JP2005237405A

JP2005237405A - Dishwasher

Info

Publication number: JP2005237405A
Application number: JP2004047272A
Authority: JP
Inventors: Michio Watanabe; 通夫渡邊; Kazuhisa Enomoto; 和久榎本
Original assignee: Matsushita Electric Industrial Co Ltd
Current assignee: Panasonic Holdings Corp
Priority date: 2004-02-24
Filing date: 2004-02-24
Publication date: 2005-09-08

Abstract

<P>PROBLEM TO BE SOLVED: To provide a dishwasher that corrects irregularities in the quantity of water supplied due to a change in the hydraulic pressure of water supply and secures washing performance and running costs as intended. <P>SOLUTION: The dishwasher is equipped with a washing tub 1, a washing nozzle 4 arranged in the washing tub 1, a water level sensor 11 to sense a prescribed water level in the washing tub 1 and a feed valve 10 to feed water to the washing tub 1. With the prescribed water level set as a water level during a rinsing operation, the dishwasher performs water replenishment to replenish with water to increase the water level to the prescribed water level during a washing operation, temporarily stops the washing operation after an elapse of prescribed time from the start of the washing operation, senses the arrival of washing water to the prescribed water level by the water level sensor 11 and repeats water replenishment whether the prescribed water level has not be obtained or not, and corrects irregularities in the water quantity of replenishment due to a difference in the hydraulic pressure of water supply or irregularities in the water level due to the quantity or the shapes of dishes to be washed and secures washing performance and running costs as intended by the requisite minimum quantity of washing water. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は洗浄ノズルで洗浄水を噴射して食器類の洗浄を行う食器洗い機に関するものである。 The present invention relates to a dishwasher for cleaning dishes by jetting washing water with a washing nozzle.

従来、この種の食器洗い機は使用水量を減らしランニングコストを削減するために、すすぎ運転中は洗浄運転中よりも少ない水量で正常運転が可能であるということに着目し、すすぎ運転時の水位を基準水位とし、洗浄運転時はこの基準水位に水を補給する補給水行程を設けることにより、すすぎ運転時の水量を洗浄運転時の水量より少なくなるようにしていた。 Conventionally, this type of dishwasher reduces the amount of water used and reduces running costs, focusing on the fact that normal operation is possible with less water during the rinse operation than during the wash operation. By setting a reference water level and providing a replenishment water stroke for replenishing water at the reference water level during the cleaning operation, the amount of water during the rinsing operation was made smaller than the amount of water during the cleaning operation.

図２を用いて、上記従来の食器洗い機の一例について説明する。 An example of the conventional dishwasher will be described with reference to FIG.

洗浄槽１は前方に開口部２を有し、この開口部２を扉３により開閉するとともに、内部に洗浄水を噴射する回転自在のノズル４と、食器類５を収納する食器かご６が配置されている。また、洗浄槽１内の洗浄水はヒータ７によって温水化され、洗浄ポンプ８にてノズル４に圧送されて食器類５に向けて噴射し、それを循環させることにより食器類５が洗浄される。洗浄行程が終了すると、排水ポンプ９によって洗浄水は機外に排出される。１０は、給水手段である給水弁で、これを開閉することにより、洗浄槽１への洗浄水の供給を入り切りするものである。１１は、水位検知装置で、洗浄槽１内の水位が所定の水位に達しているかどうかを検知するものである。１２は制御装置で、ヒータ７、洗浄ポンプ８、排水ポンプ９、給水弁１０、水位検知装置１１等の制御等を行う。 The washing tub 1 has an opening 2 in the front, and the opening 2 is opened and closed by a door 3, and a rotatable nozzle 4 for injecting washing water therein and a table basket 6 for storing tableware 5 are arranged. Has been. The washing water in the washing tank 1 is warmed by the heater 7, pumped to the nozzle 4 by the washing pump 8, sprayed toward the dishes 5, and circulated to wash the dishes 5. . When the washing process is finished, the washing water is discharged out of the machine by the drain pump 9. A water supply valve 10 is a water supply means that opens and closes the supply of cleaning water to the cleaning tank 1 by opening and closing it. 11 is a water level detection device for detecting whether or not the water level in the cleaning tank 1 has reached a predetermined water level. A control device 12 controls the heater 7, the cleaning pump 8, the drainage pump 9, the water supply valve 10, the water level detection device 11, and the like.

以上のように構成された食器洗い機について、その動作を以下に説明する。 About the dishwasher comprised as mentioned above, the operation | movement is demonstrated below.

食器類５を食器かご６にセットし、洗剤を投入し運転を開始すると、水位検知装置１１が所定の水位に達したことを検知するまで給水弁１０から水が洗浄槽１内に給水される。所定水位に達すると一旦給水が停止し、その後所定の時間給水を行う補給水が実行され、この補給水が終了すると洗浄ポンプ８、ヒータ７に通電され、洗浄水はヒータ７で加熱されながらノズル４から食器類５に向け噴射され、食器類５の洗浄を行う。 When the tableware 5 is set in the tableware basket 6, the detergent is introduced, and the operation is started, water is supplied from the water supply valve 10 into the washing tank 1 until the water level detection device 11 detects that the water level has reached a predetermined level. . When the predetermined water level is reached, the water supply is temporarily stopped, and then the replenishment water for supplying water for a predetermined time is executed. When this replenishment water is finished, the cleaning pump 8 and the heater 7 are energized. 4 is sprayed toward the tableware 5 to clean the tableware 5.

洗浄行程が終了すると排水ポンプ９に通電され、洗浄水を機外に排出する。つぎに新たに水位検知装置１１が所定の水位に達したことを検知するまで給水弁１０から水が洗浄槽１内に給水され、この給水が終了すると洗浄ポンプ８が作動し、すすぎ行程が実行される。このように洗浄行程時の水位がすすぎ行程時の水位より高くなるように設定されている（例えば、特許文献１参照）。
特開２００１−５７９５７号公報 When the washing process is completed, the drainage pump 9 is energized and the washing water is discharged out of the machine. Next, water is supplied from the water supply valve 10 into the washing tank 1 until the water level detection device 11 newly detects that the water level has reached a predetermined water level. When this water supply is completed, the washing pump 8 is activated and the rinsing process is executed. Is done. As described above, the water level during the cleaning process is set to be higher than the water level during the rinsing process (see, for example, Patent Document 1).
JP 2001-57957 A

しかしながら、このような従来の食器洗い機では、洗浄運転のための補給水は、給水弁１０を所定時間開いて行っているため、給水水圧等の違いにより、給水流量が異なり、補給される水の量に多少が生じたり、洗浄運転が始まると洗浄槽１内の水は食器類５や洗浄槽１に付着するため、食器類５の量や形状によりこの付着量に多少が生じたりし、洗浄運転中の水位が低くなってしまった場合は、補給水の本来の効果が得られず、洗浄運転時にエアーがみが発生し、洗浄力が低下するという課題があった。またこのような洗浄力の低下を避けるために補給水の量を多めに設定すると、必要以上に使用水量が増え、ランニングコストの増加を招くという問題を有していた。 However, in such a conventional dishwasher, the replenishing water for the washing operation is performed by opening the water supply valve 10 for a predetermined time. If the amount of water is slightly increased or the cleaning operation is started, the water in the cleaning tank 1 adheres to the dishes 5 and the cleaning tank 1. When the water level during operation has become low, the original effect of makeup water cannot be obtained, and there has been a problem that air stains are generated during the cleaning operation and the cleaning power is reduced. Further, if the amount of makeup water is set to be large in order to avoid such a decrease in cleaning power, there is a problem that the amount of water used is increased more than necessary and the running cost is increased.

本発明は、上記従来の課題を解決するもので、給水水圧等の違いによる補給水の水量のばらつきや、洗浄する食器類の量や形状による洗浄運転時の水位のばらつきを補正し、目標通りの洗浄性能、ランニングコストを確保することができる食器洗い機を提供することを目的としている。 The present invention solves the above-described conventional problems, and corrects variations in the amount of makeup water due to differences in supply water pressure, etc., and variations in the water level during cleaning operations due to the amount and shape of dishes to be cleaned. The purpose is to provide a dishwasher that can ensure the washing performance and running cost.

上記従来の課題を解決するために、本発明の食器洗い機は、洗浄槽と、前記洗浄槽内に配された洗浄ノズルと、前記洗浄ノズルに洗浄水を圧送する洗浄ポンプと、前記洗浄槽内の所定の水位を検知する水位検知装置と、前記洗浄槽内へ給水する給水手段とを備え、前記所定の水位をすすぎ運転時の水位とし、洗浄運転時に前記所定の水位より高くなるように水の補給を行う補給水を実行し、洗浄運転開始から所定の時間経過後に洗浄運転を一時停止し、前記水位検知装置で洗浄水が前記所定の水位に達しているかいなかを検知し、達していない場合は再度補給水を実行するもので、給水水圧等の違いによる補給水の水量のばらつきや、洗浄する食器類の量や形状による洗浄運転時の水位のばらつきを補正することができるので、必要最小限の洗浄水で目標通りの洗浄性能、ランニングコストを確保することができる食器洗い機を提供することができる。 In order to solve the above-described conventional problems, the dishwasher of the present invention includes a washing tank, a washing nozzle disposed in the washing tank, a washing pump that pumps washing water to the washing nozzle, and the inside of the washing tank. A water level detecting device for detecting the predetermined water level and a water supply means for supplying water into the cleaning tank, wherein the predetermined water level is a water level during the rinsing operation, and water is set to be higher than the predetermined water level during the cleaning operation. The replenishing water is replenished, the cleaning operation is temporarily stopped after a predetermined time from the start of the cleaning operation, and the water level detection device detects whether or not the cleaning water has reached the predetermined water level. In this case, it is necessary to replenish the replenishment water, and it is possible to correct the variation in the amount of replenishment water due to differences in the feed water pressure, etc., and the variation in water level during the washing operation due to the amount and shape of the dishes to be washed. Minimal Cleaning performance of the target street water purification, it is possible to provide a dishwasher capable of securing the running cost.

本発明の食器洗い機は、給水水圧等の違いによる補給水の水量のばらつきや、洗浄する食器類の量や形状による洗浄運転時の水位のばらつきを補正し、目標どおりの性能やランニングコストを確保することができる食器洗い機を実現することができる。 The dishwasher of the present invention compensates for variations in the amount of makeup water due to differences in the supply water pressure, etc., and variations in the water level during washing operations due to the amount and shape of the dishes to be cleaned, ensuring performance and running costs as targeted. A dishwasher that can be realized.

第１の発明は、洗浄槽と、前記洗浄槽内に配された洗浄ノズルと、前記洗浄ノズルに洗浄水を圧送する洗浄ポンプと、前記洗浄槽内の所定の水位を検知する水位検知装置と、前記洗浄槽内へ給水する給水手段とを備え、前記所定の水位をすすぎ運転時の水位とし、洗浄運転時に前記所定の水位より高くなるように水の補給を行う補給水を実行し、洗浄運転開始から所定の時間経過後に洗浄運転を一時停止し、前記水位検知装置で洗浄水が前記所定の水位に達しているかいなかを検知し、達していない場合は再度補給水を実行するもので、給水水圧等の違いによる補給水の水量のばらつきや、洗浄する食器類の量や形状による洗浄運転時の水位のばらつきを補正することができるので、必要最小限の洗浄水で目標通りの洗浄性能、ランニングコストを確保する事ができる食器洗い機を提供することができる。 The first invention includes a cleaning tank, a cleaning nozzle disposed in the cleaning tank, a cleaning pump that pumps cleaning water to the cleaning nozzle, and a water level detection device that detects a predetermined water level in the cleaning tank, And a water supply means for supplying water into the cleaning tank, wherein the predetermined water level is set to a water level at the time of the rinsing operation, and replenishing water for supplying water so as to be higher than the predetermined water level at the time of the cleaning operation is executed, After a predetermined time has elapsed from the start of operation, the cleaning operation is temporarily stopped, and the water level detection device detects whether or not the cleaning water has reached the predetermined water level.If not, the replenishing water is executed again. It is possible to compensate for variations in the amount of makeup water due to differences in supply water pressure, etc., and variations in the water level during washing operations due to the amount and shape of dishes to be washed. , Running It is possible to provide a dishwasher that can secure the door.

第２の発明は、特に、上記第１の発明の洗浄運転開始から所定の時間経過後に行う水位検知装置による水位検知およびその結果に基づく補給水の実行を複数回行うようにしたもので、補給される水の量を精度良く確保でき、信頼性の向上が図れる。 In the second invention, in particular, the water level detection by the water level detection device performed after a predetermined time has elapsed from the start of the cleaning operation of the first invention and the execution of makeup water based on the result are performed a plurality of times. The amount of water used can be ensured with high accuracy, and reliability can be improved.

以下、本発明の実施の形態について、図面を参照しながら説明する。また、この実施の形態によって本発明が限定されるものではない。 Hereinafter, embodiments of the present invention will be described with reference to the drawings. Further, the present invention is not limited by this embodiment.

（実施の形態１）
本発明の第１の実施の形態における食器洗い機の構成は、従来例と同一で運転方法のみ異なるので、図１に示す食器洗い機の運転動作を示すフローチャートを用いて、本実施の形態を説明する。従って、従来例と同一部分について同一符号を付してその説明を省略する。 (Embodiment 1)
The configuration of the dishwasher in the first embodiment of the present invention is the same as that of the conventional example, and only the operation method is different. Therefore, the present embodiment will be described with reference to the flowchart showing the operation of the dishwasher shown in FIG. . Therefore, the same parts as those in the conventional example are denoted by the same reference numerals and the description thereof is omitted.

図１において、食器類５を食器かご６にセットし、洗剤を投入し運転を開始すると、制御装置１２により、水位検知装置１１が所定の水位に達したことを検知するまで給水手段である給水弁１０から水が洗浄槽１内に給水される。所定水位に達すると一旦給水が停止し、その後所定の時間給水を行う補給水が実行される。この補給水が終了すると洗浄ポンプ８の運転と供に洗浄運転が開始する。その洗浄運転が所定の時間行なわれた後一時停止し、再度水位検知装置１１で水が所定の水位に達しているかを検知し、達している場合は、ひき続き洗浄運転を行い、達していない場合は、再度所定の時間給水を行う補給水が実行され、その後洗浄運転を行うようにしたものである。 In FIG. 1, when the tableware 5 is set in the tableware basket 6, the detergent is introduced, and the operation is started, the water supply is water supply means until the control device 12 detects that the water level detection device 11 has reached a predetermined water level. Water is supplied from the valve 10 into the washing tank 1. When the predetermined water level is reached, the water supply is stopped once, and then the makeup water for supplying water for a predetermined time is executed. When this makeup water is finished, the cleaning operation starts together with the operation of the cleaning pump 8. After the cleaning operation is performed for a predetermined time, the operation is temporarily stopped, and the water level detection device 11 detects again whether the water has reached the predetermined water level. In this case, the replenishing water that supplies water for a predetermined time is executed again, and then the cleaning operation is performed.

そして、洗浄行程が終了すると、排水ポンプ９に通電され、洗浄水を機外に排出する。つぎに新たに水位検知装置１１が所定の水位を検知するまで給水弁１０から水が洗浄槽１内に給水され、この給水が終了すると洗浄ポンプ８が作動し、すすぎ行程が実行される。 When the cleaning process is completed, the drainage pump 9 is energized and the cleaning water is discharged outside the apparatus. Next, water is supplied from the water supply valve 10 into the cleaning tank 1 until the water level detection device 11 newly detects a predetermined water level. When this water supply is completed, the cleaning pump 8 is activated and the rinsing process is executed.

以上のように、本実施の形態によれば、給水水圧等の違いによる補給水の水量のばらつきや、洗浄する食器類５の量や形状による洗浄運転時の水位のばらつきを補正することができるので、必要最小限の洗浄水で目標通りの洗浄性能が得られ、ランニングコストが増加することが無い食器洗い機を提供することができる。 As described above, according to the present embodiment, it is possible to correct variations in the amount of makeup water due to differences in the supply water pressure and the like, and variations in the water level during the cleaning operation due to the amount and shape of the dishes 5 to be cleaned. Therefore, it is possible to provide a dishwasher that achieves the desired cleaning performance with the minimum required amount of washing water and does not increase the running cost.

また、上記実施の形態では、所定時間洗浄運転を行った後の水位の検知を１回のみ行ったが、所定時間の洗浄運転と水位検知を繰りかえし複数回行うようにすれば、補給水の量を精度良く確保でき、信頼性の向上が図れるのはいうまでもない。 In the above embodiment, the water level is detected only once after performing the cleaning operation for a predetermined time. However, if the cleaning operation and the water level detection for a predetermined time are repeated a plurality of times, the amount of makeup water is supplied. Needless to say, the accuracy can be ensured and the reliability can be improved.

以上のように、本発明にかかる食器洗い機は、給水水圧等の違いによる補給水の水量のばらつきや、洗浄する食器類の量や形状による洗浄運転時の水位のばらつきに対応することができるので、安定したしかも目標通りの洗浄性能や適正なランニングコストを確保することができるもので、家庭用、業務用食器洗い機や、洗浄機器に適用できる。 As described above, the dishwasher according to the present invention can cope with variations in the amount of makeup water due to differences in supply water pressure, etc., and variations in the water level during washing operations due to the amount and shape of dishes to be washed. In addition, it can ensure stable washing performance and proper running cost, and can be applied to household and commercial dishwashers and washing equipment.

本発明の実施の形態１における食器洗い機の運転動作を示すフローチャートThe flowchart which shows the driving | operation operation | movement of the dishwasher in Embodiment 1 of this invention. 従来の食器洗い機の側断面図Side view of a conventional dishwasher

符号の説明Explanation of symbols

１洗浄槽
４ノズル
８洗浄ポンプ
９排水ポンプ
１０給水弁（給水手段）
１１水位検知装置
１３制御装置 1 Washing tank 4 Nozzle 8 Washing pump 9 Drainage pump 10 Water supply valve (water supply means)
11 Water level detection device 13 Control device

Claims

洗浄槽と、前記洗浄槽内に配された洗浄ノズルと、前記洗浄ノズルに洗浄水を圧送する洗浄ポンプと、前記洗浄槽内の所定の水位を検知する水位検知装置と、前記洗浄槽内へ給水する給水手段とを備え、前記所定の水位をすすぎ運転時の水位とし、洗浄運転時に前記所定の水位より高くなるように水の補給を行う補給水を実行し、洗浄運転開始から所定の時間経過後に洗浄運転を一時停止し、前記水位検知装置で洗浄水が前記所定の水位に達しているかいなかを検知し、達していない場合は再度補給水を実行する食器洗い機。 To the cleaning tank, a cleaning nozzle arranged in the cleaning tank, a cleaning pump for pumping cleaning water to the cleaning nozzle, a water level detection device for detecting a predetermined water level in the cleaning tank, and the cleaning tank Water supply means for supplying water, wherein the predetermined water level is set to the water level during the rinsing operation, and replenishing water is supplied to replenish water so as to be higher than the predetermined water level during the cleaning operation, and a predetermined time from the start of the cleaning operation. A dishwasher that temporarily stops the washing operation after the lapse of time and detects whether or not the washing water has reached the predetermined water level by the water level detection device.

洗浄運転開始から所定の時間経過後に行う水位検知装置による水位検知およびその結果に基づく補給水の実行を複数回行うようにした請求項１記載の食器洗い機。 The dishwasher according to claim 1, wherein water level detection by a water level detection device performed after a lapse of a predetermined time from the start of the washing operation and execution of makeup water based on the result are performed a plurality of times.