JP2018178660A - Flush toilet and flush toilet system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a flush toilet and a flush toilet system which has a simple structure and which can detect clogging with stools.SOLUTION: A portable flush toilet capable of being connected with a negative pressure pump of this invention comprises: a bowl including a discharge port; a water pouring passage supplying washing water to the bowl; a valve mechanism connected with the negative pressure pump and discharging the stored water in the bowl from the discharge port; and a control portion controlling opening and closing of the valve mechanism.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a flush toilet and a flush toilet system.

  For people who have difficulty walking and can not go to the bathroom by themselves, they may install a portable toilet in the hospital room of the hospital, nursing home residents or the bedside of the bedroom at home. Then, the user who gets up from the bed can immediately get over to the toilet seat of this portable toilet while being assisted by an assistant or by himself. In such a conventional movable toilet bowl, excrement excreted by the user is generally temporarily stored in a bowl provided detachably on the toilet bowl body, and nurses, carers, etc. excrete excrement from the toilet bowl body. Remove the bowl that has entered. Then, carry the bowl to the toilet and transfer excrement to a toilet flush toilet, etc. After that, after washing the bowl, it is set again to the toilet bowl body.

  By the way, in a hospital or nursing home, since one nurse or carer has to care for a large number of patients and nursing home residents, it takes time to carry out the above-mentioned bowl cleaning work and the like. Absent. However, in the case of a hospital or a nursing home, a room with multiple beds placed in one room, which is called a multi-floor room, is generally used. However, the problem is that the patient and the resident in the same room feel uncomfortable when staying in the room or bedroom.

  Therefore, negative pressure suction-type toilets have been proposed in which the movable toilet bowl is like a flush toilet so that the waste of the bowl can be easily drained and the burden on the nurse or carer can be reduced (for example, , Patent Document 1). This negative pressure suction type toilet opens and closes the toilet body having the discharge port at the bottom, the negative pressure tank connected to the discharge port of the toilet body through the drainage pipeline, and the connection between the negative pressure tank and the toilet body It comprises an on-off valve, a vacuum pump attached to a negative pressure tank, a discharge valve for opening and closing an outlet provided at the bottom of the negative pressure tank, and a control device. Then, the control device is configured to execute step A for operating the vacuum pump to bring the negative pressure tank into a negative pressure state, step B for opening the on-off valve, and step C for opening the discharge valve.

  That is, this negative pressure suction type toilet makes the negative pressure inside the negative pressure tank with a vacuum pump, and then opens the on-off valve provided in the drainage line connecting the toilet body and the negative pressure tank, The excrement in the toilet bowl is aspirated into the tank together with the flush water. Then, when the evacuation of the waste into the negative pressure tank is finished, the on-off valve is closed and the negative pressure tank is returned to the atmospheric pressure. After that, the drainage valve provided at the bottom of the negative pressure tank is opened to drain the waste water including the waste in the negative pressure tank to the waste water mass.

JP, 2015-124546, A

  However, in the case of the negative pressure suction type toilet as described above, once the excrement discharged from the toilet bowl is accommodated in the negative pressure tank, the excrement is discharged from the negative pressure tank. Therefore, there is a problem that the structure of the flush toilet system is complicated. In addition, there was a demand for a simple toilet structure. Furthermore, when the stool is clogged when the stool is discharged, if the flush water is continuously supplied, the flush water may overflow from the toilet bowl.

  The present invention has been made to solve the above problems, and it is an object of the present invention to provide a flush toilet and a flush toilet system which is simple in structure and capable of detecting when a stool is clogged. The purpose is.

  The flush toilet according to the present invention is a flush toilet connectable to a negative pressure pump, and is connected to a bowl having a discharge port, a water injection channel for supplying flush water to the bowl, and the negative pressure pump, the bowl A valve mechanism for discharging the stored water from the discharge port, and a control unit for controlling the opening and closing of the valve mechanism, the valve mechanism having a suction side end and a discharge side end And a valve body for opening and closing the discharge path between the suction side end and the discharge side end, and a discharge path for flowing the dirty water discharged from the discharge port to the negative pressure pump side, and the valve A cylinder unit for housing the body, a biasing means for biasing the valve body so that the discharge passage is in a closed state, and a first train communicating the cylinder unit and the discharge side end of the discharge passage A passage, a first on-off valve provided in the middle of the first communication passage, and the first communication passage A second communication passage communicating between the first on-off valve and the cylinder portion, and between the first on-off valve and the discharge side end, and the second communication passage are provided and opened to the atmospheric pressure Between a branch path having a closed end, a second on-off valve provided in the middle of the branch path, an end on the discharge side end of the second communication path, and the discharge side end A first check valve disposed on the second side and allowing only the flow of air to the discharge side end, and the second communication passage disposed on the cylinder portion side with respect to the branch passage, the cylinder portion side To the discharge side end portion side of the first on-off valve rather than the first on-off valve in the first communication passage, or to the second on-off valve in the second communication passage And a pressure detection unit attached to any one of the discharge side end portions.

  According to this configuration, the valve mechanism can be directly or indirectly connected to the negative pressure pump without providing a toilet tank, so that the structure can be simplified. In addition, since the pressure detection unit is provided, clogging of stool can be detected by monitoring the pressure.

  In the flush toilet, the control unit closes the first on-off valve and the second on-off valve in an initial state, and drives the negative pressure pump when a discharge operation for discharging the waste of the bowl is started. A second step, opening the first on-off valve and reducing the pressure in the cylinder portion to move the valve body against the biasing means, and opening the discharge path; 1) Close the on-off valve, open the second on-off valve, and raise the pressure in the cylinder unit, thereby moving the valve body by the biasing unit and closing the discharge path; A fourth step of stopping the pressure pump may be performed, and a step of supplying flush water to the bowl may further be performed during the discharging operation.

  In each of the flush toilets, when the pressure detected by the pressure detection unit after the first step decreases from an initial value, the control unit detects the pressure detected by the pressure detection unit after the second step. The step of supplying the flush water may be stopped or not performed when it does not rise to the predetermined first reference value.

  In each of the flush toilets, when the pressure detected by the pressure detection unit after the third step drops from an initial value, the control unit detects the pressure detected by the pressure detection unit after the fourth step, When not rising to a predetermined second reference value, the step of supplying the washing water may be stopped or not performed.

  Each of the above flush toilets can be configured to be movable.

  A flush toilet system according to the present invention comprises a negative pressure pump, a dirty water pipe connected to the negative pressure pump, and any flush toilet described above, and a valve mechanism of the flush toilet for the dirty water It is detachably connected to the piping.

  According to the flush toilet and flush toilet system according to the present invention, the structure is simple, and it is possible to detect when the stool is clogged.

It is a figure explaining roughly the flush toilet system concerning the present invention. It is a figure explaining the connection state of piping for sewage and a negative pressure pump of the flush toilet system of FIG. It is sectional drawing of one example of the negative pressure pump used for the flush toilet system of FIG. It is a schematic sectional drawing of the movable toilet of the flush toilet system of FIG. It is a figure which illustrates schematically the valve mechanism part of the movable toilet of FIG. It is a figure explaining the operation | movement of the movable toilet of the flush toilet system of FIG. It is a figure explaining the operation | movement of the movable toilet of the flush toilet system of FIG. It is a figure explaining operation of a valve mechanism. It is a figure explaining operation of a valve mechanism. It is a timing chart of operation of a valve mechanism.

  Hereinafter, an embodiment of a flush toilet system according to the present invention will be described with reference to the drawings. FIG. 1 is a plan view of a living room in which the flush toilet system according to the present embodiment is disposed, FIG. 2 is a diagram for explaining the connection between the piping of the flush toilet system and the negative pressure pump, and FIG. It is sectional drawing of a pump.

  Below, after demonstrating the outline | summary of the living room in the building where the flush toilet system of this embodiment is arrange | positioned, a flush toilet system is demonstrated in detail.

<1. Overview of the room>
As shown in FIG. 1, the living room in which the flush toilet system according to the present embodiment is disposed is formed in a rectangular shape, and a living space 42 and a toilet booth 41 are provided therein. Here, for convenience of explanation, the wall of the upper room 4 in FIG. 1 is the first wall 401, the wall of the lower room 4 is the second wall 402, and the wall of the right room 4 is the third wall 403, left The wall of the living room 4 is referred to as a fourth wall 404. A plurality of living rooms are provided in nursing homes such as nursing homes and condominiums for the elderly, and in buildings such as hospitals.

  A window 44 is provided on the first wall 401 of the living room 4, and a door 45 is provided on the fourth wall 404 side of the second wall 402. In addition, a toilet booth 41 having a rectangular shape in plan view is provided at a corner between the second wall 402 and the third wall 403, and a movable toilet is usually disposed in the toilet booth 41. The negative pressure pump 3 is disposed on the third wall 403 side of the toilet booth 41, and the piping main body 21 connected to the negative pressure pump 3 is embedded in the third wall 403, and along the third wall 403. It extends.

  As shown in FIG. 2, the piping body 21 connected to the negative pressure pump 3 is provided with a first toilet connection port 22 and a second toilet connection port 23. As shown in FIG. 1, the first toilet connection port 22 is disposed in the toilet booth 41 so as to be exposed from the third wall 403, and the second toilet connection port 23 is a third connection in the third wall 403. (1) Exposed near the end on the wall 401 side. The first toilet connection port 22 and the second toilet connection port 23 are opened by connecting the joint of the end of the flexible hose 12a, which will be described later, and the joint is removed. The valve is closed, it has a valve structure. In addition, the toilet bowl connection ports 22 and 23 and the joint part which are the above can be made into the structure which can maintain pressure reduction.

  In addition, a bed 43 is provided in proximity to the window 44, and on the right side of the bed 43, the movable toilet (washing toilet) 1 moved from the toilet booth 41 can be disposed. And in order to be able to arrange this mobile toilet 1, the first wall 401 is provided with the water tap 6 and the power outlet 150, and the third wall 403 is provided with the second toilet connection port 23 described above. Is provided. Therefore, the flush toilet 1 is supplied with flush water from the water faucet 6 through the hose 61, and the cable 15a provided on the flush toilet 1 is connected to the power outlet 150, whereby the flush toilet 1 is provided. It is possible to feed Further, by connecting the flexible hose 12a provided in the movable toilet 1 to the second toilet connection port 23, the stool of the movable toilet 1 can be discharged into the piping main body 21 through the flexible hose 12a. It has become. In addition, the power outlet 150 and the water tap 6 can be similarly disposed in the toilet booth 41 as well.

<2. Flush toilet system>
The flush toilet system according to the present embodiment includes the movable toilet 1, the dirty water pipe 2, and the negative pressure pump 3 described above. These will be described in detail below.

<2-1. Piping and negative pressure pump>
The dirty water pipe 2 is composed of the above-described pipe body 21 and first and second toilet connection ports 22 and 23 connected thereto. As shown in FIGS. 2 and 3, for example, a liquid-sealed vacuum pump can be used as the negative pressure pump 3 and includes a pump body 3 a and a motor 31. The pump body 3 a includes a housing 32 in which a screw rotor 33 and a cutter 34 are rotatably disposed. The screw rotor 33 and the cutter 34 are rotated by a motor 31 adjacent to the housing 32.

  Moreover, the suction side piping 3b and the discharge side piping 3c are provided in the housing. The pipe body 21 described above is connected to the suction side pipe 3b. In addition, the suction side piping 3b is connected to the above-described piping main body 21 while the highest position thereof is higher than the highest position of the housing 32. On the other hand, the discharge side pipe 3 c is connected to the sewage pipe line 5 such as a building drainage vertical pipe, and its highest position is higher than the highest position of the housing 32. Therefore, sealing water is always accumulated in the housing 32. Then, the sewage pipeline 5 is connected to the outdoor sewage mass, and the sewage is discharged to the sewage mass via the sewage piping 5.

  The motor 31 is turned on and off by a control signal from a control device 15 described later. The control signal is sent to the negative pressure pump 3 side wirelessly or via a control signal line provided along the dirty water pipe 2.

  Then, in the negative pressure pump 3, when the screw rotor 33 is rotated by the drive of the motor 31, sealing water accumulated in the housing 32 flows along the inner wall of the housing 32 toward the discharge side piping 3c by centrifugal force, and the suction side is negative. It becomes a pressure state. As a result, the inside of the dirty water pipe 2 is depressurized, and the water and air in the dirty water pipe 2 are discharged to the sewage pipe line 5 via the discharge side pipe 3 c. Further, the cutter 34 rotates together with the screw rotor 33 to crush solid matter flowing into the housing 32 from the dirty water pipe 2 side, thereby preventing clogging in the housing 32.

2-2. Mobile Toilet>
<2-2-1. Outline of Mobile Toilet>
FIG. 4 is a schematic cross-sectional view of a movable toilet, and FIG. 5 is a diagram schematically illustrating a vacuum valve portion of the movable toilet of FIG. As shown in FIG. 4, the movable toilet 1 comprises a toilet body 10, a bowl 11 accommodated in the toilet body, a drainage channel 12 for discharging feces with water from the bowl 11, and flush water in the bowl 11. The water supply channel 14 to supply is provided. Further, the movable toilet 1 includes a valve mechanism (for example, a vacuum valve) 13 provided in the middle of the drainage channel 12, a control device 15 for controlling water injection and drainage, and a remote controller 19 for operating the control device 15. And have. Hereinafter, these members will be described in detail.

  The toilet body 10 includes a body 10a. The body 10a is configured to receive the bowl 11, the drainage channel 12, the water injection channel 14 and the control device 15, and has wheels (not shown) at its lower end. . Further, the body 10a is provided with a toilet seat 10b disposed on the upper surface of the bowl 11, a lid 10c for closing the upper opening of the bowl 11 from the upper surface of the toilet seat 10b, and a handle 10d. The bowl 11 is accommodated in the body 10a, and has a discharge port 11a at its lower part. In addition, as shown in FIG. 6A described later, stored water is stored in advance in the bowl 11 to a predetermined height before use.

  The outlet 11 a has a diameter equal to or slightly smaller than the diameter of the pipe body 21, and one end of the drainage passage 12 is connected. The valve mechanism 13 is integrated in the middle of the drainage path 12, and the part provided outside from the body 10a becomes the flexible hose 12a. And although illustration is abbreviate | omitted, as above-mentioned, the front-end | tip of this flexible hose 12a has a joint structure in which the toilet connection ports 22 and 23 can be attached or detached freely.

2-2-2. Outline of valve mechanism>
FIG. 5 is a schematic explanatory view of a vacuum valve according to the present embodiment. As shown in FIG. 5, the valve mechanism 13 constitutes a part of the drainage channel 12 and includes a body 13 a. The body 13a has a cylinder portion 13h having an internal space, a suction pipe portion 13i communicating with the cylinder portion 13h and constituting a part of the drainage passage 12, and a discharge pipe portion 13j. The suction pipe portion 13i is connected to the discharge port 11a of the bowl 11, and the discharge pipe portion 13j is connected to a reducer 12b which constitutes a part of the drainage channel 12. The large diameter side of the reducer 12b is connected to the discharge port 11a side of the bowl 11, and the small diameter side end penetrates the body 10a and is exposed to the outside, and one end of the flexible hose 12a constituting a part of the drainage passage 12 Are detachably connected.

  The valve body 13b is accommodated in the cylinder portion 13h, and the drainage passage 12 can be opened and closed between the suction pipe portion 13i and the discharge pipe portion 13j by sliding in the cylinder portion 13h. Further, a spring 13k, which is biasing means, is connected to the valve body 13b, and the valve body 13b is always biased in the direction to close the drainage passage 12 by the spring 13k.

  As shown in FIG. 5, the valve mechanism 13 is provided with a first communication pipe (first communication passage) 13r for connecting the upper portion of the cylinder portion 13h and the discharge pipe portion 13j and connecting them. There is. In the middle of the first communication pipe 13r, a first check valve 13s is provided on the discharge pipe portion 13j side, and a first electromagnetic on-off valve (first open / close valve) 13t is provided on the cylinder portion 13h side. It is done. The second check valve 13y allows air to flow only from the cylinder portion 13h side to the discharge pipe portion 13j in the first communication pipe 13r.

  In addition, in the valve mechanism 13, a second communication pipe (a second communication pipe (a second communication valve) that connects between the cylinder portion 13h and the first electromagnetic on-off valve 13t and between the first check valve 13s and the second check valve 13y. Communication path) 13v is provided. A branch pipe 13w is connected to the second communication pipe 13v. A second electromagnetic on-off valve 13x (second on-off valve) is provided in the middle of the branch pipe 13w. The end of the branch pipe 13w is open to the atmosphere. Specifically, the bowl 11 is opened at a position above the water storage of the bowl 11. In the second communication pipe 13v, a second check valve 13y is provided closer to the cylinder portion 13h than the branch pipe 13w. The second check valve 13y allows air to flow only from the discharge pipe portion 13j side to the cylinder portion 13h side in the second communication pipe 13v. Furthermore, in the first communication pipe 13r, a pressure sensor (pressure detection unit) 13u for detecting the pressure in the first communication pipe 13r is provided between the first electromagnetic on-off valve 13t and the first check valve 13s. ing.

2-2-3. Outline of water injection mechanism>
Returning to FIG. 4, the water pouring mechanism of the movable toilet 1 will be described. As shown in FIG. 4 and FIG. 6 described later, a water injection port 14a facing the upper edge of the bowl 11 is provided at one end of the water injection channel 14, and a water supply port 14b is provided at the other end. And between the water injection port 14a and the water supply port 14b, the water injection channel electromagnetic on-off valve 14c is provided.

  The water supply port 14b is exposed to the outside from the body 10a, and is connected to the water faucet 6 respectively provided in the vicinity of the first toilet connection port 22 and the second toilet connection port 23 described above via a hose 61. It has become so.

  The control device 15 is provided in the body 10 a and operates the negative pressure pump 3 by operating the operation button of the remote controller 19. Further, the controller 15 controls opening and closing of the water injection passage solenoid on-off valve 14c, the first solenoid on-off valve 13t, and the second solenoid on-off valve 13x. In particular, as described later, the control device 15 controls the opening and closing of each of the electromagnetic on-off valves 14c, 13t and 13x based on the pressure detected by the pressure sensor 13u. Furthermore, the control device 15 is connected to a cable 15a provided with a plug provided to penetrate the body 10a, and as described above, the power is supplied by connecting the plug of the cable 15a to a power outlet. It is supposed to be.

<3. How to use flush toilet system>
<3-1. Overview of Usage>
Next, the method of use and the operation of the vacuum flush toilet system will be described in detail with reference to FIGS. 6 and 7 are views showing the operation of the movable toilet of the flush toilet system, FIGS. 8 and 9 are views explaining the operation of the vacuum valve, and FIG. 10 is the opening and closing of each solenoid valve etc. of the valve mechanism. Is a timing chart showing

(1) First, as shown in FIG. 1, the movable toilet 1 is moved to the toilet booth 41 at the installation assumed position or to the bedside of the living space 42, and the toilet connection port 22 (provided in the vicinity) 23) Connect the flexible hose 12a connected to the reducer 12b. Furthermore, the hose 61 connected to the water supply pipe 6 is connected to the water tap 6, and the plug of the power cable 15a of the control device 15 is connected to a power outlet (not shown). In this state, as shown in FIG. 6A, the stored water is stored to a predetermined height of the bowl 11. Further, in the initial state shown in FIG. 5, the first electromagnetic on-off valve 13t and the second electromagnetic on-off valve 13x are in the closed state. Then, the pressure sensor 13 u generally detects the atmospheric pressure (initial value).

(2) When the user finishes using the toilet and the user or the assistant presses the switch of the remote controller 19, the water injection passage solenoid on-off valve 14c is opened, and as shown in FIG. 6 (b), the water injection port The washing water for washing is supplied from 14 a into the bowl 11. The remote controller 19 at this time is operated to set the time when the water injection passage solenoid on-off valve 14c is in the open state to zero. Then, after a short time t1 from this, the negative pressure pump 3 operates. At this time, the first solenoid on-off valve 13t and the second solenoid on-off valve 13x are in a closed state. At this time, the pressure detected by the pressure sensor 13 u decreases from atmospheric pressure to negative pressure.

(2) If it is determined in the control unit of the control device 15 that the time t2 has elapsed, the water injection passage on-off valve 14c is closed to stop the supply of flush water. At the same time, the controller 15 opens the first electromagnetic on-off valve 13t in a state in which the second electromagnetic on-off valve 13x is closed. Thereby, since the cylinder part 13h and the negative pressure pump 3 communicate, the air inside the cylinder part 13h is attracted | sucked by the piping 2 side for dirty water through the 1st communicating pipe 13r. At this time, since the second check valve 13y is disposed on the side of the cylinder portion 13h in the second communication pipe 13v, the air of the cylinder portion 13h does not flow to the second communication pipe 13v. Thus, since the pressure in the cylinder portion 13h is reduced, as shown in FIGS. 7A and 8, the valve body 13b is pulled up above the cylinder portion 13h against the biasing force of the spring 13k. Then, by pulling up the valve body 13b, the valve mechanism 13 is opened, and as shown in FIG. 8, the stored water including the dirt in the bowl 11 is sucked to the dirty water piping 2 side.

  At this time, since the first electromagnetic on-off valve 13t is in the open state in the first communication pipe 13r, the pressure detected by the pressure sensor 13u returns from the negative pressure to the atmospheric pressure.

(3) The control unit of the control unit 15 controls the control unit of the control unit 15 when it is determined that the time t3 from the start of drainage to the time when the dirty water is sufficiently sucked to the dirty water pipe 2 has elapsed. In response to the signal, the first electromagnetic on-off valve 13t is closed, and the second electromagnetic on-off valve 13x is opened. Thereby, the air by the atmospheric pressure from the branch pipe 13w flows only to the cylinder portion 13h side. As a result, the inside of the cylinder portion 13h becomes atmospheric pressure through the first communication pipe 13r and the second communication pipe 13v, and as shown in FIGS. 7 (b) and 9, the valve 13b is drained by the biasing force of the spring 13k. Move to close 12. Thus, the suction of the stored water in the bowl 11 to the dirty water piping 2 side is stopped.

  Further, the odor around the movable toilet 1 is sucked into the dirty water pipe 2 through the branch pipe 13w, the second communication pipe 13v, and the first communication pipe 13r by opening the second solenoid on-off valve 13x. . Then, the odor sucked into the dirty water pipe 2 is sucked by the negative pressure pump 3 together with the dirty water in the dirty water pipe 2 and then exhausted together with the dirty water to the sewage pipeline 5.

  At this time, since the first electromagnetic on-off valve 13t is closed again in the first communication pipe 13r, the pressure detected by the pressure sensor 13u is reduced from the atmospheric pressure to the negative pressure by suction by the negative pressure pump 3. Go.

(4) Thereafter, the control unit of the control device 15 opens the water injection passage solenoid on-off valve 14c at time t4 after a slight time from time t3 to supply flush water. That is, the flush water is supplied so as to fill the inside of the bowl 11 drained between times t2 and t3.

(5) Then, when it is determined in the control unit of the control device 15 that the time t5 has elapsed, the negative pressure pump 3 is stopped, and at a time t6 when a small time has elapsed from there, the water injection channel solenoid on-off valve 14c is closed and the supply of flush water is stopped. Thus, when the negative pressure pump 3 stops, the pressure detected by the pressure sensor 13u returns from the negative pressure to the atmospheric pressure. Thereafter, after time t7, the second electromagnetic on-off valve 13x is also closed, and the flow of air and the suction of the odor due to the atmospheric pressure are also stopped.

<3-2. Detection of clogging by pressure sensor>
By the way, as shown in FIG. 10, the pressure sensor 13u detects the negative pressure twice in the periods A and B by opening and closing both the solenoid on-off valves 13t and 13x and suction by the negative pressure pump 3. Then it is back to atmospheric pressure. However, for example, if clogging of stool or the like occurs in the drain pipe portion 13j, the pressure may not return to the atmospheric pressure. Hereinafter, this point will be described.

  First, in the period A of FIG. 10, the stool is clogged around the valve body 13b, and if the stool does not flow from the suction pipe 13i to the discharge pipe 13j, it is detected by the pressure sensor 13u under the influence of the negative pressure pump 3. Pressure does not return from negative pressure to the atmospheric pressure (first reference value). Thereby, clogging of the stool can be detected. Thus, when clogging of the stool is detected, the control unit closes the water injection passage solenoid on-off valve 14c and stops the supply of flush water to the bowl.

  Further, if the stool is clogged between the discharge pipe portion 13j and the negative pressure pump 3 in the period B of FIG. 10, the negative pressure state is maintained even if the negative pressure pump 3 is stopped. The pressure detected does not return from negative pressure to the atmospheric pressure (second reference value). Thereby, clogging of the stool can be detected. Thus, when the clogging of the stool is detected, the control unit closes the water injection passage solenoid on-off valve 14 c and stops the supply of flush water to the bowl 11.

  <3. Feature>

(1) The toilet booth 41 and two places near the bed 43 of the living space 42 are selected as the installation position of the mobile toilet 1 as necessary, and the mobile toilet 1 is used as a flush toilet at each position. can do. That is, by simply pressing the button of the remote controller 19, excrement can be immediately drained to the sewage pipeline 5, and the nurse or carer discards the excrement of the bowl into the flush toilet bowl or the bowl cleaning operation. There is no need to do it, and the burden of nursing and care can be reduced.

(2) The toilet booth 41 and the living space 42 can be selected as the installation position of the movable toilet 1. For example, when it is possible to walk by health or light assistance, the movable toilet 1 is permanently installed in the toilet booth 41 Use the toilet as a normal flush toilet, or become elderly, or when it is difficult to walk with light assistance and it is difficult to move to the toilet booth 41, move the movable toilet 1 to the living space 42 It can be used for bedside.

(3) Since the waste water in the dirty water pipe 2 is discharged to the sewage pipe line 5 and the odor in the bowl 11 and its vicinity is exhausted to the sewage pipe line 5 simultaneously, the offensive odor of the excrement hardly leaks into the room etc. .

(4) Since drainage from the negative pressure pump 3 directly to the sewage pipe line 5 is required, installation of a tank or the like is unnecessary. Moreover, since the negative pressure pump 3 is arrange | positioned in a room, sewage can be discharged using the sewage piping path 5 previously installed in the building.

(5) When drainage is completed, the inside of the sewage pipe 2 is empty, and the negative pressure pump 3 is a liquid-sealed type. The odor on the side as well as the odor in the sewage pipe 2 can be prevented as much as possible from leaking into the room.

(6) Since the negative pressure pump 3 is provided with the cutter 34, the solid matter is crushed by the cutter 34, and clogging and the like in the negative pressure pump 3 can be prevented.

(7) The water in the bowl 11 is exhausted by the time t2 when the drainage is stopped, and the air is not sucked from the discharge port 11a. Therefore, the drainage noise of the bowl 11 can be prevented as much as possible. .

(8) Since the number of solenoid on-off valves is two, cost can be reduced and control is facilitated. Moreover, while being able to make the inside of cylinder part 13h into atmospheric pressure only with branch pipe 13w, suction of an odor also becomes possible. Therefore, the number of branch pipes can also be reduced. In addition, the position which arrange | positions the edge part of the branch pipe 13w is not specifically limited, It will open | release to air | atmosphere and will not be specifically limited, if the odor which generate | occur | produces with the movable toilet 1 can be attracted | sucked. Therefore, as in the first embodiment, the bowl 11 can be disposed at a position facing the bowl 11 or in the vicinity of the valve mechanism 13.

(9) Since the pressure detection unit is provided, it is possible to detect clogging of stool as described above. Therefore, it is possible to control the water supply channel solenoid on-off valve 14c after detection to stop the supply of flush water or not to perform the flush water supply. Thereby, although the stool is clogged, flush water is supplied to the bowl, and it is possible to prevent the bowl from overflowing with flush water.

<4. Modified example>
As mentioned above, although one Embodiment of this invention was described, this invention is not limited to the said embodiment, A various change is possible unless it deviates from the meaning. Hereinafter, modified examples will be described. However, the following modifications can be combined as appropriate.

<4-1>
The position at which the pressure sensor 13u is provided is not particularly limited, and the first communication pipe 13r is connected between the first solenoid on-off valve 13t and the discharge pipe portion 13j or the first communication with the branch pipe 13w in the second communication pipe 13v. It may be at any position between the tube 13r.

<4-2>
In the said embodiment, the negative pressure pump 3 is arrange | positioned in the living room 4 (the inside of a wall is included), and the negative pressure pump 3 is connected to the sewage piping 5 such as a building drainage vertical pipe. However, the negative pressure pump 3 can be arranged inside a building other than the living room 4 or outside the building. And this negative pressure pump 3 can be connected to the sewage piping line 5. In addition, mobile toilets 1 of a plurality of living rooms 4 can be connected to one negative pressure pump 3.

<4-3>
In the above embodiments, drainage and water injection are performed by opening and closing the solenoid on-off valve, but a motorized valve, a hydraulic valve, an air valve, or the like may be used.

<4-4>
The timing of driving of the negative pressure pump 3, opening and closing of the first electromagnetic on-off valve 13t, and opening and closing of the second electromagnetic on-off valve 13x in the above embodiment is an example, and even if they are slightly back and forth, (1) Valve The body 13b is moved to open the drainage passage 12 and flow the stool to the negative pressure pump 3 side, and (2) the valve body 13b is moved to close the drainage passage 12. Further, the timing of water injection is not particularly limited as long as flush water can be supplied to the bowl 11 so as to urge flushing of the stool or prevent overflow.

<4-5>
In the above-described embodiments, when the pressure detected by the pressure sensor 13 u does not return to the atmospheric pressure from the negative pressure, water injection is stopped, but the reference pressure is not limited to this. That is, there is no clogging if it exceeds the predetermined reference value (the first reference value and the second reference value) even if it does not return to the atmospheric pressure after decreasing from the predetermined initial value to a negative pressure below the predetermined value. It can also be judged. Further, in the above periods A and B, the reference values (the first reference value and the second reference value) for judging that there is no clogging may be the same or different. Also, the initial value may not be atmospheric pressure.

<4-6>
The negative pressure pump is not particularly limited, and may not be as shown in FIGS. 2 and 3. That is, it is not particularly limited as long as the waste water can be suctioned.

<4-7>
In the above embodiment, the toilet body is configured to be movable, but it may not necessarily be movable or may be fixed.

REFERENCE SIGNS LIST 1 mobile toilet 11 bowl 11 a discharge port 12 discharge path 13 valve mechanism 13 b valve body 13 h cylinder portion 13 k spring 14 water injection passage 15 control device 2 dirty water pipe 3 negative pressure pump

Claims (6)

A flush toilet connectable to a negative pressure pump,
A bowl with an outlet,
A pouring channel for supplying flush water to the bowl;
A valve mechanism connected to the negative pressure pump for discharging the stored water stored in the bowl from the outlet;
A control unit that controls the opening and closing of the valve mechanism;
Equipped with
The valve mechanism
A discharge path having a suction side end and a discharge side end, and flowing the waste water discharged from the discharge port to the negative pressure pump side;
A valve body for opening and closing the discharge path between the suction side end and the discharge side end;
A cylinder unit for accommodating the valve body;
Biasing means for biasing the valve body such that the discharge passage is in a closed state;
A first communication passage connecting the cylinder portion and the discharge side end of the discharge passage;
A first on-off valve provided in the middle of the first communication passage;
In the first communication passage, a second communication passage communicating between the first on-off valve and the cylinder portion and between the first on-off valve and the discharge side end portion;
A branch provided in the second communication passage and having an end opened to atmospheric pressure;
A second on-off valve provided in the middle of the branch path;
A first check valve disposed between the end on the discharge side end of the second communication passage and the discharge side, and allowing only the flow of air to the discharge side ,
A second check valve disposed on the cylinder portion side with respect to the branch passage in the second communication passage, and allowing only the flow of air to the cylinder portion side;
A pressure detection unit attached to either the discharge side end portion side of the first on-off valve in the first communication passage or the discharge side end portion side of the second on-off valve in the second communication passage When,
Equipped with a flush toilet. The control unit
In an initial state, the first on-off valve and the second on-off valve are closed,
When the discharge operation for discharging the filth of the bowl is started,
A first step of driving the negative pressure pump;
A second step of opening the first open / close valve and reducing the pressure of the cylinder portion to move the valve body against the biasing means and opening the discharge path;
A third step of moving the valve body by the biasing unit and closing the discharge passage by closing the first on-off valve and opening the second on-off valve to raise the pressure of the cylinder unit;
A fourth step of stopping the negative pressure pump;
As well as
The flush toilet according to claim 1, further comprising the step of supplying flush water to the bowl during the discharging operation. The control unit
After the first step, when the pressure detected by the pressure detection unit decreases from an initial value,
The water washing according to claim 2, wherein the step of supplying the washing water is stopped or not performed when the pressure detected by the pressure detecting unit does not rise to a predetermined first reference value after the second step. toilet. The control unit
After the third step, when the pressure detected by the pressure detection unit decreases from the initial value,
The method according to claim 2 or 3, wherein after the fourth step, when the pressure detected by the pressure detection unit does not rise to a predetermined second reference value, the step of supplying the flush water is stopped or not performed. Flush toilets.   The flush toilet according to any one of claims 1 to 4, which is configured to be movable. Negative pressure pump,
Sewage piping connected to the negative pressure pump,
The flush toilet according to any one of claims 1 to 5.
And the valve mechanism of the flush toilet is detachably connected to the dirty water pipe.