JP3272346B2 - Washing machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a washing machine.

[0002]

2. Description of the Related Art Bath water, that is, used water in a bathtub, is often used for rinsing water of a washing machine as a part of water saving. There has been proposed a washing machine capable of supplying a washing machine from a bathtub. At the tip of the suction hose of the self-contained pump, a suction port is provided at one end, and a discharge port reaching the suction hose is provided at the other end, and a suction filter (body) is inserted between both ports. ) Is provided to remove dirt from the bath water and prevent dirt from entering the washing machine.

[0003]

SUMMARY OF THE INVENTION It is an object of the present invention to save tap water and shorten the rinsing time by changing the priming time of the self-priming pump when it is first turned on and thereafter. It is to plan.

[0004]

SUMMARY OF THE INVENTION The present invention relates to a washing machine in which bath water is supplied to a washing tub by a self-contained pump to sequentially execute a washing step and a rinsing step. Further, priming is performed for a first predetermined time, and when supplying water in the rinsing step, priming is performed for a second predetermined time shorter than the first predetermined time to the self-contained pump.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail based on an embodiment shown in the drawings. It should be noted that the present invention is not limited by this.

FIG. 1 is a schematic explanatory view showing a state in which bath water is supplied from a bathtub to a washing machine using a suction structure of a self-contained pump for a washing machine according to the present invention.

In FIG. 1, bath water as a fluid, that is, the remaining water W in the bathtub 1 is supplied to a self-contained pump 2 (the water level in the case is always maintained up to the suction port of the pump, and the operation is started for a relatively short time. Water is supplied from the suction structure 3 to the washing machine (the washing tub) (5) via the hose 4 by a pump capable of supplying and discharging water. Reference numeral 6 denotes a pump case incorporating the self-contained pump 2, 7 denotes a check valve for supplying remaining water W in the pump case 6, 2a denotes a pump motor, and 2b denotes an impeller of the pump.

FIG. 2 is a side view of the suction structure, with a plan view at the top and a bottom view at the bottom. 3 is an enlarged cross-sectional view taken along the line AA ′ of FIG. 2, FIG. 4 is a side view of the filter, and FIG. 5 is a cross-sectional view taken along the line BB ′ of FIG.

First, in FIG. 2, the case main body 9 of the suction structure 3 has a built-in cylindrical first filter 10a (see FIG. 3), and the center of the first filter 10a can be observed from the outside. It comprises a tubular portion 11, an outlet member 12 and a suction end member 13 which are detachably attached to an upper end and a lower end of the central tubular portion 11, respectively. When the suction structure 3 is not used, 14 This is a hook piece for hooking the suction structure 3 into the hole 16 in the side wall 15 of the main body case of the washing machine 5 (see FIG. 1). In addition, 17 is a large number of through holes of the suction end member 13, the central one is formed small (small diameter), and the peripheral one is formed large (large diameter).
This corresponds to the distribution of the amount of water flow after suction, which will be described later.

3 to 5, a central cylindrical portion 11 is made of an outer cylinder 11 made of a transparent synthetic resin, for example, an AS resin.
a and a first filter member 10 disposed coaxially with a gap in the outer cylinder.
Is composed of a large lattice-shaped porous support (core) integrally formed of a polypropylene resin in a cylindrical shape, and a first filter 10a releasably wound around the porous support 18 about twice in a releasable manner. Have been. And the first filter 10
5A is a band formed by welding a polyester resin felt with an acrylic resin containing an antibacterial agent in FIG. 5 and having a contact surface portion 19 on the inside of the rear end. It has a detachable contact surface portion 20. On the other hand, reference numeral 21 denotes a second coarser than the first filter 10a.
A filter is made of an open cell made of polyurethane resin, 22 is a front case for accommodating the second filter 21, and its bottom wall 23 closes the front end opening of the porous support 18, The through-hole 24 is opened facing the gap between the first filter 10a and the outer cylinder 11a of the central cylindrical portion 11. The length of the first filter 10a in the axial direction is set to be slightly larger (for example, 82 mm) than the dimension (for example, 80 mm) between the rear wall 25 and the bottom wall 23 in the free length.
mm), the first and second walls 23 and 25 are brought into close contact with the first filter 10a, and water that is contaminated by a gap is removed from the first filter 10a.
Leakage does not occur without passing through a.

Next, the outlet member 12 inserts a ring-shaped weight 26 made of zinc so that the entire suction structure 3 can be submerged in water.
The hose 4 is connected to a reduced diameter portion (hose connecting portion) 12a of the outlet. Reference numeral 28 denotes a tube made of a vinyl resin, and 29 denotes a coil made of a vinyl chloride resin fused around the tube 28 to give the hose 4 flexibility.

Next, the operation of the suction structure 3 having the above configuration will be described.

First, when the suction structure 3 is submerged in bath water (spent water) W of a bathtub as a fluid and the self-contained pump 2 is operated, even if a predetermined priming water is present in the self-contained pump 2. The bath water W can be supplied from the suction structure 3 to the washing machine (the washing tub) 5 through the hose 4 by the self-contained pump 2 (usually supplied when supplying tap water).

At this time, the water sucked from the through hole 17 of the suction end member 13 passes through the second filter 21 to remove relatively large dirt (hair, etc.), and passes through the through hole 24 into the first filter 10a. Small dirt is removed from the outer peripheral surface through the first filter 10a. Here, the through-hole 17 is formed large near the through-hole 24 because the flow of water is large.

The removal of dirt by the first filter 10a is performed with a large surface area by steric filtration, so that it can be reduced.

The water from which dirt has been removed through the first filter 10a as described above passes through the third filter 27 from the rear end opening 25a of the rear wall 25 through the porous support 18, and passes through the hose 4
Is derived to Here, the third filter 27 is configured to have an eye size substantially similar to that of the second filter 21, and the first filter 10 a or the first filter 10 a and the second filter
Even if the user forgets to attach the filter 2, dirty water is prevented from being supplied to the washing machine 5 without passing through the filter at all, and serves as a safety filter.

To remove dirt from the first filter 10a and the second filter 21, the suction end member 13 is first removed from the suction structure 3, the second filter 21 in the front case 22 is removed, and the suction structure is further removed. The front case 22 and the porous support 18 are extracted from the body 3 and the porous support 18
The first filter 10a wound around the periphery of the
9 and the contact surface portion 20 are released and removed, and the dirt is removed.

When the suction structure 3 is not used, the hook 14 is hooked into the hole 16 in the side wall 15 of the washing machine 5 as described above. Since it is reversed, water in the suction structure 3 does not drop, and since the weight 26 is located below the suction structure 3, the outlet member 1 incorporating the weight 26 is provided.
2 closely adheres to the side wall 15, whereby vibration (resonance) can be prevented even when the washing machine 5 is operated.

Unlike the above embodiment, a weight can be formed on the suction end member 13 so that the entire suction structure is submerged in water.

FIG. 6 is a diagram corresponding to FIG. 3 showing another embodiment.

In FIG. 6, reference numeral 30 denotes a weight, which is inserted into the suction end member 13 instead of the outlet member 12 of the suction structure 3.

Here, the priming of the self-contained pump will be described.

FIG. 7 is a block diagram mainly showing a self-contained pump and a water supply valve directly connected to a water supply, and FIG. 8 is a timing chart showing drive timings of the self-contained pump and the water supply valve.

First, in FIG. 7, the control unit 32 comprises a microcomputer for controlling the washing machine 5, and based on a key input signal from the key input unit 33 and a detection result by the water level sensor 34, etc. Drive motor 35 for driving blades (not shown), water supply valve 3 directly connected to water supply
6. Drive control of the self-contained pump 2 and the electromagnetic drain valve 37.

In FIG. 8, since it is considered that there is almost no priming of the self-contained pump 2 at the time of the first washing, the water supply valve 36 directly connected to the water supply is turned on for about 15 seconds, and tap water is supplied as priming, and then self-supply is performed. The pump 2 is turned on to supply bath water as washing water.

In the next step of rinsing (rinsing, rinsing, rinsing, and dehydrating rinsing), the priming water of the self-contained pump 2 usually remains almost at the time of washing. The valve 36 is turned on for only about 5 seconds, and tap water is injected as supplementary priming water. Thereafter, the self-contained pump 2 is turned on to supply bath water to the washing tub as rinse water.

As described above, the control unit 32 changes the supply time of the priming water when the self-contained pump 2 is first turned on and after that (for example, about 1/3 as described above).
Tap water can be saved, and the rinsing time can be shortened.

[0028]

According to the present invention, tap water can be saved and the rinsing time can be reduced by changing the supply time of priming water during washing and subsequent rinsing of the self-contained pump.

[Brief description of the drawings]

FIG. 1 is a schematic explanatory view showing a state in which bath water is supplied from a bathtub to a washing machine by a self-contained pump.

FIG. 2 is a side view showing one embodiment of the suction structure according to the present invention, in which a plan view is shown at the top and a bottom view is shown at the bottom.

FIG. 3 is an enlarged cross-sectional view taken along line AA ′ of FIG. 2;

FIG. 4 is a side view of the first and second filter members.

FIG. 5 is a sectional view taken along the line BB ′ of FIG. 4;

FIG. 6 is a diagram corresponding to FIG. 3, showing another embodiment.

FIG. 7 is a block circuit diagram mainly including a self-contained pump and a water supply valve directly connected to a water supply.

FIG. 8 is a timing chart showing the drive timing of the self-contained pump and the water supply valve.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Bathtub 2 Self-contained pump 3 Suction structure 4 Hose 5 Washing machine 6 Pump case 7 Check valve 9 Case main body 10 First filter member 10a First filter 11 Central cylindrical portion 11a Outer cylinder 12 Outlet member 13 Suction end member 14 Hook piece 15 Side wall 16 Hole 17 Through hole 18 Porous support 19 Adhesive surface portion 20 Adhesive surface portion 21 Second filter 22 Front case 23 Bottom wall 24 Through hole 25 Rear wall 26 Weight 27 Third filter 28 Tube 29 Coil

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-8-131688 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) D06F 39/08 321

Claims (1)

(57) [Claims] 1. A washing machine in which bath water is supplied to a washing tub by a self-contained pump and a washing step and a rinsing step are sequentially performed. A washing machine characterized in that when supplying water in the rinsing step, the self-priming pump is primed for a second predetermined time shorter than the first predetermined time.