JP2000157478A - Nozzle structure of dishwasher - Google Patents

Abstract

PROBLEM TO BE SOLVED: To secure an enough washing space without the enlargement of a dishwasher by diminishing a space for the nozzle disposition. SOLUTION: The nozzle bottom part 20 has a nozzle body 21 with a part of arm parts 37, 37, which horizontally stretches out to separate themselves from each other by putting the center between them, on an installation part 36 which is equipped to the lower part of a nozzle mounting part so as to rotate freely. There, the arm parts 37 are dented at a required depth and wholly open upward together and their opening parts 37a are sealed up each with a lit 22 removably. In inside of the arm part 37, a partition member 23 is arranged along the stretching direction at a rough center in the width direction crossing the stretching direction and it partitions the arm part 37 into a detergent room 24 and a rinse water room 25 being parallel at the same height in the inside of arm part 37.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a nozzle structure for a dishwasher, and more particularly, to a nozzle for internally supplying a chamber for jetting and supplying a cleaning liquid and a chamber for jetting and supplying a rinsing liquid. The present invention relates to a defined nozzle structure of a dishwasher.

[0002]

2. Description of the Related Art Dishwashers for automatically cleaning dishes such as dishes, bowls, cups and the like after serving for eating and drinking are installed in kitchens such as coffee shops and restaurants, and also in general households.
It has been widely and suitably used. In this dishwasher, a rotatable cleaning nozzle and a rinsing nozzle are vertically separated from each other in a cleaning chamber defined therein by covering a cleaning tank that is entirely open upward with a casing-like lid from above. The cleaning liquid and the rinsing liquid are sprayed on the tableware in the tableware rack accommodated in the cleaning room to rotate the respective nozzles by the reaction force of the cleaning liquid and the rinsing liquid to perform the cleaning and rinsing efficiently. I have.

As an example of the nozzle structure of the dishwasher, as shown in FIG. 10, the washing tank 13 of the dishwasher is provided with a nozzle section 70 composed of a washing nozzle 60 and a rinsing nozzle 50. I have. Cleaning nozzle 60
Is configured by radially disposing three cleaning pipes 64, 64, 64 on a main body 62 rotatably mounted on a mounting portion 61 provided in the cleaning tank 13, and a cleaning liquid passage in the mounting portion 61. The cleaning liquid supplied through the cleaning pipe 64 is injected through an injection port (not shown) formed in each cleaning pipe 64. The rinsing nozzle 50 is configured such that two rinsing pipes 54 having a predetermined length are disposed on a main body 52 rotatably mounted on the mounting portion 61 so as to be separated from each other. The rinsing liquid supplied through the rinsing liquid passage in 61 is injected through an injection port (not shown) formed in each rinsing pipe 54. In the washing chamber, two nozzle units 70 having the above-described configuration are disposed facing each other with a space therebetween in the up and down direction, so that objects to be washed such as tableware stored in the washing chamber can be efficiently cleaned from above and below. It is configured to be cleaned.

[0004]

In the nozzle section 70, as shown in FIG. 10, the cleaning nozzle 60 and the rinsing nozzle 50 are separately arranged in a state of being vertically overlapped. For this reason, the space in the height direction for the nozzle arrangement becomes large, and the washing machine itself becomes large when securing a sufficient washing space in the washing room, and the washing space is small when the washing machine is prevented from becoming large. Some disadvantages are pointed out.

The washing nozzle 60 and the rinsing nozzle 5
0, the cleaning pipe 64 and the rinsing pipe 54
Are constructed by joining the upper and lower halves by means of welding or the like, and have a structure that cannot be easily disassembled. That is, when residues and the like adhering to tableware enter the inside of the washing nozzle 60 and the rinsing nozzle 50, the cleaning operation is extremely difficult. Also,
The upper and lower halves of the cleaning pipe 64 and the rinsing pipe 54 may be joined by screwing an attachment member such as a screw. However, this structure requires a tool to remove or attach the attachment member during cleaning. The operation is complicated, and there is a risk that the mounting member may be lost.

[0006]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems inherent in the prior art, and has been proposed to solve the problem suitably. An object of the present invention is to provide a nozzle structure of a dishwasher, which can secure a necessary and sufficient washing space without increasing the size of the washer, and at the same time, can easily perform cleaning and inspection of the inside of the nozzle. I do.

[0007]

[Means for solving the problems] To overcome the above-mentioned problems,
In order to appropriately achieve the intended purpose, the nozzle structure of the dishwasher according to the present invention is a dishwasher for washing dishes with a washing liquid and a rinsing liquid sprayed from a nozzle disposed in a washing tank, wherein the nozzle By the partition member arranged inside,
A cleaning liquid chamber and a rinsing liquid chamber are defined in the nozzle in parallel at the same height level, a cleaning jet is provided at a position corresponding to the cleaning liquid chamber of the nozzle, and the rinsing liquid of the nozzle is provided. A rinsing jet is formed at a position corresponding to the chamber.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a nozzle structure of a dishwasher according to the present invention will be described with reference to the accompanying drawings by way of preferred embodiments. First, the basic structure of the dishwasher used in the present embodiment will be described with reference to FIGS. The dishwasher 10 basically includes a rectangular cleaning tank 13 that is open entirely upward, and a casing-like lid 12 that can cover the cleaning tank 13 from above and that can be raised and lowered. With the cleaning tank 13 covered, a cleaning chamber 14 is defined therein. As shown in FIG. 3, a supply source of a cleaning liquid or a rinsing liquid is provided inside the cleaning tank 13.
A lower nozzle 20 that is rotated by a reaction force of a cleaning liquid or a rinsing liquid supplied from a pressure (not shown) is horizontally rotatably provided. And, inside this lower nozzle 20,
As will be described later, a cleaning liquid chamber 24 to which the cleaning liquid is supplied, and a rinsing liquid chamber 25 to which the rinsing liquid is supplied after the cleaning is completed,
It is defined horizontally adjacent. Also the lower nozzle 2
At the upper position facing 0, an upper nozzle 40 that performs the same function is pivotally supported via a horizontal arm (not shown).

The lower nozzle 20 is shown in FIGS.
As shown in FIG. 6 and a lower nozzle mounting portion 16 described later,
A pair of arm portions 3 extending horizontally so as to be spaced apart from each other with the center thereof interposed therebetween.
It has a body 21 formed with 7,37. Each arm part 37
Is formed so as to be recessed at a required depth and open entirely upward, and its opening 37 a is closed by the lid 22. In each arm 37, a partition member 23 is disposed along the extending direction substantially at the center in the width direction crossing the extending direction, and the cleaning liquid chamber 24 and the rinsing liquid chamber 25 are provided in the arm 37. Are defined in parallel at the same height level. Lid 2
A packing material 26 is provided between the facing surfaces of the arm 2 and the arm portion 37 to improve the degree of adhesion between the two and prevent the leakage of the cleaning liquid or the rinsing liquid. The packing material 26 has openings 26a, 26b corresponding to the chambers 24, 25 so as not to block the cleaning liquid chamber 24 and the rinsing liquid chamber 25.

At the center of rotation of the mounting portion 36 of the main body 21, an insertion hole 28 into which a projecting shaft 17 (described later) serving as a pivot shaft is inserted is provided in the inner cylinder 38, and the inner cylinder 38
There are formed through holes 38a, 38a for communicating the rinsing liquid chambers 25, 25 with the insertion holes 28 on the peripheral surface of the (see FIG. 6). As shown in FIG. 4, a mounting ring 29 slidably fitted to a projection 16a projecting from the lower nozzle mounting portion 16 is provided on the lower surface of the mounting portion 36 outside the inner cylinder 38. It is provided concentrically with and projecting downward at a predetermined length.
Further, through holes 36a, 36a opened in the cleaning liquid chambers 24, and penetrating downward are formed on the bottom surface of the mounting portion facing between the inner cylinder 38 and the mounting ring 29 (see FIG. 6). The material of each member constituting the lower nozzle 20 is not particularly limited as long as it has heat resistance.
Since the packing material 26 is used to securely seal the cleaning liquid chamber 24 and the rinsing liquid chamber 25 with the lid 22, a material having a high elastic modulus, such as silicon rubber, is preferable. The cleaning liquid chamber 2 in the lid 22
A plurality of cleaning jets 47 are drilled at a position corresponding to 4, and a plurality of rinse jets 48 are drilled at a position corresponding to the rinsing liquid chamber 25. However, the numbers of the cleaning jets 47 and the rinsing jets 48 are not limited to the numbers shown in the drawing, but can be set to any numbers.

On both side surfaces in the width direction of each arm portion 37 of the lower nozzle 20, a pair of claws 33, 33 as engaged members are formed at predetermined intervals in the longitudinal direction. Also, on both side surfaces in the width direction of each of the lids 22, as a pair of engaging members which can engage with the claws 33, 33 so as to be able to freely engage and disengage with the claws 33, 33 without using a tool, etc. Are formed so as to extend downward by a predetermined length. That is, by engaging each engagement piece 34 with the corresponding claw 33, the lid 22 is attached to the arm portion 37 in close contact with the packing member 26. A gentle curved surface is formed on the side of the claw 33 where the engagement piece 34 is fitted (the upper side in FIG. 5), so that the engagement piece 34 can be easily engaged. ing. The engagement piece 34 has flexibility to permit engagement with and disengagement from the claw 33, and is configured to be able to release the engagement state of both by flexing the engagement piece 34 away from the claw 33. Is done.

Inside the cleaning tank 13, a cylindrical lower nozzle mounting portion 16 to which the lower nozzle 20 is detachably mounted and horizontally rotatable is fixedly disposed. Then, as shown in FIG. 4, the cleaning liquid supply path 30 and the rinsing liquid for supplying the cleaning liquid to the cleaning liquid chamber 24 and the rinsing liquid chamber 25 defined in the lower nozzle 20 are supplied to the lower nozzle mounting section 16. A rinsing liquid supply path 31 is defined. The rinsing liquid supply passage 31 is defined inside a cylindrical protruding shaft 17 which protrudes upward from the center of the lower nozzle mounting portion 16 and serves as a rotation center of the lower nozzle 20. The rinsing liquid chambers 25 and 25 are configured to communicate with the rinsing liquid supply path 31 via through holes 17b formed in the peripheral surface of the shaft 17 and through holes 38a and 38a formed in the inner cylinder 38.

The cleaning liquid supply path 30 is defined over the entire outer periphery of the protruding shaft 17 and is provided with the lower nozzle 2.
The cleaning liquid chambers 24 and 24 are supplied to the cleaning liquid chambers 24 and 24 via through holes 16b and 16b formed in the protrusion 16a in which the No. 0 mounting ring 29 is slidably fitted to the outside and through holes 36a and 36a formed in the mounting part 36. It is configured to communicate with the road 30. In other words, the lower nozzle 20 is
The lower nozzle 20 is pivotally supported by the lower nozzle mounting portion 16 so as to be horizontally rotatable by inserting the protruding shaft 17 into the insertion hole 28 and mounting the mounting ring 29 so as to fit outside the protruding portion 16a. At the same time, the cleaning liquid supply path 30 and the rinsing liquid supply path 31 are connected to the cleaning liquid chambers 24, 24 and the rinsing liquid chamber 2 respectively.
Connect to 5,25.

In a state where the lower nozzle 20 is mounted on the lower nozzle mounting portion 16, the shaft 17 protrudes from the insertion hole 28.
Are set to protrude by a predetermined length.
A male screw is threaded on the outer periphery of 7a. Then, the locking cap 18 obtained by threading the female screw corresponding to the male screw is
The lower nozzle 20 is screwed onto the projection 17a.
Are positioned in such a manner that they are not moved up and down. The method of fixing the locking cap 18 to the protruding portion 17a is not limited to the screwing structure, but may be, for example, a latch type. In addition, the projecting shaft 17 and the inner cylinder 38, the projecting portion 16a
An O-ring or the like is provided between the slidable contact portions between the lower nozzle mounting portion 16 and the lower nozzle 20, such as the mounting ring 29 and the like, to prevent liquid leakage.

The basic structure of the upper nozzle 40 is basically the same as the structure of the lower nozzle 20 described above, and the cleaning liquid chamber and the rinsing liquid chamber are provided at the same height level by a partition member therein. Are formed in parallel with each other, and each ejection port is attached to the upper nozzle attachment section 42 in a downward posture.

[0016]

Next, the operation of the nozzle structure of the dishwasher according to the present embodiment will be described with reference to the lower nozzle 20. When cleaning the tableware stored in the cleaning chamber 14, a cleaning liquid is supplied from a supply source of the cleaning liquid to the cleaning liquid supply path 30 of the lower nozzle mounting portion 16, and the cleaning liquid is supplied to the protrusion 16a as shown in FIG. The two arms 3 are inserted through the through holes 16b, 16b and the through holes 36a, 36a of the mounting portion 36.
The cleaning liquid chambers 24, 24 defined inside 7, 37 are supplied. Then, the cleaning liquid is jetted toward the tableware through the cleaning jet port 47 formed in the lid 22 to perform cleaning, and the lower nozzle 20 is horizontally rotated by the jet reaction force of the cleaning liquid.

When the above-described cleaning operation is completed, the supply of the cleaning liquid is stopped, and the rinsing liquid is supplied from the supply source of the rinsing liquid to the rinsing liquid supply passage 31 of the lower nozzle mounting portion 16. As shown in FIG. 4, the rinsing liquid is
7 are supplied to the rinsing liquid chambers 25, 25 defined inside the both arm portions 37, 37 via the through holes 17b of the inner cylinder 7 and the through holes 38a, 38a of the inner cylinder 38. Then, the rinsing liquid is jetted toward the tableware through the rinsing jet port 48 formed in the lid 22 to perform rinsing, and the lower nozzle 20 is horizontally rotated by the jet reaction force of the rinsing liquid.

The cleaning liquid chamber 24 and the rinsing liquid 25 defined inside the lower nozzle 20 are parallel at the same height level as shown in FIG.
The space for disposing is small, and a necessary and sufficient washing space can be secured without increasing the size of the washing machine itself. Since the space for disposing the upper nozzle 40 is also reduced, the size of the washing machine can be reduced. In the lower nozzle 20 of the embodiment, as shown in FIG.
Since the rinsing liquid chambers 25 and 25 of the rinsing liquids 7 and 37 are linearly defined with the insertion hole 28 interposed therebetween, the rinsing liquid supplied from the rinsing liquid supply path 31 gushes out vigorously to achieve efficient rinsing. You.

Next, when cleaning and checking the lower nozzle 20, the operation of the dishwasher 10 is stopped,
The casing lid 12 is flipped up and the washing tank 13
To release. In this state, the main body 2 in the lower nozzle 20
The lids 22 are removed from the respective arm portions 37 of FIG. That is, each lid 22 attached to each arm portion 37 can be easily removed by removing all the engagement pieces 34 from the corresponding claws 33. Further, since the engagement piece 34 has flexibility, it can be easily removed from the claw 33 without using a tool.

When the lid 22 is removed from the arm portion 37 in this manner, as shown in FIG. 1, the upper portions of the cleaning liquid chamber 24 and the rinsing liquid chamber 25 are completely open, so that the inside can be easily cleaned. This makes it possible to easily remove, for example, even when fine residues are stuck due to long-term use. Moreover, the cleaning liquid chamber 24
Since the rinsing liquid chamber 25 is arranged in parallel with the rinsing liquid chamber 25, there is no vertically overlapping portion or a member that hinders cleaning, so that cleaning can be performed easily in a short time. In addition, the lid 22 can be easily attached to the arm portion 37 without using a tool or the like, similarly to the removal.

The lower nozzle 20 can be cleaned while being mounted on the lower nozzle mounting portion 16,
If the locking cap 18 is removed from the projecting portion 17a, it can be easily removed from the lower nozzle mounting portion 16, so that external cleaning and inspection can be easily performed.

[0022]

Another embodiment In the above-described embodiment, an example has been described in which the claw 33 as an engaged member is formed on the arm portion 37 and the engaging piece 34 as an engaging member is formed on the lid 22. 7
As shown in the figure, the positions of the claw 33 and the engagement piece 34 are interchanged,
An engaging piece 34 as an engaging member may be formed on the arm portion 37, and a claw 33 as an engaged member may be formed on the lid 22. As shown in FIG. 8, the lower surface of the arm portion 37 is fully opened, and the lid 22 is opened from below the arm portion 37.
6 may be detachably mounted with the 6 interposed therebetween. In this configuration, a plurality of cleaning jets 47 are formed on the upper surface of the arm portion 37 in correspondence with the cleaning liquid chamber 24, and a plurality of rinsing jets 48 are formed in correspondence with the rinsing liquid chamber 25. Drilled. Further, in this case, since the packing material 26 for preventing liquid leakage is disposed on the opposite side of the ejection ports 47 and 48 for the cleaning liquid and the rinsing liquid, the deterioration of the packing material 26 due to the influence of the injection stress and the like is reduced, and replacement is performed. There is an advantage that the frequency can be reduced to reduce the running cost.
In the example of FIG. 8, the claw 33 is formed on the arm portion 37 and the engagement piece 34 is formed on the lid 22, but the configuration may be reversed as shown in FIG.

As shown in FIG. 9, the positions of the cleaning liquid chamber 24 and the rinsing liquid chamber 25 in the arm 37 may be changed. That is, the cleaning liquid chambers 24, 24 of both the arm portions 37, 37 are linearly defined, and the rinsing liquid chambers 25, 25 are defined beside them. In this case, the cleaning liquid from the cleaning liquid supply path 30 of the lower nozzle mounting section 16 is supplied to the two cleaning liquid chambers 24 and 24 vigorously, and the jetting power becomes strong. This is effective for severe oil stains. In the example shown in FIG. 9, the configuration shown in FIG. 7 or 8 can be appropriately adopted.

The present invention is not limited to a dishwasher having a structure in which the washing tank can be covered from above by a casing lid as shown in the embodiment, but is provided on the front of the washing tank which is opened forward. A door that can be opened and closed freely may be used. The number of the engaged members and the engaging members is not limited to two as in the embodiment, but may be one or three or more. It is not limited to both side surfaces in the width direction but may be end surfaces in the longitudinal direction.

[0025]

As described above, according to the nozzle structure of the dishwasher according to the present invention, the washing liquid chamber and the rinsing liquid chamber are defined in one nozzle in parallel at the same height level. Without wasting space in the height direction,
A large washing space can be secured while maintaining space saving. That is, the height of the dishwasher itself can be reduced. Further, since the configuration is such that the partition member is disposed in the nozzle and only the two chambers are partitioned, the number of parts can be reduced and the cost can be reduced.

Further, since the nozzle is constituted by a detachable main body and a lid, and the lid is removed from the main body, the cleaning liquid chamber and the nozzle liquid chamber which are defined inside can be fully opened.
Cleaning and inspection of both rooms can be performed easily. In addition, the cleaning liquid chamber and the rinsing liquid chamber are arranged in parallel, and there are no vertically overlapping parts or members that hinder cleaning, so that cleaning can be performed easily in a short time. Further, since no tool or the like is required for attaching and detaching the main body and the lid, only the operator's hand is sufficient, and there is no need to search for the tool or lose the attachment means such as screws.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a lower nozzle according to an embodiment of the present invention.

FIG. 2 is a schematic perspective view of the dishwasher according to the embodiment.

FIG. 3 is a side view partially showing the dishwasher according to the embodiment;

FIG. 4 is a longitudinal sectional view of a lower nozzle and a lower nozzle mounting portion according to the embodiment.

FIG. 5 is a longitudinal sectional view showing an arm portion of a lower nozzle according to the embodiment.

FIG. 6 is a cross-sectional view showing a lower nozzle according to the embodiment.

FIG. 7 is an exploded perspective view of a main part of a lower nozzle according to another embodiment regarding the arrangement of the engagement pieces and the claws.

FIG. 8 is a longitudinal sectional view showing an arm portion of a lower nozzle according to another embodiment regarding a relationship between a main body and a lid.

FIG. 9 is a cross-sectional view showing a lower nozzle according to another embodiment regarding a relationship between a cleaning liquid chamber and a rinsing liquid chamber.

FIG. 10 is a schematic perspective view of a main part of a nozzle section according to a conventional technique.

[Explanation of symbols]

13 cleaning tank, 20 lower nozzle, 21 main body, 22 lid,
23 Partition member 24 Cleaning liquid chamber, 25 Rinse liquid chamber, 33 Claw (engaged member) 34 Engagement piece (engagement member), 47 Cleaning jet, 48 Rinsing jet

Claims (2)

[Claims] A dishwasher for washing dishes with a washing liquid and a rinsing liquid sprayed from a nozzle (20) arranged in a washing tank (13), wherein a partition member (2) arranged in the nozzle (20) is provided.
According to 3), the cleaning liquid chamber (24) and the rinsing liquid chamber (25) are defined in parallel at the same height level in the nozzle (20), and the cleaning liquid chamber (24) of the nozzle (20) is formed. At the corresponding position, wash nozzle (4
7) A nozzle structure of a dishwasher, wherein a nozzle (48) for rinsing is provided at a position corresponding to the rinsing liquid chamber (25) of the nozzle (20). 2. The nozzle (20) has a body in which the cleaning liquid chamber (24) and the rinsing liquid chamber (25) are defined and a plane parallel to the extending direction of both chambers (24, 25) is opened. (21) and the main body (21)
And a lid (22) for closing the opening (37a) of the main body.
The dishwasher according to claim 1, wherein the (21) and the lid (22) are detachably constituted by an engaging member (34) provided on one side and an engaged member (33) provided on the other side. Nozzle structure.