JP2861790B2 - 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 for washing dishes by spraying washing water.

[0002]

2. Description of the Related Art FIG.
A description will be given with reference to FIG.

[0003] The tableware is stored in a tableware basket 42, and a detergent is added to start operation. When the operation is started, first, a water supply step of supplying a predetermined amount of cleaning water to the cleaning tank 41 is performed. Subsequently, a main washing step is performed in which washing water pressurized by the washing pump 43 and heated by the heater 44 is jetted from the washing nozzle 45 together with the detergent. The cleaning water is injected vertically or obliquely upward from the injection hole 46 of the cleaning nozzle 45, and the cleaning nozzle 45 is rotated substantially horizontally by the injection reaction force. Therefore, most of the cleaning water is sprayed inclining in a direction opposite to the rotation direction of the cleaning nozzle 45,
Collide with tableware. The dishes are washed by the action of the collision force of the washing water, detergent, heat and the like. After the main washing process for a predetermined time, the process enters a drainage process of discharging washing water containing dirt washed from tableware and the like to the outside of the machine. Subsequently, a water supply step of newly supplying washing water, a rinsing step of spraying washing water from the washing nozzle 45 to rinse dishes dirty with detergent or garbage (the stains attached to the dish are also called garbage), The draining step is repeated four times in succession, and the washing step is completed.

[0004] 47 is a cleaning pump 43 and a heater 44
It is a control device for controlling the operation such as.

[0005]

In the dishwasher having the above-mentioned structure, the trajectory 48 of the washing water sprayed from the washing nozzle 45 is constant as shown in FIG. That is, the washing water is repeatedly jetted only to the tableware set at a specific position. That is, the tableware storage area (hereinafter, referred to as a “washing area”) constituted by a dish basket includes a high-washing area where the washing water directly collides with the dishes and a low-washing area where the washing water indirectly collides with the dishes. Exists.

Therefore, in order to obtain a predetermined cleaning power over the entire cleaning area, it is necessary to increase the cleaning power in the cleaning area having a low cleaning effect, and it is necessary to ensure a sufficient secondary water flow. In other words, the injection pressure and flow rate from the injection hole 46 must be increased. Hereinafter, the energy calculated from the injection pressure and the flow rate of the washing water is referred to as washing water power. For the above reasons, in the case of the conventional configuration, the required cleaning water power of the cleaning nozzle 45 is excessive.

[0007] Considering the collision sound when washing water collides with tableware, the higher the injection pressure and the flow rate, the higher the collision sound. Actually, since the injection holes 46 of the washing nozzle 45 are arranged close to each other, one tableware is subjected to the collision of the washing water from the plurality of injection holes 46 at the same time.
For this reason, the noise generated by the collision of the cleaning water has a high peak and is periodically generated with the rotation of the cleaning nozzle 47. The washing noise during the operation is loud to the user in terms of level and sense.

In addition to this, when the flow rate is set to be large, the noise of the washing water impinging on the washing tank 41 or the dripping noise thereof increases, and the washing noise further increases.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems of the conventional structure, and has an object to provide a dishwasher in which the peak value of washing noise generated when washing water collides with tableware is reduced. Is the primary purpose.

A second and third object of the present invention is to provide a dishwasher in which washing noise generated when washing water is dropped into the washing tank is reduced and the strength of the washing nozzle is improved. It is.

[0011]

The first object of the present invention for achieving the first object is to provide a washing tank, a tableware for storing dishes, a washing pump for pressurizing the washing water, and a washing water. Washing nozzle having a plurality of injection holes for injecting,
The washing nozzle is a dishwasher having a shape curved or bent in a direction delayed with respect to the rotation direction during operation.

A second means of the present invention for achieving the second object is to provide a washing tank, a tableware for storing tableware, a washing pump for pressurizing washing water, and a plurality of washing pumps for spraying washing water. A cleaning nozzle having an injection hole, wherein the cleaning nozzle is curved or bent in a direction delayed with respect to the rotation direction during operation, and two ends of the cleaning nozzle are connected to both ends or intermediate portions of the cleaning nozzle. It is a dishwasher provided with a connecting body to be used.

A third means of the present invention for attaining the third object is to provide a washing tank, a tableware for storing tableware,
A cleaning pump for pressurizing the cleaning water, and a cleaning nozzle having a plurality of injection holes for injecting the cleaning water, wherein the cleaning nozzle is curved or bent in a direction delayed with respect to the rotation direction during operation, In addition, the present invention provides a dishwasher provided with a connector provided with a damping material for connecting the two ends of the washing nozzle to both ends or intermediate portions of the washing nozzle.

[0014]

According to the first means of the present invention, a cleaning nozzle having a curved or bent shape in a direction delayed with respect to the rotation direction during operation ejects cleaning water having a temporal phase difference from an injection hole. It acts to do. In other words, the washing water received by the dishes comes from one washing nozzle, and the periodic peak sound can be greatly reduced.

According to a second aspect of the present invention, the connecting member provided on the cleaning nozzle acts as a flat surface portion for receiving the cleaning water falling into the cleaning tank, and reduces noise generated when the cleaning water falls into the cleaning tank. Things. Further, the connection body acts to increase the mechanical strength of the cleaning nozzle, particularly the strength against torsion.

The third means of the present invention is that the connecting member provided with the damping material acts so as to absorb the vibration caused by the collision of a large amount of washing water falling from the vicinity of the top surface of the washing tank, thereby reducing noise. This suppresses the occurrence of. In addition, it is possible to correct the imbalance caused by the difference in the shape and configuration of the cleaning nozzle between the left and right by changing the weight distribution of the damping material. Water leakage from the sliding part and uneven wear resulting from the above can be suppressed.

[0017]

【Example】

(Embodiment 1) An embodiment of the first means of the present invention will be described below. FIG. 1 shows the overall configuration of the present embodiment. Reference numeral 1 denotes a washing tank, and 2 denotes a dish basket which accommodates dishes and is disposed in the washing tank 1, and is washed by receiving a jet of washing water pressurized and heated by a washing pump 3 and a heater 4. 5
Is a control device, which controls a series of operations of a dishwasher for water supply, washing, rinsing, draining, and drying. Reference numeral 6 denotes a washing nozzle arranged in the lower space of the tableware basket 2.
Are provided with injection holes 7a, 7b, and 7c for injecting cleaning water toward. The cleaning nozzle 2 is rotated substantially horizontally by the reaction force of the cleaning water injected from the injection holes 7a, 7b, 7c, and has a shape as shown in FIG. 2 in this embodiment. That is, it is curved or bent in a direction delayed with respect to the rotation direction. Reference numeral 8 denotes a nozzle bearing that supports the cleaning nozzle 6.

The operation of the embodiment will be described below. When the tableware is stored in the tableware basket 2 and mounted on a predetermined position of the cleaning tank 1 to start the operation, a water supply step of supplying a predetermined amount of cleaning water to the cleaning tank 1 is executed. Subsequently, the cleaning pump 3 pressurizes the cleaning water, and the injection holes 7a, 7b, 7c of the cleaning nozzle 6
And pressurized washing water and detergent are sprayed. That is, the main washing step is performed. When the main washing process for a predetermined time is completed,
Next, a drainage step of discharging washing water containing dirt washed off from tableware or the like to the outside of the machine is executed. Subsequent to this draining step, a water supply step of supplying new washing water, a main washing step, a rinsing step, and a draining step are successively performed, and these steps are repeated four times to complete the washing step. As described above, the basic operation of the washing step is the same as that of the conventional dishwasher.

Here, as shown in FIG. 2, the cleaning nozzle 6 of this embodiment has a shape curved or bent in a direction delayed with respect to the rotation direction. Therefore, the injection holes 7b and 7c provided on the cleaning nozzle 6 are arranged with delay angles A and B with respect to the injection holes 7a. Because of the configuration having the delay angles A and B, the washing water from the injection holes 7a, 7b, and 7c is not simultaneously injected into the tableware in the tableware basket 2. . That is, the washing water is sprayed onto the tableware sequentially from the spray hole.

For this reason, according to the present embodiment, the cleaning noise generated when the cleaning water collides with the tableware is of a low level which is substantially reduced from the conventional periodic peak sound. Of course, in this case, by setting the injection amount of the cleaning water to be the same as the conventional one, the deterioration of the cleaning performance does not occur.

(Embodiment 2) Next, an embodiment of the second means of the present invention will be described with reference to FIG. The overall configuration of this embodiment is the same as the configuration in FIG. Reference numeral 26 denotes a washing nozzle arranged in the lower space of the tableware basket 22, and an injection hole 2 for injecting washing water toward the tableware basket 22.
7a, 27b, and 27c. Cleaning nozzle 2
6 has a shape curved or bent in a direction delayed with respect to the rotation direction, similarly to the first embodiment. In this embodiment, as shown in FIG. 3, the cleaning nozzle 26 is integrally formed with a connector 29 for connecting the two ends of the cleaning nozzle 26 to each other. The surface of the connection body 29 is flat. In addition, even if the connecting body 29 connects both ends of the cleaning nozzle 26 with a large surface area as shown in FIG. 4, it connects two places in the middle of the cleaning nozzle 26 as shown in FIG. 5. The connection may be made in a form having a small surface area for connection.

The operation of the embodiment will be described below. Note that the basic operation of the cleaning process is the same as that of the first embodiment, and thus the description is omitted.

While the washing step and the rinsing step are being performed, the washing water injected from the injection holes 27a, 27b, and 27c hits the dishes and then drops into the washing tank 1. The washing water dropped into the washing tank 1 generates a dripping sound. At this time, in the present embodiment, the cleaning nozzle 26 includes the connecting body 29. The connecting body 29 functions as a buffer for receiving a part of the washing water injected into the tableware. That is, the cleaning water is dropped on the connection body 29 and then dropped on the cleaning tank 21. Therefore, the cleaning tank 1
The dripping noise or the collision noise caused by the washing water dripping on the substrate is greatly reduced by the connecting body 29 acting as the buffer.

Further, as shown in FIG. 3, FIG. 5, or FIG. 4, the connecting body 21 has a substantially inverted S-shape. For this reason, it also functions as a reinforcing material particularly for the torsion direction of the cleaning nozzle 26, and can improve the reliability of the cleaning nozzle 26 such as pressure resistance and heat resistance.

(Embodiment 3) An embodiment of the third means of the present invention will be described below with reference to FIG. Also in this embodiment, the overall configuration is the same as that of FIG. 1 and the description is omitted. Reference numeral 36 denotes a cleaning nozzle having an injection hole 37, which is curved or bent in a direction delayed with respect to the rotation direction, similarly to the above-described embodiments. Further, similarly to the second embodiment, a connection body 39 is integrally formed on the outer periphery. In the present embodiment, a vibration damping material 40 constituted by, for example, attaching plastic to iron is tightly fixed after the molding. Here, in the present embodiment, the vibration damping material 40 having a vibration damping effect is tightly fixed to the connecting body 39, but the same noise reduction effect can be obtained even when the cleaning nozzle itself is made of a material having a vibration damping effect. It is thought that it is possible.

The operation of this embodiment will be described below. Note that the basic operation of the cleaning step is the same as that of the first embodiment, and a description thereof will be omitted. In the present embodiment, the vibration damping material 40 is provided on the connecting body 39. Therefore, in addition to soundproofing dripping noise caused by the drop of a small amount of washing water, even if a large amount of washing water falls from near the top surface of the washing tank 1 and collides with the washing nozzle 36, vibration caused by the collision is sufficiently reduced. It can absorb and suppress the generation of noise.

Further, it is easy to correct the imbalance of the weight which is inevitably generated when the shape and the configuration of the cleaning nozzle are different between the left and right by changing the weight distribution of the vibration damping material. It is possible to easily suppress uneven wear of the sliding portion due to unbalance.

[0028]

The first means of the present invention is a washing tank, a tableware for accommodating dishes, a washing pump for pressurizing washing water, and a washing nozzle having a plurality of injection holes for ejecting washing water. A dishwasher having a configuration in which the washing nozzle is curved or bent in a direction delayed with respect to the rotation direction during operation, and reduces a peak value of washing noise generated when washing water collides with dishware. Can be provided.

The second means of the present invention comprises a washing tank, a tableware for storing the dishes, a washing pump for pressurizing the washing water,
A washing nozzle having a plurality of injection holes for injecting washing water, wherein the washing nozzle has a curved or bent shape in a direction delayed with respect to the rotation direction during operation, and the washing nozzle has both ends of the washing nozzle. Or, as a configuration provided with a connecting body connecting two places in the middle, it is possible to provide a dishwasher in which washing noise is reduced when washing water is dropped into the washing tank, and the strength of the washing nozzle is improved. is there.

The third means of the present invention comprises a washing tank, a tableware for storing dishes, a washing pump for pressurizing washing water,
A washing nozzle having a plurality of injection holes for injecting washing water, wherein the washing nozzle has a curved or bent shape in a direction delayed with respect to the rotation direction during operation, and the washing nozzle has both ends of the washing nozzle. Or as a structure provided with a connecting body provided with a vibration damping material connecting two places in the middle, the dripping noise generated when the washing water is dripped into the washing tank is further reduced than by the second means of the present invention. In addition, it is possible to provide a dishwasher in which the strength of the washing nozzle is improved.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a schematic configuration of a dishwasher according to an embodiment of a first means of the present invention.

FIG. 2 is a plan view showing the cleaning nozzle.

FIG. 3 is a plan view showing a washing nozzle of a dishwasher according to an embodiment of the second means of the present invention.

FIG. 4 is a plan view showing a second embodiment of the cleaning nozzle.

FIG. 5 is a plan view showing a third embodiment of the cleaning nozzle.

FIG. 6 is a sectional view showing a main part of a washing nozzle of a dishwasher according to an embodiment of the third means of the present invention.

FIG. 7 is a sectional view showing a conventional dishwasher.

FIG. 8 is an explanatory view showing a washing nozzle of the dishwasher.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cleaning tank 2 Tableware basket 3 Cleaning pump 6 Cleaning nozzle 7a, 7b, 7c Injection hole 29 Connected body

Continuation of the front page (56) References Special Table Hei 7-502183 (JP, A) Japanese Unexamined Patent Publication No. Hei 5-344945 (JP, A) Japanese Unexamined Patent Publication No. Hei 7-31575 (JP, A) Japanese Utility Model Laid-open Hei 3-103067 (JP, A) , U) Japanese Utility Model sho 59-160069 (JP, U) Japanese Utility Model HI 1-91463 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) A47L 15/42

Claims (3)

(57) [Claims] 1. A washing tank, a tableware for storing tableware,
A cleaning pump for pressurizing the cleaning water, and a cleaning nozzle having a plurality of injection holes for injecting the cleaning water, wherein the cleaning nozzle is curved or bent in a direction delayed with respect to the rotation direction during operation. Dishwasher. 2. A washing tank, a tableware for storing tableware,
A cleaning pump for pressurizing the cleaning water, and a cleaning nozzle having a plurality of injection holes for injecting the cleaning water, wherein the cleaning nozzle is curved or bent in a direction delayed with respect to the rotation direction during operation, In addition, a dishwasher provided with a connector for connecting the cleaning nozzle to two locations at both ends or at an intermediate portion of the cleaning nozzle. 3. A washing tank, a tableware for storing tableware,
A cleaning pump for pressurizing the cleaning water, and a cleaning nozzle having a plurality of injection holes for injecting the cleaning water, wherein the cleaning nozzle is curved or bent in a direction delayed with respect to the rotation direction during operation, And a dishwasher provided with a connecting member provided with a vibration damping material for connecting the two ends of the washing nozzle to both ends or an intermediate portion of the washing nozzle.