JP5858287B2 - Pumping toilet equipment - Google Patents

Description

  The present invention relates to a pressure-fed toilet device that discharges a filth by agitation and pressure-feeding in a state where fluidity is improved.

  In an environment where elderly people who are difficult to move to the toilet room, care recipients, etc. live, there is a strong demand to install a toilet device near the user, for example, next to a bed. For this reason, a toilet apparatus with a high degree of freedom of installation location is required.

  However, it is necessary to connect the flush toilet device to the sewer pipe, but it is difficult to change the position of the sewer pipe already installed in the building. For this reason, in the case where drainage is performed using the slope of the pipe connecting the toilet device and the sewage pipe, as in a general toilet device, the location of the toilet device is determined by the position of the existing sewage pipe. It will be restricted.

  Therefore, a pressure-feed toilet device has been developed as a toilet device having a high degree of freedom in the installation location. A pressure-feed toilet device is a toilet device provided with a storage tank separately from the toilet body, and the waste tank and cleaning water discharged from the toilet body (hereinafter, both are collectively referred to as “sewage”). It is a toilet device capable of pressure-feeding sewage from the storage tank toward the sewer pipe in a state where the fluidity is enhanced by storing in the storage tank and stirring in the storage tank.

  As described above, the pressure-feed type toilet device does not use the slope of the pipe connecting the toilet device and the sewage pipe to cause the sewage to reach the sewage pipe, but pumps the sewage by using a pumping device such as a pump. It reaches the sewer pipe. Therefore, since the installation location is not limited by the position of the existing sewage pipe, the degree of freedom of the installation location of the toilet device can be increased.

  In such a pressure-fed toilet device, when draining sewage from the toilet body and letting it flow into the storage tank, the air pressure in the storage tank rises because there is no escape for air present in the storage tank, There is a problem that smooth discharge of sewage from the toilet body is hindered. As a result, there is a possibility that a part of the filth remains in the bowl portion even though the supply of the washing water to the bowl portion of the toilet body is completed.

  As a solution to this, it is conceivable to discharge a part of the air from the inside of the storage tank to the surroundings when the sewage flows into the storage tank. However, it is not desirable because a bad odor leaks out from the storage tank to the surroundings together with the air. In addition, even if the air in the storage tank is discharged outdoors (not the surroundings), new piping work is required in this case.

  As another solution, in the following Patent Document 1, a pressure-fed toilet apparatus having a configuration in which an air storage unit is connected to a storage tank is proposed. In the pressure-fed toilet device described in Patent Document 1 below, the air storage portion is deformed to change its volume and function as a temporary air retreat location, thereby increasing the air pressure in the storage tank. Suppressed.

JP 2006-9414 A

  In the pressure-fed toilet device described in Patent Document 1, the air storage portion is expanded and contracted each time the sewage flows into the storage tank and the sewage flows out from the storage tank. For this reason, if it is used for a long time, an air storage part deteriorates and it breaks, and the bad smell in a storage tank may leak to the circumference | surroundings from the said damaged part.

  Moreover, since the connection piping that connects the air storage portion and the storage tank provides resistance to air flow, it is difficult to sufficiently suppress the increase in air pressure in the storage tank. In order to reduce the resistance when air flows into the air storage part, it is necessary to increase the size of the air storage part and the connecting piping, but in that case, the installation place of the pressure-feed toilet device will be restricted again. End up.

  This invention is made | formed in view of such a subject, The objective is the pumping type which can discharge | emit waste water smoothly from a toilet bowl main body, preventing that the air in a storage tank leaks around. To provide a toilet device.

  In order to solve the above-mentioned problem, a pressure-feed toilet apparatus according to the present invention is a pressure-feed toilet apparatus that discharges waste by agitating filth as washing water together with washing water and pumping in a state in which fluidity is enhanced. A toilet body having a bowl portion that is temporarily received, a discharge passage that is connected to the bowl portion and discharges wash water supplied to the bowl portion together with filth as waste water, and waste water discharged from the toilet body A storage tank that stores the wastewater in the storage tank, a stirring means that stirs the sewage in the storage tank, a pressure feeding means that pumps the sewage stirred by the stirring means to the outside of the storage tank, and the storage A drain pipe connected to the tank and for discharging the sewage pumped from the storage tank by the pumping means to the outside, and one end of the drain pipe at a position different from the drain pipe. And the other end is connected to the drain pipe so that the exhaust pipe communicates with the storage tank and the drain pipe, and the air flow from the bowl portion into the storage tank is suppressed. A first shielding means for shielding the discharge flow path; and an exhaust pump for discharging the air in the storage tank to the drain pipe via the exhaust pipe, and is discharged from the toilet body. Prior to the sewage flowing into the storage tank, the exhaust pump is driven in a state where the discharge passage is shielded by the first shielding means, and the inside of the storage tank is set to a negative pressure. .

  In this invention, the 1st shielding means which shields the discharge flow path of a toilet bowl main body is provided so that the distribution | circulation of the air from the bowl part of a toilet bowl main body into a storage tank may be suppressed. Further, a drain pipe for discharging the sewage in the storage tank to the outside and an exhaust pump capable of discharging the air in the storage tank to the drain pipe are further provided.

  This exhaust pump operates prior to the sewage discharged from the toilet main body flowing into the storage tank, and the discharge pump of the toilet main body is shielded by the first shielding means in the storage tank. The air is discharged to the drain pipe, and the inside of the storage tank is made negative pressure. Therefore, the sewage discharged | emitted from the toilet bowl main body will flow in the storage tank of the state which became negative pressure beforehand. In addition, the discharge of air by the exhaust pump is performed via an exhaust pipe that connects the storage tank and the drain pipe.

  When sewage flows into the storage tank, the air pressure in the storage tank is lower than the air pressure (atmospheric pressure) in the bowl portion. For this reason, although the air pressure in a storage tank rises when the sewage from a toilet bowl flows in, since the inside of a storage tank is negative pressure beforehand, the raise of the air pressure in a storage tank can be suppressed. For this reason, the smooth discharge of the sewage from the toilet body is hindered by the high air pressure in the storage tank, so that a part of the filth remains in the bowl portion. Furthermore, the air in the storage tank is not discharged to the surroundings of the storage tank, the air storage unit, or the like, but is discharged to the drain pipe. For this reason, the bad odor in a storage tank does not leak around.

  In the vicinity of the exhaust pipe communication part, which is a part of the drain pipe connected to the exhaust pipe, a part of the sewage flowing through the drain pipe flows into the exhaust pipe, or filth contained in the sewage is in the exhaust pipe. It may be attached to the inner wall. However, in the exhaust pipe communication portion, the flow of air discharged from the exhaust pipe to the drain pipe is formed by the exhaust pump, so that the inflow of sewage into the exhaust pipe is suppressed.

  Moreover, in the pressure-feed type toilet apparatus according to the present invention, it is also preferable to include a second shielding unit that suppresses air flow from the drain pipe into the storage tank.

  When the exhaust pump is driven and the air into the storage tank is discharged to the drain pipe via the exhaust pipe, the air pressure in the storage tank does not decrease if the air in the drain pipe flows into the storage tank. That is, since the air discharged to the drain pipe returns, the inside of the storage tank does not become negative pressure.

  In this preferable aspect, the 2nd shielding means which suppresses the distribution | circulation of the air from a drain pipe into a storage tank is provided. For this reason, it is suppressed that the air discharged | emitted to the drain pipe via the exhaust pipe returns in the storage tank, and the inside of a storage tank can be reliably made into a negative pressure.

  Moreover, in the pressure-feed type toilet device according to the present invention, the second shielding means suppresses air flow in a communication portion between the storage tank and the drain pipe by storing the flow prevention water in the storage tank. It is also preferable.

  In this preferable aspect, by storing water in the storage tank, the circulation of air in the communication portion between the storage tank and the drain pipe is suppressed. That is, the water (circulation prevention water) stored in the storage tank is used as the second shielding means for suppressing the flow of air from the drain pipe into the storage tank. For this reason, the flow of air from the drain pipe into the storage tank can be suppressed without providing a complicated mechanism, and the inside of the storage tank can be reliably set to a negative pressure.

  Moreover, in the pressure-feed type toilet apparatus according to the present invention, prior to the sewage discharged from the toilet body flowing into the storage tank, the flow-preventing water is discharged into the drain pipe by driving the pressure-feeding means. It is also preferable to do.

  In this preferred embodiment, prior to the sewage flowing into the storage tank, the pumping means is also driven in addition to driving the exhaust pump. By driving the pumping means, the flow preventing water stored in the storage tank is discharged to the drain pipe. Thereby, a water flow is formed in the exhaust pipe communication portion, which is a portion of the drain pipe to which the exhaust pipe is connected, and the air in the exhaust pipe is drawn into the drain pipe by the water flow. As a result, a negative pressure is generated in the exhaust pipe, and the air in the storage tank can be sucked into the exhaust pipe by the negative pressure.

  Thus, in this preferable aspect, in addition to discharging the air in the storage tank by driving the exhaust pump, the air in the storage tank is also discharged by forming a water flow in the exhaust pipe communication portion. As a result, the air pressure in the storage tank can be further reduced and a large negative pressure can be generated.

  ADVANTAGE OF THE INVENTION According to this invention, the pressure-feed type toilet apparatus which can discharge | emit sewage smoothly from a toilet bowl main body can be provided, preventing that the air in a storage tank leaks around.

It is a figure which shows the external appearance of the pressure-feed type toilet apparatus which concerns on embodiment of this invention. It is sectional drawing which shows typically the structure of the pressure-feed type toilet apparatus shown in FIG. It is a block block diagram which shows the control structure of the pressure-feed type toilet apparatus shown in FIG. It is typical sectional drawing for demonstrating operation | movement of the pressure-feed type toilet apparatus shown in FIG. It is typical sectional drawing for demonstrating operation | movement of the pressure-feed type toilet apparatus shown in FIG. It is typical sectional drawing for demonstrating operation | movement of the pressure-feed type toilet apparatus shown in FIG. It is typical sectional drawing for demonstrating operation | movement of the pressure-feed type toilet apparatus shown in FIG. It is typical sectional drawing for demonstrating operation | movement of the pressure-feed type toilet apparatus shown in FIG. It is typical sectional drawing for demonstrating operation | movement of the pressure-feed type toilet apparatus shown in FIG. It is typical sectional drawing for demonstrating operation | movement of the pressure-feed type toilet apparatus shown in FIG. It is sectional drawing which shows the structure of the aspirator of the pressure-feed type toilet apparatus shown in FIG.

  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.

  A pressure-feed toilet apparatus according to an embodiment of the present invention will be described with reference to FIGS. 1 and 2. FIG. 1 is a diagram showing an external appearance of a pressure-feed toilet apparatus CS according to an embodiment of the present invention. FIG. 2 is a cross-sectional view schematically showing the structure of the pressure-feed toilet apparatus CS.

  As shown in FIG. 1, the pressure-feed toilet apparatus CS is a flush toilet apparatus that can be installed near the user, such as next to the bed Bd. As will be described in detail later, the pressure-feed toilet apparatus CS receives the waste excreted from the user and then pumps the waste through the flexible pipe 254. The flexible pipe 254 is connected to the sewer pipe WP through the wall surface W of the room in which the pressure-feed toilet apparatus CS is installed, and the pressure-fed waste is discharged to the sewer pipe WP.

  The pressure-feed toilet apparatus CS includes a toilet body 100, a processing apparatus 200, and a cleaning water supply apparatus 300. The toilet body 100 includes a bowl part 110 that temporarily receives filth and a discharge channel 120 that is a channel for discharging the filth from the bowl part 110.

  In the lower part of the bowl part 110, a bowl outlet part 111 that is an outlet for filth is formed open, and one end of the discharge channel 120 is connected to the bowl outlet part 111. The discharge flow channel 120 has an ascending flow channel 121 formed so as to have an upward gradient along the direction from the bowl outlet portion 111 toward the downstream, and a downward gradient along the direction from the upper end of the ascending flow channel 121 toward the downstream. And a descending flow path 122 formed to be

  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 121, and sealed water is formed by the stored water. That is, a portion extending from the lower part of the bowl part 110 to the lower part of the ascending flow path 121 functions as a trap part 130 for forming sealed water.

  The discharge channel 120 further includes a horizontal channel 123 extending horizontally from the lower end of the descending channel 122. The filth received by the bowl part 110 flows into the bowl outlet part 111 together with the washing water supplied to the bowl part 110, and sequentially passes through the ascending flow path 121, the descending flow path 122, and the horizontal flow path 123. It flows into the storage tank 210 of 200 and is stored. The supply of cleaning water to the bowl part 110 will be described in detail later.

  The processing device 200 agitates and discharges the waste and washing water discharged from the toilet body 100 (hereinafter, both are collectively referred to as “sewage”) to the sewer pipe WP in a state where the fluidity is improved. It is a device to do. The processing apparatus 200 includes a storage tank 210, a pulsator 221 disposed inside the storage tank 210, an impeller 222 formed integrally with the pulsator 221, and an exhaust pump 560. In addition, the processing apparatus 200 in this embodiment is comprised as a portable apparatus which can be retrofitted with respect to a general toilet bowl. However, the embodiment of the present invention is not limited to such an aspect, and the processing apparatus 200 may be configured as a stationary apparatus integrally formed with the toilet bowl.

  The storage tank 210 is a container formed in a substantially cylindrical shape for storing sewage inside, and a horizontal flow path 123 of the discharge flow path 120 is connected to a side surface thereof. For this reason, the bowl part 110, the discharge flow path 120, and the storage tank 210 are in a state where the inside communicates.

  An intake valve 550 is disposed on the upper portion of the storage tank 210. The intake valve 550 is an open / close valve that opens and closes a path for introducing outside air into the storage tank 210, and its operation is controlled by a control device 500 (not shown in FIGS. 1 and 2). At the time of standby of the pressure-feed toilet device CS (before the user defecates), the intake valve 550 is in a closed state. As will be described later, the inside of the storage tank 210 may be in a negative pressure state. However, if the intake valve 550 is opened, outside air is introduced into the storage tank 210 and the negative pressure state is eliminated. It is possible to do.

  A discharge port 211 that is an opening for discharging sewage is formed at a position lower than the height of the portion to which the horizontal flow path 123 is connected in the side surface of the lower portion of the storage tank 210. In addition, a fixed drain pipe 250 that forms part of a pipe for discharging sewage toward the sewer pipe WP is connected to the discharge port 211.

  The pulsator 221 and the impeller 222 are integrally formed and fixed to the lower end of a rod-shaped shaft SH arranged along the central axis of the storage tank 210. The upper end of the shaft SH is fixed with respect to the rotation shaft of the rotary motor 530 disposed at the upper part of the storage tank 210. For this reason, when the rotary motor 530 operates, the shaft SH rotates around its central axis, and both the pulsator 221 and the impeller 222 rotate. The operation of the rotary motor 530 is controlled by the control device 500.

  The pulsator 221 is formed as a plurality of plates arranged radially around the shaft SH, and each plate is parallel to the central axis of the shaft SH. When the pulsator 221 is rotated by the rotation motor 530, the sewage stored in the storage tank 210 is agitated, and the sewage (excrement) is mixed with the wash water while being pulverized. That is, the pulsator 221 functions as a stirring means in the present invention.

  The impeller 222 is an impeller that can impart momentum to the sewage by rotating, and is integrally formed with the pulsator 221 below the pulsator 221. The impeller 222 is disposed at a position that is substantially the same height as the discharge port 211. When the impeller 222 rotates, sewage is pumped from the discharge port 211 toward the fixed drain pipe 250 and discharged toward the sewer pipe WP. Is done. That is, the impeller 222 functions as a pressure feeding unit in the present invention.

  The fixed drain pipe 250 connected to the discharge port 211 is connected to the discharge port 211 with one end connected to the discharge port 211 and extending in the horizontal direction, and from the other end of the first pipe unit 251 to the first vertical extension. A two-pipe part 252 and a third pipe part 253 extending in the horizontal direction from the upper end of the second pipe part 252 are provided.

  The height of the third conduit portion 253 is lower than the height of the overflow edge 112 of the bowl portion 110. Here, the fixed drain pipe 250 is not made of a flexible hose like a flexible hose, but is formed of a resin (for example, vinyl chloride) having a fixed overall shape. Furthermore, the fixed drain pipe 250 is fixed so as not to rotate or the like at the connection portion between the first pipe line portion 251 and the storage tank 210.

  As a result, the height of the third duct portion 253 with respect to the overflow edge 112 is fixed so as to be always constant and does not change. In other words, even if there is an error or the like during construction of the pressure-feed toilet device CS, the height of the third conduit portion 253 overflows and becomes higher than the height of the edge 112, or the third conduit The height of the portion 253 does not become lower than the connection portion between the fixed drain pipe 250 and the storage tank 210.

  A flexible pipe 254 is connected to the downstream end portion of the third pipe portion 253 via the aspirator 400. The flexible pipe 254 is a flexible hose and, like the fixed drain pipe 250, forms part of a pipe for discharging sewage toward the sewer pipe WP. The flexible pipe 254 is disposed so as to penetrate the wall surface W of the room where the pressure-feed toilet apparatus CS is installed, and its downstream end is connected to the sewer pipe WP.

  As described above, since the flexible pipe 254 is a flexible hose, the flexible pipe 254 is hung from the downstream end of the third pipe section 253, and is on the floor surface of the room where the pressure-feed toilet apparatus CS is installed. It is arranged to crawl. In addition, the height of the portion of the wall surface W through which the flexible pipe 254 passes is lower than the height of the overflow edge 112. As a result, the fixed drain pipe 250 (first pipe section 251, second pipe section 252 and third pipe) that forms a drain pipe for discharging the sewage pumped from the storage tank 210 to the outside (the sewer pipe WP). The highest portion of the passage portion 253) and the flexible pipe 254 is the third conduit portion 253.

  As shown in FIG. 11, the aspirator 400 that is disposed between the third pipe portion 253 and the flexible pipe 254 and connects them is a substantially T-shaped pipe. The aspirator 400 includes a first cylindrical portion 410 that is fitted inside with respect to an end portion of the third pipe portion 253, a second cylindrical portion 420 that is fitted inside with respect to an end portion of the flexible pipe 254, A third cylindrical portion 430 is formed between the cylindrical portion 410 and the second cylindrical portion 420, and forms a pipe line perpendicular to them. More specific shapes and functions of the aspirator 400 will be described later.

  Returning to FIG. 2, the description will be continued. An exhaust pump 560 is disposed in the upper part of the storage tank 210. The exhaust pump 560 discharges air sucked from the intake port from the exhaust port, and is arranged in a state where the intake port communicates with the inside of the storage tank 210. One end of the exhaust pipe 260 is connected to the exhaust port of the exhaust pump 560, and the other end of the exhaust pipe 260 is connected to the third cylindrical portion 430 of the aspirator 400. The exhaust pipe 260 is a substantially L-shaped pipe formed of vinyl chloride. The exhaust pipe 260 connects the storage tank 210 and the drain pipe (the fixed drain pipe 250, the aspirator 400, and the flexible pipe 254) to the exhaust pump 560. It communicates through.

  The operation of the exhaust pump 560 is controlled by the control device 500. When the exhaust pump is driven by the control device 500, the air in the storage tank 210 is sucked by the exhaust pump 560 and drained through the third cylindrical portion 430 of the aspirator 400 (the fixed drain pipe 250, the aspirator 400, and the flexible pipe). 254).

  The cleaning water supply device 300 is a device for supplying cleaning water to the bowl portion 110, and includes a water storage tank 310 that stores the cleaning water, and a water supply pipe 320 that is a pipe that supplies water from the water supply to the water storage tank 310. And a water supply valve 520 provided in the water supply pipe 320 and an opening / closing mechanism 330 for opening and closing the flow path of the wash water supplied from the water storage tank 310.

  The toilet body 100 is formed with an internal flow path 140 for supplying cleaning water to the bowl portion 110, and the downstream end of the internal flow path 140 is open to the inner surface of the bowl portion 110 (opening portion). 141). Further, the upstream end portion of the internal flow path 140 opens upward (opening 142) on the installation surface, which is the portion of the toilet body 100 where the water storage tank 310 is installed.

  The water storage tank 310 is a tank formed so as to be a substantially rectangular parallelepiped, and is installed at the rear part of the toilet main body 100 (the part where the user turns his back). A through hole 311 is formed in the bottom surface of the water storage tank 310, and the water storage tank 310 is installed on the upper part of the toilet body 100 so that the position of the through hole 311 and the position of the opening 142 coincide with each other in a top view. ing. For this reason, the wash water stored in the water storage tank 310 flows into the internal flow path 140 through the through hole 311 and the opening 142, and then is supplied to the bowl 110 from the opening 141.

  The water supply pipe 320 is a pipe for supplying water from the water supply to the water storage tank 310, and is arranged in a state of penetrating the upper part of the side surface of the water storage tank 310. The upstream end of the water supply pipe 320 is connected to the water supply, and the downstream end is opened inside the water storage tank 310.

  A water supply valve 520 is disposed in a portion of the water supply pipe 320 outside the water storage tank 310. The water supply valve 520 is an electromagnetic valve that switches between opening and closing of the water supply pipe 320, and its opening / closing operation is controlled by the control device 500. That is, the control device 500 controls the supply and stop of the cleaning water to the water storage tank 310 by controlling the operation of the water supply valve 520.

  The opening / closing mechanism 330 includes a valve body 331, a ball chain 332, a valve body drive unit 540 (not shown in FIG. 2), and a drain lever 510. The valve body 331 is made of rubber, and covers the through hole 311 at the bottom of the water storage tank 310 to prevent the cleaning water in the water storage tank 310 from flowing into the through hole 311.

  The lower end of the ball chain 332 is connected to the valve body 331, and the upper end of the ball chain 332 is connected to the valve body driving unit 540. The valve body driving unit 540 can pull up the ball chain 332 by the operation of the motor, and operates in response to a control signal from the control device 500. When the ball chain 332 is pulled up by the valve body drive unit 540, the valve body 331 moves away from the bottom of the water storage tank 310, so that the cleaning water in the water storage tank 310 flows into the through hole 311 and enters the bowl portion 110 from the opening 141. Supplied.

  The drain lever 510 is operated by the user in order to start the supply of the cleaning water to the bowl portion 110, and is disposed on the side surface (outside) of the water storage tank 310. When the drain lever 510 is operated by the user, an operation signal corresponding to the operation is transmitted to the control device 500. The control device 500 receives the operation signal, and controls the valve body driving unit 540 to pull up the ball chain 332 and start supplying cleaning water to the bowl unit 110.

  When the supply of the washing water to the bowl part 110 is completed, the control device 500 controls the valve body driving unit 540 to lower the ball chain 332 and the valve body 331 so that the valve body 331 again covers the through hole 311. . Thereafter, the control device 500 controls the water supply valve 520 to supply a predetermined amount of water from the water supply into the water storage tank 310 for storage. In addition, as will be described later, the control device 500 may supply the cleaning water to the bowl portion 110 by controlling the valve body driving portion 540 even when the drain lever 510 is operated.

  Next, a control configuration of the pressure-feed toilet apparatus CS will be described with reference to FIG. FIG. 3 is a block configuration diagram showing a control configuration of the pressure-feed toilet apparatus CS. As described so far, the pressure-fed toilet device CS includes the control device 500, the drain lever 510, the water supply valve 520, the rotary motor 530, the valve body drive unit 540, the intake valve 550, and the exhaust pump 560. And.

  The control device 500 is a computer system that includes a CPU, a ROM, a RAM, and an input / output interface, and controls each part of the pressure-feed toilet device CS. The drain lever 510 outputs an operation signal corresponding to the operation of the drain lever 510 performed by the user to the control device 500. The control device 500 outputs predetermined control signals to the water supply valve 520, the rotary motor 530, the valve body drive unit 540, the intake valve 550, and the exhaust pump 560, and controls these operations.

  The water supply valve 520, the rotary motor 530, the valve body drive unit 540, the intake valve 550, and the exhaust pump 560 direct state signals (for example, the rotational speed of the rotary motor 530, etc.) indicating their state to the control device 500. May be transmitted. In that case, the control apparatus 500 can grasp | ascertain the state of each part of the pressure-feed type toilet apparatus CS with a status signal, and can perform more appropriate and reliable control based on it.

  Next, a specific operation when the pressure-feed toilet apparatus CS pumps filth will be described with reference to FIGS. 2 and 4 to 10. 4 to 10 are schematic cross-sectional views for explaining the operation of the pressure-feed toilet apparatus CS.

  FIG. 2 shows the pressure-feed toilet apparatus CS during standby. As shown in FIG. 2, at the time of standby, an amount of cleaning water necessary for cleaning the bowl portion 110 is stored in the water storage tank 310. Further, water is also stored in the trap portion 130, and air cannot flow between the space in the bowl portion 110 and the storage tank 210. That is, sealed water is formed in the trap part 130.

  Furthermore, water is also stored inside the storage tank 210, and the water level is higher than the upper end of the discharge port 211 and lower than the upper end of the horizontal flow path 123. For this reason, the flow of air from the fixed drain pipe 250 into the storage tank 210 is suppressed by the water stored in the storage tank 210 (flow prevention water). Further, the water stored in the storage tank 210 is also used as water for forming a water flow for generating a negative pressure (jet water flow) inside the aspirator 400, as will be described later.

  In the standby state shown in FIG. 2, the water supply valve 520 is closed, and the valve body 331 covers the through hole 311 at the bottom of the water storage tank 310. Further, the rotary motor 530 is stopped, and the intake valve 550 is closed. The exhaust pump 560 is also stopped, and the air pressure inside the storage tank 210 is equal to the atmospheric pressure.

  FIG. 4 shows a state immediately after the user of the pressure-feed toilet apparatus CS completes the defecation and operates the drain lever 510 to start supplying the wash water to the bowl portion 110. Inside the bowl part 110, there is filth (excretion) (not shown), and the filth is submerged in the sealed water of the trap part 130. At the time shown in FIG. 4 (immediately after the drain lever 510 is operated), the cleaning water is not yet supplied from the water storage tank 310 to the bowl 110, and prior to that, the exhaust pump 560 is driven and the rotary motor 530 is turned on. Driving is performed simultaneously.

  When the drain lever 510 is operated, the control device 500 drives the exhaust pump 560 and starts discharging the air in the storage tank 210 toward the third cylindrical portion 430 of the aspirator 400. Since water is stored in the storage tank 210 so that the water level is higher than the upper end of the discharge port 211, the air discharged toward the third cylindrical portion 430 passes through the fixed drain pipe 250 into the storage tank 210. Cannot be returned to the sewage pipe WP through the flexible pipe 254.

  Further, the sealed water formed in the trap part 130 is in a state where air cannot flow between the space in the bowl part 110 and the storage tank 210. As a result of the air in the storage tank 210 being discharged to the sewer pipe WP in this state, the air pressure in the storage tank 210 gradually decreases, and the storage tank 210 becomes negative pressure. The air flow at this time is indicated by an arrow AA1 in FIG.

  At the same time as the exhaust pump 560 is driven, the control device 500 drives the rotary motor 530 to rotate both the pulsator 221 and the impeller 222 via the shaft SH. When the impeller 222 rotates, the water stored in the storage tank 210 is given momentum, flows into the fixed drain pipe 250, and flows toward the sewer pipe WP via the flexible pipe 254. For this reason, the amount of water stored in the storage tank 210 gradually decreases. The flow of water at this time is indicated by an arrow AW1 in FIG.

  As already described, due to the sealing water formed in the trap part 130, air cannot flow between the space in the bowl part 110 and the storage tank 210. As a result of the water in the storage tank 210 being discharged to the sewer pipe WP in this state, the air pressure in the storage tank 210 is further lowered.

  Further, the water that flows into the fixed drain pipe 250 by the rotation of the impeller 222 flows into the flexible pipe 254 from the third pipe section 253 through the aspirator 400. For this reason, in the aspirator 400, water flows from the first cylindrical portion 410 toward the second cylindrical portion 420. Referring to FIG. 11, a space between the first cylindrical portion 410 and the second cylindrical portion 420 is an end portion of the third cylindrical portion 430 and forms an exhaust pipe communication portion 450. The water flowing from the first cylindrical portion 410 toward the second cylindrical portion 420 is jetted from the first cylindrical portion 410 to the exhaust pipe communicating portion 450 to form a jet water flow. This jet water flow passes through the exhaust pipe communication part 450 and reaches the inside of the second cylindrical part 420, and then flows inside the flexible pipe 254.

  When the jet water flow is formed in the exhaust pipe communication portion 450 as described above, the air that was present inside the third cylindrical portion 430 is drawn into the second cylindrical portion 420, and the sewage pipe is passed through the flexible pipe 254. It is discharged to WP. Since the third cylindrical portion 430 communicates with the storage tank 210 by the exhaust pipe 260, the air in the storage tank 210 is also drawn into the second cylindrical section 420 through the exhaust pipe 260 and discharged to the sewer pipe WP. As a result, the air pressure in the storage tank 210 is further lowered, and a large negative pressure is generated in the storage tank 210 in FIG.

  At this time, since the inside of the discharge channel 120 also has a negative pressure, part of the sealed water formed in the trap part 130 may be drawn into the storage tank 210. However, the amount of water drawn in is suppressed by the ascending flow path 121, and most of the water remains in the trap unit 130. As a result, the state where the air cannot flow between the space in the bowl part 110 and the storage tank 210 (the state where the discharge flow path 120 is shielded) is maintained.

  Subsequently, the control device 500 operates the valve body driving unit 540 while maintaining the state where the exhaust pump 560 is being driven and the state where the pulsator 221 and the impeller 222 are rotating, and the ball chain 332 and the valve body are operated. 331 is pulled up (FIG. 5). For this reason, the cleaning water in the water storage tank 310 flows into the through hole 311 and is supplied to the bowl portion 110 from the opening 141. This flow of water is indicated by an arrow AW2 in FIG.

  When the cleaning water is supplied to the bowl part 110, the cleaning water, the sealing water formed in the trap part 130, and the filth in the trap part 130 are mixed to become dirty water and enter the discharge channel 120. Inflow.

  The sewage that has flowed into the discharge channel 120 from the bowl outlet portion 111 flows into the storage tank 210. At this time, since the storage tank 210 is previously in a negative pressure (that is, a state lower than the atmospheric pressure above the bowl portion 110), the sewage smoothly flows into the storage tank 210 and stored. Moreover, although the air pressure in the storage tank 210 rises by the inflow of sewage, since the inside of the storage tank 210 is negative in advance, an increase in the air pressure in the storage tank 210 is suppressed.

  When most of the washing water in the water storage tank 310 is supplied to the bowl portion 110, the control device 500 operates the valve body driving unit 540 to pull down the ball chain 332 and the valve body 331, and the valve body 331 becomes a through hole. It returns to the state which has covered 311 (FIG. 6). At this time, the control device 500 maintains the state where the exhaust pump 560 is driven and the state where the pulsator 221 and the impeller 222 are rotating. At the same time as the supply of the cleaning water to the bowl part 110 is completed, the control device 500 increases the rotational speed of the rotary motor 530.

  The sewage stored in the storage tank 210 is agitated by the rotation of the pulsator 221. Thereby, as a result of mixing filth (excretion) with washing water while being pulverized, the fluidity of sewage is increased. The sewage having increased fluidity is pumped by the impeller 222, smoothly flows through the fixed drain pipe 250, the aspirator 400, and the flexible pipe 254 from the discharge port 211, and is discharged to the sewer pipe WP. In addition, the flow of the sewage at this time is shown by AW3 in FIG.

  By discharging sewage from the storage tank 210 toward the sewer pipe WP, the amount of sewage gradually decreases, and finally the sewage remains in the storage tank 210 only slightly ( FIG. 7). The flow rate of the sewage flow indicated by arrow AW3 and the air flow indicated by arrow AA1 gradually decrease. At this time, the cleaning water (sealed water) remaining in the trap part 130 maintains a state where air cannot flow between the space in the bowl part 110 and the storage tank 210. For this reason, the inside of the storage tank 210 is also in a negative pressure state in FIG.

  When most of the sewage is discharged from the storage tank 210, the control device 500 stops the exhaust pump 560 and the rotary motor 530, and opens the intake valve 550 almost simultaneously (FIG. 8). For this reason, outside air is introduced into the storage tank 210 through the intake valve 550, and the inside of the storage tank 210, the discharge flow path 120, the fixed drain pipe 250, the aspirator 400, and the flexible pipe 254 is all at atmospheric pressure. The air flow at this time is indicated by AA2 in FIG. After the inside of the storage tank 210 or the like becomes atmospheric pressure, the control device 500 returns the intake valve 550 to the closed state.

  Subsequently, the control device 500 drives the water supply valve 520 to open it, and starts supplying cleaning water from the water supply pipe 320 to the water storage tank 310 (FIG. 9). The flow of water at this time is indicated by AW4 in FIG. The control device 500 drives the water supply valve 520 to a closed state after the water level in the water storage tank 310 rises and becomes a predetermined amount higher than the water level during standby shown in FIG.

  Subsequently, the control device 500 pulls up the ball chain 332 by controlling the valve body driving unit 540, and starts supplying cleaning water to the bowl unit 110 (additional water supply) again (FIG. 10). The cleaning water supplied at this time is replenished to the trap unit 130 as sealed water, and a part of the flush water overflows from the upper end of the ascending channel 121 and flows through the descending channel 122 (arrow AW5) and is stored in the storage tank 210. Is done. At this time, the water stored in the storage tank 210 is used as water for forming a jet water flow in the exhaust pipe communication portion 450 when the toilet main body 100 is washed next time (when the drain lever 510 is operated next time). It is what is done.

  When the water level stored in the storage tank 210 rises to the water level at the time of standby shown in FIG. 2, the control device 500 lowers the ball chain 332 and the valve body 331 by operating the valve body driving unit 540, The supply of cleaning water to the bowl part 110 is stopped. The water level in the water storage tank 310 at this time is the same as the water level in the water storage tank 310 during standby shown in FIG. In other words, the amount of cleaning water supplied to the water storage tank 310 after cleaning the filth (the amount of water in the water storage tank 310 in FIG. 9) is the same as that in the water storage tank 310 during standby shown in FIG. The amount of water is substantially the same as that obtained by adding the amount of water to be stored in the storage tank 210.

  When the supply of the washing water to the bowl part 110 is stopped, the pressure-feed toilet apparatus CS is again in the standby state shown in FIG. Note that, immediately after the supply of cleaning water to the bowl portion 110 is stopped, the water (sealed water) existing in the trap portion 130 is subjected to a force toward the downstream side (the storage tank 210 side) due to inertia. .

  At this time, if the inside of the storage tank 210 remains at a negative pressure, the suction force due to the negative pressure simultaneously acts on the sealed water in addition to the above-described force. As a result, much of the water that should be stored as sealed water in the trap part 130 flows into the storage tank 210 by these forces (even after the supply of cleaning water to the bowl part 110 is stopped), There is a possibility of a so-called “out of sealed water” state (a state where the upper space of the bowl portion 110 communicates with the sewage pipe WP without passing water).

  However, in the pressure-feed toilet apparatus CS, after most of the sewage is discharged from the storage tank 210, the intake valve 550 is opened to return the interior of the storage tank 210 and the like to atmospheric pressure. Thereby, since the force by inertia and the suction force by a negative pressure do not act simultaneously with respect to sealing water, generation | occurrence | production of sealing water out is suppressed.

  As described above, in the pressure-feed toilet apparatus CS according to the present embodiment, prior to supplying cleaning water to the bowl portion 110, the exhaust pump 560 is driven, and the air in the storage tank 210 is directed toward the sewer pipe WP. Discharge. Further, the water stored in the storage tank 210 is pumped by the impeller 222 to form a jet water flow in the exhaust pipe communication portion 450 of the aspirator 400. With this jet water flow, the air in the storage tank 210 is drawn into the aspirator 400 and discharged toward the sewer pipe WP.

  At this time, air is suppressed from flowing between the space in the bowl portion 110 and the storage tank 210 by the sealed water formed in the trap portion 130. When the air in the storage tank 210 is discharged in this state, the storage tank 210 has a negative pressure.

  Thereafter, the cleaning water is supplied to the bowl portion 110, and the sewage smoothly flows into the storage tank 210 having a negative pressure. For this reason, smooth discharge of the sewage from the toilet body 100 is not hindered by the high air pressure in the storage tank 210, and a part of the filth is prevented from remaining in the bowl part 110. . Further, the pressure-feed toilet apparatus CS does not have a movable part for changing the volume like the air storage unit. For this reason, the bad smell in the storage tank 210 is not leaked to the surroundings by the breakage of the movable part.

  Further, in the pressure-feed toilet apparatus CS, a fixed drain pipe 250 (first pipe section 251 and second pipe pipe) that forms a drain pipe for discharging sewage pumped from the storage tank 210 to the outside (the sewer pipe WP). The highest portion of the portion 252, the third pipe portion 253) and the flexible pipe 254 is the third pipe portion 253. In addition, the height of the third conduit portion 253 is higher than the upper end portion of the discharge port 211. For this reason, the water level in the storage tank 210 can be raised to a height exceeding the upper end of the discharge port 211, and a sufficient amount of water can be stored in the storage tank 210 to form a jet water flow. ing.

  In addition, the height of the third conduit portion 253 is lower than the height of the overflow edge 112 of the toilet body 100. For this reason, for example, even if the water supply valve 520 breaks down and remains in an open state, and the situation in which the wash water continues to be supplied to the bowl portion 110, water may overflow from the bowl portion 110. Absent. That is, the water level in the storage tank 210 exceeds the height of the third pipe line part 253 at a time before the water level of the bowl part 110 overflows and exceeds the height of the edge 112, and falls below the storage tank 210. Water is discharged toward the water pipe WP. As a result, the overflow of water from the bowl part 110 is reliably prevented.

  In addition, the position and shape of the fixed drainage pipe 250 with respect to the toilet body 100 are fixed so that the height of the third pipe section 253 with respect to the overflow edge 112 is always constant and does not change. For this reason, the height of the 3rd pipe line part 253 overflows and becomes higher than the height of the edge 112 by the mistake etc. at the time of construction of the pressure-feed toilet apparatus CS, or the height of the 3rd pipe line part 253 is high. It does not become lower than the connection portion between the fixed drain pipe 250 and the storage tank 210.

  Next, a specific structure of the aspirator 400 will be described with reference to FIG. FIG. 11 is a cross-sectional view showing the structure of the aspirator 400. As described above, the aspirator 400 is a substantially T-shaped tube for connecting the third pipe portion 253 of the fixed drain pipe 250 and the flexible pipe 254, and is an end portion of the third pipe portion 253. Between the first cylindrical portion 410 inserted into the inner side, the second cylindrical portion 420 inserted into the inner side with respect to the end of the flexible pipe 254, and between the first cylindrical portion 410 and the second cylindrical portion 420. And a third cylindrical portion 430 that is formed and forms a pipe line perpendicular to them.

  The first cylindrical portion 410 and the second cylindrical portion 420 are arranged so that their central axes are horizontal, and are arranged so that their central axes are on substantially the same straight line. Further, the flow passage cross-sectional area of the first cylindrical portion 410 on the upstream side is smaller than the flow passage cross-sectional area of the second cylindrical portion 420 on the downstream side.

  With such a configuration, the water that is jetted from the first cylindrical portion 410 to form a jet water flow smoothly flows into the second cylindrical portion 420. As a result, the disturbance of the flow of water (sewage or washing water) in the exhaust pipe communication part 450 is suppressed, and the possibility that water enters the inside of the third cylindrical part 430 and the exhaust pipe 260 is reduced. . The jet water flow jetted from the first cylindrical portion 410 is the water flow shown and described by arrows AW1 and AW3 in FIGS.

  In addition, the inner flow path of the first cylindrical portion 410 is formed with a narrowed portion 411 having a reduced diameter at the downstream end, and the flow passage cross-sectional area of the narrowed portion 411 is the other portion of the first cylindrical portion 410. It is smaller than the channel cross-sectional area. The throttle portion 411 increases the flow rate of water (injected water flow) injected from the first cylindrical portion 410, and can generate a large negative pressure in the exhaust pipe 260 and the storage tank 210. The air flow at this time is the same as that indicated by the arrow AA1 in FIGS.

  In the present embodiment, the control device 500 starts driving the exhaust pump 560 and the rotary motor 530 to make the storage tank 210 have a negative pressure, triggered by the user operating the drain lever 510. However, the timing for setting the storage tank 210 to a negative pressure is not limited to this, and may be any time before the supply of cleaning water to the bowl portion 110 is started.

  For example, the seating sensor or the like may detect that the user is seated on the toilet seat, and the control device 500 may start driving the exhaust pump 560 and the rotary motor 530 based on this. In this case, if the drain lever 510 is not operated for a long time or if the toilet lid 115 is closed (when the user sits but does not defecate), the control device 500 controls the exhaust pump 560 and After stopping the rotary motor 530, it is desirable to open and close the intake valve 550 to return the inside of the storage tank 210 to atmospheric pressure.

  The embodiments of the present invention have been described above 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.

DESCRIPTION OF SYMBOLS 100: Toilet body 110: Bowl part 111: Bowl exit part 112: Overflow edge 115: Toilet lid 120: Discharge flow path 121: Ascending flow path 122: Down flow path 123: Horizontal flow path 130: Trap part 140: Internal flow path 141: Opening part 142: Opening part 200: Processing device 210: Reservoir 211: Discharge port 221: Pulsator 222: Impeller 250: Fixed drain pipe 251: First pipe part 252: Second pipe part 253: Third pipe Road part 254: Flexible pipe 260: Exhaust pipe 300: Washing water supply device 310: Water storage tank 311: Through hole 320: Water supply pipe 330: Opening / closing mechanism 331: Valve element 332: Ball chain 400: Aspirator 410: First cylindrical part 411: Throttle part 420: Second cylinder part 430: Third cylinder part 450: Exhaust pipe communication part 500: Control device 510: Drain lever 52 : Water valve 530: rotating motor 540: a valve body driving section 550: intake valve 560: exhaust pump Bd: Beds CS: pumping toilet device SH: Shaft W: wall WP: sewers

Claims (4)

A sewage is mixed with washing water as sewage, and is a pumping toilet device that discharges by pumping in a state where fluidity is enhanced,
A toilet body having a bowl part for temporarily receiving filth, and a discharge channel connected to the bowl part for discharging washing water supplied to the bowl part together with filth as sewage,
A storage tank for storing the sewage discharged from the toilet body into the interior,
Stirring means for stirring sewage inside the storage tank;
Pumping means for pumping the sewage stirred by the stirring means to the outside of the storage tank;
A drain pipe connected to the storage tank and for discharging the sewage pumped from the storage tank by the pumping means to the outside,
One end is connected to the storage tank at a position different from the drain pipe, and the other end is connected to the drain pipe, thereby connecting the storage tank and the drain pipe,
First shielding means for shielding the discharge flow path so as to suppress air flow from the bowl portion into the storage tank;
An exhaust pump for discharging the air in the storage tank to the drain pipe via the exhaust pipe,
Prior to the sewage discharged from the toilet body flowing into the storage tank, the exhaust pump is driven in a state where the discharge flow path is blocked by the first shielding means, and the storage tank is negatively pressured. A pressure-feed toilet device characterized by   The pressure-fed toilet device according to claim 1, further comprising second shielding means for suppressing air flow from the drain pipe into the storage tank.   The said 2nd shielding means suppresses the distribution | circulation of the air in the communicating part of the said storage tank and the said drain pipe by storing distribution | circulation prevention water in the said storage tank, It is characterized by the above-mentioned. 2. A pressure-fed toilet device according to 2.   Prior to the sewage discharged from the toilet body flowing into the storage tank, the flow prevention water is discharged to the drain pipe by driving the pumping means. The pumping toilet device as described.

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