JP4475161B2 - dishwasher - Google Patents

Description

  The present invention relates to a dishwasher for cleaning dishes by spraying washing water onto the dishes stored in a washing tank.

  2. Description of the Related Art Conventionally, dishwashers for general households have been used in which washing water is sprayed onto an object to be cleaned such as dishes arranged in a dish basket installed in a washing tank. At this time, the arrangement of the injection unit for injecting the cleaning water is an important element so that the cleaning water is uniformly injected onto the many objects to be cleaned arranged in the tableware basket. In particular, when the tableware basket is provided in a plurality of stages so that a large number of objects to be cleaned can be accommodated in the cleaning tank, the cleaning water needs to be evenly sprayed on the objects to be cleaned in each stage. The cleaning water sprayed from below on the objects to be cleaned contained in the upper-stage tableware basket does not sufficiently reach the objects to be cleaned on the lower stage, and the cleaning water does not spread sufficiently. The cleaning ability with respect to the cleaning object is reduced.

  In order to solve these problems, there has been known a dishwasher in which a plurality of spraying units are arranged so that cleaning water can be sprayed onto an object to be cleaned from multiple directions in a cleaning tank. However, in order to be able to inject cleaning water from multiple injection units, it is necessary to increase the amount of water supplied to the cleaning tank, which increases the heating time for heating the cleaning water, and increases the operation time and power consumption. This increases the amount of water used, which necessitates an increase in the size of the cleaning pump, leading to an increase in cost and problems such as increased noise and vibration associated with the use of a large amount of cleaning water.

  Thus, a dishwasher has been developed that is configured so that the amount of water supply does not increase even if a plurality of injection units are provided to improve the cleaning performance, and the above-described problems do not occur (see, for example, Patent Document 1). ).

In this type of dishwasher, as shown in FIG. 6, the plurality of jetting units are provided with rotary cleaning nozzles 101 and 102 below the cleaning tank 106, and a fixed cleaning nozzle 103 on the side wall of the cleaning tank 106. The cleaning water pressurized by the cleaning pump 104 is sequentially switched from the water diversion device 105 and supplied to each of the cleaning nozzles 101 to 103. In this way, since the cleaning water is sequentially switched and supplied to the respective cleaning nozzles 101 to 103, the cleaning water is injected to a large number of objects to be cleaned 107 without increasing the amount of water supply.
JP 2004-267661 A

  However, in such a conventional dishwasher, when the object to be cleaned arranged in the upper stage is washed with the fixed washing nozzle 103, the fixed washing nozzle 103 can apply the washing water only to a certain range. There was a problem that the washing water could not be uniformly applied to the shape and installation posture of the tableware, and sufficient washing performance could not be obtained.

  The present invention solves the above-described conventional problems, and an object thereof is to provide a dishwasher that achieves both improved cleaning performance and space saving by properly combining a rotary cleaning nozzle and a fixed cleaning nozzle. .

In order to achieve the above object, the present invention sprays cleaning water onto a cleaning tank having an opening on the front surface, upper and lower tableware disposed in the cleaning tank, and an object to be cleaned contained in the tableware basket. A plurality of jetting units and a pump device for supplying cleaning water to the plurality of jetting units, wherein the upper table basket has portions having different heights when disposed in the cleaning tank, The portion includes a rotating nozzle and a fixed nozzle that communicate with each other , the rotating nozzle sprays toward a lower portion of the upper table basket, and the fixed nozzle is provided on the side wall of the cleaning tank, It is a dishwasher comprised so that it may spray toward the part where an arrangement position is higher among upper tableware baskets . As a result, in a single spraying unit, a place where various dishes are placed on the tableware basket is washed with a rotary washing nozzle, and a place where the kind of tableware and the installation posture are fixed to a certain extent, a fixed washing nozzle By performing the cleaning, the cleaning performance can be ensured and the space can be saved.

  The dishwasher of the present invention can achieve both improved cleaning performance and space saving by appropriately combining a rotary cleaning nozzle and a fixed cleaning nozzle.

The first invention includes a cleaning tank having an opening on the front surface, upper and lower tablewares disposed in the cleaning tank, and a plurality of injection units for injecting cleaning water to an object to be cleaned contained in the tableware basket. , a pump device for supplying washing water to the plurality of ejection portions, the upper dishes basket has a height different parts when disposed within the cleaning tank, a plurality of ejection portions, communicating with each other A rotating nozzle that injects toward a lower part of the upper table basket, and the fixed nozzle is provided on the side wall of the washing tub, by arrangement positions is configured to perform injected toward the higher portion, in one injection unit, for places such as a variety of dishes on dishes basket is placed, washed by rotary washing nozzle Some kind of tableware and installation attitude The wait was portions, by performing the cleaning by the fixed cleaning nozzle, while securing the cleaning performance, it is possible to reduce the space allowed. In addition, it is possible to clean dishes having various shapes without reducing the space for storing objects to be cleaned in the cleaning tank.

According to a second invention, in the first invention described above, the fixed nozzle is provided on the rear surface facing the opening in the cleaning tank, so that the usability can be improved without being obstructed when the object to be cleaned is installed. it can.

According to a third aspect of the present invention, in the first or second aspect of the present invention, the rotating nozzle extends from the fixed nozzle toward the center of the cleaning tank, so that the cleaning water is uniformly sprayed regardless of the installation location of the object to be cleaned. be able to.

In a fourth aspect based on the third aspect , the rotating nozzle extends from the rear to the front in the cleaning tank, which may interfere with the setting of the object to be cleaned and when the tableware basket is taken in and out. It is possible to improve usability.

In a fifth aspect of the present invention, in the first to fourth aspects of the present invention, the rotating nozzle is detachably connected to the fixed nozzle and is connected so that the washing water can communicate with the rotating nozzle. The rotating nozzle can be removed, so that the installation property of the tableware can be improved, and the cleaning property can be improved because the table can be removed and cleaned.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, the thing of the same structure as a prior art example attaches | subjects the same code | symbol, and abbreviate | omits description. Further, the present invention is not limited by this embodiment.

(Embodiment 1)
1 and 2 show a state in which an object to be cleaned 10 is accommodated in the washing tub 2 of the dishwasher main body 1 according to the first embodiment of the present invention as seen from the front side and the side surface. Inside, the lower tableware basket 8 and the upper tableware basket 9 which accommodates the to-be-cleaned object 10 are each arrange | positioned so that it can pull out in the front-back direction. The upper table basket 9 is arranged at a position that is one step lower than the right side, so that the left side is a space where various dishes can be placed. It is a space for placing cylindrical tableware.

  A first rotary cleaning nozzle 3 and a second rotary cleaning nozzle 4 are disposed below the cleaning tank 2, and a fixed cleaning nozzle 5 formed in a substantially cross shape is disposed on the back of the cleaning tank 2. Has been. A rotary cleaning nozzle conduit 6 extending forward from the fixed cleaning nozzle 5 is connected to the left side of the fixed cleaning nozzle 5, and further at the tip of the rotary cleaning nozzle conduit 6 below the upper left side of the upper tableware basket. A third rotary cleaning nozzle 7 is disposed at the position. A third rotary cleaning nozzle communicated with the first rotary cleaning nozzle 3, the second rotary cleaning nozzle 4, the fixed cleaning nozzle 5, and the fixed cleaning nozzle 5 with respect to the object to be cleaned 10 accommodated in the cleaning tank 2. The cleaning object 10 is cleaned by spraying cleaning water from 7.

  A drainage port 12 communicating with the suction side of the cleaning pump 11 is provided at the bottom of the cleaning tank 2, and a drainage filter 13 for collecting leftovers and a heater 14 for heating the cleaning water are arranged in the drainage port 12. It is installed. The washing water that has passed through the leftover filter 13 is sucked into the washing pump 11 and pressurized, and the first and second rotary washing nozzles 3 and 4, the fixed washing nozzle 5, and the fixed washing nozzle 5 Washing water is jetted from the third rotating washing nozzle 7 that is in communication.

  In the dishwasher 1 having the above-described configuration, the lower table basket 8 and the upper table basket 9 in which the door 16 is opened and the object 10 to be cleaned are accommodated are accommodated in the washing tub 2, and the detergent is added to the washing tub 2 by the door 16. When the front opening is closed, the operation is started, and the cleaning process, the rinsing process, and the drying process are executed in this order.

  First, the water supply valve is operated to supply a predetermined amount of cleaning water into the cleaning tank 2. The supplied cleaning water is heated by the heater 14, pressurized by the cleaning pump 11, and communicated from the water dividing means 15 to the first and second rotary cleaning nozzles 3 and 4, the fixed cleaning nozzle 5 and the fixed cleaning nozzle 5. The cleaning water is selectively supplied to the third rotary cleaning nozzle 7. Here, the water distribution means 15 includes the first rotary cleaning nozzle 3, the first rotary cleaning nozzle 3 and the second rotary cleaning nozzle 4, the second rotary cleaning nozzle 4, the fixed cleaning nozzle 5, and a third communicating therewith. The rotary cleaning nozzle 7 operates in order of switching the supply of the cleaning water every predetermined time.

  The first, second, and third rotary cleaning nozzles 3, 4, and 7 are rotated by a jet flow in which the supplied cleaning water is ejected from the injection port, and the rotating cleaning water is jetted to inject the lower dish basket 8 and the upper stage. The to-be-cleaned object 10 accommodated in the tableware basket 9 is washed. The fixed cleaning nozzle 5 sprays cleaning water mainly from the injection holes arranged horizontally below the upper tableware basket 9 to the right side of the upper tableware basket 9 to accommodate the inner surface of the object to be cleaned 10 stored downward. In addition, the outer surface of the object to be cleaned 10 is cleaned with the cleaning water sprayed in a fan shape in a substantially horizontal direction from the cleaning water injection port 20a opened at the top. Further, the third rotary cleaning nozzle 7 communicating with the fixed cleaning nozzle 5 cleans mainly the left side of the upper table basket 9.

  When washing the object 10 to be washed contained in the upper table basket 9 using a fixed washing nozzle, it was difficult to maintain stable washing performance for various tableware shapes and installation postures. In the embodiment, by disposing the third rotary cleaning nozzle 7 below the left side of the upper table basket 9 which is a space where various tableware can be placed, the cleaning water is unevenly distributed with respect to various tableware shapes and installation postures. It can be applied without any problem, and the cleaning performance can be maintained.

On the other hand, the right side of the upper tableware basket 9 is mainly used as a space for installing cylindrical tableware such as a cup or a cup of water, and since the installation posture and tableware shape are determined to some extent, the fixed cleaning nozzle 5 also ensures cleaning performance. It is possible to save space. Moreover, about the installation property of the to-be-cleaned object 10 by adding the 3rd rotation washing nozzle 7, by extending the rotation washing nozzle water conduit 6 from back to the front toward the washing tank 2 center, it is to be washed. The installation property of the object to be cleaned 10 is ensured without being in the way when the object 10 is installed.

  The cleaning water sprayed from the first, second and third rotary cleaning nozzles 3, 4, 7 and the fixed cleaning nozzle 5 in the cleaning tank 2 cleans the object to be cleaned 10 and flows down to the lower part of the cleaning tank 2. The first and second rotary cleaning nozzles 3, 4 are fixed by being collected by the drain port 12 and heated again by the heater 14, passing through the leftover filter 13, and again from the cleaning pump 11 through the water distribution means 15. It is fed to the third rotary cleaning nozzle 7 that communicates with the cleaning nozzle 5 and the fixed cleaning nozzle 5. The leftovers dropped from the object to be cleaned 10 after the washing water is jetted are collected in the leftover filter 13. Further, the temperature of the cleaning water is detected by the temperature sensor 17, and when the temperature exceeds a predetermined temperature, the energization to the heater 14 is stopped, so that a temperature suitable for cleaning is maintained.

  When the cleaning process for a predetermined time is completed, the cleaning water containing dirt is discharged from the drain pump 18 to the outside of the apparatus, and the cleaning water is newly supplied into the cleaning tank 2. The supplied cleaning water is sprayed from the first and second rotary cleaning nozzles 3 and 4, the fixed cleaning nozzle 5 and the third rotary cleaning nozzle 7 communicating with the fixed cleaning nozzle 5 by the operation of the cleaning pump 11, A rinsing process for washing away detergent, leftovers, etc. adhering to the cleaning object 10 is executed. In this rinsing process, after a predetermined time of operation, the washing water from which the detergent and the remaining vegetables have been washed out by rinsing is discharged from the drainage pump 18 to the outside of the machine, and new washing water is supplied into the washing tank 2 and rinsed again. The process of performing the operation is executed three times, and the rinsing process is completed by discharging the wash water out of the machine.

  Subsequently, a drying process is executed, and the outside air fed into the cleaning tank 2 from a blower (not shown) is heated by the heater 14, and evaporation of water droplets adhering to the object to be cleaned 10 by both effects of blowing and heating is performed. Promoted. After this drying process is carried out for a predetermined time, the operation is stopped and all the steps of washing the dishes are completed.

  Feeding control of washing water into the washing tank 2 in each of the above processes, driving control of the washing pump 11 and the drainage pump 18, energization control to the heater 14 based on temperature detection by the temperature sensor 17, driving control of the blower in the drying process, etc. Is implemented by a control device (not shown) provided in the dishwasher body 1.

  FIG. 3 shows a state in which the lower table basket 8 and the upper table basket 9 are taken out from the cleaning tub 2 as viewed from the front side. The third table communicating with the fixed cleaning nozzle 5 and the fixed cleaning nozzle 5 is shown in FIG. The form of the rotary cleaning nozzle 7 is shown in an easy-to-understand manner. The fixed cleaning nozzle 5 is formed in a substantially cross shape by a vertical portion 5 a and a horizontal portion 5 b formed in a flat cylindrical shape, and the lower end of the vertical portion 5 a is connected to a water distribution means 15. The horizontal part 5b is formed in a shape in which the upper table basket 9 is provided with steps having different heights on the left and right, and the horizontal part 5b has different height positions on the left and right.

  Further, a rotary cleaning nozzle conduit 6 extending forward from the fixed cleaning nozzle 5 is connected to the left side of the horizontal portion 5b, and further at the tip of the rotary cleaning nozzle conduit 6 and below the upper left side of the upper tableware basket 9 A third rotary cleaning nozzle 7 is disposed in the vicinity of the center. In addition, the rotary cleaning nozzle conduit 6 is detachably connected to the fixed cleaning nozzle 5, and when storing high tableware or the like on the left side of the lower tableware basket 8, the rotary cleaning nozzle conduit 6 is removed. The installation property of the article 10 to be cleaned in the lower tableware basket 8 can be improved.

FIG. 4 shows in detail the connection configuration between the fixed cleaning nozzle 5 and the rotary cleaning nozzle water conduit 6. The rotary nozzle water conduit 6 has a substantially hollow cylindrical shape, and four claw portions 60a are provided every 90 degrees on the outer periphery of one end portion thereof, while the connection portion of the fixed cleaning nozzle 5 is connected to the claw portion 60a. Four corresponding groove portions 50a are arranged. After the claw part 60a and the groove part 50a are inserted with their hole positions aligned from the front, the claw part 60a and the groove part 50a are rotated to the right by about 15 degrees, and locked by the protrusion 60b getting over the protrusion 50b. The nozzle 5 is connected in a watertight manner.

  In the horizontal portion 5b of the fixed cleaning nozzle 5, a plurality of cleaning water injection ports 20 for injecting cleaning water to the object to be cleaned 10 accommodated in the upper tableware basket 9 are opened, and the object to be cleaned accommodated in the upper tableware basket 9 is opened. Washing water is jetted upward toward the inner surface of the object 10. Further, a cleaning water injection port 20a is opened above the vertical portion 5a, and the cleaning water is injected in a fan shape in a substantially horizontal direction. In addition, each of the plurality of cleaning water injection ports 20b provided in the horizontal portion 5b does not necessarily inject the cleaning water upward. For example, the cleaning water outlet near the accommodation place such as chopsticks and a spoon is cleaned sideways. The cleaning water may be sprayed mainly on chopsticks or spoons that are difficult to remove by spraying water. Further, when the upper table basket 9 has no step, the horizontal portion 5b does not need to be formed in a shape with different height positions on the left and right.

  The upper surface of the third rotary washing nozzle 7 has a plurality of washing water injection ports for injecting washing water from below onto the object accommodated on the left side of the upper table basket 9 and is accommodated in the left side of the upper table basket 9. Washing water can be sprayed onto the object 10 to be cleaned from directly below, and even various tableware shapes and installation postures can be washed evenly.

  The vertical part 5a and the horizontal part 5b of the fixed cleaning nozzle 5 and the horizontal part 5b of the fixed cleaning nozzle 5 and the rotary cleaning nozzle water conduit 6 communicate with each other at the intersecting portion of the cylindrical part. The cleaning water supplied from below is supplied to the vertical portion 5a, the horizontal portion 5b, and the rotary cleaning nozzle water conduit 6, and is jetted from each cleaning water injection port. By forming the fixed nozzle 5 in a flat cylindrical shape, the fixed nozzle 5 does not protrude from the back surface of the cleaning tank 2 and does not reduce the storage space for the object to be cleaned.

  Moreover, since the washing water injection port 20a provided in the vertical part 5a injects the washing water in a substantially horizontal fan shape, the washing water can be applied from above the article to be washed contained in the washing tank 2. The upper surface portion of the object to be cleaned 10 that is difficult to be cleaned with the cleaning water sprayed from below, which is the main body of the cleaning water injection, can be cleaned. In particular, an object to be cleaned 10 having a thread bottom, for example, a tableware having a thread bottom such as a cup 10a shown in FIG. 1, is likely to leave fine leftovers in the thread bottom. Fine leftovers are washed out, and the effect of spreading wash water on all surfaces is obtained.

  Moreover, the rotary washing nozzle water guide path 6 is formed in a cylindrical shape, thereby eliminating the adhesion of water droplets to the upper surface and improving the drying performance.

  In the dishwasher according to the present embodiment, a plurality of injection units are provided as the first and second rotary cleaning nozzles 3 and 4, the fixed cleaning nozzle 5 and the third rotary cleaning nozzle 7 communicating with the fixed cleaning nozzle 5. In addition, the cleaning water supplied from the cleaning pump 11 is selectively supplied to each injection unit by the water dividing means 15. Here, as described above, the state in which cleaning water is supplied only to the first rotary cleaning nozzle 3, the state in which cleaning water is supplied to the first rotary cleaning nozzle 3 and the second rotary cleaning nozzle 4, There are four cleaning states: a state in which cleaning water is supplied only to the second rotary cleaning nozzle 4, and a state in which cleaning water is supplied only to the fixed cleaning nozzle 5 and the third rotary cleaning nozzle 7 communicating therewith. Water splitting is controlled.

  By supplying the cleaning water selectively to the plurality of jetting units in this way, the amount of water supplied in the cleaning tank 2 is increased when the cleaning water is supplied to all of the plurality of jetting units at the same time. Problems such as an increase in power consumption and an increase in size due to an increase in the amount of water used and an increase in temperature rise time can be solved.

The water distribution means 15 for selectively supplying the cleaning water to the plurality of injection units is 3 as in the configuration of the present embodiment.
In the case where the cleaning water is selectively fed to the injection portions at the locations, the water diversion means 15 can be configured in a simple structure as shown in FIG.

  FIG. 5 schematically shows an example of the configuration of the water distribution means 15, and is arranged in the direction of 90 degrees on the peripheral surface of the cylindrical water distribution valve 40 to which the cleaning water is supplied from the cleaning pump 11 at the center. The water supply openings 41a and 41b are opened, the water supply pipe 42 piped to the first rotary cleaning nozzle 3 in the clockwise 90 degree direction with the upper side of the paper as 0 degree, and the second rotary cleaning nozzle in the 180 degree direction. 4 is arranged in the direction of 315 degrees in the direction of the water supply pipe 43 and the water supply pipe 44 connected to the third rotary cleaning nozzle 7 communicated with the fixed cleaning nozzle 5 so as to face the peripheral surface of the water diversion valve 40, respectively. ing.

  When the diversion valve 40 is rotated every 45 degrees by a driving means (not shown) and rotated to the angular position shown in FIG. 5A, the water supply opening 41b opens in the direction of the water supply pipe 42. The cleaning water supplied from the cleaning pump 11 into the diversion valve 40 is supplied to the first rotary cleaning nozzle 3. 5B, the water supply opening 41b opens in the direction of the water supply pipe 43, and the water supply opening 41a opens in the direction of the water supply pipe 42. The cleaning water supplied into the diversion valve 40 is supplied to the first rotary nozzle 3 and the second rotary cleaning nozzle 4. 5C, the water supply opening 41a opens in the direction of the water supply pipe 43, so that the cleaning water is supplied to the second rotary cleaning nozzle 4. As shown in FIG. Further, when the water diversion valve 40 is rotated to the angular position shown in FIG. 5 (d), the water supply opening 41b opens in the direction of the water supply pipe 44. Therefore, the fixed cleaning nozzle 5 and the third rotary cleaning communicating therewith Washing water is fed to the nozzle 7.

  By configuring the water splitting means 15 as in the above configuration example, the cleaning water is supplied only to the first rotary cleaning nozzle 3 described above, the first rotary cleaning nozzle 3 and the second rotary cleaning nozzle. 4 is a state in which cleaning water is supplied, a state in which cleaning water is supplied only to the second rotary cleaning nozzle 4, and a cleaning water is supplied only to the fixed cleaning nozzle 5 and the third rotary cleaning nozzle 7 communicating therewith. It is possible to sequentially switch to the state of being supplied.

  As described above, the dishwasher according to the present invention can obtain high cleaning performance and washability by effectively combining the rotary cleaning nozzle and the fixed cleaning nozzle. Therefore, it is useful as a dishwasher for cleaning an object to be cleaned.

The front view which shows the structure of the dishwasher of Embodiment 1 of this invention. Side view showing the configuration of the dishwasher The front view which shows arrangement | positioning of the several injection part provided in the dishwasher The perspective view which shows the connection structure of a fixed washing nozzle and a rotation washing nozzle water conduit Schematic diagram showing an example of the configuration of water distribution means in the order of operation Front view showing the configuration of a dishwasher according to the prior art

DESCRIPTION OF SYMBOLS 1 Dishwasher main body 2 Washing tank 3 1st rotation washing nozzle (injection part)
4 Second rotary cleaning nozzle (jetting part)
5 Fixed cleaning nozzle (fixed nozzle)
5a Vertical part 5b Horizontal part 6 Rotating cleaning nozzle conduit 7 Third rotating cleaning nozzle (rotating nozzle)
8 Lower tableware basket (tableware basket)
9 Upper tableware basket (tableware basket)
10 Objects to be cleaned 11 Cleaning pump (pump device)
15 water diversion means

Claims (5)

A cleaning tank having an opening on the front surface, upper and lower tableware disposed in the cleaning tank, a plurality of injection units for injecting cleaning water to an object to be cleaned contained in the tableware basket, and the plurality of the plurality a pump device for supplying cleaning water to the injection unit, the upper dishes basket has a height different parts when disposed in said cleaning tank, said plurality of ejection portions, communicating with each other A rotating nozzle and a fixed nozzle , wherein the rotating nozzle performs injection toward a lower portion of the upper table basket, and the fixed nozzle is provided on a side wall of the cleaning tank, A dishwasher configured to perform spraying toward a higher portion of the upper table basket . The dishwasher according to claim 1 , wherein the fixed nozzle is provided on a rear surface opposite to the opening in the washing tank. The dishwasher according to claim 1 or 2 , wherein the rotary nozzle extends from the fixed nozzle toward the center of the washing tank. The dishwasher according to claim 3 , wherein the rotary nozzle extends from the rear to the front in the washing tank. The dishwasher according to any one of claims 1 to 4 , wherein the rotating nozzle is detachably connected to the fixed nozzle so that washing water can communicate with the rotating nozzle.

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