JPS615889A - Water supply and discharge pump apparatus of washer - 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 water supply and drainage pump device for a washing machine used in a general household.

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. Since the pump needs to operate from the start to the end of washing, the life of the pump is shortened and power consumption is lost.

In the latter case, 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 if the draining finishes early. This results in wasted power consumption and
As soon as the drainage is completed, the next process does not proceed, resulting in wasted time and the washing time cannot be shortened.

Furthermore, when using water other than tap water (for example, bath water) in a washing machine, it is possible to use a bucket or reverse the connection of the drain pump and use it as a water supply pump, but these methods are not convenient to use.

Purpose of the Invention The present invention solves these conventional problems. 1. It eliminates unnecessary drive of the pump, shortens washing time, reduces power consumption, and improves ease of use by providing the pump with a water supply and drainage function. The present invention provides a water supply and drainage pump device for a washing machine.

Structure of the Invention The water supply and drainage pump device for a washing machine of the present invention includes a drain cock device provided at the bottom of the water receiving tank, an overflow port provided at the top of the water tank, and an overflow pipe communicating with the overflow port and the downstream side of the drain cock device. and a drain hose, a water suction pipe connected to the drain hose of the washing machine, a runner rotated by a motor, and a discharge pipe that discharges water by rotation of the runner. E., a pump device including a directional switching valve that communicates with a water suction side and a discharge side of a pump casing in which the runner is installed between the water suction pipe and the discharge pipe, and a pump device that detects the presence or absence of a predetermined amount of water in the pump device. Based on the detection means to detect and the signal of the detection means 1. The motor is equipped with a control means for controlling energization of the motor and a forced energization means for forcibly energizing the motor regardless of the presence or absence of a signal from the detection means, and by operating a directional control valve, the water intake and water can be discharged. When the water inside the washing machine is to be supplied, the pump is forcibly driven to supply water to the washing machine, and when the water inside the washing machine is to be drained, the water is drained by detecting the presence or absence of water 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 water tank of the washing machine 1, 3 is a drain cock device installed at the bottom of the water tank 2, 4 is an overflow port installed at the top of the water tank 2, and 6 is the overflow port. 4 is an overflow pipe communicating with the downstream side of the drain cock device 3, and 6 is a drain hose of the washing machine 1.

Reference numeral 7 denotes a water supply and drainage pump device; 8, a water suction pipe of the water supply and drainage pump device 7 that closely fits into the drain hose 6 of the washing machine 1; and 9, a runner 12 that is connected to the discharge pipe 10 of the water supply and drainage pump device 7; a pump casing 13, a pump suction pipe 14 connected to the water suction side of the pump casing 13, and a pump discharge pipe 15 connected to the discharge side of the pump casing 13, and the water suction pipe 8. Discharge pipe 10 and pump suction pipe 14. A switching valve device 16 is provided between the pump discharge pipes 160.

Reference numeral 17 denotes a directional switching valve, and an operation knob 18 allows the water suction pipe 8 and the pump suction pipe 14'', the discharge pipe 10 and the pump discharge pipe 1 to be connected to each other.
6, or water suction pipe 8 and pump discharge pipe 16. Discharge pipe 1
0 and the pump suction pipe 14 are communicated with each other.

19 is an air trap 20 when a predetermined amount of water enters the pump. A pressure switch 19 detects pressure and operates in conjunction with the air hose 21, and this pressure switch 19 turns off the power to the motor 11.

Reference numeral 22 denotes a change-over switch, which operates in conjunction with the operation knob 18 of the directional change-over valve 17. When set to the water supply side, the motor 11 is driven to rotate regardless of the pressure switch 19, and when set to the drain side, the motor 11 is rotated regardless of the pressure switch 19. The motor 11 is rotated by the operation.

To explain the operation in the above configuration, the hose 9 of the water supply and drainage pump device 7 is connected to a container containing water (for example, a bathtub or a bucket).
When the operation knob 18 is set to the water supply side, the motor 11
drives the rotation. Due to the rotational drive of the motor 11, the runner 12 pumps water from the water container to the hose 9.
Discharge pipe 10. Pump water suction pipe 14. Pump casing 13
．． Pump discharge pipe 16. Water suction pipe 8. Water is supplied into the water receiving tank 2 through the drain hose e, the overflow pipe 6° and the overflow port 4.

Load the clothes into the washing machine 1, turn on the switch (not shown) of the washing machine 1, supply the water, and fill the water tank 2.
When a predetermined amount of water is supplied to the washing machine 1, the operation knob 1 of the hourly supply/drain pump device 7 is pressed to start the washing operation.
8 to the drainage side, the operation of the water supply and drainage pump device 7 is stopped and at the same time the directional control valve 17 of the directional control valve device 16 is switched to the drain side.
The direction of is also switched.

When the washing process of the washing machine 1 progresses and the water is drained, the drain cock device operates, and water enters the water supply and drainage pump device 7 from the washing machine 1 through the drain hose 6, and the water in the air trap 21 is drained. Since the pressure increases, the pressure switch 19 operates. At this time, the motor 11 is energized regardless of the changeover switch 22, and due to the rotation of the learner 12,
Drainage water passes through the water suction pipe 8, the pump water suction pipe 14, and the pump discharge pipe 16. The water inside the washing machine 1 is drained to the outside of the washing machine 1 because it flows into the discharge pipe 10.

As the drainage work progresses and the water in the washing machine 1 disappears, the pressure in the air trap 21 decreases and the pressure switch 19
becomes FF, and the rotation of the motor 11 stops. Therefore, when the water in the washing machine 1 runs out, the water supply and drainage pump device 7 stops, and the motor 11 can be driven only for the time required for draining water.

In the above embodiments, the washing machine is a fully automatic washing machine, but it may be a two-tub washing machine with automated washing and dewatering sides, or a manual washing machine.

Further, in this embodiment, the pressure switch 1e 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 13,
The control means may be a separate member, and the separate member may be operated based on a signal from a detection means such as the pressure switch 16 to control the energization of the motor 13.

Further, although a pressure switch is used as a means to detect 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 something.

Effects of the Invention As is clear from the above embodiments, the suction/drainage pump device for a washing machine of the present invention has a drain cock device provided at the bottom of the water receiving tank;
A washing machine comprising an overflow port provided at the top of the water receiving tank, an overflow pipe communicating with the overflow port to a downstream side of a drain cock device, and a drain hose, and a water suction pipe connected to the drain hose of the washing machine. and a runner rotationally driven by a motor, and a discharge pipe that discharges water by rotation of the runner, and the runner is disposed between the water suction pipe and the discharge pipe. A pump device including a switching valve, a detection means for detecting the presence or absence of a predetermined amount of water in the pump device, and based on a signal from the detection means,
By providing a control means for controlling the energization of the motor and a forced energization means for forcibly energizing the motor regardless of the presence or absence of a signal from the detection means, it is possible to control the suction and drainage of the pump simply by operating the directional control valve. When draining water, the pump automatically operates in conjunction with the washing machine's drain water, reducing washing time.

The durability of the pump has been improved, and the suction and drainage can be easily operated, making it easier to use.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional view of a vertical water pump device for a washing machine showing an embodiment of the present invention, FIG. 6 is a plan view of the main part thereof, and FIG. 6 is an electric circuit diagram thereof. 1...Washing machine, 2...Water tank, 3...-
・・Drain cock device, 4・・Overflow port, 6・・・・
・Overflow pipe, e... Drainage hose, 7... Water supply and drainage pump device, 8... Water intake pipe, 10...
・Discharge pipe, 11...Motor, 12...Syn f-, 13...Bomb K song, 17...
... Direction switching valve, 19 ... Pressure switch (detection means and control means), 22 ... Changeover switch. Name of agent: Patent attorney Toshio Nakao and 1 other person
1 Figure 2 Figure 3

Claims (1)

[Claims] A washing machine comprising a drain cock device provided at the bottom of the water receiving tank, an overflow port provided at the top of the water tank, an overflow pipe communicating with the overflow port and the downstream side of the drain cock device, and a drain hose; A water suction pipe connected to a drainage hose of a washing machine, a runner rotationally driven by a motor, and a discharge pipe that discharges water by rotation of the runner, and the runner is installed between the water suction pipe and the discharge pipe. a pump device equipped with a directional switching valve communicating with the water suction side and the discharge side of the pump casing; a detection means for detecting the presence or absence of a predetermined amount of water in the pump device; A water supply and drainage pump device for a washing machine, comprising a control means for controlling energization, and a forced energization means for forcibly energizing the motor regardless of the presence or absence of a signal from the detection means.