JP2007209469A - Dishwasher - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a dishwasher capable of determining the order of washing by separately evaluating the filth of washing water before injection of the washing water and the stain on dishes. <P>SOLUTION: The dishwasher comprises a water feeding means for feeding washing water to a washing tub 2, spray nozzles 4 and 4 for spraying the washing water fed to the washing tub 2 toward the dishes, and a turbidity sensor 10 having a light emitting part 11 for emitting light into the washing water and a light receiving part 12 for receiving the light from the light emitting part 11. The dishwasher determines the order of washing based on the quantity of light received by the light receiving part 12 and controls the spray of the washing water in the determined order of washing. The dishes also has a light quantity obtaining means for obtaining a first quantity of light received by the light receiving part 12 when the washing water is fed by the water feeding means and second and third quantities of light received by the light receiving part 12 before and after the spray of the washing water from the spray nozzles 4 and 4 respectively, and a determining means for determining the order of washing based on the first, second and third quantities of light obtained by the light quantity obtaining means. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a dishwasher including a turbidity sensor that detects the degree of contamination of washing water supplied to a washing tank.

  FIG. 13 is a schematic front view of a conventional dishwasher. The dishwasher includes a cleaning tank 2 for storing tableware A inside the housing 1. A plurality of rotatable spray nozzles 4 and 4 for spraying cleaning water are disposed at the bottom of the cleaning tank 2, and a tableware holder 3 on which the tableware A is placed is supported above the spray nozzles 4 and 4. Supported by rails. The dishwasher also includes a cleaning pump 5 that supplies pressurized water to the spray nozzles 4 and 4 via a distribution valve, a heater 6 that heats the cleaning water, and a control device 30.

  One end of a cleaning water circulation path 7 made of a pipe is connected to the spray nozzles 4 and 4, and the other end of the cleaning water circulation path 7 is connected to a drain port 8 provided at the bottom of the cleaning tank 2. The cleaning pump 5 is provided in the middle of the cleaning water circulation path 7 and supplies the cleaning water supplied from the water supply port 9 to the jet nozzles 4 and 4. The spray nozzles 4 and 4 to which the cleaning water is supplied spray the cleaning water. The cleaning water sprayed from the spray nozzles 4 and 4 is supplied again to the spray nozzles 4 and 4 through the drain port 8 and the cleaning water circulation path 7 and circulates in the cleaning tank.

In addition, a turbidity sensor 10 that detects the degree of contamination of the cleaning water is provided between the cleaning pump 5 and the drain port 8 in the cleaning water circulation path 7. The turbidity sensor 10 includes a light emitting unit 11 and a light receiving unit 12 that are arranged to face each other inside the washing water circulation path 7. The light emitting unit 11 emits light into the cleaning water, and the light receiving unit 12 receives the light transmitted through the cleaning water. Since the amount of light received by the light receiving unit 12 changes according to the degree of contamination of the cleaning water, the control device 30 is configured to change the cleaning procedure based on the amount of light (for example, Patent Document 1).
Specifically, it is possible to evaluate the degree of soiling of the tableware A by setting the light amount before jetting the cleaning water as an initial value and comparing the light amount with the light amount after jetting the cleaning water for a certain time. The controller 30 can increase or decrease the cleaning time or the number of times of rinsing according to the degree of dirt on the tableware A.

Further, the dishwasher has a timer reservation function, and is configured to supply cleaning water when a cleaning reservation is received and to start cleaning when the reserved time has elapsed. The wash water supplied at the time of accepting the reservation is used to prevent the stains of the tableware A from drying and sticking between the time of accepting the reservation and the start of cleaning. For example, the cleaning water is heated to generate steam, thereby preventing the stains on the tableware A from drying and sticking.
JP 7-59718 A

However, when the amount of light immediately before jetting the cleaning water is set to the initial value, the cleaning water until the start of cleaning is used even though the cleaning water may become dirty for some reason between the time the reservation is received and the start of cleaning. Since the stains on the tableware are not evaluated, the tableware A may not be sufficiently washed.
Specifically, since the degree of dirt of the washing water for rinsing the tableware A is evaluated low, the number of times of rinsing is reduced, and the tableware A cannot be sufficiently washed. The washing water for rinsing the tableware A is newly supplied after draining the washing water sprayed on the tableware A, but the washing water sprayed on the tableware A is in the washing tank. Therefore, the degree of contamination of the washing water affects the number of times of rinsing.

  In addition, when the amount of light when the cleaning water is supplied is set as an initial value and the amount of light is compared with the amount of light after the cleaning water is jetted, the contamination of the cleaning water before the start of jetting and the tableware A Since dirt is evaluated as a whole, the washing time for the degree of dirt on the tableware A becomes longer, which may increase the washing cost.

  The present invention has been made in view of such circumstances, and the first light amount received by the light receiving unit when the cleaning water is supplied, and the first light amount received by the light receiving unit before and after jetting the cleaning water, respectively. By configuring so as to determine the washing procedure based on the second light quantity and the third light quantity, the dirt of the washing water before the washing water is jetted and the dirt of the tableware can be evaluated, respectively. An object of the present invention is to provide a dishwasher capable of sufficiently washing dishes at a low cost by a washing procedure according to the degree of dirt.

  Another object of the present invention is to determine the cleaning time and the number of times of rinsing the tableware based on the first light amount, the second light amount, and the third light amount. It is an object of the present invention to provide a dishwasher capable of sufficiently washing dishes at a low cost by determining the washing time and the number of times of rinsing according to the conditions.

  Another object of the present invention is to determine the cleaning time based on the ratio of the second light amount and the third light amount, so that the tableware can be obtained at a low cost with the cleaning time corresponding to the degree of contamination of the tableware. The object is to provide a dishwasher that can be thoroughly washed.

  Another object of the present invention is to determine the number of times of rinsing based on the ratio between the first light amount and the third light amount, thereby determining the degree of contamination of the cleaning water before the cleaning water is jetted and the contamination of the dishes. Providing a dishwasher that can be evaluated in a comprehensive manner, determines the number of times of rinsing according to the degree of dirt in the washing water for rinsing the dishes, and can sufficiently wash the dishes at a low cost It is in.

  Another object of the present invention is to obtain the first and third light amounts when the elapsed time from when the cleaning water is supplied to when the cleaning water is jetted is shorter than a predetermined time. By configuring so as to determine the cleaning procedure based on this, when there is no possibility that the cleaning water is contaminated before jetting, the wasteful process of acquiring the second light quantity can be omitted, and the dishes are efficiently cleaned. The purpose is to provide a dishwasher that can be used.

  Another object of the present invention is to receive a cleaning procedure and to change the received cleaning procedure based on the first light amount, the second light amount, and the third light amount. Another object of the present invention is to provide a dishwasher that can be changed according to the degree of washing water and the degree of dirt on the dish.

  In order to achieve the above object, a dishwasher according to the present invention includes a water supply means for supplying cleaning water to a cleaning tank, an injection means for spraying the cleaning water supplied to the cleaning tank to the tableware, and into the cleaning water. A turbidity sensor having a light-emitting unit that emits light and a light-receiving unit that receives light from the light-emitting unit, and determines a cleaning procedure based on the amount of light received by the light-receiving unit. In the dishwasher configured to control the jet of water, the first light amount received by the light receiving unit when the water supply means supplies the wash water, and the jet means before and after jetting the wash water An acquisition unit that acquires the second light amount and the third light amount received by the light receiving unit, and a determination unit that determines a cleaning procedure based on the first light amount, the second light amount, and the third light amount acquired by the acquisition unit. It is characterized by having

  The dishwasher according to the present invention includes a reservation receiving unit that receives a cleaning reservation, and the water supply unit supplies cleaning water when the cleaning reservation is received.

  The dishwasher according to the present invention is characterized in that the determining means determines the cleaning time and the number of times of rinsing the tableware based on the first light amount, the second light amount and the third light amount.

  The dishwasher according to the present invention is characterized in that the determining means determines a cleaning time based on a ratio of the second light amount and the third light amount.

  The dishwasher according to the present invention is characterized in that the determining means determines the number of times of rinsing based on a ratio of the first light amount and the third light amount.

  The dishwasher according to the present invention includes a time measuring unit that counts an elapsed time from when the water supply unit supplies the cleaning water to when the injection unit injects the cleaning water, and the acquisition unit includes a predetermined time unit. When the elapsed time less than the time is counted, the first and third light amounts are acquired, and the determining means includes means for determining a cleaning procedure based on the first light amount and the third light amount. Features.

  The dishwasher according to the present invention includes: a receiving unit that receives a cleaning procedure; and a unit that changes the cleaning procedure received by the receiving unit based on the first light amount, the second light amount, and the third light amount. To do.

In the present invention, the first light amount acquired by the acquisition means indicates the degree of contamination of the cleaning water when the cleaning water is supplied to the cleaning tank, and the second light amount is before jetting the cleaning water. The degree of contamination of the cleaning water is indicated, and the third light quantity indicates the degree of contamination of the cleaning water after jetting the cleaning water. From the first light quantity and the second light quantity, it is possible to evaluate the degree of dirt of the cleaning water generated after the water supply and before the injection is started, and from the second light quantity and the third light quantity, the degree of dirt on the tableware is evaluated. be able to.
Therefore, the determining means can determine the tableware washing procedure according to the degree of contamination of the washing water before spraying and the degree of tableware contamination based on the first light amount, the second light amount, and the third light amount. . Then, the jet of cleaning water is controlled according to the determined cleaning procedure.
The contamination of the cleaning water before jetting the cleaning water becomes a problem when, for example, the reservation receiving unit receives a cleaning reservation, and the water supply unit supplies the cleaning water when receiving the reservation. This is because a considerable time elapses after the water supply until the actual cleaning is started.

  In the present invention, it is possible to evaluate the degree of contamination of the cleaning water before jetting the cleaning water by the first light amount, the second light amount, and the third light amount, and the degree of contamination of the tableware. The cleaning time and the number of times of rinsing can be determined based on the degree of contamination of the washing water and the degree of contamination of the dishes.

  In the present invention, the determining means determines the cleaning time based on the ratio of the second light amount and the third light amount. Since the ratio indicates the degree of soiling of the tableware, the cleaning time required to clean the tableware can be determined.

  In the present invention, the determining means determines the cleaning time based on the ratio of the first light amount and the third light amount. The ratio of the first light amount and the third light amount indicates the degree of dirt of the cleaning water before jetting and the degree of dirt of the tableware. Therefore, the determining means can evaluate the degree of dirt of the washing water after spraying the tableware by summing up the dirt of the washing water and the tableware before jetting, and rinse necessary for washing the tableware. The number of times can be determined.

  In the present invention, when the predetermined time has not elapsed from when the cleaning water is supplied to when the injection of the cleaning water is started, the acquisition unit does not acquire the second light amount, and the determination unit does not acquire the first light amount. The cleaning procedure is determined based on the third light quantity. Since the cleaning water is not contaminated during the predetermined time, the determination unit can determine the cleaning procedure with only the first light amount and the third light amount. Moreover, useless processing for acquiring the second light amount can be omitted.

  In the present invention, the reception unit receives the cleaning procedure, and the dishwasher changes the cleaning procedure received by the reception unit based on the first light amount, the second light amount, and the third light amount. Therefore, the washing procedure can be changed according to the degree of dirt of the washing water before jetting the washing water and the degree of dirt of the tableware.

  In the present invention, it is possible to evaluate the stains of the wash water and the dishes before jetting the wash water, respectively, and the dishes can be obtained at low cost by the washing procedure according to the degree of the stains of the wash water and the dishes. It can be washed thoroughly.

  In the present invention, the cleaning time and the number of times of rinsing can be determined according to the degree of dirt of the cleaning water and tableware, and the tableware can be sufficiently cleaned at low cost.

  In the present invention, it is possible to sufficiently clean the tableware at a low cost with a cleaning time corresponding to the degree of contamination of the tableware.

  In the present invention, it is possible to comprehensively evaluate the degree of dirt of the washing water before the washing water jet and the degree of dirt of the tableware, and according to the degree of dirt of the washing water rinsing the tableware. The number of rinsings can be determined and the dishes can be sufficiently washed at low cost.

  In the present invention, when there is no possibility that the washing water is contaminated before jetting, it is possible to omit a useless process of acquiring the second light amount, and it is possible to efficiently wash the dishes.

  In the present invention, the washing procedure selected by the user can be changed according to the degree of dirt on the washing water and tableware.

(Embodiment 1)
Hereinafter, the present invention will be described in detail with reference to the drawings illustrating embodiments thereof.
1 is a schematic side view of a dishwasher according to Embodiment 1 of the present invention, FIG. 2 is a schematic front view of the dishwasher according to Embodiment 1 of the present invention, and FIG. 3 is Embodiment 1 of the present invention. It is a schematic plan view of the dishwasher concerning.

  The dishwasher is provided with a cleaning tank 2 for storing dishes and a water supply pipe for supplying cleaning water to the cleaning tank 2 inside the housing 1, and the cleaning water is sprayed into the cleaning tank 2 to the dishes. A plurality of rotatable spray nozzles 4 and 4 and a heater 6 for heating the cleaning water supplied to the cleaning tank 2 are disposed. A water supply valve 90 is provided in the water supply pipe. A cleaning pump 5 is disposed between the cleaning tank 2 and the housing 1 to supply pressurized water to the spray nozzles 4 and 4 via a distribution valve (not shown).

  One end of a washing water circulation path 7 disposed on the bottom side of the washing tank 2 is connected to the spray nozzles 4 and 4, and the other end of the washing water circulation path 7 is a drain outlet provided at the bottom of the washing tank 2. 8 is connected. The cleaning pump 5 is provided in the middle of the cleaning water circulation path 7, and the cleaning water supplied from the water supply port 9 is supplied to the injection nozzles 4, 4 so that the cleaning water is injected from the injection nozzles 4, 4. The cleaning water sprayed from the spray nozzles 4 and 4 is supplied again to the spray nozzles 4 and 4 through the drain port 8 and the cleaning water circulation path 7 and circulates in the cleaning tank 2.

  A turbidity sensor 10 that detects the degree of contamination of the cleaning water circulating in the cleaning tank 2 is disposed at the bottom of the cleaning tank 2. The turbidity sensor 10 has a light emitting unit 11 and a light receiving unit 12 arranged to face each other. The light emitting unit 11 emits light into the washing water, and the light receiving unit 12 receives light from the light emitting unit 11 that has passed through the washing water.

  The amount of light received by the light receiving unit 12 of the turbidity sensor 10 is acquired between the cleaning tank 2 and the housing 1, and a cleaning procedure is determined based on the acquired amount of light, and the cleaning procedure is performed according to the determined cleaning procedure. A motor provided in the pump 5, opening and closing of the water supply valve 90, a control device 30 that drives and controls the heater 6 that heats the cleaning water, and a reservation timer (timer means) 37 are arranged.

  Furthermore, an operation panel 15 and a display unit are arranged on the front side of the housing 1. The operation panel 15 has a “start” button for starting dishwashing, a “simple mode” button for selecting a dish washing method, a “standard mode” button, a “slow mode” button, a “timer” button, and the like. ing.

FIG. 4 is a block diagram illustrating a configuration of the control device 30.
The control device 30 includes a CPU (central processing unit) 31, a ROM 32, a RAM 33, a clock 34 for measuring time, an input / output port 35, and the like, which are connected to each other by an internal bus 36. Connected to the input / output port 35 are a turbidity sensor 10, a motor for driving the cleaning pump 5, a heater 6 for heating the cleaning water, an operation panel 15 and the like.

  The CPU 31 of the control device 30 controls dish washing by executing a program stored in the ROM 32 using the RAM 33 as a working area. The CPU 31 of the control device 30 controls driving of the motor, the heater 6 and the like based on the amount of light received by the light receiving unit 12, that is, the degree of dirt on the cleaning water and tableware.

  5 to 7 are flowcharts showing the processing procedure of the control device 30 related to the cleaning of tableware.

  When the “timer” button is operated, the control device 30 receives the cleaning procedure and the scheduled cleaning start time, that is, the time from the current time until the start of cleaning (step S11). For example, the control device 30 first displays 1 hour as the scheduled cleaning start time on the display unit, and adds 1 hour to the scheduled cleaning start time each time the timer button is operated once. In addition, the control device 30 receives the cleaning procedure by detecting the operation states of the “simple mode” button, the “standard mode” button, and the “slow mode” button. When the “start” button is operated, the control device 30 causes the reservation timer 37 to count the determined scheduled cleaning start time displayed on the display unit. The reservation timer 37 gives a cleaning start signal to the control device 30 when the scheduled cleaning start time is counted.

  Next, the control device 30 opens the water supply valve 90 (step S12). When the water supply valve 90 is opened, the cleaning water is supplied to the cleaning tank 2.

  And the control apparatus 30 detects the water level of the washing water supplied to the washing tank 2, and determines whether the water level of a washing water is more than predetermined level (step S13). When it determines with it being more than a predetermined water level (step S13: YES), the control apparatus 30 closes the water supply valve 90 (step S14). When it determines with it being less than a predetermined water level (step S13: NO), the control apparatus 30 returns a process to step S13.

  When the process of step S14 is completed, the control device 30 acquires and stores the first light quantity L1 received by the light receiving unit 12 (step S15). And the control apparatus 30 starts time-measurement with the clock 34 (step S16).

  Next, the control device 30 determines whether or not a cleaning start signal is input (step S17). When it determines with the washing | cleaning start signal having been input (step S17: YES), the control apparatus 30 performs an operation start process (step S18). When it determines with the washing | cleaning start signal not being input (step S17: NO), the control apparatus 30 returns a process to step S17.

  When the process of step S18 is completed, the control device 30 determines whether or not a predetermined time has elapsed after the water supply (step S19). When it determines with predetermined time having passed (step S19: YES), the control apparatus 30 stirs the washing water in the washing tank 2 by driving the washing pump 5 temporarily. (Step S20).

  Next, the control device 30 acquires and stores the second light amount L2 received by the light receiving unit 12 (step S21). Then, the control device 30 calculates La = L1 / L2 obtained by dividing the first light amount L1 by the second light amount L2, and stores the calculated La (step S22). La indicates the degree of contamination of the cleaning water just before the cleaning water is jetted.

  When the process of step S22 is completed, or when it is determined that the predetermined time has not elapsed after the water supply in step S19 (step S19: NO), the control device 30 drives the cleaning pump 5 (step S23), The cleaning time is started with the clock 34 (step S24).

  Then, the control device 30 determines whether or not a simple cleaning time, for example, 5 minutes has elapsed (step S25). If it is determined that the simple cleaning time has elapsed (step S25: YES), the control device 30 acquires the third light quantity L3 received by the light receiving unit 12 (step S26). When it determines with the simple washing | cleaning time not having passed (step S25: NO), the control apparatus 30 returns a process to step S25.

  When the process of step S26 is completed, the control device 30 determines whether or not the second light quantity L2 is stored (step S27). When it is determined that the second light quantity L2 is stored (step S27: YES), the control device 30 calculates Lb = L2 / L3 obtained by dividing the second light quantity L2 by the third light quantity L3 (step S28). Further, the control device 30 calculates Lc = La × Lb obtained by multiplying La and Lb (step S29). Lb indicates the degree of contamination of the tableware, and Lc indicates the degree of contamination of the cleaning water after the cleaning water is sprayed on the tableware. That is, Lc indicates the degree of contamination of the washing water before rinsing the tableware.

When it is determined that the second light quantity L2 is not stored (step S27: NO), the control device 30 calculates Lb = L1 / L3 obtained by dividing the first light quantity L1 by the third light quantity L3 (step S30). Lc = Lb is calculated (step S31).
In step S30 and step S31, if the predetermined time has not elapsed after the water supply, the degree of dirt on the washing water at the time of water supply is approximately the same as the degree of dirt on the washing water immediately before jetting. Lb and Lc are evaluated using the first light quantity L1 instead of L2.

  When the process of step S29 or step S31 is completed, the control device 30 calls a subroutine related to the determination of the cleaning time (step S32).

FIG. 8 is a flowchart showing a processing procedure of a subroutine related to determination of the cleaning time.
When the subroutine related to the determination of the cleaning time is called, the control device 30 determines whether or not Lb is larger than 5 (step S61). When it is determined that Lb is 5 or less (step S61: NO), the control device 30 sets the determined cleaning time to 5 minutes (step S62), and ends the subroutine processing.

  When it determines with Lb being larger than 5 (step S61: YES), the control apparatus 30 determines whether Lb is larger than 10 (step S63). If it is determined that Lb is 10 or less (step S63: NO), the control device 30 sets the determined cleaning time to 10 minutes (step S64), and ends the subroutine processing.

  If it is determined that Lb is greater than 10 (step S63: YES), the control device 30 sets the determined cleaning time to 15 minutes (step S65) and ends the subroutine processing.

FIG. 9 is a chart showing the correspondence between the value of Lb and the determined cleaning time.
According to the subroutine relating to the determination of the cleaning time, the cleaning time is determined in accordance with the size of Lb, that is, the degree of tableware contamination.
Specifically, when Lb is greater than 0 and 5 or less, the determined cleaning time is 5 minutes, when Lb is greater than 5 and 10 or less, the determined cleaning time is 10 minutes, and when Lb is greater than 10, the determined cleaning time The time is set to 15 minutes.

  As shown in FIG. 6, when the process of step S32 is completed, the control device 30 calls a subroutine related to determination of the number of times of rinsing (step S33).

FIG. 10 is a flowchart showing a processing procedure of a subroutine relating to determination of the number of times of rinsing.
When the subroutine relating to the determination of the number of times of rinsing is called, the control device 30 determines whether or not Lc is larger than 6 (step S71). If it is determined that Lc is 6 or less (step S71: NO), control device 30 sets the determined number of rinsings to 3 (step S72), and ends the subroutine processing.

  When it determines with Lc being larger than 6 (step S71: YES), the control apparatus 30 determines whether Lc is larger than 12 (step S73). If it is determined that Lc is 12 or less (step S73: NO), control device 30 sets the determined number of rinsings to 4 (step S74), and ends the subroutine processing.

  If it is determined that Lc is greater than 12 (step S73: YES), control device 30 sets the determined number of rinses to 5 (step S75), and ends the subroutine processing.

FIG. 11 is a chart showing a correspondence relationship between the value of Lc and the number of determined rinsings.
According to the subroutine relating to the determination of the number of times of rinsing, the number of times of rinsing is determined according to the size of Lc, that is, the degree of contamination of the cleaning water.
Specifically, when Lc is greater than 0 and less than or equal to 6, the determined number of rinses is 3, and when Lc is greater than 6 and less than or equal to 12, the determined number of rinses is 4, and when Lc is greater than 12, the determined rinse The number of times is set to 5 times.

  As shown in FIGS. 6 and 7, when the process of step S33 is completed, the control device 30 determines whether or not the determined cleaning time has elapsed (step S34). When it is determined that the determined cleaning time has elapsed (step S34: YES), the control device 30 stops the cleaning pump 5 (step S35). If it is determined that the determined cleaning time has not elapsed (step S34: NO), the control device 30 returns the process to step S34.

  When the process of step S35 is completed, the control device 30 drains the cleaning water (step S36). Then, the control device 30 sets 1 as the number of times of rinsing N (step S37), and executes the rinsing process (step S38).

  Next, the control device 30 determines whether or not the rinsing frequency N is equal to or greater than the determined rinsing frequency (step S39). When it is determined that the number N of rinses is less than the determined number of rinses (step S39: NO), the control device 30 adds 1 to the number of rinses N (step S40), and returns the process to step S38.

  When it is determined that the number of rinsings N is equal to or greater than the determined number of rinsings (step S39: YES), the control device 30 executes a drying process (step S41) and ends the process related to the cleaning.

  In the dishwasher configured in this manner, the stain of the wash water and the stain of the tableware before jetting the wash water can be evaluated, respectively, and the washing time and the number of times of rinsing according to the degree of the stain of the wash water and the tableware The tableware can be sufficiently washed at a low cost with the determined washing time and number of times of rinsing.

  Moreover, when there is no possibility that the washing water is contaminated before jetting, it is possible to omit a useless process of acquiring the second light quantity, and it is possible to wash the dishes efficiently.

  Furthermore, the cleaning procedure selected by the user can be changed according to the degree of contamination of the cleaning water and tableware.

  Further, the cleaning time is determined by comparing Lb with the threshold values 5 and 10, but the threshold value may be another numerical value as long as the tableware can be sufficiently cleaned.

  Furthermore, Lc is compared with threshold values 6 and 12, and the number of times of rinsing is determined. However, if the tableware can be sufficiently rinsed, the threshold value may be other numerical values. good.

  Furthermore, the first light amount, the second light amount, and the third light amount are used to determine the cleaning time and the number of times of rinsing, but the first light amount, the second light amount, and the third light amount are used for cleaning. You may comprise so that the temperature of water, the frequency | count of washing | cleaning, rinsing time, etc. may be determined.

  Furthermore, although it has comprised so that it may select whether to acquire 2nd light quantity according to the elapsed time from the time of water supply, the wash water at the time of water supply, the wash water just before injecting wash water, In the case where there is a possibility that the degree of contamination may change when comparing the above, for example, when the mist process and the pre-cleaning process are performed before the start of the main cleaning, the second light quantity may be acquired.

  Furthermore, the case where cleaning water is jetted from two spray nozzles has been described. However, when cleaning water is jetted from one jet nozzle, the present invention is applied to the case where jet of cleaning water is alternately jetted from each jet nozzle. Also good.

(Embodiment 2)
FIG. 12 is a flowchart showing a processing procedure of a subroutine relating to the determination of the cleaning time in the second embodiment.
Since the dishwasher according to the second embodiment is different from the dishwasher according to the first embodiment only in the processing procedure of the subroutine relating to the determination of the washing time, the difference will be mainly described below.

  When the subroutine relating to the determination of the cleaning time is called, the control device 30 determines whether or not Lb is larger than 5 (step S81). When it is determined that Lb is 5 or less (step S81: NO), the control device 30 determines whether or not the cleaning procedure received in step S11, in particular, the cleaning time is longer than 5 minutes (step S82). When it is determined that the accepted cleaning time is 5 minutes or less (step S82: NO), the control device 30 sets the determined cleaning time to 5 minutes (step S83). When the process of step S83 is completed, or when it is determined that the received cleaning time is longer than 5 minutes (step S82: YES), the control device 30 ends the subroutine process.

  When it determines with Lb being larger than 5 (step S81: YES), the control apparatus 30 determines whether Lb is larger than 10 (step S84). When it determines with Lb being 10 or less (step S84: NO), the control apparatus 30 determines whether the washing | cleaning time received by step S11 is longer than 10 minutes (step S85). When it is determined that the accepted cleaning time is 10 minutes or less (step S85: NO), the control device 30 sets the determined cleaning time to 10 minutes (step S86). When the process of step S86 is completed, or when it is determined that the accepted cleaning time is longer than 10 minutes (step S85: YES), the control device 30 ends the subroutine process.

  If it is determined that Lb is greater than 10 (step S84: YES), the control device 30 sets the determined cleaning time to 15 minutes (step S87), and ends the subroutine processing.

In the dishwasher according to the second embodiment, the cleaning time is changed only when the cleaning time received in step S11 is insufficient with respect to the degree of tableware contamination. That is, even if the washing time received in step S11 is too long for the degree of contamination of the dishes and washing water, the user of the dishwasher may want to wash carefully. In such a case, the cleaning time is not shortened, and the cleaning time is extended only when the cleaning time is insufficient.
Therefore, the cleaning time can be accurately changed according to the user's request.

  Other configurations, operations and effects of the dishwasher according to the second embodiment are the same as the configurations, operations and effects of the dishwasher according to the first embodiment. Detailed description is omitted.

1 is a schematic side view of a dishwasher according to Embodiment 1 of the present invention. It is a schematic front view of the dishwasher according to Embodiment 1 of the present invention. It is a schematic plan view of the dishwasher according to Embodiment 1 of the present invention. It is a block diagram which shows the structure of a control apparatus. It is a flowchart which shows the process sequence of the control apparatus which concerns on washing | cleaning of tableware. It is a flowchart which shows the process sequence of the control apparatus which concerns on washing | cleaning of tableware. It is a flowchart which shows the process sequence of the control apparatus which concerns on washing | cleaning of tableware. It is a flowchart which shows the process sequence of the subroutine which concerns on determination of cleaning time. It is a chart which shows the correspondence of the value of Lb, and the decision washing time. It is a flowchart which shows the process sequence of the subroutine which concerns on determination of the frequency | count of rinsing. It is a chart which shows the correspondence of the value of Lc, and the number of times of decision rinsing. 10 is a flowchart showing a processing procedure of a subroutine relating to determination of a cleaning time in the second embodiment. It is a schematic front view of a conventional dishwasher.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Case 2 Washing tank 4,4 Injection nozzle 5 Washing pump 6 Heater 7 Washing water circulation path 8 Drain port 9 Water supply port 10 Turbidity sensor 11 Light emission part 12 Light reception part 15 Operation panel 30 Control apparatus 31 CPU
32 ROM
33 RAM
34 Clock 35 I / O port 36 Internal bus 37 Timer for reservation 90 Water supply valve

Claims (7)

A water supply means for supplying cleaning water to the cleaning tank, an injection means for injecting the cleaning water supplied to the cleaning tank to the tableware, a light emitting section for emitting light into the cleaning water, and receiving light from the light emitting section In a dishwasher comprising a turbidity sensor having a light receiving part, determining a washing procedure based on the amount of light received by the light receiving part, and controlling the jet of washing water in the determined washing procedure,
The first light amount received by the light receiving unit when the water supply unit supplies cleaning water, and the second light amount and the third light amount received by the light receiving unit before and after the injection unit ejects cleaning water, respectively. Obtaining means for obtaining
A dishwasher comprising: a determining unit that determines a cleaning procedure based on the first light amount, the second light amount, and the third light amount acquired by the acquiring unit. Reservation accepting means for accepting washing reservations,
The water supply means is
The dishwasher according to claim 1, wherein the washing water is supplied when the washing reservation is accepted. The determining means includes
The dishwasher according to claim 1 or 2, wherein the cleaning time and the number of times of rinsing are determined based on the first light amount, the second light amount, and the third light amount. The determining means includes
The dishwasher according to any one of claims 1 to 3, wherein a cleaning time is determined based on a ratio between the second light amount and the third light amount. The determining means includes
The dishwasher according to any one of claims 1 to 4, wherein the number of times of rinsing is determined based on a ratio between the first light quantity and the third light quantity. A time measuring means for measuring an elapsed time from when the water supplying means supplies cleaning water until the spraying means jets cleaning water;
The acquisition means includes
When the time measuring means measures an elapsed time less than a predetermined time, the first and third light quantities are acquired.
The determining means includes
The dishwasher according to any one of claims 1 to 5, further comprising means for determining a washing procedure based on the first light amount and the third light amount. A reception means for receiving a cleaning procedure;
7. The apparatus according to claim 1, further comprising: a unit that changes the cleaning procedure received by the receiving unit based on the first light amount, the second light amount, and the third light amount. dishwasher.

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