JPH04220295A - Hot water/water mixing controller for washing machine - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hot water mixing control device for a washing machine that mixes water and hot water to wash clothes with hot water.

0002

BACKGROUND OF THE INVENTION In recent years, hot water/cold water mixing type washing machines that use hot water to wash clothes have become popular. This conventional hot water mixing type washing machine supplies water into the washing tub by appropriately driving the water side water supply valve and the hot water side water supply valve during the water supply process for washing or rinsing, and supplies water without detecting the water temperature. That's what it was.

0003

[Problems to be Solved by the Invention] In such conventional water supply type hot water mixing type washing machines, it is not possible to accurately bring the water temperature in the washing tub to a temperature suitable for washing. In order to solve this problem, a method has been adopted in which the water temperature in the washing tub is detected and the driving of the water side water supply valve and hot water side water supply valve is controlled to adjust the water temperature to an appropriate temperature.

However, in this method, the water supplied to the washing tub and the hot water are not mixed sufficiently, so the water temperature inside the washing tub cannot be accurately detected. Therefore, the water supply valve cannot be optimally controlled. The problem was that I couldn't do it.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a hot water mixing control device for a washing machine that can accurately detect the water temperature in a washing tub.

[0006]

[Means for Solving the Problems] In order to achieve the above object, the present invention includes a control means for controlling a water side water supply valve driving means, a hot water side water supply valve driving means, and a pulsator driving means,
The control means drives the pulsator to stir the water in the washing tub for a certain period of time before the temperature detection means detects the water temperature in the washing tub.

[0007]

[Operation] According to the above-described structure, the control means drives the pulsator to agitate the water and hot water supplied into the washing tub for a certain period of time before the water temperature detection means detects the water temperature in the washing tub. As a result, the water and hot water are sufficiently mixed, so that the water temperature in the washing tub can be accurately detected.

[0008]

Embodiment An embodiment of the present invention will be described below with reference to FIGS. 1 and 2.

As shown in the figure, 1 is the outer tub of the washing machine, 2 is the washing water, and 3 is the inner tub of the washing machine, which has many holes in the wall surface. The fixed outer tub 1 and the inner tub 3 form a washing machine. 4 is a pulsator, which is arranged at the inner bottom of the inner tank 3. 5 is a motor that rotates the pulsator 4; 6 is a water temperature detection means that detects the temperature of the washing water 2; 7 is a water side water supply pipe; 8
is the water side water supply valve, 9 is the hot water side water supply pipe, 10 is the hot water side water supply valve, 1
Reference numeral 1 denotes water level detection means for detecting the water level in the outer tank 1.

12 is a water side water supply valve driving means for driving the water side water supply valve 8; 13 is a hot water side water supply valve driving means for driving the hot water side water supply valve 10; 14 is a pulsator that drives the motor 5 that drives the pulsator 4; The driving means 15 is a control means for controlling the water side water supply valve driving means 12, the hot water side water supply valve driving means 13, and the motor driving means 14. 16 is a drain valve, and 17 is a drain port.

[0011] Here, the control operation of the control means 15 will be explained with reference to FIG. First, water level detection means 11
The water level data is input from , and it is determined whether the water level in the washing tub has reached a predetermined water level. If the predetermined water level has been reached, the water side water supply valve driving means 12 and the hot water side water supply valve driving means 13
If the water level has not reached the specified water level, water supply or hot water supply continues until the predetermined water level is reached. When the water level reaches the specified level, the outer tank 1
In order to accurately measure the water temperature inside the washing tub, a motor 5 rotates a pulsator 4 to stir and mix the water supplied into the washing tub and hot water. Then, after stirring for a predetermined time, the motor 5 is turned off, and after a waiting time for the water temperature in the washing tub to be sufficiently transmitted to the water temperature detection means 6, the water temperature data from the water temperature detection means 6 is inputted.

In the above example, the decision to rotate the pulsator 4 by the motor 5 is made based on the water level, but the invention is not limited to this; for example, the hot water side water supply valve 10 may be driven intermittently at predetermined intervals, and each The method of rotating the pulsator 4 by the motor 5 may be determined according to the temperature control method of hot water mixing, such as by determining the time by which the pulsator 4 is rotated each time. cycle, or a dedicated cycle set for stirring and mixing water and hot water. Furthermore, we set a predetermined waiting time before entering water temperature data.
Regardless of the waiting time, the data at the time when the water temperature data becomes stable may be used as the official water temperature data.

[0013]

As is clear from the description of the embodiments above, according to the present invention, the control means drives the pulsator to detect the water temperature in the washing tub for a certain period of time before the water temperature detection means detects the water temperature in the washing tub. It is possible to provide a hot water mixing control device for a washing machine that can sufficiently mix water and hot water by stirring the water and hot water supplied in the washing machine, and can accurately detect the water temperature in the washing machine. .

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a hot water mixing control device for a washing machine according to an embodiment of the present invention.

[Figure 2] Operation flowchart of the hot water mixing control device of the washing machine

[Explanation of symbols]

1 Outer tank (washing tub) 4 Pulsator 6 Water temperature detection means 8 Water side water supply valve 10 Hot water side water supply valve 12 Water side water supply valve driving means 13　Hot water side water supply valve driving means 14 Pulsator drive means 15 Control means

Claims (1)

[Claims] 1. A water side water supply valve, a hot water side water supply valve, a water temperature detection means for detecting the water temperature in the washing tub, a water side water supply valve driving means for driving the water side water supply valve, and the hot water side water supply. a hot water side water supply valve driving means for driving a valve; a pulsator disposed at the bottom of the washing tub; a pulsator driving means for driving the pulsator; the water side water supply valve driving means and the hot water side water supply valve driving means; and a control means for controlling the pulsator driving means, the control means driving the pulsator to agitate the water in the washing tub for a certain period of time before detecting the water temperature in the washing tub. Hot water mixing control device.