JP2010264160A - Dishwasher - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem that an injection hole for rotational propulsion is needed for rotating a rotary washing means. <P>SOLUTION: The dishwasher includes: a washing pump for pressurizing washing water; a first inner inflow passage and a second outer inflow passage which are like the substantially double-cylinder and in which washing water flows; a rotary washing means provided with a plurality of injection holes and having a first and a second conduits communicating with the first and second inflow passages to inject washing water while being rotated; and a water diversion means having a rotating rib forming a surface substantially vertical to the rotating direction in the second inflow passage and including first and second supply passages for selectively supplying washing water to the inflow passages. The first and second supply passages are formed substantially like a double-cylinder below the rotary washing means, and the second outer supply passage is formed spirally, so that the washing water of the second supply passage applies water pressure to the rotating rib while being rotated spirally. Thus, the injection hole for propulsion is not needed for rotating the rotary washing means, and all of the injection holes can be directed to material to be washed such as dishes to improve washing performance. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a dishwasher for washing dishes using washing water.

  Conventionally, in this type of dishwasher, the washing water pressurized by the washing pump is sent to the rotary washing means, and the object to be washed such as dishware is washed from the injection port provided in the rotary washing means. Spray water. At this time, in order to efficiently inject the cleaning water with a small number of injection ports, that is, at a high pressure, it is only necessary to rotate the rotary cleaning means around the bearing portion that supports the rotary cleaning means, and the rotary cleaning means is rotated. However, the reaction force of the cleaning water injected from the injection port is used without using an actuator such as a motor (for example, refer to Patent Document 1).

JP 2000-139807 A

  However, in the conventional dishwasher, a part of the washing water sprayed toward the object to be washed such as tableware must be used for rotating the rotary washing means, and the washing efficiency is deteriorated.

  The present invention solves the above-mentioned conventional problem, and rotates the rotary cleaning means by applying the pressure of the cleaning water sent from the spirally formed flow path to the rotating rib provided in the rotary nozzle. Therefore, it is possible to inject all the injection ports toward the object to be cleaned such as tableware, and furthermore, by providing a plurality of water conduits in the rotary cleaning means and switching them with the water distribution means, It is possible to inject, and it aims at improving cleaning performance efficiently by injecting wash water from other directions to to-be-washed objects, such as tableware.

  In order to solve the above-described conventional problems, the dishwasher of the present invention has a substantially double cylindrical shape into which a washing tank for storing objects to be washed such as tableware, a washing pump for pressurizing washing water, and washing water flows. A first inflow passage formed inside, a second inflow passage outside, a plurality of injection ports, a first water conduit that communicates with the first inflow passage, and the second inflow passage. A rotary cleaning means that has a second water conduit that communicates with the path and that injects cleaning water from the injection port while rotating; and a surface that is substantially perpendicular to the rotational direction of the rotary cleaning means is formed in the second inflow path The first supply channel and the second supply channel that selectively supply cleaning water to the inflow passage, and the first supply. The flow path and the second supply flow path are formed in a substantially double cylindrical shape below the inflow path of the rotary cleaning means, and the first supply flow path on the inside The outer second supply flow path has a spiral configuration, so that the cleaning water flowing through the second supply flow path applies a radial force to the rotation rib in the rotary cleaning means. Thus, the rotary cleaning means can be rotated in the same direction as the helical rotation direction. Therefore, there is no need to provide a propelling injection port for rotating the rotary cleaning means, and the cleaning performance can be improved.

  The dishwasher according to the present invention can direct all of the washing water sprayed from the jet nozzle provided in the rotary washing means to the article to be washed such as dishware, and can improve the washing performance.

Main sectional drawing of the dishwasher of Embodiment 1 of the present invention Top view of the main part of the dishwasher Top view of the main part of the dishwasher Cross section of the main part of the dishwasher Top view of the main part of the dishwasher Top view of the main part of the dishwasher Main part explanatory drawing of the dishwasher Top view of the main part of the dishwasher Perspective view of the main part of the dishwasher Cross section of the main part of the dishwasher

  The first invention is a cleaning tank for storing objects to be cleaned such as tableware, a cleaning pump for pressurizing cleaning water, and an inner first inflow passage formed in a substantially double cylindrical shape into which the cleaning water flows. An outer second inflow passage, a plurality of injection ports, a first water conduit that communicates with the first inflow passage, and a second water conduit that communicates with the second inflow passage. And rotating cleaning means for spraying cleaning water from the injection port while rotating, and a rotating rib provided on the second inflow path so as to form a surface substantially perpendicular to the rotation direction of the rotating cleaning means. , A water diversion means including a first supply channel and a second supply channel that selectively supply cleaning water to the inflow channel, the first supply channel and the second supply channel, It is formed in a substantially double cylindrical shape below the inflow passage of the rotary cleaning means, and the outer second supply passage is spiral with respect to the inner first supply passage. It is those that form, the washing water flowing through the second supply channel while rotating the spiral, can provide pressure to the rotation ribs. Therefore, there is no need for a propelling injection port for rotating the rotary cleaning means, and all the injection ports can be directed to an object to be cleaned such as tableware, so that the cleaning performance can be improved.

  According to a second aspect of the present invention, the rotating rib is configured by the first inflow path, the second inflow path is simplified, and the first inflow path also extends toward the second inflow path. The flow of washing water is also smooth. Therefore, it can wash | clean efficiently.

  According to a third aspect of the present invention, since the rotation rib is provided up to the lower end surfaces of the first inflow passage and the second inflow passage, the force received in the rotational direction from the spiral flow increases. Even if detergent or dirt is mixed in the cleaning water, the rotation of the rotary cleaning means is stabilized. Accordingly, the cleaning performance can be maintained efficiently and stably.

  According to a fourth aspect of the present invention, the rotation rib has a configuration in which the width increases upward, so that the washing water flowing through the second inflow passage is rotated in the rotation direction while minimizing the passage pressure loss. Since the cleaning pressure can be received, the energy of the cleaning water can be efficiently given to an object to be cleaned such as tableware.

  According to a fifth aspect of the present invention, the rotation rib is configured to be point-symmetric with respect to the center of the rotation cleaning means, and by providing the rotation rib at a point-symmetric position with respect to the rotation center, Can balance. This reduces the cleaning performance due to water leakage from the connecting part between the rotating cleaning means and the supply flow path when the rotating cleaning means rotates while tilting, and the occurrence of rotation failure due to local wear of the connecting part. Can be suppressed.

According to a sixth aspect of the present invention, the second supply flow path is configured to pass at least once in a spiral shape by passing over the first supply flow path below the rotary cleaning unit. Wash water is uniformly sent to the second inflow path. Therefore, the rotational speed of the rotary cleaning means is constant at any position, and water pressure can be uniformly applied to the rotary cleaning means in the upward direction, so that the rotary cleaning means is difficult to tilt. Thereby, it can wash | clean efficiently to-be-washed objects, such as tableware, in which position of the tableware basket.

  According to a seventh aspect of the present invention, the second supply flow path includes a rib provided with a surface substantially perpendicular to the flow direction of the cleaning water at the rearmost part of the path, and is configured in a spiral shape. It prevents energy loss due to the crossing of the washing water at the inlet and outlet of the supply channel 2 and can efficiently wash an object to be cleaned such as tableware.

  According to an eighth aspect of the present invention, the rotary cleaning means has a tower nozzle having at least one injection port extending upward in a substantially conical shape at a substantially central portion thereof, and the water conduit in the tower nozzle is The rotary cleaning means can rotate even when only the tower nozzle that does not have the rotary propulsion injection port is used for injection, and the water distribution means can further It is possible to inject high-pressure washing water over the entire washing tank by switching between the two. Therefore, it is possible to efficiently clean the object to be cleaned such as tableware.

(Embodiment 1)
FIG. 1 is a main cross-sectional view of a dishwasher according to a first embodiment of the present invention, and FIGS. In the figure, the dishwasher body 1 is provided with a washing tub 2 that can be opened and closed by a door, and an object to be cleaned 3 such as tableware is set in a tableware basket 4 and accommodated in the washing tub 2. The water supply valve 5 supplies cleaning water to the cleaning tank 2. The cleaning pump 6 pressurizes the cleaning water, supplies it to the rotary cleaning means 7 provided with a plurality of injection ports, and cleans the article 3 by spraying the cleaning water from the rotary cleaning means 7. The bottom of the cleaning tank 2 has a drain port 8 that communicates with the suction side of the cleaning pump 6, and the drain port 8 is provided with a residue filter 9 that collects residues removed from the object to be cleaned 3. Yes. A heating element 10 for heating is provided, and a temperature sensor 11 for detecting the temperature of the cleaning tank 2 is provided.

  A water diversion means 13 is installed in the discharge path 12 of the cleaning pump 6, and the discharge path 12 is branched by the water diversion means 13 into a first supply flow path 14 and a second supply flow path 15. As shown in FIG. 2, the path is formed in a double cylindrical shape at the bottom of the cleaning tank 2. The first supply channel 14 communicates with the inside of the double cylindrical channel, and the second supply channel 15 communicates with the outside.

  The second supply flow path 15 is formed in a spiral shape on the outer periphery of the first supply flow path 14, and in FIG. 2, the second supply flow path 15 is inclined in the direction of the rotary cleaning means 7 while rotating to the right.

  The rotary cleaning means 7 is guided by a bearing portion 21 provided in the lower part of the cleaning tank 2 and is configured to be rotatable around the bearing portion 21. The first supply is configured as a double cylinder. The flow path 14 and the second supply flow path 15 are connected to the lower end portion of the bearing portion 21. In the rotary cleaning means 7, a first inflow path 16 that is guided by a bearing portion 21 and supplied with cleaning water from each supply flow path is configured on the inside, and a second inflow path 17 is configured on the outside. Since it is also formed in a double cylindrical shape, cleaning water can be continuously supplied to the rotating rotary cleaning means 7.

  The first inflow channel 16 communicates with the first water channel 19, the second inflow channel 17 communicates with the second water channel 20, and the first water channel 19 and the second water channel 20 have tableware. A plurality of injection ports 18 for injecting cleaning water onto the object 3 to be cleaned are provided. At the time of injection from the first water conduit 19, the rotary cleaning means 7 is a bearing by the injection reaction force of the injection port 18 having an opening inclined at least one substantially opposite direction with respect to the rotation direction of the rotary cleaning means 7. Washing is performed while rotating around the part 21. The injection ports 18 provided in the first water conveyance channel 19 and the second water conveyance channel 20 include the injection ports 18 having different shapes, areas, injection positions, injection directions, angles, and the like.

As shown in FIG. 3, the second inflow passage 17 is provided with the rotation rib 22 so as to form a surface substantially perpendicular to the rotation direction of the rotary cleaning means 7. Here, the hatched portion indicates the opening of the water conduit.

  The water diversion means 13 has a structure shown in FIGS. The casing 25 includes an inflow portion 23 into which cleaning water pressurized by the cleaning pump 6 flows and a plurality of outflow portions 24, and a valve body 26 movably provided in the casing 25. An opening 27 through which the washing water passes is provided. A set of upper engagement portions 28 that rotate the valve body 26 by a predetermined angle when the valve body 26 is raised, and a set of lower engagement portions 29 that rotate the valve body 26 by a predetermined angle when the valve body 26 is lowered. These are respectively installed on the casing 25 side and the valve body 26 side.

  Further, the switching of the outflow portion 24 may be driven by changing the water pressure when the cleaning pump 6 is turned on or off, or may be driven by an actuator such as a motor.

  In the above description, the valve body 26 rotates while operating up and down. However, the valve body 26 may be rotated in advance while maintaining the sealing performance of the connection portion between the valve body 26 and the outflow portion 24. .

  4 and the like are conceptual diagrams. In actuality, the casing 25 has a structure in which the casing 25 is divided into two parts, and is joined by screwing, fitting, welding, welding, or the like. In addition, when the cleaning tank 2 is made of resin, a part of the casing 25 can be formed integrally with the bottom surface of the cleaning tank 2.

  In FIG. 2, four outflow portions 24 are provided, but in this embodiment, the outflow portion A and the outflow portion B are connected to the first supply channel 14, and the outflow portion C and the outflow portion D are It is connected to the second supply channel 15. Between the outflow parts A and B and the outflow parts C and D, there is a partition that completely partitions the flow path, and the cleaning water does not enter each other.

  In the above configuration, first, the basic operation of the dishwasher will be described. An object to be cleaned 3 such as tableware is set in a tableware basket 4 and stored in the washing tub 2, and after the detergent is introduced, the opening of the dishwasher main body 1 is closed with a door or the like, and the operation is started. A cleaning process for removing dirt on the object to be cleaned 3, a rinsing process for flowing the attached detergent and residue, and a drying process for drying the water suitable for the object to be cleaned 3 are performed in this order.

  First, the water supply valve 5 is operated to supply a predetermined amount of cleaning water to the cleaning tank 2, and then the cleaning water is pressurized by the cleaning pump 6, and the cleaning water is jetted from the rotary cleaning means 7. At this time, the heating element 10 such as a sheathed heater provided in the cleaning tank 2 is energized, and the cleaning process is performed while heating the cleaning water. Further, the temperature sensor 11 detects the temperature of the cleaning tank 2 and stops energization of the heating element 10 when the temperature becomes equal to or higher than a predetermined temperature. The circulation of the washing water passes through the residual filter 9, is sucked into the washing pump 6, is supplied from the washing pump 6 to the rotary washing means 7 provided in the washing tank 2, and is supplied from the injection port 18 of the rotary washing means 7. After being sprayed and cleaning the article 3 to be cleaned, it is performed again through the path of returning to the drain port 8. At this time, the residue or the like dropped off from the object to be cleaned 3 flows into the residue filter 9 together with the cleaning water, and the residue having a size that cannot pass through the filter is collected by the residue filter 9.

  When the cleaning process for a predetermined time is completed, the cleaning water containing dirt reverses the motor of the cleaning pump 6, opens the valve, and discharges the cleaning water from the other discharge port to the outside of the main body 1. Further, a drainage pump may be provided separately from the cleaning pump 6 to drain the water. The washing water is discharged out of the main body 1 by the drain pump 6 or the like, and new washing water is supplied. The washing pump 6 is operated, and the washing water is sprayed again from the rotary washing means 7 to rinse the article 3 to be washed, such as detergent and leftovers. After the operation for a predetermined time, the operation of discharging the cleaning water and supplying the cleaning water again is repeated, and this rinsing process is continuously performed about three times. Finally, the washing water is discharged out of the dishwasher body 1 and the rinsing process is completed. Subsequently, a drying process is performed for a predetermined time, and the operation is terminated.

  Next, operations and actions of the rotary cleaning means 7 and the water diversion means 13 which are characteristic configurations of the present embodiment will be described. As shown in the cross-sectional view of FIG. 4, the casing 25 has a substantially cylindrical shape, and the axial direction of the central axis is arranged in a substantially vertical direction so that the cleaning water flows from the cleaning pump 6. The inflow portion 23 is installed at the lower end of the casing 25, and the outflow portion 24 through which the branched washing water flows out is installed on the upper surface of the casing 25. As shown in FIG. 6, four outflow portions 24 are installed, and the water dividing means 13 is branched into four places, but the two outflow portions 24 are connected to one supply flow path.

  The valve body 26 has a substantially planar shape, and the surface A between the outflow portion 24 and the valve body 26 also has a planar shape. When the cleaning pump 6 is operated, the valve body 26 rises by an operation accompanied by substantially linear motion and rotation according to the inclination of the upper engaging portion 28 due to the pressure of the cleaning water flowing in from the inflow portion 23, and a predetermined outflow portion. Is fixed at such a position that it opens (FIG. 6), and cleaning water is supplied to a supply flow path that communicates with the outflow portion. When viewed from directly above the valve body 26, as shown in FIG. 6, the upper engagement portion 28 is arranged so that the opening 27 provided at the position where the washing water passes through the valve body 26 coincides with the predetermined outflow portion. It is set.

  The upper engaging portion 28 has a shape inclined in the rotational direction, and therefore the valve body 26 rises while rotating. Subsequently, once the washing pump 6 is stopped, the pressure that has pushed up the valve body 26 from below does not act, so the valve body 26 is lowered by its own weight, but at this time, according to the inclination of the lower engaging portion 29. It descends while rotating and stops at a predetermined position. The lower engaging portion 29 is also inclined in the rotational direction. When the washing pump 6 is operated again, the upper engagement portion 28 is engaged with the next inclination, the valve body 26 is raised while rotating, and is communicated with the next outflow portion. Thus, by operating the cleaning pump 6 intermittently, it is possible to sequentially switch the outflow part from which the cleaning water flows out.

  In FIG. 2, since the outflow part A and the outflow part B are connected to the first supply channel 14 and the outflow part C and the outflow unit D are connected to the second supply channel 15, respectively, By switching 13, the path switching is repeated in the order of the first supply channel 14, the first supply channel 14, the second supply channel 15, and the second supply channel 15.

  The engagement portion is not limited to this configuration, and when the cleaning pump 6 is intermittently operated, the predetermined outlet portion 24 and the opening 27 of the valve body 26 are provided during the operation of the cleaning pump 6. For example, it may be configured such that it hardly rotates when the valve body 26 is lowered and rotates about 90 degrees when it rises, or conversely rotates about 90 degrees when it descends and hardly rotates when it rises.

  Moreover, in this Embodiment, although the water distribution means 13 was made into 4 branches, it cannot be overemphasized that the same effect is acquired even if it is 2 branches. In this case, the rotary cleaning means 7 repeats forward rotation and reverse rotation alternately every time it is switched.

  Since the two supply flow paths are connected to the rotary cleaning means 7 below the cleaning tank 2, the first inflow path 16 and the first inflow path in FIG. Wash water flows in the order of the path 16, the second inflow path 17, and the second inflow path 17. The wash water that has flowed into the first inflow path 16 is sent to the first water guide path 19, and the wash water is sprayed from the injection port 18 onto an object to be cleaned such as tableware. At this time, the rotary cleaning means 7 is rotated by the injection reaction force.

On the other hand, the wash water flowing into the second inflow path 17 flows in while changing the flow into a spiral shape due to the shape of the second supply flow path 15. At this time, the rotation rib 22 provided in the second inflow passage 17 receives the water pressure of the cleaning water in the rotation direction of the rotary cleaning means 7, and the rotary cleaning means 7 rotates. Therefore, the injection port 18 provided in the second water conduit 20 does not need an injection port for rotation propulsion, and all the injection ports 18 can be effectively injected to the object to be cleaned 3 such as tableware.

  As shown in FIG. 3, each water conduit is branched into two and formed at point-symmetrical positions on both the left and right sides of the rotation center of the rotary cleaning means 7. In preparation for the arrangement of the article 3 to be cleaned, the injection ports 18 of various angles, directions and sizes are provided.

  Further, the rotation direction of the rotary cleaning means 7 may be changed when the cleaning water flows through the first water conduit 19 and when the cleaning water flows through the second water conduit 20. By changing the rotation direction, the angle of the cleaning water sprayed from the spray port 18 is changed, and the penetration into the cleaning object 3 such as tableware is improved.

  Further, when the cleaning water is jetted from the jet port of the second water guide channel 19, there is no jet port having a large angle. There are fewer things to do. Therefore, it also serves as a noise countermeasure.

  In addition, since the washing water can be efficiently sprayed on the tableware or the like, the detergent or the residue attached to the tableware or the like can be rinsed in a short time, and the number of times of rinsing can be reduced. For example, it is possible to reduce what was rinsed in four steps to three steps. Since the number of times of rinsing can be reduced without increasing the amount of water supplied at one time, the heating time of the washing water using a heater can also be shortened. Therefore, energy saving and water saving amount can also be realized.

  Further, when the number of the injection ports 18 is increased, the amount of water to be injected is increased, so that the flow rate circulating through the main body is increased. Therefore, the water level during rinsing and rinsing decreases and the pump generates air. For this reason, it is necessary to increase the amount of water supply and keep the water level high, but in the present invention, since the injection port 18 is switched by the water diversion means 13, the number of the injection ports 18 is increased without increasing the water supply amount. It is possible to adopt a cleaning method in which cleaning water is sprayed from multiple directions while saving water on an object to be cleaned 3 such as tableware.

  Accordingly, there is no need for a propelling injection port for rotating the rotary cleaning means 7, and all the injection ports 18 can be directed to the object to be cleaned 3 such as tableware, and the cleaning performance can be improved.

  It should be noted that if the time of spraying from the rotary cleaning means 7 through one water conduit is switched from several seconds to about 3 minutes, efficient cleaning can be performed, but at least during one cleaning or rinsing process, It is desirable to set so that it is injected from all the injection ports 18 at one time. Therefore, it may be set to about 10 seconds to 1 minute.

  Further, as shown in FIG. 7, the rotation rib 22 may be configured by the first inflow path 16. By inclining the first inflow path 16 toward the second inflow path 17 and communicating with the first water guide path 19, the wash water flowing spirally into the second inflow path 17 is provided. The water pressure can be received by the first inflow passage 16. While the second inflow path is simplified, the first inflow path also extends toward the second inflow path, and the flow of the washing water becomes smooth. Therefore, it can wash | clean efficiently. An effect equivalent to that of the rotating rib 22 can be obtained.

  Moreover, since the rotation rib 22 is configured to be provided up to the lower end surfaces of the first inflow passage 16 and the second inflow passage 17, the force received in the rotational direction from the spiral flow increases, so that the washing water Even if detergent or dirt is mixed, the rotation of the rotary cleaning means 7 is stabilized. Accordingly, the cleaning performance can be maintained efficiently and stably.

  Further, the rotation rib 22 has a configuration in which the width increases upward, so that the cleaning water flowing through the second inflow passage 17 applies the cleaning pressure in the rotation direction while minimizing the flow path pressure loss. Since it can receive, the energy of washing water can be efficiently given to to-be-washed objects 3, such as tableware.

  Further, the rotation rib 22 is configured to be point-symmetric with respect to the center of the rotation cleaning means 7, and by providing the rotation rib 22 at a point-symmetric position with respect to the rotation center, Can be balanced. As a result, the cleaning performance is deteriorated due to water leakage from the connecting portion between the rotating cleaning means 7 and the second supply flow path 15 due to the rotation of the rotating cleaning means 7 while being inclined, and local wear of the connecting portion is caused. Generation | occurrence | production of rotation failure etc. can be suppressed.

  Further, as shown in FIG. 8, the second supply channel 15 is configured to pass at least once in a spiral shape by passing over the first supply channel 14 below the rotary cleaning means 7. As a result, the cleaning water is uniformly sent to the second inflow path 17. Accordingly, the rotational speed of the rotary cleaning means 7 is constant at any position, and water pressure can be uniformly applied to the rotary cleaning means 7 in the upward direction, so that the rotary cleaning means 7 prevents inclination due to unbalance. It will be. Thereby, it can wash | clean efficiently the to-be-washed | cleaned objects 3, such as the tableware put in any position of the tableware basket 4. FIG.

  As shown in FIG. 9, the second supply channel 15 is configured by forming a rectifying rib 30 provided with a surface substantially perpendicular to the direction in which the cleaning water flows at the end of the path, and is configured in a spiral shape. This prevents the loss of energy due to the crossing of the washing water at the inlet and the outlet of the second supply flow path 15 and can efficiently wash the article 3 to be cleaned such as tableware.

  As shown in FIG. 10, the rotary cleaning means 7 has a tower nozzle 31 having at least one injection port 18 that is substantially conical and extends upward at a substantially central portion thereof, and a water conduit in the tower nozzle 31. Is configured to communicate with the second supply flow path 15, and the rotary cleaning means 7 can rotate even when only the tower nozzle 31 having no rotation propulsion injection port is injected. By switching the injection port 18 by the water means 13, it is possible to inject high-pressure cleaning water over the entire cleaning tank 2. Therefore, the article 3 to be cleaned such as tableware can be efficiently cleaned.

  The present invention relates to a washing method for a dishwasher, and does not limit the shape and size of the dishwasher main body 1, the door opening / closing method, the arrangement of dishes, the arrangement of individual components, and the like. Moreover, although the example of the dishwasher which has a drying function was shown in Embodiment 1, the same effect is acquired also in the dishwasher which does not accompany a drying function.

  As described above, the dishwasher according to the present invention can improve the washing performance without increasing the amount of detergent and the jetting energy, and thus can be applied to washing machines other than tableware.

6 Washing pump 7 Rotating cleaning means 9 Residual filter 12 Discharge path 13 Dividing means 14 First supply flow path 15 Second supply flow path 16 First inflow path 17 Second inflow path 18 Injecting port 19 1 20 Water guide channel 20 Second water guide channel 21 Bearing portion 22 Rotating rib 30 Rectifying rib 31 Tower nozzle

Claims (8)

A washing tank for storing objects to be washed such as tableware, a washing pump for pressurizing washing water, an inner first inflow passage formed in a substantially double cylindrical shape into which washing water flows, and an outer second An inflow channel, a plurality of injection ports are provided, and includes a first water conduit that communicates with the first inflow channel and a second water conduit that communicates with the second inflow channel. Rotating cleaning means for injecting cleaning water from the mouth, and a rotating rib provided on the second inflow path so as to form a surface substantially perpendicular to the rotation direction of the rotating cleaning means, and selected as the inflow path A water supply means having a first supply flow path and a second supply flow path for supplying cleaning water, and the first supply flow path and the second supply flow path are inflows of the rotary cleaning means. The tableware is formed in a substantially double cylindrical shape below the passage, and the second supply channel outside the first supply channel inside is formed in a spiral shape. There machine. The dishwasher according to claim 1, wherein the rotating rib is configured by the first inflow path. The dishwasher according to claim 1, wherein the rotating rib is provided up to a lower end surface of the first inflow path and the second inflow path. The dishwasher according to any one of claims 1 to 3, wherein the rotation rib has a configuration in which a width increases upward. The dishwasher according to any one of claims 1 to 4, wherein the rotation rib is configured to be point-symmetric with respect to a rotation center of the rotation cleaning means. 6. The structure according to claim 1, wherein the second supply flow path is configured to pass at least once in a spiral shape by passing over the first supply flow path below the rotary cleaning unit. Dishwasher according to item. The dishwasher according to claim 6, wherein the second supply channel is configured with a rib provided with a surface substantially perpendicular to a direction in which the washing water flows at a rearmost part of the channel. The rotary cleaning means has a tower nozzle having at least one injection port extending upward in a substantially conical shape at a substantially central portion thereof, and the water conduit in the tower nozzle is connected to the second supply channel. The dishwasher according to any one of claims 1 to 7, wherein the dishwasher is configured to communicate with each other.

Images