JP5730625B2 - Cleaning tank device - Google Patents

Description

  The present invention relates to a cleaning tank apparatus.

  In siphon-type toilets, when the drainage valve of the washing tank is opened to wash the toilet bowl and the washing water in the washing tank is discharged, the accumulated water in the drainage trap part flows out to the downstream side at once due to the siphon phenomenon. After closing the drain valve, it is necessary to supply water to the drain trap part to prevent the seal water from running out. As means for preventing the seal water from running out, Patent Document 1 discloses a cleaning tank device in which a part of the water supplied from the ball tap is supplied to the overflow pipe as makeup water to the drain trap section. ing.

JP 2006-283355 A

Since the large tap cleaning time is longer than the small cleaning in the ball tap opening time, the amount of water supplied to the drain trap portion becomes excessive in the case of large cleaning, and the amount of water discharged unnecessarily increases. In addition, the water supply flow rate to the overflow pipe increases and decreases depending on the water supply pressure from the water tap to the ball tap, and the higher the water supply pressure, the more water is supplied to the drain trap part. The amount of water to be increased.
The present invention has been completed based on the above situation, and aims to save water.

As means for achieving the above object, the invention of claim 1 includes a washing tank for storing washing water, and a drainage channel for discharging the washing water in the washing tank to the toilet bowl connected to the drain trap part. An openable and closable drainage valve provided at the upstream end of the drainage channel, and communicates with the drainage channel via a water passage, and when the drainage valve is opened, the water pressure in the washing tank causes a washing water In a state where a part of the water storage part is designed to flow from the drainage channel through the water channel, and the flushing water in the washing tank is discharged to the toilet bowl side and the drainage valve is closed, wherein together keep the inflowing washing water is remaining in the water storage portion, e Bei and residual means for discharging the washing water in the water storage portion to the drainage path side after the drain valve is closed, the residual section, the drainage The water level in the reservoir at the time the valve is closed , Having characterized in that is configured to be slightly lower than or equal the water level of the washing tank.

The invention of claim 2 is provided at the upstream end of the drainage tank, the washing tank for storing the washing water, the drainage path for discharging the flushing water in the washing tank to the toilet bowl side connected to the drain trap part, and A drain valve that can be opened and closed is communicated with the drainage channel via a water passage, and when the drain valve is opened, a part of the washing water passes through the water passage from the drainage channel due to a water head pressure in the washing tank. A water storage part that flows in and the cleaning water in the cleaning tank is discharged to the toilet bowl side and the drain valve is closed to leave the cleaning water flowing into the water storage part. And a residual means for discharging the wash water in the water storage section to the drain path side after the drain valve is closed, and the residual means is the water flow path when the wash water flows into the water storage section. At the lower end of the drain valve And a form in which a throttle part is provided at a position lower than the downstream end of the water passage to allow the wash water in the water storage part to flow out to the drainage channel side at a lower flow rate than that at the time of inflow. It has a characteristic where it exists .

A third aspect of the invention is characterized in that, in the second aspect , the remaining means includes an opening adjusting means capable of adjusting an opening area of the throttle portion .

According to a fourth aspect of the invention, there is provided the method according to the second or third aspect , wherein the residual means includes a height adjusting means capable of adjusting a height of the downstream end of the water passage. Have

The invention according to claim 5 is provided at the upstream end of the drainage channel, the flushing tank for storing flushing water, the drainage channel for draining the flushing water in the flushing tank to the toilet bowl connected to the drainage trap part. A drain valve that can be opened and closed is communicated with the drainage channel via a water passage, and when the drain valve is opened, a part of the washing water passes through the water passage from the drainage channel due to a water head pressure in the washing tank. A water storage part that flows in and the cleaning water in the cleaning tank is discharged to the toilet bowl side and the drain valve is closed to leave the cleaning water flowing into the water storage part. And a remaining means for discharging the wash water in the water storage part to the drainage channel side after the drain valve is closed, the water storage part is disposed inside the cleaning tank, and the opening at the upper end is the Overflow in a form facing the cleaning tank Characterized in place which is provided with a tube.

The invention of claim 6 is provided at the upstream end of the drainage channel, the flushing tank for storing the flushing water, the drainage channel for draining the flushing water in the flushing tank to the toilet bowl connected to the drainage trap part. A drain valve that can be opened and closed is communicated with the drainage channel via a water passage, and when the drain valve is opened, a part of the washing water passes through the water passage from the drainage channel due to a water head pressure in the washing tank. A water storage part that flows in and the cleaning water in the cleaning tank is discharged to the toilet bowl side and the drain valve is closed to leave the cleaning water flowing into the water storage part. And a residual means for discharging the wash water in the water reservoir to the drain channel side after the drain valve is closed, and in the vicinity of the downstream end of the water passage when the wash water flows into the water reservoir Discharged from the downstream end of the water passage Purified water, where the guide plane for guiding to the water storage portion is provided with the features.

The invention of claim 7 is provided at the upstream end of the drainage tank, the drainage channel for storing the flushing water, the drainage channel for draining the flushing water in the flushing tank to the toilet bowl connected to the drainage trap part, A drain valve that can be opened and closed is communicated with the drainage channel via a water passage, and when the drain valve is opened, a part of the washing water passes through the water passage from the drainage channel due to a water head pressure in the washing tank. A water storage part that flows in and the cleaning water in the cleaning tank is discharged to the toilet bowl side and the drain valve is closed to leave the cleaning water flowing into the water storage part. And a residual means for discharging the wash water in the water storage part to the drainage channel side after the drain valve is closed, the upper surface of the water storage part being higher than the water level when the wash tank is full having the features in place that is open to the

According to an eighth aspect of the present invention, in the apparatus according to any one of the first to seventh aspects, the residual means has a discharge flow rate of washing water from the water storage section to the drainage channel side from the water passage to the water storage. It is characterized in that it is configured to be smaller than the flow rate of the washing water into the section .

<Invention of Claim 1>
When the drain valve is opened, the wash water in the wash tank starts to be discharged to the toilet bowl side, and a part of the wash water flows into the water reservoir due to the water head pressure in the wash tank. Thereafter, even if the drain valve is closed, at the time when the drain valve is closed, the washing water remains in the water storage portion by the remaining means. After the drain valve is closed, the wash water in the water storage section is discharged to the drain channel and replenished to the drain trap section.

  In the present invention, since the amount of cleaning water stored in the reservoir for replenishment to the drain trap unit is determined by the head pressure when the cleaning tank is full, the drain trap can be used for both large cleaning and small cleaning modes. The amount of makeup water to the part becomes constant. Further, the amount of cleaning water stored in the water storage section is not affected by the water supply pressure from the clean water to the cleaning tank. Therefore, it is possible to avoid supplying an excessive amount of washing water to the drain trap portion. Thereby, it is possible to save water by reducing the amount of water discharged from the drain trap part.

In addition, the amount of cleaning water remaining in the reservoir when the drain valve is closed is the amount of replenishment water to the drain trap after the valve is closed, but in the present invention, the water level of the reservoir when the valve is closed. Is made substantially constant, so that the amount of makeup water supplied to the drain trap portion does not needlessly increase.

<Invention of Claim 2 >
When the drain valve opens, the wash water flows into the water storage section through the water passage due to the head pressure of the wash tank, and after the water level in the wash tank and the water storage section reaches the same level, the wash water in the water passage is washed. It is discharged into the drainage channel while maintaining the same water level as the wash water in the tank. During this time, since the amount of water discharged to the drainage channel is reduced in the throttle portion, the cleaning liquid remains in the water reservoir until the drain valve is closed. Then, after the drain valve is closed, the wash water remaining in the water reservoir is discharged to the drain channel side.

According to the present invention, the maximum water level of the cleaning water remaining in the water reservoir is the same height as the downstream end of the water passage, and this height is affected by the large and small cleaning modes and the supply water pressure to the cleaning tank. It is constant. Therefore, the amount of cleaning water replenished to the drain trap portion can always be kept constant even if the large and small cleaning modes and the supply water pressure to the cleaning tank change.

<Invention of Claim 3>
By adjusting the opening area of the throttle part, the time required for replenishment to the drain trap part can be set appropriately.

<Invention of Claim 4 >
By adjusting the height of the downstream end of the water passage, the amount of washing water remaining in the water storage section when the drain valve is closed can be appropriately changed.

<Invention of Claim 5 >
Since the water storage unit also has the function of an overflow pipe, the internal structure of the cleaning tank can be simplified as compared with the case where the water storage part and the overflow pipe are provided separately.

<Invention of Claim 6 >
Since the wash water discharged from the downstream end of the water passage is guided to the water storage part side by the guide surface, the predetermined amount of wash water can surely flow into the water storage part.

<Invention of Claim 8>
Since the amount of washing water flowing into the reservoir is relatively large, a predetermined amount of washing water can be reliably left in the reservoir. In addition, since the amount of water discharged from the water storage section to the drainage channel is relatively small, it is possible to suppress the generation of abnormal noise due to the flow of cleaning water supplied to the drain trap section.

Sectional drawing showing the state in which the drain valve closed in the washing tank apparatus of Embodiment 1, and the inside of the washing tank is full Sectional view showing the state where the drainage valve is open and the wash water is flowing into the reservoir Sectional view showing the state where the water level in the washing tank and the water storage section are the same, and the inflow of cleaning water into the water storage section has been completed Immediately after the drain valve is closed, a cross-sectional view showing the state in which the wash water in the reservoir is discharged to the toilet bowl side Sectional drawing showing the state in which the drain valve closes and the inside of a washing tank is full in the washing tank apparatus of Embodiment 2. Sectional view showing the state where the drainage valve is open and the wash water is flowing into the reservoir Sectional view showing the state where the water level in the washing tank and the water storage section are the same, and the inflow of cleaning water into the water storage section has been completed Immediately after the drain valve is closed, a cross-sectional view showing the state in which the wash water in the reservoir is discharged to the toilet bowl side Sectional drawing showing the state which expanded the opening area of the throttle part and made the height of the downstream end of a water flow path low in the washing tank apparatus of Embodiment 3. Sectional drawing showing the state which narrowed the opening area of the throttle | throttle part and made the height of the downstream end of a water flow path high in the washing tank apparatus of Embodiment 3. Sectional drawing of the washing tank apparatus of Embodiment 4.

<Embodiment 1>
A first embodiment of the present invention will be described below with reference to FIGS. The cleaning tank apparatus Ta according to the first embodiment includes a cleaning tank 10, a drain valve 12, a drain path 16, and a replenishing means 20A.

<Washing tank 10>
The cleaning tank 10 includes a ball tap water supply valve 11 connected to clean water and a cleaning lever (not shown). When the water supply valve 11 is opened, the cleaning water W is supplied into the cleaning tank 10, and when the cleaning tank 10 rises to a predetermined water level, the water supply valve 11 is closed and the cleaning water W is supplied to the cleaning tank 10. Stops and the inside of the cleaning tank 10 becomes full. A drain valve 12 is provided on the bottom wall of the cleaning tank 10 so that the valve port 13 is opened and closed with a float 14 from above.

  When the float 14 is lifted by operating the washing lever, the drain valve 12 is opened, and the washing water W in the washing tank 10 is discharged to the toilet bowl 15 side. In the case of large washing, since the float 14 is lifted high and the time required for the drain valve 12 to open and close is long, the amount of drainage from the washing tank 10 to the toilet bowl 15 side is large, and the washing tank 10 The water level is greatly reduced. In the case of small washing, the lifting height of the float 14 is low and the valve opening time of the drain valve 12 is shorter than that of the large washing, so the amount of drainage to the toilet bowl 15 side is small and the water level drop in the washing tank 10 is small. .

<Drainage channel 16>
The drainage channel 16 is a channel for supplying the wash water W discharged from the drainage valve 12 to the toilet bowl 15. The drain valve 12 is disposed at the upstream end of the drain channel 16. The washing water W supplied to the toilet bowl 15 through the drainage channel 16 pushes the waste in the toilet bowl 15 to the downstream side, and the washed-off waste and washing water W pass through the drain trap part 17 connected to the toilet bowl 15. It passes through and is discharged into sewage. Since the supply flow rate of the wash water W to the toilet bowl 15 at the time of washing is large, the filth and the wash water W pass through the drain trap part 17 vigorously. Therefore, if the drain valve 12 is closed and the supply of the washing water W to the toilet bowl 15 is suddenly stopped, the amount of water to be stored in the drain trap part 17 is insufficient, and there is a possibility that the sealed water will run out. is there.

<Supplying means 20A>
As a means for preventing the sealing water from being cut off, the cleaning tank apparatus Ta of the first embodiment is provided with a replenishing means 20A for replenishing the drain trap part 17 with water for sealing water. The replenishing means 20A includes a water storage section 21A, a water passage 22A, and a residual means 30A.

<Water reservoir 21A>
The water storage unit 21 </ b> A has a bottomed cylindrical shape in which an upper surface is opened and a lower surface is closed by a bottom wall portion, and is disposed inside the cleaning tank 10. The upper surface of the water storage unit 21A is opened to a position higher than the water level when the cleaning tank 10 is full. In this water storage portion 21A, makeup water for replenishing the drain trap portion 17 after the drain valve 12 is closed is stored.

<Water passage 22A>
The water passage 22A includes a common flow path 23A, a communication path 24A, and a water conduit 25A. One end of the common flow path 23A is connected in a communicating state to a position near the valve port 13 (drainage valve 12) in the drainage channel 16 and lower than the bottom wall of the water storage part 21A. A lower end portion of an overflow pipe 26A provided in the cleaning tank 10 is connected to the other end portion of the common flow path 23A in a communicating state. One end of the communication path 24A is connected in communication with the other end of the common flow path 23A. Accordingly, the overflow pipe 26A and the communication path 24A are connected in a branched state at the other end of the common flow path 23A (the side opposite to the drainage path 16). The other end of the communication passage 24A is connected to the bottom wall portion of the water storage portion 21A.

  The water conduit 25A extends in the up-down direction and is provided in the water reservoir 21A. The lower end portion of the water conduit 25A is connected to the other end portion of the communication path 24A in the bottom wall portion. The upper end 27A of the water conduit 25A (the downstream end of the water passage 22A when the cleaning water W flows into the water storage portion 21A) is upward at a position lower than the water level when the cleaning tank 10 is full and higher than the drain valve 12. Is open. As described above, the water passage 22 </ b> A is a flow path that connects the drainage passage 16 and the water storage portion 21 </ b> A. When the drain valve 12 is opened while the washing tank 10 is full of water, a part of the washing water W flowing out from the drain valve 12 to the drain channel 16 side by the head pressure of the washing tank 10 is caused by the flow resistance to the common channel 23A. And the passage 24A and the water conduit 25A in order, and flows into the water storage portion 21A from the opening of the upper end 27A of the water conduit 25A and is stored.

<Residual means 30A>
The remaining means 30A has a configuration in which the downstream end (the upper end 27A of the water conduit 25A) of the water passage 22A when the above-described washing water W flows into the water storage part 21A is disposed at a position higher than the drain valve 12, and the throttle part 31A. The form which provides is comprised. A space below the upper end 27A of the water conduit 25A in the water storage portion 21A is a residual space 32A. The throttle portion 31A is formed at the lower end portion of the water conduit 25A, that is, the lower end portion of the residual space 32A (water storage portion 21A) (substantially the same height as the upper surface of the bottom wall portion), and the water storage portion 21A at the lower end portion of the residual space 32A. And the water conduit 25 </ b> A. The cleaning water W in the residual space 32A passes through the throttle portion 31A and is discharged into the water passage 22A (the drainage channel 16 side). The opening area of the throttle portion 31A is set smaller than the cross-sectional area of the flow path of the water passage 22A. Therefore, the flow rate of the cleaning water W discharged from the residual space 32A through the throttle portion 31A to the drainage channel 16 side (in the water passage 22A) flows into the residual space 32A from the upper end 27A of the water conduit 25A through the water passage 22A. Less than the flow rate of the wash water W

<Action>
Next, the operation of the first embodiment will be described. As shown in FIG. 1, when the cleaning lever is operated in the large cleaning direction while the cleaning tank 10 is full of water, the float 14 is lifted high and the drain valve 12 is opened. When the drain valve 12 is opened, as shown in FIG. 2, the wash water W in the wash tank 10 begins to be discharged to the toilet bowl 15 side, the water level of the wash tank 10 decreases, and the water head of the wash tank 10 A part of the washing water W flows into the water storage part 21A through the water passage 22A by the pressure, and the water level in the water storage part 21A gradually rises. During this time, the water level in the overflow pipe 26A also rises in the same manner as the water reservoir 21A.

  Then, as shown in FIG. 3, when the water level in the water storage unit 21A becomes the same level as in the cleaning tank 10, the cleaning water W does not flow into the water storage unit 21A, and thereafter, in the water passage 22A and The cleaning water W in the overflow pipe 26 </ b> A is rapidly discharged to the drainage channel 16 while maintaining substantially the same water level as the cleaning water W in the cleaning tank 10. During this time, the amount of water discharged into the water passage 22A (the drainage channel 16 side) of the cleaning water W in the residual space 32A can be reduced in the throttle portion 31A, so that the water level in the residual space 32A is higher than the water level in the cleaning tank 10. The high state is maintained.

  Thereafter, when the water level in the cleaning tank 10 is greatly lowered, the float 14 closes the valve port 13 and the drain valve 12 is closed. However, when the drain valve 12 is closed, the residual water 32A remains in the residual space 32A. The cleaning water W remains by means 30A. Then, as shown in FIG. 4, after the drain valve 12 is closed, the cleaning water W remaining in the residual space 32A sequentially passes through the throttle portion 31A and the water passage 22A and is discharged to the drain passage 16 side. The drain trap part 17 is replenished.

  Further, when the washing lever is operated in the small washing direction while the washing tank 10 is full of water, the drain valve 12 is opened, and the washing water W in the washing tank 10 is flushed as in the case of the large washing. While being discharged to the 15 side, a part of the washing water W flows into the water storage part 21 </ b> A through the water passage 22 </ b> A due to the water head pressure of the washing tank 10. And the water level in the water storage part 21A becomes the same water level as in the washing tank 10, but the water level of the water storage part 21A at this time is almost the same as that at the time of large washing. After this, as in the case of large cleaning, the cleaning water W in the cleaning tank 10 is discharged to the drainage channel 16, but the water level in the residual space 32A is higher than the water level in the cleaning tank 10 by the throttle portion 31A. Maintained.

  Thereafter, the float 14 closes the valve port 13 and the drain valve 12 is closed. However, the height at which the float 14 is lifted by the operation of the cleaning lever is lower than that at the time of large cleaning, so the drain valve 12 The time during which the valve is opened is shorter than that during large washing. However, since the height dimension of the residual space 32A (height from the bottom wall portion to the upper end 27A of the water conduit 25A) is the same regardless of whether the cleaning mode is large or small, the maximum water level of the cleaning water W remaining in the residual space 32A is It is almost the same height as during large washing. After the drain valve 12 is closed, the cleaning water W remaining in the residual space 32A passes through the throttle portion 31A and the water passage 22A in this order and is discharged to the drain passage 16 side to replenish the drain trap portion 17. Is done.

<Embodiment 2>
Next, a second embodiment of the present invention will be described with reference to FIGS. In the cleaning tank apparatus Tb of the second embodiment, the replenishing means 20B has a configuration different from that of the first embodiment. Since other configurations are the same as those of the first embodiment, the same configurations are denoted by the same reference numerals, and descriptions of structures, operations, and effects are omitted.

<Supplying means 20B>
The replenishing means 20B for replenishing the drain trap part 17 with sealing water to prevent the sealing water from running out is configured to include a water storage part 21B, a water passage 22B, and a residual means 30B.

<Water reservoir 21B>
The water reservoir 21B has a box-shaped main body 33B whose upper surface is closed by the upper wall portion and whose lower surface is closed by the bottom wall portion. The main body 33B is accommodated in the cleaning tank 10 and is disposed at a position lower than the water level when the cleaning tank 10 is full. The water storage part 21B has an overflow pipe 26B that extends upward from the upper wall part of the main body part 33B and communicates with the inside of the main body part 33B. The upper end of the overflow pipe 26B is opened at a position higher than the water level when the cleaning tank 10 is full. In this water reservoir 21B, makeup water (wash water W) for replenishing the drain trap section 17 after the drain valve 12 is closed is stored.

<Water passage 22B>
The water passage 22B is composed of a communication passage 24B and a water conduit 25B. One end portion of the communication passage 24B is connected in a communicating state to a position near the valve port 13 (drainage valve 12) in the drainage channel 16 and lower than the bottom wall portion of the water storage portion 21B. The other end portion of the communication passage 24B is connected to the bottom wall portion of the water storage portion 21B. The water conduit 25B extends in the vertical direction and is provided in the main body portion 33B. The lower end portion of the water conduit 25B is connected in communication with the other end portion of the communication passage 24B at the bottom wall portion of the water storage portion 21B. The upper end 27B of the water conduit 25B (the downstream end of the water passage 22B when the cleaning water W flows into the water storage portion 21B) is lower than the water level when the cleaning tank 10 is full and the upper wall portion of the main body portion 33B. And it is opened upward at a position higher than the drain valve 12.

  As described above, the water flow path 22B is a flow path that connects the drainage path 16 and the water storage section 21B. When the drain valve 12 is opened while the washing tank 10 is full of water, a part of the washing water W flowing out from the drain valve 12 to the drain channel 16 side by the head pressure of the washing tank 10 is connected to the communication path 24B by the flow resistance. The water guide passage 25B is sequentially passed through the opening of the upper end 27B of the water guide passage 25B into the water storage portion 21B for storage. A space below the upper end 27B of the water conduit 25B in the main body 33B is a residual space 32B. Moreover, since the upper wall part of the main-body part 33B is arrange | positioned so as to oppose the position near the upper end 27B (downstream end of the water flow path 22B) of the water conduit 25B, the wash water discharged from the downstream end of the water flow path 22B It functions as a guide surface 34B for guiding W by reflecting it downward toward the residual space 32B.

<Residual means 30B>
The remaining means 30B includes a configuration in which the downstream end of the water passage 22B (the upper end 27B of the water conduit 25B) is disposed at a position higher than the drain valve 12, and a configuration in which the throttle portion 31B is provided. The throttle portion 31B is formed at the lower end portion of the water conduit 25B, that is, the lower end portion of the residual space 32B (water storage portion 21B), and communicates the water storage portion 21B and the water conduit 25B at the lower end portion of the residual space 32B. The washing water W in the residual space 32B is discharged into the water passage 22B (drainage 16 side) through the throttle portion 31B. The opening area of the throttle part 31B is set smaller than the cross-sectional area of the flow path of the water passage 22B. Therefore, the flow rate of the cleaning water W discharged from the residual space 32B through the throttle portion 31B to the drainage channel 16 side (in the water passage 22B) flows into the water storage portion 21B from the upper end 27B of the water conduit 25B through the water passage 22B. Less than the flow rate of the wash water W

<Action>
Next, the operation of the second embodiment will be described. As shown in FIG. 4, when the cleaning lever (not shown) is operated in the large cleaning direction in a state where the cleaning tank 10 is full of water, the float 14 is raised and the drain valve 12 is opened. When the drain valve 12 is opened, as shown in FIG. 5, the wash water W in the wash tank 10 begins to be discharged to the toilet bowl 15 side, the water level of the wash tank 10 decreases, and the water head of the wash tank 10 A part of the washing water W flows into the water storage part 21B through the water passage 22B by the pressure. As the cleaning water W flows in, the water level in the water storage portion 21B gradually rises and reaches the overflow pipe 26B over the upper wall portion of the main body portion 33B.

  Then, as shown in FIG. 5, when the water level in the water storage unit 21B (overflow pipe 26B) becomes the same as that in the cleaning tank 10, the cleaning water W does not flow into the water storage unit 21B. Thereafter, the cleaning water W in the overflow pipe 26B, the cleaning water W in the space above the residual space 32B in the main body 33B, and the cleaning water W in the water passage 22B are cleaned in the cleaning tank 10. The water is rapidly discharged into the drainage channel 16 while maintaining the same water level as the water W.

  During this time, the amount of water discharged from the remaining space 32B into the water passage 22B (on the drainage channel 16 side) can be reduced in the throttle portion 31B, so that the water level in the water storage portion 21B is higher than the water level in the cleaning tank 10. The high state is maintained. Thereafter, when the water level in the washing tank 10 is greatly lowered, the float 14 closes the valve port 13 and the drain valve 12 is closed. However, when the drain valve 12 is closed, the water remains in the residual space 32B. The cleaning water W remains by the means 30B. After the drain valve 12 is closed, the cleaning water W remaining in the residual space 32B sequentially passes through the throttle portion 31B and the water passage 22B and is discharged to the drain passage 16 side to replenish the drain trap portion 17. Is done.

  Further, when the washing lever is operated in the small washing direction while the washing tank 10 is full of water, the drain valve 12 is opened, and the washing water W in the washing tank 10 is flushed as in the case of the large washing. While being discharged to the 15 side, a part of the washing water W flows into the water storage part 21 </ b> B through the water passage 22 </ b> B due to the water head pressure of the washing tank 10. And although the water level in the water storage part 21B becomes the same water level as the inside of the washing tank 10, the water level of the water storage part 21B at this time is substantially the same height as at the time of large washing. Thereafter, as in the case of large cleaning, the cleaning water W in the cleaning tank 10 is discharged to the drainage channel 16, but the water level in the residual space 32B is higher than the water level in the cleaning tank 10 by the throttle portion 31B. Maintained.

  After that, the drain valve 12 is closed, but the height at which the float 14 is lifted by the operation of the cleaning lever is lower than that at the time of the large cleaning, so the time during which the drain valve 12 is open is the large cleaning. Shorter than time. However, since the height dimension of the residual space 32B (height from the bottom wall portion to the upper end 27B of the water conduit 25B) is the same regardless of whether the cleaning mode is large or small, the maximum water level of the cleaning water W remaining in the residual space 32B is The height is almost the same as that for large washing. After the drain valve 12 is closed, the cleaning water W remaining in the residual space 32B sequentially passes through the throttle portion 31B and the water passage 22B and is discharged to the drain passage 16 side to replenish the drain trap portion 17. Is done.

<Embodiment 3>
Next, a third embodiment of the present invention will be described with reference to FIGS. In the cleaning tank device Tc of the third embodiment, the water conduit 25C and the remaining means 30C constituting the water passage 22C are configured differently from those of the second embodiment. Since the other configuration is the same as that of the second embodiment, the same configuration is denoted by the same reference numeral, and description of the structure is omitted.

  The remaining means 30C of the third embodiment includes a height adjusting means 37 that can adjust the height of the upper end 27C of the water conduit 25C (the downstream end of the water passage 22C). The configuration of the height adjusting means 37 is as follows. The water guide channel 25 </ b> C includes a cylindrical peripheral wall portion 35 whose axis is directed in the vertical direction, and a cylindrical member 36 that is externally fitted to the peripheral wall portion 35. A male screw portion 35M is formed on the outer periphery of the peripheral wall portion 35, and a female screw portion 36F is formed on the inner periphery of the cylindrical member 36. By engaging the male screw portion 35M and the female screw portion 36F, the cylindrical member 36 is fitted on the peripheral wall portion 35, and the upper end of the cylindrical member 36 is the upper end 27C of the water conduit 25C (the washing water W flows into the water storage portion 21C. The downstream end of the water passage 22 </ b> C). When the cylindrical member 36 is rotated, the height of the upper end 27C of the water conduit 25C, that is, the height of the residual space 32C below the upper end 27C of the water conduit 25C in the water storage portion 21C changes and is stored in the residual space 32C. The maximum water level of the cleaning water W is also increased or decreased.

  Further, the remaining means 30C of the third embodiment includes an opening adjusting means 38 that can adjust the opening area of the throttle portion 31C. The opening adjusting means 38 includes a throttle portion 31C formed at the lower end portion of the peripheral wall portion 35, a horizontal guide rail 39 formed on the outer surface of the peripheral wall portion 35, and a shielding member that can slide in the horizontal direction along the guide rail 39. 40. The diaphragm portion 31 </ b> C has an oval shape that is long in a direction parallel to the sliding direction of the shielding member 40. The shielding member 40 is formed with a semicircular cutout portion 41 corresponding to the semicircular edge portions at both ends of the throttle portion 31C. As shown in FIG. 9, when the shielding member 40 is moved to a position where it is retracted from the opening area of the throttle portion 31C, the opening area of the throttle portion 31C increases, and the drainage of the wash water W from the residual space 32C to the water passage 22C. The flow rate increases. Further, as shown in FIG. 10, when the shielding member 40 is moved to a position where the shielding member 40 advances into the opening area of the throttle portion 31C, the opening area of the throttle portion 31C becomes small, and the drainage flow rate from the residual space 32C to the water passage 22C. Less.

<Embodiment 4>
Next, a fourth embodiment of the present invention will be described with reference to FIG. The cleaning tank device Td according to the fourth embodiment has a replenishing means 20D having a configuration different from that of the first embodiment. Other configurations are the same as those of the first embodiment. About the same structure, the same code | symbol is attached | subjected and description of a structure, an effect | action, and an effect is abbreviate | omitted.

  The replenishing means 20D for replenishing the drain trap part 17 with sealing water to prevent the sealing water from running out is configured to include a water storage part 21D, a water passage 22D, and a residual means 30D. The water storage part 21 </ b> D has a form in which the upper surface is opened and the lower surface is closed by the bottom wall part, and is stored in the cleaning tank 10. The upper end of the water reservoir 21D is opened at a position higher than the water level when the cleaning tank 10 is full. In this water storage part 21D, makeup water (washing water W) for replenishing the drain trap part 17 after the drain valve 12 is closed is stored.

  The water flow path 22D is a flow path that connects the drainage path 16 and the water storage section 21D. That is, one end of the water passage 22D is connected to the drainage passage 16 in a communicating state, and the other end of the water passage 22D is connected to a lower end of the water storage portion 21D in a communicating state. When the drain valve 12 is opened while the washing tank 10 is full of water, a part of the washing water W flowing out from the drain valve 12 to the drainage channel 16 due to the head pressure of the washing tank 10 is caused by the flow resistance to the water passage 22D. The water is stored in the water storage part 21D.

  The residual means 30D is configured by disposing the drainage valve 12 at a position higher than the communication part between the drainage channel 16 and the water passage 22D and the lower end part of the water storage part 21D. That is, the upstream portion of the drainage channel 16 has a tubular shape extending in the vertical direction inside the cleaning tank 10, and a valve port 13 is formed at the upper end (upstream end) of the drainage channel 16.

  Next, the operation of the fourth embodiment will be described. When the cleaning lever (not shown) is operated in a state where the cleaning tank 10 is full of water, the float 14 is lifted and the drain valve 12 is opened. When the drain valve 12 is opened, the washing water W in the washing tank 10 is discharged into the drainage channel 16 (toilet bowl side), and a part of the washing water W is discharged from the drainage channel 16 by the head pressure of the washing tank 10. It flows into the water reservoir 21D through the water passage 22D. When the water level in the water storage unit 21D becomes the same as that in the cleaning tank 10, the cleaning water W does not flow into the water storage unit 21D. Thereafter, the cleaning water W in the water storage unit 21D is discharged to the drainage channel 16 while maintaining substantially the same water level as the cleaning water W in the cleaning tank 10.

  Thereafter, the drain valve 12 is closed, but the position of the drain valve 12 is higher than the lower end of the water reservoir 21D. Therefore, at the time when the drain valve 12 is closed, the cleaning water W remains in the water reservoir 21D. Then, after the drain valve 12 is closed, the wash water W remaining in the water reservoir 21D passes through the water passage 22D and is discharged to the drain channel 16 side, and is supplied to the drain trap unit 17.

<Effect of embodiment>
The cleaning tank devices Ta, Tb, Tc, and Td of the first to fourth embodiments communicate with the drainage passage 16 through the water passages 22A, 22B, 22C, and 22D, and when the drainage valve 12 is opened, The water storage parts 21A, 21B, 21C, and 21D in which a part of the washing water W flows from the drainage channel 16 through the water passages 22A, 22B, 22C, and 22D due to the water head pressure of While the wash water W is discharged to the toilet bowl side and the drain valve 12 is closed, the wash water W that has flowed into the water storage portions 21A, 21B, 21C, and 21D is left and the drain valve 12 is closed. After that, residual means 30A, 30B, 30C, 30D for discharging the wash water W in the water reservoirs 21A, 21B, 21C, 21D to the drainage channel 16 side are provided.

  According to this configuration, the amount of the cleaning water W stored in the water storage units 21A, 21B, 21C, and 21D for replenishment to the drain trap unit 17 is determined by the water head pressure when the cleaning tank 10 is full. In both cleaning modes, the amount of makeup water to the drain trap unit 17 is constant. Further, the storage amount of the cleaning water W in the water storage units 21 </ b> A, 21 </ b> B, 21 </ b> C, 21 </ b> D is not affected by the supply water pressure from the clean water to the cleaning tank 10. Therefore, it is possible to avoid the excessive amount of washing water W from being supplied to the drain trap part 17, and consequently, it is possible to save water by reducing the amount of water discharged from the drain trap part 17.

  In the cleaning tank apparatuses Ta, Tb, and Tc of the first to third embodiments, the remaining means 30A, 30B, and 30C are configured so that the discharge flow rate of the cleaning water W from the water storage portions 21A, 21B, and 21C to the drainage channel 16 side is 22A , 22B, 22C is configured to be smaller than the flow rate of the cleaning water W flowing into the water storage portions 21A, 21B, 21C. According to this configuration, since the amount of the washing water W flowing into the water storage units 21A, 21B, and 21C is relatively large, a predetermined amount of the washing water W can reliably remain in the water storage units 21A, 21B, and 21C. . Further, since the amount of discharged water from the water storage units 21A, 21B, 21C to the drainage channel 16 side is relatively small, it is possible to suppress the generation of noise due to the flow of the wash water W supplied to the drainage trap unit 17.

  In the cleaning tank apparatuses Ta, Tb, and Tc of the first to third embodiments, the remaining means 30A, 30B, and 30C are downstream of the water passages 22A, 22B, and 22C when the cleaning water W flows into the water storage portions 21A, 21B, and 21C. The water storage section is provided in a form in which the ends (the upper ends 27A, 27B, 27C of the water conduits 25A, 25B, 25C) are arranged at a position higher than the drain valve 12 and at a position lower than the downstream ends of the water passages 22A, 22B, 22C 21A, 21B, and 21C are provided with throttle portions 31A, 31B, and 31C that allow the wash water W in the 21A, 21B, and 21C to flow out toward the drainage channel 16 at a lower flow rate than when the water flows. According to this configuration, the maximum water level of the cleaning water W remaining in the water storage portions 21A, 21B, and 21C is the same height as the downstream end of the water passages 22A, 22B, and 22C, and this height is a large and small cleaning configuration. And constant without being affected by the feed water pressure to the washing tank 10. Therefore, the amount of the cleaning water W replenished to the drain trap unit 17 can always be kept constant even if the cleaning mode is large or the supply water pressure to the cleaning tank 10 changes.

  In the cleaning tank apparatus Tc of the third embodiment, the residual means 30C is provided with an opening adjusting means 38 that can adjust the opening area of the throttle portion 31C. Therefore, the time required for replenishment to the drain trap part 17 can be appropriately set by adjusting the opening area of the throttle part 31C. Similarly, in the cleaning tank apparatus Tc of the third embodiment, the residual means 30C is provided with a height adjusting means 37 capable of adjusting the height of the downstream end of the water passage 22C (the upper end 27C of the water conduit 25C). Therefore, by adjusting the height of the downstream end of the water passage 22C, the amount of the cleaning water W remaining in the water storage portion 21C when the drain valve 12 is closed can be appropriately changed.

  In the cleaning tank devices Ta, Tb, and Tc of the first to third embodiments, the amount of the cleaning water W remaining in the water storage units 21A, 21B, and 21C when the drain valve 12 is closed is the drain trap unit after the valve closing. It becomes the amount of makeup water to 17. In view of this point, the remaining means 30A, 30B, and 30C of Embodiments 1 to 3 are such that the water levels of the water storage portions 21A, 21B, and 21C when the drain valve 12 is closed are substantially the same as the water level of the cleaning tank 10. It was made to become. As a result, the water levels of the water storage parts 21A, 21B, and 21C when the valve is closed are substantially constant, so that the amount of replenishment water to the drain trap part 17 does not needlessly increase.

  In the cleaning tank devices Tb and Tc of the second and third embodiments, the water storage portions 21B and 21C are disposed inside the cleaning tank 10 and the overflow pipes 26B and 26C are configured so that the upper end opening faces the cleaning tank 10. I have. According to this configuration, since the water storage parts 21B and 21C have the functions of the overflow pipes 26B and 26C, the internal structure of the cleaning tank 10 is simplified as compared with the case where the water storage part and the overflow pipe are provided separately. It is possible.

  In the cleaning tank devices Tb and Tc of the second and third embodiments, the downstream ends of the water passages 22B and 22C (the upper ends 27B and 27C of the water conduits 25B and 25C) when the cleaning water W flows into the water storage portions 21B and 21C. In the vicinity, a guide surface 34B for guiding the wash water W discharged from the downstream ends of the water passages 22B and 22C to the water storage portions 21B and 21C is provided. According to this configuration, the cleaning water W discharged from the downstream ends of the water passages 22B and 22C can be surely flowed into the water storage portions 21B and 21C through the guide surface 34B.

<Other embodiments>
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention.
(1) In Embodiments 1 to 3, the throttle portion is communicated with the water channel, but the throttle portion may be directly communicated with the drainage channel without being communicated with the water channel.
(2) In the first to third embodiments, when the drain valve is closed, the water level of the water storage section is substantially the same as the water level of the washing tank, but the water level of the water storage section when the drain valve is closed May be lower than the water level in the wash tank or higher than the water level in the wash tank.
(3) In the first to fourth embodiments, the water storage unit is disposed inside the cleaning tank. However, the water storage unit may be disposed outside the cleaning tank.
(4) In Embodiments 2 to 4, the water reservoir and the overflow pipe are integrated, but in Embodiments 2 to 4, an overflow pipe may be provided separately from the water reservoir.
(5) The aperture adjusting means of the third embodiment may be applied to the first embodiment.
(6) The height adjusting means of the third embodiment may be applied to the first embodiment.
(7) The guide surfaces of the second and third embodiments may be applied to the first embodiment.

Ta, Tb, Tc, Td ... Washing tank device 10 ... Washing tank 15 ... Toilet bowl 17 ... Drain trap part 16 ... Drainage channel 12 ... Drain valve 21A, 21B, 21C, 21D ... Reservoir part 22A, 22B, 22C, 22D ... Water passage 26A, 26B ... overflow pipe 27A, 27B, 27C ... upper end of water conduit (downstream end of water passage when washing water flows into the reservoir)
30A, 30B, 30C, 30D ... residual means 31A, 31B, 31C ... throttle part 34B ... guide surface 37 ... height adjusting means 38 ... opening adjusting means

Claims (8)

A cleaning tank for storing cleaning water;
A drainage channel for draining the wash water in the wash tank to the toilet bowl side connected to the drain trap part;
An openable and closable drain valve provided at the upstream end of the drainage channel;
When the drainage valve opens and communicates with the drainage channel via the water passage, a part of the washing water flows from the drainage channel through the water passage due to the head pressure in the washing tank. A water reservoir,
The washing water in the washing tank is discharged to the toilet bowl side and the drain valve is closed, and the washing water that has flowed into the water storage section is left, and after the drain valve is closed, the flush water in the water storage portion e Bei and residual means for discharging to the drainage path side,
The residual tank is configured so that the water level of the water storage section when the drain valve is closed is configured to be the same as or slightly lower than the water level of the cleaning tank. . A cleaning tank for storing cleaning water;
A drainage channel for draining the wash water in the wash tank to the toilet bowl side connected to the drain trap part;
An openable and closable drain valve provided at the upstream end of the drainage channel;
When the drainage valve opens and communicates with the drainage channel via the water passage, a part of the washing water flows from the drainage channel through the water passage due to the head pressure in the washing tank. A water reservoir,
The washing water in the washing tank is discharged to the toilet bowl side and the drain valve is closed, and the washing water that has flowed into the water storage section is left, and after the drain valve is closed, the And a residual means for discharging the wash water in the water reservoir to the drainage channel side,
The residual means is
A configuration in which the downstream end of the water passage when the washing water flows into the water storage section is disposed at a position higher than the drain valve;
And a configuration in which a throttling portion is provided at a position lower than the downstream end of the water passage to allow the washing water in the water storage portion to flow out to the drainage channel at a lower flow rate than when flowing in. Washing tank equipment to do. 3. The cleaning tank apparatus according to claim 2 , wherein the remaining means includes an opening adjusting means capable of adjusting an opening area of the throttle portion . The washing tank apparatus according to claim 2 or 3, wherein the residual means includes a height adjusting means capable of adjusting a height of the downstream end of the water passage . A cleaning tank for storing cleaning water;
A drainage channel for draining the wash water in the wash tank to the toilet bowl side connected to the drain trap part;
An openable and closable drain valve provided at the upstream end of the drainage channel;
When the drainage valve opens and communicates with the drainage channel via the water passage, a part of the washing water flows from the drainage channel through the water passage due to the head pressure in the washing tank. A water reservoir,
The washing water in the washing tank is discharged to the toilet bowl side and the drain valve is closed, and the washing water that has flowed into the water storage section is left, and after the drain valve is closed, the And a residual means for discharging the wash water in the water reservoir to the drainage channel side,
2. A cleaning tank apparatus comprising an overflow pipe in which the water storage section is disposed inside the cleaning tank, and an opening at an upper end faces the cleaning tank. A cleaning tank for storing cleaning water;
A drainage channel for draining the wash water in the wash tank to the toilet bowl side connected to the drain trap part;
An openable and closable drain valve provided at the upstream end of the drainage channel;
When the drainage valve opens and communicates with the drainage channel via the water passage, a part of the washing water flows from the drainage channel through the water passage due to the head pressure in the washing tank. A water reservoir,
The washing water in the washing tank is discharged to the toilet bowl side and the drain valve is closed, and the washing water that has flowed into the water storage section is left, and after the drain valve is closed, the And a residual means for discharging the wash water in the water reservoir to the drainage channel side,
In the vicinity of the downstream end of the water passage when cleaning water flows into the water reservoir, a guide surface is provided for guiding the wash water discharged from the downstream end of the water passage toward the water reservoir. A cleaning tank device characterized by that . A cleaning tank for storing cleaning water;
A drainage channel for draining the wash water in the wash tank to the toilet bowl side connected to the drain trap part;
An openable and closable drain valve provided at the upstream end of the drainage channel;
When the drainage valve opens and communicates with the drainage channel via the water passage, a part of the washing water flows from the drainage channel through the water passage due to the head pressure in the washing tank. A water reservoir,
The washing water in the washing tank is discharged to the toilet bowl side and the drain valve is closed, and the washing water that has flowed into the water storage section is left, and after the drain valve is closed, the And a residual means for discharging the wash water in the water reservoir to the drainage channel side,
The cleaning tank apparatus, wherein an upper surface of the water storage part is opened to a position higher than a water level when the cleaning tank is full . The residual means is configured such that the discharge flow rate of the wash water from the water reservoir to the drainage channel is smaller than the flow rate of the wash water flowing from the water passage into the water reservoir. The cleaning tank apparatus according to any one of claims 1 to 7.