JP4575438B2 - Water supply control method and apparatus for washing machine - Google Patents

Description

  The present invention relates to a washing machine, and more particularly to a fully automatic washing machine equipped with a heater so that water supply is controlled in multiple stages so that the heater and pulsator are driven in a state where the washing water reaches a predetermined water temperature. The present invention relates to a water supply control device and a control method for a washing machine that minimizes power consumption and at the same time enhances washing power.

  In general, a washing machine is a home appliance in which water is washed, washed and rinsed, and a laundry is sequentially washed by a program in which a dehydration process is set.

  The conventional general washing machine uses room-temperature washing water in which the washing water necessary for washing is supplied directly through the water pipe, so that the washing water temperature is low and the detergent will not be diluted smoothly. Stained stains on objects have the disadvantage that they cannot be washed cleanly. Therefore, recently, in order to solve the above-mentioned problems, a heater is installed at the bottom of the washing tub, and the washing water is heated at a predetermined temperature using the heat generated by the heater, so that the detergent is completely removed. Improved so that the laundry can be washed clean at the same time as it is diluted.

  However, in the case of a washing machine equipped with a heater as described above, water is supplied up to the water temperature set according to the course selected by the user, so that the heater is continuously driven from the initial stage of water supply, resulting in a large amount of power consumption. Have

  In addition, the washing machine according to the prior art has a problem in that the washing power is reduced because only heating is performed without the washing operation while the heater is driven in the water supply process.

  The present invention has been proposed in order to solve the above-mentioned problems. The water supply process is performed in multiple stages so that the temperature of the washing water supplied to the water tank reaches a predetermined temperature. It is an object of the present invention to provide a water supply control device and control method for a washing machine that can minimize power consumption by driving a heater.

  Also, during the water supply process, the pulsator can be driven simultaneously with the heater, so that the detergent contained in the washing water is not only completely dissolved but before the main washing starts. An object of the present invention is to provide a water supply control device and a control method for a washing machine so that fine washing can be realized.

The water supply control device of the washing machine according to the present invention for accomplishing the above-described object is configured such that a washing process is performed by a key input unit for inputting a washing condition and a course selected through the key input unit. A controller for controlling so that only the hot water is supplied after the cold water and the hot water are simultaneously supplied during the water supply process, a heater for heating the washing water according to a control signal of the controller, and a control of the controller A pulsator that is agitated by a signal is included. The heater is driven when only warm water is supplied so that the time to reach the set water temperature is shortened. The heater and pulsator are driven after the washing water reaches a predetermined set water level when only warm water is supplied.

In addition, the water supply control method of the washing machine for achieving the purpose as described above is performed after the cold water and the hot water are simultaneously supplied so as to reach the water temperature set by the selected course at the stage where the washing conditions are input. The stage where only warm water is supplied to reach the set water level, and the heater and pulsator are driven simultaneously until the washing water reaches the set temperature in the process of supplying only warm water so that the time to reach the set water temperature is shortened A step in which the washing process is performed according to the selected course when the supply of the washing water is completed. In the stage where the heater and the pulsator are simultaneously driven, the heater and the pulsator are driven after the washing water reaches a predetermined set water level by supplying hot water.

According to another aspect of the present invention, there is provided a water supply control method for a washing machine in which a washing condition is input by a key input unit, an operation command is input by a key input unit, and cold water and hot water flow into the water tank at the same time. In the primary water supply stage, the secondary water supply stage where cold water supply is interrupted and only hot water is supplied, and in the secondary water supply stage, the heater and pulsator are driven until the temperature of the wash water in the water tank reaches the set temperature. Controlled stages are included. The stage in which the driving of the heater and the pulsator is controlled is driven after the washing water reaches a predetermined set water level by the secondary water supply.

  With the water supply control device and control method of the washing machine configured as described above, the heater is driven when the washing water reaches a predetermined temperature so that the washing water is supplied in multiple stages. By doing so, there is an effect that the amount of electric power consumed for driving the heater is reduced.

  Alternatively, the pulsator is driven at the same time as the heater is driven, so that the detergent is quickly dissolved, and fine washing is established before the main washing, whereby the washing power is enhanced.

  Alternatively, the washing time can be shortened by reducing the heating time required for the washing water to reach the set temperature by supplying the washing water in multiple stages and driving the heater at a predetermined time. is there.

  Hereinafter, specific embodiments of the present invention will be described in detail with reference to the drawings. However, the idea of the present invention is not limited to the embodiments presented, and other additions, changes, deletions, etc. of other components are included in the scope of the other inventions that are regressive and the idea of the present invention. This embodiment can be easily proposed.

  FIG. 1 is a block diagram showing a washing machine water supply control device according to the idea of the present invention.

  Referring to FIG. 1, a washing machine water supply control apparatus according to the present invention includes a key attraction unit (100) for a user to input a washing condition and select a washing course, and a water level according to the amount of clothes. Corresponding to the water level sensing unit (201), the water temperature sensing unit (202) for sensing the water temperature set by the course selected through the input unit (100), and the course selected through the input unit (100). The second subordinate is a control unit (300) so as to hold the process of the subordinate drive unit (500) for controlling the driving of the heater (600) and the motor (700) by the control signal of the control unit (300), and the above The display unit (800) displays an operating state according to a control signal from the control unit (300), and a memory (400) stores various reference values. More specifically, the control unit 300 controls the wash water temperature to reach the temperature set by the course selected by the user so that the wash water is supplied in multiple stages. Then, if the heater is driven in the water supply stage, the motor (700) is driven at the same time, and the pulsator (not shown) is controlled to be stirred at the same time.

  The operation of the water supply control device for a washing machine constructed as described above will be described as follows.

  First, if a user selects a desired washing course through the key input unit (100) and inputs an operation command, the control unit (300) outputs a control command so that a process is established by the selected course. To do.

  At this time, the controller 300 first senses the amount of clothing, and the water level is set according to the sensed amount of clothing, so that water supply is established at the water temperature set by the selected course. Control. Then, when the washing water reaches the set water temperature and the set water level, the supply of the washing water is interrupted, and the pulsator is driven in earnest to perform the washing process. When the washing process is completed, the washing water is discharged to the outside by the drain hose, and clean washing water is re-inflowed. When the washing water inflow is completed, the rinsing process is performed. When the rinsing is completed, the dehydrating process is performed and all the washing processes are finished.

  FIG. 2 is a graph showing a water supply process by a water supply control method for a washing machine according to the idea of the present invention.

  Referring to FIG. 2, the washing water is flowed in at least two stages according to the water supply control method of the washing machine according to the present invention. In each stage, hot water and cold water are selectively or simultaneously introduced.

  More specifically, cold water and hot water are simultaneously supplied in the primary water supply section (A), and only the hot water is supplied in the secondary water supply section (B), and then the heater (600) is selectively driven according to the water temperature. The pulsator (not shown) can be agitated by driving the motor (700) simultaneously with the driving of the heater (600). When the washing water reaches the set water temperature, the corresponding stroke is performed in the washing stroke section (C) without driving the heater (600).

  More specifically, if the user inputs the washing condition and presses the operation button, the washing water is introduced. Here, the primary water supply is performed up to a first set temperature preset by a control signal of the controller 300. At this time, cold water and hot water are supplied simultaneously.

  For example, when the set first set temperature is about 32 ° C., the primary water supply is terminated when the water temperature sensed through the water temperature sensing unit 202 is sensed as the first set temperature. When the primary water supply is completed, the cold water supply is stopped, and only the hot water is supplied up to the water level set by sensing the amount of clothing. Subsequently, if the water temperature sensed after the water supply is completed up to the set water level cannot reach the water temperature set by the selected course, the heater 600 is driven to reach the corresponding water temperature. Like that.

  On the other hand, if the heater (600) starts to be driven, the pulsator (not shown) can be agitated and driven simultaneously with the operation of the heater (600) so that the motor (700) is driven simultaneously. To control. In other words, when the primary water is supplied through the two-stage water supply, the detergent concentration is increased with a small amount of water to remove the primary contamination, and the heater (600) is driven by supplying only hot water during the secondary water supply. Let time be reduced. By supplying only warm water at the time of secondary water supply, the time until the temperature of the washing water reaches the set water temperature is shortened. Further, as described above, the washing water is supplied in multiple stages, so that the full power consumption is reduced. The washing power can be enhanced by driving the motor 700 while the heater 600 is driven.

  FIG. 3 is a flowchart showing a water supply control method for a washing machine according to the present invention.

  Referring to FIG. 3, the user first inputs a power-on command (S110) and selects a washing course (S120). At this time, the temperature of the washing water is set according to the selected washing course. If the user inputs an operation command (S130), the primary water supply is performed (S140). Here, cold water and hot water are simultaneously established between the primary water supply. Here, it is desirable that the amount of washing water supplied at the time of primary water supply, that is, the first set water level is automatically set by a program.

  Alternatively, it is determined whether or not the washing water has reached the first set temperature in the primary water supply process (S140) (S150). If it is determined that the washing water temperature has reached the first set temperature, secondary water supply is started (170). On the other hand, if the first set water temperature is not reached in the process of determining whether or not the first set temperature has been reached, it can be determined whether or not the wash water level has reached the first set water level (S160). When the first set water level is reached, the secondary water supply can be started so that the primary water supply ends regardless of whether or not the wash water has reached the first set water level. Conversely, when it is determined that the first set water level has not been reached, the primary water supply can be continuously performed.

  On the other hand, unlike the case of primary water supply, only warm water is supplied in the secondary water supply process. More specifically, it is determined whether or not the second set water level has been reached in the secondary water supply process (S180). If it is determined that the second set water level has been reached, it is determined whether the wash water has reached the second set temperature (S190). If it is determined that the washing water has reached the second set water temperature, the washing process is performed according to the set course (S220). On the contrary, if it is determined that the washing water has not reached the second set water temperature, the heater is controlled to be driven (S200). At this time, the pulsator is controlled to be agitated together with the heater being driven (S210). Here, the heater and the pulsator are driven until the washing water reaches the second set temperature. When the washing water reaches the second set temperature, the heater is stopped and the pulsator is controlled to be driven in earnest. Here, when the washing water reaches the second set temperature, the driving of the heater and the pulsator can be stopped, and the pulsator can be controlled to be driven again during the washing process. Then, washing and rinsing dehydration processes are performed according to the set course, and all processes are completed when all the processes are performed.

  According to the water supply control device and control method for a washing machine according to the present invention having the above-described configuration, the amount of power consumed to drive the heater is reduced, and the time required for the washing water to be heated to the set temperature is reduced. The industrial applicability is very high.

The block diagram which shows the washing machine water supply control apparatus by the thought of this invention. The graph which showed the water supply process by the water supply control method of the washing machine by the thought of this invention. The flowchart which showed the water supply control method of the washing machine by this invention.

Claims (12)

A key input unit for inputting washing conditions;
A control unit for controlling the washing process to be performed according to the course selected through the key input unit, and controlling so that only the hot water is supplied after the cold water and the hot water are simultaneously supplied during the water supply process;
A heater for heating the washing water according to a control signal of the control unit;
A water supply control device comprising: a pulsator that is agitated and driven by a control signal of the control unit;
The heater is driven when only hot water is supplied so that the time to reach the set water temperature is shortened .
The water supply control device for a washing machine, wherein the heater and the pulsator are driven after the washing water reaches a predetermined set water level when only warm water is supplied .   The water supply control device for a washing machine according to claim 1, wherein the heater and the pulsator are driven simultaneously. A stage where laundry conditions are entered;
Cold water and hot water are supplied simultaneously to reach the water temperature set by the selected course, and then only hot water is supplied to reach the set water level;
A step of simultaneously driving the heater and the pulsator until the washing water reaches the set temperature in the process of supplying only the hot water so that the time to reach the set water temperature is shortened;
When the washing water supply is completed, the washing process is performed according to the selected course;
In the water supply control method of the washing machine including
Water supply for a washing machine , wherein the heater and the pulsator are driven after the washing water reaches a predetermined set water level by supplying hot water when the heater and the pulsator are simultaneously driven. Control method.   The water supply control method for a washing machine according to claim 3, wherein in the step of supplying the cold water and the hot water simultaneously, the supply is interrupted when the set water level is reached even if the wash water does not reach the set temperature. .   The water supply control method for a washing machine according to claim 3, wherein the driving of the heater is interrupted when the washing process is performed. A step in which washing conditions are input by a key input unit;
A step in which an operation command is input by a key input unit;
A primary water supply stage in which cold water and hot water flow into the water reservoir at the same time;
A secondary water supply stage in which the cold water supply is interrupted and only hot water is supplied;
In the secondary water supply step, the driving of the heater and the pulsator is controlled until the temperature of the washing water inside the water tank reaches a set temperature;
In the water supply control method of the washing machine including
The water supply control method for a washing machine, wherein the driving of the heater and the pulsator is controlled after the washing water reaches a predetermined set water level by the secondary water supply . The primary water supply step senses the temperature of the wash water to be supplied and determines whether the set temperature has been reached;
The method of controlling water supply for a washing machine according to claim 6, further comprising the step of sensing whether the water level of the wash water to be supplied has reached the set water level.   8. The water supply control method for a washing machine according to claim 7, wherein if it is determined that the washing water has reached a set temperature or a set water level, the supply of cold water is interrupted. Determining whether the second water supply stage has reached a predetermined set water level;
The water supply control method for a washing machine according to claim 6, further comprising a step of determining whether or not the temperature reaches the set temperature if it is determined that the predetermined set water level has been reached.   The water supply control method for a washing machine according to claim 6, wherein the heater is stopped when a washing process starts.   7. The water supply control method for a washing machine according to claim 6, wherein the pulsator is stopped when the washing water reaches a final set temperature and then driven again when the washing process starts.   The water supply control method for a washing machine according to claim 6, wherein the pulsator continues to operate even after water supply is completed.

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