Acoustic base tray for a dishwashing appliance, and associated method

• US 8,020,662 B1
• Filed: 07/22/2010
• Issued: 09/20/2011
• Est. Priority Date: 07/22/2010
• Status: Expired due to Fees

• Current Assignee: Electrolux Home Products Incorporated (AB Electrolux)
• Original Assignee: Electrolux Home Products Incorporated (AB Electrolux)
• Inventors: Colon, Mario Ascander, Van Vooren, Gregory, Duckworth, Jason
• Primary Examiner(s): Enad; Elvin G
• Assistant Examiner(s): SCHREIBER, CHRISTINA MARIE
• Application Number:
  US12/841,883
• Time in Patent Office: 425 Days
• Field of Search: 181/205, 181/290, 181/293, 181/286, 134/18, 134/57.D, 134/58.D, 134/115.R
• US Class Current: 181/205
• CPC Class Codes: A47L 15/4209 Insulation arrangements, e.g. for sound damping or heat insulation

Abstract

An apparatus and associated method for attenuating noise generated by a dishwashing appliance in operation is provided herein. During operation a dishwasher and its components generate thermo-acoustic waves associated with noise. A base tray comprising a major surface and an array of thermo-acoustic nodes are used to manage and control the thermo-acoustic waves. The array of thermo-acoustic nodes can be configured in a plurality of rows and columns with at least two thermo-acoustic nodes being interconnected. The array of thermo-acoustic nodes can be configured to channel the thermo-acoustic waves therebetween so as to control and manage the thermo-acoustic waves, thereby attenuating the noise associated with the thermo-acoustic waves. The base tray can be customizable with various arrangements of different thermo-acoustic nodes, clusters, stabilizers and/or channels.

Claims

1. A base tray operably engaged with a dishwashing appliance and configured to manage and control vibrations and/or sound waves in order to attenuate noise generated by the dishwashing appliance in an operational state, said base tray comprising:

a major surface; and

an array of nodes disposed on the major surface and defined by a plurality of rows and a plurality of columns, at least two of the nodes configured to channel the vibrations and/or sound waves therebetween so as to control and manage the vibrations and/or sound waves, thereby attenuating the noise associated with the vibrations and/or sound waves,

wherein each of the nodes comprises an outer wall member protruding outwardly from the major surface and a node member positioned within the outer wall member and protruding outwardly from the major surface, and

wherein at least two of the nodes are interconnected by the outer wall members.

2. A base tray according to claim 1, wherein at least two of the nodes are interconnected between adjacent rows of the array.

3. A base tray according to claim 1, wherein at least two of the nodes are interconnected between adjacent columns of the array.

4. A base tray according to claim 1, further comprising distribution channels defined between the outer wall members of adjacent nodes.

5. A base tray according to claim 1, wherein a height of the outer wall member is greater than a height of the node member positioned therein.

6. A base tray according to claim 1, wherein the node member comprises a convex surface.

7. A base tray according to claim 1, wherein a plurality of the nodes comprise a hexagonal or a diamond shape.

8. A base tray according to claim 7, wherein adjacent nodes are interconnected by sharing a common side.

9. A base tray according to claim 7, wherein a plurality of the nodes comprise a hexagonal shape and a plurality of the nodes comprise a diamond shape.

10. A base tray according to claim 1, wherein a plurality of the nodes are different sizes than one another.

11. A base tray according to claim 1, wherein the base tray and each of the nodes are integrally formed from a single piece of material.

12. A base tray according to claim 1, wherein the array of nodes is configured to attenuate noise having a frequency of between about 50 Hz and about 10 kHz.

13. A base tray according to claim 12, wherein the array of nodes comprises a plurality of low-frequency nodes configured to attenuate noise having a frequency between about 50 Hz and about 300 Hz.

14. A base tray according to claim 13, wherein the array of nodes comprises a cluster of interconnected low-frequency nodes.

15. A base tray according to claim 12, wherein the array of nodes comprises a plurality of mid-frequency nodes configured to attenuate noise having a frequency between about 300 Hz and about 7 kHz.

16. A base tray according to claim 15, wherein the array of nodes comprises a cluster of interconnected mid-frequency nodes.

17. A base tray according to claim 12, wherein the array of nodes comprises a plurality of high-frequency nodes configured to attenuate noise having a frequency between about 7 kHz and about 10 kHz.

18. A base tray according to claim 17, wherein the array of nodes comprises a cluster of interconnected high-frequency nodes.

19. The base tray according to claim 1, wherein the outer wall members define a planar surface that interconnects a plurality of the nodes.

20. The base tray according to claim 1, wherein the node members are independent of and spaced from the outer wall members.

21. The base tray according to claim 1, wherein at least one of the outer wall members defines a shape that is the same as the shape of the one of the node members positioned therein.

22. A method for managing and controlling vibrations and/or sound waves in order to attenuate noise generated by a dishwashing appliance in an operational state, said method comprising:

providing a base tray comprising;

a major surface; and

an array of nodes disposed on the major surface and defined by a plurality of rows and a plurality of columns,

wherein each of the nodes comprises an outer wall member protruding outwardly from the major surface and a node member positioned within the outer wall member and protruding outwardly from the major surface, and

wherein at least two of the nodes are interconnected by the outer wall member; and

channeling the vibrations and/or sound waves between the nodes so as to control and manage the vibrations and/or sound waves and to thereby attenuate the noise associated with the vibrations and/or sound waves.

23. A method of manufacturing a base tray operably engaged with a dishwashing appliance and configured to manage and control vibrations and/or sound waves in order to attenuate noise generated by the dishwashing appliance in an operational state, the method comprising:

forming a base tray comprising a major surface and an array of nodes disposed on the major surface and defined by a plurality of rows and a plurality of columns,

wherein each of the nodes comprises an outer wall member protruding outwardly from the major surface and a node member positioned within the outer wall member and protruding outwardly from the major surface, and

wherein at least two of the nodes are interconnected by the outer wall member,

at least two of the nodes configured to channel the vibrations and/or sound waves therebetween so as to control and manage the vibrations and/or sound waves, thereby attenuating the noise associated with the vibrations and/or sound waves.