JP4489689B2 - dishwasher - Google Patents

Description

  The present invention relates to a dishwasher.

  Generally, the washing tank has a structure that supports a tableware basket on which tableware is placed in a hollow state. In the washing tank, there is provided a rotating nozzle that injects washing water toward the dishes placed in the dish basket. The rotary nozzle is provided on at least one of the upper side and the lower side of the installation space of the tableware basket.

  In order to improve the washing performance of the dishwasher, it is essential that the washing water jet reaches directly to the dishes. However, the rotary nozzle is basically designed for vertical injection, and when a large number of dishes are placed in a tableware basket, a lot of space is created that is shadowed by the injection of the rotary nozzle. It may happen that it becomes difficult to reach the cleaning water of the tableware.

  Therefore, in the dishwasher, when the inlet / outlet side of the washing tub is the front side, a fixed pipeline is provided along the rear wall of the washing tub, and washing water is pumped to the fixed pipeline, and the fixed pipeline There is one provided with a fixed cleaning nozzle that sprays cleaning water from the injection port formed on the side toward the tableware basket (see Patent Document 1).

  According to the fixed cleaning nozzle of the above-mentioned Patent Document 1, it is necessary to add a fixed pipeline along the rear wall of the cleaning tank, but without being forced to increase the size of the cleaning tank or the size of the tableware basket, The washing water jet from the rear side can be realized for the tableware basket.

JP 2004-321461 A (FIG. 1)

  However, in the fixed washing nozzle of Patent Document 1, washing water can be sprayed only from the rear side to the tableware basket, and there is a limit to improving the washing performance.

  Accordingly, an object of the present invention is to further improve the cleaning performance by adding one pipe line while avoiding an increase in the size of the cleaning tank and the size of the tableware basket.

  In order to solve the above-mentioned problem, the present invention provides a washing water injection port in a fixed pipe line along the side wall of the cleaning tank, and jets the cleaning water from the injection port toward the tableware basket in the cleaning tank. In the dishwasher, when the side of the washing tub with the inlet / outlet is defined as the front side, the fixed pipe line includes an intermediate pipe part along a portion between the left and right walls of the side wall, and the left side from the intermediate pipe part. It has a left pipe part along the wall and a right pipe part along the right wall from the intermediate pipe part, and the injection port is provided in each of these parts.

  Here, “the portion between the left and right walls of the side wall” is the upper wall, the lower wall, the front wall, and the rear wall of the cleaning tank.

  Specifically, the fixed pipe line is one pipe line having the intermediate pipe part and the left and right side pipe parts, and one of the upper and lower sides and the front and rear sides with respect to the tableware basket by the injection port of the intermediate pipe part The washing water is sprayed from the left and right side pipe parts, and the washing water can be jetted from both the left and right sides to the tableware basket.

  In the above configuration, a rotating nozzle can be appropriately provided on the upper side and / or the lower side of the tableware basket, and the intermediate pipe portion is arranged along the upper wall or the lower wall of the washing tank in place of the rotating nozzle. Can be provided.

  As described above, the present invention adopts the above-described configuration to avoid the increase in the size of the washing tank and the size of the tableware basket, and the washing water jet from the three sides to the tableware basket with the addition of one pipeline. Therefore, the cleaning performance can be improved as compared with the conventional example.

An embodiment of the present invention will be described below with reference to the accompanying drawings.
As shown in FIGS. 1 and 2, the dishwasher according to this embodiment is configured such that tableware baskets 21 and 22 are installed in the upper and lower stages in the washing tub 10, and the operation content set by the switch operation. Accordingly, the cleaning water is sprayed into the cleaning tank 10, a circulation cleaning process is performed in which the cleaning water dropped on the bottom of the cleaning tank 10 is sucked and sprayed again, and then the cleaning water is drained.

  The tableware baskets 21 and 22 have a structure that restricts the arrangement and orientation of tableware. Specifically, the tableware basket 21 will be described as an example. As shown in FIG. 4, the tableware basket 21 is parallel to each other between a rectangular frame 21a made of a wire, and between a long side and a short side of the rectangular frame 21a. It consists of a plurality of support frames 21b spanned and a plurality of corrugated frames 21c spanned between the support frames 21b. The wavy frame 21c has a teacup (not shown) hung between adjacent ridges so that the teacup is held in a standing position, and a small plate or the like is erected between adjacent ridges. There is a standing one that holds in posture. If a mounting structure corresponding to the shape of the tableware is provided by using a plurality of frames having the same shape like the wavy frame 21c, it becomes possible to avoid the manufacture of frames having different shapes as much as possible. Manufacturing cost can be suppressed.

  As shown in FIGS. 1, 2, and 3, the washing tank 10 is provided in a substantially rectangular parallelepiped shape as a whole, and the opening / closing port of the tableware baskets 21 and 22 is opened and closed by the upper and lower doors 11 and 12. It has become. When the front side of the cleaning tank 10 is the front side, the side wall of the cleaning tank 10 is continuous with the upper and lower doors 11 and 12, the left and right walls 13 and 14, and the rear end sides of the left and right walls 13 and 14. It consists of a wall 15 and a front wall 16 that closes with the lower end of the lower door 12.

  A washing water pool having a suction port for the washing water circulation path is formed at the bottom of the washing tank 10, and a heater for heating washing water and blowing air when drying the dishes is provided in the washing water pool space.

  The upper wall 17 and the lower wall 18 of the cleaning tank 10 are provided with a rotation support mechanism for rotating nozzles 31 and 32 for injecting cleaning water to the table baskets 21 and 22 side.

  On the left and right walls 13, 14 of the cleaning tank 10, front and rear rail stands 23, 24 that support the tableware baskets 21, 22 in a hollow manner are attached. The tableware baskets 21 and 22 are installed so as to be inserted on the rail stands 23 and 24 in a state where the tableware is placed.

  The rear wall 15 of the cleaning tank 10 is provided with a pressure feed line 25 that constitutes a part of the cleaning water circulation path and guides the cleaning water to the upper rotary nozzle 31. The pressure feeding line 25 is connected to the outlet side of the pump P provided between the cleaning tank 10 and the outer case in the cleaning tank 10. The reason why the pressure feeding line 25 is connected in the cleaning tank 10 is that it can be drained from the suction port without any problem even if the connection is broken.

  Moreover, the washing tank 10 is provided with a fixed washing nozzle in which a washing water injection port 41 is formed in a fixed conduit 40 along the side wall of the washing tank 10 as a whole.

  The fixed pipe line 40 includes an intermediate pipe part 42 extending along the portion between the left and right walls 13, 14, a left pipe part 43 extending from the intermediate pipe part 42 along the left wall 13, and from the intermediate pipe part 42 to the right wall 14. And a right-hand pipe portion 44 that extends.

  Specifically, as shown in FIG. 5A, the intermediate tube portion 42 is substantially T-shaped when viewed from the front side, and is provided along the rear wall 15. The lower end of the vertical portion of the intermediate pipe portion 42 is connected to the outlet side of the pump P in the cleaning tank 10 as shown in FIG. A lateral portion of the intermediate pipe portion 42 is located between the rail bases 23 and 24 in the vertical direction. A plurality of injection ports 41 are formed in the lateral part of the intermediate pipe part 42 toward the front side, and the wash water pumped into the vertical part of the intermediate pipe part 42 is from the lower rear side with respect to the tableware basket 21. Then, it is sprayed from the upper rear side to the tableware basket 22 (see FIG. 1).

  The right side pipe part 44 is formed so as to protrude forward along the right wall 14 from the lateral part of the intermediate pipe part 42. This protrusion length can be appropriately determined within a range that does not interfere with the tableware baskets 21 and 22. It is located between the steps of the tableware baskets 21 and 22 in the vertical direction. The right side pipe part 44 communicates with the lateral part of the intermediate pipe part 42, and the wash water pumped into the intermediate pipe part 42 reaches the right side pipe part 44. Near the upper corner of the front end of the right side pipe portion 44, an injection port 41 directed toward the left front side is formed, and wash water is injected from the injection port 41 into the tableware basket 21 from the right rear side. In addition, since the said left side pipe part 43 has a left-right symmetric relationship with the said right side pipe part 44, the description is abbreviate | omitted.

  As described above, in this embodiment, the intermediate tube portion 42 and the left and right side tube portions 43 and 44 are provided in a single conduit using a narrow unused space, and the upper tableware basket 21 and Since the washing water is jetted from the rear side and the left and right sides of the tableware basket 22 on the lower side, the washing performance can be improved while avoiding an increase in the size of the washing tank and the size of the tableware basket. .

  In this embodiment, the fixed pipe line 40 is provided so that the horizontal part of the intermediate pipe part 42 and the left and right side pipe parts 43 and 44 have an upward slope from the upper end of the vertical part of the intermediate pipe part 42. . For this reason, after the pumping of the washing water is stopped, the remaining water in the fixed pipe 40 is drained through the vertical part of the intermediate pipe part 42.

  Further, in the fixed pipe 40, the intermediate pipe part 42 and the left and right side pipe parts 43 and 44 are integrally formed by screwing the groove plate and the back plate, but the present invention is not limited thereto. The lateral part of the part 42 and the left and right side pipe parts 43 and 44 can also be constituted by a single flexible pipe member.

  Moreover, although the said injection port 41 was made into the opening formed in the groove plate, it is not limited to this, It can be set as the structure which attached | subjected another members, such as a cylindrical member. Moreover, the number, arrangement | positioning, and direction of the injection port 41 formed in the right and left side pipe parts 43 and 44 can also be changed suitably.

  In addition, the fixed pipe 40 is fixed by screwing the back plate to the rear wall 15 of the cleaning tank 10, but is not limited thereto, and is sandwiched between the upper wall 17 and the lower wall 18 of the cleaning tank 10. be able to.

  Further, the intermediate pipe portion 42 can be provided along any one of the front wall 16, the upper wall 17, and the lower wall 18, which is a portion between the left and right walls 13, 14 among the side walls of the cleaning tank 10. . For example, instead of the rotary nozzle 31, the intermediate pipe portion 42 can be fixed to the upper wall 17 of the cleaning tank.

Sectional drawing which shows the whole structure of the dishwasher which concerns on embodiment The principal part expansion perspective view which shows the fixed pipe line of the dishwasher of FIG. Whole perspective view of the dishwasher of FIG. (A) Enlarged perspective view of the upper tableware basket in FIG. 1, (b) Partial enlarged plan view of FIG. 4 (a) (A) Front view of fixed pipe line in FIG. 1, (b) Cross-sectional view along line bb in FIG. 5 (a), (c) Cross-sectional view along line cc in FIG. 5 (a)

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Washing tank 11 Upper door 12 Lower door 13 Left wall 14 Right wall 15 Rear wall 16 Front wall 17 Upper wall 18 Lower wall 21, 22 Tableware basket 23, 24 Rail base 25 Pressure feed line 31, 32 Rotating nozzle 40 Fixed pipe 41 injection port 42 intermediate pipe part 43 left side pipe part 44 right side pipe part

Claims (1)

In a dishwasher in which a washing water injection port is provided in a fixed pipe line along the side wall of the washing tank, and the washing water is sprayed from the injection port toward the dish basket side in the washing tank, and the washing tank is taken in and out When the side with the mouth is the front side, the fixed pipe line is an intermediate pipe part along a portion between the left and right walls of the side wall, a left pipe part from the intermediate pipe part along the left wall, and the intermediate pipe part And the right side pipe part along the right wall, provided with the injection port in each of these parts, the left and right side pipe parts are respectively formed so as to protrude forward from the lateral part of the intermediate pipe part, The dishwasher according to claim 1, wherein the fixed pipe is provided so that a horizontal part of the intermediate pipe part and the left and right side pipe parts have an upward slope from an upper end of a vertical part of the intermediate pipe part .

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