JPH0325059A - Spray type carwash machine - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

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

[Prior Art] Such a car wash machine is known, and the present applicant disclosed it in Japanese Unexamined Patent Publication No. 1986-
Japanese Patent No. 143987 proposes a spray nozzle equipped with a high-pressure spray nozzle and a low-pressure spray nozzle.

[Problems to be Solved by the Invention] In conventional spray-type car wash machines, immediately after the high-pressure water is sprayed and immediately after the spray stops, the spray reaction force causes an unexpected reaction to the person holding the spray nozzle. Therefore, there is a risk of taking your hand off the spray nozzle when spraying starts, and if you operate the spray nozzle without holding it due to an incorrect operation, there is a risk that the nozzle will fly around.

On the other hand, when spraying is stopped, the tip of the nozzle is brought close to the vehicle body, etc., so if spraying suddenly stops, the force of the person holding the spray nozzle may cause the nozzle to hit the vehicle body, causing damage to the vehicle body. .

An object of the present invention is to provide a spray-type car wash machine that eliminates problems caused by sudden changes in injection pressure.

[Means for Solving the Problems] According to the present invention, the injection pressure is increased in stages at the initial stage of injection,
A pressure control means is provided for controlling the injection pressure to be lowered in stages in the latter half of injection.

The above pressure/control means consists of a solenoid valve for anti-freezing installed in the small volume outflow line of the bypass line connecting the upstream and downstream sides of the pump, and opens the solenoid valve at the early and late stages of injection to It is preferable to perform two-stage control such that low pressure (for example, 20 kg/ad) injection is performed in contrast to high pressure (for example, 65 kg/cd) injection.

In addition, the pressure control means may be composed of a pump drive motor, and its rotation speed may be controlled digitally or analogously, and the injection pressure may be controlled in multiple stages, or the orifice diameter of the nozzle may be varied by a time delay to control the nozzle flow rate. Various means can be used, such as making the pressure variable, or making the amount of water absorbed by the pump variable with a time delay on the suction side of the pump, or making the pressure and flow rate of the injection from the nozzle variable with a time delay. can.

In addition, a control device is installed, and the control modes include washing course (water high-pressure spray), shampoo course (water high-pressure spray, thin detergent high-pressure spray, and water high-pressure spray), and water scale removal course (water high-pressure spray, water scale remover and water mixture) It is preferable to provide four courses: a low-pressure liquid spray and a high-pressure water spray) and a wax course (a low-pressure liquid mixture of wax and water spray, and a high-pressure water spray). In this way, the most suitable car wash can be performed depending on the degree of dirt on the car.

[Function] In the spray-type car wash machine configured as above,
The solenoid valve in the bypass circuit is opened during the early and late stages of injection. Then, a portion of the water from the pump bypasses the pump, so the discharge pressure of the pump is suppressed to a low pressure. Therefore, the injection pressure from the nozzle is lowered, and the reaction caused by the injection is reduced.

[Example] Embodiments 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 main body 1 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 addition, in the figure, 4 is a storage tube for the low pressure nozzle 3b, and 5 is a spring rod that supports the hose.

A selection switch 6 is provided on one side of the zero body 1, and the selection switch 6 selects a water washing course (water high pressure spray),
Shampoo course (high pressure water spray, thin detergent high pressure 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 (low pressure mixture of wax and water) There are four car wash courses to choose from: spray, high-pressure water spray). Also on that surface are a coin selector 7, a charge display 8, a start button 9 for instructing to start car washing and restarting after a pause, a pause button 10, a water supply button 11 for instructing water spray, a nozzle in use indicator 12,
A working indicator 13, a remaining time indicator 14, a voice 15 for informing the operation method, remaining time, etc., and a small amount outflow switch 16 for preventing freezing are provided. Inside the main body 1, a water tank 20, a thin detergent tank 21, a wax tank 22, a water scale remover tank 23, a detergent tank 24, a control device 17, pumps, solenoid valves, etc., which will be described later, are housed. There is.

In FIG. 2, the water tank 20 is connected to a high pressure line L, a solenoid valve EV, and a high pressure pump, for example, 70 kg/c.
d is connected to the high-pressure nozzle 3a via a plunger pump P1 with a performance of IOl/min.

The thin detergent tank 21 is connected to a solenoid valve E by a subline L2.
It is connected to the downstream side of the solenoid valve EV of the high pressure line L1 via V,. And, the high voltage line L1 has a pump P.
A parallel bypass line L, which connects the upstream and downstream sides of , is provided, and one of the pressure regulation lines L3M is equipped with a pressure regulation valve RV that opens at a pressure of 65 kg/cd, for example, and from the high pressure nozzle 3a The liquid is sprayed at a pressure of 65 kg/ci, and the other small amount outflow line L3b is equipped with an electromagnetic valve EV for pressure adjustment and anti-freezing.

The wax tank 22 and the water scale remover tank 23 are supplied with a flow rate of 300 cc/. ．． ．． diaphragm pump P2
The liquid is connected to the low pressure nozzle 3b via the low pressure nozzle 3b, and the liquid is supplied from the low pressure nozzle 3b at a pressure of, for example, 2 kg/al and a flow of MtLl.
/． ．． ．． It is designed to be sprayed with

The upstream side of the electromagnetic valve EV of the high pressure line L1 is connected to the downstream side of the electromagnetic valve EV6 of the low pressure line L4 via the electromagnetic valves Ev4 and E7 by a mixing line L5, and the electromagnetic valve of the mixing line L On the downstream side of the valve EV4, a vane pump P with a flow of ffi7 0 0 cc/,, is connected via a line L6.
3 to the downstream side of the pump P2 of the low pressure line L4. 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 the thin detergent tank 21 via an electromagnetic pump P4 by a supply line L8, and is connected to the water tank 2
0, the thin detergent tank 21 has pole taps 25 and 2, respectively.
6, the tank is kept full of water from a water source.

The pumps P1 to P4 and the electromagnetic valves Ev1 to EV7 are all connected to a control device 17.

In FIG. 3, the control device 17 controls each pump P1 to P4 and each solenoid valve EV 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. , to EV, each display 8, 12, 13, 14, and a voice generator 15, respectively.

FIG. 4 shows the overall control flow.

That is, when the customer presses the selection switch 6, the control device 17 determines the selected course (steps SIA to SID), displays the fee for that course on the fee display 8,
Guidance is given using the voice generator 15 (steps SnA to SIID)
). Next, based on the signal from the coin selector 7,
If it is determined that the input fee is equal to the displayed fee (steps SIIIA to SI [[D)], the selected course is set (steps SrVA to SIVD), and control flows A to D for each course are executed.

FIG. 5 shows the control flow of the washing course.

That is, when the customer removes the high pressure nozzle 3a and presses the start button 9 after completing the control flow shown in FIG.
1) Open solenoid valves EV, , EV3 and turn pump P1 to O.
N (step S2). Even though the discharge pressure of the normal cleaning line of pump P1 is high pressure (70 kg/cm),
Since a portion of the water is bypassed from the small amount outflow line L3b, it is injected at low pressure (for example, 20 kg/al), and the shock of the injection applied to the high-pressure nozzle 3a is reduced. Then, when the injection time t reaches the set time T (the time at which a person is expected to get used to the injection, for example, 3 seconds) (step S3),
Solenoid valve EV is closed (step S4). High pressure injection (6
5 kg/cffl). The car is washed using this high-pressure injection, and when the injection is about to end, that is, when the spray time t reaches the set time T (spray set time T, minus 1 second) (step S,), the solenoid valve EV) is opened and the above Similarly, the injection pressure is lowered to a low pressure (20 kg/cJ) (step S6). Then, the spray time t1 is the set time T
I (for example, 3 minutes) (step S7), close the solenoid valves EV, , Ev3, and turn off the pump P1.
(Step S8), and performs termination processing (Step S1o).
, end control. Therefore, since the injection pressure is low when injection is stopped, the shock applied to the high-pressure nozzle 3a when injection is stopped is reduced, and the end of injection is predicted when the pressure becomes low.

Note that in step S1, the waiting time t. is the set time T. (
For example, if the answer is No even after 3 minutes, that is, if the customer does not press the start button 9 within 3 minutes (step S9)
, the process moves to step SIO and the control ends.

FIG. 6 shows the control flow of the shampoo course. That is, when the customer removes the high-pressure nozzle 3a and presses the start button 9 after completing the control flow shown in FIG. S12). Then, some of the water is bypassed from the small amount outflow lines L and b, so the low pressure (2
0 kg/cnf), and the shock of the injection applied to the high-pressure nozzle 3a is reduced. Then, when the injection time t reaches the set time T (3 seconds) (step S+3)
, close the solenoid valve EV (step s.L high pressure injection (65
kg/al). Then, water washing is performed, and when the spray time t2 is about to end, that is, the spray time t2 reaches the set time T (spray set time T2 minus 1 second) (step SI5), the solenoid valve EV is opened, and the injection pressure is increased in the same manner as above. to low pressure (20 kg/ci) (Step S
, 6). Then, the spray time t2 is the set time T2
(for example, 2 minutes) (step S, 7), close the electromagnetic valves Ev1, Ev, and turn off the pump P1 (step S, 8). Therefore, since the injection pressure is low when the injection is stopped, the shock applied to the high-pressure nozzle 3a when the injection is stopped is reduced.

Next, move on to the shampoo injection process. That is, at this time, shampooing is not yet completed (step S1,), and the stop time t,
When reaches the set time T3 (for example, 15 seconds), that is, after 15 seconds (step S20), the solenoid valve Ev2
, Ev3, and turn on pump P and wo to spray a weak detergent (step S2).

Then, a part of the thin detergent is bypassed from the small amount outflow line L3b, so it is injected at low pressure (20 kg/cE!), and the shock of the injection applied to the high-pressure nozzle 3a is reduced. Then, when the injection time t reaches the set time T (3 seconds) (step S22), the solenoid valve EV is closed (step S22).
2,), high pressure injection (65 kg/al). and,
When shampoo washing is performed and the spraying is about to end, that is, the spray time t becomes the set time T (spray set time T4 minus 1
seconds) (step S24), open the solenoid valve EV, and reduce the injection pressure to a low pressure (20 kg/al) in the same manner as above.
) (step S25). and spray time t
4 reaches the set time T4 (for example, 2 minutes) (step S26), close the solenoid valves EV2 and EVI, and close the pump P.
, is OFFL, , the end of shampooing is memorized (step S
27). Then, when the stop time t reaches the set time T5 (the time required to remove unremovable dirt by hand, for example, 3 minutes) (step S28), the process returns to step 312, and washing with water up to step Fzs, that is, rinsing is performed. Thereafter, the process advances to step 819. At this time, shampooing has ended, so perform end processing (step S3).
0), control ends.

Note that in step Sl+, the waiting time t. is the set time T.

(for example, 3 minutes), if the answer is NO, that is, the customer is 3 minutes old.
If the start button 9 is not pressed within minutes (step S2
9), the process moves to step S'lO and the control ends.

FIG. 7 shows a control flow for a small amount of outflow. That is, when there is a risk of freezing during the cold season, when the small amount outflow switch 16 is pressed (step 890), the solenoid valve EV,
, EV, and EV a are opened to cause a small amount of water to flow out from the high-pressure nozzle 3a due to the head of water in the water tank 20,
A small amount of water flows out from the low pressure nozzle 3b via the variable orifice RC to prevent both hoses and nozzles from freezing (step S9).

Then, if you press switch l6 again (step S, 2),
The solenoid valves EVI, EV3, and EV4 are closed to stop the outflow (step 89m), and the control ends.

[Effects of the Invention] Since the present invention is configured as described above, the recoil when water or weak detergent is sprayed at high pressure from the nozzle is reduced, so there is no surprise or fear caused by sudden spraying.
Even women can easily operate it.

Further, when the pump is started by mistake without holding the nozzle, the risk of the nozzle flying around is prevented, and safety is improved.

Furthermore, this prevents problems such as the tip of the nozzle hitting the vehicle body due to reaction when stopped, causing damage.

The end of the injection can be predicted by the weakening of the injection.

[Brief explanation of drawings]

Fig. 1 is an external view showing an embodiment of the present invention, Fig. 2 is a circuit diagram, Fig. 3 is a control block diagram, Fig. 4 is a comprehensive control flowchart, and Fig. 5 is a flowchart of a washing course. , FIG. 6 is a flowchart of the shampoo course, and FIG. 7 is a flowchart of a small amount of outflow. EV, or EV,・●・Solenoid valve L1・●●High pressure line L3・・Bypass line L3b・・Small amount outflow line L4・・・・Low pressure line P1 or P4 ●・◆Pump RC−・・Variable orifice
RV...Pressure regulating valve ■...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 button 10...Pause button 1
1... Water supply button l6... Small amount outflow switch 1
7...Control device 20...Water tank 21...
・Light detergent tank 22...Wax tank 23...
- Scale remover tank 24... Detergent tank Figure 5 Figure 7

Claims (1)

[Claims] A spray-type car wash machine characterized by being provided with a pressure control means that increases the injection pressure in stages at the early stage of injection and gradually lowers the injection pressure at the latter stage of injection.