JP3025742B2 - Dishwasher - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dishwasher in which a washing nozzle and a rinsing nozzle which are rotatable concentrically are arranged in a washing room, respectively, to perform a washing operation and a rinsing operation of an object to be washed.

[0002]

2. Description of the Related Art Conventionally, a dishwasher for arranging a washing nozzle and a rinsing nozzle at the top and bottom of a washing chamber so as to be rotatable, and washing and rinsing an object to be washed such as a dish disposed between them is, for example, It is disclosed in Japanese Utility Model Publication No. 61-35175 or Japanese Utility Model Publication No. 61-36209.

[0003] First, a cleaning operation of an object to be cleaned is performed by using cleaning water sprayed downward from an upper cleaning nozzle provided in an upper portion of a cleaning chamber and cleaning water sprayed upward from a lower cleaning nozzle provided in a lower portion. Performing, thereafter, includes a rinse water sprayed downward from an upper rinse nozzle also provided at the upper part of the cleaning chamber, and a detergent adhered to the object to be cleaned by the rinse water sprayed upward from a lower rinse nozzle provided at the lower part. The rinsing operation for rinsing off the washing water is performed to end one cycle of operation.

[0004] In this type of dishwasher, dirty washing water adhering to the ceiling of the washing room or washing water adhering to the upper washing nozzle after passing the object to be washed from the lower washing nozzle during the washing operation is operated. Since the cleaning agent is dropped on the object to be cleaned after cleaning, the detergent remains on the object to be cleaned, so that good rinsing cannot be performed. Therefore, for example, Japanese Utility Model Publication No. 5-20284 (A47L15)
/ 42), the upper rinsing nozzle was provided with a second rinsing nozzle (hereinafter, referred to as an auxiliary rinsing nozzle port) for injecting rinsing water upward, and attached to the upper top plate and the upper cleaning nozzle during the rinsing operation. Rinse the wash water.

[0005]

However, in such a dishwasher, during the washing operation and the rinsing operation, the non-operating (rotationally stopped) nozzle (upper / lower washing nozzle or upper / lower rinsing nozzle) operates. This impedes the injection of water from the nozzle openings of the existing (rotating) nozzles (upper and lower rinsing nozzles or upper and lower washing nozzles).

[0006] Therefore, it is impossible to efficiently apply the washing water or the rinsing water to the object to be cleaned installed in the cleaning room in the shielded part, and the cleaning effect or the rinsing effect of the part is impaired. There has been a problem that uniform cleaning and rinsing of the object to be cleaned cannot be realized. In addition, since the upper washing nozzle that has stopped rotating during the rinsing operation results in that the rinsing water from the auxiliary rinsing nozzle port of the upper rinsing nozzle is also blocked, after the rinsing operation,
There has also been a problem that the washing water attached to the ceiling of the shaded portion drops on the object to be washed.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional technical problem, and has as its object to provide a dishwasher capable of uniformly cleaning an object to be cleaned. Another object of the present invention is to provide a dishwasher capable of effectively preventing detergent remaining after a rinsing operation in addition to the above.

[0008]

According to a first aspect of the present invention, there is provided a dishwasher provided in a washing chamber, wherein the washing nozzle and the rinsing nozzle are rotatably arranged concentrically, and the washing nozzle is provided with the washing nozzle. A plurality of cleaning nozzle ports to be provided, provided in the rinsing nozzle, a plurality of rinsing nozzle ports for injecting rinsing water, provided in at least one of the cleaning nozzle and the rinsing nozzle, the other nozzle with the rotation of the nozzle An interlocking body protruding so as to abut is provided. The interlocking body synchronously rotates the cleaning nozzle and the rinsing nozzle at an angle avoiding the nozzle openings during the cleaning operation and the rinsing operation.

According to a second aspect of the present invention, there is provided a dishwasher provided at an upper portion of a washing chamber and having a plurality of washing nozzle ports for spraying washing water downward, and a rotatable upper washing nozzle, and the upper washing nozzle. An upper rinsing nozzle having a plurality of rinsing nozzle ports that rotates concentrically with the upper cleaning nozzle at a lower position and that sprays rinsing water downward, and a plurality of rinsing nozzles that are provided at a lower portion of the cleaning chamber and spray cleaning water upward. A rotatable lower cleaning nozzle having a cleaning nozzle port, and a lower rinsing nozzle having a plurality of rinsing nozzle ports that rotate concentrically with the lower cleaning nozzle above the lower cleaning nozzle and inject rinsing water upward, The upper rinse nozzle is provided in a smaller number than the rinse nozzle port, and has an auxiliary rinse nozzle port for spraying rinse water upward, a cleaning tank for storing cleaning water, and a vertical cleaning nozzle from the cleaning tank. A washing pump for supplying washing water to the washing machine, a booster tank for storing rinsing water, a rinsing pump for feeding rinsing water higher than the washing water from the booster tank to the upper and lower rinsing nozzles, an upper washing nozzle and an upper washing nozzle. An interlocking member is provided on at least one of the rinsing nozzles and protrudes so as to contact the other nozzle with the rotation of the nozzle. In addition to performing the washing operation and the rinsing operation, the interlocking body synchronously rotates the upper washing nozzle and the upper rinsing nozzle at an angle that avoids the nozzle openings during the washing operation and the rinsing operation.

[0010]

According to the dishwasher of the present invention, at least one of the washing nozzle and the rinsing nozzle is provided with an interlocking member projecting so as to contact the other nozzle with the rotation of the nozzle. During the washing operation and the rinsing operation, the washing nozzle and the rinsing nozzle are rotated synchronously at an angle that avoids each nozzle port, so that the nozzle that is not operating during the washing operation and the rinsing operation as in the related art operates. Thus, it is possible to prevent the water jet from the nozzle opening of the nozzle being cut off. Therefore,
The object to be cleaned can efficiently and uniformly realize a cleaning operation and a rinsing operation.

In particular, according to the dishwasher according to the second aspect of the present invention, in addition to this, the rinse water from the auxiliary rinse nozzle opening of the upper rinse nozzle is not blocked by the upper rinse nozzle during the rinsing operation. The washing water attached to the ceiling or the like of the washing room can be reliably washed away. Therefore, the residual adhesion of the washing water to the object to be washed after the rinsing operation is eliminated, the rinsing effect can be maintained satisfactorily, and the hygiene can be improved.

[0012]

Next, an embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 is a vertical sectional side view of the dishwasher 1 of the present invention, FIG. 2 is an enlarged side view of a partially cutout of an upper washing nozzle 4 and an upper rinsing nozzle 5, and FIG. In each figure, a washing room 3 is formed in a main body case 2 of a dishwasher 1, and the front surface of the washing room 3 is opened and closed by a door (not shown). At the upper part of the cleaning chamber 3, an upper cleaning nozzle 4 as a cleaning nozzle having a plurality of cleaning nozzle ports 4A for injecting cleaning water downward is rotatably disposed, and slightly lower than the upper cleaning nozzle 4. The upper cleaning nozzle 4
An upper rinsing nozzle 5 is disposed as a rinsing nozzle which rotates concentrically.

The upper rinsing nozzle 5 is provided with a plurality of rinsing nozzle ports 5A for injecting rinsing water downward and a rinsing nozzle port 5A located at the base of the upper rinsing nozzle 5 and located on the opposite side between the rinsing nozzle ports 5A and 5A. It has a single auxiliary rinse nozzle port 5B for injecting water upward. The auxiliary rinsing nozzle port 5B is formed of a nozzle tip having a wide spray angle, and the upper rinsing nozzle 5 symmetrical to the auxiliary rinsing nozzle port 5B is provided with a rod-shaped interlocking body 5C that stands upward and protrudes upward. Is provided.

A lower cleaning nozzle 6 as a cleaning nozzle having a plurality of cleaning nozzle ports (not shown) for injecting cleaning water upward is provided rotatably below the cleaning chamber 3. A lower rinsing nozzle 7 as a rinsing nozzle having a plurality of rinsing nozzle ports (not shown) for injecting rinsing water upward is provided rotatably concentrically with the lower cleaning nozzle 6 slightly above the nozzle 6. I have.

On the other hand, a cleaning tank 12 whose upper surface is covered with a filter (not shown) is defined below the main body case 2 below the cleaning chamber 3, and an overflow pipe 13 is provided upright in the cleaning tank 12. The water level of the washing tank 12 is regulated to a predetermined level. On the other hand, between the upper and lower washing nozzles 4 and 6 and the washing tank 12, washing water of about + 60 ° C. mixed with the detergent stored in the washing tank 12 is circulated to the upper and lower washing nozzles 4 and 6 via the washing pipe 18. A cleaning pump 14 for rinsing is provided, and between the upper and lower rinsing nozzles 5 and 7 and the booster tank 15 juxtaposed to the main body case 2, rinsing water of about + 80 ° C. stored in the booster tank 15 is supplied to the rinsing pipe 19. A rinsing pump 16 for feeding the upper and lower rinsing nozzles 5 and 7 through the rinsing nozzle is provided. The booster tank 15 is also provided with an overflow pipe 21 for regulating the predetermined water level, and further provided with a water supply valve 22 for controlling the supply of hot water from a water heater (not shown) to the booster tank 15.

Next, referring to FIG.
The detailed structure of the upper rinsing nozzle 5 will be described. still,
The lower cleaning nozzle 6 and the lower rinsing nozzle 7 have basically the same structure, and thus the description is omitted. A support 24 serving as a nozzle bearing device is provided below the ceiling 2A of the main body case 2. The support 24 has an inner tube 26 and an outer tube 27 connected coaxially. The outer tube 27 is connected to the washing pipe 18, and the inner pipe 26 is connected to the rinsing pipe 19.

A cleaning nozzle mounting portion 29 is formed near the outer tube opening 28 of the outer tube 27, and the upper cleaning nozzle 4 is rotatably provided on the cleaning nozzle mounting portion 29 on a horizontal plane. . Also, at the lower end of the inner tube 26, a collar 31,
An inner pipe connector 34 having an inner pipe opening 32 and an end plug 33 is attached, and the upper rinsing nozzle 5 is rotatably mounted on the inner pipe connector 34 on a horizontal plane. In this state, the interlocking body 5C of the upper rinse nozzle 5 extends to the upper side of the upper cleaning nozzle 4 above.

Next, the operation of the dishwasher 1 according to the present invention will be described with reference to FIGS. First, the cleaning chamber 3 between the upper and lower rinsing nozzles 5 and 7 (the upper and lower cleaning nozzles 4 and 6).
A dish to be washed (not shown) made of dishes such as dishes is stored in the inside,
Start the cleaning operation. In this cleaning operation, the cleaning water stored in the cleaning tank 12 is circulated from the cleaning pipe 18 to the upper and lower cleaning nozzles 4 and 6 by the operation of the cleaning pump 14.

The circulated washing water is jetted downward from the washing nozzle ports 4A,... Of the upper washing nozzle 4, and is jetted upward from the washing nozzle port of the lower washing nozzle 6 to be sprayed on the object to be washed. And a part thereof serves as a rotational driving force of the upper and lower cleaning nozzles 4 and 6, so that the upper and lower cleaning nozzles 4 and 6 rotate counterclockwise as viewed from above as shown in FIG. The jetted washing water falls into the washing tank 12 through a filter (not shown), and the upper and lower washing nozzles 4 again.
Circulated to 6.

During this cleaning operation, no rinsing water is supplied to the upper rinsing nozzle 5 and, therefore, the rinsing water is stopped without generating a propulsive force, but when the upper rinsing nozzle 4 starts rotating as described above. Eventually, the upper cleaning nozzle 4 comes into contact with the interlock 5C of the upper rinsing nozzle 5. As a result, the upper rinse nozzle 5 is pushed by the upper cleaning nozzle 4,
As a result, the upper cleaning nozzle 4 and the upper rinsing nozzle 5 rotate at a predetermined angle (in a state of being out of phase) with each other and rotate synchronously (FIG. 4).

The angle formed by the two nozzles 4 and 5 is set so that the upper rinsing nozzle 5 is positioned so as to avoid the cleaning nozzle openings 4A of the upper cleaning nozzle 4 as shown in FIG. As a result, the rinsing nozzle 5 not operating during the cleaning operation
However, it is possible to prevent blocking of the cleaning water from the cleaning nozzle ports 4A,... Of the upper cleaning nozzle 4, and it is possible to efficiently and uniformly wash the object to be cleaned.

When such a cleaning operation is performed for, for example, 90 seconds, the cleaning pump 14 is stopped to stop the cleaning operation, and subsequently, a rinsing operation for, for example, 10 seconds is started. In this rinsing operation, the rinsing pump 16 operates to supply the rinsing water in the booster tank 15 to the upper and lower rinsing nozzles 5 and 7 through the rinsing pipe 19. The supplied rinsing water is jetted downward from the rinsing nozzle ports 5A,... Of the upper rinsing nozzle 5, and is jetted upward from the rinsing nozzle port of the lower rinsing nozzle 7, and is sprayed on the object to be cleaned to rinse them. And partly up and down rinse nozzle 5,
7, the upper and lower rinse nozzles 5, 7 rotate counterclockwise as viewed from above as shown in FIG. The injected rinse water similarly falls through a filter (not shown) into the washing tank 12.

A part of the rinsing water supplied to the upper rinsing nozzle 5 is sprayed upward from the auxiliary rinsing nozzle port 5B at a wide angle. The upward rinsing water is used to wash away the cleaning water attached to the ceiling 2A of the main body case 2 (the cleaning room 3) in the cleaning operation. Further, during this rinsing operation, the washing water is not circulated to the upper washing nozzle 4 and thus stops without generating a propulsive force. However, when the upper rinsing nozzle 5 starts rotating, the state shown in FIG. Eventually, the state shown in FIG. 5 is reached, and the interlocking body 5C of the upper rinsing nozzle 5 comes into contact with the upper cleaning nozzle 4. In the process of shifting from the state shown in FIG. 4 to the state shown in FIG. 5, the auxiliary rinsing nozzle port 5B of the upper rinsing nozzle 5 moves below the upper cleaning nozzle 4, so that the cleaning water attached to the upper cleaning nozzle 4 is also washed away.

After the state shown in FIG. 5 is reached, the upper cleaning nozzle 4 is pushed by the upper rinsing nozzle 5 contrary to the above. As a result, the upper cleaning nozzle 4 and the upper rinsing nozzle 5 are mutually moved. A predetermined angle is formed (in a state where the phases are shifted), and the rotation is performed synchronously (FIG. 5). The angle formed by the two nozzles 4 and 5 is different from that of the upper cleaning nozzle 4 shown in FIG.
The position is set so as to avoid the auxiliary rinse nozzle port 5B of the upper rinse nozzle 5 as shown in FIG. Thereby, it is possible to prevent the upper cleaning nozzle 4 that is not operating during the rinsing operation from blocking the rinsing water from the auxiliary rinsing nozzle port 5B of the upper rinsing nozzle 5, and the main body case 2
The washing water attached to the ceiling 2A of the (washing room 3) can be reliably washed away. Therefore, it is possible to effectively prevent the inconvenience of the washing water dripping on the object to be washed after the rinsing operation.

In the embodiment, the interlocking member 5C is provided upright on the upper rinsing nozzle 5. However, the upper cleaning nozzle 4 may be provided with an interlocking member which projects downward and comes into contact with the upper rinsing nozzle 5. However, also in this case, the interlocking body is each nozzle port 4A, 5
The upper cleaning nozzle 4 and the upper rinsing nozzle 5 are rotated synchronously at an angle that avoids A and 5B. Further, an interlocking body is provided not only for the upper nozzles 4 and 5 but also for the lower rinsing nozzle 7 or the lower cleaning nozzle 6 located below, and
The rinsing effect may be made uniform.

[0026]

As described above in detail, according to the present invention, at least one of the washing nozzle and the rinsing nozzle is provided with:
An interlocking member is provided to protrude so as to contact the other nozzle with the rotation of the nozzle, and the interlocking member synchronously rotates the cleaning nozzle and the rinsing nozzle at an angle to avoid each nozzle port during the cleaning operation and the rinsing operation. With this configuration, it is possible to prevent the non-operating nozzle from blocking the jet water from the nozzle opening of the operating nozzle during the cleaning operation and the rinsing operation as in the related art. Therefore, the object to be cleaned can be efficiently and uniformly cleaned and rinsed.

In particular, according to the second aspect of the present invention, the rinsing water from the auxiliary rinsing nozzle of the upper rinsing nozzle is not interrupted by the upper rinsing nozzle during the rinsing operation. It is possible to reliably wash off the washing water attached to the surface. Therefore, the residual adhesion of the washing water to the object to be washed after the rinsing operation is eliminated,
The rinsing effect can be maintained well, and the hygiene can be improved.

[Brief description of the drawings]

FIG. 1 is a vertical sectional side view of a dishwasher of the present invention.

FIG. 2 is a partially cut-away enlarged side view of an upper washing nozzle and an upper rinsing nozzle of the dishwasher of the present invention.

FIG. 3 is a perspective view of the upper rinse nozzle of the dishwasher of the present invention.

FIG. 4 is a view for explaining the operation of the upper washing nozzle and the upper rinsing nozzle in the washing operation of the dishwasher of the present invention.

FIG. 5 is a diagram illustrating the operation of the upper washing nozzle and the upper rinsing nozzle in the rinsing operation of the dishwasher of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Dishwasher 2 Main body case 2A ceiling 3 Washing room 4 Upper washing nozzle 4A Washing nozzle mouth 5 Upper rinsing nozzle 5A Rinsing nozzle mouth 5B Auxiliary rinsing nozzle mouth 5C Interlocking body 6 Lower washing nozzle 7 Lower rinsing nozzle

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A 63-98164 (JP, U) JP-A 4-80472 (JP, U) (58) Fields surveyed (Int. Cl. ⁷ , DB name) A47L 15/42

Claims (2)

(57) [Claims] 1. A cleaning nozzle and a rinsing nozzle provided in a cleaning chamber and rotatable concentrically, a plurality of cleaning nozzle ports provided in the cleaning nozzle and spraying cleaning water, and provided in the rinsing nozzle. A plurality of rinsing nozzle ports for injecting rinsing water, and an interlocking body provided in at least one of the cleaning nozzle and the rinsing nozzle, and protruding to contact the other nozzle with the rotation of the nozzle, A dishwasher, wherein the interlocking body synchronously rotates the washing nozzle and the rinsing nozzle at an angle that avoids the nozzle openings during the washing operation and the rinsing operation. 2. A rotatable upper cleaning nozzle provided at an upper part of a cleaning chamber and having a plurality of cleaning nozzle ports for jetting cleaning water downward, and below the upper cleaning nozzle and concentric with the upper cleaning nozzle. An upper rinsing nozzle having a plurality of rinsing nozzle ports for rotating and jetting rinsing water downward; and a rotatable lower rinsing provided at a lower portion of the cleaning chamber and having a plurality of cleaning nozzle ports for jetting rinsing water upward. A nozzle, and a lower rinse nozzle having a plurality of rinse nozzle ports that rotate concentrically with the lower rinse nozzle above the lower rinse nozzle and spray rinse water upward, and the upper rinse nozzle from the rinse nozzle port. There is also provided a small number of auxiliary rinse nozzle ports for injecting the rinse water upward, a cleaning tank for storing the rinse water, and supplying the rinse water from the rinse tank to the upper and lower rinse nozzles. A washing pump, a booster tank for storing rinsing water, a rinsing pump for supplying rinsing water higher than the washing water from the booster tank to the upper and lower rinsing nozzles, and at least one of the upper washing nozzle and the upper rinsing nozzle. An interlocking member provided on one of the nozzles and protruding so as to come into contact with the other nozzle with the rotation of the nozzle. And the interlocking body rotates the upper washing nozzle and the upper rinsing nozzle synchronously at an angle that avoids the nozzle openings during the washing operation and the rinsing operation.