JPH069678B2 - Spray cleaning device - Google Patents
Spray cleaning deviceInfo
- Publication number
- JPH069678B2 JPH069678B2 JP24856986A JP24856986A JPH069678B2 JP H069678 B2 JPH069678 B2 JP H069678B2 JP 24856986 A JP24856986 A JP 24856986A JP 24856986 A JP24856986 A JP 24856986A JP H069678 B2 JPH069678 B2 JP H069678B2
- Authority
- JP
- Japan
- Prior art keywords
- water
- pump
- valve
- pressure
- cleaning
- 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
Landscapes
- Cleaning By Liquid Or Steam (AREA)
Description
【発明の詳細な説明】 ［産業上の利用分野］ この発明は、冷水・温水・洗浄水等のそれぞれ異なる２
種類以上の洗浄水をポンプで圧送し手元弁付きのスプレ
ーガンにより噴射させる方式のスプレー洗浄装置に関
し、特に手元弁の開閉操作により装置の遠隔制御を行な
うようにした装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to cold water, hot water, washing water, etc.
The present invention relates to a spray cleaning device of a type in which more than one type of cleaning water is pressure-fed by a pump and is sprayed by a spray gun with a hand valve, and more particularly, to a device for remotely controlling the device by opening and closing a hand valve.
［従来技術およびその問題点］ 従来、この種の装置として例えば特公昭５８−１０１５
４号公報に示されるように、スプレーガンに具備される
手元弁の開閉により洗浄水を圧送するポンプの駆動を制
御する装置が知られている。[Prior Art and Problems Thereof] As a device of this type, for example, Japanese Patent Publication No. 58-1015.
As shown in Japanese Patent Publication No. 4, a device for controlling the drive of a pump for pumping cleaning water by opening and closing a hand valve provided in a spray gun is known.
ところで、一般に使用されているスプレー洗浄装置は、
ただ単に水をスプレーするばかりでなく、温水器を備え
て温水と冷水を切り換えてスプレーしたり、また必要に
応じて洗浄水をスプレーしたりする機能を持たせたもの
が大半であり、泥汚れは冷水で落とし落ちにくい油汚れ
等は温水や洗剤水で落とすと云ったように、洗浄作業中
に切り換えて使用することが多い。ところが上述したよ
うな従来装置では、ポンプの駆動を遠隔制御するだけで
あり、こうした洗浄水の切り換えは本体装置まで行って
切り換え操作しなければならず、不便なものであった。By the way, the commonly used spray cleaning device is
In addition to simply spraying water, most of them are equipped with a water heater to switch between hot water and cold water for spraying, and also to have washing water sprayed as needed. As is said to remove oil stains that are difficult to remove with cold water with warm water or detergent water, they are often used by switching during cleaning work. However, in the conventional device as described above, the drive of the pump is only remotely controlled, and such switching of the wash water has to be performed by switching to the main body device, which is inconvenient.
［問題点を解決するための手段］ この発明は、冷水・温水・洗浄水等のそれぞれ異なる２
種類以上の洗浄水を切り換えてポンプで圧送し、手元弁
付きのスプレーガンより噴射させる方式のスプレー洗浄
装置において、前記ポンプの吐出側管路の水圧に応じて
開弁され洗浄水を前記ポンプの吸込側へ帰還させるアン
ローダバルブと、前記ポンプ駆動時におけるアンローダ
バルブの開閉状態に応じ前記手元弁の開閉を検出する手
段と、前記ポンプの吐出側管路にあって前記アンローダ
バルブの下流側に位置する逆止弁と、該逆止弁と前記ス
プレーガンとの間に位置し前記吐出側管路内の水圧が通
常の洗浄作業時より低い設定圧以下となったことを検出
する圧力スイッチと、前記検出手段および圧力スイッチ
からの信号に応じて下記ａ〜ｃの制御を与える制御手段
とを備えて、上記問題点の解決をはかったものである。[Means for Solving Problems] This invention is different from cold water, hot water, wash water, etc. 2
In a spray cleaning device of a type in which more than one type of cleaning water is switched and pressure-fed by a pump and sprayed from a spray gun equipped with a hand valve, the cleaning water is opened according to the water pressure of the discharge side pipe line of the pump. An unloader valve for returning to the suction side, a means for detecting the opening / closing of the hand valve according to the open / closed state of the unloader valve when the pump is driven, and a position in the discharge side pipeline of the pump downstream of the unloader valve A check valve, and a pressure switch that is located between the check valve and the spray gun and detects that the water pressure in the discharge side pipe line has become lower than or equal to a preset pressure lower than during normal cleaning work, The above-mentioned problems are solved by providing a control means for providing the following controls a to c according to the signals from the detection means and the pressure switch.
ａ．前記ポンプが駆動した洗浄作業中に前記手元弁が閉
じられたのを前記検出手段で検出し、この状態が所定時
間以上継続すると、ポンプの駆動を停止する。a. The detection means detects that the hand valve is closed during the cleaning operation driven by the pump, and when this state continues for a predetermined time or longer, the drive of the pump is stopped.
ｂ．前記ポンプが駆動した洗浄作業中に前記手元弁が閉
じられたのを前記検出手段で検出し、この状態が所定時
間以内に手元弁が再び開かれて解除されると、前記洗浄
水を異なるものに切り換える。b. When the detection means detects that the hand valve is closed during the cleaning operation driven by the pump, and this state is opened and released again within a predetermined time, the wash water is changed. Switch to.
ｃ．前記ａに伴う前記ポンプの停止中に、前記手元弁が
開かれて前記圧力スイッチが前記設定圧以下の水圧を検
出すると、ポンプを再駆動させる。c. When the hand valve is opened and the pressure switch detects a water pressure equal to or lower than the set pressure while the pump is stopped due to the a, the pump is re-driven.
［作 用］ 洗浄作業中にスプレーガンにおいて手元弁が閉じられる
と、遮断された洗浄水はアンローダバルブを押し開いて
ポンプ吸込側へ帰還されるので、これを検出手段で検出
する。このときポンプの吐出側管路における帰還管路の
分岐点より下流側は逆止弁により逆流が止められるの
で、手元弁が閉じられたときの水圧が維持され、圧力ス
イッチが設定圧以下の水圧を検出することはない。そし
て、この状態が所定時間以上継続するとポンプが自動停
止され、一方この状態が所定時間内に手元弁が開かれて
解除されれば、洗浄水を例えば「水→洗剤」といったよ
うに切り換える。また、ポンプが前記のように自動停止
された状態で手元弁が開かれると、逆止弁において蓄積
されていた水圧が開放されて前記吐出側管路の水圧が低
下し、これを圧力スイッチで検出してポンプを再駆動さ
せる。[Operation] When the hand valve is closed in the spray gun during cleaning work, the interrupted cleaning water pushes the unloader valve open and returns to the pump suction side, which is detected by the detection means. At this time, the check valve stops the reverse flow downstream of the branch point of the return line in the discharge side line of the pump, so the water pressure when the hand valve is closed is maintained, and the pressure switch keeps the water pressure below the set pressure. Will never be detected. Then, if this state continues for a predetermined time or more, the pump is automatically stopped, and if this state is opened and released within the predetermined time, the wash water is switched, for example, "water → detergent". When the hand valve is opened while the pump is automatically stopped as described above, the water pressure accumulated in the check valve is released, and the water pressure in the discharge side pipeline is reduced. Detect and restart pump.
［実施例］ 以下その具体例について図面を基に説明する。EXAMPLES Specific examples will be described below with reference to the drawings.
第１図は本発明一実施例の構成説明図で、１はスプレー
洗浄装置本体で、ホース２を延出させその先端にスプレ
ーガン３を備えている。このスプレーガン３には手元弁
４が備えられ、レバー５により任意に開閉操作が可能で
ある。６は前記本体内に備えられる温水装置で、その内
部にはボールタップ７により常に一定水位の水が貯えら
れ、バーナ８を運転することによりこの水を加熱する。
９はモータ10により駆動されるポンプで、吸込側は管路
11を介して前記温水装置６と、吐出側は管路12を介して
前記ホース２とそれぞれ連通し、温水装置６内の水もし
くは温水を圧送し、前記スプレーガン３より噴射させ
る。FIG. 1 is a structural explanatory view of one embodiment of the present invention, in which a spray cleaning apparatus main body 1 extends a hose 2 having a spray gun 3 at its tip. The spray gun 3 is provided with a hand valve 4 and can be opened / closed arbitrarily by a lever 5. Reference numeral 6 denotes a hot water device provided in the main body, in which water having a constant water level is always stored by a ball tap 7, and the burner 8 is operated to heat the water.
Reference numeral 9 is a pump driven by a motor 10, and the suction side is a pipeline.
The hot water device 6 is connected via 11 and the hose 2 is connected on the discharge side to the hose 2 via a conduit 12, and the water in the hot water device 6 or hot water is pressure-fed and sprayed from the spray gun 3.
13は洗剤液を貯える洗剤タンクで、管路14を介して前記
管路11に備えられる混合器15と連通しており、この混合
器15では管路11を流れる水に管路14より送られて来る洗
剤液を混合させる。16は管路14に設けられる電磁弁、17
は同じく管路14に設けられる流量調節弁で、電磁弁16を
開くことによりスプレーガン３より噴射する洗浄水を洗
剤混合水とし、閉じることにより洗浄水をただの水もし
くは温水としており、また調節弁17により前記洗剤混合
水の洗剤濃度を調節する。Denoted at 13 is a detergent tank for storing the detergent liquid, which communicates with a mixer 15 provided in the pipeline 11 via a pipeline 14. In the mixer 15, the water flowing through the pipeline 11 is sent from the pipeline 14. Mix the detergent solution that comes in. 16 is a solenoid valve provided in the pipeline 14, 17
Is also a flow rate control valve provided in the pipe line 14. When the solenoid valve 16 is opened, the cleaning water sprayed from the spray gun 3 is made into detergent mixed water, and when it is closed, the cleaning water is just water or hot water. The valve 17 controls the detergent concentration of the detergent mixed water.
18は前記ポンプ吐出側管路12に備えられるアンローダバ
ルブで、ポンプ９の駆動中に手元弁４が閉じられる等し
てポンプ９の吐出側の水圧が通常の洗浄で使用される吐
出圧（本例では約70kg/cm2）を上回る高圧（本例では80
〜90kg/cm2）に達すると開弁され、水圧が所定の低圧
（本例では10〜20kg/cm2）以下に降下するまで開弁を保
持するよう動作するもので、開弁により洗浄水は帰還管
路19を介して前記温水装置６へ帰還される。Reference numeral 18 denotes an unloader valve provided in the pump discharge side pipe line 12. The discharge side water pressure of the pump 9 is used for normal cleaning (such as when the pump 4 is closed while the pump 9 is being driven). High pressure (80 kg in this example) exceeding about 70 kg / cm 2 in the example.
When ~90kg / cm 2) is reached is opened, the water pressure is at a predetermined low pressure (this example is intended to operate so as to hold the valve open until drops to 10-20 kg / cm 2) or less, the washing water by opening Is returned to the hot water device 6 via a return line 19.
20は帰還管路19より分岐し前記本体１外へ開口する排出
管路、21・22は管路19及び管路20に設けられる電磁弁
で、常時は21が開弁、２２が閉弁された状態にあり、洗
浄水を温水装置６へ帰還させるよう管路19を形成してい
る。ここで、アンローダバルブ18の開弁の際に洗浄水が
前記電磁弁16を開弁して洗剤水とされている場合は、洗
剤水が温水装置６内に混入されないよう、弁21を閉じ、
弁22を開いて洗剤水を本体１外へ排出するよう管路の切
換えを行なう。20 is a discharge pipe branching from the return pipe 19 and opening to the outside of the main body 1, 21 and 22 are solenoid valves provided in the pipes 19 and 20, 21 is normally open and 22 is closed. In this state, the pipe line 19 is formed so as to return the wash water to the hot water device 6. Here, when the unloader valve 18 is opened and cleaning water is used as detergent water by opening the solenoid valve 16, the valve 21 is closed so that the detergent water is not mixed into the water heater 6.
The valve 22 is opened and the pipeline is switched so that the detergent water is discharged to the outside of the main body 1.
25は前記帰還管路19に備えられる検出手段たる圧力スイ
ッチで、ポンプ９の駆動中に手元弁４が閉じられる等し
て前記アンローダバルブ18が開弁し、洗浄水の大部分が
帰還管路19へ流れ込んで所定圧以上（本例では10〜20kg
/cm2）の通水が生じたのを検出する。26は帰還管路19の
圧力スイッチ25より下流に位置して設けられる流量絞り
部で、オリフィス等により適宜管路抵抗を与えて圧力ス
イッチ25の作動を確実なものとする。Reference numeral 25 denotes a pressure switch which is a detection means provided in the return conduit 19, and the unloader valve 18 is opened by closing the hand valve 4 while the pump 9 is being driven, and most of the washing water is returned to the return conduit. It flows into 19 and exceeds a certain pressure (10 to 20 kg in this example).
/ cm 2 ) Water flow is detected. Reference numeral 26 is a flow restricting portion provided downstream of the pressure switch 25 in the return conduit 19, which ensures proper operation of the pressure switch 25 by giving an appropriate conduit resistance by means of an orifice or the like.
23は前記吐出側管路12に前記アンローダバルブ18により
開放される帰還管路19への分岐点より下流に位置して設
けられる逆止弁、24は該逆止弁23より更に下流に位置し
て吐出側管路12内の圧力を検出する圧力スイッチで、ポ
ンプ９の駆動に伴い吐出される洗浄水が所定圧（前記し
た通常の洗浄時の水圧より低く、本例では20〜50kg/c
m2）に至ったのを検出する。23 is a check valve provided in the discharge side pipeline 12 downstream of a branch point to the return pipeline 19 opened by the unloader valve 18, and 24 is further downstream of the check valve 23. Is a pressure switch for detecting the pressure in the discharge side conduit 12, and the cleaning water discharged when the pump 9 is driven is at a predetermined pressure (lower than the water pressure during the normal cleaning described above, 20 to 50 kg / c in this example).
detects that the led to the m 2).
以上の構成を有する洗浄装置において、ポンプ９が駆動
しスプレーノズル３の手元弁４が開弁されるとスプレー
洗浄が開始され、その噴射される洗浄水は、温水装置６
においてバーナ８を運転しなければ冷水、運転すれば温
水、更に電磁弁16を開けば洗剤水となる。ポンプ９の駆
動中、手元弁４が閉じられると、吐出側管路12内の洗浄
水圧が上昇しアンローダバルブ18が押し開かれ、洗浄水
は帰還管路19により温水装置６内へ戻される。更にこの
状態で手元弁４が再び開弁されると、洗浄水はスプレー
ガン３側に開放されアンローダバルブ18を開弁していた
水圧が急激に失われてアンローダバルブ18が閉じ、スプ
レー洗浄が再開される。In the cleaning device having the above configuration, when the pump 9 is driven and the hand valve 4 of the spray nozzle 3 is opened, spray cleaning is started and the sprayed cleaning water is supplied from the warm water device 6
When the burner 8 is not operated, it becomes cold water, when it is operated, it becomes warm water, and when the solenoid valve 16 is opened, it becomes detergent water. When the hand valve 4 is closed while the pump 9 is being driven, the cleaning water pressure in the discharge side conduit 12 rises, the unloader valve 18 is pushed open, and the cleaning water is returned to the warm water device 6 by the return conduit 19. When the hand valve 4 is opened again in this state, the cleaning water is released to the spray gun 3 side, the water pressure that had opened the unloader valve 18 is suddenly lost, the unloader valve 18 is closed, and the spray cleaning is performed. It will be restarted.
圧力スイッチ25は、ポンプ９駆動中に手元弁４が閉じら
れアンローダバルブ18が開弁されて、ポンプ９からの全
洗浄水が帰還管路19内に流れることによってON状態とな
り、手元弁４が再開されアンローダバルブ18が閉じる
と、これに応じてOFF状態となる。従って、圧力スイッ
チ25は、ポンプ９駆動中の手元弁４の開閉に応じてON/O
FFされることになる。The pressure switch 25 is turned on when the hand valve 4 is closed and the unloader valve 18 is opened while the pump 9 is being driven, and all the washing water from the pump 9 flows into the return conduit 19 to turn the hand valve 4 on. When it is restarted and the unloader valve 18 is closed, the OFF state is correspondingly generated. Therefore, the pressure switch 25 is turned ON / O according to the opening / closing of the hand valve 4 while the pump 9 is being driven.
It will be FF.
一方、圧力スイッチ24は、ポンプ９の駆動に伴う洗浄水
の吐出圧を検出してON状態となり、途中で手元弁４が閉
じられアンローダバルブ18が開いた後も、逆止弁23によ
り該弁23の下流の管路内は蓄圧された状態となりON状態
が保持される。従って圧力スイッチ24は、ポンプ９の駆
動停止後に手元弁４が開かれて、逆止弁23下流の管路が
スプレーガン３において開放されるまでOFFされること
はない。On the other hand, the pressure switch 24 is turned on by detecting the discharge pressure of the wash water accompanying the driving of the pump 9, and even after the hand valve 4 is closed and the unloader valve 18 is opened on the way, the check valve 23 causes the valve to turn off. The pressure in the downstream pipeline of 23 is accumulated and the ON state is maintained. Therefore, the pressure switch 24 is not turned off until the hand valve 4 is opened after the driving of the pump 9 is stopped and the pipeline downstream of the check valve 23 is opened in the spray gun 3.
第２図は上記実施例の制御系を示すブロック図である。
30は洗浄装置本体１の前面に設けられる操作パネルで、
電源スイッチ31のほか、洗浄の開始又は終了の操作を行
なう運転キー32、スプレーしている洗浄水の区別を点灯
表示するＬＥＤ33−１〜３より成る表示部34が備えられ
ている。FIG. 2 is a block diagram showing the control system of the above embodiment.
30 is an operation panel provided on the front surface of the cleaning apparatus main body 1,
In addition to the power switch 31, an operation key 32 for starting or ending the cleaning operation and a display section 34 including LEDs 33-1 to 3-3 for illuminating and displaying the distinction of the sprayed cleaning water are provided.
35は制御部で、操作パネル30及び前記圧力スイッチ24・
25からの信号に応じて各部の制御を行なうもので、温水
装置６におけるバーナ８の駆動回路36、ポンプ９の駆動
回路37、電磁弁16の駆動回路38、電磁弁21・22の駆動回
路39、表示部34の駆動回路40、及び制御回路41から成っ
ている。制御回路41は、入出力回路42・ＣＰＵ43及びメ
モリ回路44から成り、いわゆるマイクロコンピュータを
構成している。Reference numeral 35 denotes a control unit, which includes the operation panel 30 and the pressure switch 24.
Each part is controlled in response to a signal from 25. The drive circuit 36 for the burner 8 in the water heater 6, the drive circuit 37 for the pump 9, the drive circuit 38 for the solenoid valve 16, the drive circuit 39 for the solenoid valves 21 and 22. The display unit 34 includes a drive circuit 40 and a control circuit 41. The control circuit 41 includes an input / output circuit 42, a CPU 43 and a memory circuit 44, and constitutes a so-called microcomputer.
第３図は上記実施例のメモリ回路44に書き込まれたプロ
グラムの概要を表すフローチャート図、第４図はポンプ
９及び圧力スイッチ24・25それぞれの作動状態を表すタ
イムチャート図で、以下この両図を基に実施例の具体的
動作を説明する。FIG. 3 is a flow chart showing the outline of the program written in the memory circuit 44 of the above embodiment, and FIG. 4 is a time chart showing the operating states of the pump 9 and the pressure switches 24 and 25, respectively. The specific operation of the embodiment will be described based on FIG.
操作パネル30において電源ONされるとプログラムスター
トする。操作パネル30において運転キー32が押されると
（１）、ポンプ９を駆動すると共に表示部34においてＬ
ＥＤ33−１を点灯し（２）、まず冷水スプレーのモード
で運転を開始する。When the power is turned on in the operation panel 30, the program starts. When the operation key 32 on the operation panel 30 is pressed (1), the pump 9 is driven and L is displayed on the display unit 34.
The ED 33-1 is turned on (2), and operation is first started in the cold water spray mode.
次に圧力スイッチ24・25の状態をモニタし、スプレーガ
ン３において手元弁４が開弁されてスプレー洗浄が開始
されたか否かを確認する（３）。すなわち、ポンプ９が
起動すると圧力スイッチ24がONに転じ、更に作業開始前
で手元弁４が閉じられているアンローダバルブ18が押し
開かれて圧力スイッチ25がONに転じる。この状態で手元
弁４が開かれると、アンローダバルブ18が閉じて圧力ス
イッチ25がOFFに転じるのである。Next, the states of the pressure switches 24 and 25 are monitored to confirm whether or not the hand valve 4 of the spray gun 3 has been opened and spray cleaning has started (3). That is, when the pump 9 is started, the pressure switch 24 is turned on, and further, the unloader valve 18 in which the hand valve 4 is closed before the start of work is pushed open and the pressure switch 25 is turned on. When the hand valve 4 is opened in this state, the unloader valve 18 is closed and the pressure switch 25 is turned off.
こうしてステップ（３）で手元弁４の開弁が一旦確認さ
れると、引き続いて圧力スイッチ24・25の状態をモニタ
し手元弁４が閉弁されたか否かを監視する（４）。すな
わち、手元弁14が閉じられアンローダバルブ18が開弁し
て圧力スイッチ25がONに転じるのを検出する。Once the opening of the hand valve 4 is thus confirmed in step (3), the states of the pressure switches 24 and 25 are subsequently monitored to monitor whether or not the hand valve 4 is closed (4). That is, it is detected that the hand valve 14 is closed, the unloader valve 18 is opened, and the pressure switch 25 is turned ON.
ステップ（４）で手元弁４が閉じられたのを検出する
と、洗浄水が洗剤水である洗剤モードで成されていたか
否かを確認し（５）、洗剤モードであれば電磁弁16を閉
じると共に一定時間Ｔ０（本例では２〜３秒）の間だけ
電磁弁21を閉じ、電磁弁22を開いて（６）、前記帰還管
路19へ流入した洗剤水を管路20より本体１外へ排出す
る。When it is detected in step (4) that the hand valve 4 is closed, it is confirmed whether or not the washing water is in the detergent mode which is the detergent water (5), and if it is the detergent mode, the solenoid valve 16 is closed. At the same time, the electromagnetic valve 21 is closed and the electromagnetic valve 22 is opened (6) only for a certain time T 0 (2 to 3 seconds in this example), and the detergent water flowing into the return conduit 19 is supplied from the conduit 20 to the main body 1. Discharge to the outside.
更に、ステップ（４）で手元弁４が閉弁された時点から
タイムカウントを始め、一定時間Ｔ１（本例では２〜３
秒）の間に圧力スイッチ25の状態に変化が生じたか否
か、すなわち手元弁４が再び開弁されて圧力スイッチ25
がOFFに転じたか否かを監視する（７）。Further, time counting is started from the time when the hand valve 4 is closed in step (4), and a fixed time T 1 (2 to 3 in this example) is obtained.
Whether the state of the pressure switch 25 has changed during the second), that is, the hand valve 4 is opened again and the pressure switch 25
It is monitored whether is turned off (7).
ここで、変化が認められれば、洗剤水の切換命令有りと
判断して、ステップ（８）（９）においてそれまで噴射
していた洗浄水が水・温水又は洗剤水のいずれであった
かを確認し、冷水モードであれば温水装置６のバーナ８
を運転して温水モードに切換え(10)、温水モードであれ
ば更に電磁弁16を開いて洗剤モードに切換え(11)、洗剤
モードであればバーナ８の運転を停止すると共に電磁弁
６を閉じて冷水モードに切換える(12)、といったように
動作し、それぞれ洗浄水を切り換えてスプレー洗浄が再
開される。If a change is recognized here, it is determined that there is a detergent water switching command, and in steps (8) and (9) it is confirmed whether the washing water that had been sprayed until then was water / warm water or detergent water. In the cold water mode, the burner 8 of the hot water device 6
To switch to the hot water mode (10), open the solenoid valve 16 to switch to the detergent mode in the hot water mode (11), and stop the burner 8 operation and close the solenoid valve 6 in the detergent mode. Then, the operation is switched to the cold water mode (12), the cleaning water is switched, and the spray cleaning is restarted.
前記ステップ（７）で変化が認められなければ、更に一
定時間Ｔ２（本例ではＴ１＋Ｔ２＝10秒）待機し(13)、
この間に手元弁４が開かれるといった操作が一度もなけ
ればポンプ９の運転を停止する(14)。一方その間に手元
弁４が開かれて圧力スイッチ25がOFFに転じれば、まず
それまで実行していたモードを確認し(15)、洗剤モード
であればステップ（６）で閉じられている電磁弁16を開
く(16)よう動作してステップ（３）へリタンし、それま
で行なっていたモードのまま洗浄を再開する。If no change is recognized in the step (7), a certain time T 2 (T 1 + T 2 = 10 seconds in this example) is further waited (13),
If the hand valve 4 is never opened during this time, the operation of the pump 9 is stopped (14). On the other hand, if the hand valve 4 is opened and the pressure switch 25 is turned off during that time, first check the mode that has been executed up to that time (15), and if it is the detergent mode, the electromagnetic valve closed in step (6). The valve 16 is operated to open (16), and the process returns to step (3), and the cleaning is restarted in the same mode as it was.
ステップ(14)においてポンプ停止後、更に一定時間Ｔ３
（本例では３分）の間何ら変化もなく放置されるか(1
7)、操作パネル30において運転キー32が押されると(1
8)、洗浄作業終了と判断して表示部34のＬＥＤ33を消灯
しバーナ８を停止、電磁弁16を開き(19)リタンする。一
方、前記Ｔ３の間に開弁されると、これを圧力スイッチ
24で検出して(20)、ポンプ９を駆動し(21)ステップ(15)
(16)を介してステップ（３）よりそれ以前に行なってい
たモードのまま洗浄を開始する。After the pump is stopped in step (14), T 3
Is it left without any change for 3 minutes in this example (1
7) When the operation key 32 on the operation panel 30 is pressed (1
8) When it is judged that the cleaning work is completed, the LED 33 of the display unit 34 is turned off, the burner 8 is stopped, and the solenoid valve 16 is opened (19) to return. On the other hand, if the valve is opened during the T 3 , the pressure switch
Detect at 24 (20), drive pump 9 (21) Step (15)
Through step (16), the cleaning is started in the mode used before step (3).
尚、ステップ(20)では、ポンプ９の停止により圧力スイ
ッチ25はOFFされている一方で、圧力スイッチ24は逆止
弁23の作用で逆止弁23下流の管路に洗浄水圧が蓄圧され
ON状態に保持されており、手元弁４が開弁され、前記蓄
圧された水圧がスプレーガン３より開放されて圧力スイ
ッチ24がOFFに転じるのを検出している。In step (20), the pressure switch 25 is turned off by stopping the pump 9, while the pressure switch 24 accumulates the wash water pressure in the pipeline downstream of the check valve 23 by the action of the check valve 23.
It is held in the ON state, the hand valve 4 is opened, and it is detected that the accumulated water pressure is released from the spray gun 3 and the pressure switch 24 is turned OFF.
上記のごとく、本実施例では２個の圧力スイッチ24・25
をモニタすることにより、各状態での手元弁４の開閉操
作を検出し、これにより使用者の命令を判断して、ポン
プ９のON/OFFをはじめ、洗浄水の切換えを行なってい
る。すなわち、洗浄中に手元弁４が閉じられ一定時間Ｔ
１以内に手元弁４が再び開弁されれば、洗浄水切換命令
と判断して洗浄水の切換えを行ない、前記Ｔ１以内に開
弁されなければ待機中と判断し、それまでの洗浄水のモ
ードを切換えることなく再動作可能な状態でＴ２＋Ｔ３
の間待機する。待機時間中、Ｔ２だけ経過するとポンプ
９を停止して、動力の節減を計っている。As described above, the two pressure switches 24 and 25 are used in this embodiment.
By monitoring the open / close operation of the hand valve 4 in each state, the user's command is judged based on this, and ON / OFF of the pump 9 and switching of washing water are performed. That is, the hand valve 4 is closed during the cleaning for a certain time T
If the hand valve 4 is opened within 1 again, it is judged that it is a washing water switching command, and the washing water is switched. If it is not opened within the above T 1 , it is judged to be on standby, and the washing water up to that point. T 2 + T 3 in a state where re-operation is possible without switching the mode of
Wait for a while. During the standby time, the pump 9 is stopped after a lapse of T 2 to save power.
なお、上記実施例ではアンローダーバルブ18と逆止弁23
とを別々に設けた例を示したが、逆止弁構造を具備した
公知の調圧機能付きアンローダバルブを用いれば、改め
て逆止弁23を設ける必要がない。また実施例では、手元
弁４の開閉を検出する手段として帰還流路19の水圧上昇
によりアンローダバルブの開閉状態を検知する圧力スイ
ッチ25を用いたが、この他にも例えばアンローダバルブ
18が開くときの機械動作を検出するマイクロスイッチ等
を用いることができる。In the above embodiment, the unloader valve 18 and the check valve 23
Although an example in which and are separately provided is shown, if a known unloader valve with a pressure adjusting function having a check valve structure is used, it is not necessary to provide the check valve 23 again. Further, in the embodiment, as the means for detecting the opening / closing of the hand valve 4, the pressure switch 25 for detecting the open / closed state of the unloader valve by increasing the water pressure in the return flow path 19 is used.
It is possible to use a micro switch or the like that detects a mechanical operation when the 18 is opened.
［発明の効果］ このように本発明によれば、検出手段と圧力スイッチと
によりスプレーガンにおける手元弁の開閉状態を検出
し、これに応じてポンプの駆動制御をはじめ従来成し得
なかった洗浄水の切換え操作を行えるため、作業者はス
プレーガンの手元で開閉操作するだけで洗浄作業に必要
な操作をすべて遠隔で行うことができる。[Effects of the Invention] As described above, according to the present invention, the open / closed state of the hand valve in the spray gun is detected by the detection means and the pressure switch, and accordingly, the cleaning of the drive control of the pump, which cannot be accomplished conventionally, can be achieved. Since water switching operation can be performed, the operator can remotely perform all the operations required for the cleaning work by simply opening and closing the spray gun.
第１図は本発明一実施例の構成説明図。 第２図は実施例の制御系を示すブロック図。 第３図は実施例の動作プログラムの概要を示すフローチ
ャート図。 第４図は実施例の作動を表すタイムチャート図。 １は洗浄装置本体、３はスプレーガン、４は手元弁、９
はポンプ、18はアンローダバルブ、19は帰還管路、23は
逆止弁、24は圧力スイッチ、25は検出手段たる圧力スイ
ッチ、35は制御手段たる制御部。FIG. 1 is a structural explanatory view of an embodiment of the present invention. FIG. 2 is a block diagram showing a control system of the embodiment. FIG. 3 is a flow chart showing the outline of the operation program of the embodiment. FIG. 4 is a time chart showing the operation of the embodiment. 1 is a cleaning device main body, 3 is a spray gun, 4 is a hand valve, 9
Is a pump, 18 is an unloader valve, 19 is a return line, 23 is a check valve, 24 is a pressure switch, 25 is a pressure switch as a detection means, and 35 is a control section as a control means.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 実公 昭62−18308（ＪＰ，Ｙ２) 実公 平３−26957（ＪＰ，Ｙ２) ─────────────────────────────────────────────────── ─── Continuation of the front page (56) Bibliography Sho 62-18308 (JP, Y2) Hei 3-26957 (JP, Y2)
Claims (1)
種類以上の洗浄水を切り換えてポンプで圧送し、手元弁
付きのスプレーガンより噴射させる方式のスプレー洗浄
装置において、前記ポンプの吐出側管路の水圧に応じて
開弁され洗浄水を前記ポンプの吸込側へ帰還させるアン
ローダバルブと、前記ポンプ駆動時におけるアンローダ
バルブの開閉状態に応じ前記手元弁の開閉を検出する手
段と、前記ポンプの吐出側管路にあって前記アンローダ
バルブの下流側に位置する逆止弁と、該逆止弁と前記ス
プレーガンとの間に位置し前記吐出側管路内の水圧が通
常の洗浄作業時より低い設定圧以下となったことを検出
する圧力スイッチと、前記検出手段および圧力スイッチ
からの信号に応じて下記ａ〜ｃの制御を与える制御手段
とを備えたことを特徴とするスプレー洗浄装置。 ａ．前記ポンプが駆動した洗浄作業中に前記手元弁が閉
じられたのを前記検出手段で検出し、この状態が所定時
間以上継続すると、ポンプの駆動を停止する。 ｂ．前記ポンプが駆動した洗浄作業中に前記手元弁が閉
じられたのを前記検出手段で検出し、この状態が所定時
間以内に手元弁が再び開かれて解除されると、前記洗浄
水を異なるものに切り換える。 ｃ．前記ａに伴う前記ポンプの停止中に、前記手元弁が
開かれて前記圧力スイッチが前記設定圧以下の水圧を検
出すると、ポンプを再駆動させる。1. Cold water, hot water, detergent water, etc. which are different from each other 2.
In a spray cleaning device of a type in which more than one type of cleaning water is switched and pressure-fed by a pump and sprayed from a spray gun equipped with a hand valve, the cleaning water is opened according to the water pressure of the discharge side pipe line of the pump. An unloader valve for returning to the suction side, a means for detecting the opening / closing of the hand valve according to the open / closed state of the unloader valve when the pump is driven, and a position in the discharge side pipeline of the pump downstream of the unloader valve A check valve, and a pressure switch that is located between the check valve and the spray gun and detects that the water pressure in the discharge side pipe line has become lower than or equal to a preset pressure lower than during normal cleaning work, A spray cleaning device comprising: a control means for performing the following a to c controls in response to signals from the detection means and the pressure switch. a. The detection means detects that the hand valve is closed during the cleaning operation driven by the pump, and when this state continues for a predetermined time or longer, the drive of the pump is stopped. b. When the detection means detects that the hand valve is closed during the cleaning operation driven by the pump, and this state is opened and released again within a predetermined time, the wash water is changed. Switch to. c. When the hand valve is opened and the pressure switch detects a water pressure equal to or lower than the set pressure while the pump is stopped due to the a, the pump is re-driven.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24856986A JPH069678B2 (en) | 1986-10-20 | 1986-10-20 | Spray cleaning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24856986A JPH069678B2 (en) | 1986-10-20 | 1986-10-20 | Spray cleaning device |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5100347A Division JP2527127B2 (en) | 1993-04-01 | 1993-04-01 | Spray cleaning device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63104691A JPS63104691A (en) | 1988-05-10 |
| JPH069678B2 true JPH069678B2 (en) | 1994-02-09 |
Family
ID=17180090
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24856986A Expired - Lifetime JPH069678B2 (en) | 1986-10-20 | 1986-10-20 | Spray cleaning device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH069678B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6157871B2 (en) * | 2013-02-19 | 2017-07-05 | 株式会社モリタホールディングス | High pressure washing device and high pressure washing car |
| JP6375415B2 (en) * | 2017-06-06 | 2018-08-15 | 株式会社モリタホールディングス | High pressure washing device and high pressure washing car |
| DE102018121922A1 (en) * | 2018-09-07 | 2020-03-12 | Alfred Kärcher SE & Co. KG | Hot water cleaning device and method for operating a hot water cleaning device |
-
1986
- 1986-10-20 JP JP24856986A patent/JPH069678B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63104691A (en) | 1988-05-10 |
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