KR950004284B1 - Washing machine of supplying water control device - Google Patents

Abstract

The apparatus comprises a cooling duct (5) covering the pneumatic vessel (6a), a cooling valve (1) controlling the flow amount of the cooling water from the cooling duct (5), a first temperature sensor (3) detecting the temperature in pneumatic vessel (6a) to produce an air pressure by the flow of washing water, a second temperature sensor (4) detecting the temperature of the washing water, and means (9) controlling the cooling valve (1) according to the data provided from the first and second temperature sensors (3,4).

Description

Water supply control device and method of washing machine

1 is a view schematically showing the structure of a conventional washing tank.

2 is a view briefly showing the structure of a washing tank according to the present invention.

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

4 is a flowchart for explaining the present invention.

* Explanation of symbols for the main parts of the drawings

1: cooling valve 2: water level detection means

3: first temperature sensing means 4: second temperature sensing means

5: cooling tube 6: washing tub

6a: Pneumatic container 6b: Hose

7: water supply valve control means 8: heater driving means

9 cooling valve control means 10 microcomputer

The present invention is to compensate for the water level measurement error according to the temperature of the washing water in the washing machine combined with cold or hot water washing the clothes using the washing water heated by cold water or a heater (heater) or hot water provided from the outside so that accurate water supply is made It relates to a water supply control device and a method thereof.

The conventional washing machine is a water supply process is performed, as shown in Figure 1, the air pressure in the hose (hose: 6b) as the washing water is filled in the pneumatic vessel (6a) installed on the lower side of the washing tank (6) This changing principle is used to control the amount of wash water supplied.

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 washes water flowing into the washing tank 6. The amount of was adjusted.

However, in the related art, when the supplied washing water is cold water or hot water, and even when cold water is supplied, a hose is used to warm the cold water by using a heater (not shown) equipped with a washing machine to boil the washing water. Through 6b, the air pressure provided to the water level detecting means 2 was changed to accurately detect the current amount of washing water.

Accordingly, an object of the present invention is to provide an apparatus and method for accurately controlling the amount of water to be washed by the current amount of washing water regardless of the temperature change of the washing water due to heating.

In order to achieve the above object, the water supply control apparatus of the present invention includes a microcomputer controlling the whole washing machine control system to perform various functions related to washing, and washing water controlled by the microcomputer and introduced into a tub. An air pressure tank for generating air pressure by the air, a water level sensing means for generating data corresponding to a predetermined air pressure processed through the hose from the air pressure container, and a heater for washing cold water A heater driving means for driving the engine, a cooling tube surrounding the outer wall of the pneumatic container, a cooling valve for adjusting the amount of cooling water flowing into the cooling tube, and a first temperature for measuring the temperature of the pneumatic container. Temperature sensing means, and for measuring the temperature of the washing water heated by the hot water or the heater introduced into the washing tank And a cooling valve control means for controlling the opening and closing of the cooling valve in accordance with the second temperature sensing means and the data provided from the first and second temperature sensing means.

The method of the present invention to control the supply of the washing water to the washing tank of the cold and hot water washing machine is to open the cold water valve or hot water valve to supply the washing water to the washing tank, and whether the supplied septic water is hot water (approximately 50 ° C. or more). And if it is excellent, open the cooling valve and supply the cooling water to the cooling pipe. Performing washing when water supply is completed to a predetermined level, performing additional water supply to lower the temperature of the washing water when washing is completed, and determining whether the temperature of the pneumatic container is above a predetermined temperature. If the temperature is greater than or equal to the step of supplying the cooling water to the cooling tube to open the cooling tube, and performing additional washing after the additional water supply is complete washing. Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

Figure 2 shows the structure of the laundry according to the present invention, reference number 3 shows a first temperature sensing means for measuring the temperature of the pneumatic container (6a), 4 is for measuring the temperature of the washing water in the washing tank The second temperature sensing means, 5 represents a cooling tube for lowering the temperature of the heavy air in the pneumatic container 6a, and the above-described 1,2,6b perform the same or similar functions as those shown in FIG. Part is shown.

3 is a water supply control system for a washing machine including the present invention, in which reference numeral 2 denotes water level sensing means for detecting an amount of washing water by air pressure transmitted through a roll of a hose 6b, and 2 and 3 First and second temperature sensing means. 7 is a water supply valve control means, 8 is a heater driving means, 9 is a cooling valve control means, and 10 is a microcomputer.

3 is a flowchart illustrating the operation of the present invention.

The operation of the present invention will be described in detail with reference to FIGS. 2 through 5 outlined above. When the user operates the washing machine, the microcomputer 10 controls the water supply valve control means 71 to open the water supply valve (not shown) so that the washing water is provided into the washing tank 6 (11). Boiling washing, ie, washing with hot water, opens a hot water valve (not shown) and, if washing with cold water, opens a cold water valve (not shown), followed by a washing tank (2) through the second temperature sensing means (4). 6) it is determined whether the washing water flowing into the hot or cold water (12).

In the case of not hot water, since there is no error in the water level in the air pressure transmitted to the water level detecting means 2 through the hose 6b, water is continuously supplied to the selected water level, but in the case of hot water, the water is introduced into the washing tank 6. An error occurs in the air pressure transmitted to the water level detecting means 2 through the hose 6b according to the temperature of the washing water. In other words, when the washing water is hot water, the vapor pressure is higher than that of the cold water at the same level. Therefore, the microcomputer 10 cannot accurately grasp the water level in the case of hot water. In order to prevent this phenomenon, the microcomputer 10 operates the cooling valve control means 9 at the same time as water supply if the washing water provided to the washing tank 6 is hot water so that the cooling valve 1 is controlled (12, 13). ).

At this time, the cooling valve control means 9 opens the cooling valve 1 for about 5 seconds, allows the cooling water to flow through the cooling pipe 5, and then closes the process of closing for 10 seconds until water supply is completed. By repeating the above process, the temperature of the air in the pneumatic container 6a becomes almost the same as the room temperature, so that the microcomputer 10 can accurately measure the amount of washing water supplied to the washing tank 6.

If the washing is selected by the user, after the water supply is completed to the selected water level (14), the microcomputer 11 drives the heater (not shown) through the heater driving unit 8 to perform the washing (15). . Boiling washing is performed at a predetermined temperature (eg, 90 ° C., 60 ° C., 30 ° C., etc.), and the microcomputer 10 adjusts the heating value of the heater according to the selected temperature.

When the performance of the boiled laundry is completed 16, the microcomputer 10 provides additional washing water to the washing tank 6 by controlling the cold water valve through the water supply valve control means 7.

The reason for this is to prevent the user from being burned by hot water when draining water while the temperature of the water in the washing tank 6 is heated.

While performing the above additional water supply, the microcomputer 10 senses the temperature of the pneumatic container 6a through the first temperature sensing means 3 and repeats the same process as in step 13 when the temperature of the air pressure vessel 6a is 20 ° C. or more. By lowering the temperature of the air provided to the water level detecting means 2 through the water level of the washing water is accurately measured (19).

When the additional water supply to the predetermined water level is completed (20), additional washing is performed, and after the completion of washing, draining and returning to the main program (20 to 22).

As described above, according to the present invention, even when the temperature of the washing water is changed and the air pressure is changed, it is possible to prevent the user from being burned due to the damage of the laundry due to the water level detection plate and the drainage of hot water.

Claims (2)

In order to perform all functions related to washing, the microcomputer 10 performs the management and control function of the whole washing machine control system, and the amount of washing water supplied by the microcomputer 10 to the washing tank 6 is supplied. The water supply valve control means (7) for controlling the opening and closing of the water supply valve for adjusting the pressure, the air pressure vessel (6a) for generating an air pressure corresponding to the water level of the washing water, and the air pressure provided through the hose (6b) In a water supply control apparatus of a washing machine comprising a water level detecting means for sensing (2) and a heater driving means (8) for driving a heater to warm the washing water during a boiled washing, the cooling surrounding the outer wall of the pneumatic container (6a) A pipe 5, a cooling valve 1 for adjusting the amount of cooling water flowing into the cooling pipe 5, and first temperature sensing means 3 for measuring the temperature of the air in the pneumatic container 6a. ) And second temperature sensing means (4) for measuring the temperature of the wash water in the washing tank (6), and data provided from the first temperature sensing means (3) or the second temperature sensing means (4). And a cooling valve control means (9) for controlling opening and closing of the cooling valve (1) in response to the water supply control device of the washing machine. A method of controlling opening and closing of a water supply valve to supply washing water to a washing tank, the method comprising: supplying the washing water to the washing tank by opening a cooling valve or a water supply valve, and determining whether the washing water is hot water and cooling water if it is hot water. Opening and supplying cooling water to a cooling tube, stopping the water supply and washing when the supply amount of the washing water reaches a predetermined selected level, and performing additional water supply when the washing is completed, and the air in the pneumatic container. Determining whether or not the temperature is above a predetermined temperature, and if the temperature is above the predetermined temperature, supplying the cooling water to the cooling tube of the salmon, the water supply to the selected level irrespective of whether the washing water is cold or hot water Water supply control method of the cooler, characterized in that to make.