JP4708403B2 - dishwasher - Google Patents

Description

  The present invention relates to a dishwasher for washing dishes, and more specifically, a dishwasher body having an opening at the front, and a washing tub provided so as to be freely drawn out from the dishwasher body and having an opening upward. A dish pump housed in the washing tank, on which an object to be cleaned such as dishware is placed, a washing pump for pressurizing washing water, and a washing nozzle for supplying the washing water pressurized by the washing pump and ejecting the washing water It is related with the dishwasher provided with.

  This type of dishwasher is called a so-called built-in type, and the dishwasher body is configured in a single casing as seen in Patent Document 1 below, or kitchen furniture such as a sink as seen in Patent Document 2 below. Is provided as an integral part of the system.

In any case, this type of dishwasher has a feature that the capacity is easily increased as compared with the placement type, and is suitable for washing a large amount of dishes at once. For washing dishes, washing water pressurized by a washing pump is sprayed over a wide area with rotation from a large rotary washing nozzle that has a rotation center at the approximate center of the bottom of the washing tank as seen in Patent Documents 1 and 2. It is done by doing. The washing water injection condition is generally set optimally in consideration of the relationship with the arrangement direction of the tableware.
JP 2005-73992 A Japanese Patent Laid-Open No. 6-169821

  However, these types of dishwashers have recently been required to save water and reduce washing time for energy saving and speedy processing. It is difficult to guarantee the optimal cleaning results at all times due to the fact that the conditions cannot be fully regulated to match the optimal settings, the processing amount varies, and the cleaning conditions on the tableware vary from time to time. It has become to.

  In order to cope with this, it is conceivable to increase the cleaning capability by increasing the number of cleaning nozzles and their discharge paths. On the other hand, in order to work a plurality of cleaning nozzles and one or a plurality of discharge paths that may be provided to them, it is necessary to divide the cleaning liquid from the cleaning pump into each discharge path provided in the cleaning nozzles. There is. In this case, if the water is divided at the same time, the total amount of water required for the circulation of the washing water increases and the running cost rises, and the pressure drops or the combined jets interfere with each other. It is conceivable that the efficiency decreases. This can be dealt with by dividing water into a plurality of cleaning nozzles and discharge paths at different times, but at least one cleaning nozzle is preferentially used by adopting a conventional rotary cleaning nozzle, and is caused by this priority cleaning. It can be said that it is reasonable to inject the cleaning water in an auxiliary manner by a non-rotating cleaning nozzle provided along the peripheral wall of the cleaning tank with respect to a certain cleaning week point region. In any case, it is desired that the non-rotating cleaning nozzle is provided with a narrow, fixed, long, and / or many injection region.

  However, the rotary cleaning nozzle provided at the bottom of the cleaning tank is close to the cleaning pump provided around the bottom of the cleaning tank and the discharge path is short, but the non-rotating cleaning nozzle extends horizontally after rising up to a predetermined height in the cleaning tank. It is conceivable to have a horizontal part so that cleaning water can be injected into a predetermined area in a plan view into the cleaning tank, but the discharge path becomes longer and the initial injection of cleaning water is delayed compared to the rotary cleaning nozzle. The response of switching water is poor, and pressure loss is likely to occur.

  An object of the present invention is to have a pull-out type cleaning tank from the opening at the front, and to perform effective cleaning by selectively operating a plurality of cleaning nozzles having one or a plurality of discharge paths by water distribution. It is an object of the present invention to provide a dishwasher capable of shortening a discharge path as a non-rotating washing nozzle arranged at least one in plan view and overlapping with a washing pump.

In order to achieve the above object, a dishwasher of the present invention includes a dishwasher body having an opening at a front portion thereof, a washing tub that is provided so as to be freely drawable with respect to the dishwasher body, and has an opening upward. , A tableware housed in the washing tub, on which an object to be cleaned such as tableware is placed, a rear wall of the four peripheral walls of the washing tub, one of the side walls on both sides, and a position along at least one of the front walls A cleaning pump that is provided and pressurizes the cleaning water, a water distribution unit that selectively supplies the cleaning water pressurized by the cleaning pump to a plurality of discharge paths, and an injection having one or more of the discharge paths A plurality of cleaning nozzles for injecting cleaning water from the mouth to the object to be cleaned, and the water diversion means has a valve chamber forming an inflow portion communicating with the cleaning pump, and the plurality of discharges connected to the valve chamber. Water diversion passage with multiple outflow channels communicating with the route Is composed wash water flowing provided in the valve chamber in the valve body to switch to selectively diverted to the plurality of outlet channel, at least one of said plurality of cleaning nozzles, jetting washing water A non-rotating cleaning nozzle having a horizontal portion having an injection port and a rising portion for guiding cleaning water to the horizontal portion, and the rising portion has one end portion at a position away from the cleaning pump in plan view. The horizontal portion is connected to one end portion of the rising portion, and passes through at least the upper portion of the cleaning pump in a plan view or at least above the cleaning pump. provided one said further at least one of the plurality of cleaning nozzles, a rotary washing nozzle to position the center of rotation substantially the center of the bottom of the cleaning tank, further said diversion means, the Provided on the central side of the cleaning tank of the cleaning pump, the valve chamber opens a connection port with the cleaning pump on the opposite side of the cleaning pump, and the cleaning pump, the water diversion means, and the rising portion, The rotation center of the rotary cleaning nozzle is disposed within a substantially 1/4 region having a diagonal line connecting one corner formed by two of the four walls .

  According to such a configuration, when the washing pump is driven after supplying water to the washing tub of the dishwasher main body, the washing pump sucks and pressurizes the washing water in the washing tub and sends it to the water dividing means. A plurality of cleaning nozzles including at least one non-rotating cleaning nozzle because water is selectively supplied to one or a plurality of discharge paths of the plurality of cleaning nozzles, each of which is a non-rotating cleaning nozzle, simultaneously or at different times. And the cleaning action by one or a plurality of discharge paths that they have, are selectively combined, and the washing water is ejected from a plurality of nozzle positions in various patterns into the washing tank and placed on the tableware basket. The wash can be washed.

Moreover, the non-rotating cleaning nozzle supplies the cleaning water from the cleaning pump provided around the bottom of the cleaning tank to the horizontal part through the rising part and sprays it with the water distribution by the water dividing means. By providing at least one of the four peripheral walls of the cleaning pump via or above the cleaning pump disposed along the four walls, a rising portion that is separated from the cleaning pump in plan view is included. The length of the water supply path through the water means can be shortened by a routing path that does not interfere with the cleaning pump. Further, the horizontal portion is positioned at the required predetermined height of the cleaning tank by the rising portion, and can be combined with other cleaning nozzles. Further, in such a configuration, the plurality of cleaning nozzles and the cleaning water pumps and the cleaning pump are located in a substantially ¼ region having a diagonal line connecting the central portion of the bottom of the cleaning tank and one corner. The water can be divided into one or a plurality of discharge paths, the entire cleaning water supply path is shortened, and at least one cleaning nozzle is arranged with a center of rotation at the center of the bottom of the cleaning tank. By supporting and connecting the rotation center as a washing nozzle, it is possible to avoid further extending the water distribution and supply path from the 1/4 region, and between the rotation support and the outlet. It is possible to further reduce the connection distance between the two by providing a valve chamber closer to the cleaning pump.

The effluent, prior Symbol diversion passage, together comprises integrally forming at least one of the plurality of outlet channel, the other end portion of the rising portion of the non-rotating cleaning nozzle, which is integrally formed on said diversion passage It can be configured such that it can be connected in the vertical direction to an outlet provided to open upward in the path.

  In such a configuration, the washing water from the washing pump flows into the valve chamber in the water dividing means, and then passes through at least one outflow passage integrally formed in the water dividing passage connected to the valve chamber. Since the water is supplied to the non-rotating cleaning nozzle by water distribution in the route, the water supply route is shortened also by this. Further, since the non-rotating cleaning nozzle is connected to the outlet opening upward of the outflow passage in the vertical direction at the other end, the connection with the outflow passage of the water diversion means serving as a fixed portion on the washing tank side is washed. This can be done without any other obstacles from above the tank.

  Further, the rising portion is constituted by a plurality of discharge paths, and a horizontal portion and its discharge path are provided corresponding to each of the plurality of discharge paths, and a plurality of discharge paths of the rising portion are provided corresponding to each. Further, it can be provided so as to be connected to and separated from a plurality of outlets of the diversion passage.

  In such a configuration, the number of discharge paths of the non-rotating cleaning nozzle is increased to increase the cleaning water injection area to enhance the cleaning effect, while the connection with the water distribution means is connected to the plurality of outlets in the water distribution passage. Can be connected and disconnected simultaneously, that is, in one behavior.

  In addition, a bulging portion is provided that bulges the bottom of the cleaning tank upward along at least one of the rear wall, one of the side walls on both sides, and the front wall. At least one of the cleaning pump and a driving motor that drives the cleaning pump is disposed in a space, and the non-rotating cleaning nozzle has a horizontal portion at least one of the rear wall, one of the side walls on both sides, and the front wall. The rising portion is connected to an outlet that is opened upward from the height of the bottom of the washing tank in the vicinity of the washing pump in a plan view of the diversion passage, and the rear portion The wall, one of the side walls on both sides, and at least one in the vicinity of the front wall may be raised.

  In such a configuration, at least one of the cleaning pump and the drive motor is located in a space outside the cleaning tank below the bulging portion where the bottom of the cleaning tank is bulged upward along at least one of the four circumferential walls. It is possible to prevent a dead space from protruding independently around the bottom of the washing tank, and a horizontal portion of the non-rotating nozzle is provided in one along the at least the bulging portion of the four peripheral walls. In addition, the rising part is easily connected to the outlet that has opened up from the height of the bottom of the washing tank in the vicinity of the washing pump in plan view of the diversion passage. Since it rises from this connection position at least at one location in the vicinity of at least one of the rear wall, one of the side walls on either side, and the front wall, the length of the overhang path on the inner surface of the cleaning tank quadrilateral wall Short becomes, to less likely to interfere with the cleaning of such four peripheral walls, not susceptible to external force from being caught.

  The water diversion means may be provided on the central side of the cleaning tank of the cleaning pump, and the valve chamber may have a connection port with the cleaning pump opened on the side facing the cleaning pump.

  In such a configuration, the water distribution means and the cleaning pump are located in a substantially 1/4 region having a diagonal line connecting the central portion of the bottom of the cleaning tank and one corner, and a plurality of cleaning nozzles and the 1 Rotating cleaning nozzle that can divide water into one or a plurality of discharge paths, shortens the entire cleaning water supply path, and has at least one cleaning nozzle disposed at the center of the bottom of the cleaning tank with a center of rotation By supporting and connecting the rotation center portion, it is possible to prevent the water distribution and supply path from extending further from the 1/4 region, and cleaning between the rotation support portion and the outlet A valve chamber can be provided at a position closer to the pump to further reduce the connection distance between the two.

  According to the dishwasher of the present invention, the washing water is obtained by selectively combining the plurality of washing nozzles, at least one of which is a non-rotating washing nozzle, and the action of one or more discharge paths provided therein simultaneously or at different times. Can be sprayed into the cleaning tank in various patterns from multiple nozzle positions, and the diversity of the total injection area, total injection density, and direction of the cleaning water is increased. The efficiency can be increased, and if the injection modes that interfere with each other are selectively executed at different times, the cleaning effect is not reduced and the waste of injection can be saved.

  For this purpose, a cleaning nozzle that has a large cleaning area and a high cleaning effect, such as a specific cleaning nozzle, cleaning by a specific discharge route is given the highest priority, or a cleaning week that tends to occur due to differences in specifications such as tableware arrangement. It is preferable to use a non-rotating cleaning nozzle corresponding to the point as an auxiliary. Moreover, the running water can be reduced by reducing the total amount of water necessary for the circulation according to the ratio at which the water is divided into the plurality of discharge paths at different times, and the pressure loss is further reduced.

  In particular, the non-rotating cleaning nozzle supplies the cleaning water from the cleaning pump to the horizontal part through the rising part by water splitting by the water dividing means, and the horizontal part is injected into at least one of the four peripheral walls of the cleaning tank. The cleaning water is jetted from the predetermined height of at least one inner surface of the four circumferential walls of the cleaning tank toward the set area via the upper side of the cleaning pump arranged along the upper side or other cleaning It works in combination with the nozzle, and includes a rising part that is separated from the washing pump in plan view, and the water supply path length through the water diversion means from the washing pump overlaps with the washing pump at a height that does not interfere with the washing pump It can be shortened in the routing route.

  Hereinafter, a dishwasher according to an embodiment of the present invention will be described with reference to FIGS. 1 to 10 for understanding of the present invention. Note that the following description is a specific example of the present invention and does not limit the contents described in the scope of claims.

  A dishwasher 100 according to the present embodiment schematically shown in FIG. 1 is provided with a dishwasher main body 2 having an opening 1 at a front portion thereof, and is freely detachable from the dishwasher main body 2, and opens upward. 3 and a washing tub 4 accommodated in the washing tub 4 and placed on an object to be washed such as tableware, and the like, and the washing water is pressurized by driving in the washing direction and used for washing, or A cleaning / drainage pump 8 that drains by driving in the direction of drainage, and a rotary cleaning nozzle 12 having a rotation center 11 positioned at the center of the bottom 4a of the cleaning tank 4 is washed with the cleaning water pressurized by the cleaning / drainage pump 8. 1 of the non-rotating cleaning nozzle 13 provided in at least one of the one or a plurality of discharge paths, the rear wall 4b1 of the four peripheral walls 4b of the cleaning tank 4, the side walls 4b2, 4b3 on both sides, and the front wall 4b4. One or more discharges And a selectively supplying water diversion unit 14 on the road. Instead of the cleaning / drainage pump 8, a dedicated pump for cleaning and draining may be employed. Thereby, the installation of piping and pumps for cleaning and the arrangement of piping and pumps for drainage can be optimally designed individually.

  As a result, when the washing / drainage pump 8 is driven in the washing direction after supplying water to the washing tub 4 of the dishwasher main body 2, the washing / drainage pump 8 sucks and pressurizes the washing water in the washing tub 4 and supplies it to the water distribution means 14. Send it out. Since the water dividing means 14 selectively supplies water to one or a plurality of discharge paths of the rotary cleaning nozzle 12 and one or a plurality of discharge paths of the non-rotary cleaning nozzle 13 simultaneously or at different times. The conventional rotary cleaning nozzle 12 is disposed at the center of the bottom 4a of the cleaning tank 4 with the rotation center 11, the rear wall 4b1 of the four peripheral walls 4b of the cleaning tank 4, and one of the side walls 4b2, 4b3 on both sides. , When selectively working with at least one of the front wall 4b4 and the non-rotating cleaning nozzle 13 newly provided, or when selectively operating the rotating and non-rotating cleaning nozzles 12 and 13, In combination with selectively working a plurality of discharge paths that may be provided in the cleaning tank, the cleaning water is washed in various patterns from a plurality of nozzle positions on the bottom 4a and the four peripheral walls 4b of the cleaning tank 4 in various patterns. It can is jetted to clean the cleaning object placed on the tableware basket 6,7 within.

  As a result, the rotary cleaning nozzle 12 having the rotation center 11 at the substantially central portion of the bottom 4a of the cleaning tank 4 and the non-rotational cleaning nozzle 13 provided on at least one of the four peripheral walls 4b of the cleaning tank 4 are respectively present. By selectively switching and supplying the cleaning water to one or a plurality of discharge paths, the rotary and non-rotating cleaning nozzles 12 and 13 are prepared by selectively combining the functions of the rotating and non-rotating cleaning nozzles. In addition, a selective combination of the functions of a plurality of discharge paths that may be generated can be added, so that the cleaning water can be ejected into the cleaning tank 4 from a plurality of nozzle positions in various patterns. Since the diversity of spray density and wash water spray direction increases, the cleaning efficiency can be increased by spraying with no blind spots, and the spray modes that interfere with each other can be selectively executed so that they are different times. Is do not reduce, waste can be saved of the injection. For this purpose, it is preferable to use a non-rotating washing nozzle as a supplementary measure for the washing week point where the washing with the rotating washing nozzle is given top priority and is expected or tends to be caused by the difference in specifications such as tableware arrangement. is there. Moreover, the running water can be reduced by reducing the total amount of water necessary for the circulation according to the ratio at which the water is divided into the plurality of discharge paths at different times, and the pressure loss is further reduced.

  After cleaning, when the cleaning / drainage pump 8 is rotated in the direction of drainage, residual water from the rotary cleaning nozzle 12 and the non-rotating cleaning nozzle 13 is drained through the water distribution means 14 along with the drainage of the cleaning water in the cleaning tank 4. Then drain.

  In addition, one of the four peripheral walls 4b along which the cleaning / drainage pump 8 of the cleaning tank 4 extends is the rear wall 4b1, the side walls 4b2, 4b3, and the like, and is drawn in by a configuration facing the pipe drawing surface such as the outer wall or partition wall of the house. The piping length from the position to the cleaning / drainage pump 8 is shortened, and the four-circumferentially biased side of the cleaning / drainage pump 8 at the rear wall 4b1, the side walls 4b2, 4b3, and the front wall 4b4 is close to the retracting position. By doing so, the pipe length is further shortened. Further, if the washing / drainage pump 8 is provided near the front of the side walls 4b2, 4b3 or along the front wall, the washing / drainage pump 8 is close to the opening 1 of the dishwasher main body 2. The installation and maintenance work of the drainage pump 8 is facilitated.

  In order to execute these, in the present embodiment, the dishwasher main body 2 uses the water storage part 4e as an area not reaching the rotary cleaning nozzle 12 of the bottom part 4a of the cleaning tank 4, and supplies water to the water storage part 4e. A water supply valve 23, a heater 25 disposed in the water reservoir 4e, a drain recess 4e1 for draining water from the water reservoir 4e, a dish heater fan 27 for sending warm air into the cleaning tank 4, and a drain recess 4e1 A connected water level sensor 28 and the like are provided, and these are driven in a timely manner by the control means 31 to sequentially control each step of washing, rinsing and drying. In the dishwasher according to the present invention, the drying process is not essential. Further, as will be described in detail below, the water diversion means 14 is a valve body 32 that selectively supplies cleaning water in response to driving of the cleaning / drainage pump 8, pressurization of cleaning water by driving stop, and release of pressurization. The direct control by the control means 31 is unnecessary. However, the operation and control methods are not particularly limited, and for example, they may be switched and driven by a dedicated actuator such as a motor.

  The water diversion means 14 provided in the dishwasher main body 2 of the present embodiment is shown in FIGS. 2 to 5, and includes a valve chamber 133 that forms an inflow portion that communicates with the washing / drainage pump 8, and an upper portion of the valve chamber 133. In the illustrated example, the two discharge paths 34 and 35 shown in FIGS. 2, 4, and 6 provided in the rotary cleaning nozzle 12, and the non-rotary cleaning nozzle 13 are discharged. A plurality of outflow passages 36 and 37 communicating with the passage 36, an outflow passage 38, and wash water that is provided in the valve chamber 133 and that flows in is selectively divided into the plurality of outflow passages 36, 37, and 38. And the valve body 32 to be switched. Further, the non-rotating cleaning nozzle 13 is shown only from the connection end 13a as shown in FIG. 1 from the connection end 13a to the water diversion means 14 near the bottom 4a of the cleaning tank 4 as shown in FIG. It is assumed that at least one of a rising portion passing through a horizontal portion and a horizontal portion 13c passing through a rising portion 13b as illustrated in FIG. 1 from the connection end 13a is provided. In addition, an example of the cleaning / drainage pump 8 is shown in FIG. 7, but one of the rear wall 4b1, the side wall 4b2, 4b3 on both sides of the four peripheral walls 4b of the cleaning tank 4, and one of the front walls 4b4, In the example, the rear wall 4b1 is provided along one side in the four circumferential directions, in the specific example, along a position closer to the left side toward the rear, and the valve chamber 133 is concentric with the rotation center 11 of the rotary cleaning nozzle 12 in the water dividing means 14. The outlet port corresponding to the connecting port 12a, specifically, the rotating support part 41 that connects the outlet channels 36 and 37 at the outlet ports 36a and 37a and rotatably supports them, and the connection end of the non-rotating washing nozzle 13 13a is connected to each outflow channel 36, 37, 38 at a position between the outflow channel corresponding to 13a, specifically, the outflow channel 42 connecting the outflow channel 38, and the outflow channels 36a, 37a are used for washing and draining. The four along the pump 8 One of the walls 4b, specifically it is assumed in the adjacent wall, concrete adjacent the side of the one close to the rear wall 4b1 which is positioned in the vicinity of the left side wall 4b3 in the rear.

  As a result, the cleaning / drainage pump 8 is located at one of the rear wall 4b1 of the four-round wall 4b of the cleaning tank 4, one of the side walls 4b2, 4b3, and one of the front walls 4b4, at one side in the four-round direction. In the water distribution means 14, a rotation support portion 41 that rotatably supports the rotary cleaning nozzle 12 is positioned substantially at the center of the bottom portion 4 a of the cleaning tank 4 and is connected to the connection end 13 a of the non-rotational cleaning nozzle 13. For example, the outlet 42 is positioned in the vicinity of, for example, the adjacent wall 4b2 that is adjacent to the rear wall 4b1, which is one of the four peripheral walls 4b along which the cleaning / drainage pump 8 extends, on the one side in the circumferential direction. The washing / drainage pump 8, the water diversion means 14, and the rotation support portion 41 and the outlet 42 thereof have a diagonal line connecting the substantially central rotation center 11 of the bottom 4 a of the washing tank 4 and one corner 43. 1/4 area In addition, the valve chamber 133 located between the rotation support portion 41 and the outlet 42 is connected to the cleaning / drainage pump 8 from a position closer to the rotation support portion 41 in the ¼ area A. In addition, the rotation support part 41 and the outlet 42 are connected to the connection port 12a of the rotary cleaning nozzle 12 and the connection end 13a of the non-rotational cleaning nozzle 13 in the ¼ area A, and the bottom of the cleaning tank 4 The cleaning / drainage is performed with respect to the rotating cleaning nozzle 12 having the rotation center 11 positioned substantially at the center of 4a and at least one of the four peripheral walls 4b of the cleaning tank 4, specifically, the non-rotating cleaning nozzle 13 provided on the rear wall 4b1. Wash water can be supplied by a short pipe and passage length from the pump 8.

  As a result, the cleaning / drainage pump 8, the water distribution means 14 for selectively supplying the cleaning water, and the rotation support portion 41 and the outlet 42 of the cleaning / drainage pump 8 are approximately 1 on the one corner 43 side of the bottom 4 a of the cleaning tank 4. / 4 Within the area A, the piping structure is simple and not bulky, and the entire dishwasher 100 is reduced in size, weight, and cost. Further, the valve chamber 133 is connected to the cleaning / drainage pump 8 from a close position, and the rotation support portion 41 and the outlet 42 are connected to the rotary cleaning nozzle 12 and the non-rotational cleaning nozzle 13 in the ¼ area A. Therefore, with a short connection passage, in addition to the short pipe, the responsiveness to the driving / stopping of the cleaning / drainage pump 8 can be improved, and pressure loss can be suppressed to improve cleaning efficiency and shorten cleaning time. It will be advantageous. In addition, the running water can be reduced by reducing the total amount of water required for the circulation according to the ratio of dividing water into the plurality of discharge paths at different times, and the cleaning efficiency due to pressure loss can also be prevented.

  In the illustrated example, the rotation support portion 41, the valve chamber 133, and the outflow port 42 are arranged substantially in a straight line as shown in FIGS. 2 and 7, and the outflow port 42 is washed and drained in the vicinity of the adjacent wall 4b2. The horizontal portion 13c located near the pump 8 and passing through the rising portion 13b from the connection end 13a of the non-rotating cleaning nozzle 13 is one along which the cleaning / drainage pump 8 of at least the four peripheral walls 4b extends. It is assumed that the rear wall 4b1 is provided with an injection port 44 for ejecting cleaning water at least in the horizontal portion 13c.

  Thus, the rotation support part 41, the valve chamber 133, and the outflow port 42 are arranged substantially in a straight line, so that the outflow paths 36 and 37 from the valve chamber 133 to the rotation support part 41 and the outflow path toward the outflow port 42 are provided. 38, the valve chambers 133 extend in opposite directions as seen in FIG. 2, and there are a plurality of outflow passages extending in the opposite directions, such as outflow passages 36 and 37 directed to the rotation support portion 41. By using half of the circumference in the circumferential direction in plan view, it is possible to switch the outflow passages 36, 37, 38, etc. by the valve body 32 by individually communicating with each other within a necessary range without expansion around the valve chamber 133. . Further, the arrangement of the cleaning / drainage pump 8, the water diverting means 14, the rotation support portion 41 thereof and the outlet 42 is an amount corresponding to the ¼ region A as much as the outlet 42 is closer to the cleaning / drainage pump 8 side. The distance between the valve chamber 133 and the cleaning / drainage pump 8 is further shortened, and the horizontal portion 13c passing through the rising portion 13b from the connection end 13a of the non-rotating cleaning nozzle 13 is at least provided on the four-wall 4b. The connection distance when the cleaning / drainage pump 8 is provided along one side is shortened, and the horizontal 13c is extended to two, three, and four of the four peripheral walls 4b, or from the rising portion 13b to both sides in the circumferential direction. It can cope with the case of branching.

  Moreover, the rotation support part 41 and the connection port 12a of the rotary cleaning nozzle 12 are vertically connected above the bottom part 4a of the cleaning 4 as shown in FIGS. Thereby, the rotary cleaning nozzle 12 can connect the connection port 12a on the bottom portion 4a of the cleaning tank 4 to the rotation support portion 41 without being obstructed from the vertical direction. Further, the outlet 42 and the connecting end of the rising portion 13 b are connected vertically above the bottom of the cleaning tank 4. As a result, the non-rotating cleaning nozzle can also be connected at its connecting end 13a on the bottom 4a of the cleaning tank 4 to the outflow port 42 from the vertical direction without being obstructed elsewhere.

  The rotary cleaning nozzle 12 of the present embodiment further rotates in the normal direction due to the difference in the discharge paths 36 and 37 that are selectively supplied from the water distribution means 14 according to the drive control of the cleaning / drainage pump 8. And can be switched to reverse. Various specific methods for this are conceivable, but it is possible to use the jet energy from the jet 44 of the wash water.

  Further, as shown in FIG. 7, the valve chamber 133 in the water distribution means 14 has a connection port 133 b extending to the cleaning / drainage pump 8 side, which is substantially opposite to the rotation support portion 41, The cleaning / drainage pump 8 and the bottom of the cleaning tank 4 are connected to each other on the opposite side of the radial direction passing through the rotation center 46. Correspondingly, the portion of the peripheral wall 4b provided so that the cleaning / drainage pump 8 of the bottom 4a of the cleaning tank 4 is along, in the illustrated example, corresponding to the installation range of the cleaning / drainage pump 8 along the rear wall 4b1. A swelled portion 4f is provided, and a cleaning / drainage pump 8 is installed in a space 47 below the bulging portion 4f. A dead space is generated around the cleaning tub 4 due to the installation of the cleaning / drainage pump 8. Is preventing. This also prevents the dishwasher main body 2 from becoming large.

  Here, the water distribution means 14 will be described in detail. The water diversion means 14 includes the above-described valve chamber 133 that forms an inflow portion that communicates with the cleaning / drainage pump 8, and a plurality of the diversion means 14 that are provided on the valve chamber 133 and communicate with the plurality of discharge paths 33, 34, and 35. The diversion passage 48 having the outflow passages 36, 37, and 38, and a valve provided in the valve chamber 133 for selectively diverting the inflowing wash water into the plurality of outflow passages 36, 37, and 38. The water diversion passage 48 is integrally formed with at least one of the plurality of outflow passages 36, 37, and 38, and the water diversion passage 48 is removed from the cleaning tank 4, The valve body 32 is detachable from the cleaning tank 4. As a result, water flow cleaning of the outflow passages 36, 37, and 38, maintenance of the valve body 32 itself, and cleaning of the valve body 32 and the valve chamber 133 are facilitated, and a complicated passage structure and valve structure portion are cleaned for a long period of time. It is easy to ensure the normal function of the valve body 32 that performs a complicated switching operation. Specifically, as shown in FIG. 3, the water diversion passage 48 integrally forms a plurality of outflow passages 36, 37, 38 by ultrasonic welding or the like of the upper and lower half shells, and the whole is shown in FIG. 3. As shown in FIG. 4 and FIG. 7, the concave portion 49 provided in the bottom portion 4 a of the cleaning tank 4 is fitted so as to be detachable from above, and is mounted in a state where there is no step with the bottom portion 4 a. A valve chamber 133 having an opening 133a is fixed to the connection port 49a of the attached water diversion passage 49 so that the connection port 49a can be attached and detached through the seal packing 51 in the vertical direction. As a result, the valve chamber 133 and the water diversion passage 48 can be detached from the cleaning tank 4, so that the valve chamber 133 and the water diversion passage 48 are largely protruded into the cleaning tank 4 and do not become a dead space. In particular, if the water distribution means and the bottom portion 4a of the cleaning tank 4 adjacent to the water distribution means have substantially the same height relationship, they will be caught during cleaning and may interfere with work or be damaged by external force. Can be prevented. The seal packing 51 is mounted on the outer periphery of the connection port 48a so as to seal between the inner periphery of the opening 133a. However, the seal packing 51 may be mounted on the inner peripheral side of the opening 133a.

  The valve body 32 advances and retreats and rotates between the inflow portion of the valve chamber 133 and the plurality of outflow passages 36 and 37.38 of the water diversion passage 48, so that the washing water flowing in from the inflow portion is discharged into the plurality of outflows. The discharge paths 33, 34 and 35 for discharging through the paths 36, 37 and 38 are switched. For this purpose, as shown in FIGS. 3 and 8 (a), the connection port 48a of the diversion passage 48 is individually connected to the three outflow passages 36, 37, 38 in the diversion passage 48 from the valve chamber 133. The four water diversion openings 48a1 to 48a4 for diverting the water for maintenance are formed around the rotation center 46 of the valve body 32 and divided into equal sizes by radial ribs 48a5, and as shown in FIG. 2, the water diversion openings 48a1 8a2 communicates with the outflow path 36, the diversion opening 48a3 communicates with the outflow path 37, and the diversion opening 48a4 communicates with the outflow path 38.

  As shown in FIG. 3, the valve body 32 is rotatable about a guide shaft 60 provided integrally with the bottom of the valve chamber 133 and moves up and down to move up and down with respect to the connection port 48 a of the water diversion passage 48. A disc-shaped one that is separated from and coming in the direction, and a 1/4 range around the rotation center 46 that opens any one of the water diversion openings 48a1 to 48a4 by rotation around the guide shaft 60 when contacting the connection port 48a. Is formed as shown in FIGS. 8B and 8D. As a result, the valve body 32 contacts the connection port 48a having a plurality of water diversion openings 48a1 to 48a4 at a predetermined rotational position in response to the presence or absence of the washing water pressure due to the driving / stopping of the washing / drainage pump 8. The water distribution position where the specific one is passed through the water supply part 32a by blocking other than the specific one in contact, and the water distribution openings 48a1 to 48a4 apart from the connection port 48a are not opened. The valve body 32 is moved up and down between the non-water-dividing position, and the rotational position at which the valve body 32 closes the water-dividing openings 48a1 to 48a4 is changed with the reciprocation between the water-dividing position and the non-water-dividing position. Thus, the upper cam pair 61 and the lower cam pair 62 work alternately.

  More specifically, the lower cam pair 62 is serrated cams 62a and 62b that mesh with each other, and both have guide conditions for stabilizing the valve body 32 at each 1/4 rotation position. On the other hand, the upper cam pair 61 is a chevron cam 61a and a radial cam 61b formed by the lower end of the rib 48a5 that partitions the water diverting ports 48a1 to 48a4. When pushed up by water pressure, the slope of the chevron cam 61a abuts from the midway position of the radial cam 61b and has a function of stabilizing the valve body 32 by rotating it less than 1/4 times to the water distribution position. When the valve body 32 is dropped from the water splitting position, the serrated cams 62a and 62b of the lower camta pair 62 are engaged with each other at a midway position between the teeth, and the valve body 32 is rotated by less than 1/4 turn by the upper cam pair 61. It has a function to rotate and stabilize the rest up to 1/4 rotation.

  As a result, the valve body 32 is rotated by less than ¼ rotation from the stable rotational position before the upward movement every time the valve body 32 moves upward to the water diversion position, and the valve body 32 once moves up to the water diversion position and then falls. The meshing position of the pair 62 is changed so as to be stabilized to the next 1/4 rotation position. As a result, one of the plurality of water distribution openings 48a1 to 48a4 is sequentially opened, and water is distributed from the water distribution opening 48a1 to the discharge path 33 of the rotary cleaning nozzle 12 through the outflow path 36 of the rotary cleaning nozzle 12, Water splitting from the water splitting opening 48a2 to the discharge path 33 of the rotary cleaning nozzle 12 via the outflow path 36 of the rotary cleaning nozzle 12, water splitting from the water splitting opening 48a3 to the discharge path 34 via the outflow path 37, water splitting opening 48a4 Water distribution to the discharge path 35 of the non-rotating cleaning nozzle 13 through the outflow path 38 is sequentially repeated.

  Here, in the control in which the control means 31 keeps the driving time between the stoppage of the cleaning / drainage pump 8, the cleaning liquid from the cleaning / drainage pump 8 is discharged from the discharge path 36 of the rotary cleaning nozzle 12 through the diversion openings 48 a 1, 48 a 2. The cleaning liquid from the cleaning / drainage pump 8 is supplied to the discharge path 37 of the rotary cleaning nozzle 12 through the diversion opening 48a3 by supplying the rotary cleaning nozzle 12 forward and rotating the rotary cleaning nozzle 12 forward. This is twice as long as the time for reverse cleaning and the time for supplying to the discharge path 35 of the non-rotating cleaning nozzle 13 from the diversion opening 48a4 through the outflow path 38 and for cleaning.

  This is because the cleaning water sprayed from the rotary cleaning nozzle 12 can easily reach the concave portion on the inner side where the food of the tableware is placed. For example, as illustrated in FIG. 9, the bottom of the cleaning tank 4 of the rotary cleaning nozzle 12 The inside of the tableware 72 is opposed to each other with a straight line 71 passing through the rotation center 11 located substantially at the center of the 4a and perpendicular to the two circumferential walls 4b1 and 4b4 of the cleaning tank 4 facing each other. In contrast to the optimal design of the tableware basket 6 so that it is placed in a symmetrical orientation that fits, the spraying conditions so that the optimally arranged tableware 72 and the like are sufficiently cleaned by the forward rotation of the rotary cleaning nozzle 12 It corresponds to the fact that it is optimally designed.

  In other words, normal rotation cleaning of the rotary cleaning nozzle 12 is usually sufficient, but cleaning to a weak point caused by shortening the cleaning time, increasing the amount of objects to be cleaned, variation in the arrangement of objects to be cleaned, etc. The auxiliary is supplemented by reverse cleaning, so that cleaning can be performed in a shorter time and without remaining. 9, when the tableware basket 6 is designed so that one side of the tableware 72 arranged symmetrically so that the inside faces each other is large and the other side is small, in the case shown in FIG. When the tableware on the front side is large and the tableware on the rear side is small, a space is formed above the area where the small tableware is arranged. In this space, a table basket 7 is provided in the washing tank 4 as shown in FIG. However, it is difficult and wasteful to make this tableware basket area the proper cleaning range of the rotary cleaning nozzle 12, and this is used as a weak point of the rotary cleaning nozzle 12 and the cleaning load of the rotary cleaning nozzle 12. The non-rotating cleaning nozzle 13 described above can be assisted mainly by the horizontal portion 13c, and the injection port 44 is within a range corresponding to the tableware basket 7 of the rising portion 13b. To enhance the cleaning of the auxiliary function by providing. In this sense, it is preferable that the horizontal portion 13c extends to the side wall 4b3 opposite to the side wall 4b2 provided with the rising portion 13b, and it is also possible to extend to the front wall 4b4. Due to such an auxiliary function of cleaning, the horizontal portion 13c is strongest on the entire periphery of the four peripheral walls 4b, and is provided separately from the extending portion of the horizontal portion 13c on both sides in the circumferential direction. In this case, if the height of the horizontal portion 13c branched to both sides and the extension path are made different, the difference in the cleaning load differs depending on the location in the height direction and the plane direction in the wide cleaning area in the cleaning tank 4. It is easy to cope with.

  However, in the illustrated example, the water distribution through the four water distribution openings 48a1 to 48a4 is made such that the number of the discharge paths 35 of the non-rotating cleaning nozzle 13 is one, and the existing discharge path 33 is used. , 34, 35, and the added four parts, when the cleaning / drainage pump 8 is driven and controlled, the water splitting time to the discharge path 33 of the rotary cleaning nozzle 12 and the rotary cleaning nozzle 12 are controlled. The discharge path 34, the discharge path 35 of the non-rotating cleaning nozzle 13 and the water distribution time to the additional discharge path are the same.

  However, the rotation direction is switched between forward rotation and reverse rotation depending on the difference between the discharge paths 33 and 34 of the rotary cleaning nozzle 12 which is selectively supplied from the water diversion means 14 according to the drive control of the cleaning / drainage pump 8. In this case, the control means 31 can freely control the driving of the cleaning / drainage pump 8 so that the normal rotation time and the reverse rotation time are in a predetermined ratio. For this purpose, the control means 31 may control the ratio between the normal rotation time and the reverse rotation time of the rotary cleaning nozzle 12 according to the ratio of the respective drive times during the normal rotation and reverse rotation of the cleaning / drainage pump 8. In the relationship where the cleaning effect does not change between forward rotation and reverse rotation, the normal rotation time and the reverse rotation time can be set to be equal.

  However, the ratio of the water diversion time from the discharge passages 36, 37, 38, the additional portion, and the additional portion, and the corresponding diversion openings 48a1 to 48a4 and the additional portion are determined by the control means 31. It can be set and controlled freely according to the ratio of the driving time of the washing / drainage pump 8 with the diversion control.

  In the case of controlling the ratio between the forward rotation time and the reverse rotation time of the rotary cleaning nozzle 12, a rotation direction detection unit of the rotary cleaning nozzle 12 is provided, and the control unit 31 rotates the rotation direction between the forward rotation and the reverse rotation. Based on the output from the detection means, the normal rotation time and the reverse rotation time can be controlled to have a predetermined ratio.

  In addition, separately, a water flow detection means for detecting the flow of the cleaning water supplied to the two discharge paths 33 and 34 is provided, and the control means 31 is provided with a water flow detection means for the forward rotation and the reverse rotation of the rotary cleaning nozzle 12. Based on the output, the forward rotation time and the reverse rotation time can be controlled to be a predetermined ratio.

  In addition, a valve body position detecting means for detecting the supply water switching position of the cleaning water to the two discharge paths 33 and 34 via the two outflow paths 36 and 37 of the valve body 32 is provided. Based on the output from the valve body position detection means at the time of forward rotation and reverse rotation of the nozzle 12, the forward rotation time and the reverse rotation time can be controlled to be a predetermined ratio.

  In the illustrated example, the water distribution means 14 further rotatably supports the connection port 12a of the rotary cleaning nozzle 12 by the rotation support portion 41 at one end of the water distribution passage 48, thereby showing two outflow passages 36 and 37. As shown in FIG. 2, in order to communicate with the two discharge paths 33, 34 arranged so as to cross between the both ends of the rotary cleaning nozzle 12 and cross at the rotation center axis 11 portion in plan view, around the rotation center 11. The flow outlet 37a from the outflow path 37 to the discharge path 37 and the outflow path 36a from the outflow path 36 to the discharge path 33 are arranged in a flow having a concentric inner and outer double passage structure around the rotation center 11 as shown in FIG. The outlets 36 a and 37 a are opened in the rotation support portion 41, and the inlets 12 a 1 and 12 a 2 of the discharge passages 33 and 34 are connected as inlets 12 a 1 and 12 a 2 having a concentric inner and outer double passage structure around the rotation center 11. The outlets 36a and 37a are connected to the inlets 12a1 and 12a2 by opening the opening 12a and connecting the connecting port 12a to the rotation support portion. The inlets 12a1 and 12a2 of the inner and outer double passage structures are connected to the discharge path. In plan view with the discharge paths 33 and 34 in the cross region 33 and 34, the two introduction portions 12 a 3 and 12 a 4 that are arranged in a point-symmetrical manner around the rotation center 11 are communicated with each other. As a result, the flow of the cleaning water during the water splitting from the outflow path 36 of the diversion passage 48 to the discharge path 33 of the rotary cleaning nozzle 12 also passes from the outflow path 37 of the diversion path 48 to the discharge path 34 of the rotary cleaning nozzle 12. The flow of cleaning water during water separation is stable without pulsation or disturbance due to the inner and outer double passage structure concentric with the center of rotation, regardless of the rotation of the rotary cleaning nozzle 12 and the difference in the rotation position. As a result, a substantially uniform laminar flow state around the rotation center 11 is introduced into each of the discharge passages 33 and 34, and the rotation center in the cross region around the rotation shaft 11 is introduced to each of the discharge passages 33 and 34. 11 is introduced without breaking the rotational balance of the rotary cleaning nozzle 12 through the two introduction communicating portions 12a3 and 12a4 each having a point-symmetrical arrangement with the center of 11 as the center. The vibration or pulsation rotated stably without such irregular rotation, the cleaning effect is not or cause uneven by the rotation position lowered by the rotation. For this purpose, it is preferable that the passage cross-sectional areas for dividing water from the outflow passages 36 and 37 to the discharge passages 33 and 34 are designed to be equal to each other.

  Further, as shown in FIG. 4, the rotation support portion 41 has a diversion passage 48 having the rotation support portion 41 extending from the extending path range B extending along the bottom portion 4 a of the cleaning tank 4 in a lateral direction from the valve chamber 133. An upward bending path range C bent toward the center of rotation is formed, and at least the outer corner C1 side of the bending circuit range C has a smooth curved shape and has a curved height region H for the bending. Yes. As a result, the wash water divided into the outflow passages 36 and 37 of the diversion passage 48 is directed upward upward without any turbulence through the smooth bending path range C from the lateral circuit range B. The inlet 12a1 is smoothly guided toward the outflow ports 36a and 37a that form a concentric inner / outer double passage structure at the rotation center 11 of the rotation support portion 41, and also forms an inner / outer double passage structure that is also vertical and concentric with the rotation center 11. , 12a2 flows straight up without any collision, bias or disturbance, and is introduced into the discharge passages 33, 34 through the introduction communication ports 12a3, 12a4 in a balanced manner around the rotation center 11, so that the rotation balance of the rotary cleaning nozzle 12 is balanced. , Stability is further improved. For example, if the cross-sectional shape of the diversion passage 48 is substantially circular, the curvature of the inner surface of the bending path range C should be approximately ½ or more of the inner diameter to suppress the occurrence of turbulence and reduce pressure loss. For example, the inner diameter of the water diversion passage 48 is 20 mm, and the curvature of the bending path range C is preferably 10 mm or more. Further, if the inner surface of the inner corner of the bending path range C is angular, turbulence and cavitation are likely to occur on the downstream side. Therefore, the curvature may be sufficiently smaller than the outer corner side, but it is desirable to have a curved surface in the axial direction. .

  Therefore, in this example, the laterally extending path range B has a portion B1 that is inclined downward from the connection height position H0 to the valve chamber 133 toward the rotation support portion 41, Due to the downward inclination of the extension path from the valve chamber toward the rotation support portion, a curved height region H for making the bent path into a curved shape can be secured in parallel with the height region H1 of the valve chamber installation. The bulking from the wall of the washing tank along which it is further suppressed. However, since the washing water remains in a portion lower than the connection height position H0, it is preferable to drain the drain together with the valve chamber 133 in a timely manner. However, the lower end wall 48a of the curved height region H1 is connected to the valve chamber 32 by extending the extending path range B at a height equal to or higher than the horizontal direction as indicated by a virtual line in FIG. Therefore, regardless of the height or shape of the top wall 48c, it is possible to prevent the wash water from flowing into the valve chamber 133 and remaining in the middle, and to perform drain treatment at one location of the valve chamber 133. Can do.

  Of course, in order to enhance the cleaning effect by providing a plurality of cleaning nozzles, at least one of them is the rotary cleaning nozzle 12, and it is a preferred embodiment to be arranged and used preferentially in the center of the bottom 4a. The non-rotating cleaning nozzle 13 having at least the rising portion 13b and the horizontal portion 13c is selectively used in combination with one or a plurality of other cleaning nozzles to enhance the cleaning effect. You can also

  In this case, as shown in FIG. 7, the rising portion 13 b rises to a position where the connecting end 13 a as one end is higher than the washing / drainage pump 8 at a position away from the washing / drainage pump 8 in plan view. The horizontal portion 13c is connected to one end portion of the rising portion 13b, and is provided in at least one of the four circumferences 4b via at least the upper portion of the cleaning / drainage pump 8 in a plan view. If the washing / drainage pump 8 is driven in the water supply direction after supplying water to the washing tub 4 of the dishwasher main body 2, the washing / drainage pump 8 sucks and pressurizes the washing water in the washing tub 4 and supplies it to the water dividing means 14. At least one of the delivery and water distribution means 14 is a non-rotating cleaning nozzle 13 and the other is simultaneously directed toward one or a plurality of discharge paths 33, 34, 35 of a plurality of cleaning nozzles such as a rotating cleaning nozzle 12. Since the water is split and selectively supplied at different times, a cleaning action by a plurality of cleaning nozzles including at least one non-rotating cleaning nozzle 12 and one or a plurality of discharge paths 33, 34, and 35 thereof is selected. In combination, the cleaning object can be washed in various patterns from a plurality of nozzle positions into the washing tub 4 to wash objects to be cleaned such as the dishes 72 placed in the tableware baskets 6 and 7. .

  In addition, the non-rotating cleaning nozzle 13 is supplied with the cleaning water from the cleaning / drainage pump 8 provided around the bottom portion 4a of the cleaning tank 4 by the water dividing means 14 and supplied to the horizontal portion 13c through the rising portion 13b. The horizontal portion 13c is provided on at least one of the four peripheral walls 4b of the cleaning tank 4 via or above the cleaning / drainage pump 8 disposed along the horizontal portion 13c. The length of the water supply path including the rising portion 13c separated from the cleaning / drainage pump 8 through the water diverting means 14 from the cleaning / drainage pump 8 is shortened by a route that does not interfere with the cleaning / drainage pump 8. Can do. Further, the horizontal portion 13c is positioned at a required predetermined height of the cleaning tank 4 by the rising portion 13b, and can be used in combination with other cleaning nozzles.

  Further, as shown by phantom lines in FIG. 7, the rising portion 13b is constituted by a plurality of discharge paths 35, 35a, and the horizontal portion 13c and its discharge paths 35, 35a are respectively associated with the plurality of discharge paths 35, 35a. And a plurality of discharge paths 35 and 35a of the rising portion 13n are integrally formed at least at the connection end 13a, and are integrally formed corresponding to each of the plurality of discharge paths 35 and 35a. The outlets 42 and 42a can be connected and separated at the same time. As a result, the non-rotating cleaning nozzle 13 is provided with a plurality of discharge passages 35 and 35 a to increase the cleaning water injection area and enhance the cleaning effect, while the connection with the water dividing means 14 is connected to the water dividing passage 48. The outlets 42 and 42a can be connected and disconnected simultaneously, that is, in one behavior.

  As shown in FIG. 10, the valve chamber 133 can be integrally formed with the bottom 4a of the cleaning tank 4 to reduce the number of parts and the number of assembly steps, thereby further reducing the cost. Specifically, it is integrally formed so as to be connected to the bottom portion of the concave portion 49 into which the water diversion passage 48 of the bottom portion 4 a of the cleaning tank 4 is fitted by the opening 133 a portion of the valve chamber 133. Other structures are the same as the water diversion means 14 formed by the water diversion passage 48, the valve chamber 133, and the valve body 32 of the previous example, and common members and portions are denoted by the same reference numerals and description thereof is omitted. .

  INDUSTRIAL APPLICABILITY The present invention is practically used in a dishwasher having a drawer-type washing tank, and combines a rotary washing nozzle and a non-rotational washing nozzle, and simultaneously or simultaneously to each discharge path provided in one or a plurality of them. Even if the cleaning area is wide and the cleaning time is shortened by selective water splitting, a sufficient cleaning effect is exhibited.

Sectional drawing for demonstrating the schematic structure of the dishwasher which concerns on this invention. The perspective view which shows the relationship between the water distribution means used for the dishwasher, and a rotation washing nozzle. The cross section which shows the water diversion | division function part using the valve chamber of the water diversion means used for the dishwasher. The principal part sectional drawing which shows the relationship between the installation structure of the water diversion means of the dishwasher, and a rotation and a non-rotation nozzle. The horizontal direction sectional view which shows the relationship between the outflow path in the water diversion means used for the dishwasher, and its outflow port. The partial top view which looked at the principal part of the rotary washing nozzle used for the same dishwasher, and was seen in cross section. The overhead view in the washing tank of the dishwasher. Explanatory drawing which decomposes | disassembles thru | or expand | deploys and shows the valve body operation | movement mechanism between a water diversion chamber and a water diversion channel | path (a)-(d). The perspective view which shows the mounting state of the tableware basket and tableware used for the dishwasher. The perspective sectional view which shows another example of a relationship between the water dividing means used for the dishwasher, and a washing tank.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 Dishwasher 1 Opening part 2 Dishwasher main body 3 Opening 4 Washing tank 4a Bottom part 4b Four peripheral walls 4b1 Rear wall 4b2, 4b3 Side wall 4b4 Front wall 4f Swelling part 47 Spaces 6, 7 Dish basket 8 Washing / drainage pump 11 Rotation center 12 Rotary cleaning nozzle 12a Connection port 12a1, 12a2 Inlet port 12a3, 12a4 Inlet communication port 13 Non-rotating cleaning nozzle 14 Water diverting means 23 Water supply valve 25 Heater 26 Drain pump 27 Fan heater 31 Control means 32 Valve body 133 Valve chambers 33, 34 , 35, 35a Discharge path 36, 37, 38 Outflow path 36a, 37a, 42, 42a Outlet 41 Rotation support 44 Injection port 47 Space 48 Dividing path 72 Tableware

Claims (4)

A dishwasher body having an opening at the front,
A washing tub that is provided so as to be freely drawable with respect to the dishwasher main body and has an opening on the upper side,
A tableware basket that is housed in this washing tank and on which objects to be cleaned such as tableware are placed,
A washing pump for pressurizing washing water provided at a position along at least one of the rear wall of the four circumferential walls of the washing tank, one of the side walls on both sides, and the front wall;
Water distribution means for selectively supplying cleaning water pressurized by the cleaning pump to a plurality of discharge paths;
A plurality of cleaning nozzles having one or a plurality of the discharge paths and spraying cleaning water from the spray ports to the object to be cleaned;
The water dividing means is
A valve chamber forming an inflow portion communicating with the washing pump;
A water diversion passage having a plurality of outflow passages connected to the valve chamber and communicating with the plurality of discharge passages;
A valve body that is provided in the valve chamber and switches to selectively divert wash water flowing into the plurality of outflow passages;
At least one of the plurality of cleaning nozzles is
A horizontal portion having an injection port for ejecting washing water;
A non-rotating cleaning nozzle having a rising portion for guiding cleaning water to the horizontal portion,
The rising portion is
One end is raised to a position higher than the washing pump at a position removed from the washing pump in plan view,
The horizontal portion is
Connected to one end of the rising portion,
Provided in at least one of the four circumferential walls via at least the upper part of the washing pump in a plan view or located above ,
Further, at least one of the plurality of cleaning nozzles is a rotary cleaning nozzle having a rotation center located substantially at the center of the bottom of the cleaning tank,
Furthermore, the water dividing means is provided on the central side of the cleaning tank of the cleaning pump,
The valve chamber opens a connection port with the cleaning pump on the opposite side of the cleaning pump,
A substantially 1/4 region having a diagonal line connecting the cleaning pump, the water distribution means, and the rising portion with a rotation center of the rotary cleaning nozzle and one corner formed by two of the four walls. Dishwasher placed within . Before SL diversion passage, together it comprises at least one integrally formed of the plurality of outlet channel, the other end portion of the rising portion of the non-rotating cleaning nozzle, the outlet channel which is integrally formed on said diversion passage The dishwasher according to claim 1, wherein the dishwasher is configured to be connectable in an up-down direction to an outlet provided to open upward.   The rising portion is configured by a plurality of discharge paths, and a horizontal portion and a discharge path thereof are provided corresponding to the plurality of discharge paths, respectively, and a plurality of discharge paths of the rising portion are provided corresponding to the respective discharge paths. The dishwasher according to claim 1 or 2, wherein the dishwasher is provided so as to be connected to and separated from a plurality of outlets of the diversion passage at the same time. Providing a bulging portion that bulges the bottom of the washing tank upward along at least one of the rear wall, one of the side walls on both sides, and the front wall;
Arranging at least one of the cleaning pump and a drive motor for driving the cleaning pump in a space outside the cleaning tank below the bulge,
The non-rotating cleaning nozzle is provided with a horizontal portion in at least one of the rear wall, one of the side walls on both sides, and the front wall along the bulging portion,
The rising portion is connected to an outlet that is opened upward from the height of the bottom of the cleaning tank in the vicinity of the cleaning pump in plan view of the diversion passage, and is connected to the rear wall, one of the side walls on both sides, the front The dishwasher according to any one of claims 1 to 3, wherein the dishwasher stands at at least one location in the vicinity of at least one of the part walls.