JP7329723B2 - washing machine - Google Patents

Description

TECHNICAL FIELD The present invention relates to a washing machine for soaking clothes and the like.

Conventionally, in this type of washing machine, in the washing process, the agitation time is set in a plurality of steps for each temperature range according to the temperature of the wash water supplied by the water supply means and the amount of laundry put into the washing tub. When the temperature of the washing water in the washing tub is lower than the predetermined temperature, the hot water heater is energized to raise the temperature of the washing water. When the washing water temperature exceeds the predetermined temperature, the hot water heater is stopped. A plurality of stages of agitation times are set in advance according to the temperature of the washing water, and agitation is performed according to the temperature of the washing water (see, for example, Patent Document 1).

JP 2012-170687 A

However, in the conventional configuration, when the washing water temperature is low, the washing tub is rotated while warming the washing water with the hot water heater. In this configuration, the lower the temperature of the washing water, the longer it takes to raise the washing water to a predetermined temperature and the longer the stirring time. There was a problem that the fabric was damaged due to the increase in

SUMMARY OF THE INVENTION It is an object of the present invention to provide a washing machine capable of achieving a high washing effect by suppressing damage to cloth regardless of washing water temperature conditions.

In order to solve the above conventional problems, the washing machine of the present invention comprises a washing tub for storing clothes , a motor for rotating the washing tub, control means for executing a washing process , and heating means for heating washing water. and, in the washing step , the control means includes a weak washing step of heating the washing water until the temperature of the washing water reaches a predetermined temperature, and a predetermined time provided after the weak washing step. and a main washing step that ends when the washing process has elapsed, and in the weak washing step, a weak washing operation that controls the motor so as not to rotate the washing tub at an angle of approximately 150 degrees or more is performed, and the main washing step is performed. In the washing process, a main washing operation is executed in which the motor is controlled so that the clothes are dropped from the top to the bottom of the washing tub by the rotation of the washing tub, and the weak washing operation is time-variably controlled. .

The washing machine of the present invention can realize a stable washing machine force regardless of washing conditions.

Schematic configuration diagram of a drum-type washing machine according to the first embodiment of the present invention Block diagram of the drum-type washing machine Flowchart of the drum-type washing machine Time chart of lily agitation of the same drum-type washing machine (a) Time chart of the washing process of the same drum type washing machine, (b) Other time chart of the same washing process

A first invention comprises a washing tub, a temperature detection means for detecting the temperature of washing water, and a control means for executing a washing process, and the time for the washing process is based on the temperature of the washing water detected by the temperature detection means. In addition to being variable, regardless of the length of time of the washing process, the washing machine force is approximately the same.

As a result, a stable washing machine force can be realized regardless of the washing conditions.

In a second aspect, in particular, in the first aspect, the washing machine has a laundry amount detecting means, and varies the washing process time based on the amount of laundry and the temperature of the washing water. As a result, a stable washing machine force can be realized regardless of the washing conditions.

In a third invention, particularly in the first or second invention, the washing process comprises a weak washing process in which washing machine force is suppressed and a main washing process in which washing is accelerated. As a result, a stable washing machine force can be realized regardless of the washing conditions.

In the fourth invention, particularly, the weak washing process of the third invention is provided prior to the main washing process. Thereby, a high cleaning effect can be realized.

5th invention has a heating means which heats wash water especially in 3rd or 4th invention, and heats wash water by a weak washing process. Thereby, a high cleaning effect can be realized.

According to a sixth invention, particularly in the fifth invention, when the washing water temperature in the weak washing process reaches a predetermined temperature or higher, the weak washing process is shifted to the main washing process. Thereby, a high cleaning effect can be realized.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described with reference to the drawings. It should be noted that the present invention is not limited by this embodiment.

(Embodiment 1)
FIG. 1 is a schematic configuration diagram of a drum-type washing machine according to a first embodiment of the present invention, and FIG. 2 is a block diagram of the same drum-type washing machine.

1 and 2, a water tank 3 is elastically supported in a housing 1 by a damper 2 or the like. A bottomed cylindrical drum 4 is rotatably provided in the water tank 3, and a rotating shaft 4a of the drum 4 is supported so as to be tilted forward and upward at an angle θ. In this embodiment, the angle θ is set to 5 to 20 degrees, for example. A hot water heater 18 for heating the washing water is arranged at the bottom of the water tub 3 .

A door 27 that can be freely opened and closed is provided on the front surface of the housing 1 , and by opening the door 27 , clothes can be taken in and out through an opening 7 provided on the front side of the drum 4 .

A plurality of baffles 5 projecting inward toward the center of rotation of the drum 4 and a large number of small holes 6 communicating with the inside of the water tank 3 are provided on the peripheral side surface of the drum 4. Clothes and the like are provided on the front side. An opening 7 is provided for loading and unloading laundry (hereinafter referred to as clothes). A balancer 8 is annularly formed around the opening 7 so as to surround the opening 7 , and the balancer 8 reduces vibrations caused by unevenness of clothes when the drum 4 rotates.

A motor 9 for rotating the drum 4 is attached to the rear surface of the water tank 3 . The motor 9 is composed of a brushless direct current motor, and its rotation speed can be freely changed by inverter control. In addition, the structure which the motor 9 is connected with the drum 4 through a belt may be sufficient.

A water supply valve 10 as water supply means is provided in a water supply pipe 11 . Washing water supplied from a water supply valve 10 passes through a detergent case 12 provided in a water supply pipe 11 and into which detergent is introduced, passes through a water supply path 13, and is supplied from a water supply port 14 into a water tank 3. - 特許庁Washing water supplied into the water tub 3 flows into the drum 4 through the small holes 6 .

A drain port 17 is provided at the bottom of the water tank 3 , and a drain path 16 is connected to the drain port 17 . The drainage path 16 is provided with a drainage valve 15 as drainage means, and the washing water in the water tank 3 is discharged out of the machine through the drainage path 16 by the drainage valve 15 .

During the washing process, the drainage valve 15 is closed, the circulation path 20 and the drainage path 16 are communicated via the circulation pump 19 , and the circulation pump 19 is operated to discharge washing water into the drum 4 through the discharge port 21 . A plurality of discharge ports 21 are formed in the circumferential direction of the water tank 3 .

A control means 22 is provided in the housing 1, and the control means 22 drives the motor 9, the water supply valve 10, the drain valve 15, the circulation pump 19, the hot water heater 18, etc., and performs each process such as washing, rinsing, and dehydration. Sequential control.

The control means 22 controls the output of the cloth amount detection means 23 for detecting the amount of clothes thrown into the drum 4, the output of the water level detection means 24 for detecting the amount of washing water supplied to the water tub 3, and the drum. 4 and the output of the water temperature detecting means 26 for detecting the temperature of the wash water supplied to the water tank 3 are inputted.

In this embodiment, the water temperature detection means 26 is composed of a thermistor and provided near the drain port 17 provided at the bottom of the water tank 3 . The water temperature detection means 26 detects the temperature of the wash water supplied at the start of the washing process, and outputs it to the control means 22 as an electric signal.

With respect to the drum-type washing machine configured as described above, the control of the fashionable clothes washing course will be described below. This fashionable clothes washing course can reduce the damage to the cloth of the clothes regardless of the washing conditions and achieve a high washing effect.

FIG. 3 is a flow chart of a fashionable clothes washing course according to the embodiment of the present invention, which mainly describes the washing process. FIG. 4 is a time chart of sway stirring of the drum-type washing machine, FIG. 5(a) is a time chart of the washing process of the drum-type washing machine, and FIG. 5(b) is another time chart of the washing process. is.

In FIG. 3, first, the user loads clothes into the drum 4 to start (step S1). The amount of laundry in the drum 4 is detected by the laundry amount detection means 23 (step S2), and the operation display unit 28 displays the water level corresponding to the amount of laundry, the amount of detergent relative to the amount of water at the water level, and the remaining washing time. (Step S3).

When the displayed amount of detergent is put into the detergent case 12 (step S4), the water supply valve 10 operates to start supplying water, and tap water is supplied into the water tub 3 together with the detergent in the detergent case 12 (step S5). ).

In step S5, the temperature of tap water to be supplied is detected by the water temperature detection means 26, and the operating time of the washing process is set according to the amount of water corresponding to the amount of clothes detected in step S2 and the temperature of the tap water. The more laundry is supplied, the more washing water is supplied, and it takes time to raise the temperature of the washing water to a predetermined temperature. set. In addition, if the temperature of the tap water is low, it takes time to raise the temperature of the washing water to a predetermined temperature. set short. The run time for the washing process is determined by a combination of both the amount of cloth and the temperature of the tap water.

In this embodiment, the operating time of the washing process is set according to the amount of water corresponding to the amount of laundry and the temperature of the tap water. The operation time of the washing process may be set according to the amount of water corresponding to the amount of cloth and the temperature of the tap water. In this configuration, if the inside temperature of the tub is low, it takes time to raise the temperature of the washing water to a predetermined temperature. is set as short as The operating time of the washing process is determined by a combination of the bath temperature, the amount of water corresponding to the amount of laundry, and the temperature of the tap water.

In the water supply process, the drum 4 rotates at a low speed in order to improve the balance of the laundry in the drum 4 and promote the dissolution of the detergent (step S6). After that, water is supplied to make up for the lowered water level that has permeated the laundry (step S7). At the same time, the circulation pump 19 is intermittently driven, and the washing water in the water tank 3 is jetted out from the outlet 21 of the water tank 3 toward the laundry in the drum 4 as circulating water. The circulation pump 19 is appropriately driven during the washing process and the rinsing process. After a predetermined amount of water is supplied, the weak washing process is performed (step S8).

In the weak washing step (step S8), the hot water heater 18 is turned on when the water level reaches the water level rank for turning on the hot water heater 18 . In the weak washing process, the drum 4 is mainly swayed at an angle of less than 150 degrees, and the drum 4 is intermittently rotated one or more times for tumble agitation.

Here, the tumble agitation is performed at such a rotational speed that the clothes do not stick to the inner wall of the drum 4 . That is, when the drum 4 rotates, the clothes are lifted by the baffle 5, and the washing is performed at a rotation speed at which the clothes are washed down from the top to the bottom.

Yuri agitation is agitation in which the drum 4 is oscillated at an angle that does not hit and wash the clothes, and in the present embodiment, the drum 4 is oscillated at an angle of less than approximately 150 degrees.

FIG. 4 is a time chart showing an example of yuri agitation according to the present embodiment. The drum 4 is rotated to a position where the clothes are positioned downward by the dead weight of the clothes. After a predetermined time (time b in the figure) has passed, the drum 4 is rotated in the opposite direction (time a in the figure), the motor 9 is stopped, and the weight of the unbalanced clothes causes the drum 4 to move to the lower position. Rotate drum 4 to position.

The yuri agitation is an operation in which this is repeated, and by swinging the drum 4, the washing water hitting the clothes rubs and washes the clothes, and the washing machine force applied to the clothes can be reduced.

In this embodiment, the rotation time a of the drum 4 in FIG. 4 is substantially constant. Time a is substantially constant.

The stationary time b in FIG. 4 is changed according to the operating time of the weak washing process, which is set according to the amount of cloth and the temperature of the tap water. That is, when the operation time of the weak washing process is long, the rest time b is set long according to the operation time, and when the operation time of the weak washing process is short, the rest time b is set short according to the operation time. be done.

As a result, the number of times the drum 4 is oscillated is constant regardless of the length of the operation time of the weak washing process, so that the washing machine force applied to the clothes can be made almost constant, and damage to the clothes can be minimized. can be made constant.

FIG. 5(a) is a time chart showing an example of the washing process according to the present embodiment, showing a washing process in which only stirring is performed in the weak washing process. Since only Yuri agitation is performed, the washing machine force applied to the clothes can be reduced, and damage to the clothes can be suppressed. The clothes are kneaded and washed, and regardless of the length of operation time in the washing process, the washing machine force applied to the clothes can be made substantially constant, and the damage to the clothes can be made constant.

FIG. 5(b) is a time chart showing another example of the washing process of the present embodiment, showing a washing process in which tumble agitation is performed in the first half of the weak washing process and only yuri agitation is performed in the second half. The length of the first half of tumble stirring is constant, and the length of the washing process is adjusted in the second half of the weak washing process. By performing tumble stirring in the first half of the weak washing process, the solubility of the detergent can be improved, and the penetration of the detergent ingredients into the clothes can be improved, thereby improving the washing performance. In this washing process, tumble agitation is performed in the first half of the weak washing process, but since tumble agitation is performed a small number of times, damage to the clothes can be suppressed. In this washing process as well, regardless of the length of operation time of the washing process, the washing machine force applied to the clothes can be made substantially constant, and the damage to the clothes can be made constant.

The time charts shown in FIGS. 5(a) and 5(b) show an example of the washing process of this embodiment, and do not limit the present invention.

Here, the washing machine power refers to the washing machine power specified in JIS L1930 based on the handling pictograms of the clothes targeted by the fashionable clothes washing course of the present embodiment, and the predetermined value of the washing machine power means the handling Refers to the mechanical force specified in the pictogram.

In this embodiment shown in FIG. 5(a), the number of times the drum 4 is oscillated and the rotation time a are constant regardless of the length of the operation time. The length of the operation time may be changed while the time b is constant. Even with this configuration, the clothes are rubbed and washed with washing water by the swinging of the drum 4, so that the mechanical force applied to the clothes is reduced, and damage to the clothes can be suppressed. Moreover, when the operating time is lengthened, both the number of times the drum 4 is oscillated and the stationary time b may be increased. Even with this configuration, the same effect can be obtained.

Alternatively, instead of the yuri agitation, the circulation pump 19 may be intermittently driven while the drum 4 is stopped. In this configuration, since the clothes are kneaded and washed by the circulating washing water, the mechanical washing force applied to the clothes can be reduced and damage to the clothes can be suppressed, as in the case of the Yuri Agitation. A configuration may be employed in which lily agitation and driving of the circulation pump 19 are combined.

In these washing processes, regardless of the length of operation time of the washing process, the washing machine force applied to the clothes can be made substantially constant, and the damage to the clothes can be made constant.

When the water temperature detection means 26 detects that the washing water temperature has reached a predetermined temperature or higher (step S10), the process proceeds to the main washing step (step S11). In this embodiment, the predetermined temperature is set at 37°C. For example, 90% of sebum melts and becomes liquid at about 37°C, and detergent enzymes are activated at about 37°C. A high cleaning effect can be expected by suppressing the force.

In the main washing step (step S11), intermittent tumble agitation is performed when sebum is easily removed effectively by the effect of warm water. When the washing water temperature reaches about 40°C, the hot water heater is intermittently turned on to maintain about 40°C (step S12).

After a predetermined period of time has elapsed from the main washing step (step S11), the washing step ends.

In the next step, the rinsing (1) step (step S13), the drain valve 15 is opened to drain the water in the water tank 3, and then intermediate dehydration is performed to apply centrifugal force to the laundry to remove moisture from the laundry. , the water is supplied to the washing water level, the motor 9 is driven, and the rinsing agitation for discharging the washing liquid from the laundry is started.

After performing rinsing and agitation for a predetermined time, the water in the water tank 3 is drained, dehydration is performed, and the rinsing (1) step is completed.

In the rinsing (2) step (step S14), that is, in the final rinsing step, drainage and intermediate dehydration are performed in the same manner as in the rinsing (1) step, and after that, rinsing and agitation are started.

After the rinsing (2) step (step S14) is completed, the process proceeds to the dehydration step (step S15).

In the dehydration step (step S15), after the rinsing (2) step is completed, the drain valve 15 is opened to drain the water in the water tank 3, and then the motor 9 is driven to rotate the drum 4 at high speed to centrifuge the laundry. A force is applied to separate the moisture from the laundry for a predetermined period of time, and the fashionable clothes washing course is completed.

Although the present embodiment described above has been described based on a drum-type washing machine, it may be adopted for a vertical washing machine. In the vertical washing machine, when performing the fashionable washing course, instead of lily agitation, soak and wash, or pass-through washing that rotates the washing tub in one direction at high speed, and instead of tumble agitation It may be configured so as to perform reversal agitation in which the washing tub is reversed forwards and backwards.

Also, although a heater is used as means for heating the washing water, other heating means such as an IH may be used instead of the heater.

As described above, the washing machine according to the present invention can suppress the washing machine force within a predetermined range and achieve stable washing regardless of the washing conditions such as the washing water temperature and the amount of laundry. It can also be applied to applications such as other washing machines having a fashionable course and a soaking course.

REFERENCE SIGNS LIST 1 housing 2 damper 3 water tank 4 drum 5 baffle 6 small hole 7 opening 8 balancer 9 motor 10 water supply valve (water supply means)
11 water supply pipe 12 detergent case 13 water supply path 14 water supply port 15 drain valve (drainage means)
16 Drain Path 17 Drain Port 18 Hot Water Heater 19 Circulation Pump 20 Circulation Path 21 Discharge Port 22 Control Means 23 Cloth Amount Detection Means 26 Water Temperature Detection Means

Claims (5)

a washing tub for storing clothes;
a motor for rotating the washing tub;
a control means for performing the washing process;
and a heating means for heating the washing water,
The control means includes, in the washing process, a weak washing process of heating the washing water until the temperature of the washing water reaches a predetermined temperature, and a main body provided after the weak washing process and finished after a predetermined time. Execute the washing process and, in order,
In the weak washing step, executing a weak washing operation for controlling the motor so that the rotation of the washing tub does not rotate the washing tub at an angle of approximately 150 degrees or more ,
In the main washing step, performing a main washing operation of controlling the motor so that the clothes are dropped from the top to the bottom of the washing tub by the rotation of the washing tub,
time-variably controlling the weak washing operation;
washing machine. a laundry amount detecting means for detecting the amount of laundry in the washing tub; and a temperature detecting means for detecting the washing water temperature;
The control means sets the washing process time based on the amount of laundry detected by the laundry amount detection means and the washing water temperature detected by the temperature detection means,
The time for the washing process is set longer as the amount of cloth increases,
The main washing operation is fixed in time,
The washing machine according to claim 1. The weak washing step includes the weak washing operation and a stirring operation of intermittently rotating the washing tub at a rotation speed at which the clothes drop from the top to the bottom of the washing tub,
The control means controls the stirring operation at a fixed time.
The washing machine according to claim 1 or 2. The weak washing operation is yuri agitation that rocks the washing tub at an angle of less than approximately 150 degrees.
The washing machine according to any one of claims 1-3 . The washing step is part of a fashion wash course,
The washing machine according to any one of claims 1-4 .

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