Sink with backflow prevention vortex blockers

Abstract

A drain system directly injects fluid into a drain or drain adapter. The drain or drain adapter includes at least one vortex blocking flow disrupter disposed on an internal surface of the drain or drain adapter. The flow disrupter comprises at least one surface discontinuity configured to lessen the strength of a vortex from the injected fluid to prevent the fluid from rising into the sink basin.

What is claimed is: 
     
         1 . A vortex blocking drain adapter comprising:
 a sidewall extending from a first end to a second end, wherein an interior of the sidewall comprises structure defining a plurality of protrusions extending radially inwardly, and wherein the first end of the sidewall is configured to be coupled to a drain of a sink basin, and a second end is configured to be coupled to a drainpipe or garbage disposal.   
     
     
         2 . The vortex blocking drain adapter of  claim 1 , wherein the plurality of protrusions comprises a plurality of vertical ribs. 
     
     
         3 . The vortex blocking drain adapter of  claim 1 , wherein the first end of the sidewall has a diameter greater than a diameter of the second end of the sidewall. 
     
     
         4 . The vortex blocking drain adapter of  claim 3 , wherein a first portion of the sidewall extends from the first end to a shoulder, and a second portion of the sidewall extends from the shoulder to the second end. 
     
     
         5 . The vortex blocking drain adapter of  claim 4 , wherein an external surface of the second portion proximate the second end includes structure defining threading configured to engage with corresponding threading on an internal surface of the drainpipe or a garbage disposal. 
     
     
         6 . The vortex blocking drain adapter of  claim 1 , wherein the first end of the sidewall is configured to couple to an attachment bayonet of the drain. 
     
     
         7 . The vortex blocking drain adapter of  claim 1 , wherein the plurality of protrusions comprises ribs, bumps, dimples, cavities, or combinations thereof. 
     
     
         8 . A drain system comprising:
 a drain assembly extending from a bottom wall of a sink basin; and   a drain adapter operably coupled to the drain, the drain adapter having a sidewall including an interior surface comprising structure defining a plurality of protrusions extending radially inwardly, the drain adapter being configured to reduce or prevent formation of a vortex in the drain assembly.   
     
     
         9 . The drain system of  claim 8 , therein the drain adapter comprises a first end coupleable to the drain assembly. 
     
     
         10 . The drain system of  claim 9 , wherein the drain assembly comprises a direct inject drain assembly comprising a drain sidewall having a fluid inlet stem extending from an exterior surface of the drain sidewall, and plurality of nozzles in fluid communication with the fluid inlet stem, wherein the plurality of nozzles are configured to introduce streams of fluid directly into the drain assembly. 
     
     
         11 . The drain system of  claim 10 , wherein the drain assembly further comprises a garbage disposal coupled to the drain adapter at a second end of the drain adapter opposite the first end. 
     
     
         12 . The drain system of  claim 9 , wherein the drain adapter comprises a second end coupleable to a drainpipe or a garbage disposal. 
     
     
         13 . The drain system of  claim 12 , wherein an exterior surface of the second portion proximate the second end includes structure defining threading configured to engage with corresponding threading on an internal surface of the drainpipe or a garbage disposal. 
     
     
         14 . The drain system of  claim 8 , wherein the first end of the sidewall has a diameter greater than a diameter of a second end of the sidewall. 
     
     
         15 . The drain system of  claim 14 , wherein a first portion of the sidewall extends from the first end to a shoulder, and a second portion of the sidewall extends from the shoulder to the second end. 
     
     
         16 . The drain system of  claim 8 , wherein the plurality of protrusions comprises ribs, bumps, dimples, cavities, or combinations thereof. 
     
     
         17 . A drain adapter comprising:
 a sidewall removably coupleable to a drain assembly of a sink basin at a first end of the sidewall, and removably couplable to a drainpipe or a garbage disposal at a second end of the sidewall, wherein the drain adapter is configured to block formation of a vortex in the drain assembly to prevent fluid backflow into the sink basin.   
     
     
         18 . The drain adapter of  claim 17 , wherein an interior of the sidewall includes structure defining one or more protrusions. 
     
     
         19 . The drain adapter of  claim 18 , wherein the one or more protrusions comprise a plurality of vertically extending ribs. 
     
     
         20 . The drain adapter of  claim 18 , wherein the one or more protrusions comprise a plurality of ribs, bumps, dimples, cavities, or combinations thereof.