JP4058016B2 - Car wash machine - Google Patents

Car wash machine Download PDF

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JP4058016B2
JP4058016B2 JP2004120789A JP2004120789A JP4058016B2 JP 4058016 B2 JP4058016 B2 JP 4058016B2 JP 2004120789 A JP2004120789 A JP 2004120789A JP 2004120789 A JP2004120789 A JP 2004120789A JP 4058016 B2 JP4058016 B2 JP 4058016B2
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valve
water
air
pipe
nozzle
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JP2005297921A (en
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英二 竹内
憲 竹村
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タケウチテクノ株式会社
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Description

本発明は、往復走行可能な洗車機本体と、その洗車機本体へ給水する給水管路と、洗車機本体に設けられたノズルと、そのノズルと給水管路間を接続するノズル管路とを備えた洗車機、特にその給水管路及びノズル管路内の水を圧縮空気で排出して該管路の凍結を防止できるようにした洗車機に関する。   The present invention includes a car wash machine main body capable of reciprocating, a water supply pipe for supplying water to the car wash machine main body, a nozzle provided in the car wash machine main body, and a nozzle pipe connecting the nozzle and the water supply pipe. More particularly, the present invention relates to a car wash machine in which water in the water supply pipe line and nozzle pipe line is discharged with compressed air so that the pipe line can be prevented from freezing.

上記洗車機は、従来から知られている(例えば、下記の特許文献1を参照)。   The said car wash machine is known conventionally (for example, refer the following patent document 1).

この特許文献1に記載される洗車機は、給水管路の谷部に設けられ給水圧では開弁しないリリーフ弁と、ノズル管路を開閉し得る水用開閉弁と、リリーフ弁の開弁圧以上の圧力の圧縮空気を給水管路に供給する空気管路と、その空気管路を開閉し得る空気用開閉弁とを備え、給水管路及びノズル管路の凍結防止のために、水用開閉弁を閉じた状態で空気用開閉弁を開弁して圧縮空気により給水管路内の水をリリーフ弁から排出し、また水用開閉弁及び空気用開閉弁を同時に開弁して圧縮空気によりノズル管路内の水を排出するようにしている。
実公平3−7247号公報
The car wash machine described in Patent Document 1 includes a relief valve that is provided in a trough portion of a water supply pipe and does not open by a water supply pressure, a water on-off valve that can open and close a nozzle pipe, and a valve opening pressure of the relief valve. It is equipped with an air line that supplies compressed air of the above pressure to the water supply line, and an air on-off valve that can open and close the air line, and for water prevention to prevent freezing of the water supply line and the nozzle line With the open / close valve closed, the air open / close valve is opened and the water in the water supply line is discharged from the relief valve by compressed air, and the water open / close valve and the air open / close valve are simultaneously opened for compressed air. Thus, the water in the nozzle pipe is discharged.
No. 3-7247

一般に洗車機においては、ノズル管路内の通路空間は狭い部分があり且つ曲がりくねっているため、水が排出されにくい。そして、その通路空間に残留する水を十分に抜かなければ、寒冷時にその残留水が凍結してノズル管路や口径の小さなノズルを破損させたり、ノズルから水が出なくなる等の問題が生じることがある。   In general, in a car wash machine, the passage space in the nozzle pipe has a narrow portion and is winding, so that water is not easily discharged. If the water remaining in the passage space is not sufficiently drained, there will be problems such as freezing of the residual water at the time of cold and damage to the nozzle pipe and the nozzle having a small diameter, or water from being discharged from the nozzle. There is.

ところで上記特許文献1に記載の洗車機では、寒冷時に凍結防止のためにノズル管路内の水を排出するに当たり、水用開閉弁及び空気用開閉弁を同時に開弁して圧縮空気をノズル管路内に導入するようにしているので、水用開閉弁の前後で圧力差が殆ど無い状態からノズル管路内への圧縮空気の導入が開始され、その導入が開始された後も水用開閉弁の前後で圧力差が小さいため、水用開閉弁内やノズル管路内の水を効率よく排出できず、圧縮空気の消費量が多くなってエネルギーコストが嵩む問題があった。   By the way, in the car wash machine described in the above-mentioned Patent Document 1, when water in the nozzle pipe is discharged to prevent freezing when it is cold, the water on-off valve and the air on-off valve are simultaneously opened to allow compressed air to flow into the nozzle pipe. Since the air is introduced into the passage, the introduction of compressed air into the nozzle pipe is started from a state where there is almost no pressure difference before and after the water on-off valve, and the water opening and closing is started after the introduction is started. Since the pressure difference before and after the valve is small, the water in the water on-off valve or the nozzle pipe cannot be efficiently discharged, and there is a problem that the consumption of compressed air increases and the energy cost increases.

本発明は、上記問題に鑑みてなされたもので、できるだけ少ない圧縮空気量でノズル管路内の水抜きを効率よく行なえるようにして、従来の上記問題を解決し得る洗車機を提供することを目的とする。   The present invention has been made in view of the above problems, and provides a car wash machine capable of solving the above-described conventional problems by efficiently draining water in a nozzle pipe with as little compressed air as possible. With the goal.

上記目的を達成するために、請求項1の発明は、往復走行可能な洗車機本体と、その洗車機本体へ給水する給水管路と、その給水管路の谷部に設けられ給水圧では開弁しないリリーフ弁と、前記洗車機本体に設けられたノズルと、そのノズルと前記給水管路間を接続するノズル管路と、そのノズル管路を開閉し得る水用開閉弁と、前記リリーフ弁の開弁圧以上の圧力の第1圧縮空気を前記給水管路に供給する第1空気管路と、その第1空気管路を開閉し得る第1空気用開閉弁とを備え、その第1空気用開閉弁から前記給水管路に供給した圧縮空気の圧力で前記リリーフ弁を開弁させて該給水管路内の水を該リリーフ弁から排出可能とした洗車機において、前記リリーフ弁の前記開弁圧よりも低い圧力の第2圧縮空気を前記給水管路に供給する第2空気管路と、その第2空気管路を開閉し得る第2空気用開閉弁と、前記水用開閉弁および前記第1空気用開閉弁の閉弁状態で前記第2空気用開閉弁を開弁して前記第2圧縮空気を前記開弁圧よりも低い圧力の状態で前記第2圧縮空気を前記給水管路に蓄えた後、前記第1空気用開閉弁の閉弁状態で前記水用開閉弁を開弁して、前記給水管路に蓄えられている前記第2圧縮空気により前記ノズル管路内の水を前記ノズルから排出するように、前記水用開閉弁並びに前記第1及び第2空気用開閉弁を制御する制御手段とを備えたことを特徴とする。 In order to achieve the above object, a first aspect of the present invention is a car wash machine main body capable of reciprocating, a water supply line for supplying water to the car wash machine main body, and provided at a trough of the water supply pipe and opened at a water supply pressure. A relief valve that does not valve, a nozzle provided in the car wash machine body, a nozzle conduit that connects the nozzle and the water supply conduit, a water on-off valve that can open and close the nozzle conduit, and the relief valve A first air pipe that supplies first compressed air having a pressure equal to or higher than the valve opening pressure to the water supply pipe, and a first air on-off valve that can open and close the first air pipe. In the car wash machine that opens the relief valve with the pressure of compressed air supplied to the water supply line from the air on-off valve and can discharge the water in the water supply line from the relief valve. Second compressed air having a pressure lower than the valve opening pressure is supplied to the water supply pipe. A second air on-off valve capable of opening and closing the second air pipe, and the second air on-off valve in a closed state of the water on-off valve and the first air on-off valve. and opening, after stored the second compressed air to the water supply conduit in the state of the second lower pressure than the compressed air the valve opening pressure, the in the closed state of the first air-off valve The water on-off valve and the first water on-off valve are opened so that the water in the nozzle pipe is discharged from the nozzle by the second compressed air stored in the water supply pipe. And a control means for controlling the second air on-off valve.

また請求項2の発明は、請求項1の上記特徴に加えて、前記第2空気管路は、前記洗車機本体内で前記給水管路に接続されることを特徴とする。   According to a second aspect of the present invention, in addition to the above feature of the first aspect, the second air pipe is connected to the water supply pipe in the car wash body.

また請求項3の発明は、往復走行可能な洗車機本体と、その洗車機本体へ給水する給水管路と、その給水管路の谷部に設けられ給水圧では開弁しないリリーフ弁と、前記洗車機本体に設けられたノズルと、そのノズルと前記給水管路間を接続するノズル管路と、そのノズル管路を開閉し得る水用開閉弁と、前記リリーフ弁の開弁圧以上の圧力の圧縮空気を前記給水管路に供給する空気管路と、その空気管路を開閉し得る空気用開閉弁とを備え、その空気用開閉弁から前記給水管路に供給した圧縮空気の圧力で前記リリーフ弁を開弁させて該給水管路内の水を該リリーフ弁から排出可能とした洗車機において、前記給水管路内の圧力を検出する圧力検出手段と、前記ノズル管路内の水を前記ノズルから排出する前に、前記圧縮空気を前記給水管路に予め蓄えるべく、前記水用開閉弁を閉弁した状態で前記空気用開閉弁を開弁し、その開弁後、前記圧力検出手段が前記リリーフ弁の前記開弁圧より低い所定圧力を検出すると前記水用開閉弁を開弁して、前記給水管路に蓄えられている前記圧縮空気により前記ノズル管路内の水を前記ノズルから排出するように、前記水用開閉弁および前記空気用開閉弁を制御する制御手段とを備えたことを特徴とする。 The invention of claim 3, the round-trip travelable car wash machine body, a water supply pipe for supplying water to the wash machine body, a relief valve not open a provided supply water pressure troughs of the water supply conduit, A nozzle provided in the car wash machine main body, a nozzle conduit connecting the nozzle and the water supply conduit, a water on-off valve capable of opening and closing the nozzle conduit, and a pressure higher than a valve opening pressure of the relief valve A pressure of compressed air supplied to the water supply line from the air on-off valve, comprising an air line for supplying compressed air of pressure to the water supply line and an air on-off valve capable of opening and closing the air line In the car wash machine that enables the water in the water supply line to be discharged from the relief valve by opening the relief valve, pressure detecting means for detecting the pressure in the water supply line, and in the nozzle line Before discharging water from the nozzle, the compressed air is supplied to the water supply pipe. To store in advance in the opened water-off valve the air-off valve in a state of closed and later opened, the pressure detecting means detects a predetermined pressure lower than the valve opening pressure of the relief valve Then, the water on-off valve and the air are opened so that the water in the nozzle pipe is discharged from the nozzle by the compressed air stored in the water supply pipe. And a control means for controlling the on-off valve.

本発明において、リリーフ弁の「開弁圧」とは、通常は閉弁状態にあるリリーフ弁が開き始める所定限界圧力をいい、リリーフ弁は、これに作用する圧力が上昇して「開弁圧」に達すると開き始め、その圧力が更に上昇すると開き放しとなる。   In the present invention, the “valve opening pressure” of the relief valve means a predetermined limit pressure at which the relief valve that is normally in a closed state starts to open. ”Begins to open, and when the pressure rises further, it opens.

請求項1〜の各発明によれば、凍結防止のためにノズル管路内の水を排出するに当たり、給水管路内に予め蓄えた圧縮空気により水用開閉弁の前後に十分大きな圧力差を生じさせた状態で、水用開閉弁を開弁させるようにしたので、水用開閉弁及び空気用開閉弁を同時に開弁して圧縮空気をノズル管路内に導入するようなものと比べて、圧縮空気が高速でノズル管路内を流れるようにできて、水用開閉弁内及びノズル管路内の残留水をノズルから効率よく迅速に排出させることができ、これにより、水抜きに用いる圧縮空気量を低減できてエネルギーコストの節減が図られる。 According to each of the first to third aspects of the invention, when discharging the water in the nozzle pipe to prevent freezing, a sufficiently large pressure difference between the front and rear of the water on-off valve is caused by the compressed air stored in advance in the water supply pipe. Since the water on / off valve is opened in the state where the air is generated, compared to the case where the water on / off valve and the air on / off valve are simultaneously opened to introduce compressed air into the nozzle line. Compressed air can flow in the nozzle pipe at high speed, and the residual water in the water on-off valve and nozzle pipe can be discharged quickly and efficiently from the nozzle. The amount of compressed air used can be reduced, and energy costs can be reduced.

また特に請求項1の発明によれば、水用開閉弁及び第1空気用開閉弁の閉弁状態で第2空気管路から給水管路に供給され、蓄えられる第2圧縮空気は、給水管路の谷部に設けられるリリーフ弁の開弁圧よりも低圧であるので、この第2圧縮空気を給水管路に蓄える際に圧縮空気がリリーフ弁から流出する虞れがなく、その流出に因る圧縮空気の浪費を抑えることができる。 In particular, according to the first aspect of the present invention, the second compressed air supplied and stored from the second air line to the water supply line in a closed state of the water on-off valve and the first air on-off valve is supplied to the water supply pipe. Since the pressure is lower than the opening pressure of the relief valve provided in the valley of the passage, there is no possibility that the compressed air flows out from the relief valve when the second compressed air is stored in the water supply pipe. Waste of compressed air can be reduced.

また特に請求項2の発明によれば、第2圧縮空気を給水管路に導く第2空気管路は、洗車機本体内で給水管路に接続されるので、洗車機本体外の給水管路内の水が第2圧縮空気によって水用開閉弁側に流れることが回避され、これにより、第2圧縮空気を用いて水用開閉弁内及びノズル管路内を通って排出すべき水の量を極力少なくできるから、圧縮空気の消費量節減を図りながら、水用開閉弁内及びノズル管路内の水の排水効果をより向上させることができる。   In particular, according to the invention of claim 2, since the second air conduit for guiding the second compressed air to the water supply conduit is connected to the water supply conduit in the car wash machine main body, the water supply conduit outside the car wash machine main body is provided. The amount of water to be discharged through the water on-off valve and the nozzle conduit using the second compressed air is avoided by the flow of water inside the water on-off valve side by the second compressed air. Therefore, the drainage effect of water in the water on-off valve and the nozzle pipe can be further improved while reducing the consumption of compressed air.

また特に請求項3の発明によれば、ノズル管路内の水をノズルから排出する前に、圧縮空気を給水管路に予め蓄えるべく、水用開閉弁を閉弁した状態で空気用開閉弁を開弁し、その開弁後、圧力検出手段がリリーフ弁の開弁圧より低い所定圧力を検出すると水用開閉弁を開弁して、給水管路に蓄えられている圧縮空気によるノズル管路内排水が開始されるので、給水管路内における圧縮空気の実際の蓄圧状態に基づいてノズル管路内の排水開始時期(水用開閉弁の開弁時期)を的確に決めることができ、従って、給水管路に供給する圧縮空気の圧力が低下しても所定圧力で水用開閉弁を開弁できるから、給水管路に供給する圧縮空気の圧力の低下による排水効果の低下を防止できる。また上記圧縮空気を給水管路に蓄える際に圧縮空気がリリーフ弁から流出する虞れがなく、その流出に因る圧縮空気の浪費を抑えることができる。 In particular, according to the invention of claim 3, before the water in the nozzle pipe is discharged from the nozzle, in order to store the compressed air in the water supply pipe in advance, the water on-off valve is closed. After the valve is opened, when the pressure detecting means detects a predetermined pressure lower than the opening pressure of the relief valve, the water on-off valve is opened and the nozzle pipe by the compressed air stored in the water supply line is opened. Since drainage in the road is started, the drainage start time (opening timing of the water on-off valve) in the nozzle pipe can be accurately determined based on the actual pressure accumulation state of the compressed air in the water supply pipe, Therefore, even if the pressure of the compressed air supplied to the water supply pipe decreases, the water on-off valve can be opened at a predetermined pressure, so that it is possible to prevent the drainage effect from being lowered due to the pressure drop of the compressed air supplied to the water supply pipe. . Moreover, there is no possibility that the compressed air flows out from the relief valve when the compressed air is stored in the water supply pipe, and waste of the compressed air due to the outflow can be suppressed.

以下、本発明の実施の形態を、添付図面に例示した本発明の実施例および参考例に基づいて以下に具体的に説明する。 DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be specifically described below based on examples and reference examples of the present invention illustrated in the accompanying drawings.

添付図面において、図1〜図4は、本発明の第1実施例を示すものであって、図1は、洗車機の概略全体側面図、図2は前記洗車機の配管図、図3は、前記洗車機に用いた混合器の縦断面図、図4は、水抜き動作時における各弁の作動タイミングの一例を示すタイミングチャートである。また図5は、参考例に係る洗車機の配管図を示す図2対応図、図6は、参考例の水抜き動作時における各弁の作動タイミングの一例を示すタイミングチャート、図7は、本発明の第実施例に係る洗車機の配管図を示す図2対応図、図8は、水抜き動作時における各弁の作動タイミングの一例を示すタイミングチャートである。 1 to 4 show a first embodiment of the present invention, in which FIG. 1 is a schematic side view of a car wash machine, FIG. 2 is a piping diagram of the car wash machine, and FIG. FIG. 4 is a timing chart showing an example of the operation timing of each valve during the water draining operation. FIG. 5 is a diagram corresponding to FIG. 2 showing a piping diagram of the car wash machine according to the reference example, FIG. 6 is a timing chart showing an example of the operation timing of each valve during the draining operation of the reference example, and FIG. FIG. 2 is a diagram corresponding to FIG. 2 showing a piping diagram of the car wash machine according to the second embodiment of the invention, and FIG. 8 is a timing chart showing an example of the operation timing of each valve during the water draining operation.

先ず、図1〜図3を参照して、第1実施例について説明する。   First, the first embodiment will be described with reference to FIGS.

洗車機の洗車機本体1は、洗浄される自動車を跨ぎ得る門型フレーム2を備え、この門型フレーム2に設けた左右一対の前車輪3,3および左右一対の後車輪4,4は、設置面上に敷設した左右一対の走行レール5,5上を走行する。前車輪3,3には、門型フレーム2に設けた走行モータ6,6が連動、連結され、この走行モータ6,6を駆動することで、自動車の前後方向に沿って門型フレーム2を往復走行させることができる。   A car wash machine main body 1 of a car wash machine includes a gate-type frame 2 that can straddle a car to be cleaned, and a pair of left and right front wheels 3, 3 and a pair of left and right rear wheels 4, 4 provided on the gate-type frame 2 are: It travels on a pair of left and right traveling rails 5 and 5 laid on the installation surface. Traveling motors 6, 6 provided on the portal frame 2 are linked to and coupled to the front wheels 3, 3. By driving the traveling motors 6, 6, the portal frame 2 is moved along the longitudinal direction of the automobile. It can be reciprocated.

洗車機本体1後方の設置面上には、洗車機に供給される水を貯留する水槽45が設置され、その水槽45内には、そこに貯溜した水を吸引して吐出し得る給水ポンプ18が設けられる。この給水ポンプ18の吐出側に連なる吐出管46には逆止弁47が設けられており、その逆止弁47の出口側には、三叉に分岐した分岐管48の第1分岐路48aが接続されている。分岐管48の第2分岐路48bには、洗車機本体1内に連なる可撓性の給水ホース49の上流端が接続され、また分岐管48の第3分岐路48cには、後述する空気導管40aが接続される。   A water tank 45 for storing water supplied to the car wash machine is installed on the installation surface behind the car wash machine body 1, and a water supply pump 18 that can suck and discharge the water stored in the water tank 45. Is provided. The discharge pipe 46 connected to the discharge side of the water supply pump 18 is provided with a check valve 47, and the first branch path 48 a of the trifurcated branch pipe 48 is connected to the outlet side of the check valve 47. Has been. An upstream end of a flexible water supply hose 49 connected to the inside of the car wash machine body 1 is connected to the second branch path 48b of the branch pipe 48, and an air conduit described later is connected to the third branch path 48c of the branch pipe 48. 40a is connected.

水槽45又はその近く(図示例では、該水槽45の上部)には、洗車機に供給される圧縮空気を貯留するための空気タンク41が配設され、この空気タンク41には、これに圧縮空気を供給するコンプレッサー51が接続される。またその空気タンク41には、共通管路40kを介して前記空気導管40aと、洗車機本体1側に向かって延びる可撓性のエアホース40bとが互いに並列に接続される。その空気導管40aの途中には、第1空気用電磁弁52と、その下流側に位置する逆止弁50とが互いに直列に介装される。而して、前記共通管路40kと空気導管40aとは、互いに協働して請求項1の発明の第1空気管路A1を、また前記共通管路40kとエアホース40bとは互いに協働して請求項1の発明の第2空気管路A2を構成している。   An air tank 41 for storing compressed air supplied to the car wash machine is disposed at or near the water tank 45 (in the illustrated example, at the top of the water tank 45). A compressor 51 for supplying air is connected. The air tank 41 is connected in parallel with the air conduit 40a and a flexible air hose 40b extending toward the car wash machine main body 1 via a common conduit 40k. In the middle of the air conduit 40a, a first air solenoid valve 52 and a check valve 50 positioned downstream thereof are interposed in series. Thus, the common conduit 40k and the air conduit 40a cooperate with each other in the first air conduit A1 of the invention of claim 1, and the common conduit 40k and the air hose 40b cooperate with each other. Thus, the second air pipe A2 of the invention of claim 1 is constituted.

前記給水ホース49およびエアホース40bは、その途中が、設置面に傾倒可能に立設したポール53に支持され、ポール53は洗車機本体1の走行に伴い傾倒するようになっている。そして、給水ホース49の中間部には複数の谷部が形成され、その各々の谷部(図示例では谷部の底部から分岐した分岐管)には、開弁時に給水ホース49内を外部に開放するリリーフ弁54,55がそれぞれ設けられている。   The water supply hose 49 and the air hose 40b are supported by a pole 53 standing on the installation surface so that the water hose 49 and the air hose 40b can be tilted, and the pole 53 tilts as the car wash machine body 1 travels. A plurality of troughs are formed in the middle portion of the water supply hose 49, and each trough (a branch pipe branched from the bottom of the trough in the illustrated example) has the inside of the water supply hose 49 outside when the valve is opened. Relief valves 54 and 55 to be opened are provided, respectively.

洗車機本体1の門型フレーム2には、従来公知の洗浄手段、即ちトップブラシ7と、左右一対のサイドブラシ8,8と、トップノズル9と、左右一対のサイドノズル10,10と、複数の艶出し剤噴射用ノズル11を備えた艶出し剤噴射管12と、複数の洗剤噴射用ノズル13を備えた洗剤噴射管14と、複数の濯ぎ水噴射用ノズル15を備えた濯ぎ水噴射管16と、噴射制御部17とが設けられている。   The gate-type frame 2 of the car wash machine body 1 includes a conventionally known cleaning means, that is, a top brush 7, a pair of left and right side brushes 8, 8, a top nozzle 9, a pair of left and right side nozzles 10, 10, and a plurality of them. Polishing agent injection pipe 12 having a plurality of polishing agent injection nozzles 11, detergent injection pipe 14 having a plurality of detergent injection nozzles 13, and a rinsing water injection pipe having a plurality of rinsing water injection nozzles 15. 16 and the injection control part 17 are provided.

前記噴射制御部17は、前記給水ホース49の下流端に上流端が接続された分岐管19を備えており、この分岐管19の上部に並列に設けた上向きの第1〜第3分岐部には、艶出し剤噴射用ノズル11に艶出し剤を供給する第1ノズル管路N1と、複数の洗剤噴射用ノズル13に洗剤を供給する第2ノズル管路N2と、複数の濯ぎ水噴射用ノズル15に濯ぎ水を供給する第3ノズル管路N3とがそれぞれ接続される。   The injection control unit 17 includes a branch pipe 19 having an upstream end connected to the downstream end of the water supply hose 49, and the upward first to third branch parts provided in parallel above the branch pipe 19. Includes a first nozzle line N1 for supplying a polishing agent to the polishing agent injection nozzle 11, a second nozzle line N2 for supplying a detergent to the plurality of detergent injection nozzles 13, and a plurality of rinse water injections. A third nozzle pipe N3 for supplying rinsing water to the nozzle 15 is connected to each other.

また前記第1〜第3分岐部よりも上流側で分岐管19の下部に設けた下向きのドレン管には排水用電磁弁23が接続され、この排水用電磁弁23はその開弁時に分岐管19内を外部に連通させる。   A drainage solenoid valve 23 is connected to a downward drain pipe provided on the lower side of the branch pipe 19 on the upstream side of the first to third branch parts, and the drainage solenoid valve 23 is opened when the drainage solenoid valve 23 is opened. The inside of 19 is communicated with the outside.

第1ノズル管路N1は、分岐管19の第1分岐部より延びる艶出し剤送液管25と、その下流端に接続した前記艶出し剤噴射管12とで構成され、艶出し剤送液管25の途中には混合器26が設けられている。この混合器26の主通路の途中には、通路断面積を小さくした絞り26aが設けられ、その絞り26aの下流側に導入口27が開口している。この導入口27は、艶出し剤供給管28を介して艶出し剤タンク29に接続され、艶出し剤供給管28には、艶出し剤タンク29内の艶出し剤を吸引して混合器26に圧送する艶出し剤ポンプ30が設けられる。従ってその艶出し剤ポンプ30を作動すれば、艶出し剤送液管25を流れる水に艶出し剤を混合することができる。艶出し剤送液管25の上流端又はその近傍には、該送液管25を開閉し得る艶出し剤用電磁弁20が設けられる。   The first nozzle pipe N1 is composed of a polishing agent liquid supply pipe 25 extending from the first branch portion of the branch pipe 19, and the polishing agent injection pipe 12 connected to the downstream end thereof. A mixer 26 is provided in the middle of the tube 25. In the middle of the main passage of the mixer 26, a throttle 26a having a small passage cross-sectional area is provided, and an inlet 27 is opened downstream of the throttle 26a. The introduction port 27 is connected to a polishing agent tank 29 through a polishing agent supply pipe 28, and the polishing agent in the polishing agent tank 29 is sucked into the polishing agent supply pipe 28 to mix the mixer 26. A polishing agent pump 30 is provided for pumping to the interior. Therefore, if the polish agent pump 30 is operated, the polish agent can be mixed with the water flowing through the polish agent feeding pipe 25. A polishing agent solenoid valve 20 that can open and close the liquid supply pipe 25 is provided at or near the upstream end of the polish supply liquid pipe 25.

前記エアホース40bの下流端は、前記分岐管19の前記第3分岐部よりも下流側に接続しており、そのエアホース40bには、前記噴射制御部17内において、減圧弁39と、その下流側に位置してエアホース40bを開閉し得る第2空気用電磁弁38と、その下流側で且つ分岐管19近傍に位置する逆止弁24とが互いに直列に介装される。また前記エアホース40bの、前記減圧弁39より上流側からは分岐路42が分岐しており、この分岐路42は、空気用電磁弁43及び逆止弁44を介して前記艶出し剤供給管28の混合器26上流側で且つ艶出し剤用電磁弁20下流側に接続される。尚、この分岐路42から艶出し剤供給管28に供給される圧縮空気は、艶出し剤の発泡に利用される。   The downstream end of the air hose 40b is connected to the downstream side of the third branch portion of the branch pipe 19, and the air hose 40b includes a pressure reducing valve 39 and a downstream side thereof in the injection control unit 17. The second air solenoid valve 38 which is located at the position where the air hose 40b can be opened and closed and the check valve 24 which is located downstream and in the vicinity of the branch pipe 19 are interposed in series. A branch path 42 branches from the upstream side of the pressure hose 40 b of the air hose 40 b, and the branch path 42 is connected to the polishing agent supply pipe 28 via an air solenoid valve 43 and a check valve 44. Are connected to the upstream side of the mixer 26 and the downstream side of the solenoid valve 20 for the polishing agent. The compressed air supplied from the branch path 42 to the polishing agent supply pipe 28 is used for foaming of the polishing agent.

また、前記第2ノズル管路N2は、分岐管19の第2分岐部より延びる洗剤送液管31と、その下流端に接続した前記洗剤噴射管14とで構成され、洗剤送液管31の途中には混合器32が設けられている。この混合器32の構造は、前記混合器26と同様であり、その導入口33は、洗剤供給管34を介して洗剤タンク35に接続され、洗剤供給管34には、洗剤タンク35内の洗剤を吸引して混合器32に圧送する洗剤ポンプ36が設けられる。従ってその洗剤ポンプ36を作動すれば、洗剤送液管31を流れる水に洗剤を混合することができる。洗剤送液管31の上流端又はその近傍には、該送液管31を開閉し得る洗剤用電磁弁21が設けられる。   The second nozzle pipe N2 includes a detergent liquid feeding pipe 31 extending from the second branch portion of the branch pipe 19 and the detergent spray pipe 14 connected to the downstream end thereof. A mixer 32 is provided on the way. The structure of the mixer 32 is the same as that of the mixer 26, and its inlet 33 is connected to the detergent tank 35 via the detergent supply pipe 34, and the detergent supply pipe 34 has a detergent in the detergent tank 35. A detergent pump 36 is provided for sucking and pumping the liquid to the mixer 32. Therefore, if the detergent pump 36 is operated, the detergent can be mixed with the water flowing through the detergent feeding pipe 31. A detergent solenoid valve 21 that can open and close the liquid supply pipe 31 is provided at or near the upstream end of the detergent liquid supply pipe 31.

さらに、前記第3ノズル管路N3は、分岐管19の第3分岐部より延びる濯ぎ水送液管37と、その下流端に接続した前記濯ぎ水噴射管16とで構成される。濯ぎ水送液管37の上流端又はその近傍には、該送液管37を開閉し得る濯ぎ水用電磁弁22が設けられている。   Further, the third nozzle pipe N3 includes a rinsing water feed pipe 37 extending from the third branch portion of the branch pipe 19 and the rinsing water injection pipe 16 connected to the downstream end thereof. A rinsing water electromagnetic valve 22 capable of opening and closing the liquid feeding pipe 37 is provided at or near the upstream end of the rinsing water liquid feeding pipe 37.

前記給水ポンプ18による給水圧は最大0.4MPaに、また前記第1空気管路A1の第1空気用電磁弁52および逆止弁50を介して空気タンク41から給水ホース49に供給される第1空気圧は、前記給水圧よりも高い約0.99MPaに、また前記第2空気管路A2の減圧弁39、第2空気用電磁弁38および逆止弁24を介して空気タンク41から分岐管19に供給される第2空気圧は約0.5MPaに、また前記リリーフ弁54,55が開弁する圧力は約0.6MPaにそれぞれ設定される。したがって、リリーフ弁54,55は、前記給水圧および第2空気圧では開弁せず、第1空気圧で開弁するように設定されている。   The water supply pressure by the water supply pump 18 is 0.4 MPa at the maximum, and the first air solenoid valve 52 and the check valve 50 in the first air line A1 are supplied from the air tank 41 to the water supply hose 49. 1 air pressure is about 0.99 MPa higher than the water supply pressure, and is branched from the air tank 41 through the pressure reducing valve 39, the second air solenoid valve 38 and the check valve 24 in the second air line A2. The second air pressure supplied to 19 is set to about 0.5 MPa, and the pressure at which the relief valves 54 and 55 are opened is set to about 0.6 MPa. Therefore, the relief valves 54 and 55 are set not to open at the water supply pressure and the second air pressure but to open at the first air pressure.

門型フレーム2の前面には、制御盤56が設けられる。その制御盤56内には洗車機を制御する制御装置57が、また制御盤56の前面には水抜きスイッチ58が、また制御盤56の下面には、外気温を検出する温度センサー59がそれぞれ設けられている。前記制御装置57は、図示例ではマイクロコンピュータから構成されるもので、本発明の制御手段を構成している。   A control panel 56 is provided on the front surface of the portal frame 2. A control device 57 for controlling the car wash machine is provided in the control panel 56, a drain switch 58 is provided on the front surface of the control panel 56, and a temperature sensor 59 for detecting the outside air temperature is provided on the lower surface of the control panel 56. Is provided. The control device 57 is constituted by a microcomputer in the illustrated example, and constitutes the control means of the present invention.

而して前記第1実施例は、請求項1,2の発明に対応するものであって、給水ホース49及び分岐管19は、互いに協働して本発明の給水管路に該当する。また前記艶出し剤噴射用ノズル11、洗剤噴射用ノズル13及び濯ぎ水噴射用ノズル15は、本発明のノズルに該当する。また、前記第1〜第3ノズル管路N1〜N3は、本発明のノズル管路に該当する。また、艶出し剤用電磁弁20、洗剤用電磁弁21および濯ぎ水用電磁弁22は、本発明の水用開閉弁に該当する。また、第1空気用電磁弁52は本発明の第1空気用開閉弁に、第2空気用電磁弁38は本発明の第2空気用開閉弁にそれぞれ該当する。   Thus, the first embodiment corresponds to the inventions of claims 1 and 2, and the water supply hose 49 and the branch pipe 19 correspond to each other and correspond to the water supply pipe of the present invention. Further, the polishing agent spray nozzle 11, the detergent spray nozzle 13 and the rinse water spray nozzle 15 correspond to the nozzles of the present invention. The first to third nozzle pipes N1 to N3 correspond to the nozzle pipes of the present invention. Further, the polishing agent electromagnetic valve 20, the detergent electromagnetic valve 21, and the rinsing water electromagnetic valve 22 correspond to the water on-off valve of the present invention. The first air solenoid valve 52 corresponds to the first air on-off valve of the present invention, and the second air solenoid valve 38 corresponds to the second air on-off valve of the present invention.

次に、第1実施例の作用を、図4のタイミングチャートを併せて参照して説明する。   Next, the operation of the first embodiment will be described with reference to the timing chart of FIG.

洗車を終了した時点で温度センサー59が所定温度(本実施例では1°C)以下を検出していると、制御装置57は、自動的に水抜き動作を行うよう制御する。また、洗車機の待機中に作業員等により水抜きスイッチ58が押されると、制御装置57は水抜き動作を行うよう制御する。それらの水抜き動作は、本実施例では以下に説明する通りである。
[水抜き動作の説明]
(イ) 先ず、艶出し剤用電磁弁20、洗剤用電磁弁21および濯ぎ水用電磁弁22を閉弁状態としたまま、第1空気用電磁弁52と排水用電磁弁23とを開弁する。これにより、第1空気用電磁弁52から第1圧縮空気を給水ホース49に供給し、供給された該圧縮空気で給水ホース49内の水を排水用電磁弁23から排出する。そして、前記第1圧縮空気の供給により給水ホース49内の空気圧がリリーフ弁54,55を開弁する圧力以上に上昇すると、リリーフ弁54,55が開弁して、給水ホース49内の水をリリーフ弁54,55から排出する。
When the temperature sensor 59 detects a predetermined temperature (1 ° C. in this embodiment) or less at the time when the car wash is finished, the control device 57 controls to automatically perform the water draining operation. Further, when the drain switch 58 is pushed by an operator or the like while the car wash machine is on standby, the control device 57 controls to perform the drain operation. These draining operations are as described below in this embodiment.
[Description of draining operation]
(A) First, the first solenoid valve 52 and the drain solenoid valve 23 are opened while the polisher solenoid valve 20, the detergent solenoid valve 21 and the rinse water solenoid valve 22 are closed. To do. Accordingly, the first compressed air is supplied from the first air solenoid valve 52 to the water supply hose 49, and the water in the water supply hose 49 is discharged from the drainage electromagnetic valve 23 with the supplied compressed air. When the air pressure in the water supply hose 49 rises above the pressure for opening the relief valves 54 and 55 due to the supply of the first compressed air, the relief valves 54 and 55 are opened, and the water in the water supply hose 49 is drained. The pressure is discharged from the relief valves 54 and 55.

(ロ) 前記(イ)における第1空気用電磁弁52の開弁開始から所定時間t1(本実施例では約20秒)経過したら、第1空気用電磁弁52を閉弁する。これにより、前記(イ)において供給され給水ホース49及び分岐管19に蓄えられた圧縮空気で、給水ホース49内の水を排水用電磁弁23とリリーフ弁54,55とから排出する。そして、給水ホース49内の空気圧がリリーフ弁54,55を開弁する圧力未満に下降すると、リリーフ弁54,55が閉弁する。   (B) When the predetermined time t1 (about 20 seconds in this embodiment) has elapsed since the start of the opening of the first air solenoid valve 52 in (a), the first air solenoid valve 52 is closed. As a result, the water in the water supply hose 49 is discharged from the drain electromagnetic valve 23 and the relief valves 54 and 55 by the compressed air supplied in (a) and stored in the water supply hose 49 and the branch pipe 19. And if the air pressure in the water supply hose 49 falls below the pressure which opens the relief valves 54 and 55, the relief valves 54 and 55 will close.

(ハ) さらに所定時間t1経過したら、排水用電磁弁23を閉弁すると共に、艶出し剤用電磁弁20、洗剤用電磁弁21および濯ぎ水用電磁弁22を一斉に開弁する。これにより、前記(イ)において供給され給水ホース49及び分岐管19に蓄えられた圧縮空気で、艶出し剤送液管25および艶出し剤噴射管12内の水、洗剤送液管31および洗剤噴射管14内の水、濯ぎ水送液管37内および濯ぎ水噴射管16内の水をそれぞれノズル11、ノズル13、ノズル15から排出する。   (C) Further, when the predetermined time t1 has elapsed, the electromagnetic valve 23 for drainage is closed, and the electromagnetic valve 20 for polish, the electromagnetic valve 21 for detergent, and the electromagnetic valve 22 for rinsing water are simultaneously opened. Thereby, the compressed air supplied in (a) above and stored in the water supply hose 49 and the branch pipe 19 is used for the water, the detergent liquid supply pipe 31 and the detergent in the polishing agent liquid supply pipe 25 and the polishing agent injection pipe 12. Water in the injection pipe 14, water in the rinsing water feed pipe 37 and water in the rinsing water injection pipe 16 are discharged from the nozzle 11, nozzle 13, and nozzle 15, respectively.

(ニ) 前記(ハ)における電磁弁20,21,22の開弁開始から所定時間t2(本実施例では約10秒)経過したら、排水用電磁弁23を開弁すると共に艶出し剤用電磁弁20、洗剤用電磁弁21および濯ぎ水用電磁弁22を閉弁する。これにより、分岐管19内の水を排水用電磁弁23から排出する。   (D) When a predetermined time t2 (about 10 seconds in this embodiment) has elapsed since the start of opening of the solenoid valves 20, 21, 22 in (c), the drainage solenoid valve 23 is opened and the polisher electromagnetic The valve 20, the detergent solenoid valve 21 and the rinse water solenoid valve 22 are closed. Thereby, the water in the branch pipe 19 is discharged from the electromagnetic valve 23 for drainage.

(ホ) 前記(ニ)における排水用電磁弁23の開弁開始から所定時間t2経過したら、排水用電磁弁23を閉弁すると共に第1空気用電磁弁52を開弁する。これにより、第1空気用電磁弁52から第1圧縮空気を給水ホース49に供給する。そして、前記第1圧縮空気の供給により給水ホース49内の空気圧がリリーフ弁54,55を開弁する圧力以上に上昇すると、リリーフ弁54,55が開弁して、給水ホース49内の水をリリーフ弁54,55から排出する。   (E) When a predetermined time t2 has elapsed from the start of opening of the drainage solenoid valve 23 in (d), the drainage solenoid valve 23 is closed and the first air solenoid valve 52 is opened. As a result, the first compressed air is supplied from the first air solenoid valve 52 to the water supply hose 49. When the air pressure in the water supply hose 49 rises above the pressure for opening the relief valves 54 and 55 due to the supply of the first compressed air, the relief valves 54 and 55 are opened, and the water in the water supply hose 49 is drained. The pressure is discharged from the relief valves 54 and 55.

(へ) 前記(ホ)における第1空気用電磁弁52の開弁開始から所定時間t2経過したら、第1空気用電磁弁52を閉弁すると共に艶出し剤用電磁弁20を開弁する。これにより、前記(ホ)において供給され給水ホース49及び分岐管19に蓄えられた圧縮空気で、艶出し剤用電磁弁20、艶出し剤送液管25および艶出し剤噴射管12内の水をノズル11から排出する。このとき、艶出し剤用電磁弁20の前後で空気圧に大きな差が有る状態で艶出し剤用電磁弁20が開弁する。そのため、圧縮空気が艶出し剤用電磁弁20、艶出し剤送液管25および艶出し剤噴射管12内を高速で流れるので、艶出し剤用電磁弁20、艶出し剤送液管25および艶出し剤噴射管12内の水を効果的に排出することができる。   (F) When the predetermined time t2 has elapsed since the start of opening of the first air solenoid valve 52 in (e), the first air solenoid valve 52 is closed and the polisher solenoid valve 20 is opened. As a result, the compressed air supplied in (e) and stored in the water supply hose 49 and the branch pipe 19 causes the water in the polisher solenoid valve 20, the polisher feed pipe 25 and the polisher injection pipe 12 to flow. Is discharged from the nozzle 11. At this time, the polishing agent electromagnetic valve 20 is opened with a large difference in air pressure before and after the polishing agent electromagnetic valve 20. For this reason, the compressed air flows through the polishing agent electromagnetic valve 20, the polishing agent feeding pipe 25 and the polishing agent injection pipe 12 at a high speed, so that the polishing agent electromagnetic valve 20, the polishing agent feeding pipe 25 and The water in the polishing agent spray tube 12 can be discharged effectively.

そして、給水ホース49内の空気圧がリリーフ弁54,55を開弁する圧力未満に下降すると、リリーフ弁54,55が閉弁する。   And if the air pressure in the water supply hose 49 falls below the pressure which opens the relief valves 54 and 55, the relief valves 54 and 55 will close.

(ト) 前記(へ)における艶出し剤用電磁弁20の開弁開始から所定時間t3(本実施例では約5秒)経過したら、第2空気用電磁弁38を開弁すると共に艶出し剤用電磁弁20を閉弁する。これにより、第2空気用電磁弁38から供給される第2圧縮空気を給水ホース49及び分岐管19に蓄える。   (G) When the predetermined time t3 (about 5 seconds in this embodiment) has elapsed since the start of the opening of the solenoid valve 20 for the polishing agent in (F), the second air solenoid valve 38 is opened and the polishing agent is used. The electromagnetic valve 20 is closed. As a result, the second compressed air supplied from the second air solenoid valve 38 is stored in the water supply hose 49 and the branch pipe 19.

(チ) 前記(ト)における第2空気用電磁弁38の開弁開始から所定時間t3経過したら、第2空気用電磁弁38を閉弁すると共に洗剤用電磁弁21を開弁する。これにより、前記(ト)において蓄えた圧縮空気で、洗剤用電磁弁21、洗剤送液管31および洗剤噴射管14内の水をノズル13から排出する。このとき、洗剤用電磁弁21の前後で空気圧に大きな差が有る状態で洗剤用電磁弁21が開弁する。そのため、圧縮空気が洗剤用電磁弁21、洗剤送液管31および洗剤噴射管14内を高速で流れるので、洗剤用電磁弁21、洗剤送液管31および洗剤噴射管14内の水を効果的に排出することができる。   (H) When a predetermined time t3 has elapsed from the start of opening of the second air solenoid valve 38 in (g), the second air solenoid valve 38 is closed and the detergent solenoid valve 21 is opened. Thus, the water in the detergent solenoid valve 21, the detergent feeding pipe 31, and the detergent jet pipe 14 is discharged from the nozzle 13 with the compressed air stored in (g). At this time, the detergent solenoid valve 21 is opened with a large difference in air pressure before and after the detergent solenoid valve 21. Therefore, the compressed air flows through the detergent solenoid valve 21, the detergent feeding pipe 31, and the detergent jet pipe 14 at high speed, so that the water in the detergent solenoid valve 21, the detergent feeding pipe 31 and the detergent jet pipe 14 is effectively used. Can be discharged.

(リ) 前記(チ)における洗剤用電磁弁21の開弁開始から所定時間t3経過したら、第2空気用電磁弁38を開弁すると共に洗剤用電磁弁21を閉弁する。これにより、第2空気用電磁弁38から供給される第2圧縮空気を給水ホース49及び分岐管19に蓄える。   (I) When the predetermined time t3 has elapsed from the start of opening of the detergent solenoid valve 21 in (H), the second air solenoid valve 38 is opened and the detergent solenoid valve 21 is closed. As a result, the second compressed air supplied from the second air solenoid valve 38 is stored in the water supply hose 49 and the branch pipe 19.

(ヌ) 前記(リ)における第2空気用電磁弁38の開弁開始から所定時間t3経過したら、第2空気用電磁弁38を閉弁すると共に濯ぎ水用電磁弁22を開弁する。これにより、前記(リ)において蓄えた圧縮空気で、濯ぎ水用電磁弁22、濯ぎ水送液管37および濯ぎ水噴射管16内の水をノズル15から排出する。このとき、濯ぎ水用電磁弁22の前後で空気圧に大きな差が有る状態で濯ぎ水用電磁弁22が開弁する。そのため、圧縮空気が濯ぎ水用電磁弁22、濯ぎ水送液管37および濯ぎ水噴射管16内を高速で流れるので、濯ぎ水用電磁弁22、濯ぎ水送液管37および濯ぎ水噴射管16内の水を効果的に排出することができる。   (Nu) When the predetermined time t3 has elapsed since the start of opening of the second air solenoid valve 38 in (i) above, the second air solenoid valve 38 is closed and the rinsing water solenoid valve 22 is opened. Thus, the water in the rinsing water solenoid valve 22, the rinsing water feeding pipe 37 and the rinsing water jet pipe 16 is discharged from the nozzle 15 with the compressed air stored in (i). At this time, the rinsing water electromagnetic valve 22 is opened with a large difference in air pressure before and after the rinsing water electromagnetic valve 22. Therefore, the compressed air flows at high speed through the rinsing water solenoid valve 22, the rinsing water feed pipe 37 and the rinsing water jet pipe 16, so the rinsing water solenoid valve 22, the rinsing water feed pipe 37 and the rinsing water jet pipe 16. The water inside can be discharged effectively.

(ル) 前記(ヌ)における濯ぎ水用電磁弁22の開弁開始から所定時間t3経過したら、第2空気用電磁弁38を開弁すると共に濯ぎ水用電磁弁22を閉弁する。これにより、第2空気用電磁弁38から供給される第2圧縮空気を給水ホース49及び分岐管19に蓄える。   (L) When a predetermined time t3 has elapsed since the start of opening of the rinsing water solenoid valve 22 in (n), the second air solenoid valve 38 is opened and the rinsing water solenoid valve 22 is closed. As a result, the second compressed air supplied from the second air solenoid valve 38 is stored in the water supply hose 49 and the branch pipe 19.

(オ) 前記(ル)における第2空気用電磁弁38の開弁開始から所定時間t3経過したら、排水用電磁弁23を開弁すると共に第2空気用電磁弁38を閉弁する。これにより、前記(ル)において蓄えた圧縮空気で、分岐管19内の水を排水用電磁弁23から排出する。   (E) When a predetermined time t3 has elapsed from the start of opening of the second air solenoid valve 38 in (l), the drainage solenoid valve 23 is opened and the second air solenoid valve 38 is closed. Thereby, the water in the branch pipe 19 is discharged from the electromagnetic valve 23 for drainage with the compressed air stored in (l).

(ワ) 前記(オ)における排水用電磁弁23の開弁開始から所定時間t3経過したら、排水用電磁弁23を閉弁すると共に第1空気用電磁弁52を開弁する。これにより、第1空気用電磁弁52から第1圧縮空気を給水ホース49に供給する。そして、前記第1圧縮空気の供給により給水ホース49内の空気圧がリリーフ弁54,55を開弁する圧力以上に上昇すると、リリーフ弁54,55が開弁して、給水ホース49内の水をリリーフ弁54,55から排出する。   (W) When the predetermined time t3 has elapsed from the start of opening of the electromagnetic valve 23 for drainage in (E), the electromagnetic valve 23 for drainage is closed and the electromagnetic valve 52 for first air is opened. As a result, the first compressed air is supplied from the first air solenoid valve 52 to the water supply hose 49. When the air pressure in the water supply hose 49 rises above the pressure for opening the relief valves 54 and 55 due to the supply of the first compressed air, the relief valves 54 and 55 are opened, and the water in the water supply hose 49 is drained. The pressure is discharged from the relief valves 54 and 55.

(カ) そして、前記(へ)から(ワ)を所定回数繰り返し、所定回数繰り返したら最後の(ワ)では第1空気用電磁弁52を開弁せず、水抜き動作を終了する。尚、この(カ)において、前記(へ)中に「前記(ホ)」とあるのは「前記(ワ)」と読み替えるものとする。   (F) Then, (F) to (W) are repeated a predetermined number of times, and when the predetermined number of times are repeated, the first air solenoid valve 52 is not opened in the last (W), and the draining operation is terminated. In this (f), “(e)” in the (f) is read as “(e)”.

而して前記(ト)〜(ル)の工程は、請求項1の発明の特徴部分に対応するものであり、即ち、凍結防止のためにノズル管路N2,N3内の水を排出するに当たり、給水管路(給水ホース49、分岐管19)内に予め蓄えた第2圧縮空気により水用開閉弁(洗剤用電磁弁21、濯ぎ水用電磁弁22)の前後に十分大きな圧力差を生じさせた状態で、該水用開閉弁21,22を開弁させるようにしているため、従来技術のように水用開閉弁及び空気用開閉弁を同時に開弁して圧縮空気をノズル管路内に導入するようなものと比べて、圧縮空気が高速でノズル管路N2,N3内を流れるようにできて、水用開閉弁21,22内及びノズル管路N2,N3内の残留水をノズルから効率よく迅速に排出させることができ、これにより、水抜きに用いる圧縮空気量を低減できてエネルギーコストの節減できる。   Thus, the steps (g) to (l) correspond to the characterizing portion of the invention of claim 1, that is, in discharging water in the nozzle lines N2 and N3 to prevent freezing. The second compressed air previously stored in the water supply pipe (water supply hose 49, branch pipe 19) causes a sufficiently large pressure difference before and after the water on-off valve (detergent solenoid valve 21, rinse water solenoid valve 22). In this state, the water on-off valves 21 and 22 are opened, so that the water on-off valve and the air on-off valve are simultaneously opened as in the prior art, so that compressed air is allowed to enter the nozzle pipe. Compressed air can flow through the nozzle pipes N2 and N3 at a higher speed than that introduced into the nozzle, and the residual water in the water on-off valves 21 and 22 and the nozzle pipes N2 and N3 Can be drained efficiently and quickly, which can be used to drain water Possible savings in energy costs can be reduced compressed air quantity.

また特に本実施例によれば、第2圧縮空気は、リリーフ弁54,55の開弁圧よりも低圧であるので、この第2圧縮空気を給水管路(給水ホース49、分岐管19)に蓄える際に圧縮空気がリリーフ弁54,55から流出する虞れがなく、その流出に因る圧縮空気の浪費を抑えることができる。   In particular, according to the present embodiment, since the second compressed air is lower than the valve opening pressure of the relief valves 54 and 55, the second compressed air is supplied to the water supply line (water supply hose 49, branch pipe 19). When storing, there is no possibility that compressed air flows out from the relief valves 54 and 55, and waste of compressed air due to the outflow can be suppressed.

しかも本実施例では、第2圧縮空気を給水管路(給水ホース49、分岐管19)に導く第2空気管路A2が洗車機本体1内で該給水管路に接続されるので、洗車機本体1外の給水ホース49内の水が第2圧縮空気によってノズル管路N2,N3側に流れることが極力回避され、これにより、第2圧縮空気を用いてノズル管路N2,N3内を通って排出すべき水の量を極力少なくできるから、圧縮空気の消費量節減を図りながら、ノズル管路N2,N3内の水の排水効果をより向上させることができる。   In addition, in the present embodiment, the second air pipe A2 that guides the second compressed air to the water supply pipe (water supply hose 49, branch pipe 19) is connected to the water supply pipe in the car wash machine main body 1. It is avoided as much as possible that the water in the water supply hose 49 outside the main body 1 flows to the nozzle pipe lines N2 and N3 by the second compressed air, so that the second compressed air is used to pass through the nozzle pipe lines N2 and N3. Since the amount of water to be discharged can be reduced as much as possible, the drainage effect of the water in the nozzle lines N2 and N3 can be further improved while reducing the consumption of compressed air.

次に参考例を、主に図5,6を参照して説明する。 Next, a reference example will be described mainly with reference to FIGS.

この参考例の装置は、エアホース40bの、分岐路42より下流側部分(逆止弁24、第2空気用電磁弁38および減圧弁39を含む部分)が省略されていて、該エアホース40bと分岐管19との間が連通されていない点だけが第1実施例と相違し、その他の部分は第1実施例と同様であるので、対応する構成部材には、第1実施例と同じ参照符号を付している In the apparatus of this reference example, the downstream portion (the portion including the check valve 24, the second air solenoid valve 38 and the pressure reducing valve 39) of the air hose 40b from the branch path 42 is omitted, and the air hose 40b branches off from the air hose 40b. Only the point that the pipe 19 is not communicated is different from the first embodiment, and the other parts are the same as those of the first embodiment. Therefore, the corresponding components are the same as those of the first embodiment. Is attached .

次に、参考例の作用を説明する
参考例の作用は、第1実施例の作用における(ト)〜(カ)が下記(トa)〜(カa)に替わる。
Next, the operation of the reference example will be described.
In the operation of the reference example, (G) to (F) in the operation of the first embodiment are replaced with the following (G) to (F).

(トa) 前記(へ)における艶出し剤用電磁弁20の開弁開始から所定時間t3経過したら、第1空気用電磁弁52を開弁すると共に艶出し剤用電磁弁20を閉弁する。これにより、第1空気用電磁弁52から供給される第1圧縮空気を給水ホース49及び分岐管19に蓄える。   (To a) When the predetermined time t3 has elapsed since the start of the opening of the polishing agent solenoid valve 20 in (f), the first air solenoid valve 52 is opened and the polishing agent solenoid valve 20 is closed. . Accordingly, the first compressed air supplied from the first air solenoid valve 52 is stored in the water supply hose 49 and the branch pipe 19.

(チa) 前記(トa)における第1空気用電磁弁52の開弁開始から所定時間t4(本参考例では約3秒)経過したら、第1空気用電磁弁52を閉弁すると共に洗剤用電磁弁21を開弁する。この場合、前記所定時間t4は、リリーフ弁54,55が開弁しない出来る限り高い圧力(本参考例では約0.5MPa)まで給水ホース49及び分岐管19内の空気圧が上昇するのに要する時間に設定される。これにより、前記(トa)において蓄えた圧縮空気で、洗剤用電磁弁21、洗剤送液管31及び洗剤噴射管14内の水をノズル13から排出する。このとき、第1実施例の(チ)と同様の作用効果を奏する。 (H) When the predetermined time t4 (about 3 seconds in this reference example) has elapsed since the start of the opening of the first air solenoid valve 52 in (a) above, the first air solenoid valve 52 is closed and the detergent. The electromagnetic valve 21 is opened. In this case, the predetermined time t4 is the time required for the air pressure in the water supply hose 49 and the branch pipe 19 to rise to as high a pressure as possible (approximately 0.5 MPa in this reference example) so that the relief valves 54 and 55 do not open. Set to Thus, the water in the detergent solenoid valve 21, the detergent feeding pipe 31, and the detergent jet pipe 14 is discharged from the nozzle 13 with the compressed air stored in (a). At this time, the same effects as (H) of the first embodiment are obtained.

(リa) 前記(チa)における洗剤用電磁弁21の開弁開始から所定時間t3経過したら、第1空気用電磁弁52を開弁すると共に洗剤用電磁弁21を閉弁する。これにより、第1空気用電磁弁52から供給される第1圧縮空気を給水ホース49及び分岐管19に蓄える。   (Li a) When the predetermined time t3 has elapsed since the start of opening of the detergent solenoid valve 21 in (a), the first air solenoid valve 52 is opened and the detergent solenoid valve 21 is closed. Accordingly, the first compressed air supplied from the first air solenoid valve 52 is stored in the water supply hose 49 and the branch pipe 19.

(ヌa) 前記(リa)における第1空気用電磁弁52の開弁開始から所定時間t4経過したら、第1空気用電磁弁52を閉弁すると共に濯ぎ水用電磁弁22を開弁する。これにより、前記(リa)において蓄えた圧縮空気で、濯ぎ水用電磁弁22、濯ぎ水送液管37および濯ぎ水噴射管16内の水をノズル15から排出する。このとき、第1実施例の(ヌ)と同様の作用効果を奏する。   (Nu) When the predetermined time t4 has elapsed since the start of the opening of the first air solenoid valve 52 in (Li), the first air solenoid valve 52 is closed and the rinsing water solenoid valve 22 is opened. . Thus, the water in the rinsing water solenoid valve 22, the rinsing water feed pipe 37 and the rinsing water injection pipe 16 is discharged from the nozzle 15 by the compressed air stored in (Li). At this time, the same effect as (nu) of the first embodiment is obtained.

(ルa) 前記(ヌa)における濯ぎ水用電磁弁22の開弁開始から所定時間t3経過したら、第1空気用電磁弁52を開弁すると共に濯ぎ水用電磁弁22を閉弁する。これにより、第1空気用電磁弁52から供給される第1圧縮空気を給水ホース49及び分岐管19に蓄える。   (L) When the predetermined time t3 has elapsed since the start of opening of the rinsing water solenoid valve 22 in (nu), the first air solenoid valve 52 is opened and the rinsing water solenoid valve 22 is closed. Accordingly, the first compressed air supplied from the first air solenoid valve 52 is stored in the water supply hose 49 and the branch pipe 19.

(オa)前記(ルa)における第1空気用電磁弁52の開弁開始から所定時間t4経過したら、排水用電磁弁23を開弁すると共に第1空気用電磁弁52を閉弁する。これにより、前記(ルa)において蓄えた圧縮空気で、分岐管19内の水を排水用電磁弁23から排出する。   (E) When the predetermined time t4 has elapsed from the start of opening of the first air solenoid valve 52 in (a), the drainage solenoid valve 23 is opened and the first air solenoid valve 52 is closed. Thereby, the water in the branch pipe 19 is discharged from the electromagnetic valve 23 for drainage with the compressed air stored in (L).

(ワa) 前記(オa)における排水用電磁弁23の開弁開始から所定時間t3経過したら、排水用電磁弁23を閉弁すると共に第1空気用電磁弁52を開弁する。   (Wa) When a predetermined time t3 has elapsed from the start of opening of the drainage electromagnetic valve 23 in (Oa), the drainage solenoid valve 23 is closed and the first air solenoid valve 52 is opened.

(カa) そして、前記(へ)から(ワa)を所定回数繰り返し、所定回数繰り返したら最後の(ワa)では第1空気用電磁弁52を開弁せず、水抜き動作を終了する。この(カa)において、前記(へ)中に「前記(ホ)」とあるのは「前記(ワa)」と読み替えるものとする。   (A) Then, (wa) to (wa) are repeated a predetermined number of times, and when the predetermined number of times is repeated, the first air solenoid valve 52 is not opened in the last (wa), and the draining operation is terminated. . In (a), “(e)” in the (f) shall be read as “(a)”.

而して前記した第1回目の(ホ)〜(ルa)、各回の(ワa)〜その次の回の(ルa)の工程は、請求項3の発明の特徴部分に対応するものであり、即ち、凍結防止のためにノズル管路N1〜N3内の水を排出するに当たり、給水管路(給水ホース49、分岐管19)内に予め蓄えた第1圧縮空気により水用開閉弁(艶出し剤用電磁弁20、洗剤用電磁弁21、濯ぎ水用電磁弁22)の前後に十分大きな圧力差を生じさせた状態で、該水用開閉弁20〜22を開弁させるようにしているため、従来技術のように水用開閉弁及び空気用開閉弁を同時に開弁して圧縮空気をノズル管路内に導入するようなものと比べて、圧縮空気が高速でノズル管路N1〜N3内を流れるようにできて、水用開閉弁20〜22内及びノズル管路N1〜N3内の残留水をノズルから効率よく迅速に排出させることができ、これにより、水抜きに用いる圧縮空気量を低減できてエネルギーコストの節減できる。   Thus, the first step (e) to (le a), each step (wa a) to the next step (le a) correspond to the characteristic part of the invention of claim 3. That is, when discharging the water in the nozzle lines N1 to N3 to prevent freezing, the water on-off valve is provided by the first compressed air stored in advance in the water supply line (water supply hose 49, branch pipe 19). The water on / off valves 20 to 22 are opened in a state where a sufficiently large pressure difference is generated before and after the solenoid valve 20 for the polishing agent, the solenoid valve 21 for the detergent, and the solenoid valve 22 for the rinsing water. Therefore, as compared with the conventional technique in which the water on-off valve and the air on-off valve are simultaneously opened to introduce the compressed air into the nozzle pipe, the compressed air is at a high speed. It can be made to flow through N3, and remains in the water on-off valves 20 to 22 and the nozzle lines N1 to N3. The can be efficiently and quickly discharged from the nozzle, which allows savings in energy costs can be reduced amount of compressed air used for drainage.

また特に本参考例によれば、複数の水用開閉弁(艶出し剤用電磁弁20、洗剤用電磁弁21、濯ぎ水用電磁弁22)を全て閉弁した状態で第1空気用電磁弁52を開弁して圧縮空気を給水管路(給水ホース49、分岐管19)に蓄え、該電磁弁52の開弁開始から所定時間t4が経過したら少なくとも1つの水用開閉弁20〜22を開弁して、その開弁した水用開閉弁に対応するノズル管路N1〜N3内の水を給水管路に蓄えられている圧縮空気によりノズルから排出するようにした所定の水抜き動作を行なうようにし、この水抜き動作をノズル管路N1〜N3ごとに順次に実行するので、第1実施例のように第1及び第2圧縮空気を併用し(即ち第2空気管路A2を特別に用い)たり、或いは後述する第実施例のように圧力検出スイッチ60を用いたりして給水管路内に蓄えるべき所定圧力の圧縮空気を得るものと比べて、より簡単な構造で各水用開閉弁20〜22内及び各ノズル管路N1〜N3内の水の排水効果を向上させることができ、従って、ノズル管路N1〜N3が複数系統有っても、それらからの排水を効率よく的確に行うことができる。 Further, in particular, according to the present reference example, the first air solenoid valve is closed with all of the plurality of water on-off valves (polishing agent solenoid valve 20, detergent solenoid valve 21, rinse water solenoid valve 22) closed. 52 is opened to store compressed air in the water supply pipe (water supply hose 49, branch pipe 19), and when a predetermined time t4 elapses from the start of opening of the electromagnetic valve 52, at least one water on-off valve 20 to 22 is opened. A predetermined water draining operation is performed such that the water in the nozzle pipes N1 to N3 corresponding to the opened water on-off valve is discharged from the nozzle by the compressed air stored in the water supply pipe. Since the water draining operation is sequentially executed for each of the nozzle lines N1 to N3, the first and second compressed air are used together as in the first embodiment (that is, the second air line A2 is specially used). used) or the, or pressure detection switch as in the second embodiment described later The water in each of the water on-off valves 20-22 and each of the nozzle pipes N1-N3 has a simpler structure than that used to obtain compressed air having a predetermined pressure to be stored in the water supply pipe by using 0. Therefore, even if there are a plurality of nozzle lines N1 to N3, drainage from them can be efficiently and accurately performed.

次に第実施例を、図7,図8を主に用いて説明する。 Next, a second embodiment will be described mainly with reference to FIGS.

実施例の装置は、分岐管19内の圧力を検出する圧力検出スイッチ60を分岐管19に設けた点だけが前記参考例と相違し、その他の部分は参考例と同様であるので、対応する構成部材には、参考例と同じ参照符号を付している。そして、本実施例では、第1空気管路A1が本発明の空気管路を、また第1空気用電磁弁52が本発明の空気用開閉弁を、圧力検出スイッチ60が本発明の圧力検出手段をそれぞれ構成する。 The apparatus of the second embodiment is different from the reference example only in that the pressure detection switch 60 for detecting the pressure in the branch pipe 19 is provided in the branch pipe 19, and the other parts are the same as the reference example. Corresponding components are given the same reference numerals as in the reference example. In this embodiment, the first air line A1 is the air line of the present invention, the first air solenoid valve 52 is the air on-off valve of the present invention, and the pressure detection switch 60 is the pressure detection of the present invention. Each means is configured.

次に、第実施例の作用を説明する
実施例の作用は、参考例の作用における(トa)〜(カa)が下記(トb)〜(カb)に替わる。
Next, operation of the second embodiment for explaining an operation of the second embodiment, the effect of the reference example (g a) ~ (mosquito a) is replaced by the following (g b) ~ (mosquito b).

(トb) 前記(へ)における艶出し剤用電磁弁20の開弁開始から所定時間t3経過したら、第1空気用電磁弁52を開弁すると共に艶出し剤用電磁弁20を閉弁する。これにより、第1空気用電磁弁52から供給される第1圧縮空気を給水ホース49及び分岐管19に蓄える。   (G) When the predetermined time t3 has elapsed since the start of the opening of the polishing agent solenoid valve 20 in (f) above, the first air solenoid valve 52 is opened and the polishing agent solenoid valve 20 is closed. . Accordingly, the first compressed air supplied from the first air solenoid valve 52 is stored in the water supply hose 49 and the branch pipe 19.

(チb) 前記(トb)で第1空気用電磁弁52を開弁した後、圧力検出スイッチ60が所定圧力P(本実施例では約0.5MPa )以上を検出すると、第1空気用電磁弁52を閉弁すると共に洗剤用電磁弁21を開弁する。これにより、前記(トb)において蓄えた圧縮空気で、洗剤用電磁弁21、洗剤送液管31および洗剤噴射管14内の水をノズル13から排出する。このとき、第1実施例の(チ)と同様の作用効果を奏する。   (Hb) After the first air solenoid valve 52 is opened in (b) above, when the pressure detection switch 60 detects a predetermined pressure P (about 0.5 MPa in this embodiment) or more, The solenoid valve 52 is closed and the detergent solenoid valve 21 is opened. Thus, the water in the detergent solenoid valve 21, the detergent feeding pipe 31, and the detergent jet pipe 14 is discharged from the nozzle 13 with the compressed air stored in (b). At this time, the same effects as (H) of the first embodiment are obtained.

(リb) 前記(チb)における洗剤用電磁弁21の開弁開始から所定時間t3経過したら、第1空気用電磁弁52を開弁すると共に洗剤用電磁弁21を閉弁する。これにより、第1空気用電磁弁52から供給される第1圧縮空気を給水ホース49及び分岐管19に蓄える。なお、圧力検出スイッチ60は、前記(チb)における洗剤用電磁弁21の開弁開始から所定時間t3経過する前に所定圧力P未満を検出する。   (Li b) When the predetermined time t3 has elapsed since the opening of the detergent solenoid valve 21 in (b), the first solenoid valve 52 is opened and the detergent solenoid valve 21 is closed. Accordingly, the first compressed air supplied from the first air solenoid valve 52 is stored in the water supply hose 49 and the branch pipe 19. The pressure detection switch 60 detects a pressure less than the predetermined pressure P before the predetermined time t3 has elapsed since the opening of the detergent solenoid valve 21 in (b).

(ヌb) 前記(リb)で第1空気用電磁弁52を開弁した後、圧力検出スイッチ60が所定圧力P以上を検出すると、第1空気用電磁弁52を閉弁すると共に濯ぎ水用電磁弁22を開弁する。これにより、前記(リb)において蓄えた圧縮空気で、濯ぎ水用電磁弁22、濯ぎ水送液管37および濯ぎ水噴射管16内の水をノズル15から排出する。このとき、第1実施例の(ヌ)と同様の作用効果を奏する。   (Nu b) After the first air solenoid valve 52 is opened in (Li b), when the pressure detection switch 60 detects a predetermined pressure P or more, the first air solenoid valve 52 is closed and the rinsing water is used. The electromagnetic valve 22 is opened. Thus, the water in the rinsing water solenoid valve 22, the rinsing water feed pipe 37 and the rinsing water injection pipe 16 is discharged from the nozzle 15 with the compressed air stored in (b). At this time, the same effect as (nu) of the first embodiment is obtained.

(ルb) 前記(ヌb)における濯ぎ水用電磁弁22の開弁開始から所定時間t3経過したら、第1空気用電磁弁52を開弁すると共に濯ぎ水用電磁弁22を閉弁する。これにより、第1空気用電磁弁52から供給される第1圧縮空気を給水ホース49及び分岐管19に蓄える。なお、圧力検出スイッチ60は、前記(ヌb)における排水用電磁弁23の開弁開始から所定時間t3経過する前に所定圧力P未満を検出する。   (Le b) When the predetermined time t3 has elapsed since the start of opening of the rinsing water electromagnetic valve 22 in (nu) b, the first air electromagnetic valve 52 is opened and the rinsing water electromagnetic valve 22 is closed. Accordingly, the first compressed air supplied from the first air solenoid valve 52 is stored in the water supply hose 49 and the branch pipe 19. The pressure detection switch 60 detects a pressure less than the predetermined pressure P before a predetermined time t3 has elapsed from the start of the opening of the drainage electromagnetic valve 23 in (b).

(オb) 前記(ルb)で第1空気用電磁弁52を開弁した後、圧力検出スイッチ60が所定圧力P以上を検出すると、第1空気用電磁弁52を閉弁すると共に排水用電磁弁23を開弁する。これにより、前記(ルb)において蓄えた圧縮空気で、分岐管19内の水を排水用電磁弁23から排出する。   (B) After the first air solenoid valve 52 is opened in (b), when the pressure detection switch 60 detects a predetermined pressure P or more, the first air solenoid valve 52 is closed and drainage is performed. The electromagnetic valve 23 is opened. Thereby, the water in the branch pipe 19 is discharged from the electromagnetic valve 23 for drainage with the compressed air stored in (b).

(ワb) 前記(オb)における排水用電磁弁23の開弁開始から所定時間t3経過したら、排水用電磁弁23を閉弁すると共に第1空気用電磁弁52を開弁する。なお、圧力検出スイッチ60は、前記(オb)における排水用電磁弁23の開弁開始から所定時間t3経過する前に所定圧力P未満を検出する。   (Wb) When a predetermined time t3 has elapsed since the start of opening of the drainage electromagnetic valve 23 in (Ob), the drainage solenoid valve 23 is closed and the first air solenoid valve 52 is opened. The pressure detection switch 60 detects a pressure less than a predetermined pressure P before a predetermined time t3 has elapsed from the start of opening of the drainage electromagnetic valve 23 in (b).

(カb) そして、前記(へ)から(ワb)を所定回数繰り返し、所定回数繰り返したら最後の(ワb)では第1空気用電磁弁52を開弁せず、水抜き動作を終了する。   (F) Then, (W) to (W) are repeated a predetermined number of times, and when the predetermined number of times are repeated, the first air solenoid valve 52 is not opened in the last (W), and the draining operation is terminated. .

この(カb)において、前記(ヘ)中に「前記(ホ)」とあるのは、「前記(ワb)」と読み替えるものとする。   In (b), “(e)” in (f) shall be read as “(b)”.

而して、前記(トb)〜(ルb)の工程は、請求項4の発明の特徴部分に対応するものであり、即ち、凍結防止のためにノズル管路N2,N3内の水を排出するに当たり、給水管路(給水ホース49、分岐管19)内に予め蓄えた第1圧縮空気により水用開閉弁(洗剤用電磁弁21、濯ぎ水用電磁弁22)の前後に十分大きな圧力差を生じさせた状態で、該水用開閉弁21,22を開弁させるようにしているため、従来技術のように水用開閉弁及び空気用開閉弁を同時に開弁して圧縮空気をノズル管路内に導入するようなものと比べて、圧縮空気が高速でノズル管路N2,N3内を流れるようにできて、水用開閉弁21,22内及びノズル管路N2,N3内の残留水をノズルから効率よく迅速に排出させることができ、これにより、水抜きに用いる圧縮空気量を低減できてエネルギーコストの節減できる。   Thus, the steps (b) to (b) correspond to the characterizing portion of the invention of claim 4, that is, the water in the nozzle lines N2 and N3 is used to prevent freezing. When discharging, a sufficiently large pressure before and after the on-off valve for water (electromagnetic valve 21 for detergent, electromagnetic valve 22 for rinsing water) by the first compressed air stored in advance in the water supply pipe (water supply hose 49, branch pipe 19) Since the water on-off valves 21 and 22 are opened in a state where a difference is generated, the water on-off valve and the air on-off valve are simultaneously opened as in the prior art, and the compressed air is nozzleed. The compressed air can flow through the nozzle pipes N2 and N3 at a higher speed than those introduced into the pipes, and the residual in the water on-off valves 21 and 22 and the nozzle pipes N2 and N3. The water can be efficiently and quickly discharged from the nozzle, thereby draining water. Possible savings in energy costs can be reduced compressed air quantity are.

また特に本第実施例によれば、水用開閉弁(艶出し剤用電磁弁20、洗剤用電磁弁21、濯ぎ水用電磁弁22)を閉弁した状態で第1空気用電磁弁52を開弁して圧縮空気を給水管路(給水ホース49、分岐管19)に蓄える途中で、圧力検出スイッチ60が所定圧力P以上を検出すると、水用開閉弁21、22を開弁して、給水管路に蓄えられている圧縮空気によるノズル管路N2、N3内排水が開始されるので、給水管路内における圧縮空気の実際の蓄圧状態に基づいてノズル管路N2、N3内の排水開始時期(水用開閉弁の開弁時期)を決めることができ、従って、給水管路49,19に供給する圧縮空気の圧力が低下しても所定圧力で水用開閉弁21,22を開弁できるから、給水管路に供給する圧縮空気の圧力の低下による排水効果の低下を防止できる。 In particular, according to the second embodiment, the first air solenoid valve 52 is closed with the water on-off valve (the polishing agent solenoid valve 20, the detergent solenoid valve 21, and the rinsing water solenoid valve 22) closed. When the pressure detection switch 60 detects a predetermined pressure P or higher while storing compressed air in the water supply pipe (water supply hose 49, branch pipe 19), the water on-off valves 21 and 22 are opened. Since the drainage in the nozzle pipes N2 and N3 by the compressed air stored in the water supply pipe is started, the drainage in the nozzle pipes N2 and N3 based on the actual pressure accumulation state of the compressed air in the water supply pipe The start time (the opening timing of the water on / off valve) can be determined, and therefore the water on / off valves 21 and 22 are opened at a predetermined pressure even when the pressure of the compressed air supplied to the water supply pipes 49 and 19 decreases. Since it can be valved, drainage due to a drop in the pressure of compressed air supplied to the water supply pipeline A decrease in the results can be prevented.

以上、本発明による洗車機における車両上面洗車用ブラシ装置の実施例を詳説したが、本発明は前記実施例に限定されるものではなく、特許請求の範囲に記載された本発明を逸脱することなく、種々の小設計変更を行うことが可能である。   As mentioned above, although the Example of the brush apparatus for the vehicle upper surface car wash in the car wash machine by this invention was explained in full detail, this invention is not limited to the said Example, It deviates from this invention described in the claim. It is possible to make various small design changes.

例えば、前記実施例では、所定の水抜き動作を複数系統あるノズル管路N1〜N3ごとに(即ち1系統ずつ)順次に実行するようにしたものを示したが、本発明では、複数系統あるノズル管路N1〜N3を幾つかに区分け(例えばN1・N2の2系統と、N3の1系統に区分け)し、その区分けされた系統ごとに所定の水抜き動作を行うようにしてもよい。   For example, in the above-described embodiment, the predetermined water draining operation is sequentially performed for each of the nozzle lines N1 to N3 having a plurality of systems (that is, one system), but in the present invention, there are a plurality of systems. The nozzle pipes N1 to N3 may be divided into several groups (for example, divided into two systems of N1 and N2 and one system of N3), and a predetermined draining operation may be performed for each of the divided systems.

また前記第1実施例では、給水管路(給水ホース49、分岐管19)に第2圧縮空気を蓄えた後、第1及び第2空気用開閉弁(第1及び第2空気用電磁弁52,38)の何れも閉弁した状態で水用開閉弁(洗剤用電磁弁21、濯ぎ水用電磁弁22)を開弁して、該給水管路に蓄えられている第2圧縮空気によりノズル管路N2,N3内の水を排出するようにしたものを示したが、本発明(請求項1)では、第2空気用電磁弁38を開弁した状態のまま水用開閉弁(電磁弁21,22)を開弁して、対応するノズル管路N2,N3の水抜き動作を実行するようにしてもよい。   In the first embodiment, the second compressed air is stored in the water supply pipe (water supply hose 49, branch pipe 19), and then the first and second air on-off valves (first and second air solenoid valves 52). 38), the water on-off valve (detergent solenoid valve 21 and rinsing water solenoid valve 22) is opened, and the second compressed air stored in the water supply pipe opens the nozzle. In the present invention (Claim 1), the water on / off valve (solenoid valve) is shown with the second air solenoid valve 38 opened. 21 and 22) may be opened to perform the draining operation of the corresponding nozzle lines N2 and N3.

また前記第実施例では、第1空気用電磁弁52の開弁開始後、給水管路(給水ホース49、分岐管19)内が所定圧力P以上になった時に、第1空気用電磁弁52を閉弁すると同時に1つの水用開閉弁(電磁弁21,22)を開弁して、対応するノズル管路N2,N3の水抜き動作を実行するようにしたものを示したが、本発明(請求項)では、第1空気用電磁弁52を開弁状態のまま水用開閉弁(磁弁21,22)を開弁して、対応するノズル管路(2,N3)の水抜き動作を実行するようにしてもよい。 In the second embodiment, after the opening of the first air solenoid valve 52, when the pressure in the water supply line (water supply hose 49, branch pipe 19) becomes equal to or higher than the predetermined pressure P, the first air solenoid valve is opened. Although the valve 52 is closed and at the same time one water on-off valve ( solenoid valve 21, 22) is opened , the water draining operation of the corresponding nozzle lines N2 , N3 is executed. in the present invention (claim 3), and remains water-off valve of the first air solenoid valve 52 opened to (electric solenoid valve 21, 22) opens, a corresponding nozzle line (N 2, N3 ) Water draining operation may be executed.

本発明の第1実施例に係る洗車機の概略全体側面図1 is a schematic overall side view of a car wash machine according to a first embodiment of the present invention; 前記洗車機の配管図Piping diagram of the car wash machine 前記洗車機に用いた混合器の縦断面図Longitudinal sectional view of a mixer used in the car wash machine 水抜き動作時における各弁の作動タイミングの一例を示すタイミングチャートTiming chart showing an example of operation timing of each valve during draining operation 参考例に係る洗車機の配管図を示す図2対応図FIG. 2 correspondence diagram showing a piping diagram of a car wash machine according to a reference example 前記参考例の水抜き動作時における各弁の作動タイミングの一例を示すタイミングチャートTiming chart showing an example of operation timing of each valve at the time of draining operation of the reference example 本発明の第実施例に係る洗車機の配管図を示す図2対応図FIG. 2 is a diagram corresponding to FIG. 2 showing a piping diagram of a car wash machine according to a second embodiment of the present invention. 前記第実施例の水抜き動作時における各弁の作動タイミングの一例を示すタイミングチャートThe timing chart which shows an example of the operation timing of each valve at the time of draining operation of the said 2nd Example

符号の説明Explanation of symbols

A1・・・第1空気管路(空気管路)
A2・・・第2空気管路
N1・・・第1ノズル管路(ノズル管路)
N2・・・第2ノズル管路(ノズル管路)
N3・・・第3ノズル管路(ノズル管路)
t2,t4・・・所定時間
1・・・・洗車機本体
11・・・艶出し剤噴射用ノズル(ノズル)
13・・・洗剤噴射用ノズル(ノズル)
15・・・濯ぎ水噴射用ノズル(ノズル)
19・・・分岐管(給水管路)
20・・・艶出し剤用電磁弁(水用開閉弁)
21・・・洗剤用電磁弁(水用開閉弁)
22・・・濯ぎ水用電磁弁(水用開閉弁)
38・・・第2空気用電磁弁(第2空気用開閉弁)
49・・・給水ホース(給水管路)
52・・・第1空気用電磁弁(第1空気用開閉弁、空気用開閉弁)
54,55・・リリーフ弁
57・・・制御装置(制御手段)
60・・・圧力検出スイッチ(圧力検出手段)
A1 ... 1st air line (air line)
A2 ... second air pipe N1 ... first nozzle pipe (nozzle pipe)
N2 ... Second nozzle line (nozzle line)
N3 ... Third nozzle line (nozzle line)
t2, t4 ... Predetermined time 1 ... Car wash body 11 ... Polishing agent injection nozzle (nozzle)
13 ... Nozzle for detergent injection
15 ... Nozzle for rinsing water injection (nozzle)
19 ... Branch pipe (water supply pipeline)
20 ... Solenoid valve for polish (water open / close valve)
21 ... Solenoid solenoid valve (water on-off valve)
22 ... Rinsing water solenoid valve (water on-off valve)
38 ... Second air solenoid valve (second air on-off valve)
49 ... Water supply hose (water supply pipeline)
52... First air solenoid valve (first air on-off valve, air on-off valve)
54, 55 ... Relief valve 57 ... Control device (control means)
60 ... Pressure detection switch (pressure detection means)

Claims (3)

往復走行可能な洗車機本体と、その洗車機本体へ給水する給水管路と、その給水管路の谷部に設けられ給水圧では開弁しないリリーフ弁と、前記洗車機本体に設けられたノズルと、そのノズルと前記給水管路間を接続するノズル管路と、そのノズル管路を開閉し得る水用開閉弁と、前記リリーフ弁の開弁圧以上の圧力の第1圧縮空気を前記給水管路に供給する第1空気管路と、その第1空気管路を開閉し得る第1空気用開閉弁とを備え、その第1空気用開閉弁から前記給水管路に供給した圧縮空気の圧力で前記リリーフ弁を開弁させて該給水管路内の水を該リリーフ弁から排出可能とした洗車機において、
前記リリーフ弁の前記開弁圧よりも低い圧力の第2圧縮空気を前記給水管路に供給する第2空気管路と、
その第2空気管路を開閉し得る第2空気用開閉弁と、
前記水用開閉弁および前記第1空気用開閉弁の閉弁状態で前記第2空気用開閉弁を開弁して前記第2圧縮空気を前記開弁圧よりも低い圧力の状態で前記給水管路に蓄えた後、前記第1空気用開閉弁の閉弁状態で前記水用開閉弁を開弁して、前記給水管路に蓄えられている前記第2圧縮空気により前記ノズル管路内の水を前記ノズルから排出するように、前記水用開閉弁並びに前記第1及び第2空気用開閉弁を制御する制御手段と
を備えたことを特徴とする洗車機。
A car wash machine main body capable of reciprocating, a water supply pipe for supplying water to the car wash machine main body, a relief valve provided in a trough of the water supply pipe and not opened by water supply pressure, and a nozzle provided in the car wash machine main body A nozzle line connecting the nozzle and the water supply line, a water on-off valve capable of opening and closing the nozzle line, and the first compressed air having a pressure equal to or higher than a valve opening pressure of the relief valve A first air pipe to be supplied to the pipe and a first air on-off valve capable of opening and closing the first air pipe, and the compressed air supplied to the water supply pipe from the first air on-off valve In the car wash machine that allows the water in the water supply pipe to be discharged from the relief valve by opening the relief valve with pressure,
A second air line that supplies second compressed air having a pressure lower than the opening pressure of the relief valve to the water supply line;
A second air on-off valve capable of opening and closing the second air line;
The second air on / off valve is opened when the water on / off valve and the first air on / off valve are closed , and the second compressed air is supplied at a pressure lower than the valve opening pressure. After accumulating in the pipe line, the water on-off valve is opened while the first air on-off valve is closed, and the second compressed air stored in the water supply pipe line opens the nozzle pipe line. A car wash machine comprising: control means for controlling the water on-off valve and the first and second air on-off valves so as to discharge the water from the nozzle.
前記第2空気管路は、前記洗車機本体内で前記給水管路に接続されることを特徴とする、請求項1に記載の洗車機。   2. The car wash machine according to claim 1, wherein the second air pipe is connected to the water supply pipe in the car wash body. 3. 復走行可能な洗車機本体と、その洗車機本体へ給水する給水管路と、その給水管路の谷部に設けられ給水圧では開弁しないリリーフ弁と、前記洗車機本体に設けられたノズルと、そのノズルと前記給水管路間を接続するノズル管路と、そのノズル管路を開閉し得る水用開閉弁と、前記リリーフ弁の開弁圧以上の圧力の圧縮空気を前記給水管路に供給する空気管路と、その空気管路を開閉し得る空気用開閉弁とを備え、その空気用開閉弁から前記給水管路に供給した圧縮空気の圧力で前記リリーフ弁を開弁させて該給水管路内の水を該リリーフ弁から排出可能とした洗車機において、
前記給水管路内の圧力を検出する圧力検出手段と、
前記ノズル管路内の水を前記ノズルから排出する前に、前記圧縮空気を前記給水管路に予め蓄えるべく、前記水用開閉弁を閉弁した状態で前記空気用開閉弁を開弁し、その開弁後、前記圧力検出手段が前記リリーフ弁の前記開弁圧より低い所定圧力を検出すると前記水用開閉弁を開弁して、前記給水管路に蓄えられている前記圧縮空気により前記ノズル管路内の水を前記ノズルから排出するように、前記水用開閉弁および前記空気用開閉弁を制御する制御手段と
を備えたことを特徴とする洗車機。
A round trip travelable car wash machine body, a water supply pipe for supplying water to the wash machine body, a relief valve not open a provided supply water pressure troughs of the water supply conduit, it is provided in the car wash body A nozzle, a nozzle line connecting the nozzle and the water supply line, a water on-off valve capable of opening and closing the nozzle line, and compressed water having a pressure equal to or higher than a valve opening pressure of the relief valve. And an air on-off valve that can open and close the air pipe, and the relief valve is opened by the pressure of compressed air supplied from the air on-off valve to the water supply pipe. In the car wash machine capable of discharging the water in the water supply line from the relief valve,
Pressure detecting means for detecting the pressure in the water supply pipeline;
Before the water in the nozzle pipe is discharged from the nozzle , the air on-off valve is opened with the water on-off valve closed in order to store the compressed air in the water supply pipe in advance . After the valve opening, when the pressure detecting means detects a predetermined pressure lower than the valve opening pressure of the relief valve, the water on-off valve is opened, and the compressed air stored in the water supply pipe is used to A car wash machine comprising: control means for controlling the water on-off valve and the air on-off valve so that water in the nozzle pipe is discharged from the nozzle.
JP2004120789A 2004-04-15 2004-04-15 Car wash machine Expired - Lifetime JP4058016B2 (en)

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JP6256313B2 (en) * 2014-11-18 2018-01-10 株式会社ダイフク Car wash machine and draining method
JP6414020B2 (en) * 2015-11-04 2018-10-31 株式会社ダイフク Car wash machine and drainage control method
JP6477426B2 (en) * 2015-11-04 2019-03-06 株式会社ダイフク Method for draining car wash machine and pump
JP7047551B2 (en) * 2018-04-03 2022-04-05 株式会社ダイフク Car wash machine

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