JPH0630137Y2 - washing machine - Google Patents

Description

[Detailed Description of the Invention] (Industrial field of application) The present invention relates to a washing machine having a storage tank for storing the cleaning liquid in the lower part of the cleaning chamber, which maintains the cleaning degree of the cleaning liquid stored in the storage tank and The present invention relates to a wastewater treatment structure capable of improving heat retention and preventing the drainage line from being contaminated and clogged with residues.

(Prior Art) In a washing machine having a storage tank at the bottom of the washing chamber to circulate the washing liquid to perform washing, prevent the residue such as food dregs contained in the washing liquid from being circulated in the washing liquid line. In order to do so, generally, a storage tank is covered with a strainer to perform filtration.

In addition, in order to drain the washed liquid that has accumulated in the liquid storage tank after cleaning, many of them have a structure in which a drainage overflow pipe that is detachably attached to the drain port is installed upright in the liquid storage tank. As a device having both structures, for example, there is a known device disclosed in Japanese Utility Model Laid-Open No. 62-100161, and this device is as shown in FIG.
It has a structure in which an overflow pipe is erected below the strainer pan, and a drip-proof plate made of a flat plate is provided at a portion of the strainer pan which is directly above the pipe.

(Problems to be solved by the invention) By the way, in the above device, the food slag that is sunk at the bottom of the liquid storage tank may flow out of the tank because the drainage port is closed and the overflow pipe is upright. Without stopping, the food stagnation in the tank is maintained during the cleaning operation.
During the rinsing process, if the high-temperature clean water used for rinsing flows into the liquid storage tank, it directly flows out of the tank through the upper opening of the overflow pipe, while dirty low-temperature wash water remains in the liquid storage tank. Therefore, the liquid in the liquid storage tank used for the next cleaning cycle needs to be heated by an auxiliary heater or the like each time, which causes a problem of large heat loss.

Furthermore, when the overflow pipe is pulled out from the drain port to discharge the residual liquid in the liquid storage tank, the food dregs that have passed through the strainer pan and are mixed in the liquid in the liquid storage tank remain together with the liquid. If it were to flow out from the drainage port and this was repeated many times, there were inconveniences such as clogging of the drainage pipe and contamination of the drainage line.

The present invention has been devised in order to improve such conventional problems.The overflow pipe is formed as a top pipe with the upper end closed, while water is passed to the lower part around the overflow pipe. The structure is such that the residual trap pipe of the cylindrical body provided with the hole is arranged so that the stored liquid in the storage tank can be overflowed from the bottom side and the residue when the overflow pipe is removed. The trap tube prevents the direct discharge of the residue in the storage tank,
Therefore, it is intended to improve the heat retention of the cleaning liquid and prevent contamination of the drainage line.

(Means for Solving the Problems) Therefore, in order to achieve the above object, the invention of claim 1 discloses that, as shown in the embodiment of the accompanying drawings, the upper end is closed and the pipe wall near the top is flooded. The overflow pipe (12) provided with a mouth (17) is erected below the strainer pan (14) in the tank of the liquid storage tank (3) that is the bottom of the cleaning chamber (2), and the lower end pipe peripheral wall A ring-shaped water stopcock (13) is fitted to the bottom of the overflow pipe (12) so that the lower end opening is liquid-tightly fitted to the drainage port (11) at the bottom and the overflow pipe (12) is surrounded. Residue trap tube consisting of open cylinder
(15) is arranged, the residue trap tube (15),
Liquid tightly fixed to the bottom of the liquid storage tank (3) and the overflow port (17)
It is characterized in that it is erected up to a higher level, and that a small-diameter water passage hole (18) is provided through the pipe wall at a position slightly higher than the bottom of the liquid storage tank (3).

Next, the invention of claim 2 is a stepped cylinder in which the residue trap pipe (15) connects a small diameter portion and a large diameter portion with a step portion extending in a direction perpendicular to the axis, and the drainage port (11) is formed. Flange tube mouth (19)
In addition to being integrated with the above, the configuration in which the water passage hole (18) is provided in the step portion is specified in the configuration of claim 1.

(Operation) Since coarse foreign matter in the circulating cleaning liquid is collected by the strainer pan (14), the liquid stored in the liquid storage tank (3) has few impurities and can sufficiently maintain freshness.

Further, since the overflow pipe (12) is provided with the overflow port (17) on the side wall, the washing liquid and the rinsing liquid which are falling do not flow directly into the overflow pipe (12), and the residue trap pipe (15) Water hole (18), overflow pipe (12)
Since the stored liquid in the storage tank (3) is discharged through the overflow port (17) in order, it is discharged from the lower phase side so that the hot rinse liquid remains in the storage tank (3). become.

Furthermore, a relatively dirty cleaning liquid on the bottom of the storage tank (3),
Fine impurities are also discharged, and the cleanliness of the cleaning liquid can be maintained.

On the other hand, even if the overflow pipe (12) is pulled out, the residue trap pipe (15) is provided, so that the residues of food dregs and the like existing in the liquid storage tank (3) are retained and discharged at the bottom of the tank. There is no such thing.

According to claim 2, since the residue trap pipe (15) and the flange cylinder port (19) are integrated, the structure is compact and liquid-tight is maintained, and the water passage hole (19) is opened substantially horizontally. Therefore, the effect of suppressing the passage of the residue is great.

(Embodiment) An embodiment of the present invention will be described with reference to the accompanying drawings.

A washing machine shown as an example of the present invention in FIG. 1 is a washing chamber (2) for accommodating washing and rinsing dishes (c), and a wide-mouthed pan-shaped unit integrally formed in the lower portion of the washing chamber (2). Formed in a washing room (2)
Liquid storage tank (3), which is the bottom of the tank, rinse tank (4) provided in the upper part near the cleaning chamber (2), lower spray and upper spray that are arranged in the upper and lower two stages in the cleaning tank (2) Each cleaning liquid nozzle for
(5), (5), cleaning liquid nozzle by piping (P ₁ ) on the discharge side
Liquid supply pump (6) connected to (5) and (5), liquid supply port (3 _A ) of storage tank (3), first inflow port is directly connected, rinse liquid tank (4)
Thereby connecting the second inlet port via a pipe (P ₂₎ to the liquid supply ports (4 _A), connects the outlet port to the suction side of the pipe (P ₂₎ liquid feed pump (6) via the A cubic stationary type having a three-way joint pipe (7) arranged in the vicinity of the liquid storage tank (3) in the casing (1).

In the figure, (8) is the solenoid valve for rinsing installed in the pipe (P ₃ ), (9)
Is a cleaning solenoid valve provided at the liquid supply port (3 _A ).

The liquid storage tank (3) is provided with a partition body (10) that covers the upper part of the liquid storage tank (3) to separate it into a cleaning chamber (2) and a liquid storage tank (3), and a drain port (11) is opened at the bottom. Further, an overflow pipe (12) is provided in the tank, which is raised from the drainage port (11) and extends right below the partition body (10).

The partition body (10) is a cleaning liquid nozzle as shown in FIG.
It also serves as a support substrate for supporting (5) and (5), and part of it is formed in a strainer pan (14) described later.

On the other hand, the overflow pipe (12) has a water stopcock (13) made of a ring-shaped rubber fitted on the pipe peripheral wall at the lower end,
When the stopcock (13) is tightly engaged with the drainage port (11), the drainage port (11) is closed and the liquid stored in the liquid storage tank (3) is completely discharged. The overflow pipe (12) is supported in an upright state and communicates with the drain pipe (16) connected to the drain port (11). When the stopper (13) is detached from the drain port (11), the liquid in the liquid storage tank (3) is completely discharged from the drain port (11).

Therefore, the drainage port (11) also serves as an outlet for discharging overflowed overflow water.

The partition body (10) is an overflow pipe as shown in FIG.
The part directly above (12) is at the lowest level and is formed on the plate at the bottom of the taper so as to collect the falling cleaning liquid at this part, and the part at this lowest level, that is, the overflow pipe (12) The strainer pan (14) is provided with a portion immediately above including the portion directly above the strainer pan (14), and the pan (14) is attached to the surrounding partition plate (10) to be removable.

The strainer pan (14) is formed by punching a small diameter of 2 mm so as to allow only water to flow through without passing through a mixture such as food slag.

The strainer pan (14) is not limited to the combination with the partition body (10), and may have a form in which the entire opening surface of the liquid storage tank (3) is covered.

On the other hand, the overflow pipe (12) is a structure in which the top wall is closed and the overflow wall (17) is perforated in the pipe wall near the top. The liquid in the liquid storage tank (3) can overflow.

Around the overflow tube (12) is a residue trap tube (1
5) are provided in a concentric arrangement, and in the example shown in the figure, they are integrated with the flange cylinder port (19) forming the drainage port (11), and are molded into a predetermined shape from hard synthetic resin.

The residue trap pipe (15) is basically composed of a cylindrical body, and is fixed to the bottom of the liquid storage tank (3) in a liquid-tight manner so that the overflow port is formed.
It is set up to a level higher than (17) and has a small diameter water passage hole (18) in the pipe wall at a position slightly higher than the part where the drainage port (11) at the bottom of the liquid storage tank (3) is provided. Is provided through.

The residue trap tube (15) in the illustrated example has a small diameter part (15 _A ) and a large diameter part.
(15 _B ), both parts are connected by a step part extending in the direction perpendicular to the axis to form a stepped tube, and the small diameter part (15 _A ) is connected to the flange tube port (19), and This is a structure in which a plurality of small-diameter water passage holes (18) are provided in the step portion.

In the figure, (20) shows the flange cylinder port (19) as the liquid storage tank (3).
The nuts (21) for fixing to the bottom openings of the seals and (21) are packings for sealing water, respectively.

In the above-described washing machine, the overflow pipe (12) is fitted so that the water stopcock (13) is tightly engaged with the drain port (11),
Also, after the tableware (C) is stored in the washing chamber (2) while standing upright, the overflow pipe (12) is placed in the liquid storage tank (3).
Store a predetermined amount of cleaning liquid until it reaches the upper opening of the
The rinsing solenoid valve (8) is closed and the cleaning solenoid valve (9) is opened to drive the liquid supply pump (6) to perform the cleaning operation in the cleaning cycle. In this case, the liquid after washing is collected in the liquid storage tank (3), the food residue in the liquid is removed by the strainer pan (14), and the filtered liquid is accumulated in the liquid storage tank (3) and supplied. Retransmitted by pump (6).

When a cleaning cycle of a predetermined time is performed, a timer or the like automatically switches the cleaning solenoid valve (9) to be closed and the rinsing solenoid valve (8) to be opened.

Thus, the cleaning cycle is switched to the rinse cycle, and the rinse liquid in the rinse liquid tank (4) is washed liquid nozzles (5), (5).
After rinsing the dishes (C) by squirting from the table, it flows down and is collected in the liquid storage tank (3) .The amount of cleaning liquid corresponding to the collected amount is from the bottom side to the water passage hole (18) and the overflow port ( After passing through 17) in sequence, it is discharged from the overflow pipe (12).

The timer operates at the time when the rinse liquid in the rinse liquid tank (4) is completely discharged, and the liquid supply pump (6) is stopped.
By ending the rinsing operation, one dish washing operation including the washing cycle and the rinsing cycle is completed.

Through the cleaning cycle and the rinsing cycle, the strainer pan (14) removes the food residue and foreign matter in the liquid by the filtering function, and the falling cleaning liquid and the rinsing liquid do not fall directly into the overflow pipe (12).

When draining the liquid in the liquid storage tank (3) after taking out the tableware (C), remove the strainer pan (14), and then lift and rotate the overflow pipe (12) to drain it. Open the mouth (11).

However, during the rinse operation, the residue trap tube (15)
Since the upper rinsing liquid does not flow directly into the overflow pipe (12), the low-temperature rinsing liquid in the bottom layer does not pass through
After passing through (18) and flowing into the residue trap pipe (15) around the overflow pipe (12) and then ascending, the overflow port (17)
Will be discharged from the tank to the outside.

In addition, when the overflow pipe (12) is pulled out for wastewater treatment, the residue trapped at the bottom of the tank does not flow directly into the drain port (11) because the residue trap pipe (15) is upright. Therefore, the residue can be left in the liquid storage tank (3).

(Effect of the Invention) In the present invention, since the overflow pipe (12) has the overflow port (17) on the side wall, the washing liquid and the rinsing liquid that are falling are not directly discharged, and are stored during the rinsing operation. For the liquid discharged in proportion to the rinse liquid used,
By providing (15), the low-temperature cleaning liquid on the bottom side is pumped out, so that the high-temperature rinse water is replaced by the low-temperature cleaning liquid and stored in the liquid storage tank (3). Operation of the heater is minimal and the operating economy is high.

Further, the cleanliness of the cleaning liquid in the tank can be maintained by discharging the dirty cleaning liquid on the bottom of the liquid storage tank (3).

Moreover, the present invention replaces the overflow pipe (12) with a residue trap pipe.
It is possible to lift up from above (15) and remove it from the drain port (11) to discharge all the liquid in the storage tank from the drain port. It is possible to use it as a single drain without having to provide it separately, and the overflow pipe (12) is blocked at the upper end and the washing liquid and the rinsing liquid that are falling during the battlefield cycle and the rinse cycle fall directly into the overflow pipe (12). Nor.

Further, since the residue trap pipe (15) is provided so as to surround the overflow pipe (12) and the water passage hole (18) is opened at a position higher than the bottom, the residue accumulated in the liquid storage tank (3) is retained. Can be prevented from flowing directly into the drain port (11) even if the overflow pipe (12) is pulled out, thus preventing the residue from flowing into the drainage line and eliminating contamination.

According to claim 2, the residue trap pipe (15) is a flange cylinder port.
By being integrally formed with the (19), the drainage port (11) can be well fitted and the liquid tightness can be maintained to sufficiently exhibit the original residue trapping action.

[Brief description of drawings]

FIG. 1 is an overall structural view showing an outline of an example of the present invention, FIG. 2 is a front view of a main part in FIG. 1, and FIGS. 3 and 4 are first views.
FIG. 5 is an enlarged half plan view and a partial cross-sectional enlarged partial front view of the overflow pipe section in the figure. (2) …… washing room, (3) …… storage tank, (11) …… drain outlet, (12) …… overflow pipe, (14) …… strainer pan, (15) …… residue trap pipe, (17) …… Overflow port, (18) …… Water passage port, (19) …… Flange tube port.

Claims (2)

[Scope of utility model registration request] 1. A top wall is closed and an overflow port is formed in a pipe wall near the top.
The overflow pipe (12) provided with (17) is connected to the washing chamber (2).
In the bottom of the storage tank (3), strainer pan (1
Standing lower than 4), a ring-shaped water stop plug (13) is fitted on the peripheral wall of the lower end of the pipe, and the lower end opening is detachably attached to the bottom drain port (11) in a liquid-tight manner. At the same time, the overflow trap (12) is surrounded by a residue trap pipe (15) consisting of a cylindrical body having an open upper part, and the residue trap pipe (15) is a liquid storage tank (3). It is liquid-tightly fixed to the bottom of the liquid tank (3) and stands up to a level higher than the overflow port (17). A washing machine characterized in that it is formed by penetrating 18). 2. A residue trap tube (15) is a stepped cylinder in which a small diameter portion and a large diameter portion are connected by a step portion extending in a direction perpendicular to the axis,
2. The washing machine according to claim 1, wherein the washing machine is integral with a flange cylinder port (19) forming the drainage port (11) and has a water passage hole (18) in the step.