JPS60139289A - Water supply and discharge pump device 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 Field of Industrial Application The present invention relates to a suction and drainage pump for a washing machine used in general households.

Conventional structure and its problems Conventionally, when the drain from a washing machine was located at a higher level than the washing machine's drain port, a drain pump was installed at the end of the washing machine's drain hose to drain the water, or a drain pump was built in. The drain hose of the washed washing machine was led to the drainage area to drain the water.

However, in the former case, manual washing machines are inconvenient to use because they require the pump to operate every time the water is drained, and automatic washing machines do not pump when the user leaves the washing machine during washing. The pump has to be operated from the start to the end of washing, which shortens the life of the pump and reduces power consumption.

Furthermore, in the case of automatic type washing machines with a built-in drainage pump, the drainage pump operates for a certain period of time from the start of draining, so the pump continues to operate even after draining has finished. This results in wasted power consumption, and time is wasted because the process does not proceed to the next step as soon as the drainage is completed, making it impossible to shorten the washing time.

Furthermore, in a washing machine with a built-in drain pump, when using water other than tap water (for example, bath water) to supply water to the washing machine, a bucket is used to supply the water, or a separate pump is used to supply water. It is not easy to use, and if a separate pump is used, it is expensive.

Purpose of the Invention The present invention solves these conventional problems, eliminates unnecessary drive of the pump, shortens washing time, reduces power consumption, and improves ease of use by providing the pump with a suction and drainage function. The present invention provides a suction and drainage pump device for a washing machine.

Structure of the Invention The suction and drainage pump device for a washing machine of the present invention includes a water intake port connected to a drainage hose of the washing machine, a runner that is rotationally driven by a motor, and a discharge port that discharges water by the rotational drive of the runner. a pump having a pump, a detection means for detecting the presence or absence of a predetermined amount of water in the pump, a control means for controlling energization of the motor based on a signal from the detection means, regardless of the presence or absence of a signal from the detection means; When the motor is energized to suck water into the washing machine, the piping to the water intake port and discharge port of the pump is replaced, and the pump is driven to suck water regardless of whether or not water is detected in the pump. It is.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings.

In the figure, 1 is a fully automatic washing machine, 2 is a drain hose of the washing machine 1, 3 is a suction/drainage pump device, and 4 is a suction pipe that fits tightly into the drain hose 2 and water suction hose (not shown) of the washing machine 1. The water intake port 5 of the drainage pump device 3 is a discharge hose that is connected to the discharge port 6 of the suction and drainage pump device 3, and is led to a position higher than the drainage position of the washing machine 1 (for example, a washstand, a sink 7). ing.

Suction and drainage pump device 3J/i, the water intake port 4. A water suction pipe 8 communicating with the discharge port 6. The pump has a discharge pipe 9, a runner 11 rotated by a motor 1o, a pump casing 12 that encloses the runner, and a separator 13 for removing air from the water suction pipe 9.

Reference numeral 14 denotes a pressure switch (sensing means and control means) that operates by detecting pressure via an air trap 15 and an air hose 16 when a predetermined amount of water enters the pump. 8 energization 0N-OFF
do.

Reference numeral 17 denotes a changeover switch. When the changeover switch 17 is connected to the drain side, the motor 1o is driven to rotate by the operation of the pressure switch 14, and when the changeover switch 17 is connected to the water intake side, the motor 1o is rotated regardless of the operation of the pressure switch 14. The motor 1o is rotationally driven.

To explain the operation in the above configuration, a water suction hose (not shown) is connected to the water suction port 4 of the suction and drainage pump device 3, the water suction hose is put into a container containing water (e.g. bathtub, bucket), and the discharge hose 6 When the washing machine 1 is placed in a washing tub (not shown) and the selector switch 7 is set to the water absorption side, the motor 10 is driven to rotate. The runner 11 is rotated by the rotational drive of the motor 10.
sucks the water in the cenerator 13 into the pump casing 12 and also sucks the air in the water suction pipe 8. Since the amount of water in the separator 13 is small, it is not discharged from the discharge hose 9, but returns to the separator 13 through the lower through hole 18, and returns to the pump casing 1 together with the air in the water suction pipe 8.
Enter 2. By repeating this operation, the air in the water suction pipe 8 and the water suction hose disappears, and the water is sucked up and enters the washing tub.

Next, connect the drain hose 2 of the washing machine 1 to the water intake port 4 of the suction/drainage pump device 3, attach the discharge hose 6 to the washbasin,
When the changeover switch 17 is connected to the drain side, when draining the washing machine 1, the drain liquid passes from the drain hose 2, through the water inlet 4 of the suction and drainage pump device 3, and the water suction pipe 8, and enters the separator 13 and the pump casing 12. Since the pressure inside the air trap 15 increases, the pressure switch 14 operates and the motor 10
drives the rotation.

Due to the rotational drive of the motor 10, the runner 11 absorbs water from the water suction pipe 8 side, and the runner 11 absorbs water from the water suction pipe 8 side. Drainage liquid is discharged through a discharge hose 5 to a position higher than the washing machine 1.

As the drainage work progresses and the water in the washing machine 1 disappears, the pressure in the air trap 15 decreases, and the pressure switch 14
is turned off, so the rotation of the motor 10 stops.

Therefore, when the water in the washing machine 1 runs out, the suction and drainage pump device 3 stops, and the motor 10 can be driven only for the time necessary for draining water.

Fig. 4 shows a circuit in which the suction u1 water selector switch is also used as a pressure switch, in which the contacts are forcibly closed when water is being sucked in, and the contacts are closed by sensing water pressure when water is being drained.

It may be a recommended washing machine or a manual washing machine.

Further, in this embodiment, the pressure switch 14 includes a detection means for detecting the presence or absence of a predetermined amount of water, and based on a signal from this detection means,
It also serves as a control means for controlling the energization of the motor 10,
The ilr control means is a separate member, and the motor 10 is operated by operating the separate member based on the signal from the detection means such as the pressure switch 14.
The energization may be controlled.

Furthermore, although a pressure switch is used as a means for detecting the presence of water, other water pressure detection means may be used, such as a water level detection means such as a float switch, or a water detection means using a thermistor.In short, the water inside the pump can be detected. It is fine as long as it is done.

Effects of the Invention As is clear from the above embodiments, the suction/drainage pump device for a washing machine of the present invention includes a water suction port connected to a drain hose of the washing machine, a runner rotated by a motor, and a rotation drive of the runner. a pump having a discharge port for discharging water; a detection means for detecting the presence or absence of a predetermined amount of water in the pump; a control means for controlling energization of the motor based on a signal from the detection means; By providing a forced energization means that forcibly energizes the motor regardless of the presence or absence of a signal from the means, the pump is driven only for the required drainage time of the washing machine, thereby shortening the washing time and increasing the durability of the pump. It can be used for multiple purposes, as it can be used as a water suction pump by changing the suction and drainage connections and switching the changeover switch.

[Brief explanation of the drawing]

Fig. 1 is a front view of a washing machine and a suction/drainage pump device showing one embodiment of the present invention, Fig. 2 is a vertical sectional view of the same suction/drainage pump device, Fig. 3 is an electric circuit diagram of the same, and Fig. 4 is a FIG. 3 is an electric circuit diagram of a suction/drainage pump device showing another embodiment of the present invention. 1...Washing machine, 2...Drain hose, 4
...Water inlet, 6...Discharge port, 10...
...Motor, 11...Runner, 14...
...Pressure switch (detection means and control means), 17.
・・・・・・Choice switch.

Claims (1)

[Claims] A pump having a water intake port connected to a drain hose of a washing machine, a runner rotationally driven by a motor, and a discharge port discharging water by the rotational drive of the runner, and the presence or absence of a predetermined amount of water in the pump. a detection means for detecting σ, a control means for controlling energization of the motor based on a signal from the detection means, and a forced energization means for forcibly energizing the motor regardless of the presence or absence of a signal from the detection σ means. Washing machine suction and drainage pump device.