Washing device

Abstract

To improve the convenience of a user by informing the user of the occurrence of clogging in a supply passage of a treatment agent.SOLUTION: A substantial supply amount of a treatment agent substantially supplied to a cleaning tank 7 is calculated from a flow rate of the treatment agent detected by flow rate detection means 52 when a supply pump 54 is driven under an initial driving condition, and a preset supply amount is compared with the calculated substantial supply amount of the treatment agent. When the supply amount difference between the preset supply amount and the substantial supply amount is equal to or greater than a predetermined supply amount, it is determined that clogging has occurred in a supply path 51, and notification information corresponding to the occurrence of clogging is notified from notification units 79B, 80.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a cleaning device. In particular, the present invention relates to a cleaning device that notifies clogging of a supply path that supplies a treatment agent from a storage tank to a cleaning tank.

Background Art

[0002] Conventionally, cleaning devices such as dishwashers and washing machines have been proposed that include a cleaning tank for cleaning objects to be cleaned such as tableware and clothing, and a tank for storing a treatment agent such as detergent or rinse, and automatically supply a predetermined amount of the treatment agent from the tank to the cleaning tank (for example, Patent Document 1). In this type of cleaning device, clogging occurs in the supply path connecting the storage tank and the cleaning tank. Therefore, if a user uses the cleaning device without noticing the clogging, the cleaning operation is performed in a state where the supply amount of the treatment agent to the cleaning tank is insufficient, or the cleaning operation is performed in a state where no treatment agent is supplied to the cleaning tank at all. Generally, since the supply path for the treatment agent inside the cleaning device cannot be visually recognized from the outside, the user cannot determine the cause of poor cleaning, which results in a problem of poor usability.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problem to be Solved by the Invention

[0004] The present invention solves the above problem, and an object of the present invention is to improve user convenience by notifying a user that clogging has occurred in the supply path for the treatment agent.

Means for Solving the Problem

[0005] According to a first aspect of the present technology, a cleaning tank that accommodates and cleans an object to be cleaned; A treatment agent supply unit that supplies a liquid treatment agent to the washing tank, A notification unit that broadcasts predetermined information, It comprises a control unit and, The treatment agent supply unit is a cleaning apparatus comprising: a storage tank for storing the treatment agent; a supply channel connecting the storage tank and the cleaning tank; a supply pump interposed in the supply channel for supplying the treatment agent from the storage tank to the cleaning tank; and a flow rate detection means interposed in the supply channel upstream or downstream of the supply pump for detecting the flow rate of the treatment agent circulating through the supply channel. The control unit stores the initial driving conditions for the supply pump, which supplies the treatment agent stored in the storage tank to the washing tank at a predetermined set supply amount, under initial conditions where there is no clogging in the supply path. During the washing operation, the supply pump is driven under initial operating conditions so that the treatment agent stored in the storage tank is supplied to the washing tank at the set supply rate. The actual amount of treatment agent supplied to the washing tank is calculated from the flow rate of the treatment agent detected by the flow rate detection means when the supply pump is driven under initial operating conditions. By comparing the set supply amount with the calculated actual supply amount of the processing agent, if the difference in supply amount between the set supply amount and the actual supply amount is greater than or equal to a predetermined supply amount threshold, it is determined that a blockage has occurred in the supply path. A cleaning device is provided that, upon detecting the occurrence of clogging, issues notification information corresponding to the occurrence of clogging from a notification unit.

[0006] According to the first embodiment described above, if the difference in supply amount between the set supply amount and the actual supply amount exceeds the supply amount threshold, notification information corresponding to the occurrence of clogging is issued. This allows the user to recognize clogging in the supply path that is causing cleaning problems and encourages maintenance. This improves user convenience.

[0007] According to a second aspect of this technology, in the first embodiment described above, When the control unit determines that clogging has occurred, it drives an additional supply pump so that the actual supply amount calculated from the flow rate of the treatment agent detected by the flow rate detection means is approximately equal to the set supply amount.

[0008] According to the second embodiment described above, even if clogging occurs in the supply path and the actual supply amount falls below the set supply amount, the supply pump is additionally driven so that the actual supply amount of treatment agent supplied to the cleaning tank is approximately the set supply amount. This eliminates the shortage of treatment agent and prevents cleaning failures.

[0009] According to a third aspect of this technology, A washing tank for containing and washing the objects to be washed, A treatment agent supply unit that supplies a liquid treatment agent to the washing tank, A notification unit that broadcasts predetermined information, It comprises a control unit and, The treatment agent supply unit is a cleaning apparatus comprising: a storage tank for storing the treatment agent; a supply channel connecting the storage tank and the cleaning tank; a supply pump interposed in the supply channel for supplying the treatment agent from the storage tank to the cleaning tank; and a flow rate detection means interposed in the supply channel upstream or downstream of the supply pump for detecting the flow rate of the treatment agent circulating through the supply channel. The control unit stores the initial driving conditions for the supply pump, which supplies the treatment agent stored in the storage tank to the washing tank at a predetermined set supply amount, under initial conditions where there is no clogging in the supply path. During the washing operation, the supply pump is driven so that the actual amount of treatment agent supplied to the washing tank, calculated from the flow rate of the treatment agent detected by the flow rate detection means, is approximately equal to the set supply amount. The initial driving conditions are compared with the actual driving conditions when the supply pump is driven so that the actual amount of processing agent supplied is approximately the set supply amount. If the difference between the initial driving conditions and the actual driving conditions is greater than or equal to a predetermined threshold, it is determined that clogging has occurred in the supply path. A cleaning device is provided that, upon detecting the occurrence of clogging, issues notification information corresponding to the occurrence of clogging from a notification unit.

[0010] According to the third embodiment described above, if the difference between the initial driving conditions and the actual driving conditions exceeds a condition threshold, notification information corresponding to the occurrence of clogging is provided. This allows the user to recognize clogging in the supply path, which is causing poor cleaning, while simultaneously resolving the shortage of processing agent, thereby encouraging maintenance. This improves user convenience.

[0011] According to a fourth aspect of this technology, in any of the first to third aspects described above, The treatment agent supply unit has a remaining amount detection means for detecting the remaining amount of treatment agent in the storage tank. When the control unit determines that clogging has occurred, it changes the notification information corresponding to the occurrence of clogging according to the remaining amount of processing agent detected by the remaining amount detection means.

[0012] Since blockage of the supply line can occur regardless of the remaining amount of treatment agent in the storage tank, even if a notification of blockage occurs when there is a large amount of treatment agent remaining, the user may not be able to perform maintenance. However, according to the fourth embodiment described above, the notification information corresponding to the occurrence of blockage is changed according to the remaining amount of treatment agent in the storage tank, so that the user can be notified of appropriate information for performing maintenance.

[0013] According to a fifth aspect of this technology, in any of the first to fourth aspects described above, The control unit stores the number of cleaning operations performed before a past clogging occurred, or the clogging history, including the period of time until a past clogging occurred. If it is determined that no clogging has occurred, the remaining number of cleaning cycles or remaining time until the next clogging occurs is calculated based on the clogging history. The notification unit will broadcast estimated information, including the calculated remaining number of operating cycles or remaining operating period.

[0014] The frequency of clogging varies depending on the installation environment of the cleaning device and the usage status of the cleaning device by the user, so it is difficult to specify when the next clogging will occur. However, by using the clogging history including the number of cleaning operations before the previous clogging occurs or the period before the previous clogging occurs, the interval at which clogging occurs can be grasped, so it is possible to set an estimate of the remaining number of cleaning operations or the remaining period before the next clogging occurs. Further, according to the fifth aspect described above, estimation information including the remaining number of operations or the remaining period until the next clogging occurs is notified to the user, which can further improve user convenience.

[0015] According to a sixth aspect of the present technology, in any one of the first, second, or fourth aspects described above, when the control unit determines that no clogging has occurred, it predicts the remaining number of cleaning operations or the remaining period until the next clogging occurs based on a change in the actual supply amount or a change in the difference between the set supply amount and the actual supply amount in a plurality of cleaning operations, and causes the notification unit to issue prediction information including the predicted remaining number of operations or remaining period.

[0016] When notifying of clogging, if prediction information matching the progress of clogging such as the remaining number of cleaning operations and remaining period until maintenance is required is notified, not only when clogging requiring maintenance has progressed, the user can be prompted to prepare for maintenance. On the other hand, for example, when a treatment agent from a different manufacturer than the treatment agent last replenished in the storage tank is used, the progress of clogging will differ, so it may be difficult to specify when the next clogging will occur based on clogging history such as the number of cleaning operations before previous clogging occurs.

[0017] However, since the degree of progression of clogging can be grasped by using the change in the actual supply amount or the change in the supply amount difference between the set supply amount and the actual supply amount in a plurality of cleaning operations when no clogging occurs, it is possible to predict the remaining number of cleaning operations or the remaining period until the next timing when clogging occurs. According to the sixth aspect, even when no clogging has occurred, prediction information including the remaining number of cleaning operations or the remaining period until the next timing when clogging occurs is notified, thereby further improving user convenience.

[0018] According to a seventh aspect of the present technology, in the third or fourth aspect described above, when the control unit determines that no clogging has occurred, the control unit predicts the remaining number of cleaning operations or the remaining period until the next timing when clogging occurs based on a change in an actual driving condition or a change in a condition difference between an initial driving condition and the actual driving condition in a plurality of cleaning operations, causes the notification unit to notify prediction information including the predicted remaining number of operations or the remaining period.

[0019] When notifying of clogging, if prediction information matched to the progression of clogging such as the remaining number of cleaning operations and the remaining period until maintenance becomes necessary is notified, not only when clogging requiring maintenance has progressed, users can be prompted to prepare for maintenance. On the other hand, for example, when a processing agent from a different manufacturer from the processing agent last refilled into the storage tank is used, the progression degree of clogging will differ, so it may be difficult to specify the timing when the next clogging occurs based on clogging history such as the number of cleaning operations before previous clogging occurred.

[0020] However, by utilizing the changes in the actual driving conditions or the difference between the initial driving conditions and the actual driving conditions during multiple cleaning operations when no clogging occurs, the degree of clogging can be grasped, and the remaining number of cleaning operations or remaining period until the next clogging occurs can be predicted. Furthermore, according to the seventh embodiment described above, even when no clogging occurs, predictive information including the remaining number of cleaning operations or remaining period until the next clogging occurs is notified, thereby improving user convenience. [Brief explanation of the drawing]

[0021] [Figure 1] Figure 1 is a schematic cross-sectional view of a dishwasher according to Embodiment 1 of the present invention. [Figure 2] Figure 2 is a block diagram of a dishwasher according to Embodiment 1 of the present invention. [Figure 3] Figure 3 is a flowchart of the washing operation program in a dishwasher according to Embodiment 1 of the present invention. [Figure 4] Figure 4 is a data table showing the relationship between the driving conditions of the supply pump and the set supply amount of the processing agent in the detergent supply process of the washing operation in a dishwasher according to Embodiment 1 of the present invention. [Figure 5] Figure 5 is a flowchart of the detergent supply program in a dishwasher according to Embodiment 1 of the present invention. [Figure 6] Figure 6 is a flowchart of a clogging notification program in a dishwasher according to Embodiment 1 of the present invention. [Figure 7] Figure 7 is a flowchart of the detergent supply program in a dishwasher according to Embodiment 2 of the present invention. [Figure 8] Figure 8 is a flowchart of a clogging notification program in a dishwasher according to Embodiment 2 of the present invention. [Figure 9] Figure 9 is a graph showing the relationship between the number of washing cycles and the actual supply amount in a dishwasher according to Embodiment 2 of the present invention. [Figure 10] Figure 10 is a flowchart of the detergent supply program in a dishwasher according to Embodiment 3 of the present invention. [Figure 11] Figure 11 is a flowchart of a clogging notification program in a dishwasher according to Embodiment 3 of the present invention. [Figure 12] Figure 12 is a flowchart of the detergent supply program in a dishwasher according to Embodiment 4 of the present invention. [Figure 13] Figure 13 is a flowchart of a clogging notification program in a dishwasher according to Embodiment 4 of the present invention. [Modes for carrying out the invention]

[0022] (Embodiment 1) The following describes a washing device according to this embodiment applied to a dishwasher. The dishwasher 1 of this embodiment is a front-pull type installed below the countertop CT of a system kitchen. As shown in Figure 1, the dishwasher 1 comprises a housing 9, a movable body 6, a washing tank 7, a door body 70, and a lid body 8. In this specification, the side with the door body 70 is referred to as the front side, and when viewing the dishwasher 1 from the front side, the depth direction is referred to as the front-to-back direction, the width direction as the left-to-right direction, and the height direction as the up-and-down direction.

[0023] The enclosure 9 is a roughly rectangular box. The enclosure 9 has an enclosure opening 9H. The enclosure opening 9H opens up a wide area from the upper end to the lower end of the front of the enclosure 9, allowing communication between the inside and outside of the enclosure 9.

[0024] Figure 1 shows the housed state of the mobile unit 6. A slide rail mechanism (not shown) is positioned between the side of the mobile unit 6 and the inner wall surface of the housing 9. The mobile unit 6 can move between the housed position shown in Figure 1 and a drawer position (not shown) that is reached by moving forward from the housed position, via this slide rail mechanism. The mobile unit 6 is equipped with a washing tank 7 and a door 70.

[0025] The washing tank 7 is a roughly rectangular box. The internal space of the washing tank 7 for washing tableware T is partitioned by a front wall 7A, a rear wall 7B, left and right side walls, and a bottom wall. The washing tank 7 also has an opening 7H that opens up the top of its internal space.

[0026] The door body 70 is located in front of the washing tank 7. A user interface 79, which will be described later, is provided on the upper surface of the door body 70.

[0027] When the movable body 6 is in the storage position shown in Figure 1, the door 70 closes the housing opening 9H, and the cleaning tank 7 is housed inside the housing 9. Although not shown, when the movable body 6 moves to the pull-out position, the door 70 opens the housing opening 9H, and the opening 7H of the cleaning tank 7 is exposed from the housing 9. The lid 8 lowers to close the opening 7H of the cleaning tank 7 when the movable body 6 is in the storage position shown in Figure 1.

[0028] When the movable body 6 is moved to the pull-out position and the opening 7H of the washing tank 7 is exposed from the housing 9, the user can place the tableware T into the washing tank 7 or remove the tableware T from the washing tank 7 through the opening 7H. The tableware T to be washed are, for example, bowls, plates, glasses and other eating and drinking utensils, or chopsticks, spoons, forks, etc.

[0029] The housing 9 contains a water supply pipe P1, a water supply solenoid valve 69, and a drain pipe P2. The water supply pipe P1 extends forward between the bottom wall of the movable body 6 and the bottom wall of the washing tank 7 and communicates with a supply port 77 provided on the front wall 7A of the washing tank 7. The water supply pipe P1 supplies water into the washing tank 7 from a water source (not shown) located outside the dishwasher 1. By opening and closing the water supply solenoid valve 69, the supply of water into the washing tank 7 can be switched on and off. The drain pipe P2 drains the washing water from the washing tank 7 to the outside of the dishwasher 1.

[0030] A treatment agent supply unit 5 is provided in front of the washing tank 7. Above the treatment agent supply unit 5 is a storage tank 50, which stores liquid detergent for breaking down and washing away dirt adhering to dishes T. A treatment agent replenishment port 50H for replenishing the detergent is provided at the upper end of the storage tank 50. The treatment agent supply unit 5 automatically supplies detergent to the washing tank 7 by mixing the detergent in the storage tank 50 with the water supplied to the washing tank 7 at a predetermined timing. In addition to detergent, a liquid rinse can be used as a treatment agent to improve water drainage of dishes T and to obtain a glossy finish after washing. The storage tank 50 has an internal volume that can store the amount of detergent necessary to perform one or more washing operations. A float-type remaining amount switch (remaining amount detection means) 57 is provided inside the storage tank 50. The remaining amount switch 57 detects the remaining amount of detergent in the storage tank 50, and when the remaining amount of detergent in the storage tank 50 decreases, it outputs a detection signal to the control unit C1 to indicate this. As a means for detecting the remaining amount, an electrode-type device may be used that detects the remaining amount of the treatment agent based on the magnitude of the electrical resistance value.

[0031] The connection port on the bottom wall of the storage tank 50 and the supply port 77 of the washing tank 7 are connected by a supply passage 51. A water supply pipe P1 is connected to the supply passage 51. The supply passage 51 is equipped with, in order from the upstream storage tank 50 side, a flow sensor (flow detection means) 52 for detecting the flow rate of detergent circulating in the supply passage 51, an upstream check valve 53, a supply pump 54, a downstream check valve 55, and a solenoid valve 56. The solenoid valve 56 is located upstream of the connection point between the supply passage 51 and the water supply pipe P1. By opening and closing the solenoid valve 56, the supply and cessation of detergent can be switched depending on whether detergent is mixed into the water supplied to the washing tank 7 or not. A positive displacement plunger pump is used for the supply pump 54, and the plunger pump is driven when detergent is mixed into the water supplied to the washing tank 7. In addition to a plunger pump, the supply pump 54 may also be a positive displacement tube pump, bellows pump, screw pump, gear pump, etc.

[0032] A water reservoir 7P for storing washing water is provided at the bottom of the washing tank 7. A dish basket 7C is also placed inside the washing tank 7. Dishes T are placed on the dish basket 7C. Although not shown in the diagram, the washing tank 7 is provided with an exhaust passage. The exhaust passage opens at the top of the front of the door 70 and communicates with the outside of the washing tank 7. The air inside the washing tank 7 is exhausted to the front of the housing 9 through the exhaust passage.

[0033] The nozzle 61 is positioned inside the washing tank 7. The nozzle 61 is capable of spraying washing water into the washing tank 7 from multiple discharge holes. The nozzle 61 is configured to change the spray direction in various directions in order to reliably wash multiple dishes T stacked inside the washing tank 7, and to wash the inner wall surface of the washing tank 7 and the dish basket 7C.

[0034] The washing and draining pump 62 is installed at the bottom of the water reservoir 7P of the washing tank 7. When operating in the forward direction, the washing and draining pump 62 supplies the washing water stored in the water reservoir 7P of the washing tank 7 to the nozzle 61, causing it to be sprayed into the washing tank 7. The sprayed washing water is stored in the water reservoir 7P and is repeatedly supplied to the nozzle 61 by the washing and draining pump 62. When operating in the reverse direction, the washing and draining pump 62 drains the washing water in the washing tank 7 to the outside of the dishwasher 1 via the food residue filter 67 and the drain pipe P2.

[0035] The heater 63 is located at the bottom of the water reservoir 7P. The heater 63 heats the washing water stored in the water reservoir 7P of the washing tank 7 and the air inside the washing tank 7. The drying fan 68 rotates while the heater 63 is operating, sending the heated air into the washing tank 7 to dry the dishes T. The air sent into the washing tank 7 by the drying fan 68 is exhausted to the outside of the dishwasher 1 via the exhaust passage.

[0036] The dishwasher 1 includes a control unit C1. The control unit C1 is an electronic circuit unit composed of a CPU, memory, interface circuit, etc. (not shown). As shown in Figure 2, the control unit C1 includes a storage unit C12. The storage unit C12 is composed of storage elements such as ROM and RAM.

[0037] The memory unit C12 stores various programs that the control unit C1 executes to operate the dishwasher 1, such as the washing operation program and detergent supply program described later. The memory unit C12 also stores various information such as the settings information and notification information of the dishwasher 1, as well as setting information for executing various programs, as needed.

[0038] The control unit C1 receives detection signals from the flow sensor 52 and the remaining amount switch 57. The control unit C1 also receives detection signals from sensors (not shown), such as a temperature sensor, a water level sensor, a position sensor that detects whether the washing tank 7 is in its storage position, and a lock sensor that detects whether the washing tank 7 is locked in its storage position. The control unit C1 then outputs control signals via the drive circuit 90 to control the operation of the solenoid valve 56, supply pump 54, nozzle 61, washing / drainage pump 62, water supply solenoid valve 69, heater 63, drying fan 68, speaker 80, etc., and executes various operations.

[0039] The user interface 79 includes an operation instruction unit 79A and a display unit 79B. Although not shown, operation instructions for the dishwasher 1 are input via multiple switches on the operation instruction unit 79A, and the input results are output to the control unit C1. The display unit 79B displays information related to the operation of the dishwasher 1 output from the control unit C1. Similarly, the speaker 80 provides audio information related to the operation of the dishwasher 1. Therefore, the display unit 79B and the speaker 80 constitute the notification unit.

[0040] Next, the washing operation program will be described with reference to Figures 3 and 4. The washing operation in this embodiment includes a washing process, a rinsing process, and a drying process. A pre-rinsing process may be provided before the washing process. When the user places the dishes T into the washing tank 7, turns on the power switch using the operation instruction unit 79A (not shown), selects a predetermined washing course, and turns on the start switch, the washing operation begins. Once the washing operation begins, the control unit C1 first executes the washing process (step S1). In this washing process, the control unit C1 controls the water supply solenoid valve 69 to supply water to the washing tank 7. Next, the control unit C1 executes the detergent supply program, which will be described later, and drives the supply pump 54 with an initial number of drives (initial drive conditions) that result in a predetermined set supply amount of detergent according to the washing course selected by the user (for example, the standard course or the thorough course) stored in the memory unit C12 shown in Figure 4, and supplies detergent to the washing tank 7. The initial number of drives is the set value when the supply pump 54 is driven to the set supply amount corresponding to each cleaning course under initial conditions where the supply path 51 is not clogged. For example, when a reciprocating pump such as a plunger pump is used, the amount of treatment agent supplied is changed by the reciprocating motion of the plunger, so as shown in Figure 4, the number of drives or the drive time may be set as the initial drive conditions. Also, when a rotary pump such as a screw pump or gear pump is used, the drive speed or the drive time may be set as the initial drive conditions. Note that the initial drive conditions may be set by the manufacturer or by the user.

[0041] When the detergent supply is finished, the control unit C1 stops the drive of the supply pump 54 and closes the solenoid valve 56. The control unit C1 also operates the washing / draining pump 62 in the forward direction, spraying washing water from the nozzle 61 into the washing tank 7 to wash the dishes T. When the washing process is finished, the control unit C1 operates the washing / draining pump 62 in the reverse direction, draining the washing water in the washing tank 7 to the outside of the dishwasher 1, and then performs the rinsing process (step S2).

[0042] In the rinsing process, the control unit C1 opens the water supply solenoid valve 69 and supplies water into the washing tank 7 via the water supply pipe P1. At this time, if the dishwasher 1 has a storage tank for storing rinse as a treatment agent, separate from the detergent storage tank 50, rinse may also be supplied to the washing tank 7.

[0043] Then, the control unit C1 operates the washing and drainage pump 62 in the forward direction, spraying washing water from the nozzle 61 into the washing tank 7 to rinse the dishes T. When the rinsing process is complete, the control unit C1 operates the washing and drainage pump 62 in the reverse direction, draining the washing water used for rinsing in the washing tank 7 to the outside of the dishwasher 1, and then performs the drying process (step S3).

[0044] During the drying process, the control unit C1 operates the heater 63 and drying fan 68 as appropriate to send heated air into the washing tank 7 to dry the dishes T inside the washing tank 7. When the drying process is complete, the control unit C1 terminates the washing operation. After the washing operation is complete, the control unit C1 executes the clogging notification program described later.

[0045] Next, the detergent supply program and the clogging notification program will be described with reference to Figures 5 and 6. Although not shown in the figures, in this embodiment, when clogging occurs in the supply path 51 and the user performs maintenance as described later, the control unit C1 is configured to reset the clogging timer, which measures the period from the maintenance to the occurrence of clogging, and to start a new clogging timer, which measures the period until clogging occurs again.

[0046] When the cleaning process begins and the detergent supply process to the cleaning tank 7 described above arrives, the control unit C1 starts the detergent supply program shown in Figure 5. The control unit C1 then opens the solenoid valve 56 and drives the supply pump 54 for an initial number of drives that corresponds to the set supply amount for the cleaning course selected by the user (steps S101 to S102). Then, the control unit C1 calculates the actual amount of detergent supplied to the cleaning tank 7 from the detergent flow rate detection signal detected by the flow sensor 52 when the supply pump 54 is driven for the initial number of drives (step S103).

[0047] Next, the control unit C1 compares the set supply amount with the actual supply amount. If the difference in supply amount between the set supply amount and the actual supply amount is greater than or equal to a predetermined supply amount threshold (for example, 40% of the set supply amount) (Yes in step S104), it determines that there is a blockage in the supply path 51 and sets the blockage flag F to "1" (step S105). If the difference in supply amount between the set supply amount and the actual supply amount is less than the supply amount threshold (No in step S104), it is considered that there is little shortage of detergent due to the blockage, so the control unit C1 stops the supply pump 54, closes the solenoid valve 56, terminates the detergent supply program, and continues the washing operation (steps S109-S110).

[0048] If the difference in supply amount between the set supply amount and the actual supply amount is greater than or equal to the supply amount threshold (Yes in step S104), the control unit C1 additionally drives the supply pump 54 in predetermined drive units (for example, once at a time) so that the actual supply amount calculated from the detection signal of the detergent flow rate detected by the flow sensor 52 is approximately equal to the set supply amount (steps S106 to S108). Preferably, the actual supply amount after the additional driving of the supply pump 54 is the same as the set supply amount. However, with a supply pump 54 that supplies a fixed amount of treatment agent per cycle by reciprocating motion, such as a reciprocating plunger pump, it is difficult to perfectly match the actual supply amount with the set supply amount. On the other hand, even if clogging occurs in the supply passage 51, as long as it is not a complete blockage, the actual supply amount can be brought closer to the set supply amount by additionally driving the supply pump 54. For this reason, in this embodiment, the actual supply amount of detergent ultimately supplied to the washing tank 7 may be less than the set supply amount or greater than the set supply amount (for example, within 20% above or below the set supply amount). This makes it possible to resolve detergent shortages even if the supply path 51 becomes clogged. Furthermore, to improve the cleaning effect, it is preferable to additionally drive the supply pump 54 until the actual supply amount is at least equal to or greater than the set supply amount.

[0049] When the actual supply amount calculated by additionally driving the supply pump 54 is approximately equal to the set supply amount (Yes in step S108), the control unit C1 terminates the detergent supply program and continues the washing operation, as described above.

[0050] When the washing operation is completed, the control unit C1 starts the clogging notification program shown in Figure 6. The control unit C1 then determines whether the clogging flag F is set to "1" (step S151). If the clogging flag F is set to "1" (Yes in step S151), the control unit C1 obtains the remaining amount of detergent in the storage tank 50 based on the detection signal output from the remaining amount switch 57. Next, the control unit C1 determines whether the remaining amount of detergent in the storage tank 50 is equal to or greater than a predetermined remaining amount threshold (for example, 10% of the internal volume of the storage tank 50) (step S152).

[0051] If the remaining amount of detergent in the storage tank 50 is above the remaining amount threshold (Yes in step S152), then a certain amount of detergent remains in the storage tank 50 and the supply passage 51 cannot be cleaned. Therefore, the control unit C1 notifies the user via the display unit 79B or speaker 80 that there is a blockage in the supply passage 51 and prompts the user to prepare to clean the supply passage 51 (for example, a code display from the display unit 79B indicating that maintenance preparation is necessary, or an audio announcement from the speaker 80 saying "The detergent passage is blocked. Please prepare to clean") (step S153). This allows the user to prepare to perform maintenance when the remaining amount of detergent in the storage tank 50 becomes low.

[0052] On the other hand, if the remaining amount of detergent in the storage tank 50 is below the remaining amount threshold (No in step S152), the control unit C1 will notify the user via the display unit 79B or speaker 80 that there is a blockage in the supply passage 51 and prompt the user to clean the supply passage 51 (for example, a code display from the display unit 79B indicating that maintenance is needed, or an audio announcement from the speaker 80 saying "The detergent passage is clogged. Please clean it") (step S154). This allows the user to perform maintenance immediately.

[0053] Although not shown in the diagram, when the user replenishes the storage tank 50 with hot water from the treatment agent supply port 50H and performs a special operation (for example, pressing multiple switches simultaneously) on the operation instruction unit 79A, the control unit C1 opens the solenoid valve 56 and performs maintenance by driving the supply pump 54 for a predetermined time. This dissolves the detergent that has adhered to the supply path 51, thereby clearing the blockage. Once the maintenance is complete, the control unit C1 resets the blockage flag F to "0", resets the blockage timer described above, and measures a new blockage period.

[0054] If it is determined that no clogging has occurred during the cleaning operation and the clogging flag F is not set to "1" (No in step S151), the control unit C1 compares the time since the last maintenance with the most recent previous clogging period, from the maintenance before last until the last time clogging occurred (step S156). Then, if the timed period is less than the previous clogging period (No in step S156), and the difference between the previous clogging period (e.g., week 20) ​​and the timed period (e.g., week 18) is less than or equal to a predetermined period threshold (e.g., 2 weeks) (Yes in step S157), the control unit C1 causes the display unit 79B and speaker 80 to broadcast guideline information including the remaining time until the next clogging occurs in the supply path 51 (for example, a code display on the display unit 79B recommending cleaning the supply path 51 in 2 weeks, or an audio announcement from the speaker 80 saying "We recommend cleaning the detergent passage in 2 weeks") (step S158). This allows the user to prepare to perform maintenance at the appropriate time. In addition, since the user is made aware of the estimated timing of the next clogging, replenishment of detergent in the storage tank 50 is prevented, and the user can promptly perform maintenance when the amount of detergent remaining in the storage tank 50 becomes low. The clogging period may be the period of the previous clogging, or, if there are multiple past clogging periods, it may be the average of those periods. Alternatively, the clogging period may be the shortest or longest clogging period in the past. The control unit C1 may also store a reference clogging period to calculate the remaining period until the first clogging occurs. Furthermore, instead of the clogging period, the control unit C1 may compare the number of cleaning operations performed before the previous clogging occurred (total number of operations) with the number of operations performed since the last maintenance, and provide estimated information including the remaining number of operations until the next clogging occurs via the display unit 79B or speaker 80. Similarly, the estimated information may be changed according to the remaining amount of detergent in the storage tank 50.

[0055] If the timed period exceeds the previous clogging period (Yes in step S156), there is a high probability of clogging occurring. Therefore, even if there is no clogging in the supply path 51 (No in step S151), if the remaining amount of detergent in the storage tank 50 is above the remaining amount threshold (Yes in step S152), the control unit C1 will notify the user of maintenance preparation information via the display unit 79B or speaker 80 to prepare for cleaning the supply path 51 after each cleaning operation (step S153). Also, if the remaining amount of detergent in the storage tank 50 is below the remaining amount threshold (No in step S152), the control unit C1 will notify the user of maintenance information via the display unit 79B or speaker 80 to prepare for cleaning the supply path 51 after each cleaning operation (step S154).

[0056] As described in detail above, according to this embodiment, when the supply amount difference between the set supply amount and the actual supply amount exceeds the supply amount threshold, maintenance preparation information and maintenance information notification corresponding to the occurrence of clogging are notified, so that the user can recognize the clogging of the supply path 51 which is the cause of poor cleaning and be prompted to perform maintenance. This improves user convenience.

[0057] Furthermore, according to this embodiment, even if clogging occurs in the supply path 51 and the actual supply amount falls below the set supply amount, the supply pump 54 is additionally driven so that the actual supply amount of detergent supplied to the washing tank 7 is approximately the set supply amount. This eliminates detergent shortages and prevents washing failures. Also, even if clogging occurs, users usually do not know the amount of detergent shortage and therefore cannot determine how much detergent needs to be added. However, according to this embodiment, the additional driving of the supply pump 54 replenishes the insufficient detergent, allowing the washing operation to be performed with the appropriate amount of detergent. This further improves user convenience.

[0058] Furthermore, according to this embodiment, the notification information corresponding to the occurrence of clogging is changed according to the remaining amount of detergent in the storage tank 50, so that the user can be notified of appropriate information for performing maintenance.

[0059] Furthermore, according to this embodiment, the user is notified of estimated information including the remaining number of operations or remaining time until the next clogging occurs, thereby further improving user convenience.

[0060] (Embodiment 2) This embodiment has the same configuration as Embodiment 1, except that the operation of the detergent supply program and the clogging notification program are different. In the following, the same reference numbers as in Embodiment 1 refer to the same components. In this embodiment, unlike Embodiment 1, a clogging timer for measuring the clogging period is not set.

[0061] In this embodiment, as in Embodiment 1, when the detergent supply process to the washing tank 7 arrives, the control unit C1 starts the detergent supply program shown in Figure 7. Then, when the supply pump 54 is driven for an initial number of drives that corresponds to the set supply amount for the washing course selected by the user, the control unit C1 calculates the actual amount of detergent supplied to the washing tank 7 from the detection signal of the detergent flow rate detected by the flow sensor 52 (steps S201 to S203). Next, the set supply amount and the actual supply amount are compared, and if the difference in supply amount between the set supply amount and the actual supply amount is greater than or equal to a predetermined supply amount threshold (for example, 40% of the set supply amount) (Yes in step S204), it is determined that a blockage has occurred in the supply path 51, and the blockage flag F is set to "1" (step S205). The operation when a blockage has occurred in the supply path 51 (steps S206 to S210) is the same as those in Embodiment 1 (steps S106 to S110).

[0062] On the other hand, if the difference between the set supply amount and the actual supply amount is less than the supply amount threshold (No in step S204), the control unit C1 stores the actual supply amount and adds "1" to the number of wash operation history U and stores it (step S220), then terminates the detergent supply program and continues the wash operation.

[0063] When the cleaning operation is completed, the control unit C1 starts the clogging notification program shown in Figure 8. Then, the control unit C1 determines whether the clogging flag F is set to "1" (step S251). The operation when the clogging flag F is set to "1" (steps S252 to S254) is the same as those in Embodiment 1 (steps S152 to S154).

[0064] On the other hand, if the clogging flag F is not set to "1" (No in step S251), the control unit C1 determines whether the number of operation history U is equal to or greater than a predetermined measurement threshold (for example, 10 times) (step S255). Then, if the number of operation history U is equal to or greater than the measurement threshold (Yes in step S255), the control unit C1 predicts the number of clogging operations in which clogging will occur next in the supply path 51 based on the change in the actual supply amount during multiple cleaning operations (step S256).

[0065] Figure 9 shows an example of the correlation between the number of wash cycles used to predict the number of cycles at which clogging occurs in the supply path 51 and the actual supply amount when the supply pump 54 is driven for the initial number of cycles. In this dishwasher 1, the set supply amount is set to A0, and when the actual supply amount drops to Ax, it is determined that clogging has occurred in the supply path 51. Note that Figure 9 shows the change in actual supply amount when the same detergent is used, but the change in actual supply amount will also differ when different detergents are used.

[0066] As shown in Figure 9, the actual supply volume decreases as the number of cleaning operations increases. Therefore, based on the change in the actual supply volume during multiple cleaning operations when no clogging occurs, it is possible to extrapolate the predicted number of cleaning operations Ux that will cause clogging in the supply path 51 next.

[0067] Therefore, the control unit C1 compares the predicted number of clogging operations with the number of operations in the operation history up to the present. If the number of operations in the operation history is less than the predicted number of clogging operations (No in step S257), and the difference between the predicted number of clogging operations and the number of operations in the operation history is less than or equal to a predetermined remaining number threshold (e.g., 10 times) (Yes in step S258), the control unit C1 causes the display unit 79B and speaker 80 to broadcast prediction information including the remaining number of operations until the next clogging occurs (for example, a code display on the display unit 79B recommending cleaning the supply path 51 in 10 more operations, or an audio announcement from speaker 80 saying "We recommend cleaning the detergent passage after 10 more cleaning operations") (step S259). This allows the user to prepare to perform maintenance at the appropriate time. Alternatively, a period of time may be used instead of the number of cleaning operations, and prediction information including the remaining period may be broadcast.

[0068] If the number of operation history exceeds the number of operation counts that would cause clogging (Yes in step S257), there is a high possibility that clogging will occur. Therefore, even if clogging has not occurred (No in step S251), if the remaining amount of detergent in the storage tank 50 is above the remaining amount threshold (Yes in step S252), the control unit C1 will notify the user of maintenance preparation information via the display unit 79B or speaker 80 to prompt them to prepare to clean the supply path 51 after each cleaning operation (step S253). Also, if the remaining amount of detergent in the storage tank 50 is below the remaining amount threshold (No in step S252), the control unit C1 will notify the user of maintenance information via the display unit 79B or speaker 80 to prompt them to clean the supply path 51 after each cleaning operation (step S254).

[0069] When providing clogging notifications, notifying users not only when clogging requiring maintenance has progressed, but also providing predictive information tailored to the progression of clogging, such as the remaining number of cleaning operations or the remaining period until maintenance is needed, can prompt users to prepare for maintenance. On the other hand, for example, if a different manufacturer's treatment agent is used than the one previously replenished in the storage tank 50, the degree of clogging will differ. Therefore, the number of operations and the period until clogging occurs in the supply line 51 may vary depending on the user's usage. Consequently, it may be difficult to determine the timing of the next clogging based on clogging history, such as the number of cleaning operations performed before clogging occurred in the past. Also, if clogging has not occurred in the past, the clogging history cannot be used.

[0070] However, as described above, by utilizing the change in the actual supply amount during multiple cleaning operations when no clogging occurs, the degree of clogging can be grasped, and the remaining number of cleaning operations or remaining period until the next clogging occurs in the supply path 51 can be predicted. Furthermore, according to this embodiment, even when no clogging occurs in the supply path 51, prediction information including the remaining number of operations or remaining period until the next clogging occurs is notified, thereby improving user convenience. In the above embodiment, the change in the actual supply amount is utilized, but the change in the supply amount difference between the set supply amount and the actual supply amount may also be utilized.

[0071] Furthermore, in this embodiment as in Embodiment 1, if the supply amount difference between the set supply amount and the actual supply amount exceeds the supply amount threshold, notification information corresponding to the occurrence of clogging is provided, allowing the user to recognize clogging in the supply path 51, which is causing cleaning problems, and prompting maintenance. Also, even if clogging occurs in the supply path 51 and the actual supply amount becomes less than the set supply amount, the supply pump 54 is additionally driven so that the actual supply amount becomes approximately the set supply amount, thus eliminating cleaning problems due to insufficient detergent. In addition, if clogging occurs in the supply path 51, the notification information corresponding to the occurrence of clogging is changed according to the remaining amount of detergent in the storage tank 50, so that the user is notified of appropriate information for performing maintenance.

[0072] (Embodiment 3) This embodiment has the same configuration as Embodiment 1, except that the operation in the detergent supply program is different. In the following, the same reference numbers as in Embodiment 1 refer to the same components.

[0073] In this embodiment, as in Embodiment 1, when the detergent supply process to the washing tank 7 arrives, the control unit C1 starts the detergent supply program shown in Figure 10. Then, the supply pump 54 is driven in predetermined units of drives (for example, once at a time) (steps S301 to S304) so ​​that the actual amount of detergent supplied to the washing tank 7, calculated from the detergent flow rate detection signal detected by the flow sensor 52, is approximately the set supply amount for the washing course selected by the user. As previously mentioned, depending on the type of supply pump 54, it may be difficult to perfectly match the actual supply amount with the set supply amount. However, even if clogging occurs in the supply passage 51, as long as it is not a complete blockage, the supply pump 54 can be driven so that the actual supply amount approaches the set supply amount. Therefore, as above, the final actual amount of detergent supplied to the washing tank 7 may be less than or greater than the set supply amount (for example, within 20% above or below the set supply amount). This makes it possible to eliminate detergent shortages even if clogging occurs in the supply passage 51.

[0074] Next, the control unit C1 compares the initial number of drives, which is the initial drive condition, with the actual number of drives, which is the actual drive condition when the supply pump 54 is driven so that the calculated actual amount of detergent supplied to the washing tank 7 is approximately the set supply amount (step S305). If the difference in the number of drives between the initial number of drives and the actual number of drives is greater than or equal to a predetermined condition threshold (for example, 40% of the initial number of drives) (Yes in step S305), the control unit C1 determines that a blockage has occurred in the supply path 51, sets the blockage flag F to "1", terminates the detergent supply program, and continues the washing operation (steps S306-S308). On the other hand, if the difference in the number of drives between the initial number of drives and the actual number of drives is less than the condition threshold (No in step S305), it is considered that there is little shortage of detergent due to blockage, so the control unit C1 terminates the detergent supply program and continues the washing operation.

[0075] When the cleaning operation is completed, the control unit C1 starts the clogging notification program shown in Figure 11. The operation of the clogging notification program in this embodiment (steps S351 to S358) is the same as that in Embodiment 1 (steps S151 to S158).

[0076] As described in detail above, according to this embodiment, if the difference between the initial number of drives and the actual number of drives exceeds a condition threshold, notification information corresponding to the occurrence of clogging is provided. This allows the user to recognize the clogging of the supply path 51, which is causing poor cleaning, while simultaneously resolving the shortage of detergent, thereby encouraging maintenance. This improves user convenience.

[0077] Furthermore, in this embodiment as well, if a blockage occurs in the supply path 51, the notification information corresponding to the occurrence of the blockage is changed according to the remaining amount of detergent in the storage tank 50, so that the user can be notified of appropriate information for performing maintenance.

[0078] (Embodiment 4) This embodiment has the same configuration as Embodiment 3, except that the operation of the detergent supply program and the clogging notification program differs from that of Embodiment 3. In the following, the same reference numbers as in Embodiment 1 refer to the same configuration. In this embodiment, as in Embodiment 2, a clogging timer for measuring the clogging period is not set.

[0079] In this embodiment, as in Embodiment 3, when the detergent supply process to the washing tank 7 arrives, the control unit C1 starts the detergent supply program shown in Figure 12. Then, the supply pump 54 is driven so that the actual amount of detergent supplied to the washing tank 7, calculated from the detergent flow rate detection signal detected by the flow sensor 52, is approximately the set supply amount for the washing course selected by the user (steps S401 to S404).

[0080] Next, the control unit C1 compares the initial number of drives with the actual number of drives of the supply pump 54 when the supply pump 54 is driven so that the calculated actual amount of detergent supplied to the washing tank 7 is approximately the set supply amount (step S405). If the difference in the number of drives between the initial number of drives and the actual number of drives is greater than or equal to a predetermined condition threshold (for example, 40% of the initial number of drives) (Yes in step S405), it determines that a blockage has occurred in the supply path 51, sets the blockage flag F to "1", terminates the detergent supply program, and continues the washing operation (steps S406-S408).

[0081] On the other hand, if the difference between the initial number of drives and the actual number of drives is less than the condition threshold (No in step S405), the control unit C1 stores the actual number of drives and adds "1" to the number of wash operation history U and stores it (step S420), then terminates the detergent supply program and continues the wash operation.

[0082] When the cleaning operation is completed, the control unit C1 starts the clogging notification program shown in Figure 13. Then, the control unit C1 determines whether the clogging flag F is set to "1" (step S451). The operation when the clogging flag F is set to "1" (steps S452 to S454) is the same as those in Embodiment 3 (steps S352 to S354).

[0083] On the other hand, if the clogging flag F is not set to "1" (No in step S451), the control unit C1 determines whether the number of operation history cycles U is equal to or greater than a predetermined measurement threshold (for example, 10 times) (step S455). Then, if the number of operation history cycles U is equal to or greater than the measurement threshold (Yes in step S455), the control unit C1 predicts the next clogging operation cycle in which clogging will occur in the supply path 51, based on the change in the actual number of drives during multiple cleaning operations (step S456). Although not shown in the figures, the prediction of the next clogging operation cycle in which clogging will occur in the supply path 51, based on the change in the actual number of drives, is the same as in Embodiment 2. Therefore, the predicted number of operations until clogging occurs is compared with the number of operations in the operation history up to the present. If the number of operations in the operation history is less than the predicted number of operations until clogging occurs (No in step S457), and the difference between the predicted number of operations until clogging occurs and the number of operations in the operation history is less than or equal to a predetermined remaining number threshold (for example, 10 times) (Yes in step S458), the display unit 79B and speaker 80 are used to notify the user of prediction information including the remaining number of operations until clogging occurs next (step S459). This allows the user to prepare to perform maintenance at the appropriate time. Alternatively, instead of the remaining number of operations, prediction information including the remaining period may be notified. If the number of operations in the operation history is greater than or equal to the predicted number of operations until clogging occurs (Yes in step S457), there is a high possibility of clogging occurring. Therefore, even if clogging has not occurred (No in step S451), the control unit C1 notifies the user of maintenance preparation information or maintenance information based on the remaining amount of detergent in the storage tank 50 (steps S452-S454).

[0084] As described in detail above, according to this embodiment, similar to Embodiment 2, even if clogging does not occur in the supply path 51, predictive information including the remaining number of operations or remaining period until the next clogging occurs is notified, thereby further improving user convenience. In the above embodiment, the change in the actual number of operations is used, but the change in the difference between the initial number of operations and the actual number of operations may also be used.

[0085] Furthermore, in this embodiment as in Embodiment 3, if the difference between the initial number of drives and the actual number of drives exceeds a condition threshold, notification information corresponding to the occurrence of clogging is provided. This allows the user to recognize clogging in the supply path 51, which is causing poor cleaning, and encourages maintenance. In addition, if clogging occurs in the supply path 51, the notification information corresponding to the occurrence of clogging is changed according to the remaining amount of detergent in the storage tank 50, so that the user is provided with appropriate notification information for performing maintenance.

[0086] (Other embodiments) (1) In the above embodiment, a dishwasher is used as the washing device. However, the present invention can also be applied to washing devices such as washing machines and washer-dryers that have a function to automatically supply processing agents such as detergent and fabric softener from a storage tank to the washing tank. It can also be applied to dishwashers that do not have a drying function.

[0087] (2) In the above embodiment, a flow rate detection means for detecting the flow rate of the treatment agent is interposed in the supply path upstream of the connection to the water supply pipe. However, if the flow rate of water flowing through the water supply pipe is known, the flow rate detection means may be interposed in the supply path downstream of the connection to the water supply pipe. Alternatively, the treatment agent may be supplied directly from the storage tank to the washing tank. Alternatively, the treatment agent may be supplied to the washing tank without installing a solenoid valve in the supply path. Furthermore, the connection position between the supply path and the water supply pipe is not limited to the position shown in the above embodiment; the solenoid valve may be connected in the supply path upstream of the flow rate detection means or the upstream check valve. Additionally, the flow rate detection means may be interposed in the supply path downstream of the supply pump. Furthermore, although the water supply pipe is connected to the supply path in the above embodiment, the supply path and the water supply pipe may be disconnected as separate circuits.

[0088] (3) In the above embodiment, the period until past clogging occurs is set to the period from when the user performs maintenance until clogging occurs in the supply line. However, in the present invention, the period until past clogging occurs may be set to the total time of past cleaning operations from when the user performs maintenance until clogging occurs in the supply line.

[0089] Although each embodiment has been described in detail above, these are merely illustrative and do not limit the scope of the claims. The technology described in the claims includes various modifications and changes to the specific examples illustrated above. The technical elements described in this specification or drawings exhibit technical usefulness individually or in various combinations, and are not limited to the combinations described in the claims at the time of filing. Furthermore, the technology illustrated in this specification or drawings can achieve multiple objectives simultaneously, and achieving even one of these objectives itself constitutes technical usefulness. [Explanation of Symbols]

[0090] 1. Dishwasher 7 Washing Tank 5 Processing and supply unit 50 storage tanks 51 Supply route 52 Flow Sensor 54 Supply pump 57 Battery level switch 79B Display section 80 speakers C1 Control Unit

Claims

1. A washing tank for containing and washing the objects to be washed, A treatment agent supply unit that supplies a liquid treatment agent to the washing tank, A notification unit that broadcasts predetermined information, It comprises a control unit and, The treatment agent supply unit is a cleaning apparatus comprising: a storage tank for storing the treatment agent; a supply channel connecting the storage tank and the cleaning tank; a supply pump interposed in the supply channel for supplying the treatment agent from the storage tank to the cleaning tank; and a flow rate detection means interposed in the supply channel upstream or downstream of the supply pump for detecting the flow rate of the treatment agent circulating through the supply channel. The control unit stores the initial driving conditions for the supply pump, which supplies the treatment agent stored in the storage tank to the washing tank at a predetermined set supply amount, under initial conditions where there is no clogging in the supply path. During the washing operation, the supply pump is driven under initial operating conditions so that the treatment agent stored in the storage tank is supplied to the washing tank at the set supply rate. The actual amount of treatment agent supplied to the washing tank is calculated from the flow rate of the treatment agent detected by the flow rate detection means when the supply pump is driven under initial operating conditions. By comparing the set supply amount with the calculated actual supply amount of the processing agent, if the difference in supply amount between the set supply amount and the actual supply amount is greater than or equal to a predetermined supply amount threshold, it is determined that a blockage has occurred in the supply path. A cleaning device that, upon detecting the occurrence of clogging, issues notification information corresponding to the clogging from its notification unit.

2. In the cleaning apparatus according to claim 1, The control unit, upon detecting that clogging has occurred, drives an additional supply pump to ensure that the actual amount of treatment agent supplied, calculated from the flow rate of the treatment agent detected by the flow rate detection means, is approximately equal to the set supply amount.

3. A washing tank for containing and washing the objects to be washed, A treatment agent supply unit that supplies a liquid treatment agent to the washing tank, A notification unit that broadcasts predetermined information, It comprises a control unit and, The treatment agent supply unit is a cleaning apparatus comprising: a storage tank for storing the treatment agent; a supply channel connecting the storage tank and the cleaning tank; a supply pump interposed in the supply channel for supplying the treatment agent from the storage tank to the cleaning tank; and a flow rate detection means interposed in the supply channel upstream or downstream of the supply pump for detecting the flow rate of the treatment agent circulating through the supply channel. The control unit stores the initial driving conditions for the supply pump, which supplies the treatment agent stored in the storage tank to the washing tank at a predetermined set supply amount, under initial conditions where there is no clogging in the supply path. During the washing operation, the supply pump is driven so that the actual amount of treatment agent supplied to the washing tank, calculated from the flow rate of the treatment agent detected by the flow rate detection means, is approximately equal to the set supply amount. The initial driving conditions are compared with the actual driving conditions when the supply pump is driven so that the actual amount of processing agent supplied is approximately the set supply amount. If the difference between the initial driving conditions and the actual driving conditions is greater than or equal to a predetermined threshold, it is determined that clogging has occurred in the supply path. When a blockage is detected, the system is configured to send notification information corresponding to the blockage from the notification unit. A cleaning device in which the initial driving conditions, the actual driving conditions, and the predetermined condition thresholds are set based on the number of times the supply pump is driven, the driving rotation speed, or the driving time.

4. In the cleaning apparatus according to claim 1 or 3, The treatment agent supply unit has a remaining amount detection means for detecting the remaining amount of treatment agent in the storage tank. The control unit, upon determining that clogging has occurred, changes the notification information corresponding to the occurrence of clogging according to the remaining amount of processing agent detected by the remaining amount detection means.

5. In the cleaning apparatus according to claim 1 or 3, The control unit stores the number of cleaning operations performed before a past clogging occurred, or the clogging history, including the period of time until a past clogging occurred. If it is determined that no clogging has occurred, the remaining number of cleaning cycles or remaining time until the next clogging occurs is calculated based on the clogging history. A cleaning device that notifies users of estimated information, including the calculated remaining number of operations or remaining period, from a notification unit.

6. In the cleaning apparatus according to claim 1 or 2, If the control unit determines that no clogging has occurred, it predicts the number of remaining cleaning operations or the remaining period until the next clogging occurs, based on the change in the actual supply amount or the change in the supply amount difference between the set supply amount and the actual supply amount during multiple cleaning operations. A cleaning device that broadcasts predictive information, including the predicted number of remaining operating cycles or remaining operating period, from a notification unit.

7. In the cleaning apparatus according to claim 3, If the control unit determines that no clogging has occurred, it predicts the number of remaining cleaning operations or the remaining period until the next clogging occurs, based on the changes in the actual driving conditions or the difference between the initial driving conditions and the actual driving conditions during multiple cleaning operations. A cleaning device that broadcasts predictive information, including the predicted number of remaining operating cycles or remaining operating period, from a notification unit.

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