Refrigerator with automatic liquid dispenser

• US 9,557,097 B2
• Filed: 06/16/2015
• Issued: 01/31/2017
• Est. Priority Date: 12/09/2011
• Status: Active Grant

• Current Assignee: Electrolux Consumer Products Incorporated
• Original Assignee: Electrolux Home Products Incorporated (AB Electrolux)
• Inventors: McMahan, Travis, Bertolini, Nilton, Thompson, Thomas R., Sanchez, Jorge Carlos Montalvo, Comsa, Cornel
• Primary Examiner(s): Maust, Timothy L
• Assistant Examiner(s): Kelly, Timothy P
• Application Number:
  US14/740,657
• Publication Number:
  US 20150284237A1
• Time in Patent Office: 595 Days
• Field of Search: 141/2, 141 94- 95, 141/198, 623/89, 222/638, 222/644
• US Class Current: 1/1
• CPC Class Codes: B67D 1/1238 comprising means for detecting the liquid level in vessels to be filled, e.g. using ultrasonic waves, optical reflexion, probes
• CPC Class Codes: B67D 1/124 the flow being started or stopped by means actuated by the vessel to be filled, e.g. by switches, weighing
• CPC Class Codes: B67D 2001/1268 Capacitors
• CPC Class Codes: B67D 7/221 using electrical or electro-mechanical means B67D7/224 takes precedence
• CPC Class Codes: F25D 23/126 Water cooler
• CPC Class Codes: F25D 2323/122 the refrigerator is characterised by a water tank for the water/ice dispenser
• CPC Class Codes: F25D 2331/81 Pitchers
• CPC Class Codes: F25D 2600/02 Timing

Abstract

A refrigerator includes a cabinet defining a fresh food compartment and a door pivotally mounted to the cabinet and including an interior surface in communication with the fresh food compartment when the door is closed. A liquid dispenser is arranged on the interior surface of the door, and a container is supported on the door and configured to receive liquid from the liquid dispenser. A sensor is configured to sense a property of the container, and a control is in communication with the sensor. The control is configured to regulate dispensing of liquid into the container based upon the sensed property of the container. In one example, the sensor is resiliently biased into contact with the container to sense a property of the container. In another example, the control indicates a stale liquid condition if a timer expires before the container has been removed from the door.

Claims

1. A method of dispensing a liquid from a refrigerator, comprising the steps of:

sensing a presence of a container on an interior surface of a door in communication with a fresh food compartment of the refrigerator;

sensing a presence of liquid within the container;

initiating a timer that tracks time;

indicating a stale liquid condition if a predetermined amount of time, tracked by the timer, has elapsed before the container has been removed from the door; and

adjusting the predetermined amount of time via a user interface of said refrigerator.

2. The method of claim 1, further comprising the steps of:

sensing an absence of the container on the interior surface of the door; and

resetting the timer after the presence of the container is subsequently sensed on the interior surface of the door.

3. The method of claim 1, further comprising the steps of:

dispensing the liquid into the container; and

resetting the timer after the liquid dispensing is complete.

4. The method of claim 1, further comprising the steps of:

dispensing the liquid into the container;

sensing an amount of liquid within the container; and

stopping the dispensing of liquid when the sensed amount of liquid is equal to a predetermined amount of liquid within the container.

5. The method of claim 1, wherein the timer counts down from the predetermined amount of time until the timer expires.

6. The method of claim 1, wherein the predetermined amount of time is preset.

7. The method of claim 1, wherein the step of indicating a stale liquid further comprises the step of:

illuminating at least one visual indicator.

8. The method of claim 7, further comprising the steps of:

illuminating the at least one visual indicator to indicate the stale liquid condition; and

illuminating at least another visual indicator to indicate an acceptable liquid condition.

9. The method of claim 1, wherein the step of indicating a stale liquid further comprises the step of:

operating at least one of a sound feedback device or tactile feedback device.

10. The method of claim 1, wherein the step of indicating the stale liquid is provided by an indication on a user interface of said refrigerator.

11. The method of claim 1, further comprising the steps of:

dispensing the liquid into the container; and

resetting the timer immediately upon dispensing the liquid.

12. The method of claim 1, wherein the steps of sensing the presence of the container and sensing the presence of liquid within the container are performed by a capacitive sensor.

13. The method of claim 12, wherein the capacitive sensor is coupled to a dielectric plate located adjacent to the container and is resiliently biased into engagement with the container.

14. The method of claim 1, wherein the step of sensing the presence of the container performed by a first capacitive sensor, and the step of sensing the presence of liquid within the container is performed by a second capacitive sensor.