JPH01226461A - Spray type car washer - Google Patents

Abstract

PURPOSE:To spray chemicals immediately without spraying water by carrying out a preliminary liquid sending process for spraying chemicals so as to sweep away water in a hose before sending chemicals regularly. CONSTITUTION:Water is sprayed for a prescribed time from a high pressure nozzle 3a when a start switch is pushed and thereafter when the start switch is pushed again, wax is sprayed for a prescribed hour from a low pressure nozzle 3b. Here, while an operator stores the high pressure nozzle 3a and comes to a car holding the low pressure nozzle 3b, pumps P2, P3 are operated so as to open electro-magnetic valves EV3, EV4 and the original liquid of wax in a wax tank 22 is mixed with water in a water tank 20 and the mixed liquid of wax and water is sent to the low pressure nozzle 3b. Accordingly, lines L3, L6 reaching to the low pressure nozzle 3b are filed with the mixed liquid and water remaining in the lines is eliminated. Thereby, water can not be delivered in the case of spray of chemicals time can be saved and also dissatisfaction on the part of the customer can be eliminated.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a spray-type car wash machine that sprays chemicals such as wax and water scale remover and then flushes water to wash away the chemicals in the hose.

[Prior Art] As is well known, spray-type car wash machines are used at gas stations and the like to wash dirty automobiles. In order to suitably spray chemicals such as wax liquid, scale forming agent, etc. using such a spray type car wash machine, the present applicant filed an invention in Japanese Patent Application No. 1988-292345.

However, in such conventional technology, if the spray nozzle does not wash the line with water after spraying the chemical, the chemical in the line may become clogged or mix with other chemicals, so the spray nozzle must be cleaned by flushing water after spraying the chemical. are doing. As water accumulates in the line like this,
Water is injected at the beginning of chemical injection, and the chemical does not begin to be ejected until after a certain period of time, for example, 15 seconds. This time delay becomes longer for chemicals with a small injection amount.

This causes a loss in car wash time, and this time delay negatively affects the customer's image. In addition, the customer may think that the water that gushes out at the beginning is chemical, and it is likely that poor quality chemicals are being used. The chemicals then come out, so the customer realizes that the initial spray was water, but ends up doing the unnecessary work of spraying the car with more water than necessary.

[Object of the Invention] Accordingly, an object of the present invention is to provide a spray-type car wash machine that can spray chemicals immediately without spraying water.

[Structure of the Invention] According to the present invention, in a spray type car wash machine in which water is flushed after spraying a chemical to wash away the chemical in the hose, there is provided a spray-type car wash machine in which the water in the hose is washed away before the main feeding of the chemical. A control device is provided for executing the injection quasi-biased liquid stroke.

[Operation and Effect of the Invention] Therefore, before the main feeding of the chemical injection liquid, the control device sends in advance an amount of chemical sufficient to wash away the water in the port. Injected. Therefore, the image will not be degraded to customers.

[Preferred Embodiment] When carrying out the present invention, it is preferable to send only water just before the end of chemical injection. In this way, when the inside of the hose is washed with water after the chemical injection is finished, there is almost no chemical left inside the hose, so no chemical is wasted.

[Example] The present invention will be described in detail below with reference to the drawings.

In Fig. 1, a high-pressure spray nozzle (hereinafter referred to as high-pressure nozzle) 3a and a low-pressure spray nozzle (hereinafter referred to as low-pressure nozzle) 3b are connected to both sides of the car wash machine body via hoses 2a and 2b, respectively. There is. For both of these nozzles, nozzles that are most suitable for each spray are used, and in particular, the low-pressure nozzle is used that has little rebound. In the figure, 4 is a storage tube for the low-pressure nozzle 3b, and 5.5 is a spring cup that supports the hose.

A selection switch 6 is provided on one side of the main body 1, and the selection switch 6 selects a water washing course (water high pressure spray),
Jump course (high-pressure water spray, high-pressure detergent spray, and high-pressure water spray), scale removal course (high-pressure water spray, low-pressure spray of a mixture of scale remover and water, and high-pressure water spray), wax course (mixture of wax and water) There are four car wash courses to choose from: low-pressure spray and high-pressure water spray. Also provided on that surface are a coin selector 7, a rate display 8, a start switch 9 for instructing the start of car washing and for restarting after a temporary stop, and a voice 15 for informing of operation methods, operation guidance, etc. Inside the main body 1, there is a water tank 20 and a detergent tank 2.
1. Wax tank 22, scale remover tank 23, control device 17, pumps P1, P2, P3 (described later), solenoid valves EVl, EV2, EV3, EV4, EV
5, EV6, etc. are stored. Note that the wax tank 22 contains a wax stock solution in which wax is wrapped in a surfactant.

In FIG. 2, the water tank 20 is connected to a solenoid valve EVI and a high pressure pump, for example, 70 kg/-, by a line L1.
(It is connected to the high-pressure nozzle 3a via a plunger pump P1 with a performance of H!/min.

The thin detergent tank 21 is connected to a solenoid valve E by supply line L2.
It is connected to the downstream side of the electromagnetic valve Ev1 of the high pressure line L1 via V2.

The wax tank 22 and scale remover tank 23 are connected to a low pressure nozzle 3b via a line L3 via electromagnetic valves EV4 and EV5, respectively, and a diaphragm pump P2 with a flow rate of 300 cc/n+in, and the liquid is supplied from the low pressure nozzle 3b. For example, the pressure is 2 kg/Q (, flow!
! : It is designed to be sprayed at I Q /n+in.

The upstream side of the electromagnetic valve EV1 of the high pressure line L1 is line L.
4 is connected to the downstream side of the solenoid valve EV6 of the low pressure line L3 via the solenoid valve EV3, and the downstream side of the solenoid valve EV3 of the line L4 has a flow rate of 700 c through the line L5.
Low pressure line L3 via c/nin vane pump P3
The pump P2 is connected to the downstream side of the pump P2.

The pumps P1 to P3 and the solenoid valves E1 to EV6 are all connected to and controlled by a control device 17.

In FIG. 3, a control device 17 controls each pump P1 to P3 and each solenoid valve EV1 to EV based on signals from a selection switch 6, a coin selector 7, and a start switch 9.
A control signal is output to the display device 6, the display device 8, and the voice device 15.

During the work, the worker (in the case of self-service, the same applies to the customer) presses the selection button 6 to select the desired course, looks at the price list, inserts the predetermined amount into the coin selector 7, and the price is displayed on the price display. 8, and this display allows you to see the elapsed work time and the remaining time.

(a) When the flushing start switch 9 is pressed, filtered water is sprayed from the high-pressure nozzle 3a for, for example, 5 minutes.

(b) When the shampoo start switch 9 is pressed, water is first sprayed for, for example, 120 seconds, then, after a rest of, for example, 5 seconds, shampoo is sprayed for, for example, 120 seconds, and then, after a rest of, for example, 5 seconds, water is sprayed for 120 seconds.

(c) When the scale removal start switch 9 is pressed, water is sprayed from the high pressure nozzle 3a for, for example, 120 seconds. Next, when the start switch 9 is pressed again, the water scale removal agent is sprayed from the low pressure nozzle 3b for, for example, 120 seconds, Thereafter, the water scale is removed by hand for about 10 minutes, for example, and then the start switch 9 is pressed to spray water from the high-pressure nozzle 3a for about 120 seconds, for example.

(d) When the wax start switch 9 is pressed, water is sprayed from the high-pressure nozzle for, for example, 120 seconds, and then the start switch 9 is pressed again.
When you press , wax is sprayed from the low-pressure nozzle for 120 seconds, for example, and when this process is finished, rub the wax by hand for about 10 minutes, then press the start switch again and spray water from the high-pressure nozzle for 120 seconds, for example. Inject.

In each of the above-mentioned work courses, in the case of the scale removal course (C) and waxing course (d) using low-pressure nozzles, if the water accumulated in the line is injected from the low-pressure nozzle, the above-mentioned disadvantages occur.

Therefore, examples of courses (c) and (d) will be described below.

The mode of operation of the present invention will be explained with reference to FIGS. 4 to 6.

Figure 4 shows, for example, the first step in the course (C) or (d), which is the operation of injecting water from the high-pressure nozzle 3a. Select, insert a coin into the coin selector,
Next, the start switch 9 is pressed (step S1).

Then, the worker grasps the high-pressure nozzle 3a and goes to the car, so it is necessary to judge whether a certain period of time T1, for example 5 seconds, has elapsed (Step S2), and when that time has elapsed, the solenoid valve EV1 opens. , the pump P1 is driven (step 33). Then, high pressure water flows through high pressure nozzle 3.
The water is sprayed from a, and the water washing process continues for a certain period of time T2. For example 1
When this is carried out for 10 seconds (step S4), the control device 17 executes an injection preparation liquid feeding process for the next work course, ie, water scale remover or wax injection. In other words, in the case of the wax course, pumps P2 and P3 operate, and the solenoid valves EV3 and EV4 (in the case of the scale removal course, the pumps
5) opens (step 35), and the 'wax tank 22
The wax stock solution in the tank 20 is mixed with water in the water tank 20, and the mixed solution of wax and water is sent to the low pressure nozzle 3b. Therefore, the lines L3 and L6 leading to the low pressure nozzle 3b are filled with the mixed liquid, and the water remaining in the lines is removed.

This work is calculated in advance, and in the case of chemicals, since the amount is relatively small, it takes, for example, 15 seconds from step S5.

When time T3, for example, 120 seconds has elapsed since step S3 (step S6), pump P1 stops and solenoid valve E
Since V1 is closed (step S7), the water injection ends.

The worker then stores the high pressure nozzle 3a. After a while, when time 'r4 has passed since step S5 (step S8), pumps P2 and P3 stop, and solenoid valves EV3 and E
V4 (or EV5) is closed (step S9). Next, the low-pressure nozzle 3b is brought to the car, and during this time the line of the low-pressure nozzle 3b is replaced with a chemical.

Then, as shown in FIG. 5, when the worker presses the start switch 9 again (step 510), the pump P2
, P3 are driven, solenoid valves EV3, EV4 (or E
V5) is open (step 512).

This time T5 (step 511) is the time required for work 0 to bring the low pressure nozzle 3b to the car. By operating the pumps P2 and P3, a chemical, that is, a mixed liquid of wax and water, is injected from the low-pressure nozzle 3b, but since the mixed liquid has been sent to the low-pressure nozzle 3b in step s5, the worker can immediately start waxing. can do.

Then, when a certain period of time T6, for example 110 seconds has elapsed (step 5T3), solenoid valve EV6 opens and solenoid valve EV4
(or EV5) is closed (step 514).

Therefore, only water is sent from step S14. Then, from step S12, a certain period of time T7
For example, after 120 seconds have passed (step 515), pumps P2 and P3 are stopped and solenoid valve EV3 is closed (step 516). Therefore, the chemical injection (waxing) ends.

Therefore, the worker stores the low-pressure nozzle 3b and manually washes the car by rubbing the car body with a rag, but in the meantime, in order to wash the low-pressure nozzle system line and pump with water, the control device 17 starts from step S16. Fixed time 1゛8
For example, step 511 determines whether 20 seconds have elapsed.
), after the elapse of time T8, in order to flush the low pressure line and the pump, start pumps P2 and P3, and turn on the solenoid valve E.
V3 and EV6 are opened (step 818). Then, water flows into the low pressure lines L3, L5, L6 and P2, P3, so that the pump and lines are washed with water.

This washing operation is carried out for a certain period of time T9, for example 20 seconds (
Step 519), after the elapse of time '9, pump P2
, P3 are stopped, and solenoid valves E■3 and E■6 are closed (step 520), and the work is completed.

After completing the manual car wash, the worker presses the start switch 9 as shown in Figure 6 (step 521) in order to wash away the remaining chemicals, and then returns to the car with the high pressure nozzle 3a. Therefore, after a certain period of time T10, for example 5 seconds, (step 522)
, the pump P1 is driven and the solenoid valve Ev1 is opened (step 523). High-pressure water is then sprayed from a high-pressure nozzle to wash away any remaining chemicals. This work takes a certain amount of time
11, for example, for 120 seconds (step 524);
After the time 'r11 has elapsed, the pump P1 is stopped, the electromagnetic valve EVI is closed (step 525), and the work is completed.

The work opening accommodates the high pressure nozzle 3a.

Figure 7 shows pumps P1, P2, and P3 in the above work.
and solenoid valves EV1, EV3, EV4 (or EV
5) is a diagram showing the mode of operation of EV6.

First, the start switch 9 is pressed at time t1.

Then, the voice generator 15 issues an instruction to "please take the high-pressure nozzle." And time t2 (tl to T1
(after), the pump P1 and the electromagnetic valve EV1 are turned on, and water is injected from the high-pressure nozzle. This work is done at time t
4 (from tl to after T3), and the pump P1 and solenoid valve EVI are turned off, but at time t3 a little earlier
(After T2 from tl), pumps P2 and P3 and solenoid valves EV3 and EV4 (or EV5) are turned on to eliminate water in the line leading to the low pressure nozzle. This elimination work is performed from time 5 (after t3 to T4). This time t
The operation from time 1 to time t5 is as shown in FIG.

When the water injection from the high pressure nozzle has finished, press the start switch 9 at time 0, and the instruction "Please take the low pressure nozzle" will be issued from the voice generator. And time t7 (
(after t6 to T5), pumps P2, P3 and solenoid valve E
V3 and EV4 (EV5) are turned on, and chemicals are injected from the low pressure nozzle. This chemical injection work is carried out until time t9 (from t7 to after T7), and a little earlier, at time t8 (from t7 to after T6), the solenoid valve EV4
(or EV5) is turned off, solenoid valve EV6 is turned on, and only water is delivered between times t8 and t9, during which time the chemical in the low pressure line is injected from the low pressure nozzle. And at time 〇, solenoid valves EV3 and EV6
And pumps Pi and P2 are turned off.

Next, at time t10, please use the voice box to perform the r manual operation.''
instructions are given and manual work is carried out until time t13,
Meanwhile, at time t11 (1゛8 after t9), pump P2
,P,? Then, the solenoid valves EV3 and EV6 are turned on, and the low pressure line and pumps P2 + P3 are washed with water. The washing work starts at time t12 (from s11 to 'r9).
after), pumps P2, P3, solenoid valve EV3,
EV6 is turned off. The operation from time t1 to time t12 is as shown in FIG.

If you do not press the start switch at time L13 after completing manual work,
The instruction to "please close the high-pressure nozzle" is issued from the voice generator, and at time t14 (after TIO from t13), pump P1 and electromagnetic valve EVI are turned on, and water is injected by the high-pressure nozzle, and at time t15 (t 14 to 1
After (11), the pump P1 and the solenoid valve EV1 are turned off, and the work is completed. From this time t13 to time t 15t
, the operation is as shown in FIG.

[Summary] As described above, according to the present invention, water in the line leading to the nozzle is replaced with chemical before chemical injection, so no water comes out during chemical injection, which saves time and does not damage the customer's image. , it is extremely suitable as a spray type car wash machine.

[Brief explanation of the drawing]

Fig. 1 is an external view showing an example of a spray-type car wash machine of the present invention, Fig. 2 is a circuit diagram, Fig. 3 is a control block diagram, Fig. 4 is a flowchart showing the flow of initial water injection, and Fig. 5 The figure is a flowchart showing the flow of chemical injection, Figure 6 is a flowchart showing the flow of the final water injection,
FIG. 7 is a diagram showing the operation of the pump and the solenoid valve. EVI or EV6...Solenoid valve Ll or L6
...Line Pl or P3...Pump 1
...Car wash machine body 2a...High pressure hose 2b.
...Low pressure hose 3a...High pressure nozzle 3b...
-Low pressure nozzle 6...Selection switch 7...Coin selector 8...Charge display 9...Start switch 15...Voice generator 17...Control device 20...Water tank 21... Light detergent tank 2
2... Wax tank 23... Scale absorbent tank Figure 4

Claims (1)

[Claims] In a spray-type car wash machine that flushes water after spraying chemicals to wash away the chemicals in the hoses, a control device is provided that executes a chemical injection preparation liquid feeding process that flushes out the water in the hoses before the main chemical injection liquid feeding. A spray-type car wash machine that is characterized by the following: