Toilet unit

Abstract

To eliminate work for pump maintenance in a toilet unit.SOLUTION: A toilet unit includes a toilet bowl 12, a suction device 16 that sucks sewage from the toilet bowl 12, and a sewage tank 13 disposed under the suction device 16 and storing the sewage. The suction device 16 includes: a suction port 31 to which a drain pipe 25 is connected, the drain pipe extending from the toilet bowl 12; a temporary tank 32 capable of temporarily storing the sewage sucked from the suction port 31; a suction mechanism 33 that discharges gas in the temporary tank 32 to generate suctioning pressure; a discharge port 34 provided under the temporary tank 32; and a cover 35 openable / closable to seal the discharge port 34. The suction mechanism 33 is disposed higher than the suction port 31.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] This invention relates to a toilet unit.

Background Art

[0002] In a toilet unit used in a place without a sewer, the sewage after use is transferred from the toilet bowl to the sewage tank. If the sewage tank is directly below the toilet bowl, the sewage can be dropped directly, but then the odor will directly rise from the sewage tank. For this reason, a structure may be adopted in which a region that is constantly filled with water is formed below the toilet bowl, and after the pipe rises from that region once, it is connected to the sewage tank.

[0003] Due to such a piping structure, a certain amount of pressure must be applied to the sewage to make it flow. There is also a method of flowing it with a large amount of water, but the places where the toilet unit must be installed are often places without a water supply, and it is desirable to save the washing water used as much as possible.

[0004] On the other hand, in order to discharge the sewage from the toilet bowl while saving the water used, it is conceivable to suck it up with a pump. For example, in Patent Document 1, a water-saving toilet is proposed in which a pressure-feeding discharge mechanism unit 5 equipped with a discharge pump is provided to pressure-feed and discharge the sewage to be discharged (washing water + dirt), thereby reducing the amount of washing water used. Patent Document 2 also proposes drainage by a pump 24.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0006] However, when sewage is pumped up, the parts of the pump will come into direct contact with the sewage. Therefore, the pump is likely to malfunction as it is. Although it is conceivable to provide a filter so that the solid matter in the sewage does not come into contact with the parts of the pump, in that case, the filter is likely to become clogged, increasing the required frequency of maintenance. As a toilet unit that is often installed in remote areas, there is a problem that the operating cost increases.

[0007] Therefore, an object of the present invention is to provide a toilet unit that is less likely to malfunction and saves the trouble of maintenance.

Means for Solving the Problem

[0008] The present invention has a toilet bowl, a suction device that sucks sewage from the toilet bowl, a sewage tank that stores sewage provided below the suction device, and the suction device has a suction port to which a drain pipe extending from the toilet bowl is connected, a temporary tank that can temporarily store the sewage sucked from the suction port, a suction mechanism that discharges the gas in the temporary tank to generate a suction pressure, a discharge port provided below the temporary tank, and an openable and closable lid that can seal the discharge port, and the suction mechanism is arranged above the suction port, The toilet unit solves the above problems.

[0009] That is, if the suction mechanism is provided above the suction port, the sewage sucked from the suction port will not reach the suction mechanism unless the temporary tank is full. If the capacity of the temporary tank is ensured to be an amount sufficient to temporarily store the once-sucked sewage, the sewage will not reach the suction mechanism even if all the sewage generated in one use is sucked in. When the lid of the discharge port provided below the temporary tank is opened after all the necessary sewage has been sucked up, the sewage can be transferred to the lower sewage tank without reaching the suction mechanism, so that the suction mechanism does not need to suck in the sewage. Therefore, in the toilet unit according to the present invention, maintenance such as providing a filter in the suction mechanism and replacing it becomes unnecessary, and the suction mechanism including easily breakable parts such as bearings is not immersed in sewage, so that the situation where the suction mechanism deteriorates due to sewage can be almost prevented.

[0010] In the toilet unit according to the present invention, the discharge port has a closing mechanism that biases the lid to close it, As an embodiment, the load applied by the closing mechanism can be adjusted such that when a predetermined amount of sewage is accumulated in the temporary tank, the lid is opened by the weight of the sewage. In this embodiment, during the suction of sewage, the biasing force by the closing mechanism and the suction force by the suction mechanism combine, so that even if more sewage is added, suction can continue for a while with the lid remaining closed. When a predetermined amount of sewage has accumulated in the temporary tank, if the load exceeding the biasing force by the closing mechanism and the suction force is applied and the lid is adjusted to be opened, the opening of the lid can be automatically performed in conjunction with the accumulation of sewage, and the transfer to the sewage tank can proceed smoothly. These operations can be performed without control by electronic time measurement or information from sensors. This is particularly desirable in a harsh installation environment where the opening and closing device is prone to errors.

[0011] Also, in the unit according to the present invention, as another embodiment, it has a control device that can control the opening and closing of the lid and the operation / stop of the suction mechanism, The control device closes the lid, operates the suction mechanism to suck the sewage from the toilet, and after sucking up all the sewage from the drain pipe, stops the suction mechanism. Simultaneously with or after this stop, the lid is opened to let the sewage stored in the temporary tank fall into the sewage tank. An embodiment can be adopted. In this embodiment, the opening and closing of the lid are timed by the control device. The suction and dropping of the sewage into the temporary tank can be executed at reliable timings. It is preferable that the cost of the control device is acceptable and the environment where the control device is less likely to cause errors.

[0012] Furthermore, this invention comprises a toilet, a suction device that sucks sewage from the toilet, a sewage tank provided below the suction device for storing sewage, and the suction device has a suction port to which a drain pipe extending from the toilet is connected, a temporary tank that can temporarily store the sewage sucked from the suction port, a suction mechanism that discharges the gas in the temporary tank to generate a suction pressure, a discharge port provided on the side surface of the temporary tank, and an openable and closable lid that can seal the discharge port, and the inside of the temporary tank has an inclined portion that slopes downward toward the discharge port, the suction mechanism is arranged above the suction port, The toilet unit also solves the above problems.

[0013] That is, in this further invention, by providing the discharge port on the side surface of the temporary tank and adopting a structure in which the sewage is guided to the discharge port by the inclined portion, the force applied to the lid of the discharge port by the weight of the sewage is reduced compared to the above-described form in which the discharge port is provided below the temporary tank. As a result, the force required to hang on the lid for sealing can also be reduced. Therefore, even without a closing mechanism or a control device that biases the lid, the discharge port can be sufficiently sealed only by the negative pressure of the suction mechanism. When the suction stops, the lid is pushed open by the pressure on the discharge port generated by the inclined portion, and the sewage can be automatically discharged.

[0014] Also, in the above further invention, a form can be adopted in which a hinge that attaches the lid to the outer peripheral surface of the suction device so as to be openable and closable is provided above the lid. Due to the hinge, if no load is applied to the lid or the force attracting the lid is greater than the force trying to open the lid, the lid remains closed, and the lid automatically opens only when the force trying to open the lid exceeds it.

[0015] Furthermore, in the above further invention, a form can be adopted in which a packing that surrounds the discharge port and improves the adhesion to the lid is provided on the lid side of the discharge port. By providing the packing, the sealing performance during suction can be improved, and the suction force can be increased.

[0016] These inventions further the sewage tank is provided side by side with the toilet, A configuration having a flexible water bag installed in the sewage tank and a pump for pumping up the washing water filled in the washing water bag can be adopted. If the sewage tank is to be placed below the toilet, the height of the floor surface where the toilet is located has to be raised, making it difficult to achieve a barrier-free configuration. Therefore, if the sewage tank is provided not below the toilet but beside the toilet, that is, installed at the same height as the toilet or a height close to it, the installation height of the toilet can be lowered, making it easier to design a barrier-free toilet. On the other hand, since it can be sucked up by the suction force of the suction mechanism, it can be used even if the sewage tank is placed higher than the toilet. By exerting only the force to suck into the temporary tank by the above suction mechanism, even if the inlet of the sewage tank is at a position higher than the toilet, it can be sucked up with sufficient pressure for operation.

[0017] And in a toilet unit that stores both washing water and sewage, at the stage of starting use with the washing water filled, a space for storing the sewage after using the washing water is secured in the sewage tank. Unless replenished, the remaining amount of washing water decreases with use, and accordingly, sewage accumulates in the sewage tank, so gradually the volume occupied by sewage in the sewage tank increases. Although there are some fluctuations due to the volume occupied by the dirt itself, the decrease in the amount of washing water and the increase in the amount of sewage in the sewage tank are in a substantially corresponding relationship. This invention utilizes this fact. Instead of filling a tank with a fixed shape with washing water, if the washing water is put into a flexible bag installed in the sewage tank, the space in the sewage tank that is initially surplus space can be utilized as a space for putting washing water. As the utilization progresses, the amount of washing water remaining in the washing water bag decreases, and at the same time, it is pushed by the sewage introduced and increased in the sewage tank, and the volume of the washing water bag becomes smaller. That is, the space for securing washing water and the space for storing sewage are shared, and the volume can be utilized seamlessly according to the increase and decrease. In addition to the sewage tank provided beside the toilet instead of under the toilet for barrier-free reasons, if an additional tank for washing water is to be provided separately, more space must be secured in the toilet unit. However, by storing the washing water in the washing water bag provided in the sewage tank, the space required for the tank for washing water can be saved, so the two effects of barrier-free configuration and space saving can coexist.

[0018] In the configuration having the above-described washing water bag, the pipe through which the washing water from the pump passes is drawn out from the mouth of the washing water bag and connected to the toilet. An embodiment can be selected in which the drain pipe through which the sewage from the toilet passes is connected to a location other than the mouth of the washing water bag in the sewage tank.

[0019] Using the toilet unit of this invention, the toilet can be washed with the washing water drawn out from the washing water bag provided in the sewage tank installed beside the toilet instead of under the toilet, and the sewage sucked up from the toilet can be introduced into the sewage tank in a part other than the washing water bag. An operation method of the toilet unit can be realized.

Advantages of the Invention

[0020] The toilet unit according to this invention can be operated at low cost as a water-saving toilet unit that saves the trouble of maintenance. In addition, since it can suck up sewage from the toilet bowl and store it in the sewage tank, it can be installed at the same height as the toilet bowl instead of placing the sewage tank under the toilet bowl, and it can be easily operated as a barrier-free toilet unit.

Brief Description of the Drawings

[0021]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Modes for Carrying Out the Invention

[0022] Hereinafter, this invention will be described with specific embodiments. First, regarding the first embodiment, a side cross-sectional view of the toilet unit 11 is shown in FIG. 1.

[0023] The toilet unit 11 according to this embodiment is provided with a toilet bowl 12. Although the figure describes an embodiment with one Western-style toilet bowl, it may also be a Japanese-style toilet bowl or a urinal for men. Also, it is not limited to one, and two or more toilet bowls 12 may be provided. However, in order to most suitably exhibit the effect of minimizing the space of this invention, it is most effective that the toilet unit 11 has only one Western-style toilet bowl or Japanese-style toilet bowl.

[0024] The toilet unit 11 has a sewage tank 13. In this embodiment, it is installed side by side with the toilet bowl 12 at the same height as the toilet bowl 12 on the floor having the toilet bowl 12. Note that it is not limited to this, and it may be installed in a section different from the room where the toilet bowl 12 is located. However, in this invention, since there is a suction device 16 that can lift sewage, the installation location of the sewage tank 13 is not limited to under the floor or below the ground of the floor where the toilet bowl 12 is located, and it can be installed at a free position. The sewage tank 13 itself is preferably made of resin or metal and can maintain its shape. Also, it naturally needs to have watertightness so that the sewage P itself does not leak to the outside.

[0025] The toilet unit 11 has a washing water bag 20 in the sewage tank 13. The washing water bag 20 is a flexible bag that is watertight and can store washing water C inside. It is necessary that the washing water C stored inside the washing water bag 20 does not mix with the sewage P dropped into the sewage tank 13 outside the washing water bag 20. Specifically, a bag made of a resin sheet such as rubber can be used as the washing water bag 20. If it is too thin, it may be torn due to water pressure or other reasons, so durability that does not tear in normal use is required. Depending on the resin used, it is desirable that the thickness of the sheet is 0.5 mm or more. On the other hand, if the sheet is too thick, there is a possibility that the internal space will remain maintained even when the internal washing water decreases, so the thickness is preferably 5 mm or less.

[0026] The toilet unit 11 has a pump 21 that generates pressure to pump up the washing water C in the washing water bag 20 and send it from the pipe 22 to the nozzle 23 in the toilet 12. In the embodiment of FIG. 1, the pump 21 is provided above the sewage tank 13, and a water intake pipe 21a extending downward from the pump 21 is inserted into the washing water bag 20 to pump up the washing water C stored in the washing water bag 20. The installation form of the pump 21 is not limited to this, and any form that can apply pressure to the water in the washing water bag 20 and send it to the pipe 22 is acceptable. For example, a pump 21 installed submerged in the water may be installed in the washing water bag 20, and the water may be pumped up from there to outside the washing water bag 20 and sent to the pipe 22.

[0027] The sewage tank 13 has a washing water outlet 15 on its upper surface that can open upward and fix the mouth 20a of the washing water bag 20. In the embodiment of FIG. 1, the pump 21 is placed above this washing water outlet 15, and the water intake pipe 21a is inserted into the washing water bag 20 through the washing water outlet 15. The pipe 22 extending from the pump 21 is connected to the toilet 12, and the introduced washing water C is ejected from the nozzle 23 in the toilet 12. A valve is provided in the pipe 22, and the washing water C is ejected from the nozzle 23 only when operated when necessary. However, those valves, operating parts, etc. are omitted here.

[0028] Water (or sewage P) is stored in the toilet 12. The lower part of the toilet 12 is connected to the drain pipe 25. Although not shown, a check valve for preventing backflow may be provided at the drain pipe 25 or its connection part. The drain pipe 25 passes through a position higher than the water surface in the toilet 12 once or reaches a position higher than the water surface in the toilet 12 in order to maintain the water surface in the toilet 12. The tip of the drain pipe 25 is connected to the suction port 31 of the suction device 16. The suction device 16 is driven in combination with the ejection of the washing water C from the nozzle 23 to suck the sewage P from the toilet 12.

[0029] An example of the structure of the suction device 16 is shown in the cross-sectional view of FIG. 2. The suction device 16 includes a suction port 31 to which a drain pipe 25 extending from the toilet 12 is connected, a temporary tank 32 that can temporarily store the sewage P sucked from the suction port 31, a suction mechanism 33 that discharges the gas in the temporary tank 32 to generate a suction pressure, a discharge port 34 provided below the temporary tank 32, and an openable and closable lid 35 that can seal the discharge port 34.

[0030] The suction port 31 is sealed and connected to the drain pipe 25 so that there is no gap through which air can leak. This is to prevent the suction pressure generated by the suction mechanism 33 from decreasing.

[0031] The temporary tank 32 has a temporary storage capacity larger than the amount of flushing water C used for one operation of the toilet 12. Specifically, it is assumed to be added to the amount of flushing water C used for one operation It has a temporary storage capacity larger than the capacity obtained by adding the amount of dirt for one operation. This is because it is necessary to be able to temporarily store the dirt for one operation, which is a combination of the flushing water C and the dirt. Here, the temporary storage capacity of the temporary tank 32 is the capacity located below the lower edge 31a of the suction port 31. If the water level rises above the lower edge 31a of the suction port 31, there is a risk of backflow from the suction port 31 to the toilet 12. Therefore, the space above the edge 31a is not useful for temporary storage until it is introduced into the discharge port 34. In addition, since the amount stored for each use is discharged from the discharge port 34 described later, it is not necessary to ensure a temporary storage capacity exceeding the amount used for two operations.

[0032] The suction mechanism 33 discharges the gas in the temporary tank 32. As a specific configuration, it includes a motor 51, a rotating shaft 54 connected to the motor 51, fans 52 and 53 installed around the rotating shaft 54, a suction chamber 55 for housing the fans 52 and 53, and a discharge port 56 for discharging the gas. The configuration of the fans 52 and 53 housed in the suction chamber 55 is not particularly limited. However, if there is only a single fan, air may flow in reverse through the gaps, making it easy for the suction force to be insufficient. Therefore, it is desirable to adopt a highly sealed fan, such as a combination of a rotating fan 53 and a fixed fan 52 as illustrated in the developed view of Fig. 2(b). The suction mechanism 33 is not limited to the illustrated form, and is not particularly limited as long as it can generate a suction pressure sufficient for vacuum suction.

[0033] However, the suction mechanism 33 needs to be arranged above the suction port 31. Being above means that the lowermost position of the portion of the suction mechanism 33 that sucks in the gas is above the position of the lower edge 31a of the suction port 31. By arranging it in this way, it is possible to substantially prevent the dirty water P sucked in from the suction port 31 from being sucked into the suction mechanism 33. More preferably, the lowermost position of the portion of the suction mechanism 33 that sucks in the gas is above the position of the upper edge 31b of the suction port 31. In the embodiment of Fig. 2, the entire suction mechanism 33 is arranged above the position of the upper edge 31b of the suction port 31.

[0034] By arranging the suction mechanism 33 above the suction port 31 in this way, the suction mechanism 33 does not need to suck in the dirty water P, so there is no need to install a filter or the like to prevent the fans 52 and 53 and the motor 51 of the suction mechanism 33 from getting dirty. As a result, regular filter cleaning maintenance is not required, and it is also possible to prevent the suction pressure from being reduced due to the presence of the filter, and the toilet unit can be operated with stable output.

[0035] The discharge outlet 34 is provided below the temporary tank 32, and is used to introduce the wastewater P temporarily stored in the temporary tank 32 into the wastewater tank 13. Below the temporary tank 32 means a position where the wastewater P at the bottom of the temporary tank 32 can also be discharged. In other words, the discharge outlet 34 does not necessarily have to be on the bottom surface of the tank, and may be provided near the bottom of the side surface. However, if the discharge outlet is provided on the bottom surface, the wastewater P is less likely to remain, making operation easier.

[0036] The lid 35 provided on the discharge port 34 can close the discharge port 34 by sealing it, or can also be opened. Here, sealing means that when the lid 35 is closed, the sewage P does not fall into the sewage tank 13, and the lid 35 is airtight and watertight enough to temporarily hold the sewage P in the tank 32, and it is acceptable for the sewage P to leak to the extent that most of it remains, although some of it falls. However, it is desirable for the lid 35 to be airtight and watertight.

[0037] Examples of mechanisms for closing the lid 35 include a first embodiment in which a closing mechanism 36 that uses physical weight is provided, and a second embodiment in which an opening / closing device 41 that is electrically driven by a motor or the like in response to instructions from a control device 45 is provided.

[0038] FIG. 2(a) illustrates a first embodiment in which a closing mechanism 36 is provided. A closing mechanism 36 having a predetermined mass is attached to the opposite side of the shaft 37 from the lid 35, and applies a load to urge the lid 35 to close. The load applied by the closing mechanism 36 is adjusted so that the lid 35 is closed when there is no force applied from inside the lid 35, and the lid 35 is opened by the weight of the sewage P when a predetermined amount of sewage P has accumulated in the temporary tank 32. Here, the predetermined amount can be adjusted to some extent, but it is preferable to adjust it appropriately within the range of the amount of flush water C for one flush of the toilet bowl 12 or the amount obtained by adding the expected amount of sewage to the amount of flush water C. By making such appropriate adjustments, the lid 35 can be automatically closed and opened at the required timing according to the change in the amount of sewage P appropriately sucked in by the suction mechanism 33 from the toilet bowl 12 without providing an electronic control mechanism to the closing mechanism 36.

[0039] An example of the procedure for closing and opening the lid by this closing mechanism 36 will be described with reference to Fig. 3. The state immediately after using the toilet 12 is shown in Fig. 3(a). In accordance with an instruction to operate a predetermined switch, button, etc. provided in the toilet unit 11, the pump 21 is driven to discharge the washing water C from the nozzle 23. At this stage, the lid 35 is closed by the load applied by the closing mechanism 36. Simultaneously with the start of washing by the discharge of the washing water C or subsequent to the washing, when the suction mechanism 33 of the suction device 16 is driven, since the lid 35 is closed, as the gas in the temporary tank 32 is discharged, a suction pressure is generated to suck up the sewage P in the drain pipe 25. Thereby, the sewage P in the toilet 12 is discharged (Fig. 3(b)). When the suction pressure continues, the sewage P in the drain pipe 25 reaches the temporary tank 32 and is temporarily stored (Fig. 3(c)). At this point, the load applied to the lid 35 may be reduced by the suction pressure that also sucks up the stored sewage P and is not so large as to exceed the load applied to close it by the closing mechanism 36, so the lid 35 remains closed while the suction pressure continues. When the sewage P is completely sucked up (Fig. 3(d), since the drain pipe 25 is not closed, even if the suction mechanism 33 is movable, the sewage P is no longer sucked up, and the entire load of the sewage P is applied to the lid 35. At this point, it is possible to stop the suction mechanism 33. The desirable timing for stopping the suction mechanism 33 is the timing when the sewage P in the drain pipe 25 is completely sucked up, so it can be roughly obtained from the internal capacity of the drain pipe 25 and the output of the suction mechanism 33, and it is advisable to control it with a timer. On the other hand, since the load applied by the closing mechanism 36 is adjusted to be smaller than the total load of the sewage P at this stage, the lid 35 cannot be completely closed and is opened. Once it is opened, due to the momentum of the sewage P, even with the load of the closing mechanism 36, the sewage P drops to the sewage tank 13 to some extent (Fig. 3(e)). Furthermore, a mechanical mechanism may be provided such that it takes time for the once-opened lid 35 to return.

[0040] In this way, the cleaning water C is sucked up from the cleaning water bag 20 provided in the sewage tank 13, and at the same time, the sewage P accumulates outside the cleaning water bag 20 in the sewage tank 13. The toilet 12 can be cleaned using the cleaning water C drawn out from the cleaning water bag 20, and the sewage can be introduced into the sewage tank 13 other than the cleaning water bag 20. By this operation method, it is possible to operate with the occupied space of only one sewage tank 13 while separating the occupied areas of the cleaning water C and the sewage P. The process of this operation is shown in FIGS. 4(a) to 4(c). The initial state is shown in FIG. 4(a). In the initial state, all the sewage P in the sewage tank 13 has been pumped out or is in an empty state. On the other hand, the cleaning water bag 20 provided in the sewage tank 13 is filled with the cleaning water C.

[0041] As use progresses, it becomes as shown in FIG. 4(b). The cleaning water C in the cleaning water bag 20 decreases, and the cleaning water bag 20 bends and its volume decreases. On the other hand, the sewage P accumulates outside the cleaning water bag 20. The situation at the usage limit is shown in FIG. 4(c). The cleaning water C in the cleaning water bag 20 is almost gone, and the cleaning water bag 20 has bent and its internal volume is almost gone. On the other hand, the outside of the cleaning water bag 20 is filled with the sewage P. When this happens, it becomes necessary to pump out the sewage P and replenish the cleaning water C. To detect this, it is advisable to attach a water level sensor (not shown) outside the cleaning water bag 20 in the sewage tank 13. When the water level sensor detects that the sewage P has reached a predetermined capacity or more, it notifies a management organization located remotely of this fact by means of communication means (not shown). As the communication means, general methods such as a fixed telephone line, a mobile telephone line, or other wireless means can be selected.

[0042] Next, as a second embodiment, an embodiment in which the opening and closing of the lid 35 and the operation / stop of the suction mechanism 33 are controlled by the opening and closing device 41 will be described. A block diagram of the mechanism for controlling the entire toilet unit that executes this embodiment is shown in FIG. 5. The pump 21, the suction mechanism 33, and the opening and closing device 41 that opens and closes the lid 35 are electrically connected to one control device 45. Also connected is a button 42 that a user who has used the toilet 12 presses as an instruction for cleaning.

[0043] When the button 42 is pressed, the control device 45 drives the pump 21 to supply the cleaning water C to the toilet 12 to clean the toilet 12. Simultaneously with the start of this cleaning, or at a point in time after a predetermined time has elapsed, or from the initial state stage, the control device 45 gives an instruction to the opening / closing device 41 to close the lid 35 and keeps the lid 35 closed. Then, the control device 45 operates the suction mechanism 33 (corresponding to the state in Fig. 3(b)), and sucks the sewage P from the toilet 12 through the drain pipe 25 into the temporary tank 32 of the suction device 16. The operation of this suction mechanism 33 continues until the sewage P in the drain pipe 25 is completely sucked in with the lid 35 closed (corresponding to the state in Fig. 3(d)). The time until this is completely sucked in may be calculated in advance from the capacity of the drain pipe 25 and the suction capacity of the suction mechanism 33 and recorded in the control device 45. Note that there may also be a form of control in which a sensor or the like is provided in the temporary tank 32 instead of time control, but from the viewpoint of saving the labor of maintenance because the sensor needs to be cleaned, time control is more preferable. Simultaneously with or after the stop of the suction mechanism 33, the control device 45 gives an instruction to the opening / closing device 41 to open the lid 35. As a result, the sewage P stored in the temporary tank 32 drops into the sewage tank 13 (corresponding to the state in Fig. 3(e)).

[0044] Note that the control device 45 may also be connected to the above-mentioned water level sensor and communication means and be in charge of the above-mentioned notification.

[0045] In this embodiment, the sewage tank 13 has a sewage suction port 14 on the upper surface for pumping up when the sewage P accumulates, separately from the cleaning water outlet 15. A lid is similarly attached to the sewage suction port 14. Note that the suction device 16 may be attached above the sewage suction port 14.

[0046] Furthermore, a third embodiment in which the shapes of the lid and the discharge port are different will be described with reference to FIG. 6. The basic structure of the suction device 16a in this embodiment is the same as that of the suction device 16 in the above embodiment. A cross-sectional view showing the overall appearance is shown in FIG. 6(a). The structure of the suction mechanism 33 can be the same. The part related to the discharge of the sewage P is different. The discharge port 61 is provided on the side surface rather than below the temporary tank 32 included in the suction device 16a. Below the discharge port 61, the sewage suction port 14 of the sewage tank 13a is arranged to also serve as an inlet. At the bottom of the temporary tank 32, an inclined portion 65 is provided that slopes downward toward the discharge port 61 (FIG. 6(b)). Thereby, the force due to the weight of the sewage P is reduced by the inclination and directed toward the discharge port 61. The angle of this inclination depends on the design, but for example, when it is about 3 degrees or more and 30 degrees or less, the effect of dispersing the weight can generally be obtained effectively.

[0047] On the outer peripheral surface side of the discharge port 61, a lid 63 that opens and closes as shown in FIGS. 6(c) and 6(d) is attached. On the upper side of the lid 63, a hinge 64 is provided that allows the lid 63 to rotate with respect to the outer peripheral surface of the suction device 16a to be opened and closed. Due to the load of the lid 63, the hinge 64 closes the discharge port 61 as shown in FIG. 6(a) when no force is applied. Also, when the suction mechanism 33 is operating, it exhibits a sealing property to adhere to the discharge port 61 and prevent the sewage P from leaking.

[0048] On the outer peripheral side surface of the discharge port 61, a packing 62 that surrounds the discharge port 61 is attached. The packing 62 is made of an elastic body such as rubber and can improve the sealing property to seal during the operation of the suction mechanism 33 and prevent air and sewage P from leaking.

[0049] That is, when the toilet unit according to this third embodiment sucks the sewage P from the toilet bowl 12, the suction mechanism 33 operates to create a negative pressure in the temporary tank 32, and the lid 63 adheres tightly to the packing 62 surrounding the discharge port 61 and is sealed. As a result, the sealing performance of the temporary tank 32 is ensured, and the sewage P is sucked up from the toilet bowl 12. The sucked-up sewage P flows down along the inclined portion 65 toward the discharge port 61. However, since the discharge port 61 is provided on the side surface, only a part of the weight of the sewage P, which is reduced by the angle of the inclined portion 65, is applied. As a result, the lid 63 pressed against the discharge port 61 by the negative pressure of the suction mechanism 33 remains closed without being opened by the pressure of the sewage P. Thereby, the sealing performance during sucking up the sewage P from the toilet bowl 12 can be continuously ensured. When the suction mechanism 33 stops at the timing when the sucking up of the sewage P is completed, the lid 63 is pushed open from the inside by the weight of the sewage P reduced by the angle of the inclined portion 65, and the sewage P falls into the sewage tank 13a.

[0050] In this third embodiment, it is not necessary to dispose the sewage tank 13a directly below, and the degree of freedom of arrangement is increased. A sewage tank 13a may be installed at another location where a pipe such as a bellows hose is provided and connected below the discharge port 61. As a result, in this third embodiment, the sewage tank 13a and other parts can be separately installed and managed, and the maintainability is high.

[0051] The sewage tank 13a has the same configuration as the above-described sewage tank 13 and includes a washing water bag 20 and a pump 21, and a structure that can be used while exchanging the occupied volumes of the washing water and the sewage can be selected. However, in this form, the sewage suction port 14 can also serve as an inlet for sewage from the discharge port 61, and the structure can be simplified. Further, the pump 21 for sucking up the washing water may be in a form as shown in FIG. 6 in which it is immersed in the washing water inside the washing water bag 20 instead of outside the sewage tank 13a. Note that such a form in which the pump 21 is immersed in the washing water may also be adopted in the first and second embodiments. Further, the elements related to the washing water including the washing water bag 20 and the pump 21 are not essential in the toilet unit according to this invention, and a configuration in which tap water is directly connected and used as washing water for the toilet bowl may be adopted separately.

Description of Symbols

[0052] 11 Toilet unit 12 Toilet 13, 13a Sewage tank 14 Sewage suction port 15 Wash water outlet 16, 16a Suction device 20 Wash water bag 20a Mouth 21 Pump 21a Water intake pipe 22 Pipe 23 Nozzle 25 Drain pipe 31 Suction port 31a Lower edge 31b Upper edge 32 Temporary tank 33 Suction mechanism 34 Discharge port 35 Lid 36 Closing mechanism 41 Opening and closing device 42 Button 45 Control device 51 Motor 52 Fixed fan 53 Movable fan 54 Rotating shaft 55 Suction chamber 56 Discharge port 61 Discharge port 62 Packing 63 Lid 64 Hinge 65 Inclined part F Toilet floor P Sewage C Wash water

Claims

1. A toilet bowl (12); a suction device (16a) for sucking wastewater from the toilet bowl (12); a wastewater tank (13a) for storing wastewater provided below the suction device (16a); having The suction device (16a) A suction port (31) to which a drain pipe (25) extending from the toilet bowl (12) is connected; a temporary tank (32) capable of temporarily storing the wastewater sucked in through the suction port (31); a suction mechanism (33) for discharging gas from the temporary tank (32) to generate suction pressure; A discharge port (61) provided on the side of the temporary tank (32); an openable and closable lid (63) capable of sealing the exhaust port (61); having The temporary tank (32) has an inclined portion (65) that descends toward the discharge port (61) inside, The suction mechanism (33) is disposed above the suction port (31). Toilet unit.

2. The toilet unit according to claim 1, further comprising a hinge (64) on an upper side of the lid (63) for attaching the lid (63) to the outer peripheral surface of the suction device (16a) so as to be capable of opening and closing.

3. The toilet unit according to claim 1 or 2, further comprising a gasket (62) on the lid (63) side of the discharge outlet (61) for surrounding the discharge outlet (61) and improving adhesion to the lid (63).

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