JP4403879B2 - Hot water flush toilet - Google Patents

Description

  This application relates to a hot water flush toilet. More specifically, the present invention relates to a toilet bowl having a function of cleaning a human body part after a stool, and also relates to a warm water cleaning toilet bowl having an excellent cleaning function for a toilet bowl surface.

  Various cleaning methods for bowl surfaces in flush toilets are known. For example, a method of supplying bowl wash water to the bowl surface sequentially from the lower surface water discharge hole of the rim water supply channel arranged around the upper part of the toilet bowl surface, or the lower surface of the rim water supply channel is open, and depending on the water There are known methods such as cleaning the entire bowl surface, or forming a swirling water on the bowl surface by jetting high-pressure bowl cleaning water horizontally from a spout at one location behind the upper end of the bowl surface. (For example, Patent Documents 1 and 2).

On the other hand, various types of hot water cleaning toilets equipped with a human body cleaning nozzle (wet cleaning nozzle, bidet cleaning nozzle) that selectively cleans a human body part after a toilet are known. For example, Patent Document 3, Each of 4 and 5 discloses a warm water cleaning toilet that can clean the bowl surface more effectively than cold water cleaning by using hot water for local body cleaning for bowl cleaning. That is, in Patent Document 3, hot water in a hot water tank for storing hot water washing water can be jetted obliquely forward and downward from the bowl surface from a pre-washing nozzle, and a stool falling point on the bowl surface can be wetted in advance. A warm water flush toilet is disclosed. Patent Document 4 also discloses a hot water cleaning toilet equipped with a toilet cleaning nozzle capable of changing the water discharge direction of the hot water cleaning water in order to discharge the hot water in the hot water tank for pre-cleaning or filth cleaning. Is disclosed. Furthermore, Patent Document 5 discloses a warm water cleaning toilet that can discharge warm water in a warm water tank from a human body cleaning nozzle and a toilet cleaning nozzle by separate operations.
JP 2001-279788 A Japanese Patent Laid-Open No. 2002-146887 Japanese Patent Laid-Open No. 5-118076 JP 2000-248601 A JP 11-324063 A

  For example, in the conventional method of bowl washing of the flush toilet as described above, the washing water is flowed mainly so as to be concentrated around the stool falling part. In other words, most of the bowl washing water from the rim water supply channel or the water discharge hole efficiently flows through the stool falling portion.

  However, in actual use of the toilet bowl, dirt on the bowl surface may not only cover the area where the stool falls directly, but often the scattered part may spread over the entire bowl surface. In that case, the stool splashing part on the front surface or side surface of the bowl is washed away by the bowl washing water from the rim water supply channel or the like. However, since the bowl rear inclined surface is not originally a stool fall point, a sufficient amount of washing water is not supplied to this area, so that dirt from the stool splashing part attached to the bowl rear inclined surface is caused by the bowl washing water. Was difficult to wash away. In particular, when cleaning water is supplied by supplying water from a water pipe, the water flow depends on the water supply pressure of the water supply. The current situation is that water supply becomes extremely difficult.

  Such a situation is the same also in the case of the hot water toilet disclosed in Patent Document 3-5. That is, also in the case of the hot water toilet of Patent Document 3-5, the region where the hot water washing water is jetted is directed to the stool falling part where the filth is directly attached, Does not have effectiveness.

  Moreover, since the bowl surface rear inclined surface is not easily noticeable by the main body of the hot water cleaning device or the toilet seat, the remaining stool scattering portion that has not been cleaned by the bowl surface cleaning water solidifies and is difficult to remove even by subsequent brush cleaning. It becomes. In addition, the remaining stool droplets cause problems such as bad odor.

  The invention of this application solves the problems of the prior art from the background as described above, and effectively cleans the dirt on the inclined surface behind the bowl, which often remains without being cleaned by the conventional method. It is an object to provide a warm water flush toilet.

  The invention of this application is, firstly, in a hot water flush toilet equipped with a hot water tank and a human body washing nozzle for injecting hot water wash water from the hot water tank toward a human body part, via a pressure relief valve in the hot water tank. A toilet flushing nozzle is provided, and pressure relief drainage from the hot water tank is ejected from the toilet flushing nozzle toward the toilet bowl rear inclined surface.

  Second, a hot water cleaning toilet is provided in which the pressure relief drainage is ejected from the toilet cleaning nozzle in conjunction with the operation of the human body cleaning nozzle.

  According to the first aspect of the present invention, it is difficult to wash with a conventional flush toilet or a flush toilet equipped with a bowl surface warm water washing function. Water is jetted. This makes it possible to reliably clean and remove the dirt on the inclined rear surface of the bowl due to the stool scattering portion or the like.

  In the hot water toilet of Patent Literature 3-5, a part of the hot water in the hot water tank is used as dedicated water for bowl cleaning. On the other hand, in the flush toilet according to the invention of this application, it is possible to effectively use the excess water in the hot water tank, which has been discarded as “relief water for pressure relief” in the conventional apparatus, as bowl wash water.

  According to the second aspect of the invention, in conjunction with the ejection of the human body washing water from the human body washing nozzle, the pressure relief drainage is ejected from the toilet bowl washing nozzle toward the bowl rear inclined surface. That is, in the warm water flush toilet according to the second aspect of the present invention, the toilet flushing is performed in conjunction with the operation operation of the human body washing nozzle by the same configuration as the conventional toilet bowl (that is, without providing a special operation button or the like for the toilet flushing nozzle). Hot water washing water can be ejected from the nozzle.

  Hereinafter, embodiments will be described in detail with reference to the accompanying drawings.

  FIG. 1 is a side sectional view showing an embodiment of a hot water toilet provided by this application, and FIG. 2 is a plan sectional view thereof. In the hot water washing toilet illustrated in FIGS. 1 and 2, water supplied from the outside (water pipe and / or reserve tank) via the water supply electromagnetic valve (1) is heated in the hot water tank (2). A hose (3) is extended to the hot water tank (2), and its tip is connected to a human body washing nozzle (4) (a buttocks washing nozzle and a bidet washing nozzle). The hot water tank (2) is provided with a pressure relief valve (5), and the tip of the hose (6) connected to the pressure relief valve (5) is connected to the toilet flushing nozzle (7). The toilet bowl cleaning nozzle (7) has its spray port directed toward the bowl rear inclined surface (8).

  For example, in the hot water washing apparatus having such a configuration, when washing the human body part, the electromagnetic water supply valve (1) is opened by button operation and water is supplied to the hot water tank (2) from the outside, and the hot water tank (1) is supplied by this water supply pressure. The warm water inside is pushed out and ejected from the human body washing nozzle (4) toward the human body part through the hose (3). At this time, the hot water tank (2) is supplied with a sufficient amount of external water to eject the hot water washing water from the human body washing nozzle (4) vigorously. When the ejection of the washing water from the water is finished, the hot water tank (2) is brought into a high pressure state by the water filled in the hot water tank (2). Therefore, the pressure relief valve (5) is opened to lower the pressure in the hot water tank (2), and a part of the hot water in the hot water tank (2) is discharged as pressure relief drainage. Is discharged from the toilet bowl cleaning nozzle (7) to the bowl rear inclined surface (8) through the hose (6). Since this pressure relief drainage is pushed out by the pressure in the hot water tank (2), it is ejected with a sufficient water flow, and the bowl rear inclined surface (8) can be washed. Moreover, since warm water is superior in detergency compared to cold water, a sufficient cleaning effect can be obtained depending on the amount of water discharged as discarded water.

  In addition, the injection port of the toilet bowl washing nozzle (7) can have an appropriate shape and configuration so that the hot water washing water is jetted over a wide range of the bowl rear inclined surface (8). For example, as illustrated in FIG. 2, the front end of the toilet bowl cleaning nozzle (7) may have a wide shape, and the cleaning water may be sprayed radially from the injection port.

  As described above, in the hot water cleaning toilet according to the invention of this application, the hot water that is usually simply drained as waste water is used, and it is difficult to clean with the bowl cleaning water from the rim water supply channel or the like. The inclined surface (8) can be cleaned.

  It should be noted that the flushing of hot water washing water from the toilet bowl washing nozzle (7) can be performed by operating a dedicated button, or in conjunction with the discharge of bowl washing water from a rim water supply channel, As provided as the second invention of this application, it is also preferable to carry out in conjunction with the operation of the human body washing nozzle (4). That is, in the case of the second aspect of the invention, the warm water washing water is ejected from the toilet flushing nozzle (7) on the same principle as the discharge of the pressure relief drainage in the conventional toilet. No operation procedures are required.

  Of course, the invention of this application is not limited by the above examples. The mechanism for supplying water to the hot water tank, heating in the hot water tank, the mechanism of the pressure relief valve, the mechanism for operating the buttons, etc. Needless to say, various configurations and the like including the control system are possible.

It is the sectional side view which showed one Example of the hot water washing toilet bowl provided by this application. It is a plane sectional view of the warm water washing toilet bowl illustrated in FIG.

Explanation of symbols

1 Electromagnetic water supply valve 2 Hot water tank 3 Hose 4 Human body washing nozzle 5 Pressure relief valve 6 Hose 7 Toilet bowl washing nozzle 8 Bowl rear inclined surface

Claims (2)

  A hot water washing toilet comprising a hot water tank and a human body washing nozzle for injecting hot water washing water from the hot water tank toward a local body part, and a toilet flushing nozzle communicating with the hot water tank via a pressure relief valve is provided. A hot water flush toilet, wherein the pressure relief drainage from the hot water tank is ejected from the toilet flush nozzle toward the toilet bowl rear inclined surface.   The hot water flush toilet according to claim 1, wherein the pressure relief drainage is ejected from the toilet flushing nozzle in conjunction with the operation of the human body washing nozzle.

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