Flush toilet bowl

Abstract

The flush toilet bowl includes: a toilet bowl portion; a toilet drainage channel; a toilet bowl main body that includes: a first water discharge port that discharges a first cleaning water that forms a swirling flow; and a second water discharge port that discharges a second cleaning water that is joined, on the downstream side of the first cleaning water flowing on the surface of the toilet bowl portion, by the first cleaning water and forms a downward flow toward the toilet drainage channel; and a toilet bowl cleaning device that supplies the first and second cleaning water, wherein by the time the first cleaning water reaches a merging point where the first cleaning water joins the second cleaning water that forms the downward flow, the second cleaning water has been increased to a set flow rate.

1 . A flush toilet bowl comprising:
 a toilet bowl portion;   a toilet drainage channel that communicates with the downstream side of the toilet bowl portion;   a toilet bowl main body that includes: a first water discharge port that is open on the upper periphery of the toilet bowl portion and that discharges cleaning water that forms a swirling flow swirling inside the toilet bowl portion in the planar view; and a second water discharge port that is open on the upper periphery of the toilet bowl portion and discharges cleaning water that is joined, on the downstream side of the cleaning water discharged from the first water discharge port and flowing on the surface of the toilet bowl portion, by the cleaning water discharged from the first water discharge port and forms a downward flow toward the toilet drainage channel; and   a toilet bowl cleaning device that supplies cleaning water to the first water discharge port and the second water discharge port,   wherein, after the toilet bowl cleaning device starts supplying the cleaning water to the first water discharge port and the second water discharge port, and, by the time the cleaning water discharged from the first water discharge port flows on the surface of the toilet bowl portion and reaches a merging point where the cleaning water discharged from the first water discharge port joins the cleaning water discharged from the second water discharge port that forms the downward flow, the cleaning water discharged from the second water discharge port has been increased to a set flow rate.   
     
     
         2 . The flush toilet bowl according to  claim 1 ,
 wherein the flow of the cleaning water discharged from the first water discharge port is changed to a downward flow when joining the cleaning water discharged from the second water discharge port, forming a mainstream that flows into the toilet drainage channel.   
     
     
         3 . The flush toilet bowl according to  claim 1 ,
 wherein the toilet bowl main body has a water supply chamber with the second water discharge port open toward the inside of the toilet bowl portion, and   wherein the toilet bowl cleaning device has a water supply pipe through which cleaning water flows out that is placed inside the water supply chamber.   
     
     
         4 . The flush toilet bowl according to  claim 3 ,
 wherein the water supply pipe allows cleaning water to flow out in a direction approximately opposite to that of the second water discharge port.   
     
     
         5 . The flush toilet bowl according to  claim 3 ,
 wherein the second water discharge port has an opening area that is larger than that of an outlet port of the water supply pipe.   
     
     
         6 . A flush toilet bowl comprising:
 a toilet bowl portion;   a toilet drainage channel that communicates with the downstream side of the toilet bowl portion;   a toilet bowl main body that includes: a first water discharge port that is open on the upper periphery of the toilet bowl portion and that discharges cleaning water that forms a swirling flow swirling inside the toilet bowl portion in the planar view; and a second water discharge port that is open on the upper periphery of the toilet bowl portion and discharges cleaning water that is joined, on the downstream side of the cleaning water discharged from the first water discharge port and flowing on the surface of the toilet bowl portion, by the cleaning water discharged from the first water discharge port and forms a downward flow toward the toilet drainage channel; and   a toilet bowl cleaning device that supplies cleaning water to the first water discharge port and the second water discharge port such that the start of discharge of the cleaning water from the second water discharge port is delayed compared to the start of discharge of the cleaning water from the first water discharge port.   
     
     
         7 . The flush toilet bowl according to  claim 6 ,
 wherein the flow of the cleaning water discharged from the first water discharge port is changed to a downward flow when joining the cleaning water discharged from the second water discharge port, forming a mainstream that flows into the toilet drainage channel.   
     
     
         8 . The flush toilet bowl according to  claim 6 ,
 wherein the toilet bowl main body has a water supply chamber with the second water discharge port open toward the inside of the toilet bowl portion, and   wherein the toilet bowl cleaning device has a water supply pipe through which cleaning water flows out that is placed inside the water supply chamber.   
     
     
         9 . The flush toilet bowl according to  claim 8 ,
 wherein the water supply pipe allows cleaning water to flow out in a direction approximately opposite to that of the second water discharge port.   
     
     
         10 . The flush toilet bowl according to  claim 8 ,
 wherein the second water discharge port has an opening area that is larger than that of an outlet port of the water supply pipe.