KR960013163B1 - Filter in washing machine for crockery - Google Patents

Abstract

The filter is designed to filter washing water of a tableware washing machine. The filter includes : a concave section (12) formed at the bottom surface (11) of a washing chamber (1a); a tank body (2) suspended to the circumference of an outlet (14); a supporting flange (13) for supporting a circumference section (31) of a filter body (3); and a synthetic resin coating member (33) covering the upper side and the lower side of the circumference section (31).

Description

Filter device for dish washer

1 is a cross-sectional view of a dishwasher equipped with a conventional filter device (F).

2 is a cross-sectional view of a conventional filter device (F).

3 is a support flange (13).

4 is a support flange (13).

5 is a cross-sectional view of the dishwasher equipped with the filter device (F) of the embodiment of the present invention.

6 is an explanatory view of the assembly of the filter body 3 of the embodiment of the present invention.

7 is a cross-sectional view of the filter device F of the embodiment of the present invention.

8 is a plan view of the present invention.

9 is a cross-sectional view of main parts of the present invention.

10 is a bottom view of the first filter 3a.

* Explanation of symbols for main parts of the drawings

1a: cleaning chamber 11: bottom part

14: outlet B: tightening screw

B ₁ : tofu 2: body

13: support flange 31: peripheral part

33: covering material 4: notch

13: concave part

The present invention relates to a filter device for washing filtration mounted on a dishwasher.

In the conventional dishwasher, as shown in FIG. 1, the washing water outlet 14 provided with the washing water stored at the bottom of the washing chamber 1a in the casing 1 at the bottom portion 11 of the washing chamber 1a. ) Is designed to remove contaminants from the object to be cleaned (MXM) by ejecting the water supply circuit (C ₁ ) including the water pump (P ₁ ) to reach the nozzle arm (N). The washing water is discharged from the outlet 14 through the drain circuit C ₃ to the outside of the washing machine.

At the upstream ends of the water supply circuit C ₁ and the drain circuit C ₃ , a filter device F is installed to remove debris contained in the washing water.

As a conventional thing in such a filter apparatus F, there exist some which were disclosed by Unexamined-Japanese-Patent No. 63-153036.

As disclosed in FIG. 2, the inlet 12 is formed in a portion of the bottom 11 and at the same time, an outlet 14 is provided in the bottom wall, and the outer peripheral portion of the outlet 14 is supported. And the support flange 13 while integrating the upper end of the cylinder 2 provided with the flange 13 provided with the seat portion and the drain port 22 connected to the water supply circuit C ₁ and the drain circuit C ₃ . ) Is configured to support the peripheral portion 31 of the filter body (3).

The peripheral portion 31 has a structure in which a synthetic resin coating material 33 is coated over both the upper and lower sides.

In order to integrate the above-mentioned cylinder 2 and the support flange 13, there is also a method of spot welding, but during this welding work, it is necessary to treat the cleaning chamber 1a in a large box state together, and the working conditions are poor. This is not good.

In addition, when the cylinder 2 is made of synthetic resin, it is not connected.

Therefore, as shown in FIG. 3, the tightening screws B and B penetrated from the upper portion of the support flange 13 while the packing chamber D is interposed between the cylinder 2 and the support flange 13. The structure which screwed in the state which suspended the cylinder 2 by is employ | adopted.

However, in this case, the coating material of the pressure screw (B) (B) of the head (B _1), (B ₁₎ a support flange 13, the filter body 3 doemeuro projecting on the upper surface of, as illustrated in figure 3 also ( A gap equal to the height of the heads B ₁ and B ₁ occurs between the top and bottom 33 between the support flange 13 and the support flange 13.

Since the upper and lower intervals are relatively large, the washing water passes therethrough, and a relatively large residue contained in the washing water wind leaks into the cylinder 2 in a large amount, thereby reducing the effect of removing the residue by the filter body 3.

In order to prevent this, it can be considered to eliminate or eliminate the gap in the horizontal direction between the covering material 33 and the recessed part 12 main wall, but here the covering material 33 and the main wall and the filter body 3 are detached. It is easy to attract, and the removal tank making falls remarkably.

On the other hand, in order to solve the problem of the residual leakage and the detachable operation of the filter main body (3), as shown in Figure 4 as shown in Figure 4 the mounting flange 15 protrudes from the support flange 13 on the inner circumferential side and the mounting flange ( It is also conceivable to screw the cylinder 2 to 15).

In this case, the head B ₁ (B ₁ ) does not protrude from the support flange 13, and the leakage of the remnants is prevented due to the close contact between the support flange 13 and the cover material 33, and at the same time, the filter body is enlarged by increasing the horizontal interval. Desorption of (3) takes place flexibly.

However, here, there is a problem that the capacity of the cylinder 2 becomes smaller than that described above because the inner diameter of the cylinder 2 with respect to the support flange 13 becomes smaller.

The present invention has been made in view of this point, and the concave inlet 12 is formed in a part of the bottom 11 of the cleaning chamber 1a, and the outlet 14 is formed in the bottom of the concave inlet 12. The outer circumferential surface of (14) is composed of a support flange (13) for hanging the tubular body (2), which is a connection portion with the downstream circuit, to which the filter body (3) is accommodated in the recess (12). In the upper surface of the support flange (13) and the peripheral portion (31) is a filter device for dishwasher, covering the synthetic resin coating material 33 over both upper and lower sides, The task is to improve the effect of attaching and detaching and removing the residue of the filter main body 3 while securing the capacity.

Technical means of the present invention for solving the above problems is to fix the cylinder (2) by the fastening screw (B) (B) penetrated from above the support flange 13 to the lower half (33a) of the coating material 33 The cylinder 2 is fixed by the tightening screws B and the lower half 33a of the coating material 33 corresponds to the installation interval of the tightening screws B and the heads B ₁ ( Notch portion (4) (4) larger than B ₁ ) is provided.

The technical means of the present invention has the following operational effects.

The peripheral part 31 of the filter main body 3 is supported by the support flange 13.

At this time, the support flanges 13 of the tightening screws B and B face each other in order to stop the lower half 33a of the covering member 33 covering the periphery 31 and the body 2 with screws.

However, the lower half portion 33a is provided with notches 4 and 4 that are larger than the heads B ₁ and B ₁ , which are consistent with the installation intervals of the tightening screws B and B, thereby supporting the peripheral portion 31. In a state where it is placed on the flange 13, all or most of the heads B ₁ and B ₁ are immersed in the notches 4 and 4.

By such a configuration, the upper and lower intervals of the covering material 33 and the support flange 13 are addressed.

Therefore, when the washing water in the washing chamber 1a is passed through this filter device, the relatively large residue contained in the washing water does not leak into the cylinder 2 without the washing water passing most of the upper and lower intervals.

In addition, since the passage of the washing water is almost blocked at this portion, even if the distance between the covering material 33 and the peripheral wall of the concave portion 12 is increased, the remnant of the residue is not generated.

Since this invention consists of the said structure, it has the following peculiar effects.

The washing water in the washing chamber Ia does not pass mostly between the covering material 33 of the filter body 3 and the support flange 13, and relatively large residues contained in the washing water leak into the cylinder 2. Therefore, the effect of removing the residue on the filter main body 3 is improved.

Further, even if the distance between the covering member 33 and the peripheral wall of the concave portion 12 is increased, the above-mentioned residual material is prevented from leaking, so that the detachable operation of the filter body 3 is improved.

Moreover, since the diameter of the cylinder 2 is set to the same extent as the diameter of the support flange 13, the inner diameter of this cylinder 2 can be enlarged and the capacity can be ensured enough.

In the mounted state of the filter main body 3, the periphery 31 and the head (B _1), (B ₁₎ with a lower half (33a) of the cover material 33 is not interposed between cleaning the upper end of the cover material 33 chamber When accommodated in the concave inlet portion 12 so as not to protrude upward from the bottom portion 11, the height from the support flange 13 to the bottom portion 11 is smaller than the conventional one described above.

Therefore, the workability of tightening processes at the time of forming the recessed part 12 is improved.

Embodiments of the present invention will be described with reference to the drawings.

In this embodiment, as shown in Fig. 5, the filter device F of the present invention is implemented in a conventional dishwasher. The dishwasher is a washing chamber in which the front of the casing 1 is opened as shown in the same drawing. The rack which forms (1a) and is closed by the door T which opens and closes this front opening part up and down, and accommodates the to-be-cleaned object M (M) in the upper and lower sides in the said washing chamber 1a ( R) (R) is disposed, and nozzle arms (N) (N) are installed in order to flush the washing water under these racks (R) (R), and are cleaned in the front part 11 of the cleaning chamber 1a. The filter device F including the outlet 14 of the water is connected, and the filter device F communicates with the water supply circuit C including the water pump R between the filter device F and the nozzle arm N. It is a structure connected very much.

The washing chamber 1a is formed of a box of square cross-section that is opened forward, and the lower side of the open end is set to a predetermined dimension higher than the bottom 11 of the washing chamber 1a. (1a) A water storage chamber for washing water of a predetermined depth is formed on the bottom surface.

In the front portion of the bottom portion 11, an outlet 14 to be described later is provided.

The nozzle arm (N) (N) in the cleaning chamber (1a) is rotated by a support (G) connected to the bottom portion (11) and a support (G) connected to the end of the support arm protruding from the rear wall of the cleaning chamber. The freely squeezed and passed through the bottom portion 11 to the lower nozzle arm (N) is connected to the discharge port of the water pump (P ₁ ), the connection circuit with the lower nozzle arm (N) (C ₁₁₎ ), The discharge port is connected through.

The inlet port of the water feed pump P ₁ is connected to the cylinder 2 described later.

In addition, as shown in FIGS. 7 and 8, the bottom portion 11 is provided with a concave portion 12 that is substantially rectangular in plan view, and at the same time, the bottom portion 11 has the same center as the concave portion 12. The branch is provided with a rectangular outlet 14.

The outer circumferential portion of the outlet 14 has a support flange 13 of a constant width, and under the support flange 13 is screwed in a state in which the rectangular cylindrical body 2 is suspended through the racking chamber D. The periphery 31 of the filter main body 3 is supported on the support flange 13.

In this embodiment, and more of the support flanges (13) the head (B _1), (B ₁₎ of the pressure screw (B) (B) wherein the width of the diameter is set to a slightly larger value.

In this embodiment, the cylinder 2 is made of polypropylene resin, and an upper end portion thereof is provided with an annular projection portion 21 exposed to the outside so as to be visible on the outer circumferential side.

The size of the inner and outer circumferences of the annular protrusion 21 is substantially coincident with the support flange 13, and the head B ₁ (B) of the tightening screws B and B for stopping the annular protrusion 21 is screwed. ₁ ) protrudes from the upper surface of the support flange 13.

In the center of the bottom face of the cylinder 2, a drain outlet 22 is provided, and as shown in FIG. 5, a pipe connected to the lower part of the drain outlet 22 branches in the direction, so that the water supply circuit C ₁ and the drain circuit C ₃ It is connected to the pipe which comprises).

The filter body 3 described above is accommodated in the first filter 3a in the form of a flat plate having a wide top and an opening 349 provided at the bottom center thereof, as shown in FIGS. 6 to 8. It is composed of a conventional second filter (3b) and disposed therein, and the bottom of the conventional third filter (3c) and the like, each filter is provided with respective handle portions (30a) 30b (30c) have.

In this state, as shown in FIG. 7, the lower end of the second filter 3b is connected to the bottom surface of the cylinder 2 in a form surrounding the drain port 22 in the mounting state of each filter. The annular upright piece 23 for positioning the lower end of the 2nd filter 3b around the drain opening 22 is protruded in the bottom face.

The first filter 3a is formed of a stainless steel punching plate provided with a plurality of small perforations A and A, as shown in Figs. 6 to 8, and at the same time its peripheral portion 31 is rectangular, It is formed of a flat annular plate.

As shown in Figs. 9 and 10, the peripheral portion 31 is coated with a polypropylene resin covering material 33 having a horizontal U-shaped cross section over both the upper and lower sides thereof, and the lower half portion 33a thereof. ), there is provided a head _{(B 1) ((4)} (4) slightly greater cutout than B ₁₎ in response disposed interval of the tightening screw (B) (B) as shown in 10 Figure in the drawing 8 even .

That is, in this embodiment, the upper thickness dimension of the lower half portion 33a is set to a value which is slightly smaller than the height of the head B ₁ (B ₁ ) of the tightening screw B, B, and the notch portion ( 4) (4) is in the head (B _1), (B ₁₎ is added straight to open on the inner circumferential surface of the cover material 33 in the semicircular arc-shaped portion of slightly larger diameter than the hook-up configuration.

As shown in Figs. 6 and 7, the second filter 36 described above is made of polypropylene resin and has a fine hole (diameter) around the inner side of the ordinary skeleton 35 in which four large openings are formed in the eastern part. 0.2 mm) is equipped with the stainless steel screen 36 provided with a myriad of numbers.

And on the outer periphery of the upper end of the said normal frame | skeleton 35, the engaging piece 37 which fits in the side edge part of the said opening part 34 is provided in the circumference | surroundings.

As shown in Fig. 5, a water supply port 61, which is a downstream end of the water supply circuit C ₂ , is opened in the upper rear wall of the cleaning chamber 1a, and the cleaner is disposed through the water supply circuit C ₂ . The washing water is supplied to the washing chamber 1a from the outside.

In addition, in the cleaning chamber 1a, a sensor tube having a water level sensor S for detecting a low water level is installed in the inlet of the water feed pump P ₁ , and when the outgoing value of the water level sensor S becomes a set value. The opening / closing edge 62 is closed.

The drainage circuit C _{3 is} provided with a drainage pump P ₂ , from which the downstream side is drawn out from the rear wall of the casing 1.

After storing a small amount of washing water in the washing chamber 1a of the dish washing machine having the above-described configuration, and operating the water pump P ₁ , the washing water passes through the nozzle arm N through the water feeding circuit C ₁ . In (N), it is sprayed on the tableware which is the to-be-cleaned object M (M) accommodated in the rack R (R).

At this time, the residue or the like attached to the object to be cleaned (M) (M) is washed with the washing water and then falls to the lower portion of the cleaning chamber (1a).

The washing water containing this residue is sucked into the cylinder 2 through the outlet 14 by the operation of the water feed pump P ₁ .

At this time, the residue is collected in each filter of the filter main body 3, and the washing water is again conveyed to the nozzle arms N.

At this time, most of the remnants are collected in the first filter 3a and the relatively large remnants reach the third filter 3c and then, depending on the relationship between the width of the long holes provided in the third filter 3c and the diameter of the holes, 3 is collected by the filter 3c.

The periphery of the support flange 13 and the first filter 3a is opposed to each other, but in the state where the upper half 3a of the covering material 33 of the periphery 31 is centrifuged, the notches 4 and 4 are formed. Since most of the tightening screw heads B ₁ and B ₁ are immersed in the inside, the vertical gap generated between the covering material 33 and the support flange 13 is minimized.

Therefore, a relatively large residue contained in the washing water does not leak into the cylinder 2.

Moreover, even if the filter main body 3 is set so that attachment and detachment of the filter main body 3 is easy between the outer periphery of the coating material 33 and the circumferential wall of the inlet 12, remnant leakage does not occur.

In this embodiment, the second filter 3d is provided in order to collect even fine residues that penetrate through the perforations A and A of the first filter 3a and the upper and lower intervals.

That is, since the lower end of the second filter 3d is in contact with the bottom surface of the cylinder 2 in the form of surrounding the drain 22, the fine residue remains over the entire outer surface of the second filter 3b schooling 36. The washing water enters into the second filter 3b in the form of being collected in and flows out toward the drain 22.

When the cleaning operation is completed, the drainage pump P ₂ is operated so that the stored washing water is discharged to the outside of the scrubber through the filter device F and the drainage circuit C ₃ . Remnants are recruited.

Thereafter, the object to be cleaned M is dried by the drying air from the air supply device K provided in the casing 1.

In order to remove the residue collected on the filter main body 3, the door T is opened, the second filter 3b is lifted out together with the third filter 3c, and the first filter 3a is lifted up to remove each filter. Clean it.

As another embodiment

(1) The filter body 3 is not limited to the above embodiment but may be other configurations.

(2) In the above embodiment, the notches (4) and (4) are opened on the inner circumferential surface of the covering member 33, but may be configured in such a state that they are not opened.

That is, it may be a round hole.

Claims (1)

The recessed part 12 is formed in a part of the bottom part 11 of the washing | cleaning chamber 1a, the outlet 14 is opened in the bottom part of this recessed part 12, and it is downstream from this in the outer peripheral part of the weaning outlet 14 The upper surface of the support flange 13 has a peripheral portion 31 of the filter body 3 accommodated in the concave portion 12 together with a support flange 13 for connecting the circuit 2 to be connected to the circuit in a hanging form. In the filter device for dishwasher, the peripheral portion 31 is covered with a synthetic resin coating material 33 through the upper and lower surfaces, the screw (B) (B) (B) penetrated from above the support flange (13). ) stop screw the cylinder 2 by the lower half (33a) of the covering (33) in correspondence with the pressure screw (B) (B) excretion interval greater notched than those of the head (B _1), (B ₁₎ ( 4) (4) dishwasher filter device.