JPH0557940B2 - - Google Patents

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 them 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, water scale remover, etc. using such a spray type car wash machine, the present applicant filed an invention in Japanese Patent Application No. 1982-292345.

However, in such conventional technology, if the spray nozzle does not wash the line with water after injecting the chemical, the chemical in the line may become clogged or mix with other chemicals. It's being washed. Since water is accumulated in the line in this way, water is injected at the beginning of chemical injection, and the chemical will not be ejected until after a certain period of time, for example, 15 seconds. This time delay becomes longer for chemicals with a smaller 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. After that, chemicals come out, and although the customer realizes that the initial injection was water, they end up doing the unnecessary work of spraying the car with more water than necessary.

Chemicals can also build up on the inside surfaces of hoses and nozzles, clogging them. Furthermore, when chemicals are stacked in such a manner, when multiple chemicals are sprayed from one hose or nozzle, they may mix and cause chemical changes, which may have an adverse effect on the vehicle body, hoses, or nozzles.

[Problems to be Solved] Therefore, an object of the present invention is to provide a spray-type car wash machine that can spray chemicals immediately and prevent chemicals from accumulating on hoses and nozzles.

[Means for Solving the Problems] The spray-type car wash machine according to the present invention includes a low-pressure nozzle that sprays a chemical such as a scale remover or wax, a chemical liquid feeding means that feeds the chemical at low pressure to the low-pressure nozzle, and a high-pressure a high-pressure nozzle that injects water, a pump that sends water at high pressure to the high-pressure nozzle, and a washing means that sends low-pressure water to the low-pressure water nozzle for a predetermined period of time to wash away chemicals in the chemical piping and the nozzle after the chemical injection is finished. A control device is provided which drives the chemical liquid feeding means for a predetermined period of time before starting chemical injection to execute a chemical injection preparation liquid feeding process in which water in the piping of the low pressure nozzle and the nozzle is replaced with chemical.

[Description of effects] Therefore, since chemicals such as 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.

Before the main liquid feeding of the chemical, the control device uses the chemical liquid feeding means to feed an amount of chemical sufficient to replace the water in the pipes and nozzles with the chemical, so that this chemical injection preparation liquid feeding process is performed. Therefore, when the chemical is actually fed, the chemical can be immediately injected.

[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 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. . 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.

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,
Thin tip agent 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 are a coin selector 7, a charge display 8, a start switch 9 for instructing the start of a car wash and restarting after a temporary stop, and a voice 1 for informing the operation method, operation guidance, etc.
5 is provided. Inside the main body 1, there is a water tank 20, a detergent tank 21, a wax tank 22, a scale remover tank 23, a control device 17, pumps P1, P2, P3 (described later), solenoid valves EV1, EV2, EV3, EV4, EV5, EV
6th grade is included. In addition, wax tank 2
2 contains a wax stock solution in which wax is wrapped in a surfactant.

In FIG. 2, the water tank 20 is connected to the line L.
1, solenoid valve EV1 and high pressure pump e.g. 70
Plunger pump P with performance of 10/min at Kg/ ^cm2
1 to the high pressure nozzle 3a.

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 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 L3 through solenoid valves EV4 and EV5, 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 wax tank 22, scale removing tank 23, and diaphragm pump P2 constitute chemical liquid feeding means. however,
For chemicals, only one tank may be used.

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 L3 via the solenoid valve EV3 by a line L4,
The downstream side of the solenoid valve EV3 in line L4 is a vane pump P3 with a flow rate of 700 c.c./min via line L5.
The low pressure line L3 is connected to the downstream side of the pump P2 via the low pressure line L3. This line L4 and solenoid valve
EV6 constitutes the washing means.

and the pumps P1 to P3, solenoid valves;
EV1 to EV6 are all connected to and controlled by a control device 17.

In FIG. 3, a control device 17 sends control signals to each pump P1 to P3, each electromagnetic valve EV1 to EV6, a display 8, and a voice generator 15 based on signals from a selection switch 6, a coin selector 7, and a start switch 9. It is now output.

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 is designed to let you know the elapsed work time and the remaining time.

(a) Water washing When you press the start switch 9, the high pressure nozzle 3a
For example, water is sprayed for 5 minutes.

(b) Shampoo When you press start switch 9, water is
Spray for 120 seconds, then rest for 5 seconds, then shampoo for 120 seconds, then rest for 5 seconds, then spray water for 120 seconds.

(c) Water scale removal When the start switch 9 is pressed, the high pressure nozzle 3a
Spray more water, for example, for 120 seconds. Next, press the start switch 9 again, this time the low pressure nozzle 3b
The water scale remover is sprayed from the machine for, for example, 120 seconds, and then the scale is removed manually for about 10 minutes, and the start switch 9 is pressed to spray water from the high-pressure nozzle 3a for, for example, 120 seconds.

(d) Wax When the start switch 9 is pressed, water is sprayed from the high-pressure nozzle for, for example, 120 seconds.When the start switch 9 is pressed again, wax is sprayed from the low-pressure nozzle for, for example, 120 seconds. The wax is rubbed in for about 10 minutes, and then the start switch is pressed again to spray water from the high-pressure nozzle for, for example, 120 seconds.

In each of the above-mentioned work courses, in the case of the scale removal course (c) and wax course (d) that use low-pressure nozzles, if 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 it, insert a coin into the coin selector, and then press the start switch 9 (step S1). Then, the worker grasps the high-pressure nozzle 3a and goes to the car, so it is determined 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 is activated. The pump P1 is opened and the pump P1 is driven (step S3). Then, high-pressure water is injected from the high-pressure nozzle 3a, and when the washing operation is performed for a certain period of time T2, for example, 110 seconds (step S4), the control device 17 prepares for the next work course, which is to spray water scale remover or wax. Execute the liquid feeding process. In other words, in the case of a wax course, pumps P2 and P3 operate, and the solenoid valve
EV3, EV4 (EV5 during the water scale removal course)
is opened (step S5), the wax stock solution in the wax tank 22 and the water in the water tank 20 are mixed,
A mixture of wax and water is sent to the low pressure nozzle 3b. Therefore, the line L leading to the low pressure nozzle 3b
3. L6 is filled with the mixed liquid and the water remaining in the line is purged. This work is calculated in advance, and in the case of chemicals, since the amount is relatively small, it is, for example, 15 seconds from step S5. When the time T3, for example, 120 seconds has elapsed since step S3 (step S6), the pump P1 is stopped and the solenoid valve EV1 is closed (step S7), so that the water injection ends. The worker then stores the high pressure nozzle 3a. After a while, from step S5 to time T4
has passed (step S8), pumps P2, P
3 stops, solenoid valve EV3, EV4 (or EV5)
is closed (step S9). Next, high pressure nozzle 3b
During this time, the line of the low pressure nozzle 3b has been replaced with a chemical.

Then, as shown in FIG. 5, when the worker presses the start switch 9 again (step S10), a certain period of time T5, for example, 5 seconds has elapsed (step S1
1) After that, pumps P2 and P3 are driven and the solenoid valve
EV3, EV4 (or EV5) open (step S
12). This time T5 (step S11) is the time required for the worker to bring the low pressure nozzle 3b to the automobile. By the operation of pumps P2 and P3, the chemical, ie, a mixture of wax and water, is injected from the low-pressure nozzle 3b.
Since the mixed liquid is sent to the low pressure nozzle 3b by S5, the worker can immediately apply wax. and a certain time T6, for example 110
When seconds have elapsed (step S13), solenoid valve EV6 opens and solenoid valve EV4 (or EV5) closes (step S14). Therefore, only water is sent from step S14. Then, when a certain period of time T7, for example, 120 seconds has elapsed from step S12 (step S15), pumps P2 and P3 stop.
Solenoid valve EV3 closes (step S16). Therefore, the chemical injection (waxing) ends.

Therefore, the worker stores the low-pressure nozzle 3b and washes the car by hand by rubbing the car body with a rag, etc.
In order to wash the low-pressure nozzle system lines and pumps during that time, the control device 17 determines whether a certain period of time T8, for example, 20 seconds, has elapsed since step S16 (step S17), and after time T8 has elapsed, the control device 17 cleans the low-pressure nozzle system line and pump with water. And to wash the pumps, start pumps P2 and P3, and solenoid valves EV3 and
Open EV6 (step S18). Then, water flows into the low pressure lines L3, L5, L6 and P2, P3, so 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 S19), and after the elapse of time T9, pumps P2 and P3 are stopped, and solenoid valves EV3 and EV6 are
is closed (step S20), and the work is completed.

Now, after completing the manual car wash, the worker presses the start switch 9 as shown in FIG. 6 in order to wash away the remaining chemicals (step S21). Then, I go back to the car with the high-pressure nozzle 3a. Therefore, after a certain period of time T10, for example 5 seconds (step S22), the pump P1
is driven, and the solenoid valve EV1 opens (step S2).
3). High-pressure water is then sprayed from a high-pressure nozzle to wash away any remaining chemicals. This operation is continued for a certain period of time T11, for example, 120 seconds (step S24), and after the elapse of that time T11, the pump P
1 and close the solenoid valve EV1 (step S2).
5) Finish the work. The worker uses high pressure nozzle 3a
to store.

Figure 7 shows pumps P1 and P in the above work.
FIG. 2 is a diagram illustrating how the electromagnetic valves EV1, EV3, EV4 (or EV5), and EV6 operate.

First, the start switch 9 is pressed at time t1.
Then, the voice generator 15 issues an instruction to ``pick up the high-pressure nozzle.'' and time t2
When the time comes (from t1 to after T1), the pump P1 and the solenoid valve EV1 are turned on, and water is injected from the high-pressure nozzle. This work is performed at time t4 (from t1 to T3
Pump P1 and solenoid valve EV1 are
is turned off, but shortly before that, at time t3 (after t1 to T2), pumps P2 and P3 and solenoid valve EV
3. EV4 (or EV5) turns on and removes water from the line leading to the low pressure nozzle. This elimination work is performed until time t5 (after t3 to T4). The operation from time t1 to time t5 is as shown in FIG. When water injection from the high-pressure nozzle is finished, when the start switch 9 is pressed at time t6, an instruction to ``pick up the low-pressure nozzle'' is issued from the voice generator. Then, at time t7 (after T5 from t6), pumps P2 and P3 and solenoid valves EV3 and EV4 (EV
5) is turned on and chemicals are injected from the low pressure nozzle. This chemical injection work is performed at time t9 (t
7 to after T7), and a little earlier at time t
8 (after t7 to t6), solenoid valve EV4 (or EV
5) is turned off, solenoid valve EV6 is turned on,
Although only water is sent between times t8 and t9, during that time the chemical in the low pressure line is injected from the low pressure nozzle. Then, at time t9, the solenoid valve EV
3. EV6 and pumps P1 and P2 are turned off.

Next, at time t10, an instruction to "please do manual work" is issued from the voice box, and manual work is performed until time t13, during which time t11 (from t9 to T
8) Pumps P2, P3 and solenoid valve EV3,
EV6 turns on and the low pressure line and pump P2,
P3 washing with water is performed. The water washing work ends at time t12 (after T9 from t11), and the pump P
2, P3, solenoid valves EV3 and EV6 are turned off. The operation from time t1 to time t12 is as shown in FIG.

When the start switch is pressed at time t13 when manual work is finished, a voice prompt says, ``Please take the high pressure nozzle.''
An instruction is issued, and the time t14 (from t13 to T
10), pump P1 and solenoid valve EV1 are turned on, water is injected by the high-pressure nozzle, and at time t
15 (after t14 to T11), the pump P1 and the solenoid valve EV1 are turned off, and the work is completed. The operation from time t13 to time t15 is as shown in FIG.

[Effects of the Invention] As described above, the present invention provides the following excellent effects.

(i) Chemicals such as scale removers and waxes do not accumulate on nozzles and hoses, and in particular, nozzle openings are not clogged.

(ii) Water is replaced with chemical before chemical injection, so the chemical is immediately injected, saving time and creating a good image for customers.

(iii) When using multiple chemicals, chemical reactions will not damage the car body, nozzles, or hoses.

(iv) Low-pressure and high-pressure nozzles enable efficient car washing.

[Brief explanation of drawings]

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. 4 is a flowchart showing the initial water injection flow. FIG. 5 is a flowchart showing the flow of chemical injection, FIG. 6 is a flowchart showing the flow of the final water injection, and FIG. 7 is a diagram showing the operation of the pump and solenoid valve. EV1 or EV6...Solenoid valve, L1 or L6
... Line, P1 to 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... Price display, 9... Start switch, 15... Voice generator, 17... Control device, 20...
...water tank, 21 ... thin detergent tank, 22 ... wax tank, 23 ... water scale remover tank.

Claims (1)

[Claims] 1. A low-pressure nozzle that injects a chemical such as a water scale remover or wax, a chemical liquid feeding means that sends the chemical at low pressure to the low-pressure nozzle, a high-pressure nozzle that injects high-pressure water, and a high-pressure nozzle that injects high-pressure water to the high-pressure nozzle. A pump for feeding water, a flushing means for feeding low pressure water to the low pressure water nozzle for a predetermined period of time to wash away chemicals in the chemical piping and nozzle after the chemical injection is finished, and driving the chemical liquid feeding means for a predetermined period of time before starting the chemical injection. A spray-type car wash machine, characterized in that it is equipped with a control device that executes a chemical injection preparation liquid feeding process that replaces the water in the piping of the low-pressure nozzle and the nozzle with chemical.