JP2016193141A - washing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a washing machine capable of suppressing an amount of water discharged from a washing tank when a water level in the washing tank at the start of a washing operation is a prescribed water level.SOLUTION: A dish washing machine 1 includes a rinsing pump 25 for supplying water to a washing tank, a water level detection switch 10 for detecting that the water accumulated in the washing tank has reached a first water level H1, and an accumulation control unit for controlling the rinsing pump so that the water level in the washing tank at the start of a washing operation is a prescribed water level H2 which is higher than the first water level. The accumulation control unit executes first supply control for controlling the rinsing pump so as to supply water until the water level is detected by a water level detection unit, and second supply control for controlling the rinsing pump so as to supply water for a prescribed time after the water level is detected by the water level detection switch 10 so that the water level in the washing tank at the start of a washing operation is the prescribed water level.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a cleaning machine that cleans an object to be cleaned using water stored in a cleaning tank.

  Conventionally, a washing machine that performs a washing operation using water stored in a washing tank is known. In such a washing machine, a predetermined amount of water (hereinafter referred to as “specified water level”) needs to be stored in the washing tank at the start of the washing operation. For example, Patent Document 1 discloses a washing machine provided with an overflow pipe that discharges water supplied to a specified water level or higher to the outside. According to this cleaning machine, before starting the cleaning operation, the water level in the cleaning tank is set to the specified water level by supplying water to the extent that it is discharged from the overflow pipe.

JP 2009-165578 A

  However, in the above conventional washing machine, the water in the washing tank is set to the specified water level by supplying water to the extent that it is discharged from the overflow pipe, so that water is wasted from the washing tank.

  Accordingly, an object of the present invention is to provide a washing machine capable of suppressing the amount of water discharged from the washing tank when the water level in the washing tank at the start of the washing operation is set to the specified water level. .

  A washing machine of the present invention is a washing machine that performs a washing operation for washing an object to be washed using washing water stored in a washing tank, and is stored in a washing water tank and a water supply unit that supplies water to the washing tank. A water level detection unit that detects that the water level has reached the first water level, a storage control unit that controls the water supply unit so that the water level in the cleaning tank at the start of the cleaning operation is higher than the first water level, The storage control unit includes a first supply control for controlling the water supply unit to supply water until it is detected by the water level detection unit, and supplies water for a specified time after being detected by the water level detection unit. By performing the second supply control for controlling the water supply unit, the water level in the cleaning tank at the start of the cleaning operation is set to the specified water level.

  In the washing machine having this configuration, the water supply unit is controlled to supply water until it is detected by the water level detection unit (first supply control), and then the water supply unit is controlled to supply water for a specified time (second supply). By controlling the water level, the water level in the cleaning tank at the start of the cleaning operation becomes the specified water level. The specified time for supplying water to the cleaning tank in the second supply control is appropriately set so that the specified water level is reached by the supply of water by the second supply control, so that the water is supplied exceeding the specified water level. There is nothing. Therefore, when the water level in the cleaning tank at the start of the cleaning operation is set to the specified water level, the amount of water discharged from the cleaning tank can be suppressed.

  In the cleaning machine of the present invention, the water level detection unit may be arranged so as to be able to detect a safety water level that determines whether or not the cleaning operation can be stopped and / or whether or not a heater that heats water stored in the cleaning tank can be energized. Good.

  In such a washing machine, the water level for preventing the suction of the air of the washing pump that pumps the water in the washing tank to the washing nozzle and for preventing the heater that heats the water stored in the washing tank from being blown. In some cases, a safe water level that determines whether or not to stop the cleaning operation and / or whether or not to energize the heater may be set. And the detection part for detecting this safe water level may be provided. In the washing machine with this configuration, the water level detection unit is arranged so that it can detect that the water stored in the cleaning tank has reached the safe water level, so a new detection unit for detecting the safe water level is installed. There is no need to do.

  In the cleaning machine of the present invention, the cleaning operation includes a cleaning process for cleaning the object to be cleaned using the cleaning water stored in the cleaning tank, and a rinsing for rinsing the object to be cleaned using the rinsing water stored in the hot water storage tank. The storage control unit may supply the same amount of water as the water supplied by performing the rinsing step for a specified time in the second supply control.

  In the washing machine having this configuration, an accurate amount of water can be supplied each time in the second supply control with easy control.

  In the washing machine of the present invention, the drainage unit that discharges the water stored in the washing tank, and until the rinsing process that is performed for a specified time is started after the washing process is finished, until it is not detected by the water level detection unit. A drainage control unit that controls the drainage unit so as to discharge the water stored in the cleaning tank may be further provided.

  In the washing machine having this configuration, the amount of water discharged from the washing tank after the washing step and the amount of water supplied to the washing tank in the rinsing step coincide with each other. The water level will return to the original specified water level. As a result, it is possible to continuously perform the cleaning operation. In addition, since the water in the cleaning tank is replaced in the rinsing step, contamination of the water in the cleaning tank can be suppressed.

  In the cleaning machine of the present invention, the drainage unit may be a pump. In the washing machine having this configuration, it becomes possible to drain to a higher level than the washing tank.

  ADVANTAGE OF THE INVENTION According to this invention, when making the water level in the washing tank at the time of a washing operation start into a regulation water level, the quantity of the water discharged | emitted from a washing tank can be suppressed.

It is a figure which shows schematic structure of the dishwasher which concerns on one Embodiment. It is a functional block diagram which shows the function structure of the dishwasher of FIG. It is a flowchart which shows the operation | movement of the washing | cleaning driving | operation in the tableware washing machine of FIG. It is a figure explaining the detail of operation | movement of the washing | cleaning driving | operation in the tableware washing machine of FIG. It is a figure explaining the detail of operation | movement of the washing | cleaning driving | operation in the tableware washing machine of FIG. It is a figure explaining the detail of operation | movement of the washing | cleaning driving | operation in the tableware washing machine of FIG. It is a figure explaining the detail of operation | movement of the washing | cleaning driving | operation in the tableware washing machine of FIG.

  Hereinafter, a dishwasher (washing machine) according to an embodiment will be described with reference to the drawings. In the description of the drawings, the same elements are denoted by the same reference numerals, and redundant description is omitted. The dimensional ratios in the drawings do not necessarily match.

  The dishwasher 1 shown in FIG. 1 is a so-called door-type dishwasher. The door-type dishwasher includes an undercounter type dishwasher in which a door is provided on the front side of the main body, and a type of dishwasher that opens and closes the door. The dishwasher 1 has a main body case 2 made of stainless steel. The inside of the main body case 2 functions as a cleaning chamber R for storing and cleaning tableware (objects to be cleaned) D. On the left side of the main body case 2 is provided an operation panel 3 for a user to input operation modes and settings).

  The main body case 2 is provided with a door 4 for taking in and out the tableware D in the cleaning room R. A rack rail (not shown) is provided in the cleaning chamber R, and a tableware rack (not shown) on which tableware D is arranged is placed on the rack rail.

  In the upper part of the cleaning chamber R, an upper cleaning nozzle 5 consisting of three arms extending radially and an upper rinsing nozzle 6 consisting of two arms are rotatably arranged. Similarly, in the lower part of the cleaning chamber R, a lower cleaning nozzle 7 composed of three arms extending radially and a lower rinse nozzle 8 composed of two arms are rotatably arranged. Thus, the cleaning water is sprayed from the upper and lower sides to the tableware D arranged in the tableware rack by the upper cleaning nozzle 5 and the lower cleaning nozzle 7 in the cleaning process, and by the upper rinsing nozzle 6 and the lower rinsing nozzle 8 in the rinsing process. Since rinsing water is jetted from above and below, the cleaning and rinsing of the tableware D are performed efficiently.

  A cleaning tank 9 for storing cleaning water is formed below the cleaning chamber R configured as described above. The cleaning tank 9 is provided with a water level detection switch (water level detection unit) 10 for detecting the level of the cleaning water. The water level detection switch 10 is a switch that is turned on when the water level in the cleaning tank 9 is equal to or higher than the first water level (safety water level) H1, and is turned off when the water level is lower than the first water level H1. Examples of the water level detection switch 10 include a float switch and a sensor such as an electrode sensor.

  The water level detection switch 10 is arranged so as to be able to detect the first water level H1 that does not suck air when the cleaning pump 14 is driven. Specifically, the water level detection switch 10 is disposed so as to be able to detect the water level when the amount of rinsing water supplied (for example, 2 L) is removed from the specified water level H2 by performing the rinsing process once. ing. That is, it arrange | positions so that the water level in the washing tank 9 when the water level detection switch 10 turns ON (detection state) may become the 1st water level H1.

  If air is sucked in while the cleaning pump 14 is driven, so-called air biting occurs and cleaning water cannot be jetted from the cleaning nozzles 5 and 7. When the water level detection switch 10 is turned off (undetected state) during operation, the operation of the cleaning pump 14 is stopped and the suction of air by the cleaning pump 14 is prevented. In the present embodiment, the operation stop control by the water level detection switch 10 is not performed during the cleaning operation, but only during the initial hot water supply before the start of the cleaning operation or during the standby after the rinsing process is completed. Yes. That is, before the cleaning operation is started or during standby, the cleaning operation is not started as long as the water level detection switch 10 is OFF.

  A drain pipe 53 extending downward is connected to the bottom surface 9 a of the cleaning tank 9. A drainage pump (drainage part) 52 is provided in the middle of the drainage pipe 53 extending from the bottom surface 9 a of the cleaning tank 9. The drainage pump 52 is driven by control of a microcomputer (hereinafter referred to as “microcomputer”) 60. When the drain pump 52 is driven by the microcomputer 60, the cleaning water stored in the cleaning tank 9 is discharged to the outside through the drain pipe 53.

  A cleaning pump 14 is connected to the side surface of the cleaning tank 9 via a cleaning water suction pipe 13. A pump filter 12 is provided at a portion of the cleaning tank 9 to which the cleaning water suction pipe 13 is attached. A cleaning water discharge pipe 15 is connected to the discharge port of the cleaning pump 14. The cleaning water discharge pipe 15 is branched into a first cleaning water discharge pipe 16 and a second cleaning water discharge pipe 17. The first cleaning water discharge pipe 16 is connected to the upper cleaning nozzle 5. The second cleaning water discharge pipe 17 is connected to the lower cleaning nozzle 7.

  The washing tank 9 is provided with a washing water heater (heater) 11 for heating washing water in order to improve washing ability and sterilization ability.

  The dishwasher 1 has a hot water storage tank 18 in which rinsing water is stored. Rinsing water is supplied to the hot water storage tank 18 from an external water heater (not shown) through a hot water supply pipe 21. The hot water supply pipe 21 is provided with a strainer 19 and a water valve 20. In the hot water storage tank 18, a rinsing water heater 22 for maintaining the rinsing water, which is hot water, at a predetermined temperature, and a water temperature sensor 23 for detecting the temperature of the rinsing water are installed.

  A rinsing pump (water supply unit) 25 is connected to the hot water storage tank 18 via a rinsing water suction pipe 24. A rinsing water discharge pipe 26 is connected to the discharge port of the rinsing pump 25. The rinsing water discharge pipe 26 is branched into a first rinsing water discharge pipe 27 and a second rinsing water discharge pipe 28. The first rinsing water discharge pipe 27 is connected to the upper rinsing nozzle 6. The second rinsing water discharge pipe 28 is connected to the lower rinsing nozzle 8.

  An external detergent supply pump 32 is attached to the dishwasher 1. The detergent supply pump 32 is a bellows pump for supplying the detergent stored in the detergent tank 33 to the cleaning chamber R. The detergent supply pump 32 is connected to a detergent discharge pipe 34 connected to the side wall of the cleaning chamber R, and is connected to the microcomputer 60 through a signal line. The detergent supply pump 32 operates in accordance with a signal output from the microcomputer 60, sucks the detergent in the detergent tank 33 from the connected detergent suction pipe 35, and discharges a predetermined amount of detergent to the detergent discharge pipe 34. The detergent is provided at the tip of the detergent discharge pipe 34 and is discharged into the cleaning room R from a detergent discharge port 36 that connects the cleaning room R and the detergent discharge pipe 34. The detergent discharged into the cleaning chamber R flows into the cleaning tank 9 below the cleaning chamber R and is mixed with cleaning water.

  An external rinsing agent supply pump 37 is attached to the dishwasher 1. The rinse agent supply pump 37 is for supplying the rinse agent stored in the rinse agent tank 38 to the rinse water channel. The rinse agent supply pump 37 is connected to a rinse agent discharge pipe 39 that communicates with the first rinse water discharge pipe 27 and is connected to the microcomputer 60 through a signal line. The rinse agent supply pump 37 operates according to a signal output from the microcomputer 60, sucks the detergent in the rinse agent tank 38 from the connected rinse agent suction pipe 40, and discharges the rinse agent to the rinse agent discharge pipe 39. . The rinse agent is discharged from the rinse agent discharge pipe 39 to the rinse water passage in the rinse water discharge pipe 26 by the rinse agent supply pump 37, and is mixed into the rinse water.

  The dishwasher 1 is provided with an electrical box 60A in which a microcomputer 60 that controls the overall operation of the dishwasher 1 is built. The microcomputer 60 is a computer system or processor mounted on an integrated circuit. The microcomputer 60 is a part that controls various operations in the dishwasher 1, and is connected to each other such as a CPU (Central Processing Unit), a ROM (Read Only Memory), and a RAM (Random Access Memory). As shown in FIG. 2, the microcomputer 60 includes a storage control unit 61, a drainage control unit 62, and a cleaning operation control unit 63 as conceptual parts for executing various control processes in the dishwasher 1. doing. For such a conceptual part, for example, a program stored in the ROM is loaded onto the RAM and executed by the CPU.

  The storage control unit 61 causes the rinsing pump 25 to supply rinsing water so that the water level in the cleaning tank 9 at the start of the cleaning operation becomes a specified water level H2 (for example, 19 L) higher than the first water level H1 (for example, 17 L). Part. The storage control unit 61 controls the rinsing pump 25 so as to supply rinsing water until it is detected by the water level detection switch 10, and after the detection by the water level detection switch 10, the rinsing water is supplied for a specified time ( For example, the water level in the cleaning tank 9 at the start of the cleaning operation is set to the specified water level H2 by performing the second supply control for controlling the rinsing pump 25 so that the rinsing pump 25 is supplied so as to supply the time for one rinsing step. Specifically, the storage control unit 61 performs the second supply control on the same amount of water (for example, 2 L) as that supplied by performing the rinsing process for a specified time (for example, the time required for one rinsing process). Supply in

  The drainage control unit 62 discharges the washing water stored in the washing tank 9 until it is not detected by the water level detection switch 10 after the washing process is finished and before the rinsing process carried out for a specified time is started. This is a part for controlling the drainage pump 52.

  The cleaning operation control unit 63 includes a cleaning process for cleaning the object to be cleaned using the cleaning water stored in the cleaning tank 9, and a rinsing process for rinsing the object to be cleaned using the rinsing water stored in the hot water storage tank 18. , The cleaning pump 14, the rinsing pump 25, the drainage pump 52, the detergent supply pump 32, and the rinsing agent supply are based on various signals input from the operation panel 3 and the water level detection switch 10 described later. The pump 37 is controlled.

  Moreover, in the dishwasher 1, a user operates the operation panel 3, and a driving | operation start, a stop, and various settings are performed. The operation panel 3 includes a setting switch for the user to set the number of times of operation, a display unit for displaying the temperature information of the washing water and the rinsing water and other information, a course switching switch for switching the operation course, and suspension of operation. A pause switch for switching on, an operation switch for switching the power ON and OFF, an input section for various set values for determining the specified water level H2 in the washing tank 9, and a user for notifying the operation state of the dishwasher 1 Various display lamps are provided. The operation panel 3 also has a sound output function for outputting a warning sound and a sound announcement.

  Next, the operation of the cleaning operation in the present embodiment will be described mainly with reference to FIGS. In the dishwasher 1, a cleaning operation is performed in which the cleaning process and the rinsing process of the tableware D are one cycle.

  When the power of the dishwasher 1 is turned on by the user, the dishwasher 1 starts initial hot water supply. The initial hot water supply includes the steps of the first supply control and the second supply control. First, the dishwasher 1 starts the first supply control (step S1). Specifically, a rinsing start signal for executing a rinsing process for one time is sent from the storage control unit 61 and the rinsing pump 25 is started. As a result, as shown in FIG. 4A, the rinsing water stored in the hot water storage tank 18 is pumped to the upper and lower rinsing nozzles 6 and 8 via the first and second rinsing water discharge pipes 27 and 28. Then, each of the rinsing nozzles 6 and 8 is sprayed toward the tableware D. Rinsing water (for example, 2 L of rinsing water) sprayed on the tableware D flows below the cleaning chamber R and is supplied into the cleaning tank 9.

  While the rinsing pump 25 is supplying rinsing water, the storage control unit 61 monitors the presence or absence of a detection signal transmitted to the cleaning operation control unit 63 when the water level detection switch 10 detects water (step S2). ). Here, when the detection signal input from the water level detection switch 10 to the cleaning operation control unit 63 is not confirmed (S2: NO), that is, as shown in FIG. 4B, the water stored in the cleaning tank 9 If the water level does not reach the first water level H1, the storage control unit 61 repeatedly causes the rinsing pump 25 to supply the rinsing water to the cleaning tank 9 described above. On the other hand, when the input of the detection signal from the water level detection switch 10 to the cleaning operation control unit 63 is confirmed (S2: YES), that is, as shown in FIG. 5A, the water level in the cleaning tank 9 is the first. When reaching the water level H1 (see FIG. 1), the dishwasher 1 starts the second supply control (step S3).

  The storage control unit 61 supplies the same amount (for example, 2 L) of rinsing water as the rinsing water supplied to the cleaning tank 9 by executing the rinsing process once after being detected by the water level detection switch 10. The rinse pump 25 is controlled. Specifically, the rinsing pump 25 is started by sending a start signal for executing one rinsing process from the storage control unit 61. As a result, as shown in FIG. 5B, the rinsing water stored in the hot water storage tank 18 is pumped to the upper and lower rinsing nozzles 6 and 8 via the first and second rinsing water discharge pipes 27 and 28. Then, each of the rinsing nozzles 6 and 8 is sprayed toward the tableware D. Rinsing water from the rinsing process for one time sprayed on the tableware D flows below the cleaning chamber R and is supplied into the cleaning tank 9.

  In this way, the storage control unit 61 completes the initial hot water supply by performing the first supply control S1 and the second supply control S3. That is, the water level in the cleaning tank 9 when starting the cleaning operation in step S5 described later becomes the specified water level H2 (see FIG. 1). After completion of the initial hot water supply, the dishwasher 1 waits until the washing start button is pressed or until a door switch that detects that the door 4 is closed is turned on (step S4).

  When the cleaning operation control unit 63 accepts that the water level in the cleaning tank 9 becomes the specified water level H2 and the cleaning start button is pressed or the door switch is turned on (S4: YES), the cleaning water including the detergent The cleaning process for cleaning the tableware D is started (step S5). Specifically, the cleaning operation control unit 63 sends a cleaning start signal to the cleaning pump 14. The cleaning pump 14 that has received the cleaning start signal starts to start. Thereby, as shown in FIG. 6A, the cleaning water stored in the cleaning tank 9 is pumped to the upper and lower cleaning nozzles 5 and 7 through the first and second cleaning water discharge pipes 16 and 17. Then, it is sprayed toward the tableware D from each of the cleaning nozzles 5 and 7.

  The washing water sprayed on the tableware D flows below the washing chamber R and is collected in the washing tank 9. Then, the cleaning pump 14 circulates and supplies the cleaning chamber R again. During this cleaning process, the detergent supply pump 32 is driven, the detergent in the detergent tank 33 is discharged from the detergent discharge port 36 into the cleaning chamber R, and is mixed with the sprayed cleaning water and supplied to the cleaning tank 9. .

  When such a cleaning process is performed for a predetermined time, a cleaning end signal is sent from the cleaning operation control unit 63 and the cleaning pump 14 is stopped (step S6). When the cleaning process is completed, the drainage control unit 62 discharges the cleaning water stored in the cleaning tank 9 until it is no longer detected by the water level detection switch 10 until the next rinsing process is started. Is controlled (step S7). That is, the drainage control unit 62 controls the drainage pump 52 until the water level in the cleaning tank 9 reaches the first water level H1, and discharges the cleaning water from the cleaning tank 9. Thereby, as shown in FIG. 6B, the cleaning water stored in the cleaning tank 9 is gradually discharged from the cleaning tank 9. The drainage control unit 62 monitors the presence or absence of a detection signal transmitted to the cleaning operation control unit 63 when the water level detection switch 10 detects water while the drainage pump 52 is discharging the cleaning water (step S8). ).

  Here, when the input of the detection signal from the water level detection switch 10 to the cleaning operation control unit 63 is confirmed, that is, when the water level detection switch 10 is not OFF (S8: NO), the drain control unit 62 The discharge of the washing water from the washing tank 9 by the drain pump 52 described above is continued. On the other hand, when the input of the detection signal from the water level detection switch 10 to the cleaning operation control unit 63 is not confirmed, that is, when the water level detection switch 10 is turned off (S8: YES), in other words, FIG. ), When the water stored in the washing tank 9 reaches the first water level H1, the dishwasher 1 starts a rinsing process (step S9).

  Specifically, a start signal for executing a rinsing process for one time is sent from the cleaning operation control unit 63, and the rinsing pump 25 is started. As a result, the rinsing water stored in the hot water storage tank 18 is pumped to the upper and lower rinsing nozzles 6 and 8 via the first and second rinsing water discharge pipes 27 and 28 as shown in FIG. Then, each of the rinsing nozzles 6 and 8 is sprayed toward the tableware D. In the rinsing process, the rinse agent is supplied by the rinse agent supply pump 37. The rinsing water for one rinsing process sprayed on the tableware D flows below the cleaning chamber R, is collected in the cleaning tank 9, and is used as cleaning water in the next cleaning process. When such a rinsing process is performed for a predetermined time, a rinsing end signal is sent from the washing operation control unit 63, the rinsing pump 25 is stopped, and the operation of one cycle of the washing operation in the dishwasher 1 is completed (step S10). ).

  In the dishwasher 1, when one cycle of the operation is completed, the process returns to step S4 and waits until the next dish D to be washed is set. When it is accepted that the cleaning start button has been pressed or the door switch is turned on (S4: YES), the cleaning process of the next cycle is started (step S5). On the other hand, a series of operations is terminated when the main power is turned off without accepting that the cleaning start button is pressed and the door switch is turned on (S4: NO).

  Next, the effect of the dishwasher 1 of the said embodiment is demonstrated. In the dishwasher 1 of the above embodiment, after performing the first supply control for supplying the cleaning water until it is detected by the water level detection switch 10, the second supply control for supplying the cleaning water until the specified time elapses is performed. Thus, the water level in the cleaning tank 9 at the start of the cleaning operation is set to the specified water level H2. The specified time during which the cleaning water is supplied to the cleaning tank 9 in the second supply control is appropriately set so as to become the specified water level H2 by the supply of the cleaning water by the second supply control (in this embodiment, one rinsing process) Therefore, the cleaning water is not supplied beyond the specified water level H2. Therefore, when the water level in the cleaning tank 9 at the start of the cleaning operation is set to the specified water level H2, the amount of cleaning water discharged from the cleaning tank 9 can be suppressed.

  In the dishwasher 1 of the said embodiment, after detecting by the water level detection switch 10, the rinse pump 25 is made to supply water for the implementation time for one rinse process. The operating time of the rinsing pump 25 when supplying water from the first water level H1 to the specified water level H2 is as short as one rinsing step, so there is a variation in the capacity of the rinsing pump 25 and the frequency (50 Hz / 60 Hz). Even if the processing amount varies due to the difference, the error can be limited. Thereby, the specified water level H2 can be maintained with high accuracy.

  In the dishwasher 1 of the above embodiment, the first water level (safety water level) H1 is higher than the suction port of the cleaning water suction pipe 13 of the cleaning pump 14 connected to the cleaning tank 9 and the position where the cleaning water heater 11 is disposed. Since the water level detection switch 10 is set to the position, the water level detection switch 10 is provided with a detection unit provided to prevent the cleaning pump 14 from sucking air of the cleaning water in the cleaning tank 9 and to prevent the cleaning water heater 11 from being blown. Can also be used.

  In the dishwasher 1 of the said embodiment, since only one point of the 1st water level H1 should be detected, cheap products, such as an electrode or a float switch, can be employ | adopted as the water level detection switch 10. FIG. Moreover, in the dishwasher 1 of the said embodiment, in order to detect the regulation water level H2 and the 1st water level H1, two water level detection parts are provided, or the expensive water level detection part which can detect two or more water levels There is no need to provide (for example, a pressure sensor).

  In the dishwasher 1 of the above embodiment, the storage control unit 61 supplies the same amount of rinsing water as the rinsing water supplied by performing the rinsing process once (specified time) in the second supply control. With an easy control, an accurate amount of water can be supplied each time in the second supply control.

  In the dishwasher 1 of the said embodiment, after the washing | cleaning process is complete | finished, the washing water stored in the washing tank 9 is discharged until it is no longer detected by the water level detection switch 10 until one rinsing process is started. To do. In this control, the amount of washing water discharged from the washing tank 9 after the washing step and the amount of rinsing water supplied to the washing tank 9 in the rinsing step coincide with each other. The water level of 9 returns to the original specified water level H2. Thereby, it becomes possible to carry out the cleaning process continuously. In addition, since the cleaning water in the cleaning tank 9 is replaced in the rinsing process, contamination of the cleaning water in the cleaning tank 9 can be suppressed.

  In addition, the dishwasher 1 is different in the degree of dirt of the object to be washed for each store to be deployed, and it is desirable that the washing operation is performed according to the degree of the dirt. For example, when cleaning tableware D with a high degree of dirt, the amount of water in the cleaning tank is increased and the rinsing time is increased to increase the cleaning capability, and the tableware D with a relatively low level of dirt is cleaned. In some cases, it is desirable to reduce the amount of water used by reducing the replacement of water in the washing tank and shortening the rinsing time.

  In the dishwasher 1 of the above embodiment, the supply amount of the rinsing water, that is, the specified water level H2 can be easily adjusted in the second supply control. For example, when cleaning tableware D having a large degree of dirt, the amount of rinsing water supplied to the cleaning tank 9 is relatively increased in the second supply control. After the cleaning process, before the rinsing process is started, the cleaning water in the cleaning tank 9 is discharged until the water level detection switch 10 is not detected, and the same amount of rinsing water as that supplied in the second supply control is discharged. By simple control that only performs rinsing for a period of time that can be supplied, the amount of washing water in the washing tank 9 can be increased and the rinsing time can be extended. As a result, the cleaning ability can be increased. In addition, when the degree of contamination of the cleaning tank 9 is high, the probability of occurrence of air biting in the cleaning tank 9 increases, so that the amount of rinsing water supplied to the cleaning tank 9 is relatively increased, that is, the specified water level. By increasing H2, occurrence of air biting can be suppressed.

  Further, for example, when cleaning tableware D having a small degree of dirt, the amount of rinsing water supplied to the cleaning tank 9 is relatively reduced (minimized) in the second supply control. After the cleaning process, before the rinsing process is started, the cleaning water in the cleaning tank 9 is discharged until the water level detection switch 10 is not detected, and the same amount of rinsing water as that supplied in the second supply control is discharged. By simple control that only performs rinsing for a period of time that can be supplied, the amount of washing water in the washing tank 9 can be reduced and the rinsing time can be shortened. As a result, the amount of water used can be saved.

  In the dishwasher 1 of the said embodiment, since the washing water stored in the washing tank 9 is discharged | emitted by the drainage pump 52, it becomes possible to drain to a higher level than the washing tank 9. FIG.

  Although one embodiment has been described above, the present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the invention.

<Modification 1>
In the dishwasher 1 of the above embodiment and the modification, as an example of the specified time for supplying the specified time water to the rinsing pump 25 after being detected by the water level detection switch 10, "time required for one rinsing process" is taken as an example. Although described above, the present invention is not limited to this. For example, a time required for two or more rinsing steps may be set as the specified time, or a time unrelated to the rinsing step may be set as the specified time. Moreover, it is good also as a structure which can adjust the said regulation time according to a condition.

<Modification 2>
In the dishwasher 1 of the above embodiment and the modified example, the water level detection switch 10 is an example in which the safe water level that determines whether or not the washing operation can be stopped can be detected, that is, the first water level H1 is at the safe water level. Although the example which is set was demonstrated and demonstrated, it is not limited to this, What is necessary is just to be set to the water level lower than the regulation water level H2.

<Modification 3>
In the dishwasher 1 of the said embodiment and the modification, although the example provided with the drainage pump 52 controlled by the microcomputer 60 was given and demonstrated, it is not limited to this. For example, the drain pump 52 and the like may be omitted, and an overflow pipe may be provided. In this case, the specified water level may be set at the same height as the inlet of the overflow pipe or at a higher position. Even in this case, when the water level in the cleaning tank 9 at the start of the cleaning operation is set to the specified water level H2, the amount of cleaning water discharged from the cleaning tank 9 through the overflow pipe is suppressed. Can do.

<Other variations>
In the tableware washing machine 1 of the above embodiment and the modified example, as an example of controlling the water level before the start of the washing operation, the initial hot water supply when the power switch is turned on has been described as an example. However, the present invention is limited to this. is not. For example, the cleaning water in the cleaning tank 9 may be applied when the cleaning water in the cleaning tank 9 is replaced when the cleaning water in the cleaning tank 9 becomes excessively dirty.

  In the dishwasher 1 of the said embodiment and the modification, although the drainage pump 52 controlled by the microcomputer 60 was mentioned as an example as an example of a drainage part, it is not limited to this. For example, instead of the drainage pump 52, a drainage electromagnetic valve whose valve is opened and closed by the microcomputer 60 may be arranged.

  Although the so-called door-type dishwasher has been described as an example in the above-described embodiment and the dishwasher 1 of the modification, the present invention is a conveyor type that performs washing while transporting a rack for storing the tableware D. It can also be applied to a dishwasher.

  The present invention may be combined as appropriate with the above embodiment and other modifications.

  DESCRIPTION OF SYMBOLS 1 ... Dishwasher (washing machine), 2 ... Main body case, 3 ... Operation panel, 4 ... Door, 9 ... Washing tank, 9a ... Bottom surface, 10 ... Water level detection switch (water level detection part), 11 ... Washing water heater ( Heater), 12 ... Pump filter, 25 ... Rinse pump (water supply unit), 52 ... Drain pump (drainage unit), 53 ... Drain pipe, 60 ... Microcomputer, 61 ... Storage control unit, 62 ... Drain control unit, 63 ... Washing Operation control unit, D ... Tableware (object to be cleaned).

Claims (5)

A cleaning machine that performs a cleaning operation for cleaning an object to be cleaned using cleaning water stored in a cleaning tank,
A water supply unit for supplying water to the washing tank;
A water level detection unit for detecting that the water stored in the washing tank has reached the first water level;
A storage control unit that controls the water supply unit so that the water level in the cleaning tank at the start of the cleaning operation is a specified water level higher than the first water level,
The storage control unit controls the water supply unit to supply water until detected by the water level detection unit, and supplies water for a specified time after being detected by the water level detection unit. And a second supply control for controlling the water supply section to set the water level in the cleaning tank at the start of the cleaning operation as the specified water level.   The said water level detection part is arrange | positioned so that the safety water level which determines the propriety of the stop of the said washing | cleaning driving | operation and / or the energization of the heater which heats the water stored in the said washing tank can be detected. Washing machine. The cleaning operation includes a cleaning process for cleaning an object to be cleaned using cleaning water stored in a cleaning tank, and a rinsing process for rinsing the object to be cleaned using rinsing water stored in a hot water storage tank. And
The said storage control part is a washing machine of Claim 1 or 2 which supplies the same amount of water as the water supplied by implementing the said rinsing process for the said specified time in said 2nd supply control. A drainage section for discharging water stored in the washing tank;
The drainage unit discharges water stored in the cleaning tank until the water level detection unit stops detecting the water level until the rinsing step performed for the specified time is started after the cleaning step is completed. A drainage control unit for controlling
The cleaning machine according to claim 3, further comprising:   The washing machine according to claim 4, wherein the drainage part is a pump.