JPH0321725Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a washing water injection device for a dishwasher.

(Prior Art) Conventionally, in a single-tank box type dishwasher, as shown in FIG. A rotary type cleaning arm 52 is installed so that the cleaning arm 52 is rotated by the reaction when the cleaning water is squirted diagonally from the spray nozzle 52a, or a large type using a belt conveyor. , as shown in FIG. 4B, the tableware D or rack 51 is placed on a belt 53 and moves, and washing water is sprayed from a spray nozzle of a fixed washing arm 54.

However, many of the dishes D have convex portions D' for partitions, as shown in Figure C, and the conventional method described above removes dirt from the areas shaded by these convex portions D'. The drawback was that it did not fall well.

(Purpose of the invention) This invention was proposed in view of the above drawbacks.
The purpose of this is to install a main washing pipe and a rinsing pipe inside the main body of the washing machine, and to spray main washing water and rinsing water onto the dishes while shaking them. To provide a washing water injection device for a dishwasher, which sprays washing water over a wide angle and dramatically improves the washing effect.

(Structure of the invention) The invention will be explained below with reference to the drawings. Figures 1 and 2 show a dishwasher to which the present invention is applied. A cylindrical case 1 with a bottom and a handle 2
A rotary door 2 equipped with a door 2 and a control box 3 equipped with operating switches and the like are provided, and frames 4a and 4b are vertically installed at both left and right lower ends of the housing 1, respectively. Further, a connection hose 5 and a drain pipe 6 that communicate with the inside of the case 1 are attached to the lower end of the case 1. It is connected to the discharge port of the submersible pump 7 for cleaning. Note that 7a indicates a strainer.

Furthermore, a solenoid valve 8 is attached to one end surface of the housing 1 to which the control box 3 is attached.
A pipe 9 made of a hose or metal pipe is connected to the pipe line opened and closed by the solenoid valve 8, and the other end of the pipe 9 is connected to an instantaneous water heater or boiler that supplies rinsing water. Hot water source 10
It is connected to the. Note that if this water heater has no pressurizing force, a pump 11 or the like may be appropriately disposed in the middle of the piping 9.

Next, B is an existing sink in the kitchen, and the main wash water W made of hot water containing detergent is stored in the water tank 12, and the overflow 13 is placed so as to face the sides and bottom of the water tank 12. and a deodorizing drainage trap 14 are provided in communication with each other. Here, a drain port 14a at the lower end of the deodorizing drain trap 14 is connected to a drainage pipe (not shown). As shown in FIGS. 1 and 2, a rack 15 for arranging tableware D such as plates is built into the housing 1 and is fixed therein.

A cleaning water injection device according to the present invention having a structure as described below is disposed inside the casing 1. That is, in FIG. 3, the connection hose 5
A connecting pipe 16 connected to the housing 1 extends to the vicinity of the center of one side inside the housing 1, and is connected to a pedestal 17 having a substantially bottomed cylindrical shape. A hollow catch seat 18 is rotatably attached to the end of the pedestal 17 via a waterproof ring 27, and a pipe-shaped main washing arm 19 having an approximately L-shape is attached to the lower end of the catch seat 18.
One end of is fixed. This main washing arm 1
The horizontal portion of the housing 9 extends along the lower surface of the housing 1 toward the other side surface of the housing 1, and a plurality of openings 19a are provided on the outer peripheral surface at approximately equal intervals.

Further, 20 is an opening 19a of the main cleaning arm 19.
The main washing pipe is provided concentrically with the main washing arm 19 so as to cover the area where the main washing arm 19 is provided.

Here, the characteristic feature of the present invention is that it has a spray nozzle that sprays main wash water supplied via a pump toward the dishes in the dishwasher main body, and that is oscillated by the pressure of the main wash water. a rotatable main wash pipe and a spray nozzle for spraying rinse water supplied from a hot water source towards the tableware;
and a rinsing pipe that can be swung and rotated by the pressure of the main washing water, wherein the main washing pipe and the rinsing pipe are placed at swing limit positions on the casing. The main washing pipe and the rinsing pipe each have a contact member provided thereon, and a contact protrusion provided on the main washing pipe and the rinsing pipe. In addition to being rotated in angle, the spray angles of the spray nozzles of the main cleaning pipe and the rinse cleaning pipe also change during reciprocating swinging. That is, the main washing pipe 20 has a main washing arm 19 on the outer peripheral surface of the cylindrical tube portion 20a.
Injection nozzles 20b are protruded at positions approximately 90 degrees apart from the openings 19a, and these injection nozzles 20b have a structure in which their injection ports widen upward. Further, caps 21a and 21b are integrally fixed to both ends of the main cleaning pipe 20 by respective fixing pins 22.

These caps 21a and 21b are loosely fitted into the main washing arm 19, and one cap 21a has an arcuate guide groove 21c formed therein as shown in FIG. 4A. The tip of a guide pin 23a fixed to a ring 23 fixed to the main washing arm 19 is engaged. In other words, the main wash pipe 20 is connected to the cap 2.
1a and 21b, it can rotate about the main cleaning arm 19 by an amount corresponding to the circumferential length of the guide groove 21c. Furthermore, the main cleaning pipe 20
The cap 21b at the other end has an abutment protrusion 21d projecting from its lower end, as shown in FIG. 4B. The other end of the main cleaning arm 19 is pivotally supported by a boss 26 via a cap 24 and a swing arm 25.

Next, a central conduit 28 that communicates with the conduit and piping 9 opened and closed by the solenoid valve 8 is connected to the pedestal 17.
The attachment/detachment screw 31 passes through the interior of the catch 18 and also passes through the hollow rotatable sub-seat 30 attached to the catch 18 via the thrust washer 29.
It is tightened by. Apertures 28a are provided on all sides of the central conduit 28 located within the sub-receiving seat 30, and a pipe-shaped rinsing arm 32 attached to the lower end of the sub-receiving seat 30 and the piping 9 are connected to each other. It communicates.

This rinse washing arm 32 is the main washing arm 19.
Similarly, it extends horizontally inside the housing 1, and the cap 3
3 and a swing arm 34, and is swingably supported by the boss 26, and has a plurality of openings 32a in the horizontal portion. And, almost similar to the main cleaning pipe 20, a plurality of injection nozzles 35 are provided.
A rinse pipe 35 consisting of a cylindrical portion 35a with a cap 36a, 36b, a retaining pin 37,
The rinsing pipe 35, which is attached together with the ring 38 and the guide pin 38a, is also connected to the cap 2.
The cap 36a is configured to be rotatable around the rinsing arm 32 by a circumferential length corresponding to the guide groove 36c of the cap 36a. In addition, in FIG. 3, 36d indicates an abutting protrusion, 39 a retaining ring, and 40 a retaining pin.

Further, as shown in FIGS. 3 and 4, the housing 1 includes abutting pieces 41a and 41b that abut the abutting protrusions 21d and 36d of the swinging main washing pipe 20 and the rinsing pipe 35. A contact member 41 having a generally U-shaped side surface is fixed at the swing limit position of each cleaning pipe 20, 35, respectively.

Next, the usage and operation of the present invention will be explained. First, as shown in Figures 1 and 2, the washer body A is bolted to both sides of the upper part of the sink B via the frames 4a and 4b, and the washer body A is installed above the water tank 12 of the sink B. , fixed. Thereafter, a stopper is attached to the upper part of the deodorizing drainage trap 14, and the interior of the water tank 12 is filled with main washing water W. At this time, the lower end of the submersible pump 7 and the drain pipe 6 is
It is necessary to submerge it in water.

Then, the tableware D to be washed is placed in the rack 15, the door 2 is closed, and washing is started. Here, one cleaning cycle is set to be one minute, for example, and the first 50 seconds are set as the main cleaning period, and the submersible pump 7 is driven by operating the switch provided in the control box 3 to supply the main cleaning water. W is sucked up through the strainer 7a and the connecting hose 5.
Here, the strainer 7a sucks in the main wash water W, but is designed not to suck in large residues.

This main washing water W is supplied to the connecting pipe 1 in Fig. 3.
6, pedestal 17, catch 18 and main cleaning arm 19
The main cleaning pipe 20 is filled through the opening 19a, and the upper rack 15 is filled from the injection nozzle 20b.
It is sprayed for 50 seconds towards tableware D inside. On this occasion,
If the main washing pipe 20 and therefore the injection nozzle 20b are slightly tilted about the main washing arm 19, the reaction force of the main washing water W ejected from the injection nozzle 20b will cause the main washing pipe 20 to move to the left and right in FIG. swing in either direction. For example, if the main cleaning pipe 20 swings to the left as shown in FIG.
Eventually, the abutting protrusion 21d contacts the abutting piece 4 of the abutting member 41.
1a, the main cleaning pipe 20 rotates slightly due to inertia as shown by the imaginary line. Therefore, the direction of the injection nozzle 20b changes, and the main cleaning pipe 20 swings in the opposite direction.

By repeating the above-mentioned operation, the main washing pipe 20 swings while spouting the main washing water W below the dishes D, and thereby the dishes D in the rack 15 are uniformly cleaned from various angles. It is mainly washed. Further, the main wash water W after washing returns to the water tank 12 through the drain pipe 6 and is circulated.

Thereafter, the electromagnetic valve 8 is opened, and hot water as rinsing water is supplied from the hot water source 10 into the rinsing arm 32 through the piping 9, the central duct 28, and the opening 28a. This hot water passes through the opening 32a, fills the rinsing pipe 35, and enters the injection nozzle 35b.
It is sprayed for 10 seconds towards tableware D. During this time as well, the rinse pipe 35 swings and spouts rinse water in the same way as the main wash pipe 20, so
Tableware D is to be thoroughly rinsed and washed from a wide angle. In addition, the rinse water after cleaning is drained from drain pipe 6.
The hot water is collected into the water tank 12 through the process, and drained from the overflow 13 by the amount of hot water.

Here, the injection nozzles 20b and 35b have a tapered shape with their injection ports widened toward the tips, so that the main washing water W or the rinse washing water can be sprayed over a wide range, making it even more effective. It is possible to wash tableware D.

Although the main wash water W in the water tank 12 is gradually diluted by the inflow of the rinse water, the concentration of the main wash water W can be kept almost constant by replenishing detergent as needed.

After washing the dishes D, the main washing water W is drained from the drain port 14a by removing the stopper, and the residue is collected in a strainer (not shown) in the deodorizing drain trap 14.

(Effects of the invention) As described above, according to the invention, the main washing water is provided with a spray nozzle that sprays the main washing water supplied via the pump toward the dishes in the dishwasher main body, and a main washing pipe that is swingable and rotatable under pressure, and a spray nozzle that sprays rinse water supplied from a hot water source toward the dishes, and that is swingable and rotatable under pressure of the main wash water; In a washing water injection device for a dishwasher, which is equipped with a rinsing pipe and a rinsing pipe, the main washing pipe and the rinsing pipe have a contact member provided at a swing limit position of the main washing pipe and the rinsing pipe on the casing; The cleaning pipe has an abutment projection provided on the cleaning pipe, and the main cleaning pipe and the rinse cleaning pipe are rotated by a predetermined angle by the action of the abutment projection coming into contact with the abutment member, and the main cleaning pipe is rotated by a predetermined angle during reciprocating swinging. By changing the spray angle of the spray nozzle of each pipe and rinse pipe, the main stream purified water and rinse water can be sprayed onto the dishes from various angles compared to conventional washing arms that rotate or are fixed. This has the effect of reliably removing dirt hidden behind the convex portions of tableware (see Figure 5, c). In particular, while the main washing pipe and the rinsing pipe are oscillating, the spray nozzle can be configured to face approximately the center of the housing, so that the main washing water, etc. is always sprayed onto the dishes. , more effective cleaning can be performed.

In addition, since the structure is such that the main washing pipe and the rinsing washing pipe automatically swing and spraying the main washing water and the rinsing washing water from the injection nozzle without using any electric drive device such as a motor,
It has the advantage of being simple and economical and dramatically increasing the efficiency of washing dishes.

[Brief explanation of drawings]

The figures show one embodiment of the present invention, in which Fig. 1 is a front view of a dishwasher using the present invention, Fig. 2 is a side view of the same, Fig. 3 is an enlarged front view of the invention, and Fig. 4 is a front view of a dishwasher using the present invention.
Figures A, B, and C are F-F and C- in Figure 3, respectively.
5A and 5B are explanatory views of a conventional example, and FIG. 5C is an explanatory view of tableware. A... washing machine body, D... tableware, 7... submersible pump, 10... hot water source, 20... main cleaning pipe,
20b...Injection nozzle, 35...Rinse cleaning pipe, 35b...Injection nozzle.

Claims (1)

[Claims for Utility Model Registration] The dishwasher has a spray nozzle that sprays main wash water supplied via a pump toward dishes in the dishwasher main body, and is swingable and rotatable by the pressure of the main wash water. and a rinse pipe that has a spray nozzle that sprays rinse water supplied from a hot water source toward the tableware, and that is swingable and rotatable by the pressure of the main wash water. In the washing water injection device for a dishwasher equipped with the above-mentioned, The main washing pipe and the rinsing pipe have abutting protrusions, and the main washing pipe and the rinsing pipe are rotated by a predetermined angle by the action of the abutting protrusion contacting the abutting member, and the main washing pipe and the rinsing pipe are rotated by a predetermined angle during reciprocating swinging. A washing water injection device for a dishwasher, characterized in that the injection angle of the injection nozzle changes.