JPH0497780A - Controller for hot-water/cold water combined 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 Field of the Invention The present invention relates to a control device for a hot water mixing washing machine that mixes water and hot water to perform washing with warm water.

BACKGROUND OF THE INVENTION In recent years, there has been an increasing demand for washing machines that mix hot water and cold water so that the dehydration tub does not deform even when the temperature of the washing water is high.

The control device for conventional hot water mixing washing machines that mix water and hot water to wash clothes with hot water prevents the dehydration tank from deforming during spin-drying when the temperature of the spin-dry tank is high after washing with hot water. In order to prevent the appearance of wrinkles on clothing, a cooling process is performed in which water is poured and stirred unconditionally after the washing process is completed and before moving to the dehydration process of the rinsing process.

Problems to be Solved by the Invention However, in this method, regardless of the temperature of the dehydration tank, a cooling process is performed even when washing is performed with water, so there is a problem that water and time are used unnecessarily.

The present invention solves the above problems by performing the cooling process only when the temperature of the dehydration tank exceeds the temperature at which clothes become deformed or wrinkled during dehydration, thereby eliminating unnecessary use of water and time. It is an object of the present invention to provide a control device for a hot water/cold mixing washing machine that prevents the washing from occurring.

Means for Solving the Problems In order to achieve the above object, the present invention provides a control means for controlling a series of processes such as washing, rinsing, and spin-drying, a water supply means for supplying hot water and water into a washing tub, and a washing machine. The apparatus includes a temperature detection means for detecting the temperature of water, and is configured to detect the temperature of the washing water at the end of the washing process.

Function: With this configuration, the temperature of the dehydration tank can be determined by detecting the water temperature in the washing tank, and only when this temperature exceeds a predetermined value, the water is removed during the transition from washing to rinsing process. , which can be rinsed with water.

EXAMPLE Hereinafter, an example of the present invention will be described with reference to FIGS. 1 to 4.

As shown in the figure, a washing tub 1 is provided with a dewatering tub 4 which also serves as a washing machine, in which a stirring blade 3 is rotated by a motor 2 during washing or rinsing, and the tub rotates during dewatering. The drain port 5 is provided with a drain means 6 consisting of a drain valve for controlling drainage, and the washing tub 1 is equipped with a water level detecting means 7 for detecting the water level in the washing tub 1.
It is connected to the inside. Further, at the bottom of the washing tub 1, a temperature detection means 8 consisting of a temperature sensor or the like for detecting the temperature of washing water is provided. A water metering water supply port 9 and a hot water side water supply port 10 are provided for mixing and supplying hot water to the washing tub 1, and a water side water supply means 11 for controlling the water supply amount is provided for the water side water supply port 9. The hot water supply port 1Q is provided with a hot water side water supply means 12 for controlling the amount of hot water supplied. Then, according to the signals from the water level detection means 7 and the temperature detection means 8, the water side water supply means 11, the hot water side water supply means 12, the motor 2, and the drainage means 6 are activated.
A control device 13 is provided.

The operation of the above configuration will be explained with reference to the flowchart of FIG. First, in step 21, while the temperature detection means 8 detects the temperature of the washing water in order to adjust the water temperature to the water temperature set by the user, the water side water supply means 11 and the hot water side water supply means 12
The water level detection means 7 is controlled in step 22 to supply water.
Detects the water level of washing water and supplies water up to the set water level. After reaching the set water level, stirring is continued in step 23 until the washing time ends. At this time step 2
In Step 4, the temperature detection means 8 detects the temperature of the washing water, and the temperature at the time when the stirring of the washing process is finished is determined in Step 2.
Judge with 6. The dehydration tank 4 is made of resin, and when dehydration is performed, if the temperature exceeds approximately 40°C, the hardness decreases and deformation occurs due to the rotational movement of dehydration, causing noise, vibration, and safety issues. There is a problem. Therefore, in step 26, the temperature of the dehydration tank 4 is indirectly determined by detecting the temperature of the washing water, and if this temperature is higher than a predetermined temperature, the process is performed as shown in the case of "cooling stroke foot" in FIG. After draining water, a cooling process is performed in which water is supplied and stirred, and then a series of operations up to the normal dehydration process are performed. If this temperature is below the predetermined temperature, as shown in the case of "No cooling process" in Figure 4, the process shifts to the normal rinsing process where water is drained and then dehydrated, and then the series of processes up to the dehydration process are carried out. perform an action.

In addition, since the purpose of the cooling process is to cool the dehydration tank 4, the water flow for stirring is weak and there is no problem.

Further, in this embodiment, the water temperature is detected at the end of stirring in the washing process, but the water temperature may also be detected and determined during stirring or during drainage after the stirring is completed.

Effects of the Invention As is clear from the above embodiments, according to the present invention, the temperature of the dehydration tub is determined by detecting the water temperature in the washing tub, and only when this temperature exceeds a predetermined value, the washing is stopped. Since rinsing with water is performed during the transition to the rinsing process, avoid unnecessary use of water and time when the temperature of the dehydration tank is low, such as after washing with water. It is possible to provide a control device for a washing machine that can mix hot and cold water.

[Brief explanation of the drawing]

Fig. 1 is a block diagram of a control device for a hot water/cold mixing washing machine showing an embodiment of the present invention, Fig. 2 is a cross-sectional view of the configuration of the hot/cold/cold mixing washing machine, and Fig. 3 is a control device for a hot water/cold mixing washing machine. FIG. 4 is an operation flowchart of the control device for the hot water/cold mixing washing machine. 1...Washing tub, 4...Dehydration tank, 7...
Water level detection means, 8...Temperature detection means, 11...
・Water side water supply means, ...Hot water side water supply means, ...Control means.

Claims (1)

[Claims] It is equipped with a control means for controlling a series of processes such as washing, rinsing, and spin-drying, a water supply means for supplying hot water and water into the washing tub, and a temperature detection means for detecting the temperature of the washing water. A control device for a hot water mixing washing machine, characterized in that the temperature is detected and only when the detected temperature exceeds a predetermined temperature, a cooling process of a dehydration tank is performed during the transition from a washing process to a rinsing process.