KR20050016016A - Dish washer - Google Patents

Abstract

PURPOSE: A dishwasher is provided to effectively remove bubbles formed in a wash tank and to suppress production of bubbles although a kitchen detergent is used. CONSTITUTION: A dishwasher comprises a wash tank in which wash water is stored; a washing unit(29) for circulating the wash water stored in the wash tank and jetting the wash water toward tableware received in the wash tank; a heater arranged to the bottom part of the wash tank to heat the wash water stored in the wash tank in washing tableware; a heater cover arranged to the upper side of the heater; and a bubble removal unit(58) for removing bubble staying on the heater cover by jetting water toward the heater cover.

Description

Dish Washer {DISH WASHER}

The present invention relates to a dishwasher capable of washing dishes by spraying the washing water toward the dishes contained in the washing tank.

In general, a dishwasher generates washing water by mixing a dedicated detergent with water stored in a washing tank, and washes the dishes by spraying the washing water toward the dishware (see Patent Document 1, for example). A plurality of nozzles are arranged in the washing tank, and the washing water stored in the washing tank is sucked by the washing pump and sprayed from the plurality of nozzles toward the dishware. The sprayed washing water is collected in the washing tank and sprayed again toward the dishes from the plurality of nozzles.

In the dishwasher, the washing water is jetted from the plurality of nozzles at the same time, and the washing water in the washing tank is circulated as described above, so that detergent bubbles are more likely to occur than when washing the dishes by hand. In particular, when there is little dirt attached to the dishes, such as when washing the dishes with a dishwasher after washing by hand once, there is a fear that bubbles of the detergent are more likely to occur and a large amount of bubbles are generated in the washing tank. The large amount of foam in the cleaning tank may cause problems such as poor cleaning performance or foam leaking out of the washing machine. Therefore, the exclusive detergent is less likely to foam than the general kitchen detergent used for hand washing. .

(Patent Document 1)

Japanese Patent Laid-Open No. 8-140919

However, it is cumbersome to deliberately prepare a dedicated detergent, so it is convenient if you can wash dishes using kitchen detergent. In conventional dishwashers, however, the use of kitchen detergents creates a large amount of foam in the wash tank.

SUMMARY OF THE INVENTION The present invention has been made under such a background, and an object thereof is to provide a dishwasher capable of effectively removing bubbles generated in a washing tank.

Moreover, another object of this invention is to provide the dishwasher which can suppress generation | occurrence | production of foam enough even if kitchen detergent is used.

(Means to solve the problem and the effect of the invention)

The invention as set forth in claim 1 for achieving the above object comprises a washing tank (3) in which washing water is stored, and washing means (20) for circulating the washing water stored in the washing tank and spraying the washing water stored in the washing tank. 26, 29, 35, a heater 39 disposed at the bottom of the washing tank and capable of heating washing water stored in the washing tank when washing dishes, and a heater cover 40 disposed above the heater. And foaming means (20, 58) for removing accumulated bubbles on the heater cover by spraying water (tap water or washing water) toward the heater cover. It is a washing machine (1).

In addition, alphabetic characters and numerals in parentheses represent corresponding components and the like in the embodiments to be described later. Hereinafter, the same in this section.

According to this configuration, since the bubbles accumulated on the heater cover can be washed well by the bubble removing means, a large amount of bubbles can be prevented from occurring in the washing tank. Therefore, the foam generated in the washing tank can be effectively removed, and the use of kitchen detergent can sufficiently suppress the generation of foam.

And a plate basket 9B for accommodating the dishes, arranged at regular intervals with respect to the bottom surface 3B of the washing tank 3, wherein the defoaming means 20, 58 comprise: The water may be sprayed toward the heater cover 39 through the bottom surface of the washing tank and the dish basket.

A pressure adjusting hole 58 formed in the washing tank 3 and connected to a drainage channel (near the highest position of) for draining the washing water in the washing tank; 58) If water is sprayed from the pressure adjusting hole, the pressure adjusting hole can be used to remove bubbles in the washing tank without separately forming the bubble removing means.

The invention according to claim 2 is characterized in that the bubble removing means (20, 58) sprays a part of the washing water toward the heater cover when discharging the washing water stored in the washing tank (3) to the outside of the washing machine. It is a dishwasher 1 of Claim 1.

According to this configuration, when the washing water stored in the washing tank is discharged to the outside of the washing machine, the foam remaining on the heater cover or the detergent (kitchen detergent) accumulated in the gap formed in the heater accommodating part is washed together with the washing water sprayed by the foam removing means. I can make it. Thus, if water is subsequently introduced into the washing tank (e.g., once the washing water in the washing tank is discharged to the outside of the washer after the washing stroke, tap water is again supplied into the washing tank to carry out a rinsing stroke, etc.). It can prevent the bubbles from melting in the water supplied. Therefore, it is possible to prevent the rinsing performance from deteriorating or foaming again in the next stroke (for example, washing stroke) when the next rinsing stroke is performed. Therefore, foam generated in the washing tank can be removed more effectively, and even the use of kitchen detergent can sufficiently suppress the generation of foam.

The invention as set forth in claim 3 further comprises a washing tank (3) in which washing water is stored, dish baskets (9, 9A) for holding dishes arranged in the washing tank, and washing water stored in the washing tank. Washing means 20, 35 for spraying from the top of the dish basket toward the dishes held in the dish basket and water (tap water) from the washing means when discharging the washing water stored in the washing tank to the outside of the washing machine; And foam removing means (20, 35) for removing bubbles in the washing tank by spraying.

According to this configuration, when the washing water stored in the washing tank is discharged to the outside of the washing machine, the foam remaining in the washing tank (such as a dish basket) can be washed out with the water sprayed from the washing means. Thus, if water is subsequently introduced into the washing tank (e.g., once the washing water in the washing tank is discharged to the outside of the washer after the washing stroke, tap water is again supplied into the washing tank to carry out a rinsing stroke, etc.). It can prevent the bubbles from melting in the water supplied. Therefore, it is possible to prevent the rinsing performance from deteriorating or foaming again in the next stroke (for example, washing stroke) when the next rinsing stroke is performed. Therefore, foam generated in the washing tank can be removed more effectively, and even the use of kitchen detergent can sufficiently suppress the generation of foam.

Since the washing means 20, 35 can spray the washing water more widely if the water is sprayed in the shower shape, it is possible to better remove the bubbles generated in the washing tank.

As the invention described in claim 4, the dish baskets 9 and 9A include a cup holder 13 for holding a cup, and the washing means 20 and 35 correspond from the upper side of the cup holder. Spraying the washing water toward the cup held in the cup holder.

The invention as set forth in claim 5 further comprises a washing tank (3) in which washing water is stored, and washing means (20, 26, 29, 35) for circulating the washing water stored in the washing tank and spraying it toward the dishes contained in the washing tank. And, between the dish baskets 9 and 9B for holding the dishes, which are arranged at regular intervals with respect to the bottom surface 3B of the washing tank, and between the bottom surface of the washing tank and the dish basket, Foaming means (54, 55) for removing bubbles accumulated on the bottom of the washing tank by spraying water (tap water or washing water) into the shower shape toward the bottom of the washing tank. It is a dishwasher (1) characterized in that.

According to this structure, since the foam accumulated on the bottom surface of the washing tank can be washed well by the bubble removing means, a large amount of foam can be prevented from occurring in the washing tank. Therefore, the foam generated in the washing tank can be effectively removed, and the use of kitchen detergent can sufficiently suppress the generation of foam.

The defoaming means 54, 55 are arranged so as to face the water supply pipe 54 for supplying water sprayed toward the bottom surface 3B of the washing tank 3 at a predetermined interval with respect to the tip of the water supply pipe. If it comprises the said opposing member 55 and injects water through the clearance 57 of the said water supply pipe and the said opposing member, water can be sprayed more favorably from the gap of a water supply pipe and an opposing member to shower shape. Therefore, since water can be sprayed more extensively, bubbles accumulated in the bottom surface of the washing tank can be removed better.

As in the invention described in claim 6, the defoaming means 54, 55 may spray tap water toward the bottom surface 3B of the washing tank when water is supplied into the washing tank 3.

The invention as set forth in claim 7 further comprises a washing tank (3) in which the washing water is stored, and washing means (20, 26, 29, 35) for circulating the washing water stored in the washing tank and spraying it toward the dishes contained in the washing tank. And a heater 39 capable of heating the wash water stored in the washing tank at the time of washing the dishes, a heater accommodating portion 48 for accommodating the heater, and a kitchen detergent. When the kitchen detergent is supplied into the washing tank from the detergent accommodating portion side 19A, and the kitchen detergent is supplied into the washing tank for use in washing dishes, and the kitchen detergent is supplied to the heater accommodating portion. And a dishwasher 1, characterized in that it includes a regulating means 53 for regulating not to enter.

Since kitchen detergents are usually liquids unlike dedicated detergents, kitchen detergents supplied into the washing tank may flow into the heater receiving portion. In this case, kitchen detergent is applied to a portion where the liquid in the heater accommodating portion tends to collect (for example, a contact portion between the heater cover and the heater accommodating portion, a metal plate disposed at the bottom of the heater accommodating portion, and a gap between the bottom surface of the heater accommodating portion and the like). In addition, when tap water is supplied into the washing tank, a large amount of foam may be generated.

According to the structure of this invention, since the kitchen detergent supplied into the washing tank is regulated so as not to enter into a heater accommodating part, it can prevent the kitchen detergent from flowing into a heater accommodating part. Therefore, when tap water is supplied into the washing tank, it is possible to prevent the kitchen detergent accumulated in the heater accommodating portion from being dissolved in the water supplied. Therefore, it is possible to prevent the rinsing performance from deteriorating in the next rinsing stroke or foaming again in the next stroke (for example, the washing stroke), and to sufficiently generate the foam even when using a kitchen detergent. It can be suppressed.

The restricting means 53 may include a protrusion protruding from the bottom surface 3B of the washing tank 3.

The regulating means 53 may restrict the kitchen detergent from entering the heater accommodating portion when the kitchen detergent is supplied from the detergent accommodating portion 19A into the washing tank, and is different from the detergent accommodating portion. When the kitchen detergent is supplied into the washing tank from the position (for example, when the kitchen detergent is housed in a container other than the detergent container, or when the kitchen detergent overflows from the detergent container), the kitchen detergent is supplied to the washing tank. May be controlled so as not to enter the heater accommodating portion.

As the invention as set forth in claim 8, it includes a water storage recess 15 formed in the bottom surface 3B of the washing tank 3 and storing washing water at the time of washing the dishes. , May guide the kitchen detergent supplied from the detergent container 19A into the washing tank toward the water storage recess side.

The invention as set forth in claim 9 further comprises a washing tank (3) in which washing water is stored, and washing means (20, 26, 29, 35) for circulating the washing water stored in the washing tank and spraying the washing water stored in the washing tank. And a heater 39 capable of heating the wash water stored in the washing tank at the time of washing the dishes, a heater accommodating portion 48 for accommodating the heater, and a kitchen detergent. And a detergent receiving portion (19A, 19B) that can accommodate a kitchen detergent supplied into the washing tank for use in washing dishes, wherein the detergent receiving portion includes a kitchen detergent supplied from the detergent receiving portion into the washing tank. It is a dishwasher (1) characterized by being disposed in a position not to enter the heater accommodating portion.

According to this configuration, since the kitchen detergent supplied into the washing tank can be prevented from entering the heater accommodating portion, when the tap water is supplied into the washing tank, the kitchen detergent accumulated in the heater accommodating portion is prevented from dissolving in the water supplied. can do. Therefore, it is possible to prevent the rinsing performance from deteriorating in the next rinsing stroke or foaming again in the next stroke (for example, the washing stroke), and to sufficiently generate the foam even when using a kitchen detergent. It can be suppressed.

The heater accommodating part 48 may be arrange | positioned in front of the bottom part of the said washing tank.

The detergent storage portions 19A and 19B may be disposed at positions displaced from the upper side of the heater housing portion 48. In this case, the detergent receivers 19A and 19B may be disposed on the rear surface of the doors 5 and 6 for closing the washing tank 3 (the side which becomes the washing tank side when closed), It may also be placed in the dish basket (front) to hold the dishes to be cleaned.

Embodiment of the Invention

EMBODIMENT OF THE INVENTION Hereinafter, embodiment of this invention is described concretely with reference to drawings.

1 is a perspective view of the dishwasher 1 according to the embodiment of the present invention as viewed obliquely from the front side.

With reference to FIG. 1, this dishwasher 1 is partitioned by the case body 2 whose external shape is substantially rectangular shape. As for the case body 2, the length (depth) of the front-back direction is formed short compared with the length (width) of the left-right direction.

In the case body 2, a washing tank 3 for accommodating dishes to be washed is arranged, and an opening 4 is formed in the front surface of the washing tank 3 (see FIG. 2). The opening 4 can be covered by two doors (upper door 5 and lower door 6) which are rotatably attached to the case body 2. The upper door 5 can cover the upper half of the opening 4, and the lower door 6 can cover the lower half of the opening 4. The upper door 5 is rotatable upward in the front upper side, while the lower door 6 is rotatable forward in the lower side. In the state where these upper doors 5 and the lower door 6 are closed, the opening 4 is covered and the water is closed in the washing tank 3 so as not to leak.

At the upper end of the lower door 6, a handle 7 for holding by the user when the lower door 6 is opened is disposed at the center in the left and right directions. The user can rotate the lower door 6 forwardly downward by holding the handle 7 and pulling forward. The upper door 5 is opened and closed in conjunction with the lower door 6 so that when the lower door 6 is rotated forwardly downward, the upper door 5 is rotated forwardly upward and interlocked with the opening 4 Is greatly opened.

In the lower part of the front face of the case body 2, the operation display panel 8 for setting the operation content (operation course etc.) in this dishwasher 1 and displaying an operation condition is arrange | positioned.

FIG. 2 is a cross-sectional view of the cross section when the dishwasher 1 is cut in the vertical plane along the front-back direction. 3 is the front view which looked at the dishwasher 1 from the front in the state which removed the upper door 5 and the lower door 6. As shown in FIG. 3, the lower part of the dish washing machine 1 is abbreviate | omitted and shown.

2 and 3, two washing baskets 9 (upper basket 9A and lower basket 9B) for holding dishes to be washed are spaced in the washing tank 3 at a predetermined interval in the vertical direction. It is arranged. The upper basket 9A and the lower basket 9B are slidably arranged in the front-rear direction, respectively, and with the upper door 5 and the lower door 6 open, they are pulled forward through the opening 4 to remove the dishes. It is easy to put in and take out.

The right part (range about 1/3 of the right end) of the lower basket 9B is the large dish accommodating part 10 which can accommodate the comparatively large dish, such as a medium size dish and a large dish, upright. Moreover, the part (range of about 2/3 from the left end) from the center part of the lower basket 9B to the left side is the recessed container accommodating part 11 which can accommodate in the state which concave bowls, such as a rice bowl, a soup bowl, and a bowl, stood sideways. )

The right part of the upper basket 9A (range of about 1/3 from the right end) has a small container container 12 for accommodating the small container. In addition, the part (range about 2/3 from the left end) from the center part of the upper basket 9A to the left side becomes the cup accommodating part 13 for accommodating a cup, a cup, etc. The small bowl container 12 can accommodate two small bowls (four in total) side by side in two rows before and after, and the four cups in the front and rear three rows of four cups (12 total in the row). ) Cups can be accommodated side by side. The small bowl accommodated in the small container accommodation part 12, the cup, the mug, etc. which are accommodated in the cup accommodation part 13 are respectively set so that an entrance may face downward.

A large dish or the like accommodated in the large dish accommodating portion 10 requires more accommodation space in the vertical direction than a rice bowl or the like accommodated in the concave dish accommodating portion 11, while the large dish is accommodated in the small dish accommodating portion 12. The small container does not require a storage space in the up-down direction than a cup or the like accommodated in the cup container 13. So, in this embodiment, it is set as the structure which arrange | positions the small container accommodation part 12 on the upper side of the large dish accommodation part 10, and arrange | positions the cup accommodation part 13 above the recessed container accommodation part 11, Moreover, the cup accommodating part 13 is formed one step lower than the small container accommodating part 12, and it is possible to store a tableware efficiently in the upper basket 9A and the lower basket 9B. Moreover, the empty spaces, such as the periphery of the upper basket 9A and the lower basket 9B, can be accommodated in a state where a small plate is upright.

In the upper part of the left and right inner side surfaces 3A of the washing tank 3, two pairs of rails 14 are fixed in an up-down direction for engaging with the left-right side edge part of the upper basket 9A, and holding them slidably back and forth. They are arranged in parallel at intervals (only a pair of left rails 14 are shown in FIG. 2). According to this configuration, the height of the upper basket 9A can be switched in two stages depending on which of the two pairs of rails 14 arranged side by side is fitted to the left and right side edge portions of the upper basket 9A. When the left and right side edge portions of the upper basket 9A are fastened to the upper rail 14 and the upper basket 9A is held at a high position, a relatively large space can be formed above the large dish receiving portion 10. Even if it is a large plate, it can be accommodated in the large plate accommodating part 10 favorably.

FIG. 4 is a cross-sectional view of the cross section when the dishwasher 1 is cut in the horizontal plane along the front and rear directions, and the lower door 6 is opened.

With reference to FIGS. 2-4, the water storage part 15 for storing wash | cleaning water from the front part of the bottom surface 3B of the washing tank 3 to the left part is formed one step lower. In the washing tank 3, for example, tap water can be supplied from a water supply outside the washing machine, and the tap water supplied into the washing tank 3 collects in the lower part of the washing tank 3 including the reservoir 15. It is supposed to be. The washing water used for washing the dishes is produced by mixing the detergent into the washing tank 3 and mixing the detergent with the tap water supplied into the washing tank 3.

The water level of the washing water (or tap water) stored in the washing tank 3 is detected by a water level sensor 16 (pressure sensor) disposed at the rear lower portion of the washing tank 3. An air trap 17 is connected to the reservoir 15, and the air trap 17 and the water level sensor 16 are connected by an air hose 18. According to this structure, since the air pressure in the air trap 17 changes with the change in the water level in the washing tank 3, the washing tank is detected by detecting the pressure change of the air in the air trap 17 with the water level sensor 16. (3) The level of wash water stored in can be detected.

On the inner surface of the lower door 6 (surface which is the side of the washing tank 3 in the closed state), a recess (dedicated detergent receiving portion 19A) for accommodating a dedicated detergent (usually powder) at its central portion is provided. The recessed part (kitchen detergent accommodating part 19B) for accommodating kitchen detergent (usually a liquid) is formed in the left side of this dedicated detergent accommodating part 19A (refer FIG. 4). In this dishwasher (1), a course for washing dishes by storing the exclusive detergent in the exclusive detergent storage unit 19A and mixing the exclusive detergent with the tap water supplied into the washing tank 3 (exclusive detergent course), kitchen Various driving courses, such as a course (kitchen detergent course) in which a kitchen detergent is accommodated in the detergent storage unit 19B and the kitchen detergent is mixed with tap water supplied into the washing tank 3, are used to wash dishes.

The exclusive detergent container 19A and the kitchen detergent container 19B are each formed in different shapes. That is, the dedicated detergent container 19A is formed in a substantially rectangular shape in plan view, while the kitchen detergent container 19B is formed in a substantially circular shape in plan view. In the state where the lower door 6 is opened, the openings of the exclusive detergent storage portion 19A and the kitchen detergent storage portion 19B are respectively faced upward, so that the exclusive detergent and the kitchen detergent can be accommodated. After storing the exclusive detergent in the exclusive detergent container 19A, or after the kitchen detergent is accommodated in the kitchen detergent container 19B and closing the lower door 6, the dedicated container contained in the exclusive detergent container 19A is closed. The kitchen detergent contained in the detergent or kitchen detergent receiver 19B is dropped into the washing tank 3 and mixed with the tap water supplied into the washing tank 3.

When washing dishes with a kitchen detergent course, the amount of kitchen detergent to be used is preferably about 5 ml. Kitchen detergents include neutral, weakly alkaline, and weakly acidic detergents. When the detergent amount is about 5 ml, even when any kind of kitchen detergent is used, the dishes can be sufficiently washed.

The lower part of the washing tank 3 (the rear part of the reservoir 15) has a washing and draining pump for circulating the washing water in the washing tank 3 or draining the washing water in the washing tank 3 during dish washing. ) Is arranged. Although not shown in FIG. 2, the washing-and-draining pump 20 is divided into a washing pump chamber and a drain pump chamber, and the washing pump chamber and the drain pump chamber each have a washing impeller and a draining impeller rotatable by a pump motor. It is provided.

The suction port 21 of the washing pump chamber is connected to the circulation port 22 formed on the rear wall of the water storage unit 15, and the discharge port 23 of the washing pump chamber extends along the left and right direction under the washing tank 3, It is connected to the furnace 24. This water passage 24 is connected to the rotating nozzle arm and the fixed nozzle arm which are mentioned later. When the pump motor rotates forward, the washing water is sucked into the washing pump chamber from the reservoir 15 through the circulation port 22 by the rotation of the washing impeller in the washing pump chamber, and the washing water is discharged from the outlet 23 into the water passage 24. Is transferred to. The washing water pumped through the water passage 24 is sprayed from the rotating nozzle arm and the fixed nozzle arm toward the dishes in the washing tank 3. The washing water sprayed from the rotating nozzle arm and the fixed nozzle arm gathers again at the bottom of the washing tank 3 and is sucked from the reservoir 15 through the circulation port 22 to the washing and draining pump 20 (wash pump chamber). The washing water collected in the reservoir 15 is circulated in the dish washing machine 1 to be used for washing the dishes.

Moreover, the suction port of the drain pump chamber is connected to the drain port 25 formed in the left wall of the water storage part 15, and the discharge port of the drain pump chamber is connected to the drainage path (not shown) connected to the outside of the washing machine. When the pump motor is inverted, the washing water is sucked from the reservoir 15 through the drain port 25 into the drain pump chamber by the rotation of the drain impeller in the drain pump chamber, and the wash water is discharged out of the washer through the drain passage.

At the bottom of the washing tank 3, two rotating nozzle arms 26 for spraying the washing water from the bottom of the lower basket 9B upwards are arranged side by side. Each of these two rotating nozzle arms 26 has an elongated shape of approximately elliptical shape, and is rotatably held in a horizontal plane about the respective longitudinal center portion by a common nozzle base 27. The nozzle base 27 is connected to the water passage 24 through.

On the upper surface of each rotary nozzle arm 26, a plurality of nozzles 28 (for example, six) are formed. The washing water transferred from the washing and draining pump 20 to each rotating nozzle arm 26 through the water passage 24 and the nozzle base 27 is directed upward from the nozzle 28 of each rotating nozzle arm 26. Sprayed. When washing water is injected from the nozzle 28 of each rotary nozzle arm 26, reaction force is generated with respect to each rotary nozzle arm 26, and the reaction force causes each rotary nozzle arm 26 to become a nozzle 28. As shown in FIG. Rotate while spraying the washing water from). For this reason, washing water can be sprayed to the tableware located above each rotating nozzle arm 26, and it can wash well.

On the rear surface 3C (inner surface) of the washing tank 3, a fixed nozzle arm 29 for spraying the washing water is disposed between the upper basket 9A and the lower basket 9B. After the fixed nozzle arm 29 extends upward from its lower end, the fixed nozzle arm 29 has a shape branched into the first arm 30 and the second arm 31 on the way. The fixed nozzle arm 29 has its lower end connected to the water passage 24.

The 1st arm 30 branches to the left at the position slightly lower than the cup accommodation part 13 of 9 A of upper baskets, and extends substantially horizontally to the left end vicinity of 3 C of back surfaces. In the first arm 30, a nozzle 32 for spraying the washing water upwards toward the cup accommodated in the last row (third row) of the cup container 13 can be accommodated in the last row of the cup container 13. It is provided with the same number (four) as the number of cups. Each nozzle 32 corresponds to four cups accommodated in the last row of the cup receiving portion 13, and is capable of spraying the washing water into the corresponding cups.

The second arm 31 extends further upwardly than the branching position of the first arm 30, and then bends to the right at a position slightly lower than the small container accommodation portion 12 to approximately the right end vicinity of the rear surface 3C. It extends horizontally. The second arm 31 is provided with a plurality of nozzles 33 (for example, three) for spraying the washing water upwards toward the small vessel accommodated in the small vessel container portion 12. In addition, the second arm 31 is provided with a plurality of impeller nozzles 34 (for example, two) for spraying the washing water downward toward the large dish accommodated in the large dish container portion 10. In this impeller-type nozzle 34, an impeller is rotated with the injection of wash water, and it can spread | spread wash water extensively. By this impeller-type nozzle 34, washing water can be sprayed on the upper part of the large dish which wash water sprayed from the rotating nozzle arm 26 of the right side is hard to reach.

In the ceiling surface 3D (inner surface) of the washing tank 3, the ceiling surface nozzle 35 which injects washing water downward is arrange | positioned at the position which becomes almost immediately above the center part of the cup receiving part 13 is arrange | positioned. This ceiling nozzle 35 is connected to the washing pump room of the washing and draining pump 20 via the water supply pipe 36. Therefore, when the pump motor rotates forward and the washing impeller in the washing pump chamber rotates, the washing water sucked from the reservoir 15 through the circulation port 22 to the washing pump chamber through the water supply pipe 36 to the ceiling nozzle 35. It is transferred and sprayed downward from the ceiling nozzle 35. The washing water sprayed from the ceiling nozzle 35 is diffused in the left and right directions, and is sprayed to a position near the bottom of the ceiling nozzle 35 and behind the ceiling nozzle 35. Thereby, the outer surface of the cup accommodated in the 2nd and 3rd rows of the cup accommodating part 13 can be wash | cleaned favorably (refer FIG. 2).

On the upper edge of the water storage part 15, a mesh food waste filter 37 is detachably disposed, and the food waste separated from the dish during washing is captured by this food waste filter 37 and stored. Inflow into (15) is prevented. A handle 38 extending upward is formed at the front end portion of the food waste filter 37, so that the user can easily detach the food waste filter 37 by holding the handle 38. As shown in FIG.

This dishwasher 1 has a function of drying dishes after washing. In the portion (right side of the reservoir 15) from the front center portion to the right end of the bottom surface 3B of the washing tank 3, the washing water stored in the washing tank 3 at the time of washing or the washing tank at the time of drying 3) A loop heater 39 is arranged to warm the air inside. Above the heater 39, a metal heater cover 40 having a plurality of through holes (not shown) is disposed.

In the dedicated detergent course, for example, a washing stroke spraying the washing water stored in the washing tank 3 toward the tableware, and after the washing stroke, the washing water in the washing tank 3 is once drained and supplied again into the washing tank 3. A rinsing stroke for spraying the tap water toward the tableware, and a drying stroke for draining the washing water in the washing tank 3 after the rinsing stroke, and heating the air in the washing tank 3 by the heater 39 to dry the dishes. . The kitchen detergent course also includes, for example, a soaking stroke in which, in addition to the washing stroke, rinsing stroke and drying stroke, the washing water stored in the washing tank 3 before the washing stroke is sprayed toward the dishware and left for a predetermined time. In the kitchen detergent course, a large amount of foam can be prevented from occurring in the washing tank 3 by performing a soaking stroke before the washing stroke. The level of the washing water (or tap water) stored in the washing tank 3 in the soaking stroke, washing stroke and rinsing stroke may be set at the same level or at different levels. For example, the water level during the soaking stroke may be set lower than the water level during the rinsing stroke or the washing stroke.

Moreover, the sound-proof seal 41 extended in an up-down direction is attached to the left and right both edges (outside of the washing tank 3) of the front of the case body 2 (refer FIG. 3). By the function of this soundproofing seal 41, the sound which generate | occur | produces inside a washing | cleaning machine when operating the said dishwasher 1 can be prevented from leaking to the outside.

5 is a partial cross-sectional view of the lower door 6. (A) is sectional drawing along the A-A line in FIG. 4, and FIG. 5 (b) is sectional drawing along the B-B line in FIG.

Referring to Fig. 5 (a), the exclusive detergent storage portion 19A includes a bottom surface wall 42 which becomes a substantially flat flat surface with the lower door 6 opened, and a peripheral edge of the bottom surface wall 42. It has a side wall (rear wall 43, front wall 44, and left and right side walls 45) erected from the top. The rear wall 43 extends upwards (about twice as high) than the front wall 44, and is slightly inclined to widen backwards as it faces upwards. On the other hand, the front wall 44 is inclined to widen forward as it goes upward, and the inclination angle (for example, about 45 degrees) with respect to the vertical direction is set larger than the inclination angle of the rear wall 43, have.

When washing with the exclusive detergent course, after storing the exclusive detergent in the exclusive detergent container 19A with the lower door 6 open, and closing the lower door 6, the bottom wall of the exclusive detergent container 19A ( 42) is in a state extending substantially in the vertical direction, so that the rear wall 43 is located below the bottom wall 42.

By making the inclination angle of the rear wall 43 a little amount, when the lower door 6 is closed with the exclusive detergent which is powder contained in the exclusive detergent accommodating part 19A, the exclusive detergent falls into the washing tank 3 When the lower door 6 is closed with the liquid detergent contained in the exclusive detergent container 19A by mistake, the kitchen detergent can be satisfactorily dropped into the washing tank 3. . Therefore, when the exclusive detergent is accommodated in the exclusive detergent container 19A, the exclusive detergent can be mixed well with water in the washing tank 3, while the kitchen detergent is accidentally accommodated in the exclusive detergent container 19A. The kitchen detergent remaining in the dedicated detergent container 19A can be prevented from mixing with the water in the washing tank 3 at the time of the rinsing stroke to generate a large amount of foam.

Referring to FIG. 5 (b), the kitchen detergent container 19B is a spherical wall 46 constituting the front side portion at the center of the kitchen detergent container 19B with the lower door 6 open. ) And a flat wall 47 constituting the rear side portion of the kitchen detergent container 19B. The planar wall 47 is inclined so as to widen laterally as it goes upward.

In the case of washing with the kitchen detergent course, after the kitchen detergent is accommodated in the kitchen detergent container 19B with the lower door 6 open and the lower door 6 is closed, the flat wall of the kitchen detergent container 19B ( 47) It is located under the spherical wall 46. In this state, since the flat wall 47 is inclined downwardly, the kitchen detergent housed in the kitchen detergent container 19B is satisfactorily introduced into the washing tank 3 along the flat wall 47. You can drop it.

FIG. 6 is a cross-sectional view taken along the line C-C in FIG. 4.

4 and 6, in the portion (right side of the reservoir 15) from the front center to the right end of the bottom surface 3B of the washing tank 3, the heater accommodating recess for accommodating the heater 39 is provided. The part 48 is formed. The heater accommodating recesses 48 are each bent inward to the same height once the front wall 49 and the rear wall 50 extend downward, and then extend downward by a predetermined amount so that the bottom wall 51 ) Is coupled to the shape. That is, the end parts 49A and 50A are formed in the front wall 49 and the back wall 50 at substantially the same height, respectively, and the heater cover 40 is accommodated by these end parts 49A and 50A. . The heater cover 40 includes a flat main surface portion 40A extending substantially coincident with the bottom surface 3B of the washing tank 3, a front edge of the main surface portion 40A, and A bent portion 40B bent downward from the trailing edge is provided, and the lower ends of these bent portions 40B are accommodated by the end portions 49A, 50A.

The metal plate 52 is attached to the upper surface of the bottom wall 51 of the heater accommodating portion 48 (the bottom surface of the heater accommodating portion 48). This metal plate 52 is for improving drying performance by reflecting the heat | fever generated from the heater 39 at the time of drying.

When the exclusive detergent course is selected and the lower door 6 is closed after storing the exclusive detergent in the exclusive detergent receiving portion 19A with the lower door 6 open, the exclusive detergent is applied to the bottom of the washing tank 3. It falls to the front end part of the surface 3B (front of the left end part of the heater cover 40), and mixes with the tap water supplied to the washing tank 3. On the other hand, when the kitchen detergent course is selected and the lower door 6 is closed after receiving the kitchen detergent in the kitchen detergent accommodating portion 19B with the lower door 6 open, the kitchen detergent is removed from the washing tank 3. It falls to the front end of the bottom surface 3B (in front of the reservoir 15), flows into the reservoir 15 and mixes with tap water supplied to the washing tank 3.

However, if the user mistakenly accepts the kitchen detergent in the dedicated detergent container 19A and closes the lower door 6, the kitchen detergent is the front end (heater cover) of the bottom surface 3B of the washing tank 3. After falling to the front of 40), it flows into the heater accommodating recess 48 through the gap in front of the heater cover 40. In this case, the kitchen detergent may stick to the contact portion between the front bent portion 40B and the end portion 49A of the heater cover 40 or the gap between the metal plate 52 and the bottom wall 51.

Therefore, in this embodiment, it is set as the structure which formed the protrusion part 53 extended to the left and right in the front end part (front of the left end part of the heater cover 40) of the bottom surface 3B of the washing tank 3, and was formed. This protrusion 53 extends from the right end of the washing tank 3 to the vicinity of the right end of the reservoir 15, and is disposed obliquely toward the rear side as it approaches the reservoir 15.

According to this configuration, even when the user mistakenly accepts the kitchen detergent in the dedicated detergent storage portion 19A and closes the lower door 6, the kitchen detergent is applied to the front end portion (3B) of the bottom surface 3B of the washing tank 3. After falling to the left end of the heater cover 40), it is guided along the protrusion 53 to the water storage part 15 side, and thus passes through a gap in front of the heater cover 40 to allow the heater accommodating recess 48. You can prevent kitchen detergent from flowing into it.

In general, since the kitchen detergent is more likely to foam than the exclusive detergent, when using the kitchen detergent, it is preferable to make the foam as hard as possible in the washing tank 3. In the above-described configuration, the kitchen detergent collects in the contact portion between the front bent portion 40B and the end portion 49A of the heater cover 40 or in the gap between the metal plate 52 and the bottom wall 51, and the washing tank ( 3) When the tap water is supplied in the inside, the kitchen detergent accumulated in the heater accommodating recess 48 can be prevented from melting into the supplied water. Therefore, it is possible to prevent the rinsing performance from deteriorating in the next rinsing stroke or foaming again in the next stroke (for example, the washing stroke), and to sufficiently generate the foam even when using a kitchen detergent. It can be suppressed.

In addition, in this embodiment, even when the kitchen detergent is excessively poured into the kitchen detergent accommodating portion 19A, the kitchen detergent flowing to the right side of the lower door 6 closes the lower door 6 so that the washing tank 3 ), It is possible to prevent flow into the heater accommodating recess 48 by the projection 53.

FIG. 7: is the figure which looked at a part of back surface 3C of the washing tank 3 from the front, and has shown the structure of the lower end part vicinity of the fixed nozzle arm 29. As shown in FIG.

Referring to FIG. 7, the rear surface 3C of the washing tank 3 has a shape extending forward from the height near the lower end of the fixed nozzle arm 29. That is, at the height near the lower end of the fixed nozzle arm 29, a horizontal plane 3E is formed which extends horizontally from the rear surface 3C of the washing tank 3 toward the front side and extends straight in the left and right direction, and this horizontal plane is formed. From the front edge of 3E, the suspension surface 3F extends downward. In the horizontal surface 3E, a water supply pipe 54 protruding upward is formed at a position slightly to the lower end of the fixed nozzle arm 29. At the time of water supply, tap water is supplied from the water supply pipe 54 into the washing tank 3.

Above the water supply pipe 54, the cup nozzle 55 is arrange | positioned opposingly. This cup nozzle 55 is fixed to the fixed nozzle arm 29 by the connection part 56, and is arrange | positioned so that the upper end part of the water supply pipe 54 may be covered.

FIG. 8 is a cross-sectional view taken along the line D-D in FIG. 7.

With reference to FIG. 8, the cup nozzle 55 is equipped with the cylindrical part 55A which opposes the upper edge of the water supply pipe 54, and the umbrella part 55B which blocks the upper surface of this cylindrical part 55A. The peripheral part of the umbrella part 55B is formed in the shape curved downward. 55 A of cylindrical parts are arrange | positioned at the lower edge with predetermined small space | interval (for example, about 1 mm) with respect to the upper edge of the water supply pipe 54. As shown in FIG. According to such a structure, since the water pressure in the vicinity of the outlet 57 constituted by the small gap between the water supply pipe 54 and the cylindrical portion 55A is increased, the tap water transferred through the water supply pipe 54 upwards is discharged from the outlet 57. In the shower shape.

The first half of the circumferential edge of the umbrella portion 55B constitutes a front umbrella portion 55C extending slightly below the cylindrical portion 55A, and the second half portion of the circumferential edge of the umbrella portion 55B is the front umbrella portion ( The rear umbrella portion 55D extends further down (about twice as much as the front umbrella portion 55C) to 55C). The washing water sprayed from the first half of the outlet 57 passes through the gap between the front umbrella portion 55C and the water supply pipe 54, and a predetermined small angle (e.g., 10 degrees) to spread over the bottom 3B of the washing tank 3. On the other hand, the washing water injected from the latter half of the outlet 57 passes through the gap between the rear umbrella portion 55D and the water supply pipe 54 and is directed almost downward.

As mentioned above, since kitchen detergents generate | occur | produce foam more easily than the exclusive detergent, when using kitchen detergent, it is necessary to remove the foam | foam which arises in the washing tank 3 favorably. In the configuration as described above, since the entire bottom surface 3B of the washing tank 3 can be washed out by the washing water sprayed from the water supply pipe 54 at the time of water supply, a large amount of bubbles are generated in the washing tank 3. It can be prevented from occurring. Therefore, the foam generated in the washing tank 3 can be effectively removed, and even the use of kitchen detergent can sufficiently suppress the generation of foam.

Referring to FIG. 7 again, in the suspension surface 3F formed below the horizontal surface 3E of the washing tank 3, the position slightly left of the water supply pipe 54 (the position in the left and right directions is near the left end of the heater cover 40). ), For example, a small hole 58 having a diameter of about 3 mm is formed. This small hole 58 is connected to the drainage path from the drain pump room of the washing and draining pump 20 to the outside of the washing machine. The small holes 58 are formed at positions higher than the water level of the washing water stored in the washing tank 3 at the time of washing.

The drainage path for discharging the washing water from the washing tank 3 through the washing and draining pump 20 to the outside of the washing machine once ascends to a position higher than the level of the washing water stored in the washing tank 3, and then faces downwards. The tip of the drain hose) is provided so as to be at a position lower than the level of the washing water stored in the washing tank 3. The small hole 58 is connected through the vicinity of the highest position of the drainage path. The inside of the washing tank 3 is connected to the outside of a washing machine through an exhaust port (not shown), etc., and the pressure in the washing tank 3 becomes equal to atmospheric pressure. Therefore, in the case where the washing and draining pump 20 is stopped after driving the washing and draining pump 20 to start draining the washing water in the washing tank 3, the portion where the small hole 58 of the drainage passage is formed. Rather, the washing water on the upstream side (including the inside of the washing tank 3) can be prevented from automatically draining out of the washing machine.

Since the small holes 58 are connected to the drainage passages, at the time of drainage, the washing water sucked into the washing / drainage pump 20 (drainage pump chamber) from the reservoir 15 through the drains 25 passes through the drainage passages. In the process of being discharged out of the washer, a part of the wash water is injected into the washing tank 3 from the small hole 58. The washing water injected from the small hole 58 falls on the heater cover 40 toward the front oblique to the right. For this reason, since the heater cover 40 can be wash | cleaned by the washing water sprayed from the small hole 58 at the time of drainage, it is possible to prevent the formation of a large amount of bubbles in the washing tank 3. Therefore, the foam generated in the washing tank 3 can be effectively removed, and even the use of kitchen detergent can sufficiently suppress the generation of foam.

In addition, when the washing water stored in the washing tank 3 is discharged to the outside of the washing machine, foam remaining on the heater cover 40 or kitchen detergent accumulated in the heater receiving recess 48 together with the washing water sprayed from the small hole 58 Can be washed off Thus, if water is subsequently supplied into the washing tank 3 (for example, once the washing water in the washing tank 3 is discharged to the outside of the washing machine after the washing stroke, tap water is again supplied into the washing tank 3). It is possible to prevent the bubbles from dissolving in the water supplied to the rinse stroke). Therefore, it is possible to prevent the rinsing performance from deteriorating or foaming again in the next stroke (for example, washing stroke) when the next rinsing stroke is performed. Therefore, the foam which arises in the washing tank 3 can be removed more effectively, and generation of foam can fully be suppressed even if kitchen detergent is used.

FIG. 9 is a cross-sectional view showing the internal configuration of the ceiling nozzle 35, showing a cross section of the ceiling nozzle 35 viewed from the right side in the vertical plane. 10 is the figure which looked at the ceiling nozzle 35 from the back. 11 is a view of the ceiling nozzle 35 viewed from below.

9 to 11, the ceiling nozzle 35 has a substantially cylindrical nozzle portion 59, and a substantially circular flange portion extending in the radial direction (horizontal direction) from an upper end of the nozzle portion 59. (60) and a substantially cylindrical connecting portion (61) for extending through the flange portion (60) and for inserting and connecting the tip of the water pipe (36). In the ceiling surface 3D of the washing tank 3, a through hole 62 for inserting the nozzle portion 59 of the ceiling surface nozzle 35 is formed. The ceiling nozzle 35 is mounted such that the nozzle portion 59 is inserted through the through hole 62 and the lower surface of the flange portion 60 abuts on the outer surface of the washing tank 3.

Below the nozzle part 59, the 1st deflector 63 and the 2nd deflector 64 connected with each other are arrange | positioned so that the opening of the lower part of the nozzle part 59 may be opposed. The first deflector 63 is located forward from the vicinity of the axis of the nozzle portion 59, and the second deflector 64 is located rearward from the vicinity of the axis of the nozzle portion 59. For this reason, the 1st injection port 65 is formed between the front of the lower edge of the nozzle part 59, and the 1st deflector 63, and at the back of the lower edge of the nozzle part 59, and a 2nd deflector. The second injection port 66 is formed between the 64. The washing water sprayed downward from the water supply pipe 36 through the nozzle portion 59 is sprayed forward from the first spray port 65 and sprayed backward from the second spray port 66.

The first deflector 63 includes an upper surface 63A that is substantially horizontal (a slightly lowered inclination) facing the nozzle portion 59, a rear surface 63B that is raised upward from the rear end of the upper surface 63A, The 1st protrusion 63C which protrudes upwards from the front end of 63 A of upper surfaces is provided. The washing water from the nozzle portion 59 toward the first deflecting body 63 reaches the upper surface 63A and is led forward along the upper surface 63A. A part of the washing water guided forward along the upper surface 63A comes in contact with the first projection 63C and is dispersed in the left and right directions.

In the front end of the flange part 60, the 1st suspension wall 67 extended in the left-right direction protrudes downward, and is formed. This 1st suspension wall 67 is arrange | positioned at fixed intervals with respect to the nozzle part 59 and the 1st deflector 63, and extends below the 1st deflector 63. As shown in FIG. Of the washing water guided forward along the upper surface 63A of the first deflector 63, the washing water sprayed forward without being dispersed in the left and right directions by the first protrusion 63C touches the first suspension wall 67. It is distributed in the left and right directions.

On the other hand, the 2nd deflector 64 makes the inclined surface 64A which has the inclination which the back facing the nozzle part 59 fall, and the 2nd projection 64B which protrudes upward from the rear end of this inclined surface 64A. Equipped. The washing water directed from the nozzle portion 59 to the second deflecting body 64 touches the inclined surface 64A and is led backward along the inclined surface 64A. A part of the washing water guided backward along the inclined surface 64A comes in contact with the second projection 64B and is dispersed in the left and right directions.

At the rear end of the nozzle portion 59, a second suspension wall 68 extending in the horizontal direction protrudes downward. This 2nd suspension wall 68 is arrange | positioned at regular intervals between the front end (lower end) and the 2nd protrusion 64B. Of the washing water guided downward along the inclined surface 64A of the second deflector 64, the washing water sprayed downward without being dispersed in the left-right direction by the second protrusion 64B touches the second suspension wall 68. It is distributed in the left and right directions.

With the above-described configuration, at the time of washing, as shown by arrows in FIGS. 9 and 10, the washing water sprayed from the first injection holes 65 is dispersed in the left and right directions and is obliquely forward in the shower shape (nearly downward). ) And at the same time, the washing water sprayed from the second injection port 66 is distributed in the left and right directions to face the rear obliquely in the shower shape. Therefore, as mentioned above, the outer surface of the cup accommodated in the 2nd row of the cup accommodating part 13 can be wash | cleaned by the wash water sprayed from the 1st injection hole 65, and the wash water sprayed from the 2nd injection hole 66 is carried out. It is possible to wash the outer surface of the cup accommodated in the third row of the cup receiving portion 13 by the.

At the time of washing, the pump motor is rotated forward so that the washing water sucked from the reservoir 15 through the circulation port 22 to the washing and draining pump 20 (washing pump room) through the water supply pipe 36 and the ceiling nozzle 35 Although it has already been described that it is transferred to the bottom surface and sprayed downward from the ceiling nozzle 35, even when the pump motor is reversed at the time of drainage and the washing impeller in the washing pump chamber is rotated in the opposite direction from the washing, Although the water pressure is much lower than the hour, the washing water is pumped from the washing pump room to the water pipe 36. Therefore, the washing water is sprayed from the ceiling nozzle 35 even though the water is slightly drained.

According to such a structure, since the washing tank 3 or the dish basket 9 can be wash | cleaned by the washing water sprayed from the ceiling nozzle 35 at the time of drainage, it is recognized that a large amount of foam is generated in the washing tank 3. You can prevent it. Therefore, the foam generated in the washing tank 3 can be effectively removed, and even the use of kitchen detergent can sufficiently suppress the generation of foam.

In addition, when the washing water stored in the washing tank 3 is discharged to the outside of the washing machine, the foam remaining in the washing tank 3 or the dish basket 9 can be washed together with the washing water sprayed from the ceiling nozzle 35. Thus, if water is subsequently supplied into the washing tank 3 (for example, once the washing water in the washing tank 3 is discharged to the outside of the washing machine after the washing stroke, tap water is again supplied into the washing tank 3). Foaming in the supplied water can be prevented in the case of rinsing). Therefore, it is possible to prevent the rinsing performance from deteriorating or foaming again in the next stroke (for example, washing stroke) when the next rinsing stroke is performed. Therefore, the foam which arises in the washing tank 3 can be removed more effectively, and generation of foam can fully be suppressed even if kitchen detergent is used.

FIG. 12 is a side view of the washing tank 3 seen from the right side, and is schematically shown so that the inside of the air passage member 69 is visible.

With reference to FIG. 12, the air path member 69 which comprises the air path at the time of conveying air outside the washing machine from the blower (not shown) to the washing tank 3 is attached to the right side wall of the washing tank 3 on the outside. It is. The air passage member 69 is a hollow member, which includes a base portion 70 extending upward from the lower right center lower portion of the washing tank 3 and an obliquely upwardly upwardly extending rearward from an upper end of the root portion 70. The first inclined portion 71, the curved portion 72 extending upwardly from the upper end of the first inclined portion 71 and curved downward in a substantially U shape, and downwardly obliquely downward from the lower end of the curved portion 72. A second inclined portion 73 extending toward the end portion and a terminal portion extending from the lower end of the second inclined portion 73 and connected to a tuyere 75 formed in the front lower portion of the right side wall of the washing tank 3 ( 74).

The lower end of the base portion 70 of the air passage member 69 is connected to a blower, and the air outside the washing machine sucked into the machine by the blower is discharged from the air outlet 75 through the air blower member 69 to the washing tank 3. ) Is transported in. The tuyeres 75 are located slightly above the heaters 39, and the air transferred from the tuyeres 75 to the bottom in the washing tank 3 is heated by the heaters 39.

In the terminal portion 74 of the air passage member 69, a bubble detection sensor 76 for detecting bubbles generated in the washing tank 3 is disposed. The bubble detection sensor 76 is, for example, an optical sensor, which is attached to the rear surface of the terminal portion 74 and emits light 76A for irradiating light toward the front (slightly downward direction); A light receiving portion 76B is attached to the front surface of the terminal portion 74 so as to face 76A and receives light emitted from the light emitting portion 76A. When a large amount of foam is generated in the washing tank 3, the foam enters into the air passage member 69 (in the end 74) through the tuyeres 75. And when the bubble which entered into the air path member 69 reaches the optical axis of the light irradiated from the light emitting part 76A, the light quantity received by the light receiving part 76B will reduce. In this way, the bubble generation state in the washing tank 3 can be detected based on the change in the amount of light detected by the light receiving portion 76B.

The distal end portion of the branch hose 77 branched from the drainage passage is connected to the end portion of the curved portion 72 of the air passage member 69 on the second inclined portion 73 side. At the time of drainage, a part of the washing water discharged from the drainage pump chamber of the washing and draining pump 20 is guided into the air passage member 69 through the branch hose 77, and is directed from the curved portion 72 toward the second inclined portion 73. Fall down. In the second inclined portion 73 of the air passage member 69, a first rib 78 extending in the same direction as the direction in which the second inclined portion 73 extends is formed. This first rib 78 extends from the upper end to the lower end of the second inclined portion 73, and the washing water dropped from the branch hose 77 into the second inclined portion 73 is along the first rib 78. It is directed downwards.

At the lower end of the second inclined portion 73, a substantially inverted V-shaped second rib 79 is disposed at a constant interval with respect to the lower end of the first rib 78. The washing water guided downward along the first rib 78 falls on the top of the second rib 79, so that the washing water dropped on the second rib 79 is distributed forward and backward. The rear end and the front end of the second rib 79 are located near the light emitting portion 76A and the light receiving portion 76B of the bubble detection sensor 76, respectively. The washing water flowing on the second rib 79 is the light emitting portion 76A and the light emitting portion 76A. It comes in contact with the light receiving part 76B. According to this structure, the dirt etc. which adhered to the light emitting part 76A and the light receiving part 76B can be wash | cleaned with the wash water supplied into the air path member 69 at the time of drainage.

FIG. 13 is a cross-sectional view taken along the line E-E of FIG. 12.

Referring to FIG. 13, in this embodiment, the tuyeres 75 have a hood member for guiding air transferred from the tuyeres 75 into the washing tank 3 to the heater 39 side (beveled downward). Is not equipped. According to this configuration, it is possible to prevent a situation in which bubbles generated in the washing tank 3 are blocked by the hood member and do not enter the air passage member 69 (in the end 74) satisfactorily. For this reason, the time until the foam which generate | occur | produced in the washing tank 3 reaches | attains the foam detection sensor 76 is delayed, and it can prevent that it becomes impossible to perform foam detection satisfactorily.

However, in the case of adopting a configuration in which no hood member is formed, since the air transferred from the tuyeres 75 into the washing tank 3 cannot be guided to the heater 39 side, the air from the tuyeres 75 is heated to a heater ( 39), it becomes impossible to warm it well. Therefore, in this embodiment, it is set as the structure which the inclined surface 80 in which the left side fell in the lower part of the right side surface of the terminal part 74 of the air path member 69 was formed. According to this configuration, the air passed through the air passage member 69 toward the tuyeres 75 is guided obliquely downward from the left side along the inclined surface 80, and thus the air is transferred from the tuyeres 75 into the washing tank 3. The air to be introduced can be directed to the heater 39 side. Therefore, since the air from the tuyere 75 can be warmly heated by the heater 39, the drying efficiency at the time of drying can be improved.

This invention is not limited to the content of the above embodiment, A various change is possible within the range as described in a claim.

For example, as a mechanism for removing bubbles generated in the washing tank 3, in addition to the mechanism shown in this embodiment, an injection port is formed on the lower surface of the rotating nozzle arm 26, and is injected downward from this injection port. The structure which can wash | clean the bottom 3B of the washing tank 3 with wash water can also be employ | adopted.

The small holes 58 and the ceiling nozzles 35 are not limited to spraying the washing water, and may spray tap water. In this case, the timing at which tap water is injected from the small hole 58 may be water supply, not drainage.

In addition, the water supply pipe 54 is not limited to injecting tap water, but may inject washing water. In this case, the timing at which the washing water is injected from the water supply pipe 54 may be at the time of drainage, not at the time of water supply.

In the case where the kitchen detergent is accommodated in the dedicated detergent container 19A, the means for regulating the kitchen detergent dropped from the dedicated detergent container 19A into the washing tank 3 does not enter the heater receiving recess 48. It is not limited to the protrusion part 53, For example, concave heat may be sufficient.

The exclusive detergent accommodating part 19A and the kitchen detergent accommodating part 19B are not limited to the structure arrange | positioned at the back surface of the lower door 6, You may be arrange | positioned in the front part of the dish basket 9, etc.

The ceiling nozzle 35 is not limited to washing the cup accommodated in the cup receiving portion 13, and washing the dishes by spraying the washing water from the top toward the other dishes contained in the dish basket 9. do.

The means for spraying the washing water toward the tableware housed in the dish basket 9 is not limited to the rotating nozzle arm 26, the fixed nozzle arm 29, and the ceiling nozzle 35, for example, the washing tank 3. It may be a configuration including a nozzle and the like provided on the left and right side of the.

The dish basket 9 is not limited to the configuration including the upper basket 9A and the lower basket 9B separated from each other, and the upper basket 9A and the lower basket 9B may be integrally formed.

Since the foam accumulated in the washing tank can be washed well, it is possible to prevent the formation of a large amount of foam in the washing tank.

BRIEF DESCRIPTION OF THE DRAWINGS The perspective view which looked at the dishwasher which concerns on one Embodiment of this invention from the front side.

2 is a cross-sectional view of the cross section when the dishwasher is cut in a vertical plane along the front and rear direction, as viewed from the right.

3 is a front view of the dishwasher viewed from the front with the upper and lower doors removed.

4 is a cross-sectional view seen from above when the dishwasher is cut into a horizontal plane along the front and rear directions.

5 is a partial cross-sectional view of the lower door.

6 is a cross-sectional view taken along the line C-C in FIG.

7 is a front view of a part of the rear surface of the washing tank;

FIG. 8 is a cross-sectional view taken along the line D-D in FIG. 7.

9 is a cross-sectional view illustrating an internal configuration of a ceiling nozzle.

10 is a view of the ceiling nozzle viewed from the rear;

11 is a view of the ceiling nozzle viewed from below;

12 is a side view of the wash tank seen from the right side.

FIG. 13 is a cross-sectional view taken along the line E-E in FIG. 12.

* Explanation of symbols for the main parts of the drawings *

1: dishwasher

3: washing tank

3B: bottom

9: tableware basket

9A: upper basket

9B: lower basket

13: cup receptacle

15: reservoir

19A: Dedicated Detergent Receptacle

20: wash and drain pump

26: rotating nozzle arm

29: fixed nozzle arm

35: ceiling nozzle

39: heater

40: heater cover

48: heater accommodating recess

53: protrusion

54: water supply pipe

55: cup nozzle

58: small hole

Claims (9)

A wash tank in which wash water is stored; Washing means for circulating the washing water stored in the washing tank and spraying the washing water toward the dishes contained in the washing tank; A heater disposed at the bottom of the washing tank and capable of heating the washing water stored in the washing tank when washing dishes; A heater cover disposed above the heater, And foam removing means for removing bubbles accumulated on the heater cover by spraying water toward the heater cover. The dish washing machine according to claim 1, wherein the bubble removing means sprays a part of the washing water toward the heater cover when discharging the washing water stored in the washing tank to the outside of the washing machine. A wash tank in which wash water is stored; A dish basket for holding tableware disposed in the washing tank; Washing means for circulating the washing water stored in the washing tank and spraying the washing water toward the dishes held in the dish basket from the top of the dish basket; And defoaming means for removing bubbles in the washing tank by spraying water from the washing means when discharging the washing water stored in the washing tank to the outside of the washing machine. According to claim 3, The dish basket, Cup holding unit for holding a cup, The washing means is a dishwasher, characterized in that for spraying the washing water from the top of the cup holder toward the cup held in the cup holder. A wash tank in which wash water is stored; Washing means for circulating the washing water stored in the washing tank and spraying the washing water toward the dishes contained in the washing tank; A dish basket for holding dishes, arranged at regular intervals with respect to the bottom surface of the washing tank; And a foam removing means for removing bubbles accumulated on the bottom surface of the washing tank by spraying water toward the bottom surface of the washing tank through the bottom surface of the washing tank and the dish basket. Dishwasher characterized by the above. The dish washing machine according to claim 5, wherein the bubble removing means sprays tap water toward the bottom surface of the washing tank when water is supplied into the washing tank. A wash tank in which wash water is stored; Washing means for circulating the washing water stored in the washing tank and spraying the washing water toward the dishes contained in the washing tank; A heater capable of heating the washing water stored in the washing tank when washing dishes; A heater accommodating portion disposed in a bottom portion of the washing tank to accommodate the heater; A detergent receiving portion accommodating kitchen detergent supplied into the washing tank so that kitchen detergent can be used for washing dishes; And a regulating means for regulating that the kitchen detergent does not enter the heater receiving portion when the kitchen detergent is supplied into the washing tank from the detergent receiving portion side. According to claim 7, It is formed on the bottom surface of the washing tank, and comprises a water storage recess for storing the washing water when washing the dishes, And said regulating means guides the kitchen detergent supplied from said detergent container into said washing tank toward said water reservoir. A wash tank in which wash water is stored; Washing means for circulating the washing water stored in the washing tank and spraying the washing water toward the dishes contained in the washing tank; A heater capable of heating the washing water stored in the washing tank when washing dishes; A heater accommodating portion disposed in a bottom portion of the washing tank to accommodate the heater; A detergent accommodating portion accommodating kitchen detergent supplied into the washing tank so that kitchen detergent can be used for washing dishes; And the detergent container is disposed at a position where the kitchen detergent supplied from the detergent container to the washing tank does not enter the heater container.