JP2011062333A - Washing machine and program therefor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To inform whether electricity charges or water charges are saved by actually performing operation in a shorter time for washing or by a smaller number of rinsing times than an operation content set first. <P>SOLUTION: A washing machine is provided with: an opening/closing door 1a through which the laundry is put in and out; an input setting unit 17 for setting operation contents; a dirtiness detection unit 10 for detecting the dirtiness of the laundry; an energy saving display unit 19; a storage unit 20 for storing a first operation content set through the input setting unit 17 and a second operation content determined on the basis of the dirtiness detected by the dirtiness detection unit 10; and a control unit 15 to which output of the input setting unit 17 and output of the dirtiness detection unit 10 are input and which consecutively controls each progression from washing to rinsing and draining. When a first operation content exceeds a second operation content, the control unit 15 lights the energy saving display unit 19 until a predetermined period of time passes after operation ends. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a washing machine for washing clothes and the like and a program thereof.

  Conventionally, this type of washing machine opens the door of the main body, puts laundry (clothing) and an appropriate amount of detergent into the washing tub, and displays the operation details such as the washing time and the number of times of rinsing according to the clothing on the operation display section. Generally, setting is performed by pressing a switch, and then operation is started by pressing a start button.

  On the other hand, in recent years, when the dirt of the laundry is detected by the turbidity of the washing liquid in the washing process, and the laundry is less dirty, the basic performance such as washing performance and rinsing performance can be sufficiently secured. ) An energy-saving washing machine that saves electricity and water bills by driving with less washing time and too many times than the operation content originally set by the user has been proposed. (For example, refer to Patent Document 1).

  FIG. 10 is a system block diagram of an operation display unit in the washing machine. The operation display unit 51 includes an input setting unit 52 and a setting content display unit 53 that displays the set operation content. The input setting means 52 includes a washing time setting switch 52a for setting a washing time, a rinse number setting switch 52b for setting the number of times of rinsing, a dehydration time setting switch 52c for setting the dehydration time, and a drying time when having a drying function. A drying time setting switch 52d for setting the power, a power switch 52e for turning on / off the power, and a start button 52f.

  The dirt detecting means 54 is installed at the bottom of a washing tub (not shown) (or the washing water circulation path in the case of a washing machine having a structure in which washing water accumulated in the bottom is circulated in the washing tub using a small pump). In many cases, dirt is detected and output in several levels by measuring the turbidity and conductivity of washing water.

  The control device 55 is composed of a control means 56 such as a microcomputer, receives an input signal from the input setting means 52, outputs it to the setting content display means 53, and after starting the driving course, A water supply valve and a drain valve are operated to sequentially enter and exit the washing tub, and a series of controls such as motor drive and heater operation are performed to wash, rinse, and dehydrate (and dry) the laundry (clothing, etc.).

  Next, the operation in the above configuration will be described using the flowchart of FIG. The laundry (clothing) and an appropriate amount of detergent are put in the washing tub in the main body of the washing machine, and the operation display unit 51 in FIG. 4 is energized by pressing the power switch 52e of the input setting means 52, and the initial standby state. Until the operation is started after the start button 52f is pressed, the washing time setting switch 52a, the rinse count setting switch 52b, the dehydration time setting switch 52c of the input setting means 52, and the drying time if a drying function is provided. By operating the setting switch 52d, the operation content of each stroke can be set.

  Next, the operation content set by the input setting means 52, the operation content obtained based on the dirt of the laundry detected by the dirt detection means 54, and the details of the actual operation sequence are shown in the flowchart of FIG. As described above, the washing time setting switch 52a, the rinse number setting switch 52b, the dehydration time setting switch 52c, and the washing time, the number of times of rinsing, and the dehydration time set by the drying time setting switch 52d when having a drying function in the above-described initial standby state. The drying time is set by the input setting means 52.

  When the start button 52f is pressed to start the operation content set by the input setting means 52, the washing process is started in S1 (step 1) of the flowchart, and the water supply process is performed in S2 (step 2). After supplying a predetermined amount of tap water in the washing tub, the dirt component of the laundry starts to dissolve in the washing water by rotating the washing drum alternately in the forward rotation direction and the reverse rotation direction in S3 (step 3). When a predetermined time has elapsed in S4 (step 4), the dirt is detected by the dirt detecting means 54 in S5 (step 5).

  When there is little dirt on the laundry in S6 (Step 6), the operation content set by the input setting means 52 in the initial standby state by the user within a range in which basic performance such as washing performance and rinsing performance can be sufficiently secured. After changing to the operation content (saving course) in which the washing time and the number of times of rinsing are reduced, the washing process is performed until the operation content (wash time) newly set in S8 (step 8) is satisfied, and then S9 (step) In 9), the washing process is finished, and thereafter, the operation of the newly set operation contents (the number of times of rinsing, the dehydration time, and the drying time) is performed and finished by S10 to S12 (steps 10 to 12).

JP-A-61-206494

  However, in the conventional configuration, whether the operation content has been changed in the middle according to the dirt of the laundry detected by the soil detection means, that is, the washing time and the number of times of rinsing are less than the operation content initially set by the user. Because there is no easy way to know whether or not you can save electricity and water bills by driving, the amount of laundry (clothing) and how big and small the dirt is for the user, saving that contributes to energy saving It was difficult to realize a series of relations about whether or not driving is possible, and there was a problem that convenience was impaired.

  The present invention solves the above-mentioned conventional problem, and the operation content set by the user using the input setting means before the start of operation is reduced in the washing time and the number of times of rinsing based on the dirt level of the laundry. The purpose is to increase the convenience by making it possible to realize that the electricity and water bills have been saved.

  In order to solve the above-described conventional problems, the washing machine of the present invention includes an opening / closing door for putting laundry in and out of a washing tub, input setting means for setting operation details such as washing time and the number of times of rinsing, and dirt on the laundry. The dirt detection means for detecting the condition, the energy saving display means for economically operating, the storage means for storing the operation state, the output of the input setting means and the output of the dirt detection means are input and washed. , A control device that sequentially controls each process of rinsing and dehydration, and the storage means has a second operation obtained based on the first operation content set by the input setting means and the dirt detected by the dirt detection means. When the second operation content is less than the first operation content, the control device turns on the energy saving display means when the door is opened at least after the operation is completed. One in which the.

  As a result, even when the user leaves the installation location of the washing machine during operation and returns to the installation location of the washing machine after hearing the end buzzer that rings at the end of the operation, On the other hand, it is possible to easily know whether or not it was possible to save electricity bills and water bills by actually operating with less washing time and number of times of washing, and in turn, how much laundry and how much dirt If so, it becomes easier to realize a series of relations of whether or not saving operation that contributes to energy saving is possible, and convenience can be improved.

  The washing machine of the present invention can be used even when the user leaves the installation location of the washing machine during operation and returns to the installation location of the washing machine after hearing the end buzzer that blows at the end of the operation. Easily know whether you saved electricity or water bills when you take out the laundry after you finish driving, when you actually drive with less washing time or too many times for the set operation details be able to.

Schematic block diagram of the washing machine in the first embodiment of the present invention Sectional view of dirt detection means of the washing machine Sectional view seen from above the dirt detection means of the washing liquid Sectional drawing of the dirt detection means of the other example of the washing machine Sectional drawing seen from the upper direction of the stain | pollution | contamination detection means of the other example of the washing machine Sectional drawing seen from the upper direction of the stain | pollution | contamination detection means of the other example of the washing machine System block diagram of the operation display section of the washing machine Flow chart showing the operation of the control means of the washing machine The flowchart which shows operation | movement of the control means in the 2nd Embodiment of this invention. System block diagram of operation display unit of conventional washing machine Flow chart showing the operation of the control means of the washing machine

  According to a first aspect of the present invention, there is provided a laundry tub for storing laundry, an open / close door for putting the laundry in and out of the laundry tub, input setting means for setting operation details such as a washing time and the number of times of rinsing, and dirt on the laundry. Detecting dirt detecting means to detect, energy saving display means showing the meaning of economically operating, storage means for storing the state of operation, input the output of the input setting means and the output of the dirt detecting means, wash, And a controller that sequentially controls each of the rinsing and dehydration processes, and the storage means includes a first operation content set by the input setting means and a second value obtained based on the dirt detected by the dirt detection means. The operation content is stored, and when the second operation content is less than the first operation content, the control device turns on the energy saving display means at least until a predetermined time elapses after the operation ends. did Even when the user leaves the installation location of the washing machine during operation and returns to the installation location of the washing machine after hearing the end buzzer that blows at the end of the operation, When the operation is actually performed with a small washing time or the number of times of rinsing, the user can easily know whether or not the electricity bill and the water bill can be saved when the laundry is taken out after the operation is finished.

  In the second invention, in particular, the control device of the first invention turns off the energy-saving display means when the opening / closing door is opened after the operation is completed, so that the operation content initially set by the user is reduced. After knowing whether or not you have actually saved electricity and water bills, you can turn off the energy-saving lamp without performing any special operation. Can save.

  According to a third aspect of the invention, in particular, when the second operation content is less than the first operation content, the control device of the first or second invention lights the energy saving display means during operation. A user who is close to the device during operation can quickly know whether or not he / she has saved electricity and water bills.

  In the fourth aspect of the invention, in particular, the energy saving display means of any one of the first to third aspects is a green lamp, so that an image that contributes to energy saving can be easily associated by performing a saving operation. .

  In particular, the fifth invention is a program for causing a computer to execute at least one means of the washing machine according to any one of the first to fourth inventions. According to this configuration, since it is a program, a part or all of the washing machine of the present invention can be easily realized using a microcomputer or the like. Further, the program can be easily distributed by recording it on a recording medium or distributing the program using a communication line.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments. In addition, the same components as those in the background art are denoted by the same reference numerals and description thereof is omitted.

(Embodiment 1)
FIG. 1 is a schematic configuration diagram of a washing machine according to a first embodiment of the present invention, FIG. 2 is a cross-sectional view of a dirt detection unit, and FIG. 3 is a cross-sectional view as viewed from above the stain detection unit.

  In FIG. 1 to FIG. 3, reference numeral 1 denotes an outer box of the entire washing machine, in which an outer tub 2 is disposed, and a drum 3 as a washing tub is inclined upward from the horizontal direction inside the outer tub 2. It arrange | positions in the state which can be rotated with a rotating shaft. The drum 3 is rotated by a motor 4 connected to the back surface. The drum 3 is provided with a large number of water passage holes (not shown) on the outer peripheral surface, and functions as a washing tub, a dewatering tub, and a drying tub.

  A water intake 5 is connected to the lowest part on the rear side of the outer tub 2 provided at the rear end, and is connected to a drain pipe 7 that is opened and closed by a drain valve 6. A circulation path 9 connected to the discharge port 8 for discharging the washing liquid taken from the water intake port 5 to the drum 3 is communicated between the water intake port 5 and the drain valve 6. The washing liquid and the rinsing liquid can be circulated through the circulation path 9.

  The lateral flow path 9a formed in the horizontal direction of the circulation path 9 is provided with a soil detection means 10 for detecting the state of the washing liquid, and the washing liquid that has entered the circulation path 9 from the water intake 5 is in the horizontal direction. It is provided at a predetermined downstream distance L from the inlet flowing into the flow path 9a. The lateral flow path 9a may be provided with a slight inclination from the horizontal direction.

  The dirt detection means 10 is composed of a transmissivity sensor composed of a light emitting element 11 such as an LED and a light receiving element 12 such as a phototransistor, and is opposed to the left and right with the lateral flow path 9a of the circulation path 9 sandwiched from the outside. The lateral flow path 9a in the portion sandwiched between the light emitting element 11 and the light receiving element 12 is formed of a light-transmitting material, and the light emitted from the light emitting element 11 is circulated in the circulation path 9. The washing light is received by the light receiving element 12, converted into a voltage and output. For this reason, the dirt detection means 10 has a light-shielded sealed structure so that the light receiving element 12 does not receive light from the outside.

  The dirt detection means 10 is installed in a lateral flow path 9a in which the circulation path 9 is arranged in the horizontal direction with respect to the ground, and the light emitting element 11 and the light receiving element 12 are located near the center with respect to the vertical direction in the cross section of the circulation path 9. The washing liquid state is detected at a lower position that avoids the upper layer portion of the flow path cross section.

  The light emission control of the light emitting element 11 and the capture of the output of the light receiving element 12 are performed by a control circuit (not shown) such as a microcomputer, and the output value from the light receiving element 12 is used as the permeability of the washing liquid passing through the circulation path 9. Processing is performed, and the washing process and the rinsing process are controlled based on the transmittance.

The washing liquid in the washing process gradually becomes cloudy as the dirt from the laundry is dissolved by the detergent and stirring. For this reason, it is possible to determine the amount of dirt and the completion of cleaning by observing the change in the permeability of the detergent liquid and the permeability with time.

  Next, the operation | movement which detects the transparency of the washing machine of this Embodiment is demonstrated. By rotating the drum 3 at the time of washing or rinsing, the washing liquid in the drum 3 or the outer tub 2 enters the circulation path 9 from the water intake 5, and the lateral flow path of the circulation path 9 having the washing liquid state detecting means 10 is provided. Circulate to drum 3 through 9a. As a result, the water in the circulation path 9 is always equal to the washing liquid in the drum 3 and the outer tub 2.

  In the dirt detection means 10, for example, light is emitted from the light emitting element 11 every minute, and the output received by the light receiving element 12 is used as control of the washing process and the rinsing process as the permeability of the washing liquid at that time.

  Since the washing liquid is water containing a detergent, there are many bubbles. In particular, in the lateral flow path 9a where the dirt detecting means 10 is placed, bubbles are likely to rise and flow through the upper layer part, but the light emitting element 11 and the light receiving element 12 are placed in the lateral flow path 9a and the upper layer part of the flow path cross section is avoided. Therefore, the permeability of the washing liquid can be accurately measured without being affected by the bubbles.

  Further, if the dirt detection means 10 detects at the center position avoiding the upper layer part and the lower layer part of the lateral flow path 9a, the contaminants are contained in the washing liquid entering the circulation path 9 from the lower part of the outer tub 2. If it is included, most of it passes through the lower layer when flowing through the lateral flow path 9a, so that it is possible to detect the washing liquid with less contaminants flowing through the center position.

  Further, since the dirt detection means is provided at a certain downstream from the entrance of the lateral flow path 9a, the bubbles contained in the washing liquid that has entered the lateral flow path 9a flow downstream while floating upward. It is possible to detect a washing liquid with less air bubbles flowing below.

  As described above, by arranging the light emitting element 11 and the light receiving element 12 of the dirt detection means 10 on the left and right sides that are near the center with respect to the vertical direction in the cross section of the circulating water channel 9, the bubbles in the circulating channel 9 are always present. As a result, it is possible to measure the permeability of the washing liquid without being affected by the above, so that there is no risk of variation in the measurement of the permeability due to the number of bubbles in the type and amount of the detergent.

  FIG. 4 shows another example of the dirt detection means 10, in which the light emitting element 11 and the light receiving element 12 are inserted into the lateral flow path 9 a of the circulation path 9, and the light emitting element 11 and the light receiving element 12 flow in the lateral direction. It is located in the path 9a. According to this configuration, since the permeability of the washing liquid can be detected in the circulation path 9, the circulation path 9 does not need to use a light-transmitting material, and the wall of the circulation path 9 is contaminated. The light receiving level of the light receiving element 12 does not deteriorate, and the light emitting element 11 and the light receiving element 12 are simply inserted into the circulation path 9 to form a waterproof structure, and there is no need for a light-shielded sealed structure.

  Further, the dirt detection means 10 detects at a lower position avoiding the upper layer portion in the horizontal flow path 9a or at a central position avoiding the upper layer portion and lower layer portion in the horizontal flow path 9a. The light emitting element 11 and the light receiving element 12 of the sensor are provided outside the lateral channel 9a or in the lateral channel 9a.

The light emitting element 11 and the light receiving element 12 of the transmittance sensor are laterally arranged so that they can be detected at a lower position avoiding the upper layer portion in the lateral flow path 9a or at a central position avoiding the upper layer portion and the lower layer portion. When provided outside the flow path 9a, it is arranged facing the left and right direction, that is, in the horizontal direction, and when provided inside the horizontal direction flow path 9a, it is arranged in the vertical direction, that is, the vertical direction in addition to the horizontal direction. Is possible.

  FIG. 5 shows another example of the dirt detection means 10, which is a conductivity sensor having a pair of electrodes 13 a and 13 b immersed in the circulation path 9. A pair of electrodes 13a and 13b are inserted on the left and right sides of the path 9a, and the conductivity of the washing liquid flowing through the circulation path 9 is measured. The conductivity is measured by, for example, forming an RC oscillation circuit with the impedance of the washing liquid between the electrodes 13a and 13b and a capacitor on a control circuit (not shown), and outputting the change in the washing liquid impedance as a frequency change. Further, this may be converted into a voltage value.

  As a result, when measuring the conductivity of the washing liquid, it is possible to determine the type of detergent and the amount of detergent in the washing liquid, and also to determine the amount of dirt of the conductive component mainly composed of sweat that has melted from the laundry. The washing process and the rinsing process can be controlled.

  Even in the case of detecting the conductivity, the electrodes 13a and 13b are installed on the left and right in the lateral flow path 9a of the circulation path 9, and the state of the washing liquid flowing at the lower position avoiding the upper layer portion of the horizontal flow path 9a is detected. By doing so, it is possible to measure the exact conductivity of the washing liquid without being affected by the bubbles in the circulation path 9.

  FIG. 6 shows another example of the dirt detecting means 10, which includes a permeability sensor that detects the permeability of the washing liquid with the light emitting element 11 and the light receiving element 12, and a pair of electrodes 13 a and 13 b. A conductivity sensor for measuring the conductivity of the washing liquid is installed at the same time.

  By detecting the two states of washing liquid permeability and conductivity, for example, if the conductivity is lower than a predetermined value but the permeability is higher than another predetermined value, a liquid detergent is introduced. If the conductivity is higher than the standard value even if the permeability reaches the level equivalent to tap water, it will be judged that the rinse is insufficient and the rinse will be extended. If the rate falls below the reference value, it can be used for control such as ending the rinsing process.

  FIG. 7 is a system block diagram of the operation display unit 14. The control device 15 has a control means 16 composed of a microcomputer or the like, receives an input signal from the input setting means 17 and outputs it to the setting content display means 18, and the output signal of the dirt detection means 10 is the control means 16. Is input.

  After starting the operation course, the water supply valve (not shown) and the drain valve 6 are operated to sequentially enter and exit the water in the outer tub 2, drive the motor 4, and operate the heater, and the laundry. Wash (rinse, etc.), rinse, and dehydrate (and dry). The operation display unit 14 is disposed in the upper front portion of the outer box 1 and is provided at an easily operable position.

  Reference numeral 19 denotes an energy saving lamp as an energy saving display means that indicates the meaning that the user is operating more economically than the operation content set by the user using the input setting means 17, and uses green. Thereby, it becomes easy to associate images that contribute to energy saving by performing the saving operation.

  Next, the operation of the present invention will be described with reference to the flowchart of FIG. A laundry (clothing) and an appropriate amount of detergent are put into the drum 3 of the washing machine, and the power is turned on by pressing the power switch 17e of the input setting means 17 on the operation display unit 14 in FIG. 7, which is called an initial standby state. The washing time setting switch 17a, the number of rinsing times setting switch 17b, the dehydration time setting switch 17c of the input setting means 17 and the drying time setting when having a drying function until the operation is started after the start button 17f is pressed. By operating the switch 17d, the operation content of each stroke can be set.

  Next, the details of the operation sequence set by the input setting unit 17, the operation content obtained based on the laundry stain detected by the stain detection unit 10, and the operation sequence actually performed will be described. As shown in the flowchart of FIG. 8, in the above-described initial standby state, the washing time setting switch 17a, the number of times of rinsing setting switch 17b, the dehydration time setting switch 17c, and the washing function set by the drying time setting switch 17d if a drying function is provided. When the operation is started by pressing the start button 17f to execute the time, the number of times of rinsing, the dehydration time, and the drying time, the washing process is started in S1 (step 1) of the flowchart.

  After supplying a predetermined amount of tap water into the drum 3 in the water supply process of S2 (step 2), the drum 3 is alternately rotated in the forward rotation direction and the reverse rotation direction in step S3 (step 3). When the dirt component starts to dissolve in the washing water and a predetermined washing time elapses in S4 (step 4), the dirt detection means 10 detects the dirt in S5 (step 5).

  When there is little dirt on the laundry in S6 (step 6), the operation content set by the input setting means 17 by the user in the initial standby state within a range in which basic performance such as washing performance and rinsing performance can be sufficiently secured. (In the embodiment of FIG. 8, the washing time is 20 minutes), the operation content of the “saving course” in which the washing time and the number of times of rinsing are reduced (in the embodiment of FIG. 8, the washing time is 15 minutes) is changed to S7 ( If the washing time obtained based on the dirt in step 7) is smaller than the operation content set by the user, the energy saving lamp 19 is turned on in S8 (step 8).

  On the other hand, if the washing time determined based on the dirt in S7 (Step 7) is larger than the operation content set by the user, the setting content such as the washing time is not changed in S9 (Step 9), and the energy is saved. The lamp 19 is not lit.

  When the washing time determined based on the dirt in S10 (Step 10), that is, 15 minutes changed from 20 minutes, the washing process is finished in S11 (Step 11), and the rinsing in S12 (Step 12). The process, the dehydration process of S13 (Step 13), and the drying process of S14 (Step 14) are executed, and when the series of processes set in S15 (Step 15) is completed, it is notified that all the operations have been completed. Sound the end buzzer. At this time, the energy-saving lamp 19 is not turned off, and the state of the energy-saving lamp 19 is continued until 120 minutes have elapsed from the end of operation in S16 (step 16), and then the energy-saving lamp 19 is turned on in S17 (step 17). Turns off.

  As a result, even when the user leaves the installation location of the washing machine during operation and returns to the installation location of the washing machine after hearing the end buzzer that rings at the end of the operation, On the other hand, it is possible to easily know whether or not it was possible to save electricity and water bills by operating with less washing time and the number of times of washing, and thus how much laundry and how much dirt If so, it is possible to increase the convenience that it becomes easier to realize a series of relations, that is, whether or not saving operation that contributes to energy saving is possible.

  In the present embodiment, a specific name and number for setting the contents of each process by the user by the input setting means 17 will be described, and further, a specific timing for turning on the energy saving lamp 19 will be described. Although described, this is not intended to limit the invention.

  In the present embodiment, the first operation content set by the user using the input setting means 17 in the initial standby state is compared with the second operation content obtained based on the dirt detected by the dirt detection means 10. However, this is not intended to limit the present invention, and the number of times of rinsing or the time may be compared, and the dehydration time and drying time may be compared. Also good. Further, the determination may be made by comparing with the combination of the washing time and the number of times of rinsing.

(Embodiment 2)
FIG. 9 is a flowchart showing the operation of the control means of the second embodiment of the present invention. A feature of the second embodiment is that after sounding an end buzzer notifying that all operations have been completed in S15 (step 15), energy is saved until 120 minutes elapses after the operation ends in S16 (step 16). When it is detected that the opening / closing door 1a is opened in the newly added S18 (step 18) while the state of the lamp 19 is continued, the energy saving lamp 7 is quickly turned off in S17 (step 17). It is to do.

  After the operation is over, after knowing whether the user has actually saved the electricity bill or water bill for the operation contents initially set by the user, the energy saving lamp can be turned off without performing any special operation. Not only can it be increased, it can also save on the electricity bill to turn on the energy saving lamp.

  As described above, in the washing machine according to the present invention, the user sets up the washing machine during driving when the driving contents set in the initial setting are actually operated with a small washing time and the excessive number of times. Even when you leave the place and hear the end buzzer that sounds at the end of driving and return to the place where the washing machine is installed, it is easy to see if you can save electricity and water bills when you take out the laundry after driving Therefore, it is useful as a device having a washing function, such as a washing machine and a dishwasher.

DESCRIPTION OF SYMBOLS 10 Dirt detection means 14 Operation display part 15 Control apparatus 16 Control means 17 Input setting means 18 Setting content display means 19 Energy saving lamp (energy saving display means)
20 storage means

Claims (5)

A laundry tub for storing laundry; an open / close door for putting laundry in and out of the laundry tub; input setting means for setting operation details such as washing time and the number of times of rinsing; and dirt detection means for detecting dirt on the laundry. , Energy saving display means for economically indicating the meaning of operation, storage means for storing the state of operation, output of the input setting means and output of the dirt detection means are input, washing, rinsing and dehydration processes And the storage means stores the first operation content set by the input setting means and the second operation content obtained based on the dirt detected by the dirt detection means, The control device, wherein when the second operation content is less than the first operation content, the energy saving display means is lit at least until a predetermined time has elapsed after the operation is completed. 2. The washing machine according to claim 1, wherein the control device turns off the energy saving display means when the door is opened after the operation is completed. 3. The washing machine according to claim 1, wherein when the second operation content is less than the first operation content, the control device turns on the energy saving display means during the operation. The washing machine according to any one of claims 1 to 3, wherein the energy saving display means is a green lamp. The program for making a computer perform at least 1 means of the washing machine of any one of Claims 1-4.

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