JP2010263941A - Dishwasher - Google Patents

Abstract

An object of the present invention is to improve the setability of tableware while ensuring a predetermined cleaning performance.
A cleaning tank 2 for storing a tableware basket 4 in which tableware 3 is arranged, a cleaning means 6 for circulating cleaning water in the cleaning tank 2, and a heating means 5 for heating the cleaning water in the cleaning tank 2; , A draining means 10 for discharging the cleaning water in the cleaning tank 2, a cleaning nozzle 7 which is arranged so as to be rotatable in the cleaning tank 2 and has an injection hole 8 for injecting the cleaning water, and the cleaning nozzle 7 by an electric motor. By providing the electric drive means 18 for driving, the cleaning nozzle 7 is rotated in the cleaning tank 2 by the electric drive means 18, so that the cleaning nozzle is independent of the arrangement, the injection angle, and the number of the injection holes 8 on the cleaning nozzle 7. 7 can be rotated at a predetermined rotational speed. Therefore, since the injection hole 8 can be arranged at an arbitrary position of the washing nozzle 7, even if the deep tableware 3 such as a tea bowl or a soup bowl is set at an arbitrary position of the tableware basket 4, it can be washed. It becomes possible.
[Selection] Figure 1

Description

  The present invention relates to a dishwasher for washing tableware and cooking items in a general household.

  Conventionally, this type of dishwasher 1 has a structure as shown in FIG. Hereinafter, the configuration will be described.

  As shown in FIG. 14, the washing tub 2 is provided with a tableware basket 4 for storing the tableware 3 therein. The cleaning tank 2 is provided with a heating means 5 (for example, a sheathed heater) for heating the cleaning water in the cleaning tank 2 and a cleaning means 6 (for example, a cleaning pump) disposed in the lower part of the cleaning tank 2. Is configured to pressurize the cleaning water and spray the cleaning water from the injection hole 8 of the cleaning nozzle 7 to clean the tableware 3 stored in the tableware basket 4. The water supply valve 9 supplies tap water to the cleaning tank 2. The washing water in the washing tank 2 is drained by the drainage means 10.

  The filter 11 is provided in the washing tank 2 and collects leftovers (a food adhering to the tableware 3 as dirt is called leftovers) in the washing process and the rinsing process. The air blowing means 12 operates in a drying process to blow air outside the apparatus into the cleaning tank 2 and exhausts it from the exhaust port 13, thereby drying the tableware 3 in the cleaning tank 2.

  A door 14 is provided on the front surface of the cleaning tank 2 so as to be freely opened and closed.

  The temperature detection means 15 detects the temperature of the cleaning water, air, and the heating means 5 via the cleaning tank 2, and inputs the output to the control device 16. The control device 16 controls the heating means 5 based on the output of the temperature detection means 15 and also controls the cleaning means 6, the water supply valve 9, the drainage means 10, and the air blowing means 12 to perform a series of cleaning, rinsing and drying. It is configured to sequentially control the stroke.

  The operation of the above configuration will be described. When the user opens the door 14 forward, places the tableware 3 in the tableware basket 4, stores it in the washing tub 2, puts the detergent into it, and starts operation, first the drainage means 10. Is operated, and the cleaning water (referred to as residual water) remaining in the cleaning tank 2 in the previous operation or the like is discharged outside the apparatus.

  Then, the water supply valve 9 operates to supply cleaning water to the cleaning tank 2. When the predetermined cleaning water is supplied, the cleaning means 6 pressurizes the cleaning water, and the cleaning water is sprayed from the injection holes 8 provided in the cleaning nozzle 7 together with the detergent. Thus, the cleaning process is performed. In this cleaning process, the heating means 5 provided in the cleaning tank 2 is energized to heat the cleaning water to a predetermined temperature in the cleaning process.

  After a predetermined time of washing process, washing water containing dirt washed off from the tableware 3 is discharged to the outside by the drainage means 10. Subsequently, the cleaning water is newly supplied and sprayed again from the injection holes 8 provided in the cleaning nozzle 7 to perform the process of rinsing the tableware 3 soiled with detergent, leftovers or the like.

  When this rinsing process is completed, the washing water is again discharged out of the machine. This rinsing process is repeated several times in succession. In the cleaning and rinsing process, the leftovers are collected in the filter 11 provided in the cleaning tank 2. When the predetermined number of rinsing steps are completed, the drying step is started. In this process, the air blowing means 12 operates and air outside the machine is sent into the cleaning tank 2. The sent air is heated by the heating means 4, and then the tableware 3 is dried and discharged from the exhaust port 13 to the outside of the apparatus. After the drying process is completed, the operation is terminated.

  As shown in FIG. 15, the cleaning nozzle 7 has an injection reaction force F generated when the cleaning water is injected from the propelling injection holes 8 a that inject the cleaning water in the direction opposite to the rotation direction of the cleaning nozzle 7, and the nozzle bearing. It is configured to rotate at a predetermined rotation speed N (20 to 30 r / min) by the product of the rotation radius r which is the distance between the portion 17 and the propelling injection hole 8a, that is, the rotation torque T (= FXr) of the cleaning nozzle 7. Has been. The rotational speed of the cleaning nozzle 7 is such that it does not stop even if foreign matter such as sand or earth enters the nozzle bearing portion 17 that is the rotational center of the cleaning nozzle 7, and the rotational speed of the cleaning nozzle 7 is high. This is the rotational speed so that the vicinity of the nozzle bearing portion 17 is not worn away.

  Also, as shown in FIG. 16, the propelling injection hole 8a has an angle of washing water injection (angle α in FIG. 16), so that it can wash deep dishes 3a such as teacups and soup bowls. Is also designed.

  Then, when the injection angle of the injection hole 8 for injecting the cleaning water in the vertical direction is slightly inclined in the direction opposite to the rotation direction of the cleaning nozzle 7, the propulsion injection hole 8a is formed (see Patent Document 1).

  Further, as a rotating means of the cleaning nozzle 7, there is one that is rotated by a motor as shown in Patent Document 2. However, in the configuration of Patent Document 2, the flexible piping connecting the cleaning nozzle body and the axial flow pump is rotated by a motor, and the cleaning nozzle body itself has a self-rotating nozzle, Since it rotates by the injection reaction force of the nozzle for rotation, the structure of the cleaning nozzle 7 is the same as that of Patent Document 1.

Japanese Patent Laid-Open No. 07-031575 JP 2005-329022 A

  However, the configuration of the conventional dishwasher 1 as shown in FIG. 14 has the following problems.

  The rotational speed of the cleaning nozzle 7 is determined by the injection reaction force F of the cleaning water injected from the propulsion injection hole 8a and the rotation radius r. If the applied pressure of the cleaning water by the cleaning means 6 is constant, the injection reaction force from the propulsion injection hole 8a is constant, so that the cleaning nozzle 7 is rotated at a predetermined rotational speed N, the length of the rotation radius r, That is, the position of the propelling injection hole 8a with respect to the cleaning nozzle 7 is determined to be a predetermined position. Further, if the number of the propulsion injection holes 8a is increased, the injection reaction force F from the propulsion injection holes 8a of the entire cleaning nozzle 7 is increased, so that the rotation speed of the cleaning nozzle 7 becomes higher than the predetermined rotation speed N. The number of injection holes 8a is also substantially constant.

  As a means for increasing the number of the propulsion injection holes 8a and setting the rotation speed of the cleaning nozzle 7 to the predetermined rotation speed N, the injection angle of the propulsion injection holes 8a (angle α in FIG. 16) may be reduced. Decreasing the injection angle means that the propulsion injection hole 8a approaches the injection angle of the injection hole 8 for injecting the cleaning water in the vertical direction, so that the penetration of the cleaning water into the tableware 3a is deteriorated. The subject that the washing performance of tableware 3a will fall will arise.

For this reason, as shown in FIG. 17 (showing an area where the deep dishes 3a such as tea bowls and soup bowls can obtain a predetermined cleaning performance), the deep dishes 3a such as tea bowls and soup bowls, It can be disposed only in the range A where the cleaning water sprayed from the propulsion spray holes 8a can reach. Moreover, the direction of the set of deep type tableware 3a, such as a bowl and a soup bowl, becomes the same direction. That is, the user has a problem that the tableware 3 can be set at a predetermined position of the tableware basket 4 only in a predetermined direction.

  This invention solves the said conventional subject, and it aims at improving the set property of tableware, ensuring predetermined washing | cleaning performance.

  In order to solve the above-described conventional problems, a dishwasher according to the present invention includes a washing tub that stores a tableware basket in which dishes are placed, a cleaning unit that circulates the cleaning water in the cleaning tub, and a cleaning water in the cleaning tub. A heating means for heating the water, a drainage means for discharging the cleaning water in the cleaning tank, a cleaning nozzle arranged to be rotatable in the cleaning tank and having an injection hole for injecting the cleaning water, and the cleaning nozzle by an electric motor. An electric drive means for driving is provided.

  As a result, the cleaning nozzle is rotated in the cleaning tank by the electric drive means, so the cleaning nozzle rotates at a predetermined number of rotations regardless of the arrangement of the injection holes on the cleaning nozzle, the injection angle of the injection holes, and the number of injection holes. can do. Therefore, since the spray hole can be arranged at any position of the washing nozzle, it is possible to wash even if deep dishes such as tea bowls and soup bowls are set at any position of the tableware basket, that is, It becomes possible to arrange | position to the cleaning tank whole surface, and even if it arrange | positions tableware freely in a cleaning tank, a predetermined | prescribed cleaning performance can be obtained.

  Since the dishwasher according to the present invention has the configuration of claim 1, since the cleaning nozzle is rotated in the cleaning tank by the electric drive means, the arrangement of the injection holes on the cleaning nozzle, the injection angle of the injection holes, and the injection holes Regardless of the number of the cleaning nozzles, the cleaning nozzle can rotate at a predetermined number of rotations. Therefore, since the injection hole can be arranged at an arbitrary position of the cleaning nozzle, it is possible to perform cleaning even if a deep tableware such as a tea bowl or a soup bowl is set at an arbitrary position of the tableware basket. Therefore, the setability of tableware can be improved, and a predetermined cleaning performance can also be established.

Sectional drawing of the dishwasher of 1st Example of this invention The figure which shows arrangement | positioning of the propulsion injection hole on the washing nozzle of the same dishwasher The figure which shows the injection state of the washing water from the propulsion injection hole of the same dishwasher The figure which shows the range which can wash deep dishes such as tea bowl and soup bowl of the same dishwasher The figure which shows arrangement | positioning of the reverse direction injection hole on the washing nozzle of the same dishwasher The figure which shows the range in which deep dishes such as teacups and soup bowls can be washed when reverse spray holes are provided in the washing nozzle (A) The figure which shows the supply state of the washing water with respect to filth when the washing nozzle of the tableware washing machine is rotated in the rotation direction of the clock. (B) The washing nozzle of the tableware washing machine is rotated in the counterclockwise direction of the clock. Of supply of cleaning water to filth The figure which shows transition of the temperature in the washing tub with respect to the operation process of the dishwasher The figure which provided the 1st flowing water channel and the 2nd flowing water channel in the washing nozzle of the tableware washing machine, and provided the vertical injection hole and the inclined injection hole in each flowing water channel (A) The switching means is provided in the circulation path of the dishwasher, and the state of the switching means when supplying the washing water only to the first water channel is shown. (B) The switching means to the circulation path of the dishwasher The figure which shows the state of the switching means in the case of supplying cleaning water only to the second flowing water channel The figure which shows another example which provided the 1st water flow path and the 2nd water flow path in the washing nozzle of the tableware washing machine, and provided the vertical injection hole and the inclination injection hole in each water flow path. The figure which shows the state which rotated the washing nozzle after the washing | cleaning process or the rinse process of the same dishwasher after a heating rinse process or during a drainage process The figure which shows the state which rotated the washing nozzle during the drying process of the same dishwasher Cross-sectional view of a conventional dishwasher Enlarged view of the washing nozzle of the dishwasher Partial sectional view of the vicinity of the propelling injection hole of the washing nozzle of the dishwasher The figure which shows the range which can wash deep dishes such as tea bowl and soup bowl of the same dishwasher

  According to a first aspect of the present invention, there is provided a cleaning tank for storing a tableware basket in which dishes are arranged, a cleaning means for circulating the cleaning water in the cleaning tank, a heating means for heating the cleaning water in the cleaning tank, and a cleaning tank. It is provided with a draining means for discharging the cleaning water, a cleaning nozzle that is arranged so as to be able to rotate in the cleaning tank and has an injection hole for injecting the cleaning water, and an electric drive means for driving the cleaning nozzle with an electric motor. Since the cleaning nozzle is rotated in the cleaning tank by electric drive means, the cleaning nozzle rotates at a predetermined number of rotations regardless of the arrangement of the injection holes on the cleaning nozzle, the injection angle of the injection holes, and the number of injection holes. Can do. Therefore, since the injection hole can be arranged at an arbitrary position of the cleaning nozzle, it is possible to perform cleaning even if a deep tableware such as a tea bowl or a soup bowl is set at an arbitrary position of the tableware basket. Therefore, the setability of tableware can be improved, and a predetermined cleaning performance can also be established.

  The second invention particularly has an injection hole for injecting in the direction opposite to the rotation direction of the cleaning nozzle of the first invention, and an injection hole for injecting in the same direction as the rotation direction of the cleaning nozzle. Even if the injection hole is provided in the same direction as the rotation direction, the washing nozzle can be rotated at a predetermined number of rotations by electric drive means, and deep dishes such as teacups and soup bowls can be set in any direction. Even so, the washing water can enter and wash deep dishes such as tea bowls and soup bowls. Therefore, deep dishes such as tea bowls and soup bowls can be set in an arbitrary direction, the setability of the dishes can be improved, and predetermined washing can be obtained.

  In the third invention, in particular, the electric drive means of the first or second invention rotates the cleaning nozzle in the clockwise direction and the counterclockwise direction, and the tableware is injected from the injection hole. The supply direction of the wash water can be changed from the rotation direction of the timepiece or from the reverse rotation direction of the timepiece. Therefore, since it wash | cleans with the water flow of two directions with respect to the filth attached to the tableware and the tableware, the filth can be easily peeled from the tableware, and the cleaning performance can be improved.

  In the fourth aspect of the invention, in particular, the cleaning means of any one of the first to third aspects controls the pressure of the cleaning water so that the amount of the cleaning water sprayed from the spray nozzle of the cleaning nozzle changes. If the pressure applied to the cleaning water of the cleaning means is large, a large amount of cleaning water is jetted from the injection hole and the pressure applied to the cleaning water of the cleaning means is small. The pressure is low and a small amount of washing water can be jetted from the jet holes. Therefore, since the strength of the water flow of the cleaning water sprayed from the injection holes can be increased, it is possible to supply the cleaning water with strength against the soil adhering to the tableware, and the soil easily peels off from the tableware. can do.

In the fifth aspect of the invention, in particular, in the turning course of any one of the first to third aspects of the invention, the washing process for washing dishes, the rinsing process for rinsing dishes, and the washing water is heated by heating means. The table is provided with a rinsing and rinsing process for the tableware, and the electric drive means is controlled so that the number of rotations of the cleaning nozzle in the cleaning process and the heating and rinsing process is lower than that of the rinsing process. In the cleaning process and heating rinsing process, the cleaning nozzle rotates slowly, so that cleaning water can be supplied to every corner of the tableware and cleaning tank, and the cleaning process time and heating rinsing process time are long. Water can be supplied to the tableware many times, and the cleaning performance can be improved. On the other hand, in the rinsing process, the washing nozzle can be rotated a plurality of times in a short time, as in the conventional configuration, so that the washing water can be supplied to the tableware a plurality of times. Therefore, the cleaning performance of the tableware can be improved by setting the number of rotations of the cleaning nozzle to be lower than that of the rinsing process in the cleaning process and the heating rinsing process.

  In a sixth aspect of the invention, in particular, the cleaning nozzle according to any one of the first to fifth aspects includes a first water flow channel in which vertical injection holes for injecting cleaning water in a substantially vertical direction are disposed, and cleaning water. Is provided with a second water flow passage provided with an inclined injection hole that is inclined with respect to the substantially vertical direction, and between the circulation passage connecting the cleaning means and the cleaning nozzle, The switching means for switching the supply of the cleaning water to the flow channel of the cleaning nozzle can be provided, and the injection holes for spraying in the vertical direction can be uniformly arranged in the first flow channel of the cleaning nozzle. The injection holes for injecting and inclining with respect to the vertical direction of the water flow channel can be uniformly disposed, and the switching means can inject the cleaning water only from the injection holes for vertical injection through the first flow channel. Or jet that inclines with respect to the vertical direction through the second flowing water channel Because it can be sprayed only from the top, it can be cleaned by the spray holes that spray in the vertical direction even if it is placed in any position and direction, such as flat dishes, deep dishes such as tea bowls and soup bowls Even if it is arranged at an arbitrary position and direction, it can be cleaned by the injection holes that incline with respect to the vertical direction.

  On the other hand, cleaning water is injected from the cleaning nozzle only from the injection hole that injects in the vertical direction via the first flow channel by the switching means, or is inclined with respect to the vertical direction through the second flow channel. The cleaning water is injected only from the injection holes to be injected, that is, the cleaning water is injected only from either the injection holes that are injected in the vertical direction or the injection holes that are inclined with respect to the vertical direction. Only the amount of washing water will be jetted.

  Therefore, even when dishes such as flat dishes and deep dishes such as tea bowls and soup bowls are set in any position and direction, the amount of water used by the dishwasher is not increased, that is, the dishwasher is running. Predetermined cleaning performance can be obtained without increasing cost and power consumption.

  In the seventh aspect of the invention, in particular, after the cleaning process or after the rinsing process or after the heating rinsing process of the invention of any one of the first to sixth aspects, or during the draining process of discharging the cleaning water in the cleaning tank by the drainage means In addition, the electric drive means rotates the washing nozzle, and the washing water, dirt, etc. adhering to or accumulating on the washing nozzle can be separated from the washing nozzle by the action of centrifugal force. Therefore, it is possible to reduce dirty cleaning water and dirt remaining in the cleaning tank after the cleaning process or after the rinsing process or after the heating rinsing process, so that the rinsing process or the rinsing process performed after the cleaning process can be reduced. The next heating rinse step can be rinsed with clean water.

  Therefore, the cleaning performance of tableware can be improved.

  Moreover, the remaining water remaining in the washing tank after the heating rinsing process can be made clean, and unpleasant odor in the washing tank can be reduced.

  Furthermore, since the amount of cleaning water remaining in the cleaning nozzle can be reduced by rotating the cleaning nozzle during the draining process performed after the heating rinsing process or after the heating rinsing process, it remains in the cleaning tank during the drying process. Since the amount of washing water to be dried can be reduced, the drying performance can be improved.

In the eighth aspect of the invention, in particular, the electric drive means of the seventh aspect of the invention makes the number of rotations of the washing nozzle higher after the washing step, after the rinsing step, or after the heating rinsing step, and is attached to the washing nozzle. Since water and dirt are further away from the cleaning nozzle and less cleaning water and dirt are attached to the cleaning nozzle, it is performed after the rinsing process or the rinsing process performed after the cleaning process. The heating rinse process can be rinsed with even cleaner water.

  Therefore, it is possible to further improve the cleaning performance of tableware.

  In the ninth aspect of the invention, in particular, the electric drive means of the first or second aspect of the invention rotates the cleaning nozzle in the clockwise direction or the counterclockwise direction of the timepiece, and adheres to the cleaning nozzle. Since the cleaning water and filth that have been moved further away from the cleaning nozzle and the cleaning water and filth adhering to the cleaning nozzle can be further reduced, the rinsing process and the rinsing process performed after the cleaning process The next heating rinse step can be rinsed with even more clean water.

  Therefore, the cleaning performance of tableware can be further improved.

  The tenth aspect of the invention includes, in particular, the operation course according to any one of the first to ninth aspects, including a drying step of drying the tableware by a blowing means for supplying air to the tableware. The driving means drives the washing nozzle, and the washing nozzle can agitate the outside air that is sent to the heating means by the blowing means and heated. Therefore, the outside air sent by the blower means does not simply flow toward the heating means and the tableware, but flows in various directions in the cleaning tank. Therefore, the outside air heated by the heating means can uniformly heat the tableware disposed in every corner in the cleaning tank, and can improve the drying performance of the tableware.

  In the eleventh aspect of the invention, in particular, the electric drive means of the tenth aspect of the invention makes the number of rotations of the washing nozzle higher after the washing process, after the rinsing process or after the heating rinsing process, Since it can stir more, the drying performance of tableware can be improved more.

  In the twelfth invention, in particular, the electric drive means of the tenth or eleventh invention rotates the cleaning nozzle in the clockwise direction or the counterclockwise direction of the clock, and the cleaning nozzle is cleaned. Since the air in the tank can be further stirred, the drying performance of the tableware can be further improved.

  In a thirteenth aspect of the invention, in particular, the cleaning nozzle of any one of the tenth to twelfth aspects includes a stirring blade for stirring air, and the cleaning nozzle further stirs the air in the cleaning tank. Therefore, the drying performance of the tableware can be further improved.

  Hereinafter, a first embodiment of the present invention will be described with reference to the drawings. In addition, the thing of the same structure as a prior art example attaches | subjects the same code | symbol, and abbreviate | omits description.

Example 1
In the dishwasher 1 shown in FIG. 1, heating means 5 (for example, a sheathed heater) that heats the washing water is provided in the washing tub 2 that houses the tableware basket 4 in which the tableware 3 is placed. The cleaning means 6 disposed on the lower surface of the cleaning tank 2 pressurizes the cleaning water. The cleaning water pressurized by the cleaning means 6 is sprayed from the spray hole 8 of the cleaning nozzle 7 provided in the cleaning tank 2. The cleaning water in the cleaning tank 2 is supplied from the water supply valve 9 to the cleaning tank 2 and drained by the drainage means 10.

  The filter 11 is provided in the washing tank 2 and collects leftovers (food that has adhered to the tableware 3 as dirt is called leftovers) in the washing step of washing the tableware 3 and the rinsing step of the tableware 3. .

  The blowing means 12 operates in the drying process, supplies the air outside the dishwasher 1 into the washing tank 2 and exhausts it from the exhaust port 13, thereby drying the tableware 3 in the washing tank 2.

  A door 14 is provided on the front surface of the washing tub 2 so as to be freely opened and closed. By opening the door 14, the tableware 3 can be freely taken in and out of the dishwasher 1.

  The temperature detection means 15 detects the temperature of the cleaning water, air, and heating means 5 in the cleaning tank 2 and inputs the output to the control device 16. The control device 16 controls the heating means 5, the cleaning means 6, the water supply valve 9, the drainage means 10, and the air blowing means 12 based on the output of the temperature detection means 15 to execute a series of steps of cleaning, rinsing and drying. It is configured as follows.

  The electric drive means 18 for driving the cleaning nozzle 7 is capable of rotating the cleaning nozzle 7 regardless of whether the cleaning water is supplied to the cleaning nozzle 7 or not.

  The operation of the above configuration will be described. When the user opens the door 14, places the tableware 3 in the tableware basket 4, puts the detergent in the washing tub 2, puts the detergent, closes the door and starts operation, draining means 10 operates, and the washing water (referred to as residual water) remaining in the washing tank 2 in the previous operation or the like is discharged out of the dishwasher 1.

  Next, the water supply valve 9 operates to supply a predetermined amount of cleaning water to the cleaning tank 2. When a predetermined amount of cleaning water is supplied, the cleaning water is pressurized by the cleaning means 6 and the cleaning water is sprayed from the injection holes 8 provided in the cleaning nozzle 7 together with the detergent. Thus, the cleaning process is performed. In this cleaning process, the heating means 5 provided in the cleaning tank 2 is energized to heat the cleaning water to a predetermined cleaning temperature.

  At the same time, when the electric drive means 18 rotates the cleaning nozzle 7, the cleaning water sprayed from the injection hole 8 of the cleaning nozzle 7 supplies the cleaning water uniformly to the tableware 3 arranged in the tableware basket 4, Wash the dishes 3.

  When the washing process is performed for a predetermined time, the drainage means 10 discharges the washing water containing the dirt washed off from the tableware 3 to the outside of the apparatus. Then, the water supply valve 9 newly supplies cleaning water, and the cleaning water is again sprayed from the injection holes 8 provided in the cleaning nozzle 7, and the process of rinsing the tableware 3 soiled with detergent, leftovers, etc. is executed.

  Also at this time, since the electric drive means 18 drives and rotates the cleaning nozzle 7, the cleaning water sprayed from the injection hole 8 of the cleaning nozzle 7 is uniformly applied to the tableware 3 arranged in the tableware basket 4. Supply and rinse tableware 3

  When this rinsing process is completed, the washing water is again discharged out of the machine. This rinsing process is repeated several times in succession. In the cleaning and rinsing process, the leftovers are collected in a filter 11 provided in the cleaning tank 2. When the predetermined number of rinsing steps are completed, the drying step is started. In this process, the air blowing means 12 operates and air outside the dishwasher 1 is sent into the washing tank 2. The sent air is heated by the heating means 5, and then the tableware 3 is dried and discharged from the exhaust port 13 to the outside of the apparatus. After the drying process is completed, the operation is terminated.

  In the rinsing process that is performed a plurality of times, at least one rinsing process may be a process of rinsing and heating the tableware 3 while heating the washing water by the heating means 5.

According to this embodiment configured as described above, the cleaning nozzle 7 is rotated in the cleaning tank 2 by the electric drive means 18 as shown in FIG. Regardless of the arrangement of the propulsion injection holes 8a and the injection angle α of the propulsion injection holes 8a and the number of the propulsion injection holes 8a as shown in FIG. 3, the cleaning nozzle 7 can rotate at a predetermined rotation speed N2. Therefore, since the propelling injection hole 8a can be arranged at an arbitrary position of the washing nozzle 7, a deep tableware 3a such as a tea bowl or a soup bowl can be placed at an arbitrary position of the tableware basket 4 as shown in FIG. Even if set, it can be cleaned, that is, it can be disposed on the entire surface of the cleaning tank 2, and even if a deep dish 3a such as a tea bowl or a soup bowl is freely disposed in the cleaning tank 2, it is predetermined. Cleaning performance can be obtained. Therefore, the set property of the tableware 3 can be improved.

  Since the cleaning nozzle 7 is rotated by the electric drive means 18, even when the cleaning nozzle 7 is rotated at a low rotation speed (for example, 5 to 10 r / min), the nozzle bearing portion 17 that is the rotation center of the cleaning nozzle 7 is provided. Even if foreign matter such as sand or earth enters, the cleaning nozzle 7 does not stop.

  Then, as shown in FIG. 5, even if the reverse injection hole 8 b whose spray direction is the same direction as the rotation direction of the cleaning nozzle 7 as well as the reverse direction of the rotation direction of the cleaning nozzle 7 is provided, The electric drive means 18 can be rotated at a predetermined number of revolutions N2, and as shown in FIG. 6, even if a deep tableware 3a such as a tea bowl or a soup bowl is set in an arbitrary direction, the washing water remains in the tea bowl. It is possible to infiltrate and wash deep dishes 3a such as soup bowls. Therefore, deep tableware 3a such as tea bowls and soup bowls can be set in an arbitrary direction, the setability of tableware 3 can be improved, and predetermined washing can be obtained.

  Then, the electric drive means 18 causes the cleaning nozzle 7 to rotate in the clockwise direction or the counterclockwise direction as shown in FIG. The supply direction of the cleaning water sprayed from the hole 8 can be changed from the rotation direction of the timepiece, or from the reverse rotation direction of the timepiece as shown in FIG. Therefore, since the filth Y adhered to the tableware 3 and the tableware 3 is washed with a two-way water flow, the filth Y can be easily peeled from the tableware 3 and the cleaning performance can be improved.

  The cycle of rotating the cleaning nozzle 7 in the clockwise direction or rotating it in the counterclockwise direction may be every time the cleaning nozzle 7 rotates in the cleaning tank 2 or rotates a plurality of times. It may be every time.

  The cleaning means 6 controls the pressure of the cleaning water so that the amount of the cleaning water sprayed from the injection hole 8 of the cleaning nozzle 7 changes, that is, the pressure applied to the cleaning water by the cleaning means 6. When the pressure is large, the pressure is high and a large amount of washing water is ejected from the injection hole 8. When the pressure applied to the washing water of the cleaning means 6 is small, the pressure is low and a small amount of washing water is ejected from the injection hole 8. By doing so, the strength of the water flow of the cleaning water sprayed from the injection holes 8 can be increased, so that the cleaning water with strength can be supplied also to the filth Y adhering to the tableware 3. And the filth Y can be easily peeled off from the tableware 3.

  Then, as shown in FIG. 8, the cleaning process and the heating rinsing process must heat the cleaning water to a predetermined temperature in each process, so that the cleaning process and the heating rinsing process are performed in a longer time than the rinsing process. (E.g., washing process 20 minutes, heating rinse process 25 minutes, rinse process 1 minute, etc.). In order to improve the cleaning performance, the cleaning nozzle 7 is slowly rotated (for example, 1 r / min) so that the cleaning water is supplied to every corner of the tableware 3 and the cleaning tank 2, It is good to realize both supplying the washing water many times. However, if the washing nozzle 7 is rotated slowly, the washing water may not be supplied to the tableware 3 several times in the rinsing process (the number of rotations of the washing nozzle 7 is 1 r / min for one minute of the rinsing process). In min, the washing water is supplied to the tableware 3 only once or twice, and the rinsing performance is deteriorated).

  Therefore, the electric drive means 18 controls the rotational speed N3 of the cleaning nozzle 7 in the cleaning process or the heating rinsing process to rotate at a rotational speed lower than the rotational speed N4 in the rinsing process (for example, the rotational speed N3 is Since the rotation speed N4 is 30 r / min for 1 r / min), the cleaning nozzle 7 rotates slowly in the cleaning process and the heating rinsing process (one rotation in 60 seconds when N3 = 1 r / min). Washing water can be supplied to every corner of the tableware 3 and the washing tank 2, and since the washing process time and the heating rinse process time are long, the washing water can be supplied to the tableware 3 many times, and the washing performance Can be improved. On the other hand, in the rinsing process, the cleaning nozzle 7 can be rotated a plurality of times within a short period of time, as in the conventional configuration (when N4 = 30 r / min, one rotation is performed in 2 seconds. The cleaning nozzle 7 is operated for one minute. The washing water can be supplied to the tableware 3 a plurality of times (when the washing nozzle 7 is rotated at the same number of rotations as before, the rinsing performance of the tableware 3 in the rinsing process is It is the same as before).

  As described above, the cleaning performance of the tableware 3 can be improved by setting the number of rotations of the cleaning nozzle 7 to be lower than that in the rinsing process in the cleaning process and the heating rinsing process.

  Then, for the tableware basket 3, in order to obtain a predetermined cleaning performance even if a deep type tableware 3a such as a tea bowl or a soup bowl is arranged in an arbitrary position or an arbitrary direction, Although the number of the propulsion injection holes 8a may be increased, the tableware 3b such as a flat plate must also have a predetermined cleaning performance, so that the total number of the injection holes 8 and the propulsion injection holes 8a provided in the cleaning nozzle 7 is increased. (For example, conventionally, six injection holes 8 and two propulsion injection holes are a total of eight, whereas six injection holes 8 and six propulsion injection holes are a total of 16).

  An increase in the total number of the injection holes 8 and the propelling injection holes 8a increases the amount of cleaning water supplied from the cleaning nozzle 7 to the tableware 3, but the amount of cleaning water supplied in each process is conventionally increased. If it is the same amount, the amount of cleaning water will be insufficient in the cleaning process, the rinsing process, and the heating rinsing process, and a predetermined injection pressure will be generated from the individual injection holes 8 and the propulsion injection holes 8a provided in the cleaning nozzle 7. The cleaning water or the predetermined amount of cleaning water cannot be supplied to the tableware 3 in reverse, and the predetermined cleaning performance cannot be obtained. Therefore, it is necessary to increase the washing water supplied in the washing process, the rinsing process, and the heating rinsing process.

  However, since the amount of washing water used by the dishwasher 1 increases when the amount of washing water supplied in the washing process, the rinsing process, and the heating rinsing process increases, the running cost and power consumption of the dishwasher 1 are increased. Will increase.

  Therefore, as shown in FIG. 9, the cleaning nozzle 7 includes a first water flow channel 19 provided with a vertical injection hole 8 c for injecting cleaning water in a substantially vertical direction mainly for cleaning tableware 3 b such as a flat plate. And a second water flow channel 20 provided with an inclined injection hole 8d for injecting cleaning water with an inclination with respect to a substantially vertical direction in order to wash deep dishes 3a such as tea bowls and soup bowls, As shown in FIGS. 10 (a) and 10 (b), the cleaning water is supplied to the first flow path 19 and the second flow path 20 to the circulation path 21 connecting the cleaning means 6 and the cleaning nozzle 7. By providing the switching means 22 for switching the operation, the vertical injection holes 8c can be uniformly arranged in the first flow channel 19 of the cleaning nozzle 7 (for example, eight vertical injection holes 8c). The inclined injection holes 8d can be uniformly arranged in the water flow channel 20 ( 10 (for example, eight inclined injection holes 8d), as shown in FIG. 10 (a), the switching means 22 injects cleaning water from only the vertical injection holes 8c through the first flow channel 19, or FIG. As shown in b), since it is possible to inject only from the inclined injection hole 8d through the second flowing water channel 20, the vertical injection hole can be provided even if the tableware 3b such as a flat plate is arranged in an arbitrary position or direction. 8c can be washed, and even if deep dishes 3a such as tea bowls and soup bowls are arranged in arbitrary positions and directions, they can be washed by the inclined injection holes 8d.

  On the other hand, the cleaning means 7 injects cleaning water from the cleaning nozzle 7 through the first water channel 19 only from the vertical injection hole 8c or through the second water channel 20 from the inclined injection hole 8d only. Since water is injected, that is, the cleaning water is injected only from either the vertical injection hole 8c or the inclined injection hole 8d, only the amount of cleaning water equivalent to the conventional one is injected (for example, the conventional injection hole 8 is 6). 8 vertical injection holes 8c provided in the first water flow channel 19 and 8 inclined injection holes 8d provided in the second water flow channel 20 for a total of 8 of the two propulsion injection holes. Then, since the cleaning nozzle 7 only injects the cleaning water from either the first flow channel 19 or the second flow channel 20, the cleaning nozzle 7 always injects the cleaning water only from the eight injection holes 8. become).

  Accordingly, even if the tableware 3b such as a flat plate or the deep type tableware 3a such as a tea bowl or a soup bowl is set in an arbitrary position or direction, the amount of washing water used by the dishwasher 1 is not increased, that is, the tableware washing The predetermined cleaning performance can be obtained without increasing the running cost and power consumption of the machine 1.

  As shown in FIG. 11, the vertical injection holes 8 c and the inclined injection holes 8 d may be arranged in a staggered manner in the first flowing water channel 19 and the second flowing water channel 20.

  Then, after the cleaning process, after the rinsing process or after the heating rinsing process, or by rotating the cleaning nozzle 7 by the electric drive means 18 during the draining process, as shown in FIG. The cleaning water X, the filth Z, and the like that are being removed can be separated from the cleaning nozzle 7 by the action of centrifugal force. Therefore, it is possible to reduce the dirty cleaning water X, the filth Z, etc. remaining in the cleaning tank 2 after the cleaning process or after the rinsing process or after the heating rinsing process, so that the rinsing process performed after the cleaning process, The heating rinse step performed after the rinse step can be rinsed with clean water.

  Therefore, the cleaning performance of the tableware 3 can be improved.

  Moreover, the remaining water remaining in the cleaning tank 2 after the heating rinsing process can be made clean, and unpleasant odor in the cleaning tank 2 can be reduced.

  Further, since the amount of the cleaning water X remaining in the cleaning nozzle 7 can be reduced by rotating the cleaning nozzle 7 after the heating rinsing process or during the draining process performed after the heating rinsing process, the cleaning tank is used in the drying process. Since the amount of washing water to be dried remaining in 2 can be reduced, the drying performance can be improved.

  In addition, if the electric drive means 18 makes the rotation speed of the washing nozzle 7 higher than the washing process, the rinsing process, and the heating rinsing process, the washing water X and the filth Z attached to the washing nozzle 7 are more washed. The cleaning water X and the dirt Z adhering to the cleaning nozzle 7 can be further reduced.

  The electric drive means 18 not only rotates the cleaning nozzle 7 in one direction, but also rotates the cleaning nozzle 7 by rotating it in the clockwise direction or rotating it in the reverse direction. The cleaning water X and the filth Z attached to the cleaning nozzle 7 are further away from the cleaning nozzle 7, and the cleaning water X and the filth Z attached to the cleaning nozzle 7 can be further reduced.

  Further, the cycle of rotating the cleaning nozzle 7 in the clockwise direction or rotating in the reverse direction is every time the cleaning nozzle 7 rotates once in the cleaning tank 2 or every time it rotates a plurality of times. Or it may be less than one rotation.

  Then, by rotating the cleaning nozzle 7 by the electric drive means 18 during the drying process, as shown in FIG. 13, the outside air that is sent to the heating means 5 through the air outlet 23 by the air blowing means 12 is heated. The cleaning nozzle 7 can be stirred. Therefore, the outside air sent by the blowing means 12 does not simply flow from the blowing port 23 toward the heating means 5 and further toward the exhaust port 13 but flows in various directions in the cleaning tank 2. Will go. Therefore, the outside air heated by the heating means 5 can uniformly heat the tableware 3 in the washing tub 2, and the drying performance of the tableware 3 can be improved.

  In addition, since the electric drive means 18 can stir the air in the washing tank 2 more if the rotation speed of the washing nozzle 7 is made higher than the washing process, the rinsing process, and the heating rinsing process, the tableware 3 The drying performance can be further improved.

  The electric drive means 18 not only rotates the cleaning nozzle 7 in one direction, but also rotates the cleaning nozzle 7 by rotating it in the clockwise direction or rotating it in the reverse direction. Since the cleaning nozzle 7 can further stir the air in the cleaning tank 2, the drying performance of the tableware 3 can be further improved.

  Further, the cycle of rotating the cleaning nozzle 7 in the clockwise direction or rotating in the reverse direction is every time the cleaning nozzle 7 rotates once in the cleaning tank 2 or every time it rotates a plurality of times. Or it may be less than one rotation.

  Further, as shown in FIG. 13, by providing the cleaning nozzle 7 with the stirring blade 24 for stirring the air in the cleaning tank 1, the cleaning nozzle 7 can further stir the air in the cleaning tank 2, The drying performance of the tableware 3 can be further improved.

  As described above, the dishwasher according to the present invention can obtain a predetermined cleaning performance even if the tableware is set in an arbitrary direction with respect to the tableware basket. It can also be used for commercial dishwashers.

DESCRIPTION OF SYMBOLS 1 Tableware washing machine 2 Washing tank 3 Tableware 4 Tableware basket 5 Heating means 6 Washing means 7 Washing nozzle 8 Injection hole 8c Vertical injection hole 8d Inclination injection hole 10 Drainage means 12 Blower means 18 Electric drive means 19 First flow channel 20 First Second flow channel 21 Circulation route 22 Switching means 24 Stirring blade

Claims (13)

A washing tub for storing tableware baskets in which dishes are arranged, a washing means for circulating the washing water in the washing tank, a heating means for heating the washing water in the washing tank, and a washing water in the washing tank. A dishwasher comprising: a draining means for discharging; a washing nozzle disposed so as to be rotatable in the washing tank and having an injection hole for injecting washing water; and an electric drive means for driving the washing nozzle by an electric motor. The dishwasher of Claim 1 which has the injection hole which injects in the reverse direction to the rotation direction of a washing nozzle, and the injection hole which injects in the same direction as the rotation direction of the said washing nozzle. The dishwasher according to claim 1, wherein the electric drive means rotates the washing nozzle in a rotating direction of the timepiece and in a reverse direction of the timepiece. The dish washing machine according to any one of claims 1 to 3, wherein the cleaning means controls the pressure of the cleaning water so that the amount of the cleaning water sprayed from the spray hole of the cleaning nozzle changes. The operation course includes a washing process for washing the dishes, a rinsing process for rinsing the dishes, and a rinsing process for rinsing the dishes while heating the washing water by the heating means, and the electric drive means includes the washing The dishwasher according to any one of claims 1 to 3, wherein the number of revolutions of the washing nozzle in the stroke and the heating and rinsing stroke is controlled to be lower than that in the rinsing stroke. The cleaning nozzle is provided with a first water flow channel provided with a vertical injection hole for injecting cleaning water in a substantially vertical direction, and an inclined injection hole for injecting the cleaning water with an inclination with respect to the substantially vertical direction. And a switching means for switching between supplying the cleaning water to the first flowing water path and the second flowing water path between the circulation paths connecting the cleaning means and the cleaning nozzle. The dishwasher according to any one of claims 1 to 5. The electric drive means rotates the washing nozzle after the washing process, after the rinsing process or after the heating rinsing process, or during the draining process of discharging the washing water in the washing tank by the draining means. The dishwasher as described in the item. 8. The dishwasher according to claim 7, wherein the electric drive means makes the number of rotations of the washing nozzle higher after the washing process, after the rinsing process, or after the heating rinsing process. The dishwasher according to claim 7 or 8, wherein the electric drive means rotates the washing nozzle in a rotation direction of the timepiece or in a reverse rotation direction of the timepiece. The operation course includes a drying step of drying the tableware by a blowing unit that supplies air to the tableware, and the electric driving unit drives the cleaning nozzle in the drying step. Dishwasher as described in The dishwasher according to claim 10, wherein the electric drive means makes the number of rotations of the washing nozzle higher after the washing process, after the rinsing process, or after the heating rinsing process. The dishwasher according to claim 10 or 11, wherein the electric drive means rotates the washing nozzle in a rotation direction of the timepiece or in a reverse rotation direction of the timepiece. The dish washing machine according to any one of claims 10 to 12, wherein the washing nozzle includes a stirring blade for stirring the air.

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