JP2019027113A - Flush toilet and flush toilet system - Google Patents

Abstract

To provide a flush toilet and a flush toilet system capable of deodorizing with a simple structure.SOLUTION: A movable flush toilet related to the present invention can be connected to a negative pressure pump, and comprises: a bowl having a discharge port; a water pouring passage feeding washing water to the bowl; a valve mechanism connected to the negative pressure pump and discharging water stored in the bowl from the discharge port; and a control part controlling opening/closing of the valve mechanism.SELECTED DRAWING: Figure 5

Description

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

  For those who have difficulty walking and cannot go to the toilet on their own, mobile toilets (portable toilets) may be installed in hospital beds, nursing home residents' bedrooms, or bedsides in home bedrooms. A user who gets up from the bed can immediately transfer to the toilet seat of the portable toilet while being assisted by the person himself / herself. In such a conventional mobile toilet, generally, the excrement excreted by the user is temporarily stored in a bowl provided detachably on the toilet body, and a nurse or a caregiver removes the excrement from the toilet body. Remove the bowl. Then, carry this bowl to the toilet and transfer the excrement to a flush toilet in the toilet. Then, after washing the bowl, it is set on the toilet bowl again.

  By the way, in hospitals and care facilities, a single nurse or caregiver has to care for a large number of patients and care facility residents. Absent. However, in hospitals and nursing homes, etc., a room with multiple beds in one room called a multi-bed room is common. However, there is a problem that the patient or resident in the room becomes uncomfortable because he / she stays in the hospital room or bedroom.

  Therefore, a negative pressure suction toilet has been proposed in which the mobile toilet is like a flush toilet so that the waste from the bowl can be easily discharged to reduce the burden on the nurse or caregiver (for example, Patent Document 1). This negative pressure suction toilet has a toilet body having a discharge port at the bottom, a negative pressure tank connected to the discharge port of the toilet body through a drain line, and opens and closes a connection between the negative pressure tank and the toilet body. An opening / closing valve, a vacuum pump attached to the negative pressure tank, a discharge valve for opening / closing a discharge port provided at the bottom of the negative pressure tank, and a control device are provided. And a control apparatus is comprised so that a vacuum pump may be operated and Step A which makes a negative pressure tank a negative pressure state, Step B which opens an on-off valve, and Step C which opens a discharge valve may be performed.

  In other words, the negative pressure suction toilet uses a vacuum pump to place the negative pressure tank in a negative pressure state, and then opens the on-off valve provided in the drain line connecting the toilet body and the negative pressure tank. The waste in the toilet bowl is sucked into the tank together with flushing water. When the excretion of the excrement into the negative pressure tank ends, the on-off valve is closed and the inside of the negative pressure tank is returned to atmospheric pressure. After that, the drain valve provided at the bottom of the negative pressure tank is opened to drain the sewage containing waste in the negative pressure tank to the sewage mass.

Japanese Patent Laying-Open No. 2015-124546

  By the way, in the negative pressure suction type toilet as described above, it is necessary to provide a deodorizing mechanism such as a fan in order to perform deodorization. However, if a fan or the like is provided, the cost may increase or the control may become complicated.

  The present invention has been made to solve the above-described problems, and an object thereof is to provide a flush toilet and a flush toilet system that can perform deodorization with a simple configuration.

  The flush toilet according to the present invention is a flush toilet that can be connected to a negative pressure pump, and is connected to a bowl having a discharge port, a water supply passage for supplying flush water to the bowl, and the negative pressure pump. A valve mechanism for discharging the stored water from the discharge port, and a controller for controlling opening and closing of the valve mechanism, the valve mechanism having a suction side end and a discharge side end. A discharge passage for flowing sewage discharged from the discharge port to the negative pressure pump side, a valve body for opening and closing the discharge passage between the suction side end and the discharge side end, and the valve A cylinder portion that houses the body, a biasing means that biases the valve body so that the discharge passage is closed, and a first communication that connects the cylinder portion and the discharge-side end portion 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 Connected to the second communication path between the first on-off valve and the cylinder part, and between the first on-off valve and the discharge side end part, and connected to the second communication path and opened to atmospheric pressure. A branch path having a formed 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 In the first check valve that allows only the air flow to the discharge side end side, and in the second communication path, is arranged closer to the cylinder part than the branch path, and the cylinder part side A second check valve that allows only air flow to the control unit, and the control unit closes the first on-off valve and the second on-off valve in an initial state based on a predetermined operation, and A first step of driving the pressure pump; and a second step of opening the second on-off valve and sucking odor through the branch passage. Tsu and up, to the execution.

  According to this configuration, since the valve mechanism can be directly or indirectly connected to the negative pressure pump without providing a toilet tank, the structure can be simplified. In addition, since the end of the branch pipe is arranged to be opened to the atmospheric pressure, when the negative pressure pump is driven and the second on-off valve is opened by the first and second steps, the branch pipe Air can be sucked from the end. Therefore, for example, if the end of the branch pipe is disposed in the vicinity of the bowl, the odor in the vicinity of the bowl can be sucked. Therefore, deodorization can be performed with a simple configuration without providing a deodorizing fan or the like. Moreover, since the edge part of the branch pipe is arrange | positioned in the vicinity of a bowl and deodorizing is performed, effective deodorizing can be performed, without worrying about the area of a living room. Any of the first and second steps may be performed first. Further, the end of the branch pipe can be arranged other than in the vicinity of the bowl, whereby the odor in the vicinity of the arranged part can be sucked.

  The flush toilet may further include a step of stopping the negative pressure pump after a predetermined time has elapsed from the first or second step. Thereby, deodorization can be stopped automatically and it can prevent the user forgetting to stop deodorization.

  In the flush toilet, the deodorizing operation can be performed separately from the stool discharge, or the deodorizing operation and the stool discharging operation can be performed continuously. That is, the control unit closes the second on-off valve, opens the first on-off valve, and lowers the pressure of the cylinder unit after a predetermined time has elapsed from the second step, thereby attaching the valve body to the attachment. A third step of opening the discharge path, closing the first on-off valve, opening the second on-off valve, and increasing the pressure of the cylinder portion, The valve body is moved by means to perform a fourth step of closing the discharge passage and a fifth step of stopping the negative pressure pump, and flush water is supplied to the bowl during the discharge operation. Steps can be further performed.

  In each of the flush toilets, either the discharge-side end portion side of the first open / close valve in the first communication passage or the discharge-side end portion side of the second open / close valve in the second communication passage. A pressure detection unit attached to can be further provided.

  According to this configuration, since the pressure detection unit is provided, it is possible to detect clogging of stool by monitoring the pressure.

  Each said flush toilet is good also as an installation type | mold, and can be comprised so that a movement is possible.

  A flush toilet system according to the present invention includes a negative pressure pump, a sewage pipe connected to the negative pressure pump, and any of the flush toilets described above, and a valve mechanism of the flush toilet is used for the sewage It is detachably connected to the pipe.

  According to the flush toilet and flush toilet system according to the present invention, deodorization can be performed with a simple configuration.

It is a figure explaining roughly the flush toilet system concerning the present invention. It is a figure explaining the connection state of sewage piping and the 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 mobile toilet of the flush toilet system of FIG. It is a figure which illustrates schematically the valve mechanism part of the mobile toilet of FIG. It is a figure explaining operation | movement of the mobile toilet in the flush toilet system of FIG. It is a figure explaining operation | movement of a valve mechanism. It is a figure explaining operation | movement of the mobile toilet in the flush toilet system of FIG. It is a figure explaining operation | movement of the mobile toilet in the flush toilet system of FIG. It is a figure explaining operation | movement of a valve mechanism. It is a figure explaining operation | movement of the mobile toilet in the flush toilet system of FIG. It is a figure explaining operation | movement of a valve mechanism. It is a figure explaining operation | movement of the mobile toilet in the flush toilet system of FIG. 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 a flush toilet system according to the present embodiment is arranged, FIG. 2 is a diagram for explaining a connection state between piping of the flush toilet system and a negative pressure pump, and FIG. 3 is a negative pressure. It is sectional drawing of a pump.

  Below, after explaining the outline of the living room in the building where the flush toilet system of this embodiment is arranged, the flush toilet system will be described in detail.

<1. Outline of the room>
As shown in FIG. 1, the living room in which the flush toilet system according to this embodiment is arranged 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, the wall of the right room 4 is the third wall 403, and the left side. The wall of the living room 4 will be 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 buildings such as hospitals.

  A window 44 is provided in 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. 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 mobile toilet is usually disposed in the toilet booth 41. The negative pressure pump 3 is arranged on the third wall 403 side in the toilet booth 41, and the pipe main body 21 connected to the negative pressure pump 3 is embedded in the third wall 403 along the third wall 403. It extends.

  As shown in FIG. 2, the pipe 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 connected to the third wall 403 in the third wall 403. It is exposed in the vicinity of the end on the wall 401 side. The first toilet connection port 22 and the second toilet connection port 23 are connected to the joint portion at the end of the flexible hose 12a, which will be described later, so that the valve is opened and the joint portion is removed. It has a valve structure that closes the valve. In addition, the toilet connecting ports 22 and 23 and the joint part as described above can have a structure capable of maintaining a reduced pressure.

  Further, a bed 43 is provided in the vicinity of the window 44, and the movable toilet (flush toilet) 1 moved from the toilet booth 41 can be arranged on the right side of the bed 43. And in order to be able to arrange this mobile toilet 1, the faucet 6 and the power outlet 150 are provided in the 1st wall 401, and the 2nd toilet port 23 mentioned above is provided in the 3rd wall 403. Is provided. Therefore, flush water is supplied from the faucet 6 to the mobile toilet 1 via the hose 61, and the cable 15a provided in the mobile toilet 1 is connected to the power outlet 150, so that the mobile toilet 1 Can be powered. Moreover, the flexible hose 12a provided in the mobile toilet 1 is connected to the second toilet connection port 23 so that the toilet of the mobile toilet 1 can be discharged into the pipe body 21 via the flexible hose 12a. It has become. Similarly, a power outlet 150 and a water tap 6 can be arranged in the toilet booth 41 as well.

<2. Flush toilet system>
The flush toilet system according to the present embodiment includes the above-described mobile toilet 1, the sewage pipe 2, and the negative pressure pump 3. Hereinafter, these will be described in detail.

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

  The housing is provided with a suction side pipe 3b and a discharge side pipe 3c. The pipe main body 21 described above is connected to the suction side pipe 3b. In addition, the highest position of the suction side pipe 3 b is higher than the highest position of the housing 32, and is connected to the pipe main body 21 described above. 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, the sealed water is always accumulated in the housing 32. The sewage piping 5 is connected to an outdoor sewage mass, and the sewage is discharged to the sewage mass via the sewage piping 5.

  The motor 31 is turned on / off by a control signal from the control device 15 described later. In addition, the control signal is sent to the negative pressure pump 3 side by wire or via a control signal line provided along the sewage pipe 2.

  In the negative pressure pump 3, when the screw rotor 33 is rotated by driving the motor 31, the sealed water accumulated in the housing 32 flows to the discharge side pipe 3 c side along the inner wall of the housing 32 by the centrifugal force, and the suction side is negative. Pressure state. Thereby, the inside of the sewage pipe 2 is depressurized, and the water and air in the sewage pipe 2 are discharged to the sewage pipe line 5 through the discharge side pipe 3c. Further, the cutter 34 rotates together with the screw rotor 33 to pulverize the solid matter flowing into the housing 32 from the sewage pipe 2 side, thereby preventing clogging in the housing 32.

<2-2. Mobile toilet>
<2-2-1. Overview of mobile toilet>
4 is a schematic cross-sectional view of the mobile toilet, and FIG. 5 is a diagram schematically illustrating a vacuum valve portion of the mobile toilet of FIG. As shown in FIG. 4, the mobile toilet 1 includes a toilet main body 10, a bowl 11 accommodated in the toilet main body, a drainage passage 12 for discharging feces together with water from the bowl 11, and flush water in the bowl 11. A water supply channel 14 to be supplied. Further, the mobile 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 that controls water injection and drainage, and a remote controller 19 that operates the control device 15. And. Hereinafter, these members will be described in detail.

  The toilet body 10 includes a body 10a. The body 10a is configured to accommodate the bowl 11, the drainage channel 12, the water injection channel 14, and the control device 15, and includes a wheel (not shown) at the lower end. . The body 10a includes 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 is provided with a discharge port 11a in the lower part thereof. In addition, as shown in FIG. 6A, which will be described later, water is stored in the bowl 11 in advance to a predetermined height before use.

  The discharge port 11a has a diameter that is the same as or slightly smaller than the diameter of the pipe body 21, and one end of the drainage channel 12 is connected to the discharge port 11a. In the drainage channel 12, a valve mechanism 13 is incorporated in the middle, and a portion provided outside from the body 10a is a flexible hose 12a. And although illustration is abbreviate | omitted, the front-end | tip of this flexible hose 12a becomes a joint structure which can be attached or detached to the toilet bowl connection ports 22 and 23 as mentioned above.

  Further, although not shown, the controller 19 is provided with a “deodorizing button” and a “flow button” for draining. The operation of the toilet using these buttons will be described later.

<2-2-2. Overview of valve mechanism>
FIG. 5 is a schematic explanatory diagram 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 13a. The body 13a includes a cylinder part 13h having an internal space, a suction pipe part 13i that communicates with the cylinder part 13h and forms a part of the drainage channel 12, and a discharge pipe part 13j. The suction pipe part 13i is connected to the discharge port 11a of the bowl 11, and the reducer 12b which comprises a part of the drainage channel 12 is connected to the discharge pipe part 13j. The reducer 12b has a large diameter side connected to the outlet 11a side of the bowl 11, a small diameter side end passing through the body 10a and exposed to the outside, and one end of a flexible hose 12a constituting a part of the drainage channel 12 Are detachably connected.

  A valve body 13b is accommodated in the cylinder part 13h, and the drainage channel 12 can be opened and closed between the suction pipe part 13i and the discharge pipe part 13j by sliding in the cylinder part 13h. The valve body 13b is connected to a spring 13k which is an urging means, and the valve body 13b is always urged in the direction to close the drain passage 12 by the spring 13k.

  As shown in FIG. 5, the valve mechanism 13 is provided with a first communication pipe (first communication path) 13r for connecting the upper part of the cylinder part 13h and the discharge pipe part 13j and communicating them. Yes. In the middle of the first communication pipe 13r, a first check valve 13s is provided on the discharge pipe part 13j side, and a first electromagnetic on-off valve (first on-off valve) 13t is provided on the cylinder part 13h side. It has been. The second check valve 13y allows air to flow through the first communication pipe 13r only from the cylinder part 13h side to the discharge pipe part 13j.

  Further, the valve mechanism 13 has a second communication pipe (second pipe) connecting the cylinder portion 13h and the first electromagnetic on-off valve 13t and connecting the first check valve 13s and the second check valve 13y. (Communication passage) 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 this branch pipe 13w is open to the atmosphere. Specifically, it is opened in the bowl 11 at a position above the water storage in the bowl 11. In the second communication pipe 13v, a second check valve 13y is provided on the cylinder portion 13h side with respect to the branch pipe 13w. The second check valve 13y allows air to flow through the second communication pipe 13v only from the discharge pipe part 13j side to the cylinder part 13h side. Further, in the first communication pipe 13r, a pressure sensor (pressure detector) 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. Overview of water injection mechanism>
Returning to FIG. 4, the water injection mechanism of the mobile toilet 1 will be described. As shown in FIG. 4 and FIG. 6 described later, one end of the water injection passage 14 is provided with a water injection port 14a facing the upper edge of the bowl 11, and the other end is provided with a water supply port 14b. A water injection path electromagnetic opening / closing valve 14c is provided between the water injection port 14a and the water supply port 14b.

  The water supply port 14b is exposed to the outside from the body 10a, and is connected to a water supply tap 6 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 10a, and drives the negative pressure pump 3 by operating an operation button of the remote controller 19. Further, the controller 15 controls the opening and closing of the water injection path electromagnetic on-off valve 14c, the first electromagnetic on-off valve 13t, and the second electromagnetic on-off valve 13x. In particular, as will be described later, the control device 15 controls the opening and closing of the electromagnetic on-off valves 14c, 13t, and 13x based on the pressure detected by the pressure sensor 13u. Further, the control device 15 is connected to a cable 15a having a plug provided so as to penetrate the body 10a. As described above, power is supplied by connecting the plug of the cable 15a to a power outlet. It is like that.

<3. How to use flush toilet system>
<3-1. Overview of usage>
Next, the usage method and operation | movement of this vacuum flush toilet system are demonstrated in detail, also referring FIGS. 6, 8, 9, 11, and 13 are diagrams illustrating the operation of the mobile toilet, and FIGS. 7, 10, and 12 are diagrams illustrating the operation of the vacuum valve. 14 is a timing chart showing opening and closing of each electromagnetic valve and the like of the valve mechanism.

(1) First, as shown in FIG. 1, the mobile toilet 1 is moved to the toilet booth 41, which is the assumed installation position, or to the bedside of the living space 42, and the toilet connection port 22 ( 23) Connect the flexible hose 12a connected to the reducer 12b. Further, a hose 61 connected to the water injection channel 14 is connected to the water tap 6, and a plug of the power cable 15 a of the control device 15 is connected to a power outlet (not shown). In this state, the water is stored up to a predetermined height of the bowl 11 as shown in FIG. In the initial state shown in FIG. 5, the first electromagnetic on-off valve 13t and the second electromagnetic on-off valve 13x are closed. The pressure sensor 13u detects the atmospheric pressure (initial value) in general.

(2) When the user finishes the stool and the user or an assistant pushes the “deodorizing button” of the remote controller 19, the negative pressure pump 3 is activated and, as shown in FIG. Only the second electromagnetic on-off valve 13x is opened while the valve 13t is closed. As a result, as shown in FIG. 8, air flows in from the end of the branch pipe 13 w opened in the bowl 11 by suction by the negative pressure pump 3. This air contains odors from the toilet and is sucked into the negative pressure pump 3 through the branch pipe 13w, the second communication pipe 13v, the first communication pipe 13r, and the discharge pipe portion 13j. This deodorizing operation is stopped after a predetermined time. That is, the control unit of the control device 15 closes the second electromagnetic on-off valve 13x and stops the negative pressure pump 3 after a predetermined time has elapsed since the deodorization button was pressed.

(3) Next, when the “flow button” of the remote controller 19 is pressed, the water injection path electromagnetic opening / closing valve 14c is opened, and as shown in FIG. 9, the washing water for washing enters the bowl 11 from the water injection port 14a. Supplied. The “flow button” at this time is operated, and the time when the water injection solenoid valve 14c is opened is set to zero. Hereinafter, description will be made with reference to the timing chart of FIG. Then, after a short time t1, the negative pressure pump 3 operates. At this time, the first electromagnetic on-off valve 13t and the second electromagnetic on-off valve 13x are closed. At this time, the pressure detected by the pressure sensor 13u decreases from atmospheric pressure to negative pressure.

(4) When the control unit 15 determines that the time t2 has elapsed, the water injection channel electromagnetic on-off valve 14c is closed and the supply of flush water is stopped. At the same time, the control device 15 opens the first electromagnetic on-off valve 13t with the second electromagnetic on-off valve 13x closed. Thereby, since the cylinder part 13h and the negative pressure pump 3 communicate, the air inside the cylinder part 13h is sucked to the sewage pipe 2 side through the first communication pipe 13r. At this time, since the second check valve 13y is arranged on the cylinder part 13h side in the second communication pipe 13v, the air in the cylinder part 13h does not flow to the second communication pipe 13v. Thus, since the pressure inside the cylinder portion 13h is reduced, the valve body 13b is pulled up above the cylinder portion 13h against the urging force of the spring 13k as shown in FIG. Then, by pulling up the valve body 13b, the valve mechanism 13 is opened, and the water containing the filth in the bowl 11 is sucked into the sewage pipe 2 side as shown in FIG.

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

(5) When it is determined in the control unit of the control device 15 that the time t3 from when the drainage starts until the sewage is sufficiently sucked into the sewage pipe 2 side, the control from the control unit of the control device 15 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 to the cylinder part 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 the valve body 13b moves so as to close the drainage channel 12 by the biasing force of the spring 13k as shown in FIG. . Thus, the suction of the stored water in the bowl 11 to the sewage pipe 2 side is stopped.

  Further, as shown in FIG. 13, by opening the second electromagnetic on-off valve 13x, the odor around the mobile toilet 1 passes through the branch pipe 13w, the second communication pipe 13v, and the first communication pipe 13r and is used for sewage. It is sucked into the pipe 2. The odor sucked into the sewage pipe 2 is sucked into the negative pressure pump 3 together with the sewage in the sewage pipe 2 and then exhausted to the sewage pipe line 5 together with the sewage.

  At this time, since the first electromagnetic open / close valve 13t is closed again, the pressure detected by the pressure sensor 13u is reduced from the atmospheric pressure to the negative pressure by the suction by the negative pressure pump 3. Go.

(6) Thereafter, in the control unit 15 of the control device 15, at a time t4 after a lapse of a short time from the time t3, the water injection path electromagnetic opening / closing valve 14c is opened, and flush water is supplied. That is, the flush water is supplied so as to fill the bowl 11 drained during the time t2 to t3.

(7) When the controller 15 of the control device 15 determines that the time t5 has elapsed, the negative pressure pump 3 is stopped, and at the time t6 when a slight amount of time has elapsed, the water injection electromagnetic switching 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 negative pressure to atmospheric pressure. Thereafter, after time t7, the second electromagnetic on-off valve 13x is also closed, and the air flow and odor suction due to atmospheric pressure are also stopped.

  Deodorization can be performed at any time, and after the stool as described above, after the stool is discharged, the deodorization can be performed again by pressing the deodorization button.

<3-2. Detection of clogging by pressure sensor>
By the way, as shown in FIG. 14, the pressure sensor 13 u detects negative pressure over two periods A and B by opening and closing both the electromagnetic on-off valves 13 t and 13 x and suction by the negative pressure pump 3. After that, it has returned to atmospheric pressure. However, for example, when clogging of stool or the like occurs in the discharge pipe portion 13j, the pressure may not return to atmospheric pressure. Hereinafter, this point will be described.

  First, during the period A in FIG. 14, when the stool is clogged around the valve body 13 b and the stool does not flow from the suction pipe part 13 i to the discharge pipe part 13 j, the pressure sensor 13 u detects it. Pressure does not return from negative pressure to atmospheric pressure (first reference value). Thereby, clogging of stool can be detected. Thus, when the clogging of the stool is detected, the control unit closes the water injection path electromagnetic opening / closing valve 14c and stops supplying flush water to the bowl.

  In the period B shown in FIG. 14, if the stool is clogged between the discharge pipe 13j and the negative pressure pump 3, the negative pressure state is maintained even when the negative pressure pump 3 is stopped. The detected pressure does not return from negative pressure to atmospheric pressure (second reference value). Thereby, clogging of stool can be detected. Thus, when the clogging of the stool is detected, the control unit closes the water injection path electromagnetic opening / closing valve 14c and stops supplying flush water to the bowl 11.

  <3. Features>

(1) As the installation position of the mobile toilet 1, two places near the toilet booth 41 and the bed 43 of the living space 42 are selected as necessary, and the mobile toilet 1 is used as a flush toilet at each position. can do. In other words, the excrement can be immediately discharged to the sewage pipe line 5 simply by pressing the button of the remote controller 19, and the nurse or caregiver can dispose of the excrement in the bowl into the flush toilet or the bowl cleaning operation. There is no need to do so, and the burden of nursing and nursing care can be reduced.

(2) Two locations of the toilet booth 41 and the living space 42 can be selected as the installation position of the mobile toilet 1. For example, when the mobile toilet 1 can be walked with normal or light assistance, the mobile toilet 1 is permanently installed in the toilet booth 41. When the toilet is used as a normal flush toilet and becomes aged, or when it is difficult to walk to the toilet booth 41 due to light assistance, the mobile toilet 1 is moved to the living space 42. You can make a stool at the bedside.

(3) Since the sewage in the sewage pipe 2 is discharged to the sewage pipe line 5 and the odor in and around the bowl 11 is exhausted to the sewage pipe line 5, the odor of excrement is less likely to leak into the room. .

(4) Since drainage is performed directly from the negative pressure pump 3 to the sewage piping 5, installation of a tank or the like is unnecessary. Moreover, since the negative pressure pump 3 is arrange | positioned in a living room, sewage can be discharged | emitted using the sewer piping 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 liquid-sealed. Therefore, when the mobile toilet 1 is changed, the sewage pipe line 5 It is possible to prevent the odor in the sewage pipe 2 from leaking into the room as much as possible as well as the side odor.

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

(7) By the time t2 when the drainage is stopped, the water in the bowl 11 is emptied so that the air is not sucked from the discharge port 11a, so that the drainage noise of the bowl 11 can be prevented as much as possible. .

(8) Since the number of electromagnetic on-off valves is two, the cost can be reduced and the control becomes easy. Further, only the branch pipe 13w can make the inside of the cylinder portion 13h atmospheric pressure, and odor can be sucked. Therefore, the number of branch pipes can be reduced. In addition, the position which arrange | positions the edge part of the branch pipe 13w is not specifically limited, If it is open | released to air | atmosphere and the odor which generate | occur | produces in the mobile toilet 1 will be sucked, it will not specifically limit. Therefore, it can be arranged at a position facing the bowl 11 as in the first embodiment, or may be 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 injection path electromagnetic opening / closing valve 14c after the detection to stop the supply of the flush water or not to supply the flush water. Thereby, although the stool is clogged, flush water is supplied to the bowl, and the bowl can be prevented from overflowing with flush water.

(10) Since the controller 19 is provided with a deodorization button, deodorization can be performed at any time. In particular, in this embodiment, since the end of the branch pipe 13w is disposed in the vicinity of the bowl 11, when the second electromagnetic on-off valve 13x is opened while driving the negative pressure pump 3, the branch pipe 13w The odor around the bowl 11 can be sucked. Therefore, the branch pipe 13w according to the present embodiment serves to close the valve body 13b by sucking air and also serves to suck odor. That is, deodorization is possible with a simple configuration without separately providing a fan for sucking odors. Moreover, since the deodorizing mechanism is provided in the bowl 11, effective deodorization can be performed without worrying about the size of the living room.

<4. Modification>
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>
In the above embodiment, deodorization is performed by pressing the deodorization button, and then the feces are discharged by pressing the flow button.For example, when the flow button is pressed, before the feces are discharged, Deodorization can also be performed. That is, when the flow button is pressed, the control device 15 may perform the operation of FIG. 7 and FIG. 8 described above and then the operation of FIG. 9 to FIG. In this case, when ending the first deodorization, the negative pressure pump 3 may be driven without stopping, and only the second electromagnetic on-off valve 13x may be closed. Thereafter, the first electromagnetic on-off valve 13t is opened to discharge the stool.

<4-2>
The timing of driving and stopping the negative pressure pump 3 and opening and closing of the second electromagnetic on-off valve 13x when the deodorizing button is pressed is not particularly limited, and either may be performed first. Moreover, when ending deodorization, in the said embodiment, although the negative pressure pump 3 is stopped automatically after progress for a predetermined time, for example, a stop button is provided and the negative pressure pump 3 is stopped at a user's desired timing. You can also Alternatively, the negative pressure pump 3 may be stopped when the stop button is not pressed for a predetermined time.

<4-3>
The position where the pressure sensor 13u is provided is not particularly limited, and the first communication pipe 13r is connected between the first electromagnetic on-off valve 13t and the discharge pipe part 13j or the second communication pipe 13v and the first communication pipe 13w. Any position between the tube 13r and the tube 13r may be used. Further, the pressure sensor 13u is not always necessary and may be omitted.

<4-4>
In the above embodiment, the negative pressure pump 3 is disposed in the living room 4 (including the inside of the wall), and the negative pressure pump 3 is connected to the sewage piping 5 such as a building drainage pipe. However, the negative pressure pump 3 can be arranged inside the building other than the living room 4 or outside the building. The negative pressure pump 3 can be connected to the sewage piping 5. In addition, the mobile toilet 1 of the plurality of living rooms 4 can be connected to one negative pressure pump 3.

<4-5>
In each of the above embodiments, drainage and water injection are performed by opening and closing the electromagnetic on-off valve, but an electric valve, a hydraulic valve, an air valve, or the like may be used.

<4-6>
The timing of driving the negative pressure pump 3, opening / closing the first electromagnetic opening / closing valve 13 t and opening / closing of the second electromagnetic opening / closing valve 13 x in the above embodiment is an example. The body 13b moves to open the drainage channel 12 and the stool flows to the negative pressure pump 3 side. (2) The valve body 13b moves to close the drainage channel 12. In addition, the timing of pouring water is not particularly limited as long as flushing water can be supplied to the bowl 11 so as to encourage the stool to flow or not to overflow.

<4-7>
The negative pressure pump is not particularly limited, and may not be as shown in FIGS. That is, it is not particularly limited as long as it can suck sewage.

<4-8>
In the said embodiment, although the toilet bowl main body is comprised so that a movement is possible, it may not necessarily move and may be fixed.

DESCRIPTION OF SYMBOLS 1 Mobile toilet 11 Bowl 11a Discharge port 12 Discharge path 13 Valve mechanism 13b Valve body 13h Cylinder part 13k Spring 13r 1st communicating pipe (1st communicating path)
13v Second communication pipe (second communication path)
13w Branch pipe 13x 1st electromagnetic on-off valve (1st on-off valve)
13t Second electromagnetic on-off valve (second on-off valve)
14 Water injection path 15 Control device 2 Sewage pipe 3 Negative pressure pump

Claims (5)

A flush toilet that can be connected to a negative pressure pump,
A bowl having a discharge port;
A water injection channel for supplying flush water to the bowl;
A valve mechanism connected to the negative pressure pump and for discharging the water stored in the bowl from the outlet;
A control unit for controlling opening and closing of the valve mechanism;
With
The valve mechanism is
A discharge path having a suction side end and a discharge side end, and flowing sewage discharged from the discharge port to the negative pressure pump side;
A valve body that opens and closes the discharge path between the suction side end and the discharge side end; and
A cylinder portion for accommodating the valve body;
Urging means for urging the valve body so that the discharge path is closed;
A first communication path communicating the cylinder part and the discharge side end of the discharge path;
A first on-off valve provided in the middle of the first communication path;
A second communication path communicating between the first on-off valve and the cylinder part and between the first on-off valve and the discharge side end in the first communication path;
A branch path connected to the second communication path 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 discharge-side end portion of the second communication path and the discharge-side end portion and allowing only air flow to the discharge-side end portion; ,
A second check valve that is disposed closer to the cylinder part than the branch path in the second communication path and allows only air flow to the cylinder part;
With
The control unit is based on a predetermined operation.
In an initial state, the first on-off valve and the second on-off valve are closed,
A first step of driving the negative pressure pump;
A second step of opening the second on-off valve and sucking odor through the branch path;
Run the flush toilet.   The flush toilet according to claim 1, further comprising a step of stopping the negative pressure pump after a predetermined time has elapsed from the first or second step. The controller is
After a predetermined time from the second step,
A third step of closing the second on-off valve, opening the first on-off valve, and reducing the pressure of the cylinder portion to move the valve body against the biasing means and to open the discharge passage. When,
A fourth step of closing the first on-off valve, opening the second on-off valve, increasing the pressure of the cylinder part, moving the valve body by the biasing means, and closing the discharge path;
A fifth step of stopping the negative pressure pump;
As well as
The flush toilet according to claim 1 or 2, further comprising a step of supplying flush water to the bowl during the discharging operation.   In the first communication passage, a pressure detection unit attached to either the discharge side end portion side of the first on-off valve or the discharge side end portion side of the second communication passage to the second on-off valve side. The flush toilet according to claim 1, further comprising: A negative pressure pump,
Sewage piping connected to the negative pressure pump;
A flush toilet according to any one of claims 1 to 4,
A flush toilet system, wherein the flush toilet valve mechanism is detachably connected to the sewage pipe.