JP2015068070A - Water closet device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a water closet device that can suppress noise generated during water supply to a tank.SOLUTION: A water closet device includes a flowing direction change part 350 which supplies water into a tank 20 by blocking the route of jet water and changing the flowing direction of the jet water from the inside of a throat pipe 320 to the outside of the throat pipe 320. The flowing direction change part 350 directs the flowing direction of the jet water to a lower side in the tank 20 without any disorder caused by a collision of the jet water during water supply to the tank.

Description

  The present invention relates to a flush toilet apparatus for washing a toilet body with flush water.

  2. Description of the Related Art Conventionally, a flush toilet apparatus using a jet pump type water supply mechanism is known as a mechanism for supplying flush water to a toilet body.

  The jet pump type water supply mechanism is provided with a throat pipe having one end connected to a flow path toward the toilet body and the other end opened opposite to the nozzle in a tank storing water. In this water supply mechanism, when jet water is sprayed from the nozzle toward the inside of the throat pipe through the opening, the water stored in the tank is also drawn, and inside the throat pipe, the water is largely directed toward the toilet body. A flow of water is flowing.

  With regard to the above water supply mechanism, Patent Document 1 discloses that after flowing water toward the toilet body, the opening of the throat pipe is completely shielded by the flow converter, and the jet water collides with the flow converter. A configuration is disclosed in which water is supplied into an empty tank by switching the traveling direction of jet water from the inside of the throat pipe to the outside of the throat pipe.

  Further, in Patent Document 2, after flowing water toward the toilet body, the flow path of the throat pipe is partially shielded with a ball, and the jet water collides with the ball, whereby the traveling direction of the jet water Is switched from the inside of the throat pipe to the outside of the throat pipe to supply water into the emptied tank.

Special table 2012-528960 gazette Japanese Patent No. 4713575

  However, in the water supply mechanism described in Patent Documents 1 and 2, when the traveling direction of the jet water is switched, the high-speed jet water collides with the flow converter or the ball, and the jet water splashes randomly from the collision point to all directions. To do. As a result, the force acting on the flow changer or the ball changes in small increments, and the flow changer or the ball vibrates, or the scattered jet water collides with another structural member to generate noise. The noise generated here propagates through the throat pipe and is transmitted to the user side, resulting in an unpleasant sound.

  Accordingly, an object of the present invention is to provide a flush toilet apparatus capable of suppressing noise generated when water is supplied to a tank for supplying water into the tank.

  In order to solve the above-described problems, a flush toilet apparatus according to the present invention is a flush toilet apparatus that discharges filth to a drain pipe with washing water, receives the filth, and is supplied with water as the washing water. A toilet body, a tank that stores water therein, and is provided so that the water can be supplied to the toilet body. A suction port is formed on one end of the tank. A throat pipe, in which water flowing into the toilet body is supplied from the suction port, a nozzle for injecting jet water from the suction port toward the inside of the throat pipe, and the tank After the water inside is supplied to the toilet body, the jet water path is shielded and the traveling direction of the jet water is switched from the inside of the throat pipe to the outside of the throat pipe. A traveling direction switching unit that supplies water into the tank, and the traveling direction switching unit switches the traveling direction and supplies the water into the tank. It is configured to switch the traveling direction of the jet water to the outside of the throat pipe without disturbing water.

  Thus, the flush toilet apparatus according to the present invention stores water therein as a mechanism for supplying flush water to the toilet body, and can supply this water to the toilet body. It has a tank provided. When water is supplied from the tank to the toilet body, the toilet body is washed and the filth is discharged.

  Inside the tank, a throat pipe having a suction port formed on one end side is arranged. In this throat pipe, the water flowing into the inside from the suction port is supplied to the toilet body.

  The water flowing into the inside from the suction port includes nozzle jet water. This nozzle sprays jet water from the suction port toward the inside of the throat pipe. As a result, the jet pump action is induced, and by this action, not only the water jetted from the nozzle flows into the suction port, but also the water stored in the tank is drawn in. In other words, when the jet pump action occurs, the flow rate of water flowing inside the throat pipe increases more than the flow rate of jet water jetted from the nozzle.

  Further, the flush toilet apparatus according to the present invention shields the course of the jet water after the water in the tank is supplied to the toilet body, and the jet water is not disturbed from the inside of the throat pipe to the outside of the throat pipe. There is a traveling direction switching section for switching and supplying water into the tank. Since the jet water is supplied into the tank by the traveling direction switching unit, no waste water is generated, the tank water supply time can be shortened, and the continuous cleaning performance can be improved.

  And this advancing direction switching part switches the advancing direction, without jet water being disturbed (without colliding and scattering) at the time of tank water supply which supplies water in a tank. As a result, the direction of the force acting on the traveling direction switching unit is restricted to the position direction, and noise due to vibration is not generated. Further, since the jet water is switched to the outside of the throat pipe without being disturbed, the jet water is not disturbed by colliding with the travel direction switching portion, and air is not involved in the water and noise is not generated.

  In the flush toilet apparatus according to the present invention, the traveling direction switching unit preferably directs the jet water whose traveling direction is switched to the lower side in the tank. As a result, since the jet water is directed downward when the tank is supplied, the water proceeds in the water that may exist in the lower part of the tank even after the water in the tank is supplied to the toilet body. Thereby, jet water receives the resistance of the water in a tank, and is decelerated. Since the jet water is decelerated by the water in the tank, it is possible to suppress the jet water from disturbing the water surface in the tank or penetrating from the water surface in the tank, and to suppress noise generated by these causes.

  In the flush toilet apparatus according to the present invention, the advancing direction switching unit is provided with air contact suppression means for suppressing the jet water from contacting the air existing inside the throat pipe when the tank is supplied with water. It is also preferred that

If the jet water comes into contact with the air in the throat pipe, the jet water has a high flow velocity. Therefore, when water is supplied to the tank, the jet water sucks the air in the throat pipe to generate noise.
On the other hand, in the preferred embodiment, by providing the air contact suppressing means, it is suppressed that the jet water comes into contact with the air in the throat pipe, so that the air in the throat pipe is not easily sucked even if jet water is jetted. The noise generated by the air being sucked can be suppressed.

  In the flush toilet apparatus according to the present invention, it is also preferable that a water level fall prevention means is provided in the tank for preventing the water level in the tank from falling due to the jet water when the tank is supplied with water. .

Conventionally, at the time of water supply to the tank, the jet water flows through the water stored in the tank, and the flow velocity is high. Noise may be generated by sucking air that exists outside the door.
On the other hand, in the said preferable form, the fall of the water surface by the jet water which advances the water in a tank can be suppressed by providing a water surface fall suppression means in a tank. As a result, it is difficult for air outside the throat pipe to be sucked, and noise generated by sucking the air can be suppressed.

  In the flush toilet apparatus according to the present invention, the water surface fall prevention means suppresses contact of the water with the water in the tank existing above the jet water when the tank is supplied with water. It is also preferable that a portion is provided.

Conventionally, at the time of tank water supply, in the process of jet water traveling in the water stored in the tank, the flow velocity is fast, so the water in the tank existing above the jet water is attracted to attract the water in the tank. The water surface may fall and generate noise.
On the other hand, in the said preferable form, by providing a tank water contact suppression part, it can suppress contacting with the water in the tank above jet water, and the water surface in the tank above jet water falls. This can be suppressed. As a result, it is difficult for air outside the throat pipe to be sucked, and noise generated by sucking the air can be suppressed.

  In the flush toilet apparatus according to the present invention, it is also preferable that the water surface fall prevention means is provided with an underwater agitation part for agitating the jet water in water during the tank water supply.

  According to the above preferred configuration, by providing the underwater stirring section for stirring the jet water in the water, the jet water loses directivity when the jet water collides with the underwater stirring section at the time of tank water supply. As a result, the water in the tank is prevented from being attracted, and the water surface in the tank can be prevented from falling. As a result, it is difficult for air outside the throat pipe to be sucked, and noise generated by sucking the air can be suppressed.

  ADVANTAGE OF THE INVENTION According to this invention, the noise which generate | occur | produces at the time of tank water supply can be suppressed.

It is sectional drawing which shows the flush toilet apparatus which concerns on 1st embodiment of this invention, Comprising: The cross section at the time of cut | disconnecting this flush toilet apparatus by the surface perpendicular | vertical to the left-right direction is shown. It is a top view of a flush toilet apparatus. It is a perspective view which shows the inside of a tank at the time of seeing the flush toilet apparatus from the back side. (A) schematically shows a state in which jet water is ejected from the nozzle when the water level in the tank is higher than the suction port (for example, full water level), thereby inducing the jet pump action. . (B) schematically shows a state in which the water level in the tank has dropped to the vicinity of the suction port, and the supply of water to the rim portion has stopped. The structure in the inside of a tank is shown typically. It is a flowchart for demonstrating the flow of operation | movement at the time of washing | cleaning of the flush toilet apparatus. It is a figure which shows typically the mode in the tank at the time of tank water supply immediately after the flow-path switching member switches the supply destination of jet water from the toilet bowl main body to a tank. It is sectional drawing of the flow-path switching member of the flush toilet apparatus which concerns on this 2nd embodiment. It is a figure which shows typically the mode in the tank at the time of tank water supply immediately after the flow-path switching member which concerns on this 2nd embodiment switches the supply destination of jet water from the toilet bowl main body to a tank. It is sectional drawing of the flow-path switching member of the flush toilet apparatus which concerns on this 3rd embodiment. In the flush toilet apparatus which concerns on this 3rd embodiment, it is a figure which shows typically the mode in the tank at the time of tank water supply immediately after the flow-path switching member switches the supply destination of jet water from the toilet bowl main body to a tank. is there. In the flush toilet apparatus which concerns on this 4th embodiment, it is a figure which shows typically the mode in the tank at the time of tank water supply immediately after the flow-path switching member switches the supply destination of jet water from the toilet bowl main body to a tank. is there. In the flush toilet apparatus which concerns on this 5th embodiment, it is a figure which shows typically the mode in the tank at the time of tank water supply immediately after the flow-path switching member switches the supply destination of jet water from the toilet bowl main body to a tank. is there.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In order to facilitate the understanding of the description, the same constituent elements in the drawings will be denoted by the same reference numerals as much as possible, and redundant description will be omitted.

<First embodiment>
A flush toilet apparatus according to a first embodiment of the present invention will be described with reference to FIGS. 1 and 2. FIG. 1 is a cross-sectional view of the flush toilet apparatus FT, showing a cross section when the flush toilet apparatus FT is cut along a plane perpendicular to the left-right direction. FIG. 2 is a top view of the flush toilet apparatus FT. In FIG. 2, in order to show the internal structure of the tank 20 described later, a state in which the upper cover 201 of the tank 20 is removed is illustrated.

  As shown in FIGS. 1 and 2, the flush toilet apparatus FT includes a toilet main body 10 and an upper surface of the toilet main body 10 on the rear side (the right side in FIG. 1 and the upper side in FIG. 2) of the toilet main body 10. The tank 20 installed in 101 is provided. The flush toilet device FT is a device that receives filth by the toilet body 10 and discharges the filth to the drain pipe SW with water (wash water) supplied from the tank 20.

  In the following description, the right side (left side in FIG. 2) viewed from the user seated on the toilet body 10 is referred to as the “right side” and is seated on the toilet body 10 unless otherwise specified. The left side when viewed from the state user is referred to as the “left side” (right side in FIG. 2). Further, the front side (left side in FIG. 1, lower side in FIG. 2) viewed from the user seated on the toilet body 10 is referred to as “front side” or “front side” and is seated on the toilet body 10. The rear side (the right side in FIG. 1 and the upper side in FIG. 2) viewed from the user in this state is referred to as “rear side” or “rear side”.

  The toilet body 10 includes a bowl portion 110, a rim portion 120, a water conduit 130, and a drain trap conduit 140. The bowl part 110 is a part that temporarily receives the filth falling from above. The rim portion 120 is formed on the upper edge portion of the bowl portion 110 and has a shape in which a part of the inner side surface of the bowl portion 110 is retreated toward the outer peripheral side as shown in FIG. Yes. As will be described later, the rim 120 is a flow path in which water supplied toward the bowl 110 is swirled. The rim part 120 is formed as a substantially circular (top view) flow path that goes around the upper edge of the bowl part 110.

  The water conduit 130 is a channel formed inside the toilet body 10 in order to guide the water supplied from the tank 20 to the bowl portion 110. One end of the water conduit 130 opens on the upper surface 101 of the toilet body 10, and serves as an inlet 131 for water supplied from the tank 20. The position where the inlet 131 is formed is a rear portion of the upper surface 101 of the toilet body 10 and a central portion in the left-right direction.

  The water conduit 130 is branched into two flow paths (a first water conduit 132 and a second water conduit 134) on the downstream side thereof. The downstream end of the first water conduit 132 that is one of the channels opens at the right side of the rim portion 120, and the opening serves as a water outlet (water discharge portion 133). When water is supplied from the tank 20 to the inlet 131, a part of the water passes through the inside of the first water conduit 132 and is ejected from the water discharge part 133 and supplied to the rim part 120.

  The second water conduit 134, which is the other channel, is open at the downstream end of the rim portion 120 on the left side and the rear side, and the opening serves as a water outlet (water discharge portion 135). ing. When water is supplied from the tank 20 to the inlet 131, a part of the water passes through the inside of the second water conduit 134 and is ejected from the water discharge portion 135 and supplied to the rim portion 120.

  The direction in which water is ejected from the water discharger 133 is a direction along the circumference of the rim 120 formed as a substantially circular flow path, and is a counterclockwise direction when viewed from above. The direction in which water is ejected from the water discharger 135 is also a direction along the circumference of the rim 120 formed as a substantially circular flow path, and is also a counterclockwise direction when viewed from above. As indicated by arrows in FIG. 2, the water spouted from the water discharger 133 and the water discharger 135 to the rim part 120 flows while swirling counterclockwise along the rim part 120, and the entire rim part 120. Then flows down toward the bowl 110.

  The drain trap pipe 140 is a flow path that connects the lower end of the bowl part 110 and the drain pipe SW. The drain trap pipe 140 has an ascending channel 141 formed so as to rise upward along the direction from the lower end of the bowl part 110 toward the downstream, and along the direction from the upper end of the ascending channel 141 toward the downstream. And a descending flow path 142 formed to have a downward slope. With such a configuration, water can be stored in a portion extending from the lower part of the bowl part 110 to the lower part of the ascending flow path 141, and the sealed water WT is formed by the stored water. A drain pipe SW is connected to the lower end of the descending flow path 142. The drain pipe SW is a pipe arranged inside the building, and its downstream end is connected to a sewer pipe (not shown).

  When water is supplied from the tank 20 toward the bowl portion 110, the water flows down from the entire rim portion 120 toward the bowl portion 110 while swirling and flowing through the rim portion 120 as described above. Water is added to the bowl part 110 from above, and is discharged from the lower end part of the bowl part 110 through the ascending channel 141 and the descending channel 142. As a result, a downward flow occurs in the water (sealed water WT) stored in the bowl portion 110.

  The filth that has been temporarily received in the bowl portion 110 is pushed downward by the water supplied from the upper rim portion 120 and moves toward the lower end of the bowl portion 110. Thereafter, the filth passes through the ascending channel 141 and reaches the descending channel 142 by the water flow, and falls together with the water toward the drain pipe SW.

  The tank 20 is a container in which water is stored, and supplies the water to the inlet 131 of the water conduit 130. The tank 20 includes a first tank part 210 and a second tank part 220 formed so as to extend a part of the bottom wall 211 of the first tank part 210 downward. The first tank part 210 and the second tank part 220 are both substantially rectangular parallelepiped containers, and their internal spaces communicate with each other. The second tank portion 220 is connected to a rear portion of the bottom wall 211 of the first tank portion 210.

  The bottom wall 211 of the first tank part 210 (the part on the front side of the second tank part 220) is in a state of being close to the part on the rear side of the upper surface 101 of the toilet body 10 from above. Specifically, an inlet 131 is formed in a rear side portion of the upper surface 101 of the toilet body 10, but the bottom wall 211 of the first tank unit 210 covers the periphery of the inlet 131 from above. The upper surface 101 of the toilet body 10 is close to the upper surface 101 from above. In addition, an opening 212 having substantially the same shape as the inlet 131 is formed in the bottom wall 211, and the opening 212 and the inlet 131 overlap in a top view. For this reason, the water stored in the tank 20 can flow into the water conduit 130 through the opening 212 and the inlet 131 and flow toward the bowl portion 110.

  As a result of arranging the first tank part 210 as described above, the second tank part 220 is located behind the toilet body 10. That is, it is in a state of being located further rearward than the rear end of the toilet body 10. Further, the bottom wall 221 of the second tank unit 220 is disposed at a position lower than the upper surface 101 of the toilet body 10.

  By arranging the tank 20 as described above, the front end portion of the tank 20 is positioned on the front side of the rear end portion of the toilet body 10. Further, the lower end portion of the tank 20 is located below the upper surface 101 of the toilet body 10. As a result, the dimension in the front-rear direction and the dimension in the vertical direction of the entire flush toilet apparatus FT are both small, and the design of the flush toilet apparatus FT is improved.

  Next, the internal configuration of the tank 20 will be described. FIG. 3 is a perspective view showing the inside of the tank 20 when the flush toilet apparatus FT is viewed from the rear side. As shown in FIG. 3, a water supply pipe 231, a main valve 233, a pilot valve 234, and a jet pump unit 300 are disposed inside the tank 20.

  The water supply pipe 231 is a pipe for supplying water toward the main valve 233, and is arranged to extend vertically upward from the bottom wall 221 of the second tank portion 220. The lower end of the water supply pipe 231 is connected to a water pipe (not shown) outside the tank 20. The upper end of the water supply pipe 231 is connected to the main valve 233 from below in the tank 20. The water supply pipe 231 is disposed in the tank 20 at a position on the left side of the center in the left-right direction.

  A constant flow valve 232 (not shown in FIG. 3) is arranged in the middle of the water supply pipe 231 (between the water pipe and the main valve 233). When the main valve 233 is opened, the flow rate of water flowing into the main valve 233 is constant by the constant flow valve 232, and does not fluctuate due to the water pressure in the water pipe.

  The main valve 233 is an open / close valve that opens and closes the water flow path from the water supply pipe 231 to the jet pump unit 300. A vacuum breaker 235 is provided between the main valve 233 and the jet pump unit 300, and the upstream side of the vacuum breaker 235 is prevented from being negatively pressured to prevent water from flowing backward. As described above, the water supply pipe 231 extends upward, and the main valve 233 and the vacuum breaker 235 are arranged at a high position in the tank 20. For this reason, the vacuum breaker 235 will not be submerged even when the water level of the tank 20 is full.

  The main valve 233 is provided with a pilot valve 234, and the operation of the pilot valve 234 is configured to switch between opening and closing of the main valve 233. A manual lever 236 disposed outside the tank 20 is connected to the pilot valve 234 via a transmission mechanism 237 disposed inside the tank 20. Further, a float 238 disposed inside the tank 20 is further connected to the pilot valve 234.

  When the manual lever 236 is operated by the user of the flush toilet apparatus FT, the operation is transmitted to the pilot valve 234 via the transmission mechanism 237, and the pilot valve 234 is opened. As a result, the main valve 233 is opened, and water flows from the water supply pipe 231 toward the jet pump unit 300. As will be described later, the water flowing toward the jet pump unit 300 is supplied to the water conduit 130 as cleaning water together with the water stored in the tank 20. For this reason, the water level inside the tank 20 gradually decreases.

  Even after the cleaning of the bowl part 110 is completed, the main valve 233 is not closed, and water continues to flow from the water supply pipe 231 toward the jet pump unit 300. The water that flows toward the jet pump unit 300 is supplied into the tank 20 and stored for the next cleaning. When water is supplied to the inside of the tank 20 (water injection into the tank 20), the water level inside the tank 20 gradually rises. The float 238 connected to the pilot valve 234 inside the tank 20 rises as the water level rises, whereby the pilot valve 234 is closed.

  Thus, when the water level inside the tank 20 rises, the pilot valve 234 is closed by the change in buoyancy that the float 238 receives. When the pilot valve 234 is closed, the main valve 233 is closed, and the supply of water from the water supply pipe 231 to the jet pump unit 300 is stopped. At this time, the arrangement of the float 238 is adjusted so that the amount of water stored in the tank 20 becomes a necessary amount for the next cleaning (so as to reach a predetermined full water level). .

  The jet pump unit 300 is for inducing a jet pump action by the water supplied from the water supply pipe 231 and thereby supplying water toward the water conduit 130. Such a jet pump unit 300 includes a nozzle 310 and a throat pipe 320.

  The nozzle 310 is a tube having one end connected to the vacuum breaker 235 via a connecting tube 239 and the other end formed with an injection port 311. The nozzle 310 is disposed in the vicinity of the bottom wall 221 of the second tank unit 220. When the main valve 233 is opened, the water supplied from the water supply pipe 231 flows through the connection pipe 239, reaches the nozzle 310, and is jetted as a high-speed water stream (jet water) from the jet port 311. The nozzle 310 is disposed at the rear side and right corner (corner in top view) of the second tank portion 220. As shown in FIG. 3, the nozzle 310 is U-shaped, and its downstream side is folded from the corner. The injection port 311 has an injection direction directed toward the inside of the throat pipe 320.

  The throat pipe 320 is a pipe having a circular cross section, and is disposed inside the tank 20 with a part thereof passing through an opening 212 (see FIG. 2) formed in the bottom wall 211. One end of the throat pipe 320 is connected to the inlet 131 of the water conduit 130, and a suction port 321 that is an opening is formed at the other end. In the throat pipe 320, a portion on the inlet 131 side of the water conduit 130 is along the vertical direction, and a portion on the suction port 321 side is inclined with respect to the horizontal plane. For this reason, the whole becomes an inverted U shape. As shown in FIG. 2, the throat pipe 320 is disposed inside the tank 20 in a state inclined with respect to the front-rear direction in a top view.

  The specific shape of the throat pipe 320 will be described in more detail. The throat pipe 320 is disposed on the rising portion 322 extending obliquely upward from the suction port 321, the bent portion 323 disposed on the downstream side (upper side) of the rising portion 322, and the downstream side (lower side) of the bent portion 323. And a descending portion 324 extending downward from the bent portion 323.

  The ascending portion 322 is a cylindrical tube having a uniform tube diameter as a whole, and is disposed in an inclined state with respect to the horizontal plane. The suction port 321 is formed at the lower end of the rising portion 322. The suction port 321 is formed so that the whole edge is along a horizontal plane.

  The descending portion 324 is a cylindrical tube having a uniform tube diameter as a whole, and is disposed along the vertical direction. The tube diameter of the descending part 324 is larger than the tube diameter of the ascending part 322. The tube diameter on the rising portion 322 side of the bent portion 323 is equal to the tube diameter of the rising portion 322. Further, the tube diameter of the bent portion 323 on the descending portion 324 side is equal to the tube diameter of the descending portion 324. For this reason, it can be said that the ascending portion 322 and the descending portion 324 having different tube diameters are smoothly connected by the bent portion 323.

  The configuration and operation of the jet pump unit 300 will be further described with reference to FIG. FIG. 4A schematically shows a state where jet water is injected from the nozzle 310 when the water level in the tank 20 is higher than the suction port 321 (for example, the full water level), thereby inducing the jet pump action. It is shown.

  When the main valve 233 is opened and jet water is injected from the injection port 311 of the nozzle 310, the jet water flows toward the inside of the ascending part 322. The lower portion of the rising portion 322 and the nozzle 310 are submerged in the water stored in the tank 20. For this reason, the water stored in the tank 20 is drawn into the rising portion 322 by the jet water ejected from the ejection port 311 and flows toward the water conduit 130. As a result of inducing such a jet pump action, not only jet water jetted from the jet port 311 of the nozzle 310 but also water drawn from around the suction port 321 flows inside the throat pipe 320. These flow through the water conduit 130 and are supplied to the rim portion 120 from the water discharge portions 133 and 135 as cleaning water.

  As described above, in the flush toilet apparatus FT, the flow rate of water supplied to the rim portion 120 is larger than the flow rate of jet water injected from the injection port 311 of the nozzle 310. In other words, even when the flow rate of jet water ejected from the ejection port 311 of the nozzle 310 is small, water having a sufficient flow rate as cleaning water is supplied to the rim portion 120. For this reason, even if the flush toilet apparatus FT is installed in an environment where the water pressure of the water pipe is low, sufficient washing performance can be exhibited.

  The total amount of water supplied to the rim portion 120 (and the bowl portion 110) as cleaning water is the amount of water previously stored in the tank 20 and jet water jetted from the jet port 311 of the nozzle 310. The amount will be added. Since it is not necessary to store all the wash water inside the tank 20, the tank 20 is downsized and its design is improved.

  By the way, of the water stored in the tank 20, the water present in the portion below the suction port 321 is not supplied from the suction port 321 to the inside of the throat pipe 320. As a result, it remains as residual water in the tank 20. However, as shown in FIG. 3 and the like, the nozzle 310 and the suction port 321 are both arranged inside the (narrow) second tank portion 220. For this reason, the amount of residual water remaining in the portion below the suction port 321 is relatively small.

  With such a configuration, the flush toilet apparatus FT reduces the amount of residual water at the time when the supply of water to the rim portion 120 is completed. As a result, most of the internal space of the tank 20 can be used as a space for storing water supplied to the rim portion 120 (water that does not become residual water). The increase in size is suppressed.

A flow path switching member 350 is attached in the vicinity of the lower end of the ascending portion 322, that is, in the vicinity of the suction port 321. The flow path switching member 350 is a rod-shaped member, and has a float 351 at one end along the longitudinal direction thereof and a switching plate 352 at the other end.
The flow path switching member 350 is not shown in FIG. 3 and the like referred to above.

  The flow path switching member 350 is attached such that the portion between the float 351 and the switching plate 352 is rotatable with respect to the vicinity of the lower end of the rising portion 322. As shown in FIG. 4A, when the water level in the tank 20 is higher than the suction port 321, the flow path switching member 350 rotates due to the buoyancy applied to the float 351. Specifically, the float 351 moves upward, the switching plate 352 moves downward, and stops at the positions shown in FIG.

  In the state of FIG. 4A, the jet water jetted from the nozzle 310 flows into the rising portion without directly hitting the switching plate 352. As a result, the jet pump action as described above is induced, and water as cleaning water is supplied to the rim portion 120.

  Thereafter, the water level in the tank 20 gradually decreases as the water in the tank 20 is supplied to the rim portion 120.

  FIG. 4B schematically shows a state in which the water level in the tank 20 has dropped to the vicinity of the suction port 321 and the supply of water to the rim portion 120 has stopped. When the water level in the tank 20 decreases to the vicinity of the suction port 321, the buoyancy applied to the float 351 decreases. For this reason, as shown in FIG. 4B, the flow path switching member 350 rotates so that the float 351 moves downward. The switching plate 352 moves upward so that all the jet water jetted from the nozzle 310 directly hits the switching plate 352.

  The opposed surface of the switching plate 352 that faces the injection port 311 has a concave curved shape. Further, the facing surface of the switching plate 352 is opposed to the entire injection port 311 and is arranged so that the traveling direction of almost all jet water can be switched. In addition, one end 354 of the concavely curved facing surface facing the injection port 311 is substantially parallel to the inner wall of the injection port 311, and the other end 356 of the facing surface is substantially parallel to the injection port 311 and obliquely downward of the tank 20. ing. When the jet water ejected from the nozzle 310 hits the opposing surface, the jet water flows along the opposing surface, changes its traveling direction by approximately 90 degrees, remains rectified (without disturbing the jet water), and the tank 20 Oriented to the lower side. As a result, the jet water jetted from the nozzle 310 does not flow into the rising portion 322 but is stored in the tank 20 as water for the next cleaning. Thus, the flow path switching member 350 is for switching the supply destination of the jet water jetted from the nozzle 310 from the toilet body 10 to the tank 20.

  Hereinafter, when the jet water jetted from the nozzle 310 is supplied into the tank 20 by the flow path switching member 350 (during the middle) is referred to as “tank water supply”.

  Here, in order to configure the flow path switching member 350 to switch the traveling direction of jet water without disturbing the jet water during tank water supply (including immediately after switching the traveling direction), for example, Focusing only on the switching plate 352, as described above, the surface of the switching plate 352 facing the injection port 311 has a concavely curved shape, and the switching plate 352 is opposed to the entire injection port 311. , Etc. In addition, the flow path switching member 350 is not particularly limited in order to direct the traveling direction of the jet water to the lower side in the tank 20, but for example, a concavely curved facing surface facing the injection port 311. And the other end 356 of the opposed surface is substantially parallel to the injection port 311 and is directed obliquely downward of the tank 20.

  FIG. 5 schematically shows a configuration inside the tank 20. As already described, the water supply pipe 231, the main valve 233, and the jet pump unit 300 are disposed inside the tank 20.

  In a state where the bowl portion 110 is not cleaned (standby state), the water level of the tank 20 is full. When the manual lever 236 is operated by the user of the flush toilet apparatus FT, the main valve 233 is opened as described above, and water is injected from the injection port 311 of the nozzle 310 (arrow in FIG. 5). AR1). The water stored in the tank 20 is drawn into the throat pipe 320 (arrow AR2 in FIG. 5) and supplied to the rim portion 120 as the cleaning water (arrow AR3 in FIG. 5).

  When the supply of water to the rim portion 120 is completed, the supply destination of water from the nozzle 310 is switched by the flow path switching member 350, and water injection (supply) to the tank 20 is started (arrow AR4 in FIG. 5). . The water level in the tank 20 gradually rises, and the pilot valve 234 is closed by the float 238 when the water level becomes full. At the same time, the main valve 233 is closed, whereby the water injection into the tank 20 is completed and the standby state is restored.

  The other configuration inside the tank 20 will be described with reference to FIG. 3 again. As shown in FIG. 3, a partition wall 240 is disposed inside the tank 20 so as to surround the descending portion 324 of the throat pipe 320. The partition wall 240 is formed to extend upward from the bottom wall 211. A part of the internal space of the tank 20 is partitioned by the partition wall 240, the front side wall surface 213 of the tank 20, the left side wall surface 214, and the bottom wall 211 of the first tank portion 210, thereby forming a small tank 260. The small tank 260 is a container having an upper portion opened to the inside of the tank 20, and is disposed in the front and left corner of the first tank unit 210. In the throat pipe 320, the lower end portion of the descending portion 324 is disposed inside the small tank 260. A suction port 321 is disposed outside the small tank 260.

  An opening / closing window 241 is provided in the vicinity of the lower end of the partition wall 240. The opening / closing window 241 is normally open, and the inside and outside of the small tank 260 communicate with the outside (the space behind the partition wall 240) through the opening / closing window 241. For this reason, in a state where the bowl part 110 is not washed (standby state), the water level stored in the tank 20 and the water level stored in the small tank 260 are equal.

  The manual lever 236 can be operated in two directions (large direction and small direction). When the manual lever 236 is operated in a large direction, the pilot valve 234 and the main valve 233 are opened while the open / close window 241 is opened. The water stored in the small tank 260 passes through the opening / closing window 241, flows out into the second tank unit 220, and reaches the suction port 321. For this reason, most of the water stored in the tank 20, including the amount stored in the small tank 260, is drawn into the throat pipe 320 and supplied to the rim portion 120.

  On the other hand, when the manual lever 236 is operated in the small direction, the open / close window 241 is closed and the pilot valve 234 and the main valve 233 are opened simultaneously. For this reason, the water stored in the small tank 260 out of the water stored in the tank 20 cannot pass through the opening / closing window 241 and remains in the small tank 260. As a result, the amount of water supplied to the rim portion 120 as cleaning water is small.

  In the following description, “the water level stored in the tank 20” or “the water level in the tank 20” indicates the water level outside the small tank 260. That is, the water level stored in the space in which the suction port 321 is arranged in the space divided into two by the partition wall 240 is shown. The water level stored in the small tank 260 is not considered in the following description.

  Next, the flow of jet water during cleaning and the level of water supplied into the tank 20 will be described with reference to FIGS.

  FIG. 6 is a flowchart for explaining the flow of operation of the flush toilet apparatus FT during washing. FIG. 7 is a diagram schematically showing a state in the tank 20 at the time of tank water supply immediately after the flow path switching member 350 switches the supply destination of the jet water from the toilet body 10 to the tank 20.

  First, when the manual lever 236 is operated by the user of the flush toilet apparatus FT (step S01), jet water is ejected from the nozzle 310, and as already described, the toilet main body 10 through the water conduit 130 by the jet pump action. Is supplied with water (step S02).

  The supply of water to the toilet body 10 is continued until the water level in the tank 20 decreases and the flow path switching member 350 is in the state shown in FIG. In other words, when the water continues to be supplied to the rim portion 120 and the water level in the tank 20 falls to a predetermined water level: the air level, the above supply ends (steps S03 and S04). The “air level” means the water level in the tank 20 when the buoyancy applied to the float 351 of the flow path switching member 350 is reduced and the flow path switching member 350 rotates to reach the state shown in FIG. It is. That is, the “air level” is the water level in the tank 20 when the supply of cleaning water to the rim portion 120 is stopped.

  When the flow path switching member 350 rotates to reach the state shown in FIG. 4B, the traveling direction of the jet water continuously ejected from the nozzle 310 is switched to the outside of the throat pipe 320 as described above. Water supply (water supply) into the tank 20 is performed (step S04). In this way, at the time of tank supply for supplying water into the tank 20, the water level in the tank 20 continues to rise, for example, linearly with the passage of time. When the water level in the tank 20 continues to rise and reaches the full water level, jet water injection from the nozzle 310 is stopped, and the supply of water into the tank 20 is stopped (steps S05 and S06). As a result, the flow path switching member 350 is rotated by the buoyancy applied to the flow and 351 by the water stored in the tank 20 and returns to the original state shown in FIG. Note that while the jet water continues to flow, the surface of the switching plate 352 continues to receive the force of the jet water and prevents the rotation due to the buoyancy.

  In such tank water supply, the flow path switching member 350 directs the traveling direction of the jet water downward in the tank 20 without disturbing the jet water (arrow AR4 in FIG. 7), as shown in FIG. Therefore, even when the jet water flow rate is high, the jet water is not greatly disturbed when the traveling direction of the jet water is switched. As a result, according to the flush toilet apparatus FT according to the first embodiment, it is possible to suppress noise generated when the traveling direction of the jet water is switched.

  Further, since the jet water is directed downward when the tank is supplied with water, the water advances in the water that may exist below the tank 20 even after the water in the tank 20 is supplied to the toilet body 10 (FIG. 7). Arrow AR4). Thereby, jet water receives the resistance of the water in the tank 20, and is decelerated. By decelerating the jet water, it is possible to suppress the jet water from disturbing the water surface in the tank 20 or penetrating from the water surface in the tank 20, and noise generated due to these can be suppressed.

  As mentioned above, according to the flush toilet apparatus FT which concerns on 1st embodiment, the noise which generate | occur | produces at the time of tank water supply can be suppressed.

<Second embodiment>
Next, a flush toilet apparatus according to a second embodiment of the present invention will be described. In the flush toilet apparatus according to the second embodiment, the configuration of the flow path switching member that switches the supply destination of jet water from the toilet body 10 to the tank 20 is different from the configuration of the flow path switching member 350 of the first embodiment. . About the structure of the flush toilet apparatus which concerns on other 2nd embodiment, it is the same as that of 1st embodiment.

  FIG. 8 is a cross-sectional view of the flow path switching member 350A of the flush toilet apparatus according to the second embodiment.

  As shown in FIG. 8, the flow path switching member 350A is a rod-shaped member having a float 351 at one end along the longitudinal direction thereof and a switching plate 352A at the other end. . The flow path switching member 350 </ b> A is attached such that a portion between the float 351 and the switching plate 352 </ b> A is rotatable with respect to the vicinity of the lower end of the rising portion 322.

  The switching plate 352A is provided with air contact suppression means 410 that suppresses jet water from coming into contact with the air existing inside the throat pipe 320 during tank water supply.

  The air contact suppression unit 410 may be integrated with or separate from the switching plate 352A. For example, in the second embodiment, the air contact suppressing unit 410 is integrated with the switching plate 352A. The air contact suppression means 410 is a portion that extends longer in the direction parallel to the traveling direction of the jet water after switching than the switching plate 352 according to the first embodiment during tank water supply (switching plate 352A shown in FIG. 8). At right side of dotted line L1). As a result, one end 354A of the switching plate 352A faces the nozzle 310 and the other end 356A of the switching plate 352A faces the throat tube 320 so as to block the suction port 321 between the nozzle 310 and the inner wall surface of the throat tube 320. It is like that.

  FIG. 9 schematically shows the inside of the tank 20 at the time of tank water supply immediately after the flow path switching member 350 </ b> A according to the second embodiment switches the supply destination of the jet water from the toilet body 10 to the tank 20. FIG.

If there is no air contact suppression means 410 in the flow path switching member 350A, the jet water comes into contact with the air in the throat pipe 320 at the time of tank water supply because the flow velocity is high, and sucks the air in the throat pipe 320. (Dotted arrow AR5 in FIG. 9) causes noise.
On the other hand, in the second embodiment, as shown in FIG. 9, the air contact suppression means 410 becomes a suction shield of the dotted arrow AR5 and is prevented from contacting the air in the throat pipe 320. The air in the throat pipe 320 is difficult to be sucked, and noise generated by sucking the air can be suppressed.

<Third embodiment>
Next, a flush toilet apparatus according to a third embodiment of the present invention will be described. In the flush toilet apparatus according to the third embodiment, the configuration of the flow path switching member that switches the supply destination of the jet water from the toilet body 10 to the tank 20 is different from the configuration of the flow path switching member 350A of the second embodiment. . About the structure of the flush toilet apparatus which concerns on other 3rd embodiment, it is the same as that of 2nd embodiment.

  FIG. 10 is a cross-sectional view of the flow path switching member 350B of the flush toilet apparatus according to the third embodiment.

  As shown in FIG. 10, the flow path switching member 350B is a rod-shaped member having a float 351 at one end along the longitudinal direction and a switching plate 352B at the other end. . The flow path switching member 350B is attached such that the portion between the float 351 and the switching plate 352B is rotatable with respect to the vicinity of the lower end of the rising portion 322.

  This switching plate 352B is provided with the same air contact suppression means 410 as in the second embodiment.

  At the tip of the air contact suppression means 410, a water level drop suppression means 412 is provided that suppresses the water level in the tank 20 from falling due to jet water.

  The water surface fall prevention means 412 may be integrated with or separate from the switching plate 352B. For example, in the third embodiment, it is integrated with the switching plate 352B. The water surface fall prevention means 412 is a tank water contact restraint portion at a portion extending longer in a direction parallel to the traveling direction of the jet water after switching than the switching plate 352A according to the second embodiment at the time of tank water supply (FIG. 10 on the right side of the dotted line L2 in the switching plate 352B shown in FIG. As a result, the water surface fall prevention means 412 prevents the jet water from coming into contact with the water in the tank 20 existing above the jet water during tank water supply.

  FIG. 11 shows the flush toilet apparatus according to the third embodiment. The flow path switching member 350B in the tank 20 at the time of tank water supply immediately after the supply destination of the jet water is switched from the toilet body 10 to the tank 20 is shown. It is a figure which shows a mode typically.

Conventionally, when water is supplied to the tank, the jet water travels through the water stored in the tank 20, and the water flow in the tank 20 falls due to the high flow velocity, causing the water surface in the tank 20 to fall and the throat. By sucking the air existing outside the tube 320 (dotted arrow AR6 in FIG. 11), noise can be generated.
On the other hand, in the flush toilet apparatus according to the third embodiment, as shown in FIG. 11, when the tank is supplied with water, the water surface fall prevention means 412 serves as a shield for suction of the dotted arrow AR6, and jet water Contact with water in the tank 20 existing above the water is suppressed. Thereby, the fall of the water surface by the jet water which advances the water in the tank 20 can be suppressed. As a result, it becomes difficult for air outside the throat pipe 320 to be sucked by the jet water, and noise generated by sucking the air can be suppressed.

<Fourth embodiment>
Next, a flush toilet apparatus according to a fourth embodiment of the present invention will be described. In the flush toilet apparatus according to the fourth embodiment, the configuration of the throat pipe is different from the configuration of the throat pipe 320 of the second embodiment. Other configurations of the flush toilet apparatus according to the fourth embodiment are the same as those of the second embodiment.

  FIG. 12 shows the flush toilet apparatus according to the fourth embodiment. The flow path switching member 350A in the tank 20 at the time of tank water supply immediately after the supply destination of the jet water is switched from the toilet body 10 to the tank 20 is shown. It is a figure which shows a mode typically.

  The throat pipe 320A of the flush toilet apparatus according to the fourth embodiment has a water surface fall prevention means 414 that further prevents the water surface in the tank 20 from falling due to jet water in addition to the configuration of the throat pipe 320 of the second embodiment. Is added.

  This water surface drop suppression means 414 is a tank water contact suppression portion attached to the end of the throat pipe 320A on the suction port 321 side and extending along the extending direction of the switching plate 352A (the traveling direction of the jet water after switching). is there. As a result, the water surface fall prevention means 412 prevents the jet water from coming into contact with the water in the tank 20 existing above the jet water during tank water supply.

Conventionally, when water is supplied to the tank, the jet water travels through the water stored in the tank 20, and the water flow in the tank 20 falls due to the high flow velocity, causing the water surface in the tank 20 to fall and the throat. By sucking air existing outside the tube 320 (dotted arrow AR7 in FIG. 12), noise can be generated.
On the other hand, in the flush toilet apparatus according to the fourth embodiment, as shown in FIG. 12, when the tank is supplied with water, the water surface fall prevention means 412 serves as a shield for suction of the dotted arrow AR7, and the jet water Contact with water in the tank 20 existing above the water is suppressed. Thereby, the fall of the water surface by the jet water which advances the water in the tank 20 can be suppressed. As a result, it becomes difficult for air outside the throat pipe 320 to be sucked by the jet water, and noise generated by sucking the air can be suppressed.

<Fifth embodiment>
Next, a flush toilet apparatus according to a fifth embodiment of the present invention will be described. In the flush toilet apparatus according to the fifth embodiment, the configuration of the tank is different from the configuration of the tank 20 of the second embodiment. About the structure of the flush toilet apparatus which concerns on other 5th embodiment, it is the same as that of 2nd embodiment.

  FIG. 13 shows a flush toilet apparatus according to the fifth embodiment. The flow path switching member 350A in the tank 20 at the time of tank water supply immediately after the supply destination of the jet water is switched from the toilet body 10 to the tank 20 is shown. It is a figure which shows a mode typically.

  The flush toilet apparatus according to the fifth embodiment is obtained by adding water surface fall prevention means 416 for preventing the water surface in the tank 20 from falling due to jet water to the configuration of the tank 20 of the second embodiment. is there.

  This water surface fall prevention means 416 is attached to the inner wall of the tank 20 ahead of the direction of travel of the jet water after switching, and is, for example, a triangular column-shaped underwater agitation section having an orthogonal surface 416A perpendicular to the direction of travel of jet water. . As a result, the water surface fall prevention means 416 causes the jet water to collide with the orthogonal surface 416A and stir in the water during tank water supply.

  According to the flush toilet apparatus according to the fifth embodiment, by providing an underwater agitation unit that agitates jet water in water, when jet water collides with the underwater agitation unit during jet water supply, jet water has directivity. Lost (arrow AR8 in FIG. 13). As a result, it is possible to suppress the water in the tank 20 from being attracted, and the water surface in the tank 20 can be prevented from falling. As a result, the air outside the throat pipe 320 becomes difficult to be sucked, and noise generated by sucking the air can be suppressed.

  In the above, a plurality of embodiments of the present invention have been described with reference to specific examples. However, the present invention is not limited to these specific examples. In other words, those specific examples that have been appropriately modified by those skilled in the art are also included in the scope of the present invention as long as they have the characteristics of the present invention. For example, the elements included in each of the specific examples described above and their arrangement, materials, conditions, shapes, sizes, and the like are not limited to those illustrated, but can be changed as appropriate. Moreover, each element with which each embodiment mentioned above is provided can be combined as long as technically possible, and the combination of these is also included in the scope of the present invention as long as it includes the features of the present invention.

10: Toilet bowl body 20: Tank 310: Nozzle 320, 320A: Throat tube 321: Suction port 350, 350A, 350B: Flow path switching member (travel direction switching unit)
354: Tank water inflow space 410: Air contact suppression means 412, 414, 416: Water surface fall prevention means FT: Flush toilet apparatus

Claims (6)

A flush toilet device that discharges filth to a drain pipe with washing water,
A toilet body that receives the filth and is supplied with water as the washing water;
Water is stored inside, and a tank provided to supply the water to the toilet body;
A throat pipe disposed inside the tank and having a suction port formed on one end thereof, and a throat pipe through which water flowing into the toilet body is supplied from the suction port;
A nozzle that jets jet water from the suction port toward the inside of the throat pipe;
After the water in the tank is supplied to the toilet body, the course of the jet water is shielded and the traveling direction of the jet water is switched from the inside of the throat pipe to the outside of the throat pipe. A traveling direction switching section for supplying water into the tank;
With
The advancing direction switching unit changes the advancing direction of the jet water without disturbing the jet water jetted from the nozzle when supplying water to the tank by switching the advancing direction. A flush toilet apparatus characterized by being configured to switch to the outside.   The flush toilet apparatus according to claim 1, wherein the traveling direction switching unit is configured to direct the jet water whose traveling direction is switched to a lower side in the tank.   The air travel suppression unit is provided in the traveling direction switching unit, the air contact suppressing means for suppressing the jet water from coming into contact with the air existing in the throat pipe when the tank is supplied with water. 2. The flush toilet apparatus according to 2.   The water flush according to claim 3, wherein a water surface fall prevention means is provided in the tank for preventing the water surface in the tank from falling due to the jet water when the tank is supplied with water. Toilet bowl device.   The water surface fall prevention means is provided with a tank water contact restraining part for restraining the jet water from coming into contact with water in the tank existing above the jet water when the tank is supplied with water. The flush toilet apparatus according to claim 4.   The flush toilet apparatus according to claim 4, wherein the water surface fall prevention means is provided with an underwater agitation unit for agitating the jet water in water when the tank is supplied with water.

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