JP4863155B2 - Pumped flush toilet equipment - Google Patents

Description

  The present invention relates to a pressure-flush flush toilet apparatus that is installed in a house and pumps and drains urine and miscellaneous wastewater.

  Conventional flush toilets need a water tank to store the wash water. For this reason, conventional care flush toilets have a large water tank to store a large amount of water. There was a flush toilet (see Patent Document 1, for example) including an electromagnetic valve that opens and closes a water supply pipe to supply flush water to the toilet and timer means that stops the supply of water for a certain period of time. Was not considered.

  In addition, the waste discharged from the toilet is finely crushed by a crusher and then sent to a storage tank. Further, the sewage in the storage tank is discharged to an external system such as a drainage mass through a drain pipe by a pressure pump. However, the water saving was not considered similarly (for example, refer patent document 2).

Utility model registration No. 3076664

JP-A-5-311716

  The present invention relates to a pressure-flush flush toilet apparatus that pulverizes and forcibly discharges filth, and particularly in a pressure-flush flush toilet that optimally controls the amount of water stored in a pressure feed tank by a water amount sensor and a water level sensor. The required amount of water (for example, 2 L) is put into the toilet bowl, and a predetermined amount (for example, 1 L) is supplied to the storage tank later, but this is suppressed to about half of the amount of flushing water in the conventional toilet bowl. In addition, in order to save water as much as possible and wash the toilet bowl, in order to reduce the amount of accumulated water and also reduce the amount of water to be added to the storage tank, the standard water level that can be pumped by the storage tank in consideration of the amount of waste is set. It is decided to provide a pressure-flush flush toilet apparatus that supplies the necessary amount of water with high accuracy, considering that water is added to the storage tank when the amount of water in the storage tank is insufficient.

In order to achieve the above object, the first invention provides a toilet bowl, a water supply pipe for supplying pooled water to the bowl of the toilet bowl, water supply means for controlling the supply of pooled water, and the pool discharged from the toilet bowl. A storage tank for temporarily storing and crushing water and filth, drainage means for discharging the pooled water and filth toward the storage tank, water level detection means for detecting the water level of the storage tank, and the pool of the storage tank In a pressure-feed type flush toilet apparatus comprising: a pressure-feeding unit that pumps water and filth to the outside; and a control unit that controls the water-feeding unit, the drainage unit, and the pressure-feeding unit. It has a pumping drive water level that is set to a level at which filth can be completely crushed and discharged at a large water level, and the drainage means is driven to discharge the pooled water and filth from the toilet to the storage tank. In after, the water level when the detection of the detecting means is less than the pumping drive level, the water level in the reservoir is subjected to water in the storage tank so that the pumping drive level above, then the pumping means Driven and pumped to the outside.

As a result, a small amount of pooled water is usually supplied to the toilet, and in the storage tank, water is supplied to this storage tank so that the amount of water necessary for completely crushing and discharging the waste is crushed and ground. Since it is possible to shift to the discharging operation, it becomes possible to completely crush and discharge the filth.

Moreover, 2nd invention is the pressure-feed type flush toilet apparatus of Claim 1, The water supply switching means provided in the downstream of the said water supply means and which switches a flow path to the said toilet bowl and the said storage tank, The said water supply switching A storage tank water supply pipe for supplying water to the storage tank via the means, and after the drainage means is driven to discharge the pooled water and filth from the toilet to the storage tank, the water level detection When the detection of the means is less than the pumping drive water level, the water supply means and the water supply switching means are controlled to supply water to the storage tank.

  As a result, when the amount of water required to completely pulverize and discharge the waste is insufficient, additional water can be supplied to the storage tank without supplying water to the toilet, It is possible to secure a water level that can be discharged. In addition, toilet flushing can always be performed with a small amount of water saved.

The third aspect of the present invention is the pressure-flush flush toilet apparatus according to claim 2, further comprising water amount detection means for detecting the amount of water in the water supply pipe, wherein the control means is the water level detection means. The target water supply amount is calculated from a difference in water level between the output of the water supply and the pumping drive water level, and when the output of the water amount detection means coincides with the target water supply amount, the water supply means is driven to stop the water supply.
Thereby, the fluctuation | variation of a water surface is large during the water supply to a storage tank. Therefore, it is possible to additionally supply a more accurate amount of water by detecting the flow rate of the water amount detection means and calculating the target water supply amount by relying on the water level detection means to perform water supply / water stoppage. It is possible to save water and to completely pulverize and discharge the filth.

The fourth invention is the control means, characterized by calculating and updating the target supply amount of water at a predetermined period in response to an output of said level detecting means.
Thereby, the control means, it is possible to water that has been detected from the water sensor due to the difference in water supply pressure, even if it was different from the actual amount of water, and updates the target supply amount of water by the water level detected from the water level sensor, filth It is possible to accurately supply the amount of water necessary to completely pulverize and discharge the water.

  According to the present invention, water necessary for pulverizing and discharging filth can be accurately supplied in a pressure-feed type flush toilet. This has the effect of saving water without supplying more water than necessary.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
FIG. 1 is a configuration diagram illustrating a first example of a pressure-flush flush toilet apparatus according to an embodiment of the present invention, which is connected to a toilet 1 and an outlet 2 of the toilet 1 and stores sewage and filth. 3, a flap valve 9 for opening and closing between the toilet 1 and the storage tank 3, a water supply pipe 5 a for supplying water to the toilet 1, and a water supply pipe 5 a provided in the middle of the water supply pipe 5 a. A water supply valve 5 that supplies water to the toilet 1 and the storage tank 3, a motor (pump) 4 that pulverizes filth collected in the storage tank 3, and pumps the waste together with the sewage 3. It is composed of a water level sensor 7 for detecting the level of water accumulated therein and a control device 8 for controlling these.

  The interior of the storage tank 3 includes a crushing chamber 4a in which filth and toilet paper discharged from the outlet 2 of the toilet 1 are stored, a cutter 4b for crushing filth and toilet paper in the crushing chamber 4a, An impeller 4c is further provided on the lower part of the same rotating shaft as the cutter 4b. The cutter 4b and the impeller 4c are controlled to rotate by a motor 4 mounted on the same rotating shaft, so that sewage, crushed dirt and toilet Paper or the like is discharged to the outside through the water distribution pipe 4d. Furthermore, the hollow tank 7a is attached to the storage tank 3 so that one end thereof is exposed to the outside of the storage tank 3 and the other end is provided so as to enter the inside of the storage tank 3. A water level sensor 7 for detecting the water level in the storage tank 3 is attached to one end of the hollow pipe 7a. And if the opening lower end part 7b of the cavity pipe | tube 7a inside the storage tank 3 is submerged, the air in the cavity pipe | tube 7a will be in an airtight state by the opening lower end part 7b, the water surface, and the water level sensor 7, and in this cavity pipe | tube 7a The water level sensor 7 detects the water pressure through the air, so that the water level in the storage tank 3 is detected.

  FIG. 2 is a configuration diagram showing a second example of the pressure-flush flush toilet apparatus according to another embodiment of the present invention, and is a storage tank connected to the toilet 1 and the outlet 2 of the toilet 1 to store sewage and filth. 3, a flap valve 9 for opening and closing between the toilet 1 and the storage tank 3, a water supply pipe 5 a for supplying water to the toilet 1, and a water supply / stop of water supplied from the water supply pipe 5 a are switched. A water supply valve 5, a switching valve 5c for switching whether water supplied from the water supply valve 5 is supplied to the toilet 1 through the water supply pipe 5a or to the storage tank 3 through the water supply pipe 5b for the storage tank, and the water supply pipe 5a , A flow sensor 6 for detecting the flow rate of the cleaning water, a motor (pump) 4 for crushing the filth collected in the storage tank 3 and pumping it together with the sewage to the outside of the storage tank 3, and storage A water level sensor 7 for detecting the level of water accumulated in the tank 3; And a control unit 8 for controlling these.

  The interior of the storage tank 3 includes a crushing chamber 4a in which filth and toilet paper discharged from the discharge port 2 of the toilet 1 are stored, a cutter 4b for crushing filth and toilet paper in the crushing chamber 4a, An impeller 4c is further provided on the lower part of the same rotating shaft as the cutter 4b. The cutter 4b and the impeller 4c are controlled to rotate by a motor 4 mounted on the same rotating shaft, so that sewage, crushed dirt and toilet Paper or the like is discharged to the outside through the water distribution pipe 4d. Furthermore, the hollow tank 7a is attached to the storage tank 3 so that one end thereof is exposed to the outside of the storage tank 3 and the other end is provided so as to enter the inside of the storage tank 3. A water level sensor 7 for detecting the water level in the storage tank 3 is attached to one end of the hollow pipe 7a. And if the opening lower end part 7b of the cavity pipe | tube 7a inside the storage tank 3 is submerged, the air in the cavity pipe | tube 7a will be in an airtight state by the opening lower end part 7b, the water surface, and the water level sensor 7, and in this cavity pipe | tube 7a The water level sensor 7 detects the water pressure through the air, so that the water level in the storage tank 3 is detected.

Next, the configuration of the control device 8 will be described with reference to the block diagram of FIG.
The water supply valve control part 15 which controls the water supply valve 5 which controls the water supply to the toilet bowl 1 or the storage tank 3 and water stop, and whether the water supplied by the water supply valve 5 is supplied to the toilet bowl 1 or the storage tank 3 The flow path switching unit 16 that controls the switching valve 5c to be switched, and when the toilet 1 is used, the outlet 2 is closed to collect water in the toilet 1, and the water, filth, and toilet paper collected in the toilet 1 after the toilet is used A drainage control unit 17 that controls the flap valve 9 that opens the discharge port 3 to discharge the storage tank 3 and the like, and a motor for crushing and pumping sewage, filth, and toilet paper discharged to the storage tank 3 4, the control unit 10 outputs a pulse signal output from a motor drive unit 14 that controls the control unit 4, a control unit (CPU) 10 that controls these units, and a water amount sensor 6 that detects the amount of water supplied to the toilet 1 and the storage tank 3 Water quantity test to be transmitted to And parts 12, and a water level detection unit 13 for transmitting the signal output from the water level sensor 7 for detecting the water level in the reservoir 3 to the control unit 10.
The control unit (CPU) 10 stores control routines for a water processing routine, a waste discharge processing routine, a target water supply amount calculation routine, and a post-closed water supply amount storage routine which will be described later.

  In the above configuration, the operation of the pressure-feed type flush toilet apparatus of the present invention will be described with reference to a flowchart. FIG. 4 is a flowchart showing an operation sequence for water before using the toilet. First, when the user tries to store water in the toilet 1 by operating a switch, or when a human sensor detects that a person is sitting on the toilet 1, the control is performed. After switching the switching valve 5c to the toilet side by the flow path switching unit 16 (S101), the unit 10 opens the water supply valve 5 by the water supply valve control unit 15 to supply water to the toilet 1 (S102). And the control part 10 receives the pulse signal detected from the water quantity sensor 6 provided in the water supply piping 5a via the water quantity detection part 12, and calculates the flow volume supplied to the toilet bowl 1 by counting the number of pulses, When the water supply valve 5 is equal to or greater than the total water amount obtained by subtracting the post-close water amount learned by the processing described later from the total 1.4 liters after the water supply valve 5 is opened (S103), the control unit 10 causes the water supply valve control unit 15 to use the water supply valve 5 Is closed (S104). Then, the control unit 10 learns the water supply amount until the water supply is completely stopped after the water supply valve 5 is driven to close in a post-closed water supply amount storage process to be described later (S105). Thereafter, the switching valve 5c is switched to the storage tank 3 side by the flow path switching unit 16 (S106). In this way, the control unit 10 performs the operation of supplying pooled water to the toilet 1 before using the toilet.

  Next, the operation sequence after the stool will be described with reference to the flowchart shown in FIG. First, when the user tries to flow filth by a switch operation or when it is detected by a human body sensor that a person has left the toilet 1, the control unit 10 switches the switching valve 5 c to the toilet side by the flow path switching unit 16. Then, the water supply control unit 15 opens the water supply valve 5 to start cleaning the toilet 1 (S201). At the same time, the motor 4 is driven by the motor drive unit 14 (S202), and the drainage of the water accumulated in the storage tank 3 is started, and the water in the storage tank 3 is drained to the vicinity of the lower open end 7b of the hollow pipe 7a. If the water level is less than 20 mm (S203), the motor drive unit 14 stops the driving of the motor 4 and ends the drainage (S204). Then, the toilet 1 is washed while draining the water accumulated in the storage tank 3, and the control unit 10 receives the pulse signal detected by the water amount sensor 6 via the water amount detection unit 12, and the number of pulses is determined. The flow rate supplied to the toilet 1 is calculated by counting, and the total water supply amount after opening the water supply valve 5 is equal to or greater than the water amount obtained by subtracting the post-closed water amount learned by the processing described later from 1.2L. If it becomes (S205), the water supply control part 15 will drive the water supply valve 5 closed (S206). Further, the control unit 10 learns the water supply amount until the water supply is completely stopped after the water supply valve 5 is driven to close in a post-closed water supply amount storage process to be described later (S207). And the control part 10 switches the switching valve 5c to the storage tank side by the flow-path switching part 16 (S208), and complete | finishes the toilet 1 washing | cleaning.

  Thereafter, the control unit 10 opens the flap valve 9 by the drainage control unit 17, discharges water and filth collected in the toilet 1 to the storage tank 3, and then closes the flap valve 9 to store the toilet 1. The connection with the tank 3 is blocked (S209). As described above, the toilet 1 and the storage tank 3 are blocked by the flap valve 9 in order to prevent the toilet 1 from being soiled during excretion, but the toilet 1 needs a certain amount of pool water. When the storage tank 3 is not shut off, water having the same level as the water stored in the toilet 1 is stored in the storage tank 3 side in advance, and a large amount of water is required. In addition, when the filth is discharged from the toilet 1 to the storage tank 3, the toilet 1 has water and the storage tank 3 has no water, so that the filth can flow out smoothly. This is to make it possible.

  Here, the control unit 10 reads the signal detected by the water level sensor 7 at an interval of 0.5 seconds via the water level detection unit 13, and calculates the water level in the current storage tank 3 based on the moving average of the latest four detection data. And the current water level is checked (S210). At this time, the water supplied to the toilet 1 by opening the water supply valve 5 is a total of 2.6 liters of the first pooled water of 1.4 liters and the second water supply of 1.2 liters. The water level in the storage tank 3 is less than 80 mm, and the water level does not rise more than 80 mm even when the rise in the water level due to filth is very large. This is because water is supplied from the beginning, and the water level rises significantly due to filth etc., preventing the water from being used more than necessary and wasting water. This is to prevent water from overflowing from 1 or the storage tank 3 or too much water, thereby increasing the load on the pump and causing failure.

  Therefore, in normal cases, the water level in the storage tank 3 at this point is less than 80 mm (S210: No). In the target water supply amount calculation processing described later, the water supply amount necessary for the water level to be 80 mm is set as the target water supply amount. The amount is calculated (S211), and the water supply valve controller 15 opens the water supply valve 5 to start water supply to the storage tank 3 (S212). Then, it is checked whether or not the water supply amount after updating the target water supply amount is equal to or greater than the target water supply amount (S213). If the water supply amount is less than the target water supply amount (S213: No), the target water supply amount calculation process is performed again. (S211), the water supply valve 5 is kept open (S212), and the water supply to the storage tank 3 is continued. In this way, while constantly updating the target water supply amount, water supply to the storage tank 3 is continued until the water supply amount detected by the water amount sensor 6 becomes equal to or higher than the target water supply amount, and the control unit 10 becomes equal to or higher than the target water supply amount. (S213: Yes), the water supply valve 5 is closed by the water supply valve control section 15 (S214), and the water supply valve 5 is driven to close in the post-closed water supply amount storage process described later, and then the water supply is completely stopped. The amount of water supply until the first time is learned (S215).

In this way, water is supplied until the water level in the storage tank 3 reaches 80 mm, or when the drainage from the toilet 1 to the storage tank 3 is completed and the water supply to the storage tank 3 is completely stopped, If the water level is 80 mm or more (S210: Yes), a sufficient amount of water has been collected in the storage tank 3 to completely pulverize and discharge filth and toilet paper. The process proceeds to the operation of the discharge process 2.
First, the control unit 10 switches the switching valve 5c to the toilet side by the flow path switching unit 16, and then opens the water supply valve 5 by the water supply control unit 15 and starts cleaning the toilet 1 again (S216). At the same time, the motor 4 is driven by the motor drive unit 14 (S217), and filth and toilet paper are crushed by the cutter 4b attached to the rotating shaft of the motor 4, pumped by the impeller 4c, and discharged to the outside through the water distribution pipe 4d. The Then, when water in the storage tank 3 or crushed filth is drained to the vicinity of the lower open end 7b of the hollow pipe 7a and the water level sensor 7 detects that the water level is less than 20 mm (S218), the motor drive unit 14 causes the motor 4 to The drive is stopped and the drainage is finished (S219). Then, the toilet 1 is washed while draining the water, filth, and toilet paper accumulated in the storage tank 3, and the pulse signal detected by the water amount sensor 6 is sent to the control unit 10 via the water amount detection unit 12. Is calculated by calculating the flow rate supplied to the toilet 1 by counting the number of pulses, and the total water supply amount after opening the water supply valve 5 is learned from the process described later from 2.5L. When the water amount is equal to or greater than the amount obtained by subtracting (S220), the water supply control unit 15 drives the water supply valve 5 to close (S221). Further, the control unit 10 learns the water supply amount until the water supply is completely stopped after the water supply valve 5 is driven to close in a post-closed water supply amount storage process described later (S222). And the control part 10 switches the switching valve 5c to the storage tank side by the flow-path switching part 16 (S223), and complete | finishes washing | cleaning of the toilet bowl 1. FIG.

  Thereafter, the control unit 10 opens the flap valve 9 by the drainage control unit 17, discharges water and filth collected in the toilet 1 to the storage tank 3, and then closes the flap valve 9 to store the toilet 1. The connection with the tank 3 is blocked (S224). And the control part 10 reads the signal detected by the water level sensor 7 at 0.5 second intervals via the water level detection part 13, and the water level in the present storage tank 3 is calculated by the moving average of the detection data for the latest four times. Calculate and check the current water level (S225). At this time, the water supplied to the toilet 1 by opening the water supply valve 5 is 2.5 liters. However, with this amount of water, the water level in the storage tank 3 is less than 100 mm, which is caused by dirt. Even when the rise of the water level is very large, the water level does not rise more than 100 mm. This is because water is supplied from the beginning, and the water level rises significantly due to filth etc., preventing the water from being used more than necessary and wasting water. This is to prevent water from overflowing from 1 or the storage tank 3 or too much water, thereby increasing the load on the pump and causing failure. In addition, the water level of the storage tank 3 this time is set to 100 mm and higher than the water level 80 mm at the start of the first motor (pump) 4 drive. Since dirt adheres to the draft surface of the tank 3, the second water supply is to remove the dirt on the draft surface of the storage tank 3 by raising the water level from the draft surface.

  Therefore, since the water level in the storage tank 3 at this time is usually less than 100 mm in the normal case (S225: No), the target water supply amount required for the water level to be 100 mm is calculated in the target water supply amount calculation process described later. The amount is calculated (S226), and the water supply valve 5 is opened by the water supply valve control unit 15 to start water supply to the storage tank 3 (S227). Then, it is checked whether or not the water supply amount after updating the target water supply amount is equal to or greater than the target water supply amount (S228). If the water supply amount is less than the target water supply amount (S228: No), the target water supply amount calculation process is performed again. (S226), the water supply valve 5 is kept open (S227), and the water supply to the storage tank 3 is continued. In this way, while constantly updating the target water supply amount, water supply to the storage tank 3 is continued until the water supply amount detected by the water amount sensor 6 becomes equal to or higher than the target water supply amount, and the control unit 10 becomes equal to or higher than the target water supply amount. (S228: Yes), the water supply valve controller 15 drives the water supply valve 5 to close (S229), and after the water supply valve 5 is driven to close in the post-closed water supply amount storage process described later, the water supply is completely stopped. The amount of water supply until the first time is learned (S230).

  In this way, water is supplied until the water level in the storage tank 3 reaches 100 mm, or when the drainage from the toilet 1 to the storage tank 3 is completed and the water supply to the storage tank 3 is completely stopped, When the water level is 100 mm or more (S225: Yes), the control unit 10 starts driving the motor 4 by the motor driving unit 14 (S231), and the cutter 4b attached to the rotating shaft of the motor 4 removes dirt and The toilet paper is pulverized, pumped by the impeller 4c, and discharged to the outside through the water distribution pipe 4d. Then, water in the storage tank 3 or crushed filth is drained to the vicinity of the lower open end 7b of the hollow tube 7a, and when the water level sensor 7 detects that the water level is less than 20 mm (S232), the motor drive unit 14 causes the motor 4 to The drive is stopped and the drainage is finished (S233).

  Thereafter, since the external sewage and the storage tank 3 communicate with each other through the water distribution pipe 4d, the control unit 10 prevents the odor and animals from entering the room by storing water in the storage tank 3. The water supply valve 5 is opened again by the water supply valve control unit 15 while the switching valve 5c is kept on the storage tank side, and water is supplied to the storage tank 3 (S234). And the control part 10 receives the pulse signal detected by the water quantity sensor 6 via the water quantity detection part 12, calculates the flow volume supplied to the storage tank 3 by counting the number of pulses, opens the water supply valve 5 and opens. When the total water supply amount from 1.7L is equal to or greater than the water amount obtained by subtracting the post-close water amount learned by the processing described later from 1.7L (S235), the water supply control unit 15 drives the water supply valve 5 to close, and the storage tank 3 Water drainage is terminated (S236). Then, the water supply amount is learned until the water supply is completely stopped after the water supply valve 5 is driven to close in the post-closed water supply amount storage process described later (S237).

  Next, the target water supply amount calculation process will be described with reference to the flowchart of FIG. 5 and 6, when the water level in the storage tank 3 is less than 100 mm when drainage from the toilet 1 to the storage tank 3 is completed (S209 to S210), there is a shortage. In order to supply water corresponding to the water level to the storage tank 3, first, it is checked whether or not the target water supply amount calculation waiting timer is 0 (S301), but when this processing routine is first executed, this timer is 0. (S301: Yes), in order to measure the next calculation timing, the target water supply amount calculation waiting timer is set to 0.5 seconds and the timer is started (S302). Then, the difference between the target water level of 80 mm (or 100 mm) and the current water level is stored as a water level difference (S303). Next, the amount of water necessary to make the water level 80 mm (or 100 mm) is calculated from the area of the current water level portion of the storage tank 3 and the previously stored water level difference, and stored as an insufficient water amount (S304). Then, the target water amount is calculated by subtracting the post-closed water supply amount obtained in the post-closed water supply amount storage process described later from the insufficient water amount (S305).

  In this way, this processing routine is ended, returning to the filth discharge processing routine, water supply to the storage tank 3 is started, and if the water amount detected by the water amount sensor 6 has not reached the currently calculated target water amount, the process is repeated. 7 is performed, but if the target water amount is within 0.5 seconds after the target water amount is updated, the target water amount calculation waiting timer is not 0 (S301: No), and no processing is performed. The process ends without returning to the filth discharge processing routine. When 0.5 second has elapsed since the last update of the target water amount and this processing routine is executed again (S301: Yes), the difference between the target water level of 80 mm (or 100 mm) and the current water level is stored. The target water amount is calculated from the learning value of the amount of water until the water supply is actually stopped after the area of the tank 3 and the water supply valve 5 are closed (S303 to S305). By repeating this operation, the water level of the storage tank 3 is calculated. The target water amount for setting the value to 80 mm (or 100 mm) is updated every 0.5 seconds. Here, the target water amount is updated at a cycle of 0.5 seconds because the calculation of the current water level reads the signal detected by the water level sensor 7 through the water level detection unit 13 at intervals of 0.5 seconds, This is because the water level in the current storage tank 3 is calculated based on the moving average of the detection data for the latest four times and is updated every 0.5 seconds.

  In this way, water is supplied based on the detected flow rate of the water amount sensor 6 until the water level in the storage tank 3 is 80 mm (or 100 mm) necessary for reliably crushing and discharging filth and toilet paper. In addition, due to the delay time until the current water level is updated by the detection value of the water level sensor 7, it is possible to continue water supply even when the water level becomes 80 mm (or 100 mm) or more, and to prevent water from being stored in the storage tank 3 more than necessary. it can.

  Next, a post-closed water supply amount storage process for learning the amount of leakage from when the water supply valve 5 is driven to close until the water actually stops will be described with reference to the flowchart of FIG. In the water irrigation process and the filth discharge process described with reference to FIGS. 4, 5, and 6, the control unit 10 performs this process every time after the water supply valve 5 is driven to close by the water supply valve control unit 15. First, after the three water supply valves 5 have been driven to close the last time, the amount of water that has been supplied is sequentially closed, the water amount 2 after closing to the water amount 3 after closing, the water amount 1 after closing to the water amount 2 after closing, and the water amount 0 after closing after closing Substituting into the amount of water 1 (S401). Then, it waits until the pulse output from the water amount sensor 6 disappears and the instantaneous flow rate becomes 0 (S402), and the water supply valve 5 is calculated from the total water supply amount up to the present time after opening the water supply valve 5 and starting water supply. The total amount of water supply from when the water supply is started after the water supply valve 5 is closed to the time when the water supply valve 5 is driven to close is subtracted, and the amount of leakage from when the water supply valve 5 is driven to close until the water actually stops is calculated and closed. It memorize | stores as the amount of post-water 0 (S403). Then, the average of the latest post-closed water amount 0 and the past three post-closed water amounts 0 to 3 is obtained, and the post-closed water amount is calculated as a predicted value of the leakage amount when the water supply valve 5 is driven to close during the next water supply. (S404).

  In this way, when water is supplied next by the moving average of the amount of water supplied from when the water supply valve 5 is driven to close in the past four times until the flow rate actually detected by the water amount sensor 6 becomes zero. By predicting the amount of water supply from when the water supply valve 5 is closed to the time when the water supply is completely stopped, by stopping the water supply earlier by the predicted amount, It is possible to supply water to the storage tank 3 for washing after the stool and pulverizing and discharging filth and toilet paper, and to supply water as much as necessary, and save water without supplying more water than necessary. It becomes possible.

  A specific example of the operation of the pressure-flush flush toilet apparatus when controlled according to the above flowchart will be described with reference to the timing chart of FIG. 9 and the water level change in the apparatus of FIG.

  First, when no one is using, water is not stored in the toilet 1 as shown in FIG. 10A, and 50 mm of water is already stored in the storage tank 3, so that the water level sensor 7 A signal corresponding to 50 mm is output. And if a user operates a switch before a toilet, supply of the pool water to the toilet bowl 1 will be started. First, the switching valve 5c is switched to the toilet 1 side, and the water supply valve 5 is driven to open, and water supply to the toilet 1 is started. At this time, since 50 mm of water has already accumulated in the storage tank 3, A signal corresponding to 50 mm is output from the water level sensor 7. When the water supply to the toilet 1 is started, a pulse signal corresponding to the water supply amount is sent from the water amount sensor 6 and the number of pulses is integrated from the start of the water supply before the water supply amount becomes 1.4 liters (1. The water supply valve 5 is driven to close when the amount of water obtained by subtracting the amount of leakage after the water supply valve 5 is driven to close from 4 liters). Even after the water supply valve 5 is driven to close, a small amount of water leaks until the water supply valve 5 completely stops, so that 1.4 liters of water is finally supplied to the toilet 1, Supply is complete. When the supply of pooled water is completed, the switching valve 5c is switched to the storage tank 3 side. At this time, since the water is not supplied to or drained from the storage tank 3, the signal of the water level sensor 7 does not change from the initial 50 mm. Therefore, the state of the water accumulated in the apparatus at this time is such that 1.4 liters of water is accumulated in the toilet 1 and 50 mm of water is accumulated in the storage tank 3 as shown in FIG. It has become.

  Next, after the stool, when the user operates the switch, the discharge of filth starts. First, the switching valve 5c is switched to the toilet 1 side, the water supply valve 5 is driven to open, and water supply to the toilet 1 is started. At this time, the motor (pump) 4 is driven to discharge the water stored in the storage tank 3 for sealing water. When the signal from the water level sensor 7 is equivalent to a water level of 20 mm while supplying water to the toilet 1 and draining the storage tank 3, the driving of the motor (pump) 4 is stopped, but the motor (pump) 4 is inertial. Since the water in the storage tank 3 is drained during the rotation, the signal of the water level sensor 7 further falls below the equivalent of 20 mm, and the water is discharged to the lower end 7b of the hollow pipe 7a. The pressure applied to the water level sensor 7 is the same as that of the atmosphere, and the signal of the water level sensor 7 is constant. After that, water supply to the toilet 1 is continued, but before the integrated flow detected by the water amount sensor 6 from the start of water supply reaches 1.2 liters (from 1.2 liters to the leakage after the water supply valve 5 is closed) When the amount of water drawn is reached), the water supply valve 5 is driven to close. Even after the water supply valve 5 is driven to close, a small amount of water leaks until the water supply valve 5 is completely stopped, so that 1.2 liters of water is finally supplied to the toilet 1. Washing is complete. And when washing of toilet 1 is completed, change-over valve 5c will be changed to the storage tank 3 side. At this time, as shown in FIG. 10C, the state of the water stored in the apparatus is that 2.6 liters of water is stored in the toilet 1 and there is almost no water in the storage tank 3. It has become.

  Thereafter, when the flap valve 9 is opened and closed, the sewage and filth in the toilet bowl 1 are discharged toward the storage tank 3, so that the signal detected by the water level sensor 7 rises to a level equivalent to about 80 mm. When the detection signal of the water level sensor 7 is insufficient at 80 mm, the necessary water supply amount (target water supply amount) is calculated from the insufficient water level, and the water supply valve 5 is opened to supply water to the storage tank 3. Is started. Then, while supplying water to the storage tank 3, the necessary water supply amount (target water supply amount) is sequentially calculated from the insufficient water amount at that time, and the integrated flow rate detected by the water amount sensor 6 after the target water supply amount is updated is calculated. When the amount of water is obtained by subtracting the amount of leakage after the water supply valve 5 is driven to close from the target water supply amount, the water supply valve 5 is driven to close. Even after the water supply valve 5 is driven to close, a small amount of water leaks until the water supply valve 5 completely stops, so that water is finally supplied until the water level in the storage tank 3 reaches 80 mm. As shown in FIG. 10D, the toilet 1 has no water and the storage tank 3 has 80 mm of water as shown in FIG.

  Thereafter, the switching valve 5c is switched to the toilet 1 side, the water supply valve 5 is driven to open, and water supply to the toilet 1 is started. At this time, when the motor (pump) 4 is driven to crush the filth in the storage tank 3, and the water level in the storage tank 3 is gradually lowered when it is pumped and discharged to the outside, the water level sensor 7 detects it. When the signal gradually decreases and the signal of the water level sensor 7 becomes equivalent to a water level of 20 mm, the drive of the motor (pump) 4 is stopped, but while the motor (pump) 4 is rotating by inertia, the storage tank 3 Since the water in the inside is drained, the signal of the water level sensor 7 is further lowered from the equivalent of 20 mm, and when the water is discharged to the lower end 7b of the opening of the hollow tube 7a, the pressure applied to the water level sensor 7 is the same as the atmosphere. The signal of the water level sensor 7 is constant. Thereafter, water supply to the toilet 1 is continued, but before the integrated flow detected by the water amount sensor 6 from the start of water supply becomes 2.5 liters (from 2.5 liters to the leakage after the water supply valve 5 is closed) When the amount of water drawn is reached), the water supply valve 5 is driven to close. Even after the water supply valve 5 is driven to close, a small amount of water leaks until the water supply valve 5 is completely stopped, so that 2.5 liters of water is finally supplied to the toilet 1. Washing is complete. And when washing of toilet 1 is completed, change-over valve 5c will be changed to the storage tank 3 side. The state of the water stored in the device at this time is 2.5 liters of water on the toilet 1 side as shown in FIG. 10 (e), and there is almost no water in the storage tank 3. It is in a state.

  Thereafter, when the flap valve 9 is opened and closed, the sewage and filth in the toilet bowl 1 are discharged toward the storage tank 3, so that the signal detected by the water level sensor 7 rises to a position corresponding to a position slightly lower than the water level 100 mm. When the detection signal of the water level sensor 7 is insufficient to 100 mm, the necessary water supply amount (target water supply amount) is calculated from the insufficient water level, and the water supply valve 5 is driven to open to supply water to the storage tank 3. Is started. Then, while supplying water to the storage tank 3, the necessary water supply amount (target water supply amount) is sequentially calculated from the insufficient water amount at that time, and the integrated flow rate detected by the water amount sensor 6 after the target water supply amount is updated is calculated. When the amount of water is obtained by subtracting the amount of leakage after the water supply valve 5 is driven to close from the target water supply amount, the water supply valve 5 is driven to close. Even after the water supply valve 5 is driven to close, a small amount of water leaks until the water supply valve 5 completely stops, so that water is finally supplied until the water level in the storage tank 3 reaches 100 mm. As shown in FIG. 10F, the toilet 1 has no water and the storage tank 3 has 100 mm of water, as shown in FIG.

  After that, when the motor (pump) 4 is driven to crush the filth in the storage tank 3 and when it is pumped and discharged to the outside, the water level in the storage tank 3 gradually decreases, so the signal detected by the water level sensor 7 is also When the signal gradually decreases and the signal from the water level sensor 7 is equivalent to a water level of 20 mm, the drive of the motor (pump) 4 is stopped, but while the motor (pump) 4 is rotating by inertia, Since the water is drained, the signal of the water level sensor 7 is further lowered below the equivalent of 20 mm, and when the water is discharged to the lower end 7b of the hollow tube 7a, the pressure applied to the water level sensor 7 becomes the same as the atmosphere and the water level The signal of the sensor 7 is constant, and the state of the water accumulated in the apparatus at this time is that there is no water in the toilet 1 and almost no water in the storage tank 3 as shown in FIG. It will be in a state.

  Finally, in order to store the sealing water for cutting off the sewage in the storage tank 3, the water supply valve 5 is driven to open, and water supply to the storage tank 3 is started. At this time, in addition to the signal from the water amount sensor 6, the detection signal of the water level sensor 7 also changes according to the amount of water supply. Then, when the integrated flow rate detected by the water amount sensor 6 from the start of water supply becomes a water amount obtained by subtracting the leakage amount after the water supply valve 5 is driven to close from 1.7 liters, the water supply valve 5 is driven to close. Even after the water supply valve 5 is driven to close, a small amount of water leaks until the water supply valve 5 completely stops, so that 1.7 liters of water is finally supplied to the storage tank 3 and sealed. Is accumulated, and the waste discharging operation is completed. The state of the water level in the apparatus at the time when the series of operations is completed is nothing on the toilet 1 side as shown in FIG. 10 (h), and 50 mm of water is collected on the storage tank 3 side.

In this way, the pressure-flushing flush toilet device is controlled so that the amount of water necessary to pulverize and discharge the filth can be accurately supplied, so that the filth cannot be completely pulverized and discharged due to insufficient water supply. In addition to preventing failure, it is possible to save water by not supplying more water than necessary.

The block diagram showing the 1st Example of the pressure-feed type flush toilet apparatus of this invention. The block diagram showing the 2nd Example of the pressure-feed type flush toilet apparatus of this invention. The block diagram showing the structure of the control apparatus of this invention. The flowchart showing the content of the operation for water before using the toilet bowl of this invention. The flowchart showing the content of the filth discharge process of this invention. The flowchart showing the content of the filth discharge process 2 of this invention. The flowchart showing the content of the target water amount calculation process of this invention. The flowchart showing the content of the water supply amount storage process after closing of this invention. The timing chart showing the operation timing of the pressure-feed type flush toilet apparatus of this invention. The figure of the water level change in the apparatus of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Toilet 2 ... Discharge port 3 ... Storage tank 4 ... Motor 4a ... Grinding chamber 4b ... Cutter 4c ... Impeller 4d ... Water distribution pipe 5 ... Water supply valve 5a ... Water supply pipe 5b ... Water supply pipe for storage tank 5c ... Switching valve 6 ... Flow rate Sensor 7 ... Water level sensor 7a ... Hollow pipe 7b ... Opening lower end of hollow pipe 8 ... Control device 9 ... Flap valve 10 ... Control part (CPU)
DESCRIPTION OF SYMBOLS 12 ... Water quantity detection part 13 ... Water level detection part 14 ... Motor drive part 15 ... Water supply valve control part 16 ... Flow path switching part 17 ... Drainage control part

Claims (4)

A toilet and a water supply pipe for supplying pooled water to the bowl of the toilet;
Water supply means for controlling supply of the pooled water;
A storage tank for temporarily storing and crushing the pooled water and filth discharged from the toilet;
Drainage means for discharging the pooled water and filth toward the storage tank;
Water level detection means for detecting the water level of the storage tank;
A pumping means for pumping the pool water and filth of the storage tank to the outside;
Control means for controlling the water supply means, the drainage means, and the pumping means;
In a pressure-fed flush toilet device comprising:
The storage tank has a pumping drive water level set to a level at which filth can be completely crushed and discharged at a water level larger than the amount of pool water, and the drainage means is driven to remove the pool water and filth from the toilet. After discharging into the storage tank, if the detection of the water level detection means is less than the pumping drive water level, water is supplied to the storage tank so that the water level in the storage tank is equal to or higher than the pumping drive water level, and then A pressure-feed type flush toilet apparatus , wherein the pressure-feeding means is driven and pumped to the outside. In the pressure-feed type flush toilet apparatus according to claim 1,
A water supply switching means provided downstream of the water supply means and switching the flow path between the toilet and the storage tank; and a storage tank water supply pipe for supplying water to the storage tank via the water supply switching means. ,
After the drainage means is driven and the pool water and filth are discharged from the toilet bowl to the storage tank, the water supply means and the water supply switching means are controlled when the detection of the water level detection means is less than the pumping drive water level. Then, a pressure-feed type flush toilet apparatus is provided that supplies water to the storage tank. In the pressure-feed type flush toilet apparatus according to claim 2,
Water amount detecting means for detecting the amount of water in the water supply pipe,
During the water supply to the storage tank, the control means calculates a target water supply amount from a water level difference between the output of the water level detection means and the pumping drive water level, and when the output of the water amount detection means matches the target water supply amount, A pressure-fed flush toilet apparatus, wherein the water supply means is driven to stop water supply. In the pressure-feed type flush toilet apparatus according to claim 3,
It said control means, pumping type flush toilet apparatus characterized by calculating and updating the target supply amount of water in accordance with the output of the water level detecting means with a predetermined period.

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