WO2018179785A1 - Dishwasher - Google Patents

Abstract

The present invention comprises: a dish basket in which objects to be washed are placed; a washing tank in which the dish basket is accommodated; a washing pump that pressure-feeds a washing water; and a washing nozzle (7) that ejects the washing water. The washing nozzle (7) includes: a rotation shaft (16) into which the washing water flows; a plurality of tower flow passages (21), each having a tower ejection port (23); and a water separating mechanism (20) that switches the supply of the washing water to the plurality of tower flow passages (21). The water separating mechanism (20) is disposed above the rotation shaft (16). Due to this configuration, it is not necessary to dispose at a high position the dish basket that is provided in the washing tank. Therefore, a dishwasher with which high washing performance is achieved while maintaining the capacity of objects to be washed such as dishes can be provided.

Description

dishwasher

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

A conventional dishwasher has a configuration as shown in FIGS. 13 to 15 (see, for example, Patent Document 1). Hereinafter, the structure of the conventional dishwasher described in Patent Document 1 will be described with reference to FIGS. 13 to 15. FIG. 13 is a longitudinal sectional view of a main part of a conventional dishwasher. FIG. 14 is a perspective plan view in which a part of a washing nozzle of a conventional dishwasher is cut away. FIG. 15 is a perspective view of a valve body of a washing nozzle of a conventional dishwasher.

As shown in FIGS. 13 and 14, the dishwasher includes a dish basket 51, a washing tank 52, a washing pump 53, a washing nozzle 54, and the like. The tableware basket 51 stores tableware that is an object to be cleaned. In the washing tank 52, the tableware basket 51 is placed. The cleaning pump 53 pumps cleaning water. The cleaning nozzle 54 is disposed near the bottom surface of the cleaning tank 52. The cleaning nozzle 54 sprays the pumped cleaning water toward the dishes while rotating.

The cleaning nozzle 54 includes an arm portion 55, a rotation shaft 56, and a tower nozzle 57. The arm portion 55 is provided in the horizontal direction and has a plurality of injection ports 54a and 54b on the upper surface. The rotation shaft 56 is provided at the center of the lower surface of the arm portion 55. The tower nozzle 57 is provided on the upper surface at a position facing the rotation shaft 56, extends upward, and has an injection port at the tip.

The arm portion 55 and the tower nozzle 57 each have a plurality of flow paths that respectively communicate with the injection ports. The rotating shaft 56 includes a water diversion mechanism 58 inside. The water diversion mechanism 58 includes a valve body 59 and an engaging portion 60. The water diversion mechanism 58 distributes wash water to a plurality of flow paths provided in the arm portion 55 and the tower nozzle 57. The valve body 59 moves up and down by the pressure of the washing water. The engaging part 60 rotates the valve body 59 by a predetermined angle as the valve body 59 moves up and down. As shown in FIG. 15, the valve body 59 includes two fan-shaped opening portions 59 a and two closing portions 59 b each having a central angle of 90 degrees. That is, on the connection surface between the arm portion 55 and the rotating shaft 56, the inlet portions 55a and 55b of a plurality of flow paths provided in a fan shape with a central angle of 90 degrees are arranged in four portions.

As described above, the conventional dishwasher is configured and operates as follows.

First, the dishwasher sucks the washing water through the washing pump 53 and jets it from the washing nozzle 54. The dishes are washed by the sprayed washing water. Thereafter, the cleaning water is again sucked by the cleaning pump 53 and sprayed from the cleaning nozzle 54. In other words, dishes and the like are washed by the circulation operation. At this time, the wash water pumped by the wash pump 53 flows into the rotating shaft 56 and operates the water diversion mechanism 58 as follows.

Specifically, first, the valve body 59 rises due to the water pressure of the wash water flowing into the water diversion mechanism 58 from below. As for the valve body 59 that has risen, the opening 59a and the closing portion 59b coincide with the two inlet portions 55a and 55b that are located diagonally out of the four inlet portions. As a result, the washing water flows into the two flow paths in the arm portion 55 from the two inlet portions 55a that coincide with the opening portion 59a of the valve body 59, as indicated by a solid arrow A in FIG.

Next, as shown by the solid arrow B in FIG. 14, the wash water that has flowed into the arm portion 55 is jetted from the jet ports 54 a provided in the respective flow paths of the arm portion 55. At this time, the arm part 55 rotates by the reaction force of the washing water injected from the injection port 54a. And the tableware in the tableware basket 51 is wash | cleaned with the wash water sprayed. At this time, in synchronization with the rotation of the arm portion 55, the water diversion mechanism 58 in the rotation shaft 56 also rotates.

The cleaning pump 53 is temporarily stopped when driven for a predetermined time. As a result, the valve body 59 is not subjected to the water pressure of the washing water, and therefore descends along the rotation shaft 56 and comes into contact with the engaging portion 60. The valve body 59 rotates 90 degrees along the inclination of the engaging portion 60.

Next, when the cleaning pump 53 is driven again, the valve body 59 rises due to water pressure. As for the valve body 59 which rose, the opening part 59a and the closing part 59b each correspond so that it may differ 90 degree | times from the last with respect to several inlet part 55a, 55b. Accordingly, the wash water flows into the two flow paths in the arm portion 55 from the two inlet portions 55b as shown by the broken line arrow C in FIG. 14, and is injected from the injection port 54b as shown by the broken line arrow D. Is done.

That is, in the conventional dishwasher, the water diversion mechanism itself rotates in synchronization with the rotation of the washing nozzle. Then, the flow path in the cleaning nozzle through which the cleaning water flows is switched. Thereby, washing water is sprayed in a wide range from the washing nozzle and the tower nozzle while saving water. As a result, the dishes are washed evenly by the washing water sprayed while rotating.

However, in the conventional dishwasher, the water diversion mechanism is disposed in the rotating shaft located below the washing nozzle. For this reason, the diameter and vertical dimension of the rotating shaft increase. Furthermore, it is necessary to increase the size of the bearing portion fitted to the rotating shaft in accordance with the size of the rotating shaft.

Usually, the bearing part of the dishwasher is provided at the bottom of the washing tank. Thereby, since the vertical dimension becomes large at the bottom of the cleaning tank, the cleaning nozzle is disposed at a position higher than the conventional position. Therefore, the tableware basket is also arranged at a high position, and the amount of objects to be cleaned and the like is reduced due to the reduction of the tableware storage space in the cleaning tank. Furthermore, the maximum size of tableware that can be accommodated is reduced (limited).

JP 2010-194138 A

The present invention provides a dishwasher in which a water diversion mechanism is disposed above a rotation axis so that a large amount of tableware can be accommodated and water can be stored and the dishes can be washed reliably.

The dishwasher of the present invention includes a dish basket on which an object to be washed is placed, a washing tank in which the dish basket is accommodated, a washing pump that pumps washing water, and a washing that is rotatably supported and jets washing water. A nozzle is provided. The cleaning nozzle has a rotating shaft, a plurality of flow paths having injection ports, and a water diversion mechanism that switches supply of cleaning water to the plurality of flow paths. The water diversion mechanism is configured to be disposed above the rotation axis.

According to this configuration, it is not necessary to increase the rotation axis of the cleaning nozzle in the vertical direction. Similarly, there is no need to increase the size of the bearing portion fitted to the rotating shaft. Therefore, it is not necessary to arrange the tableware basket provided in the washing tank at a high position. Thereby, the amount of objects to be cleaned such as tableware stored in the tableware basket can be increased. As a result, the tableware can be reliably washed while accommodating more objects to be washed in the tableware basket and saving water.

FIG. 1 is a side sectional view of the dishwasher according to Embodiment 1 of the present invention. FIG. 2 is a plan view of a washing nozzle of the dishwasher in the same embodiment. FIG. 3 is a side sectional view of the washing nozzle of the dishwasher in the same embodiment. FIG. 4 is a perspective sectional view of an essential part of a washing nozzle of the dishwasher in the same embodiment. FIG. 5 is a perspective view of a main part of a washing nozzle of the dishwasher in the same embodiment. FIG. 6 is a perspective view of the valve body of the washing nozzle of the dishwasher in the same embodiment. FIG. 7 is a side view of the valve body of the dishwasher in the same embodiment. FIG. 8 is a top view of the valve body of the dishwasher in the same embodiment. FIG. 9 is a bottom view of the valve body of the dishwasher in the same embodiment. FIG. 10 is a side sectional view of the vicinity of the valve body of the dishwasher in the same embodiment. FIG. 11: is a figure which shows the front cross section of the dishwasher in Embodiment 2 of this invention. FIG. 12 is a front sectional view of the dishwasher in the same embodiment. FIG. 13 is a longitudinal sectional view of a main part of a conventional dishwasher. FIG. 14 is a perspective plan view in which a part of a washing nozzle of a conventional dishwasher is cut away. FIG. 15 is a perspective view of a valve body of a washing nozzle of a conventional dishwasher.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the present embodiment.

(Embodiment 1)
FIG. 1 is a side sectional view of the dishwasher according to Embodiment 1 of the present invention. FIG. 1 shows a state in which the dishwasher is built in the system kitchen SK.

As shown in FIG. 1, the dishwasher of the present embodiment includes a main body 1, a washing tank 2, a washing pump 6, a water supply valve 10, a door 1a, and the like.

In the following embodiments, as shown in the figure, the front direction is described as the direction in which the door 1a and the cleaning tank 2 are pulled out, and the rear direction is described as the direction in which the cleaning tank 2 is stored and the door 1a is closed. . Further, the dishwasher installation side will be referred to as the lower side, the opposite side as the upper side, and the right side toward the front of the door 1a will be described as the right side and the left side as the left side.

Specifically, the cleaning tank 2 includes a table basket 4, a cleaning nozzle 7, a residual filter 8 a, a drain port 8, and the like. The cleaning tank 2 is provided inside the main body 1 so that it can be taken in and out in the front-rear direction. The cleaning tank 2 has an opening 2a on the upper surface. When the opening 2 a is accommodated in the main body 1, the opening 2 a is closed by a lid 3 disposed in the main body 1. In the tableware basket 4, an object to be cleaned 5 such as tableware is placed. The door 1 a is provided in the front part of the cleaning tank 2 and covers the front surface of the main body 1.

The water supply valve 10 is provided in the rear part inside the main body 1. The water supply valve 10 supplies, for example, tap water that becomes cleaning water to the cleaning tank 2 when opened.

The cleaning pump 6 is provided on the bottom surface in the main body 1 and the cleaning nozzle 7 is provided on the bottom surface side in the cleaning tank 2. The cleaning pump 6 pumps cleaning water to the cleaning nozzle 7. The cleaning nozzle 7 injects cleaning water toward the object to be cleaned 5 such as tableware while rotating by the pumped cleaning water. That is, the cleaning pump 6 pressurizes the cleaning water stored in the cleaning tank 2 and supplies it to the cleaning nozzle 7. The cleaning water sprayed from the cleaning nozzle 7 collides with an object to be cleaned 5 such as tableware and performs cleaning. The cleaning water includes a cleaning liquid that includes a detergent and is sprayed onto the object 5 to be cleaned, and rinse water for rinsing the object 5 to be cleaned.

The drain 8 and the heater 9 are provided at the bottom of the cleaning tank 2. The residue filter 8a is detachably provided in the drain port 8 and collects residue that has been cleaned and removed from the object 5 to be cleaned. The heater 9 heats the washing water stored in the washing tank 2 in the washing step. The heater 9 heats the drying air in the cleaning tank 2 in the drying step. Furthermore, the temperature sensor 11 is disposed outside the bottom surface of the cleaning tank 2 and detects the temperature of the cleaning tank 2.

The cleaning pump 6 is connected to the drain port 8 on the suction side, and circulates the cleaning water from which the residue is removed by the residue filter 8a. Further, the cleaning pump 6 is configured to be able to drain the cleaning water from which the residue is removed by reversing the rotation direction of the motor during circulation.

As described above, the dishwasher of the present embodiment is configured.

Next, the configuration of the cleaning nozzle 7 will be described in detail with reference to FIGS. FIG. 2 is a plan view of a washing nozzle of the dishwasher in the same embodiment. FIG. 3 is a side sectional view of the cleaning nozzle in the same embodiment.

The cleaning nozzle 7 includes an arm portion 12 that rotates in the horizontal direction and a tower portion 13. The tower portion 13 is disposed in a central portion corresponding to the rotation center of the arm portion 12 so as to protrude upward.

The arm unit 12 includes a first arm nozzle 14 and a second arm nozzle 15 having an arm channel and an injection port, which are examples of channels. The first arm nozzle 14 includes a rotation shaft 16 on the lower surface of the central portion. A rotary bearing (not shown) arranged corresponding to the rotary shaft 16 is provided near the center of the bottom of the cleaning tank 2. The rotary shaft 16 of the first arm nozzle 14 is fitted to a rotary bearing. Thereby, the arm part 12 is attached to a rotary bearing so that attachment or detachment and rotation are possible.

Further, the rotating shaft 16 includes a shaft opening 16 a that communicates with the discharge side of the cleaning pump 6. That is, when the cleaning pump 6 is driven by a motor (not shown), cleaning water is supplied from the shaft opening 16 a of the rotating shaft 16 to the first arm nozzle 14.

The second arm nozzle 15 is rotatably provided on the upper surface of one end portion of the first arm nozzle 14 extending in the horizontal direction via the second rotating shaft 15a. That is, the second rotating shaft 15 a of the second arm nozzle 15 is fitted into the communication portion 14 a provided on the upper portion of the first arm nozzle 14. Thereby, the 2nd arm nozzle 15 is attached to the 1st arm nozzle 14 so that attachment or detachment is possible.

The first arm nozzle 14 includes one or more first injection ports 17 on the upper surface, which are examples of injection ports. As shown in FIG. 2, the first injection port 17 is formed in a shape (for example, a circle, an ellipse, a semicircle, a square, a triangle, a star, etc.) having different opening shapes. The 1st arm nozzle 14 contains the 1st arm channel 14b which is an illustration of an arm channel inside. The first arm channel 14 b is provided so as to communicate from the rotating shaft 16 to the first injection port 17. Thereby, the wash water pumped by the wash pump 6 reaches the first injection port 17 from the shaft opening 16a via the first arm flow path 14b. The reached cleaning water is sprayed over a wide area in the cleaning tank 2 from the first spray ports 17 having different opening shapes. At this time, the first arm nozzle 14 rotates in the direction opposite to the injection direction by the reaction force of the washing water jetted from the first jet port 17.

The second arm nozzle 15 includes a plurality of second injection ports 18 exemplifying the injection ports having the same opening shape (for example, a rectangle) on the upper surface. The plurality of second injection ports 18 are arranged point-symmetrically with respect to the second rotation shaft 15a including the opening shape. The second arm nozzle 15 includes therein a second arm channel 15b that is an example of an arm channel. The second arm channel 15b is provided so as to communicate from the second rotating shaft 15a to the second injection port 18. As a result, the cleaning water pumped by the cleaning pump 6 reaches the second injection port 18 from the shaft opening 16a via the first arm channel 14b and the second arm channel 15b. The reached cleaning water is sprayed over a wide area in the cleaning tank 2 from the second spray ports 18 arranged symmetrically. At this time, the second injection ports 18 that are arranged point-symmetrically generate the same injection reaction force in the same rotational direction. As a result, the second arm nozzle 15 rotates in the direction opposite to the injection direction. That is, the second arm nozzle 15 rotates while revolving by the rotation of the first arm nozzle 14.

On the other hand, the tower portion 13 is provided so as to protrude upward from the upper surface of the first arm nozzle 14 at a position facing the rotation shaft 16 provided on the lower surface of the first arm nozzle 14. The tower portion 13 includes a tower nozzle 19 at the top. The tower nozzle 19 includes an ejection port portion 19a and a flow channel portion 19b that can be attached and detached. In the present embodiment, the injection port portion 19a of the tower nozzle 19 includes, for example, three tower injection ports 23, which are examples of injection ports.

Moreover, the tower part 13 is provided with a water diversion mechanism 20 at the bottom. That is, the water diversion mechanism 20 of the present embodiment is disposed above the upper surfaces of the rotating shaft 16 and the first arm nozzle 14.

The inside of the flow path portion 19b of the tower nozzle 19 is divided into four, and four tower flow paths 21 are formed in the vertical direction (vertical direction). At this time, the same tower channel 21 is formed in the injection port 19a so as to communicate with the tower channel 21 of the channel 19b. As shown in FIG. 3, the four tower channels 21 include a first tower channel 21a, a second tower channel (not shown), a third tower channel 21c, and a fourth tower channel (not shown). ). Each tower channel 21 has a fan-shaped opening 22 having a central angle of, for example, 90 degrees on the lower surface of the water diversion mechanism 20 (downward). On the other hand, three tower injection ports 23 are formed at the upper ends of the tower flow paths 21 of the injection port portion 19a.

Of the four tower channels 21, the first tower channel 21a, the second tower channel (not shown), and the third tower channel 21c are formed at the respective tips of the injection port portion 19a. The three tower injection ports 23 communicate with each other. That is, the three tower injection ports 23 specifically include a first tower injection port 23a, a second tower injection port 23b, and a third tower injection port 23c. As shown in FIG. 2, the first tower injection port 23a, the second tower injection port 23b, and the third tower injection port 23c are formed in different opening shapes. Accordingly, the wash water is jetted in different directions in different directions from the tower jet ports 23 having different opening shapes. As a result, the cleaning water is uniformly sprayed on the tableware and the like on the upper part of the cleaning tank 2.

The fourth tower channel (not shown) is formed with its tip closed. That is, in the fourth tower channel, a tower injection port for injecting the cleaning water to the injection port portion 19a is not formed. Thereby, as will be described later, it is possible to generate a timing at which the cleaning water is not jetted in time.

As described above, the washing nozzle 7 of the dishwasher according to the present embodiment is configured.

Next, the water diversion mechanism 20 will be described with reference to FIG. 3 and FIG. 4 and FIG.

FIG. 4 is a cross-sectional perspective view of the main part of the cleaning nozzle 7 according to the embodiment as viewed from above. Specifically, it is a cross-sectional perspective view of the lower portion of the tower section 13 and the rotating shaft 16 as viewed from above. FIG. 5 is a perspective view of the main part of the cleaning nozzle 7 according to the embodiment as viewed from below. Specifically, it is the perspective view which looked at the upper part of the tower part 13, and the valve body 24 of the water distribution mechanism 20 mentioned later from the downward direction.

The water diversion mechanism 20 is provided above the rotation shaft 16 of the first arm nozzle 14 with the rotation center on the extension line of the rotation shaft 16 as the same axis.

3 and 4, the water diversion mechanism 20 includes an outer wall 20a and an inner wall 20b. At this time, the height of the inner wall 20b is formed to be lower than the height of the outer wall 20a. The inner wall 20b includes a plurality of ribs 20c on the inner surface. Four ribs 20c are provided diagonally at intervals of 90 degrees in the circumferential direction in the circumferential direction. Since FIG. 4 shows a cross section, only three ribs 20c are shown. The rib 20c is formed to the same height as the upper surface of the inner wall 20b. As a result, a water diversion space 20d surrounded by the outer wall 20a is formed above the inner wall 20b and the rib 20c.

Further, the water diversion mechanism 20 includes a valve body 24 as shown in FIG. The valve body 24 moves up and down in the water diversion space 20d. Specifically, when washing water flows from the shaft opening 16a of the rotating shaft 16, the valve body 24 rises due to water pressure. On the other hand, when the inflow of the washing water stops, the valve body 24 descends so as to contact the upper surface of the inner wall 20b. At this time, as shown in FIG. 3, the valve body 24 is supported (guided) by the support shaft 28 provided at the center of the tower nozzle 19 so as to protrude into the water diversion space 20 d.

That is, the water diversion mechanism 20 includes the first tower passage 21a and the second tower that communicate with the first tower injection port 23a, the second tower injection port 23b, and the third tower injection port 23c formed at the tip of the tower nozzle 19. The flow path (not shown) and the opening 22 of the third tower flow path 21c are switched by the rotational movement of the valve body 24 to open and close. Thereby, wash water is jetted in order from the first tower jet port 23a, the second tower jet port 23b, and the third tower jet port 23c.

On the other hand, in the fourth tower channel (not shown), the tip end side of the tower nozzle 19 is closed as described above. Therefore, even if the opening 22 of the fourth tower channel communicates with the flow part 27 of the valve body 24 and is opened, the cleaning water is not injected into the cleaning tank 2. Thereby, the timing at which cleaning water is not jetted in time can be generated.

As described above, the water diversion mechanism 20 of the dishwasher according to the present embodiment is configured.

Next, the shape of the valve body 24 will be described with reference to FIGS. 6 to 10 with reference to FIG. FIG. 6 is a perspective view of the valve body of the cleaning nozzle according to the embodiment as viewed from above. FIG. 7 is a side view of the valve body. FIG. 8 is a top view of the valve body. FIG. 9 is a bottom view of the valve body. FIG. 10 is a side sectional view of the vicinity of the valve body.

As shown in FIG. 6, the valve body 24 includes a disk part 25, a hollow cylindrical part 26, an upper surface engaging part 30, a lower surface engaging part 31, and the like. The disk part 25 includes a circulation part 27 through which the washing water passes. The circulation part 27 is formed by cutting out a part of the disk part 25. The circulation part 27 communicates sequentially with the respective openings 22 of the four tower channels 21 by the rotation accompanying the vertical movement of the valve body 24. The hollow cylindrical portion 26 is provided in the center of the disk portion 25 and is formed in a hollow shape.

As shown in FIGS. 3 and 10, the valve body 24 is disposed so that the support shaft 28 protruding from the tower portion 13 is inserted into the hollow cylindrical portion 26. As a result, the valve body 24 is guided by the support shaft 28 and stably moves up and down along the support shaft 28.

The disc part 25 of the valve body 24 is composed of two layers, an upper buffer part 25a formed separately and a lower body 25b. The buffer portion 25a of the disk portion 25 is formed of an elastic material such as rubber, for example. The buffer portion 25a alleviates the impact at the time of collision between the valve body 24 moved upward and the lower surface of the tower nozzle 19. Thereby, generation | occurrence | production of the noise etc. accompanying a collision is suppressed.

As described above, the valve body 24 has an upwardly convex upper surface engaging portion 30 disposed on the upper surface side of the disk portion 25 and a downwardly convex surface disposed on the lower surface side, as shown in FIGS. The lower surface engaging portion 31 has a shape.

The upper surface engaging portion 30 is formed in four arc shapes having a central angle of, for example, 90 degrees and a thickness in the radial direction. Each of the arcuate upper surface engaging portions 30 includes an inclined surface 30a and a vertical surface 30b along the circumference. The four upper surface engaging parts 30 of the same shape are connected and arranged so as to be continuous along the circumference. At this time, the inclined surface 30a is formed so as to be inclined downward (upper surface of the disk portion 25), for example, counterclockwise as viewed from above.

On the other hand, the lower surface engaging portion 31 is formed on the lower surface side of the main body 25b of the disk portion 25 as shown in FIGS. The lower surface engaging portion 31 is formed in a deformed pentagon made up of two inclined surfaces 31a inclined in different directions along the circumference, two vertical surfaces 31b at both ends, and a bottom surface of the disk portion 25 on the main body 25b side. Is done. The two inclined surfaces 31a are formed in a mountain shape so as to protrude from the vertical surfaces 31b at both ends in the circumferential direction. As shown in FIG. 9, the lower surface engaging portions 31 are arranged at equal intervals with gaps L of a predetermined dimension at three locations of one circumference divided into four at 90 degrees, for example. The A circulation part 27 in which the disk part 25 is cut out is formed in the remaining one part of the circumference divided into four equal parts.

Further, as shown in FIG. 10, an upper sliding portion 32 is formed at the base 28 a of the support shaft 28 of the tower portion 13. The upper sliding portion 32 slides the inclined surface 30 a of the upper surface engaging portion 30 of the valve body 24.

On the other hand, as shown in FIG. 4, for example, a semi-cylindrical lower sliding portion 33 is formed at the upper end of the rib 20c. In the lower sliding portion 33, the inclined surface 31a of the lower surface engaging portion 31 of the valve body 24 slides. At this time, the gap L between the lower surface engaging portions 31 of the valve body 24 is set to a dimension that allows the lower sliding portion 33 provided on the rib 20c to smoothly enter and exit. Thereby, the valve body 24 moving up and down rotates while the inclined surface 31a of the lower surface engaging portion 31 slides along the lower sliding portion 33 of the rib 20c. And as for the valve body 24, the clearance gap L between the lower surface engaging parts 31 fits into the rib 20c.

The dimensions and positional relationship between the upper surface engaging portion 30 of the valve body 24 and the upper sliding portion 32 of the support shaft 28, and the dimensions between the lower surface engaging portion 31 of the valve body 24 and the lower sliding portion 33 of the rotating shaft 16. The positional relationship between the upper surface engaging portion 30 and the lower surface engaging portion 31 of the valve body 24 is configured as follows. That is, the valve body 24 rotates 90 degrees in the circumferential direction every time it reciprocates in the vertical direction. Therefore, the dimensions and the positional relationship are set so that the circulation part 27 of the valve body 24 and the respective opening parts 22 of the four tower channels 21 are sequentially matched each time it rotates 90 degrees.

As described above, the valve body 24 of the dishwasher according to the present embodiment is configured.

Next, the switching operation of the water diversion mechanism 20 by the valve body 24 will be described with reference to FIG.

First, when the cleaning pump 6 is stopped and the cleaning water is not supplied, the valve body 24 comes to rest in a state of being in contact with the upper end surface of the inner wall 20b of the water diversion mechanism 20 and the lower sliding portion 33 of the rib 20c. Yes. At this time, the valve body 24 stops in a state where the lower sliding portion 33 of the rib 20c is fitted in the gap L of the lower surface engaging portion 31 of the valve body 24.

Next, when the user turns on the power and drives the cleaning pump 6, the cleaning water flows into the water distribution mechanism 20 from the shaft opening 16 a of the rotating shaft 16 (see arrow A shown in FIG. 3). At this time, all the washing water that has flowed into the washing nozzle 7 from the shaft opening 16a of the rotating shaft 16 passes through the water diversion space 20d. Accordingly, the washing water applies a large water pressure to the valve body 24 to raise the valve body 24 and rotate the valve body 24. As a result, the valve body 24 that rises while rotating can be reliably switched to the tower flow path 21 that constitutes the flow path supplied to the tower section 13.

The valve body 24 rises along the support shaft 28 of the tower portion 13 by receiving the water pressure of the washing water at the main body 25 b of the disk portion 25. When the valve body 24 is raised by a predetermined dimension, the inclined surface 30a of the upper surface engaging portion 30 of the valve body 24 comes into contact with the upper sliding portion 32 of the support shaft 28 and slides. At this time, the valve body 24 rotates along the inclined surface 30a by a first predetermined angle (for example, 50 degrees).

That is, as shown in FIGS. 5 and 10, the valve body 24 rises while rotating until it contacts the lower surface of the tower nozzle 19 (corresponding to the position of the opening 22). Thereby, the flow part 27 of the valve body 24 and the opening part 22 of the 1st tower flow path 21a are arrange | positioned facing, for example. As a result, the circulation part 27 and the opening part 22 communicate with each other and the first tower channel 21a is opened. At this time, the opening 22 from the second tower flow path to the fourth tower flow path of the tower portion 13 is arranged to face the buffer portion 25a of the disk portion 25 of the valve body 24. Therefore, the opening 22 from the second tower channel to the fourth tower channel is in a closed state.

Accordingly, the wash water flows into the first tower flow path 21a and is jetted from the first tower jet port 23a among the tower jet ports 23 provided in the jet port portion 19a of the tower nozzle 19 (FIG. 3). Arrow B).

Note that most of the washing water that has pushed up the valve body 24 passes through the gap 20e between the outer wall 20a and the inner wall 20b constituting the water diversion mechanism 20 as shown by the arrow C in FIG. It flows into the path 14b.

Next, the cleaning pump 6 stops after being driven for a predetermined time. Thereby, the washing water does not flow into the water diversion mechanism 20. Therefore, the valve body 24 that does not receive the water pressure from the washing water descends by its own weight.

Then, the valve body 24 is lowered by a predetermined dimension. Specifically, the valve body 24 is lowered by the rotation at the time of rising while the inclined surface 31a of the lower surface engaging portion 31 is in contact with and slides on the lower sliding portion 33 of the rib 20c. Thereby, the valve body 24 rotates only by the second predetermined angle (for example, 40 degrees) by the mountain-shaped inclined surface 31a structure. And the valve body 24 descend | falls until it contacts the upper end surface of the inner wall 20b and the lower sliding part 33 of the rib 20c. As a result, the valve body 24 is stopped in a state where it is rotated 90 degrees by one rise and fall. That is, the valve body 24 rotates 40 degrees when lowered and rotates 50 degrees when raised. Therefore, the valve body 24 is arranged in a state in which the flow portion 27 and the opening portion 22 are shifted by 40 degrees in the stationary state after being lowered.

Next, when the cleaning pump 6 is driven again, the valve body 24 rises while rotating by sliding again. Then, only the opening 22 of the next second tower channel communicates with the flow part 27 of the valve body 24, and cleaning water is supplied to the second tower channel.

That is, by intermittent driving of the cleaning pump 6, the valve body 24 is sequentially rotated by 90 degrees. Thereby, the flow path is switched in order of the first tower flow path 21a, the second tower flow path, the third tower flow path 21c, and the fourth tower flow path, which constitute the tower flow path 21, and the washing water flows. Flowing. As a result, wash water is jetted from the first tower jet 23a, the second tower jet 23b, and the third tower jet 23c that constitute the tower jets 23 of the respective tower channels 21. At this time, as described above, the fourth tower flow path is not formed with a tower injection port, so that no washing water is injected. Thereby, the timing which is temporally different can be provided with respect to the injection of the washing water.

Then, when the valve body 24 reciprocates up and down four times, it rotates 360 degrees and returns to its original position. This state is repeated every four times, and the washing water is jetted.

The cleaning water supplied to the arm portion 12 of the cleaning nozzle 7 is supplied to the first arm channel 14b every time the valve body 24 moves up and down regardless of the switching position of the valve body 24 of the water dividing mechanism 20. Inflow. Then, cleaning water is injected into the cleaning tank 2 from the first injection port 17 of the first arm nozzle 14 and the second injection port 18 of the second arm nozzle 15.

As described above, the switching operation of the water diversion mechanism 20 by the valve body 24 is executed.

Next, the operation of the dishwasher having the above configuration will be described.

First, the user holds the handle 1aa of the door 1a and pulls out the washing tank 2 from the main body 1 of the dishwasher. Next, the user sets an object to be cleaned 5 such as tableware in the tableware basket 4 from the opening 2 a at the top of the cleaning tank 2. Then, a predetermined amount of detergent is put into the cleaning tank 2. Next, the user pushes the cleaning tank 2 into the main body 1 and closes the door 1a. And a user sets a driving course with the operation part provided in the control part (not shown), operates a start button (not shown), for example, and starts washing operation. Thereby, a control part performs washing operation based on an operation course.

That is, the control unit will be described below with respect to a washing step for removing dirt from the object to be cleaned 5, a rinsing step for flowing the detergent and residue attached to the object to be cleaned 5, and a drying step for drying the object 5 to be cleaned. Execute in order according to the method.

First, the washing step of the washing operation will be explained.

The control unit first operates the water supply valve 10 to supply a predetermined amount of cleaning water to the cleaning tank 2. When the water supply is completed, the cleaning pump 6 is driven to pump the cleaning water, and the cleaning water is jetted from the cleaning nozzle 7 disposed near the bottom of the cleaning tank 2.

Next, the control unit energizes the heater 9 while spraying the cleaning water to heat the cleaning water. At this time, the control unit detects the temperature of the cleaning water via the wall on the bottom surface of the cleaning tank 2 by the temperature sensor 11. And a control part controls so that washing water becomes predetermined temperature.

Next, the sprayed cleaning water cleans the dirt of the article 5 to be cleaned, passes through the residual filter 8a and the drain port 8, and is sucked into the cleaning pump 6 again. The cleaning pump 6 pumps the sucked cleaning water and supplies the cleaning water to the cleaning nozzle 7. The supplied cleaning water flows into the cleaning nozzle 7 from the shaft opening 16 a of the rotating shaft 16. That is, the cleaning water is circulated as described above to clean the object 5 to be cleaned.

At this time, as described above, the valve body 24 of the water diversion mechanism 20 of the cleaning nozzle 7 rises by receiving a water pressure larger than the weight of the valve body 24 from the flowing cleaning water. And the flow part 27 of the valve body 24 is connected only to the 1st tower flow path 21a of the tower nozzle 19. FIG. Thus, the cleaning water passes through the first tower channel 21a and is jetted toward the object 5 to be cleaned from the first tower injection port 23a provided at the tip of the first tower channel 21a. In this case, much of the washing water that has lifted the valve body 24 makes a U-turn in the water diversion space 20 d and flows into the first arm channel 14 b of the first arm nozzle 14.

The first arm nozzle 14 extends in the left-right direction around the rotation shaft 16 as shown in FIGS. Therefore, the first arm channel 14b in the first arm nozzle 14 is also divided and extended in the left-right direction. And the 1st injection port 17 is arrange | positioned at the front end side of the left 1st arm flow path 14b. On the other hand, the second arm nozzle 15 is disposed on the distal end side of the right first arm channel 14b. Therefore, the wash water that has flowed into the left first arm channel 14 b shown in FIG. 3 is jetted from one or more first jet ports 17. And the 1st arm nozzle 14 rotates clockwise, for example by the reaction force of the injection of the wash water injected.

On the other hand, the washing water that has flowed into the first arm channel 14b on the right side shown in FIG. 3 flows into the second arm nozzle 15 from the second rotating shaft 15a. The wash water that has flowed into the second arm nozzle 15 passes through the second arm flow path 15b extending in the left-right direction, and is jetted from the two second jet ports 18 that are arranged point-symmetrically. And the 2nd arm nozzle 15 rotates clockwise, for example by the reaction force of the injection of the wash water injected. As a result, the first arm nozzle 14 and the second arm nozzle 15 having different lengths spray cleaning water over a wide range from the first injection port 17 and the second injection port 18 while rotating at different rotational speeds.

That is, the water diversion mechanism 20 according to the present embodiment is configured such that the supply of cleaning water to the arm unit 12 is not stopped. As a result, while the cleaning pump 6 is being driven, the cleaning water is constantly sprayed from below the table basket 4. Therefore, the cleaning power from the lower side of the cleaning object 5 is maintained by the cleaning water sprayed from the arm portion 12.

At the same time, the tower nozzle 19 of the present embodiment sprays wash water from the first tower injection port 23 a formed at a high position while rotating together with the first arm nozzle 14. At this time, the cleaning pump 6 is always driven. Therefore, the valve body 24 closes the flow path other than the first tower flow path 21 a in the tower nozzle 19 and rotates in synchronization with the cleaning nozzle 7.

Next, when the control unit drives the cleaning pump 6 for a predetermined time, the control unit once stops the cleaning pump 6. Thereby, the valve body 24 of the water diversion mechanism 20 descends while rotating by a predetermined angle. And it prepares for injection of the next washing water by re-driving washing pump 6. At this time, in the present embodiment, the water diversion mechanism 20 is provided at a position higher than the water level of the washing water staying at the bottom of the washing tank 2. Therefore, the wash water remaining in the water diversion space 20d is quickly discharged from the water diversion space 20d through the first injection port 17 and the shaft opening 16a. Thereby, the valve body 24 pushed up by the water pressure of the washing water also descends quickly. As a result, the injection from the plurality of tower injection ports 23 of the tower nozzle 19 can be sequentially switched in a short time.

Next, when the control unit drives the cleaning pump 6 again, the valve body 24 rises due to the water pressure of the cleaning water. Thereby, the circulation part 27 of the valve body 24 communicates with the next second tower channel. As a result, the wash water passes through the second tower flow path and is jetted to the object to be cleaned 5 from the second tower injection port 23b shown in FIG. And a control part stops the drive of the washing pump 6 after predetermined time passes.

Next, similarly to the above, the control unit drives the cleaning pump 6 to cause the flow unit 27 of the valve body 24 to communicate with the next third tower channel 21c. Accordingly, the cleaning water is jetted from the third tower injection port 23c of the third tower channel 21c toward the object to be cleaned 5. At this time, the operations of the first arm nozzle 14 and the second arm nozzle 15 are continued regardless of switching from the first tower flow path 21a to the third tower flow path 21c. That is, the first arm nozzle 14 and the second arm nozzle 15 spray cleaning water toward the object to be cleaned 5 over a wide range from below while rotating.

Next, the control unit drives the cleaning pump 6 to cause the flow unit 27 of the valve body 24 to communicate with the fourth tower channel. However, the fourth tower flow path has no tower injection port formed at the tip. Therefore, the injection of the washing water from the tower nozzle 19 is temporarily interrupted. At this time, since there is no jet of cleaning water from the tower nozzle 19, the water pressure of the cleaning water flowing into the arm portion 12 becomes high. As a result, the amount of cleaning water sprayed from the arm portion 12 increases. That is, the amount and momentum of the washing water sprayed from the first arm nozzle 14 and the second arm nozzle 15 are increased. Thereby, the form of the cleaning water sprayed to the article 5 to be cleaned changes. Specifically, the speed, direction, arrival position, and the like of the cleaning water that hits the object to be cleaned 5 change. As a result, the cleaning power by the cleaning water sprayed from the arm part 12 is improved.

That is, the control unit performs control so as to repeatedly drive and stop the cleaning pump 6. Then, the spraying direction of the cleaning water sprayed from the tower nozzle 19 is switched via the water splitting mechanism 20. Thus, the cleaning water is jetted while rotating from the arm portion 12 provided at a low position. At the same time, the cleaning water is sequentially jetted from the three tower jets 23 that are provided at a high position of the tower 13 and have different jetting directions and spreads while the tower 13 also rotates. That is, the cleaning water is jetted from a high position of the tower unit 13. Therefore, in particular, the cleaning range to the upper part of the cleaning tank 2 can be expanded. Furthermore, the cleaning object 5 is more reliably cleaned over a wide range including the height direction.

Further, the water diversion mechanism 20 switches the plurality of tower injection ports 23 to inject cleaning water. Therefore, since it does not inject simultaneously from the some tower injection port 23, the usage-amount of washing water can be restrict | limited. Thereby, use of washing water can be controlled. As a result, the detergency can be improved while saving water.

Further, while the washing pump 6 is being driven, washing water is constantly sprayed from below the table basket 4 through the arm portion 12. Therefore, the cleaning power from below can be maintained.

As described above, the control unit performs the washing step for a predetermined time.

Next, the rinse step of the cleaning operation will be described.

When the washing step is completed, the control unit discharges washing water including dirt out of the main body 1 of the dishwasher. Then, the control unit starts a rinsing step and newly supplies cleaning water into the cleaning tank 2.

Next, similarly to the washing step, the control unit operates the washing pump 6 and injects new washing water from the washing nozzle 7 toward the object to be washed 5. Then, the remaining detergent, residue, and the like are washed away from the object to be cleaned 5 with washing water. At this time, the control unit performs the rinsing step by repeatedly executing operations such as discharge of cleaning water and supply of cleaning water, for example, two to three times.

Then, when the rinsing step is completed, the control unit performs a drying step for a predetermined time, in which the air in the cleaning tank 2 is heated by the heater 9 to dry the object 5 to be cleaned.

This completes the dishwasher washing operation.

As described above, the dishwasher according to the present embodiment includes the washing tank 2 that accommodates the object to be washed 5, the washing pump 6 that pressurizes the washing water, and the washing nozzle that is rotatably supported and jets the washing water. 7 is provided. The cleaning nozzle 7 includes a rotating shaft 16 into which cleaning water flows, a plurality of tower channels 21 having tower injection ports 23, and a water diversion mechanism 20 that switches supply of the cleaning water to the plurality of tower channels 21. The water diversion mechanism 20 is configured to be disposed above the rotation shaft 16 on the extension line of the rotation shaft 16.

According to this configuration, the water diversion mechanism 20 is disposed on the upper portion of the cleaning nozzle 7. Thereby, it is not necessary to enlarge the rotating shaft 16 of the washing nozzle 7 in the vertical direction. Similarly, it is not necessary to increase the size of the bearing portion fitted to the rotating shaft 16. Therefore, it is not necessary to arrange the tableware basket 4 provided in the cleaning tank 2 at a high position. Thereby, the accommodation amount of the objects to be cleaned 5 such as the tableware stored in the tableware basket is increased, and further, the objects to be cleaned 5 having a larger shape can be accommodated. Therefore, more objects to be cleaned 5 can be accommodated than a conventional dishwasher. Moreover, the to-be-washed | cleaned material 5 can be wash | cleaned more reliably, performing water saving operation.

Further, the tower unit 13 includes a plurality of tower injection ports 23, and the water diversion mechanism 20 is configured to switch supply of cleaning water to the plurality of tower injection ports 23. According to this configuration, the cleaning water is also jetted from a high position of the tower unit 13. Therefore, in particular, the cleaning range to the upper part of the cleaning tank 2 can be expanded. Furthermore, since the water diversion mechanism 20 sequentially switches the plurality of tower injection ports 23 to inject the cleaning water, the amount of the cleaning water can be limited. Thereby, the cleaning power can be improved while saving water without increasing the amount of cleaning water used.

Further, the water diversion mechanism 20 is configured to have a timing at which the cleaning water is not supplied to any of the plurality of tower injection ports 23. According to this configuration, cleaning water is not jetted from the tower jet port 23 during a predetermined timing. Therefore, the amount of the cleaning water flowing into the arm unit 12 increases at the timing when the cleaning water is not jetted from the tower unit 13. At this time, the water pressure of the washing water flowing into the arm portion 12 increases. As a result, the amount and momentum of the cleaning water sprayed from the arm portion 12 increase. That is, the form of the cleaning water sprayed on the cleaning object 5 changes. As a result, the cleaning power by the cleaning water sprayed from the rotating arm portion 12 is improved.

Further, the valve body 24 of the water diversion mechanism 20 is rotated 90 degrees in the circumferential direction by one reciprocating motion. Then, the valve body 24 returns to the original position by four reciprocating motions. Therefore, it is not necessary to separately provide an actuator such as a motor, rotate the valve body 24, and switch the flow path for supplying cleaning water. Thereby, in the water diversion space 20d, there is no element that obstructs the flow of the cleaning water other than the valve body 24. As a result, the wash water supplied from the outside can be efficiently divided with a simple configuration.

In the present embodiment, an example has been described in which the tower passage 21 of the tower section 13 that is diverted by the valve body 24 is divided into four parts, and one round of the tower nozzle 19 is divided into four parts. I can't. For example, one round of the tower nozzle 19 may be divided into 2, 3 or 5 or more to constitute the tower flow path. In this case, it is preferable that at least one tower flow path has a configuration in which no tower injection port is provided.

Also, the valve body 24 of the present embodiment has a hollow cylindrical portion 26 into which the support shaft 28 of the tower portion 13 is inserted, and the valve body 24 moves up and down along the support shaft 28. Thereby, the valve body 24 can move smoothly up and down. The hollow cylindrical portion 26 of the valve body 24 is provided at the center of the valve body 24. Therefore, the wash water can flow into the water diversion space 20d without being hindered in flow. Thereby, the flow path resistance with respect to the inflowing washing water becomes small. Therefore, the washing water can be supplied to the tower flow path 21 by reliably switching at the disk portion 25 without suppressing the flow rate or supply amount of the washing water. As a result, the cleaning power of the dishwasher can be further improved.

Further, the valve body 24 of the present embodiment is configured to be separated from the tower flow path 21 by reciprocating in the vertical direction. Therefore, the valve body 24 can be rotationally driven without the foreign matter mixed in the washing water being bitten. Even if a foreign object is caught, the foreign object will be removed when the valve body 24 is lowered next time, so that it does not remain caught.

In the present embodiment, the configuration in which the valve body 24 is moved in the vertical direction in response to driving and stopping of the cleaning pump 6 has been described as an example, but the present invention is not limited thereto. For example, you may comprise so that the valve body 24 may be moved to an up-down direction with the rotation speed of the motor which comprises the washing pump 6. FIG. Specifically, the rotational speed of the motor is changed to a high rotational speed that only raises the valve body 24 and a low rotational speed that only lowers the valve body 24, and the valve body 24 is moved in the vertical direction. It may be moved to. Thereby, the cleaning pump 6 can be driven continuously instead of intermittently. For this reason, it is possible to suppress power consumption accompanying switching of driving.

In the present embodiment, the configuration in which all the cleaning water flowing into the cleaning nozzle 7 from the rotating shaft 16 passes through the water diversion space 20d is described as an example, but the present invention is not limited to this. For example, a part of the cleaning water that has flowed into the cleaning nozzle 7 is supplied to the tower outlet 23 through the diversion space 20d, and the remaining cleaning water does not pass through the diversion space 20d, It is good also as a structure which divides wash water so that it may supply to an injection port. That is, in the present embodiment, the water diversion mechanism 20 including the water diversion space 20d for moving the valve body 24 up and down is disposed above the rotation shaft 16 and further above the first arm channel 14b. Therefore, the configuration in which all the washing water passes through the water diversion space 20d is a path in which the washing water flowing into the first arm channel 14b makes a U-turn in the water diversion space 20d. Thereby, the flow path resistance with respect to the washing water in the water diversion space 20d is increased. Therefore, the cleaning pump 6 needs a large force to pump the cleaning water. However, according to the above distribution configuration, the wash water flowing into the first arm flow path 14b does not pass through the water diversion space 20d, so that the flow path resistance can be suppressed. Thereby, the cleaning pump 6 can reduce the force for pumping the cleaning water. As a result, the washing pump 6 can be reduced in size and energy can be saved.

In the present embodiment, the configuration in which the water diversion mechanism 20 divides water only into the plurality of tower channels provided in the tower nozzle 19 has been described as an example, but the present invention is not limited thereto. For example, the water splitting mechanism 20 may be configured to split water including the arm flow path of the first arm nozzle 14. Thereby, various fountain forms are realizable.

Further, the tower nozzle 19 of the present embodiment is configured so that the injection port portion 19a provided with the tower injection port 23 and the flow channel portion 19b provided with the tower flow channel 21 can be disassembled. Furthermore, the tower nozzle 19 is configured to be detachable from the water diversion mechanism 20. According to this structure, the injection port part 19a of the tower nozzle 19 can be removed from the flow path part 19b, and it can replace | exchange easily for the injection port part 19a which has the tower injection port from which an injection characteristic differs. The injection characteristics include an injection amount, an injection direction, and a diffusion angle that change depending on the shape of the tower injection port 23. Furthermore, the injection characteristics include the position and height at which the tower injection port 23 is disposed. Here, the height at which the tower injection port 23 is arranged can be easily adjusted by, for example, the length of the flow path portion 19b.

That is, according to this configuration, it is possible to perform cleaning in any form by simply replacing the injection port portion 19a having different injection characteristics without changing the basic configuration of the arm portion 12 and the water diversion mechanism 20 of the cleaning nozzle 7. Can be realized. Specifically, it is replaced with an appropriate injection port 19a in accordance with the shape and depth of the washing tub 2 or the layout of the tableware basket 4. Thereby, an effective cleaning power can be exhibited. In addition, by sharing the basic configuration, it is possible to provide a low-cost dishwasher while suppressing development costs and component costs.

Furthermore, according to this configuration, similarly to the first arm nozzle 14 and the second arm nozzle 15, the tower nozzle 19 can be easily attached and detached by the user. Therefore, the user can perform daily maintenance such as cleaning of the tower injection port 23 and the tower channel 21. Thereby, the fall of the cleaning power by clogging of the tower injection port 23 and the tower flow path 21 etc. can be suppressed.

(Embodiment 2)
Hereinafter, the dishwasher in this Embodiment 2 is demonstrated using FIG. 11 and FIG. 11 and 12 are front sectional views of the dishwasher according to Embodiment 2 of the present invention. That is, the dishwasher of the present embodiment is different from the dishwasher of the first embodiment mainly in the configuration of the upper shelf basket. The main configuration of the dishwasher according to the present embodiment is the same as the configuration of the dishwasher described in the first embodiment, and thus detailed description thereof is omitted.

As shown in FIG. 11 and FIG. 12, the tableware basket 4 of the present embodiment is composed of upper and lower two stages of a lower basket 41 and an upper shelf basket. The upper shelf basket 42 is configured to be deployable in the left-right direction, and a cup or a cup of tea is mainly placed among the objects to be cleaned 5. In the lower basket 41, mainly dishes and bowls are placed among the objects to be cleaned 5.

Also, the accessory case 43 is arranged on the lower car 41 so as to be laterally movable in the left-right direction. In the accessory case 43, the object 5 to be cleaned is accommodated mainly in a state where elongated cutlery such as chopsticks and spoons are set up.

The upper shelf basket 42 is provided with sliding members 44 at both ends in the front-rear direction. A rail member 45 is disposed in a horizontal direction on the front and rear side walls of the cleaning tank 2 corresponding to the sliding member 44 of the upper shelf basket 42. The rail member 45 includes a groove 45a. The sliding member 44 slides in the groove 45a of the rail member 45 in the left-right direction. Thereby, the upper shelf basket 42 can be laterally moved in the left-right direction in the washing tub 2 of the dishwasher above the lower basket 41. That is, it is possible to move from the position of the upper shelf car 42 closest to the left side shown in FIG. 11 to the position of the upper shelf car 42 closest to the right side shown in FIG. At this time, the accessory case 43 is preferably moved in the horizontal direction so as not to obstruct the horizontal movement of the upper shelf basket 42.

Note that the upper shelf basket 42 can be arranged upright with the sliding member 44 as a rotation axis. Thus, when a large plate or a frying pan is placed on the lower car 41, the upper shelf car 42 does not become an obstacle.

According to this configuration, the upper shelf car 42 can be moved laterally. As a result, when the article to be cleaned 5 is set in the lower car 41, the upper shelf car 42 can be moved laterally, for example, standing, and the object to be cleaned 5 can be set in the lower car 41. In addition, even when the article to be cleaned 5 is already set in the upper shelf basket 42, the article to be cleaned 5 can be set in the lower basket 41 by moving the upper shelf basket 42 in the left or right direction. Further, the lateral movement of the upper shelf car 42 can form a space in which an auxiliary car 46 (to be described later) can be turned upside down.

Further, as shown in FIG. 12, the rail member 45 can regulate the moving range of the upper shelf basket 42 by adjusting the length of the groove 45a in the left-right direction. Specifically, when the accessory case 43 is in the rightmost position, the groove portion 45a is configured so as not to cover the upper space of the accessory case 43 even when the upper shelf basket 42 is laterally moved. That is, the movement range of the upper shelf basket 42 is regulated by the groove 45 a so as to leave a portion that does not cover the upper space of the accessory case 43.

According to this configuration, even when the user carelessly moves the upper shelf basket 42 to the maximum extent, the cutlery accommodated in the accessory case 43 is prevented from contacting the right end of the upper shelf basket 42. it can. Thereby, the application of a load such as an impact due to contact with the cutlery of the accessory case 43 can be prevented. As a result, it is possible to prevent the accessory case 43 and the cutlery from being damaged.

Further, an auxiliary car 46 may be further provided on the upper shelf car 42 of the present embodiment. Specifically, the auxiliary car 46 is rotatably provided on the left side of the upper shelf car 42 on the side opposite to the accessory case 43. The auxiliary car 46 can be rotated and inverted in the horizontal direction by removing it from a locking part (not shown). As a result, a cup or the like can be placed on the auxiliary car 46. As a result, it becomes possible to accommodate more objects to be cleaned 5 in the cleaning tank 2. That is, as shown in FIG. 12, the auxiliary car 46 is configured to be able to be inverted in a space formed by the lateral movement of the upper shelf car 42 in the right direction.

Further, when the auxiliary car 46 is rotated from the upper shelf car 42 and turned upside down, the left end of the auxiliary car 46 is supported by a support portion (not shown) formed on the wall surface of the cleaning tank 2. Thereby, the to-be-washed | cleaned material 5 can be mounted in the auxiliary basket 46, and is supported by the support part. That is, the tip of the auxiliary car 46 is supported by the support portion. Therefore, the auxiliary car 46 is held with sufficient strength even when the article 5 to be cleaned is placed. As a result, more objects to be cleaned 5 can be accommodated.

And the dishwasher of this Embodiment is equipped with the washing nozzle 7 similarly to the dishwasher of Embodiment 1. FIG. The cleaning nozzle 7 includes an arm portion 12 that rotates in a wide range in the horizontal direction below the lower basket 41, and a tower portion 13. The tower portion 13 is provided at the center portion of the arm portion 12 so as to protrude above the rotating shaft 16 and the arm portion 12.

As described above, the dishwasher of the present embodiment is configured.

Hereinafter, the operation of the dishwasher configured as described above will be described with reference to FIG.

First, the user pulls out the washing tank 2 from the main body 1 of the dishwasher. Then, the user sets an object to be cleaned 5 such as tableware in the tableware basket 4 from the opening 2 a at the top of the cleaning tank 2. At this time, in the case of the dishwasher of the present embodiment, the user first moves to the left end in a state where the auxiliary basket 46 and the upper shelf basket 42 are erected. Thereby, the area of the upper opening 2a with respect to the lower car 41 of the cleaning tank 2 is also increased. Then, the user sets a plate, a bowl or the like in the lower car 41 in the above state. Further, the user moves the accessory case 43 to the right end, and stores the accessory case 43 in the accessory case 43 with chopsticks, a spoon and the like standing upright.

Next, the user inverts the upper shelf basket 42 and moves it to the right end. Further, the auxiliary car 46 is placed in the space formed by the movement of the upper shelf car 42. Then, a cup, a cup of water, and the like are set in a wide area formed by inverting the upper shelf basket 42 and the auxiliary basket 46. When all the objects to be cleaned 5 are set, the user puts a predetermined amount of detergent into the cleaning tank 2.

Next, the user pushes the cleaning tank 2 into the main body 1 and closes the door 1a. And a user sets a driving course with the operation part provided in the control part (not shown), operates a start button (not shown), for example, and starts washing operation. Thereby, a control part performs washing operation based on an operation course. That is, the control unit sequentially executes a washing step for removing dirt from the object 5 to be washed, a rinsing step for flowing a detergent and a residue attached to the object 5 to be washed, and a drying step for drying the object 5 to be washed. To do.

Since the cleaning operation is the same as the method described in the first embodiment, the description is omitted.

That is, the dishwasher according to the second embodiment can place dishes and cups in a wide area of the upper shelf basket 42 and the auxiliary basket 46. Therefore, more items to be cleaned 5 can be set than the upper shelf basket of the conventional dishwasher.

However, it is usually difficult to clean many objects 5 to be cleaned set in the upper shelf car 42 and the auxiliary car 46 in the above state. That is, when cleaning is performed only with the water flow sprayed from the arm portion 12 provided below the lower car 41, there is a high possibility that the cleaning water is blocked by the article 5 to be cleaned set on the lower car 41. In other words, it becomes difficult to reliably clean many objects 5 to be cleaned set in the upper shelf car 42 and the auxiliary car 46.

Therefore, in the dishwasher of the present embodiment, the tower unit 13 is provided above the rotating shaft 16 of the rotating arm unit 12, and the tower nozzle 19 for injecting cleaning water is provided. Further, a plurality of tower injection ports 23 having different opening shapes are formed at the tip of the tower nozzle 19. Therefore, the wash water is jetted from different tower jet ports 23 in different directions and in different spreading ranges as indicated by dotted arrows in FIG. Accordingly, the cleaning water is uniformly sprayed on the upper portion of the cleaning tank 2 without being blocked by the article 5 to be cleaned set in the lower car 41. As a result, it is possible to effectively wash the cleaning object 5 set on the upper shelf basket 42 by spraying the cleaning water accurately.

That is, the dishwasher in the present embodiment can accommodate a large number of objects to be cleaned 5 by expanding the upper shelf basket 42. Furthermore, the housed object 5 to be cleaned can be reliably cleaned by the arrangement of the tower portion 13.

In each of the above embodiments, the description has been made with the configuration in which the tower injection port 23 is not provided in the fourth tower flow path of the tower nozzle 19. That is, although the structure which closes the front-end | tip of a 4th tower flow path and generate | occur | produces the timing which does not inject washing water from the tower part 13 was demonstrated to the example, it is not restricted to this. For example, you may provide the tower injection port 23 corresponding to each at the front-end | tip of all the tower flow paths 21 formed in the tower part 13. As shown in FIG. With this configuration, it is possible to increase the types of opening shapes of the tower injection ports 23. As a result, the cleaning water can be sprayed uniformly over a wider range.

Further, even if the plurality of tower injection ports 23 are sequentially switched by the water diversion mechanism 20, there is little change in the pressure and amount of the cleaning water flowing into the arm portion 12. Therefore, the arm part 12 that rotates by the reaction force of the washing water jetted from the jet port of the arm part 12 can rotate at a constant predetermined speed. As a result, even if the predetermined speed is set to a lower speed, the cleaning nozzle can be stably and smoothly rotated.

As described above, the dishwasher of the present invention jets washing water, a washing tank in which the dish basket is accommodated, a washing tank in which the dish basket is accommodated, a washing pump that pumps washing water, and the like. A cleaning nozzle. The cleaning nozzle has a rotating shaft into which the cleaning water flows, a plurality of flow paths having injection ports, and a water diversion mechanism that switches supply of the cleaning water to the plurality of flow paths. The water diversion mechanism is configured to be disposed above the rotation axis.

According to this configuration, the water diversion mechanism is disposed above the rotation axis. This eliminates the need for increasing the rotational axis of the cleaning nozzle in the vertical direction. Similarly, there is no need to increase the size of the bearing portion fitted to the rotating shaft. Therefore, it is not necessary to arrange the tableware basket provided in the washing tank at a high position. Thereby, the amount of objects to be cleaned such as tableware stored in the tableware basket can be increased. As a result, more objects to be cleaned can be accommodated in the tableware basket, and the objects to be cleaned can be reliably cleaned while saving water.

Further, the washing nozzle of the dishwasher of the present invention includes an arm portion that rotates horizontally below the tableware basket, and a tower portion that protrudes upward at the center portion of the arm portion, You may arrange | position to a part. According to this configuration, the water diversion mechanism is configured as a part of the tower portion. Therefore, the water diversion mechanism can be disposed above the rotation axis.

Further, the tower portion of the dishwasher of the present invention may be provided with a plurality of injection ports, and the water diversion mechanism may be configured to switch the supply of cleaning water to the plurality of injection ports. According to this structure, wash water can be jetted from the high position of a tower part. Thereby, especially the washing | cleaning range to the washing tank upper part can be expanded. Furthermore, the amount of washing water to be injected can be limited by switching the injection port with the water diversion mechanism. Thereby, the amount of water to be used can be suppressed, and the cleaning power can be improved while saving water.

Further, the water diversion mechanism of the dishwasher according to the present invention may be configured to have a timing at which the washing water is not supplied to any of the plurality of injection ports. According to this configuration, the amount and the water pressure of the cleaning water flowing into the arm portion can be increased at the timing when the cleaning water is not sprayed from the injection port provided in the tower portion. This increases the amount and momentum of the cleaning water sprayed from the arm portion. As a result, the form of the cleaning water sprayed on the object to be cleaned is changed, and the cleaning power is improved.

The arm part of the dishwasher of the present invention has a plurality of injection ports and an arm channel communicating with the injection port, and the water diversion mechanism does not stop the supply of the washing water to the arm channel. It may be configured. According to this configuration, the cleaning water is constantly sprayed from below the tableware basket while the cleaning pump is being driven. Therefore, the cleaning power from below with the cleaning water is maintained.

Further, the water diversion mechanism of the dishwasher according to the present invention includes a valve body that moves up and down depending on the presence or absence of water pressure of the washing water pumped by the washing pump, a water diversion space in which the valve body moves up and down, and a valve body that moves up and down. It has an engaging part that rotates the valve body by a predetermined angle. You may comprise a valve body so that it may rotate, whenever it moves up and down, and it switches supply of the washing water to a several injection port. According to this configuration, there is no need to separately provide an actuator such as a motor for driving the valve body. Therefore, control of a motor etc. becomes unnecessary. As a result, a simple configuration of the water diversion mechanism is possible.

Further, the water diversion mechanism of the dishwasher according to the present invention may be configured such that the wash water flowing into the washing nozzle from the rotating shaft passes through the diversion space. According to this configuration, the washing water applies a large water pressure to the valve body to raise and rotate the valve body. Therefore, the flow path can be reliably switched by the raised valve body.

In the dishwasher of the present invention, a part of the washing water flowing into the washing nozzle passes through the water diversion space and goes to the jet part of the tower part, and the rest does not pass through the water diversion space and the jet part of the arm part. You may comprise so that it may go to.

In the dishwasher of the present invention, as described above, the water diversion mechanism including the water diversion space in which the valve body moves up and down is disposed at a position above the rotation shaft and above the arm flow path. At this time, if all the wash water passes through the diversion space, the wash water flowing into the arm flow path becomes a U-turn path in the diversion space and the flow path resistance increases. For this reason, the cleaning pump requires a large force to pump the cleaning water. However, according to the above configuration, the wash water flowing into the arm flow path does not pass through the water diversion space, so that the flow path resistance is suppressed. Thereby, it can comprise with a washing pump with small power for pumping washing water. As a result, the washing pump can be reduced in size and energy can be saved.

Moreover, the tower part of the dishwasher of the present invention may have an injection part provided with a plurality of injection holes, and the injection part may be detachably disposed on the tower part. According to this configuration, the tower portion can replace the injection port portion including the injection ports having different injection characteristics. Thus, the object to be cleaned can be cleaned with an appropriate cleaning power in accordance with the shape and depth of the cleaning tank, the layout of the tableware basket, or the like, without changing the arm portion and the water diversion mechanism of the cleaning nozzle of the basic configuration. In addition, by sharing the basic configuration, development costs and component costs can be suppressed. Further, the user can remove the injection port portion from the tower portion and perform daily maintenance such as cleaning of the injection port of the tower portion. Thereby, the fall of the cleaning power of a cleaning nozzle can be controlled.

Moreover, in the dishwasher of the present invention, the plurality of spray ports of the tower portion may have different opening shapes. According to this configuration, the wash water is jetted from different jet ports in different directions to different spreading ranges. Thereby, cleaning water can be sprayed evenly to the upper part of the cleaning tank, and cleaning can be performed more effectively.

Further, the dish basket of the dishwasher of the present invention may include a lower basket and an upper shelf basket, and the upper shelf basket may be configured to be laterally movable. According to this configuration, when an object to be cleaned is set in the lower car, even if the object to be cleaned is set in the upper shelf car, the object to be cleaned can be set in the lower car by the lateral movement of the upper shelf car.

Moreover, the upper shelf basket of the dishwasher of the present invention further includes an auxiliary basket. The auxiliary car is pivotally supported by the upper shelf car and is held in a standing or falling state on the upper shelf car. After the upper shelf car moves sideways, it is placed in the space created by the movement of the upper shelf car. You may comprise. According to this configuration, the object to be cleaned can be placed on the auxiliary car by inverting the auxiliary car by the lateral movement of the upper shelf car. Thereby, it becomes possible to accommodate more objects to be cleaned in the cleaning tank.

The dishwasher according to the present invention accommodates more objects to be washed than conventional dishwashers, and can be reliably washed while saving water, and thus can be applied to washing machines other than dishwashers.

DESCRIPTION OF SYMBOLS 1,25b Main body 1a Door 1aa Handle 2,52 Cleaning tank 2a, 22, 59a Opening 3 Lid 4,51 Tableware basket 5 Object to be cleaned 6,53 Cleaning pump 7,54 Cleaning nozzle 8 Drain port 8a Residual filter 9 Heater DESCRIPTION OF SYMBOLS 10 Water supply valve 11 Temperature sensor 12,55 Arm part 13 Tower part 14 1st arm nozzle (arm nozzle)
14a Communication part 14b 1st arm flow path (arm flow path)
15 Second arm nozzle (arm nozzle)
15a Second rotating shaft 15b Second arm channel (arm channel)
16, 56 Rotating shaft 16a Shaft opening 17 First injection port (injection port)
18 Second injection port (injection port)
DESCRIPTION OF SYMBOLS 19 Tower nozzle 19a Injection part 19b Channel part 20,58 Water diversion mechanism 20a Outer side wall 20b Inner side wall 20c Rib 20d Water diversion space 20e Gap 21 Tower flow path
21a 1st tower flow path 21c 3rd tower flow path 23 Tower injection port (injection port)
23a 1st tower injection port 23b 2nd tower injection port 23c 3rd tower injection port 24,59 valve body 25 disk part 25a buffer part 26 hollow cylindrical part 27 flow part 28 support shaft 28a root 30 upper surface engagement part 30a, 31a inclination Surface 30b, 31b Vertical surface 31 Lower surface engaging portion 32 Upper sliding portion 33 Lower sliding portion 41 Lower cage 42 Upper shelf cage 43 Small box 44 Sliding member 45 Rail member 45a Groove portion 46 Auxiliary cage 54a, 54b Injection port 55a, 55b Inlet part 57 Tower nozzle 59b Closed part 60 Engagement part

Claims (12)

The tableware basket where the item to be cleaned is placed,
A washing tank in which the tableware basket is accommodated;
A cleaning pump for pumping cleaning water;
A cleaning nozzle for injecting the cleaning water,
The washing nozzle is
A rotating shaft into which the washing water flows;
A plurality of flow paths having injection ports;
A water diversion mechanism for switching the supply of the washing water to the plurality of flow paths,
The water diversion mechanism is a dishwasher disposed above the rotation shaft. The washing nozzle is
An arm that rotates horizontally below the tableware basket;
A tower part provided to project upward at the center part of the arm part,
The dishwasher according to claim 1, wherein the water diversion mechanism is disposed in the tower portion. The tower portion includes a plurality of injection ports,
The dishwasher according to claim 2, wherein the water diversion mechanism switches supply of the washing water to the plurality of injection ports. The dishwasher according to claim 3, wherein the water diversion mechanism is configured to have a timing at which the washing water is not supplied to any of the plurality of injection ports. The arm portion is
A plurality of jets,
An arm flow path communicating with the injection port,
The dishwasher according to claim 2, wherein the water diversion mechanism is configured not to stop the supply of the washing water to the arm channel. The water diversion mechanism is
A valve body that moves up and down depending on the presence or absence of water pressure of the cleaning water pumped by the cleaning pump;
A water diversion space in which the valve element moves up and down;
An engaging portion that rotates the valve body by a predetermined angle by vertically moving the valve body,
The dishwasher according to any one of claims 1 and 2, wherein the valve body rotates each time it moves up and down, and switches the supply of washing water to the plurality of flow paths. The water diversion mechanism is
The dishwasher according to claim 6, wherein the washing water that has flowed into the washing nozzle from the rotating shaft passes through the water diversion space. A part of the washing water flowing into the washing nozzle passes through the water diversion space and goes to the tower nozzle, and the rest goes to the arm jet without passing through the water diversion space. A dishwasher according to claim 6 configured. The tower portion has an injection port portion provided with the plurality of injection ports,
4. The dishwasher according to claim 3, wherein the spray port portion is detachably disposed on the tower portion. The dishwasher according to claim 3, wherein the plurality of injection holes of the tower portion have different opening shapes. The tableware basket includes a lower basket and an upper shelf basket,
The dishwasher according to claim 1, wherein the upper shelf basket is configured to be laterally movable. The upper shelf car further includes an auxiliary car,
The auxiliary basket is
It is pivotally supported by the upper shelf cage and is held in a standing or fallen state on the upper shelf cage,
The dishwasher according to claim 11, wherein the dishwasher is configured to be able to be inverted in a space formed by the movement of the upper shelf basket after the upper shelf basket has moved laterally.

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