KR20060045735A - Dishwasher - Google Patents

Abstract

The present invention relates to a dishwasher, and more particularly, to provide a dishwasher capable of accurately reporting an operation remaining time. The dishwasher may select a driving course from a plurality of driving courses. Then, the previous memory means for storing the driving course and the driving time at the time of the last driving, the driving time storage means for storing the driving time corresponding to the driving course in multiple sequences, the reporting means, the last memory means and the driving time And control means connected to the series memory means and the report means. The control means searches for a plurality of driving times stored in correspondence with the driving course corresponding to the driving time storing memory means based on the driving course stored in the last memory means, and stores the most driving time stored in the previous memory means. A series that stores an approximate driving time is specified, and the remaining time until the end of the current driving operation is reported to the reporting means based on the driving time memorized in correspondence with the currently selected driving course for this specified series.

Dishwasher, Rear Wall, Door, Handle, Lock Lever

Description

Dishwasher {Dishwasher}

1 is a perspective view of a dishwasher according to a first embodiment.

2 is a perspective view of a washing tank withdrawn from the main body of the dishwasher according to the first embodiment.

3 is a schematic side view of the dish washer according to the first embodiment.

4 is an explanatory view of an operation panel of the dish washing machine according to the first embodiment.

5 is a flowchart of the washing / rinsing / drying process according to the first embodiment.

Fig. 6 is a flowchart of the washing process according to the first embodiment (full part).

7 is a flowchart of the washing process according to the first embodiment (second half).

8 is a flowchart of a rinsing process according to the first embodiment.

9 is a flowchart of the hot water rinsing treatment according to the first embodiment (total portion).

10 is a flowchart of the hot water rinsing treatment according to the first embodiment (second half).

11 is a flowchart of a drying process according to the first embodiment.

12 is a flowchart of the operation remaining time display process according to the first embodiment.

13 is a time schedule for each course according to the first embodiment.

14 is a table of conversion of remaining time according to the first embodiment.

15 is a flowchart of the washing process according to the second embodiment (shear portion).

Fig. 16 is a flowchart of the washing process according to the second embodiment (intermediate part).

Fig. 17 is a flowchart of foam response processing according to the second embodiment.

18 is a flowchart of the washing process according to the second embodiment (rear end).

19 is a flowchart of the operation remaining time display processing according to the second embodiment.

** Description of the symbols for the main parts of the drawings **

10 dishwasher 12 body

12a: rear wall 14: door

15 handle 16 lock lever

17: tableware 18: operation panel

20: power button 21: start button

22: high temperature rinse button 23: coslamp unit

23a: Standard Lamp 23b: Rapid Lamp

23c: qualitative lamp 23d: fine lamp

23e: drying lamp 24: drying button

25: Reserve button 26: Reserve lamp

27: time display section 28: course button

29: remaining time lamp 30: washing tank

30a: rear wall 30b: bottom

30c: front wall 31: rotating nozzle

31a: blowing hole 32: dust filter

32a: Handle 33: Heater cover

34: dish basket 35: heater

36: suction suction portion 37: suction flow path

38: washing pump 38a: impeller

38b: motor 38c: inlet

38d: discharge port 39: discharge flow path

40: first drain flow path 41: controller

42: drain pump 42a: impeller

42b: Motor 42c: Inlet

42d: discharge port 43: cleaning tank thermistor

44: second drain flow path 44a: air discharge unit

44b: trap part 44c: hose part

46: external drain flow path 50: drain backflow check valve

51: water supply valve 51a: solenoid

51b: float 51c: exit

51d: Inlet 52: Second water supply passage

53: external water supply passage 54: first water supply passage

56: water level detector 56a: water level chamber

56b: Float 56c: Bar

56d: switch 58: water level flow path

60: drying fan 60a: motor

60b: fan 61: drying path

61a: once 61b: the other end

63: seal cover 65: small dish basket

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dishwasher, and more particularly, to a technology for reporting an operation remaining time until the end of operation of the dishwasher.

The dishwasher washes the dishes by spraying hot water (washing water) onto the dishes and washing the food by spraying hot water on the dishes. A plurality of driving courses having different washing times and / or rinsing times with hot water are used. Among them, dishwashers in which a driving course is selectable are known, and when a qualitative course is selected, the washing time and / or Alternatively, a long rinsing time with hot water is executed, and if the rapid course is selected, the washing time with hot water and / or the rinsing time with hot water are shortened. The operation time of the dishwasher takes a relatively long time, the user may want to know the operation remaining time until the end of the operation.

The operation time of the dishwasher is changed by changes in external factors such as water temperature and water pressure, and even when the same operation course is selected, the operation time changes when external factors such as water temperature and water pressure change. By selecting the operating course, the washing time by hot water and / or the rinsing time by hot water is determined, but prior to this, the water pressure affects the water supply process that is required, and the water temperature affects the heating process.

Detergents other than dishwashing detergent may be wrongly put into the washing tank. When detergents other than exclusive detergent are added, a large amount of foam is generated in the washing tank. When a large amount of foam is generated, the washing water is reduced, the washing pump sucks air, and the washing efficiency is significantly reduced. Therefore, if more than a predetermined amount of foam is generated during dish washing, the dish washing is stopped to perform the defoaming process by operating the drainage in the washing tank and the water supply to the washing tank a plurality of times.

Patent Document 1 (Patent No. 3094462) describes a technique for detecting the tap water temperature supplied to a washing tank, estimating the operating time from the detected tap water temperature, and reporting the operation remaining time based on the calculated result. have.

In the operation time of the dishwasher, external factors such as water temperature, water pressure, and temperature influence each other, and it is difficult to accurately calculate the operation time only by the water supply temperature.

The dishwasher is usually operated frequently or several times a day. If the dishwasher is operated frequently, this operation interval is short, so that external factors such as water temperature and water pressure or temperature are almost unchanged during the last time and this time. Therefore, if the operation time at the previous operation is memorized, the operation time at this time can be notified correctly and the correct operation remaining time can be displayed.

The logic that the operation time in the previous operation is the same as the operation time in the current operation is more reliable than estimating the operation time at the water supply temperature, so it is used only when the operation course in the previous operation is the same as the operation course in the current operation. Can be.

The same dishwasher is often used in the same driving course. For example, a family using a standard course tends to drive only the standard course for a fairly long time. In addition, when the qualitative course is selected after a long time due to the high degree of contamination, the last qualitative course may have been performed more than three months ago. In this case, the external factors such as water temperature, water pressure, and air temperature will change in the meantime, and the operation time of the qualitative course executed more than three months ago and the operation time of the qualitative course executed this time are expected to change considerably. Therefore, the technique of estimating the driving time of the current driving time from the driving time of the previous driving of the same driving course and the reliability of the driving time of the driving course executed in a short time are high when the same driving course is frequently used. Falls.

Defoaming is done by stopping dish washing. In other words, when defoaming is performed, the operation time is longer than usual. Therefore, when the defoaming processing is performed in the previous operation, the accuracy decreases even when the operation time is estimated using the operation time in the previous operation.

The present invention has been devised to solve such a problem, and adopts a method of estimating the operation time of the current operation from the operation time of the previous operation, and even if a separate driving course is executed in a short time, the accurate operation time can be estimated. Even if the driving course is changed, it is possible to estimate the current driving time by the last driving time and to estimate the accurate driving time by using the driving time just before the external factors such as water temperature, water pressure and air pressure change. It is also an object of the present invention to provide a dishwasher capable of accurately estimating the operation time even if the defoaming is performed.

The dishwasher of the present invention for achieving the above object includes a step of washing the dishes by spraying hot water to the tableware, and a step of rinsing the dishes by spraying hot water on the tableware, and washing time with hot water and / Alternatively, the driving course may be selected from a plurality of driving courses having different rinsing times with hot water. The dishwasher according to the present invention includes a previous memory means for storing a driving course and a driving time at the time of last driving, a driving time memory storing means for storing a plurality of driving times corresponding to the driving course, a reporting means, and a previous time. Storage means, operation time sequence storage means, and control means connected to the reporting means. The control means searches for a plurality of driving times stored in the driving time sequence storage means corresponding to the driving course based on the driving course stored in the previous memory means, and is closest to the driving time stored in the previous memory means. A series that stores the driving time is specified, and the remaining time until the end of the current driving is reported to the reporting means based on the driving time memorized in correspondence with the currently selected driving course for the specified series.

The driving time series storage means of the dishwasher stores a plurality of series of driving times corresponding to the driving course. The operating time of each series is for the same water temperature, water pressure and air pressure. The control means searches for a plurality of driving times stored in correspondence with the driving course in the driving time storing memory means based on the driving course stored in the previous memory means, and is closest to the driving time stored in the previous memory means. A series that stores the driving time is specified, and the remaining time until the end of the current driving is reported to the reporting means based on the driving time stored in correspondence with the driving course selected this time for the specified series. In this way, external factors such as water temperature can accurately estimate and report the remaining time until the end of operation by using the previous operation time which is almost unchanged from this time.

The dishwasher includes a plurality of operations in which a hot water is sprayed into the dishes to wash the dishes, and a hot water is sprayed into the dishes to rinse the dishes, and the washing time with the hot water and / or the rinsing time with the hot water are different. You can choose a driving course from the course. The dishwasher of the present invention includes a previous memory means for storing the driving course and the driving time of the previous driving, a means for calculating the driving time of another driving course from the driving time of an arbitrary driving course, a reporting means, and a previous memory. Means and control means connected to the operation time calculation means and the reporting means. The driving time calculating means calculates the driving course and driving time memorized by the last memory means and the driving time of the driving course selected this time in the driving course selected this time. The control means reports to the reporting means the remaining time until the end of the current operation based on the operation time calculated by the operation time calculation means.

The driving time storage means of the dishwasher calculates the driving time of another driving course from the driving time of any driving course. In this case, the driving time of an arbitrary driving course and the driving time of another driving course are those under the same conditions of water temperature and water pressure. The driving time storage means calculates the driving course and driving time memorized by the last memory means, and the driving time of the driving course selected this time in the currently selected driving course. The control means reports to the reporting means the remaining time until the end of the current operation based on the operation time calculated by the operation time calculation means. In this way, the remaining time until the end of the operation can be accurately reported by using the last operation time such that external factors such as water temperature are almost unchanged.

Another dishwasher according to the present invention executes the defoaming operation by stopping the washing operation when a predetermined amount or more of foam is generated during the washing operation by spraying the washing water onto the dish. The dishwasher includes a previous driving memory means for storing the operation time and the presence or absence of the parcel operation during the last driving, a previous driving memory means for storing the previous operation time, a reporting means, and a previous time. And a control means connected to the driving memory means and the previous driving memory means and the reporting means. If the parcel operation is not stored in the last driving memory means, the control means reports the remaining time until the end of the current operation to the reporting means based on the operating time stored in the last driving memory means, and at the same time. If the parcel operation is memorized, the remaining time until the end of the current operation is reported to the reporting means based on the operation time stored in the previous previous driving memory means.

If the parcel operation is carried out during the previous operation, the operation time during the previous operation becomes long for this reason, and thus it is impossible to estimate the current operation time based on the operation time. The control means of the dishwasher described above reports to the reporting means the remaining time until the end of the current operation based on the operation time stored in the previous previous driving memory means when the parcel operation is stored in the previous driving memory means. . Therefore, the remaining time until the end of operation can be reported accurately.

In the above dishwasher, the last previous driving operation means stores the previous operation time and the existence of the parcel operation during the previous previous operation, and the control means performs the parcel operation when the parcel operation is stored in the previous driving memory means. It is preferable to search retroactively the previous driving memory means up to the time of the operation not memorized, and to report to the reporting means the remaining time until the end of this operation based on the searched driving time.

According to this dishwasher, the remaining time until the end of this operation is reported based on the operation time when the parcel operation is not performed. Therefore, the remaining time until the end of operation can be reported accurately.

In the above dishwasher, the last previous driving memory means stores the operation time at the last previous operation, and the control means is stored in the previous previous driving memory means when the parcel operation is stored in the last driving memory means. It is preferable to report to the reporting means the remaining time until the end of the current operation based on the present operating time.

Parcel operation is often performed when a detergent other than a dedicated detergent is incorrectly put into a washing tank. Therefore, it is unlikely that defoaming operation will be performed continuously. In the above dishwasher, when the parcel operation is performed during the previous operation, the remaining time until the end of the current operation is reported based on the operation time during the previous operation. Therefore, the remaining time until the end of operation can be reported accurately.

It is possible to memorize the operation time of 3 rotations and 4 rotations instead of the all-round rotation in order to deviate from the right range. It is a technology and a technical idea is the same as that of this invention, and is included in a scope of right.

It describes as main characteristics of the below-mentioned Example.

(First embodiment)

(1) The dishwasher 10 performs a series of operations consisting of washing, rinsing, hot water rinsing and drying. The time for performing such a series of driving is divided into a plurality of set courses (standard course, qualitative course, rapid course, etc.).

(2) Tap water is supplied to the washing tank 30 of the dishwasher 10 from the outside. Tap water supplied to the washing tank is used as washing water for washing dishes, rinsing water for performing rinsing and hot water rinsing.

(3) During food washing and hot water rinsing, the washing and rinsing water are heated by a heater to become hot water. At the time of washing of food, after washing | cleaning water temperature becomes 45 degreeC or more, washing | cleaning is complete | finished after the elapse of the temperature of time T1. At the time of hot water rinsing, after the temperature of the rinsing water becomes 70 ° C or more, the hot water rinsing is finished after the hot water rinsing time T3 elapses. The time from when the heating is started by the heater 35 until the washing water reaches 45 ° C. or more and the time until the rinsing water becomes 70 ° C. or more is measured by the tap water (wash water, rinsing water) supplied to the washing tank 30. It changes with temperature fluctuations.

(4) The controller 41 stores the course and the driving time at the time of the previous driving. In addition, the controller 41 stores a timetable for each course. The timetable for each course remembers the courses and the time corresponding to these courses for each series. Then, the controller 41 specifies the sequence by combining the course and the driving time and the timetable for each course stored in the previous driving, and estimates the driving time of the current time using the specified sequence. . The remaining driving time is displayed based on the estimated driving time. If the reference time is set for each course without using the timetable for each course, the current time can be estimated by calculating the time difference and time ratio between the reference time and the previous driving time.

Second Embodiment

Only features that are characteristic of the second embodiment will be described.

(1) The controller 41 displays and stores the water supply time "k0" and the water holding time "h0" to the washing tank 30, and the result calculated using the water supply time "k0" and the water holding time "h0". To determine whether the parcel is being operated.

(2) In the case where the parcel driving is performed in the previous driving, the controller 41 combines the course and driving time of the previous driving, not the course and driving time of the previous driving, with the timetable for each course. A series is specified and the current operating time is estimated from this specified series.

EXAMPLE

(First embodiment)

A first embodiment of the dishwasher 10 of the present invention will be described with reference to the drawings.

1 illustrates a dishwasher 10 showing a state in which the door 14 is closed to the main body 12. The door 14 is provided with a handle 15, an operation panel 18, and a lock lever 16. The operation panel 18 is provided with various buttons, lamps and the like. These buttons, lamps and the like will be described later in detail. The door 14 can be locked or released by sliding the lock lever 16 laterally (FIG. 1 shows a state where the lock lever 16 is arranged in the locked position).

When the user grabs the handle 15 and pulls it forward, the washing tub 30 is withdrawn from the main body 12 together with the door 14. 2 shows the dishwasher 10 in a state where the washing tank 30 is drawn out. The main body 12 slidably supports the washing tank 30 through a roller and a rail not shown. The washing tank 30 is formed in a box shape with an open top, and a rotating nozzle 31, a dreg filter 32, a heater cover 33, and the like are mounted therein. That is, although the dish basket 34 which accommodates the tableware 17 is provided in the washing tank 30, the figure was abbreviate | omitted in FIG. 2 (the dish basket 34 is shown in FIG. 3). The rotary nozzle 31 is formed with a plurality of jet holes 31a. The garbage filter 32 is formed in a mesh shape, and is provided in order to filter out the dregs which flowed out of the dishware 17 when the dishware 17 is washed. The dreg filter 32 is provided with a handle 32a. Pulling up the handle (32a) is to separate the filter filter 32 from the washing tank 30 it is possible to discard the filtered debris. The heater cover 33 is in the shape of a snow nose (plate formed with a plurality of gaps at regular intervals), and a heater 35 (to be described later) is attached to the lower portion thereof.

3 shows the configuration of the dishwasher 10. The dish basket 34 is installed in the washing tank 30. The dish basket 34 is a combination of bent wire rods, and is formed in a shape corresponding to these tableware 17 to support different kinds of tableware 17 (tables, plates, cups, rice bowls, etc.). It is. In the dish basket 34, a small dish basket 65 made of resin is placed. This small dish basket 65 accommodates small tableware such as chopsticks and spoons. The suction recess 36 is formed at the bottom of the washing tank 30. The debris filter 32 is mounted to cover the suction recess 36. The washing pump 38 is fixed to the rear wall 30a of the washing tank 30. The washing pump 38 is provided with the motor 38b and the impeller 38a provided in the rotating shaft of this motor 38b. The suction port 38c of the washing pump 38 and the suction recess 36 are connected by a suction flow path 37.

The rotary nozzle 31 is rotatably installed on the bottom surface 30b of the washing tank 30. The rotary nozzle 31 and the discharge port 38d of the washing pump 38 are connected by the discharge passage 39. A part of the jet hole 31a of the rotary nozzle 31 is formed in the position which generate | occur | produces a rotation moment in the rotary nozzle 31 when spraying wash water in each position.

The drain pump 42 is fixed to the rear wall 30a of the washing tank 30. The drain pump 42 is provided with the motor 42b and the impeller 42a provided in the rotating shaft of the motor 42b. The suction port 42c and the suction recess 36 of the drain pump 42 are connected by the first drain passage 40. An external drain passage 46 for draining the outside of the dishwasher 10 is connected to the rear wall 12a of the main body 12. The external drain passage 46 and the discharge port 42d of the drain pump 42 are connected by the second drain passage 44.

An air discharge portion 44a is formed in the middle of the second drain passage 44. The air discharge part 44a is connected to the washing tank 30 by the air discharge path 48. The diameter of the air discharge passage 48 is formed smaller than the diameter of the second drain passage 44. The trap part 44b formed in a U shape is provided in the vicinity of the connection part with the external drain flow path 46 of the 2nd drain flow path 44. As shown in FIG. The diameter of the trap part 44b is formed larger than the diameter of the 2nd drain flow path 44. As shown in FIG. Further, on the downstream side of the trap portion 44b (external drain flow path side), a drain backflow prevention valve 50 is installed to prevent the drainage from flowing back from the external drain flow path 46 toward the second drain flow path 44. have. A deformable hose portion 44c is provided between the air discharge portion 44a and the trap portion 44b of the second drain passage 44. Deformation of the hose portion 44c prevents the second drain passage 44 from interfering with the movement of the washing tub 30 when the washing tub 30 is drawn out or received from the body 12.

The water supply valve 51 is fixed inside the rear wall 12a of the main body 12. The water supply valve 51 has a solenoid 51a and a poppet 51b driven by the solenoid 51a. The poppet 51b is elastically supported by a spring (not shown) in the state where the solenoid 51a is not excited, and closes the inlet 51d of the water supply valve 51. When the solenoid 51a is excited, the poppet 51b opens the inlet 51d.

An external water supply passage 53 for supplying tap water from the outside is connected to the rear wall 12a of the main body 12. Tap water (cold water) may be directly supplied to the external water supply passage 53, or hot water may be supplied from the hot water heater. The external water supply passage 53 and the inlet 51d of the water supply valve 51 are connected by the first water supply passage 54. The outlet 51c of the water supply valve 51 and the washing tank 30 are connected by the second water supply passage 52. The second water supply passage 52 is a deformable hose. Since the second water supply passage 52 is a deformable hose, the second water supply passage 52 may be prevented from interfering with the movement of the washing tank 30.

The water level detector 56 is fixed to the rear wall 30a of the washing tank 30. The water level detector 56 includes a water level chamber 56a, a float 56b disposed in the water level chamber 56a, a bar 56c fixed to the float 56b and protruding upward from the water level chamber 56a, and the bar ( The switch 56d provided in the upper part of 56c) is provided. The water level chamber 56a and the suction recess 36 of the water level detector 56 are connected by the water level passage 58.

The drying fan 60 is attached to the front lower side of the bottom surface 30b of the washing tank 30. The drying fan 60 is equipped with the motor 60a and the fan 60b provided in the rotating shaft of this motor 60a. The drying fan 60 is connected to one end 61a of the drying path 61. The other end 61b of the drying passage 61 is opened to the front wall 30c of the washing tank 30. The drying path 61 is formed in an inverted U-shape and prevents the washing water in the washing tank 30 from leaking to the drying pan 60. When the drying fan 60 is driven, the fan 60b is also rotated by the rotation of the motor 60a. When the fan 60b rotates, external air is sucked into the washing tank 30 via the drying path 61. The air sucked into the washing tank 30 is exhausted to the outside from the exhaust port 62 provided in the door 14.

The washing tub thermistor 43 is mounted on the bottom surface 30b of the washing tub 30. The washing tank thermistor 43 detects the temperature of the washing water when the washing water is introduced into the washing tank 30, and detects the air temperature in the washing tank 30 when the washing water is not introduced.

The controller 41 is mounted in the door 14. The controller 41 includes a CPU, a ROM, a RAM, and the like, and controls the operation of the dishwasher 10 by executing a control program stored in the ROM. The RAM temporarily stores data generated while the CPU executes the control program, data input to the controller 41, and the like. The controller 41 includes a washing pump 38, a drain pump 42, a water supply valve 51, a water level detector 56, a drying fan 60, a heater 35, a washing tank thermistor 43, and an operation panel. (18) is connected.

The seal cover 63 is mounted above the washing tank 30. Seal cover 63 is connected to the washing tank 30 by a lifting mechanism (not shown). In the state in which the washing tank 30 is accommodated in the main body 12, the seal cover 63 descends to cover the upper opening of the washing tank 30. When the washing tank 30 is withdrawn from the body 12, the seal cover 63 is raised to open the upper opening of the washing tank 30.

As shown in FIG. 4, the operation panel 18 includes a power button 20, a start button 21, a high temperature rinse button 22, a coarse button 28, a coarse lamp unit 23, and a drying button 24. The reservation button 25, the reservation lamp 26, the remaining time lamp 29, and the time display part 27 are provided. The course lamp unit 23 includes a standard lamp 23a, a rapid lamp 23b, a qualitative lamp 23c, a sharp lamp 23d, and a drying lamp 23e. The time display unit 27 is a liquid crystal panel and displays two digits of time in seven segments.

When the power button 20 is pressed, the dishwasher 10 is turned on. When the start button 21 is pressed, operation of the dishwasher 10 is started. If the dishwasher 10 presses the start button 21 during operation, the operation is restarted.

Press the course button 28 to select a course. If no course is selected, driving is performed on the same course as the last time. There are five types of courses: standard course, rapid course, qualitative course, fine course and dry course. Each time the course button 28 is pressed, the courses are selected in the above-described order, and the lamp of the course lamp unit 23 corresponding to the selected course is turned on. For example, when the rapid course is selected, the rapid ramp 23b is turned on.

The standard course, rapid course and qualitative course carry out their operations in the order of washing, rinsing, hot water rinsing and drying. Standard course wash time is 12 minutes, rinsing time is 7 minutes, hot water rinsing time is 10 minutes, and drying time is 30 minutes. The rapid course wash time is 7 minutes, rinsing time is 1 minute, hot water rinsing time is 2 minutes, and drying time is 15 minutes. The cleaning time of the qualitative course is 22 minutes, the rinsing time is 10 minutes, the hot water rinsing time is 10 minutes, and the drying time is 45 minutes. That is, as will be described in detail later, in the washing and hot water rinsing, since the washing water is heated by the heater 35, the time by washing and hot water rinsing by the temperature of the tap water (washing water, rinsing water) supplied to the washing tank 30 is greater than the above-mentioned value. It becomes long or short.

Yes course is provided for the purpose of washing a small amount of tableware 17, and only washing is performed for 7 minutes. If you choose a drying course, only drying takes place for 60 minutes.

When the high temperature rinse button 22 is pressed, the temperature of the washing water at the time of performing hot water rinsing in the standard course, rapid course and qualitative course can be increased.

The drying button 24 is provided to change the drying time. When the drying button 24 is pressed, the drying time of the selected course is displayed on the time display unit 27. For example, if a standard course is selected, 30 minutes are displayed. Each time the drying button 24 is pressed, the drying time is changed by 15 minutes and displayed on the time display unit 27. However, the upper limit of the changed drying time is 60 minutes. For example, assume that a standard course is selected and 30 minutes are displayed on the time display unit 27. Pressing the drying button 24 in this state changes the drying time from 40 minutes to 60 minutes to 15 minutes to 30 minutes each time it is pressed. The display of the drying time is turned off 5 seconds after the drying button 24 is pressed.

The reservation button 25 is provided to reserve how long to operate the dish dryer 10 after the start button 21 is pressed. Whenever the reservation button (25) is pressed, there is no reservation-> after 1 hour-> after 2 hours-> after 3 hours-> after 4 hours-> after 5 hours-> after 6 hours-> without reservation It is displayed on the time display unit 27. In the case of no reservation, nothing is displayed on the time display unit 27. In the state where reservation is made, the reservation lamp 26 is lighted.

When the food washer 10 is operating, the time until the end of this operation (operation remaining time) is displayed on the time display unit 27. When the operation remaining time is displayed, the remaining time lamp 29 lights up. The operation remaining time will be described in detail below.

The operation of the dishwasher 10 will be described with reference to flowcharts and the like.

The washing / rinsing / drying process (S10) and operation remaining time display process (S200) to be described later are executed by the controller 41.

As shown in Fig. 5, in the washing / rinsing / drying process (S10), the processes of washing process (S12), rinsing process (S50), hot water rinsing process (S80), and drying process (S130) are executed in order.

As shown in FIG. 6, in S14 which is the initial process of washing process S12, it determines whether the power button 20 of the operation panel 18 is ON. The power button 20 is repeatedly turned on and off each time it is pressed. If it is determined in step S14 that the power button 20 is not ON (NO), the process waits as it is. If it is determined in S14 that the power button 20 is on (YES), then S16 is moved.

In S16, it is determined whether the start button 21 has been pressed. If it is determined in S16 that the start button 21 has not been pressed (NO), the process waits as it is. If it is determined in S16 that the start button 21 has been pressed (YES), then S18 is executed.

When S18 is executed, the water supply valve 51 is opened. When the water supply valve 51 is opened, tap water is supplied from the external water supply passage 53 to the washing tank 30 via the first water supply passage 54 and the second water supply passage 52. When tap water is supplied to the washing tank 30, it is stored in the washing tank 30 as washing water, and the level of the washing water rises. The washing water flows into the water level chamber 56a of the water level detector 56 through the suction recess 36 and the water level path 58. At the same time as the level of the washing water rises, the level in the water level chamber 56a also rises. When the water level of the water level chamber 56a rises, the float 56b will rise and the bar 56c will rise with it. When the bar 56c is raised and its upper end pushes up the switch 56d, the water level detector 56 is turned on. When the water level detector 56 is turned on, the level of the washing tank 30 is slightly higher than that of the heater 35 completely submerged in the washing water.

Subsequent to S18, in S20, it is determined whether the water level detector 56 is on. If it is determined in S20 that the water level detector 56 is not ON (NO), it waits as it is. If it is determined in S20 that the water level detector 56 is on (YES), S22 is executed.

When S22 is executed, the water supply valve 51 is closed. Subsequently, as S24 is performed, the washing pump 38 is driven. When the washing pump 38 is driven, the impeller 38a is also rotated in accordance with the rotation of the motor 38b. When the impeller 38a is rotated, the washing pump 38 sucks the washing water in the washing tank 30 via the suction recess 36 and the suction passage 37. The washing pump 38 discharges the sucked washing water into the discharge passage 39. The washing water 39 is sent from the discharge passage 39 to the rotary nozzle 31 and jetted from the jet hole 31a. The washing water jetted from the jet hole 31a washes the dishes 17. The washing water having washed the dishes 17 is sucked back into the washing pump 38 via the suction recess 36 and the suction passage 37. Thus, the washing water sucked by the suction recess 36 is ejected from the ejection hole 31a of the rotary nozzle 31, and the dish 17 is washed while the suction sucked into the suction recess 36 is repeated. The debris washed in the tableware 17 is filtered out of the debris filter 32. That is, before starting the operation of the dishwasher 10, the detergent is introduced into a predetermined portion (not shown) of the dish basket 34 by the user. When the dishes 17 are washed, the detergent is mixed with the washing water, and the washing is performed efficiently.

S26 is executed after S24. The heater 35 is turned on when S26 is executed. The turned-on heater 35 generates heat, thereby raising the temperature of the washing water.

In S28, it is determined whether the temperature of the washing water detected by the washing tank thermistor 43 is 45 deg. If it is determined in S28 that the temperature of the washing water is not 45 ° C. or more (in the case of N0), the process waits as it is. If it is determined in S28 that the temperature of the washing water is 45 ° C. or higher (YES), the flow moves to S30.

In S30, the temperature adjustment time T1 corresponding to the course is set (hereinafter, the "temperature adjustment time" is referred to as "temperature bath time"). The temperature range T1 means the time during which the temperature of the washing water is adjusted during washing. Temperature adjustment of the washing water will be described later in detail. When the standard course is selected, the temperature range T1 is set to 9 minutes 30 seconds. If the qualitative course is selected, the temperature range T1 is set to 19 minutes 30 seconds. If the rapid course is selected, the temperature range T1 is set to 4 minutes.

As shown in Fig. 7, in step S32 subsequent to step S30, it is determined whether or not the temperature adjustment time T1 has elapsed. If it is determined in S32 that the temperature of the warming time T1 has not elapsed (NO), the process moves to S34.

In S34, it is determined whether the temperature of the washing water is 60 ° C or more. If it is determined in S34 that the temperature of the washing water is 60 ° C. or more (YES), the flow moves to S36 to turn off the heater 35. Then, execute S32 again. If it is determined in S34 that the temperature of the washing water is not more than 60 ° C (in the case of NO), S38 is performed.

In S38 it is determined whether the wash water temperature is less than 55 ℃. If it is determined in S38 that the wash water temperature is less than 55 ° C (YES), the heater 35 is turned on by executing S40. After executing S40, perform S32 again. By performing the processing of S34 to S40, the washing water temperature is maintained (adjusted) between 55 ° C and 60 ° C.

On the other hand, in the case where it is determined in S32 that the heating temperature T1 has elapsed (YES), the flow is switched to S42 to turn off the heater 35. In S44 executed next to S42, the washing pump 38 is stopped.

Subsequently, in S46, the drain pump 42 is driven for 40 seconds. When the drain pump 42 is driven, the impeller 42a is rotated by the rotation of the motor 42b. When the impeller 42a rotates, the drain pump 42 sucks the washing water from the suction recess 36 through the first drain passage 40. The drain pump 42 discharges the sucked washing water into the second drain passage 44. The washing water discharged to the second drain passage 44 is discharged to the outside from the external drain passage 46.

The driving time of the drain pump 42 in S46 is set to a time sufficient to completely drain the washing water in the washing tank 30. When the washing water is completely drained from the washing tank 30, the impeller 42a of the drain pump 42 sucks air. At the time when the impeller 42a inhales air, the wash water still remains in the second drain passage 44. Therefore, the drainage water is stored in the trap portion 44b formed in a U shape. When the drainage is stored in the trap 44b, it is possible to prevent an unpleasant odor from flowing into the washing tank 30 from the external drainage passage 46.

In addition, when the drain pump 42 is stopped, air flows from the washing tank 30 to the air discharge portion 44a through the air discharge path 48. When air flows into the air discharge portion 44a, the second drain passage 44 does not function as a siphon. Therefore, even if the water level of the external drainage channel 46 is higher than the level of the washing tank 30, it is possible to prevent the backflow of the drainage from the external drainage passage 46 to the second drainage passage 44.

After performing S46, the flow returns to the washing / rinsing / drying process S10.

In the above-described washing treatment S12, the washing pump 38 is driven (S24), the heater 35 is turned on (S26), and when the water temperature T1 elapses after the washing water temperature reaches 45 ° C or higher (S32), the heater ( 35) is turned off (S42) and at the same time the washing pump is stopped (S44) to end the washing. Until the temperature of the bath temperature T1 elapses, the washing water temperature rises more than 45 ° C. to maintain the temperature between 55 ° C. and 60 ° C. (S34 to S40). Washing the dishes 17 with hot washing water may be better to remove the contaminants than washing with the cold washing water. Therefore, the washing is surely performed by setting the temperature of the bath T1 as the time from when the washing water becomes a high temperature (45 ° C or more and 55 ° C to 60 ° C) until the washing is completed.

The temperature of the washing water (tap water) supplied to the washing tank 30 varies with the season. In addition, a hot water heater is connected to the external water supply passage 53 so that hot water is supplied to the washing tank 30. Therefore, the time from when the heater 35 is turned on until the washing water temperature reaches 45 ° C. or more is changed. For example, because of the low temperature of the tap water in winter, it takes a long time until the wash water temperature reaches 45 ° C or higher. In summer, since the temperature of tap water is high, the time until the washing water temperature reaches 45 ° C. or more is short. Therefore, the time from when the washing pump 38 is driven to stopping is not constant.

As shown in the washing / rinsing / drying process S10 of FIG. 5, the rinsing process S50 is performed subsequent to the washing process S12. As shown in FIG. 8, in S52 of rinse process S50, the rinse frequency N corresponding to a course is set. If the standard course is selected, the number of rinsing cycles (N) is set to four. If the rapid course is selected, the rinse cycle N is set once.

When S54 is followed by S52, the value of "n" becomes zero. Then, in s56 executed next, "n = n + 1" is calculated.

In S58, the rinsing time T2 corresponding to the course is set. When the standard course or the qualitative course is selected, one minute is set as the rinsing time T2. If the rapid course is selected, 30 seconds is set as the rinsing time T2.

When the next S60 of S58 is executed, the water supply valve 51 is opened. When the water supply valve 51 is opened, tap water (rinsing water) is supplied to the washing tank 30 via the external water supply passage 53, the first water supply passage 54, and the second water supply passage 52. In S62, it is determined whether the water level detector 56 is on. If it is determined in S62 that the water level detector 56 is not on (NO), it waits as it is. If it is determined in S62 that the water level detector 56 is on (YES), S64 is executed.

When S64 is executed, the water supply valve 51 is closed. When the next S66 of S64 is performed, the washing pump 38 is driven. When the washing pump 38 is driven, rinsing water is ejected from the nozzle 31 and rinsing of the dish 17 is performed. In S68, it is determined whether the rinsing time T2 has elapsed. If it is determined in step S68 that the rinse time T2 has not elapsed (NO), the process waits as it is. If it is determined in step S68 that the rinsing time T2 has elapsed (YES), the flow moves to S70. In S70, the washing pump 38 is stopped. Thus, in this rinsing process S50, when the rinsing time T2 passes after the washing pump 38 is driven, the washing pump 38 will stop.

Subsequently, in S72, the rinsing water is drained from the washing tank 30 by driving the drain pump 42 for 40 seconds. In S74, it is determined whether or not "n = N". If it is determined in S74 that "n = N" is not (NO), the process of S56 or less is performed again. The determination of S74 is set, so that the rinse of the rinsing frequency N minutes set in S52 is repeated. If it is determined in step S74 that "n = N" (YES), the rinsing process S50 ends, and the flow returns to the washing / rinsing / drying process S10.

As shown in the washing / rinsing / drying process S10 of FIG. 5, the hot water rinsing process S80 is performed following the rinsing process S50. As shown in FIG. 9, in S82 of hot water rinse process S80, the hot water rinse time T3 corresponding to a course is set. When the standard course or rapid course is selected, 30 seconds is set as the hot water rinsing time T3. When the qualitative course is selected, one minute is set as the hot water rinsing time T3.

When the next S84 of S82 is executed, the water supply valve 51 is opened and the rinsing water is supplied to the washing tank 30. Then, in S86, it is determined whether the water level detector 56 is on. If it is determined in S86 that the water level detector 56 is not on (NO), it waits as it is. If it is determined in S86 that the water level detector 56 is on (YES), the flow proceeds to S88 to close the water supply valve 51.

If S90 is followed by S88, the washing pump 38 is driven. When the washing pump 38 is driven, rinsing is started. In the next step S92, the heater 35 is turned on. When the heater 35 is turned on, the temperature of the washing water introduced into the washing tank 30 increases. In S94, it is determined whether the rinsing water temperature is 70 ° C or higher. If it is determined in step S94 that the rinse water temperature is not 70 ° C. or higher (NO), the process waits as it is. If it is determined in S94 that the rinse water temperature is 70 ° C. or higher (YES), S96 shown in FIG. 10 is performed.

In S96, it is determined whether the hot water rinsing time T3 has elapsed. If it is determined in S96 that the hot water rinsing time T3 has not elapsed (NO), the flow moves to S98. In S98, it is determined whether the rinsing water temperature is less than 65 ℃. If it is determined in S98 that the rinse water temperature is less than 65 ° C (YES), S100 is performed to turn on the heater 35. After S100 is executed, S96 is executed again. If it is determined in S98 that the rinse water temperature is not less than 65 ° C (NO), the flow moves to S102. In S102, it is determined whether or not the rinsing water temperature is 70 ℃ or more. If it is determined in S102 that the rinsing water temperature is 70 ° C. or higher (YES), S104 is executed to turn off the heater 35. Then, execute S96 again. If it is determined in S102 that the rinse water temperature is not 70 ° C or higher (in the case of NO), S96 is executed again. By setting the processes of S98 to S104, the rinsing water temperature is maintained between 65 ° C and 70 ° C.

If it is determined in S96 that the hot water rinsing time T3 has elapsed (YES), S106 is executed to turn off the heater 35. S108 is followed by S108 to stop the washing pump 38. S110 is continued to S108. When the S110 is executed, the drain pump 42 is driven for 40 seconds to drain the rinsing water from the washing tank 30. In the above, the hot water rinsing process S80 ends and returns to the washing / rinsing / drying process S10.

As shown in the washing / rinsing / drying process S10 of FIG. 5, the drying process S130 is performed subsequent to the hot water rinsing process S80. As shown in FIG. 11, in S132 of drying process S130, the drying time T4 corresponding to a course is set. If the standard course is selected, set the drying time to 30 minutes. If qualitative course is selected, set 45 minutes as drying time. If rapid course is selected, set 15 minutes as drying time.

Subsequent to S132, S134 is executed. The heater 35 is turned on by executing S134. When the heater 35 is turned on, the air temperature in the washing tank 30 becomes high. In operation S136, the drying fan 60 is driven. When the drying fan 60 is driven, outside air is sucked into the washing tank 30. The air sucked into the washing tank 30 is exhausted to the outside at the exhaust port 62. Thus, the inside of the washing tank 30 becomes high temperature and air is sucked in from the outside to the washing tank 30, and the air is exhausted to the outside, and drying of the tableware 17 is performed.

Subsequently to S136, in S138, it is determined whether or not the drying time T4 has elapsed at the start of driving the drying fan 60. If it is determined in step S138 that the drying time T4 has not elapsed at the start of driving the drying fan 60 (NO), then the process moves to S140.

In S140, whether or not the temperature in the washing tank 30 is 70 ℃ or more. The temperature in the washing tank 30 is detected by the washing tank thermistor 43. If it is determined in S140 that the temperature in the washing tank 30 is 70 ° C. or more (YES), the process moves to S142 to turn off the heater 35. Then, execute S138 again. If it is determined in S140 that the temperature in the washing tank 30 is not 70 ° C or more (in the case of NO), S144 is executed.

In S144 determines whether the temperature in the washing tank 30 is less than 69 ℃. When it is determined in S144 that the temperature in the washing tank 30 is less than 69 ° C. (YES), the process moves to S146 to turn on the heater 35. After performing S146, S138 is executed again. If it is determined in S144 that the temperature in the washing tank 30 is less than 69 ° C. (NO), S138 is executed again. By performing S140 to S146, the air temperature in the washing tank 30 is maintained at 69 ° C to 70 ° C.

On the other hand, if it is determined in step S138 that the drying time T4 has elapsed at the start of driving the drying fan 60 (YES), the process moves to S148. In S148, the heater 35 is turned off. Subsequent to S148, in S150, the drying fan 60 is stopped. In S152 executed next to S150, the RAM of the controller 41 stores the selected course and the driving time up to that time. The operation time is a time from when the start button 21 is pressed (S16) to when the drying fan 60 is stopped (S150). Continue to S154 and turn off the dishwasher 10. Then, the drying process 130 ends to return to the washing / rinsing / drying process S10.

As shown in FIG. 5, when the drying process 130 is performed, the washing / rinsing / drying process S10 ends.

The operation remaining time display processing S200 will be described. The operation remaining time display processing S200 is executed in parallel with the washing / rinsing / drying processing S10.

As shown in Fig. 12, in S202 of the operation remaining time display process S200, it is discriminated whether or not the start button 21 is pressed. If it is determined in S202 that the start button 21 has not been pressed (NO), the process waits as it is. If it is determined in S202 that the start button 21 is pressed (YES), S204 is executed.

Before explaining the process of S204, the time schedule for each course used in this process will be explained. The course timetable is stored in the ROM of the controller 41, and stores courses for each sequence and time corresponding to these courses as shown in FIG. The course is divided into test drive course, standard course, qualitative course and rapid course. The series is divided into five groups, series 1 to 5. Series 1 assumes a case where the temperature of the washing water or the rinsing water supplied to the washing tank 30 is high. Series 2, Series 3, and Series 4 assume a case where water or rinsing water at a temperature between Series 1 and 5 is supplied. As in series 1, the temperature of the washing water or the rinsing water to be supplied is high when the hot water heater is connected to the summer and the external water supply flow passage 54 having a high tap water temperature. As in series 5, it is summer in which the tap water temperature is low when the temperature of the washing water or the rinsing water to be supplied is lowered. When the temperature of the washing water or the rinsing water supplied to the washing tank 30 is high, the time is shortened until the washing water and the rinsing water reach a predetermined temperature (45 ° C in washing, 70 ° C in rinsing) in washing and rinsing. Conversely, if the temperature of the wash water or rinsing water to be supplied is low, it takes a long time from washing and hot water rinsing until the washing water or rinsing water reaches a predetermined temperature. Therefore, the time required for the operation of the standard course and the qualitative course is set long in the order of series 1 to series 5. For example, in series 1, the operation time when the dishwasher 10 is operated in the standard course is 50 minutes, but in series 5, the operation time is 90 minutes. That is, the time set corresponding to the rapid course can be lengthened in the order of series 1 to series 5. The time ratio of the standard course, the qualitative course, and the rapid course is set in consideration of the temperature of the bath T1 at the time of washing and the time of hot water rinsing at the time of hot water rinsing T3.

The test run time is set by the installer considering the tap water temperature at the time when the dishwasher 10 is installed. How to set the commissioning time in consideration of the tap water temperature is described in the installation manual referenced by the installer. For example, 18 minutes is set as the commissioning time in winter. It is executed by pressing the buttons provided on the operation panel 18 continuously for a predetermined order and for a predetermined time.

You can use multiple types of timetables for each course. In this case, different course schedules are used in response to the case where the hot rinse button 22 is operated to select the hot water rinse and the drying button 24 is operated to change the drying time.

When installing the dishwasher 10, the installer may be configured to allow the user to directly distinguish whether the tap water is directly supplied to the external water supply passage 53 or the hot water is supplied from the hot water heater. Then, the remaining time of the operation is accurately estimated using the timetable for each course corresponding to the temperature range of the hot water in the geumtanggi.

In the first operation in which the dishwasher 10 is installed, the operation remaining time may be estimated from the operation time when the tap water supplied to the washing tank 30 has a standard temperature (for example, 20 ° C.). In this case, the degree of the remaining operation time displayed at the time of initial operation is not good, but from the next time, the operation remaining time can be estimated based on the operation time at the previous operation. Therefore, the operation remaining time after the next time can be estimated well.

In S204, the course and driving time at the time of the last driving operation, the time schedule for each course are combined, and the sequence is identified. Specifically, the sequence in which the driving time closest to the previous driving time corresponding to the course during the previous driving is stored is specified. The course of the previous operation time and the operation time are stored in the RAM of the controller 41 by executing S152 of the drying process S130 described above. For example, if the standard course is selected at the time of the last operation, and this driving time is 68 minutes, the sequence 3 in which 70 minutes, which is the closest to 68 minutes, is stored corresponding to the standard course of the course-specific timetable is specified.

Subsequent to S204, in S206, the driving time of the present time is estimated from the course timetable based on the specified sequence. For example, when sequence 3 is specified and the qualitative course is selected in this time, it can be estimated that 100 minutes memorized in correspondence with the qualitative course of series 3 in the course schedule of each course is the current time.

The operation interval of the dishwasher 10 may be operated several times in a short time, or may be operated every day. If the operation interval of the dishwasher 10 is short, the temperature difference between the washing water and the rinsing water supplied to the washing tank 30 during the last operation and the present operation is small. For example, when the temperature of the washing water and the rinsing water supplied to the washing tank 30 during the previous operation is lowered, the temperature of the washing water and the rinsing water supplied during the current operation is also lower, and there is little change from the previous operation. . If the temperature difference between the wash water and the rinsing water is small in the previous operation and in the present operation, the time difference from washing and rinsing to the washing water and the rinsing water reaches a predetermined temperature in the previous operation and in the present operation. Therefore, it is possible to accurately estimate the current driving time based on the sequence specified using the previous course and driving time as in the processing of S204.

That is, in the case of specifying the sequence by combining the course and the driving time of the previous driving and the timetable for each course for S204, the driving time is stored in the driving time closest to the previous driving time and longer than the previous driving time. It is preferable to specify in the series. For example, the standard course selected at the time of the last driving operation is 72 minutes. If the driving time is 72 minutes, the sequence in which 70 minutes are stored is specified instead of the series 3 in which 70 minutes are stored, corresponding to the standard course in the course schedule. . This makes it possible to avoid simply estimating the current driving time.

The current driving time is estimated not by using the course timetable shown in FIG. 13 but by calculation. For example, a reference time is set for each of the standard course, the qualitative course, and the rapid course, and the current operation time is calculated from the time difference and the ratio between the reference time and the previous operation time. For example, the standard time of the standard course is set to 70 minutes, and the standard time of the qualitative course is set to 100 minutes. The standard course selected for the previous operation is 10 minutes, which is shorter than the reference time 70 minutes when the operation time is 60 minutes. In the case of the qualitative course selected this time, it can be estimated that 90 minutes, which is reduced from 10 minutes to 100 minutes of this reference time, is the current driving time.

It is also possible to estimate the current driving time using the conversion formula stored in the driving remaining time conversion table shown in FIG. That is, FIG. 14 shows the dishwasher 10 to which the detergent-free course is applied to the rapid course. The course without detergent is a course for washing dishes 17 without using detergent.

In the operation remaining time conversion table shown in Fig. 14, the conversion formulas for the standard, qualitative, and no detergent courses at the time of the current operation are set corresponding to the courses of the standard, qualitative, and no detergent for the previous operation. For example, suppose the standard course was selected during the last drive and the driving time was 60 minutes. Assume that the qualitative course is selected at this time. In the operation remaining time conversion table, "+33 minutes" is set in the qualitative course in the previous operation in correspondence with the standard course in the previous operation. Therefore, it can be estimated that the current driving time is 93 minutes by adding 33 minutes to the previous 60 minutes of driving time.

For example, a qualitative course is selected at the time of the last driving, and this driving time is 100 minutes. Assume that no detergent course was selected at this time. In the operation remaining time conversion table, "* 0.812-11.1 minutes" is set in the detergent-free course at this time in correspondence with the qualitative course in the previous operation. Therefore, this operation time can be estimated to be 70 minutes by following Formula.

Current operating time = 100 × 0.812-11.1 = 70 minutes;

Subsequent to S206, the timer is activated in S208. The timer is installed in the controller 41. S208 is executed after it is determined in S202 that the start button 21 has been pressed. Therefore, the timer calculates the time (timer time) after the start button 21 is pressed.

The next time S210 is executed, the operation remaining time is displayed on the time display unit 27. The operation remaining time is a time until the operation of the dishwasher 10 is completed, and can be obtained by subtracting the timer time calculated in S210 from the operation time estimated in S206.

In S212, it is determined whether the operation of the dishwasher 10 is finished. If it is determined in S212 that the operation is not finished (NO), S210 is executed. That is, when the operation is not finished, S210 is repeatedly executed. This reduces and displays the remaining operation time. That is, it is preferable that the operation remaining time displayed on the time display unit 27 is displayed in large units when the time is large, and in small units when the time is small. For example, if the remaining driving time exceeds 95 minutes, the remaining driving time is displayed as 2 hours. If the remaining time exceeds 30 minutes and is less than 95 minutes, it is displayed in 5 minute increments. If the operation remaining time is more than 1 minute but less than 30 minutes, it is displayed in units of 1 minute. If the operation remaining time is less than 1 minute, it is displayed in units of 1 second. This is because the smaller the remaining driving time (the closer the end of driving), the higher the user's interest in the remaining driving time.

If it is determined in S212 that the operation is finished (YES), S214 is executed. By executing S214, the display of the operation remaining time performed by the time display unit 27 becomes zero. By executing S214, the display of the operation remaining time becomes zero with the end of the operation of the dishwasher 10. Then, the operation remaining time display processing S200 ends.

The operation remaining time may be estimated based on the drying time T4 at the time when the drying process S130, which is the last process of the washing / rinse / drying process S10, is started. The drying time T4 is determined collectively regardless of the tap water temperature. Therefore, by estimating the operation remaining time on the basis of the drying time T4, the estimation accuracy can be made higher (operation is terminated correctly when the operation remaining time decreases to zero).

In this case, when the operation remaining time estimated at the start of the drying process S130 is shorter than the operation remaining time displayed until then, the display is changed to the estimated operation remaining time. For example, if the estimated driving remaining time is 30 minutes and the displayed driving time is 30 minutes, 30 minutes are displayed. If the estimated operation remaining time at the start of the drying process S130 is longer than the indicated operation remaining time, the display is maintained until the converted estimated operation remaining time is reached. For example, if the estimated driving remaining time is 30 minutes and the displayed driving remaining time is 28 minutes, the display of 28 minutes is maintained until the estimated driving remaining time is 28 minutes. Then, after the remaining operation time reaches 28 minutes or less, the display time is sequentially decreased.

The pressure of the tap water supplied to the dishwasher 10 is high due to the height of the space in which the dishwasher 10 is installed. For example, the tap water pressure at the high water level in the mansion is lower than the pressure at the low water level. If the tap water pressure is high, the amount of tap water supplied to the washing tank 30 increases per unit time. Conversely, when the tap water pressure is low, the amount of tap water supplied to the washing tank 30 per unit time decreases. Therefore, the time until water supply is complete | finished to the washing tank 30 by the height of tap water pressure changes. If the time until water supply ends, the time until the end of each driving course (operation time) also changes accordingly. That is, the operation time includes a change factor of the operation time according to the height of the tap water pressure.

The dishwasher 10 estimates the operation remaining time by using the operation time at the time of last driving. Using the operation time of the previous operation time, it is possible to estimate the operation remaining time in the direction of correcting the fluctuation of the operation time due to the height of the tap water pressure. For example, when the tap water pressure is high, the water supply time is shortened, and the previous operating time is also shortened. The tendency for increased tap water pressure remains the same either last time or this time. If the previous operation time is shortened, it is possible to estimate the operation remaining time at once using this, and the accuracy is further improved.

Second Embodiment

A second embodiment of the present invention will be described with reference to the drawings. That is, the description overlapping with the first embodiment will be omitted, and the characteristic parts as the second embodiment will be mainly described.

The washing process S300 shown in FIG. 15 is an alternative to the washing process S12 (FIGS. 6 and 7) of the first embodiment. Since S302 and S304 of washing process S300 are the same as S14 and S16 of washing process S12, description is abbreviate | omitted. When S306 is executed, the water supply valve 51 is opened similarly to S18 of the washing process S12, and water is supplied to the washing tank 30. At the same time as the execution of S306, the controller 41 starts timekeeping. Subsequent to S306, S308 is the same content as S20 of S12, and description thereof is omitted.

When S310 is executed, the water supply valve 51 is closed as in S22 of the washing process S12. The water supply valve 51 closes and the controller 41 ends timekeeping.

Subsequent to S310, in S312, the time when the controller 41 is displayed (that is, the time from when the water supply valve 51 opens to closes) is stored in the RAM of the controller 41 as the water supply time "k0".

Since S314, S316, and S318 are the same contents as S24, S26, and S28 of washing | cleaning process S12, description is abbreviate | omitted.

As shown in FIG. 16, it is determined in S320 whether 3 minutes passed. S320 performs S322 when it is determined in S318 whether the wash water temperature is 45 ° C. or more (in the case of NO).

Since the processing of S322 to S328 is the same as that of S34 to S40 of the washing process S12 (first embodiment), further description is omitted.

By setting the processing of S322 ~ S328 is to maintain the wash water temperature between 55 ℃ 60 ℃.

On the other hand, if it is determined in S320 that 3 minutes have elapsed (YES), the flow moves to S330 to turn off the heater 35 and at the same time stops the washing pump 38 in S332. That is, after 3 minutes after determining that the washing water temperature is 45 ° C. or higher in S318, the heater 35 is turned off and the washing pump 38 is stopped to wash the dishes 17 temporarily.

Next to S332, foam response processing S350 is executed.

As shown in Fig. 17, in the first processing S352 of the foam response processing S350, it is determined whether 10 seconds have elapsed since the washing pump 38 stopped. If it is determined in S352 that 10 seconds have not elapsed since the washing pump 38 stopped (NO), the process waits as it is. If it is determined in S352 that 10 seconds have elapsed since the washing pump 38 stopped (YES), S354 is executed.

When the washing pump 59 is operated and the food 17 is washed in the washing tank 30, when a detergent (for example, a neutral detergent for kitchen) other than a dedicated detergent for the dishwasher is incorrectly added, the washing pump 30 is in the washing tank 30. A lot of foam occurs. If bubbles are generated in the washing tank 30, the water level of the washing water is reduced only as much as the washing water is changed to the foam. When the water level of the washing tank 30 is lowered, the water level of the water level chamber 56a of the water level detector 56 in communication with the washing tank 30 is also lowered. If S352 is set, S354 is not executed for 10 seconds after the washing pump 38 stops. During this 10 seconds, the washing water attached to the inner wall of the washing tank 30 and the dishware 17 drops, and the surface of the water with the wavelength is calmed down, and the washing water level is stabilized.

Subsequent to S354, in S356, it is determined whether the water level detector 56 is on. If it is determined in S356 that the water level detector 56 is not on (NO), it waits as it is. If it is determined in S356 that the water level detector 56 is on (YES), the flow moves to S358.

In S358, the water supply valve 51 is closed and the supplementary water supply to the washing tank 30 is finished. As soon as the water supply valve 51 is closed, the controller 41 ends timekeeping.

Subsequently to S358, in S360, the time counted by the controller 41 is stored in the RAM of the controller 41 as the maintenance time " h0 ". When bubbles are generated, the water level of the washing tank 30 is lower than when the water supply valve 51 is closed in S310 of the washing process S300 and water supply is finished. Even when the foam flows into the water level chamber 56a of the level detector 56, the float 56b disposed inside the water level chamber 56a is floated in the washing water in a state buried in the foam to accurately detect the level of the washing water. Therefore, the maintenance time h0 becomes long in proportion to the amount of foaming.

In S362, "maintenance time h0 / water supply time k0" is calculated. In S364, it is determined whether or not the maintenance time h0 / water supply time k0 <0.1. If it is determined in S364 that the "maintenance time h0 / water supply time k0 <0.1" is not (in the case of NO), it is considered that a lot of bubbles have occurred. Here, the process moves to S366 to perform a parcel operation. In the defoaming operation, the drainage from the washing tank 30 and the water supply to the washing tank 30 are repeated in predetermined cycles to remove bubbles.

Then, the foam correspondence processing S350 is finished. If it is determined in S364 that "repair time h0 / water supply time k0 <0.1" (YES), it is considered that the amount of foaming is small, the process skips S366 (foaming operation) and ends the foam response processing S350 as it is.

The processing of S380 to S408 executed in the foam correspondence processing S350 shown in Figs. 16 and 18 is the same as the processing of S18 to S46 of the washing processing 12 (the first embodiment), and further description thereof is omitted.

Operation remaining time display processing S450 will be described. The operation remaining time display processing S450 is executed in parallel with the washing processing S300, the rinsing processing S50, the hot water rinsing processing S80, and the drying processing S130.

As shown in Fig. 19, in S452 of the operation remaining time display process S450, it is discriminated whether or not the start button 21 is pressed. If it is determined in S452 that the start button 21 has not been pressed (NO), the process waits as it is. If it is determined in S452 that the start button 21 has been pressed (YES), the flow moves to S454.

In S454, it is determined whether the parcel operation has been performed in the last operation. In S454, when it is determined that the parcel operation has been performed in the previous operation (YES), S458 is performed.

In S458, the sequence is specified by combining the course and driving time and the timetable for each previous driving.

In S460 following S458, the current driving time is estimated from the course timetable based on the specified sequence.

In the case where the defoaming operation is performed due to the foam response processing S350 being processed during the previous operation, the washing time becomes longer by the time of the defoaming operation. Misuses of detergent other than dishwasher detergents are rare, and it is unlikely that wrong detergents will be added in succession. Therefore, if the parcel operation is performed in the last operation, instead of using the course and operation time of the previous operation, the sequence is specified by combining this with the course timetable for the previous operation and the current operation time is estimated from the specified series. do. Therefore, even if the parcel operation is performed at the time of the previous operation, it is possible to accurately estimate the current operation time. In other words, if the parcel operation is performed in the previous operation, the sequence is specified by combining the course and operation time during the operation before the predetermined operation recovery with the course timetable, not during the previous operation, and the current operation time is determined from the specified series. It may be specified.

On the other hand, in S454, when it is determined that the parcel operation has not been performed in the previous operation (NO), S456 is performed. In S456, the course and driving time at the time of last driving, the time schedule for each course are combined, and the sequence is identified. In other words, if the parcel operation is not performed in the previous operation, since the washing time does not become longer than usual due to the parcel operation, the sequence is determined by combining the course and the operation time and the timetable for the previous operation. The time can be estimated accurately. After performing S456, the flow proceeds to S460.

Subsequently, the processing of S462 to S468 is the same as that of S208 to S214 of the operation remaining time display processing S200 (first embodiment), and thus the above description is omitted.

The controller 41 memorizes the operation time and the presence or absence of the parcel operation at the time before the previous time, and when the parcel operation is performed at the time of the previous operation, when the last time before the last previous operation of the rectus that the parcel operation was not performed. The driving time can be used to indicate the current driving time.

In the case where the parcel operation is performed for each operation of the dishwasher 10, there is a possibility that the user may not recognize that a detergent other than a dedicated detergent is injected. In this case, when the parcel operation is performed during the previous operation, even if the current driving time is estimated using the course and the driving time of the previous operation, the parcel operation is performed during the previous operation. Cannot be estimated accurately. Therefore, when the defoaming operation is performed according to the operation | movement of the predetermined number of times of the dishwasher 10, it is preferable to estimate the operation | movement remaining time from the predetermined operation time set previously. This predetermined operation time is set to, for example, a standard operation time plus a parcel operation time.

As mentioned above, although the specific example of this invention was described in detail, this is only an illustration and does not limit a claim. What is described in the claims includes all specific embodiments illustrated above.

In addition, the technical elements demonstrated in this specification or drawing show technical usability by single or various combinations, and are not limited to the combination of the claim description at the time of application. In addition, the technique illustrated in the present specification or the drawings is to achieve a plurality of objects at the same time, and has the technical usefulness in itself to achieve a single object thereon.

As described above, the dishwasher according to the present invention adopts a method of estimating the driving time of the current driving time from the driving time of the previous driving, and can estimate the accurate driving time even when a separate driving course is executed in a short time. Even if the driving course is changed, the current driving time can be estimated by the previous operating time, and the accurate operating time can be estimated by using the operating time just before the external factors such as water temperature, water pressure and air pressure change. Even if the defoaming is performed, the effect of accurately estimating the operation time can be obtained.

Claims (5)

The driving course includes a process of washing the dishes by spraying hot water to the dishes, and rinsing the dishes by spraying hot water onto the dishes, and at the same time, a driving course among a plurality of driving courses having different washing times and / or rinsing times with hot water. Is your choice of dishwasher, Last memory means for remembering driving course and driving time at the time of last driving, Driving time storage means for storing a plurality of driving time corresponding to the driving course; Reporting Method, A control means connected to the last time memory means, the operating time sequence memory means and the reporting means, The control means searches for a plurality of driving times stored in the driving time sequence storage means corresponding to the driving course based on the driving course stored in the previous memory means, and is closest to the driving time stored in the previous memory means. Characterized in that it specifies a series that stores the driving time, and reports to the reporting means the remaining time until the end of the current driving operation based on the driving time memorized in correspondence with the currently selected driving course for the specified series. dish washer. The driving course includes a process of washing the dishes by spraying hot water to the dishes, and rinsing the dishes by spraying hot water on the dishes, and at the same time, a driving course among a plurality of driving courses having different washing time and / or hot water rinsing time. Is your choice of dishwasher, Last memory means for remembering driving course and driving time at the time of last driving, Means for calculating the driving time of another driving course from the driving time of an arbitrary driving course, Reporting Method, And a control means connected to the last memory means, the driving time calculating means and the reporting means, wherein the driving time calculating means includes the driving course and the driving time memorized in the last memory means, and the driving of the currently selected driving course in the currently selected driving course. To calculate the time, And the control means reports the remaining time until the end of the current operation to the reporting means based on the calculated operation time by the operation time calculating means. It is a dishwasher that sprays the washing water to dishware to wash the dishes and at the same time the foaming occurs more than a predetermined amount during the washing operation to stop the washing operation to perform the parcel operation. Last driving memory means for storing the driving time and the existence of the parcel driving at the time of the last driving, Previous previous operation memory means for remembering the previous operation time at the previous last operation; Reporting Method, A control means connected to the last driving memory means, the last previous driving memory means and the reporting means, If the parcel operation is not stored in the last driving memory means, the control means reports the remaining time until the end of the current operation to the reporting means based on the operating time stored in the last driving memory means, and at the same time. And when the parcel operation is stored, reporting the remaining time until the end of the current operation to the reporting means based on the operation time stored in the previous driving memory means. The method of claim 3, The previous driving memory means remembers the previous operation time and the existence of the parcel operation during the last previous driving. If the parcel operation is memorized in the last driving memory means, the control means searches retroactively for the previous previous driving memory means until the operation for which the parcel operation is not memorized, and based on the searched driving time until the end of the current operation. Dishwasher, characterized in that for reporting the remaining time to the reporting means. The method of claim 3, The previous driving memory means remembers the operating time at the time of the previous driving. The control means, when the parcel operation is stored in the previous driving memory means, reports the remaining time until the end of the current operation to the reporting means based on the operating time stored in the previous driving memory means. syringe.

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