JPH0767435B2 - Dishwasher - Google Patents
DishwasherInfo
- Publication number
- JPH0767435B2 JPH0767435B2 JP19466687A JP19466687A JPH0767435B2 JP H0767435 B2 JPH0767435 B2 JP H0767435B2 JP 19466687 A JP19466687 A JP 19466687A JP 19466687 A JP19466687 A JP 19466687A JP H0767435 B2 JPH0767435 B2 JP H0767435B2
- Authority
- JP
- Japan
- Prior art keywords
- cleaning
- pump
- water
- control device
- water supply
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 67
- 238000004140 cleaning Methods 0.000 claims description 64
- 238000000034 method Methods 0.000 claims description 24
- 238000001514 detection method Methods 0.000 claims description 19
- 230000005856 abnormality Effects 0.000 claims description 10
- 238000005406 washing Methods 0.000 claims description 10
- 238000004886 process control Methods 0.000 claims description 2
- 230000002159 abnormal effect Effects 0.000 claims 1
- 238000007599 discharging Methods 0.000 claims 1
- 230000001052 transient effect Effects 0.000 description 3
- 239000000356 contaminant Substances 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- 238000004851 dishwashing Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
Landscapes
- Washing And Drying Of Tableware (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 本発明は洗浄水の噴射により食器等の洗浄を行なう食器
洗浄機に関し、特に洗浄ポンプによる給水完了検知に関
するものである。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dishwasher for washing dishes and the like by jetting washing water, and more particularly to detection of water supply completion by a washing pump.
従来の技術 従来、この種の食器洗浄機として一般的なものは、第４
図に示すように、水位検知装置１にて洗浄水の給水量を
制御していた。洗浄槽２に洗浄水を給水する給水工程で
は給水弁３を作動させ、洗浄水の水位が所定の高さ（以
後、洗浄水位と呼ぶ）に達すると水位検知装置１が動作
し、この出力信号に応じて給水弁３を停止することで所
要の給水量を得ていた。2. Description of the Related Art Conventionally, a general dishwasher of this type is
As shown in the figure, the water level detection device 1 controls the amount of wash water supplied. In the water supply process of supplying the cleaning water to the cleaning tank 2, the water supply valve 3 is operated, and when the water level of the cleaning water reaches a predetermined height (hereinafter referred to as the cleaning water level), the water level detection device 1 operates to output this output signal. The required amount of water supply was obtained by stopping the water supply valve 3 according to.
発明が解決しようとする問題点 しかしながら、上記構成では、水位検知装置１に洗浄水
に含まれた汚染物の堆積が進行し、動作する水位（以後
検知水位と呼ぶ）が洗浄水位と差異を生じ極端な場合に
は洗浄槽２から溢水するという問題があった。また、製
品が傾斜して設置された場合には、水位検知装置１の動
作が正常であっても、給水量が所要の水量より過剰であ
るかまたは不足するため、前者では洗浄水を加熱するた
めに長時間を要し、後者では洗浄ポンプに洗浄水が十分
供給されないためにポンプ性能が低下し洗浄性能が悪い
という問題もあった。DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention However, in the above-described configuration, the accumulation of contaminants contained in the wash water in the water level detection device 1 progresses, and the operating water level (hereinafter referred to as the detected water level) differs from the wash water level. In an extreme case, there is a problem that water overflows from the cleaning tank 2. Further, when the product is installed at an inclination, even if the operation of the water level detection device 1 is normal, the amount of water supplied is excessive or insufficient than the required amount of water, so the former heats the wash water. Therefore, it takes a long time. In the latter case, the cleaning water is not sufficiently supplied to the cleaning pump, so that the pump performance is deteriorated and the cleaning performance is poor.
本発明はこのような問題点を解決するもので、水位検知
の動作が確実で、かつ、十分なポンプ性能が得られる適
正な給水量を得る食器洗浄機を提供することを目的とす
る。The present invention solves such a problem, and an object of the present invention is to provide a dishwasher with which the operation of water level detection is reliable and a proper amount of water can be obtained with sufficient pump performance.
問題点を解決するための手段 上記問題点を解決するために本発明の食器洗浄機は、洗
浄水を貯溜する洗浄槽と、洗浄ポンプにより加圧された
洗浄水を噴射する洗浄ノズルと、前記洗浄ポンプの負荷
変動を検知するポンプ負荷変動検知装置と、所定工程で
洗浄ポンプを動作させ、ポンプ負荷変動検知装置からの
出力信号に応じて工程制御を行う制御装置を備えた構成
である。Means for Solving the Problems In order to solve the above problems, the dishwasher of the present invention includes a cleaning tank for storing cleaning water, a cleaning nozzle for injecting cleaning water pressurized by a cleaning pump, and This is a configuration including a pump load fluctuation detection device that detects load fluctuations of the cleaning pump, and a control device that operates the cleaning pump in a predetermined process and performs process control according to an output signal from the pump load fluctuation detection device.
作用 前記構成により、給水工程で洗浄ポンプが作動し、洗浄
ポンプの負荷は洗浄水の殆んど無い状態での無負荷状態
から洗浄水が給水されて増加する時の過渡状態を経て、
所要の給水量を得た状態での定常状態へと変動するが、
ポンプ負荷変動検知装置からの出力信号によりこの変動
を検知すれば給水制御が行え、また、洗浄工程，排水工
程においても洗浄ポンプを動作させて洗浄水の有無等を
検知し、異常検知を行うものである。With the above-mentioned configuration, the cleaning pump operates in the water supply process, and the load of the cleaning pump changes from an unloaded state in which there is almost no cleaning water to a transient state when the cleaning water is supplied and increases,
It changes to a steady state with the required amount of water supply,
Water supply control can be performed by detecting this fluctuation from the output signal from the pump load fluctuation detection device, and also in the cleaning process and drainage process, the cleaning pump is operated to detect the presence or absence of cleaning water and to detect abnormalities. Is.
実施例 第１図は本発明の一実施例における食器洗浄機の縦断面
図を示すものである。第１図において、４は洗浄槽、５
は洗浄ノズル、６は洗浄水を洗浄ノズルに給送する洗浄
ポンプ、７は洗浄水を供給するための給水弁、８は洗浄
ポンプの負荷変動を検知するポンプ負荷変動検知装置で
あり、本実施例では洗浄ポンプ６の駆動用モータ９の回
転数を検知している。ポンプ負荷変動検知装置８の出力
信号を入力する制御装置10は第２図に示すように、洗浄
ポンプ６、給水弁７、排水ポンプ等を制御する。Embodiment FIG. 1 is a vertical sectional view of a dishwasher according to an embodiment of the present invention. In FIG. 1, 4 is a cleaning tank, 5
Is a cleaning nozzle, 6 is a cleaning pump for supplying cleaning water to the cleaning nozzle, 7 is a water supply valve for supplying cleaning water, and 8 is a pump load fluctuation detecting device for detecting load fluctuation of the cleaning pump. In the example, the rotation speed of the drive motor 9 of the cleaning pump 6 is detected. As shown in FIG. 2, the control device 10 which inputs the output signal of the pump load variation detection device 8 controls the washing pump 6, the water supply valve 7, the drainage pump and the like.
上記構成において、以下その動作を給水工程における給
水完了検知について説明する。制御装置10は給水工程で
給水弁７が動作させ、洗浄槽４に洗浄水を供給させる。
一方洗浄ポンプ６を動作させ、洗浄ポンプ６の負荷をポ
ンプ負荷変動装置８により検知する。この負荷変動は第
３図に示すように、給水量に応じて変動する。すなわ
ち、所要の給水量が得られると、ポンプ回転数が過渡状
態から安定状態へ移行するので、制御装置10は給水弁７
を停止し、給水工程を完了し、洗浄ノズル５からの洗浄
水の噴射により食器等を洗浄する洗浄工程へと進行させ
る。In the above-mentioned configuration, the operation will be described below for detecting completion of water supply in the water supply process. The control device 10 operates the water supply valve 7 in the water supply process to supply the cleaning water to the cleaning tank 4.
On the other hand, the washing pump 6 is operated, and the load of the washing pump 6 is detected by the pump load changing device 8. This load fluctuation fluctuates according to the amount of water supply, as shown in FIG. That is, when the required amount of water supply is obtained, the pump rotation speed shifts from the transient state to the stable state.
Is stopped, the water supply process is completed, and the process proceeds to a cleaning process for cleaning dishes and the like by spraying cleaning water from the cleaning nozzle 5.
以上の様に本実施例によれば、洗浄ポンプ６の負荷変動
で給水量を制御するので、以下のような長所がある。As described above, according to the present embodiment, since the water supply amount is controlled by the load fluctuation of the cleaning pump 6, it has the following advantages.
（１）製品が傾斜して設置されても、洗浄ポンプ６のポ
ンプ性能に支障のない適正な給水量を検知することがで
きる。(1) Even if the product is installed at an inclination, it is possible to detect an appropriate water supply amount that does not hinder the pump performance of the cleaning pump 6.
（２）洗浄ポンプ６の負荷は洗浄水に含まれる汚染物に
影響されず、常に一定の洗浄水位で検知することができ
るので水位検知の信頼性が非常に高い。(2) The load on the cleaning pump 6 is not affected by contaminants contained in the cleaning water and can always be detected at a constant cleaning water level, so the water level detection is highly reliable.
また、給水工程でポンプ負荷変動が所定時間内に過渡状
態を継続し定常状態に移行しない場合にはフィルターが
完全に目詰りしているか、中性洗剤等の誤使用による泡
立ち等の状態が想定され、給水工程を停止するとともに
異常報知を行い、洗浄不良を防止する。Also, in the water supply process, if the pump load fluctuation continues in a transient state within a predetermined time and does not shift to a steady state, the filter is completely clogged, or a condition such as foaming due to misuse of neutral detergent is assumed. Then, the water supply process is stopped and an abnormality is notified to prevent defective cleaning.
洗浄工程では、ポンプ負荷が無負荷状態を示した場合、
洗浄槽内の洗浄水が減水と制御装置10が判定し洗浄工程
を停止するとともに異常報知を行い洗浄不良を防止す
る。In the washing process, if the pump load shows no load,
The control device 10 determines that the amount of cleaning water in the cleaning tank is low, stops the cleaning process, and notifies the abnormality to prevent cleaning failure.
排水工程では、ポンプ負荷が無負荷状態でない場合、排
水不良と制御装置10が判定し、排水検知専用の水位検知
装置が無くとも排水不良検知ができる。In the drainage process, when the pump load is not in the no-load state, the control device 10 determines that the drainage is defective and the drainage defect can be detected without the water level detection device dedicated to the drainage detection.
なお、本実施例ではモータ９の回転数から洗浄ポンプ６
の負荷の変動を検知しているが、洗浄ポンプ６の吐出
圧、モータ９の電流、あるいはモータ９のコンデンサ端
子の電圧等から検知することができることは言うまでも
ない。In the present embodiment, the cleaning pump 6 is calculated based on the rotation speed of the motor 9.
However, it goes without saying that it can be detected from the discharge pressure of the cleaning pump 6, the current of the motor 9, the voltage of the capacitor terminal of the motor 9, or the like.
発明の効果 以上説明したように、本発明によれば洗浄ポンプの負荷
変動を検知することで、給水工程における給水制御を精
度高く検知でき、また洗浄工程，排水工程時の異常判定
もでき、簡単な構成にて各種制御を行うことができる。EFFECTS OF THE INVENTION As described above, according to the present invention, it is possible to detect the water supply control in the water supply process with high accuracy by detecting the load fluctuation of the cleaning pump, and it is also possible to determine the abnormality in the cleaning process and the drainage process, which is simple. Various controls can be performed with various configurations.
第１図は本発明における一実施例の食器洗浄機の縦断面
図、第２図は同回路ブロック図、第３図は洗浄ポンプの
負荷変動と給水量の関係図、第４図は従来の食器洗い機
の縦断面図である。 ４……洗浄槽、６……洗浄ポンプ、７……給水弁、８…
…ポンプ負荷変動検知装置、10……制御装置。FIG. 1 is a vertical cross-sectional view of a dishwasher according to an embodiment of the present invention, FIG. 2 is a circuit block diagram of the same, FIG. 3 is a relational diagram of load fluctuation of a washing pump and water supply amount, and FIG. It is a longitudinal cross-sectional view of a dishwasher. 4 ... Washing tank, 6 ... Washing pump, 7 ... Water supply valve, 8 ...
… Pump load fluctuation detection device, 10 …… Control device.
Claims (5)
より加圧された洗浄水を噴射する洗浄ノズルと、前記洗
浄ポンプの負荷変動を検知するポンプ負荷変動検知装置
と、所定工程で洗浄ポンプを動作させ、ポンプ負荷変動
検知装置からの出力信号に応じて工程制御を行う制御装
置を備えた食器洗浄機。1. A cleaning tank for storing cleaning water, a cleaning nozzle for injecting cleaning water pressurized by a cleaning pump, a pump load fluctuation detecting device for detecting load fluctuation of the cleaning pump, and cleaning in a predetermined process. A dishwasher equipped with a control device that operates a pump and performs process control according to an output signal from a pump load change detection device.
させ、ポンプ負荷変動検知装置の出力信号に応じて給水
量を制御する特許請求の範囲第１項記載の食器洗浄機。2. The dishwasher according to claim 1, wherein the control device operates the washing pump during the water supply process, and controls the water supply amount according to the output signal of the pump load variation detection device.
停止するとともに異常報知を実行する特許請求の範囲第
２項記載の食器洗浄機。3. The dishwasher according to claim 2, wherein the control device stops the water supply process and issues an abnormality notification after a predetermined time has elapsed.
る洗浄工程で、ポンプ負荷変動検知装置からの出力信号
により異常検知を行い、異常時には洗浄工程を停止する
とともに異常報知を実行する特許請求の範囲第１項記載
の食器洗浄機。4. A control device performs abnormality detection by an output signal from a pump load variation detection device in a cleaning process of injecting cleaning water from a cleaning nozzle, and when abnormal, stops the cleaning process and issues an abnormality notification. The dishwasher according to claim 1.
水工程の終了時点で洗浄ポンプを作動させ、ポンプ負荷
変動検知装置からの出力信号により異常検知を行い、異
常時には次工程への進行を停止するとともに異常報知を
実行する制御装置を備えた特許請求の範囲第１項，第２
項，第３項または第４項記載の食器洗浄機。5. The control device operates the cleaning pump at the end of the drainage process for discharging the cleaning water to the outside of the cleaning tank, detects an abnormality by the output signal from the pump load change detection device, and when there is an abnormality, the control unit proceeds to the next process. Claims 1 and 2 provided with a control device for stopping the progress and executing an abnormality notification
The dishwasher according to item 3, item 3 or item 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19466687A JPH0767435B2 (en) | 1987-08-04 | 1987-08-04 | Dishwasher |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19466687A JPH0767435B2 (en) | 1987-08-04 | 1987-08-04 | Dishwasher |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6437922A JPS6437922A (en) | 1989-02-08 |
| JPH0767435B2 true JPH0767435B2 (en) | 1995-07-26 |
Family
ID=16328289
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19466687A Expired - Lifetime JPH0767435B2 (en) | 1987-08-04 | 1987-08-04 | Dishwasher |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0767435B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4759583B2 (en) * | 2007-11-15 | 2011-08-31 | リンナイ株式会社 | Dishwasher |
| JP5146331B2 (en) * | 2009-01-19 | 2013-02-20 | パナソニック株式会社 | dishwasher |
-
1987
- 1987-08-04 JP JP19466687A patent/JPH0767435B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6437922A (en) | 1989-02-08 |
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