JP5155931B2 - Dishwasher filter - Google Patents

Description

  The present invention relates to a filter for a dishwasher that is mounted on the upper part of a water reservoir that is provided in a bottom surface of a washing tank of a dishwasher and communicates with a pump that sucks water in the washing tank.

  Conventionally, this type of leftover filter is formed in a dish shape having an outer peripheral flange portion that sits on the upper portion of the water pool portion, and concave portions that are recessed below the outer peripheral flange portion and have a large number of small holes. ing. And when the water in a washing tank is sucked with a pump, the leftovers contained in water are collected with a filter.

  By the way, when bubbles of air are generated below the filter, if the small holes of the filter are clogged, the bubbles will not easily pass through the small holes, and air may accumulate on the lower surface of the outer peripheral flange portion of the filter. There are many. When the amount of air accumulated on the lower surface of the outer peripheral flange portion exceeds a certain limit, the air pushes up the filter and escapes upward. When the air escapes, the filter sinks, but when the filter sinks, the filter is displaced, leaving a gap between the filter mounting part of the water reservoir and a part of the outer peripheral flange, and leftovers that have entered through this gap. May be sucked into the pump and cause pump failure.

  Therefore, conventionally, a notch is formed in a part of the outer peripheral flange, a cylinder extending upward is attached to the notch, and the air accumulated on the lower surface of the filter is discharged from a deaeration hole formed in the upper part of the cylinder. A filter configured to do this is also known (see, for example, Patent Document 1).

  However, in this case, since the height of the lower end of the cylindrical body is the same as the height of the outer peripheral flange portion, the air accumulated on the lower surface of the outer peripheral flange portion away from the cylindrical body is difficult to flow into the cylindrical body. As a result, the filter may be pushed up to cause the above-mentioned problem.

JP-A-7-116100

  In view of the above points, an object of the present invention is to provide a dishwasher filter that can effectively prevent push-up due to air accumulated on the lower surface of the filter.

  In order to solve the above-described problems, the present invention provides a dishwasher mounted on an upper portion of a water reservoir that is recessed in a bottom surface of a washing tank of a dishwasher and communicates with a pump that sucks water in the washing tank. A filter for a machine, an outer peripheral flange portion seated on the upper part of the water reservoir, a concave portion recessed below the outer peripheral flange portion, and an upper side of the outer peripheral flange portion adjacent to one side of the concave portion A filter body having a bulging convex part and forming a large number of small holes in the concave part and the convex part; And a horizontal direction perpendicular to the direction in which the concave portion and the convex portion are arranged in the front-rear direction, and the front-rear direction dimension of the convex portion is equal to or larger than the front-rear direction dimension of the concave portion. It is characterized by being set above.

  According to the present invention, since the convex portion is located above the outer peripheral flange portion, the air accumulated on the lower surface of the outer peripheral flange portion on the convex portion side is introduced into the convex portion. In addition, since the front-rear width of the convex portion is equal to or greater than the front-rear width of the concave portion, the air accumulated on the lower surface of the outer peripheral flange portion on the concave portion travels along the outer peripheral flange portions on both front and rear sides. It becomes easy to be introduced. Therefore, the air accumulated on the lower surface of the outer peripheral flange portion can be guided to the convex portion and discharged through the cylindrical body, and the filter can be effectively prevented from being pushed up by the air.

  In addition, it is possible to erect a cylindrical body having the same cross-sectional area as that of the convex portion at the same place as the convex portion without forming the convex portion. It becomes only a recess. On the other hand, in the present invention, it is possible to collect the leftovers not only in the concave portions but also in the convex portions other than the standing portions of the cylindrical body.

The typical cutting side view of the dishwashing equipment which comprises the filter of an embodiment of the present invention. The expanded sectional view cut | disconnected by the II-II line | wire of FIG. The perspective view of the filter of an embodiment. The top view of the filter of other embodiments.

  FIG. 1 shows a dishwasher. This dishwasher includes an outer case 1 and a cleaning tank 2 in the outer case 1, and water is supplied into the cleaning tank 2 through a water supply path 3 provided with a water supply valve 3 a. The washing tub 2 is provided with a tableware basket 2a on which the tableware W is placed, a washing nozzle 4 for injecting washing water toward the tableware basket 2a, and a heater 5.

  A water reservoir 6 is recessed at the bottom of the cleaning tank 2. Further, a cleaning / drainage pump 7 communicating with the water reservoir 6 through a hole 6a formed in the water reservoir 6 is provided, and further, a float type that detects the water level in the cleaning tank 2 by communicating with the water reservoir 6. A water level sensor 8 is provided.

  Here, when the cleaning / drainage pump 7 is rotated forward, the cleaning water is circulated in the cleaning tank 2 via the cleaning nozzle 4, and when the cleaning / drainage pump 7 is reversed, the cleaning water in the cleaning tank 2 is drained. It is drained through the passage 9. The drainage channel 9 is provided with a reverse U-shaped rising part 9a for preventing backflow, an air vent part 9b, a drain trap part 9c, and a check valve 9d. Further, a drying fan 10 that blows air for drying into the cleaning tank 2 is provided in the exterior case 1.

  When the operation switch of the dishwasher is turned on, water is first supplied to the washing tub 2 until a predetermined water level is reached, and detergent is mixed into this water from a detergent supply means (not shown) to generate washing water. Then, after the water supply is stopped, the heater 5 is energized and the cleaning / drainage pump 7 is rotated forward so that the cleaning water is sprayed from the cleaning nozzle 4 while being heated, and a cleaning operation for a predetermined time is performed. After completion of the washing operation, the washing / drainage pump 7 is reversed to drain the washing water in the washing tank 2, and then the washing tank 2 is supplied with water until it reaches a predetermined water level. Then, water is jetted from the cleaning nozzle 4 to perform a rinsing operation for a predetermined time. After the rinsing operation is completed, the cleaning / drainage pump 7 is reversed to drain the water in the cleaning tank 2, and then the heater 5 is energized and the drying fan 10 is driven to perform a drying operation for a predetermined time.

  A filter 11 that collects leftovers contained in the water in the cleaning tank 2 is attached to the upper part of the water reservoir 6 so that the leftovers are not sucked into the cleaning / drainage pump 7. As shown in FIGS. 2 and 3, the filter 11 includes an outer peripheral flange portion 111 that sits on the funnel-shaped portion 6 b above the water reservoir 6, a concave portion 112 that is recessed below the outer peripheral flange portion 111, and a concave portion 112. The filter body 110 is made of stainless steel having a rectangular shape in plan view, and has a convex portion 113 bulging upward from the outer peripheral flange portion 111 adjacent to one side. The outer peripheral flange portion 111 is formed with reinforcing ribs 111a that bulge upward.

  The horizontal direction orthogonal to the direction in which the concave portion 112 and the convex portion 113 are juxtaposed (the longitudinal direction of the filter body 110) is the front-rear direction, and the front-rear direction dimension of the convex portion 113 is set to be equal to the front-rear direction dimension of the concave portion 112. Yes. Then, a large number of small holes 114 are formed in the concave portion 112 and the convex portion 113 so that the remaining vegetables larger than the small holes 114 are collected by the concave portion 112 and the convex portion 113.

  An opening 115 larger than the small hole 114 is formed in a part of the convex portion 113 (in the present embodiment, the central portion in the front-rear direction). The filter 11 includes a resin cylinder 116 extending upward from the opening 115. A plurality of deaeration holes 116a are formed in the upper part of the cylindrical body 116 positioned above the water level at the time of cleaning. The cylinder 116 is also used as a handle, and the filter 11 can be removed by holding the cylinder 116.

  Here, if there is no protrusion 113 and cylinder 116, when air bubbles are generated below the filter 11, air accumulates on the lower surface of the outer peripheral flange portion 111 of the filter 11, and this air amount exceeds a certain limit. The air pushes up the filter 11 and escapes upward. When the air escapes, the filter 11 sinks. However, when the filter 11 sinks, the position of the filter 11 is displaced, and a gap is left between the funnel-shaped portion 6b of the water reservoir 6 and a part of the outer peripheral flange portion 111. There are cases where the leftovers that have entered through are sucked into the cleaning / drainage pump 7 and the cleaning / drainage pump 7 fails.

  According to the filter 11 of the present embodiment, since the convex portion 113 is positioned above the outer peripheral flange portion 111, air accumulated on the lower surface of the portion of the outer peripheral flange portion 111 on the convex portion 113 side is introduced into the convex portion 113. The Further, since the front-rear direction width of the convex portion 113 is equal to the front-rear direction width of the concave portion 112, air accumulated on the lower surface of the outer peripheral flange portion 111 portion on the concave portion 112 side travels along the outer peripheral flange portion 111 portions on both front and rear sides. It becomes easy to be introduced into the convex portion 113. Therefore, the air accumulated on the lower surface of the outer peripheral flange portion 111 can be guided to the convex portion 113 and discharged through the cylindrical body 116, and the push-up of the filter 11 by air can be effectively prevented.

  Even if the cylindrical body having the same cross-sectional area as the convex portion 113 is erected at the same place as the convex portion 113 without forming the convex portion 113, the same air venting effect as in the above embodiment can be obtained. However, in this case, only the concave portion 112 is a part where the leftovers can be collected. On the other hand, in the above-described embodiment, not only the concave portion 112 but also the portion of the convex portion 113 other than the standing portion of the cylindrical body 116 can collect the leftovers, and there is an advantage that the collectable area increases. .

  In the above embodiment, the front-rear direction width of the convex portion 113 is made equal to the front-rear direction width of the concave portion 112, but the front-rear direction width of the convex portion 113 is made larger than the front-rear direction width of the concave portion 112. The convex part 113 may be formed so as to straddle the ribs 111a and 111a formed on the outer peripheral flange parts 111 and 111 on both the front and rear sides. According to this, air accumulated on the lower surface of the outer peripheral flange portion 111 on the concave portion 112 side is efficiently introduced into the convex portion 113 via the rib 111a, and the air venting effect is further improved.

  DESCRIPTION OF SYMBOLS 2 ... Washing tank, 6 ... Water reservoir, 7 ... Pump, 11 ... Filter, 110 ... Filter body, 111 ... Outer peripheral flange, 112 ... Recess, 113 ... Convex, 114 ... Small hole, 115 ... Opening, 116 ... Cylinder, 116a ... deaeration hole.

Claims (1)

To collect residual vegetables contained in the water in the washing tank at the upper part of the water reservoir connected to the pump that sucks the water in the washing tank, recessed in the bottom of the washing tank of the dishwasher A filter for a dishwasher to be installed,
It has an outer peripheral flange portion that sits on the upper part of the water pool portion, a concave portion that is recessed below the outer peripheral flange portion, and a convex portion that is adjacent to one side of the concave portion and bulges upward from the outer peripheral flange portion. And a filter body formed by forming a large number of small holes in the concave and convex portions,
A cylindrical body that is opened in a part of the convex part, extends upward from an opening larger than the small hole, and has a deaeration hole formed in the upper part;
For a dishwasher, wherein the horizontal direction perpendicular to the direction in which the concave portion and the convex portion are arranged is the front-rear direction, and the front-rear direction dimension of the convex portion is set to be equal to or greater than the front-rear direction dimension of the concave portion. filter.

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