JPH0451757Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a water injection rinsing control device for a washing machine.

(Conventional technology) Water rinsing in a washing machine is performed by pouring water into the water tank and letting the water overflow from the overflow port, so there are cases where the drain hose is forgotten to be turned down or the drain hose is bent, resulting in poor drainage performance. If this happens, the water level in the aquarium will rise abnormally, and water will eventually overflow from the top of the aquarium, resulting in an abnormal overflow phenomenon.

In order to prevent such abnormal water overflow phenomena, in the past, when the water level in the water tank exceeds the overflow water level and abnormally rises, the change in water level is detected and the water injection and motor are stopped, and water injection rinsing is stopped. It was configured to do so.

(Problem that the invention seeks to solve) By the way, if water injection rinsing is stopped as in the past, the user may not notice the cancellation immediately and may only notice it after the rinsing time has elapsed. In such a case, the time was wasted and it was necessary to carry out the rinsing process again.

However, with the present invention, when the water level rises abnormally due to forgetting to turn down the drain hose, etc., the water injection rinse is changed to a sample rinse and continued, thereby eliminating wasted time.

(Means for solving the problem) The content of the present invention is to detect that the water level in the water tank has reached an abnormal water level set higher than the overflow water level in a washing machine that performs rinsing work while pouring water, and to send an abnormal signal. In a water injection rinsing control device that is provided with a detector that outputs an error signal and stops the water injection operation or stops the motor when an abnormal signal is output from the detector, only the water injection operation is stopped when the abnormal signal is output from the detector. It is provided with a means for continuing the operation of the motor and continuing the rinsing operation.

(Function) During water injection rinsing, if the water level in the water tank exceeds the overflow level and reaches an abnormal water level due to forgetting to turn down the drain hose or bending the drain hose, the detector detects this and outputs an abnormal signal. Then,
By stopping water injection in response to the output of the abnormal signal, further rise in water level is suppressed to prevent abnormal water overflow, and rinsing work is continued with water injection stopped. Therefore, although water pouring rinsing is changed to water rinsing, the rinsing work can be continued, and time is not wasted.

(Example) Hereinafter, the example of the present invention shown in FIGS. 1 and 2 will be described in detail.

FIG. 1 is a schematic diagram of a washing machine according to an embodiment of the present invention. In the figure, 1 is a water tank, 2 is a washing and dewatering tank, 3 is a pulsator, 4 is a motor, 5 is a drain port at the bottom of the tank 1, 6 is an overflow port at the top of the side of the tank 1, 7 is a drain valve, and 8 is a The water supply valve 9 is a drain hose connected to the drain port 5 via a drain valve 7 and to the overflow port 6 via an overflow hose 10, and is folded down during use as is well known in the art. 11 is a float switch installed at the tip of the overflow hose 10, which is turned ON when the water level in the water tank 1 reaches an abnormal water level Y that is set higher than the overflow water level It acts as a detector that outputs a signal.

Fig. 2 is a block diagram showing the control system of the washing machine, where A is the electronic control circuit mainly composed of a microcomputer, and B is the float switch 1.
1. A detection unit including a water level switch (not shown) that detects changes in the water level in the water tank 1 by pressure changes, C
is the load of the motor 4, drain valve 7, water supply valve 8, etc., D
indicates a key input section, and E indicates a display section. Thus, the electronic control circuit section A controls the rinsing process as shown in the flowchart shown in the third figure.

Next, the operation will be explained according to the flowchart shown in FIG.

When the rinsing process starts, first, the water supply valve 8 is opened to start pouring water into the water tank 1. Then, when the water level in the water tank 1 reaches the set water level, the water level switch is turned on, and if water injection rinsing is set at this time, the motor 4 is driven with the water supply valve 8 open, and the water injection rinsing work is started.

During rinsing, if the drain hose 9 is knocked down and exhibits normal drainage capacity, the water in the water tank 1 will overflow and drain from the overflow port 6 to the overflow hose 1.
0. Since the water is drained to the outside via the drain hose 9, the water level in the water tank 1 never exceeds the overflow water level X.

If the drain hose 9 is forgotten to be turned down, the water in the tank 1 will not be drained, and the water level in the tank 1 will rise above the overflow water level X and reach the abnormal water level Y. Then, the float switch 11 is turned on, and accordingly, the electronic control circuit section A immediately closes the water supply valve 8 to stop water injection, and performs the subsequent rinsing operation by changing it to a trial rinse, and the rinsing time elapses. Continue until. At this time, the water level in the aquarium 1 will not rise above the abnormal water level Y due to the stoppage of water injection, and therefore, an abnormal overflow phenomenon in which water overflows from the upper end of the aquarium 1 is prevented.

(Effects of the invention) As described above, the present invention can reliably prevent abnormal water overflow in cases where the user forgets to turn down the drain hose during rinsing, or when the drain hose is bent. By being able to change and continue the process, it is possible to avoid wasting time as in the conventional method, which is an extremely useful device in practice.

[Brief explanation of the drawing]

FIG. 1 is a schematic configuration diagram of a washing machine according to an embodiment of the present invention, FIG. 2 is a block diagram showing the control system thereof, and FIG. 3 is a flowchart thereof. 1... Water tank, 6... Overflow port, 8... Water supply valve, 1
1... Float switch (detector), A... Electronic control circuit section, B... Detector, X... Overflow water level, Y... Abnormal water level.

Claims (1)

[Scope of utility model registration request] A washing machine that performs rinsing work while pouring water is equipped with a detector that detects when the water level in the water tank reaches an abnormal water level set higher than the overflow water level and outputs an abnormal signal. In a water injection rinsing control device that stops water injection operation or stops a motor according to an output, only the water injection operation is stopped by an abnormal signal output from the detector,
and the motor continues to operate while the water injection is stopped,
A water injection rinsing control device for a washing machine, comprising a means for continuing rinsing work.