JPH11164805A - Dish washer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a dish washer in which washing nozzles can securely be attached in the correct direction. SOLUTION: This dish washer is provided with upper washing nozzles 13A and rinsing nozzles in a washing room, and a washing tank opened below the washing room, and washing water in the washing tank is jetted from the upper washing nozzles 13A to dishes moving in the washing room, and rinsing water is jetted from the rinsing nozzles. Several upper washing nozzles 13A are attached in parallel to as well as communicated with a hollow pipe 21 through which washing water is fed, and each of the upper washing nozzles 13A is provided with an attaching direction regulating member 66 which prevents the nozzle from being attached in the wrong direction because of interference with the hollow pipe 21.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dishwasher for washing and rinsing dishes in a washing room.

[0002]

2. Description of the Related Art Conventionally, this type of rack-transfer-type dishwasher is disclosed, for example, in Japanese Utility Model Publication No. 55-51415 (A47L).
15/42), upper and lower cleaning nozzles are provided in a cleaning area (referred to as a cleaning chamber in the publication) in the cleaning chamber, and upper and lower rinsing nozzles are provided in a rinsing area (referred to as the rinsing chamber in the publication). At the same time, a rack feed mechanism is attached between the upper and lower nozzles to transfer the rack containing the tableware at a constant speed.

A washing tank is provided below the washing chamber and has an opening on the upper surface. In the washing area, washing water in the washing tank is sprayed from the upper and lower washing nozzles onto tableware by a pump. By injecting rinsing water, which is hot water, into tableware, washing and rinsing are performed sequentially and continuously.

The upper cleaning nozzle 13A has a shape as shown in FIG. This upper cleaning nozzle 13A is for a dishwasher that performs cleaning by rotating the nozzle, and a plurality of injection ports 16A formed on the lower surface thereof are formed at asymmetrical positions in the left and right directions. When rotated about the center point O, each injection port 16A
The cleaning water sprayed from .. is formed at a position that spreads over all areas within the rotating circle.

[0005]

In a rack-transfer-type dishwasher, a plurality of such upper washing nozzles 13A are arranged in parallel above a rack rail and fixed to a hollow tube for supplying washing water. However, as described above, since the injection port 16A is formed at an asymmetrical position, unless the same number of the upper washing nozzles 13A with the reversed directions are arranged in parallel, the washing water sprayed on the tableware in the rack is not provided. As a result, there is an area where the cleaning water is not sprayed.

However, since the upper cleaning nozzles 13A can be mounted in either direction, in the worst case, an error has occurred in which all the upper cleaning nozzles 13A are mounted in the same direction.

The present invention has been made in order to solve the above-mentioned conventional technical problem, and it is an object of the present invention to provide a dishwasher in which a washing nozzle can be surely mounted in a proper direction.

[0008]

DISCLOSURE OF THE INVENTION The dishwasher of the present invention comprises:
A washing nozzle and a rinsing nozzle provided in the washing chamber, and a washing tank opened below the washing chamber are provided, and washing is performed by spraying washing water in the washing tank from the washing nozzle to tableware transferred in the washing chamber. Rinsing is performed by spraying rinsing water from a rinsing nozzle, and a plurality of washing nozzles are provided in parallel with the hollow pipe through which the washing water is fed, and each washing nozzle has a medium. A mounting direction regulating member is provided to prohibit mounting in a direction opposite to the normal direction due to interference with the empty tube.

According to the present invention, there is provided a washing nozzle and a rinsing nozzle provided in the washing chamber, and a washing tank which is opened below the washing chamber. In a dishwasher that performs washing by spraying water and performing rinsing by spraying rinsing water from a rinsing nozzle, a plurality of washing nozzles are communicated with a hollow pipe through which the washing water is fed and arranged in parallel with the hollow nozzle. Each washing nozzle is provided with an attachment direction regulating member that prohibits attachment in a direction opposite to the regular direction due to interference with the hollow tube. If it is attempted to mount in the opposite direction, the mounting direction restricting portion interferes with the hollow tube and cannot be mounted.

[0010] This makes it possible to securely mount the washing nozzle in the proper direction, and to effectively eliminate the occurrence of residual stains on tableware due to the unevenness of the washing water. .

[0011]

Next, an embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 is a vertical front view of a dishwasher DW of the present invention, FIG. 2 is another vertical front view of the dishwasher DW, and FIG. 3 is an upper cleaning nozzle 13A attached to a hollow tube 21 of the dishwasher DW. .. N front view, FIG. 4 is a bottom view of the same. The upper cleaning nozzle 13A described later is as shown in FIG.

In each of the figures, reference numeral 1 denotes an exterior body in which the inside is defined as a washing chamber 2 and openings 6 and 7 for the entrance and exit of the rack R are formed opposite to the side walls 3 and 4. A cleaning tank 10 having a rear portion recessed downward and opening to the upper surface is formed, and the rack R is opened and closed before and after a lower portion in the cleaning chamber 2.
A pair of rack rails 12, 12 movably supported from the side to the opening 7 side are attached.

The inside of the cleaning chamber 2 has a cleaning area W1 on one opening 6 side serving as an inlet, and a rinsing area W on the other outlet side serving as an outlet.
A pair of upper and lower cleaning nozzles 13A and 13B are provided above and below the cleaning area W1 to perform the preceding cleaning, and a pair of upper and lower rinsing nozzles 14A are used to perform the final rinsing above and below the rinsing area W2. , 14B are provided. The rack rails 12 and 12 are provided from the washing area W1 to the rinsing area W2, and a curtain C is suspended between the openings 6 and 7 and the areas W1 and W2.

The upper cleaning nozzle 13A and the upper rinsing nozzle 14A are arranged below the top wall 15 of the exterior body 1, and their cleaning ports 16A,. The lower washing nozzle 13B and the lower rinsing nozzle 14B are mounted immediately below the rack rails 12, 12, and their jetting ports 16B,.
From above, the washing water or the rinsing water is sprayed upward.

Numeral 18 sucks and pressurizes the washing water stored in the washing tank 10 and pressurizes the upper and lower washing nozzles 13A,
This is a cleaning pump that feeds 13B through hollow tubes 20 and 21, respectively.

Here, a plurality of upper cleaning nozzles 13A are attached to the upper part of the hollow tube 21 located below the top wall 15. In this case, downwardly opened discharge portions 62... Are formed at four locations on the upper part of the hollow tube 21 across the left and right, and each of the discharge portions 62. 6
3 (which becomes a part of the hollow tube 21) is attached.
The anti-rotation plate 63 is for preventing rotation of the upper cleaning nozzle 13A, and protrudes downward from the left or right side of the discharge unit 62. The discharge unit 62 at the left end and the second discharge unit 62 from the right. , The anti-rotation plate 63 protrudes to the left, and the anti-rotation plate 63 is attached to the right-end discharge part 62 and the second discharge part 62 from the left to protrude to the right.

On the other hand, a regulating member 66 is attached to the center O (FIG. 5) of the upper cleaning nozzle 13A. The restricting member 66 extends from the center O in a direction (downward in FIG. 5) orthogonal to the direction in which the injection ports 16A are arranged, is bent upward at a right angle, and is welded and fixed to a flange portion of the upper cleaning nozzle 13A. I have.

Then, the upper washing nozzle 13A is connected to the hollow tube 21.
5, the inlet (not shown) formed on the back side of the center O in FIG. 5 is directed to the discharge unit 62, and the regulating member 66 is oriented in the direction opposite to the rotation preventing plate 63 (FIG. 6). And detachably attached with a thumbscrew 67. In this state, the inside of the upper cleaning nozzle 13A communicates with the inside of the hollow tube 21.

Further, as shown in FIG. 3, since the rotation preventing plates 63 alternately protrude to different sides of the discharge portion 62, the upper cleaning nozzles 13A are mounted alternately in a different direction from the left (regular type). direction). As a result, the washing water can be evenly sprayed on the rack R passing below as described later.

Here, when the upper cleaning nozzle 13A is to be mounted so that the regulating member 66 is on the same side as the rotation preventing plate 63 as shown in FIG. 7, the regulating member 66 hits (interferes with) the rotation preventing plate 63 and becomes upper. The inlet of the cleaning nozzle 13A cannot be directed to the discharge unit 62. Accordingly, when the cleaning nozzle is mounted on the hollow tube, if the cleaning nozzle is mounted in a direction opposite to the normal direction, the mounting direction regulating portion interferes with the hollow tube and cannot be mounted.

.. Can be securely mounted in the proper direction, and the generation of stains left on tableware due to uneven cleaning water can be effectively eliminated. become.

On the other hand, the washing tank 10 is opened upward below the rear part of the washing chamber 2, and a plurality of fine through holes are formed in this opening to filter relatively large residual vegetables in the washing water. A plurality of tank filters 31 are arranged in a detachable manner. Further, a door 1 is provided on the front of the exterior body 1.
9 are provided.

Incidentally, rinsing water is supplied to the upper and lower rinsing nozzles 14A and 14B from a suitable water supply device (not shown) such as a boiler separately provided outside the exterior body 1 through valves and pipes (not shown). Also, the lower rinsing nozzle 14B
The rinsing water receiver 23 is arranged below the cleaning tank 10 so as to correspond to the upper part of the washing tank 10, and is located on the side of the tank filter 31.

The rinsing water receiver 23 is a rectangular container having an upper surface opening. The rinsing water receiver 23 has a longitudinal direction extending in the front-rear direction of the dishwasher 1, and has a plurality of fine through holes on the bottom surface. The entire top surface is covered with a filter (not shown). Below the rinse water receiver 23, an overflow pipe 43 is drawn into the washing tank 10 from the rear wall. The overflow pipe 43 extends horizontally from the rear wall toward the front. The lower half of the opening of the front end (front end) of the pipe having a cylindrical shape is closed, and the upper half of the opening is cut in a predetermined range toward the rear, and an opening 44 is formed there.

Further, the front end of the overflow pipe 43 is inserted into the filter portion 37 on the lower surface of the rinsing water receiver 23, and the rear end of the overflow pipe 43 communicates with the outside.

Further, another safety overflow pipe 47 is provided upright at a substantially central portion of the washing tank 10 in the left-right direction. The upper end opening of the safety overflow pipe 47 is inserted into the drain handle 48, and in this state, opens upward in the cleaning tank 10 at a position higher than the opening 44 of the overflow pipe 43. The lower end of the overflow pipe 47 communicates with the lower outside of the cleaning tank 10.

Next, 25, 25 are rack feeds suspended and supported by the suspension plates 61... In a reciprocating manner in the left-right direction (the direction of the opening 6-7). And is reciprocated in the left-right direction (in the direction of the opening 6-7) by a crank mechanism 26 or the like driven by a rack feed motor 24. A plurality of rack feed pins 49 are attached to the rack feed 25 so as to be repeatedly operated in an arc around the support shaft 27. And
The rack feed pins 49 are connected to the rack rails 12,
12 are sequentially engaged with the rack R for storing the tableware D placed on the table 12 so that the opening 6 for the entrance to the opening 7 for the exit
The racks R are sequentially moved at a substantially constant speed.

A cleaning switch 51 is mounted above the rack rails 12, 12 in the cleaning area W1, and a rinse switch 52 is mounted in the rinsing area W2. Further, reference numeral 53 denotes a liquid level switch provided in the cleaning tank 10, and reference numeral 54 denotes an auxiliary heater for heating the cleaning tank 10. Also, 56
Is an electrical box provided on the front side of the washing tank 10,
An operation switch 57 for turning on and off the operation of the dishwasher DW, a switch 58 of the auxiliary heater 54, and the like are provided on the front surface thereof. And 59 is the exterior body 1
Is a switch box provided on the upper surface.

With the above arrangement, when washing the dishes D, they are stored in the rack R and then inserted into the washing chamber 2 of the exterior body 1 through the opening 6 on the entrance side. Then, when the operation switch 57 is turned on, the rack feed motor 24 is driven, and the rack R is thereafter moved to the rack feed 25 as described above.
Is moved from the opening 6 side to the opening 7 side at a constant speed. When the rack R reaches the cleaning switch 51 in the cleaning area W1, it is closed and the cleaning pump 18 is closed.
Is started.

Thus, the upper and lower cleaning nozzles 13A, 1
The washing water in the washing tank 10 is sprayed onto the tableware D from the injection openings 16A, 16B,..., 16B,. The cleaning water used for cleaning finally flows into the cleaning tank 10 through the tank filters 31... And is again sucked by the cleaning pump 18.

When the rack R is further transported by the rack feeder 25 and reaches the rinse switch 52 in the rinse area W2, it is closed and the valve is opened, whereby the injection ports of the upper and lower rinse nozzles 14A and 14B are opened. 17
From A .., 17B .., rinsing water composed of warm water is sprayed on the dishes D, and the detergent is rinsed while being moved.

The rinsing water used for rinsing flows into the rinsing water receiver 23 and about half flows into the washing tank 10 through the through holes 34.
Opening 4 of overflow pipe 43 directly from drain port of
4 and is discharged outside.

Then, the rack R is finally sent out of the exterior body 1 through the opening 7 on the exit side. Such washing and rinsing are continuously performed on a plurality of racks R inserted at predetermined intervals. However, since about half of the rinsing water flows into the washing tank 10 as described above, the washing is performed. The water level rises. Then, when the height rises from the height of the opening 44 of the overflow pipe 43, the flow goes through the filter 37 of the rinse water receiver 23 and the overflow pipe 43
Into the overflow pipe 43 through the opening 44 of
It will be discharged outside.

[0034]

As described above in detail, according to the present invention, a washing nozzle and a rinsing nozzle provided in a washing chamber, and a washing tank which is opened below the washing chamber, are provided for washing tableware transferred in the washing chamber. In a dishwasher in which washing is performed by injecting washing water in a washing tank from a nozzle and rinsing water is ejected from the rinsing nozzle, the washing nozzle is communicated with a hollow pipe to which the washing water is supplied. A plurality of cleaning nozzles are provided side by side, and each cleaning nozzle is provided with a mounting direction regulating member that prohibits mounting in a direction opposite to the normal direction due to interference with the hollow tube. At the time of installation, if an attempt is made to mount in a direction opposite to the normal direction, the mounting direction regulating portion interferes with the hollow tube and cannot be mounted.

Thus, the washing nozzle can be securely attached in the proper direction, and the generation of the remaining stains on the dishes due to the unevenness of the washing water can be effectively eliminated. .

[Brief description of the drawings]

FIG. 1 is a vertical sectional front view of a dishwasher according to the present invention.

FIG. 2 is another vertical sectional front view of the dishwasher of the present invention.

FIG. 3 is a front view of a hollow tube and an upper washing nozzle of the dishwasher of the present invention.

FIG. 4 is a bottom view of a hollow tube and an upper washing nozzle of the dishwasher of the present invention.

FIG. 5 is a bottom view of the upper washing nozzle of the dishwasher of the present invention.

FIG. 6 is an enlarged side view of a hollow tube and an upper washing nozzle of the dishwasher of the present invention.

FIG. 7 is an enlarged side view when an upper cleaning nozzle is erroneously attached to a hollow tube of the dishwasher of the present invention.

[Explanation of symbols]

 DW Dishwasher D Dishware W1 Washing area W2 Rinse area R Rack 1 Outer body 2 Washing room 10 Washing tank 12 Rack rail 13A Upper washing nozzle 16A Injection port 18 Washing pump 21 Hollow tube 24 Rack feed motor 25 Rack feed 26 Crank Mechanism 49 Rack feed pin 62 Discharge part 63 Rotation prevention plate 66 Restriction member 67 Thumb screw

Claims (1)

[Claims] 1. A cleaning nozzle and a rinsing nozzle provided in a cleaning chamber, and a cleaning tank opened below the cleaning chamber, and washing of the tableware transferred from the cleaning nozzle to the dishes in the cleaning chamber. In a dishwasher that performs washing by spraying water and performing rinsing by spraying rinsing water from the rinsing nozzle, the washing nozzle communicates with a hollow pipe through which the washing water is fed and a plurality of washing nozzles are arranged in parallel with the hollow pipe. At the same time, each washing nozzle has
A dishwasher, comprising: a mounting direction regulating member that prohibits mounting in a direction opposite to a normal direction due to interference with the hollow tube.