JPH0343104B2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a spray car wash machine.

[Prior art] In the spray-type car wash machines currently in use, water and detergent are sprayed at high pressure (e.g.
65Kg/ ^cm2 ) to physically remove dirt from the car body,
Chemicals such as wax and water scale remover are sprayed at high pressure in the same way as above to make the surface shiny and remove dirt.

By the way, since the chemicals such as the waxes and water scale removers mentioned above mainly act chemically, it is sufficient to spray them at a low pressure (e.g., injection pressure 2 kg/cm ² ) to wet the entire car body; As a result, the spray liquid splashes back onto the ground, making it difficult to wash the car, wasting resources, and increasing running costs.

In order to solve this problem, the applicant filed a patent application in 1983.
-263864 (Japanese Unexamined Patent Publication No. 62-125888), a jetting pressure adjusting means is provided, and water and light detergent are sprayed at high pressure by the jetting pressure adjusting means for effective physical cleaning, and wax and water scale remover are sprayed at high pressure. Chemicals such as these are injected at low pressure using the injection pressure adjustment means to effectively perform chemical cleaning and prevent splashing from the car body.As a result, the car wash operation becomes easier, and running costs are reduced by eliminating wasted resources. We offer spray-type car wash machines that can reduce

This proposal is effective, but if the chemical builds up on the inner surface of the hose or nozzle, the opening will become clogged with the chemical, especially since the opening of the nozzle is small. Furthermore, when one hose or nozzle is used to spray multiple chemicals, the accumulated chemicals may mix together during the initial stage of use, causing chemical changes depending on the type of use, which may have an adverse effect on the vehicle body, hose, or nozzle.

For example, Japanese Utility Model Application Publication No. 60-125263 discloses a technique for injecting chemicals and high-pressure water with a single nozzle. However, in this known technique, the pressure is inevitably high during chemical injection, and as a result, a large amount of chemical is injected, resulting in a lot of waste. In addition, as a car wash course, hot water is injected after chemical injection, so the remaining chemicals in the hoses and nozzles are washed away, but if for some reason the work is interrupted for a long time after chemical injection, the above-mentioned inconvenience will occur. .

Furthermore, Japanese Utility Model Application No. 61-176056 discloses a technique for cleaning a detergent spray nozzle by connecting the cleaning nozzle to clean water. However, such known techniques cannot clean the insides of chemical hoses and nozzles.

[Problems to be Solved] Therefore, an object of the present invention is to provide a spray-type car wash machine that does not allow chemicals to accumulate inside hoses or nozzles and does not waste chemicals.

[Means for Solving the Problem] According to the spray type car wash machine of the present invention, it has a low pressure nozzle that sprays chemicals such as water scale remover and wax, and a high pressure nozzle that sprays high pressure water,
It is equipped with a flushing means for sending low-pressure water to a low-pressure nozzle for a predetermined period of time to flush away residual chemicals after chemical spraying is finished, and a low-pressure nozzle storage cylinder that stores the low-pressure nozzle, and the low-pressure nozzle storage cylinder communicates with the drainage means. .

[Description of the effects of the invention] Therefore, since chemicals such as water scale removers and waxes are sprayed onto the car body at low pressure, the chemicals can be applied to the entire car body without waste.
The water scale remover, dirt, and debris applied to the car body can then be removed by spraying water from a high-pressure nozzle.

After chemical spraying, water is sent out by the flushing means to wash away residual chemicals from the hose and nozzle, thereby preventing the chemical from accumulating on the hose and nozzle, and in particular preventing the nozzle opening from being clogged with the chemical. It also prevents multiple residual chemicals from mixing and causing chemical changes that would adversely affect the vehicle body, hoses, and nozzles.

After the chemical spraying operation is completed, the low pressure nozzle is stored in the low pressure nozzle housing cylinder, so that the cleaning liquid from the low pressure nozzle by the flushing means is drained to the drainage means and does not contaminate the car wash machine.

[Preferred embodiment] When implementing the present invention, a control device is provided, and the control function of the device includes a water washing course (water high pressure spray),
shampoo course (water high-pressure spray, thin detergent high-pressure spray, and water high-pressure spray), water scale removal course (water high-pressure spray, water scale remover and water mixture low-pressure spray, and water high-pressure spray), wax course (wax and water mixture low-pressure spray,
It is preferable to provide a high-pressure water spray.

[Examples] Examples of the present invention will be described below with reference to the drawings.

In Fig. 1, a high-pressure spray nozzle (hereinafter referred to as a high-pressure nozzle) 3a and a low-pressure spray nozzle (hereinafter referred to as a low-pressure nozzle) 3b are connected to both sides of a car wash machine main body 1 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, numeral 4 is a storage tube for the low pressure nozzle 3b, and numerals 5 and 5 are spring rods that support the hose. In FIGS. 2 and 3, the storage tube 4 is L
It is formed into a letter-shaped cylinder, and the upper end is attached to the car wash main body 1 with a mounting bracket 4a, and the lower end is equipped with a drain pipe 4b.
are connected, and the drain pipe 4b is connected to a drain means (not shown).

A selection switch 6 is provided on one side of the main body 1, and the selection switch 6 selects a washing course (water high-pressure spray), a shampoo course (water high-pressure spray,
Dilute detergent high-pressure spray and water high-pressure spray), water scale removal course (water high-pressure spray, water scale remover and water mixture low-pressure spray and water high-pressure spray), wax course (wax and water mixture low-pressure spray, water high-pressure spray) There are four car wash courses to choose from. Also on that side is a coin selector 7, a charge display 8, a start button 9 for instructing the start of car washing and restarting after a temporary stop.
Pause button 10, water supply button 1 for instructing water spray
1, Nozzle in use indicator 12, Working indicator 13,
A remaining time display 14 and a voice 15 for informing operation methods, operation guidance, etc. are provided. Inside the main body 1, there is a water tank 20 and a detergent tank 2.
1. Wax tank 22, water scale remover tank 2
3, a detergent tank 24, a control device 17, each pump, each electromagnetic valve, etc. to be described later are housed.

In FIG. 4, the water tank 20 is connected to the high-pressure nozzle 3a by a high-pressure line L1 via a solenoid valve EV1 and a high-pressure pump, for example, a plunger pump P1 having a performance of 70 kg/cm ² and 10 min.

The thin detergent tank 21 is connected to the high pressure line L1 through the solenoid valve EV2 via the subline L2.
It is connected to the downstream side of 1. The high pressure line L1 is provided with a parallel line L3 that connects the upstream and downstream sides of the pump P1, and one of the pressure regulating lines L3a is equipped with a pressure regulating valve RV that opens at a pressure of 65 kg/cm ² , for example. The liquid is sprayed from the high pressure nozzle 3a at a pressure of 65 kg/ ^cm2 , and the other small amount outflow line L3b is equipped with a solenoid valve.
EV3 is installed.

The wax tank 22 and scale remover tank 23 are connected to a low-pressure nozzle 3b via a diaphragm pump P2 with a flow rate of 300 c.c./min via a line L4 through solenoid valves EV5 and EV6, respectively, and liquid is supplied from the low-pressure nozzle 3b. For example, pressure 2
It is designed to be sprayed at a rate of Kg/cm ² and a flow rate of 1/min.

The upstream side of the solenoid valve EV1 of the high pressure line L1 is connected to the downstream side of the solenoid valve EV6 of the low pressure line L4 via the solenoid valves EV4 and EV7 by a mixing line L5, and the solenoid valve EV4 of the mixing line L5 is connected to the downstream side of the solenoid valve EV6 of the low pressure line L4.
The downstream side of the low pressure line L4 is connected to the downstream side of the pump P2 of the low pressure line L4 via a vane pump P3 with a flow rate of 700 c.c./min by a line L6. Further, a variable orifice RC is interposed in a small amount outflow line L7 that connects the upstream side and the downstream side of the pump P3 of the line L6.

The detergent tank 24 is connected to a thin detergent tank 21 via an electromagnetic pump P4 through a supply line L8, and the water tank 20 and the thin detergent tank 21 are kept filled with water from a water source via ball taps 25 and 26, respectively. It's becoming like that.

The pumps P1 to P4, solenoid valves
EV1 to EV7 are all connected to control device 17.

In FIG. 5, the control device 17 controls each pump P1 to P4 and each solenoid valve EV1 based on signals from a selection switch 6, a coin selector 7, a start button 9, a pause button 10, a water supply button 11, and a small amount outflow switch 16. or EV7 and each display 8, 12,
A control signal is output to 13, 14 and a voice generator 15.

FIG. 6 shows the overall control flow. That is, when the customer presses the selection switch 6, the control device 17 determines the selected course (steps SA to SD), displays the fee for that course on the fee display 8, and provides guidance using the voice device 15 ( Steps SA to SD). Next, if it is determined based on the signal from the coin selector 7 that the inserted fee is equal to the displayed fee (step S
A to SD), the selected course is set (steps SA to SD), control flows A and B for each course (details are omitted), and C and D described later are executed.

FIG. 7 shows the control flow of the water scale removal course. That is, when the customer removes the high pressure nozzle 3a and presses the start button 9 (step S30), the control device 17 opens the solenoid valve EV1 and turns on the pump P1.
Turn on and spray water at high pressure (Step S3)
1). When the spray time t7 reaches the set time T7 (for example, 2 minutes), the spray is stopped (step S32). Therefore, the customer applied the high pressure nozzle 3a,
When the low pressure nozzle 3b is removed and the start button 9 is pressed (step S33), the solenoid valves EV4 and EV6 are opened.
Turn on pumps P2 and P3 and spray a mixture of scale remover and water at a low pressure (2 kg/cm ² ) (step S34) when the spray time t8 is the set time T8.
(for example, 1 minute), the spraying is stopped (step S35). Then, the customer tried using the low pressure nozzle 3b.
After manually removing scale within the set time T9 (for example, 20 minutes), remove the high pressure nozzle 3a and press the start button 9 (step S36).
The solenoid valve EV1 is opened and the pump P1 is turned on to spray water at high pressure (step S37). When the spray time t10 reaches the set time T10 (for example, 3 minutes), stop the spray (step S38),
A termination process is performed (step S42), and the control ends.

In addition, if step S30 or S33 is NO forever, the waiting time t0 becomes the set time T0.
(3 minutes) (step S39 or S4)
0), the process moves to step S42, and then step S3
If 6 is always NO, when the working time t9 reaches the set time T9 (20 minutes) (step S4
1), the process moves to step S42 and the control ends.

FIG. 8 shows the control flow of the wax course. That is, when the customer removes the low-pressure nozzle 3b and presses the start button 9 (step S50), the control device 17 opens the solenoid valves EV4 and EV5, turns on the pumps P2 and P3, and starts dispensing the mixture of wax and water. Spray at low pressure (step S51). When the spray time t11 reaches the set time T11 (for example, 2 minutes), the spray is stopped (step S52).
Therefore, the customer applies the low-pressure nozzle 3b and manually rubs in the wax for a set time T12 (for example, 10
minutes), remove the high pressure nozzle 3a and press the start button 9 (step S53), the solenoid valve
EV1 is opened and pump P1 is turned on to spray water at high pressure (step S54). Spray time t
13 reaches the set time T13 (for example, 3 minutes), the spraying is stopped (step S55), and a termination process is performed (step S58) to end the control.

If step S50 is NO forever, when the waiting time t0 reaches the set time T0 (3 minutes) (step S56), the process moves to step S58.
If the answer in step S53 is NO, when the manual work time t12 reaches the set time (10 minutes) (step S57), the process moves to step S58 and the control ends.

In addition, the operation method,
Since information such as the remaining time is announced by the voice generator 15, there is no risk of erroneous operation or continuing work without noticing that the remaining time is running out.

FIG. 9 shows a control flow for washing the hose and nozzle as washing means. That is, after the low-pressure spraying of the water scale remover and water mixture has finished (step S35) or the low-pressure spraying of the wax and water mixture has finished (step S52), the process including storing the low-pressure nozzle 3b in the storage cylinder 4 is performed. When the elapsed time t17 reaches the set time T17 (for example, 30 seconds) (step S80), the solenoid valves EV4 and EV
7, turn on pumps P2 and P3, and turn on nozzle 3.
The hose 2b and the nozzle 3b are washed by low-pressure water injection from step S81. When the injection time t18 reaches the set time T18 (for example, 18 seconds) and water has been injected, for example, 300 c.c., the injection is stopped (step S82) and the control is ended. In this way, approximately 300 c.c. of water is sprayed in 18 seconds to wash away residual chemicals and prevent chemicals from accumulating on the low-pressure hose 2b and nozzle 3b.

[Effects of the Invention] As explained above, according to the present invention, after the chemical is sprayed from the low-pressure nozzle, a small amount of water (for example, 300 c.c.) is injected by the hose and nozzle washing flow, so that the chemical is sprayed through the hose and nozzle. In particular, it can prevent nozzle openings from being clogged with chemicals, and it can also prevent harmful effects on the vehicle body, hoses, and nozzles due to chemical changes of multiple residual chemicals. Also, since the chemical-cleaning liquid is discharged from the storage cylinder, it does not stick to the car wash machine and contaminate it.

[Brief explanation of drawings]

Fig. 1 is an external view showing an example of a spray-type car wash machine embodying the present invention, Fig. 2 is a detailed view of the storage cylinder, Fig. 3 is a cross-sectional view orthogonal to Fig. 2, Fig. 4 is a circuit diagram, and Fig. 4 is a circuit diagram. Figure 5 is a control block diagram, Figure 6 is a comprehensive control flowchart, Figure 7 is a control flowchart for the scale removal course, Figure 8 is a flowchart for the wax course, and Figure 9 is for hose and nozzle washing. FIG. EV1 to EV7...Solenoid valve, L1...High pressure line, L4...Low pressure line, P1 to P4...
Pump, RV...pressure regulating valve, 1...car wash machine body, 2
a...High pressure hose, 2b...Low pressure hose, 3a...
...High pressure nozzle, 3b...Low pressure nozzle, 4...Storage cylinder, 17...Control device, 20...Water tank, 21
...Light detergent tank, 22...Wax tank, 2
3...scale remover tank, 24...detergent tank.

Claims (1)

[Claims] 1 A washing system that has a low-pressure nozzle that sprays chemicals such as scale remover and wax, and a high-pressure nozzle that sprays high-pressure water, and sends low-pressure water to the low-pressure nozzle for a predetermined period of time to wash away residual chemicals after the chemical spray is finished. and a low-pressure nozzle storage cylinder for storing a low-pressure nozzle, the low-pressure nozzle storage cylinder communicating with a drainage means.