain pump removes water from the collection tank intermittently when the water reaches a predetermined level. The frequency at which the drain pump removes water from the collection tank is utilized to determine the moisture extraction rate indicative of the rate at which moisture is removed from the clothes. The moisture extraction rate is utilized to control the mass flow rate of refrigerant in a heat pump sealed system or the process air flow rate through the closed loop air circuit.
    Type: Grant
    Filed: October 22, 2019
    Date of Patent: October 12, 2021
    Assignee: Haier US Appliance Solutions, Inc.
    Inventors: David Scott Dunn, Jivko Ognianov Djerekarov, Brian Michael Schork
  • Publication number: 20210277564
    Abstract: A washing machine appliance includes a microphone for monitoring sound generated during operation of the washing machine appliance and a controller is operably coupled to the microphone. The controller is configured for obtaining a sound signal generated during operation of the washing machine appliance and converting the sound signal into a spectrogram that represents a sound frequency and a sound amplitude over time. An artificial intelligence image recognition process is used to analyze the spectrogram to identify one or more sound signatures that are associated with particular operating conditions, and operation of the washing machine appliance is adjusted based at least in part on the identification of the sound signature.
    Type: Application
    Filed: March 3, 2020
    Publication date: September 9, 2021
    Inventors: Khalid Jamal Mashal, David Scott Dunn, Juan Manuel Huerta
  • Publication number: 20210262153
    Abstract: A method of operating a laundry appliance in a drying cycle includes motivating a flow of process air from a drum of the laundry appliance across an evaporator of a sealed system. Refrigerant in the evaporator of the sealed system absorbs heat from the flow of process air and the refrigerant circulates through the sealed system. The method also includes receiving, by a controller of the laundry appliance, an input indicative of a characteristic of the sealed system. The method further includes determining, by the controller, a dryness level of articles in the drum of the laundry appliance based on the received input indicative of the characteristic of the sealed system.
    Type: Application
    Filed: February 24, 2020
    Publication date: August 26, 2021
    Inventors: Jivko Ognianov Djerekarov, David Scott Dunn
  • Patent number: 11060236
    Abstract: A dryer appliance and a method of operating the same are provided. In one aspect, the dryer appliance includes a drum rotatably mounted within a cabinet. The drum defines a chamber that is in fluid communication with a conditioning system of the dryer appliance. The conditioning system heats air circulating therethrough. A variable speed blower fan is provided to circulate air between the conditioning system and the chamber. A sensor is positioned at or proximate a drum exit of the drum. A controller of the dryer appliance receives an input indicative of the relative humidity of the air at the drum exit. Based on the received input, the controller determines a control command. The control command can be routed to a blower fan motor operable to drive the blower fan. The blower fan motor receives the control command and adjusts a flow rate of the air exiting the drum exit.
    Type: Grant
    Filed: October 3, 2019
    Date of Patent: July 13, 2021
    Assignee: Haier US Appliance Solutions, Inc.
    Inventors: Jivko Ognianov Djerekarov, David Scott Dunn, Brian Michael Schork, Katherine Ashley De Arazoza