JP6888801B2 - Mobile flush toilet and flush toilet system - Google Patents

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, a mobile toilet (portable toilet) may be installed in the hospital room, the resident's bedroom of a nursing facility, or the bedside of the bedroom at home. Then, the user who gets up from the bed can immediately transfer to the toilet seat of this portable toilet by himself or with the assistance of a caregiver. 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 the excrement is collected from the toilet body by a nurse or a caregiver. Remove the containing bowl. Then, carry this bowl to the toilet and transfer the excrement to a flush toilet in the toilet. After that, after cleaning the bowl, it is set in the toilet bowl again.

By the way, in hospitals and long-term care facilities, one nurse or long-term care worker has to care for a large number of patients and residents of the long-term care facility. Absent. However, in the case of hospitals and nursing homes, it is common to have multiple beds in one room called a multi-bed room, so if you do not clean the bowl frequently, you will have a strange odor of excrement. There is a problem that the patient stays in the hospital room or bedroom and makes patients and residents in the same room feel uncomfortable.

Therefore, a negative pressure suction type toilet has been proposed in which the above-mentioned mobile toilet bowl is made like a flush toilet so that the excrement of the bowl can be easily discharged to reduce the burden on nurses and caregivers (for example). , Patent Document 1). This negative pressure suction type toilet opens and closes 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 drainage pipe, and a connection between the negative pressure tank and the toilet body. It is provided with an on-off valve, 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. Then, the control device is configured to execute the step A of operating the vacuum pump to bring the negative pressure tank into a negative pressure state, the step B of opening the on-off valve, and the step C of opening the discharge valve. Has been done.

That is, in this negative pressure suction type toilet, after the inside of the negative pressure tank is put into a negative pressure state by a vacuum pump, the on-off valve provided in the drainage pipe connecting the toilet bowl body and the negative pressure tank is opened to open the negative pressure. The excrement in the toilet bowl body is sucked into the tank together with washing water. Then, when the suction of the excrement into the negative pressure tank is completed, the on-off valve is closed and the inside of the negative pressure tank is returned to the atmospheric pressure. After that, the drain valve provided at the bottom of the negative pressure tank is opened so that the sewage containing the excrement in the negative pressure tank is drained to the sewage mass.

Japanese Unexamined Patent Publication No. 2014-173278

However, in the case of the negative pressure suction type toilet as described above, the excrement discharged from the toilet bowl is once 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 has been a demand for a simple structure of the toilet itself.

The present invention has been made to take advantage of the above problems, and an object of the present invention is to provide a mobile flush toilet and a flush toilet system having a simple structure.

The first mobile flush toilet according to the present invention is a flush toilet that can be connected to a negative pressure pump, and has a bowl having a discharge port, a water injection channel for supplying water wash water to the bowl, and the negative pressure pump. It is provided with a valve mechanism for discharging the water stored in the bowl and connected from the discharge port, and a control unit for controlling the opening and closing of the valve mechanism.

According to this configuration, the valve mechanism can be directly or indirectly connected to the negative pressure pump without providing a toilet tank, so that the structure can be simplified.

In 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, and has a discharge path for flowing sewage discharged from the discharge port to the negative pressure pump side, and the suction side end portion and discharge. A valve body that opens and closes the discharge path between the side end portions, a cylinder portion that houses the valve body, and an urging means that urges the valve body so that the discharge path is closed. , The first opening / closing of the first opening / closing in the first connecting passage, the first opening / closing valve provided in the middle of the first connecting passage, and the first opening / closing of the first connecting passage connecting the cylinder portion and the discharge side end of the discharge passage. A second communication passage that communicates 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 opened to atmospheric pressure. It is arranged between the branch path having the above, the second on-off valve provided in the middle of the branch path, the end of the second communication passage on the discharge side end side, and the discharge side end. In the first check valve that allows only the flow of air to the discharge side end side and the second connecting passage, the air is arranged on the cylinder portion side of the branch path and to the cylinder portion side. A second check valve that allows only flow can be provided.

In each of the mobile flush toilets, the end of the branch road is opened so as to face the bowl, and the odor can be sucked.

As a result, the odor generated 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 the drive of the negative pressure pump, the opening and closing of the first and second on-off valves, and the supply of flush water by the water injection channel. ..

The 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 above-mentioned mobile flush toilets, and the valve mechanism of the mobile flush toilet is provided. , It is detachably connected to the sewage pipe.

In order to achieve the above object, the second vacuum flush toilet system according to 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 discharge port of the bowl to the vacuum pipe. The toilet bowl is movable, and has a discharge path having a vacuum valve in the middle of connecting the discharge port of the bowl and the vacuum pipe, and one end of the toilet bowl faces the inside of the bowl. A water injection channel for injecting wash water, a water injection channel opening / closing electromagnetic valve for opening / closing the water injection channel, and a control device for controlling at least the water injection channel opening / closing electromagnetic valve are provided. A plurality of toilet connection ports exposed indoors from the indoor wall surface or the indoor floor surface are provided at positions separated in the longitudinal direction, the suction side of the vacuum pump is connected to the vacuum pipe body, and the discharge side of the vacuum pump is the sewage pipe line. It is characterized by being connected to.

In the second vacuum flush toilet system of the present invention, it is preferable that the vacuum pump is a liquid-sealed vacuum pump.

Further, in the vacuum pump, a solid matter crushing means for finely crushing solid matter such as stool may be provided at the suction side inlet.

In the second vacuum water washing toilet system of the present invention, the discharge passage is closed with the vacuum valve, the valve body that opens and closes the discharge path, the cylinder portion that slidably accommodates the valve body, and the valve body. A communication pipe that communicates the cylinder portion with the discharge side from the valve body of the discharge passage is provided, and the communication pipe has a communication pipe opening / closing electromagnetic valve in the middle. A state in which the end of the first branch pipe is open to the atmosphere between the communication pipe opening / closing electromagnetic valve and the cylinder portion, and the end of the second branch pipe is opened between the communication pipe opening / closing electromagnetic valve and the discharge path side of the communication pipe. It is preferable that the first branch pipe includes a first branch pipe opening / closing electromagnetic valve and the second branch pipe includes a second branch pipe opening / closing electromagnetic valve.

In the second vacuum flush toilet system of the present invention, it is preferable that a water tap is provided in the vicinity of the assumed position where the toilet bowl is installed.

In the second vacuum flush toilet system 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 port 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 side and cause clogging.

The second vacuum water-washing toilet system 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 bowl is formed to be movable, and a discharge path having a vacuum valve in the middle of connecting the discharge port of the bowl and the vacuum pipe, and one end facing the inside of the bowl, and pouring washing water into the bowl. The water injection channel is provided, a water injection channel opening / closing electromagnetic valve for opening / closing the water injection channel, and a control device for controlling at least the water injection channel opening / closing electromagnetic valve, and the vacuum pipe is separated from the vacuum pipe main body in the longitudinal direction of the vacuum pipe main body. A plurality of toilet connection ports exposed indoors from the indoor wall surface or indoor floor surface are provided at the above position, the suction side of the vacuum pump is connected to the vacuum pipe body, and the discharge side of the vacuum pump is connected to the sewage pipe line. Therefore, by moving the mobile toilet bowl to the desired installation position, connecting the toilet bowl connection port provided nearby to the connection port of the discharge path, and operating the vacuum pump, the sewage in the bowl can be removed from the sewage piping line. Can be discharged to the toilet. Therefore, the mobile toilet can be easily used as a vacuum flush toilet.

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

It is a figure which outlines the flush toilet system which concerns on this invention. It is a figure explaining the connection state of the sewage pipe of the flush toilet system of FIG. 1 and a negative pressure pump. It is sectional drawing of one example of the negative pressure pump used for the flush toilet system of FIG. FIG. 5 is a schematic cross-sectional view of a mobile toilet bowl of the flush toilet system of FIG. It is a figure which shows typically the valve mechanism part of the mobile toilet of FIG. It is a figure explaining the operation of the mobile toilet of the flush toilet system of FIG. 1, FIG. 1 (a) is a figure which shows the water storage state in a bowl, and FIG. It is a figure. It is a figure explaining the operation of the mobile toilet of the flush toilet system of FIG. 1, and FIG. 1 (a) is a figure explaining the state in which the valve mechanism is opened and the flush water is injected to the normal water storage state. It is a figure explaining the operation of a valve mechanism, FIG. (A) is a figure explaining a suction start state of a negative pressure pump, and FIG. (B) is a figure explaining an open state of a valve body. It is a figure explaining the operation of a valve mechanism, FIG. 3A is a figure explaining the storage drainage stop state, and FIG. 3B is a figure explaining drainage in a sewage pipe and an odor suction state in a bowl. Is. It is the schematic of the valve mechanism which concerns on 2nd Embodiment of this invention. It is a figure explaining the operation of the valve mechanism of FIG. It is a figure explaining the operation of the valve mechanism of FIG. It is a timing chart of the operation of the valve mechanism of FIG. It is the schematic which shows another example of the flush toilet system which concerns on this invention. It is the schematic which shows another example of the flush toilet system which concerns on this invention.

<A. First Embodiment>
The first embodiment of the flush toilet system according to the present invention will be described below 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 a pipe of the flush toilet system and a negative pressure pump, and FIG. 3 is a view showing a negative pressure. It is sectional drawing of a pump.

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

<1. Outline of living room ＞
As shown in FIG. 1, the living room in which the flush toilet system according to the present 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 living room 4 in FIG. 1 is the first wall 401, the wall of the lower living room 4 is the second wall 402, the wall of the right living room 4 is the third wall 403, and the left side. The wall of the living room 4 of the above will be referred to as a fourth wall 404. There are multiple living rooms in nursing care facilities such as elderly homes and condominiums for the elderly, and in buildings such as hospitals.

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

As shown in FIG. 2, the piping main body 21 connected to the negative pressure pump 3 is provided with a first toilet bowl connection port 22 and a second toilet bowl connection port 23. As shown in FIG. 1, the first toilet bowl connection port 22 is arranged so as to be exposed from the third wall 403 in the toilet booth 41, and the second toilet bowl connection port 23 is the third wall 403. 1 It is exposed near the end on the wall 401 side. The valves of the first toilet bowl connection port 22 and the second toilet bowl connection port 23 are opened by connecting the joint portions at the ends of the flexible hose 12a, which will be described later, respectively, and the joint portions are removed. It has a valve structure that closes the valve. The toilet bowl connection ports 22 and 23 and the joint portion as described above can have a structure capable of maintaining decompression.

Further, a bed 43 is provided in the vicinity of the window 44, and a mobile toilet (mobile flush toilet) 1 moved from the toilet booth 41 can be arranged on the right side of the bed 43. Then, in order to be able to arrange the mobile toilet bowl 1, a water tap 6 and a power outlet 150 are provided on the first wall 401, and the second toilet bowl connection port 23 described above is provided on the third wall 403. Is provided. Therefore, water washing water is supplied to the mobile toilet bowl 1 from the water tap 6 via the hose 61, and the cable 15a provided in the mobile toilet bowl 1 is connected to the power outlet 150 to connect the mobile toilet bowl 1 to the power outlet 150. It is possible to supply power to the toilet. Further, by connecting the flexible hose 12a provided on the mobile toilet 1 to the second toilet connection port 23, the feces of the mobile toilet 1 can be discharged into the piping main body 21 via the flexible hose 12a. It has become. Similarly, the power outlet 150 and the water tap 6 can be arranged in the toilet booth 41.

<2. Flush toilet system ＞
The flush toilet system according to the present embodiment includes the above-mentioned mobile toilet bowl 1, a sewage pipe 2, and a 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 above-mentioned pipe main body 21 and the first and second toilet connection ports 22 and 23 connected to the main body 21. Further, as shown in FIGS. 2 and 3, the negative pressure pump 3 can use, for example, a liquid-sealed vacuum pump, and includes a pump main body 3a and a motor 31. The pump main body 3a includes a housing 32, and a screw rotor 33 and a cutter 34 are rotatably arranged in the housing 32. The screw rotor 33 and the cutter 34 are rotated by a motor 31 adjacent to the housing 32.

Further, the housing is provided with a suction side pipe 3b and a discharge side pipe 3c. The above-mentioned piping body 21 is connected to the suction side piping 3b. Further, the suction side pipe 3b has its highest position higher than the highest position of the housing 32 and is connected to the above-mentioned pipe main body 21. On the other hand, the discharge side pipe 3c is connected to a 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 sealing water is always collected in the housing 32. Then, the sewage pipe line 5 is connected to an outdoor sewage mass, and the sewage is discharged to the sewage mass via the sewage pipe line 5.

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

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

<2-2. Mobile toilet ＞
FIG. 4 is a schematic cross-sectional view of the mobile toilet bowl, and FIG. 5 is a diagram schematically explaining a vacuum valve portion of the mobile toilet bowl of FIG. As shown in FIG. 4, the mobile toilet bowl 1 flushes the toilet bowl body 10, the bowl 11 housed in the toilet bowl body 11, the drainage channel 12 for discharging stool together with water from the bowl 11, and the bowl 11 with flush water. It is provided with a water injection channel 14 for supplying water. Further, the mobile toilet bowl 1 includes a valve mechanism (for example, a vacuum valve) 13 provided in the middle of the drainage channel 12, a control device 15 for controlling water injection and drainage, and a remote controller 19 for operating the control device 15. And have. Hereinafter, these members will be described in detail.

The toilet body 10 includes a body 10a, which is configured to accommodate a bowl 11, a drainage channel 12, a water injection channel 14, and a control device 15, and has wheels (not shown) at the lower end. .. Further, the body 10a includes a toilet seat 10b arranged on the upper surface of the bowl 11, a lid 10c that closes the upper opening of the bowl 11 from the upper surface of the toilet seat 10b, and a handle 10d. The bowl 11 is housed in the body 10a and has a discharge port 11a at the bottom thereof. Further, in the bowl 11, as shown in FIG. 6A, which will be described later, water is stored in advance to a predetermined height before use.

The discharge port 11a has the same or slightly smaller diameter as 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. Although not shown, the tip of the flexible hose 12a has a joint structure that can be attached to and detached from the toilet bowl connection ports 22 and 23 as described 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 has a cylinder portion 13h having an internal space, a suction pipe portion 13i communicating with the cylinder portion 13h and forming a part of the drainage channel 12, and a discharge pipe portion 13j. The suction pipe portion 13i is connected to the discharge port 11a of the bowl 11, and the reducer 12b forming a part of the drainage channel 12 is connected to the discharge pipe portion 13j. The reducer 12b has a large diameter side connected to the discharge port 11a side of the bowl 11, and an end portion on the small diameter side penetrates the body 10a and is exposed to the outside, and one end portion of a flexible hose 12a forming a part of the drainage channel 12. Are detachably connected.

A valve body 13b is housed in the cylinder portion 13h, and the drainage channel 12 can be opened and closed between the suction pipe portion 13i and the discharge pipe portion 13j by sliding in the cylinder portion 13h. Further, a spring 13k, which is an urging means, is connected to the valve body 13b, and the valve body 13b is always urged in the direction of closing the drainage channel 12 by the spring 13k.

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

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

Further, a first branch pipe 13m is connected to the communication pipe 13c between the upper portion 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, The second branch pipe 13n is connected. The first branch pipe 13m is provided with a second electromagnetic on-off valve 13e in the middle, and its end is open to the atmosphere. The second electromagnetic on-off valve 13e is opened and closed by a control signal from the control device 15 described later, and 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 on-off valve 13f in the middle, and its end is opened in the bowl 11 at a position above the water storage of the bowl 11.

Returning to FIG. 4, the water injection mechanism of the mobile toilet 1 will be described. As shown in FIG. 4 and FIG. 6 to be described later, a water injection port 14a facing the upper edge of the bowl 11 is provided at one end of the water injection channel 14, and a water supply port 14b is provided at the other end. A water injection channel electromagnetic on-off 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 the water supply plugs 6 provided in the vicinity of the first toilet bowl connection port 22 and the second toilet bowl 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 the operation buttons of the remote controller 19. Further, the control device 15 opens and closes the water injection channel 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, and as described above, power is supplied by connecting the plug of the cable 15a to a power outlet. It has become like.

<3. How to use the flush toilet system>
Next, the usage and operation of this vacuum flush toilet system will be described in detail with reference to FIGS. 6 to 9. 6 and 7 are diagrams showing the operation of the mobile toilet bowl of the flush toilet system, and FIGS. 8 and 9 are diagrams for explaining the operation of the vacuum valve.

(1) First, as shown in FIG. 1, the mobile toilet bowl 1 is moved into the toilet booth 41, which is the assumed installation position, or to the bedside of the living space 42, and the toilet bowl connection port 22 provided in the vicinity thereof (1) The flexible hose 12a connected to the reducer 12b is connected to 23). Further, the hose 61 connected to the water injection channel 14 is connected to the water tap 6, and the plug of the power cable 15a of the control device 15 is connected to the power outlet (not shown). In this state, as shown in FIG. 6A, water is stored up to a predetermined height of the bowl 11.

(2) When the user finishes the stool, the user or an assistant presses 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 is rotated. At this time, the water injection channel 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 are in the closed state.

(3) When the control unit 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 channel electromagnetic on-off valve 14c are opened by the 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 pressure inside the cylinder portion 13h is reduced, so that the valve body 13b is pulled up above the cylinder portion 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 storage containing the filth in the bowl 11 is on the sewage pipe 2 side. Is sucked into. At the same time, as shown in FIG. 7A, the washing water is injected into the bowl 11 from the water injection port 14a, and the injected washing water flows along the inner wall surface of the bowl 11 in a swirling flow to form the bowl. Clean the inside of 11. As for the amount and speed of water injection of the washing water, the water in the bowl 11 is emptied and the air is not sucked from the discharge port 11a or overflows from the bowl 11 by the time t2 when the drainage is stopped, which will be described later. Is set to.

The time t1 is the time from the start of operation of the negative pressure pump 3 until the valve body 13b reaches a degree of vacuum that can be sucked into the cylinder portion 13h against the urging force of the spring 13k in the sewage pipe 2. It is appropriately determined 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 the start of drainage to the time when the sewage is sufficiently sucked into the sewage pipe 2 side has elapsed, the control unit of the control device 15 controls. The signal closes the first electromagnetic on-off valve 13d and opens the second electromagnetic on-off valve 13e and the third electromagnetic on-off valve 13f.

As shown in FIG. 9A, the opening of the second electromagnetic on-off valve 13e causes the inside of the cylinder portion 13h to become atmospheric pressure, and the urging force of the spring 13k causes the valve body 13b to move to close the drainage channel 12. As a result, the suction of the water stored in the bowl 11 to the sewage pipe 2 side is stopped. Further, as shown in FIG. 9B, by opening the third electromagnetic on-off valve 13f, the odor in the bowl 11 (indicated by the broken line arrow in FIG. 7B) is removed from the second branch pipe 13n and the communication pipe. It passes through 13c and is sucked into the sewage pipe 2. Then, 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 time t3 has elapsed since the first electromagnetic on-off valve 13d was closed, the water inlet electromagnetic on-off valve 14c is activated 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, the suction and drainage from the bowl 11 to the sewage pipe 2 side is completed, and the water is injected from the water injection channel 14 into the bowl 11 to the set water storage height, and the water injection speed. It is appropriately determined according to the set water storage height of the bowl 11 and the like.

(7) When it is determined that the time t4 has elapsed since the first electromagnetic on-off valve 13d was closed in the control unit of the control device 15, the negative pressure pump 3 is based on the 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, the toilet booth 41 and the living space 42 near the bed 43 are selected as necessary, and the mobile toilet 1 is used as a flush toilet at each position. can do. That is, 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 the caregiver can perform the work of dumping the excrement of the bowl into the flush toilet and the work of cleaning the bowl. There is no need to do it, and the burden of nursing and long-term care can be reduced.

(2) Two locations, a toilet booth 41 and a living space 42, can be selected as the installation position of the mobile toilet bowl 1. For example, when the toilet booth 41 is healthy or can be walked with light assistance, the mobile toilet bowl 1 is permanently installed in the toilet booth 41. If the toilet is used as a normal flush toilet and becomes older, or if it is difficult to move to the toilet booth 41 due to obstacles that make it difficult to walk with light assistance, move the mobile toilet 1 to the living space 42. You can use the toilet at the bedside.

(3) Since the sewage in the sewage pipe 2 is discharged to the sewage pipe line 5 and at the same time the odor in and near the bowl 11 is discharged to the sewage pipe line 5, the offensive odor of excrement is less likely to leak into the room or the like. ..

(4) Since the negative pressure pump 3 is drained directly to the sewage pipe line 5, it is not necessary to install a tank or the like. Further, since the negative pressure pump 3 is arranged in the living room, sewage can be discharged by using the sewage pipe line 5 installed in the building in advance.

(5) When the drainage is completed, the inside of the sewage pipe 2 is empty and the negative pressure pump 3 is a liquid-sealed type. Therefore, when the mobile toilet bowl 1 is reconnected, the sewage pipe line 5 is used. 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 odor on the side.

(6) Since the negative pressure pump 3 includes the cutter 34, the 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 in the bowl 11 can be prevented as much as possible. ..

The position where the end of the first branch pipe 13 m is arranged is not particularly limited and may be open to the atmosphere. Further, the position where the end portion of the second branch pipe 13n is arranged is not particularly limited, and it is sufficient that the odor generated by the mobile toilet bowl 1 can be sucked. Therefore, it may be other than the position facing the bowl 11.

<B. Second Embodiment>
Next, a second embodiment of the flush toilet system according to the present invention will be described with reference to the drawings. The second embodiment differs from the first embodiment in the mechanism of the valve mechanism, and the others are mainly the same. Therefore, the same components may be designated by the same reference numerals and the description thereof may be omitted.

<1. Overview of valve mechanism>
FIG. 10 is a schematic explanatory view of the 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 portion of the cylinder portion 13h and the discharge pipe portion 13j and communicating them. The first communication pipe 13r is provided with a first check valve 13s on the discharge pipe portion 13j side and a fourth electromagnetic on-off valve (first on-off valve) 13t on the cylinder portion 13h side. There is. By the second check valve 13y, air flows through the first communication pipe 13r only from the cylinder portion 13h side to the discharge pipe portion 13j.

Further, a second communication pipe 13v is provided which connects the cylinder portion 13h and the fourth electromagnetic on-off valve 13t, and between the first check valve 13s and the second check valve 13y. A 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 open to the atmosphere as in the case of the first branch pipe 13m of the first embodiment. Further, 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. By the second check valve 13y, air flows through the second communication pipe 13v only from the discharge pipe portion 13j side to the cylinder portion 13h side.

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

(1) When the user finishes the stool and the user or the caregiver presses the switch of the remote controller 19, the water injection channel electromagnetic on-off valve 14c is opened, and the water injection port 14a is used to wash the inside of the bowl 11 with water for cleaning. 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 in the closed state. In the following description, the time when the remote controller 19 is operated and the water injection channel electromagnetic on-off valve 14c is opened will be set to 0.

(2) When the control unit of the control device 15 determines that the time t6 has elapsed, as shown in FIG. 11, the fifth electromagnetic on-off valve 13x is closed and the fourth electromagnetic on-off valve 13t is open. It becomes. As a result, the air inside the cylinder portion 13h is sucked into 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 portion 13h side of the second communication pipe 13v, the air in the cylinder portion 13h does not flow into the second communication pipe 13v. In this way, since the inside of the cylinder portion 13h is depressurized, the valve body 13b is pulled up above the cylinder portion 13h against the urging force of the spring 13k. Then, at time t7 after a short time (for example, about 1 to 5 seconds) has elapsed from time t6, the water injection channel electromagnetic on-off 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 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 the start of drainage to the time when the sewage is sufficiently sucked into the sewage pipe 2 side has elapsed, the control unit of the control device 15 controls. The signal causes the water injection channel electromagnetic on-off valve 14c to be opened again. As a result, water is stored in the bowl 11 after the sewage is discharged.

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 urging force of the spring 13k. The valve body 13b moves so as to close the drainage channel 12. As a result, the suction of the water stored in the bowl 11 to the sewage pipe 2 side is stopped.

Further, by opening the fifth electromagnetic on-off valve 13x, the odor around the mobile toilet bowl 1 passes through the third branch pipe 13w, the second communication pipe 13v, and the first communication pipe 13r, and is sucked into the sewage pipe 2. Will be done. Then, 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) After that, at the time t9 after a short time (for example, about 1 to 5 seconds) elapses from the time t8, the fourth electromagnetic on-off valve 13t is closed. As a result, the air from the third branch pipe 13w due to the atmospheric pressure flows only to the cylinder portion 13h side. In this way, after the water supply to the bowl 11 and the suction of the odor are performed for a certain period of time, the water injection channel electromagnetic on-off valve 14c is closed after the time t10 to stop the water supply, and the negative pressure pump 3 is stopped after the time t11. Then, 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 becomes easier as compared with the first embodiment. Further, the pressure inside the cylinder portion 13h can be increased to atmospheric pressure only by the third branch pipe 13w, and the odor can be sucked. Therefore, the number of branch pipes can be reduced as compared with the first embodiment. The position where the end of the third branch pipe 13w is arranged is not particularly limited as long as it is open to the atmosphere and the odor generated by the mobile toilet bowl 1 can be sucked. Therefore, it may be arranged at a position facing the bowl 11 as in the first embodiment, or it may be in the vicinity of the valve mechanism 13.

<C. Modification example>
Although one embodiment of the present invention has been described above, the present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention. Hereinafter, a modified example will be described. However, the following modifications can be combined as appropriate.

<1>
In the above embodiment, the number of connection ports 22 and 23 is two, but in the case of a multi-bed room, three or more connection ports may be provided depending on the number of beds to be installed. For example, as shown in FIG. 14, a branch pipe 21a can be provided from the pipe main body 21 passing through the third wall, and a connection port can be provided in the branch pipe 21a. The branch pipe 21a 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 21a passing through the fourth wall 404.

Further, in the above embodiment, the piping main body 21 is arranged inside the wall, but is not particularly limited. That is, the pipe main body 21 and the branch pipe 21a can be arranged in the living space 42 and covered with a decorative cover. When arranging the pipe in the living space 42, it can be arranged along the wall, the floor, or the ceiling. Further, the piping main body 21 can be arranged along the outer wall of the building. Similarly, the water taps 6 may be provided in a plurality of places instead of one place. In this case, water taps can be provided in the vicinity of the plurality of connection ports.

<2>
In the above embodiment, the negative pressure pump 3 is arranged in the living room 4 (including the inside of the wall), and the negative pressure pump 3 is connected to the sewage pipe line 5 such as a building drainage pipe. However, the negative pressure pump 3 can be arranged inside a building other than the living room 4 or outside the building. Then, the negative pressure pump 3 can be connected to the sewage pipe line 5. Further, the mobile toilet bowls 1 of the plurality of living rooms 4 can be connected to one negative pressure pump 3.

<3>
It is also possible to connect the mobile toilet bowl 1 and the negative pressure pump 3 without using the sewage pipe line 5 of the building. This point will be described with reference to FIG.

In the example shown in FIG. 15, the above-mentioned mobile toilet bowl 1 is arranged in the living room 4 on the first floor and the second floor of the building. The flexible hose 12a of each mobile toilet bowl 1 is detachably connected to a connection port 22 provided on the wall of each living room 4. Then, 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 sewer pipe of a building, but a dedicated drainage pipe for the mobile toilet bowl 1. The drainage vertical pipe 55 is connected to a negative pressure pump 3 arranged outside the building, and stool is discharged to a sewage mass through a pipe extending from the negative pressure pump 3.

In the above embodiment, since the negative pressure pump 3 is arranged in each living room 4, the negative pressure pump 3 is driven by the remote controller 19 when the mobile toilet 1 drains water. However, in this example, the negative pressure pump 3 is driven by the remote controller 19. Since one negative pressure pump 3 is connected to the mobile toilet 1 in each living room 4, the inside of the piping main 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 channel electromagnetic on-off valve 14c in the mobile toilet bowl 1 and each electromagnetic on-off valve of the valve mechanism 13 are driven.

The position of the negative pressure pump 3 is not particularly limited, and may be inside a building outside the living room. Further, when the mobile toilet bowl 1 as described above is installed in all the living rooms 4 in the building, and the sewage pipe line previously installed in the building can be used as a dedicated pipe for the mobile toilet bowl 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 an 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 operates and the first electromagnetic on-off valve 13d is opened after the lapse of time t1, but the first electromagnetic on-off valve 13d is opened at the same time as the operation of the negative pressure pump 3. You may try to do it.

In each of the above embodiments, the first electromagnetic on-off valve 13d is opened by timer control, but 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. When the time comes, the first electromagnetic on-off valve 13d may be opened.

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

<7>
In each of the above embodiments, the first toilet bowl connection port 22 and the second toilet bowl connection 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. Although the valve structure is provided in which the valve is closed by the method, the flexible hose 14d and the toilet bowl connection ports 22 and 23 may be connected by a flange or a union connection. Further, in the case of a flange connection or a union connection structure, the unused toilet bowl connection port may be sealed with a closing flange, a cap, or the like.

<8>
In the above embodiment, the control device is wirelessly controlled by the remote controller 19, but an on / off switch for the negative pressure pump is provided on the handle 10d or the like 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. 2 and 3. That is, it is not particularly limited as long as it can suck sewage.

1 Mobile toilet 10 Toilet bowl 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 1st electromagnetic on-off valve 13e 2nd electromagnetic On-off valve 13f 3rd electromagnetic on-off valve 13g Check valve 13h Cylinder part 13i Suction pipe part 13j Discharge pipe part 13k Spring 13m 1st branch pipe 13n 2nd branch pipe 13p Drainage inlet 13q Drainage outlet 14 Water injection channel 14a Water injection port 14b Water supply port 14c Water injection channel Electromagnetic on-off valve 14d Flexible hose 14e Water faucet 15 Control device 15a Power cable 19 Remote controller 2 Sewage piping 21 Piping body 22 First toilet connection port 23 Second toilet connection port 3 Negative pressure pump 3a Negative pressure pump Main body 3b Suction side piping 3c Discharge side piping 31 Motor 32 Housing 33 Screw rotor 34 Cutter 4 Living room 41 Toilet booth 42 Living space 5 Sewage piping route

Claims (5)

A flush toilet that can be connected to a negative pressure pump
A bowl with an outlet and
A water injection channel that supplies wash water to the bowl and
A valve mechanism connected to the negative pressure pump and for discharging the water stored in the bowl from the discharge port,
A control unit that controls the opening and closing of the valve mechanism, and
With
The valve mechanism
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.
A cylinder portion that houses the valve body and
The urging means for urging the valve body so that the discharge path is closed, and
A communication pipe that connects the cylinder portion and the discharge side end of the discharge path, and
With
By driving the negative pressure pump, the cylinder portion is made negative pressure through the communication pipe, so that the valve body moves against the urging means and the discharge path is opened. Has been done
A branch pipe that is open above the water storage of the bowl is connected to the communication pipe.
A mobile flush toilet configured to suck the odor in the bowl through the branch pipe and the communication pipe by driving the negative pressure pump. A flush toilet that can be connected to a negative pressure pump
A bowl with an outlet and
A water injection channel that supplies wash water to the bowl and
A valve mechanism connected to the negative pressure pump and for discharging the water stored in the bowl from the discharge port,
A control unit that controls the opening and closing of the valve mechanism, and
With
The valve mechanism
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.
A cylinder portion that houses the valve body and
The urging means for urging the valve body so that the discharge path is closed, and
A first communication passage that connects the cylinder portion and the discharge side end of the discharge path, and
A first on-off valve provided in the middle of the first passage, and
In the first continuous passage, a second continuous passage that communicates between the first on-off valve and the cylinder portion, and between the first on-off valve and the discharge side end portion, and
A branch road provided in the second passage and having an end open to atmospheric pressure,
A second on-off valve provided in the middle of the branch path and
A first check valve that is arranged between the discharge side end side end of the second passage and the discharge side end portion and allows only air flow to the discharge side end portion side. ,
In the second continuous passage, a second check valve arranged on the cylinder portion side of the branch passage and allowing only air flow to the cylinder portion side.
A mobile flush toilet equipped with. The mobile flush toilet according to claim 2 , wherein the end of the branch road is opened so as to face the bowl so that odor can be sucked. The mobile flush toilet according to claim 2 or 3 , wherein the control unit controls driving of the negative pressure pump, opening / closing of the first and second on-off valves, and supply of flush water through the water injection channel. Negative pressure pump and
The sewage pipe connected to the negative pressure pump and
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.

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