JPH1119023A - Dishwasher - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent washing and rinsing irregularities from occurring by providing a rotatable dishwashing basket in a washing tub, arranging a washing nozzle in the side of the washing tub and washing nozzles that can jet washing water to the washing tub at the bottom of the washing tub. SOLUTION: A dishwasher comprises a body case 2 and a door case 4, and a washing nozzle 16 furnished with multiple cleaning water jetting holes 14 (side washing nozzle) provided on the interior wall 8 of the washing tub 12 provided inside is arranged. A common rotating shaft 30 is provided in the centers of the bottoms 26, 28 of dish washing baskets 18, 20 inside the washing tub 12 and supported by the projected portion 32 of the bottom wall 10 of the washing tub 12 on the lower end side, and rotated around the rotating shaft 30 with a motor 36. In addition, an L joint structure washing nozzle 54 (bottom side washing nozzle) is fixed to the lower portion of the bottom wall 10 around a jetting hole 50 opened on the bottom wall 10 of the washing tub 12 and the circular portions 52, 53 of the circumference wall of a water storage tank 38 facing the lower portion of the bottom wall 10.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a dishwasher, such as a dishwasher for washing dishes, a dishwasher for washing and rinsing dishes, and a dishwasher for washing, rinsing and drying dishes. The present invention relates to a dishwasher provided with a rotatable dishwasher basket in a tank.

[0002]

2. Description of the Related Art The structure of a dishwasher as a conventional dishwasher will be described with reference to FIG. The dishwasher includes a main body case 2 and a door case 4 attached to the main body case 2 so as to be openable and closable, and is surrounded by a ceiling wall 6, a back wall 8, a bottom wall 10, and the like. A cleaning tank 12 having an opening on the door case 4 side is provided. A cleaning nozzle 16 having a plurality of cleaning water injection holes 14 is provided on the back wall 8 of the cleaning tank 12. The washing tank 12 has two upper and lower dishwashing baskets 18 and 20 therein. These dishwashing baskets 18 and 20 are provided with side walls 30 and 32 on the periphery of the disc-shaped bottoms 26 and 28 on which a plurality of dishstands 22 are provided.
And the bottoms 26, 28
Each has a common rotation shaft 30 at the center. The rotating shaft 30 is provided at its lower end side with the bottom wall 1 of the washing tank 12.
It is supported by the 0 convex portion 32. Lower dishwashing basket 20
Is connected to a motor 36 via a rotating gear 34. The dishwashing baskets 18 and 20 are driven to rotate about the rotation shaft 30 by the motor 36. A cleaning filter is attached to the bottom wall 10 of the cleaning tank 12. The water tank 3 is located below the washing tank 12.
8 are deployed. The water storage tank 38 is surrounded by a peripheral wall 40 including the bottom wall 10 so that water can be stored therein, and a part of the water storage tank 38 has a structure of a water absorption pipe 42 and is connected to a washing pump 44. The cleaning pump 44 is connected to the side cleaning nozzle 16 via a cleaning water supply pipe 46, and supplies cleaning water to the side cleaning nozzle 16.
The washing water can be sprayed into the washing tank 12 to wash the tableware 48.

[0003] A conventional dishwasher having the above-described configuration has a washing step and a rinsing step. In the washing step, the door case 4 is opened and the tableware 48 is moved to the dishwashing basket 18,
The door case 4 is closed after each of the door cases 20 is arranged. When the washing pump 44 is operated, the washing water from the washing pump 44 is supplied to the dishwashing basket 1 through the injection hole 14 of the washing nozzle 16.
The dishwashing baskets 18 and 20 are rotated by the motor 36 while being sprayed onto the tableware 48 disposed on each of the dishes 8 and 20. Thereby, the tableware 48 is washed. In this case, since the dishwashing baskets 18 and 20 are rotating, the washing water is jetted through the space between the tablewares 48 arranged in the dishwashing baskets 18 and 20 to thereby wash the dishwashing baskets 48.
The dirt attached to is removed. Next, in the rinsing step, dirt and detergent attached to the tableware 48 are removed by spraying cleaning water onto the tableware 48 in the same manner as in the cleaning step.

[0004]

In the conventional dishwasher / dryer, the above-mentioned two steps are performed only by the washing nozzle on the side of the washing tank. Therefore, when the number of dishes arranged in the dishwashing basket increases, the dishwasher is driven by a motor. Even if rotated, the dish water becomes an obstacle and the washing water sprayed from the washing nozzle cannot be sprayed sufficiently on all the dishes, causing uneven washing and rinsing of the dishes, which greatly reduces the efficiency of washing and rinsing. There was a risk of doing it.

[0005]

DISCLOSURE OF THE INVENTION The dishwasher of the present invention comprises:
The washing tank is provided with a rotatable dishwashing basket and a washing nozzle is provided on a side surface of the washing tank, and a washing nozzle capable of jetting washing water into the washing tank is also provided on the bottom side of the washing tank. The dishes in the washing tank are washed with the side washing nozzles, and the side washing nozzles are blind spots that cannot be washed or are insufficiently washed with the washing nozzles on the bottom side. Thus, means for solving the above-mentioned problems, such as uneven washing and rinsing of dishes, is constructed.

[0006] The definition of the cleaning nozzle in the above-mentioned claims is not to be construed narrowly so as to refer only to the cleaning nozzle in the embodiment described later. It can be construed as a broad concept including either a cleaning nozzle with holes or a cleaning nozzle alone.

Further, the definition of washing in the above-mentioned claims is interpreted as a broad concept including washing of dishes alone, both washing and rinsing, and rinsing alone.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a dishwasher according to each embodiment of the present invention will be described in detail with reference to the drawings.
The present invention will be described with reference to a dishwasher as a dishwasher, but the present invention is not limited to this and can be applied to other dishwashers.

Embodiment 1 A dishwasher / dryer according to Embodiment 1 will be described with reference to FIGS. 1 is a diagram illustrating a side configuration of a dishwasher according to Embodiment 1 of the present invention, FIG. 2 is a diagram illustrating a plan configuration of a main part of FIG. 1, and FIG. It is a figure which expands and shows a side surface structure. In these figures, parts corresponding to those in FIG. 8 are denoted by the same reference numerals.

First, a basic configuration of the dishwasher according to the first embodiment which is common to the conventional dishwasher / dryer will be described. The dishwasher of the present embodiment has a main body case 2
And a door case 4 attached to the main body case 2 so as to be openable and closable, and is enclosed by a ceiling wall 6, a side wall 7, a back wall 8 and a bottom wall 10, and the door case 4 side is open. A cleaning tank 12 is provided. A cleaning nozzle 1 having a plurality of cleaning water injection holes 14 is provided on a back wall 8 of the cleaning tank 12.
6 (side cleaning nozzles) are provided. Cleaning tank 12
Has two upper and lower dishwashing baskets 18 and 20 inside. These dishwashing baskets 18 and 20 include a plurality of dishstands 22.
Are provided on the periphery of the disc-shaped bottom portions 26 and 28 on which the side walls 3 are provided.
0, 32 are erected and the bottom 2
A common rotating shaft 30 is provided at the central portion of each of the sixth and the 28th. The rotating shaft 30 is provided at its lower end side with the cleaning tank 12.
Are supported by the convex portions 32 of the bottom wall 10. The side wall 32 of the lower dishwashing basket 20 is connected to a motor 36 via a rotary gear 34.
It is connected to the. The dishwashing baskets 18 and 20 are driven to rotate about the rotation shaft 30 by the motor 36. A cleaning filter is attached to the bottom wall 10 of the cleaning tank 12. A water storage tank 38 is provided below the cleaning tank 12. The water storage tank 38 includes the bottom wall 1.
The water is enclosed by a peripheral wall 40 including a zero, and water can be stored therein. The cleaning pump 44 is provided with the side cleaning nozzle 1.
The cleaning water is supplied to the side cleaning nozzle 16 through the cleaning water supply pipe 46, and the cleaning water is sprayed into the cleaning tank 12 from the injection hole 14 to discharge the tableware 48.
Can be cleaned, and the stored water in the water storage tank 38 can be supplied to the cleaning tank 12 and circulated.

In the dishwasher / dryer according to the first embodiment, the bottom wall 1 of the washing tank 12 is provided in addition to the above-described structure.
The cleaning water injection hole 50 is opened at the bottom of the bottom wall 10 around the injection hole 50 and the annular portions 52 and 53 of the peripheral wall of the water storage tank 38 facing the cleaning water injection hole 50. The cleaning nozzle is fixed at one end side and the center side. The other end of the bottom side cleaning nozzle 54 penetrates the peripheral wall 40 of the water storage tank 38 and is sealed to the peripheral wall 40 of the water storage tank 38 with an O-ring 55 and faces the cleaning pump 44. The other end of the bottom cleaning nozzle 54 is fixed to one end of a cleaning water supply pipe 56 having a discharge hose structure by a fixing band 58, and the other end of the cleaning water supply pipe 56 is connected to the cleaning pump 44. I have it. In the drawings, a and b indicate the directions of spraying the cleaning water from the cleaning nozzles 16 and 54 on the side surface and the bottom surface, respectively.
Indicates the moving direction of the glass cup indicated by reference numeral 48a, and d indicates the flow direction of the washing water in the washing water supply pipes 46 and 56.

The operation will be described.

First, the door case 4 of the dishwasher is opened to dispose the tableware 48 in each of the dishwashing baskets 18 and 20, and a predetermined amount of detergent is supplied from a detergent inlet, and then the door case 4 is closed. Start driving.

Then, the dishwasher enters a washing step. In this cleaning step, cleaning water containing a detergent is pressurized by a cleaning pump 44 to clean the side cleaning nozzle 1.
The cleaning water is injected toward the tableware 48 in the cleaning tank 12 by the cleaning water injection hole 14 of FIG. At this time, since the dishwashing baskets 18 and 20 are rotated by the motor 36, the dishwashing baskets 18 and 20 are rotated through the washing water injection holes 14 of the side washing nozzles 16 so that the tableware 4 can be washed.
The washing water is sprayed on 8 to remove dirt from the tableware 48. At this time, the washing water pressurized by the washing pump 44 from the washing water injection hole 50 of the bottom washing nozzle 52 is washed with respect to the tableware 48 arranged at a position not receiving the washing water jetted from the side washing nozzle 16. It is injected into the tank 12. In this case, since each of the dishwashing baskets 18 and 20 is rotated, each of the tablewares 48 is also sprayed with washing water from the bottom side, so that dirt is reliably removed.

In the rinsing step, the washing water is similarly sprayed from the side surface and the bottom surface of each dish 48 by spraying the washing water, so that the detergent stains on the dish 48 are rinsed off. become. In particular, even with a dish having a deep bottom such as a glass cup (indicated by reference numeral 48a in FIG. 2), the bottom side cleaning nozzle 52 can wash the bottom of the glass cup vertically upward or at an angle close thereto, so that the inner surface of the glass cup becomes cloudy. Since it can be prevented, the finished state of washing and rinsing can be improved.

According to the structure of the bottom washing nozzle 52, the size of the bottom of the washing tank can be reduced by using the L-shaped joint, and the vertical dimension of the appearance of the dishwasher can be reduced. Further, since the other end of the bottom side cleaning nozzle 52 faces the cleaning pump 44 side, the length of the cleaning water supply pipe 56 is shortened to prevent the cleaning water supply pipe 56 from being twisted, which is effective in reducing defective assembly.

In the first embodiment, the number of the cleaning nozzles on the bottom side is one. However, the present invention is not limited to this. For example, a plurality of cleaning water injection holes may be formed on the bottom wall of the cleaning tank. And a bottom-side cleaning nozzle may be provided corresponding to each cleaning water injection hole. In such a case, washing from the bottom side of each tableware arranged in the dishwashing basket can be performed without rotating the dishwashing basket.

In the first embodiment, the direction of spraying the washing water from the bottom side washing nozzle is vertically upward. However, the washing water can be sprayed not vertically upward but with a predetermined inclination. It may have an appropriate angle.

Second Embodiment A dishwasher according to a second embodiment of the present invention will be described with reference to FIGS. FIG. 4 is a view showing a side configuration of the dishwasher according to the second embodiment, and FIG.
The same reference numerals are given to portions corresponding to. FIG. 5 is a diagram showing a front configuration of the cleaning pump in the dishwasher according to the second embodiment. FIG. 6 shows a planar configuration of the cleaning pump in the cleaning mode. FIG. 2 shows a planar configuration.

Although a drain pipe to be connected to the washing pump 44 is not shown in the dishwasher shown in FIG. 1 of the first embodiment, it is shown in FIG. 4 of the second embodiment. The dishwasher is shown with a drain 60 connected to the washing pump 44. Hereinafter, the structure of the cleaning pump 44 according to the second embodiment will be described with reference to FIGS. That is, the cleaning pump 44 according to the second embodiment includes the pump chamber 68 in which the impeller 64 connected to the rotation shaft of the motor 62 and the switching valve 66 are housed. A cleaning water supply port 70 connected to the cleaning water supply pipe 46 for the side cleaning nozzle for supplying cleaning water to the cleaning water supply pipe 46, and a cleaning water supply pipe for the bottom cleaning nozzle are connected to the pump chamber 68. 56 and the washing water supply pipe 5
A cleaning water supply port 72 for supplying cleaning water to 6, a drain port 74 connected to the drain pipe 60 for flowing drain water into the drain pipe 60, and a water tank 38 stored in the pump chamber 68. A water suction port 76 connected to the water storage tank 38 via the water suction pipe 42 to take in water from the water storage tank 38 so as to absorb water and circulate and supply the water to the cleaning tank 12 again as cleaning water.
And Further, the cleaning pump chamber 68 has a communication port 78 communicating with each of the cleaning water supply ports 72 and 74. When the communication port 78 is closed, the cleaning water supply ports 7 and 74 are closed.
2, 74 are closed at the same time. The switching valve 66 is rotated around the fulcrum 66a to close the drain port 74 in the cleaning mode to close the drain port 74, while the communication port 7 is closed in the drain mode.
8 is switched so that the communication port 78 is closed and the two cleaning water supply ports 72 and 74 are simultaneously closed. Therefore, even if the number of cleaning water supply ports 72 and 74 increases, it is only necessary to close the communication port 78 to close them in the drainage mode. Water supply ports 72, 74
Is prevented from flowing into.

Therefore, in the washing pump 44 of the dishwasher according to the second embodiment, in the washing mode, the drain valve 74 is closed by the switching valve 66 as shown in FIG. The water in the water storage tank 38 is absorbed as washing water from the water suction pipe 42 through the water suction port 76 by being rotated in the counterclockwise direction of the arrow A, and the absorbed washing water is moved in the direction indicated by the arrow d. The cleaning water enters the communication port 78, further diverges into arrows d1 and d2, and the diverted cleaning water flows in the direction of arrow d1 from the cleaning water supply port 70 toward the side cleaning nozzle 16 and the diverted cleaning water in the direction of arrow d2 From the water supply port 72 to the bottom side cleaning nozzle 5
Go in two directions. As a result, the amount of washing water circulated and supplied into the washing tank 12 increases, and even if the number of dishes increases, the washing can be sufficiently performed. On the other hand, in the drainage mode, as shown in FIG.
Is closed, and the impeller 64 is
Is rotated clockwise as indicated by the arrow B, so that the water tank 38 is rotated.
The water in the pump chamber 6 is supplied from the water suction pipe 42 through the water suction port 76.
8, water is absorbed as shown by an arrow d3, and the absorbed water is drained from a drain port 74 to a drain pipe 60 as shown by an arrow d4.

By the way, in the conventional dishwasher / dryer, as shown in FIG. 8, the washing pump 44 is connected to one side washing nozzle 16 through one washing water supply pipe 46 at one washing water supply port. Cleaning tank 1
When the number of dishes 48 in the container 2 increases, the washing water is supplied only from the side washing nozzles 16, and thus the washing water is insufficient for washing the dishes 48.
In such a case, in the second embodiment, a plurality of cleaning nozzles 16 and 52 are connected to the cleaning pump 44 via the cleaning water supply ports 70 and 72 in the second embodiment. Therefore, even when the number of dishes 48 in the washing tank 12 increases, sufficient washing water can be circulated and supplied into the washing tank 12, so that the dishes 48 can be sufficiently washed.
Its cleaning performance is improved.

[0023]

As described above, according to the present invention, the following effects can be obtained.

According to the first aspect of the present invention, there is no blind spot where washing water can be sprayed on the dishes in the washing tank by the washing nozzles on the side and bottom sides, and as a result, washing can be performed efficiently and its washing performance can be improved. Is improved.

According to the second aspect of the present invention, since the tip of the cleaning nozzle is formed on the bottom wall of the cleaning tank, even if the cleaning nozzle is provided on the bottom surface separately from the cleaning nozzle on the side surface, the cost is significantly increased. Never do.

According to the third aspect of the present invention, since the other end of the cleaning nozzle on the bottom side is directed to the cleaning pump, the size of the bottom of the cleaning tank can be reduced, and the vertical dimension of the dishwasher can be reduced. In addition, since the other end of the washing nozzle faces the washing pump, when connecting a washing water supply pipe such as a discharge hose to the washing nozzle, the length of the supply pipe is shortened to prevent the torsion of the supply pipe and to assemble it. Is effective in reducing the

According to the fourth aspect of the present invention, the plurality of cleaning water supply ports can be supplied separately to the cleaning nozzle.
The supply ratio to the plurality of cleaning water supply ports can be easily changed, thereby effectively performing spot-like cleaning corresponding to tableware in the cleaning tank, and improving the cleaning ability. Further, since the part corresponding to the branch pipe is integrally formed in the pump chamber, it is advantageous in terms of cost.

According to the fifth aspect of the present invention, since the communication port is closed in the drain mode, a plurality of cleaning water supply ports can be closed at the same time. However, the drainage in the drainage mode can be reliably prevented from flowing into the cleaning water supply port with a simple and inexpensive structure.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating a side configuration of a dishwasher / dryer according to a first embodiment of the present invention.

FIG. 2 is a diagram showing a plan configuration of a main part of FIG. 1;

FIG. 3 is an enlarged view showing a main part of FIG. 1;

FIG. 4 is a diagram showing a side configuration of a dishwasher according to Embodiment 2 of the present invention.

FIG. 5 is a diagram showing a front configuration of a washing pump of the dishwasher of FIG. 4;

FIG. 6 is a diagram showing a plan configuration of the cleaning pump of FIG. 5 in a cleaning mode.

FIG. 7 is a diagram showing a plan configuration of the cleaning pump of FIG. 5 in a drain mode.

FIG. 8 is a diagram showing a side configuration of a conventional dishwasher and dryer.

[Explanation of symbols]

 2 Body Case 4 Door Case 12 Washing Tank 14 Washing Water Injection Hole 16 Side Washing Nozzle 18 Dishwashing Basket 20 Dishwashing Basket 36 Motor 38 Water Storage Tank 50 Washing Water Injection Hole 54 Bottom Side Washing Nozzle 60 Drain Pipe 62 Motor 64 Impeller 66 Switching valve 68 Pump chamber 70 Cleaning water supply port 72 Cleaning water supply port 74 Drainage port 78 Communication port

Claims (5)

[Claims] 1. A dishwasher provided with a dishwashing basket rotatable in a washing tank and a washing nozzle disposed on a side surface of the washing tank, wherein the washing tank is also washed into the washing tank on the bottom side of the washing tank. A dishwasher characterized by having a washing nozzle capable of jetting water. 2. The dishwasher according to claim 1, wherein the washing tank has an injection hole at a bottom wall thereof, which is a tip of a washing nozzle on the bottom side. 3. The cleaning nozzle on the bottom side has one end held at a lower portion of the bottom wall around the injection hole and the other end bent in the direction of the cleaning pump, and is directly or through a straight pipe. The dishwasher according to claim 2, having a structure connected to the washing water supply port. 4. A washing pump for supplying washing water to the washing nozzle, wherein the washing pump is connected to the washing nozzle together with a drain port in the pump chamber and supplies washing water to the washing nozzle. 4. The cleaning nozzle according to claim 1, further comprising a water supply port, wherein in the cleaning mode, the cleaning water in the pump chamber can be divided and supplied to the cleaning nozzle through the plurality of cleaning water supply ports. Dishwasher as described. 5. The pump chamber has a communication port common to each of the plurality of cleaning water supply ports. In the drain mode, the plurality of cleaning water supply ports are simultaneously closed by closing the communication port. The dishwasher according to claim 4, wherein the dishwasher has a closed structure.