JP2016102391A - Water storage tank - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress erroneous setting of a water supply condition while shortening time required for preparation of a water storage tank.SOLUTION: A water storage tank comprises: a tank main body 4A that stores water and can be freely attached to a plurality of types of water closets 2; supply means for supplying, on the basis of a set supply condition, water in the tank main body 4A to a water closet 2A to which the tank main body 4A is attached out of the plurality of types of water closets 2; acquisition means 64 for acquiring information on the water closet 2A to which the tank main body 4A is attached; determination means 66 for determining a type of the water closet 2A on the basis of the information acquired by the acquisition means 64; and setting means 68 for setting, on the basis of the type of the water closet 2A determined by the determination means 66, a supply condition of supply means 62 to be a condition suitable for the type.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a water storage tank used in a flush toilet.

  2. Description of the Related Art A storage tank type flush toilet that is washed with washing water stored in a water storage tank and discharges filth is known. There are a plurality of types of flush toilets, each having different amounts of washing water, drainage characteristics, sealed water amount, and the like.

  In such a situation, when replacing only the water tank from the existing flush toilet with the water tank attached, after confirming the serial number of the existing flush toilet used by the contractor, the existing flush toilet In order to prevent the deterioration of the washing performance due to the replacement of the water storage tank after placing an order for a water storage tank suitable for the type of toilet bowl and attaching the water tank obtained by ordering to the existing flush toilet, Water supply conditions suitable for the type of toilet bowl had to be set manually.

  Regarding the setting of this supply condition, for example, in Patent Document 1, the water level in the water storage tank is lowered from the initial water level before the start of cleaning to a predetermined water level so that the cleaning performance is not impaired by the manufacturing error of the flush toilet. A technique is disclosed in which the water level lowering time is measured and the water discharge flow rate of the cleaning water is adjusted based on the measured water level lowering time.

JP 2012-132167 A

  However, in the technique described in Patent Document 1, there is one instantaneous flow rate that serves as a reference value for adjusting the water discharge flow rate, one pressure pump for adjusting the water discharge flow rate, or the like. Since the water storage tank is assumed to be attached to one type of flush toilet, the water storage tank could not be used in common for multiple flush toilets. Even if the water storage tank can be used in common, the supply conditions such as the amount of toilet flushing water and the amount of refill water differ depending on the type of flush toilet, so the water supply conditions suitable for the type of flush toilet used must be manually set. Had to set. In these cases, the time and labor required to prepare the water tank for use, such as ordering and setting the water tank, increase the load on the installer, and there is a risk that the water supply conditions may be set incorrectly.

  Therefore, the present invention has been made to solve the above-described problems, and one of the objects is to reduce the time and labor required for preparation of the water storage tank and to prevent erroneous setting of water supply conditions. It is said.

  The water storage tank according to the first aspect of the present invention includes a tank main body that stores water and can be freely attached to a plurality of types of flush toilets, and water in the tank main body based on set supply conditions. Supply means for supplying to the flush toilet with the tank body attached thereto, obtaining means for obtaining information on the flush toilet with the tank body attached, and the obtaining means Based on the acquired information, the determination means for determining the type of the flush toilet, and the supply condition of the supply means is suitable for the type based on the type of the flush toilet that the determination means has determined. Setting means for setting to the same.

In this configuration, since the tank body for storing water can be freely attached to multiple types of flush toilets, the storage tank can be used in common for multiple types of flush toilets. In the case of replacing only the irrigation tank, it is possible to place an order for a common water storage tank suitable for the type of the existing flush toilet without checking the serial number of the existing flush toilet to be used on site. As a result, the time and labor required for installing the water storage tank can be reduced.
In the configuration of the water storage tank according to the first aspect of the present invention, the type of flush toilet based on the acquisition means for acquiring information related to the flush toilet attached with the tank body, and the information acquired by the acquisition means Therefore, when setting the supply conditions, the type of the flush toilet is automatically discriminated even if the construction person looks at the flush toilet and does not know the type. In the configuration of the water storage tank according to the first aspect of the present invention, the setting means sets the supply condition of the supply means to be suitable for the type based on the type of flush toilet determined by the determination means. Therefore, it is possible to save the labor of the installer during the setting. Moreover, since the setting means performs the setting without manually setting, it is possible to suppress erroneous setting of the water supply condition.
Therefore, according to the configuration of the water storage tank according to the first aspect of the present invention, it is possible to reduce the time and labor required for installing the water storage tank and to suppress erroneous setting of the water supply conditions.

  In the water storage tank according to the second aspect of the present invention, in the first aspect, the acquisition means acquires the pressure loss of the flush toilet based on a measurement time related to a change in the water level in the tank body.

  Since the pressure loss is likely to vary depending on the type of flush toilet, if the discriminating means can discriminate the type of flush toilet based on the pressure loss calculated by the acquiring means as in this configuration, the flush toilet Compared with the case where it discriminate | determines based on the other information which concerns on, it can discriminate | determine the flush toilet more correctly.

  The water storage tank according to a third aspect of the present invention is the water storage tank according to the second aspect, further comprising a valve body that adjusts a water supply amount when water is supplied to the tank body, and the setting means supplies water according to a usage time of the valve body. The flow amount fluctuation amount is calculated, and the supply condition calculated based on the fluctuation amount is set.

  According to this configuration, since the supply condition calculated based on the fluctuation amount is set, the set supply condition can be made more appropriate.

  In the water storage tank according to a fourth aspect of the present invention, in the third aspect, the supply condition includes a supply time of the supply means, the acquisition means acquires one of the supply water flow rates based on the measurement time, and After setting the supply time, obtain the other feed water flow rate due to use of the valve body, the setting means calculates the difference by calculating the difference between the other feed water flow rate and the one feed water flow rate, The corrected supply time is set.

  According to this configuration, an appropriate supply time can be set even when fluctuations occur in the feed water flow rate.

  In the water storage tank according to the fifth aspect of the present invention, in any one of the first to fourth aspects, the acquisition means acquires two or more types of information as the information related to the flush toilet. .

  According to this configuration, the discriminating means can discriminate flush toilets that cannot be distinguished by only one type of information.

  In the water storage tank according to the sixth aspect of the present invention, in any one of the first aspect to the fifth aspect, the acquisition means is an input in which a part of the information related to the flush toilet is manually input. Including means.

  In this configuration, even when the flush toilet toilet part number disappears from the flush toilet and cannot be confirmed, information on the flush toilet such as the appearance and interior of the flush toilet, the size of the sealed surface, how to supply water, etc. The installer can know if he goes to the site. When the operator inputs such information with the input unit, the type of the flush toilet is determined by the determination unit, and the supply condition is set by the setting unit. Thereby, even if it does not newly provide the sensor etc. which acquire automatically the information which concerns on the flush toilet, an acquisition means can be comprised. Moreover, even if there is a sensor or the like, if there is an input means in addition to this, the determination means can determine based on a plurality of pieces of information, so that the flush toilet can be determined more accurately.

  In the water storage tank according to the seventh aspect of the present invention, in the first aspect, each of the plurality of types of flush toilets is provided with a tag embedded with identification information, and the acquisition means includes the tank body. When attached to the flush toilet, the identification information as the information relating to the flush toilet is obtained by reading the tag.

  According to this configuration, since the acquisition unit acquires the identification information of the flush toilet, the determination by the determination unit is easier and more accurate.

  In the water storage tank according to the eighth aspect of the present invention, in any one of the first aspect to the seventh aspect, the discriminating means and the setting means store the flush toilet previously stored during each processing. Refer to the reference information for each type.

  According to this configuration, the process can be performed accurately and quickly by referring to the reference information during the determination process of the determination unit and the setting unit of the setting unit.

  According to the water storage tank of the present invention, it is possible to reduce the time required for installation of the water storage tank and to suppress erroneous setting of water supply conditions.

It is the schematic of the toilet apparatus containing the water storage tank which concerns on 1st embodiment of this invention. (A) is the schematic which shows a mode that the water storage tank is attached to the flush toilet. (B) is the schematic which shows a mode that the water storage tank is attached to the flush toilet of the kind different from (A). (C) is the schematic which shows a mode that the water storage tank is attached to the flush toilet of the kind different from (A) and (B). It is a block diagram which shows roughly the functional structure of a water storage tank. It is a related figure of the water level rise time of a water storage tank and the water supply flow volume of a water supply device calculated | required beforehand, when applying a water storage tank, a water supply apparatus, and a drainage apparatus to arbitrary flush toilets. It is a related figure of the 1st feed water flow rate of a water supply apparatus, and the water level rise time of a storage tank calculated | required beforehand in the case of applying a water storage tank, a water supply apparatus, and a drainage device to a reference toilet. It is a figure which shows an example of a discrimination | determination reference table. It is a figure which shows an example of a supply condition reference table. It is a flowchart which shows the flow of each process of an acquisition means, a discrimination means, and a setting means in the process of each function structure. It is a flowchart of the subroutine which concerns on the pressure loss acquisition of step SP12 shown in FIG. It is a time chart which shows operation | movement of an acquisition means. It is a related figure of the toilet pressure loss coefficient and the valve opening time of the drainage device. It is a figure which shows an example of an identification information reference table. It is a figure which shows the relationship between water supply time and a water supply flow volume. It is a flowchart of the subroutine which concerns on the supply condition setting of step SP20 shown in FIG.

  Hereinafter, a plurality of embodiments of the present invention will be described with reference to the accompanying drawings. In order to facilitate the understanding of the description, the same constituent elements in the drawings will be denoted by the same reference numerals as much as possible, and redundant description will be omitted.

<First Embodiment>
――― Overall configuration of toilet device ―――
First, the whole structure of the toilet apparatus including the water storage tank according to the first embodiment of the present invention will be described.

  FIG. 1 is a schematic view of a toilet apparatus including a water storage tank according to the first embodiment of the present invention.

  As shown in FIG. 1, a toilet apparatus 1 is attached to a ceramic flush toilet 2 and a rear part of the flush toilet 2, stores flush water used for toilet flushing, and supplies the flush toilet 2 with water. The water storage tank 4 is provided. This toilet device 1 is a so-called wash-off type in which wash water is supplied from a water storage tank 4 and sewage is washed away by flowing water due to a drop of water in the bowl portion 6 of the flush toilet 2.

  The flush toilet 2 has a bowl portion 6, a water conduit 8, a supply port 10, and a drain trap conduit 12.

  The bowl part 6 is formed on the front side of the upper part of the flush toilet 2, and a water guide channel 8 is formed on the upper part on the rear side of the bowl part 6. Further, a water discharge port 10 to which cleaning water is supplied from the water conduit 8 is formed at the center lower part of the bowl portion 6, and the cleaning water supplied from the water storage tank 4 into the water conduit 8 is supplied to the bowl portion 6. The water outlet 10 is led. Further, a drain trap conduit 12 communicating with the bowl portion 6 is formed below the water conduit 8, and the wash water is discharged from the spout 10 toward the drain trap conduit 12.

  An rim 14 having an overhang shape is formed on the upper edge of the bowl portion 6, and a rim water discharge port 16 to which cleaning water is supplied from the water conduit 8 is formed in the rim 14. The cleaning water descends while swirling. The bowl portion 6 can be cleaned.

  At the bottom of the water storage tank 4 located above the water conduit 8 of the flush toilet 2, a drain port 18 is formed which communicates with the water conduit 8 of the flush toilet 2 and drains the wash water in the water tank 4. ing.

  The water storage tank 4 includes a box-shaped tank main body 4A for storing cleaning water therein, a water supply device 20 for supplying cleaning water from a water source such as a water supply into the tank main body 4A, and a tank in the water conduit 8 of the flush toilet 2. A drainage device 22 for draining the cleaning water stored in the main body 4A from the drainage port 18 is provided. Furthermore, the water storage tank 4 includes a float switch 24 that is a water level sensor that detects the water level in the tank body 4A, and a control that controls the operation of the water supply device 20 and the drainage device 22 based on the water level information detected by the float switch 24. Device 26.

  The water supply apparatus 20 includes a water supply pipe 28, a water supply valve 30, and a water supply port 32 from the upstream side.

  A constant flow valve 34 is provided on the upstream side of the water supply pipe 28, and a water stop cock 36 is provided on the upstream side of the constant flow valve 34. Connected to a water supply source (not shown).

  The water supply valve 30 is an electromagnetic valve, and the opening / closing operation of the water supply valve 30 is controlled by a command from the control device 26 based on the water level detection information of the float switch 24 that detects the water level in the tank body 4A. Supplying or stopping of the cleaning water from the water supply port 32 into the tank body 4A can be switched.

  Next, the drainage device 22 includes a cylindrical overflow pipe 38, a valve member 40 provided integrally with a lower portion of the overflow pipe 38, and a rotation driving device 42, and an upper end portion of the overflow pipe 38. Is connected to the rotation shaft 42 a of the rotation drive device 42 via a ball chain 44. Further, the rotation drive device 42 has a built-in motor (not shown) for driving the rotation shaft 42a, and the operation of this motor (not shown) is controlled by the control device 26. Yes.

Furthermore, the control device 26 is connected to an operation button 46 for a user to instruct a cleaning operation. When a signal indicating that the user has operated the operation button 46 is transmitted to the control device 26, a motor (not shown) of the rotation drive device 42 is operated, the rotation shaft 42a rotates, and the rotation shaft 42a rotates in the rotation direction. Accordingly, the overflow pipe 38 and the valve member 40 are moved up and down. More specifically, when the rotating shaft 42a rotates in a predetermined direction, the overflow pipe 38 and the valve member 40 are pulled up together with the ball chain 44 for a predetermined time, and the drain port 18 is opened. Further, the larger the amount by which the overflow pipe 38 and the valve member 40 are pulled up, the longer the valve opening time of the drainage device 22, and accordingly, the amount of washing water drained from the tank body 4A to the water conduit 8 of the flush toilet 2 is increased. It is becoming more.
On the other hand, when the rotating shaft 42a rotates in the direction opposite to the predetermined direction, the overflow pipe 38 and the valve member 40 are lowered with the lowering of the water level in the tank body 4A, and the drain port 18 is closed by the valve member 40. Yes.

  In the drainage device 22 of the present embodiment, a so-called direct acting drainage valve in which the overflow pipe 38 and the valve member 40 are moved up and down by opening the rotary shaft 42a of the rotary driving device 42 to open and close the drainage port 18. However, the form of a flapper drain valve may be applied, or a form of draining with a pump may be applied.

  Here, when the drain port 18 is opened and the water level in the tank body 4A is lowered, the washing water remaining in the tank body 4A when the valve member 40 closes the drain port 18 is obtained. The water level is the dead water level DWL1. Further, in the normal washing operation of the flush toilet 2, the water level in the tank body 4A is brought into contact with the float switch 24 by the water supply from the water supply device 20 from the state where the water level in the tank body 4A is the dead water level DWL1. The water supply by the water supply device 20 is stopped when it rises. Incidentally, the water level DWL2 in the tank main body 4A in FIG. 1 indicates the water level (DWL2 = 0) when the tank main body 4A is empty. The time for the water level to rise from the dead water level DWL1 in the tank main body 4A to the still water level WL by water supply by the water supply device 20 is, for example, 25 to 75 seconds.

  Further, the control device 26 controls the driving of the rotating shaft 42a of the rotation driving device 42 in accordance with the cleaning mode command from the operation button 46, and raises the valve member 40 to open the drain port 18 of the tank body 4A. By controlling the valve opening time, the amount of washing water drained from the drain port 18 of the tank body 4A to the water conduit 8 of the flush toilet 2 is controlled. By the way, the operation button 46 has a “large washing mode” for washing with the largest washing water amount, a “small washing mode” for washing with a washing water amount smaller than the washing water amount in the large washing mode, and a washing water amount in the small washing mode. In addition, a cleaning mode switching button (not shown) is provided for selecting and switching one of the three types of “eco small cleaning mode” for cleaning with a small amount of cleaning water.

  In the present embodiment, the amount of time for raising the valve member 40 of the drainage device 22 from the drain port 18 of the tank body 4A to the water conduit 8 of the flush toilet 2 is increased to 3 times By setting the stage, three types of toilet cleaning can be performed in the large cleaning mode, small cleaning mode, and eco small cleaning mode. However, the types of cleaning modes are not limited to three, and large cleaning is possible. A toilet that performs only the mode may be used, or a toilet that performs two types of modes, the large washing mode and the small washing mode.

  Furthermore, the control device 26 includes a time measuring device 48 that can measure the water level rising time when the water level in the tank body 4A is rising, and based on the water level rising time measured by the time measuring device 48. The control for detecting the pressure loss of the flush toilet 2 installed at each construction site (hereinafter referred to as “toilet pressure loss learning control”), which will be described in detail later, can be performed. Thereby, after the flush toilet 2 is installed in each construction site, before the practical use of the toilet is started, the pressure loss of the flush toilet 2 for each flush toilet 2 (in particular, the water conduit 8). It is also possible to function as an adjusting means for appropriately adjusting the driving time of the rotary driving device 42 of the drainage device 22 and the valve opening time of the valve member 40 according to the pressure loss).

  Furthermore, the control device 26 includes a notification device 50 that informs the user that the proper toilet pressure loss learning control is not performed by blinking an LED display or the like to the user.

――― Installation of water storage tank 4 ―――
Next, attachment of the water storage tank 4 will be described.

  FIG. 2A is a schematic view showing a state in which the water storage tank 4 is attached to the flush toilet 2A. FIG. 2B is a schematic view showing a state in which the water storage tank 4 is attached to the flush toilet 2B. FIG. 2C is a schematic view showing a state in which the water storage tank 4 is attached to the flush toilet 2C.

  As shown in FIGS. 2 (A) to 2 (C), flush toilets 2A to 2C are different from each other, and are different in, for example, the appearance and the shape and size of the interior, pressure loss, and the like. However, since the structure of flush toilet 2A-2C is the same as that of flush toilet 2 mentioned above, it demonstrates with the same code | symbol with respect to the same component. Of course, a new configuration may be added depending on the type of flush toilet 2, or an existing configuration may be omitted.

  In the first embodiment, the water storage tank 4 can be attached to a plurality of types of flush toilets 2 such as flush toilets 2A to 2C. In order to make this mountable, the water storage tank 4 has, for example, a shape that matches the shape of the flush toilet 2 of a plurality of types, a common mounting bracket, or the drainage port 18 of the water storage tank 4. The position / size is adapted to the position / size of the water conduit 8 of the flush toilet 2.

――― Functional configuration of water storage tank 4 ―――
Next, the functional configuration of the water storage tank 4 will be described.

  FIG. 3 is a block diagram schematically showing a functional configuration of the water storage tank 4.

  As shown in FIG. 3, the water storage tank 4 includes a storage unit 60, a supply unit 62, an acquisition unit 64, a determination unit 66, and a setting unit 68 in addition to the tank body 4 </ b> A.

  The storage unit 60 includes a storage device such as a memory. The storage means 60 stores pressure loss calculation data 70, a discrimination reference table 72, and a supply condition reference table 74. Further, supply condition setting data 76 is stored in the storage means 60 by the setting means 68.

The pressure loss calculation data 70 includes, for example, a first relational expression R1 as shown in FIG. 4 and a second relational expression R2 as shown in FIG.
The first relational expression R1 is a water storage tank from the water level rise time T1 of the water storage tank 4 and the water supply port 32 of the water supply apparatus 20 that are experimentally determined in any of the water toilets of the plurality of types of water toilets 2. 4 is a relational expression with the first water supply flow rate Q1 supplied to the water 4. The relationship between the water level rise time T1 and the first feed water flow rate Q1 is, for example, an inversely proportional relationship. FIG. 4 is a graph showing the relationship between the water level rise time T1 and the first feed water flow rate Q1 based on the first relational expression R1, with the horizontal axis as the water level rise time and the vertical axis as the flow rate.
The second relational expression R2 is a relational expression between a first water supply flow rate Q1 of the water supply apparatus 20 and a water level rise time T2 of the water storage tank 4 that are experimentally determined in advance in a reference toilet using the water storage tank 4. The relationship between the water level rise time T2 and the first feed water flow rate Q1 is, for example, an inversely proportional relationship. FIG. 5 is a graph showing the relationship between the water level rise time T1 and the first feed water flow rate Q1, based on the second relational expression R2, with the horizontal axis representing the flow rate and the vertical axis representing the water level rise time.

  The discrimination reference table 72 is a table for the discrimination means 66 to refer to.

  FIG. 6 is a diagram illustrating an example of the discrimination reference table 72.

  As shown in FIG. 6, the discrimination reference table 72 describes feature information associated with each type of flush toilet. For example, in the discrimination reference table 72, a serial number description column 72A, a pressure loss (arbitrary unit) description column 72B, a parameter description column 72C, a shape description column 72D, and a siphon type description column 72E are sequentially displayed from the left in the figure. In addition, a description column 72F of the size of the sealing surface is provided.

  In the serial number description column 72A, serial numbers for each type of flush toilet 2 to which the water storage tank 4 including the flush toilets 2A to 2C can be attached are described. In the description column 72A, a model number or an identification number indicating the type of the flush toilet 2 may be described instead of the serial number.

  In the pressure loss description column 72B, the range of pressure loss generated in the flush toilet 2 of the type indicated by the corresponding serial number is described.

  The parameter description column 72C describes the parameters of the flush toilet 2 of the type indicated by the corresponding serial number or the range thereof. Examples of this parameter include a water level lowering time after washing, a water storage tank drainage flow rate, and the like.

  In the shape description column 72D, the shape of the flush toilet 2 of the type indicated by the corresponding serial number is described.

  The siphon type description column 72E describes whether the flush toilet 2 of the type indicated by the corresponding serial number is siphon type (Yes) or not (No).

  In the description column 72F of the size of the stored water surface, the size of the stored water surface (for example, the upper surface) stored in the bowl portion 6 when not drained is described. The unit of the size is not particularly limited, and the unit of the description column 72G in the figure is an arbitrary unit.

  Returning to FIG. 3, the supply condition reference table 74 is a table for the setting means 68 to refer to.

  FIG. 7 is a diagram illustrating an example of the supply condition reference table 74.

  As shown in FIG. 7, the supply condition reference table 74 is not particularly limited. For example, in order from the left in the figure, a serial number description column 74A, a toilet flush water amount (arbitrary unit) description column 74B, a refill water amount (arbitrary unit) ) Description column 74C, a total cleaning water amount description column 74D, a third relational expression description column 74E, and the like.

  In the serial number description column 74A, a serial number common to the serial number in the description column 72A is described.

  The toilet flush water amount description column 74B describes the toilet flush water amount in the flush toilet 2 of the type indicated by the corresponding serial number. The “toilet bowl washing water amount” is the amount of water used for washing the flush toilet 2.

  In the refill water amount description column 74C, the refill water amount in the flush toilet 2 of the type indicated by the corresponding serial number is described. The “refill water amount” is the amount of water necessary to restore the toilet water in the toilet after washing the toilet.

  In the total washing water amount description column 74D, the total washing water amount in the flush toilet 2 of the type indicated by the corresponding serial number is described. The “total cleaning water amount” is the amount of water required when the toilet device 1 is used once, and is the total water amount of the toilet flushing water amount and the refill water amount.

  The description column 74E of the third relational expression describes a third relational expression between the pressure loss coefficient K and the valve opening time T4 of the drainage device 22 that are experimentally determined in advance in the flush toilet 2 as a reference. The relationship between the pressure loss coefficient K and the valve opening time T4 is the same regardless of the type of the flush toilet 2, for example, a proportional relationship.

  Returning to FIG. 3, the supply means 62 includes, for example, the drainage device 22. Based on the supply condition setting data 76 set by the setting means 68, the supply means 62 converts the water in the tank body 4A to the flush toilet in which the tank body 4A is attached among the plurality of types of flush toilets 2. Supply.

  The acquisition unit 64 includes, for example, the control device 26. The acquisition unit 64 acquires information related to the flush toilet in which the tank body 4A is attached among the multiple types of flush toilets 2.

  The discriminating means 66 includes, for example, the control device 26. Based on the information acquired by the acquisition unit 64, the determination unit 66 determines the type of flush toilet in which the tank body 4A is attached. For example, the discriminating means 66 discriminates the type of flush toilet by referring to the characteristic information (discrimination reference table 72) of the flush toilet associated with each type of flush toilet stored in advance.

  The setting unit 68 includes, for example, the control device 26. The setting unit 68 sets the supply condition of the supply unit 62 to be suitable for the type based on the type of flush toilet determined by the determination unit 66. For example, the setting unit 68 refers to the supply condition of the flush toilet associated with each type of flush toilet 2 stored in advance, and the flush corresponding to the type of flush toilet determined by the determination unit 66 The toilet supply condition is extracted, and the extracted supply condition is set.

――― Processing of each functional configuration ―――
Next, processing of each functional configuration will be specifically described.

  FIG. 8 is a flowchart showing the flow of each process of the acquisition unit 64, the determination unit 66, and the setting unit 68 in the process of each functional configuration.

(Step SP10)
The acquisition means 64 determines whether or not the construction of the flush toilet has been completed. If the acquisition unit 64 makes an affirmative determination (Yes), it proceeds to the process of step SP12, and if it makes a negative determination (No), it returns to the process of step SP10.
In the first embodiment, the “construction” refers to, for example, the flush toilet 2A shown in FIG. 2 (A), which can be attached to a plurality of types of flush toilets 2 by removing an old water storage tank that has already been attached. This is a replacement of the water storage tank to which a new water storage tank 4 is attached. However, the installation construction which newly attaches the water storage tank 4 to the flush toilet 2A to which the water storage tank is not attached may be used. The following processing is the same even when the water tank 4 is replaced or attached to the flush toilets 2B and 2C.
Whether or not the construction is completed is determined by a detection switch (not shown) protruding from the water storage tank 4 when the operator manually presses an arbitrary push button (not shown) or when the water storage tank 4 is attached. ) Is determined by, for example, automatic pressing by contact with the flush toilet 2A.

(Step SP12)
The acquisition means 64 acquires, for example, the pressure loss of the flush toilet 2A as information related to the flush toilet 2A to which the water storage tank 4 is attached.

  FIG. 9 is a flowchart of a subroutine related to pressure loss acquisition in step SP12 shown in FIG. FIG. 10 is a time chart showing the operation of the acquisition unit 64.

(Step SP12A)
The acquisition unit 64 performs a cleaning test. In this cleaning test, even when a cleaning mode switching button (not shown) of the large cleaning mode, the small cleaning mode, or the eco small cleaning mode of the operation button 46 is pressed at time t1 in FIG. Turn on. At time t1 in FIG. 10, the water supply valve 30 is opened to supply water to the tank body 4A. After the float switch 24 is turned on, the water supply valve 30 is closed for a predetermined time to stop water supply. Thereafter, the water supply valve 30 is opened again at time t2 in FIG.
Thereafter, similarly, water supply is also performed between step SP12B and step SP12C (predetermined time immediately before time t6 in FIG. 10) and between step SP12C and step SP12D (predetermined time immediately before time t10 in FIG. 10). The valve 30 is closed for a predetermined time to stop water supply.
That is, before each of the steps SP12A, SP12B, SP12C and SP12D is executed and a predetermined measurement is performed by the time measuring device 48, the water supply valve 30 is closed for a predetermined time and the water supply device 20 is stopped. By actuating and starting the supply of the washing water into the tank body 4A, the behavior of the constant flow valve 34 on the upstream side of the water supply device 20 is stabilized until the time t13 in FIG.

(Step SP12B)
The acquisition unit 64 calculates a first water supply flow rate Q1 supplied from the water supply port 32 of the water supply device 20 to the tank body 4A.

  A method for calculating the first water supply flow rate Q1 will be described with reference to FIGS.

  The water supply valve 30 opens for a predetermined time with the drainage device 22 closing the drain outlet 18 at time t1 in FIG. 10, and water is supplied into the tank body 4A from the water inlet 32 for a predetermined time. Prior to t2, the water level in the tank body 4A rises to a water level (stop water level WL) in contact with the float switch 24. When the float switch 24 is turned on and then the water supply valve 30 is closed for a predetermined time, the drainage device 22 is driven to open the drainage port 18 at time t2 in FIG. 10, and the water level in the tank body 4A is lowered. The float switch 24 is turned off at time t3 in FIG.

  Even in the state where water supply by the water supply device 20 is continued, the speed at which the water level in the tank body 4A descends greatly exceeds the speed at which the water level rises by water supply, so the water level in the tank body 4A is empty ( DWL2 = 0) (see DWL2 in FIG. 1). Thereafter, at time t4 in FIG. 10, the drainage device 22 closes the drainage port 18 again in a state where the water level in the tank body 4A is empty (DWL2 = 0).

At this time, at time t4 in FIG. 10, the drainage device 22 closes the drainage port 18 and at the same time, the timing device 48 of the control device 26 determines that the water level in the tank body 4A The water level rise time T1 (= t5-t4) is measured until time t5 when the water level WL rises (see T1 in FIGS. 1 and 10). At time t5 in FIG. 10, the float switch 24 is turned on from off.
In the first embodiment, the water level rise time T1 (= t5-t4) is measured from time t4 to time t5 when the water level rises from time t4 to the initial water level before starting cleaning (water stop water level WL). However, instead of the initial water level, the water level rise time up to a predetermined water level lower than the initial water level or a time when the water level rises to a predetermined water level higher than the initial water level may be measured.

And the acquisition means 64 reads the 1st relational expression R1 of the water level rise time T1 of the water storage tank and the 1st water supply flow volume Q1 of the water supply apparatus which were experimentally determined beforehand in the pressure loss calculation data 70. Here, as shown in FIG. 4, if the water level rise time T1 measured by the timing device 48 from time t4 to time t5 in FIG. 10 is a [s], this water level rise time T1 (= a [s] ] Is applied to the first relational expression R1, the first feed water flow rate Q1 (= b [L / min]) is calculated, and the calculated data is temporarily stored.
The first water supply flow rate Q1 calculated by applying the water level rise time T1 measured by the time measuring device 48 to the first relational expression R1 is also calculated from the measured water level rise time T1 and the capacity of the tank body 4A. be able to.

(Step SP12C)
The acquisition means 64 calculates the pressure loss of the flush toilet 2A.

  A method for confirming the pressure loss of the flush toilet 2A will be specifically described with reference to FIGS. 1, 5, and 10.

  As advance preparation, the acquisition means 64 reads out the relational expression R2 between the first water supply flow rate Q1 of the water supply apparatus 20 and the water level rise time T2 of the tank main body 4A, which are experimentally determined in the pressure loss calculation data 70 in advance. Then, as shown in FIG. 5, when the water storage tank 4 is applied to the reference toilet, the acquisition unit 64 uses the relation R2 to calculate the first water supply flow rate Q1 (= b [ L / min]). Thus, after the drainage device 22 is driven for a predetermined time to discharge the washing water, the drainage device 22 is in a closed state until the water level rises from the dead water level DWL1 in the tank body 4A to the initial water level WL before the start of washing. The water level rise time T2 (= c [s]) is calculated in advance.

In step SP12C after time t5 in FIG. 10, the water supply valve 30 is closed for a predetermined time immediately before time t6, the water supply valve 30 is opened again at time t6, and the drainage device 22 is driven again to discharge the drainage port. 18 is opened with a temporary valve opening time. Then, the water level in the tank body 4A is lowered, and the float switch 24 is turned off at time t7 in FIG. When the drainage device 22 closes the drain outlet 18 at time t8 in FIG. 10, the dead water level DWL1 in the water storage tank 4 is determined, and the cleaning corresponding to the difference between the still water level WL and the dead water level DWL1 in the tank body 4A. The amount of water, that is, the amount of washing water drained from the tank body 4A to the water conduit 8 of the flush toilet 2 is calculated. At the same time, the time measuring device 48 of the control device 26 as a part of the acquisition unit 64 increases the water level in the tank body 4A from the dead water level DWL1 at time t8 to the initial water level before the start of cleaning (stop water level WL). Until the water level rise time T3 (= t9-t8) is measured (see T3 in FIG. 1).
In the first embodiment, the water level rise time T3 (= t9−t8) is measured from time t8 to time t9 when the water level rises from time t8 to the initial water level before the start of cleaning (water stop water level WL). However, instead of the initial water level, the water level rise time up to a predetermined water level lower than the initial water level or a time when the water level rises to a predetermined water level higher than the initial water level may be measured.

  Next, the acquisition means 64 uses the ratio (T3 / T2) between the water level rise time T3 of the flush toilet 2A measured by the timing device 48 and the water level rise time T2 of the reference toilet calculated in FIG. Then, step S12C in FIG. 9 ends.

Here, when the capacity of the tank main body 4A and the first feed water flow rate Q1 of the flush toilet 2A and the reference toilet are common to each other, the pressure loss coefficient K is greater than “1”. Since the flush level 2 of the flush toilet 2A is larger than the flush level T2 of the reference toilet, the flush toilet 2A has a lower dead water level DWL1 than the reference toilet, and the tank main body 4A changes to the flush toilet 2A. It can be confirmed that the amount of flushed water is increased and the pressure loss of the flush toilet 2A is smaller than the pressure loss of the reference toilet.
On the other hand, when the pressure loss coefficient K is "1", it can be confirmed that the pressure loss of the flush toilet 2A and the reference toilet is equal to each other, and when the pressure loss coefficient K is smaller than "1" It can be confirmed that the pressure loss of the toilet 2A is larger than the pressure loss of the reference toilet.

(Step SP12D)
The acquisition unit 64 closes the water supply valve 30 for a predetermined time immediately before time t10, and opens the water supply valve 30 again at time t10. And the 2nd water supply flow volume Q2 supplied to the tank main body 4A from the water supply port 32 of the water supply apparatus 20 is again calculated by the same process as step S12B mentioned above. Specifically, the drainage device 22 is driven at time t10 in FIG. 10 to open the drainage port 18, the water level in the water storage tank 4 is lowered, and the float switch 24 is turned off at time t11 in FIG.

  Moreover, although the water supply by the water supply apparatus 20 is in a continuous state, the speed at which the water level in the tank main body 4A descends greatly exceeds the speed at which the water level rises by water supply, so the water level in the tank main body 4A is empty (DWL2 = 0) (see DWL2 in FIG. 1). Thereafter, at time t12 in FIG. 10, the drainage device 22 closes the drainage port 18 again in a state where the water level in the tank body 4A is empty (DWL2 = 0), and at the same time, the control device 26 as a part of the acquisition unit 64 The timing device 48 measures the water level rise time T5 (= t13−t12) from time t12 to time t13 when the water level rises from time t12 to the initial water level before the start of washing (water stop water level WL) (FIG. 1 and T5 in FIG. 10). At time t13 in FIG. 10, the float switch 24 is turned on from off, the water supply valve 30 is closed, and water supply by the water supply device 20 is stopped.

  Then, the water level rise time T5 measured by the time measuring device 48 from time t12 to time t13 in FIG. 10 is applied to the first relational expression R1 shown in FIG. 4, whereby the second feed water flow rate Q2 is calculated.

(Step SP12E)
The acquisition unit 64 compares the second water supply flow rate Q2 with the first water supply flow rate Q1 calculated and stored in step S12B of FIG. 9, and determines whether or not the difference between the two is within a predetermined range. Then, the acquisition unit 64 proceeds to the process of step SP12F when an affirmative determination is made, and returns to the process of step SP12A when a negative determination is made.

(Step SP12F)
The acquisition unit 64 determines the pressure loss coefficient K calculated in step SP12C, acquires this, and passes it to the determination unit 66.

(Step SP14)
The discriminating means 66 discriminates the type of the flush toilet 2A based on the information related to the flush toilet 2A passed from the acquisition means 64. The information used for determination is one of the pressure loss coefficients K when not passing through step SP18 described later, and two or more types including information of the pressure loss coefficient K when passing through step SP18 described later. It becomes.

  Specifically, the determination unit 66 refers to the determination reference table 72 and compares the information related to the flush toilet 2A passed from the acquisition unit 64 with the column in the determination reference table 72 corresponding to this information. Thus, the type of the flush toilet 2A is determined by specifying the serial number in the column that matches the information related to the flush toilet 2A passed from the acquisition means 64.

  However, there may be a case where the determination cannot be made only by the information related to the flush toilet 2A passed from the acquisition means 64. For example, in the serial number “4” in FIG. 6, the pressure loss coefficient K is between “0.9” and “1.1” and does not overlap with the pressure loss coefficient K of other serial numbers. “4” can be specified, but the pressure loss coefficient K overlaps with the pressure loss coefficient K of other serial numbers in serial numbers other than “4”. Therefore, a serial number other than “4” is specified only by the pressure loss coefficient K. Can not do it.

(Step SP16)
Therefore, the determination unit 66 proceeds to the process of step SP18 when it cannot be determined, and shifts to the process of step SP20 when it cannot be determined.

(Step SP18)
The acquisition unit 64 automatically acquires information related to the flush toilet 2A other than the pressure loss coefficient K, such as the parameters shown in FIG. Since the acquisition of this parameter is performed by a known method such as using a time measuring device 48 or a sensor, the description thereof is omitted.

(Step SP20)
Based on the type of flush toilet 2A determined by the determining unit 66, the setting unit 68 sets the supply condition of the supplying unit 62 to be suitable for the type.

  Specifically, the setting unit 68 refers to the supply condition reference table 74 and acquires the supply condition corresponding to the type of the flush toilet 2A determined by the determination unit 66, that is, the serial number of the flush toilet 2A. Then, the setting unit 68 sets, for example, the toilet flushing water amount, the refill water amount, the total flushing water amount, and the like as the supply condition setting data 76 that is referred to when the supply unit 62 supplies the same. The setting unit 68 sets, for example, the third relational expression among the acquired supply conditions, a value calculated based on the condition as supply condition setting data 76.

  For example, for the third relational expression, the setting unit 68 calculates the valve opening time T4 of the drainage device 22 by substituting the pressure loss coefficient K acquired in step SP12 into the third relational expression. The third relational expression is, for example, a proportional expression R3 shown in FIG. 11 (hereinafter referred to as “third relational expression R3”). In FIG. 11, if the calculated pressure loss coefficient K is a constant d, it is substituted into the third relational expression R3, and the valve opening time T4 of the drainage device 22 is calculated as e [s]. Data is set as supply condition setting data 76.

(Step SP22)
The setting means 68 opens the valve opening time T4 when the calculated valve opening time T4 falls below a predetermined minimum valve opening time T4min or exceeds a predetermined maximum valve opening time T4max as shown in FIG. It is determined that the valve time T4 is an abnormal value, the alarm device 50 as the notification means is controlled to notify the installer that the appropriate setting has not been performed, and the setting means 68 is connected to the flush toilet 2A. Set the water supply flow rate at the default value that can ensure the cleaning ability considering the pressure loss. Then, again from step SP12 in FIG. 8, the valve opening time T4 of the drainage device 22 is determined in the subsequent step S20 in FIG.
On the other hand, when the valve opening time T4 is within the range between the minimum valve opening time T4min and the maximum valve opening time T4max, the setting is completed, and thereafter the essential toilet cleaning operation is possible. Since the flush toilet 2A and the water storage tank 4 are substantially usable, the setting means 68 determines that the value is a normal value and controls the alarm 50 to indicate that the setting has been completed. To inform.

---effect---
As described above, in the water storage tank 4 according to the first embodiment, since the tank body 4A can be freely attached to a plurality of types of flush toilets 2, a common storage tank is used for a plurality of types of flush toilets 2. Therefore, when only the water storage tank 4 is replaced, the type of the existing flush toilet 2A can be used without confirming the manufacturing number of the existing flush toilet 2A to be used by the installer as it is. Since it is possible to order a common water storage tank 4 suitable for the above, the time and labor required for installing the water storage tank 4 can be reduced.
Further, in the water storage tank 4 according to the first embodiment, the tank body 4A is based on the acquisition means 64 for acquiring information related to the flush toilet attached with the tank body 4A and the information acquired by the acquisition means 64. Since the discriminating means 66 for discriminating the type of the attached flush toilet 2A is provided, even when the construction person does not know the type by looking at the flush toilet 2A when setting the supply conditions, it is automatically performed. The type of flush toilet 2A is determined. In the water storage tank 4, the setting means 68 sets the supply condition of the supply means based on the type of the flush toilet 2 </ b> A determined by the determination means 66. The time required for preparation of the water storage tank 4 can be shortened by saving the labor of the installer. Moreover, since the setting unit 68 performs the setting without manually setting, it is possible to suppress erroneous setting of the water supply condition.
Therefore, according to the water storage tank 4 according to the first embodiment, it is possible to reduce the time required for installation of the water storage tank 4 and to suppress erroneous setting of the water supply conditions.

  Moreover, since the acquisition means 64 acquires the pressure loss (pressure loss coefficient K) of the flush toilet 2A based on the water level rise time that is the measurement time related to the change in the water level in the tank body 4A, the determination means 66 Based on the pressure loss calculated by the acquisition means 64, the type of the flush toilet 2A can be determined. Here, since the pressure loss is likely to vary depending on the type of flush toilet, when the determination means 66 determines the type of flush toilet 2A based on the pressure loss, it is determined based on other information related to the flush toilet 2A. Compared to the above, the flush toilet 2A can be more accurately identified.

  In addition, in the water storage tank 4 according to the first embodiment, the acquisition unit 64 passes through steps SP16 and SP18 shown in FIG. 8 as information related to the flush toilet 2A to which the water storage tank 4 is attached. Since more than one type of information is acquired, the discriminating means 66 can discriminate the flush toilet 2A that cannot be distinguished from only one type of information.

Second Embodiment
Next, a water storage tank according to a second embodiment of the present invention will be described.

  In the first embodiment, a case has been described in which the acquisition unit 64 automatically acquires all information related to the flush toilet 2A to which the water storage tank 4 is attached. However, in the second embodiment, all or part of the information is manually input. The case where it acquires by doing is demonstrated.

  The configuration of the water storage tank according to the second embodiment is the same as the configuration of the water storage tank 4. However, the acquisition means 64 includes an input means for manually inputting a part of information related to the flush toilet 2A.

The input means may be provided in the tank main body 4A, or may be provided at a location away from the tank main body 4A. In the second embodiment, the input means is also used as a remote control switch that is an input means of a remote control device (not shown) that remotely controls the flush toilet 2A and the water storage tank 4, for example.
The information related to the flush toilet 2A input by the input means is not particularly limited, but is preferably information that can be visually confirmed by a contractor (person). As shown in FIG. 6, the visually identifiable information includes the shape of the flush toilet 2, the presence / absence of a siphon type, the size of the water storage surface, and the like.

  The processing of the water storage tank according to the second embodiment is the same as the processing of the water storage tank 4 according to the first embodiment shown in FIG. 8, but only the processing of step SP18 is different.

  In step SP18, the acquisition unit 64 displays on the display screen of the remote control device that the installer is prompted to input. And if there exists an input, the acquisition means 64 will acquire it as other information (input information) of the information which concerns on the flush toilet 2A to which the water storage tank 4 was attached.

  In step SP14 following step SP18, the determination unit 66 determines the type of the flush toilet 2A to which the water storage tank 4 is attached based on the pressure loss coefficient K acquired by the acquisition unit 64 and the input information.

  As described above, according to the water storage tank according to the second embodiment, even when the product number of the flush toilet 2A disappears from the flush toilet 2A and cannot be confirmed, the appearance and interior view of the flush toilet, the size of the reservoir, the water Information on the flush toilet 2A, such as how to supply, can be known by the contractor if he / she goes to the site. The type of the toilet 2 </ b> A is determined, and the supply condition is set by the setting means 68. Thereby, the acquisition means 64 can be comprised, without providing newly the sensor etc. which acquire the information which concerns on the flush toilet 2A automatically. Further, even if there is a sensor or the like, if there is an input means in addition to this, the determination means 66 can determine based on a plurality of pieces of information, so that it is possible to more accurately determine the flush toilet 2A. .

<Third Embodiment>
Next, a water storage tank according to a third embodiment of the present invention will be described.

  Although 1st Embodiment demonstrated the case where the acquisition means 64 acquires the pressure loss coefficient K etc. as information which concerns on the flush toilet 2A to which the water storage tank 4 was attached, flush toilet 2A as information which concerns on the flush toilet 2A The case where the identification information which shows the kind itself of is acquired is demonstrated.

  The configuration of the water storage tank according to the third embodiment is the same as the configuration of the water storage tank 4. However, a plurality of types of flush toilets 2 to which the water storage tank 4 can be attached are each provided with a tag in which identification information is embedded. The place to which the tag is applied is not particularly limited, but is preferably the upper surface or the rear surface of the flush toilet 2A to which the water storage tank 4 is attached from the viewpoint of ease of reading.

  In the processing of the water storage tank according to the third embodiment, steps SP12, SP16, and SP18 are omitted in the processing of the water storage tank 4 according to the first embodiment shown in FIG. Further, instead of step SP12, the acquisition means 64 includes a reader capable of reading the tag, and is attached when the tank body 4A is attached to any of the plurality of types of flush toilets 2. The identification information (ID) as information relating to the flush toilet is obtained by reading the tag of the flush toilet.

  In step SP14, the determination unit 66 refers to an identification information reference table 80 in which serial numbers and IDs are associated with each other as shown in FIG. 12, instead of the determination reference table 72 shown in FIG. By specifying, the type of flush toilet is determined.

  As described above, according to the water storage tank according to the third embodiment, since the acquiring unit 64 acquires the ID of the flush toilet, it can be determined by referring to the identification information reference table 80 only once. Easier and more accurate. If the ID itself indicates the type of flush toilet, the determination can be made only by receiving the ID by the determination means 66 without referring to the identification information reference table 80.

<Fourth embodiment>
Next, a water storage tank according to a fourth embodiment of the present invention will be described.

  In the first embodiment, the setting means 68 uses the time when the set valve opening time T4 of the drainage device 22 is appropriate, and when it is not appropriate, the processing shown in FIG. 8 is performed to calculate the pressure loss again. In the fourth embodiment, a case where the set valve opening time T4 of the drainage device 22 is corrected will be described.

  The configuration of the water storage tank according to the fourth embodiment is the same as the configuration of the water storage tank 4. In addition, in the process of each functional configuration of the water storage tank according to the fourth embodiment, the flow of each process of the acquisition unit 64, the determination unit 66, and the setting unit 68 is also the process shown in FIGS. Same as flow.

  However, since the constant flow valve 34 used for the water storage tank 4 is used for the first time in step SP12 where water is supplied after construction, there is a possibility that the constant flow valve 34 is not familiar with the water supply pipe 28. Yes, on the premise that the flow rate characteristics in step SP12B, step SP12C, and step SP12D in FIGS. 9 and 10 described above change, the valve opening time T4 set in step SP20 in FIG. 8 is corrected according to this change. Execute control to

  FIG. 13 is a diagram illustrating the relationship between the water supply time and the water supply flow rate. In FIG. 13, an average water supply flow rate obtained by dividing the total water supply flow rate at the detection times T1, T3, and T5 of step SP12B, step SP12C, and step SP12D by the detection times T1, T3, and T5 is shown as the water supply flow rate.

  As shown in FIG. 13, if the constant flow valve 34 at the initial stage of construction is not familiar, it will become familiar by using, for example, step SP12B, step SP12C, and step SP12D, and it is a predetermined water supply period as it becomes familiar. Variations in the feed water flow rate during each of the detection times T1, T3, T5 are suppressed, and as a result, the average feed water flow rate decreases. In other words, the first feed water flow rate Q1 at step SP12B, which is the basis for calculating the pressure loss, may be different from the third feed water flow rate Q3 at step SP12C at the time of subsequent pressure loss calculation. In such a case, the set valve opening time T4 of the drainage device 22 may be inappropriate.

  Therefore, in the fourth embodiment, the correction of the valve opening time T4 of the drainage device 22 is performed by performing a plurality of processes in step SP20 shown in FIG.

  FIG. 14 is a flowchart of a subroutine relating to the supply condition setting in step SP20 shown in FIG. 8, and a plurality of processes performed in FIG. 14 will be described below.

(Step SP20A)
Based on the type of flush toilet 2A determined by the determining unit 66, the setting unit 68 sets the supply condition of the supplying unit 62 to be suitable for the type.

  Specifically, the setting unit 68 refers to the supply condition reference table 74 and acquires the supply condition corresponding to the type of the flush toilet 2A determined by the determination unit 66, that is, the serial number of the flush toilet 2A. Then, the setting unit 68 sets, for example, the toilet flushing water amount, the refill water amount, the total flushing water amount, and the like as the supply condition setting data 76 that is referred to when the supply unit 62 supplies the same. The setting unit 68 sets, for example, the third relational expression among the acquired supply conditions, a value calculated based on the condition as supply condition setting data 76.

  For example, for the third relational expression, the setting unit 68 calculates the valve opening time T4 of the drainage device 22 by substituting the pressure loss coefficient K acquired in step SP12 into the third relational expression. The third relational expression is, for example, a proportional expression R3 shown in FIG. 11 (hereinafter referred to as “third relational expression R3”). In FIG. 11, if the calculated pressure loss coefficient K is a constant d, it is substituted into the third relational expression R3, and the valve opening time T4 of the drainage device 22 is calculated as e [s]. Data is set as supply condition setting data 76.

(Step SP20B)
The acquisition unit 64 uses the first feed water flow rate Q1 and the second feed water flow rate Q2 to the tank body 4A from the feed port 32 of the water feed device 20 in step SP12C under the situation where the valve opening time T4 is set. A third water supply flow rate Q3 to be supplied is estimated. For this estimation, for example, an intermediate value (average value) between the first feed water flow rate Q1 and the second feed water flow rate Q2 can be used, and an approximate expression for the change in flow rate characteristic shown in FIG. It is also possible to calculate by applying it to a mathematical formula.

(Step SP20C)
The setting means 68 calculates the difference between the third feed water flow rate Q3 and the feed water flow rate Q1 as the feed water flow rate fluctuation amount D1.

(Step SP20D)
The setting means 68 corrects the valve opening time T4 of the drainage device 22. The correction method is not particularly limited as long as the valve opening time T4 becomes a more appropriate value. As an example, α is added to the set T4 (T4 = T4 + α). This α is represented by a relational expression such as α = −c × D1 + d. In the relational expression of this example, c and d are constants set in advance for the flush toilet 2A used, and are stored in the supply condition reference table 74 shown in FIG. The setting unit 68 reads the constant corresponding to the flush toilet 2A determined to be used from the supply condition reference table 74 and uses it.

  As described above, according to the water storage tank of the fourth embodiment, the target (appropriate) valve opening time T4 and the cleaning are performed even when the water supply flow fluctuates a plurality of times for the pressure loss determination. The amount of water can be set.

  Further, by correcting the valve opening time T4, the probability of re-execution (re-execution of pressure loss learning) from step SP12 of FIG. 8 in step SP22 can be reduced. Therefore, in the fourth embodiment, the process can be simplified by deleting the process of step SP22.

<Modification>
As mentioned above, although embodiment of the technique which this application discloses was described, the technique which this application discloses is not limited above.

  For example, in the description of FIG. 9 of the first embodiment, the case where the pressure loss coefficient K is calculated based on the water level rise time has been described, but if based on the measurement time related to the change in the water level in the tank body 4A, Without being limited, for example, the water level in the tank body 4A may be calculated based on the water level lowering time until the water level drops from the initial water level before the start of cleaning to a predetermined water level.

  In the description of FIG. 9 of the first embodiment, when the flow rate of water supplied to the tank body 4A by the water supply device 20 does not vary and a stable flow rate is guaranteed at all times, step SP12B You may abbreviate | omit each of the process of confirming 1 feed water flow Q1, and the process of confirming 2nd feed water flow Q2 of step SP12D.

  In addition, the description has been given of the case where the notification means is the notification device 50 that informs by blinking an LED display or the like, but the notification is performed by changing the color without blinking, or by the sound, smell vibration, mail, or the like. Or you may.

  In addition, the notifying unit may notify the contractor by displaying the contents of the supply condition set by the setting unit 68 on the display unit of the remote control device or transmitting it by e-mail in step SP22. Similarly, the notification means may notify the contractor in step SP14 by displaying the type of flush toilet determined by the determination means 66 on, for example, the display means of the remote control device or by sending it by e-mail.

  Further, the discrimination reference table 72 and the supply condition reference table 74 may be a table together. The contents in the discrimination reference table 72 and the supply condition reference table 74 may not be described in a table format.

  In the fourth embodiment, the correction of the valve opening time T4 has been described on the assumption that the water storage tank 4 includes the constant flow valve 34. However, the valve of the water storage tank 4 is not limited to the constant flow valve 34.

  The elements included in each of the embodiments described above can be combined as much as technically possible, and combinations thereof are also included in the scope of the present invention as long as they include the features of the present invention.

2, 2A, 2B, 2C ... flush toilet 4 ... water storage tank 4A ... tank body 34 ... constant flow valve (valve)
62 ... supply means 64 ... acquisition means 66 ... discrimination means 68 ... setting means

Claims (8)

A tank body that stores water and can be freely attached to multiple types of flush toilets;
Supply means for supplying water of the tank body to the flush toilet equipped with the tank body among the plurality of types of flush toilets based on set supply conditions;
Obtaining means for obtaining information on the flush toilet with the tank body attached thereto;
Discriminating means for discriminating the type of flush toilet based on the information acquired by the acquiring means;
Setting means for setting the supply condition of the supply means to be suitable for the type based on the type of the flush toilet determined by the determination unit;
A water storage tank equipped with. The acquisition means acquires a pressure loss of the flush toilet based on a measurement time relating to a change in the water level in the tank body.
The water storage tank according to claim 1. A valve body for adjusting the amount of water supplied when supplying water to the tank body;
The setting means, after setting the supply condition, calculates a fluctuation amount of the feed water flow rate due to use of the valve body, and sets the supply condition.
The water storage tank according to claim 2. The supply condition includes a supply time of the supply means,
The acquisition means acquires one feed water flow rate based on the measurement time, and further acquires the other feed water flow rate due to use of the valve body after setting the supply time,
The setting means calculates a difference between the other water supply flow rate and the one water supply flow rate, calculates the fluctuation amount, and sets the supply time calculated based on the fluctuation amount.
The water storage tank according to claim 3. The acquisition means acquires two or more types of information as the information related to the flush toilet.
The water storage tank according to any one of claims 1 to 4. The acquisition means includes an input means for manually inputting a part of the information related to the flush toilet.
The water storage tank according to any one of claims 1 to 5. Each of the plurality of types of flush toilets has a tag embedded with identification information,
The acquisition means acquires the identification information as the information related to the flush toilet by reading the tag when the tank body is attached to the flush toilet.
The water storage tank according to claim 1. The discriminating means and the setting means refer to reference information for each type of flush toilet stored in advance during each processing,
The water storage tank according to any one of claims 1 to 7.

Images