JPH0761396B2 - Washing machine water supply control device and method - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water supply control device for a washing machine and a method thereof, and more particularly to a cold temperature for washing laundry by using washing water heated by a heater or hot water provided from the outside. In a water washing machine, by adjusting the temperature of the washing water to a predetermined value or lower,
Of the washing machine to be able to adjust the amount of
The present invention relates to a water supply control device.

[0002]

In general, in the washing <br/>濯機having such structure is shown in FIG. 1, the washing water is filled in the pressure vessel 6a to the water supply process is provided on the lower surface portion of the washing tub 6 to be carried out As a result, the amount of washing water supplied is adjusted by utilizing the principle that the air pressure in the hose 6b changes.

That is, the result of measuring the air pressure transmitted through the hose 6b of the pneumatic container 6a by the water level sensing means 2 is provided to the microcomputer, so that the microcomputer can supply the amount of washing water supplied to the washing tub 6. Adjust .

[0004]

However, conventionally, even if the supplied washing water is hot water or cold water is supplied, a heater included in a washing machine for washing with hot water is conventionally used. When cold water was heated using (not shown), the air pressure provided to the water level sensing means 2 through the hose 6b was changed, and the current amount of washing water could not be sensed accurately.

[0005]

SUMMARY OF THE INVENTION Accordingly, the present invention has been devised in order to solve the above-mentioned various drawbacks, and the present invention provides: when the temperature of the washing water supplied to the washing tub is above a certain value.
By the temperature of the cooling water is supplied washing water is set to be a predetermined value or less, the amount of washing water to accurately detect, provide a water supply control apparatus and method of a washing machine to precisely control the water supply amount The purpose is to do.

[0006]

In order to achieve the above object, a water supply controller for a washing machine according to the present invention controls a whole washing machine control system to perform various functions related to washing. When, it is controlled by the microcomputer, and air pressure vessel to produce the air pressure by the washing water supplied to the washing tub, or the air pressure vessel
A water level sensing means for generating data corresponding to a predetermined air pressure is al provided, actuated by the microcomputer is controlled heater drive for causing the drive moving the heater for heating the supplied to the washing tub of cold water washing water Bei and means
In the water supply control apparatus of the example was a washing machine, communicating with the washing tub together is disposed Migihitsuji covering the outer wall of the pneumatic chamber
Cooling water duct , cooling water valve for adjusting the amount of cooling water supplied into the cooling water duct , first temperature sensing means for measuring the temperature of the pneumatic container, and supply to the washing tub
Second temperature sensing means for measuring the temperature of the washing water heated by the hot water or the heater is, and the first, the opening and closing of the cooling water Bal <br/> blanking the temperature data measured by the second temperature sensing means characterized the this <br/> and a cooling water valve control means for controlling.

On the other hand, the method of controlling the water supply of the washing machine of the present invention
It includes a washing water supply step for supplying washing water to the washing tub by operating the valve, contact the above washing water supply step
A hot water determination step for determining whether or not the washing water supplied to the washing tub is hot water, and if it is determined to be hot water in the hot water determination step, the cooling water valve is operated to supply cooling water. a step, when the washing water supplied in the cooling water supply step and the washing water supply step is supplied to the selected water level, the washing step after stopping the supply of the washing water, which heats the washing water to a certain temperature, washing When, characterized in that it comprises a drainage step of draining by supplying cooling water as a means to lower the temperature of the washing water after washing completion of the laundry in the washing step.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in more detail below with reference to the drawings . In FIG. 2, reference numeral 3 is a first temperature sensing means for measuring the temperature of the pneumatic container 6a, 4 is a second temperature sensing means for measuring the temperature of the washing water in the washing tub, and 5 is a temperature sensing means. To lower the temperature in the pneumatic container 6a
A cooling water duct for supplying cooling water to the washing tub 6 is a cooling water valve 1 which is operated by a cooling water valve control means 9 described later and supplies cooling water to the cooling water duct 5.

In FIG. 3, the water level sensing means 2 senses the amount of washing water by the air pressure transmitted through the hose 6b shown in FIG. 2 and applies the corresponding data to the input port 11 of the microcomputer 10. The first and second temperature sensing means 3 and 4 are connected as shown in FIG.
To the temperature measured are respectively mounted on the outer wall of the pneumatic chamber 6a washing tub 6, and is connected to provide the input port 13 and 12 of the microcomputer 10 as shown in FIG.

On the other hand, the water supply valve control means 7 and the cooling water valve control means 9 are connected to the output ports 03 and 01 of the microcomputer 10 as shown in FIG. 3, and the water supply valve (not shown) and the cooling water valve 1 are connected. The heater driving means 8 is connected to the output port 02 of the microcomputer 10 to control the operation of the heater (not shown).

The operation process of the water supply control device for a washing machine having the above construction will be described in detail below with reference to the flow chart shown in FIG. When the user operates the washing machine adopting the present invention, the microcomputer 10 controls the water supply valve control means 7 to open the water supply valve to supply the washing water to the washing tub 6 as in step S1.

In this case, the user wants to wash with warm water.
No case, open the hot water valve (not shown), in the case of overlooking the washing by cold water open the cold water valve (not shown).

When the washing water supplied from step S1 is hot water, the air pressure is higher than that of cold water having the same water level . Therefore, in order to sense the correct level, but washing water to the second temperature sensing means 4 is supplied to the washing tub 6 is determined whether a cold or a hot water in the step S2, step if not heated Proceed to S4 to continue supplying water up to the selected water level . In the case of hot water, the hose 6b depends on the temperature of the washing water supplied to the washing tub 6.
Since an error occurs in the air pressure transmitted to the water level sensing means 2 through the cooling water valve 1, the cooling water valve 1 is operated to supply the cooling water to the washing tub 6 as in step S3. At this time, it is supplied
The cooling water is, as shown in FIG. 2, the pneumatic container 6a.
Through the cooling water duct 5 arranged so as to cover the
Temperature of the washing water in the washing tub
And the temperature inside the pneumatic container 6a is below a predetermined value.
It is said that As a result, from the pneumatic container 6a to the hose 6b
The air pressure provided to the water level sensing means 2 through
Since the water level in the tank 6 is accurately reflected,
Accurately measure the water level in 6 by the water level sensing means 2.
You can

When step S3 is completed, step
Water is supplied up to the water level selected in S4. When the user selects warm water washing,
In S5, the microcomputer 10 is the heater driving hand.
Step 8 is controlled, the heater is operated to heat the washing water, and
Wash with water.

Washing with warm water is performed at a predetermined temperature (for example, 9
The temperature is 0 ° C., 60 ° C., 30 ° C., etc., and the microcomputer 10 adjusts the heat generation amount of the heater according to the selected temperature. When the washing water is heated in step S5, the process proceeds to step S6 to determine whether or not the washing is completed.
And, finished washing by warm water Then, to supply additional wash water to the washing tub 6 by actuating the cooling water valve 1 controls the water supply valve control unit 7 as in step S7
It

The reason is that the water in the washing tub 6 is heated.
Once drained state, the user burns by hot water under
Because there is a risk that While performing the additional water supply, the microcomputer 10 determines the temperature of the pneumatic container 6a through the first temperature sensing means 3 as in step S8. For example, if the temperature is 20 ° C. or higher, the process proceeds to step S9 and the cooling water valve 1 After supplying the cooling water to the washing tub 6 by activating the above, whether additional water supply is completed in step S10
To determine. On the other hand, if the temperature determined in step S8 is 2
If the temperature is 0 ° C. or lower, the process proceeds to step S10, and it is determined whether or not the additional water supply is completed.

After the additional water supply is completed in step S10,
If not, the process returns to step S7, and when the additional water supply to the predetermined water level is completed, additional washing is performed in step 11, and then the process proceeds to step 12 to drain after washing.

[0018]

According to the present invention which operates as described above,
Even pressure as the temperature of the washing water is changed can be accurately detected by the water level detecting means wash water level by giving making normal state, it is possible to supply additional coolant further after washing, the user by draining hot water Burns
The excellent effect of being able to prevent

[Brief description of drawings]

FIG. 1 is a schematic view of a conventional washing machine structure.

FIG. 2 is a simplified view of a washing machine structure according to the present invention.

FIG. 3 is a block diagram of a washing machine water supply control device according to the present invention.

FIG. 4 is a flowchart illustrating the operation of the washing machine water supply control device according to the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Cooling water valve 2 Water level sensing means 3 1st temperature sensing means 4 2nd temperature sensing means 5 Cooling water duct 6 Washing tank 6a Air pressure container 6b Hose 7 Water supply valve control means 8 Heater drive means 9 Cooling water valve control means 10 Microcomputer

Claims (2)

[Claims] 1. A microcomputer that controls the entire washing machine control system to perform various functions related to washing, and a pneumatic container that is controlled by the microcomputer and that generates air pressure by the washing water supplied to the washing tub. When the water level sensing means for generating data corresponding to a predetermined air pressure provided from said pressure vessel, operated by the microcomputer is controlled, subjected to the washing tub
In the water supply control apparatus for a washing machine having a heater driving means for driving movement of the heater for heating the sheet by cold water washing water is disposed in Migihitsuji covering the outer wall of the pneumatic chamber
A cooling water duct communicating with the washing tub together with the cooling water bar <br/> Lube for adjusting the amount of cooling water supplied to the cooling water duct, a first temperature sensing means for measuring the temperature of the air pressure container It is measured second temperature sensing means for measuring the temperature of the washing water heated by the hot water or the heater supplied to the washing tub, and the first, the second temperature sensing means
Water supply control apparatus for a washing machine, characterized in that it comprises a cooling water <br/> valve control means for controlling the opening and closing of the cooling water valve with temperature data. 2. A washing water supply step for supplying washing water to the washing tub by operating the valve, and hot water determination step of the washing water supplied to the washing tub in the washing water supply step, it is determined whether the warm water When it is determined that the hot water in the hot water determination step, selecting a cooling water supply step for supplying cooling water to activate the cooling water valve, the washing water supply step and the washing water supplied in the cooling water supply step When supplied to the water level, supply of washing water
After interrupting the supply, the washing water is heated to a certain temperature, a washing step of washing, by supplying cooling water as a means to lower the temperature of the washing water after washing completion of the laundry in the washing step to drain waste water water supply control method of a washing machine, characterized in that it comprises a step.