JP2017082575A - Portable flush toilet and its system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a portable flush toilet with a simple structure and its system.SOLUTION: The portable flush toilet of the present invention is a flush toilet connectable to a negative pressure pump. The portable flush toilet includes a bowl having a drain hole, a water channel for supplying flush water to the bowl, a valve mechanism connected to the negative pressure pump for discharging the stored water from the bowl through the drain hole, and a control unit for controlling the opening and closing of the valve mechanism.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a mobile 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 type 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 the connection between the negative pressure tank and the toilet body. And a vacuum pump attached to the negative pressure tank, a discharge valve for opening and closing a discharge port provided at the bottom of the negative pressure tank, and a control device. And the said control apparatus is comprised so that the said vacuum pump may be operated, the step A which makes the said negative pressure tank into a negative pressure state, the step B which opens the said on-off valve, and the step C which opens the said discharge valve may be performed Has been.

  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.

JP 2014-173278 A

  However, in the case of the negative pressure suction toilet as described above, the excrement discharged from the toilet is temporarily stored in the negative pressure tank, and then 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 is a demand for a simple toilet structure.

  This invention is made | formed in order to energize the said problem, and it aims at providing the mobile flush toilet and flush toilet system with a simple structure.

  The mobile flush toilet according to the first aspect of the present invention is a flush toilet that can be connected to a negative pressure pump, and includes a bowl having a discharge port, a water injection passage for supplying flush water to the bowl, and the negative pressure pump. A valve mechanism for discharging the stored water stored in the bowl from the discharge port; and a controller for controlling opening and closing of the valve mechanism.

  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 the mobile flush toilet, the valve mechanism can be configured as follows. That is, as an example, the valve mechanism has a suction side end portion and a discharge side end portion, a discharge path for flowing sewage discharged from the discharge port to the negative pressure pump side, and the suction side end portion and the discharge side. A valve body that opens and closes the discharge passage, a cylinder portion that houses the valve body, and a biasing unit that biases the valve body so that the discharge passage is closed. A first communication passage that communicates the cylinder portion with a discharge side end of the discharge passage; a first on-off valve that is provided in the middle of the first communication passage; and the first open / close valve in the first communication passage. A second communication passage communicating between the valve and the cylinder portion, and between the first on-off valve and the discharge-side end portion, and an end portion provided in the second communication passage and open to atmospheric pressure A second opening / closing valve provided in the middle of the branch path, and an end portion on the discharge side end side of the second communication path A first check valve that is arranged between the discharge side end and allows only air flow to the discharge side end, and in the second communication path, the cylinder part is more than the branch path. And a second check valve that is arranged on the side and allows only air flow to the cylinder portion side.

  In each of the mobile flush toilets described above, the end of the branch path is opened so as to face the bowl, and can be configured to be able to suck odor.

  Thereby, the odor produced in the bowl can be sucked through the branch path.

  In each of the mobile flush toilets, the control unit can be configured to control driving of the negative pressure pump, opening and closing of the first and second on-off valves, and supply of flush water through the water injection channel. .

  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 mobile flush toilets described above, and the valve mechanism of the movable flush toilet includes The sewage pipe is detachably connected.

  In order to achieve the above object, a vacuum flush toilet system according to the second aspect of the present invention is a vacuum toilet system in which water stored in a bowl of a toilet bowl is sucked and drained from a discharge port of the bowl to a vacuum pipe. The toilet is configured to be movable, and has a discharge passage having a vacuum valve in the middle of connecting the discharge port of the bowl and a vacuum pipe, and one end faces the bowl, A water injection channel for injecting cleaning water, a water injection channel on / off solenoid valve for opening and closing the water injection channel, and a control device for controlling at least the water injection channel on / off solenoid valve are provided, and the vacuum pipe includes a vacuum pipe main body and a vacuum pipe main body. Provided with a plurality of toilet connection ports exposed in the room from the indoor wall surface or floor surface at positions separated in the longitudinal direction, the vacuum pump suction side is connected to the vacuum pipe body, and the discharge side of the vacuum pump It is characterized in that it is connected to the sewer pipe path.

  In the vacuum flush toilet system according to the second aspect of the present invention, the vacuum pump is preferably a liquid ring vacuum pump.

  In the vacuum pump, a solid material crushing means for finely crushing solid materials such as feces may be provided at the suction side inlet.

  In the vacuum flush toilet system of the second aspect of the present invention, the vacuum valve has a valve body that opens and closes the discharge path, a cylinder portion that slidably accommodates the valve body, and the valve body that is closed. The urging means for urging, the cylinder portion, and a communication pipe that communicates the discharge side with the valve body of the discharge path, the communication pipe having a communication pipe opening and closing solenoid valve in the middle, A state in which the first branch pipe is opened between the communication pipe on / off solenoid valve and the cylinder part, and the second branch pipe is opened to the atmosphere between the communication pipe on / off solenoid valve and the discharge pipe side of the communication pipe. It is preferable that the first branch pipe includes a first branch pipe opening / closing solenoid valve, and the second branch pipe includes a second branch pipe opening / closing solenoid valve.

  In the vacuum flush toilet system of the second aspect of the present invention, it is preferable that a faucet is provided in the vicinity of the assumed toilet installation position.

  In the vacuum flush toilet system of the second aspect of the present invention, it is preferable that the drain port of the bowl has an inner diameter equal to or smaller than the inner diameter of the vacuum pipe.

  That is, if the drain outlet is larger than the inner diameter of the vacuum pipe, excrement larger than the inner diameter of the vacuum pipe may be sucked into the vacuum pipe and clogged.

  The vacuum flush toilet system of the second aspect of the present invention is a vacuum toilet system in which the water stored in the bowl of the toilet bowl is sucked and drained from the outlet of the bowl to the vacuum pipe as described above, The toilet is movably formed, and has a discharge passage having a vacuum valve in the middle of connecting the discharge port of the bowl and a vacuum pipe, and one end faces the bowl, and the cleaning water is poured into the bowl. A water injection path that opens and closes the water injection path, and a control device that controls at least the water injection path opening and closing electromagnetic valve. The vacuum pipe is separated in the longitudinal direction of the vacuum pipe main body and the vacuum pipe main body. A plurality of toilet outlets that are exposed indoors from the indoor wall surface or floor surface, and a vacuum pump suction side is connected to the vacuum pipe body, and a discharge side of the vacuum pump is connected to a sewage pipe line. Therefore, the mobile toilet is moved to the desired installation position, connected to the toilet outlet provided in the vicinity, and connected to the outlet of the discharge path. It can be discharged to the pipeline. Therefore, the mobile toilet can be easily used as a vacuum flush toilet.

  According to the mobile flush toilet and flush toilet system according to the present invention, the structure can be simplified.

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 the action | operation of the mobile toilet of the flush toilet system of FIG. 1, Comprising: The figure (a) is a figure showing the water storage state in a bowl, The figure (b) demonstrates the injection start state of washing water. FIG. It is a figure explaining the action | operation of the mobile toilet of the flush toilet system of FIG. 1, Comprising: The figure (a) is a figure explaining the state by which a valve mechanism is open | released and water is poured into a normal water storage state. It is a figure explaining operation | movement of a valve mechanism, The figure (a) is a figure explaining the suction start state of a negative pressure pump, The figure (b) is a figure explaining the open state of a valve body. It is a figure explaining operation | movement of a valve mechanism, Comprising: The figure (a) is a figure explaining the stored water drainage stop state, The figure (b) is a figure explaining the waste_water | drain in sewage piping, and the odor suction state in a bowl It is. It is the schematic of the valve mechanism which concerns on 2nd Embodiment of this invention. It is a figure explaining operation | movement of the valve mechanism of FIG. It is a figure explaining operation | movement of the valve mechanism of FIG. It is a timing chart of operation | movement of the valve mechanism of FIG. It is the schematic which shows the other example of the flush toilet system which concerns on this invention. It is the schematic which shows the other example of the flush toilet system which concerns on this invention.

<A. First Embodiment>
Below, 1st Embodiment of the flush toilet system which concerns on this invention is described, referring 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 mobile toilet (movable 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>
FIG. 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.

  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 is connected to the discharge port 11a side of the bowl 11 on the large diameter side, the small diameter side end portion is exposed to the outside through the body 10a, and one end portion of the 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.

  Further, the valve mechanism 13 is provided with a communication pipe 13c for connecting the upper part of the cylinder part 13h and the discharge pipe part 13j and communicating them. The communication pipe 13c is provided with a check valve 13g on the discharge pipe part 13j side, and a first electromagnetic on-off valve 13d on the cylinder part 13h side.

  The check valve 13g allows gas and liquid to flow through the communication pipe 13c only from the cylinder part 13h side to the discharge pipe part 13j. Further, the first electromagnetic on-off valve 13d is opened and closed by a control signal from the control device 15 described later.

  Furthermore, a first branch pipe 13m is connected to the communication pipe 13c between the upper part of the cylinder portion 13h and the first electromagnetic on-off valve 13d, and between the check valve 13g and the first electromagnetic on-off valve 13d, A second branch pipe 13n is connected. 13 m of 1st branch pipes are equipped with the 2nd electromagnetic on-off valve 13e in the middle, and the edge part is open | released in air | atmosphere. The second electromagnetic on-off valve 13e is opened and closed by a control signal from the control device 15 to be described later. When the second electromagnetic on-off valve 13e is opened, the communication pipe 13c becomes atmospheric pressure. On the other hand, the second branch pipe 13n is provided with a third electromagnetic opening / closing valve 13f in the middle, and an end thereof is opened in the bowl 11 at a position above the water storage in the bowl 11.

  Returning to FIG. 4, the description of the water injection mechanism of the mobile toilet 1 will be continued. 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 control device 15 opens and closes the water injection path electromagnetic on-off valve 14c, the first electromagnetic on-off valve 13d, the second electromagnetic on-off valve 13e, and the third electromagnetic on-off valve 13f as described later. 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>
Next, the usage method and operation | movement of this vacuum flush toilet system are demonstrated in detail, also referring FIGS. 6 and 7 are diagrams illustrating the operation of the mobile toilet of the flush toilet system, and FIGS. 8 and 9 are diagrams illustrating the operation of the vacuum valve.

(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.

(2) When the user finishes the stool, the user or an assistant pushes the switch of the remote controller 19 to operate the negative pressure pump 3. That is, when the switch is pressed, the negative pressure pump 3 is turned on by the control signal from the control device 15 and the motor 31 rotates. At this time, the water injection solenoid valve 14c, the first solenoid valve 13d, the second solenoid valve 13e, and the third solenoid valve 13f are in a closed state.

(3) When the controller of the control device 15 determines that the time t1 has elapsed from the start of operation of the negative pressure pump 3, the second electromagnetic on-off valve 13e and the third electromagnetic on-off valve 13f are closed. The first electromagnetic on-off valve 13d and the water injection electromagnetic on-off valve 14c are opened by a control signal from the control unit of the control device 15. That is, as shown in FIG. 8A, the air inside the cylinder portion 13h is sucked into the sewage pipe 2 side by opening the first electromagnetic on-off valve 13d. As a result, the inside of the cylinder part 13h is depressurized, and the valve body 13b is pulled up above the cylinder part 13h against the urging force of the spring 13k.

(4) Then, by pulling up the valve body 13b, the valve mechanism 13 is opened, and as shown in FIGS. 7 (a) and 8 (b), the water containing the filth in the bowl 11 is stored on the sewage pipe 2 side. Sucked into. At the same time, as shown in FIG. 7A, cleaning water is injected into the bowl 11 from the water injection port 14a, and the injected cleaning water flows along the inner wall surface of the bowl 11 in a swirling flow, 11 is washed. Note that the amount of water to be washed and the water injection speed are such that the water in the bowl 11 is emptied by the time t2 when drainage is stopped, which will be described later, and air is not sucked from the discharge port 11a or does not overflow. Is set to

  The time t1 is the time from when the negative pressure pump 3 starts operating until the valve body 13b reaches a vacuum level in which the valve body 13b can be sucked into the cylinder portion 13h against the urging force of the spring 13k. It is determined appropriately according to the capacity of the sewage pipe 2 and the capacity of the negative pressure pump 3.

(5) When it is determined in the control unit of the control device 15 that the time t2 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 The first electromagnetic on-off valve 13d is closed by the signal, and the second electromagnetic on-off valve 13e and the third electromagnetic on-off valve 13f are opened.

  As shown in FIG. 9A, when the second electromagnetic opening / closing valve 13e is opened, the inside of the cylinder portion 13h becomes atmospheric pressure, and the valve body 13b moves so as to close the drain passage 12 by the biasing force of the spring 13k. Thereby, the suction to the sewage pipe 2 side of the stored water in the bowl 11 is stopped. Further, as shown in FIG. 9 (b), the odor in the bowl 11 (shown by a broken arrow in FIG. 7 (b)) is caused by opening the third electromagnetic on-off valve 13f, so that the second branch pipe 13n and the communication pipe It passes through 13c and is sucked into the sewage 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.

(6) When it is determined in the control unit of the control device 15 that the time t3 has elapsed since the first electromagnetic on-off valve 13d was closed, the water injection channel electromagnetic on-off valve 14c is turned on by a signal from the control unit of the control device 15. Closed. The time t3 is the time from when the valve body 13b is closed and the suction and drainage from the bowl 11 to the sewage pipe 2 side is finished, and the water is poured from the water injection path 14 into the bowl 11 to the set water storage height. And it determines suitably according to the setting water storage height of the bowl 11, etc.

(7) When it is determined in the control unit of the control device 15 that the time t4 has elapsed since the first electromagnetic on-off valve 13d is closed, the negative pressure pump 3 is controlled by a control signal from the control unit of the control device 15. Stops and the third electromagnetic on-off valve 13f is closed. The time t4 is appropriately determined according to the capacity of the bowl 11, the capacity of the sewage pipe 2, the capacity of the negative pressure pump 3, and the like.

<4. Features>
This flush toilet system is configured as described above and has the following excellent effects.

(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. .

  In addition, the position which arrange | positions the edge part of the 1st branch pipe 13m is not specifically limited, What is necessary is just to be open | released by air | atmosphere. Further, the position where the end of the second branch pipe 13n is arranged is not particularly limited as long as the odor generated in the mobile toilet 1 can be sucked. Therefore, it may be other than the position facing the bowl 11.

<B. Second Embodiment>
Next, 2nd Embodiment of the flush toilet system which concerns on this invention is described, referring drawings. The second embodiment is different from the first embodiment in the mechanism of the valve mechanism, and the others are mainly the same. Therefore, the same components may be denoted by the same reference numerals and description thereof may be omitted.

<1. Overview of valve mechanism>
FIG. 10 is a schematic explanatory view of a vacuum valve according to the present embodiment. As shown in FIG. 10, the vacuum valve is provided with a first communication pipe 13r for connecting the upper part of the cylinder part 13h and the discharge pipe part 13j and communicating them. The first communication pipe 13r is provided with a first check valve 13s on the discharge pipe part 13j side and a fourth electromagnetic on-off valve (first on-off valve) 13t on the cylinder part 13h side. Yes. 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.

  In addition, a second communication pipe 13v is provided that connects the cylinder portion 13h and the fourth electromagnetic opening / closing valve 13t and between the first check valve 13s and the second check valve 13y. The third branch pipe 13w is connected to the second communication pipe 13v. A fifth electromagnetic on-off valve 13x (second on-off valve) is provided in the middle of the third branch pipe 13w. Further, the end portion of the third branch pipe 13w is opened to the atmosphere in the same manner as the first branch pipe 13m of the first embodiment. In the second communication pipe 13v, a second check valve 13y is provided on the cylinder portion 13h side of the third 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.

<2. Operation of valve mechanism>
Next, an example of the operation of this valve mechanism will be described with reference to FIGS. 10 to 12 are diagrams for explaining the operation of the valve mechanism, and FIG. 13 is a timing chart showing opening and closing of each electromagnetic valve and the like of the valve mechanism.

(1) When the user finishes the stool and the user or an assistant presses the switch of the remote controller 19, the water injection electromagnetic open / close valve 14c is opened, and the washing water for washing is supplied into the bowl 11 from the water injection port 14a. Water is supplied. After a short time t5, the negative pressure pump 3 operates. At this time, the fourth electromagnetic on-off valve 13t and the fifth electromagnetic on-off valve 13x are closed. In the following description, the remote controller 19 is operated and the time when the water injection solenoid valve 14c is opened is set to 0.

(2) When the control unit 15 determines that the time t6 has elapsed, as shown in FIG. 11, the fourth electromagnetic on-off valve 13t is open with the fifth electromagnetic on-off valve 13x closed. It becomes. Thereby, 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, the pressure in the cylinder portion 13h is reduced, and the valve body 13b is pulled up above the cylinder portion 13h against the urging force of the spring 13k. Thereafter, at a time t7 after a lapse of a short time (for example, about 1 to 5 seconds) from the time t6, the water injection solenoid valve 14c is closed, and the supply of flush water is stopped.

(3) Then, by pulling up the valve body 13b, the valve mechanism 13 is opened, and as shown in FIG. 11, the stored water containing the filth in the bowl 11 is sucked into the sewage pipe 2 side.

(4) When it is determined in the control unit of the control device 15 that the time t8 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 The water injection path electromagnetic opening / closing valve 14c is opened again by the signal. Thereby, water storage is performed to the bowl 11 after sewage was discharged | emitted.

  At the same time, by opening the fifth electromagnetic on-off valve 13x, as shown in FIG. 12, the inside of the cylinder portion 13h becomes atmospheric pressure through the first communication pipe 13r and the second communication pipe 13v, and the biasing force of the spring 13k The valve body 13b moves so as to close the drainage channel 12. Thereby, the suction to the sewage pipe 2 side of the stored water in the bowl 11 is stopped.

  Further, by opening the fifth electromagnetic opening / closing valve 13x, the odor around the mobile toilet 1 is sucked into the sewage pipe 2 through the third branch pipe 13w, the second communication pipe 13v, and the first communication pipe 13r. Is done. 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.

(5) Thereafter, at a time t9 after a lapse of a short time (for example, about 1 to 5 seconds) from the time t8, the fourth electromagnetic on-off valve 13t is closed. Thereby, the air by the atmospheric pressure from the 3rd branch pipe 13w flows only to the cylinder part 13h side. Thus, after water supply to the bowl 11 and odor suction are performed for a certain period of time, the water injection path electromagnetic opening / closing valve 14c is closed after time t10 to stop water supply, and the negative pressure pump 3 is stopped after time t11. Thereafter, after time t12, the fifth electromagnetic on-off valve 13x is also closed, and the air flow and odor suction due to atmospheric pressure are also stopped.

<3. Features>
As described above, according to the present embodiment, since the number of electromagnetic on-off valves is two, the cost can be reduced and the control is facilitated as compared with the first embodiment. In addition, only the third branch pipe 13w can make the inside of the cylinder portion 13h atmospheric pressure, and can also suck odors. Therefore, the number of branch pipes can be reduced as compared with the first embodiment. In addition, the position which arrange | positions the edge part of the 3rd 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 can be attracted | 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.

<C. 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.

<1>
In the above embodiment, there are two connection ports 22 and 23. However, in the case of a multi-bed room, three or more connection ports may be provided according to the number of beds installed. For example, as shown in FIG. 14, a branch pipe 21a can be provided from the pipe body 21 passing through the third wall, and a connection port can be provided in the branch pipe 21a. The branch pipe 21 a in the example of FIG. 14 extends from the third wall 403 to the fourth wall 404 and further extends along the fourth wall 404. Then, one connection port 24 is added to the pipe main body 21 passing through the third wall 403, and two connection ports 25 and 26 are provided in the branch pipe 21 a passing through the fourth wall 404.

  Moreover, although the piping main body 21 is arrange | positioned inside the wall in the said embodiment, it is not specifically limited. That is, the piping main body 21 and the branch piping 21a can be arranged in the living space 42 and covered with the decorative cover. When piping is arranged in the living space 42, it can be arranged along the wall, floor, or ceiling. Furthermore, the piping main body 21 can also be arrange | positioned along the outer wall of a building. Similarly, a plurality of water taps 6 can be provided instead of one. In this case, a water tap can be provided in the vicinity of the plurality of connection ports.

<2>
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.

<3>
The mobile toilet 1 and the negative pressure pump 3 can be connected without using the sewage piping 5 of the building. This point will be described with reference to FIG.

  In the example shown in FIG. 15, the mobile toilet 1 described above is arranged in the rooms 4 on the first floor and the second floor of the building. The flexible hose 12a of each mobile toilet 1 is detachably connected to a connection port 22 provided on the wall of each living room 4. These connection ports 22 are connected to a drainage pipe 55 extending from the wall of the living room 4 along the outer wall of the building. The drainage pipe 55 is not a sewage pipe of the building but a drainage pipe dedicated to the mobile toilet 1. The drainage stand 55 is connected to a negative pressure pump 3 arranged outside the building, and feces are discharged to a sewage mass through a pipe extending from the negative pressure pump 3.

  In the said embodiment, since the negative pressure pump 3 is arrange | positioned in each living room 4, when draining with the mobile toilet 1, the negative pressure pump 3 is driven by the remote controller 19, In this example, Since one negative pressure pump 3 is connected to the mobile toilet 1 of each living room 4, the inside of the pipe body 21 connected to the negative pressure pump 3 is always in a negative pressure state. Therefore, when the remote controller 19 is operated in the living room 4, the water injection path electromagnetic opening / closing valve 14 c in the mobile toilet 1 and each electromagnetic opening / closing valve of the valve mechanism 13 are driven.

  In addition, the arrangement | positioning position of the negative pressure pump 3 is not specifically limited, The inside of a building outside a living room may be sufficient. In addition, when the mobile toilet 1 as described above is installed in all the living rooms 4 in the building, and the sewage piping line installed in the building in advance can be used as a dedicated pipe for the mobile toilet 1 in each living room 4 May do so.

<4>
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.

<5>
In the first embodiment, the negative pressure pump 3 is operated and the first electromagnetic on-off valve 13d is opened after the elapse of time t1, but the first electromagnetic on-off valve 13d is opened simultaneously with the operation of the negative pressure pump 3. You may make it.

  In each of the above embodiments, the first electromagnetic on-off valve 13d is opened by the timer control. However, a sensor for measuring the degree of vacuum in the sewage pipe 2 is provided, and the pressure measured by the sensor is a predetermined vacuum. The first electromagnetic on-off valve 13d may be opened when the time is reached.

<6>
In each of the above embodiments, the negative pressure pump 3 is operated by operating the remote controller 19, but a pressure sensor is provided in the sewage pipe 2 and the pressure in the negative pressure pump 3 is a vacuum pressure required for vacuum drainage. When the pressure is further lowered, the negative pressure pump 3 may be automatically operated to always keep the inside of the sewage pipe 2 at a predetermined vacuum pressure.

<7>
In each of the above embodiments, the first toilet connecting port 22 and the second toilet connecting port 23 connect the joint portion at the end of the flexible hose 14d, so that the valve is opened and the joint portion is removed. However, the flexible hose 14d and the toilet connection ports 22 and 23 may have a flange connection or a union connection structure. Moreover, when it is set as a flange connection or union connection structure, the toilet bowl connection port which is not used should just be sealed with a closing flange, a cap, etc.

<8>
In the above embodiment, the control device is wirelessly controlled by the remote controller 19, but an on / off switch of a negative pressure pump is provided on the handle 10d of the toilet body 10 and the switch and the control device are connected by wire. It doesn't matter.

<9>
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.

DESCRIPTION OF SYMBOLS 1 Mobile toilet 10 Toilet body 10a Body 10b Toilet seat 10c Lid 10d Handle 11 Bowl 11a Discharge port 12 Discharge path 12a Flexible hose 12b Reducer 13 Valve mechanism 13a Body 13b Valve body 13c Communication pipe 13d First electromagnetic on-off valve 13e Second electromagnetic On-off valve 13f Third electromagnetic on-off valve 13g Check valve 13h Cylinder part 13i Suction pipe part 13j Discharge pipe part 13k Spring 13m First branch pipe 13n Second branch pipe 13p Drainage inlet 13q Drainage outlet 14 Inlet channel 14a Inlet port 14b Inlet port 14c Water-injection solenoid valve 14d Flexible hose 14e Water faucet 15 Control device 15a Power cable 19 Remote controller 2 Sewage pipe 21 Pipe body 22 First toilet port 23 Second toilet port 3 Negative pressure pump 3a Negative pressure pump Body 3b Suction side piping 3c Discharge side piping 1 Motor 32 housing 33 screw rotor 34 cutter 4 room 41 toilet booth 42 living space 5 sewer pipe passage

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;
Equipped with a mobile flush toilet. 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 provided in 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;
The mobile flush toilet according to claim 1, comprising:   The mobile flush toilet according to claim 2, wherein an end of the branch path is opened so as to face the bowl, and is configured to be able to suck odor.   The mobile flush unit according to any one of claims 1 to 3, wherein the control unit controls driving of the negative pressure pump, opening and closing of the first and second on-off valves, and supply of flush water through the water injection channel. toilet. A negative pressure pump,
Sewage piping connected to the negative pressure pump;
The mobile flush toilet according to any one of claims 1 to 4,
A flush toilet system in which the valve mechanism of the mobile flush toilet is detachably connected to the sewage pipe.